:root{
      --theme:#0B3D91;
      --ink:#101318;
      --muted:#667085;
      --line:#e5e7eb;
      --paper:#f7f8fa;
      --white:#fff;
      --shadow:0 18px 50px rgba(15,23,42,.09);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:var(--paper);font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;line-height:1.6}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}

    .topbar{background:#0c1220;color:#cbd5e1;font-size:13px}
    .topbar-inner{min-height:36px;display:flex;justify-content:space-between;align-items:center;gap:20px}
    .topbar-info{display:flex;gap:20px}
    .topbar a:hover{color:#fff}

    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{min-height:76px;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:10px;min-width:max-content;font-weight:800;font-size:19px}
    .logo img{width:34px;height:34px;object-fit:contain}
    .main-nav{margin-left:auto}
    .nav-list{display:flex;align-items:stretch;gap:4px;list-style:none;padding:0;margin:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:6px;padding:27px 13px;font-size:14px;font-weight:600;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--theme)}
    .has-arrow:after{content:"";width:6px;height:6px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg) translateY(-2px)}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translate(-50%,8px);width:310px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);padding:18px;opacity:0;visibility:hidden;transition:.2s;z-index:30}
    .mega-menu{width:min(720px,80vw)}
    .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;transform:translate(-50%,0)}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
    .dropdown-panel>a:not(.mega-footer){display:block;padding:9px 4px;border-bottom:1px solid #f0f1f3;font-size:14px}
    .dropdown-panel>a:hover,.mega-card:hover{color:var(--theme)}
    .mega-heading{margin:0 0 14px;font-size:16px}
    .mega-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
    .mega-card{display:flex;flex-direction:column;gap:3px;padding:12px;border:1px solid #edf0f4;border-radius:10px;background:#fbfcfe;min-width:0}
    .mega-card img{width:22px;height:22px;object-fit:contain;margin-bottom:3px}
    .mega-card strong{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .mega-card small{color:var(--muted);font-size:11px;line-height:1.5}
    .mega-footer{display:block;margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:13px;font-weight:700;color:var(--theme)}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
    .member-link,.open-link{font-size:13px;font-weight:700}
    .member-link{color:var(--theme)}
    .open-link{background:var(--theme);color:#fff;padding:9px 14px;border-radius:6px}
    .hamburger{display:none;border:0;background:transparent;padding:6px;cursor:pointer}
    .hamburger span{display:block;width:23px;height:2px;background:var(--ink);margin:4px 0;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;inset:0;background:rgba(5,12,25,.52);opacity:0;visibility:hidden;transition:.25s;z-index:40}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:-390px;width:min(390px,88vw);height:100vh;background:#fff;z-index:41;transition:.28s;overflow-y:auto;box-shadow:-20px 0 45px rgba(0,0,0,.18)}
    .mobile-drawer.open{right:0}
    .drawer-head{display:flex;align-items:center;gap:16px;padding:20px;border-bottom:1px solid var(--line);font-weight:700}
    .drawer-head>a{margin-left:auto;color:var(--theme)}
    .drawer-close{border:0;background:#f1f3f5;border-radius:50%;width:30px;height:30px;cursor:pointer;font-size:22px;line-height:1}
    .drawer-menu{padding:10px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid #edf0f2;background:transparent;text-align:left;font-weight:700;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--theme);font-size:20px}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:5px 0 8px 14px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}

    .tag-index-page{padding:72px 0 100px;min-height:620px}
    .tag-index-page .page-intro{text-align:center;max-width:720px;margin:0 auto 42px}
    .tag-index-page .eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--theme);font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase}
    .tag-index-page .eyebrow:before{content:"";width:28px;height:2px;background:var(--theme)}
    .tag-index-page h1{margin:14px 0 12px;font-size:clamp(34px,5vw,58px);line-height:1.1;letter-spacing:-.04em}
    .tag-index-page .intro-text{margin:0;color:var(--muted);font-size:16px}
    .tag-index-page .tag-panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:34px;box-shadow:var(--shadow)}
    .tag-index-page .tag-cloud{display:flex;align-items:center;justify-content:center;gap:12px 14px;flex-wrap:wrap;min-height:260px}
    .tag-index-page .tag-item{display:inline-flex;align-items:center;gap:7px;border:1px solid #d9e1ee;border-radius:999px;padding:10px 16px;background:#fff;color:#24344d;transition:.2s}
    .tag-index-page .tag-item:nth-child(3n){font-size:20px}
    .tag-index-page .tag-item:nth-child(4n){font-size:14px;padding:8px 13px}
    .tag-index-page .tag-item:nth-child(5n){background:#eef4ff;color:var(--theme);font-weight:700}
    .tag-index-page .tag-item:hover{background:var(--theme);border-color:var(--theme);color:#fff;transform:translateY(-3px)}
    .tag-index-page .tag-count{font-size:11px;opacity:.65}
    .tag-index-page .tag-note{text-align:center;margin:25px 0 0;color:var(--muted);font-size:13px}

    .footer{background:#101722;color:#cbd5e1;padding:54px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:38px}
    .footer-brand{color:#fff;font-size:20px;font-weight:800;margin-bottom:12px}
    .footer p{margin:7px 0;color:#9aa8bb;font-size:13px}
    .footer h3{color:#fff;font-size:14px;margin:0 0 15px}
    .footer-grid>div:not(:first-child) a{display:block;color:#aebbd0;font-size:13px;padding:4px 0}
    .footer-grid a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:38px;padding-top:18px;border-top:1px solid #263244;color:#8795a9;font-size:12px}

    @media(max-width:980px){
      .main-nav{display:none}
      .header-btns .member-link,.header-btns .open-link{display:none}
      .hamburger{display:block}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:620px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{padding:8px 0;align-items:flex-start}
      .topbar-info{flex-direction:column;gap:0;text-align:right}
      .header-inner{min-height:66px}
      .logo{font-size:16px}
      .tag-index-page{padding:48px 0 70px}
      .tag-index-page .tag-panel{padding:20px 14px}
      .tag-index-page .tag-cloud{gap:9px}
      .tag-index-page .tag-item{font-size:13px;padding:8px 12px}
      .tag-index-page .tag-item:nth-child(3n){font-size:17px}
      .footer-grid{grid-template-columns:1fr;gap:25px}
      .footer-bottom{flex-direction:column;gap:7px}
    }