.page-home {
  --page-pad: clamp(20px, 5vw, 64px);
  --page-max: 1200px;
  --line: 1px solid var(--hairline);
  position: relative;
  background: var(--ink);
  color: var(--mist);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-home .hero,
.page-home .chapter,
.page-home .outro {
  padding-inline: max(var(--page-pad), calc((100% - var(--page-max)) / 2));
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(36px, 7vw, 88px) clamp(40px, 6vw, 72px);
  border-bottom: var(--line);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(58, 43, 94, 0.62), transparent 62%),
    var(--ink);
}

.page-home .hero__figure {
  position: absolute;
  inset: 0;
  margin: 0;
  z-index: 0;
  pointer-events: none;
}

.page-home .hero__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
  -webkit-mask-image: linear-gradient(100deg, transparent 0%, rgba(0, 0, 0, 0.5) 38%, #000 100%);
  mask-image: linear-gradient(100deg, transparent 0%, rgba(0, 0, 0, 0.5) 38%, #000 100%);
}

.page-home .hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 45%;
  background: linear-gradient(180deg, transparent 0%, var(--ink) 92%);
  z-index: 0;
  pointer-events: none;
}

.page-home .hero__inner {
  position: relative;
  z-index: 1;
  max-width: 740px;
}

.page-home .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--lake-light);
}

.page-home .hero__title {
  margin: 16px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(38px, 10vw, 104px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-home .hero__title em {
  font-style: normal;
  color: var(--lake-light);
}

.page-home .hero__lead {
  margin: 20px 0 0;
  max-width: 40ch;
  font-size: clamp(15px, 2.1vw, 17px);
  line-height: 1.9;
  color: rgba(245, 242, 236, 0.8);
}

.page-home .hero__anchors {
  margin-top: clamp(28px, 5vw, 48px);
  display: grid;
  gap: 1px;
  background: var(--hairline);
  border: var(--line);
  max-width: 660px;
}

.page-home .anchor {
  background: rgba(12, 34, 48, 0.78);
  padding: 16px 18px 20px;
  display: grid;
  gap: 6px;
  align-content: start;
}

.page-home .anchor__num {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(52px, 13vw, 96px);
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: var(--lake-light);
}

.page-home .anchor--amber .anchor__num {
  color: var(--amber);
}

.page-home .anchor__label {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-home .anchor__note {
  font-size: 13px;
  line-height: 1.6;
  color: var(--rock);
  transition: color 320ms var(--ease-track);
}

.page-home .anchor:hover .anchor__note {
  color: var(--mist);
}

.page-home .hero__actions {
  margin-top: clamp(24px, 4vw, 36px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 章节通用 ---------- */
.page-home .chapter {
  position: relative;
  padding-block: clamp(40px, 7vw, 84px);
  border-bottom: var(--line);
}

.page-home .chapter--track {
  background: linear-gradient(180deg, var(--ink) 0%, #140f2a 55%, var(--ink) 100%);
}

.page-home .chapter__head {
  display: grid;
  gap: 12px;
  max-width: 760px;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-home .stage {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--rock);
}

.page-home .stage__num {
  font-weight: 500;
  color: var(--amber);
}

.page-home .stage__sep {
  color: var(--hairline-strong);
}

.page-home .chapter h2,
.page-home .outro h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(23px, 4.4vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-home .chapter__lead,
.page-home .outro__lead {
  margin: 0;
  max-width: 48ch;
  font-size: clamp(14px, 1.9vw, 16px);
  line-height: 1.9;
  color: rgba(245, 242, 236, 0.74);
}

/* ---------- 三件事 ---------- */
.page-home .tools {
  display: grid;
  gap: 1px;
  background: var(--hairline);
  border: var(--line);
}

.page-home .tool {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 22px 20px 24px;
  background: var(--ink-2);
  transition: background 320ms var(--ease-track), box-shadow 320ms var(--ease-track);
}

.page-home .tool:hover {
  background: var(--violet);
  box-shadow: inset 2px 0 0 var(--amber);
}

.page-home .tool__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-home .tool h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--mist);
}

.page-home .tool p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(245, 242, 236, 0.76);
}

.page-home .tool__link {
  margin-top: 4px;
  width: max-content;
  padding-bottom: 2px;
  font-size: 13px;
  color: var(--lake-light);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline-strong);
  transition: color 240ms var(--ease-track), border-color 240ms var(--ease-track);
}

.page-home .tool__link:hover,
.page-home .tool__link:focus-visible {
  color: var(--amber);
  border-color: var(--amber);
}

.page-home .tools__foot {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--rock);
}

.page-home .tools__foot a {
  color: var(--lake-light);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline-strong);
}

/* ---------- 三步自查 ---------- */
.page-home .steps-rail {
  list-style: none;
  margin: 0 0 clamp(24px, 4vw, 40px);
  padding: 0;
  display: grid;
  gap: 18px;
  position: relative;
}

.page-home .step {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  column-gap: 14px;
  align-items: start;
}

.page-home .step__node {
  grid-row: span 2;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--lake-light);
  border: 1px solid var(--lake);
  background: var(--ink);
}

.page-home .step--now .step__node {
  color: var(--amber);
  border-color: var(--amber);
  box-shadow: 0 0 0 4px rgba(242, 178, 60, 0.12);
}

.page-home .step__body {
  display: grid;
  gap: 4px;
  padding-top: 2px;
}

.page-home .step__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--mist);
}

.page-home .step__desc {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(245, 242, 236, 0.68);
}

.page-home .track-visuals {
  display: grid;
  gap: 16px;
}

.page-home .media-frame {
  margin: 0;
  border: var(--line);
  background: var(--ink-2);
  overflow: hidden;
}

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

.page-home .media-frame__caption {
  padding: 10px 14px 12px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--rock);
  border-top: var(--line);
}

/* ---------- 规则结构 ---------- */
.page-home .rules {
  display: grid;
  gap: 1px;
  background: var(--hairline);
  border: var(--line);
}

.page-home .rule {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) auto;
  gap: 4px 12px;
  align-items: baseline;
  padding: 14px 16px;
  background: var(--ink-2);
  transition: background 320ms var(--ease-track);
}

.page-home .rule:hover,
.page-home .rule:focus-visible {
  background: var(--violet);
}

.page-home .rule__no {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--lake-light);
}

.page-home .rule__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--mist);
}

.page-home .rule__count {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--rock);
  transition: color 320ms var(--ease-track);
}

.page-home .rule:hover .rule__count,
.page-home .rule:focus-visible .rule__count {
  color: var(--amber);
}

.page-home .rule__desc {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(245, 242, 236, 0.64);
}

.page-home .rules__foot {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--rock);
}

.page-home .rules__foot a {
  color: var(--lake-light);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline-strong);
}

/* ---------- 记录卡 ---------- */
.page-home .chapter--record {
  background: linear-gradient(180deg, var(--ink) 0%, #0a1a24 100%);
}

.page-home .record {
  display: grid;
  gap: 20px;
}

.page-home .record__figure {
  border-color: var(--hairline-strong);
}

.page-home .record__fields {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--hairline);
  border: var(--line);
}

.page-home .field {
  display: grid;
  gap: 3px;
  padding: 12px 16px;
  background: var(--ink-2);
}

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

.page-home .field dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(245, 242, 236, 0.78);
}

/* ---------- 收束 ---------- */
.page-home .outro {
  padding-block: clamp(48px, 8vw, 96px);
  background: linear-gradient(180deg, #0a1a24 0%, #150f2b 60%, var(--ink) 100%);
}

.page-home .outro__inner {
  max-width: 720px;
  display: grid;
  gap: 14px;
}

.page-home .outro__lead {
  max-width: 46ch;
}

.page-home .outro__links {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-home .hero__anchors {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-home .track-visuals {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: stretch;
  }
  .page-home .field {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }
}

@media (min-width: 780px) {
  .page-home .tools {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-home .steps-rail {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }
  .page-home .steps-rail::before {
    content: "";
    position: absolute;
    top: 21px;
    left: 24px;
    right: 24px;
    height: 1px;
    background: repeating-linear-gradient(
      90deg,
      var(--hairline-strong) 0 7px,
      transparent 7px 15px
    );
    z-index: 0;
  }
  .page-home .step {
    grid-template-columns: 1fr;
    row-gap: 10px;
    z-index: 1;
  }
  .page-home .step__node {
    grid-row: auto;
  }
  .page-home .step__body {
    padding-top: 0;
  }
}

@media (min-width: 880px) {
  .page-home .record {
    grid-template-columns: minmax(0, 400px) minmax(0, 1fr);
    align-items: start;
    gap: 32px;
  }
  .page-home .outro__inner {
    max-width: 760px;
  }
}

@media (max-width: 639px) {
  .page-home .anchor__num {
    letter-spacing: -0.03em;
  }
  .page-home .rule {
    padding: 13px 14px;
  }
  .page-home .tool {
    padding: 20px 16px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .tool,
  .page-home .rule,
  .page-home .anchor__note,
  .page-home .rule__count {
    transition: none;
  }
}