:root{--bg:#0b0f19;--card:#121a2a;--muted:#a6b3d1;--accent:#ff416c;--accent2:#ff4b2b;--text:#e9f0ff;--border:#223150;}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial;background:radial-gradient(1200px 600px at 20% 10%,#1a2a6c33,transparent),radial-gradient(900px 500px at 80% 10%,#b21f1f33,transparent),linear-gradient(180deg,#070a12,#0b0f19);color:var(--text);}
a{color:inherit}
.container{max-width:1100px;margin:0 auto;padding:24px}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 22px;border-bottom:1px solid var(--border);background:rgba(5,8,15,.65);backdrop-filter:blur(10px);position:sticky;top:0;z-index:10}
.brand{display:flex;align-items:center;gap:12px;font-weight:900;letter-spacing:.3px}
.brand .logo{width:36px;height:36px;border-radius:12px;background:linear-gradient(135deg,var(--accent2),var(--accent));box-shadow:0 12px 30px #ff4b2b33}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:12px;border:1px solid #263555;background:linear-gradient(180deg,#18233a,#111a2b);text-decoration:none;color:var(--text);cursor:pointer}
.btn.primary{border-color:#ff4b2b55;background:linear-gradient(180deg,var(--accent2),var(--accent))}
.btn.danger{border-color:#ff004455;background:linear-gradient(180deg,#3a1420,#1b0b10)}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}
.card{grid-column:span 12;background:rgba(18,26,42,.85);border:1px solid var(--border);border-radius:18px;padding:18px;box-shadow:0 20px 60px #00000055}
.muted{color:var(--muted)}
.input, textarea, select{width:100%;padding:12px;border-radius:14px;border:1px solid #253452;background:#0c1322;color:var(--text);outline:none}
textarea{min-height:110px;resize:vertical}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:10px;border-bottom:1px solid #23324f;text-align:left;vertical-align:top}
.badge{display:inline-block;padding:4px 10px;border-radius:999px;border:1px solid #2b3a5b;color:var(--muted);font-size:12px}
.notice{padding:12px 14px;border:1px solid #29406b;border-radius:14px;background:rgba(17,26,43,.7)}
hr{border:none;border-top:1px solid var(--border);margin:16px 0}
.kbd{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;padding:2px 6px;border:1px solid #2b3a5b;border-bottom-width:2px;border-radius:8px;color:var(--muted)}
.slide-frame{min-height:460px;border:1px solid #23324f;border-radius:18px;padding:22px;background:linear-gradient(180deg,#0b1325,#0a1020)}
.slide-title{font-size:30px;font-weight:900;margin:0 0 10px 0}
.slide-body{font-size:18px;line-height:1.6}
.drag-handle{cursor:grab; user-select:none}
.footer{padding:26px 20px;color:var(--muted);text-align:center}
small{color:var(--muted)}