:root{
      --brand:#0B3D91;
      --brand-dark:#072b68;
      --brand-soft:#eaf1ff;
      --accent:#ff765f;
      --cream:#fff9ed;
      --ink:#252832;
      --muted:#667085;
      --line:#e5e9f0;
      --surface:#fff;
      --page:#f6f8fc;
      --shadow:0 18px 50px rgba(11,61,145,.12);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:var(--page);
      font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;
      line-height:1.65;
    }
    body.drawer-lock{overflow:hidden}
    img{display:block;max-width:100%}
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}

    .topbar{
      color:#dce7ff;
      background:var(--brand-dark);
      font-size:13px;
    }
    .topbar-inner{
      min-height:38px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .topbar-welcome{margin:0}
    .topbar-contact{display:flex;align-items:center;gap:20px}
    .topbar-contact a:hover{color:#fff}

    .header{
      position:relative;
      z-index:50;
      background:rgba(255,255,255,.98);
      border-bottom:1px solid var(--line);
      box-shadow:0 5px 20px rgba(16,24,40,.04);
    }
    .header-inner{
      min-height:78px;
      display:flex;
      align-items:center;
      gap:24px;
    }
    .logo{
      min-width:max-content;
      display:inline-flex;
      align-items:center;
      gap:10px;
      color:var(--brand);
      font-weight:800;
      letter-spacing:.01em;
    }
    .logo img{
      width:42px;
      height:42px;
      object-fit:contain;
      border-radius:10px;
    }
    .main-nav{flex:1;align-self:stretch}
    .nav-list{
      height:100%;
      margin:0;
      padding:0;
      display:flex;
      align-items:stretch;
      justify-content:center;
      list-style:none;
    }
    .nav-item{
      position:relative;
      display:flex;
      align-items:stretch;
    }
    .nav-link{
      position:relative;
      display:flex;
      align-items:center;
      padding:0 13px;
      color:#303746;
      font-size:15px;
      font-weight:650;
      white-space:nowrap;
    }
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--brand)}
    .nav-link:after{
      position:absolute;
      right:13px;
      bottom:15px;
      left:13px;
      height:2px;
      background:var(--brand);
      content:"";
      transform:scaleX(0);
      transition:.2s ease;
    }
    .nav-link:hover:after,.nav-item:focus-within>.nav-link:after{transform:scaleX(1)}
    .nav-link.has-arrow{padding-right:27px}
    .nav-link.has-arrow:before{
      position:absolute;
      top:50%;
      right:12px;
      width:6px;
      height:6px;
      border-right:1.5px solid currentColor;
      border-bottom:1.5px solid currentColor;
      content:"";
      transform:translateY(-70%) rotate(45deg);
    }
    .dropdown-panel,.mega-menu{
      position:absolute;
      top:100%;
      left:0;
      z-index:80;
      visibility:hidden;
      opacity:0;
      transform:translateY(8px);
      transition:.18s ease;
      pointer-events:none;
    }
    .nav-item:hover>.dropdown-panel,
    .nav-item:focus-within>.dropdown-panel,
    .nav-item:hover>.mega-menu,
    .nav-item:focus-within>.mega-menu{
      visibility:visible;
      opacity:1;
      transform:translateY(0);
      pointer-events:auto;
    }
    .dropdown-panel{
      width:330px;
      padding:16px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:0 0 16px 16px;
      box-shadow:var(--shadow);
    }
    .dropdown-title{
      margin-bottom:9px;
      padding-bottom:10px;
      display:flex;
      justify-content:space-between;
      gap:10px;
      border-bottom:1px solid var(--line);
      font-size:13px;
    }
    .dropdown-title span{font-weight:800;color:var(--ink)}
    .dropdown-title a{color:var(--brand)}
    .dropdown-article{
      display:block;
      padding:9px 10px;
      border-radius:9px;
      overflow:hidden;
      color:#4a5260;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .dropdown-article:hover{color:var(--brand);background:var(--brand-soft)}
    .mega-menu{
      left:50%;
      width:700px;
      padding:20px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:0 0 18px 18px;
      box-shadow:var(--shadow);
      transform:translate(-50%,8px);
    }
    .nav-item:hover>.mega-menu,
    .nav-item:focus-within>.mega-menu{transform:translate(-50%,0)}
    .mega-menu-wide{width:780px}
    .mega-head{
      margin-bottom:15px;
      display:flex;
      align-items:baseline;
      justify-content:space-between;
      gap:15px;
    }
    .mega-head strong{color:var(--brand);font-size:17px}
    .mega-head span{color:var(--muted);font-size:12px}
    .mega-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:10px;
    }
    .mega-card{
      min-width:0;
      min-height:86px;
      padding:11px;
      display:flex;
      align-items:flex-start;
      gap:10px;
      border:1px solid var(--line);
      border-radius:12px;
      background:#fff;
      transition:.2s ease;
    }
    .mega-card:hover{
      border-color:#b8caec;
      background:var(--brand-soft);
      transform:translateY(-2px);
    }
    .mega-card>img{
      width:40px;
      height:40px;
      flex:0 0 40px;
      object-fit:contain;
      border-radius:8px;
      background:#f2f5fa;
    }
    .video-mega-card>img{width:62px;height:46px;flex-basis:62px;object-fit:cover}
    .mega-card-body{min-width:0;display:block}
    .mega-card-body strong{
      display:block;
      overflow:hidden;
      color:#303746;
      font-size:13px;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .mega-card-body small{
      display:block;
      margin-top:2px;
      color:var(--muted);
      font-size:11px;
    }
    .mega-card-body p{
      margin:4px 0 0;
      display:-webkit-box;
      overflow:hidden;
      color:var(--muted);
      font-size:11px;
      line-height:1.45;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }
    .mega-categories{
      margin-bottom:14px;
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .mega-categories a{
      padding:5px 10px;
      color:var(--brand);
      background:var(--brand-soft);
      border-radius:999px;
      font-size:12px;
    }
    .mega-categories a:hover{color:#fff;background:var(--brand)}
    .mega-footer{
      margin-top:14px;
      padding-top:12px;
      display:block;
      color:var(--brand);
      border-top:1px solid var(--line);
      font-size:13px;
      font-weight:700;
      text-align:right;
    }
    .header-btns{
      min-width:max-content;
      display:flex;
      align-items:center;
      gap:10px;
    }
    .member-entry{display:inline-flex;align-items:center}
    .account-entry{
      padding:9px 17px;
      color:#fff;
      background:var(--brand);
      border-radius:10px;
      font-size:14px;
      font-weight:700;
    }
    .account-entry:hover{background:var(--brand-dark)}
    .hamburger{
      width:42px;
      height:42px;
      padding:10px;
      display:none;
      border:0;
      border-radius:10px;
      background:var(--brand-soft);
      cursor:pointer;
    }
    .hamburger span{
      width:100%;
      height:2px;
      margin:4px 0;
      display:block;
      background:var(--brand);
      transition:.2s ease;
    }
    .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;
      inset:0;
      z-index:90;
      visibility:hidden;
      opacity:0;
      background:rgba(18,25,38,.56);
      transition:.25s ease;
    }
    .drawer-overlay.open{visibility:visible;opacity:1}
    .mobile-drawer{
      position:fixed;
      top:0;
      right:0;
      bottom:0;
      z-index:100;
      width:min(390px,90vw);
      overflow-y:auto;
      background:#fff;
      box-shadow:-18px 0 50px rgba(0,0,0,.18);
      transform:translateX(105%);
      transition:.28s ease;
    }
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{
      min-height:72px;
      padding:14px 18px;
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      background:var(--brand);
    }
    .drawer-head>a{
      padding:7px 11px;
      border:1px solid rgba(255,255,255,.4);
      border-radius:8px;
      font-size:13px;
    }
    .drawer-close{
      width:38px;
      height:38px;
      margin-left:auto;
      color:#fff;
      background:rgba(255,255,255,.13);
      border:0;
      border-radius:9px;
      font-size:28px;
      line-height:1;
      cursor:pointer;
    }
    .drawer-menu{padding:14px 18px 30px}
    .drawer-link,.drawer-toggle{
      width:100%;
      padding:14px 4px;
      display:block;
      color:#2f3745;
      background:none;
      border:0;
      border-bottom:1px solid var(--line);
      font-weight:700;
      text-align:left;
      cursor:pointer;
    }
    .drawer-toggle{position:relative}
    .drawer-toggle:after{
      position:absolute;
      right:5px;
      content:"+";
      color:var(--brand);
      font-size:20px;
    }
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{
      max-height:0;
      overflow:hidden;
      background:#f7f9fd;
      transition:max-height .3s ease;
    }
    .drawer-submenu.open{max-height:620px}
    .drawer-submenu a{
      padding:10px 16px;
      display:block;
      color:#586174;
      border-bottom:1px solid #edf0f5;
      font-size:14px;
    }
    .drawer-submenu a:hover{color:var(--brand)}

    .tag-index-page{min-height:620px}
    .tag-index-page .tag-hero{
      position:relative;
      overflow:hidden;
      padding:76px 0 68px;
      color:#fff;
      background:
        radial-gradient(circle at 15% 20%,rgba(255,118,95,.3),transparent 25%),
        radial-gradient(circle at 86% 75%,rgba(255,255,255,.15),transparent 24%),
        linear-gradient(135deg,var(--brand-dark),var(--brand));
    }
    .tag-index-page .tag-hero:before,
    .tag-index-page .tag-hero:after{
      position:absolute;
      border:1px solid rgba(255,255,255,.14);
      border-radius:50%;
      content:"";
    }
    .tag-index-page .tag-hero:before{width:360px;height:360px;top:-210px;right:8%}
    .tag-index-page .tag-hero:after{width:240px;height:240px;bottom:-170px;left:10%}
    .tag-index-page .tag-hero-inner{
      position:relative;
      z-index:1;
      max-width:780px;
      margin:auto;
      text-align:center;
    }
    .tag-index-page .eyebrow{
      margin-bottom:15px;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#fff1d7;
      font-size:14px;
      font-weight:700;
      letter-spacing:.08em;
    }
    .tag-index-page .eyebrow:before,
    .tag-index-page .eyebrow:after{
      width:28px;
      height:1px;
      background:currentColor;
      content:"";
    }
    .tag-index-page h1{
      margin:0;
      font-size:clamp(34px,5vw,58px);
      line-height:1.16;
    }
    .tag-index-page .tag-hero p{
      max-width:680px;
      margin:19px auto 0;
      color:#dbe7ff;
      font-size:17px;
    }
    .tag-index-page .tag-directory{padding:64px 0 82px}
    .tag-index-page .section-head{
      margin-bottom:28px;
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:20px;
    }
    .tag-index-page .section-head h2{
      margin:0 0 6px;
      color:var(--ink);
      font-size:30px;
    }
    .tag-index-page .section-head p{margin:0;color:var(--muted)}
    .tag-index-page .tag-count{
      padding:7px 13px;
      color:var(--brand);
      background:var(--brand-soft);
      border-radius:999px;
      font-size:13px;
      font-weight:700;
      white-space:nowrap;
    }
    .tag-index-page .tag-cloud{
      padding:34px;
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      justify-content:center;
      gap:14px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:24px;
      box-shadow:var(--shadow);
    }
    .tag-index-page .tag-chip{
      position:relative;
      padding:11px 17px;
      display:inline-flex;
      align-items:center;
      gap:9px;
      color:#344054;
      background:#f8faff;
      border:1px solid #dfe6f2;
      border-radius:999px;
      font-weight:700;
      transition:.2s ease;
    }
    .tag-index-page .tag-chip:nth-child(4n+1){font-size:18px}
    .tag-index-page .tag-chip:nth-child(4n+2){color:#a83c2d;background:#fff1ed;border-color:#ffd4cb}
    .tag-index-page .tag-chip:nth-child(4n+3){font-size:15px}
    .tag-index-page .tag-chip:hover{
      color:#fff;
      background:var(--brand);
      border-color:var(--brand);
      box-shadow:0 10px 24px rgba(11,61,145,.2);
      transform:translateY(-3px);
    }
    .tag-index-page .tag-chip small{
      min-width:24px;
      padding:1px 7px;
      color:var(--brand);
      background:#fff;
      border-radius:999px;
      font-size:11px;
      text-align:center;
    }
    .tag-index-page .tag-guide{
      margin-top:28px;
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:18px;
    }
    .tag-index-page .guide-card{
      padding:24px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:18px;
    }
    .tag-index-page .guide-icon{
      width:42px;
      height:42px;
      display:grid;
      place-items:center;
      color:#fff;
      background:var(--accent);
      border-radius:12px;
      font-weight:900;
    }
    .tag-index-page .guide-card:nth-child(2) .guide-icon{background:var(--brand)}
    .tag-index-page .guide-card:nth-child(3) .guide-icon{color:var(--ink);background:#ffd58e}
    .tag-index-page .guide-card h3{margin:15px 0 7px;font-size:18px}
    .tag-index-page .guide-card p{margin:0;color:var(--muted);font-size:14px}

    .footer{color:#d6deed;background:#172033}
    .footer-main{
      padding:58px 0 42px;
      display:grid;
      grid-template-columns:1.45fr repeat(3,1fr);
      gap:42px;
    }
    .footer .logo{color:#fff}
    .footer-brand p{max-width:390px;margin:18px 0;color:#aeb9ca;font-size:14px}
    .footer-social{color:#fff}
    .footer h3{margin:5px 0 18px;color:#fff;font-size:16px}
    .footer-links,.footer-contact{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
    .footer-links a,.footer-contact a{color:#b7c1d1;font-size:14px}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-contact span{color:#8491a5;font-size:12px}
    .footer-bottom{
      min-height:70px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      color:#8996aa;
      border-top:1px solid rgba(255,255,255,.1);
      font-size:13px;
    }
    .footer-bottom-links{display:flex;gap:18px}
    .footer-bottom-links a:hover{color:#fff}

    @media (max-width:1100px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{min-height:70px}
      .header-btns{margin-left:auto}
      .footer-main{grid-template-columns:1.3fr repeat(2,1fr)}
      .footer-main>div:last-child{grid-column:2/4}
    }
    @media (max-width:760px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{padding:8px 0;align-items:flex-start;flex-direction:column;gap:2px}
      .topbar-contact{gap:10px;flex-wrap:wrap}
      .header-btns .member-entry,.account-entry{display:none}
      .tag-index-page .tag-hero{padding:56px 0}
      .tag-index-page .tag-hero p{font-size:15px}
      .tag-index-page .tag-directory{padding:42px 0 58px}
      .tag-index-page .section-head{align-items:flex-start;flex-direction:column}
      .tag-index-page .tag-cloud{padding:22px 16px;justify-content:flex-start;gap:10px}
      .tag-index-page .tag-chip{padding:9px 13px;font-size:14px!important}
      .tag-index-page .tag-guide{grid-template-columns:1fr}
      .footer-main{padding:44px 0 30px;grid-template-columns:1fr 1fr;gap:30px}
      .footer-brand{grid-column:1/-1}
      .footer-main>div:last-child{grid-column:auto}
      .footer-bottom{padding:20px 0;align-items:flex-start;flex-direction:column}
      .footer-bottom-links{flex-wrap:wrap}
    }
    @media (max-width:480px){
      .topbar-welcome{display:none}
      .topbar-inner{min-height:36px;justify-content:center}
      .topbar-contact{font-size:12px}
      .logo span{max-width:135px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
      .footer-main{grid-template-columns:1fr}
      .footer-brand,.footer-main>div:last-child{grid-column:auto}
    }