@layer reset, base, components, layout, responsive;

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body, h1, h2, h3, p, ul, dl, dd { margin: 0; }
  ul { padding: 0; list-style: none; }
  img, svg { display: block; max-width: 100%; }
  button, a { font: inherit; }
}

@layer base {
  :root {
    color-scheme: dark;
    --bg: #050806;
    --bg-soft: #07110d;
    --surface: rgba(12, 22, 17, 0.78);
    --surface-solid: #0a130f;
    --surface-raised: #0d1913;
    --line: rgba(152, 255, 201, 0.13);
    --line-strong: rgba(89, 244, 157, 0.34);
    --text: #edf7f1;
    --text-soft: #a8bbb0;
    --text-dim: #6f8378;
    --accent: #56ef9f;
    --accent-bright: #8affbd;
    --accent-deep: #1fb86a;
    --warning: #e8c76b;
    --danger-soft: #d4a4a4;
    --radius-sm: 10px;
    --radius: 18px;
    --radius-lg: 28px;
    --shadow: 0 26px 80px rgba(0, 0, 0, 0.34);
    --container: min(1180px, calc(100% - 40px));
  }

  body {
    min-width: 320px;
    background:
      radial-gradient(circle at 18% 4%, rgba(43, 196, 110, 0.12), transparent 28rem),
      radial-gradient(circle at 86% 22%, rgba(43, 196, 110, 0.06), transparent 26rem),
      var(--bg);
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.65;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
  }

  body::before {
    position: fixed;
    z-index: -1;
    inset: 0;
    content: "";
    opacity: 0.34;
    background-image:
      linear-gradient(rgba(92, 239, 159, 0.035) 1px, transparent 1px),
      linear-gradient(90deg, rgba(92, 239, 159, 0.035) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: linear-gradient(to bottom, black, transparent 88%);
  }

  a { color: inherit; text-decoration: none; }
  button { color: inherit; }

  :focus-visible {
    outline: 3px solid var(--accent-bright);
    outline-offset: 4px;
  }

  ::selection { color: #031008; background: var(--accent); }

  .container { width: var(--container); margin-inline: auto; }
  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .skip-link {
    position: fixed;
    z-index: 100;
    top: 12px;
    left: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    color: #031008;
    background: var(--accent-bright);
    transform: translateY(-150%);
    transition: transform 150ms ease;
  }

  .skip-link:focus { transform: translateY(0); }
}

@layer components {
  .brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 760; letter-spacing: -0.03em; }
  .brand-mark {
    display: grid;
    width: 36px;
    height: 36px;
    place-items: center;
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    color: #04100a;
    background: linear-gradient(145deg, var(--accent-bright), var(--accent-deep));
    box-shadow: 0 0 30px rgba(86, 239, 159, 0.15);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 12px;
    font-weight: 900;
    letter-spacing: -0.08em;
  }
  .brand-name { font-size: 18px; }
  .brand-name span { color: var(--accent); }

  .button {
    display: inline-flex;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
    border: 1px solid transparent;
    border-radius: 12px;
    font-weight: 720;
    line-height: 1;
    transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, box-shadow 160ms ease;
  }
  .button:not(:disabled):hover { transform: translateY(-2px); }
  .button-primary {
    color: #031109;
    background: linear-gradient(135deg, var(--accent-bright), var(--accent-deep));
    box-shadow: 0 12px 34px rgba(43, 210, 117, 0.17);
  }
  .button-primary:hover { box-shadow: 0 16px 42px rgba(43, 210, 117, 0.25); }
  .button-secondary { border-color: var(--line); background: rgba(11, 22, 16, 0.7); }
  .button-secondary:hover { border-color: var(--line-strong); background: var(--surface-raised); }

  .eyebrow, .section-label {
    color: var(--accent);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 12px;
    font-weight: 760;
    letter-spacing: 0.13em;
    text-transform: uppercase;
  }
  .eyebrow { display: inline-flex; align-items: center; gap: 9px; }
  .status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 16px var(--accent); }

  .terminal-card {
    overflow: hidden;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-lg);
    background: linear-gradient(160deg, rgba(16, 32, 23, 0.92), rgba(5, 10, 7, 0.96));
    box-shadow: var(--shadow), inset 0 1px rgba(255, 255, 255, 0.04);
  }
  .terminal-bar { display: flex; min-height: 54px; align-items: center; gap: 7px; padding: 0 20px; border-bottom: 1px solid var(--line); }
  .terminal-bar > span { width: 8px; height: 8px; border-radius: 50%; background: rgba(166, 196, 178, 0.34); }
  .terminal-bar > span:first-child { background: var(--accent-deep); }
  .terminal-bar p { margin-left: auto; color: var(--text-dim); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 10px; letter-spacing: 0.15em; }
  .terminal-body { padding: 24px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
  .terminal-body > p:first-child { margin-bottom: 22px; color: var(--text-soft); font-size: 13px; }
  .prompt { color: var(--accent); }
  .route-line { display: grid; grid-template-columns: 28px 1fr auto; align-items: center; gap: 13px; padding: 15px 0; border-top: 1px solid var(--line); }
  .route-index { color: var(--text-dim); font-size: 11px; }
  .route-line strong { display: block; font-size: 14px; }
  .route-line small { display: block; margin-top: 3px; color: var(--text-dim); font-size: 11px; }
  .route-weight { color: var(--accent-bright); font-weight: 800; }
  .terminal-success { margin-top: 18px; color: var(--accent); font-size: 12px; }

  .model-card, .plan-card, .capability-grid article, .formula-card, .example-card {
    border: 1px solid var(--line);
    background: linear-gradient(160deg, rgba(13, 25, 19, 0.84), rgba(7, 13, 10, 0.86));
    box-shadow: inset 0 1px rgba(255, 255, 255, 0.025);
  }

  .model-card { position: relative; padding: 28px; border-radius: var(--radius); transition: transform 180ms ease, border-color 180ms ease; }
  .model-card:hover { transform: translateY(-4px); border-color: var(--line-strong); }
  .model-card-featured::before {
    position: absolute;
    inset: -1px -1px auto;
    height: 2px;
    border-radius: var(--radius) var(--radius) 0 0;
    content: "";
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
  }
  .model-topline, .plan-name { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
  .model-number { color: var(--text-dim); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; }
  .weight-badge, .target-badge, .verified-badge {
    display: inline-flex;
    padding: 5px 9px;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    color: var(--accent-bright);
    background: rgba(70, 229, 139, 0.07);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 10px;
    font-weight: 750;
    letter-spacing: 0.04em;
    text-transform: uppercase;
  }
  .model-card h3 { margin-top: 44px; font-size: 30px; letter-spacing: -0.045em; }
  .model-source { margin-top: 3px; color: var(--accent); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }
  .model-card > p:not(.model-source) { min-height: 52px; margin-top: 22px; color: var(--text-soft); }
  .model-meta { display: grid; gap: 10px; margin-top: 28px; }
  .model-meta div { display: flex; justify-content: space-between; gap: 16px; padding-top: 10px; border-top: 1px solid var(--line); }
  .model-meta dt { color: var(--text-dim); font-size: 13px; }
  .model-meta dd { color: var(--text-soft); font-size: 13px; text-align: right; }

  .notice { display: flex; align-items: flex-start; gap: 14px; margin-top: 20px; padding: 18px 20px; border: 1px solid rgba(232, 199, 107, 0.18); border-radius: var(--radius-sm); color: #d9d4c4; background: rgba(232, 199, 107, 0.045); }
  .notice-icon { display: grid; flex: 0 0 25px; height: 25px; place-items: center; border: 1px solid rgba(232, 199, 107, 0.32); border-radius: 50%; color: var(--warning); font-family: ui-monospace, monospace; font-weight: 800; }
  .notice p { font-size: 14px; }

  .plan-card { position: relative; display: flex; min-width: 0; flex-direction: column; padding: 28px; border-radius: var(--radius); }
  .plan-card-featured { border-color: var(--line-strong); background: linear-gradient(160deg, rgba(16, 35, 24, 0.96), rgba(7, 15, 10, 0.92)); box-shadow: 0 20px 60px rgba(16, 116, 64, 0.11); }
  .popular-label { position: absolute; top: -13px; right: 24px; padding: 5px 10px; border-radius: 999px; color: #031008; background: var(--accent); font-size: 10px; font-weight: 820; letter-spacing: 0.08em; text-transform: uppercase; }
  .plan-name h3 { font-size: 24px; letter-spacing: -0.035em; }
  .plan-name span { color: var(--text-dim); font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; }
  .price { display: flex; align-items: baseline; margin-top: 28px; font-size: clamp(38px, 4vw, 52px); font-weight: 790; letter-spacing: -0.06em; line-height: 1; }
  .price > span { margin-right: 3px; color: var(--accent); font-size: 20px; vertical-align: top; }
  .price small { margin-left: 8px; color: var(--text-dim); font-size: 12px; font-weight: 550; letter-spacing: 0; }
  .quota { display: flex; align-items: baseline; gap: 8px; margin: 24px 0 20px; padding: 14px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: rgba(0, 0, 0, 0.15); }
  .quota strong { color: var(--accent-bright); font-size: 21px; }
  .quota span { color: var(--text-dim); font-size: 12px; }
  .plan-card ul { display: grid; gap: 11px; margin-bottom: 26px; color: var(--text-soft); font-size: 13px; }
  .plan-card li { position: relative; padding-left: 19px; }
  .plan-card li::before { position: absolute; left: 0; content: "✓"; color: var(--accent); font-weight: 800; }
  .plan-button { width: 100%; margin-top: auto; border-color: var(--line); color: var(--text-dim); background: rgba(255, 255, 255, 0.025); cursor: not-allowed; }
  .plan-disclaimer { margin-top: 20px; color: var(--text-dim); font-size: 13px; text-align: center; }

  .table-shell { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(8, 16, 11, 0.76); box-shadow: var(--shadow); }
  table { width: 100%; min-width: 740px; border-collapse: collapse; font-variant-numeric: tabular-nums; }
  caption { padding: 18px 22px; color: var(--text-dim); font-size: 12px; text-align: left; }
  th, td { padding: 19px 22px; border-top: 1px solid var(--line); text-align: left; }
  thead th { color: var(--text-soft); background: rgba(86, 239, 159, 0.035); font-size: 13px; }
  thead th span, thead th small { display: block; }
  thead th small { margin-top: 3px; color: var(--text-dim); font-size: 10px; font-weight: 500; }
  tbody th { font-size: 14px; }
  tbody td { color: var(--text-soft); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }
  tbody tr:hover { background: rgba(86, 239, 159, 0.025); }
  .not-included { color: var(--danger-soft); }
  .table-help { margin-top: 12px; color: var(--text-dim); font-size: 12px; }

  .formula-card, .example-card { padding: 25px; border-radius: var(--radius); }
  .formula-card > div, .example-card > div { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 12px 0; border-bottom: 1px solid var(--line); }
  .formula-card span, .example-card span { color: var(--text-soft); font-size: 14px; }
  .formula-card strong, .example-card strong { color: var(--accent-bright); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
  .formula-card p { margin-top: 18px; color: var(--text-dim); font-size: 12px; }
  .example-label { margin-bottom: 5px; color: var(--accent); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 11px; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; }
  .example-total { border-bottom: 0 !important; }
  .example-total span, .example-total strong { color: var(--text); font-weight: 800; }

  .capability-grid article { padding: 26px; border-radius: var(--radius); }
  .capability-icon { display: block; color: var(--accent); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; }
  .capability-grid h3 { margin-top: 30px; font-size: 21px; }
  .capability-grid p { min-height: 78px; margin: 10px 0 20px; color: var(--text-soft); font-size: 14px; }
  .verified-badge { border-color: rgba(138, 255, 189, 0.55); color: #031008; background: var(--accent-bright); }

  .faq-list { border-top: 1px solid var(--line); }
  details { border-bottom: 1px solid var(--line); }
  summary { position: relative; padding: 22px 40px 22px 0; cursor: pointer; font-weight: 700; list-style: none; }
  summary::-webkit-details-marker { display: none; }
  summary::after { position: absolute; top: 20px; right: 4px; content: "+"; color: var(--accent); font-family: ui-monospace, monospace; font-size: 22px; font-weight: 400; }
  details[open] summary::after { content: "−"; }
  details p { max-width: 690px; padding: 0 42px 22px 0; color: var(--text-soft); font-size: 14px; }
}

@layer layout {
  .site-header { position: sticky; z-index: 50; top: 0; border-bottom: 1px solid rgba(152, 255, 201, 0.08); background: rgba(5, 8, 6, 0.83); backdrop-filter: blur(18px); }
  .header-inner { display: flex; min-height: 72px; align-items: center; justify-content: space-between; gap: 24px; }
  .site-nav { display: flex; align-items: center; gap: 26px; color: var(--text-soft); font-size: 13px; font-weight: 650; }
  .site-nav a:not(.nav-status):hover { color: var(--text); }
  .nav-status { min-height: 38px; display: inline-flex; align-items: center; padding: 0 14px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--accent-bright); background: rgba(86, 239, 159, 0.055); }
  .menu-toggle { display: none; width: 44px; height: 44px; padding: 0; border: 1px solid var(--line); border-radius: 11px; background: var(--surface); }
  .menu-toggle span:not(.sr-only) { display: block; width: 18px; height: 1px; margin: 5px auto; background: var(--text); }

  .hero { padding: 104px 0 0; }
  .hero-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.72fr); align-items: center; gap: clamp(50px, 8vw, 110px); }
  .hero h1 { max-width: 760px; margin-top: 22px; font-size: clamp(50px, 7.5vw, 94px); font-weight: 790; letter-spacing: -0.075em; line-height: 0.96; }
  .hero h1 span { color: transparent; background: linear-gradient(100deg, var(--accent-bright), var(--accent-deep)); background-clip: text; -webkit-background-clip: text; }
  .hero-lede { max-width: 680px; margin-top: 28px; color: var(--text-soft); font-size: clamp(17px, 2vw, 20px); line-height: 1.6; }
  .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
  .hero-note { margin-top: 16px; color: var(--text-dim); font-size: 12px; }
  .proof-strip { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 96px; border-block: 1px solid var(--line); }
  .proof-strip div { display: flex; min-height: 108px; flex-direction: column; justify-content: center; padding: 20px 24px; border-right: 1px solid var(--line); }
  .proof-strip div:last-child { border-right: 0; }
  .proof-strip strong { color: var(--accent-bright); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 26px; }
  .proof-strip span { margin-top: 4px; color: var(--text-dim); font-size: 12px; }

  .section { padding: 112px 0; scroll-margin-top: 70px; }
  .section-alt { border-block: 1px solid rgba(152, 255, 201, 0.07); background: rgba(7, 16, 11, 0.58); }
  .section-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 0.58fr); align-items: end; gap: 50px; margin-bottom: 44px; }
  .section-heading h2, .usage-grid h2, .faq-grid h2, .closing h2 { margin-top: 10px; font-size: clamp(36px, 5vw, 58px); letter-spacing: -0.06em; line-height: 1.05; }
  .section-heading > p { color: var(--text-soft); }
  .model-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
  .plan-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
  .usage-grid { display: grid; grid-template-columns: 0.9fr 0.65fr 0.75fr; align-items: start; gap: 22px; }
  .usage-lede { max-width: 580px; margin-top: 20px; color: var(--text-soft); }
  .capability-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .faq-grid { display: grid; grid-template-columns: 0.62fr 1fr; align-items: start; gap: clamp(60px, 9vw, 130px); }
  .faq-grid > div:first-child > p:last-child { max-width: 430px; margin-top: 20px; color: var(--text-soft); }
  .closing { padding: 86px 0; border-top: 1px solid var(--line); background: radial-gradient(circle at 20% 50%, rgba(58, 223, 129, 0.09), transparent 35rem); }
  .closing-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
  .closing p:not(.section-label) { margin-top: 14px; color: var(--text-soft); }
  .site-footer { padding: 34px 0 44px; border-top: 1px solid var(--line); }
  .footer-inner { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 24px; color: var(--text-dim); font-size: 12px; }
  .footer-note { justify-self: end; text-align: right; }
  .brand-footer .brand-mark { width: 30px; height: 30px; font-size: 10px; }
  .brand-footer .brand-name { font-size: 15px; }

  .error-page { display: grid; min-height: 100vh; place-items: center; padding: 40px 0; }
  .error-inner { max-width: 760px; }
  .error-code { margin-top: 70px; color: var(--accent); font: 700 12px/1.4 ui-monospace, monospace; letter-spacing: 0.12em; }
  .error-inner h1 { max-width: 700px; margin-top: 16px; font-size: clamp(46px, 9vw, 90px); letter-spacing: -0.07em; line-height: 0.98; }
  .error-inner > p:not(.error-code) { max-width: 520px; margin: 24px 0 34px; color: var(--text-soft); font-size: 18px; }
}

@layer responsive {
  @media (max-width: 1050px) {
    .plan-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
    .usage-grid { grid-template-columns: 1fr 1fr; }
    .usage-grid > div:first-child { grid-column: 1 / -1; }
  }

  @media (max-width: 820px) {
    :root { --container: min(100% - 30px, 700px); }
    .js .menu-toggle { display: block; }
    .js .site-nav {
      position: absolute;
      top: calc(100% + 1px);
      right: 15px;
      left: 15px;
      display: none;
      align-items: stretch;
      padding: 14px;
      border: 1px solid var(--line);
      border-radius: 0 0 var(--radius) var(--radius);
      background: rgba(7, 14, 10, 0.98);
      box-shadow: var(--shadow);
    }
    .js .site-nav[data-open="true"] { display: grid; }
    .js .site-nav a { display: flex; min-height: 44px; align-items: center; padding: 0 12px; }
    .js .nav-status { justify-content: center; margin-top: 5px; }
    .hero { padding-top: 72px; }
    .hero-grid { grid-template-columns: 1fr; }
    .terminal-card { max-width: 620px; }
    .proof-strip { grid-template-columns: repeat(2, 1fr); margin-top: 70px; }
    .proof-strip div:nth-child(2) { border-right: 0; }
    .proof-strip div:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
    .section { padding: 88px 0; }
    .section-heading { grid-template-columns: 1fr; gap: 18px; }
    .model-grid, .capability-grid { grid-template-columns: 1fr; }
    .model-card > p:not(.model-source), .capability-grid p { min-height: 0; }
    .faq-grid { grid-template-columns: 1fr; gap: 42px; }
    .closing-inner { align-items: flex-start; flex-direction: column; }
    .footer-inner { grid-template-columns: 1fr; text-align: left; }
    .footer-note { justify-self: start; text-align: left; }
  }

  @media (max-width: 600px) {
    :root { --container: min(100% - 24px, 540px); }
    .site-header { backdrop-filter: blur(12px); }
    .header-inner { min-height: 66px; }
    .hero h1 { font-size: clamp(45px, 14vw, 67px); }
    .hero-lede { font-size: 16px; }
    .hero-actions { flex-direction: column; }
    .hero-actions .button { width: 100%; }
    .terminal-body { padding: 18px; }
    .proof-strip { width: 100%; grid-template-columns: 1fr 1fr; }
    .proof-strip div { min-height: 94px; padding: 16px; }
    .proof-strip strong { font-size: 22px; }
    .plan-grid, .usage-grid { grid-template-columns: 1fr; }
    .plan-card { padding: 24px; }
    .price { font-size: 44px; }
    .section-heading h2, .usage-grid h2, .faq-grid h2, .closing h2 { font-size: 38px; }
    .formula-card, .example-card { padding: 20px; }
    .notice { padding: 15px; }
  }

  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
  }
}