/* ==============================================================
   page-home — 首页专有样式
   ============================================================== */

.page-home {
  --ph-gap: clamp(14px, 1.8vw, 22px);
  display: block;
  background: var(--paper);
  color: var(--black);
}

/* ---------- 顶部线上行 ---------- */
.page-home .home-topline {
  padding-top: clamp(18px, 3vw, 34px);
  padding-bottom: clamp(4px, 0.8vw, 10px);
}

/* ---------- 小节标题通用件 ---------- */
.page-home .section-head {
  display: grid;
  gap: 10px;
  max-width: 64ch;
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-home .section-coord {
  font-size: 12px;
  letter-spacing: 0.18em;
  line-height: 1.6;
  color: var(--red);
}

.page-home .section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.2vw, 2.6rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.008em;
}

.page-home .section-note {
  margin: 0;
  max-width: 50ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
  opacity: 0.74;
}

/* ==============================================================
   首屏
   ============================================================== */
.page-home .hero {
  padding: clamp(22px, 4vw, 46px) 0 clamp(56px, 9vw, 112px);
}

.page-home .hero-grid {
  display: grid;
  gap: clamp(30px, 5vw, 60px);
  align-items: center;
}

.page-home .hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(18px, 3vw, 28px);
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--red);
  background: var(--paper-deep);
  border: 2px solid var(--black);
  box-shadow: 4px 4px 0 var(--red-deep);
}

.page-home .hero h1 {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5.6vw, 4rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--black);
}

.page-home .hero-lede {
  margin: 0 0 clamp(22px, 3vw, 34px);
  max-width: 42ch;
  font-size: clamp(1rem, 1.15vw, 1.08rem);
  line-height: 1.85;
  color: var(--ink);
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: clamp(26px, 4vw, 40px);
}

.page-home .hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 3vw, 38px);
  margin: 0;
  padding-top: clamp(16px, 2.6vw, 26px);
  border-top: 2px solid var(--black);
}

.page-home .hero-stats > div {
  display: grid;
  gap: 6px;
}

.page-home .hero-stats dt {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gray);
}

.page-home .hero-stats dd {
  margin: 0;
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  font-weight: 700;
  line-height: 1;
  color: var(--red);
}

.page-home .hero-visual {
  position: relative;
}

.page-home .hub-svg {
  display: block;
  width: 100%;
  max-width: 540px;
  height: auto;
  margin: 0 auto;
}

.page-home .hub-svg text {
  font-family: var(--font-mono);
}

/* ==============================================================
   四大入口
   ============================================================== */
.page-home .entries {
  position: relative;
  padding: clamp(72px, 11vw, 148px) 0 clamp(64px, 9vw, 126px);
  background: var(--ink);
  color: var(--paper);
}

.page-home .entries::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: calc(-1 * clamp(14px, 3vw, 40px));
  height: clamp(14px, 3vw, 40px);
  background: var(--ink);
  clip-path: polygon(0 100%, 100% 0, 100% 100%, 0 100%);
}

.page-home .entries .section-head h2,
.page-home .desktop .section-head h2 {
  color: var(--paper);
}

.page-home .entries .section-coord,
.page-home .desktop .section-coord,
.page-home .partner .section-coord {
  color: var(--orange);
}

.page-home .entries .section-note,
.page-home .desktop .section-note {
  color: var(--paper);
  opacity: 0.76;
}

.page-home .entries-grid {
  display: grid;
  gap: var(--ph-gap);
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.page-home .entry-teams,
.page-home .entry-events,
.page-home .entry-archive,
.page-home .entry-help {
  grid-column: 1 / -1;
}

.page-home .entry-card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--ink-mid);
  border: 2px solid var(--black);
  box-shadow: 6px 6px 0 var(--red-deep);
  color: var(--paper);
  transition: transform 200ms cubic-bezier(.2, .7, .3, 1), box-shadow 200ms cubic-bezier(.2, .7, .3, 1);
}

.page-home .entry-card:hover {
  transform: translate(-3px, -5px);
  box-shadow: 10px 13px 0 var(--red-deep);
}

.page-home .entry-card:focus-within {
  box-shadow: 10px 13px 0 var(--red-deep), 0 0 0 3px var(--gold);
}

.page-home .entry-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 12px;
  padding: clamp(22px, 2.8vw, 34px);
}

.page-home .entry-coord {
  align-self: flex-start;
  padding: 3px 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  line-height: 1.4;
  color: var(--gold);
  background: var(--black);
  border: 1px solid var(--gold);
}

.page-home .entry-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.1vw, 1.7rem);
  font-weight: 900;
  line-height: 1.22;
  color: var(--paper);
}

.page-home .entry-text {
  flex: 1;
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(244, 237, 226, 0.8);
}

.page-home .entry-link {
  align-self: flex-start;
  padding-bottom: 2px;
  font-size: 14px;
  font-weight: 700;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
  transition: color 160ms ease, border-color 160ms ease;
}

.page-home .entry-link:hover {
  color: var(--paper);
  border-color: var(--gold);
}

.page-home .entry-teams .entry-inner {
  background: linear-gradient(160deg, rgba(94, 18, 22, 0.68) 0%, rgba(13, 26, 43, 0.96) 76%);
  min-height: clamp(300px, 32vw, 400px);
}

.page-home .entry-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
}

/* ==============================================================
   数据纵深
   ============================================================== */
.page-home .scale {
  padding: clamp(56px, 9vw, 130px) 0;
  background: var(--paper);
}

.page-home .scale-grid {
  display: grid;
  gap: clamp(28px, 4vw, 54px);
  align-items: center;
}

.page-home .scale-copy .section-coord {
  display: block;
  margin-bottom: 10px;
}

.page-home .scale-copy h2 {
  margin: 0 0 clamp(14px, 2vw, 20px);
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.2vw, 2.6rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.008em;
  color: var(--black);
}

.page-home .scale-lede {
  margin: 0 0 clamp(20px, 2.6vw, 30px);
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
  opacity: 0.86;
}

.page-home .scale-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--black);
}

.page-home .scale-list li {
  display: grid;
  gap: 4px;
  padding: clamp(14px, 2vw, 20px) 0;
  border-bottom: 2px solid var(--black);
}

.page-home .scale-key {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--red);
}

.page-home .scale-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
  opacity: 0.76;
}

.page-home .scale-visual img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--black);
  box-shadow: 8px 8px 0 var(--red-deep);
}

.page-home .scale-metrics {
  display: grid;
  gap: 2px;
  margin-top: clamp(36px, 5vw, 64px);
  background: var(--black);
  border: 2px solid var(--black);
  grid-template-columns: 1fr;
}

.page-home .scale-metric {
  display: grid;
  gap: 8px;
  padding: clamp(22px, 3vw, 34px);
  background: var(--ink);
  color: var(--paper);
}

.page-home .scale-metric b {
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 4.2vw, 3rem);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-home .scale-metric span {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 237, 226, 0.72);
}

/* ==============================================================
   桌面端看板
   ============================================================== */
.page-home .desktop {
  padding: clamp(64px, 10vw, 138px) 0;
  background: var(--ink);
  color: var(--paper);
}

.page-home .desktop-grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-home .desktop-shot {
  margin: 0;
}

.page-home .desktop-shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--black);
  box-shadow: 8px 8px 0 var(--red-deep);
}

.page-home .desktop-shot figcaption {
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(244, 237, 226, 0.6);
}

.page-home .desktop-list {
  display: grid;
  gap: 0;
  margin: 0 0 clamp(22px, 3vw, 32px);
  padding: 0;
  list-style: none;
  border-top: 2px solid rgba(244, 237, 226, 0.24);
}

.page-home .desktop-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: clamp(14px, 1.8vw, 20px) 0;
  border-bottom: 2px solid rgba(244, 237, 226, 0.24);
}

.page-home .desktop-idx {
  font-size: 13px;
  font-weight: 700;
  color: var(--orange);
  padding-top: 3px;
}

.page-home .desktop-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(244, 237, 226, 0.84);
}

/* ==============================================================
   三步上手
   ============================================================== */
.page-home .start {
  padding: clamp(56px, 9vw, 130px) 0;
  background: var(--paper);
}

.page-home .start-steps {
  display: grid;
  gap: var(--ph-gap);
  margin: 0;
  padding: 0;
  list-style: none;
  grid-template-columns: 1fr;
}

.page-home .start-step {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(22px, 3vw, 34px);
  background: var(--paper-deep);
  border: 2px solid var(--black);
  box-shadow: 6px 6px 0 var(--red-deep);
  transition: transform 200ms cubic-bezier(.2, .7, .3, 1), box-shadow 200ms cubic-bezier(.2, .7, .3, 1);
}

.page-home .start-step:hover {
  transform: translate(-2px, -4px);
  box-shadow: 9px 11px 0 var(--red-deep);
}

.page-home .step-num {
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--red);
}

.page-home .start-step h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 1.6vw, 1.4rem);
  font-weight: 900;
  line-height: 1.3;
  color: var(--black);
}

.page-home .start-step p {
  flex: 1;
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
  opacity: 0.85;
}

.page-home .step-link {
  align-self: flex-start;
  font-size: 14px;
  font-weight: 700;
  color: var(--red);
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
  padding-bottom: 2px;
  transition: color 160ms ease;
}

.page-home .step-link:hover {
  color: var(--red-deep);
}

/* ==============================================================
   更新节奏
   ============================================================== */
.page-home .sync {
  padding: clamp(56px, 9vw, 130px) 0;
  background: var(--paper);
}

.page-home .sync-figure {
  margin: 0 0 clamp(28px, 4vw, 46px);
}

.page-home .sync-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--black);
  box-shadow: 8px 8px 0 var(--red-deep);
}

.page-home .sync-nodes {
  display: grid;
  gap: var(--ph-gap);
  margin: 0;
  padding: 0;
  list-style: none;
  grid-template-columns: 1fr;
}

.page-home .sync-node {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--ink);
  border: 2px solid var(--black);
  box-shadow: 6px 6px 0 var(--red-deep);
  color: var(--paper);
}

.page-home .sync-mark {
  font-size: clamp(1.5rem, 2.6vw, 2.05rem);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-home .sync-node h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--paper);
}

.page-home .sync-node p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(244, 237, 226, 0.78);
}

.page-home .sync-more {
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding-top: clamp(18px, 2.6vw, 28px);
  border-top: 2px solid var(--black);
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-home .sync-more a {
  color: var(--red);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
}

.page-home .sync-more a:hover {
  color: var(--red-deep);
}

/* ==============================================================
   合作与纠错
   ============================================================== */
.page-home .partner {
  padding: clamp(64px, 10vw, 138px) 0;
  background: var(--ink);
  color: var(--paper);
}

.page-home .partner-grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-home .partner-copy h2 {
  margin: 10px 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.2vw, 2.6rem);
  font-weight: 900;
  line-height: 1.18;
  color: var(--paper);
}

.page-home .partner-copy p {
  margin: 0 0 16px;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 237, 226, 0.82);
}

.page-home .partner-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: clamp(20px, 2.6vw, 28px) 0 clamp(20px, 2.6vw, 28px);
}

.page-home .partner-mail {
  padding: 9px 14px;
  font-size: 14px;
  color: var(--gold);
  background: var(--black);
  border: 2px solid var(--gold);
  word-break: break-all;
}

.page-home .partner-aside {
  display: grid;
  gap: 0;
  align-content: start;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid rgba(244, 237, 226, 0.24);
}

.page-home .partner-aside li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: clamp(16px, 2.2vw, 24px) 0;
  border-bottom: 2px solid rgba(244, 237, 226, 0.24);
}

.page-home .partner-aside span {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-home .partner-aside em {
  font-style: normal;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 237, 226, 0.78);
}

/* ==============================================================
   响应式与动效降级
   ============================================================== */
@media (min-width: 640px) {
  .page-home .scale-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .start-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .sync-nodes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-home .scale-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }

  .page-home .desktop-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }

  .page-home .partner-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-home .hero-grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    gap: clamp(40px, 6vw, 84px);
  }
}

@media (min-width: 760px) {
  .page-home .entry-teams {
    grid-column: span 8;
  }

  .page-home .entry-events {
    grid-column: span 4;
  }

  .page-home .entry-archive {
    grid-column: span 7;
  }

  .page-home .entry-help {
    grid-column: span 5;
  }
}

@media (max-width: 759px) {
  .page-home .entry-teams .entry-inner {
    min-height: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .entry-card,
  .page-home .start-step,
  .page-home .entry-link,
  .page-home .step-link {
    transition: none;
  }

  .page-home .entry-card:hover,
  .page-home .start-step:hover {
    transform: none;
  }
}