.page-home {
  --home-cut: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
  --home-cut-sm: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  --home-gap: clamp(56px, 9vw, 112px);
  background: var(--bone);
  color: var(--ink);
}

.page-home .chapter {
  position: relative;
  display: inline-block;
  padding-left: 36px;
  margin-bottom: 14px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--clay);
}

.page-home .chapter::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: 0.65;
}

.page-home .sec-title {
  margin: 0 0 clamp(14px, 2vw, 20px);
  font-size: clamp(1.6rem, 3.8vw, 2.7rem);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.015em;
  max-width: 24ch;
}

/* ---------- 封面首屏 ---------- */

.page-home .cover {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 64px) 0 clamp(48px, 8vw, 92px);
  background: var(--night);
  color: var(--bone);
}

.page-home .cover::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: linear-gradient(
    to bottom,
    var(--red) 0 20%,
    var(--yellow) 20% 40%,
    var(--green) 40% 60%,
    var(--blue) 60% 80%,
    var(--bone) 80% 100%
  );
  opacity: 0.9;
}

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

.page-home .cover__meta {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: clamp(12px, 2vw, 20px);
}

.page-home .cover__chapter {
  font-size: clamp(2rem, 6vw, 3.8rem);
  font-weight: 200;
  line-height: 1;
  letter-spacing: 0.02em;
  color: rgba(232, 241, 248, 0.26);
}

.page-home .cover .eyebrow,
.page-home .cover__eyebrow {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: rgba(232, 241, 248, 0.72);
}

.page-home .cover__title {
  margin: 0 0 clamp(16px, 3vw, 26px);
  font-size: clamp(2.5rem, 8vw, 5.6rem);
  line-height: 1;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.page-home .cover__title span {
  display: block;
  color: rgba(247, 244, 236, 0.56);
}

.page-home .cover__lead {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(0.95rem, 1.7vw, 1.06rem);
  line-height: 1.8;
  color: rgba(247, 244, 236, 0.86);
}

.page-home .cover__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-home .cover__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(10px, 2vw, 24px);
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding-top: clamp(16px, 3vw, 26px);
  border-top: 1px solid rgba(232, 241, 248, 0.2);
}

.page-home .cover__fact dt {
  margin-bottom: 6px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(232, 241, 248, 0.62);
}

.page-home .cover__fact dd {
  margin: 0;
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  font-weight: 700;
  color: var(--bone);
}

.page-home .cover__figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  clip-path: var(--home-cut);
  background: var(--plateau);
}

.page-home .cover__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.page-home .cover__cap {
  position: absolute;
  right: 14px;
  bottom: 12px;
  padding: 4px 10px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--bone);
  background: rgba(14, 42, 71, 0.72);
}

/* ---------- 中段赛事切换面板 ---------- */

.page-home .panel {
  padding: var(--home-gap) 0;
  background: var(--bone);
}

.page-home .panel__head {
  max-width: 62ch;
}

.page-home .panel__lead,
.page-home .ladder__lead,
.page-home .rounds__lead,
.page-home .archive__body p,
.page-home .reach__body p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--stone);
}

.page-home .board {
  position: relative;
  overflow: hidden;
  margin-top: clamp(26px, 4vw, 44px);
  clip-path: var(--home-cut);
  background: var(--plateau);
  color: var(--bone);
}

.page-home .board__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.24;
  pointer-events: none;
}

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

.page-home .board__tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  -webkit-overflow-scrolling: touch;
}

.page-home .board__tab {
  flex: 0 0 auto;
  padding: 9px 18px;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  color: rgba(247, 244, 236, 0.8);
  background: rgba(232, 241, 248, 0.08);
  border: 1px solid rgba(232, 241, 248, 0.22);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-home .board__tab:hover {
  background: rgba(232, 241, 248, 0.16);
}

.page-home .board__tab[aria-selected="true"] {
  background: var(--bone);
  border-color: var(--bone);
  color: var(--night);
}

.page-home .board__panels {
  margin-top: clamp(14px, 2vw, 20px);
}

.page-home .fixture {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.page-home .fixture__row {
  display: grid;
  gap: 6px 14px;
  grid-template-columns: minmax(0, 1fr);
  padding: 14px 16px;
  background: rgba(14, 42, 71, 0.58);
  border-left: 3px solid var(--clay);
}

.page-home .fixture__round {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--clay);
}

.page-home .fixture__time {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--yellow);
}

.page-home .fixture__desc {
  font-size: 0.92rem;
  line-height: 1.6;
  color: rgba(247, 244, 236, 0.9);
}

.page-home .board__note {
  margin: clamp(16px, 2vw, 22px) 0 0;
  padding-top: 14px;
  border-top: 1px dashed rgba(232, 241, 248, 0.24);
  font-size: 0.82rem;
  line-height: 1.7;
  color: rgba(247, 244, 236, 0.66);
}

/* ---------- 阶梯赛程 ---------- */

.page-home .ladder {
  padding: var(--home-gap) 0;
  background: var(--paper);
}

.page-home .ladder__head {
  max-width: 60ch;
}

.page-home .ladder__body {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(26px, 4vw, 46px);
}

.page-home .ladder__figure {
  margin: 0;
  overflow: hidden;
  clip-path: var(--home-cut);
  background: var(--sky);
}

.page-home .ladder__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

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

.page-home .step {
  position: relative;
  padding: clamp(18px, 3vw, 26px);
  clip-path: var(--home-cut-sm);
  background: #fff;
  border-left: 3px solid var(--line-strong);
}

.page-home .step--sky {
  background: var(--sky);
  border-left-color: var(--blue);
}

.page-home .step--night {
  background: var(--night);
  border-left-color: var(--yellow);
  color: var(--bone);
}

.page-home .step__num {
  display: block;
  margin-bottom: 8px;
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  font-weight: 200;
  line-height: 1;
  color: var(--clay);
}

.page-home .step--night .step__num {
  color: var(--yellow);
}

.page-home .step__title {
  margin: 0 0 8px;
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  font-weight: 700;
}

.page-home .step p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--stone);
}

.page-home .step--night p {
  color: rgba(247, 244, 236, 0.8);
}

.page-home .step__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 14px 0 0;
  padding: 0;
}

/* ---------- 轮次积分 ---------- */

.page-home .rounds {
  padding: var(--home-gap) 0;
  background: var(--sky);
}

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

.page-home .rounds__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-home .rounds__side {
  display: grid;
  gap: clamp(16px, 3vw, 24px);
  align-content: start;
}

.page-home .rounds__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(27, 31, 35, 0.14);
  clip-path: var(--home-cut-sm);
}

.page-home .stat {
  padding: clamp(14px, 2.6vw, 24px);
  background: var(--paper);
}

.page-home .stat__num {
  font-size: clamp(1.5rem, 3.6vw, 2.1rem);
  font-weight: 700;
  line-height: 1;
  color: var(--night);
}

.page-home .stat__unit {
  margin-left: 4px;
  font-size: 0.78rem;
  color: var(--clay);
}

.page-home .stat__label {
  margin: 8px 0 0;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--stone);
}

.page-home .rounds__strip {
  padding: clamp(14px, 2.4vw, 20px);
  background: var(--plateau);
  color: var(--bone);
  clip-path: var(--home-cut-sm);
}

.page-home .rounds__strip-label {
  display: block;
  margin-bottom: 10px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(247, 244, 236, 0.6);
}

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

.page-home .roundlist__item {
  padding: 6px 12px;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: rgba(247, 244, 236, 0.82);
  border: 1px solid rgba(232, 241, 248, 0.26);
  border-radius: 999px;
}

.page-home .roundlist__item--now {
  color: var(--night);
  background: var(--yellow);
  border-color: var(--yellow);
  font-weight: 600;
}

/* ---------- 帮助文档入口 ---------- */

.page-home .archive {
  padding: var(--home-gap) 0;
  background: var(--bone);
}

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

.page-home .archive__figure {
  margin: 0;
  overflow: hidden;
  clip-path: var(--home-cut);
  background: var(--sky);
}

.page-home .archive__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-home .archive__list {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: clamp(18px, 3vw, 26px) 0;
  padding: 0;
}

.page-home .archive__list li {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--ink);
}

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

.page-home .archive__index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--bone);
  background: var(--moss);
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}

/* ---------- 服务联络 ---------- */

.page-home .reach {
  padding: var(--home-gap) 0;
  background: var(--night);
  color: var(--bone);
}

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

.page-home .reach .sec-title {
  color: var(--bone);
}

.page-home .reach__body p {
  color: rgba(247, 244, 236, 0.8);
  max-width: 48ch;
}

.page-home .reach__body .btn {
  margin-top: clamp(18px, 3vw, 26px);
}

.page-home .reach__card {
  padding: clamp(20px, 3.4vw, 32px);
  background: rgba(232, 241, 248, 0.07);
  border: 1px solid rgba(232, 241, 248, 0.18);
  clip-path: var(--home-cut);
}

.page-home .reach__row {
  display: grid;
  gap: 4px;
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid rgba(232, 241, 248, 0.14);
}

.page-home .reach__row:last-of-type {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.page-home .reach__label {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(232, 241, 248, 0.58);
}

.page-home .reach__value {
  font-size: clamp(0.95rem, 2vw, 1.05rem);
  font-weight: 600;
  color: var(--bone);
  word-break: break-word;
}

.page-home .reach__icp {
  margin: clamp(18px, 3vw, 24px) 0 0;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: rgba(232, 241, 248, 0.5);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-home .fixture__row {
    grid-template-columns: 92px 84px minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-home .step:nth-child(2) {
    margin-left: 5%;
  }

  .page-home .step:nth-child(3) {
    margin-left: 10%;
  }

  .page-home .step:nth-child(4) {
    margin-left: 15%;
  }
}

@media (min-width: 900px) {
  .page-home .cover__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: end;
  }

  .page-home .ladder__body {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-home .ladder__figure {
    position: sticky;
    top: calc(var(--header-offset) + 12px);
  }

  .page-home .rounds__inner {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-home .rounds__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .archive__inner {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: center;
  }

  .page-home .reach__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }
}

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