/* デザイン変数 */
:root {
    --tokiwa-green: #072a24; /* 常磐色（深いグリーン） */
    --gold-leaf: #af9250;    /* 金箔のようなゴールド */
    --silk-white: #fcfcf9;   /* シルクのような白 */
    --deep-gray: #333333;
    --font-mincho: 'Shippori Mincho', serif;
    --font-serif: 'Noto Serif JP', serif;
}

/* 基本設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--silk-white);
    color: var(--deep-gray);
    font-family: var(--font-serif);
    line-height: 2;
    font-size: 18px;
}

/* ヘッダー */
header {
    height: 110px;
    background-color: rgba(252, 252, 249, 0.95);
    display: flex;
    align-items: center;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(7, 42, 36, 0.1);
}

.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: 2.2rem;
    font-weight: 700;
    color: var(--tokiwa-green);
    letter-spacing: 0.2em;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 50px;
}

nav a {
    text-decoration: none;
    color: var(--tokiwa-green);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    transition: 0.3s;
}

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

/* ヒーローセクション：マガジン風の重なり */
.hero {
    position: relative;
    padding-top: 110px;
    height: 100vh;
    display: flex;
    align-items: center;
}

.hero-image {
    position: absolute;
    right: 0;
    top: 150px;
    width: 65%;
    height: 75vh;
    z-index: 1;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.9) contrast(1.1);
}

.hero-floating-box {
    position: relative;
    z-index: 2;
    background-color: var(--tokiwa-green);
    color: var(--silk-white);
    padding: 80px;
    max-width: 650px;
    margin-left: 100px;
    box-shadow: 30px 30px 0 var(--gold-leaf);
}

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

.hero-floating-box h1 {
    font-family: var(--font-mincho);
    font-size: 3.8rem;
    line-height: 1.3;
    margin-bottom: 30px;
}

.hero-floating-box p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* フィロソフィー：分割レイアウト */
.philosophy {
    padding: 150px 0;
    background-color: var(--silk-white);
}

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

.magazine-layout {
    display: flex;
    align-items: center;
    gap: 100px;
}

.m-text {
    flex: 1;
}

.section-num {
    font-family: var(--font-mincho);
    font-size: 3rem;
    color: var(--gold-leaf);
    opacity: 0.3;
    line-height: 1;
}

.m-text h2 {
    font-family: var(--font-mincho);
    font-size: 2.6rem;
    line-height: 1.4;
    margin: 20px 0 30px;
    color: var(--tokiwa-green);
}

.m-visual {
    flex: 1.2;
    position: relative;
}

.m-visual img {
    width: 100%;
    position: relative;
    z-index: 2;
}

.gold-frame {
    position: absolute;
    top: -30px;
    right: -30px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--gold-leaf);
    z-index: 1;
}

/* 戦略エリア：タイルグリッド */
.strategy-area {
    padding: 100px 0 150px;
}

.strategy-header {
    text-align: center;
    margin-bottom: 60px;
}

.strategy-header h2 {
    font-family: var(--font-mincho);
    font-size: 2rem;
    display: inline-block;
    border-bottom: 1px solid var(--gold-leaf);
    padding-bottom: 10px;
}

.tile-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.tile {
    padding: 50px;
    background-color: #fff;
    border: 1px solid #eee;
    transition: 0.4s;
}

.tile.accent {
    background-color: var(--tokiwa-green);
    color: var(--silk-white);
}

.tile h3 {
    font-family: var(--font-mincho);
    margin-bottom: 20px;
    font-size: 1.4rem;
}

.tile:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

/* 結び */
.epilogue {
    padding: 150px 20px;
    text-align: center;
    background: linear-gradient(rgba(252, 252, 249, 0), rgba(175, 146, 80, 0.1));
}

.epilogue-inner p {
    font-family: var(--font-mincho);
    font-size: 2.2rem;
    font-style: italic;
    color: var(--tokiwa-green);
}

/* フッター */
footer {
    padding: 80px 20px;
    background-color: var(--tokiwa-green);
    color: var(--silk-white);
    text-align: center;
}

.copyright {
    margin-top: 20px;
    font-size: 0.8rem;
    opacity: 0.6;
}

/* レスポンシブ */
@media (max-width: 1100px) {
    .hero {
        height: auto;
        flex-direction: column;
    }
    .hero-image {
        position: relative;
        width: 100%;
        top: 0;
        height: 400px;
    }
    .hero-floating-box {
        margin: -50px 20px 0;
        padding: 40px;
        box-shadow: 15px 15px 0 var(--gold-leaf);
    }
    .hero-floating-box h1 {
        font-size: 2.5rem;
    }
    .magazine-layout {
        flex-direction: column;
        gap: 60px;
    }
    .tile-grid {
        grid-template-columns: 1fr;
    }
}