:root {
  color-scheme: light;
  --bg: #f8f2ea;
  --bg-deep: #e8ded0;
  --ink: #1d1812;
  --muted: #75695e;
  --soft: rgba(255, 255, 255, 0.58);
  --line: rgba(75, 52, 31, 0.12);
  --brand: #b76820;
  --brand-2: #c47a2a;
  --dark: #201810;
  --cream: #fff7ea;
  --shadow: 0 28px 80px rgba(80, 55, 30, 0.14);
  --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 16% 8%, rgba(196, 122, 42, 0.16), transparent 28rem),
    radial-gradient(circle at 80% 16%, rgba(255, 247, 234, 0.68), transparent 22rem),
    linear-gradient(145deg, var(--bg), var(--bg-deep));
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(22px);
  background: rgba(248, 242, 234, 0.78);
  border-bottom: 1px solid var(--line);
}

.nav {
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-lockup { display: flex; align-items: center; gap: 12px; font-weight: 900; }
.brand-lockup img { width: 42px; height: 42px; border-radius: 11px; box-shadow: 0 10px 28px rgba(80, 45, 20, 0.18); }
.brand-lockup small { display: block; font-weight: 700; color: var(--muted); letter-spacing: 0.05em; }

.nav-links { display: flex; align-items: center; gap: 22px; color: var(--muted); font-size: 15px; font-weight: 700; }
.nav-links a:hover { color: var(--brand); }
.nav-toggle { display: none; border: 0; background: transparent; font: inherit; color: var(--ink); }

.container { max-width: 1180px; margin: 0 auto; padding: 0 22px; }
.section { padding: 92px 0; }
.section-tight { padding: 58px 0; }
.eyebrow { color: var(--brand); font-weight: 900; letter-spacing: 0.12em; text-transform: uppercase; font-size: 13px; }

h1, h2, h3 { margin: 0; text-wrap: pretty; }
h1, .display {
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  font-size: clamp(56px, 8vw, 108px);
  line-height: 0.96;
  letter-spacing: -0.075em;
}
h2 { font-family: "Songti SC", "STSong", serif; font-size: clamp(36px, 5vw, 68px); line-height: 1.04; letter-spacing: -0.055em; }
h3 { font-size: 22px; letter-spacing: -0.02em; }
p { color: var(--muted); line-height: 1.75; text-wrap: pretty; }
.lead { font-size: clamp(20px, 2.4vw, 30px); line-height: 1.55; max-width: 780px; }

.hero { padding: 92px 0 70px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.78fr); gap: 58px; align-items: center; }
.hero-copy { display: grid; gap: 28px; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 12px; }
.badge { border: 1px solid var(--line); background: rgba(255,255,255,0.42); border-radius: 999px; padding: 9px 13px; color: var(--muted); font-size: 14px; font-weight: 800; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.button { display: inline-flex; align-items: center; justify-content: center; border-radius: 999px; padding: 15px 22px; font-weight: 900; border: 1px solid transparent; }
.button.primary { background: var(--brand); color: white; box-shadow: 0 18px 38px rgba(183, 104, 32, 0.24); }
.button.secondary { border-color: var(--line); background: rgba(255,255,255,0.48); color: var(--ink); }
.button.disabled { opacity: 0.82; cursor: default; }

.hero-phone-stack { position: relative; min-height: 640px; }
.phone-card { position: absolute; width: min(330px, 58vw); border-radius: 42px; padding: 10px; background: #050505; box-shadow: var(--shadow); transform: rotate(-5deg); }
.phone-card img { border-radius: 32px; aspect-ratio: 1290 / 2796; object-fit: cover; }
.phone-card:nth-child(2) { right: 0; top: 80px; transform: rotate(6deg); }
.phone-card:nth-child(1) { left: 8px; top: 0; z-index: 2; }
.floating-note { position: absolute; right: 12%; bottom: 24px; z-index: 4; max-width: 250px; padding: 18px; border-radius: 24px; background: rgba(255,255,255,0.72); border: 1px solid rgba(255,255,255,0.8); box-shadow: 0 20px 50px rgba(80, 55, 30, 0.13); backdrop-filter: blur(18px); font-weight: 900; }
.floating-note span { display: block; color: var(--brand); font-size: 13px; letter-spacing: 0.1em; margin-bottom: 6px; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.card { background: var(--soft); border: 1px solid rgba(255,255,255,0.8); border-radius: var(--radius); padding: 26px; box-shadow: 0 16px 48px rgba(80, 55, 30, 0.07); }
.card p { margin-bottom: 0; }
.card .num { color: var(--brand); font-weight: 950; font-size: 15px; letter-spacing: 0.09em; }

.problem { background: linear-gradient(145deg, rgba(29, 24, 18, 0.96), rgba(50, 38, 27, 0.97)); color: white; }
.problem p, .problem .muted { color: rgba(255,255,255,0.72); }
.problem .card { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.12); box-shadow: none; }
.problem .card h3 { color: var(--cream); }

.showcase-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 28px; }
.screenshot-strip { display: grid; grid-template-columns: repeat(5, minmax(210px, 1fr)); gap: 18px; overflow-x: auto; padding-bottom: 12px; }
.screenshot-card { min-width: 210px; border-radius: 30px; padding: 8px; background: #050505; box-shadow: var(--shadow); }
.screenshot-card img { border-radius: 24px; }

.privacy-panel { border-radius: 40px; background: radial-gradient(circle at 15% 20%, rgba(255,255,255,0.7), transparent 26rem), linear-gradient(135deg, #fff7ea, #e8d5bd); padding: clamp(28px, 5vw, 58px); box-shadow: var(--shadow); }
.trust-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 30px; }
.trust-item { padding: 18px; border-radius: 22px; background: rgba(255,255,255,0.58); border: 1px solid rgba(255,255,255,0.78); font-weight: 900; }
.trust-item span { color: var(--brand); display: block; font-size: 13px; letter-spacing: 0.1em; margin-bottom: 8px; }

.pricing { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 30px; align-items: start; }
.price-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.price-card { position: relative; }
.price-card.recommended { border: 2px solid var(--brand); background: rgba(255, 247, 234, 0.9); }
.price { font-size: 38px; font-weight: 950; color: var(--ink); margin: 14px 0 4px; }
.ribbon { position: absolute; right: 18px; top: -12px; background: var(--dark); color: white; border-radius: 999px; padding: 7px 12px; font-size: 12px; font-weight: 900; }

.faq { display: grid; gap: 12px; }
details { background: rgba(255,255,255,0.52); border: 1px solid rgba(255,255,255,0.75); border-radius: 20px; padding: 18px 20px; }
summary { cursor: pointer; font-weight: 900; }
details p { margin: 12px 0 0; }

.page-hero { padding: 72px 0 34px; }
.legal-layout { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 34px; align-items: start; }
.side-card { position: sticky; top: 92px; }
.prose { background: rgba(255,255,255,0.58); border: 1px solid rgba(255,255,255,0.8); border-radius: 34px; padding: clamp(24px, 4vw, 46px); box-shadow: 0 16px 48px rgba(80,55,30,0.07); }
.prose h2 { font-size: 28px; margin-top: 34px; }
.prose h2:first-child { margin-top: 0; }
.prose li { color: var(--muted); line-height: 1.8; margin: 6px 0; }

.site-footer { border-top: 1px solid var(--line); padding: 36px 0; color: var(--muted); }
.footer-grid { display: flex; justify-content: space-between; gap: 22px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; font-weight: 800; }

@media (max-width: 920px) {
  .hero-grid, .pricing, .legal-layout { grid-template-columns: 1fr; }
  .hero-phone-stack { min-height: 560px; }
  .grid-3, .grid-2, .trust-list { grid-template-columns: 1fr; }
  .price-grid { grid-template-columns: 1fr; }
  .side-card { position: static; }
}

@media (max-width: 720px) {
  .nav-links { display: none; position: absolute; left: 16px; right: 16px; top: 74px; padding: 18px; border-radius: 22px; background: rgba(255,247,234,0.96); border: 1px solid var(--line); box-shadow: var(--shadow); flex-direction: column; align-items: flex-start; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: inline-flex; }
  .section { padding: 64px 0; }
  .hero { padding-top: 58px; }
  .hero-phone-stack { min-height: 480px; }
  .phone-card { width: 250px; }
  .phone-card:nth-child(2) { right: -20px; top: 92px; }
  .floating-note { left: 20px; right: 20px; bottom: 0; max-width: none; }
  .showcase-head { display: block; }
}