:root {
  --bg: #fafaf7;
  --surface: #ffffff;
  --text: #1a1a1a;
  --muted: #6b6b6b;
  --accent: #2f5d50;
  --border: #ececea;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.04);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans",
    "Yu Gothic UI", "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.15s ease;
}

a:hover {
  opacity: 0.7;
}

img {
  max-width: 100%;
  display: block;
}

/* ===== Header / Nav ===== */
.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(250, 250, 247, 0.85);
  backdrop-filter: saturate(180%) blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  max-width: 880px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav__brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
  font-size: 1.05rem;
}

.nav__list {
  list-style: none;
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
}

.nav__list a {
  color: var(--muted);
  font-size: 0.95rem;
}

.nav__list a.is-active {
  color: var(--text);
  font-weight: 600;
}

/* ===== Main layout ===== */
.main {
  max-width: 880px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}

.section {
  margin-bottom: 72px;
}

.section:last-child {
  margin-bottom: 0;
}

.section__title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin: 0 0 24px;
  font-weight: 600;
}

h1, h2, h3 {
  color: var(--text);
  font-weight: 700;
  line-height: 1.3;
}

h1 {
  font-size: 2.2rem;
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.5rem;
  margin: 0 0 16px;
}

h3 {
  font-size: 1.1rem;
  margin: 0 0 8px;
}

p {
  color: #2a2a2a;
}

.lead {
  font-size: 1.1rem;
  color: var(--muted);
  margin: 0 0 32px;
}

/* ===== Hero ===== */
.hero {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 64px;
}

.hero__avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  background: #eee;
}

.hero__role {
  color: var(--accent);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

/* ===== Cards (works) ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.card__image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: #f0f0ee;
}

.card__body {
  padding: 20px 22px 24px;
}

.card__tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--accent);
  background: rgba(47, 93, 80, 0.08);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
  letter-spacing: 0.05em;
}

.card p {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 6px 0 0;
}

/* ===== Hobby list ===== */
.hobby-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.hobby-list li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  font-size: 0.95rem;
}

.hobby-list strong {
  display: block;
  margin-bottom: 4px;
  color: var(--text);
}

.hobby-list span {
  color: var(--muted);
  font-size: 0.85rem;
}

/* ===== Contact ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.contact-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 22px;
}

.contact-item__label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 6px;
}

.contact-item__value {
  font-size: 1rem;
  color: var(--text);
  word-break: break-all;
}

.note {
  background: #fff;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  padding: 16px 20px;
  color: var(--muted);
  font-size: 0.9rem;
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .nav {
    flex-direction: column;
    gap: 12px;
    padding: 16px 20px;
  }

  .nav__list {
    gap: 20px;
  }

  .main {
    padding: 40px 20px 64px;
  }

  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 20px;
  }

  .hero__avatar {
    margin: 0 auto;
    width: 130px;
    height: 130px;
  }

  h1 {
    font-size: 1.8rem;
  }

  .cards,
  .hobby-list,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}