:root{--paper: #F1ECDF;--ink: #211D16;--vermilion: #F04E1E;--vermilion-hover: #D64312;--vermilion-tint: #FBE3D6;--vermilion-on-dark: #FF6A3B;--surface-white: #FDFAF2;--dark-surface-2: #2B261D;--muted: #6E6858;--border: #E2DBC9;--success: #6D8C3F;--success-tint: #E9EFDB;--error: #C13327;--error-tint: #F7DCD6;--font-sans: "Onest", "Golos Text", "Manrope", -apple-system, "Segoe UI", "Helvetica Neue", Arial, sans-serif;--font-serif: "Lora", "Playfair Display", Georgia, "Times New Roman", serif;--font-mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;--r-pill: 999px;--r-card: 12px;--r-window: 16px;--r-pixel: 6px;--dur-micro: .12s;--dur-ui: .24s;--dur-hero: .6s;--ease: cubic-bezier(.22, 1, .36, 1);--maxw: 1200px;--gutter: clamp(20px, 4vw, 48px);--header-h: 72px;--rail-stage-h: calc(100vh - var(--header-h));--rail-run: 130vh;--rail-card-w: min(440px, calc((100vh - var(--header-h) - 112px) * 3 / 4))}@media(min-width:1920px){:root{--maxw: 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0}.hero-demo{min-width:0;display:flex;justify-content:flex-end}.hero-chat{width:min(100%,430px);aspect-ratio:5 / 7;box-shadow:inset 0 0 0 1px #fdfaf214,0 36px 84px -38px #211d1699}.hero-chat .chat{--cu: clamp(12.5px, 1vw, 14.5px);--cpad: clamp(14px, 1.25vw, 18px);--cgap: clamp(10px, .9vw, 14px)}.ribbon{background:var(--ink);overflow:hidden;padding-block:18px;border-block:1px solid var(--ink)}.ribbon-track{display:flex;width:max-content;animation:ribbonScroll 28s linear infinite}.ribbon-chunk{display:flex;align-items:center;flex:none}.ribbon-chunk span{font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:#fdfaf2b8;white-space:nowrap;padding-inline:22px}.ribbon-chunk i{font-style:normal;color:var(--vermilion-on-dark);font-size:12px}@keyframes ribbonScroll{to{transform:translate(-50%)}}.steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--border);border:1px solid 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h3{font-size:1.375rem;font-weight:600;letter-spacing:-.01em;margin:22px 0 8px}.card p{font-size:14.5px;line-height:1.55;margin:0}.card .card-link{margin-top:auto;padding-top:20px;font-size:13.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px}.card .card-link svg{width:15px;height:15px;transition:transform var(--dur-micro) var(--ease)}.card .card-link:hover svg{transform:translate(3px)}.card-light{background:var(--paper);border:1px solid var(--border);box-shadow:0 1px 2px #211d160a}.sec-alt .card-light{background:var(--surface-white)}.card-light .card-tag{color:var(--vermilion)}.card-light p{color:var(--muted)}.card-light:hover{box-shadow:0 12px 32px -18px #211d1640}.card-dark{background:var(--ink);color:var(--paper)}.card-dark .card-tag{color:var(--vermilion-on-dark)}.card-dark p{color:#fdfaf29e}.card-dark:hover{box-shadow:0 16px 40px -20px #211d168c}.card-tint{background:var(--vermilion-tint);border:1px solid #F4CDBB;color:var(--ink)}.card-tint 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#211d169e}.chat-frame:before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;background:radial-gradient(118% 68% at 82% -12%,rgba(240,78,30,.17),transparent 60%)}.chat{--cu: clamp(11.5px, .93vw, 13.5px);--cpad: clamp(12px, 1.05vw, 16px);--cgap: clamp(9px, .8vw, 13px);--cav: calc(var(--cu) * 1.95);--cr: calc(var(--cu) * 1.2);position:relative;z-index:1;height:100%;display:flex;flex-direction:column;padding:var(--cpad);color:var(--paper)}.chat-bar{flex:none;display:flex;align-items:center;gap:9px;padding-bottom:calc(var(--cpad) * .7);border-bottom:1px solid rgba(253,250,242,.08)}.chat-ava{flex:none;width:calc(var(--cu) * 2.3);height:calc(var(--cu) * 2.3);border-radius:50%;display:grid;place-items:center;background:#f04e1e29;box-shadow:inset 0 0 0 1px #ff6a3b5c}.chat-ava .cw-mark{width:68%;height:68%}.chat-id{display:flex;flex-direction:column;gap:3px;min-width:0}.chat-id b{font-size:calc(var(--cu) + .5px);font-weight:600;letter-spacing:-.01em;line-height:1}.chat-id i{font-style:normal;font-family:var(--font-mono);font-size:calc(var(--cu) - 3px);line-height:1;color:#fdfaf26b;display:inline-flex;align-items:center;gap:5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-live{flex:none;width:5px;height:5px;border-radius:50%;background:var(--success);box-shadow:0 0 0 2.5px #6d8c3f33}.chat-tag{margin-left:auto;flex:none;font-family:var(--font-mono);font-size:calc(var(--cu) - 3.5px);letter-spacing:.1em;line-height:1;color:var(--vermilion-on-dark);box-shadow:inset 0 0 0 1px #ff6a3b66;border-radius:var(--r-pill);padding:4px 8px}.chat-log{flex:1 1 auto;min-height:0;display:flex;flex-direction:column;justify-content:flex-end;gap:var(--cgap);padding-block:calc(var(--cpad) * .85) calc(var(--cpad) * .7);overflow:hidden;-webkit-mask-image:linear-gradient(to bottom,transparent 0,#000 28px);mask-image:linear-gradient(to bottom,transparent 0,#000 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