:root{
  --bg:#061018;--bg2:#0b1d2a;--card:#102838;--card2:#0d2230;--text:#eaf8ff;--muted:#a9c4d1;--soft:#83aebe;
  --line:rgba(180,230,255,.16);--accent:#2fd3ff;--accent2:#7cf2c7;--warn:#ffd166;--danger:#ff6b6b;--max:1180px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:radial-gradient(circle at 20% 0%,rgba(47,211,255,.15),transparent 32rem),radial-gradient(circle at 85% 5%,rgba(124,242,199,.11),transparent 26rem),linear-gradient(180deg,#03101a 0%,#061018 44%,#02070b 100%);line-height:1.68}
a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}
.site-header{position:sticky;top:0;z-index:50;backdrop-filter:blur(18px);background:rgba(4,16,24,.84);border-bottom:1px solid var(--line)}
.nav{max-width:var(--max);margin:0 auto;padding:.9rem 1.25rem;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.brand{display:flex;align-items:center;gap:.75rem;font-weight:900;letter-spacing:-.03em;font-size:1.16rem;white-space:nowrap}.brand-mark{width:2.2rem;height:2.2rem;border-radius:.75rem;background:radial-gradient(circle at 35% 30%,#fff 0%,#8befff 16%,transparent 18%),linear-gradient(145deg,var(--accent),#155b78 55%,#092436);box-shadow:0 0 28px rgba(47,211,255,.35)}
.nav-links{display:flex;align-items:center;flex-wrap:wrap;gap:.35rem;justify-content:flex-end}.nav-links a{color:var(--muted);font-size:.94rem;padding:.45rem .7rem;border-radius:999px}.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.06)}
.hero{max-width:var(--max);margin:0 auto;padding:5rem 1.25rem 2.5rem;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(300px,.95fr);gap:2rem;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:.5rem;color:var(--accent2);background:rgba(124,242,199,.1);border:1px solid rgba(124,242,199,.22);border-radius:999px;padding:.42rem .75rem;font-weight:800;font-size:.87rem;margin-bottom:1.2rem}
h1,h2,h3{line-height:1.15;letter-spacing:-.045em;margin:0 0 1rem}h1{font-size:clamp(2.6rem,6vw,5.2rem);max-width:13ch}h2{font-size:clamp(1.8rem,4vw,2.7rem);margin-top:0}h3{font-size:1.28rem;letter-spacing:-.025em}
p{margin:0 0 1rem}.lead{font-size:1.15rem;color:var(--muted);max-width:70ch}.button-row{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.3rem}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:.78rem 1rem;font-weight:900;border:1px solid transparent}.btn.primary{background:linear-gradient(135deg,var(--accent),#167da2);color:#00131d}.btn.secondary{border-color:var(--line);background:rgba(255,255,255,.05);color:var(--text)}
.hero-card,.card,.content-card{border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.025));border-radius:1.55rem;padding:1.2rem;box-shadow:0 18px 52px rgba(0,0,0,.18)}
.stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem}.stat{background:rgba(255,255,255,.045);border:1px solid var(--line);border-radius:1.1rem;padding:.9rem}.stat strong{display:block;font-size:1.25rem}.stat span{color:var(--muted);font-size:.9rem}
.platform-cta,.quick-links{display:flex;align-items:center;flex-wrap:wrap;gap:.6rem;margin-top:1rem}.quick-links a,.platform-cta a{border:1px solid rgba(47,211,255,.22);background:rgba(47,211,255,.08);color:var(--text);border-radius:999px;padding:.5rem .75rem;font-weight:800;font-size:.9rem}.platform-cta span{color:var(--soft);font-weight:900}.quick-links a:hover,.platform-cta a:hover{color:var(--accent2);border-color:rgba(124,242,199,.45)}
.section,.article{max-width:var(--max);margin:0 auto;padding:3.8rem 1.25rem}.section-intro{max-width:760px;color:var(--muted);font-size:1.05rem;margin-bottom:1.8rem}
.grid{display:grid;gap:1rem}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.card p,.content-card p,.article-section p,.article-section li{color:var(--muted)}
.module-grid,.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.85rem;margin-top:1.2rem}.module-tile,.related-card{border:1px solid var(--line);background:rgba(255,255,255,.045);border-radius:1.15rem;padding:1rem}.module-tile strong,.related-card strong{display:block;margin-bottom:.35rem}.module-tile span,.related-card span{display:block;color:var(--muted);font-size:.9rem}
.article{display:grid;grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr);gap:2rem;align-items:start}.toc{position:sticky;top:5.8rem}.toc a{display:block;color:var(--muted);padding:.42rem 0;border-bottom:1px solid rgba(255,255,255,.06);font-weight:700}.toc a:hover{color:var(--accent)}
.article-body{min-width:0}.article-section{border-top:1px solid var(--line);padding-top:2.2rem;margin-top:2.2rem}.article-section:first-child{border-top:0;padding-top:0;margin-top:0}.meta-box{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.7rem;margin:1.2rem 0}.meta-item{border:1px solid var(--line);border-radius:1rem;padding:.8rem;background:rgba(255,255,255,.045)}.meta-item strong{display:block}.meta-item span{color:var(--muted);font-size:.9rem}
.answer-box{border:1px solid rgba(124,242,199,.28);background:rgba(124,242,199,.08);border-radius:1.2rem;padding:1rem;margin:1.2rem 0}.notice{border:1px solid rgba(255,209,102,.3);background:rgba(255,209,102,.08);color:#ffe9ab;border-radius:1.2rem;padding:1rem;margin:1.2rem 0}
ul{margin:0 0 1rem;padding-left:1.2rem}li{margin:.36rem 0}details{border:1px solid var(--line);border-radius:1.05rem;background:rgba(255,255,255,.04);padding:1rem;margin:.75rem 0}summary{cursor:pointer;font-weight:900}details p{margin-top:.75rem;margin-bottom:0}
.video-card{border:1px solid var(--line);border-radius:1.3rem;overflow:hidden;background:rgba(255,255,255,.04)}.video-frame{position:relative;aspect-ratio:16/9;background:#000}.video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.video-body{padding:1rem}
.footer{border-top:1px solid var(--line);background:rgba(0,0,0,.18);margin-top:3rem}.footer-inner{max-width:var(--max);margin:0 auto;padding:2.4rem 1.25rem;display:grid;grid-template-columns:1.2fr .8fr;gap:2rem;color:var(--muted)}.footer-links{display:flex;flex-wrap:wrap;gap:.7rem 1rem;justify-content:flex-end}.footer-links a{font-weight:800;color:var(--muted)}
@media(max-width:900px){.nav{align-items:flex-start;flex-direction:column}.nav-links{justify-content:flex-start}.hero,.article{grid-template-columns:1fr}.hero-card{order:-1}.toc{position:static}.grid-3,.grid-2,.module-grid,.related-grid,.footer-inner,.meta-box,.card-grid{grid-template-columns:1fr}.footer-links{justify-content:flex-start}}
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem;margin-top:1rem}.card-grid a.card{display:flex;gap:1rem;align-items:flex-start;text-decoration:none;color:inherit;transition:border-color .15s}.card-grid a.card:hover{border-color:var(--accent)}.card-grid a.card img{width:56px;height:56px;object-fit:contain;flex-shrink:0;border-radius:.5rem;background:rgba(255,255,255,.05);padding:.25rem}.card-body{flex:1;min-width:0}.card-body h2{font-size:1rem;margin:0 0 .25rem;color:var(--text)}.card-meta{font-size:.8rem;color:var(--soft);margin:0 0 .3rem}.card-body p{font-size:.85rem;margin:0;color:var(--muted)}
.site-footer{border-top:1px solid var(--line);background:rgba(0,0,0,.18);margin-top:3rem;padding:2rem 1.25rem;text-align:center;color:var(--muted);font-size:.875rem}.site-footer a{color:var(--muted)}


.library-toolbar{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;margin:1rem 0 1.25rem}.library-search{width:min(100%,420px);border:1px solid var(--line);background:rgba(255,255,255,.055);color:var(--text);border-radius:999px;padding:.8rem 1rem;font:inherit;outline:none}.library-search::placeholder{color:var(--soft)}.library-search:focus{border-color:rgba(47,211,255,.55);box-shadow:0 0 0 3px rgba(47,211,255,.12)}.library-note{color:var(--soft);font-size:.92rem}.catalog-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.85rem;margin:1.2rem 0}.catalog-stat{border:1px solid var(--line);background:rgba(255,255,255,.045);border-radius:1.1rem;padding:1rem}.catalog-stat strong{display:block;font-size:1.65rem;line-height:1;color:var(--text)}.catalog-stat span{display:block;color:var(--muted);font-size:.9rem;margin-top:.35rem}.asset-library{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:.9rem;margin-top:1rem}.asset-card{display:flex;gap:.85rem;align-items:flex-start;border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.025));border-radius:1.15rem;padding:.9rem;color:inherit;transition:transform .15s ease,border-color .15s ease,background .15s ease}.asset-card:hover{transform:translateY(-2px);border-color:rgba(47,211,255,.45);background:rgba(47,211,255,.07);color:var(--text)}.asset-card[hidden]{display:none}.asset-card img{width:58px;height:58px;object-fit:contain;flex-shrink:0;border-radius:.7rem;background:rgba(255,255,255,.065);padding:.28rem}.asset-card b{display:block;font-size:1rem;letter-spacing:-.02em;margin-bottom:.2rem}.asset-card small{display:block;color:var(--accent2);font-weight:850;text-transform:uppercase;font-size:.72rem;letter-spacing:.08em;margin-bottom:.25rem}.asset-card span{display:block;color:var(--muted);font-size:.86rem;line-height:1.45}.asset-section-title{font-size:1.1rem;margin:1.5rem 0 .3rem;color:var(--text)}@media(max-width:900px){.catalog-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.asset-library{grid-template-columns:1fr}}@media(max-width:520px){.catalog-stats{grid-template-columns:1fr}}