.content-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 70px 32px;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 0;
  cursor: pointer;
  user-select: none;
  transition: opacity .15s;
}

.section-header:hover { opacity: .8; }

.section-label {
  color: var(--lilac);
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
}

.section-arrow {
  display: inline-block;
  color: var(--purple);
  transition: transform .25s cubic-bezier(.4, 0, .2, 1);
}

.section-header.is-open .section-arrow {
  transform: rotate(90deg);
}

.section-divider {
  flex: 1;
  height: 1px;
  background: var(--border);
}

.section-count {
  color: var(--text-faint);
  font-size: 13px;
}

.section-body {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows .42s cubic-bezier(.4, 0, .2, 1), opacity .3s ease;
}

.section-body.is-open {
  grid-template-rows: 1fr;
  opacity: 1;
}

.section-body-inner {
  overflow: hidden;
  min-height: 0;
}

.section-body-content { margin-top: 36px; }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
}

.skill-group-label {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 18px;
}

.skill-group-label.sub { margin: 26px 0 18px; }

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

.tag {
  font-size: 13px;
  color: var(--text-code);
  border: 1px solid var(--border-card);
  background: #121317;
  padding: 7px 12px;
  border-radius: 7px;
  transition: border-color .15s, color .15s, transform .15s;
  cursor: default;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.tag:hover {
  border-color: var(--purple);
  color: #fff;
  transform: translateY(-2px);
}

.tag.lang {
  color: var(--lilac);
  border-color: color-mix(in srgb, var(--purple) 28%, var(--bg-card));
  background: rgba(var(--purple-rgb), 0.08);
}

.tag.lang:hover { border-color: var(--purple); }

.tag img {
  display: block;
  width: 14px;
  height: 14px;
}

.experience-list { display: flex; flex-direction: column; gap: 14px; }

.exp-card {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  border: 1px solid var(--border);
  background-color: var(--bg-card);
  background-image: var(--dot-grid);
  background-size: var(--dot-grid-size);
  border-radius: 12px;
  padding: 26px 28px;
  transition: border-color .18s, background-color .18s;
}

.exp-card:hover {
  border-color: color-mix(in srgb, var(--purple) 28%, var(--bg-card));
  background-color: var(--bg-card-alt);
}

.exp-org {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-bright);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color .15s;
}

.exp-org:hover { color: var(--lilac); }
.exp-org .arrow { font-size: 12px; color: var(--purple); }

.exp-role {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
}

.exp-dates {
  font-size: 12px;
  color: var(--text-faint);
  margin-top: 10px;
  letter-spacing: 0.04em;
}

.exp-points {
  margin: 0;
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.exp-points li {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--text-body);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 16px;
}

.project-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  background-color: var(--bg-card);
  background-image: var(--dot-grid);
  background-size: var(--dot-grid-size);
  border-radius: 14px;
  padding: 26px;
  text-decoration: none;
  color: var(--text-bright);
  transition: border-color .18s, transform .18s, box-shadow .18s;
  position: relative;
  overflow: hidden;
}

.project-card:hover {
  border-color: var(--purple);
  transform: translateY(-4px);
  box-shadow: 0 26px 50px -30px rgba(0, 0, 0, 0.72), 0 14px 34px -20px rgba(var(--purple-rgb), 0.36);
}

.project-date {
  position: absolute;
  top: 26px;
  right: 26px;
  font-size: 11px;
  color: var(--text-faint);
  white-space: nowrap;
}

.project-name {
  display: block;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  padding-right: 64px;
  margin-bottom: 10px;
}

.project-type {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--lilac);
  margin-bottom: 14px;
}

.project-desc {
  font-size: 13.5px;
  line-height: 1.55;
  color: #9c9ea9;
  margin: 0 0 18px;
  flex: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.tech-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-muted);
  border: 1px solid var(--border-card);
  padding: 4px 9px;
  border-radius: 5px;
  white-space: nowrap;
}

.tech-badge img { display: block; width: 12px; height: 12px; }

.project-link {
  font-size: 12px;
  color: var(--purple);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
}

.edu-card {
  position: relative;
  border: 1px solid var(--border);
  background-color: var(--bg-card);
  background-image: var(--dot-grid);
  background-size: var(--dot-grid-size);
  border-radius: 12px;
  padding: 26px;
  transition: border-color .18s, background-color .18s;
}

.edu-card:hover {
  border-color: color-mix(in srgb, var(--purple) 28%, var(--bg-card));
  background-color: var(--bg-card-alt);
}

.edu-dates {
  position: absolute;
  top: 26px;
  right: 26px;
  font-size: 12px;
  color: var(--text-faint);
  white-space: nowrap;
}

.edu-name {
  display: block;
  padding-right: 64px;
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-bright);
  text-decoration: none;
  transition: color .15s;
}

.edu-name:hover { color: var(--lilac); }

.edu-kind {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--lilac);
  margin-bottom: 12px;
}

.edu-note {
  font-size: 13.5px;
  line-height: 1.55;
  color: #9c9ea9;
  margin: 0;
}

#contact { padding-top: 90px; padding-bottom: 40px; }

.contact-card {
  border: 1px solid var(--border);
  background-image: var(--dot-grid), linear-gradient(160deg, var(--bg-card-alt), #0c0d11);
  background-size: var(--dot-grid-size), auto;
  border-radius: 18px;
  padding: 56px 44px;
  position: relative;
  overflow: hidden;
}

.contact-card-glow {
  position: absolute;
  bottom: -120px;
  left: -60px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(var(--purple-rgb), 0.2), transparent 65%);
  filter: blur(10px);
  pointer-events: none;
}

.contact-inner { position: relative; }

.contact-cmd {
  font-size: 14px;
  color: var(--purple);
  margin-bottom: 16px;
}

.contact-heading {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.02;
  margin: 0 0 18px;
}

.contact-sub {
  font-size: 16px;
  line-height: 1.6;
  max-width: 480px;
  color: var(--text-body);
  margin: 0 0 34px;
}

.contact-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.footer {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
  font-size: 12px;
  color: var(--text-faint);
  letter-spacing: 0.04em;
}