@charset "UTF-8";

/* --- 基本設定 (Reset & Typography) --- */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    padding: 0;
    margin: 0;
    color: #333;
    background-color: #f4f7f9;
    padding-top: 60px;
}

a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; padding: 0; margin: 0; }

/* --- ヘッダー & ナビゲーション --- */
header {
    background-color: #00796b;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: 60px;
    display: flex;
    align-items: center;
}

.header-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

/* ロゴデザイン設定 */
.logo a {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo svg {
    height: 36px;
    width: auto;
    fill: #ffffff;
    transition: transform 0.3s ease, filter 0.3s ease;
}

.logo a:hover svg {
    transform: scale(1.05);
    filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.6));
}

/* PC用メニュー */
.main-nav ul {
    display: flex;
    gap: 5px;
}

.main-nav a {
    color: #ffffff;
    font-weight: 500;
    font-size: 0.95em;
    padding: 8px 15px;
    border-radius: 4px;
    display: block;
}

.main-nav a:hover, 
.main-nav a.current {
    background-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

/* ハンバーガーボタン */
.hamburger {
    display: none;
    cursor: pointer;
    font-size: 1.5em;
    color: #ffffff;
    padding: 5px;
}

/* --- スマホ向けスタイル (768px以下) --- */
@media (max-width: 768px) {
    .hamburger { display: block; }

    .main-nav {
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background-color: #ffffff;
        box-shadow: 0 4px 15px rgba(0,0,0,0.1);
        display: none; 
        flex-direction: column;
        border-top: 1px solid #eee;
    }

    .main-nav.active { display: flex; }

    .main-nav ul {
        flex-direction: column;
        width: 100%;
        gap: 0;
    }

    .main-nav li {
        border-bottom: 1px solid #f0f0f0;
    }

    .main-nav a {
        color: #333;
        padding: 15px 20px;
        font-weight: bold;
    }
    
    .main-nav a:hover, 
    .main-nav a.current {
        background-color: #e0f2f1;
        color: #00796b;
    }
}

/* --- 共通コンポーネント --- */
.main-content {
    max-width: 1000px;
    margin: 30px auto;
    padding: 20px;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

h1 {
    color: #00796b;
    text-align: center;
    margin-bottom: 40px;
    font-size: 2em;
    border-bottom: 2px solid #b2dfdb;
    padding-bottom: 15px;
    display: inline-block;
    width: 100%;
}

footer {
    text-align: center;
    padding: 30px 20px;
    margin-top: 60px;
    border-top: 1px solid #e0e0e0;
    font-size: 0.9em;
    color: #777;
    background-color: #f4f7f9;
}

/* --- ホームに戻るボタン (新規デザイン) --- */
.back-to-top {
    display: block;
    width: 220px; /* 幅を広めに確保 */
    margin: 40px auto; /* 上下40px, 左右自動(中央) */
    padding: 15px 20px;
    background-color: #546e7a; /* 落ち着いたブルーグレー */
    color: #ffffff;
    text-align: center;
    text-decoration: none;
    border-radius: 50px; /* 丸みのあるカプセル型 */
    font-weight: bold;
    font-size: 1.1em;
    box-shadow: 0 4px 6px rgba(0,0,0,0.15);
    transition: transform 0.2s, background-color 0.2s, box-shadow 0.2s;
}

.back-to-top:hover {
    background-color: #455a64;
    transform: translateY(-2px); /* 少し浮き上がる */
    box-shadow: 0 6px 12px rgba(0,0,0,0.2);
}

/* --- ヒーローセクション --- */
.hero-section {
    background: linear-gradient(135deg, #004d40 0%, #00796b 100%);
    color: #ffffff;
    text-align: center;
    padding: 80px 20px;
    margin-top: -20px;
    margin-bottom: 40px;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
    position: relative;
    overflow: hidden;
}

.hero-title {
    font-size: 2.5em;
    margin-bottom: 15px;
    letter-spacing: 2px;
    line-height: 1.3;
    text-shadow: 0 2px 5px rgba(0,0,0,0.4);
    border-bottom: none;
    color: #fff !important;
    display: block;
    width: auto;
    padding-bottom: 0;
}

.hero-subtitle {
    font-size: 1.1em;
    opacity: 1;
    margin-bottom: 25px;
    line-height: 1.8;
    font-weight: 500;
    text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

/* アプリストアバッジ (Indexページ用) */
.store-badges {
    margin: 25px 0;
    display: flex;
    justify-content: center;
    align-items: center;
}
.store-badges img {
    height: 80px;
    width: auto;
    transition: transform 0.2s;
}
.store-badges img:hover {
    transform: scale(1.05);
}

/* Web体験版誘導エリア (Indexページ用) */
.web-trial-area {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.3);
}
.web-trial-text {
    font-size: 0.9em;
    color: rgba(255,255,255,0.9);
    margin-bottom: 10px;
}

.hero-btn-group {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.hero-btn {
    padding: 15px 35px;
    border-radius: 50px;
    font-weight: bold;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.05em;
}

.btn-primary {
    background-color: #ffffff;
    color: #004d40;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}
.btn-primary:hover {
    background-color: #f1f1f1;
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(0,0,0,0.3);
}

.btn-secondary {
    background-color: rgba(0, 0, 0, 0.3);
    color: #ffffff;
    border: 1px solid rgba(255,255,255,0.6);
}
.btn-secondary:hover {
    background-color: rgba(0, 0, 0, 0.5);
    transform: translateY(-3px);
}

/* --- セクション見出し --- */
.section-heading {
    text-align: center;
    margin-bottom: 30px;
}
.section-heading h2 {
    display: inline-block;
    font-size: 1.8em;
    color: #333;
    margin-bottom: 10px;
    border-bottom: none;
    width: auto;
    padding-bottom: 0;
}
.section-heading p {
    color: #666;
    font-size: 0.9em;
}

/* --- カードグリッド --- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 50px;
}

.feature-card {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    height: 100%;
}
.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.1);
    border-color: #b2dfdb;
}
.card-img-area {
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5em;
    background-color: #f5f7fa;
    border-bottom: 1px solid #eee;
}
/* アイコンではなく画像がある場合 */
.card-img-area[style*="url"] {
    font-size: 0;
}

.card-body {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}
.card-tag {
    font-size: 0.75em;
    padding: 4px 10px;
    border-radius: 20px;
    color: #fff;
    align-self: flex-start;
    margin-bottom: 15px;
    font-weight: bold;
}
.tag-1st { background-color: #d32f2f; }
.tag-2nd { background-color: #00796b; }
.tag-info { background-color: #1976d2; }

.card-title {
    font-size: 1.25em;
    font-weight: bold;
    margin-bottom: 10px;
    color: #333;
}
.card-text {
    font-size: 0.95em;
    color: #666;
    line-height: 1.7;
    margin-bottom: 20px;
    flex-grow: 1;
}
.card-link-text {
    font-weight: bold;
    color: #00796b;
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* --- メリットセクション --- */
.merit-section {
    background-color: #e0f2f1;
    padding: 50px 20px;
    border-radius: 12px;
    margin-bottom: 50px;
    text-align: center;
}
.merit-grid {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    margin-top: 30px;
}
.merit-item {
    flex: 1;
    min-width: 220px;
    max-width: 300px;
}
.merit-icon {
    font-size: 3em;
    margin-bottom: 15px;
    display: block;
}
.merit-title {
    font-weight: bold;
    color: #004d40;
    font-size: 1.2em;
    margin-bottom: 10px;
}

/* --- プライバシーポリシーページ用 --- */
.policy-container {
    max-width: 800px;
    margin: 40px auto;
    padding: 30px;
    background: white;
    border-radius: 8px;
}
.policy-container h2 {
    font-size: 1.4em;
    border-bottom: 1px solid #ddd;
    margin-top: 30px;
    padding-bottom: 10px;
    color: #333;
    text-align: left;
}
.policy-container h3 {
    font-size: 1.1em;
    margin-top: 25px;
    color: #444;
}
.policy-container ul {
    list-style: disc;
    margin-left: 20px;
    margin-bottom: 20px;
}
.policy-container p, 
.policy-container li {
    font-size: 0.95em;
    color: #555;
    line-height: 1.8;
}

/* --- 日本地図 (School Map) --- */
.map-container {
    position: relative;
    width: 100%;
    max-width: 700px;
    margin: 0 auto 40px;
    padding: 10px;
    background-color: #e3f2fd;
    border-radius: 10px;
}
.japan-map {
    display: grid;
    grid-template-columns: repeat(16, 1fr);
    grid-template-rows: repeat(15, 1fr);
    gap: 4px;
    aspect-ratio: 16/15;
}
.pref {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #fff;
    border: 2px solid #90caf9;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8em;
    font-weight: bold;
    color: #1565c0;
    transition: all 0.2s;
    text-align: center;
    padding: 2px;
    line-height: 1.2;
    position: relative; 
}
.pref:hover {
    background-color: #2196f3;
    color: white;
    transform: translateY(-2px);
    z-index: 10;
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}
.pref.active {
    background-color: #0d47a1;
    color: white;
    border-color: #0d47a1;
}
.pref::after {
    content: attr(data-school-count) "校";
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: #fff;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8em;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}
.pref:hover::after { opacity: 1; }

/* 都道府県グリッド配置 */
.pref[data-code="1"] { grid-column: 14 / 17; grid-row: 1 / 4; background-color: #e1f5fe; }
.pref[data-code="2"] { grid-column: 14 / 16; grid-row: 4 / 5; }
.pref[data-code="5"] { grid-column: 14 / 15; grid-row: 5 / 6; }
.pref[data-code="3"] { grid-column: 15 / 16; grid-row: 5 / 6; }
.pref[data-code="6"] { grid-column: 14 / 15; grid-row: 6 / 7; }
.pref[data-code="4"] { grid-column: 15 / 16; grid-row: 6 / 7; }
.pref[data-code="7"] { grid-column: 14 / 16; grid-row: 7 / 8; }
.pref[data-code="10"] { grid-column: 14 / 15; grid-row: 8 / 9; }
.pref[data-code="9"] { grid-column: 15 / 16; grid-row: 8 / 9; }
.pref[data-code="8"] { grid-column: 16 / 17; grid-row: 8 / 10; }
.pref[data-code="11"] { grid-column: 14 / 15; grid-row: 9 / 10; }
.pref[data-code="13"] { grid-column: 14 / 15; grid-row: 10 / 11; }
.pref[data-code="12"] { grid-column: 15 / 16; grid-row: 10 / 12; }
.pref[data-code="14"] { grid-column: 14 / 15; grid-row: 11 / 12; }
.pref[data-code="19"] { grid-column: 13 / 14; grid-row: 9 / 10; }
.pref[data-code="20"] { grid-column: 13 / 14; grid-row: 8 / 9; }
.pref[data-code="15"] { grid-column: 13 / 14; grid-row: 6 / 8; }
.pref[data-code="16"] { grid-column: 12 / 13; grid-row: 6 / 7; }
.pref[data-code="17"] { grid-column: 11 / 12; grid-row: 5 / 7; }
.pref[data-code="18"] { grid-column: 11 / 12; grid-row: 7 / 8; }
.pref[data-code="21"] { grid-column: 12 / 13; grid-row: 7 / 9; }
.pref[data-code="23"] { grid-column: 12 / 13; grid-row: 9 / 10; }
.pref[data-code="22"] { grid-column: 13 / 14; grid-row: 10 / 11; }
.pref[data-code="25"] { grid-column: 11 / 12; grid-row: 8 / 9; }
.pref[data-code="24"] { grid-column: 11 / 12; grid-row: 9 / 11; }
.pref[data-code="26"] { grid-column: 10 / 11; grid-row: 8 / 9; }
.pref[data-code="29"] { grid-column: 10 / 11; grid-row: 9 / 10; }
.pref[data-code="30"] { grid-column: 10 / 11; grid-row: 10 / 12; }
.pref[data-code="27"] { grid-column: 9 / 10; grid-row: 9 / 10; }
.pref[data-code="28"] { grid-column: 8 / 9; grid-row: 8 / 10; }
.pref[data-code="31"] { grid-column: 7 / 8; grid-row: 8 / 9; }
.pref[data-code="33"] { grid-column: 7 / 8; grid-row: 9 / 10; }
.pref[data-code="32"] { grid-column: 6 / 7; grid-row: 8 / 9; }
.pref[data-code="34"] { grid-column: 6 / 7; grid-row: 9 / 10; }
.pref[data-code="35"] { grid-column: 5 / 6; grid-row: 9 / 10; }
.pref[data-code="37"] { grid-column: 7 / 8; grid-row: 11 / 12; }
.pref[data-code="36"] { grid-column: 8 / 9; grid-row: 11 / 12; }
.pref[data-code="38"] { grid-column: 6 / 7; grid-row: 11 / 12; }
.pref[data-code="39"] { grid-column: 6 / 8; grid-row: 12 / 13; }
.pref[data-code="40"] { grid-column: 4 / 5; grid-row: 9 / 10; }
.pref[data-code="41"] { grid-column: 3 / 4; grid-row: 9 / 10; }
.pref[data-code="42"] { grid-column: 2 / 3; grid-row: 9 / 11; }
.pref[data-code="44"] { grid-column: 4 / 5; grid-row: 10 / 11; }
.pref[data-code="43"] { grid-column: 3 / 4; grid-row: 10 / 12; }
.pref[data-code="45"] { grid-column: 4 / 5; grid-row: 11 / 13; }
.pref[data-code="46"] { grid-column: 3 / 4; grid-row: 12 / 14; }
.pref[data-code="47"] { grid-column: 1 / 3; grid-row: 14 / 16; background-color: #e1f5fe; }

/* スマホ用レスポンシブ */
@media (max-width: 768px) {
    .hero-title { font-size: 1.8em; }
    .hero-btn-group { flex-direction: column; }
    .hero-btn { width: 100%; justify-content: center; box-sizing: border-box; }
    
    .japan-map { display: flex; flex-wrap: wrap; gap: 5px; justify-content: center; aspect-ratio: auto; }
    .pref { width: calc(33.33% - 5px); height: 40px; font-size: 0.9em; }
    .pref[data-code="1"] { width: 100%; } 
    
    .pref[data-code="1"], .pref[data-code="8"], .pref[data-code="15"], 
    .pref[data-code="24"], .pref[data-code="31"], .pref[data-code="36"], 
    .pref[data-code="40"] {
        margin-top: 10px;
    }
    
    .gear-card, .gear-card:nth-child(even) { flex-direction: column; }
    .gear-image-container { width: 100%; min-width: initial; height: 200px; }
    .affiliate-buttons { flex-direction: column; }
}

.gear-image-container img,
.book-cover-container img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    background-color: #fff;
}
.book-cover-container img { padding: 10px; box-sizing: border-box; }