/* ==========================================================
   XX物联 · RFID 智能管理系统 官网
   全站样式表 v1.0  —— 纯静态，无构建依赖
   替换占位内容请全局搜索：【占位】
   ========================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --ink: #0d1b2a;
  --ink-2: #1c2f47;
  --muted: #5b6b7f;
  --muted-2: #8494a8;
  --line: #e4eaf2;
  --line-2: #eef3f9;
  --bg: #ffffff;
  --bg-soft: #f5f8fc;
  --bg-deep: #0b1a2c;
  --brand: #0a63c4;
  --brand-dark: #064e9e;
  --brand-soft: #e8f1fd;
  --cyan: #00a6c0;
  --cyan-soft: #e4f7fa;
  --grad: linear-gradient(135deg, #0a63c4 0%, #00a6c0 100%);
  --grad-soft: linear-gradient(135deg, #e8f1fd 0%, #e4f7fa 100%);
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 10px rgba(13, 27, 42, .06);
  --shadow: 0 10px 30px rgba(13, 27, 42, .09);
  --shadow-lg: 0 24px 60px rgba(10, 99, 196, .16);
  --header-h: 72px;
  --maxw: 1240px;
  --ease: cubic-bezier(.22, .68, .35, 1);
}

/* ---------- 2. 基础重置 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s var(--ease); }
ul, ol { list-style: none; }
button, input, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4 { font-weight: 700; line-height: 1.3; letter-spacing: -.01em; }
::selection { background: var(--brand); color: #fff; }

/* ---------- 3. 布局工具 ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 900px; }
.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }
.section-soft { background: var(--bg-soft); }
.section-deep { background: var(--bg-deep); color: #fff; }
.grid { display: grid; gap: 28px; }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }
.g-6 { grid-template-columns: repeat(6, 1fr); }
.flex { display: flex; }
.between { justify-content: space-between; }
.center { justify-content: center; }
.items-center { align-items: center; }
.wrap { flex-wrap: wrap; }
.gap-8 { gap: 8px; } .gap-12 { gap: 12px; } .gap-16 { gap: 16px; } .gap-24 { gap: 24px; } .gap-32 { gap: 32px; }
.mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; } .mt-32 { margin-top: 32px; } .mt-48 { margin-top: 48px; }
.mb-8 { margin-bottom: 8px; } .mb-16 { margin-bottom: 16px; } .mb-24 { margin-bottom: 24px; } .mb-32 { margin-bottom: 32px; }
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* ---------- 4. 文字组件 ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  color: var(--brand);
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--brand); border-radius: 2px; }
.eyebrow-en { font-size: 12px; letter-spacing: .28em; color: var(--muted-2); text-transform: uppercase; font-weight: 600; }
.h1 { font-size: clamp(34px, 4.6vw, 58px); }
.h2 { font-size: clamp(28px, 3.4vw, 42px); }
.h3 { font-size: clamp(20px, 2vw, 24px); }
.lead { font-size: 18px; color: var(--muted); line-height: 1.85; }
.small { font-size: 14px; color: var(--muted); }
.section-head { max-width: 760px; margin-bottom: 56px; }
.section-head.center { margin-left: auto; margin-right: auto; }
.section-head p { margin-top: 16px; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 28px; border-radius: 999px; border: 1px solid transparent;
  font-size: 15px; font-weight: 600; cursor: pointer; white-space: nowrap;
  transition: all .25s var(--ease);
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 8px 22px rgba(10, 99, 196, .28); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(10, 99, 196, .36); }
.btn-outline { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-outline:hover { border-color: var(--brand); color: var(--brand); transform: translateY(-2px); }
.btn-ghost { border-color: rgba(255, 255, 255, .35); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, .12); }
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn .arrow { transition: transform .25s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- 6. 顶部导航 ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100; height: var(--header-h);
  background: rgba(255, 255, 255, .82); backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent; transition: all .3s var(--ease);
}
.site-header.scrolled { background: #fff; border-bottom-color: var(--line); box-shadow: var(--shadow-sm); }
.header-inner { height: var(--header-h); display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo-mark { width: 38px; height: 38px; border-radius: 11px; background: var(--grad); display: grid; place-items: center; box-shadow: 0 6px 16px rgba(10, 99, 196, .3); }
.logo-text strong { display: block; font-size: 17px; letter-spacing: .01em; }
.logo-text em { display: block; font-style: normal; font-size: 11px; color: var(--muted); letter-spacing: .06em; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav > a, .nav-item > a {
  display: inline-flex; align-items: center; gap: 5px; padding: 9px 15px; border-radius: 9px;
  font-size: 15px; font-weight: 500; color: var(--ink-2); position: relative;
}
.nav > a:hover, .nav-item > a:hover { color: var(--brand); background: var(--brand-soft); }
.nav > a.active, .nav-item > a.active { color: var(--brand); }
.nav > a.active::after {
  content: ""; position: absolute; left: 15px; right: 15px; bottom: 2px; height: 2px;
  background: var(--brand); border-radius: 2px;
}
.nav-item { position: relative; }
.nav-item .caret { width: 12px; height: 12px; transition: transform .25s var(--ease); }
.nav-item:hover .caret { transform: rotate(180deg); }
.sub-menu {
  position: absolute; top: 100%; left: 50%; transform: translate(-50%, 8px);
  min-width: 190px; padding: 8px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  opacity: 0; visibility: hidden; transition: all .25s var(--ease);
}
.nav-item:hover .sub-menu { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.sub-menu a { display: block; padding: 10px 14px; border-radius: 8px; font-size: 14.5px; color: var(--ink-2); }
.sub-menu a:hover { background: var(--brand-soft); color: var(--brand); }
.nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 10px; background: #fff; cursor: pointer; padding: 11px; }
.nav-toggle span { display: block; height: 2px; background: var(--ink); border-radius: 2px; transition: all .25s var(--ease); }
.nav-toggle span + span { margin-top: 5px; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 7. 首屏 Hero ---------- */
.hero {
  position: relative; padding: calc(var(--header-h) + 88px) 0 96px; overflow: hidden;
  background:
    radial-gradient(900px 480px at 82% 8%, rgba(0, 166, 192, .13), transparent 62%),
    radial-gradient(760px 420px at 8% 92%, rgba(10, 99, 196, .12), transparent 60%),
    var(--bg-soft);
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 62px 62px;
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 78%);
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 78%);
}
.hero .container { position: relative; z-index: 2; }
.hero-grid { display: grid; grid-template-columns: 1.06fr .94fr; gap: 56px; align-items: center; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 10px; padding: 6px 16px 6px 6px;
  background: #fff; border: 1px solid var(--line); border-radius: 999px;
  font-size: 13.5px; color: var(--ink-2); box-shadow: var(--shadow-sm); margin-bottom: 26px;
}
.hero-tag b { background: var(--grad-soft); color: var(--brand-dark); padding: 3px 11px; border-radius: 999px; font-size: 12.5px; }
.hero h1 { margin-bottom: 20px; }
.hero .lead { max-width: 560px; }
.hero-actions { display: flex; gap: 14px; margin-top: 36px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 40px; margin-top: 52px; padding-top: 32px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.hero-stats .num { font-size: 32px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; line-height: 1.1; }
.hero-stats .lbl { font-size: 13.5px; color: var(--muted); }

/* 标签卡片视觉 */
.hero-visual { position: relative; }
.tag-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 26px; box-shadow: var(--shadow-lg);
}
.tag-card-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px dashed var(--line); }
.tag-card-head span { font-size: 13px; color: var(--muted); }
.chip { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; color: #0a8a5f; background: #e6f7ef; padding: 4px 11px; border-radius: 999px; }
.chip i { width: 6px; height: 6px; border-radius: 50%; background: #16b37a; display: block; animation: pulse 1.8s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }
.rfid-svg { width: 100%; height: 210px; margin: 18px 0; }
.kv-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 18px; }
.kv { background: var(--bg-soft); border-radius: 10px; padding: 12px 14px; }
.kv dt { font-size: 12px; color: var(--muted); }
.kv dd { font-size: 14.5px; font-weight: 600; margin-top: 2px; }
.float-card {
  position: absolute; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px 18px; box-shadow: var(--shadow); font-size: 13px;
}
.float-card.a { top: -20px; right: -14px; }
.float-card.b { bottom: -22px; left: -18px; }
.float-card b { display: block; font-size: 19px; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.float-card span { color: var(--muted); font-size: 12.5px; }

/* ---------- 8. 卡片 ---------- */
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 34px; transition: all .3s var(--ease); position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-6px); border-color: transparent; box-shadow: var(--shadow-lg); }
.card-icon {
  width: 54px; height: 54px; border-radius: 15px; display: grid; place-items: center;
  background: var(--grad-soft); margin-bottom: 22px;
}
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }
.card .more { display: inline-flex; align-items: center; gap: 6px; margin-top: 18px; font-size: 14.5px; font-weight: 600; color: var(--brand); }
.card .more svg { transition: transform .25s var(--ease); }
.card:hover .more svg { transform: translateX(5px); }
.card-index { position: absolute; top: 18px; right: 24px; font-size: 46px; font-weight: 800; color: var(--line-2); letter-spacing: -.04em; }

.card-dark { background: rgba(255, 255, 255, .05); border-color: rgba(255, 255, 255, .12); color: #fff; }
.card-dark p { color: rgba(255, 255, 255, .66); }
.card-dark:hover { background: rgba(255, 255, 255, .09); box-shadow: 0 24px 60px rgba(0, 0, 0, .3); }
.card-dark .card-icon { background: rgba(255, 255, 255, .1); }

/* ---------- 9. 流程步骤 ---------- */
.steps { display: grid; gap: 20px; grid-template-columns: repeat(4, 1fr); counter-reset: s; position: relative; }
.steps::before {
  content: ""; position: absolute; top: 34px; left: 8%; right: 8%; height: 2px;
  background: repeating-linear-gradient(90deg, var(--line) 0 8px, transparent 8px 16px); z-index: 0;
}
.step { position: relative; z-index: 1; text-align: center; }
.step-dot {
  width: 68px; height: 68px; margin: 0 auto 18px; border-radius: 50%; background: #fff;
  border: 2px solid var(--brand-soft); display: grid; place-items: center;
  font-size: 22px; font-weight: 800; color: var(--brand); box-shadow: var(--shadow-sm);
  transition: all .3s var(--ease);
}
.step:hover .step-dot { background: var(--grad); color: #fff; border-color: transparent; transform: scale(1.06); }
.step h4 { font-size: 17px; margin-bottom: 6px; }
.step p { font-size: 13.5px; color: var(--muted); }

.steps-6 { grid-template-columns: repeat(6, 1fr); }
.steps-6 .step-dot { width: 58px; height: 58px; font-size: 18px; }

/* ---------- 10. 数据条 / 指标 ---------- */
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; background: #fff; }
.metric { padding: 34px 26px; text-align: center; border-right: 1px solid var(--line); }
.metric:last-child { border-right: 0; }
.metric b { display: block; font-size: 34px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; line-height: 1.1; }
.metric span { font-size: 13.5px; color: var(--muted); }

.metrics-dark { border-color: rgba(255, 255, 255, .14); background: rgba(255, 255, 255, .04); }
.metrics-dark .metric { border-right-color: rgba(255, 255, 255, .14); color: #fff; }
.metrics-dark .metric b { background: none; -webkit-text-fill-color: #fff; color: #fff; }
.metrics-dark .metric span { color: rgba(255, 255, 255, .6); }

/* ---------- 11. 图表条 ---------- */
.bars { display: grid; gap: 16px; }
.bar-row { display: grid; grid-template-columns: 108px 1fr 54px; align-items: center; gap: 16px; font-size: 14px; }
.bar-track { height: 12px; background: var(--line-2); border-radius: 999px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 999px; background: var(--grad); width: 0; transition: width 1.2s var(--ease); }
.bar-row .val { text-align: right; font-weight: 700; }

/* ---------- 12. 特性清单 ---------- */
.check-list li { display: flex; align-items: flex-start; gap: 12px; padding: 11px 0; border-bottom: 1px dashed var(--line); font-size: 15px; }
.check-list li:last-child { border-bottom: 0; }
.check-list svg { flex-shrink: 0; margin-top: 5px; }
.check-list strong { font-weight: 600; }

/* ---------- 13. 标签页 ---------- */
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 32px; }
.tab {
  padding: 10px 22px; border-radius: 999px; border: 1px solid var(--line); background: #fff;
  font-size: 14.5px; font-weight: 600; cursor: pointer; transition: all .25s var(--ease); color: var(--ink-2);
}
.tab:hover { border-color: var(--brand); color: var(--brand); }
.tab.active { background: var(--grad); border-color: transparent; color: #fff; box-shadow: 0 8px 20px rgba(10, 99, 196, .25); }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeUp .45s var(--ease); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

/* ---------- 14. 案例 ---------- */
.case-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; transition: all .3s var(--ease); }
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.case-thumb { height: 176px; background: var(--grad-soft); display: grid; place-items: center; position: relative; overflow: hidden; }
.case-thumb::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(13, 27, 42, .05) 1px, transparent 1px), linear-gradient(90deg, rgba(13, 27, 42, .05) 1px, transparent 1px);
  background-size: 26px 26px;
}
.case-body { padding: 26px; }
.case-body .tagline { font-size: 12.5px; color: var(--brand); font-weight: 600; letter-spacing: .04em; }
.case-body h3 { font-size: 19px; margin: 8px 0 12px; }
.case-body p { font-size: 14.5px; color: var(--muted); }
.case-result { display: flex; gap: 26px; margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--line-2); }
.case-result div b { display: block; font-size: 21px; color: var(--brand-dark); }
.case-result div span { font-size: 12.5px; color: var(--muted); }

/* ---------- 15. 时间轴 ---------- */
.timeline { position: relative; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 8px; bottom: 8px; width: 2px; background: var(--line); }
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before { content: ""; position: absolute; left: -30px; top: 8px; width: 12px; height: 12px; border-radius: 50%; background: #fff; border: 3px solid var(--brand); }
.tl-year { font-size: 13px; font-weight: 700; color: var(--brand); letter-spacing: .06em; }
.tl-item h4 { font-size: 17px; margin: 4px 0 6px; }
.tl-item p { font-size: 14.5px; color: var(--muted); }

/* ---------- 16. 表单 ---------- */
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-sm); }
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.field label i { color: #e04b4b; font-style: normal; }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 16px; border: 1px solid var(--line); border-radius: 11px;
  background: var(--bg-soft); transition: all .2s var(--ease); font-size: 15px;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; background: #fff; border-color: var(--brand); box-shadow: 0 0 0 4px rgba(10, 99, 196, .1);
}
.field textarea { min-height: 118px; resize: vertical; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-note { font-size: 12.5px; color: var(--muted); margin-top: 14px; }
.form-ok {
  display: none; margin-top: 18px; padding: 14px 18px; border-radius: 11px;
  background: #e6f7ef; color: #0a7a55; font-size: 14.5px; border: 1px solid #bce8d4;
}
.form-ok.show { display: block; animation: fadeUp .4s var(--ease); }

/* ---------- 17. 联系信息块 ---------- */
.contact-box { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.contact-item { background: var(--bg-soft); border-radius: var(--radius); padding: 24px; }
.contact-item .ic { width: 42px; height: 42px; border-radius: 12px; background: var(--grad-soft); display: grid; place-items: center; margin-bottom: 14px; }
/* 标签与值同行显示，电话 / 邮箱不折行 */
.contact-item .k { display: inline; font-size: 13.5px; color: var(--muted); }
.contact-item .v { display: inline; margin-left: 10px; font-size: 16px; font-weight: 600; white-space: nowrap; }
.contact-item .s { font-size: 13px; color: var(--muted); margin-top: 6px; white-space: nowrap; }
/* 页脚与其他联系方式中的电话 / 邮箱同样不折行 */
.footer-col a[href^="tel:"],
.footer-col a[href^="mailto:"],
.kv dd a[href^="tel:"],
.kv dd a[href^="mailto:"],
.nowrap { white-space: nowrap; }
/* 键值同行显示（用于「其他联系方式」等短列表） */
.kv-inline { display: block; }
.kv-inline dt { display: inline; font-size: 13px; }
.kv-inline dd { display: inline; margin-left: 10px; font-size: 14.5px; font-weight: 600; margin-top: 0; }

/* ---------- 18. CTA 横幅 ---------- */
.cta-banner {
  border-radius: var(--radius-lg); padding: 60px 56px; background: var(--grad); color: #fff;
  display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap;
  position: relative; overflow: hidden;
}
.cta-banner::after {
  content: ""; position: absolute; right: -60px; top: -80px; width: 320px; height: 320px; border-radius: 50%;
  background: rgba(255, 255, 255, .1);
}
.cta-banner::before {
  content: ""; position: absolute; right: 120px; bottom: -140px; width: 260px; height: 260px; border-radius: 50%;
  background: rgba(255, 255, 255, .08);
}
.cta-banner > * { position: relative; z-index: 2; }
.cta-banner h2 { margin-bottom: 10px; }
.cta-banner p { color: rgba(255, 255, 255, .82); }

/* ---------- 19. 面包屑 ---------- */
.page-hero {
  padding: calc(var(--header-h) + 64px) 0 64px; position: relative; overflow: hidden;
  background: radial-gradient(700px 340px at 78% 10%, rgba(0, 166, 192, .14), transparent 60%), var(--bg-soft);
  border-bottom: 1px solid var(--line);
}
.page-hero h1 { margin: 14px 0 12px; }
.crumb { font-size: 13.5px; color: var(--muted); }
.crumb a:hover { color: var(--brand); }
.crumb span { margin: 0 8px; color: var(--muted-2); }

/* ---------- 20. 页脚 + 备案 ---------- */
.site-footer { background: var(--bg-deep); color: rgba(255, 255, 255, .72); font-size: 14.5px; }
.footer-top { padding: 68px 0 48px; display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
/* 联系方式独占一行横向排列，避免地址被挤成多行 */
.footer-col.footer-contact {
  grid-column: 1 / -1; margin-top: 4px; padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, .1);
}
.footer-contact h4 { margin-bottom: 14px; }
.footer-contact ul { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 44px; }
.footer-contact li { white-space: nowrap; padding: 0 !important; }
.footer-contact li svg { flex-shrink: 0; }
.footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.footer-logo strong { color: #fff; font-size: 17px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 18px; }
.footer-col a, .footer-col li { display: block; padding: 6px 0; color: rgba(255, 255, 255, .66); }
.footer-col a:hover { color: #fff; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-qr { display: flex; gap: 14px; align-items: center; }
.qr-box { width: 92px; height: 92px; border-radius: 12px; background: rgba(255, 255, 255, .08); border: 1px dashed rgba(255, 255, 255, .25); display: grid; place-items: center; font-size: 11px; color: rgba(255, 255, 255, .5); text-align: center; padding: 8px; }

.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding: 26px 0 34px; }
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.copyright { font-size: 13.5px; color: rgba(255, 255, 255, .55); }
.beian { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; font-size: 13.5px; }
.beian a { color: rgba(255, 255, 255, .68); display: inline-flex; align-items: center; gap: 6px; }
.beian a:hover { color: #fff; }
/* ICP 备案 */
.icp-link { display: inline-flex; align-items: center; gap: 6px; }
/* 公安联网备案：号码待申请，先用占位样式；拿到号后替换数字并保留结构与图标 */
.ga-link { display: inline-flex; align-items: center; gap: 6px; }
.ga-badge { width: 16px; height: 16px; flex-shrink: 0; opacity: .85; }
.ga-link.is-placeholder { color: rgba(255, 255, 255, .45); border: 1px dashed rgba(255, 255, 255, .28); border-radius: 6px; padding: 2px 10px; }

/* ---------- 21. 滚动动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .08s; } .reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; } .reveal-d4 { transition-delay: .32s; }

/* ---------- 22. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer-top { grid-template-columns: 1fr 1fr 1fr; }
  .g-4 { grid-template-columns: repeat(2, 1fr); }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .metric:nth-child(2) { border-right: 0; }
  .metric:nth-child(1), .metric:nth-child(2) { border-bottom: 1px solid var(--line); }
  .metrics-dark .metric:nth-child(1), .metrics-dark .metric:nth-child(2) { border-bottom-color: rgba(255, 255, 255, .14); }
}
@media (max-width: 900px) {
  .nav {
    position: fixed; top: var(--header-h); left: 0; right: 0; flex-direction: column; align-items: stretch;
    background: #fff; border-bottom: 1px solid var(--line); padding: 14px 20px 22px; gap: 2px;
    box-shadow: var(--shadow); transform: translateY(-12px); opacity: 0; visibility: hidden; transition: all .28s var(--ease);
    max-height: calc(100vh - var(--header-h)); overflow-y: auto;
  }
  .nav.open { transform: none; opacity: 1; visibility: visible; }
  .nav > a, .nav-item > a { padding: 13px 10px; font-size: 16px; }
  .nav > a.active::after { display: none; }
  .nav-item .sub-menu { position: static; transform: none; opacity: 1; visibility: visible; box-shadow: none; border: 0; padding: 0 0 0 12px; min-width: 0; background: transparent; }
  .nav-item .caret { display: none; }
  .nav-toggle { display: block; }
  .header-inner .btn { display: none; }
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero { padding-top: calc(var(--header-h) + 52px); }
  .g-2, .g-3, .g-6 { grid-template-columns: 1fr; }
  .steps, .steps-6 { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .steps::before { display: none; }
  .contact-box { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .section { padding: 66px 0; }
  .cta-banner { padding: 40px 28px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .kv-list { grid-template-columns: 1fr; }
  .float-card.a { right: 0; } .float-card.b { left: 0; }
}
@media (max-width: 640px) {
  .container { padding: 0 18px; }
  .footer-top { grid-template-columns: 1fr; }
  .steps, .steps-6 { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: 1fr; }
  .metric { border-right: 0; border-bottom: 1px solid var(--line); }
  .metrics-dark .metric { border-bottom-color: rgba(255, 255, 255, .14); }
  .hero-stats { gap: 26px; }
  .hero-stats .num { font-size: 26px; }
  .card { padding: 26px; }
  .form-card { padding: 26px; }
  .bar-row { grid-template-columns: 84px 1fr 44px; font-size: 13px; }
  .footer-bottom .container { flex-direction: column; align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}