:root {
      color-scheme: light;
      --ink: #18362f;
      --muted: #59736b;
      --green: #176b52;
      --green-dark: #104c3c;
      --mint: #dff3e9;
      --lime: #c9e86a;
      --paper: #f5faf6;
      --line: #dce9e1;
      --white: #fff;
      --coral: #d8674c;
      --shadow: 0 16px 40px rgba(27, 75, 57, .09);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang 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(1160px, calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      z-index: 20;
      top: 0;
      background: rgba(255,255,255,.94);
      border-bottom: 1px solid rgba(220,233,225,.9);
      backdrop-filter: blur(12px);
    }
    .nav-row { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; font-weight: 800; font-size: 18px; }
    .ai-page-logo { width: 42px; height: 42px; object-fit: contain; border-radius: 10px; }
    .nav-links { display: flex; align-items: center; gap: 0; margin-left: auto; }
    .nav-links a { padding: 10px 9px; font-size: 13px; color: #3f5b51; white-space: nowrap; transition: color .2s ease; }
    .nav-links a:hover { color: var(--green); }
    .nav-actions { display: flex; align-items: center; gap: 10px; }
    .menu-toggle { display: none; border: 1px solid var(--line); background: white; border-radius: 8px; width: 42px; height: 42px; color: var(--ink); cursor: pointer; }
    .button {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      padding: 12px 18px; border: 1px solid transparent; border-radius: 7px;
      background: var(--green); color: white; font-weight: 700; transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
    }
    .button:hover { background: var(--green-dark); transform: translateY(-2px); box-shadow: 0 8px 18px rgba(23,107,82,.2); }
    .button-secondary { color: var(--green-dark); background: white; border-color: #b9d9c9; }
    .button-secondary:hover { color: white; }
    .button-small { padding: 9px 13px; font-size: 13px; }
    .hero {
      overflow: hidden; position: relative; padding: 72px 0 42px;
      background: linear-gradient(135deg, #e7f6ed 0%, #f6fbf5 56%, #eaf4dc 100%);
      border-bottom: 1px solid #dcebe0;
    }
    .hero::before, .hero::after { content: ""; position: absolute; pointer-events: none; border: 1px solid rgba(23,107,82,.13); border-radius: 50%; }
    .hero::before { width: 460px; height: 460px; right: -125px; top: -185px; }
    .hero::after { width: 330px; height: 330px; right: -60px; top: -120px; }
    .hero-grid { position: relative; display: grid; grid-template-columns: 1.25fr .75fr; gap: 52px; align-items: center; }
    .eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--green); font-size: 13px; font-weight: 800; letter-spacing: .08em; }
    .eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--coral); }
    h1 { max-width: 700px; margin: 17px 0 18px; font-size: clamp(38px, 5vw, 62px); line-height: 1.13; letter-spacing: 0; }
    .hero-copy { max-width: 620px; margin: 0; color: #48665b; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .hero-note { margin-top: 15px; color: #60786e; font-size: 13px; }
    .hero-console { position: relative; padding: 23px; background: #fff; border: 1px solid #d8e9de; border-radius: 12px; box-shadow: var(--shadow); animation: rise .7s ease both; }
    .console-top { display: flex; justify-content: space-between; align-items: center; padding-bottom: 16px; border-bottom: 1px solid #e8f0eb; font-weight: 750; }
    .live-mark { display: inline-flex; align-items: center; gap: 7px; color: var(--green); font-size: 12px; }
    .live-mark::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: #63bb76; box-shadow: 0 0 0 4px #e5f5e8; }
    .model-cloud { display: flex; flex-wrap: wrap; gap: 8px; padding: 19px 0; }
    .model-cloud span { padding: 6px 10px; border-radius: 5px; background: #edf7f0; color: #315e4d; font-size: 12px; }
    .console-footer { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .console-stat { padding: 13px; border-radius: 7px; background: #f5faf6; }
    .console-stat strong { display: block; font-size: 18px; }
    .console-stat small { color: var(--muted); }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 48px; border-top: 1px solid #cfe2d5; }
    .metric { padding: 18px 20px 4px 0; }
    .metric strong { display: block; color: var(--green-dark); font-size: 22px; }
    .metric span { color: var(--muted); font-size: 13px; }
    .section { padding: 76px 0; }
    .section-white { background: #fff; }
    .section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 30px; }
    .section-head > div { max-width: 710px; }
    .section-kicker { color: var(--green); font-size: 12px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
    h2 { margin: 7px 0 9px; font-size: clamp(27px, 3vw, 38px); line-height: 1.25; }
    .section-head p, .intro-copy { margin: 0; color: var(--muted); }
    .text-link { color: var(--green); font-weight: 750; white-space: nowrap; }
    .intro-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 45px; align-items: start; }
    .intro-copy { font-size: 16px; }
    .intro-copy p { margin: 0 0 14px; }
    .capability-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 26px; border-top: 1px solid var(--line); }
    .capability-list div { padding: 16px 0; border-bottom: 1px solid var(--line); }
    .capability-list strong { display: block; margin-bottom: 3px; }
    .capability-list span { color: var(--muted); font-size: 13px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .service-item { padding: 20px; min-height: 150px; background: white; border: 1px solid var(--line); border-radius: 8px; transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
    .service-item:hover { transform: translateY(-4px); border-color: #a5ceb5; box-shadow: 0 12px 24px rgba(32,82,61,.08); }
    .service-index { color: var(--coral); font-size: 12px; font-weight: 800; }
    .service-item h3 { margin: 8px 0 6px; font-size: 17px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-item:nth-child(3n+2) { background: #f2f8f3; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
    .workflow-item { position: relative; padding: 18px 18px 18px 0; border-top: 2px solid #9bc4aa; counter-increment: step; }
    .workflow-item::before { content: "0" counter(step); color: var(--green); font-size: 13px; font-weight: 800; }
    .workflow-item h3 { margin: 9px 0 6px; font-size: 17px; }
    .workflow-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .solution-band { background: #e8f3e9; border-block: 1px solid #d9e8dc; }
    .solution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
    .solution { padding-left: 16px; border-left: 3px solid var(--lime); }
    .solution h3 { margin: 0 0 7px; font-size: 17px; }
    .solution p { margin: 0; color: var(--muted); font-size: 14px; }
    .network { display: flex; flex-wrap: wrap; gap: 9px; padding-top: 10px; }
    .network span { padding: 8px 12px; border: 1px solid #c8dfd0; border-radius: 5px; background: #fff; color: #315b49; font-size: 13px; }
    .case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
    .case-card { overflow: hidden; background: white; border: 1px solid var(--line); border-radius: 8px; }
    .case-card figure { margin: 0; background: #e9f2ec; }
    .case-card img { display: block; width: 100%; aspect-ratio: 16 / 8; object-fit: cover; }
    .case-body { padding: 18px 20px 20px; }
    .case-body h3 { margin: 0 0 6px; font-size: 18px; }
    .case-body p { margin: 0; color: var(--muted); font-size: 14px; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .review { padding: 19px; background: white; border-top: 3px solid #a9d276; box-shadow: 0 8px 24px rgba(35,75,56,.05); }
    .review p { margin: 0 0 15px; color: #405d50; font-size: 14px; }
    .review strong { display: block; font-size: 13px; }
    .review span { color: var(--muted); font-size: 12px; }
    .rating-panel { display: grid; grid-template-columns: .8fr 1.2fr; gap: 30px; align-items: center; margin-bottom: 22px; padding: 22px 25px; background: #eaf5ec; border-left: 4px solid var(--green); }
    .rating-score { display: flex; align-items: baseline; gap: 8px; }
    .rating-score strong { color: var(--green-dark); font-size: 42px; line-height: 1; }
    .stars { color: #b77724; font-size: 20px; letter-spacing: 2px; }
    .rating-panel p { margin: 0; color: var(--muted); font-size: 14px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: white; }
    table { width: 100%; border-collapse: collapse; min-width: 670px; text-align: left; }
    th, td { padding: 14px 16px; border-bottom: 1px solid #e8efea; font-size: 14px; }
    th { background: #eff7f1; color: var(--green-dark); }
    td:first-child { font-weight: 700; }
    .positive { color: var(--green); font-weight: 750; }
    .form-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 38px; align-items: start; }
    .contact-copy { padding: 20px 0; }
    .contact-copy p { color: var(--muted); }
    .contact-list { padding: 0; margin: 22px 0 0; list-style: none; }
    .contact-list li { margin: 10px 0; color: #3f5b51; font-size: 14px; }
    .request-form { padding: 24px; background: white; border: 1px solid var(--line); border-radius: 8px; }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field-full { grid-column: 1 / -1; }
    label { color: #345347; font-size: 13px; font-weight: 700; }
    input, select, textarea { width: 100%; padding: 11px 12px; border: 1px solid #cbded1; border-radius: 5px; background: #fcfefc; color: var(--ink); outline: none; }
    input:focus, select:focus, textarea:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(23,107,82,.1); }
    textarea { min-height: 110px; resize: vertical; }
    .form-submit { margin-top: 16px; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-question { display: flex; justify-content: space-between; align-items: center; width: 100%; padding: 17px 0; border: 0; background: transparent; color: var(--ink); text-align: left; font-weight: 750; cursor: pointer; }
    .faq-question span:last-child { color: var(--green); font-size: 20px; transition: transform .2s ease; }
    .faq-answer { display: none; max-width: 900px; padding: 0 34px 17px 0; color: var(--muted); font-size: 14px; }
    .faq-item[open] .faq-answer { display: block; }
    .faq-item[open] .faq-question span:last-child { transform: rotate(45deg); }
    .resource-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
    .resource-list { padding: 0; margin: 0; list-style: none; }
    .resource-list li { padding: 12px 0; border-bottom: 1px solid var(--line); }
    .resource-list a { color: var(--green-dark); font-weight: 700; }
    .resource-list small { display: block; color: var(--muted); }
    .friend-links { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 20px; }
    .friend-links a { color: var(--green); font-size: 13px; text-decoration: underline; text-underline-offset: 3px; }
    .site-footer { padding: 26px 0; background: #e7f1e9; color: #25483a; border-top: 1px solid #d4e3d8; }
    .footer-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .footer-row p { margin: 0; font-size: 13px; }
    .footer-row a { color: #176b52; }
    .float-contact { position: fixed; z-index: 15; right: 18px; bottom: 18px; display: flex; flex-direction: column; gap: 8px; }
    .float-contact a { display: flex; align-items: center; justify-content: center; min-width: 48px; min-height: 44px; padding: 0 13px; border-radius: 6px; background: var(--green-dark); color: white; box-shadow: 0 6px 18px rgba(16,76,60,.22); font-size: 13px; font-weight: 700; }
    .float-contact a:hover { background: var(--green); }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
    @media (max-width: 1040px) {
      .nav-links { display: none; position: absolute; top: 75px; left: 0; right: 0; padding: 10px 20px 16px; background: white; border-bottom: 1px solid var(--line); flex-wrap: wrap; justify-content: center; }
      .nav-links.is-open { display: flex; }
      .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
      .nav-actions .button { display: none; }
    }
    @media (max-width: 760px) {
      .container { width: min(100% - 32px, 1160px); }
      .hero { padding: 52px 0 28px; }
      .hero-grid, .intro-layout, .form-layout, .rating-panel { grid-template-columns: 1fr; gap: 25px; }
      .hero-grid { gap: 28px; }
      h1 { font-size: 42px; }
      .metrics { grid-template-columns: repeat(2, 1fr); margin-top: 30px; }
      .metric { padding: 14px 8px 5px 0; }
      .section { padding: 56px 0; }
      .section-head { align-items: start; flex-direction: column; gap: 10px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .workflow { grid-template-columns: repeat(2, 1fr); gap: 16px; }
      .solution-grid { grid-template-columns: 1fr; gap: 22px; }
      .review-grid { grid-template-columns: repeat(2, 1fr); }
      .form-grid { grid-template-columns: 1fr; }
      .field-full { grid-column: auto; }
      .resource-grid { grid-template-columns: 1fr; gap: 25px; }
      .footer-row { align-items: flex-start; flex-direction: column; }
    }
    @media (max-width: 480px) {
      .nav-row { min-height: 66px; }
      .brand { font-size: 16px; }
      .ai-page-logo { width: 36px; height: 36px; }
      .nav-links { top: 65px; }
      .hero { padding-top: 42px; }
      h1 { font-size: 36px; }
      .hero-copy { font-size: 15px; }
      .hero-actions .button { width: 100%; }
      .service-grid, .case-grid, .review-grid, .capability-list { grid-template-columns: 1fr; }
      .service-item { min-height: auto; }
      .workflow { grid-template-columns: 1fr 1fr; }
      .hero-console { padding: 18px; }
      .request-form { padding: 18px; }
      .float-contact { right: 10px; bottom: 10px; }
      .float-contact a { min-width: 42px; padding-inline: 10px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }