:root {
    --color-primary: #F5576C;
    --color-primary-dark: #d63f56;
    --color-primary-light: rgba(245, 87, 108, 0.1);
    --color-surface: #ffffff;
    --color-background: #f5f6f9;
    --color-border: #e5e7eb;
    --color-text: #111827;
    --color-text-secondary: #4b5563;
    --color-text-muted: #6b7280;
    --color-neutral: #f8f9fb;
    --shadow-card: 0 18px 45px rgba(15, 23, 42, 0.08);
    --shadow-soft: 0 12px 30px rgba(15, 23, 42, 0.05);
    --shadow-hover: 0 24px 55px rgba(17, 24, 39, 0.12);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;
    --spacing-2xl: 120px;
    --container-width: min(1200px, 92vw);
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color-scheme: only light;
}

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--color-background);
    color: var(--color-text);
    font-size: 15px;
    line-height: 1.75;
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
}

img, video {
    display: block;
    width: 100%;
    border-radius: inherit;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(16px);
    background: rgba(255, 255, 255, 0.92);
    border-bottom: 1px solid rgba(229, 231, 235, 0.8);
    transition: box-shadow var(--transition);
}

.site-header.scrolled {
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.1);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
}

.brand {
    font-weight: 700;
    font-size: 18px;
    letter-spacing: 0.02em;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--spacing-xs);
    border: none;
    background: transparent;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 999px;
    transition: transform var(--transition), opacity var(--transition);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    font-size: 14px;
    font-weight: 500;
}

.site-nav a {
    position: relative;
    color: var(--color-text-secondary);
}

.site-nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
    transform: scaleX(1);
}

.nav-cta {
    padding: 10px 20px;
    border-radius: 999px;
    background: var(--color-primary);
    color: #fff !important;
    box-shadow: 0 12px 30px rgba(245, 87, 108, 0.25);
}

.nav-cta::after {
    display: none;
}

.hero {
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
    background: radial-gradient(circle at top right, rgba(245, 87, 108, 0.08), transparent 55%), var(--color-surface);
}

.hero-inner {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-copy {
    flex: 1 1 420px;
    max-width: 560px;
}

.eyebrow {
    display: inline-flex;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(245, 87, 108, 0.1);
    color: var(--color-primary);
    font-size: 12px;
    letter-spacing: 0.18em;
}

.hero h1 {
    font-size: clamp(36px, 5vw, 40px);
    line-height: 1.2;
    margin: var(--spacing-sm) 0;
}

.lead {
    font-size: 17px;
    color: var(--color-text-secondary);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin: var(--spacing-lg) 0 var(--spacing-md);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 999px;
    border: none;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), color var(--transition), background var(--transition);
}

.btn-large {
    padding: 16px 36px;
    font-size: 16px;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 18px 40px rgba(245, 87, 108, 0.35);
}

.btn-primary:hover,
.btn-primary:focus-visible {
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
    border-color: var(--color-primary);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    text-decoration: underline;
    text-underline-offset: 4px;
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
    color: var(--color-primary);
}

.btn-full {
    width: 100%;
}

.hero-stats {
    padding: var(--spacing-xl) 0;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.hero-stats .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-md);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.stat dt {
    font-size: 13px;
    color: var(--color-text-muted);
}

.stat-number {
    font-size: 42px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-primary);
}

.stat-unit {
    margin-left: 4px;
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.hero-media {
    flex: 1 1 420px;
}

.media-frame {
    position: relative;
    overflow: hidden;
}

.hero-video {
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.video-control {
    position: absolute;
    bottom: 16px;
    right: 16px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: rgba(17, 24, 39, 0.75);
    display: grid;
    place-items: center;
}

.video-control__icon {
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 8px 0 8px 14px;
    border-color: transparent transparent transparent #fff;
}

.video-control.is-paused .video-control__icon {
    width: 14px;
    height: 14px;
    border: none;
    background: linear-gradient(90deg, #fff 40%, transparent 40% 60%, #fff 60%);
}

.media-caption {
    margin-top: var(--spacing-sm);
    font-size: 13px;
    color: var(--color-text-muted);
}

.hero-badges {
    margin-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    background: var(--color-background);
}

.hero-badges .container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-xl) 0;
    align-items: center;
    text-align: center;
}

.hero-badges p {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.badge-logos {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    justify-content: center;
    opacity: 1;
}

.badge-logos img {
    width: clamp(140px, 15vw, 200px);
    height: auto;
    filter: none;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-eyebrow {
    display: inline-flex;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.18em;
    color: var(--color-primary);
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.section-header h2 {
    font-size: clamp(32px, 4vw, 42px);
    line-height: 1.35;
    letter-spacing: -0.02em;
    margin: 0 0 var(--spacing-2xl);
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

/* 蛟句挨縺ｮh2縺ｮmargin-bottom繧堤｢ｺ隱阪�邨ｱ荳€ */
#problem-heading,
#overview-heading,
#demo-heading,
#workflow-heading,
#data-heading,
#case-heading,
#resource-heading,
#pricing-heading,
#faq-heading,
#cta-heading {
    margin-bottom: var(--spacing-xl);
}

.section-header h2::before {
    content: '';
    position: absolute;
    display: inline-block;
    width: 1px;
    height: 24px;
    bottom: -36px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-primary);
}

.tour-sidebar h2,
.cta-text h2 {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    margin-bottom: var(--spacing-2xl);
}

.tour-sidebar h2::before,
.cta-text h2::before {
    content: '';
    position: absolute;
    display: inline-block;
    width: 1px;
    height: 24px;
    bottom: -36px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-primary);
}

#workflow-heading {
    margin-bottom: var(--spacing-xl);
}

.section-lead {
    color: var(--color-text-secondary);
    max-width: 720px;
    margin: 0 auto;
}

.problem-map {
    padding: var(--spacing-2xl) 0;
    background: var(--color-surface);
}

.problem-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.problem-chip {
    padding: 10px 18px;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: #fff;
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: all var(--transition);
}

.problem-chip:hover,
.problem-chip:focus-visible,
.problem-chip.is-active {
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: var(--shadow-soft);
}

.problem-detail {
    margin-bottom: var(--spacing-xl);
    display: grid;
    grid-template-columns: minmax(280px, 520px) minmax(280px, 1fr);
    gap: var(--spacing-lg);
    align-items: start;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: var(--color-neutral);
    box-shadow: var(--shadow-soft);
}

.problem-detail img {
    object-fit: cover;
    height: 100%;
    max-width: 100%;
    width: 100%;
}

.problem-detail figure {
    max-width: 100%;
    overflow: hidden;
    margin: 0;
}

.problem-detail h3 {
    font-size: 22px;
    margin-bottom: var(--spacing-sm);
}

.problem-detail ul {
    margin: var(--spacing-md) 0 0;
    padding-left: 1.2rem;
    color: var(--color-text-secondary);
}

.platform-overview {
    padding: var(--spacing-2xl) 0;
    background: var(--color-surface);
}

.solution-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.solution-card {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: minmax(260px, 1fr) minmax(320px, 1fr);
    background: var(--color-neutral);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
}

.solution-card video {
    aspect-ratio: 16 / 10;
    object-fit: cover;
    box-shadow: var(--shadow-soft);
}

.solution-card img {
    max-width: 100%;
    width: 100%;
    height: auto;
    object-fit: contain;
}

.solution-card figure {
    max-width: 100%;
    overflow: hidden;
    margin: 0;
}

.solution-body h3 {
    font-size: 22px;
    margin-bottom: var(--spacing-sm);
}

.solution-body ul {
    margin: var(--spacing-md) 0 0;
    padding-left: 1.2rem;
    color: var(--color-text-secondary);
}

.product-tour {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(180deg, var(--color-neutral), #fff);
}

.tour-wrapper {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: minmax(300px, 1fr) minmax(260px, 320px);
    align-items: start;
}

.tour-media video {
    box-shadow: var(--shadow-card);
}

.tour-sidebar {
    background: var(--color-surface);
    padding: var(--spacing-sm);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.tour-playlist {
    margin: var(--spacing-md) 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: var(--spacing-xs);
}

.tour-playlist button {
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: #fff;
    font-size: 14px;
    text-align: left;
    transition: all var(--transition);
}

.tour-playlist button:hover,
.tour-playlist button.is-active {
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: var(--shadow-soft);
}

.workflow {
    padding: var(--spacing-2xl) 0;
    background: var(--color-surface);
}

.workflow-timeline {
    list-style: none;
    margin: 0 auto;
    padding: 0;
    position: relative;
    padding-left: 60px;
    max-width: 800px;
}

.workflow-timeline::before {
    content: '';
    position: absolute;
    left: 28px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--color-primary), rgba(245, 87, 108, 0.3));
}

.timeline-item {
    position: relative;
    padding-bottom: var(--spacing-xl);
}

.timeline-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
}

.timeline-item:last-child::after {
    display: none;
}

.timeline-marker {
    position: absolute;
    left: -60px;
    top: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
    border: 3px solid var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 4px 12px rgba(87, 245, 216, 0.2);
    z-index: 1;
}

.timeline-number {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
    font-family: "Arial", "繝｡繧､繝ｪ繧ｪ", sans-serif;
}

.timeline-content {
    padding-left: var(--spacing-lg);
}

.timeline-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 var(--spacing-sm);
    line-height: 1.4;
}

.timeline-content p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin: 0;
}

.data-assets {
    padding: var(--spacing-2xl) 0;
    background: var(--color-neutral);
}

.asset-card {
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    padding: 0;
}

.asset-card:last-child {
    margin-bottom: 0;
}

.asset-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.asset-number {
    font-size: 5rem;
    font-family: "Arial", "繝｡繧､繝ｪ繧ｪ", sans-serif;
    font-weight: 700;
    font-style: italic;
    color: #F5576C !important;
    line-height: 1;
    margin: 0;
    margin-bottom: -60px !important;
    position: relative;
    flex-shrink: 0;
}

.asset-number::before {
    content: '';
    position: relative;
    display: block;
    width: 3rem;
    height: 1px;
    background-color: #F5576C !important;
    margin-bottom: var(--spacing-xs);
}

.asset-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
    line-height: 1.4;
    text-align: left;
}

.asset-card p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin: 0;
    text-align: left;
}

.case-studies {
    padding: var(--spacing-2xl) 0;
    background: var(--color-surface);
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.case-card {
    background: var(--color-neutral);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    display: grid;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-soft);
}

.case-card header {
    display: grid;
    grid-template-columns: 72px 1fr;
    gap: var(--spacing-sm);
    align-items: center;
}

.case-card img {
    border-radius: var(--radius-sm);
    aspect-ratio: 1 / 1;
    object-fit: cover;
}

.case-tags {
    font-size: 12px;
    color: var(--color-text-muted);
}

.case-link {
    font-weight: 600;
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.case-link::after {
    content: '竊�';
}

.resources {
    padding: var(--spacing-2xl) 0;
    background: var(--color-neutral);
}

.resource-list {
    max-width: 900px;
    margin: 0 auto;
}

.resource-item {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--color-border);
    transition: background var(--transition);
}

.resource-item:first-child {
    padding-top: 0;
}

.resource-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.resource-item:hover {
    background: rgba(87, 116, 245, 0.02);
    margin: 0 calc(var(--spacing-lg) * -1);
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
    border-radius: var(--radius-md);
}

.resource-date {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
    font-family: "Arial", "繝｡繧､繝ｪ繧ｪ", sans-serif;
}

.date-year {
    font-size: 13px;
    color: var(--color-text-muted);
    font-weight: 600;
}

.date-month-day {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1;
}

.resource-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.resource-label {
    display: inline-flex;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(245, 87, 108, 0.12);
    color: var(--color-primary);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.18em;
    width: fit-content;
}

.resource-item h3 {
    margin: 0;
    font-size: 20px;
    font-weight: 700;
    line-height: 1.4;
}

.resource-item h3 a {
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition);
}

.resource-item h3 a:hover {
    color: var(--color-primary);
}

.resource-item p {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin: 0;
    font-size: 15px;
}

.pricing {
    padding: var(--spacing-2xl) 0;
    background: var(--color-surface);
}

.pricing-table-wrapper {
    overflow-x: auto;
    margin-top: var(--spacing-lg);
    -webkit-overflow-scrolling: touch;
}

.pricing-table {
    width: 100%;
    min-width: 800px;
    border-collapse: separate;
    border-spacing: 8px;
    background: transparent;
    border-radius: var(--radius-lg);
    overflow: visible;
}

.pricing-table thead {
    background: transparent;
}

.pricing-table th {
    padding: var(--spacing-md) var(--spacing-md);
    text-align: center;
    font-weight: 600;
    font-size: 14px;
    color: var(--color-text);
    position: relative;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
}

.pricing-table th:first-child {
    text-align: left;
    background: var(--color-background);
}

.pricing-table th.highlighted {
    background: linear-gradient(135deg, rgba(245, 87, 108, 0.1), rgba(245, 87, 108, 0.05));
    border: 2px solid var(--color-primary);
    box-shadow: 0 4px 12px rgba(245, 87, 108, 0.15);
}

.pricing-plan {
    text-align: center;
    vertical-align: top;
}

.pricing-plan .plan-name {
    display: block;
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.02em;
}

.pricing-plan .plan-price {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.pricing-plan.highlighted .plan-price {
    color: var(--color-primary-dark);
}

.pricing-plan .plan-badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 999px;
    background: var(--color-primary);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.15em;
    margin-top: var(--spacing-xs);
    text-transform: uppercase;
    box-shadow: 0 4px 12px rgba(245, 87, 108, 0.3);
}

.pricing-table tbody tr {
    transition: transform var(--transition);
}

.pricing-table tbody tr:hover td {
    transform: translateY(-1px);
}

.pricing-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: 14px;
    text-align: center;
    vertical-align: middle;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    transition: all var(--transition);
}

.pricing-table td:first-child {
    font-weight: 600;
    color: var(--color-text);
    background: var(--color-background);
    width: 28%;
    text-align: left;
    padding-left: var(--spacing-md);
}

.pricing-table td.highlighted {
    background: rgba(245, 87, 108, 0.08);
    color: var(--color-text);
    font-weight: 600;
    border: 2px solid var(--color-primary);
    box-shadow: 0 4px 12px rgba(245, 87, 108, 0.15);
}

.pricing-value {
    text-align: center;
    font-weight: 500;
}

.check-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    font-size: 18px;
    font-weight: 700;
}

.dash-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--color-text-muted);
    font-size: 20px;
    font-weight: 300;
    opacity: 0.4;
}

.pricing-action-row td {
    padding: var(--spacing-md);
    text-align: center;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
}

.pricing-action-row td:first-child {
    background: transparent;
    border: none;
    box-shadow: none;
}

.pricing-feature {
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.6;
}

.faq {
    padding: var(--spacing-2xl) 0;
    background: var(--color-neutral);
}

.faq-list {
    display: grid;
    gap: var(--spacing-sm);
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    background: transparent;
    text-align: left;
    font-weight: 600;
    color: var(--color-text);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question::after {
    content: '+';
    font-size: 20px;
    color: var(--color-text-muted);
    transition: transform var(--transition);
}

.faq-question[aria-expanded="true"]::after {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 var(--spacing-lg) var(--spacing-md);
    color: var(--color-text-secondary);
}

.cta {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(120deg, rgba(245, 87, 108, 0.08), rgba(102, 126, 234, 0.08));
}

.cta-wrapper {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-hover);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    align-items: start;
    padding: var(--spacing-lg);
}

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

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.cta-form {
    display: grid;
    gap: var(--spacing-sm);
}

.cta-form label {
    display: grid;
    gap: 6px;
    font-weight: 500;
}

.cta-form input,
.cta-form select,
.cta-form textarea {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    padding: 12px 14px;
    font-size: 14px;
    font-family: inherit;
}

.cta-form textarea {
    resize: vertical;
}

.form-note {
    font-size: 12px;
    color: var(--color-text-muted);
}

.site-footer {
    background: #111827;
    color: rgba(255, 255, 255, 0.76);
    padding-top: var(--spacing-xl);
}

.footer-inner {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: minmax(260px, 1fr) minmax(300px, 2fr);
}

.footer-brand .brand {
    color: #fff;
    font-size: 20px;
    display: inline-block;
    margin-bottom: var(--spacing-sm);
}

.footer-badges {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: var(--spacing-sm);
}

.footer-badges span {
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    font-size: 12px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-lg);
}

.footer-title {
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: #fff;
}

.footer-links ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: var(--spacing-xs);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.76);
    font-size: 14px;
}

.footer-bottom {
    margin-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md) 0;
    font-size: 13px;
}

.footer-bottom nav {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.6);
}

.fade-in-up {
    opacity: 0;
    transform: translateY(24px);
    animation: fadeInUp 0.8s ease forwards;
}

.scroll-reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 1024px) {
    .site-nav {
        position: fixed;
        inset: 72px 16px auto 16px;
        background: rgba(255, 255, 255, 0.98);
        border-radius: var(--radius-lg);
        border: 1px solid var(--color-border);
        box-shadow: var(--shadow-card);
        flex-direction: column;
        gap: var(--spacing-sm);
        padding: var(--spacing-md);
        opacity: 0;
        transform: translateY(-10px);
        pointer-events: none;
    }

    .site-nav.is-open {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }

    .nav-toggle {
        display: flex;
    }

    .solution-card,
    .tour-wrapper,
    .problem-detail,
    .hero-inner {
        grid-template-columns: 1fr;
    }

    .hero-inner {
        flex-direction: column;
    }
}

.mobile-only {
    display: none;
}

@media (max-width: 768px) {
    .mobile-only {
        display: block;
    }
    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero {
        padding: var(--spacing-lg) 0 var(--spacing-md);
    }

    .hero-copy {
        max-width: 100%;
    }

    .hero h1 {
        font-size: clamp(28px, 8vw, 40px);
        line-height: 1.3;
    }

    .hero .lead {
        font-size: 15px;
    }

    .section-header h2 {
        font-size: clamp(24px, 6vw, 32px);
        margin-bottom: var(--spacing-lg);
    }

    /* 蛟句挨縺ｮh2縺ｮmargin-bottom繧偵せ繝槭�繧ｵ繧､繧ｺ縺ｧ隱ｿ謨ｴ */
    #problem-heading,
    #overview-heading,
    #demo-heading,
    #workflow-heading,
    #data-heading,
    #case-heading,
    #resource-heading,
    #pricing-heading,
    #faq-heading,
    #cta-heading {
        margin-bottom: var(--spacing-lg);
    }

    .section-header h2::before {
        height: 20px;
        bottom: -28px;
    }

    .problem-tags {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .problem-chip {
        width: 100%;
        padding: var(--spacing-sm);
        font-size: 14px;
    }

    .problem-detail {
        flex-direction: column;
        gap: var(--spacing-md);
        grid-template-columns: 1fr;
    }

    .problem-detail figure {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
    }

    .problem-detail img {
        width: 100%;
        height: auto;
        object-fit: contain;
        max-width: 100%;
    }

    .solution-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .solution-card {
        grid-template-columns: 1fr;
    }

    .solution-card figure {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
    }

    .solution-card img {
        width: 100%;
        height: auto;
        object-fit: contain;
        max-width: 100%;
    }

    .tour-wrapper {
        flex-direction: column;
    }

    .tour-media video {
        width: 100%;
        height: auto;
    }

    .workflow-timeline {
        padding-left: 0;
    }

    .workflow-timeline::before {
        left: 20px;
    }

    .timeline-item {
        padding-left: var(--spacing-lg);
    }

    .timeline-marker {
        left: 0;
    }

    .asset-card {
        margin-bottom: var(--spacing-md);
    }

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

    .resource-list {
        gap: var(--spacing-md);
        max-width: 100%;
    }

    .resource-item {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
        padding: var(--spacing-md) 0;
        border-top: 1px solid var(--color-border);
        border-bottom: 1px solid var(--color-border);
        margin-bottom: 0;
    }

    .resource-item:first-child {
        padding-top: var(--spacing-md);
        border-top: 1px solid var(--color-border);
    }

    .resource-item:last-child {
        border-bottom: 1px solid var(--color-border);
        padding-bottom: var(--spacing-md);
        margin-bottom: 0;
    }

    .resource-item:hover {
        background: rgba(245, 87, 108, 0.02);
        margin: 0;
        padding: var(--spacing-md) 0;
    }

    .resource-date {
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-xs);
    }

    .date-year {
        font-size: 12px;
    }

    .date-month-day {
        font-size: 18px;
    }

    .resource-content {
        gap: var(--spacing-xs);
    }

    .resource-item h3 {
        font-size: 18px;
        margin-top: var(--spacing-xs);
        margin-bottom: var(--spacing-xs);
    }

    .resource-item p {
        font-size: 14px;
        line-height: 1.6;
    }

    .pricing-table-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .pricing-table {
        min-width: 600px;
        font-size: 13px;
    }

    .pricing-table th,
    .pricing-table td {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .plan-name {
        font-size: 16px;
    }

    .plan-price {
        font-size: 12px;
    }

    .cta-wrapper {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .cta-form {
        width: 100%;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

@media (max-width: 640px) {
    :root {
        --spacing-xl: 40px;
        --spacing-2xl: 60px;
        --container-width: 100%;
        font-size: 14px;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .site-header .container {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .brand {
        font-size: 16px;
    }

    .hero {
        padding: var(--spacing-md) 0;
    }

    .hero h1 {
        font-size: 24px;
        line-height: 1.4;
        margin-bottom: var(--spacing-sm);
    }

    .hero .lead {
        font-size: 14px;
        line-height: 1.7;
        margin-bottom: var(--spacing-md);
    }

    .hero-actions,
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
    }

    .btn,
    .btn-large {
        width: 100%;
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 14px;
    }

    .hero-badges {
        padding: var(--spacing-md) 0;
    }

    .badge-logos {
        gap: var(--spacing-md);
    }

    .badge-logos img {
        width: 100px;
    }

    .section-header {
        margin-bottom: var(--spacing-md);
    }

    .section-header h2 {
        font-size: 22px;
        margin-bottom: 50px;
    }

    #data-heading {
        white-space: normal;
        word-break: keep-all;
        overflow-wrap: break-word;
        line-height: 1.5;
        margin-bottom: 50px;
    }

    /* 蛟句挨縺ｮh2縺ｮmargin-bottom繧貞ｰ上＆縺�せ繝槭�繧ｵ繧､繧ｺ縺ｧ隱ｿ謨ｴ */
    #problem-heading,
    #overview-heading,
    #demo-heading,
    #workflow-heading,
    #data-heading,
    #case-heading,
    #resource-heading,
    #pricing-heading,
    #faq-heading,
    #cta-heading {
        margin-bottom: 50px;
    }

    .tour-sidebar h2,
    .cta-text h2 {
        margin-bottom: 50px;
    }

    .mobile-only {
        display: block;
    }

    .section-header h2::before {
        height: 16px;
        bottom: -24px;
    }

    .section-lead {
        font-size: 14px;
        line-height: 1.7;
    }

    .problem-map,
    .platform-overview,
    .workflow,
    .data-assets,
    .case-studies,
    .resources,
    .pricing,
    .faq,
    .cta {
        padding: var(--spacing-lg) 0;
    }

    .problem-detail,
    .solution-card,
    .tour-sidebar,
    .tour-media,
    .cta-wrapper {
        padding: var(--spacing-md);
    }

    .problem-detail figure {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
    }

    .problem-detail img {
        width: 100%;
        height: auto;
        object-fit: contain;
        max-width: 100%;
    }

    .solution-card figure {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
    }

    .solution-card img {
        width: 100%;
        height: auto;
        object-fit: contain;
        max-width: 100%;
    }

    .problem-detail h3,
    .solution-card h3,
    .asset-card h3 {
        font-size: 18px;
        margin-bottom: var(--spacing-sm);
    }

    .problem-detail ul,
    .solution-card ul {
        font-size: 14px;
        padding-left: var(--spacing-md);
    }

    .workflow-timeline {
        max-width: 100%;
    }

    .timeline-content h3 {
        font-size: 16px;
        margin-bottom: var(--spacing-xs);
    }

    .timeline-content p {
        font-size: 14px;
        line-height: 1.7;
    }

    .asset-number {
        font-size: 3rem;
        margin-bottom: -40px !important;
    }

    .asset-number::before {
        width: 2rem;
    }

    .case-card {
        padding: var(--spacing-md);
    }

    .case-card h3 {
        font-size: 16px;
    }

    .case-card p {
        font-size: 14px;
    }

    .resource-item {
        padding: var(--spacing-md) 0;
        margin-bottom: 0;
        border-top: 1px solid var(--color-border);
        border-bottom: 1px solid var(--color-border);
    }

    .resource-item:first-child {
        border-top: 1px solid var(--color-border);
    }

    .resource-item:last-child {
        border-bottom: 1px solid var(--color-border);
        margin-bottom: 0;
    }

    .resource-item:hover {
        background: rgba(245, 87, 108, 0.02);
        margin: 0;
        padding: var(--spacing-md) 0;
    }

    .resource-date {
        margin-bottom: var(--spacing-xs);
    }

    .date-year {
        font-size: 11px;
    }

    .date-month-day {
        font-size: 16px;
    }

    .resource-label {
        font-size: 10px;
        padding: 3px 8px;
        margin-bottom: var(--spacing-xs);
    }

    .resource-item h3 {
        font-size: 16px;
        margin-top: var(--spacing-xs);
        margin-bottom: var(--spacing-xs);
        line-height: 1.4;
    }

    .resource-item p {
        font-size: 13px;
        line-height: 1.6;
        margin-top: var(--spacing-xs);
    }

    .pricing-table {
        min-width: 500px;
        font-size: 12px;
    }

    .pricing-table th,
    .pricing-table td {
        padding: 8px;
    }

    .plan-name {
        font-size: 14px;
    }

    .plan-price {
        font-size: 11px;
    }

    .faq-question {
        font-size: 14px;
        padding: var(--spacing-sm);
    }

    .faq-answer {
        font-size: 14px;
        padding: var(--spacing-sm);
    }

    .cta-form label {
        font-size: 14px;
    }

    .cta-form input,
    .cta-form select,
    .cta-form textarea {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        font-size: 14px;
        padding: var(--spacing-sm);
    }

    .footer-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

    .footer-bottom nav {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 16px;
        --spacing-lg: 32px;
        --spacing-xl: 32px;
        --spacing-2xl: 48px;
    }

    .hero h1 {
        font-size: 22px;
    }

    .section-header h2 {
        font-size: 20px;
    }

    .pricing-table {
        min-width: 450px;
        font-size: 11px;
    }

    .pricing-table th,
    .pricing-table td {
        padding: 6px;
    }
}