@font-face{font-family:Inter;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/inter-400-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/inter-400-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Inter;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/inter-500-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/inter-500-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Inter;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/inter-600-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/inter-600-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Inter;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/inter-700-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/inter-700-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Inter;font-style:normal;font-weight:800;font-display:swap;src:url(/fonts/inter-800-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter;font-style:normal;font-weight:800;font-display:swap;src:url(/fonts/inter-800-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Space Grotesk;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/space-grotesk-400-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Space Grotesk;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/space-grotesk-400-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Space Grotesk;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/space-grotesk-500-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Space Grotesk;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/space-grotesk-500-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Space Grotesk;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/space-grotesk-600-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Space Grotesk;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/space-grotesk-600-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Space Grotesk;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/space-grotesk-700-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Space Grotesk;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/space-grotesk-700-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--bg: #07060f;--bg-2: #0c0a1a;--bg-soft: #16132c;--surface: #15122a;--surface-2: #1c1838;--surface-glass: rgba(28, 24, 54, .55);--ink: #ecebf8;--ink-soft: #b4aed1;--ink-faint: #7f789f;--line: rgba(255, 255, 255, .1);--line-strong: rgba(255, 255, 255, .18);--brand: #8b5cf6;--brand-deep: #7c3aed;--brand-bright: #a78bfa;--brand-soft: rgba(139, 92, 246, .16);--brand-2: #4f7bff;--accent: #d946ef;--success: #22c55e;--success-deep: #16a34a;--success-bright: #4ade80;--success-soft: rgba(34, 197, 94, .16);--brand-ink: var(--brand-bright);--brand2-ink: var(--brand-2);--success-ink: var(--success-bright);--warn: #f5a524;--warn-soft: rgba(245, 165, 36, .16);--danger: #f06767;--danger-soft: rgba(240, 103, 103, .16);--insight: #c084fc;--insight-soft: rgba(192, 132, 252, .16);--gem: #34d399;--xp: #a78bfa;--grad-brand: linear-gradient( 118deg, var(--brand) 0%, color-mix(in srgb, var(--brand) 46%, var(--brand-2)) 55%, var(--brand-2) 100% );--grad-success: linear-gradient(118deg, var(--success) 0%, #34d399 100%);--radius: 16px;--radius-sm: 10px;--radius-lg: 22px;--radius-pill: 999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4), 0 4px 16px rgba(0, 0, 0, .32);--shadow-md: 0 12px 32px rgba(0, 0, 0, .45);--shadow-lg: 0 28px 64px rgba(0, 0, 0, .55);--glow-brand: 0 0 32px rgba(139, 92, 246, .45);--glow-success: 0 0 28px rgba(34, 197, 94, .5);--font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-display: "Space Grotesk", var(--font);--maxw: 760px;--maxw-wide: 1280px}:root[data-theme=light]{--bg: #f1edfb;--bg-2: #e9e4f7;--bg-soft: #ece7f8;--surface: #ffffff;--surface-2: #f7f5fd;--surface-glass: rgba(255, 255, 255, .72);--ink: #1a1533;--ink-soft: #5a5478;--ink-faint: #6f698f;--line: #e6e1f3;--line-strong: #d3cdea;--brand: #7c5cff;--brand-deep: #6b46e5;--brand-bright: #8b5cf6;--brand-soft: rgba(124, 92, 255, .12);--brand-2: #4f7bff;--accent: #c026d3;--success: #16a34a;--success-deep: #15803d;--success-bright: #22c55e;--success-soft: rgba(22, 163, 74, .12);--brand-ink: var(--brand-deep);--brand2-ink: #3f63e0;--success-ink: var(--success-deep);--warn: #d98a13;--warn-soft: #fdf1dc;--danger: #e35d5d;--danger-soft: #fdeeee;--insight: #8b3ff0;--insight-soft: rgba(139, 63, 240, .1);--gem: #0c9268;--xp: #7c5cff;--shadow-sm: 0 1px 2px rgba(30, 20, 70, .06), 0 6px 20px rgba(30, 20, 70, .08);--shadow-md: 0 12px 34px rgba(30, 20, 70, .12);--shadow-lg: 0 26px 60px rgba(30, 20, 70, .16);--glow-brand: 0 8px 26px rgba(124, 92, 255, .3);--glow-success: 0 8px 24px rgba(22, 163, 74, .28)}*{box-sizing:border-box}html,body,#root{height:100%}html{background:var(--bg)}body{margin:0;font-family:var(--font);color:var(--ink);background:radial-gradient(1100px 720px at 80% -10%,rgba(124,58,237,.32),transparent 60%),radial-gradient(900px 640px at 6% 8%,rgba(79,123,255,.18),transparent 55%),var(--bg);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;line-height:1.55}:root[data-theme=light] body{background:radial-gradient(1100px 720px at 80% -10%,rgba(124,92,255,.18),transparent 60%),radial-gradient(900px 640px at 6% 8%,rgba(79,123,255,.12),transparent 55%),var(--bg)}button{font-family:inherit;cursor:pointer;color:inherit;-webkit-tap-highlight-color:transparent}button:disabled{cursor:not-allowed}h1,h2,h3,h4{font-family:var(--font-display);letter-spacing:-.01em}:focus-visible{outline:2px solid var(--brand-bright);outline-offset:2px}textarea.answer:focus-visible{outline:none}::selection{background:color-mix(in srgb,var(--brand) 34%,transparent);color:var(--ink)}.pando-mascot{display:block;width:var(--pando-size);height:var(--pando-size);object-fit:contain;flex:none;filter:drop-shadow(0 0 18px rgba(34,211,238,.18)) drop-shadow(0 16px 30px rgba(124,58,237,.28));animation:pando-float 4.8s ease-in-out infinite;will-change:transform}@media(hover:none),(pointer:coarse),(max-width:640px){.pando-mascot{animation:none;will-change:auto}}.pando-mascot.is-avatar{animation:none;will-change:auto;border-radius:18px}.lesson-companion,.pando-nudge{display:flex;align-items:center;gap:12px;margin-top:16px;padding:12px 14px;border:1px solid color-mix(in srgb,var(--brand) 24%,transparent);border-radius:var(--radius-sm);background:radial-gradient(140% 120% at 0% 0%,rgba(34,211,238,.1),transparent 54%),var(--surface-2);color:var(--ink-soft);text-align:left}.lesson-companion strong,.pando-nudge strong{color:var(--brand-ink)}.result-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:18px auto 0;max-width:560px}.result-stat{padding:12px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface-2)}.result-stat span{display:block;color:var(--ink-faint);font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.result-stat strong{display:block;margin-top:4px;font-family:var(--font-display);font-size:1rem;line-height:1.2}@keyframes pando-float{0%,to{transform:translateY(0)}50%{transform:translateY(-5px)}}*{scrollbar-width:thin;scrollbar-color:var(--line-strong) transparent}::-webkit-scrollbar{width:11px;height:11px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:var(--radius-pill);border:3px solid transparent;background-clip:padding-box}::-webkit-scrollbar-thumb:hover{background:var(--ink-faint);background-clip:padding-box}.app{min-height:100%;display:flex;flex-direction:column}.app-header{position:sticky;top:0;z-index:10;background:var(--surface-glass);-webkit-backdrop-filter:saturate(140%) blur(12px);backdrop-filter:saturate(140%) blur(12px);border-bottom:1px solid var(--line)}.app-header-inner{max-width:var(--maxw);margin:0 auto;padding:14px 20px;display:flex;align-items:center;gap:14px}.brand-mark{display:inline-flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.01em;color:var(--ink);background:none;border:none;padding:0;font-size:1.05rem}.brand-dot{width:22px;height:22px;border-radius:7px;background:linear-gradient(135deg,var(--brand) 0%,#6ea0ff 100%);box-shadow:0 2px 8px #3b6ef666}.header-spacer{flex:1}.header-progress{display:flex;align-items:center;gap:10px;font-size:.85rem;color:var(--ink-soft)}.header-theme{margin-left:14px;display:grid;place-items:center;width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:var(--surface-glass);color:var(--ink-soft);transition:color .15s ease,border-color .15s ease}.header-theme:hover{color:var(--brand-bright);border-color:var(--brand)}.main{flex:1;width:100%;max-width:var(--maxw);margin:0 auto;padding:28px 20px 80px}.app-footer{text-align:center;color:var(--ink-faint);font-size:.8rem;padding:24px 20px 40px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--radius-sm);padding:11px 20px;min-height:42px;font-size:.95rem;font-weight:600;letter-spacing:.01em;-webkit-user-select:none;user-select:none;transition:transform .16s cubic-bezier(.34,1.3,.64,1),box-shadow .18s ease,background-color .16s ease,border-color .16s ease,color .16s ease,filter .16s ease}.btn:disabled{opacity:.55;filter:saturate(.5);box-shadow:none}.btn:focus-visible{outline:none;box-shadow:0 0 0 2px var(--bg),0 0 0 4px var(--brand-bright)}.btn-primary{background:var(--grad-brand);color:#fff;border-color:color-mix(in srgb,#fff 16%,transparent);text-shadow:0 1px 1px rgba(18,8,60,.28);box-shadow:inset 0 1px #ffffff3d,inset 0 -1px #0a042838,0 4px 16px -2px color-mix(in srgb,var(--brand) 48%,transparent)}.btn-primary:hover:not(:disabled){transform:translateY(-1px);border-color:color-mix(in srgb,#fff 28%,transparent);box-shadow:inset 0 1px #ffffff4d,inset 0 -1px #0a042838,0 8px 26px -4px color-mix(in srgb,var(--brand) 62%,transparent),0 2px 8px color-mix(in srgb,var(--brand-2) 30%,transparent)}.btn-ghost{background:color-mix(in srgb,var(--surface) 82%,transparent);border-color:var(--line-strong);color:var(--ink)}.btn-ghost:hover:not(:disabled){transform:translateY(-1px);border-color:color-mix(in srgb,var(--brand) 58%,transparent);color:var(--brand-ink);background:color-mix(in srgb,var(--brand) 9%,var(--surface));box-shadow:0 6px 20px -10px color-mix(in srgb,var(--brand) 45%,transparent)}.btn-quiet{background:transparent;color:var(--ink-soft);border:none;padding:8px 12px;border-radius:var(--radius-sm);font-weight:600;transition:color .15s ease,background-color .15s ease,transform .15s ease}.btn-quiet:hover{color:var(--brand-ink);background:var(--brand-soft)}.btn-quiet:focus-visible{outline:none;box-shadow:0 0 0 2px color-mix(in srgb,var(--brand) 45%,transparent)}.btn:active:not(:disabled),.btn-quiet:active{transform:translateY(1px) scale(.985)}.btn-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:22px}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:.72rem;font-weight:700;color:var(--brand-ink)}.hero{text-align:center;margin:8px 0 30px}.hero h1{font-size:2.1rem;line-height:1.15;letter-spacing:-.02em;margin:10px 0 8px}.hero p{color:var(--ink-soft);max-width:540px;margin:0 auto;font-size:1.02rem}.overall-bar-wrap{max-width:360px;margin:20px auto 0}.section-grid{display:grid;gap:16px}.section-card{display:block;text-align:left;width:100%;padding:22px;border:1px solid var(--line);background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:transform .12s ease,box-shadow .18s ease,border-color .18s ease}.section-card.is-live:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--brand)}.section-card.is-locked{opacity:.72;cursor:default}.section-card h3{margin:8px 0 6px;font-size:1.22rem;letter-spacing:-.01em}.section-card .blurb{color:var(--ink-soft);font-size:.94rem;margin:0 0 14px}.section-meta{display:flex;align-items:center;gap:10px;font-size:.82rem;color:var(--ink-faint)}.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:var(--radius-pill);font-size:.74rem;font-weight:600;background:var(--brand-soft);color:var(--brand-ink)}.pill.locked{background:var(--bg-soft);color:var(--ink-faint)}.pill.done{background:var(--success-soft);color:var(--success-ink)}.progress{height:9px;background:var(--bg-soft);border-radius:var(--radius-pill);overflow:hidden}.progress>span{display:block;height:100%;background:var(--grad-brand);border-radius:inherit;transition:width .5s cubic-bezier(.22,1,.36,1)}.progress.success>span{background:var(--grad-success)}.progress-label{font-size:.8rem;color:var(--ink-soft);margin-top:6px;display:flex;justify-content:space-between}.crumbs{display:flex;align-items:center;gap:6px;font-size:.85rem;color:var(--ink-faint);margin-bottom:18px;flex-wrap:wrap}.crumbs button{background:none;border:none;color:var(--ink-soft);padding:0;font-size:inherit}.crumbs button:hover{color:var(--brand-ink);text-decoration:underline}.crumbs .sep{opacity:.5}.level-block{margin-bottom:30px}.level-head{display:flex;align-items:baseline;gap:10px;margin-bottom:4px}.level-head h3{margin:0;font-size:1.15rem}.level-tag{font-size:.72rem;font-weight:700;color:var(--brand-ink);background:var(--brand-soft);padding:2px 9px;border-radius:var(--radius-pill)}.level-outline{color:var(--ink-soft);font-size:.9rem;margin:0 0 14px}.concept-list{display:grid;gap:12px}.concept-tile{display:flex;align-items:center;gap:14px;text-align:left;width:100%;padding:16px 18px;border:1px solid var(--line);background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:transform .12s ease,box-shadow .18s ease,border-color .18s ease}.concept-tile:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand)}.concept-tile.mastered{border-color:var(--success-soft);background:linear-gradient(0deg,var(--success-soft) 0%,var(--surface) 60%)}.concept-tile .tile-body{flex:1;min-width:0}.concept-tile .tile-title{font-weight:650;font-size:1.02rem;margin:0 0 2px}.concept-tile .tile-oneliner{color:var(--ink-soft);font-size:.88rem;margin:0;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.medallion{flex:none;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-size:1.1rem;font-weight:700;background:var(--bg-soft);color:var(--ink-faint);border:1px solid var(--line)}.medallion.mastered{background:var(--success);color:#fff;border-color:var(--success-deep);box-shadow:0 4px 12px #18a95766}.medallion.in-progress{background:var(--brand-soft);color:var(--brand-ink);border-color:var(--brand)}.medallion.review-due{background:var(--warn-soft);color:var(--warn);border-color:var(--warn)}.tile-status{flex:none;font-size:.76rem;color:var(--ink-faint);text-align:right}.tile-status.due{color:var(--warn);font-weight:600}.tile-status.mastered{color:var(--success-ink);font-weight:600}.player{display:block}.player-head{margin-bottom:18px}.player-head h1{font-size:1.7rem;letter-spacing:-.02em;margin:8px 0 6px}.player-head .oneliner{color:var(--ink-soft);margin:0}.stagebar{display:flex;gap:8px;margin:18px 0 24px}.stagebar .step{flex:1;height:6px;border-radius:var(--radius-pill);background:var(--bg-soft);transition:background-color .4s ease,box-shadow .4s ease}.stagebar .step.active{background:var(--grad-brand);background-size:220% 100%;animation:stage-flow 2.6s linear infinite;box-shadow:0 0 12px -2px color-mix(in srgb,var(--brand) 55%,transparent)}.stagebar .step.done{background:var(--success)}@keyframes stage-flow{to{background-position:-220% 0}}.panel{padding:24px}.player .panel{animation:rise .34s cubic-bezier(.22,1,.36,1) both}.panel+.panel{margin-top:16px}.panel h2.section-title{font-size:1.05rem;margin:0 0 10px;display:flex;align-items:center;gap:8px}.prompt-box{background:var(--brand-soft);border:1px solid var(--line-strong);border-radius:var(--radius-sm);padding:16px 18px;font-size:1.05rem;line-height:1.5}textarea.answer{width:100%;min-height:120px;resize:vertical;margin-top:14px;padding:14px;border-radius:var(--radius-sm);border:1px solid var(--line-strong);font-family:inherit;font-size:1rem;color:var(--ink);background:var(--surface-2)}textarea.answer:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}.hint{color:var(--ink-faint);font-size:.85rem;margin-top:10px}.reveal-block{margin-bottom:8px}.callout{border-radius:var(--radius-sm);padding:16px 18px;margin-top:14px}.callout .callout-label{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700;margin-bottom:6px}.callout.analogy{background:var(--insight-soft);border:1px solid var(--line)}.callout.analogy .callout-label{color:var(--insight)}.callout.worked{background:var(--surface-2);border:1px solid var(--line)}.callout.worked .callout-label{color:var(--brand-ink)}.callout.observe{background:var(--success-soft);border:1px solid var(--line)}.callout.observe .callout-label{color:var(--success-ink)}.tryit-head{margin-bottom:4px}.tryit-tag{display:inline-flex;align-items:center;gap:6px;font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700;color:var(--brand-ink);background:var(--brand-soft);border-radius:999px;padding:4px 12px;margin-bottom:10px}.tryit-step{margin-top:14px}.tryit-step-label{font-weight:600;font-size:.92rem;color:var(--ink-soft);margin-bottom:6px}.tryit-paste{position:relative;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 96px 14px 16px}.tryit-paste pre{margin:0;white-space:pre-wrap;word-break:break-word;font-family:SFMono-Regular,ui-monospace,Cascadia Code,Consolas,monospace;font-size:.88rem;line-height:1.55;color:var(--ink)}.tryit-copy{position:absolute;top:8px;right:8px;font-size:.8rem;padding:6px 12px}.tryit-copy.copied{color:var(--success-ink)}@media(max-width:640px){.tryit-paste{padding:44px 14px 12px}}.md-h2{font-size:1.18rem;letter-spacing:-.01em;margin:22px 0 8px}.md-h3{font-size:1.04rem;margin:18px 0 6px}.md-p{margin:0 0 14px;color:var(--ink)}.md-ul,.md-ol{margin:0 0 14px;padding-left:22px}.md-ul li,.md-ol li{margin-bottom:6px}code{background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:.88em;font-family:SFMono-Regular,ui-monospace,Cascadia Code,Consolas,monospace}.quiz-progress{font-size:.82rem;color:var(--ink-faint);margin-bottom:6px}.quiz-prompt{font-size:1.1rem;font-weight:600;line-height:1.45;margin:6px 0 18px}.confidence{text-align:center;padding:8px 0 4px}.confidence p{color:var(--ink-soft);margin:0 0 16px}.confidence-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.conf-btn{border:1px solid var(--line-strong);background:var(--surface);border-radius:var(--radius-sm);padding:14px 22px;font-weight:600;font-size:1rem;min-width:150px;transition:all .14s ease}.conf-btn:hover{transform:translateY(-1px)}.conf-btn:active{transform:translateY(1px) scale(.985)}.conf-btn .sub{display:block;font-weight:400;font-size:.8rem;color:var(--ink-faint);margin-top:3px}.conf-btn.sure:hover{border-color:var(--brand);background:var(--brand-soft);color:var(--brand-ink)}.conf-btn.unsure:hover{border-color:var(--warn);background:var(--warn-soft);color:var(--warn)}.options{display:grid;gap:10px}.option{text-align:left;width:100%;padding:14px 16px;border-radius:var(--radius-sm);border:1px solid var(--line-strong);background:var(--surface);font-size:.98rem;color:var(--ink);display:flex;gap:12px;align-items:flex-start;transition:all .14s ease}.option:hover:not(:disabled){border-color:var(--brand);background:var(--brand-soft);transform:translate(3px)}.option:active:not(:disabled){transform:translate(3px) scale(.995)}.option .marker{flex:none;width:24px;height:24px;border-radius:50%;border:1.5px solid var(--line-strong);display:grid;place-items:center;font-size:.8rem;font-weight:700;color:var(--ink-faint);transition:background-color .18s ease,border-color .18s ease,color .18s ease,transform .18s cubic-bezier(.34,1.56,.64,1)}.option:hover:not(:disabled) .marker{border-color:var(--brand);color:var(--brand-ink)}.option.correct{border-color:var(--success);background:var(--success-soft);animation:opt-pop .38s cubic-bezier(.34,1.56,.64,1)}.option.correct .marker{background:var(--success);border-color:var(--success);color:#fff;transform:scale(1.12)}.option.wrong{border-color:var(--danger);background:var(--danger-soft);animation:opt-shake .32s ease}.option.wrong .marker{background:var(--danger);border-color:var(--danger);color:#fff}@keyframes opt-pop{0%{transform:scale(1)}45%{transform:scale(1.016)}to{transform:scale(1)}}@keyframes opt-shake{0%,to{transform:translate(0)}25%{transform:translate(-4px)}55%{transform:translate(3px)}80%{transform:translate(-1px)}}.option.muted{opacity:.62}.option:disabled{cursor:default}.explanation{margin-top:16px;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 16px}.explanation .label{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700;color:var(--brand-ink);margin-bottom:5px}.distractor-note{margin-top:10px;font-size:.9rem;color:var(--ink-soft);border-left:3px solid var(--line-strong);padding-left:12px}.insight-flag{margin-top:14px;background:var(--insight-soft);border:1px solid var(--line);border-radius:var(--radius-sm);padding:13px 16px;display:flex;gap:10px}.insight-flag .spark{font-size:1.1rem}.insight-flag .insight-body{font-size:.9rem;color:var(--ink-soft)}.insight-flag .insight-body strong{color:var(--insight)}.learn-check{margin:16px 0 22px;padding:16px 18px;border:1px solid color-mix(in srgb,var(--brand) 26%,transparent);border-radius:var(--radius-sm);background:color-mix(in srgb,var(--brand) 5%,var(--surface-2))}.learn-check-label{font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;font-weight:700;color:var(--brand-ink);margin-bottom:8px}.learn-check-done{margin:0;color:var(--success-ink);font-size:.9rem;font-weight:600}.learn-check .quiz-prompt{font-size:1rem;margin-top:0}.seccheck.longform .option{align-items:flex-start;line-height:1.5;padding:16px 18px}.seccheck.longform .option .marker{margin-top:2px}.po-field{margin-top:16px}.po-field-label{display:block;font-size:.85rem;font-weight:700;color:var(--ink);margin-bottom:6px}.po-field-input{min-height:84px;margin-top:0}.po-field-problem{margin:6px 0 0;font-size:.85rem;color:var(--warn)}.player-build .build-brief{margin-bottom:16px}.build-tag{display:inline-flex;align-items:center;gap:6px;font-size:.7rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:#fff;background:var(--grad-brand);padding:4px 11px;border-radius:var(--radius-pill);margin-bottom:10px;box-shadow:0 2px 10px -3px color-mix(in srgb,var(--brand) 55%,transparent)}.result-built{display:flex;align-items:center;justify-content:center;gap:9px;margin:16px auto 0;max-width:560px;padding:12px 16px;border:1px solid color-mix(in srgb,var(--brand) 35%,transparent);border-radius:var(--radius-sm);background:var(--brand-soft);color:var(--ink);font-size:.92rem}.result-built svg{color:var(--brand-ink);flex:none}.model-answer{margin-top:14px;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 16px}.selfcheck-row{display:flex;gap:12px;margin-top:14px;flex-wrap:wrap}.result{text-align:center;padding:34px 24px}@property --pct{syntax: "<number>"; inherits: false; initial-value: 0;}.score-ring{width:132px;height:132px;margin:0 auto 18px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--brand) calc(var(--pct) * 1%),var(--bg-soft) 0);position:relative;animation:ring-fill 1s .15s cubic-bezier(.22,1,.36,1) both;box-shadow:0 0 42px -14px color-mix(in srgb,var(--brand) 55%,transparent)}.score-ring.win{background:conic-gradient(var(--success) calc(var(--pct) * 1%),var(--success-soft) 0);box-shadow:0 0 46px -12px color-mix(in srgb,var(--success) 60%,transparent)}@keyframes ring-fill{0%{--pct: 0}}.score-ring:after{content:"";position:absolute;top:12px;right:12px;bottom:12px;left:12px;background:var(--surface);border-radius:50%}.score-ring .score-num{position:relative;z-index:1;font-family:var(--font-display);font-size:1.9rem;font-weight:700;letter-spacing:-.02em}.result h2{font-size:1.5rem;margin:6px 0}.result p.sub{color:var(--ink-soft);margin:0 auto 8px;max-width:440px}.mastery-card{margin:22px auto 0;max-width:420px;text-align:left;padding:18px 20px}.mastery-card h4{margin:0 0 12px;font-size:.95rem}.req{display:flex;align-items:center;gap:10px;padding:7px 0;font-size:.92rem;border-top:1px solid var(--line)}.req:first-of-type{border-top:none}.req .tick{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:.78rem;font-weight:700;flex:none}.req .tick.met{background:var(--success-deep);color:#fff}.req .tick.unmet{background:var(--bg-soft);color:var(--ink-faint);border:1px solid var(--line-strong)}.req .req-text{flex:1}.req .req-val{color:var(--ink-faint);font-size:.85rem}.celebrate{text-align:center;padding:20px 0 6px;animation:rise .5s cubic-bezier(.22,1,.36,1)}.celebrate-pando{margin:0 auto -8px}.big-check{width:108px;height:108px;margin:0 auto 14px;border-radius:50%;background:linear-gradient(135deg,var(--success) 0%,#4fd089 100%);display:grid;place-items:center;box-shadow:0 12px 38px #18a95773;animation:pop .55s cubic-bezier(.18,1.4,.4,1) both}.big-check svg{width:56px;height:56px}.big-check svg path{stroke-dasharray:60;stroke-dashoffset:60;animation:draw .5s .25s ease forwards}.celebrate h2{color:var(--success-ink);font-size:1.6rem;margin:4px 0 6px}.celebrate p{color:var(--ink-soft);margin:0 auto;max-width:420px}.sparkles{position:relative;height:0}.sparkles span{position:absolute;top:-70px;font-size:1.1rem;animation:float-up 1.1s ease forwards;opacity:0}@keyframes pop{0%{transform:scale(.3);opacity:0}to{transform:scale(1);opacity:1}}@keyframes draw{to{stroke-dashoffset:0}}@keyframes rise{0%{transform:translateY(10px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes float-up{0%{transform:translateY(0) scale(.6);opacity:0}30%{opacity:1}to{transform:translateY(-60px) scale(1.1);opacity:0}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;transition-duration:.05ms!important}}.empty{text-align:center;color:var(--ink-soft);padding:40px 20px}.tiny{font-size:.78rem;color:var(--ink-faint)}@media(max-width:540px){.hero h1{font-size:1.7rem}.panel{padding:18px}.conf-btn{flex:1;min-width:0}.result-stats{grid-template-columns:1fr}.lesson-companion,.pando-nudge{align-items:flex-start}}.tk-shell{display:grid;grid-template-columns:248px minmax(0,1fr) 360px;height:100vh;height:100dvh;overflow:hidden}.tk-shell.no-rail{grid-template-columns:248px minmax(0,1fr)}.tk-shell.solo{grid-template-columns:1fr;place-items:center;overflow:auto}.tk-side{display:flex;flex-direction:column;padding:20px 14px;border-right:1px solid var(--line);background:color-mix(in srgb,var(--bg-2) 92%,var(--bg));min-height:0}.tk-side-brand{display:inline-flex;align-items:center;gap:10px;background:none;border:none;padding:4px 8px 22px;color:var(--ink);font-family:var(--font-display);font-size:.95rem;font-weight:600;letter-spacing:.02em;text-transform:uppercase}.tk-side-nav{display:flex;flex-direction:column;gap:3px}.tk-side-item{display:flex;align-items:center;gap:12px;padding:11px 13px;border-radius:11px;border:none;background:none;color:var(--ink-soft);font-size:.92rem;font-weight:500;text-align:left;transition:background .13s ease,color .13s ease,transform .13s ease}.tk-side-item:hover{background:var(--surface-glass);color:var(--ink)}.tk-side-item:hover svg{color:var(--brand-bright)}.tk-side-item:active{transform:scale(.97)}.tk-side-item.active{background:var(--brand-soft);color:var(--brand-bright);font-weight:600;box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--brand) 30%,transparent)}.tk-side-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:16px}.tk-side-pando{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid color-mix(in srgb,var(--brand) 22%,transparent);border-radius:14px;background:radial-gradient(120% 90% at 0% 0%,rgba(34,211,238,.1),transparent 58%),var(--surface-glass)}.tk-side-pando p{margin:0;color:var(--ink-soft);font-size:.76rem;line-height:1.35}.tk-streak{display:flex;align-items:center;gap:11px;padding:11px 13px;border-radius:12px;border:1px solid var(--line);background:var(--surface-glass)}.tk-streak-flame{color:var(--success-bright);display:grid;place-items:center}.tk-streak-num{font-family:var(--font-display);font-weight:700;font-size:1.1rem;line-height:1;color:var(--ink)}.tk-streak-cap{font-size:.62rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint)}.tk-side-theme{display:flex;align-items:center;gap:10px;padding:10px 13px;border-radius:11px;border:1px solid var(--line);background:var(--surface-glass);color:var(--ink-soft);font-size:.86rem;font-weight:500;transition:color .13s ease,border-color .13s ease}.tk-side-theme:hover{color:var(--brand-bright);border-color:var(--brand)}.tk-side-tag{font-size:.74rem;color:var(--ink-faint);line-height:1.4;margin:4px 4px 0}.tk-main{display:flex;flex-direction:column;min-width:0;min-height:0}.tk-topbar{display:flex;align-items:center;gap:12px;padding:14px 26px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg-2) 78%,transparent);-webkit-backdrop-filter:saturate(140%) blur(10px);backdrop-filter:saturate(140%) blur(10px)}.tk-track-chip{font-family:var(--font-display);font-size:.74rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;background:linear-gradient(90deg,var(--brand-bright),var(--brand2-ink));-webkit-background-clip:text;background-clip:text;color:transparent}.tk-counter{display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:var(--radius-pill);border:1px solid var(--line);background:var(--surface-glass);font-weight:700;font-size:.84rem;color:var(--ink);transition:transform .15s ease,border-color .15s ease,box-shadow .18s ease}.tk-counter:hover{transform:translateY(-1px);border-color:color-mix(in srgb,var(--brand) 45%,transparent);box-shadow:0 4px 14px -8px color-mix(in srgb,var(--brand) 50%,transparent)}.tk-counter svg{color:var(--xp)}.tk-main-scroll{flex:1;overflow-y:auto;padding:28px clamp(18px,4vw,48px) 64px}.tk-path-back{display:inline-flex;align-items:center;gap:7px;padding:8px 15px;margin-bottom:10px;border-radius:var(--radius-pill);border:1px solid var(--line-strong);background:var(--surface);color:var(--ink-soft);font-size:.86rem;font-weight:600;transition:transform .12s ease,border-color .15s ease,color .15s ease,box-shadow .18s ease}.tk-path-back svg{color:var(--brand-bright)}.tk-path-back:hover{transform:translate(-3px);color:var(--ink);border-color:var(--brand);box-shadow:0 0 18px -6px color-mix(in srgb,var(--brand) 45%,transparent)}.tk-path-head{text-align:center;margin:6px 0 28px}.tk-path-pando{margin:0 auto 4px}.tk-path-head h1{font-family:var(--font-display);font-size:2rem;font-weight:700;letter-spacing:.01em;text-transform:uppercase;margin:0 0 6px}.tk-path-head p{color:var(--ink-soft);margin:0}.tk-path-track{max-width:640px;margin:0 auto}.tk-module{margin-bottom:8px}.tk-module-head{display:flex;align-items:center;gap:10px;margin:26px 0 12px}.tk-module-code{font-family:var(--font-display);font-size:.72rem;font-weight:800;letter-spacing:.08em;color:#fff;background:var(--grad-brand);padding:3px 9px;border-radius:var(--radius-pill);box-shadow:0 2px 10px -3px color-mix(in srgb,var(--brand) 55%,transparent)}.tk-module-title{font-weight:700;font-size:1.02rem;color:var(--ink)}.tk-node-row{display:grid;grid-template-columns:40px 1fr;gap:14px}.tk-node-rail{display:flex;flex-direction:column;align-items:center}.tk-node{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;flex:none;border:1.5px solid var(--line-strong);background:var(--bg-soft);color:var(--ink-faint);position:relative;overflow:hidden;transition:transform .12s ease}.tk-node-num{position:relative;z-index:1;font-weight:800;font-size:.82rem}.tk-node.mastered,.tk-node.review-due{background:#22c55e2e;border-color:var(--success);color:var(--success-bright);box-shadow:var(--glow-success)}.tk-node.review-due{background:#f5a5242e;border-color:var(--warn);color:var(--warn);box-shadow:0 0 22px var(--warn-soft)}.tk-node.available,.tk-node.in-progress{background:#7c3aed38;border-color:var(--brand-bright);color:var(--brand-bright);box-shadow:var(--glow-brand)}.tk-node.locked{background:var(--bg-soft);color:var(--ink-faint)}.tk-node svg{position:relative;z-index:1;color:#fff}.tk-node.locked svg{color:var(--ink-faint)}.tk-node-tiles{position:absolute;top:6px;right:6px;bottom:6px;left:6px;display:grid;grid-template-columns:repeat(2,1fr);gap:3px}.tk-node-tiles i{border-radius:3px;background:currentColor;opacity:.55}.tk-node-line{flex:1;width:2px;min-height:18px;background:var(--line-strong);margin:4px 0}.tk-node-row:last-child .tk-node-line{display:none}.tk-node-body{display:flex;align-items:center;gap:12px;text-align:left;width:100%;padding:14px 16px;margin-bottom:10px;border:1px solid var(--line);background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:transform .12s ease,box-shadow .18s ease,border-color .18s ease}.tk-node-body:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand)}.tk-node-body:disabled{opacity:.6;cursor:not-allowed}.tk-node-row.current .tk-node-body{border-color:var(--brand);background:linear-gradient(120deg,var(--brand-soft),var(--surface) 70%);box-shadow:var(--glow-brand)}.tk-node-main{flex:1;min-width:0}.tk-node-no{font-size:.66rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-bright)}.tk-node-title{font-weight:650;font-size:1.04rem;margin:2px 0 4px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.tk-lock-pill{display:inline-flex;align-items:center;gap:4px;font-size:.64rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--warn);background:var(--warn-soft);padding:2px 7px;border-radius:var(--radius-pill)}.tk-build-pill{display:inline-flex;align-items:center;gap:4px;font-size:.64rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--brand-ink);background:var(--brand-soft);border:1px solid color-mix(in srgb,var(--brand) 30%,transparent);padding:2px 7px;border-radius:var(--radius-pill)}.tk-build-pill.done{color:var(--success-ink);background:var(--success-soft);border-color:color-mix(in srgb,var(--success) 30%,transparent)}.tk-node-meta{display:flex;align-items:center;gap:7px;font-size:.8rem;color:var(--ink-faint)}.tk-node-status{font-weight:600}.tk-node-status.s-mastered{color:var(--success-ink)}.tk-node-status.s-review-due{color:var(--warn)}.tk-node-status.s-in-progress,.tk-node-status.s-available{color:var(--brand-ink)}.tk-dot{opacity:.5}.tk-node-go{flex:none;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;color:#fff;background:var(--grad-brand);box-shadow:var(--glow-brand);transition:transform .18s cubic-bezier(.34,1.3,.64,1)}.tk-node-body:hover:not(:disabled) .tk-node-go{transform:scale(1.08) translate(2px)}.tk-checkpoint{display:flex;align-items:center;gap:12px;margin:4px 0 14px 54px;padding:14px 16px;border:1px dashed var(--line-strong);border-radius:var(--radius);background:var(--surface-glass)}.tk-checkpoint.cleared{border-style:solid;border-color:var(--success);background:var(--success-soft)}.tk-checkpoint-badge{flex:none;width:32px;height:32px;border-radius:9px;display:grid;place-items:center;background:var(--bg-soft);color:var(--ink-faint)}.tk-checkpoint.cleared .tk-checkpoint-badge{background:var(--success);color:#fff}.tk-checkpoint strong{display:block;font-size:.92rem}.tk-checkpoint span{font-size:.8rem;color:var(--ink-soft)}.tk-rail{border-left:1px solid var(--line);overflow-y:auto;padding:24px 22px;display:flex;flex-direction:column;gap:18px;background:color-mix(in srgb,var(--bg-2) 40%,transparent)}.tk-rail-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-sm);padding:18px}.tk-rail-eyebrow{font-size:.66rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:12px}.tk-rail-lesson{display:flex;flex-direction:column;gap:4px}.tk-rail-no{font-size:.66rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-bright)}.tk-rail-lesson h3{margin:0;font-size:1.12rem;font-family:var(--font-display)}.tk-rail-state{font-size:.78rem;color:var(--brand-ink);font-weight:600}.tk-rail-blurb{color:var(--ink-soft);font-size:.9rem;margin:12px 0}.tk-rail-meta{display:inline-flex;align-items:center;gap:6px;font-size:.82rem;color:var(--ink-faint);margin-bottom:14px}.tk-rail-cta{width:100%;display:inline-flex;align-items:center;justify-content:center;gap:8px}.tk-rail-next{display:flex;gap:11px;align-items:flex-start;margin-bottom:18px}.tk-rail-next-ico{flex:none;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:var(--bg-soft);color:var(--ink-faint)}.tk-rail-next-title{font-weight:650;font-size:.92rem}.tk-rail-next p{margin:3px 0 0;font-size:.82rem;color:var(--ink-soft)}.tk-rail-prog{border-top:1px solid var(--line);padding-top:16px}.tk-rail-prog-num{font-size:.92rem;font-weight:600;margin:8px 0 10px}.tk-rail-footnote{text-align:center;font-size:.78rem;color:var(--ink-faint);margin:auto 0 0}.tk-rail-lesslink{background:none;border:none;padding:0;color:var(--brand-ink);font-size:inherit;font-weight:600;text-decoration:underline;text-underline-offset:2px}.tk-rail-lesslink:hover{color:var(--brand-bright)}.ai-loading{display:flex;align-items:center;gap:10px;margin-top:18px;color:var(--ink-soft);font-size:.92rem}.spinner{width:18px;height:18px;border-radius:50%;border:2px solid var(--brand-soft);border-top-color:var(--brand);animation:tk-spin .7s linear infinite}.account-form{display:grid;gap:10px;max-width:360px;margin:16px auto 0}.account-input{width:100%;padding:12px 14px;border-radius:var(--radius-sm);border:1px solid var(--line-strong);background:var(--surface-2);color:var(--ink);font-family:inherit;font-size:.95rem}.account-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}.account-error{margin:12px 0 0;color:var(--danger);font-size:.88rem}.tk-content-loading{display:flex;align-items:center;justify-content:center;gap:12px;min-height:60vh;color:var(--ink-soft);font-size:.95rem}@keyframes tk-spin{to{transform:rotate(360deg)}}.feyn-fb{margin-top:18px}.feyn-score{display:inline-flex;align-items:baseline;gap:10px;padding:10px 18px;border-radius:var(--radius);background:var(--surface-2);border:1px solid var(--line)}.feyn-score-n{font-size:2rem;font-weight:800;letter-spacing:-.02em}.feyn-score.v-pass{border-color:var(--success);background:var(--success-soft)}.feyn-score.v-pass .feyn-score-n{color:var(--success-ink)}.feyn-score.v-developing .feyn-score-n{color:var(--brand-ink)}.feyn-score.v-retry{border-color:var(--warn);background:var(--warn-soft)}.feyn-score-cap{font-size:.85rem;font-weight:600;color:var(--ink-soft)}.feyn-comment{margin:14px 0;color:var(--ink)}.feyn-list{margin-top:12px;border-radius:var(--radius-sm);padding:12px 14px;border:1px solid var(--line);background:var(--surface-2)}.feyn-list .label{font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700;margin-bottom:6px}.feyn-list ul{margin:0;padding-left:18px;font-size:.9rem;color:var(--ink-soft)}.feyn-list.good .label{color:var(--success-ink)}.feyn-list.miss .label{color:var(--warn)}.feyn-list.jargon .label{color:var(--insight)}.calib{margin-top:6px}.calib-axis-note{font-size:.85rem;color:var(--ink-soft);margin-bottom:10px}.calib-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.calib-cell{border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--surface-2);padding:12px 14px;display:flex;flex-direction:column;gap:2px}.calib-cell.good{border-color:color-mix(in srgb,var(--success) 35%,transparent)}.calib-cell.flag{border-color:color-mix(in srgb,var(--insight) 35%,transparent)}.calib-cell.flag.active{background:var(--insight-soft);box-shadow:0 0 0 1px var(--insight) inset}.calib-n{font-size:1.5rem;font-weight:800;letter-spacing:-.02em}.calib-cell.good .calib-n{color:var(--success-ink)}.calib-cell.flag .calib-n{color:var(--insight)}.calib-label{font-size:.74rem;color:var(--ink-soft)}.calib .compact .calib-n{font-size:1.2rem}.calib-note{margin-top:12px;font-size:.88rem;color:var(--ink-soft);background:var(--insight-soft);border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px}.calib-note.good{background:var(--success-soft)}.calib-note .spark{margin-right:6px;color:var(--insight)}.calib-note.good .spark{color:var(--success-ink)}.calib-note strong{color:var(--insight)}.calib-card{margin:18px auto 0;max-width:460px;text-align:left;padding:18px 20px}.calib-card h4{margin:0 0 12px;font-size:.95rem}.playground .po-task{background:var(--brand-soft);border:1px solid var(--line-strong);border-radius:var(--radius-sm);padding:14px 16px;font-size:.96rem;margin-bottom:14px}textarea.answer.mono{font-family:SFMono-Regular,ui-monospace,Cascadia Code,Consolas,monospace;font-size:.9rem}.po-output{margin-top:16px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface-2);padding:12px 14px}.po-output .label{font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700;color:var(--brand-ink);margin-bottom:6px}.po-output pre{margin:0;white-space:pre-wrap;word-break:break-word;font-family:SFMono-Regular,ui-monospace,Consolas,monospace;font-size:.85rem;color:var(--ink)}.po-result{display:flex;gap:12px;margin-top:16px;padding:14px 16px;border-radius:var(--radius-sm);border:1px solid var(--line)}.po-result.pass{background:var(--success-soft);border-color:var(--success)}.po-result.fail{background:var(--warn-soft);border-color:var(--warn)}.po-result-icon{flex:none;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-weight:800;color:#fff}.po-result.pass .po-result-icon{background:var(--success)}.po-result.fail .po-result-icon{background:var(--warn)}.po-result p{margin:4px 0 0;font-size:.9rem;color:var(--ink-soft)}.po-hint{color:var(--success-ink)!important;font-weight:500}.po-degraded{margin-top:14px;font-size:.9rem;color:var(--ink-soft)}.tk-dash-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;max-width:820px;margin:0 auto}.tk-dash-card{padding:20px}.tk-dash-card h4{margin:0 0 12px;font-size:.95rem}.tk-dash-big{font-family:var(--font-display);font-size:2.6rem;font-weight:800;letter-spacing:-.02em;line-height:1}.tk-dash-sub{color:var(--ink-soft);font-size:.88rem;margin:6px 0 12px}.tk-dash-stat{display:flex;align-items:center;justify-content:space-between;margin-top:12px;font-size:.88rem;color:var(--ink-soft)}.tk-dash-stat strong{color:var(--ink);font-size:1.05rem}.tk-dash-list{list-style:none;margin:0;padding:0}.tk-dash-list li{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 0;border-top:1px solid var(--line)}.tk-dash-list li:first-child{border-top:none}.tk-dash-list button{background:none;border:none;color:var(--ink);font-size:.9rem;text-align:left;padding:0}.tk-dash-list button:hover{color:var(--brand-ink)}.tk-due{font-size:.8rem;color:var(--warn);font-weight:600}.tk-weak{font-size:.8rem;color:var(--ink-faint);font-weight:600}.tk-trend{margin-top:14px}.tk-trend-cap{font-size:.74rem;color:var(--ink-faint)}.tk-trend-bars{display:flex;align-items:flex-end;gap:4px;height:40px;margin-top:6px}.tk-trend-bar{flex:1;background:linear-gradient(0deg,var(--insight),var(--brand-bright));border-radius:3px 3px 0 0;min-height:4px}.tk-place,.tk-soon{max-width:620px;margin:40px auto}.tk-place-card{text-align:center}.tk-place-card .sub{overflow-wrap:anywhere}.tk-empty-pando{margin:-8px auto 6px}.tk-place-card h2{font-size:1.5rem;margin:8px 0}.tk-place-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.tk-place-card .quiz-prompt,.tk-place-card .options,.tk-place-card .model-answer{text-align:left}.tk-interest-row{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin:18px auto 0}.tk-interest-row span{padding:7px 11px;border-radius:var(--radius-pill);border:1px solid color-mix(in srgb,var(--brand) 24%,transparent);background:var(--surface-2);color:var(--ink-soft);font-size:.78rem;font-weight:700}.tk-wall .tk-wall-ico{display:grid;place-items:center;width:56px;height:56px;border-radius:16px;margin:0 auto 10px;background:var(--warn-soft);color:var(--warn)}.tk-wall-list{text-align:left;max-width:380px;margin:16px auto;color:var(--ink-soft);font-size:.9rem}.tk-wall-list li{margin-bottom:8px}.tk-lesson-wrap{max-width:760px;margin:0 auto}.tk-picker{max-width:1040px;margin:0 auto}.tk-picker-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:8px}.accent-violet{--tint: var(--brand)}.accent-blue{--tint: var(--brand-2)}.accent-amber{--tint: var(--warn)}.accent-green{--tint: var(--success)}.accent-magenta{--tint: var(--accent)}.tk-track-card{display:flex;flex-direction:column;text-align:left;width:100%;padding:22px;border:1px solid var(--line);border-radius:var(--radius-lg);background:radial-gradient(120% 90% at 100% 0,color-mix(in srgb,var(--tint) 12%,transparent),transparent 60%),var(--surface);box-shadow:var(--shadow-sm);transition:transform .14s ease,box-shadow .2s ease,border-color .2s ease}.tk-track-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--tint)}.tk-track-card.soon{opacity:.92}.tk-track-card.featured{padding:26px;margin-bottom:6px;border-color:color-mix(in srgb,var(--tint) 45%,var(--line));background:radial-gradient(120% 110% at 100% 0,color-mix(in srgb,var(--tint) 20%,transparent),transparent 62%),var(--surface);box-shadow:var(--shadow-md)}.tk-track-flag{margin-left:auto;margin-right:10px;padding:5px 12px;border-radius:var(--radius-pill);font-size:.72rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--brand-ink);background:color-mix(in srgb,var(--tint) 18%,transparent);border:1px solid color-mix(in srgb,var(--tint) 35%,transparent)}.tk-picker-lib-head{margin:26px 0 10px}.tk-picker-lib-head h2{font-size:1.15rem;letter-spacing:-.01em;margin:0 0 2px}.tk-picker-lib-head p{margin:0;color:var(--ink-faint);font-size:.9rem}.tk-track-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.tk-track-ico{display:grid;place-items:center;width:52px;height:52px;border-radius:15px;color:var(--tint);background:color-mix(in srgb,var(--tint) 16%,transparent);border:1px solid color-mix(in srgb,var(--tint) 30%,transparent)}.tk-track-badge{display:inline-flex;align-items:center;gap:5px;padding:5px 12px;border-radius:var(--radius-pill);font-size:.72rem;font-weight:700;letter-spacing:.02em}.tk-track-badge.live{color:var(--tint);background:color-mix(in srgb,var(--tint) 16%,transparent)}.tk-track-badge.soon{color:var(--ink-faint);background:var(--bg-soft)}.tk-track-card h3{font-family:var(--font-display);font-size:1.3rem;letter-spacing:-.01em;margin:0 0 6px}.tk-track-tagline{color:var(--tint);font-weight:600;font-size:.9rem;margin:0 0 8px}.tk-track-blurb{color:var(--ink-soft);font-size:.9rem;margin:0 0 16px;flex:1}.tk-track-foot{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding-top:14px}.tk-track-prog{font-size:.82rem;color:var(--ink-faint);font-weight:600}.tk-track-go{display:inline-flex;align-items:center;gap:6px;font-size:.86rem;font-weight:700;color:var(--tint)}.tk-track-go.soon{color:var(--ink-faint)}.tk-outline{max-width:720px;margin:0 auto}.tk-outline .tk-path-head{text-align:center}.tk-outline-ico{display:inline-grid;place-items:center;width:60px;height:60px;border-radius:18px;margin:0 auto 10px;color:var(--tint);background:color-mix(in srgb,var(--tint) 16%,transparent);border:1px solid color-mix(in srgb,var(--tint) 30%,transparent)}.tk-outline-banner{display:flex;gap:12px;align-items:center;padding:14px 16px;margin-bottom:18px;border-radius:var(--radius);border:1px solid color-mix(in srgb,var(--tint) 30%,transparent);background:color-mix(in srgb,var(--tint) 10%,transparent);color:var(--ink-soft);font-size:.9rem}.tk-outline-banner svg{color:var(--tint);flex:none}.tk-outline-north{padding:16px 18px;margin-bottom:18px}.tk-outline-north p{margin:6px 0 0;color:var(--ink)}.tk-outline-modules{display:flex;flex-direction:column;gap:10px;margin-bottom:22px}.tk-outline-module{display:flex;gap:14px;align-items:flex-start;padding:16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}.tk-outline-num{flex:none;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;font-weight:800;font-size:.9rem;color:var(--tint);background:color-mix(in srgb,var(--tint) 14%,transparent)}.tk-outline-mtitle{font-weight:650;font-size:1.02rem;display:flex;align-items:center;gap:8px}.tk-outline-module p{margin:4px 0 0;color:var(--ink-soft);font-size:.88rem}@media(max-width:720px){.tk-picker-grid{grid-template-columns:1fr}}@media(max-width:1180px){.tk-shell{grid-template-columns:240px minmax(0,1fr)}.tk-rail{display:none}}@media(max-width:820px){.tk-shell,.tk-shell.no-rail{grid-template-columns:64px minmax(0,1fr)}.tk-side-brand span,.tk-side-item span,.tk-side-theme span,.tk-side-tag,.tk-side-pando p,.tk-streak-cap,.tk-streak div div:last-child{display:none}.tk-streak{flex-direction:column;justify-content:center;gap:3px;padding:9px 0}.tk-streak-num{font-size:.88rem}.tk-side-theme{justify-content:center;padding:10px 0}.tk-side-pando{justify-content:center;padding:8px 0}.tk-side-pando .pando-mascot{width:42px;height:42px}.tk-side-item{justify-content:center;padding:11px 0}.tk-main-scroll{padding:22px 16px 56px}}@media(max-width:640px){.tk-shell,.tk-shell.no-rail{display:flex;flex-direction:column;height:100vh;height:100dvh}.tk-shell.solo{display:grid}.tk-main{order:1;flex:1;min-height:0}.tk-side{order:2;flex-direction:row;align-items:stretch;border-right:none;border-top:1px solid var(--line);padding:4px 6px calc(4px + env(safe-area-inset-bottom,0px));min-height:0}.tk-side-brand,.tk-side-foot{display:none}.tk-side-nav{flex-direction:row;flex:1;justify-content:space-around;gap:0}.tk-side-item{flex-direction:column;justify-content:center;gap:3px;padding:6px 4px;flex:1;min-width:0;border-radius:9px}.tk-side-item span{display:block;font-size:.58rem;font-weight:600;line-height:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}.tk-topbar{padding:10px 12px;gap:8px}.tk-track-chip{max-width:38vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tk-main-scroll{padding:16px 12px calc(28px + env(safe-area-inset-bottom,0px))}.panel.card{padding:18px 14px}.tk-path-head h1{font-size:1.35rem}.answer,.account-input,textarea,input[type=email],input[type=password],input[type=text]{font-size:16px}}.lv-ring{position:relative;display:inline-grid;place-items:center;flex:none}.lv-ring-num{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;font-family:var(--font-display);font-weight:700;color:var(--brand-ink);line-height:1}.tk-side-profile{display:flex;align-items:center;gap:11px;padding:9px 12px;border-radius:12px;border:1px solid var(--line);background:var(--surface-glass);text-align:left;transition:border-color .18s ease,transform .18s ease}.tk-side-profile:hover{border-color:color-mix(in srgb,var(--brand) 55%,transparent);transform:translateY(-1px)}.tk-side-avatar{width:42px;height:42px;border-radius:12px;object-fit:cover;border:1px solid var(--line-strong);box-shadow:0 0 18px -8px color-mix(in srgb,var(--brand) 70%,transparent);flex:none}.tk-side-profile-meta{display:flex;flex-direction:column;gap:2px;min-width:0;flex:1}.tk-side-profile-ring{margin-left:auto}.tk-side-lvl{font-family:var(--font-display);font-weight:700;font-size:.9rem;color:var(--ink);line-height:1.1}.tk-side-title{font-size:.72rem;color:var(--brand-ink);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.streak-badge-body{display:flex;flex-direction:column;gap:1px}.streak-badge.safe .tk-streak-flame{color:var(--success-bright)}.streak-badge.risk .tk-streak-flame{color:var(--warn);animation:streak-pulse 1.6s ease-in-out infinite}.streak-badge.risk{border-color:color-mix(in srgb,var(--warn) 45%,transparent)}.streak-badge.risk .tk-streak-cap{color:var(--warn)}.streak-badge.empty .tk-streak-flame{color:var(--ink-faint)}@keyframes streak-pulse{0%,to{transform:scale(1);opacity:.85}50%{transform:scale(1.14);opacity:1}}.tk-counter-btn{cursor:pointer;transition:border-color .18s ease,color .18s ease}.tk-counter-btn:hover{border-color:var(--brand);color:var(--brand-ink)}.tk-counter-tok svg{color:var(--gem)}.tk-prog{padding:20px;display:flex;flex-direction:column;gap:18px;margin-bottom:18px}.tk-prog-main{display:flex;align-items:center;gap:18px}.tk-prog-avatar{width:86px;height:86px;border-radius:20px;object-fit:cover;border:1px solid color-mix(in srgb,var(--brand) 34%,transparent);box-shadow:var(--glow-brand);flex:none}.tk-prog-lvl{flex:1;min-width:0}.tk-prog-lvl-num{font-family:var(--font-display);font-weight:700;font-size:1.35rem;color:var(--ink)}.tk-prog-lvl-title{color:var(--brand-ink);font-weight:600;font-size:.9rem;margin-bottom:8px}.tk-prog-bar{height:8px;border-radius:var(--radius-pill);background:var(--bg-soft);overflow:hidden}.tk-prog-bar>span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--brand-deep),var(--brand-bright));transition:width .5s ease}.tk-prog-xp{margin-top:6px;font-size:.76rem;color:var(--ink-faint)}.tk-prog-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.tk-prog-stat{padding:11px 12px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface-2)}.tk-prog-stat span{display:block;color:var(--ink-faint);font-size:.66rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.tk-prog-stat strong{display:inline-flex;align-items:center;gap:6px;margin-top:4px;font-family:var(--font-display);font-size:1.02rem}.tk-prog-stat strong svg{color:var(--xp)}.tk-rank-mini{width:24px;height:24px;border-radius:7px;object-fit:cover;flex:none;box-shadow:0 0 14px -7px currentColor}.tk-avatars{padding:20px;margin-bottom:18px}.tk-avatars h4{margin:0 0 4px}.tk-avatar-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(138px,1fr));gap:12px;margin-top:14px}.tk-avatar-option{display:flex;flex-direction:column;gap:4px;min-width:0;padding:0 0 12px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--surface-2);overflow:hidden;text-align:left;transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease}.tk-avatar-option:hover{border-color:var(--brand);transform:translateY(-1px)}.tk-avatar-option.equipped{border-color:var(--brand);background:var(--brand-soft);box-shadow:var(--glow-brand)}.tk-avatar-option img{width:100%;aspect-ratio:1;object-fit:cover;display:block;border-bottom:1px solid var(--line)}.tk-avatar-name,.tk-avatar-meta{display:block;width:100%;padding:0 12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tk-avatar-name{margin-top:6px;font-family:var(--font-display);font-size:.95rem;font-weight:700;color:var(--ink)}.tk-avatar-meta{font-size:.72rem;font-weight:700;color:var(--ink-faint)}.tk-avatar-option.equipped .tk-avatar-meta{color:var(--brand-ink)}.tk-titles{padding:20px;margin-bottom:18px}.tk-titles h4{margin:0 0 4px}.tk-title-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;margin-top:14px}.tk-title{display:flex;flex-direction:column;gap:3px;padding:12px 13px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--surface-2);text-align:left;transition:border-color .18s ease,transform .18s ease}.tk-title:not(.locked):hover{border-color:var(--brand);transform:translateY(-1px)}.tk-title.equipped{border-color:var(--brand);background:var(--brand-soft);box-shadow:var(--glow-brand)}.tk-title.locked{opacity:.55;cursor:not-allowed}.tk-title-name{font-family:var(--font-display);font-weight:700;font-size:.94rem;color:var(--ink)}.tk-title-meta{font-size:.72rem;color:var(--ink-faint);font-weight:600}.tk-title.equipped .tk-title-meta{color:var(--brand-ink)}.tk-title-next{margin-top:12px}.result-levelup{display:flex;flex-direction:column;gap:6px;align-items:center;margin:18px auto 0;max-width:460px;padding:12px 16px;border-radius:var(--radius-sm);border:1px solid color-mix(in srgb,var(--brand) 45%,transparent);background:var(--brand-soft)}.result-levelup .ru-level{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-display);font-weight:700;color:var(--brand-ink)}.result-levelup .ru-title{color:var(--ink-soft);font-size:.9rem}.lb{max-width:720px;margin:0 auto}.lb-rollover{padding:12px 16px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--surface-2);margin-bottom:16px;font-size:.92rem}.lb-rollover.up{border-color:color-mix(in srgb,var(--success) 45%,transparent);background:var(--success-soft)}.lb-rollover.down{border-color:color-mix(in srgb,var(--danger) 45%,transparent);background:var(--danger-soft)}.lb-top{display:flex;align-items:stretch;gap:14px;margin-bottom:16px;flex-wrap:wrap}.lb-rankcard{flex:1;min-width:240px;display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:var(--radius);border:1px solid color-mix(in srgb,var(--rank-color, var(--brand)) 45%,transparent);background:color-mix(in srgb,var(--rank-color, var(--brand)) 12%,var(--surface))}.lb-rank-ico{display:grid;place-items:center;width:64px;height:64px;border-radius:18px;color:#fff;background:color-mix(in srgb,var(--rank-color, var(--brand)) 18%,var(--surface));border:1px solid color-mix(in srgb,var(--rank-color, var(--brand)) 40%,transparent);overflow:hidden;flex:none}.lb-rank-ico img{width:100%;height:100%;object-fit:cover}.lb-rank-label{font-family:var(--font-display);font-weight:700;font-size:1.2rem;color:var(--ink)}.lb-rank-sub{color:var(--ink-soft);font-size:.84rem}.lb-rank-sub svg{color:var(--xp);vertical-align:-2px}.lb-timer{display:flex;flex-direction:column;justify-content:center;align-items:center;gap:2px;padding:14px 22px;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface-glass)}.lb-timer-cap{font-size:.64rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint)}.lb-timer-val{font-family:var(--font-display);font-weight:700;font-size:1.25rem;color:var(--ink)}.lb-ladder{display:flex;gap:6px;margin-bottom:16px}.lb-pip{flex:1;display:flex;align-items:center;justify-content:center;gap:6px;min-width:0;padding:5px 7px;border-radius:var(--radius-pill);border:1px solid var(--line);background:var(--surface-2);font-size:.72rem;font-weight:700;color:var(--ink-faint);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lb-pip img{width:28px;height:28px;border-radius:9px;object-fit:cover;flex:none}.lb-pip span{overflow:hidden;text-overflow:ellipsis}.lb-pip.past{color:var(--ink-soft);border-color:color-mix(in srgb,var(--rank-color) 40%,transparent)}.lb-pip.current{color:#fff;background:var(--rank-color, var(--brand));border-color:var(--rank-color, var(--brand));box-shadow:0 0 18px color-mix(in srgb,var(--rank-color, var(--brand)) 55%,transparent)}.lb-nudge{padding:11px 15px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:600;margin-bottom:16px;border:1px solid var(--line);background:var(--surface-2)}.lb-nudge.promote{border-color:color-mix(in srgb,var(--success) 45%,transparent);background:var(--success-soft);color:var(--success-ink)}.lb-nudge.demote{border-color:color-mix(in srgb,var(--danger) 45%,transparent);background:var(--danger-soft);color:var(--danger)}.lb-rollover svg{vertical-align:-2px;color:var(--gem)}.lb-payout{display:flex;align-items:center;gap:8px;padding:9px 15px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--surface-2);font-size:.84rem;color:var(--ink-soft);margin-bottom:16px}.lb-payout svg{color:var(--gem);flex:none}.lb-payout strong{color:var(--brand-ink)}.lb-board{padding:8px}.lb-real-note{margin:10px 2px 0;font-size:.8rem;color:var(--ink-soft)}.lb-zone-head{font-size:.66rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--success-ink);padding:8px 10px 4px}.lb-rows{list-style:none;margin:0;padding:0}.lb-row{display:grid;grid-template-columns:34px 32px 1fr auto;align-items:center;gap:10px;padding:9px 12px;border-radius:var(--radius-sm);border:1px solid transparent}.lb-row.promote{background:color-mix(in srgb,var(--success) 7%,transparent)}.lb-row.demote{background:color-mix(in srgb,var(--danger) 7%,transparent)}.lb-row.me{border-color:var(--brand);background:var(--brand-soft)}.lb-pos{font-family:var(--font-display);font-weight:700;color:var(--ink-faint);text-align:center}.lb-row.me .lb-pos{color:var(--brand-ink)}.lb-face{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;border:1px solid var(--line);background:var(--surface-2);color:var(--ink-faint);font-family:var(--font-display);font-size:.66rem;font-weight:700;overflow:hidden}.lb-face img{width:100%;height:100%;object-fit:cover}.lb-row.me .lb-face{border-color:color-mix(in srgb,var(--brand) 55%,transparent);box-shadow:0 0 14px -7px var(--brand)}.lb-name{font-weight:600;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lb-row.me .lb-name{color:var(--brand-ink);font-weight:700}.lb-xp{display:inline-flex;align-items:center;gap:5px;font-family:var(--font-display);font-weight:700;font-size:.9rem;color:var(--ink-soft)}.lb-xp svg{color:var(--xp)}.lb-divider{font-size:.64rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:5px 12px;color:var(--ink-faint)}.lb-divider.promote-line{color:var(--success-ink)}.lb-divider.demote-line{color:var(--danger)}@media(max-width:820px){.tk-side-profile-meta,.tk-side-profile-ring{display:none}.tk-side-profile{justify-content:center;padding:9px 0}}@media(max-width:620px){.tk-prog-main{align-items:flex-start;flex-wrap:wrap}.tk-prog-avatar{width:72px;height:72px;border-radius:16px}.tk-prog-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.lb-timer{flex:1}.lb-pip span{display:none}.lb-pip img{width:32px;height:32px}}.shop{display:flex;flex-direction:column;gap:22px}.shop-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.shop-balance{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:14px;border:1px solid var(--line);background:var(--surface-glass);font-family:var(--font-display);font-weight:700;font-size:1.15rem;color:var(--ink);white-space:nowrap}.shop-balance svg{color:var(--gem)}.shop-rewards{display:flex;align-items:center;gap:14px;padding:14px 18px}.shop-rewards-ico{display:grid;place-items:center;width:42px;height:42px;flex:none;border-radius:12px;color:var(--rank-color, var(--brand-ink));background:color-mix(in srgb,var(--rank-color, var(--brand)) 14%,transparent);border:1px solid color-mix(in srgb,var(--rank-color, var(--brand)) 35%,transparent);overflow:hidden}.shop-rewards-ico img{width:100%;height:100%;object-fit:cover;border-radius:10px}.shop-rewards-body{display:flex;flex-direction:column;gap:3px;font-size:.92rem}.shop-rewards-body span{color:var(--ink-soft)}.shop-rewards-body b{color:var(--brand-ink)}.shop-section-title{font-family:var(--font-display);font-size:1.05rem;margin:0 0 12px}.shop-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}.shop-card{display:flex;flex-direction:column;padding:0;overflow:hidden}.shop-card.done{opacity:.82}.shop-card-body{display:flex;flex-direction:column;gap:6px;padding:14px 16px 10px;flex:1}.shop-card-body h3{margin:0;font-size:1.02rem}.shop-tagline{margin:0;font-size:.85rem;color:var(--brand-ink);font-weight:600}.shop-effect{margin:0;font-size:.82rem;line-height:1.45;color:var(--ink-soft)}.shop-note{margin-top:auto;padding-top:6px;font-size:.78rem;font-weight:600;color:var(--success-ink)}.shop-note.muted{color:var(--ink-faint)}.shop-art{aspect-ratio:16 / 8;display:grid;place-items:center;background:radial-gradient(120% 110% at 15% 0%,color-mix(in srgb,var(--brand) 16%,transparent),transparent 60%),radial-gradient(120% 120% at 90% 100%,color-mix(in srgb,var(--brand-2, #22d3ee) 14%,transparent),transparent 55%),var(--surface-glass);border-bottom:1px solid var(--line)}.shop-art img{width:100%;height:100%;object-fit:cover}.shop-art-ph{display:flex;flex-direction:column;align-items:center;gap:6px;color:color-mix(in srgb,var(--brand-ink) 70%,var(--ink-faint))}.shop-art-ph em{font-style:normal;font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint)}.shop-card-foot{display:flex;align-items:center;gap:10px;padding:10px 16px 14px}.shop-buy{display:inline-flex;align-items:center;gap:6px;padding:8px 16px}.shop-buy:disabled{opacity:.5;cursor:default}.shop-flash{font-size:.78rem;font-weight:600}.shop-flash.ok{color:var(--success-ink)}.shop-flash.err{color:var(--warn)}.shop-flash.muted{color:var(--ink-faint)}.tk-counter-boost{color:var(--brand-ink);border-color:color-mix(in srgb,var(--brand) 55%,transparent)!important;animation:surge-glow 2.2s ease-in-out infinite}@keyframes surge-glow{0%,to{box-shadow:0 0 0 0 transparent}50%{box-shadow:0 0 10px color-mix(in srgb,var(--brand) 45%,transparent)}}.streak-badge.aurora .tk-streak-flame{animation:aurora-shift 6s linear infinite}@keyframes aurora-shift{0%{color:#8b5cf6}25%{color:#22d3ee}50%{color:#34d399}75%{color:#f472b6}to{color:#8b5cf6}}.streak-badge .tk-streak-shield{display:inline-flex;align-items:center;gap:3px;margin-left:auto;font-size:.72rem;font-weight:700;color:var(--brand-ink)}.pj{max-width:780px;margin:0 auto}.pj-empty{display:flex;align-items:center;gap:18px;padding:22px}.pj-empty p{margin:0;color:var(--ink-soft)}.pj-hero{display:flex;gap:18px;align-items:center;justify-content:space-between;padding:20px;margin-bottom:22px;border:1px solid var(--line)}.pj-hero.complete{border-color:color-mix(in srgb,var(--success) 45%,transparent);background:var(--success-soft)}.pj-hero-body{flex:1;min-width:0}.pj-hero-eyebrow{display:inline-flex;align-items:center;gap:6px;font-size:.68rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--brand-ink)}.pj-outcome{margin:8px 0 14px;color:var(--ink);font-size:1.02rem;line-height:1.5}.pj-progress{display:flex;align-items:center;gap:12px}.pj-progress .bar,.pj-progress>:first-child{flex:1}.pj-progress-num{font-size:.8rem;color:var(--ink-faint);font-weight:700;white-space:nowrap}.pj-badge{display:flex;flex-direction:column;align-items:center;gap:3px;text-align:center;width:116px;flex:none;padding:14px 10px;border-radius:var(--radius);border:1px dashed var(--line-strong);color:var(--ink-faint)}.pj-badge span{font-family:var(--font-display);font-weight:700;font-size:.82rem;color:var(--ink-soft);line-height:1.15}.pj-badge small{font-size:.66rem;color:var(--ink-faint)}.pj-badge.earned{border-style:solid;border-color:color-mix(in srgb,var(--warn) 55%,transparent);background:var(--warn-soft);color:var(--warn)}.pj-badge.earned span,.pj-badge.earned small{color:var(--warn)}.pj-list{list-style:none;margin:0;padding:0}.pj-ms{display:grid;grid-template-columns:34px 1fr;gap:14px}.pj-ms-rail{display:flex;flex-direction:column;align-items:center}.pj-ms-dot{width:30px;height:30px;flex:none;border-radius:50%;display:grid;place-items:center;font-family:var(--font-display);font-weight:700;font-size:.85rem;border:2px solid var(--line-strong);background:var(--surface);color:var(--ink-faint)}.pj-ms-line{flex:1;width:2px;min-height:18px;background:var(--line);margin:4px 0}.pj-ms.available>.pj-ms-rail .pj-ms-dot{border-color:var(--brand);color:var(--brand-ink);box-shadow:0 0 0 4px var(--brand-soft)}.pj-ms.done>.pj-ms-rail .pj-ms-dot{border-color:var(--success);background:var(--success);color:#fff}.pj-ms.capstone>.pj-ms-rail .pj-ms-dot{border-color:var(--warn)}.pj-ms-card{padding:16px 18px;margin-bottom:14px}.pj-ms.locked .pj-ms-card{opacity:.72}.pj-ms-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.pj-ms-head h3{margin:4px 0 0;font-size:1.08rem}.pj-ms-tag{font-size:.64rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-ink)}.pj-ms.capstone .pj-ms-tag{color:var(--warn)}.pj-ms-reward{display:inline-flex;align-items:center;gap:5px;font-family:var(--font-display);font-weight:700;font-size:.82rem;color:var(--ink-soft);white-space:nowrap}.pj-ms-reward svg:first-child{color:var(--xp)}.pj-ms-reward svg:nth-of-type(2){color:var(--gem)}.pj-ms-brief{margin-top:8px;color:var(--ink-soft);font-size:.93rem;line-height:1.55}.pj-ms-brief p{margin:0 0 8px}.pj-ms-donerow{display:flex;align-items:center;justify-content:space-between;margin-top:12px}.pj-ms-donetag{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:.85rem;color:var(--success-ink)}.pj-ms-lock{display:flex;align-items:center;gap:8px;margin-top:12px;font-size:.86rem;color:var(--ink-faint)}.pj-ms-lesslink{color:var(--brand-ink);font-weight:600;text-decoration:underline;text-underline-offset:2px;padding:0;background:none;border:none}.pj-ms-play{margin-top:14px}.pj-ms-play .playground{margin-bottom:10px}.pj-complete{display:flex;align-items:center;gap:16px;padding:18px 20px;margin-top:8px;border:1px solid color-mix(in srgb,var(--success) 45%,transparent);background:var(--success-soft)}.pj-complete h3{margin:0 0 4px}.pj-complete p{margin:0;color:var(--ink-soft)}.tk-cert{border:1px solid color-mix(in srgb,var(--brand) 35%,var(--line));background:radial-gradient(130% 120% at 100% 0,color-mix(in srgb,var(--brand) 14%,transparent),transparent 62%),var(--surface)}.tk-cert-locked{border-color:var(--line);background:var(--surface)}.tk-cert-head{display:flex;align-items:flex-start;gap:14px}.tk-cert-head h4{margin:0 0 3px}.tk-cert-seal{display:grid;place-items:center;flex:none;width:46px;height:46px;border-radius:13px;color:var(--brand-ink);background:color-mix(in srgb,var(--brand) 18%,transparent);border:1px solid color-mix(in srgb,var(--brand) 32%,transparent)}.tk-cert-seal.locked{color:var(--ink-faint);background:var(--bg-soft);border-color:var(--line)}.tk-cert-claim{display:flex;flex-wrap:wrap;align-items:flex-end;gap:10px;margin-top:14px}.tk-cert-claim .account-input{flex:1 1 220px;margin:0}.tk-cert-label{flex:1 0 100%;font-size:.78rem;color:var(--ink-soft)}.tk-cert-actions{margin-top:14px}.tk-cert-notice{margin-top:10px;font-size:.82rem}.tk-cert-verified{color:var(--success-ink);font-weight:600}.tk-cert-unverified{color:var(--ink-faint)}.pf-project{padding:14px 0;border-top:1px solid var(--line)}.pf-project:first-of-type{border-top:none}.pf-project-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.pf-kit-btn{font-size:.8rem;padding:6px 12px}.pf-artifact-actions{display:flex;justify-content:flex-end;padding:0 12px 10px}.pf-project-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.pf-project-title{font-family:var(--font-display);font-weight:700;color:var(--ink)}.pf-project-sub{font-size:.78rem;color:var(--ink-faint)}.pf-badge{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:var(--radius-pill);background:var(--warn-soft);color:var(--warn);font-weight:700;font-size:.76rem;white-space:nowrap}.pf-artifacts{margin-top:10px;display:flex;flex-direction:column;gap:6px}.pf-artifact summary{cursor:pointer;display:flex;align-items:center;gap:7px;font-size:.86rem;font-weight:600;color:var(--success-ink);padding:6px 8px;border-radius:var(--radius-sm);list-style:none}.pf-artifact summary::-webkit-details-marker{display:none}.pf-artifact summary:hover{background:var(--surface-2)}.pf-artifact pre{margin:6px 0 4px;padding:12px;border-radius:var(--radius-sm);background:var(--bg-soft);border:1px solid var(--line);color:var(--ink-soft);font-size:.82rem;white-space:pre-wrap;word-break:break-word;max-height:260px;overflow:auto}@media(max-width:620px){.pj-hero{flex-direction:column;align-items:stretch}.pj-badge{width:auto;flex-direction:row;justify-content:center;gap:8px}}.hd{width:100%;max-width:920px;margin:0 auto;padding:28px 24px 64px;display:flex;flex-direction:column;gap:22px}.hd-browse{align-self:flex-start;display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:var(--radius-pill);border:1px solid var(--line-strong);background:var(--surface);color:var(--ink-soft);font-size:.86rem;font-weight:600;transition:transform .1s ease,border-color .15s ease,color .15s ease}.hd-browse svg{color:var(--brand-bright)}.hd-browse:hover{transform:translateY(-2px);color:var(--ink);border-color:var(--brand)}.hd-panel{border:1px solid var(--line);border-radius:var(--radius-lg);background:radial-gradient(120% 90% at 92% 0%,rgba(124,58,237,.1),transparent 55%),var(--surface);box-shadow:var(--shadow-md);padding:26px;display:flex;flex-direction:column;gap:22px}.hd-eyebrow{text-transform:uppercase;letter-spacing:.1em;font-size:.68rem;font-weight:700;color:var(--ink-faint)}.hd-cur-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.hd-cur h1{font-family:var(--font-display);font-size:2rem;letter-spacing:0;margin:6px 0 0}.hd-viewpath{flex:none;display:inline-flex;align-items:center;gap:6px;background:none;border:none;padding:6px 2px;color:var(--brand-bright);font-size:.85rem;font-weight:600}.hd-viewpath:hover{color:var(--brand)}.hd-bar{height:9px;border-radius:var(--radius-pill);background:var(--bg-soft);overflow:hidden;margin-top:14px}.hd-bar>span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--brand) 0%,var(--brand-2) 100%);transition:width .5s cubic-bezier(.22,1,.36,1)}.hd-pct{display:block;margin-top:7px;font-size:.82rem;font-weight:600;color:var(--ink-soft)}.hd-lesson{display:grid;grid-template-columns:1fr auto;gap:18px;padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-2)}.hd-lesson-main{min-width:0;display:flex;flex-direction:column;align-items:flex-start}.hd-lesson-num{font-size:.76rem;font-weight:700;color:var(--ink-faint)}.hd-lesson-main h2{font-family:var(--font-display);font-size:1.55rem;letter-spacing:0;margin:6px 0 8px}.hd-lesson-main p{color:var(--ink-soft);font-size:.96rem;margin:0;max-width:46ch}.hd-time{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:.82rem;color:var(--ink-faint)}.hd-continue{display:inline-flex;align-items:center;gap:8px;margin-top:18px;border:none;border-radius:var(--radius-sm);padding:12px 24px;font-size:.82rem;font-weight:700;letter-spacing:.03em;text-transform:uppercase;color:#fff;background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);box-shadow:0 6px 18px #8b5cf659;transition:transform .1s ease,box-shadow .18s ease}.hd-continue:hover{transform:translateY(-2px);box-shadow:0 8px 26px #8b5cf680}.hd-lesson-done .hd-continue{background:linear-gradient(135deg,var(--success) 0%,var(--success-deep) 100%);box-shadow:0 6px 18px #22c55e59}.hd-lesson-side{display:flex;align-items:center;gap:14px}.hd-pando{width:116px;height:116px}.hd-flow{display:flex;flex-direction:column;gap:3px}.hd-flow-step{display:inline-flex;align-items:center;gap:7px;padding:8px 14px;border-radius:var(--radius-sm);font-size:.82rem;font-weight:600;border:1px solid var(--line-strong);background:var(--surface)}.hd-flow-step.learn{color:var(--brand2-ink);border-color:color-mix(in srgb,var(--brand-2) 45%,transparent)}.hd-flow-step.practice{color:var(--brand-ink);border-color:color-mix(in srgb,var(--brand) 45%,transparent)}.hd-flow-step.master{color:var(--success-ink);border-color:color-mix(in srgb,var(--success) 45%,transparent)}.hd-flow-arrow{text-align:center;color:var(--ink-faint);font-size:.8rem;line-height:1}.hd-path{display:flex;flex-direction:column;gap:12px}.hd-nodes{display:flex;flex-wrap:wrap;gap:8px}.hd-node{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;border:1px solid var(--line-strong);background:var(--bg-soft);color:var(--ink-faint);font-size:.74rem;font-weight:700;position:relative;overflow:hidden;transition:transform .1s ease,box-shadow .15s ease}.hd-node:not(:disabled){cursor:pointer}.hd-node:not(:disabled):hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}.hd-node.mastered,.hd-node.review-due{background:#22c55e2e;border-color:var(--success-deep);color:var(--success-bright)}.hd-node.review-due{background:#f5a5242e;border-color:var(--warn);color:var(--warn)}.hd-node.in-progress,.hd-node.available{background:#7c3aed38;border-color:var(--brand-bright);color:var(--brand-bright);box-shadow:0 0 0 3px var(--brand-soft)}.hd-node.locked{cursor:default;opacity:.85}.hd-node svg{position:relative;z-index:1;color:#fff}.hd-node.locked svg{color:var(--ink-faint)}.hd-node-tiles{position:absolute;top:5px;right:5px;bottom:5px;left:5px;display:grid;grid-template-columns:repeat(2,1fr);gap:3px}.hd-node-tiles i{border-radius:3px;background:currentColor;opacity:.55}@media(max-width:640px){.hd{padding:20px 16px 48px}.hd-lesson{grid-template-columns:1fr}.hd-lesson-side{justify-content:flex-start}}.lp{--ink: #f6f3ff;--ink-soft: #bbb4ca;--ink-faint: #9088a8;--line: rgba(255, 255, 255, .1);--line-strong: rgba(162, 111, 255, .38);--surface-glass: rgba(13, 14, 42, .58);--bg-soft: #191333;--brand: #8b5cf6;--brand-deep: #6428f4;--brand-bright: #b969ff;--brand-2: #31d9f5;--success: #16e5a4;--success-deep: #12b88a;--success-bright: #24f0bf;--radius-sm: 11px;--radius-lg: 24px;--radius-pill: 999px;--shadow-lg: 0 32px 74px rgba(0, 0, 0, .62);--glow-brand: 0 0 34px rgba(139, 92, 246, .56);--lp-content: 1412px;position:relative;isolation:isolate;min-height:100vh;min-height:100dvh;width:100%;overflow-x:hidden;display:flex;flex-direction:column;padding:30px clamp(24px,2.8vw,48px) 44px;color:var(--ink);background:radial-gradient(720px 470px at 61% 28%,rgba(95,48,238,.22),transparent 70%),radial-gradient(860px 520px at 72% 58%,rgba(34,211,238,.08),transparent 72%),#02030d}.lp:before{content:"";position:absolute;top:104px;left:0;right:0;height:1px;background:#ffffff14;z-index:1}.lp-aurora{position:absolute;top:0;right:0;bottom:0;left:0;overflow:hidden;pointer-events:none;z-index:0}.lp-aurora span{position:absolute;border-radius:50%;filter:blur(108px);opacity:.42}.lp-aurora-a{top:-18%;left:30%;width:42vw;height:42vw;background:radial-gradient(circle,rgba(124,58,237,.36),transparent 72%)}.lp-aurora-b{top:7%;right:-9%;width:35vw;height:35vw;background:radial-gradient(circle,rgba(34,211,238,.16),transparent 70%)}.lp-aurora-c{bottom:-24%;left:-10%;width:36vw;height:36vw;background:radial-gradient(circle,rgba(139,92,246,.18),transparent 72%)}.lp-nav,.lp-hero,.lp-features,.lp-outro,.lp-footer{position:relative;z-index:2}.lp-nav{width:100%;height:52px;margin:0 auto 23px;display:flex;align-items:center;gap:20px}.lp-brand{display:inline-flex;align-items:center;gap:17px;background:none;border:none;padding:0;color:var(--ink);font-family:var(--font-display);font-size:1.52rem;font-weight:700;letter-spacing:.24em;line-height:1;text-transform:uppercase;text-shadow:0 0 14px rgba(255,255,255,.18)}.lp-brand svg{flex:none;filter:drop-shadow(0 0 14px rgba(139,92,246,.55))}.lp-nav-links{margin-left:auto;display:flex;align-items:center;gap:50px}.lp-nav-links button{background:none;border:none;padding:4px 2px;color:#f6f3ffdb;font-size:1.12rem;font-weight:500;transition:color .15s ease,text-shadow .15s ease}.lp-nav-links button:hover{color:#fff;text-shadow:0 0 14px rgba(185,105,255,.38)}.lp-start{width:151px;height:51px;margin-left:8px;border:1px solid rgba(168,109,255,.55);border-radius:var(--radius-sm);padding:0 22px;font-size:1.12rem;font-weight:700;color:#fff;background:linear-gradient(135deg,#7245ff,#5d26f3);box-shadow:0 0 28px #7c3aed70;transition:transform .1s ease,box-shadow .18s ease}.lp-start:hover{transform:translateY(-1px);box-shadow:0 0 34px #7c3aed9e}.lp-hero{width:100%;max-width:1412px;min-height:538px;margin:0 auto;flex:none;display:grid;grid-template-columns:590px minmax(410px,1fr) 322px;align-items:center;align-content:start;gap:20px;padding:52px 0 0}.lp-copy{position:relative;z-index:3;grid-column:1;align-self:start;min-width:0}.lp-badge{display:inline-flex;align-items:center;gap:7px;min-height:42px;padding:10px 17px;border-radius:16px;border:1px solid rgba(178,96,255,.32);background:#0708189e;box-shadow:inset 0 0 0 1px #ffffff05;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);font-size:.94rem;font-weight:700;letter-spacing:.06em;line-height:1;text-transform:uppercase}.lp-badge .a{color:#c474ff}.lp-badge .b{color:#27e7ef}.lp-title{font-family:var(--font-display);font-size:clamp(4.05rem,5.08vw,5.32rem);line-height:1.08;letter-spacing:0;font-weight:700;color:var(--ink);margin:35px 0 0;max-width:none;white-space:nowrap;text-shadow:0 6px 28px rgba(255,255,255,.08)}.lp-grad{background:linear-gradient(100deg,#9a55ff 10%,#34dff1);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.lp-blurb{color:#e0dae7d1;font-size:1.34rem;line-height:1.58;max-width:570px;margin:22px 0 0}.lp-cta-row{display:flex;align-items:center;flex-wrap:wrap;gap:32px;margin-top:33px}.lp-cta,.lp-cta-ghost{display:inline-flex;align-items:center;justify-content:center;height:64px;border-radius:var(--radius-sm);font-size:1.18rem;transition:transform .1s ease,box-shadow .18s ease,border-color .15s ease,color .15s ease}.lp-cta{min-width:285px;gap:19px;border:1px solid rgba(168,109,255,.42);padding:0 31px;font-weight:700;color:#fff;background:linear-gradient(135deg,#6f3cff,#5922f3);box-shadow:0 10px 34px #6530f48f}.lp-cta svg{width:26px;height:26px}.lp-cta:hover{transform:translateY(-2px);box-shadow:0 0 42px #8b5cf6a8}.lp-cta:active{transform:translateY(0)}.lp-cta-ghost{min-width:246px;gap:16px;border:1px solid rgba(255,255,255,.14);background:#08091b94;color:#f6f3ffe0;padding:0 29px;font-weight:600;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.lp-cta-ghost svg{width:26px;height:26px;color:#b969ff}.lp-cta-ghost:hover{transform:translateY(-2px);border-color:#b969ff8f;color:#fff;box-shadow:0 0 26px #7c3aed3d}.lp-mascot{position:relative;z-index:1;grid-column:2;grid-row:1;justify-self:center;align-self:center;display:grid;place-items:center;width:100%;min-height:538px;margin:0 -74px 0 -84px;pointer-events:none}.lp-mascot:before,.lp-orbit{display:none}.lp-panda{position:relative;z-index:1;width:clamp(640px,45vw,725px);max-width:none;height:auto;mix-blend-mode:screen;filter:brightness(1.06) contrast(1.05) drop-shadow(0 0 46px rgba(34,211,238,.18));transform:translateY(-4px);animation:none;-webkit-mask-image:radial-gradient(ellipse at center,#000 0%,#000 62%,rgba(0,0,0,.84) 78%,transparent 100%);mask-image:radial-gradient(ellipse at center,#000 0%,#000 62%,rgba(0,0,0,.84) 78%,transparent 100%)}.lp-card{position:relative;z-index:3;grid-column:3;align-self:center;justify-self:end;width:318px;min-height:414px;margin:-35px -48px 0 0;border:1px solid rgba(148,103,255,.52);border-radius:22px;background:radial-gradient(120% 96% at 0% 0%,rgba(92,65,255,.24),transparent 48%),linear-gradient(180deg,#ffffff0e,#ffffff05),#0d0f31ad;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 0 48px #5f30ee38,0 28px 70px #00000094;padding:27px 24px;display:flex;flex-direction:column;gap:20px;transform:perspective(900px) rotate(2deg);transform-origin:center}.lp-card-title{font-family:var(--font-display);font-size:1.06rem;font-weight:700;margin:0 0 5px;color:#fff}.lp-steps{display:flex;flex-direction:column;gap:7px}.lp-step{position:relative;display:flex;align-items:center;gap:13px;padding:10px 8px;border-radius:12px;border:1px solid transparent}.lp-step.current{min-height:100px;margin:3px -8px 0;padding:15px;background:radial-gradient(circle at 86% 42%,rgba(185,105,255,.28),transparent 12%),#6232f438;border-color:#925cffad;box-shadow:inset 0 0 28px #7c3aed2e}.lp-step-badge{position:relative;flex:none;width:33px;height:33px;border-radius:50%;display:grid;place-items:center;font-size:1rem;font-weight:700;color:#fff}.lp-step.done .lp-step-badge{color:#07131d;background:linear-gradient(135deg,#19f2b6,#11c894);box-shadow:0 7px 22px #16e5a475}.lp-step.current .lp-step-badge{width:38px;height:38px;background:linear-gradient(135deg,#8a5cff,#5d28ff);box-shadow:0 0 0 4px #8b5cf633,0 0 24px #8b5cf6b8}.lp-step:not(:last-child) .lp-step-badge:after{content:"";position:absolute;top:calc(100% + 6px);left:50%;transform:translate(-50%);width:0;height:22px;border-left:2px dashed rgba(22,229,164,.74)}.lp-step-body{display:flex;flex-direction:column;min-width:0}.lp-step-title{font-size:1rem;font-weight:600;line-height:1.2;color:var(--ink)}.lp-step-meta{font-size:.78rem;color:#e0dae7a8;margin-top:6px}.lp-card-foot{margin-top:auto}.lp-card-count{display:block;font-size:.88rem;color:#e0dae7b8;margin-bottom:12px}.lp-card-bar{height:8px;border-radius:var(--radius-pill);background:#ffffff1f;overflow:hidden}.lp-card-bar>span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#8861ff,#5c28ff);box-shadow:0 0 16px #8b5cf6b8}.lp-features{width:100%;max-width:var(--lp-content);margin:40px auto 0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.lp-feature{display:flex;align-items:flex-start;gap:16px;padding:22px 22px 24px;border:1px solid rgba(255,255,255,.1);border-radius:18px;background:radial-gradient(120% 100% at 0% 0%,rgba(124,58,237,.1),transparent 55%),#0d0e2a80;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:transform .16s ease,border-color .18s ease,box-shadow .2s ease}@media(hover:hover){.lp-feature:hover{transform:translateY(-3px);border-color:#a26fff73;box-shadow:0 14px 38px -14px #5f30ee80}}.lp-feature-ico{flex:none;display:grid;place-items:center;width:52px;height:52px;border-radius:14px;border:1px solid rgba(162,111,255,.34);background:#7c3aed29;color:#b98aff;filter:drop-shadow(0 0 14px rgba(124,58,237,.4))}.lp-feature-ico svg{width:26px;height:26px;stroke-width:1.8}.lp-feature-body h4{font-family:var(--font-display);font-size:1.16rem;font-weight:700;line-height:1.2;margin:4px 0 8px;color:#fff}.lp-feature-body p{color:#e0dae7b8;font-size:.97rem;line-height:1.5;margin:0}.lp-outro{width:100%;max-width:var(--lp-content);margin:72px auto 0;padding:clamp(38px,5vw,58px) 28px;text-align:center;border:1px solid rgba(148,103,255,.4);border-radius:var(--radius-lg);background:radial-gradient(90% 130% at 50% 0%,rgba(92,65,255,.2),transparent 60%),#0d0f3199;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 0 54px #5f30ee2e,0 30px 70px #00000080}.lp-outro h2{font-family:var(--font-display);font-size:clamp(1.9rem,3.4vw,2.7rem);font-weight:700;line-height:1.14;margin:0;color:var(--ink)}.lp-outro p{color:#e0dae7c7;font-size:1.12rem;line-height:1.55;max-width:560px;margin:14px auto 0}.lp-outro-cta{display:flex;justify-content:center;margin-top:28px}.lp-outro-note{display:block;margin-top:16px;font-size:.85rem;letter-spacing:.02em;color:#e0dae78c}.lp-footer{width:100%;max-width:var(--lp-content);margin:56px auto 0;padding-top:24px;border-top:1px solid rgba(255,255,255,.09);display:flex;align-items:center;gap:22px;flex-wrap:wrap}.lp-footer-brand{display:inline-flex;align-items:center;gap:11px;background:none;border:none;padding:0;color:var(--ink);font-family:var(--font-display);font-size:.98rem;font-weight:700;letter-spacing:.2em;text-transform:uppercase}.lp-footer-links{display:flex;align-items:center;flex-wrap:wrap;justify-content:center;gap:12px 26px;margin-left:auto}.lp-footer-links button{background:none;border:none;padding:4px 2px;color:#e0dae7a8;font-size:.95rem;font-weight:500;transition:color .15s ease}.lp-footer-links button:hover{color:#fff}@media(max-width:640px){.lp-footer-links{gap:8px 16px}.lp-footer-links button{font-size:.88rem}}.lp-footer-copy{flex-basis:100%;font-size:.82rem;color:#e0dae773}@media(max-width:1280px){.lp{--lp-content: 1120px}.lp-hero{max-width:1120px;grid-template-columns:minmax(420px,1fr) minmax(330px,390px) 302px}.lp-title{font-size:clamp(3.6rem,5.4vw,4.6rem)}.lp-blurb{font-size:1.2rem}.lp-panda{width:clamp(570px,50vw,660px)}.lp-card{width:302px;margin-right:-18px}}@media(max-width:1120px){.lp{--lp-content: 940px;padding-top:24px}.lp:before{top:92px}.lp-nav{height:48px;margin-bottom:18px}.lp-brand{gap:13px;font-size:1.24rem}.lp-brand svg{width:44px;height:44px}.lp-nav-links{gap:28px}.lp-start{width:136px;height:48px}.lp-hero{max-width:940px;min-height:0;grid-template-columns:minmax(0,1fr) 320px;grid-template-areas:"copy card" "mascot mascot";align-content:center;row-gap:8px;padding-top:38px}.lp-copy{grid-area:copy}.lp-card{grid-area:card;width:100%;max-width:320px;min-height:390px;margin:0;transform:none}.lp-mascot{grid-area:mascot;min-height:auto;margin:0;padding-top:16px}.lp-panda{width:min(92vw,700px)}.lp-features{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}}@media(max-width:760px){.lp{padding:20px 18px 34px}.lp:before{top:78px}.lp-nav{height:42px;margin-bottom:12px}.lp-brand{gap:10px;font-size:1rem;letter-spacing:.18em}.lp-brand svg{width:38px;height:38px}.lp-nav-links{display:none}.lp-start{width:auto;min-width:112px;height:42px;padding:0 15px;font-size:.95rem}.lp-hero{grid-template-columns:minmax(0,1fr);grid-template-areas:"copy" "mascot" "card";row-gap:24px;text-align:center;align-content:start;padding-top:28px}.lp-badge{font-size:.78rem;min-height:36px;padding:9px 13px}.lp-title,.lp-blurb{max-width:none}.lp-title{font-size:clamp(3.1rem,13vw,4.2rem);white-space:normal;margin-top:25px}.lp-title-br{display:none}.lp-blurb{font-size:1.08rem}.lp-cta-row{justify-content:center;gap:14px}.lp-cta,.lp-cta-ghost{width:min(100%,320px)}.lp-card{max-width:420px;width:100%;margin:0 auto;text-align:left}.lp-panda{width:min(100%,560px)}.lp-features{grid-template-columns:1fr;gap:14px}.lp-outro{margin-top:52px}.lp-outro-cta .lp-cta{width:min(100%,320px)}.lp-footer{flex-direction:column;text-align:center;gap:16px}.lp-footer-links{margin-left:0}.lp-footer-copy{flex-basis:auto}}@media(prefers-reduced-motion:reduce){.lp-start,.lp-cta,.lp-cta-ghost,.lp-nav-links button{transition:none}}.legal{min-height:100vh;min-height:100dvh;padding:22px clamp(16px,5vw,48px) 64px;display:flex;flex-direction:column;align-items:center;gap:18px;background:var(--bg)}.legal-nav{width:100%;max-width:860px;display:flex;align-items:center;justify-content:space-between}.legal-brand{display:inline-flex;align-items:center;gap:10px;background:none;border:none;font-family:var(--font-display);font-weight:700;font-size:1.15rem;color:var(--ink)}.legal-back{display:inline-flex;align-items:center;gap:6px}.legal-doc{width:100%;max-width:860px;padding:clamp(24px,4vw,44px)}.legal-doc h1{margin:0 0 4px;font-size:1.7rem}.legal-updated{margin:0 0 22px;font-size:.85rem;color:var(--ink-faint)}.legal-doc section{margin-bottom:22px}.legal-doc h2{font-size:1.05rem;margin:0 0 8px}.legal-doc p,.legal-doc li{font-size:.92rem;line-height:1.65;color:var(--ink-soft)}.legal-doc p{margin:0 0 10px}.legal-doc ul{margin:0 0 10px;padding-left:22px}.legal-doc li{margin-bottom:6px}.legal-doc strong{color:var(--ink)}.legal-doc a{color:var(--brand-ink)}.legal-doc code{font-size:.85em}.legal-foot{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding-top:16px;margin-top:8px;font-size:.85rem;color:var(--ink-faint)}.legal-link{background:none;border:none;padding:0;color:var(--brand-ink);font-weight:600;font-size:.85rem}.legal-link:hover{text-decoration:underline}.account-consent{margin-top:10px;font-size:.78rem;color:var(--ink-faint)}.account-consent button{background:none;border:none;padding:0;color:var(--brand-ink);font-weight:600;text-decoration:underline;font-size:inherit}.lp-footer-legal{display:flex;gap:14px}.auth-gate{min-height:100vh;min-height:100dvh;padding:22px clamp(16px,5vw,48px) calc(48px + env(safe-area-inset-bottom,0px));display:flex;flex-direction:column;align-items:center;gap:26px;background:var(--bg)}.auth-gate-nav{width:100%;max-width:860px;display:flex;align-items:center;justify-content:space-between}.auth-gate-card{width:100%;max-width:460px;margin-top:clamp(6px,8vh,84px);text-align:center}.auth-gate-card h1{font-size:1.45rem;margin:6px 0 8px}.auth-gate-actions{flex-direction:column;align-items:stretch;margin-top:14px;gap:9px}.verify-page{min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;padding:40px 20px;background:radial-gradient(120% 90% at 20% 10%,color-mix(in srgb,var(--brand) 16%,transparent),transparent 60%),var(--bg)}.verify-brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:800;letter-spacing:.14em;color:var(--ink);text-decoration:none}.verify-card{width:100%;max-width:520px;text-align:center;padding:34px 30px}.verify-card h1{font-size:1.6rem;margin:14px 0 6px}.verify-seal{display:inline-grid;place-items:center;width:62px;height:62px;border-radius:50%;font-size:1.5rem;font-weight:700}.verify-seal-ok{color:var(--success-ink);background:var(--success-soft);border:1px solid color-mix(in srgb,var(--success) 40%,transparent)}.verify-seal-no{color:var(--ink-faint);background:var(--bg-soft);border:1px solid var(--line)}.verify-lede{color:var(--ink-soft);margin:0 0 18px}.verify-detail{text-align:left;border-top:1px solid var(--line);padding-top:14px;margin-top:6px}.verify-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:8px 0;border-bottom:1px solid var(--line)}.verify-row span{color:var(--ink-faint);font-size:.85rem}.verify-row strong{display:inline-flex;align-items:center;gap:6px;color:var(--ink);text-align:right}.verify-id{font-family:ui-monospace,Cascadia Code,Consolas,monospace;letter-spacing:.04em}.verify-foot{margin:16px 0 0;font-size:.82rem;color:var(--ink-faint)}.verify-status{color:var(--ink-soft);margin:0}.verify-cta{color:var(--brand-ink);font-weight:600;text-decoration:none}.verify-cta:hover{text-decoration:underline}.tk-node-body,.tk-track-card,.section-card,.concept-tile,.hd-switch-pill,.lp-pill,.hd-node,.option,.conf-btn,.tk-side-item,.tk-outline-module,.hd-panel,.hd-lesson,.lp-app,.tk-rail-card,.btn-primary,.btn-ghost,.lp-login{position:relative;--glow: var(--brand-bright)}.lp-pill,.hd-switch-pill{--glow: var(--pill-accent, var(--brand-bright))}.tk-track-card,.section-card,.concept-tile,.tk-outline-module{--glow: var(--tint, var(--brand-bright))}.hd-node.mastered,.hd-node.review-due,.option.correct{--glow: var(--success-bright)}.option.wrong{--glow: var(--danger)}@media(hover:hover){.tk-node-body:after,.tk-track-card:after,.section-card:after,.concept-tile:after,.hd-switch-pill:after,.lp-pill:after,.hd-node:after,.option:after,.conf-btn:after,.tk-side-item:after,.tk-outline-module:after,.hd-panel:after,.hd-lesson:after,.lp-app:after,.tk-rail-card:after,.btn-primary:after,.btn-ghost:after,.lp-login:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:inherit;padding:1.4px;background:radial-gradient(170px circle at var(--gx, 50%) var(--gy, 50%),var(--glow) 0%,color-mix(in srgb,var(--glow) 45%,transparent) 26%,transparent 62%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);mask-composite:exclude;opacity:0;transition:opacity .28s ease;pointer-events:none;z-index:3}.tk-node-body:hover:not(:disabled):after,.tk-track-card:hover:after,.section-card.is-live:hover:after,.concept-tile:hover:after,.hd-switch-pill:hover:after,.lp-pill:hover:after,.hd-node:hover:not(:disabled):after,.option:hover:not(:disabled):after,.conf-btn:hover:after,.tk-side-item:hover:after,.tk-outline-module:hover:after,.hd-panel:hover:after,.hd-lesson:hover:after,.lp-app:hover:after,.tk-rail-card:hover:after,.btn-primary:hover:not(:disabled):after,.btn-ghost:hover:not(:disabled):after,.lp-login:hover:after{opacity:1}.option.correct:after,.option.wrong:after{opacity:.85}.tk-node-body:hover:not(:disabled),.tk-track-card:hover,.section-card.is-live:hover,.concept-tile:hover,.hd-switch-pill:hover,.lp-pill:hover,.conf-btn:hover,.tk-outline-module:hover,.hd-panel:hover,.hd-lesson:hover,.lp-app:hover,.tk-rail-card:hover{box-shadow:var(--shadow-md),0 0 26px -6px color-mix(in srgb,var(--glow) 42%,transparent)}.option:hover:not(:disabled){box-shadow:0 0 22px -8px color-mix(in srgb,var(--glow) 55%,transparent)}.hd-node:hover:not(:disabled){box-shadow:0 0 16px -3px color-mix(in srgb,var(--glow) 60%,transparent);transform:translateY(-2px)}.tk-side-item:hover{box-shadow:0 0 18px -8px color-mix(in srgb,var(--glow) 55%,transparent)}}.btn-primary,.lp-cta,.hd-continue,.lp-continue{position:relative;overflow:hidden;isolation:isolate}.btn-primary:before,.lp-cta:before,.hd-continue:before,.lp-continue:before{content:"";position:absolute;top:0;left:-140%;width:55%;height:100%;background:linear-gradient(100deg,transparent,color-mix(in srgb,#fff 42%,transparent),transparent);transform:skew(-18deg);pointer-events:none;z-index:1;transition:left .6s cubic-bezier(.22,1,.36,1)}@media(hover:hover){.btn-primary:hover:not(:disabled):before,.lp-cta:hover:before,.hd-continue:hover:before,.lp-continue:hover:before{left:150%}}@keyframes ce-breathe{0%,to{box-shadow:0 0 0 1px color-mix(in srgb,var(--brand) 28%,transparent),0 0 20px -6px color-mix(in srgb,var(--brand) 34%,transparent)}50%{box-shadow:0 0 0 1px color-mix(in srgb,var(--brand) 55%,transparent),0 0 30px -2px color-mix(in srgb,var(--brand) 55%,transparent)}}.tk-node-row.current .tk-node-body,.tk-node-row.current .tk-node.in-progress,.tk-node-row.current .tk-node.available{animation:ce-breathe 3.4s ease-in-out infinite}.tk-side-item.active{overflow:visible}.tk-side-item.active:before{content:"";position:absolute;left:-2px;top:50%;transform:translateY(-50%);width:3px;height:56%;border-radius:3px;background:linear-gradient(var(--brand-bright),var(--brand-2));box-shadow:0 0 10px var(--brand),0 0 4px var(--brand-bright);z-index:2}@media(prefers-reduced-motion:reduce){.tk-node-row.current .tk-node-body,.tk-node-row.current .tk-node.in-progress,.tk-node-row.current .tk-node.available{animation:none}.btn-primary:before,.lp-cta:before,.hd-continue:before,.lp-continue:before{transition:none}}