.page-home {
  background: var(--fog);
  color: var(--ink);
  padding-bottom: clamp(48px, 7vw, 92px);
}

.page-home .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 30px) 0 clamp(12px, 2vw, 18px);
}

.page-home .crumbs-coord {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--slate);
}

/* ---------- 首屏拼贴 ---------- */
.page-home .collage {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-home .tile {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.4vw, 32px);
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  background: var(--mist);
  overflow: hidden;
  transition: transform .28s var(--ease), border-color .28s var(--ease);
}

.page-home .tile:hover {
  transform: translateY(-3px);
  border-color: var(--teal-700);
}

.page-home .tile__body {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-home .tile p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--slate);
}

.page-home .tile h2 {
  margin: 0;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.42;
  letter-spacing: -.01em;
  font-weight: 800;
  color: var(--ink);
}

/* 品牌拼贴块 */
.page-home .tile--brand {
  justify-content: flex-end;
  min-height: 340px;
  padding-top: clamp(24px, 3vw, 40px);
  background: var(--ink);
  border-color: var(--ink);
  border-top: 4px solid var(--orange);
  color: var(--mist);
}

.page-home .tile__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .34;
  filter: grayscale(.35) contrast(1.06);
}

.page-home .tile--brand::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(11, 31, 42, .32) 0%, rgba(11, 31, 42, .82) 58%, rgba(11, 31, 42, .96) 100%);
}

.page-home .eyebrow--light {
  color: rgba(245, 247, 248, .68);
}

.page-home h1 {
  margin: 0;
  max-width: 24ch;
  font-size: clamp(27px, 4vw, 48px);
  line-height: 1.18;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--mist);
}

.page-home .tile__lead {
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(245, 247, 248, .8) !important;
}

.page-home .brand-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 2px 0 0;
  padding: 14px 0 0;
  list-style: none;
  border-top: 1px solid var(--rule-dark);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: rgba(245, 247, 248, .62);
}

.page-home .brand-facts li {
  display: flex;
  align-items: center;
  gap: 7px;
}

.page-home .brand-facts li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--signal);
}

/* 03 更新记录块 */
.page-home .tile--notes {
  justify-content: space-between;
  min-height: 300px;
  background: var(--mist);
  border-left: 3px solid var(--signal);
}

.page-home .tile--notes .btn {
  align-self: flex-start;
}

.page-home .tile__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1;
  letter-spacing: -.02em;
  font-weight: 600;
  color: var(--ink);
}

/* 版本块 */
.page-home .tile--version {
  justify-content: center;
  gap: 6px;
  background: var(--teal-900);
  border-color: var(--teal-900);
  color: var(--mist);
}

.page-home .tile--version .tile__num {
  font-size: clamp(26px, 3vw, 34px);
  color: var(--mist);
}

.page-home .tile--version .tile__label {
  font-size: 13px;
  font-weight: 700;
  color: var(--signal-soft) !important;
}

.page-home .tile--version .tile__meta {
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(245, 247, 248, .62) !important;
}

/* 联系入口块 */
.page-home .tile--reach {
  padding: 0;
  background: var(--orange);
  border-color: rgba(11, 31, 42, .35);
  color: var(--ink);
  flex-direction: column;
}

.page-home .tile--reach .tile__body {
  padding: clamp(20px, 2.4vw, 32px);
  gap: 12px;
}

.page-home .tile--reach p {
  color: rgba(11, 31, 42, .84);
}

.page-home .tile--reach .btn--ink {
  align-self: flex-start;
  background: var(--ink);
  border-color: var(--ink);
  color: var(--mist);
}

.page-home .tag--dark {
  align-self: flex-start;
  background: var(--ink);
  border-color: var(--ink);
  color: var(--mist);
}

.page-home .tile__thumb {
  margin: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-top: 1px solid rgba(11, 31, 42, .3);
}

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

/* 联系入口内的展开说明 */
.page-home .mini-fold {
  margin-top: 4px;
  padding-top: 10px;
  border-top: 1px solid rgba(11, 31, 42, .28);
  font-size: 13.5px;
}

.page-home .mini-fold summary {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  color: var(--ink);
}

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

.page-home .mini-fold summary::before {
  content: "+";
  display: inline-block;
  width: 13px;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--ink);
}

.page-home .mini-fold[open] summary::before {
  content: "–";
}

.page-home .mini-fold p {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.72;
  color: rgba(11, 31, 42, .82);
}

/* ---------- 正文章节 ---------- */
.page-home .sec {
  padding-top: clamp(46px, 6vw, 88px);
}

.page-home .sec__head {
  position: relative;
  margin-bottom: clamp(20px, 3vw, 32px);
  padding-top: 18px;
  border-top: 1px solid var(--rule-strong);
}

.page-home .sec__head::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 56px;
  height: 3px;
  background: var(--orange);
}

.page-home .sec h2 {
  margin: 8px 0 0;
  max-width: 26ch;
  font-size: clamp(22px, 2.8vw, 34px);
  line-height: 1.28;
  letter-spacing: -.015em;
  font-weight: 800;
}

.page-home .split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.5vw, 48px);
}

.page-home .lead-p {
  margin: 0 0 20px;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--teal-900);
}

.page-home .hint-line {
  margin: 14px 0 0;
  font-size: 13.5px;
  color: var(--slate);
}

.page-home .hint-line a {
  color: var(--teal-900);
  text-decoration: none;
  border-bottom: 1px solid var(--orange);
}

.page-home .hint-line a:hover {
  color: var(--orange);
}

/* 步骤 */
.page-home .steps {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  counter-reset: step;
  border-top: 1px solid var(--rule);
}

.page-home .steps li {
  position: relative;
  counter-increment: step;
  padding: 14px 0 14px 46px;
  border-bottom: 1px solid var(--rule);
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink);
}

.page-home .steps li::before {
  content: "0" counter(step);
  position: absolute;
  left: 0;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  font-weight: 600;
  color: var(--orange);
}

/* 插图 */
.page-home .figure {
  margin: 0;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  background: var(--mist);
  overflow: hidden;
}

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

.page-home .figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--slate);
}

/* 三条路径 */
.page-home .paths {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule-strong);
}

.page-home .paths li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
}

.page-home .paths__dot {
  flex: none;
  width: 9px;
  height: 9px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 4px rgba(47, 163, 107, .16);
}

.page-home .paths__text {
  flex: 1 1 auto;
}

.page-home .paths__name {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.page-home .paths__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--slate);
}

.page-home .paths__link {
  flex: none;
  margin-top: 2px;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--orange);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--teal-900);
  text-decoration: none;
  white-space: nowrap;
}

.page-home .paths__link:hover {
  color: var(--orange);
}

/* 变更说明折叠组 */
.page-home .folds {
  border-top: 1px solid var(--rule-strong);
}

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

.page-home .fold summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
}

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

.page-home .fold summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--orange);
}

.page-home .fold[open] summary::after {
  content: "–";
}

.page-home .fold__idx {
  flex: none;
  padding: 3px 6px;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-home .fold__idx--wine { background: var(--wine); }
.page-home .fold__idx--indigo { background: var(--indigo); }
.page-home .fold__idx--teal { background: var(--teal-700); }

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

.page-home .fold__body p {
  margin: 0;
  max-width: 64ch;
  font-size: 14px;
  line-height: 1.82;
  color: var(--teal-900);
}

.page-home .fold[open] .fold__body {
  animation: home-fold-in .3s var(--ease);
}

@keyframes home-fold-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: none; }
}

/* 旁注卡 */
.page-home .aside-card {
  align-self: start;
  padding: clamp(22px, 2.6vw, 32px);
  border: 1px solid var(--ink);
  border-radius: 2px;
  background: var(--ink);
  color: var(--mist);
}

.page-home .aside-card__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--signal-soft);
}

.page-home .aside-card p {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 247, 248, .78);
}

/* 城市服务场景网格 */
.page-home .scene-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: 0 0 24px;
  padding: 0;
  border: 1px solid var(--rule-strong);
  background: var(--rule-strong);
}

.page-home .scene-list li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 16px 14px;
  background: var(--mist);
  font-size: 15px;
  font-weight: 700;
  transition: background .2s var(--ease);
}

.page-home .scene-list li:hover {
  background: var(--fog);
}

.page-home .scene-list__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--slate);
}

/* 版本统计 */
.page-home .stat-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: 0 0 24px;
  border: 1px solid var(--rule-strong);
  background: var(--rule-strong);
}

.page-home .stat-row > div {
  padding: 16px 14px;
  background: var(--mist);
}

.page-home .stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.4vw, 27px);
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--teal-900);
}

.page-home .stat-cap {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--slate);
}

/* 延伸入口带 */
.page-home .next-band {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 28px;
  margin-top: clamp(46px, 6vw, 88px);
  padding-top: 20px;
  border-top: 3px solid var(--ink);
}

.page-home .next-band__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--slate);
}

.page-home .next-band__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
}

.page-home .next-band__links a {
  font-size: 14px;
  font-weight: 700;
  color: var(--teal-900);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.page-home .next-band__links a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-home .scene-list { grid-template-columns: repeat(4, 1fr); }
  .page-home .stat-row { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 768px) {
  .page-home .collage {
    grid-template-columns: repeat(12, 1fr);
    gap: 14px;
  }

  .page-home .tile--brand { grid-column: 1 / span 7; }
  .page-home .tile--notes { grid-column: 8 / span 5; }
  .page-home .tile--version { grid-column: 1 / span 3; }
  .page-home .tile--reach { grid-column: 4 / span 9; }

  .page-home .tile--reach {
    flex-direction: row;
    align-items: stretch;
  }

  .page-home .tile--reach .tile__body {
    flex: 1 1 auto;
  }

  .page-home .tile--reach .tile__thumb {
    flex: 0 0 190px;
    aspect-ratio: auto;
    border-top: 0;
    border-left: 1px solid rgba(11, 31, 42, .3);
  }
}

@media (min-width: 900px) {
  .page-home .split {
    grid-template-columns: 1.05fr .95fr;
    align-items: start;
  }

  .page-home .split > .figure {
    position: sticky;
    top: 24px;
  }
}

@media (min-width: 1024px) {
  .page-home .scene-list { grid-template-columns: repeat(6, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .tile,
  .page-home .scene-list li,
  .page-home .next-band__links a {
    transition: none;
  }

  .page-home .tile:hover {
    transform: none;
  }

  .page-home .fold[open] .fold__body {
    animation: none;
  }
}