:root {
      color-scheme: light;
      --ink: #1c2b28;
      --muted: #596965;
      --paper: #f6f8f5;
      --white: #fff;
      --green: #176b50;
      --green-dark: #10513e;
      --lime: #d6f36b;
      --line: #dce5df;
      --coral: #f47c5b;
      --blue: #dceeff;
      --container: 1160px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, 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;
      border-bottom: 1px solid rgba(28, 43, 40, .09);
      background: rgba(246, 248, 245, .94);
      backdrop-filter: blur(14px);
    }
    .nav-row { min-height: 74px; 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; height: auto; }
    .brand span { font-size: 18px; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 0; }
    .nav-links a { text-decoration: none; color: #40514c; font-size: 13px; padding: 9px 10px; border-radius: 5px; transition: color .2s, background .2s; }
    .nav-links a:hover { color: var(--green); background: #e9f0e9; }
    .nav-cta, .button {
      display: inline-flex; justify-content: center; align-items: center; gap: 9px;
      min-height: 46px; padding: 0 19px; border: 0; border-radius: 5px;
      color: #fff; background: var(--green); font-weight: 700; text-decoration: none;
      cursor: pointer; transition: background .2s, transform .2s, box-shadow .2s;
    }
    .nav-cta { min-height: 40px; padding-inline: 15px; font-size: 13px; white-space: nowrap; }
    .button:hover, .nav-cta:hover { color: #fff; background: var(--green-dark); transform: translateY(-2px); box-shadow: 0 8px 18px rgba(16, 81, 62, .18); }
    .button-light { color: var(--ink); background: #fff; border: 1px solid var(--line); }
    .button-light:hover { color: var(--green-dark); background: #f2f7f2; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 5px; background: #fff; color: var(--ink); cursor: pointer; }
    .menu-toggle svg { width: 20px; height: 20px; }

    .hero {
      position: relative; overflow: hidden; padding: 85px 0 72px;
      background: linear-gradient(118deg, #e8f5df 0%, #f6f8f5 50%, #e2f1eb 100%);
      border-bottom: 1px solid #dce8df;
    }
    .hero::before {
      content: ""; position: absolute; inset: auto -10% -150px 45%; height: 340px;
      border: 1px solid rgba(23, 107, 80, .12); border-radius: 50%;
      transform: rotate(-12deg); pointer-events: none;
    }
    .hero-inner { position: relative; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr); align-items: center; gap: 54px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--green); font-size: 13px; font-weight: 800; letter-spacing: 0; }
    .eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--coral); }
    h1 { max-width: 650px; margin: 18px 0 20px; font-size: clamp(42px, 6vw, 68px); line-height: 1.1; letter-spacing: 0; }
    .hero-copy { max-width: 600px; margin: 0; color: #465852; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 29px; }
    .hero-note { margin: 16px 0 0; color: #64736d; font-size: 12px; }
    .hero-panel { padding: 25px; border: 1px solid rgba(23, 107, 80, .18); border-radius: 8px; background: rgba(255,255,255,.76); box-shadow: 0 18px 50px rgba(34, 72, 57, .08); }
    .panel-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding-bottom: 17px; border-bottom: 1px solid var(--line); }
    .panel-top strong { font-size: 15px; }
    .live-mark { display: inline-flex; align-items: center; gap: 7px; color: var(--green); font-size: 11px; font-weight: 700; }
    .live-mark::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #5bad67; box-shadow: 0 0 0 4px #e1f1df; }
    .model-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; margin-top: 17px; }
    .model-chip { padding: 10px 6px; border-radius: 4px; background: #f0f5ef; text-align: center; color: #42564d; font-size: 12px; font-weight: 700; }
    .panel-foot { display: flex; justify-content: space-between; gap: 12px; margin-top: 18px; color: var(--muted); font-size: 12px; }
    .panel-foot b { color: var(--green); }
    .metric-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 44px; border-top: 1px solid rgba(23, 107, 80, .18); }
    .metric { padding: 20px 22px 0 0; }
    .metric strong { display: block; font-size: 15px; }
    .metric span { color: var(--muted); font-size: 12px; }

    main { overflow: hidden; }
    .section { padding: 76px 0; }
    .section-head { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 30px; }
    .section-head h2 { margin: 7px 0 0; font-size: 34px; line-height: 1.2; letter-spacing: 0; }
    .section-head p { max-width: 510px; margin: 0; color: var(--muted); font-size: 14px; }
    .kicker { color: var(--green); font-size: 12px; font-weight: 800; }
    .intro-band { display: grid; grid-template-columns: .8fr 1.2fr; gap: 52px; align-items: start; }
    .intro-title { position: sticky; top: 110px; }
    .intro-title h2 { max-width: 400px; margin: 9px 0 16px; font-size: 37px; line-height: 1.2; }
    .intro-title p { margin: 0; color: var(--muted); }
    .intro-content { padding-top: 5px; }
    .intro-content > p { margin: 0 0 23px; color: #465852; }
    .capability-list { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 0 28px; border-top: 1px solid var(--line); }
    .capability { padding: 17px 0; border-bottom: 1px solid var(--line); }
    .capability strong { display: block; margin-bottom: 4px; font-size: 14px; }
    .capability span { color: var(--muted); font-size: 12px; }
    .services-section { background: #eaf1e9; border-block: 1px solid #dce7dc; }
    .service-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 12px; }
    .service-item { min-height: 170px; padding: 19px; border: 1px solid #d5e0d6; border-radius: 5px; background: rgba(255,255,255,.78); transition: transform .2s, box-shadow .2s, border-color .2s; }
    .service-item:hover { transform: translateY(-4px); border-color: #9ebda8; box-shadow: 0 12px 24px rgba(32,73,54,.08); }
    .service-item .index { color: #718578; font-size: 11px; font-weight: 800; }
    .service-item h3 { margin: 10px 0 7px; font-size: 16px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 12px; }
    .tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 25px; }
    .tag { padding: 6px 10px; border: 1px solid #ccd9cf; border-radius: 3px; color: #44554d; background: rgba(255,255,255,.64); font-size: 12px; }
    .workflow { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 0; counter-reset: steps; border-top: 1px solid var(--line); }
    .workflow-step { position: relative; padding: 25px 24px 8px 0; counter-increment: steps; }
    .workflow-step::before { content: "0" counter(steps); display: block; margin-bottom: 15px; color: var(--green); font-size: 13px; font-weight: 800; }
    .workflow-step:not(:last-child)::after { content: ""; position: absolute; top: 33px; left: 38px; right: 18px; height: 1px; background: #c9d8ce; }
    .workflow-step h3 { margin: 0 0 7px; font-size: 15px; }
    .workflow-step p { margin: 0; color: var(--muted); font-size: 12px; }
    .showcase-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 18px; align-items: start; }
    .showcase-main { overflow: hidden; border-radius: 6px; background: #e7efe9; }
    .showcase-main .media-frame { aspect-ratio: 16 / 8; }
    .showcase-side { display: grid; gap: 16px; }
    .showcase-card { overflow: hidden; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
    .media-frame { overflow: hidden; background: #edf1eb; }
    .media-frame img { display: block; width: 100%; height: 100%; object-fit: cover; }
    .showcase-copy { padding: 17px 19px; }
    .showcase-copy h3 { margin: 0 0 5px; font-size: 16px; }
    .showcase-copy p { margin: 0; color: var(--muted); font-size: 12px; }
    .showcase-side .showcase-card { display: grid; grid-template-columns: minmax(110px, .72fr) 1fr; align-items: stretch; }
    .showcase-side .media-frame { min-height: 130px; }
    .compare-section { background: #203b32; color: #f5f8f4; }
    .compare-section .kicker { color: var(--lime); }
    .compare-section .section-head p { color: #c8d6ce; }
    .score-block { display: flex; align-items: center; gap: 19px; margin: 23px 0 28px; }
    .score-number { color: var(--lime); font-size: 48px; font-weight: 800; line-height: 1; }
    .score-meta strong { display: block; font-size: 15px; }
    .score-meta span { color: #c8d6ce; font-size: 12px; }
    .stars { color: var(--lime); letter-spacing: 0; }
    .table-wrap { overflow-x: auto; border: 1px solid rgba(255,255,255,.18); border-radius: 5px; }
    .compare-table { width: 100%; min-width: 680px; border-collapse: collapse; text-align: left; }
    .compare-table th, .compare-table td { padding: 13px 16px; border-bottom: 1px solid rgba(255,255,255,.14); vertical-align: top; font-size: 13px; }
    .compare-table th { color: #d5f28a; background: rgba(255,255,255,.06); font-size: 12px; }
    .compare-table tr:last-child td { border-bottom: 0; }
    .compare-table td:first-child { width: 22%; font-weight: 700; }
    .compare-table td:nth-child(2) { width: 43%; color: #f2f6f0; }
    .compare-table td:last-child { color: #c8d6ce; }
    .compare-note { margin: 12px 0 0; color: #c8d6ce; font-size: 11px; }

    .feedback-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; }
    .feedback { padding: 19px; border-top: 2px solid #74a986; background: #fff; }
    .feedback p { margin: 0 0 16px; color: #45564f; font-size: 13px; }
    .feedback strong { display: block; font-size: 12px; }
    .feedback span { color: #77837e; font-size: 11px; }
    .resources-section { background: #edf2f7; border-block: 1px solid #dce5ed; }
    .resource-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 44px; align-items: start; }
    .resource-copy h2 { max-width: 360px; margin: 8px 0 13px; font-size: 33px; line-height: 1.2; }
    .resource-copy p { margin: 0; color: var(--muted); font-size: 14px; }
    .resource-links { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 0 23px; }
    .resource-links a { display: flex; justify-content: space-between; gap: 12px; padding: 14px 0; border-bottom: 1px solid #d3dfe7; color: var(--ink); font-size: 13px; text-decoration: none; }
    .resource-links a::after { content: "↗"; color: var(--green); }
    .resource-links a:hover { color: var(--green); }
    .contact-section { padding-bottom: 70px; }
    .contact-layout { display: grid; grid-template-columns: .83fr 1.17fr; gap: 45px; align-items: start; }
    .contact-info { padding: 25px; color: #f2f7f1; background: #176b50; border-radius: 6px; }
    .contact-info h2 { margin: 7px 0 10px; font-size: 30px; line-height: 1.2; }
    .contact-info > p { margin: 0 0 21px; color: #d6e7dc; font-size: 13px; }
    .contact-line { padding: 11px 0; border-top: 1px solid rgba(255,255,255,.2); font-size: 13px; }
    .contact-line span { display: block; color: #c7dfd1; font-size: 11px; }
    .qr-wrap { width: 142px; margin-top: 17px; padding: 8px; border-radius: 4px; background: #fff; }
    .qr-wrap img { display: block; width: 100%; height: auto; }
    .contact-form { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 15px; }
    .field { display: grid; gap: 6px; }
    .field-full { grid-column: 1 / -1; }
    .field label { color: #43534c; font-size: 12px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-width: 0; padding: 11px 12px; border: 1px solid #ccd8d0; border-radius: 4px; color: var(--ink); background: #fff; outline: 0; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: #4b9270; box-shadow: 0 0 0 3px rgba(75,146,112,.12); }
    .field textarea { min-height: 120px; resize: vertical; }
    .form-bottom { display: flex; align-items: center; gap: 14px; grid-column: 1 / -1; }
    .form-bottom small { color: var(--muted); font-size: 11px; }
    .faq-section { padding-top: 16px; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 17px 2px; cursor: pointer; list-style: none; font-size: 14px; font-weight: 700; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; color: var(--green); font-size: 22px; font-weight: 400; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { max-width: 850px; margin: -3px 0 17px; color: var(--muted); font-size: 13px; }
    .join-band { display: flex; justify-content: space-between; align-items: center; gap: 24px; margin-top: 53px; padding: 25px 28px; border-radius: 5px; background: #d6f36b; }
    .join-band h2 { margin: 0 0 4px; font-size: 21px; }
    .join-band p { margin: 0; color: #40523f; font-size: 12px; }
    .join-band .button { color: #fff; background: #1e4436; }
    .site-footer { padding: 24px 0; border-top: 1px solid var(--line); background: #edf1ed; color: #33433d; }
    .footer-row { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
    .footer-brand { font-size: 14px; font-weight: 800; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 10px 18px; }
    .footer-links a { color: #42544b; font-size: 11px; text-decoration: none; }
    .footer-meta { margin-top: 8px; color: #63716a; font-size: 10px; }
    .floating-tools { position: fixed; z-index: 15; right: 18px; bottom: 20px; display: grid; gap: 8px; }
    .floating-tools a, .floating-tools button { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid #cbd8ce; border-radius: 5px; color: var(--green); background: #fff; box-shadow: 0 5px 18px rgba(34,56,44,.12); text-decoration: none; cursor: pointer; }
    .floating-tools svg { width: 19px; height: 19px; }
    .reveal { opacity: 0; transform: translateY(15px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }

    @media (max-width: 1000px) {
      .nav-row { gap: 12px; }
      .nav-links a { padding-inline: 7px; font-size: 12px; }
      .nav-cta { padding-inline: 11px; }
      .service-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
      .hero-inner { gap: 30px; }
    }
    @media (max-width: 760px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .nav-row { min-height: 66px; }
      .brand img { width: 37px; }
      .brand span { font-size: 16px; }
      .menu-toggle { display: grid; place-items: center; margin-left: auto; }
      .nav-cta { display: none; }
      .nav-links { display: none; position: absolute; top: 65px; left: 0; right: 0; align-items: stretch; padding: 8px 16px 14px; border-bottom: 1px solid var(--line); background: var(--paper); }
      .nav-links.is-open { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); }
      .nav-links a { padding: 10px; font-size: 13px; }
      .hero { padding: 57px 0 49px; }
      .hero-inner { grid-template-columns: 1fr; gap: 27px; }
      h1 { max-width: 540px; font-size: 46px; }
      .hero-copy { font-size: 15px; }
      .hero-panel { max-width: 520px; }
      .metric-strip { grid-template-columns: repeat(2,1fr); margin-top: 30px; }
      .metric { padding: 14px 10px 0 0; }
      .section { padding: 55px 0; }
      .section-head { display: block; margin-bottom: 23px; }
      .section-head h2 { font-size: 29px; }
      .section-head p { margin-top: 10px; }
      .intro-band, .resource-layout, .contact-layout { grid-template-columns: 1fr; gap: 26px; }
      .intro-title { position: static; }
      .intro-title h2, .resource-copy h2 { font-size: 30px; }
      .service-grid { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 9px; }
      .service-item { min-height: 158px; padding: 15px; }
      .workflow { grid-template-columns: repeat(2,minmax(0,1fr)); }
      .workflow-step { padding-bottom: 19px; }
      .workflow-step:nth-child(2)::after { display: none; }
      .showcase-grid { grid-template-columns: 1fr; }
      .showcase-side { grid-template-columns: 1fr; }
      .showcase-side .showcase-card { grid-template-columns: minmax(115px,.7fr) 1fr; }
      .feedback-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
      .contact-info { padding: 21px; }
      .join-band { align-items: flex-start; flex-direction: column; margin-top: 36px; }
      .footer-row { align-items: flex-start; flex-direction: column; }
    }
    @media (max-width: 480px) {
      .container { width: calc(100% - 28px); }
      h1 { font-size: 40px; }
      .hero-actions { display: grid; grid-template-columns: 1fr 1fr; }
      .hero-actions .button { padding-inline: 10px; font-size: 13px; }
      .model-grid { grid-template-columns: repeat(3,1fr); }
      .capability-list, .service-grid, .feedback-grid, .resource-links { grid-template-columns: 1fr; }
      .service-item { min-height: auto; }
      .workflow { grid-template-columns: 1fr; }
      .workflow-step { padding: 16px 0; border-bottom: 1px solid var(--line); }
      .workflow-step::after { display: none; }
      .showcase-side .showcase-card { grid-template-columns: 1fr; }
      .showcase-side .media-frame { aspect-ratio: 16 / 9; }
      .contact-form { grid-template-columns: 1fr; }
      .field-full, .form-bottom { grid-column: auto; }
      .form-bottom { align-items: flex-start; flex-direction: column; }
      .score-number { font-size: 42px; }
      .floating-tools { right: 10px; bottom: 12px; }
      .floating-tools a, .floating-tools button { width: 40px; height: 40px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }