:root {
      --mint-50: #f2fbf7;
      --mint-100: #e2f5ec;
      --mint-200: #c6ead9;
      --mint-300: #96d4b9;
      --mint-500: #2b9b72;
      --mint-600: #197957;
      --ink: #17332b;
      --muted: #5e756d;
      --line: #dce9e2;
      --paper: #ffffff;
      --warm: #fffaf1;
      --orange: #d87939;
      --shadow: 0 18px 45px rgba(31, 91, 68, .11);
      --radius: 10px;
      --container: 1180px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--mint-50);
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
      line-height: 1.7;
    }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    img { max-width: 100%; height: auto; display: block; }
    .container {
      width: min(var(--container), calc(100% - 40px));
      margin: 0 auto;
    }
    .section {
      padding: 92px 0;
      position: relative;
    }
    .section.alt { background: var(--paper); }
    .section.warm { background: var(--warm); }
    .section-heading {
      max-width: 720px;
      margin-bottom: 42px;
    }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      color: var(--mint-600);
      font-size: .82rem;
      font-weight: 700;
      letter-spacing: .08em;
      text-transform: uppercase;
      margin-bottom: 12px;
    }
    .eyebrow::before {
      content: "";
      width: 25px;
      height: 2px;
      background: var(--mint-500);
    }
    h1, h2, h3, p { margin-top: 0; }
    h1, h2, h3 { line-height: 1.25; }
    h1 {
      font-size: clamp(2.35rem, 6vw, 4.9rem);
      letter-spacing: 0;
      margin-bottom: 24px;
      max-width: 780px;
    }
    h2 {
      font-size: clamp(1.85rem, 3.4vw, 3rem);
      margin-bottom: 16px;
    }
    h3 { font-size: 1.18rem; margin-bottom: 10px; }
    .lead {
      color: var(--muted);
      font-size: 1.08rem;
      max-width: 680px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(242, 251, 247, .94);
      border-bottom: 1px solid rgba(198, 234, 217, .85);
      backdrop-filter: blur(14px);
    }
    .header-inner {
      min-height: 74px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      flex: 0 0 auto;
    }
    .brand img {
      width: 126px;
      max-height: 42px;
      object-fit: contain;
    }
    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 0;
      flex-wrap: nowrap;
      color: #34554a;
      font-size: .88rem;
    }
    .nav-links a {
      padding: 8px 9px;
      white-space: nowrap;
      transition: color .2s ease, background .2s ease;
    }
    .nav-links a:hover {
      color: var(--mint-600);
      background: var(--mint-100);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 10px;
      flex: 0 0 auto;
    }
    .menu-toggle {
      display: none;
      border: 1px solid var(--line);
      background: var(--paper);
      color: var(--ink);
      width: 42px;
      height: 40px;
      border-radius: 7px;
      cursor: pointer;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 0 19px;
      border: 1px solid transparent;
      border-radius: 7px;
      font-weight: 700;
      cursor: pointer;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }
    .btn:hover { transform: translateY(-2px); box-shadow: 0 9px 20px rgba(31, 91, 68, .14); }
    .btn-primary { background: var(--mint-600); color: #fff; }
    .btn-secondary { background: var(--paper); border-color: var(--mint-300); color: var(--mint-600); }
    .btn-warm { background: var(--orange); color: #fff; }
    .btn-small { min-height: 38px; padding: 0 14px; font-size: .88rem; }

    .hero {
      overflow: hidden;
      padding: 94px 0 74px;
      background: var(--mint-50);
    }
    .hero-grid {
      position: relative;
      display: grid;
      grid-template-columns: minmax(0, 1.12fr) minmax(320px, .88fr);
      align-items: center;
      gap: 72px;
    }
    .hero-copy { position: relative; z-index: 1; }
    .hero-copy .lead { font-size: 1.18rem; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 30px 0 28px; }
    .hero-note {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      color: var(--muted);
      font-size: .88rem;
    }
    .hero-note span::before {
      content: "✓";
      color: var(--mint-600);
      font-weight: 800;
      margin-right: 6px;
    }
    .hero-visual {
      min-height: 390px;
      position: relative;
      border-left: 1px solid var(--mint-200);
      padding-left: 48px;
      display: flex;
      align-items: center;
    }
    .trace-board {
      width: 100%;
      border: 1px solid var(--mint-300);
      background: var(--paper);
      box-shadow: var(--shadow);
      border-radius: 12px;
      padding: 22px;
      position: relative;
      overflow: hidden;
    }
    .trace-board::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0;
      width: 7px;
      height: 100%;
      background: var(--mint-500);
    }
    .trace-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--line);
    }
    .trace-status {
      color: var(--mint-600);
      font-size: .78rem;
      font-weight: 700;
      background: var(--mint-100);
      padding: 5px 9px;
      border-radius: 4px;
    }
    .trace-row {
      display: grid;
      grid-template-columns: 72px 1fr auto;
      gap: 14px;
      align-items: center;
      padding: 16px 0;
      border-bottom: 1px solid #edf4ef;
      font-size: .88rem;
    }
    .trace-row:last-child { border-bottom: 0; }
    .trace-time { color: var(--muted); font-variant-numeric: tabular-nums; }
    .trace-model { font-weight: 700; }
    .trace-model small { display: block; color: var(--muted); font-weight: 400; margin-top: 3px; }
    .trace-tag { font-size: .75rem; color: var(--mint-600); }
    .hero-line {
      position: absolute;
      right: -80px;
      top: -35px;
      width: 250px;
      height: 250px;
      border: 22px solid var(--mint-200);
      border-left-color: transparent;
      border-bottom-color: transparent;
      transform: rotate(25deg);
      opacity: .75;
    }
    .stat-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      border-top: 1px solid var(--mint-200);
      margin-top: 70px;
    }
    .stat-item { padding: 23px 22px 0 0; border-right: 1px solid var(--mint-200); }
    .stat-item:not(:first-child) { padding-left: 22px; }
    .stat-item:last-child { border-right: 0; }
    .stat-number { color: var(--mint-600); font-size: 2rem; font-weight: 800; line-height: 1.2; }
    .stat-label { color: var(--muted); font-size: .88rem; margin-top: 5px; }

    .intro-layout {
      display: grid;
      grid-template-columns: .8fr 1.2fr;
      gap: 70px;
      align-items: start;
    }
    .intro-layout .section-heading { margin-bottom: 0; }
    .intro-text p { color: var(--muted); }
    .pill-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
    .pill {
      padding: 7px 11px;
      border: 1px solid var(--mint-200);
      background: var(--mint-50);
      color: var(--mint-600);
      border-radius: 5px;
      font-size: .82rem;
    }
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }
    .feature-card, .service-card, .review-card, .case-card, .network-card, .price-card {
      background: var(--paper);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 24px;
      transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    }
    .feature-card:hover, .service-card:hover, .review-card:hover, .case-card:hover, .network-card:hover, .price-card:hover {
      transform: translateY(-5px);
      border-color: var(--mint-300);
      box-shadow: var(--shadow);
    }
    .feature-icon {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      background: var(--mint-100);
      color: var(--mint-600);
      border-radius: 6px;
      font-weight: 800;
      margin-bottom: 17px;
    }
    .feature-card p, .service-card p, .network-card p, .case-card p, .review-card p { color: var(--muted); font-size: .92rem; margin-bottom: 0; }
    .services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .service-card { padding: 22px; }
    .service-card h3 { font-size: 1.05rem; }
    .service-label { color: var(--orange); font-size: .76rem; font-weight: 800; margin-bottom: 10px; }
    .workflow {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 0;
      border-top: 1px solid var(--mint-300);
      border-bottom: 1px solid var(--mint-300);
    }
    .workflow-step { position: relative; padding: 29px 20px 29px 0; }
    .workflow-step:not(:last-child) { margin-right: 24px; }
    .workflow-step:not(:last-child)::after {
      content: "→";
      position: absolute;
      right: 4px;
      top: 45px;
      color: var(--mint-500);
      font-size: 1.4rem;
    }
    .step-number { color: var(--mint-500); font-weight: 800; font-size: .83rem; margin-bottom: 12px; }
    .workflow-step p { color: var(--muted); font-size: .9rem; margin-bottom: 0; }
    .solution-grid, .network-grid, .case-grid, .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .solution-card {
      background: var(--mint-100);
      padding: 24px;
      border-left: 4px solid var(--mint-500);
    }
    .solution-card p { color: var(--muted); margin-bottom: 0; }
    .network-card { background: var(--paper); }
    .network-card strong { display: block; margin-bottom: 9px; color: var(--mint-600); }
    .case-card { padding: 0; overflow: hidden; }
    .case-image-wrap { aspect-ratio: 16 / 8; overflow: hidden; background: var(--mint-100); }
    .case-image-wrap img { width: 100%; height: 100%; object-fit: cover; }
    .case-content { padding: 21px; }
    .case-content p { margin-bottom: 15px; }
    .case-meta { display: flex; flex-wrap: wrap; gap: 7px; }
    .case-meta span { font-size: .76rem; color: var(--mint-600); background: var(--mint-100); padding: 4px 7px; border-radius: 4px; }
    .compare-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); }
    .compare-table { width: 100%; min-width: 760px; border-collapse: collapse; }
    .compare-table th, .compare-table td { padding: 18px 20px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
    .compare-table th { background: var(--mint-100); color: var(--mint-600); font-size: .87rem; }
    .compare-table tr:last-child td { border-bottom: 0; }
    .compare-table td:first-child { font-weight: 700; width: 22%; }
    .score-box {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 22px;
      background: var(--ink);
      color: #fff;
      padding: 24px 28px;
      border-radius: var(--radius);
      margin-bottom: 20px;
    }
    .score-box strong { font-size: 2.8rem; color: #c7f2d9; line-height: 1; }
    .score-box span { color: #d6e8df; }
    .score-stars { color: #f3b860; letter-spacing: 3px; font-size: 1.2rem; }
    .review-grid { grid-template-columns: repeat(3, 1fr); }
    .review-card { position: relative; }
    .review-card::before { content: "“"; color: var(--mint-300); font-size: 3.4rem; line-height: 1; font-family: Georgia, serif; }
    .review-card p { color: var(--ink); margin: 8px 0 20px; }
    .review-user { font-size: .82rem; color: var(--muted); font-weight: 700; }
    .review-user span { display: block; color: var(--mint-600); font-weight: 400; }
    .match-layout, .contact-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 50px; align-items: start; }
    .check-list { list-style: none; padding: 0; margin: 25px 0 0; }
    .check-list li { padding: 10px 0 10px 28px; position: relative; border-bottom: 1px solid var(--line); color: var(--muted); }
    .check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--mint-600); font-weight: 800; }
    .form-card { background: var(--paper); border: 1px solid var(--line); padding: 28px; border-radius: var(--radius); box-shadow: 0 10px 25px rgba(31, 91, 68, .06); }
    .form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .form-field { display: flex; flex-direction: column; gap: 7px; }
    .form-field.full { grid-column: 1 / -1; }
    label { font-size: .84rem; font-weight: 700; color: var(--ink); }
    input, select, textarea {
      width: 100%;
      border: 1px solid var(--line);
      border-radius: 6px;
      padding: 12px 13px;
      background: #fbfefc;
      color: var(--ink);
      outline: none;
      transition: border-color .2s ease, box-shadow .2s ease;
    }
    input:focus, select:focus, textarea:focus { border-color: var(--mint-500); box-shadow: 0 0 0 3px rgba(43, 155, 114, .12); }
    textarea { min-height: 120px; resize: vertical; }
    .form-actions { display: flex; align-items: center; gap: 15px; flex-wrap: wrap; margin-top: 18px; }
    .form-tip { color: var(--muted); font-size: .78rem; }
    .pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .price-card { padding: 27px; }
    .price-card.featured { border-color: var(--mint-500); box-shadow: var(--shadow); }
    .price-card h3 { margin-bottom: 8px; }
    .price-caption { color: var(--muted); font-size: .86rem; min-height: 48px; }
    .price-line { display: flex; align-items: baseline; gap: 5px; margin: 20px 0; }
    .price-line strong { font-size: 2.25rem; color: var(--mint-600); }
    .price-card ul { list-style: none; padding: 0; margin: 0 0 22px; color: var(--muted); font-size: .9rem; }
    .price-card li { padding: 7px 0; border-bottom: 1px solid var(--line); }
    .price-card li::before { content: "•"; color: var(--orange); margin-right: 8px; }
    .faq-list { max-width: 900px; }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-question {
      width: 100%;
      display: flex;
      justify-content: space-between;
      gap: 20px;
      align-items: center;
      text-align: left;
      padding: 20px 0;
      border: 0;
      background: transparent;
      color: var(--ink);
      font-weight: 700;
      cursor: pointer;
    }
    .faq-question span:last-child { color: var(--mint-600); font-size: 1.4rem; transition: transform .2s ease; }
    .faq-answer { display: none; color: var(--muted); padding: 0 40px 20px 0; font-size: .94rem; }
    .faq-item.open .faq-answer { display: block; }
    .faq-item.open .faq-question span:last-child { transform: rotate(45deg); }
    .article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .article-card { background: var(--paper); border: 1px solid var(--line); padding: 22px; border-radius: var(--radius); }
    .article-card time { color: var(--orange); font-size: .78rem; font-weight: 700; }
    .article-card h3 { margin: 10px 0; }
    .article-card p { color: var(--muted); font-size: .9rem; margin-bottom: 15px; }
    .article-link { color: var(--mint-600); font-weight: 700; font-size: .88rem; }
    .feed-note { margin-top: 22px; padding: 17px 20px; border-left: 3px solid var(--mint-500); background: var(--mint-100); color: var(--muted); font-size: .86rem; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 25px; }
    .tag-cloud a { color: var(--mint-600); border: 1px solid var(--mint-200); background: var(--paper); padding: 8px 12px; border-radius: 5px; font-size: .86rem; }
    .contact-info { display: grid; gap: 16px; }
    .contact-item { padding: 18px 20px; background: var(--paper); border-left: 3px solid var(--mint-500); }
    .contact-item strong { display: block; margin-bottom: 4px; }
    .contact-item span, .contact-item a { color: var(--muted); font-size: .92rem; }
    .qr-wrap { display: flex; align-items: center; gap: 16px; }
    .qr-wrap img { width: 100px; border: 1px solid var(--line); padding: 5px; background: #fff; }
    .partner-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
      padding: 34px;
      background: var(--mint-600);
      color: #fff;
      border-radius: var(--radius);
    }
    .partner-banner h2 { margin-bottom: 8px; }
    .partner-banner p { color: #d9f0e4; margin-bottom: 0; }
    .footer {
      background: #153b30;
      color: #e4f3eb;
      padding: 58px 0 22px;
    }
    .footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 38px; }
    .footer h3 { font-size: 1rem; color: #fff; margin-bottom: 16px; }
    .footer p, .footer a, .footer li { color: #b9d4c8; font-size: .86rem; }
    .footer a:hover { color: #fff; }
    .footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
    .footer-brand img { width: 130px;  margin-bottom: 16px; }
    .footer-bottom { border-top: 1px solid rgba(228, 243, 235, .16); margin-top: 42px; padding-top: 17px; color: #9ebcaf; font-size: .78rem; display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
    .float-actions { position: fixed; right: 18px; bottom: 18px; z-index: 15; display: grid; gap: 9px; }
    .float-actions a { width: 46px; height: 46px; display: grid; place-items: center; background: var(--mint-600); color: #fff; border-radius: 50%; box-shadow: 0 8px 20px rgba(23, 51, 43, .2); font-size: .8rem; font-weight: 700; }
    .float-actions a:last-child { background: var(--orange); }
    .reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease, transform .65s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }

    @media (max-width: 1080px) {
      .nav-links { display: none; position: absolute; left: 20px; right: 20px; top: 74px; background: var(--paper); border: 1px solid var(--line); box-shadow: var(--shadow); padding: 10px; flex-direction: column; align-items: stretch; }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 11px 12px; }
      .menu-toggle { display: block; }
      .header-actions .btn { display: none; }
      .services-grid { grid-template-columns: repeat(2, 1fr); }
      .hero-grid { gap: 40px; }
    }
    @media (max-width: 820px) {
      .section { padding: 68px 0; }
      .hero { padding: 68px 0 54px; }
      .hero-grid, .intro-layout, .match-layout, .contact-layout { grid-template-columns: 1fr; gap: 36px; }
      .hero-visual { border-left: 0; border-top: 1px solid var(--mint-200); padding: 35px 0 0; min-height: auto; }
      .stat-strip { grid-template-columns: repeat(2, 1fr); margin-top: 48px; }
      .stat-item:nth-child(2) { border-right: 0; }
      .stat-item:nth-child(n+3) { border-top: 1px solid var(--mint-200); padding-top: 18px; }
      .feature-grid, .solution-grid, .network-grid, .case-grid, .review-grid, .pricing-grid, .article-grid { grid-template-columns: repeat(2, 1fr); }
      .workflow { grid-template-columns: 1fr; }
      .workflow-step { padding: 20px 0; border-bottom: 1px solid var(--mint-200); }
      .workflow-step:last-child { border-bottom: 0; }
      .workflow-step:not(:last-child) { margin-right: 0; }
      .workflow-step:not(:last-child)::after { content: "↓"; right: 10px; top: 29px; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
      .partner-banner { align-items: flex-start; flex-direction: column; }
    }
    @media (max-width: 560px) {
      .container { width: min(var(--container), calc(100% - 28px)); }
      .brand img { width: 108px; }
      h1 { font-size: 2.35rem; }
      .hero-actions .btn { width: 100%; }
      .feature-grid, .services-grid, .solution-grid, .network-grid, .case-grid, .review-grid, .pricing-grid, .article-grid, .form-grid, .footer-grid { grid-template-columns: 1fr; }
      .stat-item { padding-left: 0 !important; }
      .form-field.full { grid-column: auto; }
      .score-box { align-items: flex-start; flex-direction: column; gap: 10px; }
      .footer-bottom { display: block; }
      .footer-bottom span { display: block; margin-top: 8px; }
    }