/* ===========================================
   奥创跨境官网 - 视觉系统 V5
   设计语言：国际化时尚蓝白双色调
   色彩：品牌蓝 + 灰白中性（仅两种色相）
   排版：超大标题 + 细字间距
   =========================================== */

:root {
  /* 中性色系 - 极简 */
  --bg: #ffffff;
  --bg-soft: #f4f7fd;        /* 淡蓝灰区段背景 */
  --bg-section: #fafbfe;     /* 极浅蓝白 */
  --bg-dark: #0047d6;        /* 品牌蓝深色块（原黑） */
  --bg-deep: #0033a8;        /* 品牌蓝加深 */

  /* 文字 */
  --text: #1a2233;
  --text-2: #5c6b85;         /* 次要文字（蓝灰） */
  --text-3: #9aa7bd;         /* 弱文字（蓝灰） */
  --text-invert: #f5f8ff;

  /* 线条 */
  --line: #d4dbe9;
  --line-soft: #e7ecf5;

  /* 品牌主色 - Logo 主题蓝 */
  --brand: #0058ff;          /* Logo 主色蓝 */
  --brand-hover: #0047cc;
  --brand-soft: #e8f0ff;
  --brand-deep: #041634;     /* 深海蓝，数字主色 */
  --brand-light: #3b9bff;    /* 亮天蓝高光 */

  /* ===========================================
     单一蓝色阶 —— 全站仅一个色相，靠深浅渐变造层次
     =========================================== */
  --blue-900: #041634;       /* 深海蓝 · 标题/数字最深 */
  --blue-800: #082a63;       /* 海军蓝 */
  --blue-700: #0b3fa8;       /* 宝蓝 */
  --blue-600: #0058ff;       /* 电光蓝 · 品牌主色 */
  --blue-500: #2e7bff;       /* 亮蓝 */
  --blue-400: #56a2ff;       /* 天蓝 */
  --blue-300: #8ec4ff;       /* 浅天蓝 */
  --blue-200: #c6e0ff;       /* 淡蓝 */
  --blue-100: #e6f0ff;       /* 极淡蓝 */
  --blue-50:  #f3f8ff;       /* 蓝白 */

  /* 强调色 —— 同色相内提亮（青蓝），仅用于极小面积点缀 */
  --accent: #00b4ff;

  /* 尺寸 */
  --max-width: 1280px;
  --header-h: 72px;
  --section-py: 140px;
  --radius: 0;               /* 极简：方角 */
  --radius-md: 8px;

  /* 字体 */
  --font-sans: "Inter", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", system-ui, sans-serif;
  --font-num: "Inter", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "tnum" 1, "kern" 1;
}
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea, select { font-family: inherit; }

/* ============= 容器 ============= */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============= 顶部导航 ============= */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line-soft);
  z-index: 100;
  transition: background 0.3s;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
  overflow: visible;
}
.logo img {
  height: 54px;
  width: auto;
  max-width: 320px;
  object-fit: contain;
  display: block;
}
.footer-brand .logo img {
  height: 64px;
  max-width: 360px;
}

/* 主导航 */
.nav {
  display: flex;
  align-items: center;
  gap: 36px;
  height: 100%;
  margin-left: 60px;
  flex: 1;
}
.nav-item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}
.nav-link {
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 4px;
  position: relative;
  height: 100%;
  padding: 0 2px;
  letter-spacing: 0.01em;
  transition: color 0.2s;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 50%; right: 50%;
  bottom: 18px;
  height: 1.5px;
  background: var(--brand);
  transition: left 0.3s, right 0.3s;
}
.nav-item:hover .nav-link::after,
.nav-link.active::after {
  left: 0; right: 0;
}
.nav-link .caret {
  width: 9px; height: 9px;
  transition: transform 0.2s;
}
.nav-item:hover .caret { transform: rotate(180deg); }

/* 巨型下拉菜单 - 保时捷风 */
.mega {
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(30px);
  border-bottom: 1px solid var(--line-soft);
  padding: 56px 0 64px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.3s, transform 0.3s, visibility 0.3s;
  pointer-events: none;
  z-index: 99;
}
.nav-item:hover .mega {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}
.mega-grid {
  display: grid;
  grid-template-columns: 220px repeat(3, 1fr);
  gap: 56px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.mega-side {
  border-right: 1px solid var(--line-soft);
  padding-right: 32px;
}
.mega-eyebrow {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--text-3);
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 14px;
}
.mega-title {
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.mega-sub {
  font-size: 14px;
  color: var(--text-2);
  margin-top: 12px;
  line-height: 1.6;
}
.mega-col h5 {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 600;
  margin-bottom: 18px;
}
.mega-col ul { display: flex; flex-direction: column; gap: 14px; }
.mega-col a {
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
  display: block;
  transition: color 0.2s, transform 0.2s;
  letter-spacing: -0.01em;
}
.mega-col a:hover { color: var(--brand); transform: translateX(2px); }
.mega-col a small {
  display: block;
  font-size: 12px;
  color: var(--text-3);
  font-weight: 400;
  margin-top: 2px;
}

/* 头部操作 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.icon-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  color: var(--text);
  transition: background 0.2s;
}
.icon-btn:hover { background: var(--bg-soft); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 980px;
  transition: all 0.2s;
  letter-spacing: 0.01em;
  cursor: pointer;
  white-space: nowrap;
}
.btn-dark {
  background: var(--brand);
  color: white;
}
.btn-dark:hover { background: var(--brand-hover); }
.btn-light {
  background: white;
  color: var(--text);
  border: 1px solid var(--line);
}
.btn-light:hover { background: var(--bg-soft); }
.btn-text {
  color: var(--brand);
  padding: 0;
  font-size: 14px;
}
.btn-text:hover .arrow { transform: translateX(4px); }
.arrow { transition: transform 0.2s; }

/* 填充图标组件：蓝色圆形底 + 白色图标 */
.icon-fill {
  width: 52px; height: 52px;
  flex-shrink: 0;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--blue-800) 0%, var(--brand) 52%, var(--blue-400) 100%);
  color: white;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 24px rgba(0, 88, 255, 0.24);
  border: 1px solid rgba(255, 255, 255, 0.22);
  transition: all 0.25s;
}
.icon-fill svg { width: 26px; height: 26px; stroke-width: 2; }
.icon-fill:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(0, 88, 255, 0.28); }
.icon-fill.sm { width: 44px; height: 44px; border-radius: 12px; }
.icon-fill.sm svg { width: 22px; height: 22px; }
.icon-fill.lg { width: 64px; height: 64px; border-radius: 16px; }
.icon-fill.lg svg { width: 30px; height: 30px; }
.icon-fill.circle { border-radius: 50%; }
.icon-fill.light {
  background: linear-gradient(135deg, var(--blue-50) 0%, var(--blue-100) 100%);
  color: var(--blue-700);
  box-shadow: 0 6px 18px rgba(0, 88, 255, 0.14);
  border: 1px solid rgba(0, 88, 255, 0.18);
}
.icon-fill.light:hover { box-shadow: 0 10px 26px rgba(0, 88, 255, 0.22); }

.mobile-menu-btn { display: none; }

/* ============= Hero ============= */
.hero {
  padding-top: calc(var(--header-h) + 60px);
  padding-bottom: 64px;
  position: relative;
  background:
    radial-gradient(1200px 620px at 82% -8%, rgba(0, 88, 255, 0.14), transparent 60%),
    radial-gradient(720px 520px at 100% 40%, rgba(0, 88, 255, 0.12), transparent 55%),
    radial-gradient(900px 500px at -10% 40%, rgba(0, 88, 255, 0.09), transparent 55%),
    radial-gradient(700px 700px at 50% 120%, rgba(0, 88, 255, 0.05), transparent 50%),
    linear-gradient(180deg, #f5f8ff 0%, #ffffff 58%, #eef3fc 100%);
  overflow: hidden;
}
/* 蓝天白云装饰层 */
.hero-sky {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 82% 12%, rgba(255,255,255,0.9) 0%, rgba(230,245,255,0.6) 18%, transparent 40%),
    radial-gradient(circle at 68% 18%, rgba(210,235,255,0.55) 0%, transparent 28%),
    radial-gradient(circle at 95% 28%, rgba(190,225,255,0.35) 0%, transparent 22%),
    linear-gradient(112deg, transparent 42%, rgba(0, 88, 255, 0.10) 48%, transparent 56%),
    linear-gradient(112deg, transparent 70%, rgba(0, 88, 255, 0.08) 76%, transparent 84%);
}
.hero-sky::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at center, rgba(0, 88, 255, 0.14) 1px, transparent 1.5px);
  background-size: 30px 30px;
  background-position: 15px 15px;
  opacity: 0.35;
  mask-image: linear-gradient(180deg, #000 0%, transparent 55%);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 55%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brand);
  font-weight: 600;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero-eyebrow::before {
  content: "";
  display: inline-block;
  width: 32px; height: 2px;
  background: linear-gradient(90deg, var(--brand), var(--brand-light));
}
.hero-title {
  font-size: clamp(44px, 6vw, 78px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin-bottom: 18px;
  color: var(--text);
}
.hero-title .accent {
  display: block;
  font-weight: 700;
  font-size: 1.05em;
  letter-spacing: -0.02em;
  margin-top: 2px;
  background: linear-gradient(135deg, var(--blue-800) 0%, var(--blue-500) 42%, var(--blue-300) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero-sub {
  font-size: 20px;
  font-weight: 500;
  color: var(--brand);
  margin-bottom: 22px;
  letter-spacing: 0.12em;
}
.hero-desc {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-2);
  max-width: 520px;
  margin-bottom: 38px;
}
.hero-actions {
  display: flex;
  gap: 16px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--brand) 0%, #0066ff 100%);
  color: white;
  padding: 14px 28px;
  border-radius: 980px;
  font-size: 15px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
  box-shadow: 0 10px 28px rgba(0, 88, 255, 0.28);
}
.btn-primary:hover { background: linear-gradient(135deg, var(--brand-hover) 0%, #0052cc 100%); transform: translateY(-1px); }
.btn-secondary {
  background: white;
  color: var(--text);
  padding: 14px 28px;
  border-radius: 980px;
  font-size: 15px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--brand);
  transition: all 0.2s;
}
.btn-secondary:hover { background: var(--brand); color: white; }

/* 视觉 */
.hero-visual {
  position: relative;
  aspect-ratio: 16 / 10.4;
  width: 100%;
  border-radius: 20px;
  overflow: hidden;
  /* 场景天空底色（原 SVG 渐变迁移至此，为 canvas 地球让出底层） */
  background:
    radial-gradient(560px 380px at 88% -6%, rgba(255, 246, 214, 0.55), transparent 60%),
    linear-gradient(180deg, #1257c9 0%, #2a74e2 24%, #5598f0 50%, #8dc2f9 74%, #cfe6fd 100%);
  box-shadow:
    0 24px 70px rgba(0, 88, 255, 0.18),
    0 0 0 1px rgba(0, 88, 255, 0.08);
}
.hero-visual svg { width: 100%; height: 100%; display: block; }

/* Hero 底部四大服务入口 */
.hero-services {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  position: relative;
  z-index: 2;
}
.hero-service {
  background: linear-gradient(135deg, #0058ff 0%, #0047d6 100%);
  color: white;
  border-radius: 14px;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all 0.25s;
  box-shadow: 0 10px 28px rgba(0, 88, 255, 0.22);
}
.hero-service:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 38px rgba(0, 88, 255, 0.28);
}
.hero-service .ic {
  width: 42px; height: 42px;
  flex-shrink: 0;
  background: rgba(255,255,255,0.18);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: white;
}
.hero-service .t {
  display: flex; flex-direction: column; gap: 2px;
}
.hero-service .t strong {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.005em;
}
.hero-service .t small {
  font-size: 12px;
  color: rgba(255,255,255,0.75);
}

/* 平台 Marquee */
.marquee-track {
  display: flex;
  gap: 56px;
  animation: marquee 30s linear infinite;
  width: max-content;
  align-items: center;
}
.marquee-track span {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-2);
  white-space: nowrap;
  letter-spacing: -0.005em;
}
@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ============= 通用 Section ============= */
.section {
  padding: var(--section-py) 0;
  position: relative;
}
.section-soft {
  background:
    radial-gradient(1200px 600px at 110% 5%, rgba(0, 88, 255, 0.10), transparent 55%),
    radial-gradient(900px 500px at -10% 95%, rgba(0, 88, 255, 0.06), transparent 55%),
    radial-gradient(700px 700px at 50% 50%, rgba(255, 255, 255, 0.4), transparent 70%),
    var(--bg-soft);
  position: relative;
  overflow: hidden;
}
.section-soft::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 88, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 88, 255, 0.05) 1px, transparent 1px);
  background-size: 88px 88px;
  background-position: -1px -1px;
  pointer-events: none;
  opacity: 0.85;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 100%);
}
.section-soft::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at center, rgba(0, 88, 255, 0.18) 1px, transparent 1.5px);
  background-size: 28px 28px;
  background-position: 14px 14px;
  pointer-events: none;
  opacity: 0.35;
  mask-image: linear-gradient(180deg, black, transparent 70%);
  -webkit-mask-image: linear-gradient(180deg, black, transparent 70%);
}
.section-white { background: var(--bg); }
.section-dark {
  background: linear-gradient(135deg, #0058ff 0%, #0047d6 55%, #0033a8 100%);
  color: var(--text-invert);
  position: relative;
}
.section-dark::before {
  content: "";
  position: absolute;
  top: -180px; right: -120px;
  width: 480px; height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.14) 0%, transparent 70%);
  pointer-events: none;
}
.section-dark::after {
  content: "";
  position: absolute;
  bottom: -220px; left: -140px;
  width: 520px; height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,204,255,0.16) 0%, transparent 70%);
  pointer-events: none;
}
.section-dark .section-eyebrow { color: var(--text-3); }
.section-dark .section-title { color: white; }
.section-dark .section-desc { color: rgba(255,255,255,0.65); }

.section-header {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 88px;
}
.section-eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-2);
  font-weight: 500;
  margin-bottom: 18px;
}
.section-title {
  font-size: clamp(36px, 4.5vw, 60px);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 24px;
}
.section-title em {
  font-style: italic;
  font-weight: 500;
  background: linear-gradient(120deg, var(--brand) 0%, var(--blue-500) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.section-desc {
  font-size: 19px;
  line-height: 1.6;
  color: var(--text-2);
  max-width: 720px;
  margin: 0 auto;
  font-weight: 400;
}
.section-header.left {
  text-align: left;
  margin-left: 0;
}
.section-header.left .section-desc { margin-left: 0; }

/* ============= 三大体系 - 大块卡片 ============= */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.pillar {
  padding: 52px 40px 56px;
  border-right: 1px solid var(--line-soft);
  position: relative;
  transition: background 0.3s;
  cursor: pointer;
}
.pillar:last-child { border-right: none; }
.pillar:hover { background: var(--bg-soft); }
.pillar .icon-fill {
  margin-bottom: 28px;
}
.pillar-num {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: 0.15em;
  margin-bottom: 56px;
}
.pillar h3 {
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 16px;
  color: var(--text);
}
.pillar p {
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.65;
  margin-bottom: 32px;
  min-height: 78px;
}
.pillar-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--brand);
  font-weight: 500;
}
.pillar:hover .pillar-link .arrow { transform: translateX(4px); }
.pillar-link .arrow { transition: transform 0.2s; }

/* ============= 业务矩阵 - 4列大块 ============= */
.matrix {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}
.matrix-item {
  background:
    radial-gradient(280px 280px at 110% -10%, rgba(0, 88, 255, 0.06), transparent 55%),
    var(--bg);
  padding: 60px 48px;
  display: flex;
  flex-direction: column;
  min-height: 320px;
  transition: all 0.3s;
  cursor: pointer;
  position: relative;
}
.matrix-item::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 88, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 88, 255, 0.02) 1px, transparent 1px);
  background-size: 80px 80px;
  background-position: -1px -1px;
  pointer-events: none;
  opacity: 0.8;
}
.matrix-item:hover {
  background:
    radial-gradient(320px 320px at 110% -10%, rgba(0, 88, 255, 0.10), transparent 55%),
    var(--bg-soft);
}
.matrix-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}
.matrix-num {
  font-size: 52px;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  font-family: var(--font-num);
  background: linear-gradient(135deg, var(--blue-800) 0%, var(--blue-500) 45%, var(--blue-300) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  display: inline-block;
}
.matrix-item h3 {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  line-height: 1.2;
}
.matrix-item h3 .en {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: 0.18em;
  margin-top: 4px;
}
.matrix-item p {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.6;
  margin-top: 16px;
  margin-bottom: 24px;
  flex: 1;
}
.matrix-item ul { display: flex; flex-direction: column; gap: 8px; }
.matrix-item li {
  font-size: 14px;
  color: var(--text-2);
  padding-left: 18px;
  position: relative;
  line-height: 1.55;
}
.matrix-item li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 8px; height: 1px;
  background: var(--text-3);
}

/* ============= 数据 - 大数字 ============= */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  position: relative;
  overflow: hidden;
}
.stats::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at center, rgba(0, 88, 255, 0.15) 1px, transparent 1.4px);
  background-size: 22px 22px;
  opacity: 0.45;
  pointer-events: none;
  mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
}
.stat {
  padding: 64px 32px;
  text-align: left;
  border-right: 1px solid var(--line-soft);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.stat::after {
  /* 右上角品牌蓝+金渐变光晕 */
  content: "";
  position: absolute;
  top: -40%; right: -20%;
  width: 240px; height: 240px;
  background:
    radial-gradient(circle, rgba(0, 88, 255, 0.12) 0%, transparent 58%),
    radial-gradient(circle at 70% 30%, rgba(0, 88, 255, 0.10) 0%, transparent 46%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}
.stat::before {
  content: "01";
  position: absolute;
  right: 18px; bottom: -12px;
  font-size: 120px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.06em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 88, 255, 0.30);
  text-stroke: 1px rgba(0, 88, 255, 0.30);
  font-family: var(--font-num);
  pointer-events: none;
  z-index: 0;
}
.stat:nth-child(2)::before { content: "02"; }
.stat:nth-child(3)::before { content: "03"; }
.stat:nth-child(4)::before { content: "04"; }
.stat > * { position: relative; z-index: 1; }
.stat:last-child { border-right: none; }
.stat-n {
  font-size: clamp(64px, 7vw, 110px);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1;
  font-family: var(--font-num);
  margin-bottom: 16px;
  display: flex;
  align-items: baseline;
  gap: 4px;
  background: linear-gradient(160deg, #00155a 0%, #0058ff 58%, #3b9bff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  text-shadow: 0 0 42px rgba(0, 88, 255, 0.18);
}
.stat-n .plus {
  font-size: 0.45em;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--blue-800) 0%, var(--blue-500) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  display: inline-block;
  transform: translateY(-0.45em);
}
.stat-n .prefix, .stat-n .suffix {
  font-size: 0.45em;
  font-weight: 600;
  background: linear-gradient(135deg, var(--blue-800) 0%, var(--blue-500) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  letter-spacing: 0.02em;
}
.stat-l {
  font-size: 15px;
  color: var(--text-2);
  font-weight: 500;
  letter-spacing: 0.005em;
}
.stat-tag {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue-500);
  margin-bottom: 14px;
  font-weight: 600;
  position: relative;
  padding-left: 18px;
}
.stat-tag::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 10px; height: 1.5px;
  background: var(--blue-500);
  transform: translateY(-50%);
}

/* ============= 核心优势 ============= */
.advantages {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.advantage {
  background: var(--bg);
  padding: 40px 32px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  transition: all 0.3s;
}
.advantage:hover {
  border-color: var(--brand);
  transform: translateY(-2px);
}
.advantage .icon-fill { margin-bottom: 20px; }
.advantage h4 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.advantage p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
}

/* ============= 全球网络 - 地图 ============= */
.global {
  background: linear-gradient(135deg, #0058ff 0%, #0047d6 55%, #0033a8 100%);
  color: white;
  position: relative;
  overflow: hidden;
}
.global .container { position: relative; z-index: 2; }
.global-header { text-align: left; max-width: 720px; margin-bottom: 60px; }
.global-header .section-eyebrow { color: rgba(255,255,255,0.65); }
.global-header .section-title { color: white; }
.global-header .section-desc { color: rgba(255,255,255,0.65); }

.global-map {
  width: 100%;
  height: 480px;
  position: relative;
  background: #0033a8;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.16);
}
.global-map svg { width: 100%; height: 100%; }
.global-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.16);
  margin-top: 32px;
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 12px;
  overflow: hidden;
}
.global-list .item {
  background: rgba(0, 24, 88, 0.35);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.global-list .item .flag {
  font-size: 28px;
  margin-bottom: 8px;
}
.global-list .item .city {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.global-list .item .label {
  font-size: 12px;
  color: rgba(255,255,255,0.65);
  letter-spacing: 0.05em;
}

/* ============= 案例 - 横向轮播 ============= */
.cases-wrap {
  position: relative;
  margin: 0 -24px;
  padding: 0 24px;
}
.cases-track {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding-bottom: 16px;
}
.cases-track::-webkit-scrollbar { display: none; }
.case-card {
  flex: 0 0 calc((100% - 48px) / 3);
  min-width: 320px;
  background:
    radial-gradient(320px 320px at 110% -10%, rgba(0, 88, 255, 0.05), transparent 55%),
    var(--bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
  scroll-snap-align: start;
  transition: all 0.35s;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  position: relative;
}
.case-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand), transparent);
  opacity: 0;
  transition: opacity 0.35s;
}
.case-card:hover {
  border-color: var(--brand);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 88, 255, 0.10);
}
.case-card:hover::before { opacity: 1; }
.case-image {
  height: 220px;
  background: var(--bg-soft);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  overflow: hidden;
}
.case-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, transparent 40%, rgba(0, 88, 255, 0.06) 100%),
    linear-gradient(0deg, rgba(0, 88, 255, 0.03), transparent 60%);
}
.case-content { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.case-tag {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brand);
  font-weight: 600;
  margin-bottom: 12px;
}
.case-content h3 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-bottom: 10px;
  line-height: 1.3;
}
.case-content p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
  flex: 1;
}
.case-content .more {
  margin-top: 20px;
  font-size: 13px;
  color: var(--text);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.case-card:hover .case-content .more .arrow { transform: translateX(4px); }
.case-content .more .arrow { transition: transform 0.2s; }

.cases-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 40px;
  gap: 24px;
}
.cases-progress {
  flex: 1;
  height: 1px;
  background: var(--line-soft);
  position: relative;
  overflow: hidden;
}
.cases-progress::after {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 33.333%;
  background: var(--brand);
  transition: transform 0.3s;
}
.cases-btns { display: flex; gap: 8px; flex-shrink: 0; }
.cases-btn {
  width: 48px; height: 48px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: white;
  transition: all 0.2s;
}
.cases-btn:hover { background: var(--brand); color: white; border-color: var(--brand); }
.cases-btn:disabled { opacity: 0.3; cursor: not-allowed; }

/* ============= 合作伙伴 Marquee ============= */
.partners-wrap {
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  padding: 56px 0;
  overflow: hidden;
  background: var(--bg);
}
.partners-track {
  display: flex;
  gap: 80px;
  animation: marquee 40s linear infinite;
  width: max-content;
  align-items: center;
}
.partner-logo {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-2);
  letter-spacing: -0.01em;
  white-space: nowrap;
  flex-shrink: 0;
  transition: color 0.3s;
}
.partner-logo:hover { color: var(--text); }

/* ============= 实操课程 - 品牌蓝块 ============= */
.practical {
  background: linear-gradient(135deg, #0058ff 0%, #0047d6 55%, #0033a8 100%);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.practical::before {
  content: "";
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(0,80,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.practical-eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.65);
  margin-bottom: 18px;
}
.practical-title {
  font-size: clamp(40px, 5vw, 72px);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.08;
  margin-bottom: 24px;
  color: white;
  max-width: 880px;
  margin-left: auto;
  margin-right: auto;
}
.practical-title em {
  font-style: italic;
  font-weight: 500;
  color: rgba(255,255,255,0.65);
}
.practical-desc {
  font-size: 19px;
  color: rgba(255,255,255,0.65);
  line-height: 1.6;
  max-width: 720px;
  margin: 0 auto 56px;
}
.practical-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.16);
  border: 1px solid rgba(255,255,255,0.16);
  max-width: 980px;
  margin: 0 auto 48px;
}
.practical-item {
  background: rgba(0, 24, 88, 0.35);
  padding: 36px 28px;
  text-align: left;
}
.practical-item .icon-fill {
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 0%, #e8f4ff 100%);
  color: var(--brand);
  box-shadow: 0 6px 18px rgba(0,0,0,0.12);
}
.practical-item h4 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}
.practical-item p {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  line-height: 1.55;
}

/* ============= 页脚 ============= */
.footer {
  background: var(--bg-soft);
  padding: 80px 0 32px;
  border-top: 1px solid var(--line-soft);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr;
  gap: 56px;
  margin-bottom: 64px;
}
.footer-brand .logo img { height: 64px; margin-bottom: 24px; }
.footer-brand p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.65;
  max-width: 320px;
  margin-bottom: 24px;
}
.footer-brand .badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-brand .badge {
  font-size: 11px;
  padding: 5px 10px;
  background: white;
  border: 1px solid var(--line-soft);
  border-radius: 4px;
  color: var(--text-2);
}
.footer-col h5 {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text);
  font-weight: 600;
  margin-bottom: 20px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col a {
  font-size: 14px;
  color: var(--text-2);
  transition: color 0.2s;
  display: block;
}
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  color: var(--text-3);
  flex-wrap: wrap;
  gap: 16px;
}
.social-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.social-list a {
  width: 36px; height: 36px;
  border: 1px solid var(--line-soft);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  transition: all 0.2s;
  background: white;
}
.social-list a:hover {
  background: var(--brand);
  color: white;
  border-color: var(--brand);
  transform: translateY(-2px);
}

/* ============= AI 客服 ============= */
.ai-launcher {
  position: fixed;
  bottom: 28px; right: 28px;
  width: 60px; height: 60px;
  background: var(--brand);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  transition: transform 0.2s, background 0.2s;
}
.ai-launcher:hover { transform: scale(1.05); background: var(--brand); }
.ai-launcher .badge {
  position: absolute;
  top: -4px; right: -4px;
  min-width: 22px; height: 22px;
  background: #ff3b30;
  color: white;
  border-radius: 11px;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 6px;
  border: 2px solid white;
}
.ai-window {
  position: fixed;
  bottom: 100px; right: 28px;
  width: 380px;
  max-width: calc(100vw - 32px);
  height: 540px;
  max-height: calc(100vh - 140px);
  background: white;
  border-radius: 18px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2), 0 0 0 1px rgba(0,0,0,0.05);
  z-index: 199;
  display: none;
  flex-direction: column;
  overflow: hidden;
  animation: aiIn 0.3s ease;
}
.ai-window.open { display: flex; }
@keyframes aiIn {
  from { opacity: 0; transform: translateY(10px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.ai-header {
  padding: 18px 20px;
  background: linear-gradient(120deg, #0058ff 0%, #0047d6 100%);
  color: white;
  display: flex;
  align-items: center;
  gap: 12px;
}
.ai-avatar {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, #0050ff, #00a3ff);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.ai-info { flex: 1; }
.ai-info h4 { font-size: 15px; font-weight: 600; margin-bottom: 2px; }
.ai-info p { font-size: 11px; color: rgba(255,255,255,0.65); display: flex; align-items: center; gap: 4px; }
.ai-info p::before {
  content: "";
  width: 6px; height: 6px;
  background: #00d672;
  border-radius: 50%;
  display: inline-block;
}
.ai-close {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.2s;
}
.ai-close:hover { background: rgba(255,255,255,0.1); }
.ai-body {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--bg-soft);
}
.ai-msg { display: flex; gap: 10px; max-width: 85%; }
.ai-msg.bot { align-self: flex-start; }
.ai-msg.user { align-self: flex-end; flex-direction: row-reverse; }
.ai-msg-avatar {
  width: 30px; height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  background: var(--brand);
  color: white;
  flex-shrink: 0;
}
.ai-msg.user .ai-msg-avatar { background: var(--brand); }
.ai-msg-bubble {
  padding: 10px 14px;
  background: white;
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}
.ai-msg.user .ai-msg-bubble { background: var(--brand); color: white; }
.ai-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}
.ai-quick button {
  font-size: 12px;
  padding: 6px 12px;
  background: white;
  border: 1px solid var(--line-soft);
  border-radius: 16px;
  color: var(--text);
  transition: all 0.2s;
}
.ai-quick button:hover { background: var(--brand); color: white; border-color: var(--brand); }
.ai-input {
  padding: 14px 16px;
  display: flex;
  gap: 8px;
  border-top: 1px solid var(--line-soft);
  background: white;
}
.ai-input input {
  flex: 1;
  border: 1px solid var(--line-soft);
  border-radius: 20px;
  padding: 10px 16px;
  font-size: 14px;
  outline: none;
  transition: border 0.2s;
  background: var(--bg-soft);
}
.ai-input input:focus { border-color: var(--brand); background: white; }
.ai-input button {
  width: 40px; height: 40px;
  background: var(--brand);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.2s;
}
.ai-input button:hover { background: var(--brand); }

/* ============= 内页头部 ============= */
.page-header {
  padding-top: calc(var(--header-h) + 100px);
  padding-bottom: 80px;
  background:
    radial-gradient(1000px 480px at 90% -20%, rgba(0, 88, 255, 0.10), transparent 60%),
    radial-gradient(600px 600px at -10% 100%, rgba(0, 88, 255, 0.05), transparent 50%),
    linear-gradient(180deg, #fafbfe 0%, #ffffff 100%);
  text-align: left;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 88, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 88, 255, 0.03) 1px, transparent 1px);
  background-size: 120px 120px;
  background-position: -1px -1px;
  pointer-events: none;
  opacity: 0.7;
}
.page-header .container { position: relative; z-index: 1; }
.page-header .eyebrow {
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-2);
  font-weight: 500;
  margin-bottom: 16px;
  display: block;
}
.page-header h1 {
  font-size: clamp(40px, 5.5vw, 80px);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.05;
  margin-bottom: 24px;
}
.page-header p {
  font-size: 21px;
  color: var(--text-2);
  line-height: 1.5;
  max-width: 720px;
  font-weight: 400;
}
.page-header.dark {
  background: linear-gradient(135deg, #0058ff 0%, #0047d6 55%, #0033a8 100%);
  color: white;
}
.page-header.dark h1, .page-header.dark .eyebrow { color: white; }
.page-header.dark .eyebrow { color: rgba(255,255,255,0.65); }
.page-header.dark p { color: rgba(255,255,255,0.65); }

/* ============= 两栏布局 ============= */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.two-col.reverse { direction: rtl; }
.two-col.reverse > * { direction: ltr; }
.two-col-content .label {
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--brand);
  font-weight: 600;
  margin-bottom: 16px;
  display: block;
}
.two-col-content h2 {
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin-bottom: 24px;
}
.two-col-content p {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-2);
  margin-bottom: 16px;
}
.two-col-image {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #e8f4ff 0%, #d0e8ff 50%, #b8dcff 100%);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.two-col-image::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(255,255,255,0.6) 0%, transparent 25%),
    radial-gradient(circle at 80% 70%, rgba(0,88,255,0.06) 0%, transparent 30%);
  pointer-events: none;
}
.two-col-image img { width: 100%; height: 100%; object-fit: cover; }
.two-col-image .ph {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--brand);
  font-size: 13px;
  letter-spacing: 0.12em;
  font-weight: 600;
  text-align: center;
  padding: 20px;
  position: relative;
  z-index: 1;
}
.two-col-image .ph .icon-fill {
  margin-bottom: 18px;
  width: 72px; height: 72px;
  border-radius: 18px;
}
.two-col-image .ph .icon-fill svg { width: 34px; height: 34px; }
.two-col-image .ph svg { margin-bottom: 16px; opacity: 0.5; }

/* ============= 列表样式 ============= */
.feature-list { margin: 32px 0; }
.feature-list li {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-soft);
}
.feature-list li:first-child { border-top: 1px solid var(--line-soft); }
.feature-list .num {
  font-size: 13px;
  color: #fff;
  font-weight: 600;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-light) 100%);
  box-shadow: 0 6px 20px rgba(0, 88, 255, 0.22);
  flex-shrink: 0;
  font-family: var(--font-num);
}
.feature-list h4 { font-size: 17px; font-weight: 600; margin-bottom: 4px; letter-spacing: -0.01em; }
.feature-list p { font-size: 14px; color: var(--text-2); line-height: 1.6; }

/* ============= 表单 ============= */
.form-wrap { max-width: 640px; margin: 0 auto; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.form-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.005em;
}
.form-group input, .form-group select, .form-group textarea {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  font-size: 15px;
  background: white;
  transition: border 0.2s;
  outline: none;
  font-family: inherit;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--brand);
}
.form-group textarea { min-height: 120px; resize: vertical; }

/* ============= 团队卡片 ============= */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.team-card { text-align: left; }
.team-photo {
  aspect-ratio: 3/4;
  background: var(--bg-soft);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
  font-size: 60px;
  overflow: hidden;
}
.team-card h4 { font-size: 17px; font-weight: 600; margin-bottom: 4px; letter-spacing: -0.01em; }
.team-card .role { font-size: 13px; color: var(--text-2); margin-bottom: 8px; }
.team-card .bio { font-size: 13px; color: var(--text-3); line-height: 1.55; }

/* ============= 资源对接 ============= */
.resource-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.resource-card {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  padding: 40px 32px;
  transition: all 0.3s;
  background: white;
}
.resource-card:hover { border-color: var(--brand); transform: translateY(-2px); }
.resource-card .ic {
  width: 48px; height: 48px;
  background: var(--bg-soft);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--text);
}
.resource-card h3 { font-size: 22px; font-weight: 600; margin-bottom: 8px; letter-spacing: -0.015em; }
.resource-card .label { font-size: 12px; color: var(--text-3); letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 16px; }
.resource-card p { font-size: 15px; color: var(--text-2); line-height: 1.65; margin-bottom: 16px; }
.resource-card ul { display: flex; flex-direction: column; gap: 8px; }
.resource-card li { font-size: 14px; color: var(--text-2); padding-left: 16px; position: relative; }
.resource-card li::before {
  content: "";
  position: absolute; left: 0; top: 10px;
  width: 6px; height: 1px; background: var(--text-3);
}

/* ============= 联系卡片 ============= */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.contact-card {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  padding: 40px 32px;
  text-align: left;
  background: white;
  transition: all 0.3s;
}
.contact-card:hover { border-color: var(--brand); }
.contact-card .ic {
  width: 48px; height: 48px;
  background: var(--bg-soft);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  color: var(--text);
}
.contact-card h3 { font-size: 22px; font-weight: 600; margin-bottom: 8px; letter-spacing: -0.015em; }
.contact-card .label { font-size: 12px; color: var(--text-3); letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 16px; }
.contact-card p { font-size: 14px; color: var(--text-2); line-height: 1.65; margin-bottom: 16px; }
.contact-card .meta { font-size: 13px; color: var(--text); font-weight: 500; margin-bottom: 4px; }
.contact-card .meta-label { font-size: 11px; color: var(--text-3); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 12px; }

/* ============= 课程矩阵 ============= */
.course-matrix {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}
.course-cell {
  background: var(--bg);
  padding: 48px 40px;
  position: relative;
}
.course-cell.dark { background: var(--bg-dark); color: white; }
.course-cell .axis-y { position: absolute; top: 24px; left: 24px; font-size: 11px; color: var(--text-3); letter-spacing: 0.18em; text-transform: uppercase; }
.course-cell .axis-x { position: absolute; top: 24px; right: 24px; font-size: 11px; color: var(--text-3); letter-spacing: 0.18em; text-transform: uppercase; }
.course-cell.dark .axis-y, .course-cell.dark .axis-x { color: rgba(255,255,255,0.65); }
.course-cell h3 { font-size: 24px; font-weight: 600; margin-bottom: 16px; letter-spacing: -0.015em; margin-top: 24px; }
.course-cell ul { display: flex; flex-direction: column; gap: 8px; }
.course-cell li { font-size: 14px; color: var(--text-2); line-height: 1.6; padding-left: 14px; position: relative; }
.course-cell li::before { content: "—"; position: absolute; left: 0; color: var(--text-3); }
.course-cell.dark li { color: rgba(255,255,255,0.65); }
.course-cell.dark li::before { color: rgba(255,255,255,0.75); }

/* ============= 活动卡片 ============= */
.activity-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.activity-card {
  background: white;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.3s;
}
.activity-card:hover { border-color: var(--brand); transform: translateY(-2px); }
.activity-img {
  aspect-ratio: 16/10;
  background: var(--bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
  font-size: 13px;
  letter-spacing: 0.1em;
}
.activity-content { padding: 24px; }
.activity-date {
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.activity-card h4 { font-size: 17px; font-weight: 600; margin-bottom: 8px; letter-spacing: -0.01em; line-height: 1.3; }
.activity-card p { font-size: 13px; color: var(--text-2); line-height: 1.6; }

/* ============= 滚动动画 ============= */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.8s, transform 0.8s; }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal-2 { transition-delay: 0.1s; }
.reveal-3 { transition-delay: 0.2s; }
.reveal-4 { transition-delay: 0.3s; }

/* ============= 响应式 ============= */
@media (max-width: 1024px) {
  :root { --section-py: 100px; }
  .nav { gap: 24px; margin-left: 24px; }
  .mega-grid { grid-template-columns: 200px repeat(2, 1fr); gap: 32px; }
  .pillars { grid-template-columns: 1fr; }
  .pillar { border-right: none; border-bottom: 1px solid var(--line-soft); }
  .pillar:last-child { border-bottom: none; }
  .matrix { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: none; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--line-soft); }
  .advantages { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .activity-grid { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; gap: 40px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 40px; }
  .global-list { grid-template-columns: repeat(2, 1fr); }
  .practical-grid { grid-template-columns: 1fr; }
  .case-card { flex: 0 0 calc((100% - 24px) / 2); }
  .course-matrix { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  :root { --header-h: 56px; --section-py: 72px; }
  .logo img { height: 46px; max-width: 240px; }
  .nav, .header-actions .btn { display: none; }
  .header-actions .icon-btn { display: none; }
  .mobile-menu-btn {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
  }
  .mobile-menu-btn span { display: block; width: 22px; height: 1.5px; background: var(--brand); }
  .hero { padding-top: calc(var(--header-h) + 32px); padding-bottom: 52px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-visual { aspect-ratio: 16 / 10.4; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn-primary, .hero-actions .btn-secondary { width: 100%; justify-content: center; }
  .hero-services { grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 40px; }
  .hero-service { padding: 14px 16px; }
  .hero-service .ic { width: 36px; height: 36px; }
  .hero-service .t strong { font-size: 13px; }
  .hero-service .t small { font-size: 11px; }
  .stats { grid-template-columns: 1fr; }
  .stat { border-right: none; border-bottom: 1px solid var(--line-soft); }
  .stat:last-child { border-bottom: none; }
  .advantages { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .activity-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .case-card { flex: 0 0 88%; min-width: 0; }
  .resource-grid { grid-template-columns: 1fr; }
  .pillar { padding: 40px 24px; }
  .pillar-num { margin-bottom: 32px; }
  .matrix-item { padding: 40px 28px; min-height: 240px; }
  .matrix-num { font-size: 48px; }
  .stat-n { font-size: 64px; }
  .stat { padding: 40px 24px; }
  .page-header { padding-top: calc(var(--header-h) + 60px); padding-bottom: 60px; }
  .ai-launcher { width: 52px; height: 52px; bottom: 16px; right: 16px; }
  .ai-window { bottom: 80px; right: 12px; left: 12px; width: auto; }
}

/* ===========================================
   内页补充组件 V4
   =========================================== */

/* 锚点滚动避让固定导航 */
[id] { scroll-margin-top: calc(var(--header-h) + 20px); }

/* 内页二级分类导航条（吸顶） */
.subnav {
  position: sticky;
  top: var(--header-h);
  z-index: 90;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line-soft);
}
.subnav .container {
  display: flex;
  gap: 40px;
  overflow-x: auto;
  scrollbar-width: none;
}
.subnav .container::-webkit-scrollbar { display: none; }
.subnav a {
  padding: 18px 2px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  letter-spacing: 0.01em;
}
.subnav a:hover { color: var(--text); }
.subnav a.active { color: var(--brand); border-bottom-color: var(--brand); }

/* CTA 品牌蓝横条 */
.cta-band {
  background: linear-gradient(120deg, #0058ff 0%, #0047d6 50%, #0033a8 100%);
  color: white;
  padding: 110px 0;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 1000px; height: 1000px;
  background: radial-gradient(circle, rgba(0, 80, 255, 0.1) 0%, transparent 65%);
  pointer-events: none;
}
.cta-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 56px;
  position: relative;
  z-index: 1;
}
.cta-eyebrow {
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.65);
  font-weight: 500;
  margin-bottom: 16px;
  display: block;
}
.cta-title {
  font-size: clamp(32px, 4vw, 54px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.12;
  max-width: 760px;
  color: white;
}
.cta-title em { font-style: italic; font-weight: 500; color: rgba(255,255,255,0.65); }
.cta-sub {
  font-size: 17px;
  color: rgba(255,255,255,0.65);
  line-height: 1.6;
  margin-top: 18px;
  max-width: 560px;
}
.cta-inner .btn {
  flex-shrink: 0;
  background: white;
  color: var(--text);
  border: none;
  font-size: 15px;
  padding: 14px 30px;
}
.cta-inner .btn:hover { background: var(--brand); color: white; }

/* 内页案例网格（区别于首页横滑轮播） */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.cases-grid .case-card {
  flex: none;
  min-width: 0;
}

/* 合作生态网格 */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}
.partner-item {
  background: white;
  padding: 40px 20px;
  min-height: 96px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-2);
  text-align: center;
  letter-spacing: -0.005em;
  transition: background 0.3s, color 0.3s;
}
.partner-item:hover { background: var(--bg-soft); color: var(--text); }

/* 联系分栏（左渠道 / 右表单） */
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: start;
}
.split-intro h3 {
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 12px;
}
.split-intro > p {
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 24px;
}
.channel {
  display: flex;
  gap: 18px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line-soft);
}
.channel:first-of-type { border-top: 1px solid var(--line-soft); }
.channel .ic {
  width: 48px; height: 48px;
  background: var(--bg-soft);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  flex-shrink: 0;
}
.channel h4 { font-size: 16px; font-weight: 600; margin-bottom: 3px; letter-spacing: -0.01em; }
.channel p { font-size: 14px; color: var(--text-2); line-height: 1.6; }
.channel .cn { display: block; font-size: 12px; color: var(--text-3); letter-spacing: 0.06em; margin-bottom: 2px; text-transform: uppercase; }

/* 表单卡片 */
.form-card {
  background: var(--bg-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  padding: 44px 40px;
}
.form-card h3 {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-bottom: 28px;
}
.form-card .btn { width: 100%; justify-content: center; }
.form-submit {
  background: var(--brand);
  color: white;
  width: 100%;
  padding: 14px 28px;
  border-radius: 980px;
  font-size: 15px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background 0.2s;
  cursor: pointer;
  margin-top: 4px;
}
.form-submit:hover { background: var(--brand); }

/* 图文大图内的浅色标签 */
.visual-tag {
  position: absolute;
  top: 20px; left: 20px;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-3);
  background: rgba(255, 255, 255, 0.7);
  padding: 6px 12px;
  border-radius: 4px;
  border: 1px solid var(--line-soft);
}

/* 两列活动网格（偶数张卡片时更舒展） */
.activity-grid.two { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 768px) {
  .activity-grid.two { grid-template-columns: 1fr; }
}

@media (max-width: 1024px) {
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
  .split-grid { grid-template-columns: 1fr; gap: 48px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 768px) {
  .cases-grid { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-item { font-size: 14px; padding: 24px 12px; min-height: 72px; }
  .subnav { top: var(--header-h); }
  .subnav .container { gap: 24px; }
  .form-card { padding: 32px 24px; }
  .cta-band { padding: 72px 0; }
}

/* 浅灰分区内的表单卡提亮为纯白，保证层次 */
.section-soft .form-card { background: #fff; }

/* ===========================================
   联系我们页 · 深色底信息卡（#info）
   =========================================== */
.info-cta {
  max-width: 1020px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}
.info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.12);
  margin-top: 56px;
}
.info-item {
  background: rgba(255, 255, 255, 0.05);
  padding: 36px 20px;
  min-height: 152px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: background 0.3s;
}
.info-item:hover { background: rgba(255, 255, 255, 0.09); }
.info-item .l {
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  font-weight: 500;
}
.info-item .v {
  font-size: 17px;
  font-weight: 600;
  color: white;
  letter-spacing: -0.01em;
  line-height: 1.5;
}
.info-note { margin-top: 28px; color: rgba(255,255,255,0.6); font-size: 13px; letter-spacing: 0.02em; }
@media (max-width: 1024px) {
  .info-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .info-grid { grid-template-columns: 1fr; }
  .info-item { min-height: 112px; padding: 26px 16px; }
}

/* ===========================================
   V6 · 纯蓝单色渐变体系 + 极简科技网格背景
   单一色相（蓝），仅以深浅/透明度造层次
   =========================================== */

/* ---------- 1. 首屏：科技网格 + 多层蓝色光斑 ---------- */
.hero {
  background:
    radial-gradient(1100px 620px at 84% -14%, rgba(0, 88, 255, 0.17), transparent 62%),
    radial-gradient(760px 520px at 104% 44%, rgba(0, 180, 255, 0.13), transparent 58%),
    radial-gradient(880px 560px at -12% 32%, rgba(0, 88, 255, 0.10), transparent 58%),
    radial-gradient(900px 640px at 46% 120%, rgba(11, 63, 168, 0.07), transparent 62%),
    linear-gradient(180deg, #f1f7ff 0%, #ffffff 58%, #fbfdff 100%);
}
.hero-sky {
  background:
    radial-gradient(circle at 84% 10%, rgba(255,255,255,0.96) 0%, rgba(224,241,255,0.55) 20%, transparent 44%),
    radial-gradient(circle at 97% 33%, rgba(0,180,255,0.11) 0%, transparent 30%),
    linear-gradient(118deg, transparent 40%, rgba(0, 88, 255, 0.065) 47%, transparent 55%),
    linear-gradient(118deg, transparent 68%, rgba(0, 180, 255, 0.065) 75%, transparent 83%);
}
/* 细线科技网格（渐隐） */
.hero-sky::before {
  background-image:
    linear-gradient(rgba(0, 88, 255, 0.075) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 88, 255, 0.075) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: -1px -1px;
  opacity: 1;
  mask-image: radial-gradient(ellipse 118% 92% at 60% 6%, #000 6%, transparent 76%);
  -webkit-mask-image: radial-gradient(ellipse 118% 92% at 60% 6%, #000 6%, transparent 76%);
}
/* 左下角点阵，增加纵深 */
.hero-sky::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(circle at center, rgba(0, 88, 255, 0.20) 1px, transparent 1.5px);
  background-size: 24px 24px;
  opacity: 0.4;
  mask-image: radial-gradient(ellipse 46% 42% at 4% 96%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 46% 42% at 4% 96%, #000 0%, transparent 78%);
}

/* ---------- 2. 纯白分区：网格 + 双向光斑 ---------- */
.section-white {
  background:
    radial-gradient(900px 620px at 94% -8%, rgba(0, 88, 255, 0.06), transparent 62%),
    radial-gradient(800px 560px at 0% 106%, rgba(0, 180, 255, 0.055), transparent 60%),
    #ffffff;
  position: relative;
  overflow: hidden;
}
.section-white::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 88, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 88, 255, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: -1px -1px;
  mask-image: radial-gradient(ellipse 72% 62% at 50% 0%, #000 0%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 72% 62% at 50% 0%, #000 0%, transparent 80%);
}
.section-white > .container { position: relative; z-index: 1; }

/* 无背景类的普通 section（默认纯白）同样加光斑与网格 */
.section:not(.section-soft):not(.section-dark):not(.section-white):not(.global):not(.practical) {
  background:
    radial-gradient(1000px 600px at 90% -6%, rgba(0, 88, 255, 0.055), transparent 64%),
    radial-gradient(820px 560px at 2% 104%, rgba(0, 180, 255, 0.05), transparent 62%),
    #ffffff;
  overflow: hidden;
}
.section:not(.section-soft):not(.section-dark):not(.section-white):not(.global):not(.practical)::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 88, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 88, 255, 0.045) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: -1px -1px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 0%, #000 0%, transparent 82%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 0%, #000 0%, transparent 82%);
}
.section:not(.section-soft):not(.section-dark):not(.section-white):not(.global):not(.practical) > .container {
  position: relative;
  z-index: 1;
}

/* ---------- 3. 浅蓝分区：加强光斑 ---------- */
.section-soft {
  background:
    radial-gradient(1100px 620px at 106% 0%, rgba(0, 88, 255, 0.12), transparent 58%),
    radial-gradient(820px 520px at -8% 96%, rgba(0, 180, 255, 0.09), transparent 58%),
    linear-gradient(180deg, #f4f8ff 0%, #ecf3fe 100%);
}

/* ---------- 4. 数据区：光感 + 网格 ---------- */
.stats {
  background:
    radial-gradient(900px 420px at 50% -10%, rgba(0, 88, 255, 0.07), transparent 68%),
    radial-gradient(600px 400px at 4% 108%, rgba(0, 180, 255, 0.06), transparent 62%),
    #ffffff;
}
.stat {
  background:
    radial-gradient(260px 260px at 108% -6%, rgba(0, 88, 255, 0.07), transparent 62%);
}
.stat:hover {
  background:
    radial-gradient(300px 300px at 108% -6%, rgba(0, 88, 255, 0.13), transparent 64%);
  transition: background 0.35s;
}

/* ---------- 5. 强调文字统一走蓝色渐变 ---------- */
.pillar-num {
  background: linear-gradient(120deg, var(--blue-700) 0%, var(--blue-400) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.section-eyebrow {
  color: var(--brand);
  font-weight: 600;
}
.section-dark .section-eyebrow { color: rgba(255, 255, 255, 0.72); }
.section-title em {
  background: linear-gradient(120deg, var(--blue-700) 0%, var(--brand) 46%, var(--blue-400) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-title .accent {
  background: linear-gradient(120deg, var(--blue-800) 0%, var(--brand) 44%, var(--blue-400) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.matrix-num {
  background: linear-gradient(135deg, var(--blue-800) 0%, var(--brand) 48%, var(--blue-400) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.matrix-item li::before { background: var(--blue-400); }
.matrix-item h3 .en { color: var(--blue-500); }

/* ---------- 6. 图标统一为蓝色渐变填充 ---------- */
.icon-fill.sm,
.icon-fill.lg,
.icon-fill.circle {
  background: linear-gradient(135deg, var(--blue-800) 0%, var(--brand) 52%, var(--blue-400) 100%);
  color: #fff;
}
.advantage .icon-fill,
.resource-card .icon-fill,
.case-card .icon-fill {
  box-shadow: 0 10px 26px rgba(0, 88, 255, 0.26);
}

/* ---------- 7. 深色分区：蓝色渐变 + 白色光晕 ---------- */
.section-dark {
  background:
    radial-gradient(760px 520px at 92% 4%, rgba(255, 255, 255, 0.14), transparent 62%),
    radial-gradient(620px 460px at 4% 100%, rgba(0, 180, 255, 0.18), transparent 62%),
    linear-gradient(135deg, #0b3fa8 0%, #0058ff 52%, #082a63 100%);
}

/* ---------- 8. 移动端：AI 客服改为底部抽屉，不遮挡正文 ---------- */
@media (max-width: 768px) {
  .ai-window {
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-width: 100%;
    height: 76vh;
    max-height: 76vh;
    border-radius: 20px 20px 0 0;
  }
  .ai-launcher {
    width: 54px;
    height: 54px;
    bottom: 20px;
    right: 18px;
  }
  .ai-body { padding: 16px; }
}

/* ---------- 9. 移动端：网格与光斑适度减弱，避免噪声 ---------- */
@media (max-width: 768px) {
  .hero-sky::before { background-size: 48px 48px; opacity: 0.9; }
  .hero-sky::after { opacity: 0.28; }
  .section-white::before,
  .section:not(.section-soft):not(.section-dark):not(.section-white):not(.global):not(.practical)::before {
    background-size: 48px 48px;
  }
}


/* ===========================================
   V8 · 首屏动态场景（实拍素材 + 实时渲染地球）
   · canvas 旋转地球（等距圆柱贴图实时投影）
   · 实拍飞机沿航线巡航 / 实拍货轮随浪起伏
   · 实拍海面双层视差 + 实拍日照光晕
   全部动画仅用 transform / opacity，保证 60fps
   =========================================== */

.hero-visual .scene {
  width: 100%;
  height: 100%;
  display: block;
  position: relative;
  z-index: 1;
}
/* canvas 地球层：位于 SVG 之下、天空背景之上 */
.scene-earth {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ---------- 3. 城市节点脉冲 ---------- */
.sc-ping {
  transform-box: fill-box;
  transform-origin: center;
  animation: sc-ping 3s ease-out infinite;
  animation-delay: var(--d, 0s);
}
@keyframes sc-ping {
  0%   { transform: scale(0.5); opacity: 0.9; }
  70%  { transform: scale(4.2); opacity: 0; }
  100% { transform: scale(4.2); opacity: 0; }
}
/* 城市名呼吸式点亮 */
.sc-city text {
  animation: sc-cityGlow 7s ease-in-out infinite;
  animation-delay: var(--d, 0s);
}
@keyframes sc-cityGlow {
  0%, 100% { opacity: 0.5; }
  50%      { opacity: 1; }
}
.sc-city-hq text { animation-duration: 5s; }

/* ---------- 4. 航线流光 ---------- */
.sc-route {
  stroke-dasharray: 7 11;
  animation: sc-dash 2.6s linear infinite;
}
@keyframes sc-dash { to { stroke-dashoffset: -36; } }

/* ---------- 5. 日照光斑呼吸 ---------- */
.sc-sunGrp {
  transform-box: fill-box;
  transform-origin: center;
  animation: sc-breathe 9s ease-in-out infinite;
}
@keyframes sc-breathe {
  0%, 100% { transform: scale(1);     opacity: 1; }
  50%      { transform: scale(1.07);  opacity: 0.9; }
}

/* ---------- 6. 云层漂移 ---------- */
.sc-c1 { animation: sc-cloudA 64s ease-in-out infinite; }
.sc-c2 { animation: sc-cloudB 84s ease-in-out infinite; }
.sc-c3 { animation: sc-cloudC 52s ease-in-out infinite; }
@keyframes sc-cloudA { 0%,100% { transform: translate(-26px,0); }  50% { transform: translate(26px,-4px); } }
@keyframes sc-cloudB { 0%,100% { transform: translate(22px,0); }   50% { transform: translate(-24px,3px); } }
@keyframes sc-cloudC { 0%,100% { transform: translate(-16px,2px); } 50% { transform: translate(18px,-3px); } }

/* ---------- 7. 实拍海面：单层无缝平铺，向右缓流（船头朝左 → 顺航向） ---------- */
.sc-sea {
  animation: sc-seaFlow 372s linear infinite;   /* 2234px / 372s ≈ 6px/s 缓流 */
}
@keyframes sc-seaFlow {
  from { transform: translateX(-2234px); }
  to   { transform: translateX(0); }
}

/* ---------- 8. 货轮：往返航行 + 随浪起伏 ---------- */
.sc-ship {
  transform-box: fill-box;
  transform-origin: center bottom;
  animation: sc-sail 22s ease-in-out infinite;
}
@keyframes sc-sail {
  0%   { transform: translate(-18px, 0)   rotate(-0.6deg); }
  50%  { transform: translate(18px, -5px) rotate(0.6deg); }
  100% { transform: translate(-18px, 0)   rotate(-0.6deg); }
}

/* ---------- 9. 品牌涂装飞机沿航线巡航 ---------- */
.sc-plane {
  offset-path: path("M -80,320 C 40,250 150,168 300,150 C 400,138 470,108 560,74 C 630,48 700,28 796,8");
  offset-rotate: auto;
  animation: sc-fly 26s linear infinite;
}
@keyframes sc-fly { from { offset-distance: 0%; } to { offset-distance: 100%; } }

.sc-flightTrail {
  fill: none;
  stroke: rgba(255, 255, 255, 0.62);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 9 17;
  animation: sc-dash 2s linear infinite;
}

/* ---------- 10. 航线光点：货物/数据沿航线流动 ---------- */
.sc-flow {
  filter: drop-shadow(0 0 4px rgba(0, 200, 255, 0.95));
  animation-name: sc-flowRun;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}
.sc-flow-1 { offset-path: path("M-20,20 Q-60,-14 -88,-48"); animation-duration: 4.4s; animation-delay: 0s; }
.sc-flow-2 { offset-path: path("M-20,20 Q20,-24 56,-52");   animation-duration: 3.8s; animation-delay: -1.2s; }
.sc-flow-3 { offset-path: path("M-20,20 Q-62,16 -90,14");   animation-duration: 4.1s; animation-delay: -2.4s; }
.sc-flow-4 { offset-path: path("M-20,20 Q28,66 50,94");     animation-duration: 3.5s; animation-delay: -0.7s; }
@keyframes sc-flowRun { from { offset-distance: 0%; } to { offset-distance: 100%; } }

/* 飞机加轻微投影，从浅色天空里跳出来 */
.sc-plane { filter: drop-shadow(0 4px 7px rgba(0, 58, 160, 0.28)); }

/* ---------- 12. 第四朵云 ---------- */
.sc-c4 { animation: sc-cloudD 72s ease-in-out infinite; }
@keyframes sc-cloudD { 0%,100% { transform: translate(16px,2px); } 50% { transform: translate(-18px,-3px); } }

/* ---------- 14. 城市标签：加描边，地球提亮后依然清晰 ---------- */
.sc-cities text {
  paint-order: stroke fill;
  stroke: rgba(3, 24, 66, 0.62);
  stroke-width: 2.6px;
  stroke-linejoin: round;
  fill: #ffffff;
}

/* 天际线剪影在窄屏收敛，避免与货轮打架 */
.sc-skyline { }

@media (prefers-reduced-motion: reduce) {
  .sc-c4 { animation: none !important; }
}

/* ===========================================
   V7 · 移动端适配
   =========================================== */
@media (max-width: 768px) {
  /* 窄屏缩放后小字不可读：只保留总部标签并放大 */
  .sc-city:not(.sc-city-hq) text { display: none; }
  .sc-city:not(.sc-city-hq) .sc-ping { display: none; }
  .sc-city-hq text { font-size: 17px; font-weight: 800; }
  .sc-city-hq > circle:nth-of-type(2) { r: 6; }
  /* 云与航线在窄屏下略作收敛，避免拥挤 */
  .sc-c3 { display: none; }
  .sc-route { stroke-width: 1.4; }
}

/* ===========================================
   V7 · 尊重系统「减弱动态效果」设置
   动画停止时保留一个可见的静止画面
   =========================================== */
@media (prefers-reduced-motion: reduce) {
  .hero-visual .scene * { animation: none !important; }
  .sc-plane { offset-distance: 46%; }
  .sc-ship { transform: none; }
}