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

:root {
    --primary-color: rgb(193, 63, 63);
    --primary-dark: rgb(153, 43, 43);
    --primary-light: rgb(213, 103, 103);
    --bg-gradient: linear-gradient(135deg, rgba(193, 63, 63, 0.1) 0%, rgba(255, 255, 255, 0.9) 100%);
}

body {
    font-family: 'Arial Rounded MT Bold', 'Helvetica Rounded', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

/* ヘッダー */
header {
    position: fixed;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 1rem 0;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.language-selector {
    padding: 0.5rem 1rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    background: white;
    color: #333;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.language-selector:hover {
    border-color: var(--primary-color);
}

.language-selector:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(193, 63, 63, 0.1);
}

.logo {
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary-color);
    letter-spacing: 2px;
    font-family: 'Arial Rounded MT Bold', 'Helvetica Rounded', Arial, sans-serif;
}

.cta-button {
    background: var(--primary-color);
    color: white;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.cta-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(193, 63, 63, 0.3);
}

/* ヒーローセクション */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--bg-gradient);
    padding: 6rem 2rem 4rem;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 900;
    letter-spacing: -1px;
}

.hero-text .subtitle {
    font-size: 1.5rem;
    color: #666;
    margin-bottom: 2rem;
}


.hero-visual {
    position: relative;
    display: flex;
    justify-content: flex-end;
}

.phone-mockup {
    width: 100%;
    max-width: 400px;
    height: 600px;
    background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
    border-radius: 40px;
    padding: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: rgb(193, 93, 93);
    border-radius: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
}

.app-icon {
    width: 120px;
    height: 120px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-icon img {
    width: 100%;
    height: 100%;
}

/* 特徴セクション */
.features {
    padding: 5rem 2rem;
    background: white;
}

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

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.feature-card {
    text-align: center;
    padding: 2rem;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(193, 63, 63, 0.1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.feature-icon svg {
    width: 40px;
    height: 40px;
    color: white;
}

.feature-icon i {
    font-size: 35px;
    color: white;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.feature-card p {
    color: #666;
    line-height: 1.8;
}

/* CTAセクション */
.cta-section {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    text-align: center;
    color: white;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-button-secondary {
    background: white;
    color: var(--primary-color);
    padding: 1rem 3rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    display: inline-block;
}

.cta-button-secondary:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.3);
}

/* フッター */
footer {
    background: #f8f8f8;
    padding: 3rem 2rem;
    text-align: center;
    color: #666;
}

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

.footer-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1rem;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text h1 {
        font-size: 2.5rem;
        text-align: center;
    }

    .hero-text .subtitle {
        text-align: center;
    }

    .hero-text {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .hero-visual {
        order: -1;
        justify-content: center;
    }

    .phone-mockup {
        max-width: 300px;
        height: 450px;
        margin: 0 auto;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    nav {
        padding: 0 1rem;
    }

    .logo {
        font-size: 1.5rem;
    }

    .cta-button {
        padding: 0.6rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .nav-right {
        gap: 0.5rem;
    }
    
    .language-selector {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }
}

/* アニメーション */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.phone-mockup {
    animation: float 6s ease-in-out infinite;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-text > *, .feature-card {
    animation: fadeInUp 0.8s ease-out forwards;
}

.hero-text .subtitle { animation-delay: 0.2s; }
.cta-button { animation-delay: 0.4s; }
.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }