.page-home {
  background: var(--ink);
  color: var(--haze);
}

.page-home a:focus-visible,
.page-home button:focus-visible {
  outline: 2px solid var(--celadon);
  outline-offset: 2px;
}

/* ---------- 路径总览 ---------- */
.page-home .path-overview {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1.2rem, 3vw, 2.2rem) clamp(3rem, 6vw, 5.5rem);
  background: var(--ink);
}

.page-home .path-overview-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-home .path-overview-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
}

.page-home .path-overview-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(11, 29, 48, 0.55) 0%, rgba(11, 29, 48, 0.92) 55%, var(--ink) 100%),
    radial-gradient(circle at 50% 30%, rgba(184, 137, 74, 0.16), transparent 60%);
}

.page-home .path-overview > .wrap {
  position: relative;
  z-index: 1;
}

.page-home .path-head {
  margin-block: clamp(1.2rem, 3vw, 2.4rem) 2rem;
  max-width: 900px;
}

.page-home .path-head .eyebrow {
  color: var(--copper-light);
  letter-spacing: 0.18em;
}

.page-home .path-head .page-title {
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: 0.02em;
  line-height: 1.18;
}

.page-home .path-head .lede {
  color: rgba(255, 255, 255, 0.82);
  max-width: 62ch;
  margin-top: 1.2rem;
}

/* 五节点路径图 */
.page-home .path-map {
  border-top: 1px solid var(--rule-copper);
  border-bottom: 1px solid var(--rule-copper);
  padding-block: clamp(1.2rem, 2.4vw, 2rem);
  margin-bottom: 2rem;
}

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

/* 数据条 */
.page-home .metric-strip {
  list-style: none;
  padding: 0;
  margin: 0 0 clamp(2rem, 4vw, 3.2rem);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--rule-soft);
  border-top: 1px solid var(--rule-copper);
  border-bottom: 1px solid var(--rule-copper);
}

.page-home .metric-strip li {
  background: rgba(18, 50, 74, 0.55);
  padding: 1.1rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.page-home .metric-strip strong {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 2.2vw, 1.7rem);
  color: var(--copper-light);
  letter-spacing: -0.01em;
}

.page-home .metric-strip span {
  font-size: 0.82rem;
  color: var(--haze);
  letter-spacing: 0.06em;
}

/* 双栏目录 */
.page-home .path-directory {
  display: grid;
  gap: 2.2rem;
}

.page-home .index-label {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.22em;
  color: var(--copper);
  margin: 0 0 0.9rem;
  text-transform: uppercase;
}

.page-home .index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule-copper);
}

.page-home .index-row {
  border-bottom: 1px solid var(--rule-soft);
}

.page-home .index-link {
  display: grid;
  grid-template-columns: 3rem 1fr;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.85rem 0.75rem;
  color: var(--haze);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.page-home .index-num {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  color: var(--copper);
  transition: color 0.18s ease;
}

.page-home .index-title {
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.page-home .index-link:hover,
.page-home .index-link:focus-visible {
  color: var(--white);
  background: rgba(184, 137, 74, 0.1);
  border-left-color: var(--copper);
}

.page-home .index-link:hover .index-num,
.page-home .index-link:focus-visible .index-num {
  color: var(--copper-light);
}

.page-home .index-row.is-current .index-link {
  color: var(--white);
  border-left-color: var(--cinnabar);
}

.page-home .index-row.is-current .index-num {
  color: var(--copper-light);
}

/* 路径摘要卡 */
.page-home .path-summary {
  display: grid;
  gap: 0.9rem;
}

.page-home .path-node {
  background: var(--ink-2);
  border-left: 2px solid var(--copper);
  padding: 1.4rem 1.35rem 1.3rem;
  scroll-margin-top: 6.5rem;
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.page-home .path-node:hover {
  background: #153b56;
  border-left-color: var(--copper-light);
}

.page-home .node-head {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  margin-bottom: 0.55rem;
}

.page-home .node-num {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  letter-spacing: 0.16em;
  color: var(--copper-light);
}

.page-home .node-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--white);
}

.page-home .path-node p {
  margin: 0 0 0.7rem;
  font-size: 0.95rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
}

.page-home .path-node .btn--link {
  color: var(--copper-light);
  text-decoration: none;
  border-bottom: 1px solid var(--rule-copper);
  padding-bottom: 1px;
  font-size: 0.9rem;
}

.page-home .path-node .btn--link:hover,
.page-home .path-node .btn--link:focus-visible {
  color: var(--white);
  border-bottom-color: var(--copper-light);
}

/* ---------- 桌面端入口 ---------- */
.page-home .entry-section {
  background: var(--paper);
  color: var(--graphite);
}

.page-home .entry-cols {
  display: grid;
  gap: 2rem;
}

.page-home .entry-section .section-index,
.page-home .library-section .section-index {
  color: var(--copper);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.page-home .entry-section .section-title,
.page-home .library-section .section-title {
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 800;
}

.page-home .entry-section .section-lead,
.page-home .library-section .section-lead {
  color: #3a4551;
}

.page-home .spec-list {
  margin: 1.6rem 0 1.8rem;
  border-top: 1px solid rgba(16, 24, 32, 0.18);
}

.page-home .spec-row {
  display: grid;
  gap: 0.2rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(16, 24, 32, 0.12);
}

.page-home .spec-row dt {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--cinnabar);
}

.page-home .spec-row dd {
  margin: 0;
  font-size: 0.95rem;
  color: var(--graphite);
  line-height: 1.65;
}

.page-home .entry-section .btn--ghost {
  color: var(--ink);
  border-color: rgba(11, 29, 48, 0.4);
}

.page-home .entry-section .btn--ghost:hover,
.page-home .entry-section .btn--ghost:focus-visible {
  background: rgba(11, 29, 48, 0.06);
  border-color: var(--ink);
}

.page-home .entry-media,
.page-home .library-media {
  margin: 0;
}

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

.page-home .entry-section .media-caption,
.page-home .library-section .media-caption {
  color: #4a5560;
  font-size: 0.82rem;
  margin-top: 0.6rem;
}

/* ---------- 重登四步 ---------- */
.page-home .reauth-section {
  background: var(--ink);
}

.page-home .reauth-section .section-index,
.page-home .update-section .section-index {
  color: var(--copper);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.page-home .reauth-section .section-title,
.page-home .update-section .section-title {
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 900;
}

.page-home .reauth-section .section-lead {
  color: var(--haze);
}

.page-home .steps-list {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--rule);
  border-top: 1px solid var(--rule-copper);
  border-bottom: 1px solid var(--rule-copper);
}

.page-home .step {
  background: var(--ink-2);
  padding: 1.5rem 1.3rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.page-home .step-num {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  letter-spacing: 0.12em;
  color: var(--copper-light);
  border-bottom: 1px solid var(--rule-copper);
  padding-bottom: 0.55rem;
  align-self: flex-start;
  min-width: 3.4rem;
}

.page-home .step-title {
  margin: 0.15rem 0 0;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: 0.02em;
}

.page-home .step p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.76);
}

.page-home .reauth-section .btn--ghost {
  color: var(--haze);
  border-color: var(--rule-copper);
}

.page-home .reauth-section .btn--ghost:hover,
.page-home .reauth-section .btn--ghost:focus-visible {
  color: var(--white);
  border-color: var(--copper-light);
}

/* ---------- 简体资料栏 ---------- */
.page-home .library-section {
  background: var(--paper);
  color: var(--graphite);
}

.page-home .library-grid {
  display: grid;
  gap: 2rem;
}

.page-home .category-list {
  list-style: none;
  margin: 1.4rem 0 1.2rem;
  padding: 0;
  border-top: 1px solid rgba(16, 24, 32, 0.18);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}

.page-home .category-list li {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.65rem 0.4rem 0.65rem 0;
  border-bottom: 1px solid rgba(16, 24, 32, 0.12);
  font-size: 0.94rem;
  color: var(--graphite);
}

.page-home .cat-num {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--cinnabar);
  letter-spacing: 0.1em;
}

.page-home .library-note {
  font-size: 0.92rem;
  line-height: 1.72;
  color: #3a4551;
  margin: 0 0 1.4rem;
  padding-left: 0.9rem;
  border-left: 2px solid var(--celadon);
}

.page-home .library-section .btn--on-paper {
  color: var(--paper);
  background: var(--ink);
  border-color: var(--ink);
}

.page-home .library-section .btn--on-paper:hover,
.page-home .library-section .btn--on-paper:focus-visible {
  background: var(--ink-2);
  border-color: var(--ink-2);
}

/* ---------- 第 12 期 ---------- */
.page-home .update-section {
  background: var(--ink-2);
}

.page-home .update-grid {
  display: grid;
  gap: 2rem;
}

.page-home .update-section .section-lead {
  color: var(--haze);
}

.page-home .tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.2rem 0 1.4rem;
}

.page-home .update-points {
  list-style: none;
  margin: 0 0 1.6rem;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.page-home .update-points li {
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 0.8rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--rule-soft);
  font-size: 0.92rem;
  line-height: 1.65;
}

.page-home .update-points strong {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--copper-light);
  font-weight: 600;
}

.page-home .update-points span {
  color: rgba(255, 255, 255, 0.82);
}

.page-home .update-media {
  margin: 0;
}

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

.page-home .update-section .media-caption {
  color: var(--haze);
  font-size: 0.82rem;
  margin-top: 0.6rem;
}

/* ---------- 联系 ---------- */
.page-home .contact-section {
  background: var(--paper);
  color: var(--graphite);
}

.page-home .contact-section .section-index {
  color: var(--copper);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.page-home .contact-section .section-title {
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 800;
}

.page-home .contact-section .section-lead {
  color: #3a4551;
}

.page-home .contact-cols {
  display: grid;
  gap: 1.6rem;
  margin-top: 1.6rem;
}

.page-home .contact-card {
  background: var(--white);
  border: 1px solid rgba(16, 24, 32, 0.14);
  padding: 1.4rem 1.3rem;
}

.page-home .contact-card .contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .contact-card .contact-row {
  display: grid;
  grid-template-columns: 6.4rem 1fr auto;
  align-items: center;
  gap: 0.7rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid rgba(16, 24, 32, 0.1);
  font-size: 0.9rem;
}

.page-home .contact-card .contact-row:last-child {
  border-bottom: none;
}

.page-home .contact-card .contact-label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--cinnabar);
}

.page-home .contact-card .contact-value {
  color: var(--graphite);
  word-break: break-all;
}

.page-home .contact-card .copy-btn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  padding: 0.32rem 0.6rem;
  background: transparent;
  color: var(--ink);
  border: 1px solid rgba(11, 29, 48, 0.32);
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.page-home .contact-card .copy-btn:hover,
.page-home .contact-card .copy-btn:focus-visible {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.page-home .copy-status {
  margin: 0.7rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--celadon);
  letter-spacing: 0.06em;
  min-height: 1.2em;
}

.page-home .contact-side {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
}

.page-home .contact-section .contact-note {
  font-size: 0.92rem;
  line-height: 1.72;
  color: #3a4551;
  margin: 0;
}

.page-home .contact-section .btn--on-paper {
  color: var(--paper);
  background: var(--ink);
  border-color: var(--ink);
}

.page-home .contact-section .btn--on-paper:hover,
.page-home .contact-section .btn--on-paper:focus-visible {
  background: var(--ink-2);
  border-color: var(--ink-2);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 640px) {
  .page-home .metric-strip {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-home .category-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 880px) {
  .page-home .path-directory {
    grid-template-columns: 15rem 1fr;
    gap: 3rem;
    align-items: start;
  }

  .page-home .path-index {
    position: sticky;
    top: 6.5rem;
  }

  .page-home .path-summary {
    gap: 1rem;
  }

  .page-home .entry-cols {
    grid-template-columns: 1.15fr 1fr;
    gap: 3.2rem;
    align-items: start;
  }

  .page-home .library-grid {
    grid-template-columns: 1fr 1.1fr;
    gap: 3.2rem;
    align-items: start;
  }

  .page-home .update-grid {
    grid-template-columns: 1.2fr 0.85fr;
    gap: 3rem;
    align-items: start;
  }

  .page-home .contact-cols {
    grid-template-columns: 1.05fr 1fr;
    gap: 2.4rem;
  }

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

@media (min-width: 1080px) {
  .page-home .steps-list {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .index-link,
  .page-home .path-node,
  .page-home .copy-btn {
    transition: none;
  }
}