.studio-app{--studio-bg:#fff;--studio-chrome:#fff;--studio-surface:#fff;--studio-surface-2:#f2f2f0;--studio-surface-3:#e8e8e5;--studio-border-subtle:#ececea;--studio-border-strong:#1a1a1a1f;--studio-text-1:#0a0a0a;--studio-text-2:#525252;--studio-text-3:#9a9a95;--studio-brand:#3b5bff;--studio-brand-soft:#eaeeff;--studio-success:#1f8a4c;--studio-warning:#d4881f;--studio-danger:#c0382b;--studio-font-sans:"Inter", system-ui, -apple-system, sans-serif;--studio-font-serif:"Fraunces", "Times New Roman", serif;--studio-font-mono:"JetBrains Mono", ui-monospace, monospace;font-family:var(--studio-font-sans);color:var(--studio-text-1);background:var(--studio-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-feature-settings:"cv11", "ss01";font-size:14px;line-height:1.5}.studio-app *{box-sizing:border-box}.studio-app .studio-serif{font-family:var(--studio-font-serif);letter-spacing:-.025em;font-weight:300}.studio-app .studio-mono{font-family:var(--studio-font-mono)}@keyframes studio-app-shimmer{0%{background-position:0%}50%{background-position:100%}to{background-position:0%}}.studio-app .studio-ai-grad{background:linear-gradient(135deg,#c8b5ff 0%,#8ab6ff 50%,#b5e8d1 100%) 0 0/200% 200%;animation:6s linear infinite studio-app-shimmer}.studio-app .studio-ai-grad-soft{background:linear-gradient(135deg,#c8b5ff33,#8ab6ff33,#b5e8d133)}.studio-app ::-webkit-scrollbar{width:10px;height:10px}.studio-app ::-webkit-scrollbar-track{background:0 0}.studio-app ::-webkit-scrollbar-thumb{border:2px solid var(--studio-bg);background:#0000001a;border-radius:10px}.studio-app ::-webkit-scrollbar-thumb:hover{background:#0000002e}.studio-app ::selection{background:var(--studio-brand);color:#fff}.studio-app{filter:none;perspective:none;-webkit-backdrop-filter:none;backdrop-filter:none;transform:none}.studio-app .studio-shell{background:var(--studio-bg);min-height:100vh;color:var(--studio-text-1);box-sizing:border-box;padding-top:72px;padding-left:64px;padding-right:320px;position:relative}@media (max-width:900px){.studio-app .studio-shell{padding-right:0}.studio-app .studio-rightrail{display:none!important}}@media (max-width:768px){.studio-app .studio-rail{display:none!important}.studio-app .studio-shell{padding-left:0;padding-bottom:calc(88px + env(safe-area-inset-bottom,0px))}}.studio-app .studio-shell--single{padding:0}.studio-app .studio-assistant{box-sizing:border-box;min-height:100vh;padding-top:72px;padding-left:64px;position:relative}.studio-app .studio-assistant-main{min-width:0;height:calc(100vh - 72px);overflow:hidden}@media (max-width:768px){.studio-app .studio-assistant{padding-left:0}.studio-app .studio-assistant-main{height:calc(100vh - 72px - 64px - env(safe-area-inset-bottom,0px))}}.studio-app--lesson .studio-rail,.studio-app--lesson .studio-topbar,.studio-app--lesson .studio-rightrail,.studio-app--lesson .studio-bottomnav{display:none!important}.studio-app .studio-lesson-inner{width:100%}.studio-app--lesson{background:var(--studio-bg);min-height:100vh}.studio-app--lesson header.fixed,.studio-app--lesson header[class*=fixed][class*=top-0]{border-bottom:1px solid var(--studio-border-subtle);font-family:var(--studio-font-sans);background:var(--studio-chrome)!important}.studio-app--lesson header[class*=fixed][class*=top-0] button[class*=text-gray-400]{color:var(--studio-text-2)!important}.studio-app--lesson header[class*=fixed][class*=top-0] button[class*=text-gray-400]:hover{color:var(--studio-text-1)!important}.studio-app--lesson header[class*=fixed] div[role=progressbar]{overflow:hidden;background:var(--studio-surface-2)!important;border-radius:999px!important;height:6px!important}.studio-app--lesson header[class*=fixed] div[role=progressbar]>div{background:var(--studio-text-1)!important;border-radius:999px!important}.studio-app--lesson header[class*=fixed] span[class*=text-red-500]{font-family:var(--studio-font-mono);font-variant-numeric:tabular-nums;font-size:13px;color:var(--studio-text-1)!important}.studio-app--lesson button[class*="bg-[#58cc02]"],.studio-app--lesson button[class*=bg-green-500],.studio-app--lesson button[class*=bg-green-400],.studio-app--lesson button[class*=hover\:brightness-110][class*=bg-\[]{font-family:var(--studio-font-sans);font-weight:500;background:var(--studio-text-1)!important;color:#fff!important;text-transform:none!important;letter-spacing:0!important;border-color:#0000!important;border-radius:10px!important}.studio-app--lesson div[class*=bg-green-100]{border-top:1px solid var(--studio-border-subtle);background:#1f8a4c14!important}.studio-app--lesson div[class*=bg-red-100]{border-top:1px solid var(--studio-border-subtle);background:#c0382b0f!important}.studio-app--lesson .studio-lesson-inner{padding:0}.studio-app .studio-main{flex-direction:column;min-width:0;display:flex}.studio-app .studio-main-inner{width:100%;max-width:1080px;margin:0 auto;padding:36px 56px 80px}@media (max-width:1180px){.studio-app .studio-main-inner{padding:28px 28px 80px}}.studio-app .studio-rail{border-right:1px solid var(--studio-border-subtle);background:var(--studio-chrome);z-index:1000;flex-direction:column;align-items:center;gap:2px;width:64px;padding:14px 0;display:flex;position:fixed!important;inset:0 auto 0 0!important}.studio-app .studio-rail-logo{cursor:pointer;background:0 0;border:0;place-items:center;width:36px;height:36px;margin-bottom:14px;transition:transform .2s cubic-bezier(.32,.72,0,1);display:grid}.studio-app .studio-rail-logo:hover{transform:rotate(-6deg)}.studio-app .studio-rail-item{width:40px;height:40px;color:var(--studio-text-2);cursor:pointer;background:0 0;border:0;border-radius:12px;place-items:center;transition:background .15s,color .15s;display:grid;position:relative}.studio-app .studio-rail-item:hover{background:var(--studio-surface-2);color:var(--studio-text-1)}.studio-app .studio-rail-item.is-active{color:var(--studio-text-1)}.studio-app .studio-rail-item.is-active:before{content:"";background:var(--studio-text-1);border-radius:0 3px 3px 0;width:3px;height:18px;position:absolute;top:50%;left:-12px;transform:translateY(-50%)}.studio-app .studio-rail-tip{pointer-events:none;white-space:nowrap;border:1px solid var(--studio-border-subtle);background:var(--studio-chrome);color:var(--studio-text-1);opacity:0;z-index:50;border-radius:999px;padding:6px 12px;font-size:12.5px;font-weight:500;transition:opacity .2s,transform .2s cubic-bezier(.32,.72,0,1);position:absolute;top:50%;left:calc(100% + 14px);transform:translateY(-50%)translate(-4px);box-shadow:0 1px 2px #0f0f0f0a,0 6px 16px #0f0f0f14}.studio-app .studio-rail-item:hover .studio-rail-tip{opacity:1;transform:translateY(-50%)translate(0)}.studio-app .studio-rail-sep{background:var(--studio-border-subtle);width:24px;height:1px;margin:6px 0}.studio-app .studio-rail-avatar{color:#4a2f1a;cursor:pointer;background:linear-gradient(135deg,#e8c4a0,#d4a574);border:0;border-radius:50%;place-items:center;width:32px;height:32px;margin-top:6px;font-size:11.5px;font-weight:600;display:grid}.studio-app .studio-topbar{z-index:999;background:var(--studio-chrome);border-bottom:1px solid var(--studio-border-subtle);align-items:center;gap:14px;height:72px;padding:0 24px 0 20px;display:flex;position:fixed!important;inset:0 0 auto 64px!important}.studio-app .studio-topbar-left{flex-shrink:0;align-items:center;gap:14px;display:flex}.studio-app .studio-topbar-right{flex:1;justify-content:flex-end;align-items:center;gap:10px;min-width:0;margin-left:auto;display:flex}.studio-app .studio-brand{letter-spacing:-.02em;color:inherit;align-items:center;gap:8px;font-size:17px;font-weight:700;line-height:1;text-decoration:none;display:inline-flex}.studio-app .studio-brand-name{align-items:center;line-height:1;display:inline-flex}.studio-app .studio-brand-logo{flex-shrink:0;align-items:center;display:none}.studio-app .studio-brand-dot{background:var(--studio-brand);border-radius:50%;align-self:flex-end;width:5px;height:5px;margin-bottom:3px;margin-left:3px;display:inline-block}.studio-app .studio-route-label{color:var(--studio-text-2);white-space:nowrap;font-size:13px;font-weight:500}@media (max-width:1180px){.studio-app .studio-route-label{display:none}}@media (max-width:768px){.studio-app .studio-topbar{gap:6px;padding:0 12px 0 16px;left:0!important}.studio-app .studio-shell{padding-left:0!important;padding-right:0!important}.studio-app .studio-topbar-left{gap:8px}.studio-app .studio-topbar-left>span:not(.studio-route-label):not(.studio-brand){display:none}.studio-app .studio-brand{letter-spacing:-.015em;gap:10px;font-size:18px}.studio-app .studio-brand-logo{display:inline-flex}.studio-app .studio-ctx,.studio-app .studio-searchbar{display:none!important}.studio-app .studio-topbar-right{gap:6px}.studio-app .studio-stat-pill{gap:4px;width:58px;padding:0 7px;font-size:12px}.studio-app .studio-topbar-right>.studio-btn-primary{display:none}}.studio-app .studio-ctx{border:1px solid var(--studio-border-subtle);background:var(--studio-surface-2);border-radius:999px;flex-shrink:0;align-items:center;gap:2px;padding:2px;display:inline-flex}.studio-app .studio-ctx>*{color:var(--studio-text-2);cursor:pointer;white-space:nowrap;background:0 0;border:0;border-radius:999px;align-items:center;gap:6px;padding:4px 12px;font-size:12.5px;font-weight:500;line-height:1;text-decoration:none;transition:color .15s,background .15s;display:inline-flex}.studio-app .studio-ctx>.is-on{background:var(--studio-surface);color:var(--studio-text-1);cursor:default;box-shadow:0 1px 2px #0f0f0f0a}.studio-app .studio-ctx>:not(.is-on):hover{color:var(--studio-text-1)}@media (max-width:1080px){.studio-app .studio-ctx{display:none}}.studio-app .studio-searchbar{background:var(--studio-surface-2);min-width:0;max-width:280px;height:36px;color:var(--studio-text-3);cursor:pointer;border:0;border-radius:999px;flex:1;align-items:center;gap:8px;padding:0 12px;font-size:13px;display:inline-flex;overflow:hidden}.studio-app .studio-searchbar:hover{background:var(--studio-surface-3)}.studio-app .studio-kbd{background:var(--studio-surface);font-family:var(--studio-font-mono);color:var(--studio-text-2);border:1px solid #0000;border-bottom-width:2px;border-radius:4px;margin-left:auto;padding:1px 5px;font-size:11px}.studio-app .studio-btn-primary{background:var(--studio-text-1);color:#fff;cursor:pointer;white-space:nowrap;border:0;border-radius:10px;flex-shrink:0;align-items:center;gap:8px;padding:7px 12px;font-size:13px;font-weight:500;display:inline-flex}.studio-app .studio-btn-primary:hover{background:#1a1a1a}.studio-app .studio-btn-ghost{color:var(--studio-text-2);cursor:pointer;white-space:nowrap;background:0 0;border:0;border-radius:8px;align-items:center;gap:6px;padding:6px 10px;font-size:13px;font-weight:500;display:inline-flex}.studio-app .studio-btn-ghost:hover{background:var(--studio-surface-2);color:var(--studio-text-1)}.studio-app .studio-icon-btn{width:36px;height:36px;color:var(--studio-text-1);cursor:pointer;background:0 0;border:0;border-radius:10px;place-items:center;display:grid}.studio-app .studio-icon-btn:hover{background:var(--studio-surface-2)}.studio-app .studio-stat-pill{border:1px solid var(--studio-border-subtle);background:var(--studio-surface);width:68px;height:36px;color:var(--studio-text-2);white-space:nowrap;font-variant-numeric:tabular-nums;cursor:pointer;border-radius:999px;flex-shrink:0;justify-content:center;align-items:center;gap:6px;padding:0 10px;font-size:12.5px;font-weight:500;text-decoration:none;transition:background .15s,border-color .15s,color .15s;display:inline-flex}.studio-app .studio-stat-pill .studio-dot{border-radius:50%;width:6px;height:6px}.studio-app button.studio-stat-pill{font-family:var(--studio-font-mono)}.studio-app .studio-stat-pill:hover,.studio-app .studio-stat-pill.is-active{background:var(--studio-surface-2);border-color:var(--studio-border-strong)}.studio-app .studio-stat-backdrop{z-index:1001;cursor:default;appearance:none;background:#0a0a0a14;border:0;padding:0;position:fixed;inset:72px 0 0}.studio-app .studio-stat-dropdown{z-index:1002;border:1px solid var(--studio-border-subtle);background:var(--studio-chrome);border-radius:18px;width:min(380px,100vw - 24px);max-height:calc(100vh - 104px);position:fixed;top:82px;right:20px;overflow:auto;box-shadow:0 18px 60px #0f0f0f24,0 2px 8px #0f0f0f0f}.studio-app .studio-stat-card{flex-direction:column;gap:16px;padding:18px;display:flex}.studio-app .studio-stat-card.is-compact{flex-direction:row;align-items:center}.studio-app .studio-stat-card h2{letter-spacing:-.02em;color:var(--studio-text-1);margin:0;font-size:19px;font-weight:700;line-height:1.2}.studio-app .studio-stat-card p{color:var(--studio-text-2);margin:4px 0 0;font-size:13.5px;line-height:1.45}.studio-app .studio-stat-card-strong{font-weight:600;color:var(--studio-text-1)!important}.studio-app .studio-stat-card-strong span{color:var(--studio-danger)}.studio-app .studio-stat-card-head{align-items:flex-start;gap:12px;display:flex}.studio-app .studio-stat-card-head.is-centered{align-items:center}.studio-app .studio-stat-card-icon{background:var(--studio-surface-2);width:44px;height:44px;color:var(--studio-text-1);border-radius:14px;flex:none;place-items:center;display:grid}.studio-app .studio-stat-card-icon.is-streak{color:var(--studio-warning);background:#d4881f1c}.studio-app .studio-stat-card-icon.is-points{background:var(--studio-brand-soft);color:var(--studio-brand)}.studio-app .studio-stat-card-icon.is-hearts{color:var(--studio-danger);background:#c0382b17}.studio-app .studio-stat-card-link{color:var(--studio-brand);letter-spacing:.02em;text-transform:uppercase;margin-top:10px;font-size:12.5px;font-weight:700;text-decoration:none;display:inline-flex}.studio-app .studio-stat-card-link:hover{color:#1f3fff}.studio-app .studio-stat-actions{flex-direction:column;gap:10px;display:flex}.studio-app .studio-stat-action{border:1px solid var(--studio-border-subtle);background:var(--studio-surface);width:100%;color:var(--studio-text-1);cursor:pointer;border-radius:14px;justify-content:space-between;align-items:center;gap:12px;padding:12px 14px;font-size:13px;font-weight:600;display:flex}.studio-app .studio-stat-action:hover:not(:disabled){background:var(--studio-surface-2);border-color:var(--studio-border-strong)}.studio-app .studio-stat-action:disabled{cursor:not-allowed;color:var(--studio-text-3);opacity:.6}.studio-app .studio-stat-action span,.studio-app .studio-stat-action strong{align-items:center;gap:7px;display:inline-flex}@media (max-width:768px){.studio-app .studio-stat-dropdown{width:auto;max-height:calc(100vh - 160px);top:80px;left:10px;right:10px}.studio-app .studio-stat-card{padding:16px}}.studio-app .studio-bottomnav{display:none}@media (max-width:768px){.studio-app .studio-bottomnav{z-index:1000;background:var(--studio-chrome);border-top:1px solid var(--studio-border-subtle);padding-bottom:env(safe-area-inset-bottom,0px);display:block;position:fixed!important;bottom:0!important;left:0!important;right:0!important}.studio-app .studio-bottomnav ul{grid-template-columns:repeat(5,1fr);height:64px;margin:0;padding:0;list-style:none;display:grid}.studio-app .studio-bottomnav li{display:flex}.studio-app .studio-bottomnav-item{color:var(--studio-text-2);letter-spacing:.01em;-webkit-tap-highlight-color:transparent;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:3px;font-size:10.5px;font-weight:500;text-decoration:none;transition:color .15s;display:inline-flex}.studio-app .studio-bottomnav-item:hover,.studio-app .studio-bottomnav-item.is-active{color:var(--studio-text-1)}.studio-app .studio-bottomnav-item.is-active:before{content:"";background:var(--studio-text-1);border-radius:0 0 2px 2px;width:28px;height:2px;position:absolute;top:0}.studio-app .studio-bottomnav-item{position:relative}}.studio-app .studio-rightrail{z-index:998;border-left:1px solid var(--studio-border-subtle);background:var(--studio-chrome);flex-direction:column;width:320px;display:flex;overflow:hidden;position:fixed!important;inset:72px 0 0 auto!important}.studio-app .studio-rr-head{border-bottom:1px solid var(--studio-border-subtle);flex-shrink:0;justify-content:space-between;align-items:center;gap:8px;height:72px;padding:0 16px;display:flex}.studio-app .studio-rr-head h3{letter-spacing:-.005em;margin:0;font-size:13px;font-weight:600}.studio-app .studio-rr-tabs{background:var(--studio-surface-2);border:1px solid var(--studio-border-subtle);border-radius:8px;align-items:center;gap:1px;padding:2px;display:inline-flex}.studio-app .studio-rr-tabs button{color:var(--studio-text-2);cursor:pointer;background:0 0;border:0;border-radius:6px;padding:3px 8px;font-size:11.5px;font-weight:500}.studio-app .studio-rr-tabs button.is-on{background:var(--studio-surface);color:var(--studio-text-1);box-shadow:0 1px 2px #0f0f0f0a}.studio-app .studio-rr-scroll{flex-direction:column;flex:1;gap:18px;padding:18px;display:flex;overflow-y:auto}.studio-app .studio-rr-foot{border-top:1px solid var(--studio-border-subtle);flex-shrink:0;align-items:center;gap:10px;padding:12px 18px;display:flex}.studio-app .studio-rr-section{flex-direction:column;gap:8px;display:flex}.studio-app .studio-rr-sh{justify-content:space-between;align-items:center;padding:0 2px;display:flex}.studio-app .studio-rr-sh .studio-rr-title{letter-spacing:-.005em;white-space:nowrap;align-items:center;gap:8px;font-size:12.5px;font-weight:600;display:inline-flex}.studio-app .studio-rr-sh .studio-rr-title svg{color:var(--studio-text-2);flex-shrink:0}.studio-app .studio-rr-sh .studio-rr-meta{font-family:var(--studio-font-mono);color:var(--studio-text-3);text-transform:uppercase;letter-spacing:.08em;white-space:nowrap;flex-shrink:0;font-size:10.5px}.studio-app .studio-rr-card{border:1px solid var(--studio-border-subtle);background:var(--studio-surface);border-radius:12px;overflow:hidden}.studio-app .studio-rr-card *{min-width:0}.studio-app .studio-rr-row{cursor:pointer;align-items:center;gap:10px;padding:10px 12px;display:flex}.studio-app .studio-rr-row+.studio-rr-row{border-top:1px solid var(--studio-border-subtle)}.studio-app .studio-rr-row:hover{background:var(--studio-surface-2)}.studio-app .studio-rr-row .studio-rr-ico{background:var(--studio-surface-2);width:28px;height:28px;color:var(--studio-text-2);border-radius:7px;flex-shrink:0;place-items:center;display:grid}.studio-app .studio-rr-row .studio-rr-body{flex:1;min-width:0}.studio-app .studio-rr-row .studio-rr-body .studio-rr-t{letter-spacing:-.005em;text-overflow:ellipsis;white-space:nowrap;font-size:12.5px;font-weight:500;overflow:hidden}.studio-app .studio-rr-row .studio-rr-body .studio-rr-s{color:var(--studio-text-3);font-size:11px;font-family:var(--studio-font-mono);margin-top:2px}.studio-app .studio-rr-quest{padding:10px 12px}.studio-app .studio-rr-quest+.studio-rr-quest{border-top:1px solid var(--studio-border-subtle)}.studio-app .studio-rr-quest .studio-rr-head-row{align-items:center;gap:10px;margin-bottom:8px;display:flex}.studio-app .studio-rr-quest .studio-rr-head-row .studio-rr-t{letter-spacing:-.005em;font-size:12.5px;font-weight:500}.studio-app .studio-rr-meter{align-items:center;gap:8px;display:flex}.studio-app .studio-rr-meter .studio-rr-bar{background:var(--studio-surface-2);border-radius:999px;flex:1;height:5px;overflow:hidden}.studio-app .studio-rr-meter .studio-rr-bar>i{background:var(--studio-text-1);border-radius:999px;height:100%;display:block}.studio-app .studio-rr-meter .studio-rr-val{font-family:var(--studio-font-mono);color:var(--studio-text-2);font-variant-numeric:tabular-nums;font-size:10.5px}.studio-app .studio-rr-rank{border-radius:8px;align-items:center;gap:10px;padding:8px 12px;display:flex}.studio-app .studio-rr-rank+.studio-rr-rank{margin-top:2px}.studio-app .studio-rr-rank.is-me{background:var(--studio-brand-soft)}.studio-app .studio-rr-rank .studio-rk{font-family:var(--studio-font-mono);color:var(--studio-text-3);text-align:right;width:20px;font-size:10.5px}.studio-app .studio-rr-rank .studio-av{color:#fff;background:var(--studio-text-2);border-radius:50%;place-items:center;width:22px;height:22px;font-size:10px;font-weight:600;display:grid}.studio-app .studio-rr-rank .studio-nm{flex:1;font-size:12.5px}.studio-app .studio-rr-rank .studio-xp{font-family:var(--studio-font-mono);color:var(--studio-text-2);font-variant-numeric:tabular-nums;font-size:11px}.studio-app .studio-rr-tutor{background:linear-gradient(#3b5bff0a,#3b5bff03);padding:12px}.studio-app .studio-rr-tutor .studio-by{align-items:center;gap:8px;margin-bottom:8px;display:flex}.studio-app .studio-rr-tutor .studio-by .studio-av{color:#fff;background:#0a0a0a;border-radius:50%;place-items:center;width:24px;height:24px;display:grid}.studio-app .studio-rr-tutor .studio-by .studio-nm{letter-spacing:-.005em;font-size:12px;font-weight:600}.studio-app .studio-rr-tutor p{color:var(--studio-text-1);margin:0 0 10px;font-size:12.5px;line-height:1.5}.studio-app 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