@charset "UTF-8";
/* ==========================================================================
   北京卫翼科技有限公司 — 官网样式
   设计依据：《北京卫翼科技有限公司 设计规范》
   风格：深邃科技蓝 + 冰青渐变光效的机构级专业感
   ========================================================================== */

/* --------------------------------------------------------------------------
   0. 设计令牌（Design Tokens）
   -------------------------------------------------------------------------- */
:root {
  /* 色彩系统 */
  --c-bg-dark: #0B1426;          /* 主背景色：Hero / 深色区块 / Footer */
  --c-bg-light: #F0F4F8;         /* 次背景色：浅色内容区块 / 交替底色 */
  --c-primary: #1A56DB;          /* 主色调：导航高亮 / 标题强调 / 图标 / 链接 */
  --c-primary-strong: #143F9E;   /* 主色深阶 */
  --c-accent-start: #0EA5E9;     /* 强调色渐变起点 */
  --c-accent-end: #10B981;       /* 强调色渐变终点 */
  --c-accent: #0EA5E9;           /* 强调色单色引用 */
  --c-aux: #1E3A5F;              /* 辅助色：卡片背景 / 次级深色区块 / 边框装饰 */
  --c-trust: #10B981;            /* 信任色：服务保障 / 成功状态 */

  /* 文字色 */
  --t-on-dark: #E8EDF5;
  --t-on-light: #1A2332;
  --t-muted-on-dark: #8B9BB8;
  --t-muted-on-light: #5A6B7F;

  /* 背景与描边 */
  --c-surface: #FFFFFF;
  --c-white: #FFFFFF;
  --c-border-light: #DCE4EE;
  --c-border-dark: rgba(232, 237, 245, 0.14);

  /* 渐变 */
  --g-accent: linear-gradient(90deg, var(--c-accent-start) 0%, var(--c-accent-end) 100%);
  --g-accent-soft: linear-gradient(135deg, rgba(14, 165, 233, 0.16) 0%, rgba(16, 185, 129, 0.16) 100%);
  --g-hero: linear-gradient(135deg, #0B1426 0%, #12233F 45%, #1E3A5F 100%);
  --g-dark-block: linear-gradient(160deg, #0B1426 0%, #16294A 100%);

  /* 阴影 */
  --sh-1: 0 4px 12px rgba(0, 0, 0, 0.1);
  --sh-2: 0 12px 32px rgba(26, 86, 219, 0.15);
  --sh-3: 0 18px 44px rgba(11, 20, 38, 0.28);

  /* 圆角 */
  --r-sm: 6px;
  --r: 8px;
  --r-lg: 16px;
  --r-pill: 999px;

  /* 动效 */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --d-fast: 200ms;
  --d-base: 300ms;
  --d-slow: 400ms;
  --d-enter: 500ms;

  /* 布局 */
  --container: 1200px;
  --gutter: 24px;
  --section-y: 100px;
  --header-h: 76px;
}

/* --------------------------------------------------------------------------
   1. 基础重置与排版
   -------------------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}

body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC",
    "Source Han Sans SC", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--t-on-light);
  background: var(--c-surface);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5 {
  margin: 0;
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.02em; /* tracking-tight 传递力量感 */
  color: var(--t-on-light);
}

h1 { font-size: 48px; font-weight: 800; }
h2 { font-size: 36px; font-weight: 700; }
h3 { font-size: 24px; font-weight: 700; }
h4 { font-size: 18px; font-weight: 700; letter-spacing: 0; }
h5 { font-size: 16px; font-weight: 700; letter-spacing: 0; }

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg { max-width: 100%; display: block; }
a { color: var(--c-primary); text-decoration: none; transition: color var(--d-fast) var(--ease); }
a:hover { color: var(--c-accent); }
button, input, textarea, select { font: inherit; color: inherit; }
strong, b { font-weight: 700; }

:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 200;
  padding: 10px 18px; border-radius: var(--r);
  background: var(--c-primary); color: #fff;
  transition: top var(--d-fast) var(--ease);
}
.skip-link:focus { top: 12px; color: #fff; }

/* 布局工具 */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section { padding: var(--section-y) 0; position: relative; }
.section--light { background: var(--c-bg-light); }
.section--white { background: var(--c-surface); }
.section--dark { background: var(--c-bg-dark); color: var(--t-on-dark); }
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4 { color: var(--t-on-dark); }
.section--tight { padding: 72px 0; }

/* 区块标题 */
.section-head { max-width: 760px; margin: 0 auto 56px; text-align: center; }
.section-head h2 { margin-bottom: 16px; }
.section-head p { font-size: 17px; color: var(--t-muted-on-light); }
.section-head--left { margin-left: 0; text-align: left; }

.section-head .eyebrow,
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 700; letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-primary);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: ""; width: 28px; height: 2px; border-radius: 2px;
  background: var(--g-accent);
}
.section--dark .eyebrow { color: #7FD4F5; }

/* 渐变文字 */
.grad-text {
  background: var(--g-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.section--light-title,
.title-underline { position: relative; }

/* --------------------------------------------------------------------------
   2. 按钮
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 52px;
  padding: 0 30px;
  border: 1px solid transparent;
  border-radius: var(--r);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
  transition: transform var(--d-fast) ease-out, box-shadow var(--d-base) var(--ease),
    background-color var(--d-base) var(--ease), border-color var(--d-base) var(--ease),
    color var(--d-base) var(--ease), filter var(--d-fast) ease-out;
}
.btn:hover { color: inherit; }

/* 实心渐变（转化色） */
.btn--primary {
  background: var(--g-accent);
  color: #fff;
  box-shadow: 0 8px 22px rgba(14, 165, 233, 0.28);
}
.btn--primary:hover {
  color: #fff;
  filter: brightness(1.1);
  transform: scale(1.02);
  box-shadow: 0 10px 30px rgba(16, 185, 129, 0.34);
}

/* 描边（深色底） */
.btn--outline {
  background: transparent;
  color: var(--t-on-dark);
  border-color: rgba(232, 237, 245, 0.42);
}
.btn--outline:hover {
  color: #fff;
  border-color: var(--c-accent);
  background: rgba(14, 165, 233, 0.12);
}

/* 描边（浅色底） */
.btn--outline-dark {
  background: transparent;
  color: var(--c-primary);
  border-color: rgba(26, 86, 219, 0.42);
}
.btn--outline-dark:hover {
  color: var(--c-primary-strong);
  border-color: var(--c-primary);
  background: rgba(26, 86, 219, 0.07);
}

.btn--sm { min-height: 44px; padding: 0 22px; font-size: 15px; }
.btn--block { width: 100%; }
.btn--ghost {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--c-border-dark);
  color: var(--t-on-dark);
}
.btn--ghost:hover { color: #fff; border-color: var(--c-accent); }

.btn-row { display: flex; flex-wrap: wrap; gap: 16px; }
.btn-row--center { justify-content: center; }

/* --------------------------------------------------------------------------
   3. Header / 导航（深色半透明 + 毛玻璃）
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(11, 20, 38, 0.72);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid rgba(232, 237, 245, 0.08);
  transition: background var(--d-base) var(--ease), box-shadow var(--d-base) var(--ease),
    border-color var(--d-base) var(--ease);
}
.site-header.is-stuck {
  background: rgba(9, 17, 32, 0.94);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-h);
}

/* Logo */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  flex-shrink: 0;
}
.logo:hover { color: #fff; }
.logo__mark {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: var(--g-accent);
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0;
  box-shadow: 0 6px 18px rgba(14, 165, 233, 0.35);
}
.logo__text { display: flex; flex-direction: column; line-height: 1.2; }
.logo__name { font-size: 18px; font-weight: 800; letter-spacing: -0.01em; }
.logo__sub {
  font-size: 11px; font-weight: 500; letter-spacing: 0.14em;
  color: var(--t-muted-on-dark); text-transform: uppercase;
}

/* 主导航 */
.nav { display: flex; align-items: center; gap: 4px; }
.nav__link {
  position: relative;
  display: block;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--t-on-dark);
  border-radius: var(--r-sm);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 16px; right: 16px; bottom: 4px;
  height: 2px;
  background: var(--c-primary);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 250ms ease-out;
}
.nav__link:hover { color: #fff; }
.nav__link:hover::after,
.nav__link.is-active::after { transform: scaleX(1); }
.nav__link.is-active { color: #fff; font-weight: 600; }
.site-header.is-stuck .nav__link::after { background: var(--g-accent); }

.header-actions { display: flex; align-items: center; gap: 14px; }

/* 汉堡菜单 */
.nav-toggle {
  display: none;
  width: 46px; height: 46px;
  padding: 0;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--c-border-dark);
  border-radius: var(--r);
  cursor: pointer;
  position: relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  position: absolute;
  left: 50%; top: 50%;
  width: 20px; height: 2px;
  margin-left: -10px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--d-base) var(--ease), opacity var(--d-fast) var(--ease);
}
.nav-toggle span { margin-top: -1px; }
.nav-toggle span::before { content: ""; left: 0; top: -6px; margin: 0; }
.nav-toggle span::after { content: ""; left: 0; top: 6px; margin: 0; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { transform: translateY(-6px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   4. Hero（渐变色背景 + 冰蓝光晕 + 几何线条）
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  isolation: isolate;
  min-height: 80vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 72px) 0 96px;
  background: var(--g-hero);
  color: var(--t-on-dark);
  overflow: hidden;
}
/* 右上 + 左下柔和光点 */
.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
}
.hero::before {
  width: 620px; height: 620px;
  right: -180px; top: -220px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.34) 0%, rgba(14, 165, 233, 0) 68%);
}
.hero::after {
  width: 560px; height: 560px;
  left: -200px; bottom: -240px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.24) 0%, rgba(16, 185, 129, 0) 70%);
}

/* 几何线条装饰 */
.hero__grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(232, 237, 245, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 237, 245, 0.055) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 92% 78% at 50% 40%, #000 35%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 92% 78% at 50% 40%, #000 35%, transparent 100%);
}
.hero__lines {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.7;
}
.hero__lines svg { width: 100%; height: 100%; }

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: 64px;
  width: 100%;
}
.hero__content { max-width: 640px; }
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px;
  margin-bottom: 26px;
  border: 1px solid rgba(14, 165, 233, 0.4);
  border-radius: var(--r-pill);
  background: rgba(14, 165, 233, 0.1);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #9BDCF7;
}
.hero__badge::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--g-accent);
  box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.18);
}
.hero h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 24px;
}
.hero h1 .hero__line2 { display: block; }
.hero__lead {
  font-size: 18px;
  line-height: 1.85;
  color: #A9BBD4;
  max-width: 560px;
  margin-bottom: 40px;
}
.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  margin-top: 44px;
  padding-top: 28px;
  border-top: 1px solid var(--c-border-dark);
}
.hero__meta-item { display: flex; align-items: baseline; gap: 8px; }
.hero__meta-num {
  font-size: 26px; font-weight: 800; letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}
.hero__meta-label { font-size: 14px; color: var(--t-muted-on-dark); }

/* Hero 右侧：CSS/SVG 科技装饰面板 */
.hero__visual { position: relative; }
.hero-panel {
  position: relative;
  padding: 26px;
  border: 1px solid rgba(232, 237, 245, 0.14);
  border-radius: var(--r-lg);
  background: linear-gradient(155deg, rgba(30, 58, 95, 0.62) 0%, rgba(11, 20, 38, 0.72) 100%);
  box-shadow: var(--sh-3);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.hero-panel__head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
}
.hero-panel__title { font-size: 15px; font-weight: 700; color: #fff; }
.hero-panel__tag {
  padding: 4px 10px; border-radius: var(--r-pill);
  background: rgba(16, 185, 129, 0.16);
  border: 1px solid rgba(16, 185, 129, 0.34);
  color: #6EE7B7; font-size: 12px; font-weight: 600;
}
.hero-panel__bars { display: grid; gap: 16px; }
.hero-bar__top {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: 13px; color: var(--t-muted-on-dark); margin-bottom: 8px;
}
.hero-bar__val { font-weight: 700; color: #E8EDF5; font-variant-numeric: tabular-nums; }
.hero-bar__track {
  height: 8px; border-radius: var(--r-pill);
  background: rgba(232, 237, 245, 0.1);
  overflow: hidden;
}
.hero-bar__fill {
  display: block; height: 100%;
  width: 0;
  border-radius: var(--r-pill);
  background: var(--g-accent);
  transition: width 1200ms var(--ease);
}
.is-revealed .hero-bar__fill { width: var(--val, 60%); }

.hero-panel__stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 12px; margin-top: 24px;
  padding-top: 20px; border-top: 1px solid var(--c-border-dark);
}
.hero-stat__num {
  font-size: 22px; font-weight: 800; letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}
.hero-stat__label { font-size: 12px; color: var(--t-muted-on-dark); }

.hero-panel__float {
  position: absolute;
  right: -18px; bottom: -20px;
  display: flex; align-items: center; gap: 10px;
  padding: 12px 18px;
  border-radius: var(--r);
  background: rgba(11, 20, 38, 0.92);
  border: 1px solid rgba(16, 185, 129, 0.32);
  box-shadow: var(--sh-3);
  font-size: 13px; font-weight: 600; color: var(--t-on-dark);
}
.hero-panel__float svg { flex-shrink: 0; }

/* 页面内页 Banner */
.page-hero {
  position: relative;
  isolation: isolate;
  padding: calc(var(--header-h) + 76px) 0 76px;
  background: var(--g-hero);
  color: var(--t-on-dark);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  width: 560px; height: 560px;
  right: -160px; top: -260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.3) 0%, rgba(14, 165, 233, 0) 68%);
  z-index: -1;
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(232, 237, 245, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 237, 245, 0.05) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 80% 90% at 20% 30%, #000 20%, transparent 90%);
  -webkit-mask-image: radial-gradient(ellipse 80% 90% at 20% 30%, #000 20%, transparent 90%);
}
.page-hero h1 { font-size: 42px; color: #fff; margin-bottom: 16px; }
.page-hero p { font-size: 18px; color: #A9BBD4; max-width: 720px; }

.breadcrumb {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  font-size: 14px; color: var(--t-muted-on-dark);
  margin-bottom: 22px;
}
.breadcrumb a { color: var(--t-muted-on-dark); }
.breadcrumb a:hover { color: var(--c-accent); }
.breadcrumb li { display: flex; align-items: center; gap: 8px; }
.breadcrumb li + li::before { content: "/"; opacity: 0.5; }
.breadcrumb [aria-current] { color: #fff; }

/* --------------------------------------------------------------------------
   5. 卡片通用
   -------------------------------------------------------------------------- */
.card {
  position: relative;
  background: var(--c-surface);
  border: 1px solid var(--c-border-light);
  border-radius: var(--r);
  box-shadow: var(--sh-1);
  transition: transform var(--d-base) ease-out, box-shadow var(--d-base) ease-out,
    border-color var(--d-base) var(--ease);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--sh-2);
  border-color: rgba(26, 86, 219, 0.24);
}
.card--dark {
  background: var(--c-aux);
  border-color: var(--c-border-dark);
  box-shadow: none;
}
.card--dark:hover { border-color: rgba(14, 165, 233, 0.4); }

.grid { display: grid; gap: 28px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* 图标容器 */
.icon-box {
  width: 56px; height: 56px;
  display: grid; place-items: center;
  border-radius: 14px;
  background: var(--g-accent-soft);
  color: var(--c-primary);
  margin-bottom: 22px;
  transition: background var(--d-base) var(--ease), color var(--d-base) var(--ease),
    transform var(--d-base) var(--ease);
}
.icon-box svg { width: 26px; height: 26px; }
.card:hover .icon-box,
.module:hover .icon-box { transform: scale(1.06); }
.icon-box--solid {
  background: var(--g-accent);
  color: #fff;
  box-shadow: 0 8px 20px rgba(14, 165, 233, 0.28);
}
.icon-box--dark {
  background: rgba(14, 165, 233, 0.14);
  color: #6FCBF0;
}
.icon-box--sm { width: 44px; height: 44px; border-radius: 12px; margin-bottom: 0; }
.icon-box--sm svg { width: 20px; height: 20px; }

/* --------------------------------------------------------------------------
   6. 首页 — 核心业务展示
   -------------------------------------------------------------------------- */
.biz-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.biz-card {
  display: flex;
  flex-direction: column;
  padding: 34px 28px 30px;
}
.biz-card h3 { font-size: 21px; margin-bottom: 12px; }
.biz-card p { font-size: 15px; line-height: 1.8; color: var(--t-muted-on-light); flex-grow: 1; }
.biz-card__list {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin: 18px 0 22px;
}
.biz-card__list li {
  padding: 3px 10px;
  border-radius: var(--r-sm);
  background: var(--c-bg-light);
  font-size: 12px;
  color: var(--t-muted-on-light);
}
.biz-card__more {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 15px; font-weight: 600; color: var(--c-primary);
}
.biz-card__more svg { transition: transform var(--d-base) var(--ease); }
.biz-card:hover .biz-card__more svg { transform: translateX(4px); }

/* --------------------------------------------------------------------------
   7. 首页 — 为什么选择我们
   -------------------------------------------------------------------------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; }
.adv-item {
  position: relative;
  padding: 8px 32px 8px 0;
}
.adv-item + .adv-item { padding-left: 32px; border-left: 1px solid var(--c-border-light); }
.adv-item__num {
  display: block;
  font-size: 44px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  margin-bottom: 20px;
}
.adv-item h3 { font-size: 20px; margin-bottom: 12px; }
.adv-item p { font-size: 15px; color: var(--t-muted-on-light); }

/* --------------------------------------------------------------------------
   8. 首页/关于 — 分栏图文
   -------------------------------------------------------------------------- */
.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: 72px;
}
.split--reverse .split__media { order: 2; }
.split__body h2 { margin-bottom: 22px; }
.split__body p { color: var(--t-muted-on-light); margin-bottom: 18px; }
.split__body .btn { margin-top: 14px; }

.split__points { display: grid; gap: 14px; margin: 26px 0 8px; }
.split__points li {
  position: relative; padding-left: 30px;
  font-size: 15px; color: var(--t-on-light);
}
.split__points li::before {
  content: "";
  position: absolute; left: 0; top: 9px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--g-accent-soft);
}
.split__points li::after {
  content: "";
  position: absolute; left: 5px; top: 14px;
  width: 6px; height: 3px;
  border-left: 2px solid var(--c-accent-end);
  border-bottom: 2px solid var(--c-accent-end);
  transform: rotate(-45deg);
}

/* 媒体框（图片 / 示意图） */
.media-frame {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(11, 20, 38, 0.22);
  border: 1px solid rgba(11, 20, 38, 0.08);
  background: var(--c-aux);
}
.media-frame img,
.media-frame svg { width: 100%; height: auto; }
.media-frame__badge {
  position: absolute;
  left: 22px; bottom: 22px;
  display: flex; align-items: center; gap: 12px;
  padding: 14px 20px;
  border-radius: var(--r);
  background: rgba(11, 20, 38, 0.9);
  border: 1px solid var(--c-border-dark);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: var(--t-on-dark);
}
.media-frame__badge strong { display: block; font-size: 17px; font-weight: 800; letter-spacing: -0.02em; }
.media-frame__badge span { font-size: 12.5px; color: var(--t-muted-on-dark); }

/* 数据小卡（分栏右侧叠加） */
.metric-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 34px; }
.metric {
  padding: 20px 18px;
  border-radius: var(--r);
  background: var(--c-bg-light);
  border: 1px solid var(--c-border-light);
}
.metric__num {
  font-size: 28px; font-weight: 800; letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums; line-height: 1.1;
}
.metric__label { margin-top: 6px; font-size: 13px; color: var(--t-muted-on-light); }

/* --------------------------------------------------------------------------
   9. 数据展示区（团队实力）
   -------------------------------------------------------------------------- */
.stats-band {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--g-dark-block);
  color: var(--t-on-dark);
  padding: 68px 0;
}
.stats-band::before {
  content: "";
  position: absolute; width: 520px; height: 520px;
  left: 50%; top: -300px; transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.22) 0%, rgba(14, 165, 233, 0) 70%);
  z-index: -1;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px; }
.stat { text-align: center; }
.stat__num {
  font-size: 46px;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.stat__label { margin-top: 10px; font-size: 15px; color: var(--t-muted-on-dark); }
.stat__note { margin-top: 4px; font-size: 12.5px; color: rgba(139, 155, 184, 0.72); }
.stats-grid--divided .stat + .stat { border-left: 1px solid var(--c-border-dark); }

/* --------------------------------------------------------------------------
   10. 首页 — 联系转化区（深色）
   -------------------------------------------------------------------------- */
.cta-section {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--c-bg-dark);
  color: var(--t-on-dark);
  padding: var(--section-y) 0;
}
.cta-section::before {
  content: "";
  position: absolute;
  width: 640px; height: 640px;
  right: -220px; bottom: -320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.18) 0%, rgba(16, 185, 129, 0) 70%);
  z-index: -1;
}
.cta-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 64px;
  align-items: start;
}
.cta-copy h2 { color: #fff; margin-bottom: 20px; }
.cta-copy > p { color: #A9BBD4; margin-bottom: 34px; }
.cta-contact-list { display: grid; gap: 18px; }
.cta-contact {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 18px 20px;
  border: 1px solid var(--c-border-dark);
  border-radius: var(--r);
  background: rgba(30, 58, 95, 0.42);
}
.cta-contact h4 { color: #fff; margin-bottom: 4px; }
.cta-contact p { font-size: 14.5px; color: var(--t-muted-on-dark); }
.cta-contact a { color: #7FD4F5; font-size: 14.5px; }

/* 表单 */
.form-card {
  padding: 38px;
  border-radius: var(--r-lg);
  background: #fff;
  box-shadow: 0 26px 60px rgba(0, 0, 0, 0.32);
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.form-card--dark {
  background: rgba(30, 58, 95, 0.5);
  border: 1px solid var(--c-border-dark);
  box-shadow: none;
}
.form-card h3 { margin-bottom: 8px; }
.form-card__hint { font-size: 14px; color: var(--t-muted-on-light); margin-bottom: 26px; }
.form-card--dark h3 { color: #fff; }
.form-card--dark .form-card__hint { color: var(--t-muted-on-dark); }

.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--t-on-light);
}
.form-group .req { color: #E5484D; margin-left: 3px; }
.form-card--dark .form-group label { color: var(--t-on-dark); }

.form-control {
  width: 100%;
  min-height: 50px;
  padding: 12px 16px;
  border: 1px solid var(--c-border-light);
  border-radius: var(--r);
  background: #fff;
  color: var(--t-on-light);
  transition: border-color var(--d-fast) var(--ease), box-shadow var(--d-fast) var(--ease),
    background var(--d-fast) var(--ease);
}
.form-control::placeholder { color: #9AA9BC; }
.form-control:hover { border-color: #C3D0E0; }
.form-control:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.15);
}
textarea.form-control { min-height: 128px; resize: vertical; line-height: 1.7; }

.form-card--dark .form-control {
  background: rgba(11, 20, 38, 0.55);
  border-color: rgba(232, 237, 245, 0.18);
  color: var(--t-on-dark);
}
.form-card--dark .form-control::placeholder { color: rgba(139, 155, 184, 0.85); }
.form-card--dark .form-control:focus {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.18);
}

.form-control.has-error { border-color: #E5484D; }
.field-error {
  display: none;
  margin-top: 6px;
  font-size: 13px;
  color: #E5484D;
}
.form-control.has-error ~ .field-error { display: block; }

.form-foot {
  display: flex; align-items: center; justify-content: space-between;
  gap: 18px; margin-top: 8px;
}
.form-note { font-size: 13px; color: var(--t-muted-on-light); }
.form-card--dark .form-note { color: var(--t-muted-on-dark); }

/* 提交成功提示 */
.form-success {
  display: none;
  gap: 16px;
  align-items: flex-start;
  margin-top: 20px;
  padding: 20px 22px;
  border-radius: var(--r);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.4);
}
.form-success.is-visible { display: flex; }
.form-success__icon {
  flex-shrink: 0;
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--g-accent);
  color: #fff;
}
.form-success strong { display: block; color: var(--c-trust); margin-bottom: 4px; }
.form-card--dark .form-success strong { color: #6EE7B7; }
.form-success p { font-size: 14px; color: var(--t-muted-on-light); }
.form-card--dark .form-success p { color: var(--t-muted-on-dark); }

/* --------------------------------------------------------------------------
   11. 关于我们 — 时间线
   -------------------------------------------------------------------------- */
.timeline { position: relative; max-width: 900px; margin: 0 auto; }
.timeline::before {
  content: "";
  position: absolute;
  left: 143px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, rgba(14, 165, 233, 0.15) 0%, var(--c-primary) 18%, var(--c-primary) 82%, rgba(16, 185, 129, 0.15) 100%);
}
.tl-item { position: relative; display: grid; grid-template-columns: 130px 1fr; gap: 73px; padding: 0 0 44px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item__year {
  text-align: right;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--t-on-light);
}
.tl-item__body {
  position: relative;
  padding: 22px 26px;
  border-radius: var(--r);
  background: #fff;
  border: 1px solid var(--c-border-light);
  box-shadow: var(--sh-1);
  transition: transform var(--d-base) ease-out, box-shadow var(--d-base) ease-out,
    border-color var(--d-base) var(--ease);
}
.tl-item__body:hover { transform: translateY(-4px); box-shadow: var(--sh-2); border-color: rgba(26, 86, 219, 0.22); }
.tl-item__body::before {
  content: "";
  position: absolute;
  left: -81px; top: 30px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--g-accent);
  box-shadow: 0 0 0 5px rgba(14, 165, 233, 0.16);
}
.tl-item__body h3 { font-size: 19px; margin-bottom: 8px; }
.tl-item__body p { font-size: 15px; color: var(--t-muted-on-light); }

/* --------------------------------------------------------------------------
   12. 关于我们 — 企业文化
   -------------------------------------------------------------------------- */
.culture-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.culture-card { padding: 40px 34px; text-align: left; }
.culture-card h3 { margin-bottom: 14px; }
.culture-card p { font-size: 15px; color: var(--t-muted-on-light); }

/* 服务承诺列表 */
.promise-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px 40px; }
.promise {
  display: flex; gap: 18px; align-items: flex-start;
  padding: 22px 24px;
  border-radius: var(--r);
  background: var(--c-bg-light);
  border: 1px solid var(--c-border-light);
  transition: transform var(--d-base) ease-out, box-shadow var(--d-base) ease-out;
}
.promise:hover { transform: translateY(-4px); box-shadow: var(--sh-2); }
.promise h4 { margin-bottom: 6px; }
.promise p { font-size: 14.5px; color: var(--t-muted-on-light); }

/* --------------------------------------------------------------------------
   13. 产品与服务
   -------------------------------------------------------------------------- */
.tag-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.tag {
  padding: 7px 16px;
  border-radius: var(--r-pill);
  background: #fff;
  border: 1px solid var(--c-border-light);
  font-size: 14px;
  color: var(--t-on-light);
}
.tag--accent {
  background: rgba(14, 165, 233, 0.1);
  border-color: rgba(14, 165, 233, 0.3);
  color: var(--c-primary);
  font-weight: 600;
}

.overview-panel {
  padding: 46px 48px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--c-border-light);
  box-shadow: var(--sh-1);
}
.overview-panel h2 { margin-bottom: 20px; }
.overview-panel p { color: var(--t-muted-on-light); }

/* 功能模块 */
.module {
  display: flex;
  flex-direction: column;
  padding: 36px 32px 32px;
}
.module h3 { font-size: 22px; margin-bottom: 8px; }
.module__sub { font-size: 14px; color: var(--c-primary); font-weight: 600; margin-bottom: 18px; }
.module__list { display: grid; gap: 11px; margin: 0 0 26px; flex-grow: 1; }
.module__list li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  color: var(--t-muted-on-light);
}
.module__list li::before {
  content: "";
  position: absolute; left: 0; top: 9px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--g-accent);
}
.module__foot { border-top: 1px solid var(--c-border-light); padding-top: 22px; }

/* 实施流程 */
.flow { position: relative; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 20px; }
.flow::before {
  content: "";
  position: absolute;
  left: 6%; right: 6%; top: 40px;
  height: 2px;
  background: linear-gradient(90deg, rgba(14, 165, 233, 0.25) 0%, var(--c-accent) 12%, var(--c-accent-end) 88%, rgba(16, 185, 129, 0.25) 100%);
}
.flow-step { position: relative; text-align: center; }
.flow-step__icon {
  position: relative;
  z-index: 1;
  width: 80px; height: 80px;
  margin: 0 auto 22px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: #fff;
  border: 2px solid rgba(14, 165, 233, 0.28);
  color: var(--c-primary);
  box-shadow: 0 10px 26px rgba(11, 20, 38, 0.1);
  transition: transform var(--d-base) var(--ease), box-shadow var(--d-base) var(--ease),
    border-color var(--d-base) var(--ease), color var(--d-base) var(--ease);
}
.flow-step__icon svg { width: 30px; height: 30px; }
.flow-step:hover .flow-step__icon {
  transform: translateY(-6px);
  border-color: transparent;
  color: #fff;
  background: var(--g-accent);
  box-shadow: 0 14px 30px rgba(14, 165, 233, 0.3);
}
.flow-step__no {
  position: absolute;
  top: -6px; right: calc(50% - 44px);
  z-index: 2;
  width: 26px; height: 26px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--c-primary);
  color: #fff;
  font-size: 12px; font-weight: 700;
}
.flow-step h3 { font-size: 18px; margin-bottom: 10px; }
.flow-step p { font-size: 14.5px; color: var(--t-muted-on-light); }

/* 解决方案 */
.solution { display: flex; flex-direction: column; padding: 38px 34px 34px; }
.solution__badge {
  align-self: flex-start;
  padding: 5px 14px;
  margin-bottom: 18px;
  border-radius: var(--r-pill);
  background: var(--g-accent);
  color: #fff;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.solution h3 { margin-bottom: 12px; }
.solution > p { font-size: 15px; color: var(--t-muted-on-light); margin-bottom: 22px; }
.solution__list { display: grid; gap: 10px; margin-bottom: 26px; flex-grow: 1; }
.solution__list li {
  display: flex; gap: 10px; align-items: flex-start;
  font-size: 14.5px; color: var(--t-on-light);
}
.solution__list svg { flex-shrink: 0; margin-top: 5px; color: var(--c-accent-end); }
.solution__foot { border-top: 1px solid var(--c-border-light); padding-top: 20px; }

/* --------------------------------------------------------------------------
   14. 联系我们
   -------------------------------------------------------------------------- */
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 48px;
  align-items: start;
}
.info-cards { display: grid; gap: 20px; }
.info-card {
  display: flex; gap: 18px; align-items: flex-start;
  padding: 26px 28px;
  border-radius: var(--r);
  background: #fff;
  border: 1px solid var(--c-border-light);
  box-shadow: var(--sh-1);
  transition: transform var(--d-base) ease-out, box-shadow var(--d-base) ease-out;
}
.info-card:hover { transform: translateY(-4px); box-shadow: var(--sh-2); }
.info-card h4 { margin-bottom: 6px; }
.info-card p, .info-card a { font-size: 15px; color: var(--t-muted-on-light); }
.info-card a:hover { color: var(--c-accent); }
.info-card__main { font-size: 20px !important; font-weight: 800; letter-spacing: -0.02em; color: var(--t-on-light) !important; }
.info-card__main a { font-size: 20px; font-weight: 800; color: var(--t-on-light); }

.form-center { max-width: 780px; margin: 0 auto; }

.map-section { padding-bottom: 0; }
.map-wrap {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--c-border-light);
  background: var(--c-bg-light);
  box-shadow: var(--sh-1);
}
.map-canvas { display: block; width: 100%; height: 460px; }
.map-overlay {
  position: absolute;
  left: 32px; top: 32px;
  width: 320px;
  padding: 26px 28px;
  border-radius: var(--r);
  background: rgba(255, 255, 255, 0.96);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: 0 18px 44px rgba(11, 20, 38, 0.18);
  border: 1px solid rgba(11, 20, 38, 0.06);
}
.map-overlay h3 { font-size: 20px; margin-bottom: 10px; }
.map-overlay p { font-size: 14.5px; color: var(--t-muted-on-light); }
.map-overlay__row { display: flex; gap: 10px; margin-top: 16px; font-size: 14px; color: var(--t-on-light); }
.map-overlay__row svg { flex-shrink: 0; margin-top: 3px; color: var(--c-primary); }
.map-note {
  margin-top: 18px;
  font-size: 13.5px;
  color: var(--t-muted-on-light);
}

/* 通用页面底部 CTA */
.bottom-cta {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 72px 0;
  background: var(--g-hero);
  color: var(--t-on-dark);
}
.bottom-cta::before {
  content: "";
  position: absolute;
  width: 620px; height: 620px;
  left: 50%; top: -380px; transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.26) 0%, rgba(14, 165, 233, 0) 70%);
  z-index: -1;
}
.bottom-cta__inner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 28px;
}
.bottom-cta h2 { color: #fff; font-size: 30px; margin-bottom: 10px; }
.bottom-cta p { color: #A9BBD4; }

/* --------------------------------------------------------------------------
   15. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--c-bg-dark);
  color: var(--t-on-dark);
  padding: 76px 0 0;
  border-top: 1px solid rgba(232, 237, 245, 0.07);
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 56px;
  padding-bottom: 52px;
}
.footer-brand .logo { margin-bottom: 20px; }
.footer-brand p { font-size: 14.5px; color: var(--t-muted-on-dark); max-width: 360px; }
.footer-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.footer-badges span {
  padding: 6px 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--c-border-dark);
  background: rgba(30, 58, 95, 0.4);
  font-size: 12.5px;
  color: var(--t-muted-on-dark);
}
.footer-col h4 { font-size: 16px; color: #fff; margin-bottom: 22px; }
.footer-col li + li { margin-top: 12px; }
.footer-col a, .footer-col p { font-size: 14.5px; color: var(--t-muted-on-dark); }
.footer-col a {
  position: relative;
  display: inline-block;
}
.footer-col a::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: -3px;
  height: 1px; background: currentColor;
  transform: scaleX(0); transform-origin: left;
  transition: transform 250ms ease-out;
}
.footer-col a:hover { color: #fff; }
.footer-col a:hover::after { transform: scaleX(1); }
.footer-contact-list { display: grid; gap: 14px; }
.footer-contact-list li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact-list svg { flex-shrink: 0; margin-top: 4px; color: var(--c-accent); }
.footer-bottom {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 14px;
  padding: 24px 0 30px;
  border-top: 1px solid rgba(232, 237, 245, 0.08);
  font-size: 13.5px;
  color: var(--t-muted-on-dark);
}
.footer-bottom p { font-size: 13.5px; }

/* 回到顶部 */
.to-top {
  position: fixed;
  right: 24px; bottom: 24px;
  z-index: 90;
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border: none;
  border-radius: 50%;
  background: var(--g-accent);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 10px 26px rgba(14, 165, 233, 0.32);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--d-base) var(--ease), transform var(--d-base) var(--ease),
    visibility var(--d-base) var(--ease), filter var(--d-fast) ease-out;
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { filter: brightness(1.1); }

/* --------------------------------------------------------------------------
   16. 滚动进入动效
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--d-enter) var(--ease), transform var(--d-enter) var(--ease);
  will-change: opacity, transform;
}
.reveal.is-revealed { opacity: 1; transform: none; }

/* --------------------------------------------------------------------------
   17. 响应式 — 平板 768-1023px / 移动端 <768px
   -------------------------------------------------------------------------- */
@media (max-width: 1023px) {
  :root { --section-y: 76px; }

  h1 { font-size: 40px; }
  h2 { font-size: 30px; }

  .hero { min-height: auto; padding: calc(var(--header-h) + 56px) 0 72px; }
  .hero h1 { font-size: 40px; }
  .page-hero h1 { font-size: 36px; }

  .grid--4, .biz-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .adv-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; }
  .adv-item { padding: 26px 28px; }
  .adv-item + .adv-item { padding-left: 28px; }
  .adv-item:nth-child(odd) { padding-left: 0; border-left: none; }
  .adv-item:nth-child(n + 3) { border-top: 1px solid var(--c-border-light); }

  .culture-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flow { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px 20px; }
  .flow::before { display: none; }
  .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px 24px; }
  .stats-grid--divided .stat:nth-child(odd) { border-left: none; }
  .stats-grid--divided .stat:nth-child(n + 3) { border-top: 1px solid var(--c-border-dark); padding-top: 32px; }

  .split { gap: 48px; }
  .cta-inner { grid-template-columns: 1fr; gap: 44px; }
  .contact-layout { grid-template-columns: 1fr; gap: 36px; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 44px; }
  .footer-brand { grid-column: 1 / -1; }

  .timeline::before { left: 103px; }
  .tl-item { grid-template-columns: 90px 1fr; gap: 73px; }
  .tl-item__body::before { left: -81px; }
}

@media (max-width: 767px) {
  :root { --section-y: 60px; --header-h: 66px; --gutter: 20px; }

  h1 { font-size: 32px; }
  h2 { font-size: 26px; }
  h3 { font-size: 21px; }

  .section-head { margin-bottom: 38px; }
  .section-head p { font-size: 15.5px; }

  /* 导航折叠为汉堡菜单 */
  .nav-toggle { display: block; }
  .nav {
    display: none;
    position: fixed;
    left: 0; right: 0;
    top: var(--header-h);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 20px 22px;
    background: rgba(9, 17, 32, 0.98);
    border-bottom: 1px solid var(--c-border-dark);
    box-shadow: 0 24px 44px rgba(0, 0, 0, 0.4);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }
  .nav.is-open { display: flex; }
  .nav__link {
    padding: 15px 4px;
    font-size: 16px;
    border-bottom: 1px solid rgba(232, 237, 245, 0.07);
    border-radius: 0;
  }
  .nav__link::after { display: none; }
  .nav__link.is-active { color: #7FD4F5; }
  .header-actions .btn { display: none; }

  /* Hero 单列 */
  .hero { padding: calc(var(--header-h) + 44px) 0 56px; }
  .hero__inner { grid-template-columns: 1fr; gap: 44px; }
  .hero h1 { font-size: 32px; margin-bottom: 18px; }
  .hero__lead { font-size: 16px; margin-bottom: 30px; }
  .hero__meta { margin-top: 32px; gap: 12px 24px; }
  /* 移动端取消悬浮徽标定位，避免遮挡数据统计 */
  .hero-panel__float {
    position: static;
    margin-top: 22px;
    background: rgba(11, 20, 38, 0.6);
  }
  .page-hero { padding: calc(var(--header-h) + 48px) 0 52px; }
  .page-hero h1 { font-size: 30px; }
  .page-hero p { font-size: 16px; }

  /* 卡片单列 */
  .grid--2, .grid--3, .grid--4, .biz-grid, .culture-grid,
  .promise-grid, .flow, .stats-grid { grid-template-columns: 1fr; }

  .adv-grid { grid-template-columns: 1fr; }
  .adv-item,
  .adv-item + .adv-item,
  .adv-item:nth-child(odd) { padding: 24px 0; border-left: none; border-top: none; }
  .adv-item + .adv-item { border-top: 1px solid var(--c-border-light); }
  .adv-item__num { font-size: 38px; margin-bottom: 14px; }

  .split { grid-template-columns: 1fr; gap: 36px; }
  .split--reverse .split__media { order: 0; }
  .metric-row { grid-template-columns: 1fr; gap: 12px; }
  .stats-grid--divided .stat { border-left: none !important; border-top: none !important; padding-top: 0; }
  .stats-grid { gap: 32px; }
  .stat__num { font-size: 38px; }

  .form-row { grid-template-columns: 1fr; gap: 0; }
  .form-card { padding: 26px 22px; }
  .btn { min-height: 48px; width: 100%; }
  .btn-row .btn { width: 100%; }
  .biz-card__more { width: auto; }
  .form-foot { flex-direction: column; align-items: stretch; }

  /* 时间线移动端改为单列 */
  .timeline { padding-left: 0; }
  .timeline::before { left: 7px; }
  .tl-item { grid-template-columns: 1fr; gap: 12px; padding-left: 34px; padding-bottom: 32px; }
  .tl-item__year { text-align: left; font-size: 18px; }
  .tl-item__body { padding: 20px 22px; }
  .tl-item__body::before { left: -34px; top: 26px; }

  .map-canvas { height: 340px; }
  .map-overlay {
    position: static;
    width: auto;
    margin: 0;
    border-radius: 0;
    box-shadow: none;
    border: none;
    border-top: 1px solid var(--c-border-light);
  }
  .map-wrap { display: flex; flex-direction: column-reverse; }
  .map-overlay { background: transparent; padding: 22px; }

  .bottom-cta { padding: 52px 0; }
  .bottom-cta h2 { font-size: 24px; }
  .bottom-cta__inner { flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; padding-bottom: 36px; }
  .site-footer { padding-top: 56px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .to-top { right: 16px; bottom: 16px; }
}

/* 移动端性能：仅保留淡入，取消位移与 hover 效果 */
@media (max-width: 767px), (hover: none) {
  .reveal { transform: none; }
  .card:hover, .info-card:hover, .promise:hover, .tl-item__body:hover,
  .flow-step:hover .flow-step__icon { transform: none; }
  .card:hover, .info-card:hover, .promise:hover, .tl-item__body:hover { box-shadow: var(--sh-1); }
  .btn--primary:hover { transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .btn--primary:hover, .card:hover { transform: none; }
}

/* ==========================================================================
   18. 表单反垃圾字段与提交失败提示
   ========================================================================== */

/* 蜜罐字段：真人看不见，脚本常会填。
   用绝对定位移出视口而非 display:none —— 部分机器人会跳过 display:none 的字段 */
.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

/* 提交失败提示（与成功提示同构，便于统一维护） */
.form-failure {
  display: none;
  gap: 16px;
  align-items: flex-start;
  margin-top: 20px;
  padding: 20px 22px;
  border-radius: var(--r);
  background: rgba(229, 72, 77, 0.08);
  border: 1px solid rgba(229, 72, 77, 0.38);
}
.form-failure.is-visible { display: flex; }
.form-failure__icon {
  flex-shrink: 0;
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: #E5484D;
  color: #fff;
}
.form-failure strong { display: block; color: #C62A2F; margin-bottom: 4px; }
.form-failure p { font-size: 14px; color: var(--t-muted-on-light); }
.form-card--dark .form-failure {
  background: rgba(229, 72, 77, 0.14);
  border-color: rgba(229, 72, 77, 0.45);
}
.form-card--dark .form-failure strong { color: #FF9A9E; }
.form-card--dark .form-failure p { color: var(--t-muted-on-dark); }

/* 提交中：按钮禁用态 */
.btn[disabled],
.btn:disabled {
  cursor: not-allowed;
  opacity: 0.72;
  filter: saturate(0.7);
  transform: none !important;
}

/* 打印 */
@media print {
  .site-header, .to-top, .bottom-cta { display: none; }
  body { color: #000; }
  .reveal { opacity: 1; transform: none; }
}