.page-home {
  --home-sweep: 64px;
  --home-card: rgba(255, 255, 255, .45);
  --home-hair: rgba(26, 36, 54, .16);
  background: var(--ink-900);
  color: var(--text);
  overflow-x: clip;
  padding-bottom: clamp(40px, 6vw, 88px);
}

/* ============ 首屏 ============ */
.page-home .hero {
  position: relative;
}

.page-home .hero__ink {
  position: relative;
  overflow: hidden;
  padding-top: clamp(20px, 3vw, 36px);
  padding-bottom: clamp(112px, 15vw, 200px);
  background:
    radial-gradient(120% 78% at 84% 2%, rgba(255, 90, 31, .20), transparent 56%),
    radial-gradient(90% 62% at 6% 100%, rgba(79, 182, 232, .14), transparent 62%),
    var(--ink-900);
}

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

.page-home .hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .16;
  filter: saturate(.55) contrast(1.08);
}

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

.page-home .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--text-mute);
  margin-bottom: clamp(22px, 3.4vw, 40px);
}

.page-home .hero__kicker {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--brand-400);
}

.page-home .hero__title {
  margin: 0;
  font-size: clamp(32px, 6.4vw, 66px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--snow);
  max-width: 20ch;
}

.page-home .hero__lead {
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--text-dim);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-home .hero__strip {
  display: flex;
  align-items: flex-end;
  gap: clamp(6px, 1vw, 14px);
  height: clamp(70px, 11vw, 128px);
  margin-top: clamp(34px, 5vw, 56px);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-700);
}

.page-home .hero__cell {
  flex: 1 1 0;
  min-width: 0;
  border-radius: 4px 4px 0 0;
  transition: filter var(--dur-2) var(--ease);
}

.page-home .hero__cell--1 { height: 59%; background: rgba(79, 182, 232, .30); }
.page-home .hero__cell--2 { height: 77%; background: rgba(79, 182, 232, .50); }
.page-home .hero__cell--3 { height: 86%; background: rgba(63, 169, 129, .66); }
.page-home .hero__cell--4 { height: 80%; background: rgba(63, 169, 129, .78); }
.page-home .hero__cell--5 { height: 88%; background: rgba(255, 138, 76, .84); }
.page-home .hero__cell--6 { height: 100%; background: linear-gradient(180deg, var(--brand-500), var(--brand-700)); }

.page-home .hero__hint {
  margin: 12px 0 0;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--text-mute);
}

/* 纸面索引层（斜切） */
.page-home .hero__deck {
  position: relative;
  z-index: 2;
  margin-top: calc(-1 * var(--home-sweep));
  padding-top: calc(var(--home-sweep) + clamp(22px, 3.6vw, 44px));
  padding-bottom: clamp(28px, 4vw, 48px);
  background: var(--paper);
  color: var(--on-paper);
}

.page-home .hero__deck::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: calc(-1 * var(--home-sweep));
  height: var(--home-sweep);
  background: var(--paper);
  clip-path: polygon(0 100%, 100% 0, 100% 100%, 0 100%);
}

.page-home .hero__deck .label {
  color: var(--on-paper-dim);
}

.page-home .deck {
  list-style: none;
  margin: clamp(14px, 2.2vw, 24px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(12px, 1.6vw, 20px);
}

.page-home .deck__item {
  display: flex;
}

.page-home .deck__link {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  padding: clamp(16px, 2.2vw, 24px);
  border: 1px solid var(--home-hair);
  border-radius: var(--radius-m);
  background: var(--home-card);
  color: var(--on-paper);
  text-decoration: none;
  transition: border-color var(--dur-2) var(--ease), transform var(--dur-2) var(--ease);
}

.page-home .deck__link:hover,
.page-home .deck__link:focus-visible {
  border-color: var(--brand-500);
  transform: translateY(-2px);
}

.page-home .deck__idx {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--brand-700);
}

.page-home .deck__title {
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 800;
  line-height: 1.35;
}

.page-home .deck__text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--on-paper-dim);
}

.page-home .deck__go {
  margin-top: 4px;
  font-size: 13px;
  font-weight: 700;
  color: var(--brand-700);
}

/* ============ 通用区块 ============ */
.page-home .blk {
  padding: clamp(46px, 6.6vw, 92px) 0;
}

.page-home .sec-head {
  max-width: 74ch;
  margin-bottom: clamp(26px, 3.6vw, 46px);
}

.page-home .sec-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.page-home .sec-head .label,
.page-home .pair__text .label,
.page-home .switch__head .label {
  display: block;
  margin: 0 0 12px;
  color: var(--green-500);
}

.page-home .sec-head h2,
.page-home .pair__text h2,
.page-home .switch__head h2,
.page-home .help h2 {
  margin: 0;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.16;
  font-weight: 900;
  color: var(--snow);
}

.page-home .sec-lead {
  margin: 16px 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--text-dim);
}

.page-home .pair__text p,
.page-home .switch__step p,
.page-home .help p {
  margin: 14px 0 0;
  font-size: clamp(15px, 1.5vw, 16px);
  line-height: 1.82;
  color: var(--text-dim);
}

/* ============ 区间列表 ============ */
.page-home .intervals {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-home .interval {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: clamp(14px, 1.8vw, 18px) clamp(14px, 2vw, 22px);
  border: 1px solid var(--line-700);
  border-radius: var(--radius-m);
  background: var(--ink-800);
  transition: border-color var(--dur-2) var(--ease), background var(--dur-2) var(--ease);
}

.page-home .interval:hover {
  border-color: var(--brand-500);
  background: #172e52;
}

.page-home .interval__time {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--text-mute);
}

.page-home .interval__bar {
  height: 6px;
  border-radius: 999px;
  background: var(--line-700);
  transition: background var(--dur-3) var(--ease);
}

.page-home .interval--1 .interval__bar { background: rgba(79, 182, 232, .34); }
.page-home .interval--2 .interval__bar { background: rgba(79, 182, 232, .56); }
.page-home .interval--3 .interval__bar { background: rgba(63, 169, 129, .70); }
.page-home .interval--4 .interval__bar { background: rgba(63, 169, 129, .82); }
.page-home .interval--5 .interval__bar { background: rgba(255, 138, 76, .88); }
.page-home .interval--6 .interval__bar { background: linear-gradient(90deg, var(--brand-500), var(--brand-700)); }

.page-home .interval__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.page-home .interval__stat {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.page-home .interval__stat b {
  font-size: clamp(16px, 1.8vw, 19px);
  font-weight: 700;
  color: var(--snow);
}

.page-home .interval__stat i {
  font-style: normal;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--text-mute);
}

.page-home .interval__stat--net b {
  color: var(--brand-400);
}

/* 区间图说明区 */
.page-home .sec-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 38px);
  align-items: center;
  margin-top: clamp(28px, 4vw, 52px);
}

.page-home .sec-body__title {
  margin: 0;
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 800;
  line-height: 1.35;
  color: var(--snow);
}

.page-home .sec-body__text p {
  margin: 14px 0 20px;
  font-size: clamp(15px, 1.5vw, 16px);
  line-height: 1.82;
  color: var(--text-dim);
}

.page-home .sec-body__fig {
  margin: 0;
  border: 1px solid var(--line-700);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--ink-800);
}

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

.page-home .media__caption {
  display: block;
  padding: 12px 16px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-mute);
  background: rgba(11, 27, 51, .72);
  border-top: 1px solid var(--line-700);
}

/* ============ 同步包 ============ */
.page-home .blk--sync {
  background: linear-gradient(180deg, var(--ink-900), #0d1f3a 55%, var(--ink-900));
}

.page-home .band {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px 20px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--brand-500);
  margin-bottom: clamp(24px, 3.4vw, 42px);
}

.page-home .band__tag {
  flex: none;
  padding: 5px 12px;
  border-radius: var(--pill);
  background: var(--brand-500);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
}

.page-home .band__title {
  flex: 1 1 16ch;
  margin: 0;
  font-size: clamp(22px, 3.2vw, 36px);
  line-height: 1.18;
  font-weight: 900;
  color: var(--snow);
}

.page-home .band__link {
  flex: none;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--brand-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-2) var(--ease);
}

.page-home .band__link:hover {
  border-bottom-color: var(--brand-400);
}

.page-home .sync {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 22px);
}

.page-home .sync__card {
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--line-700);
  border-left: 4px solid var(--green-500);
  border-radius: var(--radius-s) var(--radius-m) var(--radius-m) var(--radius-s);
  background: var(--ink-800);
}

.page-home .sync__card:nth-child(2) {
  border-left-color: var(--brand-500);
}

.page-home .sync__card:nth-child(3) {
  border-left-color: var(--cyan-400);
}

.page-home .sync__idx {
  display: block;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--text-mute);
  margin-bottom: 10px;
}

.page-home .sync__title {
  margin: 0 0 10px;
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 800;
  color: var(--snow);
}

.page-home .sync__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-home .sync__note {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--text-mute);
}

/* ============ 双栏（服务清单 / 高原） ============ */
.page-home .pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 46px);
  align-items: center;
}

.page-home .pair__fig {
  margin: 0;
  border: 1px solid var(--line-700);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--ink-800);
  aspect-ratio: 3 / 2;
}

.page-home .pair__fig--square {
  aspect-ratio: 1 / 1;
}

.page-home .pair__note {
  font-size: 14px;
}

.page-home .pair__note a {
  color: var(--brand-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 76, .45);
}

.page-home .chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 22px;
  padding: 0;
}

.page-home .chip {
  padding: 6px 14px;
  border: 1px solid var(--line-700);
  border-radius: var(--pill);
  background: var(--ink-800);
  color: var(--text-dim);
  font-size: 13px;
}

/* ============ 换设备 ============ */
.page-home .blk--switch {
  background: var(--ink-800);
}

.page-home .switch {
  border: 1px solid var(--line-700);
  border-radius: var(--radius-l);
  padding: clamp(22px, 3.4vw, 44px);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(255, 90, 31, .12), transparent 58%),
    var(--ink-900);
}

.page-home .switch__head {
  max-width: 60ch;
}

.page-home .switch__steps {
  list-style: none;
  margin: clamp(24px, 3.4vw, 38px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  counter-reset: step;
}

.page-home .switch__step {
  position: relative;
  padding-left: 58px;
  padding-top: 2px;
}

.page-home .switch__step::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 34px;
  bottom: -16px;
  width: 1px;
  background: var(--line-700);
}

.page-home .switch__step:last-child::before {
  display: none;
}

.page-home .switch__idx {
  position: absolute;
  left: 0;
  top: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--brand-500);
  background: rgba(255, 90, 31, .12);
  color: var(--brand-400);
  font-size: 12px;
}

.page-home .switch__note {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line-700);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-mute);
}

/* ============ 首次入口 ============ */
.page-home .routes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-home .route {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 24px;
  align-items: center;
  gap: 16px;
  padding: clamp(16px, 2.2vw, 24px);
  border: 1px solid var(--line-700);
  border-radius: var(--radius-m);
  background: var(--ink-800);
  color: inherit;
  text-decoration: none;
  transition: border-color var(--dur-2) var(--ease), transform var(--dur-2) var(--ease);
}

.page-home .route:hover,
.page-home .route:focus-visible {
  border-color: var(--brand-500);
  transform: translateX(3px);
}

.page-home .route__key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-s);
  background: var(--brand-500);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
}

.page-home .route__body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-home .route__name {
  font-size: clamp(16px, 1.8vw, 18px);
  font-weight: 800;
  color: var(--snow);
}

.page-home .route__desc {
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-home .route__go {
  font-size: 18px;
  color: var(--brand-400);
}

/* ============ 高原数据 ============ */
.page-home .facts {
  list-style: none;
  margin: 24px 0 18px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-home .fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border: 1px solid var(--line-700);
  border-radius: var(--radius-s);
  background: var(--ink-800);
}

.page-home .fact b {
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 700;
  color: var(--green-500);
}

.page-home .fact span {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--text-mute);
}

/* ============ 收尾 ============ */
.page-home .blk--help {
  padding-bottom: clamp(30px, 4vw, 60px);
}

.page-home .help {
  padding: clamp(24px, 3.6vw, 48px);
  border: 1px solid var(--line-700);
  border-radius: var(--radius-l);
  background:
    radial-gradient(90% 120% at 0% 0%, rgba(63, 169, 129, .14), transparent 60%),
    var(--ink-800);
  max-width: 78ch;
}

.page-home .help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 2.8vw, 30px);
}

.page-home .help__note {
  margin-top: 20px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--text-mute);
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-home .interval {
    grid-template-columns: 92px minmax(0, 1fr) auto;
    align-items: center;
    gap: 18px;
  }

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

  .page-home .routes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 920px) {
  .page-home .deck {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .sec-body {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-home .pair {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(28px, 4vw, 60px);
  }

  .page-home .pair--flip .pair__text {
    order: 2;
  }

  .page-home .pair--flip .pair__fig {
    order: 1;
  }

  .page-home .switch__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }

  .page-home .switch__step {
    padding-left: 0;
    padding-top: 56px;
  }

  .page-home .switch__step::before {
    left: 38px;
    right: -26px;
    top: 18px;
    bottom: auto;
    width: auto;
    height: 1px;
  }

  .page-home .switch__idx {
    left: 0;
    top: 0;
  }
}

@media (max-width: 480px) {
  .page-home .hero__actions .btn {
    width: 100%;
    text-align: center;
  }

  .page-home .route {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 12px;
  }

  .page-home .route__go {
    display: none;
  }

  .page-home .route__key {
    width: 38px;
    height: 38px;
    font-size: 14px;
  }
}