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

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: #333;
    width: 1200px;
    margin: 0 auto;
    background: linear-gradient(180deg, #f8f9fa 0%, #e9ecef 100%);
    min-height: 100vh;
}

.container {
    width: 100%;
    padding: 0 20px;
}

/* Hero Section */
.hero {
    height: 100vh;
    background-image: url('../images/bk-01.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    position: relative;
    overflow: hidden;
}

.hero-content {
    background: rgba(255, 255, 255, 0.95);
    padding: 2.5rem 3rem;
    text-align: left;
    color: #000;
    z-index: 2;
    position: relative;
    max-width: 700px;
    animation: fadeInUp 1s ease-out;
}

.hero-main {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 0.5rem;
}

.hero-title {
    flex-shrink: 0;
}

.hero-title h1 {
    font-size: 2.8rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    margin: 0;
    color: #000;
    line-height: 1;
}

.hero-intro {
    flex: 1;
}

.hero-intro p {
    font-size: 1.2rem;
    color: #000;
    letter-spacing: 0.01em;
    line-height: 1.2;
    margin: 0.5rem 0 0 0;
}

.hero-subtitle {
    font-size: 0.9rem;
    color: #000;
    letter-spacing: 0.01em;
    line-height: 1.2;
    margin: 0;
}

/* Main Content */
.main-content {
    padding: 10px 0;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #000;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 320px;
    height: 1px;
    background: #000;
    margin: 0 auto;
    border-radius: 1px;
}

.strengths-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 0.1rem;
    color: white;
    position: relative;
    background-color: #172738;
    padding: 2.5rem 0 1.5rem 0;
    margin-left: -20px;
    margin-right: -20px;
}

/* Company Strengths */
.strengths {
    text-align: center;
    margin-bottom: 4rem;
}

.strength-image {
    display: block;
    width: calc(100% + 40px);
    height: auto;
    margin: 0 -20px 2rem -20px;
}

.strength-description {
    font-size: 1.1rem;
    line-height: 2;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

/* Business Domains Triangle */
.business-domains {
    margin: 5rem 0;
}

.triangle-container {
    position: relative;
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.triangle-image {
    display: block;
    width: 100%;
    max-width: 1000px;
    height: auto;
    margin: 0 auto;
}

/* Client List */
.client-list {
    margin: 4rem 0;
    text-align: center;
    animation: fadeInUp 0.8s ease-out 0.5s both;
}

.client-names {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem 2rem;
    font-size: 1rem;
    color: #333;
    text-align: left;
}

.client-item {
    padding: 0.5rem 0;
    line-height: 1.6;
    transition: color 0.2s ease;
}

.client-item:hover {
    color: #172738;
    font-weight: 500;
}

/* Contact Banner Pattern 2: #861e37 (赤系) */
.contact-banner-2 {
    background: linear-gradient(135deg, #861e37 0%, #6b1829 100%);
    text-align: center;
    padding: 3rem 0;
    animation: fadeInUp 0.8s ease-out 0.7s both;
}

.contact-button-2 {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    color: white;
    padding: 1.5rem 4rem;
    border: 2px solid white;
    border-radius: 50px;
    font-size: 1.3rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    letter-spacing: 0.02em;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.contact-button-2:hover {
    background: white;
    color: #861e37;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* Company Info */
.company-info {
    background-image: url('../images/company-bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    overflow: hidden;
    margin-top: 3rem;
    margin-left: 100px;
    margin-right: 100px;
    margin-bottom: 4rem;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.info-item {
    display: flex;
    border-bottom: 1px solid #dee2e6;
    background-color: rgba(255, 255, 255, 0.9);
}

.info-item:nth-child(odd) {
    background-color: rgba(233, 236, 239, 0.9);
}

.info-item:nth-child(even) {
    background-color: rgba(248, 249, 250, 0.9);
}

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

.info-label {
    font-weight: bold;
    width: 250px;
    padding: 1rem 4.5rem;
    flex-shrink: 0;
}

.info-value {
    padding: 1rem 1.5rem;
    flex: 1;
}

.info-value a {
    color: #1f517a;
    text-decoration: none;
}

.info-value a:hover {
    text-decoration: underline;
}

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

/* Responsive Design */
@media (max-width: 1240px) {
    body {
        width: 100%;
        max-width: 1200px;
    }
}

@media (max-width: 768px) {
    .hero-content {
        max-width: 90%;
        padding: 2rem;
    }

    .hero-main {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .hero-title h1 {
        font-size: 2.2rem;
        letter-spacing: 0.05em;
    }

    .hero-intro p {
        font-size: 0.9rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }

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

    .triangle-image {
        max-width: 100%;
        width: auto;
    }

    .client-names {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .contact-button-2 {
        padding: 1.2rem 3rem;
        font-size: 1.1rem;
    }

    .company-info {
        margin-left: 20px;
        margin-right: 20px;
    }

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

    .info-label {
        width: 100%;
        border-bottom: 1px solid #dee2e6;
    }

    .info-value {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .hero-content {
        padding: 1.5rem;
    }

    .hero-main {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .hero-title h1 {
        font-size: 1.8rem;
    }

    .hero-intro p {
        font-size: 0.85rem;
    }

    .hero-subtitle {
        font-size: 0.85rem;
    }

    .triangle-image {
        max-width: 100%;
        width: auto;
    }

    .client-names {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }

    .client-item {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .contact-banner-2 {
        padding: 2rem 0;
    }

    .contact-button-2 {
        padding: 1rem 2.5rem;
        font-size: 1rem;
    }

    .company-info {
        margin-left: 15px;
        margin-right: 15px;
    }
}