/* Layout: dark engineering surface, 12-col grid at 1200px, thin cyan "circuit" rules, one hero moment (logo assembles from two halves). */
  :root {
    --bg: #0a0c12;
    --bg-2: #10131c;
    --panel: #141827;
    --line: #232a3d;
    --fg: #eef1f8;
    --fg-2: #9aa3b8;
    --blue: #3b7bf0;
    --blue-deep: #2a5ec4;
    --cyan: #5fe3e0;
    --ink: #f2f4fa;
    /* фирменные цвета знака, одинаковы в обеих темах */
    --logo-blue: #0d78f6; --logo-blue-deep: #0c4bb2; --logo-cyan: #14e4dc;
    --display: "Unbounded", "Manrope", system-ui, sans-serif;
    --body: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
    --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
    color-scheme: dark;
  }
  @media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]) {
      --bg: #f5f7fb; --bg-2: #ffffff; --panel: #ffffff; --line: #dbe1ee;
      --fg: #0b0e17; --fg-2: #555e73; --blue: #2a5ec4; --blue-deep: #1f4aa0; --cyan: #15a9a7; --ink: #0b0e17;
      color-scheme: light;
    }
  }
  :root[data-theme="light"] {
    --bg: #f5f7fb; --bg-2: #ffffff; --panel: #ffffff; --line: #dbe1ee;
    --fg: #0b0e17; --fg-2: #555e73; --blue: #2a5ec4; --blue-deep: #1f4aa0; --cyan: #15a9a7; --ink: #0b0e17;
    color-scheme: light;
  }

  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0; background: var(--bg); color: var(--fg);
    font-family: var(--body); font-size: 16px; line-height: 1.55;
    -webkit-font-smoothing: antialiased;
  }
  a { color: inherit; text-decoration: none; }
  h1, h2, h3 { font-family: var(--display); margin: 0; text-wrap: balance; letter-spacing: -0.01em; }
  h2 { font-size: clamp(26px, 3.4vw, 40px); font-weight: 700; line-height: 1.12; }
  h3 { font-size: 18px; font-weight: 600; line-height: 1.3; }
  p { margin: 0; }
  .wrap { max-width: 1200px; margin-inline: auto; padding-inline: clamp(16px, 4vw, 40px); }
  .eyebrow { font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--cyan); }
  .section { padding-block: clamp(56px, 8vw, 110px); border-top: 1px solid var(--line); }
  .section-head { display: grid; gap: 14px; max-width: 760px; margin-bottom: clamp(28px, 4vw, 48px); }
  .section-head p { color: var(--fg-2); font-size: 17px; max-width: 62ch; }

  /* Buttons */
  .btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 22px; border-radius: 10px; font-weight: 600; font-size: 15px; border: 1px solid transparent; cursor: pointer; font-family: var(--body); transition: transform .15s ease, background .15s ease, border-color .15s ease; }
  .btn:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
  .btn-primary { background: var(--blue); color: #fff; }
  .btn-primary:hover { background: var(--blue-deep); transform: translateY(-1px); }
  .btn-ghost { border-color: var(--line); color: var(--fg); background: transparent; }
  .btn-ghost:hover { border-color: var(--cyan); }
  .btn svg { width: 16px; height: 16px; }

  /* Nav */
  .nav { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; backdrop-filter: blur(14px); background: color-mix(in srgb, var(--bg) 78%, transparent); border-bottom: 1px solid var(--line); }
  .nav .wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 68px; }
  .brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; white-space: nowrap; font-family: var(--display); font-weight: 700; font-size: 15px; letter-spacing: 0.06em; }
  .brand svg { width: 34px; height: 34px; }
  .nav-links { display: flex; gap: 26px; font-size: 14px; color: var(--fg-2); font-weight: 500; white-space: nowrap; }
  .nav-links a:hover { color: var(--fg); }
  .nav .btn { padding: 10px 16px; font-size: 14px; }
  .nav-right { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
  @media (max-width: 1120px) { .nav-links { gap: 18px; font-size: 13px; } }
  @media (max-width: 1060px) { .nav-links { display: none; } }

  /* Theme switch: auto (follows OS) / light / dark */
  .theme { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; padding: 3px; gap: 2px; background: var(--bg-2); }
  .theme button { width: 30px; height: 30px; padding: 0; border: 0; border-radius: 999px; background: transparent; color: var(--fg-2); cursor: pointer; display: inline-flex; align-items: center; justify-content: center; }
  .theme button svg { width: 15px; height: 15px; }
  .theme button:hover { color: var(--fg); }
  .theme button[aria-pressed="true"] { background: var(--panel); color: var(--fg); box-shadow: 0 1px 2px rgba(0,0,0,.25); }
  .theme button:focus-visible { outline: 2px solid var(--blue); outline-offset: 1px; }
  @media (max-width: 560px) { .nav .btn-primary { display: none; } .nav .wrap { height: 60px; } .brand svg { width: 30px; height: 30px; } }

  /* Hero */
  .hero { position: relative; overflow: hidden; padding-block: clamp(56px, 9vw, 120px) clamp(48px, 7vw, 96px); }
  .hero-grid { position: absolute; inset: 0; pointer-events: none;
    background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 56px 56px; opacity: .35;
    mask-image: radial-gradient(ellipse 70% 60% at 65% 40%, #000 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 65% 40%, #000 30%, transparent 75%);
  }
  .hero-glow { position: absolute; width: 640px; height: 640px; right: -160px; top: -200px; border-radius: 50%; pointer-events: none;
    background: radial-gradient(circle, color-mix(in srgb, var(--blue) 38%, transparent) 0%, transparent 65%); filter: blur(20px); }
  .hero .wrap { position: relative; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
  @media (max-width: 900px) { .hero .wrap { grid-template-columns: 1fr; } .hero-art { order: -1; max-width: 320px; } }
  .hero-copy { display: grid; gap: 26px; }
  .hero h1 { font-size: clamp(34px, 5.2vw, 66px); font-weight: 700; line-height: 1.04; }
  .hero h1 em { font-style: normal; color: var(--cyan); }
  .hero-sub { font-size: clamp(17px, 1.6vw, 20px); color: var(--fg-2); max-width: 54ch; }
  .hero-tags { display: flex; flex-wrap: wrap; gap: 10px; font-family: var(--mono); font-size: 13px; }
  .hero-tags span { padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; color: var(--fg-2); }
  .hero-tags span b { color: var(--cyan); font-weight: 500; margin-right: 6px; }
  .hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }
  .hero-meta { display: flex; flex-wrap: wrap; gap: 24px 36px; padding-top: 10px; border-top: 1px solid var(--line); }
  .hero-meta div { display: grid; gap: 2px; }
  .hero-meta strong { font-family: var(--display); font-size: 22px; font-weight: 700; }
  .hero-meta small { color: var(--fg-2); font-size: 13px; }

  .hero-art { position: relative; aspect-ratio: 1; max-width: 460px; width: 100%; margin-inline: auto; }
  .hero-art svg { width: 100%; height: 100%; display: block; overflow: visible; }
  .mark-left { transform-origin: 50% 50%; animation: fromLeft 1.1s cubic-bezier(.2,.8,.2,1) both; }
  .mark-right { transform-origin: 50% 50%; animation: fromRight 1.1s cubic-bezier(.2,.8,.2,1) both; }
  .mark-cyan { animation: pop .6s .9s cubic-bezier(.2,.8,.2,1) both; transform-origin: 50% 50%; }
  .orbit { fill: none; stroke: var(--cyan); stroke-width: 1; opacity: .5; stroke-dasharray: 4 10; animation: spin 40s linear infinite; transform-origin: 50% 50%; }
  .orbit.b { stroke: var(--blue); animation-duration: 60s; animation-direction: reverse; opacity: .35; }
  .hero-tag { position: absolute; font-family: var(--mono); font-size: 12px; color: var(--fg-2); background: var(--bg); border: 1px solid var(--line); padding: 6px 10px; border-radius: 8px; }
  .hero-tag i { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); margin-right: 8px; box-shadow: 0 0 10px var(--cyan); }
  @keyframes fromLeft { from { opacity: 0; transform: translate(-60px, -30px) rotate(-6deg); } to { opacity: 1; transform: none; } }
  @keyframes fromRight { from { opacity: 0; transform: translate(60px, 30px) rotate(6deg); } to { opacity: 1; transform: none; } }
  @keyframes pop { from { opacity: 0; transform: scale(.4); } to { opacity: 1; transform: none; } }
  @keyframes spin { to { transform: rotate(360deg); } }

  /* Directions */
  .cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
  @media (max-width: 900px) { .cards { grid-template-columns: 1fr; } }
  .card { position: relative; background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 28px; display: grid; gap: 14px; align-content: start; min-width: 0; transition: border-color .2s, transform .2s; }
  .card:hover { border-color: var(--blue); transform: translateY(-2px); }
  .card .idx { font-family: var(--mono); font-size: 12px; color: var(--cyan); }
  .card p { color: var(--fg-2); font-size: 15px; }
  .card ul { margin: 6px 0 0; padding: 0; list-style: none; display: grid; gap: 8px; font-size: 14px; }
  .card li { display: flex; gap: 10px; align-items: baseline; }
  .card li::before { content: ""; width: 6px; height: 6px; border-radius: 1px; background: var(--blue); flex: none; transform: translateY(-2px) rotate(45deg); }
  .card.featured { background: linear-gradient(160deg, color-mix(in srgb, var(--blue) 22%, var(--panel)), var(--panel) 60%); border-color: color-mix(in srgb, var(--blue) 50%, var(--line)); }

  /* Process */
  .steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: var(--panel); }
  @media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } }
  @media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }
  .step { padding: 28px 26px; display: grid; gap: 12px; align-content: start; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); min-width: 0; }
  .step .n { font-family: var(--mono); font-size: 12px; color: var(--cyan); display: flex; align-items: center; gap: 10px; }
  .step .n::after { content: ""; flex: 1; height: 1px; background: var(--line); }
  .step .t { font-family: var(--mono); font-size: 12px; color: var(--fg-2); }
  .step p { color: var(--fg-2); font-size: 15px; }
  .step strong.when { font-family: var(--display); font-weight: 600; font-size: 13px; color: var(--fg); }

  /* Product */
  .product { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(28px, 5vw, 64px); align-items: center; }
  @media (max-width: 900px) { .product { grid-template-columns: 1fr; } }
  .product-copy { display: grid; gap: 18px; }
  .product-copy p { color: var(--fg-2); font-size: 16px; }
  .chips { display: flex; flex-wrap: wrap; gap: 8px; }
  .chips span { font-size: 13px; padding: 6px 12px; border-radius: 8px; background: var(--bg-2); border: 1px solid var(--line); color: var(--fg-2); }
  .mock { background: var(--bg-2); border: 1px solid var(--line); border-radius: 16px; padding: 16px; display: grid; gap: 12px; box-shadow: 0 30px 80px -40px color-mix(in srgb, var(--blue) 60%, transparent); }
  .mock-bar { display: flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 12px; color: var(--fg-2); }
  .mock-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
  .mock-bar i:first-child { background: var(--cyan); }
  .mock-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
  @media (max-width: 560px) { .mock-grid { grid-template-columns: repeat(2, 1fr); } }
  .kpi { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 12px; display: grid; gap: 4px; min-width: 0; }
  .kpi small { font-size: 11px; color: var(--fg-2); text-transform: uppercase; letter-spacing: .08em; }
  .kpi b { font-family: var(--display); font-size: 18px; font-weight: 600; font-variant-numeric: tabular-nums; }
  .kpi span { font-family: var(--mono); font-size: 11px; color: var(--cyan); }
  .mock-chart { height: 120px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); padding: 10px; }
  .mock-chart svg { width: 100%; height: 100%; display: block; }
  .mock-rank { display: grid; gap: 8px; }
  .rank { display: grid; grid-template-columns: 24px 1fr auto; gap: 10px; align-items: center; font-size: 13px; }
  .rank .bar { height: 8px; border-radius: 4px; background: var(--line); overflow: hidden; }
  .rank .bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--blue), var(--cyan)); }
  .rank em { font-style: normal; font-family: var(--mono); font-size: 12px; color: var(--fg-2); }
  .mock-note { font-size: 12px; color: var(--fg-2); font-family: var(--mono); }

  /* Games */
  .games { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
  @media (max-width: 760px) { .games { grid-template-columns: 1fr; } }
  .game { position: relative; border-radius: 16px; border: 1px solid var(--line); overflow: hidden; min-height: 260px; display: grid; align-content: end; padding: 28px; gap: 10px; background: var(--panel); }
  .game::before { content: ""; position: absolute; inset: 0; background: radial-gradient(ellipse at 20% 0%, color-mix(in srgb, var(--blue) 45%, transparent), transparent 60%), repeating-linear-gradient(135deg, transparent 0 18px, color-mix(in srgb, var(--cyan) 10%, transparent) 18px 19px); }
  .game.two::before { background: radial-gradient(ellipse at 80% 0%, color-mix(in srgb, var(--cyan) 30%, transparent), transparent 60%), repeating-linear-gradient(45deg, transparent 0 18px, color-mix(in srgb, var(--blue) 14%, transparent) 18px 19px); }
  .game > * { position: relative; }
  .game .tag { font-family: var(--mono); font-size: 12px; color: var(--cyan); }
  .game p { color: var(--fg-2); font-size: 15px; }

  /* Why */
  .why { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px 40px; }
  @media (max-width: 900px) { .why { grid-template-columns: 1fr; } }
  .why div { display: grid; gap: 10px; border-top: 2px solid var(--blue); padding-top: 18px; }
  .why p { color: var(--fg-2); font-size: 15px; }

  /* Contact */
  .contact { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 64px); background: var(--panel); border: 1px solid var(--line); border-radius: 20px; padding: clamp(24px, 4vw, 48px); }
  @media (max-width: 860px) { .contact { grid-template-columns: 1fr; } }
  .contact-copy { display: grid; gap: 18px; align-content: start; }
  .contact-copy p { color: var(--fg-2); }
  .contact-copy .line { display: grid; gap: 4px; font-size: 15px; }
  .contact-copy .line span { color: var(--fg-2); font-size: 13px; }
  .contact-copy code { font-family: var(--mono); font-size: 14px; user-select: all; }
  form { display: grid; gap: 14px; }
  .field { display: grid; gap: 6px; }
  .field label { font-size: 13px; color: var(--fg-2); font-weight: 600; }
  .field input, .field textarea, .field select { width: 100%; font: inherit; font-size: 15px; color: var(--fg); background: var(--bg-2); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
  .field textarea { min-height: 110px; resize: vertical; }
  .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
  @media (max-width: 560px) { .row2 { grid-template-columns: 1fr; } }
  .consent { font-size: 12px; color: var(--fg-2); display: flex; gap: 10px; align-items: flex-start; }
  .consent input { margin-top: 3px; }
  .toast { font-size: 14px; color: var(--cyan); font-family: var(--mono); }

  /* Footer */
  footer { border-top: 1px solid var(--line); padding-block: 36px; font-size: 13px; color: var(--fg-2); }
  footer .wrap { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: start; }
  @media (max-width: 760px) { footer .wrap { grid-template-columns: 1fr; } }
  footer .brand { color: var(--fg); margin-bottom: 10px; }
  footer .req { font-family: var(--mono); font-size: 12px; line-height: 1.7; }
  footer .links { display: grid; gap: 8px; text-align: right; }
  @media (max-width: 760px) { footer .links { text-align: left; } }
  footer .links a:hover { color: var(--fg); }

  /* Segments: tabs */
  .tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
  .tab { font: inherit; font-weight: 600; font-size: 14px; padding: 10px 18px; border-radius: 999px; border: 1px solid var(--line); background: transparent; color: var(--fg-2); cursor: pointer; }
  .tab:hover { border-color: var(--cyan); color: var(--fg); }
  .tab.is-active { background: var(--blue); border-color: var(--blue); color: #fff; }
  .panel[hidden] { display: none !important; }
  .panel { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
  @media (max-width: 900px) { .panel { grid-template-columns: 1fr; } }
  .offer { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 26px; display: grid; gap: 12px; align-content: start; min-width: 0; }
  .offer p { font-size: 14px; color: var(--fg-2); }
  .offer .ai b { color: var(--cyan); font-weight: 600; }
  .offer .promise { color: var(--fg); font-weight: 600; font-size: 15px; padding-top: 10px; border-top: 1px solid var(--line); }

  /* Origin AI */
  .ai-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 64px); align-items: start; }
  @media (max-width: 900px) { .ai-grid { grid-template-columns: 1fr; } }
  .ai-copy { display: grid; gap: 18px; }
  .ai-copy > p { color: var(--fg-2); font-size: 16px; }
  .ai-list { margin: 0; padding-left: 0; list-style: none; counter-reset: ai; display: grid; gap: 12px; }
  .ai-list li { counter-increment: ai; display: grid; grid-template-columns: 34px 1fr; gap: 12px; align-items: baseline; font-size: 15px; color: var(--fg-2); }
  .ai-list li::before { content: counter(ai, decimal-leading-zero); font-family: var(--mono); font-size: 12px; color: var(--cyan); }
  .ai-list li b { color: var(--fg); }
  .chat { background: var(--bg-2); border: 1px solid var(--line); border-radius: 16px; padding: 16px; display: grid; gap: 12px; box-shadow: 0 30px 80px -40px color-mix(in srgb, var(--cyan) 50%, transparent); }
  .chat-bar { display: flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 12px; color: var(--fg-2); }
  .chat-bar i { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
  .msg { max-width: 92%; padding: 12px 14px; border-radius: 12px; font-size: 14px; line-height: 1.5; display: grid; gap: 8px; min-width: 0; overflow-x: auto; }
  .msg.user { justify-self: end; background: var(--blue); color: #fff; border-bottom-right-radius: 4px; }
  .msg.bot { justify-self: start; background: var(--panel); border: 1px solid var(--line); border-bottom-left-radius: 4px; color: var(--fg); }
  .msg table { width: 100%; border-collapse: collapse; font-size: 12.5px; font-variant-numeric: tabular-nums; }
  .msg th, .msg td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
  .msg th { color: var(--fg-2); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; }
  .msg td:last-child, .msg th:last-child { text-align: right; }
  @media (max-width: 1000px) { .msg th, .msg td { white-space: normal; } }

  /* Pricing */
  .prices { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
  @media (max-width: 1000px) { .prices { grid-template-columns: 1fr 1fr; } }
  @media (max-width: 560px) { .prices { grid-template-columns: 1fr; } }
  .price { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 26px; display: grid; gap: 8px; align-content: start; min-width: 0; }
  .price.featured { border-color: var(--blue); background: linear-gradient(160deg, color-mix(in srgb, var(--blue) 22%, var(--panel)), var(--panel) 60%); }
  .price .idx { font-family: var(--mono); font-size: 12px; color: var(--cyan); }
  .price b { font-family: var(--display); font-size: 22px; font-weight: 700; margin-top: 6px; }
  .price small { color: var(--fg-2); font-size: 13px; }
  .price p { color: var(--fg-2); font-size: 14px; padding-top: 10px; border-top: 1px solid var(--line); margin-top: 6px; }

  /* FAQ */
  .faq { display: grid; gap: 10px; max-width: 820px; }
  .faq details { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 0 20px; }
  .faq summary { cursor: pointer; padding: 16px 0; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
  .faq summary::-webkit-details-marker { display: none; }
  .faq summary::after { content: "+"; font-family: var(--mono); color: var(--cyan); flex: none; }
  .faq details[open] summary::after { content: "–"; }
  .faq details p { color: var(--fg-2); font-size: 15px; padding-bottom: 16px; max-width: 70ch; }

  @media (prefers-reduced-motion: reduce) {
    .mark-left, .mark-right, .mark-cyan, .orbit { animation: none; }
    .btn, .card { transition: none; }
  }

  /* ===== Многостраничный сайт: дополнения к прототипу ===== */
  .skip { position: absolute; left: -9999px; top: 8px; z-index: 50; background: var(--blue); color: #fff; padding: 10px 14px; border-radius: 8px; }
  .skip:focus { left: 16px; }
  .nav-links a[aria-current="page"] { color: var(--fg); box-shadow: inset 0 -2px 0 var(--cyan); padding-bottom: 4px; }
  .menu-btn { display: none; width: 40px; height: 40px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg-2); color: var(--fg); cursor: pointer; align-items: center; justify-content: center; padding: 0; }
  .menu-btn svg { width: 20px; height: 20px; }
  .menu-btn .i-close { display: none; }
  .menu-btn[aria-expanded="true"] .i-open { display: none; }
  .menu-btn[aria-expanded="true"] .i-close { display: inline; }
  @media (max-width: 1060px) {
    .menu-btn { display: inline-flex; }
    .nav-links.is-open { display: grid; position: absolute; top: 100%; left: 0; right: 0; gap: 0; padding: 8px clamp(16px, 4vw, 40px) 16px; background: var(--bg); border-bottom: 1px solid var(--line); font-size: 16px; }
    .nav-links.is-open a { padding: 14px 0; border-bottom: 1px solid var(--line); }
    .nav-links.is-open a[aria-current="page"] { box-shadow: none; color: var(--cyan); }
  }
  @media (max-width: 400px) { .theme button { width: 26px; height: 26px; } .nav-right { gap: 8px; } .brand { font-size: 13px; gap: 8px; } }

  .more { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 14px; color: var(--cyan); margin-top: 4px; }
  .more::after { content: "→"; transition: transform .15s; }
  .more:hover::after { transform: translateX(3px); }
  .section-more { margin-top: 24px; }
  .btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

  .page-hero { position: relative; overflow: hidden; padding-block: clamp(40px, 7vw, 96px) clamp(40px, 6vw, 80px); }
  .page-hero > .wrap { position: relative; display: grid; gap: 22px; }
  .page-hero > .wrap:not(.product) { max-width: 1200px; }
  .page-hero h1 { font-size: clamp(30px, 4.4vw, 56px); font-weight: 700; line-height: 1.06; max-width: 20ch; }
  .page-hero .product-copy h1 { max-width: none; }
  .page-hero.compact { padding-block: clamp(32px, 5vw, 64px) clamp(24px, 4vw, 48px); }
  .page-hero.compact h1 { font-size: clamp(26px, 3.6vw, 44px); max-width: 26ch; }
  .crumbs { display: flex; gap: 8px; font-family: var(--mono); font-size: 12px; color: var(--fg-2); }
  .crumbs a:hover { color: var(--fg); }
  .section.flush { border-top: 0; padding-top: 0; }
  .notfound { min-height: 50vh; display: grid; align-content: center; }

  .features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
  @media (max-width: 900px) { .features { grid-template-columns: 1fr 1fr; } }
  @media (max-width: 560px) { .features { grid-template-columns: 1fr; } }
  .feature { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 24px; display: grid; gap: 10px; align-content: start; min-width: 0; }
  .feature p { color: var(--fg-2); font-size: 15px; }
  .feature .idx { font-family: var(--mono); font-size: 12px; color: var(--cyan); }
  .feature.featured { border-color: var(--blue); background: linear-gradient(160deg, color-mix(in srgb, var(--blue) 22%, var(--panel)), var(--panel) 60%); }

  .follow { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 24px; background: var(--panel); border: 1px solid var(--line); border-radius: 20px; padding: clamp(24px, 4vw, 40px); }
  .follow > div:first-child { display: grid; gap: 12px; max-width: 560px; }
  .follow p { color: var(--fg-2); }

  .req-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; margin: 0; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: var(--panel); }
  @media (max-width: 640px) { .req-list { grid-template-columns: 1fr; } }
  .req-list div { padding: 18px 22px; border-bottom: 1px solid var(--line); display: grid; gap: 4px; }
  .req-list dt { font-size: 13px; color: var(--fg-2); }
  .req-list dd { margin: 0; font-family: var(--mono); font-size: 15px; }

  .prose { max-width: 780px; display: grid; gap: 14px; }
  .prose h2 { font-size: 20px; margin-top: 18px; }
  .prose p, .prose li { color: var(--fg-2); }
  .prose ul { margin: 0; padding-left: 20px; display: grid; gap: 6px; }
  .prose a, .consent a { color: var(--cyan); text-decoration: underline; text-underline-offset: 2px; }

  /* Форма */
  .contact-copy a code:hover { color: var(--cyan); }
  .req-mark { color: var(--cyan); }
  .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
  .lead-form { position: relative; }
  .err { color: #ff6b6b; font-size: 12px; }
  :root[data-theme="light"] .err { color: #c62828; }
  @media (prefers-color-scheme: light) { :root:not([data-theme="dark"]) .err { color: #c62828; } }
  .field input[aria-invalid="true"] { border-color: #ff6b6b; }
  .toast.is-error { color: #ff6b6b; }
  .lead-form button[disabled] { opacity: .6; cursor: progress; }