:root{
      --theme:#0B3D91;
      --deep:#071A33;
      --ink:#14243A;
      --muted:#63738A;
      --line:#DCE7F1;
      --soft:#F3F8FC;
      --white:#fff;
      --cyan:#0891B2;
      --shadow:0 18px 50px rgba(7,26,51,.10);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#fff;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC","PingFang TC",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:var(--deep);color:#D9E7F5;font-size:13px}
    .topbar .container{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-links{display:flex;align-items:center;gap:22px}
    .topbar a{color:#D9E7F5;transition:color .2s}
    .topbar a:hover{color:#7DD3FC}

    .header{position:relative;z-index:30;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}
    .header-inner{min-height:78px;display:flex;align-items:center;gap:28px}
    .logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;font-weight:800;color:var(--deep);letter-spacing:.02em}
    .logo img{width:38px;height:38px;object-fit:contain;border-radius:10px}
    .logo span{font-size:18px;white-space:nowrap}
    .main-nav{margin-left:auto}
    .nav-list{display:flex;align-items:stretch;gap:4px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:6px;min-height:78px;padding:0 13px;color:#33465E;font-size:14px;font-weight:650;white-space:nowrap}
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .has-arrow:after{content:"";width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px)}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translate(-50%,8px);width:300px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,transform .2s,visibility .2s}
    .mega-menu{width:620px}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;top:-10px;left:0;right:0;height:10px}
    .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:translate(-50%,0)}
    .dropdown-panel>a:not(.mega-footer){display:block;padding:9px 10px;border-bottom:1px solid #EDF2F7;color:#3B5068;font-size:14px}
    .dropdown-panel>a:hover{color:var(--theme);background:var(--soft)}
    .mega-title{margin:0 0 12px;color:var(--deep);font-size:13px;font-weight:800;letter-spacing:.08em}
    .mega-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
    .mega-card{display:flex;flex-direction:column;gap:3px;min-height:75px;padding:11px;border:1px solid var(--line);border-radius:12px;background:#FBFDFF;transition:border-color .2s,background .2s,transform .2s}
    .mega-card:hover{border-color:#8BC9DC;background:#F1FBFD;transform:translateY(-2px)}
    .mega-card img{width:24px;height:24px;object-fit:contain;margin-bottom:2px}
    .mega-card strong{font-size:13px;line-height:1.35;color:var(--deep)}
    .mega-card small{font-size:11px;line-height:1.45;color:var(--muted)}
    .mega-footer{display:block;margin-top:14px;padding-top:12px;border-top:1px solid var(--line);color:var(--theme);font-size:13px;font-weight:750}
    .header-btns{display:flex;align-items:center;gap:9px}
    .member-btn,.open-btn{border-radius:10px;padding:9px 13px;font-size:13px;font-weight:750;white-space:nowrap}
    .member-btn{color:var(--theme);border:1px solid #BFD2E5}
    .open-btn{color:#fff;background:var(--theme)}
    .member-btn:hover{background:#F0F6FC}
    .open-btn:hover{background:#082F70}
    .hamburger{display:none;width:42px;height:40px;padding:9px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer}
    .hamburger span{display:block;height:2px;margin:5px 0;background:var(--deep);transition:transform .2s,opacity .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:80;background:rgba(7,26,51,.45);opacity:0;visibility:hidden;transition:opacity .2s,visibility .2s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;z-index:90;top:0;right:0;width:min(390px,88vw);height:100dvh;background:#fff;transform:translateX(105%);transition:transform .25s ease;overflow-y:auto;box-shadow:-18px 0 45px rgba(7,26,51,.2)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:13px;padding:20px;border-bottom:1px solid var(--line);font-weight:800;color:var(--deep)}
    .drawer-head>a{margin-left:auto;padding:6px 11px;background:var(--theme);border-radius:8px;color:#fff;font-size:13px}
    .drawer-close{width:32px;height:32px;border:0;background:#EEF4F8;border-radius:50%;font-size:22px;line-height:1;cursor:pointer;color:var(--deep)}
    .drawer-menu{padding:12px 20px 34px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid #EDF2F7;background:transparent;text-align:left;color:var(--ink);font-weight:700;cursor:pointer}
    .drawer-group{border-bottom:1px solid #EDF2F7}
    .drawer-toggle{position:relative}
    .drawer-toggle:after{content:"+";position:absolute;right:3px;font-size:20px;font-weight:400;color:var(--muted)}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:0 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:76px 0 100px;background:linear-gradient(180deg,#F5FAFD 0,#fff 42%)}
    .tag-index-page .page-intro{text-align:center;max-width:740px;margin:0 auto 46px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 12px;color:var(--cyan);font-size:12px;font-weight:850;letter-spacing:.16em;text-transform:uppercase}
    .eyebrow:before{content:"";width:27px;height:2px;background:var(--cyan)}
    .tag-index-page h1{margin:0;color:var(--deep);font-size:clamp(32px,5vw,58px);line-height:1.1;letter-spacing:-.045em}
    .tag-index-page .intro-text{margin:18px auto 0;max-width:620px;color:var(--muted);font-size:16px}
    .tag-cloud-panel{position:relative;overflow:hidden;padding:42px;border:1px solid #D8E7EF;border-radius:26px;background:rgba(255,255,255,.92);box-shadow:0 24px 70px rgba(8,67,98,.09)}
    .tag-cloud-panel:before,.tag-cloud-panel:after{content:"";position:absolute;border-radius:50%;pointer-events:none}
    .tag-cloud-panel:before{width:250px;height:250px;top:-140px;right:-70px;background:rgba(8,145,178,.08)}
    .tag-cloud-panel:after{width:180px;height:180px;bottom:-100px;left:-45px;background:rgba(11,61,145,.06)}
    .tag-cloud-head{position:relative;z-index:1;display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:25px;padding-bottom:17px;border-bottom:1px solid var(--line)}
    .tag-cloud-head h2{margin:0;color:var(--deep);font-size:22px}
    .tag-cloud-head p{margin:0;color:var(--muted);font-size:13px}
    .tag-cloud{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:13px 15px;min-height:260px;padding:20px 10px}
    .tag-cloud a{display:inline-flex;align-items:center;gap:7px;padding:9px 15px;border:1px solid #CFE1EC;border-radius:999px;background:#fff;color:#31506B;font-size:var(--tag-size,15px);font-weight:650;box-shadow:0 5px 15px rgba(8,67,98,.05);transition:all .2s}
    .tag-cloud a:nth-child(3n){color:var(--theme);border-color:#AFC7E1}
    .tag-cloud a:nth-child(4n){color:#087C95;border-color:#A9DCE5}
    .tag-cloud a:hover{color:#fff;background:var(--theme);border-color:var(--theme);transform:translateY(-4px);box-shadow:0 10px 22px rgba(11,61,145,.2)}
    .tag-cloud a:after{content:"→";font-size:13px;opacity:.65}
    .tag-index-note{display:flex;align-items:center;justify-content:center;gap:9px;margin:26px auto 0;color:var(--muted);font-size:13px;text-align:center}
    .tag-index-note span{display:inline-flex;width:22px;height:22px;align-items:center;justify-content:center;border-radius:50%;background:#E4F6FA;color:#087C95;font-weight:800}
    .tag-index-cta{display:flex;justify-content:center;gap:12px;margin-top:42px}
    .tag-index-cta a{display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:0 20px;border-radius:10px;font-size:14px;font-weight:750}
    .tag-index-cta .primary{background:var(--theme);color:#fff}
    .tag-index-cta .secondary{border:1px solid #BCD0E1;color:var(--theme);background:#fff}
    .tag-index-cta a:hover{transform:translateY(-2px)}

    .footer{background:var(--deep);color:#C7D7E8;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
    .footer-brand strong{display:block;margin-bottom:12px;color:#fff;font-size:20px}
    .footer p{margin:8px 0;color:#AFC3D8;font-size:13px}
    .footer h3{margin:0 0 13px;color:#fff;font-size:14px}
    .footer-grid>div:not(.footer-brand) a,.footer-grid>div:not(.footer-brand) span{display:block;margin:7px 0;color:#AFC3D8;font-size:13px}
    .footer a:hover{color:#7DD3FC}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:42px;padding-top:18px;border-top:1px solid rgba(210,231,248,.16);color:#8FA9C2;font-size:12px}

    @media (max-width:1080px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-btns{margin-left:auto}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:680px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{min-height:46px;align-items:flex-start;justify-content:center;flex-direction:column;gap:0;padding:7px 0}
      .topbar-links{gap:14px;font-size:12px}
      .logo span{font-size:16px}
      .member-btn{display:none}
      .open-btn{padding:8px 10px;font-size:12px}
      .tag-index-page{padding:52px 0 70px}
      .tag-cloud-panel{padding:24px 16px;border-radius:20px}
      .tag-cloud-head{display:block}
      .tag-cloud-head p{margin-top:6px}
      .tag-cloud{gap:10px 8px;padding:14px 0;min-height:220px}
      .tag-cloud a{padding:8px 11px;font-size:13px!important}
      .tag-index-cta{flex-direction:column;margin-top:30px}
      .tag-index-cta a{width:100%}
      .footer-grid{grid-template-columns:1fr;gap:28px}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:7px}
    }