@font-face { font-family: "Space Grotesk"; src: url("fonts/SpaceGrotesk.ttf") format("truetype");
  font-weight: 300 700; font-display: swap; }
@font-face { font-family: "Inter"; src: url("fonts/Inter.ttf") format("truetype");
  font-weight: 100 900; font-display: swap; }
:root { --ink: #0d0d0c; --ink2: #161614; --ink3: #1f1f1c; --paper: #f2f2ee; --muted: #a8a8a0;
  --lime: #c6f432; --line: #2a2a26; --accent: var(--lime); }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--ink); color: var(--paper);
  font: 17px/1.65 "Inter", system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, .brand, .btn, .num { font-family: "Space Grotesk", "Inter", sans-serif; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
/* Navigation */
nav { position: sticky; top: 0; z-index: 10; background: rgba(13,13,12,0.82);
  backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
nav .wrap { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--paper); font-weight: 700;
  letter-spacing: 0.06em; font-size: 19px; }
.brand:hover { text-decoration: none; }
.brand .symbol { width: 30px; height: 30px; }
nav .links { margin-left: auto; display: flex; gap: 22px; font-size: 15px; }
nav .links a { color: var(--muted); }
nav .links a:hover { color: var(--paper); text-decoration: none; }
.symbol .dot { fill: var(--lime); } .symbol rect { fill: var(--paper); } .symbol .disc { fill: #8e8e86; }
/* Hero */
.hero { position: relative; overflow: hidden; padding: 96px 0 84px; }
.hero::before { content: ""; position: absolute; width: 760px; height: 760px; right: -220px; top: -260px;
  background: radial-gradient(circle, rgba(198,244,50,0.20), transparent 62%); pointer-events: none; }
.hero .wrap { display: grid; grid-template-columns: 1.25fr 0.75fr; gap: 48px; align-items: center; }
.eyebrow { color: var(--lime); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  font-size: 13px; margin: 0 0 18px; }
.hero h1 { font-size: clamp(38px, 5.4vw, 66px); line-height: 1.04; margin: 0 0 22px; letter-spacing: -0.02em; }
.hero h1 em { font-style: normal; color: var(--lime); }
.hero p.lead { font-size: 19px; color: #d6d6cf; max-width: 600px; margin: 0 0 32px; }
.cta { display: flex; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 22px; border-radius: 999px;
  font-weight: 600; font-size: 16px; transition: transform 0.15s, background 0.15s; }
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn.primary { background: var(--lime); color: #111; }
.btn.ghost { border: 1px solid #3a3a35; color: var(--paper); }
.btn.ghost:hover { background: var(--ink3); }
.hero-art { display: flex; justify-content: center; }
.hero-art .symbol { width: min(320px, 70vw); height: auto; filter: drop-shadow(0 30px 60px rgba(0,0,0,0.5)); }
.hero-art .dot { animation: float 4s ease-in-out infinite; transform-origin: center; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }
/* Stats */
.stats { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--ink2); }
.stats .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 28px 8px; text-align: center; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat .num { font-size: 40px; font-weight: 700; color: var(--paper); line-height: 1; }
.stat .lbl { color: var(--muted); font-size: 14px; margin-top: 8px; }
/* Sections */
section.block { padding: 84px 0 20px; }
.block h2 { font-size: clamp(28px, 3.4vw, 40px); margin: 0 0 10px; letter-spacing: -0.01em; }
.block .intro { color: var(--muted); max-width: 680px; margin: 0 0 36px; }
.grid-modules { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 18px; }
.mod-card { position: relative; display: block; padding: 22px 22px 20px; border-radius: 18px;
  background: var(--ink2); border: 1px solid var(--line); color: var(--paper); overflow: hidden;
  transition: transform 0.2s, border-color 0.2s; }
.mod-card::after { content: ""; position: absolute; left: 0; top: 0; height: 4px; width: 100%; background: var(--accent); }
.mod-card:hover { transform: translateY(-4px); border-color: var(--accent); text-decoration: none; }
.mod-card .num { font-size: 15px; color: var(--accent); font-weight: 600; letter-spacing: 0.08em; }
.mod-card h3 { font-size: 23px; margin: 6px 0 10px; }
.mod-card .meta { color: var(--muted); font-size: 14px; }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature { padding: 26px; border-radius: 18px; background: linear-gradient(160deg, var(--ink3), var(--ink2));
  border: 1px solid var(--line); }
.feature .k { font-family: "Space Grotesk"; color: var(--lime); font-size: 30px; font-weight: 700; }
.feature h3 { margin: 6px 0 8px; font-size: 20px; }
.feature p { margin: 0; color: #cfcfc8; font-size: 16px; }
/* Module rows and lesson cards */
.module-row { padding: 56px 0 10px; border-top: 1px solid var(--line); }
.module-row:first-of-type { border-top: 0; }
.module-row .head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 20px; }
.module-row .head .num { color: var(--accent); font-weight: 700; font-size: 15px; letter-spacing: 0.1em; }
.module-row h2 { margin: 0; font-size: 30px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(255px, 1fr)); gap: 20px; }
.card { display: block; border-radius: 16px; overflow: hidden; background: var(--ink2);
  border: 1px solid var(--line); color: var(--paper); transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s; }
.card:hover { transform: translateY(-5px); border-color: var(--accent); text-decoration: none;
  box-shadow: 0 18px 40px rgba(0,0,0,0.45); }
.card .thumb { position: relative; aspect-ratio: 16 / 9; background: #222; }
.card .thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card .dur { position: absolute; right: 10px; bottom: 10px; background: rgba(0,0,0,0.78);
  padding: 2px 8px; border-radius: 6px; font-size: 13px; font-weight: 600; }
.card .play { position: absolute; inset: 0; display: grid; place-items: center; opacity: 0; transition: opacity 0.2s; }
.card .play span { width: 56px; height: 56px; border-radius: 50%; background: var(--accent);
  display: grid; place-items: center; color: #111; font-size: 20px; padding-left: 4px; }
.card:hover .play { opacity: 1; }
.card .body { padding: 14px 16px 18px; }
.card .no { color: var(--accent); font-weight: 700; font-size: 13px; letter-spacing: 0.08em; }
.card h3 { margin: 4px 0 0; font-size: 18px; line-height: 1.3; }
.card.soon { opacity: 0.55; }
.card.soon .thumb { display: grid; place-items: center; color: var(--muted); font-size: 14px; }
/* Follow */
.follow { margin: 90px 0 0; padding: 56px; border-radius: 26px; text-align: center;
  background: radial-gradient(circle at 50% 0%, rgba(198,244,50,0.16), transparent 60%), var(--ink2);
  border: 1px solid var(--line); }
.follow h2 { margin: 0 0 10px; font-size: 34px; }
.follow p { color: var(--muted); margin: 0 0 26px; }
.follow .cta { justify-content: center; }
footer { margin-top: 80px; border-top: 1px solid var(--line); padding: 28px 0 48px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 18px; justify-content: space-between; }
/* Lesson page */
.lesson-hero { position: relative; padding: 56px 0 28px; overflow: hidden; }
.lesson-hero::before { content: ""; position: absolute; inset: 0; opacity: 0.16; pointer-events: none;
  background: radial-gradient(circle at 85% 0%, var(--accent), transparent 55%); }
.crumbs { font-size: 14px; color: var(--muted); margin-bottom: 18px; }
.crumbs a { color: var(--muted); }
.lesson-hero .tag { display: inline-block; color: #111; background: var(--accent); border-radius: 999px;
  padding: 4px 12px; font-weight: 700; font-size: 13px; letter-spacing: 0.06em; }
.lesson-hero h1 { font-size: clamp(30px, 4vw, 48px); line-height: 1.1; margin: 14px 0 12px; letter-spacing: -0.015em; }
.lesson-hero .summary { color: #d6d6cf; font-size: 18px; max-width: 820px; margin: 0; }
.lesson-grid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 36px; align-items: start; }
.player { position: relative; aspect-ratio: 16 / 9; border-radius: 18px; overflow: hidden;
  border: 1px solid var(--line); box-shadow: 0 30px 70px rgba(0,0,0,0.5); background: #000; }
.player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
aside.side { position: sticky; top: 88px; display: grid; gap: 18px; }
.panel { background: var(--ink2); border: 1px solid var(--line); border-radius: 16px; padding: 18px 18px 12px; }
.panel h3 { margin: 0 0 10px; font-size: 16px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.chapters { list-style: none; margin: 0; padding: 0; }
.chapters li a { display: flex; gap: 12px; padding: 7px 8px; border-radius: 8px; color: var(--paper); font-size: 15px; }
.chapters li a:hover { background: var(--ink3); text-decoration: none; }
.chapters .t { font-family: Consolas, monospace; color: var(--accent); min-width: 42px; }
.pn { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 22px 0 0; }
.pn a { display: block; padding: 14px 16px; border-radius: 14px; border: 1px solid var(--line);
  background: var(--ink2); color: var(--paper); font-size: 15px; }
.pn a:hover { border-color: var(--accent); text-decoration: none; }
.pn small { display: block; color: var(--muted); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; }
.pn .next { text-align: right; }
.transcript { margin-top: 44px; }
.transcript h2, .sources h2, .more h2 { font-size: 26px; margin: 0 0 14px; }
.transcript section { padding: 18px 0 6px; border-top: 1px solid var(--line); }
.transcript h3 { margin: 0 0 6px; font-size: 18px; display: flex; gap: 12px; align-items: baseline; }
.transcript h3 a { font-family: Consolas, monospace; font-size: 14px; color: var(--accent); }
.transcript p { margin: 0 0 12px; color: #dcdcd5; }
.sources { margin-top: 44px; }
.sources ol { padding-left: 22px; margin: 0; }
.sources li { margin: 8px 0; color: #d6d6cf; font-size: 15px; }
.credit { color: var(--muted); font-size: 14px; margin-top: 18px; }
.more { margin-top: 60px; }
/* Motion */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; } .reveal { opacity: 1; transform: none; transition: none; }
  .hero-art .dot { animation: none; } .card, .mod-card, .btn { transition: none; } }
@media (max-width: 900px) {
  .hero .wrap, .lesson-grid { grid-template-columns: 1fr; }
  .hero-art { order: -1; } .hero-art .symbol { width: 150px; }
  .stats .wrap { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; } .features { grid-template-columns: 1fr; }
  aside.side { position: static; } nav .links { display: none; } .follow { padding: 36px 20px; } }