.page-home {
  --home-band-1: #00E0D0;
  --home-band-2: #5FD9E8;
  --home-band-3: #2F9E77;
  --home-band-4: #7A5CFF;
  --home-band-5: #9C86FF;
  --home-band-6: #4FB8D8;
  --home-band-7: #F2B24C;
  --home-band-8: #E8C77A;
  --home-band-9: #B79CFF;
  display: block;
  padding-bottom: 40px;
}

.page-home .breadcrumb {
  margin: 20px 0 4px;
}

.page-home a.chapter-num {
  display: inline-block;
  text-decoration: none;
  color: inherit;
  transition: color .18s var(--ease);
}

.page-home a.chapter-num:hover,
.page-home a.chapter-num:focus-visible {
  color: var(--cyan);
}

/* ---------- 封面 ---------- */

.page-home .home-cover {
  border-bottom: 1px solid var(--grid-line);
  padding-bottom: 32px;
}

.page-home .cover-grid {
  display: grid;
  gap: 24px;
}

.page-home .cover-title {
  font-family: var(--sans);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.1;
  font-size: clamp(30px, 7.4vw, 66px);
  color: var(--paper);
  margin: 12px 0 20px;
}

.page-home .cover-title::after {
  content: "";
  display: block;
  width: 76px;
  height: 3px;
  margin-top: 22px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
}

.page-home .cover-left > .lede {
  max-width: 64ch;
  margin: 0;
}

.page-home .cover-left > .lede + .lede {
  margin-top: .9em;
}

.page-home .cover-index {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  border-top: 1px solid var(--grid-line);
}

.page-home .cover-index li {
  border-bottom: 1px solid var(--grid-line);
}

.page-home .cover-index a {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  grid-template-areas: "k t" "k d";
  gap: 2px 14px;
  padding: 14px 4px;
  color: var(--paper);
  text-decoration: none;
  transition: color .18s var(--ease), padding-left .18s var(--ease);
}

.page-home .cover-index a:hover,
.page-home .cover-index a:focus-visible {
  color: var(--cyan);
  padding-left: 12px;
}

.page-home .ci-k {
  grid-area: k;
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.5;
  color: var(--amber);
}

.page-home .ci-t {
  grid-area: t;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -.01em;
}

.page-home .ci-d {
  grid-area: d;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-home .cover-right {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-home .cover-figure {
  margin: 0;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--grid-line);
  box-shadow: var(--shadow-press);
}

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

.page-home .wave-box {
  background: var(--ink-2);
  border: 1px solid var(--grid-line);
  padding: 14px 14px 10px;
}

.page-home .wave-svg {
  width: 100%;
  height: auto;
  display: block;
}

.page-home .wave-line {
  animation: home-wave 4s ease-in-out infinite;
}

@keyframes home-wave {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.page-home .wave-cap {
  margin: 8px 0 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--muted);
}

/* ---------- 浮动面板 ---------- */

.page-home .home-panel {
  margin: 0;
}

.page-home .panel-toggle {
  background: none;
  border: 1px solid var(--grid-line);
  color: var(--cyan);
  font: inherit;
  font-size: 12px;
  letter-spacing: .08em;
  padding: 4px 10px;
  cursor: pointer;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-home .panel-toggle:hover {
  border-color: var(--cyan);
}

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

.page-home .panel-list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-home .panel-list > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--grid-line);
}

.page-home .panel-list dt {
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
}

.page-home .panel-list dd {
  margin: 0;
  font-family: var(--serif);
  font-size: 16px;
  color: var(--amber);
}

/* ---------- 数值锚点 ---------- */

.page-home .home-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px solid var(--grid-line);
}

/* ---------- 通用小节 ---------- */

.page-home .section-lede {
  max-width: 70ch;
  margin: 0 0 26px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 三个动作 ---------- */

.page-home .action-grid {
  gap: 24px;
}

.page-home .action-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-home .action-title {
  margin: 0;
  font-family: var(--sans);
  font-size: 22px;
  letter-spacing: -.01em;
}

.page-home .action-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper);
}

.page-home .action-src {
  margin: 0;
  padding-left: 9px;
  border-left: 2px solid var(--violet);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

.page-home .action-card .btn {
  margin-top: auto;
  align-self: flex-start;
}

.page-home .action-visual {
  margin: 32px 0 0;
}

/* ---------- 九类矩阵 ---------- */

.page-home .matrix-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  align-items: end;
}

.page-home .matrix-visual {
  margin: 0;
  width: 132px;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--grid-line);
  box-shadow: var(--shadow-press);
}

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

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

.page-home .cat-cell {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--ink-2);
  border: 1px solid var(--grid-line);
  padding: 20px 16px 16px;
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.page-home .cat-cell:hover {
  border-color: var(--band, var(--cyan));
  transform: translateY(-2px);
}

.page-home .cat-cell::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--band, var(--cyan));
}

.page-home .cat-cell::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 13px;
  height: 13px;
  background: linear-gradient(225deg, var(--ink) 50%, transparent 50%);
}

.page-home .cat-1 { --band: var(--home-band-1); }
.page-home .cat-2 { --band: var(--home-band-2); }
.page-home .cat-3 { --band: var(--home-band-3); }
.page-home .cat-4 { --band: var(--home-band-4); }
.page-home .cat-5 { --band: var(--home-band-5); }
.page-home .cat-6 { --band: var(--home-band-6); }
.page-home .cat-7 { --band: var(--home-band-7); }
.page-home .cat-8 { --band: var(--home-band-8); }
.page-home .cat-9 { --band: var(--home-band-9); }

.page-home .cat-num {
  font-family: var(--serif);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--amber);
}

.page-home .cat-cell h3 {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  letter-spacing: -.01em;
}

.page-home .cat-cell p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

.page-home .cat-cell a {
  margin-top: auto;
  align-self: flex-start;
  font-size: 13px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s var(--ease);
}

.page-home .cat-cell a:hover,
.page-home .cat-cell a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 时间轴 ---------- */

.page-home .tl-time {
  font-family: var(--serif);
  color: var(--amber);
}

.page-home .timeline-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--grid-line);
}

.page-home .timeline-note {
  margin: 0;
  max-width: 52ch;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 返水阶梯 ---------- */

.page-home .rebate-visual {
  margin: 0 0 22px;
}

.page-home .rebate-ladder {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 6px;
}

.page-home .rebate-ladder li {
  background: var(--ink-2);
  border: 1px solid var(--grid-line);
  padding: 9px 2px;
  text-align: center;
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--amber);
}

.page-home .rebate-note {
  max-width: 70ch;
  margin: 22px 0 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper);
}

/* ---------- 站点署名 ---------- */

.page-home .signoff {
  background: var(--ink-2);
  border: 1px solid var(--grid-line);
  box-shadow: var(--shadow-press);
  padding: 26px 20px;
}

.page-home .signoff-title {
  margin: 0 0 14px;
  font-family: var(--sans);
  font-size: clamp(20px, 4.4vw, 28px);
  letter-spacing: -.01em;
}

.page-home .signoff-body {
  max-width: 72ch;
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper);
}

.page-home .signoff-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

/* ---------- 断点 ---------- */

@media (min-width: 640px) {
  .page-home .matrix-visual { width: 168px; }
  .page-home .cat-matrix { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-home .rebate-ladder { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .page-home .signoff { padding: 30px 26px; }
}

@media (min-width: 960px) {
  .page-home .cover-grid {
    grid-template-columns: minmax(0, 7fr) minmax(300px, 4fr);
    gap: 32px;
  }
  .page-home .home-panel { position: sticky; top: 20px; }
  .page-home .home-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
  .page-home .matrix-head { grid-template-columns: minmax(0, 1fr) auto; gap: 28px; }
  .page-home .cat-matrix { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .wave-line { animation: none; }
  .page-home .cover-index a,
  .page-home .cat-cell { transition: none; }
}