/* ============================================================
   恒玖源健康药业 · 企业官网设计系统
   调性：药食同源 · 源头工厂 · 沉稳专业
   主色：墨绿 #0E3A2A；点缀：logo鲜绿 #7CB92E / 金棕 #B08A3E
   ============================================================ */
:root {
  --primary: #0E3A2A;
  --primary-deep: #082B1E;
  --primary-light: #1B6E4B;
  --leaf: #7CB92E;
  --accent: #B08A3E;
  --accent-light: #D8B978;
  --ink: #22312A;
  --muted: #63706A;
  --bg: #F7F5F0;
  --bg-alt: #EFECE4;
  --surface: #FFFFFF;
  --line: #E3DFD4;
  --line-dark: rgba(255, 255, 255, 0.14);
  --shadow-sm: 0 2px 10px rgba(14, 58, 42, 0.07);
  --shadow-md: 0 12px 34px rgba(14, 58, 42, 0.12);
  --radius: 10px;
  --serif: Georgia, "Times New Roman", "STZhongsong", "SimSun", serif;
  --sans: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Courier New", monospace;
  --tech-bg: #07211A;
  --tech-panel: rgba(124, 185, 46, 0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

.container { width: min(1180px, 92%); margin: 0 auto; }

/* ---------- 章节眉（克制版） ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--accent);
}
.eyebrow .num { font-family: var(--serif); letter-spacing: 1px; opacity: 0.8; }

h1, h2, h3 { font-weight: 800; letter-spacing: 0.02em; line-height: 1.3; }
.section { padding: 84px 0; }
.section-title { font-size: clamp(26px, 3.4vw, 38px); color: var(--primary); }
.section-sub { color: var(--muted); margin-top: 12px; max-width: 640px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.25s ease;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-ghost { border-color: var(--line-dark); color: #fff; background: transparent; }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.1); }
.btn-gold { background: var(--accent); color: #fff; }
.btn-gold:hover { background: #9a742e; transform: translateY(-2px); }

/* ---------- 顶栏 ---------- */
.topbar {
  background: var(--primary-deep);
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 38px;
}
.topbar a:hover { color: var(--accent-light); }
.topbar .tb-group { display: flex; gap: 22px; align-items: center; }

/* ---------- 主导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(14, 58, 42, 0.1); }
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 44px; width: auto; }
.brand-text { line-height: 1.25; }
.brand-text .cn { font-size: 19px; font-weight: 800; color: var(--primary); letter-spacing: 1px; }
.brand-text .en { font-size: 10.5px; color: var(--muted); letter-spacing: 3.5px; text-transform: uppercase; }

.main-nav ul { display: flex; gap: 8px; }
.main-nav a {
  display: block;
  padding: 10px 18px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
  border-radius: 6px;
  position: relative;
  transition: color 0.2s;
}
.main-nav a:hover { color: var(--primary-light); }
.main-nav a.active { color: var(--primary); }
.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 18px; right: 18px; bottom: 2px;
  height: 2px;
  background: var(--leaf);
  border-radius: 2px;
}
.nav-phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  padding: 10px 20px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  margin-left: 18px;
  transition: background 0.2s;
}
.nav-phone:hover { background: var(--primary-light); }
.nav-phone svg { width: 15px; height: 15px; }

.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--primary);
  margin: 5px 0;
  transition: all 0.3s;
}

/* ---------- Hero（首页） ---------- */
.hero {
  background:
    radial-gradient(ellipse 900px 500px at 85% -10%, rgba(124, 185, 46, 0.16), transparent 60%),
    linear-gradient(160deg, var(--primary) 0%, var(--primary-deep) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 26px 26px;
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
  padding: 88px 0 92px;
  position: relative;
  z-index: 1;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line-dark);
  border-radius: 100px;
  padding: 7px 18px;
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--accent-light);
  margin-bottom: 26px;
}
.hero-tag::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--leaf);
}
.hero h1 {
  font-size: clamp(34px, 4.6vw, 54px);
  line-height: 1.28;
  letter-spacing: 0.01em;
}
.hero h1 em {
  font-style: normal;
  color: var(--leaf);
}
.hero p.lead {
  margin-top: 22px;
  font-size: 16.5px;
  color: rgba(255, 255, 255, 0.78);
  max-width: 520px;
}
.hero-actions { margin-top: 36px; display: flex; gap: 16px; flex-wrap: wrap; }

.hero-visual { position: relative; }
.hero-visual .hv-main {
  border-radius: var(--radius);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
  border: 1px solid var(--line-dark);
}
.hero-visual .hv-badge {
  position: absolute;
  left: -26px;
  bottom: 34px;
  background: var(--surface);
  color: var(--primary);
  border-radius: var(--radius);
  padding: 16px 22px;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 14px;
}
.hero-visual .hv-badge .big {
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 700;
  color: var(--accent);
}
.hero-visual .hv-badge .cap { font-size: 13px; color: var(--muted); line-height: 1.45; }

/* ---------- 数据条 ---------- */
.stats-band { background: var(--surface); border-bottom: 1px solid var(--line); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 44px 0;
}
.stat {
  text-align: center;
  padding: 6px 12px;
  border-left: 1px solid var(--line);
}
.stat:first-child { border-left: none; }
.stat .num {
  font-family: var(--serif);
  font-size: clamp(30px, 3.6vw, 44px);
  font-weight: 700;
  color: var(--primary);
}
.stat .num small { font-size: 0.5em; color: var(--accent); margin-left: 3px; font-family: var(--sans); font-weight: 600; }
.stat .cap { margin-top: 4px; font-size: 14px; color: var(--muted); letter-spacing: 1px; }

/* ---------- 通用双栏 ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.split .pic img { border-radius: var(--radius); box-shadow: var(--shadow-md); }
.split .pic-stack { position: relative; padding-bottom: 46px; }
.split .pic-stack .p2 {
  position: absolute;
  right: -20px;
  bottom: 0;
  width: 46%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  border: 4px solid var(--bg);
}
.value-list { margin-top: 26px; display: grid; gap: 16px; }
.value-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 20px;
}
.value-list .v-ico {
  flex: 0 0 40px;
  height: 40px;
  border-radius: 8px;
  background: linear-gradient(150deg, var(--primary), var(--primary-light));
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 18px;
}
.value-list h4 { font-size: 16px; color: var(--primary); }
.value-list p { font-size: 14px; color: var(--muted); margin-top: 2px; }

/* ---------- 产品区 ---------- */
.cat-chips { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 34px; }
.cat-chips button {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  padding: 8px 18px;
  border-radius: 100px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--sans);
}
.cat-chips button:hover { border-color: var(--primary-light); color: var(--primary); }
.cat-chips button.active { background: var(--primary); border-color: var(--primary); color: #fff; }

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.product-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.28s ease, box-shadow 0.28s ease;
  display: flex;
  flex-direction: column;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.product-card .ph {
  background: #fff;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  display: grid;
  place-items: center;
  border-bottom: 1px solid var(--line);
}
.product-card .ph img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.product-card:hover .ph img { transform: scale(1.04); }
.product-card .bd { padding: 16px 18px 18px; flex: 1; display: flex; flex-direction: column; }
.product-card h3 { font-size: 16.5px; color: var(--primary); }
.product-card .tag {
  display: inline-block;
  margin-top: 8px;
  font-size: 12px;
  color: var(--accent);
  border: 1px solid rgba(176, 138, 62, 0.35);
  background: rgba(176, 138, 62, 0.08);
  padding: 3px 10px;
  border-radius: 100px;
  align-self: flex-start;
}
.product-card p { font-size: 13.5px; color: var(--muted); margin-top: 10px; flex: 1; }

/* ---------- 品类速览（文本栏） ---------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background: var(--surface);
}
.cat-cell {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 26px 28px;
  transition: background 0.2s;
}
.cat-cell:hover { background: var(--bg); }
.cat-cell h4 { color: var(--primary); font-size: 17px; display: flex; align-items: center; gap: 10px; }
.cat-cell h4::before { content: "❖"; color: var(--leaf); font-size: 14px; }
.cat-cell p { font-size: 13.5px; color: var(--muted); margin-top: 8px; }

/* ---------- 合作品牌 ---------- */
.partners-band { background: var(--primary); color: #fff; }
.partner-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
  margin-top: 40px;
}
.partner-grid .pg {
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
  padding: 26px 10px;
  text-align: center;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 2px;
  color: rgba(255, 255, 255, 0.82);
  transition: all 0.25s;
}
.partner-grid .pg:hover { color: var(--leaf); background: rgba(255, 255, 255, 0.04); }
.partner-grid .pg small { display: block; font-size: 11px; letter-spacing: 2px; color: rgba(255, 255, 255, 0.4); margin-top: 4px; font-weight: 400; }

/* ---------- 资质 / Banner 复用 ---------- */
.cert-strip { background: var(--bg-alt); }
.cert-strip img { border-radius: var(--radius); box-shadow: var(--shadow-sm); }

/* ---------- CTA ---------- */
.cta-band {
  background:
    radial-gradient(ellipse 700px 380px at 15% 120%, rgba(124, 185, 46, 0.2), transparent 65%),
    linear-gradient(150deg, var(--primary), var(--primary-deep));
  color: #fff;
  text-align: center;
}
.cta-band h2 { font-size: clamp(24px, 3vw, 34px); }
.cta-band p { color: rgba(255, 255, 255, 0.75); margin: 14px 0 30px; }
.cta-band .btn-gold { font-size: 16px; padding: 15px 42px; }

/* ---------- 页内 Banner（子页头） ---------- */
.page-hero {
  background:
    radial-gradient(ellipse 800px 400px at 90% 0%, rgba(124, 185, 46, 0.14), transparent 60%),
    linear-gradient(160deg, var(--primary) 0%, var(--primary-deep) 100%);
  color: #fff;
  padding: 64px 0 58px;
}
.page-hero h1 { font-size: clamp(28px, 3.6vw, 42px); }
.page-hero .crumbs { font-size: 13.5px; color: rgba(255, 255, 255, 0.6); margin-top: 14px; letter-spacing: 1px; }
.page-hero .crumbs a:hover { color: var(--leaf); }

/* ---------- 新闻列表 ---------- */
.news-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.news-card {
  display: flex;
  gap: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  transition: transform 0.25s, box-shadow 0.25s;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.news-card .date {
  flex: 0 0 76px;
  text-align: center;
  border-right: 1px solid var(--line);
  padding-right: 20px;
  align-self: stretch;
}
.news-card .date .d { font-family: var(--serif); font-size: 30px; font-weight: 700; color: var(--primary); line-height: 1.1; }
.news-card .date .m { font-size: 12.5px; color: var(--accent); letter-spacing: 1px; }
.news-card h3 { font-size: 16.5px; color: var(--primary); line-height: 1.5; }
.news-card p { font-size: 13.5px; color: var(--muted); margin-top: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card .meta { margin-top: 10px; font-size: 12.5px; color: var(--accent); letter-spacing: 1px; }

.news-featured {
  grid-column: 1 / -1;
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.news-featured h3 { color: #fff; font-size: 19px; }
.news-featured p { color: rgba(255, 255, 255, 0.72); }
.news-featured .date { border-color: var(--line-dark); }
.news-featured .date .d { color: var(--leaf); }
.news-featured .meta { color: var(--accent-light); }
.news-featured:hover { box-shadow: var(--shadow-md); }

/* ---------- 工厂图集 ---------- */
.factory-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.factory-grid figure { position: relative; overflow: hidden; border-radius: var(--radius); }
.factory-grid img { aspect-ratio: 4 / 3; object-fit: cover; width: 100%; transition: transform 0.4s ease; }
.factory-grid figure:hover img { transform: scale(1.05); }
.factory-grid figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 30px 18px 14px;
  background: linear-gradient(transparent, rgba(8, 43, 30, 0.85));
  color: #fff;
  font-size: 14.5px;
  letter-spacing: 1px;
}

/* ---------- 流程 ---------- */
.flow-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; counter-reset: flow; }
.flow-step {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 16px;
  text-align: center;
  position: relative;
  transition: transform 0.25s;
}
.flow-step:hover { transform: translateY(-4px); }
.flow-step::before {
  counter-increment: flow;
  content: "0" counter(flow);
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 700;
  color: var(--accent);
  display: block;
  margin-bottom: 8px;
}
.flow-step h4 { font-size: 15.5px; color: var(--primary); }
.flow-step p { font-size: 12.5px; color: var(--muted); margin-top: 6px; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items: start; }
.info-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 28px;
  margin-bottom: 18px;
  display: flex;
  gap: 16px;
}
.info-card .ico {
  flex: 0 0 44px; height: 44px;
  border-radius: 8px;
  background: rgba(124, 185, 46, 0.12);
  color: var(--primary);
  display: grid; place-items: center;
  font-size: 19px;
}
.info-card h4 { font-size: 15px; color: var(--muted); font-weight: 600; letter-spacing: 1px; }
.info-card p { color: var(--primary); font-weight: 600; font-size: 16px; margin-top: 4px; line-height: 1.6; }

.form-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 36px;
  box-shadow: var(--shadow-sm);
}
.form-card h3 { font-size: 21px; color: var(--primary); margin-bottom: 6px; }
.form-card .hint { font-size: 13.5px; color: var(--muted); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-field { margin-bottom: 16px; }
.form-field label { display: block; font-size: 13.5px; font-weight: 600; color: var(--primary); margin-bottom: 7px; }
.form-field label .req { color: #C0392B; margin-left: 2px; }
.form-field input, .form-field select, .form-field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 11px 14px;
  font-size: 14.5px;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  outline: none;
  transition: border 0.2s, box-shadow 0.2s;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(27, 110, 75, 0.12);
  background: #fff;
}
.form-field textarea { resize: vertical; min-height: 110px; }
.form-note { font-size: 12.5px; color: var(--muted); margin-top: 14px; }
.form-success {
  display: none;
  background: rgba(124, 185, 46, 0.12);
  border: 1px solid rgba(124, 185, 46, 0.45);
  color: var(--primary);
  border-radius: 8px;
  padding: 14px 18px;
  margin-bottom: 18px;
  font-size: 14.5px;
}

/* ---------- FAQ ---------- */
.faq-list { max-width: 860px; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 20px 6px;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-family: var(--serif); font-size: 22px; color: var(--accent); transition: transform 0.25s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .ans { padding: 0 6px 22px; color: var(--muted); font-size: 15px; max-width: 760px; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--primary-deep); color: rgba(255, 255, 255, 0.72); font-size: 14px; }
.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding: 58px 0 46px;
}
.site-footer h4 { color: #fff; font-size: 15.5px; letter-spacing: 2px; margin-bottom: 18px; }
.site-footer .f-brand img { height: 46px; margin-bottom: 14px; }
.site-footer p { line-height: 1.9; }
.site-footer ul li { margin-bottom: 10px; }
.site-footer a:hover { color: var(--leaf); }
.footer-bottom {
  border-top: 1px solid var(--line-dark);
  padding: 18px 0;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.45);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 产品详情页 ---------- */
.pd-wrap { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items: start; }
.pd-media { position: relative; border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-md); background: #fff; border: 1px solid var(--line); }
.pd-media img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
.pd-badge { display: inline-flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 12px; letter-spacing: 2px; color: var(--accent); border: 1px solid rgba(176,138,62,.35); background: rgba(176,138,62,.08); padding: 6px 14px; border-radius: 100px; margin-bottom: 18px; }
.pd-title { font-size: clamp(24px, 3vw, 34px); font-weight: 800; color: var(--primary); line-height: 1.3; }
.pd-lead { margin-top: 14px; color: var(--muted); font-size: 15px; line-height: 1.8; }
.pd-keys { margin-top: 24px; display: grid; gap: 2px; }
.pd-keys .row { display: grid; grid-template-columns: 112px 1fr; gap: 16px; padding: 13px 4px; border-bottom: 1px solid var(--line); }
.pd-keys .row .k { font-size: 13px; color: var(--muted); letter-spacing: 1px; }
.pd-keys .row .v { font-size: 15px; color: var(--primary); font-weight: 600; line-height: 1.6; }
.pd-cta { margin-top: 30px; display: flex; gap: 14px; flex-wrap: wrap; }
.pd-full { margin-top: 64px; }
.pd-spec-table { width: 100%; border-collapse: collapse; margin-top: 24px; }
.pd-spec-table th, .pd-spec-table td { text-align: left; padding: 15px 18px; border: 1px solid var(--line); font-size: 14.5px; vertical-align: top; }
.pd-spec-table th { background: var(--bg); color: var(--primary); width: 150px; font-weight: 600; letter-spacing: 1px; }
.pd-related { margin-top: 30px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 820px) {
  .pd-wrap { grid-template-columns: 1fr; gap: 30px; }
  .pd-related { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .pd-related { grid-template-columns: 1fr 1fr; }
  .pd-keys .row { grid-template-columns: 92px 1fr; }
}

/* ---------- 滚动揭示 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .flow-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .partner-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 820px) {
  .topbar .tb-group .tb-hide { display: none; }
  .main-nav {
    display: none;
    position: absolute;
    top: 74px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    padding: 10px 4%;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0; }
  .main-nav a { padding: 13px 8px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .main-nav a.active::after { display: none; }
  .nav-phone { display: none; }
  .hamburger { display: block; }
  .hero-inner { grid-template-columns: 1fr; padding: 60px 0 70px; }
  .hero-visual .hv-badge { left: 10px; }
  .split, .contact-grid, .news-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); row-gap: 26px; }
  .stat { border-left: none; }
  .stat:nth-child(even) { border-left: 1px solid var(--line); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-grid { grid-template-columns: 1fr 1fr; }
  .factory-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 60px 0; }
}
@media (max-width: 560px) {
  .product-grid, .cat-grid, .factory-grid, .flow-grid { grid-template-columns: 1fr 1fr; }
  .flow-grid { grid-template-columns: 1fr 1fr; }
  .partner-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 30px; }
  .news-card { flex-direction: column; }
  .news-card .date { border-right: none; border-bottom: 1px solid var(--line); padding: 0 0 12px; text-align: left; display: flex; gap: 10px; align-items: baseline; }
  .brand-text .cn { font-size: 16px; }
  .brand img { height: 38px; }
}

/* ============================================================
   首页 v2 · 硬核品控工厂 主线
   调性：监控中台 / 源头硬实力 / 信任状
   ============================================================ */

/* ---- 信任条（极简快标） ---- */
.trust-strip {
  background: var(--tech-bg);
  border-bottom: 1px solid rgba(124, 185, 46, 0.18);
}
.trust-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0;
  padding: 16px 0;
}
.trust-row .t {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 0 26px;
  border-left: 1px solid rgba(255, 255, 255, 0.09);
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  letter-spacing: 1px;
}
.trust-row .t:first-child { border-left: none; }
.trust-row .t b { color: var(--leaf); font-family: var(--mono); font-weight: 600; }
.trust-row .t .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--leaf); box-shadow: 0 0 8px var(--leaf); }

/* ---- 硬核 HUD Hero ---- */
.hero-hard {
  position: relative;
  overflow: hidden;
  background: var(--tech-bg);
  color: #fff;
  isolation: isolate;
}
.hero-hard .hh-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: saturate(0.85) brightness(0.42) contrast(1.05);
  transform: scale(1.05);
  z-index: -2;
}
.hero-hard .hh-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(7, 33, 26, 0.96) 8%, rgba(7, 33, 26, 0.7) 48%, rgba(7, 33, 26, 0.35) 100%),
    repeating-linear-gradient(0deg, rgba(124, 185, 46, 0.05) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(90deg, rgba(124, 185, 46, 0.05) 0 1px, transparent 1px 44px);
  z-index: -1;
}
.hero-hard-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 54px;
  align-items: center;
  padding: 92px 0 96px;
}
.hero-hard .hh-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 3px;
  color: var(--leaf);
  border: 1px solid rgba(124, 185, 46, 0.4);
  border-radius: 100px;
  padding: 7px 16px;
  margin-bottom: 26px;
  text-transform: uppercase;
}
.hero-hard .hh-tag::before { content: "●"; font-size: 8px; animation: pulse 1.8s infinite; }
@keyframes pulse { 0%,100% { opacity: 1 } 50% { opacity: 0.25 } }
.hero-hard h1 {
  font-size: clamp(36px, 5vw, 60px);
  line-height: 1.18;
  letter-spacing: 0.01em;
  font-weight: 800;
}
.hero-hard h1 em { font-style: normal; color: var(--leaf); }
.hero-hard h1 .thin { font-weight: 300; color: rgba(255, 255, 255, 0.62); }
.hero-hard p.lead {
  margin-top: 24px;
  font-size: 16.5px;
  color: rgba(255, 255, 255, 0.78);
  max-width: 540px;
  line-height: 1.85;
}
.hero-hard .hero-actions { margin-top: 38px; display: flex; gap: 16px; flex-wrap: wrap; }

/* HUD 监控卡 */
.hud {
  position: relative;
  background: rgba(7, 33, 26, 0.72);
  border: 1px solid rgba(124, 185, 46, 0.35);
  border-radius: 14px;
  padding: 22px 24px 18px;
  backdrop-filter: blur(4px);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.5);
}
.hud .hud-corner {
  position: absolute;
  width: 16px; height: 16px;
  border: 2px solid var(--leaf);
  opacity: 0.85;
}
.hud .hud-corner.tl { top: 9px; left: 9px; border-right: 0; border-bottom: 0; }
.hud .hud-corner.tr { top: 9px; right: 9px; border-left: 0; border-bottom: 0; }
.hud .hud-corner.bl { bottom: 9px; left: 9px; border-right: 0; border-top: 0; }
.hud .hud-corner.br { bottom: 9px; right: 9px; border-left: 0; border-top: 0; }
.hud .hud-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 2px;
  color: rgba(255, 255, 255, 0.55);
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 1px dashed rgba(124, 185, 46, 0.3);
}
.hud .hud-head .live { color: var(--leaf); display: flex; align-items: center; gap: 6px; }
.hud .hud-head .live::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--leaf); box-shadow: 0 0 8px var(--leaf); animation: pulse 1.8s infinite; }
.hud-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.hud-stat {
  background: var(--tech-panel);
  border: 1px solid rgba(124, 185, 46, 0.2);
  border-radius: 9px;
  padding: 14px 14px 12px;
}
.hud-stat .v {
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}
.hud-stat .v .u { font-size: 14px; color: var(--leaf); margin-left: 3px; font-weight: 600; }
.hud-stat .k { margin-top: 7px; font-size: 12.5px; color: rgba(255, 255, 255, 0.6); letter-spacing: 1px; }
.hud-foot {
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.4);
  display: flex;
  justify-content: space-between;
}
.hud-foot .ok { color: var(--leaf); }

/* ---- 区块标题（硬核版） ---- */
.hard-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 14px;
}
.hard-eyebrow::before { content: "//"; color: var(--leaf); font-weight: 700; }
.hard-title {
  font-size: clamp(26px, 3.2vw, 38px);
  font-weight: 800;
  color: var(--primary);
  line-height: 1.25;
  letter-spacing: 0.01em;
}
.hard-sub { margin-top: 14px; font-size: 16px; color: var(--muted); max-width: 640px; line-height: 1.85; }

/* ---- 十万级净化 spec 墙 ---- */
.spec-wrap { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 50px; align-items: center; }
.spec-media { position: relative; border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-md); }
.spec-media img { width: 100%; aspect-ratio: 4 / 3.4; object-fit: cover; }
.spec-media .tag-float {
  position: absolute; left: 16px; bottom: 16px;
  background: rgba(7, 33, 26, 0.82);
  color: #fff; font-family: var(--mono); font-size: 12px; letter-spacing: 1px;
  padding: 8px 14px; border-radius: 8px; border: 1px solid rgba(124,185,46,.4);
}
.spec-media .tag-float b { color: var(--leaf); }
.spec-list { display: grid; gap: 2px; }
.spec-item {
  display: grid;
  grid-template-columns: 132px 1fr;
  gap: 18px;
  align-items: center;
  padding: 15px 4px;
  border-bottom: 1px solid var(--line);
}
.spec-item:last-child { border-bottom: none; }
.spec-item .k {
  font-size: 13.5px;
  color: var(--muted);
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.spec-item .k::before { content: "▸"; color: var(--leaf); }
.spec-item .v { font-size: 16px; color: var(--primary); font-weight: 600; line-height: 1.55; }
.spec-item .v small { font-size: 12.5px; color: var(--muted); font-weight: 400; }

/* 洁净度对比条 */
.cleanbar { margin-top: 30px; }
.cleanbar .cb-head { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 12px; color: var(--muted); letter-spacing: 1px; margin-bottom: 8px; }
.cleanbar .cb-track {
  height: 16px;
  border-radius: 100px;
  background: linear-gradient(90deg, #c9a24a 0%, #7CB92E 55%, #1B6E4B 100%);
  position: relative;
  box-shadow: inset 0 1px 3px rgba(0,0,0,.15);
}
.cleanbar .cb-marker {
  position: absolute; top: -7px; transform: translateX(-50%);
  background: var(--primary); color: #fff; font-family: var(--mono); font-size: 11px;
  padding: 3px 9px; border-radius: 6px; white-space: nowrap;
}
.cleanbar .cb-marker::after { content:""; position:absolute; left:50%; bottom:-5px; transform:translateX(-50%); border:5px solid transparent; border-top-color: var(--primary); }
.cleanbar .cb-scale { display: flex; justify-content: space-between; margin-top: 12px; font-size: 12px; color: var(--muted); }
.cleanbar .cb-scale span b { color: var(--leaf); font-family: var(--mono); }

/* ---- 产线矩阵 ---- */
.matrix-band { background: var(--tech-bg); color: #fff; }
.matrix-band .hard-eyebrow { color: var(--accent-light); }
.matrix-band .hard-title { color: #fff; }
.matrix-band .hard-sub { color: rgba(255,255,255,.7); }
.matrix-grid {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.matrix-cell {
  position: relative;
  border: 1px solid rgba(124, 185, 46, 0.22);
  border-radius: 12px;
  padding: 22px 20px;
  background: rgba(124, 185, 46, 0.05);
  overflow: hidden;
  transition: transform 0.25s, border-color 0.25s, background 0.25s;
}
.matrix-cell:hover { transform: translateY(-4px); border-color: var(--leaf); background: rgba(124, 185, 46, 0.12); }
.matrix-cell .no { font-family: var(--mono); font-size: 12px; color: var(--leaf); letter-spacing: 2px; }
.matrix-cell h4 { margin-top: 10px; font-size: 18px; color: #fff; }
.matrix-cell p { margin-top: 6px; font-size: 12.5px; color: rgba(255,255,255,.6); line-height: 1.6; }
.matrix-cell .line {
  position: absolute; right: -20px; top: -20px;
  width: 70px; height: 70px;
  border: 1px solid rgba(124,185,46,.25); border-radius: 50%;
}
.matrix-cell .line::after { content:""; position:absolute; inset:14px; border:1px solid rgba(124,185,46,.18); border-radius:50%; }

/* ---- 品控全链路流程 ---- */
.qc-flow { margin-top: 44px; position: relative; }
.qc-track {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
}
.qc-step {
  position: relative;
  padding: 26px 18px 0;
  text-align: center;
}
.qc-step::before {
  content: "";
  position: absolute;
  top: 9px; left: 50%;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--leaf), var(--accent));
  opacity: 0.4;
}
.qc-step:last-child::before { display: none; }
.qc-node {
  position: relative;
  z-index: 1;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--leaf);
  margin: 0 auto 16px;
}
.qc-step h4 { font-size: 15.5px; color: var(--primary); }
.qc-step p { font-size: 12.5px; color: var(--muted); margin-top: 6px; }
.qc-step .chk { display:inline-block; margin-top:8px; font-family:var(--mono); font-size:11px; color: var(--leaf); letter-spacing:1px; }

/* ---- 资质墙 ---- */
.cert-wall { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
.cert-wall .certs-img { border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-md); }
.cert-wall .certs-img img { width: 100%; display: block; }
.cert-badges { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 24px; }
.cert-badge {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 18px;
  background: var(--surface);
  display: flex; gap: 12px; align-items: center;
}
.cert-badge .mk { flex:0 0 34px; height:34px; border-radius:8px; background: linear-gradient(150deg, var(--primary), var(--primary-light)); color:#fff; display:grid; place-items:center; font-family:var(--mono); font-size:13px; }
.cert-badge h5 { font-size: 14.5px; color: var(--primary); }
.cert-badge p { font-size: 12px; color: var(--muted); margin-top: 2px; }

/* ============================================================
   首页 v2 响应式
   ============================================================ */
@media (max-width: 1024px) {
  .hero-hard-inner { grid-template-columns: 1fr; gap: 40px; }
  .spec-wrap { grid-template-columns: 1fr; gap: 34px; }
  .matrix-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-wall { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 820px) {
  .hero-hard-inner { padding: 64px 0 70px; }
  .qc-track { grid-template-columns: repeat(3, 1fr); row-gap: 30px; }
  .qc-step:nth-child(3)::before { display: none; }
  .trust-row .t { padding: 0 16px; font-size: 13px; }
}
@media (max-width: 560px) {
  .hud-grid { grid-template-columns: 1fr 1fr; }
  .matrix-grid { grid-template-columns: 1fr; }
  .cert-badges { grid-template-columns: 1fr; }
  .qc-track { grid-template-columns: 1fr 1fr; }
  .qc-step:nth-child(3)::before { display: block; }
  .qc-step:nth-child(2)::before { display: none; }
  .spec-item { grid-template-columns: 1fr; gap: 4px; }
}

/* ============================================================
   全站主线 A · 本草溯源 × AI 智造
   从首页内联迁移为全局通用组件（深色基底 + 玻璃拟态 + 鲜绿点缀）
   ============================================================ */

/* ---- 通用深色区块 / 玻璃卡 ---- */
.dark-section { background: linear-gradient(180deg, #0A2E21, #07211A); color: #eaf6ee; }
.dark-section .section-title, .dark-section .hard-title { color: #fff; }
.dark-section .section-sub { color: rgba(255, 255, 255, 0.68); }
.glass-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(124, 185, 46, 0.22);
  border-radius: 16px;
  padding: 26px 24px;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}
.glass-card::before {
  content: "";
  position: absolute; top: 0; left: 0; width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--leaf), transparent);
}
.glass-card .ico {
  font-size: 24px; color: var(--leaf);
  width: 46px; height: 46px; border-radius: 10px;
  display: grid; place-items: center;
  background: rgba(124, 185, 46, 0.12); margin-bottom: 14px;
}
.glass-card h4 { color: #fff; font-size: 18px; }
.glass-card p { color: rgba(234, 246, 238, 0.72); font-size: 14px; margin-top: 8px; line-height: 1.7; }
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 40px; }
@media (max-width: 760px) { .feature-grid { grid-template-columns: 1fr; } }

/* ---- Hero 粒子数据流（首页 / 可复用） ---- */
.hero-ai { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(124, 185, 46, .16), transparent 60%),
    radial-gradient(900px 500px at 10% 110%, rgba(176, 138, 62, .14), transparent 55%),
    linear-gradient(160deg, #07211A 0%, #0E3A2A 55%, #082B1E 100%); }
#aiCanvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; z-index: 0; opacity: .9; }
.hero-ai .container { position: relative; z-index: 2; padding-top: 120px; padding-bottom: 80px; }
.hero-tag { display: inline-flex; align-items: center; gap: 10px; font-size: 13px; letter-spacing: 3px;
  color: var(--leaf); border: 1px solid rgba(124, 185, 46, .35); padding: 7px 16px; border-radius: 30px;
  background: rgba(124, 185, 46, .07); margin-bottom: 26px; }
.hero-tag b { color: var(--accent-light); font-weight: 600; }
.hero-ai h1 { font-family: var(--serif); font-size: clamp(38px, 6.4vw, 82px); line-height: 1.08; color: #fff; font-weight: 800; letter-spacing: 1px; }
.hero-ai h1 .grad { background: linear-gradient(100deg, #7CB92E 0%, #D8B978 60%, #7CB92E 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-ai .sub { margin-top: 22px; font-size: clamp(15px, 1.6vw, 19px); color: rgba(234, 246, 238, .82); max-width: 620px; line-height: 1.8; }
.hero-ai .sub b { color: var(--leaf); font-weight: 600; }
.hero-cta { margin-top: 38px; display: flex; gap: 16px; flex-wrap: wrap; }
.hero-ai .btn-gold { background: linear-gradient(135deg, #B08A3E, #D8B978); color: #0E3A2A; border: none; padding: 14px 30px; border-radius: 40px; font-weight: 700; font-size: 16px; }
.hero-ai .btn-line { border: 1px solid rgba(124, 185, 46, .5); color: #eaf6ee; padding: 14px 30px; border-radius: 40px; font-weight: 600; background: rgba(124, 185, 46, .06); }
.hero-hud { position: absolute; right: 6%; top: 50%; transform: translateY(-50%); z-index: 2; display: none; }
@media (min-width: 1100px) { .hero-hud { display: block; } }
.hero-hud .hk { font-family: var(--mono); font-size: 12px; color: var(--leaf); border: 1px solid rgba(124, 185, 46, .3);
  background: rgba(7, 33, 26, .55); backdrop-filter: blur(8px); border-radius: 10px; padding: 10px 14px; margin-bottom: 10px; }
.hero-hud .hk span { color: rgba(234, 246, 238, .6); }
.hero-scroll { position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%); z-index: 2; color: rgba(234, 246, 238, .6); font-size: 12px; letter-spacing: 2px; text-align: center; }
.hero-scroll .mouse { width: 22px; height: 36px; border: 1.5px solid rgba(124, 185, 46, .5); border-radius: 14px; margin: 0 auto 8px; position: relative; }
.hero-scroll .mouse::after { content: ""; position: absolute; left: 50%; top: 7px; width: 3px; height: 7px; background: var(--leaf); border-radius: 3px; transform: translateX(-50%); animation: aiScroll 1.6s infinite; }
@keyframes aiScroll { 0% { opacity: 0; top: 7px } 40% { opacity: 1 } 80% { opacity: 0; top: 18px } 100% { opacity: 0 } }

/* ---- 玻璃数据条 ---- */
.glass-strip { background: linear-gradient(180deg, #0E3A2A, #0A2E21); padding: 0; }
.glass-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 34px 0; }
.glass-stat { background: rgba(255, 255, 255, .05); border: 1px solid rgba(124, 185, 46, .22); border-radius: 16px; padding: 24px 20px;
  backdrop-filter: blur(10px); position: relative; overflow: hidden; }
.glass-stat::before { content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 2px; background: linear-gradient(90deg, var(--leaf), transparent); }
.glass-stat .v { font-family: var(--serif); font-size: clamp(30px, 4vw, 46px); color: #fff; font-weight: 800; line-height: 1; }
.glass-stat .v .u { font-size: 18px; color: var(--leaf); margin-left: 4px; font-family: var(--sans); }
.glass-stat .k { margin-top: 10px; color: rgba(234, 246, 238, .7); font-size: 14px; }
@media (max-width: 860px) { .glass-row { grid-template-columns: repeat(2, 1fr); } }

/* ---- 滚动叙事溯源线 ---- */
.story { background: var(--bg); }
.story-head { max-width: 720px; }
.story-line { position: relative; margin-top: 50px; padding-left: 46px; }
.story-line::before { content: ""; position: absolute; left: 14px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(180deg, var(--leaf), var(--line)); }
.story-step { position: relative; margin-bottom: 46px; opacity: 0; transform: translateY(30px); transition: .7s ease; }
.story-step.in { opacity: 1; transform: none; }
.story-step .node { position: absolute; left: -46px; top: 4px; width: 30px; height: 30px; border-radius: 50%; background: #fff; border: 2px solid var(--leaf);
  display: flex; align-items: center; justify-content: center; font-family: var(--serif); font-weight: 800; color: var(--primary); z-index: 2; }
.story-step .node.on { background: var(--leaf); color: #0E3A2A; box-shadow: 0 0 0 6px rgba(124, 185, 46, .18); }
.story-card { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; align-items: center; background: var(--surface); border: 1px solid var(--line);
  border-radius: 18px; padding: 22px; box-shadow: var(--shadow-sm); }
.story-card .ph { border-radius: 14px; overflow: hidden; aspect-ratio: 4 / 3; background: var(--bg-alt); }
.story-card .ph img { width: 100%; height: 100%; object-fit: cover; transition: .6s; }
.story-step.in .ph img { transform: scale(1.02); }
.story-card h3 { font-size: 22px; color: var(--primary); }
.story-card .tag { display: inline-block; font-size: 12px; color: var(--leaf); border: 1px solid rgba(124, 185, 46, .4); border-radius: 20px; padding: 3px 12px; margin-bottom: 10px; }
.story-card p { color: var(--muted); margin-top: 10px; }
.story-card .metric { margin-top: 14px; font-family: var(--mono); font-size: 13px; color: var(--accent); }
@media (max-width: 760px) { .story-card { grid-template-columns: 1fr; } }

/* ---- 产品 3D 矩阵 ---- */
.prod-3d { background: linear-gradient(180deg, #0A2E21, #07211A); }
.prod-3d .section-title { color: #fff; }
.prod-3d .section-sub { color: rgba(255, 255, 255, .65); }
.prod-grid3d { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 46px; }
@media (max-width: 900px) { .prod-grid3d { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .prod-grid3d { grid-template-columns: 1fr; } }
.tilt { position: relative; transform-style: preserve-3d; transition: transform .15s ease, box-shadow .3s; background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(124, 185, 46, .25); border-radius: 18px; overflow: hidden; will-change: transform; }
.tilt:hover { box-shadow: 0 26px 60px rgba(0, 0, 0, .5); }
.tilt img { width: 100%; height: 200px; object-fit: cover; }
.tilt .body { padding: 18px 20px 22px; }
.tilt .body .cat { font-size: 12px; color: var(--leaf); letter-spacing: 2px; }
.tilt .body h4 { color: #fff; font-size: 19px; margin: 8px 0 6px; }
.tilt .body p { color: rgba(234, 246, 238, .66); font-size: 13.5px; }
.tilt .glow { position: absolute; inset: 0; background: radial-gradient(300px circle at var(--mx, 50%) var(--my, 50%), rgba(124, 185, 46, .18), transparent 60%); opacity: 0; transition: .3s; }
.tilt:hover .glow { opacity: 1; }

/* ---- 品控网格 ---- */
.qc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 40px; }
@media (max-width: 820px) { .qc-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .qc-grid { grid-template-columns: 1fr; } }
.qc-card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 22px; box-shadow: var(--shadow-sm); }
.qc-card .n { font-family: var(--mono); color: var(--leaf); font-size: 13px; }
.qc-card h4 { color: var(--primary); margin: 8px 0 6px; }
.qc-card p { color: var(--muted); font-size: 14px; }

/* ---- FAQ（A 卡片式，全局优先） ---- */
.faq-band { background: var(--bg-alt); }
.faq-list { margin-top: 36px; max-width: 840px; }
.faq-item { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; margin-bottom: 14px; overflow: hidden; }
.faq-item summary { cursor: pointer; padding: 18px 22px; font-weight: 700; color: var(--primary); list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--leaf); font-size: 22px; }
.faq-item[open] summary::after { content: "−"; }
.faq-item .ans { padding: 0 22px 18px; color: var(--muted); }

/* ---- 居中对齐工具 ---- */
.center { text-align: center; }
.center .section-sub { margin-left: auto; margin-right: auto; }