.page-home {
  --home-radius: 26px 26px 26px 10px;
  --home-radius-soft: 22px 22px 22px 8px;
  display: block;
  background:
    radial-gradient(120% 70% at 88% 0%, rgba(47, 243, 208, .09), transparent 62%),
    radial-gradient(90% 60% at 0% 42%, rgba(255, 90, 43, .06), transparent 60%);
  color: var(--arena-text);
}

.page-home .arena-section {
  padding-block: clamp(56px, 9vw, 124px);
}

.page-home .section-head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 4vw, 46px);
}

.page-home .arena-index {
  margin: 0 0 12px;
  font-family: var(--arena-mono);
  font-size: 13px;
  letter-spacing: .22em;
  color: var(--arena-cyan);
}

.page-home .arena-title {
  margin: 0 0 14px;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.14;
  letter-spacing: -.03em;
  font-weight: 900;
}

/* ---------- 首屏拼贴 ---------- */

.page-home .hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(22px, 4vw, 44px) clamp(40px, 7vw, 84px);
}

.page-home .hero::before {
  content: "";
  position: absolute;
  inset: -10% -5% 0;
  background-image: repeating-linear-gradient(
    102deg,
    rgba(47, 243, 208, .075) 0 1px,
    transparent 1px 28px
  );
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  pointer-events: none;
}

.page-home .hero-board {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-home .hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.page-home .hero-kicker {
  margin: 0;
  font-family: var(--arena-mono);
  font-size: 13px;
  letter-spacing: .03em;
  color: var(--arena-amber);
  background: rgba(255, 196, 107, .09);
  border: 1px solid rgba(255, 196, 107, .32);
  border-radius: 999px;
  padding: 5px 13px;
  font-variant-numeric: tabular-nums;
}

.page-home .hero-title {
  margin: 0;
  font-size: clamp(30px, 5.4vw, 58px);
  line-height: 1.06;
  letter-spacing: -.04em;
  font-weight: 900;
  max-width: 16ch;
}

.page-home .hero-lede {
  margin: 0;
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.7;
  color: var(--arena-muted);
  max-width: 34ch;
}

.page-home .hero-timer {
  position: relative;
  padding: clamp(20px, 4vw, 34px);
  border: 1px solid var(--arena-line);
  border-radius: var(--arena-radius-organic);
  background:
    linear-gradient(150deg, rgba(12, 44, 36, .96), rgba(6, 26, 21, .96)),
    repeating-linear-gradient(102deg, rgba(47, 243, 208, .08) 0 1px, transparent 1px 22px);
  overflow: hidden;
}

.page-home .hero-timer-label {
  margin: 0 0 6px;
  font-family: var(--arena-mono);
  font-size: 13px;
  letter-spacing: .2em;
  color: var(--arena-muted);
}

.page-home .hero-timer-value {
  margin: 0;
  font-family: var(--arena-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(52px, 13vw, 128px);
  line-height: .95;
  letter-spacing: -.03em;
  color: var(--arena-cyan);
  text-shadow: 0 0 44px rgba(47, 243, 208, .28);
}

.page-home .hero-timer-meta {
  margin: 14px 0 0;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--arena-muted);
}

.page-home .hero-media {
  position: relative;
  margin: 0;
  border-radius: var(--home-radius);
  overflow: hidden;
  background: var(--arena-slate-a);
  border: 1px solid var(--arena-line);
}

.page-home .hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(.92) contrast(1.05);
}

@media (min-width: 900px) {
  .page-home .hero-board {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    grid-template-areas:
      "copy copy copy copy copy copy copy media media media media media"
      "timer timer timer timer timer timer timer media media media media media";
    gap: 22px 26px;
  }

  .page-home .hero-copy { grid-area: copy; }
  .page-home .hero-timer { grid-area: timer; }
  .page-home .hero-media { grid-area: media; height: 100%; }

  .page-home .hero-media img {
    height: 100%;
    aspect-ratio: auto;
  }
}

/* ---------- 赛程轨道 ---------- */

.page-home .track-rail {
  list-style: none;
  margin: 0;
  padding: 0 0 20px;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(228px, 76%);
  gap: 14px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  scroll-padding-inline-start: 4px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--arena-quiet) transparent;
}

.page-home .track-rail::-webkit-scrollbar {
  height: 6px;
}

.page-home .track-rail::-webkit-scrollbar-thumb {
  background: var(--arena-quiet);
  border-radius: 999px;
}

.page-home .track-rail:focus-visible {
  outline: 2px solid var(--arena-cyan);
  outline-offset: 6px;
  border-radius: var(--arena-radius-sm);
}

.page-home .track-card {
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 196px;
  padding: 22px 20px 20px;
  border: 1px solid var(--arena-line);
  border-radius: var(--home-radius-soft);
  background: linear-gradient(170deg, var(--arena-panel), rgba(6, 26, 21, .9));
}

.page-home .track-card .arena-tag {
  align-self: flex-start;
  margin-top: auto;
}

.page-home .track-time {
  margin: 0;
  font-family: var(--arena-mono);
  font-variant-numeric: tabular-nums;
  font-size: 28px;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--arena-cyan-soft);
}

.page-home .track-name {
  margin: 0;
  font-size: 18px;
  line-height: 1.4;
  letter-spacing: -.01em;
}

.page-home .track-meta {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--arena-muted);
}

.page-home .track-hint {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--arena-muted);
}

@media (min-width: 760px) {
  .page-home .track-rail {
    grid-auto-columns: 268px;
    gap: 16px;
  }
}

/* ---------- 周末节奏 ---------- */

.page-home .weekend-banner {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 268px;
  border-radius: var(--arena-radius-lg) var(--arena-radius-lg) var(--arena-radius-lg) 10px;
  overflow: hidden;
  border: 1px solid var(--arena-line);
}

.page-home .weekend-banner img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-home .weekend-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(178deg, rgba(6, 26, 21, .2) 0%, rgba(6, 26, 21, .94) 78%);
}

.page-home .weekend-banner-copy {
  position: relative;
  z-index: 1;
  padding: clamp(20px, 4vw, 42px);
}

.page-home .weekend-banner-copy .arena-title {
  margin-bottom: 0;
  max-width: 20ch;
}

.page-home .weekend-steps {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-home .weekend-step {
  padding: 22px;
  border: 1px solid var(--arena-line);
  border-radius: var(--home-radius-soft);
  background: linear-gradient(160deg, rgba(12, 44, 36, .9), rgba(6, 26, 21, .78));
}

.page-home .weekend-step h3 {
  margin: 10px 0 8px;
  font-size: 19px;
  line-height: 1.4;
  letter-spacing: -.01em;
}

.page-home .weekend-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--arena-muted);
  max-width: 46ch;
}

.page-home .step-num {
  font-family: var(--arena-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: .2em;
  color: var(--arena-track);
}

@media (min-width: 820px) {
  .page-home .weekend-steps {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 18px;
  }

  .page-home .weekend-steps > li:nth-child(1) { grid-column: span 3; }
  .page-home .weekend-steps > li:nth-child(2) { grid-column: span 3; }
  .page-home .weekend-steps > li:nth-child(3) { grid-column: span 6; }
}

/* ---------- 常用入口 ---------- */

.page-home .entries {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-home .entry-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 24px;
  border: 1px solid var(--arena-line);
  border-radius: var(--home-radius-soft);
  background: linear-gradient(165deg, rgba(12, 44, 36, .92), rgba(6, 26, 21, .82));
  color: inherit;
  text-decoration: none;
  transition: border-color .3s var(--arena-ease), transform .3s var(--arena-ease);
}

.page-home .entry-card:hover,
.page-home .entry-card:focus-visible {
  border-color: var(--arena-cyan);
  transform: translateY(-3px);
}

.page-home .entry-key {
  margin: 0;
  font-family: var(--arena-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--arena-cyan);
  text-transform: uppercase;
}

.page-home .entry-card h3 {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.3;
  letter-spacing: -.02em;
}

.page-home .entry-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--arena-muted);
  max-width: 44ch;
}

.page-home .entry-go {
  margin-top: auto;
  padding-top: 8px;
  font-size: 14px;
  color: var(--arena-cyan-soft);
}

.page-home .mobile-card {
  margin: 0;
  border: 1px solid var(--arena-line);
  border-radius: var(--arena-radius-lg) var(--arena-radius-lg) 10px var(--arena-radius-lg);
  overflow: hidden;
  background: var(--arena-slate-a);
}

.page-home .mobile-card img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 380px;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  filter: saturate(.88) contrast(1.06);
}

.page-home .mobile-card figcaption {
  padding: 20px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--arena-muted);
}

.page-home .mobile-tag {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--arena-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--arena-cyan);
}

@media (min-width: 900px) {
  .page-home .entries {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 20px;
  }

  .page-home .entry--a { grid-column: 1 / span 7; }
  .page-home .entry--b { grid-column: 8 / span 5; }
  .page-home .entry--c { grid-column: 1 / span 4; }
  .page-home .mobile-card { grid-column: 5 / span 8; }
}

/* ---------- 数据看板 ---------- */

.page-home .metrics-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
}

.page-home .metrics-intro .arena-lede {
  margin-bottom: 22px;
  max-width: 44ch;
}

.page-home .metric-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-home .metric-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 14px;
  border: 1px solid var(--arena-line);
  border-radius: 18px 18px 18px 6px;
  background: rgba(12, 44, 36, .72);
}

.page-home .metric-item:nth-child(3n+2) {
  background: rgba(34, 48, 63, .62);
}

.page-home .metric-item:nth-child(5) {
  border-color: rgba(255, 90, 43, .45);
}

.page-home .metric-num {
  font-family: var(--arena-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--arena-cyan);
}

.page-home .metric-name {
  font-size: 16px;
  line-height: 1.4;
  letter-spacing: -.01em;
}

@media (min-width: 560px) {
  .page-home .metric-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-home .metrics-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

/* ---------- 专家专栏 ---------- */

.page-home .columns-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
}

.page-home .columns-media {
  margin: 0;
  border-radius: var(--arena-radius-lg) var(--arena-radius-lg) 10px var(--arena-radius-lg);
  overflow: hidden;
  border: 1px solid var(--arena-line);
}

.page-home .columns-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.9) contrast(1.04);
}

.page-home .column-list {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  border-top: 1px solid var(--arena-line);
}

.page-home .column-item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  padding: 18px 4px;
  border-bottom: 1px solid var(--arena-line);
}

.page-home .column-item h3 {
  margin: 0 0 6px;
  font-size: 18px;
  line-height: 1.4;
  letter-spacing: -.01em;
}

.page-home .column-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--arena-muted);
  max-width: 50ch;
}

.page-home .column-num {
  font-family: var(--arena-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--arena-amber);
  padding-top: 4px;
}

.page-home .columns-note {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--arena-muted);
  max-width: 52ch;
}

@media (min-width: 980px) {
  .page-home .columns-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: 56px;
  }

  .page-home .columns-media {
    position: sticky;
    top: 108px;
  }
}

/* ---------- 联系与服务 ---------- */

.page-home .contact-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--arena-line);
  border-radius: var(--arena-radius-lg) var(--arena-radius-lg) 10px var(--arena-radius-lg);
  background:
    linear-gradient(140deg, rgba(22, 33, 46, .92), rgba(6, 26, 21, .94)),
    repeating-linear-gradient(102deg, rgba(47, 243, 208, .06) 0 1px, transparent 1px 24px);
}

.page-home .contact-lead p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--arena-muted);
  max-width: 44ch;
}

.page-home .contact-rows {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-home .contact-row {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--arena-line);
}

.page-home .contact-label {
  margin: 0 0 6px;
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--arena-muted);
}

.page-home .contact-value {
  margin: 0 0 6px;
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.5;
  word-break: break-word;
}

.page-home .contact-value a {
  color: var(--arena-cyan-soft);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color .25s var(--arena-ease);
}

.page-home .contact-value a:hover,
.page-home .contact-value a:focus-visible {
  border-bottom-color: var(--arena-cyan);
}

.page-home .contact-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--arena-muted);
}

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

.page-home .contact-links a {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--arena-line);
  border-radius: 999px;
  font-size: 14px;
  color: var(--arena-text);
  text-decoration: none;
  transition: border-color .25s var(--arena-ease), color .25s var(--arena-ease);
}

.page-home .contact-links a:hover,
.page-home .contact-links a:focus-visible {
  border-color: var(--arena-cyan);
  color: var(--arena-cyan-soft);
}

@media (min-width: 860px) {
  .page-home .contact-band {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 44px;
  }

  .page-home .contact-rows {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 28px;
  }

  .page-home .contact-row:last-child {
    grid-column: span 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .entry-card,
  .page-home .contact-value a,
  .page-home .contact-links a {
    transition: none;
  }

  .page-home .entry-card:hover,
  .page-home .entry-card:focus-visible {
    transform: none;
  }
}