.page-home {
  --home-radius-lg: 24px;
  --home-radius-sm: 6px;
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  background: var(--jb-abyss);
  color: var(--jb-mist);
  padding: clamp(26px, 5vw, 60px) 0 clamp(40px, 6vw, 86px);
  overflow: hidden;
}

.page-home .hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

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

.page-home .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--jb-silver);
}

.page-home .breadcrumb__item:not(:first-child)::before {
  content: "/";
  margin-right: 6px;
  color: var(--jb-steel);
}

.page-home .breadcrumb__current {
  color: var(--jb-orange);
}

.page-home .hero__eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  color: var(--jb-silver);
}

.page-home .hero__title {
  margin: 0 0 18px;
  max-width: 16ch;
  font-family: var(--font-display);
  font-size: clamp(32px, 6vw, 52px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: #fff;
}

.page-home .hero__lead {
  margin: 0 0 26px;
  max-width: 48ch;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: rgba(241, 244, 247, .78);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 0 30px;
}

.page-home .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .18s ease, border-color .18s ease, color .18s ease;
}

.page-home .btn--accent {
  background: var(--jb-orange);
  color: #fff;
}

.page-home .btn--accent:hover {
  background: var(--jb-orange-dark);
  color: #fff;
}

.page-home .btn--ghost {
  background: transparent;
  border-color: rgba(169, 182, 194, .45);
  color: var(--jb-mist);
}

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

.page-home .btn--quiet {
  background: transparent;
  border-color: var(--jb-hairline);
  color: var(--jb-ink);
}

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

.page-home .hero__steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid rgba(169, 182, 194, .22);
}

.page-home .hero-step {
  display: flex;
  align-items: baseline;
  gap: 7px;
  min-width: 0;
}

.page-home .hero-step__num {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--jb-orange);
}

.page-home .hero-step__label {
  font-size: 13px;
  line-height: 1.4;
  color: rgba(241, 244, 247, .78);
}

.page-home .hero__visual {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

.page-home .hero__visual::before {
  content: "";
  position: absolute;
  inset: -6% -4% 16% -4%;
  background-image:
    repeating-linear-gradient(0deg, rgba(169, 182, 194, .13) 0 1px, transparent 1px 46px),
    repeating-linear-gradient(90deg, rgba(169, 182, 194, .13) 0 1px, transparent 1px 46px);
  -webkit-mask-image: radial-gradient(ellipse at 62% 34%, #000 8%, transparent 72%);
  mask-image: radial-gradient(ellipse at 62% 34%, #000 8%, transparent 72%);
  pointer-events: none;
  z-index: 0;
}

.page-home .hero__frame {
  position: relative;
  z-index: 1;
  margin: 0;
  border: 1px solid rgba(169, 182, 194, .2);
  border-radius: var(--home-radius-lg) var(--home-radius-sm) var(--home-radius-lg) var(--home-radius-lg);
  overflow: hidden;
  background: var(--jb-navy);
}

.page-home .hero__frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: cover;
}

.page-home .chip-row {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .chip {
  padding: 6px 14px;
  border: 1px solid rgba(169, 182, 194, .28);
  border-radius: var(--radius-pill);
  background: rgba(18, 38, 60, .6);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--jb-silver);
}

/* ---------- 侧边索引 ---------- */
.page-home .index-rail {
  display: none;
}

/* ---------- 通用区块 ---------- */
.page-home .section {
  padding: clamp(48px, 7.5vw, 92px) 0;
}

.page-home .section--paper {
  background: var(--jb-mist);
  color: var(--jb-body);
}

.page-home .section--navy {
  background: var(--jb-navy);
  color: rgba(241, 244, 247, .8);
}

.page-home .section--abyss {
  background: var(--jb-abyss);
  color: rgba(241, 244, 247, .78);
}

.page-home .section--archive {
  background: var(--jb-archive);
  color: var(--jb-body);
}

.page-home .section__head {
  max-width: 62ch;
  margin: 0 0 clamp(28px, 4vw, 48px);
}

.page-home .section__title {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--jb-ink);
}

.page-home .section--navy .section__title,
.page-home .section--abyss .section__title {
  color: #fff;
}

.page-home .section__lead {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--jb-body);
}

.page-home .section--navy .section__lead,
.page-home .section--abyss .section__lead {
  color: rgba(241, 244, 247, .72);
}

.page-home .section--navy .index-label,
.page-home .section--abyss .index-label {
  color: var(--jb-silver);
}

.page-home .link-underline {
  position: relative;
  display: inline-block;
  color: inherit;
  padding-bottom: 2px;
  border-bottom: 1px solid currentColor;
  font-weight: 600;
  text-decoration: none;
}

.page-home .link-underline::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--jb-orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .18s ease;
}

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

/* ---------- 三步查询 ---------- */
.page-home .step-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  max-width: 880px;
}

.page-home .step {
  position: relative;
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 0 20px;
  padding: 0 0 30px;
}

.page-home .step::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 52px;
  bottom: 4px;
  width: 1px;
  background: var(--jb-hairline);
}

.page-home .step:last-child {
  padding-bottom: 0;
}

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

.page-home .step__num {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--jb-orange);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  line-height: 1;
}

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

.page-home .step__title {
  margin: 8px 0 6px;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--jb-ink);
}

.page-home .step__text {
  margin: 0;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--jb-body);
}

.page-home .note {
  position: relative;
  max-width: 62ch;
  margin: clamp(32px, 4vw, 48px) 0 0;
  padding: 4px 0 4px 20px;
  border-left: 2px solid var(--jb-orange);
}

.page-home .note .note__label {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--jb-orange-dark);
}

.page-home .note p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 问题分流 ---------- */
.page-home .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 26px;
}

.page-home .filter-btn {
  appearance: none;
  padding: 8px 16px;
  border: 1px solid rgba(169, 182, 194, .34);
  border-radius: var(--radius-pill);
  background: transparent;
  color: rgba(241, 244, 247, .76);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  cursor: pointer;
  transition: border-color .18s ease, color .18s ease, background-color .18s ease;
}

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

.page-home .filter-btn[aria-pressed="true"],
.page-home .filter-btn.is-active {
  background: var(--jb-orange);
  border-color: var(--jb-orange);
  color: #fff;
}

.page-home .route-list {
  display: grid;
  gap: 0;
}

.page-home .route-row {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  align-items: start;
  gap: 8px 18px;
  padding: 22px 4px 22px 0;
  border-top: 1px solid rgba(169, 182, 194, .2);
  color: inherit;
  text-decoration: none;
}

.page-home .route-row:last-child {
  border-bottom: 1px solid rgba(169, 182, 194, .2);
}

.page-home .route-row::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--jb-orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .18s ease;
}

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

.page-home .route-row__no {
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--jb-orange);
}

.page-home .route-row__body {
  display: block;
  min-width: 0;
}

.page-home .route-row__title {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: #fff;
}

.page-home .route-row__text {
  display: block;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(241, 244, 247, .68);
}

.page-home .route-row__badge {
  align-self: start;
  white-space: nowrap;
}

.page-home .badge {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
}

.page-home .badge--green {
  background: rgba(47, 191, 113, .16);
  border-color: rgba(47, 191, 113, .5);
  color: var(--jb-green);
}

.page-home .badge--amber {
  background: rgba(242, 176, 30, .16);
  border-color: rgba(242, 176, 30, .5);
  color: var(--jb-amber);
}

.page-home .badge--orange {
  background: rgba(255, 90, 31, .18);
  border-color: rgba(255, 90, 31, .5);
  color: #FF8963;
}

.page-home .badge--steel {
  background: rgba(169, 182, 194, .12);
  border-color: var(--jb-steel);
  color: var(--jb-silver);
}

.page-home [data-filter-item][hidden] {
  display: none;
}

/* ---------- 本周更新 ---------- */
.page-home .updates__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

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

.page-home .update-list {
  display: grid;
  gap: 0;
}

.page-home .fold {
  border-top: 1px solid rgba(58, 76, 94, .22);
}

.page-home .update:last-child {
  border-bottom: 1px solid rgba(58, 76, 94, .22);
}

.page-home .fold__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto 22px;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 18px 2px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: inherit;
}

.page-home .fold__title {
  min-width: 0;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--jb-ink);
}

.page-home .fold__state {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(58, 76, 94, .72);
  white-space: nowrap;
}

.page-home .fold__sign {
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  text-align: center;
  color: var(--jb-orange);
  transition: transform .22s ease;
}

.page-home .fold[data-open] .fold__sign {
  transform: rotate(45deg);
}

.page-home .fold__body {
  overflow: hidden;
  max-height: 0;
  transition: max-height .22s ease-out;
}

.page-home .fold[data-open] .fold__body {
  max-height: 480px;
}

.page-home .fold__inner {
  padding: 0 2px 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--jb-body);
}

.page-home .fold__inner p {
  margin: 0 0 8px;
}

.page-home .fold__inner p:last-child {
  margin-bottom: 0;
}

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

.page-home .updates__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  border-radius: var(--home-radius-sm) var(--home-radius-lg) var(--home-radius-lg) var(--home-radius-lg);
}

.page-home .updates__figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: rgba(58, 76, 94, .82);
}

/* ---------- 记录衔接 ---------- */
.page-home .switch__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: center;
}

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

.page-home .switch__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--home-radius-lg) var(--home-radius-sm) var(--home-radius-lg) var(--home-radius-lg);
}

.page-home .switch__figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: rgba(58, 76, 94, .82);
}

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

.page-home .switch__text {
  margin: 0 0 20px;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--jb-body);
}

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

.page-home .check-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--jb-body);
}

.page-home .check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--jb-orange);
}

/* ---------- 版本节点 ---------- */
.page-home .versions__timeline {
  margin: 0 0 34px;
}

.page-home .timeline__axis {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
}

.page-home .timeline__axis::before {
  content: "";
  position: absolute;
  left: 12%;
  right: 12%;
  top: 5px;
  height: 2px;
  background: linear-gradient(90deg, rgba(169, 182, 194, .28), rgba(255, 90, 31, .42));
}

.page-home .timeline__node {
  position: relative;
  display: block;
  padding-top: 22px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--jb-silver);
}

.page-home .timeline__node::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  width: 12px;
  height: 12px;
  margin-left: -6px;
  border-radius: 50%;
  background: var(--jb-abyss);
  border: 2px solid var(--jb-amber);
}

.page-home .timeline__node[data-current] {
  color: var(--jb-orange);
  font-weight: 700;
}

.page-home .timeline__node[data-current]::before {
  background: var(--jb-orange);
  border-color: var(--jb-orange);
  box-shadow: 0 0 0 5px rgba(255, 90, 31, .18);
}

.page-home .versions__figure {
  margin: 0 0 20px;
}

.page-home .versions__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border-radius: var(--home-radius-sm) var(--home-radius-lg) var(--home-radius-lg) var(--home-radius-lg);
}

.page-home .versions__figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: rgba(241, 244, 247, .55);
}

.page-home .versions__caption {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(241, 244, 247, .78);
}

.page-home .versions__caption .link-underline {
  color: var(--jb-orange);
}

/* ---------- 本地服务 ---------- */
.page-home .local__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

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

.page-home .local__text {
  margin: 0 0 18px;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(241, 244, 247, .78);
}

.page-home .local__more {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(241, 244, 247, .6);
}

.page-home .local__more .link-underline {
  color: var(--jb-orange);
}

.page-home .local__panel {
  padding: clamp(22px, 3vw, 30px);
  border: 1px solid rgba(169, 182, 194, .22);
  border-radius: var(--home-radius-sm) var(--home-radius-lg) var(--home-radius-lg) var(--home-radius-lg);
  background: rgba(11, 22, 34, .55);
}

.page-home .local__label {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--jb-orange);
}

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

.page-home .local__item {
  padding: 14px 0;
  border-top: 1px solid rgba(169, 182, 194, .16);
}

.page-home .local__item:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-home .local__item dt {
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--jb-silver);
}

.page-home .local__item dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(241, 244, 247, .9);
  word-break: break-word;
}

/* ---------- 焦点环 ---------- */
.page-home :focus-visible {
  outline: 2px solid var(--jb-green);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 639px) {
  .page-home .hero__steps {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .page-home .route-row {
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 6px 14px;
  }

  .page-home .route-row__badge {
    grid-column: 2;
    justify-self: start;
    margin-top: 4px;
  }

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

  .page-home .fold__state {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .page-home .timeline__node {
    font-size: 12px;
  }
}

@media (min-width: 640px) {
  .page-home .hero__frame {
    border-radius: var(--home-radius-lg) var(--home-radius-sm) var(--home-radius-lg) var(--home-radius-lg);
  }
}

@media (min-width: 900px) {
  .page-home .hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-home .hero__frame {
    max-width: 520px;
  }

  .page-home .switch__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-home .local__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 4vw, 60px);
  }
}

@media (min-width: 1000px) {
  .page-home .updates__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 4vw, 56px);
  }
}

@media (min-width: 1560px) {
  .page-home .index-rail {
    display: flex;
    flex-direction: column;
    gap: 2px;
    position: fixed;
    top: 50%;
    left: 20px;
    z-index: 30;
    width: 134px;
    padding: 14px 14px 14px 16px;
    border-left: 2px solid rgba(44, 66, 87, .3);
    transform: translateY(-50%);
  }

  .page-home .index-rail .index-label {
    margin: 0 0 10px;
    font-size: 11px;
    color: var(--jb-silver);
  }

  .page-home .index-rail__link {
    display: block;
    padding: 5px 0;
    font-size: 13px;
    line-height: 1.5;
    color: var(--jb-body);
    text-decoration: none;
    transition: color .18s ease;
  }

  .page-home .index-rail__link:hover {
    color: var(--jb-orange-dark);
  }

  .page-home .index-rail__link[aria-current="true"] {
    margin-left: -12px;
    padding-left: 12px;
    color: var(--jb-orange-dark);
    font-weight: 600;
    box-shadow: inset 2px 0 0 var(--jb-orange);
  }
}