*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none}
:root{
  --primary:#5B8DEF;--primary-light:#eef2fb;--bg:#f8f9fa;--card:#ffffff;--text:#2d3748;--muted:#8899aa;
  --border:#d0d4da;--shadow-sm:0 1px 4px rgba(0,0,0,.04);--radius-sm:10px;--radius-md:14px;--radius-lg:18px;
  --sidebar-bg:#f5f5f5;--item-border:#e8e8e8;--item-bg:#ececec;--input-bg:#f0f0f0;
}
[data-theme="dark"]{
  --primary:#6B9EFF;--primary-light:#243558;--bg:#1a1b26;--card:#232433;--text:#c8cad0;--muted:#7a7d8a;
  --border:#2f3047;--shadow-sm:0 1px 4px rgba(0,0,0,.2);--sidebar-bg:#252635;--item-border:#404055;--item-bg:#353545;--input-bg:#2a2b3a;
}
html,body{height:100%;overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--text);font-size:16px;-webkit-font-smoothing:antialiased;transition:background .3s,color .3s}
input,textarea,[contenteditable]{-webkit-user-select:auto!important;user-select:auto!important}
img{-webkit-touch-callout:none!important;-webkit-user-select:none!important;pointer-events:auto}
#viewport{width:100%;height:100%;overflow:hidden;position:relative}
#pages{display:flex;width:300%;height:100%;transition:transform .35s cubic-bezier(.32,.72,0,1)}
.page{width:33.333%;height:100%;overflow-y:auto;overflow-x:hidden;position:relative;-webkit-overflow-scrolling:touch;padding-bottom:calc(64px + env(safe-area-inset-bottom))}

/* Topbar */
.topbar{position:sticky;top:0;z-index:50;padding:12px 16px;background:var(--bg);border-bottom:1px solid var(--item-border);transition:background .3s}
.search-row{display:flex;align-items:center;gap:10px;justify-content:center;position:relative}
.search-box{flex:1;max-width:600px;background:var(--card);border-radius:12px;padding:8px 12px;display:flex;align-items:center;gap:10px;transition:all .2s;border:1px solid var(--border)}
.search-box .avatar{margin-left:auto;width:32px;height:32px;border:2px solid var(--border);flex-shrink:0}
.search-box:focus-within{box-shadow:0 0 0 3px rgba(91,141,239,.08)}
.search-box input{flex:1;border:none;background:transparent;font-size:16px;outline:none;color:var(--text);font-weight:500}
.search-box input::placeholder{color:#a0aab5;font-weight:400}
.search-box svg{width:18px;height:18px;color:#a0aab5;flex-shrink:0}
.action-btn{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;color:var(--muted);background:var(--input-bg);transition:all .15s}
.action-btn:active{transform:scale(.92);background:var(--border)}
.action-btn svg{width:20px;height:20px}
.avatar{width:32px;height:32px;border-radius:50%;overflow:hidden;cursor:pointer;flex-shrink:0;border:2px solid var(--bg);background:var(--input-bg);position:relative;display:flex;align-items:center;justify-content:center;z-index:10}
.avatar img{width:100%;height:100%;object-fit:cover;display:block;pointer-events:none}
.login-dot{position:absolute;bottom:-3px;right:-3px;width:10px;height:10px;border-radius:50%;background:#10b981;border:2px solid var(--bg);display:none;z-index:2}
.login-dot.show{display:block}
[data-theme="dark"] .search-box{background:var(--input-bg)}
[data-theme="dark"] .action-btn{background:var(--input-bg);color:var(--muted)}

/* Search Suggestions */
.search-suggestions{position:absolute;top:100%;left:16px;right:16px;margin-top:4px;background:var(--card);border-radius:12px;box-shadow:0 4px 20px rgba(0,0,0,.12);z-index:60;max-height:360px;overflow-y:auto;display:none;animation:sugFade .2s ease;border:1px solid var(--border)}
.search-suggestions.show{display:block}
@keyframes sugFade{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}
.sug-item{padding:12px 16px;display:flex;align-items:center;gap:12px;cursor:pointer;border-bottom:1px solid var(--item-border);transition:background .1s}
.sug-item:last-child{border-bottom:none}
.sug-item:active{background:var(--item-border)}
.sug-item .favicon{width:36px;height:36px;border-radius:10px;flex-shrink:0;background:var(--input-bg);display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
.sug-item .favicon img{width:100%;height:100%;object-fit:cover}
.sug-item .info{flex:1;min-width:0}
.sug-item .name{font-size:14px;font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sug-item .sub{font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-top:1px}
[data-theme="dark"] .sug-item .favicon{background:var(--input-bg)}

/* Category Accordion */
.cat-section{background:transparent;margin:0 12px 12px;border-radius:0;overflow:visible;box-shadow:none;border:none}
.cat-header{padding:12px 0;display:flex;align-items:center;justify-content:space-between;cursor:pointer;user-select:none}
.cat-header:active{background:transparent}
.cat-title{font-size:16px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:8px;letter-spacing:-.2px}
.cat-badge{font-size:12px;color:var(--primary);font-weight:600;margin-left:6px;background:var(--primary-light);padding:2px 8px;border-radius:10px}
.cat-arrow{width:20px;height:20px;color:var(--muted);opacity:.5;transition:transform .3s cubic-bezier(.4,0,.2,1);flex-shrink:0}
.cat-arrow.open{transform:rotate(180deg)}
.cat-body{display:none;padding:0 0 8px;overflow:hidden;max-height:0;transition:max-height .4s cubic-bezier(.4,0,.2,1),opacity .3s ease}
.cat-body.open{display:block;max-height:2000px;opacity:1}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* Site Items */
.site-item{background:linear-gradient(135deg,rgba(255,255,255,.65) 0%,rgba(255,255,255,.35) 100%);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-radius:15px;padding:14px 16px;margin:8px 0;display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit;transition:all .15s;border:1px solid rgba(255,255,255,.35);box-shadow:0 4px 16px rgba(0,0,0,.06),inset 0 1px 0 rgba(255,255,255,.45);cursor:pointer}
.site-item:active{transform:scale(.97);background:linear-gradient(135deg,rgba(255,255,255,.75) 0%,rgba(255,255,255,.45) 100%)}
[data-theme="dark"] .site-item{background:linear-gradient(135deg,rgba(53,54,69,.65) 0%,rgba(53,54,69,.35) 100%);border-color:rgba(255,255,255,.08);box-shadow:0 4px 16px rgba(0,0,0,.15),inset 0 1px 0 rgba(255,255,255,.06)}
[data-theme="dark"] .site-item:active{background:linear-gradient(135deg,rgba(53,54,69,.75) 0%,rgba(53,54,69,.45) 100%)}
.site-item .favicon{width:40px;height:40px;border-radius:10px;flex-shrink:0;background:var(--input-bg);display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
.site-item .favicon img{width:100%;height:100%;object-fit:cover;display:block}
.site-item .info{flex:1;min-width:0}
.site-item .name{font-size:14px;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text)}
.site-item .sub{font-size:12px;color:var(--muted);margin-top:3px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* Repo page sidebar layout */
.site-layout{display:flex;height:calc(100vh - 110px);position:relative;background:var(--bg);transition:background .3s}
.sidebar{width:90px;min-width:90px;background:var(--sidebar-bg);overflow-y:auto;padding:8px 0;border-right:1px solid var(--border);transition:background .3s}
.sidebar-item{padding:14px 8px;font-size:12px;font-weight:600;color:var(--muted);cursor:pointer;border-left:3px solid transparent;transition:all .15s;text-align:center;line-height:1.3}
.sidebar-item.active{color:var(--primary);background:linear-gradient(90deg,var(--primary-light) 0%,rgba(232,244,255,0.5) 60%,transparent 100%);border-left-color:var(--primary)}
.sidebar-item:active{background:var(--item-border)}
.sidebar-sub-wrap{display:none;background:var(--bg);transition:background .3s}
.sidebar-sub-wrap.show{display:block;animation:fadeIn .2s ease}
.sidebar-sub{padding:10px 8px 10px 20px;font-size:11px;color:var(--muted);cursor:pointer;transition:all .15s;position:relative}
.sidebar-sub.active{color:var(--primary);background:linear-gradient(90deg,var(--primary-light) 0%,rgba(232,244,255,0.4) 70%,transparent 100%);font-weight:700}
.sidebar-sub::before{content:"";position:absolute;left:12px;top:50%;transform:translateY(-50%);width:4px;height:4px;border-radius:50%;background:currentColor;opacity:.4}
.site-content{flex:1;overflow-y:auto;padding:16px 0 10px;background:var(--bg);transition:background .3s}

/* Repo/Fav Tabs */
.repo-tabs{display:flex;gap:8px;padding:8px 16px;background:var(--bg);border-bottom:1px solid var(--item-border);transition:background .3s}
.repo-tab{flex:1;text-align:center;padding:8px 0;font-size:13px;font-weight:600;color:var(--muted);border-radius:8px;cursor:pointer;transition:all .15s;position:relative;overflow:hidden;background:transparent}
.repo-tab::after{content:"";position:absolute;inset:0;background:var(--primary);opacity:0;transition:opacity .15s;border-radius:8px;z-index:-1}
.repo-tab:active::after{opacity:.15}
.repo-tab:active{color:var(--primary);transform:scale(.98)}
.repo-tab.active{color:var(--primary);font-weight:700;background:transparent}

/* FAB & Dark Mode Toggle */
.fab{position:fixed;bottom:calc(80px + env(safe-area-inset-bottom));right:16px;width:48px;height:48px;border-radius:8px;background:var(--primary);color:#fff;border:none;cursor:pointer;display:none;align-items:center;justify-content:center;z-index:50;font-size:24px;font-weight:300;box-shadow:0 4px 14px rgba(91,141,239,.35);transition:transform .2s}
.fab:active{transform:scale(.92)}
.fab.show{display:flex}
[data-theme="dark"] .fab{background:var(--input-bg);border:1px solid var(--border);color:var(--muted);box-shadow:0 4px 14px rgba(0,0,0,.3)}

.dark-mode-btn{position:fixed;bottom:calc(136px + env(safe-area-inset-bottom));right:16px;width:48px;height:48px;border-radius:8px;background:var(--card);color:var(--text);border:1px solid var(--border);cursor:pointer;display:flex;align-items:center;justify-content:center;z-index:50;font-size:20px;transition:all .2s;box-shadow:var(--shadow-sm)}
.dark-mode-btn:active{transform:scale(.92)}
.dark-mode-btn svg{width:22px;height:22px}
[data-theme="dark"] .dark-mode-btn{background:var(--card);border-color:var(--border)}

/* Dark Mode Ripple Animation */
.dark-mode-ripple{position:fixed;border-radius:50%;pointer-events:none;z-index:9999;transform:translate(-50%,-50%) scale(0);animation:rippleExpand .6s ease-out forwards}
@keyframes rippleExpand{to{transform:translate(-50%,-50%) scale(80);opacity:0}}

/* Bottom sheet */
.bottom-sheet-overlay{position:fixed;inset:0;background:rgba(0,0,0,.25);z-index:200;opacity:0;pointer-events:none;transition:opacity .3s;backdrop-filter:blur(2px)}
.bottom-sheet-overlay.show{opacity:1;pointer-events:auto}
.bottom-sheet{position:fixed;bottom:0;left:0;right:0;background:var(--bg);border-radius:22px 22px 0 0;z-index:201;transform:translateY(100%);transition:transform .35s cubic-bezier(.32,.72,0,1);padding:18px 18px calc(24px + env(safe-area-inset-bottom));max-height:55vh;overflow-y:auto;box-shadow:0 -4px 24px rgba(0,0,0,.08)}
.bottom-sheet.show{transform:translateY(0)}
.sheet-handle{width:36px;height:4px;background:var(--border);border-radius:2px;margin:0 auto 14px}
[data-theme="dark"] .sheet-handle{background:var(--border)}
.sheet-title{font-size:16px;font-weight:800;margin-bottom:4px;letter-spacing:-.3px;color:var(--text)}
.sheet-desc{font-size:12px;color:var(--muted);margin-bottom:14px;line-height:1.4}
.sheet-btn-row{display:flex;gap:10px;margin-top:14px}
.sheet-btn{flex:1;padding:12px;border:none;border-radius:var(--radius-md);font-size:14px;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;transition:all .15s}
.sheet-btn:active{transform:scale(.98);opacity:.9}
.sheet-btn-edit{background:var(--primary-light);color:var(--primary);border:1px solid rgba(74,108,247,.15)}
.sheet-btn-danger{background:#e8f4fd;color:#1e67a8;border:1px solid #d0e3f5}
[data-theme="dark"] .sheet-btn-danger{background:#1a3a52;color:#6bb6ff;border-color:#2a4a62}

/* Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.25);z-index:300;opacity:0;pointer-events:none;transition:opacity .3s;backdrop-filter:blur(2px)}
.modal-overlay.show{opacity:1;pointer-events:auto}
.modal{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) scale(.95);background:var(--bg);border-radius:var(--radius-lg);z-index:301;width:90%;max-width:380px;max-height:85vh;padding:24px 20px 28px;opacity:0;pointer-events:none;transition:all .3s cubic-bezier(.32,.72,0,1);box-shadow:var(--shadow-sm);color:var(--text);overflow-y:auto}
.modal-overlay.show .modal{opacity:1;transform:translate(-50%,-50%) scale(1);pointer-events:auto}
.modal-title{font-size:17px;font-weight:800;margin-bottom:16px;text-align:center;letter-spacing:-.3px}
.modal-field{margin-bottom:12px}
.modal-field label{display:block;font-size:12px;font-weight:600;color:var(--muted);margin-bottom:4px}
.modal-field input,.modal-field select,.modal-field textarea{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius-md);font-size:14px;outline:none;background:var(--input-bg);transition:all .2s;color:var(--text);font-family:inherit}
.modal-field input:focus,.modal-field select:focus,.modal-field textarea:focus{border-color:rgba(91,141,239,.3);background:var(--bg);box-shadow:0 0 0 3px rgba(91,141,239,.08)}
.modal-field textarea{min-height:120px;resize:vertical;line-height:1.5}
.modal-submit{width:100%;padding:12px;border:none;background:var(--primary);color:#fff;border-radius:var(--radius-md);font-size:15px;font-weight:700;cursor:pointer;margin-top:6px;transition:all .15s;box-shadow:0 4px 12px rgba(91,141,239,.25)}
.modal-submit:active{transform:scale(.98);opacity:.9}
.modal-close{position:absolute;top:14px;right:14px;width:30px;height:30px;border-radius:50%;border:none;background:var(--input-bg);cursor:pointer;font-size:16px;color:var(--muted);display:flex;align-items:center;justify-content:center;transition:all .15s}
.modal-close:active{background:var(--border);transform:scale(.9)}
[data-theme="dark"] .modal-close{background:var(--input-bg);color:var(--muted)}

/* Login modal */
.login-modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.25);z-index:400;opacity:0;pointer-events:none;transition:opacity .3s;backdrop-filter:blur(2px)}
.login-modal-overlay.show{opacity:1;pointer-events:auto}
.login-modal{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) scale(.95);background:var(--bg);border-radius:var(--radius-lg);z-index:401;width:90%;max-width:340px;max-height:85vh;padding:24px 20px 28px;opacity:0;pointer-events:none;transition:all .3s cubic-bezier(.32,.72,0,1);box-shadow:var(--shadow-sm);color:var(--text);overflow-y:auto}
.login-modal-overlay.show .login-modal{opacity:1;transform:translate(-50%,-50%) scale(1);pointer-events:auto}
.login-title{font-size:17px;font-weight:800;margin-bottom:4px;text-align:center;letter-spacing:-.3px}
.login-sub{font-size:12px;color:var(--muted);text-align:center;margin-bottom:18px}
.login-field{margin-bottom:12px}
.login-field input{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius-md);font-size:14px;outline:none;background:var(--input-bg);transition:all .2s;color:var(--text)}
.login-field input:focus{border-color:rgba(91,141,239,.3);background:var(--bg);box-shadow:0 0 0 3px rgba(91,141,239,.08)}
.login-submit{width:100%;padding:12px;border:none;background:var(--primary);color:#fff;border-radius:var(--radius-md);font-size:15px;font-weight:700;cursor:pointer;margin-top:6px;transition:all .15s;box-shadow:0 4px 12px rgba(91,141,239,.25)}

/* Settings */
.toggle-wrap{display:flex;align-items:center;justify-content:space-between;padding:8px 0}
.toggle-label{font-size:14px;font-weight:600}
.toggle-switch{position:relative;display:inline-block;width:44px;height:24px;cursor:pointer;flex-shrink:0}
.toggle-switch input{opacity:0;width:0;height:0}
.toggle-slider{position:absolute;inset:0;background:#d0d4dc;border-radius:24px;transition:background .2s}
.toggle-slider::after{content:"";position:absolute;height:20px;width:20px;left:2px;bottom:2px;background:#fff;border-radius:50%;transition:transform .2s;box-shadow:0 1px 3px rgba(0,0,0,.15)}
.toggle-switch input:checked+.toggle-slider{background:var(--primary)}
.toggle-switch input:checked+.toggle-slider::after{transform:translateX(20px)}

/* Bottom nav */
.bottom-nav{position:fixed;bottom:0;left:0;right:0;height:calc(64px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--bg);border-top:1px solid var(--item-border);box-shadow:0 -2px 8px rgba(0,0,0,0.03);display:flex;justify-content:space-around;align-items:center;z-index:100;border-radius:20px 20px 0 0;transition:background .3s}
.nav-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--muted);padding:4px 0;width:60px;border:none;background:none;cursor:pointer;font-size:10px;font-weight:600;transition:all .2s;position:relative}
.nav-btn.active{color:var(--primary)}
.nav-btn svg{width:22px;height:22px;transition:transform .2s}
.nav-btn:active svg{transform:scale(.92)}

/* Empty + Toast */
.empty{text-align:center;padding:80px 24px;color:var(--muted)}
.empty svg{width:64px;height:64px;color:var(--border);margin-bottom:12px;opacity:.6}
.empty .text{font-size:14px;font-weight:700;color:var(--muted)}
#toast{display:none;position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:rgba(31,41,55,.9);color:#fff;padding:10px 18px;border-radius:var(--radius-md);z-index:1000;font-size:13px;pointer-events:none;font-weight:600;backdrop-filter:blur(4px);box-shadow:var(--shadow-sm)}

/* Sort Options */
.sort-option{display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:var(--radius-md);cursor:pointer;transition:all .15s;font-size:15px;font-weight:600;color:var(--text)}
.sort-option:active{background:var(--item-border)}
.sort-check{width:20px;height:20px;border-radius:50%;border:2px solid var(--border);display:flex;align-items:center;justify-content:center;color:#fff;transition:all .15s;flex-shrink:0}
.sort-check.active{background:var(--primary);border-color:var(--primary)}
.sort-check svg{width:12px;height:12px;opacity:0}
.sort-check.active svg{opacity:1}
[data-theme="dark"] .sort-check{border-color:var(--border)}

/* PC 端适配 */
@media(min-width: 768px){
    #viewport{max-width:768px;margin:0 auto;border-left:1px solid var(--border);border-right:1px solid var(--border)}
    .bottom-nav{max-width:768px;left:50%;transform:translateX(-50%);border-radius:20px 20px 0 0}
    .dark-mode-btn{right:calc(50% - 384px + 16px)}
    .fab{right:calc(50% - 384px + 16px)}
    .tool-viewer-overlay{max-width:768px;left:50%;right:auto;transform:translateX(-50%);width:100%}
    .bottom-sheet{max-width:768px;left:50%;right:auto;transform:translateX(-50%) translateY(100%);width:100%}
    .bottom-sheet.show{transform:translateX(-50%) translateY(0)}
    .modal-overlay .modal{max-width:420px}
    .login-modal-overlay .login-modal{max-width:380px}
}

::-webkit-scrollbar{width:0;height:0}

/* Tool Viewer */
.tool-viewer-overlay{position:fixed;inset:0;background:var(--bg);z-index:1000;display:none;flex-direction:column}
.tool-viewer-overlay.show{display:flex}
.tool-viewer-header{position:sticky;top:0;z-index:10;height:56px;background:var(--bg);border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 16px;gap:12px;box-shadow:var(--shadow-sm);transition:background .3s}
.tool-viewer-btn{width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;background:transparent;transition:all .15s;color:var(--text)}
.tool-viewer-btn:active{background:var(--item-border);transform:scale(.96)}
.tool-viewer-btn svg{width:20px;height:20px}
.tool-viewer-title{flex:1;text-align:center;font-size:16px;font-weight:700;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#toolViewerFrame{flex:1;width:100%;border:none;background:var(--bg)}

/* 骨架屏 */
.skeleton{background:linear-gradient(90deg,var(--item-bg) 25%,var(--input-bg) 50%,var(--item-bg) 75%);background-size:200% 100%;animation:skeleton-loading 1.5s ease-in-out infinite}
@keyframes skeleton-loading{0%{background-position:200% 0}100%{background-position:-200% 0}}
.skeleton-line{height:16px;border-radius:4px;margin-bottom:8px}
.skeleton-line.short{width:60%}
.skeleton-avatar{width:40px;height:40px;border-radius:10px;margin-right:12px;flex-shrink:0}
.skeleton-item{display:flex;align-items:flex-start;padding:14px 16px;margin-bottom:8px}