:root {
      color-scheme: light;
      --ink: #202638;
      --muted: #626b7b;
      --paper: #fffaf4;
      --white: #fff;
      --line: #ece7e1;
      --coral: #f16f5b;
      --yellow: #ffd66b;
      --mint: #b8e7d8;
      --blue: #bedcff;
      --lilac: #d8ccff;
      --green: #286c58;
      --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", "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
    }
    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(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,250,244,.95); border-bottom: 1px solid rgba(32,38,56,.08); 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; flex: 0 0 auto; font-weight: 800; font-size: 18px; }
    .ai-page-logo { width: 40px; height: 40px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; color: #4e5665; font-size: 13px; }
    .nav-links a { padding: 9px 10px; border-radius: 8px; transition: background .2s, color .2s; }
    .nav-links a:hover { background: #fff0d5; color: #aa4e3d; }
    .nav-cta, .button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 19px; border: 0; border-radius: 8px; background: var(--ink); color: #fff; font-weight: 700; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s; }
    .nav-cta:hover, .button:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(32,38,56,.16); }
    .button-coral { background: var(--coral); color: #fff; }
    .button-light { background: #fff; color: var(--ink); border: 1px solid var(--line); }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink); cursor: pointer; }
    .hero { overflow: hidden; position: relative; padding: 78px 0 58px; background: linear-gradient(135deg,#fff4d6 0%,#fffaf4 48%,#e8f8f2 100%); }
    .hero:after { content: ""; position: absolute; width: 250px; height: 250px; right: 6%; top: 34px; border: 1px solid rgba(241,111,91,.22); border-radius: 50%; box-shadow: 0 0 0 28px rgba(255,214,107,.13), 0 0 0 58px rgba(184,231,216,.18); pointer-events: none; }
    .hero-inner { position: relative; z-index: 1; max-width: 800px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 8px; color: #a64d3f; font-weight: 800; font-size: 13px; letter-spacing: .04em; }
    .eyebrow:before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--coral); }
    h1 { max-width: 760px; margin: 15px 0 17px; font-size: clamp(38px, 6vw, 66px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy { max-width: 690px; margin: 0; color: #525c6e; font-size: 18px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .hero-note { margin-top: 18px; color: #626b7b; font-size: 13px; }
    .hero-chips { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 29px; }
    .hero-chips span { padding: 6px 12px; border: 1px solid rgba(32,38,56,.12); border-radius: 999px; background: rgba(255,255,255,.72); color: #4d5665; font-size: 13px; }
    .metrics { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; margin-top: 48px; border-top: 1px solid rgba(32,38,56,.12); }
    .metric { padding: 20px 18px 0 0; }
    .metric strong { display: block; font-size: 20px; line-height: 1.35; }
    .metric span { color: var(--muted); font-size: 13px; }
    section { padding: 76px 0; scroll-margin-top: 84px; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
    .section-head h2 { margin: 7px 0 0; font-size: clamp(27px,4vw,39px); line-height: 1.2; letter-spacing: 0; }
    .section-head p { max-width: 550px; margin: 0; color: var(--muted); }
    .intro-band { background: #fff; }
    .intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 54px; align-items: start; }
    .intro-copy { color: #525c6e; }
    .intro-copy p { margin: 0 0 14px; }
    .intro-points { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; border-top: 1px solid var(--line); }
    .intro-point { padding: 15px 0; border-bottom: 1px solid var(--line); }
    .intro-point strong { display: block; font-size: 15px; }
    .intro-point span { color: var(--muted); font-size: 13px; }
    .service-section { background: #fff7ea; }
    .service-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
    .service-item { min-height: 156px; padding: 21px; border: 1px solid rgba(32,38,56,.08); border-radius: 8px; background: #fff; transition: transform .22s, box-shadow .22s; }
    .service-item:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(46,48,61,.08); }
    .service-item h3 { margin: 0 0 8px; font-size: 17px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-tag { display: inline-block; margin-bottom: 9px; color: #a64d3f; font-size: 12px; font-weight: 800; }
    .workflow { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; counter-reset: step; }
    .workflow article { position: relative; padding: 9px 22px 10px 0; }
    .workflow article:before { counter-increment: step; content: "0" counter(step); display: block; margin-bottom: 18px; color: var(--coral); font-weight: 800; font-size: 28px; }
    .workflow article:not(:last-child):after { content: ""; position: absolute; top: 26px; left: 55px; right: 18px; border-top: 1px dashed #d9cfc3; }
    .workflow h3 { margin: 0 0 6px; font-size: 16px; }
    .workflow p { margin: 0; color: var(--muted); font-size: 14px; }
    .industry { background: #eaf7f2; }
    .industry-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; }
    .industry-item { padding: 17px; border-left: 3px solid #6bb89b; background: rgba(255,255,255,.78); }
    .industry-item strong { display: block; margin-bottom: 4px; }
    .industry-item span { color: var(--muted); font-size: 13px; }
    .network-row { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 25px; }
    .network-row span { padding: 8px 12px; border: 1px solid #e7e2da; border-radius: 6px; background: #fff; color: #4e5665; font-size: 13px; }
    .media-strip { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
    .media-card { overflow: hidden; border-radius: 8px; background: #fff; border: 1px solid var(--line); }
    .media-card img { display: block; width: 100%; aspect-ratio: 16/9; object-fit: cover; }
    .media-card figcaption { padding: 14px 17px; font-weight: 700; }
    .case-square { width: min(100%, 360px); overflow: hidden; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
    .case-square img { display: block; width: 100%; aspect-ratio: 1; object-fit: cover; }
    .case-square p { margin: 0; padding: 14px 17px; color: var(--muted); font-size: 14px; }
    .case-layout { display: grid; grid-template-columns: 1.6fr .8fr; gap: 24px; align-items: start; }
    .case-layout .media-strip { align-items: start; }
    .review-section { background: #fff; }
    .review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
    .review { padding: 20px; border-top: 3px solid var(--yellow); background: #fffaf2; }
    .review p { margin: 0 0 16px; color: #4e5665; font-size: 14px; }
    .review strong { display: block; font-size: 13px; }
    .review span { color: var(--muted); font-size: 12px; }
    .comparison { background: #fff3ed; }
    .score-panel { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 22px; padding: 22px 25px; border-radius: 8px; background: #fff; }
    .score-panel strong { display: block; color: #b34b3b; font-size: 30px; line-height: 1.2; }
    .score-panel span { color: var(--muted); font-size: 13px; }
    .stars { color: #d08a00 !important; font-size: 20px !important; letter-spacing: 2px; }
    .table-wrap { overflow-x: auto; border: 1px solid #e9dfd8; border-radius: 8px; background: #fff; }
    table { width: 100%; min-width: 690px; border-collapse: collapse; }
    th, td { padding: 14px 16px; border-bottom: 1px solid #eee8e2; text-align: left; vertical-align: top; }
    th { background: #fff8ed; font-size: 13px; }
    td { color: #4e5665; font-size: 14px; }
    tr:last-child td { border-bottom: 0; }
    .yes { color: #286c58; font-weight: 700; }
    .token-band { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 24px; padding: 25px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .token-band h3 { margin: 0 0 5px; font-size: 19px; }
    .token-band p { margin: 0; color: var(--muted); font-size: 14px; }
    .match-section { background: #f0edff; }
    .match-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 42px; align-items: start; }
    .match-copy p { color: var(--muted); }
    form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field-wide { grid-column: 1 / -1; }
    label { color: #3d4658; font-size: 13px; font-weight: 700; }
    input, select, textarea { width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid #dcd8e8; border-radius: 6px; background: #fff; color: var(--ink); }
    textarea { min-height: 110px; resize: vertical; }
    input:focus, select:focus, textarea:focus { outline: 3px solid rgba(118,96,204,.16); border-color: #8978d6; }
    .form-note { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: 12px; }
    .faq-list { max-width: 900px; }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 17px 38px 17px 0; cursor: pointer; list-style: none; font-weight: 700; }
    summary::-webkit-details-marker { display: none; }
    summary:after { content: "+"; position: absolute; right: 4px; top: 12px; color: var(--coral); font-size: 23px; font-weight: 400; }
    details[open] summary:after { content: "−"; }
    details p { margin: -2px 0 18px; color: var(--muted); font-size: 14px; }
    .article-links { display: grid; grid-template-columns: repeat(5,1fr); gap: 10px; }
    .article-links a { padding: 14px; border: 1px solid var(--line); border-radius: 6px; background: #fff; color: #4e5665; font-size: 13px; transition: border-color .2s, transform .2s; }
    .article-links a:hover { transform: translateY(-2px); border-color: var(--coral); }
    .article-links span { display: block; color: #a64d3f; font-weight: 800; }
    .join-band { padding: 30px; border-radius: 8px; background: #ffdf87; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .join-band h2 { margin: 0 0 5px; font-size: 25px; }
    .join-band p { margin: 0; color: #52533f; }
    .link-cloud { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 24px; }
    .link-cloud a { color: #4e5665; font-size: 13px; text-decoration: underline; text-decoration-color: #c6c0b8; text-underline-offset: 4px; }
    .site-footer { padding: 30px 0; background: #202638; color: #fff; }
    .footer-row { display: flex; justify-content: space-between; align-items: center; gap: 22px; }
    .footer-row p { margin: 0; color: #e1e4eb; font-size: 13px; }
    .footer-contact { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 13px; color: #fff; }
    .footer-contact a { text-decoration: underline; text-underline-offset: 3px; }
    .floating-contact { position: fixed; right: 18px; bottom: 20px; z-index: 15; display: flex; flex-direction: column; gap: 8px; }
    .floating-contact a, .top-button { display: inline-flex; align-items: center; justify-content: center; min-width: 48px; min-height: 44px; padding: 0 12px; border: 0; border-radius: 7px; background: var(--ink); color: #fff; box-shadow: 0 5px 18px rgba(32,38,56,.18); font-size: 13px; cursor: pointer; }
    .top-button { display: none; }
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    @media (prefers-reduced-motion: reduce) { *, *:before, *:after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; } .reveal { opacity: 1; transform: none; } }
    @media (max-width: 950px) {
      .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
      .nav-row { position: relative; }
      .nav-links { display: none; position: absolute; top: calc(100% - 1px); left: 0; right: 0; padding: 12px; border: 1px solid var(--line); border-radius: 0 0 8px 8px; background: #fffaf4; box-shadow: 0 12px 20px rgba(32,38,56,.08); }
      .nav-links.open { display: grid; grid-template-columns: repeat(3,1fr); }
      .nav-links a { text-align: center; }
      .nav-cta { display: none; }
      .service-grid { grid-template-columns: repeat(2,1fr); }
      .industry-grid { grid-template-columns: repeat(2,1fr); }
      .article-links { grid-template-columns: repeat(3,1fr); }
    }
    @media (max-width: 650px) {
      .container { width: min(var(--container), calc(100% - 30px)); }
      .hero { padding: 58px 0 38px; }
      .hero:after { width: 130px; height: 130px; right: -35px; top: 25px; opacity: .7; }
      .hero-copy { font-size: 16px; }
      .metrics { grid-template-columns: repeat(2,1fr); row-gap: 14px; }
      .metric { padding-top: 14px; }
      section { padding: 55px 0; }
      .section-head { align-items: start; flex-direction: column; gap: 10px; }
      .intro-grid, .match-layout, .case-layout { grid-template-columns: 1fr; gap: 25px; }
      .intro-points { grid-template-columns: 1fr 1fr; gap: 0 14px; }
      .service-grid { grid-template-columns: 1fr; }
      .service-item { min-height: auto; }
      .workflow { grid-template-columns: 1fr 1fr; gap: 20px 10px; }
      .workflow article:not(:last-child):after { display: none; }
      .industry-grid { grid-template-columns: 1fr 1fr; }
      .media-strip { grid-template-columns: 1fr; }
      .review-grid { grid-template-columns: 1fr; }
      .score-panel { align-items: flex-start; flex-direction: column; }
      .token-band { grid-template-columns: 1fr; }
      form { grid-template-columns: 1fr; }
      .field-wide, .form-note { grid-column: auto; }
      .article-links { grid-template-columns: 1fr 1fr; }
      .join-band, .footer-row { align-items: flex-start; flex-direction: column; }
      .nav-links.open { grid-template-columns: repeat(2,1fr); }
    }