:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #f97316;
    --text-color: #1f2937;
    --light-bg: #f9fafb;
    --white: #ffffff;
    --container-width: 1200px;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--light-bg);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1rem;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 5rem 0;
    text-align: center;
}

.hero-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 2rem;
}

.hero-text {
    flex: 1 1 300px;
    min-width: 280px;
}

.hero-text h1 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.hero-quote {
    font-size: 1.1rem;
    opacity: 0.9;
}

.hero-image {
    flex: 1 1 300px;
    min-width: 250px;
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

/* Intro Message */
.intro-message {
    background-color: var(--white);
    padding: 3rem 0;
    text-align: center;
}

.message-main {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.message-sub {
    font-size: 1.25rem;
    color: var(--text-color);
    opacity: 0.9;
}

/* Pain Points */
.pain-points {
    padding: 4rem 0;
    background-color: var(--white);
}

.pain-points-content {
    display: flex;
    align-items: center;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.pain-points-text {
    flex: 1;
}

.pain-points-image {
    flex: 1;
    text-align: center;
}

.pain-points-image img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.pain-points-list {
    list-style: none;
    margin-bottom: 2rem;
    display: grid;
    gap: 1rem;
}

.pain-points-list li {
    background-color: var(--light-bg);
    padding: 1rem 1.5rem;
    border-left: 5px solid var(--accent-color);
    box-shadow: var(--shadow);
    border-radius: 8px;
}

.solution-intro {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 2rem;
    line-height: 1.3;
    text-align: left;
    position: relative;
    padding-left: 1.5rem;
    border-left: 8px solid var(--accent-color);
}

/* Features */
.features {
    padding: 4rem 0;
}

.feature-card {
    background-color: var(--white);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow);
}

.feature-content-left,
.feature-content-right {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.feature-content-right {
    flex-direction: row-reverse;
}

.feature-text {
    flex: 1;
    text-align: left;
}

.feature-image {
    flex: 1;
    text-align: center;
}

.feature-image img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.feature-card h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-card ul {
    list-style: none;
    margin-top: 1rem;
}

.feature-card li {
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
}

.feature-card li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    text-align: left;
    margin-top: 1rem;
}

.comparison h3 {
    margin-bottom: 0.5rem;
}

/* Benefits */
.benefits {
    background-color: var(--light-bg);
    padding: 4rem 0;
}

.benefits h2 {
    text-align: center;
    margin-bottom: 2rem;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.benefits-grid-vertical {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    max-width: 800px;
    margin: 0 auto;
}

.benefit-item {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
}

/* CTA */
.cta {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 4rem 0;
    text-align: center;
}

.cta h2 {
    margin-bottom: 1rem;
}

.cta-button {
    background-color: var(--accent-color);
    color: var(--white);
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    display: inline-block;
    margin-top: 1.5rem;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-3px);
    background-color: #ea580c;
}

/* Footer */
footer {
    background-color: #1a365d;  /* 深いネイビー */
    color: var(--white);
    padding: 3rem 0;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--primary-color));
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.company-info {
    text-align: center;
}

.company-name {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.contact-info a {
    color: var(--white);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.contact-info a:hover {
    opacity: 0.8;
}

.copyright {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content {
        text-align: center;
    }

    .hero-text h1 {
        font-size: 2rem;
    }

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

    .pain-points-content {
        flex-direction: column;
    }

    .pain-points-text {
        text-align: center;
    }

    .feature-card li {
        text-align: left;
    }

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

    .feature-content-left,
    .feature-content-right {
        flex-direction: column;
    }

    .feature-text {
        text-align: center;
    }

    .footer-content {
        gap: 1.5rem;
    }

    .company-name {
        font-size: 1.3rem;
    }

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

.solution-message {
    font-size: 1.5rem;
    line-height: 1.4;
    margin-top: 3rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(30, 64, 175, 0.1));
    border-radius: 12px;
    text-align: center;
    position: relative;
}

.solution-message::before {
    content: "";
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
}

.solution-message::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
}

.solution-highlight {
    color: var(--accent-color);
    font-weight: bold;
}

.solution-accent {
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.7rem;
    display: inline-block;
    transform: translateY(2px);
    position: relative;
}

.solution-accent::after {
    content: "";
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--accent-color);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.solution-message:hover .solution-accent::after {
    transform: scaleX(1);
}