/* ===== Nomads 游牧者 宣传站 · 设计令牌 ===== */
:root {
  --brand-start: #4F7CFF;
  --brand-end: #25D0C0;
  --brand-grad: linear-gradient(90deg, #4F7CFF, #25D0C0);
  --text-primary: #1F2937;
  --text-secondary: #6B7280;
  --text-hint: #9CA3AF;
  --page-bg: #F5F6FA;
  --surface: #FFFFFF;
  --divider: #EEF0F4;
  --chip-bg: #EDF2FF;
  --chip-text: #4F7CFF;
  --promo: #12B39F;
  --warning-bg: #FFF5F0;
  --warning-text: #F5573E;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-md: 12px;
  --shadow: 0 10px 30px rgba(31, 41, 55, .08);
  --shadow-sm: 0 4px 14px rgba(31, 41, 55, .06);
  --maxw: 1140px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text-primary);
  background: var(--page-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .08em;
  color: var(--chip-text); background: var(--chip-bg);
  padding: 5px 12px; border-radius: 999px; margin-bottom: 14px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 48px; padding: 0 28px; border-radius: var(--radius-xl);
  font-size: 15px; font-weight: 600; cursor: pointer; border: none;
  transition: transform .15s ease, box-shadow .15s ease, opacity .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--brand-grad); color: #fff; box-shadow: 0 8px 20px rgba(79,124,255,.28); }
.btn-primary:hover { box-shadow: 0 10px 26px rgba(79,124,255,.38); }
.btn-outline { background: #fff; color: var(--brand-start); border: 1.5px solid var(--divider); }
.btn-outline:hover { border-color: var(--brand-start); }
.btn-ghost { background: var(--chip-bg); color: var(--brand-start); height: 40px; padding: 0 18px; }

/* ===== 导航 ===== */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.82); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--divider);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { flex: none; }
.brand-name { font-size: 19px; font-weight: 700; color: var(--text-primary); display: flex; align-items: baseline; gap: 6px; }
.brand-name small { font-size: 12px; font-weight: 600; color: var(--text-hint); letter-spacing: .04em; }
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { font-size: 15px; color: var(--text-secondary); font-weight: 500; transition: color .15s; }
.nav-links a:hover { color: var(--brand-start); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 24px; height: 2.5px; background: var(--text-primary); border-radius: 2px; transition: .25s; }

/* ===== Hero ===== */
.hero { background: radial-gradient(1200px 500px at 80% -10%, rgba(37,208,192,.18), transparent), var(--page-bg); padding: 70px 0 80px; }
.hero-inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.hero h1 { font-size: 52px; line-height: 1.12; font-weight: 800; letter-spacing: -.01em; }
.hero .lead { margin: 20px 0 28px; font-size: 17px; color: var(--text-secondary); max-width: 520px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { list-style: none; display: flex; gap: 36px; margin-top: 40px; }
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats strong { font-size: 30px; font-weight: 800; background: var(--brand-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-stats strong small { font-size: 16px; }
.hero-stats span { font-size: 13px; color: var(--text-hint); }

/* Hero 视觉卡 */
.hero-visual { display: flex; justify-content: center; }
.glass-card {
  width: 320px; background: var(--surface); border-radius: var(--radius-lg);
  box-shadow: var(--shadow); padding: 24px; border: 1px solid var(--divider);
}
.gc-row { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 15px; color: var(--promo); }
.gc-row .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--promo); box-shadow: 0 0 0 4px rgba(18,179,159,.18); }
.gc-big { font-size: 22px; font-weight: 700; margin: 16px 0 18px; color: var(--text-primary); }
.gc-big b { font-size: 40px; background: var(--brand-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.gc-big small { font-size: 13px; color: var(--text-hint); font-weight: 500; }
.gc-line { display: flex; justify-content: space-between; padding: 10px 0; border-top: 1px solid var(--divider); font-size: 14px; }
.gc-line span { color: var(--text-hint); }
.gc-line b { color: var(--text-primary); font-weight: 600; }
.gc-actions { display: flex; gap: 10px; margin-top: 18px; }
.gc-btn { flex: 1; text-align: center; padding: 10px 0; border-radius: var(--radius-md); background: var(--chip-bg); color: var(--chip-text); font-weight: 600; font-size: 14px; }
.gc-btn.gc-warn { background: var(--warning-bg); color: var(--warning-text); }

/* ===== 区块通用 ===== */
.section { padding: 80px 0; }
.section-alt { background: var(--surface); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-head h2 { font-size: 34px; font-weight: 800; letter-spacing: -.01em; }
.section-head p { margin-top: 12px; color: var(--text-secondary); font-size: 16px; }
.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }

/* ===== 业务卡片 ===== */
.card { background: var(--surface); border: 1px solid var(--divider); border-radius: var(--radius-lg); padding: 28px 24px; box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .2s; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card-ico { width: 52px; height: 52px; border-radius: 14px; background: var(--chip-bg); display: flex; align-items: center; justify-content: center; font-size: 26px; margin-bottom: 16px; }
.card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.card p { color: var(--text-secondary); font-size: 14.5px; }

/* ===== 优势 ===== */
.feature { padding: 26px 22px; border-radius: var(--radius-lg); border: 1px solid var(--divider); background: var(--surface); transition: border-color .2s, transform .2s; }
.feature:hover { border-color: var(--brand-start); transform: translateY(-3px); }
.feature-num { font-size: 14px; font-weight: 700; color: var(--brand-start); letter-spacing: .1em; }
.feature h3 { font-size: 18px; margin: 10px 0 8px; }
.feature p { color: var(--text-secondary); font-size: 14.5px; }

/* ===== 多端 ===== */
.ends { gap: 16px; }
.end { background: var(--surface); border: 1px solid var(--divider); border-radius: var(--radius-lg); padding: 26px 14px; text-align: center; box-shadow: var(--shadow-sm); transition: transform .2s; }
.end:hover { transform: translateY(-4px); }
.end-ico { display: block; font-size: 34px; margin-bottom: 10px; }
.end b { display: block; font-size: 16px; }
.end small { color: var(--text-hint); font-size: 12px; }

/* ===== 关于 ===== */
.about-inner { max-width: 820px; margin: 0 auto; }
.about-text { text-align: center; }
.about-text h2 { font-size: 30px; font-weight: 800; margin-bottom: 16px; }
.about-text p { color: var(--text-secondary); font-size: 16px; }
.about-list { list-style: none; margin: 20px auto 0; display: grid; gap: 12px; max-width: 620px; text-align: left; }
.about-list li { color: var(--text-secondary); font-size: 15px; }

/* ===== CTA ===== */
.cta { padding: 80px 0; background: var(--brand-grad); color: #fff; }
.cta-inner { text-align: center; }
.cta h2 { font-size: 32px; font-weight: 800; }
.cta p { margin: 12px 0 28px; opacity: .92; font-size: 16px; }
.cta-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta .btn-primary { background: #fff; color: var(--brand-start); box-shadow: none; }
.cta .btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,.6); }
.cta .btn-outline:hover { border-color: #fff; }

/* ===== 页脚 ===== */
.footer { background: #111827; color: #cbd5e1; padding: 48px 0 28px; }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 24px; padding-bottom: 28px; border-bottom: 1px solid rgba(255,255,255,.08); }
.footer-brand .brand-name { color: #fff; }
.footer-brand .brand-name small { color: #9aa4b2; }
.footer-brand p { margin-top: 10px; color: #9aa4b2; font-size: 14px; }
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; align-items: center; }
.footer-links a { color: #cbd5e1; font-size: 14px; transition: color .15s; }
.footer-links a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding-top: 22px; font-size: 13px; color: #9aa4b2; }
.beian { color: #9aa4b2; }
.beian:hover { color: #fff; }

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .hero h1 { font-size: 42px; }
  .hero-visual { order: -1; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(3, 1fr); }
  .nav-links {
    position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; gap: 0;
    background: #fff; border-bottom: 1px solid var(--divider); padding: 8px 0;
    max-height: 0; overflow: hidden; transition: max-height .25s ease;
  }
  .nav-links.open { max-height: 360px; }
  .nav-links a { padding: 12px 20px; width: 100%; }
  .nav-toggle { display: flex; }
}
@media (max-width: 560px) {
  .section { padding: 56px 0; }
  .section-head h2 { font-size: 26px; }
  .hero h1 { font-size: 34px; }
  .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr; }
  .hero-stats { gap: 20px; }
}