.page-home {
  --home-gold: #C9A227;
  --home-cinnabar: #9E2B25;
  --home-deep: #0A1E3F;
  --home-shadow: #1D3557;
  --home-paper: #F5F0E6;
  --home-jade: #E8F0E8;
}

/* ===== 分屏首屏 ===== */
.page-home .split-hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + 36px) 0 64px;
  background:
    radial-gradient(ellipse at 78% 18%, rgba(29, 53, 87, 0.88) 0%, transparent 48%),
    linear-gradient(148deg, var(--color-primary) 0%, var(--color-shadow-blue) 55%, var(--color-primary) 100%);
  color: var(--color-paper);
  overflow: hidden;
}

.page-home .split-hero::before {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  border: 1px solid rgba(201, 162, 39, 0.2);
  border-radius: 50%;
  right: -60px;
  bottom: -60px;
  pointer-events: none;
}

.page-home .split-hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold) 0%, transparent 72%);
  pointer-events: none;
}

.page-home .split-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
  width: 100%;
}

.page-home .split-hero__copy {
  position: relative;
  z-index: 2;
}

.page-home .split-hero__copy .breadcrumb {
  margin-bottom: 28px;
  opacity: 0.75;
}

.page-home .split-hero .display-title {
  margin: 18px 0 22px;
  font-size: clamp(2.6rem, 7vw, 4.8rem);
  line-height: 1.14;
  letter-spacing: 0.04em;
}

.page-home .split-hero__lead {
  font-size: 1.02rem;
  line-height: 1.85;
  color: rgba(245, 240, 230, 0.86);
  max-width: 56ch;
  margin: 0;
}

.page-home .split-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.page-home .split-hero__visual {
  position: relative;
  max-width: 340px;
  width: 100%;
  margin: 0 auto;
}

.page-home .split-hero__frame {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: 4px;
  box-shadow: 0 24px 56px rgba(0, 0, 0, 0.32);
}

.page-home .split-hero__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.82) contrast(1.06);
}

.page-home .split-hero__lines {
  position: absolute;
  top: -18px;
  right: -30px;
  width: 170px;
  height: 220px;
  pointer-events: none;
  z-index: 3;
}

.page-home .split-hero__badge {
  position: absolute;
  left: -14px;
  bottom: 26px;
  background: var(--color-gold);
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  padding: 6px 12px;
  border-radius: 2px;
  box-shadow: 0 8px 24px rgba(201, 162, 39, 0.32);
  z-index: 3;
}

/* ===== 服务索引 ===== */
.page-home .service-index {
  position: relative;
  background: linear-gradient(180deg, var(--color-paper) 0%, var(--color-jade) 100%);
  padding: var(--section-pad) 0;
  overflow: hidden;
}

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

.page-home .service-index__texture img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.07;
  filter: sepia(0.35) saturate(1.4);
}

.page-home .service-index__head {
  max-width: 640px;
  margin-bottom: 48px;
  position: relative;
  z-index: 2;
}

.page-home .service-index__desc {
  color: var(--color-gray);
  margin-top: 16px;
  line-height: 1.75;
  font-size: 0.98rem;
}

.page-home .service-index__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  position: relative;
  z-index: 2;
}

.page-home .service-card {
  background: rgba(245, 240, 230, 0.92);
  border: 1px solid rgba(201, 162, 39, 0.3);
  border-radius: var(--radius);
  padding: 26px 24px;
  box-shadow: 0 2px 10px rgba(10, 30, 63, 0.04);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: box-shadow 0.35s var(--ease-out), transform 0.35s var(--ease-out), border-color 0.35s;
}

.page-home .service-card:hover {
  box-shadow: 0 14px 32px rgba(10, 30, 63, 0.1);
  transform: translateY(-3px);
  border-color: rgba(201, 162, 39, 0.55);
}

.page-home .service-card[data-open] {
  border-color: rgba(201, 162, 39, 0.68);
  box-shadow: 0 16px 36px rgba(10, 30, 63, 0.1);
}

.page-home .service-card--wide {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.page-home .service-card--wide:hover,
.page-home .service-card--wide[data-open] {
  border-color: rgba(201, 162, 39, 0.72);
}

.page-home .service-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.page-home .service-card__heading {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-home .service-card__index {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-gold);
  letter-spacing: 0.1em;
}

.page-home .service-card__title {
  font-family: var(--font-display);
  font-size: 1.32rem;
  font-weight: 700;
  line-height: 1.4;
  margin: 0;
  color: var(--color-ink);
}

.page-home .service-card--wide .service-card__title,
.page-home .service-card--wide .service-card__summary {
  color: var(--color-paper);
}

.page-home .service-card__summary {
  color: var(--color-gray);
  line-height: 1.7;
  font-size: 0.95rem;
  margin: 0;
}

.page-home .service-card--wide .service-card__summary {
  color: rgba(245, 240, 230, 0.78);
}

.page-home .service-card__toggle {
  background: transparent;
  border: 1px solid rgba(201, 162, 39, 0.42);
  border-radius: 50%;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  cursor: pointer;
  color: var(--color-gold);
  font-size: 1rem;
  line-height: 1;
  padding: 0;
  flex-shrink: 0;
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.page-home .service-card__toggle:hover {
  background: var(--color-gold);
  color: var(--color-primary);
  border-color: var(--color-gold);
}

.page-home .service-card--wide .service-card__toggle {
  border-color: rgba(201, 162, 39, 0.6);
}

.page-home .service-card--wide .service-card__toggle:hover {
  background: var(--color-gold-bright);
  border-color: var(--color-gold-bright);
  color: var(--color-primary);
}

.page-home .service-card__detail {
  padding: 2px 0 2px 16px;
  border-left: 1px solid rgba(201, 162, 39, 0.4);
  color: var(--color-gray);
  line-height: 1.8;
  font-size: 0.95rem;
}

.page-home .service-card__detail p {
  margin: 0 0 14px;
}

.page-home .service-card--wide .service-card__detail {
  color: rgba(245, 240, 230, 0.78);
}

/* ===== 最新动态与版本说明 ===== */
.page-home .latest-news {
  background: var(--color-paper);
  padding: var(--section-pad) 0;
}

.page-home .latest-news__head {
  margin-bottom: 44px;
  max-width: 640px;
}

.page-home .latest-news__desc {
  color: var(--color-gray);
  line-height: 1.75;
  margin-top: 16px;
}

.page-home .latest-news__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.page-home .news-card {
  background: var(--color-jade);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(10, 30, 63, 0.05);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.35s var(--ease-out), transform 0.35s var(--ease-out);
}

.page-home .news-card:hover {
  box-shadow: 0 16px 36px rgba(10, 30, 63, 0.12);
  transform: translateY(-3px);
}

.page-home .news-card__thumb {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 0;
  margin: 0;
}

.page-home .news-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s var(--ease-out);
}

.page-home .news-card:hover .news-card__thumb img {
  transform: scale(1.03);
}

.page-home .news-card__body {
  padding: 24px 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  align-items: flex-start;
}

.page-home .news-card__title {
  font-family: var(--font-display);
  font-size: 1.16rem;
  line-height: 1.5;
  color: var(--color-ink);
  margin: 0;
}

.page-home .news-card__text {
  color: var(--color-gray);
  line-height: 1.75;
  font-size: 0.95rem;
  margin: 0;
}

.page-home .news-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}

.page-home .news-item {
  border-bottom: 1px solid rgba(201, 162, 39, 0.22);
  padding: 20px 4px;
  transition: background 0.3s ease;
}

.page-home .news-item:first-child {
  padding-top: 0;
}

.page-home .news-item:hover {
  background: rgba(232, 240, 232, 0.5);
}

.page-home .news-item__title {
  margin: 10px 0 6px;
  font-size: 1.03rem;
  line-height: 1.5;
  font-weight: 600;
  font-family: var(--font-body);
}

.page-home .news-item__title a {
  color: inherit;
  text-decoration: none;
}

.page-home .news-item__title a:hover {
  color: var(--color-gold);
}

.page-home .news-item p {
  margin: 0;
  color: var(--color-gray);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ===== 数据与里程碑 ===== */
.page-home .milestone {
  position: relative;
  background: linear-gradient(160deg, var(--color-primary) 0%, #071528 55%, var(--color-primary) 100%);
  color: var(--color-paper);
  padding: var(--section-pad) 0;
  overflow: hidden;
}

.page-home .milestone__decor {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.page-home .milestone__decor img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.13;
  filter: grayscale(1) sepia(0.7) hue-rotate(200deg);
}

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

.page-home .milestone__copy {
  max-width: 600px;
  margin-bottom: 48px;
}

.page-home .milestone__lead {
  color: rgba(245, 240, 230, 0.78);
  line-height: 1.85;
  margin: 16px 0 24px;
}

.page-home .milestone__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

.page-home .milestone__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.page-home .stat-block {
  padding: 26px 22px;
  background: rgba(245, 240, 230, 0.05);
  border: 1px solid rgba(201, 162, 39, 0.25);
  border-radius: var(--radius);
}

.page-home .stat-block__num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--color-gold);
  line-height: 1.1;
  margin-bottom: 8px;
}

.page-home .stat-block__label {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: rgba(245, 240, 230, 0.64);
}

.page-home .milestone__timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 24px;
}

.page-home .milestone__timeline li {
  position: relative;
  padding-left: 34px;
}

.page-home .milestone__timeline li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 9px;
  height: 9px;
  background: var(--color-gold);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(201, 162, 39, 0.18);
}

.page-home .milestone__timeline .mono-label {
  color: var(--color-gold);
}

.page-home .milestone__timeline p {
  color: rgba(245, 240, 230, 0.75);
  line-height: 1.7;
  margin: 4px 0 0;
  font-size: 0.95rem;
}

/* ===== 用户路径：技能树 ===== */
.page-home .path-section {
  background: var(--color-jade);
  padding: var(--section-pad) 0;
}

.page-home .path-section__head {
  margin-bottom: 48px;
  max-width: 640px;
}

.page-home .path-section__desc {
  color: var(--color-gray);
  line-height: 1.75;
  margin-top: 16px;
}

.page-home .skill-tree {
  display: grid;
  gap: 16px;
}

.page-home .skill-node {
  background: var(--color-paper);
  border: 1px solid rgba(201, 162, 39, 0.26);
  border-radius: var(--radius);
  padding: 22px 22px;
  transition: box-shadow 0.3s var(--ease-out), border-color 0.3s var(--ease-out);
}

.page-home .skill-node[data-open] {
  border-color: rgba(201, 162, 39, 0.62);
  box-shadow: 0 10px 28px rgba(10, 30, 63, 0.07);
}

.page-home .skill-node__head {
  display: flex;
  align-items: center;
  gap: 16px;
}

.page-home .skill-node__step {
  font-family: var(--font-mono);
  color: var(--color-gold);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  flex-shrink: 0;
}

.page-home .skill-node__title {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 600;
  margin: 0;
  color: var(--color-ink);
  flex: 1;
  line-height: 1.5;
}

.page-home .skill-node__toggle {
  background: transparent;
  border: 1px solid rgba(201, 162, 39, 0.4);
  border-radius: 50%;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  padding: 0;
  color: var(--color-gold);
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease;
  flex-shrink: 0;
}

.page-home .skill-node__toggle:hover {
  background: var(--color-gold);
  color: var(--color-primary);
}

.page-home .skill-node .accordion__content {
  padding: 16px 0 2px;
  color: var(--color-gray);
  line-height: 1.8;
  font-size: 0.95rem;
}

.page-home .skill-node .accordion__content p {
  margin: 0 0 14px;
}

/* ===== 响应式 ===== */
@media (min-width: 768px) {
  .page-home .split-hero__inner {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 48px;
  }

  .page-home .split-hero__visual {
    max-width: 420px;
    margin: 0 0 0 auto;
  }

  .page-home .service-index__grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-home .service-card--wide {
    grid-column: span 2;
  }

  .page-home .latest-news__grid {
    grid-template-columns: 0.95fr 1.05fr;
    align-items: start;
  }

  .page-home .milestone__content {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-home .milestone__stats {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .page-home .service-index__grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .page-home .service-card--wide {
    grid-column: span 4;
  }

  .page-home .service-card:not(.service-card--wide) {
    grid-column: span 2;
  }

  .page-home .split-hero__visual {
    max-width: 440px;
  }

  .page-home .split-hero .display-title {
    font-size: clamp(3rem, 5.2vw, 4.8rem);
  }
}