/* リセット & ベーススタイル */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: #333;
    line-height: 1.6;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
}

/* ヘッダー */
.header {
    background-color: #fff;
    height: 62px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header-container {
    max-width: 1440px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 60px;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    width: 60px;
    height: 60px;
}

.logo-text {
    height: 31px;
}

.header-nav {
    display: flex;
    gap: 24px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: #4CAF50;
    text-shadow: 0 2px 8px rgba(76, 175, 80, 0.3);
}

.header-cta {
    display: flex;
    gap: 16px;
}

.mobile-menu-btn {
    display: none;
}

/* ボタン */
.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 4px;
    font-size: 15px;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-outline {
    border: 1px solid #4CAF50;
    color: #4CAF50;
    background-color: transparent;
    box-shadow: 0 2px 8px rgba(76, 175, 80, 0.2);
}

.btn-outline:hover {
    background-color: #4CAF50;
    color: #fff;
    box-shadow: 0 4px 16px rgba(76, 175, 80, 0.3);
    transform: translateY(-2px);
}

.btn-primary {
    background-color: #4CAF50;
    color: #fff;
    border: 1px solid #4CAF50;
    box-shadow: 0 4px 16px rgba(76, 175, 80, 0.3);
}

.btn-primary:hover {
    background-color: #45a049;
    box-shadow: 0 6px 24px rgba(76, 175, 80, 0.4);
    transform: translateY(-2px);
}

.btn-white {
    background-color: #fff;
    color: #4CAF50;
    border: 1px solid #fff;
    padding: 12px 32px;
    font-size: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.btn-white:hover {
    background-color: #f5f5f5;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
    transform: translateY(-2px);
}

.btn-large {
    background-color: #4CAF50;
    color: #fff;
    padding: 24px 48px;
    font-size: 20px;
    font-weight: 700;
    border-radius: 8px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 16px rgba(76, 175, 80, 0.3);
    transition: all 0.3s ease;
}

.btn-large:hover {
    background-color: #45a049;
    box-shadow: 0 8px 32px rgba(76, 175, 80, 0.4);
    transform: translateY(-2px);
}

.btn-subtitle {
    font-size: 16px;
    font-weight: 400;
}

/* ヒーローセクション */
.hero {
    margin-top: 62px;
    height: 438px;
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 50%, #81C784 100%);
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.hero-background {
    position: absolute;
    width: 100%;
    height: 100%;
}

.circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(255, 255, 255, 0.2);
}

.circle-1 {
    width: 250px;
    height: 250px;
    right: 200px;
    top: 30px;
}

.circle-2 {
    width: 200px;
    height: 200px;
    right: 50px;
    bottom: 30px;
}

.hero-container {
    max-width: 100%;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 100px;
    position: relative;
}

.hero-content {
    flex: 0 0 500px;
    z-index: 1;
}

.hero-impact {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
    background: rgba(255, 255, 255, 0.9);
    padding: 24px 32px;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(76, 175, 80, 0.2);
    backdrop-filter: blur(10px);
}

.impact-label {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.impact-number {
    font-size: 72px;
    font-weight: 900;
    color: #4CAF50;
    line-height: 1;
    display: flex;
    align-items: baseline;
    gap: 4px;
    text-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.counter {
    font-size: 72px;
    font-weight: 900;
}

.impact-unit {
    font-size: 48px;
    font-weight: 900;
}

.hero-title {
    font-size: 36px;
    font-weight: 900;
    color: #333;
    margin-bottom: 16px;
    line-height: 1.3;
    white-space: nowrap;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    font-size: 16px;
    color: #333;
    margin-bottom: 24px;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: 16px;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    z-index: 1;
}

.hero-image img {
    max-width: 1500px;
    width: 100%;
    transform: scale(1.5);
    transform-origin: center;
    filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.3));
}

/* NOVAとはセクション */
.about {
    padding: 80px 0;
    background: linear-gradient(180deg, #ffffff 0%, #f8f9fa 100%);
}

.about-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 80px;
    padding: 40px 60px;
    background: #fff;
    border-radius: 24px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

.about-image {
    flex: 0 0 375px;
}

.about-image img {
    width: 100%;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.15));
}

.about-content {
    flex: 1;
}

.section-title {
    font-size: 34px;
    font-weight: 700;
    margin-bottom: 32px;
    color: #333;
}

.about-text {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
}

/* NOVAの特徴 */
.features {
    padding: 80px 0;
    background: linear-gradient(180deg, #f5f5f5 0%, #e8f5e9 100%);
}

.features-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 60px;
}

.features .section-title {
    text-align: center;
    margin-bottom: 60px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.feature-card {
    background-color: #fff;
    border-radius: 50%;
    width: 340px;
    height: 340px;
    padding: 40px 35px 60px;
    text-align: center;
    position: relative;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(76, 175, 80, 0.25);
}

.feature-number {
    font-size: 36px;
    font-weight: 700;
    color: #4CAF50;
    margin-bottom: 12px;
    text-shadow: 0 2px 8px rgba(76, 175, 80, 0.3);
}

.feature-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    max-width: 100%;
    max-height: 100%;
    filter: drop-shadow(0 4px 12px rgba(76, 175, 80, 0.2));
}

.feature-text {
    font-size: 14px;
    line-height: 1.6;
    color: #333;
}

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

/* 機能詳細 */
.functions {
    padding: 80px 0;
    background: linear-gradient(180deg, #ffffff 0%, #f5f5f5 100%);
}

.functions-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 60px;
}

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

.functions-subtitle {
    font-size: 26px;
    font-weight: 500;
    color: #4CAF50;
    margin-bottom: 16px;
    text-shadow: 0 2px 4px rgba(76, 175, 80, 0.2);
}

.functions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.function-card {
    background: linear-gradient(135deg, #4CAF50 0%, #66BB6A 100%);
    color: #fff;
    padding: 32px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(76, 175, 80, 0.3);
    transition: all 0.3s ease;
}

.function-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(76, 175, 80, 0.4);
}

.function-icon {
    width: 99px;
    height: 66px;
    margin: 0 auto 20px;
}

.function-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}

.function-text {
    font-size: 15px;
    line-height: 1.6;
}

/* AI機能の活用方法 */
.ai-usage {
    padding: 80px 0;
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 50%, #A5D6A7 100%);
}

.ai-usage-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 60px;
}

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

.ai-header-icon {
    width: 212px;
    height: 141px;
    margin: 0 auto 24px;
    filter: drop-shadow(0 6px 20px rgba(76, 175, 80, 0.3));
}

.ai-steps {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.ai-step {
    display: flex;
    align-items: center;
    gap: 60px;
    justify-content: space-between;
}

.ai-step-left-type {
    flex-direction: row;
}

.ai-step-right-type {
    flex-direction: row;
}

.ai-step-group {
    flex: 0 0 280px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.ai-step-header {
    display: flex;
    align-items: center;
    gap: 15px;
}

.ai-step-number {
    font-size: 48px;
    font-weight: 700;
    color: #4CAF50;
    text-shadow: 0 4px 12px rgba(76, 175, 80, 0.4);
}

.ai-step-title {
    font-size: 32px;
    font-weight: 700;
    color: #333;
    white-space: nowrap;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.ai-step-image {
    width: 193px;
    height: 193px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-step-image img {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 8px 20px rgba(0, 0, 0, 0.2));
}

.ai-step-description {
    flex: 1;
    background-color: #fff;
    border-radius: 16px;
    padding: 30px 35px;
    max-width: 650px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    transition: all 0.3s ease;
}

.ai-step-description:hover {
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.18);
    transform: translateY(-2px);
}

.ai-step-description p {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin: 0;
}

/* 比較表 */
.comparison {
    padding: 80px 0;
    background: linear-gradient(180deg, #ffffff 0%, #f8f9fa 100%);
}

.comparison-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 60px;
}

.comparison-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
    align-items: flex-start;
}

.comparison-header-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.comparison-header-icon {
    width: 190px;
    height: auto;
    filter: drop-shadow(0 6px 16px rgba(0, 0, 0, 0.15));
}

.comparison-header .section-title {
    margin: 0;
    font-size: 33px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    white-space: nowrap;
}

.comparison-table {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 60px;
}

.comparison-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.comparison-item {
    background-color: #fff;
    padding: 24px;
    border-radius: 12px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.comparison-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.comparison-icon {
    font-size: 24px;
    font-weight: 700;
    flex-shrink: 0;
}

.comparison-old .comparison-icon {
    color: #d32f2f;
    text-shadow: 0 2px 4px rgba(211, 47, 47, 0.3);
}

.comparison-new .comparison-icon {
    color: #4CAF50;
    text-shadow: 0 2px 4px rgba(76, 175, 80, 0.3);
}

.comparison-content h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.comparison-content p {
    font-size: 15px;
    color: #666;
}

.comparison-result {
    text-align: center;
    margin-bottom: 40px;
}

.result-icon {
    width: 151px;
    height: auto;
    margin: 0 auto 20px;
}

.result-title {
    font-size: 50px;
    font-weight: 700;
    color: #4CAF50;
    text-shadow: 0 4px 12px rgba(76, 175, 80, 0.4);
    white-space: nowrap;
}

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

/* 料金プラン */
.pricing {
    padding: 80px 0;
    background: linear-gradient(180deg, #f5f5f5 0%, #e8f5e9 100%);
}

.pricing-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 60px;
}

.pricing-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    margin-bottom: 60px;
}

.pricing-campaign {
    background-color: #fff;
    padding: 20px 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.campaign-icon {
    width: 151px;
    height: auto;
}

.campaign-text {
    font-size: 20px;
    font-weight: 700;
}

.pricing-header .section-title {
    margin: 0;
    font-size: 31px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.pricing-campaign-badge {
    background: linear-gradient(135deg, #4CAF50 0%, #66BB6A 100%);
    color: #fff;
    padding: 16px 32px;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.3);
}

.campaign-badge-text {
    font-size: 20px;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.pricing-table {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.pricing-row {
    background-color: #fff;
    border-radius: 16px;
    padding: 32px;
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 40px;
    align-items: center;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.pricing-row:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(76, 175, 80, 0.2);
}

.pricing-label {
    font-size: 20px;
    font-weight: 700;
}

.pricing-value {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.price-old {
    font-size: 23px;
    color: #666;
    text-decoration: line-through;
}

.arrow {
    font-size: 32px;
    color: #4CAF50;
    font-weight: 700;
}

.price-new {
    font-size: 41px;
    font-weight: 700;
    color: #4CAF50;
}

.pricing-note {
    font-size: 14px;
    color: #666;
    width: 100%;
    margin-top: 8px;
}

/* FAQ */
.faq {
    padding: 80px 0;
    background: linear-gradient(135deg, #4CAF50 0%, #66BB6A 50%, #81C784 100%);
}

.faq-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 60px;
}

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

.faq-icon {
    width: 109px;
    height: auto;
    margin: 0 auto 24px;
    filter: drop-shadow(0 6px 16px rgba(0, 0, 0, 0.3));
}

.faq .section-title {
    color: #fff;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.faq-item {
    display: flex;
    gap: 20px;
}

.faq-question,
.faq-answer {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.faq-q,
.faq-a {
    background-color: #fff;
    color: #4CAF50;
    width: 50px;
    height: 50px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 25px;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.faq-question {
    flex: 0 0 calc(50% - 10px);
    background-color: #fff;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.faq-question:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.faq-question p {
    font-size: 18px;
    font-weight: 500;
    color: #333;
    padding-top: 12px;
}

.faq-answer {
    flex: 0 0 calc(50% - 10px);
    background-color: #fff;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.faq-answer:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.faq-answer p {
    font-size: 16px;
    line-height: 1.6;
    color: #666;
    padding-top: 12px;
}

/* フッター */
.footer {
    background: linear-gradient(135deg, #1B5E20 0%, #2E7D32 50%, #388E3C 100%);
    color: #fff;
    padding: 60px 0 40px;
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.2);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 60px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
}

.footer-logo-icon {
    width: 104px;
    height: 104px;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
}

.footer-logo-text {
    height: 48px;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-info {
    flex: 0 0 auto;
    max-width: 600px;
}

.footer-info p {
    font-size: 15px;
    margin-bottom: 4px;
    line-height: 1.8;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.footer-info p:first-child {
    font-weight: 500;
    margin-bottom: 12px;
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-links-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 15px;
    transition: all 0.3s ease;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.footer-links a:hover {
    opacity: 0.9;
    transform: translateX(4px);
    text-shadow: 0 2px 8px rgba(255, 255, 255, 0.3);
}

/* スムーススクロール */
html {
    scroll-behavior: smooth;
}

/* レスポンシブ対応 */

/* タブレット横（769px〜1024px） */
@media (max-width: 1024px) {
    .header-container,
    .features-container,
    .functions-container,
    .ai-usage-container,
    .comparison-container,
    .pricing-container,
    .faq-container,
    .footer-container {
        padding: 0 40px;
    }

    .feature-card {
        width: 280px;
        height: 280px;
        padding: 35px 30px 50px;
    }

    .feature-number {
        font-size: 32px;
        margin-bottom: 10px;
    }

    .feature-icon {
        width: 80px;
        height: 80px;
        margin: 0 auto 14px;
    }

    .feature-text {
        font-size: 13px;
        line-height: 1.5;
    }

    .functions-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-container {
        padding: 0 80px;
    }
}

/* タブレット縦/スマホ横（481px〜768px） */
@media (max-width: 768px) {
    .header-container {
        padding: 0 30px;
    }

    .header-logo-icon {
        width: 36px;
        height: 36px;
    }

    .header-logo-text {
        height: 20px;
    }

    .mobile-menu-btn {
        display: block;
        background: none;
        border: none;
        font-size: 28px;
        cursor: pointer;
        color: #333;
        padding: 8px;
        margin-left: auto;
    }

    .header-nav {
        display: none;
        position: absolute;
        top: 62px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        z-index: 999;
    }

    .header-nav.mobile-open {
        display: flex;
    }

    .header-nav .nav-link {
        padding: 12px 0;
        border-bottom: 1px solid #f0f0f0;
    }

    .header-nav .nav-link:last-child {
        border-bottom: none;
    }

    .header-cta {
        gap: 8px;
    }

    .header-cta .btn-outline {
        display: none;
    }

    .header-cta .btn-primary {
        padding: 8px 16px;
        font-size: 13px;
    }

    .hero {
        height: auto;
        padding: 40px 0;
    }

    .hero-container {
        flex-direction: column;
        padding: 0 30px;
    }

    .hero-content {
        flex: 1;
    }

    .hero-impact {
        padding: 20px 28px;
    }

    .impact-number {
        font-size: 56px;
    }

    .impact-label {
        font-size: 16px;
    }

    .hero-title {
        font-size: 28px;
        white-space: normal;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-cta {
        flex-direction: column;
        gap: 12px;
    }

    .hero-image img {
        transform: scale(1.3);
    }

    .about-container {
        flex-direction: column;
        gap: 40px;
    }

    .about-image {
        flex: 1;
    }

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

    .features-container,
    .functions-container,
    .ai-usage-container,
    .comparison-container,
    .pricing-container,
    .faq-container,
    .footer-container {
        padding: 0 30px;
    }

    .feature-card {
        width: 250px;
        height: 250px;
        padding: 30px 25px 45px;
    }

    .feature-number {
        font-size: 28px;
        margin-bottom: 8px;
    }

    .feature-icon {
        width: 70px;
        height: 70px;
        margin: 0 auto 12px;
    }

    .feature-text {
        font-size: 12px;
        line-height: 1.5;
    }

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

    .ai-step {
        flex-direction: column !important;
    }

    .ai-step-group {
        order: 1;
    }

    .ai-step-description {
        order: 2;
        max-width: 100%;
    }

    .ai-step-number {
        font-size: 36px;
    }

    .ai-step-title {
        font-size: 24px;
        white-space: normal;
    }

    .comparison-container {
        display: flex;
        flex-direction: column;
    }

    .comparison-header {
        display: contents;
    }

    .comparison-header-col:first-child {
        order: 1;
        margin-bottom: 30px;
    }

    .comparison-header-col:last-child {
        order: 3;
        margin-bottom: 30px;
    }

    .comparison-header .section-title {
        font-size: 24px;
        white-space: normal;
    }

    .comparison-header-icon {
        width: 120px;
    }

    .comparison-table {
        display: contents;
    }

    .comparison-row {
        display: contents;
    }

    .comparison-old {
        order: 2;
        margin-bottom: 20px;
    }

    .comparison-new {
        order: 4;
        margin-bottom: 20px;
    }

    .comparison-item {
        width: 100%;
    }

    .comparison-result {
        order: 5;
        margin-top: 40px;
    }

    .comparison-cta {
        order: 6;
    }

    .result-title {
        font-size: 32px;
        white-space: normal;
    }

    .pricing-header {
        flex-direction: column;
    }

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

    .faq-item {
        flex-direction: column;
    }

    .faq-question,
    .faq-answer {
        flex: 1;
    }

    .footer-logo-icon {
        width: 80px;
        height: 80px;
    }

    .footer-logo-text {
        height: 40px;
    }

    .footer-info p {
        font-size: 14px;
    }

    .footer-links a {
        font-size: 14px;
    }

    .footer-content {
        flex-direction: column;
        gap: 40px;
    }

    .footer-links {
        gap: 40px;
    }
}

/* スマホ縦（〜480px） */
@media (max-width: 480px) {
    .header-container,
    .features-container,
    .functions-container,
    .ai-usage-container,
    .comparison-container,
    .pricing-container,
    .faq-container,
    .footer-container {
        padding: 0 20px;
    }

    .header-logo-icon {
        width: 32px;
        height: 32px;
    }

    .header-logo-text {
        height: 18px;
    }

    .mobile-menu-btn {
        font-size: 24px;
    }

    .header-cta {
        display: none;
    }

    .hero-container {
        padding: 0 20px;
    }

    .hero-impact {
        padding: 16px 24px;
    }

    .impact-number {
        font-size: 48px;
    }

    .impact-label {
        font-size: 14px;
    }

    .hero-title {
        font-size: 24px;
    }

    .hero-subtitle {
        font-size: 14px;
    }

    .hero-image img {
        transform: scale(1.2);
    }

    .feature-card {
        width: 100%;
        max-width: 280px;
        height: auto;
        aspect-ratio: 1;
        padding: 25px 20px 40px;
    }

    .feature-number {
        font-size: 24px;
        margin-bottom: 6px;
    }

    .feature-icon {
        width: 60px;
        height: 60px;
        margin: 0 auto 10px;
    }

    .feature-text {
        font-size: 11px;
        line-height: 1.5;
    }

    .section-title {
        font-size: 28px;
    }

    .ai-step-number {
        font-size: 32px;
    }

    .ai-step-title {
        font-size: 20px;
    }

    .ai-step-description {
        padding: 24px 28px;
        font-size: 14px;
    }

    .comparison-header .section-title {
        font-size: 20px;
    }

    .comparison-header-icon {
        width: 100px;
    }

    .comparison-content h4 {
        font-size: 16px;
    }

    .comparison-content p {
        font-size: 13px;
    }

    .result-title {
        font-size: 28px;
        white-space: normal;
    }

    .btn-large {
        padding: 20px 36px;
        font-size: 18px;
    }

    .btn-subtitle {
        font-size: 14px;
    }

    .footer-logo-icon {
        width: 70px;
        height: 70px;
    }

    .footer-logo-text {
        height: 32px;
    }

    .footer-info p {
        font-size: 13px;
    }

    .footer-links {
        flex-direction: column;
        gap: 24px;
    }

    .footer-links a {
        font-size: 13px;
    }
}