.page-home {
  --ph-grid: 72px;
  --ph-gap: 44px;
  position: relative;
  background: var(--gr-ink);
  color: var(--gr-text);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-home .ph-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 44px 0 48px;
  border-bottom: 1px solid var(--gr-line);
  background:
    radial-gradient(120% 96% at 84% -14%, rgba(108, 59, 255, .42), transparent 62%),
    radial-gradient(88% 72% at 6% 4%, rgba(59, 31, 153, .55), transparent 64%),
    var(--gr-ink);
}

.page-home .ph-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .18;
  pointer-events: none;
}

.page-home .ph-hero::before {
  content: "";
  position: absolute;
  inset: -12%;
  z-index: 1;
  background-image:
    linear-gradient(to right, rgba(35, 35, 52, .75) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(35, 35, 52, .75) 1px, transparent 1px);
  background-size: var(--ph-grid) var(--ph-grid);
  animation: ph-grid-drift 20s linear infinite;
  pointer-events: none;
}

.page-home .ph-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(180deg, rgba(11, 11, 16, .55) 0%, rgba(11, 11, 16, .9) 76%, var(--gr-ink) 100%);
  pointer-events: none;
}

.page-home .ph-hero__inner {
  position: relative;
  z-index: 3;
}

.page-home .ph-hero__crumb {
  margin: 0 0 22px;
  color: var(--gr-muted);
}

.page-home .ph-hero__title {
  margin: 0;
  max-width: 16ch;
  font-size: clamp(38px, 7.2vw, 84px);
  font-weight: 250;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--gr-bright);
}

.page-home .ph-hero__lead {
  margin: 24px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.85;
  color: var(--gr-text);
}

/* ---------- 首屏路径预览带 ---------- */
.page-home .ph-routes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 36px;
}

.page-home .ph-route {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  align-items: baseline;
  gap: 4px 14px;
  padding: 18px 20px;
  border: 1px solid var(--gr-line);
  border-radius: var(--gr-r-lg);
  background: linear-gradient(158deg, rgba(20, 20, 31, .94), rgba(11, 11, 16, .8));
  color: var(--gr-text);
  text-decoration: none;
  transition: transform .2s var(--gr-ease), border-color .2s var(--gr-ease), box-shadow .2s var(--gr-ease);
}

.page-home .ph-route__no {
  grid-row: 1 / span 2;
  color: var(--gr-violet-soft);
  font-size: 13px;
  letter-spacing: .08em;
}

.page-home .ph-route__name {
  font-size: 16px;
  font-weight: 500;
  color: var(--gr-bright);
}

.page-home .ph-route__desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--gr-muted);
}

.page-home .ph-route:hover,
.page-home .ph-route:focus-visible {
  transform: translateY(-2px);
  border-color: var(--gr-violet-soft);
  box-shadow: var(--gr-shadow-lift);
}

.page-home .ph-route:focus-visible {
  outline: 2px solid var(--gr-green);
  outline-offset: 2px;
}

/* ---------- 主体骨架 ---------- */
.page-home .ph-body {
  padding-top: 56px;
  padding-bottom: 72px;
}

.page-home .ph-index__kicker {
  margin: 0 0 14px;
  color: var(--gr-muted);
}

.page-home .ph-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-home .ph-index__list li a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--gr-line);
  border-radius: var(--gr-r-pill);
  font-size: 13px;
  color: var(--gr-text);
  text-decoration: none;
  transition: border-color .2s var(--gr-ease), color .2s var(--gr-ease);
}

.page-home .ph-index__list li a .gr-mono {
  color: var(--gr-violet-soft);
  font-size: 11px;
}

.page-home .ph-index__list li a:hover {
  border-color: var(--gr-violet-soft);
  color: var(--gr-bright);
}

.page-home .ph-index__note {
  margin: 18px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--gr-muted);
}

.page-home .ph-data > .gr-section + .gr-section {
  margin-top: var(--ph-gap);
}

.page-home .ph-data .gr-section__title {
  color: var(--gr-bright);
  font-weight: 350;
  letter-spacing: -0.01em;
}

.page-home .ph-data .gr-section__lead {
  max-width: 66ch;
  line-height: 1.85;
  color: var(--gr-text);
}

/* ---------- 01 联赛导航 ---------- */
.page-home .ph-league__stage {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 26px;
}

.page-home .ph-league__tabs {
  border: 1px solid var(--gr-line);
  border-radius: var(--gr-r-xl);
  background: linear-gradient(170deg, rgba(20, 20, 31, .9), rgba(11, 11, 16, .7));
  padding: 20px 20px 24px;
}

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

.page-home .ph-facts li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: baseline;
  font-size: 15px;
  line-height: 1.75;
  color: var(--gr-text);
}

.page-home .ph-facts li .gr-mono {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--gr-green-deep);
}

.page-home .ph-facts--tight li {
  font-size: 14px;
}

.page-home .ph-league__figure {
  margin: 0;
}

.page-home .ph-league__foot {
  margin: 24px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--gr-violet);
  font-size: 14px;
  line-height: 1.8;
  color: var(--gr-muted);
}

/* ---------- 02 数据速览 ---------- */
.page-home .ph-scale__figure {
  margin: 26px 0 0;
}

.page-home .ph-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.page-home .ph-stat {
  position: relative;
  background: linear-gradient(160deg, rgba(20, 20, 31, .95), rgba(11, 11, 16, .8));
  border-color: var(--gr-line);
}

.page-home .ph-stat .gr-stat__value {
  color: var(--gr-bright);
  font-size: clamp(40px, 6.4vw, 64px);
  line-height: 1;
}

.page-home .ph-stat__unit {
  margin-left: 6px;
  font-family: var(--gr-font-sans);
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--gr-muted);
}

.page-home .ph-stat .gr-stat__label {
  color: var(--gr-violet-soft);
  letter-spacing: .14em;
}

.page-home .ph-stat .gr-stat__foot {
  color: var(--gr-muted);
}

.page-home .ph-stat__note {
  margin: 10px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--gr-line);
  font-size: 12px;
  line-height: 1.7;
  color: var(--gr-muted);
  opacity: 1;
  transition: opacity .2s var(--gr-ease);
}

.page-home .ph-stat:focus-visible {
  outline: 2px solid var(--gr-green);
  outline-offset: 3px;
}

.page-home .ph-scale__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 03 版本入口 ---------- */
.page-home .ph-version__pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 26px;
}

.page-home .ph-vcard {
  display: flex;
  flex-direction: column;
  gap: 14px;
  border-color: var(--gr-line);
}

.page-home .ph-vcard--live {
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(108, 59, 255, .3), transparent 60%),
    linear-gradient(160deg, rgba(20, 20, 31, .96), rgba(11, 11, 16, .82));
  border-color: rgba(108, 59, 255, .5);
}

.page-home .ph-vcard--legacy {
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(240, 163, 94, .16), transparent 60%),
    linear-gradient(160deg, rgba(20, 20, 31, .96), rgba(11, 11, 16, .82));
}

.page-home .ph-vcard .gr-card__title {
  margin: 0;
  color: var(--gr-bright);
  font-weight: 450;
}

.page-home .ph-vcard__go {
  align-self: flex-start;
  margin-top: auto;
}

.page-home .ph-version__foot {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gr-muted);
}

.page-home .ph-version__foot a {
  color: var(--gr-violet-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(169, 140, 255, .45);
}

.page-home .ph-version__foot a:hover {
  color: var(--gr-bright);
}

/* ---------- 04 导出指引 ---------- */
.page-home .ph-export__panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--gr-line);
  border-radius: var(--gr-r-xl);
  padding: 28px 24px;
  background:
    radial-gradient(120% 100% at 8% 0%, rgba(0, 229, 160, .14), transparent 58%),
    linear-gradient(165deg, rgba(20, 20, 31, .96), rgba(11, 11, 16, .86));
  clip-path: polygon(0 0, 100% 3.5%, 100% 100%, 0 96.5%);
}

.page-home .ph-export__text {
  position: relative;
}

.page-home .ph-steps {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-home .ph-steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gr-text);
}

.page-home .ph-steps li .gr-mono {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--gr-green);
}

.page-home .ph-export__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-home .ph-export__figure {
  margin: 26px 0 0;
}

/* ---------- 动效 ---------- */
@keyframes ph-grid-drift {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(calc(var(--ph-grid) * -1), calc(var(--ph-grid) * -1), 0); }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .ph-hero::before { animation: none; }
  .page-home .ph-route,
  .page-home .ph-index__list li a,
  .page-home .ph-stat__note { transition: none; }
  .page-home .ph-route:hover { transform: none; }
}

/* ---------- 窄屏微调 ---------- */
@media (max-width: 479px) {
  .page-home .ph-hero { padding: 32px 0 36px; }
  .page-home .ph-hero__title { max-width: none; }
  .page-home .ph-stats { grid-template-columns: 1fr; }
  .page-home .ph-export__panel { clip-path: none; padding: 24px 18px; }
  .page-home .ph-league__tabs { padding: 16px 14px 20px; }
}

/* ---------- 平板 ---------- */
@media (min-width: 600px) {
  .page-home .ph-routes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-home .ph-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-home .ph-version__pair { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- 桌面：索引栏吸顶 + 主从分栏 ---------- */
@media (min-width: 960px) {
  .page-home .ph-index {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-home .ph-index__list {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .page-home .ph-index__list li a {
    border-radius: var(--gr-r-md);
    justify-content: flex-start;
  }

  .page-home .ph-league__stage {
    grid-template-columns: 1.35fr 1fr;
    align-items: start;
  }

  .page-home .ph-export__panel {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 32px;
    align-items: center;
    padding: 40px 36px;
  }

  .page-home .ph-export__figure { margin: 0; }
}

@media (min-width: 1200px) {
  .page-home .ph-routes { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-home .ph-body { padding-bottom: 96px; }
  .page-home .ph-data > .gr-section + .gr-section { margin-top: 56px; }
}

/* ---------- 悬停显示索引注脚（桌面）---------- */
@media (hover: hover) and (pointer: fine) {
  .page-home .ph-stat__note {
    opacity: .0;
  }
  .page-home .ph-stat:hover .ph-stat__note,
  .page-home .ph-stat:focus-within .ph-stat__note,
  .page-home .ph-stat:focus .ph-stat__note {
    opacity: 1;
  }
}