:root {
            --primary-color: #111111;
            --accent-color: #c5a880;
            --bg-color: rgb(255,255,255);
            --section-bg: #f9f9f9;
            --border-color: #eaeaea;
            --text-main: #222222;
            --text-muted: #666666;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 10px 30px rgba(0,0,0,0.06);
            --shadow-lg: 0 20px 40px rgba(0,0,0,0.08);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: var(--font-family);
            background-color: var(--bg-color);
            color: var(--text-main);
            line-height: 1.6;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            height: 80px;
            display: flex;
            align-items: center;
        }

        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
        }

        .logo img {
            display: block;
            height: 40px;
            width: auto;
            max-width: 160px;
            object-fit: contain;
            flex-shrink: 0;
        }

        .logo span {
            display: inline-block;
            font-size: 18px;
            font-weight: 800;
            line-height: 1;
            color: var(--primary-color);
            white-space: nowrap;
        }

        nav.nav-desktop {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        nav.nav-desktop a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            position: relative;
            padding: 8px 0;
        }

        nav.nav-desktop a:hover, nav.nav-desktop a.active {
            color: var(--accent-color);
        }

        .nav-btn {
            background: var(--primary-color);
            color: #fff !important;
            padding: 10px 24px !important;
            border-radius: 4px;
            font-size: 14px !important;
            font-weight: 600 !important;
        }

        
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            z-index: 102;
        }

        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--primary-color);
            margin: 5px 0;
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            left: -100%;
            width: 300px;
            height: 100vh;
            background: var(--bg-color);
            z-index: 105;
            box-shadow: var(--shadow-lg);
            transition: left 0.4s cubic-bezier(0.16, 1, 0.3, 1);
            padding: 40px 24px;
            display: flex;
            flex-direction: column;
            gap: 40px;
        }

        .mobile-drawer.open {
            left: 0;
        }

        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background: rgba(0,0,0,0.4);
            z-index: 104;
            display: none;
            backdrop-filter: blur(4px);
        }

        .drawer-overlay.show {
            display: block;
        }

        .drawer-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .drawer-close {
            background: none;
            border: none;
            font-size: 28px;
            cursor: pointer;
        }

        .drawer-menu {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .drawer-menu a {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            padding: 8px 0;
            border-bottom: 1px solid var(--border-color);
        }

        
        .about-hero {
            background: linear-gradient(135deg, #111 0%, #222 100%);
            color: #fff;
            padding: 100px 0;
            text-align: center;
        }

        .about-hero h1 {
            font-size: 40px;
            font-weight: 800;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .about-hero p {
            font-size: 18px;
            color: #ccc;
            max-width: 600px;
            margin: 0 auto;
        }

        .about-content {
            padding: 80px 0;
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            margin-bottom: 80px;
        }

        .about-text h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 24px;
            color: var(--primary-color);
        }

        .about-text p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .about-highlight-card {
            background: var(--section-bg);
            border-left: 4px solid var(--accent-color);
            padding: 24px;
            border-radius: 0 8px 8px 0;
            margin-top: 30px;
        }

        .about-highlight-card p {
            margin: 0;
            font-weight: 600;
            color: var(--primary-color);
        }

        
        .mission-section {
            background: var(--section-bg);
            padding: 80px 0;
        }

        .mission-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
        }

        .mission-card {
            background: var(--bg-color);
            padding: 40px 30px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .mission-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--primary-color);
        }

        .mission-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        
        footer {
            background: #111111;
            color: #ffffff;
            padding: 80px 0 30px 0;
            font-size: 14px;
            border-top: 1px solid #222222;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 60px;
        }

        .footer-brand .logo span {
            color: #ffffff;
        }

        .footer-desc {
            color: #888888;
            margin-top: 20px;
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 24px;
            position: relative;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: #aaaaaa;
        }

        .footer-links a:hover {
            color: var(--accent-color);
            padding-left: 4px;
        }

        .footer-contact {
            color: #aaaaaa;
            line-height: 1.8;
        }

        .footer-bottom {
            border-top: 1px solid #222222;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            color: #666666;
            font-size: 13px;
        }

        .footer-bottom-links a {
            margin-left: 20px;
            color: #666666;
        }

        .risk-warning {
            margin-top: 30px;
            padding: 20px;
            background: #161616;
            border-left: 4px solid var(--accent-color);
            font-size: 12px;
            color: #777777;
            line-height: 1.8;
        }

        
        @media (max-width: 768px) {
            header {
                height: 70px;
            }
            nav.nav-desktop {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .about-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .mission-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }