.page-products {
  --pd-shadow: 0 12px 28px rgba(6, 42, 50, .12), 0 2px 0 rgba(6, 42, 50, .05);
  --pd-shadow-deep: 0 18px 40px rgba(6, 42, 50, .34);
  --pd-body: #3B4A4C;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
}

/* ---------- 首屏 ---------- */
.page-products .pd-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 40px) 0 clamp(34px, 6vw, 72px);
  color: var(--paper);
  background:
    radial-gradient(120% 90% at 88% 6%, rgba(44, 154, 140, .30), transparent 58%),
    radial-gradient(90% 70% at 4% 96%, rgba(183, 69, 47, .22), transparent 60%),
    linear-gradient(158deg, var(--ink-deep), var(--lane) 72%, #0A333C);
}

.page-products .pd-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 8px;
  background: repeating-linear-gradient(90deg, var(--gold) 0 2px, transparent 2px 14px);
  opacity: .55;
}

.page-products .pd-hero .crumbs a,
.page-products .pd-hero .crumbs span {
  color: rgba(247, 242, 231, .78);
}

.page-products .pd-hero .crumbs [aria-current="page"] {
  color: var(--gold);
}

.page-products .pd-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: 20px;
}

.page-products .pd-hero__kicker {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--gold);
}

.page-products .pd-hero h1 {
  margin: 0 0 16px;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(30px, 5.2vw, 54px);
  line-height: 1.16;
  letter-spacing: .01em;
}

.page-products .pd-hero__intro {
  max-width: 36em;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(247, 242, 231, .86);
}

.page-products .pd-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-products .pd-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 26px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px dashed var(--light-line);
  font-size: 13px;
  color: rgba(247, 242, 231, .8);
}

.page-products .pd-hero__facts b {
  margin-right: 6px;
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 600;
  color: var(--gold);
}

/* 两端速览切换框 */
.page-products .pd-switch {
  padding: 18px 18px 16px;
  border: 1px solid rgba(231, 178, 74, .42);
  background: rgba(6, 42, 50, .55);
  box-shadow: var(--pd-shadow-deep);
}

.page-products .pd-switch__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--light-line);
}

.page-products .pd-switch__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-products .pd-switch__btns {
  display: flex;
  gap: 6px;
}

.page-products .tab {
  padding: 6px 14px;
  font-family: var(--sans);
  font-size: 13px;
  color: rgba(247, 242, 231, .82);
  background: transparent;
  border: 1px solid rgba(247, 242, 231, .3);
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease);
}

.page-products .tab[aria-selected="true"] {
  color: var(--ink-deep);
  background: var(--gold);
  border-color: var(--gold);
}

.page-products .pd-switch__panel {
  margin-top: 12px;
}

.page-products .pd-switch__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pd-switch__list li {
  position: relative;
  padding: 9px 0 9px 24px;
  font-size: 14px;
  line-height: 1.65;
  color: rgba(247, 242, 231, .9);
  border-bottom: 1px dashed rgba(247, 242, 231, .14);
}

.page-products .pd-switch__list li:last-child {
  border-bottom: 0;
}

.page-products .pd-switch__list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--gold);
}

.page-products .pd-switch__foot {
  margin: 14px 0 0;
  font-size: 13px;
  color: rgba(247, 242, 231, .72);
}

.page-products .pd-switch__foot a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(231, 178, 74, .6);
}

/* ---------- 章节索引 ---------- */
.page-products .pd-index {
  position: sticky;
  top: var(--header-offset);
  z-index: 6;
  background: rgba(247, 242, 231, .96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}

.page-products .pd-toc {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-products .pd-toc::-webkit-scrollbar {
  display: none;
}

.page-products .pd-toc__link {
  flex: 0 0 auto;
  padding: 5px 11px;
  font-size: 13px;
  color: var(--ink);
  text-decoration: none;
  background: var(--card-paper);
  border: 1px solid var(--line);
  transition: background .2s var(--ease), border-color .2s var(--ease);
}

.page-products .pd-toc__link:hover,
.page-products .pd-toc__link[aria-current="true"] {
  color: var(--ink-deep);
  background: var(--paper-gold);
  border-color: var(--gold);
}

/* ---------- 章节头 ---------- */
.page-products .pd-sec {
  padding: clamp(40px, 6vw, 74px) 0;
}

.page-products .pd-sec--mist {
  background: linear-gradient(180deg, rgba(245, 228, 184, .42), rgba(247, 242, 231, 0) 82%);
}

.page-products .pd-sec--deep {
  background: linear-gradient(170deg, var(--ink-deep), var(--lane));
  color: var(--paper);
}

.page-products .pd-chap {
  margin-bottom: 28px;
  padding-left: 18px;
  border-left: 3px solid var(--gold);
}

.page-products .pd-chap__num {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 13px;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--ink-deep);
  background: var(--gold);
}

.page-products .pd-chap__title {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(23px, 3.2vw, 38px);
  line-height: 1.24;
  color: var(--ink-deep);
}

.page-products .pd-chap__lead {
  max-width: 48em;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--pd-body);
}

.page-products .pd-chap--deep .pd-chap__title {
  color: var(--paper);
}

.page-products .pd-chap--deep .pd-chap__lead {
  color: rgba(247, 242, 231, .84);
}

/* ---------- 图片 ---------- */
.page-products .pd-fig {
  margin: 0 0 26px;
}

.page-products .pd-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line-strong);
  background: var(--lane);
}

.page-products .pd-sec--deep .pd-fig img {
  border-color: var(--light-line);
}

.page-products .pd-fig--inline {
  margin: 0;
  align-self: stretch;
}

.page-products .pd-fig--inline img {
  height: 100%;
}

/* ---------- 01 四类总览 ---------- */
.page-products .pd-cat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-products .pd-cat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 18px;
  background: var(--ink-deep);
  border: 1px solid rgba(231, 178, 74, .32);
  box-shadow: 6px 6px 0 rgba(231, 178, 74, .26), var(--pd-shadow);
}

.page-products .pd-cat__num {
  font-size: 26px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-products .pd-cat__name {
  margin: 0;
  font-family: var(--serif);
  font-size: 19px;
  color: var(--paper);
}

.page-products .pd-cat__count {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--turquoise);
}

.page-products .pd-cat__desc {
  flex: 1;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(247, 242, 231, .82);
}

.page-products .pd-cat__go {
  align-self: flex-start;
  padding-bottom: 2px;
  font-size: 13px;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(231, 178, 74, .55);
}

.page-products .pd-cat__go:hover {
  color: var(--paper-gold);
}

/* ---------- 02 / 03 / 05 卡片流 ---------- */
.page-products .pd-flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-products .pd-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 16px 14px;
  background: var(--card-paper);
  border: 1px solid var(--line);
  border-left: 3px solid var(--turquoise);
  box-shadow: var(--pd-shadow);
}

.page-products .pd-card__num {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--muted);
}

.page-products .pd-card__title {
  margin: 0;
  font-family: var(--serif);
  font-size: 17px;
  color: var(--ink-deep);
}

.page-products .pd-card__desc {
  flex: 1;
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--pd-body);
}

.page-products .pd-card__go {
  align-self: flex-start;
  padding: 5px 12px;
  font-size: 13px;
  color: var(--ink-deep);
  text-decoration: none;
  background: rgba(231, 178, 74, .12);
  border: 1px solid var(--gold);
  transition: background .2s var(--ease);
}

.page-products .pd-card__go:hover {
  background: var(--gold);
}

/* ---------- 04 服务层级 ---------- */
.page-products .pd-scale {
  display: block;
  width: 100%;
  height: auto;
  margin: 0 0 24px;
}

.page-products .pd-tiers {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-products .pd-tier-list {
  display: grid;
  gap: 14px;
}

.page-products .pd-tier {
  padding: 18px;
  background: var(--card-paper);
  border: 1px solid var(--line);
  box-shadow: var(--pd-shadow);
}

.page-products .pd-tier:nth-child(1) {
  border-left: 3px solid var(--turquoise);
}

.page-products .pd-tier:nth-child(2) {
  border-left: 3px solid var(--gold);
}

.page-products .pd-tier:nth-child(3) {
  border-left: 3px solid var(--brick);
}

.page-products .pd-tier__name {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 20px;
  color: var(--ink-deep);
}

.page-products .pd-tier__badge {
  padding: 2px 8px;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--ink-deep);
  background: var(--paper-gold);
}

.page-products .pd-tier__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--pd-body);
}

.page-products .pd-tier__more {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}

.page-products .pd-tier__more summary {
  font-size: 13px;
  color: var(--lane);
  cursor: pointer;
}

.page-products .pd-tier__more p {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 06 对照表 ---------- */
.page-products .pd-compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-products .pd-compare__table {
  overflow-x: auto;
  background: var(--card-paper);
  border: 1px solid var(--line-strong);
}

.page-products .pd-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: 13.5px;
}

.page-products .pd-table caption {
  padding: 12px 14px;
  font-size: 13px;
  text-align: left;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

.page-products .pd-table th,
.page-products .pd-table td {
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.page-products .pd-table thead th {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--paper);
  background: var(--ink-deep);
}

.page-products .pd-table tbody tr:nth-child(even) {
  background: rgba(44, 154, 140, .07);
}

.page-products .pd-table tbody tr:hover {
  background: rgba(231, 178, 74, .12);
}

.page-products .pd-table td:first-child {
  font-weight: 600;
  color: var(--ink-deep);
}

.page-products .pd-diff {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11.5px;
  white-space: nowrap;
  color: #A63F13;
  background: rgba(240, 112, 63, .14);
  border: 1px solid var(--coral);
}

.page-products .pd-diff--same {
  color: #1D6E63;
  background: rgba(44, 154, 140, .14);
  border-color: var(--turquoise);
}

.page-products .pd-compare__note {
  margin: 20px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(247, 242, 231, .8);
}

.page-products .pd-compare__note a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(231, 178, 74, .55);
}

/* ---------- 07 流程 ---------- */
.page-products .pd-flow-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.page-products .pd-flow-nav__link {
  padding: 5px 12px;
  font-size: 13px;
  color: var(--ink-deep);
  text-decoration: none;
  background: rgba(231, 178, 74, .12);
  border: 1px solid var(--gold);
  transition: background .2s var(--ease);
}

.page-products .pd-flow-nav__link:hover {
  background: var(--paper-gold);
}

.page-products .pd-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pd-step {
  position: relative;
  padding: 18px;
  background: var(--card-paper);
  border: 1px solid var(--line);
  box-shadow: var(--pd-shadow);
}

.page-products .pd-step__num {
  display: inline-block;
  margin-bottom: 12px;
  padding: 2px 10px;
  font-size: 22px;
  font-weight: 600;
  color: var(--ink-deep);
  background: var(--gold);
}

.page-products .pd-step__title {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 17px;
  color: var(--ink-deep);
}

.page-products .pd-step__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--pd-body);
}

.page-products .pd-step__desc a {
  color: var(--brick);
  text-decoration: none;
  border-bottom: 1px solid rgba(183, 69, 47, .45);
}

/* ---------- 收尾 ---------- */
.page-products .pd-outro {
  padding: clamp(36px, 6vw, 66px) 0;
  color: var(--paper);
  background:
    radial-gradient(80% 120% at 92% 0%, rgba(231, 178, 74, .18), transparent 60%),
    linear-gradient(120deg, var(--ink-deep), var(--lane));
}

.page-products .pd-outro__inner {
  display: grid;
  gap: 16px;
}

.page-products .pd-outro h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.24;
}

.page-products .pd-outro p {
  max-width: 50em;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(247, 242, 231, .85);
}

.page-products .pd-outro__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

.page-products .pd-outro .btn--ghost {
  color: var(--paper);
  border-color: rgba(247, 242, 231, .45);
}

.page-products .pd-stamp-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 12px;
  padding-top: 16px;
  border-top: 1px dashed var(--light-line);
}

.page-products .pd-outro__meta {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: rgba(247, 242, 231, .6);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-products .pd-cat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .pd-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .pd-card--wide {
    grid-column: span 2;
  }
}

@media (min-width: 900px) {
  .page-products .pd-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 36px;
    align-items: start;
  }

  .page-products .pd-cat-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .pd-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .pd-flow--with-pic {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .pd-tiers {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: start;
  }

  .page-products .pd-compare {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, .6fr);
    align-items: start;
  }
}

@media (min-width: 1040px) {
  .page-products .pd-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .pd-step:not(:last-child)::after {
    content: "→";
    position: absolute;
    top: 50%;
    right: -14px;
    transform: translateY(-50%);
    font-size: 17px;
    color: var(--gold);
  }
}

@media (max-width: 480px) {
  .page-products .pd-hero__facts {
    gap: 8px 16px;
    font-size: 12.5px;
  }

  .page-products .pd-chap {
    padding-left: 14px;
  }

  .page-products .pd-table {
    min-width: 560px;
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .tab,
  .page-products .pd-card__go,
  .page-products .pd-flow-nav__link,
  .page-products .pd-toc__link {
    transition: none;
  }
}