:root {
  --bg: #fafaf9;
  --bg-elevated: #ffffff;
  --bg-soft: #f3f4f6;
  --fg: #111827;
  --fg-muted: #6b7280;
  --accent: #d97706;
  --accent-soft: #fff7ed;
  --border-subtle: #e5e7eb;
  --radius-lg: 16px;
  --radius-md: 12px;
  --shadow-soft: 0 14px 35px rgba(15, 23, 42, 0.08);
  --shadow-subtle: 0 6px 18px rgba(15, 23, 42, 0.04);
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body.site-body {
  min-height: 100vh;
  background: radial-gradient(circle at top left, #ffffff, var(--bg) 55%, #f3f4f6 100%);
  color: var(--fg);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: linear-gradient(to bottom, #ffffff, rgba(248, 250, 252, 0.96));
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.brand {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-title {
  font-weight: 600;
  letter-spacing: 0.04em;
}

.brand-subtitle {
  font-size: 12px;
  color: var(--fg-muted);
}

.nav {
  display: flex;
  gap: 10px;
}

.nav-link {
  position: relative;
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--fg-muted);
  text-decoration: none;
  border: 1px solid transparent;
  transition: all 0.18s ease-out;
}

.nav-link:hover {
  color: var(--fg);
  border-color: var(--border-subtle);
  background: var(--bg-soft);
}

.nav-link-active {
  color: var(--fg);
  border-color: transparent;
  background: var(--bg-soft);
}

.nav-lang-dropdown {
  position: relative;
  margin-left: 8px;
  padding-left: 8px;
  border-left: 1px solid var(--border-subtle);
}

.nav-lang-toggle {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  font-size: 14px;
  font-family: inherit;
  color: var(--fg-muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.18s, border-color 0.18s, background 0.18s;
}

.nav-lang-toggle:hover,
.nav-lang-dropdown.is-open .nav-lang-toggle {
  color: var(--fg);
  border-color: var(--border-subtle);
  background: var(--bg-soft);
}

.nav-lang-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin: 4px 0 0;
  padding: 6px 0;
  min-width: 100px;
  list-style: none;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-subtle);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.18s, visibility 0.18s, transform 0.18s;
  z-index: 30;
}

.nav-lang-dropdown.is-open .nav-lang-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-lang-menu-link {
  display: block;
  padding: 8px 14px;
  font-size: 14px;
  color: var(--fg);
  text-decoration: none;
  transition: background 0.18s, color 0.18s;
}

.nav-lang-menu-link:hover {
  background: var(--bg-soft);
  color: var(--accent);
}

.nav-lang-menu-link-current {
  color: var(--fg-muted);
  font-weight: 500;
}

.site-main {
  padding-bottom: 48px;
}

.section {
  padding: 32px 0 24px;
}

.section-hero {
  padding-top: 40px;
}

.section-article {
  padding-top: 32px;
}

.section-secondary {
  padding-top: 8px;
}

.page-header {
  margin-bottom: 22px;
}

.page-title {
  margin: 0 0 6px;
  font-size: 24px;
}

.page-subtitle,
.page-intro {
  margin: 0;
  color: var(--fg-muted);
  font-size: 14px;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2.8fr);
  gap: 26px;
  align-items: start;
}

.hero-text {
  background: radial-gradient(circle at top left, #ffffff, #f9fafb);
  border-radius: var(--radius-lg);
  padding: 22px 22px 20px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border-subtle);
}

.hero-title {
  margin: 0 0 4px;
  font-size: 26px;
}

.hero-subtitle {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--accent);
}

.hero-body {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--fg);
  max-width: 65ch;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 10px;
}

.hero-meta {
  font-size: 13px;
  color: var(--fg-muted);
}

.overview-content {
  font-size: 14px;
  line-height: 1.6;
}

.overview-content h1 {
  margin: 0 0 4px;
  font-size: 26px;
}

.overview-content h2 {
  margin: 1em 0 0.5em;
  font-size: 16px;
}

.overview-content p {
  margin: 0 0 12px;
}

.overview-content ul {
  padding-left: 1.25em;
  margin: 0 0 12px;
}

.overview-content a {
  color: var(--accent);
  text-decoration: none;
}

.overview-content a:hover {
  text-decoration: underline;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  border-radius: 12px;
  font-size: 14px;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.18s ease-out;
}

.button-primary {
  background: linear-gradient(to right, #fbbf24, #d97706);
  color: #111827;
  font-weight: 600;
  box-shadow: 0 18px 40px rgba(202, 138, 4, 0.3);
}

.button-primary:hover {
  filter: brightness(1.05);
  box-shadow: 0 20px 45px rgba(202, 138, 4, 0.4);
}

.button-ghost {
  border-color: var(--border-subtle);
  color: var(--fg-muted);
  background: var(--bg-elevated);
}

.button-ghost:hover {
  background: var(--bg-soft);
}

.hero-panel {
  background: radial-gradient(circle at top right, #f9fafb, var(--bg-elevated));
  border-radius: var(--radius-lg);
  padding: 18px 18px 14px;
  box-shadow: var(--shadow-subtle);
  border: 1px solid var(--border-subtle);
}

.hero-layout-home {
  align-items: center;
}

.hero-text-home {
  min-height: 100%;
}

.hero-panel-avatar {
  padding: 20px;
  background:
    radial-gradient(circle at top, rgba(251, 191, 36, 0.28), transparent 48%),
    linear-gradient(180deg, #fffaf0 0%, #fff 100%);
}

.avatar-stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 320px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(255, 247, 237, 0.94)),
    linear-gradient(90deg, rgba(217, 119, 6, 0.05) 1px, transparent 1px),
    linear-gradient(rgba(217, 119, 6, 0.05) 1px, transparent 1px);
  background-size: auto, 16px 16px, 16px 16px;
  border: 1px solid rgba(217, 119, 6, 0.12);
}

.avatar-grid {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 22%, rgba(251, 191, 36, 0.28), transparent 34%),
    radial-gradient(circle at 50% 100%, rgba(217, 119, 6, 0.14), transparent 38%);
}

.avatar-pixel-horse {
  position: relative;
  width: min(100%, 320px);
  height: auto;
  image-rendering: pixelated;
  filter: drop-shadow(0 20px 34px rgba(89, 52, 33, 0.18));
}

.panel-title {
  margin: 0 0 10px;
  font-size: 16px;
}

.panel-empty {
  margin: 0;
  font-size: 13px;
  color: var(--fg-muted);
}

.panel-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.grid {
  display: grid;
  gap: 14px;
}

.grid-posts {
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.card {
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-subtle);
}

.card-post {
  overflow: hidden;
}

.card-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.card-body {
  padding: 14px 14px 12px;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: rgba(107, 114, 128, 0.9);
  margin-bottom: 4px;
}

.card-title {
  margin: 0 0 4px;
  font-size: 17px;
}

.card-description {
  margin: 0;
  font-size: 13px;
  color: var(--fg-muted);
}

.card-contact {
  padding: 14px 14px 12px;
  background: #f9fafb;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-muted);
}

.badge-accent {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
  margin-top: 6px;
}

.meta-dot,
.footer-dot {
  display: inline-block;
  padding: 0 4px;
  color: var(--fg-muted);
}

.section-article .article-header {
  margin-bottom: 16px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--fg-muted);
  margin-bottom: 6px;
}

.article-title {
  margin: 0 0 6px;
  font-size: 24px;
}

.article-description {
  margin: 0;
  font-size: 14px;
  color: var(--fg-muted);
}

.article-toc {
  margin: 16px 0 18px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  background: #f9fafb;
  border: 1px solid var(--border-subtle);
  font-size: 13px;
}

.article-content {
  font-size: 15px;
  line-height: 1.7;
}

.article-content p {
  margin-top: 0;
  margin-bottom: 12px;
}

.two-column {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.list {
  padding-left: 18px;
  margin: 8px 0 0;
  font-size: 15px;
  color: var(--fg-muted);
}

.list li {
  margin-bottom: 4px;
}

.page-content {
  font-size: 14px;
  color: var(--fg);
}

.contact-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: #f9fafb;
  padding: 14px 0 18px;
  margin-top: 16px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--fg-muted);
}

.footer-main {
  display: flex;
  align-items: center;
}

.footer-meta {
  opacity: 0.9;
}

@media (max-width: 800px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .hero-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-panel {
    order: -1;
  }

  .avatar-stage {
    min-height: 240px;
  }

  .avatar-pixel-horse {
    width: min(100%, 240px);
  }
}