:root{--accent:#1e88e5;--accent-dark:#1565c0;--text:#222;--muted:#666;--border:#e2e6ea;--bg:#f7f9fb;--card:#fff;--danger:#d32f2f;--ok:#2e7d32}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text);line-height:1.55}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1060px;margin:0 auto;padding:0 16px}
.topbar{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20}
.topbar-in{display:flex;align-items:center;gap:22px;height:58px}
.logo{display:flex;align-items:center;gap:8px;font-size:22px;font-weight:700;color:var(--text)}
.logo:hover{text-decoration:none}
.logo svg{width:32px;height:32px}
.logo span b{color:var(--accent)}
nav.main{display:flex;gap:18px;margin-left:auto;font-size:15px}
nav.main a{color:var(--text)}
nav.main a:hover{color:var(--accent);text-decoration:none}
.hero{text-align:center;padding:38px 16px 10px}
.hero h1{font-size:34px;margin:0 0 8px;font-weight:700}
.hero p{color:var(--muted);margin:0 auto;max-width:640px}
.dropzone{margin:22px auto;max-width:760px;background:var(--card);border:2px dashed #b9c9d6;border-radius:10px;padding:34px 18px;text-align:center;transition:.15s}
.dropzone.drag{background:#eaf4fd;border-color:var(--accent)}
.dropzone .big-icon{font-size:44px;line-height:1}
.btn{display:inline-block;background:var(--accent);color:#fff;border:0;border-radius:6px;padding:12px 26px;font-size:16px;cursor:pointer}
.btn:hover{background:var(--accent-dark)}
.btn.small{padding:7px 14px;font-size:14px}
.btn.ghost{background:#fff;color:var(--accent);border:1px solid var(--accent)}
.btn.danger{background:var(--danger)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.note{color:var(--muted);font-size:13px;margin-top:10px}
.tabs{display:flex;gap:8px;justify-content:center;margin:14px 0 0}
.tab{border:1px solid var(--border);background:#fff;padding:8px 16px;border-radius:20px;cursor:pointer;font-size:14px}
.tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.url-row{display:none;max-width:760px;margin:12px auto 0;gap:8px}
.url-row.show{display:flex}
.url-row input{flex:1;padding:11px;border:1px solid var(--border);border-radius:6px;font-size:15px}
.exp-row{margin-top:14px;font-size:14px;color:var(--muted)}
.exp-row select{padding:7px;border:1px solid var(--border);border-radius:6px;background:#fff}
#dragOverlay{position:fixed;inset:0;background:rgba(30,136,229,.92);color:#fff;display:none;align-items:center;justify-content:center;font-size:28px;font-weight:700;z-index:99;text-align:center;padding:20px}
#dragOverlay.show{display:flex}
.queue,.results{max-width:760px;margin:18px auto}
.q-item,.r-card{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:12px;margin-bottom:12px;display:flex;gap:12px;align-items:flex-start}
.q-item img,.r-card img.thumb{width:76px;height:76px;object-fit:cover;border-radius:6px;border:1px solid var(--border);background:#eee}
.q-meta,.r-meta{flex:1;min-width:0}
.q-name{font-weight:600;word-break:break-all}
.q-size{color:var(--muted);font-size:13px}
.progress{height:8px;background:#eef1f4;border-radius:4px;margin-top:8px;overflow:hidden}
.progress i{display:block;height:100%;background:var(--accent);width:0;transition:width .2s}
.q-err{color:var(--danger);font-size:13px;margin-top:6px}
.link-row{display:flex;gap:6px;margin-top:7px;align-items:center}
.link-row label{width:118px;flex:none;font-size:13px;color:var(--muted)}
.link-row input{flex:1;padding:7px;border:1px solid var(--border);border-radius:5px;font-size:13px;background:#fafbfc;min-width:0}
.copy-btn{flex:none;background:#eef4fa;border:1px solid var(--border);border-radius:5px;padding:7px 10px;cursor:pointer;font-size:13px}
.copy-btn:hover{border-color:var(--accent);color:var(--accent)}
.badge-demo{display:inline-block;background:#fff3cd;border:1px solid #e6c860;color:#7a5b00;border-radius:5px;padding:8px 12px;font-size:14px;margin:14px auto;max-width:760px}
.demo-wrap{text-align:center}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:28px auto;max-width:960px}
.feature{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:18px;text-align:center}
.feature h3{margin:6px 0;font-size:17px}
.feature p{color:var(--muted);font-size:14px;margin:0}
.section{background:#fff;border-top:1px solid var(--border);padding:30px 0 40px;margin-top:20px}
.section h2{font-size:24px}
.section h3{font-size:18px;margin-top:22px}
.section p,.section li{color:#444}
details{border:1px solid var(--border);border-radius:6px;padding:12px 14px;margin-bottom:10px;background:#fff}
summary{cursor:pointer;font-weight:600}
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:16px 0 30px}
.gallery a{display:block;border:1px solid var(--border);border-radius:8px;overflow:hidden;background:#fff}
.gallery img{width:100%;height:130px;object-fit:cover;display:block}
.empty{color:var(--muted);text-align:center;padding:26px;border:1px dashed var(--border);border-radius:8px;background:#fff}
footer{background:#fff;border-top:1px solid var(--border);padding:22px 0;color:var(--muted);font-size:14px;margin-top:30px}
footer .links{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:8px}
.page{background:#fff;border:1px solid var(--border);border-radius:8px;padding:24px;margin:24px auto;max-width:860px}
.viewer-img{max-width:100%;height:auto;border:1px solid var(--border);border-radius:8px;background:#fff}
.viewer-actions{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}
#toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(80px);background:#222;color:#fff;padding:11px 18px;border-radius:6px;z-index:100;transition:.25s;font-size:14px}
#toast.show{transform:translateX(-50%) translateY(0)}
.hidden{display:none!important}
@media(max-width:700px){
 .hero h1{font-size:26px}
 .features{grid-template-columns:1fr}
 .gallery{grid-template-columns:repeat(2,1fr)}
 nav.main{gap:12px;font-size:14px}
 .dropzone{padding:26px 12px;width:100%}
 .link-row label{width:92px}
 .topbar-in{gap:12px}
}