:root{--bg:#0b1020;--panel:#121a31;--panel2:#17213d;--text:#eef4ff;--muted:#9eacc8;--line:#283657;--accent:#69e6ff;--green:#46e68c;--red:#ff647c;--yellow:#ffd166}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at top left,#19264a,#090d19 55%);color:var(--text);font-family:Inter,Arial,sans-serif}.app-shell{display:flex;min-height:100vh}.sidebar{width:250px;background:rgba(10,15,30,.92);border-right:1px solid var(--line);padding:22px;position:sticky;top:0;height:100vh}.brand{font-size:18px;font-weight:900;letter-spacing:.08em;margin-bottom:26px;color:var(--accent)}.sidebar a{display:block;color:var(--text);text-decoration:none;padding:12px 14px;border-radius:14px;margin:8px 0;background:transparent}.sidebar a:hover{background:var(--panel2)}.main{flex:1;padding:28px;max-width:1400px}.topbar,.card{background:linear-gradient(180deg,rgba(23,33,61,.96),rgba(18,26,49,.96));border:1px solid var(--line);border-radius:22px;box-shadow:0 20px 60px rgba(0,0,0,.25)}.topbar{padding:22px;margin-bottom:20px}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.stat{padding:20px}.stat b{font-size:32px;display:block}.muted{color:var(--muted)}.card{padding:22px;margin-bottom:20px}label{display:block;font-weight:800;margin:16px 0 8px}input,textarea,select{width:100%;background:#0e1529;color:var(--text);border:1px solid var(--line);border-radius:14px;padding:13px 14px;font-size:15px}textarea{resize:vertical}.btn{display:inline-flex;align-items:center;justify-content:center;border:none;border-radius:14px;padding:12px 18px;background:var(--accent);color:#06101f;font-weight:900;text-decoration:none;cursor:pointer}.btn.secondary{background:#253657;color:var(--text)}.btn.danger{background:var(--red);color:white}.btn.green{background:var(--green);color:#06101f}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}.table{width:100%;border-collapse:collapse}.table th,.table td{border-bottom:1px solid var(--line);padding:13px;text-align:left;vertical-align:top}.badge{display:inline-block;padding:5px 10px;border-radius:999px;background:#223154;color:var(--accent);font-size:12px;font-weight:800}.preview{background:#fff;color:#111;padding:28px;border-radius:18px;line-height:1.7}.preview h1,.preview h2,.preview h3{color:#111}.two-col{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}.notice{padding:14px;border-radius:14px;background:rgba(105,230,255,.1);border:1px solid rgba(105,230,255,.35);color:#dffaff}@media(max-width:900px){.app-shell{display:block}.sidebar{width:auto;height:auto;position:relative}.main{padding:16px}.grid,.two-col{grid-template-columns:1fr}.table{font-size:13px}}

/* SEO Engine Upgrade */
.scorebox{display:flex;align-items:flex-end;gap:6px;margin:14px 0 10px;padding:20px;border-radius:18px;background:linear-gradient(135deg,rgba(56,189,248,.16),rgba(34,197,94,.12));border:1px solid rgba(255,255,255,.12)}
.scorebox strong{font-size:52px;line-height:.9;letter-spacing:-2px}.scorebox span{font-size:18px;color:#94a3b8}.checklist{display:grid;gap:10px;margin-top:14px}.check{display:flex;gap:10px;align-items:flex-start;padding:10px;border-radius:12px;background:rgba(15,23,42,.5);border:1px solid rgba(255,255,255,.08)}.check b{display:grid;place-items:center;min-width:24px;height:24px;border-radius:50%;font-size:14px}.check.ok b{background:rgba(34,197,94,.22);color:#86efac}.check.bad b{background:rgba(251,191,36,.18);color:#fde68a}.check span{font-weight:700}.check small{display:block;color:#94a3b8;font-weight:400;margin-top:3px}.engine-note{margin:16px 0;padding:12px 14px;border-radius:14px;background:rgba(56,189,248,.10);border:1px solid rgba(56,189,248,.20);color:#cbd5e1}.preview h2{margin-top:26px}.preview h3{margin-top:18px;color:#e0f2fe}