:root {
  --bg: #f6f1e8;
  --bg-elevated: #fbf7f0;
  --surface: #fffdf8;
  --surface-2: #efe6d6;
  --fg: #1c1814;
  --muted: #6b6258;
  --subtle: #8f8578;
  --champagne: #9a7040;
  --champagne-soft: #b08950;
  --champagne-fg: #fffaf3;
  --border: #e4d9c8;
  --display: clamp(2.6rem, 1.2rem + 6.2vw, 5.6rem);
  --title: clamp(1.65rem, 1.05rem + 2.2vw, 2.75rem);
  --lead: clamp(1.05rem, 0.95rem + 0.6vw, 1.25rem);
  --shadow: 0 0 0 1px rgba(28, 24, 20, 0.08), 0 1px 2px rgba(28, 24, 20, 0.04);
  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-display: "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;
}
html[data-theme="dark"] {
  --bg: #12100e;
  --bg-elevated: #1a1612;
  --surface: #221c16;
  --surface-2: #2e261e;
  --fg: #f6f1e8;
  --muted: #cbbba8;
  --subtle: #9d8d7c;
  --champagne: #d4b483;
  --champagne-soft: #e6cba6;
  --champagne-fg: #1c140c;
  --border: #3a3128;
  --shadow: 0 0 0 1px rgba(246, 241, 232, 0.08);
}
html[data-theme="dark"] .partner-side { background: #1a1612; }
html[data-theme="dark"] .pill { background: #3a2e22; color: var(--champagne-soft); }
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  min-height: 100svh;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.7;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: 0; color: inherit; }
h1, h2, h3 { font-family: var(--font-display); letter-spacing: -0.02em; line-height: 1.2; text-wrap: balance; }
.wrap { margin: 0 auto; max-width: 72rem; padding: 0 1.25rem; }
@media (min-width: 768px) { .wrap { padding: 0 2rem; } }

header {
  position: sticky; top: 0; z-index: 40;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.nav {
  display: flex; align-items: center; justify-content: flex-start; gap: 0.75rem;
  height: 4.75rem; max-width: 72rem; margin: 0 auto; padding: 0 1.25rem;
}
.prefs { display: flex; align-items: center; gap: 0.35rem; margin-left: auto; }
.pref {
  height: 2rem; min-width: 2rem; padding: 0 0.7rem; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface); color: var(--fg);
  font-size: 0.75rem; letter-spacing: 0.04em;
}
.pref:hover { border-color: var(--champagne); color: var(--champagne); }
@media (min-width: 768px) {
  .nav-links { margin-left: auto; }
  .prefs { margin-left: 1rem; }
}
.brand { display: flex; align-items: center; }
.brand img { height: 3.5rem; width: auto; }
footer .brand img { height: 2.75rem; }
.nav-links { display: none; align-items: center; gap: 1.75rem; }
.nav-links a { font-size: 0.9rem; color: var(--muted); }
.nav-links a:hover { color: var(--fg); }
.menu-btn { width: 2.75rem; height: 2.75rem; display: grid; place-items: center; }
.mobile { display: none; border-top: 1px solid var(--border); background: var(--bg); padding: 1rem 1.25rem; }
.mobile a { display: flex; height: 2.75rem; align-items: center; }
@media (min-width: 768px) {
  .nav-links { display: flex; }
  .menu-btn { display: none; }
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  height: 2.75rem; padding: 0 1.1rem; border-radius: 0.5rem;
  font-size: 0.95rem; font-weight: 500;
}
.btn-lg { height: 3.1rem; padding: 0 1.4rem; }
.btn-full { width: 100%; }
.btn-gold { background: var(--champagne); color: var(--champagne-fg); }
.btn-outline { box-shadow: var(--shadow); background: transparent; }
.btn-soft { background: var(--surface-2); color: var(--fg); box-shadow: var(--shadow); }
.btn-ghost { color: var(--muted); font-size: 0.875rem; }

.hero { position: relative; isolation: isolate; min-height: 100svh; overflow: hidden; }
.hero img.bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero .veil { position: absolute; inset: 0; background: linear-gradient(to top, var(--bg), color-mix(in srgb, var(--bg) 75%, transparent), color-mix(in srgb, var(--bg) 35%, transparent)); }
.hero-inner {
  position: relative; min-height: 100svh; max-width: 72rem; margin: 0 auto;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 7rem 1.25rem 4rem;
}
.kicker { font-size: 0.75rem; letter-spacing: 0.28em; color: var(--champagne); text-transform: uppercase; }
h1 { margin-top: 1.25rem; font-size: var(--display); }
.lead { margin-top: 1.25rem; max-width: 36rem; font-size: var(--lead); }
.hero-cta { margin-top: 2rem; display: flex; flex-direction: column; gap: 0.75rem; }
.price-row { margin-top: 3rem; display: grid; grid-template-columns: 1fr 1fr; gap: 1px; overflow: hidden; border-radius: 0.75rem; background: var(--border); }
.price-row a { background: color-mix(in srgb, var(--bg) 80%, transparent); padding: 1rem; backdrop-filter: blur(6px); }
.price-row strong { display: block; font-family: var(--font-display); font-size: 1.5rem; color: var(--champagne-soft); font-weight: 500; }
.price-row span { font-size: 0.75rem; color: var(--muted); }
@media (min-width: 640px) {
  .hero-cta { flex-direction: row; align-items: center; }
  .price-row { grid-template-columns: repeat(4, 1fr); }
}

.stats { border-block: 1px solid var(--border); background: var(--bg-elevated); }
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; max-width: 72rem; margin: 0 auto; }
.stats-grid div { padding: 2rem 1.25rem; }
.stats-grid strong { display: block; font-family: var(--font-display); font-size: 1.5rem; }
.stats-grid span { font-size: 0.875rem; color: var(--muted); }
@media (min-width: 768px) {
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
  .stats-grid div { padding: 2rem; border-right: 1px solid var(--border); }
  .stats-grid div:last-child { border-right: 0; }
  .stats-grid strong { font-size: 1.875rem; }
}

.section { padding: 5rem 1.25rem; }
@media (min-width: 768px) { .section { padding: 7rem 2rem; } }
.center { text-align: center; }
h2 { font-size: var(--title); margin-top: 0.75rem; }
.muted { color: var(--muted); }
.subtle { color: var(--subtle); }
.mt { margin-top: 1rem; }
.gold { color: var(--champagne); }

.tip { position: relative; }
.tip-btn {
  display: inline-flex; align-items: center; margin-top: 0.85rem;
  height: auto; padding: 0.7rem 1.15rem; border-radius: 0.65rem;
  border: 0; color: #fffaf3;
  background: #9a7040; font-size: 0.95rem; font-weight: 600; line-height: 1.3;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(154, 112, 64, 0.28);
}
.tip-btn:hover { background: #7d5a30; }
.tip-panel {
  display: none;
  position: absolute; z-index: 30; top: calc(100% + 0.6rem); left: 50%;
  transform: translateX(-50%);
  width: min(34rem, calc(100vw - 2rem));
  text-align: left; font-weight: 400;
  background: var(--surface); color: var(--fg);
  border-radius: 1rem; padding: 1rem 1rem 0.85rem;
  box-shadow: var(--shadow);
}
.tip-corner {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.85rem;
}
.tip-corner .tip-btn { margin-top: 0; }
.tip-corner .tip-panel {
  top: auto;
  bottom: calc(100% + 0.55rem);
  left: auto;
  right: 0;
  transform: none;
}
.tip:hover .tip-panel,
.tip:focus-within .tip-panel,
.tip.open .tip-panel { display: block; }
.tip-kicker { font-size: 0.7rem; letter-spacing: 0.16em; color: var(--champagne); }
.tip-title { font-family: var(--font-display); font-size: 1.25rem; margin-top: 0.25rem; }
.tip-lead { margin-top: 0.35rem; font-size: 0.8rem; color: var(--muted); }
.tip-panel table { width: 100%; margin-top: 0.75rem; border-collapse: collapse; font-size: 0.85rem; }
.tip-panel th {
  background: #9a7040; color: #fffaf3; font-weight: 500; text-align: center;
  padding: 0.55rem 0.4rem;
}
.tip-panel th:first-child { border-radius: 0.6rem 0 0 0; }
.tip-panel th:last-child { border-radius: 0 0.6rem 0 0; }
.tip-panel td { text-align: center; padding: 0.65rem 0.4rem; border-bottom: 1px solid var(--border); }
.tip-panel td span { display: block; font-size: 0.7rem; color: var(--subtle); }
.tip-note { margin-top: 0.55rem; font-size: 0.78rem; color: var(--muted); line-height: 1.45; }

.partner {
  margin-top: 2.5rem;
  display: grid;
  overflow: hidden;
  border-radius: 1rem;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.partner-main { padding: 1.5rem; }
.partner-side {
  background: #fbf6ee;
  color: var(--fg);
  padding: 1.5rem;
  box-shadow: inset 0 0 0 1px var(--border);
}
.partner h3 { font-size: 2rem; margin-top: 1.25rem; }
.pill {
  display: inline-flex; border-radius: 999px; background: #efe6d6;
  color: var(--champagne); font-size: 0.75rem; padding: 0.25rem 0.75rem;
}
.lot {
  margin-top: 1.5rem; background: #9a7040; color: #fffaf3;
  border-radius: 0.75rem; padding: 1rem 1.25rem;
}
.lot-num { font-family: var(--font-display); font-size: 2.5rem; line-height: 1; margin-top: 0.25rem; }
.lot p:last-child { margin-top: 0.5rem; font-size: 0.9rem; opacity: 0.85; }
.steps-num { margin-top: 1.5rem; display: grid; gap: 0.75rem; padding-left: 1.25rem; font-size: 0.9rem; }
.checks.light li::before { color: #b08950; }
@media (min-width: 768px) { .partner-main, .partner-side { padding: 2.5rem; } }
@media (min-width: 1024px) { .partner { grid-template-columns: 1.15fr 0.85fr; } }
.plans-grid {
  margin-top: 2.5rem;
  display: grid;
  gap: 1.25rem;
  align-items: stretch;
}
@media (min-width: 768px) {
  .plans-grid { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
}

.card {
  position: relative; display: flex; flex-direction: column;
  background: var(--surface); border-radius: 1rem; padding: 1.5rem;
  box-shadow: var(--shadow);
}
.card.life { box-shadow: 0 0 0 2px var(--champagne); padding: 2rem 1.75rem 1.5rem; }
.badge {
  position: absolute; top: -0.75rem; left: 50%; transform: translateX(-50%);
  background: var(--champagne); color: var(--champagne-fg);
  font-size: 0.75rem; font-weight: 500; padding: 0.25rem 0.75rem; border-radius: 999px;
}
.card h3 { font-size: 1.875rem; line-height: 1.15; }
@media (min-width: 768px) { .card h3 { font-size: 2.25rem; } .card { padding: 2rem; } }
.card .actions { margin-top: auto; padding-top: 1.5rem; }
.checks { margin-top: 1.5rem; flex: 1; list-style: none; display: grid; gap: 0.65rem; }
.checks li { display: flex; gap: 0.5rem; font-size: 0.9rem; }
.checks li::before { content: "✓"; color: var(--champagne); flex-shrink: 0; }
.strike { font-size: 0.875rem; color: var(--subtle); text-decoration: line-through; }
.price { font-family: var(--font-display); font-size: 3rem; line-height: 0.9; margin-top: 0.15rem; }
.price.big { font-size: 3.75rem; }
@media (min-width: 768px) { .price.big { font-size: 4.5rem; } }

.two { display: grid; gap: 3rem; align-items: center; }
.frame { border-radius: 0.75rem; width: 100%; aspect-ratio: 16/9; object-fit: cover; box-shadow: var(--shadow); }
.creds { margin-top: 1.5rem; list-style: none; display: grid; gap: 0.75rem; font-size: 0.9rem; }
.creds li { display: flex; align-items: center; gap: 0.5rem; }
@media (min-width: 1024px) { .two { grid-template-columns: 1fr 1fr; } }

.risk { border-block: 1px solid var(--border); background: var(--bg-elevated); }
.risk-box { max-width: 48rem; margin: 0 auto; text-align: center; }
.perks { margin-top: 2rem; display: grid; gap: 1rem; }
.perk { background: var(--surface); border-radius: 0.5rem; padding: 1.25rem; box-shadow: var(--shadow); }
.perk h3 { font-size: 1.125rem; }
@media (min-width: 640px) { .perks { grid-template-columns: 1fr 1fr; } }

.steps { margin-top: 3rem; display: grid; gap: 1.5rem; }
@media (min-width: 640px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.n { font-family: var(--font-display); font-size: 1.875rem; color: color-mix(in srgb, var(--champagne) 70%, transparent); }

.faq { display: grid; gap: 2.5rem; border-top: 1px solid var(--border); }
@media (min-width: 1024px) { .faq { grid-template-columns: 0.8fr 1.2fr; } }
details { border-bottom: 1px solid var(--border); padding: 1.25rem 0; }
summary { list-style: none; display: flex; justify-content: space-between; gap: 1rem; cursor: pointer; font-weight: 500; }
summary::-webkit-details-marker { display: none; }
details p { margin-top: 0.75rem; font-size: 0.9rem; color: var(--muted); }

.pay {
  max-width: 36rem; margin: 0 auto; background: var(--surface);
  border-radius: 1rem; padding: 2rem; box-shadow: var(--shadow);
}
@media (min-width: 768px) { .pay { padding: 3rem; } }
.plan-pick, .pay-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; margin-top: 1.5rem; }
.plan-pick button {
  text-align: left; border-radius: 0.5rem; padding: 0.75rem; box-shadow: var(--shadow);
  background: var(--bg-elevated);
}
.plan-pick button.on { background: var(--surface-2); }
.plan-pick .nm { display: block; font-family: var(--font-display); }
.plan-pick .pr { font-family: var(--font-display); color: var(--champagne); font-size: 1.125rem; }
.contact-row { display: grid; gap: 0.5rem; margin-top: 1rem; }
.contact-row button {
  display: flex; justify-content: space-between; align-items: center;
  width: 100%; text-align: left; background: var(--bg-elevated);
  border-radius: 0.5rem; padding: 0.75rem 1rem; box-shadow: var(--shadow);
}
.contact-row small { display: block; font-size: 0.75rem; color: var(--subtle); }
.mono { font-family: ui-monospace, Menlo, monospace; }

.closing { position: relative; isolation: isolate; overflow: hidden; }
.closing img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.closing .veil { position: absolute; inset: 0; background: color-mix(in srgb, var(--bg) 80%, transparent); }
.closing-inner { position: relative; max-width: 48rem; margin: 0 auto; padding: 6rem 1.25rem; text-align: center; }

footer { border-top: 1px solid var(--border); background: var(--bg-elevated); }
.foot { display: grid; gap: 2.5rem; padding: 3.5rem 1.25rem; max-width: 72rem; margin: 0 auto; }
@media (min-width: 768px) { .foot { grid-template-columns: 1.4fr 1fr; padding-inline: 2rem; } }
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; font-size: 0.9rem; }
.cols span.label { display: block; font-size: 0.75rem; letter-spacing: 0.16em; color: var(--subtle); text-transform: uppercase; margin-bottom: 0.5rem; }
.cols a, .cols p { color: var(--muted); margin-top: 0.4rem; }
.legal { border-top: 1px solid var(--border); padding: 1.5rem 1.25rem; max-width: 72rem; margin: 0 auto; font-size: 0.75rem; color: var(--subtle); }

.hidden { display: none; }
@media (min-width: 768px) { .hide-md { display: none; } }