/* ===================================================
   风火跃动 · 锻造铝合金轮毂网站样式表
   基于风火跃动参考设计 · Premium Dark Theme
   =================================================== */

/* ── CSS变量 ── */
:root {
  --dark: #0d0d0f;
  --dark2: #161618;
  --dark3: #1e1e22;
  --border: rgba(255,255,255,0.08);
  --border2: rgba(255,255,255,0.12);
  --gold: #c9a84c;
  --gold2: #e8c97a;
  --red: #e84040;
  --white: #ffffff;
  --gray: #9e9ea7;
  --gray2: #6b6b73;
  --green: #4caf50;
  --font: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --transition: 0.3s ease;
}

/* ── 基础重置 ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--dark);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ── 滚动条 ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark2); }
::-webkit-scrollbar-thumb { background: var(--gold); border-radius: 3px; }

/* ── 容器 ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ── 滚动进度条 ── */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--red));
  z-index: 9999; width: 0%; transition: width 0.1s;
}

/* ── 导航 ── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(13,13,15,0.92); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 20px; height: 64px;
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.logo { font-size: 1.3rem; font-weight: 800; letter-spacing: -0.5px; }
.logo span { color: var(--gold); }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
  font-size: 0.9rem; color: rgba(255,255,255,0.75);
  transition: color var(--transition); padding: 4px 0;
  position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--white); }
.nav-links a.active::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0;
  height: 2px; background: var(--gold); border-radius: 1px;
}
.nav-toggle { display: none; background: none; border: none; color: white; font-size: 1.5rem; }

/* ── 主内容偏移 ── */
main { padding-top: 64px; }

/* ── Hero区 ── */
.hero {
  position: relative; min-height: calc(100vh - 120px);
  display: flex; align-items: center; justify-content: center;
  padding: 80px 20px 60px; text-align: center;
  overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 40%, rgba(201,168,76,0.08), transparent),
              radial-gradient(ellipse 60% 80% at 20% 80%, rgba(201,168,76,0.04), transparent);
  pointer-events: none;
}
.hero-geo {
  position: absolute; inset: 0; opacity: 0.03;
  background-image: repeating-linear-gradient(0deg, white 0, white 1px, transparent 1px, transparent 80px),
                    repeating-linear-gradient(90deg, white 0, white 1px, transparent 1px, transparent 80px);
}
.hero-badge {
  display: inline-block; background: rgba(201,168,76,0.15);
  border: 1px solid rgba(201,168,76,0.3); border-radius: 20px;
  padding: 6px 16px; font-size: 0.82rem; color: var(--gold); margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.2;
  margin-bottom: 20px; letter-spacing: -1px;
}
.hero h1 span { color: var(--gold); }
.hero-sub {
  font-size: 1.05rem; color: rgba(255,255,255,0.7);
  margin-bottom: 24px; line-height: 1.8;
}
.hero-sub strong { color: var(--gold); }
.hero-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 32px; }
.btn-primary {
  background: var(--gold); color: #000; border: none;
  padding: 14px 32px; border-radius: 8px; font-size: 1rem; font-weight: 700;
  transition: all var(--transition); display: inline-flex; align-items: center; gap: 6px;
}
.btn-primary:hover { background: var(--gold2); transform: translateY(-1px); }
.btn-outline {
  background: transparent; color: var(--white); border: 1px solid var(--border2);
  padding: 14px 28px; border-radius: 8px; font-size: 1rem;
  transition: all var(--transition); display: inline-flex; align-items: center; gap: 6px;
}
.btn-outline:hover { border-color: var(--gold); color: var(--gold); }
.hero-stats {
  display: flex; justify-content: center; gap: 0; flex-wrap: wrap;
  margin-bottom: 24px;
}
.hero-stat { text-align: center; padding: 16px 28px; }
.stat-num { font-size: 2rem; font-weight: 800; color: var(--gold); }
.stat-label { display: block; font-size: 0.8rem; color: var(--gray); margin-top: 2px; }
.hero-stat-divider { width: 1px; background: var(--border); }
.hero-trust {
  display: flex; justify-content: center; gap: 16px; flex-wrap: wrap;
}
.trust-tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.82rem; color: rgba(255,255,255,0.6);
}
.trust-tag::before { content: '✓'; color: var(--gold); }

/* ── 通用section ── */
section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; margin-bottom: 10px; }
.section-header p { color: var(--gray); font-size: 1rem; }

/* ── 品牌亮点 ── */
.brand-highlights {
  background: var(--dark2); padding: 48px 0;
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.highlights-row {
  max-width: 1200px; margin: 0 auto; padding: 0 20px;
  display: flex; gap: 0; justify-content: space-around; flex-wrap: wrap;
}
.highlight-item { display: flex; align-items: center; gap: 14px; padding: 12px 20px; }
.highlight-icon { font-size: 1.8rem; }
.highlight-title { font-weight: 700; font-size: 0.95rem; }
.highlight-sub { font-size: 0.78rem; color: var(--gray); }
.highlight-divider { width: 1px; background: var(--border); align-self: stretch; }

/* ── 核心卖点 ── */
.features-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px;
}
.feature-card {
  background: var(--dark2); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 24px; text-align: center; transition: all var(--transition);
}
.feature-card:hover { border-color: rgba(201,168,76,0.3); transform: translateY(-2px); }
.feature-icon { font-size: 2.5rem; margin-bottom: 14px; }
.feature-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.feature-card p { font-size: 0.88rem; color: var(--gray); }

/* ── 产品网格（每行5个） ── */
.products-grid {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px;
}
@media (max-width: 1100px) {
  .products-grid { grid-template-columns: repeat(4, 1fr); gap: 10px; }
}
@media (max-width: 800px) {
  .products-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
}
@media (max-width: 600px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
}
.product-card {
  background: var(--dark2); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; cursor: pointer; transition: all var(--transition);
  position: relative;
}
.product-card:hover { border-color: rgba(201,168,76,0.4); transform: translateY(-2px); }
.product-card img {
  width: 100%; aspect-ratio: 1; object-fit: cover;
  background: var(--dark3); transition: transform var(--transition);
}
.product-card:hover img { transform: scale(1.03); }
.product-card-body { padding: 10px 12px; }
.product-card h3 { font-size: 0.82rem; margin-bottom: 3px; }
.product-card p { font-size: 0.72rem; color: var(--gray); margin-bottom: 6px; line-height: 1.3; }
.product-price { color: var(--gold); font-weight: 600; font-size: 0.82rem; }
.video-badge, .hot-badge, .new-badge {
  position: absolute; top: 10px; font-size: 0.72rem; padding: 3px 8px;
  border-radius: 4px; font-weight: 600;
}
.video-badge { left: 10px; background: var(--red); color: white; }
.hot-badge { right: 10px; background: var(--gold); color: #000; }
.new-badge { right: 10px; top: 10px; background: #2563eb; color: white; }

/* ── 价格提示徽章（竞品优化：引导询价转化）── */
.price-hint-badge {
  position: absolute; bottom: 54px; right: 10px;
  font-size: 0.68rem; padding: 2px 7px;
  border-radius: 4px; font-weight: 600;
  background: rgba(201,168,76,0.18);
  border: 1px solid rgba(201,168,76,0.4);
  color: var(--gold);
  backdrop-filter: blur(4px);
}
.price-hint-badge.new-badge {
  background: rgba(37,99,235,0.18);
  border-color: rgba(37,99,235,0.4);
  color: #60a5fa;
  bottom: 54px; right: 10px; left: auto;
}

/* ── 系列分类导航卡片（竞品优化：参考SKYCHN四大系列入口）── */
.series-nav-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  margin-bottom: 28px;
}
.series-nav-card {
  display: block;
  background: var(--dark2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 12px;
  text-align: center;
  text-decoration: none;
  transition: all 0.25s ease;
  cursor: pointer;
}
.series-nav-card:hover {
  border-color: var(--gold);
  background: rgba(201,168,76,0.06);
  transform: translateY(-2px);
}
.series-nav-card--special {
  border-style: dashed;
  border-color: rgba(201,168,76,0.35);
}
.series-nav-icon {
  font-size: 1.4rem;
  line-height: 1;
  margin-bottom: 8px;
  color: var(--gold);
}
.series-nav-name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}
.series-nav-sub {
  font-size: 0.7rem;
  color: var(--gray2);
  line-height: 1.5;
  margin-bottom: 8px;
}
.series-nav-sub span {
  font-size: 0.62rem;
  color: rgba(158,158,167,0.6);
  display: block;
}
.series-nav-count {
  font-size: 0.72rem;
  color: var(--gold);
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* ── 案例CTA条（竞品优化：增加社会证明 + 强化转化路径）── */
.case-cta-strip {
  padding: 40px 0;
  background: var(--dark2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.case-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.case-cta-reviews {
  display: flex;
  gap: 20px;
  flex: 1;
  min-width: 0;
}
.review-item {
  flex: 1;
  min-width: 0;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}
.review-stars {
  color: var(--gold);
  font-size: 0.8rem;
  letter-spacing: 2px;
  margin-bottom: 6px;
}
.review-text {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.75);
  line-height: 1.5;
  margin-bottom: 8px;
  font-style: italic;
}
.review-author {
  font-size: 0.72rem;
  color: var(--gray2);
}
.case-cta-action {
  text-align: center;
  min-width: 200px;
}
.case-cta-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

/* ── 装车案例 ── */
.cases-strip { overflow: hidden; }
.cases-strip-inner {
  display: flex; gap: 12px; overflow-x: auto; padding: 0 20px;
  scrollbar-width: none; -ms-overflow-style: none;
  cursor: grab;
}
.cases-strip-inner::-webkit-scrollbar { display: none; }
.cases-strip-inner:active { cursor: grabbing; }
.case-strip-item {
  flex-shrink: 0; width: 260px; position: relative; border-radius: 8px; overflow: hidden;
}
.case-strip-item img {
  width: 260px; height: 170px; object-fit: cover; display: block;
  filter: grayscale(30%); transition: all var(--transition);
}
.case-strip-item:hover img { filter: grayscale(0); transform: scale(1.02); }
.case-strip-label {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.85));
  padding: 24px 10px 10px; font-size: 0.78rem; color: rgba(255,255,255,0.9);
}

/* ── 热门车型适配快速入口（参考中赞锻造按车型品牌分类） ── */
.vehicle-fit-section {
  padding: 80px 0;
  background: var(--dark);
}
.vehicle-fit-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
  margin-top: 2.5rem;
}
.vehicle-fit-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1.8rem 1rem 1.5rem;
  background: var(--dark2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.3s ease;
  text-decoration: none;
  cursor: pointer;
}
.vehicle-fit-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(201,168,76,0.1);
}
.vehicle-fit-logo {
  font-size: 2rem;
  margin-bottom: 0.8rem;
}
.vehicle-fit-brand {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.3rem;
}
.vehicle-fit-models {
  font-size: 0.7rem;
  color: var(--gray);
  line-height: 1.5;
  margin-bottom: 0.6rem;
}
.vehicle-fit-count {
  font-size: 0.68rem;
  color: var(--gold);
  font-weight: 600;
  letter-spacing: 0.04em;
  background: rgba(201,168,76,0.1);
  padding: 3px 10px;
  border-radius: 10px;
}
@media (max-width: 900px) {
  .vehicle-fit-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 500px) {
  .vehicle-fit-grid { grid-template-columns: repeat(2, 1fr); }
  .vehicle-fit-section { padding: 50px 0; }
}

/* ── CTA ── */
.cta-section {
  background: linear-gradient(135deg, rgba(201,168,76,0.1), var(--dark));
  border-top: 1px solid rgba(201,168,76,0.2); border-bottom: 1px solid rgba(201,168,76,0.2);
  text-align: center;
}
.cta-section h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); margin-bottom: 10px; }
.cta-section p { color: var(--gray); margin-bottom: 28px; }
.cta-features { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; margin-top: 20px; }
.cta-tag { font-size: 0.82rem; color: rgba(255,255,255,0.6); display: flex; align-items: center; gap: 6px; }

/* ── CTA品牌信任背书 ── */
.cta-brand-trust {
  display: flex; gap: 2rem; justify-content: center; flex-wrap: wrap;
  margin-top: 1.5rem; padding: 1.5rem 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.cta-brand-trust-item {
  text-align: center; max-width: 280px;
}
.cta-brand-trust-icon { font-size: 1.8rem; margin-bottom: 0.5rem; }
.cta-brand-trust-label {
  font-size: 0.8rem; font-weight: 600; color: var(--gold);
  letter-spacing: 0.08em; margin-bottom: 0.3rem;
}
.cta-brand-trust-value {
  font-size: 0.75rem; color: rgba(255,255,255,0.5); line-height: 1.5;
}
@media (max-width: 640px) {
  .cta-brand-trust { gap: 1.2rem; }
  .cta-brand-trust-item { max-width: 100%; }
}

/* ── 资质横幅 ── */
.cert-bar {
  background: var(--dark2); padding: 16px 0; border-top: 1px solid var(--border);
  overflow-x: auto;
}
.cert-items { max-width: 1200px; margin: 0 auto; padding: 0 20px; display: flex; gap: 24px; align-items: center; white-space: nowrap; }
.cert-item { display: flex; align-items: center; gap: 8px; font-size: 0.82rem; color: rgba(255,255,255,0.7); }
.cert-divider { width: 1px; height: 20px; background: var(--border); }

/* ── 页脚 ── */
footer { background: var(--dark2); border-top: 1px solid var(--border); padding: 48px 0 24px; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 20px; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.footer-brand p { font-size: 0.85rem; color: var(--gray); margin-top: 10px; line-height: 1.6; }
.footer-links h4 { font-size: 0.9rem; margin-bottom: 12px; color: var(--white); }
.footer-links li { margin-bottom: 8px; }
.footer-links a { font-size: 0.85rem; color: var(--gray); transition: color var(--transition); }
.footer-links a:hover { color: var(--gold); }
.footer-bottom { max-width: 1200px; margin: 24px auto 0; padding: 16px 20px 0; border-top: 1px solid var(--border); text-align: center; }
.footer-bottom p { font-size: 0.8rem; color: var(--gray2); }

/* ── 联系表单 ── */
.contact-form { max-width: 600px; margin: 0 auto; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.88rem; color: rgba(255,255,255,0.7); margin-bottom: 6px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; background: var(--dark3); border: 1px solid var(--border2);
  border-radius: 8px; padding: 12px 14px; color: var(--white); font-size: 0.9rem;
  transition: border-color var(--transition);
}
.form-group input:focus, .form-group textarea:focus {
  outline: none; border-color: var(--gold);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-submit {
  width: 100%; background: var(--gold); color: #000; border: none;
  padding: 14px; border-radius: 8px; font-size: 1rem; font-weight: 700;
  cursor: pointer; transition: all var(--transition);
}
.form-submit:hover { background: var(--gold2); }

/* ── 浮动客服（2026-04-29 升级：微信快联气泡弹出） ── */
.float-actions { position: fixed; right: 20px; bottom: 100px; z-index: 999; display: flex; flex-direction: column; gap: 8px; }
.float-btn {
  width: 48px; height: 48px; border-radius: 50%; background: var(--gold);
  color: #000; border: none; font-size: 1.3rem; display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow); transition: all var(--transition); cursor: pointer; text-decoration: none;
}
.float-btn:hover { background: var(--gold2); transform: scale(1.08); }
.float-wechat { background: #07c160; color: #fff; position: relative; }
.float-wechat:hover { background: #06ae56; }
.float-phone { background: #1677ff; color: #fff; }
.float-phone:hover { background: #0e6bdd; }
/* 微信快联气泡卡片 */
.wechat-popup {
  position: absolute;
  right: 60px;
  bottom: 0;
  background: #fff;
  color: #222;
  border-radius: 12px;
  padding: 14px 16px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.25);
  width: 220px;
  opacity: 0;
  pointer-events: none;
  transform: translateX(10px) scale(0.95);
  transition: opacity 0.25s, transform 0.25s;
  white-space: normal;
  z-index: 1000;
}
.wechat-popup::after {
  content: '';
  position: absolute;
  right: -8px;
  bottom: 16px;
  width: 0; height: 0;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  border-left: 8px solid #fff;
}
.float-wechat:hover .wechat-popup,
.float-wechat:focus-within .wechat-popup {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0) scale(1);
}
.wechat-popup-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: #07c160;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.wechat-popup-id {
  font-size: 1rem;
  font-weight: 700;
  color: #111;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}
.wechat-popup-sub {
  font-size: 0.72rem;
  color: #888;
  line-height: 1.5;
}
.wechat-popup-copy {
  display: inline-block;
  margin-top: 8px;
  background: #07c160;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 20px;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}
.wechat-popup-copy:hover { background: #06ae56; }
.wechat-popup-copy.copied { background: #4caf50; }

/* ── 返回顶部 ── */
.back-to-top {
  position: fixed; right: 20px; bottom: 24px; z-index: 998;
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--dark2); border: 1px solid var(--border2);
  color: rgba(255,255,255,0.6); font-size: 1.2rem;
  display: none; align-items: center; justify-content: center;
  cursor: pointer; transition: all var(--transition);
}
.back-to-top.show { display: flex; }
.back-to-top:hover { border-color: var(--gold); color: var(--gold); }

/* ── 移动端底部固定 ── */
.mobile-sticky {
  display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 998;
  background: var(--dark2); border-top: 1px solid var(--border);
  padding: 10px 16px; gap: 10px;
}
.mobile-sticky-btns { display: flex; gap: 8px; }
.mobile-sticky .btn-primary { flex: 1; justify-content: center; padding: 10px; font-size: 0.9rem; }

/* ── 响应式 ── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--dark2); border-bottom: 1px solid var(--border); padding: 16px; gap: 12px; }
  .nav-toggle { display: block; }
  .hero h1 { font-size: 1.8rem; }
  .hero-stats { flex-direction: column; align-items: center; }
  .hero-stat-divider { display: none; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .highlight-divider { display: none; }
  .mobile-sticky { display: flex; }
  main { padding-bottom: 70px; }
  .float-actions { right: 12px; bottom: 80px; }
  .back-to-top { right: 12px; bottom: 10px; }
  .series-nav-grid { grid-template-columns: repeat(3, 1fr); }
  .case-cta-inner { flex-direction: column; }
  .case-cta-reviews { gap: 10px; }
}
@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
  .cta-section .btn-primary, .cta-section .btn-outline { width: 100%; justify-content: center; }
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .series-nav-grid { grid-template-columns: repeat(2, 1fr); }
  .review-item { display: none; }
  .review-item:first-child { display: block; }
}

/* ── 装车图品牌折叠 ── */
.brand-group { margin-bottom: 16px; background: var(--dark2); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.brand-group-header { display: flex; align-items: center; gap: 10px; padding: 14px 16px; cursor: pointer; }
.brand-group-header h3 { font-size: 0.95rem; }
.count-badge { background: rgba(201,168,76,0.15); color: var(--gold); font-size: 0.75rem; padding: 2px 8px; border-radius: 10px; }
.brand-group-images { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; padding: 0 16px; max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.brand-group-images.open { max-height: 2000px; padding: 12px 16px; }
.case-thumb { position: relative; aspect-ratio: 16/10; overflow: hidden; border-radius: 6px; cursor: pointer; }
.case-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition); }
.case-thumb:hover img { transform: scale(1.05); }

/* ── 产品列表页筛选 ── */
.filter-bar { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; align-items: center; }
.filter-label { font-size: 0.88rem; color: var(--gray); }
.filter-btn {
  padding: 5px 14px; border-radius: 20px; border: 1px solid var(--border2);
  background: var(--dark2); color: rgba(255,255,255,0.7); font-size: 0.82rem;
  transition: all var(--transition);
}
.filter-btn.active, .filter-btn:hover { border-color: var(--gold); color: var(--gold); }

/* ── 产品详情页 ── */
.product-detail-layout { display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;margin-top:40px; }
.product-main-img { position:relative;overflow:hidden;border-radius:var(--radius);background:#000; }
.product-main-img img { width:100%;aspect-ratio:1;object-fit:contain;background:#000;display:block; }
.product-thumbs { display:flex;gap:8px;margin-top:12px;flex-wrap:wrap;max-height:180px;overflow-y:auto;scrollbar-width:thin; }
.product-thumbs::-webkit-scrollbar { height:4px;width:4px; }
.product-thumbs::-webkit-scrollbar-thumb { background:var(--gold);border-radius:2px; }
.product-thumbs img { width:72px;height:72px;object-fit:contain;border-radius:6px;cursor:pointer;border:2px solid transparent;transition:border-color 0.2s;flex-shrink:0;background:#000; }
.product-thumbs img.active, .product-thumbs img:hover { border-color:var(--gold); }
.product-info h1 { font-size:1.8rem;margin-bottom:12px; }
.product-info > p { color:var(--gray);font-size:0.95rem;margin-bottom:16px;line-height:1.7; }
.product-tags { display:flex;gap:8px;flex-wrap:wrap;margin-top:12px; }
.product-tag { background:rgba(255,255,255,0.06);border:1px solid var(--border);padding:4px 12px;border-radius:20px;font-size:0.78rem;color:var(--gray); }
.product-params { background:var(--dark2);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-top:20px; }
.product-params h4 { font-size:0.88rem;margin-bottom:10px;color:var(--gray); }
.param-row { display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px solid var(--border);font-size:0.88rem; }
.param-row:last-child { border-bottom:none; }
.param-label { color:var(--gray); }
.param-value { color:var(--white);font-weight:600; }
.product-detail-video { margin-top:16px; }
.product-detail-video video { width:100%;max-width:400px;border-radius:var(--radius);border:1px solid var(--border); }
@media(max-width:768px){ .product-detail-layout{grid-template-columns:1fr;} }

/* ── 合作伙伴页 ── */
.partner-benefits { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.benefit-card { background: var(--dark2); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.benefit-icon { font-size: 2rem; margin-bottom: 10px; }
.benefit-card h4 { margin-bottom: 6px; }
.benefit-card p { font-size: 0.85rem; color: var(--gray); }

/* ── 合作流程 ── */
.coop-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-top: 24px; }
.coop-step { background: var(--dark2); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; text-align: center; }
.coop-step-num { font-size: 2rem; font-weight: 800; color: var(--gold); margin-bottom: 8px; }

/* ── 案例页 ── */
.cases-header { text-align: center; margin-bottom: 8px; }
.cases-subtitle { text-align: center; color: var(--gray); font-size: 0.88rem; margin-bottom: 24px; }

/* ── 工厂图网格 ── */
.factory-gallery {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px;
}
.factory-gallery img {
  width: 100%; aspect-ratio: 16/10; object-fit: cover; border-radius: 8px;
  cursor: pointer; transition: all var(--transition);
}
.factory-gallery img:hover { transform: scale(1.02); opacity: 0.9; }

/* ── 搜索高亮 ── */
mark { background: var(--gold); color: #000; border-radius: 2px; padding: 0 2px; }

/* ── 无结果 ── */
.no-results { text-align: center; padding: 60px 20px; color: var(--gray); }

/* ── 中心按钮 ── */
.center-btn { text-align: center; margin-top: 32px; }

/* ── 预览卡片 ── */
.preview-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 20px; }
.preview-card { background: var(--dark2); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.preview-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.preview-card-body { padding: 20px; }
.preview-card-body h3 { margin-bottom: 8px; }
.preview-card-body p { font-size: 0.88rem; color: var(--gray); margin-bottom: 12px; }
.preview-link { color: var(--gold); font-size: 0.88rem; font-weight: 600; }

/* ── 工厂统计 ── */
.factory-stats { display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; margin: 32px 0; }
.factory-stat { text-align: center; }
.factory-stat-num { font-size: 2.5rem; font-weight: 800; color: var(--gold); }
.factory-stat-label { font-size: 0.85rem; color: var(--gray); }

/* ── 页面Hero通用 ── */
.page-hero {
  padding: 120px 0 60px; text-align: left; background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.page-hero .display-xl { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 700; }

/* ── 页面Hero通用 ── */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
.stat-card {
  text-align: center; padding: 28px 16px; background: var(--dark2);
  border: 1px solid var(--border); border-radius: var(--radius);
}
.stat-num-lg {
  font-family: 'Cormorant Garamond', serif; font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600; color: var(--gold); line-height: 1.2;
}
.stat-num-lg span { font-size: 0.5em; color: var(--gray); margin-left: 4px; }
.stat-label-lg { font-size: 0.82rem; color: var(--gray); margin-top: 8px; letter-spacing: 0.05em; }

/* ── 工艺技术卡片 ── */
.tech-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.tech-card {
  background: var(--dark2); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px;
}
.tech-card-icon { font-size: 2rem; margin-bottom: 10px; }
.tech-card h4 { font-size: 1rem; margin-bottom: 6px; }
.tech-card p { font-size: 0.85rem; color: var(--gray); line-height: 1.7; }

/* ── 工艺流程 ── */
.process-flow { display: flex; justify-content: center; align-items: flex-start; gap: 12px; flex-wrap: wrap; }
.process-flow-item {
  text-align: center; padding: 20px 16px; flex: 1; min-width: 160px; max-width: 200px;
  background: var(--dark2); border: 1px solid var(--border); border-radius: var(--radius);
  position: relative;
}
.process-flow-num { position: absolute; top: 10px; left: 10px; color: var(--gold); font-size: 1.2rem; font-weight: 800; }
.process-flow-icon { font-size: 2rem; margin-bottom: 8px; }
.process-flow-item h4 { font-size: 0.95rem; margin-bottom: 6px; }
.process-flow-item p { font-size: 0.78rem; color: var(--gray); line-height: 1.6; }
.process-flow-arrow { color: var(--gold); font-size: 1.5rem; align-self: center; padding: 0 4px; }
@media (max-width: 768px) { .process-flow-arrow { display: none; } .process-flow-item { min-width: 100%; max-width: 100%; } }

/* ── 资质认证 ── */
.cert-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; max-width: 800px; margin: 0 auto; }
.cert-item {
  text-align: center; padding: 16px; background: var(--dark2);
  border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.9rem;
}

/* ── FAQ ── */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 2px; }
.faq-item { background: var(--dark2); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.faq-question {
  padding: 18px 20px; cursor: pointer; display: flex; justify-content: space-between; align-items: center;
  font-size: 0.95rem; font-weight: 500; transition: background var(--transition);
}
.faq-question:hover { background: var(--dark3); }
.faq-answer {
  display: none; padding: 0 20px 18px; color: var(--gray); font-size: 0.9rem; line-height: 1.8;
}
.faq-icon { color: var(--gold); font-size: 1.2rem; transition: transform var(--transition); }

/* ── 定制流程4步 ── */
.custom-steps {
  display: flex; justify-content: center; align-items: flex-start; gap: 16px; flex-wrap: wrap;
}
.custom-step {
  text-align: center; padding: 24px 20px; flex: 1; min-width: 180px; max-width: 240px;
  background: var(--dark2); border: 1px solid var(--border); border-radius: var(--radius);
}
.custom-step-num {
  position: absolute; top: 12px; left: 12px; color: var(--gold); font-size: 1.4rem; font-weight: 800;
}
.custom-step { position: relative; }
.custom-step-icon { font-size: 2.5rem; margin-bottom: 12px; }
.custom-step h3 { font-size: 1.05rem; margin-bottom: 8px; }
.custom-step p { font-size: 0.82rem; color: var(--gray); line-height: 1.6; }
.custom-step-arrow { color: var(--gold); font-size: 2rem; align-self: center; padding: 0 8px; }

@media (max-width: 768px) {
  .custom-step-arrow { display: none; }
  .custom-step { min-width: 100%; max-width: 100%; }
}

/* ── 步骤流程 ── */
.steps { display: flex; justify-content: center; gap: 0; flex-wrap: wrap; align-items: flex-start; }
.step { text-align: center; padding: 16px 24px; flex: 1; min-width: 160px; }
.step-num { color: var(--gold); font-size: 1.6rem; font-weight: 800; margin-bottom: 8px; }
.step h3 { font-size: 1rem; margin-bottom: 6px; }
.step p { font-size: 0.82rem; color: var(--gray); }
.step-arrow { color: var(--gold); font-size: 1.5rem; align-self: center; }

/* ── B端合作 ── */
.b2b-section { background: linear-gradient(135deg, rgba(201,168,76,0.06) 0%, var(--dark) 100%); }
.b2b-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
.b2b-card {
  background: var(--dark2); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; text-align: center;
}
.b2b-card-icon { font-size: 2.2rem; margin-bottom: 10px; }
.b2b-card h4 { font-size: 0.95rem; margin-bottom: 6px; }
.b2b-card-value { color: var(--gold); font-size: 1.2rem; font-weight: 700; }
.b2b-flow {
  background: var(--dark2); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; margin-top: 28px;
}
.b2b-flow h3 { text-align: center; margin-bottom: 20px; }
.b2b-steps { display: flex; justify-content: center; gap: 0; flex-wrap: wrap; }
.b2b-step { text-align: center; padding: 12px 20px; }
.b2b-step-num { color: var(--gold); font-size: 1.4rem; font-weight: 700; margin-bottom: 6px; }
.b2b-step-title { font-weight: 600; font-size: 0.9rem; margin-bottom: 4px; }
.b2b-step-desc { font-size: 0.8rem; color: var(--gray); }

/* ── 对比表 ── */
.comparison-table { overflow-x: auto; }
table {
  width: 100%; border-collapse: collapse; font-size: 0.88rem;
  background: var(--dark2); border-radius: var(--radius); overflow: hidden;
}
th, td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--border); }
th { background: var(--dark3); font-weight: 600; }
td:first-child { color: var(--gray); }
.highlight-col { background: rgba(201,168,76,0.05); color: var(--gold); font-weight: 600; }

/* ── 客户评价 ── */
.reviews-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.review-card {
  background: var(--dark2); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px;
}
.review-stars { color: var(--gold); font-size: 1rem; margin-bottom: 10px; }
.review-text { font-size: 0.88rem; color: rgba(255,255,255,0.8); margin-bottom: 14px; line-height: 1.7; }
.review-author { display: flex; align-items: center; gap: 10px; }
.review-avatar {
  width: 36px; height: 36px; border-radius: 50%; background: var(--gold);
  color: #000; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.9rem;
}
.review-name { font-weight: 600; font-size: 0.9rem; }
.review-car { font-size: 0.78rem; color: var(--gray); }

/* ── 价格卡片 ── */
.price-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.price-card {
  background: var(--dark2); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden;
}
.price-card.featured { border-color: var(--gold); }
.price-card-header { padding: 20px; text-align: center; border-bottom: 1px solid var(--border); }
.price-tier { font-size: 0.9rem; color: var(--gray); margin-bottom: 8px; }
.price-range { font-size: 1.8rem; font-weight: 800; color: var(--white); }
.price-range span { font-size: 0.9rem; font-weight: 400; color: var(--gray); }
.price-card-body { padding: 20px; }
.price-features { margin-bottom: 16px; }
.price-features li { padding: 6px 0; font-size: 0.88rem; color: rgba(255,255,255,0.8); }
.price-cta {
  display: block; text-align: center; padding: 10px; border-radius: 8px;
  background: rgba(255,255,255,0.1); color: var(--white); font-size: 0.9rem; font-weight: 600;
  transition: all var(--transition);
}
.price-cta:hover { background: var(--gold); color: #000; }

/* ── 合作伙伴 ── */
.trust-logos { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; margin: 24px 0; }
.trust-logo-item { text-align: center; }
.trust-logo-icon { font-size: 2rem; }
.trust-logo-name { font-weight: 600; font-size: 0.9rem; margin-top: 4px; }
.trust-logo-tag { font-size: 0.72rem; color: var(--gold); }

/* ── Hero 居中布局 ── */
.hero-inner {
  position: relative; z-index: 2; text-align: center;
  max-width: 760px; margin: 0 auto;
}

/* ── 滚动动画 ── */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}