body {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans JP', Roboto, sans-serif;
            line-height: 1.6;
            color: #333;
            background: #fff;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        header {
            background: #fff;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
        }

        .header-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.5rem;
            font-weight: 700;
            color: #0066CC;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: #0066CC;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
        }

        .cta-button {
            background: #0066CC;
            color: white;
            padding: 12px 24px;
            border-radius: 25px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
        }

        .cta-button:hover {
            background: #0052A3;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 102, 204, 0.4);
        }

        .hero {
            background: linear-gradient(135deg, #0066CC 0%, #004499 100%);
            color: white;
            text-align: center;
            padding: 100px 0;
        }

        .hero h1 {
            font-size: 4rem;
            margin-bottom: 1rem;
            font-weight: 800;
            letter-spacing: -0.02em;
        }

        .hero .subtitle {
            font-size: 1.5rem;
            margin-bottom: 3rem;
            opacity: 0.95;
            font-weight: 400;
        }

        .hero-cta {
            display: inline-block;
            background: white;
            color: #0066CC;
            padding: 18px 40px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            font-size: 1.2rem;
            transition: all 0.3s;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
        }

        .hero-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
        }

        .section {
            padding: 80px 0;
        }

        .section:nth-child(even) {
            background: #fafafa;
        }

        .section h2 {
            color: #333;
            margin-bottom: 3rem;
            font-size: 2.5rem;
            font-weight: 700;
            text-align: center;
            letter-spacing: -0.02em;
        }

        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 3rem;
            margin-top: 3rem;
        }

        .feature {
            text-align: center;
            padding: 2rem;
        }

.feature-icon img {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
    margin-bottom: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-icon img:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 14px rgba(0,0,0,0.25);
}

@media (max-width: 768px) {
    .feature-icon img {
        width: 60px;
        height: 60px;
        margin-bottom: 15px;
    }
}


        .feature h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: #333;
        }

        .feature p {
            color: #666;
            font-size: 1.1rem;
            line-height: 1.7;
        }

        .steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .step {
            text-align: center;
            padding: 2rem;
            background: white;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s;
        }

        .step:hover {
            transform: translateY(-5px);
        }

        .step-number {
            width: 60px;
            height: 60px;
            background: #0066CC;
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: bold;
            margin: 0 auto 1.5rem auto;
        }

        .step h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: #333;
        }

        .qr-section {
            text-align: center;
            background: linear-gradient(135deg, #0066CC, #004499);
            color: white;
            padding: 80px 0;
        }

        .qr-section h2 {
            color: white;
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }

        .qr-section p {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            opacity: 0.95;
        }

        .qr-placeholder {
            width: 200px;
            height: 200px;
            background: white;
            border-radius: 16px;
            margin: 2rem auto;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #666;
            font-weight: 600;
        }

        .stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin: 4rem 0;
        }

        .stat {
            text-align: center;
            padding: 2rem;
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: #0066CC;
            margin-bottom: 0.5rem;
        }

        .stat-label {
            font-size: 1.1rem;
            color: #666;
            font-weight: 500;
        }

        .alerts-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 2rem;
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }

        .alerts-table th {
            background: #0066CC;
            color: white;
            padding: 1.5rem;
            text-align: left;
            font-weight: 600;
            font-size: 1.1rem;
        }

        .alerts-table td {
            padding: 1.5rem;
            border-bottom: 1px solid #f0f0f0;
            font-size: 1rem;
        }

        .alerts-table tr:hover {
            background: #f9f9f9;
        }

        .alerts-table td:nth-child(2),
        .alerts-table td:nth-child(3),
        .alerts-table th:nth-child(2),
        .alerts-table th:nth-child(3) {
            white-space: nowrap;
            text-align: center;
            vertical-align: middle;
            width: 130px;
        }

@media (max-width: 768px) {
    .alerts-table,
    .alerts-table thead,
    .alerts-table tbody,
    .alerts-table th,
    .alerts-table td,
    .alerts-table tr {
        display: block;
        width: 100%;
    }

    .alerts-table thead {
        display: none; 
    }

    .alerts-table tr {
        margin-bottom: 1.5rem;
        border: 1px solid #e0e0e0;
        border-radius: 10px;
        box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
        background: #fff;
        padding: 1rem;
    }

    .alerts-table td {
        border: none;
        padding: 0.3rem 0;
        position: relative;
        text-align: left;
        font-size: 0.95rem;
        white-space: normal;
        word-break: break-word;
    }


    .alerts-table td:nth-child(1)::before {
        content: "警報内容：";
        font-weight: 700;
        color: #0066CC;
        display: block;
        margin-bottom: 0.3rem;
    }

    .alerts-table td:nth-child(2)::before {
        content: "発令時刻：";
        font-weight: 700;
        color: #0066CC;
        display: block;
        margin-top: 0.8rem;
        margin-bottom: 0.3rem;
    }

    .alerts-table td:nth-child(3)::before {
        content: "警戒終了：";
        font-weight: 700;
        color: #0066CC;
        display: block;
        margin-top: 0.8rem;
        margin-bottom: 0.3rem;
    }
}



        .alert-ended {
            opacity: 0.7;
        }

        .faq {
            max-width: 800px;
            margin: 3rem auto 0;
        }

        .faq-item {
            margin-bottom: 1rem;
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }

        .faq-question {
            background: white;
            padding: 1.5rem;
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background 0.3s;
        }

        .faq-question:hover {
            background: #f9f9f9;
        }

        .faq-answer {
            padding: 1.5rem;
            background: #fafafa;
            border-top: 1px solid #f0f0f0;
            color: #666;
            line-height: 1.7;
        }

        .developer-message {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            padding: 80px 0;
            text-align: center;
        }

        .developer-message h2 {
            color: white;
            margin-bottom: 2rem;
        }

        .developer-message p {
            font-size: 1.2rem;
            line-height: 1.8;
            margin-bottom: 1.5rem;
            opacity: 0.95;
        }

        footer {
            background: #333;
            color: white;
            text-align: center;
            padding: 3rem 0;
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s;
        }

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

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }

            .hero .subtitle {
                font-size: 1.2rem;
            }

            .section h2 {
                font-size: 2rem;
            }

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

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

            .stats {
                grid-template-columns: repeat(2, 1fr);
            }

            .alerts-table {
                font-size: 0.9rem;
            }

            .alerts-table th,
            .alerts-table td {
                padding: 1rem;
            }

            .footer-links {
                flex-direction: column;
                gap: 1rem;
            }
        }


@media (max-width: 768px) {
    .features {
        gap: 1.5rem; 
        margin-top: 2rem; 
    }

    .feature {
        padding: 1rem 1rem 1.5rem 1rem; 
    }
}


        body {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans JP', Roboto, sans-serif;
            line-height: 1.6;
            color: #333;
            background: #fff;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }


        .header-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.5rem;
            font-weight: 700;
            color: #0066CC;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: #0066CC;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
        }

        .cta-button {
            background: #0066CC;
            color: white;
            padding: 12px 24px;
            border-radius: 25px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
        }

        .cta-button:hover {
            background: #0052A3;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 102, 204, 0.4);
        }

        .hero {
            background: linear-gradient(135deg, #0066CC 0%, #004499 100%);
            color: white;
            text-align: center;
            padding: 100px 0;
        }

        .hero h1 {
            font-size: 4rem;
            margin-bottom: 1rem;
            font-weight: 800;
            letter-spacing: -0.02em;
        }

        .hero .subtitle {
            font-size: 1.5rem;
            margin-bottom: 3rem;
            opacity: 0.95;
            font-weight: 400;
        }

        .hero-cta {
            display: inline-block;
            background: white;
            color: #0066CC;
            padding: 18px 40px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            font-size: 1.2rem;
            transition: all 0.3s;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
        }

        .hero-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
        }

        .section {
            padding: 80px 0;
        }

        .section:nth-child(even) {
            background: #fafafa;
        }

        .section h2 {
            color: #333;
            margin-bottom: 3rem;
            font-size: 2.5rem;
            font-weight: 700;
            text-align: center;
            letter-spacing: -0.02em;
        }

        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 3rem;
            margin-top: 3rem;
        }

        .feature {
            text-align: center;
            padding: 2rem;
        }

.feature-icon img {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
    margin-bottom: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-icon img:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 14px rgba(0,0,0,0.25);
}

@media (max-width: 768px) {
    .feature-icon img {
        width: 60px;
        height: 60px;
        margin-bottom: 15px;
    }
}


        .feature h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: #333;
        }

        .feature p {
            color: #666;
            font-size: 1.1rem;
            line-height: 1.7;
        }

        .steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .step {
            text-align: center;
            padding: 2rem;
            background: white;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s;
        }

        .step:hover {
            transform: translateY(-5px);
        }

        .step-number {
            width: 60px;
            height: 60px;
            background: #0066CC;
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: bold;
            margin: 0 auto 1.5rem auto;
        }

        .step h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: #333;
        }

        .qr-section {
            text-align: center;
            background: linear-gradient(135deg, #0066CC, #004499);
            color: white;
            padding: 80px 0;
        }

        .qr-section h2 {
            color: white;
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }

        .qr-section p {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            opacity: 0.95;
        }

        .qr-placeholder {
            width: 200px;
            height: 200px;
            background: white;
            border-radius: 16px;
            margin: 2rem auto;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #666;
            font-weight: 600;
        }

        .stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin: 4rem 0;
        }

        .stat {
            text-align: center;
            padding: 2rem;
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: #0066CC;
            margin-bottom: 0.5rem;
        }

        .stat-label {
            font-size: 1.1rem;
            color: #666;
            font-weight: 500;
        }

        .alerts-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 2rem;
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }

        .alerts-table th {
            background: #0066CC;
            color: white;
            padding: 1.5rem;
            text-align: left;
            font-weight: 600;
            font-size: 1.1rem;
        }

        .alerts-table td {
            padding: 1.5rem;
            border-bottom: 1px solid #f0f0f0;
            font-size: 1rem;
        }

        .alerts-table tr:hover {
            background: #f9f9f9;
        }

        .alerts-table td:nth-child(2),
        .alerts-table td:nth-child(3),
        .alerts-table th:nth-child(2),
        .alerts-table th:nth-child(3) {
            white-space: nowrap;
            text-align: center;
            vertical-align: middle;
            width: 130px;
        }

@media (max-width: 768px) {
    .alerts-table,
    .alerts-table thead,
    .alerts-table tbody,
    .alerts-table th,
    .alerts-table td,
    .alerts-table tr {
        display: block;
        width: 100%;
    }

    .alerts-table thead {
        display: none; 
    }

    .alerts-table tr {
        margin-bottom: 1.5rem;
        border: 1px solid #e0e0e0;
        border-radius: 10px;
        box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
        background: #fff;
        padding: 1rem;
    }

    .alerts-table td {
        border: none;
        padding: 0.3rem 0;
        position: relative;
        text-align: left;
        font-size: 0.95rem;
        white-space: normal;
        word-break: break-word;
    }

    .alerts-table td:nth-child(1)::before {
        content: "警報内容：";
        font-weight: 700;
        color: #0066CC;
        display: block;
        margin-bottom: 0.3rem;
    }

    .alerts-table td:nth-child(2)::before {
        content: "発令時刻：";
        font-weight: 700;
        color: #0066CC;
        display: block;
        margin-top: 0.8rem;
        margin-bottom: 0.3rem;
    }

    .alerts-table td:nth-child(3)::before {
        content: "警戒終了：";
        font-weight: 700;
        color: #0066CC;
        display: block;
        margin-top: 0.8rem;
        margin-bottom: 0.3rem;
    }

    body.en .alerts-table td:nth-child(1)::before {
        content: "Alert Summary: ";
    }
    body.en .alerts-table td:nth-child(2)::before {
        content: "Issued: ";
    }
    body.en .alerts-table td:nth-child(3)::before {
        content: "Expires: ";
    }

    
}

        .alert-ended {
            opacity: 0.7;
        }

        .faq {
            max-width: 800px;
            margin: 3rem auto 0;
        }

        .faq-item {
            margin-bottom: 1rem;
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }

        .faq-question {
            background: white;
            padding: 1.5rem;
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background 0.3s;
        }

        .faq-question:hover {
            background: #f9f9f9;
        }

        .faq-answer {
            padding: 1.5rem;
            background: #fafafa;
            border-top: 1px solid #f0f0f0;
            color: #666;
            line-height: 1.7;
        }

        .developer-message {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            padding: 80px 0;
            text-align: center;
        }

        .developer-message h2 {
            color: white;
            margin-bottom: 2rem;
        }

        .developer-message p {
            font-size: 1.2rem;
            line-height: 1.8;
            margin-bottom: 1.5rem;
            opacity: 0.95;
        }

        footer {
            background: #333;
            color: white;
            text-align: center;
            padding: 3rem 0;
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s;
        }

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

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }

            .hero .subtitle {
                font-size: 1.2rem;
            }

            .section h2 {
                font-size: 2rem;
            }

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

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

            .stats {
                grid-template-columns: repeat(2, 1fr);
            }

            .alerts-table {
                font-size: 0.9rem;
            }

            .alerts-table th,
            .alerts-table td {
                padding: 1rem;
            }

            .footer-links {
                flex-direction: column;
                gap: 1rem;
            }
        }


.alerts-table {
    width: 100%;
    max-width: 100%;
    table-layout: fixed;
    border-collapse: collapse;
    display: block;
    overflow-x: auto; 
}

.alerts-table td, 
.alerts-table th {
    white-space: normal !important; 
    word-break: break-all;
    overflow-wrap: anywhere;
    text-align: left;
    line-height: 1.7;
}

@media (max-width: 768px) {
    .alerts-table {
        display: block;
        width: 100%;
        table-layout: fixed;
        overflow-x: auto;
    }

    .alerts-table tr {
        display: block;
        width: 100%;
        box-sizing: border-box;
    }

    .alerts-table td {
        display: block;
        width: 100%;
        word-break: break-all;
        padding: 0.8rem 0;
        border-bottom: 1px solid #eee;
    }
}