:root {
  --accent: #FF5C7A;
  --accent2: #FF9F45;
  --bg: #0B0E14;
  --bg2: #11161F;
  --card: #151B26;
  --line: rgba(255,255,255,.09);
  --tx: #E9EDF5;
  --tx2: #9BA6B8;
  --radius: 16px;
  --wrap: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--tx);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.wrap.narrow { max-width: 760px; }
.center { text-align: center; }

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 16px; top: 16px;
  z-index: 99;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
}

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: saturate(160%) blur(14px);
  background: rgba(11,14,20,.78);
  border-bottom: 1px solid var(--line);
}
.nav-in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 66px;
  gap: 20px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 22px; height: 22px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 0 1px rgba(255,255,255,.14) inset;
}
.logo-text { font-weight: 650; letter-spacing: .2px; }
.nav nav { display: flex; align-items: center; gap: 8px; }
.nav nav a {
  padding: 8px 14px;
  border-radius: 10px;
  color: var(--tx2);
  font-size: 14.5px;
  transition: color .18s, background .18s;
}
.nav nav a:hover { color: var(--tx); background: rgba(255,255,255,.05); }

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 560;
  border: 1px solid transparent;
  transition: transform .16s, border-color .18s, background .18s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
}
.btn-ghost {
  border-color: var(--line);
  color: var(--tx);
}
.btn-ghost:hover { border-color: var(--accent); }
.btn-nav {
  border-color: rgba(255,255,255,.16);
  color: var(--tx) !important;
  padding: 8px 16px;
}
.btn-nav:hover { border-color: var(--accent); background: transparent !important; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding: 108px 0 84px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: -30% 20% auto -10%;
  height: 560px;
  background: radial-gradient(46% 46% at 30% 40%, color-mix(in srgb, var(--accent) 26%, transparent), transparent 70%);
  filter: blur(20px);
  pointer-events: none;
}
.hero .wrap { position: relative; }
.kicker {
  margin: 0 0 18px;
  font-size: 12.5px;
  letter-spacing: 2.4px;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 620;
}
.hero h1 {
  margin: 0 0 20px;
  font-size: clamp(34px, 5.4vw, 58px);
  line-height: 1.18;
  letter-spacing: -.5px;
  font-weight: 700;
}
.lede {
  margin: 0 0 32px;
  max-width: 620px;
  font-size: clamp(16px, 1.5vw, 18.5px);
  color: var(--tx2);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-note {
  margin: 28px 0 0;
  font-size: 13px;
  color: var(--tx2);
  opacity: .8;
}

/* ---------- sections ---------- */
.section { padding: 78px 0; border-top: 1px solid var(--line); }
.section-alt { background: var(--bg2); }
.section h2 {
  margin: 0 0 34px;
  font-size: clamp(24px, 2.9vw, 34px);
  letter-spacing: -.3px;
  font-weight: 680;
}
.section p { color: var(--tx2); font-size: 16px; }
.section code {
  background: rgba(255,255,255,.07);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1px 6px;
  font-size: 13.5px;
  color: var(--tx);
}

/* ---------- cards ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(272px, 1fr));
  gap: 18px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: border-color .2s, transform .2s;
}
.card:hover { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); transform: translateY(-2px); }
.card h3 {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 640;
}
.card p { margin: 0; color: var(--tx2); font-size: 15px; }

/* ---------- footer ---------- */
.foot {
  border-top: 1px solid var(--line);
  background: var(--bg2);
  padding: 54px 0 0;
}
.foot-in {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 36px;
}
.foot-brand { margin: 0 0 6px; font-weight: 660; font-size: 17px; }
.foot-tag { margin: 0; color: var(--tx2); font-size: 14px; }
.foot-h {
  margin: 0 0 12px;
  font-size: 12.5px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--tx2);
  font-weight: 620;
}
.foot ul { margin: 0; padding: 0; list-style: none; }
.foot li { margin-bottom: 9px; }
.foot li a { color: var(--tx2); font-size: 14px; transition: color .18s; }
.foot li a:hover { color: var(--accent); }
.foot-bot {
  margin-top: 44px;
  padding: 20px 24px 26px;
  border-top: 1px solid var(--line);
}
.foot-bot p { margin: 0; color: var(--tx2); font-size: 13px; opacity: .85; }

@media (max-width: 760px) {
  .foot-in { grid-template-columns: 1fr; gap: 28px; }
  .nav nav a:not(.btn) { display: none; }
  .hero { padding: 76px 0 60px; }
  .section { padding: 58px 0; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}