:root{
      --theme:#0B3D91;
      --ink:#17233d;
      --muted:#66738a;
      --line:#dfe6f0;
      --soft:#f4f7fb;
      --white:#fff;
      --shadow:0 16px 44px rgba(16,45,92,.10);
      --radius:16px;
    }
    *{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:1.65}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:#f3f6fa;border-bottom:1px solid #e5eaf1;color:#66738a;font-size:13px}
    .topbar .container{height:38px;display:flex;align-items:center;justify-content:space-between}
    .topbar-links{display:flex;gap:20px}
    .topbar a:hover{color:var(--theme)}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{height:78px;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:10px;min-width:190px;color:var(--theme);font-weight:800;font-size:19px;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:4px;padding:0;margin:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:5px;padding:27px 14px;font-size:14px;font-weight:600;white-space:nowrap}
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .has-arrow:after{content:"⌄";font-size:13px;color:#8d9ab0}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%);width:320px;padding:20px;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;z-index:30}
    .mega-menu{width:700px}
    .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}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-10px;height:10px}
    .panel-title{margin:0 0 12px;font-size:15px;color:var(--theme)}
    .panel-list{display:grid;gap:8px}
    .panel-list a{display:flex;justify-content:space-between;padding:7px 0;border-bottom:1px solid #edf1f6;font-size:13px}
    .panel-list a:hover,.mega-card:hover{color:var(--theme)}
    .panel-list small{color:var(--muted);margin-left:10px}
    .mega-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:26px}
    .mega-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}
    .mega-card{display:grid;gap:3px;padding:11px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe}
    .mega-card strong{font-size:13px}
    .mega-card small{font-size:11px;color:var(--muted)}
    .mega-card img{width:24px;height:24px;object-fit:contain}
    .mega-footer{display:inline-block;margin-top:15px;color:var(--theme);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:9px;white-space:nowrap}
    .member-btn,.open-btn{padding:9px 14px;border-radius:8px;font-size:13px}
    .member-btn{color:var(--theme);border:1px solid #cbd8ed}
    .open-btn{color:#fff;background:var(--theme)}
    .hamburger{display:none;width:42px;height:40px;border:1px solid var(--line);border-radius:8px;background:#fff;padding:8px;cursor:pointer}
    .hamburger span{display:block;width:23px;height:2px;margin:5px auto;background:var(--theme);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;background:rgba(12,27,53,.45);opacity:0;visibility:hidden;transition:.25s;z-index:40}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;right:0;top:0;bottom:0;width:min(390px,88vw);background:#fff;transform:translateX(100%);transition:.25s;z-index:50;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{height:70px;display:flex;align-items:center;gap:13px;padding:0 20px;border-bottom:1px solid var(--line);color:var(--theme);font-weight:700}
    .drawer-head span{flex:1}
    .drawer-head a{font-size:13px;background:var(--theme);color:#fff;padding:7px 12px;border-radius:7px}
    .drawer-close{border:0;background:none;color:#66738a;font-size:28px;cursor:pointer}
    .drawer-menu{padding:14px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf1f6;background:none;text-align:left;color:var(--ink);font-size:15px;cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:#8290a6}
    .drawer-toggle.active:after{content:"－"}
    .drawer-submenu{display:none;padding:4px 0 8px 15px;border-bottom:1px solid #edf1f6}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:13px}
    .footer{margin-top:70px;background:#101d35;color:#c1ccdc;padding:52px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
    .footer strong{color:#fff;font-size:20px}
    .footer h3{margin:0 0 14px;color:#fff;font-size:15px}
    .footer p{margin:12px 0;color:#aab8ca;font-size:13px}
    .footer-grid>div:not(.footer-brand) a{display:block;margin:8px 0;color:#c1ccdc;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,.12);color:#8e9db2;font-size:12px}
    .tag-index-page{padding:72px 0 30px;background:linear-gradient(180deg,#f7faff 0,#fff 420px)}
    .tag-index-page .page-heading{text-align:center;max-width:680px;margin:0 auto 38px}
    .tag-index-page .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--theme);font-size:13px;font-weight:700;letter-spacing:.08em}
    .tag-index-page .eyebrow:before{content:"";width:24px;height:2px;background:var(--theme)}
    .tag-index-page h1{margin:13px 0 10px;font-size:clamp(30px,5vw,52px);line-height:1.2;color:#152c55}
    .tag-index-page .lead{margin:0;color:var(--muted);font-size:16px}
    .tag-board{position:relative;max-width:1040px;margin:auto;padding:38px;border:1px solid #dce6f4;border-radius:24px;background:#fff;box-shadow:var(--shadow);overflow:hidden}
    .tag-board:before{content:"";position:absolute;width:280px;height:280px;right:-100px;top:-130px;border-radius:50%;background:#e8f0fc}
    .tag-board:after{content:"";position:absolute;width:180px;height:180px;left:-80px;bottom:-100px;border-radius:50%;border:28px solid #edf3fc}
    .tag-board-head{position:relative;z-index:1;display:flex;align-items:end;justify-content:space-between;padding-bottom:22px;border-bottom:1px solid var(--line)}
    .tag-board-head h2{margin:0;font-size:21px;color:#203b6d}
    .tag-board-head p{margin:0;color:var(--muted);font-size:13px}
    .tag-cloud{position:relative;z-index:1;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:14px 16px;padding:42px 20px 28px}
    .tag-cloud a{display:inline-flex;align-items:center;gap:7px;padding:10px 16px;border:1px solid #d6e1f1;border-radius:999px;background:#fbfdff;color:#35557f;transition:.2s}
    .tag-cloud a:nth-child(3n){font-size:20px;font-weight:700;color:#0B3D91;background:#eef4ff}
    .tag-cloud a:nth-child(3n+1){font-size:15px}
    .tag-cloud a:nth-child(3n+2){font-size:17px}
    .tag-cloud a:hover{transform:translateY(-3px);border-color:var(--theme);color:#fff;background:var(--theme);box-shadow:0 8px 18px rgba(11,61,145,.2)}
    .tag-cloud small{font-size:11px;color:#91a0b5}
    .tag-cloud a:hover small{color:#dce8ff}
    .tag-index-note{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:21px 24px;border-radius:14px;background:#f4f7fb;color:#52647e;font-size:14px}
    .tag-index-note strong{display:block;margin-bottom:3px;color:#203b6d}
    .tag-index-note a{flex:none;padding:10px 16px;border-radius:8px;background:var(--theme);color:#fff;font-size:13px;font-weight:700}
    @media(max-width:1000px){
      .header-inner{gap:16px}.main-nav{display:none}.header-btns{margin-left:auto}.hamburger{display:block}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:640px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{height:auto;min-height:38px;padding:8px 0;align-items:flex-start;gap:8px}
      .topbar-links{flex-direction:column;gap:0;text-align:right}
      .logo{min-width:0;font-size:16px}.logo img{width:29px;height:29px}
      .member-btn{display:none}.open-btn{padding:8px 10px;font-size:12px}
      .tag-index-page{padding-top:48px}.tag-board{padding:22px 16px;border-radius:17px}
      .tag-board-head{display:block}.tag-board-head p{margin-top:6px}
      .tag-cloud{padding:30px 2px 20px;gap:10px}
      .tag-cloud a{padding:8px 12px}
      .tag-index-note{display:block;padding:18px}.tag-index-note a{display:inline-block;margin-top:15px}
      .footer-grid{grid-template-columns:1fr;gap:25px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}
    }