:root{--bg:#f6f8fb;--panel:#fff;--ink:#0f172a;--muted:#64748b;--line:#e5e7eb;--blue:#635bff;--cyan:#00d4ff;--green:#12b76a;--red:#ef4444;--shadow:0 20px 60px rgba(15,23,42,.08)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.5 Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial}a{color:var(--blue);text-decoration:none}.sidebar{position:fixed;inset:0 auto 0 0;width:270px;background:#0b1020;color:#cbd5e1;padding:24px;display:flex;flex-direction:column;box-shadow:var(--shadow)}.brand{display:flex;align-items:center;gap:12px;font-weight:800}.mark{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--blue),var(--cyan));display:grid;place-items:center;color:#fff;font-weight:900}.sidebar nav{display:grid;gap:6px;margin-top:34px}.sidebar nav a{color:#a9b4c7;padding:10px 12px;border-radius:10px}.sidebar nav a:hover{background:rgba(255,255,255,.08);color:#fff}.side-foot{margin-top:auto;display:grid;gap:8px}.main{margin-left:270px;padding:28px}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.topbar h1{font-size:28px;margin:0}.topbar p{margin:4px 0 0;color:var(--muted)}.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:10px;padding:10px 14px;background:#fff;color:var(--ink);font-weight:700;cursor:pointer}.btn.primary{background:linear-gradient(135deg,var(--blue),#7c3aed);color:#fff;border:0}.btn.ghost{background:#fff}.btn.full{width:100%}.panel,.metric{background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.panel{padding:22px;margin-bottom:20px}.panel.narrow{max-width:850px}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:20px}.metric{padding:18px}.metric span,.metric small{display:block;color:var(--muted)}.metric strong{display:block;font-size:28px;margin:8px 0}.module-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.module{padding:18px;border:1px solid var(--line);border-radius:14px;background:#fbfdff}.module b{display:block}.module span{color:var(--green);font-size:12px}.badge{display:inline-flex;border-radius:999px;padding:4px 9px;background:#eef2ff;color:#3730a3;font-size:12px;font-weight:800}.badge.success{background:#ecfdf3;color:#067647}.alert{padding:12px 14px;border-radius:12px;margin-bottom:16px}.alert.success{background:#ecfdf3;color:#067647}.alert.danger{background:#fef2f2;color:#991b1b}table{width:100%;border-collapse:collapse}td,th{text-align:left;border-bottom:1px solid var(--line);padding:12px}th{color:var(--muted);font-size:12px;text-transform:uppercase}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}label{display:grid;gap:7px;font-weight:700}input,textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:11px 12px;font:inherit;background:#fff}.wide{grid-column:1/-1}.auth{min-height:100vh;display:grid;place-items:center;background:radial-gradient(circle at 20% 10%,#dbeafe,transparent 30%),radial-gradient(circle at 90% 20%,#ede9fe,transparent 32%),#f8fafc}.auth-shell{width:min(1100px,94vw);display:grid;grid-template-columns:1.1fr .9fr;gap:24px}.auth-hero,.auth-card,.checkout-card{background:rgba(255,255,255,.8);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.8);border-radius:28px;box-shadow:var(--shadow);padding:34px}.auth-hero h1{font-size:48px;line-height:1;margin:50px 0 16px}.auth-hero p{font-size:18px;color:var(--muted)}.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:28px}.hero-grid span{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px;font-weight:800}.checkout{min-height:100vh;display:grid;place-items:center;background:#0b1020}.checkout-card{width:min(480px,92vw)}.amount{font-size:40px;font-weight:900;margin:18px 0}.code,pre{background:#0b1020;color:#dbeafe;border-radius:14px;padding:18px;overflow:auto}.empty{padding:40px;border:1px dashed var(--line);border-radius:16px;color:var(--muted);text-align:center}@media(max-width:1000px){.sidebar{position:static;width:auto}.main{margin:0}.metrics,.module-grid,.auth-shell{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}}