:root {
            --primary: rgb(90, 200, 250);
            --secondary: #1D7BFF;
            --bg-dark: #060913;
            --bg-card: rgba(13, 20, 38, 0.85);
            --text-light: #F4F7FC;
            --text-gray: #8F9CAE;
            --border: rgba(255, 255, 255, 0.08);
            --glacier-gradient: linear-gradient(135deg, #1D7BFF 0%, rgb(90, 200, 250) 100%);
            --ink-gradient: linear-gradient(180deg, #060913 0%, #0A1128 100%);
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: var(--font-stack); background-color: #060913; color: var(--text-light); line-height: 1.6; }
        a { color: inherit; text-decoration: none; transition: all 0.3s ease; }

        .header { position: fixed; top: 0; left: 0; width: 100%; z-index: 100; background: rgba(6, 9, 19, 0.85); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
        .header-container { max-width: 1200px; margin: 0 auto; padding: 0 20px; height: 70px; display: flex; align-items: center; justify-content: space-between; }
        .logo { display: inline-flex; align-items: center; gap: 12px; }
        .logo img { display: block; height: 40px; width: auto; max-width: 160px; object-fit: contain; }
        .logo span { display: inline-block; font-size: 18px; font-weight: 800; color: var(--text-light); }
        .nav { display: flex; align-items: center; gap: 30px; }
        .nav-links { display: flex; align-items: center; gap: 25px; }
        .nav-links a { font-size: 15px; font-weight: 500; color: var(--text-gray); }
        .nav-links a:hover { color: var(--primary); }
        .header-actions { display: flex; align-items: center; gap: 15px; }
        .btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 20px; border-radius: 6px; font-size: 14px; font-weight: 600; cursor: pointer; transition: all 0.3s ease; }
        .btn-outline { border: 1px solid rgba(255, 255, 255, 0.2); color: var(--text-light); }
        .btn-outline:hover { border-color: var(--primary); color: var(--primary); }
        .btn-primary { background: var(--glacier-gradient); color: #060913; border: none; }
        .nav-toggle { display: none; background: none; border: none; color: var(--text-light); font-size: 24px; cursor: pointer; }

        .inner-banner { padding: 130px 20px 60px; background: var(--ink-gradient); border-bottom: 1px solid var(--border); text-align: center; }
        .banner-title { font-size: 38px; font-weight: 800; color: #FFFFFF; }

        .content-section { max-width: 1000px; margin: 60px auto; padding: 0 20px; }
        .intro-lead { font-size: 20px; color: var(--primary); margin-bottom: 30px; text-align: center; font-weight: 600; }
        .rich-text { color: var(--text-gray); font-size: 16px; line-height: 1.8; margin-bottom: 40px; }
        .rich-text p { margin-bottom: 20px; }

        .history-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 50px; }
        .history-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 25px; text-align: center; }
        .history-card h3 { font-size: 28px; color: var(--primary); margin-bottom: 10px; }
        .history-card p { font-size: 14px; color: var(--text-gray); }

        .footer { background: #03060C; border-top: 1px solid var(--border); padding: 80px 20px 30px; }
        .footer-grid { max-width: 1200px; margin: 0 auto 60px; display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 40px; }
        .footer-brand p { color: var(--text-gray); font-size: 14px; margin-top: 20px; max-width: 320px; }
        .footer-title { font-size: 16px; font-weight: 700; color: #FFFFFF; margin-bottom: 25px; }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 12px; }
        .footer-links a { color: var(--text-gray); font-size: 14px; }
        .footer-links a:hover { color: var(--primary); }
        .footer-bottom { max-width: 1200px; margin: 0 auto; padding-top: 30px; border-top: 1px solid rgba(255, 255, 255, 0.05); display: flex; justify-content: space-between; align-items: center; color: var(--text-gray); font-size: 13px; }

        .drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); backdrop-filter: blur(4px); z-index: 998; opacity: 0; visibility: hidden; }
        .drawer-overlay.active { opacity: 1; visibility: visible; }
        .drawer { position: fixed; top: 0; left: -300px; width: 300px; height: 100%; background: #060913; border-right: 1px solid var(--border); z-index: 999; padding: 30px 24px; display: flex; flex-direction: column; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
        .drawer.open { left: 0; }
        .drawer-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 40px; }
        .drawer-close { background: none; border: none; color: var(--text-light); font-size: 24px; }
        .drawer-nav { display: flex; flex-direction: column; gap: 20px; margin-bottom: auto; }
        .drawer-nav a { font-size: 16px; font-weight: 500; color: var(--text-gray); }
        .drawer-actions { display: flex; flex-direction: column; gap: 15px; padding-top: 30px; border-top: 1px solid rgba(255,255,255,0.05); }

        @media (max-width: 768px) {
            .nav, .header-actions { display: none; }
            .nav-toggle { display: block; }
            .history-grid { grid-template-columns: repeat(2, 1fr); }
            .banner-title { font-size: 28px; }
        }