:root{
      --theme:#0B3D91;
      --theme-dark:#082b67;
      --magenta:#c21868;
      --ink:#182235;
      --muted:#687386;
      --line:#e5e9f0;
      --soft:#f4f6fa;
      --white:#fff;
      --shadow:0 18px 50px rgba(20,38,72,.09);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#fff;font-family:Arial,"Microsoft YaHei","PingFang SC",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:#101b31;color:#d9e3f5;font-size:13px}
    .topbar-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between}
    .topbar-contact{display:flex;gap:22px}
    .topbar a:hover{color:#fff}
    .header{position:relative;z-index:30;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{height:76px;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:var(--theme);white-space:nowrap}
    .logo img{width:34px;height:34px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:center;justify-content:center;gap:4px;padding:0;margin:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:6px;padding:25px 13px;font-size:14px;font-weight:600;white-space:nowrap}
    .nav-link:hover,.nav-link.active{color:var(--theme)}
    .has-arrow:after{content:"";width:6px;height:6px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg);margin-top:-4px}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%);visibility:hidden;opacity:0;pointer-events:none;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);transition:.2s ease;z-index:50}
    .dropdown-panel{width:245px;padding:12px}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
    .dropdown-panel a{display:block;padding:10px 12px;border-radius:9px;font-size:13px}
    .dropdown-panel a:hover{background:var(--soft);color:var(--theme)}
    .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}
    .mega-menu{width:610px;padding:20px}
    .mega-menu-wide{width:760px}
    .mega-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:14px;border-bottom:1px solid var(--line);padding-bottom:12px}
    .mega-head strong{font-size:16px}
    .mega-head span{font-size:12px;color:var(--muted)}
    .mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
    .mega-card{display:flex;gap:10px;padding:10px;border:1px solid #edf0f5;border-radius:12px;min-width:0}
    .mega-card:hover{border-color:#b9c8e4;background:#f8faff}
    .mega-card>img{width:42px;height:42px;object-fit:cover;border-radius:9px;background:var(--soft);flex:0 0 42px}
    .mega-card-body{display:block;min-width:0}
    .mega-card-body strong,.mega-card-body p,.mega-card-body small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .mega-card-body strong{font-size:13px}
    .mega-card-body p,.mega-card-body small{font-size:11px;color:var(--muted);margin:2px 0}
    .mega-category-list{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:15px}
    .mega-category-list a{padding:5px 10px;background:var(--soft);border-radius:30px;font-size:12px}
    .mega-category-list a:hover{color:var(--theme);background:#eaf0fc}
    .mega-footer{display:block;margin-top:16px;padding-top:13px;border-top:1px solid var(--line);font-size:13px;color:var(--theme);font-weight:700}
    .header-btns{display:flex;align-items:center;gap:13px;white-space:nowrap}
    .member-entry{font-size:13px;color:var(--theme)}
    .account-entry{background:var(--theme);color:#fff;padding:8px 15px;border-radius:8px;font-size:13px}
    .account-entry:hover{background:var(--theme-dark)}
    .hamburger{display:none;border:0;background:transparent;padding:8px;cursor:pointer}
    .hamburger span{display:block;width:22px;height:2px;margin:4px 0;background:var(--ink);transition:.2s}
    .hamburger.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
    .hamburger.active span:nth-child(2){opacity:0}
    .hamburger.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
    .drawer-overlay{display:none;position:fixed;inset:0;background:rgba(7,17,37,.5);z-index:60}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;top:0;right:-360px;width:min(360px,88vw);height:100vh;overflow:auto;background:#fff;z-index:70;transition:right .25s ease;box-shadow:-15px 0 40px rgba(0,0,0,.15)}
    .mobile-drawer.open{right:0}
    .drawer-head{display:flex;align-items:center;gap:15px;padding:20px;border-bottom:1px solid var(--line);font-weight:700;color:var(--theme)}
    .drawer-head a{margin-left:auto;background:var(--theme);color:#fff;padding:5px 12px;border-radius:6px;font-size:13px}
    .drawer-close{border:0;background:transparent;font-size:28px;color:var(--muted);cursor:pointer;line-height:1}
    .drawer-menu{padding:10px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 2px;border:0;border-bottom:1px solid var(--line);background:transparent;text-align:left;color:var(--ink);font-size:15px;cursor:pointer}
    .drawer-group{border-bottom:1px solid var(--line)}
    .drawer-toggle:after{content:"+";float:right;color:var(--muted);font-size:20px}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:4px 0 8px 14px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:7px 0;color:var(--muted);font-size:13px}
    .drawer-submenu a:hover{color:var(--theme)}
    .footer{background:#101b31;color:#cbd6e8;margin-top:80px}
    .footer-main{display:grid;grid-template-columns:1.45fr 1fr 1fr 1fr;gap:42px;padding:58px 0 42px}
    .footer .logo{color:#fff;margin-bottom:16px}
    .footer .logo img{background:#fff;border-radius:7px}
    .footer-brand p{max-width:330px;margin:0;color:#9eacc2;font-size:13px}
    .footer-social{margin-top:18px;color:#fff}
    .footer-column h3{margin:3px 0 15px;color:#fff;font-size:15px}
    .footer-links{display:flex;flex-direction:column;gap:8px}
    .footer-links a,.footer-contact a{color:#aebbd0;font-size:13px}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-contact{display:grid;gap:12px;font-size:13px}
    .footer-contact span{color:#8190a9}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.1);padding:18px 0;font-size:12px;color:#8290a7}
    .about-page{background:#fff}
    .about-hero{background:linear-gradient(135deg,#f4f7fd 0%,#fff 55%,#fff1f7 100%);padding:78px 0 84px;border-bottom:1px solid var(--line)}
    .about-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--magenta);font-size:13px;font-weight:800;letter-spacing:1px}
    .about-kicker:before{content:"";width:28px;height:3px;background:var(--magenta);border-radius:3px}
    .about-hero h1{max-width:780px;margin:18px 0 18px;color:var(--ink);font-size:clamp(35px,5vw,62px);line-height:1.16;letter-spacing:-2px}
    .about-hero p{max-width:700px;margin:0;color:var(--muted);font-size:17px}
    .about-hero-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
    .primary-btn,.outline-btn{display:inline-flex;align-items:center;justify-content:center;padding:11px 19px;border-radius:9px;font-size:14px;font-weight:700}
    .primary-btn{background:var(--theme);color:#fff}
    .outline-btn{border:1px solid #cbd5e5;color:var(--theme);background:#fff}
    .primary-btn:hover{background:var(--theme-dark)}
    .outline-btn:hover{border-color:var(--theme);background:#f5f8ff}
    .about-section{padding:78px 0}
    .section-heading{text-align:center;max-width:700px;margin:0 auto 38px}
    .section-heading small{color:var(--magenta);font-weight:800}
    .section-heading h2{margin:8px 0 12px;font-size:32px;line-height:1.25}
    .section-heading p{margin:0;color:var(--muted);font-size:15px}
    .about-values{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .value-card{padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:0 10px 28px rgba(20,38,72,.04)}
    .value-icon{display:grid;place-items:center;width:46px;height:46px;border-radius:13px;background:#eaf0fc;color:var(--theme);font-weight:800;font-size:18px}
    .value-card:nth-child(2) .value-icon{background:#fff0f6;color:var(--magenta)}
    .value-card h3{margin:20px 0 8px;font-size:19px}
    .value-card p{margin:0;color:var(--muted);font-size:14px}
    .about-story{background:var(--soft)}
    .story-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start}
    .story-copy h2{font-size:32px;line-height:1.25;margin:0 0 16px}
    .story-copy p{color:var(--muted);font-size:15px;margin:0 0 14px}
    .story-list{display:grid;gap:15px}
    .story-item{display:grid;grid-template-columns:80px 1fr;gap:16px;padding:18px;background:#fff;border-radius:14px;border:1px solid var(--line)}
    .story-year{color:var(--magenta);font-weight:800;font-size:14px}
    .story-item h3{font-size:16px;margin:0 0 5px}
    .story-item p{color:var(--muted);font-size:13px;margin:0}
    .about-numbers{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .number-card{padding:25px;text-align:center;border:1px solid var(--line);border-radius:15px}
    .number-card strong{display:block;color:var(--theme);font-size:30px;line-height:1.2}
    .number-card span{display:block;color:var(--muted);font-size:13px;margin-top:7px}
    .about-cta{padding:45px;text-align:center;background:linear-gradient(120deg,var(--theme),#1a63bd);border-radius:22px;color:#fff}
    .about-cta h2{margin:0 0 10px;font-size:28px}
    .about-cta p{margin:0 auto 22px;color:#dce9ff;font-size:14px}
    .about-cta .primary-btn{background:#fff;color:var(--theme)}
    @media(max-width:1050px){
      .nav-link{padding-left:8px;padding-right:8px}
      .header-inner{gap:12px}
      .mega-menu-wide{left:auto;right:-100px;transform:none}
    }
    @media(max-width:820px){
      .topbar-inner{padding:7px 0;align-items:flex-start;gap:8px}
      .topbar-inner,.topbar-contact{flex-direction:column}
      .topbar-contact{gap:0}
      .header-inner{height:68px}
      .main-nav{display:none}
      .header-btns{margin-left:auto}
      .hamburger{display:block}
      .member-entry{display:none}
      .footer-main{grid-template-columns:1fr 1fr}
      .about-values,.about-numbers{grid-template-columns:repeat(2,1fr)}
      .story-grid{grid-template-columns:1fr;gap:30px}
    }
    @media(max-width:560px){
      .container{width:min(100% - 28px,1180px)}
      .account-entry{display:none}
      .about-hero{padding:55px 0 60px}
      .about-hero h1{font-size:38px;letter-spacing:-1px}
      .about-hero p{font-size:15px}
      .about-section{padding:55px 0}
      .section-heading h2,.story-copy h2{font-size:27px}
      .about-values,.about-numbers{grid-template-columns:1fr}
      .story-item{grid-template-columns:65px 1fr}
      .about-cta{padding:32px 20px}
      .footer-main{grid-template-columns:1fr;gap:28px;padding:42px 0 30px}
      .footer-bottom{flex-direction:column;gap:5px}
    }