:root {
  --bg: #0b0f14;
  --panel: #111821;
  --panel-soft: #151e28;
  --line: #26313e;
  --text: #eef3f8;
  --muted: #93a1b1;
  --accent: #9ce6c5;
  --accent-dark: #102b24;
  --warm: #f0b989;
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { background: var(--bg); scroll-behavior: smooth; }
body { margin: 0; min-height: 100vh; color: var(--text); background: radial-gradient(circle at 80% 5%, #17251f 0, transparent 26rem), var(--bg); }
a { color: inherit; text-decoration: none; }
p { color: var(--muted); line-height: 1.7; }
.site-header, main, footer { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.site-header { min-height: 76px; display: flex; align-items: center; gap: 36px; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 720; letter-spacing: -.02em; }
.brand-mark { display: inline-grid; place-items: center; width: 34px; height: 34px; border: 1px solid #537265; border-radius: 10px; color: var(--accent); background: linear-gradient(145deg, #173229, #11171d); font-weight: 800; }
nav { display: flex; gap: 28px; margin-right: auto; }
nav a { color: var(--muted); font-size: .91rem; }
nav a:hover, nav a.active { color: var(--text); }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 22px; border: 1px solid var(--accent); border-radius: 11px; color: #07110d; background: var(--accent); font: inherit; font-weight: 700; cursor: pointer; }
.button:hover { background: #b3f2d7; }
.button-small { min-height: 36px; padding-inline: 16px; font-size: .88rem; }
.text-link { color: var(--text); font-weight: 650; }
.text-link span { color: var(--accent); margin-left: 5px; }
.eyebrow, .card-tag { margin: 0 0 14px; color: var(--accent); font-size: .73rem; font-weight: 760; letter-spacing: .14em; text-transform: uppercase; }
.hero { min-height: 650px; display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 80px; }
.hero h1, .page-intro h1, .error-card h1 { margin: 0; font-size: clamp(3rem, 6vw, 5.7rem); line-height: .98; letter-spacing: -.065em; }
.hero h1 span { color: var(--accent); }
.lead { max-width: 650px; margin: 26px 0 0; font-size: 1.14rem; }
.actions { display: flex; align-items: center; gap: 28px; margin-top: 34px; }
.player-card { padding: 14px; border: 1px solid var(--line); border-radius: 22px; background: #101720cc; box-shadow: 0 30px 80px #0008; transform: rotate(1.3deg); }
.player-visual { position: relative; display: grid; place-items: center; aspect-ratio: 16/11; overflow: hidden; border-radius: 14px; background: linear-gradient(140deg, #192f2a, #18232f 58%, #33251f); }
.orb { position: absolute; border-radius: 50%; filter: blur(2px); }
.orb-one { width: 230px; height: 230px; left: -30px; top: -20px; background: #6acaa42b; box-shadow: 60px 40px 120px #68e5b14d; }
.orb-two { width: 180px; height: 180px; right: -20px; bottom: -50px; background: #e9a56d30; box-shadow: -50px -30px 100px #d6a06b36; }
.play { z-index: 1; display: grid; place-items: center; width: 64px; height: 64px; padding-left: 4px; border: 1px solid #ffffff80; border-radius: 50%; color: white; background: #0a1118aa; }
.player-meta { display: flex; justify-content: space-between; align-items: center; padding: 18px 6px 12px; }
.player-meta div { display: grid; gap: 3px; }.player-meta span { color: var(--muted); font-size: .8rem; }
.live-pill { padding: 5px 8px; border: 1px solid #4a655a; border-radius: 99px; color: var(--accent) !important; }
.progress { height: 3px; margin: 0 6px 6px; background: #26313d; }.progress span { display: block; width: 62%; height: 100%; background: var(--accent); }
.section { padding: 90px 0 120px; border-top: 1px solid var(--line); }
.section-heading { display: flex; justify-content: space-between; align-items: end; margin-bottom: 34px; }
h2 { margin: 0; font-size: clamp(1.7rem, 3vw, 2.6rem); letter-spacing: -.035em; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card { min-height: 300px; padding: 28px; border: 1px solid var(--line); border-radius: 16px; background: linear-gradient(160deg, var(--panel-soft), var(--panel)); }
.feature-card h3 { margin: 12px 0 10px; font-size: 1.35rem; }.feature-card p { font-size: .93rem; }
.card-icon { display: grid; place-items: center; width: 42px; height: 42px; margin-bottom: 34px; border-radius: 11px; color: var(--accent); background: var(--accent-dark); }
.status { display: inline-flex; align-items: center; gap: 8px; margin-top: 22px; color: #b9c8c0; font-size: .8rem; }.status i { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); }.status.muted i { background: var(--warm); box-shadow: none; }
.quiet-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; margin-bottom: 110px; padding: 48px; border: 1px solid #345047; border-radius: 18px; background: #10221c; }.quiet-panel p:last-child { margin: 0; }
footer { display: flex; justify-content: space-between; padding: 30px 0 42px; border-top: 1px solid var(--line); color: var(--muted); font-size: .8rem; }
.page-main { min-height: 720px; }.page-main.narrow { max-width: 980px; }
.page-intro { padding: 110px 0 70px; }.page-intro .lead { max-width: 760px; }
.experiment-list { border-top: 1px solid var(--line); }.experiment-list article { display: grid; grid-template-columns: 70px 1fr auto; gap: 30px; align-items: start; padding: 36px 0; border-bottom: 1px solid var(--line); }.experiment-list h2 { font-size: 1.5rem; }.experiment-list p { max-width: 650px; margin-bottom: 0; }.number { color: #526171; font-family: ui-monospace, monospace; }
.prose-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 80px; }.prose-grid div { padding: 30px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }.prose-grid h2 { font-size: 1.25rem; }
.login-body { display: flex; flex-direction: column; }.login-main { flex: 1; display: grid; place-items: center; padding: 70px 0; }.login-card { width: min(460px, 100%); padding: 42px; border: 1px solid var(--line); border-radius: 18px; background: #101720e8; box-shadow: 0 30px 80px #0007; }.login-card h1 { margin: 0; font-size: 2.5rem; letter-spacing: -.05em; }.login-card form { display: grid; gap: 18px; margin-top: 30px; }.login-card label { display: grid; gap: 8px; color: #c8d0d8; font-size: .86rem; }.login-card input { width: 100%; min-height: 48px; padding: 0 14px; border: 1px solid #344252; border-radius: 10px; color: var(--text); background: #0a1017; font: inherit; }.login-card input:focus { outline: 2px solid #70b99d; outline-offset: 1px; }.form-message { min-height: 1.5em; margin: 0; color: var(--accent); text-align: center; font-size: .86rem; }.fine-print { margin: 18px 0 0; font-size: .76rem; text-align: center; }
.error-body { display: grid; place-items: center; }.error-card { width: min(700px, calc(100% - 40px)); text-align: center; }.error-card .brand-mark { margin-bottom: 36px; }.error-card h1 { font-size: clamp(2.7rem, 7vw, 5rem); }.error-card p:not(.eyebrow) { margin: 24px auto 32px; }

@media (max-width: 820px) {
  .site-header { gap: 18px; }.site-header nav { display: none; }
  .site-header .button { margin-left: auto; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 55px; padding: 90px 0; }
  .player-card { max-width: 580px; transform: none; }
  .card-grid, .prose-grid { grid-template-columns: 1fr; }
  .quiet-panel { grid-template-columns: 1fr; gap: 22px; padding: 32px; }
  .experiment-list article { grid-template-columns: 42px 1fr; }.experiment-list .status { grid-column: 2; margin-top: 0; }
}

@media (max-width: 520px) {
  .site-header, main, footer { width: min(100% - 28px, 1180px); }
  .hero h1 { font-size: 3.2rem; }.actions { align-items: flex-start; flex-direction: column; }
  .section-heading { align-items: flex-start; flex-direction: column; gap: 16px; }
  footer { flex-direction: column; gap: 8px; }.login-card { padding: 30px 22px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }