.page-home {
  --rail-w: 172px;
  --home-edge: rgba(56, 225, 210, .30);
  --home-card-bg: linear-gradient(155deg, var(--ink-700) 0%, var(--ink-800) 100%);
  background: var(--ink-900);
  color: var(--light-100);
  font-family: var(--font-sans);
  overflow-x: clip;
}

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

.page-home .mono {
  font-family: var(--font-mono);
  letter-spacing: .06em;
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  padding-block: clamp(24px, 5vw, 56px) clamp(38px, 6.5vw, 84px);
  border-bottom: 1px solid var(--home-edge);
  background:
    radial-gradient(120% 90% at 88% 10%, rgba(56, 225, 210, .10), transparent 62%),
    radial-gradient(90% 70% at 4% 94%, rgba(255, 122, 84, .07), transparent 66%),
    var(--ink-900);
}

.page-home .hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-home .hero-copy {
  display: grid;
  gap: 18px;
  align-content: center;
}

.page-home .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--mist-400);
}

.page-home .breadcrumb-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .breadcrumb-list [aria-current="page"] {
  color: var(--neon-cyan);
}

.page-home .hero-title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 60px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--light-100);
  max-width: 18ch;
}

.page-home .hero-lede {
  margin: 0;
  max-width: 32ch;
  color: var(--mist-400);
  font-size: clamp(15.5px, 1.7vw, 18px);
  line-height: 1.8;
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.page-home .hero-visual {
  position: relative;
  margin: 0;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
  box-shadow: var(--shadow-lift);
}

.page-home .hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .94;
}

.page-home .hero-halo {
  position: absolute;
  inset: 0;
  pointer-events: none;
  mix-blend-mode: screen;
  animation: home-halo 9s ease-in-out infinite alternate;
  background:
    radial-gradient(48% 40% at 72% 24%, rgba(56, 225, 210, .44), transparent 70%),
    radial-gradient(44% 36% at 22% 78%, rgba(255, 122, 84, .30), transparent 72%);
}

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

@keyframes home-halo {
  from { opacity: .5; }
  to { opacity: 1; }
}

/* ---------- 主体两栏 ---------- */
.page-home .home-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 44px);
  padding-block: clamp(30px, 5vw, 64px);
}

/* 章节轨道 */
.page-home .rail {
  order: -1;
  min-width: 0;
}

.page-home .rail-title {
  display: none;
  margin: 0;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--mist-400);
}

.page-home .rail-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
}

.page-home .rail-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist-400);
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: 2px;
  transition: color .18s var(--ease-hall), border-color .18s var(--ease-hall), background .18s var(--ease-hall);
}

.page-home .rail-link:hover,
.page-home .rail-link:focus-visible {
  color: var(--neon-cyan);
  border-color: rgba(56, 225, 210, .5);
  background: rgba(56, 225, 210, .07);
}

.page-home .rail-link:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 2px;
}

/* 章节 */
.page-home .chapters {
  min-width: 0;
}

.page-home .chapter {
  position: relative;
  padding-block: clamp(28px, 4.5vw, 54px);
  border-top: 1px solid rgba(27, 58, 85, .95);
}

.page-home .chapter:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-home .chapter + .chapter::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--neon-cyan), rgba(56, 225, 210, 0));
}

.page-home .chapter-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2vw, 20px);
  align-items: start;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-home .chapter-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: 2px solid var(--steel-600);
  border-radius: 2px;
  background: var(--ink-800);
  box-shadow: 0 0 0 4px rgba(56, 225, 210, .05);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--neon-cyan);
}

.page-home .h2 {
  margin: 0 0 8px;
  font-size: clamp(21px, 2.8vw, 32px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--light-100);
}

.page-home .chapter-lede {
  margin: 0;
  max-width: 52ch;
  color: var(--mist-400);
  font-size: 15px;
  line-height: 1.78;
}

/* ---------- 01 四条入口 ---------- */
.page-home .path-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(12px, 2vw, 18px);
}

.page-home .path-card {
  display: grid;
  gap: 9px;
  align-content: start;
  padding: clamp(18px, 2.4vw, 26px);
  border: var(--line);
  border-radius: var(--radius);
  background: var(--home-card-bg);
  box-shadow: var(--shadow-hard);
  transition: transform .22s var(--ease-hall), border-color .22s var(--ease-hall);
}

.page-home .path-card::before {
  content: "";
  width: 38px;
  height: 3px;
  border-radius: 2px;
  background: var(--neon-cyan);
}

.page-home .path-card:nth-child(2)::before { background: var(--amber); }
.page-home .path-card:nth-child(3)::before { background: var(--coral); }
.page-home .path-card:nth-child(4)::before { background: var(--mist-400); }

.page-home .path-card:hover {
  transform: translateY(-3px);
  border-color: rgba(56, 225, 210, .55);
}

.page-home .path-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--mist-400);
}

.page-home .path-title {
  margin: 0;
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 700;
  line-height: 1.35;
}

.page-home .path-text {
  margin: 0;
  color: var(--mist-400);
  font-size: 14.5px;
  line-height: 1.78;
}

.page-home .path-link {
  justify-self: start;
  margin-top: 2px;
  padding-bottom: 2px;
  color: var(--neon-cyan);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 225, 210, .42);
  transition: border-color .18s var(--ease-hall), color .18s var(--ease-hall);
}

.page-home .path-link:hover,
.page-home .path-link:focus-visible {
  border-bottom-color: var(--neon-cyan);
  color: var(--light-100);
}

/* ---------- 02 栏目双栏预演 ---------- */
.page-home .showcase {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 32px);
}

.page-home .shot {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
}

.page-home .shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-home .shot--sliced {
  clip-path: polygon(0 2.5%, 100% 0%, 100% 97.5%, 0 100%);
}

.page-home .shot-cap {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 5px 9px;
  border: 1px solid var(--steel-600);
  background: rgba(5, 11, 24, .84);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--mist-400);
}

.page-home .mock {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  padding: clamp(14px, 2vw, 20px);
  border: var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
}

.page-home .mock-rail {
  display: flex;
  gap: 6px;
  overflow-x: auto;
}

.page-home .mock-tab {
  padding: 8px 10px;
  border: 1px solid var(--steel-600);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--mist-400);
  white-space: nowrap;
}

.page-home .mock-tab.is-on {
  background: var(--neon-cyan);
  border-color: var(--neon-cyan);
  color: var(--ink-900);
  font-weight: 700;
}

.page-home .mock-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-home .mock-card {
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--steel-600);
  border-radius: 2px;
  background: linear-gradient(160deg, rgba(46, 58, 92, .58), rgba(10, 21, 38, .92));
}

.page-home .mock-card:nth-child(2) {
  border-color: rgba(56, 225, 210, .38);
}

.page-home .mock-card-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.page-home .mock-badge {
  padding: 2px 6px;
  border: 1px solid var(--steel-600);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .05em;
  color: var(--amber);
}

.page-home .mock-type {
  font-size: 14px;
  font-weight: 500;
  color: var(--light-100);
}

.page-home .mock-meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .05em;
  color: var(--mist-400);
}

.page-home .mock-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 10px;
  border-top: 1px dashed rgba(27, 58, 85, .95);
}

.page-home .toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 3px 5px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: 12.5px;
  color: var(--mist-400);
  cursor: pointer;
  transition: color .18s var(--ease-hall);
}

.page-home .toggle:hover {
  color: var(--light-100);
}

.page-home .toggle:focus-within {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 2px;
}

.page-home .toggle-input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
}

.page-home .toggle-pill {
  width: 14px;
  height: 14px;
  border: 1px solid var(--mist-400);
  border-radius: 2px;
  background: transparent;
  transition: background .18s var(--ease-hall), border-color .18s var(--ease-hall), box-shadow .18s var(--ease-hall);
}

.page-home .toggle-input:checked ~ .toggle-pill {
  background: var(--amber);
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(242, 178, 76, .16);
}

.page-home .toggle-input:checked ~ .toggle-label {
  color: var(--amber);
}

.page-home .toggle--save .toggle-input:checked ~ .toggle-pill {
  background: var(--coral);
  border-color: var(--coral);
  box-shadow: 0 0 0 3px rgba(255, 122, 84, .16);
}

.page-home .toggle--save .toggle-input:checked ~ .toggle-label {
  color: var(--coral);
}

/* ---------- 03 三步 ---------- */
.page-home .chapter--band {
  padding: clamp(20px, 3.4vw, 38px);
  border: var(--line);
  border-radius: var(--radius);
  background: linear-gradient(115deg, var(--ink-800) 0%, var(--violet-slate) 132%);
  box-shadow: var(--shadow-hard);
}

.page-home .chapter--band::before {
  display: none;
}

.page-home .steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.4vw, 24px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .step {
  padding-top: 16px;
  border-top: 2px solid rgba(255, 122, 84, .55);
}

.page-home .step:nth-child(2) { border-top-color: rgba(242, 178, 76, .6); }
.page-home .step:nth-child(3) { border-top-color: rgba(56, 225, 210, .62); }

.page-home .step-num {
  display: inline-block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--coral);
}

.page-home .step:nth-child(2) .step-num { color: var(--amber); }
.page-home .step:nth-child(3) .step-num { color: var(--neon-cyan); }

.page-home .step h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--light-100);
}

.page-home .step p {
  margin: 0;
  color: var(--mist-400);
  font-size: 14.5px;
  line-height: 1.78;
}

.page-home .chapter-foot {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  font-size: 14px;
}

.page-home .text-link {
  color: var(--neon-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 225, 210, .42);
}

.page-home .text-link:hover,
.page-home .text-link:focus-visible {
  border-bottom-color: var(--neon-cyan);
  color: var(--light-100);
}

/* ---------- 04 接入方 ---------- */
.page-home .vendors {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 32px);
}

.page-home .vendors-main {
  min-width: 0;
}

.page-home .wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(62px, 1fr));
  gap: 7px;
}

.page-home .wall-cell {
  padding: 10px 4px;
  border: 1px solid var(--steel-600);
  border-radius: 2px;
  background: rgba(16, 34, 54, .5);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--mist-400);
  transition: border-color .18s var(--ease-hall), color .18s var(--ease-hall), background .18s var(--ease-hall);
}

.page-home .wall-cell:hover {
  border-color: var(--neon-cyan);
  background: rgba(56, 225, 210, .09);
  color: var(--light-100);
}

.page-home .wall-cell--more {
  border-style: dashed;
  border-color: rgba(242, 178, 76, .6);
  color: var(--amber);
}

.page-home .version-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 14px;
  padding: 12px 14px;
  border: var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
}

.page-home .version-tag {
  padding: 3px 7px;
  border: 1px solid var(--steel-600);
  border-radius: 2px;
  background: rgba(2, 6, 14, .5);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--light-100);
}

.page-home .version-note {
  font-size: 12.5px;
  color: var(--mist-400);
}

.page-home .vendors-note {
  margin: 14px 0 0;
  color: var(--mist-400);
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- 05 客户端 ---------- */
.page-home .trio {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
}

.page-home .trio-main {
  min-width: 0;
}

.page-home .shot--tall img {
  aspect-ratio: 5 / 6;
  object-fit: cover;
}

.page-home .pledge-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .pledge-list li {
  padding-left: 15px;
  border-left: 2px solid var(--steel-600);
}

.page-home .pledge-list li:nth-child(2) { border-left-color: rgba(56, 225, 210, .55); }
.page-home .pledge-list li:nth-child(3) { border-left-color: rgba(242, 178, 76, .6); }
.page-home .pledge-list li:nth-child(4) { border-left-color: rgba(255, 122, 84, .6); }

.page-home .pledge-list h3 {
  margin: 0 0 5px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--light-100);
}

.page-home .pledge-list p {
  margin: 0;
  color: var(--mist-400);
  font-size: 14.5px;
  line-height: 1.78;
}

.page-home .closing {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: clamp(24px, 3.6vw, 36px);
  padding: clamp(18px, 3vw, 28px);
  border: 2px solid var(--steel-600);
  border-radius: var(--radius);
  background: linear-gradient(120deg, var(--ink-700), rgba(46, 58, 92, .85));
  box-shadow: var(--shadow-hard);
}

.page-home .closing-text {
  margin: 0;
  max-width: 34ch;
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--light-100);
}

.page-home .closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-home .fine-print {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--mist-400);
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-home .mock {
    grid-template-columns: 104px minmax(0, 1fr);
  }

  .page-home .mock-rail {
    flex-direction: column;
    overflow: visible;
  }

  .page-home .wall {
    grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
  }
}

@media (min-width: 720px) {
  .page-home .path-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-home .hero-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: stretch;
  }

  .page-home .hero-visual {
    aspect-ratio: 1 / 1.02;
    height: 100%;
  }

  .page-home .showcase {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    align-items: start;
  }

  .page-home .vendors {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }

  .page-home .trio {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: start;
  }

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

@media (min-width: 1040px) {
  .page-home .home-body {
    grid-template-columns: minmax(0, 1fr) var(--rail-w);
    align-items: start;
  }

  .page-home .chapters { order: 1; }
  .page-home .rail { order: 2; }

  .page-home .rail-inner {
    position: sticky;
    top: 96px;
  }

  .page-home .rail-title {
    display: block;
    margin-bottom: 10px;
  }

  .page-home .rail-list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--steel-600);
  }

  .page-home .rail-link {
    margin-left: -1px;
    border-left: 2px solid transparent;
    border-radius: 0 2px 2px 0;
  }

  .page-home .path-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-home .path-card:nth-child(1) { grid-column: span 7; }
  .page-home .path-card:nth-child(2) { grid-column: span 5; margin-top: 26px; }
  .page-home .path-card:nth-child(3) { grid-column: span 5; }
  .page-home .path-card:nth-child(4) { grid-column: span 7; margin-top: 26px; }

  .page-home .wall {
    grid-template-columns: repeat(auto-fill, minmax(78px, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-home .mock-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .mock-card:nth-child(3) {
    grid-column: span 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .hero-halo {
    animation: none;
    opacity: .8;
  }

  .page-home .path-card:hover {
    transform: none;
  }

  .page-home .path-card,
  .page-home .toggle-pill,
  .page-home .wall-cell,
  .page-home .rail-link {
    transition: none;
  }
}
<<<END>>>