:root {
      color-scheme: light;
      --ink: #202523;
      --muted: #5d6660;
      --paper: #f8f8f4;
      --white: #fff;
      --line: #dfe3dc;
      --green: #b8f34b;
      --green-dark: #335c16;
      --coral: #ff745f;
      --blue: #9ce2ef;
      --yellow: #ffd75e;
      --violet: #c1b2ff;
      --container: 1180px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; }
    button, input, select, textarea { font: inherit; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      z-index: 20;
      top: 0;
      background: rgba(248,248,244,.94);
      border-bottom: 1px solid rgba(32,37,35,.1);
      backdrop-filter: blur(12px);
    }
    .nav-row { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; flex: 0 0 auto; }
    .brand img { width: 42px; height: 42px; object-fit: contain; }
    .brand-name { font-size: 17px; font-weight: 800; line-height: 1.2; }
    .brand-name small { display: block; margin-top: 3px; color: var(--muted); font-size: 10px; font-weight: 600; letter-spacing: 0; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 9px 10px; color: #404743; text-decoration: none; font-size: 13px; white-space: nowrap; }
    .nav-links a:hover { color: #315412; }
    .nav-links .nav-cta { margin-left: 8px; padding: 10px 16px; background: var(--ink); color: white; font-weight: 700; }
    .menu-toggle { display: none; border: 1px solid var(--line); background: var(--white); color: var(--ink); padding: 8px 11px; cursor: pointer; }
    .hero { position: relative; overflow: hidden; padding: 72px 0 44px; background: var(--green); }
    .hero::before, .hero::after { content: ""; position: absolute; pointer-events: none; }
    .hero::before { width: 230px; height: 230px; right: 10%; top: 28px; border: 2px dashed rgba(32,37,35,.24); border-radius: 50%; animation: slow-spin 32s linear infinite; }
    .hero::after { width: 78px; height: 78px; right: 18%; top: 78px; background: var(--coral); border-radius: 50% 42% 48% 38%; transform: rotate(-18deg); }
    .hero-inner { position: relative; z-index: 1; max-width: 820px; }
    .hero-label, .section-kicker { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 800; letter-spacing: 0; text-transform: uppercase; }
    .hero-label { padding: 6px 10px; border: 1px solid rgba(32,37,35,.35); }
    .hero h1 { max-width: 720px; margin: 20px 0 14px; font-size: clamp(40px, 7vw, 76px); line-height: 1.04; letter-spacing: 0; }
    .hero-copy { max-width: 650px; margin: 0; color: #34402e; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
    .button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 46px; padding: 11px 18px; border: 1px solid var(--ink); background: var(--ink); color: white; text-decoration: none; font-weight: 800; transition: transform .18s ease, box-shadow .18s ease; }
    .button:hover { transform: translateY(-2px); box-shadow: 4px 4px 0 rgba(32,37,35,.2); }
    .button.light { background: transparent; color: var(--ink); }
    .hero-strip { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 54px; border: 1px solid rgba(32,37,35,.25); background: rgba(32,37,35,.25); }
    .hero-stat { padding: 16px 18px; background: var(--green); }
    .hero-stat strong { display: block; font-size: 18px; }
    .hero-stat span { display: block; color: #46513d; font-size: 12px; }
    .section { padding: 74px 0; border-bottom: 1px solid rgba(32,37,35,.1); }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
    .section-head > div { max-width: 720px; }
    .section-kicker { color: #577521; }
    h2 { margin: 8px 0 8px; font-size: clamp(28px, 4vw, 42px); line-height: 1.15; letter-spacing: 0; }
    .section-intro { max-width: 700px; margin: 0; color: var(--muted); }
    .text-link { font-weight: 800; text-decoration-thickness: 1px; text-underline-offset: 4px; }
    .about-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 42px; align-items: start; }
    .about-copy { font-size: 17px; }
    .about-copy p { margin: 0 0 16px; }
    .paint-note { margin-top: 22px; padding: 18px 20px; border-left: 5px solid var(--coral); background: #fff0e8; }
    .paint-note strong { display: block; margin-bottom: 3px; }
    .capability-list { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); }
    .capability-list div { padding: 15px 12px 15px 0; border-bottom: 1px solid var(--line); }
    .capability-list strong { display: block; font-size: 14px; }
    .capability-list span { color: var(--muted); font-size: 12px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .service-item { min-height: 190px; padding: 22px; border: 1px solid var(--ink); background: var(--white); transition: transform .18s ease, box-shadow .18s ease; }
    .service-item:hover { transform: translateY(-4px); box-shadow: 5px 5px 0 var(--ink); }
    .service-item:nth-child(4n+1) { background: #fff0e8; }
    .service-item:nth-child(4n+2) { background: #e7f6f7; }
    .service-item:nth-child(4n+3) { background: #f2edff; }
    .service-item:nth-child(4n) { background: #fff5cf; }
    .service-item h3 { margin: 0 0 8px; font-size: 19px; }
    .service-item p { margin: 0; color: #4f5853; font-size: 14px; }
    .service-tag { display: inline-block; margin-top: 15px; font-size: 11px; font-weight: 800; }
    .one-stop { background: #242b27; color: #fff; }
    .one-stop .section-kicker { color: var(--green); }
    .one-stop .section-intro { color: #cbd1cc; }
    .steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; margin-top: 32px; border-top: 1px solid #66706a; }
    .step { position: relative; padding: 22px 20px 0 0; }
    .step:not(:last-child)::after { content: ""; position: absolute; top: -5px; left: 0; width: 9px; height: 9px; background: var(--green); border-radius: 50%; }
    .step-number { color: var(--green); font-size: 12px; font-weight: 800; }
    .step h3 { margin: 8px 0 5px; font-size: 17px; }
    .step p { margin: 0; color: #cbd1cc; font-size: 13px; }
    .industries { display: grid; grid-template-columns: 1fr 1fr; gap: 0 46px; }
    .industry { display: grid; grid-template-columns: 125px 1fr; gap: 18px; padding: 19px 0; border-bottom: 1px solid var(--line); }
    .industry strong { font-size: 15px; }
    .industry span { color: var(--muted); font-size: 13px; }
    .network-band { padding: 28px; background: var(--blue); display: flex; align-items: center; justify-content: space-between; gap: 28px; }
    .network-band h3 { margin: 0 0 5px; font-size: 22px; }
    .network-band p { margin: 0; color: #3d5659; }
    .network-points { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
    .network-points span { padding: 7px 10px; border: 1px solid rgba(32,37,35,.35); font-size: 12px; font-weight: 700; }
    .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .case { border-bottom: 2px solid var(--ink); padding-bottom: 18px; }
    .case .media { overflow: hidden; margin-bottom: 14px; background: #e8e8e1; }
    .case img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
    .case h3 { margin: 0 0 5px; font-size: 18px; }
    .case p { margin: 0; color: var(--muted); font-size: 13px; }
    .case-square { display: grid; grid-template-columns: .72fr 1fr; align-items: center; gap: 24px; margin-top: 28px; padding: 20px; background: #fff0e8; }
    .case-square img { width: 100%; height: auto; aspect-ratio: 1; object-fit: cover; }
    .case-square h3 { margin: 0 0 8px; }
    .case-square p { margin: 0; color: var(--muted); }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .review { padding: 19px; border-top: 3px solid var(--coral); background: var(--white); }
    .review:nth-child(2n) { border-color: #688dce; }
    .review p { margin: 0 0 14px; font-size: 14px; }
    .review strong { font-size: 12px; }
    .review small { display: block; color: var(--muted); font-size: 11px; }
    .review-note { margin: 14px 0 0; color: var(--muted); font-size: 12px; }
    .score-layout { display: grid; grid-template-columns: .68fr 1.32fr; gap: 26px; align-items: start; }
    .score-panel { padding: 26px; background: var(--yellow); }
    .score-panel strong { display: block; font-size: 58px; line-height: 1; }
    .score-panel span { display: block; margin-top: 8px; font-weight: 800; }
    .stars { margin-top: 10px; color: #503e00; letter-spacing: 0; font-size: 21px; }
    .score-panel p { margin: 12px 0 0; font-size: 13px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: white; }
    table { width: 100%; min-width: 620px; border-collapse: collapse; text-align: left; }
    th, td { padding: 13px 15px; border-bottom: 1px solid var(--line); font-size: 13px; vertical-align: top; }
    th { background: #edf0e9; }
    tbody tr:last-child td { border-bottom: 0; }
    .positive { color: #3b6717; font-weight: 800; }
    .price-band { display: grid; grid-template-columns: 1.2fr .8fr; gap: 30px; align-items: center; padding: 28px; background: #e7f6f7; }
    .price-band h3 { margin: 0 0 8px; font-size: 22px; }
    .price-band p { margin: 0; color: #485c5e; }
    .price-tags { display: flex; flex-wrap: wrap; gap: 8px; }
    .price-tags span { padding: 7px 10px; background: white; border: 1px solid #bdd6d8; font-size: 12px; }
    .match-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 42px; align-items: start; }
    .match-copy { padding: 8px 0; }
    .match-copy ul { padding-left: 19px; color: var(--muted); }
    .match-copy li { margin: 8px 0; }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    label { font-size: 12px; font-weight: 800; }
    input, select, textarea { width: 100%; padding: 11px 12px; color: var(--ink); border: 1px solid #cfd5ce; border-radius: 0; background: white; }
    textarea { min-height: 118px; resize: vertical; }
    input:focus, select:focus, textarea:focus { outline: 2px solid #97c54a; outline-offset: 1px; }
    .form-submit { margin-top: 14px; cursor: pointer; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 17px 38px 17px 0; cursor: pointer; font-weight: 800; list-style: none; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; right: 2px; top: 14px; font-size: 22px; font-weight: 400; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { max-width: 820px; margin: 0; padding: 0 30px 17px 0; color: var(--muted); font-size: 14px; }
    .knowledge-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 32px; }
    .knowledge-callout { padding: 24px; background: var(--violet); }
    .knowledge-callout h3 { margin: 0 0 8px; font-size: 21px; }
    .knowledge-callout p { margin: 0; font-size: 14px; }
    .article-list { border-top: 1px solid var(--line); }
    .article-list a { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 13px 0; border-bottom: 1px solid var(--line); text-decoration: none; }
    .article-list a:hover span { text-decoration: underline; text-underline-offset: 3px; }
    .article-list small { color: var(--muted); white-space: nowrap; }
    .academy { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: center; }
    .academy-mark { padding: 27px; background: var(--coral); }
    .academy-mark strong { display: block; font-size: 28px; line-height: 1.2; }
    .academy-mark span { display: block; margin-top: 9px; font-size: 13px; }
    .academy-copy p { color: var(--muted); }
    .academy-copy .button { margin-top: 8px; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 23px; }
    .tag-cloud span { padding: 7px 10px; border: 1px solid var(--line); background: white; font-size: 12px; }
    .contact-layout { display: grid; grid-template-columns: 1fr .8fr; gap: 36px; align-items: start; }
    .contact-lines { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; margin-top: 20px; }
    .contact-lines div { padding: 12px 0; border-bottom: 1px solid var(--line); }
    .contact-lines strong { display: block; font-size: 12px; }
    .contact-lines a, .contact-lines span { color: var(--muted); font-size: 14px; text-decoration: none; }
    .qr-block { display: flex; align-items: center; gap: 18px; margin-top: 20px; padding: 16px; background: white; border: 1px solid var(--line); }
    .qr-block img { width: 110px; height: auto; }
    .qr-block strong { display: block; }
    .qr-block span { color: var(--muted); font-size: 12px; }
    .site-footer { padding: 25px 0; background: #e9ece5; color: #26302a; }
    .footer-top { display: flex; align-items: start; justify-content: space-between; gap: 30px; }
    .footer-brand { max-width: 390px; }
    .footer-brand strong { font-size: 16px; }
    .footer-brand p { margin: 5px 0 0; color: #58625b; font-size: 12px; }
    .footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px 15px; max-width: 600px; }
    .footer-links a { color: #344039; font-size: 12px; text-decoration: none; }
    .copyright { margin-top: 17px; padding-top: 12px; border-top: 1px solid #cdd3ca; color: #5d665f; font-size: 11px; }
    .floating-contact { position: fixed; z-index: 15; right: 18px; bottom: 20px; display: grid; gap: 8px; }
    .floating-contact a, .back-top { display: inline-flex; align-items: center; justify-content: center; min-width: 45px; min-height: 45px; padding: 10px; border: 1px solid var(--ink); background: var(--green); color: var(--ink); text-decoration: none; font-size: 12px; font-weight: 800; cursor: pointer; }
    .back-top { display: none; background: var(--white); }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @keyframes slow-spin { to { transform: rotate(360deg); } }
    @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-row { min-height: 68px; }
      .menu-toggle { display: inline-block; }
      .nav-links { display: none; position: absolute; left: 0; right: 0; top: 68px; padding: 10px 20px 16px; background: var(--paper); border-bottom: 1px solid var(--line); justify-content: flex-start; }
      .nav-links.is-open { display: flex; }
      .nav-links a { width: 50%; }
      .nav-links .nav-cta { width: auto; margin: 5px 0 0; }
      .about-layout, .match-layout, .contact-layout { grid-template-columns: 1fr; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .steps { grid-template-columns: repeat(3, 1fr); row-gap: 22px; }
      .case-grid { grid-template-columns: repeat(2, 1fr); }
      .score-layout { grid-template-columns: 1fr; }
    }
    @media (max-width: 640px) {
      .container { width: min(var(--container), calc(100% - 30px)); }
      .hero { padding-top: 52px; }
      .hero::before { width: 150px; height: 150px; right: -38px; top: 26px; }
      .hero::after { width: 48px; height: 48px; right: 21px; top: 66px; }
      .hero-inner { max-width: 100%; }
      .hero h1 { max-width: 390px; font-size: 44px; }
      .hero-copy { max-width: 430px; font-size: 15px; }
      .hero-strip { grid-template-columns: 1fr 1fr; margin-top: 38px; }
      .hero-stat { padding: 13px; }
      .section { padding: 52px 0; }
      .section-head { display: block; }
      .section-head > .text-link { display: inline-block; margin-top: 13px; }
      .service-grid, .case-grid, .review-grid, .industries, .knowledge-layout, .academy { grid-template-columns: 1fr; }
      .service-item { min-height: 0; }
      .steps { grid-template-columns: 1fr 1fr; }
      .industry { grid-template-columns: 100px 1fr; gap: 12px; }
      .network-band, .footer-top { align-items: flex-start; flex-direction: column; }
      .network-points { justify-content: flex-start; }
      .case-square { grid-template-columns: 1fr; }
      .case-square img { max-width: 250px; }
      .price-band { grid-template-columns: 1fr; }
      .form-grid, .contact-lines { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
      .footer-links { justify-content: flex-start; }
      .floating-contact { right: 10px; bottom: 12px; }
      .floating-contact a, .back-top { min-width: 42px; min-height: 42px; }
    }