/* ============================================================
   Defu Auto · 中亚/中东/非洲风格国际站
   主色：深海军蓝 + 鎏金；点缀：暖沙色
   ============================================================ */
:root {
  --navy: #0b1d33;
  --navy-2: #081627;
  --navy-3: #10294a;
  --gold: #c6a15b;
  --gold-2: #e3c27e;
  --sand: #f6f1e8;
  --ink: #16212f;
  --muted: #5c6775;
  --line: #e8e2d5;
  --white: #ffffff;
  --radius: 14px;
  --shadow: 0 14px 40px rgba(11, 29, 51, .12);
  --font-head: 'Marcellus', 'Noto Serif SC', serif;
  --font-body: 'Manrope', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 400; line-height: 1.25; }
.container { width: min(1240px, 92%); margin: 0 auto; }
::selection { background: var(--gold); color: var(--navy-2); }

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--navy-2);
  color: rgba(255, 255, 255, .75);
  font-size: 13px;
  border-bottom: 1px solid rgba(198, 161, 91, .25);
}
.topbar .container { display: flex; align-items: center; justify-content: space-between; height: 42px; gap: 16px; }
.topbar .slogan { letter-spacing: .12em; text-transform: uppercase; color: var(--gold-2); font-size: 11.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar .top-right { display: flex; align-items: center; gap: 18px; }
.topbar a:hover { color: var(--gold-2); }
.topbar .tb-item { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.topbar svg { width: 14px; height: 14px; stroke: var(--gold); }
.lang-switch { display: inline-flex; border: 1px solid rgba(198, 161, 91, .5); border-radius: 99px; overflow: hidden; }
.lang-btn {
  background: transparent; border: 0; color: rgba(255, 255, 255, .7);
  font: 600 11px/1 var(--font-body); padding: 5px 12px; cursor: pointer; letter-spacing: .08em;
}
.lang-btn.active { background: var(--gold); color: var(--navy-2); }

/* ---------- 头部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(11, 29, 51, .96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(198, 161, 91, .3);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 78px; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-badge {
  width: 46px; height: 46px; border-radius: 50%;
  border: 2px solid var(--gold);
  display: grid; place-items: center;
  font-family: var(--font-head); font-size: 22px; color: var(--gold-2);
  background: radial-gradient(circle at 30% 25%, var(--navy-3), var(--navy-2));
}
.logo-text { line-height: 1.15; }
.logo-text strong { display: block; font-family: var(--font-head); font-size: 21px; letter-spacing: .14em; color: #fff; font-weight: 400; }
.logo-text span { font-size: 10.5px; letter-spacing: .3em; color: var(--gold-2); text-transform: uppercase; }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav > li { position: relative; }
.main-nav > li > a {
  display: block; padding: 10px 18px; color: rgba(255, 255, 255, .85);
  font-size: 15px; font-weight: 600; letter-spacing: .04em; position: relative;
}
.main-nav > li > a::after {
  content: ''; position: absolute; left: 18px; right: 18px; bottom: 4px;
  height: 2px; background: var(--gold); transform: scaleX(0); transform-origin: left; transition: .3s;
}
.main-nav > li > a:hover, .main-nav > li.active > a { color: var(--gold-2); }
.main-nav > li > a:hover::after, .main-nav > li.active > a::after { transform: scaleX(1); }
.has-sub .sub-arrow { display: inline-block; margin-left: 6px; font-size: 10px; transition: .3s; }
.sub-menu {
  position: absolute; top: calc(100% + 10px); left: 0; min-width: 210px;
  background: #fff; border-radius: 10px; box-shadow: var(--shadow);
  padding: 8px; opacity: 0; visibility: hidden; transform: translateY(8px); transition: .25s;
  border-top: 3px solid var(--gold);
}
.has-sub:hover .sub-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.sub-menu a { display: block; padding: 10px 14px; color: var(--ink); font-size: 14px; font-weight: 600; border-radius: 8px; }
.sub-menu a:hover { background: var(--sand); color: var(--gold); padding-left: 20px; }
.nav-cta {
  margin-left: 14px; padding: 11px 22px !important; border-radius: 99px;
  background: linear-gradient(120deg, var(--gold), var(--gold-2));
  color: var(--navy-2) !important; font-size: 14px;
}
.nav-cta::after { display: none; }
.nav-cta:hover { filter: brightness(1.08); }
.menu-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.menu-toggle span { display: block; width: 26px; height: 2px; background: var(--gold-2); margin: 6px 0; transition: .3s; }

/* ---------- 首页英雄轮播 ---------- */
.hero { position: relative; height: clamp(520px, 82vh, 780px); overflow: hidden; background: var(--navy-2); }
.hero-slide {
  position: absolute; inset: 0; opacity: 0; transition: opacity 1s ease;
  display: flex; align-items: center;
}
.hero-slide.active { opacity: 1; }
.hero-slide .bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  transform: scale(1.06); transition: transform 7s ease;
}
.hero-slide.active .bg { transform: scale(1); }
.hero-slide .bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(8, 22, 39, .92) 8%, rgba(8, 22, 39, .55) 46%, rgba(8, 22, 39, .15) 75%);
}
.hero-content { position: relative; z-index: 2; color: #fff; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 10px; color: var(--gold-2);
  letter-spacing: .22em; text-transform: uppercase; font-size: 13px; font-weight: 700; margin-bottom: 18px;
}
.hero-tag::before { content: ''; width: 44px; height: 1px; background: var(--gold); }
.hero-content h1 { font-size: clamp(40px, 6vw, 76px); letter-spacing: .06em; line-height: 1.08; margin-bottom: 20px; }
.hero-content p { max-width: 560px; font-size: 16.5px; color: rgba(255, 255, 255, .82); margin-bottom: 34px; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 14px 30px; border-radius: 99px;
  font: 700 14.5px/1 var(--font-body); letter-spacing: .05em; cursor: pointer; border: 0; transition: .3s;
}
.btn-gold { background: linear-gradient(120deg, var(--gold), var(--gold-2)); color: var(--navy-2); box-shadow: 0 10px 26px rgba(198, 161, 91, .4); }
.btn-gold:hover { transform: translateY(-2px); filter: brightness(1.06); }
.btn-ghost { border: 1.5px solid rgba(255, 255, 255, .55); color: #fff; background: transparent; }
.btn-ghost:hover { border-color: var(--gold-2); color: var(--gold-2); }
.btn-dark { background: var(--navy); color: #fff; }
.btn-dark:hover { background: var(--navy-3); transform: translateY(-2px); }
.hero-dots { position: absolute; z-index: 3; bottom: 28px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; }
.hero-dots button { width: 34px; height: 4px; border: 0; border-radius: 4px; background: rgba(255, 255, 255, .3); cursor: pointer; transition: .3s; }
.hero-dots button.active { background: var(--gold); }
.hero-arrow {
  position: absolute; z-index: 3; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, .35);
  background: rgba(8, 22, 39, .35); color: #fff; font-size: 20px; cursor: pointer; transition: .3s;
}
.hero-arrow:hover { background: var(--gold); border-color: var(--gold); color: var(--navy-2); }
.hero-arrow.prev { left: 26px; } .hero-arrow.next { right: 26px; }

/* ---------- 通用区块 ---------- */
.section { padding: 92px 0; }
.section.sand { background: var(--sand); }
.section.dark { background: var(--navy); color: #fff; position: relative; overflow: hidden; }
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.kicker {
  display: inline-flex; align-items: center; gap: 12px; color: var(--gold);
  letter-spacing: .26em; text-transform: uppercase; font-size: 12.5px; font-weight: 800; margin-bottom: 12px;
}
.kicker::before, .kicker::after { content: ''; width: 34px; height: 1px; background: var(--gold); }
.sec-head h2 { font-size: clamp(30px, 4vw, 44px); letter-spacing: .04em; }
.sec-head p { color: var(--muted); margin-top: 14px; font-size: 16px; }
.section.dark .sec-head p { color: rgba(255, 255, 255, .65); }

/* 几何花纹背景（中亚/中东纹样） */
.pattern-bg::before {
  content: ''; position: absolute; inset: 0; opacity: .06; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='96' height='96' viewBox='0 0 96 96'%3E%3Cg fill='none' stroke='%23c6a15b' stroke-width='1'%3E%3Cpath d='M48 4 58 34 92 48 58 62 48 92 38 62 4 48 38 34Z'/%3E%3Ccircle cx='48' cy='48' r='10'/%3E%3C/g%3E%3C/svg%3E");
}

/* ---------- 车辆卡片 ---------- */
.car-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 26px; }
.car-card {
  background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: 0 8px 26px rgba(11, 29, 51, .08);
  border: 1px solid var(--line); transition: .35s; display: flex; flex-direction: column; position: relative;
}
.car-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: var(--gold); }
.car-media { position: relative; aspect-ratio: 4/3; overflow: hidden; background: var(--navy-2); }
.car-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.car-card:hover .car-media img { transform: scale(1.07); }
.badge-new {
  position: absolute; top: 14px; left: 14px; z-index: 2;
  background: linear-gradient(120deg, var(--gold), var(--gold-2)); color: var(--navy-2);
  font: 800 11px/1 var(--font-body); letter-spacing: .12em; padding: 7px 12px; border-radius: 6px;
}
.brand-tag {
  position: absolute; top: 14px; right: 14px; z-index: 2;
  background: rgba(8, 22, 39, .72); color: var(--gold-2); backdrop-filter: blur(4px);
  font: 700 11.5px/1 var(--font-body); letter-spacing: .1em; padding: 7px 12px; border-radius: 99px;
  border: 1px solid rgba(198, 161, 91, .5);
}
.car-body { padding: 22px 22px 24px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.car-name { font-size: 22px; letter-spacing: .03em; }
.car-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-size: 12px; font-weight: 700; color: var(--muted); background: var(--sand);
  border: 1px solid var(--line); padding: 5px 11px; border-radius: 99px;
}
.car-foot { margin-top: auto; display: flex; align-items: flex-end; justify-content: space-between; gap: 10px; padding-top: 12px; border-top: 1px dashed var(--line); }
.car-price small { display: block; font-size: 11px; letter-spacing: .1em; color: var(--muted); text-transform: uppercase; }
.car-price strong { font-family: var(--font-head); font-size: 24px; color: var(--gold); letter-spacing: .02em; }
.car-link {
  display: inline-flex; align-items: center; gap: 8px; font: 700 13.5px/1 var(--font-body);
  color: var(--navy); letter-spacing: .06em; transition: .3s;
}
.car-link i { font-style: normal; transition: transform .3s; }
.car-card:hover .car-link { color: var(--gold); }
.car-card:hover .car-link i { transform: translateX(5px); }

/* 首页横向滚动条 */
.car-scroller-wrap { position: relative; }
.car-scroller {
  display: grid; grid-auto-flow: column; grid-auto-columns: minmax(320px, 360px);
  gap: 24px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 6px 4px 22px;
  scrollbar-width: none;
}
.car-scroller::-webkit-scrollbar { display: none; }
.car-scroller > * { scroll-snap-align: start; }
.scroller-btn {
  position: absolute; top: 42%; width: 50px; height: 50px; border-radius: 50%; z-index: 3;
  background: var(--navy); color: var(--gold-2); border: 1px solid rgba(198, 161, 91, .6);
  font-size: 18px; cursor: pointer; transition: .3s; box-shadow: var(--shadow);
}
.scroller-btn:hover { background: var(--gold); color: var(--navy-2); }
.scroller-btn.left { left: -14px; } .scroller-btn.right { right: -14px; }

/* ---------- 欢迎文案区 ---------- */
.welcome-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; }
.welcome-text h2 { font-size: clamp(28px, 3.6vw, 40px); margin-bottom: 20px; letter-spacing: .03em; }
.welcome-text p { color: var(--muted); font-size: 16.5px; margin-bottom: 26px; }
.welcome-points { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 22px; margin-bottom: 32px; }
.welcome-points li { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 14.5px; }
.welcome-points li::before {
  content: ''; width: 22px; height: 22px; flex: none; border-radius: 50%;
  background: var(--sand) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23c6a15b' stroke-width='3'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E") center/12px no-repeat;
  border: 1px solid var(--gold);
}
.welcome-media { position: relative; }
.welcome-media img { border-radius: var(--radius); box-shadow: var(--shadow); }
.welcome-media::after {
  content: ''; position: absolute; inset: 18px -18px -18px 18px; z-index: -1;
  border: 2px solid var(--gold); border-radius: var(--radius); opacity: .5;
}

/* ---------- 优势区（深色鎏金） ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; position: relative; z-index: 1; }
.adv-card {
  background: rgba(255, 255, 255, .045); border: 1px solid rgba(198, 161, 91, .28);
  border-radius: var(--radius); padding: 34px 26px 30px; transition: .35s; position: relative; overflow: hidden;
}
.adv-card::before {
  content: attr(data-no); position: absolute; top: 12px; right: 18px;
  font-family: var(--font-head); font-size: 52px; color: rgba(198, 161, 91, .16); line-height: 1;
}
.adv-card:hover { background: rgba(198, 161, 91, .1); border-color: var(--gold); transform: translateY(-6px); }
.adv-icon {
  width: 60px; height: 60px; border-radius: 16px; margin-bottom: 20px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(198, 161, 91, .22), rgba(198, 161, 91, .05));
  border: 1px solid rgba(198, 161, 91, .45);
}
.adv-icon svg { width: 30px; height: 30px; stroke: var(--gold-2); fill: none; stroke-width: 1.6; }
.adv-card h3 { color: var(--gold-2); font-size: 21px; margin-bottom: 12px; letter-spacing: .04em; }
.adv-card p { color: rgba(255, 255, 255, .72); font-size: 14.5px; }

/* 数据统计条 */
.stats-bar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 64px; position: relative; z-index: 1; }
.stat-item { text-align: center; padding: 26px 10px; border-radius: var(--radius); border: 1px solid rgba(198, 161, 91, .25); background: rgba(255, 255, 255, .03); }
.stat-item b { display: block; font-family: var(--font-head); font-size: clamp(34px, 4vw, 48px); color: var(--gold-2); font-weight: 400; }
.stat-item span { font-size: 13px; letter-spacing: .16em; text-transform: uppercase; color: rgba(255, 255, 255, .6); }

/* ---------- 品牌矩阵 ---------- */
.brand-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.brand-cell {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 12px; text-align: center; transition: .3s; cursor: pointer;
}
.brand-cell:hover { border-color: var(--gold); box-shadow: var(--shadow); transform: translateY(-5px); }
.brand-cell .b-logo {
  width: 58px; height: 58px; margin: 0 auto 14px; border-radius: 50%;
  display: grid; place-items: center; background: var(--navy);
  font-family: var(--font-head); color: var(--gold-2); font-size: 22px;
  border: 1.5px solid var(--gold);
}
.brand-cell b { display: block; font-size: 15.5px; letter-spacing: .05em; }
.brand-cell small { color: var(--muted); font-size: 12px; }

/* ---------- CTA 横幅 ---------- */
.cta-banner { position: relative; border-radius: 20px; overflow: hidden; padding: 70px 60px; background: var(--navy-2); color: #fff; }
.cta-banner .bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: .35; }
.cta-banner .inner { position: relative; z-index: 2; max-width: 620px; }
.cta-banner h2 { font-size: clamp(26px, 3.4vw, 40px); margin-bottom: 14px; letter-spacing: .03em; }
.cta-banner p { color: rgba(255, 255, 255, .8); margin-bottom: 28px; }

/* ---------- 内页头部 ---------- */
.page-hero { position: relative; padding: 110px 0 84px; background: var(--navy); color: #fff; overflow: hidden; }
.page-hero .bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: .22; }
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(34px, 4.6vw, 52px); letter-spacing: .05em; margin: 10px 0 12px; }
.page-hero p { max-width: 640px; color: rgba(255, 255, 255, .78); }
.crumbs { font-size: 13px; letter-spacing: .1em; text-transform: uppercase; color: var(--gold-2); }
.crumbs a:hover { text-decoration: underline; }

/* ---------- 车型页筛选 ---------- */
.brand-tabs { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 44px; }
.brand-tab {
  padding: 11px 24px; border-radius: 99px; border: 1.5px solid var(--line); background: #fff;
  font: 700 14px/1 var(--font-body); color: var(--muted); cursor: pointer; transition: .3s; letter-spacing: .04em;
}
.brand-tab:hover { border-color: var(--gold); color: var(--gold); }
.brand-tab.active { background: var(--navy); border-color: var(--navy); color: var(--gold-2); }
.cars-count { text-align: center; color: var(--muted); font-size: 13.5px; margin: -26px 0 30px; letter-spacing: .06em; }
.cars-count b { color: var(--gold); }

/* ---------- 详情页 ---------- */
.detail-hero { display: grid; grid-template-columns: 1.15fr .85fr; gap: 46px; align-items: start; }
.gallery .main-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); aspect-ratio: 16/10; background: var(--navy-2); }
.gallery .main-img img { width: 100%; height: 100%; object-fit: cover; }
.thumbs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 12px; }
.thumbs img { aspect-ratio: 4/3; object-fit: cover; border-radius: 10px; cursor: pointer; border: 2px solid transparent; transition: .3s; background: var(--navy-2); }
.thumbs img.active, .thumbs img:hover { border-color: var(--gold); }
.detail-info .brand-tag { position: static; display: inline-block; margin-bottom: 14px; }
.detail-info h1 { font-size: clamp(30px, 4vw, 44px); margin-bottom: 10px; }
.detail-tagline { color: var(--muted); font-size: 16.5px; margin-bottom: 20px; }
.detail-price { display: flex; align-items: baseline; gap: 10px; padding: 18px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-bottom: 22px; }
.detail-price b { font-family: var(--font-head); font-size: 40px; color: var(--gold); font-weight: 400; }
.detail-price small { color: var(--muted); text-transform: uppercase; letter-spacing: .12em; font-size: 12px; }
.detail-desc { color: var(--muted); margin-bottom: 26px; }
.detail-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.spec-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: 0 8px 26px rgba(11, 29, 51, .08); }
.spec-table th, .spec-table td { padding: 16px 24px; text-align: left; border-bottom: 1px solid var(--line); font-size: 15px; }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
.spec-table th { width: 38%; color: var(--muted); font-weight: 700; background: var(--sand); letter-spacing: .03em; }
.highlight-list { display: grid; gap: 14px; }
.highlight-list li { display: flex; gap: 12px; align-items: flex-start; background: var(--sand); border: 1px solid var(--line); padding: 16px 20px; border-radius: 12px; font-weight: 600; }
.highlight-list li::before {
  content: ''; width: 24px; height: 24px; flex: none; margin-top: 2px; border-radius: 50%;
  background: var(--navy) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23e3c27e' stroke-width='3'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E") center/13px no-repeat;
}

/* ---------- 关于我们 ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-grid img { border-radius: var(--radius); box-shadow: var(--shadow); }
.about-block { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 38px 40px; box-shadow: 0 8px 26px rgba(11, 29, 51, .06); }
.about-block h2 { font-size: 28px; margin-bottom: 20px; display: flex; align-items: center; gap: 14px; }
.about-block h2::before { content: ''; width: 6px; height: 26px; background: linear-gradient(var(--gold), var(--gold-2)); border-radius: 4px; }
.about-block li { padding: 13px 0 13px 30px; border-bottom: 1px dashed var(--line); position: relative; color: var(--muted); font-size: 15.5px; }
.about-block li:last-child { border-bottom: 0; }
.about-block li::before {
  content: ''; position: absolute; left: 0; top: 19px; width: 16px; height: 16px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23c6a15b'%3E%3Cpath d='M12 2l3 7h7l-5.6 4.4L18.5 21 12 16.6 5.5 21l2.1-7.6L2 9h7z'/%3E%3C/svg%3E") center/contain no-repeat;
}
.hub-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.hub-card { background: #fff; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); transition: .35s; }
.hub-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--gold); }
.hub-card .hub-img { aspect-ratio: 16/10; overflow: hidden; }
.hub-card .hub-img img { width: 100%; height: 100%; object-fit: cover; transition: .5s; }
.hub-card:hover .hub-img img { transform: scale(1.06); }
.hub-card .hub-body { padding: 20px 22px 24px; }
.hub-card h3 { font-size: 20px; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.hub-card h3 svg { width: 16px; height: 16px; stroke: var(--gold); fill: none; stroke-width: 2; }
.hub-card p { color: var(--muted); font-size: 14px; }
.about-nav-chips { display: flex; gap: 12px; justify-content: center; margin-top: -30px; position: relative; z-index: 5; }
.about-nav-chips a {
  background: #fff; border: 1px solid var(--line); border-radius: 99px; padding: 12px 26px;
  font: 700 14px/1 var(--font-body); box-shadow: 0 8px 26px rgba(11, 29, 51, .1); transition: .3s;
}
.about-nav-chips a:hover, .about-nav-chips a.active { background: var(--navy); color: var(--gold-2); border-color: var(--navy); }

/* ---------- 操作指南时间轴 ---------- */
.timeline { position: relative; max-width: 880px; margin: 0 auto; }
.timeline::before { content: ''; position: absolute; left: 34px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(var(--gold), var(--line)); }
.tl-item { position: relative; padding: 0 0 34px 96px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-no {
  position: absolute; left: 8px; top: 0; width: 54px; height: 54px; border-radius: 50%;
  background: var(--navy); border: 2px solid var(--gold); color: var(--gold-2);
  display: grid; place-items: center; font-family: var(--font-head); font-size: 21px; z-index: 2;
}
.tl-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 28px; transition: .3s; }
.tl-item:hover .tl-card { border-color: var(--gold); box-shadow: var(--shadow); transform: translateX(6px); }
.tl-card h3 { font-size: 20px; margin-bottom: 8px; }
.tl-card p { color: var(--muted); font-size: 15px; }

/* ---------- FAQ 手风琴 ---------- */
.faq-list { max-width: 880px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 12px; margin-bottom: 14px; overflow: hidden; transition: .3s; }
.faq-item.open { border-color: var(--gold); box-shadow: 0 10px 30px rgba(11, 29, 51, .1); }
.faq-q {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 20px 26px; background: none; border: 0; cursor: pointer; text-align: left;
  font: 700 16px/1.5 var(--font-body); color: var(--ink);
}
.faq-q .fq-ico {
  flex: none; width: 30px; height: 30px; border-radius: 50%; border: 1.5px solid var(--gold);
  color: var(--gold); display: grid; place-items: center; font-size: 18px; font-weight: 400; transition: .3s;
}
.faq-item.open .fq-ico { background: var(--gold); color: var(--navy-2); transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-a p { padding: 0 26px 22px; color: var(--muted); font-size: 15px; }

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: start; }
.contact-form { background: #fff; border-radius: var(--radius); border: 1px solid var(--line); padding: 40px; box-shadow: 0 8px 26px rgba(11, 29, 51, .06); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font: 700 13px/1 var(--font-body); margin-bottom: 8px; letter-spacing: .05em; color: var(--navy); }
.form-group input, .form-group textarea {
  width: 100%; padding: 13px 16px; border: 1.5px solid var(--line); border-radius: 10px;
  font: 500 15px/1.5 var(--font-body); background: #fbfaf7; transition: .3s; color: var(--ink);
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--gold); background: #fff; box-shadow: 0 0 0 4px rgba(198, 161, 91, .15); }
.form-group textarea { min-height: 130px; resize: vertical; }
.form-tip { font-size: 12.5px; color: var(--muted); margin-top: 14px; }
.contact-info-card { background: var(--navy); border-radius: var(--radius); color: #fff; padding: 38px 36px; position: relative; overflow: hidden; }
.contact-info-card h2 { font-size: 26px; margin-bottom: 24px; color: var(--gold-2); }
.ci-item { display: flex; gap: 16px; padding: 15px 0; border-bottom: 1px solid rgba(198, 161, 91, .2); position: relative; z-index: 1; }
.ci-item:last-child { border-bottom: 0; }
.ci-ico {
  flex: none; width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  background: rgba(198, 161, 91, .14); border: 1px solid rgba(198, 161, 91, .4);
}
.ci-ico svg { width: 20px; height: 20px; stroke: var(--gold-2); fill: none; stroke-width: 1.8; }
.ci-item b { display: block; font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--gold-2); margin-bottom: 3px; }
.ci-item span { font-size: 14.5px; color: rgba(255, 255, 255, .85); }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--navy-2); color: rgba(255, 255, 255, .7); position: relative; overflow: hidden; }
.footer-main { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding: 72px 0 48px; position: relative; z-index: 1; }
.footer-main h4 { color: #fff; font-size: 18px; letter-spacing: .08em; margin-bottom: 20px; position: relative; padding-bottom: 12px; }
.footer-main h4::after { content: ''; position: absolute; left: 0; bottom: 0; width: 34px; height: 2px; background: var(--gold); }
.footer-main p, .footer-main li { font-size: 14px; }
.footer-main ul li { margin-bottom: 10px; }
.footer-main ul a:hover { color: var(--gold-2); padding-left: 6px; transition: .25s; }
.footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact svg { flex: none; width: 15px; height: 15px; stroke: var(--gold); fill: none; stroke-width: 2; margin-top: 4px; }
.footer-bottom { border-top: 1px solid rgba(198, 161, 91, .2); padding: 20px 0; font-size: 13px; position: relative; z-index: 1; }
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.footer-bottom .gold { color: var(--gold-2); }

/* ---------- 返回顶部 & 动效 ---------- */
.to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 90; width: 48px; height: 48px; border-radius: 50%;
  background: var(--navy); color: var(--gold-2); border: 1px solid var(--gold); font-size: 18px; cursor: pointer;
  opacity: 0; visibility: hidden; transition: .3s; box-shadow: var(--shadow);
}
.to-top.show { opacity: 1; visibility: visible; }
.to-top:hover { background: var(--gold); color: var(--navy-2); }
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .adv-grid, .hub-grid { grid-template-columns: repeat(2, 1fr); }
  .brand-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .welcome-grid, .about-grid, .detail-hero, .contact-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .topbar .slogan { display: none; }
  .topbar .container { justify-content: center; }
  .menu-toggle { display: block; }
  .main-nav {
    position: fixed; inset: 120px 0 auto 0; z-index: 99; flex-direction: column; align-items: stretch;
    background: var(--navy-2); padding: 18px 5%; gap: 2px; border-top: 1px solid rgba(198, 161, 91, .3);
    transform: translateY(-140%); transition: .35s; max-height: calc(100vh - 120px); overflow: auto;
  }
  .main-nav.open { transform: none; }
  .main-nav > li > a { padding: 14px 10px; border-bottom: 1px solid rgba(255, 255, 255, .06); }
  .sub-menu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; background: rgba(255, 255, 255, .05); margin: 4px 0 8px; }
  .sub-menu a { color: rgba(255, 255, 255, .75); }
  .nav-cta { margin: 12px 0 4px; text-align: center; }
  .hero-arrow { display: none; }
  .hero-content h1 { font-size: 38px; }
  .section { padding: 64px 0; }
  .adv-grid, .brand-grid, .hub-grid, .stats-bar, .form-row, .footer-main { grid-template-columns: 1fr; }
  .welcome-points { grid-template-columns: 1fr; }
  .cta-banner { padding: 44px 26px; }
  .scroller-btn { display: none; }
  .timeline::before { left: 25px; }
  .tl-item { padding-left: 74px; }
  .tl-no { width: 44px; height: 44px; font-size: 17px; left: 2px; }
  .contact-form { padding: 26px 20px; }
  .footer-bottom .container { justify-content: center; text-align: center; }
}