.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  max-width: 1120px;
  margin: 0 auto;
  justify-content: center;
}
.portfolio-card-copy { padding: 18px 18px 20px; }
.portfolio-card-copy h2 { font-size: 1.22rem; margin-bottom: 7px; }
.portfolio-card-copy > p:not(.project-type) { font-size: .92rem; }
.portfolio-section .project-visual { min-height: 168px; }
.systems-note {
  max-width: 720px;
  margin: 0 auto 34px;
  color: var(--text-muted);
  text-align: left;
}
.systems-note p + p { margin-top: 12px; }
.project-letrecord {
  background:
    radial-gradient(circle at 18% 20%, rgba(220, 197, 139, .25), transparent 34%),
    linear-gradient(145deg, #10241b 0%, #1d3a2d 58%, #b99c62 150%);
}
.letrecord-brand {
  position: absolute;
  top: 14px;
  left: 16px;
  display: flex;
  align-items: center;
  gap: 7px;
  color: #f6f1e6;
  font-size: .78rem;
  letter-spacing: -.02em;
}
.letrecord-brand i {
  width: 22px;
  height: 22px;
  border: 1px solid rgba(246, 241, 230, .68);
  border-radius: 50%;
  box-shadow: inset 0 0 0 5px rgba(220, 197, 139, .18);
}
.letrecord-window {
  position: absolute;
  left: 17%;
  right: 8%;
  top: 27%;
  bottom: -12%;
  overflow: hidden;
  border: 1px solid rgba(246, 241, 230, .32);
  border-radius: 10px 10px 0 0;
  background: #f4f1e8;
  box-shadow: 0 18px 35px rgba(3, 12, 8, .35);
}
.letrecord-window-bar {
  height: 18px;
  padding-left: 8px;
  display: flex;
  align-items: center;
  gap: 4px;
  background: #e7e2d6;
}
.letrecord-window-bar span {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #9a927f;
}
.letrecord-sidebar {
  position: absolute;
  top: 18px;
  bottom: 0;
  left: 0;
  width: 22%;
  background: #172820;
}
.letrecord-content {
  position: absolute;
  top: 30px;
  left: 28%;
  right: 8%;
  color: #172820;
  font-size: .55rem;
}
.letrecord-content i {
  display: block;
  height: 13px;
  margin-top: 7px;
  border: 1px solid #d9d2c3;
  border-radius: 3px;
  background: #fff;
}
.letrecord-pack {
  position: absolute;
  right: 8px;
  bottom: 8px;
  padding: 5px 7px;
  border-radius: 4px;
  background: #c3a66d;
  color: #172820;
  font-size: .48rem;
  font-weight: 800;
  letter-spacing: .06em;
}
.letrecord-pack strong { margin-left: 3px; }
.project-instructor {
  background:
    radial-gradient(circle at 22% 28%, rgba(91,230,165,.22), transparent 42%),
    linear-gradient(165deg, #071116 0%, #0e3b38 48%, #0E6B61 100%);
}
.instructor-road {
  position: absolute;
  inset: 28% 12% 22%;
  border-radius: 18px;
  background:
    linear-gradient(#0a1418, #0a1418) padding-box,
    repeating-linear-gradient(90deg, rgba(245,250,248,.55) 0 18px, transparent 18px 32px) border-box;
  border: 1px dashed rgba(245,250,248,.28);
}
.instructor-mark {
  position: absolute;
  left: 18px;
  top: 16px;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: #5be6a5;
  color: #071116;
  font-weight: 800;
  letter-spacing: -.04em;
}
.instructor-device {
  position: absolute;
  right: 16px;
  bottom: 14px;
  width: 58px;
  height: 86px;
  border-radius: 12px;
  border: 1px solid rgba(245,250,248,.28);
  background: linear-gradient(180deg, rgba(14,107,97,.9), #071116);
  box-shadow: 0 10px 24px rgba(0,0,0,.28);
}
.instructor-device::after {
  content: "";
  position: absolute;
  inset: 10px 8px 14px;
  border-radius: 6px;
  background: repeating-linear-gradient(180deg, rgba(91,230,165,.35) 0 6px, transparent 6px 12px);
}
@media (max-width: 980px) {
  .portfolio-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .portfolio-grid { grid-template-columns: 1fr; }
}