:root{--ab-bg: #0E1621;--ab-surface: #17212B;--ab-card: #1E2C3A;--ab-border: #2B3A4A;--ab-accent: #2AABEE;--ab-accent-hover: #1E96D1;--ab-text: #F5F5F5;--ab-muted: #8A9AA9;--ab-green: #31B545;--ab-radius: 14px;--ab-radius-sm: 9px;--ab-font: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--ab-font);background:var(--ab-bg);color:var(--ab-text);line-height:1.6;-webkit-font-smoothing:antialiased}img,svg{max-width:100%}a{color:var(--ab-accent);text-decoration:none;transition:color .2s}a:hover{color:var(--ab-accent-hover)}.container{max-width:1080px;margin:0 auto;padding:0 24px}.hero{padding:96px 0 64px;text-align:center;background:radial-gradient(ellipse 80% 50% at 50% -10%,rgba(42,171,238,.18),transparent)}.hero-badge{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--ab-border);border-radius:999px;padding:6px 14px;font-size:.85rem;color:var(--ab-muted);margin-bottom:24px}.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--ab-green)}.hero-logo{width:96px;height:96px;margin:0 auto 24px;display:block}.hero-title{font-size:clamp(1.9rem,5vw,3rem);font-weight:800;line-height:1.15;letter-spacing:-.02em}.hero-title .accent{color:var(--ab-accent)}.hero-tagline{font-size:clamp(1.05rem,2.5vw,1.35rem);color:var(--ab-muted);margin-top:16px}.hero-desc{max-width:640px;margin:20px auto 0;color:var(--ab-muted)}.cta-btn{display:inline-flex;align-items:center;gap:10px;background:var(--ab-accent);color:#fff;font-weight:700;padding:14px 28px;border-radius:999px;margin-top:32px;transition:background .2s,transform .2s}.cta-btn:hover{background:var(--ab-accent-hover);color:#fff;transform:translateY(-2px)}.cta-btn svg{width:20px;height:20px}.hero-trust{margin-top:20px;font-size:.9rem;color:var(--ab-muted)}section{padding:64px 0}.section-title{font-size:clamp(1.5rem,3.5vw,2.1rem);font-weight:800;text-align:center;letter-spacing:-.01em}.section-subtitle{text-align:center;color:var(--ab-muted);margin:12px auto 40px;max-width:620px}.chat-demo-section{padding:0 0 32px}.chat-demo{max-width:460px;margin:0 auto;background:var(--ab-surface);border:1px solid var(--ab-border);border-radius:var(--ab-radius);padding:20px;display:flex;flex-direction:column;gap:12px}.chat-msg{max-width:85%;padding:10px 14px;border-radius:var(--ab-radius-sm);font-size:.92rem}.chat-msg-out{align-self:flex-end;background:#2b5278;border-bottom-right-radius:3px}.chat-msg-in{align-self:flex-start;background:var(--ab-card);border-bottom-left-radius:3px}.chat-meta{display:block;margin-top:6px;font-size:.75rem;color:#f5f5f58c}.voice-row{display:flex;align-items:center;gap:10px}.voice-play{width:34px;height:34px;border-radius:50%;background:var(--ab-accent);position:relative;flex-shrink:0}.voice-play:after{content:"";position:absolute;left:13px;top:10px;border-left:11px solid #fff;border-top:7px solid transparent;border-bottom:7px solid transparent}.voice-wave{display:flex;align-items:center;gap:2px;height:24px}.voice-wave i{width:3px;border-radius:2px;background:#f5f5f5bf}.voice-wave i:nth-child(4n+1){height:30%}.voice-wave i:nth-child(4n+2){height:75%}.voice-wave i:nth-child(4n+3){height:100%}.voice-wave i:nth-child(4n){height:55%}.voice-time{font-size:.75rem;color:#f5f5f58c}.chat-file{display:flex;align-items:center;gap:10px;margin-top:10px;background:#2aabee1f;border-radius:var(--ab-radius-sm);padding:8px 12px;font-size:.85rem}.chat-file-icon{background:var(--ab-accent);color:#fff;font-size:.65rem;font-weight:700;border-radius:6px;padding:6px 7px}.formats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px}.format-card{background:var(--ab-card);border:1px solid var(--ab-border);border-radius:var(--ab-radius);padding:24px 20px;transition:border-color .2s}.format-card:hover{border-color:var(--ab-accent)}.format-icon{display:inline-flex;width:40px;height:40px;color:var(--ab-accent);margin-bottom:14px}.format-card h3{font-size:1rem;margin-bottom:6px}.format-card p{font-size:.88rem;color:var(--ab-muted)}.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.step-card{background:var(--ab-surface);border:1px solid var(--ab-border);border-radius:var(--ab-radius);padding:28px 22px}.step-num{font-size:.85rem;font-weight:800;color:var(--ab-accent);letter-spacing:.12em}.step-card h3{margin:10px 0 8px;font-size:1.1rem}.step-card p{font-size:.92rem;color:var(--ab-muted)}.limits-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.limit-card{background:var(--ab-card);border:1px solid var(--ab-border);border-radius:var(--ab-radius);padding:28px 22px;text-align:center}.limit-value{font-size:2.2rem;font-weight:800;color:var(--ab-accent);display:block}.limit-card h3{font-size:1rem;margin:8px 0 6px}.limit-card p{font-size:.88rem;color:var(--ab-muted)}.limits-note{text-align:center;color:var(--ab-muted);margin-top:28px;font-size:.95rem;max-width:640px;margin-left:auto;margin-right:auto}.commands-list{max-width:640px;margin:0 auto;display:flex;flex-direction:column;gap:8px}.command-row{display:flex;align-items:baseline;gap:16px;background:var(--ab-surface);border:1px solid var(--ab-border);border-radius:var(--ab-radius-sm);padding:12px 18px}.command-row code{color:var(--ab-accent);font-weight:700;min-width:110px}.command-row span{color:var(--ab-muted);font-size:.92rem}@media(max-width:480px){.command-row{flex-direction:column;gap:4px}}.faq-list{max-width:720px;margin:40px auto 0;display:flex;flex-direction:column;gap:10px}.faq-item{background:var(--ab-surface);border:1px solid var(--ab-border);border-radius:var(--ab-radius-sm);padding:0}.faq-item summary{cursor:pointer;font-weight:600;padding:16px 44px 16px 20px;list-style:none;position:relative}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);color:var(--ab-accent);font-size:1.3rem;font-weight:400}.faq-item[open] summary:after{content:"–"}.faq-item p{padding:0 20px 16px;color:var(--ab-muted);font-size:.95rem}.final-cta{padding-top:16px}.ab-footer{border-top:1px solid var(--ab-border);padding:28px 0;text-align:center;color:var(--ab-muted);font-size:.9rem}