/* =========================================================
   page-home – 首页专属样式
   作用域限定 .page-home，避免污染共享组件
   移动端优先，桌面增强
   ========================================================= */
.page-home {
  --bg-grid-color: rgba(178, 34, 34, 0.04);
  --bg-line-color: rgba(212, 212, 212, 0.35);
  --countdown-size: clamp(5rem, 18vw, 12rem);
  --card-shadow: 0 4px 20px var(--color-shadow);
  --track-curve-color: var(--color-secondary-1);
}

/* ---------- 面包屑 + 标题区 ---------- */
.page-home .breadcrumb {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--sp-md) var(--sp-lg) 0;
  font-family: var(--font-ui);
  font-size: var(--size-small);
  color: var(--color-secondary-2);
  letter-spacing: 0.3px;
}

.page-home .breadcrumb__item {
  display: inline;
}

.page-home .breadcrumb__item + .breadcrumb__item::before {
  content: " / ";
  color: var(--color-border);
}

.page-home .page-home__title {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--sp-sm) var(--sp-lg) 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--size-h2);
  color: var(--color-primary);
  letter-spacing: 1px;
}

.page-home .page-home__subtitle {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--sp-xs) var(--sp-lg) var(--sp-lg);
  font-family: var(--font-body);
  font-size: var(--size-body);
  color: var(--color-neutral-3);
  opacity: 0.7;
  border-bottom: 1px solid var(--color-border);
}

/* ---------- 首屏拼贴区 ---------- */
.page-home .hero {
  position: relative;
  overflow: hidden;
  min-height: 70vh;
  background-color: var(--color-neutral-1);
  /* 坐标网格背景（CSS 绘制） */
  background-image:
    /* 垂直线 */
    linear-gradient(90deg, var(--bg-line-color) 1px, transparent 1px),
    /* 水平线 */
    linear-gradient(0deg, var(--bg-line-color) 1px, transparent 1px);
  background-size: 60px 60px;
  background-position: 0 0;
}

.page-home .hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.12;
  pointer-events: none;
  z-index: 0;
}

/* 坐标标记 */
.page-home .coord {
  position: absolute;
  font-family: var(--font-ui);
  font-size: var(--size-small);
  font-weight: var(--weight-bold);
  color: var(--color-secondary-1);
  letter-spacing: 0.5px;
  opacity: 0.7;
  z-index: 1;
  pointer-events: none;
}

.page-home .coord--a1 { top: 12%; left: 3%; }
.page-home .coord--b2 { top: 45%; left: 48%; }
.page-home .coord--c3 { bottom: 18%; right: 6%; }
.page-home .coord--d4 { bottom: 8%; left: 20%; }

/* 首屏内容容器 */
.page-home .hero__inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--sp-lg) var(--sp-lg) var(--sp-xl);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-xl);
  align-items: start;
}

/* ---------- 倒计时区块 ---------- */
.page-home .countdown-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--sp-lg) var(--sp-md);
  background-color: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(2px);
  border: 1px solid var(--color-border);
  box-shadow: var(--card-shadow);
  position: relative;
}

.page-home .countdown__icon {
  width: 56px;
  height: 56px;
  object-fit: contain;
  margin-bottom: var(--sp-sm);
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.06));
}

.page-home .countdown__number {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--countdown-size);
  line-height: 1;
  color: var(--color-primary);
  letter-spacing: -2px;
  cursor: default;
  transition: transform 0.2s ease, text-shadow 0.2s ease;
  position: relative;
}

.page-home .countdown__number:hover {
  transform: scale(1.04);
  text-shadow: 0 0 30px rgba(178, 34, 34, 0.25);
}

.page-home .countdown__label {
  font-family: var(--font-ui);
  font-size: var(--size-ui);
  color: var(--color-neutral-3);
  margin-top: var(--sp-xs);
  letter-spacing: 0.5px;
  opacity: 0.8;
}

/* ---------- 适配清单区块 ---------- */
.page-home .adapter-block {
  padding: var(--sp-lg) var(--sp-md);
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(2px);
  border: 1px solid var(--color-border);
  box-shadow: var(--card-shadow);
}

.page-home .adapter__title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--size-h4);
  color: var(--color-secondary-2);
  margin-bottom: var(--sp-xs);
}

.page-home .adapter__desc {
  font-family: var(--font-body);
  font-size: var(--size-small);
  color: var(--color-neutral-3);
  opacity: 0.7;
  margin-bottom: var(--sp-md);
}

.page-home .adapter-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-md);
}

.page-home .adapter-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: var(--sp-md);
  background-color: var(--color-neutral-1);
  border: 1px solid var(--color-border);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-home .adapter-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(178, 34, 34, 0.08);
}

.page-home .adapter-card__icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
  margin-bottom: var(--sp-sm);
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.04));
}

.page-home .adapter-card__title {
  font-family: var(--font-heading);
  font-weight: var(--weight-bold);
  font-size: var(--size-ui);
  color: var(--color-neutral-3);
  margin-bottom: var(--sp-xs);
}

.page-home .adapter-card__link {
  font-family: var(--font-ui);
  font-size: var(--size-small);
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-home .adapter-card__link:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ---------- 赛道分割线 ---------- */
.page-home .track-divider {
  height: 32px;
  background: linear-gradient(135deg, var(--color-neutral-2) 33%, transparent 33%),
              linear-gradient(225deg, var(--color-neutral-2) 33%, transparent 33%);
  background-size: 40px 40px;
  background-position: 0 0, 20px 0;
  background-color: var(--color-neutral-1);
  border-top: 2px solid var(--color-secondary-1);
  border-bottom: 1px solid var(--color-border);
  opacity: 0.6;
  margin: 0;
}

/* ---------- 下方内容区 ---------- */
.page-home .content-area {
  background-color: var(--color-neutral-2);
  padding: var(--sp-xl) 0;
}

.page-home .content-area__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-xl);
}

.page-home .section-title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--size-h3);
  color: var(--color-secondary-2);
  margin-bottom: var(--sp-xs);
  letter-spacing: 0.5px;
}

.page-home .section-desc {
  font-family: var(--font-body);
  font-size: var(--size-ui);
  color: var(--color-neutral-3);
  opacity: 0.7;
  margin-bottom: var(--sp-lg);
  line-height: 1.5;
}

/* ---------- 费用卡片 ---------- */
.page-home .fee-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-lg);
}

.page-home .fee-card {
  position: relative;
  overflow: hidden;
  background-color: var(--color-neutral-1);
  border: 1px solid var(--color-border);
  box-shadow: var(--card-shadow);
  transition: border-color 0.25s ease, box-shadow 0.3s ease;
  min-height: 220px;
}

.page-home .fee-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 8px 32px rgba(178, 34, 34, 0.10);
}

.page-home .fee-card__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.06;
  pointer-events: none;
}

.page-home .fee-card__inner {
  position: relative;
  z-index: 1;
  padding: var(--sp-lg);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-home .fee-card .index {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--size-h4);
  color: var(--color-primary);
  opacity: 0.3;
  margin-bottom: var(--sp-sm);
  line-height: 1;
}

.page-home .fee-card__title {
  font-family: var(--font-heading);
  font-weight: var(--weight-bold);
  font-size: var(--size-h4);
  color: var(--color-neutral-3);
  margin-bottom: var(--sp-sm);
}

.page-home .fee-card__desc {
  font-family: var(--font-body);
  font-size: var(--size-ui);
  line-height: var(--line-body);
  color: var(--color-neutral-3);
  opacity: 0.8;
  margin-bottom: var(--sp-md);
  max-width: 28ch;
}

.page-home .fee-card .btn--outline {
  align-self: flex-start;
}

/* ---------- 专栏文章列表 ---------- */
.page-home .article-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-lg);
  margin-bottom: var(--sp-lg);
}

.page-home .article-card {
  padding: var(--sp-lg);
  background-color: var(--color-neutral-1);
  border-left: 4px solid var(--color-primary);
  box-shadow: var(--card-shadow);
  transition: border-left-color 0.2s ease, box-shadow 0.25s ease;
}

.page-home .article-card:hover {
  border-left-color: var(--color-accent);
  box-shadow: 0 6px 24px rgba(0,0,0,0.06);
}

.page-home .article-card__tag {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: var(--size-small);
  color: var(--color-neutral-1);
  background-color: var(--color-primary);
  padding: 2px 10px;
  margin-bottom: var(--sp-sm);
  letter-spacing: 0.3px;
}

.page-home .article-card__title {
  font-family: var(--font-heading);
  font-weight: var(--weight-bold);
  font-size: var(--size-h4);
  color: var(--color-neutral-3);
  margin-bottom: var(--sp-sm);
}

.page-home .article-card__excerpt {
  font-family: var(--font-body);
  font-size: var(--size-ui);
  line-height: var(--line-body);
  color: var(--color-neutral-3);
  opacity: 0.8;
  margin-bottom: var(--sp-sm);
}

.page-home .article-card__link {
  font-family: var(--font-ui);
  font-size: var(--size-ui);
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--weight-bold);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-home .article-card__link:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.page-home .article__more {
  display: inline-block;
  margin-top: var(--sp-sm);
}

/* ---------- 桌面增强 (min-width: 768px) ---------- */
@media (min-width: 768px) {
  .page-home .hero {
    min-height: 75vh;
  }

  .page-home .hero__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-xl);
    padding-top: var(--sp-xl);
    padding-bottom: var(--sp-xl);
  }

  .page-home .countdown-block {
    padding: var(--sp-xl) var(--sp-lg);
    margin-top: var(--sp-lg);
  }

  .page-home .countdown__icon {
    width: 72px;
    height: 72px;
  }

  .page-home .adapter-block {
    padding: var(--sp-xl) var(--sp-lg);
    margin-top: 0;
  }

  .page-home .adapter-grid {
    gap: var(--sp-lg);
  }

  .page-home .adapter-card {
    padding: var(--sp-lg);
  }

  .page-home .adapter-card__icon {
    width: 40px;
    height: 40px;
  }

  .page-home .content-area__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-xl);
  }

  .page-home .fee-cards {
    grid-template-columns: 1fr;
  }

  .page-home .fee-card__inner {
    padding: var(--sp-xl);
  }

  .page-home .article-list {
    gap: var(--sp-md);
  }
}

/* ---------- 宽屏微调 (min-width: 1024px) ---------- */
@media (min-width: 1024px) {
  .page-home .hero__inner {
    gap: var(--sp-xl);
    padding-top: calc(var(--sp-xl) + var(--sp-lg));
  }

  .page-home .countdown-block {
    padding: var(--sp-xl) var(--sp-lg);
    margin-top: var(--sp-xl);
  }

  .page-home .adapter-block {
    padding: var(--sp-xl);
  }

  .page-home .adapter-grid {
    gap: var(--sp-md);
  }

  .page-home .fee-cards {
    grid-template-columns: 1fr;
  }
}

/* ---------- 超小屏保护 (max-width: 374px) ---------- */
@media (max-width: 374px) {
  .page-home .hero__inner {
    padding-left: var(--sp-md);
    padding-right: var(--sp-md);
  }

  .page-home .adapter-grid {
    grid-template-columns: 1fr;
  }

  .page-home .countdown__number {
    font-size: 4rem;
  }

  .page-home .fee-card__inner {
    padding: var(--sp-md);
  }

  .page-home .article-card {
    padding: var(--sp-md);
  }
}