:root {
  --ink: #142a31;
  --text: #31494f;
  --muted: #73868b;
  --line: rgba(20, 42, 49, 0.1);
  --paper: #f6f1e6;
  --card: rgba(255, 252, 246, 0.86);
  --white: #ffffff;
  --lake: #7ea7a8;
  --lake-deep: #3f6369;
  --sand: #d9b588;
  --sunset: #bf7249;
  --gold: #b98c5b;
  --shadow: 0 18px 50px rgba(20, 42, 49, 0.1);
  --shadow-soft: 0 10px 30px rgba(20, 42, 49, 0.06);
  --radius: 28px;
  --max: 1100px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  font-family: "Noto Serif SC", "Source Han Serif SC", "PingFang SC", "Microsoft YaHei", serif;
  background:
    radial-gradient(circle at top left, rgba(126, 167, 168, 0.18), transparent 34%),
    radial-gradient(circle at top right, rgba(217, 181, 136, 0.14), transparent 28%),
    linear-gradient(180deg, #f4eee2 0%, #faf7f1 44%, #f5f0e8 100%);
}

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

.wrap {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(246, 241, 230, 0.74);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
}

.brand-mark {
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.brand-name {
  margin-top: 4px;
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
}

.nav-link {
  color: var(--muted);
  font-size: 14px;
}

.hero {
  padding: 42px 0 24px;
}

.hero-card {
  overflow: hidden;
  border-radius: 38px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.86), rgba(255,255,255,0.54)),
    linear-gradient(160deg, rgba(126, 167, 168, 0.14), rgba(217, 181, 136, 0.09));
  border: 1px solid rgba(255,255,255,0.85);
  box-shadow: var(--shadow);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  align-items: stretch;
}

.hero-copy {
  padding: 40px;
}

.eyebrow {
  display: inline-flex;
  padding: 9px 16px;
  border-radius: 999px;
  background: rgba(255,255,255,0.72);
  border: 1px solid rgba(20, 42, 49, 0.07);
  color: var(--lake-deep);
  font-size: 13px;
}

h1, h2, h3 { margin: 0; color: var(--ink); }

h1 {
  margin-top: 18px;
  font-size: clamp(32px, 4.5vw, 54px);
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.hero-copy p {
  margin: 20px 0 0;
  line-height: 1.9;
  font-size: 17px;
}

.hero-image {
  min-height: 420px;
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border-radius: 999px;
  font-size: 14px;
}

.btn-primary {
  background: linear-gradient(135deg, #d6b183, #b7774e);
  color: #fffaf2;
}

.btn-secondary {
  background: rgba(255,255,255,0.78);
  border: 1px solid rgba(20, 42, 49, 0.08);
  color: var(--lake-deep);
}

section {
  padding: 22px 0;
}

.section-head {
  margin-bottom: 22px;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--sunset);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.section-head h2 {
  margin-top: 12px;
  font-size: clamp(28px, 3.5vw, 40px);
  line-height: 1.12;
}

.section-copy {
  margin-top: 14px;
  max-width: 720px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--text);
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.card {
  padding: 26px;
  border-radius: 28px;
  background: var(--card);
  border: 1px solid rgba(20, 42, 49, 0.08);
  box-shadow: var(--shadow-soft);
}

.card p {
  margin: 14px 0 0;
  line-height: 1.9;
  font-size: 15px;
}

.line-list {
  display: grid;
  gap: 14px;
}

.line-item {
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(20, 42, 49, 0.08);
}

.line-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.line-item strong {
  display: block;
  color: var(--ink);
  font-size: 16px;
}

.line-item span {
  display: block;
  margin-top: 8px;
  line-height: 1.85;
  font-size: 15px;
}

.visual-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 22px;
}

.visual-stack {
  display: grid;
  gap: 22px;
}

.visual-card {
  overflow: hidden;
  border-radius: 28px;
  background: var(--card);
  border: 1px solid rgba(20, 42, 49, 0.08);
  box-shadow: var(--shadow-soft);
}

.visual-card img {
  width: 100%;
  height: 100%;
  min-height: 240px;
  object-fit: cover;
}

.visual-caption {
  padding: 18px 22px 22px;
}

.visual-caption strong {
  display: block;
  color: var(--ink);
  font-size: 20px;
}

.visual-caption span {
  display: block;
  margin-top: 8px;
  line-height: 1.85;
  font-size: 15px;
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.faq-item {
  padding: 24px;
  border-radius: 26px;
  background: var(--card);
  border: 1px solid rgba(20, 42, 49, 0.08);
  box-shadow: var(--shadow-soft);
}

.faq-item h3 {
  font-size: 20px;
  line-height: 1.35;
}

.faq-item p {
  margin: 12px 0 0;
  line-height: 1.9;
  font-size: 15px;
}

.wechat-box {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 22px;
  align-items: stretch;
}

.wechat-note {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.wechat-note span {
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  line-height: 1.8;
  font-size: 15px;
}

.wechat-note span:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.wechat-card {
  padding: 24px;
  border-radius: 28px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
}

.wechat-card strong {
  display: block;
  color: var(--white);
  font-size: 18px;
}

.wechat-card p {
  margin: 10px 0 0;
  line-height: 1.8;
  font-size: 14px;
}

.wechat-card img {
  width: 180px;
  max-width: 100%;
  margin-top: 18px;
  border-radius: 18px;
  background: #fff;
}

.cta {
  padding: 28px 0 90px;
}

.cta-card {
  padding: 28px;
  border-radius: 30px;
  background: linear-gradient(135deg, rgba(20, 42, 49, 0.95), rgba(53, 87, 91, 0.95));
  color: rgba(255,255,255,0.86);
  box-shadow: var(--shadow);
}

.cta-card h2 {
  color: var(--white);
  font-size: 30px;
}

.cta-card p {
  margin: 14px 0 0;
  line-height: 1.85;
}

.cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.cta-links a,
.cta-links button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  border-radius: 999px;
  background: rgba(255,255,255,0.1);
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.18);
  font: inherit;
  cursor: pointer;
}

.footer {
  padding: 22px 0 36px;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.mobile-dock {
  display: none;
}

@media (max-width: 860px) {
  .hero-grid,
  .visual-grid,
  .content-grid,
  .faq-grid,
  .wechat-box {
    grid-template-columns: 1fr;
  }

  .hero-image {
    min-height: 320px;
  }
}

@media (max-width: 760px) {
  .nav-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    padding-top: 28px;
  }

  .hero-copy {
    padding: 24px;
  }

  h1 {
    font-size: 34px;
  }

  .hero-copy p,
  .section-copy,
  .card p,
  .line-item span,
  .cta-card p {
    font-size: 15px;
  }

  .hero-actions a,
  .hero-actions button,
  .cta-links a,
  .cta-links button {
    flex: 1 1 calc(50% - 8px);
  }

  .mobile-dock {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 40;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    padding: 12px 14px calc(12px + env(safe-area-inset-bottom, 0px));
    background: rgba(20, 42, 49, 0.92);
    backdrop-filter: blur(18px);
    border-top: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 -12px 28px rgba(20, 42, 49, 0.18);
  }

  .mobile-dock a,
  .mobile-dock button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 12px;
    border: 0;
    border-radius: 999px;
    background: rgba(255,255,255,0.08);
    color: var(--white);
    font: inherit;
  }

  .mobile-dock .mobile-dock-primary {
    background: linear-gradient(135deg, #d6b183, #b7774e);
    color: #fffaf2;
  }
}