:root {
  --bg: #0f131b; --panel: #171d29; --line: #2a3242; --text: #e8ebf2; --dim: #9aa3b5;
  --gold: #f0c45a; --gold2: #ffe7a0; --gold3: #b0802c; --green: #4fd29a;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif; line-height: 1.7; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }
.hero { background: radial-gradient(1200px 500px at 70% 30%, #2a2414 0%, var(--bg) 60%); border-bottom: 1px solid var(--line); }
.hero-in { display: flex; align-items: center; gap: 24px; padding: 56px 20px 40px; }
.hero-text { flex: 1 1 55%; }
.hero-art { flex: 0 1 44%; width: 44%; max-width: 480px; height: auto; border-radius: 18px; border: 1px solid var(--line); }
.tag { color: var(--gold); letter-spacing: 2px; font-size: 14px; margin: 0 0 8px; }
h1 { font-size: 46px; line-height: 1.2; margin: 0 0 16px; color: var(--gold2); }
h1 .dot { color: var(--gold); padding: 0 4px; }
.lead { font-size: 24px; margin: 0 0 12px; font-weight: 600; }
.sub { color: var(--dim); margin: 0 0 24px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.btn { display: inline-block; padding: 10px 18px; border-radius: 10px; background: linear-gradient(180deg, var(--gold), var(--gold3));
  color: #1b1408; font-weight: 700; }
.btn.ghost { background: transparent; color: var(--gold); border: 1px solid var(--gold3); }
main section { padding: 36px 0 8px; }
h2 { font-size: 26px; margin: 0 0 18px; color: var(--gold2); }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.grid2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; }
.card b { color: var(--gold); font-size: 17px; }
.card p { margin: 6px 0 0; color: var(--dim); }
.tier .tname { display: block; font-size: 20px; font-weight: 700; color: var(--text); }
.tier .trisk { display: block; color: var(--gold); font-size: 18px; margin-top: 4px; }
.tier.hot { border-color: var(--gold3); box-shadow: 0 0 0 1px var(--gold3) inset; }
.num .big { display: block; font-size: 36px; font-weight: 800; color: var(--green); }
.steps { margin: 0; padding-left: 22px; }
.steps li { margin: 6px 0; }
.steps b { color: var(--gold); }
.note { color: var(--dim); font-size: 14px; margin: 12px 0 0; }
footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 24px 0 40px; color: var(--dim); font-size: 14px; }
footer p { margin: 4px 0; }
footer .small { font-size: 12px; }
@media (max-width: 760px) {
  .hero-in { flex-direction: column-reverse; padding-top: 28px; }
  .hero-art { width: 70%; }
  h1 { font-size: 34px; }
  .lead { font-size: 20px; }
  .grid4, .grid3, .grid2 { grid-template-columns: 1fr; }
}