/* ========== CSS Reset & Base ========== */
        *, *::before, *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --primary: #0A2540;
            --primary-light: #1A3A5C;
            --accent: #0066FF;
            --accent-hover: #0052CC;
            --accent-light: #E8F0FE;
            --gold: #C8A96E;
            --gold-light: #F5EFE0;
            --text-dark: #1A1A2E;
            --text-body: #4A5568;
            --text-light: #718096;
            --bg-white: #FFFFFF;
            --bg-light: #F7F9FC;
            --bg-section: #F0F4F8;
            --border: #E2E8F0;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
            --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
            --shadow-xl: 0 20px 50px rgba(0,0,0,0.15);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-white);
            overflow-x: hidden;
        }

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

        img {
            max-width: 100%;
            height: auto;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        /* ========== Header & Navigation ========== */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 37, 64, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,255,255,0.08);
            transition: var(--transition);
        }

        header.scrolled {
            background: rgba(10, 37, 64, 0.98);
            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
        }

        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent) 0%, #00A3FF 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -1px;
        }

        .logo-text {
            color: white;
            font-size: 1.15rem;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        .logo-text span {
            color: var(--gold);
        }

        nav ul {
            display: flex;
            list-style: none;
            gap: 4px;
        }

        nav a {
            color: rgba(255,255,255,0.75);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }

        nav a:hover, nav a.active {
            color: white;
            background: rgba(255,255,255,0.1);
        }

        nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 1px;
        }

        .header-cta {
            background: var(--accent);
            color: white !important;
            padding: 8px 20px !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
        }

        .header-cta:hover {
            background: var(--accent-hover) !important;
            transform: translateY(-1px);
        }

        /* Language Switcher */
        .lang-switcher {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: 12px;
            padding-left: 12px;
            border-left: 1px solid rgba(255,255,255,0.15);
        }

        .lang-btn {
            background: transparent;
            border: 1px solid rgba(255,255,255,0.25);
            color: rgba(255,255,255,0.7);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-family: inherit;
        }

        .lang-btn:hover {
            border-color: rgba(255,255,255,0.5);
            color: white;
        }

        .lang-btn.active {
            background: var(--accent);
            border-color: var(--accent);
            color: white;
        }

        /* Mobile Menu */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
        }

        .menu-toggle span {
            width: 24px;
            height: 2px;
            background: white;
            border-radius: 2px;
            transition: var(--transition);
        }

        .menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ==========