.page-home {
  --ph-shadow: 6px 6px 0 var(--ink);
  --ph-shadow-sm: 3px 3px 0 var(--ink);
  display: block;
  background: var(--paper);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-home .page-home__crumbs {
  background: var(--paper);
  border-bottom: 1px solid rgba(20, 22, 26, .12);
}

.page-home .page-home__crumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 12px 0;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-home .page-home__crumb-current {
  font-family: var(--font-mono);
  color: var(--ink);
  letter-spacing: .02em;
}

/* ---------- 索引轨道 ---------- */
.page-home .page-home__rail {
  display: none;
}

.page-home .page-home__rail-link {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--muted);
  text-decoration: none;
  padding: 6px 10px;
  border-left: 3px solid transparent;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-home .page-home__rail-link:hover {
  color: var(--ink);
  background: var(--panel);
}

.page-home .page-home__rail-link[aria-current="true"] {
  color: var(--ink);
  background: var(--hl);
  border-left-color: var(--summer);
  font-weight: 700;
}

@media (min-width: 1440px) {
  .page-home .page-home__rail {
    display: flex;
    flex-direction: column;
    gap: 2px;
    position: fixed;
    left: 26px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    padding: 10px 6px;
    background: var(--paper);
    border: var(--line);
    box-shadow: var(--ph-shadow);
  }
}

/* ---------- 首屏 ---------- */
.page-home .page-home__hero {
  position: relative;
  isolation: isolate;
  padding: clamp(30px, 5vw, 66px) 0 clamp(44px, 7vw, 96px);
  background-color: var(--paper);
  background-image: linear-gradient(
    135deg,
    rgba(15, 110, 92, .10) 0%,
    rgba(194, 65, 12, .07) 34%,
    rgba(161, 98, 7, .08) 64%,
    rgba(30, 58, 138, .11) 100%
  );
  overflow: hidden;
}

.page-home .page-home__hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -14%;
  right: -9%;
  width: min(58%, 720px);
  height: 128%;
  background: var(--ink);
  clip-path: polygon(24% 0, 100% 0, 100% 100%, 0 100%);
}

.page-home .page-home__hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: end;
}

.page-home .page-home__hero-copy {
  max-width: 640px;
}

.page-home .page-home__title {
  margin: 14px 0 0;
  font-size: clamp(36px, 7.4vw, 82px);
  line-height: 1.04;
  letter-spacing: -.02em;
  font-weight: 900;
  color: var(--ink);
}

.page-home .page-home__title-em {
  display: inline-block;
  background: linear-gradient(transparent 60%, var(--hl) 60%);
}

.page-home .page-home__lead {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 36em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--ink);
}

.page-home .page-home__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-home .page-home__hero-facts {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: clamp(16px, 2.4vw, 22px) 0 0;
  border-top: var(--line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 20px;
}

.page-home .page-home__hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-home .page-home__hero-facts b {
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 700;
  color: var(--spring);
  letter-spacing: .01em;
}

.page-home .page-home__hero-facts span {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-home .page-home__hero-visual {
  margin: 0;
  border: var(--line);
  box-shadow: var(--ph-shadow);
  background: var(--panel);
}

.page-home .page-home__hero-img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.page-home .page-home__caption {
  display: block;
  padding: 10px 14px;
  border-top: var(--line);
  background: var(--paper);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

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

@media (min-width: 900px) {
  .page-home .page-home__hero-grid {
    grid-template-columns: 7fr 5fr;
    gap: clamp(32px, 5vw, 72px);
  }
}

/* ---------- 四季色索引 ---------- */
.page-home .page-home__seasons {
  padding: var(--rhythm) 0;
  background: var(--paper);
  border-top: var(--line);
}

.page-home .page-home__seasons-head {
  max-width: 46em;
}

.page-home .page-home__season-list {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  border-top: var(--line);
}

.page-home .page-home__season-item {
  --sc: var(--ink);
  display: grid;
  gap: 8px;
  padding: 20px 16px 20px 18px;
  border-bottom: var(--line-thin);
  border-left: 5px solid var(--sc);
  background: var(--ph-tint, var(--paper));
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-home .page-home__season-item:hover {
  transform: translateX(4px);
  box-shadow: var(--ph-shadow-sm);
}

.page-home .page-home__season-item[data-season="spring"] {
  --sc: var(--spring);
  --ph-tint: rgba(15, 110, 92, .06);
}

.page-home .page-home__season-item[data-season="summer"] {
  --sc: var(--summer);
  --ph-tint: rgba(194, 65, 12, .06);
}

.page-home .page-home__season-item[data-season="autumn"] {
  --sc: var(--autumn);
  --ph-tint: rgba(161, 98, 7, .06);
}

.page-home .page-home__season-item[data-season="winter"] {
  --sc: var(--winter);
  --ph-tint: rgba(30, 58, 138, .06);
}

.page-home .page-home__season-num {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--sc);
}

.page-home .page-home__season-tag {
  font-weight: 900;
  font-size: clamp(17px, 1.8vw, 21px);
  letter-spacing: -.01em;
  color: var(--sc);
}

.page-home .page-home__season-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-home .page-home__season-link {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--sc);
  padding-bottom: 2px;
}

.page-home .page-home__season-link:hover {
  color: var(--sc);
}

@media (min-width: 820px) {
  .page-home .page-home__season-item {
    grid-template-columns: 56px 210px 1fr 130px;
    align-items: center;
    gap: 20px;
    padding: 24px 20px;
  }

  .page-home .page-home__season-link {
    justify-self: end;
  }
}

/* ---------- 三档方案 ---------- */
.page-home .page-home__tiers {
  padding: var(--rhythm) 0;
  background: var(--panel);
  border-top: var(--line);
  border-bottom: var(--line);
}

.page-home .page-home__tiers-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
  align-items: end;
}

.page-home .page-home__tier-visual {
  margin: 0;
  border: var(--line);
  box-shadow: var(--ph-shadow);
  background: var(--paper);
}

.page-home .page-home__tier-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-home .page-home__filter-bar {
  margin-top: clamp(26px, 4vw, 40px);
}

.page-home .page-home__tier-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.4vw, 26px);
  margin-top: clamp(18px, 2.6vw, 26px);
}

.page-home .page-home__tier-card {
  --sc: var(--ink);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 20px 24px;
  background: var(--paper);
  border: var(--line);
  box-shadow: var(--ph-shadow);
}

.page-home .page-home__tier-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: var(--sc);
}

.page-home .page-home__tier-card[data-season="spring"] { --sc: var(--spring); }
.page-home .page-home__tier-card[data-season="summer"] { --sc: var(--summer); }
.page-home .page-home__tier-card[data-season="autumn"] { --sc: var(--autumn); }

.page-home .page-home__tier-code {
  margin: 0;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--sc);
  word-break: break-word;
}

.page-home .page-home__tier-name {
  margin: 0;
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-home .page-home__tier-list {
  margin: 0;
  padding: 14px 0 0;
  border-top: var(--line-thin);
  display: grid;
  gap: 8px;
}

.page-home .page-home__tier-list > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-home .page-home__tier-list dt {
  font-size: 13px;
  color: var(--muted);
}

.page-home .page-home__tier-list dd {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.page-home .page-home__tier-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-home .page-home__tier-link {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--sc);
  padding-bottom: 2px;
}

.page-home .page-home__tier-link:hover {
  color: var(--sc);
}

.page-home .page-home__filter-empty {
  margin: 18px 0 0;
}

.page-home .page-home__tier-foot {
  margin: clamp(24px, 3vw, 34px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-home .page-home__tier-foot a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--summer);
}

.page-home .page-home__tier-foot a:hover {
  color: var(--summer);
}

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

@media (min-width: 900px) {
  .page-home .page-home__tiers-head {
    grid-template-columns: 7fr 5fr;
  }
}

/* ---------- 网点与服务中心 ---------- */
.page-home .page-home__network {
  padding: var(--rhythm) 0;
  background: var(--paper);
}

.page-home .page-home__net-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 44px);
  align-items: start;
}

.page-home .page-home__net-cta {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
}

.page-home .page-home__net-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  background: var(--ink);
  border: var(--line);
  box-shadow: var(--ph-shadow);
}

.page-home .page-home__net-stat {
  background: var(--paper);
  padding: clamp(18px, 2.4vw, 26px) clamp(14px, 1.8vw, 20px);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-home .page-home__net-value {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
  letter-spacing: -.01em;
}

.page-home .page-home__net-stat:nth-child(1) .page-home__net-value { color: var(--spring); }
.page-home .page-home__net-stat:nth-child(2) .page-home__net-value { color: var(--summer); }
.page-home .page-home__net-stat:nth-child(3) .page-home__net-value { color: var(--autumn); }
.page-home .page-home__net-stat:nth-child(4) .page-home__net-value { color: var(--winter); }

.page-home .page-home__net-label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

@media (min-width: 900px) {
  .page-home .page-home__net-grid {
    grid-template-columns: 3fr 9fr;
  }
}

/* ---------- 安装与报修流程 ---------- */
.page-home .page-home__process {
  padding: var(--rhythm) 0;
  background: var(--panel);
  border-top: var(--line);
}

.page-home .page-home__process-head {
  max-width: 44em;
}

.page-home .page-home__steps {
  margin-top: clamp(26px, 4vw, 42px);
  border-top: var(--line);
}

.page-home .page-home__step {
  border-bottom: var(--line-thin);
  background: var(--paper);
}

.page-home .page-home__step > summary {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 46px 20px 18px;
  position: relative;
  cursor: pointer;
  list-style: none;
  font-size: clamp(16px, 1.7vw, 20px);
  font-weight: 700;
  color: var(--ink);
}

.page-home .page-home__step > summary::-webkit-details-marker {
  display: none;
}

.page-home .page-home__step > summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--summer);
  line-height: 1;
}

.page-home .page-home__step[open] > summary::after {
  content: "−";
}

.page-home .page-home__step > summary:hover {
  background: var(--hl);
}

.page-home .page-home__step-num {
  flex: none;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--summer);
}

.page-home .page-home__step-title {
  flex: 1 1 auto;
  min-width: 0;
}

.page-home .page-home__step-body {
  padding: 0 18px 22px 18px;
  border-left: 4px solid var(--hl);
  margin: 0 18px 22px 18px;
  padding-left: 18px;
}

.page-home .page-home__step-body p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

.page-home .page-home__step-meta {
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
  margin: 0;
}

.page-home .page-home__process-foot {
  margin: clamp(20px, 3vw, 30px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-home .page-home__process-foot a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--alert);
}

.page-home .page-home__process-foot a:hover {
  color: var(--alert);
}

/* ---------- 大屏合作渠道 ---------- */
.page-home .page-home__channels {
  padding: var(--rhythm) 0;
  background: var(--winter);
  color: #fff;
  border-top: var(--line);
  border-bottom: var(--line);
}

.page-home .page-home__ch-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.6vw, 48px);
  align-items: start;
}

.page-home .page-home__eyebrow-invert {
  color: rgba(255, 255, 255, .76);
}

.page-home .page-home__ch-title {
  color: #fff;
}

.page-home .page-home__ch-lead {
  margin: clamp(14px, 2vw, 20px) 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: rgba(255, 255, 255, .84);
}

.page-home .page-home__ch-list {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
  background: rgba(255, 255, 255, .28);
  border: 2px solid rgba(255, 255, 255, .55);
}

.page-home .page-home__ch-list li {
  background: var(--winter);
  padding: 16px 16px;
  display: grid;
  gap: 6px;
}

.page-home .page-home__ch-list b {
  font-size: 16px;
  font-weight: 900;
  color: #fff;
}

.page-home .page-home__ch-list span {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .78);
}

.page-home .page-home__ch-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .7);
}

.page-home .page-home__ch-cta {
  margin: clamp(20px, 3vw, 28px) 0 0;
}

.page-home .page-home__ch-visual {
  margin: 0;
  border: 2px solid rgba(255, 255, 255, .6);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, .35);
  background: #16295F;
}

.page-home .page-home__ch-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-home .page-home__caption-invert {
  background: #16295F;
  border-top: 2px solid rgba(255, 255, 255, .4);
  color: rgba(255, 255, 255, .82);
}

@media (min-width: 900px) {
  .page-home .page-home__ch-grid {
    grid-template-columns: 7fr 5fr;
  }
}

/* ---------- 服务规模 ---------- */
.page-home .page-home__scale {
  padding: var(--rhythm) 0;
  background: var(--paper);
}

.page-home .page-home__scale-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.6vw, 48px);
  align-items: start;
}

.page-home .page-home__scale-visual {
  margin: 0;
  border: var(--line);
  box-shadow: var(--ph-shadow);
  background: var(--panel);
}

.page-home .page-home__scale-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-home .page-home__scale-lead {
  margin: clamp(14px, 2vw, 20px) 0 0;
  max-width: 36em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--ink);
}

.page-home .page-home__scale-stats {
  margin-top: clamp(22px, 3vw, 32px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  background: var(--ink);
  border: var(--line);
  box-shadow: var(--ph-shadow);
}

.page-home .page-home__scale-stat {
  background: var(--paper);
  padding: 18px 18px;
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.page-home .page-home__scale-stat > span {
  flex: none;
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
  min-width: 4.4em;
}

.page-home .page-home__scale-stat:nth-child(1) > span { color: var(--spring); }
.page-home .page-home__scale-stat:nth-child(2) > span { color: var(--summer); }
.page-home .page-home__scale-stat:nth-child(3) > span { color: var(--autumn); }
.page-home .page-home__scale-stat:nth-child(4) > span { color: var(--winter); }

.page-home .page-home__scale-stat p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-home .page-home__scale-foot {
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-home .page-home__scale-foot a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--autumn);
}

.page-home .page-home__scale-foot a:hover {
  color: var(--autumn);
}

@media (min-width: 900px) {
  .page-home .page-home__scale-grid {
    grid-template-columns: 5fr 7fr;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .page-home__season-item,
  .page-home .page-home__rail-link {
    transition: none;
  }

  .page-home .page-home__season-item:hover {
    transform: none;
  }
}