.page-home {
  --home-idx-w: 172px;
  --home-gap: 40px;
  background: var(--paper);
  color: var(--rock);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.page-home .hero-grid {
  display: grid;
  gap: 30px;
  padding-block: 22px 34px;
}
.page-home .breadcrumb {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--ink-mute);
  margin-bottom: 16px;
}
.page-home .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-home .breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--ink-mute);
}
.page-home .hero-eyebrow {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--ink-soft);
  margin: 0 0 14px;
  text-transform: uppercase;
}
.page-home .hero-title {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.page-home .hero-version {
  font-family: var(--font-mono);
  font-size: clamp(72px, 20vw, 138px);
  line-height: .82;
  font-weight: 300;
  letter-spacing: -.05em;
  color: var(--rock);
  display: block;
}
.page-home .hero-line {
  font-size: clamp(22px, 5.2vw, 38px);
  line-height: 1.34;
  font-weight: 300;
  letter-spacing: .01em;
}
.page-home .hero-line::before {
  content: "";
  display: inline-block;
  width: 34px;
  height: 3px;
  background: var(--orange);
  vertical-align: middle;
  margin-right: 10px;
  transform: translateY(-6px);
}
.page-home .hero-lede {
  margin: 18px 0 0;
  max-width: 44ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink-soft);
}
.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.page-home .hero-actions .btn {
  padding: 12px 22px;
  font-size: 14.5px;
}
.page-home .hero-panel {
  margin-top: 26px;
  border: 1px solid var(--line-strong);
  background: var(--stone);
  max-width: 420px;
}
.page-home .hero-panel .panel-row + .panel-row {
  border-top: 1px solid var(--line);
}
.page-home .hero-panel .panel-key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--ink-mute);
}

.page-home .hero-visual {
  position: relative;
  padding-bottom: 6px;
}
.page-home .devices {
  position: relative;
  height: 360px;
}
.page-home .device {
  position: absolute;
  border-radius: 20px;
  border: 1px solid var(--line-strong);
  background: var(--stone);
}
.page-home .device--back {
  width: 46%;
  height: 76%;
  left: 3%;
  top: 12%;
  transform: rotate(-6deg);
  background: var(--silver);
}
.page-home .device--mid {
  width: 44%;
  height: 68%;
  right: 4%;
  top: 18%;
  transform: rotate(5deg);
  background: var(--stone);
}
.page-home .device--front {
  width: 56%;
  max-width: 232px;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  aspect-ratio: 9 / 19;
  border-radius: 24px;
  overflow: hidden;
  background: var(--paper);
  box-shadow: var(--shadow-paper-lg);
}
.page-home .device--front img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-home .device-cap {
  display: block;
  text-align: center;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ink-mute);
  margin-top: 12px;
}
.page-home .hero-ridge {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  width: 100%;
  height: 70px;
  pointer-events: none;
}

/* ---------- 公告滚动条 ---------- */
.page-home .ticker {
  background: var(--rock-deep);
  color: var(--silver);
  overflow: hidden;
}
.page-home .ticker-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-block: 10px;
  min-width: 0;
}
.page-home .ticker-label {
  flex: none;
  background: var(--orange);
  color: var(--rock-deep);
  font-size: 10.5px;
  letter-spacing: .14em;
  padding: 3px 8px;
}
.page-home .ticker-track {
  display: flex;
  gap: 34px;
  white-space: nowrap;
  animation: home-ticker 34s linear infinite;
  min-width: 0;
}
.page-home .ticker:hover .ticker-track,
.page-home .ticker:focus-within .ticker-track {
  animation-play-state: paused;
}
.page-home .ticker-item {
  font-size: 12px;
  letter-spacing: .02em;
  color: rgba(237,241,244,.86);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.page-home .ticker-item::before {
  content: "";
  width: 4px;
  height: 4px;
  background: var(--orange);
  display: inline-block;
}
@keyframes home-ticker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- 主体栅格与索引 ---------- */
.page-home .home-body {
  display: grid;
  gap: 0;
  padding-block: 0;
}
.page-home .home-index {
  padding-block: 16px;
  border-bottom: 1px solid var(--line);
}
.page-home .index-heading {
  font-size: 10.5px;
  letter-spacing: .18em;
  color: var(--ink-mute);
  margin: 0 0 10px;
}
.page-home .index-map {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  scrollbar-width: thin;
}
.page-home .index-map-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  background: var(--paper);
  white-space: nowrap;
  font-size: 12.5px;
  color: var(--rock);
  text-decoration: none;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}
.page-home .index-map-num {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-mute);
  letter-spacing: .06em;
}
.page-home .index-map-link:hover {
  border-color: var(--orange);
}
.page-home .index-map-link.is-active {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--rock-deep);
}
.page-home .index-map-link.is-active .index-map-num {
  color: var(--rock-deep);
}

/* ---------- 章节通用 ---------- */
.page-home .home-flow {
  min-width: 0;
}
.page-home .home-sec {
  padding-block: 44px;
  scroll-margin-top: calc(var(--header-h) + 16px);
}
.page-home .home-sec--band {
  background: var(--stone);
  box-shadow: 0 0 0 100vmax var(--stone);
  clip-path: inset(0 -100vmax);
}
.page-home .home-sec--dark {
  background: var(--rock);
  color: var(--paper);
  box-shadow: 0 0 0 100vmax var(--rock);
  clip-path: inset(0 -100vmax);
  --line: rgba(247,245,240,.18);
  --line-strong: rgba(247,245,240,.32);
}
.page-home .sec-head {
  max-width: 60ch;
  margin-bottom: 26px;
}
.page-home .sec-index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--orange);
  margin: 0 0 10px;
}
.page-home .sec-title {
  font-size: clamp(23px, 4.6vw, 34px);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -.01em;
  margin: 0;
}
.page-home .sec-lede {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-soft);
}
.page-home .home-sec--dark .sec-lede {
  color: rgba(247,245,240,.74);
}

/* ---------- 适配清单 ---------- */
.page-home .adapt-grid {
  display: grid;
  gap: 22px;
}
.page-home .figure {
  margin: 0;
}
.page-home .figure-frame {
  border: 1px solid var(--line-strong);
  background: var(--paper);
  box-shadow: var(--shadow-paper);
  overflow: hidden;
}
.page-home .figure-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-home .figure-cap {
  display: block;
  margin-top: 9px;
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--ink-mute);
}
.page-home .home-sec--dark .figure-cap {
  color: rgba(247,245,240,.6);
}
.page-home .adapt-panel {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-paper);
  padding: 14px;
}
.page-home .adapt-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.page-home .adapt-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: 2px 2px 0 rgba(58,63,68,.07);
  cursor: pointer;
  transition: border-color .18s var(--ease), background .18s var(--ease);
}
.page-home .adapt-item:hover {
  border-color: var(--line-strong);
}
.page-home .adapt-item:has(.adapt-check:checked) {
  border-color: var(--moss);
  background: #fff;
  box-shadow: 2px 2px 0 rgba(78,107,82,.18);
}
.page-home .adapt-check {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  flex: none;
  margin: 0;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  display: inline-grid;
  place-items: center;
  cursor: pointer;
}
.page-home .adapt-check:checked {
  background: var(--moss);
  border-color: var(--moss);
}
.page-home .adapt-check:checked::after {
  content: "";
  width: 9px;
  height: 5px;
  border-left: 2px solid var(--paper);
  border-bottom: 2px solid var(--paper);
  transform: rotate(-45deg) translate(1px, -1px);
}
.page-home .adapt-check:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}
.page-home .adapt-name {
  font-size: 14.5px;
  color: var(--rock);
}
.page-home .adapt-meta {
  margin-left: auto;
  font-size: 10.5px;
  letter-spacing: .04em;
  color: var(--ink-mute);
}
.page-home .adapt-result {
  margin: 14px 0 0;
  padding: 12px 14px;
  font-size: 13.5px;
  line-height: 1.72;
  background: var(--orange-soft);
  border-left: 3px solid var(--orange);
  color: var(--rock);
}
.page-home .adapt-result .result-on {
  display: none;
}
.page-home .adapt-panel:has(.adapt-check:checked) .adapt-result {
  background: var(--paper);
  border-left-color: var(--moss);
}
.page-home .adapt-panel:has(.adapt-check:checked) .result-off {
  display: none;
}
.page-home .adapt-panel:has(.adapt-check:checked) .result-on {
  display: inline;
}

/* ---------- 注册四步 ---------- */
.page-home .reg-grid {
  display: grid;
  gap: 26px;
}
.page-home .reg-list {
  list-style: none;
  counter-reset: reg;
  margin: 0;
  padding: 0;
}
.page-home .reg-list li {
  display: grid;
  grid-template-columns: 38px minmax(0,1fr);
  gap: 14px;
  padding-block: 18px;
  border-top: 1px solid var(--line);
}
.page-home .reg-list li:last-child {
  border-bottom: 1px solid var(--line);
}
.page-home .reg-list li::before {
  counter-increment: reg;
  content: counter(reg, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.35;
  color: var(--orange);
  letter-spacing: -.02em;
}
.page-home .reg-title {
  font-size: 16.5px;
  font-weight: 500;
  margin: 0 0 6px;
  line-height: 1.45;
}
.page-home .reg-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--ink-soft);
}

/* ---------- 版本通道 ---------- */
.page-home .chan-figure {
  margin-bottom: 26px;
}
.page-home .home-sec--dark .figure-frame {
  border-color: rgba(247,245,240,.3);
  box-shadow: 6px 6px 0 rgba(0,0,0,.22);
}
.page-home .compare {
  display: grid;
  gap: 14px;
}
.page-home .compare-side {
  --line: rgba(58,63,68,.16);
  --line-strong: rgba(58,63,68,.32);
  background: var(--paper);
  color: var(--rock);
  border: 1px solid rgba(247,245,240,.5);
  box-shadow: var(--shadow-paper);
  padding: 18px;
}
.page-home .compare-side .tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  padding: 3px 9px;
  margin: 0 0 12px;
}
.page-home .tag--orange {
  background: var(--orange);
  color: var(--rock-deep);
}
.page-home .tag--blue {
  background: var(--blue);
  color: var(--paper);
}
.page-home .tag--moss {
  background: var(--moss);
  color: var(--paper);
}
.page-home .chan-title {
  font-size: 18px;
  font-weight: 500;
  margin: 0 0 12px;
}
.page-home .chan-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}
.page-home .chan-list li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--ink-soft);
}
.page-home .chan-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background: var(--orange);
}
.page-home .compare-axis {
  display: none;
}
.page-home .compare-foot {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(247,245,240,.78);
  max-width: 62ch;
}
.page-home .chan-actions {
  margin-top: 20px;
}

/* ---------- 本期改动 ---------- */
.page-home .change-rail {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 14px;
  -webkit-overflow-scrolling: touch;
}
.page-home .change-card {
  flex: 0 0 252px;
  scroll-snap-align: start;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-paper);
  padding: 16px;
}
.page-home .change-card .tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  padding: 3px 8px;
  margin: 0 0 12px;
  color: var(--paper);
}
.page-home .change-card .tag--orange {
  background: var(--clay);
}
.page-home .change-card .tag--blue {
  background: var(--blue);
}
.page-home .change-card .tag--moss {
  background: var(--moss);
}
.page-home .change-text {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.55;
  margin: 0 0 10px;
}
.page-home .change-do {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  padding-top: 10px;
}
.page-home .change-more {
  margin-top: 18px;
}

/* ---------- 宽度预览 ---------- */
.page-home .preview-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}
.page-home .preview-tab {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--rock);
  text-decoration: none;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}
.page-home .preview-tab:hover {
  border-color: var(--orange);
  background: var(--orange-soft);
}
.page-home .preview-stages {
  min-height: 340px;
}
.page-home .preview-stage {
  display: none;
  text-align: center;
}
.page-home .preview-stage:target {
  display: block;
}
.page-home .preview-stages:not(:has(.preview-stage:target)) .preview-stage--default {
  display: block;
}
.page-home .preview-frame {
  width: 100%;
  margin-inline: auto;
  background: var(--silver);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-paper-lg);
  padding: 12px 12px 16px;
}
.page-home .preview-stage--320 .preview-frame { max-width: 320px; }
.page-home .preview-stage--375 .preview-frame { max-width: 375px; }
.page-home .preview-stage--414 .preview-frame { max-width: 414px; }
.page-home .mini-bar {
  height: 16px;
  background: var(--rock);
  margin-bottom: 9px;
}
.page-home .mini-title {
  height: 9px;
  width: 62%;
  background: rgba(58,63,68,.34);
  margin-bottom: 12px;
}
.page-home .mini-card {
  height: 34px;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: 2px 2px 0 rgba(58,63,68,.08);
  margin-bottom: 7px;
}
.page-home .mini-card--short {
  height: 22px;
  width: 74%;
}
.page-home .preview-cap {
  margin-top: 12px;
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--ink-mute);
}
.page-home .preview-note {
  margin: 24px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: 56ch;
  border-left: 3px solid var(--blue);
  padding-left: 14px;
}

/* ---------- 帮忙 ---------- */
.page-home .help-grid {
  display: grid;
  gap: 16px;
}
.page-home .help-card {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-paper);
  padding: 18px;
}
.page-home .help-label {
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--ink-mute);
  margin: 0 0 6px;
}
.page-home .help-label + .copy-btn + .copy-note + .help-label,
.page-home .help-card > .help-label:not(:first-child) {
  margin-top: 18px;
}
.page-home .copy-btn {
  display: inline-block;
  width: 100%;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--rock);
  background: var(--stone);
  border: 1px solid var(--line);
  padding: 9px 11px;
  cursor: pointer;
  overflow-wrap: anywhere;
  transition: background .18s var(--ease), border-color .18s var(--ease);
}
.page-home .copy-btn:hover {
  background: var(--orange-soft);
  border-color: var(--orange);
}
.page-home .help-phone {
  font-family: var(--font-mono);
  font-size: 20px;
  letter-spacing: .04em;
  margin: 0;
  color: var(--rock);
}
.page-home .help-hours {
  margin: 0;
  font-size: 13.5px;
  color: var(--ink-soft);
  line-height: 1.7;
}
.page-home .help-title {
  font-size: 17px;
  font-weight: 500;
  margin: 0 0 14px;
}
.page-home .help-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-home .help-list li {
  position: relative;
  padding-left: 20px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--ink-soft);
}
.page-home .help-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 2px;
  background: var(--orange);
}
.page-home .help-links {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--ink-soft);
}
.page-home .help-links a {
  color: var(--rock);
  text-decoration: none;
  border-bottom: 1px solid var(--orange);
  padding-bottom: 1px;
}
.page-home .help-links a:hover {
  color: var(--orange);
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-home .devices { height: 430px; }
  .page-home .device--front { max-width: 264px; }
  .page-home .home-sec { padding-block: 54px; }
  .page-home .help-grid { grid-template-columns: minmax(0,1fr) minmax(0,1.25fr); }
  .page-home .change-card { flex-basis: 268px; }
}

@media (min-width: 760px) {
  .page-home .compare {
    grid-template-columns: minmax(0,1fr) 1px minmax(0,1fr);
    align-items: stretch;
    gap: 22px;
  }
  .page-home .compare-axis {
    display: block;
    background: var(--blue);
    width: 1px;
    min-height: 100%;
  }
}

@media (min-width: 900px) {
  .page-home .hero-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
    gap: var(--home-gap);
    padding-block: 26px 52px;
  }
  .page-home .devices { height: 480px; }
  .page-home .device--front { max-width: 288px; }
  .page-home .hero-ridge { bottom: 0; height: 92px; }

  .page-home .home-body {
    grid-template-columns: var(--home-idx-w) minmax(0, 1fr);
    gap: var(--home-gap);
    align-items: start;
  }
  .page-home .home-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    padding-block: 36px;
    border-bottom: 0;
    border-right: 1px solid var(--line);
    padding-right: 16px;
  }
  .page-home .index-map {
    flex-direction: column;
    overflow: visible;
    gap: 4px;
  }
  .page-home .index-map-link {
    width: 100%;
    border-color: transparent;
    background: transparent;
    padding: 7px 9px;
  }
  .page-home .index-map-link:hover {
    background: var(--stone);
  }

  .page-home .adapt-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
    gap: 30px;
  }
  .page-home .reg-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
    gap: var(--home-gap);
  }
  .page-home .reg-figure {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }
  .page-home .change-card { flex-basis: 292px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .ticker-track {
    animation: none;
  }
  .page-home .adapt-item,
  .page-home .index-map-link,
  .page-home .preview-tab,
  .page-home .copy-btn {
    transition: none;
  }
}