:root{--blue: #155dfc;--purple: #9810fa;--gradient: linear-gradient(to right, var(--blue), var(--purple));--soft-gradient: linear-gradient(135deg, #155dfc14, #9810fa14);--blue-soft: #155dfc14;--purple-soft: #9810fa14;--green: #3DA81C;--bg: #F6F7FB;--surface: #ffffff;--border: #E9EAF0;--text: #111827;--text-muted: #6B7280;--text-faint: #9CA3AF;--shadow-sm: 0 1px 2px #1018280d, 0 1px 3px #1018281a;--shadow-md: 0 12px 24px -8px #10182826;--shadow-lg: 0 24px 60px -12px #00000040;--focus-ring: 0 0 0 4px #155dfc26;--radius-lg: 20px;--radius-xl: 24px;--container: 1160px}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:80px}body{font-family:Inter,system-ui,-apple-system,sans-serif;color:var(--text);background:var(--surface);-webkit-font-smoothing:antialiased;line-height:1.5}img{display:block;max-width:100%}a{color:inherit;text-decoration:none}button{font:inherit}:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:8px}.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}.section{padding:96px 0}.section--muted{background:var(--bg)}.section__head{max-width:640px;margin:0 auto 56px;text-align:center}.section__head h2{margin-top:10px;font-size:clamp(28px,3.6vw,42px);line-height:1.15;font-weight:800;letter-spacing:-.02em}.section__head p{margin-top:14px;font-size:18px;color:var(--text-muted)}.eyebrow{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--purple);text-transform:uppercase;letter-spacing:.06em}.gradient-text{background:var(--gradient);-webkit-background-clip:text;background-clip:text;color:transparent}.icon-tile{flex-shrink:0;width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:13px;background:var(--blue-soft);color:var(--blue)}.icon-tile--gradient{background:var(--gradient);color:#fff}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:12px;border:1px solid transparent;font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;transition:transform .2s,box-shadow .2s,border-color .2s,color .2s,background .2s}.btn:hover{transform:translateY(-1px)}.btn--primary{background:var(--gradient);color:#fff;box-shadow:0 6px 16px -6px #155dfc80}.btn--primary:hover{box-shadow:0 10px 22px -8px #155dfc99}.btn--secondary{background:var(--surface);color:var(--text);border-color:var(--border)}.btn--secondary:hover{border-color:var(--blue);color:var(--blue)}.btn--ghost{color:var(--text-muted)}.btn--ghost:hover{color:var(--text);transform:none}.btn--white{background:#fff;color:var(--blue)}.btn--lg{padding:14px 26px;font-size:16px;border-radius:14px}.header{position:sticky;top:0;z-index:50;background:#ffffffd9;backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s}.header--scrolled{border-bottom-color:var(--border);box-shadow:0 1px 8px #1018280a}.header__inner{height:72px;display:flex;align-items:center;gap:32px}.logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;letter-spacing:-.01em}.logo .icon-tile{width:36px;height:36px;border-radius:11px}.header__nav{display:flex;gap:4px}.header__nav a{padding:8px 12px;border-radius:10px;font-size:15px;font-weight:500;color:var(--text-muted);transition:color 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var(--border)}.mock__avatar{width:42px;height:42px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:var(--soft-gradient);color:var(--purple);font-weight:700}.mock__name{font-weight:700;font-size:15px}.mock__status{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-muted)}.mock__status i{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px #3da81c26}.mock__notice{padding:6px;text-align:center;font-size:11px;color:var(--text-muted);background:var(--soft-gradient)}.mock__body{display:flex;flex-direction:column;gap:10px;padding:20px 18px 40px}.bubble{max-width:82%;padding:10px 14px;font-size:14px;line-height:1.5;border-radius:18px 18px 18px 6px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm);opacity:0;animation:bubbleIn .5s ease-out forwards}.bubble--user{align-self:flex-end;border:none;border-radius:18px 18px 6px;background:var(--gradient);color:#fff;box-shadow:0 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