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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    line-height: 1.8;
    color: #1A2530;
    background-color: #ffffff;
    font-size: 16px;
}

a {
    color: #2c5282;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #1a365d;
}

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

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

/* ========================================
   ヘッダー
   ======================================== */
.header {
    background-color: #ffffff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 80px;
}

.logo a {
    color: #2c5282;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.logo-subtitle {
    font-size: 0.85rem;
    color: #666;
}

/* ナビゲーション */
.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-menu > li {
    position: relative;
}

.nav-menu > li > a {
    font-weight: 500;
    padding: 10px 0;
    display: inline-block;
    color: #32373c;
}

.nav-menu > li > a.active {
    color: #2c5282;
    border-bottom: 2px solid #2c5282;
}

.nav-menu > li > a:hover {
    color: #2c5282;
}

/* ドロップダウンメニュー */
.nav-item-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    list-style: none;
    min-width: 220px;
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.nav-item-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    display: block;
    padding: 12px 20px;
    color: #32373c;
    transition: background-color 0.3s ease;
}

.dropdown-menu a:hover {
    background-color: #f7fafc;
    color: #2c5282;
}

/* モバイルメニュートグル */
.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: #32373c;
    margin: 3px 0;
    transition: all 0.3s ease;
}

/* ========================================
   プロダクトバナー
   ======================================== */
.product-banner {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    padding: 12px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.product-banner-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    gap: 15px;
    justify-content: flex-start;
    align-items: center;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Firefox */
}

.product-banner-container::-webkit-scrollbar {
    display: none; /* Chrome, Safari */
}

.product-banner-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 25px;
    color: #2c5282;
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
    transition: all 0.3s ease;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    flex-shrink: 0;
}

.product-banner-item:hover {
    background-color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    color: #1a365d;
}

.product-banner-icon {
    font-size: 1.2rem;
    line-height: 1;
}

.product-banner-text {
    line-height: 1;
}

/* スマホ対応 */
@media (max-width: 768px) {
    .product-banner {
        padding: 10px 0;
    }

    .product-banner-container {
        justify-content: flex-start;
        gap: 10px;
        padding: 0 15px;
    }

    .product-banner-item {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .product-banner-icon {
        font-size: 1.1rem;
    }
}

/* ========================================
   ヒーローセクション（ヒロケイ風レイアウト）
   ======================================== */
.hero-impact {
    background: #ffffff url('../images/hero-waves-bg.svg') center center / cover no-repeat;
    padding: 80px 60px 140px;
    min-height: 600px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 左側：小さめのメッセージ */
.hero-left {
    position: absolute;
    left: 80px;
    top: 35%;
}

.hero-small-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: #94a3b8;
    margin-bottom: 30px;
    line-height: 1.6;
    letter-spacing: 0.05em;
}

/* 中央：超大メインメッセージ */
.hero-center {
    text-align: center;
    z-index: 10;
}

.hero-main-text {
    font-size: 5rem;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: 0.02em;
}

.hero-main-text {
    background: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 30%, #7dd3fc 60%, #86efac 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-particle {
    font-size: 2.5rem;
    color: #0ea5e9;
    font-weight: 600;
}

/* 右側：薄いフェードメッセージ */
.hero-right {
    position: absolute;
    right: 80px;
    top: 28%;
}

.hero-fade-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: #cbd5e1;
    margin-bottom: 25px;
    line-height: 1.5;
    letter-spacing: 0.05em;
}

/* ピカピカアニメーション */
.sparkle {
    animation: sparkle 2.5s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% {
        opacity: 1;
        filter: brightness(1);
    }
    50% {
        opacity: 0.9;
        filter: brightness(1.2);
    }
}

/* ロゴ */
.hero-logo {
    position: absolute;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    max-width: 360px;
    opacity: 0.85;
}

.hero-logo img {
    width: 100%;
    height: auto;
}

/* ボタン */
.btn {
    display: inline-block;
    padding: 15px 35px;
    border-radius: 5px;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: #0ea5e9;
    color: #ffffff;
}

.btn-primary:hover {
    background-color: #0284c7;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: #0ea5e9;
    border-color: #0ea5e9;
}

.btn-secondary:hover {
    background-color: #f0f9ff;
    transform: translateY(-2px);
}

/* ========================================
   特徴セクション
   ======================================== */
.features {
    padding: 60px 20px;
    background-color: #ffffff;
}

.section-title {
    text-align: center;
    font-size: 2.25rem;
    font-weight: 700;
    color: #2C3E50;
    margin-bottom: 40px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: #2980B9;
    margin: 20px auto 0;
    border-radius: 2px;
}

/* 円形カードスタイル（ヒロケイ風） */
.circle-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.circle-card {
    aspect-ratio: 1 / 1;
    border: 2px solid #e0b3ff;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 40px;
    text-align: center;
    transition: all 0.3s ease;
    background-color: rgba(255, 255, 255, 0.8);
}

.circle-card:hover {
    transform: scale(1.05);
    border-color: #c084fc;
    box-shadow: 0 10px 30px rgba(192, 132, 252, 0.2);
}

.circle-card-description {
    font-size: 0.95rem;
    color: #64748b;
    line-height: 1.7;
    margin-bottom: 20px;
    font-weight: 400;
}

.circle-card-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: #1e293b;
    line-height: 1.5;
}

/* ========================================
   ローコード開発やめましたセクション
   ======================================== */
.lowcode-story {
    padding: 60px 20px;
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
}

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

.lowcode-text h3 {
    font-size: 2rem;
    color: #92400e;
    margin-bottom: 20px;
    font-weight: 700;
}

.lowcode-text h4 {
    font-size: 1.5rem;
    color: #b45309;
    margin-top: 30px;
    margin-bottom: 15px;
    font-weight: 600;
}

.lowcode-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #451a03;
    margin-bottom: 20px;
}

.lowcode-reasons {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.lowcode-reasons li {
    padding: 12px 0 12px 30px;
    position: relative;
    font-size: 1.05rem;
    color: #78350f;
    line-height: 1.6;
}

.lowcode-reasons li:before {
    content: "✗";
    position: absolute;
    left: 0;
    color: #dc2626;
    font-weight: 700;
    font-size: 1.3rem;
}

.lowcode-cta {
    margin-top: 40px;
    text-align: center;
}

.lowcode-cta .btn {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    color: #ffffff;
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(220, 38, 38, 0.3);
    transition: all 0.3s ease;
}

.lowcode-cta .btn:hover {
    background: linear-gradient(135deg, #b91c1c 0%, #991b1b 100%);
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.4);
    transform: translateY(-2px);
}

/* ========================================
   サービスセクション
   ======================================== */
.services {
    padding: 60px 20px;
    background-color: #ffffff;
}

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

.service-card {
    background-color: #ffffff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    display: block;
    color: inherit;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.service-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.service-image svg {
    width: 100%;
    height: 100%;
    display: block;
}

.service-icon {
    width: 100%;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.service-card:hover .service-icon {
    transform: scale(1.05);
}

.service-icon svg {
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.service-content {
    padding: 30px;
}

.service-content h3 {
    font-size: 1.5rem;
    color: #2c5282;
    margin-bottom: 15px;
    font-weight: 700;
}

.service-content p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
}

.service-link {
    color: #0ea5e9;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
}

.service-card:hover .service-link {
    color: #0284c7;
}

/* ========================================
   ニュースセクション
   ======================================== */
.news {
    padding: 60px 20px;
    background-color: #f7fafc;
}

.news-list {
    max-width: 900px;
    margin: 0 auto;
}

.news-item {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    gap: 30px;
    align-items: flex-start;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.news-item:hover {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.news-date {
    font-size: 0.95rem;
    color: #666;
    font-weight: 500;
    min-width: 120px;
}

.news-content {
    flex: 1;
}

.news-category {
    display: inline-block;
    background-color: #667eea;
    color: #ffffff;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    margin-bottom: 10px;
}

.news-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.news-content h3 a {
    color: #32373c;
}

.news-content h3 a:hover {
    color: #2c5282;
}

/* ========================================
   CTAセクション
   ======================================== */
.cta {
    padding: 60px 20px;
    background-color: #1A2530;
    color: #ffffff;
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta-description {
    font-size: 1.125rem;
    margin-bottom: 50px;
    opacity: 0.95;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.contact-item {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 40px 30px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

.contact-item h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.contact-detail {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.contact-detail a {
    color: #ffffff;
}

.contact-note {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* ========================================
   ページヘッダー（サブページ用）
   ======================================== */
.page-header {
    background: #ffffff url('../images/flowing-lines-bg.svg') center center / cover no-repeat;
    color: #0c4a6e;
    padding: 60px 20px;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 1.125rem;
    opacity: 0.85;
}

/* ========================================
   フッター
   ======================================== */
.footer {
    background-color: #1A2530;
    color: #e0f2fe;
    padding: 60px 20px 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: #ffffff;
    font-weight: 700;
}

.footer-column h4 {
    font-size: 1.125rem;
    margin-bottom: 15px;
    color: #ffffff;
    font-weight: 600;
}

.footer-column p {
    margin-bottom: 10px;
    line-height: 1.8;
}

.footer-address {
    margin-top: 15px;
}

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

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column a {
    color: #e2e8f0;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: #ffffff;
}

.footer-bottom {
    border-top: 1px solid #4a5568;
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    margin-bottom: 10px;
    color: #cbd5e0;
}

.footer-note {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* ========================================
   レスポンシブデザイン
   ======================================== */
@media (max-width: 768px) {
    .header-container {
        flex-wrap: wrap;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 0;
        padding: 20px 0;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu > li {
        width: 100%;
    }

    .nav-menu > li > a {
        display: block;
        padding: 15px 0;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding: 0 0 0 20px;
    }

    .hero-impact {
        padding: 60px 20px 120px;
        min-height: 550px;
        flex-direction: column;
    }

    .hero-left {
        position: static;
        text-align: center;
        margin-bottom: 30px;
    }

    .hero-small-text {
        font-size: 1rem;
        margin-bottom: 15px;
    }

    .hero-center {
        margin-bottom: 30px;
    }

    .hero-main-text {
        font-size: 2.5rem;
    }

    .hero-particle {
        font-size: 1.5rem;
    }

    .hero-right {
        position: static;
        text-align: center;
    }

    .hero-fade-text {
        font-size: 1rem;
        margin-bottom: 15px;
    }

    .hero-logo {
        max-width: 260px;
        bottom: 40px;
    }

    .section-title {
        font-size: 1.875rem;
    }

    .features,
    .services,
    .news,
    .cta {
        padding: 60px 20px;
    }

    .news-item {
        flex-direction: column;
        gap: 15px;
    }

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

    .circle-cards {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        gap: 30px;
    }

    .circle-card {
        padding: 40px 30px;
    }

    .circle-card-description {
        font-size: 0.85rem;
        margin-bottom: 15px;
    }

    .circle-card-title {
        font-size: 1.15rem;
    }
}

@media (max-width: 480px) {
    .hero-small-text {
        font-size: 0.9rem;
    }

    .hero-main-text {
        font-size: 2rem;
    }

    .hero-particle {
        font-size: 1.2rem;
    }

    .hero-fade-text {
        font-size: 0.85rem;
    }

    .hero-logo {
        max-width: 200px;
        bottom: 30px;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .circle-cards {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .circle-card {
        padding: 35px 25px;
    }

    .circle-card-description {
        font-size: 0.8rem;
    }

    .circle-card-title {
        font-size: 1.05rem;
    }

    .btn {
        padding: 12px 25px;
        font-size: 0.95rem;
    }
}

/* ========================================
   実績セクション
   ======================================== */
.achievements {
    padding: 60px 20px;
    background-color: #f0f9ff;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.achievement-card {
    background-color: #ffffff;
    padding: 40px 20px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.achievement-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.achievement-number {
    font-size: 3rem;
    font-weight: 700;
    color: #0ea5e9;
    margin-bottom: 10px;
}

.achievement-label {
    color: #4a5568;
    font-size: 0.95rem;
    font-weight: 500;
}

/* ========================================
   ショーケースプロジェクトセクション
   ======================================== */
.showcase-project {
    padding: 60px 20px;
    background-color: #ffffff;
}

.showcase-content {
    display: flex;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.showcase-text {
    flex: 1;
}

.showcase-text h3 {
    font-size: 2rem;
    color: #0c4a6e;
    margin-bottom: 20px;
    font-weight: 700;
}

.showcase-text h4 {
    font-size: 1.25rem;
    color: #0c4a6e;
    margin: 30px 0 15px;
    font-weight: 600;
}

.showcase-text p {
    line-height: 1.9;
    color: #4a5568;
    margin-bottom: 20px;
}

.showcase-features {
    list-style: none;
    margin: 20px 0 30px;
}

.showcase-features li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: #4a5568;
}

.showcase-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #48bb78;
    font-weight: 700;
}

.productivity-comparison {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin: 30px 0;
    padding: 30px;
    background-color: #f7fafc;
    border-radius: 8px;
}

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

.comparison-label {
    display: block;
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 8px;
}

.comparison-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: #4a5568;
}

.comparison-item.highlight {
    background-color: #0ea5e9;
    color: #ffffff;
    padding: 20px;
    border-radius: 8px;
}

.comparison-item.highlight .comparison-label,
.comparison-item.highlight .comparison-value {
    color: #ffffff;
}

.highlight-value {
    font-size: 2rem;
}

.comparison-arrow {
    font-size: 2rem;
    color: #0ea5e9;
    font-weight: 700;
}

.showcase-image {
    flex: 1;
    max-width: 500px;
}

.showcase-image svg {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .achievement-number {
        font-size: 2rem;
    }

    .showcase-content {
        flex-direction: column;
    }

    .showcase-text h3 {
        font-size: 1.5rem;
    }

    .productivity-comparison {
        flex-direction: column;
        gap: 15px;
    }

    .comparison-arrow {
        transform: rotate(90deg);
    }
}

@media (max-width: 480px) {
    .achievements-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   タイムライン比較セクション
   ======================================== */
.timeline-comparison {
    padding: 60px 20px;
    background-color: #f8fafc;
}

/* ========================================
   成功の方程式セクション
   ======================================== */
.success-formula {
    padding: 60px 20px;
    background-color: #f7fafc;
}

/* ========================================
   リスク警告セクション
   ======================================== */
.risk-warning {
    padding: 60px 20px;
    background-color: #ffffff;
}

/* ========================================
   レスポンシブ対応（2カラムレイアウト）
   ======================================== */
@media (max-width: 768px) {
    /* 実績 + 生成AI開発スピードを縦並びに */
    .achievements .container > div[style*="grid-template-columns: 1fr 1fr"] {
        grid-template-columns: 1fr !important;
        gap: 30px !important;
    }

    /* 成功の方程式 + リスク警告を縦並びに */
    .success-formula .container > div[style*="grid-template-columns: 1fr 1fr"] {
        grid-template-columns: 1fr !important;
        gap: 30px !important;
    }

    /* 選ばれる理由を縦並びに */
    .features .container > div[style*="grid-template-columns: repeat(3, 1fr)"] {
        grid-template-columns: 1fr !important;
        gap: 15px !important;
    }

    /* タイムライン比較の成果サマリーを縦並びに */
    .timeline-comparison div[style*="grid-template-columns: repeat(3, 1fr)"] {
        grid-template-columns: 1fr !important;
        gap: 15px !important;
    }

    /* SVGテキストサイズ調整 */
    .timeline-comparison svg text {
        font-size: 12px !important;
    }

    /* セクションタイトルのフォントサイズ調整 */
    .section-title {
        font-size: 1.75rem !important;
    }

    /* 実績カードのフォントサイズ調整 */
    .achievement-number {
        font-size: 2rem !important;
    }
}