:root {
      color-scheme: light;
      --ink: #17232d;
      --muted: #566571;
      --line: #dce5e9;
      --paper: #f7f9fc;
      --white: #fff;
      --teal: #087f78;
      --teal-dark: #075c58;
      --lime: #c9ef68;
      --coral: #f07b62;
      --blue: #dceef5;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; }
    img { max-width: 100%; height: auto; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
    .header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; color: var(--ink); text-decoration: none; font-weight: 800; white-space: nowrap; }
    .brand img { width: 42px; max-height: 42px; object-fit: contain; }
    .ai-page-logo { max-width: 100%; height: auto; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; }
    .nav-links a { padding: 10px 12px; text-decoration: none; color: #40505b; font-size: 14px; transition: color .2s ease; }
    .nav-links a:hover { color: var(--teal); }
    .nav-cta, .button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; border-radius: 4px; padding: 12px 19px; background: var(--teal); color: white; font: inherit; font-weight: 700; text-decoration: none; cursor: pointer; transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
    .nav-cta { margin-left: 12px; padding: 10px 15px; }
    .button:hover, .nav-cta:hover { background: var(--teal-dark); box-shadow: 0 8px 20px rgba(8,127,120,.18); transform: translateY(-2px); }
    .button-light { color: var(--ink); background: white; }
    .button-light:hover { color: var(--ink); background: var(--lime); }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 4px; background: white; color: var(--ink); font-size: 20px; cursor: pointer; }
    .hero { position: relative; overflow: hidden; padding: 78px 0 54px; background: #e6f2f3; border-bottom: 1px solid #d4e3e5; }
    .hero::before { content: ""; position: absolute; inset: 0 0 auto; height: 5px; background: linear-gradient(90deg, var(--teal), var(--lime), var(--coral)); }
    .hero-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(270px, .65fr); align-items: center; gap: 48px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 18px; color: var(--teal-dark); font-size: 13px; font-weight: 800; letter-spacing: 0; text-transform: uppercase; }
    .eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--coral); }
    h1, h2, h3, p { margin-top: 0; }
    h1 { max-width: 720px; margin-bottom: 17px; font-size: clamp(38px, 6vw, 68px); line-height: 1.1; letter-spacing: 0; }
    .hero-copy { max-width: 650px; margin-bottom: 27px; color: #41535d; font-size: 18px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-aside { padding: 23px 0 23px 24px; border-left: 1px solid #b8d0d2; }
    .hero-aside strong { display: block; margin-bottom: 8px; font-size: 16px; }
    .hero-aside p { margin-bottom: 0; color: var(--muted); font-size: 14px; }
    .hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 23px; }
    .tag { padding: 6px 10px; border: 1px solid #bfd5d8; border-radius: 3px; color: #315458; font-size: 12px; }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 45px; background: #c9dbdc; border: 1px solid #c9dbdc; }
    .metric { padding: 19px 20px; background: rgba(255,255,255,.72); }
    .metric strong { display: block; color: var(--teal-dark); font-size: 22px; }
    .metric span { color: var(--muted); font-size: 13px; }
    .section { padding: 76px 0; }
    .section-tint { background: #eff5f5; border-block: 1px solid #e0e8e9; }
    .section-head { max-width: 720px; margin-bottom: 32px; }
    .section-head h2 { margin-bottom: 10px; font-size: clamp(27px, 4vw, 40px); line-height: 1.2; letter-spacing: 0; }
    .section-head p { margin-bottom: 0; color: var(--muted); }
    .intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 52px; align-items: start; }
    .intro-copy { color: #40505b; }
    .intro-copy p:last-child { margin-bottom: 0; }
    .capability-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 22px; border-top: 1px solid var(--line); }
    .capability { padding: 15px 0; border-bottom: 1px solid var(--line); }
    .capability strong { display: block; margin-bottom: 3px; font-size: 15px; }
    .capability span { color: var(--muted); font-size: 13px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: #dce5e8; border: 1px solid #dce5e8; }
    .service { min-height: 165px; padding: 22px; background: white; transition: transform .2s ease, box-shadow .2s ease; }
    .service:hover { position: relative; z-index: 1; transform: translateY(-3px); box-shadow: 0 12px 24px rgba(28,60,67,.1); }
    .service h3 { margin-bottom: 7px; font-size: 17px; }
    .service p { margin-bottom: 0; color: var(--muted); font-size: 14px; }
    .service .index { display: block; margin-bottom: 13px; color: var(--teal); font-size: 12px; font-weight: 800; }
    .platform-strip { margin-top: 27px; padding: 18px 20px; background: #e4f0f0; border-left: 4px solid var(--teal); }
    .platform-strip strong { display: block; margin-bottom: 5px; }
    .platform-strip p { margin: 0; color: #43545e; font-size: 14px; }
    .process { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 23px; counter-reset: steps; }
    .step { position: relative; padding-top: 17px; border-top: 2px solid var(--teal); counter-increment: steps; }
    .step::before { content: "0" counter(steps); display: block; margin-bottom: 13px; color: var(--coral); font-size: 14px; font-weight: 800; }
    .step h3 { margin-bottom: 7px; font-size: 16px; }
    .step p { margin-bottom: 0; color: var(--muted); font-size: 14px; }
    .solution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
    .solution { padding-top: 17px; border-top: 1px solid #b7c9cc; }
    .solution h3 { font-size: 17px; }
    .solution p { margin-bottom: 0; color: var(--muted); font-size: 14px; }
    .network { display: flex; flex-wrap: wrap; gap: 9px; }
    .network span { padding: 8px 12px; background: white; border: 1px solid var(--line); color: #34464f; font-size: 13px; }
    .compare-wrap { overflow-x: auto; border: 1px solid var(--line); background: white; }
    table { width: 100%; min-width: 670px; border-collapse: collapse; text-align: left; }
    th, td { padding: 14px 17px; border-bottom: 1px solid var(--line); vertical-align: top; }
    th { background: #e5f0f0; font-size: 14px; }
    td { color: #475761; font-size: 14px; }
    tr:last-child td { border-bottom: 0; }
    .rating { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 22px; margin-bottom: 25px; padding: 20px 23px; background: #e3f2ed; border-left: 4px solid var(--teal); }
    .rating-score { color: var(--teal-dark); font-size: 38px; font-weight: 800; line-height: 1; }
    .rating-score small { display: block; margin-top: 6px; color: var(--muted); font-size: 12px; font-weight: 500; }
    .rating p { margin: 0; color: #40505b; }
    .stars { color: #ad6713; letter-spacing: 0; }
    .gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
    .gallery figure { margin: 0; padding: 12px; background: white; border: 1px solid var(--line); }
    .gallery img { display: block; width: 100%; height: auto; object-fit: contain; }
    .gallery figcaption { padding: 11px 4px 2px; color: #40505b; font-size: 14px; }
    .reviews { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
    .review { padding: 19px 0 0; border-top: 2px solid var(--teal); }
    .review blockquote { margin: 0 0 14px; color: #34444e; font-size: 14px; }
    .review cite { color: var(--muted); font-size: 13px; font-style: normal; }
    .article-list { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 15px; }
    .article-link { display: flex; min-height: 100px; flex-direction: column; justify-content: space-between; padding: 15px; background: white; border: 1px solid var(--line); text-decoration: none; transition: border-color .2s ease, transform .2s ease; }
    .article-link:hover { transform: translateY(-2px); border-color: var(--teal); }
    .article-link strong { font-size: 14px; }
    .article-link span { color: var(--teal-dark); font-size: 12px; }
    .faq-list { border-top: 1px solid #cbd7da; }
    .faq-item { border-bottom: 1px solid #cbd7da; }
    .faq-item summary { position: relative; padding: 17px 38px 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; right: 4px; top: 15px; color: var(--teal); font-size: 21px; font-weight: 400; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { max-width: 850px; margin: -2px 35px 17px 0; color: var(--muted); font-size: 14px; }
    .contact-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 46px; align-items: start; }
    .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: #33434c; font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-height: 45px; padding: 10px 12px; border: 1px solid #cad6da; border-radius: 2px; background: white; color: var(--ink); font: inherit; }
    .field textarea { min-height: 112px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid #8cc8c1; outline-offset: 1px; }
    .contact-info { padding-top: 7px; }
    .contact-info h3 { margin-bottom: 13px; font-size: 19px; }
    .contact-info p { margin-bottom: 9px; color: #45555e; font-size: 14px; }
    .contact-info a { color: var(--teal-dark); }
    .qr { width: 144px; margin-top: 12px; padding: 6px; background: white; border: 1px solid var(--line); }
    .qr img { display: block; width: 100%; height: auto; }
    .cta-band { padding: 29px 0; background: var(--teal-dark); color: white; }
    .cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .cta-inner h2 { margin-bottom: 4px; font-size: 22px; }
    .cta-inner p { margin: 0; color: #d2e7e4; font-size: 14px; }
    .site-footer { padding: 27px 0 20px; background: #e8eef0; color: #34434c; }
    .footer-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 30px; }
    .footer-brand { font-weight: 800; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
    .footer-links a { color: #40535c; font-size: 13px; text-decoration: none; }
    .footer-links a:hover { color: var(--teal-dark); text-decoration: underline; }
    .footer-bottom { display: flex; justify-content: space-between; gap: 14px; margin-top: 19px; padding-top: 14px; border-top: 1px solid #ced9dc; color: #58666e; font-size: 12px; }
    .floating { position: fixed; right: 18px; bottom: 22px; z-index: 15; display: grid; gap: 8px; }
    .floating a { display: grid; width: 48px; height: 48px; place-items: center; border: 1px solid #b9cece; border-radius: 50%; background: white; color: var(--teal-dark); font-size: 12px; font-weight: 700; text-decoration: none; box-shadow: 0 5px 16px rgba(24,50,58,.12); }
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }
    @media (max-width: 900px) {
      .menu-toggle { display: inline-grid; place-items: center; flex: 0 0 auto; }
      .header-inner { position: relative; }
      .nav-links { display: none; position: absolute; top: calc(100% - 1px); left: 0; right: 0; align-items: stretch; flex-direction: column; padding: 9px 12px 14px; background: white; border: 1px solid var(--line); border-top: 0; }
      .nav-links.is-open { display: flex; }
      .nav-links a { padding: 10px 8px; }
      .nav-cta { margin: 7px 0 0; }
      .hero-grid { grid-template-columns: 1fr; gap: 22px; }
      .hero-aside { padding: 0 0 0 16px; }
      .intro-grid, .contact-grid { grid-template-columns: 1fr; gap: 30px; }
      .article-list { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 640px) {
      .container { width: min(var(--container), calc(100% - 30px)); }
      .hero { padding: 55px 0 36px; }
      .hero-copy { font-size: 16px; }
      .metrics { grid-template-columns: repeat(2, 1fr); margin-top: 32px; }
      .metric { padding: 14px; }
      .section { padding: 54px 0; }
      .service-grid { grid-template-columns: 1fr 1fr; }
      .service { min-height: 0; padding: 17px; }
      .process { grid-template-columns: 1fr 1fr; gap: 23px 17px; }
      .solution-grid { grid-template-columns: 1fr; gap: 20px; }
      .reviews { grid-template-columns: 1fr 1fr; gap: 22px 17px; }
      .gallery { grid-template-columns: 1fr; }
      .article-list { grid-template-columns: 1fr 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .field-full { grid-column: auto; }
      .cta-inner, .footer-top, .footer-bottom { align-items: flex-start; flex-direction: column; }
      .rating { grid-template-columns: 1fr; gap: 12px; }
      .floating { right: 12px; bottom: 14px; }
      .floating a { width: 43px; height: 43px; }
    }