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

        body {
            font-family: 'Inter', sans-serif;
            background-color: #0a0a0a;
            color: #f0f0f0;
            scroll-behavior: smooth;
            line-height: 1.5;
        }

        /* custom scroll */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #1a1a1a;
        }
        ::-webkit-scrollbar-thumb {
            background: #d4af37;
            border-radius: 10px;
        }

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

        /* header / navigation */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(10, 10, 10, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid rgba(212, 175, 55, 0.2);
            transition: all 0.3s ease;
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 2rem;
            max-width: 1400px;
            margin: 0 auto;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.7rem;
            font-weight: 700;
            letter-spacing: -0.5px;
        }
        .logo i {
            color: #d4af37;
            font-size: 2rem;
        }
        .logo span {
            background: linear-gradient(135deg, #fff 30%, #d4af37 100%);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
        }
        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
        }
        .nav-links a {
            text-decoration: none;
            color: #e0e0e0;
            font-weight: 500;
            transition: 0.3s;
            font-size: 1rem;
        }
        .nav-links a:hover, .nav-links a.active {
            color: #d4af37;
        }
        .sx_center {margin: 10px auto 10px auto;}
        .mobile-menu {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #d4af37;
        }

        /* Hero section */
        .hero {
            min-height: 100vh;
            background: linear-gradient(135deg, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.7) 100%), url('https://mercedes-silver.ru/media/fon-service-IMG20260227134727.jpg') center/cover no-repeat fixed;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 0 1rem;
            position: relative;
        }
        .hero-content {
            max-width: 900px;
            animation: fadeUp 0.9s ease-out;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(212, 175, 55, 0.2);
            backdrop-filter: blur(4px);
            padding: 0.5rem 1.2rem;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 1px;
            color: #d4af37;
            border: 1px solid rgba(212, 175, 55, 0.4);
            margin-bottom: 1.5rem;
        }
        .hero h1 {
            font-size: 3.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.2rem;
        }
        .hero h1 span {
            color: #d4af37;
            border-bottom: 3px solid #d4af37;
            display: inline-block;
        }
        .hero p {
            font-size: 1.2rem;
            color: #ccc;
            max-width: 700px;
            margin: 0 auto 2rem;
        }
        .btn-group {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary {
            background: #d4af37;
            color: #0a0a0a;
            padding: 0.9rem 2.2rem;
            border-radius: 40px;
            font-weight: 700;
            text-decoration: none;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
            cursor: pointer;
            font-size: 1rem;
        }
        .btn-primary:hover {
            background: #c5a228;
            transform: translateY(-3px);
            box-shadow: 0 15px 25px -10px rgba(212, 175, 55, 0.4);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid #d4af37;
            color: #d4af37;
            padding: 0.9rem 2.2rem;
            border-radius: 40px;
            font-weight: 700;
            text-decoration: none;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline:hover {
            background: #d4af37;
            color: #0a0a0a;
            transform: translateY(-3px);
        }

        /* section styling */
        section {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 3rem;
            position: relative;
        }
        .section-title:after {
            content: '';
            display: block;
            width: 80px;
            height: 4px;
            background: #d4af37;
            margin: 12px auto 0;
            border-radius: 2px;
        }
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            margin-top: 1rem;
        }
        .service-card {
            background: #0f0e0e;
            border-radius: 24px;
            padding: 2rem 1.8rem;
            text-align: center;
            transition: all 0.3s;
            border: 1px solid #2a2a2a;
        }
        .service-card:hover {
            transform: translateY(-8px);
            border-color: #d4af37;
            box-shadow: 0 20px 30px -15px rgba(0,0,0,0.6);
        }
        .service-icon {
            font-size: 3rem;
            color: #d4af37;
            margin-bottom: 1.2rem;
        }
        .service-card h3 {
            font-size: 1.6rem;
            margin-bottom: 1rem;
        }
        .service-card p {
            color: #aaa;
            font-size: 0.95rem;
        }

        /* advantages */
        .advantages {
            background: #0f0f0f;
        }
        .adv-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .adv-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 1rem;
            padding: 1rem;
        }
        .adv-item i {
            font-size: 2.5rem;
            color: #d4af37;
        }
        .adv-item h4 {
            font-size: 1.4rem;
        }
        .adv-item p {
            color: #bbb;
            font-size: 0.95rem;
        }

        /* запись + форма */
        .cta-section {
            background: linear-gradient(115deg, #0b0b0b 40%, #141414 100%);
            border-top: 1px solid #2a2a2a;
            border-bottom: 1px solid #2a2a2a;
        }
        .cta-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 3rem;
            justify-content: space-between;
            align-items: center;
        }
        .cta-text {
            flex: 1;
        }
        .cta-text h2 {
            font-size: 2.2rem;
            margin-bottom: 1rem;
        }
        .cta-text p {
            color: #bbb;
            margin-bottom: 1.5rem;
        }
        .contact-info {
            margin-top: 1rem;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .contact-info div {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .contact-info i {
            color: #d4af37;
            width: 24px;
        }
        .cta-form {
            flex: 1;
            background: #0f0f0f;
            padding: 2rem;
            border-radius: 28px;
            border: 1px solid #2c2c2c;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group input, .form-group select {
            width: 100%;
            padding: 12px 16px;
            background: #1e1e1e;
            border: 1px solid #333;
            border-radius: 14px;
            color: #fff;
            font-family: inherit;
            transition: 0.2s;
        }
        .form-group input:focus, .form-group select:focus {
            outline: none;
            border-color: #d4af37;
        }
        .form-group button {
            width: 100%;
            background: #d4af37;
            border: none;
            padding: 14px;
            font-weight: bold;
            border-radius: 40px;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.3s;
        }
        .form-group button:hover {
            background: #c5a228;
        }
        .small-note {
            font-size: 0.7rem;
            text-align: center;
            color: #777;
            margin-top: 0.8rem;
        }

        /* footer */
        footer {
            background: #050505;
            padding: 30px 0;
            text-align: center;
            border-top: 1px solid #222;
            font-size: 0.9rem;
            color: #888;
        }
        .footer-social {
            margin-top: 15px;
            display: flex;
            justify-content: center;
            gap: 1.2rem;
        }
        .footer-social a {
            color: #aaa;
            font-size: 1.3rem;
            transition: 0.3s;
        }
        .footer-social a:hover {
            color: #d4af37;
        }

        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* responsive */
        @media (max-width: 850px) {
            .nav-links {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 70px);
                background: #0a0a0a;
                flex-direction: column;
                align-items: center;
                justify-content: flex-start;
                padding-top: 3rem;
                gap: 2rem;
                transition: left 0.4s ease;
                z-index: 999;
                backdrop-filter: blur(12px);
                background: rgba(10,10,10,0.98);
            }
            .nav-links.active {
                left: 0;
            }
            .mobile-menu {
                display: block;
            }
            .hero h1 {
                font-size: 2.4rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .section-title {
                font-size: 2rem;
            }
            .cta-wrapper {
                flex-direction: column;
            }
        }

        @media (max-width: 550px) {
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .container {
                padding: 0 16px;
            }
        }