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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
    line-height: 1.8;
    color: #1a202c;
    background: #f8f9fa;
}

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

/* ヒーローセクション */
.hero {
    background: linear-gradient(to bottom, #e8eef5 0%, #f0f4f8 100%);
    padding: 4rem 0;
    min-height: 400px;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    padding: 2rem 0;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.3;
    background: linear-gradient(to right, #2563eb, #0891b2);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

@media (min-width: 640px) {
    .hero-title {
        font-size: 3rem;
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 3.75rem;
    }
}

.hero-subtitle {
    font-size: 1rem;
    color: #4b5563;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #2563eb;
    color: white;
    padding: 0.875rem 1.75rem;
    border-radius: 9999px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #2563eb;
    color: white;
    padding: 0.875rem 2rem;
    border-radius: 9999px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-secondary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

/* KV画像 */
.hero-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.kv-img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: none;
}

/* YouTubeチャンネルセクション */
.channel {
    background: white;
    padding: 5rem 0;
}

.channel h2 {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 1rem;
}

.channel-description {
    text-align: center;
    color: #6b7280;
    margin-bottom: 3.5rem;
    font-size: 1rem;
    line-height: 1.8;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
}

.feature-icon.blue {
    background: #dbeafe;
    color: #2563eb;
}

.feature-icon.green {
    background: #d1fae5;
    color: #059669;
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: #6b7280;
    font-size: 0.95rem;
    line-height: 1.6;
}

.cta-center {
    text-align: center;
    margin-top: 3rem;
}

/* 私の想いセクション */
.philosophy {
    background: #f8f9fa;
    padding: 5rem 0;
}

.philosophy h2 {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 3rem;
}

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

.philosophy-text {
    font-size: 1.05rem;
    color: #4b5563;
    line-height: 2;
    margin-bottom: 2rem;
}

.philosophy-text.highlight {
    font-size: 1.15rem;
    color: #1a202c;
    font-weight: 500;
    margin-top: 2.5rem;
}

/* 会社概要セクション */
.company {
    background: white;
    padding: 5rem 0;
}

.company h2 {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 3rem;
}

.company-grid {
    max-width: 900px;
    margin: 0 auto;
}

.company-info {
    background: white;
    border-radius: 12px;
}

.company-item {
    display: grid;
    grid-template-columns: 140px 1fr;
    padding: 1.5rem 0;
    border-bottom: 1px solid #e5e7eb;
    gap: 2rem;
}

.company-item:last-child {
    border-bottom: none;
}

.company-label {
    font-weight: 600;
    color: #6b7280;
    font-size: 0.9rem;
}

.company-value {
    color: #1a202c;
    line-height: 1.8;
}

.english-text {
    color: #6b7280;
    font-size: 0.9rem;
    display: block;
    margin-top: 0.25rem;
}

/* フッター */
footer {
    background: #1a202c;
    color: white;
    text-align: center;
    padding: 2rem 0;
}

footer p {
    opacity: 0.8;
    font-size: 0.9rem;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

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

    .company-item {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .company-label {
        font-size: 0.85rem;
    }

    .channel h2,
    .philosophy h2,
    .company h2 {
        font-size: 1.75rem;
    }
}
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.hero p {
    font-size: 1.3rem;
    position: relative;
    z-index: 1;
    opacity: 0.95;
}

/* セクション共通スタイル */
section {
    padding: 5rem 0;
}

section h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2d3748;
    position: relative;
    padding-bottom: 1rem;
}

/* 会社概要 */
.about {
    background-color: white;
}

.info-table {
    width: 100%;
    max-width: 800px;
    border-collapse: collapse;
    background-color: white;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    border-radius: 12px;
    overflow: hidden;
}

.info-table th,
.info-table td {
    padding: 1.5rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.info-table th {
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
    font-weight: 600;
    width: 200px;
    color: #4a5568;
}

.info-table td {
    color: #2d3748;
}

.info-table tr:last-child th,
.info-table tr:last-child td {
    border-bottom: none;
}

.info-table tr {
    transition: background-color 0.3s ease;
}

.info-table tr:hover {
    background-color: #f7fafc;
}

/* 事業内容 */
.business {
    background: white;
}

.business-list {
    list-style: none;
    max-width: 800px;
}

.business-list li {
    padding: 1.5rem 1.5rem 1.5rem 2rem;
    margin-bottom: 1.5rem;
    background-color: white;
    border-left: 5px solid transparent;
    border-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-image-slice: 1;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    border-radius: 0 8px 8px 0;
    transition: all 0.3s ease;
    position: relative;
}

.business-list li::before {
    content: '✓';
    position: absolute;
    left: 0.8rem;
    top: 50%;
    transform: translateY(-50%);
    color: #667eea;
    font-weight: bold;
    font-size: 1.2rem;
}

.business-list li:hover {
    transform: translateX(10px);
    box-shadow: 0 6px 25px rgba(102, 126, 234, 0.15);
}

/* お問い合わせ */
.contact {
    background-color: white;
}

.contact-info {
    max-width: 800px;
    padding: 3rem;
    background: linear-gradient(135deg, #ffffff 0%, #f7fafc 100%);
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    border-radius: 16px;
    border: 1px solid #e2e8f0;
}

.contact-info p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
}

.contact-info strong {
    color: #667eea;
    min-width: 120px;
}

/* フッター */
footer {
    background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
    color: white;
    text-align: center;
    padding: 2.5rem 0;
    margin-top: 5rem;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
}

footer p {
    opacity: 0.9;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.5rem;
    }

    nav ul {
        flex-direction: column;
        gap: 0.8rem;
    }

    .hero h2 {
        font-size: 2rem;
    }

    .hero {
        padding: 4rem 0;
    }

    section h2 {
        font-size: 1.8rem;
    }

    section {
        padding: 3rem 0;
    }

    .info-table th,
    .info-table td {
        display: block;
        width: 100%;
    }

    .info-table th {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
        border-radius: 8px 8px 0 0;
    }

    .business-list li {
        padding-left: 2.5rem;
    }

    .contact-info {
        padding: 2rem;
    }
}