:root {
  color-scheme: light;
  --blue: #4a90e2;
  --indigo: #667eea;
  --purple: #764ba2;
  --ink: #27314b;
  --muted: #6e7890;
  --card: rgba(255, 255, 255, .94);
  --shadow: 0 18px 50px rgba(32, 43, 86, .14);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-height: 100vh; color: var(--ink); background: #f5f7fc; font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif; }
a { color: inherit; text-decoration: none; }
.page-background { position: fixed; z-index: -2; inset: 0; overflow: hidden; background: linear-gradient(150deg, #4357bd 0%, #596fd4 34%, #724795 72%, #392f64 100%); }
.page-background::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(17,26,68,.08), rgba(15,20,52,.4)); }
.orb { position: absolute; border-radius: 50%; filter: blur(1px); opacity: .38; }
.orb-one { width: 520px; height: 520px; top: -220px; right: -80px; background: radial-gradient(circle at 35% 35%, #83ddff, transparent 65%); }
.orb-two { width: 600px; height: 600px; left: -230px; top: 35%; background: radial-gradient(circle, #b682ec, transparent 68%); }
.orb-three { width: 420px; height: 420px; right: 8%; bottom: -240px; background: radial-gradient(circle, #4bc9da, transparent 67%); }
.grid-lines { position: absolute; inset: 0; opacity: .1; background-image: linear-gradient(rgba(255,255,255,.25) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.25) 1px, transparent 1px); background-size: 56px 56px; transform: perspective(700px) rotateX(62deg) scale(1.4) translateY(28%); transform-origin: bottom; }
.site-header { width: min(1120px, 92vw); height: 82px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; color: #fff; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; color: #5769ce; background: #fff; box-shadow: 0 8px 25px rgba(22,26,65,.25); font-weight: 900; letter-spacing: -.04em; }
.brand-copy strong, .brand-copy small { display: block; }
.brand-copy strong { font-size: 1.1rem; letter-spacing: .01em; }
.brand-copy small { margin-top: 1px; color: rgba(255,255,255,.58); font-size: .48rem; letter-spacing: .16em; }
nav { display: flex; align-items: center; gap: 27px; font-size: .78rem; }
nav a { color: rgba(255,255,255,.72); transition: color .2s, transform .2s; }
nav a:hover { color: #fff; transform: translateY(-1px); }
.nav-login { padding: 9px 18px; border: 1px solid rgba(255,255,255,.45); border-radius: 22px; color: #fff; background: rgba(255,255,255,.09); backdrop-filter: blur(8px); }
main { width: min(1100px, 92vw); margin: 0 auto; }
.hero { min-height: 560px; padding: 104px 0 80px; color: #fff; text-align: center; }
.network-badge { display: inline-flex; align-items: center; gap: 8px; padding: 7px 17px; border: 1px solid rgba(255,255,255,.2); border-radius: 99px; color: rgba(255,255,255,.85); background: rgba(255,255,255,.1); backdrop-filter: blur(10px); font-size: .7rem; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: #5ff0a4; box-shadow: 0 0 12px #5ff0a4; animation: pulse 1.8s infinite; }
.status-dot.offline { background: #ff7180; box-shadow: 0 0 12px #ff7180; }
.hero-eyebrow { margin: 28px 0 7px; color: rgba(255,255,255,.55); font-size: .65rem; font-weight: 700; letter-spacing: .25em; }
.hero h1 { margin: 0; font-size: clamp(2.4rem, 7vw, 4.8rem); letter-spacing: -.045em; line-height: 1.12; text-shadow: 0 5px 25px rgba(23,22,62,.25); }
.hero h1 span { background: linear-gradient(90deg, #fff, #ccecff); background-clip: text; -webkit-background-clip: text; color: transparent; }
.hero-copy { max-width: 630px; margin: 20px auto 29px; color: rgba(255,255,255,.72); font-size: 1rem; line-height: 1.8; }
.hero-actions { display: flex; justify-content: center; gap: 13px; flex-wrap: wrap; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 18px; min-width: 160px; padding: 13px 22px; border-radius: 28px; font-size: .79rem; font-weight: 700; transition: transform .25s, box-shadow .25s, background .25s; }
.button:hover { transform: translateY(-3px); }
.button.primary { color: #5d63c7; background: #fff; box-shadow: 0 10px 30px rgba(25,27,74,.25); }
.button.primary:hover { box-shadow: 0 15px 35px rgba(25,27,74,.36); }
.button.secondary { color: #fff; border: 1px solid rgba(255,255,255,.32); background: rgba(255,255,255,.09); backdrop-filter: blur(9px); }
.button.secondary:hover { background: rgba(255,255,255,.16); }
.hero-meta { display: flex; justify-content: center; gap: 48px; margin-top: 51px; color: rgba(255,255,255,.55); font-size: .68rem; }
.hero-meta span { display: flex; align-items: baseline; gap: 7px; }
.hero-meta b { color: #fff; font-size: .85rem; }
.quickstart, .features, .news { margin-bottom: 34px; }
.section-heading { margin-bottom: 21px; color: #fff; }
.section-heading p { margin: 0 0 4px; color: rgba(255,255,255,.5); font-size: .57rem; font-weight: 800; letter-spacing: .19em; }
.section-heading h2 { margin: 0; font-size: 1.55rem; }
.step-row { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 14px; align-items: center; }
.step-card { min-height: 125px; display: flex; gap: 14px; padding: 23px; border: 1px solid rgba(255,255,255,.17); border-radius: 14px; color: #fff; background: rgba(255,255,255,.1); box-shadow: 0 12px 35px rgba(25,28,72,.15); backdrop-filter: blur(12px); transition: transform .25s, background .25s; }
.step-card:hover { transform: translateY(-4px); background: rgba(255,255,255,.15); }
.step-card > span { display: grid; place-items: center; flex: 0 0 36px; height: 36px; border-radius: 50%; color: #6469cf; background: #fff; font-size: .67rem; font-weight: 900; }
.step-card h3 { margin: 2px 0 7px; font-size: .92rem; }
.step-card p { margin: 0; color: rgba(255,255,255,.64); font-size: .68rem; line-height: 1.6; }
.step-arrow { color: rgba(255,255,255,.34); font-style: normal; }
.features, .news { padding: 34px; border-radius: 18px; background: rgba(245,247,252,.97); box-shadow: var(--shadow); }
.light-heading { color: var(--ink); }
.light-heading p { color: #8b94aa; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 17px; }
.feature-grid article { padding: 25px 23px; border: 1px solid #e9ebf4; border-radius: 13px; background: #fff; box-shadow: 0 7px 22px rgba(42,50,88,.06); transition: transform .25s, box-shadow .25s; }
.feature-grid article:hover { transform: translateY(-5px); box-shadow: 0 13px 30px rgba(42,50,88,.12); }
.feature-icon { display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 17px; border-radius: 12px; color: #fff; background: linear-gradient(135deg, var(--indigo), var(--purple)); font-size: 1.15rem; }
.feature-grid h3 { margin: 0 0 8px; font-size: .92rem; }
.feature-grid p { margin: 0; color: var(--muted); font-size: .7rem; line-height: 1.7; }
.news-list { display: grid; gap: 10px; }
.news-list article { display: grid; grid-template-columns: 105px 1fr; gap: 20px; align-items: start; padding: 18px 20px; border: 1px solid #e9ebf4; border-radius: 12px; background: #fff; }
.news-list time { color: #7a6cd5; font-size: .63rem; font-weight: 800; letter-spacing: .05em; }
.news-list h3 { margin: 0 0 5px; font-size: .82rem; }
.news-list p { margin: 0; color: var(--muted); font-size: .68rem; line-height: 1.6; }
footer { width: min(1100px, 92vw); margin: 30px auto 0; padding: 28px 2px 34px; display: flex; justify-content: space-between; align-items: center; color: rgba(255,255,255,.55); font-size: .65rem; }
footer div { display: flex; align-items: baseline; gap: 11px; }
footer strong { color: #fff; font-size: .82rem; }
footer p { margin: 0; }
@keyframes pulse { 50% { opacity: .45; transform: scale(.78); } }
@media (max-width: 760px) {
  .site-header { height: 70px; }
  nav a:not(.nav-login) { display: none; }
  .hero { min-height: 520px; padding-top: 85px; }
  .hero-meta { gap: 16px; flex-wrap: wrap; }
  .step-row { grid-template-columns: 1fr; }
  .step-arrow { display: none; }
  .feature-grid { grid-template-columns: 1fr; }
  .features, .news { padding: 25px 18px; }
  .news-list article { grid-template-columns: 1fr; gap: 7px; }
  footer { align-items: flex-start; }
  footer div { display: grid; gap: 4px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; scroll-behavior: auto !important; transition-duration: .01ms !important; } }