.page-products {
  --app-cut: 18px;
  --app-hairline: rgba(58, 71, 80, 0.55);
  --app-paperline: rgba(42, 33, 24, 0.16);
  --app-papergrid: rgba(229, 220, 199, 0.9);
  background: var(--ink-0);
  color: var(--paper);
}

.page-products .lx-section {
  padding-block: clamp(36px, 8vw, 80px);
}

/* ---------- 面包屑 ---------- */
.page-products .lx-breadcrumb {
  padding-block: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gray);
}

/* ---------- 首屏 ---------- */
.page-products .app-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 6vw, 64px) 0 clamp(30px, 6vw, 72px);
  background: var(--ink-0);
  border-bottom: 1px solid var(--line);
}

.page-products .app-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--app-hairline) 1px, transparent 1px),
    linear-gradient(to bottom, var(--app-hairline) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: 0.35;
  pointer-events: none;
}

.page-products .app-hero::after {
  content: "";
  position: absolute;
  top: -30%;
  right: -18%;
  width: 58%;
  height: 160%;
  background: var(--grad);
  opacity: 0.16;
  clip-path: polygon(38% 0, 100% 0, 62% 100%, 0 100%);
  pointer-events: none;
}

.page-products .app-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 5vw, 48px);
}

.page-products .app-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-products .app-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 900;
  font-size: clamp(34px, 9vw, 62px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-products .app-hero__lead {
  margin: 0 0 26px;
  max-width: 48ch;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 239, 227, 0.82);
}

.page-products .app-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .app-hero__panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--app-cut)), calc(100% - var(--app-cut)) 100%, 0 100%);
}

.page-products .app-hero__stat {
  padding: 18px 16px;
  background: var(--ink-1);
}

.page-products .app-hero__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 7vw, 38px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-products .app-hero__unit {
  margin-left: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--orange);
}

.page-products .app-hero__caption {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: rgba(244, 239, 227, 0.6);
}

/* ---------- 章节头部 ---------- */
.page-products .lx-section__head {
  margin-bottom: clamp(22px, 4vw, 40px);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--app-hairline);
}

.page-products .lx-section__index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-products .lx-section__title {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 900;
  font-size: clamp(24px, 5.4vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-products .lx-section__note {
  margin: 0;
  max-width: 62ch;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.75;
  color: rgba(244, 239, 227, 0.7);
}

/* ---------- 奶油图纸区通用 ---------- */
.page-products .app-forms,
.page-products .app-trio,
.page-products .app-specs,
.page-products .app-get {
  background-color: var(--paper);
  background-image:
    linear-gradient(to right, var(--app-papergrid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--app-papergrid) 1px, transparent 1px);
  background-size: 40px 40px;
  color: var(--brown);
}

.page-products .app-forms .lx-section__head,
.page-products .app-trio .lx-section__head,
.page-products .app-specs .lx-section__head,
.page-products .app-get .app-get__head {
  border-bottom-color: var(--app-paperline);
}

.page-products .app-forms .lx-section__index,
.page-products .app-trio .lx-section__index,
.page-products .app-specs .lx-section__index,
.page-products .app-get .lx-section__index {
  color: var(--red);
}

.page-products .app-forms .lx-section__title,
.page-products .app-trio .lx-section__title,
.page-products .app-specs .lx-section__title,
.page-products .app-get__title {
  color: var(--brown);
}

.page-products .app-forms .lx-section__note,
.page-products .app-trio .lx-section__note,
.page-products .app-specs .lx-section__note,
.page-products .app-get__lead {
  color: var(--gray);
}

/* ---------- 01 形态对照 ---------- */
.page-products .app-forms__layout {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.page-products .app-forms__layout > *,
.page-products .app-login__grid > *,
.page-products .app-specs__grid > * {
  min-width: 0;
}

.page-products .app-forms__switcher {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
}

.page-products .app-switch {
  flex: 0 0 auto;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 4px 10px;
  min-width: 156px;
  padding: 12px 22px 12px 14px;
  background: var(--brown);
  color: var(--paper);
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, calc(100% - 12px) 100%, 0 100%);
  transition: background 0.25s ease, transform 0.25s ease;
}

.page-products .app-switch:hover,
.page-products .app-switch:focus-visible {
  background: var(--orange);
  transform: translateX(4px);
}

.page-products .app-switch__key {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 20px;
  line-height: 1;
  color: var(--cyan);
}

.page-products .app-switch:hover .app-switch__key,
.page-products .app-switch:focus-visible .app-switch__key {
  color: var(--ink-0);
}

.page-products .app-switch__name {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 19px;
  line-height: 1;
}

.page-products .app-switch__meta {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 11px;
  opacity: 0.82;
}

.page-products .app-forms__panes {
  display: grid;
  gap: clamp(16px, 2.5vw, 24px);
}

.page-products .app-pane {
  padding: clamp(18px, 3vw, 28px);
  background: rgba(255, 255, 255, 0.55);
  border-left: 4px solid var(--brown);
  border-top: 1px solid var(--app-paperline);
  transition: border-color 0.3s ease, background 0.3s ease;
}

.page-products .app-pane:target {
  border-left-color: var(--cyan);
  background: #ffffff;
  box-shadow: inset 0 0 0 1px var(--cyan);
}

.page-products .app-pane__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.page-products .app-pane__title {
  margin: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(19px, 3.6vw, 24px);
  line-height: 1.2;
  color: var(--brown);
}

.page-products .app-pane__text {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.8;
  color: var(--brown);
}

.page-products .app-pane__facts {
  margin: 18px 0 0;
  display: grid;
  gap: 1px;
  background: var(--app-paperline);
  border: 1px solid var(--app-paperline);
}

.page-products .app-pane__facts > div {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 12px;
  padding: 10px 14px;
  background: var(--paper);
}

.page-products .app-pane__facts dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--red);
}

.page-products .app-pane__facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--brown);
}

.page-products .app-pane__media {
  margin: 20px 0 0;
  max-width: 250px;
  aspect-ratio: 720 / 1280;
}

.page-products .app-forms__wide {
  margin: clamp(24px, 4vw, 40px) 0 0;
  aspect-ratio: 1000 / 620;
}

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

/* ---------- 02 切换登录 ---------- */
.page-products .app-login {
  background: var(--ink-0);
  color: var(--paper);
}

.page-products .app-login__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-products .app-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .app-steps__item {
  position: relative;
  padding: 0 0 28px 26px;
  border-left: 2px solid var(--line);
  margin-left: 6px;
}

.page-products .app-steps__item:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-products .app-steps__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--ink-0);
  border: 2px solid var(--cyan);
  transform: rotate(45deg);
}

.page-products .app-steps__num {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-products .app-steps__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 19px;
  line-height: 1.2;
  color: var(--paper);
}

.page-products .app-steps__text {
  margin: 0;
  max-width: 46ch;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 239, 227, 0.76);
}

.page-products .app-login__side {
  display: grid;
  gap: clamp(18px, 3vw, 26px);
}

.page-products .app-login__media {
  aspect-ratio: 1000 / 600;
}

.page-products .app-login__box {
  padding: 20px 22px;
  background: var(--ink-1);
  border-top: 3px solid var(--violet);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--app-cut)), calc(100% - var(--app-cut)) 100%, 0 100%);
}

.page-products .app-login__boxtitle {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 18px;
  color: var(--cyan);
}

.page-products .app-login__boxtext {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 239, 227, 0.78);
}

/* ---------- 03 应用内三栏 ---------- */
.page-products .app-trio__rail {
  display: grid;
  gap: 1px;
  background: var(--app-paperline);
  border: 1px solid var(--app-paperline);
}

.page-products .app-trio__col {
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--paper);
}

.page-products .app-trio__pos {
  display: inline-block;
  margin-bottom: 14px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: #ffffff;
  background: var(--violet);
  clip-path: polygon(0 0, 100% 0, calc(100% - 7px) 100%, 0 100%);
}

.page-products .app-trio__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(20px, 3.8vw, 26px);
  line-height: 1.15;
  color: var(--brown);
}

.page-products .app-trio__text {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.85;
  color: var(--brown);
}

.page-products .app-trio__hint {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--app-paperline);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--red);
}

.page-products .app-trio__foot {
  margin: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.8;
  color: var(--gray);
}

/* ---------- 04 版本时间轴 ---------- */
.page-products .app-vers {
  background: var(--ink-0);
  color: var(--paper);
}

.page-products .app-vers__track {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 4px 0 18px;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
}

.page-products .app-ver {
  flex: 0 0 min(258px, 76vw);
  scroll-snap-align: start;
  background: var(--ink-1);
  border: 1px solid var(--line);
  border-top: 3px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: border-color 0.3s ease;
}

.page-products .app-ver[open] {
  border-top-color: var(--cyan);
}

.page-products .app-ver__head {
  display: grid;
  gap: 6px;
  padding: 16px;
  cursor: pointer;
}

.page-products .app-ver__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-products .app-ver__time {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-products .app-ver__body {
  padding: 0 16px 18px;
}

.page-products .app-ver__body p {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.75;
  color: rgba(244, 239, 227, 0.74);
}

.page-products .app-vers__media {
  margin: clamp(20px, 3.5vw, 32px) 0 0;
  aspect-ratio: 1000 / 560;
}

/* ---------- 05 设备适配 ---------- */
.page-products .app-specs__grid {
  display: grid;
  gap: clamp(22px, 4vw, 36px);
}

.page-products .app-specs__table {
  overflow-x: auto;
  border: 1px solid var(--app-paperline);
}

.page-products .app-specs__table table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-products .app-specs__table caption {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--paper);
  background: var(--brown);
}

.page-products .app-specs__table th {
  padding: 11px 14px;
  text-align: left;
  font-weight: 600;
  color: var(--paper);
  background: var(--ink-1);
  white-space: nowrap;
}

.page-products .app-specs__table td {
  padding: 11px 14px;
  line-height: 1.65;
  color: var(--brown);
  border-top: 1px solid var(--app-paperline);
}

.page-products .app-specs__table tbody tr:nth-child(odd) td {
  background: var(--paper);
}

.page-products .app-specs__table tbody tr:nth-child(even) td {
  background: var(--paper-2);
}

.page-products .app-specs__table tbody tr:hover td {
  background: #ffffff;
}

.page-products .app-specs__aside {
  display: grid;
  gap: clamp(18px, 3vw, 24px);
}

.page-products .app-specs__note {
  padding: 20px 22px;
  background: var(--ink-1);
  border-left: 4px solid var(--orange);
}

.page-products .app-specs__notetitle {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 18px;
  color: var(--cyan);
}

.page-products .app-specs__note p {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 239, 227, 0.8);
}

.page-products .app-specs__media {
  margin: 0;
  aspect-ratio: 900 / 520;
}

/* ---------- 06 常见问题 ---------- */
.page-products .app-help {
  background: var(--ink-0);
  color: var(--paper);
}

.page-products .app-help__list {
  border-top: 1px solid var(--line);
}

.page-products .app-faq {
  border-bottom: 1px solid var(--line);
}

.page-products .app-faq summary {
  position: relative;
  padding: 16px 38px 16px 0;
  cursor: pointer;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 17px;
  line-height: 1.4;
  color: var(--paper);
}

.page-products .app-faq summary::after {
  content: "+";
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--orange);
}

.page-products .app-faq[open] summary::after {
  content: "–";
  color: var(--cyan);
}

.page-products .app-faq p {
  margin: 0 0 20px;
  max-width: 70ch;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.85;
  color: rgba(244, 239, 227, 0.76);
}

.page-products .app-help__foot {
  margin: 22px 0 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 239, 227, 0.72);
}

.page-products .app-help__foot a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 07 获取与更新 ---------- */
.page-products .app-get {
  position: relative;
}

.page-products .app-get::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--grad);
}

.page-products .app-get__head {
  margin-bottom: clamp(22px, 4vw, 36px);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--app-paperline);
}

.page-products .app-get__title {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 900;
  font-size: clamp(24px, 5.4vw, 38px);
  line-height: 1.1;
}

.page-products .app-get__lead {
  margin: 0;
  max-width: 60ch;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.8;
}

.page-products .app-get__grid {
  display: grid;
  gap: clamp(14px, 2.4vw, 22px);
}

.page-products .app-get__card {
  padding: clamp(18px, 3vw, 26px);
  background: #ffffff;
  border-top: 3px solid var(--brown);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--app-cut)), calc(100% - var(--app-cut)) 100%, 0 100%);
}

.page-products .app-get__key {
  display: inline-block;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 22px;
  line-height: 1;
  color: var(--violet);
}

.page-products .app-get__cardtitle {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 20px;
  color: var(--brown);
}

.page-products .app-get__card p {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.8;
  color: var(--brown);
}

.page-products .app-get__foot {
  margin: 22px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.8;
  color: var(--gray);
}

.page-products .app-get__foot a {
  color: var(--red);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-products .app-trio__rail {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-products .app-hero__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
  }

  .page-products .app-forms__layout {
    grid-template-columns: 232px minmax(0, 1fr);
    align-items: start;
  }

  .page-products .app-forms__switcher {
    position: sticky;
    top: 96px;
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-products .app-switch {
    min-width: 0;
    width: 100%;
  }

  .page-products .app-switch:hover,
  .page-products .app-switch:focus-visible {
    transform: translateX(6px);
  }

  .page-products .app-login__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-products .app-specs__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .app-switch,
  .page-products .app-pane,
  .page-products .app-ver {
    transition: none;
  }

  .page-products .app-switch:hover,
  .page-products .app-switch:focus-visible {
    transform: none;
  }
}