.intro-visual img {
  border-radius: var(--r-lg);
  width: 100%;
  height: 420px;
  object-fit: cover;
}
.pillars {
  padding: 80px 0;
  background: var(--off);
}
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.pillar {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 30px;
  transition: 0.2s;
}
.pillar:hover {
  box-shadow: 0 12px 36px var(--shadow);
  transform: translateY(-3px);
}
.pillar-icon {
  width: 52px;
  height: 52px;
  background: var(--blue-soft);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  margin-bottom: 18px;
}
.pillar-icon svg {
  width: 26px;
  height: 26px;
}
.pillar h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.pillar p {
  font-size: 0.9rem;
  color: var(--ink2);
  line-height: 1.65;
}
.specs-sec {
  padding: 80px 0;
  background: var(--bg);
}
.spec-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.spec-card {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.spec-card-head {
  background: var(--off2);
  padding: 16px 22px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.spec-card-head .sc-ic {
  width: 38px;
  height: 38px;
  background: var(--blue-soft);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  flex-shrink: 0;
}
.spec-card-head .sc-ic svg {
  width: 19px;
  height: 19px;
}
.spec-card-head h3 {
  font-size: 1.05rem;
  font-weight: 700;
}
.spec-card-body {
  padding: 8px 22px 16px;
}
.sc-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
}
.sc-row:last-child {
  border-bottom: none;
}
.sc-k {
  color: var(--mute);
}
.sc-v {
  color: var(--ink);
  font-weight: 600;
  text-align: right;
}
.process {
  padding: 80px 0;
  background: var(--dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.process::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(69, 154, 240, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(69, 154, 240, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
}
.process .wrap {
  position: relative;
  z-index: 1;
}
.process .sh {
  color: #fff;
}
.process .sl {
  color: rgba(255, 255, 255, 0.65);
}
.proc-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 12px;
  position: relative;
}
.proc-step {
  position: relative;
}
.proc-n {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid var(--blue-l);
  background: rgba(2, 117, 237, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--fm);
  font-weight: 600;
  color: var(--blue-l);
  margin-bottom: 16px;
}
.proc-step h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 7px;
}
.proc-step p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.58;
}
.materials {
  padding: 80px 0;
  background: var(--off);
}
.mat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.mat-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 26px;
  text-align: center;
  transition: 0.2s;
}
.mat-card:hover {
  border-color: var(--blue-soft2);
  box-shadow: 0 8px 26px var(--shadow);
}
.mat-code {
  font-family: var(--fm);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--blue);
  margin-bottom: 6px;
}
.mat-name {
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.mat-desc {
  font-size: 0.82rem;
  color: var(--mute);
  line-height: 1.5;
}
@media (max-width: 980px) {
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }
  .intro-visual img {
    height: 300px;
  }
  .pillar-grid {
    grid-template-columns: 1fr;
  }
  .spec-cards {
    grid-template-columns: 1fr;
  }
  .proc-steps {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
  .mat-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 560px) {
  .proc-steps,
  .mat-grid {
    grid-template-columns: 1fr;
  }
}