.page-products {
  background-color: var(--snow);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-products .container {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.page-products .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--copper);
  margin: 0 0 14px;
  padding-left: 26px;
  position: relative;
}

.page-products .eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 16px;
  height: 1px;
  background: var(--gold);
}

.page-products .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--copper);
  margin-bottom: 26px;
}

.page-products .breadcrumb__link {
  color: var(--copper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-products .breadcrumb__link:hover {
  color: var(--ink);
  border-bottom-color: var(--gold);
}

.page-products .breadcrumb__sep {
  color: var(--gold);
}

.page-products .breadcrumb__current {
  color: var(--ink);
}

.page-products .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background-color 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-products .btn--gold {
  background: var(--gold);
  color: var(--ink);
  border-color: var(--gold);
}

.page-products .btn--gold:hover {
  background: var(--mist);
  border-color: var(--mist);
}

.page-products .btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.page-products .btn--ghost:hover {
  border-color: var(--gold);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-products .pp-hero {
  position: relative;
  padding-block: clamp(22px, 4vw, 40px) clamp(48px, 7vw, 88px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-products .pp-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(20, 22, 28, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(20, 22, 28, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}

.page-products .pp-hero > .container {
  position: relative;
}

.page-products .pp-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}

.page-products .pp-hero__lead h1 {
  font-size: clamp(2rem, 5.6vw, 3.6rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 900;
  margin: 0 0 20px;
  max-width: 18ch;
}

.page-products .pp-hero__intro {
  font-size: 16px;
  line-height: 1.8;
  color: var(--copper);
  margin: 0 0 28px;
  max-width: 60ch;
}

.page-products .pp-facts {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-products .pp-facts li {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  align-items: baseline;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .pp-facts__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--copper);
}

.page-products .pp-facts__v {
  font-size: 15px;
  font-weight: 700;
}

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

.page-products .pp-vcard {
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 1fr;
}

.page-products .pp-vcard__frame {
  margin: 0;
  background: var(--deep);
  overflow: hidden;
}

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

.page-products .pp-vcard__body {
  padding: clamp(20px, 3vw, 30px);
  border-top: 2px solid var(--gold);
}

.page-products .pp-vcard__num {
  font-family: var(--font-mono);
  font-size: clamp(2.2rem, 6vw, 3.2rem);
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0 0 12px;
}

.page-products .pp-vcard__note {
  font-size: 14px;
  line-height: 1.75;
  color: var(--copper);
  margin: 0 0 18px;
}

.page-products .pp-vcard__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-products .pp-vcard__list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 13px;
}

.page-products .pp-vcard__k {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-products .pp-vcard__v {
  color: var(--copper);
  text-align: right;
}

/* ---------- 通用章节 ---------- */
.page-products .pp-section {
  padding-block: clamp(48px, 7vw, 96px);
}

.page-products .pp-section--sand {
  background: var(--sand);
}

.page-products .pp-section--deep {
  background: var(--ink);
  color: var(--snow);
}

.page-products .pp-section--deep .eyebrow {
  color: var(--mist);
}

.page-products .pp-head {
  max-width: 62ch;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-products .pp-head h2 {
  font-size: clamp(1.55rem, 3.4vw, 2.5rem);
  line-height: 1.24;
  letter-spacing: -0.015em;
  font-weight: 900;
  margin: 0 0 14px;
}

.page-products .pp-head__sub {
  font-size: 15px;
  line-height: 1.8;
  color: var(--copper);
  margin: 0;
}

.page-products .pp-head--deep .pp-head__sub {
  color: var(--on-dark-dim);
}

/* ---------- 下载入口 ---------- */
.page-products .pp-channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-products .pp-channel {
  position: relative;
  padding: clamp(22px, 3vw, 34px) clamp(20px, 3vw, 32px);
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.page-products .pp-channel--alt {
  background: var(--ink-soft);
  color: var(--snow);
  border-color: var(--line-dark);
}

.page-products .pp-channel__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
  margin-bottom: 14px;
}

.page-products .pp-channel h3 {
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  line-height: 1.4;
  margin: 0 0 14px;
}

.page-products .pp-channel p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--copper);
  margin: 0 0 18px;
}

.page-products .pp-channel--alt p {
  color: var(--on-dark);
}

.page-products .pp-channel__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .pp-channel__list li {
  position: relative;
  padding: 8px 0 8px 20px;
  font-size: 14px;
  line-height: 1.7;
  border-top: 1px solid var(--line-soft);
}

.page-products .pp-channel--alt .pp-channel__list li {
  color: var(--on-dark);
  border-top-color: var(--line-dark-soft);
}

.page-products .pp-channel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.05em;
  width: 8px;
  height: 1px;
  background: var(--gold);
}

/* ---------- 三端标签 ---------- */
.page-products .pp-tabs {
  position: relative;
}

.page-products .pp-tabs__radio,
.page-products .pp-tl__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-products .pp-tabs__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  border-bottom: 1px solid var(--line-dark);
  margin-bottom: 26px;
}

.page-products .pp-tabs__btn {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  padding: 12px 18px;
  color: var(--on-dark-dim);
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-products .pp-tabs__btn:hover {
  color: var(--snow);
  background: rgba(242, 240, 234, 0.04);
}

.page-products #pp-tab-ios:checked ~ .pp-tabs__bar label[for="pp-tab-ios"],
.page-products #pp-tab-android:checked ~ .pp-tabs__bar label[for="pp-tab-android"],
.page-products #pp-tab-web:checked ~ .pp-tabs__bar label[for="pp-tab-web"] {
  color: var(--gold);
  border-bottom-color: var(--red);
  background: rgba(201, 162, 39, 0.08);
}

.page-products .pp-tabs__radio:focus-visible ~ .pp-tabs__bar {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
}

.page-products .pp-tabs__panel {
  display: none;
  padding: clamp(20px, 3vw, 32px);
  background: rgba(242, 240, 234, 0.04);
  border: 1px solid var(--line-dark);
  border-left: 2px solid var(--gold);
}

.page-products #pp-tab-ios:checked ~ .pp-tabs__panel--ios,
.page-products #pp-tab-android:checked ~ .pp-tabs__panel--android,
.page-products #pp-tab-web:checked ~ .pp-tabs__panel--web {
  display: block;
}

.page-products .pp-tabs__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
  margin: 0 0 12px;
}

.page-products .pp-tabs__panel h3 {
  font-size: clamp(1.1rem, 2.4vw, 1.45rem);
  line-height: 1.4;
  margin: 0 0 14px;
  color: var(--snow);
}

.page-products .pp-tabs__panel p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--on-dark);
  margin: 0 0 16px;
  max-width: 66ch;
}

.page-products .pp-tabs__list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-products .pp-tabs__list li {
  font-size: 14px;
  line-height: 1.75;
  color: var(--on-dark);
  padding-left: 18px;
  position: relative;
}

.page-products .pp-tabs__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.95em;
  width: 8px;
  height: 1px;
  background: var(--red);
}

.page-products .pp-tabs__list strong {
  color: var(--white);
  font-weight: 700;
}

.page-products .pp-tabs__foot {
  font-family: var(--font-mono);
  font-size: 12px !important;
  letter-spacing: 0.06em;
  color: var(--mist) !important;
  margin: 0 !important;
}

/* ---------- 图片容器 ---------- */
.page-products .pp-media {
  margin: clamp(28px, 4vw, 44px) 0 0;
  border: 1px solid var(--line);
  background: var(--deep);
  overflow: hidden;
}

.page-products .pp-section--deep .pp-media {
  border-color: var(--line-dark);
}

.page-products .pp-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .pp-media__cap {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--on-dark-dim);
  padding: 11px 16px;
  border-top: 1px solid var(--line-dark);
  background: rgba(20, 22, 28, 0.86);
}

/* ---------- 版本时间轴 ---------- */
.page-products .pp-tl__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 30px;
}

.page-products .pp-tl__chip {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 8px 14px;
  border: 1px solid var(--line);
  color: var(--copper);
  background: var(--white);
  cursor: pointer;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-products .pp-tl__chip:hover {
  border-color: var(--gold);
  color: var(--ink);
}

.page-products #pp-tl-all:checked ~ .pp-tl__chips label[for="pp-tl-all"],
.page-products #pp-tl-entry:checked ~ .pp-tl__chips label[for="pp-tl-entry"],
.page-products #pp-tl-record:checked ~ .pp-tl__chips label[for="pp-tl-record"],
.page-products #pp-tl-help:checked ~ .pp-tl__chips label[for="pp-tl-help"] {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

.page-products .pp-tl__radio:focus-visible ~ .pp-tl__chips {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
}

.page-products #pp-tl-entry:checked ~ .pp-tl__body .pp-tl__node:not([data-cat="entry"]),
.page-products #pp-tl-record:checked ~ .pp-tl__body .pp-tl__node:not([data-cat="record"]),
.page-products #pp-tl-help:checked ~ .pp-tl__body .pp-tl__node:not([data-cat="help"]) {
  display: none;
}

.page-products .pp-tl__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-products .pp-tl__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-products .pp-tl__node {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 26px;
}

.page-products .pp-tl__rail {
  position: relative;
  display: flex;
  justify-content: center;
}

.page-products .pp-tl__dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--snow);
  border: 2px solid var(--gold);
  margin-top: 10px;
  flex: none;
  z-index: 1;
}

.page-products .pp-tl__node:not(:last-child) .pp-tl__rail::after {
  content: "";
  position: absolute;
  top: 25px;
  bottom: -4px;
  left: 50%;
  width: 1px;
  background: var(--gold-line);
  transform: translateX(-50%);
}

.page-products .pp-tl__node:last-child .pp-tl__dot {
  background: var(--gold);
}

.page-products .pp-tl__card {
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 2px solid var(--gold);
  padding: clamp(18px, 2.6vw, 26px);
  box-shadow: var(--shadow);
}

.page-products .pp-tl__ver {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.1em;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 10px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-products .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  background: var(--red);
  color: var(--white);
}

.page-products .pp-tl__card h3 {
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.45;
  margin: 0 0 10px;
}

.page-products .pp-tl__card p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--copper);
  margin: 0;
}

.page-products .pp-tl__more {
  margin-top: 14px;
  border-top: 1px dashed var(--line);
  padding-top: 12px;
}

.page-products .pp-tl__more summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.page-products .pp-tl__more summary::after {
  content: "+";
  font-size: 14px;
}

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

.page-products .pp-tl__more p {
  margin-top: 10px;
}

.page-products .pp-tl__side {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--deep);
  overflow: hidden;
}

.page-products .pp-tl__side img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 旧版本 ---------- */
.page-products .pp-legacy {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}

.page-products .pp-legacy__intro h2 {
  font-size: clamp(1.55rem, 3.4vw, 2.4rem);
  line-height: 1.24;
  letter-spacing: -0.015em;
  font-weight: 900;
  margin: 0 0 16px;
}

.page-products .pp-legacy__intro p {
  font-size: 15px;
  line-height: 1.85;
  color: rgba(20, 22, 28, 0.74);
  margin: 0 0 14px;
  max-width: 48ch;
}

.page-products .pp-legacy__hint {
  font-family: var(--font-mono);
  font-size: 12px !important;
  letter-spacing: 0.06em;
  color: var(--ink) !important;
  padding-left: 14px;
  border-left: 2px solid var(--red);
}

.page-products .pp-acc {
  border: 1px solid rgba(20, 22, 28, 0.18);
  background: var(--white);
}

.page-products .pp-acc + .pp-acc {
  margin-top: 10px;
}

.page-products .pp-acc summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}

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

.page-products .pp-acc summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--gold);
  flex: none;
}

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

.page-products .pp-acc[open] summary {
  border-bottom: 1px solid var(--line-soft);
}

.page-products .pp-acc__body {
  padding: 14px 18px 18px;
}

.page-products .pp-acc__body p {
  font-size: 14px;
  line-height: 1.85;
  color: var(--copper);
  margin: 0;
}

/* ---------- 记录明细 ---------- */
.page-products .pp-records {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-products .pp-axis {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.page-products .pp-axis__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
  margin: 0;
}

.page-products .pp-axis h3 {
  font-size: 1.02rem;
  line-height: 1.45;
  margin: 0 0 8px;
}

.page-products .pp-axis p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--copper);
  margin: 0;
}

.page-products .pp-records__note {
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink);
  margin: 20px 0 0;
  padding: 16px 18px;
  background: var(--white);
  border-left: 2px solid var(--gold);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-products .pp-records__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--deep);
  overflow: hidden;
}

.page-products .pp-records__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 版本支持 ---------- */
.page-products .pp-support {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}

.page-products .pp-support__lead h2 {
  font-size: clamp(1.5rem, 3.4vw, 2.4rem);
  line-height: 1.26;
  letter-spacing: -0.015em;
  font-weight: 900;
  margin: 0 0 16px;
  color: var(--snow);
}

.page-products .pp-support__lead p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--on-dark);
  margin: 0 0 24px;
  max-width: 52ch;
}

.page-products .pp-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-products .pp-support .btn--ghost {
  color: var(--snow);
  border-color: var(--line-dark);
}

.page-products .pp-support .btn--ghost:hover {
  border-color: var(--gold);
  color: var(--snow);
}

.page-products .pp-support__dl {
  margin: 0;
  border-top: 1px solid var(--line-dark);
}

.page-products .pp-support__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-dark-soft);
}

.page-products .pp-support__row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-products .pp-support__row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--snow);
  word-break: break-word;
}

.page-products .pp-support__note {
  font-size: 13px;
  line-height: 1.8;
  color: var(--on-dark-dim);
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 1px solid var(--gold-line);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-products .pp-channels {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .page-products .pp-channel--alt {
    margin-top: 34px;
  }

  .page-products .pp-axis {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }

  .page-products .pp-support__row {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-products .pp-hero__grid {
    grid-template-columns: minmax(0, 1.22fr) minmax(0, 0.78fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: center;
  }

  .page-products .pp-vcard {
    grid-template-columns: 1fr;
  }

  .page-products .pp-legacy {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }

  .page-products .pp-legacy__intro {
    position: sticky;
    top: 120px;
  }

  .page-products .pp-records {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .page-products .pp-support {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
  }
}

@media (min-width: 980px) {
  .page-products .pp-tl__body {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  }

  .page-products .pp-tl__side {
    position: sticky;
    top: 120px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-products .btn,
  .page-products .pp-tabs__btn,
  .page-products .pp-tl__chip,
  .page-products .breadcrumb__link {
    transition: none;
  }
}