:root{--bg: #ffffff;--bg-soft: #f6f7f9;--bg-inset: #eef0f4;--fg: #14161a;--fg-muted: #5b6270;--border: #dfe3ea;--accent: #1f6feb;--accent-fg: #ffffff;--accent-soft: #eaf2ff;--danger: #b42318;--ok: #067647;--radius: 10px;--wrap: 720px;--font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace}@media(prefers-color-scheme:dark){:root{--bg: #0f1115;--bg-soft: #16191f;--bg-inset: #1c2028;--fg: #e8eaed;--fg-muted: #9aa2b1;--border: #2a2f39;--accent: #4c8dff;--accent-fg: #0f1115;--accent-soft: #16233a;--danger: #ff7b72;--ok: #3fb950}}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}.site-header{border-bottom:1px solid var(--border);background:var(--bg)}.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px}.logo{font-weight:700;font-size:1.15rem;letter-spacing:-.02em;text-decoration:none;color:var(--fg)}.logo span{color:var(--accent)}.site-header nav{display:flex;gap:18px;font-size:.9rem}.site-header nav a{color:var(--fg-muted);text-decoration:none}.site-header nav a:hover{color:var(--fg)}.site-footer{margin-top:72px;border-top:1px solid var(--border);padding:28px 0 48px;font-size:.875rem;color:var(--fg-muted)}.site-footer nav{display:flex;flex-wrap:wrap;gap:8px 18px;margin-bottom:12px}.site-footer a{color:var(--fg-muted)}main{padding-top:36px}h1{font-size:clamp(1.8rem,5vw,2.4rem);line-height:1.15;letter-spacing:-.025em;margin:0 0 14px}h2{font-size:1.3rem;line-height:1.3;letter-spacing:-.015em;margin:40px 0 12px}h3{font-size:1.05rem;margin:28px 0 8px}p{margin:0 0 16px}a{color:var(--accent)}.lede{font-size:1.05rem;color:var(--fg-muted)}.prose{max-width:68ch}.tool{margin:24px 0 8px}.dropzone{border:2px dashed var(--border);border-radius:var(--radius);background:var(--bg-soft);padding:40px 24px;text-align:center;cursor:pointer;transition:border-color .15s,background .15s}.dropzone:hover,.dropzone:focus-visible{border-color:var(--accent);background:var(--accent-soft);outline:none}.dropzone[data-over=true]{border-color:var(--accent);background:var(--accent-soft)}.dropzone strong{display:block;font-size:1.05rem;margin-bottom:4px}.dropzone small{color:var(--fg-muted)}.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--accent);background:var(--accent);color:var(--accent-fg);font:inherit;font-size:.94rem;font-weight:600;padding:9px 16px;border-radius:8px;cursor:pointer;text-decoration:none}.btn:hover{filter:brightness(1.08)}.btn[disabled]{opacity:.5;cursor:default;filter:none}.btn-ghost{background:transparent;color:var(--fg);border-color:var(--border)}.tool-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px}.tool-bar .spacer{flex:1}.progress{display:inline-flex;align-items:center;gap:8px;font-size:.9rem;color:var(--fg-muted);font-variant-numeric:tabular-nums}.progress:before{content:"";width:13px;height:13px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.progress:before{animation-duration:2.4s}}.privacy-note{font-size:.85rem;color:var(--fg-muted);margin-top:12px}.file-list{list-style:none;margin:20px 0 0;padding:0;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.file-list:empty{display:none}.file-list li{display:flex;align-items:center;gap:12px;padding:11px 14px;border-bottom:1px solid var(--border);font-size:.9rem}.file-list li:last-child{border-bottom:none}.file-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-meta{color:var(--fg-muted);font-variant-numeric:tabular-nums;font-size:.84rem;white-space:nowrap}.file-status{font-size:.84rem;white-space:nowrap}.file-status[data-state=error]{color:var(--danger)}.file-status[data-state=done]{color:var(--ok)}.dl{color:var(--accent);font-weight:600;text-decoration:none;white-space:nowrap}.alert{border:1px solid var(--danger);background:color-mix(in srgb,var(--danger) 8%,transparent);color:var(--danger);border-radius:8px;padding:10px 14px;font-size:.9rem;margin-top:16px}.alert:empty{display:none}details.faq{border-bottom:1px solid var(--border);padding:4px 0}details.faq summary{cursor:pointer;font-weight:600;padding:10px 0;list-style:none}details.faq summary::-webkit-details-marker{display:none}details.faq summary:before{content:"+";display:inline-block;width:1.1em;color:var(--accent);font-weight:700}details.faq[open] summary:before{content:"−"}details.faq p{margin:0 0 14px;color:var(--fg-muted)}.grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));padding:0;margin:20px 0 0;list-style:none}.card{display:block;border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;text-decoration:none;color:var(--fg);background:var(--bg-soft)}.card:hover{border-color:var(--accent)}.card strong{display:block;font-size:.98rem}.crumb{font-size:.85rem;margin-bottom:6px}.crumb a{color:var(--fg-muted);text-decoration:none}.crumb a:hover{color:var(--accent)}.answer{border-left:3px solid var(--accent);background:var(--bg-soft);padding:14px 18px;border-radius:0 var(--radius) var(--radius) 0;font-size:1.02rem;margin-bottom:28px}.guide-list{list-style:none;padding:0;margin:24px 0 0;border-top:1px solid var(--border)}.guide-list li{border-bottom:1px solid var(--border)}.guide-list a{display:block;padding:16px 0;text-decoration:none;color:var(--fg)}.guide-list a:hover strong{color:var(--accent)}.guide-list strong{display:block;font-size:1.05rem;letter-spacing:-.01em}.guide-list span{display:block;color:var(--fg-muted);font-size:.9rem;margin-top:3px}.card small{color:var(--fg-muted);font-size:.82rem}.ad-slot{margin:32px 0;min-height:90px;display:flex;align-items:center;justify-content:center;border:1px dashed var(--border);border-radius:var(--radius);color:var(--fg-muted);font-size:.78rem;letter-spacing:.04em;text-transform:uppercase}