.page-home {
  --home-gap: clamp(20px, 3vw, 34px);
  --home-pad: clamp(44px, 7vw, 96px);
  position: relative;
  overflow-x: hidden;
}

/* ---------- 封面首屏 ---------- */
.page-home .cover {
  position: relative;
  padding: clamp(30px, 6vw, 78px) 0 clamp(42px, 7vw, 96px);
  isolation: isolate;
}

.page-home .cover-rings {
  position: absolute;
  top: -18%;
  right: -22%;
  width: min(760px, 92vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  z-index: -1;
  pointer-events: none;
  opacity: 0.55;
  background:
    radial-gradient(circle, transparent 0 26%, rgba(242, 193, 78, 0.16) 26% 26.35%, transparent 26.35%),
    radial-gradient(circle, transparent 0 40%, rgba(242, 193, 78, 0.13) 40% 40.32%, transparent 40.32%),
    radial-gradient(circle, transparent 0 56%, rgba(255, 107, 0, 0.14) 56% 56.3%, transparent 56.3%),
    radial-gradient(circle, transparent 0 72%, rgba(255, 107, 0, 0.09) 72% 72.28%, transparent 72.28%);
}

.page-home .cover-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 46px);
  align-items: start;
}

.page-home .cover-rail {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-home .rail-no {
  color: var(--orange);
  font-weight: 700;
}

.page-home .rail-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.page-home .cover-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--orange);
}

.page-home .cover-title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 6.2vw, 4rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--text);
  text-shadow: 0 0 26px rgba(255, 107, 0, 0.22);
}

.page-home .cover-lede {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 15px;
  max-width: 36em;
}

.page-home .cover-lede li {
  position: relative;
  padding-left: 18px;
  font-size: 17px;
  line-height: 1.85;
  color: var(--mist);
}

.page-home .cover-lede li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.86em;
  width: 9px;
  height: 2px;
  background: var(--orange);
}

.page-home .cover-lede strong {
  display: inline-block;
  margin-right: 8px;
  color: var(--gold);
  font-weight: 700;
}

.page-home .cover-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.page-home .cover-actions .btn {
  transition: transform 0.18s ease;
}

.page-home .cover-actions .btn:active {
  transform: translateY(2px);
}

.page-home .cover-visual {
  position: relative;
  margin: 0;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid rgba(255, 107, 0, 0.36);
  box-shadow: var(--shadow-card), 0 0 22px rgba(255, 107, 0, 0.24);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.page-home .cover-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-home .cover-visual figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 30px 18px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold);
  background: linear-gradient(180deg, transparent, rgba(7, 22, 44, 0.92));
}

.page-home .cover-visual:hover {
  transform: translateY(-4px);
  border-color: var(--orange);
  box-shadow: var(--shadow-card), 0 0 34px rgba(255, 107, 0, 0.42);
}

@media (min-width: 880px) {
  .page-home .cover-inner {
    grid-template-columns: 74px minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: clamp(24px, 3vw, 52px);
  }

  .page-home .cover-rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    padding-top: 8px;
    height: 100%;
  }

  .page-home .cover-rail .rail-line {
    flex: none;
    width: 1px;
    height: 96px;
    background: linear-gradient(180deg, var(--gold), transparent);
  }

  .page-home .cover-rail .rail-label {
    writing-mode: vertical-rl;
    letter-spacing: 0.42em;
  }

  .page-home .cover-visual {
    margin-top: 32px;
  }
}

/* ---------- 通用小节标题 ---------- */
.page-home .sec-head {
  max-width: 42em;
}

.page-home .sec-head h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 3.6vw, 2.4rem);
  line-height: 1.22;
  letter-spacing: -0.005em;
  color: var(--text);
}

.page-home .sec-sub {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 三项核心升级 ---------- */
.page-home .upgrades {
  padding: var(--home-pad) 0;
}

.page-home .upgrade-grid {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-home .upgrade-card {
  position: relative;
  padding: 26px 24px 28px;
  border-radius: 20px;
  background: linear-gradient(160deg, var(--ink-700), var(--ink-900));
  border: 1px solid rgba(255, 107, 0, 0.26);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-home .upgrade-card:hover {
  transform: translateY(-4px);
  border-color: var(--orange);
  box-shadow: 0 0 26px rgba(255, 107, 0, 0.34);
}

.page-home .up-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.08em;
  color: var(--gold);
  transition: color 0.25s ease;
}

.page-home .upgrade-card:hover .up-num {
  color: var(--orange);
}

.page-home .upgrade-card h3 {
  margin: 14px 0 0;
  font-size: 21px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
}

.page-home .up-stat {
  margin: 12px 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-home .up-stat .stat-num {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-home .upgrade-card p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-home .up-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  margin-top: 12px;
  font-weight: 600;
  font-size: 15px;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, gap 0.25s ease;
}

.page-home .up-link:hover,
.page-home .up-link:focus-visible {
  border-bottom-color: var(--orange);
  gap: 13px;
}

@media (min-width: 780px) {
  .page-home .upgrade-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
    padding-bottom: 78px;
  }

  .page-home .upgrade-card:nth-child(2) {
    margin-top: 30px;
  }

  .page-home .upgrade-card:nth-child(3) {
    margin-top: 60px;
  }
}

/* ---------- 改版时间轴 ---------- */
.page-home .timeline {
  position: relative;
  overflow: hidden;
  padding: clamp(52px, 8vw, 104px) 0;
  background: var(--ink-900);
  border-top: 1px solid rgba(242, 193, 78, 0.18);
  border-bottom: 1px solid rgba(242, 193, 78, 0.18);
}

.page-home .timeline::after {
  content: "";
  position: absolute;
  top: -60px;
  left: -10%;
  width: 120%;
  height: 130px;
  background: linear-gradient(180deg, rgba(255, 107, 0, 0.14), transparent);
  transform: rotate(-1.6deg);
  pointer-events: none;
}

.page-home .timeline-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-home .timeline-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.32;
}

.page-home .timeline-inner {
  position: relative;
  z-index: 1;
}

.page-home .tl-track {
  list-style: none;
  margin: 38px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-home .tl-stop {
  position: relative;
  padding-top: 30px;
}

.page-home .tl-stop::before {
  content: "";
  position: absolute;
  top: 7px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--orange), rgba(242, 193, 78, 0.14));
}

.page-home .tl-dot {
  position: absolute;
  top: 1px;
  left: 0;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 16px rgba(255, 107, 0, 0.85);
}

.page-home .tl-step {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.page-home .tl-stop h3 {
  margin: 12px 0 0;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
}

.page-home .tl-stop p {
  margin: 10px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 34em;
}

@media (min-width: 780px) {
  .page-home .tl-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }

  .page-home .tl-stop {
    padding-right: 30px;
  }

  .page-home .tl-stop:last-child {
    padding-right: 0;
  }

  .page-home .tl-stop::before {
    right: 14px;
  }
}

/* ---------- 苹果设备通道速览 ---------- */
.page-home .channel {
  padding: var(--home-pad) 0;
}

.page-home .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-home .channel-figure {
  margin: 0;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid rgba(255, 107, 0, 0.24);
  background: var(--ink-700);
}

.page-home .channel-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-home .channel-figure figcaption {
  padding: 12px 18px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold);
  background: var(--ink-900);
}

.page-home .channel-body h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.4vw, 2.25rem);
  line-height: 1.24;
  color: var(--text);
}

.page-home .channel-body .prose {
  margin: 18px 0 0;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 36em;
}

.page-home .channel-stats {
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.page-home .stat-item {
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  background: var(--ink-700);
  border-left: 2px solid var(--orange);
}

.page-home .stat-item dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-home .stat-item dd {
  margin: 8px 0 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}

.page-home .stat-item .stat-num {
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--orange);
  text-shadow: 0 0 16px rgba(255, 107, 0, 0.45);
}

.page-home .check-title {
  margin: 32px 0 0;
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
}

.page-home .check-steps {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-home .check-steps li {
  position: relative;
  padding-left: 40px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-home .ck-num {
  position: absolute;
  left: 0;
  top: 2px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--orange);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--orange);
}

.page-home .channel-body .btn {
  margin-top: 26px;
}

@media (min-width: 900px) {
  .page-home .channel-grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: clamp(32px, 4vw, 60px);
  }

  .page-home .channel-figure {
    position: sticky;
    top: calc(var(--hdr-h) + 24px);
  }
}

/* ---------- 常用页面入口 ---------- */
.page-home .directory {
  padding: var(--home-pad) 0;
}

.page-home .directory-map {
  margin: 34px 0 0;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid rgba(242, 193, 78, 0.2);
}

.page-home .directory-map img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-home .dir-groups {
  margin-top: 36px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-home .dir-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.page-home .dir-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.page-home .dir-dot--gold {
  background: var(--gold);
  box-shadow: 0 0 12px rgba(242, 193, 78, 0.7);
}

.page-home .dir-dot--jade {
  background: var(--jade);
  box-shadow: 0 0 12px rgba(18, 184, 134, 0.7);
}

.page-home .dir-dot--coral {
  background: var(--coral);
  box-shadow: 0 0 12px rgba(229, 72, 77, 0.7);
}

.page-home .dir-dot--orange {
  background: var(--orange);
  box-shadow: 0 0 12px rgba(255, 107, 0, 0.7);
}

.page-home .dir-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-home .dir-list a {
  display: block;
  min-height: 44px;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  background: var(--ink-700);
  border: 1px solid rgba(143, 163, 191, 0.16);
  text-decoration: none;
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.page-home .dir-list a:hover,
.page-home .dir-list a:focus-visible {
  transform: translateY(-3px);
  border-color: var(--orange);
  background: var(--ink-600);
}

.page-home .dir-name {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: var(--orange);
}

.page-home .dir-desc {
  display: block;
  margin-top: 6px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--mist);
}

@media (min-width: 640px) {
  .page-home .dir-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-home .dir-groups {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
  }
}

/* ---------- 反馈与帮助 ---------- */
.page-home .feedback {
  padding: var(--home-pad) 0;
  background: linear-gradient(180deg, transparent, rgba(19, 41, 75, 0.6));
}

.page-home .feedback-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}

.page-home .feedback-main h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  line-height: 1.24;
  color: var(--text);
}

.page-home .feedback-main .prose {
  margin: 18px 0 0;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 36em;
}

.page-home .feedback-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

.page-home .feedback-actions .btn:active {
  transform: translateY(2px);
}

.page-home .feedback-panel {
  padding: 26px 24px 28px;
  border-radius: 20px;
}

.page-home .feedback-panel h3 {
  margin: 0 0 16px;
  font-size: 19px;
  font-weight: 800;
  color: var(--brown);
}

.page-home .fb-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-home .fb-flow li {
  position: relative;
  padding-left: 42px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--brown);
}

.page-home .fb-idx {
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--orange);
}

@media (min-width: 900px) {
  .page-home .feedback-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }
}

/* ---------- 持续更新预告 ---------- */
.page-home .upnext {
  padding: var(--home-pad) 0 calc(var(--home-pad) * 0.8);
}

.page-home .upnext-list {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-home .upnext-list li {
  padding: 24px 22px 26px;
  border-radius: 20px;
  background: var(--ink-700);
  border-top: 2px solid var(--gold);
  transition: transform 0.3s ease, border-top-color 0.3s ease;
}

.page-home .upnext-list li:hover {
  transform: translateY(-4px);
  border-top-color: var(--orange);
}

.page-home .un-mono {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-home .upnext-list h3 {
  margin: 12px 0 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
}

.page-home .upnext-list p {
  margin: 10px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-home .upnext-cta {
  margin-top: 30px;
}

.page-home .upnext-cta .btn:active {
  transform: translateY(2px);
}

@media (min-width: 820px) {
  .page-home .upnext-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 收束索引条 ---------- */
.page-home .closing {
  padding: 0 0 clamp(34px, 6vw, 64px);
}

.page-home .closing-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-home .closing-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(143, 163, 191, 0.2);
  border: 1px solid rgba(143, 163, 191, 0.2);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-home .closing-index a {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 56px;
  padding: 14px 16px;
  background: var(--ink-900);
  text-decoration: none;
  transition: background 0.25s ease, color 0.25s ease;
}

.page-home .closing-index a:hover,
.page-home .closing-index a:focus-visible {
  background: var(--ink-700);
}

.page-home .ci-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
  transition: color 0.25s ease;
}

.page-home .closing-index a:hover .ci-idx {
  color: var(--orange);
}

.page-home .ci-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

@media (min-width: 860px) {
  .page-home .closing-index {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-home .closing-index a {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 20px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-home .cover-visual,
  .page-home .upgrade-card,
  .page-home .dir-list a,
  .page-home .upnext-list li,
  .page-home .cover-actions .btn,
  .page-home .feedback-actions .btn,
  .page-home .upnext-cta .btn {
    transition: none;
  }

  .page-home .cover-visual:hover,
  .page-home .upgrade-card:hover,
  .page-home .dir-list a:hover,
  .page-home .upnext-list li:hover {
    transform: none;
  }
}