.page-home {
  --home-shift-sm: 20px;
  --home-shift-md: 40px;
  background: var(--silver-100);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-home [id] {
  scroll-margin-top: 96px;
}

/* ---------- 封面 ---------- */
.page-home .cover {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(38px, 7vw, 80px) 0 clamp(26px, 4vw, 44px);
  color: var(--silver-100);
  background:
    radial-gradient(120% 90% at 78% 8%, rgba(79, 240, 210, 0.18), transparent 58%),
    radial-gradient(90% 80% at 4% 96%, rgba(255, 106, 43, 0.14), transparent 62%),
    linear-gradient(160deg, var(--teal-900) 0%, #0b2f38 60%, var(--indigo) 100%);
}

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

.page-home .cover__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  mix-blend-mode: screen;
}

.page-home .cover__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 4vw, 46px);
  align-items: start;
}

.page-home .cover__eyebrow {
  display: inline-block;
  padding: 7px 15px;
  border: 1px solid rgba(79, 240, 210, 0.38);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-home .cover__title {
  margin: 20px 0 16px;
  font-size: clamp(32px, 6.2vw, 64px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-home .cover__title em {
  font-style: normal;
  color: var(--cyan);
}

.page-home .cover__lead {
  margin: 0 0 26px;
  max-width: 36em;
  font-size: var(--fs-18);
  line-height: 1.85;
  color: rgba(232, 237, 240, 0.86);
}

/* 检索锚点 */
.page-home .finder {
  max-width: 620px;
}

.page-home .finder__field {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 8px 8px 18px;
  border: 1px solid rgba(79, 240, 210, 0.5);
  border-radius: var(--r-pill);
  background: var(--silver-050);
  color: var(--ink);
  text-decoration: none;
  box-shadow: 0 0 0 8px rgba(79, 240, 210, 0.07), 0 20px 44px rgba(4, 22, 27, 0.45);
  transition: box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-home .finder__field:hover,
.page-home .finder__field:focus-visible {
  border-color: var(--cyan);
  box-shadow: 0 0 0 13px rgba(79, 240, 210, 0.14), 0 22px 48px rgba(4, 22, 27, 0.5);
}

.page-home .finder__icon {
  display: flex;
  flex: none;
  color: var(--teal-800);
}

.page-home .finder__hint {
  flex: 1;
  min-width: 0;
  font-size: var(--fs-15);
  color: var(--ink-soft);
}

.page-home .finder__go {
  flex: none;
  padding: 11px 20px;
  border-radius: var(--r-pill);
  background: var(--orange);
  color: var(--white);
  font-size: var(--fs-15);
  font-weight: 700;
  white-space: nowrap;
}

.page-home .finder__hits {
  display: grid;
  gap: 2px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-home .finder__hit {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(232, 237, 240, 0.12);
  font-size: var(--fs-15);
  line-height: 1.6;
  color: rgba(232, 237, 240, 0.78);
  text-decoration: none;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-home .finder__hit:hover,
.page-home .finder__hit:focus-visible {
  color: var(--white);
  border-color: rgba(79, 240, 210, 0.5);
}

.page-home .finder__hit .mono {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-home mark {
  padding: 0 3px;
  border-radius: 4px;
  background: rgba(79, 240, 210, 0.18);
  color: var(--cyan);
}

/* 数据条 */
.page-home .cover__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.page-home .stat {
  padding-left: 12px;
  border-left: 2px solid rgba(79, 240, 210, 0.4);
}

.page-home .stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-24);
  font-weight: 600;
  color: var(--cyan);
}

.page-home .stat__label {
  display: block;
  margin-top: 4px;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: rgba(232, 237, 240, 0.68);
}

/* 首屏平板图 */
.page-home .cover__shot {
  margin: 0;
  position: relative;
  z-index: 1;
}

.page-home .cover__shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  border: 1px solid rgba(79, 240, 210, 0.3);
  box-shadow: 0 28px 60px rgba(3, 18, 22, 0.55);
}

/* 首屏索引带 */
.page-home .cover__strip {
  position: relative;
  z-index: 1;
  margin-top: clamp(26px, 4vw, 44px);
  padding-top: 16px;
  border-top: 1px solid rgba(232, 237, 240, 0.16);
}

.page-home .cover__strip ol {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .cover__strip a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: var(--fs-15);
  color: rgba(232, 237, 240, 0.8);
  text-decoration: none;
  transition: color 0.25s var(--ease);
}

.page-home .cover__strip a:hover,
.page-home .cover__strip a:focus-visible {
  color: var(--cyan);
}

.page-home .cover__strip .mono {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--gold);
}

/* ---------- 章节带 ---------- */
.page-home .band {
  padding: clamp(38px, 6vw, 76px) 0;
}

.page-home .band--paper {
  background: var(--silver-050);
}

.page-home .band--silver {
  background: var(--silver-100);
}

/* ---------- 堆叠画板 ---------- */
.page-home .board {
  position: relative;
  padding: clamp(22px, 3.6vw, 44px);
  border-radius: var(--r-lg);
}

.page-home .board__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-home .board__num {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-home .board__title {
  margin: 0;
  font-size: clamp(23px, 3.6vw, 32px);
  line-height: 1.28;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-home .board__lead {
  margin: 0;
  max-width: 48em;
  font-size: var(--fs-18);
  line-height: 1.85;
}

.page-home .board--light {
  background: var(--white);
  border: 1px solid rgba(14, 59, 69, 0.1);
  box-shadow: 0 22px 48px rgba(16, 44, 52, 0.06);
}

.page-home .board--light .board__title {
  color: var(--teal-900);
}

.page-home .board--light .board__lead {
  color: var(--ink-soft);
}

.page-home .board--indigo {
  background: linear-gradient(150deg, var(--indigo) 0%, var(--indigo-deep) 100%);
  color: var(--silver-100);
}

.page-home .board--indigo .board__num {
  color: var(--cyan);
}

.page-home .board--indigo .board__title {
  color: var(--white);
}

.page-home .board--indigo .board__lead {
  color: rgba(232, 237, 240, 0.8);
}

.page-home .board--wine {
  background: linear-gradient(150deg, var(--wine) 0%, var(--wine-deep) 100%);
  color: var(--silver-100);
}

.page-home .board--wine .board__num {
  color: var(--gold);
}

.page-home .board--wine .board__title {
  color: var(--white);
}

.page-home .board--wine .board__lead {
  color: rgba(232, 237, 240, 0.82);
}

/* ---------- 三标签通道 ---------- */
.page-home .tabs__rail {
  display: none;
}

.page-home .tabs {
  display: grid;
  gap: 12px;
}

.page-home .tab {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  border: 1px solid rgba(14, 59, 69, 0.12);
  border-radius: var(--r-md);
  background: var(--silver-050);
  color: var(--ink);
  text-decoration: none;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-home .tab:hover,
.page-home .tab:focus-visible {
  transform: translateY(-4px);
  border-color: var(--cyan);
  background: var(--white);
}

.page-home .tab__num {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--teal-700);
}

.page-home .tab__label {
  font-size: var(--fs-18);
  font-weight: 800;
  color: var(--teal-900);
}

.page-home .tab__desc {
  font-size: var(--fs-15);
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-home .tab__arrow {
  margin-top: auto;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-15);
  color: var(--teal-700);
}

.page-home .tab--accent {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 106, 43, 0.12);
}

.page-home .tab--accent .tab__num,
.page-home .tab--accent .tab__arrow {
  color: var(--orange);
}

.page-home .tabs__note {
  margin: 18px 0 0;
  font-size: var(--fs-15);
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 版本对照 ---------- */
.page-home .compare {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
}

.page-home .compare__labels {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-home .compare__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(79, 240, 210, 0.3);
  border-radius: var(--r-md);
  background: #0b1a2a;
}

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

.page-home .compare__divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: var(--cyan);
  box-shadow: 0 0 14px rgba(79, 240, 210, 0.9);
}

.page-home .compare__caption {
  margin: 10px 0 0;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: rgba(232, 237, 240, 0.62);
}

.page-home .dims {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .dims li {
  display: grid;
  gap: 5px;
  padding: 12px 0 12px 14px;
  border-left: 2px solid rgba(79, 240, 210, 0.35);
}

.page-home .dims__k {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-home .dims__v {
  font-size: var(--fs-15);
  line-height: 1.7;
  color: rgba(232, 237, 240, 0.82);
}

.page-home .dims__v b {
  margin-right: 6px;
  font-weight: 700;
  color: var(--white);
}

.page-home .compare__side .go-link {
  margin-top: 22px;
}

/* ---------- 按钮 ---------- */
.page-home .go-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  border-radius: var(--r-pill);
  background: var(--orange);
  color: var(--white);
  font-size: var(--fs-15);
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-home .go-link:hover,
.page-home .go-link:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(255, 106, 43, 0.32);
}

.page-home .go-link--ghost {
  background: transparent;
  border: 1px solid rgba(79, 240, 210, 0.55);
  color: var(--cyan);
}

.page-home .go-link--ghost:hover,
.page-home .go-link--ghost:focus-visible {
  box-shadow: 0 14px 30px rgba(79, 240, 210, 0.16);
}

/* ---------- 栏目索引 ---------- */
.page-home .toc {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .toc__item + .toc__item {
  border-top: 1px solid rgba(14, 59, 69, 0.12);
}

.page-home .toc__link {
  display: grid;
  grid-template-columns: 2.6em minmax(0, 1fr) 1.6em;
  gap: 12px;
  align-items: baseline;
  padding: 16px 6px;
  border-radius: var(--r-sm);
  color: var(--ink);
  text-decoration: none;
  transition: background-color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-home .toc__link:hover,
.page-home .toc__link:focus-visible {
  padding-left: 14px;
  background: var(--silver-050);
}

.page-home .toc__num {
  font-family: var(--font-mono);
  font-size: var(--fs-15);
  font-weight: 600;
  color: var(--teal-700);
}

.page-home .toc__body {
  display: grid;
  gap: 4px;
}

.page-home .toc__name {
  font-size: var(--fs-18);
  font-weight: 800;
  color: var(--teal-900);
}

.page-home .toc__desc {
  font-size: var(--fs-15);
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-home .toc__arrow {
  font-family: var(--font-mono);
  font-size: var(--fs-15);
  color: var(--teal-700);
  text-align: right;
}

/* ---------- 公告抽屉 ---------- */
.page-home .notice__toggle {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 15px 18px;
  border: 1px solid rgba(233, 180, 76, 0.42);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.06);
  color: var(--silver-100);
  font-family: inherit;
  font-size: var(--fs-15);
  line-height: 1.6;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-home .notice__toggle:hover,
.page-home .notice__toggle:focus-visible {
  border-color: var(--gold);
  background: rgba(255, 255, 255, 0.1);
}

.page-home .notice__badge {
  flex: none;
  padding: 4px 10px;
  border: 1px solid rgba(233, 180, 76, 0.55);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--gold);
  white-space: nowrap;
}

.page-home .notice__summary {
  flex: 1;
  min-width: 0;
}

.page-home .notice__chev {
  flex: none;
  color: var(--gold);
  transition: transform 0.3s var(--ease);
}

.page-home .notice__toggle[aria-expanded="true"] .notice__chev {
  transform: rotate(180deg);
}

.page-home .notice__panel {
  padding-top: 20px;
}

.page-home .notice__panel[hidden],
.page-home .notice[data-open="false"] .notice__panel {
  display: none;
}

.page-home .notice__body {
  display: grid;
  gap: 22px;
}

.page-home .notice__list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .notice__list li {
  display: flex;
  gap: 10px;
  font-size: var(--fs-15);
  line-height: 1.78;
  color: rgba(232, 237, 240, 0.86);
}

.page-home .notice__list .mono {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--gold);
}

.page-home .notice__tip {
  margin: 16px 0 0;
  padding: 12px 16px;
  border-left: 2px solid var(--gold);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(255, 255, 255, 0.07);
  font-size: var(--fs-15);
  line-height: 1.75;
  color: rgba(232, 237, 240, 0.86);
}

.page-home .notice__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-home .notice__media {
  margin: 0;
}

.page-home .notice__media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(233, 180, 76, 0.3);
  border-radius: var(--r-md);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-home .dims {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-home .tabs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .tabs__rail {
    display: flex;
    height: 3px;
    margin-bottom: 16px;
    border-radius: var(--r-pill);
    background: rgba(14, 59, 69, 0.1);
    overflow: hidden;
  }

  .page-home .tabs__rail span {
    flex: 1;
  }

  .page-home .tabs__rail span:first-child {
    background: var(--teal-800);
  }

  .page-home .notice__body {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-home .board--shift-1 {
    margin-left: var(--home-shift-sm);
  }

  .page-home .board--shift-2 {
    margin-left: var(--home-shift-md);
  }
}

@media (min-width: 980px) {
  .page-home .cover__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }

  .page-home .cover__shot {
    margin-top: 34px;
    transform: translateX(10px);
  }

  .page-home .compare {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }

  .page-home .compare .dims {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 420px) {
  .page-home .finder__field {
    flex-wrap: wrap;
    padding: 12px 14px;
    border-radius: var(--r-md);
  }

  .page-home .finder__go {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .tab,
  .page-home .go-link,
  .page-home .toc__link,
  .page-home .cover__shot,
  .page-home .notice__chev {
    transition: none;
  }

  .page-home .tab:hover,
  .page-home .go-link:hover {
    transform: none;
  }

  .page-home .cover__shot {
    transform: none;
  }
}