/* =========================================================
   知行合一（河南）智能科技有限公司 · 官网样式
   heyiwise.com — 手写 CSS，无外部依赖
   ========================================================= */

/* ---------- 1. 设计变量 ---------- */
:root {
  --bg: #ffffff;
  --bg-soft: #f4f6fa;
  --bg-deep: #070b14;
  --bg-deep-2: #0b1220;

  --ink: #0a0f1c;
  --ink-2: #3a4356;
  --ink-3: #6b7689;
  --ink-inv: #eef2f9;

  --line: #e3e8f0;
  --line-2: #eef1f6;
  --line-dark: rgba(255, 255, 255, 0.1);

  --brand: #1b5cff;
  --brand-600: #0d49dd;
  --brand-soft: #eaf0ff;
  --cyan: #20d3ee;
  --alert: #ff4d4f;
  --amber: #ffb020;

  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 22px;

  --shadow-sm: 0 2px 8px rgba(10, 20, 40, 0.06);
  --shadow: 0 24px 60px -28px rgba(10, 20, 40, 0.35);

  --maxw: 1200px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei UI", "Microsoft YaHei",
    "Source Han Sans SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI",
    system-ui, sans-serif;
}

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

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

section[id], div[id], h2[id] { scroll-margin-top: 96px; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-2);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5 { margin: 0; color: var(--ink); font-weight: 600; line-height: 1.28; letter-spacing: -0.015em; text-wrap: balance; }
p { margin: 0; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
::selection { background: var(--brand); color: #fff; }

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

.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 999;
  background: var(--ink); color: #fff; padding: 10px 18px; border-radius: 8px;
  transition: top 0.2s;
}
.skip-link:focus { top: 12px; }

/* ---------- 3. 布局工具 ---------- */
.container { width: min(100% - 48px, var(--maxw)); margin-inline: auto; }
.container--wide { width: min(100% - 48px, 1360px); }

.section { padding: 104px 0; position: relative; }
.section--tight { padding: 72px 0; }
.section--soft { background: var(--bg-soft); }
.section--deep { background: var(--bg-deep); color: #b9c2d4; }
.section--deep h2, .section--deep h3, .section--deep h4 { color: #fff; }

.section--deep::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(80% 60% at 50% 0%, #000 25%, transparent 80%);
}

.section--deep > .container { position: relative; z-index: 1; }

.sec-head { max-width: 720px; }
.sec-head--center { margin-inline: auto; text-align: center; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.16em;
  color: var(--brand); text-transform: uppercase; margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--brand); border-radius: 2px; }
.section--deep .eyebrow { color: var(--cyan); }
.section--deep .eyebrow::before { background: var(--cyan); }

.sec-title { font-size: clamp(26px, 3.1vw, 42px); }
.sec-lead { margin-top: 18px; font-size: 17px; color: var(--ink-3); max-width: 64ch; }
.section--deep .sec-lead { color: #8e9ab1; }

.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
.mt-56 { margin-top: 56px; }
.mt-72 { margin-top: 72px; }

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: 50px; padding: 0 26px; border-radius: 10px; border: 1px solid transparent;
  font-size: 15px; font-weight: 600; letter-spacing: 0.01em; white-space: nowrap;
  transition: transform 0.25s var(--ease), background 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.btn svg { width: 16px; height: 16px; transition: transform 0.3s var(--ease); }
.btn:hover svg { transform: translateX(3px); }

.btn--primary {
  background: var(--brand); color: #fff;
  box-shadow: 0 12px 26px -12px rgba(27, 92, 255, 0.75);
}
.btn--primary:hover { background: var(--brand-600); transform: translateY(-2px); }

.btn--ghost { border-color: rgba(255, 255, 255, 0.28); color: #fff; background: rgba(255, 255, 255, 0.04); }
.btn--ghost:hover { background: rgba(255, 255, 255, 0.12); transform: translateY(-2px); }

.btn--line { border-color: var(--line); color: var(--ink); background: #fff; }
.btn--line:hover { border-color: var(--ink); transform: translateY(-2px); }

.btn--sm { height: 42px; padding: 0 20px; font-size: 14px; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600; color: var(--brand);
}
.link-arrow svg { width: 15px; height: 15px; transition: transform 0.3s var(--ease); }
.link-arrow:hover svg { transform: translateX(4px); }

/* ---------- 5. 页头导航 ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background 0.35s var(--ease), border-color 0.35s, box-shadow 0.35s;
  border-bottom: 1px solid transparent;
}
.site-header.is-solid {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom-color: var(--line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 32px;
  height: 76px;
}

.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; }
.brand__mark {
  width: 42px; height: 42px; flex: none; padding: 2px; border-radius: 10px;
  background: #fff; object-fit: contain;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.4), 0 8px 20px -10px rgba(0, 0, 0, 0.6);
}
.site-header.is-solid .brand__mark { box-shadow: 0 0 0 1px rgba(10, 15, 28, 0.1); }
.site-footer .brand__mark { box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.16); }
.brand__text { display: grid; line-height: 1.15; }
.brand__name { font-size: 17px; font-weight: 700; color: #fff; letter-spacing: 0.02em; }
.brand__sub { font-size: 10px; letter-spacing: 0.22em; color: rgba(255, 255, 255, 0.62); text-transform: uppercase; }

.site-header.is-solid .brand__name { color: var(--ink); }
.site-header.is-solid .brand__sub { color: var(--ink-3); }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  position: relative; padding: 10px 14px; border-radius: 8px;
  font-size: 15px; font-weight: 500; color: rgba(255, 255, 255, 0.78);
  transition: color 0.2s, background 0.2s;
}
.nav a:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }
.nav a[aria-current="page"] { color: #fff; }
.nav a[aria-current="page"]::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 4px;
  height: 2px; background: var(--cyan); border-radius: 2px;
}
.site-header.is-solid .nav a { color: var(--ink-2); }
.site-header.is-solid .nav a:hover { color: var(--ink); background: var(--bg-soft); }
.site-header.is-solid .nav a[aria-current="page"] { color: var(--brand); }
.site-header.is-solid .nav a[aria-current="page"]::after { background: var(--brand); }

.header-actions { display: flex; align-items: center; gap: 14px; flex: none; }
.header-tel {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600; color: #fff; letter-spacing: 0.02em;
}
.header-tel svg { width: 15px; height: 15px; opacity: 0.7; }
.site-header.is-solid .header-tel { color: var(--ink); }

.nav-toggle {
  display: none; width: 44px; height: 44px; border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 10px; background: rgba(255, 255, 255, 0.06);
  align-items: center; justify-content: center;
}
.nav-toggle span { display: block; width: 18px; height: 1.6px; background: #fff; position: relative; transition: 0.3s; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 1.6px; background: #fff; transition: 0.3s;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.site-header.is-solid .nav-toggle { border-color: var(--line); background: #fff; }
.site-header.is-solid .nav-toggle span,
.site-header.is-solid .nav-toggle span::before,
.site-header.is-solid .nav-toggle span::after { background: var(--ink); }

body.nav-open .nav-toggle span { background: transparent; }
body.nav-open .nav-toggle span::before { transform: translateY(6px) rotate(45deg); }
body.nav-open .nav-toggle span::after { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 6. 首屏 ---------- */
.hero {
  position: relative; min-height: 92vh; display: flex; align-items: flex-end;
  padding: 140px 0 72px; overflow: hidden; color: #fff;
  background: var(--bg-deep);
}
.hero__media { position: absolute; inset: 0; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; object-position: 62% 55%; }
.hero__media::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(4, 8, 16, 0.96) 0%, rgba(4, 8, 16, 0.88) 40%, rgba(4, 8, 16, 0.55) 62%, rgba(4, 8, 16, 0.1) 80%, rgba(4, 8, 16, 0.32) 100%),
    linear-gradient(0deg, rgba(4, 8, 16, 0.96) 0%, rgba(4, 8, 16, 0) 45%);
}
.hero__inner { position: relative; z-index: 2; }

.hero__tag {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 7px 16px 7px 10px; border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2); background: rgba(255, 255, 255, 0.07);
  font-size: 13px; color: rgba(255, 255, 255, 0.86); letter-spacing: 0.02em;
  backdrop-filter: blur(6px);
}
.hero__tag b { color: var(--cyan); font-weight: 600; }

.hero h1 {
  color: #fff; margin: 26px 0 0;
  font-size: clamp(20px, 4.2vw, 54px); line-height: 1.14; letter-spacing: -0.025em;
  font-weight: 700; max-width: none;
}
.hero h1 em { font-style: normal; color: var(--cyan); }
.hero__lead {
  margin-top: 24px; max-width: 38em; font-size: clamp(15px, 1.35vw, 18px);
  color: rgba(255, 255, 255, 0.76); line-height: 1.85;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }

.hero__kpis {
  position: relative;
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0;
  margin-top: 64px; padding-top: 28px; border-top: 1px solid rgba(255, 255, 255, 0.14);
}
/* 数据条背后的压暗层，保证压在机器人白漆上也能读清 */
.hero__kpis::before {
  content: ""; position: absolute; z-index: -1;
  left: -50vw; right: -50vw; top: -34px; bottom: -80px;
  background: linear-gradient(180deg, rgba(4, 8, 16, 0) 0%, rgba(4, 8, 16, 0.55) 38%, rgba(4, 8, 16, 0.82) 100%);
  pointer-events: none;
}
.hero__kpis div { padding-right: 20px; }
.hero__kpis div + div { padding-left: 28px; border-left: 1px solid rgba(255, 255, 255, 0.12); }
.hero__kpis b {
  display: block; font-size: clamp(24px, 2.4vw, 32px); font-weight: 700; color: #fff;
  font-variant-numeric: tabular-nums; letter-spacing: -0.02em; line-height: 1.2;
}
.hero__kpis b span { font-size: 0.55em; font-weight: 600; margin-left: 2px; color: var(--cyan); }
.hero__kpis small { display: block; margin-top: 6px; font-size: 13px; color: rgba(255, 255, 255, 0.55); }

.scroll-hint {
  position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%); z-index: 2;
  display: grid; justify-items: center; gap: 8px;
  font-size: 11px; letter-spacing: 0.2em; color: rgba(255, 255, 255, 0.45);
}
.scroll-hint i { display: block; width: 1px; height: 34px; background: linear-gradient(rgba(255, 255, 255, 0.5), transparent); }

/* ---------- 7. 内页头图 ---------- */
.page-hero {
  position: relative; padding: 168px 0 76px; overflow: hidden;
  background: var(--bg-deep); color: #b9c2d4;
}
.page-hero__media { position: absolute; inset: 0; }
.page-hero__media img { width: 100%; height: 100%; object-fit: cover; opacity: 0.5; }
.page-hero__media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(5, 9, 18, 0.96) 0%, rgba(5, 9, 18, 0.82) 48%, rgba(5, 9, 18, 0.55) 100%);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { color: #fff; font-size: clamp(30px, 4vw, 52px); letter-spacing: -0.02em; }
.page-hero p { margin-top: 18px; max-width: 52em; color: rgba(255, 255, 255, 0.68); font-size: 16.5px; }

.breadcrumb {
  display: flex; align-items: center; gap: 10px; margin-bottom: 22px;
  font-size: 13px; color: rgba(255, 255, 255, 0.45);
}
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { opacity: 0.5; }

.h1-eyebrow { margin-bottom: 20px; }

/* ---------- 8. 卡片与网格 ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 34px; transition: transform 0.35s var(--ease), box-shadow 0.35s, border-color 0.35s;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #d3dceb; }
.card h3 { font-size: 19px; }
.card p { margin-top: 12px; font-size: 14.5px; color: var(--ink-3); }

.card__icon {
  width: 46px; height: 46px; display: grid; place-items: center; border-radius: 12px;
  background: var(--brand-soft); color: var(--brand); margin-bottom: 22px;
}
.card__icon svg { width: 22px; height: 22px; }
.section--deep .card { background: rgba(255, 255, 255, 0.035); border-color: rgba(255, 255, 255, 0.09); }
.section--deep .card:hover { border-color: rgba(32, 211, 238, 0.4); box-shadow: none; }
.section--deep .card p { color: #8e9ab1; }
.section--deep .card__icon { background: rgba(32, 211, 238, 0.1); color: var(--cyan); }

.card__num {
  font-size: 12px; font-weight: 700; letter-spacing: 0.14em; color: var(--brand);
  display: block; margin-bottom: 16px; font-variant-numeric: tabular-nums;
}

/* 产品卡 */
.pcard { display: flex; flex-direction: column; overflow: hidden; padding: 0; text-decoration: none; }
.pcard__media { position: relative; aspect-ratio: 4 / 5; background: #edf0f5; overflow: hidden; }
.pcard__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.pcard__media--campus img { object-position: 31% 50%; }
.pcard__media--fit {
  background: radial-gradient(120% 80% at 50% 12%, #ffffff 0%, #eef2f8 42%, #dfe6f1 100%);
  display: grid; place-items: start center;
}
.pcard__media--fit img {
  width: auto; height: auto; max-width: 78%; max-height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 30px 34px rgba(10, 20, 40, 0.22));
}
.pcard:hover .pcard__media--fit img { transform: translateY(-4px); }

/* 产品展示台（产品页/关于页） */
.product-stage {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--line); padding: 28px 18px 0;
  background: radial-gradient(110% 75% at 50% 8%, #ffffff 0%, #eef2f8 45%, #dde4f0 100%);
  display: grid; place-items: end center; min-height: 420px;
}
.product-stage img {
  width: auto; max-height: 560px; object-fit: contain;
  filter: drop-shadow(0 26px 30px rgba(10, 20, 40, 0.24));
}
.section--deep .product-stage { border-color: rgba(255, 255, 255, 0.1); }
.pcard:hover .pcard__media img { transform: scale(1.04); }
.pcard__badge {
  position: absolute; left: 16px; top: 16px; z-index: 2; padding: 5px 12px; border-radius: 999px;
  background: rgba(7, 11, 20, 0.72); color: #fff; font-size: 12px; font-weight: 600;
  letter-spacing: 0.04em; backdrop-filter: blur(6px);
}
.pcard__body { padding: 26px 26px 30px; display: flex; flex-direction: column; flex: 1; }
.pcard__body h3 { font-size: 20px; }
.pcard__body .pcard__desc { margin-top: 10px; font-size: 14px; color: var(--ink-3); }
.pcard__meta {
  display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px;
}
.chip {
  display: inline-flex; align-items: center; height: 28px; padding: 0 12px; border-radius: 999px;
  background: var(--bg-soft); color: var(--ink-2); font-size: 12.5px; border: 1px solid var(--line);
}
.section--deep .chip { background: rgba(255, 255, 255, 0.06); border-color: rgba(255, 255, 255, 0.1); color: #b9c2d4; }
.pcard__more { margin-top: 24px; }

/* 特性行 */
.feature-row {
  display: grid; grid-template-columns: 88px 1fr; gap: 28px;
  padding: 34px 0; border-top: 1px solid var(--line);
}
.feature-row:last-child { border-bottom: 1px solid var(--line); }
.feature-row__idx {
  font-size: 13px; font-weight: 700; letter-spacing: 0.12em; color: var(--ink-3);
  font-variant-numeric: tabular-nums; padding-top: 4px;
}
.feature-row h3 { font-size: 20px; }
.feature-row p { margin-top: 10px; font-size: 15px; color: var(--ink-3); max-width: 70ch; }
.section--deep .feature-row { border-color: var(--line-dark); }
.section--deep .feature-row__idx { color: rgba(255, 255, 255, 0.35); }
.section--deep .feature-row p { color: #8e9ab1; }

/* ---------- 9. 数据条 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); }
.stats > div { background: #fff; padding: 40px 30px; }
.section--soft .stats > div { background: var(--bg-soft); }
.section--deep .stats { background: rgba(255, 255, 255, 0.1); }
.section--deep .stats > div { background: var(--bg-deep); }
.stats b {
  display: block; font-size: clamp(30px, 3.2vw, 44px); font-weight: 700; color: var(--ink);
  line-height: 1.1; letter-spacing: -0.03em; font-variant-numeric: tabular-nums;
}
.section--deep .stats b { color: #fff; }
.stats b span { font-size: 0.45em; color: var(--brand); margin-left: 4px; font-weight: 600; }
.section--deep .stats b span { color: var(--cyan); }
.stats small { display: block; margin-top: 10px; font-size: 13.5px; color: var(--ink-3); }
.section--deep .stats small { color: #8e9ab1; }

/* ---------- 10. 方案/场景大块 ---------- */
.solution-block {
  display: grid; grid-template-columns: 1.05fr 1fr; align-items: stretch; gap: 0;
  border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; background: #fff;
}
.solution-block + .solution-block { margin-top: 28px; }
.solution-block--flip .solution-block__media { order: 2; }
.solution-block__media { position: relative; min-height: 380px; background: #e9edf3; }
.solution-block__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.solution-block__body { padding: 48px; display: flex; flex-direction: column; justify-content: center; }
.solution-block__body h3 { font-size: clamp(22px, 2.2vw, 30px); }
.solution-block__body .kicker { margin-bottom: 14px; }
.solution-block__body p { margin-top: 16px; font-size: 15px; color: var(--ink-3); }
.kicker {
  display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px; font-weight: 700;
  letter-spacing: 0.14em; color: var(--brand); text-transform: uppercase;
}
.kicker::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

.bullet-list { margin-top: 22px; display: grid; gap: 12px; }
.bullet-list li { position: relative; padding-left: 22px; font-size: 14.5px; color: var(--ink-2); }
.bullet-list li::before {
  content: ""; position: absolute; left: 4px; top: 0.72em; width: 6px; height: 6px;
  border-radius: 50%; background: var(--brand); opacity: 0.85;
}
.section--deep .bullet-list li { color: #a8b2c6; }

/* 场景卡 */
.scene-card {
  display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s, border-color 0.35s;
}
.scene-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #d3dceb; }
.scene-card__media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: #e9edf3; }
.scene-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s var(--ease); }
.scene-card:hover .scene-card__media img { transform: scale(1.045); }
.scene-card__body { padding: 30px 32px 34px; }
.scene-card__body h3 { font-size: 22px; margin-top: 10px; }
.scene-card__body p { margin-top: 12px; font-size: 14.5px; color: var(--ink-3); }
.scene-card .bullet-list { margin-top: 18px; gap: 9px; }
.scene-card .bullet-list li { font-size: 13.5px; }

/* ---------- 11. 时间轴 ---------- */
.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: ""; position: absolute; left: 5px; top: 8px; bottom: 8px; width: 2px;
  background: linear-gradient(var(--brand), rgba(27, 92, 255, 0.1));
}
.timeline li { position: relative; padding-bottom: 34px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: ""; position: absolute; left: -28px; top: 7px; width: 12px; height: 12px;
  border-radius: 50%; background: #fff; border: 2px solid var(--brand); box-shadow: 0 0 0 4px #fff;
}
.timeline .tl-date { font-size: 13px; font-weight: 700; color: var(--brand); letter-spacing: 0.06em; font-variant-numeric: tabular-nums; }
.timeline h4 { margin-top: 6px; font-size: 16px; }
.timeline p { margin-top: 6px; font-size: 14px; color: var(--ink-3); }

/* ---------- 12. 表格 ---------- */
.spec-table { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; }
.spec-table th, .spec-table td { padding: 16px 22px; text-align: left; font-size: 14.5px; border-bottom: 1px solid var(--line-2); }
.spec-table th { background: var(--bg-soft); font-weight: 600; color: var(--ink); font-size: 13.5px; letter-spacing: 0.04em; }
.spec-table td:first-child { color: var(--ink-3); width: 30%; }
.spec-table tr:last-child td { border-bottom: 0; }
.spec-table td strong { color: var(--ink); font-variant-numeric: tabular-nums; }

/* ---------- 13. 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; counter-reset: step; }
.step { position: relative; padding: 0 26px 0 0; }
.step::before {
  counter-increment: step; content: "0" counter(step);
  display: block; font-size: 13px; font-weight: 700; color: var(--brand);
  letter-spacing: 0.1em; padding-bottom: 16px; font-variant-numeric: tabular-nums;
}
.step::after {
  content: ""; position: absolute; left: 0; right: 26px; top: 26px; height: 1px; background: var(--line);
}
.step:last-child::after { display: none; }
.step h4 { font-size: 17px; padding-top: 10px; }
.step p { margin-top: 8px; font-size: 14px; color: var(--ink-3); }

/* ---------- 14. 案例 ---------- */
.case-card { display: grid; grid-template-columns: 1fr 1fr; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.case-card__media { min-height: 300px; position: relative; }
.case-card__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.case-card__body { padding: 44px; display: flex; flex-direction: column; justify-content: center; }
.case-card__body h3 { font-size: 22px; }
.case-card__body p { margin-top: 14px; font-size: 14.5px; color: var(--ink-3); }
.case-card__tags { display: flex; gap: 8px; margin-top: 20px; flex-wrap: wrap; }

/* ---------- 15. CTA 区块 ---------- */
.cta-band {
  position: relative; overflow: hidden; border-radius: var(--radius-lg);
  padding: 64px; background: linear-gradient(120deg, #0a1130 0%, #10245e 52%, #0b3f7a 100%);
  color: #fff; display: flex; align-items: center; justify-content: space-between; gap: 40px;
}
.cta-band::after {
  content: ""; position: absolute; right: -120px; top: -160px; width: 520px; height: 520px;
  border-radius: 50%; background: radial-gradient(circle, rgba(32, 211, 238, 0.35), transparent 62%);
  pointer-events: none;
}
.cta-band h2 { color: #fff; font-size: clamp(24px, 2.6vw, 36px); max-width: 22em; }
.cta-band p { margin-top: 14px; color: rgba(255, 255, 255, 0.7); font-size: 15.5px; }
.cta-band .btn { position: relative; z-index: 1; flex: none; }

/* ---------- 16. 表单 ---------- */
.form { display: grid; gap: 20px; }
.field { display: grid; gap: 8px; }
.field label { font-size: 13.5px; font-weight: 600; color: var(--ink); }
.field label span { color: var(--alert); margin-left: 2px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 16px; border: 1px solid var(--line); border-radius: 10px;
  font: inherit; font-size: 15px; color: var(--ink); background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea { min-height: 132px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px rgba(27, 92, 255, 0.12);
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-note { font-size: 13px; color: var(--ink-3); }
.form-status { font-size: 14px; padding: 12px 16px; border-radius: 10px; display: none; }
.form-status.is-ok { display: block; background: #eaf7ef; color: #1a7f45; }
.form-status.is-err { display: block; background: #fdecec; color: #b42318; }
.checkbox { display: flex; gap: 10px; align-items: flex-start; font-size: 13.5px; color: var(--ink-3); }
.checkbox input { width: 16px; height: 16px; margin-top: 3px; flex: none; }

/* ---------- 17. 联系信息 ---------- */
.info-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.info-item { display: flex; gap: 18px; padding: 28px 0; border-top: 1px solid var(--line); }
.info-item svg { width: 20px; height: 20px; color: var(--brand); flex: none; margin-top: 5px; }
.info-item h4 { font-size: 15px; }
.info-item p { margin-top: 6px; font-size: 14.5px; color: var(--ink-3); }
.info-item a:hover { color: var(--brand); }

.map-box {
  position: relative; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line);
  min-height: 380px; background:
    linear-gradient(135deg, #eef3fa, #e3eaf5);
}
.map-box__grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(27, 92, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 92, 255, 0.07) 1px, transparent 1px);
  background-size: 48px 48px;
}
.map-box__pin {
  position: absolute; left: 50%; top: 46%; transform: translate(-50%, -100%);
  display: grid; justify-items: center; gap: 10px;
}
.map-box__dot {
  width: 16px; height: 16px; border-radius: 50%; background: var(--brand);
  box-shadow: 0 0 0 8px rgba(27, 92, 255, 0.16), 0 0 0 20px rgba(27, 92, 255, 0.07);
}
.map-box__label {
  background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 10px 16px;
  font-size: 13.5px; color: var(--ink); box-shadow: var(--shadow-sm); white-space: nowrap;
}
.map-box__hint { position: absolute; left: 20px; bottom: 18px; font-size: 12px; color: var(--ink-3); }

/* ---------- 18. 新闻 ---------- */
.news-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.news-item {
  display: grid; grid-template-columns: 130px 1fr auto; gap: 28px; align-items: center;
  padding: 30px 4px; border-bottom: 1px solid var(--line); transition: background 0.25s, padding 0.25s;
}
.news-item:hover { background: var(--bg-soft); padding-left: 16px; padding-right: 16px; }
.news-item time { font-size: 13.5px; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.news-item h3 { font-size: 17.5px; }
.news-item p { margin-top: 6px; font-size: 14px; color: var(--ink-3); }
.news-item svg { width: 18px; height: 18px; color: var(--ink-3); }
.news-item:hover svg { color: var(--brand); }

.featured-news {
  display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line);
  border-radius: var(--radius-lg); overflow: hidden; background: #fff;
}
.featured-news__media { min-height: 340px; position: relative; }
.featured-news__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.featured-news__body { padding: 46px; display: flex; flex-direction: column; justify-content: center; }
.featured-news__body h2 { font-size: 26px; margin-top: 14px; }

/* ---------- 19. 页脚 ---------- */
.site-footer { background: var(--bg-deep); color: #8e9ab1; padding: 76px 0 0; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.1fr; gap: 48px; padding-bottom: 56px; }
.footer-brand .brand__name { color: #fff; }
.footer-brand .brand__sub { color: rgba(255, 255, 255, 0.45); }
.footer-brand p { margin-top: 20px; font-size: 14px; line-height: 1.9; max-width: 34ch; }
.site-footer h4 { font-size: 13px; color: #fff; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 20px; }
.footer-links { display: grid; gap: 12px; font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-contact { display: grid; gap: 14px; font-size: 14px; }
.footer-contact b { display: block; font-size: 12px; color: rgba(255, 255, 255, 0.4); font-weight: 500; letter-spacing: 0.06em; margin-bottom: 2px; }
.footer-contact a:hover { color: #fff; }
.footer-bottom {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px;
  padding: 26px 0; border-top: 1px solid rgba(255, 255, 255, 0.08); font-size: 12.5px;
  color: rgba(255, 255, 255, 0.42);
}
.footer-bottom a:hover { color: #fff; }

/* ---------- 20. 通用组件 ---------- */
.tag-note {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px;
  background: #fff8e6; border: 1px solid #ffe2a8; color: #8a5a00; font-size: 12.5px;
}
.divider { height: 1px; background: var(--line); border: 0; margin: 0; }
.section--deep .divider { background: var(--line-dark); }

.quote {
  border-left: 2px solid var(--brand); padding: 6px 0 6px 24px;
  font-size: 17px; color: var(--ink-2); line-height: 1.9;
}

.badge-row { display: flex; flex-wrap: wrap; gap: 10px; }
.badge {
  display: inline-flex; align-items: center; gap: 8px; height: 34px; padding: 0 14px;
  border-radius: 8px; border: 1px solid var(--line); background: #fff; font-size: 13px; color: var(--ink-2);
}
.badge svg { width: 15px; height: 15px; color: var(--brand); }

/* 滚动浮现 */
[data-reveal] { opacity: 0; transform: translateY(20px); transition: opacity 0.75s var(--ease), transform 0.75s var(--ease); }
[data-reveal].is-in { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: 0.08s; }
[data-reveal][data-delay="2"] { transition-delay: 0.16s; }
[data-reveal][data-delay="3"] { transition-delay: 0.24s; }
[data-reveal][data-delay="4"] { transition-delay: 0.32s; }

/* 标签页 */
.tablist {
  display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 56px;
  border-bottom: 1px solid var(--line);
}
.tab {
  position: relative; padding: 16px 22px; border: 0; background: none;
  font-size: 15px; font-weight: 600; color: var(--ink-3);
  border-radius: 10px 10px 0 0; transition: color 0.2s, background 0.2s;
}
.tab:hover { color: var(--ink); background: var(--bg-soft); }
.tab[aria-selected="true"] { color: var(--brand); }
.tab[aria-selected="true"]::after {
  content: ""; position: absolute; left: 18px; right: 18px; bottom: -1px; height: 2px;
  background: var(--brand); border-radius: 2px;
}
[role="tabpanel"]:focus-visible { outline: 2px solid var(--brand); outline-offset: 12px; }

/* ---------- 21. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer-top { grid-template-columns: 1fr 1fr; gap: 40px; }
  .nav a { padding: 10px 10px; font-size: 14px; }
  .header-tel { display: none; }
  .hero__kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 26px; }
  .hero__kpis div:nth-child(3) { padding-left: 0; border-left: 0; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 40px; }
  .step:nth-child(2)::after { display: none; }
}

@media (max-width: 860px) {
  .section { padding: 72px 0; }
  .nav-toggle { display: flex; }
  .nav {
    position: fixed; inset: 76px 0 auto 0; flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 12px 24px 28px;
    transform: translateY(-12px); opacity: 0; pointer-events: none; transition: 0.3s var(--ease);
    box-shadow: 0 24px 40px -24px rgba(10, 20, 40, 0.3); max-height: calc(100vh - 76px); overflow: auto;
  }
  body.nav-open .nav { transform: none; opacity: 1; pointer-events: auto; }
  .nav a { color: var(--ink-2) !important; padding: 16px 4px; border-bottom: 1px solid var(--line-2); font-size: 16px; }
  .nav a[aria-current="page"] { color: var(--brand) !important; }
  .nav a[aria-current="page"]::after { display: none; }
  .header-actions .btn { display: none; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .tablist { flex-wrap: nowrap; overflow-x: auto; overflow-y: hidden; margin-bottom: 40px; scrollbar-width: none; }
  .tablist::-webkit-scrollbar { display: none; }
  .tab { white-space: nowrap; padding: 14px 16px; font-size: 14px; }
  .solution-block, .solution-block--flip { grid-template-columns: 1fr; }
  .solution-block--flip .solution-block__media { order: 0; }
  .solution-block__media { min-height: 280px; }
  .solution-block__body, .case-card__body, .featured-news__body { padding: 32px; }
  .case-card, .featured-news { grid-template-columns: 1fr; }
  .case-card__media, .featured-news__media { min-height: 240px; }
  .info-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cta-band { flex-direction: column; align-items: flex-start; padding: 40px 30px; }
  .field-row { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr auto; gap: 10px; }
  .news-item time { grid-column: 1 / -1; }
  .feature-row { grid-template-columns: 1fr; gap: 10px; padding: 26px 0; }
  .footer-top { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding: 128px 0 56px; }
  .hero__kpis { margin-top: 40px; }
  .page-hero { padding: 128px 0 56px; }
  .scroll-hint { display: none; }
}

@media (max-width: 560px) {
  .container, .container--wide { width: min(100% - 32px, var(--maxw)); }
  .steps { grid-template-columns: 1fr; }
  .step::after { display: none; }
  .hero { padding-top: 370px; }
  .hero__media { bottom: auto; height: calc(100% - 242px); }
  .hero h1 { font-size: 24px; }
  .btn { width: 100%; }
  .hero__actions, .cta-band .btn { width: 100%; }
  .stats { grid-template-columns: 1fr; }
  .spec-table th, .spec-table td { padding: 13px 14px; font-size: 13.5px; }
}

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

/* ---------- 22. 打印 ---------- */
@media print {
  .site-header, .site-footer, .scroll-hint, .cta-band .btn { display: none !important; }
  body { color: #000; }
  .section { padding: 24px 0; }
}