:root {
    --bg: #0e1113; --surface: #171b1f; --line: #2c3339; --text: #e6e8ea; --muted: #9aa3ab;
    --faint: #4a545d; --accent: #7cffb2; --ink: #7cffb2; --on-accent: #0e1113; --warn: #ffb547;
    --mono: 'JetBrains Mono', ui-monospace, monospace;
  }
  html.theme-light {
    --bg: #f3f5f6; --surface: #ffffff; --line: #d5dbe0; --text: #0e1113; --muted: #56616b;
    --faint: #b9c2ca; --accent: #19c37d; --ink: #0a7a45; --on-accent: #0e1113; --warn: #9a5b00;
  }
  * { box-sizing: border-box; }
  body { margin: 0; background: var(--bg); color: var(--text); font-family: 'Space Grotesk', system-ui, sans-serif; }
  a { color: inherit; text-decoration: none; }
  a:hover { color: var(--ink); }
  a:focus-visible, button:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
  .wrap { max-width: 1312px; margin: 0 auto; padding: 0 24px; }
  .mono { font-family: var(--mono); }

  nav.top { border-bottom: 1px solid var(--line); }
  nav.top .wrap { height: 80px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
  .brand { display: flex; align-items: center; gap: 12px; }
  .brand b { font-family: var(--mono); font-size: 22px; letter-spacing: .06em; }
  .links { display: flex; align-items: center; gap: 24px; font-family: var(--mono); font-size: 14px; }
  .theme-btn { width: 44px; height: 44px; border-radius: 8px; border: 1px solid var(--line); background: transparent; color: var(--text); display: flex; align-items: center; justify-content: center; cursor: pointer; }
  .theme-btn .sun { display: block; } .theme-btn .moon { display: none; }
  html.theme-light .theme-btn .sun { display: none; } html.theme-light .theme-btn .moon { display: block; }
  .btn { display: inline-block; background: var(--accent); color: var(--on-accent); font-weight: 700; border-radius: 8px; padding: 12px 20px; }
  .btn:hover { color: var(--on-accent); filter: brightness(1.05); }
  .btn.lg { padding: 18px 28px; font-size: 18px; }
  .btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); font-weight: 500; }

  .hero { padding: 88px 0 40px; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 26px; }
  .kicker { font-family: var(--mono); font-size: 14px; color: var(--ink); letter-spacing: .18em; }
  h1 { margin: 0; font-size: clamp(44px, 7vw, 88px); line-height: .98; letter-spacing: -.035em; max-width: 1100px; text-wrap: balance; }
  .lead { margin: 0; font-size: 21px; line-height: 1.55; color: var(--muted); max-width: 760px; }
  .row { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; }

  .panel { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 32px; display: flex; flex-direction: column; gap: 22px; }
  .panel-head { display: flex; justify-content: space-between; gap: 12px; font-family: var(--mono); font-size: 13px; color: var(--muted); flex-wrap: wrap; }
  .wave { height: 180px; display: flex; align-items: center; gap: 2px; overflow: hidden; }
  .wave i { flex: 0 0 4px; border-radius: 1px; background: var(--faint); }
  .wave i.out { background: var(--accent); }
  .meters { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
  .meter { background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 18px; }
  .meter small { display: block; font-family: var(--mono); font-size: 12px; color: var(--muted); }
  .meter strong { display: block; font-family: var(--mono); font-size: 28px; }
  .meter strong .to { color: var(--ink); } .meter strong .arrow { color: var(--muted); } .meter strong .warn { color: var(--warn); }

  section.block { padding-top: 88px; }  
  h2 { margin: 0 0 32px; font-size: 52px; letter-spacing: -.02em; }
  .chain { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
  .card { border: 1px solid var(--line); background: var(--surface); border-radius: 12px; padding: 28px; display: flex; flex-direction: column; gap: 12px; }
  .card .n { font-family: var(--mono); font-size: 13px; color: var(--ink); }
  .card h3 { margin: 0; font-size: 24px; }
  .card p { margin: 0; font-size: 16px; line-height: 1.6; color: var(--muted); }

  .report { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 56px; display: grid; grid-template-columns: 5fr 1fr 6fr; }
  .report .copy { display: flex; flex-direction: column; gap: 18px; }
  .report .copy h2 { margin: 0; font-size: 48px; line-height: 1.02; }
  .report .copy p { margin: 0; font-size: 18px; line-height: 1.6; color: var(--muted); }
  table.rep { grid-column: 3; width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 14px; background: var(--bg); border: 1px solid var(--line); border-radius: 12px; }
  table.rep th { text-align: left; font-weight: 400; font-size: 12px; color: var(--muted); padding: 16px 20px 10px; }
  table.rep td { padding: 12px 20px; border-top: 1px solid var(--line); }
  table.rep td.in { color: var(--muted); } table.rep td.ok { color: var(--ink); }

  .packs { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
  .pack { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); align-items: center; padding: 22px 28px; border-top: 1px solid var(--line); font-size: 20px; }
  .pack.head { border-top: 0; background: var(--surface); font-family: var(--mono); font-size: 13px; color: var(--muted); padding: 16px 28px; }
  .pack.hot { background: var(--surface); }
  .pack .tag { font-family: var(--mono); font-size: 12px; color: var(--ink); margin-left: 8px; }
  .pack .price, .pack .per { font-family: var(--mono); } .pack .per { color: var(--muted); }
  .pack a { justify-self: end; border: 1px solid var(--line); padding: 10px 18px; border-radius: 6px; font-size: 16px; font-weight: 700; }
  .pack.hot a { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
  .sub { display: flex; justify-content: space-between; align-items: end; gap: 16px; flex-wrap: wrap; margin-bottom: 28px; }
  .sub h2 { margin: 0; } .sub p { margin: 0; font-size: 17px; color: var(--muted); }

  .faq { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; padding-bottom: 72px; }
  .faq div { border-top: 1px solid var(--line); padding-top: 18px; }
  .faq h3 { margin: 0 0 8px; font-size: 20px; } .faq p { margin: 0; font-size: 16px; line-height: 1.6; color: var(--muted); }

  footer { border-top: 1px solid var(--line); }
  footer .wrap { padding: 36px 24px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-family: var(--mono); font-size: 13px; color: var(--muted); }
  footer .wrap div:last-child, footer .wrap .guides { display: flex; gap: 24px; flex-wrap: wrap; }

  @media (max-width: 480px) { .links a.hide-xs { display: none; } }
  @media (max-width: 900px) {
    .links a.hide-sm { display: none; }
    .links { gap: 10px; }
    .panel { padding: 18px; }
    .meter strong { font-size: 22px; }
    .meters { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .chain, .faq { grid-template-columns: minmax(0, 1fr); }
    .report { grid-template-columns: minmax(0, 1fr); padding: 18px; gap: 24px; }
    table.rep { font-size: 12px; } table.rep th, table.rep td { padding: 10px 8px; }
    table.rep { grid-column: 1; }
    .pack { grid-template-columns: 1.4fr 1fr 1fr; padding: 18px 16px; font-size: 17px; }
    .pack .per { display: none; }
    h2 { font-size: 36px; } .report .copy h2 { font-size: 34px; }
  }