/* Design System: Linear (getdesign.md) */
:root {
  --bg-canvas: #010102;
  --bg-surface: #0f1011;
  --bg-card: #141516;
  --bg-card-hover: #1c1d1f;
  --border-hairline: #23252a;
  --border-focus: #5e6ad2;
  --text-ink: #f7f8f8;
  --text-body: #d0d6e0;
  --text-muted: #8a8f98;
  --accent-primary: #5e6ad2;
  --btn-primary-bg: #5e6ad2;
  --btn-primary-text: #ffffff;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}
body { background: var(--bg-canvas); color: var(--text-body); font-family: var(--font-sans); margin: 0; line-height: 1.6; }
.site-header { border-bottom: 1px solid var(--border-hairline); background: rgba(1,1,2,0.88); backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 100; }
.nav { display: flex; align-items: center; justify-content: space-between; max-width: 1120px; margin: 0 auto; padding: 16px 20px; }
.logo { font-size: 19px; font-weight: 700; letter-spacing: -0.03em; color: var(--text-ink); text-decoration: none; }
.logo span { color: var(--accent-primary); }
.nav-links a { color: var(--text-muted); text-decoration: none; margin-left: 22px; font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--text-ink); }
.hero { padding: 84px 20px 64px; max-width: 1040px; margin: 0 auto; text-align: center; }
.badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(94,106,210,0.12); border: 1px solid rgba(94,106,210,0.3); color: #9aa5ff; padding: 6px 14px; border-radius: 999px; font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; font-family: var(--font-mono); margin-bottom: 24px; }
.hero h1 { font-size: clamp(38px, 6vw, 64px); font-weight: 800; letter-spacing: -0.04em; color: var(--text-ink); margin: 0 0 20px; line-height: 1.08; }
.hero p.intro { font-size: clamp(17px, 2.2vw, 20px); color: var(--text-body); max-width: 760px; margin: 0 auto 36px; }
.actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }
.button { display: inline-flex; align-items: center; justify-content: center; padding: 13px 26px; border-radius: 8px; font-size: 14px; font-weight: 600; text-decoration: none; cursor: pointer; border: none; transition: transform 0.1s, opacity 0.15s; }
.button.primary { background: var(--btn-primary-bg); color: var(--btn-primary-text); }
.button.primary:hover { opacity: 0.92; transform: translateY(-1px); }
.button.secondary { background: var(--bg-card); color: var(--text-ink); border: 1px solid var(--border-hairline); }
.button.secondary:hover { background: var(--bg-card-hover); border-color: #3b3d44; }
.section { padding: 80px 20px; border-top: 1px solid var(--border-hairline); }
.wrap { max-width: 1080px; margin: 0 auto; }
.eyebrow { font-size: 11px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent-primary); font-family: var(--font-mono); margin-bottom: 12px; }
.section-head h2 { font-size: clamp(28px, 4vw, 42px); font-weight: 700; letter-spacing: -0.03em; color: var(--text-ink); margin: 0 0 16px; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-top: 40px; }
.card { background: var(--bg-card); border: 1px solid var(--border-hairline); border-radius: 10px; padding: 28px; }
.card:hover { border-color: #3a3d45; }
.card h3 { font-size: 19px; font-weight: 700; color: var(--text-ink); margin: 0 0 10px; }
.card p { margin: 0; color: var(--text-body); font-size: 14px; }
.player-box { background: #000000; border: 1px solid var(--border-hairline); border-radius: 10px; overflow: hidden; margin-top: 32px; box-shadow: 0 20px 50px rgba(0,0,0,0.6); }
video { width: 100%; display: block; aspect-ratio: 4/3; }
.calc-box { background: var(--bg-card); border: 1px solid var(--border-hairline); border-radius: 10px; padding: 32px; max-width: 580px; margin: 30px auto 0; }
.calc-row { display: flex; justify-content: space-between; align-items: center; padding: 14px 0; border-bottom: 1px solid var(--border-hairline); }
.counter { display: flex; align-items: center; gap: 8px; }
.counter button { width: 34px; height: 34px; background: var(--bg-surface); border: 1px solid var(--border-hairline); color: var(--text-ink); border-radius: 6px; font-size: 16px; cursor: pointer; }
.counter input { width: 50px; text-align: center; background: var(--bg-surface); border: 1px solid var(--border-hairline); color: var(--text-ink); border-radius: 6px; padding: 6px; font-size: 15px; }
.calc-total { display: flex; justify-content: space-between; align-items: center; margin-top: 24px; font-size: 20px; font-weight: 700; color: var(--text-ink); }
.specs-table { width: 100%; border-collapse: collapse; margin-top: 24px; font-size: 13px; }
.specs-table th, .specs-table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--border-hairline); }
.specs-table th { color: var(--text-muted); font-family: var(--font-mono); width: 35%; }
.specs-table td { color: var(--text-ink); font-weight: 500; }
.form-box { background: var(--bg-card); border: 1px solid var(--border-hairline); border-radius: 10px; padding: 36px; max-width: 640px; margin: 30px auto 0; }
.field { margin-bottom: 20px; text-align: left; }
.field label { display: block; font-size: 13px; font-weight: 600; color: var(--text-ink); margin-bottom: 8px; }
.field input, .field select, .field textarea { width: 100%; box-sizing: border-box; background: var(--bg-surface); border: 1px solid var(--border-hairline); color: var(--text-ink); padding: 11px 13px; border-radius: 6px; font-size: 14px; outline: none; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--accent-primary); }
details { background: var(--bg-card); border: 1px solid var(--border-hairline); border-radius: 8px; margin-bottom: 10px; padding: 16px 20px; text-align: left; }
summary { font-weight: 600; color: var(--text-ink); cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; font-size: 15px; }
summary::after { content: "+"; font-size: 16px; color: var(--accent-primary); }
details[open] summary::after { content: "−"; }
details p { margin: 12px 0 0; color: var(--text-body); font-size: 14px; }
.footer { border-top: 1px solid var(--border-hairline); padding: 40px 20px; text-align: center; font-size: 13px; color: var(--text-muted); }
.footer a { color: var(--text-body); text-decoration: none; margin: 0 10px; }
.footer a:hover { color: var(--text-ink); }