:root {
    /* モダンブルー・パレット */
    --primary-blue: #007AFF;
    --primary-blue-dark: #0056b3;
    --deep-blue: #0A2540;
    --bg-color: #F0F2F5;
    --card-bg: #FFFFFF;
    --text-primary: #1D1D1F;
    --text-secondary: #6e6e73;
    --separator: rgba(0,0,0,0.08);
    
    --header-height: 60px;
    --section-spacing: 140px;
    --card-radius: 24px;
}

/* ダークモード対応 */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #000000;
        --card-bg: #1C1C1E; /* ベース色 */
        --text-primary: #F5F5F7;
        --text-secondary: #86868B;
        --deep-blue: #FFFFFF;
        --separator: rgba(255,255,255,0.15);
        --primary-blue-dark: #004494;
    }
    
    /* ダークモード用カードスタイル上書き */
    .card { 
        /* 1. 境界線を明るくして背景から切り出す */
        border: 1px solid rgba(255, 255, 255, 0.15) !important;
        
        /* 2. 表面にわずかなグラデーションをかけ、平面的な印象を消す */
        background: linear-gradient(145deg, #252528, #1c1c1e) !important;
        
        /* 3. ハイライト(上)とシャドウ(下)の組み合わせで厚みを出す */
        box-shadow: 
            inset 0 1px 0 0 rgba(255, 255, 255, 0.1), /* エッジハイライト */
            0 20px 40px -10px rgba(0, 0, 0, 0.8) !important; /* 濃いドロップシャドウ */
    }

    /* カードホバー時の強化 */
    .card:hover {
        border-color: rgba(255, 255, 255, 0.3) !important;
        box-shadow: 
            inset 0 1px 0 0 rgba(255, 255, 255, 0.2),
            0 30px 60px -12px rgba(0, 0, 0, 0.9) !important;
    }

    .global-header { 
        background: rgba(28, 28, 30, 0.85) !important; 
        border-color: rgba(255,255,255,0.15) !important;
        box-shadow: 0 4px 20px rgba(0,0,0,0.5) !important;
    }
    .nav-link { color: var(--text-primary) !important; }
    .nav-link:hover { background-color: rgba(255,255,255,0.1) !important; }
    .nav-btn { 
        background-color: var(--primary-blue) !important; 
        color: white !important; 
        box-shadow: 0 4px 0 var(--primary-blue-dark) !important;
    }
    .hero-title { color: var(--text-primary) !important; }
    #hero { background: radial-gradient(circle at 50% 0%, #1A2B45 0%, var(--bg-color) 70%) !important; }
    
    .form-select, .form-input { 
        background-color: #0d0d0e !important; 
        color: var(--text-primary) !important;
        border-color: #3A3A3C !important;
        box-shadow: inset 0 2px 4px rgba(0,0,0,0.5), 0 1px 0 rgba(255,255,255,0.1) !important;
    }
    
    .checkbox-card {
        background: #2C2C2E !important;
        border-color: #3A3A3C !important;
        box-shadow: 0 4px 0 rgba(0,0,0,0.5) !important;
    }
    .checkbox-card:hover {
        background: #3A3A3C !important;
    }
    .checkbox-card.checked {
        background: var(--primary-blue) !important;
        box-shadow: 0 4px 0 var(--primary-blue-dark) !important;
    }
    
    /* 下層ページ用のダークモード背景調整 */
    .doc-body { background-color: #000000 !important; }
    .tokusho-table th { background-color: #2C2C2E !important; }
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    letter-spacing: -0.01em;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 32px;
}

h1, h2, h3 {
    font-weight: 900;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

h2 {
    font-size: 48px;
    text-align: center;
    margin-bottom: 80px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--deep-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}
@media (prefers-color-scheme: dark) {
    h2 {
        background: linear-gradient(135deg, #FFFFFF 0%, #007AFF 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }
}

p {
    color: var(--text-primary);
    opacity: 0.8;
    font-size: 17px;
}

/* ヘッダー */
.global-header {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    width: auto;
    max-width: 90%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    z-index: 1000;
    border-radius: 999px;
    box-shadow: 
        0 4px 6px -1px rgba(0, 0, 0, 0.1),
        0 2px 4px -1px rgba(0, 0, 0, 0.06),
        0 0 0 1px rgba(0,0,0,0.05);
    padding: 0 8px;
    transition: background-color 0.3s;
}

.header-container {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 24px;
    gap: 40px;
}

.header-logo {
    font-weight: 900;
    font-size: 20px;
    color: var(--primary-blue);
    text-decoration: none;
    letter-spacing: -0.02em;
    text-shadow: 0 1px 1px rgba(0,0,0,0.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 14px;
    padding: 10px 18px;
    border-radius: 999px;
    transition: all 0.2s;
}

.nav-link:hover {
    background-color: rgba(0,0,0,0.05);
}

.nav-btn {
    background-color: var(--text-primary);
    color: white !important;
    box-shadow: 0 3px 0 rgba(0,0,0,0.2);
    transition: all 0.1s;
    position: relative;
    top: 0;
}
.nav-btn:hover {
    background-color: var(--deep-blue);
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 4px 0 rgba(0,0,0,0.2);
}
.nav-btn:active {
    top: 3px;
    box-shadow: none;
    transform: none;
}

/* ハンバーガー */
.hamburger { display: none; }

/* セクション */
section {
    padding: var(--section-spacing) 0;
    opacity: 0;
    transform: translateY(40px) scale(0.98);
    transition: all 1s cubic-bezier(0.16, 1, 0.3, 1);
}
section.active {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* ヒーロー */
#hero {
    padding-top: 180px;
    padding-bottom: 100px;
    text-align: center;
    background: radial-gradient(circle at 50% 0%, #E0E8F5 0%, var(--bg-color) 70%);
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 122, 255, 0.1);
    color: var(--primary-blue);
    font-size: 13px;
    font-weight: 700;
    border-radius: 999px;
    margin-bottom: 32px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: 0 2px 4px rgba(0, 122, 255, 0.1);
}

.hero-title {
    font-size: 72px;
    line-height: 1.05;
    margin-bottom: 32px;
    color: var(--deep-blue);
    letter-spacing: -0.04em;
    text-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.hero-desc {
    font-size: 22px;
    max-width: 680px;
    margin: 0 auto 56px;
    line-height: 1.5;
}

/* ボタン */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 36px;
    font-size: 17px;
    font-weight: 700;
    border-radius: 18px;
    text-decoration: none;
    transition: all 0.1s ease-out;
    border: none;
    cursor: pointer;
    position: relative;
    top: 0;
}

.btn-primary {
    background: var(--primary-blue);
    color: white;
    box-shadow: 
        0 6px 0 var(--primary-blue-dark), 
        0 12px 24px rgba(0, 122, 255, 0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 8px 0 var(--primary-blue-dark), 
        0 16px 32px rgba(0, 122, 255, 0.4);
}
.btn-primary:active {
    top: 6px;
    transform: none;
    box-shadow: 
        0 0 0 var(--primary-blue-dark), 
        inset 0 3px 5px rgba(0,0,0,0.2);
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--text-primary);
    margin-left: 20px;
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: 
        0 4px 0 #d1d5db, 
        0 8px 16px rgba(0,0,0,0.05);
}
.btn-secondary:hover {
    background: #f9fafb;
    transform: translateY(-2px);
    box-shadow: 
        0 6px 0 #d1d5db, 
        0 12px 24px rgba(0,0,0,0.08);
}
.btn-secondary:active {
    top: 4px;
    box-shadow: 
        0 0 0 #d1d5db,
        inset 0 2px 4px rgba(0,0,0,0.05);
    transform: none;
}

/* ★3Dカードデザイン（共通）★ */
.card {
    background: var(--card-bg);
    border-radius: var(--card-radius);
    padding: 48px;
    position: relative;
    transition: all 0.3s ease;
    
    /* ライトモード用の影構成 */
    border: 1px solid rgba(255,255,255,0.8);
    box-shadow: 
        0 1px 2px rgba(0,0,0,0.05), 
        0 8px 16px rgba(0,0,0,0.05),
        0 20px 40px -8px rgba(0,0,0,0.08);
}
/* ダークモードはメディアクエリ内で上書き */

.card:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 4px 8px rgba(0,0,0,0.05), 
        0 12px 24px rgba(0,0,0,0.05),
        0 30px 60px -12px rgba(0,0,0,0.12);
}

/* サービスグリッド */
.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.service-card {
    padding: 40px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
.service-icon-box {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-blue), #5AC8FA);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 32px;
    color: white;
    font-size: 28px;
    box-shadow: 
        0 8px 16px -4px rgba(0, 122, 255, 0.5),
        inset 0 2px 0 rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.1);
}
.service-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
    color: var(--deep-blue);
}
@media (prefers-color-scheme: dark) {
    .service-card h3 { color: var(--text-primary); }
}

/* フロー */
.flow-grid {
    display: grid;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}
.flow-card {
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 32px 40px;
}
.flow-num {
    font-size: 48px;
    font-weight: 900;
    color: var(--bg-color);
    text-shadow: 
        -1px -1px 0 var(--primary-blue),  
        1px -1px 0 var(--primary-blue),
        -1px 1px 0 var(--primary-blue),
        1px 1px 0 var(--primary-blue),
        2px 2px 4px rgba(0,0,0,0.1);
    line-height: 1;
    flex-shrink: 0;
}

/* 見積もりフォーム */
.estimate-container {
    max-width: 700px;
    margin: 0 auto;
}
.form-label {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-primary);
    opacity: 0.8;
    margin-bottom: 12px;
    letter-spacing: 0.05em;
    display: block;
}

.form-select, .form-input {
    width: 100%;
    padding: 20px;
    font-size: 18px;
    font-weight: 500;
    border-radius: 16px;
    background: #f3f4f6;
    transition: all 0.2s;
    appearance: none;
    color: var(--deep-blue);
    border: 1px solid transparent;
    box-shadow: 
        inset 0 2px 4px rgba(0,0,0,0.06),
        0 1px 0 rgba(255,255,255,1);
}
.form-select:focus, .form-input:focus {
    outline: none;
    background: #FFFFFF;
    border-color: var(--primary-blue);
    box-shadow: 
        0 0 0 4px rgba(0, 122, 255, 0.15),
        inset 0 1px 2px rgba(0,0,0,0.05);
}

.checkbox-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    background: #FFFFFF;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.1s ease-out;
    font-weight: 600;
    position: relative;
    top: 0;
    box-shadow: 
        0 4px 0 #e5e7eb,
        0 4px 8px rgba(0,0,0,0.05);
    border: 1px solid #e5e7eb;
}
.checkbox-card:hover { 
    transform: translateY(-2px);
    box-shadow: 
        0 6px 0 #e5e7eb,
        0 8px 12px rgba(0,0,0,0.05);
}
.checkbox-card:active {
    top: 4px;
    box-shadow: 
        0 0 0 #e5e7eb,
        inset 0 2px 4px rgba(0,0,0,0.05);
    transform: none;
}
.checkbox-card.checked {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue-dark);
    box-shadow: 
        0 4px 0 var(--primary-blue-dark),
        0 8px 16px rgba(0, 122, 255, 0.3);
}
.checkbox-card.checked:hover {
    box-shadow: 
        0 6px 0 var(--primary-blue-dark),
        0 12px 24px rgba(0, 122, 255, 0.4);
}
.checkbox-card.checked:active {
    box-shadow: 
        0 0 0 var(--primary-blue-dark),
        inset 0 3px 5px rgba(0,0,0,0.2);
}

.price-display {
    font-size: 80px;
    font-weight: 900;
    text-align: center;
    color: var(--primary-blue);
    letter-spacing: -0.04em;
    line-height: 1;
    margin: 40px 0;
    text-shadow: 0 4px 8px rgba(0, 122, 255, 0.2);
}

/* フッター */
.global-footer {
    padding: 80px 0;
    text-align: center;
    color: var(--text-primary);
    opacity: 0.8;
    font-size: 14px;
    border-top: 1px solid var(--separator);
    margin-top: var(--section-spacing);
}
.footer-logo {
    height: 40px; /* ロゴの高さを指定 */
    width: auto;
    margin: 0 auto 32px auto; /* 中央配置と下の余白 */
    display: block;
}
.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 32px;
}
.footer-links a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s;
}
.footer-links a:hover {
    color: var(--primary-blue);
    text-decoration: underline;
}
.footer-copyright {
    font-size: 13px;
}


/* レスポンシブ */
@media (max-width: 1024px) {
    .service-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .global-header {
        top: 0;
        left: 0;
        transform: none;
        width: 100%;
        max-width: none;
        border-radius: 0;
        border: none;
        border-bottom: 1px solid var(--separator);
        padding: 0;
        box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    }
    .header-container {
        justify-content: space-between;
        padding: 0 20px;
    }
    .nav-menu { 
        display: none;
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background: var(--card-bg);
        flex-direction: column;
        padding: 40px 20px;
        gap: 16px;
    }
    .nav-menu.active { display: flex; }
    .nav-link { 
        width: 100%; 
        text-align: center; 
        padding: 16px; 
        font-size: 18px;
    }

    .hamburger { 
        display: flex; 
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 40px;
        height: 40px;
        background: none; 
        border: none; 
        cursor: pointer; 
        gap: 6px;
    }
    .hamburger span { 
        display: block; 
        width: 24px; 
        height: 2px; 
        background: var(--text-primary); 
        border-radius: 2px;
        transition: all 0.3s;
    }
    .hamburger.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
    
    .hero-title { font-size: 42px; }
    .hero-desc { font-size: 18px; }
    .btn { width: 100%; display: flex; margin: 0 0 20px 0; }
    .btn-secondary { margin-left: 0; }
    
    .service-grid { grid-template-columns: 1fr; }
    .flow-card { flex-direction: column; align-items: flex-start; gap: 16px; padding: 32px; }
    .price-display { font-size: 56px; }
    
    .container { padding: 0 24px; }
    .card { padding: 32px 24px; }
}

/* =========================================
   文書ページ用レイアウト (Docs Layout)
   ========================================= */
.doc-body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-color: #F9FAFB; /* Light gray base */
}

.doc-header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--separator);
    padding: 20px 0;
    margin-bottom: 40px;
}
.doc-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.doc-brand {
    font-size: 20px;
    font-weight: 900;
    color: var(--primary-blue);
    line-height: 1.2;
}
.doc-sub-title {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: normal;
    margin-left: 8px;
}
.doc-back-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-blue);
    text-decoration: none;
}
.doc-back-link:hover { text-decoration: underline; }

.doc-paper {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 48px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--separator);
}
@media (max-width: 768px) {
    .doc-paper { padding: 24px; }
    .doc-header .container { flex-direction: column; gap: 16px; align-items: flex-start; }
    .doc-back-link { align-self: flex-end; }
}

/* =========================================
   文書コンテンツスタイル (Privacy, Tokushoho)
   ========================================= */
.policy-content h2 {
    font-size: 1.5rem; /* 24px */
    font-weight: 600;
    margin-top: 2.5rem; /* 40px */
    margin-bottom: 1rem; /* 16px */
    border-bottom: 1px solid var(--separator);
    padding-bottom: 0.5rem; /* 8px */
    color: var(--deep-blue);
}
.policy-content h3 {
    font-size: 1.25rem; /* 20px */
    font-weight: 600;
    margin-top: 2rem; /* 32px */
    margin-bottom: 0.75rem; /* 12px */
}
.policy-content p {
    line-height: 1.75;
    margin-bottom: 1.25rem; /* 20px */
}
.policy-content ul {
    list-style-type: disc;
    padding-left: 1.75rem; /* 28px */
    margin-bottom: 1.25rem; /* 20px */
}
.policy-content li {
    margin-bottom: 0.5rem; /* 8px */
}

/* =========================================
   特定商取引法に基づく表記ページ用スタイル
   ========================================= */
.tokusho-table {
    width: 100%;
    border-collapse: collapse;
}
.tokusho-table th {
    width: 30%;
    padding: 20px 24px;
    text-align: left;
    font-weight: 600;
    background-color: #f9fafb; /* gray-50 */
    border-bottom: 1px solid var(--separator);
    color: var(--text-primary);
}
.tokusho-table td {
    padding: 20px 24px;
    border-bottom: 1px solid var(--separator);
    color: var(--text-primary);
}
@media (max-width: 640px) {
    .tokusho-table th, .tokusho-table td {
        display: block;
        width: 100%;
    }
    .tokusho-table th {
        background: transparent;
        padding-bottom: 8px;
        color: var(--text-secondary);
        font-size: 13px;
        text-transform: uppercase;
    }
    .tokusho-table td {
        padding-top: 0;
        border-bottom: 1px solid var(--separator);
    }
}