.page-home {
  --home-gutter: 20px;
  --home-radius: 2px;
}

/* ---------- 首屏 ---------- */
.page-home .home-hero {
  position: relative;
  padding: 84px 0 56px;
  overflow: hidden;
  background:
    radial-gradient(1100px 620px at 76% 18%, rgba(53, 224, 208, 0.16), transparent 64%),
    radial-gradient(760px 520px at 8% 88%, rgba(255, 138, 61, 0.12), transparent 62%),
    var(--ink);
  border-bottom: 1px solid var(--line);
}

.page-home .home-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.4;
  background-image:
    linear-gradient(to right, rgba(27, 43, 85, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27, 43, 85, 0.45) 1px, transparent 1px);
  background-size: 68px 68px;
}

.page-home .home-hero .shell {
  position: relative;
  z-index: 1;
}

.page-home .hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

.page-home .hero-rail {
  display: none;
}

.page-home .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: sticky;
  top: calc(var(--header-h-slim) + 22px);
}

.page-home .rail-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 10px;
  border-left: 1px solid var(--line);
  transition: border-color var(--t-fast) var(--ease);
}

.page-home .rail-list li:hover {
  border-color: var(--cyan);
}

.page-home .rail-idx {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-home .rail-label {
  font-size: 12px;
  line-height: 1.4;
  color: var(--muted);
}

.page-home .hero-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

.page-home .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 16px;
}

.page-home .breadcrumb [aria-current="page"] {
  color: var(--cyan);
}

.page-home .hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 6vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--white);
  margin: 0 0 20px;
}

.page-home .hero-lede {
  font-size: 17px;
  line-height: 1.75;
  color: var(--muted);
  margin: 0 0 26px;
  max-width: 46ch;
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.page-home .hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-home .hero-stat {
  padding: 14px 12px 16px 0;
  border-right: 1px solid var(--line);
}

.page-home .hero-stat:last-child {
  border-right: 0;
  padding-left: 12px;
}

.page-home .hero-stat:not(:first-child) {
  padding-left: 12px;
}

.page-home .hero-stat dt {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 6px;
}

.page-home .hero-stat dd {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--cyan);
  margin: 0;
  font-variant-numeric: tabular-nums;
}

/* 章节预览 */
.page-home .hero-preview {
  position: relative;
  border: 1px solid var(--line);
  background: rgba(16, 31, 68, 0.86);
  padding: 16px;
}

.page-home .preview-media {
  margin: 0 0 16px;
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-home .preview-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.9);
}

.page-home .preview-label {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
  margin: 0 0 12px;
}

.page-home .preview-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-home .preview-card {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 13px 2px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: background var(--t-fast) var(--ease), padding-left var(--t-fast) var(--ease);
}

.page-home .preview-card:hover,
.page-home .preview-card:focus-visible {
  background: rgba(53, 224, 208, 0.08);
  padding-left: 10px;
}

.page-home .preview-idx {
  font-size: 12px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  transition: color var(--t-fast) var(--ease);
}

.page-home .preview-card:hover .preview-idx,
.page-home .preview-card:focus-visible .preview-idx {
  color: var(--cyan);
}

.page-home .preview-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.page-home .preview-title-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  line-height: 1.4;
}

.page-home .preview-desc {
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 三步 ---------- */
.page-home .home-steps {
  padding: 64px 0;
  background: var(--ink);
}

.page-home .steps-lede,
.page-home .tags-lede,
.page-home .audience-lede,
.page-home .flank-lede,
.page-home .updates-lede,
.page-home .help-lede {
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
  margin: 18px 0 0;
  max-width: 62ch;
}

.page-home .path-list {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-home .path-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
  opacity: 1;
  transition: background var(--t-mid) var(--ease);
}

.page-home .path-step:hover {
  background: rgba(53, 224, 208, 0.05);
}

.page-home .path-step-idx {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
  padding-top: 3px;
}

.page-home .path-step-body h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--white);
  margin: 0 0 10px;
  line-height: 1.35;
}

.page-home .path-step-body p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
  margin: 0 0 12px;
  max-width: 58ch;
}

.page-home .home-steps .link {
  font-size: 14px;
}

.page-home .steps-media {
  margin: 34px 0 0;
  border: 1px solid var(--line);
  overflow: hidden;
}

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

/* ---------- 标签 ---------- */
.page-home .home-tags {
  padding: 64px 0;
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-home .tags-grid {
  row-gap: 34px;
}

.page-home .tag-grid {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.page-home .tag-card {
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-height: 76px;
  padding: 13px 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--home-radius);
  background: rgba(10, 22, 51, 0.62);
  text-decoration: none;
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.page-home .tag-card:hover,
.page-home .tag-card:focus-visible {
  border-color: var(--cyan);
  background: rgba(53, 224, 208, 0.09);
  transform: translateY(-2px);
}

.page-home .tag-idx {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  transition: color var(--t-fast) var(--ease);
}

.page-home .tag-card:hover .tag-idx,
.page-home .tag-card:focus-visible .tag-idx {
  color: var(--cyan);
}

.page-home .tag-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  line-height: 1.4;
}

.page-home .tags-side {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-home .tags-media {
  margin: 26px 0 0;
  border: 1px solid var(--line);
  overflow: hidden;
}

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

.page-home .tags-note {
  margin: 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
}

.page-home .tags-note-title {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange);
  margin: 0 0 8px;
}

.page-home .tags-note p:last-child {
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
  margin: 0;
}

/* ---------- 访客三类 ---------- */
.page-home .home-audience {
  padding: 64px 0;
  background: var(--ink);
}

.page-home .visitor-list {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-home .visitor-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--home-radius);
  background: var(--ink-2);
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-home .visitor-card:hover {
  border-color: var(--cyan);
  background: rgba(16, 31, 68, 0.92);
}

.page-home .visitor-card--accent {
  border-top: 2px solid var(--cyan);
}

.page-home .visitor-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--cyan);
}

.page-home .visitor-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--white);
  margin: 0;
  line-height: 1.35;
}

.page-home .visitor-card > p {
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
  margin: 0;
}

.page-home .visitor-facts {
  margin: 0;
  padding: 12px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 8px;
}

.page-home .visitor-facts > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.page-home .visitor-facts dt {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-home .visitor-facts dd {
  font-size: 13px;
  color: var(--white);
  margin: 0;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.page-home .visitor-card .btn {
  align-self: flex-start;
  margin-top: 4px;
}

/* ---------- 侧翼工具 ---------- */
.page-home .home-flank {
  padding: 64px 0;
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-home .flank-grid {
  row-gap: 34px;
}

.page-home .flank-points {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-home .flank-points li {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-home .flank-point-idx {
  font-size: 12px;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
  padding-top: 3px;
}

.page-home .flank-points p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
  margin: 0;
}

.page-home .flank-points strong {
  color: var(--white);
  font-weight: 600;
}

.page-home .flank-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 26px;
}

.page-home .favorite-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: var(--home-radius);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 14px;
  cursor: pointer;
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-home .favorite-btn:hover,
.page-home .favorite-btn:focus-visible {
  border-color: var(--amber);
  color: var(--amber);
}

.page-home .favorite-btn[aria-pressed="true"] {
  border-color: var(--amber);
  background: rgba(255, 196, 107, 0.12);
  color: var(--amber);
}

.page-home .favorite-glyph {
  font-size: 14px;
  line-height: 1;
}

.page-home .favorite-count {
  font-size: 12px;
  padding: 1px 6px;
  border: 1px solid currentColor;
  font-variant-numeric: tabular-nums;
}

.page-home .flank-side {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-home .flank-media {
  margin: 26px 0 0;
  border: 1px solid var(--line);
  overflow: hidden;
}

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

.page-home .flank-caption {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0;
}

/* ---------- 最近更新 ---------- */
.page-home .home-updates {
  padding: 64px 0;
  background: var(--ink);
}

.page-home .home-update-list {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-home .home-update-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  transition: background var(--t-fast) var(--ease);
}

.page-home .home-update-item:hover {
  background: rgba(53, 224, 208, 0.04);
}

.page-home .home-update-time {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-home .home-update-tag {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-home .home-update-text {
  font-size: 15px;
  line-height: 1.72;
  color: var(--white);
  margin: 2px 0 0;
  max-width: 66ch;
}

/* ---------- 人工通道 ---------- */
.page-home .home-help {
  padding: 64px 0 76px;
  background:
    radial-gradient(820px 460px at 86% 8%, rgba(255, 138, 61, 0.13), transparent 66%),
    var(--ink-2);
  border-top: 1px solid var(--line);
}

.page-home .help-grid {
  row-gap: 34px;
}

.page-home .help-channels {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-home .help-channel {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-home .help-channel-label {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-home .help-channel-value {
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  color: var(--cyan);
  text-decoration: none;
  word-break: break-word;
  transition: color var(--t-fast) var(--ease);
}

.page-home .help-channel-value:hover,
.page-home .help-channel-value:focus-visible {
  color: var(--cyan-soft);
  text-decoration: underline;
}

.page-home .help-channel-note {
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

.page-home .help-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-home .help-side {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-home .help-card {
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  border-radius: var(--home-radius);
  background: rgba(10, 22, 51, 0.66);
}

.page-home .help-card--trust {
  border-left-color: var(--amber);
}

.page-home .help-card-title {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 10px;
}

.page-home .help-card-address {
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.5;
  color: var(--white);
  margin: 0 0 8px;
}

.page-home .help-card-note {
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
  margin: 0;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-home .home-hero {
    padding: 96px 0 68px;
  }

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

  .page-home .home-update-item {
    grid-template-columns: 96px 96px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }

  .page-home .home-update-text {
    margin-top: 0;
  }

  .page-home .visitor-list {
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-home {
    --home-gutter: 24px;
  }

  .page-home .hero-grid {
    grid-template-columns: var(--rail) minmax(0, 1fr);
    gap: 32px;
  }

  .page-home .hero-rail {
    display: block;
    border-right: 1px solid var(--line);
    padding-right: 14px;
  }

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

  .page-home .home-tags,
  .page-home .home-flank,
  .page-home .home-steps,
  .page-home .home-audience,
  .page-home .home-updates,
  .page-home .home-help {
    padding: 80px 0;
  }
}

@media (min-width: 1080px) {
  .page-home .hero-body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 46px;
    align-items: start;
  }

  .page-home .tag-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .path-step {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 24px;
    padding: 28px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .tag-card,
  .page-home .preview-card,
  .page-home .visitor-card,
  .page-home .favorite-btn,
  .page-home .path-step,
  .page-home .home-update-item {
    transition: none;
  }

  .page-home .tag-card:hover,
  .page-home .tag-card:focus-visible {
    transform: none;
  }
}