/* ============================================================
   合肥环科电动车零部件有限公司 — 官网共享样式系统
   工业风 · 蓝色主题 · 简约大气
   ============================================================ */

/* ---------- 设计令牌 (Design Tokens) ---------- */
:root {
  /* 品牌色 — 工业蓝 */
  --c-navy-900: #0a1f33;
  --c-navy-800: #0e2a45;
  --c-navy-700: #123655;
  --c-blue-600: #14538f;
  --c-blue-500: #1e6fb8;
  --c-blue-400: #2e8bd6;
  --c-blue-300: #6fb3e6;
  --c-steel-600: #41566b;
  --c-steel-500: #5b6b7a;
  --c-steel-400: #8a98a6;
  --c-line: #d8dee6;
  --c-bg: #f4f6f9;
  --c-bg-soft: #eef2f6;
  --c-white: #ffffff;
  --c-ink: #1a2733;
  --c-ink-soft: #44525f;

  /* 强调 / 状态 */
  --c-accent: #f5a623;   /* 工业橙，点缀用 */
  --c-ok: #1f9d6b;

  /* 排版 */
  --font-display: "Barlow Condensed", "Oswald", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Barlow", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* 间距 / 圆角 / 阴影 */
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px rgba(10, 31, 51, .06), 0 2px 6px rgba(10, 31, 51, .06);
  --shadow: 0 4px 14px rgba(10, 31, 51, .10);
  --shadow-lg: 0 18px 48px rgba(10, 31, 51, .16);

  /* 布局 */
  --container: 1200px;
  --header-h: 72px;

  /* 动效 */
  --ease: cubic-bezier(.22, .61, .36, 1);
  --t-fast: .18s;
  --t: .28s;
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--c-ink);
  background: var(--c-bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.12; margin: 0; letter-spacing: .01em; }
p { margin: 0; }

/* 焦点可见性 — 无障碍 */
:focus-visible { outline: 3px solid var(--c-blue-400); outline-offset: 2px; border-radius: 2px; }

.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 200;
  background: var(--c-navy-900); color: #fff; padding: 10px 16px;
  border-radius: var(--radius); transition: top var(--t);
}
.skip-link:focus { top: 12px; }

/* ---------- 布局工具 ---------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: 24px; }
.section { padding-block: clamp(56px, 8vw, 104px); position: relative; }
.section--tight { padding-block: clamp(40px, 5vw, 72px); }
.bg-soft { background: var(--c-bg-soft); }
.bg-navy { background: var(--c-navy-900); color: #e8eef5; }
.bg-grid {
  background-image:
    linear-gradient(rgba(20, 83, 143, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 83, 143, .06) 1px, transparent 1px);
  background-size: 36px 36px;
}

/* ---------- 文字工具 ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-display); text-transform: uppercase;
  letter-spacing: .18em; font-size: 13px; font-weight: 600;
  color: var(--c-blue-500);
}
.eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--c-blue-500); display: inline-block; }
.bg-navy .eyebrow { color: var(--c-blue-300); }
.bg-navy .eyebrow::before { background: var(--c-blue-300); }

.section-title { font-size: clamp(28px, 4vw, 44px); margin-top: 14px; color: var(--c-navy-900); }
.bg-navy .section-title { color: #fff; }
.section-lead { margin-top: 16px; max-width: 64ch; color: var(--c-ink-soft); font-size: 17px; }
.bg-navy .section-lead { color: #b9c7d6; }

.text-center { text-align: center; }
.mx-auto { margin-inline: auto; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 13px 26px; border-radius: var(--radius); font-weight: 600;
  font-family: var(--font-display); font-size: 16px; letter-spacing: .02em;
  border: 1.5px solid transparent; transition: transform var(--t-fast), background var(--t), box-shadow var(--t), color var(--t);
  will-change: transform;
}
.btn .ic { width: 18px; height: 18px; }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn--primary { background: var(--c-blue-600); color: #fff; box-shadow: var(--shadow-sm); }
.btn--primary:hover { background: var(--c-blue-500); box-shadow: var(--shadow); }
.btn--accent { background: var(--c-accent); color: var(--c-navy-900); }
.btn--accent:hover { background: #ffb733; }
.btn--ghost { background: transparent; color: var(--c-navy-900); border-color: var(--c-line); }
.btn--ghost:hover { border-color: var(--c-blue-500); color: var(--c-blue-600); }
.btn--light { background: #fff; color: var(--c-navy-900); }
.btn--light:hover { background: #eef4fb; }
.btn--block { width: 100%; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--c-line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; font-family: var(--font-display); }
.brand__mark {
  width: 40px; height: 40px; flex: none; border-radius: 9px;
  background: linear-gradient(135deg, var(--c-navy-800), var(--c-blue-500));
  display: grid; place-items: center; color: #fff; box-shadow: var(--shadow-sm);
}
.brand__mark svg { width: 24px; height: 24px; }
.brand__name { font-size: 18px; font-weight: 700; color: var(--c-navy-900); line-height: 1.05; }
.brand__name small { display: block; font-family: var(--font-body); font-weight: 500; font-size: 11px; letter-spacing: .14em; color: var(--c-steel-500); text-transform: uppercase; }

.nav__links { display: flex; align-items: center; gap: 4px; }
.nav__link {
  position: relative; padding: 10px 14px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: 15px; color: var(--c-ink-soft); transition: color var(--t), background var(--t);
}
.nav__link:hover { color: var(--c-blue-600); background: var(--c-bg-soft); }
.nav__link.is-active { color: var(--c-blue-600); }
.nav__link.is-active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 4px; height: 2px;
  background: var(--c-blue-500); border-radius: 2px;
}
.nav__cta { margin-left: 8px; }

.nav__toggle {
  display: none; width: 44px; height: 44px; border: 1px solid var(--c-line);
  border-radius: var(--radius-sm); background: #fff; align-items: center; justify-content: center;
}
.nav__toggle svg { width: 22px; height: 22px; }

/* 移动端菜单 */
@media (max-width: 900px) {
  .nav__toggle { display: inline-flex; }
  .nav__links {
    position: fixed; inset: var(--header-h) 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--c-line);
    padding: 12px 16px 20px; box-shadow: var(--shadow-lg);
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: transform var(--t), opacity var(--t);
  }
  .nav__links.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav__link { padding: 14px 12px; border-radius: var(--radius-sm); }
  .nav__link.is-active::after { display: none; }
  .nav__cta { margin: 10px 0 0; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(46, 139, 214, .25), transparent 60%),
    linear-gradient(160deg, var(--c-navy-900) 0%, var(--c-navy-800) 45%, var(--c-blue-600) 100%);
  color: #eaf1f8;
}
.hero::after {
  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: 48px 48px;
  mask-image: linear-gradient(180deg, #000, transparent 70%);
  pointer-events: none;
}
.hero__inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; padding-block: clamp(64px, 9vw, 120px); }
.hero__eyebrow { color: var(--c-blue-300); }
.hero__eyebrow::before { background: var(--c-blue-300); }
.hero h1 { font-size: clamp(38px, 6vw, 66px); color: #fff; margin-top: 18px; }
.hero h1 .hl { color: var(--c-blue-300); }
.hero__lead { margin-top: 22px; max-width: 52ch; font-size: 18px; color: #c4d4e4; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero__stats { display: flex; flex-wrap: wrap; gap: 28px; margin-top: 44px; }
.hero__stat .num { font-family: var(--font-display); font-size: 34px; font-weight: 700; color: #fff; }
.hero__stat .lbl { font-size: 13px; color: #9fb4c8; letter-spacing: .04em; margin-top: 2px; }

/* Hero 视觉 — 工业插画（纯 SVG/CSS） */
.hero__visual { position: relative; }
.hero__panel {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-lg); padding: 26px; backdrop-filter: blur(4px);
  box-shadow: var(--shadow-lg);
}
.hero__panel h3 { color: #fff; font-size: 18px; letter-spacing: .04em; margin-bottom: 16px; display: flex; align-items: center; gap: 10px; }
.hero__panel h3 .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--c-accent); box-shadow: 0 0 0 4px rgba(245,166,35,.25); }
.spec-row { display: flex; align-items: center; justify-content: space-between; padding: 11px 0; border-bottom: 1px dashed rgba(255,255,255,.14); font-size: 14px; }
.spec-row:last-child { border-bottom: 0; }
.spec-row .k { color: #aebfd0; }
.spec-row .v { color: #fff; font-family: var(--font-display); font-weight: 600; letter-spacing: .02em; }
.spec-bar { height: 7px; border-radius: 99px; background: rgba(255,255,255,.12); margin-top: 18px; overflow: hidden; }
.spec-bar > i { display: block; height: 100%; background: linear-gradient(90deg, var(--c-blue-400), var(--c-blue-300)); border-radius: 99px; }
.float-chip {
  position: absolute; background: #fff; color: var(--c-navy-900); border-radius: 12px;
  padding: 10px 14px; font-family: var(--font-display); font-weight: 700; font-size: 14px;
  box-shadow: var(--shadow-lg); display: flex; align-items: center; gap: 8px;
}
.float-chip svg { width: 18px; height: 18px; color: var(--c-blue-600); }
.float-chip--1 { top: -18px; right: 18px; }
.float-chip--2 { bottom: -16px; left: -10px; }

/* ---------- 卡片网格 ---------- */
.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); }
@media (max-width: 980px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  padding: 28px; box-shadow: var(--shadow-sm); transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--c-blue-300); }

.feature { text-align: left; }
.feature__icon {
  width: 54px; height: 54px; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--c-navy-800), var(--c-blue-500)); color: #fff; margin-bottom: 18px;
}
.feature__icon svg { width: 28px; height: 28px; }
.feature h3 { font-size: 20px; color: var(--c-navy-900); }
.feature p { margin-top: 10px; color: var(--c-ink-soft); font-size: 15px; }

/* ---------- 产品卡 ---------- */
.product {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-sm); transition: transform var(--t), box-shadow var(--t);
  display: flex; flex-direction: column;
}
.product:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.product__media {
  position: relative; aspect-ratio: 16 / 10; display: grid; place-items: center;
  background: linear-gradient(160deg, var(--c-navy-800), var(--c-blue-600)); color: #fff; overflow: hidden;
}
.product__media .grid-bg { position: absolute; inset: 0; background-image:
  linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
  linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 26px 26px; }
.product__media svg { position: relative; width: 84px; height: 84px; opacity: .92; }
.product__tag {
  position: absolute; top: 14px; left: 14px; z-index: 1;
  background: rgba(255,255,255,.92); color: var(--c-navy-900);
  font-family: var(--font-display); font-weight: 700; font-size: 12px; letter-spacing: .08em;
  padding: 5px 10px; border-radius: 999px;
}
.product__body { padding: 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.product__body h3 { font-size: 19px; color: var(--c-navy-900); }
.product__body p { color: var(--c-ink-soft); font-size: 14.5px; }
.product__meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; padding-top: 6px; }
.chip {
  font-size: 12.5px; font-weight: 600; color: var(--c-blue-600);
  background: var(--c-bg-soft); border: 1px solid var(--c-line); padding: 4px 10px; border-radius: 999px;
}

/* ---------- 时间轴 ---------- */
.timeline { display: grid; gap: 0; margin-top: 36px; }
.tl-item { display: grid; grid-template-columns: 120px 1fr; gap: 24px; padding-bottom: 30px; position: relative; }
.tl-item::before { content: ""; position: absolute; left: 60px; top: 8px; bottom: 0; width: 2px; background: var(--c-line); }
.tl-item:last-child::before { display: none; }
.tl-year { font-family: var(--font-display); font-weight: 700; font-size: 22px; color: var(--c-blue-600); text-align: right; }
.tl-dot { position: absolute; left: 55px; top: 6px; width: 12px; height: 12px; border-radius: 50%; background: var(--c-blue-500); box-shadow: 0 0 0 4px #fff, 0 0 0 5px var(--c-line); }
.tl-body h3 { font-size: 18px; color: var(--c-navy-900); }
.tl-body p { margin-top: 6px; color: var(--c-ink-soft); font-size: 15px; }
@media (max-width: 640px) {
  .tl-item { grid-template-columns: 84px 1fr; gap: 16px; }
  .tl-item::before { left: 42px; }
  .tl-dot { left: 37px; }
  .tl-year { font-size: 18px; }
}

/* ---------- 指标条 ---------- */
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.metric { text-align: center; padding: 8px; }
.metric .num { font-family: var(--font-display); font-size: clamp(34px, 5vw, 50px); font-weight: 700; color: var(--c-blue-400); line-height: 1; }
.metric .lbl { margin-top: 10px; color: #b9c7d6; font-size: 14px; letter-spacing: .03em; }
@media (max-width: 720px) { .metrics { grid-template-columns: repeat(2, 1fr); gap: 28px 16px; } }

/* ---------- 分栏区块 (图 + 文) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }
.split__media {
  border-radius: var(--radius-lg); overflow: hidden; min-height: 320px; position: relative;
  background: linear-gradient(160deg, var(--c-navy-800), var(--c-blue-600)); color: #fff; display: grid; place-items: center;
}
.split__media .grid-bg { 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: 30px 30px; }
.split__media svg { position: relative; width: 120px; height: 120px; opacity: .9; }
.split ul.checks { margin-top: 18px; display: grid; gap: 12px; }
.split ul.checks li { display: flex; gap: 12px; align-items: flex-start; color: var(--c-ink-soft); font-size: 15.5px; }
.split ul.checks li .ic { flex: none; width: 22px; height: 22px; color: var(--c-ok); margin-top: 2px; }

/* ---------- 联系表单 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 56px); align-items: start; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }
.form { display: grid; gap: 18px; }
.field { display: grid; gap: 7px; }
.field label { font-weight: 600; font-size: 14px; color: var(--c-navy-900); }
.field label .req { color: #d6453f; }
.field input, .field textarea, .field select {
  font-family: inherit; font-size: 15px; color: var(--c-ink);
  padding: 12px 14px; border: 1.5px solid var(--c-line); border-radius: var(--radius);
  background: #fff; transition: border-color var(--t), box-shadow var(--t); width: 100%;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--c-blue-500); box-shadow: 0 0 0 3px rgba(46,139,214,.15); outline: none; }
.field.has-error input, .field.has-error textarea, .field.has-error select { border-color: #d6453f; }
.field .err { color: #d6453f; font-size: 13px; display: none; }
.field.has-error .err { display: block; }
.form__note { font-size: 13px; color: var(--c-steel-500); }
.form__ok { display: none; padding: 14px 16px; border-radius: var(--radius); background: #e7f6ee; border: 1px solid #b7e3cb; color: #146c46; font-size: 14.5px; }
.form__ok.is-on { display: block; }

.info-list { display: grid; gap: 18px; }
.info-item { display: flex; gap: 14px; align-items: flex-start; }
.info-item .ic { flex: none; width: 42px; height: 42px; border-radius: 10px; background: var(--c-bg-soft); border: 1px solid var(--c-line); display: grid; place-items: center; color: var(--c-blue-600); }
.info-item .ic svg { width: 22px; height: 22px; }
.info-item h4 { font-family: var(--font-body); font-size: 14px; font-weight: 700; color: var(--c-steel-500); letter-spacing: .02em; }
.info-item p { color: var(--c-navy-900); font-size: 16px; font-weight: 600; margin-top: 2px; }
.info-item a:hover { color: var(--c-blue-600); }

/* 地图占位 */
.map {
  margin-top: 22px; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--c-line);
  background: linear-gradient(160deg, #dbe6f0, #eef3f8);
  min-height: 300px; position: relative; color: var(--c-steel-500);
}
.map::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    repeating-linear-gradient(0deg, rgba(255,255,255,.55) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.55) 0 1px, transparent 1px 28px);
}
.map__decor { position: absolute; inset: 0; }
.map__road--h { position: absolute; left: 0; right: 0; top: 58%; height: 12px; background: #c7d3df; }
.map__road--v { position: absolute; top: 0; bottom: 0; left: 30%; width: 12px; background: #c7d3df; }
.map__block { position: absolute; left: 40%; top: 18%; width: 28%; height: 32%; background: rgba(124,160,196,.22); border-radius: 6px; }
.map__marker {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  display: flex; flex-direction: column; align-items: center; z-index: 2;
  width: max-content; max-width: calc(100% - 32px);
}
.map__bubble {
  background: #fff; border: 1px solid var(--c-line); border-radius: 12px;
  padding: 10px 14px; text-align: center; box-shadow: 0 10px 24px rgba(10,31,51,.18);
  margin-bottom: 8px; max-width: 260px;
}
.map__bubble strong { display: block; font-family: var(--font-head); font-size: 15px; color: var(--c-navy-900); }
.map__bubble span { display: block; font-size: 13px; color: var(--c-steel-500); margin-top: 2px; line-height: 1.4; }
.map__pin { position: relative; color: var(--c-blue-600); z-index: 2; }
.map__pin svg { width: 40px; height: 40px; display: block; filter: drop-shadow(0 8px 12px rgba(20,83,143,.35)); }
.map__pulse {
  position: absolute; bottom: 2px; left: 50%; width: 40px; height: 40px; margin-left: -20px;
  border-radius: 50%; background: rgba(20,83,143,.22); z-index: 1;
  animation: mapPulse 2.2s ease-out infinite;
}
@keyframes mapPulse { 0% { transform: scale(.35); opacity: .8; } 100% { transform: scale(2.6); opacity: 0; } }
.map__copy {
  position: absolute; right: 12px; bottom: 12px; z-index: 3;
  background: rgba(255,255,255,.92); border: 1px solid var(--c-line); color: var(--c-blue-600);
  font-size: 13px; font-weight: 600; padding: 7px 12px; border-radius: 999px; cursor: pointer;
  box-shadow: 0 4px 12px rgba(10,31,51,.12); transition: background .2s, color .2s;
}
.map__copy:hover { background: var(--c-blue-600); color: #fff; }
.map__copy.is-ok { background: #1f8a4c; color: #fff; border-color: #1f8a4c; }
@media (max-width: 520px) {
  .map { min-height: 260px; }
  .map__bubble { max-width: 210px; }
}
@media (prefers-reduced-motion: reduce) {
  .map__pulse { animation: none; display: none; }
}

/* 真实地图（高德）容器 + 操作按钮 */
.map__real { position: absolute; inset: 0; z-index: 1; background: #eef3f8; }
.map.has-real .map__decor,
.map.has-real .map__marker,
.map.has-real .map__pulse { display: none; }
.map.has-real { min-height: 420px; }
@media (max-width: 520px) { .map.has-real { min-height: 340px; } }

/* 操作按钮组（左下）：在高德打开 + 一键导航，示意图/真实地图均常驻 */
.map__actions {
  position: absolute; left: 12px; bottom: 12px; z-index: 3;
  display: flex; gap: 8px; flex-wrap: wrap; max-width: calc(100% - 24px);
}
.map__open,
.map__nav {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,.92); border: 1px solid var(--c-line); color: var(--c-blue-600);
  font-size: 13px; font-weight: 600; padding: 7px 12px; border-radius: 999px;
  text-decoration: none; cursor: pointer; box-shadow: 0 4px 12px rgba(10,31,51,.12);
  transition: background .2s, color .2s;
}
.map__open:hover,
.map__nav:hover { background: var(--c-blue-600); color: #fff; }
.map__nav svg { width: 15px; height: 15px; flex: 0 0 auto; }
@media (max-width: 520px) {
  .map__actions { left: 10px; bottom: 10px; gap: 6px; }
  .map__open, .map__nav { font-size: 12px; padding: 6px 10px; }
}

/* ---------- CTA 区块 ---------- */
.cta {
  background:
    radial-gradient(800px 400px at 85% 0%, rgba(46,139,214,.35), transparent 60%),
    linear-gradient(150deg, var(--c-navy-900), var(--c-blue-600));
  color: #fff; border-radius: var(--radius-lg); padding: clamp(36px, 5vw, 60px);
  display: grid; grid-template-columns: 1.4fr auto; gap: 32px; align-items: center;
}
.cta h2 { color: #fff; font-size: clamp(24px, 3.4vw, 36px); }
.cta p { margin-top: 12px; color: #c4d4e4; max-width: 56ch; }
@media (max-width: 760px) { .cta { grid-template-columns: 1fr; } }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--c-navy-900); color: #aebfd0; padding-block: 56px 24px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 32px; }
.footer-grid h4 { font-family: var(--font-body); color: #fff; font-size: 15px; letter-spacing: .04em; margin-bottom: 14px; }
.footer-brand .brand__name { color: #fff; }
.footer-brand p { margin-top: 14px; font-size: 14px; color: #93a6ba; max-width: 36ch; }
.footer-links a { display: block; padding: 6px 0; color: #aebfd0; font-size: 14.5px; transition: color var(--t); }
.footer-links a:hover { color: #fff; }
.footer-contact li { display: flex; gap: 10px; padding: 6px 0; font-size: 14px; color: #aebfd0; align-items: flex-start; }
.footer-contact .ic { width: 18px; height: 18px; flex: none; color: var(--c-blue-300); margin-top: 2px; }
.footer-bottom { margin-top: 40px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: 13px; color: #7d93a9; }
.footer-bottom a:hover { color: #fff; }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }

/* ---------- 回到顶部 ---------- */
.to-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 90;
  width: 46px; height: 46px; border-radius: 12px; border: 0;
  background: var(--c-blue-600); color: #fff; display: grid; place-items: center;
  box-shadow: var(--shadow-lg); opacity: 0; transform: translateY(12px); pointer-events: none;
  transition: opacity var(--t), transform var(--t), background var(--t);
}
.to-top.is-on { opacity: 1; transform: translateY(0); pointer-events: auto; }
.to-top:hover { background: var(--c-blue-500); }
.to-top svg { width: 22px; height: 22px; }

/* ---------- 滚动渐显 ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* ---------- 面包屑 ---------- */
.crumb { padding-block: 18px; font-size: 13.5px; color: var(--c-steel-500); }
.crumb a:hover { color: var(--c-blue-600); }
.crumb span { color: var(--c-ink-soft); }

/* ---------- 页面头图 (内页) ---------- */
.page-hero {
  background:
    radial-gradient(900px 500px at 80% -20%, rgba(46,139,214,.28), transparent 60%),
    linear-gradient(160deg, var(--c-navy-900), var(--c-blue-600));
  color: #fff; padding-block: clamp(48px, 7vw, 84px); position: relative; overflow: hidden;
}
.page-hero::after { 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: 44px 44px; mask-image: linear-gradient(180deg, #000, transparent); }
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { font-size: clamp(32px, 5vw, 54px); color: #fff; margin-top: 14px; }
.page-hero p { margin-top: 14px; color: #c4d4e4; max-width: 60ch; font-size: 17px; }

/* ---------- 工具 ---------- */
.mt-s { margin-top: 16px; } .mt-m { margin-top: 28px; } .mt-l { margin-top: 44px; }
.stack-sm { display: grid; gap: 14px; } .stack { display: grid; gap: 22px; }
.section-head { max-width: 70ch; }
.lede { font-size: 17px; color: var(--c-ink-soft); }