.page-home {
  --home-rail-w: 232px;
  --home-gap: 24px;
  display: block;
  background: var(--bb-mist);
  color: var(--bb-ink);
  overflow-x: hidden;
}

/* ---------- 首屏刊头与本期索引 ---------- */
.page-home .home-lead {
  position: relative;
  padding: 32px 0 44px;
  background: linear-gradient(180deg, #ffffff 0%, var(--bb-mist) 100%);
  border-bottom: 1px solid var(--bb-silver);
  overflow: hidden;
}

.page-home .home-lead::after {
  content: "";
  position: absolute;
  top: -80px;
  right: -140px;
  width: 420px;
  height: 420px;
  background: repeating-linear-gradient(24deg, rgba(11, 95, 255, 0.09) 0 2px, transparent 2px 15px);
  pointer-events: none;
}

.page-home .home-lead__inner {
  position: relative;
  z-index: 1;
}

.page-home .home-lead__title {
  margin: 12px 0 0;
  font-size: clamp(44px, 9vw, 86px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--bb-navy);
}

.page-home .home-lead__title::after {
  content: "";
  display: block;
  width: 104px;
  height: 4px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--bb-blue) 0 68%, var(--bb-amber) 68% 100%);
}

.page-home .home-lead__statement {
  max-width: 32em;
  margin: 24px 0 0;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.75;
  color: var(--bb-ink);
}

.page-home .home-lead__desc {
  max-width: 38em;
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--bb-ink-soft);
}

.page-home .home-toc {
  margin-top: 34px;
  padding-top: 16px;
  border-top: 1px solid var(--bb-silver);
}

.page-home .home-toc__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-home .home-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 12px;
  background: #fff;
  border: 1px solid var(--bb-silver);
  border-left: 3px solid var(--bb-blue);
  color: var(--bb-navy);
  font-size: 15px;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-home .home-toc__list a:hover {
  border-color: var(--bb-blue);
  border-left-color: var(--bb-amber);
  color: var(--bb-blue);
  transform: translateX(2px);
}

.page-home .home-toc__list .mono {
  font-size: 12px;
  color: var(--bb-blue);
  letter-spacing: 0.06em;
}

/* ---------- 巨型数字锚点 ---------- */
.page-home .home-anchors {
  position: relative;
  padding: 48px 0 56px;
  color: #fff;
  background: var(--bb-navy);
  overflow: hidden;
}

.page-home .home-anchors__title {
  margin: 0 0 30px;
  font-size: clamp(23px, 3.4vw, 34px);
  line-height: 1.35;
  color: #fff;
}

.page-home .home-anchors__grid {
  display: grid;
  gap: 30px;
}

.page-home .home-figure__num {
  margin: 0;
  font-size: clamp(72px, 15vw, 148px);
  line-height: 0.86;
  letter-spacing: -0.03em;
  color: #fff;
}

.page-home .home-figure--silver .home-figure__num {
  color: var(--bb-silver);
}

.page-home .home-figure__cap {
  margin: 8px 0 0;
  font-size: 18px;
  letter-spacing: 0.06em;
  color: var(--bb-amber);
}

.page-home .home-figure--silver .home-figure__cap {
  color: var(--bb-silver);
}

.page-home .home-figure__text {
  max-width: 30em;
  margin: 14px 0 20px;
  font-size: 15.5px;
  line-height: 1.88;
  color: rgba(255, 255, 255, 0.8);
}

.page-home .home-anchors__grid .btn {
  display: inline-block;
}

.page-home .home-anchors__img {
  border: 1px solid rgba(201, 210, 220, 0.45);
}

.page-home .home-anchors__img .img-frame__caption {
  color: rgba(255, 255, 255, 0.68);
}

/* ---------- 斜线分隔带 ---------- */
.page-home .slant-band {
  height: 26px;
  background: repeating-linear-gradient(24deg, rgba(11, 95, 255, 0.42) 0 2px, transparent 2px 13px), var(--bb-pale);
}

/* ---------- 主体两栏骨架 ---------- */
.page-home .home-body {
  display: grid;
  gap: 32px;
  padding: 44px 0 8px;
}

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

/* ---------- 型号索引导轨 ---------- */
.page-home .home-rail {
  padding: 20px 18px 24px;
  background: var(--bb-navy);
  color: #fff;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-home .home-rail .rail__title {
  margin: 0 0 16px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--bb-silver);
  border-bottom: 1px solid rgba(201, 210, 220, 0.25);
  padding-bottom: 10px;
}

.page-home .home-rail__group + .home-rail__group {
  margin-top: 18px;
}

.page-home .home-rail__glink {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding-left: 10px;
  border-left: 3px solid var(--bb-blue);
  color: #fff;
  font-size: 14px;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-home .home-rail__glink:hover {
  color: var(--bb-amber);
  border-left-color: var(--bb-amber);
}

.page-home .home-rail__glink .mono {
  font-size: 12px;
  color: var(--bb-silver);
  letter-spacing: 0.04em;
}

.page-home .home-rail__list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-home .home-rail__list a {
  display: block;
  min-width: 44px;
  padding: 5px 6px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--bb-silver);
  text-decoration: none;
  border: 1px solid rgba(201, 210, 220, 0.28);
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-home .home-rail__list a:hover,
.page-home .home-rail__list a:focus-visible {
  color: #fff;
  background: var(--bb-blue);
  border-color: var(--bb-blue);
}

/* ---------- 型号区间说明 ---------- */
.page-home .home-models__hint {
  color: var(--bb-ink-soft);
}

.page-home .home-tiers {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.page-home .home-tier {
  position: relative;
  padding: 22px 20px 24px;
  background: linear-gradient(var(--bb-blue), var(--bb-blue)) top left / 100% 4px no-repeat, #ffffff;
  border: 1px solid var(--bb-silver);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.page-home .home-tier__tag {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--bb-blue);
}

.page-home .home-tier__range {
  margin: 6px 0 12px;
  font-size: 26px;
  letter-spacing: -0.01em;
  color: var(--bb-navy);
}

.page-home .home-tier p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--bb-ink-soft);
}

/* ---------- 呼吸带 ---------- */
.page-home .breath {
  display: grid;
  gap: 10px;
  align-items: center;
  margin: 40px 0;
  padding: 26px 24px;
  background: var(--bb-teal);
  color: #fff;
}

.page-home .breath__label {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--bb-silver);
}

.page-home .breath__num {
  margin: 0;
  font-size: clamp(42px, 7vw, 66px);
  line-height: 0.9;
  color: var(--bb-amber);
}

.page-home .breath__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.88);
}

/* ---------- 四条线索 ---------- */
.page-home .home-paths__intro {
  color: var(--bb-ink-soft);
}

.page-home .home-paths .filter-bar {
  margin: 26px 0 4px;
}

.page-home .home-paths__grid {
  display: grid;
  gap: 22px;
  margin-top: 24px;
}

.page-home .home-card {
  position: relative;
  padding: 34px 22px 24px;
  background: #fff;
  border: 1px solid var(--bb-silver);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.page-home .home-card .cut-card__num {
  position: absolute;
  top: 14px;
  right: 20px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--bb-blue);
}

.page-home .home-card h3 {
  margin: 0;
  font-size: 20px;
  line-height: 1.5;
  color: var(--bb-navy);
}

.page-home .home-card__img {
  margin: 16px 0 4px;
  border: 1px solid var(--bb-silver);
}

.page-home .home-card__list {
  list-style: none;
  margin: 14px 0 20px;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-home .home-card__list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--bb-ink-soft);
}

.page-home .home-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  background: var(--bb-amber);
  transform: rotate(45deg);
}

/* ---------- 本期归档 ---------- */
.page-home .home-cases {
  margin-top: 56px;
  padding: 42px 0 46px;
  background: var(--bb-wine);
  color: #fff;
}

.page-home .home-cases__grid {
  display: grid;
  gap: 30px;
}

.page-home .home-cases .eyebrow {
  color: var(--bb-silver);
}

.page-home .home-cases h2 {
  margin: 8px 0 20px;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.4;
  color: #fff;
}

.page-home .home-cases .img-frame {
  border: 1px solid rgba(201, 210, 220, 0.4);
}

.page-home .home-cases .prose,
.page-home .home-cases .prose p {
  color: rgba(255, 255, 255, 0.86);
}

.page-home .home-quarters {
  list-style: none;
  margin: 26px 0 22px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-home .home-quarter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  padding: 11px 14px;
  background: rgba(255, 255, 255, 0.07);
  border-left: 3px solid rgba(255, 255, 255, 0.26);
  font-size: 14px;
}

.page-home .home-quarter.is-latest {
  background: rgba(255, 138, 61, 0.16);
  border-left-color: var(--bb-amber);
}

.page-home .home-quarter__name {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: #fff;
}

.page-home .home-quarter__meta {
  color: rgba(255, 255, 255, 0.74);
}

.page-home .home-collapse {
  margin-bottom: 24px;
}

.page-home .home-collapse .collapse__head {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 14.5px;
  text-align: left;
  cursor: pointer;
}

.page-home .home-collapse .collapse__head + .collapse__head {
  margin-top: 8px;
}

.page-home .home-collapse .collapse__body {
  padding: 14px 16px 16px;
  background: rgba(0, 0, 0, 0.18);
  color: rgba(255, 255, 255, 0.84);
  font-size: 14.5px;
  line-height: 1.85;
}

.page-home .home-collapse .collapse__body p {
  margin: 0;
}

.page-home .home-cases .btn {
  display: inline-block;
}

/* ---------- 本地服务与联系 ---------- */
.page-home .home-service {
  padding: 46px 0 56px;
  background: var(--bb-violet);
  color: #fff;
}

.page-home .home-service__grid {
  display: grid;
  gap: 32px;
}

.page-home .home-service .eyebrow {
  color: var(--bb-silver);
}

.page-home .home-service h2 {
  margin: 8px 0 18px;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.4;
  color: #fff;
}

.page-home .home-service__text > p {
  max-width: 38em;
  margin: 0 0 24px;
  font-size: 16px;
  line-height: 1.88;
  color: rgba(255, 255, 255, 0.85);
}

.page-home .home-service__img {
  border: 1px solid rgba(201, 210, 220, 0.42);
}

.page-home .home-contact {
  padding: 24px 22px 26px;
  background: rgba(255, 255, 255, 0.08);
  border-left: 4px solid var(--bb-amber);
}

.page-home .home-contact__title {
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--bb-silver);
}

.page-home .home-contact__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-home .home-contact__k {
  display: block;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.68);
}

.page-home .home-contact__v {
  display: block;
  margin-top: 4px;
  font-size: 16px;
  line-height: 1.6;
  color: #fff;
  word-break: break-word;
}

.page-home .home-contact__note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.74);
}

/* ---------- 显现兜底 ---------- */
.page-home [data-reveal] {
  opacity: 1;
}

/* ---------- 媒体查询 ---------- */
@media (min-width: 720px) {
  .page-home .home-lead {
    padding: 44px 0 56px;
  }

  .page-home .home-toc__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

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

  .page-home .home-contact__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 24px;
  }

  .page-home .home-contact__list li:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 820px) {
  .page-home .home-paths__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .page-home .home-paths__grid > :nth-child(even) {
    margin-top: 36px;
  }

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

  .page-home .home-tier:nth-child(2) {
    transform: translateY(16px);
  }

  .page-home .home-tier:nth-child(3) {
    transform: translateY(32px);
  }
}

@media (min-width: 900px) {
  .page-home .home-anchors {
    padding: 60px 0 70px;
  }

  .page-home .home-anchors__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--home-gap);
    align-items: start;
  }

  .page-home .home-figure:nth-of-type(1) {
    grid-column: 1 / span 4;
  }

  .page-home .home-figure:nth-of-type(2) {
    grid-column: 5 / span 4;
  }

  .page-home .home-anchors__img {
    grid-column: 9 / span 4;
    margin-top: 46px;
  }

  .page-home .home-cases__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 44px;
    align-items: start;
  }

  .page-home .home-service__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 46px;
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-home .home-lead {
    padding: 52px 0 64px;
  }

  .page-home .home-body {
    grid-template-columns: var(--home-rail-w) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
    padding: 56px 0 12px;
  }

  .page-home .home-rail {
    position: sticky;
    top: 24px;
    max-height: calc(100vh - 48px);
    overflow-y: auto;
  }

  .page-home .home-rail__list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
  }

  .page-home .home-rail__list a {
    min-width: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .home-toc__list a,
  .page-home .home-rail__glink,
  .page-home .home-rail__list a {
    transition: none;
  }

  .page-home .home-tier,
  .page-home .home-paths__grid > :nth-child(even) {
    transform: none;
  }
}