:root{--bg:#f7f6f2;--surface:#fff;--text:#1c1f1e;--muted:#5d6662;--line:#e3e1da;--accent:#0f766e;--accent-strong:#0b5c56;--accent-soft:#e2f2ef;--warn-soft:#fff6e0;--radius:14px;--font:"Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, "SFMono-Regular", Consolas, monospace}@media (prefers-color-scheme:dark){:root{--bg:#121514;--surface:#1a1f1d;--text:#e9ece9;--muted:#a2aba6;--line:#2b322f;--accent:#2bb3a6;--accent-strong:#5fcfc3;--accent-soft:#163330;--warn-soft:#332a12}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--text);font-family:var(--font);margin:0;font-size:16px;line-height:1.6}a{color:var(--accent)}input[type=range],input[type=radio]{accent-color:var(--accent)}a:hover{color:var(--accent-strong)}img{max-width:100%}.wrap{max-width:960px;margin:0 auto;padding:0 16px}.site-header{border-bottom:1px solid var(--line);background:var(--surface)}.site-header .wrap{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;min-height:60px;display:flex}.brand{color:var(--text);align-items:center;gap:10px;font-size:1.15rem;font-weight:700;text-decoration:none;display:flex}.brand img{width:28px;height:28px}.nav{gap:18px;font-size:.95rem;display:flex}.nav a{color:var(--muted);text-decoration:none}.nav a:hover{color:var(--text)}main{padding:32px 0 56px}h1{letter-spacing:-.01em;margin:0 0 10px;font-size:clamp(1.6rem,4vw,2.2rem);line-height:1.2}h2{margin:36px 0 10px;font-size:1.3rem}h3{margin:20px 0 6px;font-size:1.05rem}.lead{color:var(--muted);max-width:680px;margin:0 0 24px;font-size:1.08rem}.crumbs{color:var(--muted);margin-bottom:12px;font-size:.88rem}.crumbs a{color:var(--muted)}.tool-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;display:grid}.tool-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);color:var(--text);padding:20px;text-decoration:none;transition:border-color .15s,transform .15s;display:block}.tool-card:hover{border-color:var(--accent);color:var(--text);transform:translateY(-2px)}.tool-card .icon{background:var(--accent-soft);width:40px;height:40px;color:var(--accent);border-radius:10px;place-items:center;margin-bottom:12px;font-size:1.2rem;font-weight:700;display:grid}.tool-card h3{margin:0 0 6px}.tool-card p{color:var(--muted);margin:0;font-size:.94rem}.tag{letter-spacing:.03em;text-transform:uppercase;color:var(--muted);margin-bottom:4px;font-size:.75rem;font-weight:600;display:inline-block}.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px}.tool-layout{grid-template-columns:1fr 1fr;align-items:start;gap:18px;display:grid}@media (width<=760px){.tool-layout{grid-template-columns:1fr}}.field{margin-bottom:14px}.field label{margin-bottom:5px;font-size:.92rem;font-weight:600;display:block}.field .hint{color:var(--muted);margin-top:4px;font-size:.82rem;display:block}input[type=number],input[type=text],select{border:1px solid var(--line);width:100%;font:inherit;background:var(--bg);color:var(--text);border-radius:10px;padding:10px 12px}input:focus,select:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:#0000}.row2{grid-template-columns:1fr 1fr;gap:12px;display:grid}.swap-row{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:end;gap:8px;display:grid}.swap-row button{margin-bottom:14px;padding:9px 12px;font-size:1.1rem}.radio-row{flex-wrap:wrap;gap:8px;display:flex}.radio-row label{border:1px solid var(--line);cursor:pointer;border-radius:999px;align-items:center;gap:6px;padding:6px 12px;font-size:.9rem;font-weight:500;display:flex}.radio-row input:checked+span{color:var(--accent);font-weight:700}button,.btn{background:var(--accent);color:#fff;font:inherit;cursor:pointer;border:0;border-radius:10px;justify-content:center;align-items:center;gap:8px;padding:11px 18px;font-weight:600;text-decoration:none;display:inline-flex}button:hover,.btn:hover{background:var(--accent-strong);color:#fff}button.secondary{color:var(--accent);border:1px solid var(--accent);background:0 0}button.secondary:hover{background:var(--accent-soft);color:var(--accent)}button:disabled{opacity:.5;cursor:not-allowed}.result-big{color:var(--accent);font-variant-numeric:tabular-nums;margin:4px 0 2px;font-size:clamp(1.8rem,5vw,2.4rem);font-weight:750}.result-label{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-size:.85rem;font-weight:600}.result-list{border-top:1px solid var(--line);margin:16px 0 0;padding:0;list-style:none}.result-list li{border-bottom:1px solid var(--line);justify-content:space-between;gap:12px;padding:9px 0;font-size:.95rem;display:flex}.result-list li span:last-child{font-variant-numeric:tabular-nums;text-align:right;font-weight:600}.note{background:var(--warn-soft);border-radius:10px;margin-top:16px;padding:12px 14px;font-size:.88rem}.notice{background:var(--accent-soft);border-left:4px solid var(--accent);border-radius:10px;max-width:680px;margin:-8px 0 24px;padding:12px 14px;font-size:.94rem}table.data{border-collapse:collapse;background:var(--surface);border-radius:var(--radius);width:100%;font-size:.92rem;overflow:hidden}table.data th,table.data td{text-align:left;border-bottom:1px solid var(--line);padding:10px 12px}table.data th{background:var(--accent-soft);font-weight:600}.table-scroll{overflow-x:auto}.content{max-width:720px}.content p,.content li{color:var(--text)}details{background:var(--surface);border:1px solid var(--line);border-radius:10px;margin-bottom:10px;padding:12px 16px}details summary{cursor:pointer;font-weight:600}details p{color:var(--muted);margin:8px 0 0}.ad-slot{min-height:90px;margin:28px 0}.dropzone{border:2px dashed var(--line);border-radius:var(--radius);text-align:center;color:var(--muted);cursor:pointer;margin-top:6px;padding:32px 16px;transition:border-color .15s,background .15s;display:block}.dropzone.drag,.dropzone:hover{border-color:var(--accent);background:var(--accent-soft)}.file-list{margin:16px 0 0;padding:0;list-style:none}.file-list li{border-bottom:1px solid var(--line);align-items:center;gap:12px;padding:10px 0;font-size:.92rem;display:flex}.file-list img{object-fit:cover;border:1px solid var(--line);border-radius:8px;width:48px;height:48px}.file-list .meta{flex:1;min-width:0}.file-list .name{text-overflow:ellipsis;white-space:nowrap;font-weight:600;overflow:hidden}.file-list .size{color:var(--muted);font-size:.84rem}.saving{color:var(--accent);font-weight:600}.site-footer{border-top:1px solid var(--line);color:var(--muted);padding:28px 0;font-size:.88rem}.site-footer .wrap{flex-wrap:wrap;justify-content:space-between;gap:16px;display:flex}.site-footer a{color:var(--muted);margin-right:14px}.related{margin-top:40px}