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

:root {
    --primary-color: #00B4D8;
    --secondary-color: #FFB700;
    --accent-color: #FF6B6B;
    --success-color: #06FFA5;
    --text-primary: #2D3436;
    --text-secondary: #636E72;
    --bg-light: #F8F9FA;
    --bg-white: #FFFFFF;
    --gradient-ocean: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-sky: linear-gradient(135deg, #00B4D8 0%, #0077B6 100%);
    --gradient-sunset: linear-gradient(135deg, #FFB700 0%, #FF6B6B 100%);
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.15);
    --border-radius: 16px;
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ヒーローセクション */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-sky);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.wave-animation {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 200%;
    height: 200px;
    background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 1200 120" xmlns="http://www.w3.org/2000/svg"><path d="M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z" opacity=".25" fill="#FFFFFF"/><path d="M0,0V15.81C13,36.92,27.64,56.86,47.69,72.05,99.41,111.27,165,111,224.58,91.58c31.15-10.15,60.09-26.07,89.67-39.8,40.92-19,84.73-46,130.83-49.67,36.26-2.85,70.9,9.42,98.6,31.56,31.77,25.39,62.32,62,103.63,73,40.44,10.79,81.35-6.69,119.13-24.28s75.16-39,116.92-43.05c59.73-5.85,113.28,22.88,168.9,38.84,30.2,8.66,59,6.17,87.09-7.5,22.43-10.89,48-26.93,60.65-49.24V0Z" opacity=".5" fill="#FFFFFF"/><path d="M0,0V5.63C149.93,59,314.09,71.32,475.83,42.57c43-7.64,84.23-20.12,127.61-26.46,59-8.63,112.48,12.24,165.56,35.4C827.93,77.22,886,95.24,951.2,90c86.53-7,172.46-45.71,248.8-84.81V0Z" fill="#FFFFFF"/></svg>') repeat-x;
    animation: wave 10s linear infinite;
}

.fish-animation {
    position: absolute;
    width: 60px;
    height: 40px;
    background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 60 40" xmlns="http://www.w3.org/2000/svg"><path d="M10,20 Q30,10 50,20 Q30,30 10,20" fill="%23FFB700" opacity="0.8"/><circle cx="40" cy="20" r="2" fill="%23000"/></svg>') no-repeat center;
    background-size: contain;
}

.fish-1 {
    top: 20%;
    left: -60px;
    animation: swim 15s linear infinite;
}

.fish-2 {
    top: 50%;
    left: -60px;
    animation: swim 20s linear infinite 2s;
}

.fish-3 {
    top: 70%;
    left: -60px;
    animation: swim 18s linear infinite 5s;
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 80px 0;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    margin-bottom: 20px;
    color: white;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.title-line-1 {
    display: block;
    font-size: 0.7em;
    color: var(--secondary-color);
}

.title-line-2 {
    display: block;
    background: linear-gradient(45deg, #FFFFFF, #FFE66D);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 30px;
    color: rgba(255,255,255,0.9);
    line-height: 1.8;
}

.hero-features {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.feature-badge {
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
    padding: 8px 20px;
    border-radius: 25px;
    font-weight: 600;
    color: white;
    border: 2px solid rgba(255,255,255,0.3);
    font-size: 0.9rem;
}

.cta-button, .cta-button-large {
    display: inline-block;
    background: var(--gradient-sunset);
    color: white;
    padding: 16px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(255,107,107,0.3);
}

.cta-button-large {
    padding: 20px 60px;
    font-size: 1.3rem;
}

.cta-button:hover, .cta-button-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(255,107,107,0.4);
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 100%;
    max-width: 500px;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.2));
}

.speech-bubble {
    position: absolute;
    background: white;
    padding: 15px 20px;
    border-radius: 20px;
    font-weight: 700;
    color: var(--primary-color);
    box-shadow: var(--shadow-md);
    animation: bounce 2s ease-in-out infinite;
}

.speech-bubble::before {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 20px;
    width: 20px;
    height: 20px;
    background: white;
    transform: rotate(45deg);
}

.bubble-1 {
    top: -20px;
    right: 20px;
    animation-delay: 0s;
}

.bubble-2 {
    bottom: 20px;
    left: -30px;
    animation-delay: 1s;
}

/* セクション共通 */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    margin-bottom: 60px;
    color: var(--text-primary);
}

.highlight {
    background: var(--gradient-sunset);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 特徴セクション */
.features {
    background-color: var(--bg-light);
}

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

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-sky);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    width: 50px;
    height: 50px;
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 使い方セクション */
.how-to-use {
    background: white;
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 60px;
    background: var(--gradient-sunset);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 900;
    box-shadow: var(--shadow-md);
    z-index: 2;
}

.step-image {
    background: var(--bg-light);
    border-radius: var(--border-radius);
    padding: 40px 20px 20px;
    margin-bottom: 20px;
}

.step-image img {
    width: 100%;
    max-width: 250px;
    height: auto;
}

.step h3 {
    font-size: 1.4rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.step p {
    color: var(--text-secondary);
}

/* 音声サンプルセクション */
.voice-samples {
    background: var(--bg-light);
}

.voice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.voice-card {
    background: white;
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all 0.3s ease;
}

.voice-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.voice-situation {
    background: var(--gradient-sky);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 15px;
    font-weight: 600;
}

.voice-text {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 20px;
    font-weight: 700;
}

.play-button {
    background: var(--secondary-color);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.play-button:hover {
    background: #E5A100;
    transform: scale(1.05);
}

.play-button:active {
    transform: scale(0.95);
}

/* 対象者セクション */
.target-users {
    background: white;
}

.users-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.user-card {
    text-align: center;
}

.user-image {
    width: 200px;
    height: 200px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

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

.user-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.user-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 商品ラインナップ */
.lineup {
    background: var(--bg-light);
}

.lineup-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

.product-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    position: relative;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.product-card.featured {
    border: 3px solid var(--secondary-color);
    transform: scale(1.05);
}

.product-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--gradient-sunset);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.9rem;
    z-index: 2;
}

.product-image {
    height: 250px;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.product-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.product-card h3 {
    font-size: 1.5rem;
    margin: 20px 30px 15px;
    color: var(--text-primary);
}

.product-features {
    list-style: none;
    padding: 0 30px;
    margin-bottom: 30px;
}

.product-features li {
    padding: 8px 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 25px;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 700;
}

.price {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary-color);
    text-align: center;
    margin: 20px 0;
}

.order-button {
    display: block;
    width: calc(100% - 60px);
    margin: 0 30px 30px;
    background: var(--gradient-sky);
    color: white;
    text-align: center;
    padding: 15px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
}

.order-button:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(0,180,216,0.3);
}

/* お客様の声 */
.testimonials {
    background: white;
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background: var(--bg-light);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.stars {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.testimonial-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-primary);
    margin-bottom: 30px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.author-name {
    font-weight: 700;
    color: var(--text-primary);
}

.author-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* FAQ */
.faq {
    background: var(--bg-light);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    margin-bottom: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 25px 30px;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-icon {
    width: 24px;
    height: 24px;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 30px 25px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* CTA */
.order-cta {
    background: var(--gradient-ocean);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.order-cta::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: sparkle 20s linear infinite;
}

.cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
}

.cta-content h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 40px;
}

.cta-content .highlight {
    color: var(--secondary-color);
    -webkit-text-fill-color: var(--secondary-color);
}

.limited-offer {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.offer-item {
    text-align: center;
}

.offer-item img {
    width: 100px;
    height: 100px;
    margin-bottom: 15px;
    filter: drop-shadow(0 5px 10px rgba(0,0,0,0.2));
}

.offer-item p {
    font-size: 1.1rem;
    font-weight: 600;
}

.countdown {
    margin-bottom: 40px;
}

.countdown p {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.countdown-timer {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.time-unit {
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
    padding: 20px;
    border-radius: 10px;
    min-width: 80px;
}

.time-value {
    display: block;
    font-size: 2.5rem;
    font-weight: 900;
    line-height: 1;
}

.time-label {
    display: block;
    font-size: 0.9rem;
    margin-top: 5px;
}

/* フッター */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 50px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-logo h3 {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.footer-logo p {
    color: rgba(255,255,255,0.7);
}

.footer-links {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.5);
}

/* レスポンシブ */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-image {
        order: -1;
    }
    
    .speech-bubble {
        display: none;
    }
    
    .features-grid,
    .steps-container,
    .users-grid,
    .lineup-grid,
    .voice-grid {
        grid-template-columns: 1fr;
    }
    
    .limited-offer {
        flex-direction: column;
        gap: 30px;
    }
    
    .countdown-timer {
        gap: 10px;
    }
    
    .time-unit {
        min-width: 60px;
        padding: 15px 10px;
    }
    
    .time-value {
        font-size: 2rem;
    }
}

/* ユーティリティ */
.floating {
    animation: float 3s ease-in-out infinite;
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}