:root{color-scheme:light dark;--bg-1: #eef1f6;--bg-2: #dfe6f3;--glass-bg: rgba(255, 255, 255, .55);--glass-border: rgba(255, 255, 255, .65);--glass-shadow: 0 8px 32px rgba(31, 41, 66, .14);--text-primary: #1c2230;--text-secondary: #5b6472;--accent: #3b6df0;--accent-2: #7b5cf0;--success: #1f9d63;--danger: #d64545;--radius-lg: 28px;--radius-md: 18px;--radius-sm: 12px;--focus-ring: 0 0 0 3px rgba(59, 109, 240, .45);font-synthesis:none}@media(prefers-color-scheme:dark){:root{--bg-1: #0f1320;--bg-2: #171d31;--glass-bg: rgba(30, 34, 51, .55);--glass-border: rgba(255, 255, 255, .12);--glass-shadow: 0 8px 36px rgba(0, 0, 0, .45);--text-primary: #eef1f8;--text-secondary: #a4acc0}}*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--text-primary);background:radial-gradient(circle at 15% 10%,var(--bg-2),transparent 55%),radial-gradient(circle at 85% 90%,var(--bg-2),transparent 55%),var(--bg-1);min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;-webkit-font-smoothing:antialiased}.app-shell{width:100%;max-width:640px;display:flex;flex-direction:column;align-items:center;gap:28px}.brand{display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center}.brand__logo{width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,var(--accent),var(--accent-2));display:flex;align-items:center;justify-content:center;box-shadow:0 6px 20px #3b6df059}.brand__title{font-size:1.9rem;font-weight:700;letter-spacing:-.02em;margin:0}.brand__subtitle{font-size:.98rem;color:var(--text-secondary);margin:0;max-width:420px}.glass-card{width:100%;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:var(--glass-shadow);backdrop-filter:blur(22px) saturate(140%);-webkit-backdrop-filter:blur(22px) saturate(140%);padding:36px;display:flex;flex-direction:column;gap:22px;animation:rise .42s cubic-bezier(.22,1,.36,1)}@keyframes rise{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.dropzone{border:1.5px dashed rgba(91,100,114,.35);border-radius:var(--radius-md);padding:48px 24px;display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;cursor:pointer;transition:border-color .18s ease,background-color .18s ease,transform .18s ease;background:#ffffff26}.dropzone:hover{border-color:var(--accent);background:#3b6df00f}.dropzone.is-dragover{border-color:var(--accent);background:#3b6df01a;transform:scale(1.01)}.dropzone:focus-visible{outline:none;box-shadow:var(--focus-ring)}.dropzone__icon{width:44px;height:44px;color:var(--accent)}.dropzone__text{font-size:1rem;color:var(--text-secondary)}.btn{appearance:none;border:none;border-radius:var(--radius-sm);padding:14px 26px;font-size:.98rem;font-weight:600;cursor:pointer;transition:transform .14s ease,box-shadow .14s ease,opacity .14s ease;font-family:inherit}.btn:focus-visible{outline:none;box-shadow:var(--focus-ring)}.btn:active{transform:scale(.98)}.btn--primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 6px 18px #3b6df059}.btn--primary:hover{box-shadow:0 8px 22px #3b6df073}.btn--secondary{background:#78809124;color:var(--text-primary)}.btn--danger{background:#d645451f;color:var(--danger)}.btn:disabled{opacity:.55;cursor:not-allowed}.file-summary{display:flex;align-items:center;gap:16px;padding:16px 18px;border-radius:var(--radius-md);background:#ffffff59;border:1px solid var(--glass-border)}.file-summary__icon{width:38px;height:38px;flex-shrink:0;color:var(--accent)}.file-summary__meta{display:flex;flex-direction:column;gap:2px;min-width:0}.file-summary__name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-summary__detail{font-size:.86rem;color:var(--text-secondary)}.actions-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.progress-panel{display:flex;flex-direction:column;gap:16px}.progress-stage{font-weight:600;text-align:center}.progress-sub{font-size:.85rem;color:var(--text-secondary);text-align:center}.progress-track{width:100%;height:10px;border-radius:999px;background:#7880912e;overflow:hidden}.progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .26s ease}.result-metrics{display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap;padding:18px 0}.result-metric{display:flex;flex-direction:column;align-items:center;gap:4px}.result-metric__value{font-size:1.4rem;font-weight:700}.result-metric__label{font-size:.8rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em}.result-arrow{color:var(--text-secondary);font-size:1.4rem}.result-badge{align-self:center;padding:6px 14px;border-radius:999px;font-size:.85rem;font-weight:600}.result-badge--success{background:#1f9d6324;color:var(--success)}.result-badge--warning{background:#d6962d29;color:#a06a1c}.banner{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border-radius:var(--radius-md);font-size:.92rem}.banner--error{background:#d645451a;color:var(--danger)}.banner--info{background:#3b6df01a;color:var(--accent)}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.update-toast{position:fixed;bottom:20px;left:50%;transform:translate(-50%);background:var(--glass-bg);border:1px solid var(--glass-border);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-radius:var(--radius-md);padding:12px 18px;display:flex;align-items:center;gap:12px;box-shadow:var(--glass-shadow);z-index:100}footer.privacy-note{display:flex;align-items:center;gap:8px;color:var(--text-secondary);font-size:.82rem;text-align:center}@media(max-width:480px){.glass-card{padding:24px;border-radius:var(--radius-md)}.dropzone{padding:32px 16px}}