*{box-sizing:border-box}
:root{--blue:#315bb5;--ink:#202b3b;--muted:#718096;--line:#e8ecf1;--bg:#fff;--soft:#f6f8fb}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;font-size:14px}
a{text-decoration:none;color:inherit}
.wrap{max-width:1120px;margin:auto;padding:0 25px}
header{height:74px;border-bottom:1px solid var(--line);background:white}
.nav{height:100%;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:11px;font-size:19px;font-weight:700;letter-spacing:-.5px}
.logo{width:34px;height:34px;background:var(--blue);border-radius:7px;color:white;display:grid;place-items:center;font-weight:800;font-size:18px}
.links{display:flex;gap:30px;align-items:center;color:#687588;font-size:13px}
.links a:hover,.links a.active{color:var(--blue)}
main{min-height:calc(100vh - 160px)}
.hero{text-align:center;padding:65px 15px 30px}
.eyebrow{font-size:11px;color:var(--blue);font-weight:700;letter-spacing:1.5px;text-transform:uppercase}
h1{font-size:38px;letter-spacing:-1.4px;margin:15px 0 12px;font-weight:680}
.subtitle{color:var(--muted);font-size:14px;line-height:1.7;max-width:550px;margin:auto}
.tool{max-width:750px;margin:25px auto 65px;border:1px solid var(--line);border-radius:9px;background:white;box-shadow:0 8px 35px #243c6010;overflow:hidden}
.tool-head{padding:18px 23px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}
.tool-head strong{font-size:13px}
.local{font-size:11px;color:#27835a}
.tool-body{padding:24px}
.drop{border:1.5px dashed #cbd5e2;border-radius:7px;background:#fafbfd;text-align:center;padding:43px 15px;transition:.2s;cursor:pointer}
.drop:hover,.drop.over{border-color:var(--blue);background:#f3f6ff}
.upload-icon{font-size:29px;color:var(--blue);margin-bottom:10px}
.drop strong{display:block;font-size:14px}
.drop p{font-size:12px;color:var(--muted);margin:8px 0 16px}
.btn{border:0;border-radius:5px;padding:11px 18px;background:var(--blue);color:white;font-size:12px;font-weight:650;cursor:pointer;display:inline-block}
.btn:hover{background:#24478f}
.btn:disabled{opacity:.45;cursor:not-allowed}
input[type=file]{display:none}
.controls{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:23px}
.field label{display:block;font-size:12px;font-weight:650;margin-bottom:9px}
select{width:100%;padding:11px;border:1px solid var(--line);border-radius:5px;background:white;color:var(--ink);font-size:13px}
.quality{margin-top:19px}
.quality-top{display:flex;justify-content:space-between;font-size:12px;margin-bottom:10px}
input[type=range]{width:100%;accent-color:var(--blue)}
.file-list{margin-top:20px}
.file-row{display:flex;align-items:center;gap:13px;padding:12px;border:1px solid var(--line);border-radius:6px;margin-top:9px}
.preview{width:46px;height:46px;border-radius:5px;background:var(--soft);object-fit:cover}
.file-info{flex:1;min-width:0}
.file-info strong{display:block;font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-info span{font-size:11px;color:var(--muted)}
.remove{border:0;background:none;color:#8994a5;cursor:pointer;font-size:19px}
.actions{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:23px}
.status{font-size:11px;color:var(--muted)}
.result{margin-top:17px;padding:13px;background:#f0f7f2;border-radius:5px;color:#28754d;font-size:12px;display:none}
.features{background:var(--soft);border-top:1px solid var(--line);padding:44px 0}
.features h2{text-align:center;font-size:21px;margin:0 0 25px}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature{padding:20px;background:white;border:1px solid var(--line);border-radius:6px}
.feature b{font-size:13px}
.feature p{font-size:12px;color:var(--muted);line-height:1.7;margin-bottom:0}
footer{border-top:1px solid var(--line);padding:23px 0;color:#8993a2;font-size:11px}
.foot{display:flex;justify-content:space-between;gap:15px}
.foot a{margin-left:17px}
.page{max-width:850px;margin:auto;padding:65px 25px 85px}
.page h1{font-size:36px}
.page h2{font-size:19px;margin:35px 0 10px}
.page p,.page li{color:#687588;line-height:1.85;font-size:14px}
.page ul{padding-left:22px}
.about-box{background:var(--soft);padding:22px;border:1px solid var(--line);border-radius:7px;margin-top:30px}
@media(max-width:650px){.wrap{padding:0 17px}.links{gap:15px}.hero{padding-top:45px}h1{font-size:30px}.tool-body{padding:16px}.controls{grid-template-columns:1fr}.feature-grid{grid-template-columns:1fr}.foot{flex-direction:column}.page{padding:45px 20px}.tool{margin-bottom:40px}}
</style>