.page-home {
  --rail-w: 210px;
  --home-gap: 56px;
  background: var(--c-ink);
  color: var(--c-text);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* 阅读进度条 */
.page-home .home-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--c-signal), var(--c-celadon));
  transform: scaleX(0);
  transform-origin: 0 50%;
  z-index: 95;
  pointer-events: none;
}

/* 首屏 */
.page-home .home-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(84px, 13vw, 148px) 0 clamp(52px, 8vw, 92px);
  border-bottom: 1px solid var(--c-line);
}

.page-home .hero-media {
  position: absolute;
  inset: 0;
  z-index: -3;
}

.page-home .hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .4;
  filter: saturate(.65);
}

.page-home .hero-slash {
  position: absolute;
  inset: -2px;
  display: block;
  z-index: -2;
  pointer-events: none;
}

.page-home .hero-slash--signal {
  background: linear-gradient(128deg, rgba(255, 122, 41, .72) 0%, rgba(255, 122, 41, .16) 28%, rgba(255, 122, 41, 0) 54%);
  clip-path: polygon(0 0, 58% 0, 31% 100%, 0 100%);
}

.page-home .hero-slash--celadon {
  background: linear-gradient(200deg, rgba(63, 169, 142, .52) 0%, rgba(63, 169, 142, 0) 62%);
  clip-path: polygon(70% 0, 100% 0, 100% 100%, 44% 100%);
}

.page-home .home-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(120% 92% at 22% 46%, rgba(14, 27, 51, .76) 0%, rgba(14, 27, 51, 0) 64%);
  pointer-events: none;
}

.page-home .hero-inner {
  position: relative;
}

.page-home .hero-kicker {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--c-signal-soft);
}

.page-home .hero-title {
  margin: 0;
  max-width: 15em;
  font-family: var(--font-head);
  font-size: clamp(28px, 5.2vw, 46px);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -.01em;
  color: #fff;
}

.page-home .hero-lead {
  margin: 22px 0 0;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-text);
}

.page-home .hero-paths {
  list-style: none;
  margin: 42px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-home .hero-path {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 20px 20px 22px;
  background: rgba(22, 37, 63, .8);
  border: 1px solid var(--c-line-2);
  border-left: 3px solid var(--c-signal);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--c-text);
  transition: transform .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
}

.page-home .hero-path:hover,
.page-home .hero-path:focus-visible {
  transform: translateY(-3px);
  border-color: var(--c-signal);
  background: rgba(29, 46, 76, .94);
}

.page-home .hero-path-idx {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-signal);
}

.page-home .hero-path-title {
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 600;
  color: #fff;
}

.page-home .hero-path-desc {
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-muted);
}

/* 主体双栏 */
.page-home .home-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding-top: clamp(48px, 7vw, 84px);
  padding-bottom: clamp(56px, 8vw, 96px);
}

.page-home .home-rail {
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
  padding: 16px 0;
}

.page-home .rail-label {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--c-muted);
}

.page-home .toc {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.page-home .toc::-webkit-scrollbar {
  display: none;
}

.page-home .toc-link {
  flex: 0 0 auto;
  padding: 7px 12px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--c-muted);
  text-decoration: none;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-home .toc-link:hover {
  color: var(--c-text);
  border-color: var(--c-line-2);
}

.page-home .toc-link.is-active {
  color: var(--c-celadon);
  border-color: var(--c-celadon);
  background: rgba(63, 169, 142, .1);
}

.page-home .home-content {
  display: flex;
  flex-direction: column;
  gap: clamp(56px, 8vw, 104px);
  min-width: 0;
}

/* 章节通用 */
.page-home .section {
  scroll-margin-top: 100px;
}

.page-home .section-label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--c-celadon);
}

.page-home .section-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 600;
  line-height: 1.34;
  color: #fff;
}

.page-home .section .prose {
  margin: 18px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-text);
}

.page-home .section .prose + .prose {
  margin-top: 12px;
}

/* 档案盒 */
.page-home .archive-grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-home .archive-grid .archive-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 22px 24px;
  background: var(--c-plate);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  transition: transform .24s var(--ease), border-color .24s var(--ease), box-shadow .24s var(--ease);
}

.page-home .archive-grid .archive-card:hover {
  transform: translateY(-4px);
  border-color: var(--c-line-2);
  box-shadow: var(--shadow);
}

.page-home .card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.page-home .card-index {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-muted);
}

.page-home .card-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: #fff;
}

.page-home .card-divider {
  height: 1px;
  background: var(--c-line);
}

.page-home .archive-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-home .tag {
  display: inline-block;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  border: 1px solid currentColor;
  border-radius: var(--radius);
  white-space: nowrap;
}

.page-home .tag--celadon {
  color: var(--c-celadon);
}

.page-home .tag--signal {
  color: var(--c-signal);
}

.page-home .tag--paper {
  color: var(--c-paper-line);
}

/* 版本与资料 */
.page-home .version-split {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-home .version-copy {
  min-width: 0;
}

.page-home .figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-home .figure-media {
  overflow: hidden;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-plate);
}

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

.page-home .figure-caption {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.72;
  color: var(--c-muted);
}

.page-home .panel {
  margin-top: 22px;
  border: 1px solid var(--c-line-2);
  border-radius: var(--radius);
  background: var(--c-plate);
  overflow: hidden;
}

.page-home .panel summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
  cursor: pointer;
  list-style: none;
}

.page-home .panel summary::-webkit-details-marker {
  display: none;
}

.page-home .panel summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--c-celadon);
}

.page-home .panel[open] summary::before {
  content: "−";
}

.page-home .panel-body {
  padding: 0 18px 18px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-muted);
  animation: home-panel-in .12s var(--ease) both;
}

.page-home .panel-body p {
  margin: 0;
}

@keyframes home-panel-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.page-home .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  padding: 11px 20px;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--c-line-2);
  border-radius: var(--radius);
  color: var(--c-text);
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

.page-home .btn--ghost:hover {
  border-color: var(--c-celadon);
  color: var(--c-celadon);
  background: rgba(63, 169, 142, .08);
}

/* 本地服务范围 */
.page-home .coverage-layout {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-home .coverage-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.page-home .coverage-list li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--c-line);
}

.page-home .coverage-list li:last-child {
  border-bottom: 1px solid var(--c-line);
}

.page-home .coverage-idx {
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-celadon);
}

.page-home .coverage-list strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 600;
  color: #fff;
}

.page-home .coverage-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--c-muted);
}

/* 通道与帮助 */
.page-home .channel-figure {
  margin-top: 30px;
}

.page-home .channel-grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-home .channel-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 24px 24px;
  background: var(--c-plate);
  border: 1px solid var(--c-line-2);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--c-text);
  transition: transform .24s var(--ease), border-color .24s var(--ease), background .24s var(--ease);
}

.page-home .channel-card:hover {
  transform: translateY(-4px);
  background: var(--c-plate-2);
}

.page-home .channel-card--signal {
  border-color: var(--c-signal);
  box-shadow: inset 0 0 0 1px rgba(255, 122, 41, .22);
}

.page-home .channel-card--signal:hover {
  border-color: var(--c-signal-soft);
}

.page-home .channel-card .tag {
  align-self: flex-start;
}

.page-home .channel-card h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 600;
  color: #fff;
}

.page-home .channel-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-home .channel-go {
  margin-top: auto;
  padding-top: 8px;
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--c-signal);
}

.page-home .channel-card:not(.channel-card--signal) .channel-go {
  color: var(--c-celadon);
}

/* 下一步 */
.page-home .next-grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-home .next-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 22px;
  text-decoration: none;
  color: var(--c-text);
  border: 1px solid var(--c-line);
  border-top: 3px solid var(--c-celadon);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(63, 169, 142, .1), rgba(63, 169, 142, 0) 62%);
  transition: transform .24s var(--ease), border-color .24s var(--ease);
}

.page-home .next-card:hover {
  transform: translateY(-4px);
  border-color: var(--c-celadon);
}

.page-home .next-step {
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--c-celadon);
}

.page-home .next-card h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 600;
  color: #fff;
}

.page-home .next-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--c-muted);
}

.page-home .home-legal {
  margin: 34px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-home .home-legal a {
  color: var(--c-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color .2s var(--ease);
}

.page-home .home-legal a:hover {
  color: var(--c-celadon);
}

/* 中等屏幕 */
@media (min-width: 700px) {
  .page-home .archive-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-home .hero-paths {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 780px) {
  .page-home .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .next-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-home .version-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 40px;
    align-items: start;
  }

  .page-home .coverage-layout {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: 40px;
    align-items: start;
  }
}

/* 桌面端侧边轨道 */
@media (min-width: 1000px) {
  .page-home .home-body {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: var(--home-gap);
  }

  .page-home .home-rail {
    position: sticky;
    top: 96px;
    align-self: start;
    border-top: 1px solid var(--c-line);
    border-bottom: none;
    border-right: 1px solid var(--c-line);
    padding: 20px 20px 24px 0;
  }

  .page-home .toc {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-home .toc-link {
    padding: 8px 10px;
    border-color: transparent;
    border-left: 2px solid var(--c-line);
    border-radius: 0;
  }

  .page-home .toc-link:hover {
    border-color: transparent;
    border-left-color: var(--c-line-2);
  }

  .page-home .toc-link.is-active {
    background: transparent;
    border-color: transparent;
    border-left-color: var(--c-celadon);
    color: var(--c-celadon);
  }
}

/* 窄屏兜底 */
@media (max-width: 420px) {
  .page-home .hero-title {
    font-size: 25px;
  }

  .page-home .coverage-list li {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .hero-path,
  .page-home .archive-grid .archive-card,
  .page-home .channel-card,
  .page-home .next-card,
  .page-home .toc-link,
  .page-home .btn,
  .page-home .home-legal a {
    transition: none !important;
    transform: none !important;
  }

  .page-home .panel-body {
    animation: none;
  }
}