:root {
      color-scheme: light;
      --ink: #202224;
      --muted: #62676b;
      --paper: #f8f8f5;
      --white: #fff;
      --line: #dedfd9;
      --red: #e84735;
      --lime: #d7f26b;
      --blue: #235cce;
      --teal: #13877a;
      --max: 1160px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 86px; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    img { max-width: 100%; height: auto; }
    .container { width: min(var(--max), calc(100% - 40px)); margin-inline: auto; }
    .skip-link { position: absolute; left: 12px; top: -50px; z-index: 20; background: var(--lime); padding: 8px 12px; color: var(--ink); }
    .skip-link:focus { top: 10px; }
    .site-header { position: sticky; top: 0; z-index: 10; background: rgba(248,248,245,.94); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(32,34,36,.1); }
    .nav-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; font-weight: 800; }
    .brand img { width: 36px; height: 36px; object-fit: contain; }
    .brand-name { font-size: 17px; letter-spacing: 0; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 9px 8px; font-size: 12px; font-weight: 650; color: #44494d; transition: color .2s ease; }
    .nav-links a:hover, .nav-links a:focus-visible { color: var(--red); }
    .nav-links .nav-cta { margin-left: 8px; padding: 9px 15px; color: var(--white); background: var(--ink); border-radius: 3px; }
    .menu-toggle { display: none; border: 1px solid var(--line); background: var(--white); color: var(--ink); padding: 8px 11px; cursor: pointer; border-radius: 3px; }

    .hero { position: relative; overflow: hidden; background: var(--lime); border-bottom: 1px solid var(--ink); }
    .hero::after { content: ""; position: absolute; width: 270px; height: 270px; right: max(3vw, calc((100vw - var(--max))/2)); top: 16px; border: 1px solid rgba(32,34,36,.24); border-radius: 50%; box-shadow: 0 0 0 28px rgba(32,34,36,.035), 0 0 0 58px rgba(32,34,36,.025); pointer-events: none; }
    .hero-inner { position: relative; z-index: 1; padding-block: 70px 52px; }
    .hero-copy { max-width: 760px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 18px; font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: 0; }
    .eyebrow::before { content: ""; width: 24px; height: 3px; background: var(--red); }
    h1 { max-width: 740px; margin: 0; font-size: clamp(38px, 6vw, 72px); line-height: 1.08; letter-spacing: 0; }
    .hero-copy p { max-width: 640px; margin: 20px 0 25px; font-size: 17px; color: #34383a; }
    .actions { display: flex; flex-wrap: wrap; gap: 10px; }
    .button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; padding: 11px 18px; border: 1px solid var(--ink); border-radius: 3px; font-weight: 750; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
    .button:hover { transform: translateY(-2px); box-shadow: 4px 4px 0 var(--ink); }
    .button-primary { background: var(--ink); color: var(--white); }
    .button-light { background: transparent; color: var(--ink); }
    .hero-strip { display: flex; gap: 26px; flex-wrap: wrap; margin-top: 44px; padding-top: 16px; border-top: 1px solid rgba(32,34,36,.25); font-size: 12px; font-weight: 700; }
    .hero-strip span::before { content: "↗"; color: var(--red); margin-right: 8px; }

    main { overflow: clip; }
    .section { padding-block: 76px; border-bottom: 1px solid var(--line); }
    .section-white { background: var(--white); }
    .section-dark { background: #202224; color: #f7f7f3; }
    .section-red { background: var(--red); color: #fff; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 25px; margin-bottom: 30px; }
    .section-head > div { max-width: 720px; }
    .kicker { margin: 0 0 8px; color: var(--red); font-size: 12px; font-weight: 850; text-transform: uppercase; }
    .section-dark .kicker, .section-red .kicker { color: var(--lime); }
    h2 { margin: 0; font-size: clamp(27px, 4vw, 42px); line-height: 1.18; letter-spacing: 0; }
    .section-intro { max-width: 680px; margin: 12px 0 0; color: var(--muted); }
    .section-dark .section-intro, .section-red .section-intro { color: rgba(255,255,255,.78); }
    h3 { margin: 0 0 10px; font-size: 19px; line-height: 1.35; letter-spacing: 0; }
    p { margin-top: 0; }
    .intro-layout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: start; }
    .intro-copy p { color: var(--muted); }
    .principles { border-top: 2px solid var(--ink); }
    .principle { display: grid; grid-template-columns: 46px 1fr; gap: 14px; padding: 17px 0; border-bottom: 1px solid var(--line); }
    .principle-number { color: var(--red); font-weight: 900; font-variant-numeric: tabular-nums; }
    .principle p { margin: 3px 0 0; color: var(--muted); font-size: 14px; }
    .metric-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid rgba(255,255,255,.28); }
    .metric { padding: 23px 20px 20px 0; border-right: 1px solid rgba(255,255,255,.25); }
    .metric:not(:first-child) { padding-left: 20px; }
    .metric:last-child { border-right: 0; }
    .metric strong { display: block; font-size: 29px; line-height: 1.15; color: var(--lime); }
    .metric span { display: block; margin-top: 7px; color: rgba(255,255,255,.78); font-size: 13px; }

    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
    .service { min-height: 180px; padding: 23px; background: var(--white); transition: transform .2s ease, box-shadow .2s ease; }
    .service:hover { position: relative; z-index: 1; transform: translateY(-3px); box-shadow: 0 10px 24px rgba(32,34,36,.1); }
    .service-mark { display: block; width: 28px; height: 4px; margin-bottom: 17px; background: var(--red); }
    .service p { margin: 0; color: var(--muted); font-size: 14px; }
    .service:nth-child(3n+2) .service-mark { background: var(--blue); }
    .service:nth-child(3n) .service-mark { background: var(--teal); }
    .service-tail { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-top: 20px; padding: 16px 18px; background: #edf2d8; }
    .service-tail p { margin: 0; font-weight: 700; }

    .step-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
    .step { position: relative; padding-top: 20px; border-top: 2px solid var(--lime); counter-increment: step; }
    .step::before { content: "0" counter(step); display: block; margin-bottom: 18px; color: var(--lime); font-size: 13px; font-weight: 850; }
    .step p { margin: 0; color: rgba(255,255,255,.72); font-size: 14px; }
    .score-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 42px; align-items: start; }
    .score-panel { padding: 25px; color: var(--ink); background: var(--lime); }
    .score-number { font-size: 58px; font-weight: 900; line-height: 1; }
    .stars { margin-top: 8px; color: var(--red); font-size: 20px; letter-spacing: 0; }
    .score-panel p { margin: 14px 0 0; font-size: 14px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); }
    table { width: 100%; min-width: 600px; border-collapse: collapse; background: var(--white); color: var(--ink); text-align: left; }
    th, td { padding: 13px 15px; border-bottom: 1px solid var(--line); vertical-align: top; }
    th { background: #f0f1eb; font-size: 13px; }
    td { font-size: 14px; }
    tr:last-child td { border-bottom: 0; }
    td:last-child { color: #23614f; font-weight: 700; }

    .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .case-item { padding-top: 17px; border-top: 3px solid var(--red); }
    .case-item:nth-child(2) { border-color: var(--blue); }
    .case-item:nth-child(3) { border-color: var(--teal); }
    .case-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .media-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 30px; }
    .media-frame { overflow: hidden; background: #ecece7; border: 1px solid var(--line); }
    .media-frame img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
    .media-frame.square img { aspect-ratio: 1; }
    .media-caption { padding: 11px 13px; color: var(--muted); background: var(--white); font-size: 12px; }

    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px 26px; }
    .review { padding: 18px 0 0; border-top: 1px solid rgba(255,255,255,.35); }
    .review blockquote { margin: 0 0 13px; font-size: 15px; }
    .review cite { color: var(--lime); font-size: 12px; font-style: normal; font-weight: 750; }

    .faq-list { border-top: 1px solid var(--line); }
    .faq-list details { border-bottom: 1px solid var(--line); }
    .faq-list summary { position: relative; padding: 17px 35px 17px 0; cursor: pointer; list-style: none; font-weight: 750; }
    .faq-list summary::-webkit-details-marker { display: none; }
    .faq-list summary::after { content: "+"; position: absolute; right: 3px; top: 14px; color: var(--red); font-size: 22px; }
    .faq-list details[open] summary::after { content: "−"; }
    .faq-list details p { max-width: 850px; margin: 0; padding: 0 30px 18px 0; color: var(--muted); font-size: 14px; }

    .article-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 26px; border-top: 1px solid var(--line); }
    .article-link { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding: 15px 0; border-bottom: 1px solid var(--line); font-weight: 700; }
    .article-link span:last-child { color: var(--red); }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
    .tag-cloud span { padding: 7px 10px; color: var(--ink); background: var(--lime); font-size: 12px; font-weight: 750; }
    .join-layout { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 28px; padding: 24px; background: var(--lime); }
    .join-layout p { max-width: 650px; margin: 8px 0 0; color: #434844; }
    .contact-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 40px; align-items: start; }
    .contact-details { display: grid; gap: 16px; margin-top: 21px; }
    .contact-details div { padding-bottom: 13px; border-bottom: 1px solid var(--line); }
    .contact-details strong { display: block; font-size: 12px; color: var(--muted); }
    .contact-details span, .contact-details a { display: inline-block; margin-top: 3px; font-weight: 750; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding-top: 4px; }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { font-size: 13px; font-weight: 750; }
    .field input, .field select, .field textarea { width: 100%; padding: 11px 12px; color: var(--ink); background: var(--white); border: 1px solid #c9cbc5; border-radius: 2px; }
    .field textarea { min-height: 120px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--blue); outline-offset: 1px; }
    .contact-form .button { justify-self: start; cursor: pointer; }
    .qr-note { margin-top: 17px; color: var(--muted); font-size: 12px; }
    .site-footer { padding: 26px 0; color: #e8e9e4; background: #202224; }
    .footer-top { display: flex; align-items: start; justify-content: space-between; gap: 25px; }
    .footer-top p { max-width: 600px; margin: 4px 0 0; color: #c2c5bf; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 16px; }
    .footer-links a { color: #e8e9e4; font-size: 12px; }
    .footer-links a:hover { color: var(--lime); }
    .copyright { margin-top: 20px; padding-top: 13px; border-top: 1px solid #4b4d4a; color: #b8bbb5; font-size: 11px; }
    .float-contact { position: fixed; right: 16px; bottom: 18px; z-index: 8; display: flex; flex-direction: column; gap: 8px; }
    .float-contact a { display: grid; place-items: center; width: 46px; height: 46px; color: var(--white); background: var(--red); border: 1px solid var(--ink); border-radius: 50%; font-size: 12px; font-weight: 800; box-shadow: 2px 2px 0 var(--ink); }
    .float-contact a:last-child { color: var(--ink); background: var(--lime); }
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }

    @media (max-width: 980px) {
      .nav-row { min-height: 66px; }
      .menu-toggle { display: inline-flex; align-items: center; gap: 8px; }
      .nav-links { display: none; position: absolute; top: 66px; left: 0; right: 0; padding: 12px 20px 18px; background: var(--paper); border-bottom: 1px solid var(--line); }
      .nav-links.is-open { display: grid; grid-template-columns: repeat(3, 1fr); }
      .nav-links a { padding: 10px 8px; }
      .nav-links .nav-cta { margin: 4px 0 0; text-align: center; }
      .intro-layout, .score-layout, .contact-grid { grid-template-columns: 1fr; }
      .score-layout { gap: 24px; }
      .score-panel { max-width: 360px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .step-list { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 640px) {
      .container { width: min(var(--max), calc(100% - 30px)); }
      .hero-inner { padding-block: 52px 35px; }
      .hero::after { width: 155px; height: 155px; right: -42px; top: 24px; }
      h1 { max-width: 590px; font-size: 40px; }
      .hero-copy p { max-width: 520px; font-size: 15px; }
      .hero-strip { gap: 10px 18px; margin-top: 32px; }
      .section { padding-block: 54px; }
      .section-head { display: block; margin-bottom: 23px; }
      .service-grid, .case-grid, .review-grid, .media-grid, .article-links { grid-template-columns: 1fr; }
      .service { min-height: 0; }
      .service-tail, .join-layout { grid-template-columns: 1fr; display: grid; }
      .metric-grid { grid-template-columns: 1fr; }
      .metric, .metric:not(:first-child) { padding: 15px 0; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.22); }
      .metric:last-child { border-bottom: 0; }
      .step-list { gap: 25px 17px; }
      .contact-form { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
      .footer-top { display: grid; }
      .nav-links.is-open { grid-template-columns: repeat(2, 1fr); }
      .float-contact { right: 10px; bottom: 12px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }