:root{--bg:#f8fafc;--surface:#fff;--surface-soft:#eef4ff;--text:#1e293b;--muted:#64748b;--border:#dbe3ef;--primary:#2563eb;--primary-strong:#1d4ed8;--accent:#f97316;--danger:#b91c1c;--shadow:0 24px 60px #0f172a1f;--focus:0 0 0 4px #2563eb38;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{background:radial-gradient(circle at 10% 0%, #2563eb24, transparent 32rem), linear-gradient(180deg, #fff 0%, var(--bg) 48%, #eef4ff 100%);min-width:320px;min-height:100dvh;margin:0}button,input{font:inherit}button{color:#fff;background:var(--primary);cursor:pointer;border:0;border-radius:999px;min-height:48px;padding:0 24px;font-weight:700;transition:transform .16s,background .16s,box-shadow .16s,opacity .16s;box-shadow:0 12px 28px #2563eb3d}button:hover:not(:disabled){background:var(--primary-strong);transform:translateY(-1px)}button:active:not(:disabled){transform:translateY(0)}button:focus-visible,.drop-zone:focus-within{box-shadow:var(--focus);outline:none}button:disabled{cursor:not-allowed;opacity:.52;box-shadow:none}button.secondary{color:var(--primary);box-shadow:none;background:#eff6ff}code{color:var(--primary-strong);background:#eff6ff;border-radius:6px;padding:2px 6px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.92em}#app{width:min(100% - 32px,960px);margin:0 auto;padding:56px 0}.hero{text-align:center;max-width:780px;margin:0 auto 28px}.eyebrow{min-height:32px;color:var(--primary-strong);letter-spacing:.02em;background:#eff6ffc7;border:1px solid #2563eb2e;border-radius:999px;align-items:center;padding:0 14px;font-size:14px;font-weight:700;display:inline-flex}h1,h2,p{margin:0}h1{letter-spacing:-.06em;margin-top:18px;font-size:clamp(40px,8vw,72px);line-height:.98}h2{letter-spacing:-.03em;font-size:clamp(22px,4vw,30px);line-height:1.18}.subtitle{max-width:720px;color:var(--muted);margin:20px auto 0;font-size:18px;line-height:1.75}.converter-card,.notes{box-shadow:var(--shadow);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#ffffffe6;border:1px solid #dbe3efe0;border-radius:28px}.converter-card{padding:clamp(22px,4vw,36px)}.card-header{justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:24px;display:flex}.card-header p{color:var(--muted);margin-top:8px;line-height:1.65}.privacy-badge{color:#9a3412;background:#ffedd5;border-radius:999px;flex:none;padding:8px 12px;font-size:14px;font-weight:800}.drop-zone{text-align:center;cursor:pointer;background:linear-gradient(#eff6ffe6,#fffffff5);border:2px dashed #b9c8dc;border-radius:24px;place-items:center;min-height:260px;padding:32px 20px;transition:border-color .16s,transform .16s,background .16s;display:grid}.drop-zone:hover,.drop-zone.drag-over{border-color:var(--primary);background:var(--surface-soft);transform:translateY(-1px)}.drop-zone input{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.upload-icon{width:72px;height:72px;color:var(--primary);background:#fff;border-radius:22px;place-items:center;display:grid;box-shadow:inset 0 -10px 18px #2563eb14,0 12px 32px #2563eb24}.upload-icon svg{fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:2px;width:34px;height:34px}.drop-title{color:var(--text);margin-top:18px;font-size:20px;font-weight:800}.drop-help{color:var(--muted);margin-top:8px;line-height:1.6}.file-panel{border:1px solid var(--border);background:#fbfdff;border-radius:20px;margin-top:22px;padding:18px}.security-option{color:#7c2d12;background:#fff7ed;border:1px solid #fed7aa;border-radius:18px;align-items:flex-start;gap:12px;margin-top:18px;padding:14px 16px;display:flex}.security-option input{width:20px;height:20px;accent-color:var(--accent);margin-top:2px}.security-option strong,.security-option small{display:block}.security-option small{margin-top:4px;line-height:1.55}.security-option code{color:#9a3412;background:#ffedd5}.file-panel dl{grid-template-columns:repeat(3,1fr);gap:14px;margin:0;display:grid}.file-panel div{min-width:0}.file-panel dt{color:var(--muted);font-size:13px;font-weight:700}.file-panel dd{overflow-wrap:anywhere;margin:6px 0 0;font-weight:800}.actions{flex-wrap:wrap;gap:12px;margin-top:24px;display:flex}.status{color:var(--muted);margin-top:16px;line-height:1.6}.notes{margin-top:22px;padding:28px}.notes ul{color:var(--muted);gap:10px;margin:16px 0 0;padding-left:22px;line-height:1.7;display:grid}@media (width<=720px){#app{width:min(100% - 24px,960px);padding:32px 0}.card-header,.actions{flex-direction:column}button,button.secondary{width:100%}.file-panel dl{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}