:root {
  --ink: #e8e9ec;
  --muted: #a2a8b3;
  --dim: #6f7681;
  --bg: #080a0d;
  --panel: #0d1116;
  --panel-2: #11161d;
  --line: rgba(255,255,255,.10);
  --line-strong: rgba(255,255,255,.18);
  --signal: #d74848;
  --signal-soft: rgba(215,72,72,.14);
  --paper: #f1ede4;
  --max: 1180px;
  --radius: 22px;
  --shadow: 0 24px 80px rgba(0,0,0,.35);
  --serif: Georgia, 'Times New Roman', Times, serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 82% 12%, rgba(215,72,72,.075), transparent 26rem),
    radial-gradient(circle at 15% 45%, rgba(105,122,145,.07), transparent 33rem),
    var(--bg);
  font-family: var(--sans);
  line-height: 1.6;
  min-height: 100vh;
}
a { color: inherit; }
img { max-width: 100%; display: block; }
button, input, textarea { font: inherit; }
::selection { background: rgba(215,72,72,.35); color: white; }

.skip-link { position:absolute; left:-9999px; top:0; z-index:999; padding:.8rem 1rem; background:#fff; color:#000; }
.skip-link:focus { left:1rem; top:1rem; }

.site-header {
  position: sticky; top: 0; z-index: 30;
  border-bottom: 1px solid var(--line);
  background: rgba(8,10,13,.82);
  backdrop-filter: blur(18px);
}
.nav { max-width: var(--max); margin:auto; min-height:72px; display:flex; align-items:center; justify-content:space-between; padding:0 24px; gap:24px; }
.brand { display:flex; align-items:center; gap:12px; text-decoration:none; letter-spacing:.08em; font-size:.83rem; font-weight:750; text-transform:uppercase; }
.brand-mark { width:28px; height:28px; display:grid; place-items:center; border:1px solid var(--line-strong); border-radius:50%; position:relative; }
.brand-mark::before { content:''; width:6px; height:6px; border-radius:50%; background:var(--signal); box-shadow:0 0 18px rgba(215,72,72,.9); }
.nav-links { display:flex; align-items:center; gap:26px; }
.nav-links a { text-decoration:none; color:var(--muted); font-size:.92rem; }
.nav-links a:hover, .nav-links a[aria-current='page'] { color:#fff; }
.menu-button { display:none; background:transparent; color:var(--ink); border:1px solid var(--line); border-radius:10px; padding:8px 10px; }

main { overflow:hidden; }
.container { width:min(calc(100% - 48px), var(--max)); margin-inline:auto; }
.eyebrow { color:var(--signal); text-transform:uppercase; letter-spacing:.19em; font-weight:780; font-size:.72rem; }
.display { font-family:var(--serif); font-weight:400; letter-spacing:-.04em; line-height:.96; margin:0; }
.lead { color:#c2c6cd; font-size:clamp(1.06rem, 1.4vw, 1.22rem); max-width:700px; }
.muted { color:var(--muted); }

.hero { min-height: calc(100vh - 72px); display:grid; align-items:center; position:relative; border-bottom:1px solid var(--line); }
.hero::after { content:''; position:absolute; inset:auto 0 0; height:1px; background:linear-gradient(90deg,transparent,var(--signal),transparent); opacity:.32; }
.hero-grid { display:grid; grid-template-columns:1.1fr .9fr; gap:56px; align-items:center; padding:84px 0 92px; }
.hero h1 { font-size:clamp(4rem, 9.5vw, 8.7rem); max-width:820px; }
.hero-copy { margin-top:28px; }
.hero-actions { display:flex; gap:12px; flex-wrap:wrap; margin-top:34px; }
.button { display:inline-flex; align-items:center; justify-content:center; min-height:48px; padding:0 20px; border-radius:999px; border:1px solid var(--line-strong); text-decoration:none; font-weight:700; font-size:.91rem; transition:.2s ease; }
.button.primary { background:var(--paper); color:#0b0c0f; border-color:var(--paper); }
.button:hover { transform:translateY(-2px); border-color:rgba(255,255,255,.35); }
.button.primary:hover { background:white; }

.signal-card { position:relative; border:1px solid var(--line); background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.016)); border-radius:32px; box-shadow:var(--shadow); min-height:520px; padding:42px; overflow:hidden; }
.signal-card::before { content:''; position:absolute; inset:0; background:repeating-linear-gradient(0deg,transparent 0 6px,rgba(255,255,255,.012) 7px); pointer-events:none; }
.rec { display:flex; align-items:center; gap:9px; color:#c3c6cb; font-size:.74rem; letter-spacing:.15em; text-transform:uppercase; }
.rec-dot { width:8px; height:8px; border-radius:50%; background:var(--signal); box-shadow:0 0 18px rgba(215,72,72,.9); animation:pulse 2.3s infinite; }
@keyframes pulse { 50% { opacity:.35; box-shadow:0 0 4px rgba(215,72,72,.4); } }
.waveform { display:flex; align-items:center; gap:4px; height:160px; margin:70px 0 54px; opacity:.9; }
.waveform i { display:block; flex:1; max-width:5px; min-width:2px; height:var(--h); background:linear-gradient(to bottom,transparent,#9ba0a8 18%,#d7d9dc 50%,#9ba0a8 82%,transparent); border-radius:999px; opacity:var(--o,.8); }
.transcript { border-top:1px solid var(--line); padding-top:28px; }
.transcript .timecode { font-family:ui-monospace, SFMono-Regular, Menlo, monospace; color:var(--dim); font-size:.74rem; }
.transcript p { font-family:var(--serif); font-size:clamp(1.45rem,2.3vw,2.1rem); margin:.6rem 0 0; }

.section { padding:112px 0; border-bottom:1px solid var(--line); }
.section-head { display:flex; justify-content:space-between; align-items:end; gap:28px; margin-bottom:42px; }
.section-head h2 { font-size:clamp(2.8rem,6vw,5.3rem); }
.section-head p { max-width:520px; margin:0 0 .6rem; }

.book-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.book-card { min-height:480px; border:1px solid var(--line); border-radius:var(--radius); padding:28px; position:relative; overflow:hidden; display:flex; flex-direction:column; background:linear-gradient(150deg,rgba(255,255,255,.045),rgba(255,255,255,.012)); text-decoration:none; transition:.25s ease; }
.book-card:hover { transform:translateY(-5px); border-color:var(--line-strong); }
.book-number { font-family:ui-monospace, SFMono-Regular, Menlo, monospace; color:var(--dim); font-size:.76rem; letter-spacing:.13em; }
.book-card h3 { font-family:var(--serif); font-size:clamp(2.2rem,3.4vw,3.55rem); font-weight:400; line-height:.96; letter-spacing:-.035em; margin:auto 0 16px; max-width:8ch; }
.book-card p { color:var(--muted); margin:0; }
.book-progress { display:block; margin-top:24px; position:relative; z-index:2; }
.book-progress-head { display:flex; align-items:baseline; justify-content:space-between; gap:16px; margin-bottom:9px; color:#c7cbd2; font-size:.74rem; text-transform:uppercase; letter-spacing:.09em; }
.book-progress-head strong { color:#fff; font-family:ui-monospace, SFMono-Regular, Menlo, monospace; font-size:.76rem; }
.book-progress-track { display:block; height:5px; overflow:hidden; border-radius:999px; background:rgba(255,255,255,.09); }
.book-progress-fill { display:block; width:0; height:100%; border-radius:inherit; background:linear-gradient(90deg,#a52f35,var(--signal)); box-shadow:0 0 16px rgba(215,72,72,.35); transition:width .7s ease; }
.book-progress-detail { display:block; margin-top:9px; color:var(--dim); font-size:.72rem; }
.book-progress.unavailable .book-progress-detail { color:var(--muted); }
.book-card .status { position:absolute; top:24px; right:24px; border:1px solid var(--line); border-radius:999px; padding:6px 10px; font-size:.7rem; text-transform:uppercase; letter-spacing:.1em; color:#b9bec6; }
.book-card::after { content:''; position:absolute; width:260px; height:260px; right:-100px; bottom:-120px; border:1px solid var(--line); border-radius:50%; box-shadow:0 0 0 36px rgba(255,255,255,.018),0 0 0 72px rgba(255,255,255,.012); }
.book-card.featured { background:linear-gradient(150deg,rgba(215,72,72,.11),rgba(255,255,255,.012) 55%); }

.split { display:grid; grid-template-columns:.85fr 1.15fr; gap:80px; align-items:start; }
.prose h2 { font-family:var(--serif); font-size:clamp(2.8rem,5vw,4.6rem); font-weight:400; line-height:1; letter-spacing:-.035em; margin:0 0 26px; }
.prose p { color:#b8bdc6; font-size:1.04rem; }
.prose strong { color:#fff; }
.quote { border-left:1px solid var(--signal); padding-left:26px; margin:32px 0; font-family:var(--serif); font-size:1.55rem; line-height:1.32; color:#e3e0da; }

.rules { display:grid; grid-template-columns:repeat(2,1fr); gap:12px; }
.rule { border:1px solid var(--line); border-radius:16px; padding:20px; background:rgba(255,255,255,.018); }
.rule b { display:block; margin-bottom:6px; font-size:.92rem; }
.rule span { color:var(--muted); font-size:.91rem; }

.page-hero { padding:112px 0 72px; border-bottom:1px solid var(--line); }
.page-hero h1 { font-size:clamp(4rem,9vw,8rem); max-width:1000px; }
.page-hero .lead { margin-top:26px; }
.crumb { color:var(--dim); text-transform:uppercase; letter-spacing:.15em; font-size:.7rem; margin-bottom:18px; }

.book-detail { display:grid; grid-template-columns:minmax(240px,340px) 1fr; gap:70px; align-items:start; }
.book-jacket { aspect-ratio:2/3; border:1px solid var(--line); border-radius:12px; padding:28px; position:sticky; top:110px; display:flex; flex-direction:column; background:linear-gradient(150deg,#15191f,#0b0d10 62%,#160d0f); box-shadow:var(--shadow); overflow:hidden; }
.book-jacket::before { content:''; position:absolute; inset:0; background:radial-gradient(circle at 80% 20%,rgba(215,72,72,.16),transparent 35%),repeating-linear-gradient(0deg,transparent 0 5px,rgba(255,255,255,.012) 6px); }
.jacket-series,.jacket-title,.jacket-author,.jacket-mark { position:relative; z-index:1; }
.jacket-series { text-transform:uppercase; letter-spacing:.16em; font-size:.6rem; color:#9ea4ad; }
.jacket-title { font-family:var(--serif); font-size:clamp(2.3rem,4vw,3.7rem); line-height:.92; margin:auto 0; font-weight:400; }
.jacket-mark { height:80px; margin:18px 0; display:flex; gap:3px; align-items:center; }
.jacket-mark i { display:block; width:3px; height:var(--h); background:#b8bbc1; opacity:.66; }
.jacket-author { text-transform:uppercase; letter-spacing:.13em; font-size:.72rem; }
.meta-row { display:flex; gap:10px; flex-wrap:wrap; margin:22px 0 38px; }
.pill { border:1px solid var(--line); border-radius:999px; padding:7px 11px; color:#aeb3bc; font-size:.74rem; text-transform:uppercase; letter-spacing:.08em; }

.feature-list { list-style:none; padding:0; margin:28px 0 0; border-top:1px solid var(--line); }
.feature-list li { padding:15px 0; border-bottom:1px solid var(--line); display:grid; grid-template-columns:150px 1fr; gap:20px; }
.feature-list b { font-size:.82rem; color:#fff; }
.feature-list span { color:var(--muted); }

.cta { border:1px solid var(--line); border-radius:28px; padding:46px; background:linear-gradient(135deg,rgba(215,72,72,.085),rgba(255,255,255,.02)); display:grid; grid-template-columns:1fr auto; gap:30px; align-items:center; }
.cta h2 { font-family:var(--serif); font-weight:400; font-size:clamp(2.2rem,4vw,3.7rem); line-height:1; margin:0 0 12px; }
.cta p { margin:0; color:var(--muted); }

.contact-panel { max-width:780px; border:1px solid var(--line); border-radius:24px; padding:36px; background:var(--panel); }
.contact-panel h2 { font-family:var(--serif); font-weight:400; font-size:2.4rem; margin:0 0 12px; }
.notice { border:1px solid var(--line); background:rgba(255,255,255,.025); border-radius:14px; padding:16px 18px; color:var(--muted); }

.site-footer { padding:60px 0 32px; }
.footer-grid { display:grid; grid-template-columns:1fr auto; gap:40px; align-items:start; padding-bottom:44px; border-bottom:1px solid var(--line); }
.footer-title { font-family:var(--serif); font-size:2rem; }
.footer-links { display:grid; grid-template-columns:repeat(2,auto); gap:10px 28px; }
.footer-links a { color:var(--muted); text-decoration:none; font-size:.9rem; }
.footer-links a:hover { color:#fff; }
.footer-bottom { display:flex; justify-content:space-between; gap:20px; color:var(--dim); font-size:.78rem; padding-top:22px; }

.reveal { opacity:0; transform:translateY(18px); transition:opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity:1; transform:none; }

@media (max-width: 900px) {
  .hero-grid,.split,.book-detail { grid-template-columns:1fr; }
  .hero { min-height:auto; }
  .signal-card { min-height:400px; }
  .book-grid { grid-template-columns:1fr; }
  .book-card { min-height:350px; }
  .rules { grid-template-columns:1fr; }
  .book-jacket { position:relative; top:auto; max-width:360px; }
  .cta { grid-template-columns:1fr; }
}
@media (max-width: 680px) {
  .container { width:min(calc(100% - 32px),var(--max)); }
  .menu-button { display:block; }
  .nav-links { display:none; position:absolute; left:16px; right:16px; top:62px; background:#0d1116; border:1px solid var(--line); border-radius:16px; padding:18px; flex-direction:column; align-items:stretch; box-shadow:var(--shadow); }
  .nav-links.open { display:flex; }
  .nav { padding:0 16px; min-height:64px; }
  .hero-grid { padding:70px 0; }
  .hero h1,.page-hero h1 { font-size:clamp(3.3rem,17vw,5.4rem); }
  .section { padding:78px 0; }
  .section-head { display:block; }
  .section-head p { margin-top:18px; }
  .signal-card { padding:28px; }
  .waveform { margin:50px 0 34px; }
  .book-detail { gap:42px; }
  .feature-list li { grid-template-columns:1fr; gap:4px; }
  .cta { padding:30px; }
  .footer-grid,.footer-bottom { grid-template-columns:1fr; display:grid; }
  .footer-links { grid-template-columns:1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { scroll-behavior:auto!important; animation:none!important; transition:none!important; }
  .reveal { opacity:1; transform:none; }
}