.page-home {
  --hm-grid: rgba(28, 31, 36, .07);
  --hm-gap: clamp(12px, 1.6vw, 20px);
  --hm-pad: clamp(18px, 2.4vw, 30px);
  background: var(--bb-paper);
  color: var(--bb-ink);
}

/* ---------- 页面上下文条 ---------- */
.page-home .page-context {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  margin: clamp(16px, 2.4vw, 28px) 0 0;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--bb-line-strong);
  font-size: 12.5px;
  color: rgba(28, 31, 36, .6);
}

.page-home .page-context__path,
.page-home .page-context__sep {
  font-family: var(--font-mono);
  letter-spacing: .06em;
}

.page-home .page-context__here {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 13.5px;
  color: var(--bb-ink);
}

.page-home .page-context__meta {
  margin-left: auto;
  font-size: 12px;
  color: rgba(28, 31, 36, .48);
}

/* ---------- 首屏拼贴 ---------- */
.page-home .home-hero {
  padding-top: clamp(18px, 2.6vw, 34px);
}

.page-home .hero-collage {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--hm-gap);
}

.page-home .collage-lead {
  display: flex;
  flex-direction: column;
  gap: clamp(12px, 1.6vw, 20px);
  padding: clamp(20px, 3.4vw, 40px);
  border: 1px solid var(--bb-line);
  border-radius: var(--r-lg);
  background-color: var(--bb-paper);
  background-image:
    repeating-linear-gradient(0deg, var(--hm-grid) 0 1px, transparent 1px 34px),
    repeating-linear-gradient(90deg, var(--hm-grid) 0 1px, transparent 1px 34px);
}

.page-home .hero-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(29px, 5.2vw, 58px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--bb-ink);
}

.page-home .hero-lede {
  margin: 0;
  max-width: 46ch;
  font-family: var(--font-serif);
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.85;
  color: rgba(28, 31, 36, .82);
}

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

.page-home .hero-marks li {
  padding: 6px 13px;
  border: 1px solid var(--bb-line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, .55);
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(28, 31, 36, .76);
  font-variant-numeric: tabular-nums;
}

.page-home .collage-visual {
  position: relative;
  margin: 0;
  display: grid;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--bb-line);
  background: var(--bb-indigo);
}

.page-home .collage-visual img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 240px;
  object-fit: cover;
}

.page-home .collage-visual__cap {
  position: absolute;
  top: clamp(12px, 1.6vw, 18px);
  right: clamp(12px, 1.6vw, 18px);
  max-width: 22ch;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(244, 241, 234, .9);
  color: var(--bb-ink);
  font-size: 11.5px;
  line-height: 1.5;
}

.page-home .collage-visual__badge {
  position: absolute;
  left: clamp(14px, 1.8vw, 22px);
  bottom: clamp(14px, 1.8vw, 22px);
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 13px 18px 14px;
  border-radius: var(--r-md);
  border-left: 4px solid var(--bb-orange);
  background: rgba(17, 33, 60, .92);
  color: #fff;
}

.page-home .badge-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 3.2vw, 42px);
  line-height: 1;
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
}

.page-home .badge-plus {
  color: var(--bb-orange);
  margin-left: .08em;
}

.page-home .badge-label {
  font-size: 12.5px;
  color: #fff;
}

.page-home .badge-note {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--bb-on-dark-soft);
}

.page-home .collage-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  justify-content: space-between;
  min-height: 168px;
  padding: var(--hm-pad);
  border-radius: var(--r-lg);
}

.page-home .collage-stat--models {
  background: var(--bb-blue);
  color: #fff;
}

.page-home .collage-stat--cat {
  background: var(--bb-paper);
  border: 1px solid var(--bb-line-strong);
  color: var(--bb-ink);
}

.page-home .collage-stat--warranty {
  background: var(--bb-indigo);
  color: #fff;
}

.page-home .stat-code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  opacity: .62;
}

.page-home .collage-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(46px, 6.6vw, 80px);
  line-height: .88;
  letter-spacing: .01em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.page-home .collage-stat--models .collage-num {
  font-size: clamp(56px, 8.6vw, 108px);
}

.page-home .collage-num--ink {
  color: var(--bb-blue);
}

.page-home .collage-num--accent {
  color: var(--bb-orange);
}

.page-home .collage-num .num-suffix {
  font-size: .3em;
  margin-left: .2em;
  letter-spacing: .06em;
  vertical-align: .5em;
}

.page-home .collage-num .slash {
  font-size: .5em;
  margin: 0 .08em;
  opacity: .55;
}

.page-home .collage-stat__label {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(14px, 1.25vw, 16px);
  line-height: 1.5;
}

.page-home .collage-stat__note {
  margin: 0;
  max-width: 34ch;
  font-size: 12.5px;
  line-height: 1.75;
  opacity: .74;
}

@media (min-width: 920px) {
  .page-home .hero-collage {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-home .collage-lead {
    grid-column: 1 / 8;
    grid-row: 1;
  }

  .page-home .collage-visual {
    grid-column: 8 / 13;
    grid-row: 1 / 3;
  }

  .page-home .collage-stat--models {
    grid-column: 1 / 4;
    grid-row: 2;
  }

  .page-home .collage-stat--cat {
    grid-column: 4 / 6;
    grid-row: 2;
  }

  .page-home .collage-stat--warranty {
    grid-column: 6 / 8;
    grid-row: 2;
  }
}

/* ---------- 门类索引条 ---------- */
.page-home .rail-head {
  max-width: 68ch;
  margin-bottom: clamp(18px, 2.4vw, 28px);
}

.page-home .rail-head h2 {
  margin: 10px 0 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.24;
  color: var(--bb-ink);
}

.page-home .rail-lede {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(28, 31, 36, .72);
}

.page-home .rail-viewport {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  padding: 4px clamp(20px, 4vw, 64px) 20px;
  scrollbar-width: thin;
}

.page-home .rail-viewport:focus-visible {
  outline: 2px solid var(--bb-blue);
  outline-offset: -2px;
  border-radius: var(--r-md);
}

.page-home .rail-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: clamp(12px, 1.4vw, 18px);
  width: max-content;
}

.page-home .rail-track > li {
  flex: 0 0 auto;
  width: min(76vw, 272px);
  scroll-snap-align: start;
}

.page-home .rail-track > li > a {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  padding: clamp(18px, 2vw, 24px);
  border: 1px solid var(--bb-line-strong);
  border-radius: var(--r-lg);
  background: var(--bb-paper);
  color: var(--bb-ink);
  text-decoration: none;
  transition: transform .16s ease, border-color .16s ease, box-shadow .2s ease;
}

.page-home .rail-track > li > a:hover,
.page-home .rail-track > li > a:focus-visible {
  transform: translateY(-3px);
  border-color: var(--bb-blue);
  box-shadow: var(--shadow-soft);
}

.page-home .rail-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--bb-orange);
}

.page-home .rail-name {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.32;
}

.page-home .rail-range {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--bb-blue);
  font-variant-numeric: tabular-nums;
}

.page-home .rail-desc {
  font-size: 12.5px;
  line-height: 1.72;
  color: rgba(28, 31, 36, .66);
}

/* ---------- 质保口径锚点 ---------- */
.page-home .home-warranty {
  padding-block: clamp(44px, 6vw, 88px);
  background: var(--bb-indigo);
  color: #fff;
}

.page-home .kicker--on-dark {
  color: var(--bb-orange);
}

.page-home .warranty-top {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-home .warranty-copy h2 {
  margin: 10px 0 14px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(26px, 3.8vw, 44px);
  line-height: 1.22;
  color: #fff;
}

.page-home .warranty-copy p {
  margin: 0;
  max-width: 46ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--bb-on-dark);
}

.page-home .warranty-figure {
  margin: 0;
}

.page-home .warranty-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-md);
  border: 1px solid rgba(255, 255, 255, .16);
}

.page-home .warranty-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--bb-on-dark-soft);
}

.page-home .anchor-grid {
  display: grid;
  gap: clamp(14px, 2vw, 24px);
}

.page-home .anchor-block {
  padding: clamp(22px, 2.8vw, 38px);
  border-top: 3px solid var(--bb-orange);
  border-radius: 0 0 var(--r-md) var(--r-md);
  background: rgba(255, 255, 255, .05);
}

.page-home .anchor-num {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(78px, 12vw, 168px);
  line-height: .82;
  letter-spacing: .01em;
  color: var(--bb-orange);
  font-variant-numeric: tabular-nums;
}

.page-home .anchor-unit {
  margin-left: .18em;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(22px, 2.8vw, 38px);
  letter-spacing: .08em;
  color: var(--bb-orange);
}

.page-home .anchor-title {
  margin: clamp(10px, 1.4vw, 18px) 0 8px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(18px, 1.8vw, 22px);
  color: #fff;
}

.page-home .anchor-desc {
  margin: 0;
  max-width: 36ch;
  font-size: 13px;
  line-height: 1.8;
  color: var(--bb-on-dark-soft);
}

.page-home .warranty-notes {
  list-style: none;
  margin: clamp(26px, 3.4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-home .warranty-notes li {
  display: flex;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px dashed rgba(255, 255, 255, .22);
  font-size: 13px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .78);
}

.page-home .note-idx {
  flex: 0 0 22px;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border: 1px solid rgba(240, 90, 40, .55);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--bb-orange);
}

.page-home .warranty-cta {
  margin: clamp(24px, 3vw, 36px) 0 0;
}

@media (min-width: 720px) {
  .page-home .anchor-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-home .warranty-top {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
  }

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

/* ---------- 渠道对照 ---------- */
.page-home .compare-grid {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}

.page-home .compare-copy h2 {
  margin: 10px 0 14px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.24;
  color: var(--bb-ink);
}

.page-home .compare-copy p {
  margin: 0 0 20px;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(28, 31, 36, .78);
}

.page-home .compare-grid .table-wrap {
  border: 1px solid var(--bb-line);
  border-radius: var(--r-md);
  background: #fff;
}

@media (min-width: 900px) {
  .page-home .compare-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

/* ---------- 门店与授权维修点 ---------- */
.page-home .home-network {
  padding-block: clamp(44px, 6vw, 88px);
  background: var(--bb-teal);
  color: #fff;
}

.page-home .network-head {
  max-width: 62ch;
}

.page-home .network-head h2 {
  margin: 10px 0 14px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(26px, 3.8vw, 44px);
  line-height: 1.22;
  color: #fff;
}

.page-home .network-head p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .8);
}

.page-home .network-figure {
  margin: clamp(24px, 3vw, 40px) 0 0;
}

.page-home .network-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  border: 1px solid rgba(255, 255, 255, .18);
}

.page-home .network-tiers {
  display: grid;
  gap: 1px;
  margin-top: clamp(24px, 3vw, 40px);
  border-radius: var(--r-md);
  overflow: hidden;
  background: rgba(255, 255, 255, .18);
}

.page-home .tier {
  padding: clamp(18px, 2.2vw, 28px);
  background: var(--bb-teal);
}

.page-home .tier-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--bb-yellow);
}

.page-home .tier h3 {
  margin: 8px 0 6px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 17px;
  color: #fff;
}

.page-home .tier p {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .76);
}

.page-home .network-cta {
  margin: clamp(24px, 3vw, 34px) 0 0;
}

@media (min-width: 760px) {
  .page-home .network-tiers {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 校订记录 ---------- */
.page-home .log-grid {
  display: grid;
  gap: clamp(26px, 3.4vw, 48px);
}

.page-home .log-intro h2 {
  margin: 10px 0 14px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.24;
  color: var(--bb-ink);
}

.page-home .log-intro > p {
  margin: 0;
  max-width: 44ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(28, 31, 36, .76);
}

.page-home .log-figure {
  margin: clamp(20px, 2.6vw, 30px) 0 0;
}

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

.page-home .log-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: rgba(28, 31, 36, .55);
}

.page-home .log-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 34px;
}

.page-home .log-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: var(--bb-line-strong);
}

.page-home .log-item {
  position: relative;
  margin-bottom: 12px;
}

.page-home .log-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 15px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bb-paper);
  border: 2px solid var(--bb-blue);
}

.page-home .log-item summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border: 1px solid var(--bb-line);
  border-radius: var(--r-md);
  background: #fff;
  cursor: pointer;
  list-style: none;
  transition: border-color .16s ease, background .16s ease;
}

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

.page-home .log-item summary:hover {
  border-color: var(--bb-blue);
}

.page-home .log-item summary:focus-visible {
  outline: 2px solid var(--bb-blue);
  outline-offset: 2px;
}

.page-home .log-item[open] summary {
  border-color: var(--bb-orange);
  background: rgba(243, 194, 78, .14);
}

.page-home .log-date {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--bb-blue);
}

.page-home .log-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 16px;
  color: var(--bb-ink);
}

.page-home .log-arrow {
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--bb-ink);
  border-bottom: 2px solid var(--bb-ink);
  transform: rotate(45deg);
  opacity: .5;
  transition: transform .18s ease;
}

.page-home .log-item[open] .log-arrow {
  transform: rotate(225deg);
}

.page-home .log-body {
  padding: 12px 18px 4px;
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(28, 31, 36, .76);
}

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

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

@media (min-width: 920px) {
  .page-home .log-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

@media (max-width: 720px) {
  .page-home .page-context__meta {
    margin-left: 0;
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .rail-track > li > a,
  .page-home .log-arrow,
  .page-home .log-item summary {
    transition: none;
  }

  .page-home .rail-track > li > a:hover,
  .page-home .rail-track > li > a:focus-visible {
    transform: none;
  }
}