:root {
  --ink: #07130f;
  --panel: #10211a;
  --panel-2: #172d24;
  --lime: #c9ff36;
  --lime-dark: #87b400;
  --cream: #f4f1e8;
  --muted: #a9b8af;
  --line: rgba(255,255,255,.12);
  --danger: #ff6b5f;
  --warning: #ffc857;
  --success: #72e59b;
  --radius: 20px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--cream); background: var(--ink); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.55; }
a { color: inherit; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
.container { width: min(1120px, calc(100% - 32px)); margin: auto; }
.topbar { position: sticky; z-index: 20; top: 0; border-bottom: 1px solid var(--line); background: rgba(7,19,15,.88); backdrop-filter: blur(16px); }
.nav { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 900; letter-spacing: -.03em; }
.brand-mark { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; color: var(--ink); background: var(--lime); font-size: 19px; }
.nav-links { display: flex; align-items: center; gap: 22px; color: var(--muted); }
.nav-links a { text-decoration: none; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 0 18px; border: 1px solid transparent; border-radius: 999px; background: var(--lime); color: var(--ink); font-weight: 850; text-decoration: none; transition: .2s ease; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(201,255,54,.16); }
.btn.secondary { border-color: var(--line); background: transparent; color: var(--cream); }
.btn.danger { background: var(--danger); color: white; }
.btn.small { min-height: 38px; padding-inline: 14px; font-size: 14px; }
.hero { min-height: 720px; display: grid; align-items: center; padding: 88px 0; overflow: hidden; background: radial-gradient(circle at 75% 35%, rgba(201,255,54,.17), transparent 28%), linear-gradient(135deg, #07130f, #10251b); }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 58px; align-items: center; }
.eyebrow { margin: 0 0 14px; color: var(--lime); font-weight: 900; letter-spacing: .13em; text-transform: uppercase; font-size: 13px; }
h1, h2, h3 { margin-top: 0; line-height: 1.03; letter-spacing: -.045em; }
h1 { max-width: 760px; margin-bottom: 22px; font-size: clamp(48px, 8vw, 92px); }
h2 { margin-bottom: 18px; font-size: clamp(34px, 5vw, 58px); }
h3 { font-size: 24px; }
.lead { max-width: 660px; color: #ced8d2; font-size: clamp(18px, 2vw, 22px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.proof { display: flex; gap: 28px; margin-top: 42px; color: var(--muted); }
.proof strong { display: block; color: var(--cream); font-size: 24px; }
.score-card { position: relative; padding: 34px; border: 1px solid rgba(201,255,54,.25); border-radius: 34px; background: linear-gradient(145deg, rgba(255,255,255,.08), rgba(255,255,255,.02)); box-shadow: 0 30px 80px rgba(0,0,0,.35); }
.score-card::after { content: "21"; position: absolute; right: 24px; top: 2px; color: rgba(201,255,54,.09); font-size: 150px; font-weight: 950; line-height: 1; }
.day-list { position: relative; display: grid; gap: 12px; z-index: 1; }
.day-row { display: flex; align-items: center; gap: 13px; padding: 14px; border-radius: 14px; background: rgba(7,19,15,.62); }
.day-dot { display: grid; place-items: center; width: 34px; height: 34px; flex: 0 0 auto; border-radius: 50%; color: var(--ink); background: var(--lime); font-weight: 900; }
.day-row small { display: block; color: var(--muted); }
.section { padding: 96px 0; }
.section.alt { background: #0c1b15; }
.section-head { max-width: 740px; margin-bottom: 40px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.card-number { color: var(--lime); font-size: 14px; font-weight: 900; }
.card p { color: var(--muted); }
.timeline { display: grid; gap: 14px; }
.timeline-item { display: grid; grid-template-columns: 90px 1fr auto; gap: 18px; align-items: center; padding: 18px 20px; border: 1px solid var(--line); border-radius: 16px; background: var(--panel); }
.timeline-item strong:first-child { color: var(--lime); }
.price-wrap { display: grid; grid-template-columns: 1fr .72fr; gap: 24px; align-items: stretch; }
.price-card { padding: 36px; border: 1px solid rgba(201,255,54,.4); border-radius: 28px; background: linear-gradient(145deg, #1a3428, #102119); }
.price { margin: 10px 0; font-size: clamp(46px, 7vw, 78px); font-weight: 950; letter-spacing: -.06em; }
.old-price { color: var(--muted); text-decoration: line-through; }
.checklist { margin: 24px 0; padding: 0; list-style: none; }
.checklist li { margin: 10px 0; }
.checklist li::before { content: "✓"; margin-right: 10px; color: var(--lime); font-weight: 900; }
.form-card { padding: 30px; border-radius: 28px; color: var(--ink); background: var(--cream); }
.field { margin-bottom: 14px; }
.field label { display: block; margin-bottom: 6px; font-size: 14px; font-weight: 800; }
.field input, .field textarea { width: 100%; min-height: 48px; padding: 11px 13px; border: 1px solid #cbd0ca; border-radius: 12px; background: white; color: var(--ink); }
.field textarea { min-height: 88px; resize: vertical; }
.form-message { min-height: 24px; margin: 12px 0 0; font-weight: 700; }
.form-message.error { color: #b7241b; }
.form-message.success { color: #21763c; }
.dashboard { min-height: 100vh; padding: 36px 0 80px; }
.dash-head { display: flex; justify-content: space-between; gap: 20px; align-items: center; margin-bottom: 28px; }
.dash-grid { display: grid; grid-template-columns: 290px 1fr; gap: 22px; align-items: start; }
.sidebar { position: sticky; top: 92px; max-height: calc(100vh - 112px); overflow: auto; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.lesson-link { width: 100%; display: flex; align-items: center; gap: 10px; margin: 4px 0; padding: 11px; border: 0; border-radius: 11px; color: var(--cream); background: transparent; text-align: left; }
.lesson-link:hover, .lesson-link.active { background: var(--panel-2); }
.lesson-link.locked { opacity: .44; cursor: not-allowed; }
.lesson-link .status { margin-left: auto; }
.lesson-shell { min-height: 620px; padding: clamp(22px, 4vw, 42px); border: 1px solid var(--line); border-radius: 28px; background: var(--panel); }
.objective { margin: 22px 0; padding: 20px; border-left: 5px solid var(--lime); border-radius: 0 14px 14px 0; color: var(--ink); background: var(--lime); }
.objective small { display: block; margin-bottom: 5px; font-weight: 900; text-transform: uppercase; }
.media-placeholder { min-height: 330px; display: grid; place-items: center; margin: 24px 0; padding: 30px; border: 1px dashed rgba(201,255,54,.38); border-radius: 18px; background: #081711; color: var(--muted); text-align: center; }
.lesson-video { width: 100%; margin: 24px 0; border-radius: 18px; background: black; }
.image-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin: 20px 0; }
.image-grid img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 12px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.content-box { padding: 20px; border-radius: 16px; background: #0b1913; }
.content-box ol, .content-box ul { padding-left: 20px; }
.rubric { width: 100%; border-collapse: collapse; }
.rubric td { padding: 10px; border-bottom: 1px solid var(--line); }
.rubric td:last-child { text-align: right; color: var(--lime); font-weight: 900; }
.upload-box { margin-top: 24px; padding: 22px; border: 1px solid var(--line); border-radius: 18px; background: #0b1913; }
.progress { height: 9px; overflow: hidden; margin: 10px 0; border-radius: 99px; background: rgba(255,255,255,.1); }
.progress > span { display: block; height: 100%; background: var(--lime); }
.notice { padding: 14px 16px; border-radius: 12px; background: rgba(255,200,87,.13); color: #ffe1a0; }
.notice.success { background: rgba(114,229,155,.13); color: var(--success); }
.notice.danger { background: rgba(255,107,95,.13); color: #ffb5ae; }
.admin-stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin-bottom: 24px; }
.stat-card { padding: 22px; border: 1px solid var(--line); border-radius: 16px; background: var(--panel); }
.stat-card strong { display: block; font-size: 34px; color: var(--lime); }
.admin-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 20px; }
.list { display: grid; gap: 10px; }
.list-item { padding: 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
.list-item-head { display: flex; justify-content: space-between; gap: 12px; align-items: start; }
.tag { display: inline-flex; padding: 4px 9px; border-radius: 99px; font-size: 12px; font-weight: 900; background: rgba(255,255,255,.1); }
.tag.pending { color: var(--warning); }
.tag.approved, .tag.active { color: var(--success); }
.tag.retry { color: var(--danger); }
.review-form { display: grid; gap: 10px; margin-top: 12px; }
.rubric-inputs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.review-actions { display: grid; grid-template-columns: 1fr auto auto; gap: 8px; }
.review-form input, .review-form textarea, .review-form select { min-height: 42px; padding: 9px; border: 1px solid var(--line); border-radius: 10px; background: #08150f; color: white; }
.empty { padding: 30px; border: 1px dashed var(--line); border-radius: 16px; color: var(--muted); text-align: center; }
.hidden { display: none !important; }
footer { padding: 34px 0; border-top: 1px solid var(--line); color: var(--muted); }
@media (max-width: 850px) {
  .hero-grid, .price-wrap, .dash-grid, .admin-grid { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding: 70px 0; }
  .score-card { margin-top: 20px; }
  .nav-links a:not(.btn) { display: none; }
  .sidebar { position: static; max-height: 310px; }
  .two-col { grid-template-columns: 1fr; }
  .timeline-item { grid-template-columns: 70px 1fr; }
  .timeline-item span:last-child { grid-column: 2; }
  .admin-stats { grid-template-columns: 1fr; }
  .rubric-inputs, .review-actions { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .proof { gap: 16px; }
  .proof strong { font-size: 19px; }
  .image-grid { grid-template-columns: 1fr; }
  .dash-head { align-items: flex-start; flex-direction: column; }
}