/* ============================================================
   AuraPept Biosciences — Global Design System
   生物科技临床风 · 深青绿 + 深海蓝 · Space Grotesk + Inter
   ============================================================ */

:root {
  /* 色板 */
  --primary: #0B6E6B;          /* 主色：深青绿 */
  --primary-dark: #08524F;
  --primary-deep: #064240;
  --accent: #17B8A6;           /* 强调：亮青绿 */
  --accent-soft: #D9F2EF;
  --deep: #0A2540;             /* 深海蓝：深色背景 */
  --deep-2: #123355;
  --bg: #F6FAFB;               /* 页面浅背景 */
  --surface: #FFFFFF;
  --text: #12222E;
  --text-muted: #5A6B7A;
  --text-faint: #8CA0AF;
  --border: #E1EAF0;
  --success: #2E9E6B;
  --warning: #E8A33D;
  --danger: #D9534F;

  /* 字体 */
  --font-head: 'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, sans-serif;

  /* 尺寸 */
  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(10, 37, 64, .06);
  --shadow-md: 0 8px 28px rgba(10, 37, 64, .10);
  --shadow-lg: 0 18px 50px rgba(10, 37, 64, .16);
  --container: 1200px;
  --header-h: 64px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  color: var(--deep);
  line-height: 1.25;
  letter-spacing: -.01em;
}

a { color: var(--primary); text-decoration: none; transition: color .18s; }
a:hover { color: var(--accent); }

img { max-width: 100%; display: block; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: 999px; border: none; cursor: pointer;
  font-family: var(--font-head); font-weight: 600; font-size: 15px;
  transition: all .2s ease; text-decoration: none; line-height: 1.2;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 6px 18px rgba(11,110,107,.28); }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-light { background: #fff; color: var(--deep); }
.btn-light:hover { background: var(--accent-soft); color: var(--deep); }
.btn-sm { padding: 8px 18px; font-size: 13.5px; }
.btn-block { width: 100%; }

/* ---------- 徽章 ---------- */
.badge {
  display: inline-block; padding: 4px 12px; border-radius: 999px;
  font-size: 12px; font-weight: 600; font-family: var(--font-head);
  background: var(--accent-soft); color: var(--primary-dark);
}
.badge-green { background: #E3F5EC; color: var(--success); }
.badge-gold { background: #FCF0DC; color: var(--warning); }

/* ---------- 顶部工具条 ---------- */
.topbar {
  background: var(--deep); color: #CFE0EC; font-size: 13.5px;
}
.topbar-inner {
  max-width: var(--container); margin: 0 auto; padding: 7px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.topbar a { color: #CFE0EC; }
.topbar a:hover { color: var(--accent); }
.topbar-left, .topbar-right { display: flex; align-items: center; gap: 18px; }
.topbar .search-form { display: flex; align-items: center; gap: 6px; }
.topbar .search-form input {
  background: rgba(255,255,255,.10); border: 1px solid rgba(255,255,255,.18);
  border-radius: 999px; padding: 5px 14px; color: #fff; font-size: 13px; width: 180px; outline: none;
}
.topbar .search-form input::placeholder { color: #8CA0AF; }
.topbar .search-form input:focus { border-color: var(--accent); }
.lang-btn, .topbar-btn {
  background: none; border: none; color: #CFE0EC; cursor: pointer;
  font-size: 13.5px; font-family: var(--font-body); display: inline-flex; align-items: center; gap: 5px;
}
.lang-btn:hover, .topbar-btn:hover { color: var(--accent); }

/* ---------- 导航 ---------- */
.site-header {
  background: var(--surface); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow-sm);
}
.header-inner {
  max-width: var(--container); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; height: var(--header-h);
}
.logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-head); font-weight: 700; font-size: 20px; color: var(--deep); }
.logo .logo-mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px;
}
.logo span em { font-style: normal; color: var(--primary); }

.nav { display: flex; align-items: center; gap: 4px; }
.nav > li { list-style: none; position: relative; }
.nav > li > a, .nav-toggle-btn {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 10px 14px; border-radius: var(--radius-sm);
  color: var(--text); font-weight: 500; font-size: 15px; cursor: pointer;
}
.nav > li > a:hover, .nav-toggle-btn:hover { color: var(--primary); background: var(--accent-soft); }

.dropdown { position: absolute; top: 100%; left: 0; min-width: 320px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-lg); padding: 10px; display: none; z-index: 200; }
.dropdown.open { display: block; }
.dropdown a { display: block; padding: 9px 14px; border-radius: var(--radius-sm); color: var(--text); font-size: 14px; }
.dropdown a:hover { background: var(--accent-soft); color: var(--primary); }
.dropdown a .d-label { font-weight: 600; }
.dropdown a .d-sub { display: block; font-size: 12px; color: var(--text-faint); }

.hamburger { display: none; background: none; border: none; font-size: 24px; color: var(--deep); cursor: pointer; }

/* 移动端菜单 */
.mobile-menu {
  display: none; position: fixed; inset: 0; background: var(--surface); z-index: 300; padding: 24px; overflow-y: auto;
}
.mobile-menu.open { display: block; }
.mobile-menu a.mm-link { display: block; padding: 14px 0; border-bottom: 1px solid var(--border); font-weight: 600; color: var(--deep); }
.mobile-menu .mm-sub { padding-left: 16px; }
.mobile-menu .mm-sub a { display: block; padding: 10px 0; color: var(--text-muted); font-size: 14.5px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 85% -10%, rgba(23,184,166,.22), transparent 60%),
    radial-gradient(ellipse 60% 50% at -10% 110%, rgba(11,110,107,.18), transparent 55%),
    linear-gradient(160deg, var(--deep) 0%, var(--deep-2) 60%, #0E2A4A 100%);
  color: #EAF3F7; padding: 96px 0 88px;
}
.hero::after {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size: 44px 44px;
}
.hero .container { position: relative; z-index: 2; text-align: center; max-width: 860px; }
.hero h1 { color: #fff; font-size: clamp(34px, 5vw, 56px); margin: 18px 0 16px; }
.hero .hero-sub { font-size: clamp(16px, 2vw, 19px); color: #A9C4D8; max-width: 680px; margin: 0 auto 32px; }
.hero .hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero .hero-meta { margin-top: 40px; display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; }
.hero .hero-meta .hm-item { text-align: center; }
.hero .hero-meta .hm-num { font-family: var(--font-head); font-size: 30px; font-weight: 700; color: var(--accent); }
.hero .hero-meta .hm-label { font-size: 13px; color: #8CA9BE; text-transform: uppercase; letter-spacing: .06em; }

/* ---------- 区块通用 ---------- */
.section { padding: 84px 0; }
.section-alt { background: var(--surface); }
.section-deep { background: linear-gradient(165deg, var(--deep), var(--deep-2)); color: #D8E6F0; }
.section-deep h2, .section-deep h3 { color: #fff; }
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.sec-head .kicker { font-family: var(--font-head); font-size: 13px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--primary); }
.sec-head h2 { font-size: clamp(28px, 3.6vw, 40px); margin: 10px 0 14px; }
.sec-head p { color: var(--text-muted); font-size: 16.5px; }
.section-deep .sec-head .kicker { color: var(--accent); }
.section-deep .sec-head p { color: #A9C4D8; }

/* 卖点卡片 */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 24px; text-align: center; transition: all .25s ease; position: relative; overflow: hidden;
}
.feature-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--primary), var(--accent)); opacity: 0; transition: opacity .25s; }
.feature-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.feature-card:hover::before { opacity: 1; }
.feature-card .fc-icon { width: 58px; height: 58px; margin: 0 auto 16px; border-radius: 16px; background: var(--accent-soft); display: flex; align-items: center; justify-content: center; font-size: 26px; }
.feature-card h3 { font-size: 18px; margin-bottom: 8px; }
.feature-card p { font-size: 14.5px; color: var(--text-muted); }

/* 商品卡片 */
.products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.product-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: all .25s ease; display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: var(--accent); }
.product-card .pc-img { height: 200px; background: linear-gradient(150deg, #0E2A4A, #0A2540); display: flex; align-items: center; justify-content: center; font-size: 52px; position: relative; overflow: hidden; }
.product-card .pc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
.product-card:hover .pc-img img { transform: scale(1.04); }
.product-card .pc-status { position: absolute; top: 12px; left: 12px; }
.product-card .pc-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.product-card .pc-cat { font-size: 12px; font-weight: 600; color: var(--primary); text-transform: uppercase; letter-spacing: .05em; }
.product-card h3 { font-size: 17px; margin: 6px 0 8px; }
.product-card .pc-spec { font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }
.product-card .pc-desc { font-size: 13.5px; color: var(--text-muted); flex: 1; }
.product-card .pc-price { display: flex; align-items: baseline; gap: 6px; margin: 8px 0 10px; }
.pc-price .pcp-from { font-size: 12px; color: var(--text-faint); }
.pc-price .pcp-num { font-family: var(--font-head); font-size: 22px; font-weight: 700; color: var(--primary); }
.pc-price .pcp-tiers { font-size: 11.5px; color: var(--primary-dark); background: var(--accent-soft); padding: 2px 8px; border-radius: 999px; margin-left: auto; }

/* 规格价格表 */
.variant-table { width: 100%; border-collapse: collapse; margin-bottom: 8px; font-size: 14px; }
.variant-table thead th { text-align: left; padding: 10px 12px; background: var(--accent-soft); color: var(--primary-dark); font-family: var(--font-head); font-size: 12.5px; text-transform: uppercase; letter-spacing: .05em; }
.variant-table thead th:first-child { border-radius: var(--radius-sm) 0 0 0; }
.variant-table thead th:last-child { border-radius: 0 var(--radius-sm) 0 0; text-align: right; }
.variant-table td { padding: 11px 12px; border-bottom: 1px solid var(--border); }
.variant-table td code { background: #F1F5F8; padding: 2px 8px; border-radius: 4px; font-size: 12.5px; color: var(--deep); }
.variant-table .vt-price { text-align: right; font-family: var(--font-head); font-weight: 700; color: var(--primary); }
.variant-table tbody tr:hover { background: #FAFCFD; }
.product-card .pc-foot { display: flex; gap: 10px; margin-top: 16px; }

/* 数据条 */
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-item { text-align: center; padding: 28px 16px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.10); border-radius: var(--radius); }
.stat-item .st-num { font-family: var(--font-head); font-size: 40px; font-weight: 700; color: var(--accent); }
.stat-item .st-label { color: #A9C4D8; font-size: 14px; margin-top: 6px; }

/* 服务卡片（About） */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 34px 28px; transition: all .25s; }
.service-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.service-card .sc-icon { font-size: 34px; margin-bottom: 16px; }
.service-card h3 { font-size: 19px; margin-bottom: 10px; }
.service-card p { color: var(--text-muted); font-size: 14.5px; }

/* 质量承诺 */
.quality-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.quality-item { background: var(--surface); border-radius: var(--radius); border: 1px solid var(--border); padding: 26px 22px; display: flex; gap: 14px; align-items: flex-start; }
.quality-item .qi-icon { font-size: 24px; flex-shrink: 0; }
.quality-item h4 { font-size: 16px; margin-bottom: 4px; }
.quality-item p { font-size: 13.5px; color: var(--text-muted); }

/* 销售团队 */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.team-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; text-align: center; transition: all .2s; }
.team-card:hover { box-shadow: var(--shadow-md); }
.team-card .tc-avatar {
  width: 64px; height: 64px; margin: 0 auto 12px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff;
  display: flex; align-items: center; justify-content: center; font-family: var(--font-head); font-size: 22px; font-weight: 700;
}
.team-card .tc-avatar.tc-photo { width: 96px; height: 96px; overflow: hidden; padding: 0; background: var(--accent-soft); box-shadow: 0 4px 14px rgba(10,37,64,.12); }
.team-card .tc-avatar.tc-photo img { width: 100%; height: 100%; object-fit: cover; }
.team-card h4 { font-size: 16px; }
.team-card .tc-role { font-size: 13px; color: var(--text-muted); margin: 2px 0 10px; }
.team-card .tc-mail { font-size: 13px; }

/* 证书墙 */
.cert-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 16px; }
.cert-item {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 12px; text-align: center; cursor: pointer; transition: all .2s;
}
.cert-item:hover { border-color: var(--accent); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.cert-item .ct-badge { font-family: var(--font-head); font-weight: 700; font-size: 17px; color: var(--deep); }
.cert-item .ct-actions { margin-top: 8px; display: flex; justify-content: center; gap: 10px; font-size: 12.5px; }

/* 新闻卡片 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; transition: all .25s; display: flex; flex-direction: column; }
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.news-card .nc-tag { font-size: 12px; font-weight: 700; color: var(--primary); text-transform: uppercase; letter-spacing: .08em; }
.news-card h3 { font-size: 17px; margin: 10px 0 8px; }
.news-card p { font-size: 13.5px; color: var(--text-muted); flex: 1; }
.news-card .nc-meta { margin-top: 14px; font-size: 12.5px; color: var(--text-faint); display: flex; justify-content: space-between; }

/* FAQ 手风琴 */
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 12px; overflow: hidden; }
.faq-item .faq-q { width: 100%; background: none; border: none; text-align: left; padding: 18px 22px; font-family: var(--font-head); font-weight: 600; font-size: 15.5px; color: var(--deep); cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.faq-item .faq-q .faq-arrow { transition: transform .2s; color: var(--primary); flex-shrink: 0; }
.faq-item.open .faq-q .faq-arrow { transform: rotate(45deg); }
.faq-item .faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-item .faq-a-inner { padding: 0 22px 20px; color: var(--text-muted); font-size: 14.5px; }
.faq-item.open .faq-a { max-height: 600px; }

/* 询盘表单 */
.quote-box { max-width: 640px; margin: 0 auto; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow-sm); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-size: 13.5px; font-weight: 600; color: var(--deep); }
.form-field input, .form-field select, .form-field textarea {
  padding: 12px 14px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  font-family: var(--font-body); font-size: 14.5px; color: var(--text); background: #FBFDFE; outline: none; transition: border-color .2s;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { border-color: var(--primary); }
.form-field textarea { min-height: 130px; resize: vertical; }
.form-note { grid-column: 1 / -1; font-size: 13px; color: var(--text-faint); text-align: center; }
.form-success { grid-column: 1 / -1; display: none; text-align: center; padding: 14px; border-radius: var(--radius-sm); background: #E3F5EC; color: var(--success); font-weight: 600; }
.form-success.show { display: block; }
.form-error { grid-column: 1 / -1; display: none; text-align: center; padding: 12px; border-radius: var(--radius-sm); background: #FDEBEA; color: var(--danger); font-size: 14px; }
.form-error.show { display: block; }

/* ---------- 页面头部（内页） ---------- */
.page-hero { background: linear-gradient(150deg, var(--deep), var(--deep-2)); color: #EAF3F7; padding: 64px 0; }
.page-hero .ph-crumb { font-size: 13.5px; color: #8CA9BE; margin-bottom: 10px; }
.page-hero .ph-crumb a { color: var(--accent); }
.page-hero h1 { color: #fff; font-size: clamp(30px, 4vw, 44px); }
.page-hero p { color: #A9C4D8; margin-top: 10px; max-width: 640px; }

/* ---------- 分类筛选 ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; justify-content: center; }
.filter-chip {
  padding: 9px 20px; border-radius: 999px; border: 1.5px solid var(--border);
  background: var(--surface); color: var(--text-muted); font-size: 14px; cursor: pointer;
  font-family: var(--font-body); font-weight: 500; transition: all .18s;
}
.filter-chip:hover { border-color: var(--primary); color: var(--primary); }
.filter-chip.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.count-note { text-align: center; color: var(--text-faint); font-size: 14px; margin-bottom: 24px; }

/* ---------- 商品详情 ---------- */
.detail-wrap { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: start; }
.detail-visual {
  background: linear-gradient(150deg, #0E2A4A, #0A2540);
  border-radius: var(--radius); min-height: 420px; display: flex; align-items: center; justify-content: center;
  font-size: 120px; position: sticky; top: calc(var(--header-h) + 24px); border: 1px solid var(--border); overflow: hidden;
}
.detail-visual img { width: 100%; height: 100%; object-fit: cover; }
.detail-info .di-title { font-size: clamp(26px, 3vw, 36px); margin: 10px 0 6px; }
.detail-info .di-lead { font-size: 17px; color: var(--text-muted); margin-bottom: 20px; }
.spec-table { width: 100%; border-collapse: collapse; margin: 18px 0; }
.spec-table td { padding: 11px 14px; border-bottom: 1px solid var(--border); font-size: 14.5px; }
.spec-table td:first-child { color: var(--text-faint); width: 38%; font-weight: 600; }
.spec-table tr:last-child td { border-bottom: none; }

.tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--border); margin: 28px 0 22px; }
.tab-btn { background: none; border: none; padding: 12px 22px; font-family: var(--font-head); font-weight: 600; font-size: 15px; color: var(--text-muted); cursor: pointer; border-bottom: 3px solid transparent; margin-bottom: -2px; }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.tab-panel ul { padding-left: 20px; color: var(--text-muted); }
.tab-panel li { margin-bottom: 8px; }
.coa-box { background: var(--accent-soft); border: 1px solid var(--accent); border-radius: var(--radius-sm); padding: 18px 22px; margin-top: 16px; }
.coa-box h4 { color: var(--primary-dark); margin-bottom: 6px; }

/* 关键词标签 */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.tag-chip { padding: 8px 18px; border-radius: 999px; background: var(--surface); border: 1.5px solid var(--border); color: var(--text); font-size: 14px; transition: all .18s; }
.tag-chip:hover { border-color: var(--accent); color: var(--primary); background: var(--accent-soft); }

/* ---------- 弹窗 ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(6,20,34,.62); backdrop-filter: blur(3px);
  display: none; align-items: center; justify-content: center; z-index: 500; padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: #fff; border-radius: var(--radius); width: 100%; max-width: 430px;
  padding: 34px; box-shadow: var(--shadow-lg); position: relative; max-height: 92vh; overflow-y: auto;
}
.modal .modal-close { position: absolute; top: 14px; right: 16px; background: none; border: none; font-size: 20px; color: var(--text-faint); cursor: pointer; }
.modal h3 { font-size: 20px; margin-bottom: 6px; }
.modal .modal-sub { font-size: 13.5px; color: var(--text-muted); margin-bottom: 20px; }
.modal .form-field { margin-bottom: 14px; }

/* 证书灯箱 */
.lightbox-overlay { position: fixed; inset: 0; background: rgba(6,20,34,.85); display: none; align-items: center; justify-content: center; z-index: 600; padding: 24px; }
.lightbox-overlay.open { display: flex; }
.lightbox { background: #fff; border-radius: var(--radius); padding: 28px; max-width: 480px; width: 100%; text-align: center; }
.lightbox .lb-title { font-family: var(--font-head); font-weight: 700; font-size: 20px; margin-bottom: 8px; color: var(--deep); }
.lightbox .lb-note { color: var(--text-muted); font-size: 14px; margin-bottom: 18px; }
.lightbox .lb-visual { height: 220px; border-radius: var(--radius-sm); background: linear-gradient(150deg, var(--accent-soft), #EAF4F7); display: flex; align-items: center; justify-content: center; font-size: 72px; margin-bottom: 18px; }

/* 搜索下拉 */
.search-drop {
  position: fixed; z-index: 400; background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-lg); width: 420px; max-width: 92vw;
  max-height: 70vh; overflow-y: auto; display: none; padding: 10px;
}
.search-drop.open { display: block; }
.search-drop .sd-tab { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 8px; }
.search-drop .sd-tab button { background: none; border: none; padding: 8px 14px; font-weight: 600; font-size: 13.5px; color: var(--text-muted); cursor: pointer; border-bottom: 2px solid transparent; }
.search-drop .sd-tab button.active { color: var(--primary); border-bottom-color: var(--primary); }
.search-drop .sd-item { display: block; padding: 10px 12px; border-radius: var(--radius-sm); color: var(--text); }
.search-drop .sd-item:hover { background: var(--accent-soft); color: var(--primary); }
.search-drop .sd-item small { display: block; color: var(--text-faint); font-size: 12px; }
.search-drop .sd-empty { padding: 18px; text-align: center; color: var(--text-faint); font-size: 14px; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--deep); color: #A9C4D8; padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-grid h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-grid a { display: block; color: #A9C4D8; font-size: 14px; padding: 5px 0; }
.footer-grid a:hover { color: var(--accent); }
.footer-grid p { font-size: 14px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.09); padding: 18px 0; text-align: center; font-size: 13px; color: #6E8AA0; }

/* 悬浮按钮 */
.floating-buttons { position: fixed; right: 22px; bottom: 22px; z-index: 350; display: flex; flex-direction: column; gap: 12px; }
.float-btn {
  width: 50px; height: 50px; border-radius: 50%; border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center; font-size: 20px;
  box-shadow: var(--shadow-md); transition: all .2s; background: var(--primary); color: #fff;
}
.float-btn:hover { transform: translateY(-3px); background: var(--primary-dark); }
.float-btn.top { background: var(--deep); }

/* ---------- 空状态 ---------- */
.empty-state { text-align: center; padding: 70px 20px; color: var(--text-muted); }
.empty-state .es-icon { font-size: 56px; margin-bottom: 14px; }
.empty-state h3 { margin-bottom: 8px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .feature-grid, .products-grid, .quality-grid { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .detail-wrap { grid-template-columns: 1fr; }
  .detail-visual { position: static; min-height: 260px; font-size: 80px; }
  .topbar .search-form { display: none; }
}
@media (max-width: 720px) {
  .nav { display: none; }
  .hamburger { display: block; }
  .feature-grid, .products-grid, .service-grid, .quality-grid, .news-grid, .team-grid, .stats-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .form-grid { grid-template-columns: 1fr; }
  .hero { padding: 64px 0; }
  .section { padding: 60px 0; }
  .quote-box { padding: 26px 20px; }
  .topbar-left { display: none; }
  .topbar-inner { justify-content: flex-end; }
}

/* 动画 */
@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
.fade-up { animation: fadeUp .55s ease both; }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Hui-Peptide 品牌标识 ---------- */
.logo .logo-img { width: 40px; height: 40px; object-fit: contain; flex-shrink: 0; }
.site-footer .logo .logo-img { filter: drop-shadow(0 0 6px rgba(255,255,255,.18)); }

/* WhatsApp 悬浮按钮 */
.float-btn.wa { background: #25D366; color: #fff; }
.float-btn.wa:hover { background: #1FAF52; }
.float-btn.wa svg { display: block; }

@media (max-width: 720px) {
  .logo .logo-img { width: 34px; height: 34px; }
}

/* ---------- 询价制 / 标签页 / 法务页 ---------- */
.pc-price .pcp-ask { font-family: var(--font-head); font-size: 14px; font-weight: 600; color: var(--primary); }
.variant-table .vt-ask { text-align: right; }
.variant-table .vt-ask a { font-family: var(--font-head); font-weight: 600; font-size: 13px; color: var(--primary); }
.variant-table .vt-ask a:hover { color: var(--accent); text-decoration: underline; }

.price-cta {
  margin: 22px 0 8px; padding: 22px 24px; border-radius: var(--radius);
  background: var(--accent-soft); border: 1px solid var(--accent);
  display: flex; gap: 18px; align-items: center; flex-wrap: wrap; justify-content: space-between;
}
.price-cta .pcta-text strong { display: block; font-family: var(--font-head); font-size: 16.5px; color: var(--primary-dark); }
.price-cta .pcta-text span { font-size: 13.5px; color: var(--text-muted); }
.price-cta .pcta-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.detail-sublinks { margin-top: 18px; font-size: 13px; color: var(--text-faint); }
.detail-sublinks a { color: var(--text-muted); }
.detail-sublinks a:hover { color: var(--primary); }

.tag-views { font-size: 13.5px; color: #8CA9BE; }

.legal-doc { max-width: 820px; }
.legal-doc h2 { font-size: 20px; margin: 32px 0 10px; }
.legal-doc h2:first-child { margin-top: 0; }
.legal-doc p { color: var(--text-muted); font-size: 15px; margin-bottom: 12px; }
.legal-cta { margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--border); display: flex; gap: 12px; flex-wrap: wrap; }

@media (max-width: 1024px) {
  #relatedArticles, #homeSecondary { grid-template-columns: repeat(2, 1fr) !important; }
}
@media (max-width: 720px) {
  #relatedArticles, #homeSecondary { grid-template-columns: 1fr !important; }
  .price-cta { flex-direction: column; align-items: flex-start; }
}