:root {
  color-scheme: dark;
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --black: #080806;
  --ivory: #f4efe4;
  --muted: #8e897d;
  --line: rgba(220, 190, 125, .2);
  --gold: #d6af61;
  --gold-light: #f1d898;
}
* { box-sizing: border-box; }
html { min-width: 320px; background: var(--black); }
body { min-height: 100vh; margin: 0; overflow-x: hidden; color: var(--ivory); background: radial-gradient(circle at 74% 42%, #24221e 0, #11110f 24rem, var(--black) 55rem); }
body::before { content: ""; position: fixed; inset: 0; pointer-events: none; opacity: .18; background-image: linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px); background-size: 64px 64px; mask-image: linear-gradient(to bottom, #000, transparent 88%); }
.gold-dust { position: fixed; width: 38rem; height: 38rem; right: -11rem; top: 12%; pointer-events: none; opacity: .18; background: radial-gradient(circle, rgba(240,207,130,.6) 0 1px, transparent 1.5px); background-size: 37px 37px; mask-image: radial-gradient(circle, #000, transparent 68%); }
.product-shell { width: min(1240px, calc(100% - 64px)); min-height: 100vh; margin: 0 auto; display: grid; grid-template-rows: auto 1fr auto auto; position: relative; }
.product-header { min-height: 92px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand-lockup { display: flex; align-items: center; gap: 13px; }
.brand-icon { width: 40px; height: 40px; display: block; border-radius: 9px; box-shadow: 0 8px 34px rgba(214,175,97,.14); }
.brand-lockup div { display: grid; gap: 2px; }
.brand-lockup strong { font: 700 17px/1.2 "Songti SC", "STSong", serif; letter-spacing: .15em; }
.brand-lockup small, .beta-state, .eyebrow { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.brand-lockup small { color: #706b60; font-size: 8px; letter-spacing: .36em; }
.beta-state { display: inline-flex; align-items: center; gap: 9px; color: #9d927d; font-size: 9px; font-weight: 700; letter-spacing: .18em; }
.beta-state i { width: 5px; height: 5px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 14px rgba(214,175,97,.8); }
.product-hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(410px, .95fr); align-items: center; gap: clamp(48px, 8vw, 116px); padding: clamp(66px, 8vh, 100px) 0 54px; }
.eyebrow { margin: 0 0 25px; color: var(--gold); font-size: 10px; font-weight: 700; letter-spacing: .24em; }
h1 { margin: 0; font: 700 clamp(60px, 7.8vw, 104px)/.98 "STKaiti", "KaiTi", "Songti SC", serif; letter-spacing: -.075em; }
h1 em { color: transparent; font-style: normal; background: linear-gradient(105deg, #9c712d, #f2da9c 48%, #b18232); -webkit-background-clip: text; background-clip: text; }
.lead { max-width: 660px; margin: 34px 0 0; color: var(--muted); font-size: 16px; line-height: 2; }
.icon-stage { aspect-ratio: 1; max-width: 540px; width: 100%; margin: 0; justify-self: end; position: relative; display: grid; place-items: center; }
.icon-stage::before { content: ""; position: absolute; inset: 12%; border-radius: 50%; background: rgba(216, 171, 83, .12); filter: blur(70px); }
.icon-stage img { width: 100%; height: 100%; display: block; object-fit: cover; position: relative; filter: contrast(1.04) saturate(.93); -webkit-mask-image: radial-gradient(circle, #000 47%, rgba(0,0,0,.94) 60%, transparent 79%); mask-image: radial-gradient(circle, #000 47%, rgba(0,0,0,.94) 60%, transparent 79%); }
.icon-frame { position: absolute; inset: 8%; border: 1px solid rgba(222, 185, 111, .17); transform: rotate(45deg); }
.icon-frame::before, .icon-frame::after { content: ""; position: absolute; background: rgba(222, 185, 111, .2); }
.icon-frame::before { width: 1px; height: 130%; left: 50%; top: -15%; }
.icon-frame::after { height: 1px; width: 130%; top: 50%; left: -15%; }
.product-principles { min-height: 74px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: center; gap: clamp(28px, 5vw, 72px); color: #d4ccbd; font: 600 13px/1 "Songti SC", serif; letter-spacing: .28em; }
.product-principles span { display: flex; align-items: center; gap: 10px; }
.product-principles small { color: #6f6656; font: 700 8px/1 ui-monospace, monospace; letter-spacing: .05em; }
.product-principles i { width: 3px; height: 3px; border-radius: 50%; background: #70572b; }
.product-footer { min-height: 76px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 24px; color: #6f6a61; font-size: 11px; }
.product-footer nav { display: flex; flex-wrap: wrap; gap: 20px; }
.product-footer a { color: inherit; text-decoration: none; transition: color .2s ease; }
.product-footer a:hover, .product-footer a:focus-visible { color: var(--gold-light); }
@media (max-width: 900px) {
  .product-shell { width: min(100% - 36px, 720px); }
  .product-hero { grid-template-columns: 1fr; }
  .icon-stage { max-width: 520px; justify-self: center; }
}
@media (max-width: 560px) {
  .product-header { min-height: 76px; }
  .product-hero { padding-top: 58px; }
  h1 { font-size: clamp(55px, 17vw, 76px); }
  .icon-stage { width: calc(100% - 14px); }
  .product-principles { gap: 18px; }
  .product-footer { padding: 20px 0; align-items: flex-start; flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; } }