:root {
  --bg: #0b0d12;
  --surface: #11151d;
  --text: #e8eefc;
  --muted: #a2acc7;
  --primary: #0b5cff;
  --primary-600: #094dd3;
  --ok: #18b26a;
  --danger: #ff4d4f;
  --radius: 12px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 600px at 20% -10%, #0b5cff22, transparent 60%), var(--bg);
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

.site-header { position: sticky; top: 0; z-index: 40; backdrop-filter: saturate(1.2) blur(8px); background: #0b0d12cc; border-bottom: 1px solid #1b2230; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: .3px; }
.brand img { display: block; }
.nav { display: flex; align-items: center; gap: 14px; }
.nav a { color: var(--text); text-decoration: none; padding: 8px 10px; border-radius: 8px; }
.nav a:hover { background: #1b2230; }

.btn { display: inline-block; padding: 10px 16px; border-radius: 10px; border: 1px solid #2a3750; color: var(--text); text-decoration: none; transition: .15s ease; }
.btn--primary { background: linear-gradient(180deg, var(--primary), var(--primary-600)); border-color: #0b46c0; box-shadow: 0 6px 20px #0b5cff44 inset, 0 6px 20px #0b5cff33; }
.btn--primary:hover { transform: translateY(-1px); filter: brightness(1.05); }
.btn--ghost { background: transparent; }

.hero { padding: 54px 0 36px; background: radial-gradient(800px 300px at 80% 10%, #0b5cff14, transparent 60%); border-bottom: 1px solid #1b2230; }
.hero-inner { display: grid; grid-template-columns: 1.2fr .8fr; align-items: center; gap: 28px; }
.hero h1 { font-size: clamp(28px, 5vw, 44px); margin: 0 0 10px; }
.lead { color: var(--muted); font-size: 16px; margin: 0 0 18px; }
.meta { list-style: none; padding: 0; margin: 0 0 16px; color: var(--muted); display: grid; gap: 6px; }
.cta { display: flex; gap: 10px; }
.hero-media .media-box { border: 1px dashed #2a3750; border-radius: var(--radius); padding: 28px; color: #8aa4ff; text-align: center; font-weight: 600; background: #0d1220; }

.section { padding: 52px 0; }
.section--alt { background: #0d1118; border-top: 1px solid #1b2230; border-bottom: 1px solid #1b2230; }
.section-title { margin: 0 0 22px; font-size: 22px; }

.grid { display: grid; gap: 14px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0,1fr)); }

.card { background: var(--surface); border: 1px solid #1f2a3f; border-radius: var(--radius); padding: 16px; }
.note { color: var(--muted); margin-top: 10px; }

.speaker { background: var(--surface); border: 1px solid #1f2a3f; border-radius: var(--radius); padding: 16px; }
.speaker .avatar { width: 56px; height: 56px; border-radius: 50%; background: linear-gradient(180deg, #0b5cff55, #0b5cff22); color: #d7e1ff; display:flex; align-items:center; justify-content:center; font-weight: 700; margin-bottom: 10px; border: 1px solid #2a3750; }

.form { display: grid; gap: 12px; }
.field { display: grid; gap: 6px; }
.field span { color: var(--muted); font-size: 13px; }
input, textarea { width: 100%; background: #0f141f; border: 1px solid #24314a; color: var(--text); border-radius: 10px; padding: 10px 12px; font: inherit; outline: none; }
input:focus, textarea:focus { border-color: #4060a3; box-shadow: 0 0 0 3px #0b5cff33; }
.form-actions { display: flex; align-items: center; gap: 12px; }
.form-status { min-height: 1.2em; color: var(--muted); }
.privacy { color: var(--muted); font-size: 12px; margin: 4px 0 0; }

.site-footer { border-top: 1px solid #1b2230; padding: 20px 0; background: #0b0d12; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; color: var(--muted); }
.footer-nav a { color: var(--muted); text-decoration: none; }
.footer-nav a:hover { color: var(--text); }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .grid--2 { grid-template-columns: 1fr; }
  .grid--3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .nav { gap: 6px; }
  .nav a { padding: 8px; }
}
@media (max-width: 600px) {
  .grid--3 { grid-template-columns: 1fr; }
}