:root {
      color-scheme: light;
      --ink: #17352b;
      --muted: #587068;
      --green: #177b59;
      --green-dark: #105b43;
      --mint: #dff2e7;
      --lime: #c8ee83;
      --paper: #f5faf6;
      --line: #d8e8dd;
      --white: #fff;
      --coral: #ed8b69;
      --shadow: 0 16px 42px rgba(29, 78, 55, .09);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
    }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    .container { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(245, 250, 246, .94);
      border-bottom: 1px solid rgba(216, 232, 221, .9);
      backdrop-filter: blur(14px);
    }
    .nav-row { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; font-weight: 800; }
    .brand img { display: block; width: 42px; height: auto; }
    .brand-name { font-size: 17px; letter-spacing: 0; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; }
    .nav-links a { padding: 10px 11px; color: #405d52; font-size: 13px; white-space: nowrap; transition: color .2s ease; }
    .nav-links a:hover { color: var(--green); }
    .nav-actions { display: flex; align-items: center; gap: 10px; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 8px; background: var(--white); color: var(--ink); cursor: pointer; }
    .button {
      min-height: 46px; display: inline-flex; align-items: center; justify-content: center;
      padding: 0 19px; border: 1px solid transparent; border-radius: 6px;
      background: var(--green); color: var(--white); font-weight: 700; cursor: pointer;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }
    .button:hover { transform: translateY(-2px); background: var(--green-dark); box-shadow: 0 8px 18px rgba(23, 123, 89, .18); }
    .button.secondary { background: var(--white); color: var(--green-dark); border-color: #bcdac8; }
    .button.secondary:hover { background: #eef8f1; box-shadow: none; }
    .button.small { min-height: 40px; padding-inline: 14px; font-size: 13px; }
    .hero {
      position: relative;
      overflow: hidden;
      padding: 76px 0 58px;
      background-color: #e9f6ed;
      background-image: linear-gradient(120deg, #e8f6ec 0%, #f5faf3 52%, #d9eee3 100%);
      border-bottom: 1px solid var(--line);
    }
    .hero::before, .hero::after { content: ""; position: absolute; pointer-events: none; border: 1px solid rgba(23,123,89,.16); transform: rotate(34deg); }
    .hero::before { width: 390px; height: 390px; right: 4%; top: -215px; border-radius: 42%; }
    .hero::after { width: 270px; height: 270px; right: 15%; bottom: -220px; border-radius: 48%; }
    .hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr); align-items: center; gap: 52px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--green-dark); font-size: 13px; font-weight: 800; }
    .eyebrow::before { content: ""; width: 23px; height: 2px; background: var(--coral); }
    h1 { max-width: 720px; margin: 16px 0 18px; font-size: clamp(38px, 5vw, 60px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy { max-width: 620px; margin: 0; color: #49675b; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .hero-note { margin-top: 18px; color: #61786e; font-size: 13px; }
    .hero-panel { position: relative; padding: 25px; border: 1px solid rgba(23,123,89,.18); border-radius: 10px; background: rgba(255,255,255,.76); box-shadow: var(--shadow); }
    .panel-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 17px; border-bottom: 1px solid var(--line); }
    .panel-top strong { font-size: 15px; }
    .live-mark { display: inline-flex; align-items: center; gap: 7px; color: var(--green); font-size: 12px; font-weight: 700; }
    .live-mark::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #58ad71; box-shadow: 0 0 0 4px #e2f4e6; }
    .model-cloud { display: flex; flex-wrap: wrap; gap: 8px; padding-top: 18px; }
    .model-cloud span { padding: 6px 10px; border-radius: 4px; background: #eff7f1; color: #355b4b; font-size: 12px; }
    .panel-foot { display: flex; justify-content: space-between; gap: 12px; margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
    .panel-foot b { color: var(--green-dark); font-size: 14px; }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; padding: 24px 0; border-bottom: 1px solid var(--line); }
    .metric { padding: 5px 22px; border-left: 1px solid var(--line); }
    .metric:first-child { border-left: 0; padding-left: 0; }
    .metric strong { display: block; font-size: 20px; line-height: 1.4; }
    .metric span { color: var(--muted); font-size: 12px; }
    .section { padding: 76px 0; }
    .section.tint { background: #edf7f0; border-block: 1px solid #deece1; }
    .section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
    .section-heading h2 { margin: 6px 0 0; font-size: clamp(27px, 3vw, 38px); line-height: 1.25; letter-spacing: 0; }
    .section-heading p { max-width: 530px; margin: 0; color: var(--muted); }
    .kicker { color: var(--green); font-size: 12px; font-weight: 800; letter-spacing: 0; }
    .intro-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: start; }
    .intro-copy p { margin: 0 0 15px; color: #4f685e; }
    .intro-points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 24px; margin-top: 26px; }
    .intro-points div { padding: 13px 0; border-top: 1px solid var(--line); color: #35574a; font-size: 14px; }
    .intro-points div::before { content: "＋"; margin-right: 9px; color: var(--green); font-weight: 800; }
    .feature-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .feature { padding: 17px 18px; border-left: 3px solid #9bcea9; background: #fff; }
    .feature strong { display: block; margin-bottom: 4px; font-size: 14px; }
    .feature span { color: var(--muted); font-size: 12px; }
    .service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .service-item { min-height: 155px; padding: 19px; border: 1px solid var(--line); border-radius: 7px; background: #fff; transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease; }
    .service-item:hover { transform: translateY(-4px); border-color: #a9d1b5; box-shadow: 0 12px 25px rgba(29,78,55,.08); }
    .service-item .index { display: block; margin-bottom: 12px; color: #78a887; font-size: 11px; font-weight: 800; }
    .service-item h3 { margin: 0 0 7px; font-size: 16px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
    .tool-strip { margin-top: 23px; padding: 19px 20px; border-radius: 6px; background: #e4f2e8; }
    .tool-strip strong { margin-right: 10px; font-size: 13px; }
    .tool-strip p { margin: 10px 0 0; color: #4d695d; font-size: 13px; }
    .tool-tags { display: flex; flex-wrap: wrap; gap: 7px; }
    .tool-tags span { padding: 4px 9px; border: 1px solid #c8e0cf; border-radius: 3px; background: #f8fcf8; color: #426452; font-size: 11px; }
    .split-feature { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: center; }
    .split-feature h2 { margin: 8px 0 13px; font-size: 35px; line-height: 1.25; }
    .split-feature p { color: var(--muted); }
    .split-feature .feature-list { grid-template-columns: repeat(2, 1fr); }
    .industry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px 28px; }
    .industry { padding: 15px 0; border-top: 1px solid var(--line); }
    .industry h3 { margin: 0 0 6px; font-size: 16px; }
    .industry p { margin: 0; color: var(--muted); font-size: 13px; }
    .network-band { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 25px; padding: 28px 30px; border-radius: 7px; background: #dff0e4; }
    .network-band h2 { margin: 0 0 6px; font-size: 23px; }
    .network-band p { margin: 0; color: #4c695b; }
    .network-tags { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; max-width: 450px; }
    .network-tags span { padding: 6px 10px; border: 1px solid #bddbc5; border-radius: 4px; background: #f7fcf8; color: #355d48; font-size: 12px; }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
    .step { position: relative; padding: 20px 0 0; border-top: 2px solid #a6cfaf; counter-increment: step; }
    .step::before { content: "0" counter(step); position: absolute; top: -14px; right: 0; padding-left: 8px; background: var(--paper); color: var(--green); font-size: 12px; font-weight: 800; }
    .step h3 { margin: 6px 0; font-size: 16px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
    .case { overflow: hidden; border: 1px solid var(--line); border-radius: 7px; background: #fff; }
    .case img { display: block; width: 100%; max-width: 100%; height: auto; aspect-ratio: 16 / 8; object-fit: cover; }
    .case-copy { padding: 17px 19px 20px; }
    .case-copy h3 { margin: 0 0 5px; font-size: 17px; }
    .case-copy p { margin: 0; color: var(--muted); font-size: 13px; }
    .case-square { display: grid; grid-template-columns: minmax(150px, .7fr) 1fr; align-items: center; gap: 20px; margin-top: 18px; padding: 17px; border: 1px solid var(--line); background: #fff; }
    .case-square img { display: block; width: 100%; max-width: 260px; height: auto; aspect-ratio: 1; object-fit: cover; }
    .case-square h3 { margin: 0 0 7px; }
    .case-square p { margin: 0; color: var(--muted); font-size: 13px; }
    .score-layout { display: grid; grid-template-columns: .7fr 1.3fr; gap: 32px; align-items: start; }
    .score-box { padding: 25px; border-radius: 7px; background: #dff1e4; }
    .score-box .score { color: var(--green-dark); font-size: 48px; font-weight: 800; line-height: 1; }
    .score-box .stars { margin: 11px 0 8px; color: #c87935; font-size: 20px; letter-spacing: 0; }
    .score-box p { margin: 0; color: #4e695b; font-size: 13px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
    table { width: 100%; min-width: 600px; border-collapse: collapse; text-align: left; }
    th, td { padding: 13px 15px; border-bottom: 1px solid #e7efe9; font-size: 13px; vertical-align: top; }
    th { background: #eff7f1; color: #345b47; font-weight: 800; }
    tr:last-child td { border-bottom: 0; }
    td:first-child { width: 26%; color: #315441; font-weight: 700; }
    .reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .review { padding: 20px; border-top: 2px solid #acd2b4; background: #fff; }
    .review p { margin: 0 0 15px; color: #405d50; font-size: 14px; }
    .review strong { display: block; font-size: 13px; }
    .review span { color: #74867c; font-size: 12px; }
    .match-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: start; }
    .match-layout h2 { margin: 7px 0 12px; font-size: 31px; line-height: 1.3; }
    .match-layout p { color: var(--muted); }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { color: #365647; font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-height: 45px; padding: 10px 12px; border: 1px solid #cbded0; border-radius: 4px; outline: none; background: #fff; color: var(--ink); }
    .field textarea { min-height: 112px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(23,123,89,.1); }
    .form-note { margin: 10px 0 0; color: #71837a; font-size: 12px; }
    .reference-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 35px; }
    .reference-grid h3 { margin: 0 0 12px; font-size: 17px; }
    .price-list { border-top: 1px solid var(--line); }
    .price-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
    .price-row span:last-child { color: var(--green-dark); font-weight: 700; text-align: right; }
    .price-disclaimer { margin: 12px 0 0; color: var(--muted); font-size: 12px; }
    .timeline { border-left: 2px solid #acd2b4; padding-left: 20px; }
    .timeline-item { position: relative; padding: 0 0 17px; }
    .timeline-item:last-child { padding-bottom: 0; }
    .timeline-item::before { content: ""; position: absolute; top: 8px; left: -26px; width: 8px; height: 8px; border-radius: 50%; background: var(--green); }
    .timeline-item strong { display: block; font-size: 13px; }
    .timeline-item span { color: var(--muted); font-size: 12px; }
    .faq-list { border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 17px 34px 17px 0; cursor: pointer; list-style: none; font-weight: 700; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 4px; top: 13px; color: var(--green); font-size: 22px; font-weight: 400; transition: transform .2s ease; }
    details[open] summary::after { transform: rotate(45deg); }
    details p { max-width: 850px; margin: -3px 0 17px; color: var(--muted); font-size: 14px; }
    .article-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
    .article-link { display: flex; min-height: 116px; flex-direction: column; justify-content: space-between; padding: 15px; border: 1px solid var(--line); background: #fff; transition: border-color .2s ease, transform .2s ease; }
    .article-link:hover { transform: translateY(-3px); border-color: #9ec9a9; }
    .article-link span { color: var(--green); font-size: 11px; font-weight: 800; }
    .article-link strong { font-size: 14px; line-height: 1.5; }
    .article-link small { color: #6d8276; font-size: 11px; }
    .footer { padding: 34px 0 20px; border-top: 1px solid var(--line); background: #eaf4ed; color: #244536; }
    .footer-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 36px; align-items: start; }
    .footer p { margin: 9px 0 0; color: #526b5e; font-size: 13px; }
    .footer h2 { margin: 0 0 11px; font-size: 16px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 16px; }
    .footer-links a { color: #315e47; font-size: 13px; text-decoration: underline; text-decoration-color: #b2cfb9; text-underline-offset: 3px; }
    .contact-row { display: flex; flex-wrap: wrap; gap: 9px 18px; margin-top: 12px; color: #355d48; font-size: 13px; }
    .footer-bottom { display: flex; justify-content: space-between; gap: 15px; margin-top: 25px; padding-top: 14px; border-top: 1px solid #d1e2d5; color: #60766a; font-size: 12px; }
    .qr-area { display: flex; align-items: center; gap: 12px; margin-top: 15px; }
    .qr-area img { display: block; width: 84px; height: auto; border: 1px solid #d1e2d5; background: #fff; }
    .qr-area span { max-width: 150px; color: #60766a; font-size: 12px; }
    .float-tools { position: fixed; right: 18px; bottom: 22px; z-index: 15; display: flex; flex-direction: column; gap: 8px; }
    .float-tools a, .float-tools button { display: grid; width: 46px; height: 46px; place-items: center; border: 1px solid #c8ddce; border-radius: 6px; background: #fff; color: var(--green-dark); box-shadow: 0 5px 18px rgba(29,78,55,.12); font-size: 12px; font-weight: 800; cursor: pointer; }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }
    @media (max-width: 980px) {
      .nav-links { gap: 0; }
      .nav-links a { padding-inline: 7px; font-size: 12px; }
      .nav-actions .button { padding-inline: 12px; }
      .service-grid { grid-template-columns: repeat(3, 1fr); }
      .article-list { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 760px) {
      .container { width: min(100% - 32px, 600px); }
      .nav-row { min-height: 66px; }
      .menu-toggle { display: inline-grid; place-items: center; }
      .nav-actions .button { display: none; }
      .nav-links { position: absolute; top: 66px; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; padding: 8px 16px 15px; border-bottom: 1px solid var(--line); background: #f5faf6; box-shadow: 0 12px 20px rgba(29,78,55,.07); }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 10px 8px; border-bottom: 1px solid #e4eee6; font-size: 14px; }
      .hero { padding: 55px 0 38px; }
      .hero-grid, .intro-grid, .split-feature, .score-layout, .match-layout, .footer-grid { grid-template-columns: 1fr; gap: 28px; }
      .hero-grid { gap: 30px; }
      .hero-panel { max-width: 520px; }
      .hero-copy { font-size: 15px; }
      .metrics { grid-template-columns: repeat(2, 1fr); gap: 15px 0; }
      .metric:nth-child(odd) { border-left: 0; padding-left: 0; }
      .section { padding: 55px 0; }
      .section-heading { display: block; }
      .section-heading p { margin-top: 12px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .industry-grid { grid-template-columns: repeat(2, 1fr); gap: 10px 20px; }
      .network-band { grid-template-columns: 1fr; padding: 22px; }
      .network-tags { justify-content: flex-start; }
      .steps { grid-template-columns: repeat(2, 1fr); row-gap: 26px; }
      .reviews { grid-template-columns: repeat(2, 1fr); }
      .reference-grid { grid-template-columns: 1fr; gap: 26px; }
      .article-list { grid-template-columns: repeat(2, 1fr); }
      .footer-bottom { flex-direction: column; }
    }
    @media (max-width: 480px) {
      .container { width: calc(100% - 28px); }
      h1 { font-size: 39px; }
      .hero-actions .button { width: 100%; }
      .service-grid, .industry-grid, .reviews, .feature-list, .split-feature .feature-list, .form-grid { grid-template-columns: 1fr; }
      .feature { padding: 14px; }
      .case-grid { grid-template-columns: 1fr; }
      .case-square { grid-template-columns: 1fr; }
      .case-square img { max-width: 100%; }
      .article-list { grid-template-columns: 1fr 1fr; }
      .article-link { min-height: 128px; padding: 12px; }
      .float-tools { right: 10px; bottom: 12px; }
      .float-tools a, .float-tools button { width: 42px; height: 42px; }
    }