/* ===================== 基础 ===================== */
:root {
  --ink: #1c2330;
  --ink-2: #4a5566;
  --ink-3: #7b8698;
  --line: #e6e9ef;
  --bg: #ffffff;
  --bg-soft: #f6f7fa;
  --brand: #8a5a2b;
  --brand-deep: #6b431f;
  --accent: #2563eb;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(28, 35, 48, .08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", -apple-system, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  font-size: 15px;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===================== 头部 ===================== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-bar { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 38px; height: 38px; border-radius: 9px;
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
  color: #fff; font-weight: 700; font-size: 15px;
  display: flex; align-items: center; justify-content: center; letter-spacing: .5px;
}
.logo-text { display: flex; flex-direction: column; font-size: 17px; font-weight: 700; line-height: 1.2; }
.logo-text em {
  font-style: normal; font-size: 10px; font-weight: 500;
  letter-spacing: 1.4px; color: var(--ink-3);
}
.nav { display: flex; gap: 28px; }
.nav a { font-size: 15px; color: var(--ink-2); position: relative; padding: 4px 0; }
.nav a:hover { color: var(--brand); }
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 0;
  background: var(--brand); transition: width .2s;
}
.nav a:hover::after { width: 100%; }
.nav-contact { display: flex; align-items: center; gap: 14px; }
.nav-contact .phone { font-weight: 700; color: var(--brand-deep); }
.nav-contact .lang {
  font-size: 12px; color: var(--ink-3); border: 1px solid var(--line);
  padding: 3px 10px; border-radius: 20px;
}

/* ===================== 首屏 ===================== */
.hero { background: linear-gradient(180deg, #fbf9f6 0%, #ffffff 100%); padding: 64px 0 72px; }
.hero-inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.eyebrow {
  display: inline-block; font-size: 12px; letter-spacing: 1.6px; color: var(--brand);
  background: #f4ece2; padding: 5px 12px; border-radius: 20px; margin-bottom: 18px;
}
.hero h1 { font-size: 42px; line-height: 1.32; letter-spacing: -.5px; }
.hero h1 b { color: var(--brand); }
.hero-text p { color: var(--ink-2); margin-top: 16px; font-size: 16px; }
.hero-actions { display: flex; gap: 14px; margin-top: 26px; }
.btn {
  display: inline-block; padding: 12px 24px; border-radius: 8px;
  font-size: 15px; font-weight: 600; transition: .18s; border: 1px solid transparent;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-deep); transform: translateY(-1px); }
.btn-ghost { background: #fff; color: var(--brand-deep); border-color: #d8c6b2; }
.btn-ghost:hover { border-color: var(--brand); }
.hero-stats { display: flex; gap: 34px; margin-top: 34px; flex-wrap: wrap; }
.hero-stats li { list-style: none; }
.hero-stats b { display: block; font-size: 24px; color: var(--brand-deep); }
.hero-stats span { font-size: 13px; color: var(--ink-3); }
.hero-media { position: relative; }
.hero-media img { width: 100%; border-radius: 16px; box-shadow: var(--shadow); aspect-ratio: 1/1; object-fit: cover; }
.float-card {
  position: absolute; left: -18px; bottom: 26px; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px 18px; box-shadow: var(--shadow);
}
.float-card b { display: block; font-size: 15px; color: var(--brand-deep); }
.float-card span { font-size: 12px; color: var(--ink-3); }

/* ===================== 通用区块 ===================== */
.sec-head { text-align: center; margin-bottom: 34px; }
.sec-head h2 { font-size: 30px; letter-spacing: -.3px; }
.sec-head p { color: var(--ink-3); margin-top: 8px; }

.strength { padding: 72px 0; background: var(--bg-soft); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; }
.feat .ico { font-size: 26px; color: var(--brand); }
.feat h3 { font-size: 17px; margin: 10px 0 6px; }
.feat p { color: var(--ink-2); font-size: 14px; }

/* ===================== 产品列表 ===================== */
.products { padding: 72px 0; }
.filters { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 20px; }
.filters button {
  border: 1px solid var(--line); background: #fff; color: var(--ink-2);
  padding: 8px 18px; border-radius: 22px; font-size: 14px; cursor: pointer; transition: .18s;
}
.filters button:hover { border-color: var(--brand); color: var(--brand); }
.filters button.on { background: var(--brand); border-color: var(--brand); color: #fff; }
.search-row { max-width: 460px; margin: 0 auto 30px; }
.search-row input {
  width: 100%; padding: 12px 16px; border: 1px solid var(--line);
  border-radius: 8px; font-size: 14px; outline: none; background: var(--bg-soft);
}
.search-row input:focus { border-color: var(--brand); background: #fff; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column; transition: .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #d8c6b2; }
.card-media { position: relative; aspect-ratio: 1/1; overflow: hidden; background: var(--bg-soft); }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s; }
.card:hover .card-media img { transform: scale(1.05); }
.badge {
  position: absolute; top: 12px; left: 12px; background: #d9482b; color: #fff;
  font-size: 12px; padding: 3px 10px; border-radius: 4px;
}
.card-body { padding: 18px 20px 20px; display: flex; flex-direction: column; flex: 1; }
.tag {
  align-self: flex-start; font-size: 12px; color: var(--brand-deep);
  background: #f4ece2; padding: 3px 10px; border-radius: 4px; margin-bottom: 10px;
}
.card-body h3 { font-size: 18px; }
.card-body .en { font-size: 12px; color: var(--ink-3); letter-spacing: .4px; margin-bottom: 12px; }
.meta { border-top: 1px dashed var(--line); padding-top: 10px; display: grid; gap: 4px; }
.meta > div { display: flex; gap: 10px; font-size: 13px; }
.meta dt { color: var(--ink-3); min-width: 32px; }
.meta dd { color: var(--ink-2); }
.more { margin-top: 14px; font-size: 14px; font-weight: 600; color: var(--brand); }
.card:hover .more { text-decoration: underline; }
.empty { text-align: center; color: var(--ink-3); padding: 40px 0; }

/* ===================== 流程 ===================== */
.process { padding: 72px 0; background: var(--bg-soft); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; list-style: none; counter-reset: s; }
.steps li { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 20px; }
.steps span { font-size: 26px; font-weight: 800; color: #ecdcc9; }
.steps h3 { font-size: 17px; margin: 6px 0; }
.steps p { font-size: 14px; color: var(--ink-2); }

/* ===================== 详情页 ===================== */
.crumb { padding: 20px 24px; font-size: 13px; color: var(--ink-3); }
.crumb a:hover { color: var(--brand); }
.crumb i { font-style: normal; margin: 0 8px; color: #c9cfda; }
.container { max-width: 1200px; margin: 0 auto; padding: 8px 24px 40px; }
.product-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: flex-start; }
.product-img img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow); aspect-ratio: 1/1; object-fit: cover; }
.info h2 { font-size: 30px; line-height: 1.35; margin: 4px 0; }
.info .en { font-size: 13px; color: var(--ink-3); letter-spacing: .5px; margin-bottom: 20px; }
.spec-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; }
.spec-table th, .spec-table td { text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--line); font-size: 14px; vertical-align: top; }
.spec-table th { width: 92px; color: var(--ink-3); font-weight: 500; background: #fafbfc; }
.spec-table td { color: var(--ink); }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.back-btn {
  display: inline-block; padding: 12px 20px; border: 1px solid var(--line);
  border-radius: 8px; font-size: 14px; color: var(--ink-2);
}
.back-btn:hover { border-color: var(--brand); color: var(--brand); }

.block { margin-top: 56px; }
.block-title {
  font-size: 20px; padding-left: 12px; border-left: 4px solid var(--brand);
  margin-bottom: 16px; line-height: 1.3;
}
.feature-text { color: var(--ink-2); font-size: 15.5px; max-width: 900px; }
.bullets { list-style: none; display: grid; gap: 10px; color: var(--ink-2); max-width: 900px; }
.bullets li { padding-left: 18px; position: relative; font-size: 14.5px; }
.bullets li::before {
  content: ""; position: absolute; left: 0; top: 10px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--brand);
}
.bullets b { color: var(--ink); }
.empty-box { text-align: center; padding: 80px 20px; }
.empty-box h2 { font-size: 26px; margin-bottom: 10px; }
.empty-box p { color: var(--ink-3); margin-bottom: 22px; }

/* ===================== 页脚 ===================== */
.site-footer { background: #1c2330; color: #c8cfda; padding: 56px 0 24px; margin-top: 72px; }
.footer-inner { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.footer-brand .logo-text, .footer-brand .logo-text span { color: #fff; font-size: 16px; }
.footer-brand .logo-text em { display: block; font-size: 12px; color: #8f9aab; margin-top: 6px; white-space: normal; letter-spacing: 0; }
.footer-brand .btn { margin-top: 18px; }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 14px; }
.footer-col p { font-size: 14px; margin: 6px 0; }
.copyright {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  border-top: 1px solid #2c3646; margin-top: 36px; padding-top: 18px;
  font-size: 12.5px; color: #7d8798;
}

/* ===================== 响应式 ===================== */
@media (max-width: 960px) {
  .nav { display: none; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
  .grid-4, .steps { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .product-wrap { grid-template-columns: 1fr; gap: 28px; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .float-card { left: 12px; }
}
@media (max-width: 620px) {
  .grid-3, .grid-4, .steps { grid-template-columns: 1fr; }
  .nav-contact .lang { display: none; }
  .hero-stats { gap: 20px; }
}