:root {
  --bg: #0a0f1a;
  --panel: #121a2b;
  --text: #e8eefc;
  --muted: #9aa8c7;
  --accent: #38bdf8;
  --accent-2: #34d399;
  --danger: #fb7185;
  --line: #243049;
  --radius: 14px;
  --font: "Segoe UI", "PingFang SC", "Noto Sans SC", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background:
    radial-gradient(1200px 500px at 10% -10%, #1d4ed833, transparent),
    radial-gradient(900px 400px at 90% 0%, #0ea5e933, transparent),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: min(1100px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(10px);
  background: #0a0f1acc;
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; gap: 20px;
  min-height: 64px;
}
.brand {
  font-weight: 800; letter-spacing: 0.04em; color: #fff; font-size: 1.25rem;
}
nav { display: flex; gap: 14px; flex: 1; }
nav a[aria-current="page"] { color: #fff; font-weight: 600; }
.session-pill {
  font-size: 0.85rem; color: var(--accent-2);
  background: #064e3b55; border: 1px solid #065f46; padding: 6px 10px; border-radius: 999px;
}
.hero { padding: 56px 0 28px; }
.eyebrow { color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.8rem; }
.hero h1, .page-head h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); line-height: 1.15; margin: 8px 0 12px; }
.lede { color: var(--muted); font-size: 1.1rem; max-width: 50ch; }
.cta-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line); background: var(--panel); color: var(--text);
  padding: 10px 16px; border-radius: 10px; cursor: pointer; font: inherit;
}
.btn.primary { background: linear-gradient(135deg, #0284c7, #0ea5e9); border-color: transparent; color: #041018; font-weight: 700; }
.btn.danger { background: #4c0519; border-color: #9f1239; color: #fecdd3; }
.btn:hover { filter: brightness(1.08); text-decoration: none; }
section { margin: 36px 0; }
h2 { font-size: 1.35rem; margin-bottom: 14px; }
.feature-list { color: var(--muted); padding-left: 1.2rem; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.card, .panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}
.card h2, .card h3 { margin-top: 0; font-size: 1.1rem; }
.card p { color: var(--muted); font-size: 0.95rem; }
.hosts { display: flex; flex-direction: column; gap: 4px; font-size: 0.8rem; color: #7dd3fc; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  display: inline-block; padding: 4px 10px; border-radius: 999px;
  background: #1e293b; color: #cbd5e1; font-size: 0.8rem; border: 1px solid #334155;
}
.host-list { color: var(--muted); }
.start-form { display: flex; flex-wrap: wrap; gap: 10px; align-items: end; margin-top: 12px; }
.start-form label { display: flex; flex-direction: column; gap: 6px; color: var(--muted); font-size: 0.9rem; }
.start-form input {
  background: #0b1220; border: 1px solid var(--line); color: var(--text);
  padding: 10px 12px; border-radius: 8px; min-width: 220px;
}
.msg { margin-top: 10px; color: var(--danger); }
.ok { color: var(--accent-2); }
.site-footer {
  margin-top: 64px; border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 0.9rem;
}
.page-head { padding: 36px 0 12px; }
@media (max-width: 640px) {
  .header-inner { flex-wrap: wrap; padding: 10px 0; }
  nav { width: 100%; }
}