:root {
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --accent-color: #4a5d4a; 
    --nordic-gray: #f7f7f5;
    --border-color: #eeeeee;
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}

/* ヘッダー */
header {
    padding: 0 5%;
    border-bottom: 1px solid var(--border-color);
    background-color: #ffffff;
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo-link {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 140px;
    width: auto;
    display: block;
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 3rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.1em;
}

.nav-cta {
    background-color: var(--text-color);
    color: #fff !important;
    padding: 0.7rem 1.8rem;
    transition: 0.3s;
}

/* ヒーローセクション（TOP用） */
.hero { 
    min-height: 85vh; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    background-color: var(--nordic-gray); 
    text-align: center; 
    padding: 10rem 5%;
}

.hero .content-wrapper {
    max-width: 1000px;
}

.hero h1.main-copy { 
    font-size: 4rem; 
    font-weight: 300;
    margin-bottom: 2.5rem;
    letter-spacing: 0.15em;
    line-height: 1.3;
}

.hero h1.main-copy b {
    font-weight: 700;
}

.hero .sub-copy {
    font-size: 1.3rem;
    font-weight: 500;
    margin-bottom: 3rem;
    color: var(--accent-color);
    letter-spacing: 0.05em;
}

.hero .description {
    font-size: 1.05rem;
    color: #444;
    margin-bottom: 4rem;
    line-height: 2.2;
    font-weight: 300;
}

.hero-btn-wrap {
    margin-bottom: 6rem;
}

/* 共通設定：COMPANY, SERVICE部分の上の余白を強化 */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 8rem 5% 10rem 5%; /* 上部の余白を8remに増やしました */
}

section {
    padding: 0; /* container側で余白を制御するため0に調整 */
}

h2.section-title {
    font-size: 1.6rem;
    font-weight: 500;
    text-align: center;
    margin-bottom: 5rem;
    letter-spacing: 0.4rem;
    position: relative;
}

h2.section-title::after {
    content: "";
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 1px;
    background: var(--text-color);
}

/* フッター */
footer {
    padding: 5rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    background-color: #ffffff;
    font-size: 0.75rem;
    color: #aaa;
}

.btn-primary {
    display: inline-block;
    background-color: var(--text-color);
    color: #fff;
    text-decoration: none;
    padding: 1.3rem 4rem;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    transition: 0.3s;
}

@media (max-width: 768px) {
    .logo-img { height: 90px; }
    .hero h1.main-copy { font-size: 2.2rem; }
    .container { padding: 5rem 5% 6rem 5%; }
}