/* Design System: Stripe (getdesign.md) */
:root {
  --bg-canvas: #f6f9fc;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #fcfdfe;
  --border-hairline: #e3e8ee;
  --border-focus: #533afd;
  --text-ink: #0d253d;
  --text-body: #425466;
  --text-muted: #64748d;
  --accent-primary: #533afd;
  --btn-primary-bg: #533afd;
  --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(255,255,255,0.92); 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: 18px 20px; }
.logo { font-size: 21px; font-weight: 800; letter-spacing: -0.04em; color: var(--text-ink); text-decoration: none; }
.logo span { color: var(--accent-primary); }
.nav-links a { color: var(--text-body); text-decoration: none; margin-left: 24px; font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--text-ink); }
.hero { padding: 90px 20px 70px; max-width: 1040px; margin: 0 auto; text-align: center; }
.badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(83,58,253,0.08); border: 1px solid rgba(83,58,253,0.22); color: var(--accent-primary); padding: 6px 14px; border-radius: 999px; font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; font-family: var(--font-mono); margin-bottom: 24px; }
.hero h1 { font-size: clamp(38px, 6vw, 62px); font-weight: 800; letter-spacing: -0.04em; color: var(--text-ink); margin: 0 0 22px; line-height: 1.1; }
.hero p.intro { font-size: clamp(17px, 2.2vw, 20px); color: var(--text-body); max-width: 740px; 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: 14px 28px; border-radius: 999px; font-size: 15px; font-weight: 600; text-decoration: none; cursor: pointer; border: none; transition: transform 0.1s, box-shadow 0.15s; }
.button.primary { background: var(--btn-primary-bg); color: var(--btn-primary-text); box-shadow: 0 4px 14px rgba(83,58,253,0.28); }
.button.primary:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(83,58,253,0.36); }
.button.secondary { background: var(--bg-surface); color: var(--text-ink); border: 1px solid var(--border-hairline); }
.button.secondary:hover { background: #f8fafc; }
.section { padding: 80px 20px; border-top: 1px solid var(--border-hairline); }
.wrap { max-width: 1080px; margin: 0 auto; }
.eyebrow { font-size: 12px; font-weight: 700; letter-spacing: 0.12em; 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: 24px; margin-top: 40px; }
.card { background: var(--bg-surface); border: 1px solid var(--border-hairline); border-radius: 12px; padding: 32px; box-shadow: 0 4px 12px rgba(13,37,61,0.04); transition: transform 0.15s, box-shadow 0.15s; }
.card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(13,37,61,0.08); }
.card h3 { font-size: 20px; font-weight: 700; color: var(--text-ink); margin: 0 0 12px; }
.card p { margin: 0; color: var(--text-body); font-size: 15px; }
.player-box { background: #0d253d; border: 1px solid var(--border-hairline); border-radius: 14px; overflow: hidden; margin-top: 32px; box-shadow: 0 16px 40px rgba(13,37,61,0.12); }
video { width: 100%; display: block; aspect-ratio: 4/3; }
.calc-box { background: var(--bg-surface); border: 1px solid var(--border-hairline); border-radius: 14px; padding: 36px; max-width: 580px; margin: 30px auto 0; box-shadow: 0 4px 16px rgba(13,37,61,0.05); }
.calc-row { display: flex; justify-content: space-between; align-items: center; padding: 16px 0; border-bottom: 1px solid var(--border-hairline); }
.counter { display: flex; align-items: center; gap: 10px; }
.counter button { width: 36px; height: 36px; background: var(--bg-canvas); border: 1px solid var(--border-hairline); color: var(--text-ink); border-radius: 8px; font-size: 18px; cursor: pointer; }
.counter input { width: 50px; text-align: center; background: var(--bg-canvas); border: 1px solid var(--border-hairline); color: var(--text-ink); border-radius: 8px; padding: 6px; font-size: 16px; }
.calc-total { display: flex; justify-content: space-between; align-items: center; margin-top: 24px; font-size: 22px; font-weight: 700; color: var(--text-ink); }
.specs-table { width: 100%; border-collapse: collapse; margin-top: 24px; font-size: 14px; }
.specs-table th, .specs-table td { text-align: left; padding: 14px 16px; 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-surface); border: 1px solid var(--border-hairline); border-radius: 14px; padding: 40px; max-width: 640px; margin: 30px auto 0; box-shadow: 0 4px 20px rgba(13,37,61,0.06); }
.field { margin-bottom: 20px; text-align: left; }
.field label { display: block; font-size: 14px; 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-canvas); border: 1px solid var(--border-hairline); color: var(--text-ink); padding: 12px 14px; border-radius: 8px; font-size: 15px; outline: none; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--accent-primary); }
details { background: var(--bg-surface); border: 1px solid var(--border-hairline); border-radius: 10px; margin-bottom: 12px; padding: 18px 22px; 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; }
summary::after { content: "+"; font-size: 18px; color: var(--accent-primary); }
details[open] summary::after { content: "−"; }
details p { margin: 12px 0 0; color: var(--text-body); font-size: 15px; }
.footer { border-top: 1px solid var(--border-hairline); padding: 40px 20px; text-align: center; font-size: 14px; color: var(--text-muted); }
.footer a { color: var(--text-body); text-decoration: none; margin: 0 10px; }
.footer a:hover { color: var(--text-ink); }