/* 変数設定 */
:root {
    --bg-dark: #050505;
    --text-main: #ffffff;
    --text-sub: #b0b0b0;
    --accent-blue: #00d2ff;
    --accent-purple: #9d50bb;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.1);
    --font-main: 'Inter', 'Noto Sans JP', sans-serif;
}

/* 全体設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

/* 背景のぼかし装飾 */
.bg-blur {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 10% 20%, rgba(0, 210, 255, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(157, 80, 187, 0.15) 0%, transparent 40%);
    z-index: -1;
}

/* ヘッダー */
header {
    height: 90px;
    display: flex;
    align-items: center;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid var(--glass-border);
    backdrop-filter: blur(15px);
}

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

.logo {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 1.5rem;
    letter-spacing: 1px;
}

.logo span {
    color: var(--accent-blue);
    font-weight: 300;
}

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

nav a {
    text-decoration: none;
    color: var(--text-sub);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 1px;
    transition: 0.3s;
}

nav a:hover {
    color: var(--text-main);
}

/* ヒーローセクション */
.hero {
    padding: 180px 20px 100px;
    text-align: center;
}

.tag {
    font-family: 'Outfit', sans-serif;
    color: var(--accent-blue);
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    font-size: 0.8rem;
    margin-bottom: 20px;
    display: block;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: 30px;
    font-weight: 700;
}

.hero p {
    color: var(--text-sub);
    max-width: 600px;
    margin: 0 auto 60px;
}

.hero-image {
    max-width: 1100px;
    margin: 0 auto;
    border-radius: 40px;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    box-shadow: 0 30px 100px rgba(0,0,0,0.5);
}

.hero-image img {
    width: 100%;
    display: block;
}

/* カテゴリーセクション */
.categories {
    padding: 100px 20px;
}

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

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

.section-title h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.section-title p {
    color: var(--accent-blue);
}

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

.glass-item {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 50px 30px;
    border-radius: 30px;
    text-align: center;
    transition: 0.4s;
}

.glass-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-10px);
    border-color: var(--accent-blue);
}

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

/* インフォカード */
.feature-info {
    padding: 100px 20px 150px;
}

.info-card {
    max-width: 1100px;
    margin: 0 auto;
    background: linear-gradient(135deg, #111, #222);
    border-radius: 40px;
    display: flex;
    overflow: hidden;
    align-items: center;
}

.info-text {
    flex: 1;
    padding: 80px;
}

.info-text h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
}

.info-img {
    flex: 1;
}

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

/* フッター */
footer {
    padding: 80px 20px;
    text-align: center;
    color: var(--text-sub);
    font-size: 0.8rem;
    border-top: 1px solid var(--glass-border);
}

/* レスポンシブ */
@media (max-width: 900px) {
    .glass-grid {
        grid-template-columns: 1fr;
    }
    .info-card {
        flex-direction: column;
    }
    .info-text {
        padding: 40px;
        text-align: center;
    }
}