/* XS Select — 全球华人期货交易员选拔平台 */
:root {
  --bg: #0a0e1a;
  --bg2: #0e1424;
  --card: #131a2e;
  --card2: #18203a;
  --border: #232c4a;
  --gold: #f0b90b;
  --gold-dim: #c99509;
  --green: #2ebd85;
  --red: #f6465d;
  --text: #eaecef;
  --text-dim: #9aa4bf;
  --text-faint: #6b7594;
  --radius: 14px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--gold); text-decoration: none; }
a:hover { color: #ffd34d; }
img { max-width: 100%; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* ===== 顶部导航 ===== */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,14,26,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1120px; margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; justify-content: space-between;
  height: 62px;
}
.logo { font-size: 20px; font-weight: 800; letter-spacing: .5px; color: var(--text); }
.logo span { color: var(--gold); }
.nav-links { display: flex; gap: 4px; align-items: center; }
.nav-links a {
  color: var(--text-dim); font-size: 14.5px; padding: 8px 13px;
  border-radius: 8px; transition: all .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); background: var(--card); }
.nav-cta {
  background: var(--gold) !important; color: #1a1a1a !important;
  font-weight: 700;
}
.nav-cta:hover { background: #ffd34d !important; }
.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 24px; cursor: pointer; }
@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none; position: absolute; top: 62px; left: 0; right: 0;
    flex-direction: column; background: var(--bg2); padding: 12px 20px 20px;
    border-bottom: 1px solid var(--border); align-items: stretch;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 14px; }
}

/* ===== Hero ===== */
.hero {
  padding: 90px 20px 70px;
  text-align: center;
  background:
    radial-gradient(ellipse 60% 45% at 50% -5%, rgba(240,185,11,.13), transparent),
    radial-gradient(ellipse 40% 35% at 85% 20%, rgba(46,189,133,.07), transparent);
}
.hero-badge {
  display: inline-block; font-size: 13.5px; color: var(--gold);
  border: 1px solid rgba(240,185,11,.4); border-radius: 999px;
  padding: 5px 16px; margin-bottom: 26px; background: rgba(240,185,11,.06);
}
.hero h1 {
  font-size: clamp(30px, 5.5vw, 52px); font-weight: 900;
  line-height: 1.25; letter-spacing: .5px;
}
.hero h1 .hl { color: var(--gold); }
.hero p.sub {
  margin: 22px auto 0; max-width: 640px;
  font-size: clamp(15px, 2.2vw, 18px); color: var(--text-dim);
}
.hero-btns { margin-top: 38px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 14px 34px; border-radius: 10px;
  font-size: 16px; font-weight: 700; transition: all .2s; cursor: pointer; border: none;
}
.btn-gold { background: var(--gold); color: #1a1a1a; }
.btn-gold:hover { background: #ffd34d; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(240,185,11,.3); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }
.hero-stats {
  margin: 56px auto 0; max-width: 860px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
}
.hero-stat {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 12px;
}
.hero-stat b { display: block; font-size: 26px; color: var(--gold); font-weight: 800; }
.hero-stat span { font-size: 13px; color: var(--text-dim); }
@media (max-width: 720px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero { padding: 60px 20px 50px; }
}

/* ===== 通用区块 ===== */
.section { padding: 72px 0; }
.section.alt { background: var(--bg2); }
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.sec-head .tag { color: var(--gold); font-size: 14px; font-weight: 700; letter-spacing: 2px; }
.sec-head h2 { font-size: clamp(24px, 4vw, 36px); font-weight: 800; margin: 10px 0 14px; }
.sec-head p { color: var(--text-dim); font-size: 16px; }

/* ===== 卡片网格 ===== */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; } }
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px 26px;
  transition: all .25s;
}
.card:hover { border-color: rgba(240,185,11,.45); transform: translateY(-3px); }
.card .ico { font-size: 30px; margin-bottom: 14px; }
.card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.card p { color: var(--text-dim); font-size: 14.5px; }

/* ===== 档位价格卡 ===== */
.plans { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; align-items: stretch; }
@media (max-width: 900px) { .plans { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; } }
.plan {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 18px; padding: 34px 30px; position: relative;
  display: flex; flex-direction: column;
}
.plan.hot { border-color: var(--gold); box-shadow: 0 0 40px rgba(240,185,11,.12); }
.plan .flag {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--gold); color: #1a1a1a; font-size: 12.5px; font-weight: 800;
  padding: 4px 16px; border-radius: 999px; white-space: nowrap;
}
.plan h3 { font-size: 20px; font-weight: 800; }
.plan .cap { color: var(--text-dim); font-size: 14px; margin-top: 4px; }
.plan .cap b { color: var(--text); font-size: 18px; }
.plan .price { margin: 20px 0 4px; }
.plan .price b { font-size: 44px; font-weight: 900; color: var(--gold); }
.plan .price span { color: var(--text-faint); font-size: 14px; }
.plan .reward {
  font-size: 14px; color: var(--green); font-weight: 700; margin-bottom: 18px;
}
.plan ul { list-style: none; margin: 8px 0 26px; flex: 1; }
.plan ul li {
  padding: 8px 0 8px 26px; position: relative; font-size: 14.5px;
  color: var(--text-dim); border-bottom: 1px dashed var(--border);
}
.plan ul li:last-child { border-bottom: none; }
.plan ul li::before { content: "✓"; position: absolute; left: 2px; color: var(--green); font-weight: 800; }
.plan .btn { text-align: center; }

/* ===== 步骤流程 ===== */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; counter-reset: step; }
@media (max-width: 820px) { .steps { grid-template-columns: 1fr; } }
.step {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 30px 26px; position: relative;
}
.step::before {
  counter-increment: step; content: counter(step);
  position: absolute; top: -16px; left: 24px;
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--gold); color: #1a1a1a;
  font-weight: 900; font-size: 17px;
  display: flex; align-items: center; justify-content: center;
}
.step h3 { margin: 8px 0 10px; font-size: 18px; }
.step p { color: var(--text-dim); font-size: 14.5px; }

/* ===== 规则/文章内容页 ===== */
.article { max-width: 860px; margin: 0 auto; padding: 56px 20px 80px; }
.article h1 { font-size: clamp(26px, 4.5vw, 38px); font-weight: 900; margin-bottom: 12px; }
.article .lead { color: var(--text-dim); font-size: 16.5px; margin-bottom: 40px; }
.article h2 {
  font-size: 23px; font-weight: 800; margin: 46px 0 18px;
  padding-left: 14px; border-left: 4px solid var(--gold);
}
.article h3 { font-size: 18px; font-weight: 700; margin: 30px 0 12px; color: var(--gold); }
.article p { margin: 12px 0; color: #c8cede; font-size: 15.5px; }
.article ul, .article ol { margin: 12px 0 12px 24px; color: #c8cede; font-size: 15.5px; }
.article li { margin: 7px 0; }
.article .box {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px 26px; margin: 20px 0;
}
.article .box.warn { border-color: rgba(246,70,93,.5); background: rgba(246,70,93,.06); }
.article .box.gold { border-color: rgba(240,185,11,.5); background: rgba(240,185,11,.05); }
.article .box.green { border-color: rgba(46,189,133,.5); background: rgba(46,189,133,.05); }
.article table {
  width: 100%; border-collapse: collapse; margin: 22px 0;
  font-size: 14.5px; background: var(--card); border-radius: var(--radius); overflow: hidden;
}
.article th { background: var(--card2); color: var(--gold); padding: 13px 14px; text-align: left; font-weight: 700; }
.article td { padding: 12px 14px; border-top: 1px solid var(--border); color: #c8cede; }

/* ===== FAQ 手风琴 ===== */
.faq-item {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; margin-bottom: 14px; overflow: hidden;
}
.faq-q {
  width: 100%; text-align: left; background: none; border: none;
  color: var(--text); font-size: 16.5px; font-weight: 700;
  padding: 20px 56px 20px 24px; cursor: pointer; position: relative;
}
.faq-q::after {
  content: "+"; position: absolute; right: 22px; top: 50%;
  transform: translateY(-50%); font-size: 24px; color: var(--gold); transition: transform .25s;
}
.faq-item.open .faq-q::after { transform: translateY(-50%) rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a-inner { padding: 0 24px 22px; color: var(--text-dim); font-size: 15px; }
.faq-a-inner p { margin: 8px 0; }

/* ===== 支付信息块 ===== */
.pay-box {
  background: var(--card); border: 1px solid rgba(240,185,11,.4);
  border-radius: var(--radius); padding: 26px; margin: 24px 0;
}
.pay-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 0; border-bottom: 1px dashed var(--border); flex-wrap: wrap;
}
.pay-row:last-child { border-bottom: none; }
.pay-row .k { color: var(--text-dim); font-size: 14px; min-width: 90px; }
.pay-row .v { font-family: "SF Mono", Consolas, monospace; font-size: 14px; word-break: break-all; flex: 1; }
.copy-btn {
  background: var(--card2); border: 1px solid var(--border); color: var(--gold);
  padding: 7px 16px; border-radius: 8px; font-size: 13px; font-weight: 700;
  cursor: pointer; white-space: nowrap; transition: all .2s;
}
.copy-btn:hover { border-color: var(--gold); }

/* ===== CTA 条 ===== */
.cta-band {
  background: linear-gradient(120deg, rgba(240,185,11,.14), rgba(240,185,11,.04));
  border: 1px solid rgba(240,185,11,.35);
  border-radius: 20px; padding: 48px 40px; text-align: center;
  margin: 20px 0;
}
.cta-band h2 { font-size: clamp(22px, 3.5vw, 30px); font-weight: 800; margin-bottom: 12px; }
.cta-band p { color: var(--text-dim); margin-bottom: 28px; }

/* ===== 页脚 ===== */
.footer {
  border-top: 1px solid var(--border); background: var(--bg2);
  padding: 50px 0 30px; margin-top: 40px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 30px; }
@media (max-width: 820px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }
.footer h4 { font-size: 15px; font-weight: 700; margin-bottom: 14px; color: var(--text); }
.footer a { display: block; color: var(--text-dim); font-size: 14px; margin: 8px 0; }
.footer a:hover { color: var(--gold); }
.footer .desc { color: var(--text-dim); font-size: 14px; max-width: 320px; }
.footer-bottom {
  margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--border);
  color: var(--text-faint); font-size: 13px; text-align: center;
}
.risk-note {
  font-size: 12.5px; color: var(--text-faint); line-height: 1.7;
  margin-top: 14px;
}