.page-home {
  --home-gap: clamp(1rem, 2.5vw, 1.75rem);
  --home-line: rgba(47, 70, 91, 0.62);
  --home-line-soft: rgba(47, 70, 91, 0.38);
  --home-paper-line: rgba(8, 24, 38, 0.16);
  background: var(--ink-900);
  color: var(--ice);
}

.page-home img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏封面 ---------- */
.page-home .hero {
  position: relative;
  margin-top: calc(var(--header-h) * -1);
  padding-top: calc(var(--header-h) + clamp(1.4rem, 4vw, 2.4rem));
  padding-bottom: clamp(2rem, 5vw, 3.4rem);
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(90% 70% at 88% 6%, rgba(56, 214, 196, 0.16), transparent 62%),
    radial-gradient(70% 60% at 4% 100%, rgba(242, 169, 59, 0.1), transparent 66%),
    var(--ink-900);
}

.page-home .hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(47, 70, 91, 0.45) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(47, 70, 91, 0.45) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 78%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 78%);
  opacity: 0.55;
  pointer-events: none;
}

.page-home .hero-crumbs {
  margin-bottom: clamp(1.4rem, 3vw, 2.2rem);
}

.page-home .hero-grid {
  display: grid;
  gap: clamp(1.8rem, 4vw, 3rem);
  grid-template-columns: 1fr;
  align-items: start;
}

.page-home .hero-title {
  margin: 0.5rem 0 0;
  font-size: clamp(2.2rem, 8vw, 4.4rem);
  font-weight: 300;
  line-height: 1.06;
  letter-spacing: -0.035em;
  color: var(--ice);
}

.page-home .hero-lead {
  margin: clamp(1rem, 2vw, 1.4rem) 0 0;
  max-width: 44ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-home .search-entry {
  margin-top: clamp(1.5rem, 3vw, 2.1rem);
  max-width: 34rem;
  padding: clamp(1rem, 2vw, 1.3rem);
  border: 1px solid var(--home-line);
  background: linear-gradient(160deg, rgba(16, 40, 61, 0.92), rgba(8, 24, 38, 0.72));
}

.page-home .search-label {
  display: block;
  margin-bottom: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-home .search-field {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.8rem;
  border: 1px solid var(--home-line);
  background: rgba(8, 24, 38, 0.86);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-home .search-field:focus-within {
  border-color: var(--cyan);
  box-shadow: 0 0 0 1px var(--cyan), 0 0 22px rgba(56, 214, 196, 0.32);
}

.page-home .search-icon {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  color: var(--cyan);
}

.page-home .search-input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 0.4rem 0;
  border: 0;
  background: transparent;
  color: var(--ice);
  font-family: var(--font-sans);
  font-size: 0.95rem;
}

.page-home .search-input::placeholder {
  color: rgba(183, 216, 212, 0.55);
}

.page-home .search-input:focus {
  outline: none;
}

.page-home .search-hint {
  margin: 0.9rem 0 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sage);
}

.page-home .search-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .search-chips a {
  display: inline-block;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--home-line);
  color: var(--mist);
  font-size: 0.78rem;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-home .search-chips a:hover,
.page-home .search-chips a:focus-visible {
  border-color: var(--amber);
  color: var(--amber);
  background: rgba(242, 169, 59, 0.08);
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: clamp(1.4rem, 3vw, 1.9rem);
}

.page-home .hero-note {
  margin: 0.85rem 0 0;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--sage);
}

.page-home .hero-media {
  border: 1px solid var(--home-line);
}

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

.page-home .hero-index li + li {
  border-top: 1px solid var(--home-line-soft);
}

.page-home .hero-index a {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  column-gap: 0.7rem;
  padding: 0.7rem 0.3rem;
  color: var(--ice);
  text-decoration: none;
  transition: background 0.22s var(--ease);
}

.page-home .hero-index a:hover,
.page-home .hero-index a:focus-visible {
  background: rgba(56, 214, 196, 0.07);
}

.page-home .hi-num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-home .hi-name {
  font-size: 0.96rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.page-home .hi-desc {
  grid-column: 2;
  margin-top: 0.15rem;
  font-size: 0.77rem;
  line-height: 1.6;
  color: var(--mist);
}

.page-home .hero-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem 1.6rem;
  margin: clamp(2rem, 4vw, 3rem) 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--home-line);
}

.page-home .hero-strip > div {
  display: flex;
  flex-direction: column;
}

.page-home .hero-strip dt {
  order: 2;
  margin-top: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sage);
}

.page-home .hero-strip dd {
  order: 1;
  margin: 0;
  font-size: clamp(1.15rem, 3vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ice);
}

/* ---------- 章节骨架 ---------- */
.page-home .sec {
  position: relative;
  padding: clamp(2.6rem, 6vw, 4.6rem) 0;
}

.page-home .sec + .sec {
  border-top: 1px solid var(--home-line-soft);
}

.page-home .sec-head {
  max-width: 58ch;
}

.page-home .sec-head .lead {
  margin-top: 0.7rem;
  color: var(--mist);
}

.page-home .sec-tight {
  padding: clamp(2rem, 4vw, 3.2rem) 0 clamp(2.6rem, 5vw, 4rem);
}

/* ---------- 快捷索引 ---------- */
.page-home .index-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(1.6rem, 3vw, 2.4rem);
  border: 1px solid var(--home-line);
  background: var(--home-line);
}

.page-home .index-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  min-height: 12.5rem;
  padding: clamp(1.1rem, 2vw, 1.6rem);
  background: var(--ink-850);
  color: var(--ice);
  text-decoration: none;
  transition: background 0.25s var(--ease);
}

.page-home .index-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.35s var(--ease);
}

.page-home .index-card:hover,
.page-home .index-card:focus-visible {
  background: var(--ink-800);
}

.page-home .index-card:hover::after,
.page-home .index-card:focus-visible::after {
  transform: scaleX(1);
}

.page-home .ic-num {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--amber);
}

.page-home .ic-title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-home .ic-text {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-home .ic-foot {
  margin-top: auto;
  padding-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sage);
}

/* ---------- 批次提示 ---------- */
.page-home .batch-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 3rem);
  align-items: start;
}

.page-home .batch-copy .tag {
  display: inline-block;
}

.page-home .batch-list {
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--home-line-soft);
}

.page-home .batch-list li {
  display: grid;
  grid-template-columns: 5.6rem minmax(0, 1fr);
  gap: 0.8rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--home-line-soft);
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-home .bl-key {
  padding-top: 0.12rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-home .batch-note {
  margin: 1rem 0 0;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--sage);
}

.page-home .batch-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.3rem;
}

.page-home .batch-media {
  border: 1px solid var(--home-line);
}

/* ---------- 帮助中心清单 ---------- */
.page-home .help-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 3rem);
  align-items: start;
}

.page-home .help-list {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--home-line);
}

.page-home .help-list li {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  gap: 0.9rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--home-line-soft);
}

.page-home .hl-num {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-home .hl-name {
  margin: 0 0 0.22rem;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ice);
}

.page-home .help-list p {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-home .help-note {
  margin: 1.1rem 0 1.3rem;
  padding-left: 0.9rem;
  border-left: 2px solid var(--sage);
  font-size: 0.82rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-home .help-media {
  border: 1px solid var(--home-line);
}

/* ---------- 双栏路径 ---------- */
.page-home .split-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(1.6rem, 3vw, 2.4rem);
  border: 1px solid var(--home-line);
  background: var(--home-line);
}

.page-home .split-col {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: clamp(1.3rem, 3vw, 2.2rem);
}

.page-home .split-col--dark {
  background: var(--ink-850);
}

.page-home .split-col--paper {
  background: var(--paper);
  color: var(--ink-900);
}

.page-home .split-col .tag {
  align-self: flex-start;
}

.page-home .split-title {
  margin: 0;
  font-size: clamp(1.25rem, 2.4vw, 1.6rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.015em;
}

.page-home .split-text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
}

.page-home .split-col--dark .split-title {
  color: var(--ice);
}

.page-home .split-col--dark .split-text {
  color: var(--mist);
}

.page-home .split-col--paper .split-title {
  color: var(--ink-900);
}

.page-home .split-col--paper .split-text {
  color: var(--ink-800);
}

.page-home .split-col .btn {
  align-self: flex-start;
  margin-top: 0.5rem;
}

/* 编号轨道 */
.page-home .track {
  margin: 0.4rem 0 0;
  padding: 0;
  list-style: none;
}

.page-home .track-item {
  position: relative;
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  column-gap: 0.9rem;
  padding-bottom: 1.1rem;
}

.page-home .track-item::before {
  content: "";
  position: absolute;
  top: 0.2rem;
  bottom: 0;
  left: 2.25rem;
  width: 1px;
  background: var(--home-line);
}

.page-home .track-item:last-child::before {
  display: none;
}

.page-home .track-num {
  padding-right: 0.55rem;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1.45;
  text-align: right;
  color: var(--amber);
}

.page-home .track-item h4 {
  margin: 0 0 0.15rem;
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--ice);
}

.page-home .track-item p {
  margin: 0;
  font-size: 0.83rem;
  line-height: 1.65;
  color: var(--mist);
}

/* 入门四节 */
.page-home .guide-list {
  margin: 0.4rem 0 0;
  padding: 0;
  list-style: none;
}

.page-home .guide-list li {
  position: relative;
  padding: 0.85rem 0 0.85rem 2.8rem;
  border-bottom: 1px solid var(--home-paper-line);
}

.page-home .guide-list li:last-child {
  border-bottom: 0;
}

.page-home .g-num {
  position: absolute;
  top: 0.9rem;
  left: 0;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  color: var(--amber-deep);
}

.page-home .guide-list h4 {
  margin: 0 0 0.18rem;
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--ink-900);
}

.page-home .guide-list p {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.68;
  color: var(--ink-800);
}

/* ---------- 版本与收藏 ---------- */
.page-home .version-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 3rem);
  align-items: center;
}

.page-home .version-media {
  border: 1px solid var(--home-line);
}

.page-home .version-copy .tag {
  display: inline-block;
}

.page-home .version-copy .lead {
  margin-top: 0.8rem;
  color: var(--mist);
}

.page-home .version-list {
  display: grid;
  gap: 0.7rem;
  margin: 1.2rem 0 0;
  padding: 0;
  list-style: none;
}

.page-home .version-list li {
  position: relative;
  padding-left: 1.4rem;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-home .version-list li::before {
  content: "";
  position: absolute;
  top: 0.68rem;
  left: 0;
  width: 0.72rem;
  height: 1px;
  background: var(--amber);
}

.page-home .version-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.4rem;
}

/* ---------- 更多入口 ---------- */
.page-home .more-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.2rem, 3vw, 2rem);
  align-items: start;
}

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

.page-home .more-list a {
  display: grid;
  grid-template-columns: 6.6rem minmax(0, 1fr);
  gap: 0.8rem;
  align-items: baseline;
  padding: 0.9rem 0.2rem;
  border-bottom: 1px solid var(--home-line-soft);
  color: var(--ice);
  text-decoration: none;
  transition: background 0.2s var(--ease);
}

.page-home .more-list a:hover,
.page-home .more-list a:focus-visible {
  background: rgba(242, 169, 59, 0.07);
}

.page-home .more-list span {
  font-size: 0.96rem;
  font-weight: 700;
}

.page-home .more-list a:hover span {
  color: var(--amber);
}

.page-home .more-list em {
  font-style: normal;
  font-size: 0.83rem;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-home .index-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-home .hero-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-home .version-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

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

  .page-home .more-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  }
}

@media (min-width: 960px) {
  .page-home .hero-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-home .hero-visual {
    padding-top: 0.4rem;
  }

  .page-home .batch-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-home .help-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  }
}

@media (min-width: 1040px) {
  .page-home .index-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .page-home .hero-lead {
    font-size: 1.06rem;
  }

  .page-home .batch-grid {
    grid-template-columns: minmax(0, 6.5fr) minmax(0, 5.5fr);
    gap: clamp(2.5rem, 5vw, 4rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .index-card::after,
  .page-home .search-field,
  .page-home .search-chips a,
  .page-home .hero-index a,
  .page-home .more-list a {
    transition: none;
  }

  .page-home .index-card:hover::after,
  .page-home .index-card:focus-visible::after {
    transform: scaleX(1);
  }
}