/* ============================================
   武汉平面星图 - 原生版样式表
   复刻 Next.js + Tailwind + Framer Motion 版本
   ============================================ */

/* ===== CSS 变量（色彩系统） ===== */
:root {
  --radius: 0.625rem;
  --bg: oklch(0.985 0.002 180);
  --fg: oklch(0.18 0.02 200);
  --card: #ffffff;
  --primary: oklch(0.62 0.13 178);
  --primary-dark: oklch(0.45 0.1 178);
  --primary-foreground: oklch(0.99 0 0);
  --accent-gold: oklch(0.78 0.15 80);
  --cosmic: oklch(0.15 0.03 230);
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --slate-950: #020617;
  --teal-50: #f0fdfa;
  --teal-100: #ccfbf1;
  --teal-200: #99f6e4;
  --teal-300: #5eead4;
  --teal-400: #2dd4bf;
  --teal-500: #14b8a6;
  --teal-600: #0d9488;
  --teal-700: #0f766e;
  --emerald-400: #34d399;
  --emerald-500: #10b981;
  --emerald-600: #059669;
  --emerald-700: #047857;
  --emerald-800: #065f46;
  --amber-400: #fbbf24;
  --amber-500: #f59e0b;
  --amber-600: #d97706;
  --orange-500: #f97316;
  --rose-400: #fb7185;
  --rose-500: #f43f5e;
  --cyan-400: #22d3ee;
  --cyan-500: #06b6d4;
  --cyan-600: #0891b2;
  --violet-400: #a78bfa;
  --violet-500: #8b5cf6;
  --purple-500: #a855f7;
  --sky-400: #38bdf8;
  --sky-500: #0ea5e9;
  --lime-400: #a3e635;
  --lime-500: #84cc16;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 5rem; -webkit-text-size-adjust: 100%; overflow-x: hidden; }
body {
  font-family: var(--font-sans, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  max-width: 100vw;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font: inherit; }
ul { list-style: none; }
svg { display: block; }

/* ===== 自定义滚动条 ===== */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: oklch(0.96 0.005 180); }
::-webkit-scrollbar-thumb { background: oklch(0.7 0.1 178); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: oklch(0.55 0.13 178); }

/* ===== 容器 ===== */
.container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 1rem; }
@media (min-width: 640px) { .container { padding: 0 1.5rem; } }
@media (min-width: 1024px) { .container { padding: 0 2rem; } }

/* ===== 动画 Keyframes ===== */
@keyframes twinkle {
  0%, 100% { opacity: 0.2; }
  50% { opacity: 1; }
}
@keyframes float-slow {
  0%, 100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(-20px) translateX(10px); }
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px rgba(20,184,166,0.3); }
  50% { box-shadow: 0 0 40px rgba(20,184,166,0.6); }
}
@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
@keyframes spin-slow { from { transform: rotate(0); } to { transform: rotate(360deg); } }
@keyframes spin-reverse { from { transform: rotate(360deg); } to { transform: rotate(0); } }
@keyframes orbit {
  from { transform: rotate(0deg) translateX(50px) rotate(0deg); }
  to { transform: rotate(360deg) translateX(50px) rotate(-360deg); }
}
@keyframes orbit-reverse {
  from { transform: rotate(0deg) translateX(50px) rotate(0deg); }
  to { transform: rotate(-360deg) translateX(50px) rotate(360deg); }
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ===== Reveal 动画（替代 Framer Motion whileInView） ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.reveal-10 { transform: translateY(10px); }
.reveal.reveal-16 { transform: translateY(16px); }
.reveal.reveal-20 { transform: translateY(20px); }
.reveal.reveal-24 { transform: translateY(24px); }
.reveal.reveal-30 { transform: translateY(30px); }
.reveal.reveal-left { transform: translateX(-30px); }
.reveal.reveal-right { transform: translateX(30px); }
.reveal.reveal-scale { transform: scale(0.9); }
.reveal.visible { opacity: 1; transform: translate(0,0) scale(1); }

/* ===== 通用工具类 ===== */
.gradient-text {
  background: linear-gradient(135deg, oklch(0.62 0.13 178), oklch(0.7 0.16 162), oklch(0.78 0.15 80));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% 200%;
  animation: gradient-shift 6s ease infinite;
}
.cosmic-bg {
  background: radial-gradient(ellipse at top, oklch(0.18 0.05 230), oklch(0.1 0.03 230) 60%, oklch(0.08 0.02 230));
}
.grid-pattern {
  background-image:
    linear-gradient(rgba(20,184,166,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20,184,166,0.05) 1px, transparent 1px);
  background-size: 50px 50px;
}
.glass-card {
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(20,184,166,0.15);
}
.glass-card-dark {
  background: rgba(15,23,42,0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(20,184,166,0.2);
}
.card-lift { transition: transform 0.3s ease, box-shadow 0.3s ease; }
.card-lift:hover { transform: translateY(-6px); box-shadow: 0 20px 40px rgba(20,184,166,0.15); }
.section-divider { background: linear-gradient(90deg, transparent, rgba(20,184,166,0.5), transparent); height: 1px; }

/* 星空点 */
.star-dot { position: absolute; background: white; border-radius: 50%; pointer-events: none; }
.animate-twinkle { animation: twinkle 3s ease-in-out infinite; }
.animate-float-slow { animation: float-slow 8s ease-in-out infinite; }
.animate-pulse-glow { animation: pulse-glow 3s ease-in-out infinite; }
.animate-pulse-dot { animation: pulse-dot 2s ease-in-out infinite; }
.animate-bounce { animation: bounce 1s ease-in-out infinite; }

/* ===== 导航栏 ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  transition: all 0.3s ease;
  padding: 1rem 0;
}
.navbar.scrolled {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(20,184,166,0.1);
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  padding: 0.5rem 0;
}
.navbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.nav-logo { display: flex; align-items: center; gap: 0.625rem; cursor: pointer; background: none; border: none; padding: 0; }
.nav-logo-icon {
  position: relative; display: flex; align-items: center; justify-content: center;
  width: 2.5rem; height: 2.5rem; border-radius: 0.75rem;
  background: linear-gradient(135deg, var(--teal-400), var(--emerald-500));
  transition: background 0.3s;
}
.navbar.scrolled .nav-logo-icon { background: linear-gradient(135deg, var(--teal-500), var(--emerald-600)); }
.nav-logo-icon svg { width: 1.25rem; height: 1.25rem; color: white; }
.nav-logo-text { display: flex; flex-direction: column; align-items: flex-start; line-height: 1; }
.nav-logo-name { font-size: 1.125rem; font-weight: 700; letter-spacing: -0.025em; color: white; transition: color 0.3s; }
.navbar.scrolled .nav-logo-name { color: var(--slate-900); }
.nav-logo-sub { font-size: 0.625rem; letter-spacing: 0.2em; color: var(--teal-300); transition: color 0.3s; }
.navbar.scrolled .nav-logo-sub { color: var(--teal-600); }

.nav-menu { display: none; align-items: center; gap: 0.25rem; }
@media (min-width: 1024px) { .nav-menu { display: flex; } }
.nav-link {
  position: relative; padding: 0.5rem 0.875rem;
  font-size: 0.875rem; font-weight: 500; border-radius: 0.5rem;
  transition: all 0.2s; color: rgba(241,245,249,0.8);
}
.navbar.scrolled .nav-link { color: var(--slate-600); }
.nav-link:hover { color: white; }
.navbar.scrolled .nav-link:hover { color: var(--teal-700); }
.nav-link.active { color: white; }
.navbar.scrolled .nav-link.active { color: var(--teal-700); }
.nav-link.active::after {
  content: ''; position: absolute; left: 0.5rem; right: 0.5rem; bottom: -0.125rem;
  height: 2px; border-radius: 9999px;
  background: linear-gradient(90deg, var(--teal-500), var(--emerald-400));
}

.nav-actions { display: flex; align-items: center; gap: 0.75rem; }
.nav-cta {
  display: none; align-items: center; gap: 0.5rem;
  padding: 0.375rem 1rem; font-size: 0.875rem; font-weight: 500; border-radius: 0.5rem;
  background: linear-gradient(135deg, var(--teal-500), var(--emerald-600));
  color: white; box-shadow: 0 10px 15px -3px rgba(20,184,166,0.2);
  transition: all 0.2s;
}
.nav-cta:hover { background: linear-gradient(135deg, var(--teal-600), var(--emerald-700)); }
@media (min-width: 640px) { .nav-cta { display: inline-flex; } }
.nav-cta svg { width: 0.875rem; height: 0.875rem; }

.nav-toggle {
  display: flex; align-items: center; justify-content: center;
  padding: 0.5rem; border-radius: 0.5rem; transition: all 0.2s;
  color: white;
}
.navbar.scrolled .nav-toggle { color: var(--slate-700); }
.nav-toggle:hover { background: rgba(255,255,255,0.1); }
.navbar.scrolled .nav-toggle:hover { background: var(--slate-100); }
@media (min-width: 1024px) { .nav-toggle { display: none; } }
.nav-toggle svg { width: 1.25rem; height: 1.25rem; }

/* ===== 移动端菜单 ===== */
.mobile-menu-overlay {
  position: fixed; inset: 0; z-index: 40; display: none;
}
.mobile-menu-overlay.open { display: block; }
@media (min-width: 1024px) { .mobile-menu-overlay { display: none !important; } }
.mobile-menu-backdrop {
  position: absolute; inset: 0;
  background: rgba(15,23,42,0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.mobile-menu-panel {
  position: absolute; right: 0; top: 0; height: 100%;
  width: 18rem; max-width: 80vw;
  background: white; box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
  padding: 1.5rem; padding-top: 6rem;
  display: flex; flex-direction: column; gap: 0.25rem;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}
.mobile-menu-overlay.open .mobile-menu-panel { transform: translateX(0); }
.mobile-menu-link {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.75rem 1rem; border-radius: 0.5rem;
  color: var(--slate-700); font-weight: 500; text-align: left;
  transition: all 0.2s;
}
.mobile-menu-link:hover { background: var(--teal-50); color: var(--teal-700); }
.mobile-menu-link span:last-child { font-size: 0.75rem; color: var(--slate-400); }
.mobile-menu-cta {
  width: 100%; margin-top: 1.5rem;
  display: flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.5rem 1rem; border-radius: 0.5rem;
  background: linear-gradient(135deg, var(--teal-500), var(--emerald-600));
  color: white; font-weight: 500;
}
.mobile-menu-cta svg { width: 1rem; height: 1rem; }
.mobile-menu-contact { margin-top: 1rem; padding-top: 1.5rem; border-top: 1px solid var(--slate-100); text-align: center; }
.mobile-menu-contact p { font-size: 0.875rem; color: var(--slate-500); }
.mobile-menu-contact .phone { margin-top: 0.25rem; font-weight: 600; color: var(--teal-700); }

/* ===== 通用 Section ===== */
.section { padding: 5rem 0; position: relative; overflow: hidden; }
@media (min-width: 640px) { .section { padding: 7rem 0; } }

/* ===== Section Header ===== */
.section-header { display: flex; flex-direction: column; gap: 1rem; align-items: center; text-align: center; }
.section-header.align-left { align-items: flex-start; text-align: left; }
.section-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  border-radius: 9999px; border: 1px solid rgba(20,184,166,0.2);
  background: rgba(20,184,166,0.05);
  padding: 0.375rem 1rem;
  font-size: 0.75rem; font-weight: 500; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--teal-700);
}
.section-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--teal-500); }
.section-badge.light { border-color: rgba(45,212,191,0.3); background: rgba(45,212,191,0.1); color: var(--teal-300); }
.section-subtitle { font-size: 0.875rem; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: var(--teal-600); }
.section-subtitle.light { color: rgba(94,234,212,0.8); }
.section-title { font-size: 1.875rem; font-weight: 700; letter-spacing: -0.025em; line-height: 1.1; color: var(--slate-900); }
.section-title.light { color: white; }
@media (min-width: 640px) { .section-title { font-size: 2.25rem; line-height: 1.1; } }
@media (min-width: 768px) { .section-title { font-size: 3rem; line-height: 1; } }
.section-desc { max-width: 48rem; font-size: 1rem; line-height: 1.625; color: var(--slate-600); }
@media (min-width: 640px) { .section-desc { font-size: 1.125rem; } }
.section-desc.light { color: var(--slate-300); }
.section-divider-line { height: 2px; width: 5rem; background: linear-gradient(90deg, var(--teal-500), var(--emerald-400), var(--amber-400)); }
.section-header.align-left .section-divider-line { width: 4rem; }

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  overflow: hidden;
  background: radial-gradient(ellipse at top, oklch(0.18 0.05 230), oklch(0.1 0.03 230) 60%, oklch(0.08 0.02 230));
}
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.4; }
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(2,6,23,0.7), rgba(2,6,23,0.5), rgba(2,6,23,0.9));
}
.hero-bg::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to right, rgba(2,6,23,0.8), transparent, rgba(2,6,23,0.4));
  z-index: 1;
}
.hero-orb-1 { position: absolute; top: 25%; left: -8rem; width: 24rem; height: 24rem; border-radius: 50%; background: rgba(20,184,166,0.2); filter: blur(120px); animation: float-slow 8s ease-in-out infinite; }
.hero-orb-2 { position: absolute; bottom: 25%; right: -8rem; width: 24rem; height: 24rem; border-radius: 50%; background: rgba(245,158,11,0.15); filter: blur(120px); animation: float-slow 8s ease-in-out infinite 2s; }
.hero-grid { position: absolute; inset: 0; opacity: 0.3;
  background-image: linear-gradient(rgba(20,184,166,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(20,184,166,0.05) 1px, transparent 1px);
  background-size: 50px 50px;
}
.hero-content { position: relative; z-index: 10; width: 100%; }
.hero-grid-2 { display: grid; gap: 2rem; align-items: center; }
@media (min-width: 1024px) { .hero-grid-2 { grid-template-columns: 7fr 5fr; } }
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  border-radius: 9999px; border: 1px solid rgba(45,212,191,0.3);
  background: rgba(45,212,191,0.1);
  padding: 0.375rem 1rem; margin-bottom: 1.5rem;
}
.hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--teal-400); }
.hero-badge span { font-size: 0.75rem; font-weight: 500; letter-spacing: 0.05em; text-transform: uppercase; color: var(--teal-300); }
.hero h1 { font-size: 2.25rem; font-weight: 700; letter-spacing: -0.025em; color: white; line-height: 1.1; }
@media (min-width: 640px) { .hero h1 { font-size: 3rem; } }
@media (min-width: 768px) { .hero h1 { font-size: 3.75rem; } }
@media (min-width: 1024px) { .hero h1 { font-size: 4.5rem; } }
.hero h1 .gradient-text { display: block; margin-top: 0.5rem; }
.hero-desc { margin-top: 1.5rem; font-size: 1.125rem; line-height: 1.625; color: var(--slate-300); max-width: 42rem; }
@media (min-width: 640px) { .hero-desc { font-size: 1.25rem; } }
.hero-buttons { margin-top: 2rem; display: flex; flex-wrap: wrap; gap: 1rem; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; font-weight: 500; border-radius: 0.5rem; transition: all 0.2s; white-space: nowrap; cursor: pointer; border: none; }
.btn-lg { padding: 0.625rem 1.5rem; font-size: 1rem; }
.btn-primary { background: linear-gradient(135deg, var(--teal-500), var(--emerald-600)); color: white; box-shadow: 0 20px 25px -5px rgba(20,184,166,0.3); }
.btn-primary:hover { background: linear-gradient(135deg, var(--teal-600), var(--emerald-700)); }
.btn-primary svg { width: 1rem; height: 1rem; transition: transform 0.2s; }
.btn-primary:hover svg { transform: translateX(4px); }
.btn-outline { background: rgba(255,255,255,0.05); color: white; border: 1px solid rgba(255,255,255,0.2); backdrop-filter: blur(4px); }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.4); }
.hero-pills { margin-top: 2.5rem; display: flex; flex-wrap: wrap; gap: 0.75rem; }
.hero-pill { display: flex; align-items: center; gap: 0.5rem; border-radius: 9999px; border: 1px solid rgba(255,255,255,0.1); background: rgba(255,255,255,0.05); backdrop-filter: blur(4px); padding: 0.5rem 1rem; font-size: 0.875rem; color: var(--slate-200); }
.hero-pill svg { width: 0.875rem; height: 0.875rem; color: var(--teal-400); }

/* Hero 轨道动画 */
.hero-visual { display: none; }
@media (min-width: 1024px) { .hero-visual { display: block; } }
.hero-orbit-container { position: relative; aspect-ratio: 1; max-width: 28rem; margin: 0 auto; }
.hero-orbit-ring { position: absolute; border-radius: 50%; border: 1px solid rgba(45,212,191,0.2); }
.hero-orbit-ring-1 { inset: 0; animation: spin-slow 30s linear infinite; }
.hero-orbit-ring-2 { inset: 2rem; animation: spin-reverse 25s linear infinite; border-color: rgba(52,211,153,0.2); }
.hero-orbit-ring-3 { inset: 4rem; animation: spin-slow 20s linear infinite; border-color: rgba(251,191,36,0.2); }
.hero-orbit-center {
  position: absolute; inset: 25%; border-radius: 50%;
  background: linear-gradient(135deg, rgba(20,184,166,0.2), rgba(5,150,105,0.2));
  backdrop-filter: blur(16px); border: 1px solid rgba(45,212,191,0.3);
  display: flex; align-items: center; justify-content: center;
  animation: pulse-glow 3s ease-in-out infinite;
}
.hero-orbit-center-text { text-align: center; }
.hero-orbit-center-text .big { font-size: 3rem; font-weight: 700; }
.hero-orbit-center-text .small { font-size: 0.75rem; color: var(--teal-300); letter-spacing: 0.3em; margin-top: 0.5rem; }
.hero-orbit-dot { position: absolute; top: 50%; left: 0; border-radius: 50%; }
.hero-orbit-dot-1 { width: 12px; height: 12px; background: var(--teal-400); box-shadow: 0 0 20px rgba(45,212,191,0.8); animation: orbit 15s linear infinite; }
.hero-orbit-dot-2 { width: 8px; height: 8px; background: var(--amber-400); box-shadow: 0 0 15px rgba(251,191,36,0.8); animation: orbit-reverse 20s linear infinite; }

/* Hero 统计栏 */
.hero-stats { margin-top: 3rem; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
@media (min-width: 1024px) { .hero-stats { grid-template-columns: repeat(4, 1fr); margin-top: 5rem; } }
.hero-stat { border-radius: 1rem; padding: 1.25rem; text-align: center; }
.hero-stat-value { font-size: 1.875rem; font-weight: 700; }
@media (min-width: 640px) { .hero-stat-value { font-size: 2.25rem; } }
.hero-stat-label { margin-top: 0.375rem; font-size: 0.875rem; color: var(--slate-300); }

/* Hero 滚动指示器 */
.hero-scroll { position: absolute; bottom: 1.5rem; left: 50%; transform: translateX(-50%); color: rgba(255,255,255,0.6); display: flex; flex-direction: column; align-items: center; gap: 0.5rem; background: none; border: none; cursor: pointer; transition: color 0.2s; }
.hero-scroll:hover { color: white; }
.hero-scroll span { font-size: 0.75rem; letter-spacing: 0.1em; }
.hero-scroll svg { width: 1.25rem; height: 1.25rem; }

/* ===== About 板块 ===== */
.about { background: var(--bg); }
.about-orb-1 { position: absolute; top: 0; right: 0; width: 24rem; height: 24rem; border-radius: 50%; background: rgba(20,184,166,0.05); filter: blur(100px); }
.about-orb-2 { position: absolute; bottom: 0; left: 0; width: 24rem; height: 24rem; border-radius: 50%; background: rgba(245,158,11,0.05); filter: blur(100px); }
.philosophy-grid { margin-top: 4rem; display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .philosophy-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .philosophy-grid { grid-template-columns: repeat(4, 1fr); } }
.philosophy-card { position: relative; border-radius: 1rem; border: 1px solid rgba(20,184,166,0.1); background: white; padding: 1.5rem; overflow: hidden; }
.philosophy-card-bg { position: absolute; top: -1.5rem; right: -1.5rem; width: 6rem; height: 6rem; border-radius: 50%; background: linear-gradient(135deg, rgba(20,184,166,0.1), rgba(16,185,129,0.05)); transition: transform 0.5s; }
.philosophy-card:hover .philosophy-card-bg { transform: scale(1.5); }
.philosophy-icon { position: relative; display: flex; align-items: center; justify-content: center; width: 3rem; height: 3rem; border-radius: 0.75rem; background: linear-gradient(135deg, var(--teal-500), var(--emerald-600)); color: white; box-shadow: 0 10px 15px -3px rgba(20,184,166,0.2); }
.philosophy-icon svg { width: 1.5rem; height: 1.5rem; }
.philosophy-card h3 { position: relative; margin-top: 1rem; font-size: 1.125rem; font-weight: 700; color: var(--slate-900); }
.philosophy-card p { position: relative; margin-top: 0.5rem; font-size: 0.875rem; color: var(--slate-600); line-height: 1.625; }

/* About 介绍区 */
.about-intro { margin-top: 5rem; display: grid; gap: 2.5rem; align-items: center; }
@media (min-width: 1024px) { .about-intro { grid-template-columns: 1fr 1fr; } }
.about-intro-img-wrap { position: relative; }
.about-intro-img-glow { position: absolute; inset: -1rem; border-radius: 1.5rem; background: linear-gradient(135deg, rgba(20,184,166,0.1), rgba(245,158,11,0.1)); filter: blur(2rem); }
.about-intro-img { position: relative; border-radius: 1rem; overflow: hidden; border: 1px solid rgba(20,184,166,0.2); box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25); }
.about-intro-img img { width: 100%; height: auto; }
.about-intro-img-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(2,6,23,0.4), transparent); }
.about-intro-caption { position: absolute; bottom: 1rem; left: 1rem; right: 1rem; }
.about-intro-caption-box { padding: 1rem; border-radius: 0.75rem; background: rgba(15,23,42,0.6); backdrop-filter: blur(12px); border: 1px solid rgba(45,212,191,0.2); }
.about-intro-caption-box p { font-size: 0.875rem; color: var(--slate-200); line-height: 1.625; }
.about-intro-caption-box strong { color: var(--teal-300); }
.about-intro-text h3, .about-intro > div:last-child h3 { font-size: 1.5rem; font-weight: 700; color: var(--slate-900); margin-bottom: 1rem; }
@media (min-width: 640px) { .about-intro-text h3, .about-intro > div:last-child h3 { font-size: 1.875rem; } }
.about-intro-text p, .about-intro > div:last-child > p { color: var(--slate-600); line-height: 1.625; }
.about-intro > div:last-child > p:nth-of-type(1) { margin-bottom: 1rem; }
.about-intro > div:last-child > p:nth-of-type(2) { margin-bottom: 1.5rem; }
.about-intro-text p:nth-of-type(1) { margin-bottom: 1rem; }
.about-intro-text p:nth-of-type(2) { margin-bottom: 1.5rem; }
.clients-box { border-radius: 0.75rem; border: 1px solid rgba(20,184,166,0.1); background: rgba(240,253,250,0.5); padding: 1.25rem; }
.clients-box-label { font-size: 0.75rem; font-weight: 500; color: var(--teal-700); letter-spacing: 0.05em; text-transform: uppercase; margin-bottom: 0.75rem; }
.clients-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.client-tag { display: inline-flex; align-items: center; border-radius: 0.5rem; background: white; border: 1px solid rgba(20,184,166,0.15); padding: 0.375rem 0.75rem; font-size: 0.875rem; font-weight: 500; color: var(--slate-700); }
.clients-note { margin-top: 0.75rem; font-size: 0.75rem; color: var(--slate-500); }

/* 时间线 */
.timeline-section { margin-top: 6rem; }
.timeline-title { font-size: 1.5rem; font-weight: 700; text-align: center; color: var(--slate-900); margin-bottom: 3rem; }
.timeline { position: relative; }
.timeline-line { position: absolute; left: 12.5%; right: 12.5%; top: 2rem; height: 2px; background: linear-gradient(90deg, transparent, rgba(20,184,166,0.4), transparent); }
@media (max-width: 1023px) { .timeline-line { display: none; } }
.timeline-grid { display: grid; gap: 2rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .timeline-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .timeline-grid { grid-template-columns: repeat(4, 1fr); } }
.timeline-item { position: relative; display: flex; flex-direction: column; align-items: center; text-align: center; }
.timeline-circle { position: relative; display: flex; align-items: center; justify-content: center; width: 4rem; height: 4rem; border-radius: 50%; background: linear-gradient(135deg, var(--teal-500), var(--emerald-600)); color: white; box-shadow: 0 10px 15px -3px rgba(20,184,166,0.3); margin-bottom: 1rem; z-index: 1; }
.timeline-circle span { font-size: 0.75rem; font-weight: 700; }
.timeline-item h4 { font-size: 1rem; font-weight: 700; color: var(--slate-900); margin-bottom: 0.5rem; }
.timeline-item p { font-size: 0.875rem; color: var(--slate-600); line-height: 1.625; }

/* ===== Business 板块 ===== */
.business { background: linear-gradient(to bottom, var(--slate-50), white); }
.business .grid-pattern { position: absolute; inset: 0; opacity: 0.3; }
.business-grid { margin-top: 4rem; display: grid; gap: 1.25rem; grid-template-columns: 1fr; position: relative; }
@media (min-width: 640px) { .business-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .business-grid { grid-template-columns: repeat(4, 1fr); } }
.business-card { position: relative; border-radius: 1rem; background: white; border: 1px solid rgba(226,232,240,0.8); padding: 1.5rem; overflow: hidden; }
.business-card-top { position: absolute; inset: 0 0 auto 0; height: 4px; background: linear-gradient(90deg, var(--teal-500), var(--emerald-400), var(--amber-400)); transform: scaleX(0); transform-origin: left; transition: transform 0.3s; }
.business-card:hover .business-card-top { transform: scaleX(1); }
.business-card-glow { position: absolute; bottom: -3rem; right: -3rem; width: 8rem; height: 8rem; border-radius: 50%; background: rgba(20,184,166,0.05); transition: background 0.5s; }
.business-card:hover .business-card-glow { background: rgba(20,184,166,0.1); }
.business-card-icon { display: flex; align-items: center; justify-content: center; width: 3.5rem; height: 3.5rem; border-radius: 1rem; background: linear-gradient(135deg, #f0fdfa, #ecfdf5); border: 1px solid rgba(20,184,166,0.1); color: var(--teal-600); transition: all 0.3s; }
.business-card:hover .business-card-icon { background: linear-gradient(135deg, var(--teal-500), var(--emerald-600)); color: white; }
.business-card-icon svg { width: 1.75rem; height: 1.75rem; }
.business-card-num { display: flex; align-items: center; gap: 0.5rem; margin-top: 1rem; }
.business-card-num span { font-size: 0.75rem; font-family: "Geist Mono", "SF Mono", "Monaco", "Cascadia Code", "Roboto Mono", Consolas, monospace; color: rgba(13,148,136,0.6); letter-spacing: 0; }
.business-card h3 { font-size: 1.125rem; font-weight: 700; color: var(--slate-900); }
.business-card-desc { margin-top: 0.5rem; font-size: 0.875rem; color: var(--slate-600); line-height: 1.625; min-height: 60px; }
.business-card-features { margin-top: 1rem; display: flex; flex-direction: column; gap: 0.375rem; }
.business-card-feature { display: flex; align-items: center; gap: 0.5rem; font-size: 0.75rem; color: var(--slate-600); }
.business-card-feature svg { width: 0.875rem; height: 0.875rem; color: var(--teal-500); flex-shrink: 0; }

/* Business banner */
.business-banner { margin-top: 3rem; position: relative; border-radius: 1.5rem; overflow: hidden; background: linear-gradient(135deg, var(--slate-900), var(--slate-800), var(--slate-900)); padding: 2rem; }
@media (min-width: 640px) { .business-banner { padding: 3rem; } }
.business-banner-grid { position: relative; display: grid; gap: 2rem; align-items: center; }
@media (min-width: 1024px) { .business-banner-grid { grid-template-columns: 1fr 1fr; } }
.business-banner h3 { font-size: 1.5rem; font-weight: 700; color: white; }
@media (min-width: 640px) { .business-banner h3 { font-size: 1.875rem; } }
.business-banner p { margin-top: 1rem; color: var(--slate-300); line-height: 1.625; }
.business-banner-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.business-banner-stat { border-radius: 0.75rem; padding: 1rem; text-align: center; }
.business-banner-stat-value { font-size: 1.25rem; font-weight: 700; }
.business-banner-stat-label { margin-top: 0.25rem; font-size: 0.75rem; color: var(--slate-400); }

/* ===== Scale 板块 (深色) ===== */
.scale { background: var(--slate-950); }
.scale-stats { margin-top: 3rem; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
@media (min-width: 1024px) { .scale-stats { grid-template-columns: repeat(4, 1fr); } }
.scale-stat { border-radius: 1rem; padding: 1.5rem; text-align: center; }
.scale-stat-icon { display: inline-flex; align-items: center; justify-content: center; width: 3rem; height: 3rem; border-radius: 0.75rem; background: rgba(20,184,166,0.2); color: var(--teal-300); margin-bottom: 0.75rem; }
.scale-stat-icon svg { width: 1.5rem; height: 1.5rem; }
.scale-stat-value { font-size: 1.875rem; font-weight: 700; }
.scale-stat-label { margin-top: 0.25rem; font-size: 0.875rem; color: var(--slate-400); }
.scale-grid { margin-top: 4rem; display: grid; gap: 1.5rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .scale-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .scale-grid { grid-template-columns: repeat(3, 1fr); } }
.scale-card { position: relative; border-radius: 1rem; overflow: hidden; }
.scale-card.hq { background: linear-gradient(135deg, rgba(20,184,166,0.15), rgba(5,150,105,0.1)); border: 1px solid rgba(45,212,191,0.4); }
.scale-card:not(.hq) { background: rgba(15,23,42,0.6); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.1); }
.scale-card-badge { position: absolute; top: 0; right: 0; background: linear-gradient(to left, var(--amber-500), var(--amber-400)); color: var(--slate-900); font-size: 0.75rem; font-weight: 700; padding: 0.25rem 0.75rem; border-bottom-left-radius: 0.5rem; display: flex; align-items: center; gap: 0.25rem; }
.scale-card-badge svg { width: 0.75rem; height: 0.75rem; }
.scale-card-body { padding: 1.5rem; }
.scale-card-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 0.75rem; margin-bottom: 1rem; }
.scale-card-icon { display: flex; align-items: center; justify-content: center; width: 2.75rem; height: 2.75rem; border-radius: 0.75rem; background: rgba(20,184,166,0.2); color: var(--teal-300); flex-shrink: 0; }
.scale-card-icon svg { width: 1.25rem; height: 1.25rem; }
.scale-card-year { display: inline-flex; align-items: center; gap: 0.25rem; border-radius: 9999px; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); padding: 0.25rem 0.625rem; font-size: 0.75rem; color: var(--slate-300); }
.scale-card-year svg { width: 0.75rem; height: 0.75rem; }
.scale-card h3 { font-size: 1rem; font-weight: 700; color: white; line-height: 1.5; min-height: 3rem; }
.scale-card-role { margin-top: 0.75rem; display: inline-flex; align-items: center; border-radius: 0.375rem; background: rgba(20,184,166,0.1); border: 1px solid rgba(45,212,191,0.2); padding: 0.25rem 0.625rem; font-size: 0.75rem; font-weight: 500; color: var(--teal-300); }
.scale-card-info { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid rgba(255,255,255,0.1); display: flex; flex-direction: column; gap: 0.5rem; }
.scale-card-info-row { display: flex; align-items: center; gap: 0.5rem; font-size: 0.875rem; color: var(--slate-300); }
.scale-card-info-row svg { width: 1rem; height: 1rem; color: var(--teal-400); flex-shrink: 0; }
.scale-note { margin-top: 3rem; text-align: center; }
.scale-note p { font-size: 0.875rem; color: var(--slate-400); max-width: 48rem; margin: 0 auto; }

/* ===== Projects 板块 ===== */
.projects { background: var(--bg); }
.projects-feature { margin-top: 4rem; position: relative; border-radius: 1.5rem; overflow: hidden; border: 1px solid rgba(20,184,166,0.2); box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25); }
.projects-feature img { width: 100%; height: auto; }
.projects-feature-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(2,6,23,0.8), rgba(2,6,23,0.2), transparent); }
.projects-feature-content { position: absolute; bottom: 0; left: 0; right: 0; padding: 1.5rem; }
@media (min-width: 640px) { .projects-feature-content { padding: 2.5rem; } }
.projects-feature-grid { display: grid; gap: 1.5rem; }
@media (min-width: 640px) { .projects-feature-grid { grid-template-columns: repeat(3, 1fr); } }
.projects-feature-item { padding: 1rem; border-radius: 0.75rem; background: rgba(15,23,42,0.6); backdrop-filter: blur(12px); border: 1px solid rgba(45,212,191,0.2); }
.projects-feature-item svg { width: 1.5rem; height: 1.5rem; color: var(--teal-400); margin-bottom: 0.5rem; }
.projects-feature-item h4 { font-size: 1rem; font-weight: 700; color: white; }
.projects-feature-item p { margin-top: 0.25rem; font-size: 0.75rem; color: var(--slate-300); }
.projects-types-title { font-size: 1.25rem; font-weight: 700; color: var(--slate-900); margin-bottom: 1.5rem; text-align: center; }
.projects-types { display: grid; gap: 0.75rem; grid-template-columns: repeat(2, 1fr); }
@media (min-width: 640px) { .projects-types { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .projects-types { grid-template-columns: repeat(5, 1fr); } }
.project-type { position: relative; border-radius: 0.75rem; border: 1px solid; padding: 1rem; }
.project-type-num { font-size: 0.75rem; font-family: "Geist Mono", "SF Mono", "Monaco", "Cascadia Code", "Roboto Mono", Consolas, monospace; color: rgba(13,148,136,0.6); margin-bottom: 0.25rem; }
.project-type-name { font-size: 0.875rem; font-weight: 700; color: var(--slate-900); }
.project-type-desc { margin-top: 0.25rem; font-size: 0.625rem; color: var(--slate-500); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.project-type-cat { margin-top: 0.5rem; display: inline-block; border-radius: 0.25rem; background: rgba(255,255,255,0.6); padding: 0.125rem 0.375rem; font-size: 0.625rem; font-weight: 500; color: var(--slate-600); }
/* 项目分类配色 */
.cat-3d点云 { background: linear-gradient(135deg, rgba(20,184,166,0.15), rgba(16,185,129,0.1)); border-color: rgba(45,212,191,0.3); }
.cat-车道线 { background: linear-gradient(135deg, rgba(16,185,129,0.15), rgba(34,197,94,0.1)); border-color: rgba(52,211,153,0.3); }
.cat-多模态 { background: linear-gradient(135deg, rgba(245,158,11,0.15), rgba(249,115,22,0.1)); border-color: rgba(251,191,36,0.3); }
.cat-泊车 { background: linear-gradient(135deg, rgba(34,211,238,0.15), rgba(20,184,166,0.1)); border-color: rgba(34,211,238,0.3); }
.cat-交通 { background: linear-gradient(135deg, rgba(251,113,133,0.15), rgba(244,63,94,0.1)); border-color: rgba(251,113,133,0.3); }
.cat-座舱 { background: linear-gradient(135deg, rgba(167,139,250,0.15), rgba(168,85,247,0.1)); border-color: rgba(167,139,250,0.3); }
.cat-分类 { background: linear-gradient(135deg, rgba(56,189,248,0.15), rgba(34,211,238,0.1)); border-color: rgba(56,189,248,0.3); }
.cat-障碍物 { background: linear-gradient(135deg, rgba(249,115,22,0.15), rgba(245,158,11,0.1)); border-color: rgba(249,115,22,0.3); }
.cat-区域 { background: linear-gradient(135deg, rgba(163,230,53,0.15), rgba(132,204,22,0.1)); border-color: rgba(163,230,53,0.3); }

.projects-bottom { margin-top: 3rem; display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .projects-bottom { grid-template-columns: repeat(3, 1fr); } }
.projects-bottom-item { display: flex; align-items: flex-start; gap: 1rem; border-radius: 1rem; border: 1px solid rgba(20,184,166,0.1); background: white; padding: 1.25rem; }
.projects-bottom-icon { display: flex; align-items: center; justify-content: center; width: 2.75rem; height: 2.75rem; border-radius: 0.75rem; background: var(--teal-50); color: var(--teal-600); flex-shrink: 0; }
.projects-bottom-icon svg { width: 1.25rem; height: 1.25rem; }
.projects-bottom-item h4 { font-size: 1rem; font-weight: 700; color: var(--slate-900); }
.projects-bottom-item p { margin-top: 0.25rem; font-size: 0.875rem; color: var(--slate-600); line-height: 1.625; }

/* ===== Security 板块 (深色) ===== */
.security { background: linear-gradient(to bottom, var(--slate-900), var(--slate-950)); }
.security-grid { margin-top: 4rem; display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .security-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .security-grid { grid-template-columns: repeat(3, 1fr); } }
.security-card { position: relative; border-radius: 1rem; padding: 1.5rem; overflow: hidden; background: rgba(15,23,42,0.6); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.1); }
.security-card-glow { position: absolute; top: -2rem; right: -2rem; width: 6rem; height: 6rem; border-radius: 50%; background: rgba(20,184,166,0.1); transition: transform 0.5s; }
.security-card:hover .security-card-glow { transform: scale(1.5); }
.security-card-header { position: relative; display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem; }
.security-card-icon { display: flex; align-items: center; justify-content: center; width: 3rem; height: 3rem; border-radius: 0.75rem; background: linear-gradient(135deg, rgba(20,184,166,0.2), rgba(16,185,129,0.1)); border: 1px solid rgba(45,212,191,0.2); color: var(--teal-300); }
.security-card-icon svg { width: 1.5rem; height: 1.5rem; }
.security-card-num { font-size: 1.875rem; font-weight: 700; color: rgba(255,255,255,0.1); font-family: "Geist Mono", "SF Mono", "Monaco", "Cascadia Code", "Roboto Mono", Consolas, monospace; }
.security-card h3 { position: relative; font-size: 1.125rem; font-weight: 700; color: white; }
.security-card p { position: relative; margin-top: 0.5rem; font-size: 0.875rem; color: var(--slate-400); line-height: 1.625; }
.security-certs { margin-top: 4rem; border-radius: 1rem; border: 1px solid rgba(45,212,191,0.2); background: rgba(20,184,166,0.05); padding: 1.5rem; }
@media (min-width: 640px) { .security-certs { padding: 2rem; } }
.security-certs-header { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1.5rem; }
.security-certs-header svg { width: 1.5rem; height: 1.5rem; color: var(--teal-400); }
.security-certs-header h3 { font-size: 1.25rem; font-weight: 700; color: white; }
.security-certs-grid { display: grid; gap: 1rem; grid-template-columns: repeat(2, 1fr); }
@media (min-width: 1024px) { .security-certs-grid { grid-template-columns: repeat(4, 1fr); } }
.security-cert { border-radius: 0.75rem; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); padding: 1rem; text-align: center; transition: all 0.2s; }
.security-cert:hover { border-color: rgba(45,212,191,0.4); background: rgba(20,184,166,0.1); }
.security-cert-icon { margin: 0 auto 0.75rem; display: flex; align-items: center; justify-content: center; width: 3rem; height: 3rem; border-radius: 50%; background: linear-gradient(135deg, rgba(251,191,36,0.2), rgba(245,158,11,0.1)); border: 1px solid rgba(251,191,36,0.3); }
.security-cert-icon svg { width: 1.5rem; height: 1.5rem; color: var(--amber-400); }
.security-cert h4 { font-size: 0.875rem; font-weight: 700; color: white; }
.security-cert p { margin-top: 0.25rem; font-size: 0.75rem; color: var(--slate-400); }

/* ===== Delivery 板块 ===== */
.delivery { background: linear-gradient(to bottom, white, var(--slate-50)); }
.delivery-process { margin-top: 4rem; display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .delivery-process { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .delivery-process { grid-template-columns: repeat(3, 1fr); } }
.delivery-step { position: relative; border-radius: 1rem; background: white; border: 1px solid rgba(226,232,240,0.8); padding: 1.5rem; overflow: hidden; }
.delivery-step-bg { position: absolute; top: -1rem; right: -1rem; font-size: 5rem; font-weight: 700; color: rgba(20,184,166,0.05); }
.delivery-step:hover .delivery-step-bg { color: rgba(20,184,166,0.1); }
.delivery-step-header { position: relative; display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; }
.delivery-step-num { display: flex; align-items: center; justify-content: center; width: 2.5rem; height: 2.5rem; border-radius: 0.75rem; background: linear-gradient(135deg, var(--teal-500), var(--emerald-600)); color: white; font-weight: 700; font-size: 0.875rem; box-shadow: 0 10px 15px -3px rgba(20,184,166,0.2); }
.delivery-step-arrow { width: 1rem; height: 1rem; color: rgba(45,212,191,0.4); display: none; }
@media (min-width: 1024px) { .delivery-step-arrow { display: block; } }
.delivery-step h3 { position: relative; font-size: 1rem; font-weight: 700; color: var(--slate-900); }
.delivery-step p { position: relative; margin-top: 0.5rem; font-size: 0.875rem; color: var(--slate-600); line-height: 1.625; }

/* 5+1 模型 */
.delivery-model { margin-top: 3rem; position: relative; border-radius: 1.5rem; overflow: hidden; background: linear-gradient(135deg, var(--teal-600), var(--teal-700), var(--emerald-800)); padding: 2rem; }
@media (min-width: 640px) { .delivery-model { padding: 3rem; } }
.delivery-model-grid { position: relative; display: grid; gap: 2rem; align-items: center; }
@media (min-width: 1024px) { .delivery-model-grid { grid-template-columns: 1fr 1fr; } }
.delivery-model-text { color: white; }
.delivery-model-badge { display: inline-flex; align-items: center; gap: 0.5rem; border-radius: 9999px; background: rgba(255,255,255,0.15); backdrop-filter: blur(4px); padding: 0.375rem 1rem; font-size: 0.75rem; font-weight: 500; margin-bottom: 1rem; }
.delivery-model-badge svg { width: 0.875rem; height: 0.875rem; }
.delivery-model h3 { font-size: 1.875rem; font-weight: 700; margin-bottom: 1rem; }
@media (min-width: 640px) { .delivery-model h3 { font-size: 2.25rem; } }
.delivery-model p { color: rgba(204,251,241,0.9); line-height: 1.625; }
.delivery-model-visual { display: flex; align-items: center; justify-content: center; gap: 1rem; flex-wrap: wrap; max-width: 100%; overflow: hidden; }
.delivery-model-group { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; }
.delivery-model-annotators { display: flex; gap: 0.5rem; }
.delivery-model-person { display: flex; align-items: center; justify-content: center; width: 3.5rem; height: 3.5rem; border-radius: 0.75rem; background: rgba(255,255,255,0.2); backdrop-filter: blur(4px); border: 1px solid rgba(255,255,255,0.3); color: white; flex-shrink: 0; }
.delivery-model-person svg { width: 1.25rem; height: 1.25rem; }
.delivery-model-person.qa { width: 4rem; height: 4rem; background: var(--amber-400); color: var(--slate-900); box-shadow: 0 10px 15px -3px rgba(251,191,36,0.3); }
.delivery-model-label { font-size: 0.75rem; font-weight: 500; }
.delivery-model-label.teal { color: rgba(204,251,241,1); }
.delivery-model-label.amber { color: rgba(253,230,138,1); }
.delivery-model-plus { font-size: 1.5rem; font-weight: 700; color: rgba(255,255,255,0.6); }
@media (max-width: 639px) {
  .delivery-model-visual { gap: 0.5rem; }
  .delivery-model-person { width: 2.5rem; height: 2.5rem; }
  .delivery-model-person svg { width: 1rem; height: 1rem; }
  .delivery-model-person.qa { width: 3rem; height: 3rem; }
  .delivery-model-annotators { gap: 0.375rem; }
  .delivery-model-label { font-size: 0.625rem; }
  .delivery-model-plus { font-size: 1.25rem; }
}

.delivery-highlights { margin-top: 3rem; display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .delivery-highlights { grid-template-columns: repeat(3, 1fr); } }
.delivery-highlight { border-radius: 1rem; border: 1px solid rgba(226,232,240,0.8); background: white; padding: 1.5rem; text-align: center; }
.delivery-highlight-icon { margin: 0 auto 0.75rem; display: flex; align-items: center; justify-content: center; width: 3rem; height: 3rem; border-radius: 0.75rem; background: var(--teal-50); color: var(--teal-600); }
.delivery-highlight-icon svg { width: 1.5rem; height: 1.5rem; }
.delivery-highlight-value { font-size: 1.875rem; font-weight: 700; }
.delivery-highlight-label { margin-top: 0.25rem; font-size: 0.875rem; font-weight: 500; color: var(--slate-900); }
.delivery-highlight-desc { margin-top: 0.5rem; font-size: 0.75rem; color: var(--slate-500); }

/* ===== Team 板块 ===== */
.team { background: var(--bg); }
.team-grid { margin-top: 4rem; display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .team-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .team-grid { grid-template-columns: repeat(3, 1fr); } }
.team-card { position: relative; border-radius: 1rem; background: white; border: 1px solid rgba(226,232,240,0.8); padding: 1.5rem; overflow: hidden; }
.team-card-bg { position: absolute; top: 0; right: 0; width: 8rem; height: 8rem; background: linear-gradient(135deg, rgba(20,184,166,0.05), transparent); border-bottom-left-radius: 100%; }
.team-card-header { position: relative; display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem; }
.team-card-icon { display: flex; align-items: center; justify-content: center; width: 3.5rem; height: 3.5rem; border-radius: 1rem; background: linear-gradient(135deg, var(--teal-500), var(--emerald-600)); color: white; box-shadow: 0 10px 15px -3px rgba(20,184,166,0.2); }
.team-card-icon svg { width: 1.75rem; height: 1.75rem; }
.team-card-role { font-size: 0.75rem; font-family: "Geist Mono", "SF Mono", "Monaco", "Cascadia Code", "Roboto Mono", Consolas, monospace; color: rgba(13,148,136,0.6); letter-spacing: 0.025em; }
.team-card h3 { font-size: 1.125rem; font-weight: 700; color: var(--slate-900); }
.team-card-desc { position: relative; font-size: 0.875rem; color: var(--slate-600); line-height: 1.625; min-height: 80px; }
.team-card-tags { position: relative; margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--slate-100); display: flex; flex-wrap: wrap; gap: 0.375rem; }
.team-card-tag { display: inline-flex; align-items: center; border-radius: 0.375rem; background: var(--teal-50); border: 1px solid rgba(20,184,166,0.1); padding: 0.25rem 0.5rem; font-size: 0.75rem; font-weight: 500; color: var(--teal-700); }

/* 培训流程卡片 */
.training-card { grid-column: 1 / -1; position: relative; border-radius: 1rem; background: linear-gradient(135deg, var(--slate-900), var(--slate-800)); padding: 2rem; overflow: hidden; }
.training-header { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1.5rem; }
.training-header-icon { display: flex; align-items: center; justify-content: center; width: 2.5rem; height: 2.5rem; border-radius: 0.75rem; background: rgba(20,184,166,0.2); color: var(--teal-300); }
.training-header-icon svg { width: 1.25rem; height: 1.25rem; }
.training-header h3 { font-size: 1.25rem; font-weight: 700; color: white; }
.training-grid { display: grid; gap: 0.75rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .training-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .training-grid { grid-template-columns: repeat(4, 1fr); } }
.training-step { display: flex; gap: 0.75rem; border-radius: 0.75rem; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); padding: 0.75rem; }
.training-step-num { display: flex; align-items: center; justify-content: center; width: 1.75rem; height: 1.75rem; flex-shrink: 0; border-radius: 0.5rem; background: rgba(20,184,166,0.2); color: var(--teal-300); font-size: 0.75rem; font-weight: 700; }
.training-step p { font-size: 0.75rem; color: var(--slate-300); line-height: 1.5; }

/* Tabs */
.tabs { margin-top: 2rem; }
.tabs-list { display: grid; width: 100%; max-width: 28rem; margin: 0 auto; grid-template-columns: repeat(2, 1fr); background: var(--teal-50); border-radius: 0.5rem; padding: 0.25rem; gap: 0.25rem; }
.tab-btn { padding: 0.25rem 0.5rem; border-radius: 0.375rem; font-size: 0.875rem; font-weight: 500; line-height: 1.25rem; color: var(--slate-600); transition: all 0.2s; background: none; border: none; cursor: pointer; }
.tab-btn.active { background: white; color: var(--slate-900); box-shadow: 0 1px 2px rgba(0,0,0,0.05); }
.tab-content { margin-top: 1.5rem; display: none; }
.tab-content.active { display: block; }
.tab-panel { border-radius: 1rem; padding: 1.5rem; }
@media (min-width: 640px) { .tab-panel { padding: 2rem; } }
.tab-panel.emergency { border: 1px solid rgba(20,184,166,0.15); background: rgba(240,253,250,0.4); }
.tab-panel.quality { border: 1px solid rgba(16,185,129,0.15); background: rgba(236,253,245,0.4); }
.tab-panel h3 { font-size: 1.125rem; font-weight: 700; color: var(--slate-900); margin-bottom: 0.5rem; }
.tab-panel > p { font-size: 0.875rem; color: var(--slate-600); margin-bottom: 1.5rem; }
.tab-list-grid { display: grid; gap: 0.75rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .tab-list-grid { grid-template-columns: repeat(2, 1fr); } }
.tab-list-item { display: flex; align-items: flex-start; gap: 0.75rem; border-radius: 0.75rem; background: white; border: 1px solid rgba(20,184,166,0.1); padding: 0.75rem; }
.tab-list-item.emergency { border-color: rgba(20,184,166,0.1); }
.tab-list-item.quality { border-color: rgba(16,185,129,0.1); }
.tab-list-num { display: flex; align-items: center; justify-content: center; width: 1.5rem; height: 1.5rem; flex-shrink: 0; border-radius: 0.375rem; background: var(--teal-500); color: white; font-size: 0.75rem; font-weight: 700; }
.tab-list-item.quality .tab-list-num { background: var(--emerald-600); }
.tab-list-item p { font-size: 0.875rem; color: var(--slate-700); line-height: 1.625; }
.quality-item { border-radius: 0.75rem; background: white; border: 1px solid rgba(16,185,129,0.1); padding: 1rem; }
.quality-item-header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.5rem; }
.quality-item-header svg { width: 1.25rem; height: 1.25rem; color: var(--emerald-600); }
.quality-item h4 { font-size: 0.875rem; font-weight: 700; color: var(--slate-900); }
.quality-item p { font-size: 0.75rem; color: var(--slate-600); line-height: 1.5; }

/* ===== Contact 板块 ===== */
.contact { background: linear-gradient(to bottom, var(--slate-50), white); }
.contact-grid { margin-top: 4rem; display: grid; gap: 2rem; }
@media (min-width: 1024px) { .contact-grid { grid-template-columns: 1fr 1fr; } }
.contact-info { display: flex; flex-direction: column; gap: 1rem; }
.contact-cards { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .contact-cards { grid-template-columns: repeat(2, 1fr); } }
.contact-card { position: relative; border-radius: 1rem; border: 1px solid rgba(226,232,240,0.8); background: white; padding: 1.25rem; }
.contact-card-icon { display: flex; align-items: center; justify-content: center; width: 2.75rem; height: 2.75rem; border-radius: 0.75rem; color: white; box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1); margin-bottom: 0.75rem; }
.contact-card-icon svg { width: 1.25rem; height: 1.25rem; }
.contact-card-label { font-size: 0.75rem; color: var(--slate-500); margin-bottom: 0.25rem; }
.contact-card-value { font-size: 0.875rem; font-weight: 700; color: var(--slate-900); word-break: break-all; }
.contact-highlight { border-radius: 1rem; background: linear-gradient(135deg, var(--slate-900), var(--slate-800)); padding: 1.5rem; overflow: hidden; position: relative; }
.contact-highlight-header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.75rem; }
.contact-highlight-header svg { width: 1.25rem; height: 1.25rem; color: var(--teal-400); }
.contact-highlight h3 { font-size: 1rem; font-weight: 700; color: white; }
.contact-highlight p { font-size: 0.875rem; color: var(--slate-300); margin-bottom: 1rem; }
.contact-highlight-btn { display: inline-flex; align-items: center; gap: 0.5rem; border-radius: 0.75rem; background: linear-gradient(135deg, var(--teal-500), var(--emerald-600)); padding: 0.625rem 1.25rem; font-size: 0.875rem; font-weight: 700; color: white; box-shadow: 0 10px 15px -3px rgba(20,184,166,0.3); }
.contact-highlight-btn svg { width: 1rem; height: 1rem; }

/* 表单 */
.contact-form { border-radius: 1rem; border: 1px solid rgba(226,232,240,0.8); background: white; padding: 1.5rem; box-shadow: 0 25px 50px -12px rgba(0,0,0,0.1); }
@media (min-width: 640px) { .contact-form { padding: 2rem; } }
.contact-form h3 { font-size: 1.25rem; font-weight: 700; color: var(--slate-900); margin-bottom: 0.25rem; }
.contact-form > p { font-size: 0.875rem; color: var(--slate-500); margin-bottom: 1.5rem; }
.form-row { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .form-row { grid-template-columns: repeat(2, 1fr); } }
.form-group { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 1rem; }
.form-row .form-group { margin-bottom: 0; }
.form-group:last-of-type { margin-bottom: 0; }
.form-label { font-size: 0.875rem; font-weight: 500; color: var(--slate-700); }
.form-required { color: var(--rose-500); }
.form-input, .form-textarea { padding: 0.25rem 0.75rem; border: 1px solid var(--slate-200); border-radius: 0.375rem; font-size: 0.875rem; line-height: 1.25rem; transition: border-color 0.2s; background: white; color: var(--slate-900); width: 100%; height: 2.25rem; }
.form-input:focus, .form-textarea:focus { outline: none; border-color: var(--teal-500); box-shadow: 0 0 0 3px rgba(20,184,166,0.1); }
.form-textarea { resize: none; min-height: 5rem; height: auto; }
.form-submit { width: 100%; margin-top: 1.5rem; padding: 0.5rem 1.5rem; border-radius: 0.5rem; background: linear-gradient(135deg, var(--teal-500), var(--emerald-600)); color: white; font-weight: 500; box-shadow: 0 10px 15px -3px rgba(20,184,166,0.2); transition: all 0.2s; border: none; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 0.5rem; height: 2.5rem; }
.form-submit:hover { background: linear-gradient(135deg, var(--teal-600), var(--emerald-700)); }
.form-submit svg { width: 1rem; height: 1rem; }
.form-submit:disabled { opacity: 0.7; cursor: not-allowed; }
.form-note { margin-top: 1rem; font-size: 0.75rem; text-align: center; color: var(--slate-400); }
.form-success { margin-top: 1rem; display: none; align-items: flex-start; gap: 0.75rem; border-radius: 0.75rem; border: 1px solid var(--emerald-200); background: var(--emerald-50, #ecfdf5); padding: 1rem; opacity: 0; transform: translateY(10px) scale(0.95); transition: all 0.3s; }
.form-success.show { display: flex; opacity: 1; transform: translateY(0) scale(1); }
.form-success svg { width: 1.25rem; height: 1.25rem; color: var(--emerald-600); flex-shrink: 0; margin-top: 0.125rem; }
.form-success-text { flex: 1; }
.form-success-title { font-size: 0.875rem; font-weight: 700; color: var(--emerald-900, #064e3b); }
.form-success-desc { margin-top: 0.125rem; font-size: 0.75rem; color: var(--emerald-700, #047857); }
.form-success-close { color: var(--emerald-400); transition: color 0.2s; background: none; border: none; cursor: pointer; padding: 0; }
.form-success-close svg { width: 1rem; height: 1rem; }

/* ===== Footer ===== */
.footer { position: relative; background: var(--slate-950); color: var(--slate-300); padding: 4rem 0 0; margin-top: auto; }
.footer-top { height: 4px; background: linear-gradient(90deg, var(--teal-500), var(--emerald-400), var(--amber-400)); }
.footer-grid { display: grid; gap: 2rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr 1fr 1fr; } }
.footer-brand-logo { display: flex; align-items: center; gap: 0.625rem; margin-bottom: 1rem; }
.footer-brand-icon { display: flex; align-items: center; justify-content: center; width: 2.5rem; height: 2.5rem; border-radius: 0.75rem; background: linear-gradient(135deg, var(--teal-500), var(--emerald-600)); }
.footer-brand-icon svg { width: 1.25rem; height: 1.25rem; color: white; }
.footer-brand-name { font-size: 1.125rem; font-weight: 700; color: white; }
.footer-brand-sub { font-size: 0.625rem; letter-spacing: 0.2em; color: var(--teal-400); }
.footer-brand-desc { font-size: 0.875rem; color: var(--slate-400); line-height: 1.625; margin-bottom: 1rem; }
.footer-brand-badge { display: inline-flex; align-items: center; gap: 0.5rem; border-radius: 9999px; border: 1px solid rgba(20,184,166,0.2); background: rgba(20,184,166,0.05); padding: 0.25rem 0.75rem; font-size: 0.75rem; color: var(--teal-300); }
.footer-brand-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--teal-400); }
.footer-col h4 { font-size: 0.875rem; font-weight: 700; color: white; margin-bottom: 1rem; letter-spacing: 0.05em; text-transform: uppercase; }
.footer-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.5rem; }
.footer-link { font-size: 0.875rem; color: var(--slate-400); text-align: left; background: none; border: none; cursor: pointer; transition: color 0.2s; padding: 0; }
.footer-link:hover { color: var(--teal-400); }
.footer-contact-list { display: flex; flex-direction: column; gap: 0.75rem; }
.footer-contact-item { display: flex; align-items: flex-start; gap: 0.75rem; }
.footer-contact-icon { display: flex; align-items: center; justify-content: center; width: 2rem; height: 2rem; flex-shrink: 0; border-radius: 0.5rem; background: rgba(20,184,166,0.1); color: var(--teal-400); }
.footer-contact-icon svg { width: 1rem; height: 1rem; }
.footer-contact-label { font-size: 0.75rem; color: var(--slate-500); }
.footer-contact-value { font-size: 0.875rem; font-weight: 500; color: white; }
.footer-contact-value.small { color: var(--slate-300); font-weight: 400; line-height: 1.5; }
.footer-bottom { margin-top: 3rem; padding-top: 2rem; padding-bottom: 0.25rem; border-top: 1px solid rgba(255,255,255,0.1); display: flex; flex-direction: column; align-items: center; justify-content: space-between; gap: 1rem; }
@media (min-width: 640px) { .footer-bottom { flex-direction: row; } }
.footer-copy { font-size: 0.75rem; color: var(--slate-500); text-align: center; }
@media (min-width: 640px) { .footer-copy { text-align: left; } }
.footer-copy p + p { margin-top: 0.25rem; }
.footer-top-btn { display: flex; align-items: center; gap: 0.5rem; border-radius: 9999px; border: 1px solid rgba(255,255,255,0.1); background: rgba(255,255,255,0.05); padding: 0.5rem 1rem; font-size: 0.75rem; color: var(--slate-400); transition: all 0.2s; cursor: pointer; }
.footer-top-btn:hover { color: white; border-color: rgba(45,212,191,0.4); background: rgba(20,184,166,0.1); }
.footer-top-btn svg { width: 0.875rem; height: 0.875rem; transition: transform 0.2s; }
.footer-top-btn:hover svg { transform: translateY(-2px); }

/* ===== Main wrapper for sticky footer ===== */
.page-wrapper { min-height: 100vh; display: flex; flex-direction: column; background: var(--bg); overflow-x: hidden; max-width: 100%; }
main { flex: 1; overflow-x: hidden; }