.page-home {
  --home-frame: rgba(217, 195, 155, 0.24);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
}

/* ===== 首屏：框景窗口 ===== */
.page-home .hero {
  padding-top: clamp(24px, 4vw, 48px);
  padding-bottom: clamp(48px, 6vw, 76px);
}

.page-home .hero__frame {
  position: relative;
  border: 1px solid var(--ink-14);
  border-radius: var(--r-lg);
  padding: clamp(24px, 3.4vw, 52px);
  background:
    radial-gradient(120% 90% at 88% 0%, var(--home-frame), rgba(243, 237, 226, 0) 62%),
    var(--paper);
}

.page-home .hero__ruler {
  position: absolute;
  top: 14px;
  left: 14px;
  right: 14px;
  height: 8px;
  background-image: repeating-linear-gradient(90deg, var(--ink-45) 0 1px, transparent 1px 20px);
  opacity: 0.6;
  pointer-events: none;
}

.page-home .hero__context {
  margin: 0 0 clamp(20px, 3vw, 34px);
  font-size: var(--step-caption);
  letter-spacing: 0.06em;
  color: var(--slate);
}

.page-home .hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 56px);
  align-items: end;
}

.page-home .hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 9vw, 6.4rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-home .hero__kicker {
  margin: clamp(16px, 2vw, 24px) 0 0;
  font-family: var(--font-mono);
  font-size: var(--step-caption);
  letter-spacing: 0.04em;
  color: var(--deep);
  padding-left: 14px;
  border-left: 3px solid var(--signal);
}

.page-home .hero__lede {
  margin: clamp(16px, 2vw, 22px) 0 0;
  max-width: 42ch;
  font-size: var(--step-body);
  line-height: 1.85;
  color: var(--ink-70);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

.page-home .hero__media {
  margin: 0;
  position: relative;
}

.page-home .hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 8;
  object-fit: cover;
  border-radius: var(--r-md);
  border: 1px solid var(--ink-08);
}

.page-home .hero__cities {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
}

.page-home .hero__cities a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 18px;
  border-radius: var(--r-pill);
  background: var(--paper-white);
  border: 1px solid var(--ink-14);
  color: var(--ink);
  font-size: var(--step-caption);
  font-weight: 600;
  text-decoration: none;
  transition: background 0.28s ease, color 0.28s ease, border-color 0.28s ease;
}

.page-home .hero__cities a::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--turq);
  transition: background 0.28s ease;
}

.page-home .hero__cities a:hover,
.page-home .hero__cities a:focus-visible {
  background: var(--deep);
  border-color: var(--deep);
  color: var(--paper-white);
}

.page-home .hero__cities a:hover::before,
.page-home .hero__cities a:focus-visible::before {
  background: var(--lime);
}

/* ===== 四地入口 ===== */
.page-home .cities__head {
  max-width: 62ch;
}

.page-home .cities__intro {
  margin: clamp(14px, 1.8vw, 20px) 0 0;
  font-size: var(--step-body);
  line-height: 1.85;
  color: var(--ink-70);
}

.page-home .cities__list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 32px);
  margin: clamp(38px, 5vw, 68px) 0 0;
  padding: 0;
}

.page-home .city {
  position: relative;
  padding: 26px 0 0 24px;
  border-left: 2px solid var(--ink-14);
  transition: transform 0.36s ease, border-color 0.36s ease;
}

.page-home .city::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 28px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--turq);
  transition: background 0.3s ease, border-color 0.3s ease;
}

.page-home .city:hover,
.page-home .city:focus-within {
  transform: translateY(-6px);
  border-left-color: var(--signal);
}

.page-home .city:hover::before,
.page-home .city:focus-within::before {
  background: var(--signal);
  border-color: var(--signal);
}

.page-home .city__num {
  display: block;
  font-size: var(--step-caption);
  letter-spacing: 0.08em;
  color: var(--slate);
}

.page-home .city__name {
  margin: 8px 0 0;
  font-family: var(--font-heavy);
  font-size: var(--step-h3);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-home .city__desc {
  margin: 12px 0 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink-70);
}

.page-home .city__link {
  display: inline-block;
  margin-top: 16px;
  font-size: var(--step-caption);
  font-weight: 700;
  color: var(--deep);
  text-decoration: none;
  border-bottom: 2px solid var(--lime);
  padding-bottom: 2px;
}

.page-home .city__link:hover,
.page-home .city__link:focus-visible {
  color: var(--ember);
  border-bottom-color: var(--ember);
}

/* ===== 两条服务主线 ===== */
.page-home .tracks__head {
  max-width: 58ch;
}

.page-home .tracks__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 28px);
  margin-top: clamp(32px, 4vw, 56px);
}

.page-home .track {
  border-radius: var(--r-lg);
  padding: clamp(26px, 3.4vw, 48px);
}

.page-home .track--install {
  background: var(--deep);
  color: var(--paper-white);
}

.page-home .track--select {
  background: var(--sand);
  color: var(--ink);
}

.page-home .track__tag {
  display: inline-block;
  margin: 0;
  padding: 5px 14px;
  border-radius: var(--r-pill);
  font-size: var(--step-caption);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-home .track--install .track__tag {
  background: var(--signal);
  color: var(--paper-white);
}

.page-home .track--select .track__tag {
  background: var(--deep);
  color: var(--paper-white);
}

.page-home .track__title {
  margin: clamp(16px, 2vw, 22px) 0 0;
  font-family: var(--font-heavy);
  font-size: var(--step-h2);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.15;
}

.page-home .track--install .track__title {
  color: var(--paper-white);
}

.page-home .track__text {
  margin: clamp(14px, 1.8vw, 20px) 0 0;
  font-size: var(--step-body);
  line-height: 1.85;
}

.page-home .track--install .track__text {
  color: rgba(253, 251, 246, 0.82);
}

.page-home .track--select .track__text {
  color: var(--ink-70);
}

.page-home .track__steps {
  list-style: none;
  counter-reset: step;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(20px, 2.6vw, 30px) 0 0;
  padding: 0;
}

.page-home .track__step {
  counter-increment: step;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 15px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(253, 251, 246, 0.35);
  font-size: var(--step-caption);
  letter-spacing: 0.02em;
}

.page-home .track__step::before {
  content: "0" counter(step);
  font-family: var(--font-mono);
  font-size: 0.78em;
  opacity: 0.7;
}

.page-home .track__metric {
  margin: clamp(20px, 2.6vw, 30px) 0 0;
  font-size: var(--step-body);
  line-height: 1.7;
  color: var(--ink-70);
}

.page-home .track__metric .mono {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 10px;
  border-radius: var(--r-sm);
  background: var(--lime);
  color: var(--ink);
  font-weight: 700;
  font-size: 1.15rem;
}

.page-home .track__foot {
  margin: clamp(20px, 2.6vw, 30px) 0 0;
  padding-top: 18px;
  font-size: var(--step-caption);
  line-height: 1.7;
}

.page-home .track--install .track__foot {
  border-top: 1px solid rgba(253, 251, 246, 0.25);
  color: rgba(253, 251, 246, 0.72);
}

.page-home .track--select .track__foot {
  border-top: 1px solid var(--ink-14);
  color: var(--ink-70);
}

.page-home .tracks__figure {
  margin: clamp(28px, 4vw, 52px) 0 0;
}

.page-home .tracks__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--r-lg);
}

.page-home .tracks__caption {
  margin-top: 12px;
  padding-left: 14px;
  border-left: 2px solid var(--turq);
  font-size: var(--step-caption);
  color: var(--slate);
}

/* ===== 可核验信息 ===== */
.page-home .verifiable__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 60px);
  align-items: start;
}

.page-home .verifiable__lead {
  margin: clamp(14px, 1.8vw, 22px) 0 0;
  max-width: 46ch;
  font-size: var(--step-body);
  line-height: 1.85;
  color: var(--ink-70);
}

.page-home .verifiable__list {
  margin: clamp(26px, 3.4vw, 42px) 0 0;
}

.page-home .verifiable__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 20px 0;
  border-top: 1px solid var(--ink-14);
}

.page-home .verifiable__row:last-child {
  border-bottom: 1px solid var(--ink-14);
}

.page-home .verifiable__term {
  font-family: var(--font-heavy);
  font-size: var(--step-body);
  font-weight: 800;
  color: var(--ink);
}

.page-home .verifiable__desc {
  margin: 0;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink-70);
}

.page-home .chip--lime {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 6px;
  background: var(--lime);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.86em;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-home .verifiable__side {
  position: relative;
}

.page-home .verifiable__figure {
  margin: 0;
}

.page-home .verifiable__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--r-md);
}

.page-home .verifiable__conclusion {
  margin: 20px 0 0;
  background: var(--paper-white);
  border-radius: var(--r-md);
  padding: 22px 22px 20px 24px;
  box-shadow: 0 18px 40px rgba(16, 26, 36, 0.1);
}

.page-home .verifiable__conclusion .conclusion__label {
  margin: 0;
}

.page-home .verifiable__conclusion .conclusion__text {
  margin: 10px 0 0;
  font-family: var(--font-heavy);
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.5;
  color: var(--ink);
}

.page-home .verifiable__conclusion .conclusion__meta {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: var(--step-caption);
  letter-spacing: 0.02em;
  color: var(--slate);
}

.page-home .verifiable__strip {
  margin: clamp(30px, 4vw, 52px) 0 0;
}

.page-home .verifiable__strip img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 21 / 8;
  object-fit: cover;
  border-radius: var(--r-md);
}

.page-home .verifiable__caption {
  margin-top: 12px;
  padding-left: 14px;
  border-left: 2px solid var(--signal);
  font-size: var(--step-caption);
  color: var(--slate);
}

/* ===== 最近一轮更新 ===== */
.page-home .updates__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
}

.page-home .updates__list {
  list-style: none;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
}

.page-home .upd {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 24px 0;
  border-top: 1px solid var(--ink-14);
}

.page-home .upd:last-child {
  border-bottom: 1px solid var(--ink-14);
}

.page-home .upd__time {
  font-size: var(--step-caption);
  letter-spacing: 0.06em;
  color: var(--turq);
}

.page-home .upd__title {
  margin: 0;
  font-family: var(--font-heavy);
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-home .upd__note {
  margin: 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink-70);
}

.page-home .upd__link {
  justify-self: start;
  font-size: var(--step-caption);
  font-weight: 700;
  color: var(--deep);
  text-decoration: none;
  border-bottom: 2px solid var(--lime);
  padding-bottom: 2px;
}

.page-home .upd__link:hover,
.page-home .upd__link:focus-visible {
  color: var(--ember);
  border-bottom-color: var(--ember);
}

@media (hover: hover) and (min-width: 900px) {
  .page-home .upd__note {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.36s ease, opacity 0.3s ease, margin 0.3s ease;
  }

  .page-home .upd:hover .upd__note,
  .page-home .upd:focus-within .upd__note {
    max-height: 6em;
    opacity: 1;
    margin-top: 4px;
  }
}

/* ===== 下一步 ===== */
.page-home .start__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  background: var(--sand);
  border-radius: var(--r-lg);
  padding: clamp(28px, 4vw, 56px);
}

.page-home .start__list {
  list-style: none;
  counter-reset: prep;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
}

.page-home .start__item {
  counter-increment: prep;
  position: relative;
  padding: 14px 0 14px 44px;
  border-top: 1px solid rgba(16, 26, 36, 0.16);
  font-size: var(--step-body);
  line-height: 1.7;
  color: var(--ink);
}

.page-home .start__item:last-child {
  border-bottom: 1px solid rgba(16, 26, 36, 0.16);
}

.page-home .start__item::before {
  content: "0" counter(prep);
  position: absolute;
  left: 0;
  top: 16px;
  font-family: var(--font-mono);
  font-size: var(--step-caption);
  font-weight: 700;
  color: var(--ember);
}

.page-home .start__actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.page-home .start__note {
  margin: 0;
  font-size: var(--step-caption);
  line-height: 1.7;
  color: var(--ink-70);
}

.page-home .actionbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: clamp(24px, 4vw, 40px);
  padding: 14px 14px 14px clamp(22px, 3vw, 34px);
  border-radius: var(--r-pill);
  background: var(--deep);
  color: var(--paper-white);
}

.page-home .actionbar__text {
  margin: 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.7;
}

@keyframes home-bar-grow {
  from {
    max-width: 640px;
    opacity: 0.35;
  }
  to {
    max-width: 1240px;
    opacity: 1;
  }
}

@supports (animation-timeline: view()) {
  .page-home .actionbar {
    animation: home-bar-grow linear both;
    animation-timeline: view();
    animation-range: entry 15% cover 45%;
  }
}

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

  .page-home .verifiable__row {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-home .hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  }

  .page-home .hero__cities {
    position: absolute;
    left: clamp(24px, 3.4vw, 52px);
    bottom: 0;
    transform: translateY(50%);
    margin: 0;
  }

  .page-home .hero__frame {
    margin-bottom: 22px;
  }

  .page-home .cities__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(20px, 2.6vw, 32px);
  }

  .page-home .cities__list > .city:nth-child(2) {
    margin-top: 46px;
  }

  .page-home .cities__list > .city:nth-child(3) {
    margin-top: 14px;
  }

  .page-home .cities__list > .city:nth-child(4) {
    margin-top: 58px;
  }

  .page-home .tracks__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-home .track--select {
    margin-top: 46px;
  }

  .page-home .verifiable__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
  }

  .page-home .verifiable__conclusion {
    margin-top: -56px;
    margin-left: -28px;
  }

  .page-home .upd {
    grid-template-columns: 140px minmax(0, 1fr) auto;
    grid-template-areas:
      "time title link"
      ". note .";
    column-gap: 28px;
    align-items: baseline;
    border-top: 1px solid var(--ink-14);
  }

  .page-home .upd__time {
    grid-area: time;
  }

  .page-home .upd__title {
    grid-area: title;
  }

  .page-home .upd__note {
    grid-area: note;
  }

  .page-home .upd__link {
    grid-area: link;
  }

  .page-home .start__panel {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    align-items: end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .page-home .actionbar {
    animation: none !important;
    max-width: none;
    opacity: 1;
  }

  .page-home .city,
  .page-home .upd__note {
    transition: none;
  }
}