:root{
      --theme:#0B3D91;
      --theme-dark:#06285f;
      --ink:#172033;
      --muted:#687386;
      --line:#e5eaf1;
      --soft:#f4f7fb;
      --white:#fff;
      --shadow:0 18px 45px rgba(17,40,80,.10);
      --radius:18px;
    }
    *{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:auto}
    .topbar{background:#071a3c;color:#dce8ff;font-size:13px}
    .topbar-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-contact{display:flex;gap:22px}
    .topbar a:hover{color:#fff}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{height:78px;display:flex;align-items:center;gap:30px}
    .logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;white-space:nowrap;color:var(--theme)}
    .logo img{width:36px;height:36px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:stretch;justify-content:center;gap:4px;list-style:none;padding:0;margin:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;height:78px;padding:0 15px;font-size:15px;font-weight:600;white-space:nowrap}
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .has-arrow:after{content:"";width:6px;height:6px;margin-left:8px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg) translateY(-2px)}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translateX(-50%) translateY(8px);opacity:0;visibility:hidden;pointer-events:none;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);transition:.22s ease;z-index:30}
    .dropdown-panel{width:260px;padding:12px;border-radius:0 0 14px 14px}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;top:-12px;left:0;right:0;height:12px}
    .dropdown-panel a{display:block;padding:9px 12px;border-radius:8px;font-size:14px}
    .dropdown-panel a:hover{background:var(--soft);color:var(--theme)}
    .dropdown-footer,.mega-footer{margin-top:8px!important;border-top:1px solid var(--line);color:var(--theme);font-weight:700}
    .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:translateX(-50%) translateY(0)}
    .mega-menu{width:min(920px,calc(100vw - 30px));padding:22px;border-radius:0 0 18px 18px}
    .mega-title-row{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-bottom:16px}
    .mega-title-row strong{font-size:17px;color:var(--theme-dark)}
    .mega-title-row span{font-size:13px;color:var(--muted)}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mega-card{display:block;padding:13px;border:1px solid var(--line);border-radius:12px;background:#fff;transition:.2s}
    .mega-card:hover{border-color:#9bb7e5;box-shadow:0 8px 20px rgba(11,61,145,.08);transform:translateY(-2px)}
    .mega-card-head{display:flex;align-items:center;gap:9px}
    .mega-card-head img{width:30px;height:30px;object-fit:contain;border-radius:7px}
    .mega-card strong{display:block;font-size:14px}
    .mega-card p{margin:7px 0 0;color:var(--muted);font-size:12px;line-height:1.5}
    .mega-card>img{width:100%;height:70px;object-fit:cover;border-radius:8px;margin-bottom:7px}
    .rating{display:block;color:#d08a20;font-size:11px}
    .mega-meta{display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:11px;margin-top:9px}
    .category-links{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
    .category-links a{padding:5px 10px;border-radius:99px;background:var(--soft);color:var(--theme);font-size:12px}
    .mega-footer{display:block;padding:10px 0 0;font-size:13px}
    .header-btns{display:flex;align-items:center;gap:12px;white-space:nowrap}
    .member-entry{color:var(--theme);font-size:14px;font-weight:700}
    .account-entry{padding:8px 15px;border-radius:8px;background:var(--theme);color:#fff;font-size:13px}
    .account-entry:hover{background:var(--theme-dark)}
    .hamburger{display:none;border:0;background:transparent;width:40px;height:40px;padding:8px;cursor:pointer}
    .hamburger span{display:block;height:2px;background:var(--ink);margin:5px 0;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(3,13,31,.52);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;z-index:50;transform:translateX(100%);transition:.3s;overflow:auto;box-shadow:-12px 0 35px rgba(0,0,0,.18)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:14px;padding:20px;border-bottom:1px solid var(--line);color:var(--theme);font-weight:700}
    .drawer-head>a{margin-left:auto;padding:6px 12px;background:var(--theme);color:#fff;border-radius:7px;font-size:13px}
    .drawer-close{border:0;background:none;font-size:28px;line-height:1;color:var(--muted);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:var(--ink);font-size:15px;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--theme);font-size:20px}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{max-height:0;overflow:hidden;transition:max-height .25s;background:var(--soft);border-radius:8px}
    .drawer-submenu.open{max-height:800px;margin:4px 0 8px;padding:5px 12px}
    .drawer-submenu a{display:block;padding:7px 0;color:var(--muted);font-size:13px}
    .footer{margin-top:70px;background:#081a38;color:#c8d5eb}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px;padding:52px 0 40px}
    .footer .logo{color:#fff}
    .footer h3{margin:0 0 15px;color:#fff;font-size:15px}
    .footer p{font-size:13px;color:#aebdd3;max-width:330px}
    .footer-links{display:grid;gap:7px;font-size:13px}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-contact{display:grid;gap:8px;font-size:13px}
    .social-entry{color:#8eb4f3}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.12);padding:18px 0;font-size:12px;color:#93a5c0}
    .risk-note{max-width:620px;text-align:right}
    .tools-page{background:#f5f8fc;padding-bottom:1px}
    .tools-hero{padding:72px 0 52px;background:linear-gradient(135deg,#071a3c 0%,#0B3D91 58%,#3577c9 100%);color:#fff}
    .tools-hero .eyebrow{display:inline-flex;padding:5px 12px;border:1px solid rgba(255,255,255,.35);border-radius:99px;color:#d8e7ff;font-size:13px}
    .tools-hero h1{margin:18px 0 12px;font-size:clamp(32px,5vw,58px);line-height:1.16;letter-spacing:-1px}
    .tools-hero p{max-width:650px;margin:0;color:#dce8fa;font-size:16px}
    .tool-filter{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
    .tool-filter a{padding:8px 15px;border-radius:99px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.23);font-size:13px}
    .tool-filter a:hover{background:#fff;color:var(--theme)}
    .tools-content{padding:45px 0}
    .section-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:22px}
    .section-heading h2{margin:0;font-size:27px;color:var(--theme-dark)}
    .section-heading p{margin:0;color:var(--muted);font-size:14px}
    .tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .tool-card{display:flex;flex-direction:column;min-height:245px;padding:23px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 7px 20px rgba(22,50,90,.04);transition:.22s}
    .tool-card:hover{transform:translateY(-5px);border-color:#a8c2ea;box-shadow:var(--shadow)}
    .tool-icon{width:52px;height:52px;padding:9px;object-fit:contain;border-radius:14px;background:#eaf1fc;margin-bottom:17px}
    .tool-card h3{margin:0 0 8px;font-size:18px;color:var(--theme-dark)}
    .tool-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .tool-card-footer{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:auto;padding-top:18px;color:var(--muted);font-size:12px}
    .tool-enter{color:var(--theme);font-weight:700}
    .tool-enter:after{content:" →"}
    .tools-note{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:42px}
    .note-card{padding:23px;background:#fff;border-radius:var(--radius);border:1px solid var(--line)}
    .note-card h3{margin:0 0 8px;color:var(--theme-dark);font-size:18px}
    .note-card p{margin:0;color:var(--muted);font-size:14px}
    @media(max-width:1050px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{justify-content:space-between}
      .header-btns{margin-left:auto}
      .tools-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:640px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{align-items:flex-start;flex-direction:column;gap:2px;padding:8px 0}
      .topbar-contact{gap:12px;flex-wrap:wrap}
      .header-inner{height:68px;gap:10px}
      .logo{font-size:16px}
      .logo img{width:31px;height:31px}
      .member-entry{display:none}
      .tools-hero{padding:48px 0 40px}
      .tools-hero h1{font-size:36px}
      .tools-hero p{font-size:14px}
      .tools-content{padding:34px 0}
      .section-heading{display:block}
      .section-heading h2{font-size:23px;margin-bottom:5px}
      .tools-grid,.tools-note{grid-template-columns:1fr}
      .tool-card{min-height:215px}
      .footer-grid{grid-template-columns:1fr;gap:26px;padding:38px 0 28px}
      .footer-bottom{display:block}
      .risk-note{text-align:left;margin-top:8px}
    }