.page-home {
  --home-rule: 1.5px solid var(--ink);
  --home-soft: rgba(21, 33, 42, 0.055);
  --home-shadow: 5px 5px 0 rgba(21, 33, 42, 0.14);
  background: var(--paper);
  color: var(--ink);
}

.page-home *,
.page-home *::before,
.page-home *::after {
  box-sizing: border-box;
}

.page-home .home-top {
  padding-top: clamp(0.8rem, 2vw, 1.4rem);
}

.page-home .eyebrow {
  color: var(--ochre);
  letter-spacing: 0.12em;
  margin: 0 0 0.6rem;
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.2rem, 3vw, 2.2rem) 0 clamp(1.8rem, 4vw, 3rem);
  border-bottom: var(--home-rule);
  background-image:
    repeating-linear-gradient(180deg, transparent 0 31px, var(--home-soft) 31px 32px),
    linear-gradient(180deg, var(--paper) 0%, var(--paper) 62%, var(--paper-2) 100%);
}

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

.page-home .hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.4rem, 4vw, 2.6rem);
  align-items: start;
}

.page-home .hero__batch {
  display: flex;
  align-items: baseline;
  gap: 0.06em;
  margin: 0.1rem 0 0.5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(4.6rem, 20vw, 9.5rem);
  line-height: 0.82;
  letter-spacing: -0.045em;
}

.page-home .hero__v {
  font-size: 0.32em;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-home .hero__dash {
  font-size: 0.32em;
  color: var(--ink-55);
  transform: translateY(-0.34em);
}

.page-home .hero__n {
  color: var(--ochre);
}

.page-home .hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 4.6vw, 2.55rem);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.012em;
  max-width: 20ch;
}

.page-home .hero__text {
  margin: 0.9rem 0 0;
  max-width: 46ch;
  font-size: clamp(0.95rem, 1.1vw, 1.04rem);
  line-height: 1.8;
  color: var(--ink-70);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 0.8rem;
  margin-top: 1.3rem;
}

.page-home .hero__actions .btn {
  font-size: 0.9rem;
}

.page-home .hero__toast {
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--ochre);
  opacity: 0;
  transition: opacity 0.2s var(--ease);
}

.page-home .hero__toast.is-on {
  opacity: 1;
}

.page-home .hero__meta {
  margin: 1rem 0 0;
  padding-top: 0.8rem;
  font-size: 0.73rem;
  line-height: 1.7;
  letter-spacing: 0.05em;
  color: var(--ink-55);
  border-top: 1px dashed var(--ink-30);
  max-width: 40ch;
}

.page-home .hero__paths-label {
  margin: 0 0 0.7rem;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--ink-55);
}

.page-home .paths {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-home .paths__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.85rem;
  padding: 0.85rem 0.95rem;
  border: var(--home-rule);
  border-left-width: 8px;
  background: var(--paper);
  box-shadow: var(--home-shadow);
  color: var(--ink);
  text-decoration: none;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-home .paths__item:nth-child(1) .paths__link { border-left-color: var(--lime); }
.page-home .paths__item:nth-child(2) .paths__link { border-left-color: var(--gold); }
.page-home .paths__item:nth-child(3) .paths__link { border-left-color: var(--ochre); }

.page-home .paths__link:hover,
.page-home .paths__link:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 rgba(21, 33, 42, 0.16);
}

.page-home .paths__link:focus-visible {
  outline: 3px solid var(--deep);
  outline-offset: 2px;
}

.page-home .paths__num {
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--ochre);
}

.page-home .paths__title {
  display: block;
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.35;
}

.page-home .paths__desc {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.83rem;
  line-height: 1.55;
  color: var(--ink-70);
}

.page-home .paths__go {
  font-size: 1.05rem;
  color: var(--ochre);
  transition: transform 0.18s var(--ease);
}

.page-home .paths__link:hover .paths__go {
  transform: translateX(4px);
}

.page-home .hero__figure {
  margin: 1rem 0 0;
}

.page-home .hero__figure .figure__media {
  aspect-ratio: 16 / 10;
}

/* ---------- 下一章预告 ---------- */
.page-home .nextup {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 1.1rem;
  padding: 0.95rem 0;
  border-bottom: var(--home-rule);
}

.page-home .nextup__label {
  margin: 0;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--ink-55);
}

.page-home .nextup__link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.7rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  border-bottom: 2px solid transparent;
  transition: border-color 0.18s var(--ease);
}

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

.page-home .nextup__idx {
  font-size: 0.74rem;
  color: var(--ochre);
}

.page-home .nextup__arrow {
  color: var(--deep);
}

/* ---------- 主体栅格与侧栏 ---------- */
.page-home .home-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.2rem, 3vw, 2.2rem);
  padding-top: clamp(1.4rem, 3vw, 2.4rem);
}

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

.page-home .rail__label {
  margin: 0 0 0.6rem;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--ink-55);
}

.page-home .rail__list {
  list-style: none;
  margin: 0 0 0.9rem;
  padding: 0;
  display: grid;
  gap: 0.15rem;
}

.page-home .rail__link {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  padding: 0.42rem 0.4rem 0.42rem 0.6rem;
  border-left: 3px solid transparent;
  font-size: 0.85rem;
  color: var(--ink-70);
  text-decoration: none;
  transition: background 0.18s var(--ease), color 0.18s var(--ease);
}

.page-home .rail__num {
  font-size: 0.68rem;
  color: var(--ochre);
}

.page-home .rail__link:hover {
  background: var(--paper-2);
  color: var(--ink);
}

.page-home .rail__link[aria-current="true"] {
  border-left-color: var(--lime);
  background: var(--paper-2);
  color: var(--ink);
  font-weight: 700;
}

.page-home .rail__track {
  height: 4px;
  background: var(--ink-30);
  overflow: hidden;
}

.page-home .rail__fill {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--lime);
  transform-origin: 0 50%;
  transform: scaleX(var(--progress, 1));
  transition: transform 0.2s var(--ease);
}

/* ---------- 章节通用 ---------- */
.page-home .home-flow {
  min-width: 0;
}

.page-home .sec {
  padding: clamp(1.5rem, 3.5vw, 2.6rem) 0 clamp(1.6rem, 4vw, 2.8rem);
  border-top: var(--home-rule);
}

.page-home .home-flow > .sec:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-home .sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3.4vw, 2.15rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
  max-width: 22ch;
}

.page-home .sec__lede {
  margin: 0.85rem 0 0;
  max-width: 62ch;
  font-size: clamp(0.95rem, 1.05vw, 1rem);
  line-height: 1.85;
  color: var(--ink-70);
}

.page-home .sec__foot {
  margin: 1.3rem 0 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--ink-70);
}

.page-home .sec__foot a {
  color: var(--ochre);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-home .cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem 1rem;
  margin-top: 1.4rem;
}

.page-home .cta-row .mono {
  font-size: 0.74rem;
  line-height: 1.6;
  color: var(--ink-55);
}

/* ---------- 图片 ---------- */
.page-home .figure {
  margin: 0;
}

.page-home .figure__media {
  overflow: hidden;
  border: var(--home-rule);
  background: linear-gradient(160deg, var(--paper-2), var(--mist));
}

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

.page-home .figure__cap {
  margin-top: 0.45rem;
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: var(--ink-55);
}

.page-home .band {
  margin: clamp(1.2rem, 3vw, 2rem) 0;
}

.page-home .band .figure__media {
  aspect-ratio: 21 / 9;
}

/* ---------- 适配清单 ---------- */
.page-home .envs {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.65rem;
}

.page-home .env__box {
  border: var(--home-rule);
  background: var(--paper);
  box-shadow: 3px 3px 0 rgba(21, 33, 42, 0.1);
  transition: box-shadow 0.18s var(--ease);
}

.page-home .env__box[open] {
  background: var(--paper-2);
}

.page-home .env__sum {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 0.85rem;
  cursor: pointer;
  list-style: none;
}

.page-home .env__sum::-webkit-details-marker {
  display: none;
}

.page-home .env__sum:focus-visible {
  outline: 3px solid var(--deep);
  outline-offset: -3px;
}

.page-home .env__num {
  font-size: 0.68rem;
  padding: 0.12rem 0.3rem;
  background: var(--gold);
  color: var(--ink);
}

.page-home .env__name {
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.35;
  min-width: 0;
  overflow-wrap: anywhere;
}

.page-home .env__cue {
  color: var(--ochre);
  font-size: 1rem;
  line-height: 1;
  transition: transform 0.18s var(--ease);
}

.page-home .env__box[open] .env__cue {
  transform: rotate(45deg);
}

.page-home .env__note {
  margin: 0 0.85rem 0.85rem;
  padding-top: 0.55rem;
  border-top: 1px dashed var(--ink-30);
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--ink-70);
}

/* ---------- 双通道 ---------- */
.page-home .duo {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.page-home .duo__cards {
  display: grid;
  gap: 0.85rem;
}

.page-home .duo__card {
  padding: 1rem 1.1rem 1.1rem;
  border: var(--home-rule);
}

.page-home .duo__card--a {
  border-left: 8px solid var(--lime);
  background: var(--paper);
}

.page-home .duo__card--b {
  background: var(--deep);
  border-color: var(--deep);
  color: var(--paper);
}

.page-home .duo__kicker {
  margin: 0;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--ochre);
}

.page-home .duo__card--b .duo__kicker {
  color: var(--gold);
}

.page-home .duo__title {
  margin: 0.25rem 0 0;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  line-height: 1.2;
}

.page-home .duo__text {
  margin: 0.6rem 0 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--ink-70);
}

.page-home .duo__card--b .duo__text {
  color: rgba(243, 233, 215, 0.82);
}

.page-home .duo__list {
  margin: 0.7rem 0 0;
  padding-left: 1.1rem;
  font-size: 0.85rem;
  line-height: 1.75;
}

.page-home .duo__list li::marker {
  color: var(--ochre);
}

.page-home .duo__card--b .duo__list li::marker {
  color: var(--gold);
}

.page-home .duo__link {
  display: inline-block;
  margin-top: 0.9rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--ochre-deep);
  text-decoration: none;
  border-bottom: 2px solid var(--lime);
  padding-bottom: 1px;
}

.page-home .duo__card--b .duo__link {
  color: var(--gold);
}

.page-home .duo__link:hover,
.page-home .duo__link:focus-visible {
  background: var(--lime);
  color: var(--ink);
}

.page-home .duo__figure .figure__media {
  aspect-ratio: 1 / 1;
}

/* ---------- 换设备恢复 ---------- */
.page-home .recover__grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.page-home .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-home .step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.15rem 0.85rem;
  padding: 0.8rem 0.95rem;
  border: var(--home-rule);
  background: var(--paper);
}

.page-home .step__num {
  grid-row: 1 / span 2;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  line-height: 1.05;
  color: var(--ochre);
}

.page-home .step h3 {
  margin: 0;
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.4;
}

.page-home .step p {
  margin: 0.1rem 0 0;
  grid-column: 2;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--ink-70);
}

.page-home .recover__figure .figure__media {
  aspect-ratio: 4 / 3;
}

/* ---------- 批次轨迹 ---------- */
.page-home .stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
  margin: 1.4rem 0 0;
  padding: 0;
}

.page-home .stat {
  display: flex;
  flex-direction: column-reverse;
  justify-content: flex-end;
  padding: 0.8rem 0.85rem;
  background: var(--paper-2);
  border-top: 3px solid var(--ochre);
  min-width: 0;
}

.page-home .stat__num {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-home .stat__label {
  margin: 0 0 0.4rem;
  font-size: 0.73rem;
  line-height: 1.5;
  color: var(--ink-70);
}

.page-home .timeline {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
}

.page-home .tl {
  display: grid;
  grid-template-columns: 3.4rem minmax(0, 1fr);
  gap: 0.1rem 0.8rem;
  padding: 0.7rem 0;
  border-bottom: 1px dashed var(--ink-30);
}

.page-home .tl__year {
  grid-row: 1 / span 2;
  font-size: 0.78rem;
  color: var(--deep);
  letter-spacing: 0.04em;
}

.page-home .tl__name {
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.4;
}

.page-home .tl__desc {
  margin: 0.1rem 0 0;
  grid-column: 2;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--ink-70);
}

/* ---------- 联系 ---------- */
.page-home .sec--contact {
  border-top: 0;
}

.page-home .contact-card {
  margin-top: 1.3rem;
  padding: clamp(1rem, 2.6vw, 1.7rem);
  background: var(--ochre-deep);
  color: var(--paper);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.1rem;
}

.page-home .contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
  font-size: 0.9rem;
  line-height: 1.6;
}

.page-home .contact-list li {
  display: grid;
  grid-template-columns: 4.6rem minmax(0, 1fr);
  gap: 0.6rem;
  align-items: baseline;
}

.page-home .contact-list .mono {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-home .contact-list__val {
  min-width: 0;
  overflow-wrap: anywhere;
}

.page-home .contact-card__act {
  display: grid;
  gap: 0.6rem;
  justify-items: start;
}

.page-home .contact-card__hint {
  margin: 0;
  font-size: 0.72rem;
  line-height: 1.65;
  color: rgba(243, 233, 215, 0.78);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-home .envs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-home .duo {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-home .recover__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.72fr);
    gap: 1.2rem;
  }

  .page-home .contact-card {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-home .contact-card__act {
    justify-items: end;
  }
}

@media (min-width: 980px) {
  .page-home .hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-home .hero__trace {
    display: block;
    position: absolute;
    top: 6%;
    right: 3%;
    width: clamp(200px, 24vw, 320px);
    height: auto;
    opacity: 0.5;
    pointer-events: none;
  }

  .page-home .hero__trace-line {
    stroke: var(--ochre);
  }

  .page-home .hero__trace-a {
    fill: var(--deep);
  }

  .page-home .hero__trace-b {
    fill: var(--lime);
  }
}

@media (min-width: 1000px) {
  .page-home .home-body {
    grid-template-columns: 178px minmax(0, 1fr);
    gap: clamp(2rem, 3.5vw, 3.2rem);
  }

  .page-home .rail {
    display: block;
    position: sticky;
    top: calc(var(--bar-h) + 1.4rem);
    align-self: start;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-home .paths__link,
  .page-home .paths__go,
  .page-home .env__cue,
  .page-home .rail__fill,
  .page-home .hero__toast,
  .page-home .nextup__link {
    transition: none;
  }

  .page-home .paths__link:hover,
  .page-home .paths__link:focus-visible {
    transform: none;
  }

  .page-home .paths__link:hover .paths__go {
    transform: none;
  }
}

.page-home {
  --progress: inherit;
}