:root {
    --bg: #070b18;
    --bg-soft: #0b1225;
    --text: #e8edff;
    --muted: #aeb8d8;
    --line: rgba(164, 188, 255, 0.2);
    --brand: #00b1ff;
    --brand-2: #09d98c;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: Inter, Segoe UI, system-ui, sans-serif;
    color: var(--text);
    background:
        linear-gradient(rgba(10, 16, 34, 0.95), rgba(10, 16, 34, 0.98)),
        radial-gradient(circle at 15% 10%, rgba(64, 123, 255, 0.2), transparent 35%),
        radial-gradient(circle at 85% 20%, rgba(123, 90, 255, 0.24), transparent 34%),
        var(--bg);
    min-height: 100vh;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(circle at center, black 50%, transparent 100%);
}

.container { width: min(1120px, 92vw); margin: 0 auto; }
.narrow { width: min(800px, 92vw); }
.section { padding: 4rem 0; position: relative; }

.site-header { position: sticky; top: 0; z-index: 100; backdrop-filter: blur(14px); background: rgba(7,11,24,.66); border-bottom: 1px solid var(--line); }
.nav-wrap { display: flex; gap: 1rem; align-items: center; justify-content: space-between; min-height: 4rem; }
.brand { color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: .03em; }
.top-nav { display: flex; gap: 1rem; flex-wrap: wrap; }
.top-nav a, .footer-links a { color: var(--muted); text-decoration: none; transition: color .2s ease; }
.top-nav a:hover, .footer-links a:hover { color: var(--text); }

.btn { display:inline-block; padding:.62rem 1rem; border-radius: 999px; font-weight: 600; text-decoration:none; border:1px solid transparent; transition: transform .2s ease, border-color .2s ease; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { color:#00070e; background: linear-gradient(90deg, var(--brand), var(--brand-2)); }
.btn-secondary { color:var(--text); border-color: var(--line); background: rgba(12,20,41,.55); }
.btn-tertiary { color: var(--muted); border-color: rgba(165,184,255,.14); }

.hero-grid { display:grid; grid-template-columns: 1.05fr .95fr; gap:2rem; align-items:start; }
.eyebrow { color: var(--brand); text-transform: uppercase; letter-spacing: .12em; font-size:.8rem; }
h1 { font-size: clamp(2.1rem, 7vw, 4rem); margin: .2rem 0 .6rem; }
h1:focus { outline: none; }
.hero-subtitle { font-size: clamp(1.2rem, 3.6vw, 1.9rem); margin:.2rem 0; }
.hero-copy { color:var(--muted); max-width: 48ch; }
.hero-cta { display:flex; flex-wrap: wrap; gap:.65rem; margin-top:1.3rem; }
.hero-cta-footer { text-align:center; margin-top:1.3rem; }

.hero-panel, .info-card, .feature-group, .timeline-card, .demo-panel, .arch-card, .code-block {
    background: linear-gradient(140deg, rgba(18,29,61,.8), rgba(14,21,43,.58));
    border: 1px solid var(--line);
    border-radius: 8px;
}
.hero-panel { padding: 1rem; }
.hero-panel-title { margin-bottom: 1rem; font-weight: bold;}
.hero-panel-subtitle { background: linear-gradient(90deg, #9ebd13 0%, #008552 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
pre { margin:0; overflow:auto; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size:.9rem; color:#cae7ff; font-size:small; }

.status-grid { display:grid; grid-template-columns: repeat(3,1fr); gap:.6rem; margin-top:.8rem; }
.status-card { padding:.7rem; background: rgba(7,11,24,.65); border-radius:12px; }
.status-card h3 { margin:0; font-size:.75rem; color:var(--muted); }
.status-card p { margin:.3rem 0; font-weight:600; }
.status-card span { color:var(--brand); font-size:.8rem; }
.query-result { margin-top:.8rem; background: rgba(7,11,24,.65); border-radius: 12px; padding:.7rem; }
.query-result h3 { margin:.1rem 0; font-size:1rem; }
.query-result p, .section-intro { color: var(--muted); }

h2 { font-size: clamp(1.6rem, 3.2vw, 2.3rem); margin-top: 0; }
.card-grid { display:grid; grid-template-columns: repeat(auto-fit, minmax(300px,1fr)); gap:.8rem; }
.info-card { padding:1rem; }
.card-grid .info-card h3 { margin:0; font-size:1rem; }

.architecture-grid { display:grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); gap:.7rem; }
.arch-card { color:var(--text); border-color:var(--line); padding:.5rem; text-align:left; cursor:pointer; }
.arch-card.active { border-color: var(--brand); background-color:var(--brand); border-width:3px; font-weight:bold; }
.selected-architecture { color: var(--muted); margin-top: .8rem; }
.architecture-schema-1 { text-align: center;}
    .architecture-schema-1 img { display: block; margin: auto; transform: scale(0.85); max-width:100%; }
.architecture-detail {
    margin-top: .9rem;
    padding: 1.25rem;
    background: linear-gradient(140deg, rgba(21,34,72,.85), rgba(12,20,41,.7));
    border: 1px solid rgba(130, 171, 255, 0.28);
    border-radius: 18px;
    box-shadow: 0 14px 38px rgba(1, 6, 20, 0.34);
    transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.architecture-detail:hover {
    border-color: rgba(102, 202, 255, 0.5);
    transform: translateY(-1px);
    box-shadow: 0 16px 42px rgba(1, 6, 20, 0.4);
}
.architecture-detail-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
    margin-bottom: 1rem;
}
.architecture-detail-header h3 { margin: 0; font-size: 1.25rem; }
.architecture-detail-badge {
    font-size: .74rem;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: #00131e;
    background: linear-gradient(90deg, var(--brand), var(--brand-2));
    border-radius: 999px;
    padding: .32rem .68rem;
    white-space: nowrap;
}
.architecture-detail-summary { margin: .5rem 0 0; color: var(--muted); }
.architecture-detail-body { color: var(--text); }
.architecture-detail-body p { color: var(--muted); line-height: 1.6; }
.architecture-detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: .7rem;
    margin-top: .7rem;
}
.architecture-detail-card {
    background: rgba(8, 14, 30, 0.65);
    border: 1px solid rgba(160, 190, 255, 0.2);
    border-radius: 14px;
    padding: .75rem;
}
.architecture-detail-card h4 { margin: 0 0 .4rem; font-size: .95rem; }
.architecture-detail-card p { margin: 0; font-size: .9rem; }
.architecture-detail-code {
    margin-top: .8rem;
    padding: .9rem;
    border-radius: 14px;
    border: 1px solid rgba(130, 171, 255, 0.24);
    background: rgba(7, 11, 24, 0.7);
}

.tab-row { display:flex; flex-wrap: wrap; gap:.6rem; margin-bottom: .8rem; }
.tab-btn { border:1px solid var(--line); color:var(--muted); background:rgba(7,11,24,.7); border-radius:999px; padding:.45rem .8rem; cursor:pointer; }
.tab-btn.active { color:var(--text); border-color: var(--brand); }
.code-block { padding:1rem; }

.feature-groups { display:grid; grid-template-columns: repeat(auto-fit,minmax(200px,1fr)); gap:.9rem; }
.feature-groups ul { padding-left:1.2rem; }
.feature-group { padding:1rem; }
.feature-group ul { margin:.6rem 0 0; padding-left:1rem; color:var(--muted); }
.timeline-grid { display:grid; grid-template-columns: repeat(auto-fit,minmax(180px,1fr)); gap:.75rem; margin-bottom: 1rem; }
.timeline-card { padding:.8rem; }
.demo-panel { padding:1.2rem; }
.demo-panel ul { color: var(--muted); }
.final-cta { text-align:center; }

.site-footer { border-top:1px solid var(--line); padding: 2.6rem 0; background: rgba(4,8,18,.7); }
.footer-grid { display:grid; grid-template-columns: 1fr auto; gap:1rem; align-items:start; }
.footer-grid p { color: var(--muted); max-width:52ch; }
.footer-links { display:grid; gap:.5rem; }

@media (max-width: 940px) {
    .hero-grid { grid-template-columns: 1fr; }
    .top-nav { display:none; }
    .footer-grid { grid-template-columns: 1fr; }
    .architecture-detail-header { flex-direction: column; }
    code { font-size:x-small; }
}