.page-home {
  --home-border: 2px solid var(--rail-line);
  --home-shadow: 8px 8px 0 rgba(6, 10, 22, .9);
  --home-shadow-sm: 5px 5px 0 rgba(6, 10, 22, .85);
}

/* ---------- 面包屑 ---------- */
.page-home .home-crumb {
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--muted);
  margin: 0 0 clamp(20px, 3vw, 32px);
  text-transform: uppercase;
}

/* ---------- 首屏 ---------- */
.page-home .home-cover {
  position: relative;
  padding: clamp(24px, 4vw, 56px) 0 clamp(40px, 6vw, 84px);
}

.page-home .home-cover__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-home .home-cover__lead {
  min-width: 0;
}

.page-home .home-cover__title {
  font-family: var(--narrow);
  font-weight: 800;
  font-size: clamp(32px, 5.6vw, 68px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--text);
  margin: 12px 0 20px;
}

.page-home .home-cover__intro {
  max-width: 44ch;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
  margin: 0 0 26px;
}

.page-home .home-cover__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.page-home .home-cover__hint {
  color: var(--orange-soft);
  font-size: 13px;
  line-height: 1.7;
  margin: 0;
}

.page-home .home-cover__matrix {
  position: relative;
  min-width: 0;
}

.page-home .home-cover__vlabel {
  display: none;
}

/* 七组缩略矩阵 */
.page-home .home-matrix {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-home .home-matrix__cell {
  min-width: 0;
}

.page-home .home-matrix__cell > a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  height: 100%;
  padding: 12px 12px 14px;
  border: var(--home-border);
  background: linear-gradient(165deg, var(--ink-2) 0%, var(--ink) 92%);
  box-shadow: var(--home-shadow-sm);
  color: var(--text);
  text-decoration: none;
  transition: transform var(--t-mid) var(--ease),
              border-color var(--t-mid) var(--ease),
              box-shadow var(--t-mid) var(--ease);
}

.page-home .home-matrix__cell > a:hover,
.page-home .home-matrix__cell > a:focus-visible {
  transform: translateY(-2px);
  border-color: var(--cyan);
  box-shadow: 5px 5px 0 rgba(41, 242, 220, .32);
}

.page-home .home-matrix__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-home .home-matrix__name {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.4;
}

.page-home .home-matrix__desc {
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

.page-home .home-matrix__cell--entry > a {
  background: linear-gradient(165deg, var(--blue) 0%, #142B63 100%);
  border-color: var(--blue-soft);
}

.page-home .home-matrix__cell--entry .home-matrix__num {
  color: var(--orange-soft);
}

.page-home .home-matrix__cell--entry .home-matrix__desc {
  color: rgba(233, 238, 251, .82);
}

/* 首屏条形图 */
.page-home .home-cover__shot {
  margin: 0;
}

.page-home .home-cover__shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

/* ---------- 进入路径 ---------- */
.page-home .home-entry {
  border-top: var(--home-border);
}

.page-home .home-entry h2,
.page-home .home-groups h2,
.page-home .home-downloads h2,
.page-home .home-collect h2,
.page-home .home-version h2,
.page-home .home-help h2 {
  font-family: var(--narrow);
  font-weight: 800;
  letter-spacing: -.015em;
  line-height: 1.15;
  color: var(--text);
  font-size: clamp(24px, 3.4vw, 40px);
  margin: 8px 0 22px;
}

.page-home .home-steps {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-home .home-steps__item {
  border-left: 2px solid var(--rail-line);
  padding: 4px 0 4px 18px;
  transition: border-color var(--t-mid) var(--ease);
}

.page-home .home-steps__item:hover {
  border-left-color: var(--cyan);
}

.page-home .home-steps__num {
  display: block;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
  margin-bottom: 6px;
}

.page-home .home-steps__item strong {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.page-home .home-steps__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-home .home-entry__figure {
  margin: 0;
}

/* ---------- 七组索引 ---------- */
.page-home .home-groups {
  border-top: var(--home-border);
}

.page-home .home-groups__head {
  max-width: 720px;
  margin-bottom: clamp(24px, 3vw, 40px);
}

.page-home .home-groups__lead {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
  margin: 0;
}

.page-home .home-groups__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .home-group {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 6px 18px;
  padding: 20px 4px;
  border-top: 2px solid var(--rail-line);
  transition: background-color var(--t-mid) var(--ease);
}

.page-home .home-group:last-child {
  border-bottom: 2px solid var(--rail-line);
}

.page-home .home-group:hover {
  background: linear-gradient(90deg, rgba(47, 107, 255, .12) 0%, rgba(6, 10, 22, 0) 60%);
}

.page-home .home-group__num {
  font-size: clamp(20px, 3vw, 30px);
  letter-spacing: .04em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  transition: color var(--t-mid) var(--ease);
}

.page-home .home-group:hover .home-group__num,
.page-home .home-group:focus-within .home-group__num {
  color: var(--cyan);
}

.page-home .home-group__body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 6px;
}

.page-home .home-group__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 62ch;
}

.page-home .home-group__link {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--blue-soft);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-home .home-group__link:hover,
.page-home .home-group__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 资料下载 ---------- */
.page-home .home-downloads {
  --home-shadow: 8px 8px 0 rgba(6, 10, 22, .9);
}

.page-home .home-downloads__body {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-bottom: clamp(24px, 3vw, 38px);
}

.page-home .home-downloads__lead {
  color: rgba(233, 238, 251, .82);
  font-size: 16px;
  line-height: 1.9;
  margin: 0;
  max-width: 60ch;
}

.page-home .home-downloads__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 20px;
  margin: 0;
  padding: 0;
}

.page-home .home-downloads__meta dt {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan);
  margin-bottom: 6px;
}

.page-home .home-downloads__meta dd {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.page-home .home-downloads__figure {
  margin: 0 0 26px;
}

.page-home .home-downloads__cta {
  display: inline-flex;
}

/* ---------- 收藏与回访 ---------- */
.page-home .home-collect {
  border-top: var(--home-border);
}

.page-home .home-collect__lead {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
  margin: 0 0 22px;
}

.page-home .home-collect__list {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-home .home-collect__list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
}

.page-home .home-collect__dot {
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: 9px;
  background: var(--orange);
  box-shadow: 0 0 0 2px rgba(255, 139, 61, .28);
}

.page-home .home-collect__figure {
  margin: 0;
}

.page-home .home-collect__btn {
  display: inline-flex;
}

/* ---------- 版本时间线 ---------- */
.page-home .home-version {
  border-top: var(--home-border);
}

.page-home .home-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
  border-left: 2px solid var(--rail-line);
}

.page-home .home-timeline > li {
  position: relative;
}

.page-home .home-timeline > li::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 24px;
  width: 12px;
  height: 12px;
  background: var(--ink);
  border: 2px solid var(--rail-line-2);
  border-radius: 50%;
  transition: background-color var(--t-mid) var(--ease), border-color var(--t-mid) var(--ease);
}

.page-home .home-timeline details {
  border-bottom: 1px solid var(--rail-line);
}

.page-home .home-timeline > li:last-child details {
  border-bottom: none;
}

.page-home .home-timeline summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
  color: var(--text);
}

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

.page-home .home-timeline summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--mono);
  font-size: 18px;
  color: var(--cyan);
  line-height: 1;
  transition: transform var(--t-mid) var(--ease);
}

.page-home .home-timeline details[open] summary::after {
  transform: rotate(45deg);
}

.page-home .home-timeline__tag {
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-home .home-timeline__label {
  font-size: 16px;
  font-weight: 700;
}

.page-home .home-timeline__text {
  margin: 0 4px 20px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 68ch;
}

/* ---------- 快速答疑 ---------- */
.page-home .home-help {
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-home .home-help__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-bottom: 26px;
}

.page-home .home-help__card {
  display: block;
  padding: 20px 18px 22px;
  border: 2px solid var(--rail-line-2);
  background: rgba(6, 10, 22, .55);
  color: var(--text);
  text-decoration: none;
  transition: transform var(--t-mid) var(--ease),
              border-color var(--t-mid) var(--ease),
              background-color var(--t-mid) var(--ease);
}

.page-home .home-help__card:hover,
.page-home .home-help__card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--cyan);
  background: rgba(6, 10, 22, .82);
}

.page-home .home-help__mark {
  display: block;
  font-family: var(--mono);
  font-size: 22px;
  line-height: 1;
  color: var(--cyan);
  margin-bottom: 14px;
}

.page-home .home-help__card h3 {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 8px;
}

.page-home .home-help__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(233, 238, 251, .74);
}

.page-home .home-help__foot {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(233, 238, 251, .78);
}

.page-home .home-help__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(41, 242, 220, .5);
  transition: border-color var(--t-fast) var(--ease);
}

.page-home .home-help__foot a:hover,
.page-home .home-help__foot a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 窄屏适配 ---------- */
@media (max-width: 639px) {
  .page-home .home-group {
    grid-template-columns: auto minmax(0, 1fr);
    grid-template-areas:
      "num body"
      "num link";
  }

  .page-home .home-group__num {
    grid-area: num;
  }

  .page-home .home-group__body {
    grid-area: body;
  }

  .page-home .home-group__link {
    grid-area: link;
    justify-self: start;
    margin-top: 6px;
  }

  .page-home .home-cover__shot img {
    aspect-ratio: 4 / 3;
  }

  .page-home .home-timeline {
    padding-left: 16px;
  }

  .page-home .home-timeline > li::before {
    left: -23px;
  }
}

/* ---------- 桌面端栅格 ---------- */
@media (min-width: 640px) {
  .page-home .home-help__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .home-downloads__body {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: end;
  }
}

@media (min-width: 900px) {
  .page-home .home-cover__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    grid-template-areas:
      "lead matrix"
      "shot shot";
    align-items: start;
  }

  .page-home .home-cover__lead {
    grid-area: lead;
  }

  .page-home .home-cover__matrix {
    grid-area: matrix;
  }

  .page-home .home-cover__shot {
    grid-area: shot;
    margin-top: clamp(12px, 2vw, 24px);
  }

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

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

@media (min-width: 1100px) {
  .page-home .home-matrix__cell > a {
    padding: 16px 14px 18px;
  }

  .page-home .home-matrix__name {
    font-size: 15px;
  }
}

@media (min-width: 1440px) {
  .page-home .home-cover__vlabel {
    display: block;
    position: absolute;
    right: -16px;
    top: 72px;
    writing-mode: vertical-rl;
    font-size: 11px;
    letter-spacing: .3em;
    color: var(--rail-line-2);
  }
}