:root {
            --bg:#f5f4f1; --surface:#fff; --surface-2:#f9f8f6; --border:rgba(0,0,0,.07); --border-strong:rgba(0,0,0,.12);
            --text-1:#1a1917; --text-2:#6b6a67; --text-3:#a09f9c; --accent:#1a1917; --accent-fg:#fff;
            --green:#2d6a4f; --green-bg:#d8f3dc; --red:#9b2226; --red-bg:#fde2e4; --radius:12px; --radius-lg:16px; --radius-xl:20px;
            --shadow:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04); --font:'DM Sans','PingFang SC','Microsoft YaHei',sans-serif; --mono:'DM Mono','Courier New',monospace;
        }
        *{box-sizing:border-box;margin:0;padding:0} body{font-family:var(--font);background:var(--bg);color:var(--text-1);min-height:100vh;padding:32px 18px 64px;line-height:1.5;-webkit-font-smoothing:antialiased}.wrap{max-width:1180px;margin:0 auto}.site-header{display:flex;align-items:center;gap:14px;margin-bottom:24px}.logo-mark{width:42px;height:42px;background:var(--text-1);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;flex-shrink:0}.site-header h1{font-size:20px;font-weight:500;letter-spacing:-.3px;margin-bottom:1px}.site-header p{font-size:13px;color:var(--text-2)}.breadcrumb{display:flex;gap:8px;align-items:center;margin-bottom:20px;font-size:13px;color:var(--text-2)}.breadcrumb a{color:var(--text-1);text-decoration:none}.layout{display:grid;grid-template-columns:320px 1fr;gap:18px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow);overflow:hidden}.card-head{padding:18px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:12px}.card-title{font-size:15px;font-weight:500;display:flex;align-items:center;gap:8px}.badge{font-size:12px;color:var(--text-2);background:var(--surface-2);border:1px solid var(--border);padding:4px 8px;border-radius:999px}.file-list,.media-list{max-height:720px;overflow:auto}.file-item,.media-item{display:flex;align-items:center;gap:12px;padding:13px 16px;border-bottom:1px solid var(--border);text-decoration:none;color:inherit;transition:.15s ease;cursor:pointer}.file-item:hover,.media-item:hover{background:var(--surface-2)}.file-item.active,.media-item.active{background:#eef2ff}.item-icon{width:34px;height:34px;border-radius:10px;background:var(--surface-2);display:flex;align-items:center;justify-content:center;flex-shrink:0}.item-info{min-width:0;flex:1}.item-name{font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.item-meta{font-size:12px;color:var(--text-2);margin-top:2px}.player-card{padding:20px}.player-wrap{background:#000;border-radius:var(--radius-lg);overflow:hidden;min-height:420px;display:flex;align-items:center;justify-content:center}.player-wrap video,.player-wrap img{width:100%;max-height:70vh;display:block;background:#000}.empty{padding:50px 20px;text-align:center;color:var(--text-2)}.empty i{font-size:38px;color:var(--text-3);margin-bottom:12px}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;flex-wrap:wrap}.btn{height:38px;padding:0 14px;border:1px solid var(--border-strong);background:var(--surface);border-radius:10px;color:var(--text-1);font-size:13px;display:inline-flex;align-items:center;gap:7px;text-decoration:none;cursor:pointer;font-family:inherit}.btn:hover{background:var(--surface-2)}.btn-primary{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}.btn-primary:hover{background:#333}.current-url{font-family:var(--mono);font-size:12px;color:var(--text-2);word-break:break-all;background:var(--surface-2);border:1px solid var(--border);border-radius:12px;padding:12px;margin-top:14px}.content-grid{display:grid;grid-template-columns:1fr 340px;gap:18px}.player-title{font-size:18px;font-weight:500;margin-bottom:14px;display:flex;align-items:center;justify-content:space-between;gap:12px}.player-title span:last-child{font-size:13px;color:var(--text-2);font-weight:400}@media(max-width:980px){.layout,.content-grid{grid-template-columns:1fr}.file-list,.media-list{max-height:360px}.player-wrap{min-height:260px}}    
        .switch-label{display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 12px;border:1px solid var(--border);border-radius:10px;background:var(--surface-2);font-size:13px;color:var(--text-1);cursor:pointer;user-select:none}.switch-label input{accent-color:var(--accent)}