.page-home {
  --home-radius: 16px;
  --home-space: clamp(64px, 8vw, 124px);
  --on-mist-strong: #0A1626;
  --on-mist: #3B4F6E;
  --on-mist-weak: #6C7F9C;
  --hairline: 1px solid #1B2A44;
  display: block;
  background: var(--bg-deep);
  color: var(--ice-white);
  font-family: var(--font-body);
}

.page-home .display-xl {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.06;
  margin: 0;
}

.page-home .display-lg {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  font-size: clamp(27px, 4.2vw, 44px);
  margin: 10px 0 16px;
}

.page-home .heading-3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
}

.page-home .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ice-blue);
  opacity: 0.9;
  margin: 0;
}

.page-home .lede {
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.9;
  color: var(--frost-silver);
  max-width: var(--text-max);
  margin: 0;
}

.page-home .scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  z-index: 60;
  background: linear-gradient(90deg, var(--aurora-purple), var(--neon-cyan));
  transition: width 120ms linear;
}

/* ---------- 首屏 ---------- */

.page-home .home-hero {
  position: relative;
  padding: clamp(28px, 4vw, 52px) 0 clamp(56px, 7vw, 104px);
  isolation: isolate;
}

.page-home .hero-visual {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

.page-home .hero-visual-img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  object-position: 72% 50%;
  opacity: 0.5;
  filter: saturate(0.72) contrast(1.05);
}

.page-home .hero-visual-veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(5, 11, 24, 0.5) 0%, rgba(5, 11, 24, 0.9) 74%, var(--bg-deep) 100%),
    linear-gradient(118deg, rgba(142, 123, 242, 0.18) 0%, rgba(53, 240, 220, 0.06) 46%, rgba(5, 11, 24, 0) 72%);
}

.page-home .home-context {
  position: relative;
  margin-bottom: clamp(22px, 3.4vw, 40px);
}

.page-home .home-context .eyebrow {
  color: var(--frost-silver);
  opacity: 0.75;
}

.page-home .hero-collage {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-home .hero-collage > * {
  animation: home-rise 620ms cubic-bezier(0.22, 0.68, 0.32, 1) both;
}

.page-home .hero-collage > *:nth-child(1) { animation-delay: 40ms; }
.page-home .hero-collage > *:nth-child(2) { animation-delay: 140ms; }
.page-home .hero-collage > *:nth-child(3) { animation-delay: 220ms; }
.page-home .hero-collage > *:nth-child(4) { animation-delay: 300ms; }

@keyframes home-rise {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-home .hero-block {
  padding: clamp(20px, 3vw, 32px);
  border: var(--hairline);
  border-radius: var(--home-radius);
  background: rgba(11, 21, 38, 0.72);
}

.page-home .hero-block--lead {
  padding: 4px 0 8px;
  border: 0;
  background: transparent;
}

.page-home .hero-block--lead .display-xl {
  font-size: clamp(32px, 6.6vw, 64px);
  max-width: 17ch;
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.page-home .hero-block--lead .lede {
  max-width: 46ch;
}

.page-home .hero-block--status {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.page-home .hero-status-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--frost-silver);
}

.page-home .hero-entry-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-home .hero-entry-list li {
  padding-bottom: 12px;
  border-bottom: var(--hairline);
}

.page-home .hero-entry-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-home .hero-entry-list a {
  display: inline-block;
  font-size: 15px;
  line-height: 1.6;
  color: var(--ice-white);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-home .hero-entry-list a:hover {
  color: var(--ice-blue);
  border-bottom-color: var(--ice-blue);
}

.page-home .hero-block--figure {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
  background:
    linear-gradient(152deg, rgba(142, 123, 242, 0.18) 0%, rgba(53, 240, 220, 0.07) 56%, rgba(11, 21, 38, 0.7) 100%);
}

.page-home .hero-figure-value {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(44px, 9vw, 76px);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--neon-cyan);
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-home .hero-figure-value span {
  font-size: 0.46em;
  color: var(--ice-white);
}

.page-home .hero-figure-label {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--frost-silver);
}

/* ---------- 章节索引 ---------- */

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

/* ---------- 通用分区 ---------- */

.page-home .home-section {
  position: relative;
  padding: var(--home-space) 0;
}

.page-home .home-section--deep {
  background: var(--bg-night);
  border-top: var(--hairline);
}

.page-home .home-section--mist {
  background: var(--mist-face);
  color: var(--on-mist);
  border-top: 1px solid rgba(10, 22, 38, 0.08);
  border-bottom: 1px solid rgba(10, 22, 38, 0.08);
}

.page-home .home-section--mist .eyebrow {
  color: #2E5E96;
  opacity: 1;
}

.page-home .home-section--mist .display-lg {
  color: var(--on-mist-strong);
}

.page-home .home-section--mist .lede {
  color: var(--on-mist);
}

.page-home .section-head {
  max-width: 58ch;
  margin-bottom: clamp(30px, 4.6vw, 54px);
}

.page-home .image-caption {
  display: block;
  margin: 0;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--frost-silver);
  background: var(--bg-night);
  border-top: var(--hairline);
}

/* ---------- 校订时间轴 ---------- */

.page-home .revision-layout {
  display: grid;
  gap: clamp(30px, 4.6vw, 52px);
}

.page-home .revision-head {
  max-width: 46ch;
}

.page-home .revision-track {
  --track-pad: clamp(18px, 3vw, 28px);
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--track-pad);
  border-left: var(--hairline);
  display: grid;
  gap: clamp(26px, 3.6vw, 42px);
}

.page-home .revision-item {
  position: relative;
}

.page-home .revision-item::before {
  content: "";
  position: absolute;
  top: 7px;
  left: calc(var(--track-pad) * -1 - 4.5px);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bg-deep);
  box-shadow: inset 0 0 0 1px var(--ice-blue), 0 0 0 4px rgba(61, 155, 240, 0.1);
}

.page-home .revision-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--aurora-purple);
  margin-bottom: 8px;
}

.page-home .revision-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--frost-silver);
}

.page-home .revision-figure {
  margin: 0;
  border: var(--hairline);
  border-radius: var(--home-radius);
  overflow: hidden;
  background: var(--bg-night);
}

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

/* ---------- 积分比率 ---------- */

.page-home .ratio-layout {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
}

.page-home .ratio-figure {
  padding-bottom: clamp(8px, 1.6vw, 16px);
}

.page-home .ratio-number {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 14px 0 4px;
  font-family: var(--font-mono);
  font-weight: 500;
  line-height: 0.88;
  letter-spacing: -0.03em;
}

.page-home .ratio-number-value {
  font-size: clamp(84px, 15vw, 164px);
  color: var(--on-mist-strong);
}

.page-home .ratio-number-unit {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: clamp(15px, 2vw, 20px);
  letter-spacing: 0.14em;
  color: var(--ice-blue);
}

.page-home .ratio-caption {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid rgba(10, 22, 38, 0.14);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--on-mist-weak);
}

.page-home .ratio-copy {
  align-self: start;
}

.page-home .ratio-copy-note {
  margin: 16px 0 26px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--on-mist);
  max-width: 44ch;
}

.page-home .ratio-visual {
  margin: 0;
  border-radius: var(--home-radius);
  overflow: hidden;
  border: 1px solid rgba(10, 22, 38, 0.1);
  background: var(--bg-night);
}

.page-home .ratio-visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-home .ratio-data {
  border-top: 1px solid rgba(10, 22, 38, 0.14);
}

.page-home .ratio-data-row {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(10, 22, 38, 0.14);
}

.page-home .ratio-data-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--on-mist-weak);
}

.page-home .ratio-data-val {
  font-size: 15px;
  line-height: 1.75;
  color: var(--on-mist-strong);
}

/* ---------- 活动周期 ---------- */

.page-home .cycle-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--crack-blue);
  border: var(--hairline);
  border-radius: var(--home-radius);
  overflow: hidden;
}

.page-home .cycle-item {
  position: relative;
  padding: clamp(22px, 3vw, 34px) clamp(18px, 2.4vw, 28px);
  background: var(--bg-deep);
}

.page-home .cycle-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, var(--aurora-purple), var(--neon-cyan));
}

.page-home .cycle-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--ice-blue);
  margin-bottom: 18px;
}

.page-home .cycle-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--frost-silver);
}

/* ---------- 双端一致 ---------- */

.page-home .dual-layout {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
}

.page-home .dual-visual {
  margin: 0;
  border: var(--hairline);
  border-radius: var(--home-radius);
  overflow: hidden;
  background: var(--bg-night);
}

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

.page-home .dual-copy .btn {
  margin-top: 24px;
}

.page-home .dual-panels {
  display: grid;
  gap: 16px;
}

.page-home .dual-panel {
  padding: clamp(22px, 2.8vw, 32px);
  border: var(--hairline);
  border-radius: var(--home-radius);
  background: linear-gradient(158deg, rgba(142, 123, 242, 0.12) 0%, rgba(11, 21, 38, 0.72) 62%);
}

.page-home .dual-panel-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--neon-cyan);
}

.page-home .dual-panel-value {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.4vw, 22px);
  letter-spacing: -0.01em;
  color: var(--ice-white);
}

.page-home .dual-panel-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--frost-silver);
}

/* ---------- 联系我们 ---------- */

.page-home .reach-grid {
  display: grid;
  border-top: var(--hairline);
}

.page-home .reach-item {
  padding: 22px 0;
  border-bottom: var(--hairline);
}

.page-home .reach-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ice-blue);
}

.page-home .reach-value {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.5;
  color: var(--ice-white);
  overflow-wrap: break-word;
}

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

.page-home .reach-actions {
  margin-top: clamp(28px, 4vw, 44px);
}

/* ---------- 返回顶部 ---------- */

.page-home .to-top {
  position: fixed;
  right: clamp(16px, 2.6vw, 30px);
  bottom: clamp(16px, 2.6vw, 30px);
  z-index: 50;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: var(--hairline);
  border-radius: 50%;
  background: rgba(11, 21, 38, 0.9);
  color: var(--ice-white);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms ease, color 180ms ease, border-color 180ms ease;
}

.page-home .to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.page-home .to-top:hover {
  border-color: var(--ice-blue);
  color: var(--ice-blue);
}

/* ---------- 断点 ---------- */

@media (min-width: 640px) {
  .page-home .ratio-data-row {
    grid-template-columns: 116px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }

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

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

  .page-home .reach-item:nth-child(odd) {
    padding-right: clamp(20px, 3vw, 40px);
  }

  .page-home .reach-item:nth-child(even) {
    padding-left: clamp(20px, 3vw, 40px);
    border-left: var(--hairline);
  }
}

@media (min-width: 760px) {
  .page-home .cycle-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-home .hero-collage {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    grid-template-rows: minmax(150px, auto) minmax(150px, auto) minmax(150px, auto);
    gap: 18px;
  }

  .page-home .hero-block--lead {
    grid-column: 1 / 8;
    grid-row: 1 / 4;
    padding-right: clamp(20px, 3vw, 44px);
    align-self: center;
  }

  .page-home .hero-block--status {
    grid-column: 8 / 13;
    grid-row: 1 / 2;
    margin-top: -6px;
  }

  .page-home .hero-block--entry {
    grid-column: 8 / 13;
    grid-row: 2 / 3;
  }

  .page-home .hero-block--figure {
    grid-column: 8 / 13;
    grid-row: 3 / 4;
    margin-bottom: 10px;
  }
}

@media (min-width: 960px) {
  .page-home .revision-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    grid-template-areas:
      "head figure"
      "track figure";
    align-items: start;
    column-gap: clamp(36px, 5vw, 76px);
    row-gap: clamp(28px, 3.4vw, 44px);
  }

  .page-home .revision-head {
    grid-area: head;
  }

  .page-home .revision-track {
    grid-area: track;
  }

  .page-home .revision-figure {
    grid-area: figure;
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-home .ratio-layout {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: clamp(28px, 4vw, 56px);
    row-gap: clamp(32px, 4vw, 56px);
    align-items: start;
  }

  .page-home .ratio-figure {
    grid-column: 1 / 6;
    grid-row: 1;
  }

  .page-home .ratio-copy {
    grid-column: 6 / 13;
    grid-row: 1;
  }

  .page-home .ratio-visual {
    grid-column: 1 / 6;
    grid-row: 2;
  }

  .page-home .ratio-data {
    grid-column: 6 / 13;
    grid-row: 2;
  }

  .page-home .dual-layout {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: clamp(32px, 4vw, 60px);
    row-gap: clamp(30px, 3.6vw, 48px);
    align-items: start;
  }

  .page-home .dual-visual {
    grid-column: 1 / 7;
    grid-row: 1;
  }

  .page-home .dual-copy {
    grid-column: 7 / 13;
    grid-row: 1;
  }

  .page-home .dual-panels {
    grid-column: 1 / 13;
    grid-row: 2;
  }
}

@media (min-width: 1120px) {
  .page-home .cycle-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .cycle-item:nth-child(odd) {
    padding-bottom: clamp(40px, 4.6vw, 62px);
  }

  .page-home .cycle-item:nth-child(even) {
    padding-top: clamp(40px, 4.6vw, 62px);
  }
}

@media (min-width: 1560px) {
  .page-home .chapter-rail {
    display: flex;
    flex-direction: column;
    gap: 2px;
    position: fixed;
    right: 28px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 40;
    padding: 14px 0 14px 16px;
    border-left: var(--hairline);
  }

  .page-home .chapter-link {
    display: block;
    padding: 6px 0;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--frost-silver);
    text-decoration: none;
    opacity: 0.55;
    white-space: nowrap;
    transition: opacity 200ms ease, color 200ms ease;
  }

  .page-home .chapter-link:hover,
  .page-home .chapter-link.is-active {
    opacity: 1;
    color: var(--neon-cyan);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .hero-collage > * {
    animation: none;
  }

  .page-home .revision-figure {
    position: static;
  }

  .page-home .scroll-progress {
    transition: none;
  }
}