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

:root {
    --white: #FFFFFF;
    --sky-blue: #4A90E2;
    --light-blue: #7DD3E8;
    --warm-orange: #FF8C42;
    --light-gray: #F5F5F7;
    --dark-gray: #1D1D1F;
    --accent-green: #34C759;
    --accent-red: #FF3B30;
    --border-gray: #E5E5E7;
}

body {
    font-family: 'Noto Serif JP', serif;
    color: var(--dark-gray);
    background-color: var(--white);
    line-height: 1.8;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.logo:hover {
    opacity: 0.8;
}

.logo img {
    height: 40px;
    width: auto;
}

.logo-text {
    font-family: 'Inter', sans-serif;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--sky-blue);
}

.btn-back {
    padding: 0.6rem 1.5rem;
    background-color: var(--light-gray);
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: 'Noto Serif JP', serif;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-back:hover {
    background-color: var(--border-gray);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    margin-top: 80px;
    background: linear-gradient(135deg, var(--sky-blue) 0%, var(--light-blue) 100%);
    padding: 4rem 2rem;
    text-align: center;
    color: var(--white);
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.hero-subtitle {
    font-size: 1.2rem;
    font-weight: 300;
    opacity: 0.9;
}

.device-notice {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-top: 1.5rem;
}

.device-notice i {
    font-size: 1.2rem;
    color: var(--sky-blue);
}

/* Tab Navigation */
.tab-container {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-gray);
    position: sticky;
    top: 80px;
    z-index: 999;
}

.tabs {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    gap: 0;
}

.tab {
    flex: 1;
    padding: 1.2rem 2rem;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Noto Serif JP', serif;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.tab:hover {
    background-color: var(--light-gray);
}

.tab.active {
    border-bottom-color: var(--sky-blue);
    color: var(--sky-blue);
    background-color: rgba(74, 144, 226, 0.05);
}

.tab-icon {
    font-size: 1.3rem;
    color: inherit;
}

.tab-label {
    font-weight: 500;
}

/* Panel */
.panel {
    display: none;
    padding: 4rem 2rem;
    min-height: 60vh;
}

.panel.active {
    display: block;
}

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

.panel-header {
    text-align: center;
    margin-bottom: 4rem;
}

.panel-title {
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--sky-blue);
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.panel-subtitle {
    font-size: 1.1rem;
    color: var(--dark-gray);
    font-weight: 300;
    opacity: 0.8;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.stat-card {
    background: var(--light-gray);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--sky-blue);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--sky-blue);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--dark-gray);
    opacity: 0.7;
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 500;
    color: var(--dark-gray);
}

.section-subtitle {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--dark-gray);
    margin-bottom: 2rem;
}

.btn-secondary {
    padding: 0.6rem 1.5rem;
    background-color: var(--white);
    border: 2px solid var(--sky-blue);
    color: var(--sky-blue);
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: 'Noto Serif JP', serif;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background-color: var(--sky-blue);
    color: var(--white);
}

/* Guest List */
.guest-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.guest-card {
    background: var(--white);
    border: 2px solid var(--border-gray);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 2rem;
    transition: all 0.3s ease;
}

.guest-card:hover {
    border-color: var(--sky-blue);
    box-shadow: 0 5px 20px rgba(74, 144, 226, 0.1);
}

.guest-card.highlight {
    border-color: var(--warm-orange);
    background: rgba(255, 140, 66, 0.05);
}

.guest-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.guest-avatar {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--sky-blue), var(--light-blue));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 600;
}

.guest-details {
    flex: 1;
}

.guest-name {
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: 0.3rem;
    color: var(--dark-gray);
}

.guest-meta {
    font-size: 0.9rem;
    color: var(--dark-gray);
    opacity: 0.6;
}

.guest-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.tag-anniversary {
    background-color: #FFE5E5;
    color: #D32F2F;
}

.tag-birthday {
    background-color: #FFF3E0;
    color: #F57C00;
}

.tag-stay {
    background-color: #E3F2FD;
    color: #1976D2;
}

.tag-vip {
    background-color: #F3E5F5;
    color: #7B1FA2;
}

.btn-view {
    padding: 0.7rem 1.8rem;
    background-color: var(--sky-blue);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: 'Noto Serif JP', serif;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.btn-view:hover {
    background-color: var(--light-blue);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(74, 144, 226, 0.3);
}

/* Surprise Panel */
.surprise-panel {
    background: var(--light-gray);
    border-radius: 16px;
    padding: 2rem;
    margin-top: 2rem;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.surprise-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.surprise-title {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--sky-blue);
}

.btn-close {
    width: 40px;
    height: 40px;
    background: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-close:hover {
    background-color: var(--accent-red);
    color: var(--white);
    transform: rotate(90deg);
}

.surprise-content {
    background: var(--white);
    border-radius: 12px;
    padding: 2rem;
    max-height: 80vh;
    overflow-y: auto;
}

.ai-analysis {
    background: rgba(74, 144, 226, 0.05);
    border-left: 4px solid var(--sky-blue);
    padding: 1.5rem;
    margin-bottom: 2rem;
    border-radius: 8px;
}

.ai-analysis h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--sky-blue);
}

.ai-analysis p {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--dark-gray);
}

.suggestion-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.suggestion-item {
    background: var(--light-gray);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.suggestion-item:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.suggestion-item h5 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--dark-gray);
}

.suggestion-item p {
    font-size: 0.95rem;
    color: var(--dark-gray);
    opacity: 0.7;
    margin-bottom: 0.8rem;
}

.suggestion-cost {
    font-size: 0.9rem;
    color: var(--sky-blue);
    font-weight: 600;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.btn-approve {
    flex: 1;
    padding: 1rem;
    background-color: var(--accent-green);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-family: 'Noto Serif JP', serif;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-approve:hover {
    background-color: #28A745;
    transform: translateY(-2px);
}

.btn-edit {
    flex: 1;
    padding: 1rem;
    background-color: var(--white);
    color: var(--sky-blue);
    border: 2px solid var(--sky-blue);
    border-radius: 8px;
    font-size: 1rem;
    font-family: 'Noto Serif JP', serif;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-edit:hover {
    background-color: var(--sky-blue);
    color: var(--white);
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 3rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--sky-blue), var(--light-blue));
}

.timeline-item {
    position: relative;
    margin-bottom: 4rem;
}

.timeline-marker {
    position: absolute;
    left: -3rem;
    width: 42px;
    height: 42px;
    background: var(--sky-blue);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

.timeline-content {
    padding-left: 2rem;
}

.timeline-title {
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--sky-blue);
    margin-bottom: 1rem;
}

.timeline-card {
    background: var(--light-gray);
    border-radius: 12px;
    padding: 2rem;
    display: flex;
    gap: 1.5rem;
}

.timeline-icon {
    font-size: 3rem;
    flex-shrink: 0;
    color: var(--sky-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: rgba(74, 144, 226, 0.1);
    border-radius: 50%;
}

.timeline-text {
    flex: 1;
}

.timeline-text h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--dark-gray);
}

.timeline-text p {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--dark-gray);
    opacity: 0.7;
    margin-bottom: 1rem;
}

/* Sample Form */
.sample-form {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.sample-form label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--dark-gray);
}

.sample-form input,
.sample-form select {
    padding: 0.7rem;
    border: 1px solid var(--border-gray);
    border-radius: 6px;
    font-family: 'Noto Serif JP', serif;
    font-size: 0.95rem;
}

/* Sample Screen */
.sample-screen {
    margin-top: 1rem;
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.screen-header {
    background: var(--sky-blue);
    color: var(--white);
    padding: 0.8rem;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
}

.screen-alert {
    padding: 1.5rem;
    background: rgba(255, 140, 66, 0.1);
    border-left: 4px solid var(--warm-orange);
    font-size: 0.95rem;
    line-height: 1.8;
}

/* Room Preview */
.room-preview {
    margin-top: 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.room-item {
    background: var(--white);
    padding: 1rem;
    border-radius: 8px;
    font-size: 0.95rem;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* Sample Message */
.sample-message {
    margin-top: 1rem;
    background: var(--white);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.message-text {
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.message-offer {
    background: rgba(74, 144, 226, 0.1);
    padding: 1rem;
    border-radius: 6px;
    text-align: center;
    font-size: 0.95rem;
    color: var(--sky-blue);
    font-weight: 600;
}

/* Comparison Section */
.comparison-section {
    margin-bottom: 4rem;
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.comparison-card {
    background: var(--light-gray);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
}

.comparison-label {
    font-size: 1rem;
    font-weight: 500;
    color: var(--dark-gray);
    margin-bottom: 1.5rem;
}

.comparison-values {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.value-before,
.value-after {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.value-label {
    font-size: 0.8rem;
    color: var(--dark-gray);
    opacity: 0.6;
    margin-bottom: 0.3rem;
}

.value-number {
    font-size: 2rem;
    font-weight: 600;
    color: var(--dark-gray);
}

.value-number.highlight {
    color: var(--sky-blue);
}

.value-arrow {
    font-size: 1.5rem;
    color: var(--dark-gray);
    opacity: 0.3;
}

.comparison-change {
    font-size: 1.1rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    display: inline-block;
}

.comparison-change.positive {
    background-color: rgba(52, 199, 89, 0.1);
    color: var(--accent-green);
}

/* Charts Section */
.charts-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.chart-card {
    background: var(--light-gray);
    border-radius: 12px;
    padding: 2rem;
}

.chart-title {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--dark-gray);
    margin-bottom: 1.5rem;
    text-align: center;
}

/* ROI Section */
.roi-section {
    background: var(--light-gray);
    border-radius: 16px;
    padding: 3rem;
    margin-bottom: 4rem;
}

.roi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.roi-card {
    background: var(--white);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
}

.roi-label {
    font-size: 0.95rem;
    color: var(--dark-gray);
    opacity: 0.7;
    margin-bottom: 1rem;
}

.roi-value {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--dark-gray);
}

.roi-value.highlight {
    color: var(--accent-green);
}

.roi-note {
    text-align: center;
    font-size: 0.85rem;
    color: var(--dark-gray);
    opacity: 0.6;
    margin-top: 1rem;
}

/* Testimonial Section */
.testimonial-section {
    margin-bottom: 4rem;
}

.testimonial-card {
    background: var(--light-gray);
    border-radius: 16px;
    padding: 3rem;
    position: relative;
}

.testimonial-quote {
    position: absolute;
    top: 1rem;
    left: 2rem;
    font-size: 5rem;
    color: var(--sky-blue);
    opacity: 0.2;
    line-height: 1;
}

.testimonial-text {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--dark-gray);
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.testimonial-author strong {
    font-size: 1rem;
    color: var(--dark-gray);
}

.testimonial-author span {
    font-size: 0.9rem;
    color: var(--dark-gray);
    opacity: 0.6;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--sky-blue) 0%, var(--light-blue) 100%);
    padding: 5rem 2rem;
    text-align: center;
    color: var(--white);
}

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

.cta-title {
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.cta-text {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    padding: 1.2rem 3rem;
    background-color: var(--white);
    color: var(--sky-blue);
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-family: 'Noto Serif JP', serif;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Footer */
footer {
    background-color: var(--dark-gray);
    color: var(--white);
    padding: 3rem 2rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-tagline {
    font-size: 0.9rem;
    opacity: 0.7;
}

.footer-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    font-size: 0.9rem;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .device-notice {
        font-size: 0.85rem;
        padding: 0.625rem 1.25rem;
        gap: 0.5rem;
        margin-top: 1rem;
    }

    .device-notice i {
        font-size: 1rem;
    }

    .tabs {
        flex-direction: column;
        gap: 0.5rem;
    }

    .tab {
        padding: 1rem;
        font-size: 0.9rem;
    }

    .panel-title {
        font-size: 1.5rem;
    }

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

    .guest-card {
        flex-direction: column;
        align-items: flex-start;
        padding: 1rem;
    }

    .guest-info {
        margin-bottom: 1rem;
    }

    .guest-actions {
        width: 100%;
    }

    .guest-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .timeline {
        padding-left: 2rem;
    }

    .timeline-marker {
        left: -2rem;
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }

    .timeline-card {
        flex-direction: column;
        padding: 1rem;
    }

    .timeline-content {
        margin-top: 1rem;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
    }

    .charts-section {
        grid-template-columns: 1fr;
    }

    .cta-title {
        font-size: 1.8rem;
    }

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

    .footer-links {
        justify-content: center;
    }

    /* モーダルのモバイル最適化 */
    .modal-content {
        width: 95%;
        max-width: 95%;
        max-height: 90vh;
        margin: 5vh auto;
        padding: 1.5rem;
        overflow-y: auto;
    }

    .modal-header h2 {
        font-size: 1.3rem;
    }

    .modal-close {
        width: 36px;
        height: 36px;
        font-size: 1.5rem;
    }

    /* プロフィールカードのモバイル最適化 */
    .profile-card {
        padding: 1rem;
    }

    .profile-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .profile-item {
        padding: 0.75rem;
    }

    /* プラン詳細のモバイル最適化 */
    .plans-container {
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }

    .plan-card {
        padding: 1.5rem;
        min-height: auto;
    }

    .plan-header {
        padding: 1rem;
    }

    .plan-title {
        font-size: 1.2rem;
    }

    .plan-concept {
        font-size: 0.85rem;
    }

    .plan-cost {
        font-size: 1.5rem;
        margin: 1rem 0;
    }

    .plan-items {
        gap: 0.75rem;
    }

    .plan-item {
        padding: 0.75rem;
    }

    .plan-item-title {
        font-size: 0.95rem;
    }

    .plan-item-cost {
        font-size: 0.95rem;
    }

    .plan-footer {
        padding: 1rem;
        flex-direction: column;
        gap: 0.5rem;
    }

    .plan-footer .btn {
        width: 100%;
        justify-content: center;
        padding: 0.875rem;
    }

    /* AIインサイトのモバイル最適化 */
    .ai-insight {
        padding: 1rem;
    }

    .insight-title {
        font-size: 0.95rem;
    }

    /* システム統合セクションのモバイル最適化 */
    .integration-diagram {
        padding: 1.5rem 1rem;
    }

    .integration-step {
        padding: 1rem;
    }

    .integration-step h4 {
        font-size: 0.95rem;
    }

    /* Slack統合のモバイル最適化 */
    .slack-mock {
        padding: 1rem;
    }

    .slack-message {
        padding: 0.875rem;
    }

    /* タイムラインのモバイル最適化 */
    .guest-timeline {
        padding: 1rem;
    }

    .timeline-step {
        padding: 1rem;
        margin-bottom: 1rem;
    }

    .timeline-step-content h4 {
        font-size: 1rem;
    }

    /* questionnaire のモバイル最適化 */
    .questionnaire {
        padding: 1rem;
    }

    .form-group {
        margin-bottom: 1rem;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 1rem;
        padding: 0.75rem;
    }

    /* セキュリティセクションのモバイル最適化 */
    .security-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .security-item {
        padding: 1rem;
    }

    /* パディング・マージンの調整 */
    .panel {
        padding: 1.5rem 1rem;
    }

    .section-title {
        font-size: 1.3rem;
        margin-bottom: 1rem;
    }

    .section-description {
        font-size: 0.95rem;
        margin-bottom: 1.5rem;
    }
}