/* ===== 主题变量 ===== */
  :root{
    --bg:#0d0d12;--card:#1a1a24;--card-border:#252530;--text:#e8e8ed;
    --text2:#aaa;--text3:#666;--accent:#4facfe;--accent2:#00f2fe;
    --up:#ff4d4f;--down:#52c41a;--topbar-bg:linear-gradient(135deg,#1a1a2e,#16213e);
    --tab-bg:#16161e;--nav-bg:#16161e;--quick-bg:#1e1e2e;--shadow:none;
  }
  body.light{
    --bg:#f5f6f8;--card:#fff;--card-border:#eef0f3;--text:#1a1a1a;
    --text2:#666;--text3:#999;--accent:#1a73e8;--accent2:#4285f4;
    --up:#e53935;--down:#43a047;--topbar-bg:linear-gradient(135deg,#1a73e8,#4285f4);
    --tab-bg:#fff;--nav-bg:#fff;--quick-bg:#f0f2f5;--shadow:0 1px 3px rgba(0,0,0,.06);
  }
  *{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
  body{
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue",sans-serif;
    background:var(--bg);color:var(--text);max-width:480px;margin:0 auto;
    min-height:100vh;padding-bottom:64px;font-size:14px;transition:background .3s,color .3s;
  }
  /* ===== 顶部栏 ===== */
  .topbar{
    background:var(--topbar-bg);padding:10px 14px 8px;position:sticky;top:0;z-index:100;
    border-bottom:1px solid var(--card-border);
  }
  .topbar-row{display:flex;align-items:center;justify-content:space-between}
  .app-title{font-size:16px;font-weight:700;color:#fff;display:flex;align-items:center;gap:6px}
  .app-title .logo{width:22px;height:22px;background:linear-gradient(135deg,var(--accent),var(--accent2));border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:12px}
  .top-actions{display:flex;align-items:center;gap:8px}
  .market-status{font-size:11px;color:rgba(255,255,255,.8);display:flex;align-items:center;gap:4px}
  .status-dot{width:6px;height:6px;border-radius:50%;background:#52c41a;display:inline-block;animation:pulse 2s infinite}
  .status-dot.night{background:#faad14}.status-dot.close{background:#888;animation:none}
  @keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
  .icon-btn{background:none;border:1px solid rgba(255,255,255,.2);border-radius:50%;width:26px;height:26px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:13px;color:#fff;transition:all .2s}
  .icon-btn:active{transform:scale(.9);background:rgba(255,255,255,.1)}
  .refresh-btn{background:none;border:1px solid rgba(255,255,255,.2);border-radius:12px;padding:2px 8px;font-size:11px;color:rgba(255,255,255,.8);cursor:pointer}
  /* 快捷指数条 */
  .quick-bar{display:flex;gap:6px;margin-top:8px;overflow-x:auto;padding-bottom:2px}
  .quick-bar::-webkit-scrollbar{display:none}
  .quick-item{flex-shrink:0;background:var(--quick-bg);border-radius:8px;padding:5px 10px;text-align:center;min-width:72px;transition:transform .15s}
  .quick-item:active{transform:scale(.95)}
  .quick-item .qn{font-size:10px;color:var(--text3)}
  .quick-item .qv{font-size:13px;font-weight:600;margin-top:1px}
  /* ===== Tab导航 ===== */
  .tabs{display:flex;background:var(--tab-bg);border-bottom:1px solid var(--card-border);position:sticky;top:57px;z-index:99}
  .tab{flex:1;text-align:center;padding:9px 0;font-size:13px;color:var(--text3);cursor:pointer;border-bottom:2px solid transparent;transition:all .2s}
  .tab.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}
  /* ===== 内容 ===== */
  .page{display:none;padding:8px 10px;animation:fadeIn .3s}
  .page.active{display:block}
  @keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
  .sec-title{font-size:13px;font-weight:700;color:var(--text2);margin:10px 4px 7px;display:flex;align-items:center;gap:5px}
  .sec-title::before{content:"";width:3px;height:12px;background:linear-gradient(180deg,var(--accent),var(--accent2));border-radius:2px}
  .sec-sub{font-size:10px;color:var(--text3);font-weight:400;margin-left:auto}
  /* ===== 卡片网格 ===== */
  .grid{display:grid;grid-template-columns:1fr 1fr;gap:7px}
  .card{
    background:var(--card);border-radius:9px;padding:10px 12px;border:1px solid var(--card-border);
    display:flex;align-items:center;justify-content:space-between;gap:8px;
    box-shadow:var(--shadow);transition:transform .15s,border-color .2s;
  }
  .card:active{transform:scale(.97);border-color:var(--accent)}
  .card-left{display:flex;align-items:center;gap:5px;flex:1;min-width:0}
  .card-right{text-align:right;flex-shrink:0}
  .card .c-icon{font-size:14px;flex-shrink:0}
  .card .c-name{font-size:12px;color:var(--text2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .card .c-price{font-size:15px;font-weight:700;color:var(--text);line-height:1.2}
  .card .c-unit{font-size:9px;color:var(--text3);margin-left:2px}
  .card .c-pct{font-size:11px;font-weight:600;margin-top:1px}
  .card .c-pct.big{font-size:16px;font-weight:700;margin-top:0}
  .card.empty{opacity:.5}
  .card.empty .c-price,.card.empty .c-pct{color:var(--text3)}
  .up{color:var(--up)}.down{color:var(--down)}.flat{color:var(--text3)}
  /* 大指数卡片 */
  .grid-2{display:grid;grid-template-columns:1fr 1fr;gap:7px}
  .card-big{background:var(--card);border-radius:9px;padding:11px 12px;border:1px solid var(--card-border);box-shadow:var(--shadow);transition:transform .15s}
  .card-big:active{transform:scale(.97)}
  .card-big .cb-name{font-size:12px;color:var(--text3);margin-bottom:5px;display:flex;align-items:center;gap:4px}
  .card-big .cb-price{font-size:20px;font-weight:700;color:var(--text)}
  .card-big .cb-pct{font-size:13px;font-weight:600;margin-top:3px}
  /* ===== 基金列表 ===== */
  .fund-list{display:flex;flex-direction:column;gap:6px}
  .fund-item{
    background:var(--card);border-radius:9px;padding:10px 12px;display:flex;
    justify-content:space-between;align-items:center;border:1px solid var(--card-border);
    box-shadow:var(--shadow);transition:transform .15s;
  }
  .fund-item:active{transform:scale(.98)}
  .fund-info{flex:1;min-width:0}
  .fund-name{font-size:13px;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .fund-meta{font-size:10px;color:var(--text3);margin-top:2px;display:flex;gap:8px;flex-wrap:wrap}
  .fund-tag{display:inline-block;font-size:9px;padding:1px 5px;border-radius:3px;background:rgba(79,172,254,.12);color:var(--accent)}
  .fund-est{text-align:right;flex-shrink:0;margin-left:8px}
  .fund-est .fe-val{font-size:16px;font-weight:700}
  .fund-est .fe-pct{font-size:12px;font-weight:600;margin-top:1px}
  .fund-est .fe-time{font-size:9px;color:var(--text3);margin-top:1px}
  /* ===== 底部导航 ===== */
  .bottom-nav{
    position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:480px;
    background:var(--nav-bg);border-top:1px solid var(--card-border);display:flex;z-index:100;
    padding-bottom:env(safe-area-inset-bottom);
  }
  .nav-item{flex:1;text-align:center;padding:7px 0 6px;font-size:10px;color:var(--text3);cursor:pointer;transition:color .2s}
  .nav-item.active{color:var(--accent)}
  .nav-item .ni-icon{font-size:19px;display:block;margin-bottom:1px;transition:transform .2s}
  .nav-item.active .ni-icon{transform:translateY(-1px)}
  /* 加载 */
  .loading{text-align:center;padding:30px;color:var(--text3);font-size:12px}
  .skeleton{background:linear-gradient(90deg,var(--card) 25%,var(--card-border) 50%,var(--card) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:6px}
  @keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}