/* 营销云 WTIDM 首页样式（从 idm-index.html 抽离）*/
    :root {
      --green: #35ac39;
      --green-d: #2b8f2f;
      --green-weak: #e9f7ea;
      --orange: #f59a23;
      --orange-d: #ef7d1a;
      --orange-weak: #fdf2e2;
      --ink: #14181f;
      --ink-2: #1f2530;
      --ink-3: #55585f;
      --ink-4: #8a8f99;
      --line: #ebedf0;
      --panel: #f7f8f9;
      --radius-lg: 24px;
      --radius-md: 16px;
      --nav-h: 64px;
      --maxw: 1180px;
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    /* clip：防止轮播等内容撑宽移动端布局视口，且不影响 fixed 元素 */
    html, body { overflow-x: clip; }
    body {
      font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
      background: #fff; color: var(--ink-2);
      font-size: 16px; line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; display: block; }
    a { text-decoration: none; color: inherit; }
    ul { list-style: none; }

    .wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
    section { padding: 110px 0 0; }

    /* ===== 眉标 ===== */
    .eyebrow {
      display: inline-flex; align-items: center; gap: 8px;
      font-size: 13px; letter-spacing: .5px; color: var(--green);
      background: var(--green-weak); border-radius: 999px;
      padding: 6px 14px; margin-bottom: 22px; font-weight: 500;
    }
    .eyebrow .en { color: rgba(53,172,57,.55); font-weight: 400; }
    .eyebrow i { font-size: 14px; }
    .eyebrow.orange { color: var(--orange-d); background: var(--orange-weak); }
    .eyebrow.orange .en { color: rgba(239,125,26,.55); }

    /* ===== 区块标题 ===== */
    .sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 48px; margin-bottom: 52px; }
    .sec-head h2 { font-size: clamp(30px, 3.8vw, 46px); font-weight: 600; letter-spacing: -1px; line-height: 1.25; color: var(--ink-2); }
    .sec-head h2 em { font-style: normal; color: var(--green); }
    .sec-head .desc { max-width: 400px; color: var(--ink-3); font-size: 15px; line-height: 1.9; padding-bottom: 8px; }
    .sec-center { text-align: center; margin-bottom: 52px; }
    .sec-center h2 { font-size: clamp(30px, 3.8vw, 46px); font-weight: 600; letter-spacing: -1px; line-height: 1.25; }
    .sec-center .desc { max-width: 640px; margin: 16px auto 0; color: var(--ink-3); font-size: 15px; line-height: 1.9; }
    @media (max-width: 860px) { .sec-head { flex-direction: column; align-items: flex-start; gap: 16px; } }

    /* ===== 按钮 ===== */
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      border-radius: 999px; font-size: 14.5px; padding: 13px 28px;
      transition: all .25s; cursor: pointer; border: 0; white-space: nowrap;
    }
    .btn-orange { background: linear-gradient(135deg, #f7a63a, var(--orange-d)); color: #fff; box-shadow: 0 8px 22px rgba(239,125,26,.30); }
    .btn-orange:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(239,125,26,.38); }
    .btn-green { background: var(--green); color: #fff; box-shadow: 0 8px 22px rgba(53,172,57,.26); }
    .btn-green:hover { background: var(--green-d); transform: translateY(-2px); }
    .btn-dark { background: var(--ink); color: #fff; }
    .btn-dark:hover { background: #2a2f38; transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0,0,0,.18); }
    .btn-ghost { background: #fff; color: var(--ink); border: 1px solid var(--line); }
    .btn-ghost:hover { border-color: #cfd3d9; transform: translateY(-2px); }
    .btn-line-orange { background: #fff; color: var(--orange-d); border: 1px solid rgba(239,125,26,.45); }
    .btn-line-orange:hover { background: var(--orange-weak); border-color: var(--orange-d); }
    .btn-line-green { background: #fff; color: var(--green); border: 1px solid rgba(53,172,57,.45); }
    .btn-line-green:hover { background: var(--green-weak); border-color: var(--green); }
    .btn-block { width: 100%; }
    .btn[disabled] { opacity: .6; pointer-events: none; }

    /* ===== 导航 ===== */
    nav {
      position: fixed; top: 0; left: 0; right: 0; z-index: 100;
      height: var(--nav-h); display: flex; align-items: center;
      background: rgba(255,255,255,.92);
      backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
      transition: box-shadow .3s;
    }
    nav.scrolled { box-shadow: 0 1px 0 var(--line), 0 8px 24px rgba(0,0,0,.05); }
    .nav-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }
    .brand img { height: 34px; width: auto; }
    .nav-links { display: flex; align-items: center; gap: 4px; }
    .nav-links a {
      font-size: 14.5px; color: var(--ink-3); padding: 8px 15px;
      border-radius: 999px; transition: all .2s;
    }
    .nav-links a:hover { color: var(--ink); background: var(--panel); }
    .nav-cta {
      background: linear-gradient(135deg, #f7a63a, var(--orange-d)) !important;
      color: #fff !important; padding: 9px 20px !important; font-size: 13.5px !important;
      box-shadow: 0 6px 16px rgba(239,125,26,.30); margin-left: 8px;
    }
    .nav-cta:hover { filter: brightness(1.05); }
    .nav-old {
      display: inline-flex; align-items: center; gap: 5px;
      font-size: 13px !important; color: var(--ink-4) !important;
      border: 1px dashed rgba(20,24,31,.20); border-radius: 999px;
      padding: 7px 13px !important; margin-left: 6px; transition: all .2s;
    }
    .nav-old i { font-size: 14px; }
    .nav-old:hover { color: var(--orange-d) !important; background: var(--orange-weak) !important; border-color: rgba(239,125,26,.45); }
    #navToggle { display: none; background: none; border: 0; font-size: 24px; color: var(--ink); cursor: pointer; }
    @media (max-width: 900px) {
      .nav-links { display: none; position: absolute; top: var(--nav-h); left: 0; right: 0; flex-direction: column; align-items: stretch; background: #fff; padding: 12px 24px 20px; box-shadow: 0 16px 32px rgba(0,0,0,.08); }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 12px 16px; }
      .nav-cta { margin-left: 0; text-align: center; }
      #navToggle { display: block; }
    }

    /* ===== Hero ===== */
    .hero { padding: calc(var(--nav-h) + 84px) 0 0; text-align: center; position: relative; overflow: hidden; }
    .hero::before, .hero::after {
      content: ""; position: absolute; pointer-events: none; border-radius: 50%;
    }
    .hero::before {
      left: -180px; top: -160px; width: 560px; height: 560px;
      background: radial-gradient(closest-side, rgba(53,172,57,.14), transparent 70%);
    }
    .hero::after {
      right: -200px; top: 40px; width: 620px; height: 620px;
      background: radial-gradient(closest-side, rgba(239,125,26,.13), transparent 70%);
    }
    .hero .wrap { position: relative; z-index: 1; }
    .hero h1 {
      font-size: clamp(32px, 4.8vw, 60px); font-weight: 600;
      letter-spacing: -.02em; line-height: 1.28; color: var(--ink-2);
      margin-bottom: 22px; min-height: 2.56em;
    }
    .hero h1 .h1-slide { display: inline-block; transition: opacity .4s ease, transform .4s ease; }
    .hero h1.leaving .h1-slide { opacity: 0; transform: translateY(-18px); }
    .hero h1 .g { color: var(--green); }
    .hero h1 .o { color: var(--orange-d); }
    .hero .sub { max-width: 680px; margin: 0 auto; color: var(--ink-3); font-size: 16px; }
    .hero-ctas { display: flex; gap: 14px; justify-content: center; margin-top: 34px; }
    .hero-meta {
      display: flex; gap: 28px; justify-content: center; flex-wrap: wrap;
      margin-top: 26px; color: var(--ink-4); font-size: 13.5px;
    }
    .hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
    .hero-meta i { color: var(--green); font-size: 15px; }

    /* ===== 关于：三大能力 ===== */
    .cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    @media (max-width: 960px) { .cap-grid { grid-template-columns: 1fr; } }
    .cap-card {
      background: var(--panel); border-radius: var(--radius-lg); padding: 38px 32px;
      border: 1px solid transparent; position: relative; overflow: hidden; transition: all .3s;
    }
    .cap-card:hover { background: #fff; transform: translateY(-6px); border-color: rgba(53,172,57,.28); box-shadow: 0 20px 44px rgba(53,172,57,.12); }
    .cap-card .ico {
      width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
      font-size: 24px; margin-bottom: 20px; transition: all .3s;
    }
    .cap-card .ico.g { background: var(--green-weak); color: var(--green); }
    .cap-card .ico.o { background: var(--orange-weak); color: var(--orange-d); }
    .cap-card:hover .ico.g { background: var(--green); color: #fff; }
    .cap-card:hover .ico.o { background: linear-gradient(135deg, #f7a63a, var(--orange-d)); color: #fff; }
    .cap-card h4 { font-size: 19px; font-weight: 600; margin-bottom: 8px; }
    .cap-card p { font-size: 14px; color: var(--ink-3); line-height: 1.85; }

    /* ===== 解决方案 ===== */
    .sol-panel {
      display: grid; grid-template-columns: 1.15fr 1fr; gap: 52px; align-items: center;
      border-radius: 28px; padding: 56px 52px;
      background:
        radial-gradient(60% 100% at 100% 0%, rgba(239,125,26,.08), transparent 60%),
        radial-gradient(60% 100% at 0% 100%, rgba(53,172,57,.08), transparent 60%),
        linear-gradient(180deg, #fbfbfa 0%, var(--panel) 100%);
      border: 1px solid var(--line);
    }
    @media (max-width: 900px) { .sol-panel { grid-template-columns: 1fr; padding: 36px 26px; gap: 32px; } }
    .sol-panel h3 { font-size: clamp(24px, 2.6vw, 32px); font-weight: 600; letter-spacing: -.5px; line-height: 1.4; margin-bottom: 26px; }
    .sol-list li { display: flex; gap: 12px; align-items: flex-start; padding: 9px 0; color: var(--ink-3); font-size: 14.5px; line-height: 1.75; }
    .sol-list li i {
      flex: none; margin-top: 3px; width: 20px; height: 20px; border-radius: 50%;
      background: var(--green-weak); color: var(--green); font-size: 13px;
      display: flex; align-items: center; justify-content: center;
    }
    .sol-list li:nth-child(even) i { background: var(--orange-weak); color: var(--orange-d); }
    .sol-cta { margin-top: 28px; display: flex; gap: 12px; flex-wrap: wrap; }
    .sol-shot {
      border-radius: 20px; background: #fff; border: 1px solid var(--line);
      box-shadow: 0 24px 60px rgba(20,24,31,.10); padding: 28px;
    }
    .chan-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .chan-tile {
      display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
      background: var(--panel); border: 1px solid var(--line); border-radius: 16px;
      padding: 26px 12px; transition: all .3s;
    }
    .chan-tile i { font-size: 30px; }
    .chan-tile span { font-size: 13.5px; color: var(--ink-2); font-weight: 500; }
    .chan-tile:hover { transform: translateY(-4px); background: #fff; box-shadow: 0 14px 32px rgba(20,24,31,.08); border-color: rgba(53,172,57,.30); }

    /* ===== 客户评价（自动滚动） ===== */
    .clients-sec { margin-top: 120px; background: var(--panel); padding: 90px 0 96px; overflow: hidden; }
    .client-mask { position: relative; overflow: hidden; }
    .client-mask::before, .client-mask::after {
      content: ""; position: absolute; top: 0; bottom: 0; width: 90px; z-index: 2; pointer-events: none;
    }
    .client-mask::before { left: 0; background: linear-gradient(90deg, var(--panel), transparent); }
    .client-mask::after { right: 0; background: linear-gradient(270deg, var(--panel), transparent); }
    .client-track { display: flex; gap: 20px; width: max-content; animation: marquee 38s linear infinite; }
    .client-mask:hover .client-track { animation-play-state: paused; }
    @keyframes marquee { to { transform: translateX(calc(-50% - 10px)); } }
    .t-card {
      width: 350px; background: #fff; border-radius: 20px; padding: 26px;
      border: 1px solid var(--line); transition: all .3s;
    }
    .t-card:hover { transform: translateY(-5px); box-shadow: 0 18px 40px rgba(20,24,31,.09); }
    .t-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
    .t-head img { width: 52px; height: 52px; border-radius: 12px; object-fit: cover; background: #fff; border: 1px solid var(--line); padding: 3px; }
    .t-head h4 { font-size: 16px; font-weight: 600; color: var(--ink-2); }
    .t-head span { display: block; font-size: 12px; color: var(--ink-4); font-weight: 400; margin-top: 2px; }
    .t-card p { font-size: 13.5px; color: var(--ink-3); line-height: 1.8; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
    @media (max-width: 640px) { .t-card { width: 290px; } }

    /* ===== 套餐 ===== */
    .price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
    @media (max-width: 960px) { .price-grid { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; } }
    .p-card {
      position: relative; border-radius: var(--radius-lg); padding: 40px 34px;
      background: var(--panel); border: 1px solid transparent;
      display: flex; flex-direction: column; transition: all .3s;
    }
    .p-card:hover { transform: translateY(-6px); box-shadow: 0 24px 52px rgba(20,24,31,.10); background: #fff; border-color: var(--line); }
    .p-card.feature {
      background: linear-gradient(180deg, #fff 0%, var(--orange-weak) 140%);
      border-color: rgba(239,125,26,.40);
    }
    .p-card.feature:hover { border-color: var(--orange-d); box-shadow: 0 24px 52px rgba(239,125,26,.16); }
    .p-badge {
      position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
      background: linear-gradient(135deg, #f7a63a, var(--orange-d)); color: #fff;
      font-size: 12.5px; font-weight: 500; padding: 5px 18px; border-radius: 999px;
      box-shadow: 0 6px 14px rgba(239,125,26,.35); white-space: nowrap;
    }
    .p-card h3 { font-size: 21px; font-weight: 600; margin-bottom: 4px; }
    .p-card .p-for { font-size: 13px; color: var(--ink-4); margin-bottom: 18px; }
    .p-price { display: flex; align-items: baseline; gap: 4px; margin-bottom: 4px; }
    .p-price b { font-size: 40px; font-weight: 700; letter-spacing: -1px; color: var(--ink); font-variant-numeric: tabular-nums; }
    .p-card.feature .p-price b { color: var(--orange-d); }
    .p-price small { font-size: 13px; color: var(--ink-4); }
    .p-card ul { margin: 20px 0 26px; flex: 1; }
    .p-card li { display: flex; gap: 10px; align-items: flex-start; padding: 7px 0; font-size: 14px; color: var(--ink-3); }
    .p-card li i { flex: none; margin-top: 4px; font-size: 15px; color: var(--green); }
    .p-card li.hl { color: var(--ink-2); font-weight: 500; }
    .p-card li.hl i { color: var(--orange-d); }

    /* ===== 功能介绍 ===== */
    .feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    @media (max-width: 960px) { .feat-grid { grid-template-columns: repeat(2, 1fr); } }
    @media (max-width: 600px) { .feat-grid { grid-template-columns: 1fr; } }
    .feat-card {
      background: var(--panel); border-radius: var(--radius-lg); padding: 34px 30px;
      border: 1px solid transparent; transition: all .3s;
    }
    .feat-card:hover { background: #fff; border-color: rgba(53,172,57,.28); box-shadow: 0 20px 44px rgba(53,172,57,.10); transform: translateY(-6px); }
    .feat-card .ico {
      width: 50px; height: 50px; border-radius: 13px; display: flex; align-items: center; justify-content: center;
      font-size: 23px; margin-bottom: 18px;
    }
    .feat-card:nth-child(odd) .ico { background: var(--green-weak); color: var(--green); }
    .feat-card:nth-child(even) .ico { background: var(--orange-weak); color: var(--orange-d); }
    .feat-card:hover:nth-child(odd) .ico { background: var(--green); color: #fff; }
    .feat-card:hover:nth-child(even) .ico { background: linear-gradient(135deg, #f7a63a, var(--orange-d)); color: #fff; }
    .feat-card h4 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
    .feat-card p { font-size: 14px; color: var(--ink-3); line-height: 1.85; }

    /* ===== 联系我们 ===== */
    .contact-sec { padding-top: 120px; }
    .contact-panel {
      border-radius: 28px; overflow: hidden; text-align: center;
      background:
        radial-gradient(80% 120% at 50% -10%, rgba(247,166,58,.28), transparent 60%),
        radial-gradient(60% 100% at 10% 110%, rgba(53,172,57,.22), transparent 60%),
        linear-gradient(160deg, #1c212b 0%, #14181f 100%);
      padding: 64px 48px;
    }
    .contact-panel .eyebrow { background: rgba(255,255,255,.08); color: #ffd9a8; }
    .contact-panel .eyebrow .en { color: rgba(255,217,168,.6); }
    .contact-panel h2 { color: #fff; font-size: clamp(26px, 3.4vw, 40px); font-weight: 600; letter-spacing: -1px; }
    .contact-panel .sub { color: rgba(255,255,255,.62); max-width: 560px; margin: 14px auto 0; font-size: 14.5px; }
    .qr-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; max-width: 460px; margin: 40px auto 0; }
    .qr-item { background: #fff; border-radius: 18px; padding: 18px 14px 14px; transition: all .3s; }
    .qr-item:hover { transform: translateY(-5px); box-shadow: 0 18px 40px rgba(0,0,0,.35); }
    .qr-item img { width: 100%; max-width: 170px; margin: 0 auto 10px; border-radius: 10px; }
    .qr-item span { font-size: 13.5px; color: var(--ink-2); font-weight: 500; }
    .qr-item small { display: block; font-size: 12px; color: var(--ink-4); margin-top: 2px; }
    .contact-tel { margin-top: 30px; color: rgba(255,255,255,.75); font-size: 14px; display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; }
    .contact-tel a { display: inline-flex; align-items: center; gap: 8px; color: #fff; transition: color .2s; }
    .contact-tel a:hover { color: #ffd9a8; }
    @media (max-width: 640px) { .contact-panel { padding: 44px 20px; } }

    /* ===== Footer ===== */
    footer { background: var(--ink); color: rgba(255,255,255,.72); margin-top: 120px; padding: 64px 0 0; overflow: hidden; }
    .foot-top { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; padding-bottom: 48px; }
    .foot-brand img { height: 34px; margin-bottom: 16px; }
    .foot-brand p { font-size: 13.5px; max-width: 340px; color: rgba(255,255,255,.5); }
    .foot-cols { display: flex; gap: 64px; flex-wrap: wrap; }
    .foot-cols h5 { color: #fff; font-size: 14px; font-weight: 500; margin-bottom: 14px; }
    .foot-cols a, .foot-cols span { display: block; font-size: 13.5px; color: rgba(255,255,255,.55); padding: 4px 0; transition: color .2s; }
    .foot-cols a:hover { color: #ffd9a8; }
    .foot-bar {
      border-top: 1px solid rgba(255,255,255,.1); padding: 20px 0;
      display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
      font-size: 12.5px; color: rgba(255,255,255,.42);
    }
    .foot-bar a { color: rgba(255,255,255,.42); }
    .foot-bar a:hover { color: rgba(255,255,255,.7); }

    /* ===== 登录弹窗 ===== */
    .modal-mask {
      position: fixed; inset: 0; z-index: 200; display: none;
      background: rgba(15,18,24,.55); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
      align-items: center; justify-content: center; padding: 20px;
    }
    .modal-mask.open { display: flex; }
    .modal-card {
      width: 100%; max-width: 400px; background: #fff; border-radius: 22px;
      padding: 38px 36px 34px; position: relative;
      box-shadow: 0 40px 100px rgba(0,0,0,.35);
      animation: pop .28s cubic-bezier(.2,.9,.3,1.2);
    }
    @keyframes pop { from { opacity: 0; transform: translateY(24px) scale(.96); } }
    .modal-close {
      position: absolute; right: 16px; top: 16px; width: 34px; height: 34px;
      border: 0; border-radius: 50%; background: var(--panel); color: var(--ink-3);
      font-size: 18px; cursor: pointer; transition: all .2s;
      display: flex; align-items: center; justify-content: center;
    }
    .modal-close:hover { background: var(--orange-weak); color: var(--orange-d); }
    .modal-card h3 { text-align: center; font-size: 22px; font-weight: 600; letter-spacing: -.5px; margin-top: 4px; }
    .modal-card .m-sub { text-align: center; color: var(--ink-4); font-size: 13px; margin: 6px 0 24px; }
    .field { margin-bottom: 16px; }
    .field input {
      width: 100%; height: 48px; border: 1px solid var(--line); border-radius: 12px;
      padding: 0 16px; font-size: 14.5px; color: var(--ink); outline: none;
      transition: border-color .2s, box-shadow .2s; background: var(--panel);
    }
    .field input:focus { border-color: var(--orange); box-shadow: 0 0 0 3px rgba(239,125,26,.14); background: #fff; }
    .field-row { display: flex; gap: 12px; }
    .field-row .field { flex: 1; margin-bottom: 16px; }
    .captcha { flex: none; width: 118px; height: 48px; border-radius: 12px; border: 1px solid var(--line); background: #eee; cursor: pointer; object-fit: contain; padding: 5px; image-rendering: pixelated; }
    .login-err { display: none; margin: -6px 0 14px; font-size: 13px; color: #d94838; text-align: center; }
    .login-err.show { display: block; }
    #loginSubmit { margin-top: 18px; }

    /* ===== 提示气泡 ===== */
    #toast {
      position: fixed; left: 50%; top: 84px; transform: translateX(-50%) translateY(-16px);
      z-index: 300; background: rgba(20,24,31,.92); color: #fff; font-size: 14px;
      padding: 11px 22px; border-radius: 999px; opacity: 0; pointer-events: none;
      transition: all .3s; max-width: 86vw; text-align: center;
    }
    #toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

    /* ===== 回到顶部 ===== */
    #toTop {
      position: fixed; right: 28px; bottom: 28px; z-index: 90;
      width: 44px; height: 44px; border-radius: 50%;
      background: #fff; color: var(--ink); border: 1px solid var(--line);
      display: flex; align-items: center; justify-content: center; font-size: 20px;
      box-shadow: 0 8px 24px rgba(0,0,0,.12); opacity: 0; pointer-events: none;
      transition: all .3s; cursor: pointer;
    }
    #toTop.show { opacity: 1; pointer-events: auto; }
    #toTop:hover { background: var(--green); color: #fff; border-color: var(--green); }

    /* ===== 手机端适配 ===== */
    @media (max-width: 640px) {
      section { padding-top: 72px; }
      .hero { padding-top: calc(var(--nav-h) + 44px); }
      .hero h1 { font-size: clamp(28px, 8vw, 38px); min-height: 3.9em; }
      .hero .sub { font-size: 14.5px; }
      .hero-ctas { flex-direction: column; align-items: center; gap: 10px; margin-top: 26px; }
      .hero-ctas .btn { width: min(260px, 80vw); }
      .hero-meta { gap: 14px; font-size: 12.5px; }
      .sec-head { margin-bottom: 32px; }
      .sec-head h2, .sec-center h2 { font-size: 27px; }
      .cap-grid, .price-grid, .feat-grid { gap: 14px; }
      .cap-card, .feat-card, .p-card { padding: 28px 24px; }
      .sol-panel { padding: 32px 22px; }
      .sol-panel h3 { font-size: 22px; }
      .clients-sec { margin-top: 80px; padding: 64px 0 70px; }
      .contact-sec { padding-top: 80px; }
      .qr-grid { gap: 12px; }
      footer { margin-top: 80px; padding-top: 48px; }
      .foot-bar { flex-direction: column; }
      #toTop { right: 16px; bottom: 16px; }
      .modal-card { padding: 30px 24px 26px; }
    }


    /* ===== 无障碍：跳转主内容 ===== */
    .skip {
      position: fixed; left: 50%; top: -60px; transform: translateX(-50%); z-index: 400;
      background: var(--ink); color: #fff; font-size: 13.5px;
      padding: 10px 20px; border-radius: 0 0 12px 12px; transition: top .2s;
    }
    .skip:focus { top: 0; }

    /* ===== 核心信息速览（GEO 关键事实） ===== */
    .overview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
    @media (max-width: 960px) { .overview-grid { grid-template-columns: 1fr; } }
    .facts {
      background: var(--panel); border-radius: var(--radius-lg); padding: 34px 32px;
      border: 1px solid transparent; margin: 0;
    }
    .facts .fact { display: grid; grid-template-columns: 116px 1fr; gap: 14px; padding: 11px 0; border-bottom: 1px dashed var(--line); }
    .facts .fact:last-child { border-bottom: 0; padding-bottom: 0; }
    .facts dt { font-size: 14px; color: var(--ink-4); }
    .facts dd { margin: 0; font-size: 14.5px; color: var(--ink-2); line-height: 1.75; }
    .ov-table {
      background: #fff; border-radius: var(--radius-lg); border: 1px solid var(--line);
      padding: 30px 28px; box-shadow: 0 18px 44px rgba(20,24,31,.06);
    }
    .ov-table h3 { font-size: 17px; font-weight: 600; margin-bottom: 16px; }
    .ov-table table, .cmp-table { width: 100%; border-collapse: collapse; font-size: 14px; }
    .ov-table caption, .cmp-table caption { text-align: left; color: var(--ink-4); font-size: 12.5px; padding-bottom: 10px; }
    .ov-table th, .ov-table td { text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
    .ov-table thead th { color: var(--ink-4); font-size: 13px; font-weight: 500; background: var(--panel); }
    .ov-table tbody th { font-weight: 600; color: var(--ink-2); white-space: nowrap; }
    .ov-table tbody td { color: var(--ink-3); }
    .ov-table tbody tr:last-child th, .ov-table tbody tr:last-child td { border-bottom: 0; }
    .ov-table tbody tr:hover, .cmp-table tbody tr:hover { background: #fbfdfb; }

    /* ===== 关于：公司/地域说明（GEO 实体信息） ===== */
    .about-note {
      margin-top: 20px; background: #fff; border: 1px solid var(--line);
      border-radius: var(--radius-lg); padding: 34px 32px;
    }
    .about-note h3 { font-size: 18px; font-weight: 600; margin-bottom: 12px; }
    .about-note p { font-size: 14.5px; color: var(--ink-3); line-height: 1.95; }
    .about-note p + p { margin-top: 12px; }
    .about-note strong { color: var(--ink-2); font-weight: 600; }

    /* ===== 套餐对比表 ===== */
    .cmp-wrap {
      margin-top: 40px; background: #fff; border: 1px solid var(--line);
      border-radius: var(--radius-lg); padding: 34px 30px 26px; overflow-x: auto;
    }
    .cmp-wrap h3 { font-size: 18px; font-weight: 600; margin-bottom: 18px; }
    .cmp-table { min-width: 720px; }
    .cmp-table thead th {
      text-align: center; font-size: 13.5px; font-weight: 600; color: var(--ink-2);
      background: var(--panel); padding: 13px 10px; border-bottom: 1px solid var(--line);
    }
    .cmp-table thead th:first-child { text-align: left; }
    .cmp-table thead th:nth-child(3) { color: var(--orange-d); }
    .cmp-table tbody th {
      text-align: left; font-weight: 500; color: var(--ink-2);
      padding: 11px 12px; border-bottom: 1px solid var(--line); white-space: nowrap;
    }
    .cmp-table tbody td {
      text-align: center; color: var(--ink-3); padding: 11px 10px;
      border-bottom: 1px solid var(--line);
    }
    .cmp-table tbody tr:nth-child(1) td { font-weight: 700; color: var(--ink); font-size: 15px; }
    .cmp-table tbody tr:nth-child(1) td:nth-child(2) { color: var(--orange-d); }
    .cmp-note { margin-top: 14px; font-size: 12.5px; color: var(--ink-4); }

    /* ===== 常见问题（FAQ，轻量分隔线列表） ===== */
    #faq .faq-list {
      display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 46px;
      background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
      padding: 8px 36px 18px;
    }
    @media (max-width: 900px) { #faq .faq-list { grid-template-columns: 1fr; padding: 6px 24px 14px; } }
    .faq-item { padding: 22px 0 20px; border-bottom: 1px solid var(--line); }
    .faq-item h3 {
      display: flex; gap: 10px; align-items: baseline;
      font-size: 16px; font-weight: 600; color: var(--ink-2); margin-bottom: 8px; line-height: 1.6;
    }
    .faq-item h3::before { content: "Q"; flex: none; font-size: 13px; font-weight: 700; color: var(--orange-d); letter-spacing: .5px; }
    .faq-item p { font-size: 13.5px; color: var(--ink-3); line-height: 1.88; padding-left: 23px; }
    .faq-more { margin-top: 30px; text-align: center; }

    /* ===== 页脚：内容更新与地域信息 ===== */
    .foot-note { font-size: 12.5px; color: rgba(255,255,255,.42); padding-top: 4px; }
    .m-only { display: none; }
    @media (max-width: 640px) {
      .facts { padding: 26px 20px; }
      .facts .fact { grid-template-columns: 1fr; gap: 2px; }
      .ov-table, .about-note, .cmp-wrap { padding: 24px 20px; }
      .foot-bar br.m-only { display: inline; }
    }

    /* ===== 关键事实条带（替代原大列表，轻量呈现） ===== */
    .fact-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 20px; }
    @media (max-width: 900px) { .fact-strip { grid-template-columns: repeat(2, 1fr); } }
    @media (max-width: 560px) { .fact-strip { grid-template-columns: 1fr; } }
    .fchip {
      display: flex; align-items: flex-start; gap: 12px;
      background: var(--panel); border-radius: var(--radius-md); padding: 18px 20px;
      border: 1px solid transparent; transition: all .3s;
    }
    .fchip:hover { background: #fff; border-color: rgba(53,172,57,.28); box-shadow: 0 14px 30px rgba(53,172,57,.09); }
    .fchip > i { flex: none; font-size: 20px; margin-top: 1px; }
    .fchip > i.g { color: var(--green); }
    .fchip > i.o { color: var(--orange-d); }
    .fchip b { display: block; font-size: 15px; font-weight: 600; color: var(--ink-2); line-height: 1.5; }
    .fchip span { display: block; font-size: 12.5px; color: var(--ink-4); line-height: 1.65; margin-top: 3px; }
    .about-line {
      margin-top: 20px; font-size: 14px; color: var(--ink-3); line-height: 1.95;
      background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--orange);
      border-radius: 0 var(--radius-md) var(--radius-md) 0; padding: 18px 22px;
    }
    .about-line strong { color: var(--ink-2); font-weight: 600; }

    /* ===== 服务与合作：信息卡内链接 ===== */
    .facts dd a { color: var(--green); border-bottom: 1px dashed rgba(53,172,57,.5); }
    .facts dd a:hover { color: var(--orange-d); border-bottom-color: rgba(239,125,26,.5); }