/* カラー・フォント変数 */
:root {
    --navy-primary: #1e3a8a;   /* 信頼のインディゴブルー */
    --orange-accent: #f97316;  /* 活力のオレンジ */
    --light-gray: #f8fafc;    /* 背景用グレー */
    --border-soft: #e2e8f0;    /* 境界線 */
    --text-dark: #1e293b;     /* 本文色 */
    --text-muted: #64748b;    /* 補足色 */
    --pure-white: #ffffff;
    --font-main: 'Noto Sans JP', sans-serif;
}

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

body {
    background-color: var(--pure-white);
    color: var(--text-dark);
    font-family: var(--font-main);
    line-height: 1.8;
    font-size: 18px;
}

/* ヘッダー */
header {
    height: 90px;
    background-color: var(--pure-white);
    display: flex;
    align-items: center;
    border-bottom: 4px solid var(--navy-primary);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--navy-primary);
    letter-spacing: -0.02em;
}

.logo span {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-left: 5px;
}

.main-nav ul {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 30px;
}

.main-nav a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 700;
    font-size: 0.95rem;
    transition: 0.3s;
}

.main-nav a:not(.nav-cta):hover {
    color: var(--navy-primary);
}

.nav-cta {
    background-color: var(--navy-primary);
    color: #fff !important;
    padding: 10px 25px;
    border-radius: 4px;
}

/* ヒーローセクション */
.hero-banner {
    background-color: var(--light-gray);
    padding: 60px 0;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    position: relative;
    padding: 0 40px;
}

.hero-visual {
    width: 65%;
    height: 550px;
    overflow: hidden;
    border-radius: 8px;
}

.hero-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-card {
    width: 45%;
    background-color: var(--pure-white);
    padding: 60px;
    position: absolute;
    right: 40px;
    box-shadow: 20px 20px 60px rgba(0,0,0,0.1);
    border-radius: 4px;
}

.tag {
    color: var(--orange-accent);
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: 20px;
}

.hero-card h1 {
    font-size: 2.8rem;
    line-height: 1.3;
    color: var(--navy-primary);
    margin-bottom: 25px;
}

.btn-primary {
    display: inline-block;
    background-color: var(--orange-accent);
    color: #fff;
    text-decoration: none;
    padding: 15px 40px;
    font-weight: 700;
    border-radius: 4px;
    margin-top: 30px;
    transition: 0.3s;
}

.btn-primary:hover {
    background-color: var(--navy-primary);
}

/* スタッツセクション */
.stats-section {
    padding: 100px 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.stat-item {
    text-align: center;
    padding: 40px;
    border: 1px solid var(--border-soft);
}

.stat-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.stat-item h3 {
    color: var(--navy-primary);
    margin-bottom: 15px;
    font-size: 1.4rem;
}

/* カテゴリセクション */
.category-section {
    padding-bottom: 120px;
}

.section-title {
    text-align: center;
    margin-bottom: 80px;
}

.section-title h2 {
    font-size: 2.2rem;
    color: var(--navy-primary);
    margin-bottom: 15px;
}

.banner-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.category-banner {
    display: flex;
    background-color: var(--light-gray);
    overflow: hidden;
    border-radius: 8px;
    align-items: center;
}

.category-banner.reverse {
    flex-direction: row-reverse;
}

.cat-img {
    flex: 1;
    height: 350px;
}

.cat-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cat-info {
    flex: 1.2;
    padding: 60px;
}

.cat-label {
    background-color: var(--navy-primary);
    color: #fff;
    font-size: 0.8rem;
    padding: 4px 12px;
    border-radius: 20px;
}

.cat-info h3 {
    font-size: 1.8rem;
    margin: 20px 0;
    color: var(--navy-primary);
}

/* フッター */
footer {
    background-color: #0f172a;
    color: var(--pure-white);
    padding: 80px 0 40px;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

.footer-logo {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-bottom {
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.copyright {
    font-size: 0.85rem;
    opacity: 0.6;
}

/* レスポンシブ */
@media (max-width: 1000px) {
    .hero-container {
        flex-direction: column;
    }
    .hero-visual, .hero-card {
        width: 100%;
        position: static;
    }
    .hero-card {
        margin-top: -50px;
        padding: 40px;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .category-banner, .category-banner.reverse {
        flex-direction: column;
    }
    .cat-img {
        width: 100%;
        height: 250px;
    }
}