:root {
  --bg: #0a0a0f;
  --surface: #13131a;
  --surface2: #1a1a27;
  --border: #1e1e2e;
  --accent: #4fc3f7;
  --green: #48bb78;
  --purple: #ce93d8;
  --orange: #f6ad55;
  --red: #fc8181;
  --text: #e2e8f0;
  --muted: #64748b;
  --mono: "SF Mono", "Fira Code", "Fira Mono", monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* NAV */
.nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 2rem;
  display: flex;
  gap: 1.5rem;
  align-items: center;
  font-size: 0.85rem;
}
.nav .brand { color: var(--accent); font-weight: 700; font-size: 1rem; }
.nav a { color: var(--muted); }
.nav a:hover { color: var(--text); }

/* HERO */
.hero {
  background: linear-gradient(135deg, #0d0d1a 0%, #0a0a0f 60%, #0d1117 100%);
  border-bottom: 1px solid var(--border);
  padding: 3rem 2rem 2.5rem;
  max-width: 900px;
  margin: 0 auto;
}
.hero .role-badge {
  display: inline-block;
  background: var(--accent);
  color: #000;
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.2rem 0.7rem;
  border-radius: 3px;
  margin-bottom: 0.8rem;
}
.hero h1 { font-size: 2.4rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 0.3rem; }
.hero .tagline { color: var(--muted); font-size: 1.05rem; }
.hero .meta { margin-top: 0.6rem; font-size: 0.85rem; color: var(--muted); }
.hero .meta span + span::before { content: " · "; }

/* MAIN CONTENT */
.content { max-width: 900px; margin: 0 auto; padding: 2.5rem 2rem; }

/* SECTION */
.section { margin-bottom: 2.8rem; }
.section h2 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.2rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.section p { margin-bottom: 1rem; color: var(--text); }

/* QUOTES */
.quote-block {
  background: var(--surface);
  border-left: 3px solid var(--accent);
  padding: 1.2rem 1.5rem;
  margin-bottom: 1.2rem;
  border-radius: 0 6px 6px 0;
}
.quote-block blockquote {
  font-size: 1.05rem;
  font-style: italic;
  color: #c8d8ea;
  line-height: 1.6;
}
.quote-block cite {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--muted);
  font-style: normal;
}

/* ACHIEVEMENTS */
.achieve-list { list-style: none; }
.achieve-list li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  padding-left: 1.2rem;
  position: relative;
}
.achieve-list li::before { content: "▸"; position: absolute; left: 0; color: var(--green); }

/* LESSONS */
.lesson-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}
.lesson-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.2rem;
}
.lesson-card .num {
  font-size: 0.75rem;
  color: var(--accent);
  font-family: var(--mono);
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.lesson-card strong { display: block; margin-bottom: 0.3rem; color: var(--text); }
.lesson-card p { font-size: 0.9rem; color: var(--muted); margin: 0; }

/* ROLE PAGE GRID */
.people-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 1.2rem;
}
.person-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.4rem;
  transition: border-color 0.2s;
}
.person-card:hover { border-color: var(--accent); }
.person-card .name { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.2rem; }
.person-card .company { font-size: 0.82rem; color: var(--accent); margin-bottom: 0.6rem; }
.person-card .snippet { font-size: 0.88rem; color: var(--muted); margin-bottom: 1rem; line-height: 1.5; }
.person-card .link-btn {
  display: inline-block;
  font-size: 0.8rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  text-decoration: none;
}
.person-card .link-btn:hover { background: var(--accent); color: #000; text-decoration: none; }

/* MAIN KEIEIKAIGI PAGE */
.k-header {
  text-align: center;
  padding: 4rem 2rem 2rem;
  background: linear-gradient(180deg, #0d0d1a 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
}
.k-header .k-logo {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.8rem;
}
.k-header h1 { font-size: 2.8rem; font-weight: 900; letter-spacing: -0.03em; margin-bottom: 0.5rem; }
.k-header h1 span { color: var(--accent); }
.k-header p { color: var(--muted); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }

.k-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.4rem;
  max-width: 1100px;
  margin: 3rem auto;
  padding: 0 2rem;
}
.k-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem 1.6rem;
  transition: all 0.2s;
  text-decoration: none;
  color: var(--text);
  display: block;
}
.k-card:hover { border-color: var(--accent); transform: translateY(-2px); text-decoration: none; }
.k-card .k-icon { font-size: 2rem; margin-bottom: 0.8rem; }
.k-card .k-title { font-size: 1.2rem; font-weight: 800; margin-bottom: 0.3rem; }
.k-card .k-full { font-size: 0.8rem; color: var(--accent); margin-bottom: 0.8rem; font-family: var(--mono); }
.k-card .k-desc { font-size: 0.88rem; color: var(--muted); line-height: 1.5; margin-bottom: 1rem; }
.k-card .k-count { font-size: 0.78rem; color: var(--border); font-family: var(--mono); }
.k-card .k-count span { color: var(--green); }

/* TAG */
.tag {
  display: inline-block;
  font-size: 0.72rem;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  font-weight: 600;
  margin: 0.15rem;
}
.tag-blue { background: rgba(79,195,247,0.15); color: var(--accent); }
.tag-green { background: rgba(72,187,120,0.15); color: var(--green); }
.tag-purple { background: rgba(206,147,216,0.15); color: var(--purple); }

/* FOOTER */
footer {
  text-align: center;
  padding: 2rem;
  color: var(--muted);
  font-size: 0.82rem;
  border-top: 1px solid var(--border);
  margin-top: 4rem;
}