/* ===== 维科特瑞官网 - 设计系统 ===== */
:root {
  --navy: #1E3A5F;
  --navy-dark: #152d4a;
  --teal: #2DB89A;
  --teal-dark: #229e84;
  --gray-bg: #f4f7fa;
  --border: #e2eaf3;
  --text: #2c3e50;
  --text-light: #5a6a7a;
  --shadow: 0 4px 24px rgba(30,58,95,0.08);
  --shadow-hover: 0 12px 40px rgba(30,58,95,0.16);
  --radius: 12px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  line-height: 1.7;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== 顶部栏 ===== */
.topbar {
  background: var(--navy-dark);
  color: rgba(255,255,255,0.85);
  font-size: 13px;
  padding: 8px 0;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; }
.topbar a { color: rgba(255,255,255,0.85); }
.topbar .tel { color: var(--teal); font-weight: 600; }

/* ===== 导航 ===== */
.header {
  background: #fff;
  box-shadow: 0 2px 12px rgba(30,58,95,0.07);
  position: sticky; top: 0; z-index: 100;
}
.header .container { display: flex; justify-content: space-between; align-items: center; height: 104px; }
.logo img { height: 78px; width: auto; }
@media (max-width: 900px) {
  .header .container { height: 84px; }
  .logo img { height: 60px; }
}
.nav { display: flex; gap: 24px; align-items: center; }
.nav a {
  font-size: 15px; font-weight: 600; color: var(--navy);
  position: relative; padding: 8px 0; transition: color 0.2s;
}
.nav a::after {
  content: ''; position: absolute; left: 0; bottom: 0;
  width: 0; height: 3px; background: var(--teal); transition: width 0.25s;
}
.nav a:hover { color: var(--teal); }
.nav a:hover::after, .nav a.active::after { width: 100%; }
.nav a.active { color: var(--teal); }
.nav .btn-quote {
  background: var(--teal); color: #fff; padding: 9px 22px;
  border-radius: 8px; font-weight: 600;
}
.nav .btn-quote::after { display: none; }
.nav .btn-quote:hover { background: var(--teal-dark); color: #fff; }

/* 产品中心下拉菜单 */
.nav-dropdown { position: relative; }
.nav-drop-toggle {
  font-size: 15px; font-weight: 600; color: var(--navy);
  cursor: pointer; padding: 8px 0; position: relative; display: inline-block;
}
.nav-drop-toggle::after {
  content: ''; position: absolute; left: 0; bottom: 0;
  width: 0; height: 3px; background: var(--teal); transition: width 0.25s;
}
.nav-dropdown:hover .nav-drop-toggle { color: var(--teal); }
.nav-dropdown:hover .nav-drop-toggle::after,
.nav-drop-toggle.active::after { width: 100%; }
.nav-drop-toggle.active { color: var(--teal); }
.nav-drop-menu {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(8px);
  background: #fff; border-radius: 10px; box-shadow: var(--shadow-hover);
  padding: 10px; min-width: 188px; opacity: 0; visibility: hidden;
  transition: all 0.22s; z-index: 200; border: 1px solid var(--border);
}
.nav-dropdown:hover .nav-drop-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(4px); }
.nav-drop-menu::before {
  content: ''; position: absolute; top: -16px; left: 0; right: 0; height: 16px;
}
.nav-drop-menu a {
  display: block; padding: 10px 16px; font-size: 14px; font-weight: 500;
  color: var(--text); border-radius: 7px; white-space: nowrap;
}
.nav-drop-menu a::after { display: none; }
.nav-drop-menu a:hover { background: var(--gray-bg); color: var(--teal); }

/* 汉堡按钮(桌面隐藏) */
.nav-toggle { display: none; background: none; border: none; font-size: 26px; color: var(--navy); cursor: pointer; line-height: 1; padding: 4px 8px; }
/* 站内搜索 */
.nav-search { position: relative; }
.nav-search input {
  width: 170px; padding: 8px 14px; border: 1px solid var(--border); border-radius: 20px;
  font-size: 13px; outline: none; transition: all .2s; background: var(--gray-bg); color: var(--text);
}
.nav-search input:focus { width: 210px; border-color: var(--teal); background: #fff; }
.search-results {
  position: absolute; top: 120%; right: 0; min-width: 280px; background: #fff;
  border-radius: 10px; box-shadow: var(--shadow-hover); border: 1px solid var(--border);
  overflow: hidden; display: none; z-index: 300;
}
.search-results.show { display: block; }
.search-results a {
  display: block; padding: 11px 16px; font-size: 13px; color: var(--text);
  border-bottom: 1px solid var(--border); line-height: 1.4;
}
.search-results a::after { display: none; }
.search-results a:last-child { border-bottom: none; }
.search-results a:hover { background: var(--gray-bg); color: var(--teal); }
.search-results .no-res { padding: 12px 16px; font-size: 12px; color: var(--text-light); }


/* ===== Hero 轮播 ===== */
.hero {
  background: linear-gradient(135deg, #1E3A5F 0%, #16304f 60%, #1a3a5c 100%);
  color: #fff; position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -120px; right: -120px;
  width: 500px; height: 500px; border-radius: 50%;
  background: radial-gradient(circle, rgba(45,184,154,0.18), transparent 70%);
  z-index: 1; pointer-events: none;
}
.hero::after {
  content: ''; position: absolute; bottom: -150px; left: -80px;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(45,184,154,0.10), transparent 70%);
  z-index: 1; pointer-events: none;
}
/* 幻灯片堆叠在同一网格单元，交叉淡入淡出 */
.hero-slides { display: grid; position: relative; z-index: 2; }
.hero-slide {
  grid-area: 1 / 1;
  opacity: 0; visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.7s ease, transform 0.7s ease, visibility 0.7s;
}
.hero-slide.active { opacity: 1; visibility: visible; transform: translateY(0); }
.hero-slide .container {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px;
  align-items: center; padding: 78px 24px;
}
/* 文字与图片进入时轻微上移动画 */
.hero-slide.active .hero-text { animation: heroFadeUp 0.8s ease both; }
.hero-slide.active .hero-visual { animation: heroFadeUp 0.8s 0.12s ease both; }
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
/* 统一图片视觉框：白底卡片容纳不同比例图 */
.hero-visual {
  background: rgba(255,255,255,0.96);
  border-radius: 16px; padding: 22px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
  height: 340px; display: flex; align-items: center; justify-content: center;
}
.hero-visual img {
  max-width: 100%; max-height: 100%; width: auto; height: auto;
  object-fit: contain; border-radius: 8px; box-shadow: none; border: none;
}
/* 指示点 */
.hero-dots {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 12px; z-index: 5;
}
.hero-dot {
  width: 12px; height: 12px; border-radius: 50%; cursor: pointer;
  background: rgba(255,255,255,0.35); border: none; padding: 0;
  transition: all 0.25s;
}
.hero-dot:hover { background: rgba(255,255,255,0.6); }
.hero-dot.active { background: var(--teal); width: 30px; border-radius: 6px; }
.hero-badge {
  display: inline-block; background: rgba(45,184,154,0.18);
  color: #7ee8d8; font-size: 13px; font-weight: 600;
  padding: 6px 16px; border-radius: 20px; margin-bottom: 22px;
  border: 1px solid rgba(45,184,154,0.3);
}
.hero h1, .hero .hero-h { font-size: 44px; font-weight: 800; line-height: 1.25; margin-bottom: 20px; letter-spacing: 1px; }
.hero h1 .accent, .hero .hero-h .accent { color: var(--teal); }
.hero p.sub { font-size: 17px; color: rgba(255,255,255,0.82); margin-bottom: 16px; }
.hero .tags { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 32px; }
.hero .tags span {
  font-size: 13px; background: rgba(255,255,255,0.1);
  padding: 6px 14px; border-radius: 6px; border: 1px solid rgba(255,255,255,0.15);
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 14px 32px; border-radius: 8px;
  font-size: 16px; font-weight: 600; transition: all 0.25s; cursor: pointer;
}
.btn-primary { background: var(--teal); color: #fff; box-shadow: 0 6px 20px rgba(45,184,154,0.35); }
.btn-primary:hover { background: var(--teal-dark); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(45,184,154,0.45); }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.6); }
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; }
.hero-visual { position: relative; }
.hero-visual img {
  border-radius: 14px; box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  border: 1px solid rgba(255,255,255,0.1);
}

/* ===== 区块通用 ===== */
.section { padding: 80px 0; }
.section.gray { background: var(--gray-bg); }
.section-head { text-align: center; max-width: 700px; margin: 0 auto 56px; }
.section-head .eyebrow {
  color: var(--teal); font-size: 14px; font-weight: 700;
  letter-spacing: 2px; text-transform: uppercase; margin-bottom: 12px;
}
.section-head h2 { font-size: 34px; font-weight: 800; color: var(--navy); margin-bottom: 16px; }
.section-head p { font-size: 16px; color: var(--text-light); }

/* ===== 产品卡片网格 ===== */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.product-card {
  background: #fff; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); transition: all 0.3s; border: 1px solid var(--border);
  display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.product-card .card-top {
  height: 70px; display: flex; align-items: center; justify-content: center;
  font-size: 34px; background: linear-gradient(135deg, var(--navy), var(--navy-dark));
  position: relative;
}
.product-card .card-top::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 4px;
  background: var(--teal);
}
.product-card .card-body { padding: 28px 26px; flex: 1; display: flex; flex-direction: column; }
.product-card h3 { font-size: 19px; font-weight: 700; color: var(--navy); margin-bottom: 6px; }
.product-card .en { font-size: 12px; color: var(--teal); font-weight: 600; letter-spacing: 1px; margin-bottom: 14px; }
.product-card p { font-size: 14px; color: var(--text-light); line-height: 1.75; margin-bottom: 18px; flex: 1; }
.product-card .card-link {
  font-size: 14px; font-weight: 600; color: var(--teal);
  display: inline-flex; align-items: center; gap: 6px;
}
.product-card .card-link::after { content: '→'; transition: transform 0.2s; }
.product-card:hover .card-link::after { transform: translateX(4px); }

/* ===== 数据统计 ===== */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat {
  text-align: center; padding: 36px 20px; background: #fff;
  border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border);
}
.stat .num { font-size: 42px; font-weight: 800; color: var(--teal); line-height: 1; margin-bottom: 10px; }
.stat .num small { font-size: 20px; }
.stat .label { font-size: 14px; color: var(--text-light); }

/* ===== 为什么选择 ===== */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.why-item {
  padding: 32px 28px; background: #fff; border-radius: var(--radius);
  border: 1px solid var(--border); transition: all 0.3s;
}
.why-item:hover { border-color: var(--teal); box-shadow: var(--shadow); }
.why-item .icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: linear-gradient(135deg, rgba(45,184,154,0.15), rgba(45,184,154,0.05));
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; margin-bottom: 18px;
}
.why-item h3 { font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 10px; }
.why-item p { font-size: 14px; color: var(--text-light); line-height: 1.75; }

/* ===== 仪器产品卡（二手/租赁） ===== */
.inst-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.inst-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column; transition: all 0.3s;
}
.inst-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.inst-img {
  height: 200px; background: #f6f9fc; display: flex; align-items: center; justify-content: center;
  padding: 16px; border-bottom: 1px solid var(--border); position: relative;
}
.inst-img img { max-width: 100%; max-height: 100%; width: auto; object-fit: contain; }

/* 干净品牌产品图卡（无水印替代） */
.inst-tile {
  height: 200px; position: relative; border-bottom: 1px solid var(--border);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: linear-gradient(150deg, #f0f5fb 0%, #e7eef7 100%);
  overflow: hidden;
}
.inst-tile::before {
  content: ''; position: absolute; top: -40px; right: -40px; width: 140px; height: 140px;
  border-radius: 50%; background: radial-gradient(circle, rgba(45,184,154,0.12), transparent 70%);
}
.inst-tile::after {
  content: ''; position: absolute; bottom: -30px; left: -30px; width: 110px; height: 110px;
  border-radius: 50%; background: radial-gradient(circle, rgba(30,58,95,0.07), transparent 70%);
}
.inst-tile .ti-icon {
  font-size: 56px; line-height: 1; margin-bottom: 12px; position: relative; z-index: 2;
  filter: drop-shadow(0 4px 10px rgba(30,58,95,0.18));
}
.inst-tile .ti-brand {
  position: relative; z-index: 2; font-size: 19px; font-weight: 800; color: var(--navy);
  letter-spacing: 1px;
}
.inst-tile .ti-type {
  position: relative; z-index: 2; font-size: 12px; color: var(--text-light);
  margin-top: 4px; letter-spacing: 0.5px;
}
.inst-tag {
  position: absolute; top: 12px; left: 12px; font-size: 12px; font-weight: 600;
  color: #fff; padding: 4px 12px; border-radius: 20px;
}
.inst-tag.rent { background: var(--teal); }
.inst-tag.used { background: #E8A020; }
.inst-body { padding: 20px 22px; flex: 1; display: flex; flex-direction: column; }
.inst-brand {
  font-size: 12px; font-weight: 700; color: var(--teal); letter-spacing: 0.5px;
  margin-bottom: 8px; text-transform: uppercase;
}
.inst-body h3 { font-size: 16px; font-weight: 700; color: var(--navy); margin-bottom: 10px; line-height: 1.4; }
.inst-body p { font-size: 13px; color: var(--text-light); line-height: 1.7; flex: 1; margin-bottom: 16px; }
.inst-link {
  font-size: 14px; font-weight: 600; color: var(--teal);
  display: inline-flex; align-items: center; gap: 6px;
}
.inst-link::after { content: '→'; transition: transform 0.2s; }
.inst-card:hover .inst-link::after { transform: translateX(4px); }

/* ===== CTA ===== */
.cta {
  background: linear-gradient(135deg, var(--navy), var(--navy-dark));
  color: #fff; text-align: center; padding: 72px 24px; border-radius: 0;
}
.cta h2 { font-size: 32px; font-weight: 800; margin-bottom: 14px; }
.cta p { font-size: 16px; color: rgba(255,255,255,0.8); margin-bottom: 32px; }
.cta .hero-actions { justify-content: center; }

/* ===== 页脚 ===== */
.footer { background: var(--navy-dark); color: rgba(255,255,255,0.7); padding: 56px 0 28px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.3fr; gap: 40px; margin-bottom: 40px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 18px; font-weight: 700; }
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 10px; }
.footer ul li a:hover { color: var(--teal); }
.footer .brand-logo { height: 40px; margin-bottom: 16px; filter: brightness(0) invert(1); opacity: 0.95; }
.footer .desc { line-height: 1.8; font-size: 13px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12); padding-top: 24px;
  text-align: center; font-size: 13px; color: rgba(255,255,255,0.5);
}

/* ===== 产品详情页 ===== */
.page-hero {
  background: linear-gradient(135deg, var(--navy), var(--navy-dark));
  color: #fff; padding: 60px 0; text-align: center; position: relative; overflow: hidden;
}
.page-hero::before {
  content: ''; position: absolute; top: -100px; right: -100px; width: 400px; height: 400px;
  border-radius: 50%; background: radial-gradient(circle, rgba(45,184,154,0.15), transparent 70%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero .badge {
  display: inline-block; background: rgba(45,184,154,0.18); color: #7ee8d8;
  font-size: 13px; font-weight: 600; padding: 6px 16px; border-radius: 20px; margin-bottom: 18px;
}
.page-hero h1 { font-size: 38px; font-weight: 800; margin-bottom: 14px; }
.page-hero p { font-size: 16px; color: rgba(255,255,255,0.82); max-width: 640px; margin: 0 auto; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.split img { border-radius: var(--radius); box-shadow: var(--shadow); }
.split h2 { font-size: 28px; font-weight: 800; color: var(--navy); margin-bottom: 18px; }
.split h2 .bar { display: inline-block; width: 4px; height: 26px; background: var(--teal); vertical-align: middle; margin-right: 12px; border-radius: 2px; }
.split p { font-size: 15px; color: var(--text); line-height: 1.85; margin-bottom: 16px; }
.split ul { list-style: none; }
.split ul li { font-size: 15px; padding: 6px 0 6px 28px; position: relative; color: var(--text); }
.split ul li::before { content: '✓'; position: absolute; left: 0; color: var(--teal); font-weight: 700; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 26px; transition: all 0.3s;
}
.feature-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.feature-card .ic { font-size: 32px; margin-bottom: 14px; }
.feature-card h3 { font-size: 17px; font-weight: 700; color: var(--navy); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-light); line-height: 1.75; }
a.case-card { display: flex; flex-direction: column; text-decoration: none; position: relative; }
a.case-card:hover h3 { color: var(--teal); }
.case-card .case-more {
  margin-top: 16px; align-self: flex-start;
  display: inline-block; padding: 7px 16px; border-radius: 999px;
  font-size: 13px; font-weight: 700; color: #fff; background: var(--teal);
  transition: all 0.25s;
}
a.case-card:hover .case-more { background: var(--navy); transform: translateX(3px); }

.cmp-table { width: 100%; border-collapse: collapse; font-size: 14px; box-shadow: var(--shadow); border-radius: var(--radius); overflow: hidden; }
.cmp-table th { background: var(--navy); color: #fff; padding: 16px; font-weight: 600; text-align: center; }
.cmp-table th.hl { background: var(--teal); }
.cmp-table td { padding: 14px 16px; text-align: center; border-bottom: 1px solid var(--border); }
.cmp-table td.label { text-align: left; font-weight: 600; color: var(--navy); background: #f8fbff; }
.cmp-table tr:nth-child(even) td { background: #f8fbff; }
.cmp-table td.win { color: var(--teal-dark); font-weight: 700; }
.cmp-table .col-hl { background: rgba(45,184,154,0.06); }

@media (max-width: 900px) {
  .hero-slide .container, .split { grid-template-columns: 1fr; gap: 32px; }
  .hero-visual { height: 240px; }
  .product-grid, .why-grid, .feature-grid, .inst-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-toggle { display: block; }
  .header .container { position: relative; }
  .nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: stretch; gap: 0;
    padding: 10px 18px 22px; box-shadow: var(--shadow); border-top: 1px solid var(--border);
  }
  body.nav-open .nav { display: flex; }
  .nav > a, .nav .nav-drop-toggle { padding: 13px 4px; border-bottom: 1px solid var(--border); width: 100%; }
  .nav-dropdown { width: 100%; }
  .nav-drop-toggle::after { display: none; }
  .nav-drop-menu {
    position: static; opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: none; padding: 4px 0 8px 16px; min-width: auto; background: transparent;
  }
  .nav-drop-menu a { padding: 10px 4px; }
  .nav-search { width: 100%; margin: 14px 0 6px; }
  .nav-search input, .nav-search input:focus { width: 100%; }
  .search-results { min-width: auto; left: 0; right: 0; }
  .nav .btn-quote { text-align: center; margin-top: 14px; }
  .hero h1, .hero .hero-h { font-size: 32px; }
}

/* ===== 新闻资讯列表 ===== */
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.news-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); transition: all 0.3s; display: flex; flex-direction: column;
}
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.news-card-top {
  background: linear-gradient(135deg, var(--navy), var(--navy-dark));
  padding: 22px 26px; display: flex; align-items: center; gap: 12px;
}
.news-icon { font-size: 26px; }
.news-cat {
  color: #7ee8d8; font-size: 13px; font-weight: 600; background: rgba(45,184,154,0.15);
  padding: 4px 12px; border-radius: 14px;
}
.news-card-body { padding: 24px 26px; flex: 1; display: flex; flex-direction: column; }
.news-card-body h3 { font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 10px; line-height: 1.5; }
.news-card-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; flex: 1; margin-bottom: 16px; }
.news-meta { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--text-light); }
.news-more { color: var(--teal); font-weight: 600; }

/* ===== 文章详情页 ===== */
.art-hero {
  background: linear-gradient(135deg, var(--navy), var(--navy-dark));
  color: #fff; padding: 48px 0 40px;
}
.art-crumb { font-size: 13px; color: rgba(255,255,255,0.6); margin-bottom: 16px; }
.art-crumb a { color: #7ee8d8; }
.art-cat {
  display: inline-block; background: rgba(45,184,154,0.18); color: #7ee8d8;
  font-size: 13px; font-weight: 600; padding: 5px 14px; border-radius: 16px; margin-bottom: 14px;
}
.art-hero h1 { font-size: 30px; font-weight: 800; line-height: 1.4; margin-bottom: 14px; max-width: 800px; }
.art-date { font-size: 14px; color: rgba(255,255,255,0.7); }
.art-wrap {
  max-width: 1000px; margin: 0 auto; padding: 56px 24px;
  display: grid; grid-template-columns: 1fr 280px; gap: 48px; align-items: start;
}
.art-body { font-size: 16px; line-height: 1.9; color: var(--text); }
.art-body p { margin-bottom: 18px; }
.art-h2 {
  font-size: 22px; font-weight: 800; color: var(--navy); margin: 36px 0 18px;
  padding-left: 14px; border-left: 4px solid var(--teal);
}
.art-h3 { font-size: 17px; font-weight: 700; color: var(--navy); margin: 24px 0 12px; }
.art-ul { list-style: none; margin: 0 0 20px; padding: 0; }
.art-ul li {
  position: relative; padding: 8px 0 8px 26px; font-size: 15px; line-height: 1.8;
  border-bottom: 1px dashed var(--border);
}
.art-ul li::before { content: '▸'; position: absolute; left: 4px; color: var(--teal); font-weight: 700; }
.art-tip {
  background: #f0faf8; border-left: 4px solid var(--teal); border-radius: 8px;
  padding: 18px 22px; margin: 24px 0; font-size: 15px; color: var(--navy-dark);
}
.art-cta {
  margin-top: 48px; padding: 32px; background: var(--gray-bg);
  border-radius: var(--radius); text-align: center;
}
.art-cta p { font-size: 15px; color: var(--text); margin-bottom: 20px; }
.art-related {
  position: sticky; top: 100px; background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
}
.art-related h3 {
  font-size: 16px; font-weight: 700; color: var(--navy); margin-bottom: 16px;
  padding-bottom: 12px; border-bottom: 2px solid var(--teal);
}
.rel-card {
  display: flex; gap: 12px; align-items: flex-start; padding: 14px 0;
  border-bottom: 1px dashed var(--border); transition: all 0.2s;
}
.rel-card:last-child { border-bottom: none; }
.rel-card:hover .rel-title { color: var(--teal); }
.rel-icon { font-size: 20px; flex-shrink: 0; }
.rel-title { font-size: 14px; line-height: 1.5; color: var(--text); font-weight: 500; }

@media (max-width: 900px) {
  .news-grid { grid-template-columns: 1fr; }
  .art-wrap { grid-template-columns: 1fr; }
  .art-related { position: static; }
}

/* ===== FAQ 问答页 ===== */
.faq-cat { font-size: 15px; font-weight: 700; color: var(--teal); letter-spacing: 1px;
  margin: 36px 0 14px; padding-bottom: 8px; border-bottom: 2px solid var(--border); }
.faq-cat:first-child { margin-top: 0; }
.faq-item { border: 1px solid var(--border); border-radius: 10px; margin-bottom: 12px;
  background: #fff; overflow: hidden; transition: box-shadow .2s; }
.faq-item[open] { box-shadow: var(--shadow); }
.faq-item summary { list-style: none; cursor: pointer; padding: 18px 22px;
  font-size: 16px; font-weight: 600; color: var(--navy); position: relative;
  padding-right: 48px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; position: absolute; right: 22px; top: 50%;
  transform: translateY(-50%); font-size: 22px; color: var(--teal); font-weight: 400;
  transition: transform .2s; }
.faq-item[open] summary::after { content: '−'; }
.faq-item summary:hover { color: var(--teal); }
.faq-a { padding: 0 22px 20px; }
.faq-a p { font-size: 15px; line-height: 1.85; color: var(--text-light); margin-bottom: 10px; }
.faq-a p:last-child { margin-bottom: 0; }
.faq-a a { color: var(--teal); font-weight: 600; }
@media (max-width: 768px){ .faq-item summary { font-size: 15px; } }

/* 新闻分类筛选 */
.news-filter { display:flex; flex-wrap:wrap; gap:10px; justify-content:center; margin-bottom:40px; }
.nf-btn { padding:8px 20px; border:1px solid var(--border); background:#fff; color:var(--text-light); border-radius:20px; font-size:14px; font-weight:600; cursor:pointer; transition:all .2s; }
.nf-btn:hover { border-color:var(--teal); color:var(--teal); }
.nf-btn.active { background:var(--teal); border-color:var(--teal); color:#fff; }
.news-card.nf-hide { display:none; }