/* ==========================================================================
   北京诚立集团有限公司 · 公共样式表 style.css
   分层：Tailwind 负责布局与原子类，本文件负责主题变量、组件外观与动效。
   维护提示：改品牌色需同步 tools/tailwind.config.js 中的同名色值。
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 主题变量
   -------------------------------------------------------------------------- */
:root {
  --navy: #0A2540;          /* 主色 · 深蓝 */
  --navy-700: #0F2E4E;
  --navy-600: #14385C;
  --navy-500: #1B3A5C;      /* 辅助色 · 中蓝 */
  --navy-400: #2C5480;
  --navy-300: #4E7BA8;
  --gold: #C9A96A;          /* 点缀色 · 金 */
  --gold-600: #B08F4E;
  --gold-ink: #8A6A2E;      /* 浅底上的金色小字专用：对白底 5.02、对 #F5F7FA 4.68，满足 WCAG AA */
  --gold-400: #DBC08D;
  --gold-200: #F0E3C6;

  --bg: #FFFFFF;
  --bg-soft: #F5F7FA;
  --line: #E8EDF3;
  --line-dark: rgba(255, 255, 255, .14);

  --text: #333333;
  --text-soft: #5B6B7C;
  --text-mute: #637386;     /* 小字辅助色：对白底 4.85、对 #F5F7FA 4.52，满足 WCAG AA（原 #8595A6 仅 3.07/2.86） */
  --text-light: rgba(255, 255, 255, .78);
  --text-light-dim: rgba(255, 255, 255, .58);

  --radius: 10px;
  --radius-lg: 12px;
  --radius-pill: 999px;
  --shadow: 0 4px 20px rgba(10, 37, 64, .08);
  --shadow-lg: 0 18px 48px rgba(10, 37, 64, .14);
  --shadow-xl: 0 28px 70px rgba(10, 37, 64, .22);

  --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  --header-h: 68px;
}

/* --------------------------------------------------------------------------
   2. 基础排版与通用容器
   -------------------------------------------------------------------------- */
* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;   /* 锚点滚动时避开固定页头 */
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

/* 「跳到主要内容」：键盘用户按第一个 Tab 就能直达正文，不必逐个穿过整条导航。
   WCAG 2.4.1 Bypass Blocks。平时移出视口，获得焦点时滑入。 */
.skip-link {
  position: fixed; left: 12px; top: -64px; z-index: 300;
  padding: 11px 20px; border-radius: 0 0 var(--radius) var(--radius);
  background: var(--navy); color: #fff;
  font-size: 14px; font-weight: 700; line-height: 1.4; text-decoration: none;
  box-shadow: var(--shadow-lg);
  transition: top .18s ease;
}
.skip-link:focus { top: 0; outline: 2px solid var(--gold); outline-offset: 2px; }

h1, h2, h3, h4, h5 { margin: 0; font-weight: 700; color: var(--navy); line-height: 1.32; letter-spacing: -.2px; }
h1 { font-size: 44px; }
h2 { font-size: 32px; }
h3 { font-size: 19px; }
h4 { font-size: 16px; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; transition: color .25s ease, background-color .25s ease, border-color .25s ease; }
img, svg { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: inherit; }

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 数字（电话、日期、统计值）统一等宽，避免跳动 */
.tnum { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }

/* 无障碍：仅屏幕阅读器可见 */
.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;
}

::selection { background: var(--gold); color: var(--navy); }

/* --------------------------------------------------------------------------
   3. 按钮
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
  transition: transform .25s ease, box-shadow .25s ease, background-color .25s ease, color .25s ease, border-color .25s ease;
}
.btn i { font-size: 14px; }
.btn:hover { transform: translateY(-2px); }

.btn-gold {
  background: linear-gradient(135deg, var(--gold-400), var(--gold) 46%, var(--gold-600));
  color: var(--navy);
  box-shadow: 0 10px 26px rgba(201, 169, 106, .34);
}
.btn-gold:hover { box-shadow: 0 16px 34px rgba(201, 169, 106, .46); }

.btn-navy { background: var(--navy); color: #fff; box-shadow: 0 10px 26px rgba(10, 37, 64, .24); }
.btn-navy:hover { background: var(--navy-500); }

.btn-line { background: transparent; color: var(--navy); border-color: rgba(10, 37, 64, .22); }
.btn-line:hover { border-color: var(--navy); background: rgba(10, 37, 64, .04); }

.btn-line-light { background: rgba(255, 255, 255, .06); color: #fff; border-color: rgba(255, 255, 255, .34); }
.btn-line-light:hover { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .7); }

.btn-sm { padding: 9px 18px; font-size: 14px; }
.btn-lg { padding: 16px 34px; font-size: 16px; }
.btn-block { width: 100%; }

/* 文字链 */
.link-more {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 600; color: var(--navy-400);
}
.link-more i { font-size: 12px; transition: transform .25s ease; }
.link-more:hover { color: var(--gold-ink); }
.link-more:hover i { transform: translateX(4px); }
.link-more-light { color: var(--gold-400); }
.link-more-light:hover { color: var(--gold); }

/* --------------------------------------------------------------------------
   4. 页头 / 导航 / 移动端抽屉
   -------------------------------------------------------------------------- */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 60; }

.topbar {
  background: var(--navy);
  color: var(--text-light);
  font-size: 13px;
  height: 38px;
  transition: height .3s ease, opacity .3s ease;
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 38px; }
.topbar-slogan { display: flex; align-items: center; gap: 8px; }
.topbar-slogan i { color: var(--gold); font-size: 12px; }
.topbar-links { display: flex; align-items: center; gap: 14px; }
.topbar-links a { display: flex; align-items: center; gap: 7px; }
.topbar-links a:hover { color: var(--gold); }
.topbar-links i { color: var(--gold); font-size: 12px; }
.topbar-sep { width: 1px; height: 13px; background: var(--line-dark); }

.navbar {
  background: rgba(255, 255, 255, .94);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s ease, background-color .3s ease;
}
.navbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: var(--header-h); }

/* 滚动后进入「紧凑 + 立体」状态 */
.site-header.is-scrolled .topbar { height: 0; opacity: 0; overflow: hidden; }
.site-header.is-scrolled .navbar { box-shadow: 0 8px 26px rgba(10, 37, 64, .1); background: rgba(255, 255, 255, .98); }

/* LOGO */
.logo { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
/* 品牌标记：底色与圆角由容器承担，容器内只放 logo-glyph.svg 字形。
   与集团官网同一处理方式，圆角取尺寸的 25%（44 × .25 = 11px）。 */
.logo-mark {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  flex: none; overflow: hidden;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--navy-500), var(--navy));
  box-shadow: 0 6px 18px rgba(10, 37, 64, .22);
}
/* 字形占容器的 70.8%，容器缩放时比例不变 */
.logo-mark img { display: block; width: 70.8%; height: 70.8%; }
/* 中英文两行。行距用 flex gap 控制，不要靠 line-height 硬挤——
   中文「诚立集团」占满 em 框，line-height 拉开会把中文行也一起撑高，两行反而更贴。 */
.logo-text { display: flex; flex-direction: column; gap: 7px; line-height: 1.15; }
.logo-text strong { font-size: 20px; font-weight: 700; color: var(--navy); letter-spacing: .5px; }
/* 英文副标：加粗 + 金色，与左侧金色字形呼应 */
.logo-text small {
  font-size: 9.5px; font-weight: 700;
  letter-spacing: 2.2px; color: var(--gold);
  margin-right: -2.2px;   /* 抵消末尾字的 letter-spacing，左侧对齐更准 */
}
.logo-light .logo-text strong { color: #fff; }
/* 页脚是深底，金色对比度 6.9:1，保持与页头同一色，不再降透明度 */
.logo-light .logo-text small { color: var(--gold); }

/* 主导航 */
.nav-menu { display: flex; align-items: center; gap: 2px; }
.nav-menu > li { position: relative; }
.nav-menu > li > a {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 15px;
  border-radius: 8px;
  font-size: 15px; font-weight: 500; color: var(--navy);
}
.nav-menu > li > a i { font-size: 10px; color: var(--text-mute); transition: transform .25s ease; }
.nav-menu > li > a:hover { color: var(--navy-400); background: rgba(10, 37, 64, .045); }
.nav-menu > li > a.is-active { color: var(--navy); font-weight: 700; }
.nav-menu > li > a.is-active::after {
  content: ""; position: absolute; left: 50%; bottom: 2px;
  width: 20px; height: 2px; margin-left: -10px; border-radius: 2px; background: var(--gold);
}
.nav-menu > li > a.nav-hot { color: var(--navy); font-weight: 700; }
.nav-menu > li > a.nav-hot::before {
  content: "核心"; position: absolute; top: -2px; right: 2px;
  padding: 1px 5px; border-radius: 5px;
  background: var(--gold); color: var(--navy);
  font-size: 9px; font-weight: 700; letter-spacing: .5px; transform: scale(.92);
}

/* 二级菜单 */
.sub-menu {
  position: absolute; top: calc(100% + 10px); left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 246px; padding: 10px;
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden;
  transition: opacity .25s ease, transform .25s ease, visibility .25s;
}
.sub-menu::before {
  content: ""; position: absolute; top: -6px; left: 50%; margin-left: -6px;
  width: 12px; height: 12px; background: #fff;
  border-left: 1px solid var(--line); border-top: 1px solid var(--line);
  transform: rotate(45deg);
}
.has-sub:hover .sub-menu,
.has-sub:focus-within .sub-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.has-sub:hover > a i { transform: rotate(180deg); }
.sub-menu a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 13px; border-radius: 8px;
  font-size: 14px; color: var(--text-soft);
}
.sub-menu a i { width: 16px; color: var(--gold-600); font-size: 13px; text-align: center; }
.sub-menu a:hover, .sub-menu a.is-active { background: var(--bg-soft); color: var(--navy); font-weight: 600; }

.nav-actions { display: flex; align-items: center; gap: 12px; }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  padding: 0; border: 1px solid var(--line); border-radius: 10px; background: #fff;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-toggle span {
  display: block; width: 18px; height: 2px; border-radius: 2px; background: var(--navy);
  transition: transform .3s ease, opacity .3s ease;
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 抽屉 */
.drawer-mask {
  position: fixed; inset: 0; z-index: 70;
  background: rgba(10, 37, 64, .5);
  backdrop-filter: blur(2px);
  opacity: 0; transition: opacity .3s ease;
}
.drawer-mask.is-open { opacity: 1; }
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 80;
  width: 306px; max-width: 86vw;
  display: flex; flex-direction: column;
  background: #fff; box-shadow: var(--shadow-xl);
  transform: translateX(102%);
  /* visibility 与 transform 一起过渡：关闭态彻底移出无障碍树与 Tab 序列。
     只用 translateX 移出视口时，抽屉里 12 个链接仍可被键盘 Tab 聚焦，
     且它们所在的容器标着 aria-hidden="true"，属无障碍反模式。
     visibility 的过渡语义是「从 visible 出发的整个过程都可见」，
     因此展开时立即可见、收起时等动画走完才隐藏，不影响过渡效果。 */
  visibility: hidden;
  transition: transform .32s cubic-bezier(.4, 0, .2, 1), visibility .32s;
  overflow-y: auto;
}
.drawer.is-open { transform: translateX(0); visibility: visible; }
.drawer-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 18px; border-bottom: 1px solid var(--line);
}
.drawer-close {
  width: 36px; height: 36px; border: 1px solid var(--line); border-radius: 9px;
  background: #fff; color: var(--navy); font-size: 16px;
}
.drawer-nav { flex: 1; padding: 12px 12px 20px; }
.drawer-nav a {
  position: relative; display: flex; align-items: center; gap: 9px;
  padding: 12px 14px; border-radius: 9px;
  font-size: 15px; color: var(--navy);
}
.drawer-nav a:hover { background: var(--bg-soft); }
.drawer-nav a.is-active { background: rgba(201, 169, 106, .14); font-weight: 700; }
.drawer-nav a.drawer-hot { font-weight: 700; }
.drawer-nav a.drawer-hot i { color: var(--gold-600); }
.drawer-group {
  margin: 14px 0 4px; padding: 0 14px;
  font-size: 12px; letter-spacing: 1.6px; color: var(--text-mute); font-weight: 600;
}
.drawer-foot { padding: 16px; border-top: 1px solid var(--line); background: var(--bg-soft); }
.drawer-tip { margin-top: 10px; font-size: 12.5px; color: var(--text-mute); text-align: center; }

/* --------------------------------------------------------------------------
   5. 页脚
   -------------------------------------------------------------------------- */
.site-footer { background: var(--navy); color: var(--text-light); font-size: 14px; }
.footer-main { padding: 62px 0 46px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.35fr;
  gap: 40px;
}
.footer-desc { margin-top: 18px; font-size: 13.5px; line-height: 1.9; color: var(--text-light-dim); }
.footer-slogan {
  margin-top: 14px; padding-left: 12px;
  border-left: 2px solid var(--gold);
  font-size: 13.5px; color: var(--gold-400); font-weight: 600; letter-spacing: .3px;
}
.footer-qr { display: flex; align-items: center; gap: 14px; margin-top: 20px; }
.qr-box {
  width: 92px; height: 92px; padding: 5px; flex-shrink: 0;
  background: #fff; border-radius: 9px;
}
.qr-box svg, .qr-box img { width: 100%; height: 100%; display: block; object-fit: contain; }
.footer-qr-tip { font-size: 12.5px; line-height: 1.7; color: var(--text-light); }
.footer-qr-tip span { color: var(--text-light-dim); }

.footer-title {
  position: relative; margin-bottom: 20px; padding-bottom: 12px;
  font-size: 15px; font-weight: 700; color: #fff; letter-spacing: .4px;
}
.footer-title::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 30px; height: 2px; border-radius: 2px; background: var(--gold);
}
.footer-links li + li { margin-top: 11px; }
.footer-links a { font-size: 13.5px; color: var(--text-light-dim); }
.footer-links a:hover { color: var(--gold); }

.footer-cinfo li + li { margin-top: 16px; }
.fc-label { display: block; font-size: 11.5px; letter-spacing: 1.4px; color: var(--gold-400); font-weight: 600; }
.fc-value { display: block; margin-top: 4px; font-size: 14.5px; color: #fff; font-weight: 600; line-height: 1.6; }
a.fc-value:hover { color: var(--gold); }
.fc-hint { display: block; margin-top: 3px; font-size: 12px; color: var(--text-light-dim); }

.footer-bar { background: var(--navy-700); border-top: 1px solid var(--line-dark); }
.footer-bar-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding-top: 18px; padding-bottom: 8px;
  flex-wrap: wrap;
}
.footer-copy { font-size: 13px; color: var(--text-light-dim); }
.footer-copy a { color: var(--text-light-dim); }
.footer-copy a:hover { color: var(--gold); }
.footer-links-inline { display: flex; align-items: center; gap: 10px; font-size: 13px; color: rgba(255, 255, 255, .3); }
.footer-links-inline a { color: var(--text-light-dim); }
.footer-links-inline a:hover { color: var(--gold); }
.footer-compliance { padding-bottom: 18px; }
/* .38 的白色对页脚 #0F2E4E 只有 3.26：法务免责声明最不该看不清，提到 .62（≈6.4）。 */
.footer-compliance p { font-size: 12px; color: rgba(255, 255, 255, .62); }

/* --------------------------------------------------------------------------
   6. 右下角悬浮工具条
   -------------------------------------------------------------------------- */
.float-dock {
  position: fixed; right: 18px; bottom: 26px; z-index: 55;
  display: flex; flex-direction: column; gap: 10px;
}
.float-btn {
  position: relative;
  width: 50px; height: 50px;
  display: grid; place-items: center;
  border: 1px solid var(--line); border-radius: 13px;
  background: #fff; color: var(--navy); font-size: 19px;
  box-shadow: var(--shadow);
  transition: transform .25s ease, background-color .25s ease, color .25s ease, box-shadow .25s ease;
}
.float-btn:hover { background: var(--navy); color: var(--gold); transform: translateX(-3px); box-shadow: var(--shadow-lg); }
.float-tip {
  position: absolute; right: calc(100% + 10px); top: 50%; transform: translateY(-50%) scale(.94);
  padding: 7px 12px; border-radius: 8px;
  background: var(--navy); color: #fff; font-size: 12.5px; white-space: nowrap;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .22s ease, transform .22s ease, visibility .22s;
}
.float-btn:hover .float-tip { opacity: 1; visibility: visible; transform: translateY(-50%) scale(1); }

/* 二维码浮层：包裹层统一承载 hover，避免鼠标穿越间隙时闪断 */
.float-qr { position: relative; }
.qr-pop {
  position: absolute; right: calc(100% + 10px); bottom: 0;
  width: 130px; padding: 14px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s;
}
.qr-pop-img { width: 100px; height: 100px; }
.qr-pop-img svg, .qr-pop-img img { width: 100%; height: 100%; display: block; object-fit: contain; }
.float-qr:hover .qr-pop,
.qr-pop.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
.float-qr:hover .float-btn { background: var(--navy); color: var(--gold); }

.float-top {
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s, background-color .25s ease, color .25s ease;
}
.float-top.is-show { opacity: 1; visibility: visible; transform: translateY(0); }
.float-top.is-show:hover { transform: translateX(-3px); }

/* --------------------------------------------------------------------------
   7. 首屏 Hero 与内页 Banner
   -------------------------------------------------------------------------- */
.hero {
  position: relative; overflow: hidden;
  padding: 150px 0 96px;
  background: radial-gradient(1100px 620px at 82% -8%, #1B3A5C 0%, transparent 62%),
              radial-gradient(760px 520px at 6% 108%, rgba(201, 169, 106, .13) 0%, transparent 60%),
              linear-gradient(160deg, #0A2540 0%, #123253 52%, #0A2540 100%);
  color: #fff;
}
/* 网格纹理 */
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(900px 520px at 50% 34%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(900px 520px at 50% 34%, #000 0%, transparent 78%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero-grid { display: grid; grid-template-columns: 1.12fr .88fr; gap: 56px; align-items: center; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 16px 7px 10px; border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(201, 169, 106, .42);
  font-size: 13px; color: var(--gold-400); font-weight: 500;
}
.hero-badge b {
  padding: 2px 8px; border-radius: var(--radius-pill);
  background: var(--gold); color: var(--navy); font-size: 11px; font-weight: 700;
}
.hero h1 {
  margin-top: 22px;
  font-size: 50px; line-height: 1.18; color: #fff; letter-spacing: -1px;
}
.hero h1 em { font-style: normal; color: var(--gold); }
.hero-sub {
  margin-top: 20px; font-size: 16.5px; line-height: 1.95;
  color: var(--text-light); max-width: 620px;
}
.hero-tags {
  display: flex; flex-wrap: wrap; gap: 9px; margin-top: 24px;
}
.hero-tags span {
  padding: 6px 14px; border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .13);
  font-size: 13px; color: var(--text-light);
}
.hero-tags span i { margin-right: 6px; color: var(--gold); font-size: 11px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.hero-note { display: flex; align-items: center; gap: 8px; margin-top: 18px; font-size: 13px; color: var(--text-light-dim); }
.hero-note i { color: var(--gold); }

/* Hero 右侧：AI 能力示意面板 */
.hero-panel {
  position: relative;
  padding: 24px;
  border-radius: 16px;
  background: linear-gradient(165deg, rgba(255, 255, 255, .1), rgba(255, 255, 255, .03));
  border: 1px solid rgba(255, 255, 255, .16);
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(6px);
}
.hero-panel-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 14px; border-bottom: 1px solid rgba(255, 255, 255, .12); }
.hero-panel-head strong { font-size: 14.5px; color: #fff; font-weight: 600; }
.hero-panel-head .dot { display: inline-flex; align-items: center; gap: 6px; font-size: 11.5px; color: var(--gold-400); }
.hero-panel-head .dot::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 3px rgba(201, 169, 106, .22); }
.hero-panel-list { margin-top: 6px; }
.hero-panel-list li {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 2px; border-bottom: 1px dashed rgba(255, 255, 255, .1);
  font-size: 13.5px; color: var(--text-light);
}
.hero-panel-list li:last-child { border-bottom: 0; }
.hero-panel-list li i {
  width: 30px; height: 30px; flex-shrink: 0;
  display: grid; place-items: center; border-radius: 9px;
  background: rgba(201, 169, 106, .16); color: var(--gold); font-size: 13px;
}
.hero-panel-list li b { margin-left: auto; color: #fff; font-size: 13px; font-variant-numeric: tabular-nums; }

/* Hero 底部数据条 */
.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  margin-top: 62px; padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, .13);
}
.hero-stats li { padding: 0 12px; }
.hero-stats li + li { border-left: 1px solid rgba(255, 255, 255, .13); }
.hero-stat-num { font-size: 34px; font-weight: 700; color: var(--gold); line-height: 1.2; font-variant-numeric: tabular-nums; }
.hero-stat-num sub { font-size: 15px; font-weight: 600; margin-left: 3px; bottom: 0; color: var(--gold-400); }
.hero-stat-label { margin-top: 5px; font-size: 13px; color: var(--text-light-dim); }

/* 内页 Banner */
.page-banner {
  position: relative; overflow: hidden;
  padding: 148px 0 66px;
  background: radial-gradient(900px 460px at 88% -20%, #1B3A5C 0%, transparent 64%),
              linear-gradient(150deg, #0A2540 0%, #123253 58%, #0A2540 100%);
  color: #fff;
}
.page-banner::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: radial-gradient(760px 420px at 74% 20%, #000, transparent 76%);
  -webkit-mask-image: radial-gradient(760px 420px at 74% 20%, #000, transparent 76%);
}
.page-banner .container { position: relative; z-index: 2; }
.banner-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 15px; border-radius: var(--radius-pill);
  background: rgba(201, 169, 106, .14); border: 1px solid rgba(201, 169, 106, .4);
  font-size: 12.5px; letter-spacing: 1.6px; color: var(--gold-400); font-weight: 600;
}
.page-banner h1 { margin-top: 20px; font-size: 42px; color: #fff; letter-spacing: -.6px; }
.banner-sub { margin-top: 16px; max-width: 780px; font-size: 16px; line-height: 1.92; color: var(--text-light); }
.breadcrumb { display: flex; align-items: center; gap: 8px; margin-top: 26px; font-size: 13px; color: var(--text-light-dim); }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb i { font-size: 9px; opacity: .6; }
.breadcrumb span { color: var(--gold-400); }

/* 内页 Banner 场景配图：同一套品牌视觉（tools/make_illus.py）。
   与正文（h1 / .banner-sub 最长 780px）并排需要版心留白，
   故仅在版心达到最大宽度（1240px）以上才显示，窄屏直接隐藏，避免压字。 */
.banner-fig { display: none; }
@media (min-width: 1280px) {
  .banner-fig {
    display: block; position: absolute; right: 0; top: 50%;
    width: 400px; height: auto; transform: translateY(-50%);
    opacity: 1; pointer-events: none;
    /* 描边只有 2px，缩到 400px 后会变细，用一层极淡描边光提一点可读性 */
    filter: drop-shadow(0 0 6px rgba(170, 203, 236, .22));
  }
}

/* --------------------------------------------------------------------------
   8. 区块通用骨架
   -------------------------------------------------------------------------- */
.section { padding: 84px 0; }
.section-soft { background: var(--bg-soft); }
.section-navy { background: var(--navy); color: var(--text-light); }
.section-navy h2, .section-navy h3 { color: #fff; }
/* 兜底：步骤卡是白底，深色区块里的 h3 若继承 #fff 就成了「白底白字」（曾发生在
   ai-solution.html 的「AI 落地实施流程」：标题与 .step-meta 整行都看不见）。
   卡片自带白底，卡内文字一律回到浅底配色。 */
.section-navy .step h3 { color: var(--navy); }
.section-navy .step .step-meta { color: var(--text-mute); }
.section-navy .step .step-meta b { color: var(--navy); }
.section-navy .step p { color: var(--text-soft); }
.section-tight { padding: 62px 0; }

.section-head { max-width: 760px; }
.section-head-center { margin: 0 auto; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  /* 默认按浅底处理：用 --gold-ink（对白底 5.02 / 浅底 4.68）。
     深底区块各自覆写为亮金，否则深底上会看不清。 */
  font-size: 12.5px; font-weight: 700; letter-spacing: 2.4px; color: var(--gold-ink);
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--gold); border-radius: 2px; }
.section-head-center .eyebrow::after { content: ""; width: 26px; height: 2px; background: var(--gold); border-radius: 2px; }
.section-navy .eyebrow { color: var(--gold); }
/* CTA 区是深色渐变（radial 高光 #1B3A5C），金色小字要用更亮的 --gold：
   #B08F4E 对 #1B3A5C 只有 3.81:1，#C9A96A 是 5.18:1。 */
.cta-band .eyebrow { color: var(--gold); }
.section-title { margin-top: 14px; font-size: 32px; }
.section-sub { margin-top: 16px; font-size: 15.5px; line-height: 1.95; color: var(--text-soft); }
.section-navy .section-sub { color: var(--text-light); }
.section-sub p + p { margin-top: 14px; }
.section-head.is-left { max-width: 760px; }

/* 区块底部动作区 */
.section-actions { margin-top: 40px; text-align: center; }
.section-actions-left { text-align: left; }

/* 顶部提示条 */
.notice-bar {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 16px 20px; border-radius: var(--radius);
  background: rgba(201, 169, 106, .09);
  border: 1px solid rgba(201, 169, 106, .34);
  border-left: 3px solid var(--gold);
  font-size: 13.5px; line-height: 1.85; color: var(--navy-600);
}
.notice-bar i { margin-top: 4px; color: var(--gold-600); }

/* --------------------------------------------------------------------------
   9. 卡片体系
   -------------------------------------------------------------------------- */

/* 栅格子项默认 min-width:auto，会被内部的宽内容（如 min-width 的表格）顶开，
   导致整列撑破视口。统一允许收缩，宽内容交给各自的滚动容器处理。 */
.grid-2 > *, .grid-3 > *, .grid-4 > *,
.grid-service > *, .metric-grid > *, .case-grid > *,
.steps > *, .visit-grid > *, .check-list > *,
.form-grid > *, .contact-grid > *, .cta-inner > *, .footer-grid > * { min-width: 0; }

.card {
  position: relative;
  padding: 26px;
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); box-shadow: var(--shadow);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(201, 169, 106, .5); }
.card h3 { font-size: 17.5px; }
.card p { margin-top: 10px; font-size: 14px; line-height: 1.85; color: var(--text-soft); }
.card-flat { box-shadow: none; }
.card-flat:hover { box-shadow: var(--shadow); }

/* 卡片内的小标题与说明（复合版本负责顶住 .card h3 / .card p 的更高权重） */
.card-title-md, .card h3.card-title-md { font-size: 16px; }
.card-note, .card p.card-note { margin-top: 8px; font-size: 13px; color: var(--text-mute); }

/* 图标 */
.icon-box {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  border-radius: 13px;
  background: linear-gradient(140deg, rgba(27, 58, 92, .1), rgba(201, 169, 106, .14));
  color: var(--navy); font-size: 21px;
  transition: background .3s ease, color .3s ease, transform .3s ease;
}
.icon-box-sm { width: 44px; height: 44px; font-size: 17px; border-radius: 11px; }
.card:hover .icon-box { background: linear-gradient(140deg, var(--navy-500), var(--navy)); color: var(--gold); transform: scale(1.05); }

/* 金色调图标箱：品牌金调由**箱底**承载，图标一律用深蓝。
   千万不要写成 color: var(--gold-600)：#B08F4E 配这层浅金底只有 2.71:1 对比度，
   远低于无障碍 AA 的 4.5:1；箱体只有 44px、图标只有 17px 时，肉眼看到的就是
   "中空、发虚"的小图标（这是全站 26 处金色小图标的统一问题，不是缺字形）。
   换成 --navy 后对比度 13.8:1，图标立刻变实，金色调不受影响；
   悬停态（卡片变深蓝底、图标转金色）仍由 .card:hover 那条规则接管，6.93:1 同样达标。 */
.icon-gold { background: rgba(201, 169, 106, .22); color: var(--navy); }
.icon-navy { background: var(--navy); color: var(--gold); }
.icon-round { border-radius: 50%; }

/* 服务卡片 */
.grid-service { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-service-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.card-service { display: flex; flex-direction: column; }
.card-service .card-head { display: flex; align-items: center; gap: 14px; }
.card-service h3 { font-size: 17px; }
.card-service .card-body { flex: 1; }
.card-service .card-foot { margin-top: 18px; padding-top: 16px; border-top: 1px dashed var(--line); }

/* 关键词胶囊 */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.chips span, .chips a {
  padding: 5px 12px; border-radius: var(--radius-pill);
  background: var(--bg-soft); border: 1px solid var(--line);
  font-size: 12.5px; color: var(--text-soft);
}
.chips a:hover { border-color: var(--gold); color: var(--navy); background: rgba(201, 169, 106, .1); }

/* 要点清单 */
.ticks { margin-top: 14px; }
.ticks li { position: relative; padding-left: 24px; font-size: 13.5px; line-height: 1.9; color: var(--text-soft); }
.ticks li + li { margin-top: 7px; }
.ticks li::before {
  content: "\f00c"; font-family: "Font Awesome 6 Free"; font-weight: 900;
  position: absolute; left: 2px; top: 1px; font-size: 11px; color: var(--gold-600);
}
.ticks-light li { color: var(--text-light); }

/* 高亮强调卡片 */
.card-hl {
  background: linear-gradient(160deg, var(--navy-500), var(--navy));
  border-color: transparent; color: var(--text-light);
}
.card-hl h3, .card-hl .card-title-md { color: #fff; }
.card-hl p, .card-hl .card-note { color: var(--text-light); }
.card-hl .icon-box { background: rgba(201, 169, 106, .18); color: var(--gold); }
.card-hl .card-foot { border-top-color: rgba(255, 255, 255, .16); }

/* 数据统计卡 */
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; grid-auto-rows: 1fr; }
.metric {
  display: flex; flex-direction: column; justify-content: center;
  padding: 28px 22px; text-align: center;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow);
}
.metric-num { font-size: 38px; font-weight: 700; color: var(--navy); line-height: 1.15; font-variant-numeric: tabular-nums; }
.metric-num sub { font-size: 16px; font-weight: 700; color: var(--gold-ink); margin-left: 2px; bottom: 0; }
.metric-label { margin-top: 8px; font-size: 14px; color: var(--text); font-weight: 600; }
/* 深色高亮卡（.card-hl）里也会放统计块。数字本身被 `.card-hl p` 的亮色接管，
   但单位 sub 不受影响，仍是给浅底用的 --gold-ink，落在深色卡上只有 2.31:1，几乎看不见。
   这里把单位改回亮金：--gold-400 对 #1B3A5C 约 8.8:1。 */
.card-hl .metric-num sub { color: var(--gold-400); }
.metric-hint { margin-top: 5px; font-size: 12.5px; color: var(--text-mute); }
.section-navy .metric { background: rgba(255, 255, 255, .05); border-color: rgba(255, 255, 255, .14); box-shadow: none; }
.section-navy .metric-num { color: var(--gold); }
.section-navy .metric-num sub { color: var(--gold-400); }
.section-navy .metric-label { color: #fff; }
.section-navy .metric-hint { color: var(--text-light-dim); }

/* 优势条目 */
.edge {
  display: flex; gap: 16px; padding: 22px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  transition: transform .3s ease, box-shadow .3s ease;
}
.edge:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.edge-body h3, .edge h3 { font-size: 16px; }
.edge-body p, .edge p { margin-top: 7px; font-size: 13.5px; line-height: 1.85; color: var(--text-soft); }
.edge-idx {
  font-size: 13px; font-weight: 700; color: var(--gold-ink);
  letter-spacing: 1px; font-variant-numeric: tabular-nums;
}

/* --------------------------------------------------------------------------
   10. 流程 / 步骤 / 时间轴
   -------------------------------------------------------------------------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.steps-5 { grid-template-columns: repeat(5, 1fr); }
.steps-6 { grid-template-columns: repeat(6, 1fr); }
.step { position: relative; padding: 26px 22px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); }
.step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 11px;
  background: linear-gradient(140deg, var(--navy-500), var(--navy)); color: var(--gold);
  font-size: 15px; font-weight: 700; font-variant-numeric: tabular-nums;
}
.step h3 { margin-top: 16px; font-size: 16px; }
.step p { margin-top: 9px; font-size: 13.5px; line-height: 1.85; color: var(--text-soft); }
.step-meta { margin-top: 13px; padding-top: 12px; border-top: 1px dashed var(--line); font-size: 12.5px; color: var(--text-mute); }
.step-meta b { color: var(--navy); font-weight: 600; }
.step::after {
  content: "\f061"; font-family: "Font Awesome 6 Free"; font-weight: 900;
  position: absolute; top: 42px; right: -18px;
  font-size: 13px; color: rgba(201, 169, 106, .75);
}
.step:last-child::after { display: none; }
.steps-6 .step::after { right: -16px; }

/* 时间轴 */
.timeline { position: relative; padding-left: 30px; }
.timeline::before {
  content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(201, 169, 106, .22));
}
.timeline li { position: relative; padding-bottom: 30px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: ""; position: absolute; left: -30px; top: 7px;
  width: 16px; height: 16px; border-radius: 50%;
  background: #fff; border: 3px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(201, 169, 106, .16);
}
.tl-year { font-size: 15px; font-weight: 700; color: var(--gold-ink); font-variant-numeric: tabular-nums; letter-spacing: .6px; }
.tl-title { margin-top: 4px; font-size: 16px; font-weight: 700; color: var(--navy); }
.tl-desc { margin-top: 6px; font-size: 13.5px; line-height: 1.85; color: var(--text-soft); }

/* 横向链路（箭头串） */
.chain-list { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.chain-list li {
  position: relative;
  padding: 9px 16px; border-radius: var(--radius-pill);
  background: #fff; border: 1px solid var(--line);
  font-size: 12.5px; font-weight: 600; color: var(--navy); white-space: nowrap;
}
.chain-list li + li::before {
  content: "\2192"; position: absolute; left: -16px; top: 50%;
  transform: translateY(-50%); color: var(--gold-600); font-size: 12px;
}
.section-navy .chain-list li { background: rgba(255, 255, 255, .07); border-color: rgba(255, 255, 255, .16); color: #fff; }
.section-navy .chain-list li + li::before { color: var(--gold); }

/* --------------------------------------------------------------------------
   11. 标签页 / 手风琴
   -------------------------------------------------------------------------- */
.tabs { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.tab-btn {
  padding: 10px 20px; border-radius: var(--radius-pill);
  background: #fff; border: 1px solid var(--line);
  font-size: 14px; font-weight: 500; color: var(--text-soft);
  transition: all .25s ease;
}
.tab-btn:hover { border-color: var(--navy-400); color: var(--navy); }
.tab-btn.is-active { background: var(--navy); border-color: var(--navy); color: #fff; font-weight: 600; box-shadow: 0 8px 22px rgba(10, 37, 64, .2); }
.tab-panels { margin-top: 34px; }
.tab-panel { display: none; }
.tab-panel.is-active { display: block; animation: fadeUp .5s ease both; }

/* 手风琴 */
.accordion { border-top: 1px solid var(--line); }
.acc-item { border-bottom: 1px solid var(--line); }
.acc-q {
  width: 100%; display: flex; align-items: center; gap: 14px;
  padding: 20px 4px; background: none; border: 0; text-align: left;
  font-size: 15.5px; font-weight: 600; color: var(--navy);
}
.acc-q .acc-idx { font-size: 13px; color: var(--gold-ink); font-variant-numeric: tabular-nums; font-weight: 700; }
.acc-q .acc-icon {
  margin-left: auto; flex-shrink: 0;
  width: 26px; height: 26px; display: grid; place-items: center;
  border-radius: 50%; border: 1px solid var(--line); color: var(--navy-400); font-size: 11px;
  transition: transform .3s ease, background-color .3s ease, color .3s ease, border-color .3s ease;
}
.acc-q[aria-expanded="true"] .acc-icon { transform: rotate(180deg); background: var(--navy); border-color: var(--navy); color: var(--gold); }
.acc-a {
  max-height: 0; overflow: hidden;
  transition: max-height .35s ease;
}
.acc-a-inner { padding: 0 4px 22px 32px; font-size: 14px; line-height: 1.92; color: var(--text-soft); }
.acc-a-inner p + p { margin-top: 12px; }

/* --------------------------------------------------------------------------
   12. 表格
   -------------------------------------------------------------------------- */
.table-wrap { width: 100%; max-width: 100%; min-width: 0; overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; }
table.tbl { width: 100%; border-collapse: collapse; min-width: 620px; }
table.tbl th, table.tbl td { padding: 15px 18px; text-align: left; font-size: 14px; vertical-align: top; }
table.tbl thead th {
  background: var(--navy); color: #fff; font-weight: 600; font-size: 14px;
  white-space: nowrap; letter-spacing: .3px;
}
table.tbl tbody tr + tr { border-top: 1px solid var(--line); }
table.tbl tbody tr:nth-child(even) { background: var(--bg-soft); }
table.tbl tbody th { font-weight: 600; color: var(--navy); white-space: nowrap; }
table.tbl td { color: var(--text-soft); }
table.tbl td strong { color: var(--navy); }
.tbl-tight th, .tbl-tight td { padding: 12px 15px; font-size: 13.5px; }

/* --------------------------------------------------------------------------
   13. 表单
   -------------------------------------------------------------------------- */
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.form-field { display: flex; flex-direction: column; gap: 7px; }
.form-field-full { grid-column: 1 / -1; }
.form-label { font-size: 13.5px; font-weight: 600; color: var(--navy); }
.form-label .req { color: #C0392B; margin-left: 3px; }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 12px 15px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-soft); color: var(--text); font-size: 14.5px; line-height: 1.6;
  transition: border-color .25s ease, background-color .25s ease, box-shadow .25s ease;
}
.form-textarea { min-height: 132px; resize: vertical; }
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none; background: #fff; border-color: var(--navy-400);
  box-shadow: 0 0 0 3px rgba(44, 84, 128, .12);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-mute); }
.form-error { display: none; font-size: 12.5px; color: #C0392B; }
.form-field.has-error .form-input,
.form-field.has-error .form-select,
.form-field.has-error .form-textarea { border-color: #C0392B; background: rgba(192, 57, 43, .04); }
.form-field.has-error .form-error { display: block; }
.form-consent { display: flex; align-items: flex-start; gap: 9px; font-size: 12.5px; color: var(--text-mute); line-height: 1.7; }
.form-consent input { margin-top: 4px; accent-color: var(--navy); }
.form-alert {
  display: none; align-items: flex-start; gap: 11px;
  padding: 14px 17px; border-radius: var(--radius); font-size: 14px;
}
.form-alert.is-ok { display: flex; background: rgba(39, 174, 96, .08); border: 1px solid rgba(39, 174, 96, .34); color: #1E7B4B; }
.form-alert.is-err { display: flex; background: rgba(192, 57, 43, .06); border: 1px solid rgba(192, 57, 43, .3); color: #A93226; }
.form-hint { font-size: 12.5px; color: var(--text-mute); }

/* 自查清单（可交互） */
.check-card { padding: 26px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.check-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 11px; margin-top: 20px; }
.check-list label {
  display: flex; align-items: flex-start; gap: 11px;
  padding: 13px 15px; border-radius: var(--radius);
  background: var(--bg-soft); border: 1px solid transparent;
  font-size: 13.5px; line-height: 1.7; color: var(--text-soft); cursor: pointer;
  transition: border-color .25s ease, background-color .25s ease;
}
.check-list label:hover { border-color: rgba(201, 169, 106, .6); }
.check-list input { margin-top: 5px; accent-color: var(--navy); flex-shrink: 0; }
.check-list label.is-on { background: rgba(201, 169, 106, .12); border-color: rgba(201, 169, 106, .55); color: var(--navy); }
.check-result {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  margin-top: 22px; padding-top: 20px; border-top: 1px dashed var(--line);
}
.check-score { font-size: 30px; font-weight: 700; color: var(--navy); font-variant-numeric: tabular-nums; }
.check-score sub { font-size: 14px; color: var(--text-mute); bottom: 0; }
.check-verdict { flex: 1; min-width: 220px; font-size: 14px; color: var(--text-soft); }

/* --------------------------------------------------------------------------
   14. 案例
   -------------------------------------------------------------------------- */
.case-card { display: flex; flex-direction: column; overflow: hidden; padding: 0; }
.case-visual {
  position: relative; height: 168px;
  display: flex; align-items: flex-end; padding: 20px;
  background: linear-gradient(145deg, var(--navy-500), var(--navy));
  overflow: hidden;
}
.case-visual::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .07) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .07) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(420px 220px at 78% 12%, #000, transparent 76%);
  -webkit-mask-image: radial-gradient(420px 220px at 78% 12%, #000, transparent 76%);
}
/* 案例场景配图：由 tools/make_illus.py 生成，替换原先右上角那枚放大的字体图标 */
.case-fig {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; object-position: center;
}
.case-badge {
  position: relative; z-index: 2;
  padding: 6px 13px; border-radius: var(--radius-pill);
  background: rgba(201, 169, 106, .18); border: 1px solid rgba(201, 169, 106, .48);
  font-size: 12.5px; color: var(--gold-400); font-weight: 600;
}
.case-body { flex: 1; padding: 24px; }
.case-body h3 { font-size: 17px; }
.case-meta { margin-top: 6px; font-size: 12.5px; color: var(--text-mute); }
.case-block { margin-top: 15px; }
.case-block b { display: block; font-size: 12.5px; font-weight: 700; color: var(--gold-ink); letter-spacing: .6px; margin-bottom: 5px; }
.case-block p { margin: 0; font-size: 13.5px; line-height: 1.82; color: var(--text-soft); }
.case-result {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-top: 18px; padding-top: 16px; border-top: 1px dashed var(--line);
}
.case-result span {
  padding: 6px 12px; border-radius: var(--radius-pill);
  background: rgba(201, 169, 106, .13); color: var(--navy);
  font-size: 12.5px; font-weight: 600;
}
.case-result span b { color: var(--gold-ink); }

/* 筛选按钮组 */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* --------------------------------------------------------------------------
   15. CTA 区块
   -------------------------------------------------------------------------- */
.cta-band {
  position: relative; overflow: hidden;
  padding: 76px 0;
  background: radial-gradient(760px 400px at 82% -10%, #1B3A5C, transparent 66%),
              linear-gradient(150deg, #0A2540, #123253 60%, #0A2540);
  color: #fff;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(700px 380px at 50% 40%, #000, transparent 74%);
  -webkit-mask-image: radial-gradient(700px 380px at 50% 40%, #000, transparent 74%);
}
.cta-band .container { position: relative; z-index: 2; }
/* 右侧「渠道分流」卡片（.cta-side）已移除 —— 它原先每页写一套不同的步骤/流程文案，
   10 个页面就要维护 10 套，且与其他区块重复。现在只保留左侧的标题 + 两个按钮。
   单栏后限制行宽到 680px（≈原来的左栏宽度），避免正文在整行下拉得过长。 */
.cta-inner { display: grid; grid-template-columns: minmax(0, 680px); gap: 0; align-items: center; }
.cta-band h2 { font-size: 34px; color: #fff; }
.cta-band p { margin-top: 16px; font-size: 15.5px; line-height: 1.92; color: var(--text-light); }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }

/* --------------------------------------------------------------------------
   16. 联系方式与区位图
   -------------------------------------------------------------------------- */
.contact-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 36px; align-items: start; }
.contact-list { display: grid; gap: 16px; }
.contact-item { display: flex; gap: 15px; padding: 20px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); }
.contact-item .icon-box { flex-shrink: 0; }
.contact-item b { display: block; font-size: 12.5px; letter-spacing: 1.2px; color: var(--gold-ink); font-weight: 600; }
.contact-item .contact-big, .card .contact-item .contact-big { display: block; margin-top: 5px; font-size: 20px; font-weight: 700; color: var(--navy); letter-spacing: .2px; }
.contact-item p { margin-top: 5px; font-size: 13px; color: var(--text-soft); }
.contact-item a.contact-big:hover { color: var(--gold-600); }

/* 原「地址卡」(.map-card / .loc-card / .loc-*) 已移除 —— 它复述的办公地址、服务热线、
   到访接待时间、邮箱、二维码，与上方「联系方式」区块和页脚完全重复。
   现在该区域只保留「到访指引」(.visit-grid / .visit-item)，排成一行两栏。 */

/* 地图：使用集团已出图、带审图号的百度地图成品图（本地文件，断网/内网也能看）。
   不做交互地图是有意的 —— 交互地图都要带 AK，而地图影像属受测绘管理的内容，
   必须由合规服务商（腾讯/高德/百度/天地图）出图并保留版权与审图号。
   容器用 aspect-ratio 锁比例，切换桌面图/手机方图时不会跳版。 */
.map-embed { border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; background: #fff; }
.map-canvas { position: relative; }
.map-fig {
  display: block; width: 100%; height: auto;
  aspect-ratio: 2400 / 960; object-fit: cover; background: #EEF3F9;
}
.map-badge {
  position: absolute; left: 16px; top: 16px; z-index: 2;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 13px; border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .95); color: var(--navy);
  font-size: 12.5px; font-weight: 700; line-height: 1;
  box-shadow: 0 4px 14px rgba(10, 37, 64, .16);
}
.map-badge i { color: var(--gold-600); }
.map-open {
  position: absolute; right: 16px; top: 16px; z-index: 2;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 14px; border-radius: var(--radius-pill);
  background: rgba(10, 37, 64, .95); color: #fff;
  font-size: 12.5px; font-weight: 600; line-height: 1;
  box-shadow: 0 6px 18px rgba(10, 37, 64, .24);
  transition: background-color .25s ease;
}
.map-open:hover { background: var(--navy-600); color: #fff; }
.map-credit {
  padding: 9px 16px; border-top: 1px solid var(--line); background: var(--bg-soft);
  font-size: 12px; line-height: 1.6; color: var(--text-mute);
}
@media (max-width: 639px) {
  .map-fig { aspect-ratio: 1 / 1; }
  .map-badge, .map-open { top: 12px; padding: 6px 11px; font-size: 12px; }
  .map-badge { left: 12px; }
  .map-open { right: 12px; }
}

.map-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 14px; }
.map-actions-tip { flex: 1 1 260px; min-width: 0; font-size: 12px; line-height: 1.65; color: var(--text-mute); }

/* 原地址卡 .loc-card / .loc-badge / .loc-addr / .loc-meta / .loc-qr 已随该卡片一并移除 */

/* 二维码卡底部的按钮行 */
.qr-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: 14px; }

/* 二维码卡 */
.qr-card { display: flex; gap: 18px; align-items: center; padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); }
.qr-card .qr-box { width: 118px; height: 118px; border: 1px solid var(--line); }
.qr-title, .card h3.qr-title { font-size: 16px; }
.qr-note, .card p.qr-note { margin-top: 8px; font-size: 13.4px; line-height: 1.8; color: var(--text-soft); }
.qr-tel, .card p.qr-tel { margin-top: 10px; font-size: 16px; font-weight: 700; color: var(--navy); font-variant-numeric: tabular-nums; }
.qr-tel a:hover { color: var(--gold-ink); }

/* 同城服务 / 到访指引 */
/* 到访指引：4 张卡（提前预约 / 到达后怎么走 / 到访须知 / 远程也能沟通）→ 2×2 排布。
   注意：卡片数量是 4，这里列数必须是 2 或 4，**不要改成 3** —— 3 列会让第 4 张单独掉到
   第二行左侧、留下一块突兀的空白。增删卡片时同步调整这里的列数与断点。 */
.visit-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.visit-item { padding: 20px; background: var(--bg-soft); border-radius: var(--radius-lg); border: 1px solid var(--line); }
.visit-item b { display: block; font-size: 14.5px; color: var(--navy); font-weight: 700; }
.visit-item p { margin-top: 8px; font-size: 13.5px; line-height: 1.8; color: var(--text-soft); }

/* --------------------------------------------------------------------------
   17. 滚动动效
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0; transform: translateY(26px);
  transition: opacity .7s cubic-bezier(.22, .61, .36, 1), transform .7s cubic-bezier(.22, .61, .36, 1);
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .09s; }
.reveal-d2 { transition-delay: .18s; }
.reveal-d3 { transition-delay: .27s; }
.reveal-d4 { transition-delay: .36s; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* 动画兜底：脚本超时未触发时强制可见 */
.no-anim { opacity: 1 !important; transform: none !important; transition: none !important; animation: none !important; }

/* 无障碍：用户偏好减少动效时全部直接可见 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .reveal.is-in { opacity: 1 !important; transform: none !important; transition: none !important; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

/* --------------------------------------------------------------------------
   18. 响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1180px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-col:last-child { grid-column: 1 / -1; }
  .footer-cinfo { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .footer-cinfo li + li { margin-top: 0; }
  .grid-service, .grid-service-4 { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 1024px) {
  h1 { font-size: 38px; }
  .hero { padding: 132px 0 78px; }
  .hero h1 { font-size: 42px; }
  .hero-grid { grid-template-columns: 1fr; gap: 42px; }
  .hero-panel { max-width: 560px; }
  .page-banner { padding: 128px 0 56px; }
  .page-banner h1 { font-size: 36px; }
  .section { padding: 68px 0; }
  .section-title { font-size: 28px; }
  .cta-inner { grid-template-columns: 1fr; gap: 32px; }
  .cta-band h2 { font-size: 29px; }
  .contact-grid { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  /* 步骤卡中屏补一档，避免 4 列挤成 8 字一行 */
  .steps { grid-template-columns: repeat(2, 1fr); }
  .steps-5, .steps-6 { grid-template-columns: repeat(3, 1fr); }
  .step::after { display: none; }
  .visit-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .nav-menu { display: none; }
  .nav-toggle { display: flex; }
  .topbar-links .topbar-sep { display: none; }
  .hide-mobile { display: none; }
}

@media (max-width: 768px) {
  body { font-size: 14.5px; }
  h1 { font-size: 30px; }
  h2 { font-size: 24px; }
  .container { padding: 0 18px; }
  .topbar { display: none; }
  .site-header.is-scrolled .navbar { box-shadow: 0 6px 20px rgba(10, 37, 64, .12); }
  .hero { padding: 108px 0 62px; }
  .hero h1 { font-size: 31px; line-height: 1.26; }
  .hero-sub { font-size: 15px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 22px 0; margin-top: 44px; }
  .hero-stats li:nth-child(3) { border-left: 0; }
  .hero-stats li:nth-child(n+3) { padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, .13); }
  .hero-stat-num { font-size: 27px; }
  .page-banner { padding: 104px 0 48px; }
  .page-banner h1 { font-size: 27px; }
  .banner-sub { font-size: 14.5px; }
  .section { padding: 54px 0; }
  .section-title { font-size: 23px; }
  .section-sub { font-size: 14.5px; }
  .grid-2, .grid-3, .grid-4, .grid-service, .grid-service-4, .case-grid { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .metric { padding: 20px 14px; }
  .metric-num { font-size: 28px; }
  .metric-label { font-size: 13px; }
  .metric-hint { font-size: 11.5px; }
  .steps, .steps-5, .steps-6 { grid-template-columns: 1fr; }
  .check-list { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-main { padding: 44px 0 32px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-cinfo { grid-template-columns: 1fr; }
  .footer-bar-inner { flex-direction: column; align-items: flex-start; }
  .acc-a-inner { padding-left: 4px; }
  .tabs { justify-content: flex-start; }
  .float-dock { right: 12px; bottom: 16px; gap: 8px; }
  .float-btn { width: 44px; height: 44px; font-size: 17px; }
  .float-tip { display: none; }
  /* 二维码浮层改到按钮左侧上方，避免超出屏幕 */
  .qr-pop { bottom: 0; }
  .qr-card { flex-direction: column; text-align: center; }
  .case-visual { height: 148px; }
}

@media (max-width: 480px) {
  .hero-badge { font-size: 12px; padding: 6px 13px 6px 8px; }
  .hero-cta .btn { flex: 1 1 100%; }
  .hero-tags span { font-size: 12px; padding: 5px 11px; }
  .section { padding: 46px 0; }
  .card { padding: 20px; }
  .step { padding: 20px 18px; }
  .qr-pop { width: 118px; padding: 10px; }
  .qr-pop-img { width: 98px; height: 98px; }
  .timeline { padding-left: 26px; }
}

/* 打印：去掉装饰与固定元素 */
@media print {
  .site-header, .float-dock, .drawer, .drawer-mask, .hero::before, .page-banner::before { display: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
  body { color: #000; }
}