:root{--bg:#f3f0f5;--card:#fff;--ink:#33333b;--mute:#6b6b78;--line:#e6e2ea;--brand:#e5322d;--brand-d:#c42823;--tint:#fdecea;--err:#c92a2a;--sh:0 6px 20px rgba(30,20,50,.10)}
*{box-sizing:border-box;margin:0}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink);line-height:1.55}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.nav{display:flex;align-items:center;justify-content:space-between;gap:12px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:21px;color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.logo{width:34px;height:34px;border-radius:8px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:12px;font-weight:800}
.menu{display:flex;gap:2px;align-items:center}
.menu a{font-weight:700;font-size:13px;text-transform:uppercase;color:var(--ink);text-decoration:none;padding:10px 12px;border-radius:8px}
.menu a:hover{color:var(--brand);background:var(--tint)}
.menu a.cta{background:var(--brand);color:#fff;margin-left:6px}.menu a.cta:hover{background:var(--brand-d)}
@media(max-width:760px){.menu a:not(.cta){display:none}}
.hero{text-align:center;padding:46px 0 24px}
h1{font-size:clamp(28px,5vw,42px);font-weight:700;line-height:1.2}
.hero p{max-width:660px;margin:12px auto 0;color:var(--mute);font-size:18px}
.pill{display:inline-block;margin-top:14px;font-size:13px;color:var(--mute)}
.chips{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin:8px 0 22px}
.chips button{background:#fff;border:1px solid var(--line);border-radius:99px;padding:9px 18px;font:inherit;font-size:14px;font-weight:600;cursor:pointer;color:var(--ink)}
.chips button:hover{border-color:var(--brand)}
.chips button.on{background:var(--brand);border-color:var(--brand);color:#fff}
.tabs{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}
.tab{display:block;background:#fff;border:1px solid transparent;border-radius:10px;padding:22px 20px;text-align:left;text-decoration:none;color:var(--ink);transition:.15s;box-shadow:0 1px 2px rgba(30,20,50,.06)}
.tab:hover{box-shadow:var(--sh);transform:translateY(-3px)}
.tab.hide{display:none}
.tab em{font-style:normal;display:grid;place-items:center;width:52px;height:52px;border-radius:12px;font-size:26px;margin-bottom:14px;background:var(--tint)}
.tab b{display:block;font-size:17px;margin-bottom:4px}
.tab span{display:block;font-size:14px;color:var(--mute);line-height:1.45}
[data-cat=optimize] em{background:#e6f6ec}[data-cat=convert] em{background:#fff3da}[data-cat=edit] em{background:#efe9ff}[data-cat=image] em{background:#e5f1ff}
.panel{background:#fff;border-radius:14px;padding:28px;box-shadow:var(--sh);max-width:820px;margin:0 auto 10px}
.drop{border:2px dashed #d4cfdb;border-radius:12px;padding:46px 16px;text-align:center;cursor:pointer;background:#faf9fb;transition:.15s}
.drop:hover,.drop.over{border-color:var(--brand);background:var(--tint)}
.drop strong{display:block;font-size:20px}
.drop small{color:var(--mute)}
.btn{background:var(--brand);color:#fff;border:0;border-radius:10px;padding:15px 34px;font:inherit;font-size:17px;font-weight:700;cursor:pointer;transition:.15s}
.btn:hover{background:var(--brand-d)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line);font-size:15px;padding:12px 22px}
.drop .btn{display:inline-block;margin-top:14px;pointer-events:none}
:focus-visible{outline:3px solid #f5a09d;outline-offset:2px}
.files{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:8px}
.files li{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:10px;padding:10px 12px}
.files li:before{content:"FILE";font-size:10px;font-weight:800;color:#fff;background:var(--brand);border-radius:5px;padding:3px 5px}
.files .n{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}
.files .s{color:var(--mute);font-size:12px;white-space:nowrap}
.ic{background:#fff;border:1px solid var(--line);border-radius:8px;width:32px;height:32px;cursor:pointer;color:var(--mute)}
.ic:hover{color:var(--brand);border-color:var(--brand)}
.opts{margin-top:18px;display:grid;gap:10px;font-size:14px}
.opts label{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.opts input[type=text],.opts input[type=number],.opts select{border:1px solid var(--line);border-radius:8px;padding:10px 12px;font:inherit;background:#fff;color:var(--ink)}
.opts input[type=text]{flex:1;min-width:160px}.opts input[type=number]{width:110px}
.actions{margin-top:20px;display:flex;gap:10px;flex-wrap:wrap;align-items:center;justify-content:center}
.msg{margin-top:14px;font-size:14px;color:var(--mute);text-align:center}.msg.err{color:var(--err)}
.bar{height:8px;background:var(--line);border-radius:4px;overflow:hidden;margin-top:16px;display:none}
.bar i{display:block;height:100%;width:0;background:var(--brand);transition:width .2s}
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:10px;margin-top:16px}
.thumbs img{width:100%;border:1px solid var(--line);border-radius:8px}
.ad{margin:22px auto;text-align:center;min-height:100px;max-width:100%;overflow:hidden}
.ad:empty{display:none}
.ad:not(:empty):before{content:"Advertisement";display:block;font-size:11px;color:var(--mute);margin-bottom:4px}
h2{font-size:clamp(22px,4vw,28px);margin:0 0 16px;text-align:center}
.feat,.how{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin:10px 0 40px}
.feat div,.how div{background:#fff;border-radius:10px;padding:20px;font-size:14px;color:var(--mute)}
.feat b,.how b{display:block;color:var(--ink);font-size:16px;margin-bottom:4px}
.how{counter-reset:s}.how div{counter-increment:s}
.how div:before{content:counter(s);display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--brand);color:#fff;font-weight:700;margin-bottom:8px}
details{background:#fff;border-radius:10px;padding:14px 18px;margin-bottom:10px;font-size:14px;color:var(--mute)}
summary{cursor:pointer;font-weight:600;color:var(--ink);font-size:15px}
details p{margin-top:8px}
.guide{max-width:780px;margin:30px auto 0}.guide p{color:var(--mute);margin-bottom:14px}
footer{background:#33333b;color:#c9c6d1;font-size:14px;text-align:center;padding:32px 0;margin-top:50px}
footer .links a{color:#fff;margin:0 10px;text-decoration:none;opacity:.9}footer .links a:hover{opacity:1;text-decoration:underline}