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0}.login-back{position:fixed;top:20px;right:24px;z-index:var(--z-sticky);font-size:var(--fs-sm);font-weight:500;color:var(--text-2);cursor:pointer;padding:6px 12px;border-radius:var(--r-pill);background:var(--bg-elev);border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease)}.login-back:hover{color:var(--primary);border-color:var(--primary)}.fade-in-up{animation:fadeInUp .4s var(--ease-out) both}@keyframes fadeInUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 920px){.sidebar{width:var(--sidebar-w-collapsed)}.sidebar__group-label,.nav-item>span:not(.nav-item__icon),.sidebar__brand>span:last-child{display:none}.nav-item{justify-content:center}}.preview-overlay{flex-direction:column;align-items:center;justify-content:center;gap:var(--sp-3);padding:var(--sp-5)}.preview-overlay__stage{position:relative;background:#0f172a;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-xl);max-width:100%}.preview-overlay__stage iframe,.preview-overlay__stage img,.preview-overlay__stage video{display:block;width:100%;height:100%;border:none;background:#0f172a}.preview-overlay__media{background:var(--bg-elev)}.preview-overlay__media img,.preview-overlay__media video{background:var(--bg-elev);object-fit:contain}.preview-overlay__anim{position:relative;width:100%;height:100%;overflow:hidden}.preview-overlay__audio{display:flex;flex-direction:column;align-items:center;gap:var(--sp-4);padding:48px;color:var(--text)}.preview-overlay__nav{position:absolute;top:calc(50% - 22px);width:44px;height:44px;font-size:22px;z-index:var(--z-modal)}.preview-overlay__prev{left:max(16px,3vw)}.preview-overlay__next{right:max(16px,3vw)}.preview-overlay__close{position:fixed;top:16px;right:16px;width:36px;height:36px;font-size:16px;z-index:var(--z-modal)}.preview-overlay__caption{display:flex;align-items:center;gap:var(--sp-2);font-size:14px;color:var(--text);max-width:min(92vw,1080px)}.preview-overlay__title{font-weight:600}@media (prefers-color-scheme: dark){.preview-overlay__nav,.preview-overlay__close{background:var(--panel);color:var(--text)}}.landing{min-height:100%;background:var(--bg);color:var(--text)}.landing-nav{position:sticky;top:0;z-index:var(--z-sticky);display:flex;align-items:center;gap:var(--sp-5);padding:0 var(--sp-6);height:var(--topbar-h);background:#f8f7fcd1;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}@media (prefers-color-scheme: dark){.landing-nav{background:#0a0e1fc7}}.landing-brand{display:flex;align-items:center;gap:var(--sp-2);font-size:var(--fs-lg);font-weight:700;letter-spacing:var(--ls-tight)}.landing-brand__mark{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--r-sm);background:var(--grad-cta);color:#fff;font-weight:700}.landing-nav__link{color:var(--text-2);font-size:var(--fs-sm);font-weight:500;cursor:pointer;padding:6px 14px;border-radius:var(--r-pill);background:var(--surface-sunken);border:1px solid transparent;transition:color var(--t-fast) var(--ease),background var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease)}.landing-nav__link:hover{color:var(--primary);background:var(--primary-soft);border-color:var(--indigo-200)}.landing-hero{position:relative;min-height:calc(100vh - var(--topbar-h));display:flex;align-items:center;padding:var(--sp-12) 0;background:var(--grad-hero);border-bottom:1px solid var(--border);overflow:hidden}.landing-hero__inner{display:grid;grid-template-columns:1.2fr 1fr;gap:var(--sp-10);align-items:center}.landing-hero__title{font-size:var(--fs-5xl);font-weight:800;letter-spacing:var(--ls-tight);line-height:1.15;margin:var(--sp-4) 0 var(--sp-3)}.landing-hero__sub{font-size:var(--fs-md);color:var(--text-2);max-width:540px;line-height:var(--lh-relaxed)}.landing-hero__cta{display:flex;gap:var(--sp-3);margin:var(--sp-6) 0 var(--sp-5);flex-wrap:wrap}.landing-hero__pills{display:flex;gap:var(--sp-2);flex-wrap:wrap}.landing-hero__aside{display:flex;justify-content:center}.landing-hero__art-wrap{position:relative;width:100%;max-width:460px}.landing-hero__art-wrap:before{content:"";position:absolute;top:-10%;right:-6%;bottom:-6%;left:-6%;background:radial-gradient(circle at 62% 38%,rgba(79,70,229,.2),transparent 62%);filter:blur(10px);z-index:0}.landing-hero__art{position:relative;z-index:1;width:100%;height:420px;object-fit:cover;border-radius:var(--r-2xl);box-shadow:var(--shadow-xl);transform:rotate(-1.5deg);transition:transform var(--t-slow) var(--ease-out);display:block}.landing-hero__art:hover{transform:rotate(0) scale(1.01)}@media (prefers-color-scheme: dark){.landing-hero__art-wrap:before{background:radial-gradient(circle at 62% 38%,rgba(129,140,248,.28),transparent 62%)}}.landing-hero__eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:var(--fs-sm);font-weight:600;padding:6px 14px;border-radius:var(--r-pill);background:var(--accent-soft);color:var(--accent-text);border:1px solid rgba(245,158,11,.22)}.landing-hero__eyebrow-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px #f59e0b2e}.landing-hero__intro{width:100%;max-width:460px;min-height:420px;background:var(--panel);border:1px solid var(--border);border-radius:var(--r-2xl);box-shadow:var(--shadow-xl);padding:var(--sp-8);display:flex;flex-direction:column;gap:var(--sp-4);position:relative;overflow:hidden}.landing-hero__intro:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-cta)}.landing-hero__intro-head{display:flex;align-items:center;gap:var(--sp-3)}.landing-hero__intro .icon-badge{width:48px;height:48px;flex-shrink:0}.landing-hero__intro-title{font-size:var(--fs-xl);font-weight:700;letter-spacing:var(--ls-tight)}.landing-hero__intro-desc{font-size:var(--fs-sm);color:var(--text-2);line-height:var(--lh-relaxed)}.landing-hero__intro-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:var(--sp-2)}.landing-hero__intro-list li{font-size:var(--fs-sm);color:var(--text);display:flex;align-items:center;gap:8px}.landing-hero__intro-list li:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);flex-shrink:0}.landing-hero__intro .btn-primary{margin-top:auto;align-self:flex-start}.showcase-hero{background:var(--grad-hero);padding:var(--sp-16) 0 var(--sp-12);border-bottom:1px solid var(--border)}.showcase-hero__title{font-size:var(--fs-4xl);font-weight:800;letter-spacing:var(--ls-tight);margin:var(--sp-3) 0 var(--sp-2)}.showcase-hero__sub{color:var(--text-2);max-width:620px;line-height:var(--lh-relaxed)}.showcase-body{padding:var(--sp-10) var(--sp-6) var(--sp-16)}.landing-cap .icon-badge{background:var(--grad-cta);color:#fff;width:48px;height:48px}.landing-cap .icon-badge--amber{background:var(--grad-amber)}.empty-state__art{width:150px;max-width:50vw;margin-bottom:var(--sp-1);opacity:.96}.landing-section{padding:var(--sp-16) 0}.landing-section--alt{background:var(--panel-2);border-block:1px solid var(--border)}.landing-grid{margin-top:var(--sp-6)}.landing-grid+.landing-grid{margin-top:var(--sp-8)}.landing-work{padding:0;overflow:hidden;cursor:pointer;display:flex;flex-direction:column}.landing-work__body{padding:var(--sp-4);display:flex;flex-direction:column;gap:var(--sp-2)}.landing-work__title{font-size:var(--fs-md);font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.landing-work__meta{display:flex;align-items:center;gap:var(--sp-2);font-size:var(--fs-xs)}.landing-work__desc{font-size:var(--fs-sm);color:var(--muted);line-height:var(--lh-normal);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.sc-cover{position:relative;width:100%;aspect-ratio:4 / 3;background:var(--surface-sunken);overflow:hidden;border-bottom:1px solid var(--border)}.sc-cover--img{display:flex;align-items:center;justify-content:center}.sc-cover--img img,.sc-cover--img video{width:100%;height:100%;object-fit:cover}.sc-cover--audio{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--indigo-100),var(--accent-soft))}@media (prefers-color-scheme: dark){.sc-cover--audio{background:linear-gradient(135deg,#6366f133,#fbbf2424)}}.sc-cover__audio-icon{font-size:40px}.sc-cover iframe{display:block;pointer-events:none}.landing-caps{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:var(--sp-5);margin-top:var(--sp-6)}.landing-cap{display:flex;flex-direction:column;gap:var(--sp-3)}.landing-cap__title{font-size:var(--fs-lg);font-weight:600}.landing-cap__desc{font-size:var(--fs-sm);color:var(--muted);line-height:var(--lh-relaxed)}.landing-cta-band{background:var(--grad-brand);color:#fff;padding:var(--sp-12) 0}.landing-cta-band__inner{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-6);flex-wrap:wrap}.landing-cta-band__title{font-size:var(--fs-2xl);font-weight:700;letter-spacing:var(--ls-tight)}.landing-cta-band__sub{margin-top:var(--sp-2);opacity:.9}.landing-cta-band .btn-primary{background:var(--bg-elev);color:var(--primary);border-color:#fff}.landing-cta-band .btn-primary:hover{background:var(--indigo-50);border-color:var(--indigo-50)}.landing-footer{padding:var(--sp-8) 0;border-top:1px solid var(--border);background:var(--panel)}.landing-footer__inner{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4)}.landing-preview{flex-direction:column;gap:var(--sp-3)}.landing-preview__stage{width:min(90vw,1100px);max-height:80vh;background:var(--slate-900);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-xl)}.landing-preview__stage iframe{width:100%;height:100%;border:none}.landing-preview__media{display:flex;flex-direction:column;align-items:center;gap:var(--sp-4);width:min(90vw,1000px);max-height:86vh;background:var(--panel);border-radius:var(--r-lg);padding:var(--sp-6);box-shadow:var(--shadow-xl)}.landing-preview__media img,.landing-preview__media video,.landing-preview__media iframe{max-width:100%;max-height:70vh;border-radius:var(--r-md);border:none}.landing-preview__media iframe{width:100%;height:60vh}.landing-preview__audio{display:flex;flex-direction:column;align-items:center;gap:var(--sp-4)}.landing-preview__caption{display:flex;align-items:center;gap:var(--sp-3);font-size:var(--fs-sm);justify-content:center}.landing-preview__title{font-weight:600;color:var(--text)}.landing-preview__nav{position:fixed;top:50%;transform:translateY(-50%);background:#ffffffe6;color:var(--text);border:1px solid var(--border);font-size:22px;z-index:var(--z-modal)}.landing-preview__prev{left:var(--sp-4)}.landing-preview__next{right:var(--sp-4)}.landing-preview__close{position:fixed;top:var(--sp-4);right:var(--sp-4);font-size:16px;z-index:var(--z-modal)}@media (prefers-color-scheme: dark){.landing-preview__nav,.landing-preview__close{background:var(--panel);color:var(--text)}}.icon-badge--lg{width:64px;height:64px;font-size:30px;border-radius:var(--r-lg)}@media (max-width: 880px){.landing-hero__inner{grid-template-columns:1fr}.landing-hero__aside{display:none}.landing-hero__title{font-size:var(--fs-4xl)}.landing-nav__link{display:none}}.dash-hero{margin-bottom:var(--sp-8)}.dash-hero__title{font-size:var(--fs-2xl);font-weight:700;letter-spacing:var(--ls-tight)}.dash-hero__sub{color:var(--muted);margin-top:var(--sp-2)}.dash-actions{margin-bottom:var(--sp-10)}.dash-action{display:flex;flex-direction:column;gap:var(--sp-2);text-align:left;cursor:pointer;align-items:flex-start}.dash-action .icon-badge{background:var(--grad-cta);color:#fff;width:48px;height:48px}.dash-action__title{font-size:var(--fs-md);font-weight:600}.dash-action__desc{font-size:var(--fs-sm);color:var(--muted);flex:1;line-height:var(--lh-normal)}.dash-action__go{font-size:var(--fs-sm);color:var(--primary);font-weight:600}.dash-recent-head{margin-top:var(--sp-8)}.dash-recent{display:flex;flex-direction:column;gap:var(--sp-1);cursor:pointer}.dash-recent__icon{font-size:28px}.dash-recent__name{font-size:var(--fs-md);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}.dash-recent__go{align-self:flex-start;margin-top:var(--sp-2)}.explore-tabs{display:flex;gap:var(--sp-2);flex-wrap:wrap;margin-bottom:var(--sp-6)}.landing-work__action{align-self:flex-start;margin-top:var(--sp-2)}.login-wrap{height:100%;display:flex;align-items:center;justify-content:center;background:var(--bg);position:relative;overflow:hidden}.login-wrap:before,.login-wrap:after{content:"";position:absolute;border-radius:50%;filter:blur(80px);opacity:.35;pointer-events:none}.login-wrap:before{width:480px;height:480px;background:var(--indigo-200);top:-120px;left:-120px}.login-wrap:after{width:520px;height:520px;background:var(--indigo-300);bottom:-160px;right:-160px}.login-card{position:relative;width:380px;background:var(--bg-elev);border-radius:var(--radius-lg);padding:32px 32px 24px;box-shadow:var(--shadow-card);animation:loginFadeIn .4s var(--ease-spring) both}@keyframes loginFadeIn{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.login-card .brand-line{font-size:28px;letter-spacing:.5px;margin:0 0 6px}.login-card .subtitle{color:var(--text-2);margin-bottom:24px;font-size:13px}.login-card .form-row{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.login-card label{font-size:12px;color:var(--text-2);padding-left:2px}.login-card input{background:#f5f5f5;border-radius:var(--radius-input);padding:12px 16px}.login-card .err{color:var(--error);font-size:12px;min-height:16px;margin-top:4px;margin-bottom:6px}.login-card .submit{width:100%;border-radius:var(--radius-btn);padding:12px 20px;margin-top:6px;font-size:14px}.login-card .switch-line{text-align:center;margin-top:16px;font-size:13px;color:var(--text-2)}.login-card .switch-line a{color:var(--primary);cursor:pointer;margin-left:4px;text-decoration:none}.login-card .switch-line a:hover{text-decoration:underline}.login-card .switch-line a:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:2px}.projects-wrap{height:100%;display:flex;flex-direction:column;background:var(--bg);overflow-y:auto}.projects-topbar{position:sticky;top:0;z-index:100;display:flex;align-items:center;gap:12px;padding:12px 20px;border-bottom:1px solid var(--border);background:var(--bg-elev);box-shadow:0 1px 6px #0000000a}.projects-topbar .brand{font-size:18px}.projects-topbar .spacer{flex:1}.projects-topbar .user{color:var(--text-2);font-size:13px}.home-tabs{display:flex;align-items:center;gap:2px;margin-left:16px}.home-tab{background:transparent;border:none;padding:6px 14px;font-size:14px;color:var(--text-2);cursor:pointer;border-radius:var(--radius-btn);transition:all var(--t-fast) var(--ease)}.home-tab:not(.active):hover{color:#222;background:var(--panel-2)}.home-tab.active{color:var(--primary);background:var(--tag-bg);font-weight:600}.projects-body{flex:1;padding:32px 48px 48px;max-width:1280px;width:100%;margin:0 auto}.projects-header{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:20px;gap:16px}.projects-title{margin:0 0 6px;font-size:24px;font-weight:600}.projects-sub{color:var(--text-2);font-size:13px}.new-project-btn{border-radius:var(--radius-btn);padding:10px 18px;font-size:14px}.projects-err{color:var(--error);font-size:13px;background:var(--tag-bg);border:1px solid rgba(79,70,229,.2);border-radius:var(--radius-md);padding:8px 12px;margin-bottom:14px}.new-project-form{display:flex;gap:8px;margin-bottom:20px;background:var(--bg-elev);padding:14px;border-radius:var(--radius-md);box-shadow:var(--shadow-card)}.new-project-form input{flex:1;background:#f5f5f5;border-radius:var(--radius-input);padding:10px 16px}.projects-loading{color:var(--text-2);padding:40px 0;text-align:center}.projects-empty{text-align:center;padding:80px 20px;background:var(--bg-elev);border-radius:var(--radius-lg);box-shadow:var(--shadow-card)}.projects-empty .empty-art{font-size:48px;margin-bottom:14px}.projects-empty .empty-title{font-size:18px;font-weight:600;margin-bottom:6px}.projects-empty .empty-sub{color:var(--text-2);font-size:13px;margin-bottom:24px}.projects-empty button.big{padding:12px 28px;font-size:15px;border-radius:var(--radius-btn)}.projects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.project-card{background:var(--bg-elev);border-radius:var(--radius-lg);padding:16px 20px;display:flex;flex-direction:column;gap:12px;box-shadow:var(--shadow-card);transition:transform var(--t-normal) var(--ease-spring),box-shadow var(--t-normal) var(--ease-spring);animation:fadeInUp .4s var(--ease-spring) both}@keyframes fadeInUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.project-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover)}.project-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:8px}.project-name{font-size:16px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}.icon-btn{width:28px;height:28px;border-radius:999px;padding:0;font-size:16px;line-height:1;background:transparent;border:1px solid var(--border);color:var(--text-2)}.icon-btn:hover{background:var(--panel-2)}.icon-btn.danger:hover{color:var(--error);border-color:var(--error)}.project-meta{font-size:12px;color:var(--text-2);display:flex;flex-direction:column;gap:3px}.project-actions{display:flex;gap:8px}.project-actions button.primary{flex:1;border-radius:var(--radius-btn);padding:8px 20px}.pagination{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:24px;padding-top:16px}.pagination-btn{padding:6px 16px;border:1px solid var(--border);border-radius:var(--radius-btn);background:var(--bg-elev);color:var(--text-2);font-size:13px;cursor:pointer;transition:all .15s var(--ease)}.pagination-btn:hover:not(:disabled){color:var(--primary);border-color:var(--primary)}.pagination-btn:disabled{opacity:.4;cursor:not-allowed}.pagination-info{font-size:13px;color:var(--text-2)}.pagination-info strong{color:var(--primary)}.ws-root{height:100%;display:grid;grid-template-rows:56px 1fr;background:var(--bg);overflow:hidden}.ws-topbar{display:flex;align-items:center;padding:0 20px;border-bottom:1px solid var(--border);background:var(--bg-elev);box-shadow:0 1px 6px #0000000a;gap:14px}.ws-topbar .brand{font-weight:700;font-size:18px;letter-spacing:.5px;display:flex;align-items:center;gap:8px}.ws-topbar .brand .dot{width:22px;height:22px;border-radius:6px;background:var(--grad-cta)}.ws-topbar .spacer{flex:1}.ws-topbar .user{color:var(--text-2);font-size:13px}.ws-topbar button{border-radius:var(--radius-pill);padding:6px 14px;font-size:13px}.ws-topbar .back-btn{background:transparent;border:1px solid var(--border);color:var(--text-2);padding:6px 12px}.ws-topbar .back-btn:hover{background:var(--panel-2);color:var(--text)}.ws-topbar .ws-project-name{font-size:14px;color:var(--text-2);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:320px;cursor:pointer;padding:2px 4px;border-radius:var(--radius-sm);transition:background .15s}.ws-topbar .ws-project-name:hover{background:var(--panel-2);color:var(--text)}.ws-topbar .ws-project-name-input{font-size:14px;font-weight:500;color:var(--text);background:var(--panel-2);border:1px solid var(--primary, var(--primary));border-radius:var(--radius-sm);padding:2px 4px;max-width:240px;outline:none}.ws-cols{display:grid;grid-template-columns:28% 1fr;height:100%;min-height:0;gap:12px;padding:14px}.ws-col{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--bg-elev);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-card)}.ws-tabs-header{padding-left:8px;padding-right:12px}.ws-tabs-header a{text-decoration:none;display:inline-flex}.ws-tabs{display:flex;align-items:center;gap:4px;height:100%}.ws-tab{position:relative;height:30px;padding:0 14px;border:none;background:transparent;border-radius:var(--radius-pill);font-size:13px;color:var(--text-2);cursor:pointer;font-weight:500;display:inline-flex;align-items:center;gap:6px;transition:background var(--t-normal) var(--ease),color var(--t-normal) 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var(--border);border-radius:var(--radius-input);font-size:14px;background:var(--bg);color:var(--text);transition:all var(--t-fast) var(--ease)}.config-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #4f46e51a}.config-effective{font-size:12px;color:var(--muted);white-space:nowrap}.config-default-hint{font-size:12px;color:var(--muted)}.switch-toggle-row{display:flex;align-items:center;gap:8px;padding:8px 12px;border:1px solid var(--border);border-radius:var(--r-md, 6px);background:var(--bg);cursor:pointer;font-size:13px;color:var(--text);transition:border-color var(--t-fast) var(--ease),background var(--t-fast) var(--ease)}.switch-toggle-row:hover{border-color:var(--primary);background:var(--tag-bg)}.switch-toggle-row input[type=checkbox]{width:auto;margin:0;accent-color:var(--primary);cursor:pointer}.task-selector{display:flex;gap:8px;padding:8px 12px 4px}.task-btn{display:inline-flex;align-items:center;gap:4px;padding:6px 14px;border-radius:var(--radius-pill);border:1px solid var(--primary);background:var(--tag-bg);color:var(--primary);font-size:13px;cursor:pointer;transition:all var(--t-fast) var(--ease);white-space:nowrap}.task-btn:not(.active):hover{background:#4f46e526}.task-btn.active{background:var(--grad-cta);color:#fff;border-color:transparent;box-shadow:0 2px 8px #4f46e54d}.task-btn-icon{font-size:14px}.task-btn-label{font-weight:500}.task-btn.locked{opacity:.5;cursor:not-allowed}.task-locked-hint{font-size:12px;color:#888;padding:4px 0}.task-hint{color:var(--primary);font-size:12px;padding:4px 0;animation:fadeIn .3s ease-out}.chat-input-area{border-top:1px solid #eee;background:var(--bg-elev)}.chat-model-picker{display:flex;align-items:center;gap:6px;margin-left:auto;flex-shrink:0}.chat-model-label{font-size:12px;line-height:28px;color:var(--text-2, #666);white-space:nowrap}.chat-model-select{height:28px;line-height:26px;padding:0 8px;box-sizing:border-box;width:auto;max-width:150px;font-size:12px;border:1px solid var(--border, #ddd);border-radius:var(--radius-pill);background:var(--bg, #fff);color:var(--text, #222);cursor:pointer}.chat-model-select:focus{outline:none;border-color:var(--primary, #4f46e5)}.confirm-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0006;display:flex;justify-content:center;align-items:center;z-index:1000;animation:fadeIn .2s ease-out}.confirm-card{background:var(--bg-elev);border-radius:var(--radius-lg);padding:28px 32px;max-width:480px;width:90%;box-shadow:var(--shadow-card-hover)}.confirm-title{font-size:20px;font-weight:700;color:#2c3e50;margin-bottom:16px}.confirm-topic{font-size:16px;color:#7f8c8d;margin-bottom:20px}.confirm-row{margin-bottom:18px}.confirm-label{font-size:14px;font-weight:600;color:#34495e;margin-bottom:8px;display:block}.confirm-radio-group{display:flex;gap:8px}.confirm-radio{padding:8px 16px;border-radius:var(--radius-btn);border:1px solid #ddd;background:#f5f5f5;color:#555;font-size:14px;cursor:pointer;transition:all var(--t-fast) var(--ease)}.confirm-radio:not(.active):hover{border-color:var(--primary);color:var(--primary)}.confirm-radio.active{background:var(--grad-cta);color:#fff;border-color:transparent}.confirm-radio-desc{display:block;font-size:12px;opacity:.7;margin-top:2px}.confirm-radio.active .confirm-radio-desc{opacity:.85}.confirm-pages-group{display:flex;align-items:center;gap:8px}.confirm-pages-stepper{width:32px;height:32px;border-radius:var(--radius-sm);border:1px solid #ddd;background:#f5f5f5;color:#555;font-size:16px;cursor:pointer;transition:all var(--t-fast) var(--ease);display:flex;align-items:center;justify-content:center}.confirm-pages-stepper:hover:not(:disabled){background:#e8e8e8;border-color:var(--primary);color:var(--primary)}.confirm-pages-stepper:disabled{opacity:.4;cursor:not-allowed}.confirm-pages-input{width:60px;padding:8px 12px;border-radius:var(--radius-input);border:1px solid #ddd;font-size:16px;text-align:center;outline:none;transition:border-color var(--t-fast)}.confirm-pages-input:focus{border-color:var(--primary)}.confirm-pages-hint{font-size:12px;color:#95a5a6}.confirm-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:24px}.confirm-btn-cancel{padding:10px 20px;border-radius:var(--radius-btn);border:1px solid #ddd;background:#f5f5f5;color:#555;font-size:14px;cursor:pointer;transition:all var(--t-fast) var(--ease)}.confirm-btn-cancel:hover{background:#e8e8e8}.confirm-btn-ok{padding:10px 24px;border-radius:var(--radius-btn);border:none;background:var(--grad-cta);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:all var(--t-fast) var(--ease);box-shadow:0 2px 8px #4f46e54d}.confirm-btn-ok:hover{background:var(--grad-cta);transform:translateY(-1px);box-shadow:0 4px 12px #4f46e566}.confirm-btn-ok:disabled{opacity:.5;cursor:not-allowed;transform:none}.confirm-upload-section{margin-bottom:8px}.confirm-upload-area{padding:16px 20px;border-radius:var(--radius-md);border:1px dashed #ccc;background:#fafafa;text-align:center;cursor:pointer;transition:all var(--t-fast) var(--ease)}.confirm-upload-area:hover{border-color:var(--primary);background:var(--primary-soft)}.confirm-upload-area.uploading{opacity:.6;cursor:not-allowed;border-color:#ccc;background:#f5f5f5}.confirm-upload-input{display:none}.confirm-upload-icon{font-size:28px;margin-bottom:4px}.confirm-upload-hint{font-size:14px;color:#555}.confirm-upload-hint-sub{font-size:12px;color:#95a5a6;margin-top:4px}.confirm-file-info{display:flex;align-items:center;gap:8px;padding:10px 16px;background:#f0faf0;border-radius:var(--radius-md);border:1px solid #c0e0c0}.confirm-file-icon{font-size:14px}.confirm-file-name{font-size:14px;color:#2c3e50;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.confirm-file-size{font-size:12px;color:#7f8c8d}.confirm-file-remove{font-size:12px;color:var(--primary);cursor:pointer;padding:2px 8px;border-radius:var(--radius-sm);border:1px solid var(--primary);background:transparent;transition:all var(--t-fast) var(--ease)}.confirm-file-remove:hover{background:var(--primary-soft)}.confirm-upload-error{font-size:13px;color:var(--primary);padding:8px 12px;background:var(--error-soft);border-radius:var(--radius-sm);margin-top:8px}.outline-card{max-width:600px;max-height:80vh;display:flex;flex-direction:column}.outline-preview{flex:1;overflow-y:auto;margin-bottom:16px;padding:16px;background:#fafafa;border-radius:var(--radius-md);border:1px solid #eee}.outline-edit-area{margin-bottom:12px}.outline-feedback-input{width:100%;padding:12px;border-radius:var(--radius-md);border:1px solid #ddd;font-size:14px;resize:vertical;outline:none;transition:border-color var(--t-fast);min-height:80px}.outline-feedback-input:focus{border-color:var(--primary)}.outline-action-bar{padding:12px 16px;background:#fff8f0;border-top:1px solid #ffe0c0;border-bottom:1px solid #ffe0c0}.outline-action-hint{font-size:14px;color:#555;margin-bottom:8px}.outline-action-buttons{display:flex;align-items:center;gap:8px}.outline-action-or{color:#aaa;font-size:12px}.outline-action-feedback{color:#888;font-size:13px}.outline-preview-host{display:flex;flex-direction:column;height:100%}.outline-preview-body{flex:1;overflow-y:auto;padding:24px;background:#fafafa}.slide-preview-host{display:flex;height:100%;gap:0}.slide-thumbnails{width:140px;min-width:140px;background:#f5f5f5;border-right:1px solid #ddd;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:12px}.slide-thumb-item{position:relative;border-radius:var(--radius-sm);border:2px solid transparent;cursor:pointer;transition:all var(--t-fast) var(--ease);overflow:hidden;background:var(--bg-elev);box-shadow:0 1px 4px #0000000f;flex-shrink:0}.slide-thumb-item:not(.active):hover{border-color:#4f46e54d}.slide-thumb-item.active{border-color:var(--primary);box-shadow:0 2px 8px #4f46e533}.slide-thumb-item.pending{background:#fafafa;display:flex;justify-content:center;align-items:center;min-height:80px;color:#aaa;font-size:13px}.slide-thumb-wrapper{width:100%;height:0;padding-bottom:75%;position:relative;overflow:hidden}.slide-thumb-iframe{position:absolute;top:0;left:0;width:1000px;height:768px;transform:scale(.156);transform-origin:top left;border:none}.slide-thumb-title{padding:4px 8px;font-size:12px;color:#555;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.slide-detail-area{flex:1;display:flex;flex-direction:column;background:#e8ecf1;position:relative;overflow:hidden}.slide-toolbar{display:flex;align-items:center;gap:8px;padding:6px 16px;background:#f8f9fa;border-bottom:1px solid #ddd;min-height:40px;flex-shrink:0}.slide-toolbar-btn{padding:4px 12px;border-radius:var(--radius-sm);border:1px solid #ddd;background:#f5f5f5;color:#555;font-size:13px;cursor:pointer;transition:all var(--t-fast) var(--ease);white-space:nowrap}.slide-toolbar-btn:hover{background:#e8e8e8;border-color:var(--primary);color:var(--primary)}.slide-toolbar-btn.save-btn{background:var(--grad-cta);color:#fff;border:none;font-weight:600}.slide-toolbar-btn.save-btn:hover{background:var(--grad-cta);transform:translateY(-1px);box-shadow:0 2px 8px #4f46e54d}.slide-toolbar-btn.cancel-btn{background:var(--bg-elev);color:var(--primary);border-color:var(--primary)}.slide-toolbar-btn.cancel-btn:hover{background:var(--primary-soft)}.slide-toolbar-hint{font-size:12px;color:var(--primary);padding:0 8px}.slide-toolbar-info{font-size:13px;color:#888;padding:0 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.slide-detail-iframe-wrapper{position:relative;overflow:hidden;margin-top:8px}.slide-detail-iframe{flex:1;border:none;width:100%;height:100%}.slide-detail-bar{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;background:#f5f5f5;border-top:1px solid #ddd;font-size:14px;color:#555}.slide-page-info{font-size:14px;color:#555;flex:1;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.slide-page-btn{padding:4px 12px;border-radius:var(--radius-sm);border:1px solid #ddd;background:#f5f5f5;color:#555;font-size:13px;cursor:pointer;transition:all var(--t-fast) var(--ease);white-space:nowrap}.slide-page-btn:hover:not(:disabled){background:#e8e8e8;border-color:var(--primary);color:var(--primary)}.slide-page-btn:disabled{opacity:.4;cursor:not-allowed}.slide-download-btn{padding:6px 14px;border-radius:var(--radius-btn);border:none;background:var(--grad-cta);color:#fff;font-size:13px;font-weight:600;cursor:pointer;transition:all var(--t-fast) var(--ease)}.slide-download-btn:hover{background:var(--grad-cta);transform:translateY(-1px);box-shadow:0 4px 12px #4f46e566}.slide-fullscreen-btn{padding:6px 14px;border-radius:var(--radius-btn);border:1px solid var(--primary);background:transparent;color:var(--primary);font-size:13px;font-weight:600;cursor:pointer;transition:all var(--t-fast) var(--ease)}.slide-fullscreen-btn:hover:not(:disabled){background:var(--tag-bg)}.slide-fullscreen-btn:disabled{opacity:.5;cursor:not-allowed}.slide-progress{font-size:13px;color:#7f8c8d}.modify-card{max-width:560px}.modify-btn{border-color:#f39c12;color:#f39c12}.modify-btn:hover{background:#fef9e7;border-color:#f39c12;color:#e67e22}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.slide-fullscreen-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9999;background:#000}.slide-fullscreen-iframe-wrapper{position:absolute;top:0;left:0;overflow:hidden}.slide-fullscreen-indicator{position:absolute;bottom:12px;right:20px;font-size:16px;color:#888;z-index:10000;pointer-events:none}.slide-fullscreen-exit-btn{position:absolute;top:12px;right:12px;z-index:10000;padding:8px 16px;border-radius:8px;background:#000000b3;color:#fff;font-size:14px;cursor:pointer;font-weight:600;box-shadow:0 2px 8px #0000004d;border:none;transition:background .2s ease}.slide-fullscreen-exit-btn:hover{background:#000000d9}.confirm-material-pick-btn{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border:1px dashed var(--primary);border-radius:var(--radius-btn);background:var(--tag-bg);color:var(--primary);font-size:13px;cursor:pointer}.confirm-material-count{background:var(--primary);color:#fff;font-size:11px;padding:1px 8px;border-radius:999px}.confirm-material-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.confirm-material-chip{display:inline-flex;align-items:center;gap:4px;background:var(--bg-elev);border:1px solid var(--border);border-radius:999px;padding:3px 6px 3px 10px;font-size:12px;color:var(--text-2)}.confirm-material-chip-x{border:none;background:none;color:var(--text-2);cursor:pointer;font-size:14px;line-height:1;padding:0 2px}.confirm-material-chip-x:hover{color:var(--primary)}.material-picker-card{width:640px;max-width:92vw;max-height:85vh;display:flex;flex-direction:column}.material-picker-card h3{margin:0;font-size:16px}.material-picker-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.material-pick-close{border:none;background:var(--bg-elev);color:var(--text-2);width:28px;height:28px;border-radius:50%;font-size:16px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center}.material-pick-close:hover{background:var(--primary-soft, #eef2ff);color:var(--primary)}.material-picker-toolbar{display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap}.material-picker-tabs{display:flex;gap:6px;flex-wrap:wrap}.material-picker-tab{padding:5px 12px;border:1px solid var(--border);border-radius:999px;background:var(--bg-elev);color:var(--text-2);font-size:12px;cursor:pointer;transition:all .15s var(--ease)}.material-picker-tab:not(.active):hover{color:var(--primary);border-color:var(--primary)}.material-picker-tab.active{color:#fff;background:var(--primary);border-color:var(--primary)}.material-picker-search{flex:1;min-width:140px;padding:6px 12px;border:1px solid var(--border);border-radius:var(--radius-btn);font-size:13px;background:var(--bg-elev)}.material-picker-search:focus{outline:none;border-color:var(--primary)}.material-picker-empty{padding:40px 0;text-align:center;color:var(--text-2);font-size:13px}.material-picker-list{flex:1;overflow-y:auto;display:grid;grid-template-columns:repeat(auto-fill,190px);justify-content:start;gap:12px;padding-bottom:8px}.material-pick-item{position:relative;display:flex;flex-direction:column;text-align:left;padding:0;border:2px solid var(--border);border-radius:12px;overflow:hidden;background:var(--bg-elev);cursor:pointer;transition:border-color .15s var(--ease),transform .15s var(--ease),box-shadow .15s var(--ease)}.material-pick-item:hover{transform:translateY(-2px);box-shadow:0 4px 14px #00000014}.material-pick-item.selected{border-color:var(--primary)}.material-pick-thumb{width:100%;aspect-ratio:4 / 3;background:var(--panel-2);display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}.material-pick-thumb img{width:100%;height:100%;object-fit:contain}.material-pick-thumb video{width:100%;height:100%;object-fit:cover}.material-pick-thumb iframe{border:none}.material-pick-emoji{font-size:40px}.material-pick-info{padding:10px 12px 12px;display:flex;flex-direction:column;gap:3px}.material-pick-title{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.material-pick-desc{font-size:11px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:28px}.material-pick-type{font-size:10px;color:var(--text-2)}.material-pick-check{position:absolute;top:8px;right:8px;width:24px;height:24px;border-radius:50%;background:var(--primary);color:#fff;font-size:14px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 6px #0003}.studio-root{height:100%;display:grid;grid-template-rows:56px 1fr;background:var(--bg);overflow:hidden}.studio-cols{display:grid;grid-template-columns:180px minmax(300px,24%) 1fr;height:100%;min-height:0;gap:12px;padding:14px}.studio-sidebar{display:flex;flex-direction:column;min-height:0;background:var(--bg-elev);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);overflow:hidden}.studio-sidebar-header{height:42px;padding:0 12px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-2);font-weight:500;border-bottom:1px solid var(--border)}.studio-sidebar-header .small{height:26px;padding:0 10px;font-size:12px;border-radius:var(--radius-pill)}.studio-conv-list{flex:1;min-height:0;overflow-y:auto;padding:6px}.studio-conv-list::-webkit-scrollbar{width:6px}.studio-conv-list::-webkit-scrollbar-thumb{background:#d5d5d5;border-radius:3px}.studio-conv-item{position:relative;padding:8px 10px;border-radius:var(--radius-sm);cursor:pointer;transition:background .15s}.studio-conv-item:hover{background:var(--panel-2)}.studio-conv-item.active{background:#4f46e514}.studio-conv-name{font-size:13px;color:var(--text);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding-right:36px}.studio-conv-time{font-size:11px;color:var(--text-2);margin-top:2px}.studio-conv-draft{position:absolute;top:8px;right:8px;font-size:10px;color:var(--text-2);background:var(--panel-2);border-radius:var(--radius-pill);padding:1px 6px}.studio-conv-edit-btn{position:absolute;bottom:6px;right:8px;background:transparent;border:none;color:var(--text-2);cursor:pointer;font-size:12px;padding:2px 4px;border-radius:var(--radius-sm);opacity:0;transition:opacity .15s}.studio-conv-item:hover .studio-conv-edit-btn{opacity:1}.studio-conv-edit-btn:hover{color:var(--text);background:var(--panel-2)}.studio-conv-edit-input{width:100%;font-size:13px;padding:4px 6px;border:1px solid var(--primary, var(--primary));border-radius:var(--radius-sm);background:var(--bg);outline:none}.studio-conv-delete-btn{position:absolute;bottom:28px;right:8px;background:transparent;border:none;color:var(--text-2);cursor:pointer;font-size:16px;line-height:1;padding:2px 4px;border-radius:var(--radius-sm);opacity:0;transition:opacity .15s}.studio-conv-item:hover .studio-conv-delete-btn{opacity:1}.studio-conv-delete-btn:hover{color:var(--error);background:var(--panel-2)}.studio-new-conv-form{padding:8px;border-top:1px solid var(--border);display:flex;gap:6px;flex-wrap:wrap}.studio-new-conv-form input{flex:1;min-width:0;font-size:13px;padding:6px 8px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);outline:none}.studio-new-conv-form button{font-size:12px;padding:6px 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var(--sp-2);border-radius:var(--r-sm);background:var(--surface-sunken);border:1px solid transparent;transition:background var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease)}.quiz-option-row:has(input[type=checkbox]:checked){background:var(--success-soft);border-color:var(--success)}.quiz-option-row.ok{background:var(--success-soft)}.quiz-option-row.bad{background:var(--error-soft)}.quiz-option-row input[type=checkbox]{width:16px;height:16px;min-width:16px;margin:0;padding:0;border:0;background:none;border-radius:0;accent-color:var(--primary);cursor:pointer;flex-shrink:0}.quiz-option-key{display:inline-flex;align-items:center;justify-content:center;min-width:26px;height:24px;padding:0 4px;font-weight:600;font-size:var(--fs-sm);color:var(--primary);background:var(--panel);border:1px solid var(--border);border-radius:var(--r-xs);flex-shrink:0}.quiz-option-text{flex:1;min-width:0;border:1px solid var(--border);border-radius:var(--r-sm);padding:6px 10px;font:inherit;font-size:var(--fs-sm);background:var(--panel);color:var(--text)}.quiz-option-row .btn{flex-shrink:0}.quiz-fill-input{width:100%;border:1px solid var(--border);border-radius:var(--r-md);padding:var(--sp-2) var(--sp-3);font:inherit;background:var(--panel);color:var(--text)}.segmented{display:inline-flex;border:1px solid var(--border);border-radius:var(--r-pill);overflow:hidden;background:var(--surface-sunken)}.segmented button{border:none;background:transparent;color:var(--muted);padding:var(--sp-1) var(--sp-4);font:inherit;cursor:pointer}.segmented button.active{background:var(--primary);color:var(--primary-on)}.overlay-head,.overlay-foot{display:flex;align-items:center;gap:var(--sp-2);padding:var(--sp-3) var(--sp-4)}.overlay-head{justify-content:space-between;border-bottom:1px solid var(--border)}.overlay-head .spacer,.overlay-foot .spacer{flex:1}.overlay-title{font-size:var(--fs-lg);font-weight:600;color:var(--text)}.overlay-body{padding:var(--sp-4);overflow-y:auto}.overlay-foot{border-top:1px solid var(--border);justify-content:flex-end}.toast-host{position:fixed;top:20px;left:50%;transform:translate(-50%);z-index:9999;display:flex;flex-direction:column;align-items:center;gap:8px;pointer-events:none}.toast{pointer-events:auto;display:flex;align-items:center;gap:8px;min-width:220px;max-width:460px;padding:9px 16px;border-radius:var(--r-md);background:var(--panel);border:1px solid var(--border);border-left-width:3px;box-shadow:var(--shadow-lg);font-size:var(--fs-sm);line-height:1.45;color:var(--text);cursor:pointer;animation:toast-in .22s var(--ease-out)}.toast__icon{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;border-radius:50%;font-size:11px;font-weight:700;color:#fff;flex-shrink:0}.toast__msg{flex:1}.toast--success{border-left-color:var(--success)}.toast--success .toast__icon{background:var(--success)}.toast--error{border-left-color:var(--error)}.toast--error .toast__icon{background:var(--error)}.toast--warning{border-left-color:var(--warn)}.toast--warning .toast__icon{background:var(--warn)}.toast--info{border-left-color:var(--primary)}.toast--info .toast__icon{background:var(--primary)}@keyframes toast-in{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}