:root{--bg-0:oklch(13.5% .02 250);--bg-1:oklch(16.5% .018 250);--bg-2:oklch(19.5% .016 250);--bg-3:oklch(23% .014 250);--bg-4:oklch(27% .013 250);--fg-1:oklch(96% .005 80);--fg-2:oklch(78% .008 80);--fg-3:oklch(62% .01 80);--fg-4:oklch(46% .012 80);--border:oklch(96% .008 80/.08);--border-strong:oklch(96% .008 80/.14);--border-accent:oklch(66% .205 42/.5);--accent:oklch(66% .205 42);--accent-hi:oklch(72% .205 42);--accent-lo:oklch(55% .2 42);--accent-fg:oklch(10% .02 250);--accent-tint:oklch(66% .205 42/.1);--accent-tint-2:oklch(66% .205 42/.18);--accent-ring:oklch(66% .205 42/.35);--easy:oklch(74% .16 165);--easy-bg:oklch(74% .16 165/.12);--med:oklch(80% .155 78);--med-bg:oklch(80% .155 78/.12);--hard:oklch(66% .205 25);--hard-bg:oklch(66% .205 25/.12);--solved:var(--easy);--solved-bg:var(--easy-bg);--alarm:var(--hard);--alarm-bg:var(--hard-bg);--shadow-sm:0 1px 0 oklch(0% 0 0/.3);--shadow-md:0 2px 4px oklch(0% 0 0/.3), 0 6px 16px -6px oklch(0% 0 0/.45);--shadow-lg:0 4px 8px oklch(0% 0 0/.4), 0 24px 56px -16px oklch(0% 0 0/.65);--shadow-pop:0 0 0 1px var(--border-strong), 0 8px 24px -8px oklch(0% 0 0/.55);--r-xs:3px;--r-sm:5px;--r-md:7px;--r-lg:10px;--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--font-mono:"JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;--dur-fast:.1s;--dur:.16s;--dur-slow:.22s;--ease:cubic-bezier(.22, 1, .36, 1);--ease-sheet:cubic-bezier(.32, .72, .16, 1);--sidebar-w:220px;--topbar-h:48px;--page:var(--bg-0);--page-2:var(--bg-1);--page-3:var(--bg-2);--surface:var(--bg-0);--surface-2:var(--bg-1);--surface-3:var(--bg-2);--ink:var(--fg-1);--ink-2:var(--fg-2);--ink-3:var(--fg-3);--ink-4:var(--fg-4);--text:var(--fg-1);--text-muted:var(--fg-2);--text-faint:var(--fg-3);--bg:var(--bg-0);--highlight:var(--accent);--highlight-2:var(--accent-tint-2);--highlight-3:var(--accent-tint);--highlight-ink:var(--accent-fg);--solved-soft:var(--solved-bg);--alarm-soft:var(--alarm-bg);--easy-soft:var(--easy-bg);--med-soft:var(--med-bg);--hard-soft:var(--hard-bg);--rule:var(--border);--rule-faint:var(--border);--accent-soft:var(--accent-tint);--r-xl:var(--r-lg);--font-display:var(--font-sans)}*,:before,:after{box-sizing:border-box}html,body{height:100vh;margin:0;padding:0;overflow:hidden}body{font-family:var(--font-sans);font-feature-settings:"cv11", "ss01", "ss03";background:var(--bg-0);color:var(--fg-1);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;letter-spacing:-.005em;font-size:13px;line-height:1.45}button{cursor:pointer;font-family:inherit}input,select,textarea{font-family:inherit}::selection{background:var(--accent-tint-2);color:var(--fg-1)}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border-strong);background-clip:content-box;border:2px solid #0000;border-radius:100px}::-webkit-scrollbar-thumb:hover{background:oklch(96% .008 80/.25) padding-box content-box;border:2px solid #0000}a{color:inherit;text-decoration:none}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:var(--r-sm)}button:focus-visible,a:focus-visible{outline-offset:3px}.app{grid-template-columns:var(--sidebar-w) 1fr;background:var(--bg-0);height:100vh;display:grid}.main{flex-direction:column;min-width:0;display:flex;overflow:hidden}.content{flex:1;padding:24px 28px 64px;overflow-y:auto}.tab-section{display:none}.tab-section.active{display:block}.sidebar{border-right:1px solid var(--border);background:var(--bg-1);flex-direction:column;gap:1px;padding:12px 8px 8px;display:flex;overflow:hidden}.brand{align-items:center;gap:9px;padding:6px 8px 18px;display:flex}.brand-mark{border-radius:var(--r-sm);background:var(--accent);width:22px;height:22px;color:var(--accent-fg);font-family:var(--font-mono);letter-spacing:-.04em;flex-shrink:0;justify-content:center;align-items:center;font-size:11.5px;font-weight:700;display:flex;position:relative}.brand-mark>span{display:none}.brand-mark:after{content:"/";font-size:13px;font-weight:900}.brand-name{letter-spacing:-.02em;color:var(--fg-1);font-size:14px;font-weight:600}.brand-name span{color:var(--accent);font-weight:700}.sidebar-search-btn{border-radius:var(--r-sm);border:1px solid var(--border);background:var(--bg-0);width:100%;color:var(--fg-3);font-size:12px;font-family:var(--font-sans);cursor:pointer;text-align:left;transition:background var(--dur-fast), border-color var(--dur-fast);align-items:center;gap:8px;margin:0 0 12px;padding:6px 9px;display:flex}.sidebar-search-btn:hover{background:var(--bg-2);border-color:var(--border-strong);color:var(--fg-2)}.sidebar-search-btn svg{flex-shrink:0}.sidebar-search-btn span{flex:1}.sidebar-search-btn kbd{font-family:var(--font-mono);border:1px solid var(--border-strong);background:var(--bg-2);color:var(--fg-3);border-radius:3px;padding:1px 5px;font-size:9.5px;font-weight:500}.nav-section-label{font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--fg-4);padding:14px 9px 6px;font-size:9.5px;font-weight:500}.nav{flex-direction:column;gap:1px;display:flex}.nav-item{border-radius:var(--r-sm);color:var(--fg-2);text-align:left;cursor:pointer;width:100%;transition:background var(--dur-fast), color var(--dur-fast);background:0 0;border:0;align-items:center;gap:9px;padding:6px 9px;font-size:12.5px;font-weight:500;display:flex;position:relative}.nav-item:hover{background:var(--bg-2);color:var(--fg-1)}.nav-item.active{background:var(--bg-3);color:var(--fg-1)}.nav-item.active:before{content:"";background:var(--accent);border-radius:0 2px 2px 0;width:2px;position:absolute;top:6px;bottom:6px;left:0}.nav-icon{width:14px;height:14px;color:var(--fg-3);flex-shrink:0}.nav-item.active .nav-icon{color:var(--accent)}.nav-badge{background:var(--bg-2);color:var(--fg-3);font-family:var(--font-mono);font-variant-numeric:tabular-nums;border-radius:3px;margin-left:auto;padding:1px 6px;font-size:10px;font-weight:500}.nav-item.active .nav-badge{background:var(--accent-tint-2);color:var(--accent)}.sidebar-bottom{border-top:1px solid var(--border);flex-direction:column;gap:4px;margin-top:auto;padding-top:10px;display:flex}.user-card{border-radius:var(--r-sm);background:0 0;border:0;flex-direction:column;gap:8px;padding:6px 8px;display:flex}.user-row{align-items:center;gap:8px;display:flex}.avatar{border-radius:var(--r-xs);background:var(--bg-3);width:22px;height:22px;color:var(--fg-1);font-size:10px;font-weight:600;font-family:var(--font-sans);letter-spacing:.04em;flex-shrink:0;place-items:center;display:grid}.user-name{color:var(--fg-1);font-size:12px;font-weight:500;line-height:1.2}.user-rank{color:var(--fg-3);margin-top:1px;font-size:10.5px}.xp-bar{background:var(--bg-3);border-radius:999px;height:3px;overflow:hidden}.xp-bar-fill{background:var(--accent);transform-origin:0;height:100%;transition:transform var(--dur) var(--ease);border-radius:999px;width:100%}.xp-text{font-family:var(--font-mono);color:var(--fg-3);font-variant-numeric:tabular-nums;justify-content:space-between;font-size:10px;display:flex}.level-pill{display:none}.bmc-card{border-radius:var(--r-sm);color:var(--fg-3);transition:color var(--dur-fast);background:0 0;border:0;align-items:center;gap:7px;padding:6px 8px;font-size:11px;text-decoration:none;display:flex}.bmc-card:hover{color:var(--fg-2)}.bmc-avatar{object-fit:cover;filter:saturate(.7);border-radius:50%;flex-shrink:0;width:18px;height:18px}.bmc-info{flex-direction:column;flex:1;gap:0;min-width:0;display:flex}.bmc-name{display:none}.bmc-tagline{font-size:11px}.bmc-btn{color:var(--accent);background:0 0;border:0;flex-shrink:0;padding:0;font-size:10.5px;font-weight:500;text-decoration:none}.bmc-btn:hover{color:var(--accent-hi)}.topbar{height:var(--topbar-h);border-bottom:1px solid var(--border);background:var(--bg-0);flex-shrink:0;align-items:center;gap:14px;padding:0 18px 0 14px;display:flex}.breadcrumb{color:var(--fg-3);align-items:center;gap:6px;font-size:12.5px;display:flex}.breadcrumb-current{color:var(--fg-1);letter-spacing:-.005em;font-size:12.5px;font-weight:500}.streak-chip{color:var(--fg-2);font-size:11.5px;font-family:var(--font-mono);align-items:center;gap:8px;padding:0;display:inline-flex}.streak-chip-label{color:var(--fg-3);text-transform:uppercase;letter-spacing:.08em;font-size:10.5px;font-weight:500}.streak-chip-num{font-family:var(--font-mono);color:var(--accent);font-variant-numeric:tabular-nums;font-size:13px;font-weight:600}.streak-chip-num-zero{color:var(--fg-4)}.icon-btn{border-radius:var(--r-sm);width:28px;height:28px;color:var(--fg-3);transition:background var(--dur-fast), color var(--dur-fast), border-color var(--dur-fast);background:0 0;border:1px solid #0000;place-items:center;display:grid}.icon-btn:hover{background:var(--bg-2);color:var(--fg-1);border-color:var(--border)}.icon-btn:active{transition:transform 60ms ease-out;transform:scale(.96)}.topbar-signout{border:1px solid var(--border);border-radius:var(--r-sm);cursor:pointer;color:var(--fg-2);font-size:11.5px;font-family:var(--font-sans);transition:background var(--dur-fast);background:0 0;align-items:center;gap:6px;padding:3px 9px 3px 3px;display:none}.topbar-signout:hover{background:var(--bg-2)}.topbar-signin{background:var(--accent);color:var(--accent-fg);border-radius:var(--r-sm);cursor:pointer;font-size:12px;font-weight:600;font-family:var(--font-sans);transition:background var(--dur-fast);border:0;align-items:center;gap:5px;padding:5px 12px;display:inline-flex}.topbar-signin:hover{background:var(--accent-hi)}.topbar-avatar{border-radius:var(--r-xs);background:var(--bg-3);width:20px;height:20px;color:var(--fg-1);font-size:9.5px;font-weight:600;font-family:var(--font-sans);flex-shrink:0;justify-content:center;align-items:center;display:flex}@media (width<=900px){.topbar-signout{display:flex}}.page-header{justify-content:space-between;align-items:flex-end;gap:18px;margin-bottom:22px;display:flex}.page-title{font-family:var(--font-sans);letter-spacing:-.02em;color:var(--fg-1);margin:0;font-size:22px;font-weight:600;line-height:1.15}.page-title em{color:var(--accent);font-style:normal}.page-sub{color:var(--fg-3);margin-top:6px;font-size:12.5px}.card{background:var(--bg-1);border:1px solid var(--border);border-radius:var(--r-md);padding:16px;position:relative}.card.tight{padding:12px 14px}.card-title{font-family:var(--font-sans);color:var(--fg-2);letter-spacing:-.005em;text-transform:none;align-items:center;gap:6px;margin:0 0 12px;font-size:11.5px;font-weight:600;display:flex}.card-title-row{justify-content:space-between;align-items:center;margin:0 0 12px;display:flex}.card-title-row .card-title{margin:0}.mono-eyebrow{font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--fg-3);font-size:10px;font-weight:500}.btn{border-radius:var(--r-sm);border:1px solid var(--border-strong);background:var(--bg-1);height:28px;color:var(--fg-1);cursor:pointer;white-space:nowrap;transition:background var(--dur-fast), border-color var(--dur-fast);font-size:12px;font-weight:500;font-family:var(--font-sans);letter-spacing:-.005em;align-items:center;gap:6px;padding:0 12px;display:inline-flex}.btn:hover{background:var(--bg-2);border-color:oklch(96% .008 80/.22)}.btn:active{transition:transform 60ms ease-out;transform:scale(.97)}.btn:disabled{opacity:.4;cursor:default}.btn-primary{background:var(--accent);color:var(--accent-fg);border-color:var(--accent);font-weight:600}.btn-primary:hover{background:var(--accent-hi);border-color:var(--accent-hi)}.btn-primary:active{background:var(--accent-lo);border-color:var(--accent-lo)}.btn-ghost{color:var(--fg-2);background:0 0;border-color:#0000}.btn-ghost:hover{background:var(--bg-2);color:var(--fg-1);border-color:#0000}.btn-sm{height:24px;padding:0 10px;font-size:11.5px}.btn-icon{border-radius:var(--r-xs);width:24px;height:24px;color:var(--fg-3);cursor:pointer;transition:background var(--dur-fast), color var(--dur-fast);background:0 0;border:0;place-items:center;font-size:13px;display:grid}.btn-icon:hover{background:var(--bg-3);color:var(--fg-1)}.badge{white-space:nowrap;font-size:10.5px;font-weight:600;font-family:var(--font-sans);letter-spacing:0;border-radius:100px;align-items:center;padding:1px 7px;display:inline-flex}.badge-green{background:var(--easy-bg);color:var(--easy)}.badge-yellow{background:var(--med-bg);color:var(--med)}.badge-red{background:var(--hard-bg);color:var(--hard)}.badge-blue{background:var(--bg-3);color:var(--fg-2)}.badge-purple{background:var(--accent-tint);color:var(--accent)}.badge-gray{background:var(--bg-2);color:var(--fg-3);border:1px solid var(--border)}.diff{font-family:var(--font-sans);letter-spacing:0;white-space:nowrap;align-items:center;padding:0;font-size:11px;font-weight:600;display:inline-flex;background:0 0!important}.diff-easy{color:var(--easy)}.diff-medium{color:var(--med)}.diff-hard{color:var(--hard)}.bar-track{background:var(--bg-3);border-radius:999px;height:3px;overflow:hidden}.bar-fill{background:var(--accent);transform-origin:0;height:100%;transition:transform var(--dur) var(--ease);border-radius:999px;width:100%}.diff-stack{background:var(--bg-3);border-radius:999px;height:4px;display:flex;overflow:hidden}.diff-stack span{height:100%;display:block}.s-easy{background:var(--easy)}.s-med{background:var(--med)}.s-hard{background:var(--hard)}.bar-row{grid-template-columns:100px 1fr 50px;align-items:center;gap:10px;padding:5px 0;font-size:12px;display:grid}.bar-row-name{color:var(--fg-1);white-space:nowrap;text-overflow:ellipsis;font-weight:500;overflow:hidden}.bar-row-val{font-family:var(--font-mono);color:var(--fg-3);text-align:right;font-variant-numeric:tabular-nums;font-size:10.5px}.plist-filters{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:14px;padding:8px 0;display:flex}.plist-filter-chip{border:1px solid var(--border);color:var(--fg-2);cursor:pointer;white-space:nowrap;transition:background var(--dur-fast), border-color var(--dur-fast), color var(--dur-fast);font-size:11.5px;font-weight:500;font-family:var(--font-sans);background:0 0;border-radius:100px;align-items:center;gap:6px;padding:4px 10px;display:inline-flex}.plist-filter-chip:hover{background:var(--bg-2);color:var(--fg-1);border-color:var(--border-strong)}.plist-filter-chip.active{background:var(--accent-tint-2);color:var(--accent);border-color:var(--accent)}.plist-filter-count{font-family:var(--font-mono);color:var(--fg-3);font-variant-numeric:tabular-nums;font-size:10px}.plist-filter-chip.active .plist-filter-count{color:var(--accent)}.plist-divider{background:var(--border);width:1px;height:18px;margin:0 4px}.plist-search{border:1px solid var(--border-strong);border-radius:var(--r-sm);background:var(--bg-1);flex:1;align-items:center;gap:8px;min-width:180px;max-width:320px;padding:6px 10px;display:flex}.plist-search svg{color:var(--fg-3);flex-shrink:0}.plist-search input{color:var(--fg-1);font-size:12px;font-family:var(--font-sans);background:0 0;border:0;outline:0;flex:1}.plist-search input::placeholder{color:var(--fg-4)}.plist{background:var(--bg-1);border:1px solid var(--border);border-radius:var(--r-md);overflow:hidden}.plist-header{background:var(--bg-2);border-bottom:1px solid var(--border);font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--fg-3);grid-template-columns:36px 36px 1fr 90px 140px 70px 36px;gap:8px;padding:8px 14px;font-size:10px;font-weight:500;display:grid}.plist-row{border-bottom:1px solid var(--border);color:var(--fg-1);cursor:pointer;transition:background var(--dur-fast);grid-template-columns:36px 36px 1fr 90px 140px 70px 36px;align-items:center;gap:8px;padding:9px 14px;font-size:12.5px;display:grid;position:relative}.plist-row:hover{background:var(--bg-2)}.plist-row:last-child{border-bottom:0}.plist-row.done .plist-title{color:var(--fg-3);text-decoration:line-through;-webkit-text-decoration-color:var(--fg-4);text-decoration-color:var(--fg-4)}.plist-num{font-family:var(--font-mono);color:var(--fg-4);font-variant-numeric:tabular-nums;font-size:11px}.plist-check{border-radius:var(--r-xs);border:1.5px solid var(--border-strong);cursor:pointer;width:16px;height:16px;transition:background var(--dur-fast), border-color var(--dur-fast);background:0 0;place-items:center;display:grid}.plist-check:hover{border-color:var(--fg-3)}.plist-check.checked{background:var(--easy);border-color:var(--easy)}.plist-check.checked:after{content:"";background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='black' stroke-width='2.5' stroke-linecap='round'><path d='M3 8l3 3 7-7'/></svg>");background-repeat:no-repeat;background-size:contain;width:8px;height:8px}.plist-title{color:var(--fg-1);text-overflow:ellipsis;white-space:nowrap;align-items:center;gap:8px;min-width:0;font-weight:500;display:flex;overflow:hidden}.plist-title a,.plist-title button{color:inherit;font:inherit;cursor:pointer;text-overflow:ellipsis;white-space:nowrap;text-align:left;background:0 0;border:0;flex:1;min-width:0;padding:0;text-decoration:none;overflow:hidden}.plist-title a:hover,.plist-title button:hover{color:var(--accent)}.plist-platform{object-fit:contain;opacity:.7;flex-shrink:0;width:14px;height:14px}.plist-topics{font-family:var(--font-mono);color:var(--fg-3);white-space:nowrap;text-overflow:ellipsis;font-size:10.5px;overflow:hidden}.plist-time{font-family:var(--font-mono);color:var(--fg-3);font-variant-numeric:tabular-nums;font-size:11px}.plist-actions{justify-content:flex-end;align-items:center;gap:2px;display:flex}.plist-revision-flag{background:var(--accent);border-radius:50%;width:6px;height:6px;position:absolute;top:50%;left:5px;transform:translateY(-50%)}.plist-empty{text-align:center;color:var(--fg-3);padding:60px 20px;font-size:13px}.plist-footer{border-top:1px solid var(--border);font-family:var(--font-mono);color:var(--fg-3);background:var(--bg-2);justify-content:space-between;align-items:center;padding:10px 14px;font-size:10.5px;display:flex}@media (width<=1100px){.plist-header,.plist-row{grid-template-columns:36px 36px 1fr 80px 90px 36px}.plist-time,.plist-header>:nth-child(6){display:none}}@media (width<=720px){.plist-header,.plist-row{grid-template-columns:30px 30px 1fr 70px 36px;padding:9px 12px}.plist-topics,.plist-header>:nth-child(5){display:none}}.workspace{z-index:800;background:var(--bg-0);grid-template-rows:44px 1fr;display:grid;position:fixed;inset:0}.ws-topbar{border-bottom:1px solid var(--border);background:var(--bg-1);flex-shrink:0;align-items:center;gap:12px;height:44px;padding:0 14px;display:flex}.ws-back{color:var(--fg-2);border-radius:var(--r-sm);cursor:pointer;transition:background var(--dur-fast), color var(--dur-fast);background:0 0;border:0;align-items:center;gap:6px;padding:4px 8px;font-size:12.5px;display:inline-flex}.ws-back:hover{background:var(--bg-2);color:var(--fg-1)}.ws-crumb{font-family:var(--font-mono);color:var(--fg-3);letter-spacing:.04em;font-size:11px}.ws-title{color:var(--fg-1);letter-spacing:-.005em;margin-left:4px;font-size:13.5px;font-weight:600}.ws-spacer{flex:1}.ws-action-group{align-items:center;gap:6px;display:flex}.ws-body{background:var(--bg-0);grid-template-columns:36% 1fr;display:grid;overflow:hidden}.ws-pane{background:var(--bg-0);flex-direction:column;min-width:0;min-height:0;display:flex;overflow:hidden}.ws-pane-problem{border-right:1px solid var(--border);background:var(--bg-1)}.ws-pane-right{grid-template-rows:1fr 240px;display:grid;overflow:hidden}.ws-section-bar{border-bottom:1px solid var(--border);background:var(--bg-1);font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--fg-3);flex-shrink:0;align-items:center;gap:12px;min-height:36px;padding:7px 14px;font-size:10.5px;display:flex}.ws-section-bar-title{align-items:center;gap:8px;display:inline-flex}.ws-section-bar-spacer{flex:1}.ws-pane-tests{border-top:1px solid var(--border);background:var(--bg-1)}.ws-pane-content{flex:1;min-width:0;min-height:0;padding:18px 22px 60px;overflow-y:auto}.prob-title{font-family:var(--font-sans);letter-spacing:-.015em;color:var(--fg-1);margin:0 0 8px;font-size:18px;font-weight:600}.prob-badges{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px;display:flex}.prob-header{margin-bottom:16px}.prob-gfg-link{color:var(--accent);font-size:11.5px;font-weight:500;text-decoration:none}.prob-gfg-link:hover{text-decoration:underline}.prob-section{margin-bottom:18px}.prob-section-title{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.12em;color:var(--fg-3);margin-bottom:8px;font-size:10px;font-weight:500}.prob-section-body,.prob-statement{color:var(--fg-2);font-size:13px;line-height:1.65}.prob-example{margin-bottom:14px}.prob-example-label{color:var(--fg-2);margin-bottom:6px;font-size:11.5px;font-weight:600}.prob-io-grid{grid-template-columns:1fr 1fr;gap:8px;display:grid}.prob-io-box{background:var(--bg-2);border-radius:var(--r-sm);border:1px solid var(--border);padding:8px 10px}.prob-io-label{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.1em;color:var(--fg-3);margin-bottom:4px;font-size:9.5px;font-weight:500}.prob-io-pre{font-family:var(--font-mono);white-space:pre-wrap;word-break:break-all;color:var(--fg-1);margin:0;font-size:11.5px}.prob-explanation{color:var(--fg-3);margin-top:6px;font-size:11.5px;line-height:1.5}.form-row{flex-wrap:wrap;gap:10px;display:flex}.form-group{flex-direction:column;flex:1;gap:5px;min-width:120px;display:flex}.form-label{font-family:var(--font-sans);color:var(--fg-2);font-size:11.5px;font-weight:500}input:not([type=checkbox]),select{background:var(--bg-1);border:1px solid var(--border-strong);border-radius:var(--r-sm);color:var(--fg-1);transition:border-color var(--dur-fast), box-shadow var(--dur-fast);outline:none;padding:7px 10px;font-family:inherit;font-size:12.5px}.form-group input:not([type=checkbox]),.form-group select,.form-row input:not([type=checkbox]),.form-row select{width:100%}input:not([type=checkbox]):focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-ring)}select option{background:var(--bg-2);color:var(--fg-1);font-size:13px}.notes-area,.note-input{background:var(--bg-1);border:1px solid var(--border-strong);border-radius:var(--r-sm);width:100%;color:var(--fg-1);font-family:var(--font-sans);resize:vertical;min-height:70px;transition:border-color var(--dur-fast);outline:none;padding:9px 11px;font-size:12.5px;line-height:1.5}.note-input{min-height:56px;font-size:12px}.notes-area:focus,.note-input:focus{border-color:var(--accent)}.modal-overlay{z-index:1000;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:oklch(0% 0 0/.55);justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal{background:var(--bg-1);border:1px solid var(--border-strong);border-radius:var(--r-lg);width:100%;max-width:440px;max-height:90vh;box-shadow:var(--shadow-lg);padding:22px;position:relative;overflow-y:auto}.modal-title{font-family:var(--font-sans);letter-spacing:-.015em;color:var(--fg-1);margin:0 0 16px;font-size:16px;font-weight:600}.modal-actions{justify-content:flex-end;gap:8px;margin-top:20px;display:flex}@media (prefers-reduced-motion:no-preference){@keyframes modal-overlay-in{0%{opacity:0}to{opacity:1}}@keyframes modal-overlay-out{0%{opacity:1}to{opacity:0}}@keyframes modal-in{0%{opacity:0;transform:translateY(10px)scale(.985)}to{opacity:1;transform:translateY(0)scale(1)}}@keyframes modal-out{0%{opacity:1;transform:translateY(0)scale(1)}to{opacity:0;transform:translateY(4px)scale(.99)}}.modal-overlay{animation:modal-overlay-in .14s var(--ease) both}.modal{animation:modal-in .2s var(--ease-sheet) both}.modal-overlay.closing{animation:modal-overlay-out .12s var(--ease) both}.modal-overlay.closing .modal{animation:modal-out .14s var(--ease) both}}.search-overlay{z-index:1100;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:oklch(0% 0 0/.55);justify-content:center;align-items:flex-start;padding-top:14vh;display:flex;position:fixed;inset:0}.search-modal{background:var(--bg-1);border:1px solid var(--border-strong);border-radius:var(--r-lg);width:100%;max-width:580px;box-shadow:var(--shadow-lg);margin:0 16px;overflow:hidden}@media (prefers-reduced-motion:no-preference){@keyframes search-in{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}@keyframes search-out{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-4px)}}.search-overlay{animation:modal-overlay-in .1s var(--ease) both}.search-modal{animation:search-in .16s var(--ease) both}.search-overlay.closing{animation:modal-overlay-out .1s var(--ease) both}.search-overlay.closing .search-modal{animation:search-out .12s var(--ease) both}}.search-input-wrap{border-bottom:1px solid var(--border);align-items:center;gap:10px;padding:12px 14px;display:flex}.search-icon{color:var(--fg-3);flex-shrink:0}.search-input{font-size:14px;font-family:var(--font-sans);color:var(--fg-1);caret-color:var(--accent);background:0 0;border:0;outline:0;flex:1}.search-input::placeholder{color:var(--fg-4)}.search-esc{font-family:var(--font-mono);border:1px solid var(--border-strong);background:var(--bg-2);color:var(--fg-3);cursor:pointer;border-radius:3px;padding:2px 7px;font-size:10px}.search-results{max-height:360px;padding:5px;overflow-y:auto}.search-result{border-radius:var(--r-sm);cursor:pointer;text-align:left;width:100%;transition:background var(--dur-fast);background:0 0;border:0;justify-content:space-between;align-items:center;gap:10px;padding:8px 12px;display:flex}.search-result.active,.search-result:hover{background:var(--bg-2)}.search-result-left{flex-direction:column;gap:2px;min-width:0;display:flex}.search-result-title{color:var(--fg-1);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:500;overflow:hidden}.search-result-step{color:var(--fg-3);font-size:10.5px;font-family:var(--font-mono)}.search-result-right{flex-shrink:0;align-items:center;gap:6px;display:flex}.search-result-done{color:var(--solved);font-size:10.5px;font-weight:700}.search-empty{text-align:center;color:var(--fg-3);padding:28px 16px;font-size:12.5px}.search-footer{border-top:1px solid var(--border);font-family:var(--font-mono);color:var(--fg-3);background:var(--bg-2);justify-content:space-between;align-items:center;padding:7px 14px;font-size:10px;display:flex}.platform-logo{object-fit:contain;opacity:.7;flex-shrink:0;width:14px;height:14px}.auth-overlay{z-index:1000;background:var(--bg-0);justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.auth-card{background:var(--bg-1);border:1px solid var(--border-strong);border-radius:var(--r-lg);box-shadow:var(--shadow-md);text-align:center;width:100%;max-width:340px;padding:32px 28px}.auth-oauth-btn{background:var(--bg-2);width:100%;color:var(--fg-1);border-radius:var(--r-sm);border:1px solid var(--border-strong);font-size:13px;font-weight:600;font-family:var(--font-sans);cursor:pointer;transition:background var(--dur-fast), border-color var(--dur-fast);justify-content:center;align-items:center;gap:8px;padding:10px 16px;text-decoration:none;display:inline-flex}.auth-oauth-btn:hover{background:var(--bg-3);border-color:oklch(96% .008 80/.2)}.mobile-nav{z-index:200;background:var(--bg-1);border-top:1px solid var(--border);padding:4px 0 env(safe-area-inset-bottom,4px);display:none;position:fixed;bottom:0;left:0;right:0}.mobile-nav-item{cursor:pointer;color:var(--fg-3);font-size:10px;font-weight:500;font-family:var(--font-sans);transition:color var(--dur-fast);background:0 0;border:0;flex-direction:column;flex:1;align-items:center;gap:2px;padding:7px 6px 5px;display:flex}.mobile-nav-item svg{flex-shrink:0;width:18px;height:18px}.mobile-nav-item.active{color:var(--accent)}.empty{text-align:center;color:var(--fg-3);padding:36px 20px;font-size:13px}.mt-4{margin-top:16px}.mt-6{margin-top:22px}.divider{background:var(--border);height:1px;margin:16px 0}.log-item,.milestone-item,.project-task{border-bottom:1px solid var(--border);align-items:center;gap:11px;padding:9px 0;font-size:12.5px;display:flex}.log-item:last-child,.milestone-item:last-child,.project-task:last-child{border-bottom:0}.log-date{color:var(--fg-4);white-space:nowrap;font-size:10.5px;font-family:var(--font-mono)}.log-note{color:var(--fg-2);flex:1}.log-count{white-space:nowrap;font-size:11px;font-family:var(--font-mono)}.btn-note{border-radius:var(--r-xs);cursor:pointer;width:22px;height:22px;color:var(--fg-4);transition:background var(--dur-fast), color var(--dur-fast);background:0 0;border:0;place-items:center;display:grid}.btn-note:hover{background:var(--bg-3);color:var(--fg-1)}.btn-note.has-note{color:var(--accent)}.code-modal{z-index:800;background:var(--bg-0);flex-direction:column;display:flex;position:fixed;inset:0}@media (prefers-reduced-motion:no-preference){@keyframes workspace-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.code-modal{animation:workspace-in .2s var(--ease) both}}.code-modal-header{border-bottom:1px solid var(--border);background:var(--bg-1);flex-shrink:0;justify-content:space-between;align-items:center;gap:12px;height:44px;padding:0 14px;display:flex}.code-modal-title{letter-spacing:-.005em;color:var(--fg-1);font-size:13.5px;font-weight:600}.code-modal-body{background:var(--bg-0);flex:1;grid-template-columns:36% 1fr;min-height:0;display:grid;overflow:hidden}.code-modal-desc{border-right:1px solid var(--border);color:var(--fg-2);background:var(--bg-1);padding:18px 22px;font-size:13px;line-height:1.65;overflow-y:auto}.code-modal-editor-wrap{background:var(--bg-0);flex-direction:column;min-height:0;padding:0;display:flex;overflow:hidden}.code-modal-toolbar{border-bottom:1px solid var(--border);background:var(--bg-1);flex-shrink:0;align-items:center;gap:8px;padding:8px 14px;display:flex}.code-lang-select{border-radius:var(--r-sm);border:1px solid var(--border-strong);background:var(--bg-2);width:auto;min-width:110px;max-width:160px;height:26px;color:var(--fg-1);cursor:pointer;appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23888' stroke-width='1.5' stroke-linecap='round'><path d='M4 6l4 4 4-4'/></svg>");background-position:right 8px center;background-repeat:no-repeat;background-size:12px;outline:none;padding:0 28px 0 10px;font-family:inherit;font-size:11.5px}.code-lang-select:focus{border-color:var(--accent)}.editor-root{background:var(--bg-0);min-height:0;font-family:var(--font-mono);flex-direction:column;flex:1;font-size:13px;line-height:1.55;display:flex;overflow:hidden}.editor-locked-section{background:var(--bg-1);flex-shrink:0;display:flex;position:relative}.editor-locked-section.editor-locked-top{border-bottom:1px solid var(--border)}.editor-locked-section.editor-locked-bottom{border-top:1px solid var(--border)}.editor-locked-badge{font-family:var(--font-mono);color:var(--fg-4);letter-spacing:.1em;text-transform:uppercase;pointer-events:none;background:var(--bg-2);border-radius:3px;padding:1px 6px;font-size:9.5px;font-weight:500;position:absolute;top:50%;right:10px;transform:translateY(-50%)}.editor-static-pre{font-family:var(--font-mono);color:var(--fg-3);white-space:pre;background:0 0;flex:1;min-width:0;margin:0;padding:6px 14px;font-size:12.5px;line-height:1.55;overflow:hidden}.editor-boilerplate-textarea{font-family:var(--font-mono);white-space:pre;tab-size:4;box-sizing:border-box;color:var(--fg-3);caret-color:var(--fg-1);resize:none;background:0 0;border:0;outline:0;flex:1;min-width:0;min-height:0;margin:0;padding:6px 80px 6px 14px;font-size:12.5px;line-height:1.55;overflow:hidden}.editor-body-section{background:var(--bg-0);flex:1;min-height:0;display:flex}.editor-gutter{text-align:right;background:var(--bg-0);color:var(--fg-4);font-family:var(--font-mono);-webkit-user-select:none;user-select:none;white-space:pre;border-right:1px solid var(--border);flex-shrink:0;min-width:44px;padding:12px 10px 12px 14px;font-size:12.5px;line-height:1.55;overflow:hidden}.editor-main{flex:1;position:relative;overflow:hidden}.editor-pre,.editor-textarea{font-family:var(--font-mono);white-space:pre;tab-size:4;box-sizing:border-box;border:0;outline:0;margin:0;padding:12px 16px;font-size:12.5px;line-height:1.55;position:absolute;inset:0}.editor-pre{color:var(--fg-1);pointer-events:none;z-index:0;background:0 0;overflow:hidden}.editor-textarea{color:#0000;caret-color:var(--fg-1);-webkit-text-fill-color:transparent;resize:none;z-index:1;background:0 0;overflow:auto}.hl-k{color:oklch(78% .13 270)}.hl-b{color:oklch(80% .13 195)}.hl-s{color:oklch(80% .14 30)}.hl-c{color:oklch(62% .1 145);font-style:italic}.hl-n{color:oklch(78% .13 145)}.hl-f{color:oklch(86% .1 80)}.hl-pp{color:oklch(78% .18 320)}.hl-op{color:var(--fg-2)}.code-output-wrap{background:var(--bg-1);border:0;border-top:1px solid var(--border);border-radius:0;flex-shrink:0;max-height:160px;padding:10px 14px;overflow-y:auto}.code-output-label{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.1em;color:var(--fg-3);margin-bottom:6px;font-size:9.5px;font-weight:500}#code-output-pre{font-family:var(--font-mono);white-space:pre-wrap;word-break:break-all;color:var(--fg-1);margin:0;font-size:11.5px}.test-cases-wrap{border-top:1px solid var(--border);background:var(--bg-1);flex-direction:column;flex-shrink:0;gap:8px;max-height:240px;padding:10px 14px;display:flex;overflow-y:auto}.test-cases-bar{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.test-tab{font-size:10.5px;font-weight:500;font-family:var(--font-sans);border:1px solid var(--border-strong);background:var(--bg-2);color:var(--fg-2);cursor:pointer;transition:border-color var(--dur-fast), color var(--dur-fast);border-radius:100px;align-items:center;gap:4px;padding:3px 9px;display:inline-flex}.test-tab:hover{color:var(--fg-1);border-color:oklch(96% .008 80/.2)}.test-tab.active{background:var(--bg-3);border-color:var(--accent);color:var(--fg-1)}.test-tab.tc-pass{border-color:var(--easy);color:var(--easy)}.test-tab.tc-fail{border-color:var(--hard);color:var(--hard)}.test-tab.tc-error{border-color:var(--med);color:var(--med)}.tc-icon{font-size:9.5px;font-weight:700}.pass-icon{color:var(--easy)}.fail-icon{color:var(--hard)}.err-icon{color:var(--med)}.test-tab-add{font-size:13px;font-weight:600;font-family:var(--font-sans);border:1px dashed var(--border-strong);color:var(--fg-3);cursor:pointer;background:0 0;border-radius:100px;padding:3px 9px;line-height:1}.test-tab-add:hover{border-color:var(--accent);color:var(--accent)}.test-io-grid{grid-template-columns:1fr 1fr;gap:8px;display:grid}.verdict-wrap{background:var(--bg-2);border:1px solid var(--border-strong);border-radius:var(--r-sm);flex-direction:column;gap:5px;padding:8px 11px;display:flex}.verdict-wrap.tc-pass{border-color:var(--easy);background:var(--easy-bg)}.verdict-wrap.tc-fail{border-color:var(--hard);background:var(--hard-bg)}.verdict-wrap.tc-error{border-color:var(--med);background:var(--med-bg)}.verdict-top{justify-content:space-between;align-items:center;gap:8px;display:flex}.verdict-badge{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.08em;font-size:10px;font-weight:600}.tc-pass .verdict-badge{color:var(--easy)}.tc-fail .verdict-badge{color:var(--hard)}.tc-error .verdict-badge{color:var(--med)}.tc-run .verdict-badge{color:var(--fg-3)}.ask-mentor-btn{font-size:10.5px;font-weight:500;font-family:var(--font-sans);border-radius:var(--r-xs);border:1px solid var(--border-strong);background:var(--bg-1);color:var(--fg-2);cursor:pointer;transition:background var(--dur-fast), color var(--dur-fast), border-color var(--dur-fast);padding:3px 8px}.ask-mentor-btn:hover{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}.verdict-pre{font-family:var(--font-mono);white-space:pre-wrap;word-break:break-all;color:var(--fg-1);margin:0;font-size:11px}.mpanel-btn{border-radius:var(--r-xs);font-size:11px;font-weight:500;font-family:var(--font-sans);border:1px solid var(--border-strong);color:var(--fg-2);cursor:pointer;transition:background var(--dur-fast), color var(--dur-fast), border-color var(--dur-fast);background:0 0;padding:3px 9px}.mpanel-btn.active{background:var(--accent);border-color:var(--accent);color:var(--accent-fg)}.stdin-wrap{flex-direction:column;flex-shrink:0;gap:4px;display:flex}.stdin-label{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.1em;color:var(--fg-3);font-size:9.5px;font-weight:500}.stdin-textarea{font-family:var(--font-mono);color:var(--fg-1);background:var(--bg-1);border:1px solid var(--border-strong);border-radius:var(--r-sm);resize:none;height:50px;transition:border-color var(--dur-fast);outline:0;padding:6px 10px;font-size:11.5px;line-height:1.5}.stdin-textarea:focus{border-color:var(--accent)}.left-panel-tabs{border-bottom:1px solid var(--border);background:var(--bg-1);flex-shrink:0;gap:0;padding:0 14px;display:flex}.left-tab{color:var(--fg-3);cursor:pointer;transition:color var(--dur-fast), border-color var(--dur-fast);font-size:12px;font-weight:500;font-family:var(--font-sans);background:0 0;border:0;border-bottom:2px solid #0000;margin-bottom:-1px;padding:8px 12px}.left-tab:hover{color:var(--fg-1)}.left-tab.active{color:var(--fg-1);border-bottom-color:var(--accent)}.mentor-panel{flex-direction:column;flex:1;min-height:0;padding:0;display:flex;overflow:hidden}.mentor-intro{flex-shrink:0;padding:14px 18px 10px}.mentor-intro-title{color:var(--fg-1);margin-bottom:2px;font-size:13px;font-weight:600}.mentor-intro-sub{color:var(--fg-3);font-size:11.5px;line-height:1.4}.mentor-messages{flex-direction:column;flex:1;gap:10px;padding:6px 14px 10px;display:flex;overflow-y:auto}.mentor-msg{flex-direction:column;gap:3px;display:flex}.mentor-msg-label{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.1em;color:var(--fg-4);font-size:9.5px;font-weight:600}.mentor-msg-label.you{color:var(--accent)}.mentor-msg-body{color:var(--fg-1);white-space:pre-wrap;word-break:break-word;font-size:12.5px;line-height:1.6}.mentor-msg-assistant .mentor-msg-body{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--r-sm);padding:8px 12px}.mentor-msg-user .mentor-msg-body{color:var(--fg-2);font-style:italic}.mentor-cursor{background:var(--accent);vertical-align:middle;border-radius:1px;width:6px;height:13px;display:inline-block}@media (prefers-reduced-motion:no-preference){@keyframes mentor-blink{50%{opacity:0}}.mentor-cursor{animation:1s step-end infinite mentor-blink}}.mentor-quick-btns{border-top:1px solid var(--border);flex-wrap:wrap;flex-shrink:0;gap:6px;padding:8px 14px;display:flex}.mentor-quick-btn{border-radius:var(--r-xs);border:1px solid var(--border-strong);background:var(--bg-2);color:var(--fg-2);cursor:pointer;font-size:11px;font-weight:500;font-family:var(--font-sans);transition:border-color var(--dur-fast), color var(--dur-fast);padding:4px 10px}.mentor-quick-btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.mentor-quick-btn:disabled{opacity:.4;cursor:default}.mentor-input-row{flex-shrink:0;align-items:flex-end;gap:8px;padding:10px 14px 14px;display:flex}.mentor-input{font-family:var(--font-sans);background:var(--bg-2);border:1px solid var(--border-strong);border-radius:var(--r-sm);resize:none;color:var(--fg-1);transition:border-color var(--dur-fast);outline:0;flex:1;padding:7px 10px;font-size:12px;line-height:1.4}.mentor-input:focus{border-color:var(--accent)}.mentor-input:disabled{opacity:.5}.mentor-send-btn{border-radius:var(--r-sm);background:var(--accent);width:30px;height:30px;color:var(--accent-fg);cursor:pointer;transition:background var(--dur-fast);border:0;flex-shrink:0;place-items:center;font-size:15px;font-weight:700;display:grid}.mentor-send-btn:hover:not(:disabled){background:var(--accent-hi)}.mentor-send-btn:active{transition:transform 60ms ease-out;transform:scale(.96)}.mentor-send-btn:disabled{opacity:.35;cursor:default}.mentor-code-block{border-radius:var(--r-sm);border:1px solid var(--border);margin:6px 0;overflow:hidden}.mentor-code-header{background:var(--bg-2);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:5px 10px;display:flex}.mentor-code-lang{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.08em;color:var(--fg-3);font-size:9.5px;font-weight:600}.mentor-code-send{color:var(--accent);cursor:pointer;font-size:10.5px;font-weight:500;font-family:var(--font-sans);background:0 0;border:0;padding:0}.mentor-code-send:hover{color:var(--accent-hi)}.mentor-code-pre{font-family:var(--font-mono);background:var(--bg-1);color:var(--fg-1);white-space:pre;margin:0;padding:10px 12px;font-size:11.5px;line-height:1.55;overflow-x:auto}.mentor-new-chat-btn,.mentor-gear-btn{color:var(--fg-3);background:var(--bg-2);border:1px solid var(--border-strong);border-radius:var(--r-xs);cursor:pointer;font-size:10px;font-weight:500;font-family:var(--font-sans);transition:color var(--dur-fast), border-color var(--dur-fast);padding:3px 8px}.mentor-new-chat-btn:hover,.mentor-gear-btn:hover,.mentor-gear-btn.active{color:var(--accent);border-color:var(--accent)}.mentor-gear-btn{align-items:center;gap:4px;display:flex}.mentor-settings-panel{background:var(--bg-2);border:1px solid var(--border-strong);border-radius:var(--r-sm);margin-top:10px;padding:12px 14px;transition:border-color .3s}@media (prefers-reduced-motion:no-preference){@keyframes mentor-verified{0%{box-shadow:0 0 oklch(74% .16 165/.5)}to{box-shadow:0 0 0 12px oklch(74% .16 165/0)}}.mentor-settings-panel.verified{animation:.32s cubic-bezier(.22,1,.36,1) both mentor-verified}}.mentor-settings-panel.verified{border-color:var(--solved)}.mentor-settings-label{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.1em;color:var(--fg-3);margin-bottom:6px;font-size:9.5px;font-weight:600}.mentor-key-hint{text-transform:none;letter-spacing:0;color:var(--fg-4);font-weight:400}.mentor-provider-pills{flex-wrap:wrap;gap:6px;display:flex}.mentor-provider-pill{border-radius:var(--r-xs);border:1px solid var(--border-strong);background:var(--bg-1);color:var(--fg-2);cursor:pointer;font-size:11px;font-weight:500;font-family:var(--font-sans);transition:border-color var(--dur-fast), color var(--dur-fast);align-items:center;gap:5px;padding:4px 10px;display:flex}.mentor-provider-pill:hover{border-color:var(--accent);color:var(--accent)}.mentor-provider-pill.active{border-color:var(--accent);background:var(--accent);color:var(--accent-fg)}.mentor-provider-badge{font-family:var(--font-mono);background:var(--bg-3);text-transform:uppercase;letter-spacing:.06em;color:var(--fg-3);border-radius:8px;padding:1px 5px;font-size:8.5px;font-weight:700}.mentor-provider-pill.active .mentor-provider-badge{color:var(--accent-fg);background:oklch(0% 0 0/.18)}.mentor-key-input,.mentor-model-select{width:100%;font-size:11.5px;font-family:var(--font-mono);background:var(--bg-1);border:1px solid var(--border-strong);border-radius:var(--r-sm);color:var(--fg-1);transition:border-color var(--dur-fast);outline:0;padding:7px 10px}.mentor-model-select{font-family:var(--font-sans);cursor:pointer}.mentor-key-input:focus,.mentor-model-select:focus{border-color:var(--accent)}.mentor-key-warning{color:var(--alarm);margin-top:8px;font-size:11px;font-weight:500}.mentor-test-btn{border-radius:var(--r-sm);height:30px;font-size:11.5px;font-weight:600;font-family:var(--font-sans);border:1px solid var(--border-strong);background:var(--bg-1);color:var(--fg-2);cursor:pointer;transition:border-color var(--dur-fast), color var(--dur-fast);white-space:nowrap;flex-shrink:0;padding:0 12px}.mentor-test-btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.mentor-test-btn:disabled{opacity:.5;cursor:default}.mentor-test-btn.ok{border-color:var(--solved);color:var(--solved);background:var(--solved-bg)}.mentor-test-btn.err{border-color:var(--alarm);color:var(--alarm);background:var(--alarm-bg)}.mentor-test-msg{margin-top:5px;font-size:11px;font-weight:500}.mentor-test-msg.ok{color:var(--solved)}.mentor-test-msg.err{color:var(--alarm)}.career-upload-card{background:var(--bg-1);border:1px solid var(--border);border-radius:var(--r-md);flex-direction:column;padding:16px;display:flex}.career-role-chip{border:1px solid var(--border);color:var(--fg-2);cursor:pointer;transition:background var(--dur-fast), color var(--dur-fast), border-color var(--dur-fast);background:0 0;border-radius:100px;padding:4px 11px;font-size:11.5px;font-weight:500}.career-role-chip:hover{border-color:var(--border-strong);color:var(--fg-1)}.career-role-chip.active{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}.career-mode-tabs{background:var(--bg-2);border-radius:var(--r-sm);border:1px solid var(--border);gap:2px;padding:2px;display:flex}.career-mode-tab{cursor:pointer;color:var(--fg-3);transition:background var(--dur-fast), color var(--dur-fast);font-size:11px;font-weight:500;font-family:var(--font-sans);background:0 0;border:0;border-radius:3px;padding:3px 10px}.career-mode-tab.active{background:var(--bg-1);color:var(--fg-1);box-shadow:var(--shadow-sm)}.career-upload-zone{border:1.5px dashed var(--border-strong);border-radius:var(--r-sm);min-height:180px;transition:border-color var(--dur-fast), background var(--dur-fast);background:var(--bg-0);cursor:default;flex:1;justify-content:center;align-items:center;display:flex}.career-upload-zone.drag-over{border-color:var(--accent);background:var(--accent-tint)}.career-upload-prompt{color:var(--fg-3);flex-direction:column;align-items:center;padding:20px;display:flex}.career-file-selected{align-items:center;gap:10px;width:100%;padding:0 20px;display:flex}.career-file-clear{cursor:pointer;color:var(--fg-4);border-radius:var(--r-xs);background:0 0;border:0;flex-shrink:0;padding:2px 5px;font-size:13px}.career-file-clear:hover{color:var(--fg-1);background:var(--bg-2)}.career-grid{grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px;display:grid}.career-input-panel{flex-direction:column;gap:5px;display:flex}.career-textarea{min-height:200px;font-family:var(--font-mono);border-radius:var(--r-sm);border:1px solid var(--border-strong);background:var(--bg-1);color:var(--fg-1);resize:vertical;flex:1;padding:10px 12px;font-size:11.5px;line-height:1.55}.career-jd-textarea{min-height:130px}.career-role-input{border-radius:var(--r-sm);border:1px solid var(--border-strong);background:var(--bg-1);color:var(--fg-1);padding:7px 10px;font-size:12.5px}.career-actions{gap:8px;margin-bottom:20px;display:flex}.career-loading{color:var(--fg-3);align-items:center;gap:10px;padding:22px 0;font-size:12.5px;display:flex}.career-spinner{border:2px solid var(--border-strong);border-top-color:var(--accent);border-radius:50%;width:13px;height:13px;display:inline-block}@media (prefers-reduced-motion:no-preference){@keyframes career-spin{to{transform:rotate(360deg)}}.career-spinner{animation:.7s linear infinite career-spin}}.career-error{background:var(--alarm-bg);border:1px solid var(--alarm);border-radius:var(--r-sm);color:var(--fg-1);padding:12px 14px;font-size:12.5px}.career-results-grid{grid-template-columns:200px 1fr;gap:12px;display:grid}.career-result-card{background:var(--bg-1);border:1px solid var(--border);border-radius:var(--r-md);padding:14px}.career-full-width{grid-column:1/-1}.career-score-card{flex-direction:column;justify-content:center;align-items:flex-start;gap:6px;display:flex}.career-score-label{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.12em;color:var(--fg-3);font-size:9.5px;font-weight:600}.career-score-value{font-family:var(--font-sans);letter-spacing:-.025em;font-variant-numeric:tabular-nums;color:var(--accent);font-size:32px;font-weight:700;line-height:1}.career-score-high{color:var(--easy)}.career-score-mid{color:var(--med)}.career-score-low{color:var(--hard)}.career-score-sub{font-family:var(--font-mono);color:var(--fg-3);letter-spacing:.04em;font-size:10.5px}.career-summary-text{color:var(--fg-2);margin:8px 0 0;font-size:12px;line-height:1.55}.career-card-title{font-family:var(--font-sans);color:var(--fg-2);margin-bottom:8px;font-size:11.5px;font-weight:600}.career-chips{flex-wrap:wrap;gap:6px;display:flex}.career-chip{font-size:11px;font-weight:500;font-family:var(--font-sans);border-radius:100px;padding:2px 8px}.chip-green{background:var(--easy-bg);color:var(--easy)}.chip-red{background:var(--hard-bg);color:var(--hard)}.career-list{color:var(--fg-2);margin:0;padding-left:16px;font-size:12.5px;line-height:1.55}.career-list li{margin-bottom:5px}.career-list-bullets li::marker{color:var(--accent)}.career-resume-preview{font-family:var(--font-mono);background:var(--bg-0);border:1px solid var(--border);border-radius:var(--r-sm);white-space:pre-wrap;word-break:break-word;color:var(--fg-1);max-height:400px;padding:14px;font-size:11px;line-height:1.55;overflow:auto}.career-latex-area{width:100%;min-height:280px;max-height:500px;font-family:var(--font-mono);background:var(--bg-1);border:1px solid var(--border-strong);border-radius:var(--r-sm);color:var(--fg-1);resize:vertical;box-sizing:border-box;padding:12px;font-size:11px;line-height:1.55}.compare-split{border:1px solid var(--border);border-radius:var(--r-sm);grid-template-columns:1fr 1fr;height:600px;display:grid;overflow:hidden}.compare-pane{background:var(--bg-1);padding:12px;overflow-y:auto}.compare-pane-upgraded{border-left:1px solid var(--border);background:var(--bg-2)}.compare-pane-label{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.1em;color:var(--fg-3);border-bottom:1px solid var(--border);margin-bottom:10px;padding-bottom:6px;font-size:9.5px;font-weight:600}.compare-pane canvas{box-shadow:var(--shadow-sm);border-radius:3px;margin-bottom:10px;display:block;width:100%!important;height:auto!important}.compare-text-pre{font-family:var(--font-mono);white-space:pre-wrap;color:var(--fg-2);margin:0;font-size:10px;line-height:1.55}.overleaf-paper{color:#000;background:#fff;min-height:100%;padding:14px 18px;font-family:Times New Roman,Times,serif;font-size:10.5pt;line-height:1.42}.overleaf-name{text-align:center;letter-spacing:-.01em;margin:0 0 4px;font-size:21pt;font-weight:700}.overleaf-contact{text-align:center;color:#444;margin-bottom:6px;font-size:8pt}.overleaf-sec-title{font-variant:small-caps;letter-spacing:.03em;margin:10px 0 0;font-size:10.5pt;font-weight:700}.overleaf-rule{border:0;border-top:1px solid #000;margin:1px 0 5px}.overleaf-summary{margin:0 0 6px;font-size:9.5pt;line-height:1.45}.overleaf-entry-row{justify-content:space-between;align-items:baseline;margin-top:4px;font-size:10pt;font-weight:700;display:flex}.overleaf-entry-sub{justify-content:space-between;align-items:baseline;margin-bottom:2px;font-size:9pt;font-style:italic;display:flex}.overleaf-list{margin:2px 0 4px;padding-left:18px;font-size:9.5pt}.overleaf-list li{margin-bottom:1px;line-height:1.4}.overleaf-skill-row{margin-bottom:2px;font-size:9.5pt}.gfg-loading{color:var(--fg-4);padding:18px 0;font-size:12px}.gfg-desc{color:var(--fg-1);font-size:13px;line-height:1.6}.gfg-desc p{margin:0 0 11px}.gfg-desc pre{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--r-xs);font-family:var(--font-mono);white-space:pre-wrap;margin:0 0 10px;padding:10px 12px;font-size:12px}.gfg-desc code{font-family:var(--font-mono);background:var(--bg-2);border-radius:var(--r-xs);padding:1px 4px;font-size:11.5px}.gfg-desc strong{font-weight:600}.gfg-desc blockquote{background:var(--accent-tint);border-left:2px solid var(--accent);border-radius:var(--r-xs);margin:0 0 11px;padding:6px 11px}.gfg-desc sup{font-size:9.5px}.gfg-desc ul,.gfg-desc ol{margin:0 0 11px;padding-left:18px}.gfg-desc li{margin-bottom:4px}.app-table{border-collapse:collapse;width:100%}.app-table th{text-align:left;font-family:var(--font-mono);color:var(--fg-3);text-transform:uppercase;letter-spacing:.12em;border-bottom:1px solid var(--border);white-space:nowrap;background:var(--bg-2);padding:9px 12px;font-size:9.5px;font-weight:500}.app-table td{border-bottom:1px solid var(--border);vertical-align:middle;color:var(--fg-1);padding:10px 12px;font-size:12.5px}.app-table tr:hover td{background:var(--bg-2)}.topic-grid,.step-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;display:grid}.topic-card,.step-card,.substep-card{background:var(--bg-1);border:1px solid var(--border);border-radius:var(--r-md);cursor:pointer;text-align:left;width:100%;font:inherit;color:inherit;transition:background var(--dur-fast), border-color var(--dur-fast);padding:14px}.topic-card:hover,.step-card:hover,.substep-card:hover{background:var(--bg-2);border-color:var(--border-strong)}.substep-list{flex-direction:column;gap:6px;display:flex}.detail-header{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:12px;margin-bottom:20px;display:flex}.detail-stats{flex-wrap:wrap;gap:20px;display:flex}.detail-stat{flex-direction:column;align-items:center;gap:2px;display:flex}.detail-stat-val{font-family:var(--font-sans);letter-spacing:-.02em;color:var(--fg-1);font-variant-numeric:tabular-nums;font-size:18px;font-weight:600;line-height:1}.detail-stat-label{color:var(--fg-3);font-size:10.5px;font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.1em}.prob-editor-btn{cursor:pointer;color:var(--fg-1);text-align:left;transition:color var(--dur-fast);background:0 0;border:0;align-items:center;padding:0;font-family:inherit;font-size:12.5px;font-weight:500;line-height:1.4;display:inline-flex}.prob-editor-btn:hover{color:var(--accent)}.prob-editor-btn.done{color:var(--fg-3);text-decoration:line-through}.editor-hint{font-family:var(--font-mono);letter-spacing:.04em;color:var(--fg-4);margin-left:8px;font-size:9.5px;font-weight:500}.ptable{border-collapse:separate;border-spacing:0;width:100%;font-size:12.5px}.ptable th{text-align:left;font-family:var(--font-mono);color:var(--fg-3);letter-spacing:.12em;text-transform:uppercase;border-bottom:1px solid var(--border);padding:0 10px 11px;font-size:9.5px;font-weight:500}.ptable td{border-bottom:1px solid var(--border);vertical-align:middle;padding:9px 10px}.ptable tr.row:hover td{background:var(--bg-2)}.ptable tr:last-child td{border-bottom:0}@keyframes row-flash{0%{background:0 0}20%{background:var(--accent-tint)}60%{background:var(--accent-tint)}to{background:0 0}}.ptable tr.row-flash td{animation:.6s ease-out forwards row-flash}.ptable .num{font-family:var(--font-mono);color:var(--fg-4);font-variant-numeric:tabular-nums;font-size:10.5px}.prob-link{color:var(--fg-1);transition:color var(--dur-fast);align-items:center;font-weight:500;text-decoration:none;display:inline-flex}.prob-link:hover{color:var(--accent)}.prob-link.done{color:var(--fg-3);text-decoration:line-through}.prob-cb{width:15px;height:15px;accent-color:var(--accent);cursor:pointer}@media (width<=900px){html,body{height:100%;overflow:hidden}.app{grid-template-columns:1fr}.sidebar{display:none}.mobile-nav{display:flex}.content{padding-top:18px;padding-left:16px;padding-right:16px;padding-bottom:70px!important}.topbar{padding:0 14px}.ws-body{grid-template-rows:1fr;grid-template-columns:1fr}.ws-pane-problem{display:none}.ws-pane-right{grid-template-rows:1fr 200px}.career-grid,.career-results-grid{grid-template-columns:1fr}.compare-split{grid-template-columns:1fr;height:auto}.compare-pane{height:380px}.compare-pane-upgraded{border-left:0;border-top:1px solid var(--border)}}@media (width>=901px){.mobile-panel-toggle{display:none}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}