/* SEO / A11y — 视觉上隐藏但保留给屏幕阅读器与搜索引擎 */
.visually-hidden {
    position: absolute !important;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:root {
    --orange-main: #e95d21;
    --orange-deep: #D4571A;
    --orange-light: #FF8F4C;
    --orange-glow: #FFAB73;
    --orange-pale: #FFF3EB;

    --green-main: #008C8C;
    --green-deep: #006F6F;
    --green-light: #20B2AA;
    --green-dark: #004D4D;
    --green-pale: #E0F2F2;

    --bg-warm-black: #1A1A18;
    --bg-charcoal: #2C2C28;
    --text-warm-grey: #8A8580;
    --text-sand: #C8BFB3;
    --bg-cream: #F7F4F0;
    --text-warm-white: #FFFCF8;

    --surface-dark: #1E1E1B;
    --surface-card: #252522;
    --border-dark: #3A3A35;

    --grad-main: linear-gradient(135deg, #e95d21, #D4571A, #008C8C);
    --grad-warm: linear-gradient(135deg, #e95d21, #FF8F4C);
    --grad-cool: linear-gradient(135deg, #008C8C, #20B2AA);
    --grad-cross: linear-gradient(90deg, #e95d21, #008C8C);
    --grad-orange-green: linear-gradient(to right, #e95d21, #008C8C);

    --font-en-display: 'Syne', sans-serif;
    --font-en-serif: 'DM Serif Display', serif;
    --font-cn-display: 'Noto Serif SC', serif;
    --font-cn-body: 'Noto Sans SC', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* z-index scale */
    --z-hero-content: 3;
    --z-back-to-top: 999;
    --z-navbar: 1000;
    --z-hamburger: 1001;
    --z-mobile-menu: 1000;
    --z-cursor: 9999;
    --z-scroll-progress: 10001;
    --z-wechat-modal: 10000;
    --z-cmd-palette: 20000;
    --z-ar-cursor: 100;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-warm-black);
    color: var(--text-warm-white);
    font-family: var(--font-cn-body);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 全局微噪点：极低透明度胶片颗粒，让大面积暗底不显得"平"。
   inline SVG 无额外请求；不喜欢删掉这条即可。 */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: var(--z-scroll-progress);
    pointer-events: none;
    opacity: 0.05;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size: 160px 160px;
}

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-warm-black); }
::-webkit-scrollbar-thumb { background: var(--orange-main); border-radius: 2.5px; }

a { text-decoration: none; color: inherit; }

/* Cursor glow — 已移除（交互减法），保留空类以防旧引用 */
.cursor-glow { display: none; }

/* Scroll progress bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: var(--grad-orange-green);
    z-index: var(--z-scroll-progress);
    width: 0%;
    transition: none;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 72px;
    background: rgba(26, 26, 24, 0.6);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    z-index: var(--z-navbar);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 48px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.logo-icon svg { width: 36px; height: 36px; }

.logo-text {
    font-family: var(--font-en-display);
    font-weight: 700;
    font-size: 16px;
    letter-spacing: -0.3px;
}

.nav-links { display: flex; gap: 28px; align-items: center; }

.nav-social { display: flex; gap: 16px; align-items: center; margin-left: 20px; padding-left: 20px; border-left: 1px solid var(--border-dark); }
.nav-social a { display: flex; align-items: center; }
.nav-social svg { width: 18px; height: 18px; fill: var(--text-warm-grey); transition: fill 0.3s; }
.nav-social a:hover svg { fill: var(--text-warm-white); }

.nav-link {
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-warm-grey);
    transition: color 0.3s;
}

.nav-link:hover { color: var(--text-warm-white); }

/* ========== SCREEN 1: HERO ========== */
#hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    /* 无视频后与全站同底色，首屏与下一节无缝 */
    background-color: var(--bg-warm-black);
}

/* Hero 背景视频已移除（2026-07-04）：纯暖黑 + 品牌光晕，大字是唯一主角 */

/* Helmet visor vignette overlay */
.hero-visor {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background:
        /* 头盔上下边缘重暗角 */
        linear-gradient(to bottom,
            rgba(0,0,0,0.7) 0%,
            transparent 18%,
            transparent 82%,
            rgba(0,0,0,0.7) 100%
        ),
        /* 左右边缘弧形暗角 — 模拟头盔开口 */
        radial-gradient(
            ellipse 90% 75% at 50% 50%,
            transparent 55%,
            rgba(0,0,0,0.5) 75%,
            rgba(0,0,0,0.85) 100%
        );
}


/* Jarvis HUD Canvas — must be above video + overlay */
/* 降噪：HUD 装饰整体退后，大字标题是首屏唯一主角 */
.hero-canvas {
    position: absolute;
    inset: 0;
    z-index: 2;
    opacity: 0.45;
}

/* Ambient glow behind HUD */
.hero-glow-1 {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70vmin;
    height: 70vmin;
    background: radial-gradient(circle, rgba(233,93,33,0.12), rgba(0,140,140,0.06) 50%, transparent 70%);
    filter: blur(60px);
    z-index: 0;
    animation: glowPulse1 6s ease-in-out infinite;
}

@keyframes glowPulse1 {
    0%, 100% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.6; transform: translate(-50%, -50%) scale(1.08); }
}

/* Dark overlay — vignette + 品牌色 tint，把偏蓝紫的视频压进橙绿暖调 */
.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background:
        /* 底部渐入页面暖黑，让首屏与下一节无缝衔接 */
        linear-gradient(to bottom,
            transparent 55%,
            rgba(26, 26, 24, 0.55) 85%,
            rgba(26, 26, 24, 0.92) 100%
        ),
        /* 品牌色温：左上橙、右下绿，低透明度 */
        linear-gradient(135deg,
            rgba(233, 93, 33, 0.12) 0%,
            rgba(26, 26, 24, 0) 45%,
            rgba(0, 140, 140, 0.14) 100%
        ),
        radial-gradient(
            ellipse 80% 70% at 50% 50%,
            transparent 0%,
            rgba(10, 10, 10, 0.15) 40%,
            rgba(10, 10, 10, 0.6) 100%
        );
}

.hero-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-identity {
    margin-bottom: 18px;
    color: var(--text-warm-grey);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-decoration: none;
    text-transform: uppercase;
    opacity: 0;
    animation: fadeInUp 1s ease-out 0.05s forwards;
}

.hero-identity:hover { color: var(--green-light); }

.hero-title {
    font-family: var(--font-en-display);
    font-weight: 800;
    font-size: clamp(80px, 12vw, 180px);
    line-height: 0.88;
    letter-spacing: -0.05em;
    perspective: 600px;
}

.text-orange { color: var(--orange-main); }
.text-green { color: var(--green-main); }

.hero-subtitle {
    margin-top: 20px;
    font-family: var(--font-cn-display);
    font-size: 22px;
    font-weight: 400;
    color: var(--text-sand);
    letter-spacing: 0.1em;
    animation: fadeInUp 1s ease-out 0.25s forwards;
    opacity: 0;
}

.hero-subtitle-en {
    margin-top: 40px;
    font-family: var(--font-en-display);
    font-size: 13px;
    font-weight: 400;
    color: var(--text-warm-grey);
    letter-spacing: 0.25em;
    text-transform: uppercase;
    opacity: 0;
    animation: fadeInUp 1s ease-out 0.15s forwards;
}

.hero-bar {
    width: 200px;
    height: 4px;
    background: linear-gradient(to right, var(--orange-main), var(--orange-deep), var(--green-light), var(--green-main));
    border-radius: 100px;
    margin-top: 56px;
    /* 「桥」的隐喻：橙绿渐变线从左向右架起来（一次性入场） */
    animation: heroBarDraw 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.35s forwards;
    transform-origin: left center;
    transform: scaleX(0);
    opacity: 0;
}

@keyframes heroBarDraw {
    from { opacity: 0; transform: scaleX(0); }
    60%  { opacity: 1; }
    to   { opacity: 1; transform: scaleX(1); }
}

.hero-actions {
    display: flex;
    gap: 14px;
    margin-top: 28px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.45s forwards;
    opacity: 0;
}

.hero-action {
    min-width: 148px;
    min-height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 0 18px;
    color: var(--text-warm-white);
    text-decoration: none;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.06em;
    transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
    backdrop-filter: blur(12px);
}

.hero-action:hover {
    transform: translateY(-2px);
}

.hero-action-primary {
    background: rgba(233, 93, 33, 0.82);
    border: 1px solid rgba(255, 143, 76, 0.5);
    box-shadow: 0 12px 32px rgba(233, 93, 33, 0.22);
}

/* 次按钮降级为幽灵样式：主 CTA 唯一实心 */
.hero-action-secondary {
    background: transparent;
    border: 1px solid rgba(255, 252, 248, 0.14);
    color: var(--text-sand);
    backdrop-filter: none;
}

.hero-action-secondary:hover {
    border-color: rgba(255, 252, 248, 0.4);
    color: var(--text-warm-white);
}

.scroll-hint {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    animation: fadeInUp 1s ease-out 0.5s forwards, floatUp 3s ease-in-out 1.5s infinite;
    opacity: 0;
}

.scroll-hint span {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--text-warm-grey);
    text-transform: uppercase;
}

.scroll-arrow {
    width: 1px;
    height: 32px;
    background: linear-gradient(to bottom, var(--text-warm-grey), transparent);
}

/* ========== SCREEN 2: ABOUT ========== */
.section-about {
    padding: 144px 48px;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    position: relative;
}

.section-label {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--orange-main);
    text-transform: uppercase;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 56px;
}

.portrait-wrapper {
    margin-bottom: 48px;
}

/* 人像 + 自我介绍组成一行：人像不再是悬空的小圆点 */
.about-intro-row {
    display: flex;
    align-items: center;
    gap: 56px;
    text-align: left;
    margin-bottom: 64px;
}

.about-intro-row .portrait-wrapper {
    margin-bottom: 0;
    flex-shrink: 0;
}

.about-intro-row .portrait-ring {
    width: 176px;
    height: 176px;
}

.about-intro-row .about-text {
    font-size: 26px;
}

.about-company-link {
    width: min(100%, 430px);
    margin-top: 28px;
    padding: 14px 0 13px;
    display: grid;
    grid-template-columns: auto 1fr auto 20px;
    align-items: center;
    gap: 14px;
    color: var(--text-white);
    border-top: 1px solid var(--border-dark);
    border-bottom: 1px solid var(--border-dark);
    transition: color 0.25s, border-color 0.25s;
}

.about-company-label,
.about-company-domain {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.about-company-label {
    color: var(--orange-main);
}

.about-company-link strong {
    font-family: var(--font-display);
    font-size: 18px;
    letter-spacing: 0;
}

.about-company-domain {
    color: var(--text-warm-grey);
    text-transform: lowercase;
}

.about-company-link svg {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: transform 0.25s;
}

.about-company-link:hover {
    color: var(--green-light);
    border-color: rgba(0, 140, 140, 0.65);
}

.about-company-link:hover svg {
    transform: translate(2px, -2px);
}

.business-pillars {
    width: min(1120px, 100%);
    margin: 56px auto 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid var(--border-dark);
    border-left: 1px solid var(--border-dark);
}

.business-pillars article {
    min-height: 220px;
    padding: 30px 28px;
    border-right: 1px solid var(--border-dark);
    border-bottom: 1px solid var(--border-dark);
}

.business-pillars span {
    color: var(--orange-main);
    font-family: var(--font-mono);
    font-size: 10px;
}

.business-pillars h3 {
    margin: 30px 0 14px;
    font-size: 24px;
}

.business-pillars h3 a {
    color: inherit;
    text-decoration: none;
}

.business-pillars h3 a:hover {
    color: var(--accent-green);
}

.business-pillars p {
    margin: 0;
    color: var(--text-warm-grey);
    font-size: 13px;
    line-height: 1.9;
}

.business-pillars article:nth-child(2) span { color: var(--green-light); }
.business-pillars article:nth-child(3) span { color: #f2c14e; }

@media (max-width: 768px) {
    .business-pillars {
        margin-top: 38px;
        grid-template-columns: 1fr;
    }

    .business-pillars article {
        min-height: 0;
        padding: 25px 22px;
    }

    .business-pillars h3 {
        margin-top: 18px;
        font-size: 21px;
    }
    .about-intro-row {
        flex-direction: column;
        gap: 28px;
        text-align: center;
        margin-bottom: 48px;
    }

    .about-company-link {
        margin: 28px auto 0;
    }
}

/* Profile film: a distinct chapter after the three business pillars. */
.about-profile-film {
    width: min(1120px, 100%);
    margin: 104px auto 72px;
    padding-top: 38px;
    display: grid;
    grid-template-columns: minmax(220px, 0.38fr) minmax(0, 0.9fr);
    gap: clamp(42px, 6vw, 78px);
    align-items: start;
    border-top: 1px solid var(--border-dark);
}

.about-profile-film-copy {
    padding-top: 8px;
}

.about-profile-film-copy > span {
    color: var(--orange-main);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 1.2px;
}

.about-profile-film-copy h3 {
    max-width: 260px;
    margin: 22px 0 16px;
    color: var(--text-warm-white);
    font-family: var(--font-cn-body);
    font-size: clamp(25px, 2.6vw, 34px);
    line-height: 1.3;
    letter-spacing: 0;
}

.about-profile-film-copy p {
    max-width: 310px;
    margin: 0;
    color: var(--text-warm-grey);
    font-family: var(--font-cn-body);
    font-size: 13px;
    line-height: 1.9;
}

.intro-video-wrapper {
    position: relative;
    width: 100%;
    max-width: 760px;
    margin: 0 0 0 auto;
    overflow: hidden;
    border: 1px solid var(--border-dark);
    border-radius: 8px;
    box-shadow: 0 20px 64px rgba(0, 0, 0, 0.34);
    transition: border-color 0.35s ease, box-shadow 0.35s ease, transform 0.35s ease;
}

.intro-video-wrapper:hover {
    border-color: var(--orange-main);
    box-shadow: 0 24px 74px rgba(0, 0, 0, 0.4), 0 0 42px rgba(233, 93, 33, 0.08);
    transform: translateY(-3px);
}

.intro-video-wrapper video {
    width: 100%;
    display: block;
    aspect-ratio: 16/9;
    object-fit: cover;
    background: #000;
}

@media (max-width: 768px) {
    .about-profile-film {
        margin-top: 66px;
        margin-bottom: 52px;
        padding-top: 28px;
        grid-template-columns: 1fr;
        gap: 26px;
        text-align: left;
    }

    .about-profile-film-copy {
        padding-top: 0;
    }

    .about-profile-film-copy h3,
    .about-profile-film-copy p {
        max-width: none;
    }

    .about-profile-film-copy h3 {
        margin-top: 16px;
        font-size: 26px;
    }

    .intro-video-wrapper {
        max-width: none;
        border-radius: 8px;
    }
}

/* Stats bar */
.stats-bar {
    display: flex;
    justify-content: center;
    gap: 64px;
    margin-bottom: 56px;
    padding: 32px 0;
    border-top: 1px solid var(--border-dark);
    border-bottom: 1px solid var(--border-dark);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-mono);
    font-size: 32px;
    font-weight: 700;
    color: var(--text-warm-white);
    letter-spacing: -1px;
    /* 计数动画时等宽数字不抖动 */
    font-variant-numeric: tabular-nums;
}

.stat-number .stat-accent {
    background: var(--grad-orange-green);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-warm-grey);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-top: 8px;
}

.portrait-ring {
    position: relative;
    display: inline-block;
    width: 146px;
    height: 146px;
    border-radius: 50%;
    padding: 3px;
    background: var(--grad-orange-green);
    box-shadow: 0 0 40px rgba(233,93,33,0.15), 0 0 80px rgba(0,140,140,0.1);
    transition: box-shadow 0.5s, transform 0.5s;
    overflow: hidden;
}

.portrait-ring::before {
    content: '';
    position: absolute;
    inset: -50%;
    background: conic-gradient(#e95d21, #008C8C, #e95d21);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.5s;
    animation: ringRotate 3s linear infinite paused;
}

.portrait-ring:hover {
    box-shadow: 0 0 60px rgba(233,93,33,0.35), 0 0 120px rgba(0,140,140,0.2);
    transform: scale(1.05);
}

.portrait-ring:hover::before {
    opacity: 1;
    animation-play-state: running;
}

@keyframes ringRotate {
    100% { transform: rotate(360deg); }
}

.portrait {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    object-position: center 20%;
    display: block;
    background: var(--bg-warm-black);
}

.about-text {
    font-family: var(--font-cn-display);
    font-size: 30px;
    font-weight: 400;
    line-height: 1.9;
    color: var(--text-sand);
    letter-spacing: 0.02em;
}

.about-text .highlight {
    color: var(--text-warm-white);
    font-weight: 700;
}

.about-text .highlight-orange {
    color: var(--orange-main);
    font-weight: 700;
}

.about-text .highlight-green {
    color: var(--green-main);
    font-weight: 700;
}

.belief-statement {
    margin-top: 40px;
    text-align: center;
}

.belief-cn {
    display: block;
    font-family: var(--font-cn-display);
    font-size: 20px;
    color: var(--text-sand);
    font-weight: 400;
    letter-spacing: 0.05em;
}

.belief-en {
    display: block;
    font-family: var(--font-en-serif);
    font-style: italic;
    font-size: 16px;
    color: var(--text-warm-grey);
    margin-top: 8px;
}

/* Language toggle */
.lang-toggle {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-warm-grey);
    cursor: pointer;
    letter-spacing: 1px;
    transition: color 0.3s;
    background: none;
    border: 1px solid var(--border-dark);
    padding: 6px 14px;
    border-radius: 100px;
}

.lang-toggle:hover {
    color: var(--text-warm-white);
    border-color: var(--orange-main);
}

/* Capability Stack */
.section-about-profile {
    padding-bottom: 28px;
}

.section-about-profile .about-profile-film {
    margin-bottom: 24px;
}

.section-capabilities {
    max-width: 1240px;
    margin: 0 auto;
    padding: 124px 48px 116px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.section-about-proof {
    max-width: 900px;
    margin: 0 auto;
    padding: 72px 48px 116px;
    text-align: center;
}

.section-about-proof .stats-bar {
    margin-bottom: 48px;
}

.section-about-proof .belief-statement {
    margin-top: 0;
}

.section-about-proof .cta-button {
    margin-top: 40px;
}

.capabilities-heading {
    margin-bottom: 58px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(300px, 430px);
    gap: 56px;
    align-items: end;
}

.capabilities-heading .section-label {
    margin-bottom: 18px;
}

.capabilities-heading h2 {
    max-width: 620px;
    margin: 0;
    color: var(--text-warm-white);
    font-family: var(--font-cn-body);
    font-size: 42px;
    line-height: 1.18;
    letter-spacing: 0;
}

.capabilities-heading > p {
    margin: 0 0 4px;
    color: var(--text-warm-grey);
    font-family: var(--font-cn-body);
    font-size: 14px;
    line-height: 1.9;
}

.capabilities-list {
    border-top: 1px solid var(--border-dark);
}

.capability-row {
    min-height: 118px;
    padding: 28px 0;
    display: grid;
    grid-template-columns: 44px 250px minmax(0, 1fr) 176px;
    gap: 24px;
    align-items: center;
    border-bottom: 1px solid var(--border-dark);
    transition: background 0.28s ease, border-color 0.28s ease;
}

.capability-row:hover {
    border-bottom-color: rgba(233, 93, 33, 0.28);
    background: rgba(255, 255, 255, 0.012);
}

.capability-index {
    color: var(--orange-main);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 1px;
}

.capability-row:nth-child(2) .capability-index,
.capability-row:nth-child(4) .capability-index {
    color: var(--green-light);
}

.capability-row h3 {
    margin: 0;
    color: var(--text-warm-white);
    font-family: var(--font-en-display);
    font-size: 17px;
    line-height: 1.35;
    letter-spacing: 0;
}

.capability-row h3 small {
    margin-top: 4px;
    display: block;
    color: var(--text-warm-grey);
    font-family: var(--font-cn-body);
    font-size: 10px;
    font-weight: 400;
}

.capability-row > p {
    margin: 0;
    color: var(--text-sand);
    font-family: var(--font-cn-body);
    font-size: 13px;
    line-height: 1.8;
}

.capability-tools {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.capability-tool {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    flex: 0 0 36px;
    border: 1px solid rgba(255, 255, 255, 0.11);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.025);
    opacity: 0.62;
    transition: opacity 0.22s ease, border-color 0.22s ease, background 0.22s ease, transform 0.22s ease;
}

.capability-tool img {
    width: 17px;
    height: 17px;
    display: block;
    object-fit: contain;
}

.capability-tool-mark {
    color: var(--text-warm-white);
    font-family: var(--font-mono);
    font-size: 8px;
    font-weight: 700;
    letter-spacing: 0;
}

.capability-row:hover .capability-tool {
    opacity: 1;
}

.capability-tool:hover {
    border-color: rgba(0, 170, 160, 0.55);
    background: rgba(0, 140, 140, 0.09);
    transform: translateY(-2px);
}

@media (max-width: 900px) {
    .section-capabilities {
        padding: 96px 32px 88px;
    }

    .capabilities-heading {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .capabilities-heading > p {
        max-width: 680px;
    }

    .capability-row {
        grid-template-columns: 38px minmax(0, 1fr) auto;
        gap: 12px 18px;
    }

    .capability-row h3 {
        grid-column: 2;
    }

    .capability-row > p {
        grid-column: 2 / -1;
    }

    .capability-tools {
        grid-column: 3;
        grid-row: 1;
    }
}

@media (max-width: 600px) {
    .section-about-profile {
        padding-bottom: 16px;
    }

    .section-about-profile .about-profile-film {
        margin-bottom: 10px;
    }

    .section-capabilities {
        padding: 78px 20px 72px;
    }

    .capabilities-heading {
        margin-bottom: 40px;
    }

    .capabilities-heading h2 {
        font-size: 30px;
    }

    .capabilities-heading > p {
        font-size: 13px;
    }

    .capability-row {
        min-height: 0;
        padding: 24px 0;
        grid-template-columns: 28px minmax(0, 1fr);
        gap: 12px 14px;
        align-items: start;
    }

    .capability-row h3,
    .capability-row > p,
    .capability-tools {
        grid-column: 2;
    }

    .capability-row > p {
        font-size: 12px;
    }

    .capability-tools {
        grid-row: auto;
        justify-content: flex-start;
        margin-top: 3px;
    }

    .capability-tool {
        width: 34px;
        height: 34px;
        flex-basis: 34px;
    }

    .section-about-proof {
        padding: 48px 20px 84px;
    }

    .section-about-proof .stats-bar {
        margin-bottom: 38px;
    }
}

/* Highlights Gallery */
.section-highlights {
    padding: 96px 48px 0;
    max-width: 1240px;
    margin: 0 auto;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    /* 行高由 3/2 单元自然决定 + dense 回填，消除杂志格空洞 */
    grid-auto-flow: dense;
    gap: 12px;
}

.highlight-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 3/2;
    cursor: pointer;
    /* 懒加载占位色，避免图片未到时露白洞 */
    background: var(--surface-card);
}

/* Magazine-style: first two items span 2 columns for visual hierarchy.
   跨栏项必须显式给宽高比，否则会被图片原始高度撑爆整行 */
.highlight-item:nth-child(1) {
    grid-column: span 2;
    grid-row: span 2;
    aspect-ratio: 3/2;
}

.highlight-item:nth-child(2) {
    grid-column: span 2;
    aspect-ratio: 3/1;
}

.highlight-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94), filter 0.4s;
    filter: brightness(0.85);
}

.highlight-item:hover img {
    transform: scale(1.06);
    filter: brightness(1);
}

.highlight-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 32px 16px 14px;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    font-family: var(--font-mono);
    font-size: 11px;
    color: rgba(255,255,255,0.8);
    letter-spacing: 0.5px;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.3s, transform 0.3s;
}

.highlight-item:hover .highlight-caption {
    opacity: 1;
    transform: translateY(0);
}

/* As Seen In */
.seen-in {
    max-width: 1240px;
    margin: 0 auto;
    padding: 112px 48px;
}

.seen-in-heading {
    margin-bottom: 38px;
}

.seen-in-heading > span {
    display: block;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--orange-main);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 14px;
}

.seen-in-heading h2 {
    margin: 0;
    font-family: var(--font-cn-body);
    font-size: 34px;
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: 0;
    color: var(--text-warm-white);
}

.seen-in-list {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 8px;
}

.seen-in-item {
    position: relative;
    min-width: 0;
    min-height: 112px;
    padding: 15px 13px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 10px;
    border: 1px solid var(--border-dark);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.018);
    color: var(--text-sand);
    transition: transform 0.28s ease, border-color 0.28s ease, background 0.28s ease, color 0.28s ease;
}

.seen-in-item-kind {
    font-family: var(--font-mono);
    font-size: 8px;
    line-height: 1.4;
    letter-spacing: 1.2px;
    color: var(--text-warm-grey);
    text-transform: uppercase;
}

.seen-in-item strong {
    font-family: var(--font-cn-body);
    font-size: 12px;
    font-weight: 600;
    line-height: 1.45;
    letter-spacing: 0;
    white-space: nowrap;
}

.seen-in-item svg {
    position: absolute;
    top: 14px;
    right: 12px;
    width: 15px;
    height: 15px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.7;
    stroke-linecap: round;
    stroke-linejoin: round;
    color: var(--orange-main);
    transition: transform 0.28s ease, color 0.28s ease;
}

.seen-in-item-link:hover,
.seen-in-item-link:focus-visible {
    color: var(--text-warm-white);
    border-color: rgba(233, 93, 33, 0.58);
    background: rgba(233, 93, 33, 0.055);
    transform: translateY(-3px);
    outline: none;
}

.seen-in-item-link:hover svg,
.seen-in-item-link:focus-visible svg {
    color: var(--green-light);
    transform: translate(2px, -2px);
}

.seen-in-item-static {
    opacity: 0.58;
}

/* Journey timeline */
.section-journey {
    padding: 144px 48px;
    max-width: 800px;
    margin: 0 auto;
}

.timeline {
    margin-top: 80px;
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--orange-main), var(--green-main));
    border-radius: 1px;
}

.timeline-item {
    position: relative;
    padding-bottom: 48px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -44px;
    top: 4px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--orange-main);
    box-shadow: 0 0 8px rgba(233,93,33,0.25);
}

.timeline-now .timeline-dot {
    background: var(--green-main);
    box-shadow: 0 0 8px rgba(0,140,140,0.25);
    animation: nowPulse 2s ease-in-out infinite;
}

.timeline-now .timeline-era {
    color: var(--green-main);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 2px;
}

.timeline-now .timeline-title {
    color: var(--text-warm-white);
}

.timeline-now .timeline-desc {
    color: var(--text-sand);
}

@keyframes nowPulse {
    0%, 100% { box-shadow: 0 0 8px rgba(0,140,140,0.3); }
    50% { box-shadow: 0 0 14px rgba(0,140,140,0.55), 0 0 24px rgba(0,140,140,0.15); }
}

.timeline-era {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--orange-main);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.timeline-title {
    font-family: var(--font-en-display);
    font-weight: 700;
    font-size: 22px;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}

.timeline-desc {
    font-family: var(--font-cn-body);
    font-size: 15px;
    color: var(--text-warm-grey);
    line-height: 1.7;
}

/* Latest */
.section-latest {
    padding: 144px 48px;
    max-width: 1240px;
    margin: 0 auto;
}

.latest-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 64px;
}

.latest-grid-2x2 {
    grid-template-columns: repeat(2, 1fr);
}

.latest-card-video .latest-video-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: #000;
}

.latest-cover-wrap {
    position: relative;
    cursor: pointer;
    background: var(--surface-card);
}

.latest-cover-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.latest-card:hover .latest-cover-wrap img {
    transform: scale(1.05);
}

.latest-cover-wrap .play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    background: rgba(233,93,33,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    box-shadow: 0 4px 24px rgba(233,93,33,0.4);
}

.latest-card:hover .latest-cover-wrap .play-btn {
    transform: translate(-50%, -50%) scale(1.1);
    box-shadow: 0 8px 40px rgba(233,93,33,0.5);
}

.latest-cover-wrap .play-btn svg {
    width: 20px;
    height: 20px;
    fill: white;
    margin-left: 3px;
}

.latest-card-video .latest-video-wrap iframe,
.latest-card-video .latest-video-wrap video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: none;
    object-fit: cover;
}

.latest-card {
    display: block;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-dark);
    background: var(--surface-dark);
    transition: all 0.4s;
    text-decoration: none;
    color: inherit;
}

.latest-card:hover {
    border-color: var(--orange-main);
    transform: translateY(-4px);
    box-shadow: 0 8px 28px rgba(233,93,33,0.07);
}

.latest-thumb {
    width: 100%;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.latest-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.latest-card:hover .latest-thumb img {
    transform: scale(1.05);
}

.latest-info {
    padding: 20px;
}

.latest-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--orange-main);
    background: rgba(233,93,33,0.1);
    padding: 3px 10px;
    border-radius: 100px;
    margin-bottom: 12px;
}

.latest-title {
    font-family: var(--font-cn-body);
    font-weight: 700;
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 8px;
}

.latest-meta {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-warm-grey);
}

.latest-grid .latest-card:nth-child(1) { transition-delay: 0s; }
.latest-grid .latest-card:nth-child(2) { transition-delay: 0.12s; }
.latest-grid .latest-card:nth-child(3) { transition-delay: 0.24s; }

/* Knowledge Hub */
.section-knowledge {
    padding: 144px 48px;
    max-width: 900px;
    margin: 0 auto;
}

.knowledge-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 64px;
}

/* 编辑化排版：左对齐、小图标，摆脱"居中图标卡"模板感 */
.knowledge-card {
    background: var(--surface-dark);
    border: 1px solid var(--border-dark);
    border-radius: 16px;
    padding: 36px 32px;
    text-align: left;
    transition: all 0.4s;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.knowledge-card:hover {
    border-color: var(--text-warm-grey);
    transform: translateY(-4px);
}

.knowledge-card-premium {
    border-color: rgba(233,93,33,0.3);
    background: linear-gradient(160deg, var(--surface-dark), rgba(233,93,33,0.03));
}

.knowledge-card-premium:hover {
    border-color: var(--orange-main);
    box-shadow: 0 8px 28px rgba(233,93,33,0.08);
}

.knowledge-badge {
    position: absolute;
    top: -10px;
    right: 24px;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--bg-warm-black);
    background: var(--orange-main);
    padding: 4px 14px;
    border-radius: 100px;
    font-weight: 700;
}

.knowledge-icon {
    margin-bottom: 16px;
    color: var(--text-warm-grey);
    transition: color 0.3s;
}

.knowledge-icon svg {
    display: block;
    width: 24px;
    height: 24px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.knowledge-card:hover .knowledge-icon {
    color: var(--orange-light);
}

.knowledge-name {
    font-family: var(--font-cn-body);
    font-weight: 700;
    font-size: 20px;
    margin-bottom: 12px;
}

.knowledge-desc {
    font-family: var(--font-cn-body);
    font-size: 14px;
    color: var(--text-warm-grey);
    line-height: 1.8;
    margin-bottom: 24px;
}

.knowledge-tag-free {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--green-main);
    background: rgba(0,140,140,0.1);
    padding: 4px 14px;
    border-radius: 100px;
    margin-bottom: 20px;
}

.knowledge-btn {
    display: inline-block;
    padding: 12px 28px;
    font-family: var(--font-cn-body);
    font-size: 14px;
    font-weight: 700;
    border-radius: 100px;
    transition: all 0.3s;
    margin-top: auto;
}

.knowledge-btn-free {
    color: var(--green-main);
    border: 1px solid rgba(0,140,140,0.3);
    background: transparent;
}

.knowledge-btn-free:hover {
    background: rgba(0,140,140,0.1);
    border-color: var(--green-main);
    color: var(--green-light);
}

.knowledge-btn-premium {
    color: var(--text-warm-white);
    background: var(--orange-main);
    border: none;
}

.knowledge-btn-premium:hover {
    background: var(--orange-deep);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(233,93,33,0.3);
}

/* Work With Me */
.section-collab {
    padding: 144px 48px;
    max-width: 1000px;
    margin: 0 auto;
}

.collab-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 64px;
}

/* 编辑化排版：左对齐、小图标（顶部色条保留作身份色） */
.collab-card {
    background: var(--surface-dark);
    border: 1px solid var(--border-dark);
    border-radius: 16px;
    padding: 36px;
    padding-top: 40px;
    text-align: left;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.collab-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    border-radius: 16px 16px 0 0;
    opacity: 0.7;
    transition: opacity 0.3s;
}

.collab-card:nth-child(1)::before {
    background: var(--orange-main);
}

.collab-card:nth-child(2)::before {
    background: var(--grad-orange-green);
}

.collab-card:nth-child(3)::before {
    background: var(--green-main);
}

.collab-card:hover {
    border-color: var(--orange-main);
    transform: translateY(-4px);
}

.collab-card:hover::before {
    opacity: 1;
}

.collab-icon {
    width: 40px;
    height: 40px;
    margin: 0 0 16px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.collab-icon svg {
    width: 26px;
    height: 26px;
    stroke: var(--text-warm-grey);
    fill: none;
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: stroke 0.3s, filter 0.3s;
}

.collab-card:hover .collab-icon svg {
    stroke: var(--orange-main);
    filter: drop-shadow(0 0 6px rgba(233,93,33,0.25));
}

.collab-card:nth-child(n+2):hover .collab-icon svg {
    stroke: var(--green-light);
    filter: drop-shadow(0 0 6px rgba(0,140,140,0.25));
}

.collab-card:nth-child(n+2):hover {
    border-color: var(--green-main);
}

.collab-title {
    font-family: var(--font-en-display);
    font-weight: 700;
    font-size: 18px;
    margin-bottom: 12px;
}

.collab-desc {
    font-family: var(--font-cn-body);
    font-size: 14px;
    color: var(--text-warm-grey);
    line-height: 1.7;
}

/* Product Showcase */
.product-showcase {
    margin-top: 64px;
}

.product-showcase-label {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-warm-grey);
    text-transform: uppercase;
    letter-spacing: 2px;
    text-align: center;
    margin-bottom: 32px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-dark);
    background: var(--surface-dark);
    transition: all 0.4s;
}

.product-card:hover {
    border-color: var(--orange-main);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(233,93,33,0.1);
}

.product-card .product-video-cover {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    cursor: pointer;
    overflow: hidden;
}

.product-card .product-video-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.product-card:hover .product-video-cover img {
    transform: scale(1.05);
}

.product-card .product-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 48px;
    height: 48px;
    background: rgba(233,93,33,0.85);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    box-shadow: 0 4px 16px rgba(233,93,33,0.3);
}

.product-card:hover .product-play {
    transform: translate(-50%, -50%) scale(1.1);
}

.product-card .product-play svg {
    width: 18px;
    height: 18px;
    fill: white;
    margin-left: 2px;
}

.product-card .product-info {
    padding: 16px 20px;
}

.product-card .product-name {
    font-family: var(--font-en-display);
    font-weight: 700;
    font-size: 15px;
    margin-bottom: 4px;
}

.product-card .product-desc {
    font-family: var(--font-cn-body);
    font-size: 12px;
    color: var(--text-warm-grey);
}

.hardware-products {
    margin-top: 64px;
    padding-top: 52px;
    border-top: 1px solid var(--border-dark);
    scroll-margin-top: 96px;
}

.hardware-products-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 48px;
}

.hardware-products-label {
    display: block;
    margin-bottom: 12px;
    color: var(--green-light);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.hardware-products h3 {
    margin: 0;
    color: var(--text-warm-white);
    font-family: var(--font-cn-body);
    font-size: 30px;
    font-weight: 800;
    line-height: 1.25;
}

.hardware-products-head > p {
    max-width: 430px;
    margin: 0;
    color: var(--text-warm-grey);
    font-family: var(--font-cn-body);
    font-size: 13px;
    line-height: 1.8;
}

.hardware-product-grid {
    margin-top: 30px;
}

.hardware-products .product-card {
    border-radius: 8px;
}

.hardware-products .product-info {
    min-height: 76px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.collab-cta {
    margin-top: 48px;
    text-align: center;
}

/* Unified commercial hub */
.commercial-hub {
    max-width: 1180px;
    margin: 0 auto;
    padding: 136px 48px 120px;
    scroll-margin-top: 96px;
}

.commercial-hub-head {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
    gap: 64px;
    align-items: end;
    margin-bottom: 72px;
}

.commercial-hub-head .section-label {
    display: block;
    margin-bottom: 28px;
}

.commercial-hub-head .section-title {
    max-width: 760px;
    margin: 0;
}

.commercial-hub-head > p {
    max-width: 390px;
    margin: 0 0 7px auto;
    color: var(--text-warm-grey);
    font-family: var(--font-cn-body);
    font-size: 15px;
    line-height: 1.9;
}

.commercial-paths {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    align-items: stretch;
}

.commercial-path {
    position: relative;
    min-height: 510px;
    padding: 30px 28px 28px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--border-dark);
    border-radius: 8px;
    background: rgba(28, 28, 26, 0.72);
    transition: transform 0.35s ease, border-color 0.35s ease, background 0.35s ease, box-shadow 0.35s ease;
}

.commercial-path::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(255, 255, 255, 0.18);
}

.commercial-path-start::before { background: var(--green-main); }
.commercial-path-member::before { background: var(--orange-main); }
.commercial-path-work::before { background: linear-gradient(90deg, var(--orange-main), var(--green-main)); }

.commercial-path-member {
    border-color: rgba(233, 93, 33, 0.42);
    background:
        radial-gradient(circle at 88% 8%, rgba(233, 93, 33, 0.15), transparent 30%),
        rgba(32, 29, 26, 0.92);
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.22);
    transform: translateY(-12px);
}

.commercial-path:hover {
    transform: translateY(-6px);
    border-color: rgba(255, 255, 255, 0.2);
    background-color: rgba(35, 35, 32, 0.9);
}

.commercial-path-member:hover {
    transform: translateY(-18px);
    border-color: rgba(233, 93, 33, 0.72);
    box-shadow: 0 30px 90px rgba(0, 0, 0, 0.3), 0 0 50px rgba(233, 93, 33, 0.08);
}

.commercial-path-index {
    margin-bottom: 46px;
    color: rgba(255, 255, 255, 0.18);
    font-family: var(--font-en-display);
    font-size: 54px;
    font-weight: 800;
    line-height: 1;
}

.commercial-path-meta {
    margin-bottom: 14px;
    color: var(--text-warm-grey);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 1.2px;
}

.commercial-path-start .commercial-path-meta { color: var(--green-light); }
.commercial-path-member .commercial-path-meta { color: var(--orange-light); }

.partner-entry-context {
    width: fit-content;
    margin: -20px 0 16px;
    padding: 6px 9px;
    border: 1px solid rgba(0, 140, 140, 0.46);
    border-radius: 4px;
    color: var(--green-light);
    background: rgba(0, 140, 140, 0.08);
    font-family: var(--font-mono);
    font-size: 9px;
    line-height: 1.2;
    letter-spacing: 0;
}

.partner-entry-context[hidden] { display: none; }

.commercial-path h3 {
    max-width: 280px;
    margin: 0 0 14px;
    color: var(--text-warm-white);
    font-family: var(--font-cn-body);
    font-size: 24px;
    font-weight: 800;
    line-height: 1.35;
}

.commercial-path > p {
    min-height: 72px;
    margin: 0 0 24px;
    color: var(--text-warm-grey);
    font-family: var(--font-cn-body);
    font-size: 13px;
    line-height: 1.8;
}

.commercial-path ul {
    display: grid;
    gap: 10px;
    margin: 0 0 28px;
    padding: 0;
    list-style: none;
}

.commercial-path li {
    position: relative;
    padding-left: 16px;
    color: var(--text-sand);
    font-family: var(--font-cn-body);
    font-size: 13px;
    line-height: 1.65;
}

.commercial-path li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.72em;
    width: 6px;
    height: 1px;
    background: currentColor;
    opacity: 0.55;
}

.commercial-path-actions {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-top: auto;
}

.commercial-link {
    min-height: 44px;
    padding: 0 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    border-radius: 100px;
    font-family: var(--font-cn-body);
    font-size: 13px;
    font-weight: 800;
    line-height: 1;
    white-space: nowrap;
    cursor: pointer;
    transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.commercial-link:hover { transform: translateY(-2px); }

.commercial-link-green {
    color: var(--green-light);
    border-color: rgba(0, 140, 140, 0.45);
    background: rgba(0, 140, 140, 0.1);
}

.commercial-link-orange {
    width: 100%;
    margin-top: auto;
    color: var(--text-warm-white);
    background: var(--orange-main);
}

.commercial-link-orange:hover { background: var(--orange-deep); }

.commercial-link-neutral {
    width: 100%;
    margin-top: auto;
    color: var(--text-warm-white);
    border-color: rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.04);
}

.commercial-link-neutral:hover { border-color: rgba(255, 255, 255, 0.32); }

.commercial-text-link {
    color: var(--text-warm-grey);
    font-family: var(--font-cn-body);
    font-size: 13px;
    text-decoration: underline;
    text-decoration-color: rgba(255, 255, 255, 0.22);
    text-underline-offset: 5px;
}

.commercial-price {
    margin: auto 0 18px;
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.commercial-price strong {
    color: var(--text-warm-white);
    font-family: var(--font-en-display);
    font-size: 34px;
    line-height: 1;
}

.commercial-price span {
    color: var(--text-warm-grey);
    font-family: var(--font-cn-body);
    font-size: 12px;
}

.skill-letter-price {
    flex-wrap: wrap;
    row-gap: 7px;
}

.skill-letter-price .commercial-price-public {
    width: 100%;
    color: var(--orange-light);
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0;
}

.skill-letter-price .commercial-price-public s {
    margin-left: 5px;
    color: var(--text-warm-grey);
    text-decoration-color: var(--orange-main);
    text-decoration-thickness: 1px;
}

.commercial-price-custom {
    display: grid;
    gap: 6px;
}

.commercial-price-custom strong {
    font-family: var(--font-cn-body);
    font-size: 20px;
}

.skill-letter-delivery {
    margin: 0 0 20px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.skill-letter-delivery span {
    min-width: 0;
    padding: 11px 8px 10px;
    display: grid;
    gap: 4px;
    text-align: center;
}

.skill-letter-delivery span + span {
    border-left: 1px solid rgba(255, 255, 255, 0.08);
}

.skill-letter-delivery strong {
    color: var(--text-warm-white);
    font-family: var(--font-cn-body);
    font-size: 12px;
    line-height: 1.25;
}

.skill-letter-delivery small {
    color: var(--text-warm-grey);
    font-family: var(--font-mono);
    font-size: 8px;
    line-height: 1.35;
}

.commercial-member-actions {
    margin-top: auto;
    display: grid;
    gap: 10px;
}

.commercial-member-actions .commercial-link-orange {
    margin-top: 0;
}

.skill-letter-sample-link,
.member-sample-inline {
    border: 0;
    background: transparent;
    color: var(--text-warm-grey);
    font-family: var(--font-cn-body);
    cursor: pointer;
    text-decoration: underline;
    text-decoration-color: rgba(255, 255, 255, 0.22);
    text-underline-offset: 5px;
}

.skill-letter-sample-link {
    min-height: 34px;
    font-size: 12px;
}

.skill-letter-sample-link:hover,
.skill-letter-sample-link:focus-visible,
.member-sample-inline:hover,
.member-sample-inline:focus-visible {
    color: var(--green-light);
    text-decoration-color: currentColor;
}

.member-sample-inline {
    margin-top: 24px;
    padding: 0;
    font-size: 13px;
}

.member-sample-inline span {
    display: inline-block;
    margin-left: 4px;
    text-decoration: none;
}

.member-checkout[hidden] { display: none; }

.member-checkout {
    margin-top: 42px;
    padding: 46px 0 0;
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(420px, 1.05fr);
    gap: 48px;
    align-items: start;
    border-top: 1px solid rgba(233, 93, 33, 0.36);
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.28s ease, transform 0.28s ease;
}

.member-checkout.is-open {
    opacity: 1;
    transform: translateY(0);
}

.member-checkout-copy {
    position: relative;
    padding-right: 54px;
}

.member-checkout-copy h3 {
    margin: 0 0 16px;
    font-family: var(--font-cn-body);
    font-size: 32px;
    line-height: 1.25;
}

.member-checkout-copy p {
    max-width: 420px;
    margin: 0;
    color: var(--text-warm-grey);
    font-family: var(--font-cn-body);
    font-size: 14px;
    line-height: 1.85;
}

.member-checkout-benefits {
    display: grid;
    gap: 13px;
    margin: 28px 0 0;
    padding: 0;
    list-style: none;
}

.member-checkout-benefits li {
    position: relative;
    display: grid;
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 12px;
    padding-left: 18px;
    font-family: var(--font-cn-body);
    font-size: 13px;
    line-height: 1.65;
}

.member-checkout-benefits li::before {
    content: '';
    position: absolute;
    top: 0.58em;
    left: 0;
    width: 6px;
    height: 6px;
    border: 1px solid var(--orange-main);
    transform: rotate(45deg);
}

.member-checkout-benefits strong {
    color: var(--text-warm-white);
    font-weight: 600;
}

.member-checkout-benefits span {
    color: var(--text-warm-grey);
}

.member-checkout-close {
    position: absolute;
    top: 0;
    right: 0;
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border: 1px solid var(--border-dark);
    border-radius: 50%;
    color: var(--text-warm-grey);
    background: transparent;
    cursor: pointer;
    transition: color 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.member-checkout-close:hover {
    color: var(--text-warm-white);
    border-color: var(--orange-main);
    transform: rotate(90deg);
}

.member-checkout-close svg {
    width: 17px;
    height: 17px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.7;
    stroke-linecap: round;
}

.member-checkout .paid-subscribe-card {
    border-radius: 8px;
}

/* Skill Letter sample */
body.skill-sample-open {
    overflow: hidden;
}

.skill-sample-modal {
    position: fixed;
    inset: 0;
    z-index: 15500;
    display: grid;
    place-items: center;
    padding: 28px;
    visibility: hidden;
    pointer-events: none;
}

.skill-sample-modal.is-open {
    visibility: visible;
    pointer-events: auto;
}

.skill-sample-backdrop {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    padding: 0;
    border: 0;
    background: rgba(8, 8, 7, 0.72);
    opacity: 0;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: opacity 0.28s ease;
}

.skill-sample-modal.is-open .skill-sample-backdrop {
    opacity: 1;
}

.skill-sample-panel {
    position: relative;
    z-index: 1;
    width: min(820px, 100%);
    max-height: min(88dvh, 860px);
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 8px;
    background: rgba(24, 24, 22, 0.98);
    box-shadow: 0 32px 110px rgba(0, 0, 0, 0.58);
    color: var(--text-warm-white);
    opacity: 0;
    transform: translateY(18px) scale(0.98);
    transform-origin: 50% 100%;
    transition: opacity 0.24s ease, transform 0.38s cubic-bezier(0.16, 1, 0.3, 1);
}

.skill-sample-modal.is-open .skill-sample-panel {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.skill-sample-head,
.skill-sample-footer {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    background: rgba(24, 24, 22, 0.94);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.skill-sample-head {
    min-height: 76px;
    padding: 14px 18px 14px 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.09);
}

.skill-sample-head > div {
    display: grid;
    gap: 3px;
}

.skill-sample-head span,
.skill-sample-eyebrow,
.skill-sample-section > span,
.skill-sample-template > span,
.skill-sample-footer > span {
    color: var(--orange-light);
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 1px;
}

.skill-sample-head strong {
    font-family: var(--font-en-display);
    font-size: 15px;
    letter-spacing: 0;
}

.skill-sample-close {
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-warm-grey);
    font: 23px/1 Arial, sans-serif;
    cursor: pointer;
}

.skill-sample-close:hover,
.skill-sample-close:focus-visible {
    border-color: rgba(233, 93, 33, 0.55);
    color: var(--text-warm-white);
}

.skill-sample-body {
    min-height: 0;
    padding: 34px 42px 40px;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.skill-sample-body > h2 {
    max-width: 680px;
    margin: 10px 0 14px;
    font-family: var(--font-cn-body);
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.2;
    letter-spacing: 0;
}

.skill-sample-body > p {
    max-width: 620px;
    margin: 0;
    color: var(--text-warm-grey);
    font-family: var(--font-cn-body);
    font-size: 14px;
    line-height: 1.85;
}

.skill-sample-body > .skill-sample-eyebrow {
    color: var(--orange-light);
    font-size: 9px;
    line-height: 1.4;
    letter-spacing: 1px;
}

.skill-sample-section,
.skill-sample-template {
    margin-top: 34px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.09);
}

.skill-sample-section > span,
.skill-sample-template > span {
    color: var(--green-light);
}

.skill-sample-section h3 {
    margin: 8px 0 10px;
    font-family: var(--font-cn-body);
    font-size: 19px;
    line-height: 1.45;
}

.skill-sample-section p,
.skill-sample-section li,
.skill-sample-template p {
    color: var(--text-sand);
    font-family: var(--font-cn-body);
    font-size: 13px;
    line-height: 1.85;
}

.skill-sample-section ol {
    margin: 14px 0 0;
    padding-left: 20px;
}

.skill-sample-section li + li {
    margin-top: 7px;
}

.skill-sample-section li strong {
    margin-right: 8px;
    color: var(--text-warm-white);
}

.skill-sample-template code {
    margin-top: 12px;
    padding: 16px;
    display: block;
    overflow-wrap: anywhere;
    border-left: 2px solid var(--orange-main);
    background: rgba(233, 93, 33, 0.07);
    color: var(--text-warm-white);
    font-family: var(--font-mono);
    font-size: 11px;
    line-height: 1.75;
}

.skill-sample-template p {
    margin: 12px 0 0;
    color: var(--text-warm-grey);
}

.skill-sample-footer {
    min-height: 74px;
    padding: 12px 18px 12px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.09);
}

.skill-sample-footer > span {
    color: var(--text-warm-grey);
    letter-spacing: 0.4px;
}

.skill-sample-footer button {
    min-height: 44px;
    padding: 0 18px;
    border: 0;
    border-radius: 6px;
    background: var(--orange-main);
    color: var(--text-warm-white);
    font-family: var(--font-cn-body);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
}

.skill-sample-footer button:hover,
.skill-sample-footer button:focus-visible {
    background: var(--orange-deep);
}

/* Paid member newsletter */
.paid-subscribe {
    position: relative;
    max-width: 1100px;
    margin: 0 auto;
    padding: 104px 48px 96px;
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.7fr);
    gap: 48px;
    align-items: center;
    overflow: hidden;
}

.paid-subscribe#member-subscribe {
    scroll-margin-top: 112px;
}

.paid-subscribe-bg {
    position: absolute;
    inset: 48px 24px;
    z-index: -1;
    border-radius: 28px;
    background:
        radial-gradient(circle at 18% 18%, rgba(233, 93, 33, 0.18), transparent 34%),
        radial-gradient(circle at 82% 78%, rgba(0, 140, 140, 0.18), transparent 30%),
        linear-gradient(135deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.015));
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.paid-subscribe-kicker {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 1.8px;
    text-transform: uppercase;
    color: var(--orange-main);
    margin-bottom: 18px;
}

.paid-subscribe-title {
    font-family: var(--font-en-display);
    font-weight: 800;
    font-size: clamp(34px, 5vw, 58px);
    line-height: 0.98;
    letter-spacing: -2.5px;
    margin-bottom: 22px;
}

.paid-subscribe-desc {
    max-width: 520px;
    font-size: 16px;
    line-height: 1.9;
    color: var(--text-sand);
}

.paid-subscribe-points {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 32px;
}

.paid-subscribe-points span {
    padding: 8px 12px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 100px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-warm-grey);
    background: rgba(26, 26, 24, 0.55);
}

.paid-subscribe-card {
    position: relative;
    padding: 28px;
    background: rgba(30, 30, 27, 0.88);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 22px;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
}

.paid-subscribe-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    background: linear-gradient(135deg, rgba(233, 93, 33, 0.18), transparent 35%, rgba(0, 140, 140, 0.14));
    opacity: 0.6;
}

.paid-subscribe-card > * {
    position: relative;
    z-index: 1;
}

.paid-subscribe-card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 22px;
}

.paid-subscribe-card-head span {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 1.2px;
    color: var(--green-light);
    text-transform: uppercase;
}

.paid-subscribe-card-head strong {
    font-family: var(--font-cn-body);
    font-size: 18px;
    color: var(--text-warm-white);
}

.paid-subscribe-card-head strong s {
    margin-right: 8px;
    color: var(--text-warm-grey);
    font-size: 13px;
    font-weight: 500;
    text-decoration-color: var(--orange-main);
}

.subscribe-single-plan {
    margin: 0 0 22px;
    padding: 14px 0;
    color: var(--text-sand);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    font-family: var(--font-cn-body);
    font-size: 13px;
    line-height: 1.75;
}

.subscribe-plan-group {
    display: grid;
    gap: 10px;
    margin-bottom: 22px;
}

.subscribe-plan {
    display: grid;
    grid-template-columns: 18px minmax(0, 1fr);
    gap: 12px;
    align-items: flex-start;
    padding: 14px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.025);
    cursor: pointer;
    transition: border-color 0.25s, background 0.25s, transform 0.25s;
}

.subscribe-plan:hover,
.subscribe-plan.is-selected {
    border-color: rgba(233, 93, 33, 0.65);
    background: rgba(233, 93, 33, 0.08);
    transform: translateY(-1px);
}

.subscribe-plan input {
    width: 16px;
    height: 16px;
    margin-top: 2px;
    accent-color: var(--orange-main);
}

.subscribe-plan strong {
    display: block;
    font-family: var(--font-en-display);
    font-size: 18px;
    line-height: 1.2;
}

.subscribe-plan em {
    display: block;
    margin-top: 4px;
    font-style: normal;
    font-size: 12px;
    line-height: 1.6;
    color: var(--text-warm-grey);
}

.subscribe-email-label {
    display: block;
    margin-bottom: 8px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.8px;
    color: var(--text-warm-grey);
}

.subscribe-email-row {
    display: flex;
    gap: 10px;
}

.subscribe-email-input {
    min-width: 0;
    flex: 1;
    height: 46px;
    padding: 0 15px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-warm-white);
    background: rgba(0, 0, 0, 0.22);
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 100px;
    outline: none;
    transition: border-color 0.25s, box-shadow 0.25s;
}

.subscribe-email-input:focus {
    border-color: var(--orange-main);
    box-shadow: 0 0 0 3px rgba(233, 93, 33, 0.12);
}

.subscribe-submit {
    height: 46px;
    padding: 0 20px;
    border: none;
    border-radius: 100px;
    color: var(--text-warm-white);
    background: var(--orange-main);
    font-family: var(--font-en-display);
    font-size: 12px;
    font-weight: 800;
    white-space: nowrap;
    cursor: pointer;
    transition: transform 0.25s, box-shadow 0.25s, background 0.25s;
}

.subscribe-submit:hover {
    transform: translateY(-2px);
    background: var(--orange-deep);
    box-shadow: 0 10px 28px rgba(233, 93, 33, 0.22);
}

.subscribe-submit:disabled {
    cursor: wait;
    opacity: 0.72;
    transform: none;
    box-shadow: none;
}

.subscribe-trust {
    margin-top: 14px;
    font-size: 12px;
    line-height: 1.7;
    color: var(--text-warm-grey);
}

.subscribe-trust a {
    color: var(--green-light);
    text-decoration: underline;
    text-decoration-color: rgba(32, 178, 170, 0.45);
    text-underline-offset: 3px;
}

.subscribe-status {
    min-height: 20px;
    margin-top: 12px;
    font-size: 12px;
    line-height: 1.6;
    color: var(--text-warm-grey);
}

.subscribe-status.is-success { color: var(--green-light); }
.subscribe-status.is-error { color: var(--orange-light); }

.member-payment-success[hidden] { display: none; }

.member-payment-success {
    position: relative;
    min-height: 100%;
    padding: 30px;
    border: 1px solid rgba(0, 170, 160, 0.42);
    border-radius: 8px;
    background: rgba(20, 31, 28, 0.9);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
}

.member-payment-success::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(135deg, rgba(0, 170, 160, 0.14), transparent 46%, rgba(233, 93, 33, 0.1));
}

.member-payment-success > * {
    position: relative;
    z-index: 1;
}

.member-payment-success-mark {
    width: 46px;
    height: 46px;
    margin-bottom: 24px;
    display: grid;
    place-items: center;
    border: 1px solid var(--green-light);
    border-radius: 50%;
    color: var(--green-light);
    font-size: 24px;
}

.member-payment-success h3 {
    margin: 0 0 12px;
    font-family: var(--font-cn-body);
    font-size: 26px;
    line-height: 1.3;
}

.member-payment-success > p {
    margin: 0;
    color: var(--text-warm-grey);
    font-family: var(--font-cn-body);
    font-size: 13px;
    line-height: 1.8;
}

.member-payment-details {
    margin: 24px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.member-payment-details > div {
    padding: 12px 0;
    display: flex;
    justify-content: space-between;
    gap: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.member-payment-details dt,
.member-payment-details dd {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 11px;
    line-height: 1.6;
}

.member-payment-details dt { color: var(--text-warm-grey); }
.member-payment-details dd { color: var(--text-warm-white); text-align: right; }

.member-payment-next {
    display: grid;
    gap: 6px;
    padding: 15px;
    border-left: 2px solid var(--orange-main);
    background: rgba(233, 93, 33, 0.07);
}

.member-wecom-onboarding[hidden] { display: none; }

.member-wecom-onboarding {
    margin-top: 22px;
    padding: 18px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 150px;
    gap: 20px;
    align-items: center;
    border: 1px solid rgba(0, 170, 160, 0.34);
    background: rgba(5, 15, 14, 0.62);
}

.member-wecom-copy {
    display: grid;
    gap: 8px;
}

.member-wecom-copy > span {
    color: var(--green-light);
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0;
}

.member-wecom-copy > strong {
    color: var(--text-warm-white);
    font-family: var(--font-cn-body);
    font-size: 18px;
}

.member-wecom-copy > p,
.member-wecom-status {
    margin: 0;
    color: var(--text-warm-grey);
    font-family: var(--font-cn-body);
    font-size: 12px;
    line-height: 1.7;
}

.member-wecom-status {
    color: var(--green-light);
}

.member-wecom-retry {
    width: fit-content;
    margin-top: 4px;
    padding: 8px 12px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: transparent;
    color: var(--text-warm-white);
    font: 11px/1 var(--font-cn-body);
    cursor: pointer;
}

.member-wecom-qr-shell {
    width: 150px;
    aspect-ratio: 1;
    padding: 8px;
    display: grid;
    place-items: center;
    background: #fff;
}

.member-wecom-qr-shell img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.member-wecom-qr-loading {
    color: #202525;
    font-family: var(--font-cn-body);
    font-size: 12px;
}

@media (max-width: 640px) {
    .member-wecom-onboarding {
        grid-template-columns: 1fr;
    }

    .member-wecom-qr-shell {
        width: min(100%, 220px);
        justify-self: center;
    }
}

.member-payment-next strong {
    font-family: var(--font-cn-body);
    font-size: 13px;
}

.member-payment-next span {
    color: var(--text-warm-grey);
    font-family: var(--font-cn-body);
    font-size: 12px;
    line-height: 1.7;
}

.member-payment-home {
    display: inline-block;
    margin-top: 22px;
    color: var(--green-light);
    font-family: var(--font-cn-body);
    font-size: 13px;
    text-decoration: none;
}

/* Newsletter */
.newsletter {
    padding: 96px 48px;
    text-align: center;
    border-top: 1px solid var(--border-dark);
}

.newsletter-title {
    font-family: var(--font-en-display);
    font-weight: 800;
    font-size: 28px;
    letter-spacing: -1px;
    margin-bottom: 12px;
}

.newsletter-desc {
    font-family: var(--font-cn-body);
    font-size: 15px;
    color: var(--text-warm-grey);
    margin-bottom: 32px;
}

.newsletter-form {
    display: flex;
    justify-content: center;
    gap: 12px;
    max-width: 480px;
    margin: 0 auto;
}

.newsletter-input {
    flex: 1;
    padding: 14px 20px;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-warm-white);
    background: var(--surface-dark);
    border: 1px solid var(--border-dark);
    border-radius: 100px;
    outline: none;
    transition: border-color 0.3s;
}

.newsletter-input::placeholder {
    color: var(--text-warm-grey);
}

.newsletter-input:focus {
    border-color: var(--orange-main);
}

.newsletter-btn {
    padding: 14px 28px;
    font-family: var(--font-en-display);
    font-size: 13px;
    font-weight: 700;
    color: var(--text-warm-white);
    background: var(--orange-main);
    border: none;
    border-radius: 100px;
    cursor: pointer;
    transition: all 0.3s;
}

.newsletter-btn:hover {
    background: var(--orange-deep);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(233,93,33,0.3);
}

.cta-button {
    display: inline-block;
    margin-top: 48px;
    margin-bottom: 16px;
    padding: 14px 32px;
    font-family: var(--font-en-display);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--text-warm-white);
    background: var(--orange-main);
    border-radius: 100px;
    transition: all 0.3s;
}

.cta-button:hover {
    background: var(--orange-deep);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(233,93,33,0.18);
}

.about-platforms {
    margin-top: 72px;
    display: flex;
    justify-content: center;
    gap: 32px;
}

.social-icon-link {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.5px;
    color: var(--text-warm-grey);
    transition: color 0.3s;
}

.social-icon-link svg {
    width: 20px;
    height: 20px;
    fill: var(--text-warm-grey);
    transition: fill 0.3s;
}

.social-icon-link:hover {
    color: var(--text-warm-white);
}

.social-icon-link:hover svg {
    fill: var(--orange-main);
}

.platform-link {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 1px;
    color: var(--text-warm-grey);
    text-transform: uppercase;
    transition: color 0.3s;
    position: relative;
}

.platform-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--orange-main);
    transition: width 0.3s;
}

.platform-link:hover {
    color: var(--text-warm-white);
}

.platform-link:hover::after {
    width: 100%;
}

/* ========== SCREEN 3: FEATURED ========== */
.section-featured {
    padding: 144px 48px;
    max-width: 1240px;
    margin: 0 auto;
}

.section-header {
    margin-bottom: 80px;
}

/* 左题右语的编辑排版：利用大标题右侧的空白 */
.section-header-split {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 48px;
}

.section-intro {
    max-width: 380px;
    font-family: var(--font-cn-body);
    font-size: 15px;
    line-height: 1.9;
    color: var(--text-warm-grey);
    padding-bottom: 10px;
}

@media (max-width: 768px) {
    .section-header-split {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    .section-intro {
        padding-bottom: 0;
        font-size: 13px;
    }
}

.section-title {
    font-family: var(--font-en-display);
    font-weight: 800;
    font-size: clamp(40px, 5vw, 56px);
    letter-spacing: -2.5px;
    margin-top: 16px;
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

/* (video-card styles removed - merged into topic-video) */

/* ========== SCREEN 4: TOPICS (merged with videos) ========== */
.section-topics {
    padding: 144px 48px;
    max-width: 1240px;
    margin: 0 auto;
}

.topic-list {
    margin-top: 80px;
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.topic-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.topic-block:nth-child(even) .topic-video {
    order: -1;
}

.topic-text {
    padding: 20px 0;
}

.topic-name {
    font-family: var(--font-en-display);
    font-weight: 800;
    font-size: 38px;
    letter-spacing: -1.5px;
    margin-bottom: 16px;
    transition: color 0.3s;
}

.topic-desc {
    font-family: var(--font-cn-body);
    font-size: 16px;
    color: var(--text-warm-grey);
    /* 300 字重已从字体包裁掉；400 在暗底上可读性更好 */
    font-weight: 400;
    line-height: 1.8;
}

.topic-video {
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-dark);
    transition: all 0.4s;
}

.topic-video:hover {
    border-color: var(--orange-main);
    box-shadow: 0 16px 48px rgba(233,93,33,0.1);
}

.topic-video iframe {
    width: 100%;
    aspect-ratio: 16/9;
    display: block;
    border: none;
}

/* ========== PODCAST: SILICON STORY ========== */
.section-podcast {
    padding: 104px 48px;
    background:
        linear-gradient(90deg, rgba(233, 93, 33, 0.045), transparent 36%),
        linear-gradient(270deg, rgba(0, 140, 140, 0.05), transparent 38%);
}

.podcast-shell {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 236px minmax(0, 1fr) minmax(260px, 0.66fr);
    gap: 48px;
    align-items: center;
}

.podcast-cover-link {
    position: relative;
    display: block;
    width: 100%;
    aspect-ratio: 1;
    overflow: hidden;
    border: 1px solid var(--border-dark);
    border-radius: 6px;
    background: var(--surface-card);
}

.podcast-cover-link::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid transparent;
    transition: border-color 0.35s ease;
    pointer-events: none;
}

.podcast-cover-link:hover::after {
    border-color: rgba(233, 93, 33, 0.72);
}

.podcast-cover-link img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    transition: transform 0.55s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.podcast-cover-link:hover img {
    transform: scale(1.035);
}

.podcast-cover-badge {
    position: absolute;
    left: 12px;
    bottom: 12px;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 7px 10px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    background: rgba(18, 18, 17, 0.84);
    color: var(--text-warm-white);
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 1.2px;
    backdrop-filter: blur(10px);
}

.podcast-cover-badge svg {
    width: 14px;
    height: 14px;
    fill: var(--orange-main);
}

.podcast-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 18px;
    margin-bottom: 20px;
    color: var(--orange-main);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 1.3px;
}

.podcast-meta span + span {
    color: var(--green-main);
}

.podcast-copy h2 {
    margin: 0;
    color: var(--text-warm-white);
    font-family: var(--font-en-display);
    font-size: 56px;
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: 0;
}

.podcast-copy h2 small {
    display: block;
    margin-top: 14px;
    color: var(--text-warm-grey);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 400;
    line-height: 1.4;
    letter-spacing: 1.8px;
}

.podcast-copy > p {
    max-width: 560px;
    margin: 24px 0 0;
    color: var(--text-sand);
    font-family: var(--font-cn-body);
    font-size: 16px;
    line-height: 1.85;
}

.podcast-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 18px;
    margin-top: 30px;
    color: var(--text-warm-grey);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.8px;
}

.podcast-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 18px;
    border: 1px solid var(--orange-main);
    border-radius: 4px;
    background: var(--orange-main);
    color: #fff;
    font-family: var(--font-cn-body);
    font-size: 13px;
    font-weight: 600;
    transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.podcast-primary:hover {
    border-color: var(--green-main);
    background: var(--green-main);
    transform: translateY(-2px);
}

.podcast-latest {
    display: flex;
    min-width: 0;
    flex-direction: column;
    gap: 15px;
    padding: 12px 0 12px 38px;
    border-left: 1px solid rgba(233, 93, 33, 0.42);
    transition: border-color 0.3s ease, transform 0.3s ease;
}

.podcast-latest:hover {
    border-color: var(--green-main);
    transform: translateX(4px);
}

.podcast-latest > span {
    color: var(--orange-main);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 1.2px;
}

.podcast-latest strong {
    color: var(--text-warm-white);
    font-family: var(--font-cn-body);
    font-size: 18px;
    font-weight: 600;
    line-height: 1.65;
}

.podcast-latest small {
    color: var(--text-warm-grey);
    font-family: var(--font-cn-body);
    font-size: 12px;
}

/* Video cover card (lazy load replacement) */
.video-cover {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    cursor: pointer;
    overflow: hidden;
    background: var(--surface-card);
}

.video-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.video-cover:hover img {
    transform: scale(1.05);
}

.video-cover .play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 64px;
    height: 64px;
    background: rgba(233,93,33,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    box-shadow: 0 4px 24px rgba(233,93,33,0.4);
}

.video-cover:hover .play-btn {
    transform: translate(-50%, -50%) scale(1.1);
    background: var(--orange-main);
    box-shadow: 0 8px 40px rgba(233,93,33,0.5);
}

.video-cover .play-btn svg {
    width: 24px;
    height: 24px;
    fill: white;
    margin-left: 3px;
}

.video-cover .view-badge {
    position: absolute;
    bottom: 12px;
    left: 12px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.5px;
    color: #fff;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 4px 10px;
    border-radius: 100px;
}

/* Cmd+K Command Palette */
.cmd-palette-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: var(--z-cmd-palette);
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding-top: 20vh;
}

.cmd-palette-overlay.open {
    display: flex;
}

.cmd-palette {
    width: 520px;
    max-width: 90vw;
    background: var(--surface-dark);
    border: 1px solid var(--border-dark);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 24px 80px rgba(0,0,0,0.5);
    animation: paletteIn 0.2s ease-out;
}

@keyframes paletteIn {
    from { opacity: 0; transform: scale(0.95) translateY(-10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.cmd-palette-input {
    width: 100%;
    padding: 18px 20px;
    font-family: var(--font-mono);
    font-size: 15px;
    color: var(--text-warm-white);
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-dark);
    outline: none;
}

.cmd-palette-input::placeholder {
    color: var(--text-warm-grey);
}

.cmd-palette-list {
    max-height: 320px;
    overflow-y: auto;
    padding: 8px;
}

.cmd-palette-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.15s;
    font-family: var(--font-cn-body);
    font-size: 14px;
    color: var(--text-sand);
}

.cmd-palette-item:hover,
.cmd-palette-item.active {
    background: rgba(233,93,33,0.1);
    color: var(--text-warm-white);
}

.cmd-palette-item .cmd-icon {
    width: 20px;
    text-align: center;
    font-size: 16px;
    flex-shrink: 0;
}

.cmd-palette-item .cmd-shortcut {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-warm-grey);
    opacity: 0.5;
}

.cmd-palette-hint {
    padding: 10px 16px;
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-warm-grey);
    opacity: 0.4;
    text-align: center;
    border-top: 1px solid var(--border-dark);
}

/* Typewriter cursor */
.typewriter-cursor {
    display: inline-block;
    width: 2px;
    height: 1em;
    background: var(--text-warm-grey);
    margin-left: 4px;
    animation: blink 1s step-end infinite;
    vertical-align: middle;
}

@keyframes blink {
    50% { opacity: 0; }
}

/* Konami easter egg */
.konami-active {
    animation: konamiFlash 0.6s ease;
}

@keyframes konamiFlash {
    0% { filter: brightness(1); }
    50% { filter: brightness(2) hue-rotate(30deg); }
    100% { filter: brightness(1); }
}

.topic-video-source {
    padding: 12px 16px;
    background: var(--surface-dark);
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-warm-grey);
}

/* ========== SCREEN 5: FOOTER ========== */
footer {
    padding: 120px 48px 80px;
    text-align: center;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 3px;
    background: var(--grad-orange-green);
    border-radius: 100px;
}

.footer-brand {
    font-family: var(--font-en-display);
    font-weight: 800;
    font-size: 18px;
    letter-spacing: -0.5px;
    margin-bottom: 40px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 56px;
}

.footer-icon-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--border-dark);
    transition: all 0.3s;
}

.footer-icon-link svg {
    width: 20px;
    height: 20px;
    fill: var(--text-warm-grey);
    transition: fill 0.3s;
}

.footer-icon-link:hover {
    border-color: var(--orange-main);
    background: rgba(233,93,33,0.1);
}

.footer-icon-link:hover svg {
    fill: var(--orange-main);
}

.footer-slogan {
    font-family: var(--font-en-serif);
    font-style: italic;
    font-size: 20px;
    color: var(--text-warm-grey);
    opacity: 0.6;
    margin-bottom: 40px;
}

.footer-policy-links {
    margin: -14px 0 32px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px 22px;
}

.footer-policy-links a {
    color: var(--text-warm-grey);
    font-family: var(--font-mono);
    font-size: 10px;
    transition: color 0.2s;
}

.footer-policy-links a:hover {
    color: var(--green-light);
}

.footer-copy {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-warm-grey);
    opacity: 0.4;
}

/* ========== ANIMATIONS ========== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes floatUp {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-8px); }
}

/* Scroll reveal with stagger */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.15s; }
.reveal-delay-2 { transition-delay: 0.3s; }
.reveal-delay-3 { transition-delay: 0.45s; }

/* Section dividers */
.section-divider {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-dark), rgba(233,93,33,0.3), var(--border-dark), transparent);
    margin: 0;
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--surface-dark);
    border: 1px solid var(--border-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: var(--z-back-to-top);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s;
    pointer-events: none;
}

.back-to-top.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.back-to-top:hover {
    border-color: var(--orange-main);
    background: rgba(233,93,33,0.1);
}

.back-to-top.is-context-hidden {
    opacity: 0;
    transform: translateY(12px);
    pointer-events: none;
}

.back-to-top svg {
    width: 20px;
    height: 20px;
    stroke: var(--text-warm-grey);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: stroke 0.3s;
}

.back-to-top:hover svg {
    stroke: var(--orange-main);
}

/* BTX floating guide */
#arTrigger.ar-trigger-merged,
#arTrigger.ar-trigger-merged + .ar-status,
#arTrigger.ar-trigger-merged + .ar-status + .ar-hint {
    display: none !important;
}

.floating-subscribe {
    --btx-x: 0px;
    --btx-y: 0px;
    --btx-rotate: 0deg;
    position: fixed;
    right: 24px;
    bottom: 76px;
    z-index: calc(var(--z-back-to-top) + 1);
    width: 340px;
    height: 164px;
    display: block;
    padding: 0;
    border: 0;
    background: none;
    color: var(--text-warm-white);
    font: inherit;
    text-align: left;
    cursor: pointer;
    transform: translateZ(0);
    transition: transform 0.3s ease, opacity 0.25s;
}

.floating-subscribe.is-context-hidden {
    opacity: 0;
    transform: translateY(24px);
    pointer-events: none;
}

.floating-subscribe-copy {
    position: absolute;
    left: 0;
    top: 34px;
    z-index: 1;
    width: 250px;
    min-height: 104px;
    padding: 14px 48px 14px 15px;
    overflow: hidden;
    border: 1px solid rgba(255, 252, 248, 0.12);
    border-radius: 8px;
    background: rgba(24, 24, 22, 0.86);
    box-shadow: 0 18px 54px rgba(0, 0, 0, 0.32);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}

.floating-subscribe-copy::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(115deg, rgba(233, 93, 33, 0.1), transparent 44%, rgba(0, 140, 140, 0.1));
}

.floating-subscribe-copy::after {
    content: '';
    position: absolute;
    right: -7px;
    top: 39px;
    width: 12px;
    height: 12px;
    border-top: 1px solid rgba(255, 252, 248, 0.12);
    border-right: 1px solid rgba(255, 252, 248, 0.12);
    background: rgba(24, 24, 22, 0.9);
    transform: rotate(45deg);
}

.floating-subscribe:hover .floating-subscribe-copy,
.floating-subscribe:focus-visible .floating-subscribe-copy {
    border-color: rgba(233, 93, 33, 0.5);
    background: rgba(30, 30, 27, 0.92);
    transform: translateX(-3px);
}

.floating-subscribe:focus-visible {
    outline: 2px solid var(--green-light);
    outline-offset: 4px;
}

.floating-subscribe:active {
    transform: scale(0.97);
    transition-duration: 90ms;
}

.floating-subscribe-mascot {
    position: absolute;
    top: 2px;
    right: 2px;
    z-index: 2;
    width: 146px;
    height: 146px;
    display: grid;
    place-items: center;
    transform: translate3d(var(--btx-x), var(--btx-y), 0) rotate(var(--btx-rotate));
    transform-origin: 50% 50%;
    transition: transform 0.24s ease-out;
    will-change: transform;
}

.btx-morph-canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.floating-subscribe-mascot .btx-morph-canvas {
    filter: drop-shadow(0 15px 18px rgba(0, 0, 0, 0.34));
    will-change: transform;
}

.floating-subscribe-kicker {
    display: block;
    margin-bottom: 4px;
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 1.2px;
    color: var(--orange-main);
    text-transform: uppercase;
}

.floating-subscribe strong {
    display: block;
    font-family: var(--font-cn-body);
    font-size: 15px;
    line-height: 1.35;
    letter-spacing: 0;
}

.floating-subscribe em {
    display: block;
    margin: 0;
    font-style: normal;
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--text-warm-grey);
    white-space: nowrap;
}

.floating-subscribe-meta {
    position: relative;
    z-index: 3;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 15px;
}

.floating-subscribe-cta {
    position: relative;
    z-index: 3;
    display: inline-flex;
    align-items: center;
    flex: 0 0 auto;
    padding: 4px 6px;
    border: 1px solid rgba(233, 93, 33, 0.42);
    border-radius: 5px;
    background: rgba(233, 93, 33, 0.12);
    color: var(--text-warm-white);
    font-family: var(--font-mono);
    font-size: 9px;
    line-height: 1.2;
    font-weight: 700;
    white-space: nowrap;
    transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.floating-subscribe-mobile-cta {
    display: none;
}

.floating-subscribe:hover .floating-subscribe-cta,
.floating-subscribe:focus-visible .floating-subscribe-cta {
    border-color: var(--orange-main);
    background: var(--orange-main);
}

.floating-subscribe:hover .floating-subscribe-mascot .btx-morph-canvas,
.floating-subscribe:focus-visible .floating-subscribe-mascot .btx-morph-canvas {
    filter:
        drop-shadow(0 16px 20px rgba(0, 0, 0, 0.42))
        drop-shadow(0 0 12px rgba(0, 140, 140, 0.14));
    transform: translateY(-4px) rotate(1deg);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), filter 0.25s ease;
}

/* BTX intelligent reception */
body.btx-chat-open {
    overflow: hidden;
}

body.btx-chat-open .floating-subscribe {
    opacity: 0;
    transform: translateY(18px) scale(0.96);
    pointer-events: none;
}

.btx-chat-layer {
    position: fixed;
    inset: 0;
    z-index: 15000;
    visibility: hidden;
    pointer-events: none;
}

.btx-chat-layer.is-open,
.btx-chat-layer.is-closing {
    visibility: visible;
}

.btx-chat-layer.is-open {
    pointer-events: auto;
}

.btx-chat-backdrop {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    padding: 0;
    border: 0;
    background: rgba(10, 10, 9, 0.48);
    opacity: 0;
    cursor: default;
    transition: opacity 0.28s ease;
}

.btx-chat-layer.is-open .btx-chat-backdrop {
    opacity: 1;
}

.btx-chat-panel {
    position: absolute;
    right: 24px;
    bottom: 24px;
    width: min(420px, calc(100vw - 48px));
    height: min(720px, calc(100vh - 48px));
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid rgba(255, 252, 248, 0.13);
    border-radius: 8px;
    background:
        linear-gradient(145deg, rgba(233, 93, 33, 0.07), transparent 28%),
        linear-gradient(325deg, rgba(0, 140, 140, 0.08), transparent 30%),
        rgba(24, 24, 22, 0.98);
    box-shadow: 0 28px 90px rgba(0, 0, 0, 0.56);
    color: var(--text-warm-white);
    transform: translate3d(32px, 34px, 0) scale(0.84);
    transform-origin: calc(100% - 52px) calc(100% - 52px);
    filter: blur(7px);
    opacity: 0;
    will-change: transform, opacity, filter;
    transition:
        transform 0.38s cubic-bezier(0.16, 1, 0.3, 1),
        opacity 0.24s ease,
        filter 0.28s ease;
}

.btx-chat-layer.is-open .btx-chat-panel {
    transform: translate3d(0, 0, 0) scale(1);
    filter: blur(0);
    opacity: 1;
}

.btx-sheet-grabber {
    display: none;
}

.btx-chat-header {
    min-height: 76px;
    padding: 12px 14px;
    display: grid;
    grid-template-columns: 58px minmax(0, 1fr) 38px;
    gap: 10px;
    align-items: center;
    border-bottom: 1px solid rgba(255, 252, 248, 0.09);
    background: rgba(255, 252, 248, 0.025);
}

.btx-chat-avatar {
    width: 52px;
    height: 52px;
    display: grid;
    place-items: center;
    overflow: hidden;
    border-radius: 50%;
}

.btx-chat-avatar .btx-morph-canvas {
    display: block;
    width: 52px;
    height: 52px;
}

.btx-chat-identity {
    min-width: 0;
}

.btx-chat-identity strong {
    display: block;
    font-size: 15px;
    line-height: 1.3;
    letter-spacing: 0;
}

.btx-chat-identity span {
    display: block;
    margin-top: 3px;
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.5px;
    color: var(--green-light);
}

.btx-chat-close {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    padding: 0;
    border: 1px solid rgba(255, 252, 248, 0.11);
    border-radius: 6px;
    background: rgba(255, 252, 248, 0.03);
    color: var(--text-warm-grey);
    font-family: Arial, sans-serif;
    font-size: 23px;
    line-height: 1;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.btx-chat-close:hover,
.btx-chat-close:focus-visible {
    border-color: rgba(233, 93, 33, 0.55);
    background: rgba(233, 93, 33, 0.1);
    color: var(--text-warm-white);
}

.btx-chat-body {
    min-height: 0;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.btx-chat-messages {
    min-height: 0;
    flex: 1;
    padding: 18px 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-width: thin;
}

.btx-message {
    width: fit-content;
    max-width: 88%;
    padding: 11px 12px;
    border: 1px solid rgba(255, 252, 248, 0.09);
    border-radius: 8px;
    background: rgba(255, 252, 248, 0.045);
    color: var(--text-sand);
    font-size: 13px;
    line-height: 1.75;
    animation: btx-message-in 0.24s ease both;
}

.btx-message-user {
    align-self: flex-end;
    border-color: rgba(233, 93, 33, 0.3);
    background: rgba(233, 93, 33, 0.12);
    color: var(--text-warm-white);
}

.btx-message-label {
    display: block;
    margin-bottom: 4px;
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 1px;
    color: var(--orange-light);
}

.btx-message-user .btx-message-label {
    color: var(--text-warm-grey);
}

.btx-message p {
    margin: 0;
}

.btx-message-actions {
    margin-top: 9px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.btx-message-actions button {
    min-height: 30px;
    padding: 5px 8px;
    border: 1px solid rgba(0, 140, 140, 0.45);
    border-radius: 5px;
    background: rgba(0, 140, 140, 0.1);
    color: var(--green-light);
    font-family: var(--font-cn-body);
    font-size: 11px;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.btx-message-actions button:hover,
.btx-message-actions button:focus-visible {
    border-color: var(--green-light);
    background: rgba(0, 140, 140, 0.2);
    color: var(--text-warm-white);
}

.btx-message-typing {
    display: flex;
    gap: 4px;
    align-items: center;
    width: 54px;
    min-height: 38px;
}

.btx-message-typing span {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--text-warm-grey);
    animation: btx-typing 0.9s ease-in-out infinite;
}

.btx-message-typing span:nth-child(2) { animation-delay: 0.12s; }
.btx-message-typing span:nth-child(3) { animation-delay: 0.24s; }

.btx-quick-actions {
    padding: 10px 16px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    border-top: 1px solid rgba(255, 252, 248, 0.07);
}

.btx-quick-actions button {
    min-height: 38px;
    padding: 8px 9px;
    border: 1px solid rgba(255, 252, 248, 0.1);
    border-radius: 6px;
    background: rgba(255, 252, 248, 0.035);
    color: var(--text-sand);
    font-family: var(--font-cn-body);
    font-size: 12px;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.btx-quick-actions button:hover,
.btx-quick-actions button:focus-visible {
    border-color: rgba(233, 93, 33, 0.5);
    background: rgba(233, 93, 33, 0.1);
    color: var(--text-warm-white);
}

.btx-quick-actions button:active,
.btx-message-actions button:active,
.btx-chat-close:active,
.btx-chat-composer button:active {
    transform: scale(0.96);
    transition-duration: 90ms;
}

.btx-quick-actions [data-btx-intent="jarvis"] {
    border-color: rgba(0, 140, 140, 0.4);
    background: rgba(0, 140, 140, 0.08);
}

.btx-chat-composer {
    padding: 10px 16px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 42px;
    gap: 8px;
}

.btx-chat-composer input {
    width: 100%;
    height: 42px;
    padding: 0 12px;
    border: 1px solid rgba(255, 252, 248, 0.12);
    border-radius: 6px;
    outline: 0;
    background: rgba(0, 0, 0, 0.2);
    color: var(--text-warm-white);
    font-family: var(--font-cn-body);
    font-size: 13px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.btx-chat-composer input::placeholder {
    color: rgba(200, 191, 179, 0.5);
}

.btx-chat-composer input:focus {
    border-color: var(--green-main);
    box-shadow: 0 0 0 3px rgba(0, 140, 140, 0.1);
}

.btx-chat-composer button {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    padding: 0;
    border: 0;
    border-radius: 6px;
    background: var(--orange-main);
    color: var(--text-warm-white);
    font-family: var(--font-mono);
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
}

.btx-chat-composer button:hover,
.btx-chat-composer button:focus-visible {
    background: var(--orange-light);
    transform: translateY(-1px);
}

.btx-chat-note {
    margin: 0;
    padding: 0 16px 13px;
    color: rgba(200, 191, 179, 0.55);
    font-size: 10px;
    line-height: 1.55;
}

@keyframes btx-message-in {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes btx-typing {
    0%, 100% { opacity: 0.35; transform: translateY(0); }
    50% { opacity: 1; transform: translateY(-2px); }
}

/* Hamburger menu (mobile) */
.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: var(--z-hamburger);
}

.hamburger svg {
    width: 24px;
    height: 24px;
    stroke: var(--text-warm-grey);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
}

.mobile-menu {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(26,26,24,0.98);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    z-index: var(--z-mobile-menu);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
}

.mobile-menu.open {
    display: flex;
}

.mobile-menu a {
    font-family: var(--font-en-display);
    font-weight: 700;
    font-size: 28px;
    color: var(--text-warm-white);
    transition: color 0.3s;
}

.mobile-menu a:hover {
    color: var(--orange-main);
}

.mobile-menu-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-close svg {
    width: 28px;
    height: 28px;
    stroke: var(--text-warm-grey);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
}

.mobile-menu-social {
    display: flex;
    gap: 20px;
    margin-top: 16px;
}

.mobile-menu-social a svg {
    width: 22px;
    height: 22px;
    fill: var(--text-warm-grey);
    transition: fill 0.3s;
}

.mobile-menu-social a:hover svg {
    fill: var(--orange-main);
}

.mobile-lang-toggle {
    margin-top: 12px;
    padding: 10px 28px;
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: 1px;
    color: var(--text-warm-grey);
    background: transparent;
    border: 1px solid var(--border-dark);
    border-radius: 100px;
    cursor: pointer;
    transition: all 0.3s;
}

.mobile-lang-toggle:hover {
    color: var(--orange-main);
    border-color: var(--orange-main);
}

/* WeChat modal */
.wechat-modal {
    position: fixed;
    inset: 0;
    background: rgba(10,10,10,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: var(--z-wechat-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    visibility: hidden;
}

.wechat-modal.open {
    pointer-events: auto;
    visibility: visible;
}

.wechat-modal-content {
    background: var(--surface-dark);
    border: 1px solid var(--border-dark);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    max-width: 420px;
    position: relative;
}

.wechat-modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    cursor: pointer;
}

.wechat-modal-close svg {
    width: 20px;
    height: 20px;
    stroke: var(--text-warm-grey);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
}

.wechat-modal-title {
    font-family: var(--font-en-display);
    font-weight: 700;
    font-size: 18px;
    margin-bottom: 8px;
}

.wechat-modal-id {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--orange-main);
    margin-bottom: 24px;
}

.wechat-modal-qr {
    width: min(280px, 78vw);
    height: auto;
    background: none;
    border-radius: 12px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.wechat-modal-hint {
    font-size: 13px;
    color: var(--text-warm-grey);
}

/* Hero parallax text effect */
.hero-title {
    will-change: transform, opacity;
}

/* ========== PREMIUM INTERACTIONS ========== */

/* 1. Magnetic buttons — subtle pull toward cursor */
.cta-button, .newsletter-btn, .footer-icon-link, .collab-card {
    will-change: transform;
}

/* 2. Card spotlight glow — cursor-following gradient */
.collab-card > * {
    position: relative;
    z-index: 1;
}

/* 3. Hero text split animation */
.hero-title .word {
    display: inline-block;
    white-space: nowrap;
}

.hero-title .char {
    display: inline-block;
    opacity: 0;
    transform: translateY(60px) rotateX(-40deg);
    animation: charReveal 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes charReveal {
    to {
        opacity: 1;
        transform: translateY(0) rotateX(0deg);
    }
}

/* 4. Topic video 3D tilt — 已移除（交互减法） */

/* 5. WeChat modal entrance animation */
.wechat-modal {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.wechat-modal.open {
    opacity: 1;
}

.wechat-modal-content {
    transform: scale(0.85) translateY(20px);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s;
    opacity: 0;
}

.wechat-modal.open .wechat-modal-content {
    transform: scale(1) translateY(0);
    opacity: 1;
}

/* Cooperation inquiry modal */
body.inquiry-modal-open {
    overflow: hidden;
}

.inquiry-modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-wechat-modal);
    padding: 32px;
    display: grid;
    place-items: center;
    overflow-y: auto;
    background: rgba(8, 8, 7, 0.82);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.28s ease, visibility 0.28s ease;
}

.inquiry-modal.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.inquiry-dialog {
    position: relative;
    width: min(980px, 100%);
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    border: 1px solid rgba(255, 252, 248, 0.14);
    border-radius: 8px;
    background:
        linear-gradient(90deg, var(--orange-main), var(--green-main)) top left / 100% 3px no-repeat,
        radial-gradient(circle at 86% 2%, rgba(0, 140, 140, 0.13), transparent 28%),
        radial-gradient(circle at 8% 10%, rgba(233, 93, 33, 0.12), transparent 26%),
        #191917;
    box-shadow: 0 32px 100px rgba(0, 0, 0, 0.56);
    transform: translateY(22px) scale(0.985);
    transition: transform 0.38s cubic-bezier(0.16, 1, 0.3, 1);
    scrollbar-width: thin;
    scrollbar-color: var(--orange-main) transparent;
    color-scheme: dark;
}

.inquiry-modal.open .inquiry-dialog {
    transform: translateY(0) scale(1);
}

.inquiry-modal-close {
    position: absolute;
    top: 22px;
    right: 22px;
    z-index: 2;
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(255, 252, 248, 0.12);
    border-radius: 50%;
    color: var(--text-sand);
    background: rgba(255, 252, 248, 0.04);
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.inquiry-modal-close:hover {
    color: var(--text-warm-white);
    border-color: rgba(255, 252, 248, 0.34);
    transform: rotate(5deg);
}

.inquiry-modal-close svg {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
}

.inquiry-dialog-head {
    padding: 52px 64px 36px;
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(260px, 0.7fr);
    align-items: end;
    gap: 48px;
    border-bottom: 1px solid rgba(255, 252, 248, 0.08);
}

.inquiry-eyebrow {
    display: block;
    margin-bottom: 14px;
    color: var(--orange-light);
    font-family: var(--font-mono);
    font-size: 10px;
    font-style: normal;
    letter-spacing: 1.4px;
}

.inquiry-dialog-head h2 {
    margin: 0;
    color: var(--text-warm-white);
    font-family: var(--font-cn-body);
    font-size: clamp(32px, 4vw, 52px);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: 0;
}

.inquiry-dialog-head > p {
    margin: 0;
    color: var(--text-warm-grey);
    font-size: 13px;
    line-height: 1.85;
}

.inquiry-form {
    padding: 34px 64px 48px;
}

.inquiry-type-fieldset {
    min-width: 0;
    margin: 0 0 32px;
    padding: 0;
    border: 0;
}

.inquiry-type-fieldset legend {
    margin-bottom: 13px;
    color: var(--text-sand);
    font-size: 12px;
    font-weight: 700;
}

.inquiry-type-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
}

.inquiry-type-option {
    position: relative;
    min-height: 118px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(255, 252, 248, 0.1);
    border-radius: 6px;
    background: rgba(255, 252, 248, 0.025);
    cursor: pointer;
    transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.inquiry-type-option:hover {
    border-color: rgba(255, 252, 248, 0.24);
    transform: translateY(-2px);
}

.inquiry-type-option:has(input:checked) {
    border-color: rgba(233, 93, 33, 0.78);
    background: linear-gradient(145deg, rgba(233, 93, 33, 0.14), rgba(0, 140, 140, 0.07));
    box-shadow: inset 0 0 0 1px rgba(233, 93, 33, 0.12);
}

.inquiry-type-option input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
}

.inquiry-type-option:has(input:focus-visible) {
    outline: 2px solid var(--green-light);
    outline-offset: 2px;
}

.inquiry-type-index {
    margin-bottom: auto;
    color: rgba(255, 255, 255, 0.26);
    font-family: var(--font-mono);
    font-size: 10px;
}

.inquiry-type-option strong {
    color: var(--text-warm-white);
    font-size: 14px;
    line-height: 1.4;
}

.inquiry-type-option em {
    margin-top: 5px;
    color: var(--text-warm-grey);
    font-size: 11px;
    font-style: normal;
    line-height: 1.45;
}

.inquiry-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 16px;
}

.inquiry-field {
    min-width: 0;
    display: grid;
    gap: 8px;
}

.inquiry-field-wide {
    grid-column: 1 / -1;
}

.inquiry-field > span {
    color: var(--text-sand);
    font-size: 12px;
    font-weight: 700;
}

.inquiry-field > span b {
    color: var(--orange-light);
    font-weight: 700;
}

.inquiry-field input,
.inquiry-field select,
.inquiry-field textarea {
    width: 100%;
    border: 1px solid rgba(255, 252, 248, 0.12);
    border-radius: 6px;
    outline: 0;
    color: var(--text-warm-white);
    background: rgba(255, 252, 248, 0.035);
    font: inherit;
    font-size: 14px;
    transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.inquiry-field input,
.inquiry-field select {
    height: 48px;
    padding: 0 14px;
}

.inquiry-field textarea {
    min-height: 116px;
    padding: 13px 14px;
    line-height: 1.7;
    resize: vertical;
}

.inquiry-field select {
    color-scheme: dark;
    color: var(--text-warm-white);
    background-color: #20201e;
}

.inquiry-field select option {
    color: #f7f4ef;
    background-color: #181816;
}

.inquiry-field select option:disabled {
    color: #817b72;
}

.inquiry-field input::placeholder,
.inquiry-field textarea::placeholder {
    color: rgba(200, 191, 179, 0.42);
}

.inquiry-field input:focus,
.inquiry-field select:focus,
.inquiry-field textarea:focus {
    border-color: var(--green-main);
    background: rgba(0, 140, 140, 0.055);
    box-shadow: 0 0 0 3px rgba(0, 140, 140, 0.1);
}

.inquiry-honeypot {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.inquiry-form-footer {
    margin-top: 28px;
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    border-top: 1px solid rgba(255, 252, 248, 0.08);
}

.inquiry-form-footer p {
    max-width: 430px;
    margin: 0;
    color: var(--text-warm-grey);
    font-size: 11px;
    line-height: 1.7;
}

.inquiry-submit {
    min-width: 156px;
    min-height: 48px;
    padding: 0 20px;
    border: 0;
    border-radius: 6px;
    color: var(--text-warm-white);
    background: var(--orange-main);
    font-family: var(--font-cn-body);
    font-size: 14px;
    font-weight: 800;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
}

.inquiry-submit:hover {
    background: var(--orange-deep);
    transform: translateY(-2px);
}

.inquiry-submit:disabled {
    opacity: 0.58;
    cursor: wait;
    transform: none;
}

.inquiry-submit span {
    margin-left: 8px;
}

.inquiry-status {
    min-height: 22px;
    margin: 12px 0 -22px;
    color: var(--green-light);
    font-size: 12px;
}

.inquiry-status.is-error {
    color: var(--orange-light);
}

.inquiry-success {
    min-height: 470px;
    padding: 84px 92px;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 32px;
}

.inquiry-success[hidden] {
    display: none;
}

.inquiry-success-mark {
    width: 78px;
    height: 78px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(0, 140, 140, 0.48);
    border-radius: 50%;
    color: var(--green-light);
    background: rgba(0, 140, 140, 0.09);
    font-family: var(--font-en-display);
    font-size: 30px;
}

.inquiry-success h3 {
    margin: 0 0 12px;
    color: var(--text-warm-white);
    font-size: 38px;
    line-height: 1.2;
}

.inquiry-success p {
    max-width: 520px;
    margin: 0 0 28px;
    color: var(--text-warm-grey);
    font-size: 14px;
    line-height: 1.8;
}

.inquiry-success button {
    padding: 0;
    border: 0;
    border-bottom: 1px solid rgba(255, 252, 248, 0.28);
    color: var(--text-sand);
    background: transparent;
    font-family: var(--font-cn-body);
    font-size: 12px;
    cursor: pointer;
}

@media (max-width: 760px) {
    .inquiry-modal {
        padding: 0;
        place-items: end center;
    }
    .inquiry-dialog {
        width: 100%;
        max-height: 94vh;
        border-right: 0;
        border-bottom: 0;
        border-left: 0;
        border-radius: 8px 8px 0 0;
        transform: translateY(40px);
    }
    .inquiry-modal-close {
        top: 16px;
        right: 16px;
    }
    .inquiry-dialog-head {
        padding: 38px 22px 24px;
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .inquiry-dialog-head h2 {
        padding-right: 46px;
        font-size: 32px;
    }
    .inquiry-dialog-head > p {
        max-width: 520px;
    }
    .inquiry-form {
        padding: 24px 22px 34px;
    }
    .inquiry-type-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .inquiry-type-option {
        min-height: 108px;
        padding: 13px;
    }
    .inquiry-form-grid {
        grid-template-columns: 1fr;
    }
    .inquiry-field-wide {
        grid-column: auto;
    }
    .inquiry-form-footer {
        align-items: stretch;
        flex-direction: column;
        gap: 16px;
    }
    .inquiry-submit {
        width: 100%;
    }
    .inquiry-success {
        min-height: 72vh;
        padding: 70px 28px;
        grid-template-columns: 1fr;
        align-content: center;
        gap: 24px;
    }
    .inquiry-success h3 {
        font-size: 30px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .inquiry-modal,
    .inquiry-dialog,
    .inquiry-type-option,
    .inquiry-submit {
        transition: none;
    }
}

/* 6. Nav active indicator */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--orange-main);
    transition: width 0.3s, left 0.3s;
    border-radius: 1px;
}

.nav-link.active {
    color: var(--text-warm-white);
}

.nav-link.active::after {
    width: 100%;
    left: 0;
}

/* 7. Premium link hover — gradient sweep underline */
.social-icon-link {
    position: relative;
    overflow: hidden;
}

.social-icon-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--grad-orange-green);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.social-icon-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* 8. Stats number glow on reveal */
.stat-number {
    transition: text-shadow 0.6s;
}

.stats-bar.counting .stat-number {
    text-shadow: 0 0 40px rgba(233,93,33,0.3), 0 0 80px rgba(0,140,140,0.15);
}

/* 9. Scroll reveal variants */
.reveal-left {
    opacity: 0;
    transform: translateX(-60px);
    transition: opacity 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-scale.visible {
    opacity: 1;
    transform: scale(1);
}

/* 10. Section divider pulse on scroll-in */
.section-divider {
    transition: opacity 0.6s, height 0.6s;
    opacity: 0.4;
    height: 1px;
}

.section-divider.visible {
    opacity: 1;
    height: 2px;
    animation: dividerGlow 1.8s ease forwards;
}

@keyframes dividerGlow {
    0% { background: linear-gradient(90deg, transparent, var(--border-dark), rgba(233,93,33,0.3), var(--border-dark), transparent); filter: none; }
    40% { background: linear-gradient(90deg, transparent, rgba(233,93,33,0.4), rgba(0,140,140,0.5), rgba(233,93,33,0.4), transparent); filter: drop-shadow(0 0 6px rgba(233,93,33,0.4)); }
    100% { background: linear-gradient(90deg, transparent, var(--border-dark), rgba(233,93,33,0.3), var(--border-dark), transparent); filter: none; }
}

/* 11. Timeline dot pulse animation */
.timeline-dot {
    transition: all 0.5s;
}

.timeline-item.visible .timeline-dot {
    animation: dotPulse 2s ease-in-out;
}

@keyframes dotPulse {
    0% { box-shadow: 0 0 0 0 rgba(233,93,33,0.6); }
    70% { box-shadow: 0 0 0 12px rgba(233,93,33,0); }
    100% { box-shadow: 0 0 12px rgba(233,93,33,0.4); }
}

/* 12. Collab card stagger on reveal */
.collab-grid .collab-card:nth-child(1) { transition-delay: 0s; }
.collab-grid .collab-card:nth-child(2) { transition-delay: 0.12s; }
.collab-grid .collab-card:nth-child(3) { transition-delay: 0.24s; }

/* 13. Footer icon ripple hover */
.footer-icon-link {
    position: relative;
    overflow: hidden;
}

.footer-icon-link::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(233,93,33,0.15), transparent 70%);
    transform: scale(0);
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.footer-icon-link:hover::after {
    transform: scale(2.5);
}

.footer-icon-link svg {
    position: relative;
    z-index: 1;
}

/* ========== BRAND STORY (extracted from inline styles) ========== */
.section-brand-story {
    max-width: 700px;
    padding: 96px 48px;
}

.brand-story-divider {
    width: 48px;
    height: 2px;
    background: var(--grad-orange-green);
    margin: 0 auto 40px;
    border-radius: 1px;
}

.brand-story-text {
    font-size: 26px;
    line-height: 2.2;
}

/* ========== PROJECTS ========== */
.section-projects {
    max-width: 1100px;
    margin: 0 auto;
    padding: 144px 48px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 48px;
}

.project-section-desc {
    max-width: 520px;
    margin-top: 16px;
    color: var(--text-warm-grey);
    font-size: 15px;
    line-height: 1.8;
}

.project-card {
    background: var(--surface-card);
    border: 1px solid var(--border-dark);
    border-radius: 16px;
    min-height: 260px;
    padding: 0;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    overflow: hidden;
    position: relative;
    isolation: isolate;
    cursor: pointer;
}

.project-card-featured {
    grid-column: 1 / -1;
    min-height: 340px;
}

.project-card-featured .project-card-content {
    min-height: 340px;
    max-width: 640px;
}

.project-card-featured .project-name {
    font-size: 28px;
}

.project-card-featured .project-desc {
    max-width: 560px;
    font-size: 15px;
}

.project-card-wide {
    grid-column: 1 / -1;
    min-height: 300px;
}

.project-card-wide .project-card-content {
    min-height: 300px;
    max-width: 620px;
}

.project-card-wide .project-name {
    font-size: 24px;
}

.project-card-wide .project-desc {
    max-width: 560px;
}

.project-card-consulting {
    background:
        linear-gradient(135deg, rgba(26, 26, 24, 0.96), rgba(43, 40, 34, 0.94)),
        radial-gradient(circle at 78% 22%, rgba(233, 93, 33, 0.24), transparent 34%),
        radial-gradient(circle at 18% 80%, rgba(0, 140, 140, 0.18), transparent 30%);
}

.project-card-consulting .project-card-content {
    max-width: 680px;
}

.project-card::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    background:
        linear-gradient(180deg, rgba(26, 26, 24, 0.06) 0%, rgba(26, 26, 24, 0.48) 48%, rgba(26, 26, 24, 0.88) 100%),
        radial-gradient(circle at 18% 18%, rgba(255, 143, 76, 0.18), transparent 34%);
}

.project-card-sucaitong::before {
    background:
        linear-gradient(90deg, rgba(26, 26, 24, 0.9) 0%, rgba(26, 26, 24, 0.66) 38%, rgba(26, 26, 24, 0.2) 66%, rgba(26, 26, 24, 0.03) 100%),
        radial-gradient(circle at 18% 18%, rgba(255, 143, 76, 0.14), transparent 34%);
}

.project-card-sucaitong .project-visual {
    object-position: 76% center;
}

.project-card::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 2;
    border: 1px solid rgba(255, 252, 248, 0.06);
    border-radius: inherit;
    pointer-events: none;
}

.project-card:not(a) {
    cursor: default;
}

.project-card:hover {
    border-color: var(--orange-main);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(233, 93, 33, 0.08);
}

.project-card:hover .project-visual {
    opacity: 0.98;
    transform: scale(1.045);
}

.project-visual {
    position: absolute;
    inset: 0;
    z-index: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.9;
    transform: scale(1.01);
    transition: transform 0.45s ease, opacity 0.45s ease;
}

.project-card-content {
    position: relative;
    z-index: 3;
    min-height: 260px;
    padding: 30px 28px 28px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 12px;
}

.project-icon {
    width: fit-content;
    color: var(--text-warm-white);
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.45));
    transition: color 0.3s;
}

.project-icon svg {
    display: block;
    width: 30px;
    height: 30px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.project-card:hover .project-icon {
    color: var(--orange-light);
}

.project-name {
    font-family: 'Syne', 'Noto Sans SC', sans-serif;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-warm-white);
    letter-spacing: 0.02em;
}

.project-desc {
    font-size: 14px;
    color: rgba(255, 252, 248, 0.82);
    line-height: 1.7;
    max-width: 94%;
    text-shadow: 0 1px 12px rgba(0, 0, 0, 0.5);
}

.project-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--orange-main);
    background: rgba(233, 93, 33, 0.18);
    backdrop-filter: blur(10px);
    padding: 4px 10px;
    border-radius: 6px;
}

.project-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.project-status,
.project-action {
    display: inline-flex;
    align-items: center;
    min-height: 25px;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    backdrop-filter: blur(10px);
}

.status-live {
    color: var(--green-light);
    background: rgba(0, 140, 140, 0.18);
}

.status-beta {
    color: var(--orange-light);
    background: rgba(233, 93, 33, 0.18);
}

/* 策划中的卡片视觉弱化，把注意力留给已上线产品 */
.project-card:has(.status-planned) {
    opacity: 0.62;
    transition: opacity 0.3s ease, transform 0.4s ease, border-color 0.3s ease, box-shadow 0.4s ease;
}

.project-card:has(.status-planned):hover {
    opacity: 1;
}

/* 移动端项目卡折叠：默认前 4 张 + 展开按钮 */
.projects-toggle {
    display: none;
    margin: 24px auto 0;
    padding: 12px 28px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 1px;
    color: var(--text-sand);
    background: transparent;
    border: 1px solid var(--border-dark);
    border-radius: 100px;
    cursor: pointer;
    transition: border-color 0.3s, color 0.3s;
}

.projects-toggle:hover {
    border-color: var(--orange-main);
    color: var(--text-warm-white);
}

@media (max-width: 768px) {
    .projects-grid:not(.expanded) .project-card:nth-child(n+5) {
        display: none;
    }
    .projects-grid.expanded + .projects-toggle {
        display: none;
    }
    .projects-toggle {
        display: block;
    }
}

.status-planned {
    color: var(--text-sand);
    background: rgba(255, 252, 248, 0.1);
}

.project-action {
    color: var(--text-warm-white);
    background: rgba(255, 252, 248, 0.1);
}

.project-cta {
    margin-top: 22px;
    border: 1px solid rgba(255, 252, 248, 0.08);
    border-radius: 16px;
    padding: 24px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    background:
        linear-gradient(135deg, rgba(233, 93, 33, 0.13), rgba(0, 140, 140, 0.1)),
        rgba(255, 252, 248, 0.035);
}

.project-cta-title {
    font-family: 'Syne', 'Noto Sans SC', sans-serif;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-warm-white);
}

.project-cta-desc {
    max-width: 640px;
    margin-top: 8px;
    color: var(--text-sand);
    font-size: 14px;
    line-height: 1.7;
}

.project-cta-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.project-cta-btn {
    min-width: 116px;
    min-height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 0 16px;
    background: var(--orange-main);
    color: var(--text-warm-white);
    text-decoration: none;
    font-size: 13px;
    font-weight: 700;
    font-family: var(--font-cn-body);
    border: 0;
    cursor: pointer;
    transition: transform 0.25s ease, background 0.25s ease;
}

.project-cta-btn:hover {
    transform: translateY(-2px);
    background: var(--orange-light);
}

.project-cta-btn-outline {
    background: rgba(255, 252, 248, 0.08);
    border: 1px solid rgba(255, 252, 248, 0.14);
}

/* Search FAQ */
.section-search-faq {
    max-width: 1100px;
    margin: 0 auto;
    padding: 96px 48px;
}

.search-faq-intro {
    max-width: 560px;
    margin-top: 16px;
    color: var(--text-warm-grey);
    font-size: 15px;
    line-height: 1.8;
}

.search-identity-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-top: 20px;
    color: var(--teal-bright);
    font-family: var(--font-cn-body);
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: color 0.25s ease, transform 0.25s ease;
}

.search-identity-link:hover {
    color: var(--text-warm-white);
    transform: translateX(4px);
}

.search-faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 48px;
}

.search-faq-card {
    min-height: 190px;
    padding: 32px;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.015));
    border: 1px solid var(--border-dark);
    border-radius: 8px;
}

.search-faq-card h3 {
    margin-bottom: 14px;
    color: var(--text-warm-white);
    font-size: 20px;
    font-weight: 800;
    line-height: 1.4;
}

.search-faq-card p {
    color: var(--text-sand);
    font-size: 15px;
    line-height: 1.9;
}

@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .section-projects {
        padding: 60px 20px;
    }
    .project-section-desc {
        font-size: 13px;
    }
    .project-card,
    .project-card-content {
        min-height: 240px;
    }
    .project-card-featured,
    .project-card-wide,
    .project-card-wide .project-card-content,
    .project-card-featured .project-card-content {
        min-height: 280px;
    }
    .project-card-featured .project-name {
        font-size: 24px;
    }
    .project-card-sucaitong .project-visual {
        object-position: 84% center;
    }
    .project-card-sucaitong .project-card-content {
        max-width: 42%;
    }
    .project-card-sucaitong .project-name {
        font-size: 26px;
        line-height: 1.16;
    }
    .project-card-sucaitong .project-desc {
        display: none;
    }
    .project-card-sucaitong .project-meta {
        gap: 6px;
    }
    .project-card-sucaitong .project-status,
    .project-card-sucaitong .project-tag {
        font-size: 10px;
        letter-spacing: 0.04em;
    }
    .project-card-content {
        padding: 28px 24px 24px;
    }
    .hardware-products {
        margin-top: 48px;
        padding-top: 40px;
    }
    .hardware-products-head {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    .hardware-products h3 {
        font-size: 25px;
    }
    .hardware-products-head > p {
        max-width: 100%;
    }
    .project-cta {
        padding: 22px 20px;
        flex-direction: column;
        align-items: flex-start;
    }
    .project-cta-actions {
        width: 100%;
        justify-content: flex-start;
    }
    .section-search-faq {
        padding: 60px 20px;
    }
    .search-faq-intro {
        font-size: 13px;
    }
    .search-identity-link {
        margin-top: 16px;
        font-size: 13px;
    }
    .search-faq-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-top: 32px;
    }
    .search-faq-card {
        min-height: auto;
        padding: 24px;
    }
    .search-faq-card h3 {
        font-size: 18px;
    }
    .search-faq-card p {
        font-size: 14px;
    }
}

@media (max-width: 960px) {
    .commercial-hub {
        padding: 104px 32px 96px;
    }
    .commercial-hub-head {
        grid-template-columns: 1fr;
        gap: 24px;
        margin-bottom: 56px;
    }
    .commercial-hub-head > p {
        max-width: 680px;
        margin: 0;
    }
    .commercial-paths {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .commercial-path,
    .commercial-path-member {
        min-height: 0;
        transform: none;
    }
    .commercial-path:hover,
    .commercial-path-member:hover {
        transform: translateY(-4px);
    }
    .commercial-path-index {
        margin-bottom: 30px;
    }
    .commercial-path > p {
        min-height: 0;
    }
    .member-checkout {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 900px) {
    .paid-subscribe {
        grid-template-columns: 1fr;
        gap: 32px;
        padding: 80px 32px 72px;
    }
    .paid-subscribe-bg {
        inset: 32px 16px;
    }
    .paid-subscribe-desc {
        max-width: 680px;
    }
}

@media (max-width: 600px) {
    .commercial-hub {
        padding: 80px 20px 72px;
        scroll-margin-top: 72px;
    }
    .commercial-hub-head {
        margin-bottom: 42px;
    }
    .commercial-hub-head .section-label {
        margin-bottom: 22px;
    }
    .commercial-hub-head .section-title {
        font-size: 30px;
        line-height: 1.12;
    }
    .commercial-hub-head > p {
        font-size: 14px;
    }
    .commercial-path {
        padding: 26px 22px 24px;
    }
    .commercial-path-index {
        margin-bottom: 24px;
        font-size: 42px;
    }
    .commercial-path h3 {
        font-size: 22px;
    }
    .commercial-path-actions {
        align-items: flex-start;
        flex-direction: column;
    }
    .commercial-link-green {
        width: 100%;
    }
    .skill-letter-delivery {
        margin-top: 4px;
    }
    .skill-letter-delivery span {
        padding-inline: 4px;
    }
    .skill-letter-delivery strong {
        font-size: 11px;
    }
    .skill-sample-modal {
        align-items: end;
        padding: 0;
    }
    .skill-sample-panel {
        width: 100%;
        max-height: 92dvh;
        border-right: 0;
        border-bottom: 0;
        border-left: 0;
        border-radius: 16px 16px 0 0;
    }
    .skill-sample-head {
        min-height: 66px;
        padding: 10px 12px 10px 18px;
    }
    .skill-sample-body {
        padding: 26px 20px 30px;
    }
    .skill-sample-body > h2 {
        font-size: 28px;
    }
    .skill-sample-footer {
        min-height: 86px;
        padding: 12px 14px calc(12px + env(safe-area-inset-bottom));
    }
    .skill-sample-footer > span {
        display: none;
    }
    .skill-sample-footer button {
        width: 100%;
    }
    .member-checkout {
        margin-top: 30px;
        padding-top: 32px;
    }
    .member-checkout-copy {
        padding-right: 48px;
    }
    .member-checkout-copy h3 {
        font-size: 26px;
    }
    .member-checkout-benefits li {
        grid-template-columns: 1fr;
        gap: 2px;
    }
    .paid-subscribe {
        padding: 64px 20px 56px;
    }
    .paid-subscribe#member-subscribe { scroll-margin-top: 96px; }
    .paid-subscribe-bg {
        inset: 24px 8px;
        border-radius: 20px;
    }
    .paid-subscribe-title {
        font-size: 34px;
        letter-spacing: -1.5px;
    }
    .paid-subscribe-desc {
        font-size: 14px;
    }
    .paid-subscribe-card {
        padding: 20px;
        border-radius: 18px;
    }
    .paid-subscribe-card-head {
        flex-direction: column;
        gap: 4px;
    }
    .subscribe-email-row {
        flex-direction: column;
    }
    .subscribe-email-input,
    .subscribe-submit {
        width: 100%;
    }
}


.brand-promo-video {
    margin-top: 48px;
    width: 100%;
    max-width: 620px;
    margin-left: auto;
    margin-right: auto;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 12px 48px rgba(233, 93, 33, 0.18), 0 0 80px rgba(0, 140, 140, 0.08);
}

.brand-promo-video video {
    width: 100%;
    display: block;
    border-radius: 16px;
}

/* ========== WECHAT LINK (extracted from inline styles) ========== */
.connect-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.connect-btn {
    margin-top: 0;
    margin-bottom: 0;
}

button.connect-btn {
    cursor: pointer;
}

.connect-btn-outline {
    background: transparent;
    border: 1px solid var(--border-dark);
    color: var(--text-sand);
}

.connect-btn-outline:hover {
    background: rgba(255,255,255,0.05);
    border-color: var(--text-warm-grey);
    color: var(--text-warm-white);
}

.public-account-card {
    width: min(420px, 88vw);
    margin: 36px auto 0;
    padding: 18px;
    display: flex;
    align-items: center;
    gap: 18px;
    border: 1px solid rgba(255, 252, 248, 0.08);
    border-radius: 18px;
    background: rgba(255, 252, 248, 0.035);
}

.public-account-copy {
    flex: 1;
    min-width: 0;
    text-align: left;
}

.public-account-copy span {
    display: block;
    margin-bottom: 6px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    color: var(--orange-main);
    text-transform: uppercase;
}

.public-account-copy strong {
    display: block;
    margin-bottom: 8px;
    color: var(--text-warm-white);
    font-size: 20px;
}

.public-account-copy p {
    margin: 0;
    color: var(--text-warm-grey);
    font-size: 13px;
    line-height: 1.7;
}

.public-account-qr {
    display: block;
    flex: 0 0 auto;
    width: 118px;
    height: 118px;
    border-radius: 14px;
    background: #fff;
    object-fit: contain;
}

.wechat-qr-img {
    width: min(280px, 78vw);
    max-height: 70vh;
    object-fit: contain;
    border-radius: 12px;
}

/* ========== RESPONSIVE ========== */

/* --- Tablet (769px – 1024px) --- */
@media (max-width: 1024px) {
    .navbar { padding: 0 32px; }
    .nav-links { gap: 20px; }
    .nav-social { gap: 12px; margin-left: 12px; padding-left: 12px; }

    .section-about { padding: 120px 32px; }
    .section-featured { padding: 120px 32px; }
    .section-topics { padding: 120px 32px; }
    .section-podcast { padding: 96px 32px; }
    .section-latest { padding: 120px 32px; }
    .section-collab { padding: 120px 32px; }

    .latest-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .featured-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .collab-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .product-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }

    .topic-block { gap: 32px; }
    .topic-name { font-size: 28px; }
    .podcast-shell {
        grid-template-columns: 200px minmax(0, 1fr);
        gap: 32px;
    }
    .podcast-copy h2 { font-size: 46px; }
    .podcast-latest {
        grid-column: 2;
        padding: 24px 0 0;
        border-top: 1px solid rgba(233, 93, 33, 0.42);
        border-left: 0;
    }
    .podcast-latest:hover { transform: translateY(-2px); }

    .hero-title { font-size: 72px; }

    .newsletter { padding: 80px 32px; }
    .section-highlights { padding: 60px 32px 0; }
    .highlights-grid { grid-template-columns: repeat(2, 1fr); }
    .latest-grid-2x2 { grid-template-columns: repeat(2, 1fr); }
    .seen-in { padding: 88px 32px; }
    .seen-in-list {
        grid-template-columns: none;
        grid-auto-flow: column;
        grid-auto-columns: 168px;
        overflow-x: auto;
        overscroll-behavior-inline: contain;
        scroll-snap-type: x proximity;
        scrollbar-width: none;
        padding-bottom: 10px;
    }
    .seen-in-list::-webkit-scrollbar { display: none; }
    .seen-in-item { scroll-snap-align: start; }
}

@media (max-width: 900px) {
    .nav-links { display: none; }
    .hamburger { display: block; }
}

/* --- Mobile (≤ 768px) --- */
@media (max-width: 768px) {
    .navbar { padding: 0 20px; height: 64px; }
    .nav-links { display: none; }
    .nav-social { display: none; }
    .hamburger { display: block; }
    .back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; }
    .floating-subscribe {
        right: 12px;
        bottom: 68px;
        width: 112px;
        height: 112px;
    }
    .floating-subscribe-copy {
        display: none;
    }
    .floating-subscribe-mascot {
        width: 96px;
        height: 96px;
        top: 0;
        right: 0;
    }
    .floating-subscribe-mobile-cta {
        display: block;
        position: absolute;
        left: 23px;
        top: 80px;
        z-index: 3;
        padding: 5px 8px;
        border: 1px solid rgba(0, 140, 140, 0.48);
        border-radius: 6px;
        background: rgba(24, 24, 22, 0.88);
        color: var(--text-warm-white);
        font-family: var(--font-mono);
        font-size: 9px;
        font-weight: 700;
        line-height: 1.6;
        white-space: nowrap;
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
    }
    .floating-subscribe-cta {
        display: none;
    }
    .btx-chat-panel {
        --btx-sheet-y: 0px;
        left: 0;
        right: 0;
        top: auto;
        bottom: 0;
        width: 100%;
        height: min(86dvh, 760px);
        max-height: calc(100dvh - 48px);
        border: 1px solid rgba(255, 252, 248, 0.14);
        border-bottom: 0;
        border-radius: 18px 18px 0 0;
        transform: translate3d(0, var(--btx-sheet-y), 0);
        transform-origin: 50% 100%;
        filter: none;
        opacity: 1;
        transition: none;
    }
    .btx-chat-layer.is-open .btx-chat-panel {
        transform: translate3d(0, var(--btx-sheet-y), 0);
    }
    .btx-chat-backdrop {
        display: block;
        background: rgba(8, 8, 7, 0.62);
        backdrop-filter: blur(3px);
        -webkit-backdrop-filter: blur(3px);
    }
    .btx-sheet-grabber {
        position: relative;
        z-index: 2;
        width: 100%;
        height: 24px;
        display: grid;
        place-items: center;
        flex: 0 0 24px;
        cursor: grab;
        touch-action: none;
    }
    .btx-sheet-grabber span {
        width: 38px;
        height: 5px;
        border-radius: 999px;
        background: rgba(255, 252, 248, 0.28);
        transition: background 0.18s ease, transform 0.18s ease;
    }
    .btx-sheet-grabber:active span,
    .btx-chat-panel.is-dragging .btx-sheet-grabber span {
        background: rgba(255, 252, 248, 0.52);
        transform: scaleX(1.12);
    }
    .btx-chat-header {
        min-height: 64px;
        padding: 4px 14px 10px;
        grid-template-columns: 54px minmax(0, 1fr) 38px;
        cursor: grab;
        touch-action: none;
    }
    .btx-chat-avatar {
        width: 48px;
        height: 48px;
    }
    .btx-chat-avatar .btx-morph-canvas {
        width: 48px;
        height: 48px;
    }
    .btx-chat-messages {
        padding: 16px 14px;
    }
    .btx-message {
        max-width: 92%;
    }
    .btx-quick-actions {
        padding: 10px 14px;
    }
    .btx-chat-composer {
        padding: 10px 14px;
    }
    .btx-chat-note {
        padding: 0 14px calc(12px + env(safe-area-inset-bottom));
    }
    .logo-icon { width: 32px; height: 32px; }
    .logo-text { font-size: 14px; }
    .hero-title { font-size: 52px; }
    .hero-identity { margin-bottom: 14px; font-size: 10px; }
    .hero-subtitle { font-size: 16px; }
    .hero-subtitle-en { font-size: 12px; }
    /* 移动端：HUD 画布文字会压住副标题，直接隐藏 */
    .hero-canvas { display: none; }

    .section-about { padding: 80px 20px; }
    .portrait-ring { width: 116px; height: 116px; }
    .cursor-glow { display: none; }
    .lang-toggle { display: none; }
    .portrait-wrapper { margin-bottom: 28px; }
    .intro-video-wrapper { border-radius: 8px; }
    .stats-bar { gap: 28px; padding: 24px 0; margin-bottom: 40px; }
    .stat-number { font-size: 24px; }
    .stat-label { font-size: 9px; letter-spacing: 1px; }
    .about-text { font-size: 18px; line-height: 2; }
    .about-company-link {
        grid-template-columns: auto 1fr 18px;
        gap: 10px;
        padding-right: 92px;
        text-align: left;
    }
    .about-company-domain { display: none; }
    .about-platforms { flex-wrap: wrap; gap: 16px 24px; justify-content: center; }
    .social-icon-link { font-size: 11px; }
    .social-icon-link svg { width: 16px; height: 16px; }

    .section-featured { padding: 80px 20px; }
    .section-header { margin-bottom: 48px; }
    .section-title { font-size: 32px; }
    .section-label { font-size: 10px; margin-bottom: 32px; }
    .featured-grid { grid-template-columns: 1fr; gap: 20px; }

    .section-latest { padding: 80px 20px; }
    .latest-grid { grid-template-columns: 1fr; gap: 16px; }
    .latest-grid-2x2 { grid-template-columns: 1fr; }
    .section-topics { padding: 80px 20px; }
    .section-podcast { padding: 72px 20px; }
    .podcast-shell {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .podcast-cover-link {
        width: min(72vw, 260px);
    }
    .podcast-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 7px;
    }
    .podcast-copy h2 { font-size: 38px; }
    .podcast-copy > p { font-size: 15px; }
    .podcast-actions {
        flex-direction: column;
        align-items: flex-start;
    }
    .podcast-latest {
        grid-column: auto;
        padding: 24px 0 0;
        border-top: 1px solid rgba(233, 93, 33, 0.42);
        border-left: 0;
    }
    .podcast-latest strong { font-size: 17px; }
    .topic-list { gap: 48px; }
    .topic-block { grid-template-columns: 1fr; gap: 24px; }
    .topic-block:nth-child(even) .topic-video { order: 0; }
    .topic-name { font-size: 26px; }
    .topic-desc { font-size: 14px; }

    .section-highlights { padding: 48px 20px 0; }
    .highlights-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .highlight-item { border-radius: 8px; }
    .highlight-item:nth-child(1) { grid-column: span 1; grid-row: span 1; aspect-ratio: 3/2; }
    .highlight-item:nth-child(2) { grid-column: span 1; aspect-ratio: 3/2; }
    .highlight-caption { opacity: 1; transform: translateY(0); font-size: 10px; padding: 20px 10px 10px; }
    .seen-in { padding: 72px 20px; }
    .seen-in-heading { margin-bottom: 28px; }
    .seen-in-heading h2 { font-size: 28px; }
    .seen-in-list {
        grid-template-columns: none;
        grid-auto-flow: column;
        grid-auto-columns: 168px;
        gap: 8px;
    }
    .seen-in-item { min-height: 104px; padding: 14px 12px; gap: 9px; }
    .seen-in-item strong { font-size: 12px; }
    .seen-in-item svg { top: 13px; right: 11px; width: 14px; height: 14px; }
    .section-journey { padding: 80px 20px; }
    .timeline-title { font-size: 18px; }
    .section-knowledge { padding: 80px 20px; }
    .knowledge-grid { grid-template-columns: 1fr; gap: 16px; }
    .section-collab { padding: 80px 20px; }
    .collab-grid { grid-template-columns: 1fr; gap: 16px; }
    .product-grid { grid-template-columns: 1fr; gap: 16px; }
    .product-showcase { margin-top: 40px; }
    .newsletter { padding: 60px 20px; }
    .newsletter-title { font-size: 22px; }
    .newsletter-form { flex-direction: column; }
    .newsletter-input, .newsletter-btn { width: 100%; }
    .public-account-card {
        flex-direction: column;
        text-align: center;
    }
    .public-account-copy {
        text-align: center;
    }
    .public-account-qr {
        width: 150px;
        height: 150px;
    }
    .belief-cn { font-size: 17px; }
    .belief-en { font-size: 14px; }
    footer { padding: 64px 20px 48px; }
    .footer-brand { font-size: 16px; margin-bottom: 28px; }
    .footer-links { flex-wrap: wrap; gap: 16px; margin-bottom: 40px; }
    .footer-icon-link { width: 40px; height: 40px; }
    .footer-slogan { font-size: 17px; margin-bottom: 28px; }
}

@media (prefers-reduced-transparency: reduce) {
    .floating-subscribe-copy,
    .btx-chat-panel {
        background: #181816;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }
    .btx-chat-backdrop {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }
}

@media (prefers-contrast: more) {
    .floating-subscribe-copy,
    .btx-chat-panel,
    .btx-quick-actions button {
        border-color: rgba(255, 252, 248, 0.5);
    }
}

/* Local-only analytics event stream, created by analytics.js on localhost. */
.analytics-debug {
    position: fixed;
    left: 16px;
    bottom: 16px;
    z-index: 14950;
    display: grid;
    justify-items: start;
    gap: 8px;
    font-family: var(--font-mono);
}

.analytics-debug-toggle {
    min-width: 74px;
    height: 34px;
    padding: 0 9px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 9px;
    border: 1px solid rgba(0, 170, 160, 0.5);
    border-radius: 6px;
    background: rgba(18, 22, 20, 0.92);
    color: var(--green-light);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.28);
    cursor: pointer;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.analytics-debug-toggle span {
    font-size: 9px;
    letter-spacing: 1px;
}

.analytics-debug-toggle strong {
    min-width: 18px;
    color: var(--text-warm-white);
    font-size: 10px;
    text-align: right;
}

.analytics-debug-panel {
    width: min(340px, calc(100vw - 32px));
    max-height: 300px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    background: rgba(22, 22, 20, 0.97);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.42);
}

.analytics-debug-panel[hidden] {
    display: none;
}

.analytics-debug-panel header {
    padding: 11px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.analytics-debug-panel header span {
    color: var(--green-light);
    font-size: 8px;
    letter-spacing: 1px;
}

.analytics-debug-panel header small {
    color: var(--text-warm-grey);
    font-family: var(--font-cn-body);
    font-size: 9px;
}

.analytics-debug-panel ol {
    max-height: 248px;
    margin: 0;
    padding: 6px 0;
    overflow-y: auto;
    list-style: none;
}

.analytics-debug-panel li {
    padding: 6px 12px;
    display: grid;
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 8px;
    color: var(--text-sand);
    font-size: 9px;
    line-height: 1.45;
}

.analytics-debug-panel time {
    color: var(--text-warm-grey);
}

.analytics-debug-panel li span {
    overflow-wrap: anywhere;
}

@media (max-width: 600px) {
    .analytics-debug {
        left: 10px;
        bottom: 10px;
    }
    .analytics-debug-panel {
        width: calc(100vw - 20px);
    }
}

/* ====================================================================
   INTERACTION UPGRADE PACK
   Scrollspy nav · Lightbox · Card spotlight · Magnetic buttons ·
   Timeline draw · Back-to-top ring · Reduced motion
==================================================================== */

/* Anchor offset so fixed navbar doesn't cover section titles */
section[id] { scroll-margin-top: 72px; }

/* Skip layout/paint work for deep sections until they approach the viewport. */
body > section:not(#hero) {
    content-visibility: auto;
    contain-intrinsic-size: auto 900px;
}

/* --- Nav scrollspy --- */
.nav-link { position: relative; }

.nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, var(--orange-main), var(--green-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-link:hover::after { transform: scaleX(0.5); }

.nav-link.active { color: var(--text-warm-white); }
.nav-link.active::after { transform: scaleX(1); }

/* --- Highlights lightbox --- */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 12000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(12, 12, 10, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.lightbox.open {
    opacity: 1;
    pointer-events: auto;
}

.lightbox-figure {
    margin: 0;
    max-width: min(1100px, 88vw);
    text-align: center;
}

.lightbox-img {
    max-width: 100%;
    max-height: 78vh;
    border-radius: 12px;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
    transform: scale(0.96);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.22s ease;
}

.lightbox.open .lightbox-img { transform: scale(1); }

.lightbox-img.switching {
    opacity: 0;
    transform: scale(0.985);
}

.lightbox-caption {
    margin-top: 16px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 1px;
    color: rgba(255, 252, 248, 0.75);
}

.lightbox-counter {
    position: absolute;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 2px;
    color: rgba(255, 252, 248, 0.5);
}

.lightbox-btn {
    position: absolute;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 252, 248, 0.06);
    border: 1px solid rgba(255, 252, 248, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.3s, border-color 0.3s, transform 0.3s;
}

.lightbox-btn:hover {
    background: rgba(233, 93, 33, 0.18);
    border-color: var(--orange-main);
    transform: scale(1.08);
}

.lightbox-btn svg {
    width: 22px;
    height: 22px;
    stroke: var(--text-warm-white);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.lightbox-prev { left: 28px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 28px; top: 50%; transform: translateY(-50%); }
.lightbox-prev:hover { transform: translateY(-50%) scale(1.08); }
.lightbox-next:hover { transform: translateY(-50%) scale(1.08); }
.lightbox-close { top: 20px; right: 24px; }

@media (max-width: 768px) {
    .lightbox-btn { width: 40px; height: 40px; }
    .lightbox-prev { left: 10px; }
    .lightbox-next { right: 10px; }
    .lightbox-close { top: 14px; right: 14px; }
    .lightbox-img { max-height: 68vh; border-radius: 8px; }
}

/* --- Card spotlight (cursor-following glow) --- */
.collab-card, .knowledge-card, .latest-card, .search-faq-card { position: relative; }

.card-spotlight {
    position: absolute;
    inset: 0;
    z-index: 3;
    border-radius: inherit;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.4s ease;
    background: radial-gradient(
        420px circle at var(--mx, 50%) var(--my, 50%),
        rgba(255, 143, 76, 0.13),
        rgba(255, 143, 76, 0.04) 38%,
        transparent 62%
    );
}

.project-card:hover .card-spotlight,
.collab-card:hover .card-spotlight,
.knowledge-card:hover .card-spotlight,
.latest-card:hover .card-spotlight { opacity: 1; }

/* --- Magnetic buttons — 已移除（交互减法：按钮回归标准 hover） --- */

/* --- Timeline scroll draw --- */
.timeline.tl-animated::before {
    background: rgba(255, 252, 248, 0.08);
}

.tl-progress {
    position: absolute;
    left: 0;
    top: 0;
    width: 2px;
    height: 0;
    background: linear-gradient(to bottom, var(--orange-main), var(--green-main));
    border-radius: 1px;
    box-shadow: 0 0 6px rgba(233, 93, 33, 0.25);
}

.timeline.tl-animated .timeline-dot {
    background: #4a4742;
    box-shadow: none;
    transition: background 0.45s, box-shadow 0.45s, transform 0.45s;
}

.timeline.tl-animated .timeline-now:not(.lit) .timeline-dot { animation: none; }

.timeline.tl-animated .timeline-item.lit .timeline-dot {
    background: var(--orange-main);
    box-shadow: 0 0 8px rgba(233, 93, 33, 0.35);
    transform: scale(1.2);
}

.timeline.tl-animated .timeline-now.lit .timeline-dot {
    background: var(--green-main);
    box-shadow: 0 0 8px rgba(0, 140, 140, 0.35);
}

/* --- Back-to-top progress ring --- */
.btt-ring {
    position: absolute;
    inset: -1px;
    width: calc(100% + 2px);
    height: calc(100% + 2px);
    transform: rotate(-90deg);
    pointer-events: none;
}

.btt-ring circle {
    fill: none;
    stroke: var(--orange-main);
    stroke-width: 2;
    stroke-linecap: round;
    opacity: 0.9;
    transition: stroke-dashoffset 0.15s linear;
}

/* --- FAQ accordion (SEO 内容视觉降权) --- */
.search-faq-grid {
    grid-template-columns: 1fr;
    max-width: 760px;
    margin: 40px auto 0;
    gap: 12px;
}

.search-faq-card {
    min-height: 0;
    padding: 0;
    overflow: hidden;
}

.search-faq-card summary {
    list-style: none;
    cursor: pointer;
    padding: 18px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    transition: background 0.3s;
}

.search-faq-card summary::-webkit-details-marker { display: none; }

.search-faq-card summary:hover { background: rgba(255, 252, 248, 0.03); }

.search-faq-card summary h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-sand);
    line-height: 1.5;
    transition: color 0.3s;
}

.search-faq-card summary::after {
    content: '+';
    flex-shrink: 0;
    font-family: var(--font-mono);
    font-size: 18px;
    font-weight: 400;
    color: var(--text-warm-grey);
    transition: transform 0.3s, color 0.3s;
}

.search-faq-card[open] summary::after {
    transform: rotate(45deg);
    color: var(--orange-main);
}

.search-faq-card[open] summary h3 { color: var(--text-warm-white); }

.search-faq-card p {
    padding: 0 24px 20px;
    font-size: 14px;
    line-height: 1.9;
    color: var(--text-warm-grey);
}

/* --- Unified image grading（策展感统一调色） --- */
.highlight-item img {
    filter: brightness(0.85) saturate(0.82);
}

.highlight-item:hover img {
    filter: brightness(1) saturate(1);
}

.video-cover img,
.latest-cover-wrap img,
.product-card .product-video-cover img {
    filter: brightness(0.88) saturate(0.85);
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94), filter 0.4s ease;
}

.video-cover:hover img,
.latest-card:hover .latest-cover-wrap img,
.product-card:hover .product-video-cover img {
    filter: brightness(1) saturate(1);
}

/* --- Command palette trigger (navbar) --- */
.cmdk-trigger {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 9px;
    font-family: var(--font-mono);
    color: var(--text-warm-grey);
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-dark);
    border-radius: 100px;
    cursor: pointer;
    transition: color 0.3s, border-color 0.3s, background 0.3s;
}
.cmdk-trigger svg { width: 15px; height: 15px; }
.cmdk-kbd {
    font-size: 11px;
    line-height: 1;
    letter-spacing: 0.5px;
    padding: 3px 5px;
    border: 1px solid var(--border-dark);
    border-radius: 5px;
    color: inherit;
}
.cmdk-trigger:hover {
    color: var(--text-warm-white);
    border-color: var(--orange-main);
    background: rgba(233,93,33,0.06);
}
.cmdk-trigger:hover .cmdk-kbd { border-color: var(--orange-main); }
.cmdk-trigger:focus-visible { outline: 2px solid var(--orange-main); outline-offset: 3px; }
.projects-toggle:focus-visible { outline: 2px solid var(--orange-main); outline-offset: 3px; }
.cmd-palette-input:focus-visible { border-bottom-color: var(--orange-main); }

/* --- Command palette trigger (mobile menu) --- */
.mobile-cmdk {
    background: none;
    border: none;
    font: inherit;
    cursor: pointer;
    color: var(--orange-main);
}

/* --- Inline video player close button --- */
.video-close-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 3;
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    background: rgba(10,10,9,0.62);
    color: var(--text-warm-white);
    cursor: pointer;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: background 0.2s, transform 0.2s;
}
.video-close-btn:hover { background: var(--orange-main); transform: scale(1.08); }
.video-close-btn:focus-visible { outline: 2px solid var(--text-warm-white); outline-offset: 2px; }
.video-close-btn svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; }

/* --- Video cover focus ring (keyboard) --- */
[data-bvid]:focus-visible,
.latest-cover-wrap[data-video]:focus-visible,
.product-video-cover[data-video]:focus-visible {
    outline: 2px solid var(--orange-main);
    outline-offset: 3px;
}

/* --- Info-only project cards: no false click affordance --- */
.project-card.project-card-static { cursor: default; }
.project-card.project-card-static:hover {
    transform: none;
    border-color: var(--border-dark);
    box-shadow: none;
}
.project-card.project-card-static:hover .project-visual { transform: none; opacity: 1; }
.project-card.project-card-static:hover .project-icon { color: inherit; }
.project-card.project-card-static .card-spotlight { display: none; }

/* --- Linkless-but-interactive cards keep a clickable cursor + focus ring --- */
.project-card.open-wechat-link,
.project-card.open-miniapp-link { cursor: pointer; }
.project-card.open-wechat-link:focus-visible,
.project-card.open-miniapp-link:focus-visible {
    outline: 2px solid var(--orange-main);
    outline-offset: 3px;
}

/* --- Reduced motion: respect system preference --- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
    .reveal, .section-divider {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* === Mobile swipe carousels (latest news + highlights gallery) === */
.swipe-progress,
.swipe-hint {
    display: none;
}

.swipe-hint svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.6;
}

@media (max-width: 600px) {
    .latest-grid.swipe-carousel,
    .highlights-grid.swipe-carousel {
        display: flex;
        grid-template-columns: none;
        flex-wrap: nowrap;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        gap: 14px;
        margin-left: -20px;
        margin-right: -20px;
        padding: 4px 20px;
        scroll-padding-left: 20px;
        scrollbar-width: none;
    }
    .swipe-carousel::-webkit-scrollbar { display: none; }

    .latest-grid.swipe-carousel > .latest-card {
        flex: 0 0 80%;
        scroll-snap-align: center;
    }
    .highlights-grid.swipe-carousel > .highlight-item {
        flex: 0 0 74%;
        scroll-snap-align: center;
        grid-column: auto !important;
        grid-row: auto !important;
        aspect-ratio: 3 / 2 !important;
    }

    /* Swipe progress indicator */
    .swipe-progress {
        display: block;
        height: 3px;
        background: var(--border-dark);
        border-radius: 3px;
        margin: 16px 20px 0;
        overflow: hidden;
    }
    .swipe-progress-bar {
        height: 100%;
        width: 40%;
        background: var(--orange-main);
        border-radius: 3px;
        transform: translateX(0);
        will-change: transform;
    }
    .swipe-hint {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        margin-top: 10px;
        font-family: var(--font-mono);
        font-size: 10px;
        letter-spacing: 1.5px;
        color: var(--text-warm-grey);
        opacity: 0.7;
        transition: opacity 0.4s;
    }
    .swipe-hint.hidden { opacity: 0; }
    .swipe-hint .swipe-hand { animation: swipeNudge 1.8s ease-in-out infinite; }
}

@keyframes swipeNudge {
    0%, 100% { transform: translateX(-4px); }
    50% { transform: translateX(4px); }
}