/* =================================================================
   微盟 (ZhanDev) · 设计稿 1.2
   设计系统 - 共享 CSS
   配色：深蓝主色 + 蓝紫渐变 + 橙色点缀 + 中国红副品牌
   新增：流动光斑背景 / 网格点阵 / 噪点纹理 / 视差跟随
   ================================================================= */

/* ----- 1. CSS 变量（设计 tokens） ----- */
:root {
  /* 主色 */
  --c-primary: #1E40AF;          /* 深蓝 - 权威感 */
  --c-primary-light: #3B5BDB;    /* 中蓝 - hover */
  --c-gradient-start: #5B6EE1;   /* 蓝紫渐变 - 取自微盟 LOGO */
  --c-gradient-end: #4FB4D9;     /* 天蓝渐变 */

  /* 点缀 */
  --c-accent: #F97316;           /* 橙色 - CTA / 数据 */
  --c-red: #C8242C;              /* 中国红 - 副品牌 */
  --c-green: #10B981;            /* 绿 - 成功/保障 */

  /* 文字 */
  --c-text: #0F172A;             /* 主文字 - 近黑 */
  --c-text-2: #475569;           /* 次文字 - 灰 */
  --c-text-3: #94A3B8;           /* 弱化 - 浅灰 */

  /* 背景 */
  --c-bg: #FFFFFF;
  --c-bg-soft: #F8FAFC;          /* 浅灰 */
  --c-bg-dark: #0B1437;          /* 深色 hero */
  --c-border: #E2E8F0;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
  --shadow-xl: 0 24px 60px rgba(15, 23, 42, 0.15);

  /* 字号 */
  --fs-xs: 12px;
  --fs-sm: 14px;
  --fs-base: 16px;
  --fs-lg: 18px;
  --fs-xl: 20px;
  --fs-2xl: 24px;
  --fs-3xl: 30px;
  --fs-4xl: 36px;
  --fs-5xl: 48px;
  --fs-6xl: 60px;

  /* 圆角 */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-full: 999px;

  /* 间距 */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-8: 32px;
  --sp-10: 40px;
  --sp-12: 48px;
  --sp-16: 64px;
  --sp-20: 80px;
  --sp-24: 96px;

  /* 容器 */
  --container: 1200px;
  --container-narrow: 960px;
}

/* ----- 2. Reset ----- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC",
    "Helvetica Neue", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--c-text);
  background: #FAFBFE !important;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
  display: flex;
  flex-direction: column;
}
/* 让所有 section 区域自动填满，footer 始终贴底 */
body > section,
body > .navbar {
  flex-shrink: 0;
}
/* footer 始终贴视口底部（关键修复） */
body > .footer {
  margin-top: auto;
  background: #0B1437;
  color: #94A3B8;
  padding: var(--sp-16) 0 var(--sp-10);
  font-size: var(--fs-sm);
  position: relative;
  z-index: 3;
}
/* html 兜底色 = body 同色，避免底部留白 */
html { background: #FAFBFE !important; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--c-primary); }
button, input, textarea, select { font: inherit; color: inherit; border: none; outline: none; background: transparent; }
ul, ol { list-style: none; }

/* ----- 2.5 鼠标光晕跟随（高端感） ----- */
.cursor-glow {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(91, 110, 225, 0.06) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s;
  opacity: 0;
  mix-blend-mode: multiply;
}
.cursor-glow.active { opacity: 1; }

/* ----- 2.4 全站动态背景层（品质感） ----- */
.bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background:
    linear-gradient(180deg, #FAFBFE 0%, #F0F4FF 50%, #FAFBFE 100%);
}

/* 噪点纹理（极淡，几乎看不见，但让纯色不死板） */
.bg-noise {
  position: absolute;
  inset: 0;
  opacity: 0.4;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.4  0 0 0 0 0.4  0 0 0 0 0.4  0 0 0 0.18 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  mix-blend-mode: multiply;
  pointer-events: none;
}

/* 流动光斑（3 个，缓慢飘动） */
/* 关键：keyframes 用 left/top 浮动，JS 用 transform 做视差 — 不冲突 */
.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.85;
  pointer-events: none;
  will-change: transform, left, top;
  /* 默认 transform 给 JS 留位 */
  transform: translate3d(0, 0, 0);
}
.bg-orb-1 {
  width: 700px;
  height: 700px;
  top: -10%;
  left: -10%;
  background: radial-gradient(circle, rgba(91, 110, 225, 0.75), transparent 60%);
  animation: orbFloat1 22s ease-in-out infinite;
}
.bg-orb-2 {
  width: 600px;
  height: 600px;
  top: 40%;
  right: -10%;
  background: radial-gradient(circle, rgba(79, 180, 217, 0.65), transparent 60%);
  animation: orbFloat2 28s ease-in-out infinite;
}
.bg-orb-3 {
  width: 500px;
  height: 500px;
  bottom: -10%;
  left: 30%;
  background: radial-gradient(circle, rgba(249, 115, 22, 0.35), transparent 60%);
  animation: orbFloat3 32s ease-in-out infinite;
}
/* 关键：用 left/top 而非 transform，避免和 JS 视差冲突 */
@keyframes orbFloat1 {
  0%, 100% { left: -10%; top: -10%; }
  33% { left: 25%; top: 20%; }
  66% { left: 15%; top: 50%; }
}
@keyframes orbFloat2 {
  0%, 100% { right: -10%; top: 40%; }
  33% { right: 20%; top: 60%; }
  66% { right: 5%; top: 20%; }
}
@keyframes orbFloat3 {
  0%, 100% { left: 30%; bottom: -10%; }
  50% { left: 50%; bottom: 20%; }
}

/* 网格点阵（极淡的专业感底纹） */
.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(91, 110, 225, 0.08) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 80%);
  pointer-events: none;
  opacity: 0.6;
}

/* 内容层在背景之上 */
body > *:not(.bg-canvas):not(.cursor-glow):not(.read-progress) {
  position: relative;
  z-index: 2;
}

/* ----- 2.6 顶部阅读进度条 ----- */
.read-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-gradient-start), var(--c-gradient-end), var(--c-accent));
  z-index: 1000;
  width: 0;
  transition: width 0.1s linear;
  box-shadow: 0 0 10px rgba(91, 110, 225, 0.5);
}

/* ----- 2.7 滚动揭示动画 ----- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}
.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}
.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}
/* 错位动画（多卡片时） */
.reveal[data-delay="100"] { transition-delay: 0.1s; }
.reveal[data-delay="200"] { transition-delay: 0.2s; }
.reveal[data-delay="300"] { transition-delay: 0.3s; }
.reveal[data-delay="400"] { transition-delay: 0.4s; }
.reveal[data-delay="500"] { transition-delay: 0.5s; }
.reveal[data-delay="600"] { transition-delay: 0.6s; }

/* ----- 3. 通用工具类 ----- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--sp-6); }
.container-narrow { max-width: var(--container-narrow); margin: 0 auto; padding: 0 var(--sp-6); }
.text-center { text-align: center; }
.text-accent { color: var(--c-accent); }
.text-primary { color: var(--c-primary); }
.text-muted { color: var(--c-text-2); }
.font-bold { font-weight: 700; }
.font-semi { font-weight: 600; }

/* ----- 4. 按钮 ----- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 10px 20px;
  border-radius: var(--r-md);
  font-weight: 600;
  font-size: var(--fs-sm);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
/* 按钮波纹效果 */
.btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}
.btn:active::before {
  width: 300px;
  height: 300px;
  transition: 0s;
}
.btn-primary {
  background: linear-gradient(135deg, var(--c-gradient-start), var(--c-gradient-end));
  color: #fff;
  box-shadow: 0 6px 20px rgba(91, 110, 225, 0.3);
}
.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 14px 36px rgba(91, 110, 225, 0.45),
              0 0 0 4px rgba(91, 110, 225, 0.15);
  color: #fff;
}
.btn-accent {
  background: var(--c-accent);
  color: #fff;
  box-shadow: 0 6px 20px rgba(249, 115, 22, 0.3);
}
.btn-accent:hover {
  background: #EA580C;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 14px 36px rgba(249, 115, 22, 0.45),
              0 0 0 4px rgba(249, 115, 22, 0.15);
  color: #fff;
}
.btn-outline {
  background: transparent;
  color: var(--c-primary);
  border: 2px solid var(--c-primary);
}
.btn-outline:hover {
  background: var(--c-primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(30, 64, 175, 0.3);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
  transform: translateY(-2px);
}

/* ----- 5. 顶部导航 ----- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: all 0.3s;
}
.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: var(--c-border);
  box-shadow: 0 2px 20px rgba(15, 23, 42, 0.05);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: var(--sp-4);
  flex-wrap: nowrap;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-weight: 700;
  font-size: var(--fs-xl);
  transition: transform 0.2s;
}
.nav-logo:hover { transform: scale(1.02); }
.nav-logo img {
  height: 36px;
  width: auto;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.nav-logo:hover img { transform: rotate(-5deg) scale(1.05); }
.nav-logo-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 500;
  color: var(--c-text-2);
  border: 1px solid var(--c-border);
  padding: 2px 6px;
  border-radius: var(--r-sm);
  margin-left: var(--sp-1);
  transition: all 0.2s;
}
.nav-logo:hover .nav-logo-badge {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
  flex-wrap: nowrap;
}
.nav-menu a {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--c-text);
  position: relative;
  padding: 8px 0;
  transition: color 0.2s;
  white-space: nowrap;
}
.nav-menu a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-gradient-start), var(--c-gradient-end));
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  transform: translateX(-50%);
}
.nav-menu a:hover {
  color: var(--c-primary);
}
.nav-menu a:hover::after,
.nav-menu a.active::after { width: 100%; }
.nav-cta { display: flex; gap: var(--sp-2); align-items: center; flex-shrink: 0; }
.nav-phone {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--c-primary);
  transition: all 0.2s;
  cursor: pointer;
  white-space: nowrap;
}
.nav-phone:hover {
  color: var(--c-accent);
  transform: scale(1.05);
  text-shadow: 0 0 20px rgba(249, 115, 22, 0.3);
}
.nav-mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav-mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-text);
  position: relative;
  transition: all 0.3s;
}
.nav-mobile-toggle span::before,
.nav-mobile-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background: var(--c-text);
  transition: all 0.3s;
}
.nav-mobile-toggle span::before { top: -7px; }
.nav-mobile-toggle span::after { top: 7px; }

/* ----- 6. Hero 区域 ----- */
.hero {
  position: relative;
  background: var(--c-bg-dark);
  color: #fff;
  overflow: hidden;
  padding: var(--sp-24) 0 var(--sp-20);
}
.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -10%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(91, 110, 225, 0.3) 0%, transparent 60%);
  filter: blur(60px);
  z-index: 0;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(79, 180, 217, 0.2) 0%, transparent 60%);
  filter: blur(80px);
  z-index: 0;
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--sp-12);
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 6px 14px;
  background: rgba(91, 110, 225, 0.15);
  border: 1px solid rgba(91, 110, 225, 0.4);
  border-radius: var(--r-full);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: #C7D2FE;
  margin-bottom: var(--sp-6);
}
.hero-eyebrow .dot {
  width: 6px;
  height: 6px;
  background: var(--c-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--c-green);
}
.hero h1 {
  font-size: var(--fs-5xl);
  line-height: 1.15;
  font-weight: 800;
  margin-bottom: var(--sp-5);
  letter-spacing: -0.02em;
}
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--c-gradient-start), var(--c-gradient-end));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  font-size: var(--fs-lg);
  line-height: 1.7;
  color: #CBD5E1;
  margin-bottom: var(--sp-8);
  max-width: 540px;
}
.hero-cta {
  display: flex;
  gap: var(--sp-3);
  flex-wrap: wrap;
  margin-bottom: var(--sp-10);
}
.hero-trust {
  display: flex;
  gap: var(--sp-8);
  flex-wrap: wrap;
}
.hero-trust-item {
  display: flex;
  flex-direction: column;
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--r-md);
  transition: all 0.3s;
  cursor: pointer;
}
.hero-trust-item:hover {
  background: rgba(255, 255, 255, 0.05);
  transform: translateY(-2px);
}
.hero-trust-item:hover .hero-trust-num span {
  text-shadow: 0 0 20px rgba(249, 115, 22, 0.8);
}
.hero-trust-num {
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: #fff;
  line-height: 1;
  font-family: "DIN Pro", "Helvetica Neue", sans-serif;
}
.hero-trust-num span {
  color: var(--c-accent);
  transition: text-shadow 0.3s;
}
.hero-trust-label {
  font-size: var(--fs-sm);
  color: #94A3B8;
  margin-top: var(--sp-1);
}
/* Hero 右侧 - 联系方式卡 */
.hero-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--r-xl);
  padding: var(--sp-8);
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.hero-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: var(--r-xl);
  padding: 1px;
  background: linear-gradient(135deg, rgba(91, 110, 225, 0.6), rgba(79, 180, 217, 0.6), rgba(249, 115, 22, 0.6));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}
.hero-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 30px 80px rgba(91, 110, 225, 0.25);
  background: rgba(255, 255, 255, 0.08);
}
.hero-card:hover::before { opacity: 1; }
.hero-card:hover .hero-card-phone {
  background: linear-gradient(135deg, #fff, #FBBF24);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-card:hover .hero-card-qr-img {
  transform: scale(1.05) rotate(2deg);
  box-shadow: 0 0 30px rgba(79, 180, 217, 0.5);
}
.hero-card-title {
  font-size: var(--fs-xl);
  font-weight: 700;
  margin-bottom: var(--sp-2);
}
.hero-card-subtitle {
  font-size: var(--fs-sm);
  color: #94A3B8;
  margin-bottom: var(--sp-6);
}
.hero-card-phone {
  font-size: var(--fs-3xl);
  font-weight: 800;
  background: linear-gradient(135deg, #fff, #C7D2FE);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: var(--sp-2);
  font-family: "DIN Pro", "Helvetica Neue", sans-serif;
  letter-spacing: 0.02em;
  transition: all 0.4s;
}
.hero-card-name {
  font-size: var(--fs-sm);
  color: #94A3B8;
  margin-bottom: var(--sp-6);
}
.hero-card-divider {
  border-top: 1px dashed rgba(255, 255, 255, 0.15);
  margin: var(--sp-6) 0;
}
.hero-card-qr {
  display: flex;
  gap: var(--sp-4);
  align-items: center;
}
.hero-card-qr-img {
  width: 110px;
  height: 110px;
  background: #fff;
  border-radius: var(--r-md);
  padding: 6px;
  flex-shrink: 0;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.hero-card-qr-img img { width: 100%; height: 100%; object-fit: contain; }
.hero-card-qr-tip {
  font-size: var(--fs-sm);
  line-height: 1.6;
  color: #CBD5E1;
}
.hero-card-qr-tip strong { color: #fff; display: block; margin-bottom: 4px; font-size: var(--fs-base); }

/* ----- 7. 通用 Section ----- */
section { padding: var(--sp-20) 0; }
.section-eyebrow {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--c-primary);
  background: rgba(30, 64, 175, 0.08);
  padding: 4px 12px;
  border-radius: var(--r-full);
  margin-bottom: var(--sp-3);
}
.section-title {
  font-size: var(--fs-4xl);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: var(--sp-4);
  letter-spacing: -0.01em;
}
.section-subtitle {
  font-size: var(--fs-lg);
  color: var(--c-text-2);
  max-width: 720px;
  margin: 0 auto var(--sp-12);
  line-height: 1.7;
}
.section-head { text-align: center; margin-bottom: var(--sp-12); }

/* ----- 8. 痛点 / 为什么选我们 ----- */
.bg-soft {
  background: rgba(248, 250, 252, 0.55);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: relative;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}
.why-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: var(--sp-8);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
/* 渐变光晕背景 */
.why-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--c-gradient-start), var(--c-gradient-end));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.why-card::after {
  content: "";
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(91, 110, 225, 0.05) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}
.why-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(91, 110, 225, 0.15);
  border-color: rgba(91, 110, 225, 0.3);
}
.why-card:hover::before { transform: scaleX(1); }
.why-card:hover::after { opacity: 1; }
.why-card:hover .why-icon {
  transform: scale(1.15) rotate(-5deg);
  background: linear-gradient(135deg, var(--c-gradient-start), var(--c-gradient-end));
}
.why-card:hover .why-title { color: var(--c-primary); }
.why-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--r-md);
  background: linear-gradient(135deg, rgba(91, 110, 225, 0.1), rgba(79, 180, 217, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: var(--sp-4);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  z-index: 1;
}
.why-title {
  font-size: var(--fs-xl);
  font-weight: 700;
  margin-bottom: var(--sp-3);
  transition: color 0.3s;
  position: relative;
  z-index: 1;
}
.why-desc {
  font-size: var(--fs-sm);
  color: var(--c-text-2);
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

/* ----- 9. 核心服务 ----- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-5);
}
.service-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: var(--sp-8) var(--sp-6);
  text-align: center;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(91, 110, 225, 0.03), rgba(79, 180, 217, 0.03));
  opacity: 0;
  transition: opacity 0.3s;
  z-index: 0;
}
.service-card:hover {
  border-color: transparent;
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 50px rgba(91, 110, 225, 0.2),
              0 0 0 2px var(--c-primary);
}
.service-card:hover::before { opacity: 1; }
.service-card:hover .service-icon-wrap {
  transform: scale(1.1) rotate(8deg);
  box-shadow: 0 12px 30px rgba(91, 110, 225, 0.4);
}
.service-card:hover .service-link {
  color: var(--c-accent);
  transform: translateX(4px);
}
.service-icon-wrap {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--sp-4);
  border-radius: var(--r-md);
  background: linear-gradient(135deg, var(--c-gradient-start), var(--c-gradient-end));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 30px;
  box-shadow: 0 8px 20px rgba(91, 110, 225, 0.25);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  z-index: 1;
}
.service-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  margin-bottom: var(--sp-2);
  position: relative;
  z-index: 1;
}
.service-desc {
  font-size: var(--fs-sm);
  color: var(--c-text-2);
  line-height: 1.6;
  margin-bottom: var(--sp-4);
  position: relative;
  z-index: 1;
}
.service-link {
  font-size: var(--fs-sm);
  color: var(--c-primary);
  font-weight: 600;
  display: inline-block;
  transition: all 0.3s;
  position: relative;
  z-index: 1;
}

/* ----- 10. 案例 ----- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-6);
}
.case-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  position: relative;
}
.case-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.15);
  border-color: transparent;
}
.case-card:hover .case-thumb {
  transform: scale(1.05);
}
.case-card:hover .case-thumb::after {
  background: rgba(255, 255, 255, 0.4);
  transform: translateX(4px);
}
.case-card:hover .case-stat-num {
  color: var(--c-primary);
  transform: scale(1.05);
}
.case-thumb {
  height: 200px;
  background: linear-gradient(135deg, var(--c-gradient-start), var(--c-gradient-end));
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 600;
  overflow: hidden;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.case-thumb.alt-1 { background: linear-gradient(135deg, #1E40AF, #5B6EE1); }
.case-thumb.alt-2 { background: linear-gradient(135deg, #F97316, #FBBF24); }
.case-thumb.alt-3 { background: linear-gradient(135deg, #10B981, #34D399); }
.case-thumb.alt-4 { background: linear-gradient(135deg, #C8242C, #F87171); }
/* 缩放遮罩 */
.case-thumb::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.2);
  opacity: 0;
  transition: opacity 0.3s;
}
.case-card:hover .case-thumb::before { opacity: 1; }
.case-thumb::after {
  content: "查看详情 →";
  position: absolute;
  bottom: 12px;
  right: 16px;
  font-size: 14px;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.2);
  padding: 6px 12px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
  transition: all 0.3s;
  z-index: 2;
}
.case-body { padding: var(--sp-6); }
.case-tag {
  display: inline-block;
  font-size: var(--fs-xs);
  background: var(--c-bg-soft);
  color: var(--c-text-2);
  padding: 2px 8px;
  border-radius: var(--r-sm);
  margin-bottom: var(--sp-2);
  transition: all 0.3s;
}
.case-card:hover .case-tag {
  background: var(--c-primary);
  color: #fff;
}
.case-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  margin-bottom: var(--sp-2);
  line-height: 1.4;
}
.case-meta {
  font-size: var(--fs-sm);
  color: var(--c-text-2);
  margin-bottom: var(--sp-4);
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
}
.case-stats {
  display: flex;
  gap: var(--sp-6);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--c-border);
}
.case-stat-num {
  font-size: var(--fs-2xl);
  font-weight: 800;
  color: var(--c-accent);
  line-height: 1;
  transition: all 0.3s;
  display: inline-block;
  transform-origin: left;
}
.case-stat-label {
  font-size: var(--fs-xs);
  color: var(--c-text-3);
  margin-top: 2px;
}

/* ----- 11. 服务流程 ----- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--sp-3);
  position: relative;
}
.process-step {
  text-align: center;
  position: relative;
  padding: var(--sp-4) var(--sp-2);
  border-radius: var(--r-md);
  transition: all 0.3s;
  cursor: pointer;
}
.process-step:hover {
  background: rgba(91, 110, 225, 0.04);
  transform: translateY(-4px);
}
.process-step:hover .process-num {
  transform: scale(1.15) rotate(-8deg);
  box-shadow: 0 12px 30px rgba(249, 115, 22, 0.4);
  background: linear-gradient(135deg, var(--c-accent), #FBBF24);
}
.process-step:hover .process-title { color: var(--c-primary); }
.process-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-gradient-start), var(--c-gradient-end));
  color: #fff;
  font-size: var(--fs-2xl);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--sp-3);
  position: relative;
  z-index: 2;
  box-shadow: 0 8px 20px rgba(91, 110, 225, 0.25);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.process-title {
  font-size: var(--fs-base);
  font-weight: 700;
  margin-bottom: var(--sp-2);
  transition: color 0.3s;
}
.process-desc {
  font-size: var(--fs-sm);
  color: var(--c-text-2);
  line-height: 1.6;
}
/* 流程线 */
.process-grid::before {
  content: "";
  position: absolute;
  top: 28px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--c-gradient-start), var(--c-gradient-end));
  z-index: 1;
}

/* ----- 12. 团队 / 资质 ----- */
.cred-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
}
.cred-item {
  text-align: center;
  padding: var(--sp-5);
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.cred-item::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: radial-gradient(circle, rgba(91, 110, 225, 0.08), transparent);
  transform: translate(-50%, -50%);
  transition: width 0.4s, height 0.4s;
  border-radius: 50%;
}
.cred-item:hover {
  border-color: var(--c-primary);
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(91, 110, 225, 0.15);
}
.cred-item:hover::before {
  width: 200px;
  height: 200px;
}
.cred-item:hover .cred-icon {
  transform: scale(1.25) rotate(-10deg);
}
.cred-icon {
  font-size: 28px;
  margin-bottom: var(--sp-2);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  z-index: 1;
}
.cred-text {
  font-size: var(--fs-sm);
  font-weight: 600;
  position: relative;
  z-index: 1;
}

/* ----- 13. FAQ ----- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  margin-bottom: var(--sp-3);
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.faq-item:hover {
  border-color: rgba(91, 110, 225, 0.3);
  box-shadow: 0 4px 16px rgba(91, 110, 225, 0.08);
}
.faq-item.open {
  border-color: var(--c-primary);
  box-shadow: 0 8px 24px rgba(91, 110, 225, 0.12);
}
.faq-q {
  padding: var(--sp-5) var(--sp-6);
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--fs-base);
  transition: color 0.2s;
}
.faq-q:hover { color: var(--c-primary); }
.faq-q::after {
  content: "+";
  font-size: var(--fs-2xl);
  color: var(--c-primary);
  font-weight: 300;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-block;
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  padding: 0 var(--sp-6);
  color: var(--c-text-2);
  line-height: 1.7;
  font-size: var(--fs-sm);
  transition: max-height 0.4s ease-out, padding 0.4s ease-out;
}
.faq-item.open .faq-q::after { transform: rotate(135deg); }
.faq-item.open .faq-a {
  max-height: 400px;
  padding: 0 var(--sp-6) var(--sp-5);
}

/* ----- 14. 客户证言 ----- */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
}
.testimonial-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: var(--sp-6);
  position: relative;
}
.testimonial-quote {
  font-size: 48px;
  color: var(--c-primary);
  line-height: 1;
  font-family: Georgia, serif;
  margin-bottom: var(--sp-3);
  opacity: 0.4;
}
.testimonial-text {
  font-size: var(--fs-sm);
  color: var(--c-text-2);
  line-height: 1.7;
  margin-bottom: var(--sp-5);
  min-height: 80px;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--c-border);
}
.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-gradient-start), var(--c-gradient-end));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: var(--fs-base);
}
.testimonial-name {
  font-size: var(--fs-sm);
  font-weight: 700;
}
.testimonial-role {
  font-size: var(--fs-xs);
  color: var(--c-text-3);
  margin-top: 2px;
}

/* ----- 15. 最终 CTA ----- */
.cta-section {
  background: var(--c-bg-dark);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(91, 110, 225, 0.3) 0%, transparent 70%);
  z-index: 0;
}
/* CTA 浮动光斑 */
.cta-section::after {
  content: "";
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(249, 115, 22, 0.3), transparent 60%);
  top: 20%;
  left: 10%;
  filter: blur(40px);
  z-index: 0;
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(40px, -30px); }
}
.cta-inner {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}
.cta-section h2 {
  font-size: var(--fs-4xl);
  font-weight: 800;
  margin-bottom: var(--sp-4);
  line-height: 1.25;
}
.cta-section p {
  font-size: var(--fs-lg);
  color: #CBD5E1;
  margin-bottom: var(--sp-8);
}
.cta-section .btn-accent { font-size: var(--fs-lg); padding: 18px 40px; }

/* ----- 16. Footer ----- */
.footer {
  /* 样式已挪到 body > .footer 块中以支持 flex 贴底 */
  background: #0B1437;
  color: #94A3B8;
  padding: var(--sp-16) 0 var(--sp-10);
  font-size: var(--fs-sm);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: var(--sp-10);
  margin-bottom: var(--sp-10);
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
}
.footer-brand img { height: 32px; }
.footer-brand-text {
  color: #fff;
  font-weight: 700;
  font-size: var(--fs-lg);
}
.footer-desc {
  line-height: 1.7;
  color: #94A3B8;
  margin-bottom: var(--sp-4);
}
.footer-h4 {
  color: #fff;
  font-size: var(--fs-base);
  font-weight: 700;
  margin-bottom: var(--sp-4);
}
.footer-list li {
  margin-bottom: var(--sp-2);
}
.footer-list a {
  display: inline-block;
  transition: all 0.2s;
  position: relative;
}
.footer-list a:hover {
  color: #fff;
  transform: translateX(4px);
}
.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-2);
  margin-bottom: var(--sp-3);
  line-height: 1.5;
}
.footer-contact-item strong {
  color: #fff;
  display: block;
  font-size: var(--fs-base);
  font-weight: 700;
  margin-bottom: 2px;
}
.footer-bottom {
  padding-top: var(--sp-6);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  color: #64748B;
  font-size: var(--fs-xs);
}
.footer-bottom a { color: #94A3B8; }
.footer-beian {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ----- 17. 移动端悬浮 CTA ----- 已删除主人不喜欢，CSS 保留备份 */
.floating-cta { display: none; }
.floating-cta {
  position: fixed;
  right: 20px;
  bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 99;
}
.float-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  font-size: 11px;
  font-weight: 600;
  color: var(--c-text-2);
  border: 1px solid var(--c-border);
  text-decoration: none;
  position: relative;
}
.float-btn:hover {
  transform: scale(1.12) translateY(-2px);
  color: var(--c-primary);
  border-color: var(--c-primary);
  box-shadow: 0 12px 30px rgba(91, 110, 225, 0.3);
}
.float-btn .icon {
  font-size: 22px;
  margin-bottom: 1px;
  transition: transform 0.3s;
}
.float-btn:hover .icon { transform: scale(1.2); }
.float-btn.primary {
  background: linear-gradient(135deg, var(--c-gradient-start), var(--c-gradient-end));
  color: #fff;
  border: none;
  animation: pulse 2s infinite;
}
.float-btn.primary:hover {
  color: #fff;
  box-shadow: 0 14px 36px rgba(91, 110, 225, 0.5);
}
/* 拨号按钮脉冲 */
@keyframes pulse {
  0%, 100% { box-shadow: 0 8px 24px rgba(91, 110, 225, 0.4), 0 0 0 0 rgba(91, 110, 225, 0.4); }
  50% { box-shadow: 0 8px 24px rgba(91, 110, 225, 0.4), 0 0 0 12px rgba(91, 110, 225, 0); }
}

/* ----- 18. 关于页 hero ----- */
.page-hero {
  background: var(--c-bg-dark);
  color: #fff;
  padding: var(--sp-20) 0 var(--sp-16);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top, rgba(91, 110, 225, 0.25), transparent 60%);
}
.page-hero-inner { position: relative; z-index: 1; }
.page-hero h1 {
  font-size: var(--fs-5xl);
  font-weight: 800;
  margin-bottom: var(--sp-4);
  line-height: 1.2;
}
.page-hero p {
  font-size: var(--fs-lg);
  color: #CBD5E1;
  max-width: 720px;
  margin: 0 auto;
}
.breadcrumb {
  display: flex;
  justify-content: center;
  gap: var(--sp-2);
  font-size: var(--fs-sm);
  color: #94A3B8;
  margin-bottom: var(--sp-4);
}
.breadcrumb a { color: #94A3B8; }
.breadcrumb a:hover { color: #fff; }

/* ----- 19. 关于页数据墙 ----- */
.stat-wall {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
  margin-top: var(--sp-12);
}
.stat-item {
  text-align: center;
  padding: var(--sp-6);
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
}
.stat-item:hover {
  transform: translateY(-6px) scale(1.03);
  border-color: var(--c-primary);
  box-shadow: 0 12px 30px rgba(91, 110, 225, 0.15);
}
.stat-item:hover .stat-num {
  background: linear-gradient(135deg, var(--c-accent), #FBBF24);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  transform: scale(1.1);
}
.stat-num {
  font-size: var(--fs-4xl);
  font-weight: 800;
  background: linear-gradient(135deg, var(--c-gradient-start), var(--c-gradient-end));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: var(--sp-2);
  transition: all 0.3s;
  display: inline-block;
}
.stat-label {
  font-size: var(--fs-sm);
  color: var(--c-text-2);
}

/* ----- 20. 时间线 ----- */
.timeline { position: relative; max-width: 800px; margin: 0 auto; }
.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--c-border);
  transform: translateX(-50%);
}
.timeline-item {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--sp-6);
  margin-bottom: var(--sp-8);
  align-items: center;
}
.timeline-year {
  font-size: var(--fs-2xl);
  font-weight: 800;
  color: var(--c-primary);
  text-align: right;
  transition: all 0.3s;
}
.timeline-item:hover .timeline-year {
  color: var(--c-accent);
  transform: scale(1.1);
}
.timeline-item:nth-child(even) .timeline-year { text-align: left; grid-column: 3; }
.timeline-item:nth-child(even) .timeline-content { grid-column: 1; grid-row: 1; text-align: right; }
.timeline-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-gradient-start), var(--c-gradient-end));
  box-shadow: 0 0 0 4px #fff, 0 0 0 6px var(--c-gradient-start);
  z-index: 1;
  transition: all 0.3s;
}
.timeline-item:hover .timeline-dot {
  transform: scale(1.5);
  box-shadow: 0 0 0 4px #fff, 0 0 0 8px var(--c-accent);
}
.timeline-content {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: var(--sp-5);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
}
.timeline-content:hover {
  border-color: var(--c-primary);
  box-shadow: 0 8px 20px rgba(91, 110, 225, 0.1);
  transform: translateY(-2px);
}
.timeline-content h4 {
  font-size: var(--fs-lg);
  font-weight: 700;
  margin-bottom: var(--sp-2);
}
.timeline-content p {
  font-size: var(--fs-sm);
  color: var(--c-text-2);
  line-height: 1.6;
}

/* ----- 21. 联系页 ----- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-10);
  align-items: start;
}
.contact-info-card {
  background: linear-gradient(135deg, var(--c-bg-dark), #1E293B);
  color: #fff;
  border-radius: var(--r-xl);
  padding: var(--sp-10);
  position: relative;
  overflow: hidden;
  transition: transform 0.4s;
}
.contact-info-card:hover { transform: translateY(-4px); }
.contact-info-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--r-xl);
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), rgba(91, 110, 225, 0.15), transparent 40%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
.contact-info-card:hover::after { opacity: 1; }
.contact-info-card::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(91, 110, 225, 0.3), transparent 70%);
  filter: blur(40px);
}
.contact-info-card-inner { position: relative; z-index: 1; }
.contact-info-card h2 {
  font-size: var(--fs-3xl);
  font-weight: 800;
  margin-bottom: var(--sp-3);
}
.contact-info-card p {
  color: #CBD5E1;
  margin-bottom: var(--sp-8);
  line-height: 1.7;
}
.contact-method {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-4) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s;
  border-radius: var(--r-md);
  padding-left: var(--sp-3);
  padding-right: var(--sp-3);
  margin-left: calc(-1 * var(--sp-3));
  margin-right: calc(-1 * var(--sp-3));
  cursor: pointer;
}
.contact-method:hover {
  background: rgba(91, 110, 225, 0.08);
  transform: translateX(4px);
}
.contact-method:hover .contact-method-icon {
  background: linear-gradient(135deg, var(--c-gradient-start), var(--c-gradient-end));
  transform: scale(1.1) rotate(-5deg);
}
.contact-method:hover .contact-method-value { color: #FBBF24; }
.contact-method:last-of-type { border-bottom: none; }
.contact-method-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--r-md);
  background: rgba(91, 110, 225, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.contact-method-label {
  font-size: var(--fs-xs);
  color: #94A3B8;
  margin-bottom: 2px;
}
.contact-method-value {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: #fff;
  transition: color 0.3s;
}

.contact-qr-section {
  margin-top: var(--sp-8);
  padding: var(--sp-5);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--r-lg);
  display: flex;
  gap: var(--sp-4);
  align-items: center;
}
.contact-qr-img {
  width: 120px;
  height: 120px;
  background: #fff;
  border-radius: var(--r-md);
  padding: 6px;
  flex-shrink: 0;
}
.contact-qr-img img { width: 100%; height: 100%; object-fit: contain; }
.contact-qr-text strong {
  display: block;
  font-size: var(--fs-lg);
  margin-bottom: 4px;
}
.contact-qr-text p {
  font-size: var(--fs-sm);
  color: #CBD5E1;
  margin: 0;
  line-height: 1.5;
}

.contact-form {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--r-xl);
  padding: var(--sp-10);
}
.contact-form h3 {
  font-size: var(--fs-2xl);
  font-weight: 800;
  margin-bottom: var(--sp-2);
}
.contact-form-desc {
  color: var(--c-text-2);
  font-size: var(--fs-sm);
  margin-bottom: var(--sp-6);
  line-height: 1.6;
}
.form-group { margin-bottom: var(--sp-4); }
.form-label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 600;
  margin-bottom: var(--sp-2);
  transition: color 0.2s;
}
.form-label .required { color: var(--c-accent); }
.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  font-size: var(--fs-base);
  background: var(--c-bg-soft);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.form-input:hover, .form-textarea:hover, .form-select:hover {
  border-color: rgba(91, 110, 225, 0.3);
  background: #fff;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--c-primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(30, 64, 175, 0.1),
              0 4px 12px rgba(30, 64, 175, 0.08);
  transform: translateY(-1px);
}
.form-group:focus-within .form-label { color: var(--c-primary); }
.form-textarea {
  resize: vertical;
  min-height: 100px;
  font-family: inherit;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
}
.form-submit {
  width: 100%;
  margin-top: var(--sp-4);
  padding: 16px;
  font-size: var(--fs-base);
}
.form-privacy {
  font-size: var(--fs-xs);
  color: var(--c-text-3);
  text-align: center;
  margin-top: var(--sp-3);
}

/* ----- 22. 响应式 ----- */
@media (max-width: 1024px) {
  .hero h1 { font-size: var(--fs-4xl); }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-card { max-width: 480px; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .cred-grid { grid-template-columns: repeat(3, 1fr); }
  .stat-wall { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: var(--sp-6); }
  .process-grid::before { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  :root {
    --fs-4xl: 28px;
    --fs-5xl: 32px;
    --fs-6xl: 36px;
  }
  section { padding: var(--sp-12) 0; }
  .container, .container-narrow { padding: 0 var(--sp-4); }
  .nav-menu { display: none; }
  .nav-cta .nav-phone { display: none; }
  .nav-mobile-toggle { display: flex; }
  .hero { padding: var(--sp-16) 0 var(--sp-12); }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; }
  .hero-trust { gap: var(--sp-5); }
  .hero-trust-num { font-size: var(--fs-2xl); }
  .section-title { font-size: var(--fs-3xl); }
  .section-subtitle { font-size: var(--fs-base); }
  .services-grid { grid-template-columns: 1fr 1fr; }
  .case-stats { flex-wrap: wrap; gap: var(--sp-3); }
  .cred-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: var(--sp-6); }
  .form-row { grid-template-columns: 1fr; }
  .page-hero { padding: var(--sp-12) 0; }
  .stat-wall { grid-template-columns: 1fr 1fr; }
  .timeline::before { left: 20px; }
  .timeline-item { grid-template-columns: 40px 1fr; }
  .timeline-year { text-align: left; grid-column: 2 !important; font-size: var(--fs-xl); }
  .timeline-dot { grid-column: 1; }
  .timeline-content { grid-column: 2 !important; text-align: left !important; }
  .timeline-item:nth-child(even) .timeline-year { grid-column: 2; }
  .timeline-item:nth-child(even) .timeline-content { grid-column: 2; }
  .floating-cta { right: 12px; bottom: 12px; }
  .float-btn { width: 48px; height: 48px; font-size: 10px; }
  .float-btn .icon { font-size: 18px; }
  .contact-info-card, .contact-form { padding: var(--sp-6); }
}
@media (max-width: 480px) {
  .services-grid { grid-template-columns: 1fr; }
  .stat-wall { grid-template-columns: 1fr; }
  .cred-grid { grid-template-columns: 1fr 1fr; }
  .hero-card { padding: var(--sp-5); }
  .hero-card-phone { font-size: var(--fs-2xl); }
  .contact-qr-section { flex-direction: column; text-align: center; }
}