/**
 * PCB 中心页 · 段2 制造路线选择
 *
 * 数值取自 Figma 实测：标题 #14363F 40px/73（居中）；副标题 #008C11 24px/54；
 * 正文 #666666 18px/27（宽 1272）；按钮 394×69（白底 / 圆角 8 / 描边 #CCE0D7），文字 #14363F 20px；
 * 卡片 526×409（白底 / 圆角 20 / 描边 #CCE0D7，列间距 31）；
 * 卡片顶部区 526×179（fill #ECF7EF / 上圆角 20 / 下描边 #B8D8BC），插图 400×160；
 * 卡副标 #008C11 14px/28；卡标题 #14363F 20px/28；卡说明 #97A29C 14px/18（466 宽）；卡 CTA #008C11 14px。
 */

.pcb-route {
  padding-block: 90px 96px;
  background: #ffffff;
}

.pcb-route__inner {
  max-width: 1718px /* = 设计稿内容宽 1638 + 左右各 40 padding */;
  margin: 0 auto;
  padding: 0 40px;
}

.pcb-route__title {
  margin: 0;
  font-family: var(--pcb-font-display);
  font-size: 40px;
  font-weight: 900;
  line-height: 73px;
  text-align: center;
  color: #14363f;
}

.pcb-route__subtitle {
  margin: 0 0 8px;
  font-size: 24px;
  font-weight: 700;
  line-height: 54px;
  text-align: center;
  color: #008c11;
}

.pcb-route__body {
  max-width: 1272px;
  margin: 0 auto 42px;
  font-size: 18px;
  line-height: 27px;
  text-align: center;
  color: #666666;
}

.pcb-route__actions {
  display: flex;
  justify-content: center;
  margin-bottom: 62px;
}

/* 按钮：白底 + 浅绿描边 + 右侧绿块箭头 */
.pcb-route__cta {
  display: inline-flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  min-width: 394px;
  min-height: 69px;
  padding: 0 16px 0 26px;
  font-size: 20px;
  font-weight: 600;
  color: #14363f;
  text-decoration: none;
  background: #ffffff;
  border: 1px solid #cce0d7;
  border-radius: 8px;
  transition: box-shadow 0.24s ease, transform 0.24s ease;
}

.pcb-route__cta-dot {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 38px;
  height: 38px;
  color: #ffffff;
  background: #008c11;
  border-radius: 6px;
}

.pcb-route__cta-dot svg { width: 16px; height: 16px; }

.pcb-route__cta:hover {
  box-shadow: 0 14px 30px rgba(4, 62, 48, 0.1);
  transform: translateY(-2px);
}

/* ── 6 张卡片（3 列 × 2 行，526 宽，间距 31）────────── */

.pcb-route__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 526px));
  gap: 31px;
  justify-content: center;
  max-width: 1720px;
  margin: 0 auto;
}

.pcb-route-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #ffffff;
  border: 1px solid #cce0d7;
  border-radius: 20px;
  transition: box-shadow 0.24s ease, transform 0.24s ease;
}

.pcb-route-card:hover {
  box-shadow: 0 18px 40px rgba(4, 62, 48, 0.09);
  transform: translateY(-4px);
}

/* 顶部浅绿区（1:458） */
.pcb-route-card__media {
  display: grid;
  place-items: center;
  height: 179px;
  margin: 0;
  background: #ecf7ef;
  border-bottom: 1px solid #b8d8bc;
}

.pcb-route-card__media img {
  width: auto;
  /* 取 min(设计稿 400, 卡片可用宽) —— 窄屏卡宽小于插图宽时会被卡片裁切 */
  max-width: min(400px, 100%);
  height: auto;
  max-height: 160px;
}

/* ── 卡片插图（内联 SVG，线路流动动画）──────────────────
 * 图形与色板取自客户交互演示 #sh-types 的 .sh-pcb-svg：
 *   板 #086843 / 描边 #19ae62；背面板 #054a37 / #2bbd72；
 *   介质层 #d9e7df / #9abaae；铜箔 #e3b660；信号 #63e8dc；
 *   安装孔 #d8b46a / #fff7dc；过孔 #062f25 / #efc76f。
 * 尺寸：设计稿插图框 400×160，这里按高度 160 自适应（viewBox 保持 2.42 比例）。
 */

.pcb-route-card__media .pcb-route-card__illus {
  width: auto;
  max-width: min(400px, 100%);
  height: 160px;
}

.pcb-route-card__illus .board { fill: #086843; stroke: #19ae62; stroke-width: 2; }
.pcb-route-card__illus .board-back { fill: #054a37; stroke: #2bbd72; stroke-width: 1.5; }
.pcb-route-card__illus .core { fill: #d9e7df; stroke: #9abaae; stroke-width: 1; }
.pcb-route-card__illus .copper { fill: none; stroke: #e3b660; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.pcb-route-card__illus .signal { fill: none; stroke: #63e8dc; stroke-width: 2.4; stroke-linecap: round; }
.pcb-route-card__illus .hole { fill: #d8b46a; stroke: #fff7dc; stroke-width: 1.5; }
.pcb-route-card__illus .via { fill: #062f25; stroke: #efc76f; stroke-width: 2; }
.pcb-route-card__illus .pcb-label {
  fill: #ffffff;
  font-family: var(--pcb-font-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.09em;
}

/* 线路流动：虚线偏移循环，表现电流沿铜箔 / 信号线推进 */
.pcb-route-card__illus .trace-flow {
  stroke-dasharray: 5 7;
  animation: pcb-route-flow 5s linear infinite;
}

@keyframes pcb-route-flow {
  to { stroke-dashoffset: -120; }
}

/* 叠层分离：多层结构的图层在卡片悬停时上下分开 */
.pcb-route-card__illus .float-a,
.pcb-route-card__illus .float-b {
  transition: transform 0.28s ease;
}

@media (hover: hover) {
  .pcb-route-card:hover .pcb-route-card__illus .float-a { transform: translateY(-4px); }
  .pcb-route-card:hover .pcb-route-card__illus .float-b { transform: translateY(4px); }
}

.pcb-route-card__body {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  padding: 20px 25px 24px;
}

.pcb-route-card__eyebrow {
  display: block;
  margin-bottom: 4px;
  font-size: 14px;
  line-height: 28px;
  color: #008c11;
}

.pcb-route-card__title {
  margin: 0 0 10px;
  font-size: 20px;
  /* 设计稿两页都是 Outfit SemiBold(600)：PCB 1:469 / PCBA 1:688，
     原写 700 会让标题比设计稿粗一档。 */
  font-weight: 600;
  line-height: 28px;
  color: #14363f;
}

.pcb-route-card__text {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 18px;
  color: #97a29c;
}

.pcb-route-card__link {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  font-size: 14px;
  color: #008c11;
  text-decoration: none;
}

/* 设计稿两页的卡片链接文案都是 Outfit SemiBold(600) + 下划线：
   PCB 1:487 / PCBA 1:697。下划线只加在文字上，不加到右侧箭头圆。 */
.pcb-route-card__link span {
  font-weight: 600;
  text-decoration: underline;
}

.pcb-route-card__link-dot {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 26px;
  height: 26px;
  color: #ffffff;
  background: #008c11;
  border-radius: 50%;
  transition: transform 0.24s ease;
}

.pcb-route-card__link-dot svg { width: 12px; height: 12px; }

.pcb-route-card__link:hover .pcb-route-card__link-dot { transform: translateX(3px); }

/* ── 响应式 ─────────────────────────────────────────── */

@media (max-width: 1500px) {
  .pcb-route__title { font-size: 34px; line-height: 62px; }
  .pcb-route__subtitle { font-size: 21px; line-height: 46px; }
  .pcb-route__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
  .pcb-route-card__media { height: 156px; }
  .pcb-route-card__media img { max-width: min(330px, 100%); max-height: 136px; }
  .pcb-route-card__media .pcb-route-card__illus { max-width: min(330px, 100%); height: 136px; }
}

@media (max-width: 1080px) {
  .pcb-route { padding-block: 62px 72px; }
  .pcb-route__title { font-size: 26px; line-height: 46px; }
  .pcb-route__subtitle { font-size: 18px; line-height: 34px; }
  .pcb-route__body { font-size: 16px; line-height: 25px; margin-bottom: 32px; }
  .pcb-route__actions { margin-bottom: 42px; }
  .pcb-route__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
}

@media (max-width: 720px) {
  .pcb-route__cta { min-width: 0; width: 100%; font-size: 17px; }
  .pcb-route__grid { grid-template-columns: minmax(0, 1fr); }
  .pcb-route-card__body { padding: 18px 20px 20px; }
}

/* ── 降低动效偏好：停掉线路流动与叠层位移 ─────────────── */
@media (prefers-reduced-motion: reduce) {
  .pcb-route-card__illus .trace-flow { animation: none; }

  .pcb-route-card__illus .float-a,
  .pcb-route-card__illus .float-b { transition: none; }

  .pcb-route-card:hover .pcb-route-card__illus .float-a,
  .pcb-route-card:hover .pcb-route-card__illus .float-b { transform: none; }
}