:root{--brand: #2563eb;--brand-strong: #1d4ed8;--accent: #10b981;--bg: #f6f8fb;--surface: #ffffff;--text: #1e293b;--text-dim: #64748b;--border: #e2e8f0;--danger: #dc2626;--brand-tint: rgba(37, 99, 235, .06);--danger-border: rgba(220, 38, 38, .45);--danger-tint: rgba(220, 38, 38, .07);--accent-border: rgba(16, 185, 129, .5);--warn-bg: #fef3c7;--warn-text: #92400e;--shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 4px 16px rgba(15, 23, 42, .06);--radius: 14px}@media (prefers-color-scheme: dark){:root{--brand: #3b82f6;--brand-strong: #60a5fa;--accent: #34d399;--bg: #0f172a;--surface: #1e293b;--text: #e2e8f0;--text-dim: #94a3b8;--border: #334155;--danger: #f87171;--brand-tint: rgba(96, 165, 250, .1);--danger-border: rgba(248, 113, 113, .5);--danger-tint: rgba(248, 113, 113, .12);--accent-border: rgba(52, 211, 153, .5);--warn-bg: #452a03;--warn-text: #fcd34d;--shadow: 0 1px 3px rgba(0, 0, 0, .4), 0 4px 16px rgba(0, 0, 0, .3)}}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans CJK SC,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;display:flex;flex-direction:column;min-height:100vh}main{flex:1}.container{max-width:960px;margin:0 auto;padding:0 16px}a{color:var(--brand);text-decoration:none}button{font-family:inherit}#site-header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}.header-inner{display:flex;align-items:center;justify-content:space-between;height:56px}.brand{display:flex;align-items:center;gap:8px;color:var(--text);font-weight:700;font-size:17px}.brand-icon{width:28px;height:28px}.header-nav{display:flex;align-items:center;gap:16px}.header-nav a{color:var(--text-dim);font-size:14px}.header-nav a:hover{color:var(--brand)}.lang-select{border:1px solid var(--border);background:var(--surface);color:var(--text-dim);border-radius:999px;padding:4px 12px;font-size:13px;font-family:inherit;cursor:pointer;max-width:110px}.lang-select:hover,.lang-select:focus{border-color:var(--brand);color:var(--brand)}.hero{text-align:center;padding:48px 16px 8px}.hero h1{font-size:clamp(30px,6vw,44px);margin:0 0 12px;background:linear-gradient(120deg,var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}.hero .hero-sub{color:var(--text-dim);font-size:clamp(15px,2.5vw,18px);max-width:560px;margin:0 auto}.promises{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;padding:24px 16px;list-style:none;margin:0}.promises li{display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--border);border-radius:999px;padding:8px 18px;font-size:14px;font-weight:600;box-shadow:var(--shadow)}.promises .promise-icon{width:18px;height:18px;color:var(--accent);flex:none}.tools-section{padding:8px 0 32px}.tools-section h2{text-align:center;font-size:20px;color:var(--text-dim);font-weight:600;margin:16px 0 20px}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}.tool-card{display:flex;gap:14px;align-items:flex-start;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);color:var(--text);transition:transform .15s ease,border-color .15s ease;position:relative}a.tool-card:hover{transform:translateY(-2px);border-color:var(--brand)}.tool-card.is-disabled .tool-icon{opacity:.5}.tool-card.is-disabled h3{color:var(--text-dim)}.tool-icon{width:42px;height:42px;flex:none;border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff}.tool-icon svg{width:24px;height:24px}.tool-card h3{margin:0 0 4px;font-size:16px}.tool-card p{margin:0;font-size:13px;color:var(--text-dim)}.badge-soon{position:absolute;top:10px;right:10px;font-size:11px;background:var(--bg);border:1px solid var(--border);color:var(--text-dim);border-radius:999px;padding:2px 8px}[dir=rtl] .badge-soon{right:auto;left:10px}.why-section{padding:8px 0 48px}.why-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}.why-card h2{margin:0 0 8px;font-size:18px}.why-card p{margin:0;color:var(--text-dim);font-size:14px}.tool-page{padding-top:32px;padding-bottom:48px}.tool-head{text-align:center;margin-bottom:24px}.tool-head h1{font-size:clamp(24px,5vw,32px);margin:0 0 8px}.tool-head .tool-sub{color:var(--text-dim);font-size:14px;max-width:560px;margin:0 auto}.dropzone{border:2px dashed var(--border);border-radius:var(--radius);background:var(--surface);padding:44px 20px;text-align:center;cursor:pointer;transition:border-color .15s ease,background .15s ease}.dropzone:hover,.dropzone.is-dragover{border-color:var(--brand);background-image:linear-gradient(var(--brand-tint),var(--brand-tint))}.dropzone.is-loading{pointer-events:none;opacity:.6;cursor:progress}.dropzone .drop-icon{width:46px;height:46px;color:var(--brand);margin-bottom:10px}.dropzone .drop-main{font-size:16px;font-weight:600;margin:0 0 6px}.dropzone .drop-hint{font-size:13px;color:var(--text-dim);margin:0}.file-list{list-style:none;margin:18px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}.file-item{display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:10px 12px;box-shadow:var(--shadow);touch-action:pan-y;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}.file-item.is-dragging{position:relative;z-index:10;border-color:var(--brand);box-shadow:0 8px 24px #0f172a2e}.file-item.is-shifting{transition:transform .15s ease}.file-item.has-error{border-color:var(--danger-border)}.drag-handle{flex:none;width:34px;height:34px;display:flex;align-items:center;justify-content:center;color:var(--text-dim);cursor:grab;border:none;background:transparent;border-radius:8px;touch-action:none}.drag-handle:active{cursor:grabbing}.file-index{flex:none;width:22px;height:22px;border-radius:50%;background:var(--bg);border:1px solid var(--border);color:var(--text-dim);font-size:12px;display:flex;align-items:center;justify-content:center}.file-meta{flex:1;min-width:0}.file-name{font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-detail{font-size:12px;color:var(--text-dim)}.file-detail .file-error{color:var(--danger)}.file-actions{flex:none;display:flex;gap:2px}.icon-btn{width:34px;height:34px;border:none;background:transparent;border-radius:8px;color:var(--text-dim);cursor:pointer;display:flex;align-items:center;justify-content:center}.icon-btn:hover{background:var(--bg);color:var(--text)}.icon-btn:disabled{opacity:.35;cursor:default}.icon-btn.danger:hover{color:var(--danger)}.icon-btn svg{width:18px;height:18px}.list-actions{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}.btn{border:none;border-radius:12px;padding:12px 22px;font-size:15px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:background .15s ease,opacity .15s ease}.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand-strong)}.btn-primary:disabled{opacity:.45;cursor:default}.btn-secondary{background:transparent;border:1px solid var(--border);color:var(--text-dim)}.btn-secondary:hover{border-color:var(--brand);color:var(--brand)}.btn-block{width:100%;margin-top:18px;padding:14px 22px;font-size:16px}.action-hint{text-align:center;font-size:13px;color:var(--text-dim);margin:10px 0 0}.progress-wrap{margin-top:18px}.progress-track{height:10px;border-radius:999px;background:var(--border);overflow:hidden}.progress-bar{height:100%;width:0%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--accent));transition:width .2s ease}.progress-label{text-align:center;font-size:13px;color:var(--text-dim);margin-top:8px}.result-card{margin-top:18px;background:var(--surface);border:1px solid var(--accent-border);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px 20px;text-align:center}.result-icon{width:44px;height:44px;color:var(--accent);margin-bottom:8px}.result-card h2{margin:0 0 6px;font-size:20px}.result-card p{margin:0 0 16px;font-size:14px;color:var(--text-dim)}.result-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.alert-error{margin-top:14px;background:var(--danger-tint);border:1px solid var(--danger-border);color:var(--danger);border-radius:12px;padding:12px 16px;font-size:14px}#site-footer{background:var(--surface);border-top:1px solid var(--border);margin-top:40px}.footer-inner{padding:26px 16px;text-align:center}.footer-privacy{font-size:13px;color:var(--text-dim);margin:0 0 14px}.footer-links{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px 18px;font-size:13px;margin-bottom:14px}.footer-group-label{color:var(--text);font-weight:600}.footer-link{color:var(--text-dim)}.footer-link:hover{color:var(--brand)}.footer-link.is-placeholder{cursor:default}.inapp-banner{background:var(--warn-bg);color:var(--warn-text);font-size:13px;line-height:1.5;padding:10px 16px;text-align:center}.footer-copyright{font-size:12px;color:var(--text-dim);margin:0}@media (max-width: 640px){.hero{padding-top:32px}.tool-grid{grid-template-columns:1fr}.dropzone{padding:32px 16px}.file-item{padding:8px;gap:6px}.file-index{display:none}.icon-btn,.drag-handle{width:40px;height:40px}}.file-card{display:flex;align-items:center;gap:12px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow)}.file-card .file-meta{flex:1;min-width:0}.tabbar{display:flex;gap:8px;justify-content:center;margin-bottom:20px}.tab-btn{border:1px solid var(--border);background:var(--surface);color:var(--text-dim);border-radius:999px;padding:8px 20px;font-size:14px;font-weight:600;cursor:pointer}.tab-btn.is-active{background:var(--brand);border-color:var(--brand);color:#fff}.opt-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;margin-top:16px;display:flex;flex-direction:column;gap:14px}.opt-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.opt-label{font-size:14px;font-weight:600;min-width:72px}.pill-group{display:flex;gap:8px;flex-wrap:wrap}.pill{border:1px solid var(--border);background:transparent;color:var(--text-dim);border-radius:999px;padding:6px 14px;font-size:13px;cursor:pointer}.pill.is-active{background:var(--brand);border-color:var(--brand);color:#fff}.opt-row input[type=range]{flex:1;min-width:120px;accent-color:var(--brand)}.opt-row input[type=text]{flex:1;min-width:160px;border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:10px;padding:9px 12px;font-size:14px;font-family:inherit}.opt-row input[type=text]:focus{outline:2px solid var(--brand);outline-offset:0;border-color:var(--brand)}.opt-value{font-size:13px;color:var(--text-dim);min-width:40px;text-align:right}.opt-note{font-size:12.5px;color:var(--text-dim);margin:0}.thumb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px;margin-top:16px}.thumb-cell{position:relative;background:var(--surface);border:2px solid var(--border);border-radius:10px;padding:8px 8px 4px;text-align:center;cursor:pointer;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}.thumb-cell .thumb-frame{height:120px;display:flex;align-items:center;justify-content:center;overflow:hidden}.thumb-cell canvas,.thumb-cell img{max-width:100%;max-height:120px;box-shadow:0 1px 4px #0f172a2e;transition:transform .15s ease}.thumb-cell .thumb-num{font-size:12px;color:var(--text-dim);margin-top:4px;display:block}.thumb-cell.is-selected{border-color:var(--brand);background-image:linear-gradient(var(--brand-tint),var(--brand-tint))}.thumb-cell .check-mark{position:absolute;top:6px;inset-inline-end:6px;width:22px;height:22px;border-radius:50%;background:var(--brand);color:#fff;display:none;align-items:center;justify-content:center}.thumb-cell.is-selected .check-mark{display:flex}.thumb-cell .check-mark svg{width:13px;height:13px}.thumb-cell.is-deleted canvas{opacity:.25;filter:grayscale(1)}.thumb-cell.is-deleted{border-style:dashed}.cell-actions{display:flex;justify-content:center;gap:2px}.cell-actions .icon-btn{width:30px;height:30px}.thumb-cell .drag-handle{position:absolute;top:2px;inset-inline-start:2px;width:30px;height:30px}.thumb-cell.is-drag-ghost{opacity:.95;box-shadow:0 12px 32px #0f172a4d;z-index:30}.thumb-placeholder{border:2px dashed var(--brand);border-radius:10px;background:transparent}.preview-box{margin-top:16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px;text-align:center}.preview-box h2{font-size:14px;color:var(--text-dim);margin:0 0 10px;font-weight:600}.preview-box canvas{max-width:100%;max-height:420px;box-shadow:0 1px 6px #0f172a33}.file-item .img-thumb{width:40px;height:40px;object-fit:cover;border-radius:8px;border:1px solid var(--border);flex:none}.size-compare{font-size:15px;font-weight:600;margin:4px 0 0}.size-compare .size-arrow{color:var(--accent);margin:0 6px}@media (max-width: 640px){.thumb-grid{grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:8px}.thumb-cell .thumb-frame{height:96px}.thumb-cell canvas,.thumb-cell img{max-height:96px}.opt-label{min-width:100%}.opt-row.slider-row .opt-label{min-width:auto;font-size:13px;font-weight:500}.cell-actions .icon-btn,.thumb-cell .drag-handle{width:40px;height:40px}.file-card{flex-wrap:wrap}.file-card .file-meta{flex:1 0 100%}.file-card .btn{flex:1;padding:10px 12px;font-size:14px}}.hidden{display:none!important}