/* ============================================================
   首页 · page-home
   首屏非对称分栏 → 导航总览 → 资料下载 → 版本切换 → 更新记录 → 咨询
   ============================================================ */

.page-home {
  --ph-line-soft: rgba(47, 216, 200, .28);
  --ph-panel: rgba(14, 34, 51, .72);
  background: var(--ink-800);
  color: var(--text);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */

.page-home .hero {
  position: relative;
  padding: calc(var(--header-h) + 2.25rem) 0 clamp(2.5rem, 6vw, 4.5rem);
  background:
    radial-gradient(115% 85% at 88% 4%, rgba(47, 216, 200, .13), transparent 58%),
    radial-gradient(75% 65% at 2% 98%, rgba(255, 138, 61, .09), transparent 62%),
    var(--ink-800);
}

.page-home .hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 5vw, 3rem);
}

.page-home .hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 8vw, 3.5rem);
  line-height: 1.04;
  letter-spacing: .005em;
  margin: .7rem 0 1rem;
  color: var(--text);
}

.page-home .hero__lede {
  max-width: 33rem;
  color: var(--text-soft);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.85rem;
}

.page-home .hero__stage {
  display: grid;
  gap: 1rem;
}

/* ---------- 编号流程（首屏与版本区共用） ---------- */

.page-home .flow {
  display: grid;
  gap: .1rem;
  margin: 1.85rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: ph-flow;
}

.page-home .flow__item {
  position: relative;
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: .9rem;
  padding: .85rem 0;
}

.page-home .flow__item::before {
  content: "";
  position: absolute;
  left: 1.18rem;
  top: 2.7rem;
  bottom: -.1rem;
  width: 1px;
  background: linear-gradient(180deg, var(--ph-line-soft), rgba(47, 216, 200, 0));
}

.page-home .flow__item:last-child::before {
  display: none;
}

.page-home .flow__num {
  display: grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  border: 1px solid var(--rock);
  border-radius: var(--pill);
  background: var(--ink-800);
  color: var(--cyan);
  font-size: .78rem;
  font-weight: 600;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.page-home .flow__item:hover .flow__num {
  border-color: var(--cyan);
}

.page-home .flow__title {
  margin: .3rem 0 .25rem;
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
}

.page-home .flow__text {
  margin: 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-home .flow--inline {
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

/* ---------- 媒体框 ---------- */

.page-home .shot {
  position: relative;
  margin: 0;
  border: 1px solid var(--rock);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-750);
}

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

.page-home .shot::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(147, 166, 181, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(147, 166, 181, .07) 1px, transparent 1px);
  background-size: 46px 46px;
}

.page-home .shot--4x3 { aspect-ratio: 4 / 3; }
.page-home .shot--5x3 { aspect-ratio: 5 / 3; }
.page-home .shot--3x2 { aspect-ratio: 3 / 2; }
.page-home .shot--9x5 { aspect-ratio: 9 / 5; }

/* ---------- 首屏快捷卡 ---------- */

.page-home .quickgrid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .quick__link {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  height: 100%;
  padding: .95rem 1.05rem 1.05rem;
  border: 1px solid var(--rock);
  border-radius: var(--radius-md);
  background: var(--ph-panel);
  color: var(--text);
  text-decoration: none;
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}

.page-home .quick__link:hover,
.page-home .quick__link:focus-visible {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-home .quick__num {
  color: var(--cyan);
  font-size: .72rem;
}

.page-home .quick__label {
  font-size: .95rem;
  font-weight: 600;
}

.page-home .quick__note {
  font-size: .78rem;
  color: var(--text-dim);
}

/* ---------- 通用区块节奏 ---------- */

.page-home .band--deep { background: var(--ink-900); }
.page-home .band--alt { background: var(--ink-750); }

.page-home .downloads__head,
.page-home .updates__head {
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
}

.page-home .section-num {
  color: var(--cyan);
}

/* ---------- 导航总览 ---------- */

.page-home .navmap {
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--rock);
}

.page-home .navmap__item {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  gap: .3rem .9rem;
  align-items: baseline;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--rock);
  transition: border-color .2s var(--ease);
}

.page-home .navmap__item:hover {
  border-bottom-color: var(--cyan);
}

.page-home .navmap__num {
  color: var(--fog);
  font-size: .78rem;
  transition: color .2s var(--ease);
}

.page-home .navmap__item:hover .navmap__num {
  color: var(--cyan);
}

.page-home .navmap__link {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.22rem;
  letter-spacing: .01em;
  color: var(--text);
  text-decoration: none;
  transition: color .2s var(--ease);
}

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

.page-home .navmap__desc {
  grid-column: 2 / -1;
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-home .navmap__flag {
  grid-column: 2 / -1;
  justify-self: start;
  margin-top: .15rem;
}

/* ---------- 资料下载 ---------- */

.page-home .datagrid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.page-home .datacard {
  border: 1px solid var(--rock);
  border-radius: var(--radius-lg);
  background: var(--ink-800);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}

.page-home .datacard:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
}

.page-home .datacard__link {
  display: flex;
  flex-direction: column;
  gap: .55rem;
  height: 100%;
  padding: 1.35rem 1.4rem 1.5rem;
  color: inherit;
  text-decoration: none;
}

.page-home .datacard__title {
  margin: .2rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: .01em;
  color: var(--text);
}

.page-home .datacard__text {
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-home .datacard__meta {
  margin: auto 0 0;
  padding-top: .9rem;
  border-top: 1px dashed var(--rock);
  font-size: .76rem;
  color: var(--text-dim);
}

.page-home .note {
  margin-top: 2rem;
}

/* ---------- 版本切换 ---------- */

.page-home .versplit {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
  margin-top: 2rem;
}

.page-home .vspanel__text {
  margin: 1.1rem 0 .9rem;
  font-size: .98rem;
  line-height: 1.9;
  color: var(--text-soft);
}

.page-home .vspanel__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .55rem;
}

.page-home .vspanel__list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-home .vspanel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68rem;
  width: 6px;
  height: 6px;
  border-radius: var(--pill);
  background: var(--cyan);
}

/* ---------- 更新记录 ---------- */

.page-home .updates {
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.page-home .update {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .4rem;
  padding: 1.15rem 0;
  border-bottom: 1px dashed var(--rock);
}

.page-home .update:first-child {
  border-top: 1px dashed var(--rock);
}

.page-home .update__stamp {
  display: flex;
  align-items: baseline;
  gap: .6rem;
}

.page-home .update__issue {
  font-size: .76rem;
  font-weight: 600;
  color: var(--cyan);
}

.page-home .update__when {
  font-size: .74rem;
  color: var(--fog);
}

.page-home .update__title {
  margin: 0 0 .3rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
}

.page-home .update__text {
  margin: 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-home .updates__foot {
  margin-top: 1.5rem;
  color: var(--text-dim);
}

/* ---------- 常用工具与咨询 ---------- */

.page-home .helpgrid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

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

.page-home .helplist__row {
  border-bottom: 1px solid var(--rock);
  transition: border-color .2s var(--ease);
}

.page-home .helplist__row:hover {
  border-bottom-color: var(--cyan);
}

.page-home .helplist__link {
  display: grid;
  gap: .25rem;
  padding: 1.05rem .25rem;
  color: inherit;
  text-decoration: none;
}

.page-home .helplist__label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.18rem;
  letter-spacing: .01em;
  color: var(--text);
  transition: color .2s var(--ease);
}

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

.page-home .helplist__note {
  font-size: .88rem;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-home .contactcard {
  padding: 1.5rem 1.4rem 1.6rem;
  border: 1px solid var(--rock);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(160deg, rgba(47, 216, 200, .09), rgba(10, 27, 42, 0) 58%),
    var(--ink-750);
}

.page-home .contactcard__label {
  margin: 0 0 .7rem;
  font-size: .74rem;
  color: var(--cyan);
}

.page-home .contactcard__title {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: .01em;
  color: var(--text);
}

.page-home .contactcard__text {
  margin: 0 0 1.15rem;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-home .contactcard__rows {
  margin: 0 0 1.35rem;
  padding: 0;
  display: grid;
  gap: .8rem;
}

.page-home .contactcard__row {
  display: grid;
  gap: .2rem;
  padding-bottom: .8rem;
  border-bottom: 1px dashed var(--rock);
}

.page-home .contactcard__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-home .contactcard__row dt {
  font-size: .76rem;
  color: var(--text-dim);
}

.page-home .contactcard__row dd {
  margin: 0;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--text);
  word-break: break-word;
}

/* ============================================================
   响应式
   ============================================================ */

@media (min-width: 640px) {
  .page-home .datagrid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .helpgrid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 2rem;
    align-items: start;
  }
}

@media (min-width: 860px) {
  .page-home .hero__grid {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.28fr);
    align-items: start;
    gap: clamp(2rem, 4.5vw, 3.5rem);
  }

  .page-home .navmap__item {
    grid-template-columns: 3.2rem minmax(8rem, 11rem) minmax(0, 1fr) auto;
    gap: 1.25rem;
    align-items: center;
    padding: 1.25rem 0;
  }

  .page-home .navmap__desc {
    grid-column: auto;
  }

  .page-home .navmap__flag {
    grid-column: auto;
    justify-self: end;
    margin-top: 0;
  }

  .page-home .versplit {
    grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr);
    gap: clamp(2rem, 4vw, 3.25rem);
    align-items: start;
  }

  .page-home .flow--inline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
  }

  .page-home .flow--inline .flow__item::before {
    display: none;
  }

  .page-home .update {
    grid-template-columns: 9.5rem minmax(0, 1fr);
    gap: 1.75rem;
    align-items: baseline;
  }

  .page-home .update__stamp {
    flex-direction: column;
    gap: .2rem;
  }
}

@media (min-width: 1080px) {
  .page-home .datagrid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-home .quickgrid {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-home .hero__actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .quick__link,
  .page-home .datacard,
  .page-home .flow__num,
  .page-home .navmap__item,
  .page-home .helplist__row {
    transition: none;
  }

  .page-home .quick__link:hover,
  .page-home .quick__link:focus-visible,
  .page-home .datacard:hover {
    transform: none;
  }
}