:root{
      --theme:#0B3D91;
      --ink:#14213d;
      --muted:#667085;
      --line:#e5eaf2;
      --soft:#f5f8fc;
      --white:#fff;
      --shadow:0 16px 44px rgba(18,48,92,.10);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#fff;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.7}
    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:#0d1d38;color:#d9e5f6;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{color:#d9e5f6}
    .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:30px}
    .logo{display:flex;align-items:center;gap:10px;min-width:190px;color:var(--theme);font-size:20px;font-weight:800}
    .logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{list-style:none;padding:0;margin:0;display:flex;align-items:center;justify-content:center;gap:4px}
    .nav-item{position:relative}
    .nav-link{display:block;padding:25px 14px;color:#29364d;font-size:15px;white-space:nowrap}
    .nav-link:hover,.nav-link:focus-visible{color:var(--theme)}
    .has-arrow:after{content:"";display:inline-block;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:100%;left:50%;width:340px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translate(-50%,8px);transition:.2s ease}
    .mega-menu{width:620px}
    .nav-item:after{content:"";position:absolute;left:0;right:0;top:100%;height:12px}
    .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)}
    .drop-title,.mega-title{margin:0 0 14px;color:var(--theme);font-size:15px;font-weight:800}
    .drop-list,.mega-links{display:grid;gap:9px}
    .drop-list a,.mega-links a{font-size:14px;color:#4b5b72}
    .drop-list a:hover,.mega-links a:hover{color:var(--theme)}
    .mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .mega-card{display:flex;gap:10px;padding:11px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe}
    .mega-card img{width:34px;height:34px;object-fit:contain;flex:none}
    .mega-card span{min-width:0;display:grid;gap:2px}
    .mega-card strong{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-card small,.mega-links small{display:block;color:var(--muted);font-size:11px;line-height:1.5}
    .mega-columns{display:grid;grid-template-columns:1fr 1fr;gap:28px}
    .mega-footer{display:block;margin-top:18px;padding-top:13px;border-top:1px solid var(--line);color:var(--theme);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:13px;white-space:nowrap}
    .member-btn{padding:8px 14px;border-radius:7px;background:var(--theme);color:#fff;font-size:13px}
    .account-link{font-size:14px;color:var(--theme);font-weight:700}
    .hamburger{display:none;width:40px;height:36px;padding:7px;border:1px solid var(--line);background:#fff;border-radius:7px;cursor:pointer}
    .hamburger span{display:block;height:2px;margin:4px 0;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;inset:0;background:rgba(5,18,40,.48);opacity:0;visibility:hidden;z-index:50;transition:.2s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;bottom:0;width:min(390px,88vw);background:#fff;z-index:60;transform:translateX(100%);transition:.25s ease;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:15px;padding:20px;border-bottom:1px solid var(--line)}
    .drawer-head strong{margin-right:auto;color:var(--theme)}
    .drawer-head a{color:var(--theme);font-weight:700}
    .drawer-close{border:0;background:transparent;font-size:28px;line-height:1;color:#68758b;cursor:pointer}
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;color:#24334d;font-size:15px;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 15px}
    .drawer-submenu.open{display:grid}
    .drawer-submenu a{padding:7px 0;color:var(--muted);font-size:14px}
    .tag-index-page{background:linear-gradient(180deg,#f6f9fe 0,#fff 420px);padding:70px 0 90px;min-height:580px}
    .tag-hero{text-align:center;max-width:760px;margin:0 auto 42px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before{content:"";width:24px;height:2px;background:var(--theme)}
    .tag-hero h1{margin:13px 0 12px;font-size:clamp(30px,5vw,52px);line-height:1.2;letter-spacing:-.04em}
    .tag-hero p{margin:0;color:var(--muted);font-size:16px}
    .tag-cloud-panel{padding:34px;border:1px solid var(--line);border-radius:20px;background:rgba(255,255,255,.94);box-shadow:var(--shadow)}
    .tag-cloud-head{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:25px;padding-bottom:18px;border-bottom:1px solid var(--line)}
    .tag-cloud-head h2{margin:0;font-size:21px}
    .tag-cloud-head span{color:var(--muted);font-size:13px}
    .tag-cloud{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:14px 16px;padding:12px 4px 18px}
    .tag-cloud a{display:inline-flex;align-items:center;gap:7px;padding:10px 17px;border:1px solid #dbe5f4;border-radius:999px;background:#f8fbff;color:#28518a;transition:.2s}
    .tag-cloud a:hover{background:var(--theme);border-color:var(--theme);color:#fff;transform:translateY(-2px)}
    .tag-cloud a:nth-child(3n){font-size:18px;font-weight:800}
    .tag-cloud a:nth-child(3n+1){font-size:15px}
    .tag-cloud a:nth-child(3n+2){font-size:13px}
    .tag-cloud a:after{content:"";width:5px;height:5px;border-radius:50%;background:currentColor;opacity:.5}
    .tag-index-note{margin:28px auto 0;max-width:700px;text-align:center;color:var(--muted);font-size:14px}
    .footer{background:#0d1d38;color:#d6e0ee;padding:54px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:35px}
    .footer-brand strong{display:block;margin-bottom:12px;color:#fff;font-size:20px}
    .footer p{margin:7px 0;color:#aabbd1;font-size:13px}
    .footer h3{margin:0 0 15px;color:#fff;font-size:15px}
    .footer-grid>div:not(.footer-brand) a{display:block;margin:7px 0;color:#b7c7da;font-size:13px}
    .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 rgba(255,255,255,.13);color:#91a6c0;font-size:12px}
    @media(max-width:1050px){
      .header-inner{gap:15px}.logo{min-width:150px}.nav-link{padding-left:8px;padding-right:8px}
      .account-link{display:none}
    }
    @media(max-width:820px){
      .topbar .container{padding:8px 0;align-items:flex-start}.topbar-links{gap:10px;flex-direction:column;text-align:right}
      .header-inner{min-height:66px}.main-nav{display:none}.hamburger{display:block}
      .mega-menu,.dropdown-panel{display:none}
      .tag-index-page{padding:52px 0 65px}.tag-cloud-panel{padding:23px 17px}
      .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
      .footer-bottom{flex-direction:column;gap:5px}
    }
    @media(max-width:520px){
      .container{width:min(100% - 28px,1180px)}
      .topbar{font-size:12px}.logo{font-size:17px}.logo img{width:32px;height:32px}.member-btn{padding:7px 9px}
      .tag-hero h1{font-size:34px}.tag-hero p{font-size:14px}.tag-cloud-head{display:block}.tag-cloud-head span{display:block;margin-top:7px}
      .tag-cloud a{padding:8px 12px}.footer-grid{grid-template-columns:1fr}
    }