:root {
  --color-primary: #0F6BFF;
  --color-primary-dark: #0B3F91;
  --color-bg: #FFFFFF;
  --color-bg-soft: #F5F9FF;
  --color-bg-blue: #EEF6FF;
  --color-bg-gray: #F8FAFC;
  --color-text: #1F2937;
  --color-text-muted: #6B7280;
  --color-note: #4B5563;
  --color-border: #E5EAF0;
  --radius-card: 18px;
  --radius-button: 12px;
  --shadow-soft: 0 12px 30px rgba(15, 107, 255, 0.08);
  --content-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(15, 107, 255, 0.28);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
}

.container {
  width: min(100% - 40px, var(--content-width));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  min-width: 0;
}

.brand-logo {
  display: block;
  width: 230px;
  max-width: 42vw;
  height: auto;
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 20px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--color-text-muted);
  font-size: 15px;
  white-space: nowrap;
}

.app-select {
  min-height: 36px;
  padding: 0 36px 0 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-button);
  background: var(--color-bg);
  color: var(--color-text);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
}

.app-select:focus {
  border-color: var(--color-primary);
  outline: 3px solid rgba(15, 107, 255, 0.18);
  outline-offset: 2px;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  padding: 3px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-bg);
}

.language-switch a,
.language-switch span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

.language-switch span {
  background: var(--color-primary);
  color: #FFFFFF;
}

.language-switch a {
  color: var(--color-text-muted);
}

.hero {
  background: linear-gradient(180deg, var(--color-bg-soft) 0%, #FFFFFF 100%);
  border-bottom: 1px solid var(--color-border);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  align-items: center;
  gap: 48px;
  padding: 72px 0 56px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--color-primary);
  font-size: 15px;
  font-weight: 800;
}

h1 {
  margin: 0;
  color: var(--color-primary-dark);
  font-size: clamp(38px, 5vw, 56px);
  line-height: 1.12;
  letter-spacing: 0;
}

.lead {
  max-width: 760px;
  margin: 20px 0 0;
  color: var(--color-text-muted);
  font-size: 18px;
}

.hero-logo-card {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 240px;
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow-soft);
}

.hero-logo {
  width: 190px;
  max-width: 100%;
  height: auto;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-button);
  font-size: 15px;
  font-weight: 700;
}

.button-primary {
  background: var(--color-primary);
  color: #FFFFFF;
}

.button-primary:hover {
  background: var(--color-primary-dark);
  text-decoration: none;
}

.button-secondary {
  border-color: var(--color-border);
  background: var(--color-bg);
  color: var(--color-primary-dark);
}

.button-secondary:hover {
  border-color: #CFE3FF;
  background: var(--color-bg-blue);
  text-decoration: none;
}

.main-content {
  padding: 48px 0 72px;
}

.section {
  padding: 56px 0;
}

.section-soft {
  background: var(--color-bg-soft);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-header {
  max-width: 760px;
  margin-bottom: 28px;
}

.section-header h2 {
  margin: 0 0 12px;
  color: var(--color-primary-dark);
  font-size: clamp(28px, 4vw, 36px);
  line-height: 1.25;
}

.section-header p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 17px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 36px;
}

.summary-card {
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-bg);
  box-shadow: var(--shadow-soft);
}

.summary-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  margin-bottom: 14px;
  border-radius: 999px;
  background: var(--color-bg-blue);
  color: var(--color-primary-dark);
  font-size: 19px;
  font-weight: 800;
}

.summary-card h2 {
  margin: 0 0 8px;
  color: var(--color-text);
  font-size: 20px;
  line-height: 1.35;
}

.summary-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 15px;
}

.product-card {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr) auto;
  align-items: center;
  gap: 22px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-bg);
  box-shadow: var(--shadow-soft);
}

.product-logo {
  width: 92px;
  height: 92px;
  object-fit: contain;
}

.product-card h3,
.support-card h3 {
  margin: 0 0 8px;
  color: var(--color-text);
  font-size: 22px;
  line-height: 1.35;
}

.product-card p,
.support-card p {
  margin: 0;
  color: var(--color-text-muted);
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.support-card {
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-bg);
  box-shadow: var(--shadow-soft);
}

.support-card .button {
  margin-top: 18px;
}

.policy-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.policy-nav {
  position: sticky;
  top: 96px;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-bg-gray);
}

.policy-nav-title {
  margin: 0 0 12px;
  color: var(--color-primary-dark);
  font-size: 15px;
  font-weight: 800;
}

.policy-nav a {
  display: block;
  padding: 7px 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

.policy-card {
  padding: 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-bg);
  box-shadow: var(--shadow-soft);
}

.meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 30px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 14px;
}

.meta strong {
  display: block;
  color: var(--color-text);
  font-weight: 800;
}

.policy-card h2 {
  margin: 36px 0 12px;
  color: var(--color-primary-dark);
  font-size: 28px;
  line-height: 1.35;
  letter-spacing: 0;
}

.policy-card h2:first-of-type {
  margin-top: 0;
}

.policy-card p {
  margin: 0 0 14px;
}

.policy-card ul {
  margin: 0 0 18px;
  padding-left: 1.35em;
}

.policy-card li {
  margin: 4px 0;
}

.note-box {
  margin: 28px 0 0;
  padding: 20px 22px;
  border: 1px solid #CFE3FF;
  border-radius: 16px;
  background: var(--color-bg-blue);
  color: var(--color-note);
}

.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-gray);
  color: var(--color-text-muted);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  padding: 28px 0;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-logo {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  font-size: 14px;
}

.app-hero {
  min-height: min(760px, calc(100vh - 72px));
  background-position: center;
  background-size: cover;
  border-bottom: 1px solid var(--color-border);
}

.app-hero-en {
  background-image: url("./activememo/screenshot-keep-active-en.webp");
}

.app-hero-ja {
  background-image: url("./activememo/screenshot-keep-active-ja.webp");
}

.app-hero-overlay {
  min-height: inherit;
  display: flex;
  align-items: center;
  background: linear-gradient(90deg, rgba(245, 249, 255, 0.98) 0%, rgba(245, 249, 255, 0.9) 42%, rgba(245, 249, 255, 0.18) 100%);
}

.app-hero-content {
  padding: 88px 0 110px;
}

.app-hero-content h1,
.app-intro h2,
.app-two-column h2,
.app-cta h2 {
  max-width: 720px;
  margin: 0;
  color: var(--color-primary-dark);
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.12;
  letter-spacing: 0;
}

.app-hero-content .lead {
  max-width: 620px;
  color: #334155;
}

.app-section {
  background: #FFFFFF;
}

.app-intro {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  align-items: center;
  gap: 34px;
  margin-bottom: 34px;
}

.app-boxart {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 18px 44px rgba(15, 63, 145, 0.14);
}

.app-intro h2,
.app-two-column h2,
.app-cta h2 {
  font-size: clamp(28px, 4vw, 42px);
}

.app-intro p,
.app-two-column p,
.app-cta p,
.screenshot-row p {
  color: var(--color-text-muted);
  font-size: 17px;
}

.app-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.app-feature {
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
  box-shadow: var(--shadow-soft);
}

.app-feature span {
  display: inline-flex;
  margin-bottom: 18px;
  color: #0F766E;
  font-size: 14px;
  font-weight: 900;
}

.app-feature h3,
.screenshot-row h3 {
  margin: 0 0 10px;
  color: var(--color-primary-dark);
  font-size: 24px;
  line-height: 1.28;
}

.app-feature p,
.screenshot-row p {
  margin: 0;
}

.screenshot-showcase {
  display: grid;
  gap: 28px;
}

.screenshot-row {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  align-items: center;
  gap: 32px;
}

.screenshot-row-reverse {
  grid-template-columns: minmax(280px, 0.65fr) minmax(0, 1.35fr);
}

.screenshot-row-reverse img {
  order: 2;
}

.screenshot-row-reverse div {
  order: 1;
}

.screenshot-row img,
.app-cta img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid #DCE8F7;
  border-radius: 8px;
  box-shadow: 0 18px 44px rgba(15, 63, 145, 0.12);
}

.app-two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 42px;
}

.pricing-block {
  margin-top: 42px;
  padding-top: 38px;
  border-top: 1px solid var(--color-border);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.pricing-card {
  padding: 26px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #FFFFFF;
  box-shadow: var(--shadow-soft);
}

.pricing-kicker {
  margin: 0 0 8px;
  color: #0F766E;
  font-size: 14px;
  font-weight: 900;
}

.pricing-card h3 {
  margin: 0;
  color: var(--color-primary-dark);
  font-size: 22px;
  line-height: 1.3;
}

.pricing-price {
  margin: 14px 0 8px;
  color: var(--color-text);
  font-size: clamp(32px, 4vw, 42px);
  font-weight: 900;
  line-height: 1.1;
}

.pricing-note {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 15px;
}

.app-cta {
  padding: 64px 0;
  background: linear-gradient(135deg, #EAF4FF 0%, #FFFFFF 54%, #ECFDF5 100%);
  border-top: 1px solid var(--color-border);
}

.app-cta-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  align-items: center;
  gap: 34px;
}

@media (max-width: 900px) {
  .header-inner,
  .header-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-inner {
    padding: 16px 0;
  }

  .header-actions {
    gap: 14px;
  }

  .nav {
    flex-wrap: wrap;
    gap: 12px 16px;
  }

  .product-card,
  .support-grid {
    grid-template-columns: 1fr;
  }

  .product-card {
    align-items: start;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    padding: 48px 0;
  }

  .hero-logo-card {
    min-height: 180px;
  }

  .summary-grid,
  .policy-layout {
    grid-template-columns: 1fr;
  }

  .app-hero {
    min-height: auto;
  }

  .app-hero-overlay {
    background: linear-gradient(180deg, rgba(245, 249, 255, 0.98) 0%, rgba(245, 249, 255, 0.94) 62%, rgba(245, 249, 255, 0.76) 100%);
  }

  .app-hero-content {
    padding: 56px 0 220px;
  }

  .app-intro,
  .app-feature-grid,
  .screenshot-row,
  .screenshot-row-reverse,
  .app-two-column,
  .pricing-grid,
  .app-cta-inner {
    grid-template-columns: 1fr;
  }

  .app-intro {
    align-items: start;
  }

  .app-boxart {
    max-width: 220px;
  }

  .screenshot-row-reverse img,
  .screenshot-row-reverse div {
    order: initial;
  }

  .policy-nav {
    position: static;
  }

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

  .footer-links {
    justify-content: flex-start;
    flex-wrap: wrap;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 28px, var(--content-width));
  }

  .brand-logo {
    width: 210px;
    max-width: 100%;
  }

  .policy-card {
    padding: 24px;
  }

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

  .summary-card {
    padding: 20px;
  }

  .app-hero-content {
    padding-bottom: 160px;
  }

  .app-feature,
  .screenshot-row {
    gap: 18px;
  }
}