:root {
  color-scheme: dark;
  --bg: #071018;
  --ink: #f5fbff;
  --muted: #9fb2c2;
  --panel: rgba(11, 27, 39, .86);
  --line: rgba(108, 232, 255, .18);
  --cyan: #62e6ff;
  --lime: #bcff5f;
  --pink: #ff5ca8;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-height: 100vh; color: var(--ink); background: radial-gradient(circle at 12% 12%, rgba(98,230,255,.16), transparent 29rem), radial-gradient(circle at 88% 28%, rgba(255,92,168,.13), transparent 27rem), var(--bg); font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif; line-height: 1.8; }
a { color: var(--cyan); }
.wrap { width: min(940px, calc(100% - 40px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid var(--line); background: rgba(7,16,24,.88); backdrop-filter: blur(18px); }
.nav { min-height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { color: var(--ink); text-decoration: none; font-weight: 950; letter-spacing: .08em; }
.nav-links { display: flex; flex-wrap: wrap; gap: 18px; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: .92rem; }
.nav-links a:hover { color: var(--ink); }
.hero { padding: 92px 0 64px; text-align: center; }
.eyebrow { margin: 0 0 12px; color: var(--lime); font-weight: 900; letter-spacing: .18em; font-size: .78rem; }
h1 { margin: 0 auto 18px; max-width: 760px; font-size: clamp(2.7rem, 9vw, 6rem); line-height: .98; letter-spacing: -.05em; }
.accent { color: var(--cyan); text-shadow: 0 0 34px rgba(98,230,255,.35); }
.lead { max-width: 650px; margin: 0 auto; color: var(--muted); font-size: clamp(1rem, 2.4vw, 1.22rem); }
.actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button { display: inline-flex; min-height: 48px; align-items: center; padding: 0 21px; border-radius: 14px; background: linear-gradient(135deg, var(--cyan), var(--lime)); color: #071018; text-decoration: none; font-weight: 950; box-shadow: 0 15px 45px rgba(98,230,255,.17); }
.button.secondary { background: transparent; color: var(--ink); border: 1px solid var(--line); box-shadow: none; }
.mode-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; padding-bottom: 28px; }
.mode { position: relative; overflow: hidden; padding: 30px; border: 1px solid var(--line); border-radius: 22px; background: var(--panel); }
.mode::after { content: ""; position: absolute; width: 150px; height: 150px; right: -55px; bottom: -70px; border-radius: 50%; background: var(--glow, var(--cyan)); filter: blur(58px); opacity: .18; }
.mode.rush { --glow: var(--pink); }
.mode.endless { --glow: var(--lime); }
.mode strong { color: var(--glow, var(--cyan)); letter-spacing: .12em; font-size: .76rem; }
.mode h2 { margin: 8px 0 8px; font-size: 1.7rem; }
.mode p { margin: 0; color: var(--muted); }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; padding: 14px 0 76px; }
.feature { padding: 21px; border: 1px solid var(--line); border-radius: 18px; background: rgba(10,23,34,.66); }
.feature h3 { margin: 0 0 6px; }
.feature p { margin: 0; color: var(--muted); }
.legal-page { padding: 60px 0 80px; }
.legal-title { margin: 0 0 8px; font-size: clamp(2rem, 6vw, 3.6rem); line-height: 1.15; }
.updated { margin: 0 0 30px; color: var(--muted); }
.legal-card { padding: clamp(22px,5vw,48px); border: 1px solid var(--line); border-radius: 22px; background: var(--panel); box-shadow: 0 24px 80px rgba(0,0,0,.22); }
.legal-card h2 { margin: 2.1em 0 .6em; color: var(--cyan); font-size: 1.24rem; }
.legal-card h2:first-child { margin-top: 0; }
.legal-card p, .legal-card li, .legal-card dd { color: #dce8ef; }
.legal-card dt { margin-top: 14px; font-weight: 850; }
.legal-card dd { margin-left: 0; }
.notice { padding: 18px; border-left: 4px solid var(--lime); background: rgba(188,255,95,.07); border-radius: 10px; }
.site-footer { padding: 28px 0 44px; border-top: 1px solid var(--line); color: var(--muted); font-size: .88rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 12px; }
@media (max-width: 720px) { .nav { align-items: flex-start; flex-direction: column; padding: 14px 0; } .nav-links { gap: 12px; } .mode-grid, .features { grid-template-columns: 1fr; } .hero { padding-top: 62px; } }