:root {
            /* Cosmic Ice & Silver Shimmer Theme */
            --bg-primary: #F0F6FC;
            --bg-secondary: #FFFFFF;
            --text-primary: #07152B;
            --text-secondary: #3E526D;
            --text-muted: #748A9E;
            
            --primary: #0A58CA; /* Deep Space Blue */
            --primary-hover: #08439B;
            --primary-light: #E7F1FF;
            --accent-sky: #38BDF8; /* Aurora Ice Cyan */
            --accent-gold: #EAB308; /* Star gold */
            
            --border-color: #CBDCEE;
            --card-shadow: 0 16px 40px -12px rgba(10, 88, 202, 0.08);
            --card-shadow-hover: 0 24px 50px -10px rgba(56, 189, 248, 0.2);
            --gradient-cosmic: linear-gradient(135deg, #07152B 0%, #11284E 100%);
            --gradient-star: linear-gradient(135deg, #0A58CA 0%, #38BDF8 100%);
            --border-radius-lg: 24px;
            
            --transition-speed: 0.35s;
        }

        [data-theme="dark"] {
            /* Starry Space Aurora Theme */
            --bg-primary: #020612;
            --bg-secondary: #0A1128;
            --text-primary: #F0F6FC;
            --text-secondary: #8EAECE;
            --text-muted: #5F7D9C;
            
            --primary: #38BDF8; /* Bright Cyan glow */
            --primary-hover: #0EA5E9;
            --primary-light: rgba(56, 189, 248, 0.1);
            --accent-sky: #E0F2FE;
            --accent-gold: #FACC15;
            
            --border-color: #162444;
            --card-shadow: 0 16px 45px -15px rgba(0, 0, 0, 0.7);
            --card-shadow-hover: 0 24px 50px -10px rgba(56, 189, 248, 0.15);
        }

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

        body {
            font-family: 'Plus Jakarta Sans', sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            transition: background-color var(--transition-speed), color var(--transition-speed);
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: 'Space Grotesk', sans-serif;
            font-weight: 700;
            color: var(--text-primary);
        }

        /* --- Header / Navigation --- */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background-color: rgba(240, 246, 252, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: all var(--transition-speed);
        }

        [data-theme="dark"] header {
            background-color: rgba(2, 6, 18, 0.85);
        }

        .nav-container {
            max-width: 1240px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 24px;
            gap: 16px;
        }

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

        .logo-img {
            height: 46px;
            border-radius: 50%;
            border: 2px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(10, 88, 202, 0.15);
            transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        .logo-area:hover .logo-img {
            transform: scale(1.1) rotate(15deg);
        }

        .brand-name {
            font-size: 21px;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: var(--gradient-star);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .brand-sub {
            font-size: 10px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--text-secondary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 20px;
            list-style: none;
        }

        .nav-link {
            text-decoration: none;
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 14px;
            transition: color 0.3s;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        /* Celestial Light/Dark button */
        .theme-btn {
            background: var(--primary-light);
            border: 1px solid var(--border-color);
            color: var(--primary);
            width: 44px;
            height: 44px;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            transition: all 0.3s ease;
        }

        .theme-btn:hover {
            transform: scale(1.08) rotate(15deg);
            background: var(--primary);
            color: white;
        }

        .btn-download-app {
            background: var(--gradient-star);
            color: white;
            padding: 10px 20px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 700;
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 7px;
            box-shadow: 0 4px 15px rgba(10, 88, 202, 0.2);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-download-app:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(56, 189, 248, 0.3);
        }

        .mobile-menu-btn {
            display: none;
            font-size: 24px;
            color: var(--text-primary);
            background: none;
            border: none;
            cursor: pointer;
        }

        /* --- 🌟 Centered Floating Cosmic Hero --- */
        .hero {
            padding: 160px 24px 100px 24px;
            text-align: center;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .cosmic-backdrop {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(56, 189, 248, 0.12) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }

        .hero-badge {
            background-color: var(--primary-light);
            color: var(--primary);
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 24px;
            border: 1px solid var(--border-color);
            position: relative;
            z-index: 1;
        }

        .hero-badge i {
            color: var(--accent-gold);
        }

        .hero-title {
            font-size: 60px;
            line-height: 1.15;
            letter-spacing: -1.5px;
            margin-bottom: 24px;
            max-width: 900px;
            position: relative;
            z-index: 1;
        }

        .hero-title span {
            background: var(--gradient-star);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 19px;
            color: var(--text-secondary);
            margin-bottom: 40px;
            max-width: 700px;
            position: relative;
            z-index: 1;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 60px;
            position: relative;
            z-index: 1;
        }

        .btn-hero-glow {
            background: var(--gradient-star);
            color: white;
            padding: 16px 40px;
            border-radius: 40px;
            text-decoration: none;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 10px 25px rgba(10, 88, 202, 0.25);
            transition: all 0.3s ease;
        }

        .btn-hero-glow:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 35px rgba(56, 189, 248, 0.35);
        }

        .btn-hero-flat {
            background: var(--bg-secondary);
            color: var(--text-primary);
            border: 1px solid var(--border-color);
            padding: 16px 40px;
            border-radius: 40px;
            text-decoration: none;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: var(--card-shadow);
            transition: all 0.3s ease;
        }

        .btn-hero-flat:hover {
            background: var(--primary-light);
            transform: translateY(-3px);
        }

        /* Floating Space Devices Preview */
        .hero-floating-view {
            width: 100%;
            max-width: 1000px;
            display: flex;
            justify-content: center;
            position: relative;
            z-index: 1;
        }

        .orbit-circle-dashed {
            position: absolute;
            width: 650px;
            height: 650px;
            border: 1.5px dashed rgba(10, 88, 202, 0.15);
            border-radius: 50%;
            top: -100px;
            animation: spinOrbit 45s infinite linear;
            pointer-events: none;
        }

        @keyframes spinOrbit {
            to { transform: rotate(360deg); }
        }

        .satellite-node {
            position: absolute;
            color: var(--primary);
            font-size: 28px;
            filter: drop-shadow(0 0 10px rgba(56, 189, 248, 0.5));
        }

        .stellar-card-float {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius-lg);
            padding: 30px;
            box-shadow: var(--card-shadow-hover);
            width: 100%;
            max-width: 700px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            text-align: left;
            position: relative;
            transform: translateY(0);
            transition: all var(--transition-speed);
        }

        .stellar-card-float:hover {
            transform: translateY(-5px);
        }

        /* --- 🛡️ Widget 1: Live Network Signal Status --- */
        .network-signal-widget {
            display: flex;
            flex-direction: column;
            gap: 14px;
            border-right: 1px solid var(--border-color);
            padding-right: 20px;
        }

        .widget-title {
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--text-muted);
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .widget-title i {
            color: #10B981;
            animation: pulseSignal 1.5s infinite;
        }

        @keyframes pulseSignal {
            0% { opacity: 0.3; }
            50% { opacity: 1; }
            100% { opacity: 0.3; }
        }

        .network-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: var(--bg-primary);
            padding: 10px 14px;
            border-radius: 12px;
            font-size: 13px;
        }

        .network-info {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
        }

        .network-indicator {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #10B981;
        }

        .network-speed {
            font-family: 'Space Grotesk';
            color: var(--text-muted);
            font-size: 11px;
        }

        /* --- 🧮 Widget 2: Reseller Profit Calculator --- */
        .profit-calculator-widget {
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 12px;
        }

        .calc-header {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
        }

        .calc-input-group {
            display: flex;
            gap: 10px;
        }

        .calc-input-group input {
            flex-grow: 1;
            padding: 8px 12px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background: var(--bg-primary);
            color: var(--text-primary);
            font-family: inherit;
            outline: none;
            font-size: 14px;
        }

        .calc-result-box {
            background: var(--primary-light);
            border-radius: 12px;
            padding: 12px;
            text-align: center;
            border: 1px solid rgba(10, 88, 202, 0.15);
        }

        .calc-result-val {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            font-family: 'Space Grotesk';
        }

        .calc-result-label {
            font-size: 10px;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        /* --- Custom Grid Services Layout --- */
        .services-timeline {
            padding: 100px 24px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .services-alternating {
            display: flex;
            flex-direction: column;
            gap: 80px;
            margin-top: 60px;
        }

        .alt-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            align-items: center;
            gap: 60px;
        }

        .alt-row:nth-child(even) {
            direction: rtl;
        }

        .alt-row:nth-child(even) .alt-text {
            direction: ltr;
        }

        .alt-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }

        .alt-card-wrapper {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius-lg);
            padding: 30px;
            box-shadow: var(--card-shadow);
            width: 100%;
            max-width: 440px;
            position: relative;
        }

        .network-badge-floating {
            position: absolute;
            top: -20px;
            right: -20px;
            background: var(--gradient-star);
            color: white;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 11px;
            font-weight: 800;
            box-shadow: 0 8px 16px rgba(10, 88, 202, 0.2);
            text-transform: uppercase;
        }

        .alt-icon-box {
            width: 60px;
            height: 60px;
            background: var(--primary-light);
            border-radius: 16px;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 24px;
        }

        .alt-title {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .alt-desc {
            color: var(--text-secondary);
            font-size: 16px;
            margin-bottom: 20px;
        }

        .alt-points {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .alt-point {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .alt-point i {
            color: var(--primary);
        }

        /* --- Dynamic Reseller Pricing --- */
        .pricing-universe {
            background: var(--bg-secondary);
            padding: 100px 24px;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .pricing-inner {
            max-width: 1200px;
            margin: 0 auto;
        }

        .network-selector-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin: 40px auto;
            max-width: 700px;
        }

        .network-tab-card {
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 20px;
            text-align: center;
            cursor: pointer;
            transition: all var(--transition-speed);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }

        .network-tab-card:hover {
            transform: translateY(-3px);
            border-color: var(--primary);
        }

        .network-tab-card.active {
            background: var(--gradient-star);
            border-color: transparent;
            color: white;
            box-shadow: 0 10px 25px rgba(10, 88, 202, 0.2);
        }

        .network-tab-card i {
            font-size: 22px;
        }

        .network-tab-card span {
            font-size: 13px;
            font-weight: 700;
        }

        .network-tab-card.active span {
            color: white;
        }

        .table-display-box {
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius-lg);
            padding: 30px;
            overflow-x: auto;
        }

        .vtu-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }

        .vtu-table th {
            padding: 16px 20px;
            font-size: 13px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: var(--text-muted);
            border-bottom: 2px solid var(--border-color);
        }

        .vtu-table td {
            padding: 18px 20px;
            font-size: 14px;
            font-weight: 600;
            border-bottom: 1px solid var(--border-color);
        }

        .vtu-table tr:last-child td {
            border-bottom: none;
        }

        .td-badge {
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 11px;
            font-weight: 700;
            display: inline-block;
        }

        .btn-table-order {
            background: var(--gradient-star);
            color: white;
            border: none;
            padding: 8px 16px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 12px;
            cursor: pointer;
            transition: transform 0.2s;
        }

        .btn-table-order:hover {
            transform: scale(1.05);
        }

        /* --- 🌌 The Cosmic Reseller Advantage --- */
        .cosmic-banner {
            padding: 100px 24px;
            background: var(--gradient-cosmic);
            color: white;
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cosmic-banner-content {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .cosmic-banner h2 {
            font-size: 46px;
            color: white;
            margin-bottom: 24px;
        }

        .cosmic-banner p {
            font-size: 18px;
            opacity: 0.9;
            margin-bottom: 40px;
            line-height: 1.7;
        }

        .cosmic-grid-advantages {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-bottom: 40px;
        }

        .advantage-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 24px;
            border-radius: 16px;
            text-align: center;
        }

        .advantage-item i {
            font-size: 32px;
            color: var(--accent-sky);
            margin-bottom: 16px;
        }

        .advantage-item h4 {
            font-size: 18px;
            color: white;
            margin-bottom: 8px;
        }

        .advantage-item p {
            font-size: 13px;
            opacity: 0.75;
            margin-bottom: 0;
            line-height: 1.5;
        }

        /* --- Side-by-Side FAQ Panel --- */
        .faq-galaxy {
            padding: 100px 24px;
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 0.8fr 1.2fr;
            gap: 60px;
        }

        .faq-galaxy-left {
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: all 0.3s;
        }

        .faq-head {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
        }

        .faq-head h4 {
            font-size: 16px;
            font-weight: 700;
        }

        .faq-chevron {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform 0.3s;
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 14px;
        }

        .faq-card.active {
            border-color: var(--primary);
        }

        .faq-card.active .faq-chevron {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-card.active .faq-body {
            max-height: 800px;
            padding: 0 24px 20px 24px;
            transition: max-height 0.3s cubic-bezier(1, 0, 1, 0), padding 0.3s ease;
        }

        /* --- Distinct contact segment --- */
        .contact-grid {
            padding: 100px 24px;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
        }

        .contact-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
        }

        .contact-left-card {
            background: var(--gradient-cosmic);
            color: white;
            border-radius: var(--border-radius-lg);
            padding: 48px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            position: relative;
            overflow: hidden;
        }

        .contact-left-card::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, transparent 70%);
        }

        .contact-left-card h2 {
            color: white;
            font-size: 38px;
            margin-bottom: 20px;
        }

        .contact-info-list {
            display: flex;
            flex-direction: column;
            gap: 30px;
            margin-top: 40px;
        }

        .contact-item-row {
            display: flex;
            align-items: flex-start;
            gap: 20px;
        }

        .contact-icon-wrapper {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--accent-sky);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        .contact-item-text h5 {
            color: white;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .contact-item-text p {
            color: #8EAECE;
            font-size: 14px;
            word-break: break-all;
        }

        .contact-right-panel {
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .contact-form-title {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 30px;
        }

        .form-block {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .form-block label {
            font-size: 13px;
            font-weight: 700;
            color: var(--text-secondary);
            margin-bottom: 8px;
            display: block;
        }

        .form-block input, .form-block textarea {
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 14px 18px;
            font-family: inherit;
            color: var(--text-primary);
            font-size: 14px;
            outline: none;
            width: 100%;
            transition: all var(--transition-speed);
        }

        .form-block input:focus, .form-block textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
        }

        .btn-launch-message {
            background: var(--gradient-star);
            color: white;
            border: none;
            padding: 16px 36px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 14px;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            box-shadow: 0 6px 20px rgba(10, 88, 202, 0.25);
            transition: all 0.3s;
            align-self: flex-start;
        }

        .btn-launch-message:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(56, 189, 248, 0.35);
        }

        /* --- Footer Layout --- */
        footer {
            background: #030814;
            color: #748A9E;
            padding: 80px 24px 30px 24px;
            border-top: 1px solid #162444;
        }

        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 0.6fr 0.6fr 0.8fr;
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-info {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

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

        .footer-logo-img {
            height: 44px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .footer-brand-name {
            font-size: 21px;
            font-weight: 800;
            background: linear-gradient(135deg, #FFFFFF 0%, #38BDF8 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .footer-brand-sub {
            font-size: 10px;
            font-weight: 700;
            color: #5F7D9C;
            letter-spacing: 2px;
        }

        .footer-info p {
            font-size: 14px;
            line-height: 1.6;
        }

        .footer-social-panel {
            display: flex;
            gap: 12px;
        }

        .social-node {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            text-decoration: none;
            transition: all 0.3s;
        }

        .social-node:hover {
            background: var(--primary);
            transform: translateY(-2px);
        }

        .footer-col h5 {
            color: white;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 24px;
            position: relative;
        }

        .footer-col h5::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--primary);
        }

        .footer-link-group {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-link-group a {
            color: #748A9E;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

        .footer-link-group a:hover {
            color: white;
        }

        .footer-news p {
            font-size: 14px;
            margin-bottom: 16px;
        }

        .news-form {
            display: flex;
            gap: 8px;
        }

        .news-form input {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            padding: 10px 14px;
            color: white;
            font-size: 14px;
            outline: none;
            flex-grow: 1;
        }

        .btn-news-submit {
            background: var(--gradient-star);
            border: none;
            width: 44px;
            height: 44px;
            border-radius: 8px;
            color: white;
            cursor: pointer;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s;
        }

        .btn-news-submit:hover {
            transform: scale(1.05);
        }

        .footer-base {
            max-width: 1200px;
            margin: 0 auto;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
        }

        .developer-mark {
            font-weight: 600;
        }

        .developer-mark span {
            color: #38BDF8;
        }

        /* --- Viewport Adjustments --- */

        /* Mid breakpoint: nav becomes icon-only button, menu hides early */
        @media (max-width: 900px) {
            .btn-app-label {
                display: none;
            }
            .btn-download-app {
                padding: 10px 12px;
                border-radius: 50%;
                width: 42px;
                height: 42px;
                justify-content: center;
            }
        }

        @media (max-width: 860px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: var(--bg-secondary);
                border-bottom: 1px solid var(--border-color);
                padding: 24px;
                flex-direction: column;
                gap: 20px;
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
                z-index: 999;
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-menu-btn {
                display: block;
            }
            .btn-app-label {
                display: none;
            }
            .btn-download-app {
                padding: 10px 12px;
                border-radius: 50%;
                width: 42px;
                height: 42px;
                justify-content: center;
            }
        }

        @media (max-width: 992px) {
            .hero-title {
                font-size: 42px;
            }
            .stellar-card-float {
                grid-template-columns: 1fr;
                max-width: 500px;
            }
            .network-signal-widget {
                border-right: none;
                border-bottom: 1px solid var(--border-color);
                padding-right: 0;
                padding-bottom: 20px;
            }
            .alt-row {
                grid-template-columns: 1fr;
                gap: 40px;
                text-align: center;
            }
            .alt-row:nth-child(even) {
                direction: ltr;
            }
            .alt-card-wrapper {
                margin: 0 auto;
            }
            .cosmic-grid-advantages {
                grid-template-columns: 1fr;
            }
            .contact-inner {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            /* nav-links already handled at 860px breakpoint */
            .network-selector-grid {
                grid-template-columns: 1fr 1fr;
            }
            .faq-galaxy {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-base {
                flex-direction: column;
                gap: 15px;
                text-align: center;
            }
        }