:root {
  --bg0:#050a14; --bg1:#071022; --card:rgba(255,255,255,.06); --card2:rgba(255,255,255,.09);
  --text:#eaf0ff; --muted:rgba(234,240,255,.72); --muted2:rgba(234,240,255,.55);
  --line:rgba(255,255,255,.12); --accent:#39d3b3; --accent2:#7fb2ff; --warn:#ffd37a;
  --shadow:0 18px 55px rgba(0,0,0,.55); --radius:18px; --max:1120px;
}
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:radial-gradient(1200px 700px at 18% 20%,rgba(57,211,179,.16),transparent 60%),radial-gradient(900px 600px at 75% 35%,rgba(127,178,255,.14),transparent 60%),linear-gradient(180deg,var(--bg0),var(--bg1));min-height:100vh}
a{color:inherit}.wrap{max-width:var(--max);margin:0 auto;padding:0 18px}.site-header{position:sticky;top:0;z-index:20;background:rgba(5,10,20,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:12px 0}.brand{display:flex;align-items:center;gap:12px;text-decoration:none}.logo{width:58px;height:58px;object-fit:contain;border-radius:8px}.brand strong{display:block;font-size:14px}.sub{font-size:12px;color:var(--muted2)}
.menu{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.menu a,.btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;padding:10px 14px;text-decoration:none;font-weight:700;font-size:14px;border:1px solid var(--line);background:rgba(255,255,255,.04)}.menu a:hover,.btn:hover{background:rgba(255,255,255,.08)}.btn.primary{background:linear-gradient(90deg,rgba(57,211,179,.28),rgba(127,178,255,.18));border-color:rgba(57,211,179,.55)}
.hero{padding:66px 0 34px}.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:34px;align-items:center}.eyebrow{display:inline-flex;gap:8px;align-items:center;border:1px solid rgba(57,211,179,.32);background:rgba(57,211,179,.09);padding:8px 12px;border-radius:999px;font-size:13px;font-weight:700}.dot{width:8px;height:8px;border-radius:50%;background:var(--accent)}h1{font-size:clamp(34px,5vw,62px);line-height:1.04;margin:16px 0 14px}h2{font-size:clamp(25px,3vw,36px);margin:0 0 10px}h3{margin:0 0 8px}.lead{font-size:17px;line-height:1.7;color:var(--muted);max-width:68ch}.cover-card{padding:18px;background:var(--card);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}.cover-card img{display:block;width:100%;max-height:430px;object-fit:contain;border-radius:14px}
.section{padding:42px 0}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.pad{padding:22px}.grid{display:grid;gap:18px}.hub-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.book-card{display:grid;grid-template-columns:120px 1fr;gap:18px;align-items:center}.book-card img{width:120px;height:160px;object-fit:cover;border-radius:10px;border:1px solid var(--line)}
.notice{border-left:4px solid var(--accent);padding:16px 18px;background:rgba(57,211,179,.08);border-radius:12px;color:var(--muted)}.notice strong{color:var(--text)}
.access-shell{max-width:720px;margin:56px auto;padding:0 18px}.access-card{padding:28px}.field{display:grid;gap:8px;margin:18px 0}.field label{font-weight:800}.field input{width:100%;padding:14px 15px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.06);color:var(--text);font:inherit}.field input:focus{outline:3px solid rgba(127,178,255,.55);outline-offset:2px}.error{padding:12px 14px;border:1px solid rgba(255,120,120,.35);background:rgba(255,80,80,.08);border-radius:12px;color:#ffd7d7}
.library-top{display:flex;justify-content:space-between;gap:16px;align-items:flex-end;flex-wrap:wrap}.toolbar{display:grid;grid-template-columns:1fr 220px;gap:12px;margin-top:20px}.toolbar input,.toolbar select{min-height:44px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.06);color:var(--text);padding:10px 12px;font:inherit}.toolbar option{color:#111}.resource-grid{grid-template-columns:repeat(3,minmax(0,1fr));margin-top:20px}.resource-card{padding:18px;display:flex;flex-direction:column;gap:12px}.resource-card .meta{font-size:12px;color:var(--muted2);text-transform:uppercase;letter-spacing:.08em}.resource-card p{color:var(--muted);font-size:14px;line-height:1.55;margin:0;flex:1}.actions{display:flex;gap:8px;flex-wrap:wrap}.actions .btn{font-size:13px;padding:9px 11px}.btn.disabled{opacity:.46;cursor:not-allowed;pointer-events:none}.status{font-size:12px;color:var(--warn);font-weight:800}.count{color:var(--muted2);font-size:13px}.section-title{display:flex;justify-content:space-between;gap:12px;align-items:baseline;margin-top:34px}.chip{display:inline-flex;padding:6px 9px;border-radius:999px;border:1px solid var(--line);font-size:12px;color:var(--muted)}
footer{margin-top:52px;padding:28px 0 40px;border-top:1px solid var(--line);color:var(--muted2);font-size:13px;line-height:1.7}.footer-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}
@media(max-width:850px){.hero-grid,.hub-grid{grid-template-columns:1fr}.resource-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.toolbar{grid-template-columns:1fr}.nav{flex-wrap:wrap}.menu{width:100%}.cover-card{max-width:420px}.book-card{grid-template-columns:90px 1fr}.book-card img{width:90px;height:120px}}
@media(max-width:560px){.resource-grid{grid-template-columns:1fr}.hero{padding-top:42px}.access-card{padding:20px}.book-card{grid-template-columns:1fr}.book-card img{width:120px;height:160px}}

.access-intro{display:grid;grid-template-columns:130px minmax(0,1fr);gap:22px;align-items:center}
button.btn{color:var(--text);font-family:inherit;cursor:pointer}
@media(max-width:560px){.access-intro{grid-template-columns:1fr}.brand{min-width:0}.brand strong{overflow-wrap:anywhere}.toolbar input,.toolbar select{min-width:0;width:100%}}