/* ===== 首页专属样式 ===== */
.page-home {
  --home-gap: var(--space-xl);
  --home-card-shadow: var(--shadow-strong);
  --home-stack-offset: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: var(--home-gap);
  padding: 0;
  background: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--font-body);
}

/* ---------- 首屏封面 ---------- */
.page-home .home-hero {
  position: relative;
  background: var(--clr-primary);
  border-bottom: var(--border-thick) solid var(--clr-border);
  overflow: hidden;
  min-height: 70vh;
  display: flex;
  align-items: center;
}

.page-home .home-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  z-index: 0;
  pointer-events: none;
}

.page-home .home-hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
}

.page-home .home-hero__left {
  flex: 1 1 100%;
}

.page-home .home-hero__title {
  font-family: var(--font-heading);
  font-weight: var(--heading-weight, 900);
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  letter-spacing: var(--heading-tracking, -0.02em);
  line-height: 1.05;
  color: #fff;
  margin: 0 0 var(--space-sm);
  text-shadow: 4px 4px 0 rgba(0,0,0,0.3);
}

.page-home .home-hero__subtitle {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.25rem, 3.5vw, 2rem);
  letter-spacing: 0.08em;
  color: var(--clr-gold);
  margin: 0 0 var(--space-xs);
  text-transform: uppercase;
}

.page-home .home-hero__tagline {
  font-size: clamp(0.95rem, 1.8vw, 1.2rem);
  color: var(--clr-gold-light);
  margin: 0 0 var(--space-lg);
  letter-spacing: 0.04em;
  opacity: 0.85;
}

.page-home .home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.page-home .home-hero__card {
  flex: 1 1 240px;
  background: rgba(255,255,255,0.06);
  border: 2px solid var(--clr-gold);
  padding: var(--space-lg);
  border-radius: 0;
  box-shadow: var(--home-card-shadow);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-sm);
}

.page-home .home-hero__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  background: rgba(212,175,55,0.10);
}

.page-home .home-hero__card-icon {
  width: 60px;
  height: 60px;
  object-fit: contain;
  margin-bottom: var(--space-xs);
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

@media (min-width: 640px) {
  .page-home .home-hero__card-icon {
    width: 80px;
    height: 80px;
  }
}

.page-home .home-hero__card-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: #fff;
  margin: 0;
}

.page-home .home-hero__card-desc {
  font-size: 0.9rem;
  line-height: 1.5;
  color: rgba(255,255,255,0.8);
  margin: 0;
  flex: 1;
}

.page-home .home-hero__card-btn {
  margin-top: var(--space-sm);
  background: var(--clr-gold);
  color: var(--clr-primary-dark);
  font-weight: 700;
  border: 2px solid var(--clr-gold);
  padding: var(--space-sm) var(--space-lg);
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
  align-self: flex-start;
}

.page-home .home-hero__card-btn:hover {
  background: transparent;
  color: var(--clr-gold);
}

/* 右侧堆叠卡片 */
.page-home .home-hero__right {
  flex: 0 0 auto;
  width: 100%;
}

.page-home .home-hero__stack {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  margin-top: var(--space-md);
}

.page-home .home-hero__stack-card {
  background: var(--clr-bg);
  border: var(--border-thick) solid var(--clr-border);
  padding: var(--space-md) var(--space-lg);
  box-shadow: var(--shadow-strong);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  transition: transform var(--transition), box-shadow var(--transition);
}

.page-home .home-hero__stack-card:hover {
  transform: translateY(-2px) rotate(0deg) !important;
  box-shadow: var(--shadow-hover);
}

.page-home .home-hero__stack-card--1 {
  z-index: 3;
  transform: rotate(-0.8deg);
}

.page-home .home-hero__stack-card--2 {
  z-index: 2;
  margin-top: calc(-1 * var(--home-stack-offset));
  transform: rotate(0.6deg);
}

.page-home .home-hero__stack-card--3 {
  z-index: 1;
  margin-top: calc(-1 * var(--home-stack-offset));
  transform: rotate(-0.4deg);
}

.page-home .home-hero__stack-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  color: var(--clr-text);
  letter-spacing: -0.01em;
}

.page-home .home-hero__stack-date {
  font-size: 0.8rem;
  color: var(--clr-text-secondary);
  font-family: var(--font-mono);
}

.page-home .mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

/* 首屏桌面布局 */
@media (min-width: 900px) {
  .page-home .home-hero {
    min-height: 80vh;
  }
  .page-home .home-hero__inner {
    flex-direction: row;
    align-items: center;
    gap: var(--space-2xl);
  }
  .page-home .home-hero__left {
    flex: 1 1 58%;
  }
  .page-home .home-hero__right {
    flex: 0 0 36%;
    max-width: 380px;
  }
  .page-home .home-hero__stack {
    margin-top: 0;
  }
  .page-home .home-hero__stack-card {
    padding: var(--space-lg);
  }
  .page-home .home-hero__stack-name {
    font-size: 1.1rem;
  }
}

/* ---------- 资料下载区 ---------- */
.page-home .home-downloads {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg) var(--space-xl);
  width: 100%;
}

.page-home .home-downloads__header {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  border-bottom: 2px solid var(--clr-border);
  padding-bottom: var(--space-md);
}

.page-home .home-downloads__title-row {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.page-home .home-downloads__icon {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex-shrink: 0;
}

@media (min-width: 640px) {
  .page-home .home-downloads__icon {
    width: 60px;
    height: 60px;
  }
}

.page-home .home-downloads__heading {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.02em;
  color: var(--clr-primary);
  margin: 0;
}

.page-home .home-downloads__filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.page-home .home-downloads__filter-btn {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.85rem;
  padding: var(--space-xs) var(--space-md);
  background: var(--clr-bg-dark);
  border: 2px solid var(--clr-border);
  color: var(--clr-text-secondary);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  letter-spacing: 0.03em;
}

.page-home .home-downloads__filter-btn:hover {
  background: var(--clr-gold-light);
  color: var(--clr-primary-dark);
}

.page-home .home-downloads__filter-btn--active,
.page-home .home-downloads__filter-btn[aria-pressed="true"] {
  background: var(--clr-gold);
  color: var(--clr-primary-dark);
  box-shadow: var(--shadow-strong);
  border-color: var(--clr-gold);
}

.page-home .home-downloads__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

@media (min-width: 640px) {
  .page-home .home-downloads__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1000px) {
  .page-home .home-downloads__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-home .home-downloads__card {
  background: var(--clr-bg);
  border: var(--border-thick) solid var(--clr-border);
  box-shadow: var(--shadow-strong);
  transition: transform var(--transition), box-shadow var(--transition);
  list-style: none;
  overflow: hidden;
}

.page-home .home-downloads__card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.page-home .home-downloads__card summary {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-md) var(--space-lg);
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  position: relative;
}

.page-home .home-downloads__card summary::-webkit-details-marker {
  display: none;
}

.page-home .home-downloads__card summary::after {
  content: "+";
  position: absolute;
  top: var(--space-md);
  right: var(--space-lg);
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--clr-gold);
  transition: transform var(--transition);
  line-height: 1;
}

.page-home .home-downloads__card[open] summary::after {
  transform: rotate(45deg);
}

.page-home .home-downloads__card .card__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--clr-primary);
  padding-right: 2rem;
}

.page-home .home-downloads__card .card__meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--clr-text-secondary);
}

.page-home .home-downloads__card .card__body {
  padding: 0 var(--space-lg) var(--space-lg);
  border-top: 1px solid var(--clr-bg-dark);
  margin-top: var(--space-xs);
}

.page-home .home-downloads__card .card__text {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--clr-text-secondary);
  margin: var(--space-sm) 0 var(--space-md);
}

.page-home .home-downloads__card .card__link {
  display: inline-block;
  font-size: 0.85rem;
  padding: var(--space-xs) var(--space-md);
  text-decoration: none;
  font-weight: 600;
}

/* ---------- 登录FAQ ---------- */
.page-home .home-faq {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg) var(--space-2xl);
  width: 100%;
}

.page-home .home-faq__heading {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  letter-spacing: -0.02em;
  color: var(--clr-primary);
  margin: 0 0 var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--clr-border);
}

.page-home .home-faq__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.page-home .home-faq__item {
  background: var(--clr-bg);
  border: 2px solid var(--clr-bg-dark);
  box-shadow: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  list-style: none;
  overflow: hidden;
}

.page-home .home-faq__item:hover {
  border-color: var(--clr-gold);
  box-shadow: var(--shadow-strong);
}

.page-home .home-faq__item summary {
  list-style: none;
  padding: var(--space-md) var(--space-lg);
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--clr-text);
  position: relative;
  padding-right: 3rem;
}

.page-home .home-faq__item summary::-webkit-details-marker {
  display: none;
}

.page-home .home-faq__item summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: var(--space-lg);
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--clr-gold);
  transition: transform var(--transition);
  line-height: 1;
}

.page-home .home-faq__item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

.page-home .home-faq__answer {
  padding: 0 var(--space-lg) var(--space-md);
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--clr-text-secondary);
}

.page-home .home-faq__more {
  margin-top: var(--space-lg);
  font-size: 0.9rem;
  color: var(--clr-text-secondary);
  text-align: center;
}

.page-home .home-faq__more a {
  color: var(--clr-primary);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--clr-gold);
}

.page-home .home-faq__more a:hover {
  color: var(--clr-gold);
}

/* ---------- 滚动显现动画 ---------- */
.page-main[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.page-main .revealed[data-reveal] {
  opacity: 1;
  transform: translateY(0);
}

/* reduced-motion 兼容 */
@media (prefers-reduced-motion: reduce) {
  .page-home .home-hero__card,
  .page-home .home-hero__stack-card,
  .page-home .home-downloads__card,
  .page-home .home-faq__item {
    transition: none !important;
    transform: none !important;
  }
  .page-home .home-downloads__card summary::after,
  .page-home .home-faq__item summary::after {
    transition: none;
  }
  .page-home .home-downloads__card[open] summary::after,
  .page-home .home-faq__item[open] summary::after {
    transform: rotate(45deg);
  }
  .page-main [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ---------- 全局共享类微调（仅限首页语境） ---------- */
.page-home .btn {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  border: 2px solid var(--clr-border);
  padding: var(--space-sm) var(--space-lg);
  background: var(--clr-gold);
  color: var(--clr-primary-dark);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  cursor: pointer;
  letter-spacing: 0.02em;
}

.page-home .btn:hover {
  background: transparent;
  color: var(--clr-gold);
  box-shadow: var(--shadow-strong);
}

.page-home .btn--outline {
  background: transparent;
  color: var(--clr-primary);
  border-color: var(--clr-primary);
}

.page-home .btn--outline:hover {
  background: var(--clr-primary);
  color: var(--clr-gold);
  border-color: var(--clr-primary);
}

.page-home .card {
  background: var(--clr-bg);
  border: var(--border-thick) solid var(--clr-border);
  box-shadow: var(--shadow-strong);
}

/* ---------- 移动端安全间距 ---------- */
@media (max-width: 480px) {
  .page-home .home-hero__inner {
    padding: var(--space-lg) var(--space-md);
  }
  .page-home .home-hero__card {
    padding: var(--space-md);
  }
  .page-home .home-downloads,
  .page-home .home-faq {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }
  .page-home .home-downloads__card summary {
    padding: var(--space-sm) var(--space-md);
  }
  .page-home .home-downloads__card .card__body {
    padding: 0 var(--space-md) var(--space-md);
  }
  .page-home .home-faq__item summary {
    padding: var(--space-sm) var(--space-md);
    padding-right: 2.5rem;
  }
  .page-home .home-faq__answer {
    padding: 0 var(--space-md) var(--space-sm);
  }
  .page-home .home-hero__stack-card {
    padding: var(--space-sm) var(--space-md);
  }
}

.page-home {
  --heading-tracking: normal;
  --heading-weight: 600;
}