:root {
      color-scheme: light;
      --ink: #192424;
      --muted: #5f6b68;
      --paper: #fbfcf8;
      --line: #dfe7df;
      --green: #177b5b;
      --lime: #d9ef72;
      --orange: #ff845d;
      --blue: #bfe7f2;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 90px; }
    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; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    button, a, input, select, textarea { outline-color: var(--green); }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      inset-block-start: 0;
      z-index: 20;
      background: rgba(251, 252, 248, .96);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(12px);
    }
    .header-row { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
    .brand img { width: 142px; max-height: 46px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 8px 9px; color: #43504c; font-size: 13px; border-radius: 5px; transition: color .2s, background .2s; }
    .nav-links a:hover { color: var(--green); background: #eaf4e7; }
    .nav-links .nav-cta { margin-left: 8px; padding-inline: 15px; color: #fff; background: var(--green); }
    .nav-toggle { display: none; border: 1px solid var(--line); background: #fff; color: var(--ink); border-radius: 5px; padding: 8px 12px; }
    .hero {
      position: relative;
      overflow: hidden;
      padding: 86px 0 56px;
      background: linear-gradient(125deg, #eff7d4 0%, #d9f0e5 46%, #dff3f5 100%);
    }
    .hero::before, .hero::after { content: ""; position: absolute; pointer-events: none; border: 1px solid rgba(23,123,91,.16); transform: rotate(-28deg); }
    .hero::before { width: 440px; height: 180px; right: -75px; top: 40px; border-radius: 50%; }
    .hero::after { width: 360px; height: 130px; right: 45px; top: 105px; border-radius: 50%; }
    .hero-content { position: relative; z-index: 1; max-width: 760px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 18px; color: #29694f; font-size: 13px; font-weight: 700; letter-spacing: 0; }
    .eyebrow::before { content: ""; width: 24px; height: 3px; background: var(--orange); }
    h1 { max-width: 700px; margin: 0; font-size: clamp(38px, 6vw, 68px); line-height: 1.13; letter-spacing: 0; }
    .hero-copy { max-width: 620px; margin: 20px 0 27px; color: #42524d; font-size: 17px; }
    .actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
    .button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 21px; border: 1px solid transparent; border-radius: 5px; font-weight: 700; transition: transform .2s, background .2s, box-shadow .2s; }
    .button:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(25, 65, 50, .13); }
    .button-primary { color: #fff; background: var(--green); }
    .button-primary:hover { background: #106447; }
    .button-secondary { color: var(--ink); background: rgba(255,255,255,.55); border-color: rgba(25,36,36,.18); }
    .hero-proof { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 30px; color: #52615b; font-size: 13px; }
    .hero-proof span::before { content: "✓"; margin-right: 7px; color: var(--green); font-weight: 800; }
    .metrics { position: relative; z-index: 2; margin-top: 50px; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(25,36,36,.15); }
    .metric { padding: 19px 20px 0 0; }
    .metric strong { display: block; font-size: 20px; }
    .metric span { color: var(--muted); font-size: 13px; }
    .section { padding: 76px 0; }
    .section-tint { background: #f0f5eb; }
    .section-deep { background: #e7f2ef; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
    .section-head > div { max-width: 700px; }
    .section-kicker { margin: 0 0 8px; color: var(--green); font-size: 12px; font-weight: 800; text-transform: uppercase; }
    h2 { margin: 0; font-size: clamp(27px, 4vw, 40px); line-height: 1.25; letter-spacing: 0; }
    .section-intro { margin: 10px 0 0; color: var(--muted); }
    .text-link { color: var(--green); font-weight: 700; white-space: nowrap; }
    .intro-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 44px; align-items: start; }
    .intro-copy { color: var(--muted); }
    .intro-copy p { margin: 0 0 15px; }
    .principles { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
    .principle { padding: 19px 16px 19px 0; border-bottom: 1px solid var(--line); }
    .principle strong { display: block; margin-bottom: 4px; }
    .principle span { color: var(--muted); font-size: 14px; }
    .service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .service { padding: 22px 19px; min-height: 160px; background: #fff; border: 1px solid var(--line); border-top: 3px solid var(--green); transition: transform .22s, box-shadow .22s; }
    .service:nth-child(3n+2) { border-top-color: var(--orange); }
    .service:nth-child(3n) { border-top-color: #6aaac0; }
    .service:hover, .quote:hover { transform: translateY(-4px); box-shadow: 0 12px 26px rgba(32,63,49,.08); }
    .service h3, .quote h3 { margin: 0 0 7px; font-size: 17px; }
    .service p, .quote p { margin: 0; color: var(--muted); font-size: 14px; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .step { padding: 24px 20px 24px 0; }
    .step + .step { padding-left: 20px; border-left: 1px solid var(--line); }
    .step-num { color: var(--orange); font-size: 13px; font-weight: 800; }
    .step h3 { margin: 8px 0; font-size: 17px; }
    .step p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-strip { margin-top: 28px; padding: 22px 24px; background: #fff; border-left: 4px solid var(--lime); }
    .service-strip strong { display: block; margin-bottom: 10px; }
    .tags { display: flex; flex-wrap: wrap; gap: 8px; }
    .tags span { padding: 5px 10px; color: #36534a; background: #eef5e9; font-size: 13px; }
    .image-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: start; }
    .media-frame { margin: 0; overflow: hidden; background: #e8ede7; }
    .media-frame img { display: block; width: 100%; height: auto; }
    .media-frame figcaption { padding: 12px 15px; color: var(--muted); font-size: 13px; background: #fff; }
    .image-single { width: min(430px, 100%); margin: 22px 0 0; }
    .comparison-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    .comparison { width: 100%; min-width: 710px; border-collapse: collapse; text-align: left; }
    .comparison th, .comparison td { padding: 15px 17px; border-bottom: 1px solid var(--line); vertical-align: top; }
    .comparison th { color: #fff; background: #214b3c; font-size: 14px; }
    .comparison th:first-child, .comparison td:first-child { width: 22%; font-weight: 700; }
    .comparison td { color: var(--muted); font-size: 14px; }
    .rating-band { display: flex; align-items: center; gap: 22px; margin-bottom: 20px; padding: 20px 24px; background: #e7f2d2; }
    .rating-band strong { font-size: 36px; line-height: 1; }
    .stars { color: #bb652f; font-size: 20px; letter-spacing: 0; }
    .rating-band span { color: #45564c; }
    .match-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 42px; align-items: start; }
    .match-copy { color: var(--muted); }
    .match-copy p { margin-top: 0; }
    .match-points { padding-left: 19px; }
    .match-points li { padding: 4px 0; }
    .form { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; }
    .field { display: grid; gap: 6px; }
    .field-wide { grid-column: 1 / -1; }
    .field label { font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-width: 0; padding: 11px 12px; color: var(--ink); background: #fff; border: 1px solid #cbd6cf; border-radius: 3px; }
    .field textarea { min-height: 105px; resize: vertical; }
    .form .button { justify-self: start; cursor: pointer; }
    .reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
    .quote { padding: 22px; background: #fff; border: 1px solid var(--line); transition: transform .22s, box-shadow .22s; }
    .quote p { min-height: 68px; }
    .quote h3 { margin-top: 16px; font-size: 13px; color: #426150; }
    .cases { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
    .case { display: grid; grid-template-columns: 1fr 1fr; align-items: start; background: #fff; border: 1px solid var(--line); }
    .case img { display: block; width: 100%; height: auto; }
    .case-copy { padding: 19px; }
    .case-copy h3 { margin: 0 0 8px; font-size: 17px; }
    .case-copy p { margin: 0; color: var(--muted); font-size: 14px; }
    .reviews-note { margin: 14px 0 0; color: var(--muted); font-size: 12px; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 17px 42px 17px 0; cursor: pointer; font-weight: 700; list-style: none; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; top: 13px; right: 5px; color: var(--green); font-size: 22px; transition: transform .2s; }
    .faq-item[open] summary::after { transform: rotate(45deg); }
    .faq-item p { max-width: 820px; margin: 0 0 17px; color: var(--muted); }
    .article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px 24px; }
    .article-link { display: block; padding: 13px 0; border-bottom: 1px solid var(--line); color: #31594b; overflow-wrap: anywhere; }
    .article-link:hover { color: var(--green); }
    .contact-band { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 24px; padding: 30px; background: linear-gradient(110deg, #e8f2d2, #d9efeb); }
    .contact-band h2 { font-size: 27px; }
    .contact-band p { margin: 8px 0 0; color: var(--muted); }
    .contact-links { display: flex; flex-wrap: wrap; gap: 12px 20px; margin-top: 15px; font-size: 14px; }
    .join-band { margin-top: 22px; padding: 25px 0 0; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .join-band p { margin: 4px 0 0; color: var(--muted); }
    .site-footer { margin-top: 58px; padding: 28px 0; background: #e8eee8; color: #273630; border-top: 1px solid #d3ddd4; }
    .footer-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 17px; font-size: 13px; }
    .footer-links a:hover { color: var(--green); }
    .footer-copy { margin-top: 15px; color: #53615a; font-size: 12px; }
    .home-link { display: inline-block; margin-right: 12px; color: #31594b; }
    .floating { position: fixed; z-index: 15; right: 18px; bottom: 18px; display: grid; gap: 8px; }
    .float-link { display: flex; align-items: center; justify-content: center; min-width: 52px; min-height: 48px; padding: 0 12px; color: #fff; background: var(--green); border-radius: 4px; box-shadow: 0 5px 18px rgba(20,57,43,.18); font-size: 13px; font-weight: 700; }
    .float-link.top { color: var(--ink); background: #fff; border: 1px solid var(--line); }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.visible { opacity: 1; transform: none; }
    @media (max-width: 1000px) {
      .header-row { align-items: center; }
      .nav-toggle { display: inline-flex; align-items: center; }
      .nav-links { display: none; position: absolute; inset: 74px 0 auto; padding: 14px 20px 18px; background: var(--paper); border-bottom: 1px solid var(--line); align-items: stretch; justify-content: flex-start; }
      .nav-links.open { display: flex; }
      .nav-links a { width: 50%; }
      .nav-links .nav-cta { margin: 4px 0 0; }
      .service-grid { grid-template-columns: repeat(3, 1fr); }
      .section { padding: 62px 0; }
    }
    @media (max-width: 700px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .hero { padding-top: 65px; }
      .hero::before { right: -250px; }
      .hero::after { right: -170px; }
      .hero-copy { font-size: 15px; }
      .metrics { grid-template-columns: repeat(2, 1fr); row-gap: 12px; }
      .metric { padding-top: 14px; }
      .section-head { align-items: start; flex-direction: column; }
      .intro-grid, .match-grid { grid-template-columns: 1fr; gap: 24px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
      .service { min-height: 0; padding: 17px 14px; }
      .workflow { grid-template-columns: repeat(2, 1fr); }
      .step { padding: 18px 12px 18px 0; }
      .step + .step { padding-left: 12px; }
      .step:nth-child(3) { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
      .step:nth-child(4) { border-top: 1px solid var(--line); }
      .image-pair, .cases { grid-template-columns: 1fr; }
      .reviews { grid-template-columns: 1fr 1fr; }
      .quote { padding: 17px; }
      .quote p { min-height: 0; }
      .article-grid { grid-template-columns: 1fr 1fr; gap: 6px 16px; }
      .contact-band { grid-template-columns: 1fr; padding: 23px; }
      .join-band, .footer-row { align-items: flex-start; flex-direction: column; }
      .footer-row { gap: 14px; }
      .floating { right: 10px; bottom: 10px; }
    }
    @media (max-width: 430px) {
      .brand img { width: 120px; }
      .nav-links a { width: 100%; }
      .service-grid, .reviews, .principles, .article-grid { grid-template-columns: 1fr; }
      .case { grid-template-columns: 1fr; }
      .form { grid-template-columns: 1fr; }
      .field-wide { grid-column: auto; }
      .rating-band { align-items: flex-start; flex-wrap: wrap; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }