:root[data-theme="light"]{--bg:#f8fafc;--bg-soft:#f1f5f9;--card-bg:#fff;--text:#0f172a;--text-muted:#64748b;--accent:#8b5cf6;--accent-dark:#7c3aed;--accent-light:#a78bfa;--primary:#3b82f6;--success:#10b981;--danger:#ef4444;--border:#e2e8f0;--shadow:0 1px 3px rgba(15,23,42,.06),0 4px 12px rgba(15,23,42,.04);--shadow-lg:0 10px 40px rgba(15,23,42,.10)}
:root[data-theme="dark"]{--bg:#0f172a;--bg-soft:#1e293b;--card-bg:#1e293b;--text:#f8fafc;--text-muted:#94a3b8;--accent:#a78bfa;--accent-dark:#8b5cf6;--accent-light:#c4b5fd;--primary:#60a5fa;--success:#34d399;--danger:#f87171;--border:#334155;--shadow:0 1px 3px rgba(0,0,0,.3),0 4px 12px rgba(0,0,0,.2);--shadow-lg:0 10px 40px rgba(0,0,0,.4)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh;display:flex;flex-direction:column;transition:background .25s,color .25s}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.site-header{background:var(--card-bg);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;backdrop-filter:blur(10px)}
.header-inner{max-width:1200px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--text);text-decoration:none}
.brand img{width:36px;height:36px}
.brand .emoji{font-size:22px}
.brand-text span{color:var(--accent)}
.header-nav{display:flex;align-items:center;gap:8px}
.header-nav a{color:var(--text-muted);padding:8px 14px;border-radius:8px;font-size:14.5px;font-weight:500;transition:all .2s}
.header-nav a:hover{background:var(--bg-soft);color:var(--text);text-decoration:none}
.theme-toggle{background:var(--bg-soft);border:1px solid var(--border);color:var(--text);width:38px;height:38px;border-radius:10px;cursor:pointer;font-size:17px;display:flex;align-items:center;justify-content:center;transition:all .2s}
.theme-toggle:hover{background:var(--accent);color:#fff}
main{flex:1}
.wrap{max-width:1100px;margin:0 auto;padding:32px 20px 60px}
.hero{text-align:center;padding:40px 20px 30px}
.hero h1{font-size:clamp(28px,5vw,44px);font-weight:800;line-height:1.15;margin-bottom:14px;background:linear-gradient(135deg,var(--accent),var(--primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:clamp(15px,2vw,18px);color:var(--text-muted);max-width:640px;margin:0 auto}
.hero-badges{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:20px}
.hero-badges span{background:var(--bg-soft);border:1px solid var(--border);padding:6px 12px;border-radius:20px;font-size:12.5px;color:var(--text-muted);font-weight:500}
.section-title{font-size:22px;font-weight:800;margin:40px 0 18px;display:flex;align-items:center;gap:10px}
.section-title::before{content:'';width:4px;height:22px;background:var(--accent);border-radius:4px}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.tool-card{background:var(--card-bg);border:1px solid var(--border);border-radius:14px;padding:20px;transition:all .22s ease;display:flex;flex-direction:column;gap:8px;text-decoration:none;color:var(--text)}
.tool-card:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:var(--shadow-lg);text-decoration:none}
.tool-card .icon{font-size:30px;line-height:1;margin-bottom:4px}
.tool-card .title{font-size:16px;font-weight:700;color:var(--text)}
.tool-card .desc{font-size:13.5px;color:var(--text-muted);line-height:1.5}
.tool-card .badge{align-self:flex-start;background:var(--accent);color:#fff;font-size:10.5px;font-weight:700;padding:3px 8px;border-radius:6px;text-transform:uppercase;letter-spacing:.4px}
.hub{background:var(--card-bg);border:1px solid var(--border);border-radius:14px;margin-top:24px;overflow:hidden}
.hub summary{padding:18px 22px;cursor:pointer;font-weight:700;font-size:16px;list-style:none;display:flex;align-items:center;justify-content:space-between;user-select:none;transition:background .2s}
.hub summary::-webkit-details-marker{display:none}
.hub summary:hover{background:var(--bg-soft)}
.hub summary::after{content:'▾';font-size:18px;color:var(--accent);transition:transform .25s}
.hub[open] summary::after{transform:rotate(180deg)}
.hub-content{padding:4px 22px 22px;border-top:1px solid var(--border)}
.hub-hint{font-size:13px;color:var(--text-muted);margin:14px 0 16px;padding:10px 14px;background:var(--bg-soft);border-radius:8px;border-left:3px solid var(--accent)}
.editor{background:var(--card-bg);border:1px solid var(--border);border-radius:16px;padding:28px;margin-top:24px;box-shadow:var(--shadow)}
.drop-zone{border:2.5px dashed var(--border);border-radius:14px;padding:44px 24px;text-align:center;cursor:pointer;transition:all .22s;background:var(--bg-soft)}
.drop-zone:hover,.drop-zone.dragover{border-color:var(--accent);background:rgba(139,92,246,.06)}
.drop-zone .dz-icon{font-size:44px;margin-bottom:12px}
.drop-zone .dz-title{font-size:17px;font-weight:700;margin-bottom:6px}
.drop-zone .dz-hint{font-size:13.5px;color:var(--text-muted)}
.preview-section{display:none;margin-top:24px}
.preview-section.active{display:block}
.preview-img-wrap{background:var(--bg-soft);border-radius:12px;padding:16px;text-align:center;margin-bottom:18px;min-height:180px;display:flex;align-items:center;justify-content:center}
.preview-img-wrap img{max-width:100%;max-height:400px;border-radius:8px;box-shadow:var(--shadow)}
.controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin:18px 0}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text-muted);margin-bottom:6px}
.field input,.field select{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text);font-size:14.5px;font-family:inherit;transition:border-color .2s}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border:none;border-radius:10px;font-size:15px;font-weight:700;cursor:pointer;transition:all .2s;font-family:inherit;text-decoration:none}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);text-decoration:none;color:#fff}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}
.btn-secondary{background:var(--bg-soft);color:var(--text);border:1px solid var(--border)}
.btn-secondary:hover{background:var(--border);text-decoration:none;color:var(--text)}
.btn-success{background:var(--success);color:#fff}
.btn-success:hover{background:#059669;text-decoration:none;color:#fff}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.result-info{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;margin:18px 0;padding:16px;background:var(--bg-soft);border-radius:10px}
.result-info div{text-align:center}
.result-info .lbl{font-size:12px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;font-weight:600;margin-bottom:3px}
.result-info .val{font-size:16px;font-weight:800;color:var(--text)}
.result-info .val.good{color:var(--success)}
.compare-slider{position:relative;width:100%;max-width:600px;margin:20px auto;aspect-ratio:16/10;border-radius:12px;overflow:hidden;background:var(--bg-soft);box-shadow:var(--shadow);user-select:none;touch-action:none}
.compare-slider .before,.compare-slider .after{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.compare-slider .before img,.compare-slider .after img{max-width:100%;max-height:100%;object-fit:contain}
.compare-slider .after{clip-path:inset(0 50% 0 0)}
.compare-slider .handle{position:absolute;top:0;bottom:0;left:50%;width:3px;background:#fff;box-shadow:0 0 8px rgba(0,0,0,.3);cursor:ew-resize;z-index:3}
.compare-slider .handle::after{content:'◄ ►';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:var(--accent);color:#fff;width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;box-shadow:0 2px 10px rgba(0,0,0,.3)}
.compare-slider .label{position:absolute;top:10px;background:rgba(0,0,0,.6);color:#fff;padding:4px 10px;border-radius:6px;font-size:12px;font-weight:600;z-index:2}
.compare-slider .before .label{left:10px}
.compare-slider .after .label{right:10px}
.howto{background:var(--card-bg);border:1px solid var(--border);border-radius:14px;padding:26px 28px;margin-top:30px}
.howto h2{font-size:20px;font-weight:800;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.howto h2::before{content:'';width:4px;height:20px;background:var(--accent);border-radius:4px}
.howto ol,.howto ul{padding-left:22px;margin-bottom:16px}
.howto li{margin-bottom:8px;color:var(--text);font-size:15px}
.howto p{color:var(--text-muted);margin-bottom:14px;font-size:15px}
.howto h3{font-size:16px;font-weight:700;margin:18px 0 8px;color:var(--text)}
.faq-item{border-bottom:1px solid var(--border);padding:14px 0}
.faq-item:last-child{border-bottom:none}
.faq-item h4{font-size:15px;font-weight:700;margin-bottom:6px;cursor:pointer}
.faq-item p{font-size:14px;color:var(--text-muted)}
.cross-links{margin-top:44px;padding:24px;background:var(--card-bg);border:1px solid var(--border);border-radius:14px;text-align:center}
.cross-links h3{font-size:14px;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);margin-bottom:14px}
.cross-links .links{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.cross-links a{background:var(--bg-soft);border:1px solid var(--border);padding:8px 14px;border-radius:8px;font-size:13.5px;font-weight:600;color:var(--text);transition:all .2s}
.cross-links a:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
.site-footer{background:var(--card-bg);border-top:1px solid var(--border);margin-top:auto;padding:36px 20px 24px}
.footer-inner{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:28px}
.footer-col h4{font-size:13px;font-weight:800;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);margin-bottom:12px}
.footer-col a{display:block;color:var(--text-muted);font-size:14px;padding:4px 0;transition:color .2s}
.footer-col a:hover{color:var(--accent);text-decoration:none}
.footer-ecosystem{max-width:1100px;margin:30px auto 0;padding:22px;background:var(--bg-soft);border-radius:14px}
.footer-ecosystem h3{font-size:14px;font-weight:800;text-align:center;margin-bottom:4px}
.footer-ecosystem p{font-size:12.5px;color:var(--text-muted);text-align:center;margin-bottom:16px}
.eco-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:10px}
.eco-item{display:flex;align-items:center;gap:10px;background:var(--card-bg);border:1px solid var(--border);padding:10px 14px;border-radius:10px;transition:all .2s;text-decoration:none;color:var(--text)}
.eco-item:hover{border-color:var(--accent);transform:translateY(-2px);text-decoration:none}
.eco-item .eco-icon{font-size:18px}
.eco-item .eco-body{min-width:0}
.eco-item .eco-name{font-size:13.5px;font-weight:700;color:var(--text)}
.eco-item .eco-url{font-size:11px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.footer-bottom{max-width:1100px;margin:26px auto 0;padding-top:20px;border-top:1px solid var(--border);text-align:center;font-size:13px;color:var(--text-muted)}
.footer-bottom strong{color:var(--text)}
#offline-wall{display:none;position:fixed;inset:0;background:rgba(15,23,42,.96);color:#fff;z-index:9999999;align-items:center;justify-content:center;padding:24px;text-align:center}
#offline-wall.active{display:flex}
#offline-wall .ow-card{max-width:400px;background:#1e293b;padding:34px 28px;border-radius:16px;box-shadow:0 25px 70px rgba(0,0,0,.6)}
#offline-wall .ow-icon{font-size:56px;margin-bottom:14px}
#offline-wall h2{font-size:22px;margin-bottom:10px}
#offline-wall p{color:#94a3b8;font-size:14.5px;margin-bottom:20px}
@media (max-width:640px){.header-nav a{display:none}.header-nav a.keep{display:inline-flex}.wrap{padding:20px 14px 50px}.editor{padding:20px 16px}.drop-zone{padding:32px 16px}.howto{padding:20px 18px}.tool-grid{grid-template-columns:1fr}.controls{grid-template-columns:1fr 1fr}}
@media print{.site-header,.site-footer,.cross-links,.smartimage-ad,#offline-wall{display:none!important}}