:root {
  --bg: #05070b;
  --bg-alt: #0a0e16;
  --panel: #0f1420;
  --panel-2: #131a29;
  --border: rgba(240,246,255,0.08);
  --border-strong: rgba(240,246,255,0.14);
  --text: rgba(240,246,255,0.96);
  --text-dim: rgba(240,246,255,0.68);
  --text-faint: rgba(240,246,255,0.46);
  --cyan: oklch(78% 0.15 198);
  --cyan-strong: oklch(85% 0.14 198);
  --cyan-deep: oklch(42% 0.15 255);
  --gold: oklch(80% 0.14 85);
  --green: oklch(72% 0.14 155);
  --red: oklch(68% 0.18 25);
  --radius: 20px;
  --radius-sm: 12px;
  --max-w: 1180px;
  --shadow: 0 20px 60px rgba(0,0,0,0.45);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- background texture ---------- */
.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60% 45% at 15% 0%, oklch(42% 0.13 220 / 0.35), transparent 60%),
    radial-gradient(50% 40% at 100% 15%, oklch(50% 0.12 260 / 0.22), transparent 60%),
    var(--bg);
}

/* ---------- top nav ---------- */
.topnav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(5,7,11,0.72);
  border-bottom: 1px solid var(--border);
}
.topnav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: var(--max-w);
  margin: 0 auto;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-logo { width: 34px; height: 34px; border-radius: 10px; flex-shrink: 0; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-weight: 800; font-size: 18px; letter-spacing: 0.01em; }
.brand-tag { font-size: 10.5px; color: var(--text-faint); font-weight: 500; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text-dim);
}
.nav-links a:hover { color: var(--text); }

.nav-right { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }

.lang-switch {
  display: flex;
  gap: 2px;
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 3px;
}
.lang-switch button {
  border: none;
  background: transparent;
  color: var(--text-faint);
  font-size: 12.5px;
  font-weight: 700;
  padding: 6px 11px;
  border-radius: 999px;
  cursor: pointer;
  letter-spacing: 0.02em;
}
.lang-switch button.active {
  background: linear-gradient(155deg, var(--cyan) 0%, var(--cyan-deep) 100%);
  color: #06121a;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  width: 40px;
  height: 40px;
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14.5px;
  border: 1px solid var(--border-strong);
  cursor: default;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(155deg, var(--cyan) 0%, var(--cyan-deep) 100%);
  color: #06121a;
  border: none;
  box-shadow: 0 10px 30px oklch(60% 0.15 210 / 0.35);
}
.btn-ghost {
  background: var(--panel);
  color: var(--text);
}
.btn[disabled], .btn.soon {
  opacity: 0.75;
  position: relative;
}
.soon-badge {
  font-size: 9.5px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(240,246,255,0.14);
  padding: 2px 7px;
  border-radius: 999px;
  margin-left: 2px;
}
.store-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- hero banner (decorative illustration) ---------- */
.hero-banner {
  width: 100%;
  max-height: 340px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  line-height: 0;
}
.hero-banner img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  object-position: center 30%;
  display: block;
}

/* ---------- hero ---------- */
.hero {
  padding: 72px 0 60px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--cyan-strong);
  background: oklch(78% 0.15 198 / 0.1);
  border: 1px solid oklch(78% 0.15 198 / 0.25);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
  letter-spacing: 0.02em;
}
.hero h1 {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
  line-height: 1.02;
  background: linear-gradient(155deg, #fff 30%, var(--cyan-strong) 120%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-tagline {
  font-size: clamp(18px, 2.6vw, 23px);
  font-weight: 700;
  color: var(--text);
  margin: 0 0 16px;
}
.hero-desc {
  font-size: 16.5px;
  color: var(--text-dim);
  max-width: 500px;
  margin: 0 0 30px;
}
.hero-caption {
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-faint);
  font-weight: 600;
}
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}
.phone-shot {
  width: min(340px, 82vw);
  border-radius: 42px;
  border: 6px solid #0a0e16;
  box-shadow: var(--shadow), 0 0 0 1px rgba(255,255,255,0.06);
}
.hero-visual::before {
  content: "";
  position: absolute;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, oklch(60% 0.15 200 / 0.35), transparent 70%);
  filter: blur(10px);
  z-index: -1;
}

/* ---------- section shell ---------- */
section { padding: 76px 0; }
.section-head { max-width: 640px; margin: 0 auto 44px; text-align: center; }
.section-head h2 {
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}
.section-head p { color: var(--text-dim); font-size: 16px; margin: 0; }
.section-alt { background: linear-gradient(180deg, transparent, var(--bg-alt) 12%, var(--bg-alt) 88%, transparent); }

/* ---------- mechanic cards ---------- */
.mechanic-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 44px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
}
.card .icon { font-size: 26px; margin-bottom: 14px; display: block; }
.card h3 { font-size: 16.5px; font-weight: 700; margin: 0 0 8px; }
.card p { font-size: 14.5px; color: var(--text-dim); margin: 0; }

.mechanic-copy { max-width: 680px; margin: 0 auto; text-align: center; color: var(--text-dim); font-size: 16px; }
.mechanic-copy p { margin: 0 0 16px; }

/* ---------- modes ---------- */
.modes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 44px;
}
.mode-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  position: relative;
}
.mode-card .icon { font-size: 28px; margin-bottom: 12px; display: block; }
.mode-card h3 { font-size: 17.5px; font-weight: 700; margin: 0 0 8px; display: flex; align-items: center; gap: 8px; }
.mode-card p { font-size: 14.5px; color: var(--text-dim); margin: 0; }
.info-dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 17px; height: 17px;
  border-radius: 50%;
  background: rgba(240,246,255,0.12);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-dim);
  cursor: help;
  flex-shrink: 0;
}
.mode-card .tooltip {
  display: none;
  font-size: 12.5px;
  color: var(--text-faint);
  background: var(--panel-2);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 10px 12px;
  margin-top: 10px;
}
.mode-card:hover .tooltip { display: block; }

/* ---------- categories ---------- */
.category-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 40px;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}
.chip {
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dim);
}

/* ---------- premium ---------- */
.premium-panel {
  background: linear-gradient(160deg, rgba(20,26,20,0.6), var(--panel) 60%);
  border: 1px solid oklch(80% 0.14 85 / 0.25);
  border-radius: 28px;
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.premium-intro { color: var(--text-dim); font-size: 16px; margin: 10px 0 26px; }
.premium-benefits { display: flex; flex-direction: column; gap: 16px; margin-bottom: 30px; }
.benefit { display: flex; gap: 12px; align-items: flex-start; }
.benefit .icon { font-size: 19px; flex-shrink: 0; margin-top: 1px; }
.benefit-text { font-size: 14.5px; color: var(--text-dim); }
.benefit-text b { color: var(--text); font-weight: 700; }
.premium-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--gold);
  background: oklch(80% 0.14 85 / 0.1);
  border: 1px solid oklch(80% 0.14 85 / 0.3);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.btn-gold {
  background: linear-gradient(155deg, oklch(85% 0.13 85) 0%, oklch(58% 0.12 70) 100%);
  color: #241a04;
  border: none;
}

/* ---------- faq ---------- */
.faq-list { max-width: 760px; margin: 40px auto 0; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 15.5px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 20px;
  color: var(--cyan);
  flex-shrink: 0;
  font-weight: 400;
  transition: transform 0.15s ease;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-answer { font-size: 14.5px; color: var(--text-dim); margin-top: 12px; }

/* ---------- final cta ---------- */
.final-cta {
  text-align: center;
  padding: 90px 0;
}
.final-cta h2 { font-size: clamp(28px, 4.5vw, 42px); font-weight: 800; margin: 0 0 14px; letter-spacing: -0.01em; }
.final-cta p { color: var(--text-dim); font-size: 16.5px; max-width: 520px; margin: 0 auto 34px; }
.final-cta .store-row { justify-content: center; }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--border); padding: 56px 0 26px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.footer-brand img { width: 30px; height: 30px; border-radius: 8px; }
.footer-brand span { font-weight: 800; font-size: 17px; }
.footer-tag { color: var(--text-faint); font-size: 14px; max-width: 280px; }
.footer-col h4 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-faint); margin: 0 0 16px; font-weight: 700; }
.footer-col a, .footer-col span.contact { display: block; font-size: 14.5px; color: var(--text-dim); margin-bottom: 10px; }
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--text-faint);
  font-size: 13px;
}

/* ---------- how-to-play page ---------- */
.page-hero { padding: 56px 0 20px; text-align: center; }
.page-hero h1 { font-size: clamp(32px, 5vw, 46px); font-weight: 800; margin: 0 0 14px; letter-spacing: -0.01em; }
.page-hero p { color: var(--text-dim); font-size: 16.5px; max-width: 640px; margin: 0 auto; }

.htp-section { padding: 50px 0; border-top: 1px solid var(--border); }
.htp-section:first-of-type { border-top: none; }
.htp-section h2 { font-size: clamp(22px, 3.2vw, 28px); font-weight: 800; margin: 0 0 18px; }
.htp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.htp-text p { color: var(--text-dim); font-size: 15.5px; margin: 0 0 16px; }
.htp-text b { color: var(--text); }

.method-card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 20px; margin-bottom: 14px; }
.method-card h4 { margin: 0 0 8px; font-size: 15px; font-weight: 700; color: var(--cyan-strong); }
.method-card p { margin: 0; font-size: 14.5px; color: var(--text-dim); }

table.score-table { width: 100%; border-collapse: collapse; font-size: 14px; margin-top: 10px; }
table.score-table th, table.score-table td {
  border: 1px solid var(--border-strong);
  padding: 10px 12px;
  text-align: center;
}
table.score-table th { background: var(--panel-2); font-weight: 700; color: var(--text); }
table.score-table td { color: var(--text-dim); }
.table-note { font-size: 13px; color: var(--text-faint); margin-top: 10px; }

.example-box {
  background: var(--panel-2);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--cyan);
  border-radius: 10px;
  padding: 16px 18px;
  font-size: 14.5px;
  color: var(--text-dim);
  margin-top: 16px;
}

.label-scale { display: flex; flex-direction: column; gap: 10px; margin-top: 14px; }
.label-row { display: flex; justify-content: space-between; align-items: center; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; font-size: 14px; }
.label-row b { color: var(--text); }

.modes-detail { display: flex; flex-direction: column; gap: 16px; margin-top: 20px; }
.modes-detail .mode-card p { font-size: 14.5px; }

/* ---------- legal pages ---------- */
.legal-body { max-width: 760px; margin: 0 auto; padding: 60px 24px 90px; }
.legal-body h1 { font-size: 32px; font-weight: 800; margin-bottom: 8px; }
.legal-body .legal-meta { color: var(--text-faint); font-size: 13.5px; margin-bottom: 36px; }
.legal-body h2 { font-size: 19px; font-weight: 700; margin-top: 36px; margin-bottom: 12px; color: var(--cyan-strong); }
.legal-body p { color: var(--text-dim); font-size: 15px; margin: 0 0 14px; }
.legal-body ul, .legal-body ol { color: var(--text-dim); font-size: 15px; padding-left: 22px; }
.legal-body li { margin-bottom: 8px; }
.legal-body strong { color: var(--text); }
.legal-body a { color: var(--cyan-strong); text-decoration: underline; }
.legal-back { display: inline-block; margin-bottom: 30px; font-size: 14px; color: var(--text-dim); }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .hero-banner { max-height: 220px; }
  .hero-banner img { height: 220px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .mechanic-grid { grid-template-columns: 1fr; }
  .modes-grid { grid-template-columns: 1fr; }
  .premium-panel { grid-template-columns: 1fr; padding: 32px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .htp-grid { grid-template-columns: 1fr; gap: 20px; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
}

@media (max-width: 520px) {
  .hero-banner { max-height: 160px; }
  .hero-banner img { height: 160px; }
  section { padding: 54px 0; }
  .hero { padding: 48px 0 40px; }
  table.score-table { font-size: 12px; }
  table.score-table th, table.score-table td { padding: 7px 6px; }
}

/* mobile nav drawer */
.mobile-drawer {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 8px 24px 18px;
  border-bottom: 1px solid var(--border);
  background: rgba(5,7,11,0.96);
}
.mobile-drawer.open { display: flex; }
.mobile-drawer a { padding: 10px 0; font-size: 15px; font-weight: 600; color: var(--text-dim); border-bottom: 1px solid var(--border); }
.mobile-drawer a:last-child { border-bottom: none; }