@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap";:root{--bg-base: #0E0F13;--bg-sidebar: #161820;--bg-card: #1C1E27;--bg-card-hover: #21243000;--border-card: #2A2D3A;--border-subtle: #1F2130;--text-primary: #E8EAED;--text-secondary: #7B8099;--text-disabled: #3A3D4A;--state-locked: #3A3D4A;--state-available: #4E9EFF;--state-inprogress: #93C5FD;--state-done: #22C55E;--state-challenge: #F97316;--stage-01: #00C896;--stage-02: #4E9EFF;--stage-03: #A855F7;--stage-04: #FF6B35;--stage-05: #F0C040;--stage-06: #FF4ECD;--stage-07: #60A5FA;--stage-08: #EF4444;--stage-09: #FBBF24;--stage-10: #FFE44D;--stage-current: var(--stage-01);--spacing-page-top: 32px;--spacing-card-gap: 16px;--spacing-card-pad: 20px 24px;--radius-card: 12px;--radius-small: 6px;--radius-pill: 999px;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--font-body: "Inter", "PingFang SC", "Noto Sans SC", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--sidebar-w: 60px;--transition-fast: .15s ease;--transition-medium: .2s ease;--transition-slow: .5s cubic-bezier(.34, 1.56, .64, 1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:clamp(14px,.4vw + 11px,24px);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-body);background-color:var(--bg-base);color:var(--text-primary);min-height:100vh;overflow-x:hidden;line-height:1.6;font-size:var(--text-base)}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer;border:none;background:none}.app-shell{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-w);min-width:var(--sidebar-w);max-width:var(--sidebar-w);height:100vh;position:sticky;top:0;display:flex;flex-direction:column;align-items:center;background-color:var(--bg-sidebar);border-right:1px solid var(--border-subtle);padding:12px 0;z-index:100}.sidebar-logo{width:32px;height:32px;border-radius:var(--radius-small);background:var(--stage-current);display:flex;align-items:center;justify-content:center;margin-bottom:24px;flex-shrink:0}.sidebar-nav{display:flex;flex-direction:column;align-items:center;gap:4px;flex:1}.nav-item{position:relative;width:44px;height:44px;border-radius:var(--radius-small);display:flex;align-items:center;justify-content:center;color:var(--text-disabled);transition:background-color var(--transition-fast),color var(--transition-fast)}.nav-item:hover{background-color:var(--bg-card);color:var(--text-primary)}.nav-item.active{background-color:color-mix(in srgb,var(--stage-current) 15%,transparent);color:var(--stage-current)}.nav-item:after{content:attr(data-tooltip);position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);background:var(--bg-card);border:1px solid var(--border-card);color:var(--text-primary);font-size:12px;font-weight:500;white-space:nowrap;padding:6px 10px;border-radius:var(--radius-small);opacity:0;pointer-events:none;transition:opacity var(--transition-fast);z-index:200}.nav-item:hover:after{opacity:1}.sidebar-bottom{display:flex;flex-direction:column;align-items:center}.main-content{flex:1;min-width:0;overflow-y:auto;min-height:100vh}.page-inner{max-width:1200px;margin:0 auto;padding:var(--spacing-page-top) 32px 64px}@media(min-width:1600px){.page-inner{padding-left:48px;padding-right:48px}}.home-header{margin-bottom:40px}.home-title{font-size:var(--text-2xl);font-weight:700;color:var(--text-primary);line-height:1.3;margin-bottom:8px}.home-subtitle{font-size:14px;color:var(--text-secondary);display:flex;align-items:center;gap:8px}.progress-pill{display:inline-flex;align-items:center;gap:6px;background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-pill);padding:4px 12px;font-size:12px;font-weight:500;color:var(--text-secondary)}.stage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--spacing-card-gap)}@media(min-width:1400px){.stage-grid{grid-template-columns:repeat(5,1fr)}}.stage-card{position:relative;background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-card);padding:var(--spacing-card-pad);padding-top:0;overflow:hidden;cursor:pointer;transition:transform var(--transition-fast),box-shadow var(--transition-fast),border-color var(--transition-fast);display:flex;flex-direction:column;align-items:center;text-align:center;gap:8px}.stage-card:before{content:"";display:block;width:100%;height:3px;background:var(--card-theme-color, var(--text-disabled));border-radius:var(--radius-card) var(--radius-card) 0 0;margin-bottom:16px;transition:height var(--transition-fast)}.stage-card:hover{transform:scale(1.03);border-color:var(--card-theme-color, var(--border-card));box-shadow:0 0 24px color-mix(in srgb,var(--card-theme-color, transparent) 20%,transparent)}.stage-card:hover:before{height:4px}.stage-card.locked{cursor:not-allowed;opacity:.5}.stage-card.locked:hover{transform:none;box-shadow:none}.stage-icon{width:64px;height:64px;color:var(--card-theme-color, var(--text-secondary))}.stage-label{font-size:10px;font-weight:600;letter-spacing:.1em;color:var(--text-disabled);text-transform:uppercase}.stage-title{font-size:var(--text-sm);font-weight:600;color:var(--text-primary);line-height:1.4}.progress-ring-wrap{display:flex;align-items:center;gap:6px;margin-top:4px}.progress-ring-wrap svg{transform:rotate(-90deg)}.progress-ring-text{font-size:11px;color:var(--text-secondary)}.stage-status{font-size:11px;font-weight:500;padding:2px 8px;border-radius:var(--radius-pill);margin-top:4px}.stage-status.locked{background:var(--bg-base);color:var(--text-disabled)}.stage-status.active{background:color-mix(in srgb,var(--card-theme-color) 15%,transparent);color:var(--card-theme-color)}.stage-status.completed{background:color-mix(in srgb,var(--state-done) 15%,transparent);color:var(--state-done)}.stage-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:40px;gap:16px}.stage-header-left{display:flex;align-items:center;gap:16px}.stage-header-icon{width:48px;height:48px;color:var(--stage-current);flex-shrink:0}.stage-header-text h1{font-size:22px;font-weight:700;color:var(--text-primary)}.stage-header-text p{font-size:13px;color:var(--text-secondary);margin-top:2px}.lesson-track{display:flex;gap:12px;overflow-x:auto;padding-bottom:16px;scrollbar-width:thin;scrollbar-color:var(--border-card) transparent}.lesson-node{position:relative;flex-shrink:0;width:60px;display:flex;flex-direction:column;align-items:center;gap:6px;cursor:pointer}.lesson-node-circle{width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;border:2px solid var(--border-card);background:var(--bg-card);color:var(--text-disabled);transition:border-color var(--transition-fast),color var(--transition-fast),box-shadow var(--transition-fast)}.lesson-node.available .lesson-node-circle{border-color:var(--state-available);color:var(--state-available);box-shadow:0 0 color-mix(in srgb,var(--state-available) 40%,transparent);animation:pulse-ring 2s ease-out infinite}.lesson-node.done .lesson-node-circle{border-color:var(--state-done);background:color-mix(in srgb,var(--state-done) 15%,transparent);color:var(--state-done)}.lesson-node.challenge-done .lesson-node-circle{border-color:var(--state-challenge);background:color-mix(in srgb,var(--state-challenge) 15%,transparent);color:var(--state-challenge)}.lesson-node-num{font-size:10px;font-weight:500;color:var(--text-disabled)}.lesson-tooltip{position:absolute;bottom:calc(100% + 8px);left:50%;transform:translate(-50%);background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-small);padding:8px 12px;white-space:nowrap;font-size:12px;color:var(--text-primary);pointer-events:none;opacity:0;transition:opacity var(--transition-fast);z-index:50;min-width:120px;text-align:left}.lesson-node:hover .lesson-tooltip{opacity:1}.lesson-page{display:grid;grid-template-columns:60fr 40fr;grid-template-rows:auto 1fr;height:calc(100vh - 1px);gap:0}.lesson-breadcrumb{grid-column:1 / -1;display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:1px solid var(--border-subtle);background:var(--bg-base)}.breadcrumb-trail{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary)}.breadcrumb-sep{color:var(--text-disabled)}.breadcrumb-current{color:var(--text-primary);font-weight:600}.lesson-nav-btns{display:flex;gap:8px}.lesson-nav-btn{display:flex;align-items:center;gap:4px;padding:6px 12px;border-radius:var(--radius-small);background:var(--bg-card);border:1px solid var(--border-card);color:var(--text-secondary);font-size:13px;font-weight:500;transition:color var(--transition-fast),border-color var(--transition-fast)}.lesson-nav-btn:hover{color:var(--text-primary);border-color:var(--stage-current)}.sandbox-area{border-right:1px solid var(--border-subtle);overflow:hidden;position:relative;background:var(--bg-base)}.lesson-panel{display:flex;flex-direction:column;padding:24px;gap:16px;overflow-y:auto}.lesson-panel-title{font-size:18px;font-weight:700;color:var(--text-primary);line-height:1.4}.lesson-panel-subtitle{font-size:var(--text-sm);color:var(--text-secondary);margin-top:4px}.panel-divider{height:1px;background:var(--border-subtle)}.vibe-card{border-radius:var(--radius-card);padding:14px 16px;display:flex;flex-direction:column;gap:6px;border:1px solid transparent}.vibe-card.required{background:color-mix(in srgb,var(--state-done) 8%,transparent);border-color:color-mix(in srgb,var(--state-done) 20%,transparent)}.vibe-card.advanced{background:color-mix(in srgb,var(--state-available) 8%,transparent);border-color:color-mix(in srgb,var(--state-available) 20%,transparent)}.vibe-card.challenge{background:color-mix(in srgb,var(--state-challenge) 8%,transparent);border-color:color-mix(in srgb,var(--state-challenge) 20%,transparent)}.vibe-card-header{display:flex;align-items:center;gap:8px;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.05em}.vibe-card.required .vibe-card-header{color:var(--state-done)}.vibe-card.advanced .vibe-card-header{color:var(--state-available)}.vibe-card.challenge .vibe-card-header{color:var(--state-challenge)}.vibe-card-body{font-size:var(--text-sm);color:var(--text-primary);line-height:1.6}.device-badge{display:inline-flex;align-items:center;gap:4px;font-size:10px;font-weight:600;background:color-mix(in srgb,var(--stage-09) 15%,transparent);color:var(--stage-09);border-radius:var(--radius-pill);padding:2px 8px;margin-top:4px}.complete-btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:12px;border-radius:var(--radius-card);background:color-mix(in srgb,var(--stage-current) 15%,transparent);border:1px solid color-mix(in srgb,var(--stage-current) 30%,transparent);color:var(--stage-current);font-size:14px;font-weight:600;margin-top:auto;transition:background var(--transition-fast),border-color var(--transition-fast)}.complete-btn:hover{background:color-mix(in srgb,var(--stage-current) 25%,transparent);border-color:color-mix(in srgb,var(--stage-current) 50%,transparent)}.workshop-header{margin-bottom:32px}.workshop-header h1{font-size:24px;font-weight:700}.vibe-prompt-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-card-gap)}.vibe-prompt-card{background:var(--bg-card);border:1px solid var(--border-card);border-radius:var(--radius-card);padding:var(--spacing-card-pad);display:flex;flex-direction:column;gap:10px;position:relative;overflow:hidden}.vibe-prompt-card:before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--card-theme-color, var(--border-card))}.vibe-prompt-title{font-size:16px;font-weight:600;color:var(--text-primary)}.vibe-prompt-snippet{font-family:var(--font-mono);font-size:12px;color:var(--text-secondary);background:var(--bg-base);padding:8px 12px;border-radius:var(--radius-small);line-height:1.5}.vibe-prompt-copy{display:flex;align-items:center;justify-content:flex-end}.copy-btn{font-size:12px;font-weight:500;color:var(--text-secondary);padding:4px 10px;border-radius:var(--radius-small);border:1px solid var(--border-card);background:transparent;transition:color var(--transition-fast),border-color var(--transition-fast)}.copy-btn:hover{color:var(--text-primary);border-color:var(--text-secondary)}.progress-header{margin-bottom:32px;display:flex;align-items:baseline;gap:16px}.progress-count{font-size:48px;font-weight:700;color:var(--text-primary)}.progress-total{font-size:18px;color:var(--text-secondary)}.badge-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:12px}@media(max-width:1280px){.badge-grid{grid-template-columns:repeat(6,1fr)}}.badge-item{aspect-ratio:1;border-radius:var(--radius-card);background:var(--bg-card);border:1px solid var(--border-card);display:flex;align-items:center;justify-content:center;cursor:pointer;position:relative;transition:transform var(--transition-fast),box-shadow var(--transition-fast)}.badge-item.earned{border-color:var(--card-theme-color, var(--border-card));box-shadow:0 0 12px color-mix(in srgb,var(--card-theme-color, transparent) 25%,transparent)}.badge-item:hover{transform:scale(1.08)}.badge-item.locked{filter:grayscale(1);opacity:.4}.badge-locked-overlay{font-size:18px;color:var(--text-disabled)}.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:var(--radius-small);background:var(--stage-current);color:#0e0f13;font-size:14px;font-weight:600;transition:opacity var(--transition-fast)}.btn-primary:hover{opacity:.9}.btn-ghost{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:var(--radius-small);background:transparent;border:1px solid var(--border-card);color:var(--text-secondary);font-size:14px;font-weight:500;transition:border-color var(--transition-fast),color var(--transition-fast)}.btn-ghost:hover{border-color:var(--text-secondary);color:var(--text-primary)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:64px;color:var(--text-disabled)}@keyframes pulse-ring{0%{box-shadow:0 0 color-mix(in srgb,var(--state-available) 40%,transparent)}70%{box-shadow:0 0 0 8px transparent}to{box-shadow:0 0 0 0 transparent}}@keyframes badge-pop{0%{transform:scale(.5);opacity:0}70%{transform:scale(1.15)}to{transform:scale(1);opacity:1}}.badge-pop{animation:badge-pop var(--transition-slow) forwards}@media(max-width:1279px){.app-shell{flex-direction:column}.sidebar{width:100%;min-width:unset;max-width:unset;height:56px;position:fixed;bottom:0;top:unset;flex-direction:row;padding:0 16px;border-right:none;border-top:1px solid var(--border-subtle);z-index:100}.sidebar-logo{display:none}.sidebar-nav{flex-direction:row;flex:1;justify-content:space-around}.nav-item:after{display:none}.main-content{padding-bottom:56px}.lesson-page{grid-template-columns:1fr;grid-template-rows:auto 50vw 1fr;height:auto}}::-webkit-scrollbar{width:4px;height:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-card);border-radius:2px}::-webkit-scrollbar-thumb:hover{background:var(--text-disabled)}@keyframes pulse{0%,to{opacity:.4}50%{opacity:.9}}.lesson-content-md{font-size:var(--text-base);line-height:1.8;color:var(--text-secondary);padding:4px 0 8px}.lesson-content-md h2{font-size:var(--text-lg);font-weight:700;color:var(--text-primary);margin:24px 0 12px;padding-bottom:6px;border-bottom:1px solid rgba(255,255,255,.06);display:flex;align-items:center;gap:8px}.lesson-content-md h3{font-size:var(--text-base);font-weight:600;color:var(--text-primary);margin:18px 0 8px}.lesson-content-md p{margin:0 0 10px;color:var(--text-secondary)}.lesson-content-md strong{color:var(--text-primary);font-weight:700}.lesson-content-md code{font-family:var(--font-mono);font-size:var(--text-xs);background:#ffffff12;padding:2px 6px;border-radius:4px;color:var(--stage-current, #00C896)}.lesson-content-md pre.code-block{background:#0006;border:1px solid rgba(255,255,255,.07);border-radius:8px;padding:12px 14px;overflow-x:auto;margin:8px 0 12px}.lesson-content-md pre.code-block code{background:none;padding:0;font-size:var(--text-sm);color:#a8d8b8}.lesson-content-md blockquote{border-left:2px solid var(--stage-current, #00C896);padding:6px 12px;margin:8px 0 12px;background:#ffffff08;border-radius:0 6px 6px 0;color:var(--text-secondary);font-style:italic}.lesson-content-md ul{margin:4px 0 12px;padding-left:18px;display:flex;flex-direction:column;gap:4px}.lesson-content-md li{color:var(--text-secondary);line-height:1.6}.lesson-content-md li::marker{color:var(--stage-current, #00C896)}.lesson-content-md hr{border:none;border-top:1px solid rgba(255,255,255,.06);margin:14px 0}.lesson-content-md table{width:100%;border-collapse:collapse;margin:8px 0 12px;font-size:var(--text-sm)}.lesson-content-md th{background:#ffffff0d;color:var(--text-primary);font-weight:600;padding:6px 10px;text-align:left;border-bottom:1px solid rgba(255,255,255,.08)}.lesson-content-md td{padding:5px 10px;border-bottom:1px solid rgba(255,255,255,.04);color:var(--text-secondary)}.lesson-content-md a{color:var(--stage-current, #00C896);text-decoration:none}.lesson-content-md a:hover{text-decoration:underline}.custom-scrollbar::-webkit-scrollbar{width:6px;height:6px}.custom-scrollbar::-webkit-scrollbar-track{background:transparent}.custom-scrollbar::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:3px;border:1px solid transparent;background-clip:padding-box}.custom-scrollbar::-webkit-scrollbar-thumb:hover{background:#fff3}.custom-scrollbar::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--stage-current, #ccc) 25%,transparent)}.custom-scrollbar::-webkit-scrollbar-thumb:hover{background:color-mix(in srgb,var(--stage-current, #ccc) 45%,transparent)}