:root{
      --theme:#0B3D91;
      --theme-dark:#072b68;
      --theme-soft:#eaf1ff;
      --accent:#d81b60;
      --ink:#172033;
      --muted:#667085;
      --line:#e5e9f2;
      --surface:#fff;
      --page:#f5f7fb;
      --shadow:0 18px 50px rgba(16,36,74,.10);
      --radius:20px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:var(--page);
      font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;
      line-height:1.65;
    }
    body.drawer-locked{overflow:hidden}
    img{display:block;max-width:100%}
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    .container{width:min(1200px,calc(100% - 40px));margin:0 auto}

    .topbar{
      color:#dbe7ff;
      background:#071d43;
      font-size:13px;
    }
    .topbar-inner{
      min-height:38px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .topbar-contact{display:flex;align-items:center;gap:20px}
    .topbar-contact a:hover{color:#fff}

    .header{
      position:relative;
      z-index:50;
      background:rgba(255,255,255,.98);
      border-bottom:1px solid var(--line);
      box-shadow:0 5px 20px rgba(12,31,67,.04);
    }
    .header-inner{
      min-height:82px;
      display:flex;
      align-items:center;
      gap:26px;
    }
    .logo{
      display:inline-flex;
      align-items:center;
      flex:0 0 auto;
      gap:11px;
      color:var(--theme);
      font-size:20px;
      font-weight:800;
      letter-spacing:.02em;
    }
    .logo img{
      width:42px;
      height:42px;
      object-fit:contain;
      border-radius:10px;
    }
    .main-nav{margin-left:auto;align-self:stretch}
    .nav-list{
      height:100%;
      display:flex;
      align-items:stretch;
      gap:2px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .nav-item{
      position:relative;
      display:flex;
      align-items:center;
    }
    .nav-link{
      height:100%;
      min-height:82px;
      display:flex;
      align-items:center;
      gap:6px;
      padding:0 13px;
      color:#263247;
      font-size:15px;
      font-weight:700;
      white-space:nowrap;
      transition:.2s ease;
    }
    .nav-link:hover,.nav-item:focus-within>.nav-link{
      color:var(--theme);
      background:var(--theme-soft);
    }
    .has-arrow::after{
      content:"";
      width:6px;
      height:6px;
      margin-top:-4px;
      border-right:1.5px solid currentColor;
      border-bottom:1.5px solid currentColor;
      transform:rotate(45deg);
      transition:.2s ease;
    }
    .nav-item:hover .has-arrow::after,
    .nav-item:focus-within .has-arrow::after{
      margin-top:3px;
      transform:rotate(225deg);
    }
    .dropdown-panel,.mega-menu{
      position:absolute;
      top:100%;
      visibility:hidden;
      opacity:0;
      transform:translateY(8px);
      pointer-events:none;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow);
      transition:.2s ease;
    }
    .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;
      transform:translateY(0);
      pointer-events:auto;
    }
    .dropdown-panel{
      left:0;
      width:310px;
      padding:16px;
      border-radius:0 0 16px 16px;
    }
    .dropdown-title{
      display:block;
      margin:0 8px 8px;
      color:var(--muted);
      font-size:12px;
      font-weight:700;
    }
    .dropdown-panel>a:not(.dropdown-main){
      display:block;
      padding:10px 8px;
      overflow:hidden;
      color:#344054;
      font-size:14px;
      text-overflow:ellipsis;
      white-space:nowrap;
      border-bottom:1px solid #eef1f6;
    }
    .dropdown-panel>a:not(.dropdown-main):hover{color:var(--theme)}
    .dropdown-main{
      display:flex;
      justify-content:space-between;
      margin-top:10px;
      padding:11px 12px;
      color:#fff;
      background:var(--theme);
      border-radius:10px;
      font-size:14px;
      font-weight:700;
    }
    .mega-menu{
      left:50%;
      width:min(900px,calc(100vw - 40px));
      padding:22px;
      border-radius:0 0 20px 20px;
      transform:translate(-50%,8px);
    }
    .nav-item:hover>.mega-menu,
    .nav-item:focus-within>.mega-menu{transform:translate(-50%,0)}
    .mega-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:20px;
      margin-bottom:16px;
      padding-bottom:13px;
      border-bottom:1px solid var(--line);
    }
    .mega-head strong{color:var(--theme);font-size:18px}
    .mega-head span{color:var(--muted);font-size:13px}
    .mega-categories{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-bottom:16px;
    }
    .mega-categories a{
      padding:6px 11px;
      color:var(--theme);
      background:var(--theme-soft);
      border-radius:999px;
      font-size:13px;
      font-weight:700;
    }
    .mega-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:12px;
    }
    .mega-card{
      min-width:0;
      padding:13px;
      background:#f8faff;
      border:1px solid #e8edf7;
      border-radius:13px;
      transition:.2s ease;
    }
    .mega-card:hover{
      border-color:#b7c9ec;
      background:#fff;
      transform:translateY(-2px);
      box-shadow:0 10px 26px rgba(11,61,145,.10);
    }
    .mega-card-top{display:flex;align-items:center;gap:10px;min-width:0}
    .mega-card-top img{
      width:38px;
      height:38px;
      flex:0 0 auto;
      object-fit:contain;
      background:#fff;
      border-radius:9px;
    }
    .mega-card strong{
      display:block;
      overflow:hidden;
      color:#202b3c;
      font-size:14px;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .mega-rating,.mega-meta{
      color:var(--muted);
      font-size:11px;
    }
    .mega-meta{
      display:flex;
      flex-wrap:wrap;
      gap:5px 10px;
      margin-top:9px;
    }
    .mega-card p{
      display:-webkit-box;
      margin:8px 0 0;
      overflow:hidden;
      color:var(--muted);
      font-size:12px;
      line-height:1.55;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }
    .mega-video-card{
      display:grid;
      grid-template-columns:88px minmax(0,1fr);
      gap:10px;
    }
    .mega-video-card>img{
      width:88px;
      height:62px;
      object-fit:cover;
      border-radius:9px;
    }
    .mega-video-copy{min-width:0}
    .mega-video-copy p{margin-top:4px;-webkit-line-clamp:1}
    .mega-video-duration{color:var(--accent);font-size:11px}
    .mega-footer{
      display:block;
      margin-top:16px;
      padding:10px;
      color:var(--theme);
      background:var(--theme-soft);
      border-radius:10px;
      text-align:center;
      font-size:13px;
      font-weight:800;
    }
    .header-btns{
      display:flex;
      align-items:center;
      gap:10px;
      flex:0 0 auto;
    }
    .member-entry{font-size:14px}
    .account-entry{
      padding:9px 16px;
      color:#fff;
      background:var(--theme);
      border-radius:9px;
      font-size:14px;
      font-weight:800;
    }
    .account-entry:hover{background:var(--theme-dark)}
    .hamburger{
      width:42px;
      height:42px;
      display:none;
      align-items:center;
      justify-content:center;
      flex-direction:column;
      gap:5px;
      padding:0;
      background:#fff;
      border:1px solid var(--line);
      border-radius:10px;
      cursor:pointer;
    }
    .hamburger span{
      width:20px;
      height:2px;
      background:var(--theme);
      transition:.2s ease;
    }
    .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;
      z-index:90;
      inset:0;
      visibility:hidden;
      opacity:0;
      background:rgba(4,15,35,.58);
      transition:.25s ease;
    }
    .drawer-overlay.open{visibility:visible;opacity:1}
    .mobile-drawer{
      position:fixed;
      z-index:100;
      top:0;
      right:0;
      width:min(390px,90vw);
      height:100vh;
      overflow-y:auto;
      background:#fff;
      box-shadow:-20px 0 60px rgba(0,0,0,.18);
      transform:translateX(105%);
      transition:.28s ease;
    }
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{
      position:sticky;
      z-index:2;
      top:0;
      min-height:72px;
      display:flex;
      align-items:center;
      gap:12px;
      padding:15px 20px;
      background:#fff;
      border-bottom:1px solid var(--line);
    }
    .drawer-head>a{
      padding:7px 12px;
      color:#fff;
      background:var(--theme);
      border-radius:8px;
      font-size:14px;
    }
    .drawer-close{
      width:38px;
      height:38px;
      margin-left:auto;
      color:#344054;
      background:#f2f4f7;
      border:0;
      border-radius:50%;
      font-size:25px;
      cursor:pointer;
    }
    .drawer-menu{padding:12px 20px 32px}
    .drawer-link,.drawer-toggle{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:14px 4px;
      color:#202b3c;
      background:none;
      border:0;
      border-bottom:1px solid var(--line);
      text-align:left;
      font-weight:800;
      cursor:pointer;
    }
    .drawer-toggle::after{
      content:"+";
      color:var(--theme);
      font-size:20px;
    }
    .drawer-toggle.active::after{content:"−"}
    .drawer-submenu{
      display:none;
      padding:6px 0 10px 14px;
      border-bottom:1px solid var(--line);
    }
    .drawer-submenu.open{display:block}
    .drawer-submenu a{
      display:block;
      padding:9px 0;
      color:var(--muted);
      font-size:14px;
    }

    .about-page{overflow:hidden}
    .about-page .about-hero{
      position:relative;
      padding:90px 0 78px;
      color:#fff;
      background:
        radial-gradient(circle at 12% 20%,rgba(216,27,96,.35),transparent 25%),
        radial-gradient(circle at 88% 10%,rgba(93,145,255,.28),transparent 28%),
        linear-gradient(135deg,#061c43 0%,#0B3D91 58%,#164f9f 100%);
    }
    .about-page .about-hero::after{
      content:"";
      position:absolute;
      right:-80px;
      bottom:-170px;
      width:430px;
      height:430px;
      border:1px solid rgba(255,255,255,.16);
      border-radius:50%;
      box-shadow:0 0 0 48px rgba(255,255,255,.04),0 0 0 96px rgba(255,255,255,.03);
    }
    .about-page .hero-copy{
      position:relative;
      z-index:1;
      max-width:850px;
      margin:0 auto;
      text-align:center;
    }
    .about-page .eyebrow{
      display:inline-flex;
      padding:7px 13px;
      color:#fff;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.22);
      border-radius:999px;
      font-size:13px;
      font-weight:800;
      letter-spacing:.08em;
    }
    .about-page h1{
      margin:20px 0 16px;
      font-size:clamp(36px,6vw,66px);
      line-height:1.12;
      letter-spacing:-.04em;
    }
    .about-page .hero-copy>p{
      max-width:720px;
      margin:0 auto;
      color:#dce8ff;
      font-size:18px;
    }
    .about-page .hero-points{
      display:flex;
      flex-wrap:wrap;
      justify-content:center;
      gap:10px;
      margin-top:28px;
    }
    .about-page .hero-points span{
      padding:8px 13px;
      background:rgba(255,255,255,.10);
      border-radius:999px;
      font-size:13px;
    }
    .about-page .section{padding:78px 0}
    .about-page .section-white{background:#fff}
    .about-page .section-head{
      max-width:760px;
      margin:0 auto 38px;
      text-align:center;
    }
    .about-page .section-kicker{
      color:var(--accent);
      font-size:13px;
      font-weight:900;
      letter-spacing:.12em;
    }
    .about-page .section-head h2{
      margin:9px 0 12px;
      color:#172033;
      font-size:clamp(28px,4vw,42px);
      line-height:1.2;
    }
    .about-page .section-head p{margin:0;color:var(--muted)}
    .about-page .mission-card{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:42px;
      align-items:center;
      padding:44px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:28px;
      box-shadow:var(--shadow);
    }
    .about-page .mission-copy h2{
      margin:0 0 18px;
      font-size:36px;
      line-height:1.25;
    }
    .about-page .mission-copy p{margin:0 0 15px;color:var(--muted)}
    .about-page .mission-panel{
      padding:30px;
      color:#fff;
      background:linear-gradient(145deg,var(--theme),var(--theme-dark));
      border-radius:22px;
    }
    .about-page .mission-panel strong{
      display:block;
      margin-bottom:18px;
      font-size:22px;
    }
    .about-page .mission-panel ul{margin:0;padding:0;list-style:none}
    .about-page .mission-panel li{
      position:relative;
      padding:11px 0 11px 28px;
      border-bottom:1px solid rgba(255,255,255,.14);
    }
    .about-page .mission-panel li:last-child{border-bottom:0}
    .about-page .mission-panel li::before{
      content:"✓";
      position:absolute;
      left:0;
      color:#ff87b8;
      font-weight:900;
    }
    .about-page .service-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:20px;
    }
    .about-page .service-card{
      position:relative;
      min-height:235px;
      padding:28px;
      overflow:hidden;
      background:#fff;
      border:1px solid var(--line);
      border-radius:20px;
      transition:.25s ease;
    }
    .about-page .service-card:hover{
      border-color:#bdccec;
      transform:translateY(-5px);
      box-shadow:var(--shadow);
    }
    .about-page .service-number{
      color:#cbd7ee;
      font-size:34px;
      font-weight:900;
    }
    .about-page .service-card h3{margin:15px 0 10px;font-size:21px}
    .about-page .service-card p{margin:0;color:var(--muted);font-size:14px}
    .about-page .principles{
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:16px;
    }
    .about-page .principle{
      padding:24px;
      background:var(--theme-soft);
      border-radius:18px;
    }
    .about-page .principle i{
      width:42px;
      height:42px;
      display:grid;
      place-items:center;
      color:#fff;
      background:var(--theme);
      border-radius:12px;
      font-style:normal;
      font-weight:900;
    }
    .about-page .principle h3{margin:16px 0 8px;font-size:18px}
    .about-page .principle p{margin:0;color:var(--muted);font-size:14px}
    .about-page .timeline{
      position:relative;
      max-width:900px;
      margin:0 auto;
    }
    .about-page .timeline::before{
      content:"";
      position:absolute;
      top:12px;
      bottom:12px;
      left:23px;
      width:2px;
      background:#c7d5ef;
    }
    .about-page .timeline-item{
      position:relative;
      padding:0 0 30px 70px;
    }
    .about-page .timeline-item:last-child{padding-bottom:0}
    .about-page .timeline-dot{
      position:absolute;
      left:12px;
      top:5px;
      width:24px;
      height:24px;
      background:#fff;
      border:7px solid var(--accent);
      border-radius:50%;
      box-shadow:0 0 0 7px #f9ddeb;
    }
    .about-page .timeline-card{
      padding:25px 28px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:18px;
    }
    .about-page .timeline-card span{color:var(--accent);font-size:13px;font-weight:900}
    .about-page .timeline-card h3{margin:5px 0 8px}
    .about-page .timeline-card p{margin:0;color:var(--muted)}
    .about-page .risk-box{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:36px;
      padding:40px;
      color:#fff;
      background:#172033;
      border-radius:24px;
    }
    .about-page .risk-box h2{margin:0 0 9px;font-size:29px}
    .about-page .risk-box p{max-width:760px;margin:0;color:#cbd2df}
    .about-page .risk-box a{
      flex:0 0 auto;
      padding:12px 20px;
      color:#fff;
      background:var(--accent);
      border-radius:11px;
      font-weight:800;
    }

    .footer{color:#d8e2f3;background:#07172f}
    .footer-main{
      display:grid;
      grid-template-columns:1.5fr 1fr 1fr 1.25fr;
      gap:40px;
      padding-top:60px;
      padding-bottom:42px;
    }
    .footer .logo{color:#fff}
    .footer-brand p{max-width:400px;color:#aebbd0;font-size:14px}
    .footer h2{margin:7px 0 17px;color:#fff;font-size:16px}
    .footer-social{display:flex;flex-wrap:wrap;gap:10px}
    .footer-social a{
      padding:7px 10px;
      color:#dce7fa;
      background:rgba(255,255,255,.06);
      border-radius:8px;
      font-size:13px;
    }
    .footer-links,.footer-contact{display:flex;flex-direction:column;gap:10px}
    .footer-links a,.footer-contact,.footer-contact a{
      color:#aebbd0;
      font-size:14px;
    }
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-bottom{
      min-height:66px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      color:#8fa0ba;
      border-top:1px solid rgba(255,255,255,.09);
      font-size:13px;
    }
    .footer-bottom-links{display:flex;gap:18px}
    .footer-bottom a:hover{color:#fff}

    @media (max-width:1120px){
      .main-nav{display:none}
      .hamburger{display:flex}
      .header-inner{min-height:72px}
      .header-btns{margin-left:auto}
      .footer-main{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width:800px){
      .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}
      .member-entry{display:none}
      .about-page .about-hero{padding:68px 0 60px}
      .about-page .hero-copy>p{font-size:16px}
      .about-page .section{padding:58px 0}
      .about-page .mission-card{grid-template-columns:1fr;padding:26px;gap:25px}
      .about-page .mission-copy h2{font-size:29px}
      .about-page .service-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .about-page .principles{grid-template-columns:repeat(2,minmax(0,1fr))}
      .about-page .risk-box{align-items:flex-start;flex-direction:column;padding:29px}
    }
    @media (max-width:560px){
      .topbar-contact{font-size:12px}
      .logo span{max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
      .account-entry{display:none}
      .about-page h1{font-size:38px}
      .about-page .service-grid,.about-page .principles{grid-template-columns:1fr}
      .about-page .timeline-item{padding-left:54px}
      .about-page .timeline::before{left:15px}
      .about-page .timeline-dot{left:4px}
      .about-page .timeline-card{padding:21px}
      .footer-main{grid-template-columns:1fr;gap:28px}
      .footer-bottom{align-items:flex-start;flex-direction:column;padding:20px 0}
    }