/* ===== 功能与栏目 /features/ ===== */

.page-products {
  --prod-gap: clamp(16px, 2.2vw, 30px);
}

/* ---------- 首屏 ---------- */

.page-products .prod-hero {
  position: relative;
  background:
    radial-gradient(120% 100% at 12% 0%, rgba(23, 195, 162, 0.10), transparent 58%),
    radial-gradient(90% 80% at 100% 100%, rgba(200, 151, 63, 0.14), transparent 62%),
    linear-gradient(165deg, var(--ink) 0%, var(--ink-deep) 100%);
  color: var(--cream);
  padding-top: calc(var(--header-h) + clamp(36px, 6vw, 76px));
  padding-bottom: clamp(48px, 7vw, 92px);
  overflow: hidden;
}

.page-products .prod-hero__frame {
  position: relative;
  border: 1px solid var(--line-light);
  outline: 1px solid rgba(244, 239, 228, 0.08);
  outline-offset: 6px;
  padding: clamp(22px, 3.4vw, 48px);
}

.page-products .prod-hero__frame::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 92px;
  height: 8px;
  background-image: repeating-linear-gradient(90deg, var(--gold) 0 2px, transparent 2px 12px);
  opacity: 0.9;
  pointer-events: none;
}

.page-products .prod-hero .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 36px);
  color: rgba(244, 239, 228, 0.62);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-products .prod-hero .breadcrumb a {
  color: var(--gold-soft);
  text-decoration: none;
}

.page-products .prod-hero .breadcrumb a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-products .prod-hero .breadcrumb__sep {
  margin: 0 8px;
  color: rgba(244, 239, 228, 0.4);
}

.page-products .prod-hero h1 {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(34px, 5.2vw, 70px);
  line-height: 1.16;
  letter-spacing: 0.005em;
  margin: 14px 0 18px;
  max-width: 17em;
  color: var(--cream);
}

.page-products .prod-hero .lead {
  margin: 0;
  max-width: 34em;
  font-size: clamp(16px, 1.3vw, 19px);
  line-height: 1.9;
  color: rgba(244, 239, 228, 0.8);
}

.page-products .prod-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-products .prod-hero__grid {
  display: grid;
  gap: clamp(26px, 3.6vw, 48px);
  align-items: end;
}

@media (min-width: 920px) {
  .page-products .prod-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

.page-products .prod-board {
  border: 1px solid var(--line-light);
  background: linear-gradient(180deg, rgba(7, 26, 21, 0.72), rgba(7, 26, 21, 0.36));
  padding: clamp(18px, 2.2vw, 26px);
}

.page-products .prod-board__title {
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-light);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold-soft);
}

.page-products .prod-board__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
}

.page-products .prod-board__list li {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-products .prod-board__k {
  font-size: 13px;
  line-height: 1.5;
  color: rgba(244, 239, 228, 0.66);
}

.page-products .prod-board__v {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  color: var(--cream);
}

.page-products .prod-board__foot {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-light);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(244, 239, 228, 0.68);
}

/* ---------- 通用小节标题 ---------- */

.page-products .prod-head {
  max-width: 60em;
}

.page-products .prod-head h2 {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: clamp(26px, 3.1vw, 42px);
  line-height: 1.26;
  margin: 10px 0 14px;
  color: var(--text);
}

.page-products .prod-head .lead {
  margin: 0;
  max-width: 40em;
  font-size: clamp(15.5px, 1.15vw, 18px);
  line-height: 1.9;
  color: var(--muted);
}

/* ---------- 01 产品线 ---------- */

.page-products .prod-lines {
  background: var(--paper);
}

.page-products .prod-lines__intro {
  display: grid;
  gap: clamp(24px, 3.4vw, 46px);
  align-items: end;
  margin-bottom: clamp(28px, 4vw, 48px);
}

@media (min-width: 880px) {
  .page-products .prod-lines__intro {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

.page-products .prod-lines__figure {
  margin: 0;
  max-width: 340px;
  justify-self: end;
}

.page-products .figure__frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-products .prod-rail-wrap {
  position: relative;
  padding: 0 clamp(18px, 5vw, 64px) 8px;
  overflow: hidden;
}

.page-products .prod-rail-wrap::before,
.page-products .prod-rail-wrap::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: clamp(18px, 5vw, 64px);
  pointer-events: none;
  z-index: 2;
}

.page-products .prod-rail-wrap::before {
  left: 0;
  background: linear-gradient(90deg, var(--paper), rgba(251, 248, 241, 0));
}

.page-products .prod-rail-wrap::after {
  right: 0;
  background: linear-gradient(270deg, var(--paper), rgba(251, 248, 241, 0));
}

.page-products .prod-rail {
  list-style: none;
  margin: 0;
  padding: 6px 0 22px;
  display: flex;
  gap: clamp(14px, 1.8vw, 26px);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

.page-products .prod-rail:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 4px;
}

.page-products .prod-rail > li {
  display: flex;
  flex: 0 0 clamp(240px, 24vw, 300px);
  scroll-snap-align: start;
}

.page-products .prod-rail > li:nth-child(odd) {
  flex-basis: clamp(258px, 28vw, 348px);
}

.page-products .prod-rail > li:nth-child(3n) {
  flex-basis: clamp(236px, 22vw, 278px);
}

.page-products .prod-card {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.2vw, 28px);
  background: var(--paper);
  border: 1px solid var(--line);
}

.page-products .prod-card__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-products .prod-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: clamp(20px, 1.8vw, 24px);
  line-height: 1.3;
  color: var(--text);
}

.page-products .prod-card__what {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-products .prod-card__meta {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-products .prod-card__meta dt {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-products .prod-card__meta dt:first-of-type {
  margin-top: 0;
}

.page-products .prod-card__meta dd {
  margin: 5px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text);
}

.page-products .prod-card__link {
  margin: 14px 0 0;
}

.page-products .prod-card__link a {
  font-size: 14px;
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-underline-offset: 4px;
}

.page-products .prod-card__link a:hover {
  background: var(--gold-soft);
}

/* ---------- 02 栏目对照 ---------- */

.page-products .prod-compare {
  background: var(--cream);
}

.page-products .prod-compare .prod-head {
  margin-bottom: clamp(26px, 3.6vw, 46px);
}

.page-products .prod-compare__figure {
  margin: 0 0 clamp(28px, 4vw, 46px);
}

.page-products .prod-stage {
  margin-bottom: 10px;
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow-paper);
}

.page-products .prod-stage > summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: clamp(18px, 1.6vw, 21px);
  color: var(--text);
  transition: background-color 0.18s var(--ease);
}

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

.page-products .prod-stage > summary:hover {
  background: rgba(200, 151, 63, 0.09);
}

.page-products .prod-stage > summary:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: -3px;
}

.page-products .prod-stage__name {
  font-weight: 600;
  flex: 0 0 auto;
}

.page-products .prod-stage__hint {
  flex: 1 1 auto;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-products .prod-stage__mark {
  flex: 0 0 auto;
  align-self: center;
  width: 11px;
  height: 11px;
  border-right: 1.5px solid var(--gold);
  border-bottom: 1.5px solid var(--gold);
  transform: rotate(45deg);
  transition: transform 0.24s var(--ease);
}

.page-products .prod-stage[open] .prod-stage__mark {
  transform: rotate(-135deg);
}

.page-products .prod-stage__body {
  padding: 4px 20px 18px;
  border-top: 1px solid var(--line);
}

.page-products .prod-pairs {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .prod-pair {
  padding: 12px 6px;
  border-bottom: 1px dashed var(--line);
  transition: background-color 0.18s var(--ease);
}

.page-products .prod-pair:last-child {
  border-bottom: 0;
}

.page-products .prod-pair:hover {
  background: rgba(200, 151, 63, 0.1);
}

.page-products .prod-pair__row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.page-products .prod-pair__old {
  background: transparent;
  border: 1px dashed var(--line-strong);
  color: var(--muted);
}

.page-products .prod-pair__arrow {
  font-size: 14px;
  color: var(--gold);
}

.page-products .prod-pair:hover .prod-pair__new {
  box-shadow: 0 0 0 2px rgba(200, 151, 63, 0.35);
}

.page-products .prod-pair__note {
  margin: 7px 0 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 03 标签预览 ---------- */

.page-products .prod-tags {
  background: var(--paper);
}

.page-products .prod-tags__intro {
  display: grid;
  gap: clamp(24px, 3.4vw, 46px);
  align-items: center;
  margin-bottom: clamp(30px, 4vw, 52px);
}

@media (min-width: 900px) {
  .page-products .prod-tags__intro {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

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

.page-products .prod-tags__aside {
  margin: 16px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-products .prod-tag-groups {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 1.8vw, 22px);
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
}

.page-products .prod-tag-group {
  position: relative;
  padding: clamp(18px, 2.2vw, 26px);
  border: 1px solid var(--line);
  background: var(--cream);
  box-shadow: var(--shadow-paper);
}

.page-products .prod-tag-group__name {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: 20px;
  color: var(--text);
}

.page-products .prod-tag-group__count {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-products .prod-tag-group__desc {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-products .prod-tag-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-products .prod-tag {
  position: relative;
}

.page-products .prod-tag:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

.page-products .prod-tag__chip {
  cursor: default;
}

.page-products .prod-tag__pop {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  z-index: 6;
  width: min(292px, 72vw);
  padding: 12px 14px;
  background: var(--ink);
  color: var(--cream);
  font-size: 13px;
  line-height: 1.74;
  box-shadow: var(--shadow-lift);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  pointer-events: none;
  transition:
    opacity 0.2s var(--ease),
    transform 0.2s var(--ease),
    visibility 0s linear 0.2s;
}

@media (min-width: 720px) {
  .page-products .prod-tag:nth-child(even) .prod-tag__pop {
    left: auto;
    right: 0;
  }
}

.page-products .prod-tag:hover .prod-tag__pop,
.page-products .prod-tag:focus .prod-tag__pop,
.page-products .prod-tag:focus-within .prod-tag__pop {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition-delay: 0.3s, 0.3s, 0s;
}

/* ---------- 04 检索 ---------- */

.page-products .prod-search {
  background: var(--cream);
}

.page-products .prod-search__grid {
  display: grid;
  gap: clamp(26px, 3.6vw, 52px);
  align-items: start;
}

@media (min-width: 900px) {
  .page-products .prod-search__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

.page-products .prod-inputs {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-products .prod-inputs > li {
  padding: 16px 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  box-shadow: var(--shadow-paper);
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-products .prod-inputs > li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.page-products .prod-inputs h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 18px;
  color: var(--text);
}

.page-products .prod-inputs p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-products .prod-search__aside {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-products .prod-search__aside a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-underline-offset: 4px;
}

.page-products .prod-search__aside a:hover {
  background: var(--gold-soft);
}

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

/* ---------- 05 对接流程 ---------- */

.page-products .prod-flow {
  color: var(--cream);
}

.page-products .prod-flow .prod-head h2 {
  color: var(--cream);
}

.page-products .prod-flow .prod-head .lead {
  color: rgba(244, 239, 228, 0.76);
}

.page-products .prod-flow .prod-head {
  margin-bottom: clamp(26px, 3.6vw, 44px);
}

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

@media (min-width: 700px) {
  .page-products .prod-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-products .prod-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-products .prod-step {
  padding: 20px 20px 22px;
  border: 1px solid var(--line-light);
  background: rgba(7, 26, 21, 0.5);
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-products .prod-step:hover {
  border-color: rgba(200, 151, 63, 0.6);
  background: rgba(7, 26, 21, 0.72);
}

.page-products .prod-step__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-products .prod-step h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: 20px;
  color: var(--cream);
}

.page-products .prod-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(244, 239, 228, 0.76);
}

.page-products .prod-cta {
  display: grid;
  gap: clamp(18px, 2.6vw, 32px);
  align-items: center;
  margin-top: clamp(30px, 4vw, 48px);
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid rgba(200, 151, 63, 0.42);
  background: linear-gradient(120deg, rgba(200, 151, 63, 0.16), rgba(23, 195, 162, 0.06));
}

@media (min-width: 860px) {
  .page-products .prod-cta {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

.page-products .prod-cta h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.35;
  color: var(--cream);
}

.page-products .prod-cta p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 239, 228, 0.78);
}

.page-products .prod-cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-products .prod-cta__meta {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gold-soft);
}

.page-products .prod-flow__figure {
  margin: clamp(30px, 4vw, 50px) 0 0;
}

/* ---------- 响应式 ---------- */

@media (max-width: 900px) {
  .page-products .prod-rail {
    scroll-snap-type: none;
  }
}

@media (max-width: 860px) {
  .page-products .prod-rail-wrap {
    padding-inline: 18px;
  }

  .page-products .prod-rail-wrap::before,
  .page-products .prod-rail-wrap::after {
    display: none;
  }

  .page-products .prod-rail {
    flex-direction: column;
    overflow: visible;
    gap: 14px;
    padding-bottom: 6px;
  }

  .page-products .prod-rail > li,
  .page-products .prod-rail > li:nth-child(odd),
  .page-products .prod-rail > li:nth-child(3n) {
    flex-basis: auto;
    width: 100%;
  }

  .page-products .prod-lines__figure {
    max-width: 100%;
    justify-self: stretch;
  }
}

@media (max-width: 560px) {
  .page-products .prod-hero__frame {
    padding: 20px 16px;
  }

  .page-products .prod-hero__frame::after {
    width: 54px;
    height: 6px;
  }

  .page-products .prod-board__list {
    gap: 12px;
  }

  .page-products .prod-board__v {
    font-size: 22px;
  }

  .page-products .prod-stage > summary {
    flex-wrap: wrap;
    gap: 8px;
    padding: 14px 16px;
  }

  .page-products .prod-stage__hint {
    flex-basis: 100%;
  }

  .page-products .prod-stage__body {
    padding: 4px 16px 16px;
  }

  .page-products .prod-tag__pop {
    width: min(238px, 78vw);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .prod-stage__mark,
  .page-products .prod-tag__pop,
  .page-products .prod-inputs > li,
  .page-products .prod-step,
  .page-products .prod-pair {
    transition: none;
  }
}