:root{--bg: #f6f4f0;--bg-surface: #ffffff;--bg-dark: #1a1a1e;--fg: #1a1a1e;--fg-secondary: #5a5856;--fg-tertiary: #8a8680;--fg-inverse: #f6f4f0;--accent: #b45309;--accent-hover: #92400e;--accent-soft: rgba(180, 83, 9, .08);--accent-muted: rgba(180, 83, 9, .15);--border: #d6d3ce;--border-hover: #b8b4ae;--font-display: "Space Mono", monospace;--font-body: "Work Sans", "Noto Sans SC", system-ui, sans-serif;--radius: 3px;--container: 1120px;--sp-1: 4px;--sp-2: 8px;--sp-3: 12px;--sp-4: 16px;--sp-5: 20px;--sp-6: 24px;--sp-8: 32px;--sp-10: 40px;--sp-12: 48px;--sp-16: 64px;--sp-20: 80px;--shadow-sm: 0 1px 3px rgba(26, 26, 30, .06);--shadow-md: 0 3px 12px rgba(26, 26, 30, .08);--shadow-lg: 0 8px 32px rgba(26, 26, 30, .1);--ease: cubic-bezier(.16, 1, .3, 1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);font-size:.9375rem;line-height:1.65;color:var(--fg);background:var(--bg);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}ul{list-style:none}.container{max-width:var(--container);margin:0 auto;padding:0 var(--sp-6)}.skip-nav{position:absolute;top:-100%;left:var(--sp-4);background:var(--accent);color:var(--fg-inverse);padding:var(--sp-2) var(--sp-4);border-radius:var(--radius);font-size:.8125rem;font-weight:600;z-index:200;transition:top .15s}.skip-nav:focus{top:var(--sp-2)}.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}.reveal.revealed{opacity:1;transform:translateY(0)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:0 var(--sp-5);height:42px;font-family:var(--font-body);font-size:.875rem;font-weight:600;border-radius:var(--radius);border:1.5px solid transparent;cursor:pointer;transition:all .18s var(--ease);white-space:nowrap}.btn:hover{transform:translateY(-1px)}.btn:active{transform:translateY(0) scale(.97)}.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover);box-shadow:0 4px 12px #b4530940}.btn-ghost:hover{border-color:var(--fg)}.btn-outline{background:var(--bg-surface);color:var(--fg);border-color:var(--border)}.btn-outline:hover{border-color:var(--accent);color:var(--accent)}.btn-block{width:100%}.btn-lg{height:48px;font-size:1rem;padding:0 var(--sp-8)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.section-head{text-align:center;max-width:520px;margin:0 auto var(--sp-12)}.section-label{font-family:var(--font-display);font-size:.6875rem;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--accent);margin-bottom:var(--sp-3)}.section-title{font-size:1.75rem;font-weight:700;letter-spacing:-.02em;line-height:1.2;margin-bottom:var(--sp-3)}.section-desc{font-size:.9375rem;color:var(--fg-secondary);line-height:1.6}.nav{position:fixed;top:0;left:0;right:0;z-index:100;height:56px;background:#f6f4f0cc;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:background .2s,box-shadow .2s}.nav.scrolled{background:#f6f4f0f5;box-shadow:var(--shadow-sm)}.nav-brand{display:flex;align-items:center;gap:var(--sp-2)}.nav-links{display:flex;align-items:center;gap:var(--sp-6)}.nav-links a{font-size:.875rem;font-weight:500;color:var(--fg-secondary);transition:color .12s}.nav-links a:hover{color:var(--fg)}.nav-cta{background:var(--accent);color:var(--fg-inverse)!important;padding:0 var(--sp-4);height:34px;border-radius:var(--radius);display:inline-flex;align-items:center;font-weight:600;transition:background .15s}.nav-cta:hover{background:var(--accent-hover)!important;color:var(--fg-inverse)!important}.nav-burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}.nav-burger span{display:block;width:22px;height:2px;background:var(--fg);border-radius:1px;transition:transform .2s,opacity .2s}.nav-burger[aria-expanded=true] span:nth-child(1){transform:translateY(7px) rotate(45deg)}.nav-burger[aria-expanded=true] span:nth-child(2){opacity:0}.nav-burger[aria-expanded=true] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:var(--sp-12);align-items:center}.hero-visual{position:relative;min-width:0}.hero-visual .chat-mock{width:100%;max-width:480px;margin-left:auto}.hero-title{font-family:var(--font-body);font-size:clamp(2.25rem,5vw,3.5rem);font-weight:700;letter-spacing:-.04em;line-height:1.08;margin-bottom:var(--sp-5)}.hero-cursor{display:inline-block;width:3px;height:.85em;background:var(--accent);margin-left:4px;vertical-align:baseline;animation:cursorBlink 1s steps(1) infinite}@keyframes cursorBlink{0%,50%{opacity:1}51%,to{opacity:0}}.hero-desc{font-size:1.0625rem;color:var(--fg-secondary);line-height:1.7;margin-bottom:var(--sp-8);max-width:480px}.hero-desc strong{color:var(--fg);font-weight:600}.hero-actions{display:flex;gap:var(--sp-3);margin-bottom:var(--sp-8)}.hero-stat{display:inline-flex;align-items:baseline;gap:var(--sp-3);padding:var(--sp-3) var(--sp-5);background:var(--accent-soft);border-left:3px solid var(--accent);border-radius:0 var(--radius) var(--radius) 0}.hero-stat-val{font-family:var(--font-display);font-size:2rem;font-weight:700;color:var(--accent);letter-spacing:-.02em;line-height:1}.hero-stat-text{font-size:.8125rem;color:var(--fg-secondary);line-height:1.4}.chat-mock{background:var(--bg-surface);border:1.5px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);overflow:hidden;height:480px;display:flex;flex-direction:column}.chat-header{display:flex;align-items:center;justify-content:space-between;padding:var(--sp-3) var(--sp-4);border-bottom:1.5px solid 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var(--sp-2);border-radius:2px}.chat-avatar{flex-shrink:0;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:700}.chat-avatar-agent{width:28px;height:28px;background:var(--accent);color:var(--fg-inverse);font-size:.6875rem}.chat-avatar-sm{width:22px;height:22px;font-size:.5625rem}.chat-body{padding:var(--sp-4);display:flex;flex-direction:column;gap:var(--sp-3);flex:1;overflow-y:auto}.msg{display:flex;gap:var(--sp-2)}.msg-user{justify-content:flex-end}.msg-agent{justify-content:flex-start}.msg-avatar{flex-shrink:0;align-self:flex-end}.msg-content{display:flex;flex-direction:column;max-width:82%}.msg-meta{display:flex;align-items:baseline;gap:var(--sp-2);margin-bottom:2px;padding:0 2px}.msg-sender{font-size:.5625rem;font-weight:600;color:var(--fg-tertiary)}.msg-time{font-size:.5rem;color:var(--fg-tertiary);opacity:.7}.msg-user .msg-meta{justify-content:flex-end}.chat-body .msg{animation:msgAppear .4s var(--ease) both}@keyframes msgAppear{0%{opacity:0;transform:translateY(8px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.msg-bubble{max-width:100%;padding:var(--sp-3) var(--sp-4);font-size:.8125rem;line-height:1.55;border-radius:12px}.msg-user .msg-bubble{background:var(--accent);color:var(--fg-inverse);border-bottom-right-radius:4px}.msg-agent .msg-bubble{background:var(--bg);color:var(--fg);border-bottom-left-radius:4px}.msg-agent .msg-bubble strong{color:var(--accent);font-weight:700}.msg-status{display:flex;align-items:center;gap:3px;font-size:.5rem;color:var(--accent);margin-top:2px;padding:0 2px;justify-content:flex-end}.chat-footer{display:flex;align-items:center;gap:var(--sp-2);padding:var(--sp-2) var(--sp-4);border-top:1.5px solid var(--border);font-size:.75rem;flex-shrink:0}.chat-footer-tag{font-family:var(--font-display);background:var(--accent-soft);color:var(--accent);padding:2px var(--sp-2);border-radius:2px;font-weight:700;font-size:.625rem;letter-spacing:.04em}.chat-footer-text{color:var(--fg-tertiary)}.how{padding:var(--sp-20) 0;background:var(--bg-surface)}.how-roles{display:flex;align-items:center;gap:var(--sp-6)}.role-card{flex:1;background:var(--bg);border:1.5px solid var(--border);border-radius:var(--radius);padding:var(--sp-8);transition:border-color .15s,box-shadow .15s}.role-card:hover{border-color:var(--border-hover);box-shadow:var(--shadow-md)}.role-tag{font-family:var(--font-display);font-size:.625rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--fg-secondary);background:var(--bg);padding:var(--sp-1) var(--sp-2);border-radius:2px;display:inline-block;margin-bottom:var(--sp-4)}.role-tag--accent{color:var(--accent);background:var(--accent-soft)}.role-title{font-size:1.25rem;font-weight:700;margin-bottom:var(--sp-5)}.role-list{display:flex;flex-direction:column;gap:var(--sp-3)}.role-list li{font-size:.875rem;color:var(--fg-secondary);padding-left:var(--sp-4);position:relative;line-height:1.5}.role-list li:before{content:"";position:absolute;left:0;top:9px;width:5px;height:1.5px;background:var(--accent)}.role-vs{display:flex;flex-direction:column;align-items:center;gap:var(--sp-2);flex-shrink:0}.role-vs-line{width:1px;height:28px;background:var(--border)}.role-vs-text{font-family:var(--font-display);font-size:.625rem;font-weight:700;color:var(--fg-tertiary);text-transform:uppercase;letter-spacing:.1em}.how-more{text-align:center;margin-top:var(--sp-10)}.flow{padding:var(--sp-20) 0;background:var(--bg)}.flow-steps{display:flex;align-items:flex-start;gap:0}.flow-step{flex:1;display:flex;gap:var(--sp-4)}.step-num{font-family:var(--font-display);flex-shrink:0;min-width:36px;height:36px;border:1.5px solid var(--accent);border-radius:50%;color:var(--accent);font-size:.75rem;font-weight:700;display:flex;align-items:center;justify-content:center}.step-title{font-size:1rem;font-weight:600;margin-bottom:var(--sp-2)}.step-desc{font-size:.875rem;color:var(--fg-secondary);line-height:1.6}.flow-arrow{flex-shrink:0;width:40px;height:36px;display:flex;align-items:center;justify-content:center;color:var(--border-hover)}.features{padding:var(--sp-20) 0;background:var(--bg-surface)}.features-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--sp-6)}.feature-card{background:var(--bg);border:1.5px solid var(--border);border-radius:var(--radius);padding:var(--sp-8);transition:border-color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease);display:flex;flex-direction:column}.feature-card:hover{border-color:var(--accent-muted);box-shadow:var(--shadow-md);transform:translateY(-2px)}.feature-card--hero{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent),0 0 0 4px 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41px);pointer-events:none}@media(max-width:900px){.hero-inner{grid-template-columns:1fr;gap:var(--sp-10)}.hero-visual{order:-1}.hero-title{font-size:2rem}.how-roles{flex-direction:column;gap:var(--sp-4)}.role-vs{flex-direction:row}.role-vs-line{width:28px;height:1px}.features-grid{grid-template-columns:1fr}.flow-steps{flex-direction:column;gap:var(--sp-6)}.flow-arrow{transform:rotate(90deg)}.pricing-grid{grid-template-columns:1fr;max-width:400px;margin:0 auto}.compare-table{max-width:100%}.footer-inner{flex-direction:column;gap:var(--sp-4);text-align:center}.footer-links{justify-content:center}.nav-burger{display:flex}.nav-links{position:fixed;top:56px;left:0;right:0;background:#f6f4f0fa;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);flex-direction:column;align-items:center;padding:var(--sp-6) 0;gap:var(--sp-4);box-shadow:var(--shadow-md);transform:translateY(-100%);opacity:0;transition:transform .2s var(--ease),opacity 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