:root{--brand:#0b4a8b;--brand-dark:#073766;--accent:#f0b429;--bg:#f3f6fa}
body{background:var(--bg);color:#1f2937}.navbar-brand{font-weight:750}.hero{background:linear-gradient(135deg,var(--brand-dark),var(--brand));color:#fff;border-radius:1.25rem}.card{border:0;box-shadow:0 8px 28px rgba(15,23,42,.08)}.channel-card{position:relative;cursor:pointer;border:2px solid transparent;transition:.18s ease}.channel-card:hover{transform:translateY(-2px)}.channel-card:has(input:checked){border-color:var(--brand);background:#eef6ff}.channel-card input{position:absolute;opacity:0}.stat-card .display-6{font-weight:750}.table td,.table th{vertical-align:middle}.badge-sandbox{background:var(--accent);color:#1f2937}.code-block{white-space:pre-wrap;word-break:break-word;background:#0f172a;color:#e2e8f0;border-radius:.8rem;padding:1rem;font-size:.82rem}.footer-note{font-size:.84rem;color:#64748b}.form-label{font-weight:600}