.page-home {
  --home-slant: 26px;
  --home-paper: #FFFFFF;
}

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

/* ---------- 首屏：斜切色块 ---------- */
.page-home .hero {
  background: var(--paper);
}

.page-home .hero__band {
  background: var(--ink-900);
  color: var(--paper);
  padding: 26px 0 calc(40px + var(--home-slant));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--home-slant)), 0 100%);
}

.page-home .hero__band-inner {
  display: grid;
  gap: 22px;
  align-items: center;
}

.page-home .hero .breadcrumbs {
  color: var(--teal-soft);
  margin: 0 0 10px;
}

.page-home .hero__eyebrow {
  color: var(--teal);
  margin: 0 0 8px;
}

.page-home .hero__band-note {
  margin: 0;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--teal-soft);
}

.page-home .hero__visual img {
  display: block;
  width: 100%;
  height: 168px;
  object-fit: cover;
  opacity: .78;
  border: 1px solid rgba(143, 227, 214, .35);
}

.page-home .hero__body {
  padding: 30px 0 48px;
}

.page-home .hero__seam {
  display: block;
  width: 104px;
  height: 3px;
  margin-bottom: 18px;
  background: linear-gradient(90deg, var(--teal) 0, var(--teal) 82px, var(--orange) 82px, var(--orange) 104px);
}

.page-home .hero h1 {
  margin: 0 0 18px;
  font-size: clamp(29px, 7vw, 46px);
  line-height: 1.18;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--ink-900);
  max-width: 22em;
}

.page-home .hero__lede {
  margin: 0;
  max-width: 62ch;
  color: var(--text-ink);
}

.page-home .hero__actions {
  margin-top: 26px;
  gap: 12px;
}

.page-home .hero__aside {
  margin: 18px 0 0;
  font-size: 14px;
  color: var(--text-ink);
}

.page-home .hero__aside a {
  color: var(--orange-deep);
  font-weight: 700;
}

/* ---------- 章节索引条 ---------- */
.page-home .chapter-map {
  background: var(--mist);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-home .chapter-map__list {
  display: flex;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-home .chapter-map__list li {
  flex: 0 0 auto;
  border-right: 1px solid var(--line);
}

.page-home .chapter-map__list li:last-child {
  border-right: 0;
}

.page-home .chapter-map__list a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px;
  font-size: 14px;
  color: var(--ink-900);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-home .chapter-map__list a .mono {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--teal);
}

.page-home .chapter-map__list a:hover {
  background: var(--paper);
  color: var(--orange-deep);
}

.page-home .chapter-map__list a:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: -2px;
}

/* ---------- 章节骨架 ---------- */
.page-home .chapter {
  display: grid;
  gap: 10px;
}

.page-home .chapter__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 32px;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--teal);
}

.page-home .chapter__title {
  margin: 0;
  font-size: clamp(24px, 4.6vw, 34px);
  line-height: 1.24;
  letter-spacing: -.015em;
  font-weight: 800;
  color: var(--ink-900);
}

.page-home .chapter__body > .lede {
  margin: 12px 0 0;
  max-width: 64ch;
}

.page-home .chapter__note {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--teal-soft);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-ink);
}

.page-home .chapter__note a {
  color: var(--orange-deep);
  font-weight: 700;
}

/* ---------- 当季速览 ---------- */
.page-home .brief-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-home .brief-list li {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-ink);
}

.page-home .brief-list__k {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--teal);
}

.page-home .brief-list a {
  color: var(--orange-deep);
  font-weight: 700;
}

/* ---------- 服务清单 ---------- */
.page-home .svc {
  margin-top: 32px;
  display: grid;
  gap: 28px;
}

.page-home .svc__aside {
  border-top: 3px solid var(--ink-900);
  padding-top: 14px;
}

.page-home .svc__aside-label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--teal);
}

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

.page-home .svc__aside-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 7px;
  border-bottom: 1px dashed var(--line);
  font-size: 14px;
  color: var(--text-ink);
}

.page-home .svc__aside-list .mono {
  color: var(--orange-deep);
  font-size: 13px;
}

.page-home .svc__aside-note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-ink);
}

.page-home .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.page-home .filter-btn {
  font: inherit;
  font-size: 14px;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink-900);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-home .filter-btn:hover {
  border-color: var(--orange);
}

.page-home .filter-btn[aria-pressed="true"] {
  border-color: var(--orange);
  background: var(--teal-soft);
  font-weight: 700;
}

.page-home .filter-btn:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

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

.page-home .svc__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  grid-template-areas:
    "no name"
    "desc desc"
    "tag tag";
  gap: 8px 12px;
  padding: 16px 18px;
  background: var(--home-paper);
  border: 1px solid var(--line);
  border-radius: 2px;
  box-shadow: var(--shadow-lift);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-home .svc__item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift-hover);
  border-color: var(--teal);
}

.page-home .svc__no {
  grid-area: no;
  padding-top: 3px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--teal);
}

.page-home .svc__name {
  grid-area: name;
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--ink-900);
}

.page-home .svc__desc {
  grid-area: desc;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-ink);
}

.page-home .svc__tag {
  grid-area: tag;
  justify-self: start;
}

.page-home .svc__figure {
  margin: 28px 0 0;
}

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

/* ---------- 焕新版四步顺序 ---------- */
.page-home .steps {
  list-style: none;
  counter-reset: step;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-home .steps__item {
  counter-increment: step;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  grid-template-areas:
    "no title"
    "no text";
  gap: 6px 14px;
  padding: 16px 18px;
  background: var(--home-paper);
  border: 1px solid var(--line);
  border-left: 4px solid var(--teal);
}

.page-home .steps__item::before {
  content: counter(step, decimal-leading-zero);
  grid-area: no;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .04em;
  color: var(--orange-deep);
  padding-top: 2px;
}

.page-home .steps__title {
  grid-area: title;
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--ink-900);
}

.page-home .steps__text {
  grid-area: text;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-ink);
}

.page-home .steps__note {
  margin: 20px 0 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-ink);
}

.page-home .steps__note a {
  color: var(--orange-deep);
  font-weight: 700;
}

/* ---------- 版本对照 ---------- */
.page-home .version-tabs {
  margin-top: 24px;
}

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

.page-home .vcard {
  padding: 20px 20px 24px;
  background: var(--home-paper);
  border: 1px solid var(--line);
  border-top: 4px solid var(--ink-700);
  border-radius: 2px;
  box-shadow: var(--shadow-lift);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-home .vcard:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift-hover);
}

.page-home .vcard--main {
  border-top-color: var(--teal);
}

.page-home .vcard--hist {
  border-top-color: var(--ink-700);
}

.page-home .vcard--both {
  border-top-color: var(--orange);
}

.page-home .vcard__label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--teal);
}

.page-home .vcard__title {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--ink-900);
}

.page-home .vcard__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-ink);
}

.page-home .vcard__list {
  margin: 14px 0 0;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--text-ink);
}

.page-home .version-figure {
  margin: 28px 0 0;
}

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

/* ---------- 深色数字区 ---------- */
.page-home .section--ink {
  background: var(--ink-900);
  color: var(--paper);
}

.page-home .section--ink .chapter__title {
  color: var(--paper);
}

.page-home .section--ink .chapter__index {
  color: var(--teal-soft);
}

.page-home .section--ink .chapter__body > .lede {
  color: var(--teal-soft);
}

.page-home .stats__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.page-home .stat {
  padding-top: 14px;
  border-top: 2px solid var(--teal);
}

.page-home .stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 5.4vw, 42px);
  line-height: 1.05;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-home .stat__num em {
  font-style: normal;
  margin-left: 4px;
  font-size: .48em;
  color: var(--teal);
}

.page-home .stat__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--teal-soft);
}

.page-home .stats__note {
  margin: 34px 0 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--teal-soft);
}

.page-home .stats__figure {
  margin: 32px 0 0;
}

.page-home .stats__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(143, 227, 214, .3);
}

.page-home .stats__figure .media-frame__caption {
  color: var(--teal-soft);
}

/* ---------- 尾栏索引 ---------- */
.page-home .tail-index {
  background: var(--mist);
}

.page-home .tail-index__title {
  margin: 0 0 20px;
  font-size: 22px;
  font-weight: 800;
  color: var(--ink-900);
}

.page-home .tail-index__grid {
  display: grid;
  gap: 22px;
}

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

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

.page-home .tail-index__list a {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 12px 0;
  font-size: 15px;
  color: var(--ink-900);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-home .tail-index__list a .mono {
  color: var(--teal);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-home .tail-index__list a:hover {
  color: var(--orange-deep);
}

.page-home .tail-index__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-home .tail-index__links a {
  font-size: 15px;
  color: var(--ink-700);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-home .tail-index__links a:hover {
  color: var(--orange-deep);
  border-bottom-color: var(--orange);
}

.page-home a:focus-visible,
.page-home button:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-home .brief-list li {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 18px;
  }

  .page-home .hero__visual img {
    height: 220px;
  }
}

@media (min-width: 820px) {
  .page-home .chapter {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 30px;
  }

  .page-home .chapter__index {
    font-size: 44px;
  }

  .page-home .tail-index__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 44px;
  }
}

@media (min-width: 880px) {
  .page-home {
    --home-slant: 56px;
  }

  .page-home .hero__band {
    padding: 54px 0 calc(94px + var(--home-slant));
  }

  .page-home .hero__band-inner {
    grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr);
    gap: 44px;
  }

  .page-home .hero__visual img {
    height: 300px;
  }

  .page-home .hero__body {
    padding: 36px 0 66px;
  }

  .page-home .chapter-map__list {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    overflow: visible;
  }

  .page-home .chapter-map__list li {
    border-right: 1px solid var(--line);
  }

  .page-home .chapter-map__list a {
    justify-content: center;
    padding: 16px 10px;
  }
}

@media (min-width: 960px) {
  .page-home .svc {
    grid-template-columns: 214px minmax(0, 1fr);
    gap: 42px;
    align-items: start;
  }

  .page-home .svc__aside {
    position: sticky;
    top: calc(var(--brand-bar-h) + 76px);
  }

  .page-home .svc__item {
    grid-template-columns: 56px minmax(0, 1fr) auto;
    grid-template-areas:
      "no name tag"
      "no desc desc";
    gap: 6px 18px;
    padding: 18px 22px;
  }

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

  .page-home .stats__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 26px;
  }

  .page-home .media-frame--slant img {
    transform: translateX(-6px);
  }
}