/* リセットとベース設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #FF6B6B;
    --secondary-color: #4ECDC4;
    --accent-color: #45B7D1;
    --text-dark: #2C3E50;
    --text-light: #7F8C8D;
    --background: #FFFFFF;
    --background-light: #F8F9FA;
    --shadow: 0 2px 20px rgba(0,0,0,0.1);
    --gradient: linear-gradient(135deg, #FF6B6B 0%, #4ECDC4 100%);
}

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

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

/* ヘッダー */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 700;
}

.logo-icon {
    font-size: 32px;
    margin-right: 10px;
}

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

.cta-button {
    background: var(--gradient);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 500;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255, 107, 107, 0.3);
}

/* ヒーローセクション */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #F8F9FA 0%, #E9ECEF 100%);
    text-align: center;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.3;
}

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

.hero-subtitle {
    font-size: 20px;
    color: var(--text-light);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 60px;
}

.primary-button, .secondary-button {
    padding: 16px 40px;
    font-size: 16px;
    font-weight: 500;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.primary-button {
    background: var(--gradient);
    color: white;
    border: none;
}

.primary-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 107, 107, 0.3);
}

.secondary-button {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.secondary-button:hover {
    background: var(--primary-color);
    color: white;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 80px;
    margin-top: 60px;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 16px;
    color: var(--text-light);
}

/* 問題提起セクション */
.problems {
    padding: 80px 0;
    background: white;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
}

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

.problem-card {
    text-align: center;
    padding: 40px 30px;
    background: var(--background-light);
    border-radius: 20px;
    transition: transform 0.3s ease;
}

.problem-card:hover {
    transform: translateY(-5px);
}

.problem-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.problem-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.problem-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* ソリューションセクション */
.solution {
    padding: 80px 0;
    background: var(--background-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 30px rgba(0,0,0,0.15);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* デモセクション */
.demo {
    padding: 80px 0;
    background: white;
}

.demo-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.conversation-demo {
    background: var(--background-light);
    padding: 40px;
    border-radius: 20px;
}

.message {
    margin-bottom: 20px;
}

.message-content {
    padding: 15px 20px;
    border-radius: 20px;
    max-width: 80%;
    line-height: 1.6;
}

.customer .message-content {
    background: white;
    margin-left: auto;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.ai .message-content {
    background: var(--gradient);
    color: white;
    margin-right: auto;
}

.demo-features h3 {
    font-size: 24px;
    margin-bottom: 20px;
}

.demo-features ul {
    list-style: none;
}

.demo-features li {
    padding: 10px 0;
    font-size: 18px;
    color: var(--text-dark);
}

/* 業界別ソリューションセクション */
.industry-solutions {
    padding: 80px 0;
    background: var(--background-light);
}

.industry-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.industry-card:hover {
    transform: translateY(-5px);
}

.industry-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.industry-icon {
    font-size: 48px;
    margin-right: 20px;
}

.industry-header h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-dark);
}

.industry-tagline {
    font-size: 20px;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.industry-description {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 30px;
}

.industry-benefits {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.benefit-number {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 30px;
    height: 30px;
    background: var(--gradient);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    font-size: 14px;
}

.benefit-item p {
    flex: 1;
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-dark);
}

/* CTAセクション */
.cta-section {
    padding: 80px 0;
    background: white;
}

.cta-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 40px;
}

.waitlist-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--background-light);
    padding: 40px;
    border-radius: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid transparent;
    border-radius: 10px;
    font-size: 16px;
    background: white;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.submit-button {
    width: 100%;
    padding: 18px;
    background: var(--gradient);
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 500;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 107, 107, 0.3);
}

.form-note {
    text-align: center;
    color: var(--text-light);
    margin-top: 20px;
    font-size: 14px;
}

/* フッター */
footer {
    background: var(--text-dark);
    color: white;
    padding: 40px 0;
}

.footer-content {
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-logo .logo-text {
    color: white;
}

/* アニメーション */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease-out forwards;
}

.problem-card,
.feature-card,
.industry-card {
    opacity: 0;
    transform: translateY(30px);
}

.message {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
}

header {
    transition: transform 0.3s ease;
}

/* 成功メッセージ */
.success-message {
    text-align: center;
    padding: 40px;
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.success-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.success-message h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.success-message p {
    color: var(--text-light);
    line-height: 1.8;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    /* ヘッダー調整 */
    nav {
        padding: 15px 0;
    }
    
    .logo {
        font-size: 20px;
    }
    
    .logo-icon {
        font-size: 24px;
        margin-right: 5px;
    }
    
    .cta-button {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    /* ヒーローセクション */
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 28px;
        margin-bottom: 15px;
    }
    
    .hero-subtitle {
        font-size: 16px;
        margin-bottom: 30px;
        padding: 0 20px;
    }
    
    .hero-subtitle br {
        display: none;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
        padding: 0 20px;
        gap: 15px;
        margin-bottom: 40px;
    }
    
    .primary-button, .secondary-button {
        width: 100%;
        padding: 14px 30px;
        font-size: 15px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 30px;
        margin-top: 40px;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    .stat-label {
        font-size: 14px;
    }
    
    /* セクションタイトル */
    .section-title {
        font-size: 28px;
        margin-bottom: 40px;
        padding: 0 20px;
    }
    
    /* 問題提起セクション */
    .problems {
        padding: 60px 0;
    }
    
    .problem-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .problem-card {
        padding: 30px 20px;
    }
    
    .problem-icon {
        font-size: 36px;
        margin-bottom: 15px;
    }
    
    .problem-card h3 {
        font-size: 20px;
        margin-bottom: 10px;
    }
    
    .problem-card p {
        font-size: 14px;
    }
    
    /* ソリューションセクション */
    .solution {
        padding: 60px 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-card {
        padding: 30px 20px;
    }
    
    .feature-icon {
        font-size: 36px;
        margin-bottom: 15px;
    }
    
    .feature-card h3 {
        font-size: 18px;
        margin-bottom: 10px;
    }
    
    .feature-card p {
        font-size: 14px;
    }
    
    /* デモセクション */
    .demo {
        padding: 60px 0;
    }
    
    .demo-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .conversation-demo {
        padding: 20px;
    }
    
    .message-content {
        padding: 12px 16px;
        font-size: 14px;
        max-width: 85%;
    }
    
    .demo-features h3 {
        font-size: 20px;
        margin-bottom: 15px;
    }
    
    .demo-features li {
        font-size: 16px;
        padding: 8px 0;
    }
    
    /* 業界別ソリューション */
    .industry-solutions {
        padding: 60px 0;
    }
    
    .industry-card {
        padding: 30px 20px;
        margin-bottom: 20px;
    }
    
    .industry-header {
        flex-wrap: wrap;
        margin-bottom: 15px;
    }
    
    .industry-icon {
        font-size: 36px;
        margin-right: 15px;
    }
    
    .industry-header h3 {
        font-size: 22px;
    }
    
    .industry-tagline {
        font-size: 16px;
        margin-bottom: 10px;
    }
    
    .industry-description {
        font-size: 14px;
        margin-bottom: 20px;
    }
    
    .industry-benefits {
        gap: 15px;
    }
    
    .benefit-number {
        min-width: 25px;
        height: 25px;
        font-size: 12px;
    }
    
    .benefit-item p {
        font-size: 14px;
    }
    
    /* CTAセクション */
    .cta-section {
        padding: 60px 0;
    }
    
    .cta-subtitle {
        font-size: 16px;
        padding: 0 20px;
        margin-bottom: 30px;
    }
    
    .cta-subtitle br {
        display: none;
    }
    
    .waitlist-form {
        padding: 30px 20px;
        margin: 0 15px;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
    
    .form-group input,
    .form-group select {
        padding: 12px 15px;
        font-size: 14px;
    }
    
    .submit-button {
        padding: 15px;
        font-size: 16px;
    }
    
    .form-note {
        font-size: 12px;
        margin-top: 15px;
    }
    
    /* フッター */
    footer {
        padding: 30px 0;
    }
    
    .footer-logo {
        font-size: 20px;
        margin-bottom: 15px;
    }
    
    .footer-text {
        font-size: 14px;
    }
}

/* 小さめのモバイル端末対応 */
@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 24px;
    }
    
    .hero-subtitle {
        font-size: 14px;
        padding: 0 10px;
    }
    
    .stat-number {
        font-size: 32px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .waitlist-form {
        padding: 25px 15px;
        margin: 0 10px;
    }
}

/* モバイルメニュー用のスタイル */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-dark);
    padding: 5px;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: white;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    z-index: 999;
    padding: 20px;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu-item {
    width: 100%;
    padding: 15px;
    margin-bottom: 10px;
    background: var(--gradient);
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.mobile-menu-item:last-child {
    margin-bottom: 0;
}

.mobile-menu-item:hover {
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .cta-button {
        padding: 8px 16px;
        font-size: 13px;
    }
}