.page-home {
  --home-radius: 2px;
  --home-rule: #E4D3A3;
}

.page-home .section {
  padding: 64px 0;
}

@media (min-width: 768px) {
  .page-home .section {
    padding: 96px 0;
  }
}

/* ---------- 首屏 ---------- */

.page-home .home-hero {
  position: relative;
  overflow: hidden;
  background: var(--surface-deep);
  padding: 40px 0 64px;
}

@media (min-width: 768px) {
  .page-home .home-hero {
    padding: 56px 0 88px;
  }
}

.page-home .home-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(154deg, rgba(0, 0, 0, 0) 0 61.8%, var(--ink-gold) 61.8% 62.2%, rgba(0, 0, 0, 0) 62.2% 100%),
    linear-gradient(154deg, rgba(0, 0, 0, 0) 0 62.2%, var(--ink-red) 62.2% 100%);
}

@media (min-width: 860px) {
  .page-home .home-hero::before {
    background:
      linear-gradient(154deg, rgba(0, 0, 0, 0) 0 46.6%, var(--ink-gold) 46.6% 47%, rgba(0, 0, 0, 0) 47% 100%),
      linear-gradient(154deg, rgba(0, 0, 0, 0) 0 47% 100%, var(--ink-red) 47% 100%),
      linear-gradient(154deg, rgba(0, 0, 0, 0) 0 47%, var(--ink-red) 47% 100%);
  }
}

.page-home .hero-art {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  opacity: 0.16;
  pointer-events: none;
}

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

.page-home .home-hero .container {
  position: relative;
  z-index: 2;
}

.page-home .home-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 28px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(245, 239, 227, 0.62);
}

.page-home .home-crumb a {
  color: rgba(245, 239, 227, 0.62);
  text-decoration: none;
}

.page-home .home-crumb a:hover,
.page-home .home-crumb a:focus-visible {
  color: var(--ink-butter);
}

.page-home .home-crumb .crumb-sep {
  color: var(--ink-gold);
}

.page-home .hero-grid {
  display: grid;
  gap: 40px;
}

@media (min-width: 900px) {
  .page-home .hero-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
    gap: 52px;
  }
}

.page-home .hero-copy .eyebrow {
  color: var(--ink-butter);
}

.page-home .hero-copy .display {
  margin: 14px 0 20px;
  font-size: clamp(40px, 9.5vw, 88px);
  line-height: 1.04;
  font-weight: 300;
  letter-spacing: -0.02em;
  color: var(--on-deep);
}

.page-home .hero-copy .lead {
  max-width: 34em;
  color: rgba(245, 239, 227, 0.76);
}

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

.page-home .hero-sub {
  padding: 26px 22px 24px;
  background: var(--surface-paper);
  color: var(--surface-deep);
}

@media (min-width: 768px) {
  .page-home .hero-sub {
    padding: 30px 28px 28px;
  }
}

.page-home .hero-sub .eyebrow {
  color: var(--ink-clay);
}

.page-home .hero-sub-title {
  margin: 10px 0 12px;
  font-size: 22px;
  line-height: 1.35;
  font-weight: 500;
  color: var(--surface-deep);
}

.page-home .hero-sub-text {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-indigo-soft);
}

.page-home .hero-sub .btn {
  width: 100%;
}

.page-home .hero-sub .utility-note {
  margin: 16px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-stone);
}

/* ---------- 上手路径 ---------- */

.page-home .start-section {
  position: relative;
  overflow: hidden;
}

.page-home .start-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  opacity: 0.07;
  pointer-events: none;
}

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

.page-home .start-section .container {
  position: relative;
  z-index: 1;
}

.page-home .section-head {
  max-width: 40rem;
  margin: 0 0 36px;
}

.page-home .section-head .eyebrow {
  color: var(--ink-clay);
}

.page-home .section-head .h2 {
  margin: 10px 0 14px;
  color: var(--surface-deep);
}

.page-home .section-sub {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-indigo-soft);
}

.page-home .start-split {
  display: grid;
  gap: 40px;
}

@media (min-width: 960px) {
  .page-home .start-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
    align-items: start;
  }
}

.page-home .steps-col {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--ink-hair);
}

.page-home .step {
  border-bottom: 1px solid var(--ink-hair);
  padding: 16px 0;
}

.page-home .step summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 14px;
  cursor: pointer;
  list-style: none;
}

.page-home .step summary::-webkit-details-marker {
  display: none;
}

.page-home .step summary::after {
  content: "展开";
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-stone);
}

.page-home .step[open] summary::after {
  content: "收起";
  color: var(--ink-red);
}

.page-home .step summary:focus-visible {
  outline: 2px solid var(--ink-gold);
  outline-offset: 4px;
}

.page-home .step-num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--ink-red);
}

.page-home .step-title {
  font-size: 19px;
  font-weight: 500;
  color: var(--surface-deep);
}

.page-home .step-body {
  padding-left: 46px;
}

.page-home .step-body p {
  margin: 12px 0 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-indigo-soft);
}

.page-home .step-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-red);
  text-decoration: none;
  border-bottom: 1px solid var(--ink-hair);
  padding-bottom: 2px;
}

.page-home .step-link:hover,
.page-home .step-link:focus-visible {
  color: var(--ink-butter);
  border-bottom-color: var(--ink-gold);
}

.page-home .rules-panel {
  background: var(--surface-paper-2);
  padding: 24px 20px 26px;
}

@media (min-width: 768px) {
  .page-home .rules-panel {
    padding: 30px 28px 32px;
  }
}

.page-home .rules-panel-head .h3 {
  margin: 0 0 8px;
  color: var(--surface-deep);
}

.page-home .rules-panel-note {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-indigo-soft);
}

.page-home .rules-panel-note--tail {
  margin: 18px 0 0;
  color: var(--ink-stone);
}

.page-home .rule-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.page-home .rule-table th {
  padding: 8px 10px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  font-weight: 400;
  color: var(--ink-stone);
  border-bottom: 1px solid var(--ink-clay);
}

.page-home .rule-table td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--ink-hair);
  color: var(--surface-deep);
}

.page-home .rule-table .rule-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ink-clay);
}

.page-home .cat-label {
  margin: 22px 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-stone);
}

.page-home .cat-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-home .cat-chip {
  display: inline-block;
  padding: 5px 11px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-clay);
  border: 1px solid var(--ink-clay);
  border-radius: var(--home-radius);
  text-decoration: none;
  transition: background-color 160ms var(--ease-out), color 160ms var(--ease-out);
}

.page-home .cat-chip:hover,
.page-home .cat-chip:focus-visible {
  background: var(--ink-clay);
  color: var(--surface-paper);
}

.page-home .rules-fig {
  margin: 28px 0 0;
}

.page-home .fig-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-stone);
}

/* ---------- 版本线 ---------- */

.page-home .version-section {
  background: var(--surface-deep);
}

.page-home .version-grid {
  display: grid;
  gap: 36px;
}

@media (min-width: 900px) {
  .page-home .version-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 56px;
    align-items: center;
  }
}

.page-home .version-fig {
  margin: 0;
}

.page-home .version-copy .eyebrow {
  color: var(--ink-butter);
}

.page-home .version-copy .h2 {
  margin: 10px 0 16px;
  color: var(--on-deep);
}

.page-home .version-copy .lead {
  color: rgba(245, 239, 227, 0.72);
}

.page-home .version-tags {
  list-style: none;
  margin: 26px 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-home .version-tags li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(245, 239, 227, 0.72);
}

.page-home .version-tags li .badge {
  flex: 0 0 auto;
  margin-top: 3px;
}

.page-home .version-note {
  margin: 0;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-butter);
  border: 1px solid rgba(201, 162, 39, 0.42);
  border-radius: var(--home-radius);
}

/* ---------- 记录 ---------- */

.page-home .record-section {
  background: var(--surface-felt);
}

.page-home .section-head--deep {
  max-width: 44rem;
  margin: 0 0 40px;
}

.page-home .section-head--deep .eyebrow {
  color: var(--ink-butter);
}

.page-home .section-head--deep .h2 {
  color: var(--on-deep);
}

.page-home .section-head--deep .section-sub {
  color: rgba(245, 239, 227, 0.66);
}

.page-home .record-grid {
  display: grid;
  gap: 32px;
}

@media (min-width: 860px) {
  .page-home .record-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }
}

.page-home .record-demo {
  padding: 22px 20px 24px;
}

.page-home .demo-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-butter);
}

.page-home .demo-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 18px;
}

.page-home .demo-chip {
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: rgba(245, 239, 227, 0.66);
  border: 1px solid rgba(245, 239, 227, 0.22);
  border-radius: var(--home-radius);
}

.page-home .demo-chip.is-on {
  background: var(--ink-butter);
  border-color: var(--ink-butter);
  color: var(--surface-deep);
}

.page-home .demo-week {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 6px;
}

.page-home .demo-week span {
  display: grid;
  place-items: center;
  height: 42px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: rgba(245, 239, 227, 0.66);
  border: 1px solid rgba(245, 239, 227, 0.16);
  border-radius: var(--home-radius);
}

.page-home .demo-week span.is-on {
  background: var(--ink-red);
  border-color: var(--ink-red);
  color: var(--on-deep);
}

.page-home .demo-note {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(245, 239, 227, 0.6);
}

.page-home .record-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.page-home .record-steps li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.page-home .record-steps .num {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--ink-butter);
  line-height: 1.7;
}

.page-home .record-steps p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(245, 239, 227, 0.72);
}

.page-home .record-steps a {
  color: var(--ink-butter);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 200, 121, 0.5);
}

.page-home .record-steps a:hover,
.page-home .record-steps a:focus-visible {
  color: var(--on-deep);
}

/* ---------- 问答 ---------- */

.page-home .faq-section {
  background: var(--surface-paper-2);
}

.page-home .faq-grid {
  display: grid;
  gap: 32px;
}

@media (min-width: 900px) {
  .page-home .faq-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 56px;
    align-items: start;
  }
}

.page-home .faq-head .eyebrow {
  color: var(--ink-clay);
}

.page-home .faq-head .h2 {
  margin: 10px 0 14px;
  color: var(--surface-deep);
}

.page-home .faq-head-note {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-indigo-soft);
}

.page-home .faq-head-note a {
  color: var(--ink-red);
  text-decoration: none;
  border-bottom: 1px solid var(--ink-hair);
}

.page-home .faq-list {
  margin: 0;
  display: grid;
}

.page-home .faq-item {
  border-top: 1px solid var(--ink-hair);
  padding: 20px 0;
}

.page-home .faq-item dt {
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--surface-deep);
}

.page-home .faq-item dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-indigo-soft);
}

.page-home .faq-item dd a {
  color: var(--ink-red);
  text-decoration: none;
  border-bottom: 1px solid var(--ink-hair);
}

.page-home .faq-item dd a:hover,
.page-home .faq-item dd a:focus-visible {
  color: var(--ink-clay);
  border-bottom-color: var(--ink-clay);
}

.page-home .home-footnote {
  margin: 40px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--ink-hair);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  line-height: 1.8;
  color: var(--ink-stone);
}

/* ---------- 无障碍与降级 ---------- */

.page-home a:focus-visible,
.page-home summary:focus-visible {
  outline: 2px solid var(--ink-gold);
  outline-offset: 3px;
}

@media (max-width: 559px) {
  .page-home .rule-table .col-status {
    display: none;
  }
  .page-home .step-body {
    padding-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .cat-chip {
    transition: none;
  }
}
</main>