:root {
            --primary-color: #2563eb;
            --secondary-color: #0d47a1;
            --accent-color: #10b981;
            --accent-secondary: #7c3aed;
            --text-color: #1e293b;
            --light-bg: #f8fafc;
            --dark-bg: #0f172a;
            --white: #ffffff;
            --gray: #e2e8f0;
            --gray-light: #f1f5f9;
            --border-color: #cbd5e1;
            --success-color: #10b981;
            --danger-color: #ef4444;
            --warning-color: #f59e0b;
            --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --line-color: #10b981;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
            -webkit-tap-highlight-color: transparent;
        }
        
        body {
            background-color: var(--light-bg);
            color: var(--text-color);
            font-size: 16px;
            line-height: 1.5;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        a {
            text-decoration: none;
            color: var(--primary-color);
        }
        
        .app-container {
            max-width: 100%;
            margin: 0 auto;
            position: relative;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        
        /* App Header */
        .app-header {
            background-color: var(--white);
            padding: 15px 20px;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 100;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .app-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-color);
            display: flex;
            align-items: center;
        }
        
        .app-logo span {
            color: var(--accent-color);
        }
        
        .app-logo-icon {
            margin-right: 8px;
            font-size: 24px;
        }
        
        .back-button {
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-color);
            cursor: pointer;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
        }
        
        .back-button:active {
            background-color: var(--gray-light);
        }
        
        /* App Content */
        .app-content {
            flex: 1;
            padding-bottom: 60px; /* Space for bottom nav */
        }
        
        /* Page Title */
        .page-title {
            padding: 20px;
            text-align: center;
            font-size: 24px;
            font-weight: 700;
            color: var(--dark-bg);
        }
        
        /* Hero Banner */
        .bonus-hero {
            margin: 0 20px 30px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-secondary));
            border-radius: 12px;
            padding: 25px 20px;
            color: var(--white);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .hero-title {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        
        .hero-text {
            font-size: 16px;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }
        
        .hero-pattern {
            position: absolute;
            bottom: -30px;
            right: -30px;
            width: 150px;
            height: 150px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
        }
        
        .hero-pattern::before {
            content: "";
            position: absolute;
            top: -15px;
            left: -15px;
            width: 100px;
            height: 100px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
        }
        
        /* Bonus Cards */
        .bonus-section {
            padding: 0 20px 30px;
        }
        
        .section-header {
            margin-bottom: 20px;
        }
        
        .section-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark-bg);
            margin-bottom: 5px;
        }
        
        .section-subtitle {
            font-size: 14px;
            color: #64748b;
        }
        
        .bonus-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        
        .bonus-card {
            background-color: var(--white);
            border-radius: 12px;
            box-shadow: var(--card-shadow);
            overflow: hidden;
            position: relative;
        }
        
        .bonus-card.limited::after {
            content: "期間限定";
            position: absolute;
            top: 15px;
            right: 0;
            background-color: var(--danger-color);
            color: var(--white);
            padding: 5px 10px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 4px 0 0 4px;
        }
        
        .bonus-card.exclusive::after {
            content: "当サイト限定";
            position: absolute;
            top: 15px;
            right: 0;
            background-color: var(--accent-secondary);
            color: var(--white);
            padding: 5px 10px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 4px 0 0 4px;
        }
        
        .bonus-header {
            padding: 20px;
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--gray);
        }
        
        .bonus-logo {
            width: 60px;
            height: 60px;
            border-radius: 12px;
            background-color: var(--gray-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            font-size: 30px;
            font-weight: 700;
            flex-shrink: 0;
        }
        
        .bonus-logo.bg-primary {
            background-color: var(--primary-color);
            color: var(--white);
        }
        
        .bonus-logo.bg-success {
            background-color: var(--success-color);
            color: var(--white);
        }
        
        .bonus-logo.bg-purple {
            background-color: var(--accent-secondary);
            color: var(--white);
        }
        
        .bonus-name {
            flex: 1;
        }
        
        .bonus-service {
            font-size: 14px;
            color: #64748b;
            margin-bottom: 5px;
        }
        
        .bonus-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark-bg);
        }
        
        .bonus-content {
            padding: 20px;
        }
        
        .bonus-amount {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary-color);
            margin-bottom: 15px;
        }
        
        .bonus-description {
            margin-bottom: 15px;
        }
        
        .bonus-conditions {
            font-size: 14px;
            color: #64748b;
            margin-bottom: 20px;
        }
        
        .bonus-expire {
            display: flex;
            align-items: center;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        
        .expire-icon {
            margin-right: 5px;
            color: var(--warning-color);
        }
        
        .bonus-cta {
            text-align: center;
        }
        
        .bonus-button {
            display: inline-block;
            background-color: var(--primary-color);
            color: var(--white);
            padding: 12px 30px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 16px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        }
        
        .bonus-button:active {
            transform: translateY(1px);
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
        }
        
        /* Comparison Table */
        .comparison-section {
            padding: 0 20px 30px;
        }
        
        .comparison-table {
            width: 100%;
            background-color: var(--white);
            border-radius: 12px;
            box-shadow: var(--card-shadow);
            overflow: hidden;
            border-collapse: collapse;
        }
        
        .comparison-table th,
        .comparison-table td {
            padding: 12px 15px;
            text-align: left;
        }
        
        .comparison-table thead th {
            background-color: var(--primary-color);
            color: var(--white);
            font-weight: 600;
            border-bottom: 1px solid var(--gray);
        }
        
        .comparison-table tbody tr {
            border-bottom: 1px solid var(--gray);
        }
        
        .comparison-table tbody tr:last-child {
            border-bottom: none;
        }
        
        .compare-service {
            font-weight: 600;
        }
        
        .check-mark {
            color: var(--success-color);
            font-weight: bold;
        }
        
        .x-mark {
            color: var(--danger-color);
            font-weight: bold;
        }
        
        /* Scrollable table on mobile */
        .table-container {
            width: 100%;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        
        /* Newsletter Section */
        .newsletter-section {
            margin: 0 20px 30px;
            background-color: var(--gray-light);
            border-radius: 12px;
            padding: 20px;
            text-align: center;
        }
        
        .newsletter-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        
        .newsletter-text {
            margin-bottom: 15px;
            color: var(--text-color);
        }
        
        .newsletter-form {
            display: flex;
            max-width: 100%;
            margin: 0 auto;
        }
        
        .newsletter-input {
            flex: 1;
            padding: 10px 15px;
            border: 1px solid var(--border-color);
            border-radius: 8px 0 0 8px;
            font-size: 14px;
            outline: none;
        }
        
        .newsletter-button {
            background-color: var(--primary-color);
            color: var(--white);
            padding: 10px 15px;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            display: inline-block;
            text-align: center;
            width: auto;
        }
        
        .newsletter-button.line {
            background-color: var(--line-color);
        }
        
        /* Bottom Navigation */
        .bottom-nav {
            background-color: var(--white);
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            box-shadow: 0 -1px 3px rgba(0, 0, 0, 0.1);
            z-index: 100;
        }
        
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 10px 0;
            color: #64748b;
        }
        
        .nav-item.active {
            color: var(--primary-color);
        }
        
        .nav-icon {
            font-size: 20px;
            margin-bottom: 4px;
        }
        
        .nav-label {
            font-size: 12px;
            font-weight: 500;
        }