:root {
    --primary: #1a3a5f;
    /* Deep Trust Blue */
    --primary-light: #2c5282;
    --secondary: #38b2ac;
    /* Clean Medical Teal */
    --accent: #ed8936;
    /* Warning/Action Orange (subtle) */
    --background: #ffffff;
    --bg-light: #f7fafc;
    --bg-gradient: linear-gradient(135deg, #ebf8ff 0%, #ffffff 100%);
    --text-dark: #2d3748;
    --text-light: #4a5568;
    --white: #ffffff;
    --glass: rgba(255, 255, 255, 0.95);
    --shadow-soft: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --border-radius: 16px;
    --font-main: 'Inter', 'Noto Sans JP', sans-serif;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--text-dark);
    line-height: 1.8;
    background-color: var(--background);
    overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4 {
    font-weight: 700;
    color: var(--primary);
    line-height: 1.3;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 700;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
    background-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--white);
}

.keep-phrase {
    display: inline-block;
}

/* Layout */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: 100px 0;
}

/* Header */
header {
    background: var(--glass);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 16px 0;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

/* Hero */
.hero {
    position: relative;
    padding: 120px 0;
    background: var(--bg-gradient);
    text-align: center;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 24px;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto 40px;
}

/* Comparison Section */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.vaccine-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: var(--shadow-md);
    border-top: 6px solid var(--primary);
    display: flex;
    flex-direction: column;
}

.vaccine-card.shingrix {
    border-top-color: var(--primary);
}

.vaccine-card.varicella {
    border-top-color: var(--secondary);
}

.vaccine-card h3 {
    font-size: 1.75rem;
    margin-bottom: 8px;
}

.vaccine-type {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 500;
    margin-bottom: 24px;
}

.vaccine-feature {
    margin-bottom: 30px;
}

.feature-pill {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.shingrix .feature-pill {
    background: #ebf8ff;
    color: var(--primary-light);
}

.varicella .feature-pill {
    background: #e6fffa;
    color: var(--secondary);
}

.stat-item {
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--text-light);
    font-weight: 400;
}

.stat-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
}

.shingrix .stat-value {
    color: var(--primary);
}

.varicella .stat-value {
    color: var(--secondary);
}

/* Side Effects Section */
.details-section {
    background: var(--bg-light);
}


/* Recommendation Section */
.recommend-section {
    text-align: center;
}

.recommend-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.recommend-box {
    padding: 40px;
    border-radius: var(--border-radius);
    text-align: left;
    transition: var(--transition);
}

.recommend-box h4 {
    margin-bottom: 16px;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.box-shingrix {
    background: #ebf8ff;
    border-left: 5px solid var(--primary);
}

.box-varicella {
    background: #e6fffa;
    border-left: 5px solid var(--secondary);
}

/* Footer (styled as requested) */
footer {
    background: #fdfdfd;
    padding: 60px 0 40px;
    border-top: 1px solid #edf2f7;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.clinic-info h4 {
    font-size: 1.4rem;
    margin-bottom: 16px;
}

.access-map img {
    width: 100%;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.footer-bottom {
    margin-top: 60px;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-light);
    border-top: 1px solid #edf2f7;
    padding-top: 30px;
}

/* Mobile Adjustments */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    section {
        padding: 60px 0;
    }

    h1 {
        font-size: 1.7rem;
    }

    .hero p {
        font-size: 1rem;
        padding: 0 10px;
    }

    .vaccine-card {
        padding: 30px 20px;
    }

    .recommend-box {
        padding: 24px;
    }

    .recommend-box h4 {
        font-size: 1.1rem;
    }

    .stat-value {
        font-size: 1rem;
    }


    .clinic-info h4 {
        font-size: 1.2rem;
    }
}

/* Utility */
.text-center {
    text-align: center;
}

.mb-20 {
    margin-bottom: 20px;
}

.mb-40 {
    margin-bottom: 40px;
}

/* Recommendation Highlight Box */
.recommend-highlight-box {
    border: 3px solid #e53e3e;
    background-color: #ffffff;
    padding: 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    margin: 20px auto 40px;
    max-width: 90%;
}

@media (max-width: 768px) {
    .recommend-highlight-box {
        padding: 20px 16px;
        max-width: 100%;
    }
}