/* ================= page: home ================= */

.page-home {
  --home-rule: 1px solid var(--grid-line);
  --home-lift-1: 16px;
  --home-lift-2: 32px;
  --home-lift-3: 48px;
  --home-block: clamp(56px, 8vw, 104px);
  display: block;
  background: var(--pearl);
}

.page-home .breadcrumb {
  padding-top: clamp(16px, 2.5vw, 28px);
}

/* ---------- 首屏 ---------- */

.page-home .home-hero {
  position: relative;
  padding-bottom: var(--home-block);
  background: var(--pearl);
}

.page-home .home-hero__threshold {
  display: block;
  height: 2px;
  background: var(--ink-abyss);
  margin: clamp(16px, 3vw, 32px) 0 clamp(28px, 5vw, 56px);
  transform: scaleX(0);
  transform-origin: 50% 50%;
  animation: home-threshold-open 700ms cubic-bezier(0.22, 0.61, 0.36, 1) 80ms forwards;
}

@keyframes home-threshold-open {
  to { transform: scaleX(1); }
}

.page-home .home-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: end;
}

.page-home .home-hero__lead {
  min-width: 0;
}

.page-home .home-hero__lead .eyebrow {
  margin: 0 0 12px;
  color: var(--sea-mid);
}

.page-home .home-hero__title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(2.2rem, 5vw, 4.1rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--ink-abyss);
  max-width: 18ch;
}

.page-home .home-hero__gap {
  height: clamp(24px, 5vw, 64px);
}

.page-home .home-hero__intro {
  margin: 0;
  font-size: 17px;
  line-height: 1.75;
  color: var(--slate);
  max-width: var(--prose-max);
}

.page-home .home-hero__hint {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--coral-entry);
  font-size: 15px;
  line-height: 1.7;
  color: var(--sea-mid);
  max-width: 32rem;
}

.page-home .home-hero__media {
  margin: 0;
  min-width: 0;
}

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

/* ---------- 四条入口 ---------- */

.page-home .home-entries {
  list-style: none;
  margin: clamp(40px, 6vw, 72px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-home .home-entry {
  min-width: 0;
}

.page-home .home-entry > a {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 172px;
  padding: 22px 20px 26px;
  border: 1px solid var(--grid-line);
  background: var(--pearl);
  color: var(--ink-abyss);
  text-decoration: none;
  transition: border-color 180ms ease, background-color 180ms ease;
}

.page-home .home-entry > a::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 16px;
  height: 2px;
  background: var(--coral-entry);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 220ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

.page-home .home-entry > a:hover,
.page-home .home-entry > a:focus-visible {
  border-color: var(--coral-entry);
}

.page-home .home-entry > a:hover::after,
.page-home .home-entry > a:focus-visible::after {
  transform: scaleX(1);
}

.page-home .home-entry__no {
  color: var(--coral-text);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-home .home-entry__name {
  display: block;
  font-size: clamp(1.25rem, 2.4vw, 1.6rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.page-home .home-entry__desc {
  display: block;
  font-size: 15px;
  line-height: 1.65;
  color: var(--slate);
}

/* ---------- 首屏数据带 ---------- */

.page-home .home-facts {
  list-style: none;
  margin: clamp(40px, 6vw, 72px) 0 0;
  padding: 20px 0 0;
  border-top: var(--home-rule);
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-home .home-facts__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-home .home-facts__num {
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 600;
  line-height: 1.15;
  color: var(--ink-abyss);
}

.page-home .home-facts__label {
  font-size: 14px;
  line-height: 1.55;
  color: var(--sea-mid);
}

/* ---------- 栏目总览 ---------- */

.page-home .home-index {
  background: var(--mist);
}

.page-home .home-index .section__note {
  color: var(--sea-mid);
}

.page-home .home-index__figure {
  margin: clamp(24px, 3.5vw, 40px) 0 clamp(24px, 3.5vw, 36px);
}

.page-home .home-index__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1400 / 820;
  object-fit: cover;
}

.page-home .home-index .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.page-home .home-cols {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-home .home-col {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 18px;
  background: var(--pearl);
  border: 1px solid var(--grid-line);
  transition: border-color 180ms ease;
}

.page-home .home-col:hover,
.page-home .home-col:focus-within {
  border-color: var(--coral-entry);
}

.page-home .home-col .card__meta {
  margin: 0;
  font-size: 13px;
  color: var(--sea-mid);
  letter-spacing: 0.04em;
}

.page-home .home-col__name {
  margin: 0;
  padding-left: 10px;
  border-left: 2px solid var(--sea-mid);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--ink-abyss);
}

.page-home .home-col__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--slate);
  min-height: 3.3em;
}

.page-home .home-index .empty-note {
  margin: 20px 0 0;
}

.page-home .home-index__more,
.page-home .home-reports__more,
.page-home .home-reading__more,
.page-home .home-contact__more {
  margin: clamp(28px, 4vw, 44px) 0 0;
}

/* ---------- 版本动态 ---------- */

.page-home .home-reports {
  background: var(--ink-abyss);
  color: var(--pearl);
}

.page-home .home-reports .section__title {
  color: var(--pearl);
}

.page-home .home-reports .section__note {
  color: #9DB4C6;
}

.page-home .home-reports__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
  margin-top: clamp(24px, 3.5vw, 40px);
}

.page-home .home-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
  border-left: 1px solid rgba(201, 211, 220, 0.34);
  display: grid;
  gap: 26px;
}

.page-home .home-timeline .timeline__item {
  position: relative;
  padding-left: 0;
}

.page-home .home-timeline .timeline__item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 8px;
  width: 9px;
  height: 9px;
  background: rgba(201, 211, 220, 0.5);
  transition: background-color 400ms ease;
}

.page-home .home-timeline .timeline__item.is-lit::before {
  background: var(--coral-entry);
}

.page-home .home-timeline .timeline__time {
  margin: 0 0 6px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--electric-teal);
}

.page-home .home-timeline__title {
  margin: 0 0 6px;
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--pearl);
}

.page-home .home-timeline__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: #B7C7D4;
  max-width: var(--prose-max);
}

.page-home .home-reports__figure {
  margin: 0;
  opacity: 0.9;
}

.page-home .home-reports__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-home .home-reports .btn--quiet {
  border-color: rgba(201, 211, 220, 0.5);
  color: var(--pearl);
}

.page-home .home-reports .btn--quiet:hover,
.page-home .home-reports .btn--quiet:focus-visible {
  border-color: var(--coral-entry);
  color: var(--pearl);
}

/* ---------- 阅读方式 ---------- */

.page-home .home-reading {
  background: var(--pearl);
}

.page-home .home-reading__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
  margin-top: clamp(24px, 3.5vw, 40px);
}

.page-home .home-reading__figure {
  margin: 0;
  min-width: 0;
}

.page-home .home-reading__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-home .home-reading__list {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: var(--home-rule);
}

.page-home .home-reading__item {
  padding: 16px 0;
  border-bottom: var(--home-rule);
}

.page-home .home-reading__item dt {
  margin: 0 0 4px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-abyss);
}

.page-home .home-reading__item dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 三步路径 ---------- */

.page-home .home-steps {
  background: var(--mist);
}

.page-home .home-steps__list {
  list-style: none;
  margin: clamp(24px, 3.5vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  counter-reset: home-step;
}

.page-home .home-steps__item {
  position: relative;
  padding: 24px 20px 26px;
  background: var(--pearl);
  border: 1px solid var(--grid-line);
  border-top: 3px solid var(--ink-deep);
  min-width: 0;
}

.page-home .home-steps__item:nth-child(2) {
  border-top-color: var(--sea-mid);
}

.page-home .home-steps__item:nth-child(3) {
  border-top-color: var(--coral-entry);
}

.page-home .home-steps__no {
  display: block;
  margin-bottom: 10px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--sea-mid);
}

.page-home .home-steps__title {
  margin: 0 0 8px;
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink-abyss);
}

.page-home .home-steps__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 服务与联系 ---------- */

.page-home .home-contact {
  background: var(--pearl);
}

.page-home .home-contact__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  padding: clamp(26px, 4vw, 44px);
  background: var(--mist);
  border-left: 4px solid var(--ink-abyss);
}

.page-home .home-contact__lead .eyebrow {
  margin: 0 0 10px;
  color: var(--coral-text);
}

.page-home .home-contact__title {
  margin: 0 0 14px;
}

.page-home .home-contact__desc {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--slate);
  max-width: var(--prose-max);
}

.page-home .home-contact__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--home-rule);
}

.page-home .home-contact__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 0;
  border-bottom: var(--home-rule);
  min-width: 0;
}

.page-home .home-contact__label {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--sea-mid);
}

.page-home .home-contact__value {
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--ink-abyss);
  word-break: break-word;
}

.page-home a.home-contact__value {
  text-decoration: underline;
  text-decoration-color: var(--electric-teal);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

/* ---------- 窄屏与中屏 ---------- */

@media (min-width: 600px) {
  .page-home .home-entries {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .home-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 24px;
  }

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

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

  .page-home .home-steps__item:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-home .home-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }

  .page-home .home-reports__body {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  }

  .page-home .home-reading__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  }

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

@media (min-width: 1024px) {
  .page-home .home-entries {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .home-entry:nth-child(2) {
    margin-top: var(--home-lift-1);
  }

  .page-home .home-entry:nth-child(3) {
    margin-top: var(--home-lift-2);
  }

  .page-home .home-entry:nth-child(4) {
    margin-top: var(--home-lift-3);
  }

  .page-home .home-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-home .home-cols .home-col:nth-child(3n + 2) {
    transform: translateY(12px);
  }

  .page-home .home-cols {
    padding-bottom: 12px;
  }

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

  .page-home .home-steps__item:first-child {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .home-hero__threshold {
    transform: scaleX(1);
    animation: none;
  }

  .page-home .home-entry > a,
  .page-home .home-entry > a::after,
  .page-home .home-col,
  .page-home .home-timeline .timeline__item::before {
    transition: none;
  }

  .page-home .home-cols .home-col:nth-child(3n + 2) {
    transform: none;
  }
}