/* カラー・フォント変数 */
:root {
    --edo-murasaki: #4b2d52; /* 江戸紫（高貴な深紫） */
    --brass-gold: #a68b5e;   /* 真鍮色（アンティークな金） */
    --sumi-black: #1a1a1a;
    --paper-beige: #f5f2ed;  /* 落ち着いた和紙の白 */
    --white: #ffffff;
    --font-mincho: 'Shippori Mincho B1', serif;
    --font-serif: 'Noto Serif JP', serif;
}

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

body {
    background-color: var(--paper-beige);
    color: var(--sumi-black);
    font-family: var(--font-serif);
    line-height: 2.1;
    font-size: 18px;
    overflow-x: hidden;
}

/* 背景装飾 */
.bg-line {
    position: fixed;
    top: 0;
    left: 10%;
    width: 1px;
    height: 100%;
    background-color: rgba(166, 139, 94, 0.1);
    z-index: -1;
}

/* ヘッダー */
header {
    height: 100px;
    display: flex;
    align-items: center;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(245, 242, 237, 0.9);
    backdrop-filter: blur(10px);
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    padding: 0 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-mincho);
    font-size: 2rem;
    font-weight: 700;
    color: var(--edo-murasaki);
    letter-spacing: 0.1em;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 40px;
}

nav a {
    text-decoration: none;
    color: var(--sumi-black);
    font-weight: 600;
    font-size: 0.95rem;
    transition: 0.3s;
}

nav a:hover {
    color: var(--brass-gold);
}

/* ヒーロースプリット */
.hero-split {
    display: flex;
    height: 100vh;
    min-height: 700px;
}

.hero-left {
    flex: 1;
    background-color: var(--white);
    display: flex;
    align-items: center;
    padding: 0 10% 0 60px;
    position: relative;
}

.hero-right {
    flex: 1;
}

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

.em-title {
    font-family: var(--font-mincho);
    color: var(--brass-gold);
    letter-spacing: 0.4em;
    font-size: 0.8rem;
    display: block;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.hero-left h1 {
    font-family: var(--font-mincho);
    font-size: 3.8rem;
    line-height: 1.4;
    margin-bottom: 40px;
    color: var(--edo-murasaki);
}

.hero-left p {
    color: #555;
    font-size: 1.1rem;
    max-width: 500px;
}

.scroll-down {
    position: absolute;
    bottom: 50px;
    left: 60px;
    font-family: var(--font-mincho);
    font-size: 0.8rem;
    writing-mode: vertical-rl;
    letter-spacing: 0.2em;
}

.scroll-down::after {
    content: '';
    display: inline-block;
    width: 1px;
    height: 50px;
    background-color: var(--brass-gold);
    margin-top: 10px;
}

/* コンテンツブロック */
.section-block {
    padding: 150px 0;
}

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

.layered-content {
    display: flex;
    align-items: center;
    gap: 100px;
}

.content-image {
    flex: 1;
    position: relative;
}

.content-image img {
    width: 100%;
    box-shadow: 30px 30px 0 rgba(75, 45, 82, 0.05);
}

.content-text {
    flex: 1;
}

.label {
    color: var(--brass-gold);
    font-weight: 700;
    border-bottom: 2px solid var(--brass-gold);
    display: inline-block;
    margin-bottom: 20px;
}

.content-text h2 {
    font-family: var(--font-mincho);
    font-size: 2.8rem;
    line-height: 1.3;
    margin-bottom: 30px;
    color: var(--edo-murasaki);
}

.check-list {
    list-style: none;
    margin-top: 40px;
}

.check-list li {
    padding-left: 30px;
    position: relative;
    margin-bottom: 15px;
    font-weight: 600;
}

.check-list li::before {
    content: '†';
    position: absolute;
    left: 0;
    color: var(--brass-gold);
}

/* ダークアクセントセクション */
.dark-accent-section {
    background-color: var(--edo-murasaki);
    color: var(--white);
    padding: 120px 0;
    text-align: center;
}

.centered-message h2 {
    font-family: var(--font-mincho);
    font-size: 2.5rem;
    margin-bottom: 30px;
}

.centered-message p {
    max-width: 700px;
    margin: 0 auto;
    opacity: 0.9;
}

.deco-line {
    width: 60px;
    height: 2px;
    background-color: var(--brass-gold);
    margin: 50px auto 0;
}

/* フッター */
footer {
    padding: 100px 20px;
    background-color: var(--white);
    text-align: center;
    border-top: 1px solid var(--paper-beige);
}

.footer-logo {
    font-family: var(--font-mincho);
    font-size: 1.8rem;
    color: var(--edo-murasaki);
    margin-bottom: 20px;
}

.copyright {
    margin-top: 30px;
    font-size: 0.8rem;
    color: #999;
}

/* レスポンシブ */
@media (max-width: 1000px) {
    .hero-split {
        flex-direction: column;
        height: auto;
    }
    .hero-left {
        padding: 150px 40px 80px;
    }
    .hero-left h1 {
        font-size: 2.5rem;
    }
    .layered-content {
        flex-direction: column;
        gap: 60px;
        text-align: center;
    }
    .check-list {
        display: inline-block;
        text-align: left;
    }
}