:root {
  --red: #a51e25;
  --wine: #6e1115;
  --gold: #d3ad78;
  --deep: #040000;
  --paper: #fbf5eb;
  --soft: #fff8ed;
  --ink: #292923;
  --muted: #766a5e;
  --line: rgba(211, 173, 120, .34);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  letter-spacing: 0;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(47, 43, 41, .96);
  border-bottom: 1px solid rgba(211, 173, 120, .28);
}
.nav {
  max-width: 1180px;
  height: 72px;
  margin: 0 auto;
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #fff8ed;
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; font-weight: 700; }
.brand img { width: 44px; height: 44px; border-radius: 6px; border: 1px solid rgba(211,173,120,.55); }
.brand-wide img {
  width: 176px;
  height: auto;
  max-height: 52px;
  border: 0;
  border-radius: 0;
  object-fit: contain;
}
.brand small { display: block; margin-top: 4px; color: var(--gold); font-size: 11px; text-transform: uppercase; }
.nav-links { display: flex; align-items: center; gap: 24px; color: rgba(255,248,237,.86); font-size: 14px; }
.nav-links .active, .nav-links .gold { color: var(--gold); font-weight: 700; }
.eyebrow { color: var(--gold); font-size: 14px; font-weight: 800; letter-spacing: .08em; }
h1, h2, h3, p { margin: 0; }
h1 { font-size: clamp(42px, 6vw, 72px); line-height: 1.08; letter-spacing: 0; }
h2 { font-size: clamp(32px, 4vw, 46px); line-height: 1.18; letter-spacing: 0; }
h3 { font-size: 24px; line-height: 1.25; letter-spacing: 0; }
p { line-height: 1.85; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid rgba(211,173,120,.75);
  border-radius: 4px;
  font-weight: 800;
}
.btn.gold { background: var(--gold); color: var(--deep); }
.btn.dark { background: rgba(4,0,0,.72); color: #fff8ed; }
.hero {
  min-height: 740px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  background: linear-gradient(180deg, var(--red) 0%, #e0b184 100%);
}
.hero-copy {
  padding: 104px 64px 74px max(22px, calc((100vw - 1180px) / 2 + 22px));
  color: #fff8ed;
  background: linear-gradient(135deg, #8c1c20, #c0664f 74%, #d8a279);
}
.hero-copy h1 { margin-top: 16px; max-width: 560px; font-size: clamp(42px, 5vw, 64px); }
.hero-copy h1 span { display: block; }
.hero-copy p { margin-top: 24px; max-width: 560px; color: rgba(255,248,237,.9); font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.proof {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 30px;
}
.proof div {
  min-height: 74px;
  padding: 13px;
  border: 1px solid rgba(211,173,120,.52);
  border-radius: 6px;
  background: rgba(4,0,0,.14);
  color: rgba(255,248,237,.85);
  line-height: 1.45;
}
.proof strong { display: block; color: var(--gold); font-size: 17px; margin-bottom: 4px; }
.hero-poster {
  min-height: 740px;
  overflow: hidden;
  background: linear-gradient(180deg, #b91f1d 0%, #f4d8b8 100%);
  display: flex;
  justify-content: flex-start;
}
.hero-poster img {
  width: 82%;
  height: auto;
  align-self: flex-start;
  object-fit: contain;
  object-position: left top;
}
.section { padding: 78px 22px; }
.inner { max-width: 1180px; margin: 0 auto; }
.section-head {
  display: grid;
  grid-template-columns: .78fr 1.22fr;
  gap: 56px;
  align-items: end;
  margin-bottom: 34px;
}
.section-head p { color: var(--muted); font-size: 17px; }
.theme-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.theme-card {
  background: #fffaf1;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 18px 48px rgba(70,35,10,.08);
}
.theme-card figure {
  margin: 0;
  display: block;
  background: #8b1015;
}
.theme-card img {
  width: 100%;
  height: auto;
  background: #8b1015;
}
.theme-body { padding: 24px; min-height: 210px; }
.label { color: var(--gold); font-size: 13px; font-weight: 800; }
.theme-body h3, .series-title h2, .buyback-main h2 { color: var(--wine); margin-top: 8px; }
.theme-body p, .series-title p, .detail-card p { color: var(--muted); font-size: 15px; }
.product-wall { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-top: 34px; }
.product-tile {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  background: #8b1015;
  border: 1px solid var(--line);
}
.product-tile img { width: 100%; height: auto; background: #8b1015; }
.product-tile span {
  display: block;
  padding: 10px 12px 12px;
  color: #fff8ed;
  background: #8b1015;
  font-weight: 800;
}
.story {
  background: #fffaf1;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.story-text {
  columns: 2;
  column-gap: 48px;
  color: #4b4037;
  font-size: 16px;
}
.story-text p { margin-bottom: 14px; break-inside: avoid; }
.buyback-band {
  color: #fff8ed;
  background:
    linear-gradient(90deg, rgba(4,0,0,.96), rgba(110,17,21,.88)),
    url("assets/mountain-scene.jpg") center / cover no-repeat;
}
.buyback-band .inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 46px;
  align-items: center;
}
.buyback-band p { margin-top: 16px; color: rgba(255,248,237,.82); }
.buyback-points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.buyback-points div {
  min-height: 92px;
  padding: 18px;
  border-radius: 6px;
  border: 1px solid rgba(211,173,120,.38);
  background: rgba(255,255,255,.06);
  color: rgba(255,248,237,.84);
}
.buyback-points strong { display: block; color: var(--gold); margin-bottom: 4px; }
.page-hero {
  min-height: 430px;
  padding: 118px 22px 64px;
  color: #fff8ed;
  background:
    linear-gradient(90deg, rgba(4,0,0,.9), rgba(110,17,21,.72), rgba(4,0,0,.18)),
    url("assets/gift-bars.jpg") center / cover no-repeat;
}
.page-hero.buyback {
  background:
    linear-gradient(90deg, rgba(4,0,0,.94), rgba(110,17,21,.78), rgba(4,0,0,.18)),
    url("assets/mountain-scene.jpg") center / cover no-repeat;
}
.page-hero .inner { padding-top: 20px; }
.page-hero h1 { max-width: 820px; margin-top: 16px; }
.page-hero p { max-width: 760px; margin-top: 20px; color: rgba(255,248,237,.86); font-size: 19px; }
.series-detail {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 34px;
  padding: 34px 0;
  border-top: 1px solid var(--line);
}
.series-detail:first-child { border-top: 0; padding-top: 0; }
.detail-products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.detail-card {
  min-height: 310px;
  overflow: hidden;
  background: #fffaf1;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 16px 44px rgba(70,35,10,.07);
}
.detail-card img { width: 100%; height: auto; background: #8b1015; }
.detail-card div { padding: 18px; }
.detail-card h3 { font-size: 20px; margin-bottom: 8px; }
.buyback-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 34px; align-items: start; }
.buyback-main {
  padding: 34px;
  background: #fffaf1;
  border: 1px solid rgba(211,173,120,.4);
  border-radius: 8px;
  box-shadow: 0 18px 50px rgba(70,35,10,.08);
}
.buyback-main p { margin-top: 16px; font-size: 18px; }
.formula-large { margin-top: 22px; padding: 26px; border-radius: 8px; background: var(--deep); color: #fff8ed; }
.formula-large b { display: block; margin: 8px 0; color: var(--gold); font-size: 34px; }
.rule-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.rule-card {
  min-height: 138px;
  padding: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.rule-card strong { display: block; margin-bottom: 10px; color: var(--wine); font-size: 18px; }
.rule-card span { color: var(--muted); line-height: 1.75; }
.process { margin-top: 44px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.process div {
  min-height: 108px;
  padding: 18px;
  border-radius: 8px;
  background: rgba(165,30,37,.08);
  border: 1px solid var(--line);
}
.process strong { display: block; color: var(--wine); margin-bottom: 8px; }
.site-footer { padding: 34px 22px; background: #2f2b29; color: rgba(255,248,237,.72); text-align: center; }
@media (max-width: 900px) {
  .nav { height: auto; min-height: 68px; align-items: flex-start; flex-direction: column; gap: 10px; padding: 12px 18px; }
  .nav-links { flex-wrap: wrap; gap: 14px; }
  .hero, .hero-copy, .hero-poster, .section-head, .theme-grid, .buyback-band .inner, .series-detail, .detail-products, .buyback-layout, .rule-list, .process { display: block; }
  .hero-copy { padding: 70px 18px 34px; }
  .hero-poster { min-height: 520px; }
  .proof, .product-wall, .buyback-points { grid-template-columns: 1fr; }
  .section { padding: 52px 18px; }
  .theme-card, .detail-card, .process div, .rule-card { margin-top: 16px; }
  .story-text { columns: 1; }
}