.page-home {
  --hm-line: 1px solid var(--c-line-0);
  --hm-panel: rgba(21, 17, 38, 0.72);
  --hm-radius: var(--r-lg);
  --hm-gap: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-home .home-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(28px, 5vw, 56px) clamp(32px, 5vw, 64px);
  background:
    radial-gradient(120% 90% at 12% -10%, rgba(139, 92, 246, 0.40), transparent 62%),
    radial-gradient(90% 80% at 92% 4%, rgba(34, 211, 238, 0.22), transparent 66%),
    radial-gradient(70% 60% at 50% 100%, rgba(255, 122, 61, 0.12), transparent 70%),
    var(--c-void);
  border-bottom: var(--hm-line);
}

.page-home .hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.26;
  filter: saturate(1.1);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.92), rgba(0, 0, 0, 0.15) 88%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.92), rgba(0, 0, 0, 0.15) 88%);
  pointer-events: none;
}

.page-home .hero-inner {
  position: relative;
  z-index: 1;
}

.page-home .hero-head {
  max-width: 62ch;
}

.page-home .hero-badge {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin: 0 0 var(--sp-5);
  flex-wrap: wrap;
}

.page-home .hero-badge-text {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--c-paper-3);
}

.page-home .hero-title {
  margin: 0 0 var(--sp-5);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.95rem, 5.2vw, 3.9rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--c-paper);
  text-wrap: balance;
}

.page-home .hero-lead {
  margin: 0 0 var(--sp-6);
  max-width: 52ch;
  font-size: clamp(0.98rem, 1.5vw, 1.12rem);
  line-height: 1.8;
  color: var(--c-paper-2);
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-home .hero-actions .btn {
  flex: 1 1 auto;
  min-width: 148px;
  justify-content: center;
}

/* 首屏数据带 */
.page-home .hero-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-4);
  margin: 0 0 clamp(24px, 4vw, 44px);
  padding: 0;
  list-style: none;
}

.page-home .fact {
  padding: var(--sp-4) var(--sp-4) var(--sp-4) var(--sp-5);
  background: var(--hm-panel);
  border: 1px solid var(--c-line-v);
  border-radius: var(--r-md);
  position: relative;
  overflow: hidden;
}

.page-home .fact::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--c-violet), var(--c-cyan));
}

.page-home .fact-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  line-height: 1.1;
  color: var(--c-gold);
}

.page-home .fact-label {
  display: block;
  margin-top: var(--sp-2);
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--c-paper-3);
}

/* 章节预览 */
.page-home .chapter-preview {
  padding: var(--sp-5);
  background: linear-gradient(160deg, rgba(21, 17, 38, 0.9), rgba(11, 7, 20, 0.6));
  border: 1px solid var(--c-line-c);
  border-radius: var(--hm-radius);
  box-shadow: var(--glow-v);
}

.page-home .chapter-preview-title {
  margin: 0 0 var(--sp-4);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
  text-transform: uppercase;
}

.page-home .chapter-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .chapter-link {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "idx name"
    "idx note";
  column-gap: var(--sp-4);
  padding: var(--sp-3) var(--sp-4);
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-home .chapter-link:hover,
.page-home .chapter-link:focus-visible {
  border-color: var(--c-line-v);
  background: rgba(139, 92, 246, 0.12);
  transform: translateX(3px);
}

.page-home .chapter-idx {
  grid-area: idx;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--c-gold);
}

.page-home .chapter-name {
  grid-area: name;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--c-paper);
}

.page-home .chapter-note {
  grid-area: note;
  font-size: 0.78rem;
  color: var(--c-paper-3);
}

/* ---------- 通用章节 ---------- */
.page-home .hm-section {
  padding-block: clamp(44px, 7vw, 96px);
  position: relative;
}

.page-home .hm-section .section-head {
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-home .hm-section .section-desc {
  max-width: 56ch;
}

.page-home .hm-section--start {
  background: linear-gradient(180deg, rgba(21, 17, 38, 0.55), transparent 70%);
}

.page-home .hm-section--catalog {
  border-top: var(--hm-line);
  border-bottom: var(--hm-line);
  background:
    radial-gradient(80% 60% at 100% 0%, rgba(34, 211, 238, 0.10), transparent 68%),
    var(--c-void);
}

.page-home .hm-section--codes {
  background: linear-gradient(200deg, rgba(139, 92, 246, 0.14), transparent 58%);
}

.page-home .hm-section--download {
  border-top: var(--hm-line);
  background: linear-gradient(180deg, rgba(255, 122, 61, 0.07), transparent 55%);
}

/* ---------- 四步起步 ---------- */
.page-home .steps {
  display: grid;
  gap: clamp(24px, 3.5vw, 40px);
}

.page-home .step-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--sp-3);
}

.page-home .step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5);
  background: var(--hm-panel);
  border: 1px solid var(--c-line-0);
  border-radius: var(--r-md);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-home .step:hover {
  border-color: var(--c-line-c);
  box-shadow: var(--glow-c);
}

.page-home .step-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.86rem;
  color: var(--c-cyan);
  padding-top: 4px;
}

.page-home .step-title {
  margin: 0 0 var(--sp-2);
  font-family: var(--font-head);
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--c-paper);
}

.page-home .step-text {
  margin: 0 0 var(--sp-3);
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--c-paper-2);
}

.page-home .step-link {
  display: inline-block;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--c-violet);
  text-decoration: none;
  border-bottom: 1px solid rgba(139, 92, 246, 0.45);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-home .step-link:hover,
.page-home .step-link:focus-visible {
  color: var(--c-cyan);
  border-color: var(--c-cyan);
}

.page-home .step-visual {
  margin: 0;
}

.page-home .step-visual .media-caption,
.page-home .cal-visual .media-caption,
.page-home .code-visual .media-caption {
  margin-top: var(--sp-3);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--c-paper-3);
}

/* ---------- 分类索引 ---------- */
.page-home .cat-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin: 0 0 var(--sp-5);
  padding: 0;
  list-style: none;
}

.page-home .cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--sp-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .cat-card {
  position: relative;
  padding: var(--sp-4);
  padding-top: var(--sp-5);
  background: rgba(21, 17, 38, 0.78);
  border: 1px solid var(--c-line-0);
  border-radius: var(--r-md);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-home .cat-card:hover {
  transform: translateY(-3px);
  border-color: var(--c-line-v);
  background: rgba(42, 37, 56, 0.9);
}

.page-home .cat-idx {
  position: absolute;
  top: var(--sp-3);
  right: var(--sp-3);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--c-paper-3);
}

.page-home .cat-dot {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: var(--r-pill);
  margin-bottom: var(--sp-3);
}

.page-home .cat-dot--a { background: var(--c-violet); box-shadow: 0 0 12px rgba(139, 92, 246, 0.85); }
.page-home .cat-dot--b { background: var(--c-cyan); box-shadow: 0 0 12px rgba(34, 211, 238, 0.8); }
.page-home .cat-dot--c { background: var(--c-gold); box-shadow: 0 0 12px rgba(255, 209, 102, 0.75); }

.page-home .cat-name {
  margin: 0 0 var(--sp-2);
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-paper);
}

.page-home .cat-note {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--c-paper-3);
}

.page-home .cat-foot {
  margin: var(--sp-5) 0 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--c-paper-2);
}

.page-home .cat-foot a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, 0.45);
}

.page-home .cat-foot a:hover,
.page-home .cat-foot a:focus-visible {
  color: var(--c-gold);
  border-color: var(--c-gold);
}

/* ---------- 开区日历 ---------- */
.page-home .cal-layout {
  display: grid;
  gap: clamp(24px, 3.5vw, 40px);
}

.page-home .cal-board {
  padding: clamp(18px, 3vw, 30px);
  background: linear-gradient(155deg, rgba(21, 17, 38, 0.92), rgba(11, 7, 20, 0.7));
  border: 1px solid var(--c-line-c);
  border-radius: var(--hm-radius);
}

.page-home .cal-board-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-2);
  margin: 0 0 var(--sp-4);
}

.page-home .cal-board-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  color: var(--c-paper);
}

.page-home .cal-board-meta {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
}

.page-home .cal-strip {
  display: flex;
  gap: var(--sp-2);
  overflow-x: auto;
  padding-bottom: var(--sp-2);
  scrollbar-width: thin;
}

.page-home .cal-cell {
  position: relative;
  flex: 0 0 92px;
  padding: var(--sp-3) var(--sp-2);
  text-align: center;
  background: rgba(11, 7, 20, 0.72);
  border: 1px solid var(--c-line-0);
  border-radius: var(--r-sm);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-home .cal-cell:hover,
.page-home .cal-cell:focus-within {
  border-color: var(--c-cyan);
  background: rgba(34, 211, 238, 0.10);
}

.page-home .cal-cell.is-today {
  border-color: var(--c-mint);
  background: rgba(74, 222, 128, 0.10);
  box-shadow: 0 0 22px -8px rgba(74, 222, 128, 0.75);
}

.page-home .cal-day {
  display: block;
  font-size: 0.74rem;
  color: var(--c-paper-3);
}

.page-home .cal-cell.is-today .cal-day {
  color: var(--c-mint);
  font-weight: 700;
}

.page-home .cal-count {
  display: block;
  margin: var(--sp-1) 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.35rem;
  line-height: 1.2;
  color: var(--c-paper);
}

.page-home .cal-cell.is-today .cal-count {
  color: var(--c-mint);
}

.page-home .cal-tip {
  display: block;
  font-size: 0.68rem;
  line-height: 1.4;
  color: var(--c-cyan);
  opacity: 0;
  transform: translateY(3px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-home .cal-cell:hover .cal-tip,
.page-home .cal-cell:focus-within .cal-tip {
  opacity: 1;
  transform: translateY(0);
}

.page-home .cal-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-3);
  margin-top: var(--sp-5);
}

.page-home .cal-hint {
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--c-paper-3);
}

.page-home .cal-visual {
  margin: 0;
}

/* ---------- 礼包版本 ---------- */
.page-home .code-layout {
  display: grid;
  gap: clamp(24px, 3.5vw, 40px);
}

.page-home .code-visual {
  margin: 0;
}

.page-home .code-board {
  padding: clamp(18px, 3vw, 30px);
  background: rgba(21, 17, 38, 0.86);
  border: 1px solid var(--c-line-v);
  border-radius: var(--hm-radius);
}

.page-home .code-board-head {
  margin: 0 0 var(--sp-4);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--c-gold);
}

.page-home .code-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--sp-2);
}

.page-home .code-row {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "ver state"
    "meta state";
  align-items: center;
  gap: 0 var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  background: rgba(11, 7, 20, 0.66);
  border: 1px solid var(--c-line-0);
  border-radius: var(--r-sm);
}

.page-home .code-ver {
  grid-area: ver;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.94rem;
  color: var(--c-paper);
}

.page-home .code-state {
  grid-area: state;
  font-size: 0.72rem;
  padding: 3px 9px;
  border-radius: var(--r-pill);
  color: var(--c-paper-3);
  border: 1px solid rgba(244, 241, 234, 0.16);
  white-space: nowrap;
}

.page-home .code-state--ok {
  color: var(--c-mint);
  border-color: rgba(74, 222, 128, 0.55);
  background: rgba(74, 222, 128, 0.10);
}

.page-home .code-meta {
  grid-area: meta;
  font-size: 0.74rem;
  color: var(--c-paper-3);
}

.page-home .code-foot {
  margin: var(--sp-5) 0 0;
  font-size: 0.84rem;
  line-height: 1.8;
  color: var(--c-paper-2);
}

.page-home .code-foot a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, 0.45);
}

.page-home .code-foot a:hover,
.page-home .code-foot a:focus-visible {
  color: var(--c-gold);
  border-color: var(--c-gold);
}

/* ---------- 下载与服务保障 ---------- */
.page-home .dl-grid {
  display: grid;
  gap: var(--sp-3);
}

.page-home .dl-card {
  padding: clamp(18px, 2.6vw, 28px);
  background: var(--hm-panel);
  border: 1px solid var(--c-line-0);
  border-radius: var(--hm-radius);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.page-home .dl-card--wide {
  background:
    linear-gradient(150deg, rgba(139, 92, 246, 0.22), rgba(255, 122, 61, 0.12)),
    rgba(21, 17, 38, 0.92);
  border-color: var(--c-line-v);
}

.page-home .dl-card-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--c-paper);
}

.page-home .dl-card-text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--c-paper-2);
}

.page-home .dl-meta {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--sp-2);
}

.page-home .dl-meta li {
  display: flex;
  justify-content: space-between;
  gap: var(--sp-3);
  padding-bottom: var(--sp-2);
  border-bottom: 1px dashed rgba(244, 241, 234, 0.12);
  font-size: 0.8rem;
}

.page-home .dl-meta-k {
  color: var(--c-paper-3);
}

.page-home .dl-meta-v {
  font-family: var(--font-mono);
  color: var(--c-gold);
  text-align: right;
}

.page-home .dl-contact {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--sp-2);
}

.page-home .dl-contact a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--c-cyan);
  text-decoration: none;
  word-break: break-all;
}

.page-home .dl-contact a:hover,
.page-home .dl-contact a:focus-visible {
  color: var(--c-gold);
}

.page-home .dl-card .btn {
  align-self: flex-start;
}

.page-home .fixed-strip {
  margin-top: clamp(24px, 3.5vw, 40px);
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--c-line-c);
  border-radius: var(--hm-radius);
  background: linear-gradient(120deg, rgba(34, 211, 238, 0.10), rgba(139, 92, 246, 0.14));
  box-shadow: var(--glow-c);
}

.page-home .fixed-strip-title {
  margin: 0 0 var(--sp-4);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  color: var(--c-paper);
}

.page-home .fixed-strip-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin: 0 0 var(--sp-3);
  padding: 0;
  list-style: none;
}

.page-home .fixed-strip-note {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--c-paper-3);
}

/* ---------- 响应式 ---------- */
@media (max-width: 719px) {
  .page-home .cal-cell {
    flex-basis: 84px;
  }

  .page-home .cal-tip {
    opacity: 1;
    transform: none;
  }

  .page-home .hero-facts {
    gap: var(--sp-2);
  }
}

@media (min-width: 720px) {
  .page-home .hero-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .chapter-list {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  }

  .page-home .cal-strip {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    overflow: visible;
  }

  .page-home .cal-cell {
    flex: initial;
  }

  .page-home .dl-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .dl-card--wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1024px) {
  .page-home .hero-lead {
    font-size: 1.12rem;
  }

  .page-home .steps {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }

  .page-home .step-visual {
    position: sticky;
    top: calc(var(--bar-h) + var(--sp-5));
  }

  .page-home .cal-layout {
    grid-template-columns: 1.4fr 1fr;
    align-items: center;
  }

  .page-home .code-layout {
    grid-template-columns: 0.8fr 1.2fr;
    align-items: start;
  }

  .page-home .dl-grid {
    grid-template-columns: 1.3fr 1fr 1fr;
  }

  .page-home .dl-card--wide {
    grid-column: auto;
  }

  .page-home .cat-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1440px) {
  .page-home .cat-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .cat-card,
  .page-home .chapter-link,
  .page-home .step,
  .page-home .cal-tip {
    transition: none;
  }

  .page-home .cat-card:hover,
  .page-home .chapter-link:hover {
    transform: none;
  }
}
<<<END>>>