:root{--bg: #f4f6fb;--bg-grad: linear-gradient(160deg, #f0f2f7 0%, #f4f6fb 40%, #f1f3f8 100%);--card-bg: rgba(255,255,255,.92);--card-border: rgba(0,0,0,.06);--text: #1f2430;--text-2: #6b7280;--accent: #6366f1;--accent-soft: rgba(99,102,241,.12);--shadow: 0 6px 24px rgba(31,41,55,.08);--input-bg: rgba(255,255,255,.9);--brand-solid: #55627a}[data-theme=dark]{--bg: #0d1117;--bg-grad: linear-gradient(160deg, #11141a 0%, #0d1117 45%, #0f1319 100%);--card-bg: rgba(24,29,40,.88);--card-border: rgba(255,255,255,.08);--text: #e6e9f0;--text-2: #9aa3b2;--accent: #818cf8;--accent-soft: rgba(129,140,248,.16);--shadow: 0 6px 24px rgba(0,0,0,.45);--input-bg: rgba(24,29,40,.9);--brand-solid: #394152}*{margin:0;padding:0;box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{font-family:PingFang SC,Microsoft YaHei,Segoe UI,system-ui,sans-serif;background:var(--bg-grad) fixed;color:var(--text);min-height:100vh;transition:background .3s,color .3s}.wrap{max-width:860px;margin:0 auto;padding:12px 20px 60px}header{display:flex;align-items:center;justify-content:space-between;padding:18px 24px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text)}.brand .logo{width:40px;height:40px;border-radius:12px;background:var(--brand-solid);color:#fff;font-size:20px;font-weight:700;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow)}.brand h1{font-size:20px;letter-spacing:1px}.actions{display:flex;gap:10px}.icon-btn{width:40px;height:40px;border-radius:12px;border:1px solid var(--card-border);background:var(--card-bg);color:var(--text);font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform .15s,box-shadow .15s;text-decoration:none}.icon-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.page-head{text-align:center;margin:20px 0 24px}.page-head .big{font-size:26px;font-weight:700}.page-head .sub{color:var(--text-2);font-size:13px;margin-top:6px}.search-box{max-width:560px;margin:0 auto 22px;position:relative}.search-box input{width:100%;padding:12px 44px 12px 18px;border-radius:14px;border:1px solid var(--card-border);background:var(--input-bg);color:var(--text);font-size:14px;outline:none;box-shadow:var(--shadow);transition:border-color .2s}.search-box input:focus{border-color:var(--accent)}.search-box .s-icon{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:var(--text-2);font-size:16px;pointer-events:none}.file-card{display:flex;align-items:center;gap:14px;background:var(--card-bg);border:1px solid var(--card-border);border-radius:14px;padding:16px 18px;margin-bottom:12px;box-shadow:0 2px 10px #0000000a;flex-wrap:wrap;transition:transform .15s,box-shadow .15s}.file-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.file-card .f-icon{width:46px;height:46px;border-radius:12px;flex-shrink:0;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:22px}.file-card .f-main{flex:1;min-width:180px}.file-card .f-name{font-weight:600;font-size:15px;word-break:break-all}.file-card .f-meta,.file-card .f-desc{font-size:12px;color:var(--text-2);margin-top:4px}.file-card .dl-btn{padding:9px 20px;border-radius:10px;border:none;background:var(--accent);color:#fff;font-size:13px;cursor:pointer;text-decoration:none;flex-shrink:0;transition:opacity .15s}.file-card .dl-btn:hover{opacity:.9}.file-card.folder{cursor:pointer}#breadcrumb{display:flex;flex-wrap:wrap;gap:4px;align-items:center;font-size:13px;color:var(--text-2);margin-bottom:14px}#breadcrumb a{color:var(--accent);text-decoration:none;cursor:pointer}#breadcrumb a:hover{text-decoration:underline}#breadcrumb .sep{opacity:.55}.empty{text-align:center;padding:70px 20px;color:var(--text-2)}.empty .big{font-size:46px;margin-bottom:12px}.toast{position:fixed;left:50%;bottom:40px;transform:translate(-50%);background:#141821eb;color:#fff;padding:10px 20px;border-radius:12px;font-size:14px;opacity:0;pointer-events:none;transition:opacity .25s;z-index:99}.toast.show{opacity:1}footer{text-align:center;color:var(--text-2);font-size:12px;padding:40px 0 10px}@media (max-width: 560px){header{padding:14px 16px}.brand h1{font-size:17px}.wrap{padding:8px 14px 40px}.file-card{padding:13px 14px}}