.page-home {
  --home-rail-w: 180px;
  --home-dock-w: 300px;
  --home-gap: 52px;

  position: relative;
  background-color: var(--paper);
  background-image:
    linear-gradient(to right, rgba(18, 35, 63, .035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(18, 35, 63, .035) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--ink);
  font-family: var(--font-body);
  padding-bottom: 100px;
  overflow-x: clip;
}

/* ---------- 框景首屏 ---------- */

.page-home .home-hero {
  max-width: var(--maxw);
  margin: 28px auto 0;
  padding: 0 var(--gutter);
}

.page-home .hero-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  padding: 46px 26px 54px;
  isolation: isolate;
  background:
    radial-gradient(120% 150% at 90% 6%, rgba(36, 69, 110, .92) 0%, rgba(36, 69, 110, 0) 60%),
    linear-gradient(142deg, var(--navy-900) 0%, var(--navy-800) 60%, var(--navy-700) 100%);
  box-shadow: var(--shadow-2);
}

.page-home .hero-frame::before,
.page-home .hero-frame::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  height: 8px;
  z-index: 3;
  pointer-events: none;
  background: repeating-linear-gradient(to right, var(--gold) 0 1px, transparent 1px 28px);
  opacity: .5;
}

.page-home .hero-frame::before { top: 13px; }
.page-home .hero-frame::after { bottom: 13px; }

.page-home .hero-art {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: .2;
}

.page-home .hero-art img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-home .hero-body {
  position: relative;
  z-index: 2;
  max-width: 620px;
  color: var(--paper);
}

.page-home .hero-kicker {
  display: inline-block;
  margin: 0 0 20px;
  padding: 5px 13px;
  border: 1px solid var(--line-light);
  border-radius: 999px;
  background: rgba(244, 241, 234, .07);
  font-size: 12px;
  letter-spacing: .12em;
  color: rgba(244, 241, 234, .84);
}

.page-home .hero-title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(31px, 6vw, 54px);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: #fff;
}

.page-home .hero-lead {
  margin: 0 0 28px;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.86;
  color: rgba(244, 241, 234, .8);
}

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

.page-home .hero-hint {
  margin: 24px 0 0;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--gold);
}

@media (min-width: 720px) {
  .page-home .hero-frame { padding: 56px 48px 62px; }
  .page-home .hero-art {
    inset: 0 0 0 auto;
    width: 52%;
    opacity: .46;
    -webkit-mask-image: linear-gradient(100deg, transparent 0%, rgba(0, 0, 0, .4) 38%, #000 76%);
    mask-image: linear-gradient(100deg, transparent 0%, rgba(0, 0, 0, .4) 38%, #000 76%);
  }
}

/* ---------- 三分栏骨架 ---------- */

.page-home .home-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 38px;
  align-items: start;
  max-width: var(--maxw);
  margin: 62px auto 0;
  padding: 0 var(--gutter);
}

.page-home .home-main {
  display: grid;
  gap: 76px;
  min-width: 0;
}

/* 左栏章节刻度 */

.page-home .home-rail-label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--grey);
}

.page-home .home-rail-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-home .home-rail-list::-webkit-scrollbar { display: none; }

.page-home .home-rail-item {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line-dark);
  background: var(--paper-2);
  font-size: 13px;
  color: var(--ink-soft);
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-home .home-rail-item span {
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--gold-deep);
}

.page-home .home-rail-item:hover,
.page-home .home-rail-item:focus-visible {
  color: var(--navy-900);
  border-color: rgba(18, 35, 63, .3);
}

.page-home .home-rail-item.is-active {
  border-color: rgba(200, 50, 43, .42);
  background: rgba(200, 50, 43, .07);
  color: var(--navy-900);
  font-weight: 700;
}

/* 右侧更新栏 */

.page-home .home-dock {
  display: grid;
  gap: 14px;
  min-width: 0;
  padding: 24px 20px 20px;
  border-radius: var(--radius);
  border: 1px solid rgba(244, 241, 234, .12);
  background: linear-gradient(166deg, var(--navy-glass), rgba(27, 54, 93, .93));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-2);
  color: var(--paper);
}

.page-home .dock-kicker {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 11px;
  border: 1px solid var(--gold-line);
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-home .dock-title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: -.01em;
  color: #fff;
}

.page-home .dock-note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.72;
  color: rgba(244, 241, 234, .66);
}

.page-home .dock-list {
  display: grid;
  gap: 0;
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(244, 241, 234, .14);
}

.page-home .dock-item {
  padding: 13px 0;
  border-bottom: 1px solid rgba(244, 241, 234, .1);
}

.page-home .dock-time {
  display: inline-block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-home .dock-line {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.66;
  color: rgba(244, 241, 234, .92);
}

.page-home .dock-summary {
  margin: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 12.5px;
  line-height: 1.72;
  color: rgba(244, 241, 234, .58);
  transition: max-height .28s var(--ease), opacity .28s var(--ease), margin-top .28s var(--ease);
}

.page-home .dock-item:hover .dock-summary,
.page-home .dock-item:focus-within .dock-summary {
  max-height: 120px;
  opacity: 1;
  margin-top: 8px;
}

@media (hover: none) {
  .page-home .dock-summary {
    max-height: none;
    opacity: 1;
    margin-top: 8px;
  }
}

.page-home .dock-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--gold);
  text-decoration: none;
  transition: opacity .2s var(--ease);
}

.page-home .dock-link:hover,
.page-home .dock-link:focus-visible { opacity: .76; }

/* ---------- 章节通用 ---------- */

.page-home .home-section {
  min-width: 0;
  scroll-margin-top: 96px;
}

.page-home .sec-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  margin-bottom: 30px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-dark);
}

.page-home .sec-num {
  padding-top: 7px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold-deep);
}

.page-home .sec-title {
  margin: 0 0 8px;
  font-size: clamp(21px, 3.2vw, 29px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -.018em;
  color: var(--navy-900);
}

.page-home .sec-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--ink-soft);
}

/* ---------- 01 三条主线 ---------- */

.page-home .route-banner {
  position: relative;
  margin: 0 0 26px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--navy-900);
}

.page-home .route-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1400 / 420;
  object-fit: cover;
  opacity: .94;
}

.page-home .route-banner figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 9px 15px;
  border-top-right-radius: var(--radius-sm);
  background: rgba(18, 35, 63, .86);
  color: rgba(244, 241, 234, .88);
  font-size: 12.5px;
  line-height: 1.5;
}

.page-home .route-set {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-home .route-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  padding: 24px 24px 26px;
  border-radius: var(--radius);
  border: 1px solid var(--line-dark);
  background: var(--paper-2);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}

.page-home .route-card--wide {
  border-left: 3px solid var(--gold);
  background: linear-gradient(180deg, var(--paper-2), var(--paper));
}

.page-home .route-card--tall {
  border-color: rgba(244, 241, 234, .12);
  background: linear-gradient(158deg, var(--navy-900), var(--navy-700));
  color: var(--paper);
}

.page-home .route-card--index {
  border-color: rgba(183, 189, 199, .8);
  background: var(--index);
}

.page-home .route-card--index::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red), rgba(200, 50, 43, 0));
}

.page-home .route-card-num {
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--gold-deep);
}

.page-home .route-card-title {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.36;
  letter-spacing: -.012em;
  color: var(--navy-900);
}

.page-home .route-card-body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--ink-soft);
}

.page-home .route-card-stamp {
  margin: 0;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  background: rgba(244, 241, 234, .08);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-home .route-card--tall .route-card-num { color: var(--gold); }
.page-home .route-card--tall .route-card-title { color: #fff; }
.page-home .route-card--tall .route-card-body { color: rgba(244, 241, 234, .78); }

.page-home .route-mini {
  display: grid;
  gap: 1px;
  margin: 2px 0 0;
  padding: 0;
  list-style: none;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--line-dark-soft);
}

.page-home .route-mini li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 12px;
  background: var(--paper-2);
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-soft);
}

.page-home .route-mini li span {
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--gold-deep);
}

.page-home .route-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 12px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--red);
  text-decoration: none;
  transition: gap .2s var(--ease), color .2s var(--ease);
}

.page-home .route-link:hover,
.page-home .route-link:focus-visible {
  gap: 12px;
  color: var(--red-dark);
}

.page-home .route-card--tall .route-link { color: var(--gold); }
.page-home .route-card--tall .route-link:hover { color: #fff; }

@media (min-width: 760px) {
  .page-home .route-set { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .page-home .route-card--wide { grid-column: span 12; }
  .page-home .route-card--tall { grid-column: span 7; }
  .page-home .route-card--index { grid-column: span 5; margin-top: 26px; }
}

/* ---------- 02 日常记录时间轴 ---------- */

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

.page-home .record-art {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--navy-800);
}

.page-home .record-art img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 1200;
  object-fit: cover;
  opacity: .9;
}

.page-home .record-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 24px;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-home .record-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  border-left: 1px dashed rgba(18, 35, 63, .2);
}

.page-home .record-item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 14px;
  align-items: baseline;
  padding: 14px 16px 15px;
  border-radius: var(--radius-sm);
  transition: background-color .2s var(--ease);
}

.page-home .record-item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 21px;
  box-sizing: border-box;
  width: 11px;
  height: 11px;
  border: 2px solid var(--grey);
  border-radius: 50%;
  background: var(--paper);
}

.page-home .record-item.is-accent::before {
  border-color: var(--red);
  background: var(--red);
  box-shadow: 0 0 0 3px rgba(200, 50, 43, .14);
}

.page-home .record-item:hover { background: rgba(18, 35, 63, .045); }

.page-home .record-meta {
  grid-column: 1 / -1;
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-home .record-time {
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--gold-deep);
}

.page-home .record-num {
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--grey);
}

.page-home .record-title {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.62;
  color: var(--ink);
}

.page-home .record-tag {
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(18, 35, 63, .07);
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-soft);
  white-space: nowrap;
}

@media (min-width: 860px) {
  .page-home .record-grid {
    grid-template-columns: 224px minmax(0, 1fr);
    gap: 42px;
  }
  .page-home .record-art { align-self: start; }
}

/* ---------- 03 收藏与回看 ---------- */

.page-home .keep-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

.page-home .keep-lead {
  margin: 0 0 16px;
  padding-left: 15px;
  border-left: 3px solid var(--red);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.56;
  letter-spacing: -.01em;
  color: var(--navy-900);
}

.page-home .keep-body {
  margin: 0 0 22px;
  font-size: 14.5px;
  line-height: 1.86;
  color: var(--ink-soft);
}

.page-home .keep-points {
  display: grid;
  gap: 8px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}

.page-home .keep-points li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 15px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-dark-soft);
  background: var(--paper-2);
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-home .keep-points li span {
  padding-top: 4px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold-deep);
}

.page-home .keep-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-home .keep-art {
  margin: 0;
  border-radius: var(--radius);
  border: 1px solid var(--line-dark);
  overflow: hidden;
  background: var(--navy-900);
}

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

@media (min-width: 860px) {
  .page-home .keep-grid {
    grid-template-columns: minmax(0, 1fr) 262px;
    gap: 46px;
    align-items: start;
  }
}

/* ---------- 04 长期使用 ---------- */

.page-home .longrun-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

.page-home .longrun-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--line-dark);
}

.page-home .stat {
  display: grid;
  gap: 5px;
  padding: 18px 16px;
  background: var(--paper-2);
}

.page-home .stat-num {
  font-family: var(--font-mono);
  font-size: 25px;
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.1;
  color: var(--navy-900);
}

.page-home .stat-label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink-soft);
}

.page-home .longrun-copy p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-home .longrun-copy p:last-of-type { margin-bottom: 24px; }

.page-home .longrun-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 860px) {
  .page-home .longrun-grid {
    grid-template-columns: 272px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }
}

/* ---------- 桌面三分栏 ---------- */

@media (min-width: 768px) {
  .page-home .home-shell {
    grid-template-columns: minmax(0, 1fr) var(--home-dock-w);
    gap: 40px;
  }
  .page-home .home-rail {
    grid-column: 1 / -1;
  }
  .page-home .home-dock {
    position: sticky;
    top: 72px;
  }
}

@media (min-width: 1100px) {
  .page-home .home-shell {
    grid-template-columns: var(--home-rail-w) minmax(0, 1fr) var(--home-dock-w);
    gap: var(--home-gap);
  }
  .page-home .home-rail {
    grid-column: auto;
    position: sticky;
    top: 78px;
    align-self: start;
    padding-top: 6px;
  }
  .page-home .home-rail-list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-home .home-rail-item {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 9px 10px 9px 13px;
    background: transparent;
    white-space: normal;
    line-height: 1.5;
  }
  .page-home .home-rail-item:hover,
  .page-home .home-rail-item:focus-visible {
    background: rgba(18, 35, 63, .05);
    border-left-color: rgba(18, 35, 63, .22);
  }
  .page-home .home-rail-item.is-active {
    border-left-color: var(--red);
    background: rgba(200, 50, 43, .07);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .dock-summary,
  .page-home .route-link,
  .page-home .home-rail-item,
  .page-home .record-item {
    transition: none;
  }
}
</main>