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

        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background-color: #ffffff;
            color: #1e1e2f;
            line-height: 1.5;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            background-color: #ffffff;
            border-bottom: 1px solid #eaeef2;
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(8px);
            background-color: rgba(255, 255, 255, 0.96);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 20px 0;
            gap: 16px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }

        .logo-svg {
            width: 36px;
            height: 36px;
            display: block;
        }

        .logo-text {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: -0.5px;
            color: #0a2540;
        }

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

        .nav-links a {
            text-decoration: none;
            font-weight: 500;
            color: #2c3e4e;
            transition: color 0.2s;
            font-size: 1rem;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: #1c6e8f;
        }

        .lang-switch {
            display: flex;
            gap: 12px;
            border-left: 1px solid #dce5ec;
            padding-left: 24px;
        }

        .lang-switch span {
            font-size: 0.85rem;
            font-weight: 500;
            color: #5a6e7c;
            cursor: default;
        }

        .lang-switch .active-lang {
            color: #1c6e8f;
            font-weight: 600;
        }

        .hero {
            padding: 64px 0 80px;
            background: linear-gradient(145deg, #f9fcff 0%, #ffffff 100%);
        }

        .hero-grid {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
        }

        .hero-content {
            flex: 1;
            min-width: 280px;
        }

        .hero-badge {
            display: inline-block;
            background: #eef2fa;
            color: #1c6e8f;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 40px;
            font-size: 0.85rem;
            margin-bottom: 24px;
            letter-spacing: 0.3px;
        }

        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            color: #0a2540;
        }

        .hero-title strong {
            background: linear-gradient(120deg, #1c6e8f, #2a9d8f);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: #334e68;
            margin-bottom: 32px;
            max-width: 540px;
        }

        .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 32px;
        }

        .btn-primary {
            background-color: #0f2b3d;
            color: white;
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            text-decoration: none;
            display: inline-block;
            transition: all 0.2s;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            text-align: center;
        }

        .btn-primary:hover {
            background-color: #1c6e8f;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(28, 110, 143, 0.2);
        }

        .btn-outline {
            background-color: transparent;
            border: 1.5px solid #cbdde9;
            color: #1f4e6e;
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            text-decoration: none;
            display: inline-block;
            transition: all 0.2s;
        }

        .btn-outline:hover {
            border-color: #1c6e8f;
            background-color: rgba(28, 110, 143, 0.04);
        }

        .feature-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 16px;
            font-size: 0.9rem;
            color: #2c5a74;
            font-weight: 500;
        }

        .feature-tags span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-visual {
            flex: 1;
            background: linear-gradient(125deg, #eef3fa, #ffffff);
            border-radius: 40px;
            padding: 32px;
            text-align: center;
            min-width: 260px;
            box-shadow: 0 20px 35px -12px rgba(0,0,0,0.05);
        }

        .translation-demo {
            background: white;
            border-radius: 28px;
            padding: 24px;
            box-shadow: 0 12px 28px rgba(0,0,0,0.05);
            text-align: left;
        }

        .demo-lang-pair {
            display: flex;
            justify-content: space-between;
            margin-bottom: 20px;
            font-weight: 600;
            color: #1c6e8f;
        }

        .demo-text {
            background: #f8fafc;
            padding: 16px;
            border-radius: 20px;
            margin-bottom: 12px;
            font-size: 1rem;
        }

        .demo-result {
            border-left: 4px solid #2a9d8f;
            background: #fef9e6;
            padding: 16px;
            border-radius: 20px;
        }

        .lang-support {
            background: #f7fafd;
            padding: 48px 0;
            border-top: 1px solid #e2edf2;
            border-bottom: 1px solid #e2edf2;
        }

        .lang-support h3 {
            text-align: center;
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 28px;
            color: #0a2b3b;
        }

        .lang-list {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 28px;
            font-size: 1rem;
            font-weight: 500;
            color: #2c5f7a;
        }

        .lang-list span {
            background: white;
            padding: 5px 16px;
            border-radius: 40px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
        }

        .site-footer {
            background: #0a1c2a;
            color: #cddfe7;
            padding: 56px 0 32px;
            margin-top: 0;
        }

        .footer-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-col {
            flex: 1;
            min-width: 150px;
        }

        .footer-col h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 1rem;
        }

        .footer-col a {
            display: block;
            color: #b9d0df;
            text-decoration: none;
            margin-bottom: 12px;
            font-size: 0.9rem;
            transition: color 0.2s;
        }

        .footer-col a:hover {
            color: white;
        }

        .copyright {
            text-align: center;
            padding-top: 32px;
            border-top: 1px solid #1e3a4a;
            font-size: 0.85rem;
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .nav-links {
                width: 100%;
                justify-content: space-between;
            }
            .lang-switch {
                border-left: none;
                padding-left: 0;
                margin-top: 8px;
            }
            .hero-grid {
                flex-direction: column;
            }
            .btn-group {
                justify-content: center;
            }
            .feature-tags {
                justify-content: center;
            }
        }