.container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 1;
        }

        .header {
            text-align: center;
            padding: 100px 0 40px 0;
            border-bottom: 1px solid #21262d;
        }

        .page-title {
            font-size: clamp(2rem, 5vw, 3rem);
            color: #00d4ff;
            margin-bottom: 15px;
            text-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
        }

        .page-subtitle {
            font-size: 1.2rem;
            color: #8b949e;
            font-weight: 400;
        }

        .main {
            padding: 60px 0;
        }

        .section {
            margin-bottom: 80px;
        }

        .section-title {
            font-size: clamp(1.3rem, 4vw, 1.8rem);
            color: #f0f6fc;
            margin-bottom: 30px;
            position: relative;
            padding-left: 30px;
        }

        .section-title::before {
            content: '>';
            position: absolute;
            left: 0;
            color: #00ff88;
            font-weight: 700;
        }

        .intro-box {
            background: rgba(22, 27, 34, 0.6);
            border: 1px solid #30363d;
            border-left: 4px solid #58a6ff;
            border-radius: 8px;
            padding: 30px;
            margin-bottom: 40px;
        }

        .intro-box h3 {
            color: #58a6ff;
            font-size: 1.3rem;
            margin-bottom: 15px;
        }

        .intro-box p {
            color: #c9d1d9;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .intro-box ul {
            list-style: none;
            padding-left: 0;
        }

        .intro-box ul li {
            margin: 10px 0;
            padding-left: 25px;
            position: relative;
            color: #c9d1d9;
        }

        .intro-box ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #00ff88;
            font-weight: 700;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .service-card {
            background: rgba(22, 27, 34, 0.6);
            border: 1px solid #30363d;
            border-radius: 12px;
            padding: 30px;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, #00d4ff, #00ff88);
            transition: opacity 0.3s ease;
        }

        .service-card:hover {
            border-color: #58a6ff;
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
        }

        .service-card:hover::before {
            display: block;
        }

        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 15px;
            display: block;
        }

        .service-card h3 {
            color: #58a6ff;
            font-size: clamp(1.1rem, 3vw, 1.3rem);
            margin-bottom: 15px;
            font-weight: 600;
        }

        .service-card p {
            color: #c9d1d9;
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .service-card ul {
            list-style: none;
            padding-left: 0;
        }

        .service-card ul li {
            margin: 8px 0;
            padding-left: 20px;
            position: relative;
            color: #c9d1d9;
            font-size: 0.9rem;
        }

        .service-card ul li::before {
            content: '▸';
            position: absolute;
            left: 0;
            color: #00ff88;
            font-weight: 700;
        }

        .tech-note {
            background: rgba(88, 166, 255, 0.05);
            border-left: 4px solid #58a6ff;
            border-radius: 8px;
            padding: 25px;
            margin: 30px 0;
        }

        .tech-note strong {
            color: #58a6ff;
            font-size: 1.1rem;
        }

        .tech-note p {
            color: #c9d1d9;
            line-height: 1.8;
            margin-top: 10px;
        }

        .cta-section {
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 255, 136, 0.1) 100%);
            border: 1px solid #30363d;
            border-radius: 12px;
            padding: 50px;
            text-align: center;
            margin: 60px 0;
        }

        .cta-section h2 {
            color: #00d4ff;
            font-size: 2rem;
            margin-bottom: 20px;
        }

        .cta-button {
            display: inline-block;
            background: transparent;
            border: 1px solid #00ff88;
            color: #00ff88;
            padding: 15px 40px;
            border-radius: 8px;
            text-decoration: none;
            font-size: 1.1rem;
            font-weight: bold;
            margin-top: 20px;
            transition: all 0.3s ease;
        }

        .cta-button:hover {
            background: rgba(0, 255, 136, 0.1);
            box-shadow: 0 0 20px rgba(0, 255, 136, 0.2);
        }

        body.light-theme .cta-button {
            border-color: #00884d;
            color: #00884d;
        }

        body.light-theme .cta-button:hover {
            background: rgba(0, 136, 77, 0.1);
            box-shadow: 0 0 20px rgba(0, 136, 77, 0.15);
        }

        .footer {
            text-align: center;
            padding: 40px 0;
            border-top: 1px solid #21262d;
            color: #8b949e;
            font-size: 0.9rem;
        }

        .footer .php-tag {
            color: #ff7b72;
            font-weight: 500;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .service-icon {
                font-size: 2rem !important;
            }

            .services-grid {
                grid-template-columns: 1fr;
            }

            .header {
                padding: 80px 0 30px 0;
            }

            .page-title {
                font-size: clamp(1.3rem, 4vw, 1.8rem);
            }

            .page-subtitle {
                font-size: 1rem;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .cta-section {
                padding: 30px 20px;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }

            .container {
                padding: 0 15px;
            }

            .intro-box, .service-card {
                padding: 20px;
            }

            .theme-toggle {
                order: -1;
            }

            .lang-switcher {
                order: -1;
                margin-right: auto;
            }
        }

        /* Light Theme — page-specific overrides */
        body.light-theme .header {
            border-bottom: 1px solid #d0d7de;
        }

        body.light-theme .page-title {
            color: #0969da;
            text-shadow: 0 0 15px rgba(9, 105, 218, 0.2);
        }

        body.light-theme .page-subtitle {
            color: #57606a;
        }

        body.light-theme .section-title {
            color: #24292f;
        }

        body.light-theme .section-title::before {
            color: #00884d;
        }

        body.light-theme .intro-box {
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid #d0d7de;
            border-left: 4px solid #0969da;
        }

        body.light-theme .intro-box h3 {
            color: #0969da;
        }

        body.light-theme .intro-box p,
        body.light-theme .intro-box ul li {
            color: #24292f;
        }

        body.light-theme .intro-box ul li::before {
            color: #00884d;
        }

        body.light-theme .service-card {
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid #d0d7de;
        }

        body.light-theme .service-card:hover {
            border-color: #0969da;
            box-shadow: 0 10px 30px rgba(9, 105, 218, 0.15);
        }

        body.light-theme .service-card h3 {
            color: #0969da;
        }

        body.light-theme .service-card p,
        body.light-theme .service-card ul li {
            color: #24292f;
        }

        body.light-theme .service-card ul li::before {
            color: #00884d;
        }

        body.light-theme .tech-note {
            background: rgba(9, 105, 218, 0.05);
            border-left: 4px solid #0969da;
        }

        body.light-theme .tech-note strong {
            color: #0969da;
        }

        body.light-theme .tech-note p {
            color: #24292f;
        }

        body.light-theme .cta-section {
            background: linear-gradient(135deg, rgba(9, 105, 218, 0.1) 0%, rgba(0, 136, 77, 0.1) 100%);
            border: 1px solid #d0d7de;
        }

        body.light-theme .cta-section h2 {
            color: #0969da;
        }

        body.light-theme .footer {
            border-top: 1px solid #d0d7de;
            color: #57606a;
        }

        body.light-theme .footer .php-tag {
            color: #cf222e;
        }