:root{--primary: #4f46e5;--primary-dark: #4338ca;--primary-soft: #eef2ff;--bg: #f6f7fb;--card: #ffffff;--text: #0f172a;--muted: #64748b;--border: #e2e8f0;--success: #16a34a;--danger: #dc2626;--warn: #d97706;--radius: 14px;--shadow: 0 1px 3px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .06)}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft YaHei,PingFang SC,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}#app{display:flex;flex-direction:column;min-height:100vh}.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:12px 28px;background:#ffffffd9;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--text);font-size:18px;font-weight:700}.brand-logo{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:9px;background:var(--primary);color:#fff;font-size:12px;font-weight:800;letter-spacing:.5px}.badge{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--muted)}.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 0 3px #16a34a26}.view{flex:1;width:100%;max-width:1080px;margin:0 auto;padding:32px 24px 64px}.hero{text-align:center;padding:26px 0 34px}.hero h1{margin:0 0 10px;font-size:34px;letter-spacing:-.5px}.hero p{margin:0;color:var(--muted);font-size:16px}.tools-section{margin-bottom:34px}.section-title{margin:0 0 14px;font-size:17px;font-weight:700;padding-left:10px;border-left:4px solid var(--primary)}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:14px}.tool-card{display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding:18px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);cursor:pointer;text-align:left;font-family:inherit;color:var(--text);transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease}.tool-card:hover{transform:translateY(-3px);border-color:var(--primary);box-shadow:0 4px 8px #0f172a14,0 14px 30px #4f46e524}.tool-icon{width:46px;height:46px;display:inline-flex;align-items:center;justify-content:center}.tool-icon svg{width:46px;height:46px}.tool-card h3{margin:0;font-size:16px}.tool-card p{margin:0;font-size:13px;color:var(--muted);line-height:1.5}.tool-page{max-width:820px;margin:0 auto}.back-btn{display:block;margin:0 auto 14px;border:1px solid var(--border);background:var(--card);color:var(--text);font-size:18px;font-weight:600;cursor:pointer;padding:10px 28px;border-radius:99px;font-family:inherit;transition:color .15s ease,background .15s ease,border-color .15s ease}.back-btn:hover{color:var(--primary);background:var(--primary-soft);border-color:var(--primary)}.tool-head{display:flex;align-items:center;gap:16px;margin-bottom:22px}.tool-head-icon{flex-shrink:0}.tool-head-icon svg{width:52px;height:52px}.tool-head h1{margin:0;font-size:24px}.tool-head p{margin:4px 0 0;color:var(--muted);font-size:14px}.tool-body{display:flex;flex-direction:column;gap:16px}.dropzone{display:flex;flex-direction:column;align-items:center;gap:8px;padding:46px 24px;border:2px dashed #c7d2fe;border-radius:var(--radius);background:#fbfcff;cursor:pointer;transition:border-color .15s ease,background .15s ease}.dropzone:hover,.dropzone.dragging{border-color:var(--primary);background:var(--primary-soft)}.dz-icon{color:var(--primary);opacity:.85}.dz-icon svg{width:42px;height:42px}.dz-text{font-size:15px;color:var(--text)}.dz-hint{font-size:12px;color:var(--muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 22px;border:1px solid transparent;border-radius:10px;font-size:14px;font-weight:600;font-family:inherit;cursor:pointer;transition:background .15s ease,opacity .15s ease}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-primary:disabled{opacity:.55;cursor:not-allowed}.btn-sm{padding:7px 16px;font-size:13px}.input{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:9px;font-size:14px;font-family:inherit;color:var(--text);background:#fff;outline:none;transition:border-color .15s ease,box-shadow .15s ease}.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #4f46e51f}select.input{cursor:pointer}.opt-row{display:flex;align-items:flex-start;gap:14px;padding:11px 0;border-bottom:1px dashed var(--border)}.opt-row:last-child{border-bottom:none}.opt-label{flex:0 0 110px;font-size:14px;font-weight:600;padding-top:8px}.opt-control{flex:1;display:flex;flex-direction:column;gap:6px}.opt-hint{font-size:12px;color:var(--muted)}.check-label{display:inline-flex;align-items:center;gap:7px;font-size:14px;cursor:pointer;padding:4px 0}.checkbox{width:16px;height:16px;accent-color:var(--primary);cursor:pointer}.check-group{display:flex;flex-wrap:wrap;gap:4px 18px}.file-list-wrap{display:flex;flex-direction:column;gap:8px}.file-item{display:flex;align-items:center;gap:10px;padding:9px 12px;background:var(--card);border:1px solid var(--border);border-radius:10px}.file-name{flex:1;font-size:13.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-size{font-size:12px;color:var(--muted);flex-shrink:0}.file-ops{display:flex;gap:4px;flex-shrink:0}.icon-btn{width:26px;height:26px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);background:#fff;border-radius:7px;font-size:12px;cursor:pointer;color:var(--muted)}.icon-btn:hover{color:var(--primary);border-color:var(--primary)}.icon-btn.danger:hover{color:var(--danger);border-color:var(--danger)}.progress-wrap{display:flex;flex-direction:column;gap:5px}.progress{height:7px;background:var(--primary-soft);border-radius:99px;overflow:hidden}.progress-fill{width:0%;height:100%;background:linear-gradient(90deg,var(--primary),#7c6cf6);border-radius:99px;transition:width .25s ease}.progress-label{font-size:12px;color:var(--muted);text-align:center}.result-box{display:flex;align-items:center;gap:16px;padding:18px 20px;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:var(--radius)}.result-icon{flex-shrink:0;width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;background:var(--success);color:#fff;border-radius:50%}.result-icon svg{width:22px;height:22px}.result-info{flex:1;display:flex;flex-direction:column;align-items:flex-start;gap:4px}.result-title{font-size:15px;font-weight:700}.result-note{font-size:13px;color:var(--muted)}.toast-root{position:fixed;top:18px;left:50%;transform:translate(-50%);z-index:999;display:flex;flex-direction:column;gap:8px}.toast{padding:11px 20px;border-radius:10px;background:#1e293b;color:#fff;font-size:14px;box-shadow:0 10px 30px #00000040;animation:toast-in .25s ease;transition:opacity .3s ease}.toast-warn{background:#b45309}.toast-err{background:var(--danger)}.toast.out{opacity:0}@keyframes toast-in{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.thumb-tools{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.thumb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(118px,1fr));gap:12px}.thumb-item{position:relative;border:2px solid var(--border);border-radius:10px;overflow:hidden;background:#fff;cursor:pointer;transition:border-color .15s ease}.thumb-item:hover{border-color:#a5b4fc}.thumb-item.marked{border-color:var(--danger)}.thumb-item canvas{display:block;width:100%;height:auto}.thumb-check{position:absolute;top:6px;left:6px;width:20px;height:20px;accent-color:var(--danger);cursor:pointer}.thumb-num{position:absolute;right:5px;bottom:5px;padding:1px 7px;font-size:11px;color:#fff;background:#0f172aa6;border-radius:99px}.thumb-item .thumb-check:not(:checked)+.thumb-num{background:#0f172aa6}.thumb-item.marked .thumb-num{background:var(--danger)}.thumb-check.sel{accent-color:var(--primary)}.thumb-item.sel{border-color:var(--primary);box-shadow:0 0 0 2px #4f46e529}.thumb-item.sel .thumb-num{background:var(--primary)}.btn-mini{padding:5px 12px;font-size:12px;border-radius:8px}.btn-ghost{background:#fff;border:1px solid var(--border);color:var(--text)}.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}.wm-box{display:flex;flex-direction:column;gap:6px;padding:6px 16px 12px;border:1px dashed #c7d2fe;border-radius:12px;background:#fbfcff}.wm-title{font-size:13px;font-weight:700;color:var(--primary)}.wm-fields{display:flex;flex-direction:column}.wm-inline{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);flex-wrap:wrap}.wm-inline .input{width:84px}.ctrl-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:4px 0 2px}.ctrl-inline{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.ctrl-inline select{width:auto}.ctrl-label{font-size:13px;color:var(--muted)}.footer{text-align:center;padding:20px;font-size:13px;color:var(--muted);border-top:1px solid var(--border);background:#fff}@media (max-width: 640px){.view{padding:20px 14px 48px}.hero h1{font-size:26px}.badge{display:none}.tools-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.tool-card{padding:14px}.opt-row{flex-direction:column;gap:6px}.opt-label{flex:none;padding-top:0}.thumb-grid{grid-template-columns:repeat(auto-fill,minmax(100px,1fr))}}