:root {
  --bg: #0E0D0B;
  --bg-2: #171512;
  --card: #1C1A16;
  --card-2: #232019;
  --line: rgba(255, 236, 214, 0.08);
  --line-2: rgba(255, 236, 214, 0.16);
  --ink: #F7F2EA;
  --ink-2: #B8AE9F;
  --ink-3: #7D7466;
  --orange: #FF8A3D;
  --amber: #FFC157;
  --deep: #D85A30;
  --glow: rgba(255, 138, 61, 0.14);
  font: 100%/1.6 system-ui, -apple-system, "PingFang TC", "Noto Sans TC", sans-serif;
}

:root {
  --primary-blue: var(--orange); --primary-purple: var(--amber);
  --text-primary: var(--ink); --text-secondary: var(--ink-2); --text-muted: var(--ink-3); --text-light: var(--ink-3); --text-white: #fff;
  --bg-primary: var(--bg); --bg-secondary: var(--bg); --bg-tertiary: var(--card); --bg-muted: var(--card-2);
  --border-light: var(--line); --border-medium: var(--line-2); --border-dark: var(--line-2);
  --shadow-sm: none; --shadow-base: none; --shadow-md: none; --shadow-lg: none; --shadow-xl: none;
  --radius-sm: 0.375rem; --radius-base: 0.5rem; --radius-md: 0.75rem; --radius-lg: 1rem; --radius-xl: 1.5rem; --radius-full: 9999px;
  --space-xs: 0.25rem; --space-sm: 0.5rem; --space-base: 1rem; --space-lg: 1.5rem; --space-xl: 2rem; --space-2xl: 3rem; --space-3xl: 4rem; --space-4xl: 6rem;
  --text-xs: 0.75rem; --text-sm: 0.875rem; --text-base: 1rem; --text-lg: 1.125rem; --text-xl: 1.25rem; --text-2xl: 1.5rem; --text-3xl: 1.875rem; --text-4xl: 2.25rem;
  --leading-tight: 1.25; --leading-normal: 1.5; --leading-relaxed: 1.75;
  --font-light: 300; --font-normal: 400; --font-medium: 500; --font-semibold: 600; --font-bold: 700;
  --transition-fast: 150ms ease; --transition-base: 250ms ease;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; color-scheme: dark; }
body { background: var(--bg); color: var(--ink); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
h1, h2, h3, h4 { line-height: 1.25; letter-spacing: -0.01em; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.caption { font-size: 0.82rem; letter-spacing: 0.02em; color: var(--ink-3); }
/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem clamp(1rem, 4vw, 2.5rem);
  background: rgba(14, 13, 11, 0.55);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  backdrop-filter: blur(20px) saturate(160%);
}
.nav::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -16px;
  height: 16px;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.28), transparent);
  pointer-events: none;
}
@media (prefers-reduced-transparency: reduce) {
  .nav { background: var(--bg); -webkit-backdrop-filter: none; backdrop-filter: none; }
}
@media (prefers-contrast: more) {
  .nav { background: var(--bg); border-bottom: 1px solid var(--ink-2); }
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.12rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}
.brand svg { display: block; border-radius: 9px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.62rem 1.3rem;
  border-radius: 999px;
  border: none;
  font: inherit;
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  text-decoration: none;
  transition: transform 100ms ease-out, background 150ms ease-out;
  will-change: transform;
}
.btn:active { transform: scale(0.96); }
.btn-primary {
  background: var(--orange);
  color: #1A0F05;
  box-shadow: 0 0 24px rgba(255, 138, 61, 0.35);
}
.btn-primary:hover { background: var(--amber); }
.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.72rem 1.45rem;
  border-radius: 16px;
  background: var(--ink);
  color: #131109;
  text-decoration: none;
  transition: transform 100ms ease-out, box-shadow 150ms ease-out;
  will-change: transform;
}
.store-badge:hover { box-shadow: 0 0 28px rgba(255, 236, 214, 0.18); }
.store-badge:active { transform: scale(0.96); }
.store-badge .small { font-size: 0.66rem; opacity: 0.65; display: block; line-height: 1.2; }
.store-badge .big { font-size: 1.02rem; font-weight: 650; line-height: 1.25; display: block; letter-spacing: -0.01em; }
.store-badge.outline {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line-2);
}
.store-badge.outline:hover { border-color: var(--ink-3); }

/* ---------- Footer ---------- */
.footer {
  background: #14120E;
  border-top: 1px solid var(--line);
  margin-top: clamp(2rem, 5vw, 4rem);
}
.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(3rem, 6vw, 4.5rem) clamp(1.25rem, 4vw, 2.5rem) 0;
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 2rem;
}
@media (max-width: 900px) { .footer-inner { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-inner { grid-template-columns: 1fr; } }
.footer h4 {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.005em;
  margin-bottom: 1.1rem;
}
.footer-col { display: flex; flex-direction: column; gap: 0.7rem; }
.footer-col a {
  color: var(--ink-3);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color 150ms ease-out;
}
.footer-col a:hover { color: var(--ink); }
.footer-tagline { color: var(--ink-3); font-size: 0.92rem; margin-top: 0.8rem; }
.footer-bottom {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.8rem clamp(1.25rem, 4vw, 2.5rem) 2.2rem;
  border-top: 1px solid var(--line);
  margin-top: 2.8rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  text-align: center;
}
.footer-bottom a { color: var(--ink-2); text-decoration: none; }
.footer-bottom a:hover { color: var(--ink); }

.brand img { display: block; border-radius: 9px; }

.nav-right { display: flex; align-items: center; gap: 1.1rem; }
.lang { color: var(--ink-2); font-size: 0.9rem; font-weight: 600; text-decoration: none; transition: color 150ms ease-out; }
.lang:hover { color: var(--ink); }

/* ---------- Legal and release pages ---------- */
.legal-page, .releases-page { padding: 64px 0 60px; background: var(--bg); min-height: 0; }
.legal-content, .releases-content { background: none; box-shadow: none; padding: 0; border-radius: 0; }
.legal-title, .releases-title, .legal-updated, .releases-subtitle { text-align: left; }
.legal-updated { font-style: normal; }
.legal-section h2 { border-bottom: 1px solid var(--line-2); }
.legal-section a, .contact-info a { color: var(--amber); }
.highlight-box { background: var(--card); border-left-color: var(--orange); }
.contact-info { background: var(--card); }
.callout { background-color: var(--card); border-left-color: var(--amber); }
.callout-content strong { color: var(--amber); }
.back-home a { background: var(--orange); color: #1A0F05; font-weight: 600; }
.back-home a:hover { background: var(--amber); transform: none; }
.release-item { border-left: 1px solid var(--line-2); }
.release-item::before { background: var(--orange); box-shadow: 0 0 0 4px var(--bg); }