:root {
  --color-primary: #37474f;
  --color-primary-dark: #263238;
  --color-accent: #455a64;
  --color-text: #37474f;
  --color-muted: #607d8b;
  --color-bg: #fafafa;
  --color-card: #ffffff;
  --color-border: #eceff1;
  --color-popular: #37474f;
  --radius: 8px;
  --max-width: 1100px;
  --header-height: 64px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-accent);
}

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 16px;
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}

.brand img.logo-icon {
  width: 32px;
  height: 32px;
}

.brand img.logo-text {
  height: 28px;
  width: auto;
}

.brand-fallback {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 0;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-toggle:hover,
.nav-toggle[aria-expanded="true"] {
  border-color: var(--color-accent);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  text-decoration: none;
  font-size: 0.95rem;
}

.nav-links a.nav-text {
  color: var(--color-primary);
  padding: 8px 10px;
  font-weight: 500;
}

.nav-links a.nav-text:hover,
.nav-links a.nav-text[aria-current="page"] {
  color: var(--color-primary-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  min-height: 44px;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background: #eceff1;
}

.btn-light {
  background: #fff;
  color: var(--color-primary);
}

.site-main {
  flex: 1;
}

.hero {
  background: linear-gradient(180deg, #eceff1 0%, var(--color-bg) 100%);
  padding: 56px 16px 40px;
  text-align: center;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--color-primary-dark);
}

.hero .lede {
  margin: 0 auto 28px;
  max-width: 720px;
  font-size: 1.1rem;
  color: var(--color-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 16px;
}

.section h2 {
  margin: 0 0 12px;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  text-align: center;
  color: var(--color-primary-dark);
}

.section .subtitle {
  text-align: center;
  color: var(--color-muted);
  margin: 0 0 32px;
  font-size: 1.1rem;
}

.product-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
  max-width: 640px;
  margin: 0 auto 32px;
  text-align: center;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.product-card h3 {
  margin: 0 0 8px;
  font-size: 1.4rem;
}

.screenshots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.screenshots figure {
  margin: 0;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.screenshots img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.screenshot-zoom {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  cursor: zoom-in;
  font: inherit;
}

.screenshot-zoom:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -4px;
}

.screenshots figure:hover {
  border-color: var(--color-accent);
}

.lightbox[open] {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  margin: 0;
  padding: 24px;
  border: 0;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox::backdrop {
  background: rgba(38, 50, 56, 0.82);
}

.lightbox-frame {
  position: relative;
  max-width: 100%;
}

.lightbox img {
  display: block;
  width: auto;
  height: auto;
  max-width: min(1100px, 92vw);
  max-height: 86vh;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(55, 71, 79, 0.15);
}

.lightbox-close {
  position: absolute;
  top: 8px;
  right: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--color-primary);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(55, 71, 79, 0.15);
}

.lightbox-close:hover {
  color: var(--color-primary-dark);
  border-color: var(--color-accent);
}

.cta-box {
  background: #eceff1;
  border-radius: 12px;
  padding: 32px 24px;
  text-align: center;
}

.cta-box h2 {
  margin-top: 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  align-items: stretch;
}

.price-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.price-card.popular {
  border: 2px solid var(--color-popular);
  box-shadow: 0 4px 16px rgba(55, 71, 79, 0.15);
}

.price-card h3 {
  margin: 0 0 8px;
}

.price-card .price {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0;
}

.price-card .period {
  color: var(--color-muted);
  margin: 0 0 16px;
}

.price-card ul {
  margin: 0 0 24px;
  padding-left: 1.1rem;
  flex: 1;
}

.price-card .btn {
  width: 100%;
}

.support {
  text-align: center;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.feature-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
}

.feature-item h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
  color: var(--color-primary-dark);
}

.feature-item p {
  margin: 0;
  color: var(--color-muted);
}

.usecase-preview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.usecase-preview article {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
}

.usecase-preview h3 {
  margin: 0 0 8px;
}

.usecase-preview p {
  margin: 0;
  color: var(--color-muted);
}

.section-link {
  text-align: center;
  margin: 28px 0 0;
}

.section-link a {
  font-weight: 600;
  text-decoration: none;
}

.section-link a:hover {
  text-decoration: underline;
}

.steps-list {
  max-width: 720px;
  margin: 0 auto;
  padding-left: 1.25rem;
  color: var(--color-muted);
}

.steps-list li {
  margin-bottom: 12px;
}

.steps-list strong {
  color: var(--color-primary-dark);
}

.content-prose {
  max-width: 800px;
}

.usecase-block {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

.usecase-block h2 {
  text-align: left;
  font-size: 1.35rem;
  margin: 0 0 12px;
}

.usecase-block p {
  margin: 0 0 12px;
  color: var(--color-muted);
}

.usecase-block ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--color-muted);
}

.faq-list {
  max-width: 800px;
}

.faq-list details {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 12px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-primary-dark);
}

.faq-list details[open] summary {
  margin-bottom: 10px;
}

.faq-list details p {
  margin: 0;
  color: var(--color-muted);
}

.legal-article {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 16px 64px;
}

.legal-article h1 {
  margin: 0 0 8px;
  font-size: clamp(1.8rem, 3vw, 2.25rem);
}

.legal-article .updated {
  color: var(--color-muted);
  font-style: italic;
  margin: 0 0 32px;
}

.legal-article section {
  background: #fafafa;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 16px;
}

.legal-article h2 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.legal-article p {
  margin: 0;
  color: #455a64;
}

.site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.9);
  padding: 32px 16px;
  text-align: center;
  margin-top: auto;
}

.site-footer p {
  margin: 0 0 8px;
}

.social {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  margin: 16px 0;
}

.social a {
  display: inline-flex;
  width: 40px;
  height: 40px;
}

.social img {
  width: 40px;
  height: 40px;
  filter: brightness(0) invert(1);
}

.youtube-panel {
  padding-top: 8px;
}

.youtube-card {
  max-width: 640px;
  margin: 0 auto;
  padding: 32px 24px;
  text-align: center;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(55, 71, 79, 0.15);
}

.youtube-card p {
  max-width: 520px;
  margin: 0 auto 20px;
  color: var(--color-muted);
}

.youtube-mark {
  width: 72px;
  height: auto;
}

.youtube-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 10px 18px;
  background: #ff0000;
  color: #fff;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
}

.youtube-link:hover {
  background: #cc0000;
  color: #fff;
}

.youtube-link img {
  width: 28px;
  height: 20px;
  filter: brightness(0) invert(1);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 24px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-size: 0.95rem;
}

.footer-links a:hover {
  text-decoration: underline;
}

.lang-switch {
  position: relative;
}

.lang-switch-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 12px;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-primary);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
}

.lang-switch-btn:hover,
.lang-switch-btn[aria-expanded="true"] {
  color: var(--color-primary-dark);
  border-color: var(--color-accent);
}

.lang-flag {
  font-size: 1.15rem;
  line-height: 1;
}

.lang-caret {
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
}

.lang-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  z-index: 30;
  min-width: 190px;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(55, 71, 79, 0.15);
}

.lang-menu[hidden] {
  display: none;
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  font: inherit;
  font-size: 0.95rem;
  color: var(--color-primary);
  background: transparent;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  text-align: left;
}

.lang-option:hover,
.lang-option:focus {
  background: var(--color-bg);
  outline: none;
}

.lang-option[aria-selected="true"] {
  font-weight: 600;
  color: var(--color-primary-dark);
}

html.i18n-pending body {
  visibility: hidden;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 600px) {
  .hero {
    padding: 36px 16px 28px;
  }
}

@media (max-width: 760px) {
  .site-header-inner {
    position: relative;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin: 0;
    padding: 8px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-top: 0;
    border-radius: 0 0 12px 12px;
    box-shadow: 0 4px 16px rgba(55, 71, 79, 0.15);
  }

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

  .nav-links a.nav-text {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 10px 12px;
    font-size: 1rem;
    border-radius: var(--radius);
  }

  .nav-links a.nav-text:hover,
  .nav-links a.nav-text[aria-current="page"] {
    background: var(--color-bg);
    text-decoration: none;
  }

  .nav-links .lang-switch {
    margin-top: 4px;
    padding-top: 8px;
    border-top: 1px solid var(--color-border);
  }

  .nav-links .lang-switch-btn {
    width: 100%;
    justify-content: flex-start;
  }

  .nav-links .lang-menu {
    position: static;
    min-width: 0;
    margin-top: 4px;
    padding: 0;
    border: 0;
    box-shadow: none;
  }
}