:root {
  --bg: #151419;
  --bg-alt: #1c1a22;
  --card: #23202b;
  --text: #f3efe6;
  --muted: #a39d92;
  --gold: #d9b56f;
  --gold-deep: #a9803f;
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  line-height: 1.6;
}

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

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px clamp(16px, 5vw, 64px);
  background: rgb(21 20 25 / 85%);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgb(255 255 255 / 6%);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 18px;
}

.brand img {
  border-radius: 8px;
}

.nav nav {
  display: flex;
  gap: clamp(12px, 3vw, 32px);
  font-size: 14px;
  color: var(--muted);
}

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

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: clamp(64px, 12vw, 140px) 24px;
  background: radial-gradient(ellipse at top, rgb(169 128 63 / 22%), transparent 60%);
}

.hero-logo {
  width: clamp(112px, 20vw, 160px);
  height: auto;
}

.hero h1 {
  margin: 16px 0 4px;
  font-size: clamp(40px, 8vw, 64px);
  letter-spacing: 0.2em;
  background: linear-gradient(135deg, #f6e3b4, var(--gold), var(--gold-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tagline {
  margin: 0;
  color: var(--gold);
  letter-spacing: 0.3em;
}

.lead {
  max-width: 520px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 15px;
  border: 1px solid transparent;
}

.btn.primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-deep));
  color: #1a1610;
  font-weight: 600;
}

.btn.ghost {
  border-color: rgb(217 181 111 / 50%);
  color: var(--gold);
}

.btn.disabled {
  border-color: rgb(255 255 255 / 12%);
  color: var(--muted);
  cursor: default;
}

.section {
  padding: clamp(56px, 10vw, 96px) clamp(16px, 5vw, 64px);
  text-align: center;
}

.section.alt {
  background: var(--bg-alt);
}

.section h2 {
  margin: 0 0 32px;
  font-size: clamp(26px, 4vw, 34px);
  letter-spacing: 0.1em;
}

.muted {
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  max-width: 1080px;
  margin: 0 auto;
}

.card {
  padding: 28px 24px;
  background: var(--card);
  border: 1px solid rgb(217 181 111 / 12%);
  border-radius: var(--radius);
  text-align: left;
}

.card h3 {
  margin: 0 0 8px;
  color: var(--gold);
  font-size: 18px;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

@media (width <= 480px) {
  .nav {
    gap: 12px;
  }

  .brand span {
    display: none;
  }

  .nav nav {
    gap: 14px;
  }
}

.nav nav a[aria-current='page'] {
  color: var(--gold);
}

.legal {
  max-width: 820px;
  margin: 0 auto;
  padding: clamp(32px, 6vw, 64px) clamp(16px, 5vw, 32px);
}

.legal h1 {
  margin: 0 0 24px;
  color: var(--gold);
  font-size: clamp(24px, 4vw, 30px);
}

.legal-body {
  color: #d8d2c6;
  font-size: 15px;
  line-height: 1.85;
  overflow-wrap: anywhere;
}

.legal-body p {
  margin: 0 0 10px;
}

.legal-body strong,
.legal-body b {
  color: var(--text);
}

.legal-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
}

.legal-body th,
.legal-body td {
  padding: 8px;
  border: 1px solid rgb(255 255 255 / 12%);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 0 0 8px;
}

.footer p {
  margin: 4px 0;
}

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

.footer {
  padding: 32px 16px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid rgb(255 255 255 / 6%);
}