/* ═══════════════════════════════════════════
   十三香小龙虾 — 官方宣传网站样式
   赛博朋克 × 中国美食文化融合
   ═══════════════════════════════════════════ */

/* ─── CSS Variables ─── */
:root {
  --c-bg: #080808;
  --c-bg-2: #0e0e12;
  --c-bg-3: #14141c;
  --c-surface: #1a1a24;
  --c-surface-2: #22222e;
  --c-border: rgba(255, 255, 255, 0.06);
  --c-border-hover: rgba(255, 255, 255, 0.12);
  --c-text: #e8e8f0;
  --c-text-dim: #8888a0;
  --c-text-dimmer: #55556a;
  --c-primary: #ff3333;
  --c-primary-glow: rgba(255, 51, 51, 0.4);
  --c-gold: #ffd700;
  --c-gold-dim: rgba(255, 215, 0, 0.3);
  --c-purple: #8b5cf6;
  --c-purple-glow: rgba(139, 92, 246, 0.3);
  --c-wechat: #07c160;
  --c-wechat-glow: rgba(7, 193, 96, 0.3);
  --c-cyan: #22d3ee;
  --font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --glow-spread: 0 0 40px;
}

/* ─── Light Theme ─── */
[data-theme="light"] {
  --c-bg: #faf8f5;
  --c-bg-2: #f0ece4;
  --c-bg-3: #e5e0d6;
  --c-surface: #ffffff;
  --c-surface-2: #f7f5f0;
  --c-border: rgba(0, 0, 0, 0.12);
  --c-border-hover: rgba(0, 0, 0, 0.20);
  --c-text: #1a1a2e;
  --c-text-dim: #4a4a5e;
  --c-text-dimmer: #777790;
  --c-primary: #cc2222;
  --c-primary-glow: rgba(204, 34, 34, 0.15);
  --c-gold-dim: rgba(180, 140, 0, 0.3);
}
[data-theme="light"] .hero-canvas { opacity: 0.2; }
[data-theme="light"] .nav.scrolled {
  background: rgba(250, 248, 245, 0.95);
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}
[data-theme="light"] .hero-title-cn {
  background: linear-gradient(135deg, #cc2222 0%, #1a1a2e 40%, var(--c-gold) 70%, #cc2222 100%);
  -webkit-background-clip: text; background-clip: text;
}
[data-theme="light"] .hero-overlay {
  background:
    radial-gradient(ellipse at 50% 0%, rgba(255, 215, 0, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(204, 34, 34, 0.04) 0%, transparent 50%);
}
[data-theme="light"] .loader { background: var(--c-bg); }

/* Light theme: card elevation */
[data-theme="light"] .feature-card,
[data-theme="light"] .persona-card,
[data-theme="light"] .testimonial-card,
[data-theme="light"] .community-card,
[data-theme="light"] .sponsor-card,
[data-theme="light"] .faq-item,
[data-theme="light"] .timeline-card {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  border-color: rgba(0, 0, 0, 0.10);
}
[data-theme="light"] .feature-card:hover,
[data-theme="light"] .persona-card:hover,
[data-theme="light"] .testimonial-card:hover,
[data-theme="light"] .community-card:hover,
[data-theme="light"] .timeline-item:hover .timeline-card {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.10);
}

/* Light theme: specific overrides */
[data-theme="light"] .desktop-screen { background: #f0f0f0; }
[data-theme="light"] .desktop-screen-header { background: rgba(0,0,0,0.05); }
[data-theme="light"] .comparison-table thead th { background: var(--c-bg-2); }
[data-theme="light"] .terminal { background: #1a1a24; border-color: rgba(0,0,0,0.15); }
[data-theme="light"] .terminal-header { background: #222230; }
[data-theme="light"] .timeline::before {
  background: linear-gradient(to bottom, var(--c-primary), var(--c-gold) 60%, rgba(0,0,0,0.12) 80%);
}
[data-theme="light"] .timeline-dot { background: var(--c-bg); }
[data-theme="light"] .timeline-done .timeline-dot { background: var(--c-primary); }
[data-theme="light"] .timeline-active .timeline-dot { background: var(--c-gold); }
[data-theme="light"] .scroll-progress {
  background: linear-gradient(90deg, var(--c-primary), var(--c-gold), var(--c-primary));
  background-size: 200% 100%;
}
[data-theme="light"] .persona-tag {
  background: linear-gradient(135deg, #cc2222, #b8860b);
}
[data-theme="light"] .qr-placeholder {
  border-color: rgba(0,0,0,0.15);
}

/* ═══════════════════════════════════════════
   COMPREHENSIVE LIGHT THEME OVERRIDES
   ═══════════════════════════════════════════ */

/* --- Global overrides --- */
[data-theme="light"] .hero {
  background: linear-gradient(180deg, #faf8f5 0%, #f0ece4 100%);
}
[data-theme="light"] .hero-slogan {
  color: #8b6914;
  text-shadow: none;
}
[data-theme="light"] .hero-badge {
  background: rgba(0,0,0,0.03);
  border-color: rgba(0,0,0,0.10);
  color: #4a4a5e;
}
[data-theme="light"] .section-title {
  color: #1a1a2e;
}
[data-theme="light"] .section-subtitle,
[data-theme="light"] .section-desc {
  color: #4a4a5e;
}
[data-theme="light"] .section-tag {
  color: #cc2222;
  border-color: rgba(204,34,34,0.2);
  background: rgba(204,34,34,0.05);
}

/* --- Pain Point Hero --- */
[data-theme="light"] .pain-num {
  background: linear-gradient(135deg, #cc2222, #b83030);
  -webkit-background-clip: text; background-clip: text;
  filter: none;
}
[data-theme="light"] .pain-pct {
  background: linear-gradient(135deg, #cc2222, #b83030);
  -webkit-background-clip: text; background-clip: text;
}
[data-theme="light"] .pain-label { color: #4a4a5e; }
[data-theme="light"] .pain-source { color: #888; }
[data-theme="light"] .pain-question {
  color: #8b6914;
  text-shadow: none;
}
[data-theme="light"] .hero-stat-num,
[data-theme="light"] .hero-stat-plus {
  background: linear-gradient(135deg, #cc2222, #b8860b);
  -webkit-background-clip: text; background-clip: text;
}
[data-theme="light"] .hero-stat-label { color: #4a4a5e; }

/* --- Three Doors --- */
[data-theme="light"] .doors {
  background: linear-gradient(135deg, #f8f4ee, #f2ede4, #f6f2ea) !important;
  border-color: rgba(0,0,0,0.06) !important;
}
[data-theme="light"] .door-front {
  background: #fff;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .door-back {
  background: linear-gradient(135deg, #fff, #fdf8f0);
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .door-title { color: #1a1a2e; }
[data-theme="light"] .door-pain { color: #555; }
[data-theme="light"] .door-pain-data {
  background: rgba(204,34,34,0.04);
  border-color: rgba(204,34,34,0.10);
  color: #666;
}
[data-theme="light"] .door-pain-num { color: #cc2222; }
[data-theme="light"] .door-back p { color: #4a4a5e; }

/* --- Scene Sections --- */
[data-theme="light"] .scene-section {
  background: #faf8f5;
}
[data-theme="light"] #enterprise-scenes {
  background: linear-gradient(135deg, #f8f4ee, #f2ede4, #f6f2ea) !important;
  border-color: rgba(0,0,0,0.06) !important;
}
[data-theme="light"] .scene-timeline {
  background: #fff;
  box-shadow: 0 2px 16px rgba(0,0,0,0.05);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .timeline-story-title { color: #1a1a2e; }
[data-theme="light"] .tl-time { color: #8b6914; }
[data-theme="light"] .tl-before {
  background: #fdf5f5;
  border-left-color: #e0a0a0;
  color: #5a4040;
}
[data-theme="light"] .tl-after {
  background: #f2faf5;
  border-left-color: #80c8a0;
  color: #2a4a35;
}
[data-theme="light"] .tl-result { color: #4a4a5e; }
[data-theme="light"] .tl-up { color: #06a050; }

[data-theme="light"] .scene-card {
  background: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .scene-card:hover {
  box-shadow: 0 12px 36px rgba(0,0,0,0.08);
  border-color: #cc2222;
}
[data-theme="light"] .scene-card h4 { color: #1a1a2e; }
[data-theme="light"] .scene-card-pain {
  color: #777;
  border-left-color: #dda0a0;
}
[data-theme="light"] .scene-card-fix { color: #4a4a5e; }
[data-theme="light"] .scene-card-emotion {
  background: #fdf8ee;
  border-color: rgba(180,140,0,0.15);
  color: #7a5e10;
}

/* --- Efficiency Dashboard --- */
[data-theme="light"] .efficiency-dashboard {
  background: #fff;
  box-shadow: 0 2px 16px rgba(0,0,0,0.05);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .eff-label { color: #1a1a2e; }
[data-theme="light"] .eff-bar--before {
  background: #fdf2f2;
  border-color: #e8b0b0;
  color: #aa2222;
}
[data-theme="light"] .eff-bar--after {
  background: #eefaf2;
  border-color: #90d0a8;
  color: #06804a;
}
[data-theme="light"] .eff-boost { color: #06804a; font-weight: 900; }

/* --- ROI Calculator --- */
[data-theme="light"] .roi-calculator {
  background: #fff;
  box-shadow: 0 2px 16px rgba(0,0,0,0.05);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .roi-title { color: #1a1a2e; }
[data-theme="light"] .roi-field label { color: #4a4a5e; }
[data-theme="light"] .roi-field select {
  background: #fff;
  border-color: rgba(0,0,0,0.15);
  color: #1a1a2e;
}
[data-theme="light"] .roi-item {
  background: #faf8f5;
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .roi-item-label { color: #4a4a5e; }
[data-theme="light"] .roi-item--save {
  background: #eefaf2;
  border-color: rgba(6,128,74,0.25);
}
[data-theme="light"] .roi-item-num--old {
  color: #999;
  -webkit-text-fill-color: #999;
}
[data-theme="light"] .roi-item-num--new {
  background: linear-gradient(135deg, #cc2222, #b8860b);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
[data-theme="light"] .roi-item-num--save { color: #06804a; -webkit-text-fill-color: #06804a; }
[data-theme="light"] .roi-item-pct { color: #06804a; }

/* --- ROI Evidence --- */
[data-theme="light"] .roi-evidence-card {
  background: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .roi-evidence-card:hover {
  box-shadow: 0 8px 28px rgba(0,0,0,0.08);
}
[data-theme="light"] .roi-ev-num {
  background: linear-gradient(135deg, #cc2222, #b8860b);
  -webkit-background-clip: text; background-clip: text;
}
[data-theme="light"] .roi-ev-label { color: #1a1a2e; }
[data-theme="light"] .roi-ev-source { color: #888; }

/* --- Why Choose Us --- */
[data-theme="light"] .why-us { background: #faf8f5; }
[data-theme="light"] .compare-table-wrap {
  box-shadow: 0 2px 16px rgba(0,0,0,0.05);
  border-color: rgba(0,0,0,0.08);
  background: #fff;
}
[data-theme="light"] .compare-table thead th {
  background: #f5f2ec;
  color: #1a1a2e;
}
[data-theme="light"] .compare-table td { color: #4a4a5e; }
[data-theme="light"] .compare-table tbody tr:hover {
  background: #faf8f5;
}
[data-theme="light"] td.compare-us { color: #06804a; }
[data-theme="light"] th.compare-us { color: #cc2222; }

[data-theme="light"] .ind-quote {
  background: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
  border-color: rgba(0,0,0,0.06);
  border-left: 3px solid #cc2222;
}
[data-theme="light"] .ind-quote blockquote { color: #1a1a2e; }
[data-theme="light"] .ind-quote cite { color: #888; }
[data-theme="light"] .why-us-cta { color: #1a1a2e; }

/* --- section--accent in light --- */
[data-theme="light"] .section--accent {
  background: linear-gradient(135deg, #f8f4ee, #f2ede4, #f6f2ea) !important;
  border-top-color: rgba(0,0,0,0.06) !important;
  border-bottom-color: rgba(0,0,0,0.06) !important;
}

/* --- CTA in light --- */
[data-theme="light"] .cta-section {
  background: #f5f2ec !important;
}
[data-theme="light"] .cta-title {
  background: linear-gradient(135deg, #1a1a2e 0%, #cc2222 50%, #b8860b 100%) !important;
  -webkit-background-clip: text !important; background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
}
[data-theme="light"] .cta-desc { color: #4a4a5e !important; }
[data-theme="light"] .cta-code {
  background: #fff !important;
  border-color: rgba(0,0,0,0.10) !important;
}
[data-theme="light"] .cta-code code { color: #8b6914 !important; }
[data-theme="light"] .cta-copy {
  background: #fff !important;
  color: #4a4a5e !important;
  border-color: rgba(0,0,0,0.12) !important;
}
[data-theme="light"] .cta-copy:hover {
  color: #cc2222 !important;
  border-color: #cc2222 !important;
}
[data-theme="light"] .cta-sponsor { border-top-color: rgba(0,0,0,0.08) !important; }
[data-theme="light"] .cta-sponsor-text { color: #777 !important; }
[data-theme="light"] .cta-deploy p { color: #4a4a5e !important; }

/* --- Proof / Social Proof in light --- */
[data-theme="light"] .social-proof {
  background: linear-gradient(135deg, #f8f4ee, #f2ede4, #f6f2ea) !important;
  border-color: rgba(0,0,0,0.06) !important;
}
[data-theme="light"] .proof-stats {
  background: #fff;
  box-shadow: 0 2px 16px rgba(0,0,0,0.05);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .proof-stat-num,
[data-theme="light"] .proof-stat-plus {
  background: linear-gradient(135deg, #cc2222, #b8860b);
  -webkit-background-clip: text; background-clip: text;
}
[data-theme="light"] .proof-stat-label { color: #4a4a5e; }
[data-theme="light"] .proof-personas-title { color: #1a1a2e; }
[data-theme="light"] .proof-persona-tag {
  background: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .proof-persona-tag strong { color: #1a1a2e; }
[data-theme="light"] .proof-persona-tag span { color: #4a4a5e; }

/* --- Features in light --- */
[data-theme="light"] .features { background: #f5f2ec; }
[data-theme="light"] .feature-card {
  background: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .feature-card h3 { color: #1a1a2e; }
[data-theme="light"] .feature-card p { color: #4a4a5e; }
[data-theme="light"] .feature-card:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

/* --- Showcase in light --- */
[data-theme="light"] .showcase { background: #f5f2ec; }
[data-theme="light"] .showcase-tabs {
  background: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .showcase-tab { color: #4a4a5e; }
[data-theme="light"] .showcase-tab:hover { color: #1a1a2e; background: rgba(0,0,0,0.03); }
[data-theme="light"] .showcase-tab--active {
  color: #fff !important;
  box-shadow: 0 4px 16px rgba(204,34,34,0.2);
}

/* --- Showcase panels inner elements in light --- */
[data-theme="light"] .voice-feature {
  background: #fff;
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .voice-feature strong { color: #1a1a2e; }
[data-theme="light"] .voice-feature span { color: #4a4a5e; }
[data-theme="light"] .router-mode {
  background: #fff;
  border-color: rgba(0,0,0,0.10);
  color: #4a4a5e;
}
[data-theme="light"] .router-node {
  background: #fff;
  border-color: rgba(0,0,0,0.10);
}
[data-theme="light"] .router-node-name { color: #1a1a2e; }
[data-theme="light"] .router-feat {
  background: #fff;
  border-color: rgba(0,0,0,0.08);
  color: #4a4a5e;
}
[data-theme="light"] .skill-card {
  background: #fff;
  border-color: rgba(0,0,0,0.08);
  color: #1a1a2e;
}
[data-theme="light"] .skill-cat {
  color: #4a4a5e;
  border-color: rgba(0,0,0,0.10);
}
[data-theme="light"] .wechat-card {
  background: #fff;
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .wechat-card h3 { color: #1a1a2e; }
[data-theme="light"] .wechat-card p { color: #4a4a5e; }
[data-theme="light"] .desktop-panel {
  background: #fff;
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .desktop-panel h3,
[data-theme="light"] .showcase-panel-title { color: #1a1a2e; }
[data-theme="light"] .desktop-panel p { color: #4a4a5e; }
[data-theme="light"] .eco-card {
  background: #fff;
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .eco-card strong { color: #1a1a2e; }
[data-theme="light"] .eco-card span { color: #4a4a5e; }
[data-theme="light"] .eco-admin-tags span {
  background: #fff;
  border-color: rgba(0,0,0,0.08);
  color: #4a4a5e;
}
[data-theme="light"] .eco-row-title { color: #1a1a2e; }

/* --- Dashboard preview in light --- */
[data-theme="light"] .dashboard-frame {
  background: #faf8f5;
  border-color: rgba(0,0,0,0.10);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}
[data-theme="light"] .dashboard-topbar {
  background: #fff;
  border-bottom-color: rgba(0,0,0,0.06);
}
[data-theme="light"] .dashboard-title { color: #1a1a2e; }
[data-theme="light"] .dashboard-time { color: #777; }
[data-theme="light"] .dash-card {
  background: #fff;
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .dash-card-label { color: #4a4a5e; }
[data-theme="light"] .dash-card-num {
  background: linear-gradient(135deg, #cc2222, #b8860b);
  -webkit-background-clip: text; background-clip: text;
}
[data-theme="light"] .dash-card-trend { color: #777; }
[data-theme="light"] .dash-card-trend--up { color: #06804a; }
[data-theme="light"] .dash-chart {
  background: #fff;
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .dash-chart-title { color: #1a1a2e; }
[data-theme="light"] .dash-feed {
  background: #fff;
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .dash-feed-title { color: #1a1a2e; }
[data-theme="light"] .dash-feed-item {
  color: #4a4a5e;
  border-bottom-color: rgba(0,0,0,0.05);
}

/* --- Quick Start in light --- */
[data-theme="light"] .quickstart { background: #f5f2ec; }

/* --- FAQ in light --- */
[data-theme="light"] .faq { background: #faf8f5; }
[data-theme="light"] .faq-item {
  background: #fff;
  border-color: rgba(0,0,0,0.08);
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}
[data-theme="light"] .faq-q { color: #1a1a2e; }
[data-theme="light"] .faq-a { color: #4a4a5e; }

/* --- Community in light --- */
[data-theme="light"] .community { background: #f5f2ec; }
[data-theme="light"] .community-card {
  background: #fff;
  border-color: rgba(0,0,0,0.08);
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
[data-theme="light"] .community-card h3 { color: #1a1a2e; }
[data-theme="light"] .community-card p { color: #4a4a5e; }
[data-theme="light"] .community-handle { color: #8b6914; }
[data-theme="light"] .community-qr-img { border-color: rgba(0,0,0,0.08); }

/* --- Footer in light --- */
[data-theme="light"] .footer {
  background: #eee9df !important;
  border-top-color: rgba(0,0,0,0.08) !important;
}
[data-theme="light"] .footer-name {
  background: linear-gradient(135deg, #cc2222, #b8860b) !important;
  -webkit-background-clip: text !important; background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
}
[data-theme="light"] .footer-desc { color: #4a4a5e !important; }
[data-theme="light"] .footer-col h4 { color: #1a1a2e !important; }
[data-theme="light"] .footer-col a { color: #555 !important; }
[data-theme="light"] .footer-col a:hover { color: #cc2222 !important; }
[data-theme="light"] .footer-bottom {
  border-top-color: rgba(0,0,0,0.08) !important;
}
[data-theme="light"] .footer-bottom p { color: #888 !important; }

/* --- WeChat Modal --- */
.wechat-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.wechat-modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}
.wechat-modal {
  position: relative;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 20px;
  padding: 48px 40px 40px;
  max-width: 400px;
  width: 90%;
  text-align: center;
  box-shadow: 0 24px 80px rgba(0,0,0,0.3);
  transform: translateY(20px) scale(0.95);
  transition: transform 0.3s;
}
.wechat-modal-overlay.active .wechat-modal {
  transform: translateY(0) scale(1);
}
.wechat-modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--c-border);
  background: transparent;
  color: var(--c-text-dim);
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.wechat-modal-close:hover {
  background: rgba(255,51,51,0.08);
  border-color: var(--c-primary);
  color: var(--c-primary);
}
.wechat-modal-icon {
  font-size: 48px;
  margin-bottom: 16px;
}
.wechat-modal-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--c-text);
  margin-bottom: 8px;
}
.wechat-modal-desc {
  font-size: 14px;
  color: var(--c-text-dim);
  margin-bottom: 28px;
}
.wechat-modal-id {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: 12px;
  background: var(--c-bg-2);
  border: 1px solid var(--c-border);
  margin-bottom: 20px;
}
.wechat-modal-id span {
  font-size: 14px;
  color: var(--c-text-dim);
}
.wechat-modal-id strong {
  font-size: 18px;
  font-weight: 800;
  color: var(--c-primary);
  letter-spacing: 0.5px;
}
.wechat-modal-copy {
  padding: 4px 14px;
  border-radius: 6px;
  border: 1px solid var(--c-primary);
  background: transparent;
  color: var(--c-primary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.wechat-modal-copy:hover {
  background: var(--c-primary);
  color: #fff;
}
.wechat-modal-tip {
  font-size: 13px;
  color: var(--c-text-dimmer);
  font-style: italic;
}

/* Light theme: WeChat Modal */
[data-theme="light"] .wechat-modal-overlay { background: rgba(0,0,0,0.4); }
[data-theme="light"] .wechat-modal {
  background: #fff;
  border-color: rgba(0,0,0,0.08);
  box-shadow: 0 24px 80px rgba(0,0,0,0.15);
}
[data-theme="light"] .wechat-modal-close {
  border-color: rgba(0,0,0,0.10);
  color: #999;
}
[data-theme="light"] .wechat-modal-title { color: #1a1a2e; }
[data-theme="light"] .wechat-modal-desc { color: #4a4a5e; }
[data-theme="light"] .wechat-modal-id {
  background: #faf8f5;
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .wechat-modal-id span { color: #666; }
[data-theme="light"] .wechat-modal-id strong { color: #cc2222; }
[data-theme="light"] .wechat-modal-tip { color: #999; }

/* --- Back to top in light --- */
[data-theme="light"] .back-to-top {
  background: #fff;
  border-color: rgba(0,0,0,0.10);
  color: #1a1a2e;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

/* --- btn--enterprise in light --- */
[data-theme="light"] .btn--enterprise {
  border-color: #b8860b;
  color: #7a5e10;
}
[data-theme="light"] .btn--enterprise:hover {
  background: rgba(180,140,0,0.06);
}
[data-theme="light"] .btn--outline {
  border-color: rgba(0,0,0,0.15);
  color: #1a1a2e;
}
[data-theme="light"] .btn--outline:hover {
  border-color: #cc2222;
  background: rgba(204,34,34,0.04);
}

/* --- Demo phone in light (keep dark) --- */
[data-theme="light"] .demo-phone { border-color: #ccc; }
[data-theme="light"] .demo-chat-header {
  background: #fff;
  border-bottom-color: rgba(0,0,0,0.06);
}
[data-theme="light"] .demo-chat-name { color: #1a1a2e; }
[data-theme="light"] .demo-chat-body { background: #faf8f5; }
[data-theme="light"] .demo-chat-input {
  background: #fff;
  border-top-color: rgba(0,0,0,0.06);
}
[data-theme="light"] .demo-input-text {
  background: #f5f2ec;
  border-color: rgba(0,0,0,0.08);
  color: #888;
}
[data-theme="light"] .demo-msg--ai .demo-msg-bubble {
  background: #fff;
  border-color: rgba(0,0,0,0.08);
  color: #1a1a2e;
}
[data-theme="light"] .demo-capability {
  background: #fff;
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .demo-capability strong { color: #1a1a2e; }
[data-theme="light"] .demo-capability span { color: #4a4a5e; }
[data-theme="light"] .demo-replay-btn {
  background: #fff;
  border-color: rgba(0,0,0,0.10);
  color: #1a1a2e;
}
[data-theme="light"] .demo-sidebar-title { color: #1a1a2e; }

/* --- Mobile nav in light --- */
[data-theme="light"] .nav-link { color: #4a4a5e; }
[data-theme="light"] .nav-link:hover,
[data-theme="light"] .nav-link.active { color: #1a1a2e; background: rgba(0,0,0,0.04); }
[data-theme="light"] .nav-link.active { color: #8b6914; }

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Reveal Animation ─── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--transition), transform 0.8s var(--transition);
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════ Navigation ═══════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 24px;
  transition: background var(--transition), box-shadow var(--transition);
}
.nav.scrolled {
  background: rgba(8, 8, 8, 0.92);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--c-border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 18px;
}
.nav-logo {
  font-size: 24px;
  filter: drop-shadow(0 0 8px var(--c-primary-glow));
}
.nav-name {
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  position: relative;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--c-text-dim);
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover, .nav-link.active {
  color: var(--c-text);
  background: rgba(255, 255, 255, 0.05);
}
.nav-link--cta {
  background: linear-gradient(135deg, var(--c-primary), #ff6633);
  color: #fff !important;
  font-weight: 600;
}
.nav-link--cta:hover {
  background: linear-gradient(135deg, #ff4444, #ff7744);
  box-shadow: 0 0 20px var(--c-primary-glow);
}
.nav-lang {
  padding: 4px 12px;
  border-radius: 6px;
  border: 1px solid var(--c-border-hover);
  background: transparent;
  color: var(--c-text-dim);
  font-size: 12px;
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 1px;
}
.nav-lang:hover {
  border-color: var(--c-gold);
  color: var(--c-gold);
}
.nav-theme {
  padding: 4px 8px;
  border-radius: 6px;
  border: 1px solid var(--c-border-hover);
  background: transparent;
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1;
}
.nav-theme:hover {
  border-color: var(--c-gold);
  transform: rotate(20deg);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ═══════════════ Hero Section ═══════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(255, 51, 51, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(255, 215, 0, 0.06) 0%, transparent 50%);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  width: 100%;
}
.hero-badge {
  display: inline-block;
  padding: 6px 20px;
  border-radius: 100px;
  border: 1px solid var(--c-border-hover);
  background: rgba(255, 255, 255, 0.03);
  font-size: 13px;
  color: var(--c-text-dim);
  letter-spacing: 2px;
  margin-bottom: 32px;
}
.hero-title {
  margin-bottom: 20px;
}
.hero-title-cn {
  display: block;
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 900;
  line-height: 1.1;
  background: linear-gradient(135deg, #fff 0%, var(--c-primary) 40%, var(--c-gold) 70%, #fff 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: titleShimmer 4s ease-in-out infinite;
  filter: drop-shadow(0 0 30px rgba(255, 51, 51, 0.3));
}
@keyframes titleShimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
.hero-slogan {
  font-size: clamp(20px, 3vw, 32px);
  font-weight: 300;
  color: var(--c-gold);
  letter-spacing: 4px;
  margin-bottom: 24px;
  text-shadow: 0 0 20px var(--c-gold-dim);
}
.hero-desc {
  font-size: 16px;
  color: var(--c-text-dim);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.8;
}
.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}
.hero-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-stat {
  text-align: center;
}
.hero-stat-num {
  display: block;
  font-size: 42px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.hero-stat-plus {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-stat-label {
  display: block;
  font-size: 13px;
  color: var(--c-text-dim);
  margin-top: 4px;
}
.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--c-text-dimmer);
  font-size: 12px;
  z-index: 2;
}
.hero-scroll-arrow {
  width: 20px;
  height: 20px;
  margin: 8px auto 0;
  border-right: 2px solid var(--c-text-dimmer);
  border-bottom: 2px solid var(--c-text-dimmer);
  transform: rotate(45deg);
  animation: scrollBounce 2s ease-in-out infinite;
}
@keyframes scrollBounce {
  0%, 100% { transform: rotate(45deg) translateY(0); opacity: 1; }
  50% { transform: rotate(45deg) translateY(6px); opacity: 0.5; }
}

/* ─── Buttons ─── */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  overflow: hidden;
  border: none;
}
.btn--primary {
  background: linear-gradient(135deg, var(--c-primary), #ff6633);
  color: #fff;
  box-shadow: 0 4px 20px var(--c-primary-glow);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--c-primary-glow);
}
.btn-glow {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s;
}
.btn--primary:hover .btn-glow { opacity: 1; }
.btn--outline {
  background: transparent;
  border: 1px solid var(--c-border-hover);
  color: var(--c-text);
}
.btn--outline:hover {
  border-color: var(--c-primary);
  background: rgba(255, 51, 51, 0.05);
  transform: translateY(-2px);
}
.btn--large {
  padding: 16px 36px;
  font-size: 17px;
  border-radius: 12px;
}

/* ═══════════════ Section Common ═══════════════ */
.section {
  padding: 100px 0;
  position: relative;
}
.section--standard { padding: 100px 0; }
.section--compact { padding: 72px 0; }
.section--hero { padding: 140px 0; }
.section--accent {
  padding: 120px 0;
  background: linear-gradient(135deg, rgba(255, 51, 51, 0.06), rgba(139, 92, 246, 0.04), rgba(255, 215, 0, 0.04));
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--c-primary);
  border: 1px solid rgba(255, 51, 51, 0.2);
  background: rgba(255, 51, 51, 0.05);
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  text-align: center;
}
.section-subtitle {
  font-size: 17px;
  color: var(--c-text-dim);
}
.section-desc {
  font-size: 16px;
  color: var(--c-text-dim);
  line-height: 1.6;
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}
.section > .container > .section-title:first-child,
.section > .container > h2.section-title {
  text-align: center;
}

/* ─── Section Divider Gradient ─── */
/* Removed: pseudo dividers caused layout gaps on some browsers */

/* ═══════════════ Features Grid ═══════════════ */
.features {
  background: var(--c-bg-2);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  position: relative;
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  transition: all var(--transition);
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-gold), var(--c-purple));
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--c-border-hover);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}
.feature-card:hover::before { opacity: 1; }
.feature-card-glow {
  position: absolute;
  top: -40%;
  left: -40%;
  width: 180%;
  height: 180%;
  background: radial-gradient(circle, var(--c-primary-glow) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.6s;
  pointer-events: none;
}
.feature-card:hover .feature-card-glow { opacity: 0.08; }
.feature-card-icon {
  font-size: 40px;
  margin-bottom: 20px;
  display: block;
}
.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--c-text-dim);
  line-height: 1.7;
}

/* ═══════════════ Voice Section ═══════════════ */
.voice {
  background: var(--c-bg);
  overflow: hidden;
}
.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.voice-features {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 32px;
}
.voice-feature {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px;
  border-radius: var(--radius);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  transition: all var(--transition);
}
.voice-feature:hover {
  border-color: var(--c-primary);
  background: rgba(255, 51, 51, 0.03);
}
.voice-feature-icon {
  font-size: 24px;
  flex-shrink: 0;
  margin-top: 2px;
}
.voice-feature strong {
  display: block;
  font-size: 15px;
  margin-bottom: 2px;
}
.voice-feature span {
  font-size: 13px;
  color: var(--c-text-dim);
}

/* Voice Visualizer */
.voice-visualizer {
  position: relative;
  width: 360px;
  height: 360px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
}
.voice-viz-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid;
  animation: vizPulse 3s ease-in-out infinite;
}
.voice-viz-ring--1 {
  width: 200px; height: 200px;
  border-color: rgba(255, 51, 51, 0.3);
  animation-delay: 0s;
}
.voice-viz-ring--2 {
  width: 280px; height: 280px;
  border-color: rgba(255, 215, 0, 0.15);
  animation-delay: 0.5s;
}
.voice-viz-ring--3 {
  width: 350px; height: 350px;
  border-color: rgba(139, 92, 246, 0.1);
  animation-delay: 1s;
}
@keyframes vizPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.06); opacity: 0.6; }
}
.voice-viz-core {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary), #ff6633);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  box-shadow: 0 0 60px var(--c-primary-glow);
  z-index: 2;
  animation: corePulse 2s ease-in-out infinite;
}
@keyframes corePulse {
  0%, 100% { box-shadow: 0 0 40px var(--c-primary-glow); }
  50% { box-shadow: 0 0 80px var(--c-primary-glow), 0 0 120px rgba(255, 51, 51, 0.1); }
}
.voice-viz-bars {
  position: absolute;
  bottom: 40px;
  display: flex;
  gap: 4px;
  align-items: flex-end;
  height: 40px;
}
.voice-viz-bar {
  width: 4px;
  border-radius: 2px;
  background: linear-gradient(to top, var(--c-primary), var(--c-gold));
  animation: barBounce 0.8s ease-in-out infinite alternate;
}
.voice-viz-bar:nth-child(1) { height: 15px; animation-delay: 0s; }
.voice-viz-bar:nth-child(2) { height: 25px; animation-delay: 0.1s; }
.voice-viz-bar:nth-child(3) { height: 35px; animation-delay: 0.2s; }
.voice-viz-bar:nth-child(4) { height: 20px; animation-delay: 0.3s; }
.voice-viz-bar:nth-child(5) { height: 40px; animation-delay: 0.15s; }
.voice-viz-bar:nth-child(6) { height: 28px; animation-delay: 0.25s; }
.voice-viz-bar:nth-child(7) { height: 35px; animation-delay: 0.05s; }
.voice-viz-bar:nth-child(8) { height: 18px; animation-delay: 0.35s; }
.voice-viz-bar:nth-child(9) { height: 22px; animation-delay: 0.2s; }
@keyframes barBounce {
  0% { transform: scaleY(0.4); }
  100% { transform: scaleY(1); }
}
.voice-viz-label {
  position: absolute;
  bottom: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--c-text-dim);
  white-space: nowrap;
}
.voice-viz-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-wechat);
  animation: dotBlink 1.5s ease-in-out infinite;
}
@keyframes dotBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ═══════════════ Router Section ═══════════════ */
.router {
  background: var(--c-bg-2);
}
.router-modes {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}
.router-mode {
  padding: 10px 24px;
  border-radius: 100px;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition);
}
.router-mode:hover, .router-mode--active {
  border-color: var(--c-primary);
  background: rgba(255, 51, 51, 0.08);
  box-shadow: 0 0 20px rgba(255, 51, 51, 0.1);
}
.router-mode-icon { font-size: 18px; }

/* Router Network */
.router-network {
  position: relative;
  width: 500px;
  height: 500px;
  margin: 0 auto 48px;
}
.router-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
}
.router-brain {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  box-shadow: 0 0 40px var(--c-primary-glow);
}
.router-pulse {
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  border: 2px solid var(--c-primary);
  opacity: 0;
  animation: routerPulse 2s ease-out infinite;
}
@keyframes routerPulse {
  0% { transform: scale(0.8); opacity: 0.6; }
  100% { transform: scale(2); opacity: 0; }
}
.router-nodes {
  position: absolute;
  inset: 0;
}
.router-node {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%)
    rotate(var(--angle))
    translateY(calc(-200px * var(--dist)))
    rotate(calc(-1 * var(--angle)));
  padding: 8px 16px;
  border-radius: 10px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  transition: all var(--transition);
  animation: nodeFloat 6s ease-in-out infinite;
  animation-delay: calc(var(--angle) * 20ms);
}
.router-node:hover {
  border-color: var(--c-gold);
  box-shadow: 0 0 20px var(--c-gold-dim);
  transform: translate(-50%, -50%)
    rotate(var(--angle))
    translateY(calc(-200px * var(--dist)))
    rotate(calc(-1 * var(--angle)))
    scale(1.1);
}
@keyframes nodeFloat {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.3); }
}
.router-node-name { color: var(--c-text); }

.router-features {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}
.router-feat {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--c-text-dim);
  padding: 8px 16px;
  border-radius: 8px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
}

/* ═══════════════ Skills Section ═══════════════ */
.skills {
  background: var(--c-bg);
}
.skill-categories {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.skill-cat {
  padding: 8px 20px;
  border-radius: 100px;
  border: 1px solid var(--c-border);
  background: transparent;
  color: var(--c-text-dim);
  font-size: 14px;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
}
.skill-cat:hover, .skill-cat--active {
  background: rgba(255, 51, 51, 0.08);
  border-color: var(--c-primary);
  color: var(--c-text);
}
.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 32px;
}
.skill-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  font-size: 14px;
  transition: all var(--transition);
  cursor: default;
}
.skill-card:hover {
  border-color: var(--c-gold);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}
.skill-card.hidden { display: none; }
.skill-emoji { font-size: 22px; }
.skill-hint {
  text-align: center;
  font-size: 14px;
  color: var(--c-text-dimmer);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

/* ═══════════════ WeChat Section ═══════════════ */
.wechat {
  background: var(--c-bg-2);
}
.wechat .section-tag {
  color: var(--c-wechat);
  border-color: rgba(7, 193, 96, 0.2);
  background: rgba(7, 193, 96, 0.05);
}
.wechat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.wechat-card {
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  transition: all var(--transition);
}
.wechat-card:hover {
  border-color: rgba(7, 193, 96, 0.3);
  box-shadow: 0 0 30px var(--c-wechat-glow);
  transform: translateY(-4px);
}
.wechat-card--large {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, var(--c-surface), rgba(7, 193, 96, 0.03));
}
.wechat-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.wechat-card-icon { font-size: 28px; }
.wechat-card h3 {
  font-size: 18px;
  font-weight: 700;
}
.wechat-card p {
  font-size: 14px;
  color: var(--c-text-dim);
  line-height: 1.7;
}

/* WeChat Track Visual */
.wechat-card-visual {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.wechat-track {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 8px;
  background: rgba(7, 193, 96, 0.05);
  border: 1px solid rgba(7, 193, 96, 0.15);
  font-size: 13px;
}
.wechat-track-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-wechat);
  animation: dotBlink 1.2s ease-in-out infinite;
}
.wechat-track-dot--2 { animation-delay: 0.3s; }
.wechat-track-dot--3 { animation-delay: 0.6s; }
.wechat-merge {
  font-size: 13px;
  font-weight: 600;
  color: var(--c-wechat);
}

/* ═══════════════ Desktop + Workflow ═══════════════ */
.desktop {
  background: var(--c-bg);
}
.desktop-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.desktop-panel {
  padding: 40px;
  border-radius: var(--radius-lg);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
}
.desktop-panel .section-title {
  font-size: 28px;
  margin-top: 12px;
}
.desktop-panel p {
  font-size: 14px;
  color: var(--c-text-dim);
  margin-top: 8px;
  line-height: 1.7;
}

/* Desktop Screen Mock */
.desktop-demo { margin: 24px 0; }
.desktop-screen {
  position: relative;
  border-radius: var(--radius);
  background: #111;
  border: 1px solid var(--c-border-hover);
  overflow: hidden;
}
.desktop-screen-header {
  display: flex;
  gap: 6px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.03);
}
.desktop-screen-header span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-text-dimmer);
}
.desktop-screen-header span:first-child { background: #ff5f57; }
.desktop-screen-header span:nth-child(2) { background: #ffbd2e; }
.desktop-screen-header span:nth-child(3) { background: #28c840; }
.desktop-screen-body {
  padding: 24px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  min-height: 120px;
  position: relative;
}
.desktop-cursor {
  position: absolute;
  top: 30px;
  left: 30px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-primary);
  box-shadow: 0 0 10px var(--c-primary-glow);
  animation: cursorMove 4s ease-in-out infinite;
}
@keyframes cursorMove {
  0% { top: 30px; left: 30px; }
  25% { top: 50px; left: 120px; }
  50% { top: 30px; left: 200px; }
  75% { top: 60px; left: 80px; }
  100% { top: 30px; left: 30px; }
}
.desktop-action {
  padding: 8px 14px;
  border-radius: 6px;
  background: rgba(255, 51, 51, 0.08);
  border: 1px solid rgba(255, 51, 51, 0.15);
  font-size: 12px;
  animation: actionPulse 2s ease-in-out infinite;
}
.desktop-action:nth-child(2) { animation-delay: 0.5s; }
.desktop-action:nth-child(3) { animation-delay: 1s; }
.desktop-action:nth-child(4) { animation-delay: 1.5s; }
@keyframes actionPulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}
.desktop-fps {
  position: absolute;
  top: 10px;
  right: 14px;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(7, 193, 96, 0.15);
  color: var(--c-wechat);
  font-size: 11px;
  font-weight: 700;
}
.desktop-tags, .tag {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.tag {
  padding: 6px 14px;
  border-radius: 100px;
  background: rgba(139, 92, 246, 0.08);
  border: 1px solid rgba(139, 92, 246, 0.15);
  font-size: 12px;
  color: var(--c-purple);
}

/* Workflow Demo */
.workflow-demo {
  margin: 24px 0;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.workflow-node {
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--c-border);
}
.workflow-node--trigger {
  background: rgba(255, 215, 0, 0.08);
  border-color: rgba(255, 215, 0, 0.2);
  color: var(--c-gold);
}
.workflow-node--ai {
  background: rgba(139, 92, 246, 0.08);
  border-color: rgba(139, 92, 246, 0.2);
  color: var(--c-purple);
}
.workflow-node--condition {
  background: rgba(34, 211, 238, 0.08);
  border-color: rgba(34, 211, 238, 0.2);
  color: var(--c-cyan);
}
.workflow-node--action {
  background: rgba(7, 193, 96, 0.08);
  border-color: rgba(7, 193, 96, 0.2);
  color: var(--c-wechat);
}
.workflow-arrow {
  color: var(--c-text-dimmer);
  font-size: 18px;
}
.workflow-branch {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-left: 8px;
}
.workflow-branch-line {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--c-text-dim);
}

/* ═══════════════ Ecosystem ═══════════════ */
.ecosystem {
  background: var(--c-bg-2);
}
.eco-row {
  margin-bottom: 48px;
}
.eco-row-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
}
.eco-cards {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.eco-card {
  flex: 1;
  min-width: 140px;
  padding: 24px 20px;
  border-radius: var(--radius);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  text-align: center;
  transition: all var(--transition);
}
.eco-card:hover {
  border-color: var(--c-primary);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}
.eco-card-icon {
  font-size: 32px;
  display: block;
  margin-bottom: 12px;
}
.eco-card strong {
  display: block;
  font-size: 15px;
  margin-bottom: 4px;
}
.eco-card span {
  font-size: 12px;
  color: var(--c-text-dim);
}
.eco-card--bridge {
  min-width: 100px;
  padding: 16px;
}
.eco-card--bridge strong { margin-bottom: 0; }
.eco-admin-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.eco-admin-tags span {
  padding: 8px 16px;
  border-radius: 8px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  font-size: 13px;
  transition: all var(--transition);
}
.eco-admin-tags span:hover {
  border-color: var(--c-gold);
  color: var(--c-gold);
}

/* ═══════════════ Stats Section ═══════════════ */
.stats {
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(255, 51, 51, 0.06), rgba(139, 92, 246, 0.06));
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item { text-align: center; }
.stat-num {
  display: inline;
  font-size: 48px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.stat-plus {
  font-size: 32px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  display: block;
  font-size: 14px;
  color: var(--c-text-dim);
  margin-top: 8px;
}

/* ═══════════════ Personas ═══════════════ */
.personas {
  background: var(--c-bg);
}
.persona-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.persona-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 16px;
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.persona-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, var(--c-primary-glow) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.4s;
}
.persona-card:hover::before { opacity: 1; }
.persona-card:hover {
  transform: translateY(-8px);
  border-color: var(--c-primary);
  box-shadow: 0 20px 60px rgba(255, 45, 32, 0.1);
}
.persona-avatar {
  font-size: 48px;
  margin-bottom: 16px;
  position: relative;
}
.persona-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 12px;
  position: relative;
}
.persona-scene {
  font-size: 14px;
  color: var(--c-text-dim);
  line-height: 1.7;
  margin-bottom: 16px;
  position: relative;
}
.persona-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold));
  color: #fff;
  position: relative;
}
@media (max-width: 768px) {
  .persona-grid { grid-template-columns: 1fr; gap: 16px; }
  .persona-card { padding: 24px 20px; }
}

/* ═══════════════ Testimonials ═══════════════ */
.testimonials {
  background: var(--c-bg-2);
  overflow: hidden;
  padding-bottom: 80px;
}
.testimonial-track {
  margin-top: 48px;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.testimonial-scroll {
  display: flex;
  gap: 24px;
  animation: testimonialScroll 40s linear infinite;
  width: max-content;
}
.testimonial-scroll:hover {
  animation-play-state: paused;
}
@keyframes testimonialScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.testimonial-card {
  flex-shrink: 0;
  width: 340px;
  padding: 28px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 16px;
  transition: all var(--transition);
}
.testimonial-card:hover {
  border-color: var(--c-gold-dim);
  box-shadow: 0 12px 40px rgba(255, 215, 0, 0.08);
  transform: translateY(-4px);
}
.testimonial-stars {
  color: var(--c-gold);
  font-size: 16px;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.testimonial-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-text);
  margin-bottom: 20px;
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.testimonial-avatar {
  font-size: 32px;
}
.testimonial-author strong {
  display: block;
  font-size: 14px;
  color: var(--c-text);
}
.testimonial-author span {
  font-size: 12px;
  color: var(--c-text-dimmer);
}
@media (max-width: 768px) {
  .testimonial-card { width: 280px; padding: 20px; }
  .testimonial-text { font-size: 13px; }
}

/* ═══════════════ Comparison ═══════════════ */
.comparison {
  background: var(--c-bg);
}
.comparison-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.comparison-table th,
.comparison-table td {
  padding: 16px 24px;
  text-align: left;
  border-bottom: 1px solid var(--c-border);
}
.comparison-table thead th {
  background: var(--c-surface);
  font-weight: 700;
  font-size: 15px;
  position: sticky;
  top: 0;
}
.comparison-table tbody tr {
  transition: background var(--transition);
}
.comparison-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}
.comparison-table tbody tr:last-child td {
  border-bottom: none;
}
td.comparison-us {
  color: var(--c-primary);
}
td.comparison-us strong {
  color: var(--c-text);
}
th.comparison-us {
  color: var(--c-primary);
}

/* ═══════════════ Roadmap Timeline ═══════════════ */
.roadmap {
  background: var(--c-bg-2);
}
.timeline {
  position: relative;
  max-width: 700px;
  margin: 48px auto 0;
  padding-left: 40px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-primary), var(--c-gold) 60%, var(--c-border) 80%);
}
.timeline-item {
  position: relative;
  margin-bottom: 32px;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -33px;
  top: 20px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 3px solid var(--c-border);
  background: var(--c-bg-2);
  z-index: 2;
  transition: all 0.4s;
}
.timeline-done .timeline-dot {
  background: var(--c-primary);
  border-color: var(--c-primary);
  box-shadow: 0 0 12px var(--c-primary-glow);
}
.timeline-active .timeline-dot {
  background: var(--c-gold);
  border-color: var(--c-gold);
  box-shadow: 0 0 16px rgba(255, 215, 0, 0.5);
  animation: dotPulse 2s ease-in-out infinite;
}
@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 8px rgba(255, 215, 0, 0.4); transform: scale(1); }
  50% { box-shadow: 0 0 24px rgba(255, 215, 0, 0.7); transform: scale(1.2); }
}
.timeline-future .timeline-dot {
  border-style: dashed;
  border-color: var(--c-text-dimmer);
}
.timeline-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 12px;
  padding: 20px 24px;
  transition: all var(--transition);
}
.timeline-item:hover .timeline-card {
  border-color: var(--c-primary);
  box-shadow: 0 8px 32px var(--c-primary-glow);
  transform: translateX(4px);
}
.timeline-date {
  font-size: 12px;
  font-weight: 700;
  color: var(--c-gold);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.timeline-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-text);
  margin: 6px 0 4px;
}
.timeline-card p {
  font-size: 13px;
  color: var(--c-text-dim);
  line-height: 1.6;
  margin: 0;
}
.timeline-future .timeline-card {
  opacity: 0.6;
}
.timeline-future:hover .timeline-card {
  opacity: 1;
}
@media (max-width: 768px) {
  .timeline { padding-left: 32px; }
  .timeline::before { left: 11px; }
  .timeline-dot { left: -28px; width: 12px; height: 12px; }
  .timeline-card { padding: 16px 18px; }
  .timeline-card h3 { font-size: 15px; }
}

/* ═══════════════ Quick Start Terminal ═══════════════ */
.quickstart {
  background: var(--c-bg-2);
}
.terminal {
  max-width: 720px;
  margin: 40px auto 0;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--c-border);
  background: #0d0d0d;
  box-shadow: 0 20px 80px rgba(0, 0, 0, 0.4);
}
.terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: #1a1a1a;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.terminal-title {
  margin-left: 12px;
  font-family: 'Courier New', monospace;
  font-size: 12px;
  color: rgba(255,255,255,0.4);
}
.terminal-body {
  padding: 20px;
  font-family: 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.8;
  min-height: 200px;
  color: #e0e0e0;
}
.terminal-line {
  white-space: nowrap;
}
.terminal-prompt {
  color: var(--c-gold);
  margin-right: 8px;
  font-weight: 700;
}
.terminal-cmd {
  color: #50fa7b;
}
.terminal-cmd::after {
  content: '▊';
  animation: termBlink 0.8s step-end infinite;
  color: #50fa7b;
  margin-left: 2px;
  display: none;
}
.terminal-cmd.typing::after {
  display: inline;
}
@keyframes termBlink {
  50% { opacity: 0; }
}
.terminal-output {
  color: rgba(255, 255, 255, 0.55);
  white-space: pre-wrap;
  padding-left: 20px;
  margin: 4px 0 12px;
  font-size: 13px;
}
.terminal-hidden {
  display: none;
}
.terminal-success {
  color: var(--c-gold);
  font-weight: 700;
  font-size: 15px;
}
.qs-features {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 32px;
}
.qs-chip {
  padding: 6px 18px;
  border-radius: 20px;
  border: 1px solid var(--c-border);
  font-size: 13px;
  color: var(--c-text-dim);
  background: var(--c-surface);
  transition: all var(--transition);
}
.qs-chip:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

/* ═══════════════ FAQ ═══════════════ */
.faq {
  background: var(--c-bg);
}
.faq-list {
  max-width: 800px;
  margin: 40px auto 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  border: 1px solid var(--c-border);
  border-radius: 12px;
  background: var(--c-surface);
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item[open] {
  border-color: var(--c-primary);
  box-shadow: 0 4px 24px var(--c-primary-glow);
}
.faq-q {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: color var(--transition);
}
.faq-q::-webkit-details-marker { display: none; }
.faq-q::marker { display: none; content: ''; }
.faq-q::after {
  content: '+';
  font-size: 22px;
  font-weight: 300;
  color: var(--c-text-dim);
  transition: transform 0.3s;
  flex-shrink: 0;
  width: 24px;
  text-align: center;
}
.faq-item[open] .faq-q::after {
  content: '−';
  color: var(--c-primary);
}
.faq-item[open] .faq-q {
  color: var(--c-primary);
}
.faq-q:hover {
  color: var(--c-primary);
}
.faq-a {
  padding: 0 24px 20px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--c-text-dim);
  animation: faqSlide 0.3s ease;
}
@keyframes faqSlide {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ═══════════════ Sponsor Section ═══════════════ */
.sponsor {
  background: var(--c-bg);
}
.sponsor .section-tag {
  color: var(--c-gold);
  border-color: rgba(255, 215, 0, 0.2);
  background: rgba(255, 215, 0, 0.05);
}
.sponsor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}
.sponsor-card {
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius-lg);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  transition: all var(--transition);
}
.sponsor-card:hover {
  border-color: var(--c-gold);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(255, 215, 0, 0.08);
}
.sponsor-icon { font-size: 36px; display: block; margin-bottom: 14px; }
.sponsor-card strong { display: block; font-size: 16px; margin-bottom: 8px; }
.sponsor-card p { font-size: 13px; color: var(--c-text-dim); line-height: 1.6; }
.sponsor-contact {
  text-align: center;
  font-size: 15px;
  color: var(--c-text-dim);
}

/* ═══════════════ Community Section ═══════════════ */
.community {
  background: var(--c-bg-2);
}
.community-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.community-card {
  text-align: center;
  padding: 40px 28px;
  border-radius: 16px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  transition: all 0.4s cubic-bezier(.22,1,.36,1);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
}
.community-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-gold));
  border-radius: 0 0 4px 4px;
  opacity: 0;
  transition: opacity 0.3s, width 0.3s;
}
.community-card:hover::before {
  opacity: 1;
  width: 120px;
}
.community-card:hover {
  border-color: var(--c-primary);
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(255, 45, 32, 0.12);
}
.community-icon {
  font-size: 48px;
  margin-bottom: 4px;
}
.community-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--c-text);
}
.community-card p {
  font-size: 13px;
  color: var(--c-text-dim);
  line-height: 1.6;
}
.community-handle {
  font-size: 14px;
  color: var(--c-gold);
  font-weight: 600;
}
.community-action {
  margin-top: 8px;
  padding: 8px 20px;
  border-radius: 20px;
  border: 1px solid var(--c-primary);
  font-size: 13px;
  font-weight: 600;
  color: var(--c-primary);
  transition: all var(--transition);
}
.community-card:hover .community-action {
  background: var(--c-primary);
  color: #fff;
}
.community-qr {
  margin-top: 8px;
}
.qr-placeholder {
  padding: 16px;
  border: 1px dashed var(--c-border-hover);
  border-radius: 8px;
  font-size: 12px;
  color: var(--c-text-dimmer);
  line-height: 1.6;
}
.community-qr-img {
  width: 140px;
  height: 140px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--c-border);
  margin-top: 4px;
}

/* QR code crop containers */
.qr-crop {
  width: 160px;
  height: 160px;
  border-radius: 16px;
  overflow: hidden;
  margin: 12px auto 0;
  border: 2px solid var(--c-border);
  background: #fff;
}
.qr-crop img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  padding: 6px;
}
[data-theme="light"] .qr-crop { border-color: rgba(0,0,0,0.10); }
.community-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--c-border);
}
.community-stat {
  text-align: center;
}
.community-stat-num {
  display: block;
  font-size: 28px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.community-stat-label {
  font-size: 13px;
  color: var(--c-text-dim);
  margin-top: 4px;
}

@media (max-width: 768px) {
  .sponsor-grid { grid-template-columns: 1fr 1fr; }
  .community-grid { grid-template-columns: 1fr; }
  .community-stats { gap: 30px; }
}
@media (max-width: 480px) {
  .sponsor-grid { grid-template-columns: 1fr; }
}

/* ═══════════════ CTA Section ═══════════════ */
.cta-section {
  background:
    radial-gradient(ellipse at 50% 50%, rgba(255, 51, 51, 0.08) 0%, transparent 60%),
    var(--c-bg-2);
}
.cta-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}
.cta-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 900;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff, var(--c-primary), var(--c-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.cta-desc {
  font-size: 17px;
  color: var(--c-text-dim);
  margin-bottom: 40px;
}
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.cta-deploy {
  margin-top: 32px;
}
.cta-deploy p {
  font-size: 14px;
  color: var(--c-text-dim);
  margin-bottom: 12px;
}
.cta-code {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 14px 24px;
  border-radius: var(--radius);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  font-family: 'SF Mono', 'Fira Code', monospace;
}
.cta-code code {
  font-size: 14px;
  color: var(--c-gold);
}
.cta-copy {
  padding: 4px 12px;
  border-radius: 6px;
  border: 1px solid var(--c-border);
  background: transparent;
  color: var(--c-text-dim);
  font-size: 12px;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
}
.cta-copy:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}
.cta-badges {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 24px;
}
.cta-badges a {
  transition: transform 0.2s;
}
.cta-badges a:hover {
  transform: translateY(-2px);
}
.cta-badges img {
  height: 28px;
  border-radius: 4px;
}

/* ═══════════════ Footer ═══════════════ */
.footer {
  padding: 80px 0 40px;
  background: var(--c-bg);
  border-top: 1px solid var(--c-border);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-logo { font-size: 36px; }
.footer-name {
  font-size: 20px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-desc {
  font-size: 14px;
  color: var(--c-text-dim);
}
.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--c-text);
  margin-bottom: 4px;
}
.footer-col a {
  font-size: 14px;
  color: var(--c-text-dim);
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--c-primary); }
.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--c-border);
  text-align: center;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--c-text-dimmer);
}

/* ═══════════════ Responsive ═══════════════ */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .split-layout { grid-template-columns: 1fr; gap: 48px; }
  .router-network { width: 400px; height: 400px; }
  .router-node {
    transform: translate(-50%, -50%)
      rotate(var(--angle))
      translateY(calc(-160px * var(--dist)))
      rotate(calc(-1 * var(--angle)));
  }
  .router-node:hover {
    transform: translate(-50%, -50%)
      rotate(var(--angle))
      translateY(calc(-160px * var(--dist)))
      rotate(calc(-1 * var(--angle)))
      scale(1.1);
  }
  .desktop-split { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(8, 8, 8, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px 20px;
    gap: 2px;
    overflow-y: auto;
  }
  [data-theme="light"] .nav-links {
    background: rgba(250, 248, 245, 0.98);
  }
  .nav-links.open { display: flex; }
  .nav-link {
    padding: 14px 20px;
    font-size: 16px;
    border-radius: 12px;
    min-height: 44px;
    display: flex;
    align-items: center;
  }
  .nav-toggle { display: flex; }
  .nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .section { padding: 64px 0; }
  .section-title { font-size: 28px; }
  .section-desc { font-size: 14px; }
  .feature-grid { grid-template-columns: 1fr; }
  .wechat-grid { grid-template-columns: 1fr; }
  .router-network { width: 300px; height: 300px; }
  .router-node {
    font-size: 11px;
    padding: 5px 10px;
    transform: translate(-50%, -50%)
      rotate(var(--angle))
      translateY(calc(-120px * var(--dist)))
      rotate(calc(-1 * var(--angle)));
  }
  .router-node:hover {
    transform: translate(-50%, -50%)
      rotate(var(--angle))
      translateY(calc(-120px * var(--dist)))
      rotate(calc(-1 * var(--angle)))
      scale(1.1);
  }
  .voice-visualizer { width: 280px; height: 280px; }
  .voice-viz-ring--1 { width: 150px; height: 150px; }
  .voice-viz-ring--2 { width: 210px; height: 210px; }
  .voice-viz-ring--3 { width: 270px; height: 270px; }

  .hero-stats { gap: 24px; }
  .hero-stat-num { font-size: 32px; }
  .hero-title-cn { font-size: 48px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-num { font-size: 36px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-code { flex-direction: column; gap: 10px; }
  .eco-card { min-width: 120px; }
  .skill-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }

  .persona-grid { grid-template-columns: 1fr; gap: 16px; }
  .persona-card { padding: 24px 20px; }
  .terminal-body { font-size: 12px; padding: 14px; }
  .terminal-line { white-space: pre-wrap; word-break: break-all; }
  .faq-q { font-size: 15px; padding: 16px 18px; }
  .faq-a { padding: 0 18px 16px; font-size: 13px; }
  .community-grid { grid-template-columns: 1fr; }
  .community-stats { gap: 24px; flex-wrap: wrap; }
}

@media (max-width: 480px) {
  .hero-content { padding: 100px 16px 60px; }
  .hero-title-cn { font-size: 36px; }
  .hero-slogan { letter-spacing: 2px; font-size: 14px; }
  .hero-desc { font-size: 13px; }
  .hero-cta { flex-direction: column; align-items: center; }
  .btn--large { width: 100%; justify-content: center; }
  .desktop-panel { padding: 24px; }
  .wechat-card { padding: 20px; }
  .router-network { width: 260px; height: 260px; }
  .router-node {
    font-size: 10px;
    padding: 4px 8px;
    transform: translate(-50%, -50%)
      rotate(var(--angle))
      translateY(calc(-100px * var(--dist)))
      rotate(calc(-1 * var(--angle)));
  }
  .section { padding: 48px 0; }
  .section-title { font-size: 24px; }
  .terminal { border-radius: 8px; }
  .terminal-body { font-size: 11px; padding: 12px; }
  .terminal-output { font-size: 10px; }
  .qs-features { gap: 8px; }
  .qs-chip { font-size: 11px; padding: 5px 12px; }
  .community-card { padding: 28px 20px; }
  .community-stat-num { font-size: 22px; }
}

/* ─── Button Ripple Effect ─── */
.btn { position: relative; overflow: hidden; }
.btn .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: scale(0);
  animation: rippleAnim 0.6s ease-out;
  pointer-events: none;
}
@keyframes rippleAnim {
  to { transform: scale(4); opacity: 0; }
}

/* ─── Card 3D Tilt ─── */
.tilt-card {
  transform-style: preserve-3d;
  perspective: 800px;
}
.tilt-card > * {
  transform: translateZ(0);
}

/* ─── Magnetic Button ─── */
.btn--magnetic {
  transition: transform 0.2s ease-out;
}

/* ─── Scroll Progress Bar ─── */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--c-primary), var(--c-gold), var(--c-primary));
  background-size: 200% 100%;
  animation: progressShimmer 3s linear infinite;
  z-index: 1001;
  transition: width 0.1s linear;
  pointer-events: none;
}
@keyframes progressShimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ─── Active Nav Link Indicator ─── */
.nav-link.active {
  color: var(--c-gold);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--c-gold);
  border-radius: 2px;
}

/* ─── Accessibility: Skip Link ─── */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--c-primary);
  color: #fff;
  padding: 12px 24px;
  border-radius: 0 0 8px 8px;
  z-index: 10001;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  transition: top 0.3s;
}
.skip-link:focus {
  top: 0;
}

/* ─── Accessibility: Focus Visible ─── */
:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 3px;
}
a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
  outline: none;
}

/* ─── Accessibility: Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .hero-canvas { display: none; }
}

/* ─── Hero Stagger Entrance ─── */
.hero .reveal:nth-child(1) { transition-delay: 0.1s; }
.hero .reveal:nth-child(2) { transition-delay: 0.3s; }
.hero .reveal:nth-child(3) { transition-delay: 0.5s; }
.hero .reveal:nth-child(4) { transition-delay: 0.7s; }
.hero .reveal:nth-child(5) { transition-delay: 0.9s; }
.hero .reveal:nth-child(6) { transition-delay: 1.1s; }

/* ─── Animated Gradient Border on Feature Cards ─── */
.feature-card::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold), var(--c-primary));
  z-index: -1;
  opacity: 0;
  transition: opacity 0.5s;
}
.feature-card:hover::after {
  opacity: 1;
}

/* ─── Back to Top Button ─── */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  color: var(--c-text);
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition);
  z-index: 999;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}
.back-to-top:hover {
  background: var(--c-primary);
  border-color: var(--c-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px var(--c-primary-glow);
}

/* ─── WeChat Card Glow Enhancement ─── */
.wechat-card--large::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, transparent, rgba(7, 193, 96, 0.03));
  pointer-events: none;
}
.wechat-card--large { position: relative; overflow: hidden; }

/* ─── Typing Cursor for Slogan ─── */
.hero-slogan::after {
  content: '|';
  animation: typingCursor 1s step-end infinite;
  color: var(--c-gold);
  margin-left: 2px;
}
@keyframes typingCursor {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* ─── Selection Color ─── */
::selection {
  background: rgba(255, 51, 51, 0.3);
  color: #fff;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--c-bg);
}
::-webkit-scrollbar-thumb {
  background: var(--c-surface-2);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--c-text-dimmer);
}

/* ═══════════════════════════════════════════
   PHASE 2 — Loading, Demo, Dashboard, FX
   ═══════════════════════════════════════════ */

/* ═══════════════ Loading Screen ═══════════════ */
.loader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--c-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s, visibility 0.6s;
}
.loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.loader-content {
  text-align: center;
}
.loader-icon {
  font-size: 72px;
  animation: loaderPulse 1.5s ease-in-out infinite;
  filter: drop-shadow(0 0 30px var(--c-primary-glow));
}
@keyframes loaderPulse {
  0%, 100% { transform: scale(1); filter: drop-shadow(0 0 30px var(--c-primary-glow)); }
  50% { transform: scale(1.12); filter: drop-shadow(0 0 60px var(--c-primary-glow)) drop-shadow(0 0 100px rgba(255,215,0,0.15)); }
}
.loader-text {
  font-size: 28px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 16px 0 24px;
}
.loader-bar {
  width: 200px;
  height: 3px;
  background: var(--c-surface);
  border-radius: 3px;
  margin: 0 auto;
  overflow: hidden;
}
.loader-bar-fill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--c-primary), var(--c-gold));
  border-radius: 3px;
  animation: loaderFill 1.8s ease-out forwards;
}
@keyframes loaderFill {
  0% { width: 0%; }
  60% { width: 80%; }
  100% { width: 100%; }
}
.loader-hint {
  margin-top: 16px;
  font-size: 13px;
  color: var(--c-text-dimmer);
  letter-spacing: 1px;
}

/* ═══════════════ Interactive Chat Demo ═══════════════ */
.demo {
  background: var(--c-bg);
}
.demo-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 60px;
  align-items: center;
  max-width: 900px;
  margin: 0 auto;
}
.demo-phone {
  position: relative;
  width: 380px;
  border-radius: 40px;
  background: #111;
  border: 3px solid #2a2a2a;
  padding: 12px;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.05),
    0 30px 80px rgba(0, 0, 0, 0.6),
    0 0 60px rgba(255, 51, 51, 0.05);
}
.demo-phone-notch {
  width: 120px;
  height: 28px;
  background: #000;
  border-radius: 0 0 16px 16px;
  margin: 0 auto 0;
  position: relative;
  z-index: 2;
}
.demo-phone-screen {
  background: var(--c-bg-2);
  border-radius: 28px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 580px;
}
.demo-chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
}
.demo-chat-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary), #ff6633);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  box-shadow: 0 0 12px var(--c-primary-glow);
}
.demo-chat-info { display: flex; flex-direction: column; }
.demo-chat-name {
  font-size: 15px;
  font-weight: 700;
}
.demo-chat-status {
  font-size: 11px;
  color: var(--c-wechat);
  display: flex;
  align-items: center;
  gap: 4px;
}
.demo-online-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-wechat);
  animation: dotBlink 1.5s ease-in-out infinite;
}
.demo-chat-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scroll-behavior: smooth;
}
.demo-chat-body::-webkit-scrollbar { width: 4px; }
.demo-chat-body::-webkit-scrollbar-thumb { background: var(--c-surface-2); border-radius: 2px; }

.demo-chat-input {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
}
.demo-input-text {
  flex: 1;
  padding: 10px 16px;
  border-radius: 20px;
  background: var(--c-bg);
  font-size: 13px;
  color: var(--c-text-dimmer);
  border: 1px solid var(--c-border);
}
.demo-input-text.typing {
  color: var(--c-text);
  border-color: var(--c-primary);
}
.demo-input-mic {
  font-size: 20px;
  cursor: default;
}

/* Chat Messages */
.demo-msg {
  max-width: 82%;
  animation: msgFadeIn 0.4s ease-out;
}
@keyframes msgFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.demo-msg--user {
  align-self: flex-end;
}
.demo-msg--user .demo-msg-bubble {
  background: linear-gradient(135deg, var(--c-primary), #ff6633);
  color: #fff;
  border-radius: 18px 18px 4px 18px;
  padding: 10px 16px;
  font-size: 14px;
  line-height: 1.6;
}
.demo-msg--ai {
  align-self: flex-start;
}
.demo-msg--ai .demo-msg-bubble {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 18px 18px 18px 4px;
  padding: 10px 16px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-text);
}
.demo-msg-skill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(255, 215, 0, 0.08);
  border: 1px solid rgba(255, 215, 0, 0.2);
  font-size: 11px;
  color: var(--c-gold);
  margin-bottom: 6px;
  animation: msgFadeIn 0.3s ease-out;
}
.demo-typing {
  align-self: flex-start;
  display: flex;
  gap: 4px;
  padding: 12px 18px;
  background: var(--c-surface);
  border-radius: 18px;
  border: 1px solid var(--c-border);
}
.demo-typing span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-text-dim);
  animation: typingDot 1.2s ease-in-out infinite;
}
.demo-typing span:nth-child(2) { animation-delay: 0.2s; }
.demo-typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingDot {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30% { transform: translateY(-6px); opacity: 1; }
}

/* Demo Sidebar */
.demo-sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.demo-sidebar-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}
.demo-capability {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 20px;
  border-radius: var(--radius);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  transition: all 0.5s;
  opacity: 0.5;
}
.demo-capability.active {
  opacity: 1;
  border-color: var(--c-primary);
  background: rgba(255, 51, 51, 0.04);
  box-shadow: 0 0 20px rgba(255, 51, 51, 0.08);
}
.demo-cap-icon { font-size: 28px; flex-shrink: 0; }
.demo-capability strong {
  display: block;
  font-size: 15px;
  margin-bottom: 2px;
}
.demo-capability span {
  font-size: 13px;
  color: var(--c-text-dim);
}
.demo-replay-btn {
  margin-top: 8px;
  padding: 12px 24px;
  border-radius: 10px;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  color: var(--c-text);
  font-size: 14px;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
}
.demo-replay-btn:hover {
  border-color: var(--c-primary);
  background: rgba(255, 51, 51, 0.05);
}

/* ═══════════════ Dashboard Preview ═══════════════ */
.dashboard-preview {
  margin-top: 48px;
}
.dashboard-frame {
  border-radius: var(--radius-lg);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}
.dashboard-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
}
.dashboard-title {
  font-size: 14px;
  font-weight: 700;
}
.dashboard-time {
  font-size: 12px;
  color: var(--c-text-dim);
  font-family: 'SF Mono', 'Fira Code', monospace;
}
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto auto;
  gap: 16px;
  padding: 20px;
}
.dash-card {
  padding: 18px;
  border-radius: var(--radius);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
}
.dash-card-label {
  font-size: 12px;
  color: var(--c-text-dim);
  margin-bottom: 8px;
}
.dash-card-num {
  font-size: 32px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 6px;
}
.dash-card-trend {
  font-size: 12px;
  color: var(--c-text-dimmer);
}
.dash-card-trend--up {
  color: var(--c-wechat);
}
.dash-chart {
  grid-column: 1 / 3;
  padding: 18px;
  border-radius: var(--radius);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
}
.dash-chart-title {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}
.dash-chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 80px;
}
.dash-bar {
  flex: 1;
  height: var(--h);
  background: linear-gradient(to top, var(--c-primary), rgba(255, 51, 51, 0.3));
  border-radius: 3px 3px 0 0;
  position: relative;
  transition: height 1s ease-out;
  animation: barGrow 1.2s ease-out backwards;
}
.dash-bar span {
  position: absolute;
  bottom: -18px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 9px;
  color: var(--c-text-dimmer);
}
@keyframes barGrow {
  from { height: 0%; }
}
.dash-feed {
  grid-column: 3 / 5;
  padding: 18px;
  border-radius: var(--radius);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  overflow: hidden;
}
.dash-feed-title {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
}
.dash-feed-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.dash-feed-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--c-text-dim);
  padding: 6px 0;
  border-bottom: 1px solid var(--c-border);
  animation: feedSlide 0.4s ease-out;
}
@keyframes feedSlide {
  from { opacity: 0; transform: translateX(-10px); }
}
.dash-feed-item:last-child { border-bottom: none; }
.dash-feed-badge {
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
  flex-shrink: 0;
}
.dash-feed-badge--reply { background: rgba(7, 193, 96, 0.1); color: var(--c-wechat); }
.dash-feed-badge--moment { background: rgba(139, 92, 246, 0.1); color: var(--c-purple); }
.dash-feed-badge--group { background: rgba(34, 211, 238, 0.1); color: var(--c-cyan); }
.dash-feed-badge--alert { background: rgba(255, 51, 51, 0.1); color: var(--c-primary); }

/* ═══════════════ Phase 2 Responsive ═══════════════ */
@media (max-width: 1024px) {
  .demo-layout {
    grid-template-columns: 1fr;
    gap: 40px;
    justify-items: center;
  }
  .dashboard-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .dash-chart, .dash-feed {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .demo-phone {
    width: 320px;
  }
  .demo-phone-screen {
    height: 500px;
  }
  .dashboard-grid {
    grid-template-columns: 1fr 1fr;
  }
  .dash-card-num {
    font-size: 24px;
  }
}

@media (max-width: 480px) {
  .demo-phone {
    width: 100%;
    max-width: 340px;
    border-radius: 30px;
  }
  .demo-phone-screen {
    height: 460px;
    border-radius: 20px;
  }
  .dashboard-grid {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 12px;
  }
  .dash-chart, .dash-feed {
    grid-column: auto;
  }
}

/* ═══════════════ Showcase Tabs ═══════════════ */
.showcase {
  background: var(--c-bg-2);
}
.showcase-tabs {
  display: flex;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 48px;
  padding: 6px;
  background: var(--c-surface);
  border-radius: 16px;
  border: 1px solid var(--c-border);
}
.showcase-tab {
  padding: 10px 20px;
  border-radius: 12px;
  border: none;
  background: transparent;
  color: var(--c-text-dim);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.showcase-tab:hover {
  color: var(--c-text);
  background: rgba(255, 255, 255, 0.04);
}
.showcase-tab--active {
  background: linear-gradient(135deg, var(--c-primary), #ff6633);
  color: #fff !important;
  box-shadow: 0 4px 16px var(--c-primary-glow);
}
.showcase-panels {
  position: relative;
}
.showcase-panel {
  display: none;
  animation: panelFadeIn 0.4s ease-out;
}
.showcase-panel--active {
  display: block;
}
@keyframes panelFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.showcase-panel-title {
  font-size: 24px;
  font-weight: 700;
  margin: 12px 0 8px;
  text-align: left;
}

[data-theme="light"] .showcase-tabs {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}
[data-theme="light"] .showcase-tab--active {
  box-shadow: 0 4px 16px rgba(204, 34, 34, 0.2);
}

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

@media (max-width: 768px) {
  .showcase-tabs {
    gap: 4px;
    padding: 4px;
  }
  .showcase-tab {
    padding: 8px 12px;
    font-size: 12px;
  }
  .wechat-grid--compact {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 480px) {
  .showcase-tab {
    padding: 6px 10px;
    font-size: 11px;
  }
}

/* ═══════════════ Social Proof ═══════════════ */
.social-proof {
  overflow: hidden;
}
.proof-stats {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 24px;
  text-align: center;
  margin-bottom: 56px;
  padding: 40px 32px;
  background: var(--c-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
}
.proof-stat-item { text-align: center; }
.proof-stat-num {
  display: inline;
  font-size: 42px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.proof-stat-plus {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.proof-stat-label {
  display: block;
  font-size: 13px;
  color: var(--c-text-dim);
  margin-top: 8px;
}

[data-theme="light"] .proof-stats {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  border-color: rgba(0, 0, 0, 0.08);
}

.proof-personas {
  margin-top: 56px;
  text-align: center;
}
.proof-personas-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 28px;
  color: var(--c-text);
}
.proof-persona-tags {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.proof-persona-tag {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  border-radius: var(--radius);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  text-align: left;
  transition: all var(--transition);
}
.proof-persona-tag:hover {
  border-color: var(--c-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 51, 51, 0.08);
}
.proof-persona-icon {
  font-size: 28px;
  flex-shrink: 0;
}
.proof-persona-tag strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 2px;
}
.proof-persona-tag span {
  font-size: 12px;
  color: var(--c-text-dim);
}

[data-theme="light"] .proof-persona-tag {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.08);
}

.cta-sponsor {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--c-border);
}
.cta-sponsor-text {
  font-size: 14px;
  color: var(--c-text-dimmer);
}

@media (max-width: 1024px) {
  .proof-stats {
    grid-template-columns: repeat(3, 1fr);
  }
  .proof-persona-tags {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .section--hero { padding: 100px 0; }
  .section--compact { padding: 56px 0; }
  .section--accent { padding: 80px 0; }
  .proof-stats {
    grid-template-columns: repeat(2, 1fr);
    padding: 24px 20px;
    gap: 16px;
  }
  .proof-stat-num { font-size: 32px; }
  .proof-persona-tags {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 480px) {
  .section--hero { padding: 72px 0; }
  .proof-stats {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    padding: 16px;
  }
  .proof-stat-num { font-size: 28px; }
}

/* ═══════════════════════════════════════════
   PHASE: User Segmentation — Pain Point Flip,
   Three Doors, Scenes, Why Us, ROI Calculator
   ═══════════════════════════════════════════ */

/* ═══════════════ Hero Pain Point Flip ═══════════════ */
.hero-phase {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  opacity: 0;
  transition: opacity 1s ease, transform 1s ease;
  pointer-events: none;
}
.hero-phase.active {
  opacity: 1;
  pointer-events: auto;
  position: relative;
}
.hero-phase.fade-out {
  opacity: 0;
  transform: translateY(-30px);
  position: absolute;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  min-height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pain-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.pain-stat {
  text-align: center;
  max-width: 260px;
}
.pain-num {
  display: inline;
  font-size: clamp(56px, 10vw, 96px);
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, #ff3333, #ff6633);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 30px rgba(255, 51, 51, 0.5));
}
.pain-pct {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 900;
  background: linear-gradient(135deg, #ff3333, #ff6633);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.pain-label {
  display: block;
  font-size: 16px;
  color: var(--c-text-dim);
  margin-top: 8px;
  line-height: 1.5;
}
.pain-source {
  display: block;
  font-size: 12px;
  color: var(--c-text-dimmer);
  margin-top: 4px;
  font-style: italic;
}
.pain-question {
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 700;
  color: var(--c-gold);
  text-shadow: 0 0 30px var(--c-gold-dim);
  animation: painPulse 2s ease-in-out infinite;
}
@keyframes painPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ═══════════════ Three Doors ═══════════════ */
.doors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.door-card {
  position: relative;
  height: 380px;
  perspective: 1000px;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}
.door-front, .door-back {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 40px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  justify-content: center;
  gap: 12px;
  backface-visibility: hidden;
  transition: transform 0.6s cubic-bezier(.4,0,.2,1);
  border: 1px solid var(--c-border);
}
.door-front {
  background: var(--c-surface);
}
.door-back {
  background: linear-gradient(135deg, var(--c-surface), rgba(255, 51, 51, 0.06));
  transform: rotateY(180deg);
}
.door-card:hover .door-front {
  transform: rotateY(-180deg);
}
.door-card:hover .door-back {
  transform: rotateY(0deg);
}
.door-icon {
  font-size: 56px;
  margin-bottom: 8px;
}
.door-title {
  font-size: 22px;
  font-weight: 800;
}
.door-pain {
  font-size: 15px;
  color: var(--c-text-dim);
  font-style: italic;
  line-height: 1.6;
}
.door-pain-data {
  font-size: 13px;
  color: var(--c-text-dimmer);
  margin-top: 8px;
  padding: 8px 16px;
  border-radius: 100px;
  background: rgba(255, 51, 51, 0.06);
  border: 1px solid rgba(255, 51, 51, 0.12);
}
.door-pain-num {
  font-weight: 900;
  color: var(--c-primary);
  font-size: 16px;
}
.door-back p {
  font-size: 14px;
  color: var(--c-text-dim);
  line-height: 1.7;
}
.door-action {
  margin-top: auto;
  padding: 10px 24px;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--c-primary), #ff6633);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transition: box-shadow 0.3s;
}
.door-card:hover .door-action {
  box-shadow: 0 4px 20px var(--c-primary-glow);
}

[data-theme="light"] .door-front {
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .door-back {
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
  border-color: rgba(0,0,0,0.08);
}

/* ═══════════════ Scene Sections ═══════════════ */
.scene-section { overflow: hidden; }

/* Timeline Story */
.scene-timeline {
  max-width: 800px;
  margin: 0 auto 64px;
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
}
.timeline-story-title {
  font-size: 20px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 28px;
}
.tl-row {
  display: grid;
  grid-template-columns: 60px 1fr 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--c-border);
  align-items: center;
}
.tl-row:last-child { border-bottom: none; }
.tl-time {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-gold);
  font-family: 'SF Mono', monospace;
}
.tl-before {
  font-size: 14px;
  color: var(--c-text-dim);
  padding: 8px 12px;
  border-radius: 8px;
  background: rgba(255, 51, 51, 0.04);
  border-left: 3px solid rgba(255, 51, 51, 0.3);
}
.tl-after {
  font-size: 14px;
  color: var(--c-text);
  padding: 8px 12px;
  border-radius: 8px;
  background: rgba(7, 193, 96, 0.04);
  border-left: 3px solid rgba(7, 193, 96, 0.3);
}
.tl-result {
  text-align: center;
  margin-top: 24px;
  font-size: 16px;
  color: var(--c-text-dim);
}
.tl-up {
  color: var(--c-wechat);
  font-weight: 700;
  font-size: 18px;
}

/* Scene Card Grid */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.scene-card {
  padding: 28px 22px;
  border-radius: var(--radius-lg);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.scene-card:hover {
  transform: translateY(-4px);
  border-color: var(--c-primary);
  box-shadow: 0 16px 48px rgba(255, 51, 51, 0.08);
}
.scene-card-icon {
  font-size: 36px;
}
.scene-card h4 {
  font-size: 17px;
  font-weight: 700;
}
.scene-card-pain {
  font-size: 12px;
  color: var(--c-text-dimmer);
  line-height: 1.5;
  padding: 4px 0;
  border-left: 2px solid rgba(255, 51, 51, 0.3);
  padding-left: 10px;
}
.scene-card-fix {
  font-size: 13px;
  color: var(--c-text-dim);
  line-height: 1.6;
}
.scene-card-emotion {
  margin-top: auto;
  font-size: 12px;
  font-weight: 600;
  color: var(--c-gold);
  padding: 6px 12px;
  border-radius: 100px;
  background: rgba(255, 215, 0, 0.06);
  border: 1px solid rgba(255, 215, 0, 0.12);
  display: inline-block;
  align-self: flex-start;
}

[data-theme="light"] .scene-card {
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .scene-card:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}
[data-theme="light"] .scene-timeline {
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
  border-color: rgba(0,0,0,0.08);
}

/* ═══════════════ Efficiency Dashboard ═══════════════ */
.efficiency-dashboard {
  max-width: 800px;
  margin: 0 auto 56px;
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.eff-row {
  display: grid;
  grid-template-columns: 120px 1fr 80px;
  gap: 16px;
  align-items: center;
}
.eff-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
}
.eff-bars {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.eff-bar {
  height: 24px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  font-size: 11px;
  font-weight: 600;
  width: var(--w);
  min-width: 60px;
  transition: width 1.5s cubic-bezier(.4,0,.2,1);
}
.eff-bar--before {
  background: rgba(255, 51, 51, 0.12);
  color: var(--c-primary);
  border: 1px solid rgba(255, 51, 51, 0.2);
}
.eff-bar--after {
  background: rgba(7, 193, 96, 0.12);
  color: var(--c-wechat);
  border: 1px solid rgba(7, 193, 96, 0.2);
}
.eff-bar span { white-space: nowrap; }
.eff-boost {
  font-size: 16px;
  font-weight: 900;
  color: var(--c-wechat);
  text-align: right;
}

[data-theme="light"] .efficiency-dashboard {
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
  border-color: rgba(0,0,0,0.08);
}

/* ═══════════════ ROI Calculator ═══════════════ */
.roi-calculator {
  max-width: 700px;
  margin: 0 auto 48px;
  padding: 36px;
  border-radius: var(--radius-lg);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  text-align: center;
}
.roi-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 24px;
}
.roi-inputs {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.roi-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
}
.roi-field label {
  font-size: 12px;
  color: var(--c-text-dim);
  font-weight: 600;
}
.roi-field select {
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid var(--c-border);
  background: var(--c-bg);
  color: var(--c-text);
  font-size: 14px;
  font-family: var(--font);
  cursor: pointer;
  min-width: 160px;
}
.roi-result {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}
.roi-item {
  padding: 20px;
  border-radius: var(--radius);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  min-width: 160px;
  text-align: center;
}
.roi-item--save {
  border-color: rgba(7, 193, 96, 0.3);
  background: rgba(7, 193, 96, 0.04);
}
.roi-item-label {
  font-size: 12px;
  color: var(--c-text-dim);
  margin-bottom: 8px;
}
.roi-item-num {
  font-size: 28px;
  font-weight: 900;
  line-height: 1;
}
.roi-item-num--old {
  color: var(--c-text-dimmer);
  text-decoration: line-through;
}
.roi-item-num--new {
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.roi-item-num--save {
  color: var(--c-wechat);
}
.roi-item-pct {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-wechat);
  margin-top: 4px;
}

[data-theme="light"] .roi-calculator {
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .roi-field select {
  background: #fff;
  border-color: rgba(0,0,0,0.12);
}

/* ROI Evidence Cards */
.roi-evidence {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 56px;
}
.roi-evidence-card {
  padding: 24px 16px;
  border-radius: var(--radius);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  text-align: center;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.roi-evidence-card:hover {
  transform: translateY(-4px);
  border-color: var(--c-gold);
  box-shadow: 0 12px 32px rgba(255, 215, 0, 0.08);
}
.roi-ev-num {
  font-size: 36px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--c-primary), var(--c-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.roi-ev-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--c-text);
}
.roi-ev-source {
  font-size: 11px;
  color: var(--c-text-dimmer);
  font-style: italic;
}

/* ═══════════════ Why Choose Us — Comparison ═══════════════ */
.why-us {
  background: var(--c-bg-2);
}
.compare-table-wrap {
  max-width: 900px;
  margin: 0 auto 48px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
  overflow: hidden;
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.compare-table th,
.compare-table td {
  padding: 16px 24px;
  text-align: left;
  border-bottom: 1px solid var(--c-border);
}
.compare-table thead th {
  background: var(--c-surface);
  font-weight: 700;
  font-size: 15px;
  position: sticky;
  top: 0;
}
.compare-table tbody tr {
  transition: background var(--transition);
}
.compare-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}
.compare-table tbody tr:last-child td { border-bottom: none; }
td.compare-us {
  color: var(--c-wechat);
  font-weight: 600;
}
th.compare-us {
  color: var(--c-primary);
}

[data-theme="light"] .compare-table thead th {
  background: var(--c-bg-2);
}
[data-theme="light"] .compare-table-wrap {
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
  border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .compare-table tbody tr:hover {
  background: rgba(0, 0, 0, 0.02);
}

/* Industry Authority Quotes */
.industry-quotes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto 40px;
}
.ind-quote {
  padding: 24px;
  border-radius: var(--radius);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-primary);
}
.ind-quote blockquote {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-text);
  margin-bottom: 8px;
}
.ind-quote cite {
  font-size: 12px;
  color: var(--c-text-dimmer);
  font-style: italic;
}
.why-us-cta {
  text-align: center;
  font-size: 18px;
  font-weight: 600;
  color: var(--c-text);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.btn--inline {
  padding: 10px 24px;
  font-size: 14px;
}

[data-theme="light"] .ind-quote {
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  border-color: rgba(0,0,0,0.08);
  border-left-color: var(--c-primary);
}

/* ═══════════════ Enterprise Button Style ═══════════════ */
.btn--enterprise {
  border-color: var(--c-gold);
  color: var(--c-gold);
}
.btn--enterprise:hover {
  background: rgba(255, 215, 0, 0.08);
  border-color: var(--c-gold);
  box-shadow: 0 0 20px var(--c-gold-dim);
}

/* ═══════════════ Responsive: New Sections ═══════════════ */
@media (max-width: 1024px) {
  .doors-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .roi-evidence { grid-template-columns: repeat(2, 1fr); }
  .industry-quotes { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .hero-content { min-height: auto; }
  .hero-phase { padding: 100px 20px 60px; }
  .pain-stats { gap: 24px; flex-direction: column; align-items: center; }
  .pain-num { font-size: 56px; }
  .pain-pct { font-size: 36px; }
  .pain-question { font-size: 24px; }
  .doors-grid { grid-template-columns: 1fr; gap: 16px; }
  .door-card { height: 320px; }
  .scene-grid { grid-template-columns: 1fr; }
  .tl-row { grid-template-columns: 50px 1fr; gap: 8px; }
  .tl-before { grid-column: 2; }
  .tl-after { grid-column: 2; }
  .eff-row { grid-template-columns: 1fr; gap: 8px; }
  .eff-boost { text-align: left; }
  .roi-evidence { grid-template-columns: 1fr 1fr; }
  .roi-result { flex-direction: column; align-items: center; }
  .roi-item { width: 100%; }
}
@media (max-width: 480px) {
  .door-card { height: 300px; }
  .door-icon { font-size: 40px; }
  .door-title { font-size: 18px; }
  .scene-card { padding: 20px 16px; }
  .roi-evidence { grid-template-columns: 1fr; }
}