:root{
      --theme:#0B3D91;
      --theme-dark:#072b68;
      --theme-soft:#eaf1fc;
      --coral:#f47a61;
      --cream:#fff9ed;
      --ink:#252a34;
      --muted:#667085;
      --line:#e4e8ef;
      --white:#fff;
      --shadow:0 18px 45px rgba(11,61,145,.12);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f7f9fc;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.65}
    body,button,input{font:inherit}
    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none}
    button{color:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}

    .topbar{background:var(--theme-dark);color:#dce8ff;font-size:13px}
    .topbar .container{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-links{display:flex;align-items:center;gap:24px}
    .topbar a:hover{color:#fff;text-decoration:underline}

    .header{position:relative;z-index:50;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);box-shadow:0 7px 22px rgba(17,24,39,.04)}
    .header-inner{height:76px;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:11px;min-width:max-content;font-weight:800;color:var(--theme);font-size:19px}
    .logo img{width:42px;height:42px;object-fit:contain;border-radius:10px}
    .main-nav{align-self:stretch;margin-left:auto}
    .nav-list{height:100%;display:flex;align-items:center;gap:2px;margin:0;padding:0;list-style:none}
    .nav-item{position:relative;height:100%;display:flex;align-items:center}
    .nav-link{height:100%;display:flex;align-items:center;padding:0 13px;font-size:15px;font-weight:700;white-space:nowrap;transition:.2s}
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .has-arrow::after{content:"";width:6px;height:6px;margin-left:7px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px)}

    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:0;visibility:hidden;opacity:0;transform:translateY(8px);pointer-events:none;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:0 24px 55px rgba(15,23,42,.16);transition:opacity .2s,transform .2s,visibility .2s}
    .dropdown-panel::before,.mega-menu::before{content:"";position:absolute;left:0;right:0;top:-10px;height:10px}
    .nav-item:hover>.dropdown-panel,.nav-item:hover>.mega-menu,.nav-item:focus-within>.dropdown-panel,.nav-item:focus-within>.mega-menu{visibility:visible;opacity:1;transform:translateY(0);pointer-events:auto}
    .dropdown-panel{width:330px;padding:20px}
    .mega-menu{left:50%;width:min(760px,80vw);padding:22px;transform:translate(-50%,8px)}
    .nav-item:hover>.mega-menu,.nav-item:focus-within>.mega-menu{transform:translate(-50%,0)}
    .nav-item:nth-last-child(-n+3) .mega-menu{left:auto;right:0;transform:translateY(8px)}
    .nav-item:nth-last-child(-n+3):hover>.mega-menu,.nav-item:nth-last-child(-n+3):focus-within>.mega-menu{transform:translateY(0)}
    .panel-title{margin:0 0 10px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.08em}
    .panel-list{display:flex;flex-wrap:wrap;gap:8px}
    .panel-list a{padding:8px 11px;border-radius:9px;background:#f5f7fb;color:#344054;font-size:13px}
    .panel-list a:hover{background:var(--theme-soft);color:var(--theme)}
    .dropdown-panel .panel-list{display:grid}
    .dropdown-panel .panel-list a{background:transparent;border-bottom:1px solid #edf0f5;border-radius:0;padding:9px 2px}
    .mega-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
    .mega-card{min-width:0;display:grid;grid-template-columns:38px 1fr;align-items:center;gap:5px 10px;padding:12px;border:1px solid #edf0f5;border-radius:12px;background:#fff;transition:.2s}
    .mega-card:hover{border-color:#b9ccef;box-shadow:0 10px 22px rgba(11,61,145,.09);transform:translateY(-2px)}
    .mega-card img{grid-row:1/4;width:38px;height:38px;object-fit:contain;border-radius:8px}
    .mega-card strong,.mega-card small{min-width:0;overflow:hidden;text-overflow:ellipsis}
    .mega-card strong{font-size:14px;white-space:nowrap}
    .mega-card small{display:block;color:var(--muted);font-size:11px;line-height:1.45}
    .mega-footer{display:block;margin-top:14px;padding-top:12px;border-top:1px solid var(--line);color:var(--theme);font-weight:800;font-size:13px;text-align:right}

    .header-btns{display:flex;align-items:center;gap:9px;min-width:max-content}
    .member-link{color:var(--theme);font-size:14px;font-weight:700}
    .open-account{padding:10px 16px;border-radius:10px;background:var(--theme);color:#fff;font-size:14px;font-weight:800;box-shadow:0 7px 16px rgba(11,61,145,.2)}
    .open-account:hover{background:var(--theme-dark)}
    .hamburger{width:42px;height:42px;padding:10px;border:0;border-radius:10px;background:var(--theme-soft);cursor:pointer;display:none}
    .hamburger span{display:block;width:21px;height:2px;margin:4px auto;background:var(--theme);transition:.2s}
    .hamburger.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
    .hamburger.active span:nth-child(2){opacity:0}
    .hamburger.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

    .drawer-overlay{position:fixed;z-index:98;inset:0;background:rgba(15,23,42,.58);opacity:0;visibility:hidden;transition:.25s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;z-index:99;top:0;right:0;width:min(390px,88vw);height:100dvh;background:#fff;box-shadow:-20px 0 60px rgba(0,0,0,.18);transform:translateX(105%);transition:transform .28s;overflow-y:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{min-height:72px;display:flex;align-items:center;gap:12px;padding:15px 20px;color:var(--theme);border-bottom:1px solid var(--line);font-weight:700}
    .drawer-head>a{padding:7px 11px;border-radius:8px;background:var(--theme-soft)}
    .drawer-close{margin-left:auto;width:38px;height:38px;border:0;border-radius:50%;background:#f0f2f5;font-size:26px;line-height:1;cursor:pointer}
    .drawer-menu{padding:12px 20px 32px}
    .drawer-link,.drawer-toggle{width:100%;display:flex;align-items:center;justify-content:space-between;padding:14px 4px;border:0;border-bottom:1px solid #edf0f5;background:transparent;font-weight:800;text-align:left;cursor:pointer}
    .drawer-toggle::after{content:"+";font-size:20px;color:var(--theme)}
    .drawer-toggle.active::after{content:"−"}
    .drawer-submenu{display:none;padding:7px 0 12px 13px;border-bottom:1px solid #edf0f5}
    .drawer-submenu.open{display:grid}
    .drawer-submenu a{padding:9px 8px;color:#475467;font-size:14px;border-left:2px solid #d9e3f5}
    .drawer-submenu a:hover{color:var(--theme);border-left-color:var(--theme)}

    .tag-index-page{min-height:680px}
    .tag-index-page .tag-hero{position:relative;overflow:hidden;padding:82px 0 72px;background:linear-gradient(135deg,var(--theme-dark),var(--theme) 62%,#2d65bf);color:#fff;text-align:center}
    .tag-index-page .tag-hero::before,.tag-index-page .tag-hero::after{content:"";position:absolute;border-radius:50%;border:1px solid rgba(255,255,255,.16)}
    .tag-index-page .tag-hero::before{width:420px;height:420px;left:-170px;top:-260px}
    .tag-index-page .tag-hero::after{width:330px;height:330px;right:-100px;bottom:-230px}
    .tag-index-page .eyebrow{display:inline-flex;padding:7px 13px;border:1px solid rgba(255,255,255,.27);border-radius:999px;background:rgba(255,255,255,.1);font-size:13px;font-weight:800;letter-spacing:.08em}
    .tag-index-page h1{max-width:820px;margin:18px auto 12px;font-size:clamp(34px,5vw,58px);line-height:1.13}
    .tag-index-page .lead{max-width:700px;margin:0 auto;color:#dce8ff;font-size:17px}
    .tag-index-page .tag-section{padding:72px 0 84px}
    .tag-index-page .section-heading{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:25px}
    .tag-index-page .section-heading h2{margin:0 0 5px;font-size:30px}
    .tag-index-page .section-heading p{margin:0;color:var(--muted)}
    .tag-index-page .tag-count{padding:8px 13px;border-radius:999px;background:var(--theme-soft);color:var(--theme);font-size:13px;font-weight:800}
    .tag-index-page .tag-cloud{position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:14px;min-height:360px;padding:48px;border:1px solid var(--line);border-radius:28px;background:radial-gradient(circle at center,#fff 0,#fff 48%,#f2f6fc 100%);box-shadow:var(--shadow)}
    .tag-index-page .tag-cloud::before{content:"主题导航";position:absolute;left:25px;top:20px;color:#98a2b3;font-size:12px;font-weight:800;letter-spacing:.12em}
    .tag-index-page .tag-item{display:inline-flex;align-items:center;gap:8px;padding:11px 17px;border:1px solid #dce3ee;border-radius:999px;background:#fff;color:#344054;font-weight:700;box-shadow:0 5px 13px rgba(15,23,42,.05);transition:.22s}
    .tag-index-page .tag-item::before{content:"#";color:var(--coral);font-weight:900}
    .tag-index-page .tag-item:nth-child(4n+1){font-size:19px;color:var(--theme);border-color:#b8caeb;background:var(--theme-soft)}
    .tag-index-page .tag-item:nth-child(4n+2){font-size:15px}
    .tag-index-page .tag-item:nth-child(4n+3){font-size:17px;background:var(--cream);border-color:#f2d9bc}
    .tag-index-page .tag-item:hover{color:#fff;background:var(--theme);border-color:var(--theme);transform:translateY(-4px);box-shadow:0 12px 24px rgba(11,61,145,.2)}
    .tag-index-page .tag-item:hover::before{color:#fff}
    .tag-index-page .explore-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}
    .tag-index-page .explore-card{padding:25px;border:1px solid var(--line);border-radius:18px;background:#fff}
    .tag-index-page .explore-card span{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:11px;background:var(--theme-soft);color:var(--theme);font-weight:900}
    .tag-index-page .explore-card h3{margin:15px 0 7px;font-size:18px}
    .tag-index-page .explore-card p{margin:0;color:var(--muted);font-size:14px}
    .tag-index-page .notice{margin-top:28px;padding:18px 22px;border-left:4px solid var(--coral);border-radius:0 12px 12px 0;background:#fff4ef;color:#5e423c;font-size:14px}

    .footer{padding:58px 0 0;background:#101828;color:#cbd5e1}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:44px}
    .footer h3,.footer-brand strong{display:block;margin:0 0 16px;color:#fff;font-size:17px}
    .footer-brand strong{font-size:22px}
    .footer p{margin:8px 0;color:#98a2b3;font-size:14px}
    .footer-grid>div>a{display:block;width:fit-content;margin:9px 0;color:#cbd5e1;font-size:14px}
    .footer-grid>div>a:hover{color:#fff}
    .footer-bottom{margin-top:42px;padding:19px 0;border-top:1px solid #293548;display:flex;justify-content:space-between;gap:20px;color:#98a2b3;font-size:13px}

    @media (max-width:1080px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{height:70px}
      .header-btns{margin-left:auto}
    }
    @media (max-width:760px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{padding:8px 0;align-items:flex-start}
      .topbar-links{display:grid;gap:2px;text-align:right}
      .member-link,.open-account{display:none}
      .logo span{max-width:145px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
      .tag-index-page .tag-hero{padding:60px 0 55px}
      .tag-index-page .tag-section{padding:50px 0 62px}
      .tag-index-page .section-heading{display:block}
      .tag-index-page .tag-count{display:inline-flex;margin-top:12px}
      .tag-index-page .tag-cloud{min-height:300px;padding:52px 18px 28px;gap:9px;border-radius:20px}
      .tag-index-page .tag-item,.tag-index-page .tag-item:nth-child(n){padding:9px 13px;font-size:14px}
      .tag-index-page .explore-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
    }
    @media (max-width:520px){
      .topbar .container{display:block}
      .topbar-links{margin-top:4px;text-align:left}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{display:grid}
    }