:root{
  --theme:#0B3D91;
  --ink:#172235;
  --muted:#667085;
  --line:#dfe5ee;
  --soft:#f4f7fb;
  --white:#fff;
  --shadow:0 18px 50px rgba(24,48,88,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:#f8fafc;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}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}


.topbar{background:#10233f;color:#dbe7f7;font-size:13px}
.topbar .container{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.topbar a{color:#edf4ff;margin-left:20px}
.topbar a:hover{color:#8db8ff}


.header{position:relative;z-index:30;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);box-shadow:0 4px 18px rgba(19,41,75,.05)}
.header-inner{min-height:78px;display:flex;align-items:center;gap:30px}
.logo{display:flex;align-items:center;gap:11px;min-width:190px;font-weight:800;font-size:19px;color:#122746}
.logo img{width:38px;height:38px;object-fit:contain;border-radius:9px}
.main-nav{flex:1}
.nav-list{display:flex;align-items:stretch;justify-content:center;gap:3px;list-style:none;padding:0;margin:0}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;min-height:78px;padding:0 14px;font-size:14px;font-weight:700;color:#263752;white-space:nowrap}
.nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme);background:#f4f7fc}
.has-arrow:after{content:"";width:6px;height:6px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg);margin:0 0 4px 8px}
.dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translateX(-50%);opacity:0;visibility:hidden;pointer-events:none;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);transition:.2s ease;z-index:50}
.dropdown-panel{width:270px;padding:12px;border-radius:0 0 12px 12px}
.dropdown-panel a{display:block;padding:10px 12px;border-radius:8px;font-size:14px}
.dropdown-panel a:hover{background:var(--soft);color:var(--theme)}
.mega-menu{width:760px;padding:20px;border-radius:0 0 16px 16px}
.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}
.mega-menu:before,.dropdown-panel:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.mega-card{display:block;padding:12px;border:1px solid #e7edf5;border-radius:10px;background:#fff;transition:.2s}
.mega-card:hover{border-color:#aac2e8;transform:translateY(-2px)}
.mega-card img{width:36px;height:36px;object-fit:contain;margin-bottom:7px;border-radius:7px}
.mega-card strong{display:block;font-size:13px;line-height:1.4}
.mega-card small{display:block;color:var(--muted);font-size:11px;line-height:1.55;margin-top:4px}
.mega-footer{display:inline-block;margin-top:15px;color:var(--theme);font-size:13px;font-weight:700;margin-right:18px}
.mega-footer:hover{text-decoration:underline}
.product-menu{width:700px}
.header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
.member-entry{font-size:13px;color:var(--theme);font-weight:700}
.open-account{padding:9px 15px;color:#fff;background:var(--theme);border-radius:8px;font-size:13px;font-weight:700}
.open-account:hover{background:#082e70}
.hamburger{display:none;border:0;background:transparent;padding:8px;cursor:pointer}
.hamburger span{display:block;width:23px;height:2px;background:#263752;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(9,22,42,.45);opacity:0;visibility:hidden;transition:.2s;z-index:80}
.drawer-overlay.open{opacity:1;visibility:visible}
.mobile-drawer{position:fixed;top:0;right:-360px;width:min(360px,88vw);height:100vh;background:#fff;z-index:90;transition:.25s ease;box-shadow:-12px 0 32px rgba(0,0,0,.15);overflow:auto}
.mobile-drawer.open{right:0}
.drawer-head{height:72px;padding:0 20px;display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--line);font-weight:800}
.drawer-head>a{margin-left:auto;color:var(--theme);font-size:14px}
.drawer-close{border:0;background:transparent;font-size:30px;color:#667085;cursor:pointer;line-height:1}
.drawer-menu{padding:14px 20px 35px}
.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf0f5;background:transparent;text-align:left;font:inherit;color:var(--ink);cursor:pointer}
.drawer-toggle{font-weight:700;position:relative}
.drawer-toggle:after{content:"+";position:absolute;right:3px;color:var(--theme);font-size:20px}
.drawer-toggle.active:after{content:"−"}
.drawer-submenu{display:none;padding:4px 0 8px 13px}
.drawer-submenu.open{display:block}
.drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}


.tag-index-page{padding:0 0 80px}
.tag-index-hero{padding:76px 0 62px;background:linear-gradient(135deg,#eef4fc 0%,#fff 58%,#edf3fb 100%);border-bottom:1px solid #e2e9f3;text-align:center}
.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:22px;height:2px;background:var(--theme)}
.tag-index-hero h1{margin:15px 0 10px;font-size:clamp(32px,5vw,56px);line-height:1.18;letter-spacing:-.04em;color:#142b4d}
.tag-index-hero p{max-width:650px;margin:0 auto;color:var(--muted);font-size:16px}
.tag-index-content{padding-top:48px}
.section-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:22px}
.section-heading h2{margin:0;font-size:24px;color:#172d4d}
.section-heading p{margin:0;color:var(--muted);font-size:14px}
.tag-cloud-panel{padding:30px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow)}
.tag-cloud{display:flex;flex-wrap:wrap;align-items:center;gap:13px}
.tag-cloud a{display:inline-flex;align-items:center;gap:7px;padding:10px 16px;border:1px solid #d7e1ef;border-radius:999px;background:#f8fbff;color:#294568;font-size:14px;transition:.2s}
.tag-cloud a:nth-child(4n+1){font-size:17px;color:var(--theme);background:#edf4ff}
.tag-cloud a:nth-child(5n+2){font-size:15px}
.tag-cloud a:hover{color:#fff;background:var(--theme);border-color:var(--theme);transform:translateY(-2px);box-shadow:0 8px 18px rgba(11,61,145,.18)}
.tag-count{font-size:11px;color:#8190a5}
.tag-guide{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:32px}
.guide-card{padding:23px;border-radius:15px;background:#fff;border:1px solid var(--line)}
.guide-card strong{display:block;margin-bottom:7px;color:#1b365d;font-size:16px}
.guide-card p{margin:0;color:var(--muted);font-size:14px}
.guide-icon{display:grid;place-items:center;width:38px;height:38px;margin-bottom:14px;border-radius:11px;background:#eaf2ff;color:var(--theme);font-weight:800}
.tag-index-cta{margin-top:35px;padding:28px 32px;display:flex;justify-content:space-between;align-items:center;gap:20px;background:#122d51;border-radius:16px;color:#fff}
.tag-index-cta h2{margin:0 0 4px;font-size:21px}
.tag-index-cta p{margin:0;color:#c6d6eb;font-size:14px}
.cta-link{padding:11px 20px;border-radius:8px;background:#fff;color:var(--theme);font-weight:800;font-size:14px;white-space:nowrap}


.footer{background:#101e34;color:#c8d4e5;padding:55px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:35px}
.footer h3,.footer h4{margin:0 0 15px;color:#fff}
.footer h3{font-size:20px}
.footer h4{font-size:15px}
.footer p{margin:7px 0;color:#aebed3;font-size:13px}
.footer-grid>div>a{display:block;margin:7px 0;color:#b9c9dc;font-size:13px}
.footer-grid>div>a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:36px;padding-top:18px;border-top:1px solid rgba(255,255,255,.13);font-size:12px;color:#91a4bd}


@media (max-width:1050px){
  .nav-link{padding:0 9px;font-size:13px}
  .logo{min-width:160px}
}
@media (max-width:820px){
  .container{width:min(100% - 30px,600px)}
  .topbar .container{min-height:46px;align-items:flex-start;flex-direction:column;justify-content:center;gap:0;font-size:11px}
  .topbar a{margin-left:12px}
  .main-nav{display:none}
  .header-inner{min-height:68px;justify-content:space-between}
  .header-btns{margin-left:auto}
  .member-entry,.open-account{display:none}
  .hamburger{display:block}
  .tag-index-hero{padding:56px 0 45px}
  .tag-index-content{padding-top:32px}
  .tag-cloud-panel{padding:22px 17px}
  .tag-guide{grid-template-columns:1fr}
  .tag-index-cta{align-items:flex-start;flex-direction:column;padding:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px 18px}
  .footer-bottom{flex-direction:column;gap:5px}
}
@media (max-width:520px){
  .section-heading{display:block}
  .section-heading p{margin-top:5px}
  .tag-cloud{gap:9px}
  .tag-cloud a{padding:8px 12px;font-size:13px}
  .tag-cloud a:nth-child(4n+1){font-size:15px}
  .footer-grid{grid-template-columns:1fr}
}