:root{--surface-hover:#f3f0e8;--shadow-3:0 12px 40px rgba(15,38,36,0.14);--shadow-glow:0 0 0 1px rgba(14,111,121,0.08),0 8px 32px rgba(14,111,121,0.12);--shadow-glow-warm:0 0 0 1px rgba(185,106,49,0.1),0 8px 28px rgba(185,106,49,0.14);--ease-out:cubic-bezier(0.16,1,0.3,1);--ease-spring:cubic-bezier(0.34,1.56,0.64,1);--t-fast:150ms cubic-bezier(0.4,0,0.2,1);--t-base:250ms cubic-bezier(0.4,0,0.2,1);--t-slow:400ms cubic-bezier(0.16,1,0.3,1);--nav-w:16.5rem;--glass-bg:rgba(255,255,255,0.72);--glass-border:rgba(255,255,255,0.45);--mesh-teal:rgba(14,111,121,0.18);--mesh-copper:rgba(185,106,49,0.12);--mesh-gold:rgba(185,138,46,0.1)}html[data-theme=dark]{--surface-hover:#212b2e;--shadow-3:0 12px 40px rgba(0,0,0,0.45);--shadow-glow:0 0 0 1px rgba(58,139,148,0.15),0 8px 32px 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h4{display:flex;align-items:center;gap:8px}.qc-card--lux h4 i{color:var(--brand-600);font-size:.9rem}.shortcut--lux .ic{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;background:var(--brand-100);color:var(--brand-700);font-size:.85rem;flex-shrink:0}.soon-card i{display:block;font-size:1.35rem;color:var(--brand-600);margin-bottom:6px}.soon-card.is-live i{color:var(--brand-500)}.chat-topbar{background:var(--glass-bg);-webkit-backdrop-filter:blur(14px) saturate(1.2);backdrop-filter:blur(14px) saturate(1.2);border-bottom:1px solid var(--glass-border)}.chat-topbar h3{font-family:var(--font-display);font-weight:700;letter-spacing:-.01em}.model-pill{background:linear-gradient(135deg,var(--surface),var(--surface-2));border-color:color-mix(in srgb,var(--brand-500) 25%,var(--line))}.ai-card{background:linear-gradient(165deg,var(--surface),var(--surface-2));border-radius:16px 16px 4px 16px;box-shadow:var(--shadow-1),inset 0 1px 0 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.shortcut:hover{transform:translateX(3px)}.tier-diamond{background:linear-gradient(120deg,var(--diamond-900),#3b2f57);color:var(--diamond-accent);box-shadow:0 2px 8px rgba(35,28,51,.3)}.tier-gold{background:linear-gradient(135deg,var(--gold-100),color-mix(in srgb,var(--gold-100) 60%,#fff))}.book-card{transition:transform var(--t-base),box-shadow var(--t-base),border-color var(--t-base)}.book-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}.book-cover{background:linear-gradient(160deg,var(--brand-700),var(--brand-400,#3a8b94))}@media (max-width:1099px){.app-nav{box-shadow:var(--shadow-3)}.app-shell-backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:rgba(15,38,36,.45)}}.chat-progress-step.is-active .chat-progress-dot{box-shadow:0 0 0 4px color-mix(in srgb,var(--brand-500) 20%,transparent)}.chat-progress-step.is-done .chat-progress-dot{background:var(--brand-500)}.app-main>*{animation:lux-page-in .45s var(--ease-out) both}@keyframes lux-page-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.plan-col.diamond{background:linear-gradient(165deg,var(--diamond-900) 0,#2e2442 100%);box-shadow:0 8px 32px rgba(35,28,51,.35)}.plan-col.diamond:hover{box-shadow:0 12px 40px rgba(35,28,51,.45);transform:translateY(-4px)}@media (prefers-reduced-motion:reduce){*,:after,:before{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.app-main:after,.app-main:before,.chat-empty-ring,.lp-hero:after,.lp-hero:before{animation:none}}.app-main{position:relative;isolation:isolate}.app-main:after,.app-main:before{content:"";position:fixed;border-radius:50%;pointer-events:none;z-index:0;filter:blur(60px);opacity:.55;animation:lux-orb 18s ease-in-out infinite}.app-main:before{width:420px;height:420px;background:radial-gradient(circle,rgba(14,111,121,.22),transparent 70%);top:-80px;inset-inline-end:10%}.app-main:after{width:320px;height:320px;background:radial-gradient(circle,rgba(185,106,49,.14),transparent 70%);bottom:8%;inset-inline-start:18%;animation-delay:-6s;animation-direction:reverse}.app-main>*{position:relative;z-index:1}.app-nav{--nav-w:17rem;-webkit-border-start:1px solid rgba(58,139,148,.22);border-inline-start:1px solid rgba(58,139,148,.22);box-shadow:inset -1px 0 0 rgba(255,255,255,.05),8px 0 32px rgba(0,0,0,.18)}.app-nav-brand .brand-mark{width:36px;height:36px;animation:lux-brand-glow 3s ease-in-out infinite}@keyframes lux-brand-glow{0%,to{box-shadow:0 2px 8px rgba(14,111,121,.35),inset 0 1px 0 rgba(255,255,255,.2)}50%{box-shadow:0 4px 20px rgba(58,139,148,.55),0 0 0 4px rgba(58,139,148,.12),inset 0 1px 0 rgba(255,255,255,.25)}}.app-nav-link.is-active{background:linear-gradient(90deg,rgba(14,111,121,.28),rgba(255,255,255,.06));box-shadow:inset 0 1px 0 rgba(255,255,255,.08)}.app-nav-link:hover:not(.is-active),html[dir=ltr] .app-nav-link:hover:not(.is-active){transform:none}.app-shell--chat .chat-main{background:transparent}.app-shell--chat .thread{position:relative;background-color:transparent;background-image:radial-gradient(circle at 50% 0,color-mix(in srgb,var(--brand-100) 55%,transparent),transparent 42%),radial-gradient(circle,color-mix(in srgb,var(--brand-500) 7%,transparent) 1px,transparent 1px);background-size:100% 100%,22px 22px;background-position:top,50%;padding:24px clamp(16px,3vw,32px)}.app-shell--chat .chat-topbar{background:color-mix(in srgb,var(--glass-bg) 88%,transparent);-webkit-backdrop-filter:blur(20px) saturate(1.4);backdrop-filter:blur(20px) saturate(1.4);border-bottom:1px solid color-mix(in srgb,var(--brand-500) 12%,var(--line));box-shadow:0 1px 0 rgba(255,255,255,.4)}html[data-theme=dark] .app-shell--chat .chat-topbar{box-shadow:none}.chat-empty--lux{max-width:42rem;padding:clamp(2rem,5vh,3.5rem) 1.5rem}.chat-empty-visual{position:relative;width:120px;height:120px;margin:0 auto 1.75rem}.chat-empty-ring{position:absolute;inset:0;border-radius:50%;border:1px solid color-mix(in srgb,var(--brand-500) 35%,transparent);animation:lux-ring-pulse 3.2s var(--ease-out) infinite}.chat-empty-ring--2{inset:-12px;animation-delay:.6s;opacity:.65}.chat-empty-ring--3{inset:-24px;animation-delay:1.2s;opacity:.35}@keyframes lux-ring-pulse{0%,to{transform:scale(1);opacity:.5}50%{transform:scale(1.06);opacity:1}}.chat-empty-icon{position:absolute;inset:18px;width:auto;height:auto;margin:0;border-radius:22px;font-size:2rem;animation:lux-icon-float 4s ease-in-out infinite}@keyframes lux-icon-float{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}.chat-empty-kicker{margin:0 0 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.dash-stat-value{color:var(--ink)}.dash-stat-sub{display:block;font-size:11.5px;color:var(--ink-muted);margin-top:2px}.qc-card--quota{background:linear-gradient(165deg,var(--surface),color-mix(in srgb,var(--brand-100) 30%,var(--surface)))}.qc-card--quota .quota-bar-fill{background:linear-gradient(90deg,var(--brand-700),var(--brand-400,#3a8b94));box-shadow:0 0 12px rgba(14,111,121,.35)}.soon-card{transition:transform var(--t-base),box-shadow var(--t-base),border-color var(--t-base)}.soon-card.is-live:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}.chat-rail{-webkit-border-end:1px solid color-mix(in srgb,var(--brand-500) 12%,var(--line));border-inline-end:1px solid color-mix(in srgb,var(--brand-500) 12%,var(--line));background:color-mix(in srgb,var(--surface) 78%,transparent);-webkit-backdrop-filter:blur(16px) saturate(1.2);backdrop-filter:blur(16px) saturate(1.2);box-shadow:inset 1px 0 0 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