/* ============================================================
   朗斯奇 GEO 官网 · 前台样式
   纯原生 CSS，无框架、无 CSS 变量、无渐变色
   ============================================================ */

  /* ===== 设计令牌（已展开为纯色） ===== */
  
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: #FFFFFF;
    color: #10202F;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  a { color: inherit; text-decoration: none; }
  img { display: block; max-width: 100%; }
  ::selection { background: rgba(15,169,138,0.18); }
  :focus-visible { outline: 2px solid #0FA98A; outline-offset: 3px; border-radius: 4px; }

  .wrap { max-width: 1200px; margin: 0 auto; padding: 0 28px; }

  /* ===== 排版 ===== */
  .eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-family: "Space Grotesk", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif; font-size: 13px; letter-spacing: 0.14em;
    color: #0FA98A; text-transform: uppercase;
    margin-bottom: 18px;
  }
  .eyebrow::before { content: ""; width: 26px; height: 1px; background: #0FA98A; }
  h1, h2, h3 { font-family: "Space Grotesk", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif; font-weight: 700; line-height: 1.22; letter-spacing: -0.01em; }
  .section-title { font-size: clamp(26px, 3.4vw, 40px); margin-bottom: 14px; }
  .section-sub { color: #5A6B7D; font-size: 15.5px; max-width: 640px; }
  .section-head { margin-bottom: 52px; }
  .section-head.center { text-align: center; }
  .section-head.center .section-sub { margin-left: auto; margin-right: auto; }
  .section-head.center .eyebrow::after { content: ""; width: 26px; height: 1px; background: #0FA98A; }

  /* ===== 顶部导航 ===== */
  .nav {
    position: fixed; inset: 0 0 auto 0; z-index: 100;
    background: rgba(255,255,255,0.88);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(16,32,47,0.10);
  }
  .nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
  .brand { display: flex; align-items: center; gap: 12px; font-family: "Space Grotesk", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif; font-weight: 700; font-size: 19px; }
  .brand-mark {
    width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center;
    background: rgba(15,169,138,0.10);
    border: 1px solid rgba(15,169,138,0.42); color: #0FA98A;
  }
  /* 上传的站点 Logo：透明底、完整显示 */
  .brand-logo-img { background: none; border: none; padding: 0; overflow: hidden; }
  .brand-logo-img img { width: 100%; height: 100%; object-fit: contain; display: block; }
  .brand small { display: block; font-size: 10.5px; font-weight: 500; color: #8797A8; letter-spacing: 0.18em; line-height: 1.2; }
  .nav-links { display: flex; align-items: center; gap: 30px; list-style: none; font-size: 14.5px; color: #5A6B7D; }
  .nav-links a { transition: color 0.2s; }
  .nav-links a:hover { color: #0FA98A; }
  .nav-cta {
    display: inline-flex; align-items: center; gap: 8px;
    background: #0FA98A; color: #FFFFFF; font-weight: 700; font-size: 14px;
    padding: 9px 18px; border-radius: 999px; transition: background 0.2s;
  }
  .nav-cta:hover { background: #0E9E82; }
  .nav-burger { display: none; background: none; border: 1px solid rgba(16,32,47,0.24); border-radius: 8px; width: 40px; height: 40px; cursor: pointer; color: #10202F; }
  .nav-burger svg { width: 20px; height: 20px; }
  @media (max-width: 960px) {
    .nav-links, .nav-cta { display: none; }
    .nav-burger { display: grid; place-items: center; }
    .nav-links.open {
      display: flex; flex-direction: column; align-items: flex-start; gap: 6px;
      position: absolute; top: 68px; left: 0; right: 0; padding: 18px 28px 24px;
      background: #FFFFFF; border-bottom: 1px solid rgba(16,32,47,0.10);
      box-shadow: 0 8px 20px rgba(16,32,47,0.06);
    }
    .nav-links.open li { width: 100%; }
    .nav-links.open a { display: block; padding: 10px 0; font-size: 16px; }
  }

  /* ===== Hero 轮播（固定高度，内容区 1200px 居中） ===== */
  /* 顶部留出固定导航的高度（68px） */
  .hero { padding: 68px 0 0; position: relative;  }
  .hero-viewport { position: relative; height: 600px; }

  /* 每一屏：铺满轮播区 */
  .hero-pane {
    position: absolute; inset: 0;
    opacity: 0; visibility: hidden;
    transition: opacity .7s ease, visibility .7s;
  }
  .hero-pane.active { opacity: 1; visibility: visible; }

  /* 内容区：1200px 居中 */
  .hero-inner {
    z-index: 1;
    height: 100%;
    max-width: 1200px; margin: 0 auto; padding: 0 28px;
    display: grid; grid-template-columns: 1.02fr 0.98fr;
    gap: 48px;
  }

  .hero h1 { font-size: clamp(30px, 3.4vw, 44px); font-weight: 700; margin: 4px 0 18px; line-height: 1.2; }
  .hero h1 .hl { color: #0FA98A; }
  .hero-lead { color: #5A6B7D; font-size: 16px; max-width: 520px; margin-bottom: 28px; }
  .hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }

  /* 非首页屏的要点列表 */
.hero-copy{
    position: relative;
    z-index: 99;
    top: 15%;
}
  /* 右侧配图 */
  .hero-media {
    position: absolute;
    width: 100%;
    height: 600px;
    z-index: 1;
    left: 0;
  }
  .hero-media img {
    width: 100%; height: 100%;
    object-fit: cover;
  }
  .hero-media-blank {
    width: 100%; height: 100%; border-radius: 18px;
    background: #F7FAFD; border: 1px solid rgba(16,32,47,0.10);
  }
  .hstat{
      text-align: center;
  }

  /* 轮播控制条：贴在轮播区底部 */
  .hero-ctrl {
    position: absolute; z-index: 6; left: 50%; bottom: 80px;
    transform: translateX(-50%);
    display: flex; align-items: center; gap: 14px;
    padding: 6px 13px; border-radius: 999px;
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(16,32,47,0.10);
    box-shadow: 0 4px 14px rgba(16,32,47,0.08);
    backdrop-filter: blur(10px);
  }
  .hc-arrow {
    width: 30px; height: 30px; padding: 0; border-radius: 50%; cursor: pointer;
    border: 1px solid rgba(16,32,47,0.14); background: #FFFFFF; color: #5A6B7D;
    display: grid; place-items: center; transition: all .2s;
  }
  .hc-arrow:hover { border-color: #0FA98A; color: #0FA98A; }
  .hc-arrow svg { width: 16px; height: 16px; }
  .hc-dots { display: flex; align-items: center; gap: 7px; }
  .hc-dot {
    width: 7px; height: 7px; padding: 0; border-radius: 50%; cursor: pointer;
    border: 1px solid rgba(16,32,47,0.22); background: transparent; transition: all .25s;
  }
  .hc-dot:hover { background: rgba(15,169,138,0.32); }
  .hc-dot.active { width: 20px; border-radius: 4px; background: #0FA98A; border-color: #0FA98A; }

  /* 数据条：位于轮播区下方 */
  .hero-stats {
    position: relative; z-index: 2;
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px;
  }
  .hero-stats-wrap {
    position: absolute; z-index: 999;
    bottom: -60px;
    left: 0;
    right: 0;
    width: 1200px; margin: 0 auto; padding: 34px 28px;
    box-sizing: border-box;
    border-radius: 60px;
    box-shadow: 2px 1px 6px #ccc;
    background: #FFFFFF;
  }
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 9px;
    padding: 13px 26px; border-radius: 999px; font-weight: 700; font-size: 15px;
    transition: transform 0.18s, box-shadow 0.18s, background 0.2s; cursor: pointer; border: none;
  }
  .btn-primary { background: #0FA98A; color: #FFFFFF; }
  .btn-primary:hover { background: #0E9E82; transform: translateY(-1px); box-shadow: 0 10px 30px rgba(15,169,138,0.18); }
  .btn-ghost { background: transparent; color: #10202F; border: 1px solid rgba(16,32,47,0.24); }
  .btn-ghost:hover { border-color: #0FA98A; color: #0FA98A; }
  .hstat b { font-family: "Space Grotesk", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif; font-size: 27px; font-weight: 700; color: #0FA98A; display: block; line-height: 1.1; }
  .hstat span { font-size: 12.5px; color: #8797A8; }

  /* ===== AI应答演示卡（签名元素） ===== */
  .demo { position: relative; }
  .demo-card {
    background: #FFFFFF;
    border: 1px solid rgba(16,32,47,0.10); border-radius: 18px;
    box-shadow: 0 4px 12px rgba(16,32,47,0.07), 0 12px 28px rgba(16,32,47,0.06);
    overflow: hidden;
  }
  .demo-bar { display: flex; align-items: center; gap: 8px; padding: 13px 18px; border-bottom: 1px solid rgba(16,32,47,0.10); }
  .demo-dot { width: 9px; height: 9px; border-radius: 50%; background: #5A6B7D; }
  .demo-dot:first-child { background: #FFB454; }
  .demo-name { margin-left: 10px; font-size: 12.5px; color: #8797A8; font-family: "Space Grotesk", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif; letter-spacing: 0.06em; }
  .demo-body { padding: 20px 18px 8px; }
  .demo-q { display: flex; gap: 12px; margin-bottom: 18px; }
  .demo-avatar { flex: none; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font-size: 13px; font-weight: 700; }
  .demo-q .demo-avatar { background: rgba(15,169,138,0.12); color: #0FA98A; }
  .demo-a { display: flex; gap: 12px; }
  .demo-a .demo-avatar { background: #E2EAF2; color: #10202F; }
  .demo-bubble { flex: 1; font-size: 14px; color: #5A6B7D; }
  .demo-bubble strong { color: #10202F; font-weight: 600; }
  .demo-bubble .em { color: #0FA98A; font-weight: 700; }
  .demo-cite {
    margin-top: 12px; display: flex; align-items: center; gap: 10px;
    background: rgba(15,169,138,0.12); border: 1px solid rgba(15,169,138,0.18);
    border-radius: 10px; padding: 10px 12px; font-size: 12.5px; color: #0E9E82;
  }
  .demo-cite .tick { width: 18px; height: 18px; flex: none; }
  .demo-typing { display: inline-flex; gap: 4px; margin: 10px 0 6px 42px; }
  .demo-typing i { width: 5px; height: 5px; border-radius: 50%; background: #0FA98A; animation: blink 1.2s infinite; }
  .demo-typing i:nth-child(2) { animation-delay: 0.2s; }
  .demo-typing i:nth-child(3) { animation-delay: 0.4s; }
  @keyframes blink { 0%, 100% { opacity: 0.25; } 50% { opacity: 1; } }
  .demo-badge {
    position: absolute; top: -16px; right: -12px;
    display: flex; align-items: center; gap: 7px;
    background: #F7FAFD; border: 1px solid #0FA98A; color: #0E9E82;
    padding: 8px 14px; border-radius: 999px; font-size: 12.5px; font-weight: 600;
    box-shadow: 0 14px 40px rgba(15,169,138,0.12);
  }
  .demo-badge .pulse { position: relative; width: 8px; height: 8px; flex: none; }
  .demo-badge .pulse::before { content: ""; position: absolute; inset: 0; border-radius: 50%; background: #0FA98A; }
  .demo-badge .pulse::after { content: ""; position: absolute; inset: 0; border-radius: 50%; background: #0FA98A; animation: ping 1.8s infinite; }
  @keyframes ping { 0% { transform: scale(1); opacity: 0.8; } 100% { transform: scale(2.6); opacity: 0; } }
  .demo-note { text-align: center; margin-top: 14px; font-size: 12.5px; color: #8797A8; }

  @media (max-width: 960px) {
    .hero { padding: 130px 0 56px; }
    .hero-grid { grid-template-columns: 1fr; gap: 48px; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .demo-badge { right: 6px; }
  }

  /* ===== 通用区块 ===== */
  section { padding: 96px 0; }
  /* 白底主题：卡片靠浅描边 + 极淡阴影与背景区分层次 */
  .step, .cap, .plan, .case-card, .news-card {
    box-shadow: 0 1px 2px rgba(16,32,47,0.04);
  }
  .step:hover, .cap:hover, .news-card:hover {
    box-shadow: 0 4px 12px rgba(16,32,47,0.07), 0 12px 28px rgba(16,32,47,0.05);
  }
  section { padding: 92px 0; }
  .alt-bg { background: #F7FAFD; border-top: 1px solid rgba(16,32,47,0.10); border-bottom: 1px solid rgba(16,32,47,0.10); }

  /* ===== 服务流程 ===== */
  .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
  .step {
    position: relative; border: 1px solid rgba(16,32,47,0.10); border-radius: 14px;
    padding: 26px 22px 24px; background: #FFFFFF; transition: border-color 0.25s, transform 0.25s;
  }
  .step:hover { border-color: rgba(15,169,138,0.34); transform: translateY(-3px); }
  .step-num { font-family: "Space Grotesk", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif; font-size: 13px; color: #0FA98A; letter-spacing: 0.12em; margin-bottom: 12px; display: block; }
  .step h3 { font-size: 18px; margin-bottom: 8px; }
  .step p { font-size: 13.5px; color: #5A6B7D; }
  .step .tag { display: inline-block; margin-top: 12px; font-size: 11.5px; color: #8797A8; border: 1px solid rgba(16,32,47,0.10); border-radius: 6px; padding: 2px 8px; }
  @media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } }
  @media (max-width: 600px) { .steps { grid-template-columns: 1fr; } }

  /* ===== 投喂平台 ===== */
  .platforms-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
  .plat-col { border: 1px solid rgba(16,32,47,0.10); border-radius: 14px; background: #FFFFFF; padding: 26px; }
  .plat-col h3 { font-size: 17px; display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
  .plat-col .desc { font-size: 13px; color: #8797A8; margin-bottom: 18px; }
  /* 平台卡片网格：logo + 名称 + 一行简介 */
  .plat-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
  .plat-item {
    display: flex; align-items: center; gap: 12px;
    border: 1px solid rgba(16,32,47,0.10); background: #FFFFFF;
    border-radius: 12px; padding: 12px 14px;
    transition: border-color .2s, box-shadow .2s, transform .2s;
  }
  .plat-item:hover {
    border-color: rgba(15,169,138,0.42);
    box-shadow: 0 4px 12px rgba(16,32,47,0.07);
    transform: translateY(-2px);
  }
  .plat-item .pimg {
    width: 34px; height: 34px; border-radius: 9px; flex: none; overflow: hidden;
    display: grid; place-items: center; background: #F7FAFD; border: 1px solid rgba(16,32,47,0.08);
  }
  .plat-item .pimg img { width: 100%; height: 100%; object-fit: contain; padding: 2px; }
  .plat-item .pico {
    font-style: normal; font-size: 13px; font-weight: 700; color: #FFFFFF; background: #0FA98A;
    width: 100%; height: 100%; display: grid; place-items: center;
    font-family: "Space Grotesk", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  }
  .plat-item.social .pico { background: #C4803A; }
  .plat-item.media .pico { background: #5A66C4; }
  .plat-item .ptxt { min-width: 0; display: flex; flex-direction: column; gap: 2px; }
  .plat-item .ptxt b { font-size: 14px; font-weight: 600; line-height: 1.3; }
  .plat-item .ptxt i {
    font-style: normal; font-size: 11.5px; color: #8797A8; line-height: 1.4;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  }
  .plat-note { margin-top: 18px; font-size: 12.5px; color: #8797A8; }
  @media (max-width: 820px) {
    .platforms-grid { grid-template-columns: 1fr; }
    .plat-cards { grid-template-columns: 1fr; }
  }

  /* ===== 产品能力矩阵 ===== */
  .caps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .cap {
    border: 1px solid rgba(16,32,47,0.10); border-radius: 14px; background: #FFFFFF;
    padding: 26px 24px; display: flex; flex-direction: column; gap: 10px;
    transition: border-color 0.25s, transform 0.25s;
  }
  .cap:hover { border-color: rgba(15,169,138,0.42); transform: translateY(-3px); }
  .cap-icon { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; background: rgba(15,169,138,0.12); border: 1px solid rgba(15,169,138,0.26); color: #0FA98A; }
  .cap-icon svg { width: 22px; height: 22px; }
  .cap h3 { font-size: 17px; }
  .cap p { font-size: 13.5px; color: #5A6B7D; flex: 1; }
  .cap .spec { display: flex; flex-wrap: wrap; gap: 8px; }
  .cap .spec span { font-size: 11.5px; color: #0E9E82; background: rgba(15,169,138,0.12); border-radius: 6px; padding: 3px 9px; font-weight: 500; }
  @media (max-width: 960px) { .caps { grid-template-columns: 1fr 1fr; } }
  @media (max-width: 620px) { .caps { grid-template-columns: 1fr; } }

  /* ===== 套餐 ===== */
  .pricing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: stretch; }
  .plan { position: relative; border: 1px solid rgba(16,32,47,0.10); border-radius: 18px; background: #FFFFFF; padding: 34px 30px; display: flex; flex-direction: column; }
  .plan.hot { border-color: rgba(15,169,138,0.42); box-shadow: 0 24px 70px rgba(15,169,138,0.12); }
  .plan-flag { position: absolute; top: -13px; left: 30px; background: #0FA98A; color: #FFFFFF; font-size: 12px; font-weight: 700; padding: 4px 13px; border-radius: 999px; letter-spacing: 0.06em; }
  .plan-name { font-family: "Space Grotesk", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif; font-size: 15px; letter-spacing: 0.14em; color: #5A6B7D; text-transform: uppercase; margin-bottom: 10px; }
  .plan-price { display: flex; align-items: baseline; gap: 8px; margin-bottom: 6px; }
  .plan-price b { font-family: "Space Grotesk", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif; font-size: 44px; font-weight: 700; color: #10202F; line-height: 1; }
  .plan-price b sup { font-size: 20px; color: #0FA98A; }
  .plan-price span { font-size: 13px; color: #8797A8; }
  .plan-intro { font-size: 13.5px; color: #5A6B7D; padding-bottom: 20px; border-bottom: 1px solid rgba(16,32,47,0.10); margin-bottom: 20px; }
  .plan-feats { list-style: none; display: flex; flex-direction: column; gap: 11px; flex: 1; }
  .plan-feats li { display: flex; gap: 10px; font-size: 13.5px; color: #5A6B7D; align-items: flex-start; }
  .plan-feats li .ck { flex: none; width: 17px; height: 17px; margin-top: 2px; color: #0FA98A; }
  .plan-feats li .no { flex: none; width: 17px; height: 17px; margin-top: 2px; color: #8797A8; }
  .plan-feats li b { color: #10202F; font-weight: 600; }
  .plan-cta { margin-top: 26px; }
  .plan-cta .btn { width: 100%; }
  .pricing-note { margin-top: 22px; font-size: 12.5px; color: #8797A8; text-align: center; }
  @media (max-width: 820px) { .pricing-grid { grid-template-columns: 1fr; } }

  /* ===== 案例（浅色底，与全站交替区块一致；只放手机截图） ===== */
  /* 背景沿用 .alt-bg 的 #F7FAFD，不再单独覆盖 */

  .cases-tabs { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 38px; }
  .case-tab {
    border: 1px solid rgba(16,32,47,0.24); background: transparent; color: #5A6B7D;
    border-radius: 999px; padding: 8px 18px; font-size: 13.5px; cursor: pointer; transition: all 0.2s;
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  }
  .case-tab:hover { color: #0FA98A; border-color: #0FA98A; }
  .case-tab.active { background: #0FA98A; border-color: #0FA98A; color: #FFFFFF; font-weight: 700; }

  /* 轮播轨道：一行 4 个，超出横向滚动 */
  .cases-carousel { position: relative; }
  .cases-track {
    display: grid;
    grid-auto-flow: column;
    /* 4 个一行：扣掉 3 个 gap 再平分 */
    grid-auto-columns: calc((100% - 78px) / 4);
    gap: 26px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
    -ms-overflow-style: none;
    /* 给投影留出空间，避免被 overflow 裁掉 */
    padding: 8px 2px 16px;
    margin: -8px -2px 0;
  }
  .cases-track::-webkit-scrollbar { display: none; }
  .case-card { scroll-snap-align: start; }

  /* 控制条 */
  .cases-ctrl { display: flex; align-items: center; justify-content: center; gap: 18px; margin-top: 26px; }
  .cases-ctrl[hidden] { display: none; }
  .cases-arrow {
    width: 42px; height: 42px; padding: 0; border-radius: 50%; cursor: pointer;
    background: #FFFFFF; border: 1px solid rgba(16,32,47,0.14);
    color: #5A6B7D; display: grid; place-items: center; transition: all 0.2s;
    box-shadow: 0 1px 2px rgba(16,32,47,0.04);
  }
  .cases-arrow:hover { border-color: #0FA98A; color: #0FA98A; }
  .cases-arrow:disabled { opacity: 0.35; cursor: default; }
  .cases-arrow:disabled:hover { border-color: rgba(16,32,47,0.14); color: #5A6B7D; }
  .cases-arrow svg { width: 19px; height: 19px; }
  .cases-dots { display: flex; align-items: center; gap: 8px; }
  .cases-dot {
    width: 8px; height: 8px; padding: 0; border-radius: 50%; cursor: pointer;
    background: rgba(16,32,47,0.20); border: none; transition: all 0.25s;
  }
  .cases-dot.active { width: 22px; border-radius: 4px; background: #0FA98A; }
  .cases-dot:hover { background: rgba(16,32,47,0.38); }
  .cases-dot.active:hover { background: #0FA98A; }

  .case-shot { margin: 0; }
  .case-shot img {
    display: block; width: 100%; height: auto;
    /* 浅色底上投影收紧一些，避免发灰 */
    filter: drop-shadow(0 8px 20px rgba(16,32,47,0.16));
    transition: transform 0.4s ease;
  }
  .case-card:hover .case-shot img { transform: translateY(-6px); }

  /* 没有配图时的保底占位 */
  .case-placeholder {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px;
    min-height: 420px; border: 1px dashed rgba(16,32,47,0.24); border-radius: 16px;
    background: #FFFFFF; text-align: center; padding: 24px;
  }
  .case-placeholder .case-logo {
    width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center;
    background: #F7FAFD; border: 1px solid rgba(16,32,47,0.10);
    font-size: 13px; color: #8797A8;
    font-family: "Space Grotesk", "Noto Sans SC", "PingFang SC", sans-serif;
  }
  .case-placeholder b { color: #10202F; font-size: 15px; font-weight: 600; }
  .case-placeholder .case-tag {
    font-size: 11.5px; color: #8797A8; border: 1px solid rgba(16,32,47,0.10);
    padding: 2px 9px; border-radius: 6px;
  }

  /* 按屏宽调整每行个数 */
  @media (max-width: 1100px) {
    .cases-track { grid-auto-columns: calc((100% - 52px) / 3); gap: 26px; }
  }
  @media (max-width: 860px) {
    .cases-track { grid-auto-columns: calc((100% - 22px) / 2); gap: 22px; }
  }
  @media (max-width: 620px) {
    /* 窄屏露出下一张的一角，提示可滑动 */
    .cases-track { grid-auto-columns: calc(100% - 44px); gap: 16px; }
    .cases-ctrl { gap: 14px; margin-top: 20px; }
    .cases-arrow { width: 38px; height: 38px; }
  }

  /* ===== 科普新闻 ===== */
  .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .news-card { border: 1px solid rgba(16,32,47,0.10); border-radius: 14px; background: #FFFFFF; overflow: hidden; display: flex; flex-direction: column; transition: border-color 0.25s, transform 0.25s; }
  .news-card:hover { border-color: rgba(15,169,138,0.34); transform: translateY(-3px); }
  .news-cover { aspect-ratio: 16 / 9; overflow: hidden; background: #F7FAFD; }
  .news-cover img { width: 100%; height: 100%; object-fit: cover; opacity: 0.85; transition: transform 0.4s; }
  .news-card:hover .news-cover img { transform: scale(1.04); }
  .news-cover.placeholder { display: grid; place-items: center; }
  .news-body { padding: 20px 20px 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
  .news-meta { display: flex; gap: 12px; font-size: 12px; color: #8797A8; font-family: "Space Grotesk", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif; }
  .news-meta .cat { color: #0FA98A; }
  .news-title { font-size: 16.5px; font-weight: 600; line-height: 1.45; }
  .news-excerpt { font-size: 13px; color: #5A6B7D; flex: 1; }
  .news-more { font-size: 13px; color: #0FA98A; font-weight: 600; }
  @media (max-width: 960px) { .news-grid { grid-template-columns: 1fr 1fr; } }
  @media (max-width: 620px) { .news-grid { grid-template-columns: 1fr; } }

  /* ===== 联系 ===== */
  .contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 36px; }
  .contact-info { display: flex; flex-direction: column; gap: 22px; }
  .ci-item { display: flex; gap: 14px; }
  .ci-icon { flex: none; width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; background: rgba(15,169,138,0.12); border: 1px solid rgba(15,169,138,0.26); color: #0FA98A; }
  .ci-icon svg { width: 20px; height: 20px; }
  .ci-item h4 { font-size: 14.5px; margin-bottom: 2px; }
  .ci-item p { font-size: 13.5px; color: #5A6B7D; }
  .ci-item .hl-txt { color: #0E9E82; font-weight: 600; }
  .contact-form {
    border: 1px solid rgba(16,32,47,0.10); border-radius: 18px; background: #FFFFFF;
    padding: 30px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  }
  .f-field { display: flex; flex-direction: column; gap: 7px; }
  .f-field.full { grid-column: 1 / -1; }
  .f-field label { font-size: 13px; color: #5A6B7D; }
  .f-field input, .f-field select, .f-field textarea {
    background: #F7FAFD; border: 1px solid rgba(16,32,47,0.24); border-radius: 9px;
    padding: 12px 14px; color: #10202F; font-size: 14px; font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    transition: border-color 0.2s;
  }
  .f-field input:focus, .f-field select:focus, .f-field textarea:focus { outline: none; border-color: #0FA98A; }
  .f-field textarea { resize: vertical; min-height: 96px; }
  .contact-form .btn { grid-column: 1 / -1; margin-top: 6px; }
  .form-ok { grid-column: 1 / -1; display: none; font-size: 13.5px; color: #0E9E82; background: rgba(15,169,138,0.12); border-radius: 9px; padding: 12px 16px; }
  .form-ok.show { display: block; }
  @media (max-width: 820px) { .contact-grid { grid-template-columns: 1fr; } .contact-form { grid-template-columns: 1fr; } }

  /* ===== Footer ===== */
  footer { border-top: 1px solid rgba(16,32,47,0.10); padding: 52px 0 34px; background: #F1F6FB; }
  .foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
  .foot-brand p { font-size: 13px; color: #8797A8; margin-top: 12px; max-width: 340px; }
  .foot-col h5 { font-size: 13px; color: #10202F; letter-spacing: 0.08em; margin-bottom: 14px; }
  .foot-col ul { list-style: none; display: flex; flex-direction: column; gap: 9px; font-size: 13.5px; color: #5A6B7D; }
  .foot-col a:hover { color: #0FA98A; }
  .foot-bottom { border-top: 1px solid rgba(16,32,47,0.10); padding-top: 24px; display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; font-size: 12.5px; color: #8797A8; }
  @media (max-width: 820px) { .foot-grid { grid-template-columns: 1fr; gap: 28px; } }

  /* ===== Hero 响应式 ===== */
  @media (max-width: 1100px) {
    .hero-viewport { height: 520px; }
    .hero-media { height: 380px; }
  }
  @media (max-width: 900px) {
    .hero-viewport { height: auto; }
    .hero-inner { grid-template-columns: 1fr; gap: 28px; padding: 46px 28px 78px; height: auto; }
    .hero-pane { position: relative; inset: auto; display: none; }
    .hero-pane.active { display: grid; opacity: 1; visibility: visible; }
    .hero-media { height: 340px; }
    .hero h1 { font-size: clamp(26px, 4.4vw, 36px); }
    .hero-ctrl { bottom: 20px; }
  }
  @media (max-width: 600px) {
    .hero-inner { padding: 36px 20px 74px; }
    .hero-media { height: 260px; }
    .hero-stats-wrap { padding: 26px 0 46px; }
    .hero-stats { grid-template-columns: 1fr 1fr; gap: 20px 14px; }
    .hero-ctrl { bottom: 16px; padding: 5px 10px; }
  }

  /* ===== 动效 ===== */
  .reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s ease, transform 0.7s ease; }
  .reveal.in { opacity: 1; transform: none; }
  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; transition: none; }
    .demo-typing i, .demo-badge .pulse::after { animation: none; }
  }

  /* ===== 数据库渲染新增：面包屑/返回顶部/详情页 ===== */
  .back-link { display: inline-flex; align-items: center; gap: 8px; color: #5A6B7D; font-size: 14px; margin-bottom: 30px; transition: color .2s; }
  .back-link:hover { color: #0FA98A; }
  .news-detail { max-width: 760px; margin: 0 auto; }
  .news-detail h1 { font-size: clamp(26px,3.4vw,38px); margin: 12px 0 18px; }
  .news-detail .news-meta { margin-bottom: 26px; }
  .news-detail .cover { width: 100%; border-radius: 14px; overflow: hidden; margin-bottom: 30px; border: 1px solid rgba(16,32,47,0.10); }
  .news-detail .cover img { width: 100%; display: block; }
  .news-content { font-size: 16px; color: #5A6B7D; line-height: 1.9; }
  .news-content h2 { font-size: 22px; color: #10202F; margin: 32px 0 12px; }
  .news-content h3 { font-size: 18px; color: #10202F; margin: 26px 0 10px; }
  .news-content p { margin-bottom: 16px; }
  .news-content ul, .news-content ol { margin: 0 0 16px 22px; }
  .news-content li { margin-bottom: 8px; }
  .news-content img {
    border-radius: 14px; margin: 20px 0; display: block;
    max-width: 100%; height: auto; border: 1px solid rgba(16,32,47,0.10);
  }
  /* 富文本里的段落首行不缩进，靠空行断句；标题前后留足呼吸感 */
  .news-content > p:first-of-type { font-size: 17px; color: #2B3A4A; }
  .news-content strong { color: #10202F; }
  .news-content a { color: #0FA98A; text-decoration: underline; text-underline-offset: 3px; }
  .news-content blockquote { border-left: 3px solid #0FA98A; background: rgba(15,169,138,0.07); padding: 14px 18px; margin: 20px 0; border-radius: 0 10px 10px 0; color: #0E9E82; }
  .news-content table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px; }
  .news-content th, .news-content td { border: 1px solid rgba(16,32,47,0.10); padding: 10px 12px; text-align: left; }
  .news-content th { background: #F7FAFD; color: #10202F; }
  .news-empty { text-align: center; color: #8797A8; padding: 60px 0; font-size: 15px; }
  .to-top { position: fixed; right: 26px; bottom: 26px; width: 44px; height: 44px; border-radius: 50%; background: #FFFFFF; border: 1px solid rgba(16,32,47,0.10); box-shadow: 0 4px 12px rgba(16,32,47,0.10); color: #5A6B7D; display: grid; place-items: center; cursor: pointer; opacity: 0; visibility: hidden; transition: all .25s; z-index: 90; }
  .to-top.show { opacity: 1; visibility: visible; }
  .to-top:hover { color: #0FA98A; border-color: #0FA98A; }
  .to-top svg { width: 20px; height: 20px; }
  /* 空状态 */
  .empty-hint { border: 1px dashed rgba(16,32,47,0.24); border-radius: 14px; padding: 40px; text-align: center; color: #8797A8; font-size: 14px; }