.page-products {
  --pd-rail: 200px;
  --pd-shadow-card: 8px 10px 0 rgba(23, 36, 43, .14);
  background: var(--paper);
  color: var(--ink);
}

.page-products .pd-section {
  padding-block: var(--section-y);
}

/* ---------- 首屏 ---------- */
.page-products .pd-hero {
  position: relative;
  overflow: hidden;
  color: var(--paper-2);
  background:
    radial-gradient(120% 88% at 92% 4%, rgba(168, 67, 43, .58), transparent 60%),
    linear-gradient(165deg, var(--deep) 0%, var(--deep-2) 100%);
  padding-block: clamp(1.25rem, .9rem + 1.6vw, 2rem) clamp(2.5rem, 1.8rem + 3.4vw, 4.5rem);
}

.page-products .pd-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 6px;
  background: linear-gradient(90deg,
    var(--ochre) 0 22%, var(--flag) 22% 44%,
    var(--clover) 44% 64%, var(--mist) 64% 84%, var(--verm) 84% 100%);
  opacity: .85;
}

.page-products .pd-hero .breadcrumbs {
  margin-bottom: clamp(1.5rem, 1rem + 2vw, 2.5rem);
  font-size: var(--step--1);
  color: var(--paper-55);
}

.page-products .pd-hero .breadcrumbs a {
  color: var(--paper-70);
  text-decoration: none;
}

.page-products .pd-hero .breadcrumbs a:hover {
  color: var(--flag);
}

.page-products .pd-hero .eyebrow {
  color: var(--flag);
}

.page-products .pd-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 1.2rem + 2.6vw, 3rem);
  align-items: center;
}

.page-products .pd-hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 1.5rem + 3.4vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: -.02em;
  margin: .45rem 0 0;
  color: var(--paper-2);
}

.page-products .pd-lead {
  max-width: 46ch;
  margin-top: 1rem;
  font-size: var(--step-1);
  line-height: 1.78;
  color: var(--paper-70);
}

.page-products .pd-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.6rem;
}

.page-products .pd-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem 1.6rem;
  margin: 1.9rem 0 0;
  padding: 1rem 0 0;
  list-style: none;
  border-top: 1px solid var(--paper-line);
}

.page-products .pd-hero-facts li {
  display: flex;
  align-items: baseline;
  gap: .45rem;
}

.page-products .pd-hero-facts strong {
  font-family: var(--font-mono);
  font-size: var(--step-3);
  font-weight: 700;
  color: var(--clover);
  letter-spacing: -.02em;
}

.page-products .pd-hero-facts span {
  font-size: var(--step--1);
  color: var(--paper-55);
}

.page-products .pd-hero-visual {
  position: relative;
  margin: 0;
}

.page-products .pd-hero-visual .media-frame {
  border: 2px solid var(--paper-line-strong);
  border-radius: 6px 26px 6px 26px;
  overflow: hidden;
}

.page-products .pd-hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .pd-float-card {
  margin-top: .9rem;
  background: var(--paper-2);
  color: var(--ink);
  border: 2px solid var(--ink);
  border-radius: var(--radius-sticker);
  box-shadow: var(--shadow-print);
  padding: .8rem 1rem;
  max-width: 250px;
}

.page-products .pd-float-card p {
  margin: .5rem 0 0;
  font-size: var(--step--1);
  line-height: 1.55;
  font-weight: 500;
}

/* ---------- 小节头 ---------- */
.page-products .pd-head {
  max-width: 62ch;
  margin-bottom: clamp(1.6rem, 1.1rem + 2vw, 2.6rem);
}

.page-products .pd-head h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--step-4);
  line-height: 1.18;
  letter-spacing: -.02em;
  margin: .4rem 0 .65rem;
  color: var(--ink);
}

.page-products .pd-head-sub {
  margin: 0;
  font-size: var(--step-1);
  line-height: 1.78;
  color: var(--ink-70);
}

.page-products .pd-head--light .eyebrow {
  color: var(--flag);
}

.page-products .pd-head--light h2 {
  color: var(--paper-2);
}

.page-products .pd-head--light .pd-head-sub {
  color: var(--paper-70);
}

/* ---------- 资料货架 ---------- */
.page-products .pd-shelf {
  background:
    linear-gradient(180deg, var(--deep-2) 0%, var(--deep) 100%);
  color: var(--paper-2);
  padding-block: clamp(2.25rem, 1.6rem + 3vw, 4rem) clamp(2.5rem, 1.8rem + 3.4vw, 4.5rem);
}

.page-products .pd-shelf-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.4rem, 1rem + 2vw, 2.2rem);
}

.page-products .pd-rail-title {
  margin: 0 0 .6rem;
  font-size: var(--step-00);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--paper-55);
}

.page-products .pd-rail-list {
  display: flex;
  gap: .5rem;
  list-style: none;
  margin: 0;
  padding: 0 0 .4rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-products .pd-rail-link {
  display: flex;
  flex-direction: column;
  gap: .15rem;
  white-space: nowrap;
  padding: .55rem .9rem;
  border: 1.5px solid var(--paper-line-strong);
  border-radius: var(--radius-pill);
  color: var(--paper-2);
  text-decoration: none;
  font-weight: 700;
  font-size: var(--step--1);
  background: rgba(248, 241, 229, .06);
  transition: background .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}

.page-products .pd-rail-link i {
  font-style: normal;
  font-weight: 400;
  font-size: var(--step-00);
  color: var(--paper-55);
}

.page-products .pd-rail-link:hover,
.page-products .pd-rail-link:focus-visible {
  background: rgba(127, 175, 58, .18);
  border-color: var(--clover);
  transform: translateY(-2px);
}

.page-products .pd-shelf-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
}

.page-products .pd-pack {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--paper-2);
  color: var(--ink);
  border: 2px solid var(--ink);
  box-shadow: var(--pd-shadow-card);
  scroll-margin-top: 110px;
}

.page-products .pd-pack--before {
  border-radius: 6px 26px 6px 26px;
}

.page-products .pd-pack--transit {
  border-radius: 26px 6px 26px 6px;
  background: var(--sand);
}

.page-products .pd-pack--network {
  border-radius: var(--radius-m);
  background: var(--mist);
}

.page-products .pd-pack--emergency {
  border-radius: 4px 4px 22px 22px;
  background: #FBEBC8;
}

.page-products .pd-pack-media {
  overflow: hidden;
  border-bottom: 2px solid var(--ink);
}

.page-products .pd-pack-media img {
  display: block;
  width: 100%;
  height: 100%;
  max-height: 190px;
  object-fit: cover;
}

.page-products .pd-pack-body {
  padding: 1.15rem 1.15rem 1.3rem;
}

.page-products .pd-pack-body h3 {
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 700;
  letter-spacing: -.01em;
  margin: 0 0 .55rem;
  color: var(--ink);
}

.page-products .pd-pack-body p {
  margin: 0 0 .85rem;
  font-size: var(--step-0);
  line-height: 1.72;
  color: var(--ink-70);
}

.page-products .pd-pack-list {
  margin: 0 0 .95rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .38rem;
}

.page-products .pd-pack-list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: var(--step--1);
  line-height: 1.6;
  color: var(--ink);
}

.page-products .pd-pack-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .58em;
  width: .5rem;
  height: .5rem;
  border: 2px solid var(--ochre);
  border-radius: 2px;
}

.page-products .pd-pack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  padding-top: .85rem;
  border-top: 1.5px dashed var(--line-strong);
}

/* ---------- 三步 ---------- */
.page-products .pd-steps-section {
  background: var(--paper);
}

.page-products .pd-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
}

.page-products .pd-step {
  position: relative;
  background: var(--paper-2);
  border: 2px solid var(--ink);
  border-radius: var(--radius-m);
  box-shadow: var(--pd-shadow-card);
  overflow: hidden;
}

.page-products .pd-step[open] {
  border-color: var(--ochre);
}

.page-products .pd-step-summary {
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
}

.page-products .pd-step-summary::-webkit-details-marker {
  display: none;
}

.page-products .pd-step-num {
  flex: none;
  display: grid;
  place-items: center;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  background: var(--ochre);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: var(--step-0);
  font-weight: 700;
}

.page-products .pd-step-title {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--step-1);
  line-height: 1.45;
  color: var(--ink);
}

.page-products .pd-step-body {
  padding: 0 1.1rem 1.2rem 1.1rem;
  border-top: 1.5px dashed var(--line);
  margin-top: .2rem;
  padding-top: 1rem;
}

.page-products .pd-step-body p {
  margin: 0 0 .7rem;
  font-size: var(--step-0);
  line-height: 1.75;
  color: var(--ink-70);
}

.page-products .pd-step-link {
  display: inline-block;
  margin-top: .2rem;
  font-weight: 700;
  font-size: var(--step--1);
  color: var(--ochre);
  text-decoration: none;
  border-bottom: 2px solid var(--clover);
  padding-bottom: 1px;
}

.page-products .pd-step-link:hover {
  color: var(--verm);
}

/* ---------- 手机端 ---------- */
.page-products .pd-mobile {
  background: var(--mist);
  border-block: 2px solid var(--ink);
}

.page-products .pd-mobile-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.4rem, 1rem + 2vw, 2.4rem);
  align-items: center;
}

.page-products .pd-mobile-figure {
  margin: 0;
  border: 2px solid var(--ink);
  border-radius: 24px 6px 24px 6px;
  overflow: hidden;
  box-shadow: 10px 10px 0 rgba(11, 53, 80, .2);
  background: var(--paper-2);
}

.page-products .pd-mobile-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .pd-mobile-copy h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--step-4);
  line-height: 1.18;
  letter-spacing: -.02em;
  margin: .4rem 0 .8rem;
  color: var(--ink);
}

.page-products .pd-mobile-copy > p {
  margin: 0 0 1.2rem;
  font-size: var(--step-0);
  line-height: 1.78;
  color: var(--ink-70);
}

.page-products .pd-mobile-points {
  display: grid;
  gap: .7rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pd-mobile-points li {
  display: flex;
  flex-direction: column;
  gap: .15rem;
  padding-left: .9rem;
  border-left: 3px solid var(--clover);
}

.page-products .pd-mobile-points strong {
  font-size: var(--step-0);
  color: var(--ink);
}

.page-products .pd-mobile-points span {
  font-size: var(--step--1);
  line-height: 1.65;
  color: var(--ink-70);
}

/* ---------- 兼容与保存 ---------- */
.page-products .pd-compat {
  background: var(--paper);
}

.page-products .pd-compat-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
  margin-bottom: clamp(1.4rem, 1rem + 1.6vw, 2rem);
}

.page-products .pd-compat-card {
  background: var(--sand);
  border: 2px solid var(--ink);
  border-radius: 6px 20px 6px 20px;
  padding: 1.15rem 1.2rem 1.3rem;
}

.page-products .pd-compat-card h3 {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 700;
  color: var(--ink);
}

.page-products .pd-compat-card p {
  margin: 0;
  font-size: var(--step-0);
  line-height: 1.72;
  color: var(--ink-70);
}

.page-products .pd-check {
  background: var(--deep);
  color: var(--paper-2);
  border-radius: 6px 26px 6px 26px;
  padding: 1.3rem 1.2rem 1.5rem;
}

.page-products .pd-check-title {
  margin: 0 0 .9rem;
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 700;
  color: var(--paper-2);
}

.page-products .pd-checklist {
  display: grid;
  gap: .55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pd-checklist label {
  display: flex;
  align-items: flex-start;
  gap: .7rem;
  cursor: pointer;
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--paper-70);
}

.page-products .pd-checklist input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.page-products .pd-checklist span::before {
  content: "";
  display: inline-block;
  width: 1rem;
  height: 1rem;
  margin-right: .55rem;
  vertical-align: -.16em;
  border: 2px solid var(--paper-line-strong);
  border-radius: 3px;
  background: transparent;
}

.page-products .pd-checklist input:checked + span {
  color: var(--paper-2);
  text-decoration: line-through;
  text-decoration-color: var(--clover);
}

.page-products .pd-checklist input:checked + span::before {
  background: var(--clover);
  border-color: var(--clover);
  box-shadow: inset 0 0 0 2px var(--deep);
}

.page-products .pd-checklist input:focus-visible + span::before {
  outline: 2px solid var(--flag);
  outline-offset: 2px;
}

/* ---------- 问题折叠 ---------- */
.page-products .pd-help {
  background: var(--paper-2);
}

.page-products .pd-faq-list {
  display: grid;
  gap: .75rem;
}

.page-products .pd-faq-item {
  border: 2px solid var(--ink);
  border-radius: var(--radius-m);
  background: var(--white);
  overflow: hidden;
}

.page-products .pd-faq-item[open] {
  background: var(--paper);
  border-color: var(--ochre);
}

.page-products .pd-faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--step-1);
  color: var(--ink);
}

.page-products .pd-faq-q::-webkit-details-marker {
  display: none;
}

.page-products .pd-faq-q i {
  font-style: normal;
  flex: none;
  display: grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--flag);
  color: var(--ink);
  font-weight: 700;
  line-height: 1;
  transition: transform .2s var(--ease);
}

.page-products .pd-faq-item[open] .pd-faq-q i {
  transform: rotate(45deg);
}

.page-products .pd-faq-a {
  padding: 0 1.15rem 1.15rem;
  border-top: 1.5px dashed var(--line);
  padding-top: 1rem;
}

.page-products .pd-faq-a p {
  margin: 0;
  font-size: var(--step-0);
  line-height: 1.78;
  color: var(--ink-70);
}

.page-products .pd-help-foot {
  margin: 1.5rem 0 0;
  padding: .9rem 1.1rem;
  border-left: 4px solid var(--clover);
  background: var(--mist);
  font-size: var(--step-0);
  line-height: 1.72;
  color: var(--ink-70);
}

.page-products .pd-help-foot a {
  color: var(--ochre);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--clover);
}

/* ---------- 尾段 CTA ---------- */
.page-products .pd-cta {
  position: relative;
  overflow: hidden;
  background: var(--deep);
  color: var(--paper-2);
  padding-block: clamp(3rem, 2rem + 5vw, 5.5rem);
}

.page-products .pd-cta-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .38;
}

.page-products .pd-cta::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(11, 53, 80, .92) 0%, rgba(11, 53, 80, .55) 62%, rgba(168, 67, 43, .55) 100%);
}

.page-products .pd-cta-inner {
  position: relative;
  z-index: 1;
  max-width: 60ch;
}

.page-products .pd-cta .eyebrow {
  color: var(--flag);
}

.page-products .pd-cta h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--step-4);
  line-height: 1.16;
  letter-spacing: -.02em;
  margin: .4rem 0 .8rem;
  color: var(--paper-2);
}

.page-products .pd-cta-inner > p {
  margin: 0 0 1.5rem;
  font-size: var(--step-1);
  line-height: 1.78;
  color: var(--paper-70);
}

.page-products .pd-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.page-products .pd-cta-note {
  margin: 1.5rem 0 0;
  font-size: var(--step--1);
  color: var(--paper-55);
}

.page-products .pd-cta-note a {
  color: var(--paper-2);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--clover);
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 720px) {
  .page-products .pd-shelf-cards {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-products .pd-pack--before,
  .page-products .pd-pack--transit {
    grid-column: span 3;
  }

  .page-products .pd-pack--network {
    grid-column: span 4;
  }

  .page-products .pd-pack--emergency {
    grid-column: span 2;
  }

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

  .page-products .pd-checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .6rem 1.5rem;
  }
}

@media (min-width: 860px) {
  .page-products .pd-hero-grid {
    grid-template-columns: 1.08fr .92fr;
    gap: clamp(2rem, 1.4rem + 2.6vw, 3.4rem);
  }

  .page-products .pd-float-card {
    position: absolute;
    left: -14px;
    bottom: 24px;
    margin-top: 0;
  }

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

  .page-products .pd-step + .pd-step::before {
    content: "";
    position: absolute;
    left: calc(-1 * var(--gap) + 2px);
    top: 2.1rem;
    width: calc(var(--gap) - 10px);
    height: 2px;
    background: repeating-linear-gradient(90deg, var(--ochre) 0 6px, transparent 6px 11px);
    opacity: .7;
  }

  .page-products .pd-mobile-grid {
    grid-template-columns: .85fr 1.15fr;
    gap: clamp(2rem, 1.4rem + 2.4vw, 3.2rem);
  }
}

@media (min-width: 900px) {
  .page-products .pd-shelf-grid {
    grid-template-columns: var(--pd-rail) minmax(0, 1fr);
    gap: clamp(1.8rem, 1.2rem + 2.2vw, 3rem);
    align-items: start;
  }

  .page-products .pd-scene-rail {
    position: sticky;
    top: 96px;
  }

  .page-products .pd-rail-list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-products .pd-rail-link {
    border-radius: 6px 16px 6px 16px;
    white-space: normal;
    padding: .7rem .9rem;
    border-left-width: 4px;
    border-left-color: var(--clover);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .pd-rail-link,
  .page-products .pd-faq-q i {
    transition: none;
  }

  .page-products .pd-rail-link:hover {
    transform: none;
  }
}