:root{--c-brand:#2f6f62;--c-brand-strong:#255a4f;--c-bg:#f5f6f3;--c-paper:#fbfbf9;--c-text:#1c2430;--c-muted:#59665f;--c-divider:#dadfd8;--c-control-border:#778a7f;--c-jade-light:#a8c7b7;--c-bronze:#9a8054;--c-stamp:#b8382a;--c-danger:#9b2c22;--c-warn:#7a5a12;--c-focus:#2f6f62;--r-sm:12px;--r-md:18px;--r-lg:24px;--s-1:4px;--s-2:8px;--s-3:12px;--s-4:16px;--s-5:24px;--s-6:32px;--s-7:48px;--s-8:64px;--font-serif:"Songti SC", "STSong", "SimSun", serif;--font-sans:"PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;--fs-body:16px;--fs-label:14px;--lh-body:1.65;--nav-w:72px;--nav-w-open:224px;--content-max:1200px;--chat-max:720px;--surface-paper:#fbfbf9fa;--surface-mist:#f5f6f3cc;--surface-liquid:#fafaf8e0;--shadow-panel:0 18px 48px #1c243029, 0 2px 6px #1c24300f;--z-content:1;--z-nav:20;--z-scrim:40;--z-overlay:50;--z-toast:70;--dur-open:.28s;--dur-close:.2s;--ease-out:cubic-bezier(.2, .8, .2, 1)}@media (prefers-reduced-motion:reduce){:root{--dur-open:.1s;--dur-close:.1s}}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--c-bg);color:var(--c-text);font-family:var(--font-sans);font-size:var(--fs-body);line-height:var(--lh-body);-webkit-font-smoothing:antialiased;margin:0}h1,h2,h3{font-family:var(--font-serif);margin:0 0 var(--s-3);font-weight:600;line-height:1.3}h1{font-size:clamp(26px,3.2vw,40px)}h2{font-size:clamp(20px,2.2vw,26px)}h3{font-size:18px}p{margin:0 0 var(--s-3)}a{color:var(--c-brand)}button,input,select,textarea{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--c-focus);outline-offset:2px;border-radius:6px}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.muted{color:var(--c-muted)}.small{font-size:var(--fs-label)}.btn{justify-content:center;align-items:center;gap:var(--s-2);min-height:44px;padding:0 var(--s-5);border-radius:var(--r-sm);border:1.5px solid var(--c-control-border);background:var(--c-paper);color:var(--c-text);cursor:pointer;transition:transform .12s var(--ease-out), background-color .16s, border-color .16s, box-shadow .16s;font-weight:500;text-decoration:none;display:inline-flex}.btn:hover:not(:disabled){border-color:var(--c-brand);transform:translateY(-1px)}.btn:active:not(:disabled){transform:scale(.98)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--c-brand);border-color:var(--c-brand);color:#f5f6f3;min-height:48px;box-shadow:inset 0 1px #ffffff2e}.btn-primary:hover:not(:disabled){background:var(--c-brand-strong);border-color:var(--c-brand-strong)}.btn-primary .arrow{font-size:18px;line-height:1}.btn-text{padding:0 var(--s-3);color:var(--c-brand);background:0 0;border-color:#0000}.btn-text:hover:not(:disabled){border-color:#0000;text-decoration:underline;transform:none}.btn-danger{color:var(--c-danger);border-color:var(--c-danger)}.field{gap:var(--s-1);margin-bottom:var(--s-4);flex-direction:column;display:flex}.field label,.field .label{font-size:var(--fs-label);color:var(--c-muted);font-weight:500}.input,.select,.textarea{min-height:44px;padding:var(--s-2) var(--s-3);border:1.5px solid var(--c-control-border);border-radius:var(--r-sm);background:#fff;width:100%}.textarea{resize:vertical;min-height:88px}.input:focus,.select:focus,.textarea:focus{outline:2px solid var(--c-focus);outline-offset:1px}.check{align-items:flex-start;gap:var(--s-2);cursor:pointer;min-height:44px;padding:var(--s-2) 0;display:flex}.check input{width:20px;height:20px;accent-color:var(--c-brand);flex:none;margin-top:3px}.chips{gap:var(--s-2);flex-wrap:wrap;display:flex}.chip{min-height:44px;padding:0 var(--s-4);border-radius:var(--r-sm);border:1.5px solid var(--c-control-border);cursor:pointer;background:#fff}.chip[aria-pressed=true],.chip[aria-checked=true]{border-color:var(--c-brand);color:var(--c-brand-strong);background:#e7efeb;font-weight:600}.chip[aria-pressed=true]:before,.chip[aria-checked=true]:before{content:"✓ "}.notice{gap:var(--s-2);padding:var(--s-3) var(--s-4);border-radius:var(--r-sm);border:1.5px solid var(--c-control-border);background:var(--c-paper);align-items:flex-start;display:flex}.notice-error{border-color:var(--c-danger);color:var(--c-danger);background:#fbf1ef}.notice-warn{color:var(--c-warn);background:#fbf6ea;border-color:#b08a35}.notice-ok{border-color:var(--c-brand);color:var(--c-brand-strong);background:#eef4f1}.notice .icon{flex:none;font-weight:700}.badge{padding:0 var(--s-2);white-space:nowrap;border:1px solid;border-radius:999px;align-items:center;gap:4px;min-height:24px;font-size:13px;line-height:1.4;display:inline-flex}.badge-ok{color:var(--c-brand-strong)}.badge-lock{color:var(--c-warn)}.badge-pause{color:var(--c-danger)}.badge-muted{color:var(--c-muted)}.shell{min-height:100dvh;display:flex}.main{min-width:0;padding:var(--s-6) var(--s-5) calc(var(--s-8) + 24px);flex:1}.page-narrow{max-width:760px;margin:0 auto}.section{background:var(--surface-paper);border:1px solid var(--c-divider);border-radius:var(--r-md);padding:var(--s-5);margin-bottom:var(--s-5)}.row{gap:var(--s-3);flex-wrap:wrap;align-items:center;display:flex}.spacer{flex:1}.list{margin:0;padding:0;list-style:none}.list>li{padding:var(--s-3) 0;border-bottom:1px solid var(--c-divider)}.list>li:last-child{border-bottom:0}.nav{height:100dvh;width:var(--nav-w);gap:var(--s-1);padding:var(--s-3) var(--s-2);background:var(--surface-mist);border-right:1px solid var(--c-divider);-webkit-backdrop-filter:blur(18px);z-index:var(--z-nav);transition:width var(--dur-open) var(--ease-out);flex-direction:column;flex:none;display:flex;position:sticky;top:0}.nav.open{width:var(--nav-w-open)}.nav-toggle{width:56px;height:44px;margin:0 auto var(--s-2)}.nav.open .nav-toggle{margin-left:0}.nav-item{align-items:center;gap:var(--s-3);min-height:52px;padding:0 var(--s-3);border-radius:var(--r-sm);color:var(--c-text);text-decoration:none;display:flex;position:relative}.nav-item svg{flex:none;width:24px;height:24px}.nav-item .nav-label{font-size:var(--fs-label);white-space:nowrap;overflow:hidden}.nav:not(.open) .nav-item{padding:var(--s-1) 0;flex-direction:column;justify-content:center;gap:2px}.nav:not(.open) .nav-item .nav-label{font-size:12px;display:none}.nav:not(.open) .nav-item.active .nav-label{display:block}.nav-item:hover{background:#2f6f6214}.nav-item.active{color:var(--c-brand-strong);background:#e2ece7;font-weight:600}.nav-bottom{margin-top:auto}.brand-mark{font-family:var(--font-serif);color:var(--c-brand);text-align:center;margin-bottom:var(--s-2);font-size:15px;font-weight:700}.tabbar{display:none}@media (width<=767px){.nav{display:none}.main{padding:var(--s-5) var(--s-4) calc(76px + env(safe-area-inset-bottom))}.tabbar{z-index:var(--z-nav);padding-bottom:env(safe-area-inset-bottom);background:var(--surface-mist);border-top:1px solid var(--c-divider);-webkit-backdrop-filter:blur(18px);grid-template-columns:repeat(5,1fr);display:grid;position:fixed;bottom:0;left:0;right:0}.tabbar a{min-height:60px;color:var(--c-muted);flex-direction:column;justify-content:center;align-items:center;font-size:12px;text-decoration:none;display:flex}.tabbar a.active{color:var(--c-brand-strong);font-weight:600}.tabbar svg{width:22px;height:22px}.section{padding:var(--s-4)}}@supports not ((-webkit-backdrop-filter:blur(1px)) or (backdrop-filter:blur(1px))){.nav,.tabbar{background:#f5f6f3f7}}.auth-wrap{min-height:100dvh;padding:var(--s-5) var(--s-4);place-items:center;display:grid}.auth-card{background:var(--surface-paper);border:1px solid var(--c-divider);border-radius:var(--r-lg);width:100%;max-width:480px;padding:var(--s-6) var(--s-5)}.auth-title{text-align:center;margin-bottom:var(--s-5)}.auth-title h1{margin-bottom:var(--s-1);letter-spacing:.08em;font-size:36px}.grid-2{gap:0 var(--s-3);grid-template-columns:1fr 1fr;display:grid}@media (width<=480px){.grid-2{grid-template-columns:1fr}}.today-hero{padding:var(--s-6) 0 var(--s-5)}.today-hero h1{font-size:clamp(30px,4vw,44px)}.stat-row{gap:var(--s-6);margin-top:var(--s-5);flex-wrap:wrap;display:flex}.stat .num{font-family:var(--font-serif);font-size:28px}.stat .lbl{font-size:var(--fs-label);color:var(--c-muted)}.chat{max-width:var(--chat-max);flex-direction:column;min-height:calc(100dvh - 120px);margin:0 auto;display:flex}.chat-head{align-items:center;gap:var(--s-3);padding-bottom:var(--s-3);border-bottom:1px solid var(--c-divider);margin-bottom:var(--s-4);flex-wrap:wrap;display:flex}.mentor-chip{align-items:center;gap:var(--s-2);display:flex}.mentor-chip .mentor-icon{width:36px;height:36px}.mentor-name{font-family:var(--font-serif);font-size:18px;font-weight:600}.ai-tag{color:var(--c-muted);border:1px solid var(--c-divider);border-radius:999px;padding:0 8px;font-size:12px}.msgs{gap:var(--s-4);flex-direction:column;flex:1;display:flex}.msg{max-width:100%}.msg-user{border-radius:var(--r-md) var(--r-md) 4px var(--r-md);max-width:85%;padding:var(--s-2) var(--s-4);white-space:pre-wrap;word-break:break-word;background:#e2ece7;align-self:flex-end}.msg-ai{background:var(--surface-paper);border:1px solid var(--c-divider);border-radius:4px var(--r-md) var(--r-md) var(--r-md);padding:var(--s-3) var(--s-4);align-self:stretch}.msg-ai .md>:last-child{margin-bottom:0}.msg-ai .md p{margin:0 0 var(--s-2)}.msg-meta{gap:var(--s-2);color:var(--c-muted);margin-bottom:var(--s-1);align-items:center;font-size:13px;display:flex}.stream-status{color:var(--c-muted);font-size:13px}.options{gap:var(--s-2);margin-top:var(--s-3);flex-direction:column;display:flex}.option{align-items:flex-start;gap:var(--s-3);text-align:left;width:100%;min-height:48px;padding:var(--s-2) var(--s-4);border:1.5px solid var(--c-control-border);border-radius:var(--r-sm);cursor:pointer;background:#fff;transition:border-color .15s,background-color .15s;display:flex}.option:hover:not(:disabled){border-color:var(--c-brand)}.option[aria-pressed=true]{border-color:var(--c-brand);background:#e7efeb}.option:disabled{cursor:default;opacity:.7}.option .k{color:var(--c-brand);flex:none;min-width:1.2em;font-weight:700}.option .hint{color:var(--c-muted);font-size:13px;display:block}.composer{background:linear-gradient(to top, var(--c-bg) 75%, #f5f6f300);padding:var(--s-4) 0 var(--s-3);margin-top:var(--s-4);position:sticky;bottom:0}.composer-row{gap:var(--s-2);align-items:flex-end;display:flex}.composer textarea{min-height:48px;max-height:180px}@media (width<=767px){.composer{bottom:calc(60px + env(safe-area-inset-bottom))}}.mentor-icon{color:var(--c-brand-strong);background:#e7efeb;border-radius:50%;flex:none;place-items:center;display:inline-grid}.mentor-icon svg{width:62%;height:62%}.mentor-option{gap:var(--s-3);text-align:left;width:100%;min-height:64px;padding:var(--s-2) var(--s-3);border-radius:var(--r-sm);border:1.5px solid var(--c-divider);cursor:pointer;background:#fff;align-items:center;display:flex}.mentor-option .mentor-icon{width:44px;height:44px}.table-wrap{overflow-x:auto}table.table{border-collapse:collapse;width:100%;font-size:15px}.table th,.table td{text-align:left;padding:var(--s-2) var(--s-3);border-bottom:1px solid var(--c-divider);vertical-align:top}.table th{color:var(--c-muted);font-weight:600;font-size:var(--fs-label);white-space:nowrap}.tier-head td{background:#eef1ed;font-weight:600}.scrim{z-index:var(--z-scrim);opacity:0;transition:opacity var(--dur-open) var(--ease-out);background:#1c243047;position:fixed;inset:0}.scrim[data-state=open]{opacity:1}.scrim[data-state=closing]{opacity:0;transition-duration:var(--dur-close)}.panel{z-index:var(--z-overlay);background:var(--surface-liquid);box-shadow:var(--shadow-panel), inset 0 1px 0 #fffc;-webkit-backdrop-filter:blur(24px)saturate(1.1);opacity:0;transition:opacity var(--dur-open) var(--ease-out), transform var(--dur-open) var(--ease-out);border:1px solid #ffffffb3;flex-direction:column;display:flex;position:fixed}.panel[data-state=open]{opacity:1;transform:none}.panel[hidden]{display:none}.panel[data-state=closing]{opacity:0;transition-duration:var(--dur-close)}.panel-drawer{border-radius:var(--r-lg);width:min(420px,100vw - 32px);top:16px;bottom:16px;right:16px;transform:translate(20px)scale(.99)}.panel-dialog{border-radius:var(--r-lg);width:min(640px,100vw - 32px);max-height:calc(100dvh - 48px);top:50%;left:50%;transform:translate(-50%,-48%)scale(.98)}.panel-dialog[data-state=open]{transform:translate(-50%,-50%)}.panel-dialog[data-state=closing]{transform:translate(-50%,-48%)scale(.98)}.panel-head{align-items:center;gap:var(--s-2);padding:var(--s-4) var(--s-4) var(--s-3) var(--s-5);border-bottom:1px solid var(--c-divider);display:flex}.panel-head h2{flex:1;margin:0;font-size:20px}.panel-close{border-radius:var(--r-sm);cursor:pointer;background:0 0;border:0;width:44px;height:44px;font-size:22px;line-height:1}.panel-close:hover{background:#1c24300f}.panel-body{padding:var(--s-4) var(--s-5);background:#fbfbf999;flex:1;overflow-y:auto}.panel-foot{padding:var(--s-3) var(--s-5) var(--s-4);border-top:1px solid var(--c-divider);gap:var(--s-2);justify-content:flex-end;display:flex}@media (width<=767px){.panel-drawer{border-radius:var(--r-lg) var(--r-lg) 0 0;width:100%;max-height:85dvh;padding-bottom:env(safe-area-inset-bottom);inset:auto 0 0;transform:translateY(24px)}}@supports not ((-webkit-backdrop-filter:blur(1px)) or (backdrop-filter:blur(1px))){.panel{background:#fbfbf9f7}}@media (prefers-reduced-motion:reduce){.panel,.panel-drawer,.panel-dialog{transform:none!important}.panel-dialog{transform:translate(-50%,-50%)!important}.btn:hover:not(:disabled){transform:none}}.toasts{z-index:var(--z-toast);gap:var(--s-2);pointer-events:none;flex-direction:column;width:min(480px,100vw - 32px);display:flex;position:fixed;bottom:24px;left:50%;transform:translate(-50%)}.toasts .notice{pointer-events:auto;box-shadow:var(--shadow-panel)}@media (width<=767px){.toasts{bottom:calc(76px + env(safe-area-inset-bottom))}}.page{max-width:var(--content-max);margin:0 auto}.grid-3{gap:var(--s-3);grid-template-columns:repeat(3,1fr);display:grid}@media (width<=760px){.grid-3{grid-template-columns:1fr}}.card{border:1px solid var(--c-divider);border-radius:var(--r-sm);padding:var(--s-4);margin-bottom:var(--s-3);background:#fff}.btn-sm{min-height:36px;padding:0 var(--s-3);font-size:var(--fs-label)}.badge-warn{color:var(--c-warn)}.lv-1{color:var(--c-brand-strong);border-color:var(--c-brand)}.lv-2{color:var(--c-brand)}.lv-3{color:var(--c-bronze)}.lv-4{color:var(--c-muted);border-style:dashed}.dot{border:2px solid var(--c-control-border);background:var(--c-paper);width:40px;height:40px;color:var(--c-muted);border-radius:50%;flex:none;justify-content:center;align-items:center;font-weight:700;display:inline-flex}.dot.sm{border-width:1.5px;width:28px;height:28px;font-size:13px}.dot.done,.done>.dot,.map-node.done .dot{background:var(--c-brand);border-color:var(--c-brand);color:#fff}.dot.in_progress{border-color:var(--c-brand);color:var(--c-brand-strong)}.steps{margin:var(--s-5) 0;gap:var(--s-4);flex-wrap:wrap;padding:0;list-style:none;display:flex}.steps li{align-items:center;gap:var(--s-2);color:var(--c-muted);display:flex}.steps li.active{color:var(--c-text);font-weight:600}.steps li.active .dot{border-color:var(--c-brand);color:var(--c-brand-strong)}.steps li.done .dot{background:var(--c-brand);border-color:var(--c-brand);color:#fff}.mentor-list{gap:var(--s-3);display:grid}.mentor-option{gap:var(--s-3);text-align:left;border:1px solid var(--c-divider);border-radius:var(--r-sm);padding:var(--s-3) var(--s-4);cursor:pointer;font:inherit;color:inherit;background:#fff;align-items:center;min-height:64px;display:flex}.mentor-option[aria-pressed=true]{border-color:var(--c-brand);background:#e7efeb}.map-wrap{padding:var(--s-5) var(--s-2) var(--s-3);border-radius:var(--r-sm);background:radial-gradient(120% 60% at 20% 100%,#a8c7b759,#0000 60%),radial-gradient(90% 50% at 80% 100%,#a8c7b740,#0000 60%),linear-gradient(#f5f6f300 0%,#dadfd866 100%);position:relative;overflow-x:auto}.map{gap:var(--s-4);align-items:flex-start;margin:0;padding:0;list-style:none;display:flex}.map-node{flex:none;min-width:120px;max-width:220px;position:relative}.map-node:not(:last-child):after{content:"";top:20px;left:48px;right:calc(-1 * var(--s-4));border-top:2px dashed var(--c-jade-light);position:absolute}.map-node.done:not(:last-child):after{border-top-style:solid;border-color:var(--c-brand)}.map-dot{align-items:center;gap:var(--s-2);color:inherit;z-index:1;min-height:44px;text-decoration:none;display:flex;position:relative}.map-dot[aria-disabled=true]{cursor:not-allowed;opacity:.6}.map-label{background:var(--c-bg);padding-right:var(--s-2);flex-direction:column;line-height:1.3;display:flex}.map-label .name{font-weight:600}.map-node.current .dot{border-color:var(--c-brand);color:var(--c-brand-strong);box-shadow:0 0 0 4px #2f6f622e}.map-node.current .name{color:var(--c-brand-strong)}.stat-row{gap:var(--s-3);grid-template-columns:repeat(3,1fr);display:grid}.stat{flex-direction:column;gap:2px;display:flex}.stat strong{font-size:24px;font-family:var(--font-serif)}.float-bar{bottom:var(--s-4);z-index:var(--z-content);justify-content:space-around;gap:var(--s-2);margin-top:var(--s-5);padding:var(--s-2);background:var(--surface-liquid);border:1px solid var(--c-divider);border-radius:999px;display:flex;position:sticky;box-shadow:0 6px 18px #1c243014}.float-bar a{text-align:center;padding:var(--s-2) var(--s-3);min-height:44px;color:var(--c-text);font-size:var(--fs-label);border-radius:999px;flex:1;justify-content:center;align-items:center;text-decoration:none;display:flex}.float-bar a:hover{background:#e7efeb}@media (width<=760px){.float-bar{bottom:calc(72px + var(--s-2))}}.check-list,.task-list{margin:0;padding:0;list-style:none}.check-list>li{border-bottom:1px solid var(--c-divider)}.task-list>li{gap:var(--s-2);padding:var(--s-2) 0;border-bottom:1px dashed var(--c-divider);flex-wrap:wrap;align-items:center;display:flex}.stamp{border:3px solid var(--c-stamp);width:92px;height:92px;color:var(--c-stamp);font-family:var(--font-serif);animation:stamp-in var(--dur-open) var(--ease-out);border-radius:50%;flex-direction:column;justify-content:center;align-items:center;display:inline-flex;transform:rotate(-12deg)}.stamp-line{letter-spacing:2px;font-size:20px;font-weight:700}.stamp-sub{text-align:center;padding:0 6px;font-size:10px;line-height:1.2}@keyframes stamp-in{0%{opacity:0;transform:rotate(-12deg)scale(1.4)}to{opacity:1;transform:rotate(-12deg)scale(1)}}@media (prefers-reduced-motion:reduce){.stamp{animation:none}}.tabs{gap:var(--s-2);border-bottom:1px solid var(--c-divider);margin-top:var(--s-4);display:flex}.tabs button{font:inherit;color:var(--c-muted);padding:var(--s-3) var(--s-4);cursor:pointer;background:0 0;border:0;border-bottom:2px solid #0000;min-height:44px}.tabs button.active{color:var(--c-brand-strong);border-bottom-color:var(--c-brand);font-weight:600}.slide-wrap{margin-bottom:var(--s-4)}.slide{aspect-ratio:16/9;background:var(--c-paper);border:1px solid var(--c-divider);border-radius:var(--r-md);gap:var(--s-3);flex-direction:column;padding:clamp(16px,4vw,48px);display:flex;overflow:auto}.slide h2{font-family:var(--font-serif);margin:0;font-size:clamp(22px,3vw,36px)}.slide-cover{text-align:center;background:linear-gradient(180deg, var(--c-paper), #e7efeb);justify-content:center}.slide .lead{color:var(--c-muted);font-size:clamp(16px,2vw,22px)}.slide-points{margin:0;padding-left:1.2em;font-size:clamp(16px,2vw,22px);line-height:1.8}.slide-cards{gap:var(--s-3);grid-template-columns:repeat(auto-fit,minmax(180px,1fr));display:grid}.slide-card{border:1px solid var(--c-divider);border-radius:var(--r-sm);padding:var(--s-3) var(--s-4);background:#fff}.slide-card p{margin:var(--s-1) 0 0;color:var(--c-muted)}.slide-timeline{gap:var(--s-2);margin:0;padding:0;list-style:none;display:grid}.slide-timeline li{gap:var(--s-3);padding:var(--s-2) 0;border-bottom:1px dashed var(--c-divider);grid-template-columns:120px 1fr auto;align-items:center;display:grid}.slide-timeline .when{color:var(--c-brand-strong);font-weight:700}.slide-cols{gap:var(--s-5);grid-template-columns:1fr 1fr;display:grid}.slide-cols h3{margin-top:0}@media (width<=600px){.slide{aspect-ratio:auto}.slide-cols,.slide-timeline li{grid-template-columns:1fr}}.slide-pyramid{gap:var(--s-2);width:100%;max-width:640px;margin:0 auto;padding:0;list-style:none;display:grid}.slide-pyramid li{gap:var(--s-3);padding:var(--s-2) var(--s-4);border-radius:var(--r-sm);background:#e7efeb;align-items:baseline;margin:0 auto;display:flex}.slide-pyramid li[data-strength="4"]{background:var(--c-brand);color:#fff;width:55%}.slide-pyramid li[data-strength="3"]{width:70%}.slide-pyramid li[data-strength="2"]{background:#f1ece2;width:85%}.slide-pyramid li[data-strength="1"]{border:1px dashed var(--c-control-border);background:#f0f1ee;width:100%}@media (width<=600px){.slide-pyramid li{flex-direction:column;width:100%!important}}.projector{z-index:var(--z-overlay);background:var(--c-bg);flex-direction:column;display:flex;position:fixed;inset:0}.proj-bar,.proj-nav{align-items:center;gap:var(--s-3);padding:var(--s-3) var(--s-5);display:flex}.proj-stage{padding:0 var(--s-5);flex:1;justify-content:center;align-items:center;min-height:0;display:flex}.proj-stage .slide{width:min(100%,177.778vh - 355.556px)}.proj-note{margin:0 var(--s-5);padding:var(--s-3) var(--s-4);border-radius:var(--r-sm);background:#fff6e5}.proj-nav{justify-content:space-between}.poll-row{gap:var(--s-2);margin-top:var(--s-2);grid-template-columns:24px 1fr 110px;align-items:center;display:grid}.poll-bar{background:var(--c-brand);border-radius:7px;height:14px;display:block}.poll-label{font-weight:700}.quiz{padding-left:1.2em}.quiz>li{margin-bottom:var(--s-4)}@media print{.nav,.tabbar,.float-bar,.btn,.notice,.composer,.msgs-wrap{display:none!important}.section{break-inside:avoid;border:0;padding:0}}.section-title{margin:var(--s-5) 0 var(--s-3);font-size:18px;font-family:var(--font-serif)}.intervention{border-left:3px solid var(--c-bronze)}.intervention h3{font-size:17px}.intervention .chips{margin-top:var(--s-2)}.handoff{background:linear-gradient(180deg, var(--surface-paper), #eef3ef);border-left:3px solid var(--c-brand)}.handoff p{line-height:1.7}@media print{.handoff,.intervention{display:none!important}}.kb-form{border:1px dashed var(--c-control-border);border-radius:var(--r-sm);padding:var(--s-4);margin:var(--s-4) 0;background:#fdfdfb}.desk-list{gap:var(--s-3);margin:0;padding:0;list-style:none;display:grid}.desk-card{align-items:center;gap:var(--s-3);padding:var(--s-4);border:1px solid var(--c-divider);border-radius:var(--r-sm);color:inherit;background:#fff;min-height:44px;text-decoration:none;display:flex}.desk-card:hover{border-color:var(--c-brand)}.desk-body{flex-direction:column;flex:1;min-width:0;line-height:1.45;display:flex}.desk-body strong{font-size:17px}.desk-mentor{flex:none;align-items:center;gap:4px;display:inline-flex}.desks-tabs{margin-bottom:var(--s-4)}.section .poll-bar{min-width:8px}.msg-twin{border:1.5px dashed var(--c-bronze);border-radius:var(--r-sm);padding:var(--s-3) var(--s-4);margin:var(--s-3) 0;background:#fbf8f1}.twin-tag{border:1px dashed var(--c-bronze);color:var(--c-bronze);border-radius:999px;padding:1px 8px;font-size:12px;display:inline-block}.twin-avatar{border:1.5px dashed var(--c-bronze);width:44px;height:44px;color:var(--c-bronze);border-radius:50%;justify-content:center;align-items:center;display:inline-flex}.twin-avatar svg{width:24px;height:24px}.twin-avatar.sm{width:28px;height:28px}.twin-avatar.sm svg{width:16px;height:16px}.twin-section{border-top:1px solid var(--c-divider);padding-top:var(--s-3);margin-top:var(--s-3)}.twin-preview{white-space:pre-wrap;border:1px solid var(--c-divider);border-radius:var(--r-sm);max-height:260px;padding:var(--s-3);font-size:14px;font-family:var(--font-sans);background:#fff;overflow:auto}.lab-grid{gap:var(--s-4);margin-top:var(--s-4);grid-template-columns:minmax(280px,380px) 1fr;display:grid}.lab-compare{gap:var(--s-3);grid-template-columns:1fr 1fr;display:grid}.code-block{white-space:pre-wrap;word-break:break-all;color:#e8ece8;border-radius:var(--r-sm);padding:var(--s-3) var(--s-4);background:#1c2430;max-height:420px;font-size:13px;line-height:1.55;overflow:auto}@media (width<=860px){.lab-grid,.lab-compare{grid-template-columns:1fr}}.review-grid{gap:var(--s-3);grid-template-columns:repeat(auto-fit,minmax(300px,1fr));display:grid}.score-table{border-collapse:collapse;width:100%;margin:var(--s-2) 0}.score-table th,.score-table td{border-bottom:1px solid var(--c-divider);text-align:left;vertical-align:top;padding:6px 8px}.score-table th{white-space:nowrap;color:var(--c-muted);font-weight:600}.score-table td.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}.compare-row{margin:var(--s-3) 0}@media (width<=760px){.score-table{display:block;overflow-x:auto}}.sources{flex-wrap:wrap;align-items:center;gap:6px;margin-top:8px;display:flex}.source-tag{border:1px solid var(--c-brand);color:var(--c-brand-strong);cursor:pointer;background:#eef4f1;border-radius:999px;min-height:28px;padding:2px 10px;font-size:12px}.source-snippet{border-radius:var(--r-sm);background:#f5f6f3;width:100%;margin:4px 0 0;padding:8px 12px}.feedback-bar{flex-wrap:wrap;align-items:center;gap:6px;margin-top:6px;display:flex}.metric-grid{gap:var(--s-3);grid-template-columns:repeat(auto-fill,minmax(180px,1fr));display:grid}.metric{padding:var(--s-3);border:1px solid var(--c-divider);border-radius:var(--r-sm);text-align:left;background:#fff;flex-direction:column;gap:2px;display:flex}.metric .num{font-family:var(--font-serif);color:var(--c-text);font-size:26px}.metric .num small{color:var(--c-muted);margin-left:2px;font-size:13px}.metric .lbl{font-size:var(--fs-label);color:var(--c-muted)}.metric .formula{color:var(--c-muted);margin-top:4px;font-size:12px;line-height:1.4}.metric-btn{cursor:pointer;font:inherit}.metric-btn:hover{border-color:var(--c-brand)}.chart{margin:0}.chart-wrap{position:relative}.chart-tip{pointer-events:none;color:#fff;white-space:nowrap;z-index:2;background:#1c2430;border-radius:6px;padding:4px 8px;font-size:12px;position:absolute}.mentor-pick{gap:var(--s-2);grid-template-columns:repeat(auto-fill,minmax(220px,1fr));display:grid}.demo-banner{margin-bottom:var(--s-4)}.today-stage{min-height:min(58vh,560px);margin:calc(-1 * var(--s-6)) calc(-1 * var(--s-5)) var(--s-5);align-items:flex-start;display:flex;position:relative}.scene{z-index:0;pointer-events:none;position:absolute;inset:0;overflow:hidden}.scene-2d-svg{width:100%;height:62%;transition:opacity .6s var(--ease-out);position:absolute;bottom:0;left:0;right:0}.scene-3d{opacity:0;transition:opacity .6s var(--ease-out);position:absolute;inset:0}.scene-ready .scene-3d{opacity:1}.scene-ready .scene-2d-svg{opacity:0}.scene-canvas{inset:0;position:absolute!important}.scene-note{right:var(--s-4);bottom:var(--s-3);pointer-events:auto;font-size:var(--fs-label);color:var(--c-muted);background:var(--surface-paper);border:1px solid var(--c-divider);border-radius:var(--r-sm);align-items:center;gap:4px;margin:0;padding:4px 4px 4px 12px;display:flex;position:absolute}.today-stage .today-hero{z-index:1;margin:var(--s-6) var(--s-5) 0;max-width:680px;padding:var(--s-5) var(--s-6);background:var(--surface-mist);border-radius:var(--r-lg);-webkit-backdrop-filter:blur(18px)saturate(1.05);border:1px solid #ffffffbf;position:relative;box-shadow:0 8px 28px #1c243014}@media (width<=767px){.today-stage{margin:calc(-1 * var(--s-5)) calc(-1 * var(--s-4)) var(--s-4);min-height:0;padding-bottom:38vw}.today-stage .today-hero{margin:var(--s-4) var(--s-3) 0;padding:var(--s-4)}.scene-2d-svg{height:40%}.scene-note{left:var(--s-3);right:var(--s-3)}}body.simple-mode .nav,body.simple-mode .tabbar,body.simple-mode .panel,body.simple-mode .today-stage .today-hero,body.simple-mode .float-bar{-webkit-backdrop-filter:none!important;border-color:var(--c-divider)!important;background:#fbfbf9f7!important}@supports not ((-webkit-backdrop-filter:blur(1px)) or (backdrop-filter:blur(1px))){.today-stage .today-hero,.float-bar{border-color:var(--c-divider);background:#fbfbf9f7}}@media print{.scene{display:none}}.option,.chip{transition:border-color .15s var(--ease-out), background-color .15s var(--ease-out)}.chip[aria-pressed=true]:before,.chip[aria-checked=true]:before,.option[aria-pressed=true] .k{animation:tick-in .15s var(--ease-out)}@keyframes tick-in{0%{opacity:0;transform:scale(.6)}to{opacity:1;transform:none}}.mentor-chip,.msg-meta{animation:fade-in .2s var(--ease-out)}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.saved{animation:saved-pop .36s var(--ease-out)}@keyframes saved-pop{0%{transform:scale(1)}40%{transform:scale(.985)}to{transform:none}}.speaking .mentor-icon{transition:box-shadow .2s var(--ease-out);box-shadow:0 0 0 3px #2f6f6240}.skip-link{left:var(--s-3);z-index:var(--z-toast);background:var(--c-brand);color:#fff;border-radius:var(--r-sm);padding:12px 16px;text-decoration:none;position:absolute;top:-60px}.skip-link:focus{top:var(--s-3)}.btn:focus-visible,.chip:focus-visible,.option:focus-visible,a:focus-visible,.nav-item:focus-visible,.source-tag:focus-visible{outline:2px solid var(--c-focus);outline-offset:2px}@media (prefers-reduced-motion:reduce){*,:before,:after{animation-duration:1ms!important;animation-iteration-count:1!important}.scene-2d-svg,.scene-3d,.panel,.scrim,.nav{transition-duration:.1s!important}}