.page-products {
  --pd-c-1: #7C4DFF;
  --pd-c-2: #00E0B8;
  --pd-c-3: #A78BFA;
  --pd-c-4: #4C8DFF;
  --pd-line-soft: rgba(233, 238, 246, 0.07);
  --pd-gap-lg: clamp(2rem, 5vw, 3.75rem);
}

/* ============ 首屏 ============ */
.page-products .pd-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(1.5rem, 4vw, 3rem);
}

.page-products .pd-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -18%;
  width: min(70vw, 720px);
  aspect-ratio: 1;
  background: linear-gradient(145deg, var(--violet-soft), transparent 68%);
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  pointer-events: none;
  z-index: 0;
}

.page-products .pd-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: min(38%, 340px);
  height: 1px;
  background: linear-gradient(90deg, var(--teal), transparent);
  pointer-events: none;
}

.page-products .pd-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--gap);
  align-items: center;
}

.page-products .pd-hero__kicker {
  margin: 0 0 0.9rem;
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
}

.page-products .pd-hero__title {
  margin: 0 0 1.1rem;
  font-family: var(--font-narrow);
  font-weight: 300;
  font-size: var(--fs-h1);
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--text-title);
  max-width: 18ch;
}

.page-products .pd-hero__lead {
  margin: 0 0 1.6rem;
  max-width: 34em;
}

.page-products .pd-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-products .pd-hero__media {
  margin: 0;
}

.page-products .pd-hero__frame {
  border-radius: var(--radius-lg);
  border: 1px solid var(--ink-line);
}

/* ============ 形态对照 ============ */
.page-products .pd-forms {
  display: grid;
  gap: var(--gap);
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

.page-products .pd-form {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding: clamp(1.25rem, 3vw, 1.75rem);
}

.page-products .pd-form__tag {
  align-self: flex-start;
  margin: 0;
}

.page-products .pd-form__title {
  margin: 0;
  font-family: var(--font-narrow);
  font-weight: 500;
  font-size: var(--fs-h3);
  line-height: 1.25;
  color: var(--text-title);
}

.page-products .pd-form__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--text-body);
}

.page-products .pd-form__list {
  margin: 0.35rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.5rem;
  border-top: 1px solid var(--pd-line-soft);
  padding-top: 0.9rem;
}

.page-products .pd-form__list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: var(--fs-14);
  line-height: 1.65;
  color: var(--text-muted);
}

.page-products .pd-form__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--teal);
  opacity: 0.7;
}

/* ============ 多链清单 ============ */
.page-products .pd-chains__layout {
  align-items: start;
}

.page-products .pd-chains__grid {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.625rem;
}

.page-products .pd-chain {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 0.85rem 0.9rem;
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-sm);
  background: var(--ink-panel);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-products .pd-chain::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: var(--pd-w, 20px);
  height: 2px;
  background: var(--pd-c, var(--teal));
}

.page-products .pd-chain:hover,
.page-products .pd-chain:focus-within {
  border-color: var(--teal-line);
  transform: translateY(-2px);
}

.page-products .pd-chain__row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-products .pd-chain__dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--pd-c, var(--teal));
}

.page-products .pd-chain__name {
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--text-title);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.page-products .pd-chain__desc {
  display: block;
  margin-top: 0.5rem;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--text-muted);
  opacity: 0;
  transform: translateX(14px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-products .pd-chain:hover .pd-chain__desc,
.page-products .pd-chain:focus-within .pd-chain__desc {
  opacity: 1;
  transform: translateX(0);
}

.page-products .pd-chains__foot {
  margin: 1.35rem 0 0;
  font-size: var(--fs-12);
  line-height: 1.75;
  color: var(--text-muted);
}

.page-products .pd-chains__foot a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid var(--teal-line);
}

.page-products .pd-chains__media {
  margin: 2rem 0 0;
}

/* ============ 四步流程 ============ */
.page-products .pd-steps {
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.page-products .pd-steps__item {
  position: relative;
  display: flex;
}

.page-products .pd-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1.1rem 1.15rem;
  text-align: left;
  background: var(--ink-panel);
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-md);
  color: inherit;
  cursor: pointer;
  font: inherit;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-products .pd-step:hover {
  border-color: var(--teal-line);
}

.page-products .pd-step:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
}

.page-products .pd-step .step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: var(--pill);
  border: 1px solid var(--teal-line);
  color: var(--teal);
  font-size: var(--fs-12);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-products .pd-step .step__title {
  font-family: var(--font-narrow);
  font-weight: 500;
  font-size: var(--fs-20);
  color: var(--text-title);
}

.page-products .pd-step .step__text {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--text-muted);
}

.page-products .pd-step[data-done] {
  border-color: var(--teal);
  background: linear-gradient(180deg, var(--teal-soft), transparent 70%), var(--ink-panel);
}

.page-products .pd-step[data-done] .step__num {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--ink-void);
}

.page-products .pd-step[data-done] .step__title {
  color: var(--mint);
}

.page-products .pd-steps__media {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
}

/* ============ 地址簿常用区 ============ */
.page-products .pd-address__layout {
  align-items: start;
}

.page-products .pd-address__media {
  margin: 0 0 2rem;
}

.page-products .pd-address__panel {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
  padding: clamp(1.15rem, 3vw, 1.6rem);
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-lg);
  background: var(--ink-panel);
}

.page-products .pd-address__doc {
  display: grid;
  gap: 0.35rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--amber-line);
  border-radius: var(--radius-md);
  background: var(--amber-soft);
  text-decoration: none;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .pd-address__doc:hover {
  transform: translateX(3px);
  border-color: var(--amber);
}

.page-products .pd-address__doc-label {
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-products .pd-address__doc-title {
  font-family: var(--font-narrow);
  font-weight: 500;
  font-size: var(--fs-20);
  color: var(--text-title);
}

.page-products .pd-address__doc-note {
  font-size: var(--fs-12);
  line-height: 1.65;
  color: var(--text-body);
}

.page-products .pd-address__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-products .pd-address__tag {
  border: 1px solid var(--ink-line);
  background: var(--plate-soft);
  color: var(--text-body);
  cursor: pointer;
  font-size: var(--fs-12);
  padding: 0.45rem 0.7rem;
  border-radius: var(--pill);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.page-products .pd-address__tag:hover {
  border-color: var(--teal-line);
  color: var(--mint);
}

.page-products .pd-address__tag[data-copied] {
  border-color: var(--teal);
  color: var(--teal);
}

.page-products .pd-address__hint {
  margin: 0;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--text-muted);
}

/* ============ 升级提示 ============ */
.page-products .pd-upgrade__layout {
  align-items: center;
}

.page-products .pd-upgrade__callout {
  margin-top: 1.5rem;
}

.page-products .pd-upgrade__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.4rem;
}

.page-products .pd-upgrade__media {
  margin: 2rem 0 0;
}

/* ============ 兼容问答 ============ */
.page-products .pd-faq {
  display: grid;
  gap: 0.65rem;
  margin-top: clamp(1.5rem, 4vw, 2rem);
}

.page-products .pd-faq__item {
  border: 1px solid var(--ink-line);
  border-radius: var(--radius-md);
  background: var(--ink-panel);
  padding: 0 1.1rem;
  transition: border-color var(--dur) var(--ease);
}

.page-products .pd-faq__item[open] {
  border-color: var(--teal-line);
}

.page-products .pd-faq__item > summary {
  padding: 1.05rem 0;
  font-size: var(--fs-16);
  color: var(--text-title);
  cursor: pointer;
}

.page-products .pd-faq__item .disclosure__body {
  padding-bottom: 1.1rem;
}

.page-products .pd-faq__item .disclosure__body p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--text-body);
}

.page-products .pd-faq__item .disclosure__body a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid var(--teal-line);
}

/* ============ 窄屏兜底 ============ */
@media (max-width: 520px) {
  .page-products .pd-chains__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-products .pd-chain__desc {
    opacity: 1;
    transform: none;
  }

  .page-products .pd-hero__title {
    max-width: none;
  }
}

@media (hover: none) {
  .page-products .pd-chain__desc {
    opacity: 1;
    transform: none;
  }
}

/* ============ 平板及以上 ============ */
@media (min-width: 700px) {
  .page-products .pd-chains__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-products .pd-hero__frame img,
  .page-products .pd-chains__media img,
  .page-products .pd-steps__media img,
  .page-products .pd-address__media img,
  .page-products .pd-upgrade__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
  }
}

/* ============ 桌面端 ============ */
@media (min-width: 900px) {
  .page-products .pd-hero__inner {
    grid-template-columns: 1.05fr 1fr;
    gap: clamp(2rem, 5vw, 4.25rem);
  }

  .page-products .pd-forms {
    grid-template-columns: 2fr 1.4fr 1fr;
    align-items: start;
  }

  .page-products .pd-form--mid {
    margin-top: 1.25rem;
  }

  .page-products .pd-form--narrow {
    margin-top: 2.5rem;
  }

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

  .page-products .pd-chains__media {
    margin-top: 3.5rem;
  }

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

  .page-products .pd-steps__item {
    padding-right: 0.9rem;
  }

  .page-products .pd-steps__item:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 2.15rem;
    right: 0;
    width: 0.9rem;
    height: 1px;
    background: var(--teal-line);
  }

  .page-products .pd-address__media {
    margin: 0;
  }

  .page-products .pd-upgrade__media {
    margin-top: 0;
  }
}

/* ============ 减少动效 ============ */
@media (prefers-reduced-motion: reduce) {
  .page-products .pd-chain__desc,
  .page-products .pd-chain,
  .page-products .pd-step,
  .page-products .pd-address__doc {
    transition: none;
  }

  .page-products .pd-chain__desc {
    opacity: 1;
    transform: none;
  }
}

.page-products {
  --pd-c: transparent;
  --pd-w: 1rem;
}