:root{--brand-green:#1d5742;--brand-navy:#1f3873;--bg:#f4f4f2;--card:#ffffff;--text:#22302b;--muted:#6b6b6b;--border:#e0e0dc;--danger:#a33a2e}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,Segoe UI,Arial,Helvetica,sans-serif;font-size:15px;line-height:1.5}.container{max-width:1000px;margin:0 auto;padding:24px 16px 64px}.nav{background:var(--brand-green);color:#fff}.nav-inner{max-width:1000px;margin:0 auto;padding:14px 16px;display:flex;align-items:baseline;gap:24px;flex-wrap:wrap}.nav-brand{font-weight:700;letter-spacing:2px;font-size:15px}.nav-sub{font-size:12px;color:#cfe0d8;letter-spacing:1px}.nav a{color:#fff;text-decoration:none;font-size:14px;opacity:.9}.nav a:hover{opacity:1;text-decoration:underline}.nav-links{display:flex;gap:18px;margin-left:auto}.card{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:20px;margin-bottom:16px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));grid-gap:12px;gap:12px}.stat{text-align:center;padding:18px 8px}.stat .num{font-size:30px;font-weight:700;color:var(--brand-navy)}.stat .label{font-size:12px;text-transform:uppercase;letter-spacing:1px;color:var(--muted)}h1{font-size:22px;color:var(--brand-green);margin:0 0 16px}h2{font-size:16px;margin:0 0 12px}label.field,p.muted,span.muted{color:var(--muted);font-size:13px}label.field{display:block;margin-bottom:12px}input[type=email],input[type=text],input[type=url],select,textarea{width:100%;padding:9px 10px;margin-top:4px;border:1px solid var(--border);border-radius:6px;font:inherit;color:var(--text);background:#fff}input:focus,select:focus,textarea:focus{outline:2px solid var(--brand-green);outline-offset:-1px}textarea{resize:vertical}.row{display:flex;gap:12px;flex-wrap:wrap}.row>*{flex:1 1;min-width:160px}button{font:inherit;border:none;border-radius:6px;cursor:pointer;padding:9px 18px;background:var(--brand-green);color:#fff;font-weight:600}button:hover{filter:brightness(1.08)}button:disabled{opacity:.5;cursor:default}button.secondary{background:#fff;color:var(--brand-green);border:1px solid var(--brand-green)}button.navy{background:var(--brand-navy)}button.danger-link{color:var(--danger)}button.danger-link,button.link{background:none;padding:2px 6px;font-weight:400;font-size:13px}button.link{color:var(--brand-green)}table.data{width:100%;border-collapse:collapse;font-size:14px}table.data th{text-align:left;padding:8px 10px;border-bottom:2px solid var(--border);font-size:12px;text-transform:uppercase;letter-spacing:1px;color:var(--muted)}table.data td{padding:8px 10px;border-bottom:1px solid var(--border);vertical-align:top}.tag{display:inline-block;background:#e7efe9;border-radius:10px;padding:1px 9px;font-size:12px;margin:1px 3px 1px 0}.tag,.tag button{color:var(--brand-green)}.tag button{background:none;padding:0 0 0 4px;font-size:11px}.status-unsubscribed{color:var(--danger);font-size:12px}.status-subscribed{color:var(--brand-green);font-size:12px}.steps{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}.step{padding:5px 14px;border-radius:16px;font-size:13px;background:#e7e7e3;color:var(--muted)}.step.active{background:var(--brand-navy);color:#fff}.step.done{background:#e7efe9;color:var(--brand-green)}.mode-pick{display:grid;grid-template-columns:1fr 1fr;grid-gap:12px;gap:12px}.mode-card{border:2px solid var(--border);border-radius:8px;padding:18px;cursor:pointer;background:#fff;text-align:left;color:var(--text);font-weight:400}.mode-card:hover{border-color:var(--brand-green);filter:none}.mode-card.selected{border-color:var(--brand-green);background:#f2f7f4}.mode-card b{color:var(--brand-green)}.mode-card p{margin:6px 0 0;font-size:13px;color:var(--muted)}.preview-frame{width:100%;height:640px}.preview-frame,pre.plain-preview{border:1px solid var(--border);border-radius:8px;background:#fff}pre.plain-preview{white-space:pre-wrap;padding:20px;font-family:inherit;font-size:14px}.notice{background:#fdf6e3;border:1px solid #e8d9a0;border-radius:6px;padding:10px 14px;font-size:13px;margin-bottom:12px}.ca-text{white-space:pre-wrap;max-height:420px;overflow-y:auto;background:#fafaf8;border:1px solid var(--border);border-radius:6px;padding:18px;font-family:Georgia,Times New Roman,serif;font-size:13.5px;line-height:1.55;margin-bottom:16px}code{background:#eee;padding:1px 5px;border-radius:4px;font-size:12.5px}.result-ok{background:#eef7f1;border:1px solid #bcd9c8;border-radius:6px;padding:12px 16px}.result-err{background:#faeeec;border:1px solid #e3b8b1;border-radius:6px;padding:12px 16px}@media (max-width:640px){.mode-pick{grid-template-columns:1fr}.preview-frame{height:480px}}