/* ========================================
   リセット & ベース設定
   ======================================== */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
    line-height: 1.85;
    color: #333333;
    background-color: #FFFDF8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   カラーパレット（CSS変数）
   ======================================== */

:root {
    --color-bg-main: #FFFDF8;
    --color-bg-white: #FFFDF8;
    --color-bg-light: #F5F6F7;
    --color-text-primary: #333333;
    --color-text-secondary: #666666;
    --color-heading: #5E7C8A;
    --color-link: #3E5F6E;
    --color-border: #E0E0E0;
    --color-cta-primary: #2F3A44;
    --color-cta-text: #FFFFFF;
    --color-cta-hover: #1F2930;
    --spacing-section: 80px;
    --spacing-section-mobile: 48px;
    --container-max-width: 900px;
}

/* ========================================
   コンテナ & レイアウト
   ======================================== */

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   ヘッダー
   ======================================== */

.site-header {
    position: sticky;
    top: 0;
    background-color: rgba(255, 253, 248, 0.96);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    padding: 16px 0;
}

.header-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-primary);
}

.header-cta {
    padding: 8px 20px;
    font-size: 14px;
    background-color: transparent;
    border: 1px solid var(--color-cta-primary);
    color: var(--color-cta-primary);
    border-radius: 4px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.header-cta:hover {
    background-color: var(--color-cta-primary);
    color: var(--color-cta-text);
}

/* ========================================
   メインコンテンツ
   ======================================== */

.main-content {
    padding-top: 0;
}

/* ========================================
   ファーストビュー
   ======================================== */

.hero-section {
    padding: var(--spacing-section) 0;
    background-color: var(--color-bg-white);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: center;
    margin-bottom: 48px;
}

.hero-title {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.6;
    color: var(--color-text-primary);
    margin-bottom: 32px;
}

.hero-message {
    margin-bottom: 32px;
}

.hero-message p {
    font-size: 18px;
    line-height: 1.85;
    color: var(--color-text-secondary);
}

.hero-concerns {
    padding: 24px;
    background-color: var(--color-bg-light);
    border-left: 4px solid var(--color-heading);
    border-radius: 4px;
}

.hero-concerns p {
    font-size: 17px;
    line-height: 2;
    color: var(--color-text-primary);
    margin-bottom: 12px;
}

.hero-concerns p:last-child {
    margin-bottom: 0;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
}

.image-placeholder {
    width: 100%;
    max-width: 400px;
    height: 300px;
    background: linear-gradient(135deg, #e8ebed 0%, #d8dde0 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-cta-wrapper {
    text-align: center;
    margin-top: 48px;
}

/* ========================================
   セクション共通
   ======================================== */

.content-section {
    padding: var(--spacing-section) 0;
    background-color: var(--color-bg-white);
}

.content-section.bg-light {
    background-color: var(--color-bg-light);
}

.section-intro {
    text-align: center;
    margin-bottom: 48px;
}

.section-heading {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.65;
    color: var(--color-heading);
    margin-bottom: 40px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--color-border);
}

.text-content {
    font-size: 17px;
    line-height: 1.9;
    color: var(--color-text-primary);
}

.text-content p {
    margin-bottom: 24px;
}

.text-content p:last-child {
    margin-bottom: 0;
}

/* ========================================
   強調表現
   ======================================== */

.emphasis-text {
    font-size: 20px;
    font-weight: 500;
    color: var(--color-text-primary);
    text-align: center;
}

.emphasis-block {
    font-size: 19px;
    font-weight: 500;
    line-height: 1.9;
    color: var(--color-text-primary);
    padding: 24px;
    background-color: var(--color-bg-light);
    border-radius: 4px;
    margin: 32px 0;
}

.emphasis-large {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-heading);
    margin-top: 16px;
}

/* ========================================
   キーメッセージ
   ======================================== */

.key-message {
    padding: 32px 28px;
    background-color: var(--color-bg-light);
    border: 2px solid var(--color-heading);
    border-radius: 8px;
    margin: 40px 0;
    text-align: center;
}

.key-message p {
    font-size: 19px;
    font-weight: 500;
    line-height: 1.9;
    color: var(--color-text-primary);
    margin-bottom: 16px;
}

.key-message p:last-child {
    margin-bottom: 0;
}

.key-message.highlight {
    background-color: var(--color-bg-light);
    border-color: var(--color-link);
}

/* ========================================
   リスト
   ======================================== */

.feature-list {
    list-style: none;
    margin: 24px 0;
    padding: 0;
}

.feature-list li {
    padding-left: 28px;
    position: relative;
    margin-bottom: 16px;
    line-height: 1.85;
}

.feature-list li:last-child {
    margin-bottom: 0;
}

.feature-list li::before {
    content: '・';
    position: absolute;
    left: 0;
    color: var(--color-heading);
    font-weight: 700;
    font-size: 20px;
}

.feature-list.centered {
    text-align: left;
}

/* ========================================
   比較カード
   ======================================== */

.comparison-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin: 40px 0;
}

.comparison-card {
    padding: 28px;
    background-color: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: 8px;
}

.comparison-card.highlight-card {
    background-color: var(--color-bg-light);
    border: 2px solid var(--color-heading);
}

.card-heading {
    font-size: 19px;
    font-weight: 700;
    color: var(--color-heading);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

/* ========================================
   最終メッセージ
   ======================================== */

.final-message {
    text-align: center;
    margin-top: 40px;
    margin-bottom: 24px;
    padding: 32px;
    background-color: var(--color-bg-light);
    border-radius: 8px;
}

.final-message p {
    font-size: 18px;
    line-height: 1.9;
    margin-bottom: 0;
}

.cta-intro {
    font-size: 19px;
    font-weight: 700;
    color: var(--color-heading);
}

/* ========================================
   CTAボタン
   ======================================== */

.cta-button {
    display: inline-block;
    padding: 16px 40px;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    color: var(--color-cta-text);
    background-color: var(--color-cta-primary);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 50px;
    line-height: 1.4;
}

.cta-button:hover {
    background-color: var(--color-cta-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(47, 58, 68, 0.2);
}

.cta-button:focus {
    outline: 2px solid var(--color-heading);
    outline-offset: 2px;
}

.cta-button.primary-cta {
    font-size: 17px;
    padding: 18px 48px;
}

.cta-button.primary-cta.large {
    font-size: 18px;
    padding: 20px 56px;
}

/* ========================================
   CTAセクション
   ======================================== */

.cta-section {
    padding: 56px 0;
    text-align: center;
    background-color: var(--color-bg-white);
}

.cta-section.final-cta {
    padding-top: 0;
    padding-bottom: var(--spacing-section);
    background-color: var(--color-bg-light);
}

.cta-notes {
    margin-top: 24px;
    text-align: center;
}

.cta-notes p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.cta-notes p:last-child {
    margin-bottom: 0;
}

/* ========================================
   スマホ固定CTA
   ======================================== */

.mobile-fixed-cta {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 253, 248, 0.98);
    backdrop-filter: blur(8px);
    padding: 12px 16px;
    box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.08);
    z-index: 999;
    transition: transform 0.3s ease;
}

.mobile-fixed-cta.hidden {
    transform: translateY(100%);
}

.mobile-cta-button {
    width: 100%;
    display: block;
    padding: 14px 24px;
    font-size: 15px;
}

/* ========================================
   フッター
   ======================================== */

.site-footer {
    padding: 48px 0;
    background-color: var(--color-bg-white);
    border-top: 1px solid var(--color-border);
}

.footer-text {
    text-align: center;
    font-size: 14px;
    color: var(--color-text-secondary);
}

/* ========================================
   レスポンシブ（タブレット）
   ======================================== */

@media (min-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
        gap: 56px;
    }
    
    .comparison-cards {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

/* ========================================
   レスポンシブ（スマホ）
   ======================================== */

@media (max-width: 767px) {
    :root {
        --spacing-section: var(--spacing-section-mobile);
    }
    
    html {
        font-size: 15px;
    }
    
    .container {
        padding: 0 20px;
    }
    
    .header-container {
        padding: 0 20px;
    }
    
    .logo-text {
        font-size: 13px;
    }
    
    .header-cta {
        font-size: 13px;
        padding: 7px 16px;
    }
    
    .hero-title {
        font-size: 26px;
        line-height: 1.65;
        margin-bottom: 24px;
    }
    
    .hero-message p {
        font-size: 16px;
    }
    
    .hero-concerns {
        padding: 20px;
    }
    
    .hero-concerns p {
        font-size: 16px;
        line-height: 1.9;
    }
    
    .section-heading {
        font-size: 23px;
        margin-bottom: 32px;
    }
    
    .text-content {
        font-size: 16px;
    }
    
    .emphasis-text {
        font-size: 18px;
    }
    
    .emphasis-block {
        font-size: 17px;
        padding: 20px;
    }
    
    .emphasis-large {
        font-size: 19px;
    }
    
    .key-message {
        padding: 24px 20px;
    }
    
    .key-message p {
        font-size: 17px;
    }
    
    .feature-list li {
        padding-left: 24px;
        margin-bottom: 14px;
    }
    
    .comparison-card {
        padding: 24px;
    }
    
    .card-heading {
        font-size: 17px;
    }
    
    .final-message {
        padding: 24px 20px;
    }
    
    .final-message p {
        font-size: 16px;
    }
    
    .cta-intro {
        font-size: 17px;
    }
    
    .cta-button {
        padding: 14px 32px;
        font-size: 15px;
        min-height: 48px;
    }
    
    .cta-button.primary-cta {
        font-size: 16px;
        padding: 16px 36px;
    }
    
    .cta-button.primary-cta.large {
        font-size: 17px;
        padding: 18px 40px;
    }
    
    .mobile-fixed-cta {
        display: block;
    }
    
    /* 最終CTAセクションまでスクロールしたら固定CTAを非表示 */
    body.hide-mobile-cta .mobile-fixed-cta {
        transform: translateY(100%);
    }
}

/* ========================================
   アクセシビリティ
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* フォーカス表示の強化 */
a:focus,
button:focus {
    outline: 2px solid var(--color-heading);
    outline-offset: 2px;
}

/* リンク色 */
a {
    color: var(--color-link);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ========================================
   印刷用スタイル
   ======================================== */

@media print {
    .site-header,
    .mobile-fixed-cta,
    .cta-button {
        display: none;
    }
    
    body {
        background-color: white;
    }
    
    .content-section {
        page-break-inside: avoid;
    }
}