:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;--wa-green: #25d366;--wa-dark: #075e54;--accent: #4c5fff;--bg: #f5f6f7;--card: #ffffff;--border: #e3e5e8;--text: #1b1f23;--muted: #6b7280}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}.shell{max-width:960px;margin:0 auto;padding:24px 20px 60px}.topbar{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;background:var(--wa-dark);color:#fff}.topbar a{color:#fff;text-decoration:none;font-weight:600}.topbar button{background:transparent;border:1px solid rgba(255,255,255,.5);color:#fff;padding:6px 12px;border-radius:6px;cursor:pointer}.card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:20px}h1,h2,h3{margin-top:0}.tabs{display:flex;gap:8px;margin-bottom:20px;flex-wrap:wrap}.tabs button{padding:8px 14px;border-radius:20px;border:1px solid var(--border);background:#fff;cursor:pointer;font-size:14px}.tabs button.active{background:var(--wa-green);color:#fff;border-color:var(--wa-green)}label{display:block;font-size:13px;color:var(--muted);margin:10px 0 4px}input,select,textarea{width:100%;padding:8px 10px;border-radius:6px;border:1px solid var(--border);font-size:14px}.btn{display:inline-block;background:var(--wa-green);color:#fff;border:none;padding:10px 16px;border-radius:6px;cursor:pointer;font-weight:600;font-size:14px;margin-top:12px;text-decoration:none}.btn.secondary{background:#fff;color:var(--text);border:1px solid var(--border)}.btn.danger{background:#d7263d}.row{display:flex;gap:12px}.row>*{flex:1}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:8px;border-bottom:1px solid var(--border)}.error{color:#d7263d;font-size:13px;margin-top:8px}.muted{color:var(--muted);font-size:13px}.chat-window{height:420px;overflow-y:auto;background:#e5ddd5;border-radius:10px;padding:12px;display:flex;flex-direction:column;gap:8px}.bubble{max-width:75%;padding:8px 12px;border-radius:8px;font-size:14px;line-height:1.4;white-space:pre-wrap}.bubble.customer{align-self:flex-end;background:#dcf8c6}.bubble.agent{align-self:flex-start;background:#fff}.chat-input{display:flex;gap:8px;margin-top:12px}.chat-input input{flex:1}.eyebrow{text-transform:uppercase;letter-spacing:1px;font-size:12px;font-weight:700;color:var(--wa-green);margin-bottom:12px}.hero{padding:80px 20px 40px;text-align:center}.hero-title{font-size:44px;line-height:1.15;margin-bottom:16px;max-width:760px;margin-left:auto;margin-right:auto}.hero-subtitle{color:var(--muted);font-size:18px;max-width:580px;margin:0 auto 28px}.hero-cta-row{display:flex;gap:12px;justify-content:center;margin-bottom:56px}.hero-cta-row .btn{margin-top:0}.hero-art{max-width:600px;margin:0 auto}.section{padding:64px 20px;text-align:center}.section-title{font-size:30px;margin-bottom:12px}.section-subtitle{color:var(--muted);font-size:16px;max-width:560px;margin:0 auto 40px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;text-align:left}.step-num{width:32px;height:32px;border-radius:50%;background:var(--wa-dark);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;margin-bottom:12px}.features-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;text-align:left}.feature-card{margin-bottom:0}.stats-bar{background:var(--wa-dark);padding:40px 20px}.stats-row{display:flex;justify-content:space-around;text-align:center;padding:0}.stat-value{font-size:32px;font-weight:700;color:#fff}.stat-label{font-size:13px;color:#ffffffb3;margin-top:4px}.cta-section{background:var(--card);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.footer{padding:32px 0;font-size:13px;font-weight:600}.footer .shell{display:flex;justify-content:space-between;align-items:center;padding:0 20px}@media (max-width: 720px){.steps,.features-grid,.stats-row{grid-template-columns:1fr;flex-direction:column;gap:24px}.hero-title{font-size:32px}}