/* 学序 2.1.1 · 关于页 */

.about-hero {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 20px;
  margin-bottom: 16px;
  overflow: hidden;
  background:
    radial-gradient(520px 200px at 0% 0%, color-mix(in srgb, var(--accent) 11%, transparent), transparent 66%),
    var(--mat-surface, var(--surface));
}

.about-hero-mark img {
  display: block;
  border-radius: 16px;
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.16);
}

.about-kicker {
  color: var(--accent-text);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.14em;
}

.about-hero h2 {
  margin: 4px 0 5px;
  font-size: 21px;
  line-height: 1.3;
  letter-spacing: -0.03em;
}

.about-hero p {
  margin: 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.7;
}

.about-hero-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 3px;
}

.about-muted {
  color: var(--faint);
  font-size: 11px;
  line-height: 1.6;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.about-card {
  padding: 17px;
  min-width: 0;
}

.about-card-title {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 9px;
  color: var(--text);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.about-card-title svg {
  color: var(--accent);
  flex: none;
}

.about-card p {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.75;
}

.about-card p:last-child {
  margin-bottom: 0;
}

.about-list {
  display: grid;
  gap: 6px;
  margin: 0;
}

.about-list > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 6px;
  border-bottom: 0.5px solid var(--mat-hairline-soft, var(--line));
}

.about-list > div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.about-list dt {
  color: var(--muted);
  font-size: 11.5px;
  flex: none;
}

.about-list dd {
  margin: 0;
  color: var(--text);
  font-size: 11.5px;
  font-weight: 560;
  text-align: right;
  overflow-wrap: anywhere;
}

.about-checks,
.about-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 7px;
}

.about-checks li {
  position: relative;
  padding-left: 18px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.about-checks li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.75;
}

.about-steps {
  counter-reset: about-step;
}

.about-steps li {
  counter-increment: about-step;
  position: relative;
  padding-left: 27px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}

.about-steps li::before {
  content: counter(about-step);
  position: absolute;
  left: 0;
  top: 1px;
  display: grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent-text);
  font-size: 10px;
  font-weight: 750;
}

.about-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin: 4px 0 2px;
}

.about-tags span {
  padding: 3px 8px;
  border: 0.5px solid var(--mat-hairline-soft, var(--line));
  border-radius: 999px;
  background: color-mix(in srgb, var(--muted) 4%, var(--mat-surface-2, var(--surface-2)));
  color: var(--muted);
  font-size: 10.5px;
  font-weight: 550;
}

.about-license {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 0.5px solid var(--mat-hairline-soft, var(--line));
}

.about-license summary {
  color: var(--muted);
  font-size: 11.5px;
  cursor: pointer;
}

.about-license p {
  margin-top: 7px;
  font-size: 11px;
}

.about-foot {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 20px 0 6px;
  color: var(--faint);
  font-size: 11px;
}

.about-foot svg {
  color: var(--accent);
  opacity: 0.7;
}

@media (max-width: 760px) {
  .about-hero {
    grid-template-columns: auto minmax(0, 1fr);
    padding: 16px;
  }
  .about-hero-meta {
    grid-column: 1 / -1;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 8px;
  }
  .about-hero h2 {
    font-size: 18px;
  }
  .about-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .about-card {
    padding: 15px;
  }
}