/* ===================================================
   首页 · page-home
   =================================================== */

.page-home {
  display: block;
  color: var(--char);
}

.page-home .mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 开篇 ---------- */
.page-home .ph-open {
  padding: var(--s4) 0 var(--s3);
  border-bottom: 1px solid var(--rule);
}

.page-home .ph-open__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s2);
}

.page-home .ph-open__aside {
  display: flex;
  align-items: baseline;
  gap: var(--s2);
}

.page-home .ph-open__no {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--accent-deep);
}

.page-home .ph-open__label {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--char-mute);
}

.page-home .ph-open__title {
  margin: var(--s1) 0 0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.85rem, 7.2vw, 3.8rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--ink);
  max-width: 20ch;
}

.page-home .ph-open .lede {
  margin: var(--s3) 0 0;
  max-width: 48ch;
  font-size: 1rem;
  line-height: 1.95;
  color: var(--char-soft);
}

.page-home .ph-quick {
  list-style: none;
  margin: var(--s4) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--rule);
}

.page-home .ph-quick__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--s2) 0 var(--s2) var(--s2);
  border-bottom: 1px solid var(--rule);
  border-left: 3px solid transparent;
  transition: border-color .32s var(--ease), background-color .32s var(--ease);
}

.page-home .ph-quick__item:hover {
  border-left-color: var(--celadon);
  background: var(--paper-2);
}

.page-home .ph-quick__k {
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--ember);
}

.page-home .ph-quick__link {
  font-family: var(--serif);
  font-size: 1.06rem;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .32s var(--ease);
}

.page-home .ph-quick__link:hover,
.page-home .ph-quick__link:focus-visible {
  border-bottom-color: var(--ink);
}

.page-home .ph-quick__d {
  font-size: .82rem;
  line-height: 1.7;
  color: var(--char-mute);
}

/* ---------- 四季时序轴 ---------- */
.page-home .ph-axis {
  position: relative;
  padding: var(--s4) 0;
  overflow: hidden;
  border-bottom: 1px solid var(--rule);
}

.page-home .ph-axis__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-home .ph-axis__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .15;
  filter: saturate(.75);
}

.page-home .ph-axis > .wrap {
  position: relative;
  z-index: 1;
}

.page-home .ph-axis__head {
  max-width: 34rem;
}

.page-home .ph-axis__no {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--accent-deep);
}

.page-home .ph-axis__title {
  margin: var(--s1) 0;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 4.4vw, 2.25rem);
  line-height: 1.25;
  color: var(--ink);
}

.page-home .ph-axis__lede {
  margin: 0;
  line-height: 1.9;
  color: var(--char-soft);
  max-width: 40ch;
}

.page-home .ph-tabs {
  margin-top: var(--s3);
}

.page-home .ph-tabs__list {
  display: flex;
  gap: 2px;
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: thin;
}

.page-home .ph-tab {
  flex: 1 0 auto;
  min-width: 92px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  padding: 14px 14px 12px;
  border: 0;
  border-top: 3px solid var(--accent);
  background: rgba(247, 243, 234, .86);
  color: var(--char);
  font-family: var(--sans);
  text-align: left;
  cursor: pointer;
  transition: background-color .32s var(--ease), color .32s var(--ease), border-color .32s var(--ease);
}

.page-home .ph-tab:hover {
  background: var(--paper-2);
}

.page-home .ph-tab:focus-visible {
  outline: 2px solid var(--accent-deep);
  outline-offset: 2px;
}

.page-home .ph-tab[aria-selected="true"] {
  background: var(--ink);
  color: var(--frost);
  border-top-color: var(--accent-2);
}

.page-home .ph-tab__season {
  font-family: var(--serif);
  font-size: 1.35rem;
  line-height: 1;
  letter-spacing: .08em;
}

.page-home .ph-tab__topic {
  font-size: .74rem;
  letter-spacing: .1em;
  opacity: .7;
}

.page-home .ph-panel {
  padding-top: var(--s3);
}

.page-home .ph-panel__axis {
  border-left: 2px solid var(--accent);
  padding-left: var(--s3);
  max-width: 46rem;
}

.page-home .ph-panel__kicker {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--accent-deep);
}

.page-home .ph-panel__title {
  margin: 0 0 var(--s2);
  font-family: var(--serif);
  font-size: clamp(1.2rem, 3.6vw, 1.75rem);
  line-height: 1.35;
  color: var(--ink);
}

.page-home .ph-panel__axis p {
  margin: 0 0 10px;
  line-height: 1.95;
  color: var(--char-soft);
  max-width: 44ch;
}

/* ---------- 城市开放索引 ---------- */
.page-home .ph-city {
  padding: var(--s4) 0;
  background: var(--paper-2);
  border-bottom: 1px solid var(--rule);
}

.page-home .ph-city__head {
  max-width: 36rem;
  margin-bottom: var(--s3);
}

.page-home .ph-city__no {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--deep-sea);
}

.page-home .ph-city__title {
  margin: var(--s1) 0;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 4.4vw, 2.25rem);
  line-height: 1.25;
  color: var(--ink);
}

.page-home .ph-city__lede {
  margin: 0;
  line-height: 1.9;
  color: var(--char-soft);
}

.page-home .ph-city__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s2);
}

.page-home .ph-city__item {
  padding: var(--s3);
  background: var(--paper);
  border-top: 3px solid var(--accent);
}

.page-home .ph-city__region {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.5rem;
  letter-spacing: .08em;
  color: var(--ink);
}

.page-home .ph-city__count {
  margin: 8px 0 var(--s1);
  font-size: .88rem;
  color: var(--char-mute);
}

.page-home .ph-city__count .mono {
  margin-right: 6px;
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--accent-deep);
}

.page-home .ph-city__desc {
  margin: 0;
  font-size: .86rem;
  line-height: 1.8;
  color: var(--char-mute);
}

.page-home .ph-city__figure {
  margin: var(--s4) 0 0;
}

.page-home .ph-city__more {
  margin: var(--s3) 0 0;
}

/* ---------- 三条合作路径 ---------- */
.page-home .ph-path {
  padding: var(--s4) 0;
  border-bottom: 1px solid var(--rule);
}

.page-home .ph-path__head {
  max-width: 36rem;
}

.page-home .ph-path__no {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--accent-deep);
}

.page-home .ph-path__title {
  margin: var(--s1) 0;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 4.4vw, 2.25rem);
  line-height: 1.25;
  color: var(--ink);
}

.page-home .ph-path__lede {
  margin: 0;
  line-height: 1.9;
  color: var(--char-soft);
}

.page-home .ph-path__list {
  list-style: none;
  margin: var(--s3) 0 0;
  padding: 0;
}

.page-home .ph-path__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s1);
  padding: var(--s3) 0;
  border-top: 1px solid var(--rule);
}

.page-home .ph-path__row:last-child {
  border-bottom: 1px solid var(--rule);
}

.page-home .ph-path__idx {
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--accent-deep);
}

.page-home .ph-path__name {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: clamp(1.2rem, 3.4vw, 1.65rem);
  line-height: 1.3;
  color: var(--ink);
}

.page-home .ph-path__fit {
  margin: 0;
  font-size: .86rem;
  line-height: 1.75;
  color: var(--char-mute);
}

.page-home .ph-path__fitk {
  display: inline-block;
  margin-right: 6px;
  padding: 1px 8px;
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--paper);
  background: var(--accent-deep);
}

.page-home .ph-path__detail p {
  margin: 0 0 10px;
  line-height: 1.95;
  color: var(--char-soft);
  max-width: 42ch;
}

.page-home .ph-path__fact {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--accent-deep);
}

/* ---------- 流程与交付节奏 ---------- */
.page-home .ph-flow {
  padding: var(--s4) 0;
  border-bottom: 1px solid var(--rule);
}

.page-home .ph-flow__head {
  max-width: 36rem;
}

.page-home .ph-flow__no {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--accent-deep);
}

.page-home .ph-flow__title {
  margin: var(--s1) 0;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 4.4vw, 2.25rem);
  line-height: 1.25;
  color: var(--ink);
}

.page-home .ph-flow__lede {
  margin: 0;
  line-height: 1.9;
  color: var(--char-soft);
}

.page-home .ph-flow__steps {
  list-style: none;
  margin: var(--s3) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s3);
}

.page-home .ph-flow__step {
  position: relative;
  padding-top: var(--s3);
  border-top: 2px solid var(--accent);
}

.page-home .ph-flow__step::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
}

.page-home .ph-flow__stepno {
  margin: 0 0 6px;
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--accent-deep);
}

.page-home .ph-flow__steptitle {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--ink);
}

.page-home .ph-flow__step p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--char-soft);
}

.page-home .ph-flow__figure {
  margin: var(--s4) 0 0;
}

.page-home .ph-deliver {
  margin-top: var(--s4);
  display: grid;
  gap: var(--s3);
}

.page-home .ph-deliver__title {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.2rem;
  color: var(--ink);
}

.page-home .ph-deliver__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s2);
  padding: var(--s3);
  background: var(--paper-2);
  border-left: 3px solid var(--accent);
}

.page-home .ph-deliver__name {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.1rem;
  color: var(--ink);
}

.page-home .ph-deliver__len {
  margin: 4px 0 0;
  font-size: .9rem;
  letter-spacing: .06em;
  color: var(--accent-deep);
}

.page-home .ph-deliver__ticks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
}

.page-home .ph-deliver__tick {
  position: relative;
  padding-top: 24px;
  font-size: .76rem;
  line-height: 1.5;
  color: var(--char-mute);
}

.page-home .ph-deliver__tick::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--accent);
}

.page-home .ph-deliver__tick::after {
  content: "";
  position: absolute;
  top: 6px;
  left: 14px;
  right: 0;
  height: 1px;
  background: var(--accent);
  opacity: .4;
}

.page-home .ph-deliver__tick:last-child::after {
  display: none;
}

.page-home .ph-deliver__tick .mono {
  display: block;
  font-size: .95rem;
  font-weight: 700;
  color: var(--accent-deep);
  letter-spacing: .06em;
}

.page-home .ph-deliver__figure {
  margin: 0;
}

.page-home .ph-flow__more {
  margin: var(--s2) 0 0;
}

/* ---------- 结尾行动指引 ---------- */
.page-home .ph-cta {
  position: relative;
  padding: var(--s4) 0 calc(var(--s4) + var(--s1));
  background: var(--ink);
  color: var(--frost);
  overflow: hidden;
}

.page-home .ph-cta::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--celadon) 0%, var(--sprout) 26%, var(--ember) 50%, var(--maple) 72%, var(--frost) 88%, var(--ink-blue) 100%);
}

.page-home .ph-cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s3);
}

.page-home .ph-cta__title {
  margin: 0 0 var(--s2);
  font-family: var(--serif);
  font-size: clamp(1.5rem, 5vw, 2.4rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
  max-width: 18ch;
}

.page-home .ph-cta__text {
  margin: 0;
  max-width: 44ch;
  line-height: 1.95;
  color: rgba(228, 232, 236, .84);
}

.page-home .ph-cta__row {
  align-self: end;
}

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

  .page-home .ph-open {
    padding: var(--s5) 0 var(--s4);
  }

  .page-home .ph-axis,
  .page-home .ph-city,
  .page-home .ph-path,
  .page-home .ph-flow {
    padding: var(--s5) 0;
  }

  .page-home .ph-flow__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--s3);
  }

  .page-home .ph-deliver__row {
    grid-template-columns: 190px minmax(0, 1fr);
    align-items: center;
    gap: var(--s3);
  }
}

/* ---------- 宽屏 ---------- */
@media (min-width: 900px) {
  .page-home .ph-open__inner {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: var(--s4);
  }

  .page-home .ph-open__aside {
    display: block;
  }

  .page-home .ph-open__label {
    display: block;
    margin-top: 6px;
  }

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

  .page-home .ph-quick__item {
    border-bottom: 0;
    border-right: 1px solid var(--rule);
    padding-right: var(--s2);
  }

  .page-home .ph-quick__item:last-child {
    border-right: 0;
  }

  .page-home .ph-path__row {
    grid-template-columns: 84px minmax(0, 1fr) minmax(0, 1.15fr);
    gap: var(--s3);
    align-items: start;
    padding: var(--s4) 0;
  }

  .page-home .ph-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: var(--s4);
  }
}

/* ---------- 大屏错位网格 ---------- */
@media (min-width: 1080px) {
  .page-home .ph-city__list {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--s2);
  }

  .page-home .ph-city__item {
    grid-column: span 4;
  }

  .page-home .ph-city__item--lead {
    grid-column: span 5;
  }

  .page-home .ph-city__item--mid {
    grid-column: span 4;
  }

  .page-home .ph-city__item--slim {
    grid-column: span 3;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-home .ph-quick__item,
  .page-home .ph-quick__link,
  .page-home .ph-tab {
    transition: none;
  }
}