:root {
      color-scheme: light;
      --ink: #192334;
      --muted: #667286;
      --line: #e4e8f1;
      --paper: #f7f8fc;
      --white: #fff;
      --violet: #7256ed;
      --cyan: #24c7c9;
      --lime: #cbef67;
      --deep: #20233d;
      --container: 1180px;
      --radius: 22px;
      font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 92px; }
    body {
      margin: 0;
      color: var(--ink);
      background:
        radial-gradient(ellipse at 86% 6%, rgba(203,239,103,.15), transparent 28rem),
        radial-gradient(ellipse at 8% 25%, rgba(114,86,237,.07), transparent 34rem),
        var(--paper);
      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%; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header { position: sticky; top: 0; z-index: 20; background: rgba(247,248,252,.92); border-bottom: 1px solid rgba(228,232,241,.85); backdrop-filter: blur(14px); }
    .nav-bar { min-height: 76px; 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; letter-spacing: -.03em; }
    .ai-page-logo { display: block; width: 42px; height: 42px; object-fit: contain; }
    .brand-text { font-size: 17px; line-height: 1.2; }
    .brand-text small { display: block; margin-top: 4px; color: var(--muted); font-size: 10px; font-weight: 600; letter-spacing: .14em; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; min-width: 0; }
    .nav-links a { padding: 10px 11px; color: #4f5a6b; font-size: 13px; white-space: nowrap; transition: color .2s ease; }
    .nav-links a:hover { color: var(--violet); }
    .nav-links .nav-cta { margin-left: 12px; padding: 10px 17px; border-radius: 999px; background: var(--deep); color: #fff; }
    .nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 13px; background: #fff; color: var(--ink); cursor: pointer; }
    .nav-toggle svg { width: 20px; height: 20px; vertical-align: middle; }
    .hero { position: relative; overflow: hidden; padding: 76px 0 70px; }
    .hero::before { position: absolute; inset: 0; content: ""; pointer-events: none; background-image: linear-gradient(rgba(114,86,237,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(114,86,237,.045) 1px, transparent 1px); background-size: 42px 42px; mask-image: linear-gradient(to bottom, #000, transparent 92%); }
    .hero-inner { position: relative; display: grid; grid-template-columns: minmax(0, 1.22fr) minmax(280px, .78fr); align-items: center; gap: 52px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: #6049d4; font-size: 12px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
    .eyebrow::before { width: 22px; height: 2px; content: ""; background: var(--cyan); }
    h1, h2, h3, p { margin-top: 0; }
    h1 { max-width: 720px; margin: 18px 0 20px; font-size: clamp(40px, 6vw, 70px); line-height: 1.12; letter-spacing: -.055em; }
    .hero h1 em { color: var(--violet); font-style: normal; }
    .hero-copy { max-width: 620px; margin-bottom: 28px; color: #586477; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; padding: 12px 20px; border: 1px solid transparent; border-radius: 14px; font-weight: 750; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
    .button:hover { transform: translateY(-2px); }
    .button-primary { color: #fff; background: var(--violet); box-shadow: 0 10px 26px rgba(114,86,237,.23); }
    .button-primary:hover { background: #6047dc; box-shadow: 0 14px 30px rgba(114,86,237,.3); }
    .button-secondary { color: var(--ink); background: #fff; border-color: var(--line); }
    .button-secondary:hover { box-shadow: 0 8px 22px rgba(34,46,77,.09); }
    .hero-note { margin: 17px 0 0; color: #788295; font-size: 12px; }
    .hero-visual { position: relative; min-height: 340px; display: grid; place-items: center; }
    .orb { position: absolute; width: min(310px, 72vw); aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle at 37% 32%, #f4ffb6 0 5%, #cbef67 6% 20%, #93d9b1 36%, #9b84f3 68%, #7359e8 100%); filter: saturate(1.06); box-shadow: 0 0 0 18px rgba(114,86,237,.055), 0 0 0 42px rgba(36,199,201,.04), 0 30px 75px rgba(81,72,178,.22); animation: float 6s ease-in-out infinite; }
    .orb::before, .orb::after { position: absolute; content: ""; border: 1px solid rgba(82,69,171,.17); border-radius: 50%; inset: -28px; transform: rotate(-24deg) scaleY(.4); }
    .orb::after { inset: -52px; transform: rotate(27deg) scaleY(.3); }
    .orbit-label { position: absolute; z-index: 1; padding: 11px 15px; border: 1px solid rgba(255,255,255,.8); border-radius: 14px; background: rgba(255,255,255,.86); box-shadow: 0 10px 30px rgba(41,46,78,.1); color: #374257; font-size: 12px; font-weight: 750; }
    .orbit-label strong { display: block; color: var(--violet); font-size: 16px; }
    .label-one { top: 14%; left: 0; }
    .label-two { right: -2%; top: 27%; }
    .label-three { bottom: 11%; left: 10%; }
    .hero-spark { position: absolute; top: 6%; right: 19%; color: #82b830; font-size: 24px; animation: twinkle 3s ease-in-out infinite; }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; padding: 18px; border: 1px solid var(--line); border-radius: 20px; background: rgba(255,255,255,.8); box-shadow: 0 15px 45px rgba(34,46,77,.04); }
    .metric { padding: 9px 16px; border-right: 1px solid var(--line); }
    .metric:last-child { border-right: 0; }
    .metric strong { display: block; color: var(--deep); font-size: 19px; letter-spacing: -.03em; }
    .metric span { display: block; margin-top: 3px; color: var(--muted); font-size: 12px; }
    .section { padding: 78px 0; }
    .section-top { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
    .section-top h2 { max-width: 720px; margin: 10px 0 0; font-size: clamp(28px, 4vw, 42px); line-height: 1.2; letter-spacing: -.04em; }
    .section-top p { max-width: 430px; margin: 0; color: var(--muted); font-size: 14px; }
    .intro-band { display: grid; grid-template-columns: .8fr 1.2fr; gap: 30px; align-items: center; padding: 34px; border-radius: var(--radius); color: #fff; background: var(--deep); overflow: hidden; }
    .intro-band h2 { margin-bottom: 12px; font-size: 32px; line-height: 1.25; }
    .intro-band p { margin: 0; color: #d0d3e1; }
    .intro-copy { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .intro-point { padding: 16px; border: 1px solid rgba(255,255,255,.14); border-radius: 15px; background: rgba(255,255,255,.06); }
    .intro-point strong { display: block; margin-bottom: 4px; color: #d6f58a; font-size: 14px; }
    .intro-point span { color: #d0d3e1; font-size: 12px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
    .service-card { min-height: 190px; padding: 22px; border: 1px solid var(--line); border-radius: 19px; background: var(--white); transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease; }
    .service-card:hover { transform: translateY(-4px); border-color: #d2cafa; box-shadow: 0 16px 35px rgba(47,48,84,.08); }
    .service-icon { width: 39px; height: 39px; display: grid; place-items: center; margin-bottom: 15px; border-radius: 12px; background: #f0edff; color: var(--violet); font-size: 17px; font-weight: 800; }
    .service-card h3 { margin-bottom: 8px; font-size: 17px; }
    .service-card p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-card .mini-tags { margin-top: 13px; color: #6451c7; font-size: 11px; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden; }
    .step { position: relative; padding: 25px 22px; border-right: 1px solid var(--line); }
    .step:last-child { border-right: 0; }
    .step-number { display: block; margin-bottom: 21px; color: #8775e9; font-size: 12px; font-weight: 850; letter-spacing: .1em; }
    .step h3 { margin-bottom: 7px; font-size: 16px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .solution-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 28px; align-items: start; }
    .solution-aside { padding: 27px; border-radius: var(--radius); background: #e9f8f4; }
    .solution-aside h3 { margin-bottom: 10px; font-size: 21px; }
    .solution-aside p { color: #536b68; font-size: 14px; }
    .solution-aside a { display: inline-flex; color: #176e66; font-weight: 750; }
    .solution-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .solution-item { padding: 19px; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
    .solution-item strong { display: block; margin-bottom: 5px; font-size: 15px; }
    .solution-item span { color: var(--muted); font-size: 12px; }
    .model-strip { padding: 24px; border: 1px solid var(--line); border-radius: 19px; background: #fff; }
    .model-strip h3 { margin-bottom: 15px; font-size: 17px; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
    .tag-cloud span { padding: 7px 11px; border: 1px solid #e8e6f7; border-radius: 999px; background: #faf9ff; color: #4f4b74; font-size: 12px; }
    .token-panel { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 22px; padding: 27px 30px; border: 1px solid #dcd6fa; border-radius: 20px; background: linear-gradient(110deg, #f2efff, #fff 75%); }
    .token-panel h3 { margin-bottom: 6px; font-size: 20px; }
    .token-panel p { margin: 0; color: var(--muted); font-size: 13px; }
    .token-panel .button { white-space: nowrap; }
    .comparison-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
    .comparison { width: 100%; min-width: 720px; border-collapse: collapse; text-align: left; }
    .comparison th, .comparison td { padding: 15px 18px; border-bottom: 1px solid var(--line); font-size: 13px; vertical-align: top; }
    .comparison th { color: #4f5a6b; background: #f5f6fa; font-size: 12px; }
    .comparison tr:last-child td { border-bottom: 0; }
    .comparison td:first-child { width: 22%; font-weight: 750; }
    .comparison .highlight { color: #5944ca; font-weight: 700; }
    .rating-note { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin: 0 0 17px; padding: 16px 19px; border-radius: 15px; background: #f0edff; }
    .rating-note strong { color: #5039c5; font-size: 21px; }
    .rating-note span { color: #5c6476; font-size: 13px; }
    .case-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
    .case-card { overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: #fff; transition: transform .2s ease, box-shadow .2s ease; }
    .case-card:hover { transform: translateY(-3px); box-shadow: 0 15px 32px rgba(34,46,77,.09); }
    .case-image { aspect-ratio: 16 / 9; overflow: hidden; background: #ebeaf4; }
    .case-image img { display: block; width: 100%; height: 100%; object-fit: cover; }
    .case-image.square { aspect-ratio: 1 / 1; }
    .case-body { padding: 17px; }
    .case-body small { color: #6955d7; font-weight: 750; }
    .case-body h3 { margin: 6px 0; font-size: 16px; }
    .case-body p { margin: 0; color: var(--muted); font-size: 12px; }
    .quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
    .quote-card { padding: 20px; border: 1px solid var(--line); border-radius: 17px; background: #fff; }
    .quote-card p { min-height: 68px; margin-bottom: 16px; color: #465165; font-size: 13px; }
    .quote-card strong { display: block; font-size: 12px; }
    .quote-card span { color: var(--muted); font-size: 11px; }
    .article-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 11px; }
    .article-link { display: flex; min-height: 116px; flex-direction: column; justify-content: space-between; padding: 16px; border: 1px solid var(--line); border-radius: 15px; background: #fff; }
    .article-link strong { font-size: 13px; line-height: 1.5; }
    .article-link span { color: #6d58d5; font-size: 11px; }
    .faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
    .faq-list details { padding: 17px 19px; border: 1px solid var(--line); border-radius: 15px; background: #fff; }
    .faq-list summary { position: relative; padding-right: 24px; cursor: pointer; font-size: 14px; font-weight: 750; list-style: none; }
    .faq-list summary::-webkit-details-marker { display: none; }
    .faq-list summary::after { position: absolute; top: 0; right: 0; content: "+"; color: var(--violet); font-size: 20px; line-height: 1; transition: transform .2s ease; }
    .faq-list details[open] summary::after { transform: rotate(45deg); }
    .faq-list details p { margin: 12px 0 0; color: var(--muted); font-size: 13px; }
    .join-band { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 22px; padding: 28px 30px; border: 1px solid rgba(203,239,103,.55); border-radius: 20px; background: linear-gradient(115deg, #f3f9df, #fff); }
    .join-band h2 { margin: 0 0 6px; font-size: 23px; }
    .join-band p { margin: 0; color: var(--muted); font-size: 13px; }
    .contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 25px; align-items: start; }
    .contact-info { padding: 25px; border-radius: 20px; background: var(--deep); color: #fff; }
    .contact-info h3 { margin-bottom: 8px; font-size: 21px; }
    .contact-info > p { color: #d0d3e1; font-size: 13px; }
    .contact-list { display: grid; gap: 9px; margin-top: 20px; }
    .contact-list a, .contact-list span { color: #f2f3fa; font-size: 13px; overflow-wrap: anywhere; }
    .contact-list strong { display: inline-block; min-width: 84px; color: #c9f071; }
    .qr-wrap { width: 138px; margin-top: 18px; padding: 8px; border-radius: 12px; background: #fff; }
    .qr-wrap img { display: block; width: 100%; height: auto; border-radius: 5px; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 25px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { color: #455064; font-size: 12px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; padding: 11px 12px; border: 1px solid #dfe4ed; border-radius: 11px; outline: none; background: #fbfcfe; color: var(--ink); }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: #9888ed; box-shadow: 0 0 0 3px rgba(114,86,237,.11); }
    .field textarea { min-height: 112px; resize: vertical; }
    .contact-form button { cursor: pointer; }
    .site-footer { margin-top: 12px; padding: 28px 0 24px; border-top: 1px solid var(--line); background: #f0f2f8; color: #263146; }
    .footer-top { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .footer-top p { max-width: 530px; margin: 0; color: #586477; font-size: 12px; }
    .footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 17px; }
    .footer-links a { color: #465165; font-size: 12px; }
    .footer-bottom { margin-top: 20px; padding-top: 14px; border-top: 1px solid #dfe3ec; color: #6b7484; font-size: 11px; }
    .float-contact { position: fixed; right: 18px; bottom: 22px; z-index: 15; display: inline-flex; align-items: center; gap: 8px; padding: 12px 16px; border-radius: 999px; background: var(--deep); color: #fff; box-shadow: 0 9px 25px rgba(25,35,52,.2); font-size: 12px; font-weight: 750; transition: transform .2s ease; }
    .float-contact:hover { transform: translateY(-3px); }
    .float-contact span { width: 8px; height: 8px; border-radius: 50%; background: var(--lime); }
    .reveal { opacity: 0; transform: translateY(16px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @keyframes float { 0%,100% { transform: translateY(0) rotate(-3deg); } 50% { transform: translateY(-10px) rotate(2deg); } }
    @keyframes twinkle { 0%,100% { opacity: .45; transform: scale(.85); } 50% { opacity: 1; transform: scale(1.12); } }
    @media (max-width: 1040px) {
      .nav-bar { gap: 12px; }
      .nav-links a { padding-inline: 7px; font-size: 12px; }
      .nav-links .nav-cta { margin-left: 6px; padding-inline: 12px; }
      .hero-inner { gap: 24px; }
    }
    @media (max-width: 820px) {
      .nav-bar { min-height: 68px; }
      .nav-toggle { display: block; }
      .nav-links { position: absolute; top: calc(100% + 1px); left: 0; right: 0; display: none; align-items: stretch; flex-direction: column; padding: 10px 20px 18px; border-bottom: 1px solid var(--line); background: rgba(247,248,252,.98); box-shadow: 0 14px 24px rgba(34,46,77,.08); }
      .nav-links.is-open { display: flex; }
      .nav-links a { padding: 11px 7px; font-size: 14px; }
      .nav-links .nav-cta { margin: 7px 0 0; text-align: center; }
      .hero { padding: 54px 0 48px; }
      .hero-inner { grid-template-columns: 1fr; }
      .hero-visual { min-height: 300px; }
      .orb { width: 220px; }
      .label-one { left: 11%; }
      .label-two { right: 10%; }
      .label-three { left: 16%; }
      .section { padding: 60px 0; }
      .intro-band, .solution-layout, .contact-grid { grid-template-columns: 1fr; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .case-grid { grid-template-columns: repeat(2, 1fr); }
      .article-list { grid-template-columns: repeat(3, 1fr); }
      .quote-grid { grid-template-columns: repeat(2, 1fr); }
      .quote-card p { min-height: auto; }
    }
    @media (max-width: 560px) {
      .container { width: min(var(--container), calc(100% - 30px)); }
      .brand-text { font-size: 15px; }
      .hero h1 { font-size: 42px; }
      .hero-copy { font-size: 15px; }
      .hero-visual { min-height: 265px; }
      .orb { width: 185px; }
      .orbit-label { padding: 9px 11px; font-size: 10px; }
      .orbit-label strong { font-size: 14px; }
      .metrics { grid-template-columns: 1fr 1fr; padding: 12px; }
      .metric { border-right: 0; border-bottom: 1px solid var(--line); padding: 10px; }
      .metric:nth-last-child(-n+2) { border-bottom: 0; }
      .section-top { align-items: start; flex-direction: column; gap: 12px; }
      .intro-band { padding: 24px; }
      .intro-copy { grid-template-columns: 1fr 1fr; }
      .service-grid, .solution-list, .workflow, .faq-list, .quote-grid, .case-grid { grid-template-columns: 1fr; }
      .workflow { gap: 0; }
      .step { border-right: 0; border-bottom: 1px solid var(--line); }
      .step:last-child { border-bottom: 0; }
      .step-number { margin-bottom: 8px; }
      .token-panel, .join-band { grid-template-columns: 1fr; }
      .token-panel .button { justify-self: start; }
      .article-list { grid-template-columns: 1fr 1fr; }
      .contact-form { grid-template-columns: 1fr; padding: 18px; }
      .field.full { grid-column: auto; }
      .footer-top { align-items: start; flex-direction: column; }
      .footer-links { justify-content: flex-start; }
      .float-contact { right: 12px; bottom: 14px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }