:root {
  --bg: #eef3f9;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: #ffffff;
  --surface-soft: #f6f9fc;
  --text: #0f1f31;
  --muted: #5e6e82;
  --accent: #0e7c73;
  --accent-strong: #114a8b;
  --accent-soft: rgba(14, 124, 115, 0.12);
  --border: rgba(17, 47, 84, 0.12);
  --shadow: 0 22px 60px rgba(17, 45, 79, 0.08);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --content-width: min(1120px, calc(100vw - 32px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(17, 74, 139, 0.09), transparent 28%),
    radial-gradient(circle at top right, rgba(14, 124, 115, 0.14), transparent 24%),
    linear-gradient(180deg, #f6f9fd 0%, #eef3f9 50%, #e8eef6 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.18) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.2), transparent 75%);
}

a {
  color: inherit;
}

img {
  max-width: 100%;
}

.site-shell {
  position: relative;
}

.page-main,
#site-header,
#site-footer {
  width: var(--content-width);
  margin: 0 auto;
}

.page-main {
  padding: 24px 0 72px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  padding-top: 20px;
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(17, 47, 84, 0.09);
  border-radius: 999px;
  backdrop-filter: blur(18px);
  box-shadow: 0 16px 50px rgba(16, 35, 58, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  min-width: 0;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #fff;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-copy {
  min-width: 0;
}

.brand-copy strong,
.hero-copy h1,
.section-heading h2,
.page-hero-copy h1,
.hero-sidecard h2,
.doc-header h2,
.not-found-panel h1 {
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
}

.brand-copy strong {
  display: block;
  font-size: 0.98rem;
}

.brand-copy span {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
}

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

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--muted);
  transition: background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--text);
  background: rgba(17, 74, 139, 0.07);
  transform: translateY(-1px);
}

.nav-link.is-active {
  color: var(--accent-strong);
  background: rgba(17, 74, 139, 0.12);
}

.hero,
.page-hero {
  padding: 36px;
}

.hero-layout,
.page-hero-copy,
.docs-layout {
  display: grid;
  gap: 24px;
}

.hero-layout,
.page-hero-copy {
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.9fr);
  align-items: start;
}

.hero-copy h1,
.page-hero-copy h1 {
  margin: 0;
  font-size: clamp(2.3rem, 6vw, 4.7rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
  max-width: 10ch;
}

.lead {
  max-width: 64ch;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

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

.button,
.text-link {
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
}

.button:hover,
.button:focus-visible,
.text-link:hover,
.text-link:focus-visible {
  transform: translateY(-1px);
}

.button.primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #fff;
  box-shadow: 0 14px 30px rgba(17, 74, 139, 0.24);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.84);
  color: var(--text);
  border: 1px solid var(--border);
}

.section {
  margin-top: 28px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.section-kicker,
.meta-line,
.card .category,
.doc-pill,
.profile-note,
.footer-meta,
.doc-related,
.quote-panel span {
  font-family: "IBM Plex Mono", monospace;
}

.section-kicker,
.meta-line {
  margin: 0 0 10px;
  color: var(--accent-strong);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-heading h2,
.hero-sidecard h2,
.doc-header h2,
.not-found-panel h1 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.hero-sidecard,
.quote-panel,
.docs-sidebar,
.doc-viewer,
.not-found-panel {
  padding: 24px;
}

.hero-sidecard {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(246, 250, 253, 0.82));
}

.chip-row,
.repo-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip,
.repo-chip,
.doc-pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--accent-strong);
  background: rgba(17, 74, 139, 0.08);
  border: 1px solid rgba(17, 74, 139, 0.1);
}

.hero .chip-row {
  margin-top: 22px;
}

.plain-list {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}

.plain-list li + li {
  margin-top: 8px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
}

.triptych > .card,
.compact-grid > .card,
.project-theme,
.card {
  grid-column: span 4;
}

.compact-grid > .card {
  grid-column: span 4;
}

.card,
.project-theme {
  padding: 22px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 14px 40px rgba(16, 35, 58, 0.06);
}

.card h3,
.project-theme h3,
.docs-entry h3 {
  margin: 10px 0 8px;
  font-size: 1.18rem;
}

.card p,
.project-theme p,
.docs-entry p,
.doc-summary,
.markdown-body p,
.markdown-body li {
  color: var(--muted);
  line-height: 1.8;
}

.card-footer,
.profile-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.text-link {
  color: var(--accent-strong);
  text-decoration: none;
  font-weight: 600;
}

.card .category,
.profile-note,
.doc-related {
  color: var(--muted);
  font-size: 0.78rem;
}

.docs-layout {
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.5fr);
  align-items: start;
}

.docs-sidebar,
.doc-viewer {
  min-height: 560px;
}

.docs-catalog {
  display: grid;
  gap: 12px;
}

.docs-entry {
  display: block;
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  text-decoration: none;
  background: var(--surface-soft);
  transition: border-color 180ms ease, transform 180ms ease, background-color 180ms ease;
}

.docs-entry:hover,
.docs-entry:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(17, 74, 139, 0.24);
}

.docs-entry.is-active {
  background: rgba(17, 74, 139, 0.1);
  border-color: rgba(17, 74, 139, 0.25);
}

.doc-header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 18px;
  margin-bottom: 18px;
}

.doc-summary,
.doc-related {
  margin: 12px 0 0;
}

.markdown-body {
  color: var(--text);
}

.markdown-body > :first-child {
  margin-top: 0;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3 {
  margin-top: 1.6em;
  margin-bottom: 0.55em;
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
  line-height: 1.2;
}

.markdown-body code {
  padding: 0.15em 0.4em;
  border-radius: 8px;
  background: rgba(17, 74, 139, 0.08);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.92em;
}

.markdown-body pre {
  overflow-x: auto;
  padding: 18px;
  border-radius: var(--radius-sm);
  background: #10243a;
  color: #eff7ff;
}

.markdown-body pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}

.markdown-body blockquote {
  margin: 22px 0;
  padding-left: 16px;
  border-left: 3px solid rgba(17, 74, 139, 0.24);
}

.quote-panel p {
  margin: 0;
  font-size: clamp(1.4rem, 2.7vw, 2.1rem);
  line-height: 1.4;
}

.quote-panel span {
  display: inline-block;
  margin-top: 10px;
  color: var(--muted);
}

.repo-cloud {
  gap: 12px;
}

.repo-cloud.panel {
  padding: 22px;
}

.repo-chip {
  text-decoration: none;
  background: rgba(255, 255, 255, 0.86);
}

.repo-chip:hover,
.repo-chip:focus-visible {
  background: rgba(17, 74, 139, 0.1);
}

.profile-card.is-textonly {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(244, 248, 252, 0.82));
}

.footer {
  padding: 8px 0 40px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 4px 0;
  color: var(--muted);
}

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: flex-end;
  font-size: 0.78rem;
}

.muted {
  color: var(--muted);
}

.project-group + .project-group {
  margin-top: 28px;
}

.not-found-panel {
  text-align: center;
  padding: 48px 28px;
}

.not-found-panel .hero-actions {
  justify-content: center;
}

:focus-visible {
  outline: 2px solid rgba(17, 74, 139, 0.36);
  outline-offset: 3px;
}

@media (max-width: 1024px) {
  .triptych > .card,
  .compact-grid > .card,
  .project-theme,
  .card {
    grid-column: span 6;
  }

  .docs-layout,
  .hero-layout,
  .page-hero-copy {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .page-main,
  #site-header,
  #site-footer {
    width: min(100vw - 20px, 1120px);
  }

  .site-header-inner,
  .hero,
  .page-hero,
  .hero-sidecard,
  .docs-sidebar,
  .doc-viewer,
  .quote-panel,
  .card,
  .project-theme {
    padding: 18px;
  }

  .site-header-inner,
  .footer-inner,
  .section-heading {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-meta {
    align-items: flex-start;
  }

  .nav {
    width: 100%;
  }

  .nav-link {
    flex: 1 1 auto;
  }

  .hero-copy h1,
  .page-hero-copy h1 {
    max-width: none;
  }

  .triptych > .card,
  .compact-grid > .card,
  .project-theme,
  .card {
    grid-column: span 12;
  }

  .button {
    width: 100%;
  }
}