* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: "Hiragino Kaku Gothic ProN", "ヒラギノ角ゴ ProN W3", "メイリオ", Meiryo, sans-serif;
    line-height: 1.8;
    color: #333;
    background-color: #f8f9fa;
}
/* 文字サイズ調整 */
body.font-small { font-size: 14px; }
body.font-medium { font-size: 16px; }
body.font-large { font-size: 18px; }
/* 文字サイズに応じた見出しの調整 */
body.font-small .hero h1 { font-size: 1.8rem; }
body.font-small .hero p { font-size: 1rem; }
body.font-small .section-title { font-size: 1.6rem; }
body.font-small .card h3 { font-size: 1.1rem; }
body.font-small .concern-item h3 { font-size: 1rem; }
body.font-small nav > ul > li > a { font-size: 0.95rem; }
body.font-medium .hero h1 { font-size: 2.2rem; }
body.font-medium .hero p { font-size: 1.2rem; }
body.font-medium .section-title { font-size: 2rem; }
body.font-medium .card h3 { font-size: 1.3rem; }
body.font-medium .concern-item h3 { font-size: 1.2rem; }
body.font-medium nav > ul > li > a { font-size: 1.05rem; }
body.font-large .hero h1 { font-size: 2.6rem; }
body.font-large .hero p { font-size: 1.4rem; }
body.font-large .section-title { font-size: 2.4rem; }
body.font-large .card h3 { font-size: 1.5rem; }
body.font-large .concern-item h3 { font-size: 1.4rem; }
body.font-large nav > ul > li > a { font-size: 1.15rem; }
/* ヘッダー */
header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-top {
    background-color: #f8f9fa;
    border-bottom: 1px solid #e0e0e0;
}
.header-top-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.5rem 2rem;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.5rem;
}
.font-size-controls {
    display: flex;
    gap: 0.3rem;
    align-items: center;
}
.font-size-label {
    font-size: 0.9rem;
    color: #666;
    margin-right: 0.3rem;
}
.font-btn {
    background-color: #fff;
    border: 1px solid #d0d0d0;
    padding: 0.3rem 0.8rem;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s;
    border-radius: 4px;
}
.font-btn:hover {
    background-color: #4a90a4;
    color: white;
    border-color: #4a90a4;
}
.font-btn.active {
    background-color: #2c7da0;
    color: white;
    border-color: #2c7da0;
}
.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2c7da0;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 1001;
    position: relative;
}
.logo-icon { font-size: 1.8rem; }
/* ハンバーガーメニューボタン */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    position: relative;
}
.hamburger span {
    display: block;
    width: 28px;
    height: 3px;
    background-color: #2c7da0;
    transition: all 0.3s ease;
    border-radius: 3px;
    position: absolute;
}
.hamburger span:nth-child(1) { top: 12px; }
.hamburger span:nth-child(2) { top: 20px; }
.hamburger span:nth-child(3) { top: 28px; }
.hamburger.active span:nth-child(1) {
    top: 20px;
    transform: rotate(45deg);
}
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) {
    top: 20px;
    transform: rotate(-45deg);
}
/* PC用ナビゲーション */
.nav-pc { display: block; }
.nav-pc ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}
.nav-pc li { position: relative; }
.nav-pc > ul > li > a {
    text-decoration: none;
    color: #333;
    font-size: 1.05rem;
    font-weight: 500;
    transition: color 0.3s;
    padding: 0.5rem 0;
    display: block;
}
.nav-pc > ul > li > a:hover { color: #2c7da0; }
/* ドロップダウンメニュー（PC） */
.dropdown { position: relative; }
.dropdown > a { cursor: pointer; }
.dropdown > a::after {
    content: ' ▼';
    font-size: 0.7rem;
    margin-left: 0.3rem;
}
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    border-radius: 8px;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s;
    padding: 0.5rem 0;
    z-index: 1000;
}
.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.dropdown-menu-title {
    font-size: 0.85rem;
    color: #666;
    padding: 0.5rem 1.5rem 0.3rem;
    font-weight: bold;
    border-bottom: 1px solid #e0e0e0;
    margin-bottom: 0.3rem;
}
.dropdown-menu a {
    display: block;
    padding: 0.7rem 1.5rem;
    color: #333;
    text-decoration: none;
    transition: background-color 0.3s;
    font-size: 1rem;
}
.dropdown-menu a:hover {
    background-color: #f0f8ff;
    color: #2c7da0;
}
/* スマホ用ナビゲーション */
.nav-mobile {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.95);
    z-index: 1000;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}
.nav-mobile.active {
    opacity: 1;
    visibility: visible;
}
.nav-mobile ul {
    list-style: none;
    padding: 6rem 2rem 3rem;
}
.nav-mobile > ul > li { border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.nav-mobile > ul > li > a {
    display: block;
    color: white;
    text-decoration: none;
    font-size: 1.2rem;
    padding: 1.2rem 0;
    font-weight: 500;
    transition: color 0.3s;
}
.nav-mobile > ul > li > a:hover { color: #4a90a4; }
/* スマホ用ドロップダウン */
.nav-mobile .dropdown > a::after {
    content: ' ▼';
    font-size: 0.8rem;
    float: right;
    transition: transform 0.3s;
}
.nav-mobile .dropdown.active > a::after { transform: rotate(180deg); }
.nav-mobile .dropdown-menu {
    position: static;
    background-color: rgba(255, 255, 255, 0.05);
    box-shadow: none;
    border-radius: 0;
    opacity: 1;
    visibility: visible;
    transform: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0;
}
.nav-mobile .dropdown.active .dropdown-menu {
    max-height: 500px;
    padding: 0.5rem 0;
}
.nav-mobile .dropdown-menu-title {
    color: #aaa;
    border-bottom-color: rgba(255, 255, 255, 0.1);
}
.nav-mobile .dropdown-menu a {
    color: #ddd;
    padding: 0.8rem 1.5rem;
}
.nav-mobile .dropdown-menu a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
}
/* ページトップボタン */
.page-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #2c7da0;
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    z-index: 99;
    display: flex;
    align-items: center;
    justify-content: center;
}
.page-top.visible {
    opacity: 1;
    visibility: visible;
}
.page-top:hover {
    background-color: #4a90a4;
    transform: translateY(-5px);
}
/* メインビジュアル */
.hero {
    background: linear-gradient(135deg, #4a90a4 0%, #2c7da0 100%);
    color: white;
    padding: 4rem 2rem;
    text-align: center;
}
.hero-content {
    max-width: 900px;
    margin: 0 auto;
}
.hero h1 {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}
.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}
.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}
.btn-primary, .btn-secondary {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: bold;
    transition: all 0.3s;
    display: inline-block;
}
.btn-primary {
    background-color: #fff;
    color: #2c7da0;
}
.btn-primary:hover {
    background-color: #f0f0f0;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.btn-secondary {
    background-color: transparent;
    color: #fff;
    border: 2px solid #fff;
}
.btn-secondary:hover { background-color: rgba(255,255,255,0.1); }
/* メインコンテンツ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}
.section { padding: 4rem 0; }
.section-title {
    font-size: 2rem;
    color: #2c7da0;
    margin-bottom: 1rem;
    text-align: center;
    position: relative;
    padding-bottom: 1rem;
}
.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: #4a90a4;
    margin: 1rem auto 0;
}
.section-subtitle {
    text-align: center;
    color: #666;
    font-size: 1.05rem;
    margin-bottom: 3rem;
}
/* カード */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}
.card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transition: all 0.3s;
    text-decoration: none;
    color: #333;
    display: block;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}
.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}
.card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #2c7da0;
}
.card p {
    color: #666;
    line-height: 1.7;
}
/* 利用シーン別ガイド */
.scenes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}
.scene-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transition: all 0.3s;
    text-decoration: none;
    color: #333;
    display: flex;
    flex-direction: column;
    border: 2px solid transparent;
}
.scene-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
    border-color: #4a90a4;
}
.scene-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}
.scene-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #2c7da0;
}
.scene-card p {
    color: #666;
    line-height: 1.7;
    flex-grow: 1;
    margin-bottom: 1rem;
}
.scene-link-text {
    color: #2c7da0;
    font-weight: 600;
    font-size: 0.95rem;
}
.scene-card:hover .scene-link-text { color: #4a90a4; }
/* 料金情報セクション */
.price-section { background: linear-gradient(135deg, #f0f8ff 0%, #e6f3ff 100%); }
.highlight-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}
.highlight-card {
    background: white;
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.highlight-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}
.highlight-card h3 {
    font-size: 1.5rem;
    color: #2c7da0;
    margin-bottom: 1.5rem;
}
.price-breakdown { margin: 1.5rem 0; }
.price-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background-color: #f8f9fa;
    border-radius: 8px;
    margin-bottom: 0.8rem;
}
.price-label {
    font-weight: 600;
    color: #333;
}
.price-range {
    color: #2c7da0;
    font-weight: bold;
}
.highlight-note {
    font-size: 0.9rem;
    color: #666;
    margin: 1rem 0;
}
.tips-list {
    list-style: none;
    margin: 1.5rem 0;
}
.tips-list li {
    padding: 0.8rem 0;
    color: #333;
    font-size: 1.05rem;
    border-bottom: 1px solid #e0e0e0;
}
.tips-list li:last-child { border-bottom: none; }
.highlight-link {
    display: inline-block;
    color: #2c7da0;
    font-weight: 600;
    text-decoration: none;
    margin-top: 1rem;
    transition: color 0.3s;
}
.highlight-link:hover { color: #4a90a4; }
/* 選び方セクション */
.choose-section { background-color: white; }
.choose-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}
.choose-point {
    position: relative;
    padding: 2rem;
    background: linear-gradient(to bottom right, #f8f9fa 0%, #ffffff 100%);
    border-radius: 12px;
    border-left: 4px solid #4a90a4;
}
.choose-number {
    position: absolute;
    top: -15px;
    left: 20px;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #4a90a4 0%, #2c7da0 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: bold;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.choose-point h3 {
    font-size: 1.2rem;
    color: #2c7da0;
    margin-bottom: 1rem;
    margin-top: 1rem;
}
.choose-point p {
    color: #666;
    line-height: 1.7;
}
.choose-cta {
    text-align: center;
    margin-top: 3rem;
    padding: 2rem;
    background: linear-gradient(135deg, #f0f8ff 0%, #e6f3ff 100%);
    border-radius: 12px;
}
.choose-cta-text {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 1.5rem;
}
/* 地域検索 */
.city-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}
.city-link {
    background: white;
    padding: 1.2rem;
    border-radius: 8px;
    text-align: center;
    text-decoration: none;
    color: #333;
    font-size: 1.1rem;
    font-weight: 500;
    border: 2px solid #e0e0e0;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.city-link:hover {
    border-color: #4a90a4;
    background-color: #f0f8ff;
    color: #2c7da0;
}
.city-link::before {
    content: '📍';
    font-size: 1.2rem;
}
/* CTA */
.cta-section {
    background: linear-gradient(135deg, #4a90a4 0%, #2c7da0 100%);
    color: white;
    padding: 4rem 2rem;
    text-align: center;
    margin-top: 4rem;
}
.cta-section h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}
.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}
/* フッター */
footer {
    background-color: #2c3e50;
    color: #ecf0f1;
    padding: 3rem 2rem 1.5rem;
}
.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}
.footer-section h3 {
    color: #4a90a4;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}
.footer-section ul { list-style: none; }
.footer-section a {
    color: #ecf0f1;
    text-decoration: none;
    display: block;
    padding: 0.3rem 0;
    transition: color 0.3s;
}
.footer-section a:hover { color: #4a90a4; }
.footer-info {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 0;
    border-top: 1px solid #34495e;
    text-align: center;
}
.update-info {
    color: #95a5a6;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}
.disclaimer {
    color: #7f8c8d;
    font-size: 0.85rem;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}
.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 1.5rem;
    text-align: center;
    color: #95a5a6;
}
/* レスポンシブ */
@media (max-width: 768px) {
    .header-top-container {
        padding: 0.5rem 1rem;
    }

    .font-size-label {
        display: none;
    }

    .header-container {
        padding: 1rem;
    }

    .hamburger {
        display: flex;
    }

    .nav-pc {
        display: none;
    }

    .nav-mobile {
        display: block;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .hero p {
        font-size: 1.05rem;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .city-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

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

    .page-top {
        width: 50px;
    height: 50px;
    bottom: 20px;
    right: 20px;
    font-size: 1.2rem;
    }

    .scenes-grid {
        grid-template-columns: 1fr;
    gap: 1.5rem;
    }

    .highlight-cards {
        grid-template-columns: 1fr;
    gap: 1.5rem;
    }

    .highlight-card {
        padding: 2rem;
    }

    .choose-grid {
        grid-template-columns: 1fr;
    gap: 1.5rem;
    }

    .choose-cta {
        padding: 1.5rem;
    }

    .choose-cta-text {
        font-size: 1rem;
    }

    /* スマホでフッターを2列表示 */
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem 1rem;
    }

    .footer-section h3 {
        font-size: 1rem;
    }

    .footer-section a {
        font-size: 0.9rem;
    padding: 0.25rem 0;
    }

    .footer-info {
        padding: 1.5rem 1rem;
    }

    .disclaimer {
        font-size: 0.8rem;
    }

    footer {
        padding: 2rem 1rem 1rem;
    }

    .stat-item {
        padding: 0.6rem 1rem;
    font-size: 0.9rem;
    }

    .stat-icon {
        font-size: 1.2rem;
    }

    .stat-text {
        font-size: 0.9rem;
    };
}
/* さらに小さい画面（360px以下）では1列に */
@media (max-width: 360px) {
    .footer-content {
        grid-template-columns: 1fr;
    };
}
/* アクセシビリティ向上 */
a:focus, button:focus {
    outline: 3px solid #4a90a4;
    outline-offset: 2px;
}