:root{color-scheme:light dark;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.5}body{margin:0;padding:0;background:#f6f5f4;color:#1f1f1f}main{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:4rem 1.5rem}.card{max-width:480px;width:100%;background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(15,23,42,.15);padding:2.5rem}.card-xl{max-width:920px}.card-lg{max-width:860px}.card h1{margin-top:0;font-size:1.8rem}.card p{color:#475569;margin-bottom:1.5rem}.card a{color:#2563eb;text-decoration:none;font-weight:600}.card button.primary{display:inline-flex;align-items:center;justify-content:center;padding:.65rem 1.5rem;background:#1d4ed8;color:#fff;border:none;border-radius:.75rem;font-weight:600;cursor:pointer;transition:background .15s ease-in-out}.card button.primary:disabled{opacity:.65;cursor:not-allowed}.card button.primary:not(:disabled):hover{background:#1e40af}.pill{display:inline-flex;align-items:center;gap:.35rem;padding:.35rem .75rem;border-radius:999px;background:rgba(37,99,235,.12);color:#1d4ed8;font-size:.8rem;font-weight:600;letter-spacing:.02em;text-transform:uppercase}.pill.gray{background:#f1f5f9;color:#475569}.pill.small{font-size:.72rem;padding:.25rem .6rem}.muted{color:#64748b}.muted-sm{color:#94a3b8;font-size:.9rem}.list{list-style:none;margin:0;padding:0}.list-item{display:flex;justify-content:space-between;gap:1rem;border-bottom:1px solid #e2e8f0;padding:.6rem 0}.list-item a{font-weight:600;color:#1d4ed8;text-decoration:none}.list-item a:hover{text-decoration:underline}.angle-card{border:1px solid #e2e8f0;border-radius:14px;padding:.9rem;background:#fff}.angle-card h3{margin:0;font-size:1rem;color:#1f2937}.angle-card p{margin:.25rem 0}.source-card{border:1px solid #e2e8f0;border-radius:12px;padding:.85rem;background:#fff}