/* ========================================
   リセット & 基本設定
   ======================================== */
:root {
    /* カラーパレット */
    --primary-color: #2d6a4f;
    --primary-dark: #1b4332;
    --primary-light: #40916c;
    --accent-color: #f4a261;
    --accent-dark: #e76f51;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --text-dark: #2b2d42;
    --text-gray: #6c757d;
    --text-light: #8d99ae;
    --border-color: #e0e0e0;
    
    /* タイポグラフィ */
    --font-primary: 'Noto Sans JP', sans-serif;
    --font-accent: 'Zen Maru Gothic', sans-serif;
    
    /* スペーシング */
    --section-padding: 100px 0;
    --container-padding: 0 20px;
    --border-radius: 12px;
    
    /* トランジション */
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    line-height: 1.7;
    background-color: var(--bg-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* ========================================
   ヘッダー & ナビゲーション
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.nav__logo .logo-text {
    font-family: var(--font-accent);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 2px;
}

.nav__menu {
    display: flex;
    list-style: none;
    gap: 35px;
    align-items: center;
}

.nav__link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-dark);
    transition: var(--transition);
    position: relative;
}

.nav__link:hover {
    color: var(--primary-color);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav__link:hover::after {
    width: 100%;
}

.nav__link--cta {
    background: var(--primary-color);
    color: white;
    padding: 10px 24px;
    border-radius: 25px;
}

.nav__link--cta:hover {
    background: var(--primary-dark);
    color: white;
}

.nav__link--cta::after {
    display: none;
}

.nav__toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--primary-color);
    cursor: pointer;
}

/* ========================================
   ヒーローセクション
   ======================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(45, 106, 79, 0.85), rgba(27, 67, 50, 0.75)),
                url('../images/hero-papaya.jpg') center/cover no-repeat;
    color: white;
    text-align: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 50%, rgba(64, 145, 108, 0.3), transparent 60%);
    animation: gradientShift 8s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero__content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 0 20px;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero__title {
    font-family: var(--font-accent);
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 25px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero__title--impact {
    font-size: 4.5rem;
    font-weight: 900;
    letter-spacing: 2px;
    white-space: nowrap;
}

.hero__tagline {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    margin-bottom: 30px;
    opacity: 0.95;
}

.hero__tagline-text {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 4px;
    font-family: var(--font-accent);
}

.hero__tagline-sub {
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 2px;
    font-style: italic;
}

.hero__subtitle {
    font-size: 1.2rem;
    font-weight: 400;
    line-height: 1.8;
    margin-bottom: 40px;
    opacity: 0.95;
}

.hero__subtitle--large {
    font-size: 1.4rem;
    line-height: 2;
}

.hero__subtitle .highlight {
    color: var(--accent-color);
    font-weight: 700;
    font-size: 1.5rem;
}

.hero__cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero__scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: white;
    font-size: 0.85rem;
    opacity: 0.8;
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translate(-50%, 0); }
    50% { transform: translate(-50%, 10px); }
}

.hero__scroll-line {
    width: 1px;
    height: 30px;
    background: white;
}

/* ========================================
   ボタンスタイル
   ======================================== */
.btn {
    display: inline-block;
    padding: 14px 35px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

.btn--primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(45, 106, 79, 0.3);
}

.btn--secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn--secondary:hover {
    background: white;
    color: var(--primary-color);
}

.btn--accent {
    background: var(--accent-color);
    color: white;
}

.btn--accent:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(244, 162, 97, 0.4);
}

.btn--outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn--outline:hover {
    background: var(--primary-color);
    color: white;
}

.btn--large {
    padding: 16px 45px;
    font-size: 1.1rem;
}

.btn--block {
    display: block;
    width: 100%;
}

.btn--instagram {
    background: linear-gradient(135deg, #833ab4, #fd1d1d, #fcb045);
    color: white;
    font-size: 1.1rem;
    padding: 14px 35px;
}

.btn--instagram:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(131, 58, 180, 0.4);
}

/* ========================================
   セクション共通
   ======================================== */
section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-family: var(--font-accent);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--accent-color);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-gray);
    margin-top: 20px;
}

/* ========================================
   なぜ青パパイヤ？（圧倒的強調セクション）
   ======================================== */
.why-papaya {
    background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
    color: var(--text-dark);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.why-papaya::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(45, 106, 79, 0.08), transparent 50%);
    animation: pulseGlow 8s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.why-papaya__hero {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
    z-index: 2;
}

.why-papaya__title {
    font-size: 3.5rem;
    font-weight: 900;
    font-family: var(--font-accent);
    color: var(--primary-color);
    margin-bottom: 25px;
    text-shadow: 0 2px 10px rgba(45, 106, 79, 0.2);
    letter-spacing: 2px;
}

.why-papaya__lead {
    font-size: 1.6rem;
    line-height: 1.9;
    color: var(--text-dark);
    max-width: 800px;
    margin: 0 auto;
}

.why-papaya__lead .emphasis {
    color: var(--accent-color);
    font-size: 2rem;
    font-weight: 900;
    text-shadow: 0 2px 8px rgba(244, 162, 97, 0.3);
}

.why-papaya__grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.why-papaya__side {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.why-papaya__card {
    background: white;
    border: 2px solid rgba(45, 106, 79, 0.15);
    border-radius: var(--border-radius);
    padding: 50px 40px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.why-papaya__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
    border-color: var(--primary-color);
}

.why-papaya__card--hero {
    background: white;
}

.why-papaya__card--concept {
    background: linear-gradient(135deg, #fff8f0, #ffe8d6);
    border: 3px solid var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px 30px;
    color: var(--text-dark);
}

.why-papaya__card--image {
    padding: 0;
    overflow: hidden;
    border: none;
}

.why-papaya__visual {
    width: 100%;
    height: 250px;
    overflow: hidden;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    margin: -50px -40px 30px -40px;
}

.why-papaya__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.why-papaya__card:hover .why-papaya__image {
    transform: scale(1.05);
}

.why-papaya__product {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.why-papaya__card--image:hover .why-papaya__product {
    transform: scale(1.05);
}

.why-papaya__icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 30px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    box-shadow: 0 8px 30px rgba(244, 162, 97, 0.4);
}

.why-papaya__card-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 25px;
    text-align: center;
    font-family: var(--font-accent);
    text-shadow: none;
}

.why-papaya__text {
    font-size: 1.3rem;
    line-height: 2;
    margin-bottom: 30px;
    color: var(--text-dark);
}

.why-papaya__features {
    list-style: none;
    padding: 0;
}

.why-papaya__features li {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 18px;
    font-size: 1.2rem;
    padding: 12px 20px;
    background: rgba(45, 106, 79, 0.05);
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
    color: var(--text-dark);
}

.why-papaya__features li > * {
    display: inline;
}

.feature-note {
    display: block;
    font-size: 0.85rem;
    color: var(--text-gray);
    margin-top: 5px;
    font-style: italic;
}

.why-papaya__features i {
    font-size: 1.5rem;
    color: var(--accent-color);
}

.why-papaya__card--concept h4 {
    font-size: 1.8rem;
    line-height: 1.8;
    font-weight: 700;
}

.why-papaya__card--concept .highlight {
    color: var(--accent-color);
    font-size: 2rem;
    font-weight: 900;
}

/* ========================================
   青パパイヤの圧倒的な数値（比較表）
   ======================================== */
.comparison {
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
    border-top: 3px solid var(--accent-color);
}

.comparison-table {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.comparison-item {
    background: white;
    padding: 35px 25px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.comparison-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-dark));
}

.comparison-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.comparison-item__badge {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 15px;
}

.comparison-item__badge i {
    font-size: 1rem;
}

.comparison-item__title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.comparison-item__comparison {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-gray);
    margin-bottom: 5px;
}

.comparison-item__value {
    font-size: 2.8rem;
    font-weight: 900;
    color: var(--accent-dark);
    margin-bottom: 20px;
    font-family: var(--font-accent);
    line-height: 1.2;
}

.comparison-item__desc {
    color: var(--text-gray);
    line-height: 1.8;
    font-size: 0.95rem;
}

.comparison-credit {
    text-align: center;
    margin-top: 20px;
}

.comparison-credit p {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--text-gray);
    background: var(--bg-light);
    padding: 12px 25px;
    border-radius: 25px;
    border: 2px solid var(--border-color);
}

.comparison-credit i {
    color: var(--accent-color);
    font-size: 1.1rem;
}

/* ========================================
   酵素の3つの力
   ======================================== */
.enzyme-power {
    background: white;
}

/* 商品ビジュアル */
.enzyme-visual {
    margin-bottom: 60px;
}

.enzyme-visual__single {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.enzyme-visual__single img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    transition: var(--transition);
}

.enzyme-visual__single img:hover {
    transform: scale(1.02);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
}

.enzyme-visual__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.enzyme-visual__item {
    text-align: center;
}

.enzyme-visual__item img {
    width: 100%;
    max-width: 350px;
    height: 350px;
    object-fit: cover;
    border-radius: var(--border-radius);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    transition: var(--transition);
}

.enzyme-visual__item img:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
}

.enzyme-visual__caption {
    margin-top: 15px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
}

.enzyme-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 35px;
}

.enzyme-card {
    background: var(--bg-light);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    position: relative;
}

.enzyme-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.enzyme-card__number {
    position: absolute;
    top: 20px;
    right: 25px;
    font-size: 3.5rem;
    font-weight: 900;
    color: rgba(45, 106, 79, 0.08);
    font-family: var(--font-accent);
}

.enzyme-card__icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
}

.enzyme-card__catchcopy {
    font-size: 1.65rem;
    font-weight: 700;
    color: var(--accent-color);
    text-align: center;
    margin-bottom: 10px;
    letter-spacing: 0.05em;
}

.enzyme-card__title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
    text-align: center;
}

.enzyme-card__content p {
    color: var(--text-dark);
    line-height: 1.9;
    margin-bottom: 20px;
}

.enzyme-card__benefits {
    list-style: none;
    padding: 0;
}

.enzyme-card__benefits li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    color: var(--text-gray);
}

.enzyme-card__benefits i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* ========================================
   トピックス（最新研究情報）
   ======================================== */
.topics {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: var(--section-padding);
}

.topics-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 15px;
}

.topic-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 50px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    overflow-x: hidden;
    word-wrap: break-word;
}

.topic-card--featured {
    border-top: 5px solid var(--primary-color);
}

.topic-card__label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.topic-card__label i {
    font-size: 1.1rem;
}

.topic-card__title {
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 15px;
    line-height: 1.4;
}

.topic-card__date {
    font-size: 0.95rem;
    color: var(--text-gray);
    margin-bottom: 30px;
    font-weight: 500;
}

.topic-card__content {
    overflow-x: hidden;
    word-wrap: break-word;
}

.topic-card__lead {
    font-size: 1.2rem;
    line-height: 1.9;
    color: var(--text-dark);
    margin-bottom: 40px;
    padding: 20px;
    background: var(--bg-light);
    border-left: 4px solid var(--accent-color);
    border-radius: 4px;
}

.topic-card__subtitle {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 40px 0 25px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-light);
}

.topic-card__subtitle i {
    margin-right: 10px;
    color: var(--accent-color);
}

.topic-card__components {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-bottom: 40px;
}

.component-item {
    display: flex;
    gap: 20px;
    padding: 25px;
    background: var(--bg-light);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.component-item:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.component-item__icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.component-item__content h5 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.component-item__content p {
    color: var(--text-dark);
    line-height: 1.8;
}

.topic-card__research {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-bottom: 40px;
}

.research-item {
    padding: 25px;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.research-item:hover {
    border-color: var(--primary-light);
    box-shadow: 0 5px 20px rgba(45, 106, 79, 0.1);
}

.research-item__header {
    margin-bottom: 15px;
}

.research-item__badge {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.research-item p {
    color: var(--text-dark);
    line-height: 1.9;
}

.research-item .highlight {
    color: var(--accent-color);
    font-weight: 700;
}

.topic-card__note {
    background: linear-gradient(135deg, #fff3cd 0%, #fff8e1 100%);
    padding: 30px;
    border-radius: var(--border-radius);
    border-left: 5px solid var(--accent-color);
    margin-bottom: 30px;
}

.topic-card__note .topic-card__subtitle {
    margin-top: 0;
    color: var(--accent-dark);
    border-bottom-color: var(--accent-color);
}

.topic-card__note p {
    color: var(--text-dark);
    line-height: 1.9;
    margin-bottom: 15px;
}

.topic-card__conclusion {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-top: 20px;
}

.topic-card__sources {
    padding: 25px;
    background: var(--bg-light);
    border-radius: var(--border-radius);
}

.topic-card__sources-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.topic-card__sources ul {
    list-style: none;
    padding: 0;
}

.topic-card__sources li {
    padding: 8px 0;
    color: var(--text-gray);
    font-size: 0.95rem;
    border-bottom: 1px solid var(--border-color);
}

.topic-card__sources li:last-child {
    border-bottom: none;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .topic-card {
        padding: 20px 15px;
    }
    
    .topic-card__title {
        font-size: 1.4rem;
        line-height: 1.5;
    }
    
    .topic-card__lead {
        font-size: 1rem;
        padding: 15px;
    }
    
    .topic-card__subtitle {
        font-size: 1.2rem;
    }
    
    .component-item {
        flex-direction: column;
        text-align: center;
        padding: 20px 15px;
    }
    
    .component-item__icon {
        margin: 0 auto 15px;
    }
    
    .component-item__content h5 {
        font-size: 1.1rem;
    }
    
    .component-item__content p {
        font-size: 0.95rem;
    }
    
    .research-item {
        padding: 15px;
    }
    
    .research-item p {
        font-size: 0.95rem;
    }
    
    .topic-card__note {
        padding: 20px 15px;
    }
    
    .topic-card__sources {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    .topic-card {
        padding: 15px 10px;
    }
    
    .topic-card__label {
        font-size: 0.8rem;
        padding: 6px 12px;
    }
    
    .topic-card__title {
        font-size: 1.2rem;
    }
    
    .topic-card__lead {
        font-size: 0.95rem;
        padding: 12px;
    }
    
    .topic-card__subtitle {
        font-size: 1.1rem;
        margin: 30px 0 20px;
    }
    
    .component-item {
        padding: 15px 10px;
    }
    
    .component-item__icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .component-item__content h5 {
        font-size: 1rem;
    }
    
    .component-item__content p {
        font-size: 0.9rem;
    }
    
    .research-item {
        padding: 12px;
    }
    
    .research-item__badge {
        font-size: 0.8rem;
        padding: 4px 10px;
    }
    
    .research-item p {
        font-size: 0.9rem;
    }
    
    .topic-card__note {
        padding: 15px 10px;
    }
    
    .topic-card__conclusion {
        font-size: 1rem;
    }
}

/* ========================================
   商品セクション追加スタイル
   ======================================== */
.section-subheader {
    text-align: center;
    margin: 60px 0 40px;
}

.section-subheader--tea {
    margin-top: 80px;
}

.section-subtitle-large {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.products-grid--somtam,
.products-grid--tea {
    margin-bottom: 60px;
}

.products-grid--trial {
    max-width: 500px;
    margin: 0 auto;
}

.product-card--functional {
    border-left: 4px solid var(--primary-color);
}

.product-card--premium {
    border-left: 4px solid var(--accent-color);
}

.product-card__title .subtitle {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-gray);
    margin-top: 5px;
}

.product-card__target {
    background: var(--bg-light);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.badge--dna {
    background: linear-gradient(135deg, #4a90e2, #357abd);
}

.badge--metabolic {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
}

.badge--skin {
    background: linear-gradient(135deg, #e91e63, #c2185b);
}

.badge--premium {
    background: linear-gradient(135deg, #9c27b0, #7b1fa2);
}

/* ========================================
   創業ストーリー
   ======================================== */
.story {
    background: var(--bg-light);
    padding: 100px 0;
}

.story-content {
    max-width: 900px;
    margin: 0 auto;
}

.story-timeline {
    position: relative;
    padding: 40px 0;
}

.story-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary-color), var(--accent-color));
    transform: translateX(-50%);
}

.story-item {
    position: relative;
    margin-bottom: 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.story-item:nth-child(even) {
    direction: rtl;
}

.story-item:nth-child(even) .story-item__content {
    direction: ltr;
}

.story-item__year {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary-color);
    font-family: var(--font-accent);
    text-align: right;
    padding-right: 40px;
}

.story-item__icon {
    width: 80px;
    height: 80px;
    margin-left: auto;
    margin-right: 40px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    box-shadow: 0 8px 25px rgba(45, 106, 79, 0.3);
}

.story-item__content {
    background: white;
    padding: 35px 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
    position: relative;
}

.story-item__content::before {
    content: '';
    position: absolute;
    left: -15px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-top: 15px solid transparent;
    border-bottom: 15px solid transparent;
    border-right: 15px solid white;
}

.story-item:nth-child(even) .story-item__content::before {
    left: auto;
    right: -15px;
    border-right: none;
    border-left: 15px solid white;
}

.story-item__title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.story-item__text {
    color: var(--text-dark);
    line-height: 2;
    font-size: 1.05rem;
}

.story-item__text .emphasis {
    color: var(--accent-dark);
    font-size: 1.2rem;
    font-weight: 700;
    display: block;
    margin: 15px 0;
}

.story-item--highlight {
    grid-template-columns: 200px 1fr;
    margin-top: 80px;
}

.story-item--highlight .story-item__icon {
    width: 100px;
    height: 100px;
    margin-left: auto;
    margin-right: 40px;
    font-size: 2.5rem;
}

.story-item--highlight .story-item__content {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 50px 40px;
    border: 3px solid var(--accent-color);
}

.story-item--highlight .story-item__content::before {
    border-right: 15px solid var(--primary-color);
}

.story-item--highlight .story-item__title {
    color: white;
    font-size: 2rem;
    margin-bottom: 25px;
    text-align: left;
}

.story-item--highlight .story-item__text {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.2rem;
    line-height: 2.2;
    text-align: left;
}

.story-item--highlight .highlight {
    color: var(--accent-color);
    font-size: 1.4rem;
    font-weight: 900;
    display: block;
    margin-top: 20px;
}

.story-cta {
    text-align: center;
    margin-top: 60px;
}

.story-cta .btn {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.story-cta .btn:hover {
    background: var(--primary-color);
    color: white;
}

/* レスポンシブ対応 */
@media (max-width: 968px) {
    .story-timeline::before {
        left: 40px;
    }

    .story-item {
        grid-template-columns: 80px 1fr;
        gap: 20px;
        direction: ltr !important;
    }

    .story-item__year,
    .story-item__icon {
        margin: 0;
        padding: 0;
        text-align: center;
    }

    .story-item__year {
        font-size: 1.5rem;
        writing-mode: vertical-rl;
        text-orientation: upright;
        letter-spacing: 0.1em;
    }

    .story-item__icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        margin: 0 auto;
    }

    .story-item__content::before {
        left: -15px !important;
        right: auto !important;
        border-right: 15px solid white !important;
        border-left: none !important;
    }

    .story-item--highlight {
        grid-template-columns: 80px 1fr;
    }
    
    .story-item--highlight .story-item__icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        margin: 0 auto;
    }
    
    .story-item--highlight .story-item__content {
        padding: 30px 20px;
    }
    
    .story-item--highlight .story-item__content::before {
        border-right: 15px solid var(--primary-color) !important;
    }
    
    .story-item--highlight .story-item__title,
    .story-item--highlight .story-item__text {
        writing-mode: horizontal-tb;
        text-orientation: mixed;
    }
}

@media (max-width: 640px) {
    .story {
        padding: 60px 0;
    }

    .story-timeline {
        padding: 20px 0;
    }
    
    .story-timeline::before {
        left: 30px;
    }

    .story-item {
        grid-template-columns: 60px 1fr;
        gap: 15px;
    }

    .story-item__year {
        font-size: 1.2rem;
        letter-spacing: 0.05em;
    }

    .story-item__icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }

    .story-item__content {
        padding: 25px 20px;
    }

    .story-item__title {
        font-size: 1.3rem;
    }

    .story-item__text {
        font-size: 0.95rem;
    }

    .story-item__text .emphasis {
        font-size: 1.05rem;
    }
    
    .story-item--highlight {
        grid-template-columns: 60px 1fr;
    }
    
    .story-item--highlight .story-item__icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }

    .story-item--highlight .story-item__content {
        padding: 25px 20px;
    }
    
    .story-item--highlight .story-item__content::before {
        border-right: 15px solid var(--primary-color) !important;
    }

    .story-item--highlight .story-item__title {
        font-size: 1.3rem;
    }

    .story-item--highlight .story-item__text {
        font-size: 0.95rem;
    }
    
    .story-item--highlight .story-item__title,
    .story-item--highlight .story-item__text {
        writing-mode: horizontal-tb;
        text-orientation: mixed;
    }
    
    .story-item--highlight .highlight {
        font-size: 1.1rem;
    }

    .story-item--highlight .highlight {
        font-size: 1.15rem;
    }
}

/* ========================================
   青パパイヤとは
   ======================================== */
.about {
    background: var(--bg-light);
}

.about__intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}

.about__text {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--text-dark);
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 35px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.feature-card--highlight {
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
    border: 3px solid var(--accent-color);
    transform: scale(1.05);
}

.feature-card--highlight .feature-card__icon {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
}

.feature-card--highlight .feature-card__title {
    color: var(--accent-dark);
    font-size: 1.5rem;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.feature-card__icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.feature-card__title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.feature-card__text {
    color: var(--text-gray);
    line-height: 1.8;
}

/* ========================================
   摂り方
   ======================================== */
.howto {
    background: white;
}

.howto-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.howto-card {
    position: relative;
    background: var(--bg-light);
    padding: 50px 30px 35px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
}

.howto-card:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-5px);
}

.howto-card__number {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 3rem;
    font-weight: 700;
    color: rgba(45, 106, 79, 0.1);
    font-family: var(--font-accent);
}

.howto-card:hover .howto-card__number {
    color: rgba(255, 255, 255, 0.2);
}

.howto-card__icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.howto-card:hover .howto-card__icon {
    color: white;
}

.howto-card__title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.howto-card:hover .howto-card__title {
    color: white;
}

.howto-card__text {
    color: var(--text-gray);
    line-height: 1.8;
}

.howto-card:hover .howto-card__text {
    color: rgba(255, 255, 255, 0.95);
}

/* ========================================
   商品セクション
   ======================================== */
.products {
    background: var(--bg-light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.product-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 45px rgba(0, 0, 0, 0.15);
}

.product-card--featured {
    border: 3px solid var(--accent-color);
}

.product-card__image {
    position: relative;
    width: 100%;
    height: 280px;
    overflow: hidden;
}

.product-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-card:hover .product-card__image img {
    transform: scale(1.08);
}

.product-card__badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--primary-color);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.badge--new {
    background: var(--accent-color);
}

.badge--trial {
    background: var(--accent-dark);
}

/* 青パパイヤ粉末茶のカード画像サイズ調整 */
.products-grid--tea .product-card__image {
    height: 220px;
}

.products-grid--tea .product-card__image img {
    object-fit: contain;
    background: white;
}

/* shop.htmlの青パパイヤとモリンガの粉末茶画像を見切れないように表示 */
.product-card__image img[src*="papaya-moringa-tea-single.jpg"],
.product-card__image img[src*="papaya-moringa-tea-set.jpg"],
.product-card__image img[src*="moringa-papaya-tea-2400.jpg"],
.product-card__image img[src*="trial-set-new.jpg"],
.product-card__image img[src*="papaya-tea-large-bag-set.jpg"],
.product-card__image img[src*="papaya-tea-stick-set.jpg"],
.product-card__image img[src*="papaya-tea-large-bag-single.jpg"],
.product-card__image img[src*="papaya-tea-40g.jpg"],
.product-card__image img[src*="smoothie-somtam-set.jpg"],
.product-card__image img[src*="smoothie-set.jpg"],
.product-card__image img[src*="somtam-10set.jpg"],
.product-card__image img[src*="somtam-dish-single.jpg"] {
    object-fit: contain;
    background: white;
    padding: 20px;
}

.product-card__content {
    padding: 30px;
}

.product-card__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.product-card__description {
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 20px;
}

.product-card__features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 25px;
}

.badge {
    background: var(--bg-light);
    color: var(--primary-color);
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.products__cta {
    text-align: center;
}

/* ========================================
   鹿児島一貫体制
   ======================================== */
.production {
    background: white;
}

.production-intro {
    max-width: 900px;
    margin: 0 auto 60px;
    text-align: center;
}

.production-intro__text {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--text-dark);
}

.production-steps {
    max-width: 900px;
    margin: 0 auto 80px;
}

.production-step {
    position: relative;
    padding-left: 80px;
    margin-bottom: 60px;
}

.production-step:last-child {
    margin-bottom: 0;
}

.production-step__number {
    position: absolute;
    left: 0;
    top: 0;
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 700;
    font-family: var(--font-accent);
}

.production-step__content {
    background: var(--bg-light);
    padding: 30px;
    border-radius: var(--border-radius);
}

.production-step__title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.production-step__title i {
    font-size: 1.6rem;
}

.production-step__text {
    color: var(--text-gray);
    line-height: 1.9;
    margin-bottom: 20px;
}

.production-step__images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.production-step__images img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.production-step__images img:hover {
    transform: scale(1.03);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* 収穫動画セクション */
.production-step__video {
    margin: 30px 0;
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.farm-video {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    display: block;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.video-caption {
    text-align: center;
    margin-top: 15px;
    color: var(--text-gray);
    font-size: 0.95rem;
    font-style: italic;
}

.video-caption i {
    color: var(--accent-color);
    margin-right: 5px;
}

/* 旧スタイルも残す（他の場所で使用される可能性のため） */
.production-step__image {
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-top: 20px;
}

.production-step__image img {
    width: 100%;
    height: auto;
}

/* 動画セクション */
.videos {
    margin-top: 80px;
}

.videos__title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 40px;
}

.videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.video-card {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 */
    height: 0;
    overflow: hidden;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.production__cta {
    text-align: center;
    margin-top: 60px;
}

.production__cta-text {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 20px;
}

/* ========================================
   お問い合わせ
   ======================================== */
.contact {
    background: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.required {
    color: var(--accent-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.contact-info {
    background: white;
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
}

.contact-info h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 25px;
}

.contact-info__item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-info__item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 3px;
}

.contact-info__item strong {
    display: block;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.contact-info__item p,
.contact-info__item a {
    color: var(--text-gray);
}

.contact-info__item a:hover {
    color: var(--primary-color);
}

/* ========================================
   フッター
   ======================================== */
.footer {
    background: var(--primary-dark);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
}

.footer-section ul li a:hover {
    color: var(--accent-color);
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* ========================================
   レスポンシブ
   ======================================== */
@media (max-width: 968px) {
    .nav__menu {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 280px;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        padding: 40px 30px;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
        align-items: flex-start;
        gap: 25px;
    }

    .nav__menu.active {
        right: 0;
    }

    .nav__toggle {
        display: block;
    }

    .hero__title {
        font-size: 2.5rem;
    }

    .hero__title--impact {
        font-size: 3rem;
        white-space: nowrap;
    }

    .hero__tagline-text {
        font-size: 1.4rem;
    }

    .hero__subtitle {
        font-size: 1rem;
    }

    .hero__subtitle--large {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .why-papaya__title {
        font-size: 2.5rem;
    }

    .why-papaya__lead {
        font-size: 1.2rem;
    }

    .why-papaya__grid {
        grid-template-columns: 1fr;
    }

    .why-papaya__visual {
        height: 200px;
        margin: -30px -20px 20px -20px;
    }

    .why-papaya__card--concept h4 {
        font-size: 1.4rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .production-step {
        padding-left: 0;
        padding-top: 70px;
    }

    .production-step__number {
        left: 50%;
        transform: translateX(-50%);
    }
}

@media (max-width: 640px) {
    :root {
        --section-padding: 60px 0;
    }

    .hero {
        height: 80vh;
        min-height: 600px;
    }

    .hero__title {
        font-size: 2rem;
    }

    .hero__title--impact {
        font-size: 2.3rem;
        white-space: nowrap;
        letter-spacing: 1px;
    }

    .hero__tagline-text {
        font-size: 1.2rem;
    }

    .hero__tagline-sub {
        font-size: 0.85rem;
    }

    .hero__subtitle--large {
        font-size: 1rem;
    }

    .hero__subtitle .highlight {
        font-size: 1.2rem;
    }

    .hero__cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .why-papaya {
        padding: 60px 0;
    }

    .why-papaya__title {
        font-size: 2rem;
    }

    .why-papaya__lead {
        font-size: 1.1rem;
    }

    .why-papaya__lead .emphasis {
        font-size: 1.4rem;
    }

    .why-papaya__card {
        padding: 30px 20px;
    }

    .why-papaya__visual {
        height: 180px;
        margin: -30px -20px 20px -20px;
    }

    .why-papaya__card-title {
        font-size: 2rem;
    }

    .why-papaya__text {
        font-size: 1.1rem;
    }

    .why-papaya__features li {
        font-size: 1rem;
    }

    .why-papaya__card--concept h4 {
        font-size: 1.2rem;
    }

    .why-papaya__card--concept .highlight {
        font-size: 1.5rem;
    }

    .features,
    .products-grid,
    .howto-grid,
    .videos-grid,
    .comparison-table,
    .enzyme-cards {
        grid-template-columns: 1fr;
    }
    
    .topics-container {
        padding: 0 10px;
    }
    
    .topic-card {
        padding: 20px 15px;
        border-radius: 8px;
    }
    
    .topic-card__title {
        font-size: 1.3rem;
        line-height: 1.4;
        word-break: break-word;
    }
    
    .topic-card__lead {
        font-size: 0.95rem;
        padding: 12px;
        margin-bottom: 30px;
    }
    
    .topic-card__subtitle {
        font-size: 1.1rem;
        margin: 25px 0 15px;
    }
    
    .component-item,
    .research-item {
        padding: 15px 12px;
    }
    
    .topic-card__note {
        padding: 15px 12px;
    }
    
    .topic-card__sources {
        padding: 15px 12px;
    }

    .nav {
        padding: 15px 20px;
    }

    .contact-form,
    .contact-info {
        padding: 25px;
    }

    .comparison-item__value {
        font-size: 1.8rem;
    }

    .comparison-item__comparison {
        font-size: 0.9rem;
    }

    .enzyme-card__number {
        font-size: 2.5rem;
    }

    .section-subtitle-large {
        font-size: 1.3rem;
    }
}

/* 極小画面（iPhone SE等）用 */
@media (max-width: 400px) {
    .hero__title--impact {
        font-size: 1.8rem;
        white-space: nowrap;
    }
}

/* AOS Animation Library */
[data-aos] {
    opacity: 0;
    transition-property: opacity, transform;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

[data-aos="fade-right"] {
    transform: translateX(-30px);
}

[data-aos="fade-right"].aos-animate {
    transform: translateX(0);
}

[data-aos="fade-left"] {
    transform: translateX(30px);
}

[data-aos="fade-left"].aos-animate {
    transform: translateX(0);
}

[data-aos="zoom-in"] {
    transform: scale(0.9);
}

[data-aos="zoom-in"].aos-animate {
    transform: scale(1);
}