:root {
      color-scheme: light;
      --ink: #20231c;
      --muted: #62645c;
      --paper: #fffef8;
      --yellow: #f5c900;
      --yellow-deep: #e7b900;
      --line: #e8e6d9;
      --green: #234d3b;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; }
    button, input, select, textarea { font: inherit; }
    img { max-width: 100%; height: auto; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      z-index: 20;
      top: 0;
      background: rgba(255, 254, 248, .96);
      border-bottom: 1px solid rgba(32, 35, 28, .09);
      backdrop-filter: blur(12px);
    }
    .nav-row { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-weight: 800; white-space: nowrap; }
    .brand img { display: block; width: 42px; max-height: 42px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; }
    .nav-links a { padding: 10px 12px; text-decoration: none; color: #45473f; font-size: 14px; }
    .nav-links a:hover { color: #000; }
    .nav-cta, .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 0 20px;
      border: 1px solid var(--ink);
      border-radius: 4px;
      background: var(--ink);
      color: #fff;
      font-weight: 700;
      text-decoration: none;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }
    .nav-cta { min-height: 40px; padding-inline: 16px; font-size: 14px; }
    .button:hover, .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 18px rgba(32,35,28,.16); }
    .button-yellow { color: var(--ink); background: var(--yellow); border-color: var(--yellow); }
    .button-outline { background: transparent; color: var(--ink); }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 4px; background: #fff; color: var(--ink); font-size: 21px; }
    .hero {
      overflow: hidden;
      position: relative;
      background: var(--yellow);
      border-bottom: 1px solid rgba(32,35,28,.12);
    }
    .hero::before {
      position: absolute;
      content: "";
      width: 380px;
      height: 380px;
      right: -90px;
      top: -160px;
      border: 1px solid rgba(32,35,28,.22);
      border-radius: 50%;
      box-shadow: 0 0 0 34px rgba(255,255,255,.1), 0 0 0 68px rgba(32,35,28,.045);
      animation: orbit 24s linear infinite;
    }
    .hero-inner { position: relative; padding-block: 78px 52px; }
    .eyebrow { margin: 0 0 18px; color: #393218; font-weight: 750; font-size: 13px; text-transform: uppercase; }
    h1 { max-width: 760px; margin: 0; font-size: clamp(42px, 7vw, 76px); line-height: 1.08; font-weight: 850; }
    .hero-copy { max-width: 680px; margin: 22px 0 27px; color: #38351f; font-size: 18px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-actions .button-outline { border-color: rgba(32,35,28,.65); }
    .hero-note { margin: 14px 0 0; font-size: 13px; color: #494528; }
    .hero-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 56px; border-top: 1px solid rgba(32,35,28,.25); }
    .hero-stat { padding: 18px 16px 0 0; }
    .hero-stat strong { display: block; font-size: 17px; }
    .hero-stat span { color: #494528; font-size: 13px; }
    section { padding-block: 76px; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 30px; }
    .section-head h2 { max-width: 650px; margin: 0; font-size: clamp(29px, 4vw, 43px); line-height: 1.17; }
    .section-head p { max-width: 470px; margin: 0; color: var(--muted); }
    .kicker { margin: 0 0 10px; color: #766300; font-size: 13px; font-weight: 800; }
    .intro-layout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 58px; align-items: start; }
    .intro-layout p { color: var(--muted); }
    .model-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
    .model-list span { padding: 7px 11px; border: 1px solid #d8d6c9; border-radius: 3px; color: #3e4038; font-size: 13px; }
    .image-band { display: grid; grid-template-columns: 1.25fr 1fr; gap: 18px; align-items: start; margin-top: 34px; }
    .image-band figure { margin: 0; overflow: hidden; background: #eeece2; }
    .image-band img { display: block; width: 100%; height: auto; }
    .image-band .square-image { width: min(100%, 360px); justify-self: end; }
    .image-band figcaption { padding: 10px 13px; color: #55574f; font-size: 13px; }
    .services { background: #f1f0e8; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 28px; border-top: 1px solid #d7d5c9; }
    .service-item { padding: 23px 4px 24px 0; border-bottom: 1px solid #d7d5c9; }
    .service-item h3 { margin: 0 0 8px; font-size: 19px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-num { display: block; margin-bottom: 9px; color: #887100; font-size: 12px; font-weight: 800; }
    .feature-band { background: var(--green); color: #fff; }
    .feature-band .kicker { color: #f5d84a; }
    .feature-band .section-head p { color: #d9e4dc; }
    .feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
    .feature-grid article { padding-top: 16px; border-top: 1px solid rgba(255,255,255,.35); }
    .feature-grid h3 { margin: 0 0 8px; font-size: 18px; }
    .feature-grid p { margin: 0; color: #d9e4dc; font-size: 14px; }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
    .step { padding: 20px 0 0; border-top: 2px solid var(--yellow-deep); }
    .step strong { display: block; margin-bottom: 8px; font-size: 18px; }
    .step p { margin: 0; color: var(--muted); font-size: 14px; }
    .comparison { background: #f1f0e8; }
    .rating-line { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-bottom: 22px; }
    .rating-score { font-size: 30px; font-weight: 850; }
    .stars { color: #a98200; letter-spacing: 0; font-size: 20px; }
    .rating-note { color: var(--muted); font-size: 14px; }
    .table-wrap { overflow-x: auto; border: 1px solid #dedccd; background: #fffef9; }
    table { width: 100%; min-width: 680px; border-collapse: collapse; text-align: left; }
    th, td { padding: 14px 16px; border-bottom: 1px solid #e8e6db; vertical-align: top; }
    th { background: #f7f5eb; font-size: 14px; }
    td { color: #51534b; font-size: 14px; }
    tbody tr:last-child td { border-bottom: 0; }
    .reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .review { padding: 18px 0 0; border-top: 2px solid var(--yellow); }
    .review blockquote { margin: 0 0 16px; color: #45473f; }
    .review cite { color: #6a6c64; font-size: 13px; font-style: normal; font-weight: 700; }
    .review cite span { display: block; font-weight: 400; }
    .faq { background: #f1f0e8; }
    .faq-list { border-top: 1px solid #d7d5c9; }
    details { border-bottom: 1px solid #d7d5c9; }
    summary { position: relative; padding: 18px 36px 18px 0; cursor: pointer; list-style: none; font-weight: 750; }
    summary::-webkit-details-marker { display: none; }
    summary::after { position: absolute; right: 4px; content: "+"; font-size: 22px; font-weight: 400; }
    details[open] summary::after { content: "−"; }
    details p { max-width: 850px; margin: 0; padding: 0 34px 18px 0; color: var(--muted); }
    .contact { background: var(--yellow); }
    .contact-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 56px; align-items: start; }
    .contact h2 { margin: 0 0 14px; font-size: clamp(30px, 4vw, 44px); line-height: 1.15; }
    .contact-copy { color: #484323; }
    .contact-methods { display: grid; gap: 8px; margin-top: 24px; }
    .contact-methods a { width: fit-content; text-decoration-thickness: 1px; text-underline-offset: 3px; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
    .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%; border: 1px solid rgba(32,35,28,.35); border-radius: 3px; background: rgba(255,255,255,.76); color: var(--ink); padding: 11px 12px; }
    .field textarea { min-height: 112px; resize: vertical; }
    .contact-form .button { justify-self: start; cursor: pointer; }
    .qr-wrap { display: flex; align-items: center; gap: 14px; margin-top: 20px; }
    .qr-wrap img { width: 96px; border: 4px solid #fff; }
    .qr-wrap span { max-width: 180px; color: #484323; font-size: 13px; }
    .site-footer { padding: 30px 0; background: #20231c; color: #f5f4ec; }
    .footer-main { display: flex; align-items: start; justify-content: space-between; gap: 24px; }
    .footer-main p { margin: 5px 0 0; color: #d2d4ca; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; max-width: 590px; }
    .footer-links a { color: #f5f4ec; font-size: 13px; text-decoration-color: #8d9085; text-underline-offset: 3px; }
    .copyright { margin-top: 22px; padding-top: 14px; border-top: 1px solid #45483e; color: #c4c6bc; font-size: 12px; }
    .floating-contact { position: fixed; z-index: 15; right: 18px; bottom: 18px; }
    .floating-contact a { display: grid; place-items: center; width: 52px; height: 52px; border: 1px solid #20231c; border-radius: 50%; background: var(--yellow); color: #20231c; box-shadow: 0 5px 18px rgba(0,0,0,.15); text-decoration: none; font-size: 13px; font-weight: 800; }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @keyframes orbit { 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: 900px) {
      .nav-row { gap: 12px; }
      .nav-links a { padding-inline: 8px; font-size: 13px; }
      .nav-cta { display: none; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .feature-grid { grid-template-columns: repeat(2, 1fr); }
      .intro-layout, .contact-layout { gap: 32px; }
    }
    @media (max-width: 680px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .nav-row { min-height: 66px; }
      .menu-toggle { display: inline-grid; place-items: center; }
      .nav-links {
        display: none;
        position: absolute;
        top: 65px;
        left: 0;
        right: 0;
        padding: 8px 16px 14px;
        border-bottom: 1px solid var(--line);
        background: var(--paper);
        align-items: stretch;
        flex-direction: column;
      }
      .nav-links.is-open { display: flex; }
      .nav-links a { padding: 11px 8px; font-size: 15px; }
      .hero-inner { padding-block: 62px 36px; }
      .hero-copy { font-size: 16px; }
      .hero-strip { grid-template-columns: repeat(2, 1fr); row-gap: 12px; margin-top: 40px; }
      section { padding-block: 55px; }
      .section-head { display: block; }
      .section-head p { margin-top: 13px; }
      .intro-layout, .contact-layout { grid-template-columns: 1fr; }
      .image-band { grid-template-columns: 1fr; }
      .image-band .square-image { justify-self: start; width: min(100%, 300px); }
      .service-grid { grid-template-columns: 1fr; }
      .feature-grid, .steps, .reviews { grid-template-columns: 1fr 1fr; }
      .footer-main { display: grid; }
      .contact-form { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
    }
    @media (max-width: 420px) {
      .hero-actions { align-items: stretch; flex-direction: column; }
      .hero-actions .button { width: 100%; }
      .feature-grid, .steps, .reviews { grid-template-columns: 1fr; }
    }