:root {
    --primary-color: #2c5364;
    --secondary-color: #d8c4a0;
    --accent-color: #ff85a1;
    --bg-light: #f4f1ea;
    --text-dark: #1a1a1a;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

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

body {
    font-family: 'Noto Sans JP', 'Outfit', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

/* 背景テクスチャ */
.background-texture {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://www.transparenttextures.com/patterns/parchment.png');
    opacity: 0.4;
    z-index: -2;
    pointer-events: none;
}

.stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(216, 196, 160, 0.1) 0%, transparent 80%);
    z-index: -1;
    pointer-events: none;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    padding: 20px 0;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
}

.logo img {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    box-shadow: var(--shadow);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 700;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--accent-color);
}

/* Hero Section */
#hero {
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 20px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--primary-color);
    letter-spacing: -1px;
}

.highlight {
    color: var(--accent-color);
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 15px;
    background: rgba(255, 133, 161, 0.2);
    z-index: -1;
}

.hero-desc {
    font-size: 1.2rem;
    color: #555;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    padding: 15px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    transition: transform 0.3s, box-shadow 0.3s;
    margin: 0 10px;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 10px 20px rgba(44, 83, 100, 0.2);
}

.btn-secondary {
    background-color: white;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

/* Sections */
section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 60px;
    color: var(--primary-color);
}

/* Concept Card */
.concept-card {
    background: white;
    padding: 60px;
    border-radius: 30px;
    box-shadow: var(--shadow);
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.concept-card h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

/* Character Grid */
.character-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
}

.char-card {
    background: var(--glass-bg);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
}

.char-card:hover {
    transform: scale(1.05);
    background: white;
    box-shadow: var(--shadow);
}

.char-img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin-bottom: 20px;
    border: 4px solid var(--secondary-color);
    object-fit: cover;
}

.char-name {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.char-tag {
    font-size: 0.8rem;
    color: var(--accent-color);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* SNS Card */
.sns-card {
    background: var(--primary-color);
    color: white;
    padding: 80px;
    border-radius: 40px;
    text-align: center;
}

.sns-icons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.sns-link {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    transition: background 0.3s;
}

.sns-link:hover {
    background: var(--accent-color);
}

/* Footer */
footer {
    text-align: center;
    padding: 40px 0;
    font-size: 0.8rem;
    color: #888;
}

@media (max-width: 768px) {
    .hero-title { font-size: 2.5rem; }
    .nav-links { display: none; }
}