:root {
      color-scheme: light;
      --ink: #18213c;
      --muted: #65708a;
      --line: #e5e8f2;
      --paper: #f7f8ff;
      --white: #fff;
      --violet: #6547ed;
      --blue: #2584ed;
      --pink: #ff6d9b;
      --mint: #1eaa96;
      --shadow: 0 16px 44px rgba(52, 58, 112, .09);
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    body {
      margin: 0;
      color: var(--ink);
      background:
        radial-gradient(ellipse at 8% 12%, rgba(212, 205, 255, .22), transparent 28rem),
        radial-gradient(ellipse at 92% 39%, rgba(202, 233, 255, .23), transparent 30rem),
        var(--paper);
      font-family: "Inter", "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 { display: block; 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(226, 229, 242, .85);
      background: rgba(255, 255, 255, .92);
      backdrop-filter: blur(14px);
    }
    .nav-row { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; flex: 0 0 auto; align-items: center; gap: 11px; font-weight: 800; letter-spacing: .01em; }
    .ai-page-logo { width: 42px; max-height: 42px; object-fit: contain; }
    .brand-name { font-size: 17px; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; }
    .nav-links a { padding: 10px 11px; color: #4c5671; font-size: 13px; white-space: nowrap; transition: color .2s ease; }
    .nav-links a:hover { color: var(--violet); }
    .nav-actions { display: flex; align-items: center; gap: 10px; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 13px; background: white; color: var(--ink); cursor: pointer; }
    .button {
      display: inline-flex;
      min-height: 46px;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 0 19px;
      border: 1px solid transparent;
      border-radius: 14px;
      background: linear-gradient(105deg, var(--violet), #3989f4);
      box-shadow: 0 8px 20px rgba(91, 79, 224, .2);
      color: white;
      font-weight: 700;
      transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
    }
    .button:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(91, 79, 224, .26); filter: saturate(1.08); }
    .button:active { transform: translateY(0); }
    .button.secondary { background: white; color: var(--ink); border-color: #dfe3f0; box-shadow: none; }
    .button.small { min-height: 40px; padding-inline: 15px; border-radius: 12px; font-size: 13px; }
    .hero { position: relative; overflow: hidden; padding: 84px 0 64px; }
    .hero::before, .hero::after { position: absolute; z-index: -1; content: ""; border-radius: 50%; filter: blur(1px); pointer-events: none; }
    .hero::before { width: 340px; height: 340px; top: 30px; right: -110px; background: radial-gradient(circle, rgba(129, 101, 255, .16), rgba(129, 101, 255, 0) 70%); animation: drift 9s ease-in-out infinite alternate; }
    .hero::after { width: 250px; height: 250px; left: -100px; bottom: 0; background: radial-gradient(circle, rgba(35, 173, 223, .13), transparent 70%); animation: drift 11s ease-in-out infinite alternate-reverse; }
    .hero-grid { display: grid; grid-template-columns: minmax(0, 1.18fr) minmax(275px, .82fr); align-items: center; gap: 48px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: #5543c7; font-size: 13px; font-weight: 800; letter-spacing: .08em; }
    .eyebrow::before { width: 23px; height: 2px; content: ""; background: linear-gradient(90deg, var(--pink), var(--violet)); }
    h1 { max-width: 720px; margin: 19px 0 18px; font-size: clamp(38px, 6vw, 68px); line-height: 1.12; letter-spacing: -.055em; }
    .hero h1 span { color: var(--violet); }
    .hero-copy { max-width: 610px; margin: 0; color: var(--muted); font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 29px; }
    .trust-line { display: flex; flex-wrap: wrap; gap: 9px 18px; margin-top: 24px; color: #59647d; font-size: 13px; }
    .trust-line span::before { content: "✓"; margin-right: 7px; color: var(--mint); font-weight: 900; }
    .hero-panel { position: relative; overflow: hidden; padding: 27px; border: 1px solid rgba(255,255,255,.9); border-radius: 27px; background: linear-gradient(145deg, rgba(255,255,255,.94), rgba(246,245,255,.92)); box-shadow: 0 24px 70px rgba(75, 70, 142, .14); }
    .hero-panel::before { position: absolute; width: 150px; height: 150px; top: -85px; right: -70px; border: 1px solid rgba(103, 74, 237, .2); border-radius: 50%; box-shadow: 0 0 0 18px rgba(103, 74, 237, .035), 0 0 0 38px rgba(103, 74, 237, .025); content: ""; }
    .panel-kicker { margin: 0 0 7px; color: #7163ca; font-size: 12px; font-weight: 800; letter-spacing: .08em; }
    .hero-panel h2 { margin: 0 0 19px; font-size: 22px; }
    .model-pills { display: flex; flex-wrap: wrap; gap: 8px; }
    .model-pills span, .tag { display: inline-flex; align-items: center; padding: 6px 10px; border: 1px solid #e7e6f6; border-radius: 999px; background: #fff; color: #505a77; font-size: 12px; }
    .panel-note { margin: 18px 0 0; padding-top: 15px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 48px; }
    .metric { padding: 17px 18px; border: 1px solid rgba(227, 229, 242, .9); border-radius: 17px; background: rgba(255,255,255,.83); }
    .metric strong { display: block; color: #4433b7; font-size: 19px; }
    .metric span { color: var(--muted); font-size: 12px; }
    .section { padding: 76px 0; }
    .section.compact { padding: 52px 0; }
    .section-head { max-width: 700px; margin-bottom: 30px; }
    .section-head h2 { margin: 8px 0 10px; font-size: clamp(27px, 4vw, 40px); line-height: 1.2; letter-spacing: -.035em; }
    .section-head p { margin: 0; color: var(--muted); }
    .section-label { color: var(--violet); font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
    .about-band { display: grid; grid-template-columns: .85fr 1.15fr; align-items: start; gap: 42px; padding: 32px; border: 1px solid #e5e6f3; border-radius: 25px; background: linear-gradient(125deg, #fff, #f2f1ff 72%, #f4fbff); }
    .about-band h2 { margin: 7px 0 12px; font-size: 30px; line-height: 1.25; }
    .about-band p { margin: 0; color: var(--muted); }
    .about-points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 13px; }
    .about-point { padding: 17px; border-radius: 16px; background: rgba(255,255,255,.8); }
    .about-point strong { display: block; margin-bottom: 3px; font-size: 14px; }
    .about-point span { color: var(--muted); font-size: 12px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .service-card { min-height: 190px; padding: 22px; border: 1px solid var(--line); border-radius: 20px; background: rgba(255,255,255,.88); transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease; }
    .service-card:hover { transform: translateY(-4px); border-color: #cdc5ff; box-shadow: var(--shadow); }
    .service-icon { display: grid; width: 42px; height: 42px; place-items: center; margin-bottom: 15px; border-radius: 14px; background: linear-gradient(140deg, #eeeaff, #eaf5ff); color: #5e4bda; font-size: 19px; font-weight: 800; }
    .service-card h3 { margin: 0 0 7px; font-size: 17px; }
    .service-card p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-card .tag { margin-top: 13px; background: #f7f6ff; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--line); border-radius: 23px; overflow: hidden; background: white; }
    .step { position: relative; padding: 24px 22px; }
    .step + .step { border-left: 1px solid var(--line); }
    .step-number { color: #8c7af2; font-size: 12px; font-weight: 800; letter-spacing: .1em; }
    .step h3 { margin: 9px 0 5px; font-size: 16px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .solution-layout { display: grid; grid-template-columns: 1fr .75fr; gap: 20px; align-items: start; }
    .solution-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .solution-item { padding: 17px 18px; border: 1px solid var(--line); border-radius: 16px; background: white; }
    .solution-item strong { display: block; margin-bottom: 4px; font-size: 14px; }
    .solution-item span { color: var(--muted); font-size: 12px; }
    .side-note { padding: 24px; border-radius: 20px; background: #222b54; color: #fff; }
    .side-note h3 { margin: 0 0 9px; font-size: 19px; }
    .side-note p { margin: 0 0 17px; color: #d7dcf0; font-size: 13px; }
    .side-note .button { background: #fff; color: #282c55; box-shadow: none; }
    .image-strip { display: grid; grid-template-columns: 1.2fr .8fr; gap: 16px; }
    .image-frame { overflow: hidden; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
    .image-frame img { width: 100%; height: auto; object-fit: contain; }
    .image-frame figcaption { padding: 12px 15px; color: var(--muted); font-size: 13px; }
    .image-pair { display: grid; gap: 16px; }
    .comparison-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 20px; background: white; }
    .comparison { width: 100%; border-collapse: collapse; min-width: 700px; }
    .comparison th, .comparison td { padding: 15px 17px; border-bottom: 1px solid #edf0f6; text-align: left; vertical-align: top; }
    .comparison th { background: #f4f2ff; color: #3d3672; font-size: 13px; }
    .comparison td { color: #556079; font-size: 13px; }
    .comparison tr:last-child td { border-bottom: 0; }
    .rating { display: grid; grid-template-columns: .7fr 1.3fr; gap: 24px; align-items: center; margin-bottom: 20px; padding: 22px 24px; border: 1px solid #e4ddff; border-radius: 20px; background: linear-gradient(115deg, #f2efff, #fff8fc); }
    .rating-score { color: #4734bd; font-size: 42px; font-weight: 850; line-height: 1; }
    .rating-score small { color: var(--muted); font-size: 14px; font-weight: 600; }
    .stars { color: #e89a24; letter-spacing: 3px; }
    .rating p { margin: 6px 0 0; color: var(--muted); font-size: 12px; }
    .rating-copy strong { display: block; margin-bottom: 4px; }
    .rating-copy span { color: var(--muted); font-size: 13px; }
    .reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .review { padding: 20px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
    .review p { margin: 0 0 16px; color: #505b75; font-size: 13px; }
    .review strong { font-size: 13px; }
    .review span { display: block; color: #8590a6; font-size: 11px; }
    .news-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
    .news-link { display: flex; min-height: 90px; flex-direction: column; justify-content: space-between; padding: 15px; border: 1px solid var(--line); border-radius: 15px; background: white; transition: border-color .2s ease, transform .2s ease; }
    .news-link:hover { transform: translateY(-3px); border-color: #b9adff; }
    .news-link strong { font-size: 13px; line-height: 1.45; }
    .news-link span { color: var(--violet); font-size: 11px; }
    .form-layout { display: grid; grid-template-columns: .8fr 1.2fr; align-items: start; gap: 28px; }
    .contact-panel { padding: 25px; border-radius: 22px; background: linear-gradient(150deg, #292d5a, #443c83); color: white; }
    .contact-panel h3 { margin: 0 0 8px; font-size: 22px; }
    .contact-panel p { margin: 0 0 18px; color: #d7dcf2; font-size: 13px; }
    .contact-lines { display: grid; gap: 9px; color: #f0efff; font-size: 13px; }
    .contact-lines a { text-decoration: underline; text-decoration-color: rgba(255,255,255,.4); text-underline-offset: 3px; }
    .qr-wrap { width: 150px; margin-top: 20px; padding: 9px; border-radius: 14px; background: white; }
    .qr-wrap img { width: 100%; border-radius: 7px; }
    .contact-panel .small-note { margin-top: 8px; color: #e2e2f4; font-size: 11px; }
    .lead-form { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; padding: 24px; border: 1px solid var(--line); border-radius: 22px; background: white; }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { color: #424d68; font-size: 12px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid #dfe4ef; border-radius: 11px; outline: none; background: #fbfcff; color: var(--ink); }
    .field textarea { min-height: 104px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: #9180ef; box-shadow: 0 0 0 3px rgba(101,71,237,.1); }
    .lead-form .button { grid-column: 1 / -1; justify-self: start; cursor: pointer; }
    .faq-list { display: grid; gap: 10px; }
    .faq-list details { padding: 0 18px; border: 1px solid var(--line); border-radius: 15px; background: rgba(255,255,255,.9); }
    .faq-list summary { position: relative; padding: 16px 30px 16px 0; cursor: pointer; list-style: none; font-size: 14px; font-weight: 700; }
    .faq-list summary::-webkit-details-marker { display: none; }
    .faq-list summary::after { position: absolute; top: 15px; right: 2px; content: "+"; color: var(--violet); font-size: 20px; font-weight: 400; transition: transform .2s ease; }
    .faq-list details[open] summary::after { transform: rotate(45deg); }
    .faq-list details p { margin: 0; padding: 0 0 16px; color: var(--muted); font-size: 13px; }
    .partners { display: flex; flex-wrap: wrap; gap: 9px; }
    .partners a { padding: 8px 12px; border: 1px solid var(--line); border-radius: 999px; background: white; color: #59647d; font-size: 12px; transition: color .2s ease, border-color .2s ease; }
    .partners a:hover { border-color: #b8aaff; color: var(--violet); }
    .join-band { display: flex; align-items: center; justify-content: space-between; gap: 22px; padding: 25px 27px; border-radius: 21px; background: linear-gradient(110deg, #edeaff, #e9f5ff); }
    .join-band h2 { margin: 0 0 4px; font-size: 21px; }
    .join-band p { margin: 0; color: var(--muted); font-size: 13px; }
    .site-footer { margin-top: 62px; padding: 26px 0; border-top: 1px solid var(--line); background: #fff; color: #35405a; }
    .footer-row { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
    .footer-row p { margin: 0; color: #64708a; font-size: 12px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 16px; color: #4f5a74; font-size: 12px; }
    .footer-links a:hover { color: var(--violet); }
    .floating-contact { position: fixed; z-index: 15; right: 18px; bottom: 20px; display: grid; gap: 9px; }
    .floating-contact a { display: grid; width: 48px; height: 48px; place-items: center; border: 1px solid #e5e6f0; border-radius: 16px; background: white; box-shadow: 0 8px 22px rgba(34,42,82,.13); color: #4d3ed1; font-size: 12px; font-weight: 800; transition: transform .2s ease; }
    .floating-contact a:hover { transform: translateY(-3px); }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @keyframes drift { from { transform: translate(0, 0); } to { transform: translate(-16px, 18px); } }
    @media (max-width: 1020px) {
      .nav-links a { padding-inline: 7px; font-size: 12px; }
      .nav-actions .button { padding-inline: 13px; font-size: 12px; }
      .hero-grid { gap: 28px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .news-grid { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 780px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .nav-row { min-height: 66px; }
      .menu-toggle { display: inline-grid; place-items: center; }
      .nav-actions .button { display: none; }
      .nav-links { position: absolute; top: 66px; left: 0; right: 0; display: none; align-items: stretch; padding: 8px 16px 15px; border-bottom: 1px solid var(--line); background: white; box-shadow: 0 12px 20px rgba(30,38,73,.07); }
      .nav-links.is-open { display: grid; grid-template-columns: repeat(2, 1fr); }
      .nav-links a { padding: 10px 12px; border-radius: 10px; font-size: 13px; }
      .nav-links a:hover { background: #f5f3ff; }
      .hero { padding: 58px 0 43px; }
      .hero-grid { grid-template-columns: 1fr; gap: 28px; }
      .hero-panel { max-width: 560px; }
      .metrics { grid-template-columns: repeat(2, 1fr); margin-top: 30px; }
      .section { padding: 58px 0; }
      .about-band, .solution-layout, .form-layout { grid-template-columns: 1fr; }
      .workflow { grid-template-columns: repeat(2, 1fr); }
      .step:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
      .step:nth-child(4) { border-top: 1px solid var(--line); }
      .reviews { grid-template-columns: repeat(2, 1fr); }
      .image-strip { grid-template-columns: 1fr; }
      .image-pair { grid-template-columns: repeat(2, 1fr); }
      .rating { grid-template-columns: 1fr; gap: 12px; }
    }
    @media (max-width: 520px) {
      .brand-name { font-size: 15px; }
      h1 { font-size: 42px; }
      .hero-copy { font-size: 15px; }
      .hero-actions .button { width: 100%; }
      .hero-panel { padding: 22px; }
      .service-grid, .solution-list, .reviews, .about-points { grid-template-columns: 1fr; }
      .workflow { grid-template-columns: 1fr; }
      .step + .step, .step:nth-child(3), .step:nth-child(4) { border-top: 1px solid var(--line); border-left: 0; }
      .news-grid { grid-template-columns: repeat(2, 1fr); }
      .image-pair { grid-template-columns: 1fr; }
      .lead-form { grid-template-columns: 1fr; padding: 18px; }
      .field.full, .lead-form .button { grid-column: 1; }
      .join-band, .footer-row { align-items: flex-start; flex-direction: column; }
      .join-band .button { width: 100%; }
      .floating-contact { right: 12px; bottom: 12px; }
      .floating-contact a { width: 43px; height: 43px; border-radius: 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; }
    }