.layout{min-height:100vh;display:flex;flex-direction:column}.nav{position:sticky;top:0;z-index:100;background:var(--bg-primary)}.nav-inner{max-width:1200px;margin:0 auto;padding:0 2rem;height:56px;display:flex;align-items:center;justify-content:space-between}.nav-brand{display:flex;align-items:center;color:var(--text-primary);text-decoration:none}.nav-brand:hover .nav-logo{transform:scale(1.08)}.nav-logo{width:28px;height:28px;object-fit:contain;transition:transform .2s ease}.nav-links{display:flex;gap:.15rem}.nav-link{position:relative;display:flex;align-items:center;font-size:.8rem;font-weight:500;color:var(--text-muted);padding:.45rem .75rem;border-radius:var(--radius-sm);transition:color .2s ease;text-decoration:none;letter-spacing:.01em}.nav-link:hover{color:var(--text-primary)}.nav-link.active{color:var(--text-primary);font-weight:600}.nav-link.active:after{content:"";position:absolute;bottom:2px;left:50%;transform:translate(-50%);width:4px;height:4px;border-radius:50%;background:var(--text-primary)}.main{flex:1;max-width:1200px;width:100%;margin:0 auto;padding:2.5rem 2rem}@media(max-width:640px){.nav-inner{padding:0 1rem}.main{padding:1.5rem 1rem}}.home{display:flex;flex-direction:column;height:calc(100vh - 56px - 5rem);justify-content:center}.home-columns{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center;width:100%}.showcase{display:flex;flex-direction:column;align-items:center;gap:1.5rem}.hero-center{position:relative;display:flex;align-items:center;justify-content:center}.hero-render{width:220px;height:220px;object-fit:contain;filter:drop-shadow(0 16px 40px rgba(0,0,0,.1))}.hero-text{display:flex;flex-direction:column;align-items:center;text-align:center;gap:.5rem}.hero-title{font-size:clamp(1.4rem,2.5vw,2rem);font-weight:700;line-height:1.15;letter-spacing:-.03em;color:var(--text-primary)}.hero-subtitle{font-size:.88rem;color:var(--text-muted);max-width:320px;line-height:1.55}.characters{display:flex;flex-direction:column;align-items:center;gap:1rem}.char-row{display:flex;gap:.35rem}.char-btn{display:flex;flex-direction:column;align-items:center;gap:.4rem;padding:.75rem 1rem;border:1px solid transparent;border-radius:var(--radius-md);background:transparent;cursor:pointer;transition:all .2s ease}.char-btn:hover{background:var(--bg-card)}.char-btn:hover .char-thumb{opacity:.85}.char-btn.active{border-color:var(--border);background:var(--bg-secondary);box-shadow:var(--shadow-sm)}.char-btn.active .char-thumb{opacity:1;transform:scale(1.1)}.char-btn.active .char-name{color:var(--text-primary)}.char-thumb{width:48px;height:48px;object-fit:contain;filter:drop-shadow(0 2px 6px rgba(0,0,0,.08));transition:transform .2s ease;opacity:.55}.char-name{font-size:.7rem;font-weight:600;color:var(--text-muted);letter-spacing:.01em;transition:color .2s ease}.char-desc{font-size:.82rem;color:var(--text-secondary);letter-spacing:.02em;min-height:1.3em}.home-cta{padding-top:.5rem}.cta-link{display:inline-flex;align-items:center;gap:.35rem;font-size:.78rem;font-weight:500;color:var(--text-muted);text-decoration:none;transition:color .2s ease;letter-spacing:.01em}.cta-link:hover{color:var(--text-primary)}.video-section{display:flex;align-items:center;justify-content:center}.video-wrapper{position:relative;width:100%;padding-bottom:56.25%;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);background:var(--bg-card)}.video-wrapper iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:none}@media(max-width:800px){.home-columns{grid-template-columns:1fr;gap:2rem}.home{height:auto;padding-bottom:2rem}.hero-render{width:180px;height:180px}.hero-title{font-size:1.4rem}.char-row{gap:.15rem}.char-btn{padding:.6rem .7rem}.char-thumb{width:40px;height:40px}}.flash-page{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 56px - 5rem);padding:0}.flash-split{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:4rem;width:100%;max-width:900px}.flash-split-left{display:flex;align-items:center;justify-content:center;position:relative}.flash-split-right{display:flex;flex-direction:column;gap:1.25rem}.flash-character{width:260px;height:260px;object-fit:contain;filter:drop-shadow(0 12px 32px rgba(0,0,0,.08))}.flash-character-pulse{position:absolute;width:200px;height:200px;border-radius:50%;background:radial-gradient(circle,var(--accent-glow),transparent 70%);animation:pulse 2.5s ease-in-out infinite;pointer-events:none}@keyframes pulse{0%,to{opacity:.3;transform:scale(.9)}50%{opacity:.7;transform:scale(1.1)}}.flash-title{font-family:var(--font-sans);font-size:1.75rem;font-weight:700;color:var(--text-primary);line-height:1.15;letter-spacing:-.02em}.flash-subtitle{font-size:.92rem;color:var(--text-secondary);line-height:1.6}.flash-fun-msg{font-size:.95rem;font-weight:500;color:var(--text-secondary);min-height:1.5em}.flash-fun-msg.error{color:var(--danger);font-size:.88rem}.upload-zone{display:flex;align-items:center;justify-content:center;width:100%;padding:1.5rem;border:2px dashed var(--border);border-radius:var(--radius-lg);cursor:pointer;transition:all .2s ease;background:var(--bg-secondary)}.upload-zone:hover{border-color:var(--accent);background:var(--accent-glow)}.upload-zone.has-file{border-style:solid;border-color:var(--accent);background:var(--accent-glow)}.upload-zone-empty{display:flex;flex-direction:column;align-items:center;gap:.4rem;color:var(--text-muted)}.upload-zone-text{font-size:.88rem;color:var(--text-secondary)}.upload-zone-hint{font-size:.75rem;color:var(--text-muted)}.upload-zone-filled{display:flex;align-items:center;gap:.65rem;width:100%;color:var(--accent)}.upload-zone-file-info{display:flex;flex-direction:column;flex:1}.upload-zone-filename{font-family:var(--font-mono);font-size:.82rem;font-weight:600;color:var(--text-primary)}.upload-zone-filesize{font-size:.72rem;color:var(--text-muted)}.upload-zone-change{font-size:.78rem;font-weight:600;color:var(--accent)}.flash-btn{display:inline-flex;align-items:center;align-self:flex-start;gap:.45rem;padding:.7rem 1.5rem;border:none;border-radius:var(--radius-md);font-family:var(--font-sans);font-size:.88rem;font-weight:600;color:#fff;background:var(--accent);cursor:pointer;transition:all .2s ease;box-shadow:var(--shadow-sm)}.flash-btn:hover:not(:disabled){background:var(--accent-dark);transform:translateY(-1px);box-shadow:var(--shadow-md)}.flash-btn:disabled{opacity:.35;cursor:not-allowed}.flash-btn.secondary{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border);box-shadow:none}.flash-btn.secondary:hover{background:var(--bg-card)}.flash-hints{display:flex;flex-wrap:wrap;gap:.5rem}.flash-hint{display:inline-flex;align-items:center;gap:.25rem;font-size:.68rem;color:var(--text-muted)}.flash-hint svg{opacity:.45}.flash-progress-bar{display:flex;align-items:center;gap:.75rem;width:100%}.flash-progress-track{flex:1;height:6px;background:var(--border);border-radius:6px;overflow:hidden}.flash-progress-fill{height:100%;background:var(--accent);border-radius:6px}.flash-progress-pct{font-family:var(--font-mono);font-size:.82rem;font-weight:600;color:var(--text-primary);min-width:38px;text-align:right}.flash-log-toggle{display:inline-flex;align-items:center;align-self:flex-start;gap:.3rem;padding:.3rem .6rem;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--text-muted);font-family:var(--font-mono);font-size:.7rem;font-weight:500;cursor:pointer;transition:color .2s ease}.flash-log-toggle:hover{color:var(--text-secondary)}.flash-log-caret{transition:transform .2s ease}.flash-log-caret.open{transform:rotate(180deg)}.flash-log-console{width:100%;border:1px solid var(--border);border-radius:var(--radius-md);background:#1a1a2e;overflow:hidden}.flash-log-body{max-height:180px;overflow-y:auto;padding:.6rem;display:flex;flex-direction:column;gap:.1rem}.flash-log-line{display:flex;gap:.5rem;font-family:var(--font-mono);font-size:.68rem;line-height:1.5}.flash-log-line.success .flash-log-msg{color:#86efac}.flash-log-line.error .flash-log-msg{color:#fca5a5}.flash-log-time{color:#4a4a6a;flex-shrink:0}.flash-log-msg{color:#c8c8e0;word-break:break-all}.flash-done-screen{display:flex;flex-direction:column;align-items:center;width:100%;max-width:520px;gap:1rem;text-align:center}.flash-done-screen .flash-btn,.flash-done-screen .flash-log-toggle{align-self:center}.flash-done-characters{display:flex;align-items:flex-end;justify-content:center;gap:.5rem;margin-bottom:1rem}.flash-done-char{width:90px;height:90px;object-fit:contain;filter:drop-shadow(0 4px 12px rgba(0,0,0,.06))}.flash-done-char:nth-child(1),.flash-done-char:nth-child(4){width:72px;height:72px}.flash-done-badge{display:inline-flex;align-items:center;gap:.4rem;padding:.4rem 1rem;border-radius:100px;background:var(--success-light);color:var(--success);font-weight:700;font-size:.88rem}.flash-done-title{font-family:var(--font-sans);font-size:1.5rem;font-weight:700;color:var(--text-primary)}.flash-done-desc{font-size:.88rem;color:var(--text-secondary);line-height:1.6;max-width:340px}@media(max-width:700px){.flash-page{padding:2rem 1.25rem 3rem;align-items:flex-start}.flash-split{grid-template-columns:1fr;gap:2rem}.flash-split-left{order:-1}.flash-split-right{align-items:center;text-align:center}.flash-character{width:160px;height:160px}.flash-btn{align-self:center}.flash-hints{justify-content:center}.flash-log-toggle{align-self:center}.flash-done-char{width:64px;height:64px}.flash-done-char:nth-child(1),.flash-done-char:nth-child(4){width:52px;height:52px}}:root{--bg-primary: #fafafa;--bg-secondary: #ffffff;--bg-card: #f4f4f5;--text-primary: #18181b;--text-secondary: #52525b;--text-muted: #a1a1aa;--accent: #0097b2;--accent-light: #e0f7fc;--accent-dark: #007a91;--accent-glow: rgba(0, 213, 244, .08);--danger: #ef4444;--danger-light: #fef2f2;--success: #22c55e;--success-light: #f0fdf4;--border: #e4e4e7;--border-strong: #d4d4d8;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--font-sans: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;--font-mono: "JetBrains Mono", "SF Mono", monospace;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 12px rgba(0, 0, 0, .06)}@font-face{font-family:Plus Jakarta Sans;font-style:normal;font-weight:300;font-display:swap;src:url(/fonts/plus-jakarta-sans-300.woff2) format("woff2")}@font-face{font-family:Plus Jakarta Sans;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/plus-jakarta-sans-400.woff2) format("woff2")}@font-face{font-family:Plus Jakarta Sans;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/plus-jakarta-sans-500.woff2) format("woff2")}@font-face{font-family:Plus Jakarta Sans;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/plus-jakarta-sans-600.woff2) format("woff2")}@font-face{font-family:Plus Jakarta Sans;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/plus-jakarta-sans-700.woff2) format("woff2")}@font-face{font-family:Plus Jakarta Sans;font-style:normal;font-weight:800;font-display:swap;src:url(/fonts/plus-jakarta-sans-800.woff2) format("woff2")}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:300;font-display:swap;src:url(/fonts/jetbrains-mono-300.woff2) format("woff2")}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/jetbrains-mono-400.woff2) format("woff2")}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/jetbrains-mono-500.woff2) format("woff2")}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.6;font-weight:400}a{color:var(--accent);text-decoration:none;transition:color .2s}a:hover{color:var(--accent-dark)}::selection{background:var(--accent);color:#fff}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}