.page-home {
  --home-cat: var(--by-ice);
  --home-gap: clamp(20px, 3vw, 36px);
  position: relative;
  overflow-wrap: break-word;
}

/* ============ 首屏 ============ */
.page-home .home-hero {
  position: relative;
  padding: clamp(28px, 5vw, 64px) 0 0;
  isolation: isolate;
}
.page-home .home-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(127, 212, 255, .16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(127, 212, 255, .16) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 42%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, #000 42%, transparent 100%);
  pointer-events: none;
  z-index: 0;
}
.page-home .home-hero::after {
  content: "";
  position: absolute;
  top: -10%;
  right: -18%;
  width: 62vw;
  height: 62vw;
  max-width: 900px;
  max-height: 900px;
  background: radial-gradient(circle, rgba(255, 46, 139, .22) 0%, rgba(122, 92, 255, .10) 42%, transparent 68%);
  pointer-events: none;
  z-index: 0;
}
.page-home .home-hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--by-max);
  margin: 0 auto;
  padding: 0 var(--by-gutter);
}
.page-home .home-hero__eyebrow {
  margin: 0 0 clamp(18px, 3vw, 32px);
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--by-ice);
  text-transform: uppercase;
}
.page-home .home-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  padding-bottom: clamp(30px, 5vw, 60px);
  border-bottom: 1px solid var(--by-line);
}
.page-home .home-hero__title {
  margin: 0 0 .34em;
  font-family: var(--by-font-sans);
  font-weight: 900;
  font-size: clamp(42px, 9.4vw, 118px);
  line-height: .92;
  letter-spacing: -.03em;
  color: var(--by-text);
}
.page-home .home-hero__title-accent {
  color: var(--by-hot);
  text-shadow: 0 0 34px rgba(255, 46, 139, .35);
}
.page-home .home-hero__lede {
  max-width: 40em;
  margin: 0 0 clamp(22px, 3vw, 34px);
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.75;
  color: var(--by-text);
}
.page-home .home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-home .home-hero__meta {
  margin: 18px 0 0;
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--by-muted);
}
.page-home .home-hero__visual {
  position: relative;
}
.page-home .home-hero__media {
  border: 3px solid var(--by-line);
  box-shadow: var(--by-shadow-hard);
}
.page-home .home-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-home .home-hero__status {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-top: -22px;
  margin-left: 12px;
  margin-right: 12px;
  padding: 14px 16px;
  background: var(--by-surface);
  border: 3px solid var(--by-line);
  border-left: 3px solid var(--by-cyan);
  box-shadow: 8px 8px 0 rgba(3, 7, 14, .8);
  position: relative;
  z-index: 2;
}
.page-home .home-hero__status-num {
  font-family: var(--by-font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--by-cyan);
}
.page-home .home-hero__status-unit {
  font-size: 12px;
  margin-left: 4px;
  color: var(--by-muted);
}
.page-home .home-hero__status-label {
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--by-muted);
}
.page-home .by-status__dot {
  animation: home-breathe 4.6s var(--by-ease) infinite;
}
@keyframes home-breathe {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 240, 224, .55); }
  50% { opacity: .55; box-shadow: 0 0 0 7px rgba(0, 240, 224, 0); }
}
.page-home .home-hero__annotation {
  display: block;
  max-width: var(--by-max);
  margin: 22px auto 0;
  padding: 0 var(--by-gutter) 20px;
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--by-ice);
  text-align: right;
}

/* ============ 通道状态条 ============ */
.page-home .home-statusrail {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(6, 10, 18, .94);
  border-top: 1px solid var(--by-line);
  border-bottom: 1px solid var(--by-line);
}
.page-home .home-statusrail__inner {
  max-width: var(--by-max);
  margin: 0 auto;
  padding: 11px var(--by-gutter);
  display: flex;
  align-items: center;
  gap: 20px;
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none;
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: .07em;
  color: var(--by-muted);
}
.page-home .home-statusrail__inner::-webkit-scrollbar { display: none; }
.page-home .home-statusrail__lead {
  color: var(--by-cyan);
  font-weight: 700;
}
.page-home .home-statusrail__cell b {
  color: var(--by-ice);
  font-weight: 700;
}
.page-home .home-statusrail__jump {
  margin-left: auto;
  color: var(--by-hot);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid currentColor;
}
.page-home .home-statusrail__jump:hover { color: var(--by-cyan); }

/* ============ 通用章节 ============ */
.page-home .by-section {
  max-width: var(--by-max);
  margin: 0 auto;
  padding: clamp(48px, 7vw, 92px) var(--by-gutter);
}
.page-home .by-section__head {
  display: grid;
  gap: 8px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--by-line);
  margin-bottom: var(--home-gap);
}
.page-home .by-section__num {
  font-family: var(--by-font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--by-ice);
}
.page-home .by-section__title {
  margin: 0;
  font-size: clamp(24px, 3.8vw, 42px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--by-text);
}
.page-home .by-section__kicker {
  margin: 0;
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--by-muted);
}
@media (min-width: 760px) {
  .page-home .by-section__head {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 22px;
  }
}

/* ============ 01 本季更新 ============ */
.page-home .home-update__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 3px solid var(--by-line);
}
.page-home .home-update__row {
  display: grid;
  gap: 8px;
  padding: clamp(20px, 2.6vw, 30px) 0 clamp(20px, 2.6vw, 30px) clamp(16px, 2.4vw, 30px);
  border-bottom: 1px solid var(--by-line);
  position: relative;
}
.page-home .home-update__row::before {
  content: "";
  position: absolute;
  left: -3px;
  top: clamp(24px, 3vw, 38px);
  width: 3px;
  height: 22px;
  background: var(--by-cyan);
}
.page-home .home-update__row:nth-child(1)::before { background: var(--by-ice); }
.page-home .home-update__row:nth-child(2)::before { background: var(--by-hot); }
.page-home .home-update__code {
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--by-muted);
}
.page-home .home-update__h {
  margin: 0;
  font-size: clamp(18px, 2.1vw, 24px);
  font-weight: 800;
  color: var(--by-text);
  line-height: 1.3;
}
.page-home .home-update__p {
  margin: 0;
  max-width: 62em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--by-muted);
}
@media (min-width: 760px) {
  .page-home .home-update__row {
    grid-template-columns: 52px minmax(0, 1fr);
    grid-template-rows: auto auto;
    column-gap: 20px;
  }
  .page-home .home-update__code { grid-row: 1 / 3; padding-top: 6px; }
  .page-home .home-update__h { grid-column: 2; }
  .page-home .home-update__p { grid-column: 2; }
}

/* ============ 02 记录导出 ============ */
.page-home .home-export__grid {
  display: grid;
  gap: var(--home-gap);
}
.page-home .home-export__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: none;
}
.page-home .home-export__step {
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--by-surface);
  border: 3px solid var(--by-line);
  transition: border-color .3s var(--by-ease), transform .3s var(--by-ease);
}
.page-home .home-export__step:hover {
  border-color: var(--by-ice);
  transform: translateY(-3px);
}
.page-home .home-export__step-num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--by-hot);
}
.page-home .home-export__step-h {
  margin: 0 0 8px;
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 800;
  color: var(--by-text);
}
.page-home .home-export__step-p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--by-muted);
}
.page-home .home-export__media {
  border: 3px solid var(--by-line);
  box-shadow: var(--by-shadow-hard);
  align-self: start;
}
.page-home .home-export__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-home .home-export__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: clamp(20px, 3vw, 30px);
  padding: 14px 18px;
  border: 3px solid var(--by-line);
  border-left: 3px solid var(--by-cyan);
  background: rgba(14, 24, 48, .7);
}
.page-home .home-export__foot-label {
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--by-muted);
}
.page-home .home-export__foot-link {
  margin-left: auto;
  color: var(--by-ice);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}
.page-home .home-export__foot-link:hover { color: var(--by-cyan); }
@media (min-width: 900px) {
  .page-home .home-export__grid {
    grid-template-columns: 1.15fr .85fr;
    align-items: start;
  }
}

/* ============ 03 八个分类 ============ */
.page-home .home-cats__banner {
  border: 3px solid var(--by-line);
  margin-bottom: var(--home-gap);
}
.page-home .home-cats__banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-home .home-cats__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}
.page-home .home-cats__card {
  position: relative;
  padding: 22px 18px 20px;
  background: var(--by-surface);
  border: 3px solid var(--by-line);
  border-top: 3px solid var(--home-cat);
  transition: border-color .28s var(--by-ease), transform .28s var(--by-ease), box-shadow .28s var(--by-ease);
  outline: none;
}
.page-home .home-cats__card:hover,
.page-home .home-cats__card:focus-visible {
  border-color: var(--by-cyan);
  transform: translateY(-4px);
  box-shadow: 10px 10px 0 rgba(3, 7, 14, .8);
}
.page-home .home-cats__card:focus-visible {
  outline: 2px solid var(--by-cyan);
  outline-offset: 3px;
}
.page-home .home-cats__corner {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 8px;
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--by-void);
  background: var(--home-cat);
}
.page-home .home-cats__name {
  margin: 0 0 8px;
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 800;
  color: var(--by-text);
  line-height: 1.2;
}
.page-home .home-cats__count {
  margin: 0 0 8px;
  font-family: var(--by-font-mono);
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--by-muted);
}
.page-home .home-cats__count b {
  color: var(--home-cat);
  font-size: 17px;
}
.page-home .home-cats__who {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--by-text);
  opacity: .82;
}
.page-home .home-cats__card:nth-child(1) { --home-cat: var(--by-ice); }
.page-home .home-cats__card:nth-child(2) { --home-cat: var(--by-hot); }
.page-home .home-cats__card:nth-child(3) { --home-cat: var(--by-cyan); }
.page-home .home-cats__card:nth-child(4) { --home-cat: var(--by-violet); }
.page-home .home-cats__card:nth-child(5) { --home-cat: var(--by-amber); }
.page-home .home-cats__card:nth-child(6) { --home-cat: var(--by-hot); }
.page-home .home-cats__card:nth-child(7) { --home-cat: var(--by-cyan); }
.page-home .home-cats__card:nth-child(8) { --home-cat: var(--by-ice); }
@media (min-width: 640px) {
  .page-home .home-cats__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .page-home .home-cats__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    padding-bottom: 28px;
  }
  .page-home .home-cats__card:nth-child(even) { margin-top: 28px; }
}

/* ============ 04 场馆数据 ============ */
.page-home .home-scale__grid {
  display: grid;
  gap: var(--home-gap);
}
.page-home .home-scale__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.page-home .home-scale__stat {
  display: grid;
  gap: 6px;
  padding: 20px 16px;
  background: var(--by-surface);
  border: 3px solid var(--by-line);
}
.page-home .home-scale__num {
  font-family: var(--by-font-mono);
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 700;
  line-height: 1;
  color: var(--by-hot);
}
.page-home .home-scale__unit {
  font-size: 13px;
  font-weight: 700;
  color: var(--by-text);
}
.page-home .home-scale__desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--by-muted);
}
.page-home .home-scale__media {
  border: 3px solid var(--by-line);
  box-shadow: var(--by-shadow-hard);
}
.page-home .home-scale__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-home .home-scale__note {
  margin: var(--home-gap) 0 0;
  max-width: 74em;
  padding-left: 18px;
  border-left: 3px solid var(--by-violet);
  font-size: 15px;
  line-height: 1.8;
  color: var(--by-muted);
}
.page-home .home-scale__link {
  color: var(--by-ice);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
  white-space: nowrap;
}
.page-home .home-scale__link:hover { color: var(--by-cyan); }
@media (min-width: 900px) {
  .page-home .home-scale__grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

/* ============ 05 帮助入口 ============ */
.page-home .home-help__grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}
.page-home .home-help__card {
  display: grid;
  gap: 12px;
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--by-surface);
  border: 3px solid var(--by-line);
  text-decoration: none;
  transition: border-color .28s var(--by-ease), transform .28s var(--by-ease);
}
.page-home .home-help__card:hover,
.page-home .home-help__card:focus-visible {
  border-color: var(--by-cyan);
  transform: translateY(-4px);
  outline: none;
}
.page-home .home-help__card:focus-visible {
  outline: 2px solid var(--by-cyan);
  outline-offset: 3px;
}
.page-home .home-help__card .by-tag { justify-self: start; }
.page-home .home-help__h {
  margin: 0;
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 800;
  color: var(--by-text);
}
.page-home .home-help__p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--by-muted);
}
.page-home .home-help__go {
  margin-top: 4px;
  font-family: var(--by-font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--by-hot);
}
@media (min-width: 860px) {
  .page-home .home-help__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ============ 结尾行动区 ============ */
.page-home .home-cta {
  position: relative;
  margin-top: clamp(24px, 4vw, 48px);
  padding: clamp(48px, 7vw, 96px) 0;
  background:
    linear-gradient(115deg, rgba(255, 46, 139, .16) 0%, rgba(122, 92, 255, .12) 40%, transparent 72%),
    var(--by-surface);
  border-top: 3px solid var(--by-line);
  border-bottom: 3px solid var(--by-line);
  overflow: hidden;
}
.page-home .home-cta::after {
  content: "";
  position: absolute;
  left: -10%;
  right: -10%;
  top: 34%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--by-cyan), var(--by-hot), transparent);
  opacity: .8;
  transform: rotate(-4deg);
  pointer-events: none;
}
.page-home .home-cta__inner {
  position: relative;
  z-index: 1;
  max-width: var(--by-max);
  margin: 0 auto;
  padding: 0 var(--by-gutter);
}
.page-home .home-cta__kicker {
  margin: 0 0 14px;
  font-family: var(--by-font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--by-cyan);
}
.page-home .home-cta__title {
  margin: 0 0 16px;
  font-size: clamp(30px, 5.4vw, 68px);
  font-weight: 900;
  line-height: .98;
  letter-spacing: -.025em;
  color: var(--by-text);
}
.page-home .home-cta__text {
  margin: 0 0 clamp(22px, 3vw, 32px);
  max-width: 40em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--by-muted);
}
.page-home .home-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ============ 减弱动效 ============ */
@media (prefers-reduced-motion: reduce) {
  .page-home .by-status__dot { animation: none; }
  .page-home .home-cats__card,
  .page-home .home-export__step,
  .page-home .home-help__card {
    transition: none;
  }
  .page-home .home-cats__card:hover,
  .page-home .home-cats__card:focus-visible,
  .page-home .home-export__step:hover,
  .page-home .home-help__card:hover,
  .page-home .home-help__card:focus-visible {
    transform: none;
  }
}