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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: "Hiragino Kaku Gothic ProN", "ヒラギノ角ゴ ProN W3", Meiryo, メイリオ, sans-serif;
        line-height: 1.8;
        color: #333;
    }

    .header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        z-index: 1000;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }

    .header-top {
        background: #f09600;
        padding: 8px 0;
        text-align: center;
        color: white;
        font-size: 0.9rem;
    }

    .header-main {
        padding: 15px 0;
    }

    .header-container {
        max-width: 1400px;
        margin: 0 auto;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0 30px;
    }

    @media (max-width: 1024px) {
        .header-container {
            padding: 0 15px;
        }

        .logo {
            height: 40px;
            max-width: 150px;
        }

        .header-btn-secondary,
        .header-btn {
            padding: 8px 15px;
            font-size: 0.85rem;
        }

        .header-buttons {
            gap: 10px;
        }
    }

    @media (max-width: 768px) {
        .nav-links {
            display: none;
        }

        .header-container {
            padding: 0 15px;
        }

        .logo {
            height: 35px;
            max-width: 120px;
        }

        .header-btn-secondary,
        .header-btn {
            padding: 8px 12px;
            font-size: 0.8rem;
        }

        .header-buttons {
            gap: 8px;
        }
    }

    @media (max-width: 480px) {
        .logo {
            height: 30px;
            max-width: 100px;
        }

        .header-btn-secondary,
        .header-btn {
            padding: 6px 10px;
            font-size: 0.75rem;
        }
    }

    .logo {
        height: 50px;
        width: auto;
        max-width: 200px;
        object-fit: contain;
    }

    .nav-links {
        display: flex;
        list-style: none;
        gap: 35px;
        align-items: center;
    }

    .nav-links a {
        text-decoration: none;
        color: #333;
        font-weight: 600;
        font-size: 1rem;
        transition: color 0.3s ease;
    }

    .nav-links a:hover {
        color: #f09600;
    }

    .header-buttons {
        display: flex;
        gap: 15px;
        align-items: center;
        flex-shrink: 0;
    }

    .header-btn-secondary {
        background: white;
        color: #f09600;
        border: 2px solid #f09600;
        padding: 10px 20px;
        border-radius: 25px;
        text-decoration: none;
        font-weight: bold;
        font-size: 0.9rem;
        transition: all 0.3s ease;
        white-space: nowrap;
    }

    .header-btn {
        background: #f09600;
        color: white;
        padding: 12px 25px;
        border-radius: 25px;
        text-decoration: none;
        font-weight: bold;
        font-size: 0.9rem;
        transition: all 0.3s ease;
        white-space: nowrap;
    }

    .header-btn:hover {
        background: #d68500;
        transform: translateY(-2px);
        box-shadow: 0 5px 15px rgba(240, 150, 0, 0.3);
    }

    .header-btn {
        background: #f09600;
        color: white;
        padding: 12px 30px;
        border-radius: 25px;
        text-decoration: none;
        font-weight: bold;
        transition: all 0.3s ease;
    }

    .header-btn:hover {
        background: #d68500;
        transform: translateY(-2px);
        box-shadow: 0 5px 15px rgba(240, 150, 0, 0.3);
    }

    .hero {
        position: relative;
        height: 100vh;
        margin-top: 110px;
        overflow: hidden;
    }

    .hero-slider {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }

    .hero-slide {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        opacity: 0;
        transition: opacity 1.5s ease-in-out;
    }

    .hero-slide.active {
        opacity: 1;
    }

    .hero-slide img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        filter: brightness(0.7);
    }

    .hero-slide-placeholder {
        width: 100%;
        height: 100%;
        background: linear-gradient(135deg, #f09600 0%, #ffb84d 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 1.5rem;
    }

    .hero-overlay {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(135deg, rgba(240, 150, 0, 0.4) 0%, rgba(110, 181, 217, 0.3) 100%);
        z-index: 1;
    }

    .hero-content {
        position: relative;
        z-index: 2;
        height: 100%;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        text-align: center;
        color: white;
        padding: 0 20px;
    }

    .hero-title {
        font-size: 3.5rem;
        font-weight: bold;
        margin-bottom: 20px;
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
        animation: fadeInUp 1s ease-out;
    }

    .hero-subtitle {
        font-size: 1.5rem;
        margin-bottom: 40px;
        text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
        animation: fadeInUp 1.2s ease-out;
    }

    .hero-search {
        background: white;
        padding: 30px;
        border-radius: 15px;
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
        max-width: 700px;
        width: 100%;
        animation: fadeInUp 1.4s ease-out;
    }

    .search-title {
        color: #333;
        font-size: 1.3rem;
        font-weight: bold;
        margin-bottom: 20px;
        text-align: center;
    }

    .search-form {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 120px;
        gap: 10px;
    }

    .search-input,
    .search-select,
    .search-date {
        padding: 15px 20px;
        border: 2px solid #e0e0e0;
        border-radius: 10px;
        font-size: 1rem;
        transition: border-color 0.3s ease;
    }

    .search-input:focus,
    .search-select:focus,
    .search-date:focus {
        outline: none;
        border-color: #f09600;
    }

    .search-select {
        cursor: pointer;
    }

    @media (max-width: 768px) {
        .search-form {
            grid-template-columns: 1fr;
        }
    }

    .search-input:focus {
        outline: none;
        border-color: #f09600;
    }

    .search-btn {
        background: linear-gradient(135deg, #f09600 0%, #ff9a1f 100%);
        color: white;
        padding: 15px 40px;
        border: none;
        border-radius: 10px;
        font-size: 1rem;
        font-weight: bold;
        cursor: pointer;
        transition: all 0.3s ease;
    }

    .search-btn:hover {
        background: linear-gradient(135deg, #d68500 0%, #f09600 100%);
        transform: translateY(-2px);
        box-shadow: 0 5px 15px rgba(110, 181, 217, 0.4);
    }

    .hero-indicators {
        position: absolute;
        bottom: 30px;
        left: 50%;
        transform: translateX(-50%);
        display: flex;
        gap: 10px;
        z-index: 2;
    }

    .indicator {
        width: 12px;
        height: 12px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.5);
        cursor: pointer;
        transition: all 0.3s ease;
    }

    .indicator.active {
        background: white;
        width: 30px;
        border-radius: 6px;
    }

    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 80px 30px;
    }

    .section-title {
        font-size: 2.5rem;
        text-align: center;
        margin-bottom: 15px;
        color: #333;
    }

    .section-title::after {
        content: '';
        display: block;
        width: 80px;
        height: 4px;
        background: linear-gradient(90deg, #f09600 0%, #4caf50 100%);
        margin: 15px auto 0;
        border-radius: 2px;
    }

    .section-subtitle {
        text-align: center;
        font-size: 1.1rem;
        color: #666;
        margin-bottom: 50px;
    }

    .new-helps-section {
        background: linear-gradient(180deg, #f9f9f9 0%, #f0f8fc 100%);
    }

    .helps-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 25px;
    }

    .help-card {
        background: white;
        border-radius: 15px;
        overflow: hidden;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        transition: all 0.3s ease;
        cursor: pointer;
    }

    .help-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    }

    .help-image-container {
        width: 100%;
        height: 200px;
        overflow: hidden;
        position: relative;
    }

    .help-image {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.3s ease;
    }

    .help-card:hover .help-image {
        transform: scale(1.1);
    }

    .help-image-placeholder {
        width: 100%;
        height: 100%;
        background: linear-gradient(135deg, #f09600 0%, #ffb84d 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 0.9rem;
    }

    .help-tag {
        position: absolute;
        top: 10px;
        left: 10px;
        background: #f09600;
        color: white;
        padding: 5px 12px;
        border-radius: 20px;
        font-size: 0.85rem;
        font-weight: bold;
    }

    .help-tag.blue {
        background: #4caf50;
    }

    .help-content {
        padding: 20px;
    }

    .help-title {
        font-size: 1.1rem;
        font-weight: bold;
        margin-bottom: 10px;
        color: #333;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .help-info {
        display: flex;
        align-items: center;
        gap: 15px;
        font-size: 0.9rem;
        color: #666;
        margin-bottom: 10px;
    }

    .help-info span {
        display: flex;
        align-items: center;
        gap: 5px;
    }

    .help-price {
        font-size: 1.3rem;
        font-weight: bold;
        color: #f09600;
    }

    .about-section {
        background: white;
    }

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

    .about-image-container {
        width: 100%;
        height: 400px;
        border-radius: 20px;
        overflow: hidden;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }

    .about-image-placeholder {
        width: 100%;
        height: 100%;
        background: linear-gradient(135deg, #f09600 0%, #ffb84d 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 1.2rem;
    }

    .about-text h3 {
        font-size: 2rem;
        color: #333;
        margin-bottom: 20px;
    }

    .about-text p {
        font-size: 1.1rem;
        line-height: 2;
        color: #555;
        margin-bottom: 20px;
    }

    .about-features {
        list-style: none;
        margin-top: 30px;
    }

    .about-features li {
        padding: 15px 0;
        border-bottom: 1px solid #e0e0e0;
        display: flex;
        align-items: center;
        font-size: 1.05rem;
    }

    .about-features li:last-child {
        border-bottom: none;
    }

    .about-features li::before {
        content: "✓";
        color: #f09600;
        font-size: 1.5rem;
        font-weight: bold;
        margin-right: 15px;
    }

    .about-features li:nth-child(even)::before {
        color: #4caf50;
    }

    .popular-section {
        background: linear-gradient(180deg, #fff5eb 0%, #f0f8fc 100%);
    }

    .popular-tabs {
        display: flex;
        justify-content: center;
        gap: 20px;
        margin-bottom: 40px;
    }

    .tab-btn {
        background: white;
        border: 2px solid #e0e0e0;
        padding: 12px 30px;
        border-radius: 25px;
        font-size: 1rem;
        font-weight: bold;
        cursor: pointer;
        transition: all 0.3s ease;
        color: #666;
    }

    .tab-btn.active,
    .tab-btn:hover {
        background: #f09600;
        border-color: #f09600;
        color: white;
    }

    .articles-section {
        background: white;
    }

    .articles-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
    }

    .article-card {
        background: white;
        border-radius: 15px;
        overflow: hidden;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        transition: all 0.3s ease;
        cursor: pointer;
    }

    .article-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 30px rgba(110, 181, 217, 0.2);
    }

    .article-image-container {
        width: 100%;
        height: 220px;
        overflow: hidden;
    }

    .article-image-placeholder {
        width: 100%;
        height: 100%;
        background: linear-gradient(135deg, #f09600 0%, #ffb84d 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 1rem;
    }

    .article-content {
        padding: 25px;
    }

    .article-date {
        color: #999;
        font-size: 0.9rem;
        margin-bottom: 10px;
    }

    .article-title {
        font-size: 1.2rem;
        font-weight: bold;
        color: #333;
        margin-bottom: 12px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .article-excerpt {
        color: #666;
        font-size: 0.95rem;
        line-height: 1.6;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .faq-section {
        background: #f9f9f9;
    }

    .faq-container {
        max-width: 900px;
        margin: 0 auto;
    }

    .faq-item {
        background: white;
        border-radius: 15px;
        margin-bottom: 20px;
        overflow: hidden;
        box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
    }

    .faq-question {
        padding: 25px 30px;
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-weight: bold;
        color: #333;
        font-size: 1.1rem;
        transition: background 0.3s ease;
    }

    .faq-question:hover {
        background: #fff5eb;
    }

    .faq-question::before {
        content: "Q";
        display: inline-block;
        width: 40px;
        height: 40px;
        background: #f09600;
        color: white;
        border-radius: 50%;
        text-align: center;
        line-height: 40px;
        margin-right: 20px;
        font-weight: bold;
        flex-shrink: 0;
    }

    .faq-icon {
        font-size: 1.5rem;
        color: #f09600;
        transition: transform 0.3s ease;
        flex-shrink: 0;
    }

    .faq-item.active .faq-icon {
        transform: rotate(180deg);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .faq-item.active .faq-answer {
        max-height: 500px;
    }

    .faq-answer-content {
        padding: 25px 30px 25px 90px;
        color: #555;
        line-height: 1.8;
    }

    .footer {
        background: #2c2c2c;
        color: white;
        padding: 60px 30px 30px;
    }

    .footer-content {
        max-width: 1200px;
        margin: 0 auto;
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 50px;
        margin-bottom: 40px;
    }

    .footer-about {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-logo {
        height: 100px;
        width: auto;
        margin-bottom: 25px;
    }

    .footer-description {
        color: #ccc;
        line-height: 1.8;
        margin-bottom: 20px;
        max-width: 300px;
    }

    .footer-section h4 {
        font-size: 1.2rem;
        margin-bottom: 20px;
        color: #f09600;
    }

    .footer-links {
        list-style: none;
    }

    .footer-links li {
        margin-bottom: 12px;
    }

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

    .footer-links a:hover {
        color: #f09600;
    }

    .footer-bottom {
        text-align: center;
        padding-top: 30px;
        border-top: 1px solid #444;
        color: #999;
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(30px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    @media (max-width: 1024px) {
        .helps-grid {
            grid-template-columns: repeat(2, 1fr);
        }

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

        .about-content {
            grid-template-columns: 1fr;
        }

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

    @media (max-width: 768px) {
        .nav-links {
            display: none;
        }

        .hero-title {
            font-size: 2rem;
        }

        .hero-subtitle {
            font-size: 1.1rem;
        }

        .search-form {
            flex-direction: column;
        }

        .helps-grid,
        .articles-grid {
            grid-template-columns: 1fr;
        }

        .popular-tabs {
            flex-wrap: wrap;
        }

        .footer-content {
            grid-template-columns: 1fr;
        }
    }

/* CTAバナーセクション */
.cta-banner { padding: 30px; position: relative; overflow: hidden; }
.cta-banner::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; opacity: .1; background-image: radial-gradient(circle at 20% 50%, white 2px, transparent 2px), radial-gradient(circle at 80% 50%, white 2px, transparent 2px); background-size: 50px 50px; }
.cta-banner-1 { background: linear-gradient(135deg, #ff9a1f 0%, #ff6b35 100%); }
.cta-banner-2 { background: linear-gradient(135deg, #4caf50 0%, #66bb6a 100%); }
.cta-banner-3 { background: linear-gradient(135deg, #ff9a1f 0%, #ffc107 100%); }
.cta-banner-4 { background: linear-gradient(135deg, #66bb6a 0%, #81c784 100%); }
.cta-content { display: flex; align-items: center; justify-content: space-between; gap: 40px; max-width: 1200px; margin: 0 auto; position: relative; z-index: 1; }
.cta-icon { font-size: 4rem; flex-shrink: 0; animation: bounce 2s infinite; }
.cta-text { flex: 1; color: white; }
.cta-title { font-size: 1.8rem; font-weight: bold; margin-bottom: 10px; text-shadow: 1px 1px 2px rgba(0,0,0,.2); }
.cta-description { font-size: 1.1rem; opacity: .95; }
.cta-btn { background: white; color: #f09600; padding: 18px 40px; border-radius: 30px; text-decoration: none; font-weight: bold; font-size: 1.5rem; flex-shrink: 0; transition: all .3s ease; box-shadow: 0 5px 20px rgba(0,0,0,.2); }
.cta-btn:hover { transform: translateY(-3px) scale(1.05); box-shadow: 0 10px 30px rgba(0,0,0,.3); color: #d68500; }
@keyframes bounce { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@media (max-width: 768px) {
    .cta-content { flex-direction: column; text-align: center; gap: 20px; }
    .cta-icon { font-size: 3rem; }
    .cta-title { font-size: 1.4rem; }
    .cta-description { font-size: 1rem; }
    .cta-btn { padding: 15px 35px; font-size: 1.25rem; }
}

/* YouTube動画セクション */
.about-video-container { max-width: 900px; margin: 0 auto 60px; }
.video-wrapper { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; border-radius: 20px; box-shadow: 0 10px 40px rgba(0,0,0,.15); background: #000; }
.video-wrapper iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border-radius: 20px; }