:root {
  --bg: #0a0a0a;
  --fg: #e0e0e0;
  --dim: #666;
  --accent: #c0a070;
  --accent-dim: #8a7a5a;
  --border: #1a1a1a;
  --card-bg: #111;
  --card-hover: #181818;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 15px;
  scroll-behavior: smooth;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: #222;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #333;
}

* {
  scrollbar-width: thin;
  scrollbar-color: #222 var(--bg);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  padding-top: 56px;
}

.sticky-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, .85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.sticky-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.sticky-header .logo {
  font-size: 1rem;
  margin-bottom: 0;
  gap: 6px;
  cursor: pointer;
}

.sticky-header .logo-symbol {
  font-size: 1.1rem;
}

.sticky-header nav {
  margin-top: 0;
  gap: 20px;
}

.sticky-header nav a {
  font-size: .8rem;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color .2s;
}

a:hover {
  color: #fff;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

header {
  padding: 64px 0 60px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 60px;
}

.hero-logo {
  font-size: 2.4rem;
  margin-bottom: 12px;
}

header h1 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -.03em;
  color: #fff;
  margin-bottom: 8px;
}

.logo {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -.03em;
  color: #fff;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-symbol {
  color: var(--accent);
  font-size: 1.8rem;
}

header p {
  color: var(--dim);
  font-size: .95rem;
  max-width: 480px;
}

nav {
  display: flex;
  gap: 24px;
  margin-top: 20px;
}

nav a {
  font-size: .85rem;
  color: var(--dim);
}

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

nav a.active,
.logo.active {
  color: var(--accent);
}

#app {
  transition: opacity .15s ease;
  min-height: 60vh;
}

section {
  margin-bottom: 64px;
}

#app h1, #app h2, #app h3 {
  color: #fff;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: .5em;
}

#app h1 { font-size: 1.6rem; letter-spacing: -.03em; }
#app h2 { font-size: 1.2rem; }
#app h3 { font-size: 1rem; }

#app p, #app li {
  color: #999;
  font-size: .88rem;
  line-height: 1.7;
}

#app p {
  margin-bottom: 1em;
}

#app ul, #app ol {
  padding-left: 1.2em;
  margin-bottom: 1em;
}

#app li {
  margin-bottom: .3em;
}

#app blockquote {
  border-left: 2px solid var(--accent-dim);
  padding: 8px 16px;
  margin: 16px 0;
  color: #777;
  font-style: italic;
}

#app hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}

#app code {
  font-family: "SF Mono", "Cascadia Code", "Consolas", monospace;
  font-size: .82rem;
  background: var(--card-bg);
  padding: 2px 6px;
  border-radius: 3px;
  color: var(--accent);
}

#app pre {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px;
  overflow-x: auto;
  margin-bottom: 1em;
}

#app pre code {
  background: none;
  padding: 0;
  color: var(--fg);
}

#app img {
  max-width: 100%;
  border-radius: 6px;
  margin: 16px 0;
}

#app table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1em;
}

#app th, #app td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
  font-size: .85rem;
}

#app th {
  background: var(--card-bg);
  color: var(--dim);
  font-weight: 600;
}

#app a:not(.project-card) {
  color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color .2s;
}

#app a:not(.project-card):hover {
  border-color: var(--accent);
}

.section-title {
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--dim);
  margin-bottom: 20px;
}

.section-title span {
  color: var(--accent);
}

.project-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  transition: background .2s, border-color .2s;
}

.project-card:hover {
  background: var(--card-hover);
  border-color: #2a2a2a;
}

.project-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
}

.project-card .sub {
  font-size: .8rem;
  color: var(--dim);
  margin-bottom: 8px;
}

.project-card p {
  font-size: .85rem;
  color: #999;
  line-height: 1.55;
}

.thought-list {
  list-style: none;
}

.thought-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
}

.thought-list li:last-child {
  border-bottom: none;
}

.thought-list .date {
  font-size: .8rem;
  color: var(--dim);
  white-space: nowrap;
  flex-shrink: 0;
}

.version-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.version-tag {
  font-size: .75rem;
  padding: 3px 10px;
  border-radius: 12px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--dim);
}

.version-tag.current {
  color: var(--accent);
  border-color: var(--accent-dim);
}

.bio-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.bio-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
}

.bio-card h3 {
  font-size: .8rem;
  color: var(--accent);
  margin-bottom: 6px;
}

.bio-card p {
  font-size: .85rem;
  color: #999;
}

footer {
  padding: 40px 0 80px;
  border-top: 1px solid var(--border);
  margin-top: 40px;
}

footer p {
  font-size: .8rem;
  color: #444;
}

@media (max-width: 600px) {
  body {
    padding-top: 52px;
  }

  .sticky-header .container {
    height: 52px;
  }

  .sticky-header .logo {
    font-size: .9rem;
  }

  .sticky-header nav {
    gap: 14px;
  }

  .sticky-header nav a {
    font-size: .75rem;
  }

  header {
    padding: 40px 0 36px;
    margin-bottom: 36px;
  }

  .project-grid, .bio-grid {
    grid-template-columns: 1fr;
  }

  .thought-list li {
    flex-direction: column;
    gap: 4px;
  }
}