/* 医療デザインSplash - Apple風スタイルシート */

/* リセット */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基本設定 */
:root {
    --primary-red: #AF0018;
    --primary-blue: #0071E3;
    --dark: #1d1d1f;
    --gray: #333333;
    --light-gray: #f5f5f7;
    --white: #ffffff;
    --border: rgba(0, 0, 0, 0.1);
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
    background: var(--white);
    color: var(--dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* コンテナ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ヘッダー（Splash独自カラー：青帯＋白文字） */
.header {
    background: var(--primary-blue);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 113, 227, 0.2);
}

.nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 22px;
    font-weight: 600;
    color: var(--white);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    letter-spacing: 0.1em;
}

.logo:hover {
    opacity: 0.9;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: bold;
    font-size: 18px;
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-link {
    color: var(--white);
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    opacity: 0.8;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--white);
    transition: width 0.3s;
}

.nav-link:hover::after {
    width: 100%;
}

/* ボタン */
.btn-primary {
    background: var(--primary-blue);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    display: inline-block;
}

.btn-primary:hover {
    background: #0056b3;
    transform: scale(1.05);
}

/* CTA専用ボタン（赤・ワンポイント） */
.btn-cta {
    background: var(--primary-red);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    display: inline-block;
}

.btn-cta:hover {
    background: #8f0014;
    transform: scale(1.05);
}

/* ヒーローセクション */
.hero {
    margin-top: 0;
    padding: 60px 20px;
    text-align: center;
    background: url('/assets/images/splash_kv.png') center center / cover no-repeat;
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.5);
    z-index: 0;
}

.hero > * {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(40px, 8vw, 72px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    color: #333333;
    animation: fadeInUp 0.8s ease;
    -webkit-text-stroke: 5px white;
    paint-order: stroke fill;
}

.hero-catchcopy {
    font-size: 29px;
    margin-bottom: 20px;
    font-weight: 700;
    color: #1d1d1f;
    line-height: 1.4;
    -webkit-text-stroke: 5px white;
    paint-order: stroke fill;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero .subtitle {
    font-size: clamp(18px, 3vw, 24px);
    font-weight: 600;
    color: var(--gray);
    margin-bottom: 48px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease 0.2s both;
    -webkit-text-stroke: 5px white;
    paint-order: stroke fill;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.btn-hero {
    padding: 16px 32px;
    font-size: 18px;
    border-radius: 28px;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    display: inline-block;
}

.btn-hero-primary {
    background: var(--primary-blue);
    color: white;
}

.btn-hero-primary:hover {
    background: #0056b3;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 113, 227, 0.3);
}

.btn-hero-secondary {
    background: white;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-hero-secondary:hover {
    background: var(--primary-blue);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 113, 227, 0.3);
}

.btn-hero-compass {
    background: white;
    color: var(--primary-red);
    border: 2px solid var(--primary-red);
}

.btn-hero-compass:hover {
    background: var(--primary-red);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(175, 0, 24, 0.5);
}

/* 特徴セクション */
.features {
    padding: 100px 20px;
}

.features h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 600;
    text-align: center;
    margin-bottom: 60px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-card {
    background: var(--light-gray);
    border-radius: 20px;
    padding: 40px;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: #EEEEEE;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    text-align: center;
}

.feature-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--dark);
    text-align: center;
}

.feature-description {
    font-size: 16px;
    color: var(--gray);
    line-height: 1.6;
    text-align: left;
}

/* GPTsプレビュー */
.gpts-preview {
    padding: 100px 20px;
    background: var(--light-gray);
}

.gpts-preview h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 600;
    text-align: center;
    margin-bottom: 60px;
}

.category-tabs {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.category-tab {
    padding: 12px 24px;
    background: white;
    border: 2px solid transparent;
    border-radius: 20px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    color: var(--dark);
}

.category-tab:hover {
    border-color: var(--primary-blue);
}

.category-tab.active {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

.gpts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.gpt-card {
    background: white;
    border-radius: 16px;
    padding: 24px;
    transition: var(--transition);
    cursor: pointer;
    opacity: 0;
    animation: fadeInUp 0.5s ease forwards;
}

.gpt-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.gpt-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--dark);
    text-align: center;
}

.gpt-card p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.5;
    text-align: left;
}

.gpt-tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--light-gray);
    border-radius: 12px;
    font-size: 12px;
    color: var(--gray);
    margin-top: 12px;
}

/* 価格セクション */
.pricing {
    padding: 100px 20px;
}

.pricing h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 600;
    text-align: center;
    margin-bottom: 60px;
}

.pricing-card {
    max-width: 400px;
    margin: 0 auto;
    background: white;
    border-radius: 24px;
    padding: 48px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.15);
}

.price-tag {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 8px;
}

.price-period {
    font-size: 18px;
    color: var(--gray);
    margin-bottom: 24px;
}

.price-features {
    list-style: none;
    padding: 0;
    margin: 32px 0;
}

.price-features li {
    padding: 12px 0;
    border-bottom: 1px solid var(--light-gray);
    color: var(--dark);
    font-size: 16px;
}

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

/* フッター */
.footer {
    background: var(--dark);
    color: white;
    padding: 60px 20px 40px;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.footer-link {
    color: white;
    text-decoration: none;
    font-size: 14px;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-link:hover {
    opacity: 1;
}

.copyright {
    font-size: 12px;
    opacity: 0.6;
}

/* アニメーション */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* モバイル改行用 */
.br-mobile {
    display: none;
}

/* レスポンシブ */
@media (max-width: 768px) {
    .br-mobile {
        display: inline;
    }

    .nav-links {
        gap: 16px;
    }

    .nav-link:not(.btn-primary) {
        display: none;
    }

    .hero {
        padding: 80px 20px;
    }

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

    .category-tabs {
        gap: 8px;
    }

    .category-tab {
        padding: 8px 16px;
        font-size: 12px;
    }
}

/* フォーム要素 */
.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 16px;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.1);
}

.form-error {
    color: #ff3b30;
    font-size: 14px;
    margin-top: 4px;
}

.form-success {
    color: #34c759;
    font-size: 14px;
    margin-top: 4px;
}

/* 問題提起セクション */
.problem-section {
    padding: 100px 20px;
    background: var(--white);
}

.problem-section h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 600;
    text-align: center;
    margin-bottom: 60px;
    color: var(--dark);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.problem-card {
    background: var(--light-gray);
    border-radius: 20px;
    padding: 40px;
    transition: var(--transition);
    text-align: center;
}

.problem-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
}

.problem-number {
    width: 60px;
    height: 60px;
    background: var(--primary-blue);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    margin: 0 auto 24px;
}

.problem-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--dark);
}

.problem-quote {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 16px;
    font-style: italic;
}

.problem-description {
    font-size: 16px;
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 24px;
}

.problem-cta {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-blue);
}

/* ソリューションセクション */
.solution-section {
    padding: 100px 20px;
    background: var(--light-gray);
}

.solution-section h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 600;
    text-align: center;
    margin-bottom: 60px;
    color: var(--dark);
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.solution-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    transition: var(--transition);
    text-align: center;
}

.solution-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
}

.solution-icon {
    font-size: 60px;
    margin-bottom: 24px;
}

.solution-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--dark);
}

.solution-subtitle {
    font-size: 16px;
    color: var(--gray);
    margin-bottom: 24px;
}

.solution-list {
    list-style: none;
    padding: 0;
    margin: 24px 0;
    text-align: left;
}

.solution-list li {
    padding: 8px 0;
    color: var(--dark);
    font-size: 15px;
    position: relative;
    padding-left: 24px;
}

.solution-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: 600;
}

.solution-highlight {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-blue);
    margin-top: 24px;
}

.solution-description {
    font-size: 16px;
    color: var(--gray);
    line-height: 1.6;
    margin-bottom: 24px;
}

.solution-pricing {
    margin-top: 24px;
    text-align: left;
}

.price-old {
    font-size: 14px;
    color: var(--gray);
    text-decoration: line-through;
}

.price-campaign {
    font-size: 16px;
    color: var(--dark);
    margin: 8px 0;
}

.price-campaign span {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-blue);
}

.price-referral {
    font-size: 16px;
    color: var(--dark);
}

.price-referral span {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-blue);
}

/* ストーリーセクション */
.story-section {
    padding: 100px 20px;
    background: var(--white);
}

.story-section h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 600;
    text-align: center;
    margin-bottom: 60px;
    color: var(--dark);
}

.story-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.story-text {
    font-size: 18px;
    line-height: 1.8;
    color: var(--dark);
    margin-bottom: 32px;
}

.story-highlight {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-blue);
    margin: 48px 0 32px;
}

.story-answer {
    font-size: 20px;
    line-height: 1.8;
    color: var(--dark);
    margin-bottom: 32px;
}

.story-requirements {
    list-style: none;
    padding: 0;
    margin: 32px auto;
    max-width: 500px;
    text-align: left;
}

.story-requirements li {
    padding: 12px 0;
    font-size: 18px;
    color: var(--dark);
    position: relative;
    padding-left: 32px;
}

.story-requirements li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 20px;
}

.story-vision {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary-blue);
    margin-top: 48px;
    line-height: 1.6;
}

.developer-card-inline {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    margin-top: 48px;
    margin-bottom: 0;
    padding: 0;
    background: transparent;
}

.developer-photo-inline {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    border: 4px solid var(--light-gray);
}

.developer-info-inline {
    flex: 1;
    text-align: center;
}

.developer-info-inline h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--dark);
}

.developer-title-inline {
    font-size: 16px;
    color: var(--gray);
    line-height: 1.6;
    margin: 0;
}

/* GPTsショーケース */
.section-subtitle {
    text-align: center;
    font-size: 16px;
    color: var(--gray);
    margin-top: -40px;
    margin-bottom: 40px;
    line-height: 1.6;
}

@media (max-width: 767px) {
    .section-subtitle {
        font-size: 18px;
        line-height: 1.7;
        margin-top: -30px;
        margin-bottom: 30px;
    }
}

.gpts-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 48px;
}

@media (max-width: 767px) {
    .gpts-showcase {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

.gpt-preview-card {
    background: white;
    border-radius: 16px;
    padding: 32px;
    transition: var(--transition);
}

@media (max-width: 767px) {
    .gpt-preview-card {
        padding: 28px 24px;
    }
}

.gpt-preview-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.gpt-preview-icon {
    font-size: 48px;
    margin-bottom: 16px;
    text-align: center;
}

@media (max-width: 767px) {
    .gpt-preview-icon {
        font-size: 56px;
        margin-bottom: 20px;
    }
}

.gpt-preview-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--dark);
    text-align: center;
    line-height: 1.5;
}

@media (max-width: 767px) {
    .gpt-preview-card h3 {
        font-size: 18px;
        margin-bottom: 16px;
        line-height: 1.5;
    }
}

.gpt-preview-card p {
    font-size: 16px;
    color: var(--gray);
    line-height: 1.6;
    margin-bottom: 0;
    text-align: center;
}

@media (max-width: 767px) {
    .gpt-preview-card p {
        font-size: 16px;
        line-height: 1.7;
    }
}

.gpt-category {
    display: inline-block;
    padding: 6px 12px;
    background: var(--light-gray);
    border-radius: 12px;
    font-size: 12px;
    color: var(--gray);
    font-weight: 500;
}

.gpts-cta {
    text-align: center;
}

/* 開発者紹介セクション */
.developer-section {
    padding: 100px 20px;
    background: var(--light-gray);
}

.developer-section h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 600;
    text-align: center;
    margin-bottom: 60px;
}

.developer-card {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    padding: 48px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
}

@media (min-width: 768px) {
    .developer-card {
        flex-direction: row;
        text-align: left;
    }
}

.developer-photo {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    border: 4px solid var(--light-gray);
}

@media (max-width: 767px) {
    .developer-photo {
        order: -1;
    }
}

.developer-info {
    flex: 1;
}

.developer-info h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--dark);
}

.developer-title {
    font-size: 16px;
    color: var(--gray);
    margin-bottom: 32px;
}

.developer-bio {
    font-size: 16px;
    line-height: 1.8;
    color: var(--dark);
    margin-bottom: 32px;
}

.developer-philosophy {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary-blue);
    margin: 32px 0;
    line-height: 1.6;
}

.developer-message {
    font-size: 16px;
    line-height: 1.8;
    color: var(--dark);
    margin-bottom: 32px;
}

.developer-encouragement {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary-blue);
    line-height: 1.8;
}

/* 価格セクション */
.pricing-section {
    padding: 100px 20px;
    background: var(--white);
}

.pricing-section h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 600;
    text-align: center;
    margin-bottom: 60px;
}

.pricing-table {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    max-width: 900px;
    margin: 0 auto 40px;
}

.pricing-column {
    background: white;
    border: 2px solid var(--border);
    border-radius: 20px;
    padding: 40px;
    transition: var(--transition);
    text-align: center;
}

.pricing-column:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.pricing-column.highlighted {
    border-color: var(--primary-blue);
    position: relative;
}

.pricing-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-blue);
    color: white;
    padding: 6px 16px;
    border-radius: 16px;
    font-size: 12px;
    font-weight: 600;
}

.pricing-header h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--dark);
}

.pricing-plan-price {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 8px;
}

.pricing-plan-period {
    font-size: 16px;
    color: var(--gray);
    margin-bottom: 24px;
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin: 32px 0;
}

.pricing-features li {
    padding: 12px 0;
    border-bottom: 1px solid var(--light-gray);
    color: var(--dark);
    font-size: 16px;
}

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

.pricing-note {
    text-align: center;
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
}

/* アップグレードセクション */
.upgrade-section {
    padding: 100px 20px;
    background: #FBF5F5;
}

.upgrade-section h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 600;
    text-align: center;
    margin-bottom: 60px;
}

.upgrade-content {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    padding: 48px;
    text-align: center;
}

.upgrade-intro {
    font-size: 18px;
    line-height: 1.8;
    color: var(--dark);
    margin-bottom: 32px;
}

.upgrade-content h3 {
    font-size: 24px;
    font-weight: 600;
    margin: 32px 0 16px;
    color: var(--dark);
}

.upgrade-features {
    list-style: none;
    padding: 0;
    margin: 24px 0;
    text-align: left;
}

.upgrade-features li {
    padding: 12px 0;
    font-size: 16px;
    color: var(--dark);
    position: relative;
    padding-left: 28px;
}

.upgrade-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 18px;
}

.upgrade-pricing {
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark);
    margin: 32px 0;
}

/* FAQセクション */
.faq-section {
    padding: 100px 20px;
    background: var(--light-gray);
}

.faq-section h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 600;
    text-align: center;
    margin-bottom: 60px;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: 16px;
    padding: 32px;
    margin-bottom: 20px;
    transition: var(--transition);
}

.faq-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.05);
}

.faq-question {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 12px;
}

.faq-answer {
    font-size: 18px;
    line-height: 1.8;
    color: var(--gray);
}

/* 最終CTAセクション */
.final-cta-section {
    padding: 100px 20px;
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--primary-blue) 100%);
    color: white;
    text-align: center;
}

.final-cta-section h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 600;
    text-align: center;
    margin-bottom: 24px;
    color: white;
}

.final-cta-subtitle {
    text-align: center;
    font-size: 16px;
    margin-bottom: 48px;
    color: rgba(255, 255, 255, 0.9);
}

.final-cta-section .btn-hero {
    display: inline-block;
    background: transparent;
    color: white;
    border: 2px solid white;
    font-size: 20px;
    padding: 20px 48px;
    transition: all 0.3s;
}

.final-cta-section .btn-hero:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* フッターブランド */
.footer-brand {
    margin-bottom: 32px;
}

.footer-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.footer-subtitle {
    font-size: 14px;
    opacity: 0.8;
}

/* レスポンシブ（追加） */
@media (max-width: 768px) {
    .problem-grid,
    .solution-grid {
        grid-template-columns: 1fr;
    }

    .gpts-showcase {
        grid-template-columns: 1fr;
    }

    .pricing-table {
        grid-template-columns: 1fr;
    }

    .story-text,
    .story-answer {
        font-size: 16px;
    }

    .story-highlight {
        font-size: 24px;
    }

    .developer-card,
    .upgrade-content {
        padding: 32px 24px;
    }

    .container {
        padding: 0 16px;
    }

    .features {
        padding: 60px 16px;
    }

    .gpts-preview {
        padding: 60px 16px;
    }

    .pricing {
        padding: 60px 16px;
    }

    .problem-section {
        padding: 60px 16px;
    }

    .solution-section {
        padding: 60px 16px;
    }

    .story-section {
        padding: 60px 16px;
    }

    .developer-section {
        padding: 60px 16px;
    }

    .upgrade-section {
        padding: 60px 16px;
    }

    .faq-section {
        padding: 60px 16px;
    }

    .final-cta-section {
        padding: 60px 16px;
    }

    .feature-card,
    .problem-card,
    .solution-card {
        padding: 24px;
    }

    .faq-item {
        padding: 20px;
    }

    .faq-question {
        font-size: 16px;
    }

    .faq-answer {
        font-size: 14px;
    }
}

@media (max-width: 375px) {
    .features {
        padding: 40px 12px;
    }

    .features h2 {
        font-size: 28px;
        margin-bottom: 40px;
    }

    .feature-grid {
        gap: 20px;
    }

    .feature-card {
        padding: 20px;
    }

    .feature-title {
        font-size: 18px;
    }

    .feature-description {
        font-size: 14px;
    }

    .problem-section {
        padding: 40px 12px;
    }

    .problem-section h2 {
        font-size: 20px;
        margin-bottom: 30px;
    }

    .problem-card {
        padding: 16px;
    }

    .problem-number {
        width: 50px;
        height: 50px;
        font-size: 24px;
    }

    .problem-card h3 {
        font-size: 16px;
    }

    .problem-quote {
        font-size: 16px;
    }

    .problem-description {
        font-size: 16px;
    }

    .solution-section {
        padding: 40px 12px;
    }

    .solution-section h2 {
        font-size: 20px;
        margin-bottom: 30px;
    }

    .solution-card {
        padding: 16px;
    }

    .solution-card h3 {
        font-size: 16px;
    }

    .solution-icon {
        font-size: 48px;
    }

    .story-section {
        padding: 40px 12px;
    }

    .story-section h2 {
        font-size: 20px;
        margin-bottom: 30px;
    }

    .story-text {
        font-size: 16px;
    }

    .story-highlight {
        font-size: 18px;
    }

    .story-answer {
        font-size: 16px;
    }

    .developer-section {
        padding: 40px 12px;
    }

    .developer-section h2 {
        font-size: 20px;
        margin-bottom: 30px;
    }

    .developer-card {
        padding: 20px;
    }

    .developer-info h3 {
        font-size: 20px;
    }

    .developer-title {
        font-size: 16px;
    }

    .developer-bio {
        font-size: 16px;
    }

    .developer-philosophy {
        font-size: 16px;
    }

    .developer-message {
        font-size: 16px;
    }

    .developer-encouragement {
        font-size: 16px;
    }

    .upgrade-section {
        padding: 40px 12px;
    }

    .upgrade-section h2 {
        font-size: 20px;
        margin-bottom: 30px;
    }

    .upgrade-content {
        padding: 20px;
        max-width: 100%;
    }

    .upgrade-intro {
        font-size: 16px;
    }

    .upgrade-content h3 {
        font-size: 18px;
    }

    .upgrade-features li {
        font-size: 16px;
    }

    .faq-section {
        padding: 40px 12px;
    }

    .faq-section h2 {
        font-size: 20px;
        margin-bottom: 30px;
    }

    .faq-list {
        max-width: 100%;
    }

    .faq-item {
        padding: 16px;
    }

    .faq-question {
        font-size: 18px;
    }

    .faq-answer {
        font-size: 16px;
    }

    .final-cta-section {
        padding: 40px 12px;
    }

    .final-cta-section h2 {
        font-size: 20px;
        margin-bottom: 16px;
    }

    .final-cta-subtitle {
        font-size: 16px;
        margin-bottom: 30px;
    }

    .btn-hero {
        padding: 12px 24px;
        font-size: 16px;
        border-radius: 24px;
    }

    .gpts-preview {
        padding: 40px 12px;
    }

    .gpts-preview h2 {
        font-size: 20px;
        margin-bottom: 30px;
    }

    .gpts-showcase {
        gap: 12px;
    }

    .gpt-preview-card {
        padding: 16px;
    }

    .gpt-preview-icon {
        font-size: 36px;
    }

    .gpt-preview-card h3 {
        font-size: 18px;
    }

    .gpt-preview-card p {
        font-size: 16px;
    }

    .pricing {
        padding: 40px 12px;
    }

    .pricing h2 {
        font-size: 20px;
        margin-bottom: 30px;
    }

    .pricing-table {
        max-width: 100%;
    }

    .pricing-column {
        padding: 20px;
    }

    .pricing-header h3 {
        font-size: 18px;
    }

    .pricing-plan-price {
        font-size: 32px;
    }

    .pricing-features li {
        font-size: 13px;
    }
}/* Updated: 2025-11-24 13:21:50 - Mobile text sizes increased to 16px+ */