/* ---------- 关于 ---------- */

.about-body {
  max-width: 800px;
  margin-left: auto;
  padding-left: 40px;
  border-left: 1px solid var(--line);
}

.about-body p {
  color: var(--muted);
  font-size: 16px;
  margin-bottom: 18px;
}

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

.about-body strong {
  color: var(--ink);
  font-weight: 600;
}

/* ---------- 服务 ---------- */

.wide-title {
  max-width: 20ch;
  margin-bottom: 46px;
}

.card-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 44px 44px;
}

.card {
  border-top: 1px solid var(--ink);
  padding: 24px 0 34px;
}

.card-icon {
  display: block;
  width: 34px;
  height: 34px;
  color: var(--accent);
}

.card-icon svg {
  width: 34px;
  height: 34px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card h3 {
  font-size: 18px;
  margin: 18px 0 10px;
}

.card p {
  font-size: 15px;
  color: var(--muted);
}

/* ---------- 流程 ---------- */

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 36px;
}

.steps li {
  border-top: 1px dashed var(--line);
  padding-top: 20px;
}

.step-no {
  display: block;
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 16px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

@supports (-webkit-text-stroke: 1px #000) {
  .step-no {
    color: transparent;
    -webkit-text-stroke: 1px var(--accent);
  }
}

.steps h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.steps p {
  font-size: 14.5px;
  color: var(--muted);
}

/* ---------- 优势 ---------- */

.adv-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 64px;
  align-items: start;
}

.adv-copy p {
  color: var(--muted);
  font-size: 16px;
  max-width: 46ch;
}

.adv-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.adv-list li {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.adv-list li:first-child {
  border-top: 2px solid var(--ink);
}

.adv-list h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.adv-list p {
  font-size: 14.5px;
  color: var(--muted);
}

/* ---------- 评价 ---------- */

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.review {
  margin: 0;
  padding: 30px 28px;
  background: #fafaf8;
  border: 1px solid var(--line);
}

.review p {
  font-size: 15px;
  color: var(--ink);
  line-height: 1.85;
}

.review cite {
  display: block;
  margin-top: 20px;
  font-style: normal;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 联系 ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 64px;
  align-items: start;
}

.contact-copy p {
  color: var(--muted);
  font-size: 16px;
  max-width: 44ch;
}

.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.contact-list li {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 18px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  align-items: baseline;
}

.contact-key {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.contact-val {
  font-size: 16px;
  font-weight: 600;
  word-break: break-all;
}

/* ---------- 响应式 ---------- */

@media (max-width: 960px) {
  .about-body {
    margin-left: 0;
    padding-left: 24px;
  }

  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 32px;
  }

  .adv-grid,
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
  }

  .review-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }
}

@media (max-width: 600px) {
  .about-body {
    padding-left: 18px;
  }

  .card-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .card {
    padding-bottom: 26px;
  }

  .steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-list li {
    grid-template-columns: 60px minmax(0, 1fr);
  }

  .review {
    padding: 24px 20px;
  }
}