.page-home {
  position: relative;
  display: block;
  background: var(--bg);
  color: var(--text);
  overflow-x: clip;
}

/* ---------- 右侧章节跟随目录 ---------- */
.page-home .page-home__toc {
  display: none;
}

@media (min-width: 1400px) {
  .page-home .page-home__toc {
    display: block;
    position: fixed;
    top: 50%;
    right: max(24px, calc((100vw - 1180px) / 2 - 168px));
    transform: translateY(-50%);
    width: 132px;
    z-index: 30;
    padding: 14px 12px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(12, 20, 36, 0.72);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    text-align: left;
  }

  .page-home .page-home__toc .toc__title {
    margin: 0 0 10px;
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--muted);
  }

  .page-home .page-home__toc nav {
    display: grid;
    gap: 2px;
  }

  .page-home .page-home__toc .toc__link {
    display: block;
    padding: 6px 8px;
    font-size: 12.5px;
    color: var(--muted);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: color 0.24s var(--ease), border-color 0.24s var(--ease), background 0.24s var(--ease);
  }

  .page-home .page-home__toc .toc__link:hover {
    color: var(--text);
    background: rgba(58, 240, 220, 0.06);
  }

  .page-home .page-home__toc .toc__link.is-active {
    color: var(--cyan);
    border-left-color: var(--cyan);
    background: rgba(58, 240, 220, 0.08);
  }
}

/* ---------- 刊头声明区 ---------- */
.page-home .hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(48px, 10vw, 96px) 0 clamp(96px, 14vw, 168px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 56px), 0 100%);
}

.page-home .hero__bg {
  position: absolute;
  inset: 0;
  z-index: -3;
}

.page-home .hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 32%;
  opacity: 0.5;
}

.page-home .hero__veil {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(58% 52% at 16% 18%, rgba(58, 240, 220, 0.18), transparent 70%),
    radial-gradient(52% 56% at 84% 26%, rgba(139, 92, 255, 0.2), transparent 72%),
    linear-gradient(180deg, rgba(5, 7, 15, 0.7) 0%, rgba(5, 7, 15, 0.9) 58%, #05070f 100%);
  animation: home-breathe 8s ease-in-out infinite;
}

@keyframes home-breathe {
  0%, 100% { opacity: 0.88; }
  50% { opacity: 1; }
}

.page-home .hero__inner {
  position: relative;
  display: grid;
  gap: clamp(32px, 6vw, 56px);
  align-items: start;
}

.page-home .hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 20px;
  padding: 6px 14px 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(12, 20, 36, 0.66);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-home .hero__kicker .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(58, 240, 220, 0.8);
}

.page-home .hero__title {
  margin: 0 0 22px;
  font-family: var(--sans);
  font-size: clamp(2.3rem, 7.4vw, 4.5rem);
  line-height: 1.06;
  letter-spacing: -0.015em;
  font-weight: 200;
  color: var(--text);
}

.page-home .hero__title-thin {
  font-weight: 200;
}

.page-home .hero__title-bold {
  display: inline-block;
  font-weight: 900;
  background: linear-gradient(102deg, var(--cyan) 6%, var(--violet) 82%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-right: 0.06em;
}

.page-home .hero__lead {
  max-width: 32em;
  margin: 0 0 28px;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-home .hero__board {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.page-home .hero__board-cap {
  margin: 0 0 6px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  text-transform: uppercase;
}

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

.page-home .board__item a {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num name"
    "num desc";
  gap: 2px 14px;
  padding: 13px 10px 13px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  transition: padding-left 0.24s var(--ease), background 0.24s var(--ease);
}

.page-home .board__item a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(58, 240, 220, 0));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.24s var(--ease);
}

.page-home .board__item a:hover,
.page-home .board__item a:focus-visible {
  padding-left: 14px;
  background: rgba(58, 240, 220, 0.04);
  outline: none;
}

.page-home .board__item a:hover::before,
.page-home .board__item a:focus-visible::before {
  transform: scaleY(1);
}

.page-home .board__num {
  grid-area: num;
  padding-top: 4px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-home .board__name {
  grid-area: name;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text);
}

.page-home .board__desc {
  grid-area: desc;
  font-size: 13px;
  line-height: 1.55;
  color: var(--muted);
}

.page-home .hero__rule-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding: 10px 18px;
  border: 1px solid rgba(255, 179, 71, 0.45);
  border-radius: 999px;
  background: rgba(255, 179, 71, 0.07);
  font-size: 13.5px;
  color: var(--gold);
  text-decoration: none;
  transition: background 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-home .hero__rule-link:hover,
.page-home .hero__rule-link:focus-visible {
  background: rgba(255, 179, 71, 0.16);
  border-color: var(--gold);
  outline: none;
}

/* ---------- 通用章节标题 ---------- */
.page-home .sec-head {
  max-width: 46ch;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-home .sec-head__kicker {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-home .sec-head__title {
  margin: 0 0 14px;
  font-size: clamp(1.55rem, 3.6vw, 2.4rem);
  line-height: 1.24;
  font-weight: 800;
  letter-spacing: -0.012em;
  color: var(--text);
}

.page-home .sec-head__lead {
  margin: 0;
  max-width: 34em;
  font-size: 0.97rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 活动规则入口 ---------- */
.page-home .act {
  position: relative;
  padding: clamp(56px, 9vw, 104px) 0;
  background:
    radial-gradient(70% 80% at 88% 10%, rgba(255, 179, 71, 0.07), transparent 66%),
    linear-gradient(180deg, #05070f 0%, #070a14 50%, #05070f 100%);
}

.page-home .act__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-home .rank-rail {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 14px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-home .rank-rail > * {
  flex: 0 0 min(272px, 78vw);
  scroll-snap-align: start;
}

.page-home .rank {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 22px;
  border-radius: var(--radius);
}

.page-home .rank .card__label {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-home .rank__idx {
  margin: 0;
  font-family: var(--mono);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text);
  line-height: 1;
}

.page-home .rank.card--gold .rank__idx { color: var(--gold); }
.page-home .rank.card--cyan .rank__idx { color: var(--cyan); }
.page-home .rank.card--violet .rank__idx { color: var(--violet); }

.page-home .rank .card__title {
  margin: 4px 0 0;
  font-size: 1.05rem;
  font-weight: 700;
}

.page-home .rank .card__body {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--muted);
}

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

.page-home .act__figure .media-frame img {
  border-radius: var(--radius);
}

/* ---------- 首次进站流程 ---------- */
.page-home .flow-sec {
  padding: clamp(56px, 9vw, 104px) 0;
  position: relative;
}

.page-home .flow-sec::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line) 22%, var(--line) 78%, transparent);
}

.page-home .flow__wrap {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
}

.page-home .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: flow;
}

.page-home .flow__item {
  position: relative;
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 4px 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.page-home .flow__item:first-child {
  border-top: 1px solid var(--line);
}

.page-home .flow__num {
  grid-column: 1;
  padding-top: 3px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-home .flow__body {
  grid-column: 2;
}

.page-home .flow__name {
  margin: 0 0 6px;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text);
}

.page-home .flow__body > p {
  margin: 0 0 10px;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--muted);
  max-width: 34em;
}

.page-home .flow__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

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

.page-home .flow__figure .media-frame img {
  border-radius: var(--radius);
}

/* ---------- 版本脉络 ---------- */
.page-home .eras-sec {
  padding: clamp(56px, 9vw, 104px) 0 clamp(48px, 8vw, 88px);
  background:
    radial-gradient(60% 60% at 12% 6%, rgba(139, 92, 255, 0.12), transparent 68%),
    linear-gradient(180deg, #05070f, #070a16 42%, #05070f);
}

.page-home .eras__wrap {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-home .eras {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--cyan), var(--violet) 70%, transparent) 1;
}

.page-home .eras__item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 4px 18px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-home .eras__idx {
  grid-column: 1;
  padding-top: 4px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--violet);
}

.page-home .eras__name {
  grid-column: 2;
  margin: 0;
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--text);
}

.page-home .eras__desc {
  grid-column: 2;
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--muted);
  max-width: 34em;
}

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

.page-home .eras__figure .media-frame img {
  border-radius: var(--radius);
}

.page-home .rhythm {
  margin-top: clamp(28px, 4vw, 44px);
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(12, 20, 36, 0.62);
}

.page-home .rhythm__label {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-home .rhythm__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-home .rhythm__list li {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 14px;
  align-items: baseline;
  font-size: 0.93rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-home .rhythm__num {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

/* ---------- 联络与备案 ---------- */
.page-home .tail {
  padding: clamp(48px, 8vw, 88px) 0 clamp(64px, 10vw, 120px);
}

.page-home .tail__cols {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-home .tail__col {
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(12, 20, 36, 0.6);
}

.page-home .tail__cap {
  margin: 0 0 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-home .tail__text {
  margin: 0 0 16px;
  font-size: 0.93rem;
  line-height: 1.78;
  color: var(--muted);
  max-width: 32em;
}

.page-home .tail__text a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(58, 240, 220, 0.35);
  transition: border-color 0.2s var(--ease);
}

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

.page-home .tail__icp {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

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

.page-home .tail .contact-item {
  display: grid;
  gap: 5px;
}

.page-home .tail .contact-item__label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-home .tail .contact-item__value {
  font-size: 0.93rem;
  line-height: 1.7;
  color: var(--text);
  word-break: break-word;
}

.page-home .tail .contact-item__value--mono {
  font-family: var(--mono);
  font-size: 0.87rem;
  letter-spacing: 0.03em;
}

.page-home .tail .contact-item--note .contact-item__value {
  font-size: 0.85rem;
  color: var(--muted);
  padding-left: 12px;
  border-left: 2px solid rgba(255, 108, 147, 0.5);
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 960px) {
  .page-home .hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(40px, 5vw, 76px);
  }

  .page-home .act__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-home .flow__wrap {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-home .eras__wrap {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-home .tail__cols {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-home .rank-rail {
    flex-wrap: wrap;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-home .rank-rail > * {
    flex: 0 0 calc(50% - 8px);
  }
}

@media (min-width: 1180px) {
  .page-home .rank-rail > * {
    flex: 0 0 calc(33.333% - 11px);
  }
}

@media (max-width: 599px) {
  .page-home .hero {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), 0 100%);
  }

  .page-home .flow__item,
  .page-home .eras__item {
    grid-template-columns: 44px 1fr;
    gap: 4px 12px;
  }

  .page-home .rhythm__list li {
    grid-template-columns: 58px 1fr;
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .hero__veil {
    animation: none;
  }

  .page-home .board__item a,
  .page-home .board__item a::before,
  .page-home .hero__rule-link {
    transition: none;
  }
}
</main>