:root {
  --bg: #08111f;
  --bg-soft: rgba(10, 22, 40, 0.78);
  --panel: rgba(14, 26, 46, 0.74);
  --panel-strong: rgba(10, 18, 34, 0.92);
  --line: rgba(154, 179, 214, 0.18);
  --line-strong: rgba(154, 179, 214, 0.28);
  --text: #ecf3ff;
  --muted: #9fb1c7;
  --brand: #64d2ff;
  --brand-2: #a6ffcb;
  --accent: #ffb36a;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
  --radius-lg: 32px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --content-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Space Grotesk", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(100, 210, 255, 0.18), transparent 34%),
    radial-gradient(circle at top right, rgba(166, 255, 203, 0.14), transparent 28%),
    radial-gradient(circle at 30% 80%, rgba(255, 179, 106, 0.12), transparent 24%),
    linear-gradient(180deg, #06101d 0%, #08111f 100%);
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(circle at center, black 32%, transparent 100%);
  pointer-events: none;
  z-index: -2;
}

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

img {
  max-width: 100%;
}

.page-shell {
  width: min(calc(100% - 32px), var(--content-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(20px);
  background: rgba(8, 17, 31, 0.66);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.site-header-inner {
  width: min(calc(100% - 32px), var(--content-width));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 20px;
}

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

.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(100, 210, 255, 0.24), rgba(166, 255, 203, 0.18));
  border: 1px solid var(--line);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  display: grid;
  place-items: center;
}

.brand-mark img {
  width: 30px;
  height: 30px;
  object-fit: contain;
}

.brand-title {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-subtitle {
  color: var(--muted);
  font-size: 0.88rem;
}

.menu-button {
  display: none;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border-radius: 999px;
  width: 46px;
  height: 46px;
  cursor: pointer;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 180ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
}

.hero {
  padding: 72px 0 36px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.88fr);
  gap: 28px;
  align-items: stretch;
}

.hero-copy,
.hero-panel,
.section-card,
.project-card,
.writing-card,
.community-card,
.archive-card,
.product-card {
  background: linear-gradient(180deg, rgba(14, 26, 46, 0.88), rgba(8, 17, 31, 0.96));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 34px;
  position: relative;
  overflow: hidden;
}

.hero-copy::after {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  right: -72px;
  top: -96px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(100, 210, 255, 0.22), transparent 70%);
  pointer-events: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--brand-2);
  font-size: 0.88rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero h1,
.article-hero h1 {
  margin: 20px 0 16px;
  font-size: clamp(2.2rem, 5vw, 4.5rem);
  line-height: 0.96;
  letter-spacing: -0.04em;
}

.hero h1 span,
.section-heading h2 span,
.article-hero h1 span {
  color: var(--brand);
}

.hero-lead,
.section-copy,
.article-intro,
.product-copy,
.project-copy,
.writing-copy,
.community-copy,
.archive-copy {
  color: var(--muted);
  font-size: 1.03rem;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

.primary-button,
.secondary-button,
.ghost-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.primary-button {
  background: linear-gradient(135deg, #64d2ff, #78f8d0);
  color: #04101e;
}

.secondary-button {
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.04);
}

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

.primary-button:hover,
.secondary-button:hover,
.ghost-link:hover {
  transform: translateY(-2px);
}

.badge-cloud {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.badge-cloud img {
  height: 28px;
}

.hero-panel {
  padding: 26px;
  display: grid;
  gap: 18px;
}

.hero-panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.panel-title {
  margin: 0;
  font-size: 1.18rem;
}

.panel-caption {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.mini-card {
  padding: 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.mini-card strong {
  display: block;
  font-size: 1.35rem;
  margin-bottom: 4px;
}

.mini-card span {
  color: var(--muted);
  font-size: 0.9rem;
}

.hero-stack {
  display: grid;
  gap: 12px;
}

.stack-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.stack-item strong {
  display: block;
  margin-bottom: 4px;
}

.stack-item span {
  color: var(--muted);
  font-size: 0.92rem;
}

.stack-pill,
.card-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 6px 10px;
  background: rgba(100, 210, 255, 0.13);
  color: var(--brand);
  font-size: 0.8rem;
  font-weight: 700;
  white-space: nowrap;
}

.section {
  padding: 34px 0;
}

.section-heading {
  margin-bottom: 20px;
}

.section-heading h2 {
  margin: 0 0 10px;
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  letter-spacing: -0.03em;
}

.section-grid,
.project-grid,
.writing-grid,
.community-grid,
.archive-grid,
.product-grid {
  display: grid;
  gap: 18px;
}

.section-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.project-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.product-grid,
.community-grid,
.archive-grid,
.writing-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.section-card,
.project-card,
.product-card,
.writing-card,
.community-card,
.archive-card {
  padding: 24px;
}

.section-card h3,
.project-card h3,
.product-card h3,
.writing-card h3,
.community-card h3,
.archive-card h3 {
  margin: 16px 0 12px;
  font-size: 1.15rem;
}

.section-card p,
.project-card p,
.product-card p,
.writing-card p,
.community-card p,
.archive-card p,
.note-list li,
.prose li {
  color: var(--muted);
  line-height: 1.8;
}

.icon-badge {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: inline-grid;
  place-items: center;
  font-size: 1.2rem;
  background: linear-gradient(135deg, rgba(100, 210, 255, 0.16), rgba(166, 255, 203, 0.12));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.card-meta span,
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.82rem;
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
}

.section-split {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(300px, 0.94fr);
  gap: 18px;
}

.timeline-list,
.note-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
}

.timeline-list li,
.note-list li {
  padding: 16px 18px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.03);
}

.timeline-list strong,
.note-list strong {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
}

.writing-card {
  position: relative;
  overflow: hidden;
}

.writing-card::after {
  content: "";
  position: absolute;
  inset: auto -40px -60px auto;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(100, 210, 255, 0.16), transparent 70%);
  pointer-events: none;
}

.writing-card .ghost-link,
.community-card .ghost-link,
.archive-card .ghost-link,
.project-card .ghost-link,
.product-card .ghost-link {
  margin-top: 10px;
  padding: 0;
  min-height: auto;
  justify-content: flex-start;
  color: var(--brand);
}

.article-shell {
  width: min(calc(100% - 32px), 880px);
  margin: 0 auto;
  padding: 48px 0 80px;
}

.article-hero {
  margin-bottom: 24px;
  padding: 32px;
  background: linear-gradient(180deg, rgba(14, 26, 46, 0.88), rgba(8, 17, 31, 0.96));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.article-note {
  margin-top: 20px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(100, 210, 255, 0.18);
  background: rgba(100, 210, 255, 0.08);
  color: var(--muted);
  line-height: 1.8;
}

.prose {
  padding: 32px;
  background: linear-gradient(180deg, rgba(14, 26, 46, 0.88), rgba(8, 17, 31, 0.96));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.prose h2,
.prose h3 {
  margin-top: 32px;
  margin-bottom: 14px;
  letter-spacing: -0.03em;
}

.prose p,
.prose li,
.prose blockquote {
  font-size: 1.02rem;
  line-height: 1.95;
}

.prose h1,
.prose h2,
.prose h3,
.prose h4 {
  scroll-margin-top: 92px;
}

.prose ul,
.prose ol {
  padding-left: 20px;
}

.prose a {
  color: var(--brand);
  text-decoration: underline;
  text-decoration-color: rgba(100, 210, 255, 0.36);
  text-underline-offset: 0.18em;
}

.prose code {
  padding: 0.16em 0.45em;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  font-family: "IBM Plex Mono", "SFMono-Regular", monospace;
}

.prose pre {
  margin: 22px 0;
  padding: 18px;
  overflow-x: auto;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(2, 9, 19, 0.88);
}

.prose pre code {
  padding: 0;
  border-radius: 0;
  background: transparent;
}

.prose blockquote {
  margin: 22px 0;
  padding: 0 0 0 18px;
  border-left: 3px solid rgba(100, 210, 255, 0.36);
  color: #cde1ff;
}

.prose img {
  display: block;
  max-width: 100%;
  margin: 24px auto;
  border-radius: 18px;
  border: 1px solid var(--line);
}

.prose table {
  display: block;
  width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  margin: 22px 0;
}

.prose th,
.prose td {
  padding: 12px 14px;
  border: 1px solid var(--line);
  text-align: left;
}

.prose hr {
  margin: 32px 0;
  border: 0;
  border-top: 1px solid var(--line);
}

.insight-nav {
  margin-bottom: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.insight-nav a {
  color: var(--muted);
  font-size: 0.92rem;
}

.year-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.year-card {
  padding: 24px;
}

.year-card-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.year-card-header h3 {
  margin: 0;
  font-size: 1.5rem;
}

.year-card-header span {
  color: var(--muted);
  font-size: 0.92rem;
}

.article-link-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.article-link-list li {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.03);
}

.article-link-list a {
  color: var(--text);
  font-weight: 600;
}

.article-link-meta {
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer {
  padding: 28px 0 56px;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-card {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 20px;
  padding: 18px 22px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .hero-grid,
  .section-split,
  .project-grid,
  .section-grid,
  .product-grid,
  .community-grid,
  .archive-grid,
  .writing-grid,
  .year-grid {
    grid-template-columns: 1fr;
  }

  .mini-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .site-header-inner {
    min-height: 70px;
  }

  .menu-button {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 10px);
    right: 16px;
    left: 16px;
    padding: 16px;
    border-radius: 20px;
    background: rgba(8, 17, 31, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.08);
    display: none;
    flex-direction: column;
    align-items: flex-start;
    box-shadow: var(--shadow);
  }

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

  .hero {
    padding-top: 48px;
  }

  .hero-copy,
  .hero-panel,
  .section-card,
  .project-card,
  .product-card,
  .writing-card,
  .community-card,
  .archive-card,
  .article-hero,
  .prose {
    padding: 22px;
    border-radius: 24px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .primary-button,
  .secondary-button,
  .ghost-link {
    width: 100%;
  }

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

  .article-shell {
    width: min(calc(100% - 24px), 880px);
    padding-top: 28px;
  }
}