/* ===== 选型目录 /catalog/ ===== */

.page-products {
  --pd-hair: rgba(11, 27, 43, 0.14);
  --pd-hair-soft: rgba(11, 27, 43, 0.08);
  --pd-pad: clamp(20px, 2.6vw, 30px);
}

/* ---------- 首屏 ---------- */

.page-products .pd-hero {
  padding: clamp(20px, 4vw, 44px) 0 clamp(40px, 7vw, 84px);
}

.page-products .pd-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 52px);
  align-items: center;
}

.page-products .pd-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(34px, 7.6vw, 74px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--cold-white);
}

.page-products .pd-hero__intro {
  margin: 20px 0 0;
  max-width: 38ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.75;
  color: var(--silver);
}

.page-products .pd-stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 4vw, 46px);
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-products .pd-stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-products .pd-stats__num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4.4vw, 48px);
  font-weight: 700;
  line-height: 1;
  color: var(--cold-white);
}

.page-products .pd-stats__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--silver);
  opacity: 0.76;
}

.page-products .pd-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-products .pd-hero__media {
  margin: 0;
  border: 1px solid var(--line);
  border-top: 2px solid var(--red);
}

.page-products .pd-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

/* ---------- 章节头通用 ---------- */

.page-products .section__head {
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-products .pd-head {
  max-width: 780px;
}

.page-products .pd-head__note {
  margin: 14px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

.page-products .section--paper .pd-head__note {
  color: var(--ink-soft);
}

/* ---------- 01 五大类目录 ---------- */

.page-products .pd-catgrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-products .pd-cat {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: var(--pd-pad);
  background: var(--blue-deep);
  border-top: 2px solid transparent;
  transition: border-color 180ms linear;
}

.page-products .pd-cat:hover {
  border-top-color: var(--red);
}

.page-products .pd-cat__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--red);
}

.page-products .pd-cat__name {
  margin: 0;
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--cold-white);
}

.page-products .pd-cat__count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--silver);
}

.page-products .pd-cat__num {
  margin-right: 6px;
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 700;
  color: var(--brass);
}

.page-products .pd-cat__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--silver);
  opacity: 0.86;
}

.page-products .pd-cat__code {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--silver);
}

.page-products .pd-cat__code code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cold-white);
}

.page-products .pd-cat__media {
  margin: 0 0 6px;
  border: 1px solid var(--line);
}

.page-products .pd-cat__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

@media (min-width: 640px) {
  .page-products .pd-catgrid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1020px) {
  .page-products .pd-catgrid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
  .page-products .pd-cat--a { grid-column: span 3; }
  .page-products .pd-cat--b { grid-column: span 3; }
  .page-products .pd-cat--c { grid-column: span 2; }
  .page-products .pd-cat--d { grid-column: span 2; }
  .page-products .pd-cat--e { grid-column: span 2; }
}

/* ---------- 02 起订档位 ---------- */

.page-products .pd-tiergrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-products .pd-tierchart {
  margin: 0;
  padding: 14px 14px 6px;
  border: 1px solid var(--pd-hair);
  background: rgba(255, 255, 255, 0.42);
  overflow-x: auto;
}

.page-products .pd-tierchart svg {
  display: block;
  width: 100%;
  min-width: 400px;
  height: auto;
}

.page-products .pd-tierchart__axis {
  stroke: var(--pd-hair);
  stroke-width: 1;
}

.page-products .pd-tierchart__grid {
  stroke: var(--pd-hair-soft);
  stroke-width: 1;
  stroke-dasharray: 3 5;
}

.page-products .pd-bar--a { fill: #5C7086; }
.page-products .pd-bar--b { fill: #3B5270; }
.page-products .pd-bar--c { fill: #8A6B18; }
.page-products .pd-bar--d { fill: #C9A227; }
.page-products .pd-bar--e { fill: #E23A2E; }

.page-products .pd-tierchart__val {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  fill: var(--blue-deep);
  text-anchor: middle;
}

.page-products .pd-tierchart__key {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  fill: var(--ink-soft);
  text-anchor: middle;
}

.page-products .pd-tierchart figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--ink-soft);
}

.page-products .pd-tierlist {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--pd-hair);
}

.page-products .pd-tierlist li {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--pd-hair);
}

.page-products .pd-tierlist li:first-child { border-top: none; }

.page-products .pd-tierlist__key {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  color: var(--red);
}

.page-products .pd-tierlist__body { min-width: 0; }

.page-products .pd-tierlist__qty {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--blue-deep);
}

.page-products .pd-tierlist__note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-products .pd-tierfoot {
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 20px 0 0;
  max-width: 62ch;
  border-top: 1px solid var(--pd-hair);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink);
}

@media (min-width: 900px) {
  .page-products .pd-tiergrid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  }
}

/* ---------- 03 横向对比表 ---------- */

.page-products .pd-compare .tabs__panel[hidden] {
  display: none;
}

.page-products .pd-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-products .pd-table caption {
  padding: 0 0 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--red);
}

.page-products .pd-table th,
.page-products .pd-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.page-products .pd-table thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--blue-steel);
  border-bottom: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--silver);
}

.page-products .pd-table tbody tr:nth-child(even) {
  background: rgba(22, 41, 61, 0.55);
}

.page-products .pd-table tbody th {
  padding-left: 14px;
  border-left: 2px solid var(--red);
  font-weight: 700;
  color: var(--cold-white);
  white-space: nowrap;
}

.page-products .pd-table tbody td {
  line-height: 1.72;
  color: var(--silver);
}

/* ---------- 04 认证与安装 ---------- */

.page-products .pd-cert__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 46px);
  align-items: start;
}

.page-products .pd-cert__media {
  margin: 0;
  border: 1px solid var(--pd-hair);
}

.page-products .pd-cert__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-products .pd-cert__accordion .accordion__item {
  border-bottom: 1px solid var(--pd-hair);
}

.page-products .pd-cert__accordion .accordion__item:first-child {
  border-top: 1px solid var(--pd-hair);
}

.page-products .pd-cert__accordion .accordion__trigger {
  color: var(--blue-deep);
}

.page-products .pd-cert__accordion .accordion__panel p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

@media (min-width: 900px) {
  .page-products .pd-cert__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  }
}

/* ---------- 05 资料 ---------- */

.page-products .pd-kit__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-products .pd-kit__lead {
  margin: 16px 0 24px;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
}

.page-products .pd-kit__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .pd-kit__list li {
  padding: 18px 20px;
  background: var(--blue-steel);
  border: 1px solid var(--line);
  border-left: 2px solid var(--brass);
  transition: border-left-color 180ms linear;
}

.page-products .pd-kit__list li:hover {
  border-left-color: var(--red);
}

.page-products .pd-kit__title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--cold-white);
}

.page-products .pd-kit__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--silver);
}

@media (min-width: 900px) {
  .page-products .pd-kit__grid {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  }
}

/* ---------- 06 避坑与节奏 ---------- */

.page-products .pd-pitfall__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 30px);
}

.page-products .pd-myth {
  padding: 20px 0 0;
  border-top: 2px solid var(--red);
}

.page-products .pd-myth__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--warn);
}

.page-products .pd-myth h3 {
  margin: 8px 0 10px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--cold-white);
}

.page-products .pd-myth p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--silver);
}

.page-products .pd-lead-time {
  margin-top: clamp(30px, 5vw, 52px);
  padding: clamp(20px, 3vw, 32px);
  background: var(--blue-steel);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--brass);
}

.page-products .pd-lead-time__title {
  margin: 0 0 16px;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--cold-white);
}

.page-products .pd-lead-time__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-products .pd-lead-time__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--silver);
}

.page-products .pd-lead-time__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 2px;
  background: var(--red);
}

.page-products .pd-lead-time__more {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--silver);
}

.page-products .pd-lead-time__more a {
  color: var(--std-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-bottom-color 240ms linear;
}

.page-products .pd-lead-time__more a:hover {
  border-bottom-color: var(--std-blue);
}

@media (min-width: 760px) {
  .page-products .pd-pitfall__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 窄屏收口 ---------- */

@media (max-width: 560px) {
  .page-products .pd-hero__actions .btn {
    flex: 1 1 100%;
    text-align: center;
  }

  .page-products .pd-tierlist li {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 10px;
  }

  .page-products .pd-tierlist__key {
    font-size: 22px;
  }

  .page-products .pd-tierchart {
    padding: 10px 10px 4px;
  }
}