.page-home {
  --home-row: clamp(44px, 6vw, 92px);
}

.page-home .section {
  padding-block: var(--home-row);
}

.page-home .section--flush {
  padding-top: clamp(24px, 3vw, 48px);
}

/* ── 页面上下文 ── */
.page-home .home-context {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .55rem;
  margin: 0 0 clamp(20px, 3vw, 38px);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--scale);
}

.page-home .home-context__mark {
  color: var(--ink);
  font-weight: 700;
  letter-spacing: .3em;
}

.page-home .home-context__sep {
  color: var(--summer);
}

/* ── 拼贴首屏 ── */
.page-home .collage {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  align-items: start;
}

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

.page-home .collage__title {
  margin: .3em 0 .55em;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.95rem, 8vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -.012em;
  color: var(--ink);
  max-width: 17ch;
}

.page-home .collage__lede {
  margin: 0 0 clamp(20px, 2.6vw, 32px);
  font-size: clamp(.95rem, .55vw + .82rem, 1.08rem);
  line-height: 1.78;
  color: var(--ink);
  max-width: 48ch;
}

.page-home .collage__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
}

/* 四季色带 */
.page-home .collage__strip {
  display: flex;
  flex-direction: row;
  height: 4px;
  border-radius: 2px;
  overflow: hidden;
  align-self: stretch;
}

.page-home .strip-seg {
  flex: 1 1 0;
  min-width: 0;
  min-height: 0;
}

.page-home .strip-seg--spring { background: var(--spring); }
.page-home .strip-seg--summer { background: var(--summer); }
.page-home .strip-seg--autumn { background: var(--autumn); }
.page-home .strip-seg--winter { background: var(--winter); }

@media (prefers-reduced-motion: no-preference) {
  .page-home .strip-seg {
    animation: home-strip-breathe 8s var(--ease) infinite alternate;
  }
  .page-home .strip-seg--summer { animation-delay: -2s; }
  .page-home .strip-seg--autumn { animation-delay: -4s; }
  .page-home .strip-seg--winter { animation-delay: -6s; }
}

@keyframes home-strip-breathe {
  from { opacity: .7; }
  to { opacity: 1; }
}

/* 首屏图片 */
.page-home .collage__figure {
  margin: 0;
}

.page-home .collage__figure .figure__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--line);
}

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

.page-home .collage__figure .figure__caption {
  margin-top: .7rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .08em;
  color: var(--scale);
}

/* 首屏数字条 */
.page-home .collage__facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-home .fact {
  background: var(--card);
  padding: clamp(12px, 1.8vw, 20px) clamp(12px, 1.6vw, 20px);
  min-width: 0;
}

.page-home .fact__label {
  margin: 0 0 .5em;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--scale);
}

.page-home .fact__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.1rem, 1.6vw + .7rem, 1.65rem);
  font-weight: 600;
  line-height: 1.05;
  color: var(--ink);
  letter-spacing: -.01em;
}

.page-home .fact__unit {
  margin-left: .18em;
  font-size: .62em;
  font-weight: 400;
  color: var(--scale);
}

/* ── 机型网格 ── */
.page-home .model-banner {
  margin: 0 0 clamp(20px, 2.6vw, 34px);
}

.page-home .model-banner .figure__media {
  aspect-ratio: 15 / 4;
  overflow: hidden;
  background: var(--line);
}

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

.page-home .model-banner .figure__caption,
.page-home .nodes-figure .figure__caption {
  margin-top: .6rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .06em;
  color: var(--scale);
}

.page-home .model-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.page-home .model-cell {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: .8rem;
  min-height: 96px;
  padding: clamp(14px, 2vw, 24px) clamp(12px, 1.6vw, 22px) clamp(12px, 1.6vw, 18px) clamp(16px, 2.2vw, 26px);
  background: var(--card);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background var(--dur) var(--ease);
}

.page-home .model-cell::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--line);
  transition: width var(--dur) var(--ease);
}

.page-home .model-cell[data-season="spring"]::before { background: var(--spring); }
.page-home .model-cell[data-season="summer"]::before { background: var(--summer); }
.page-home .model-cell[data-season="autumn"]::before { background: var(--autumn); }
.page-home .model-cell[data-season="winter"]::before { background: var(--winter); }

.page-home .model-cell__num {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 1.6vw + .9rem, 2rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-home .model-cell__line {
  align-self: flex-start;
  padding: .2em .6em;
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .1em;
  color: var(--scale);
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-home .model-more {
  margin: clamp(20px, 2.6vw, 32px) 0 0;
}

/* ── 年份刻度 ── */
.page-home .year-chron {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.4vw, 48px);
  align-items: start;
}

.page-home .year-chron__figure {
  margin: 0;
}

.page-home .year-chron__figure .figure__media {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--line);
}

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

.page-home .year-chron__figure .figure__caption {
  margin-top: .7rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .06em;
  color: var(--scale);
}

.page-home .year-rail {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: clamp(20px, 2.6vw, 34px);
}

.page-home .year-rail::before {
  content: "";
  position: absolute;
  left: 0;
  top: .5em;
  bottom: .5em;
  width: 1px;
  background: var(--line);
}

.page-home .year-rail__item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: .4rem;
  padding-left: clamp(18px, 2.4vw, 34px);
}

.page-home .year-rail__item::before {
  content: "";
  position: absolute;
  left: -3.5px;
  top: .5em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--card);
  border: 1px solid var(--ink);
}

.page-home .year-rail__item:nth-child(2)::before { border-color: var(--spring); }
.page-home .year-rail__item:nth-child(3)::before { border-color: var(--summer); }
.page-home .year-rail__item:nth-child(4)::before { border-color: var(--autumn); }

.page-home .year-rail__year {
  font-family: var(--font-mono);
  font-size: clamp(1.55rem, 3vw + .5rem, 2.5rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: .01em;
  color: var(--ink);
}

.page-home .year-rail__title {
  margin: 0 0 .4em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(.98rem, .5vw + .85rem, 1.18rem);
  line-height: 1.4;
  color: var(--ink);
}

.page-home .year-rail__text {
  margin: 0;
  font-size: .92rem;
  line-height: 1.72;
  color: var(--scale);
  max-width: 46ch;
}

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

/* ── 双线对照 ── */
.page-home .lane-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.4vw, 32px);
  align-items: start;
}

.page-home .lane {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 0;
  padding: clamp(22px, 2.8vw, 38px);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
}

.page-home .lane::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
}

.page-home .lane--channel::before {
  background: linear-gradient(90deg, var(--spring), var(--summer));
}

.page-home .lane--retail::before {
  background: linear-gradient(90deg, var(--autumn), var(--winter));
}

.page-home .lane__index {
  display: block;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--scale);
}

.page-home .lane__title {
  margin: .35em 0 .25em;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 1.8vw + .7rem, 2rem);
  line-height: 1.06;
  color: var(--ink);
}

.page-home .lane__count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--scale);
}

.page-home .lane__count strong {
  margin-right: .15em;
  font-size: 1.4em;
  color: var(--summer);
}

.page-home .lane__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .75rem;
}

.page-home .lane__list li {
  position: relative;
  padding-left: 1.2rem;
  font-size: .92rem;
  line-height: 1.68;
  color: var(--ink);
}

.page-home .lane__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .7em;
  width: .6rem;
  height: 1px;
  background: var(--scale);
}

.page-home .lane__foot {
  margin-top: auto;
  padding-top: .9rem;
}

/* ── 服务节点 ── */
.page-home .nodes {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.2vw, 30px);
}

.page-home .node {
  display: flex;
  flex-direction: column;
  gap: .45rem;
  min-width: 0;
  padding-top: 1rem;
  border-top: 2px solid var(--line);
}

.page-home .node--beijing { border-top-color: var(--summer); }
.page-home .node--hangzhou { border-top-color: var(--spring); }
.page-home .node--chengdu { border-top-color: var(--autumn); }

.page-home .node__mark {
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .22em;
  color: var(--scale);
}

.page-home .node__city {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.25rem, 1.4vw + .8rem, 1.7rem);
  line-height: 1.05;
  color: var(--ink);
}

.page-home .node__role {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--summer);
}

.page-home .node__text {
  margin: .2rem 0 0;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--scale);
}

.page-home .nodes-figure {
  margin: clamp(24px, 3.2vw, 44px) 0 0;
}

.page-home .nodes-figure .figure__media {
  aspect-ratio: 16 / 7;
  overflow: hidden;
  background: var(--line);
}

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

/* ── 联系区块 ── */
.page-home .contact-block {
  position: relative;
  overflow: hidden;
  margin-top: clamp(26px, 3.4vw, 48px);
  padding: clamp(24px, 3.6vw, 52px);
  padding-right: clamp(32px, 4.4vw, 68px);
  background: var(--green-deep);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 42px);
  align-items: start;
  border-radius: 2px;
}

.page-home .contact-block::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 5px;
  background: linear-gradient(180deg, var(--spring), var(--summer), var(--autumn), var(--winter));
  opacity: .9;
}

.page-home .contact-block__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--spring);
}

.page-home .contact-block__title {
  margin: .35em 0 .55em;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 2vw + .7rem, 2.05rem);
  line-height: 1.1;
  color: var(--paper);
}

.page-home .contact-block__text {
  margin: 0;
  max-width: 48ch;
  font-size: .93rem;
  line-height: 1.78;
  color: rgba(247, 245, 240, .84);
}

.page-home .contact-block__meta {
  display: grid;
  gap: 0;
  min-width: 0;
}

.page-home .contact-row {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: .75rem;
  align-items: baseline;
  padding-bottom: .85rem;
  margin-bottom: .85rem;
  border-bottom: 1px solid rgba(247, 245, 240, .16);
}

.page-home .contact-row:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.page-home .contact-row__label {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--spring);
}

.page-home .contact-row__value {
  min-width: 0;
  font-family: var(--font-mono);
  font-size: .88rem;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-home .contact-more {
  margin: clamp(20px, 2.6vw, 32px) 0 0;
}

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

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

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

@media (min-width: 900px) {
  .page-home .collage {
    grid-template-columns: repeat(12, 1fr);
    column-gap: clamp(14px, 1.6vw, 26px);
    row-gap: clamp(24px, 3vw, 42px);
  }

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

  .page-home .collage__strip {
    grid-column: 8 / 9;
    grid-row: 1 / 3;
    flex-direction: column;
    height: auto;
    width: 100%;
    min-height: 100%;
    border-radius: 0;
    align-self: stretch;
  }

  .page-home .collage__figure {
    grid-column: 9 / 13;
    grid-row: 1 / 3;
    align-self: stretch;
  }

  .page-home .collage__figure .figure__media {
    aspect-ratio: 2 / 3;
  }

  .page-home .collage__facts {
    grid-column: 1 / 8;
    grid-row: 2;
  }

  .page-home .model-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-home .year-chron {
    grid-template-columns: 5fr 7fr;
    gap: clamp(28px, 3.6vw, 56px);
  }

  .page-home .year-chron__figure {
    position: sticky;
    top: calc(var(--topbar-h) + 24px);
  }

  .page-home .year-rail__item {
    grid-template-columns: 6rem 1fr;
    align-items: baseline;
    column-gap: clamp(12px, 2vw, 28px);
  }

  .page-home .year-rail__item::before {
    top: .9em;
  }

  .page-home .lane-split {
    grid-template-columns: 7fr 5fr;
    gap: clamp(20px, 2.6vw, 36px);
  }

  .page-home .nodes {
    grid-template-columns: 5fr 4fr 3fr;
    gap: clamp(20px, 2.6vw, 40px);
  }

  .page-home .contact-block {
    grid-template-columns: 7fr 5fr;
    gap: clamp(28px, 3.6vw, 56px);
  }

  .page-home .contact-row {
    grid-template-columns: 5.5rem 1fr;
  }
}

@media (min-width: 1200px) {
  .page-home .collage__title {
    font-size: clamp(3rem, 3.6vw + 1rem, 4.6rem);
  }
}

/* ── 悬停与焦点 ── */
@media (hover: hover) and (pointer: fine) {
  .page-home .model-cell:hover {
    background: var(--paper);
  }

  .page-home .model-cell:hover::before {
    width: 5px;
  }

  .page-home .model-cell:hover .model-cell__line {
    color: var(--ink);
    border-color: var(--ink);
  }

  .page-home .lane:hover {
    border-color: var(--ink);
  }
}

.page-home .model-cell:focus-within {
  background: var(--paper);
  outline: 2px solid var(--summer);
  outline-offset: -2px;
}

@media (prefers-reduced-motion: reduce) {
  .page-home .model-cell,
  .page-home .model-cell::before,
  .page-home .model-cell__line,
  .page-home .strip-seg {
    transition: none;
    animation: none;
  }
}