/* ============================================
   YX-YP 电路板 · 3D 实拍模型展示
   配套 pages: products/yxyp-3d.html（独立页）
                index.html（首页板块，懒加载）
   ============================================ */

.pcb3d-hero {
  padding: calc(var(--space-8) + 16px) 0 var(--space-8);
  background:
    radial-gradient(900px 480px at 22% -10%, rgba(0, 180, 255, 0.16), transparent 62%),
    radial-gradient(700px 420px at 92% 8%, rgba(230, 0, 18, 0.10), transparent 60%),
    var(--bg-base);
  border-bottom: 1px solid var(--border);
}

.pcb3d-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: var(--space-8);
  align-items: center;
}

.pcb3d-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.pcb3d-eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--accent);
  opacity: 0.7;
}

.pcb3d-title {
  font-size: clamp(28px, 4.2vw, 46px);
  line-height: 1.18;
  font-weight: 700;
  color: var(--text-1);
  margin: 0 0 var(--space-4);
  letter-spacing: -0.01em;
}
.pcb3d-title span {
  display: block;
  font-size: 0.48em;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--text-3);
  margin-top: 10px;
}

.pcb3d-lead {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-2);
  max-width: 52ch;
  margin: 0 0 var(--space-5);
}

.pcb3d-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: var(--space-5);
}
.pcb3d-fact {
  background: var(--bg-card);
  padding: 14px 16px;
}
.pcb3d-fact b {
  display: block;
  font-size: 16px;
  color: var(--text-1);
  font-weight: 600;
  margin-bottom: 4px;
  white-space: nowrap;
}
.pcb3d-fact span {
  font-size: 11.5px;
  color: var(--text-3);
  letter-spacing: 0.04em;
}

.pcb3d-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------------- 3D 视口 ---------------- */
/* CHG-PCB3D-BG-001: 科技元素背景图 (CHG-PCB3D-BG-001)
   背景图已后处理: 1920 宽 JPEG + 中心径向压暗 (模型区让位) + 轻微高斯模糊
   三处舞台 (首页 mvHome / 3D 页 mvHero / mvMain) 共用本样式 */
.pcb3d-stage {
  position: relative;
  border: 1px solid var(--border-strong);
  border-radius: 16px;
  overflow: hidden;
  background-color: #07080C;
  background-image:
    radial-gradient(760px 420px at 50% 8%, rgba(0, 180, 255, 0.10), transparent 66%),
    linear-gradient(180deg, rgba(9, 11, 17, 0.34) 0%, rgba(6, 7, 11, 0.62) 100%),
    url("../assets/pcb/yxyp-3d/bg-tech-a.jpg");
  background-repeat: no-repeat;
  background-position: center, center, center center;
  background-size: cover, cover, cover;
  box-shadow: var(--shadow-lg);
}

.pcb3d-stage model-viewer {
  display: block;
  width: 100%;
  height: 520px;
  background: transparent;
  --poster-color: transparent;
  --progress-bar-color: var(--accent);
  --progress-mask: transparent;
}
.pcb3d-stage.sm model-viewer { height: 380px; }

.pcb3d-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-3);
  pointer-events: none;
  transition: opacity 0.4s ease;
}
.pcb3d-loading.hide { opacity: 0; visibility: hidden; }

.pcb3d-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-top: 1px solid var(--border);
  background: rgba(10, 12, 18, 0.86);
  backdrop-filter: blur(6px);
}
.pcb3d-bar button {
  appearance: none;
  border: 1px solid var(--border-strong);
  background: var(--bg-card);
  color: var(--text-2);
  font-size: 13px;
  font-family: inherit;
  padding: 7px 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.16s ease;
}
.pcb3d-bar button:hover { border-color: var(--border-accent); color: var(--text-1); }
.pcb3d-bar button.on { background: var(--tag-bg-accent); border-color: var(--border-accent); color: var(--accent); }
.pcb3d-hint {
  margin-left: auto;
  font-size: 12px;
  color: var(--text-4);
}

/* ---------------- 相机运镜控制 (CHG-PCB3D-ANIM-001) ---------------- */
.pcb3d-bar select.pcb3d-cine-select {
  appearance: none;
  -webkit-appearance: none;
  border: 1px solid var(--border-strong);
  background-color: var(--bg-card);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%237A8194' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 11px center;
  color: var(--text-2);
  font-size: 13px;
  font-family: inherit;
  line-height: 1.4;
  padding: 7px 32px 7px 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 0.16s ease, color 0.16s ease;
  max-width: 100%;
}
.pcb3d-bar select.pcb3d-cine-select:hover { border-color: var(--border-accent); color: var(--text-1); }
.pcb3d-bar select.pcb3d-cine-select:focus { outline: none; border-color: var(--accent); color: var(--text-1); }
.pcb3d-bar select.pcb3d-cine-select:disabled { opacity: 0.45; cursor: not-allowed; }
.pcb3d-bar select.pcb3d-cine-select option { background: #14171F; color: #C9D0E0; }

.pcb3d-cine {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  padding: 12px 14px;
  border-top: 1px solid var(--border);
  background: rgba(7, 8, 12, 0.74);
}
.pcb3d-cine-field {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 12.5px;
  color: var(--text-3);
  letter-spacing: 0.02em;
}
.pcb3d-cine-range {
  -webkit-appearance: none;
  appearance: none;
  width: 128px;
  height: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  outline: none;
  cursor: pointer;
  margin: 0;
}
.pcb3d-cine-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #0B0E14;
  box-shadow: 0 0 0 1px rgba(0, 180, 255, 0.45);
  cursor: pointer;
}
.pcb3d-cine-range::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #0B0E14;
  cursor: pointer;
}
.pcb3d-cine-range:disabled { opacity: 0.45; cursor: not-allowed; }
.pcb3d-cine-val {
  min-width: 54px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.pcb3d-cine-check {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  color: var(--text-2);
  cursor: pointer;
  user-select: none;
}
.pcb3d-cine-check input {
  width: 15px;
  height: 15px;
  accent-color: var(--accent);
  cursor: pointer;
  margin: 0;
}
.pcb3d-cine-check input:disabled { cursor: not-allowed; }
.pcb3d-cine-stop {
  appearance: none;
  border: 1px solid var(--border-strong);
  background: var(--bg-card);
  color: var(--text-2);
  font-size: 13px;
  font-family: inherit;
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 0.16s ease, color 0.16s ease;
}
.pcb3d-cine-stop:hover { border-color: var(--border-accent); color: var(--text-1); }
.pcb3d-cine-stop:disabled { opacity: 0.45; cursor: not-allowed; }
.pcb3d-cine-status {
  margin: 0 0 0 auto;
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.02em;
}
.pcb3d-cine-status.playing { color: var(--accent); }
/* 脚本版本标识 (CHG-PCB3D-ANIM-001 R3): 便于确认浏览器拿到的是最新代码 */
.pcb3d-cine-ver {
  font-size: 11px;
  color: var(--text-4);
  letter-spacing: 0.04em;
  opacity: 0.85;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* ---------------- 真实性说明 ---------------- */
.pcb3d-truth {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-card);
  overflow: hidden;
}
.pcb3d-truth table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
.pcb3d-truth th,
.pcb3d-truth td {
  text-align: left;
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.pcb3d-truth tr:last-child th,
.pcb3d-truth tr:last-child td { border-bottom: none; }
.pcb3d-truth thead th {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-3);
  font-weight: 600;
  background: var(--bg-elevated);
}
.pcb3d-truth tbody th { color: var(--text-1); font-weight: 600; width: 26%; }
.pcb3d-truth td { color: var(--text-2); }
.pcb3d-yes { color: #2BD4A8; }
.pcb3d-no { color: var(--warn); }
.pcb3d-note {
  padding: 14px 16px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-3);
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
}

/* ---------------- 照片墙 ---------------- */
.pcb3d-photos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-4);
}
.pcb3d-photo {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-card);
  transition: border-color 0.18s ease, transform 0.18s ease;
}
.pcb3d-photo:hover { border-color: var(--border-accent); transform: translateY(-2px); }
.pcb3d-photo img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--bg-elevated);
}
.pcb3d-photo figcaption {
  padding: 10px 14px;
  font-size: 12.5px;
  color: var(--text-3);
  border-top: 1px solid var(--border);
}

/* ---------------- 下载 ---------------- */
.pcb3d-files {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: var(--space-3);
}
.pcb3d-file {
  display: block;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-card);
  padding: 16px 18px;
  text-decoration: none;
  transition: border-color 0.18s ease, background 0.18s ease;
}
.pcb3d-file:hover { border-color: var(--border-accent); background: var(--bg-card-hover); }
.pcb3d-file b { display: block; color: var(--text-1); font-size: 14.5px; margin-bottom: 5px; }
.pcb3d-file span { display: block; color: var(--text-3); font-size: 12px; line-height: 1.7; }
.pcb3d-file i { display: block; color: var(--accent); font-style: normal; font-size: 12px; margin-top: 8px; }

/* ---------------- 窄屏 ---------------- */
@media (max-width: 900px) {
  .pcb3d-hero-grid { grid-template-columns: 1fr; gap: var(--space-6); }
  .pcb3d-stage model-viewer { height: 400px; }
  .pcb3d-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .pcb3d-stage model-viewer { height: 320px; }
  .pcb3d-stage.sm model-viewer { height: 300px; }
  .pcb3d-hint { margin-left: 0; width: 100%; }
  /* 运镜下拉在窄屏独占一行，避免和四个按钮挤在一起把文字压变形 */
  .pcb3d-bar select.pcb3d-cine-select { width: 100%; }
  .pcb3d-cine { gap: 10px 14px; padding: 12px; }
  .pcb3d-cine-range { width: 112px; }
  .pcb3d-cine-status { margin-left: 0; width: 100%; }
  .pcb3d-truth tbody th { width: auto; }
  .pcb3d-truth thead { display: none; }
  .pcb3d-truth tr { display: block; padding: 4px 0; }
  .pcb3d-truth th, .pcb3d-truth td { display: block; border-bottom: none; }
  .pcb3d-truth tbody th { padding-bottom: 2px; }
  /* 堆叠后 thead 被隐藏，用 data-label 补回列标题，否则只剩孤零零的「是」 */
  .pcb3d-truth td::before {
    content: attr(data-label);
    display: block;
    font-size: 11px;
    letter-spacing: 0.08em;
    color: var(--text-3);
    margin-bottom: 3px;
  }
}