/* ==========================================================================
   重庆威安宸数据科技有限公司 · 官网样式
   设计基调：简约大气 / 大量留白 / 细线分隔 / 橙金仅作点睛
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --ink: #1d1a18;
  --ink-2: #3a322c;
  --body: #4d4540;
  --muted: #8c8079;
  --line: #ecdccd;
  --line-2: #f4e9dc;
  --bg: #fff7ee;
  --soft: #ffe8d3;
  --soft-2: #fbe2c5;
  --panel: #fdf3e8;      /* 浮动面板底色：不透明，避免背景网格透入 */
  --panel-line: #f3e2d0; /* 面板描边 */

  --brand: #e2762b;
  --brand-2: #c79336;
  --brand-soft: #fdf4ec;
  --grad: linear-gradient(135deg, #ef8c33 0%, #cf9a3b 100%);
  --warm-grad: linear-gradient(118deg, #f4a07c 0%, #ee8b58 32%, #f0aa56 62%, #ecc473 100%);

  --radius: 14px;
  --radius-lg: 20px;
  --radius-sm: 8px;

  --shadow-sm: 0 1px 2px rgba(21, 24, 29, .04);
  --shadow: 0 1px 2px rgba(21, 24, 29, .04), 0 14px 34px -14px rgba(21, 24, 29, .14);
  --shadow-lg: 0 2px 4px rgba(21, 24, 29, .04), 0 28px 60px -24px rgba(21, 24, 29, .18);

  --max: 1200px;
  --header-h: 72px;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 2. 基础重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  position: relative;
  margin: 0;
  background: var(--warm-grad) fixed;
  color: var(--body);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "tnum" 0;
}

body::before { display: none; } /* 已移除网格背景，仅保留暖橙金渐变与柔光高光 */

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 8% 18%, rgba(255, 255, 255, .32), transparent 16%),
    radial-gradient(circle at 92% 8%, rgba(255, 255, 255, .26), transparent 14%),
    radial-gradient(circle at 22% 88%, rgba(255, 255, 255, .2), transparent 18%),
    radial-gradient(circle at 82% 92%, rgba(255, 255, 255, .16), transparent 16%);
  z-index: 0;
}

h1, h2, h3, h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: -.02em;
}

p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

a {
  color: inherit;
  text-decoration: none;
  transition: color .2s var(--ease);
}

img, svg { display: block; max-width: 100%; }

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

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

::selection { background: rgba(226, 118, 43, .16); color: var(--ink); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  padding: 12px 20px;
  background: var(--ink);
  color: #fff;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- 3. 布局 ---------- */
.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 32px;
}

.section { padding: 104px 0; position: relative; z-index: 1; }
.section--tight { padding: 72px 0; }
.section--soft {
  background: var(--panel);
}
.section--ink {
  background: linear-gradient(118deg, #2a1f17 0%, #1d1a18 100%);
  color: rgba(255, 255, 255, .72);
  position: relative;
  z-index: 2;
}
.section--ink h2,
.section--ink h3 { color: #fff; }

.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--brand);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--grad);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(27px, 3.2vw, 40px);
  margin-bottom: 18px;
  font-weight: 600;
}

.section-desc {
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--body);
}
.section--ink .section-desc { color: rgba(255, 255, 255, .66); }

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- 4. 组件 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .01em;
  cursor: pointer;
  transition: transform .2s var(--ease), background .2s var(--ease),
    border-color .2s var(--ease), color .2s var(--ease), box-shadow .2s var(--ease);
}
.btn .icon { width: 17px; height: 17px; transition: transform .25s var(--ease); }
.btn:hover .icon { transform: translateX(3px); }

.btn--primary {
  background: var(--ink);
  color: #fff;
}
.btn--primary:hover { background: #000; box-shadow: var(--shadow); }

.btn--brand {
  background: var(--grad);
  color: #fff;
}
.btn--brand:hover { box-shadow: 0 10px 26px -10px rgba(226, 118, 43, .6); }

.btn--ghost {
  background: #ffffff;
  border-color: #f1ddc8;
  color: var(--ink);
}
.btn--ghost:hover {
  border-color: var(--ink);
  background: var(--panel);
}

.btn--light {
  background: #fff;
  color: var(--ink);
}
.btn--light:hover { transform: translateY(-1px); }

.btn--sm { height: 40px; padding: 0 18px; font-size: 14px; }

.card {
  position: relative;
  background: #ffffff;
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: 0 1px 2px rgba(31, 18, 8, .04), 0 18px 38px -20px rgba(31, 18, 8, .18);
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, .9);
  box-shadow: 0 1px 2px rgba(31, 18, 8, .04), 0 26px 50px -22px rgba(31, 18, 8, .22);
}

.card--soft {
  background: var(--panel);
  border-color: var(--panel-line);
  box-shadow: 0 1px 2px rgba(31, 18, 8, .03), 0 12px 28px -18px rgba(31, 18, 8, .14);
}
.card--soft:hover { background: #ffffff; border-color: rgba(255, 255, 255, .9); }

.icon-box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 22px;
  border-radius: 11px;
  background: linear-gradient(135deg, #fff1e0, #ffe1c4);
  color: var(--brand);
  box-shadow: inset 0 0 0 1px rgba(226, 118, 43, .14);
}
.icon-box .icon { width: 22px; height: 22px; }

.icon {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 1.6;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

.card h3 { font-size: 18.5px; margin-bottom: 10px; }
.card p { font-size: 15px; line-height: 1.8; }

.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tag {
  padding: 4px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--muted);
  background: #fff;
}

.check-list li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 10px;
  font-size: 15px;
  line-height: 1.8;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--brand-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23e2762b' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center / 9px 9px no-repeat;
}
.check-list li:last-child { margin-bottom: 0; }

/* 数据表 */
.table-wrap {
  border: 1px solid var(--panel-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  box-shadow: 0 12px 30px -18px rgba(31, 18, 8, .18);
}
.table-scroll { overflow-x: auto; }
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  min-width: 620px;
}
table.data th,
table.data td {
  padding: 15px 22px;
  text-align: left;
  border-bottom: 1px solid var(--line-2);
  line-height: 1.7;
}
table.data thead th {
  background: rgba(255, 224, 200, .35);
  color: var(--ink);
  font-weight: 600;
  font-size: 13.5px;
  letter-spacing: .04em;
  white-space: nowrap;
}
table.data tbody tr:last-child td { border-bottom: 0; }
table.data tbody tr { transition: background .2s var(--ease); }
table.data tbody tr:hover { background: #fcfdfe; }
table.data td:first-child { color: var(--ink); font-weight: 500; white-space: nowrap; }

/* ---------- 5. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #ffffff;
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: rgba(255, 255, 255, .9);
  box-shadow: 0 6px 22px -10px rgba(31, 18, 8, .18);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  display: block;
  object-fit: contain;
  background: var(--grad);
  box-shadow: 0 6px 16px -8px rgba(226, 118, 43, .8);
}
.footer-brand .brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 11px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-name { color: var(--ink); font-size: 15.5px; font-weight: 600; letter-spacing: .01em; }
.brand-sub {
  color: var(--muted);
  font-size: 10.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.nav { display: flex; align-items: center; gap: 6px; }
.nav-cta { display: none; } /* 仅在移动端抽屉中显示 */
.nav-link {
  position: relative;
  padding: 8px 14px;
  border-radius: 7px;
  font-size: 14.5px;
  color: var(--ink-2);
}
.nav-link:hover { color: var(--ink); background: var(--soft); }
.nav-link.is-active { color: var(--ink); font-weight: 500; }
.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 1px;
  height: 2px;
  background: var(--grad);
  border-radius: 2px;
}

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

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: #fff;
  cursor: pointer;
  padding: 0;
  place-items: center;
}
.nav-toggle span {
  display: block;
  width: 17px;
  height: 1.5px;
  margin: 3px auto;
  background: var(--ink);
  transition: transform .25s var(--ease), opacity .2s var(--ease);
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-4.5px) rotate(-45deg); }

/* ---------- 6. 首页 Hero ---------- */
.hero {
  position: relative;
  padding: 96px 0 88px;
  overflow: hidden;
  z-index: 1;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 64px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 14px 6px 8px;
  margin-bottom: 26px;
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: 999px;
  background: #ffffff;
  font-size: 13px;
  color: var(--ink-2);
  box-shadow: 0 6px 18px -8px rgba(31, 18, 8, .18);
}
.hero-badge em {
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--grad);
  color: #fff;
  font-size: 11px;
  font-style: normal;
  letter-spacing: .06em;
}

.hero h1 {
  font-size: clamp(34px, 4.6vw, 56px);
  line-height: 1.22;
  margin-bottom: 22px;
}
.hero h1 .accent {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead {
  max-width: 540px;
  font-size: 17px;
  line-height: 1.85;
  margin-bottom: 16px;
}
.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 26px 0 34px;
  font-size: 14.5px;
  color: var(--ink-2);
}
.hero-points li { display: flex; align-items: center; gap: 8px; }
.hero-points .dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--brand);
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; }

/* 数据飞轮图形 */
.flywheel { position: relative; width: 100%; max-width: 440px; margin-left: auto; }
.flywheel svg { width: 100%; height: auto; }
.flywheel .ring-outer { transform-origin: 200px 200px; animation: spin 34s linear infinite; }
.flywheel .ring-mid { transform-origin: 200px 200px; animation: spin 52s linear infinite reverse; }
.flywheel .ring-inner { transform-origin: 200px 200px; animation: spin 22s linear infinite; }
.flywheel .node-label {
  font-size: 13px;
  font-weight: 500;
  fill: var(--ink);
}
.flywheel .node-dot { fill: #fff; stroke: var(--brand); stroke-width: 2; }
.flywheel .hub-text { fill: #fff; font-size: 17px; font-weight: 600; }
.flywheel .hub-sub { fill: rgba(255, 255, 255, .82); font-size: 8.5px; letter-spacing: .18em; }

@keyframes spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
  .flywheel .ring-outer,
  .flywheel .ring-mid,
  .flywheel .ring-inner { animation: none; }
}

/* ---------- 7. 数据条 ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, .1);
}
.stat {
  padding: 38px 32px;
  border-right: 1px solid rgba(255, 255, 255, .1);
}
.stat:last-child { border-right: 0; }
.stat-num {
  display: flex;
  align-items: baseline;
  gap: 2px;
  color: #fff;
  font-size: clamp(30px, 3.4vw, 42px);
  font-weight: 600;
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
}
.stat-num .suffix { font-size: .55em; font-weight: 500; }
.stat-label {
  margin-top: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, .55);
}

/* ---------- 8. 链路流程 ---------- */
.chain {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: var(--radius);
  overflow: hidden;
  background: #ffffff;
  box-shadow: 0 18px 40px -22px rgba(31, 18, 8, .22);
}
.chain-step {
  position: relative;
  padding: 30px 26px 32px;
  border-right: 1px solid var(--panel-line);
  transition: background .3s var(--ease);
}
.chain-step:last-child { border-right: 0; }
.chain-step:hover { background: var(--panel); }
.chain-step::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--grad);
  transition: width .35s var(--ease);
}
.chain-step:hover::after { width: 100%; }
.chain-num {
  display: block;
  margin-bottom: 14px;
  color: var(--brand);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .16em;
}
.chain-step h3 { font-size: 17px; margin-bottom: 8px; }
.chain-step p { font-size: 14px; line-height: 1.75; color: var(--body); }

/* ---------- 9. 通用图文块 ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.split--wide-left { grid-template-columns: 1.15fr .85fr; }

.quote {
  padding: 30px 34px;
  border-left: 2px solid var(--brand);
  background: #ffffff;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ink-2);
}
.quote .source {
  display: block;
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--muted);
}

/* 时间线 / 流程 */
.timeline { position: relative; padding-left: 30px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--line);
}
.timeline-item { position: relative; padding-bottom: 34px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 7px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--brand);
}
.timeline-phase {
  display: block;
  margin-bottom: 4px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--brand);
  text-transform: uppercase;
}
.timeline-item h3 { font-size: 18px; margin-bottom: 8px; }
.timeline-item p { font-size: 15px; line-height: 1.8; }

/* 价值点 */
.value-item { padding: 26px 0; border-bottom: 1px solid var(--line); }
.value-item:last-child { border-bottom: 0; }
.value-item h3 { font-size: 17px; margin-bottom: 6px; }
.value-item p { font-size: 14.5px; }

/* 案例卡 */
.case-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 30px;
  background: #ffffff;
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: var(--radius);
  box-shadow: 0 1px 2px rgba(31, 18, 8, .04), 0 18px 36px -22px rgba(31, 18, 8, .2);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.case-card:hover { transform: translateY(-3px); box-shadow: 0 1px 2px rgba(31, 18, 8, .04), 0 28px 52px -24px rgba(31, 18, 8, .26); }
.case-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--brand);
  text-transform: uppercase;
}
.case-card h3 { font-size: 18px; margin-bottom: 10px; }
.case-card > p { font-size: 14.5px; line-height: 1.8; }
.case-figures {
  display: flex;
  gap: 26px;
  margin-top: auto;
  padding-top: 22px;
  border-top: 1px solid var(--line-2);
}
.case-figures div { font-size: 13px; color: var(--muted); }
.case-figures strong {
  display: block;
  color: var(--ink);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -.02em;
}

/* CTA 区块 */
.cta-panel {
  position: relative;
  padding: 68px 60px;
  border-radius: var(--radius-lg);
  background: linear-gradient(118deg, #2a1f17 0%, #1d1a18 100%);
  overflow: hidden;
  box-shadow: 0 30px 70px -32px rgba(31, 18, 8, .35);
}
.cta-panel::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -110px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(244, 160, 124, .55), transparent 65%);
}
.cta-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.cta-panel h2 { color: #fff; font-size: clamp(24px, 2.6vw, 34px); margin-bottom: 12px; }
.cta-panel p { color: rgba(255, 255, 255, .62); font-size: 16px; max-width: 520px; }

/* ---------- 10. 页面横幅 ---------- */
.page-banner {
  position: relative;
  padding: 78px 0 66px;
  background:
    radial-gradient(700px 320px at 82% -20%, rgba(255, 255, 255, .55), transparent 70%),
    var(--panel);
  border-bottom: 1px solid rgba(255, 255, 255, .8);
  z-index: 1;
}
.page-banner h1 {
  font-size: clamp(30px, 3.8vw, 46px);
  margin-bottom: 16px;
}
.page-banner p {
  max-width: 640px;
  font-size: 16.5px;
  line-height: 1.85;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 13px;
  color: var(--muted);
}
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb .icon { width: 13px; height: 13px; }

/* ---------- 11. 服务明细 ---------- */
.service-block {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 56px;
  padding: 52px 0;
  border-top: 1px solid var(--line);
}
.service-block:last-child { border-bottom: 1px solid var(--line); }
.service-aside { position: sticky; top: calc(var(--header-h) + 32px); align-self: start; }
.service-index {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
}
.service-aside h2 { font-size: clamp(24px, 2.6vw, 32px); margin-bottom: 6px; }
.service-en {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.service-aside > p { font-size: 15.5px; line-height: 1.85; }

.service-body h3 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.service-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.mini-card {
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: var(--radius);
  background: #ffffff;
  box-shadow: 0 1px 2px rgba(31, 18, 8, .03), 0 12px 26px -16px rgba(31, 18, 8, .14);
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.mini-card:hover {
  border-color: rgba(255, 255, 255, .9);
  box-shadow: 0 1px 2px rgba(31, 18, 8, .03), 0 20px 36px -20px rgba(31, 18, 8, .2);
}
.mini-card h4 { font-size: 16px; margin-bottom: 8px; font-weight: 600; }
.mini-card p { font-size: 14px; line-height: 1.78; }

.service-note {
  margin-top: 22px;
  padding: 18px 22px;
  border-radius: var(--radius-sm);
  background: var(--panel);
  border: 1px solid var(--panel-line);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-2);
}
.service-note strong { color: var(--ink); }

/* 步骤流程条 */
.flow {
  display: flex;
  align-items: stretch;
  gap: 0;
  flex-wrap: wrap;
}
.flow-item {
  flex: 1 1 160px;
  padding: 20px 18px;
  border: 1px solid #ffffff;
  border-right: 0;
  background: #ffffff;
}
.flow-item:last-child { border-right: 1px solid #ffffff; border-radius: 0 var(--radius) var(--radius) 0; }
.flow-item:first-child { border-radius: var(--radius) 0 0 var(--radius); }
.flow-item .k {
  display: block;
  font-size: 12px;
  color: var(--brand);
  letter-spacing: .1em;
  margin-bottom: 6px;
}
.flow-item .v { font-size: 14.5px; color: var(--ink); font-weight: 500; }
.flow-item .s { display: block; font-size: 12.5px; color: var(--muted); margin-top: 2px; }

/* ---------- 12. 联系页 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 56px;
  align-items: start;
}

.contact-item {
  display: flex;
  gap: 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.contact-item:first-child { padding-top: 0; }
.contact-item .icon-box { margin-bottom: 0; width: 42px; height: 42px; }
.contact-item h3 { font-size: 13px; color: var(--muted); font-weight: 500; margin-bottom: 4px; letter-spacing: .04em; }
.contact-item .val { color: var(--ink); font-size: 16px; font-weight: 500; word-break: break-word; }
.contact-item .note { font-size: 13px; color: var(--muted); margin-top: 2px; }
a.val:hover { color: var(--brand); }

.form-card {
  padding: 40px;
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: var(--radius-lg);
  background: #ffffff;
  box-shadow: 0 1px 2px rgba(31, 18, 8, .04), 0 28px 60px -28px rgba(31, 18, 8, .24);
}
.form-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.field { margin-bottom: 20px; }
.field label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
}
.field label .req { color: var(--brand); margin-left: 2px; }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;
  font-size: 15px;
  color: var(--ink);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field textarea { min-height: 118px; resize: vertical; line-height: 1.75; }
.field input::placeholder,
.field textarea::placeholder { color: #b3b9c2; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(226, 118, 43, .12);
}
.field.has-error input,
.field.has-error select,
.field.has-error textarea { border-color: #d9453c; }
.field-error {
  display: none;
  margin-top: 6px;
  font-size: 12.5px;
  color: #d9453c;
}
.field.has-error .field-error { display: block; }

.form-consent {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-bottom: 24px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--body);
}
.form-consent input { margin-top: 4px; accent-color: var(--brand); }

.form-status {
  display: none;
  margin-top: 18px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 14.5px;
}
.form-status.is-visible { display: block; }
.form-status.is-ok { background: #f0f9f4; border: 1px solid #ccebd9; color: #1a7f4b; }
.form-status.is-err { background: #fdf3f2; border: 1px solid #f5d5d2; color: #b8352c; }

.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  cursor: pointer;
  font-size: 16.5px;
  font-weight: 500;
  color: var(--ink);
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .icon { color: var(--muted); transition: transform .25s var(--ease); flex: none; }
.faq-item[open] summary .icon { transform: rotate(45deg); color: var(--brand); }
.faq-item .faq-body {
  padding: 0 0 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--body);
  max-width: 760px;
}

/* ---------- 13. 页脚 ---------- */
.site-footer {
  background: linear-gradient(180deg, #2a1f17 0%, #1d1a18 100%);
  color: rgba(255, 255, 255, .55);
  padding: 72px 0 32px;
  font-size: 14.5px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.footer-brand .brand-name { color: #fff; }
.footer-brand p { margin-top: 18px; max-width: 300px; line-height: 1.85; }
.footer-col h4 {
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.footer-col li { margin-bottom: 11px; }
.footer-col a:hover { color: #fff; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact .icon { width: 16px; height: 16px; margin-top: 4px; color: rgba(255, 255, 255, .4); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 26px;
  font-size: 13px;
  color: rgba(255, 255, 255, .4);
}
.footer-bottom .divider { color: rgba(255, 255, 255, .2); }
.footer-bottom .beian {
  color: rgba(255, 255, 255, .5);
  text-decoration: none;
  transition: color .2s ease;
}
.footer-bottom .beian:hover { color: #e0913a; }

/* ---------- 14. 滚动揭示动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .001ms !important; }
}

/* ---------- 15. 响应式 ---------- */
@media (max-width: 1080px) {
  .service-block { grid-template-columns: 260px 1fr; gap: 40px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .chain { grid-template-columns: repeat(3, 1fr); }
  .chain-step:nth-child(3) { border-right: 0; }
  .chain-step:nth-child(4) { border-top: 1px solid var(--line); }
  .chain-step:nth-child(5) { border-top: 1px solid var(--line); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 900px) {
  .container { padding: 0 22px; }
  .section { padding: 72px 0; }
  .section--tight { padding: 56px 0; }

  .nav-toggle { display: grid; }

  .nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 12px 22px 22px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav-link {
    padding: 13px 4px;
    font-size: 16px;
    border-radius: 0;
    border-bottom: 1px solid var(--line-2);
  }
  .nav-link.is-active::after { display: none; }
  .nav .btn { margin-top: 12px; }
  .nav-cta { display: inline-flex; width: 100%; }
  .header-actions .btn--sm { display: none; }

  .hero { padding: 60px 0 56px; }
  .hero-inner { grid-template-columns: 1fr; gap: 44px; }
  .flywheel { max-width: 380px; margin: 0 auto; }
  .hero-cta .btn { flex: 1 1 180px; }

  .split,
  .contact-grid,
  .service-block { grid-template-columns: 1fr; gap: 36px; }
  .service-aside { position: static; }
  .split { gap: 44px; }

  .grid-2,
  .grid-3,
  .service-cards { grid-template-columns: 1fr; }

  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat { border-bottom: 1px solid rgba(255, 255, 255, .1); }
  .stat:nth-child(2n) { border-right: 0; }
  .stat:nth-child(n+3) { border-bottom: 0; }

  .cta-panel { padding: 44px 30px; }
  .cta-inner { flex-direction: column; align-items: flex-start; gap: 28px; }

  .form-card { padding: 28px 22px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
}

@media (max-width: 620px) {
  .grid-4 { grid-template-columns: 1fr; }
  .chain { grid-template-columns: 1fr; }
  .chain-step { border-right: 0; border-bottom: 1px solid var(--line); }
  .chain-step:last-child { border-bottom: 0; }
  .chain-step:nth-child(4),
  .chain-step:nth-child(5) { border-top: 0; }
  .stats { grid-template-columns: 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid rgba(255, 255, 255, .1); padding: 26px 22px; }
  .stat:last-child { border-bottom: 0; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
  .quote { padding: 22px 24px; }
  .flow-item { flex: 1 1 100%; border-right: 1px solid var(--line); }
  .flow-item:first-child { border-radius: var(--radius) var(--radius) 0 0; }
  .flow-item:last-child { border-radius: 0 0 var(--radius) var(--radius); }
  .flow-item + .flow-item { border-top: 0; }
}