:root{--ink:#1d2433;--muted:#5d6677;--line:#e3e6ec;--bg:#f6f7f9;--card:#fff;--brand:#d93a3f;--brand-dark:#b52a30;--brand-soft:#fdecec;--ok:#1f8a5b;--radius:14px;--tap:44px;color:var(--ink);background:var(--bg);font-family:Segoe UI,system-ui,-apple-system,Microsoft JhengHei,Hiragino Sans,Yu Gothic,sans-serif}*{box-sizing:border-box}body{background:var(--bg);margin:0;line-height:1.6}a{color:inherit}.wrap{max-width:1080px;margin:0 auto;padding:0 16px}header{background:var(--card);border-bottom:1px solid var(--line)}header .wrap{flex-wrap:wrap;align-items:center;gap:16px;min-height:60px;display:flex}.logo{align-items:center;gap:10px;font-size:19px;font-weight:800;text-decoration:none;display:flex}.logo i{background:var(--brand);color:#fff;letter-spacing:.02em;border-radius:9px;place-items:center;width:34px;height:34px;font-size:13px;font-style:normal;display:grid}nav.tools{scrollbar-width:none;flex:auto;order:3;gap:4px;width:100%;padding-bottom:8px;display:flex;overflow-x:auto}nav.tools a{white-space:nowrap;color:var(--muted);border-radius:999px;padding:8px 12px;font-size:14px;text-decoration:none}nav.tools a[aria-current=page],nav.tools a:hover{background:var(--brand-soft);color:var(--brand-dark)}.langs{gap:4px;margin-left:auto;font-size:13px;display:flex}.langs a{color:var(--muted);border-radius:8px;padding:6px 9px;text-decoration:none}.langs a[aria-current=true]{background:var(--ink);color:#fff}@media (min-width:900px){nav.tools{order:0;width:auto;padding-bottom:0}}main{padding:28px 0 40px}.hero{text-align:center;margin-bottom:20px}h1{margin:0 0 10px;font-size:clamp(26px,5vw,40px);line-height:1.2}.hero p{color:var(--muted);max-width:640px;margin:0 auto}.badges{color:var(--ok);flex-wrap:wrap;justify-content:center;gap:8px;margin-top:12px;font-size:13px;display:flex}.badges span:before{content:"✓ "}.chips{flex-wrap:wrap;justify-content:center;gap:8px;margin:18px 0 0;display:flex}.chips a{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:7px 14px;font-size:14px;text-decoration:none}.chips a:hover{border-color:var(--brand);color:var(--brand-dark)}.tool-card,.result{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:0 6px 24px #1d24330f}.drop{text-align:center;cursor:pointer;background:#fff8f8;border:2px dashed #f0a9ab;border-radius:12px;flex-direction:column;justify-content:center;align-items:center;gap:10px;min-height:260px;padding:24px;transition:background .15s;display:flex}.drop.over{background:var(--brand-soft);border-color:var(--brand)}.drop.compact{min-height:110px}.drop .big{font-size:20px;font-weight:700}.drop .or{color:var(--muted);font-size:14px}.choose{background:var(--brand);color:#fff;min-height:var(--tap);border-radius:12px;align-items:center;gap:8px;padding:14px 28px;font-size:17px;font-weight:700;display:inline-flex}.drop:hover .choose{background:var(--brand-dark)}.drop input{opacity:0;width:1px;height:1px;position:absolute}.local{color:var(--muted);text-align:center;margin:12px 0 0;font-size:13px}.file-list{margin:14px 0 0;padding:0;list-style:none}.file-list li{border:1px solid var(--line);background:#fbfbfc;border-radius:10px;align-items:center;gap:8px;margin-bottom:8px;padding:10px 12px;display:flex}.fname{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-weight:600;overflow:hidden}.fsize{color:var(--muted);font-size:13px}.icon{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:8px;width:36px;height:36px}.icon:disabled{opacity:.35}fieldset{border:0;margin:14px 0 0;padding:0}legend{margin-bottom:6px;font-weight:700}.radio{align-items:flex-start;gap:8px;padding:6px 0;display:flex}.ranges{margin-top:8px;display:block}.ranges input{border:1px solid var(--line);border-radius:8px;width:100%;margin-top:4px;padding:10px;font-size:16px;display:block}.actions{text-align:center;margin-top:16px}.go{color:#fff;background:var(--brand);cursor:pointer;border:0;border-radius:12px;width:100%;max-width:420px;min-height:52px;font-size:18px;font-weight:800}.go:disabled{opacity:.6;cursor:progress}.message{text-align:center;min-height:1.6em;color:var(--brand-dark);margin:10px 0 0;font-weight:600}.chooser p{text-align:center;font-weight:700}.chooser-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px;display:grid}.chooser-grid button{text-align:left;border:1px solid var(--line);cursor:pointer;font:inherit;background:#fff;border-radius:12px;padding:14px}.chooser-grid button:hover{border-color:var(--brand)}.chooser-grid small,.grid small{color:var(--muted);font-size:13px;display:block}.result{text-align:center}.result h2{color:var(--ok);margin-top:0}.sizes{font-size:16px}.sizes b{color:var(--ok)}.note{color:var(--muted);font-size:14px}.dl{border:1px solid var(--line);text-align:left;border-radius:10px;justify-content:space-between;gap:12px;margin:6px 0;padding:10px 14px;text-decoration:none;display:flex}.dl small{color:var(--muted)}.dl.primary{background:var(--ok);color:#fff;border:0;justify-content:center;align-items:center;gap:10px;min-width:min(100%,360px);padding:16px 34px;font-size:19px;font-weight:800;display:inline-flex}.dl.primary small{color:#dff5ea;font-weight:400}.result details{text-align:left;max-width:520px;margin:12px auto}.again{border:1px solid var(--line);cursor:pointer;font:inherit;background:0 0;border-radius:10px;margin:14px auto 0;padding:10px 18px;display:block}.ad-slot{text-align:center;margin:20px auto}.ad-label{letter-spacing:.08em;color:#8a93a3;margin-bottom:6px;font-size:11px;display:block}.ad-space{justify-content:center;align-items:center;display:flex;overflow:hidden}.ad-space iframe{border:0;max-width:100%;display:block}.ad-consent{max-width:320px;color:var(--muted);border:1px dashed var(--line);padding:12px;font-size:13px}.ad-consent button{min-height:var(--tap);margin-top:6px;padding:8px 14px}.ad-slot[data-ad=up-d]{display:none}@media (min-width:800px){.ad-slot[data-ad=up-d]{display:block}.ad-slot[data-ad=up-m]{display:none}}section.block{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);margin-top:22px;padding:22px}section.block h2{margin:0 0 12px;font-size:21px}ol.steps{margin:0;padding-left:1.3em}ol.steps li{margin:6px 0}.faq details{border-bottom:1px solid var(--line);padding:4px 0}.faq summary{cursor:pointer;min-height:var(--tap);padding:10px 0;font-weight:700}.faq p,.about p{color:var(--muted);margin:0 0 10px}.grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;display:grid}.grid a{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;text-decoration:none;display:block}.grid a:hover{border-color:var(--brand)}.grid b{margin-bottom:2px;font-size:17px;display:block}footer{border-top:1px solid var(--line);background:var(--card);color:var(--muted);padding:22px 0 34px;font-size:14px}footer .wrap{flex-wrap:wrap;justify-content:space-between;gap:12px;display:flex}[hidden]{display:none!important}