/* ==========================================================================
   联信无界 — 详情页扩展样式
   仅供 product-*.html / solution-*.html 使用，补足「价值指标 / 相关案例 / 客户证言」
   三个区块；配色与描边体系完全沿用 css/style.css 的全局令牌。
   ========================================================================== */

/* ---------------------------------------------------------------- 价值指标 */
.metric-grid {
  margin: 48px auto 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.metric-card {
  height: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  padding: 30px 24px;
  text-align: center;
  transition: all .5s;
}

.metric-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 2.9px 11.2px rgba(28, 36, 48, 0.055);
}

.metric-card .m-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.02em;
  background-image: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.metric-card .m-label {
  display: block;
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------------------------------------------------------------- 相关案例 */
.case-grid {
  margin: 48px auto 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.case-card {
  height: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  padding: 28px;
  transition: all .5s;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 2.9px 11.2px rgba(28, 36, 48, 0.055);
}

.case-card .case-tag {
  display: inline-flex;
  align-items: center;
  border-radius: 16px;
  padding: 5px 14px;
  font-size: 11.5px;
  font-weight: 600;
  background-image: var(--grad-soft);
  color: var(--volt-strong);
  box-shadow: inset 0 0 0 1px rgba(123, 92, 240, .18);
}

.case-card h4 {
  margin-top: 18px;
  font-size: 16.5px;
  font-weight: 700;
}

.case-card p {
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--steel);
}

/* ---------------------------------------------------------------- 客户证言 */
.testi-card {
  position: relative;
  margin: 48px auto 0;
  
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  padding: 36px 40px 32px;
}

.testi-card > svg {
  color: var(--azure);
  opacity: .28;
}

.testi-quote {
  margin-top: 18px;
  font-size: 16px;
  line-height: 2;
  color: var(--cream);
}

.testi-person {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px dashed var(--line);
  padding-top: 20px;
}

.testi-ava {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  flex-shrink: 0;
  background-image: var(--grad);
  color: #fff !important;
  font-size: 16px;
  font-weight: 700;
  text-align: center; line-height: 38px;
}

.testi-person b { display: block; font-size: 15px; }
.testi-person span { display: block; margin-top: 3px; font-size: 13px; color: var(--dim); }

/* ---------------------------------------------------------------- 响应式 */
@media (min-width: 768px) {
  .metric-grid { grid-template-columns: repeat(4, 1fr); }
  .case-grid { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
}

@media (max-width: 560px) {
  .metric-card { padding: 24px 18px; }
  .metric-card .m-num { font-size: 28px; }
  .testi-card { padding: 28px 22px 26px; }
  .testi-quote { font-size: 14.5px; }
}