:root {
  --bg: #f5f7ff;
  --white: #ffffff;
  --text: #111827;
  --muted: #64748b;
  --line: rgba(15, 23, 42, 0.08);
  --primary: #4f46e5;
  --primary-2: #3b82f6;
  --accent: #8b5cf6;
  --dark: #0f172a;
  --shadow: 0 20px 60px rgba(79, 70, 229, 0.12);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(99, 102, 241, 0.08), transparent 25%),
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.08), transparent 20%),
    var(--bg);
  line-height: 1.7;
}

img,
video {
  display: block;
  max-width: 100%;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

.container {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
}

.section {
  padding: 96px 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(8px);
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-heading h2 {
  margin: 8px 0 16px;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.2;
}

.section-heading p {
  margin: 0;
  color: var(--muted);
}

.section-label,
.eyebrow {
  display: inline-block;
  margin: 0;
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(245, 247, 255, 0.78);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 24px;
}

.logo img {
  width: 180px;
  height: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav a {
  font-weight: 700;
  font-size: 0.95rem;
  color: #334155;
  transition: 0.2s ease;
}

.nav a:hover {
  color: var(--primary);
}

.nav-cta {
  padding: 12px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff !important;
  box-shadow: 0 10px 25px rgba(79, 70, 229, 0.25);
}

.menu-toggle {
  display: none;
  width: 52px;
  height: 52px;
  border: none;
  border-radius: 14px;
  background: #fff;
  box-shadow: var(--shadow);
  cursor: pointer;
  padding: 0;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #1f2937;
  margin: 5px auto;
  transition: 0.25s ease;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 84px 0 72px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(139, 92, 246, 0.18), transparent 22%),
    radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.16), transparent 20%),
    radial-gradient(circle at 50% 70%, rgba(79, 70, 229, 0.14), transparent 26%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 42px;
  align-items: center;
}

.hero-text h1 {
  margin: 14px 0 20px;
  font-size: clamp(2.5rem, 5vw, 4.6rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.hero-text h1 span {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  max-width: 640px;
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 1.04rem;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 24px;
  border: none;
  border-radius: 999px;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 16px 30px rgba(79, 70, 229, 0.25);
}

.btn-secondary {
  color: var(--primary);
  background: #fff;
  border: 1px solid rgba(79, 70, 229, 0.18);
}

.btn-light {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 16px 30px rgba(15, 23, 42, 0.15);
}

.btn-full {
  width: 100%;
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.hero-points li {
  padding: 16px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 0.94rem;
  font-weight: 700;
  color: #334155;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-card {
  width: min(100%, 500px);
  padding: 18px;
  border-radius: 36px;
  background: linear-gradient(180deg, rgba(255,255,255,0.9), rgba(255,255,255,0.75));
  border: 1px solid rgba(255,255,255,0.9);
  box-shadow: 0 40px 100px rgba(79, 70, 229, 0.18);
}

.hero-video-card {
  padding: 14px;
}

.hero-video-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 24px;
  background: transparent;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.12);
}

.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 60% center;
  border-radius: 0;
  background: transparent;
}

.intro-strip {
  margin-top: -12px;
  padding-bottom: 24px;
}

.strip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.strip-item {
  padding: 22px 24px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 16px 35px rgba(15, 23, 42, 0.05);
}

.strip-item strong {
  display: block;
  margin-bottom: 6px;
  color: var(--primary);
  font-size: 1.3rem;
}

.strip-item p {
  margin: 0;
  font-weight: 700;
}

.feature-grid,
.usage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-card,
.usage-card,
.example-card {
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 35px rgba(15, 23, 42, 0.05);
}

.feature-card .icon {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(79,70,229,0.12), rgba(59,130,246,0.12));
  font-size: 1.5rem;
}

.feature-card h3,
.usage-card h3,
.product-content h3,
.option-card h3,
.summary-card h3,
.order-card h3,
.example-card h3,
.case-card-body h3 {
  margin: 0 0 10px;
  font-size: 1.22rem;
}

.feature-card p,
.usage-card p,
.product-content p,
.example-card p {
  margin: 0;
  color: var(--muted);
}

.product-grid {
  display: grid;
  gap: 26px;
}

.product-card {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 28px;
  align-items: center;
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.06);
}

.product-image {
  overflow: hidden;
  border-radius: 22px;
}

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

.product-content ul,
.option-card ul,
.example-card ul {
  margin: 18px 0 0;
  padding-left: 18px;
  color: #334155;
}

.product-content li + li,
.option-card li + li,
.example-card li + li {
  margin-top: 8px;
}

.price-badge {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  margin-bottom: 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(79,70,229,0.12), rgba(59,130,246,0.12));
  color: var(--primary);
  font-weight: 800;
}

.pricing-table-wrap {
  margin-bottom: 26px;
}

.pricing-table {
  display: grid;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.06);
}

.pricing-row {
  display: grid;
  grid-template-columns: 1.2fr 0.6fr 1.6fr;
  gap: 20px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--line);
}

.pricing-row:last-child {
  border-bottom: none;
}

.pricing-head {
  background: linear-gradient(135deg, rgba(79,70,229,0.08), rgba(59,130,246,0.08));
  font-weight: 800;
}

.option-cards,
.example-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.example-grid {
  grid-template-columns: repeat(2, 1fr);
}

.option-card {
  padding: 24px;
  border-radius: 22px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 16px 35px rgba(15, 23, 42, 0.05);
}

.example-lead {
  font-weight: 800;
  color: var(--primary) !important;
  margin-bottom: 10px !important;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.case-card {
  display: block;
  overflow: hidden;
  border-radius: 24px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.06);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 46px rgba(15, 23, 42, 0.12);
}

.case-card-image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #f8fafc;
}

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

.case-card-body {
  padding: 22px;
}

.case-role {
  margin: 0 0 8px;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--primary);
}

.case-card-body p {
  margin: 0;
  color: var(--muted);
}

.case-link {
  display: inline-block;
  margin-top: 16px;
  font-weight: 800;
  color: var(--primary);
}

.usage-showcase {
  margin-top: 44px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
}

.usage-text {
  padding: 34px;
  background: #fff;
  border-radius: 28px;
  border: 1px solid var(--line);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.06);
}

.usage-text h3 {
  margin: 0 0 14px;
  font-size: 2rem;
  line-height: 1.2;
}

.usage-text p {
  margin: 0 0 22px;
  color: var(--muted);
}

.usage-image img {
  border-radius: 28px;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.gallery-item {
  padding: 0;
  border: none;
  border-radius: 22px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 18px 38px rgba(15, 23, 42, 0.08);
  cursor: pointer;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 46px rgba(15, 23, 42, 0.12);
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.cta-section {
  padding-top: 24px;
}

.cta-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  padding: 42px;
  border-radius: 32px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  box-shadow: 0 26px 55px rgba(79, 70, 229, 0.28);
}

.cta-box h2 {
  margin: 8px 0 12px;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.2;
}

.cta-box p {
  margin: 0;
  max-width: 760px;
  color: rgba(255, 255, 255, 0.9);
}

.cta-box .section-label {
  color: rgba(255, 255, 255, 0.78);
}

.order-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: start;
}

.order-form,
.summary-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 32px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.06);
}

.order-card {
  margin-top: 24px;
  padding: 24px;
  border-radius: 22px;
  background: #f8fafc;
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.form-group {
  display: grid;
  gap: 8px;
}

.full-width {
  margin-top: 18px;
}

.form-group label {
  font-weight: 700;
  font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: #fff;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: rgba(79, 70, 229, 0.55);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.12);
}

.hidden {
  display: none !important;
}

.field-note {
  margin: 6px 0 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.field-note.warning {
  color: #b45309;
  font-weight: 700;
}

.popstand-box {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 18px;
  align-items: center;
  padding: 16px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--line);
}

.popstand-image-wrap {
  overflow: hidden;
  border-radius: 16px;
  background: #f8fafc;
}

.popstand-image {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.popstand-title {
  margin: 0 0 6px;
  font-weight: 800;
}

.popstand-price {
  margin: 0 0 14px;
  color: var(--primary);
  font-weight: 800;
}

.estimate-block {
  margin-top: 22px;
  padding: 22px;
  border-radius: 20px;
  background: #fff;
  border: 1px dashed rgba(79, 70, 229, 0.25);
}

.estimate-block h4 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.estimate-block p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 0.95rem;
}

.check-grid {
  display: grid;
  gap: 12px;
}

.check-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 16px;
  cursor: pointer;
}

.check-item input {
  width: 18px;
  height: 18px;
}

.summary-card {
  position: sticky;
  top: 96px;
}

.summary-line,
.summary-total,
.summary-estimate {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.summary-line span,
.summary-estimate span {
  color: var(--muted);
}

.summary-line strong,
.summary-estimate strong {
  text-align: right;
}

.summary-total {
  margin-top: 6px;
  padding-top: 18px;
  border-bottom: 1px solid var(--line);
  font-size: 1.15rem;
}

.summary-total strong {
  color: var(--primary);
  font-size: 1.6rem;
}

.summary-estimate strong {
  color: #b45309;
  font-size: 0.96rem;
}

.summary-note {
  margin: 12px 0 20px;
  color: var(--muted);
  font-size: 0.92rem;
}

.summary-buttons {
  display: grid;
  gap: 12px;
}

.order-preview {
  display: none;
  margin-top: 18px;
  padding: 18px;
  border-radius: 18px;
  background: #eef2ff;
  color: #312e81;
  border: 1px solid rgba(79,70,229,0.14);
  white-space: pre-line;
  font-size: 0.95rem;
}

.coupon-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
}

.coupon-button {
  min-width: 120px;
  white-space: nowrap;
}

.coupon-help {
  margin: 8px 0 0;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--muted);
}

.coupon-help.is-valid {
  color: #059669;
}

.coupon-help.is-invalid {
  color: #dc2626;
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 0 20px;
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.04);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 0;
  font-weight: 800;
  position: relative;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 22px;
  font-size: 1.4rem;
  color: var(--primary);
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item p {
  margin: 0 0 20px;
  color: var(--muted);
}

.site-footer {
  padding: 36px 0 18px;
  background: #0f172a;
  color: #fff;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
}

.footer-brand img {
  width: 170px;
  margin-bottom: 12px;
}

.footer-brand p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.84);
  font-weight: 700;
}

.copyright {
  margin: 24px 0 0;
  padding-top: 18px;
  text-align: center;
  color: rgba(255, 255, 255, 0.55);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.modal {
  position: fixed;
  inset: 0;
  display: none;
  z-index: 2000;
}

.modal.is-open {
  display: block;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 23, 0.72);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  width: min(92vw, 980px);
  margin: 4vh auto;
  background: #fff;
  border-radius: 26px;
  padding: 20px;
  z-index: 1;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.28);
}

.modal-content img {
  width: 100%;
  max-height: 76vh;
  object-fit: contain;
  border-radius: 18px;
  background: #f8fafc;
}

.modal-content p {
  margin: 14px 4px 4px;
  font-weight: 800;
  color: #334155;
}

.modal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.9);
  color: #fff;
  font-size: 1.6rem;
  cursor: pointer;
}

@media (max-width: 1100px) {
  .hero-inner,
  .usage-showcase,
  .product-card,
  .order-layout {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .usage-grid,
  .option-cards,
  .example-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-points {
    grid-template-columns: 1fr;
  }

  .cta-box,
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .summary-card {
    position: static;
  }
}

@media (max-width: 820px) {
  .menu-toggle {
    display: inline-block;
  }

  .nav {
    position: absolute;
    top: calc(100% + 10px);
    right: 16px;
    left: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 16px;
    background: rgba(255,255,255,0.96);
    border: 1px solid var(--line);
    border-radius: 22px;
    box-shadow: 0 18px 50px rgba(15, 23, 42, 0.12);
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: 12px 14px;
    border-radius: 14px;
    background: #f8fafc;
  }

  .strip-grid,
  .feature-grid,
  .usage-grid,
  .gallery-grid,
  .option-cards,
  .form-grid,
  .example-grid,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .pricing-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .section {
    padding: 76px 0;
  }

  .hero {
    padding-top: 56px;
  }

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

  .logo img {
    width: 156px;
  }

  .order-form,
  .summary-card,
  .usage-text,
  .product-card,
  .cta-box {
    padding: 24px;
  }

  .popstand-box {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 20px, var(--container));
  }

  .hero-text h1 {
    font-size: 2.1rem;
  }

  .section-heading h2,
  .cta-box h2 {
    font-size: 1.8rem;
  }

  .btn {
    width: 100%;
  }

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

  .coupon-row {
    grid-template-columns: 1fr;
  }

  .coupon-button {
    width: 100%;
  }
}