:root {
    --primary-color: #F05B78;
    --secondary-color: #6A3093;
    --dark-color: #2D1832;
    --light-color: #F4F4F4;
    --text-color: #FFFFFF;
    --gradient: linear-gradient(135deg, #F05B78, #6A3093);
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--dark-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-color);
}

/* ヘッダースタイル */
header {
    background-color: rgba(45, 24, 50, 0.95);
    padding: 15px 0;
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
}

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

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

.logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    margin-left: 10px;
    color: var(--text-color);
}

.logo-icon {
    width: 40px;
    height: 40px;
}

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

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
    padding-bottom: 5px;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s ease;
}

nav ul li a:hover {
    color: var(--primary-color);
}

nav ul li a:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 3px 0;
    transition: var(--transition);
}

/* ヒーローセクション */
.hero {
    padding: 160px 0 100px;
    background: var(--dark-color);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%236A3093' fill-opacity='0.1' d='M0,64L48,80C96,96,192,128,288,128C384,128,480,96,576,90.7C672,85,768,107,864,144C960,181,1056,235,1152,229.3C1248,224,1344,160,1392,128L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E");
    background-size: cover;
    background-position: center;
    opacity: 0.3;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 25px;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    background: var(--gradient);
    color: white;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: bold;
    letter-spacing: 1px;
    box-shadow: 0 5px 15px rgba(240, 91, 120, 0.4);
    transition: var(--transition);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(240, 91, 120, 0.6);
    color: white;
}

.btn-large {
    padding: 15px 40px;
    font-size: 1.1rem;
}

/* 特徴セクション */
.features {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
    font-size: 2.5rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: rgba(106, 48, 147, 0.2);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: var(--gradient);
}

.feature-icon {
    margin-bottom: 20px;
    text-align: center;
}

.feature-card h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
    color: var(--primary-color);
}

/* 使い方セクション */
.how-it-works {
    padding: 100px 0;
    background-color: rgba(45, 24, 50, 0.7);
}

.steps {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
}

.step {
    flex: 1;
    min-width: 250px;
    text-align: center;
    padding: 20px;
    position: relative;
}

.step-circle {
    width: 70px;
    height: 70px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 25px;
    font-size: 1.8rem;
    font-weight: bold;
    color: white;
    box-shadow: var(--shadow);
}

.step h3 {
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.step p {
    opacity: 0.8;
}

/* テスティモニアルセクション */
.testimonials {
    padding: 100px 0;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background-color: rgba(106, 48, 147, 0.2);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    position: relative;
}

.testimonial-text {
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.author-name {
    font-weight: bold;
    color: var(--primary-color);
}

/* CTAセクション */
.cta-section {
    padding: 80px 0;
    text-align: center;
    background: var(--gradient);
    position: relative;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%23FFFFFF' fill-opacity='0.05' d='M0,224L48,218.7C96,213,192,203,288,181.3C384,160,480,128,576,128C672,128,768,160,864,181.3C960,203,1056,213,1152,208C1248,203,1344,181,1392,170.7L1440,160L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E");
    background-size: cover;
    opacity: 0.1;
    z-index: 0;
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-section h2 {
    margin-bottom: 20px;
    font-size: 2.5rem;
}

.cta-section p {
    margin-bottom: 30px;
    font-size: 1.2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* フッター */
footer {
    padding: 60px 0 30px;
    background-color: rgba(30, 15, 35, 1);
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-logo {
    margin-bottom: 30px;
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.footer-links a {
    margin: 0 15px 10px;
    color: #999;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-text {
    text-align: center;
    color: #666;
    font-size: 0.9rem;
    margin-top: 20px;
}

.animate {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.animate.visible {
    opacity: 1;
    transform: translateY(0);
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    nav {
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: rgba(45, 24, 50, 0.98);
        padding: 20px 0;
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: all 0.3s ease;
    }
    
    nav.active {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    nav ul li {
        margin: 10px 0;
        margin-left: 0;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features-grid,
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
    
    .steps {
        flex-direction: column;
    }
    
    .step {
        margin-bottom: 40px;
    }
    
    .step:last-child {
        margin-bottom: 0;
    }
    
    .btn-large {
        padding: 12px 30px;
        font-size: 1rem;
    }
}