:root {
  --bg: #0a0d14;
  --bg-soft: rgba(255,255,255,0.04);
  --panel: rgba(255,255,255,0.06);
  --panel-border: rgba(255,255,255,0.1);
  --text: #f4f7fb;
  --muted: #a8b0bf;
  --line: rgba(255,255,255,0.08);
  --accent: #8ab4ff;
  --accent-2: #c2a8ff;
  --shadow: 0 20px 60px rgba(0,0,0,0.35);
  --radius: 24px;
  --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", "Noto Sans JP", system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(138,180,255,0.18), transparent 30%),
    radial-gradient(circle at 80% 10%, rgba(194,168,255,0.16), transparent 24%),
    linear-gradient(180deg, #0a0d14 0%, #0f1320 100%);
  min-height: 100vh;
}

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

.site-shell {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
  padding-bottom: 48px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-mark {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 24px rgba(138,180,255,0.6);
}

.nav {
  display: flex;
  gap: 20px;
}

.nav a {
  color: var(--muted);
  transition: color 0.2s ease;
}

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

.section {
  padding: 64px 0;
}

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

.hero {
  display: grid;
  grid-template-columns: 1.35fr 0.85fr;
  gap: 28px;
  align-items: stretch;
  padding-top: 44px;
}

.eyebrow,
.panel-label,
.work-kind,
.stat-label {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.76rem;
  color: var(--muted);
}

.hero h1,
.section h2 {
  margin: 10px 0 16px;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.hero h1 {
  font-size: clamp(2.6rem, 6vw, 5.5rem);
}

.section h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

.hero-text,
.panel p,
.lead,
.timeline-item p,
.contact-panel p,
.work-description {
  color: var(--muted);
  line-height: 1.8;
}

.hero-actions,
.contact-links,
.work-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--panel-border);
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

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

.button.primary {
  background: linear-gradient(135deg, rgba(138,180,255,0.22), rgba(194,168,255,0.18));
  border-color: rgba(138,180,255,0.35);
}

.button.secondary {
  background: rgba(255,255,255,0.04);
}

.button.block {
  width: 100%;
}

.hero-panel,
.about-cards {
  display: grid;
  gap: 16px;
}

.stat-card,
.panel,
.contact-panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
}

.stat-card {
  padding: 22px;
  min-height: 132px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stat-card strong {
  font-size: 1.15rem;
  line-height: 1.4;
}

.intro-grid,
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.panel {
  padding: 28px;
}

.panel.compact ul {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.9;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
  margin-bottom: 28px;
}

.section-head.single {
  justify-content: start;
}

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

.filter-button {
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--panel-border);
  background: rgba(255,255,255,0.04);
  color: var(--muted);
  cursor: pointer;
}

.filter-button.is-active {
  color: var(--text);
  border-color: rgba(138,180,255,0.4);
  background: rgba(138,180,255,0.14);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.work-card {
  display: grid;
  gap: 18px;
}

.work-top {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: start;
}

.work-title {
  margin: 8px 0 0;
  font-size: 1.35rem;
}

.work-status {
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 0.82rem;
  color: var(--muted);
  white-space: nowrap;
}

.tag-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag-list li {
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
}

.work-meta {
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.work-role {
  color: var(--muted);
  font-size: 0.92rem;
}

.work-link {
  color: var(--accent);
}

.timeline {
  display: grid;
  gap: 16px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 18px;
  padding: 22px 24px;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.04);
}

.timeline-item span {
  font-size: 1.6rem;
  font-weight: 800;
  color: rgba(138,180,255,0.9);
}

.contact-panel {
  padding: 28px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  align-items: center;
}

@media (max-width: 960px) {
  .hero,
  .intro-grid,
  .about-grid,
  .contact-panel,
  .works-grid {
    grid-template-columns: 1fr;
  }

  .section-head {
    align-items: start;
    flex-direction: column;
  }
}

@media (max-width: 720px) {
  .site-shell {
    width: min(calc(100% - 24px), var(--max));
  }

  .site-header {
    flex-direction: column;
    align-items: start;
    gap: 14px;
  }

  .nav {
    overflow-x: auto;
    width: 100%;
    padding-bottom: 4px;
  }

  .section {
    padding: 44px 0;
  }

  .panel,
  .contact-panel,
  .stat-card {
    padding: 22px;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }
}