.page-home {
  --home-rowgap: clamp(14px, 2vw, 22px);
  background: var(--deep);
  color: var(--mist);
}

.page-home a {
  color: inherit;
}

/* ---------- 首屏封面 ---------- */
.page-home .cover {
  position: relative;
  overflow: hidden;
  padding: clamp(32px, 7vw, 84px) 0 clamp(26px, 4vw, 48px);
  background: var(--deep);
}

.page-home .cover__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-home .cover__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
  display: block;
}

.page-home .cover::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(180deg, rgba(6, 24, 46, 0.5) 0%, rgba(6, 24, 46, 0.88) 52%, var(--deep) 100%);
}

.page-home .cover > .wrap {
  position: relative;
  z-index: 1;
}

.page-home .cover__inner {
  display: grid;
  gap: 18px;
}

.page-home .cover__crumb {
  margin-bottom: 14px;
  font-size: var(--fs-micro);
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-home .cover__kicker {
  color: var(--cyan);
  margin-bottom: 14px;
}

.page-home .cover__title {
  color: var(--paper);
  line-height: var(--lh-tight);
  letter-spacing: -0.015em;
  max-width: 14em;
}

.page-home .cover__lead {
  margin-top: 20px;
  max-width: 34em;
  color: var(--mist);
}

.page-home .cover__vert {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  opacity: 0.8;
  border-left: 2px solid var(--line-strong);
  padding-left: 10px;
}

.page-home .cover__foot {
  margin-top: clamp(36px, 6vw, 76px);
  padding-top: clamp(18px, 2.6vw, 28px);
  border-top: 1px solid var(--line);
  display: grid;
  gap: 26px;
}

.page-home .routes {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px 24px;
}

.page-home .routes a {
  display: inline-block;
  font-size: var(--fs-small);
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 120ms ease, border-color 120ms ease;
}

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

.page-home .spanchips {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-home .spanchips a {
  display: inline-block;
  padding: 6px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.1em;
  color: var(--mist);
  text-decoration: none;
  transition: border-color 120ms ease, color 120ms ease;
}

.page-home .spanchips a:hover,
.page-home .spanchips a:focus-visible {
  border-color: var(--amber);
  color: var(--paper);
}

.page-home .cover__span .note {
  margin-top: 12px;
  color: var(--muted);
  font-size: var(--fs-micro);
  max-width: 34em;
}

/* ---------- 章节骨架 ---------- */
.page-home .section {
  padding: clamp(44px, 7vw, 92px) 0;
}

.page-home .section--tight {
  padding-top: clamp(30px, 5vw, 56px);
}

.page-home .section__head {
  display: grid;
  gap: 6px;
  margin-bottom: clamp(22px, 3.2vw, 40px);
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.page-home .section__num {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-home .section__note {
  color: var(--muted);
  font-size: var(--fs-small);
  margin: 0;
}

.page-home .note {
  color: var(--muted);
  font-size: var(--fs-small);
}

.page-home .note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

/* ---------- 01 模块地图 ---------- */
.page-home .mapgrid {
  display: grid;
  gap: 26px;
}

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

.page-home .maprow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  padding: 17px 2px;
  border-bottom: 1px solid var(--line);
  transition: background-color 120ms ease;
}

.page-home .maprow:hover {
  background: var(--glass-soft);
}

.page-home .maprow__no {
  flex: 0 0 auto;
  width: 44px;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-home .maprow__main {
  flex: 1 1 220px;
  min-width: 0;
}

.page-home .maprow__name {
  margin: 0;
  font-size: var(--fs-h3);
  color: var(--paper);
}

.page-home .maprow__desc {
  margin: 5px 0 0;
  font-size: var(--fs-small);
  color: var(--muted);
  max-width: 34em;
}

.page-home .tag {
  flex: 0 0 auto;
  font-size: var(--fs-micro);
  letter-spacing: 0.14em;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  white-space: nowrap;
}

.page-home .tag--item {
  color: var(--ridge);
  border-color: rgba(127, 163, 184, 0.42);
}

.page-home .tag--rebate {
  color: var(--cyan);
  border-color: var(--line-strong);
  background: var(--glass-soft);
}

.page-home .tag--points {
  color: var(--violet);
  border-color: rgba(139, 92, 246, 0.45);
  background: var(--violet-soft);
}

.page-home .maprow__link {
  flex: 0 0 auto;
  margin-left: auto;
  font-size: var(--fs-small);
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  white-space: nowrap;
}

.page-home .mapaside {
  display: grid;
  gap: 12px;
}

.page-home .mapaside__img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.page-home .mapaside__cap {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--line-strong);
  font-size: var(--fs-small);
  color: var(--muted);
}

/* ---------- 02 数据项量级 ---------- */
.page-home .ringgrid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

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

.page-home .ring svg {
  display: block;
  width: 100%;
  max-width: 320px;
  height: auto;
  margin: 0 auto;
}

.page-home .ring__num {
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 600;
  fill: var(--paper);
}

.page-home .ring__cap {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  fill: var(--muted);
}

.page-home .ring__legend {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 18px;
  font-size: var(--fs-small);
  color: var(--muted);
}

.page-home .dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  margin-right: 6px;
}

.page-home .dot--item { background: var(--ridge); }
.page-home .dot--rebate { background: var(--cyan); }
.page-home .dot--points { background: var(--violet); }

.page-home .statsplit {
  display: grid;
  gap: 16px;
}

.page-home .kn {
  display: grid;
  gap: 2px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-home .kn__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2rem, 4.4vw, 3.1rem);
  line-height: 1;
  color: var(--paper);
}

.page-home .kn__unit {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-home .kn__label {
  font-size: var(--fs-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-home .itemrows {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-home .itemrow {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 12px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line);
}

.page-home .itemrow__code {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-home .itemrow__name {
  margin: 0;
  font-size: var(--fs-h3);
  color: var(--paper);
}

.page-home .itemrow__dim {
  grid-column: 2;
  margin: 0;
  font-size: var(--fs-small);
  color: var(--muted);
}

.page-home .ringside .note {
  margin-top: 18px;
  max-width: 40em;
}

/* ---------- 03 账目分离 ---------- */
.page-home .ledgergrid {
  display: grid;
  gap: var(--home-rowgap);
}

.page-home .ledgercard {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
}

.page-home .ledgercard--rebate { border-top: 3px solid var(--cyan); }
.page-home .ledgercard--points { border-top: 3px solid var(--violet); }

.page-home .ledgercard__num {
  display: block;
  margin: 14px 0 10px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 1;
  color: var(--paper);
}

.page-home .ledgercard__num span {
  margin-left: 8px;
  font-size: var(--fs-small);
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-home .ledgercard__text {
  margin: 0;
  max-width: 34em;
  color: var(--mist);
}

.page-home .tracks {
  margin: clamp(22px, 3vw, 34px) 0 0;
}

.page-home .tracks img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-home .tracks__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-home .folds {
  margin-top: clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--line);
}

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

.page-home .fold__btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 17px 2px;
  background: none;
  border: 0;
  font-family: inherit;
  font-size: var(--fs-h3);
  color: var(--paper);
  text-align: left;
  cursor: pointer;
}

.page-home .fold__btn[aria-expanded="true"] {
  color: var(--cyan);
}

.page-home .fold__sign {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  color: var(--cyan);
}

.page-home .fold__panel {
  padding: 0 2px 20px;
}

.page-home .fold__panel p {
  margin: 0;
  max-width: 34em;
  color: var(--mist);
}

.page-home .folds__foot {
  margin-top: 20px;
}

/* ---------- 04 时间跨度与版本 ---------- */
.page-home .spanband {
  margin: 0 0 clamp(22px, 3vw, 34px);
}

.page-home .spanband img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.page-home .ruler {
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-home .ruler__bar {
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background-color: var(--panel);
  background-image: linear-gradient(90deg, rgba(127, 163, 184, 0.55) 0 1px, transparent 1px);
  background-size: calc(100% / 30) 100%;
  background-repeat: repeat-x;
}

.page-home .ruler__labels {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-home .versions {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-home .version {
  position: relative;
  padding: 16px 0 0 20px;
  border-left: 1px solid var(--line);
}

.page-home .version::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 20px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-home .version--current::before {
  background: var(--amber);
  box-shadow: 0 0 0 4px var(--amber-soft);
}

.page-home .version__tag {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-home .version--current .version__tag {
  color: var(--amber);
}

.page-home .version__title {
  margin: 8px 0 6px;
  font-size: var(--fs-h3);
  color: var(--paper);
}

.page-home .version__body {
  margin: 0;
  font-size: var(--fs-small);
  color: var(--muted);
  max-width: 34em;
}

/* ---------- 05 节奏与联系 ---------- */
.page-home .pacegrid {
  border-top: 1px solid var(--line);
}

.page-home .pacerow {
  display: grid;
  gap: 4px 22px;
  padding: 17px 2px;
  border-bottom: 1px solid var(--line);
}

.page-home .pacerow__k {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-home .pacerow p {
  margin: 0;
  max-width: 42em;
  color: var(--mist);
}

.page-home .contactcard {
  margin-top: clamp(26px, 4vw, 40px);
  padding: clamp(22px, 3.2vw, 34px);
}

.page-home .contactcard__lead {
  margin: 12px 0 0;
  max-width: 34em;
  color: var(--mist);
}

.page-home .contactcard__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  color: var(--paper);
}

.page-home .contactcard__list li {
  padding-left: 14px;
  border-left: 2px solid var(--line-strong);
  word-break: break-word;
}

.page-home .contactcard__links {
  margin: 20px 0 0;
  font-size: var(--fs-small);
  color: var(--muted);
}

.page-home .contactcard__links a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

/* ---------- 入场动效 ---------- */
.page-home [data-reveal="in"] {
  animation: home-rise 240ms ease both;
}

@keyframes home-rise {
  from {
    opacity: 0.01;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-home .routes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .statsplit {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-home .kn {
    border-bottom: 0;
    border-left: 2px solid var(--line-strong);
    padding: 4px 0 4px 14px;
  }
}

@media (min-width: 820px) {
  .page-home .cover__foot {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-home .ledgergrid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
  }

  .page-home .pacerow {
    grid-template-columns: 150px minmax(0, 1fr);
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-home .cover__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
    gap: 40px;
  }

  .page-home .cover__vert {
    writing-mode: vertical-rl;
    border-left: 0;
    border-right: 2px solid var(--line-strong);
    padding: 0 10px 0 0;
    margin-top: 6px;
    letter-spacing: 0.24em;
  }

  .page-home .ringgrid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }

  .page-home .versions {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0 22px;
  }
}

@media (min-width: 1040px) {
  .page-home .section__head {
    grid-template-columns: auto minmax(0, 1fr) minmax(0, 28ch);
    align-items: baseline;
    gap: 8px 22px;
  }

  .page-home .section__note {
    text-align: right;
  }

  .page-home .mapgrid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    gap: 44px;
    align-items: start;
  }

  .page-home .mapaside {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home [data-reveal="in"] {
    animation: none;
  }

  .page-home .routes a,
  .page-home .spanchips a,
  .page-home .maprow {
    transition: none;
  }
}