.page-home {
  --home-rail-w: 300px;
  --home-gap: clamp(20px, 3vw, 48px);
  padding-block: clamp(20px, 3vw, 40px) clamp(48px, 6vw, 96px);
}

/* 外壳与索引轨 */
.page-home .home-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 3vw, 44px);
  align-items: start;
}

.page-home .home-rail {
  min-width: 0;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-home .rail-label {
  color: var(--cyan);
  margin-bottom: 12px;
}

.page-home .rail-nav {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-home .rail-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  white-space: nowrap;
  font-size: 14px;
  color: var(--ash);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-home .rail-link:hover,
.page-home .rail-link:focus-visible {
  color: var(--paper);
  border-left-color: var(--cyan);
  background: rgba(53, 230, 218, 0.06);
}

.page-home .rail-no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-home .rail-note {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--ash);
  max-width: 34em;
}

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

/* 页面上下文 */
.page-home .home-context {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ash);
  margin-bottom: 18px;
}

.page-home .home-context__sep {
  color: var(--cyan);
}

/* 首屏拼贴 */
.page-home .collage {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-home .collage__main {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 420px;
  overflow: hidden;
  isolation: isolate;
  clip-path: var(--cut);
  background: var(--ink-800);
}

.page-home .collage__main::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: repeating-linear-gradient(135deg, rgba(53, 230, 218, 0.07) 0 1px, transparent 1px 9px);
}

.page-home .collage__main::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(105deg, rgba(7, 14, 26, 0.94) 0%, rgba(7, 14, 26, 0.72) 48%, rgba(7, 14, 26, 0.24) 100%);
}

.page-home .collage__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 70% 50%;
  opacity: 0.55;
}

.page-home .collage__anno {
  position: absolute;
  right: 14px;
  top: 22px;
  z-index: 2;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--ash);
}

.page-home .collage__inner {
  position: relative;
  z-index: 2;
  padding: clamp(22px, 3vw, 46px);
  max-width: 40em;
}

.page-home .hero-lead {
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.9;
  color: #C9D6E6;
  max-width: 34em;
}

.page-home .hero h1 {
  margin-top: 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 5.6vw, 60px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-home .collage__side {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.page-home .collage-card {
  position: relative;
  padding: 22px 22px 20px;
  clip-path: var(--cut);
  background: var(--ink-700);
  border: 1px solid var(--line-soft);
  transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}

.page-home .collage-card--amber {
  background: var(--amber-950);
}

.page-home .collage-card--amber .mono-label {
  color: var(--amber);
}

.page-home .collage-card__title {
  margin-top: 10px;
  font-family: var(--font-display);
  font-size: 21px;
  line-height: 1.32;
  color: var(--paper);
}

.page-home .collage-card__text {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ash);
}

.page-home .collage-card__link {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
  padding-bottom: 2px;
}

.page-home .collage-card__link:hover,
.page-home .collage-card__link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* 通用区块头 */
.page-home .band__head {
  max-width: 40em;
}

.page-home .band__head h2 {
  margin-top: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(25px, 3.4vw, 38px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-home .band__lead {
  margin-top: 14px;
  font-size: 16px;
  line-height: 1.9;
  color: #C9D6E6;
  max-width: 34em;
}

.page-home .band,
.page-home .lines,
.page-home .path,
.page-home .qa,
.page-home .contact {
  margin-top: clamp(52px, 7vw, 104px);
}

/* 最近记录摘要带 */
.page-home .records-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px);
  margin-top: 30px;
}

.page-home .records-list {
  min-width: 0;
}

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

.page-home .record-row {
  display: grid;
  gap: 4px;
  padding: 16px 2px 16px 16px;
  border-bottom: 1px solid var(--line-soft);
  border-left: 2px solid var(--cyan-line);
  transition: background 180ms var(--ease);
}

.page-home .record-row:hover {
  background: rgba(53, 230, 218, 0.05);
}

.page-home .record-row__time {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-home .record-row__title {
  font-size: 17px;
  color: var(--paper);
}

.page-home .record-row__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ash);
}

.page-home .record-fields {
  margin-top: 22px;
}

.page-home .field-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px 24px;
  margin: 0;
}

.page-home .field-list__item {
  display: grid;
  grid-template-columns: 6.5em minmax(0, 1fr);
  gap: 10px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--line-soft);
}

.page-home .field-list dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-home .field-list dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ash);
}

.page-home .records-media {
  align-self: start;
}

/* 三条服务线 */
.page-home .lines-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin-top: 30px;
  background: var(--ink-800);
  clip-path: var(--cut);
}

.page-home .line-col {
  padding: 26px 24px 28px;
  border-top: 1px solid var(--line-soft);
}

.page-home .line-col:first-child {
  border-top: 0;
}

.page-home .line-col__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-home .line-col h3 {
  margin-top: 10px;
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.3;
  color: var(--paper);
}

.page-home .line-col p {
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.9;
  color: #B9C7D8;
}

.page-home .line-col__link {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
  padding-bottom: 2px;
}

.page-home .line-col__link:hover,
.page-home .line-col__link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

.page-home .lines-media {
  margin-top: 20px;
}

/* 四步路径 */
.page-home .path-track {
  display: block;
  width: 100%;
  height: 48px;
  margin-top: 26px;
}

.page-home .path-steps {
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin: 8px 0 0;
  padding: 0;
  counter-reset: pathstep;
}

.page-home .path-step {
  padding: 18px 20px;
  background: var(--ink-700);
  border-left: 2px solid var(--mute);
}

.page-home .path-step__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mute);
}

.page-home .path-step h3 {
  margin-top: 8px;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.3;
  color: var(--paper);
}

.page-home .path-step p:last-child {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ash);
}

.page-home .path-cta {
  margin-top: 26px;
}

/* 问题条目 */
.page-home .qa-list {
  display: grid;
  gap: 12px;
  margin-top: 28px;
  max-width: 52em;
}

.page-home .qa-more {
  margin-top: 20px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ash);
}

.page-home .qa-more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
}

.page-home .qa-more a:hover,
.page-home .qa-more a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* 合作与联系 */
.page-home .contact {
  padding: clamp(24px, 3.4vw, 46px);
  background: var(--ink-800);
  clip-path: var(--cut);
  border-top: 1px solid var(--cyan-line);
}

.page-home .contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  margin-top: 28px;
}

.page-home .contact-item {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-home .contact-copy {
  display: inline-block;
  margin-top: 10px;
  padding: 0;
  background: none;
  border: 0;
  border-bottom: 1px dashed var(--cyan-line);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--paper);
  cursor: pointer;
  word-break: break-all;
  text-align: left;
}

.page-home .contact-copy:hover,
.page-home .contact-copy:focus-visible {
  color: var(--cyan);
}

.page-home .contact-phone {
  display: inline-block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 20px;
  letter-spacing: 0.04em;
  color: var(--amber);
  text-decoration: none;
}

.page-home .contact-phone:hover,
.page-home .contact-phone:focus-visible {
  color: var(--paper);
}

.page-home .contact-address {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper);
}

.page-home .contact-note {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--ash);
}

.page-home .contact-cta {
  margin-top: 30px;
}

/* 平板及更宽 */
@media (min-width: 720px) {
  .page-home .collage {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-home .collage__main {
    grid-column: span 7;
    min-height: 456px;
  }

  .page-home .collage__side {
    grid-column: span 5;
    margin-top: 34px;
  }

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

  .page-home .lines-band {
    grid-template-columns: 1.15fr 1fr 0.95fr;
  }

  .page-home .line-col {
    border-top: 0;
    border-left: 1px solid var(--cyan-line);
  }

  .page-home .line-col:first-child {
    border-left: 0;
  }

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

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

/* 桌面：左轨常驻 */
@media (min-width: 1024px) {
  .page-home .home-shell {
    grid-template-columns: var(--home-rail-w) minmax(0, 1fr);
    gap: var(--home-gap);
  }

  .page-home .home-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    border-bottom: 0;
    padding-bottom: 0;
  }

  .page-home .rail-nav {
    flex-direction: column;
    overflow: visible;
    gap: 2px;
    padding-bottom: 0;
    border-left: 1px solid var(--line);
  }

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

  .page-home .rail-media {
    display: block;
    margin-top: 24px;
  }

  .page-home .records-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
  }

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

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

  .page-home .collage__main {
    min-height: 500px;
  }
}

@media (min-width: 1024px) and (hover: hover) {
  .page-home .collage-card:hover {
    transform: translateY(-1px);
    border-color: var(--cyan-line);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .collage-card,
  .page-home .rail-link,
  .page-home .record-row {
    transition: none;
  }

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