.page-home {
  --home-pad: clamp(52px, 8vw, 104px);
  display: block;
  background: var(--c-ink);
  color: var(--c-pale);
  font-family: var(--f-body);
  overflow-x: clip;
}

.page-home .gi-wrap {
  position: relative;
}

.page-home a {
  color: inherit;
}

/* ===== 首屏 ===== */

.home-hero {
  position: relative;
  padding-block: clamp(40px, 7vw, 84px) clamp(36px, 5vw, 64px);
  background:
    radial-gradient(110% 90% at 88% -10%, rgba(30, 91, 255, 0.3), transparent 62%),
    linear-gradient(180deg, #0a1a2f 0%, #0e2748 100%);
  border-bottom: 1px solid var(--c-line);
  overflow: hidden;
}

.home-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(127, 168, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127, 168, 255, 0.07) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}

.home-hero > .gi-wrap {
  z-index: 1;
}

.home-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-volt-soft);
}

.home-kicker__coord {
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid var(--c-gold);
  color: var(--c-gold);
  font-size: 11px;
  letter-spacing: 0.14em;
}

.home-hero__title {
  margin: 0 0 16px;
  max-width: 18em;
  font-family: var(--f-head);
  font-weight: 900;
  font-size: clamp(27px, 5vw, 50px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: #ffffff;
}

.home-hero__lede {
  margin: 0 0 clamp(24px, 4vw, 40px);
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.85;
  color: var(--c-pale);
  opacity: 0.88;
}

.home-hero__grid {
  display: grid;
  gap: 16px;
}

.home-rail {
  padding: 16px 14px;
  border: 1px solid var(--c-line);
  background: rgba(14, 39, 72, 0.55);
}

.home-rail__cap {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--c-line);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--c-slate);
}

.home-rail__list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.home-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 8px;
  border-left: 2px solid transparent;
  text-decoration: none;
  color: var(--c-pale);
  transition: background-color 0.16s ease, border-color 0.16s ease;
}

.home-rail__link:hover,
.home-rail__link:focus-visible {
  border-left-color: var(--c-gold);
  background: rgba(30, 91, 255, 0.16);
}

.home-rail__num {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-volt-soft);
  transition: color 0.16s ease;
}

.home-rail__link:hover .home-rail__num,
.home-rail__link:focus-visible .home-rail__num {
  color: var(--c-gold);
}

.home-rail__txt {
  font-size: 14px;
  line-height: 1.6;
}

.home-collage {
  display: grid;
  gap: 12px;
}

.home-collage__stage {
  position: relative;
  margin: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 1px solid var(--c-line);
  background: linear-gradient(135deg, #0e2748 0%, #0a1a2f 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.home-collage__stage img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
}

.home-collage__arc {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.home-collage__coord {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 6px;
  min-height: 128px;
  padding: 18px;
  border: 1px solid var(--c-volt);
  background: linear-gradient(160deg, rgba(30, 91, 255, 0.25) 0%, rgba(10, 26, 47, 0.92) 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.home-collage__num {
  font-size: clamp(30px, 7vw, 46px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--c-gold);
}

.home-collage__cap {
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-pale);
  opacity: 0.85;
}

.home-collage__status {
  padding: 16px 18px;
  border: 1px solid var(--c-line);
  background: rgba(10, 26, 47, 0.7);
}

.home-collage__status p {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-pale);
  opacity: 0.8;
}

/* ===== 通用章节头 ===== */

.home-rails,
.home-shift,
.home-coords,
.home-start,
.home-coda {
  padding-block: var(--home-pad);
}

.home-shift,
.home-coords,
.home-start {
  border-top: 1px solid var(--c-line);
}

.home-sec-head {
  max-width: 760px;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.home-sec-coord {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-gold);
}

.home-sec-head h2 {
  margin: 0 0 12px;
  font-family: var(--f-head);
  font-weight: 800;
  font-size: clamp(23px, 3.4vw, 34px);
  line-height: 1.24;
  color: #ffffff;
}

.home-sec-sub {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-pale);
  opacity: 0.82;
}

/* ===== 五栏 ===== */

.home-rails__map {
  margin: 0 0 20px;
  border: 1px solid var(--c-line);
  background: rgba(14, 39, 72, 0.4);
  overflow: hidden;
}

.home-rails__map img {
  display: block;
  width: 100%;
  height: auto;
}

.home-rails__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.home-rail-card a {
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
  padding: 18px 16px;
  border: 1px solid var(--c-line);
  background: linear-gradient(180deg, rgba(22, 59, 122, 0.22) 0%, rgba(14, 39, 72, 0.5) 100%);
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.home-rail-card a:hover,
.home-rail-card a:focus-visible {
  transform: translateY(-4px);
  border-color: var(--c-volt);
  background: linear-gradient(180deg, rgba(30, 91, 255, 0.24) 0%, rgba(14, 39, 72, 0.6) 100%);
}

.home-rail-card__num {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-gold);
}

.home-rail-card__name {
  font-family: var(--f-head);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  color: #ffffff;
}

.home-rail-card__desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-pale);
  opacity: 0.8;
}

/* ===== 路径变化 ===== */

.home-shift__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.home-shift__card {
  padding: 22px 20px;
  border: 1px solid var(--c-line);
  background: rgba(14, 39, 72, 0.5);
}

.home-shift__card--new {
  border-color: var(--c-volt);
  background: linear-gradient(160deg, rgba(30, 91, 255, 0.24) 0%, rgba(14, 39, 72, 0.62) 100%);
}

.home-shift__tag {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-slate);
}

.home-shift__card--new .home-shift__tag {
  color: var(--c-volt-soft);
}

.home-shift__big {
  margin: 10px 0 8px;
  font-family: var(--f-mono);
  font-size: clamp(36px, 6vw, 54px);
  font-weight: 700;
  line-height: 1;
  color: #ffffff;
}

.home-shift__card--new .home-shift__big {
  color: var(--c-gold);
}

.home-shift__txt {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-pale);
  opacity: 0.82;
}

.home-shift__foot {
  margin: 22px 0 0;
  max-width: 68ch;
  padding-left: 16px;
  border-left: 3px solid var(--c-volt);
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-pale);
  opacity: 0.85;
}

/* ===== 编号用法 ===== */

.home-coords__grid {
  display: grid;
  gap: 24px;
}

.home-coords__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--c-line);
}

.home-coords__item {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 15px 6px;
  border-bottom: 1px solid var(--c-line);
  transition: background-color 0.16s ease;
}

.home-coords__item:hover {
  background: rgba(30, 91, 255, 0.12);
}

.home-coords__no {
  position: relative;
  flex: 0 0 auto;
  min-width: 7ch;
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--c-volt-soft);
  transition: color 0.16s ease;
}

.home-coords__no::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -5px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.2s ease;
}

.home-coords__item:hover .home-coords__no {
  color: var(--c-gold);
}

.home-coords__item:hover .home-coords__no::after {
  transform: scaleX(1);
}

.home-coords__lb {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-pale);
  opacity: 0.85;
}

.home-coords__body p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-pale);
  opacity: 0.86;
}

.home-coords__body p:last-child {
  margin-bottom: 0;
}

/* ===== 起步路径 ===== */

.home-start__grid {
  display: grid;
  gap: 24px;
}

.home-steps {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: home-step;
  display: grid;
  gap: 12px;
}

.home-steps li {
  position: relative;
  counter-increment: home-step;
  padding: 16px 16px 16px 60px;
  border: 1px solid var(--c-line);
  background: rgba(14, 39, 72, 0.45);
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-pale);
}

.home-steps li::before {
  content: counter(home-step, decimal-leading-zero);
  position: absolute;
  left: 18px;
  top: 17px;
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-gold);
}

.home-steps a {
  color: var(--c-volt-soft);
  text-decoration: underline;
  text-decoration-color: rgba(127, 168, 255, 0.5);
  text-underline-offset: 3px;
  transition: color 0.16s ease, text-decoration-color 0.16s ease;
}

.home-steps a:hover,
.home-steps a:focus-visible {
  color: var(--c-gold);
  text-decoration-color: var(--c-gold);
}

.home-start__note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--c-moss);
  font-size: 13px;
  line-height: 1.8;
  color: var(--c-pale);
  opacity: 0.78;
}

.home-start__fig {
  margin: 0;
  border: 1px solid var(--c-line);
  background: rgba(14, 39, 72, 0.4);
  overflow: hidden;
}

.home-start__fig img {
  display: block;
  width: 100%;
  height: auto;
}

/* ===== 收束 ===== */

.home-coda {
  border-top: 1px solid var(--c-line);
  background: linear-gradient(180deg, #0e2748 0%, #0a1a2f 100%);
  padding-bottom: clamp(64px, 10vw, 128px);
}

.home-coda__fig {
  margin: 0;
  border: 1px solid var(--c-line);
  overflow: hidden;
}

.home-coda__fig img {
  display: block;
  width: 100%;
  height: auto;
  opacity: 0.85;
}

.home-coda__panel {
  position: relative;
  margin-top: -32px;
  margin-inline: clamp(0px, 3vw, 44px);
  padding: clamp(24px, 4vw, 40px);
  border-top: 3px solid var(--c-gold);
  background: var(--c-bone);
  color: var(--c-line);
}

.home-coda__coord {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-slate);
}

.home-coda__panel h2 {
  margin: 0 0 14px;
  font-family: var(--f-head);
  font-weight: 800;
  font-size: clamp(23px, 3.4vw, 32px);
  line-height: 1.26;
  color: var(--c-ink);
}

.home-coda__panel p {
  margin: 0 0 22px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-line);
}

.home-coda__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== 响应式 ===== */

@media (min-width: 640px) {
  .home-rails__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .home-shift__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .home-hero__grid {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }

  .home-collage {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    grid-template-rows: repeat(3, minmax(96px, auto));
  }

  .home-collage__stage {
    grid-column: 1 / 5;
    grid-row: 1 / 4;
    aspect-ratio: auto;
  }

  .home-collage__coord {
    grid-column: 5 / 7;
    grid-row: 1 / 3;
  }

  .home-collage__status {
    grid-column: 5 / 7;
    grid-row: 3 / 4;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .home-coords__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 40px;
    align-items: start;
  }

  .home-start__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 32px;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .home-rails__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .home-rails__map {
    margin-bottom: 24px;
  }
}

@media (max-width: 400px) {
  .home-steps li {
    padding-left: 48px;
  }

  .home-steps li::before {
    left: 14px;
  }
}