/* ==========================================
   東建德株式会社 - ブランドカラー / Brand Colors
   ========================================== */
:root {
    /* ブランドカラー / Brand Colors */
    --indigo: #0B3D91;      /* 安定・信頼（インフラ） */
    --indigo-ink: #0a3175;
    --green: #00A870;       /* 再生可能エネルギー */
    --green-ink: #00895c;
    --green-light: #65F2C5;

    /* ニュートラルカラー / Neutral Colors */
    --graphite: #2B2B2B;    /* 本文色 */
    --silver: #ECEFF4;      /* カード背景 */
    --paper: #ffffff;
    --slate: #101317;       /* ダーク背景 */

    /* その他 / Others */
    --accent-color: var(--green);
    --dark-color: var(--slate);
    --light-color: var(--silver);
    --white: var(--paper);
    --text-dark: var(--graphite);
    --text-light: #666666;
    --border-color: #e0e0e0;

    /* シャドウとトランジション / Shadows & Transitions */
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 24px rgba(11, 61, 145, 0.15);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s ease;
}

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

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 4rem 0;
}

.section-title {
    font-size: 2.25rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--indigo);
    font-weight: 700;
    position: relative;
    letter-spacing: -0.02em;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 5px;
    background: linear-gradient(90deg, var(--indigo), var(--green));
    border-radius: 3px;
}

.section-description {
    text-align: center;
    font-size: 1.15rem;
    color: var(--text-light);
    margin: 1.5rem auto 3rem;
    max-width: 700px;
}

.lead-text {
    font-size: 1.2rem;
    line-height: 1.8;
    font-weight: 500;
    color: var(--indigo);
}

/* ==========================================
   ナビゲーション / Navigation
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    gap: 1.5rem;
}

.logo-link {
    display: flex !important;
    align-items: center;
    flex-direction: row;
    gap: 12px;
    text-decoration: none;
    transition: var(--transition-fast);
}

.logo-link:hover {
    transform: translateY(-2px);
}

.logo-img {
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
    max-width: 36px;
    max-height: 36px;
    display: block;
}

.logo-text {
    display: flex !important;
    flex-direction: column;
    line-height: 1.2;
    visibility: visible !important;
}

.logo-ja {
    font-size: 1rem;
    font-weight: 700;
    color: var(--indigo);
    display: block !important;
    visibility: visible !important;
}

.logo-en {
    font-size: 0.65rem;
    color: var(--text-light);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    display: block !important;
    visibility: visible !important;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--indigo);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--indigo), var(--green));
    transition: var(--transition);
}

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

.lang-toggle {
    background: linear-gradient(135deg, var(--indigo), var(--indigo-ink));
    color: var(--white);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.8rem;
    transition: var(--transition);
    letter-spacing: 0.05em;
}

.lang-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(11, 61, 145, 0.3);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 28px;
    height: 3px;
    background-color: var(--indigo);
    border-radius: 2px;
    transition: var(--transition);
}

/* ==========================================
   ヒーローセクション / Hero Section
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: linear-gradient(135deg, var(--indigo) 0%, #1a5299 50%, var(--indigo-ink) 100%);
    margin-top: 60px;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(0, 168, 112, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(101, 242, 197, 0.08) 0%, transparent 50%);
}

.hero-content {
    text-align: center;
    color: var(--white);
    z-index: 1;
    animation: fadeInUp 1s ease-out;
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 0;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    letter-spacing: 0.05em;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    font-weight: 300;
    opacity: 0.95;
    line-height: 1.8;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-stats {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    margin-top: 3rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
}

.stat-item {
    text-align: center;
    color: var(--white);
}

.stat-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* ==========================================
   ボタン / Buttons
   ========================================== */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    letter-spacing: 0.02em;
}

.btn-primary {
    background: linear-gradient(135deg, var(--green), var(--green-ink));
    color: var(--white);
    box-shadow: 0 4px 20px rgba(0, 168, 112, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 168, 112, 0.5);
}

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

.btn-secondary:hover {
    background: var(--white);
    color: var(--indigo);
    transform: translateY(-3px);
}

.btn-full {
    width: 100%;
}

/* ==========================================
   会社概要 / About Section
   ========================================== */
.about {
    background: linear-gradient(180deg, var(--white) 0%, var(--silver) 100%);
}

.about-intro {
    text-align: center;
    max-width: 900px;
    margin: 0 auto 4rem;
}

.about-intro p {
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.company-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.info-item {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    transition: var(--transition);
    border: 1px solid rgba(11, 61, 145, 0.05);
}

.info-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--green);
}

.info-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.info-item h3 {
    color: var(--indigo);
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.info-item p {
    color: var(--text-dark);
    font-size: 1rem;
    line-height: 1.6;
}

.sub-text {
    font-size: 0.9rem;
    color: var(--text-light);
    display: block;
    margin-top: 0.3rem;
}

/* ==========================================
   事業内容 / Business Section
   ========================================== */
.business {
    background: var(--white);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.business-card {
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    padding: 3rem 2.5rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.business-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--indigo), var(--green));
    transform: scaleX(0);
    transition: var(--transition);
}

.business-card:hover::before {
    transform: scaleX(1);
}

.business-card:hover {
    border-color: var(--indigo);
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.business-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.business-card h3 {
    color: var(--indigo);
    margin-bottom: 1.2rem;
    font-size: 1.5rem;
    font-weight: 700;
}

.business-card > p {
    color: var(--text-dark);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
    margin-top: 1.5rem;
    padding-left: 0;
}

.feature-list li {
    color: var(--text-light);
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
}

.feature-list li:last-child {
    border-bottom: none;
}

/* ==========================================
   蓄電所知識 / Knowledge Section
   ========================================== */
.knowledge {
    background: linear-gradient(180deg, var(--silver) 0%, var(--white) 100%);
}

.knowledge-block {
    background: var(--white);
    border-radius: 20px;
    padding: 3rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(11, 61, 145, 0.08);
}

.knowledge-title {
    font-size: 2rem;
    color: var(--indigo);
    margin-bottom: 2rem;
    font-weight: 700;
    position: relative;
    padding-left: 20px;
}

.knowledge-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 70%;
    background: linear-gradient(180deg, var(--indigo), var(--green));
    border-radius: 3px;
}

.knowledge-text p {
    font-size: 1.1rem;
    line-height: 1.9;
    color: var(--text-dark);
    margin-bottom: 2rem;
}

.power-mix {
    background: var(--silver);
    padding: 2rem;
    border-radius: 12px;
    margin-top: 2rem;
}

.power-mix h4 {
    color: var(--indigo);
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.mix-list {
    list-style: none;
    padding: 0;
}

.mix-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 1rem;
    font-weight: 500;
}

.mix-bar {
    height: 30px;
    background: var(--color);
    border-radius: 6px;
    width: var(--percentage);
    min-width: 100px;
    max-width: 400px;
    transition: var(--transition);
}

/* Pros and Cons Grid */
.pros-cons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin-top: 2rem;
}

.pros-card,
.cons-card {
    background: var(--silver);
    padding: 2.5rem;
    border-radius: 16px;
}

.pros-card {
    border-left: 5px solid var(--green);
}

.cons-card {
    border-left: 5px solid #ff6b6b;
}

.pros-card h4,
.cons-card h4 {
    color: var(--indigo);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.pros-card ul,
.cons-card ul {
    list-style: none;
    padding: 0;
}

.pros-card li,
.cons-card li {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.pros-card li:last-child,
.cons-card li:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.pros-card strong,
.cons-card strong {
    display: block;
    color: var(--indigo);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.pros-card p,
.cons-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

/* Highlight Block */
.highlight-block {
    background: linear-gradient(135deg, var(--indigo) 0%, var(--indigo-ink) 100%);
    color: var(--white);
}

.highlight-block .knowledge-title {
    color: var(--white);
}

.highlight-block .knowledge-title::before {
    background: var(--green-light);
}

.highlight-block .lead-text {
    color: var(--white);
    text-align: center;
    margin-bottom: 3rem;
}

.importance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.importance-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.importance-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.importance-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.importance-item h4 {
    color: var(--green-light);
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.importance-item p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ==========================================
   技術 / Technology Section
   ========================================== */
.technology {
    background: var(--white);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-bottom: 4rem;
}

.tech-card {
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem;
    transition: var(--transition);
}

.tech-card:hover {
    border-color: var(--green);
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.tech-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.tech-icon {
    font-size: 2.5rem;
}

.tech-card h3 {
    color: var(--indigo);
    font-size: 1.3rem;
    font-weight: 700;
}

.tech-card > p {
    color: var(--text-dark);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.tech-specs {
    list-style: none;
    padding: 1.5rem;
    background: var(--silver);
    border-radius: 12px;
    margin-top: 1.5rem;
}

.tech-specs li {
    color: var(--text-dark);
    padding: 0.6rem 0;
    font-size: 0.95rem;
    border-bottom: 1px solid rgba(11, 61, 145, 0.1);
}

.tech-specs li:last-child {
    border-bottom: none;
}

.tech-comparison {
    background: var(--silver);
    padding: 3rem;
    border-radius: 20px;
    margin-top: 3rem;
}

.tech-comparison h3 {
    color: var(--indigo);
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.tech-comparison > p {
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 1.05rem;
}

.comparison-table {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.comparison-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1.5fr;
    gap: 1.5rem;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
}

.comparison-row:last-child {
    border-bottom: none;
}

.comparison-row.header {
    background: var(--indigo);
    color: var(--white);
    font-weight: 700;
}

.comparison-row:not(.header):hover {
    background: var(--silver);
}

.comparison-row div {
    display: flex;
    align-items: center;
}

/* ==========================================
   お問い合わせ / Contact Section
   ========================================== */
.contact {
    background: linear-gradient(180deg, var(--silver) 0%, var(--white) 100%);
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    background: var(--white);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    border-left: 4px solid var(--green);
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-hover);
}

.contact-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.contact-item h3 {
    color: var(--indigo);
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.contact-item p {
    color: var(--text-dark);
    font-size: 1rem;
}

.contact-form {
    background: var(--white);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-card);
}

.form-group {
    margin-bottom: 1.8rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.6rem;
    color: var(--indigo);
    font-weight: 600;
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--indigo);
    box-shadow: 0 0 0 4px rgba(11, 61, 145, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

/* ==========================================
   フッター / Footer
   ========================================== */
.footer {
    background: linear-gradient(135deg, var(--slate) 0%, #1a1d23 100%);
    color: var(--light-color);
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    width: 40px !important;
    height: 40px !important;
    min-width: 40px;
    min-height: 40px;
    max-width: 40px;
    max-height: 40px;
    display: block;
}

.footer-brand h3 {
    color: var(--white);
    margin: 0;
    font-size: 1.25rem;
}

.footer-subtitle {
    color: var(--light-color);
    font-size: 0.9rem;
    margin: 0;
    opacity: 0.8;
}

.footer-text {
    color: var(--green-light);
    font-size: 0.9rem;
    margin: 0.5rem 0 0;
    font-weight: 500;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links h4 {
    color: var(--white);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.footer-links a {
    color: var(--light-color);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--green-light);
    padding-left: 8px;
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

/* ==========================================
   アニメーション / Animations
   ========================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* ==========================================
   レスポンシブデザイン / Responsive Design
   ========================================== */
@media (max-width: 1024px) {
    .section-title {
        font-size: 2.25rem;
    }

    .hero-title {
        font-size: 2.75rem;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 15px;
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background-color: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        padding: 2rem 1.5rem;
        gap: 1.5rem;
        transition: var(--transition);
        box-shadow: var(--shadow);
    }

    .nav-menu.active {
        left: 0;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .hero {
        min-height: auto;
        padding: 4rem 0 2rem;
    }

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

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .section-title {
        font-size: 1.9rem;
    }

    .section {
        padding: 3rem 0;
    }

    .knowledge-block,
    .tech-comparison {
        padding: 2rem 1.5rem;
    }

    .comparison-row {
        grid-template-columns: 1fr;
        gap: 0.8rem;
        padding: 1.2rem 1.5rem;
    }

    .comparison-row div {
        padding: 0.3rem 0;
    }

    .comparison-row.header {
        display: none;
    }

    .comparison-row:not(.header) div:before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--indigo);
        display: block;
        margin-bottom: 0.3rem;
        font-size: 0.85rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        align-items: center;
    }

    .footer-links a:hover {
        padding-left: 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .logo-ja {
        font-size: 1rem;
    }

    .logo-en {
        font-size: 0.7rem;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .btn {
        padding: 0.9rem 2rem;
        font-size: 0.95rem;
    }

    .contact-form {
        padding: 2rem 1.5rem;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .mobile-menu-toggle,
    .lang-toggle,
    .hero-buttons,
    .contact-form,
    .footer {
        display: none;
    }

    body {
        color: #000;
    }

    .section {
        page-break-inside: avoid;
    }
}