:root{--brand-50:#ecfdfb;--brand-100:#ccfbf1;--brand-200:#99f6e4;--brand-300:#5eead4;--brand-400:#2dd4bf;--brand-500:#14b8a6;--brand-600:#0d9488;--brand-700:#0f766e;--brand-800:#115e59;--brand-900:#134e4a;--brand-950:#042f2e;--color-primary:#0d9488;--color-primary-hover:#0f766e;--color-background:#fff;--color-surface:#ecfdfb;--color-input:#fff;--color-btn-bg:#fff;--color-text:#0f172a;--color-text-muted:#64748b;--color-border:color-mix(in srgb, var(--brand-300) 35%, #cbd5e1);--color-success:#16a34a;--color-warning:#f59e0b;--color-error:#dc2626;--color-info:#0284c7;--font-family:"Plus Jakarta Sans", system-ui, -apple-system, sans-serif;--font-heading:"Outfit", system-ui, -apple-system, sans-serif;--font-mono:"JetBrains Mono", "SFMono-Regular", Consolas, monospace;--base-font-size:16px;--font-size-nav:.875rem;--font-size-xs:.75rem;--font-size-sm:.875rem;--font-size-base:1rem;--font-size-md:1.125rem;--font-size-lg:1.25rem;--font-size-xl:1.5rem;--font-size-2xl:1.875rem;--font-size-3xl:2.25rem;--font-size-4xl:2.75rem;--font-weight-regular:400;--font-weight-medium:500;--font-weight-semibold:600;--font-weight-bold:700;--font-weight-extrabold:800;--line-height-tight:1.15;--line-height-snug:1.35;--line-height-normal:1.55;--line-height-relaxed:1.7;--letter-spacing-tight:-.02em;--letter-spacing-normal:0;--letter-spacing-wide:.05em;--letter-spacing-widest:.12em;--radius:8px;--radius-sm:6px;--radius-lg:12px;--radius-full:999px;--spacing-unit:4px;--shadow-sm:0 1px 3px 0 color-mix(in srgb, var(--color-primary) 8%, #0f172a0d);--shadow-md:0 4px 16px -2px color-mix(in srgb, var(--color-primary) 10%, #0f172a14);--shadow-lg:0 12px 28px -4px color-mix(in srgb, var(--color-primary) 12%, #0f172a1f);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}[data-theme=dark]{--color-primary:#14b8a6;--color-primary-hover:#2dd4bf;--color-background:#071311;--color-surface:#0d1f1c;--color-input:#071311;--color-btn-bg:#0d1f1c;--color-text:#f0fdfa;--color-text-muted:#94a3b8;--color-border:#1f3a35;--color-success:#4ade80;--color-warning:#fbbf24;--color-error:#f87171;--color-info:#38bdf8;--shadow-sm:0 1px 3px 0 #0006;--shadow-md:0 4px 16px -2px #00000080;--shadow-lg:0 12px 28px -4px #0009;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*,:before,:after{box-sizing:border-box}html{font-size:var(--base-font-size);scroll-behavior:smooth}html,body{max-width:100%;overflow-x:hidden}body{font-family:var(--font-family);background-color:var(--color-background);color:var(--color-text);line-height:var(--line-height-normal);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;transition:background-color .25s,color .25s,border-color .25s}h1,h2,h3,h4,.brand-title{font-family:var(--font-heading);letter-spacing:var(--letter-spacing-tight);color:var(--color-text)}h1{font-size:clamp(2rem,5vw,3rem);font-weight:var(--font-weight-extrabold);line-height:var(--line-height-tight);margin:0 0 14px}h2{font-size:var(--font-size-xl);font-weight:var(--font-weight-bold);margin:0}h3{font-size:var(--font-size-md);font-weight:var(--font-weight-semibold);margin:0 0 8px}p{margin:0 0 16px}a{color:var(--color-primary);text-decoration:none;transition:color .16s,text-decoration-color .16s}a:hover{color:var(--color-primary-hover);text-decoration:underline}code,pre,kbd,textarea{font-family:var(--font-mono)}button,input,textarea{font:inherit;color:inherit}button,a{-webkit-tap-highlight-color:transparent}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.container{max-width:1240px;margin:0 auto;padding:0 clamp(16px,3.5vw,28px)}.navbar{z-index:100;background:color-mix(in srgb, var(--color-background) 88%, transparent);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--color-border);transition:background-color .25s,border-color .25s;position:sticky;top:0}.navbar-container{justify-content:space-between;align-items:center;gap:16px;max-width:1240px;margin:0 auto;padding:12px clamp(16px,3.5vw,28px);display:flex}.brand-link{color:var(--color-text);font-weight:var(--font-weight-bold);flex-shrink:0;align-items:center;gap:12px;text-decoration:none;transition:opacity .16s;display:inline-flex}.brand-link:hover{opacity:.9;text-decoration:none}.brand-logo{object-fit:contain;border-radius:var(--radius-sm);width:36px;height:36px;display:block}.brand-title{font-size:var(--font-size-md);font-weight:var(--font-weight-bold);align-items:center;gap:6px;display:inline-flex}.brand-accent{color:var(--color-primary)}.nav-actions{align-items:center;gap:10px;display:flex}.badge{font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);border-radius:var(--radius-full);white-space:nowrap;align-items:center;gap:6px;padding:4px 10px;line-height:1.2;display:inline-flex}.badge-brand{background:color-mix(in srgb, var(--color-primary) 12%, transparent);color:var(--color-primary);border:1px solid color-mix(in srgb, var(--color-primary) 28%, transparent)}.header{text-align:center;padding:clamp(36px,6vw,56px) 0 clamp(24px,4vw,36px)}.hero-title{color:var(--color-text);margin:0 0 12px}.subtitle{color:var(--color-text-muted);max-width:680px;font-size:clamp(1rem,2.2vw,1.125rem);line-height:var(--line-height-relaxed);margin:0 auto 28px}.subtitle code{background:color-mix(in srgb, var(--color-primary) 10%, var(--color-surface));background:var(--color-surface);color:var(--color-primary);border:1px solid color-mix(in srgb, var(--color-primary) 20%, transparent);border-radius:4px;padding:2px 6px;font-size:.9em}.sample-bar{flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;display:flex}.sample-label{font-size:var(--font-size-sm);color:var(--color-text-muted);font-weight:var(--font-weight-medium);margin-right:4px}.btn-sample{font-size:var(--font-size-xs);font-weight:var(--font-weight-medium);border-radius:var(--radius-full);border:1px solid var(--color-border);background:var(--color-surface);background:var(--color-btn-bg);color:var(--color-text);cursor:pointer;white-space:nowrap;padding:6px 14px;transition:all .16s}.btn-sample:hover,.btn-sample:focus-visible{border-color:var(--color-primary);color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 10%, transparent);transform:translateY(-1px)}.main-content{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:24px;display:grid}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);min-width:0;padding:clamp(18px,3vw,24px);transition:border-color .2s,box-shadow .2s}.card:hover{box-shadow:var(--shadow-md)}.section-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.header-title-group{align-items:center;gap:10px;display:flex}.header-title-group h2{font-size:var(--font-size-md);font-weight:var(--font-weight-bold);margin:0}.header-title-group .badge{background:color-mix(in srgb, var(--color-primary) 10%, transparent);color:var(--color-primary);border:1px solid color-mix(in srgb, var(--color-primary) 22%, transparent)}.btn{border-radius:var(--radius);border:1px solid var(--color-border);background:var(--color-surface);background:var(--color-btn-bg);color:var(--color-text);cursor:pointer;font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);-webkit-user-select:none;user-select:none;justify-content:center;align-items:center;gap:8px;padding:9px 16px;line-height:1;text-decoration:none;transition:all .16s;display:inline-flex}.btn:hover:not(:disabled){border-color:var(--color-primary);color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 8%, transparent)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-icon{border-radius:var(--radius);background:var(--color-btn-bg);width:38px;height:38px;color:var(--color-text-muted);justify-content:center;align-items:center;padding:0;display:inline-flex}.btn-icon:hover:not(:disabled){color:var(--color-primary);border-color:var(--color-primary)}.btn-sm{font-size:var(--font-size-xs);padding:6px 12px}.btn-xs{font-size:var(--font-size-xs);padding:4px 10px}.btn-secondary{background:var(--color-surface);background:var(--color-btn-bg);border:1px solid var(--color-border);color:var(--color-text)}.btn-secondary:hover:not(:disabled){border-color:var(--color-primary);color:var(--color-primary);background:color-mix(in srgb, var(--color-primary) 8%, transparent)}.btn-primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary);box-shadow:0 2px 8px color-mix(in srgb, var(--color-primary) 28%, transparent)}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover);border-color:var(--color-primary-hover);color:#fff;box-shadow:0 4px 14px color-mix(in srgb, var(--color-primary) 38%, transparent);transform:translateY(-1px)}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-convert{width:100%;font-size:var(--font-size-base);font-weight:var(--font-weight-bold);margin-top:14px;padding:12px 18px}.input-actions{align-items:center;gap:8px;display:flex}.output-button-group{align-items:center;gap:12px;margin-top:14px;display:flex}.output-button-group .btn{font-size:var(--font-size-sm);background:var(--color-btn-bg);flex:1;padding:12px 16px}.textarea-wrapper{border-radius:var(--radius);position:relative}textarea{resize:vertical;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-background);background:var(--color-input);width:100%;height:380px;color:var(--color-text);font-size:.84rem;line-height:var(--line-height-relaxed);outline:none;padding:16px;transition:border-color .16s,box-shadow .16s,background .2s;display:block}textarea:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px color-mix(in srgb, var(--color-primary) 20%, transparent)}textarea::placeholder{color:var(--color-text-muted);opacity:.75}.drop-overlay{background:color-mix(in srgb, var(--color-background) 92%, var(--color-primary));background:color-mix(in srgb, var(--color-surface) 92%, var(--color-primary));border:2px dashed var(--color-primary);border-radius:var(--radius);color:var(--color-primary);font-weight:var(--font-weight-semibold);font-size:var(--font-size-base);pointer-events:none;z-index:5;flex-direction:column;justify-content:center;align-items:center;gap:12px;display:none;position:absolute;inset:0}.dragover .drop-overlay{display:flex}.stats-bar{min-height:40px;font-size:var(--font-size-xs);color:var(--color-text-muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 12px;padding:10px 2px 4px;display:flex}.entry-info{font-weight:var(--font-weight-medium)}.entry-info.success{color:var(--color-success);font-weight:var(--font-weight-semibold)}.entry-info.warning{color:#b45309;font-weight:var(--font-weight-semibold)}[data-theme=dark] .entry-info.warning{color:var(--color-warning)}.entry-info.error{color:var(--color-error);font-weight:var(--font-weight-semibold)}.keyboard-hint{font-size:var(--font-size-xs);color:var(--color-text-muted)}kbd{font-family:var(--font-mono);border:1px solid var(--color-border);background:var(--color-surface);background:var(--color-btn-bg);color:var(--color-text);box-shadow:0 1px 0 var(--color-border);border-radius:4px;padding:2px 6px;font-size:.72rem}.review-note{font-size:var(--font-size-sm);line-height:var(--line-height-normal);border-left:4px solid var(--color-primary);background:color-mix(in srgb, var(--color-surface) 92%, var(--color-background));background:var(--color-surface);border-radius:var(--radius);margin-top:24px;padding:18px 22px}#conversion-warnings{color:#b45309;max-height:220px;font-size:var(--font-size-sm);margin:12px 0 0;padding-left:20px;overflow-y:auto}[data-theme=dark] #conversion-warnings{color:var(--color-warning)}#conversion-warnings:empty{display:none}#conversion-warnings li{line-height:var(--line-height-snug);margin-bottom:6px}.guide-section{margin-top:28px}.guide-header{margin-bottom:20px}.section-title{font-size:var(--font-size-xl);font-weight:var(--font-weight-bold);margin:0 0 8px}.section-desc{color:var(--color-text-muted);font-size:var(--font-size-sm);line-height:var(--line-height-normal);margin:0}.section-desc code{background:color-mix(in srgb, var(--color-primary) 10%, var(--color-surface));background:var(--color-surface);color:var(--color-primary);border:1px solid color-mix(in srgb, var(--color-primary) 20%, transparent);border-radius:4px;padding:2px 5px;font-size:.9em}.code-example-card{border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface);margin-top:20px;overflow:hidden}.code-header{background:color-mix(in srgb, var(--color-primary) 7%, var(--color-surface));background:color-mix(in srgb, var(--color-primary) 8%, var(--color-surface));border-bottom:1px solid var(--color-border);font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);justify-content:space-between;align-items:center;padding:10px 16px;display:flex}.code-title{font-family:var(--font-mono);color:var(--color-primary)}.code-block{background:var(--color-background);background:var(--color-input);color:var(--color-text);margin:0;padding:18px;font-size:.8rem;line-height:1.7;overflow-x:auto}.faq-grid{grid-template-columns:1fr 1fr;gap:16px;margin-top:24px;display:grid}.faq-item{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:20px;transition:border-color .16s,transform .16s}.faq-item:hover{border-color:color-mix(in srgb, var(--color-primary) 40%, var(--color-border))}.faq-item h3{font-family:var(--font-heading);font-size:1.05rem;font-weight:var(--font-weight-semibold);color:var(--color-text);margin:0 0 8px}.faq-item p{font-size:var(--font-size-sm);color:var(--color-text-muted);line-height:var(--line-height-relaxed);margin:0}.faq-item code{background:color-mix(in srgb, var(--color-primary) 10%, var(--color-surface));background:var(--color-input);color:var(--color-primary);border:1px solid color-mix(in srgb, var(--color-primary) 18%, transparent);border-radius:4px;padding:2px 5px;font-size:.88em}.footer{text-align:center;border-top:1px solid var(--color-border);font-size:var(--font-size-sm);color:var(--color-text-muted);margin-top:48px;padding:32px 0}.footer-content{flex-wrap:wrap;justify-content:center;align-items:center;gap:12px;display:flex}.footer a{color:var(--color-primary);font-weight:var(--font-weight-medium);text-decoration:none;transition:color .16s}.footer a:hover{color:var(--color-primary-hover);text-decoration:underline}.footer .sep{color:var(--color-border)}.toast-container{z-index:1000;pointer-events:none;flex-direction:column;gap:10px;max-width:min(420px,100vw - 32px);display:flex;position:fixed;bottom:24px;right:24px}.toast{background:var(--color-input);color:var(--color-text);border:1px solid var(--color-border);border-left:4px solid var(--color-primary);box-shadow:var(--shadow-lg);border-radius:var(--radius);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);opacity:0;pointer-events:auto;overflow-wrap:anywhere;padding:12px 18px;transition:opacity .25s,transform .25s;transform:translateY(8px)}.toast.show{opacity:1;transform:translateY(0)}.toast-success{border-left-color:var(--color-success)}.toast-error{border-left-color:var(--color-error)}.toast-warning{border-left-color:#b45309}[data-theme=dark] .toast-warning{border-left-color:var(--color-warning)}.toast-info{border-left-color:var(--color-info)}.theme-switch{border-radius:var(--radius-full);border:1px solid var(--color-border);background:var(--color-surface);cursor:pointer;vertical-align:middle;flex:none;width:54px;height:28px;padding:0;transition:background .2s,border-color .2s,box-shadow .16s;display:inline-block;position:relative}.theme-switch:hover{border-color:var(--color-primary)}.theme-switch:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.theme-switch .track-icon{width:13px;height:13px;color:var(--color-text-muted);pointer-events:none;position:absolute;top:50%;transform:translateY(-50%)}.theme-switch .track-icon.sun{left:7px}.theme-switch .track-icon.moon{right:7px}.theme-switch .thumb{background:var(--color-primary);color:#fff;pointer-events:none;border-radius:50%;justify-content:center;align-items:center;width:22px;height:22px;transition:left .2s cubic-bezier(.4,0,.2,1),background-color .2s;display:flex;position:absolute;top:2px;left:2px}.theme-switch .thumb svg{width:13px;height:13px}.theme-switch .thumb .moon-icon{display:none}[data-theme=dark] .theme-switch .thumb{left:28px}[data-theme=dark] .theme-switch .thumb .sun-icon{display:none}[data-theme=dark] .theme-switch .thumb .moon-icon{display:block}.btn-icon.theme-toggle .sun-icon{display:none}.btn-icon.theme-toggle .moon-icon,[data-theme=dark] .btn-icon.theme-toggle .sun-icon{display:block}[data-theme=dark] .btn-icon.theme-toggle .moon-icon{display:none}@media (width<=850px){.main-content,.faq-grid{grid-template-columns:1fr}.navbar-container,.container{padding-left:16px;padding-right:16px}.badge-brand,.keyboard-hint{display:none}.card{padding:16px}.brand-title{font-size:var(--font-size-sm)}.nav-actions{gap:8px}textarea{height:300px}}@media (width<=480px){.output-button-group{flex-direction:column;gap:10px}.output-button-group .btn{width:100%}.toast-container{max-width:none;bottom:16px;left:16px;right:16px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}