:root{
      --theme:#0B3D91;
      --accent:#D61F69;
      --ink:#162033;
      --muted:#667085;
      --line:#E6EAF0;
      --soft:#F5F7FA;
      --white:#FFFFFF;
      --shadow:0 18px 50px rgba(15,35,70,.1);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:var(--soft);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.65}
    body.drawer-locked{overflow:hidden}
    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none}
    button{font:inherit}
    .container{width:min(1200px,calc(100% - 40px));margin:0 auto}
    .topbar{color:#DCE8FF;background:#071E43;font-size:13px}
    .topbar-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-contact{display:flex;align-items:center;gap:22px}
    .topbar-contact a:hover{color:#fff}
    .header{position:relative;z-index:50;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line)}
    .header-inner{min-height:78px;display:flex;align-items:center;gap:24px}
    .logo{display:inline-flex;align-items:center;gap:10px;flex:none;color:var(--theme);font-size:20px;font-weight:800}
    .logo img{width:42px;height:42px;object-fit:contain}
    .main-nav{align-self:stretch;display:flex;align-items:stretch;margin-left:auto}
    .nav-list{display:flex;align-items:stretch;gap:2px;margin:0;padding:0;list-style:none}
    .nav-item{position:relative;display:flex;align-items:stretch}
    .nav-link{display:flex;align-items:center;padding:0 13px;font-size:15px;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;margin-left:7px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px)}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;z-index:80;visibility:hidden;opacity:0;pointer-events:none;transform:translateY(10px);transition:.2s ease;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
    .nav-item:hover>.dropdown-panel,.nav-item:focus-within>.dropdown-panel,.nav-item:hover>.mega-menu,.nav-item:focus-within>.mega-menu{visibility:visible;opacity:1;pointer-events:auto;transform:none}
    .dropdown-panel{left:0;width:310px;padding:18px;border-radius:0 0 16px 16px}
    .dropdown-title{display:block;margin-bottom:9px;color:var(--muted);font-size:12px;font-weight:700}
    .dropdown-panel>a:not(.dropdown-main){display:block;padding:9px 0;border-bottom:1px solid #EEF1F5;font-size:14px}
    .dropdown-panel>a:hover{color:var(--theme)}
    .dropdown-main,.mega-footer{display:flex;justify-content:space-between;align-items:center;margin-top:12px;padding:10px 13px;color:#fff;background:var(--theme);border-radius:10px;font-size:14px;font-weight:700}
    .mega-menu{position:fixed;top:116px;left:50%;width:min(1120px,calc(100vw - 40px));padding:22px;transform:translate(-50%,10px);border-radius:0 0 18px 18px}
    .nav-item:hover>.mega-menu,.nav-item:focus-within>.mega-menu{transform:translate(-50%,0)}
    .mega-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:16px}
    .mega-head strong{font-size:19px}
    .mega-head span{color:var(--muted);font-size:13px}
    .mega-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
    .mega-card{min-width:0;padding:14px;background:#F7F9FC;border:1px solid #EBEEF3;border-radius:13px;transition:.2s ease}
    .mega-card:hover{border-color:#B9C9E6;transform:translateY(-2px)}
    .mega-card-top{display:flex;align-items:center;gap:10px;min-width:0}
    .mega-card-top img{width:40px;height:40px;flex:none;object-fit:contain;border-radius:9px;background:#fff}
    .mega-card strong{display:block;overflow:hidden;font-size:14px;text-overflow:ellipsis;white-space:nowrap}
    .mega-card p,.mega-video-copy p{display:-webkit-box;overflow:hidden;margin:8px 0 0;color:var(--muted);font-size:12px;-webkit-box-orient:vertical;-webkit-line-clamp:2}
    .mega-rating,.mega-video-duration{display:block;color:var(--accent);font-size:12px}
    .mega-meta{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px;color:var(--muted);font-size:11px}
    .mega-categories{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:15px}
    .mega-categories a{padding:6px 11px;color:var(--theme);background:#EDF3FF;border-radius:999px;font-size:12px}
    .mega-video-card{display:grid;grid-template-columns:88px minmax(0,1fr);gap:11px}
    .mega-video-card>img{width:88px;height:62px;object-fit:cover;border-radius:8px}
    .mega-video-copy{min-width:0}
    .mega-footer{justify-content:center;margin-top:16px}
    .header-btns{display:flex;align-items:center;gap:9px;flex:none}
    .member-entry a,.member-entry button,.account-entry{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 14px;border-radius:10px;font-size:14px;font-weight:700}
    .member-entry a,.member-entry button{color:var(--theme);background:#EDF3FF;border:0}
    .account-entry{color:#fff;background:var(--theme)}
    .hamburger{display:none;width:42px;height:42px;padding:9px;border:0;border-radius:10px;background:#EDF3FF;cursor:pointer}
    .hamburger span{display:block;width:100%;height:2px;margin:5px 0;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;z-index:90;visibility:hidden;opacity:0;background:rgba(5,15,30,.55);transition:.25s}
    .drawer-overlay.open{visibility:visible;opacity:1}
    .mobile-drawer{position:fixed;top:0;right:0;z-index:100;width:min(390px,90vw);height:100dvh;overflow-y:auto;transform:translateX(102%);background:#fff;box-shadow:-20px 0 60px rgba(0,0,0,.18);transition:.25s}
    .mobile-drawer.open{transform:none}
    .drawer-head{display:flex;align-items:center;gap:9px;min-height:72px;padding:14px 18px;border-bottom:1px solid var(--line)}
    .drawer-head>a{padding:8px 13px;color:#fff;background:var(--theme);border-radius:9px;font-weight:700}
    .drawer-close{margin-left:auto;width:40px;height:40px;color:var(--ink);background:#F0F3F7;border:0;border-radius:10px;font-size:27px;cursor:pointer}
    .drawer-menu{padding:10px 18px 28px}
    .drawer-link,.drawer-toggle{display:flex;width:100%;align-items:center;justify-content:space-between;padding:14px 4px;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;font-weight:750;cursor:pointer}
    .drawer-toggle:after{content:"+";font-size:20px;font-weight:400}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:7px 0 10px 14px;border-bottom:1px solid var(--line)}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px;color:var(--muted);font-size:14px}
    .tag-index-page{min-height:620px}
    .tag-index-page .tag-hero{position:relative;overflow:hidden;padding:74px 0 62px;color:#fff;background:linear-gradient(135deg,#071F49 0%,var(--theme) 62%,#D61F69 145%)}
    .tag-index-page .tag-hero:before,.tag-index-page .tag-hero:after{content:"";position:absolute;border:1px solid rgba(255,255,255,.13);border-radius:50%}
    .tag-index-page .tag-hero:before{right:-100px;top:-210px;width:500px;height:500px}
    .tag-index-page .tag-hero:after{right:150px;bottom:-260px;width:420px;height:420px}
    .tag-index-page .crumbs{position:relative;z-index:1;margin-bottom:20px;color:#D8E5FF;font-size:13px}
    .tag-index-page .crumbs a:hover{color:#fff}
    .tag-index-page .tag-hero h1{position:relative;z-index:1;max-width:760px;margin:0 0 15px;font-size:clamp(34px,5vw,58px);line-height:1.15}
    .tag-index-page .tag-hero p{position:relative;z-index:1;max-width:720px;margin:0;color:#DDE8FB;font-size:17px}
    .tag-index-page .tag-section{padding:62px 0 78px}
    .tag-index-page .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:25px}
    .tag-index-page .eyebrow{display:block;margin-bottom:5px;color:var(--accent);font-size:13px;font-weight:800;letter-spacing:.08em}
    .tag-index-page .section-head h2{margin:0;font-size:30px}
    .tag-index-page .section-head p{max-width:520px;margin:0;color:var(--muted)}
    .tag-index-page .tag-cloud{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:14px;min-height:320px;padding:40px;background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}
    .tag-index-page .tag-item{display:inline-flex;align-items:center;gap:8px;padding:11px 17px;color:#26344D;background:#F3F6FA;border:1px solid #E4E9F1;border-radius:999px;font-weight:700;transition:.2s ease}
    .tag-index-page .tag-item:nth-child(3n+1){font-size:19px}
    .tag-index-page .tag-item:nth-child(4n+2){color:var(--theme);background:#EBF2FF}
    .tag-index-page .tag-item:nth-child(5n+3){color:#A20F50;background:#FFF0F6}
    .tag-index-page .tag-item:hover{color:#fff;background:var(--accent);border-color:var(--accent);transform:translateY(-3px);box-shadow:0 10px 24px rgba(214,31,105,.2)}
    .tag-index-page .tag-note{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:22px}
    .tag-index-page .note-card{padding:22px;background:#fff;border:1px solid var(--line);border-radius:16px}
    .tag-index-page .note-card strong{display:block;margin-bottom:6px;color:var(--theme)}
    .tag-index-page .note-card p{margin:0;color:var(--muted);font-size:14px}
    .footer{color:#CBD5E5;background:#08172F}
    .footer-main{display:grid;grid-template-columns:1.4fr .8fr .8fr 1.1fr;gap:42px;padding-top:55px;padding-bottom:45px}
    .footer .logo{color:#fff}
    .footer-brand p{max-width:390px;color:#9EADC4;font-size:14px}
    .footer-social{display:flex;flex-wrap:wrap;gap:14px;margin-top:18px}
    .footer-social a{color:#fff;font-size:13px}
    .footer h2{margin:4px 0 17px;color:#fff;font-size:16px}
    .footer-links,.footer-contact{display:flex;flex-direction:column;gap:10px;color:#AAB7CA;font-size:14px}
    .footer a:hover{color:#fff}
    .footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:20px;padding-bottom:20px;border-top:1px solid rgba(255,255,255,.1);color:#8999B0;font-size:13px}
    .footer-bottom-links{display:flex;gap:18px}
    @media(max-width:1120px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{min-height:70px}
      .header-btns{margin-left:auto}
      .footer-main{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:700px){
      .container{width:min(100% - 28px,1200px)}
      .topbar-welcome{display:none}
      .topbar-inner{justify-content:center}
      .topbar-contact{width:100%;justify-content:space-between;gap:8px;font-size:12px}
      .logo span{font-size:17px}
      .logo img{width:36px;height:36px}
      .header-btns .member-entry,.account-entry{display:none}
      .tag-index-page .tag-hero{padding:52px 0 46px}
      .tag-index-page .tag-hero p{font-size:15px}
      .tag-index-page .tag-section{padding:42px 0 54px}
      .tag-index-page .section-head{display:block}
      .tag-index-page .section-head p{margin-top:8px}
      .tag-index-page .tag-cloud{justify-content:flex-start;min-height:0;padding:22px 16px;gap:10px}
      .tag-index-page .tag-item,.tag-index-page .tag-item:nth-child(3n+1){padding:9px 13px;font-size:14px}
      .tag-index-page .tag-note{grid-template-columns:1fr}
      .footer-main{grid-template-columns:1fr;gap:28px;padding-top:42px}
      .footer-bottom{align-items:flex-start;flex-direction:column}
    }