:root{
      --theme:#0B3D91;
      --theme-dark:#082b68;
      --ink:#172033;
      --muted:#6c7688;
      --line:#e4e9f1;
      --soft:#f4f7fb;
      --white:#fff;
      --shadow:0 18px 50px rgba(19,43,83,.10);
      --radius:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:#f7f9fc;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",Arial,sans-serif;
      line-height:1.65;
    }
    a{color:inherit;text-decoration:none}
    button{font:inherit}
    img{max-width:100%;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}

    .topbar{
      background:#f0f3f8;
      border-bottom:1px solid #e2e7ef;
      color:#657187;
      font-size:13px;
    }
    .topbar .container{
      min-height:36px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
    }
    .topbar-links{display:flex;gap:22px}
    .topbar a:hover{color:var(--theme)}

    .header{
      position:relative;
      z-index:20;
      background:rgba(255,255,255,.96);
      border-bottom:1px solid var(--line);
    }
    .header-inner{
      min-height:76px;
      display:flex;
      align-items:center;
      gap:30px;
    }
    .logo{
      flex:0 0 auto;
      display:flex;
      align-items:center;
      gap:10px;
      color:var(--theme-dark);
      font-weight:800;
      font-size:18px;
      white-space:nowrap;
    }
    .logo img{width:34px;height:34px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{
      display:flex;
      align-items:stretch;
      justify-content:center;
      gap:3px;
      list-style:none;
      padding:0;
      margin:0;
    }
    .nav-item{position:relative}
    .nav-link{
      display:flex;
      align-items:center;
      min-height:76px;
      padding:0 14px;
      color:#354056;
      font-size:14px;
      white-space:nowrap;
    }
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .has-arrow:after{
      content:"";
      width:6px;
      height:6px;
      margin:0 0 3px 8px;
      border-right:1px solid currentColor;
      border-bottom:1px solid currentColor;
      transform:rotate(45deg);
    }
    .dropdown-panel,.mega-menu{
      position:absolute;
      top:calc(100% - 1px);
      left:50%;
      transform:translateX(-50%) translateY(8px);
      width:270px;
      padding:18px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:0 0 14px 14px;
      box-shadow:var(--shadow);
      opacity:0;
      visibility:hidden;
      pointer-events:none;
      transition:.2s ease;
    }
    .mega-menu{width:560px}
    .nav-item:hover>.dropdown-panel,
    .nav-item:focus-within>.dropdown-panel,
    .nav-item:hover>.mega-menu,
    .nav-item:focus-within>.mega-menu{
      opacity:1;
      visibility:visible;
      pointer-events:auto;
      transform:translateX(-50%) translateY(0);
    }
    .dropdown-panel:before,.mega-menu:before{
      content:"";
      position:absolute;
      left:0;
      right:0;
      top:-12px;
      height:12px;
    }
    .dropdown-panel a{
      display:block;
      padding:8px 6px;
      color:#4a566c;
      font-size:14px;
      border-bottom:1px solid #f0f2f6;
    }
    .dropdown-panel a:last-child{
      color:var(--theme);
      border:0;
      font-weight:700;
    }
    .mega-title{
      margin:0 0 12px;
      color:var(--theme-dark);
      font-size:14px;
      font-weight:800;
    }
    .mega-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:9px;
    }
    .mega-card{
      display:block;
      min-height:62px;
      padding:10px;
      border:1px solid #edf0f5;
      border-radius:10px;
      background:#fbfcfe;
      color:#566176;
      font-size:11px;
      line-height:1.5;
    }
    .mega-card:hover{border-color:#aec0df;background:#f3f7fd}
    .mega-card strong{color:#26344d;font-size:13px}
    .mega-card img{
      width:22px;
      height:22px;
      object-fit:contain;
      float:left;
      margin:0 7px 3px 0;
    }
    .mega-footer{
      display:block;
      margin-top:14px;
      padding-top:12px;
      border-top:1px solid var(--line);
      color:var(--theme);
      font-size:13px;
      font-weight:700;
    }
    .header-btns{
      display:flex;
      align-items:center;
      gap:9px;
      white-space:nowrap;
    }
    .member-btn,.account-btn{
      padding:9px 13px;
      border-radius:8px;
      font-size:13px;
    }
    .member-btn{color:var(--theme);background:#edf3fc}
    .account-btn{color:#fff;background:var(--theme)}
    .hamburger{
      display:none;
      width:42px;
      height:40px;
      padding:9px;
      border:1px solid var(--line);
      border-radius:8px;
      background:#fff;
      cursor:pointer;
    }
    .hamburger span{
      display:block;
      height:2px;
      margin:5px 0;
      background:var(--theme-dark);
      transition:.2s;
    }
    .hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
    .hamburger.active span:nth-child(2){opacity:0}
    .hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

    .drawer-overlay{
      position:fixed;
      inset:0;
      z-index:40;
      background:rgba(12,25,48,.42);
      opacity:0;
      visibility:hidden;
      transition:.25s;
    }
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{
      position:fixed;
      z-index:50;
      top:0;
      right:0;
      width:min(390px,88vw);
      height:100vh;
      overflow:auto;
      background:#fff;
      transform:translateX(100%);
      transition:.28s ease;
      box-shadow:-18px 0 50px rgba(0,0,0,.16);
    }
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{
      min-height:72px;
      display:flex;
      align-items:center;
      gap:12px;
      padding:0 22px;
      border-bottom:1px solid var(--line);
      color:var(--theme-dark);
      font-weight:800;
    }
    .drawer-head>a{
      margin-left:auto;
      color:var(--theme);
      font-size:13px;
    }
    .drawer-close{
      border:0;
      background:none;
      color:#7b8494;
      font-size:28px;
      cursor:pointer;
    }
    .drawer-menu{padding:12px 22px 30px}
    .drawer-link,.drawer-toggle{
      display:block;
      width:100%;
      padding:14px 0;
      text-align:left;
      color:#354056;
      border:0;
      border-bottom:1px solid #edf0f5;
      background:none;
      cursor:pointer;
      font-size:15px;
    }
    .drawer-toggle:after{
      content:"+";
      float:right;
      color:var(--theme);
      font-size:20px;
    }
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{
      display:none;
      padding:6px 0 8px 14px;
      border-bottom:1px solid #edf0f5;
    }
    .drawer-submenu.open{display:block}
    .drawer-submenu a{
      display:block;
      padding:8px 0;
      color:#69758a;
      font-size:13px;
    }

    .tag-index-page{padding:64px 0 90px}
    .tag-hero{text-align:center;margin-bottom:38px}
    .tag-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--theme);
      font-size:13px;
      font-weight:800;
      letter-spacing:.08em;
    }
    .tag-kicker:before{
      content:"";
      width:24px;
      height:2px;
      background:var(--theme);
    }
    .tag-hero h1{
      margin:12px 0 10px;
      color:#172b4d;
      font-size:clamp(30px,5vw,52px);
      line-height:1.15;
      letter-spacing:-.04em;
    }
    .tag-hero p{
      max-width:680px;
      margin:0 auto;
      color:var(--muted);
      font-size:16px;
    }
    .tag-board{
      padding:34px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:22px;
      box-shadow:var(--shadow);
    }
    .tag-board-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:20px;
      margin-bottom:28px;
      padding-bottom:18px;
      border-bottom:1px solid var(--line);
    }
    .tag-board-head h2{margin:0;color:#1e3152;font-size:22px}
    .tag-board-head span{color:#8791a1;font-size:13px}
    .tag-cloud{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:13px;
      flex-wrap:wrap;
      min-height:260px;
      padding:20px 10px 28px;
    }
    .tag-cloud a{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:11px 17px;
      border:1px solid #dce5f2;
      border-radius:999px;
      color:#36547e;
      background:#f8fbff;
      font-size:14px;
      transition:.2s ease;
    }
    .tag-cloud a:nth-child(3n){font-size:17px;color:var(--theme-dark)}
    .tag-cloud a:nth-child(4n){font-size:13px;background:#f0f5fc}
    .tag-cloud a:hover{
      color:#fff;
      background:var(--theme);
      border-color:var(--theme);
      transform:translateY(-3px);
      box-shadow:0 8px 18px rgba(11,61,145,.2);
    }
    .tag-cloud small{color:#8c98aa;font-size:11px}
    .tag-cloud a:hover small{color:#dce9ff}
    .tag-note{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:16px 18px;
      border-radius:12px;
      color:#5f6c80;
      background:#f5f8fc;
      font-size:13px;
    }
    .tag-note strong{color:var(--theme)}
    .footer{
      padding:52px 0 20px;
      color:#aeb9ca;
      background:#101c32;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.35fr 1fr 1fr 1.2fr;
      gap:35px;
    }
    .footer h3,.footer h4{margin:0 0 14px;color:#fff}
    .footer h3{font-size:20px}
    .footer h4{font-size:14px}
    .footer p{margin:7px 0;font-size:13px}
    .footer-grid>div>a{
      display:block;
      margin:8px 0;
      color:#aeb9ca;
      font-size:13px;
    }
    .footer a:hover{color:#fff}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:20px;
      margin-top:38px;
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.12);
      color:#7f8ca2;
      font-size:12px;
    }

    @media(max-width:980px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-btns{margin-left:auto}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:640px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{align-items:flex-start;flex-direction:column;gap:2px;padding:8px 0}
      .topbar-links{gap:12px;flex-wrap:wrap}
      .account-btn,.member-btn{display:none}
      .header-inner{min-height:66px}
      .logo{font-size:16px}
      .tag-index-page{padding:42px 0 60px}
      .tag-hero h1{font-size:36px}
      .tag-hero p{font-size:14px}
      .tag-board{padding:22px 16px;border-radius:16px}
      .tag-board-head{align-items:flex-start;flex-direction:column;gap:5px}
      .tag-cloud{gap:9px;padding:10px 0 22px}
      .tag-cloud a{padding:9px 12px;font-size:13px}
      .tag-cloud a:nth-child(3n){font-size:15px}
      .footer-grid{grid-template-columns:1fr;gap:25px}
      .footer-bottom{align-items:flex-start;flex-direction:column;gap:8px}
    }