/* ============ 应用与下载页 ============ */

.page-products {
  --pd-gap: clamp(20px, 4vw, 44px);
  --pd-notch: 12px;
}

.page-products .crumbs {
  padding-top: clamp(16px, 2.4vw, 26px);
}

/* ---------- 首屏 ---------- */

.page-products .pd-hero {
  position: relative;
  padding: clamp(24px, 3.6vw, 40px) 0 clamp(26px, 4vw, 44px);
  background:
    radial-gradient(900px 420px at 78% -8%, rgba(43, 74, 150, .55), transparent 62%),
    radial-gradient(600px 320px at 8% 110%, rgba(255, 122, 44, .14), transparent 65%);
  overflow: hidden;
}

.page-products .pd-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-products .pd-hero__lead .mono-index {
  display: inline-block;
  margin-bottom: 4px;
}

.page-products .pd-hero h1 {
  margin: 10px 0 16px;
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: .04em;
  font-size: clamp(29px, 5.6vw, 46px);
  line-height: 1.24;
  color: var(--mist);
  text-wrap: balance;
}

.page-products .pd-hero__intro {
  margin: 0;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.85;
  color: var(--slate);
}

.page-products .pd-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-products .pd-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
  color: var(--slate);
}

.page-products .pd-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.page-products .pd-hero__facts .mono-index {
  color: var(--neon);
}

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

.page-products .pd-hero__visual .media-frame {
  border: 1px solid var(--line);
  background: var(--ink-2);
}

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

.page-products .pd-hero__visual::before,
.page-products .pd-hero__visual::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid var(--neon);
  pointer-events: none;
}

.page-products .pd-hero__visual::before {
  top: -7px;
  left: -7px;
  border-right: 0;
  border-bottom: 0;
}

.page-products .pd-hero__visual::after {
  right: -7px;
  bottom: -7px;
  border-top: 0;
  border-left: 0;
}

/* ---------- 横向分支线 ---------- */

.page-products .pd-branch {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: clamp(26px, 4vw, 46px);
  padding-top: 28px;
}

.page-products .pd-branch__line {
  position: absolute;
  top: 11px;
  left: 6%;
  right: 6%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon) 12%, var(--neon) 88%, transparent);
  opacity: .5;
}

.page-products .pd-branch__node {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 6px;
  text-decoration: none;
  color: var(--slate);
  font-size: 14px;
  letter-spacing: .02em;
  transition: color var(--dur) var(--ease);
}

.page-products .pd-branch__dot {
  position: absolute;
  top: -22px;
  width: 11px;
  height: 11px;
  border: 2px solid var(--neon);
  border-radius: 50%;
  background: var(--ink);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-products .pd-branch__node:hover,
.page-products .pd-branch__node:focus-visible {
  color: var(--mist);
}

.page-products .pd-branch__node:hover .pd-branch__dot,
.page-products .pd-branch__node:focus-visible .pd-branch__dot {
  background: var(--orange);
  border-color: var(--orange);
  transform: scale(1.18);
}

.page-products .pd-branch__label {
  white-space: nowrap;
}

/* ---------- 章节通用 ---------- */

.page-products .pd-section {
  position: relative;
  padding: clamp(46px, 6.4vw, 88px) 0;
}

.page-products .pd-section__head {
  max-width: 46rem;
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-products .pd-section__head h2,
.page-products .pd-export h2,
.page-products .pd-apple h2 {
  margin: 10px 0 14px;
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: .04em;
  font-size: clamp(25px, 3.8vw, 34px);
  line-height: 1.28;
  color: var(--mist);
  text-wrap: balance;
}

.page-products .pd-section__lead,
.page-products .pd-export__lead,
.page-products .pd-apple__lead {
  margin: 0;
  max-width: 40em;
  font-size: 17px;
  line-height: 1.85;
  color: var(--slate);
}

.page-products .pd-section__head .mono-index {
  color: var(--neon);
}

/* ---------- 设备分支切换 ---------- */

.page-products .pd-choose {
  background: linear-gradient(180deg, transparent, rgba(22, 36, 74, .55) 40%, transparent);
}

.page-products .pd-switch {
  position: relative;
}

.page-products .pd-switch__radio {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-products .pd-switch__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.page-products .pd-switch__tab {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 18px;
  border: 1px solid var(--line);
  background: var(--ink-2);
  color: var(--slate);
  font-size: 15px;
  letter-spacing: .02em;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .pd-switch__tab .mono-index {
  color: var(--slate);
  transition: color var(--dur) var(--ease);
}

.page-products .pd-switch__tab:hover {
  border-color: var(--neon);
  color: var(--mist);
}

.page-products #pd-dev-ios:checked ~ .pd-switch__tabs .pd-switch__tab[for="pd-dev-ios"],
.page-products #pd-dev-android:checked ~ .pd-switch__tabs .pd-switch__tab[for="pd-dev-android"],
.page-products #pd-dev-desktop:checked ~ .pd-switch__tabs .pd-switch__tab[for="pd-dev-desktop"] {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--deep);
}

.page-products #pd-dev-ios:checked ~ .pd-switch__tabs .pd-switch__tab[for="pd-dev-ios"] .mono-index,
.page-products #pd-dev-android:checked ~ .pd-switch__tabs .pd-switch__tab[for="pd-dev-android"] .mono-index,
.page-products #pd-dev-desktop:checked ~ .pd-switch__tabs .pd-switch__tab[for="pd-dev-desktop"] .mono-index {
  color: var(--deep);
}

.page-products .pd-switch:has(#pd-dev-ios:focus-visible) .pd-switch__tab[for="pd-dev-ios"],
.page-products .pd-switch:has(#pd-dev-android:focus-visible) .pd-switch__tab[for="pd-dev-android"],
.page-products .pd-switch:has(#pd-dev-desktop:focus-visible) .pd-switch__tab[for="pd-dev-desktop"] {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}

.page-products .pd-device {
  display: none;
  padding: clamp(22px, 3vw, 34px);
}

.page-products #pd-dev-ios:checked ~ .pd-switch__panels .pd-device[data-device="ios"],
.page-products #pd-dev-android:checked ~ .pd-switch__panels .pd-device[data-device="android"],
.page-products #pd-dev-desktop:checked ~ .pd-switch__panels .pd-device[data-device="desktop"] {
  display: block;
  background: linear-gradient(140deg, rgba(43, 74, 150, .34), rgba(22, 36, 74, .8));
}

.page-products .pd-device__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: .04em;
  color: var(--mist);
}

.page-products .pd-device__why {
  margin: 0 0 22px;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--slate);
}

/* ---------- 苹果下载 ---------- */

.page-products .pd-apple__head {
  max-width: 46rem;
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-products .pd-apple__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 36px);
  align-items: start;
}

.page-products .pd-steps {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pd-steps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-products .pd-steps__item:first-child {
  border-top: 1px solid var(--line);
}

.page-products .pd-steps__num {
  color: var(--orange);
  padding-top: 3px;
}

.page-products .pd-steps__item h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: .03em;
  color: var(--mist);
}

.page-products .pd-steps__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

.page-products .pd-apple__note {
  padding: clamp(22px, 3vw, 30px);
  background: linear-gradient(160deg, rgba(255, 122, 44, .16), rgba(22, 36, 74, .85));
  border-color: rgba(255, 122, 44, .45);
}

.page-products .pd-apple__note .mono-index {
  color: var(--orange-soft);
}

.page-products .pd-apple__note h3 {
  margin: 10px 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: .03em;
  color: var(--mist);
}

.page-products .pd-apple__note p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
}

.page-products .pd-apple__note-foot {
  margin-top: 16px !important;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 122, 44, .3);
}

.page-products .pd-apple__note-foot a {
  color: var(--orange-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .pd-apple__note-foot a:hover {
  color: var(--neon);
}

/* ---------- 大陆版导出 ---------- */

.page-products .pd-export {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--deep), var(--ink) 55%, var(--deep));
}

.page-products .pd-export__bg {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: .26;
}

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

.page-products .pd-export::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(95deg, var(--deep) 4%, rgba(7, 12, 28, .62) 58%, rgba(7, 12, 28, .92) 100%);
}

.page-products .pd-export__grid {
  position: relative;
  z-index: 1;
}

.page-products .pd-export__body {
  max-width: 52rem;
}

.page-products .pd-flow {
  position: relative;
  display: grid;
  gap: 22px;
  margin: 30px 0 0;
  padding: 0 0 0 34px;
  list-style: none;
}

.page-products .pd-flow::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--neon), rgba(53, 227, 201, .12));
}

.page-products .pd-flow__step {
  position: relative;
}

.page-products .pd-flow__step::before {
  content: "";
  position: absolute;
  top: 4px;
  left: -30px;
  width: 11px;
  height: 11px;
  border: 2px solid var(--neon);
  border-radius: 50%;
  background: var(--ink);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .pd-flow__step:hover::before {
  background: var(--orange);
  border-color: var(--orange);
}

.page-products .pd-flow__step .mono-index {
  color: var(--neon);
}

.page-products .pd-flow__step h3 {
  margin: 6px 0 6px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: .03em;
  color: var(--mist);
}

.page-products .pd-flow__step p {
  margin: 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
}

.page-products .pd-export__foot {
  margin: 30px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

/* ---------- 适配清单 ---------- */

.page-products .pd-check {
  background: linear-gradient(180deg, transparent, rgba(22, 36, 74, .5) 30%, rgba(7, 12, 28, .6));
}

.page-products .pd-check__banner {
  margin: 0 0 clamp(30px, 4vw, 52px);
  border: 1px solid var(--line);
}

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

.page-products .pd-check__net {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: center;
  margin-bottom: clamp(26px, 3.4vw, 40px);
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line);
  background: linear-gradient(120deg, rgba(43, 74, 150, .28), rgba(7, 12, 28, .5));
  clip-path: polygon(0 0, calc(100% - var(--pd-notch)) 0, 100% var(--pd-notch), 100% 100%, var(--pd-notch) 100%, 0 calc(100% - var(--pd-notch)));
}

.page-products .pd-check__net-media {
  margin: 0;
}

.page-products .pd-check__net-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-products .pd-check__net-copy .mono-index {
  color: var(--orange-soft);
}

.page-products .pd-check__net-copy h3 {
  margin: 10px 0 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: .03em;
  color: var(--mist);
}

.page-products .pd-check__net-copy p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
}

.page-products .pd-check__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-products .pd-dim {
  padding: 20px;
  background: rgba(22, 36, 74, .62);
}

.page-products .pd-dim__title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-products .pd-dim__title .mono-index {
  color: var(--neon);
}

.page-products .pd-dim__rows {
  display: grid;
  gap: 2px;
}

.page-products .pd-check__row {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 11px;
  padding: 11px 8px;
  cursor: pointer;
  transition: background var(--dur) var(--ease);
}

.page-products .pd-check__row:hover {
  background: rgba(43, 74, 150, .35);
}

.page-products .pd-check__input {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-products .pd-check__mark {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border: 1px solid var(--line);
  background: var(--ink);
  flex: none;
  clip-path: polygon(0 0, calc(100% - 5px) 0, 100% 5px, 100% 100%, 5px 100%, 0 calc(100% - 5px));
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .pd-check__mark::after {
  content: "";
  position: absolute;
  top: 5px;
  left: 5px;
  width: 8px;
  height: 4px;
  border-left: 2px solid var(--deep);
  border-bottom: 2px solid var(--deep);
  transform: rotate(-45deg) scale(0);
  transform-origin: center;
  transition: transform var(--dur) var(--ease);
}

.page-products .pd-check__input:checked + .pd-check__mark {
  background: var(--orange);
  border-color: var(--orange);
}

.page-products .pd-check__input:checked + .pd-check__mark::after {
  transform: rotate(-45deg) scale(1);
}

.page-products .pd-check__input:focus-visible + .pd-check__mark {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}

.page-products .pd-check__text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
  transition: color var(--dur) var(--ease);
}

.page-products .pd-check__input:checked ~ .pd-check__text {
  color: var(--mist);
}

.page-products .pd-check__tip {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

/* ---------- 版本节奏 ---------- */

.page-products .pd-version {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--deep) 0%, var(--ink) 45%, var(--deep) 100%);
}

.page-products .pd-version__bg {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0;
  height: 62%;
  opacity: .2;
}

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

.page-products .pd-version__inner {
  position: relative;
  z-index: 1;
}

.page-products .pd-version__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-products .pd-version__item {
  padding: 0 0 16px;
  transition: transform var(--dur) var(--ease);
}

.page-products .pd-version__code {
  display: block;
  padding: 9px 14px;
  margin-bottom: 14px;
  background: var(--ink-2);
  border-left: 3px solid var(--neon);
  color: var(--neon);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-products .pd-version__item:hover .pd-version__code,
.page-products .pd-version__item:focus-within .pd-version__code {
  background: var(--ink-3);
  color: var(--mist);
}

.page-products .pd-version__item.is-current .pd-version__code {
  background: var(--orange);
  border-left-color: var(--orange-soft);
  color: var(--deep);
}

.page-products .pd-version__item h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: .03em;
  color: var(--mist);
}

.page-products .pd-version__item.is-current h3 {
  color: var(--orange-soft);
}

.page-products .pd-version__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

.page-products .pd-version__foot {
  margin: 30px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
}

.page-products .pd-version__foot a {
  color: var(--orange-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-products .pd-version__foot a:hover {
  color: var(--neon);
}

/* ---------- 装完之后 ---------- */

.page-products .pd-help__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-products .pd-help__card {
  padding: clamp(20px, 2.8vw, 28px);
  background: rgba(22, 36, 74, .62);
}

.page-products .pd-help__card .mono-index {
  color: var(--orange);
}

.page-products .pd-help__card h3 {
  margin: 12px 0 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: .03em;
  color: var(--mist);
}

.page-products .pd-help__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
}

.page-products .pd-help__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-products .pd-check__net {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 26px;
  }

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

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

@media (min-width: 900px) {
  .page-products .pd-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: clamp(30px, 4vw, 60px);
  }

  .page-products .pd-hero__lead {
    padding-bottom: 6px;
  }

  .page-products .pd-apple__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .85fr);
  }

  .page-products .pd-version__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 26px;
  }
}

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

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

@media (prefers-reduced-motion: reduce) {
  .page-products .pd-branch__dot,
  .page-products .pd-switch__tab,
  .page-products .pd-check__mark,
  .page-products .pd-check__mark::after,
  .page-products .pd-flow__step::before,
  .page-products .pd-version__code {
    transition: none;
  }
}
</main>