.page-products {
  --pp-notch: 18px;
}

/* ---------- 首屏入口板 ---------- */
.page-products .download-board {
  background:
    radial-gradient(120% 92% at 90% -12%, rgba(217, 165, 102, 0.24), transparent 62%),
    var(--cream-100);
  padding-block: clamp(1rem, 2.4vw, 1.6rem) clamp(2.25rem, 5vw, 3.6rem);
  border-bottom: 1px solid var(--beige-200);
}

.page-products .board {
  display: grid;
  gap: 1.5rem;
  margin-top: clamp(1rem, 2.5vw, 1.75rem);
}

.page-products .board__rail {
  background: var(--ink-900);
  color: var(--cream-100);
  padding: 0.95rem 1rem 1.05rem;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--pp-notch)), calc(100% - var(--pp-notch)) 100%, 0 100%);
}

.page-products .rail__label {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--copper-300);
}

.page-products .rail__list {
  display: flex;
  gap: 0.35rem;
  margin: 0;
  padding: 0 0 0.2rem;
  list-style: none;
  overflow-x: auto;
}

.page-products .rail__item {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  flex: 0 0 auto;
  padding: 0.45rem 0.65rem;
  font-size: 0.85rem;
  white-space: nowrap;
  color: rgba(244, 237, 224, 0.72);
  border-bottom: 2px solid transparent;
}

.page-products .rail__item.is-active {
  color: var(--paper-50);
  border-bottom-color: var(--copper-300);
  background: rgba(217, 165, 102, 0.12);
}

.page-products .rail__num {
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--copper-500);
}

.page-products .rail__item.is-active .rail__num {
  color: var(--copper-300);
}

.page-products .rail__note {
  display: none;
  margin: 0.85rem 0 0;
  font-size: 0.8rem;
  line-height: 1.65;
  color: rgba(244, 237, 224, 0.58);
}

.page-products .board__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 6vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--brown-900);
  max-width: 16ch;
}

.page-products .board__title em {
  font-style: normal;
  color: var(--ink-500);
  background: linear-gradient(transparent 64%, rgba(217, 165, 102, 0.44) 64%);
}

.page-products .board__lede {
  margin: 0 0 1.35rem;
  max-width: 36rem;
  font-size: clamp(0.98rem, 1.6vw, 1.06rem);
  line-height: 1.8;
  color: var(--brown-900);
}

.page-products .board__grid {
  display: grid;
  gap: 1rem;
}

.page-products .dl-card {
  display: grid;
  gap: 0.5rem;
  padding: clamp(1.1rem, 2.4vw, 1.6rem);
  background: var(--ink-700);
  color: var(--cream-100);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--pp-notch)), calc(100% - var(--pp-notch)) 100%, 0 100%);
}

.page-products .dl-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px dashed rgba(217, 165, 102, 0.44);
}

.page-products .dl-card__tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--copper-300);
}

.page-products .dl-card__ver {
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  line-height: 1;
  font-weight: 600;
  color: var(--paper-50);
}

.page-products .dl-card__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin: 0;
  font-size: 0.93rem;
  color: rgba(244, 237, 224, 0.86);
}

.page-products .dl-card__row span:last-child {
  font-size: 1.05rem;
  color: var(--copper-300);
}

.page-products .dl-card__hint {
  margin: 0.15rem 0 0.4rem;
  font-size: 0.82rem;
  line-height: 1.7;
  color: rgba(244, 237, 224, 0.62);
}

.page-products .dl-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

/* ---------- 图片框 ---------- */
.page-products .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-products .shot--photo {
  aspect-ratio: 3 / 2;
}

.page-products .shot--ratio {
  aspect-ratio: 2 / 1;
}

/* ---------- 通用标题 ---------- */
.page-products .section h2 {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.6vw, 2.35rem);
  line-height: 1.16;
  letter-spacing: -0.012em;
  color: var(--brown-900);
  max-width: 24ch;
}

.page-products .eyebrow--light {
  color: var(--copper-300);
}

/* ---------- 下载前确认 ---------- */
.page-products .confirm {
  background: var(--paper-50);
}

.page-products .confirm__grid {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}

.page-products .confirm__intro p {
  margin: 0;
  max-width: 34rem;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-products .confirm__items {
  display: grid;
  gap: 0.75rem;
}

.page-products .confirm__item {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  gap: 0.1rem 0.9rem;
  padding: 0.85rem 0.95rem 1rem;
  background: var(--cream-100);
  border-left: 3px solid var(--copper-500);
}

.page-products .confirm__num {
  grid-row: span 2;
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--copper-500);
}

.page-products .confirm__item h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--brown-900);
}

.page-products .confirm__item p {
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--ink-700);
}

.page-products .confirm__shot {
  margin-top: clamp(1.5rem, 3.5vw, 2.5rem);
}

.page-products .confirm .media-frame + .media-frame {
  margin-top: 1rem;
}

/* ---------- 版本切换 ---------- */
.page-products .editions-section {
  background: var(--cream-100);
}

.page-products .editions__intro p {
  margin: 0 0 1.35rem;
  max-width: 36rem;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-products .editions__tabs {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  padding: 0.25rem;
  margin-bottom: 1rem;
  background: var(--beige-200);
}

.page-products .editions__tab {
  padding: 0.5rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--ink-700);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

.page-products .editions__tab:hover {
  background: rgba(251, 247, 239, 0.7);
}

.page-products #edition-std:checked ~ .editions__tabs .editions__tab[for="edition-std"],
.page-products #edition-lite:checked ~ .editions__tabs .editions__tab[for="edition-lite"] {
  background: var(--ink-500);
  border-color: var(--ink-500);
  color: var(--paper-50);
}

.page-products .editions__radio:focus-visible ~ .editions__tabs {
  outline: 2px solid var(--copper-500);
  outline-offset: 3px;
}

.page-products .editions__panel {
  display: none;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.75rem 1.5rem;
  align-items: start;
  padding: clamp(1rem, 2.5vw, 1.55rem);
  background: var(--paper-50);
  border: var(--hair-copper);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--pp-notch)), calc(100% - var(--pp-notch)) 100%, 0 100%);
}

.page-products #edition-std:checked ~ .editions__panel--std,
.page-products #edition-lite:checked ~ .editions__panel--lite {
  display: grid;
}

.page-products .editions__size {
  margin: 0;
  font-size: clamp(1.6rem, 4vw, 2.3rem);
  line-height: 1;
  font-weight: 600;
  color: var(--copper-500);
}

.page-products .editions__name {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--brown-900);
}

.page-products .editions__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.5rem;
}

.page-products .editions__list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--ink-700);
}

.page-products .editions__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 0.45rem;
  height: 0.45rem;
  background: var(--copper-500);
  transform: rotate(45deg);
}

/* ---------- 四步动线 ---------- */
.page-products .steps-section {
  background: linear-gradient(180deg, var(--ink-900) 0%, var(--ink-700) 100%);
  color: var(--cream-100);
}

.page-products .steps-section h2 {
  color: var(--paper-50);
}

.page-products .steps__lede {
  margin: 0;
  max-width: 34rem;
  font-size: 0.94rem;
  line-height: 1.8;
  color: rgba(244, 237, 224, 0.74);
}

.page-products .steps {
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.9rem;
}

.page-products .step {
  padding: 1.1rem 1rem 1.2rem;
  background: rgba(244, 237, 224, 0.055);
  border-top: 2px solid var(--copper-500);
}

.page-products .step__num {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 1.5rem;
  letter-spacing: 0.04em;
  color: var(--copper-300);
}

.page-products .step h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.08rem;
  color: var(--paper-50);
}

.page-products .step p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.74;
  color: rgba(244, 237, 224, 0.74);
}

/* ---------- 分类标签 ---------- */
.page-products .tags-section {
  background: var(--paper-50);
}

.page-products .tags__grid {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}

.page-products .tags__text p {
  margin: 0 0 1.25rem;
  max-width: 34rem;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-products .tags__groups {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.page-products .tags__groups li {
  display: grid;
  grid-template-columns: 3.4rem minmax(0, 1fr);
  gap: 0.85rem;
  padding: 0.7rem 0.85rem;
  background: var(--cream-100);
  border-left: 2px solid var(--copper-500);
}

.page-products .tags__key {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--copper-500);
}

.page-products .tags__desc {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--ink-700);
}

/* 场景选择器 */
.page-products .scenarios {
  margin-top: clamp(1.75rem, 3.5vw, 2.5rem);
  padding-top: clamp(1.25rem, 3vw, 1.85rem);
  border-top: 1px dashed var(--beige-200);
}

.page-products .scenarios__label {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--copper-500);
}

.page-products .scenarios__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1rem;
}

.page-products .scenarios__tab {
  padding: 0.45rem 0.9rem;
  font-size: 0.85rem;
  color: var(--ink-700);
  background: var(--cream-100);
  border: var(--hair-copper);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

.page-products .scenarios__tab:hover {
  border-color: var(--copper-300);
}

.page-products #sc-fixed:checked ~ .scenarios__tabs .scenarios__tab[for="sc-fixed"],
.page-products #sc-multi:checked ~ .scenarios__tabs .scenarios__tab[for="sc-multi"],
.page-products #sc-rules:checked ~ .scenarios__tabs .scenarios__tab[for="sc-rules"],
.page-products #sc-device:checked ~ .scenarios__tabs .scenarios__tab[for="sc-device"] {
  background: var(--ink-500);
  border-color: var(--ink-500);
  color: var(--paper-50);
}

.page-products .scenarios__radio:focus-visible ~ .scenarios__tabs {
  outline: 2px solid var(--copper-500);
  outline-offset: 3px;
}

.page-products .scenarios__panel {
  display: none;
  gap: 0.8rem;
  padding: clamp(1rem, 2.4vw, 1.4rem);
  background: var(--cream-100);
  border-left: 3px solid var(--copper-500);
}

.page-products #sc-fixed:checked ~ .scenarios__panel--fixed,
.page-products #sc-multi:checked ~ .scenarios__panel--multi,
.page-products #sc-rules:checked ~ .scenarios__panel--rules,
.page-products #sc-device:checked ~ .scenarios__panel--device {
  display: grid;
}

.page-products .scenarios__panel p {
  margin: 0;
  max-width: 44rem;
  font-size: 0.93rem;
  line-height: 1.78;
  color: var(--ink-700);
}

.page-products .scenarios__combo {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

/* ---------- 常用入口 ---------- */
.page-products .dock-section {
  background: var(--beige-200);
}

.page-products .dock__grid {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}

.page-products .dock__text p {
  margin: 0 0 1.15rem;
  max-width: 34rem;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-products .dock__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.page-products .dock__list li {
  font-size: 0.92rem;
  line-height: 1.74;
  color: var(--ink-700);
  padding-left: 1rem;
  border-left: 2px solid rgba(176, 123, 60, 0.42);
}

.page-products .dock__list strong {
  color: var(--brown-900);
  font-weight: 600;
}

.page-products .dock__card {
  background: var(--paper-50);
  border: var(--hair-copper);
  padding: clamp(1rem, 2.5vw, 1.5rem);
}

.page-products .dock__card-title {
  margin: 0 0 0.85rem;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--copper-500);
}

.page-products .dock__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: dock;
  display: grid;
  gap: 0.6rem;
}

.page-products .dock__steps li {
  counter-increment: dock;
  display: grid;
  grid-template-columns: 1.6rem minmax(0, 1fr);
  gap: 0.6rem;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--ink-700);
}

.page-products .dock__steps li::before {
  content: counter(dock, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--copper-500);
  padding-top: 0.18rem;
}

/* ---------- 版本与校验 ---------- */
.page-products .version-section {
  background: linear-gradient(180deg, var(--ink-700) 0%, var(--ink-900) 100%);
  color: var(--cream-100);
}

.page-products .version-section h2 {
  color: var(--paper-50);
}

.page-products .version__grid {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}

.page-products .version__text p {
  margin: 0 0 0.9rem;
  max-width: 32rem;
  font-size: 0.94rem;
  line-height: 1.82;
  color: rgba(244, 237, 224, 0.76);
}

.page-products .version__panel {
  display: grid;
  gap: 0.8rem;
  padding: clamp(1rem, 2.5vw, 1.5rem);
  background: rgba(11, 36, 31, 0.55);
  border: var(--hair-light);
}

.page-products .version__line {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin: 0;
  padding-bottom: 0.55rem;
  border-bottom: 1px dashed rgba(217, 165, 102, 0.3);
}

.page-products .version__key {
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: rgba(244, 237, 224, 0.66);
}

.page-products .version__val {
  font-size: 1.02rem;
  color: var(--copper-300);
}

.page-products .version__hash {
  display: grid;
  gap: 0.4rem;
}

.page-products .version__hash-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.page-products .version__hash code {
  display: block;
  padding: 0.5rem 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  line-height: 1.65;
  word-break: break-all;
  color: var(--copper-300);
  background: rgba(176, 123, 60, 0.1);
  border-left: 2px solid var(--copper-500);
}

.page-products .version__status {
  margin: 0;
  min-height: 1.2em;
  font-size: 0.78rem;
  color: var(--copper-300);
}

.page-products .version__shot {
  margin-top: clamp(1.5rem, 3.5vw, 2.5rem);
}

/* ---------- 下载问答 ---------- */
.page-products .faq-section {
  background: var(--cream-100);
}

.page-products .faq__grid {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}

.page-products .faq__intro p {
  margin: 0 0 1.15rem;
  max-width: 30rem;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-products .qa {
  background: var(--paper-50);
  border: var(--hair-copper);
  margin-bottom: 0.55rem;
}

.page-products .qa summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1rem;
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--brown-900);
  cursor: pointer;
  list-style: none;
}

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

.page-products .qa summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1;
  color: var(--copper-500);
}

.page-products .qa[open] summary::after {
  content: "−";
}

.page-products .qa__body {
  padding: 0 1rem 1rem;
  font-size: 0.9rem;
  line-height: 1.76;
  color: var(--ink-700);
}

.page-products .qa__body p {
  margin: 0;
}

.page-products .qa__body a {
  color: var(--ink-500);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 收尾导航 ---------- */
.page-products .outro {
  background: var(--ink-900);
  color: var(--cream-100);
}

.page-products .outro h2 {
  color: var(--paper-50);
}

.page-products .outro__links {
  margin: 1.35rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.5rem;
}

.page-products .outro__links a {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.35rem 1rem;
  padding: 0.85rem 1rem;
  font-size: 0.94rem;
  color: var(--cream-100);
  text-decoration: none;
  border: var(--hair-light);
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

.page-products .outro__links a:hover {
  background: rgba(217, 165, 102, 0.12);
  border-color: var(--copper-300);
}

.page-products .outro__hint {
  font-size: 0.8rem;
  color: rgba(244, 237, 224, 0.6);
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-products .board__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .page-products .editions__panel {
    grid-template-columns: 7.5rem minmax(0, 1fr);
  }

  .page-products .sync-note {
    display: none;
  }
}

@media (min-width: 720px) {
  .page-products .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-products .confirm__items {
    gap: 0.85rem;
  }
}

@media (min-width: 900px) {
  .page-products .board {
    grid-template-columns: 13rem minmax(0, 1fr);
    gap: clamp(1.5rem, 3vw, 2.75rem);
    align-items: start;
  }

  .page-products .board__rail {
    position: sticky;
    top: 5.5rem;
    padding: 1.25rem 1.1rem 1.4rem;
  }

  .page-products .rail__list {
    display: grid;
    gap: 0.1rem;
    overflow: visible;
  }

  .page-products .rail__item {
    white-space: normal;
    padding: 0.5rem 0.6rem;
    border-bottom: 0;
    border-left: 2px solid transparent;
  }

  .page-products .rail__item.is-active {
    border-bottom: 0;
    border-left-color: var(--copper-300);
  }

  .page-products .rail__note {
    display: block;
  }

  .page-products .confirm__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-products .tags__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-products .dock__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-products .version__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-products .faq__grid {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    align-items: start;
  }

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

@media (min-width: 1080px) {
  .page-products .steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .editions__tab,
  .page-products .scenarios__tab,
  .page-products .outro__links a {
    transition: none;
  }
}