.page-home {
  --ph-line: rgba(16, 20, 24, .14);
  --ph-line-strong: rgba(16, 20, 24, .30);
  --ph-rail: #0E2E3A;
  --ph-rail-ink: #F4F1EA;
  display: grid;
  grid-template-columns: 1fr;
  background: var(--moon);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-17);
  line-height: 1.9;
}

.page-home a:focus-visible,
.page-home button:focus-visible,
.page-home label:focus-visible,
.page-home input:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 2px;
}

/* ---------- 左侧品牌叙事窄栏 ---------- */
.page-home .home-rail {
  position: relative;
  background: var(--ph-rail);
  color: var(--ph-rail-ink);
  padding: clamp(1.75rem, 7vw, 3rem) clamp(1.25rem, 6vw, 2.5rem) clamp(2rem, 7vw, 2.75rem);
  display: flex;
  flex-direction: column;
  gap: clamp(1.5rem, 5vw, 2.5rem);
  overflow: hidden;
}

.page-home .home-rail::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(to right, rgba(244, 241, 234, .065) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(to bottom, rgba(244, 241, 234, .065) 0 1px, transparent 1px 64px);
  pointer-events: none;
}

.page-home .home-rail > * {
  position: relative;
  z-index: 1;
}

.page-home .rail-crumb {
  margin: 0 0 clamp(1rem, 4vw, 1.75rem);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: rgba(244, 241, 234, .58);
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
}

.page-home .rail-crumb a {
  color: inherit;
  text-decoration: none;
}

.page-home .rail-crumb a:hover {
  color: var(--cinnabar);
}

.page-home .rail-title {
  margin: 0 0 clamp(1rem, 3vw, 1.5rem);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.5rem, 10vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -.01em;
}

.page-home .rail-lead {
  margin: 0;
  max-width: 32ch;
  font-size: var(--fs-17);
  line-height: 1.9;
  color: rgba(244, 241, 234, .82);
}

.page-home .rail-index {
  display: flex;
  flex-direction: column;
}

.page-home .rail-entry {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  align-items: baseline;
  padding: .95rem 0;
  border-top: 1px solid rgba(244, 241, 234, .18);
  text-decoration: none;
  color: inherit;
  transition: transform 200ms var(--ease), background-color 200ms var(--ease);
}

.page-home .rail-entry:last-child {
  border-bottom: 1px solid rgba(244, 241, 234, .18);
}

.page-home .rail-entry:hover {
  transform: translateX(6px);
  background-color: rgba(244, 241, 234, .05);
}

.page-home .rail-entry__no {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: var(--cinnabar);
}

.page-home .rail-entry__title {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-17);
  line-height: 1.35;
  letter-spacing: -.005em;
}

.page-home .rail-entry__note {
  grid-column: 2;
  grid-row: 2;
  margin-top: .25rem;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.7;
  letter-spacing: .04em;
  color: rgba(244, 241, 234, .62);
}

.page-home .rail-foot {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: rgba(244, 241, 234, .55);
}

/* ---------- 右侧内容流 ---------- */
.page-home .home-flow {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.page-home .home-hero {
  border-bottom: 1px solid var(--ph-line);
}

.page-home .hero-figure {
  position: relative;
  margin: 0;
  background: var(--dai);
}

.page-home .hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-home .hero-glass {
  position: absolute;
  left: clamp(.75rem, 3vw, 1.75rem);
  right: clamp(.75rem, 3vw, 1.75rem);
  bottom: clamp(.75rem, 3vw, 1.75rem);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .35rem 1.5rem;
  padding: .8rem 1rem;
  background: rgba(244, 241, 234, .84);
  border: 1px solid var(--ph-line-strong);
  backdrop-filter: blur(10px);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  transition: background-color 200ms var(--ease), opacity 200ms var(--ease);
}

.page-home .hero-glass:hover {
  background: rgba(244, 241, 234, .95);
}

.page-home .hero-glass__item {
  white-space: nowrap;
}

.page-home .hero-glass__item b {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-22);
  letter-spacing: -.01em;
  margin-right: .18em;
}

.page-home .home-section {
  padding: clamp(2.75rem, 8vw, 5rem) clamp(1.25rem, 6vw, 3.75rem);
  border-bottom: 1px solid var(--ph-line);
  scroll-margin-top: calc(var(--header-h) + 1.25rem);
}

.page-home .home-section--paper {
  background: var(--paper);
}

.page-home .home-section--deep {
  background: var(--dai);
  color: var(--moon);
  border-bottom-color: rgba(244, 241, 234, .18);
}

.page-home .home-section--contact {
  background: var(--moon);
}

.page-home .home-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 6vw, 3rem);
  align-items: start;
}

.page-home .g-text {
  min-width: 0;
}

.page-home .g-media {
  min-width: 0;
}

.page-home .section-no {
  display: inline-block;
  margin: 0 0 clamp(1rem, 3vw, 1.4rem);
  padding: .28rem .6rem;
  background: var(--ochre);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .14em;
  line-height: 1.4;
}

.page-home .home-section--deep .section-no {
  background: var(--cinnabar);
}

.page-home .section-title {
  margin: 0 0 clamp(1rem, 3vw, 1.4rem);
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.55rem, 5vw, 2.125rem);
  line-height: 1.18;
  letter-spacing: -.01em;
}

.page-home .section-title--deep {
  max-width: 24ch;
}

.page-home .ph-prose {
  max-width: 34em;
  font-size: var(--fs-17);
  line-height: 1.9;
}

.page-home .ph-prose p {
  margin: 0 0 1.2em;
}

.page-home .ph-prose p:last-child {
  margin-bottom: 0;
}

.page-home .ph-prose--deep {
  color: rgba(244, 241, 234, .82);
  margin-bottom: clamp(1.25rem, 4vw, 1.75rem);
}

.page-home .ph-prose--deep + .ph-prose--deep {
  margin-top: clamp(1.25rem, 4vw, 1.75rem);
}

.page-home .tag-row {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: clamp(1.25rem, 4vw, 1.75rem) 0 0;
  padding: 0;
}

.page-home .tag-row li {
  padding: .3rem .65rem;
  border: 1px solid var(--ph-line-strong);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--ink-soft);
}

.page-home .text-link {
  display: inline-block;
  margin-top: clamp(1.25rem, 4vw, 1.75rem);
  padding-bottom: .18rem;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: .06em;
  color: var(--cinnabar-deep);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color 200ms var(--ease);
}

.page-home .text-link:hover {
  color: var(--cinnabar);
}

.page-home .text-link--invert {
  color: var(--moon);
}

.page-home .text-link--invert:hover {
  color: var(--cinnabar);
}

.page-home .ph-media {
  margin: 0;
}

.page-home .ph-media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--ph-line-strong);
  background: var(--paper);
  object-fit: cover;
}

.page-home .ph-media figcaption {
  margin-top: .65rem;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--ink-soft);
}

/* ---------- 状态切换组件 ---------- */
.page-home .switch {
  position: relative;
  margin-top: clamp(1.5rem, 5vw, 2rem);
}

.page-home .switch input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  margin: 0;
  pointer-events: none;
}

.page-home .switch-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.page-home .switch-tabs label {
  display: inline-block;
  padding: .45rem .85rem;
  border: 1px solid var(--ph-line-strong);
  background: transparent;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  line-height: 1.5;
  cursor: pointer;
  transition: background-color 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-home .switch-tabs label:hover {
  border-color: var(--cinnabar);
  color: var(--cinnabar-deep);
}

.page-home #path-old:checked ~ .switch-tabs label[for="path-old"],
.page-home #path-new:checked ~ .switch-tabs label[for="path-new"],
.page-home #scene-long:checked ~ .switch-tabs label[for="scene-long"],
.page-home #scene-mobile:checked ~ .switch-tabs label[for="scene-mobile"],
.page-home #scene-first:checked ~ .switch-tabs label[for="scene-first"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--moon);
}

.page-home .switch-panel {
  display: none;
  margin-top: clamp(1rem, 3vw, 1.4rem);
  padding: clamp(1rem, 3.5vw, 1.5rem);
  background: var(--paper);
  border: 1px solid var(--ph-line-strong);
  border-left: 3px solid var(--ochre);
}

.page-home #path-old:checked ~ .path-panel--old,
.page-home #path-new:checked ~ .path-panel--new,
.page-home #scene-long:checked ~ .scene-panel--long,
.page-home #scene-mobile:checked ~ .scene-panel--mobile,
.page-home #scene-first:checked ~ .scene-panel--first {
  display: block;
}

.page-home #path-new:checked ~ .path-panel--new {
  border-left-color: var(--cinnabar);
}

.page-home .switch input:focus-visible ~ .switch-tabs label {
  outline: 2px solid var(--cinnabar);
  outline-offset: 2px;
}

.page-home .path-summary {
  margin: 0;
  max-width: 34em;
  font-size: var(--fs-17);
  line-height: 1.85;
}

.page-home .path-steps {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem .35rem;
  margin: 1rem 0 0;
  padding: 0;
}

.page-home .path-steps li {
  padding: .4rem .7rem;
  border: 1px solid var(--ph-line);
  background: var(--moon);
  font-size: var(--fs-13);
  line-height: 1.6;
  color: var(--ink);
}

.page-home .path-steps li + li::before {
  content: "";
}

.page-home .path-panel--new .path-steps li {
  border-color: var(--cinnabar);
  color: var(--cinnabar-deep);
  background: rgba(228, 87, 46, .06);
}

/* ---------- 规模数据 ---------- */
.page-home .stat-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0 0 clamp(1.5rem, 5vw, 2rem);
  padding: 0;
  background: rgba(244, 241, 234, .2);
  border: 1px solid rgba(244, 241, 234, .2);
}

.page-home .stat-grid li {
  background: var(--dai);
  padding: clamp(1rem, 3.5vw, 1.5rem);
}

.page-home .stat-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 5.5vw, 2.5rem);
  line-height: 1;
  letter-spacing: -.01em;
}

.page-home .stat-num em {
  font-style: normal;
  font-size: .45em;
  font-weight: 700;
  letter-spacing: .02em;
  margin-left: .15em;
  color: rgba(244, 241, 234, .72);
}

.page-home .stat-label {
  display: block;
  margin-top: .6rem;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  line-height: 1.7;
  color: rgba(244, 241, 234, .68);
}

/* ---------- 联系区块 ---------- */
.page-home .contact-slab {
  display: grid;
  gap: clamp(.85rem, 3vw, 1.15rem);
  margin-top: clamp(1.5rem, 5vw, 2rem);
  padding: clamp(1.25rem, 4vw, 2rem);
  background: var(--paper);
  border: 1px solid var(--ph-line-strong);
}

.page-home .contact-line {
  display: grid;
  grid-template-columns: 1fr;
  gap: .4rem;
  align-items: center;
  padding-bottom: clamp(.85rem, 3vw, 1.15rem);
  border-bottom: 1px solid var(--ph-line);
}

.page-home .contact-line:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-home .contact-key {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: var(--ink-soft);
}

.page-home .contact-plain {
  font-size: var(--fs-17);
  line-height: 1.75;
}

.page-home .copy-chip {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .5rem .75rem;
  padding: .5rem .85rem;
  background: var(--moon);
  border: 1px solid var(--ph-line-strong);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: .04em;
  line-height: 1.6;
  text-decoration: none;
  text-align: left;
  cursor: pointer;
  transition: border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-home .copy-chip:hover {
  border-color: var(--cinnabar);
}

.page-home .copy-chip-hint {
  padding-left: .75rem;
  border-left: 1px solid var(--ph-line);
  font-size: var(--fs-12);
  color: var(--ink-soft);
}

.page-home .copy-chip[data-copied] .copy-chip-hint {
  color: var(--moss);
  border-left-color: var(--moss);
}

/* ---------- 桌面分栏 ---------- */
@media (min-width: 900px) {
  .page-home .home-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-home .home-grid .g-text {
    grid-column: 1 / span 6;
    grid-row: 1;
  }

  .page-home .home-grid .g-media {
    grid-column: 8 / span 5;
    grid-row: 1;
  }

  .page-home .home-grid--flip .g-text {
    grid-column: 7 / span 6;
  }

  .page-home .home-grid--flip .g-media {
    grid-column: 1 / span 5;
  }

  .page-home .contact-line {
    grid-template-columns: 8rem 1fr;
    gap: 1rem;
  }

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

@media (min-width: 1024px) {
  .page-home {
    grid-template-columns: 38fr 62fr;
    align-items: start;
  }

  .page-home .home-rail {
    position: sticky;
    top: var(--header-h);
    min-height: calc(100vh - var(--header-h));
    padding: clamp(2.5rem, 3.4vw, 3.5rem) clamp(1.5rem, 2.6vw, 2.75rem);
    justify-content: space-between;
  }

  .page-home .rail-title {
    font-size: clamp(2.75rem, 3.6vw, 3.5rem);
  }

  .page-home .home-flow {
    border-left: 1px solid var(--ph-line);
  }

  .page-home .hero-figure img {
    aspect-ratio: 8 / 3;
  }
}

@media (max-width: 640px) {
  .page-home .hero-glass {
    position: static;
    border: 0;
    border-top: 1px solid var(--ph-line);
    background: var(--paper);
    backdrop-filter: none;
    gap: .5rem .9rem;
    padding: .85rem 1rem;
  }

  .page-home .hero-glass__item b {
    font-size: var(--fs-17);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .rail-entry,
  .page-home .hero-glass,
  .page-home .switch-tabs label,
  .page-home .copy-chip,
  .page-home .text-link {
    transition: none !important;
  }
}