:root{--bg:#0a0e1a;--card:#121a2e;--card2:#182238;--bd:#22304d;--tx:#dce6f5;--mut:#7c8aa5;--acc:#5b8cff;--acc2:#21c97a}*{box-sizing:border-box}body,html{padding:0;margin:0}body{font:15px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--tx)}a{color:var(--acc);text-decoration:none}a:hover{text-decoration:underline}.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--bd);background:var(--card);position:-webkit-sticky;position:sticky;top:0;z-index:10;flex-wrap:wrap;gap:10px}.topbar .brand{font-weight:800;font-size:17px;color:var(--tx)}.topbar nav{display:flex;gap:18px}.topbar nav a{color:var(--tx);font-weight:600;font-size:14px}.topbar nav a:hover{color:var(--acc)}.wrap{max-width:980px;margin:0 auto;padding:28px 18px 60px}.foot{color:var(--mut);font-size:12px;padding:24px}.foot,.hero{text-align:center}.hero{margin:10px 0 36px}.hero h1{font-size:26px;margin:0 0 8px}.hero p{color:var(--mut);margin:0;font-size:14px}.section-title{font-size:16px;font-weight:800;color:var(--acc);text-transform:uppercase;letter-spacing:.5px;margin:34px 0 14px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));grid-gap:14px;gap:14px}.card{background:var(--card);border:1px solid var(--bd);border-radius:14px;padding:16px 18px;transition:border-color .15s,transform .15s}.card:hover{border-color:var(--acc);transform:translateY(-2px)}.card a.card-link{text-decoration:none;color:inherit;display:block}.card h3{margin:0 0 6px;font-size:15px;color:var(--tx)}.card .tag{display:inline-block;font-size:11px;font-weight:700;color:var(--acc2);background:#21c97a22;border:1px solid #21c97a55;border-radius:8px;padding:2px 8px;margin-bottom:8px}.card p{margin:0;color:var(--mut);font-size:13px;line-height:1.5}.card .badge-video{float:right;font-size:11px;color:#ffb020}.detail-head{margin-bottom:20px}.detail-head .tag{display:inline-block;font-size:12px;font-weight:700;color:var(--acc);background:#5b8cff22;border:1px solid #5b8cff55;border-radius:8px;padding:3px 10px;margin-bottom:10px}.detail-head h1{margin:0 0 6px;font-size:22px}.detail-head .sub{color:var(--mut);font-family:ui-monospace,monospace;font-size:13px}.video-embed{position:relative;width:100%;margin:18px 0;border-radius:12px;overflow:hidden;border:1px solid var(--bd);background:#000;display:flex;justify-content:center}.video-embed.ratio-16-9{padding-top:56.25%}.video-embed.ratio-16-9 iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.video-embed video{display:block;width:auto;max-width:100%;max-height:78vh}.video-empty{padding:30px;text-align:center;color:var(--mut);background:var(--card2);border:1px dashed var(--bd);border-radius:12px;margin:18px 0;font-size:13px}.prose{white-space:pre-wrap;line-height:1.7;font-size:14px}.steps{background:var(--card2);border:1px solid var(--bd);border-radius:12px;padding:16px 18px;margin-top:16px}.steps h4{margin:0 0 10px;font-size:13px;color:var(--acc2);text-transform:uppercase;letter-spacing:.4px}.btn{display:inline-block;padding:10px 18px;border-radius:10px;background:linear-gradient(100deg,#1565c0,#1976d2);color:#fff;font-weight:700;font-size:13px;border:none;cursor:pointer}.btn.green{background:linear-gradient(100deg,#16a34a,#21c97a)}.btn.red{background:linear-gradient(100deg,#b91c1c,#dc2626)}.btn.ghost{background:transparent;border:1px solid var(--bd);color:var(--tx)}.back-link{display:inline-block;margin-bottom:16px;color:var(--mut);font-size:13px}.admin-form{display:grid;grid-gap:12px;gap:12px;background:var(--card);border:1px solid var(--bd);border-radius:14px;padding:20px;margin-bottom:24px}.admin-form label{font-size:12px;font-weight:700;color:var(--mut);text-transform:uppercase;letter-spacing:.3px;display:block;margin-bottom:5px}.admin-form input,.admin-form select,.admin-form textarea{width:100%;padding:10px 12px;border-radius:9px;border:1px solid var(--bd);background:#0d1626;color:var(--tx);font:inherit;font-size:14px}.admin-form textarea{min-height:90px;resize:vertical}.admin-row{display:flex;gap:10px;flex-wrap:wrap}.admin-list-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;border:1px solid var(--bd);border-radius:12px;margin-bottom:8px;background:var(--card)}.admin-list-item .info{min-width:0}.admin-list-item .info b{display:block;font-size:14px}.admin-list-item .info span{color:var(--mut);font-size:12px}.admin-actions{display:flex;gap:8px;flex-shrink:0}.admin-actions button{padding:6px 12px;font-size:12px;border-radius:8px;border:1px solid var(--bd);background:#0d1626;color:var(--tx);cursor:pointer}.admin-actions button:hover{border-color:var(--acc)}.empty{text-align:center;color:var(--mut);padding:40px 20px}