.page-products {
  --prod-gap: clamp(16px, 2.4vw, 28px);
  --prod-radius: 2px;
  color: var(--ht-ink);
}

/* ---------- 首屏 ---------- */
.page-products .prod-hero {
  padding: clamp(28px, 5vw, 64px) 0 clamp(36px, 6vw, 72px);
}

.page-products .prod-hero .ht-breadcrumb {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-products .prod-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-products .prod-hero__title {
  margin: 12px 0 0;
}

.page-products .prod-hero__lead {
  margin-top: 20px;
  max-width: 60ch;
}

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

.page-products .prod-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ht-blue-line);
  border: 1px solid var(--ht-ink);
  box-shadow: 2px 2px 0 var(--ht-ink);
}

.page-products .prod-fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px;
  background: var(--ht-mist);
}

.page-products .prod-fact__num {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--ht-blue);
  line-height: 1;
  letter-spacing: -0.02em;
}

.page-products .prod-fact__num em {
  font-style: normal;
  padding: 0 1px;
  color: var(--ht-graphite);
}

.page-products .prod-fact__label {
  font-size: 13px;
  color: var(--ht-graphite);
  letter-spacing: 0.04em;
}

.page-products .prod-hero__fact-note {
  grid-column: 1 / -1;
  margin: 0;
  padding: 16px;
  background: var(--ht-cream);
  font-size: 13px;
  line-height: 1.75;
  color: var(--ht-graphite);
}

.page-products .prod-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
}

.page-products .prod-hero__tags .ht-ticket em {
  font-style: normal;
  padding: 0 1px;
}

/* ---------- 章节通用 ---------- */
.page-products .prod-section-note {
  margin-top: 16px;
  max-width: 68ch;
}

/* ---------- C1 类别总览：错落卡片 ---------- */
.page-products .prod-cats__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--prod-gap);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-products .prod-cat {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 20px 22px;
  background: var(--ht-mist);
  border: 1px solid var(--ht-ink);
  box-shadow: 2px 2px 0 var(--ht-ink);
  transition: transform 180ms var(--ht-ease), box-shadow 180ms var(--ht-ease), background-color 180ms var(--ht-ease);
}

.page-products .prod-cat:hover,
.page-products .prod-cat:focus-within {
  transform: translate(-2px, -4px);
  box-shadow: 6px 6px 0 var(--ht-ink);
  background: #fff;
}

.page-products .prod-cat__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-products .prod-cat__idx {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ht-blue);
  border-bottom: 2px solid var(--ht-orange);
  padding-bottom: 2px;
}

.page-products .prod-cat__name {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-products .prod-cat__meta {
  margin: 0;
  font-size: 13px;
  color: var(--ht-graphite);
  letter-spacing: 0.02em;
}

.page-products .prod-cat__meta .ht-mono {
  color: var(--ht-ink);
  font-weight: 600;
}

.page-products .prod-cat__meta em {
  font-style: normal;
  padding: 0 1px;
}

.page-products .prod-cat__fig {
  margin: 4px 0 2px;
}

.page-products .prod-cat__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ht-graphite);
}

.page-products .prod-cat__link {
  margin-top: auto;
  padding-top: 10px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ht-blue-deep);
  text-decoration: none;
  border-top: 1px dashed var(--ht-blue-line);
}

.page-products .prod-cat__link:hover {
  color: var(--ht-orange);
}

/* ---------- C2 工作台 ---------- */
.page-products .prod-workbench {
  margin-top: clamp(20px, 3vw, 32px);
}

.page-products .prod-filter {
  position: sticky;
  top: 0;
  z-index: 6;
  display: grid;
  gap: 14px;
  padding: 16px 16px 14px;
  margin-bottom: var(--prod-gap);
  background: var(--ht-cream);
  border: 1px solid var(--ht-ink);
  box-shadow: 3px 3px 0 var(--ht-ink);
}

.page-products .prod-filter__label {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ht-graphite);
}

.page-products .prod-filter__opts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-products .prod-tag {
  position: relative;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.page-products .prod-tag input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.page-products .prod-tag > span {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  font-size: 13px;
  line-height: 1.2;
  color: var(--ht-ink);
  background: var(--ht-mist);
  border: 1px solid var(--ht-blue-line);
  border-radius: 999px;
  transition: background-color 180ms var(--ht-ease), border-color 180ms var(--ht-ease), color 180ms var(--ht-ease);
}

.page-products .prod-tag > span em {
  font-style: normal;
  padding: 0 1px;
}

.page-products .prod-tag input:checked + span {
  background: var(--ht-orange-soft);
  border-color: var(--ht-orange);
  color: var(--ht-blue-deep);
  font-weight: 600;
}

.page-products .prod-tag input:focus-visible + span {
  outline: 3px solid var(--ht-orange);
  outline-offset: 2px;
}

.page-products .prod-tag:hover > span {
  border-color: var(--ht-orange);
}

.page-products .prod-filter__result {
  margin: 0;
  font-size: 13px;
  color: var(--ht-graphite);
}

.page-products .prod-filter__count {
  font-size: 16px;
  font-weight: 700;
  color: var(--ht-blue);
}

/* ---------- 项目卡片 ---------- */
.page-products .prod-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--prod-gap);
}

.page-products .prod-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 20px 18px;
}

.page-products .prod-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.page-products .prod-card__dur {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 700;
  line-height: 1;
  color: var(--ht-blue);
  letter-spacing: -0.02em;
}

.page-products .prod-card__dur em {
  font-style: normal;
  color: var(--ht-graphite);
  padding: 0 1px;
}

.page-products .prod-card__dur small {
  font-size: 11px;
  font-weight: 500;
  color: var(--ht-graphite);
  margin-left: 3px;
  letter-spacing: 0.04em;
}

.page-products .prod-card__name {
  margin: 4px 0 0;
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

.page-products .prod-card__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ht-graphite);
}

.page-products .prod-card__more {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--ht-blue-line);
}

.page-products .prod-card__more summary {
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  color: var(--ht-blue-deep);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 6px;
}

.page-products .prod-card__more summary::-webkit-details-marker {
  display: none;
}

.page-products .prod-card__more summary::before {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  font-size: 12px;
  line-height: 1;
  color: var(--ht-ink);
  background: var(--ht-orange-soft);
  border: 1px solid var(--ht-ink);
  border-radius: 50%;
}

.page-products .prod-card__more[open] summary::before {
  content: "−";
}

.page-products .prod-card__more summary:focus-visible {
  outline: 3px solid var(--ht-orange);
  outline-offset: 2px;
}

.page-products .prod-card__more summary:hover {
  color: var(--ht-orange);
}

.page-products .prod-card__list {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 6px;
}

.page-products .prod-card__list li {
  position: relative;
  padding-left: 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ht-graphite);
}

.page-products .prod-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  background: var(--ht-teal);
  border-radius: 50%;
}

.page-products .prod-cards__more {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 16px 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ht-graphite);
  background: var(--ht-mist);
  border-left: 4px solid var(--ht-blue);
}

.page-products .prod-cards__more a {
  color: var(--ht-blue-deep);
  font-weight: 600;
}

/* ---------- C3 时段 ---------- */
.page-products .prod-slots__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-products .prod-slotlist {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .prod-slot {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ht-ink);
  background: var(--ht-mist);
  border: 1px solid var(--ht-blue-line);
  border-left: 3px solid var(--ht-blue);
  transition: background-color 180ms var(--ht-ease), border-color 180ms var(--ht-ease);
}

.page-products .prod-slot:hover {
  background: var(--ht-blue-line);
  border-left-color: var(--ht-orange);
}

.page-products .prod-slot--last {
  border-left-color: var(--ht-orange);
  background: #fff;
}

.page-products .prod-slots__notes {
  display: grid;
  gap: var(--prod-gap);
  align-content: start;
}

.page-products .prod-note {
  padding: 20px;
}

.page-products .prod-note .ht-h3 {
  margin: 0 0 12px;
}

.page-products .prod-note__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-products .prod-note__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
}

.page-products .prod-note__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 2px;
  background: var(--ht-orange);
}

.page-products .prod-note__list strong {
  font-weight: 700;
}

.page-products .prod-note--ink .prod-note__list li::before {
  background: var(--ht-orange-soft);
}

.page-products .prod-note__foot {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed rgba(255, 255, 255, 0.28);
  font-size: 13.5px;
  line-height: 1.7;
}

.page-products .prod-note__foot a {
  color: var(--ht-orange-soft);
  font-weight: 600;
}

/* ---------- C4 区域 ---------- */
.page-products .prod-regions__fig {
  margin: clamp(20px, 3vw, 32px) 0 var(--prod-gap);
}

.page-products .prod-regions__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--prod-gap);
}

.page-products .prod-region {
  position: relative;
  padding: 22px 20px 20px;
  overflow: hidden;
}

.page-products .prod-region__ring {
  position: absolute;
  right: -28px;
  top: -28px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 1px solid var(--ht-blue-line);
  display: block;
}

.page-products .prod-region__ring::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--ht-blue-soft);
  opacity: 0.85;
}

.page-products .prod-region__ring--l1::after {
  width: 14px;
  height: 14px;
  background: var(--ht-blue-line);
}

.page-products .prod-region__ring--l2::after {
  width: 24px;
  height: 24px;
  background: var(--ht-teal);
}

.page-products .prod-region__ring--l3::after {
  width: 38px;
  height: 38px;
  background: var(--ht-blue);
}

.page-products .prod-region__name {
  position: relative;
  margin: 0 0 12px;
  font-size: 1.1rem;
  font-weight: 900;
}

.page-products .prod-region__stat {
  position: relative;
  margin: 0 0 4px;
  font-size: 13.5px;
  color: var(--ht-graphite);
}

.page-products .prod-region__stat .ht-mono {
  font-size: 19px;
  font-weight: 700;
  color: var(--ht-blue);
  margin-right: 4px;
}

.page-products .prod-region__desc {
  position: relative;
  margin: 12px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ht-graphite);
}

.page-products .prod-regions__hub {
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ht-graphite);
}

.page-products .prod-regions__hub a {
  color: var(--ht-blue-deep);
  font-weight: 600;
}

/* ---------- C5 双端 ---------- */
.page-products .prod-dual__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--prod-gap);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-products .prod-dual__fig {
  margin: 0;
}

.page-products .prod-dual__cards {
  display: grid;
  gap: var(--prod-gap);
}

.page-products .prod-dualcard {
  padding: 22px 20px;
}

.page-products .prod-dualcard .ht-h3 {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ht-orange);
  display: inline-block;
}

.page-products .prod-dualcard__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-products .prod-dualcard__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ht-ink);
}

.page-products .prod-dualcard__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 6px;
  background: var(--ht-blue);
  border-radius: 50%;
}

.page-products .prod-dualcard__foot {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--ht-blue-line);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ht-graphite);
}

.page-products .prod-dualcard__foot a {
  color: var(--ht-blue-deep);
  font-weight: 600;
}

/* ---------- C6 流程 ---------- */
.page-products .prod-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: prod-step;
}

.page-products .prod-step {
  position: relative;
  padding: 20px 0 20px 56px;
  border-top: 1px solid var(--ht-blue-line);
}

.page-products .prod-step--last {
  border-bottom: 1px solid var(--ht-blue-line);
}

.page-products .prod-step__num {
  position: absolute;
  left: 0;
  top: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ht-ink);
  background: var(--ht-orange-soft);
  border: 1px solid var(--ht-ink);
  box-shadow: 2px 2px 0 var(--ht-ink);
}

.page-products .prod-step__name {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 900;
}

.page-products .prod-step__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ht-graphite);
}

.page-products .prod-flow__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: clamp(24px, 4vw, 36px);
  padding: 20px;
  background: var(--ht-mist);
  border: 1px solid var(--ht-ink);
  box-shadow: 3px 3px 0 var(--ht-ink);
}

.page-products .prod-flow__text {
  margin: 0;
  flex: 1 1 260px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ht-ink);
}

.page-products .prod-flow__text a {
  color: var(--ht-blue-deep);
  font-weight: 600;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 720px) {
  .page-products .prod-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-products .prod-cats__grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-products .prod-cat--a { grid-column: span 3; }
  .page-products .prod-cat--b { grid-column: span 3; }
  .page-products .prod-cat--c { grid-column: span 2; }
  .page-products .prod-cat--d { grid-column: span 2; }
  .page-products .prod-cat--e { grid-column: span 2; }
  .page-products .prod-cat--f { grid-column: span 6; }

  .page-products .prod-cat--f {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
    grid-template-areas:
      "head desc"
      "meta desc"
      "link desc";
    align-content: start;
    column-gap: 24px;
  }

  .page-products .prod-cat--f .prod-cat__head { grid-area: head; }
  .page-products .prod-cat--f .prod-cat__meta { grid-area: meta; }
  .page-products .prod-cat--f .prod-cat__desc { grid-area: desc; align-self: center; }
  .page-products .prod-cat--f .prod-cat__link { grid-area: link; }

  .page-products .prod-filter {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
    gap: 16px 28px;
  }

  .page-products .prod-filter__result {
    grid-column: 1 / -1;
    padding-top: 10px;
    border-top: 1px dashed var(--ht-blue-line);
  }

  .page-products .prod-cards {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-products .prod-card.ht-span-7 { grid-column: span 7; }
  .page-products .prod-card.ht-span-6 { grid-column: span 6; }
  .page-products .prod-card.ht-span-5 { grid-column: span 5; }

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

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

  .page-products .prod-dual__grid {
    grid-template-columns: minmax(0, 1turn) minmax(0, 1fr);
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    align-items: start;
    gap: clamp(24px, 3vw, 40px);
  }

  .page-products .prod-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0 24px;
  }

  .page-products .prod-step {
    padding: 24px 0 24px 0;
    border-top: 2px solid var(--ht-ink);
    border-bottom: none;
  }

  .page-products .prod-step--last {
    border-bottom: none;
  }

  .page-products .prod-step__num {
    position: static;
    margin-bottom: 16px;
  }
}

@media (min-width: 1024px) {
  .page-products .prod-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-products .prod-slots__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-products .prod-cat,
  .page-products .prod-tag > span,
  .page-products .prod-slot {
    transition: none;
  }

  .page-products .prod-cat:hover,
  .page-products .prod-cat:focus-within {
    transform: none;
  }
}
<<<END>>>