:root {
  --ink: #2d2926;
  --muted: #746a62;
  --line: #e7ded3;
  --paper: #fbf8f3;
  --white: #fffdf9;
  --gold: #d9974d;
  --deep: #231f1d;
  --soft: #f3eee7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(18px, 5vw, 72px);
  background: rgba(251, 248, 243, .9);
  border-bottom: 1px solid rgba(231, 222, 211, .9);
  backdrop-filter: blur(16px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 15px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .04em;
}

.brand img {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  object-fit: cover;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2.4vw, 30px);
  color: var(--muted);
  font-size: 15px;
}

.nav a:hover,
.footer a:hover {
  color: var(--gold);
}

.hero {
  min-height: 78vh;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
  align-items: center;
  gap: clamp(28px, 5vw, 70px);
  padding: clamp(54px, 8vw, 110px) clamp(20px, 6vw, 92px);
  background:
    radial-gradient(circle at 76% 26%, rgba(217, 151, 77, .18), transparent 30%),
    linear-gradient(135deg, #fffaf1 0%, #f2e8dc 100%);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: 13px;
  font-weight: 700;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 22px;
  font-size: clamp(40px, 7vw, 82px);
  line-height: 1.08;
  letter-spacing: -.04em;
}

h2 {
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.18;
  letter-spacing: -.03em;
}

h3 {
  font-size: 30px;
  margin-bottom: 12px;
}

.lead {
  max-width: 720px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 22px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid var(--deep);
}

.button.primary {
  background: var(--deep);
  color: white;
}

.button.ghost {
  background: rgba(255, 255, 255, .45);
}

.hero-card {
  padding: clamp(26px, 4vw, 44px);
  border-radius: 36px;
  color: white;
  background: linear-gradient(160deg, #2f2a27, #151311);
  box-shadow: 0 24px 80px rgba(58, 43, 28, .22);
}

.metric {
  display: block;
  margin-bottom: 6px;
  color: var(--gold);
  font-size: clamp(76px, 11vw, 132px);
  line-height: 1;
  font-family: Georgia, serif;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 32px;
}

.mini-grid span {
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 18px;
  color: #f3e4d1;
}

.section,
.page {
  padding: clamp(54px, 8vw, 96px) clamp(20px, 6vw, 92px);
}

.section-title {
  margin-bottom: 30px;
}

.product-feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.product-card {
  overflow: hidden;
  display: grid;
  grid-template-rows: auto 1fr;
  border: 1px solid var(--line);
  border-radius: 34px;
  background: var(--white);
}

.product-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: center;
}

.product-card div {
  padding: 28px;
}

.tag {
  display: inline-flex;
  margin-bottom: 12px;
  padding: 5px 12px;
  border-radius: 999px;
  color: #8d5f2e;
  background: #f8eadb;
  font-size: 13px;
  font-weight: 700;
}

.product-card p,
.catalog-item p,
.benefit-grid p,
.reason-list p,
.report-card p,
.contact-hero p {
  color: var(--muted);
}

.product-card a,
.card-links a {
  color: #8d5f2e;
  font-weight: 700;
}

.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.card-links a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 13px;
  border: 1px solid rgba(217, 151, 77, .36);
  border-radius: 999px;
  background: #fff8ef;
  font-size: 14px;
}

.card-links a:first-child {
  color: white;
  background: var(--deep);
  border-color: var(--deep);
}

.split-section {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 38px;
  background: var(--deep);
  color: white;
}

.reason-list {
  display: grid;
  gap: 18px;
}

.reason-list div {
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 24px;
}

.reason-list strong {
  color: #f4d1a4;
  font-size: 20px;
}

.page-hero,
.contact-hero {
  max-width: 860px;
  margin: 0 auto 46px;
  text-align: center;
}

.page-hero h1,
.contact-hero h1 {
  font-size: clamp(42px, 6vw, 72px);
}

.catalog,
.report-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.catalog-item,
.report-card {
  display: block;
  min-height: 210px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--white);
}

.catalog-item.highlight,
.report-card:hover {
  border-color: rgba(217, 151, 77, .6);
  box-shadow: 0 18px 50px rgba(83, 62, 39, .08);
}

.catalog-item span,
.benefit-grid span,
.report-card span {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--gold);
  font-size: 38px;
  line-height: 1;
  font-family: Georgia, serif;
}

.detail-hero {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  align-items: center;
  gap: clamp(28px, 5vw, 70px);
  margin-bottom: 52px;
}

.detail-hero img {
  width: 100%;
  border-radius: 34px;
  border: 1px solid var(--line);
  box-shadow: 0 24px 80px rgba(58, 43, 28, .12);
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.benefit-grid article {
  min-height: 280px;
  padding: 24px;
  border-radius: 28px;
  background: var(--white);
  border: 1px solid var(--line);
}

.report-card h2 {
  font-size: 26px;
}

.contact-box {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  margin-top: 34px;
  padding: 28px;
  border-radius: 34px;
  background: var(--white);
  border: 1px solid var(--line);
  text-align: left;
}

.qr-placeholder {
  display: grid;
  place-items: center;
  min-height: 220px;
  border-radius: 24px;
  color: var(--muted);
  background:
    linear-gradient(45deg, rgba(217, 151, 77, .12) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(217, 151, 77, .12) 25%, transparent 25%),
    var(--soft);
  text-align: center;
  font-weight: 700;
}

.wechat-qr {
  width: 100%;
  min-height: 220px;
  border-radius: 24px;
  object-fit: cover;
  object-position: center;
  background: white;
  border: 1px solid var(--line);
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(20px, 6vw, 92px);
  color: #eadfce;
  background: var(--deep);
}

.footer p {
  margin: 0;
}

@media (max-width: 860px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero,
  .product-feature-grid,
  .split-section,
  .catalog,
  .report-list,
  .detail-hero,
  .benefit-grid,
  .contact-box {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .benefit-grid article {
    min-height: auto;
  }
}

@media (max-width: 520px) {
  .brand img {
    width: 48px;
    height: 48px;
  }

  .nav {
    font-size: 14px;
  }

  .mini-grid {
    grid-template-columns: 1fr;
  }

  .footer {
    flex-direction: column;
  }
}