/* ============================================
   page-home – 首页专属样式
   移动端优先，含响应式媒体查询
   ============================================ */
.page-home {
  --ph-gold: #f5e6a3;
  --ph-accent: #39ff14;
  --ph-card-bg: rgba(42, 26, 78, 0.85);
  --ph-overlay: rgba(10, 2, 20, 0.55);
  --ph-grad-gold: linear-gradient(135deg, #d4af37, #f0e68c);
  --ph-shadow-glow: 0 0 20px rgba(57, 255, 20, 0.25);
  --ph-card-radius: 4px;
  --ph-transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* ---------- 通用节目标 ---------- */
.page-home .ph-section-tag {
  display: inline-block;
  font-family: var(--font-accent, 'Orbitron', monospace);
  font-size: clamp(0.65rem, 1.2vw, 0.85rem);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ph-accent, #39ff14);
  background: rgba(57, 255, 20, 0.08);
  padding: 0.25em 0.75em;
  border-left: 2px solid var(--ph-accent, #39ff14);
  margin-bottom: var(--space-sm, 1rem);
}

/* =============================================
   1. 首屏 Hero – 章节预览
   ============================================= */
.ph-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-bg, #1a0a2e);
}

.ph-hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.ph-hero-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  opacity: 0.35;
  filter: saturate(0.9) brightness(0.7) contrast(1.1);
  will-change: transform;
  animation: ph-hero-ken 18s infinite alternate ease-in-out;
}

@keyframes ph-hero-ken {
  0%   { transform: scale(1) translateX(0); }
  100% { transform: scale(1.08) translateX(-2%); }
}

.ph-hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse 80% 60% at 20% 50%, rgba(106, 13, 173, 0.35) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 30%, rgba(212, 175, 55, 0.20) 0%, transparent 60%),
    var(--ph-overlay);
}

.ph-hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-width, 1200px);
  width: 100%;
  padding: var(--space-lg, 4rem) var(--space-md, 2rem);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm, 1rem);
}

.ph-hero-label {
  font-family: var(--font-accent, 'Orbitron', monospace);
  font-size: clamp(0.7rem, 1.5vw, 0.95rem);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ph-gold, #f5e6a3);
  opacity: 0.8;
  margin-bottom: var(--space-xs, 0.5rem);
}

.ph-hero-title {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: clamp(2.4rem, 8.5vw, 6rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-title, #f5e6a3);
  text-shadow:
    0 0 10px rgba(212, 175, 55, 0.4),
    0 0 40px rgba(212, 175, 55, 0.15),
    0 0 80px rgba(57, 255, 20, 0.08);
  letter-spacing: 0.04em;
  margin: 0;
}

.ph-hero-sep {
  display: inline-block;
  margin: 0 0.1em;
  color: var(--ph-accent, #39ff14);
  opacity: 0.5;
  font-weight: 300;
}

.ph-hero-desc {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: clamp(0.85rem, 1.8vw, 1.1rem);
  color: var(--color-text, #f0f0f0);
  opacity: 0.75;
  max-width: 36em;
  margin: var(--space-xs, 0.5rem) 0 var(--space-sm, 1rem);
  line-height: 1.6;
}

/* 三块切角卡片 */
.ph-hero-cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md, 2rem);
  margin-top: var(--space-md, 2rem);
  width: 100%;
}

.ph-card-link {
  flex: 1 1 180px;
  max-width: 260px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  background: var(--ph-card-bg);
  padding: var(--space-md, 2rem) var(--space-sm, 1rem);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: var(--ph-card-radius);
  position: relative;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: transform var(--ph-transition), border-color var(--ph-transition), box-shadow var(--ph-transition);
  will-change: transform;
}

.ph-card-link::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  clip-path: inherit;
  background: var(--ph-grad-gold);
  z-index: -1;
  opacity: 0;
  transition: opacity var(--ph-transition);
}

.ph-card-link:hover {
  transform: translateY(-6px) scale(1.02);
  border-color: rgba(57, 255, 20, 0.5);
  box-shadow: 0 12px 40px rgba(57, 255, 20, 0.15), var(--ph-shadow-glow);
}

.ph-card-link:hover::before {
  opacity: 0.3;
}

.ph-card-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm, 1rem);
}

.ph-card-icon {
  width: 80px;
  height: auto;
  aspect-ratio: 1/1;
  object-fit: contain;
  opacity: 0.9;
  filter: drop-shadow(0 0 6px rgba(212, 175, 55, 0.3));
  transition: filter var(--ph-transition), transform var(--ph-transition);
}

.ph-card-link:hover .ph-card-icon {
  filter: drop-shadow(0 0 12px rgba(57, 255, 20, 0.4));
  transform: scale(1.05);
}

.ph-card-label {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: clamp(0.95rem, 1.4vw, 1.15rem);
  font-weight: 600;
  color: var(--ph-gold, #f5e6a3);
  letter-spacing: 0.05em;
}

.ph-card-meta {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: clamp(0.65rem, 1vw, 0.75rem);
  color: var(--color-text, #f0f0f0);
  opacity: 0.6;
  margin-top: var(--space-xs, 0.5rem);
  text-align: center;
  line-height: 1.4;
}

/* =============================================
   2. 平台升级动态 – 宽窄交替章节（窄）
   ============================================= */
.ph-upgrade {
  background: var(--color-bg, #1a0a2e);
  padding: var(--space-xl, 6rem) var(--space-md, 2rem);
  position: relative;
}

.ph-upgrade::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--ph-gold) 30%, var(--ph-accent) 70%, transparent 100%);
  opacity: 0.3;
}

.ph-upgrade-inner {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg, 4rem);
  align-items: flex-start;
}

.ph-upgrade-content {
  flex: 1 1 360px;
  min-width: 280px;
}

.ph-upgrade-title {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-title, #f5e6a3);
  text-shadow: 0 0 20px rgba(212, 175, 55, 0.15);
  margin: 0 0 var(--space-sm, 1rem);
}

.ph-upgrade-text {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: clamp(0.9rem, 1.3vw, 1.05rem);
  line-height: 1.7;
  color: var(--color-text, #f0f0f0);
  opacity: 0.85;
  margin-bottom: var(--space-md, 2rem);
}

.ph-upgrade-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-md, 2rem);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm, 1rem);
}

.ph-upgrade-list li {
  position: relative;
  padding-left: 1.5em;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: clamp(0.85rem, 1.2vw, 0.95rem);
  line-height: 1.5;
  color: var(--color-text, #f0f0f0);
  opacity: 0.8;
}

.ph-upgrade-list li::before {
  content: '◆';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--ph-accent, #39ff14);
  font-size: 0.6em;
  opacity: 0.7;
}

.ph-upgrade-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.7em 1.8em;
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: clamp(0.85rem, 1.1vw, 0.95rem);
  font-weight: 600;
  background: var(--ph-grad-gold);
  color: #1a0a2e;
  border: none;
  border-radius: var(--ph-card-radius);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--ph-transition), box-shadow var(--ph-transition);
  will-change: transform;
}

.ph-upgrade-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(57, 255, 20, 0.25);
}

.ph-upgrade-visual {
  flex: 0 0 auto;
  width: clamp(280px, 30vw, 400px);
}

.ph-upgrade-img {
  width: 100%;
  height: auto;
  aspect-ratio: 2/3;
  object-fit: cover;
  object-position: center;
  border-radius: var(--ph-card-radius);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.4),
    inset 0 0 0 1px rgba(212, 175, 55, 0.15);
  filter: saturate(0.85) contrast(1.05);
  transition: transform var(--ph-transition), box-shadow var(--ph-transition);
}

.ph-upgrade-img:hover {
  transform: scale(1.02);
  box-shadow:
    0 12px 48px rgba(57, 255, 20, 0.12),
    inset 0 0 0 1px rgba(212, 175, 55, 0.3);
}

/* =============================================
   3. 快速导航 – 宽章节（展览标签卡片）
   ============================================= */
.ph-quicknav {
  background: var(--color-purple-dark, #0d0520);
  padding: var(--space-xl, 6rem) var(--space-md, 2rem);
  position: relative;
}

.ph-quicknav::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(57, 255, 20, 0.2), transparent);
}

.ph-quicknav-inner {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
}

.ph-quicknav-header {
  margin-bottom: var(--space-lg, 4rem);
  max-width: 480px;
}

.ph-quicknav-title {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-title, #f5e6a3);
  text-shadow: 0 0 20px rgba(212, 175, 55, 0.12);
  margin: 0 0 var(--space-xs, 0.5rem);
}

.ph-quicknav-desc {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: clamp(0.85rem, 1.2vw, 1rem);
  color: var(--color-text, #f0f0f0);
  opacity: 0.6;
  margin: 0;
}

.ph-quicknav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-md, 2rem);
}

/* 展览标签卡片 */
.ph-exhibit-card {
  display: flex;
  align-items: stretch;
  text-decoration: none;
  background: rgba(42, 26, 78, 0.5);
  border: 1px solid rgba(212, 175, 55, 0.12);
  border-radius: var(--ph-card-radius);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  padding: 0;
  transition: background var(--ph-transition), border-color var(--ph-transition), transform var(--ph-transition);
  will-change: transform;
  overflow: hidden;
}

.ph-exhibit-card:hover {
  background: rgba(42, 26, 78, 0.85);
  border-color: rgba(57, 255, 20, 0.3);
  transform: translateY(-4px);
}

.ph-exhibit-num {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: clamp(48px, 6vw, 64px);
  font-family: var(--font-accent, 'Orbitron', monospace);
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 700;
  color: var(--ph-gold, #f5e6a3);
  background: rgba(212, 175, 55, 0.08);
  border-right: 1px solid rgba(212, 175, 55, 0.1);
  letter-spacing: 0.02em;
  transition: background var(--ph-transition), color var(--ph-transition);
}

.ph-exhibit-card:hover .ph-exhibit-num {
  background: rgba(57, 255, 20, 0.1);
  color: var(--ph-accent, #39ff14);
}

.ph-exhibit-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-sm, 1rem) var(--space-md, 2rem) var(--space-sm, 1rem) var(--space-sm, 1rem);
  gap: 0.3em;
  position: relative;
}

.ph-exhibit-heading {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  font-weight: 600;
  color: var(--ph-gold, #f5e6a3);
  letter-spacing: 0.02em;
  transition: color var(--ph-transition);
}

.ph-exhibit-card:hover .ph-exhibit-heading {
  color: #fff;
}

.ph-exhibit-desc {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: clamp(0.72rem, 1.1vw, 0.82rem);
  color: var(--color-text, #f0f0f0);
  opacity: 0.6;
  line-height: 1.4;
  max-width: 28em;
}

.ph-exhibit-arrow {
  position: absolute;
  right: var(--space-sm, 1rem);
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: var(--ph-accent, #39ff14);
  opacity: 0;
  transition: opacity var(--ph-transition), transform var(--ph-transition);
}

.ph-exhibit-card:hover .ph-exhibit-arrow {
  opacity: 0.7;
  transform: translateY(-50%) translateX(4px);
}

/* =============================================
   4. 信任声明
   ============================================= */
.ph-trust {
  background: var(--color-bg, #1a0a2e);
  padding: var(--space-lg, 4rem) var(--space-md, 2rem);
  border-top: 1px solid rgba(212, 175, 55, 0.06);
}

.ph-trust-inner {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md, 2rem);
}

.ph-trust-text {
  flex: 1 1 300px;
}

.ph-trust-text .ph-section-tag {
  margin-bottom: var(--space-xs, 0.5rem);
}

.ph-trust-text p {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: clamp(0.85rem, 1.2vw, 0.95rem);
  line-height: 1.6;
  color: var(--color-text, #f0f0f0);
  opacity: 0.65;
  margin: 0;
}

.ph-trust-pattern {
  flex: 0 0 auto;
  width: clamp(100px, 12vw, 200px);
  height: auto;
  aspect-ratio: 1/1;
  object-fit: contain;
  opacity: 0.2;
  filter: drop-shadow(0 0 20px rgba(212, 175, 55, 0.15));
}

/* =============================================
   响应式 – 移动端优先调整
   ============================================= */

/* 窄屏（< 640px） – 移动端 */
@media (max-width: 639px) {
  .ph-hero {
    min-height: 92vh;
    align-items: flex-start;
    padding-top: 10vh;
  }

  .ph-hero-inner {
    padding: var(--space-md, 2rem) var(--space-sm, 1rem);
    gap: var(--space-sm, 1rem);
  }

  .ph-hero-title {
    font-size: clamp(2rem, 12vw, 2.8rem);
  }

  .ph-hero-sep {
    display: block;
    opacity: 0.3;
    font-size: 0.6em;
    line-height: 0.8;
  }

  .ph-hero-cards {
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm, 1rem);
  }

  .ph-card-link {
    flex: 0 0 auto;
    width: 100%;
    max-width: 320px;
    flex-direction: row;
    align-items: center;
    padding: var(--space-sm, 1rem);
  }

  .ph-card-visual {
    flex-direction: row;
    gap: var(--space-sm, 1rem);
  }

  .ph-card-icon {
    width: 56px;
  }

  .ph-card-meta {
    display: none;
  }

  .ph-upgrade {
    padding: var(--space-lg, 4rem) var(--space-sm, 1rem);
  }

  .ph-upgrade-inner {
    gap: var(--space-md, 2rem);
  }

  .ph-upgrade-visual {
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
  }

  .ph-upgrade-list li {
    font-size: 0.82rem;
  }

  .ph-quicknav {
    padding: var(--space-lg, 4rem) var(--space-sm, 1rem);
  }

  .ph-quicknav-grid {
    grid-template-columns: 1fr;
    gap: var(--space-sm, 1rem);
  }

  .ph-exhibit-num {
    width: 40px;
    font-size: 1rem;
  }

  .ph-exhibit-body {
    padding: var(--space-xs, 0.5rem) var(--space-sm, 1rem);
  }

  .ph-exhibit-desc {
    display: none;
  }

  .ph-exhibit-arrow {
    opacity: 0.4;
    position: static;
    transform: none;
    margin-top: 0.2em;
  }

  .ph-exhibit-card:hover .ph-exhibit-arrow {
    transform: translateX(2px);
  }

  .ph-trust {
    padding: var(--space-md, 2rem) var(--space-sm, 1rem);
  }

  .ph-trust-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .ph-trust-pattern {
    width: 80px;
    align-self: flex-end;
  }
}

/* 中屏（640px – 1023px） */
@media (min-width: 640px) and (max-width: 1023px) {
  .ph-hero-cards {
    gap: var(--space-sm, 1rem);
  }

  .ph-card-link {
    flex: 1 1 150px;
    max-width: 200px;
    padding: var(--space-sm, 1rem);
  }

  .ph-card-icon {
    width: 60px;
  }

  .ph-upgrade-inner {
    gap: var(--space-md, 2rem);
  }

  .ph-upgrade-visual {
    width: clamp(240px, 35vw, 320px);
  }

  .ph-quicknav-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm, 1rem);
  }

  .ph-exhibit-body {
    padding: var(--space-sm, 1rem);
  }

  .ph-exhibit-desc {
    font-size: 0.75rem;
  }
}

/* 大屏（≥ 1024px）– 桌面优化 */
@media (min-width: 1024px) {
  .ph-hero-inner {
    padding: var(--space-xl, 8rem) var(--space-md, 2rem);
  }

  .ph-hero-cards {
    gap: var(--space-lg, 4rem);
  }

  .ph-card-link {
    flex: 1 1 220px;
    max-width: 280px;
    padding: var(--space-lg, 3rem) var(--space-md, 2rem);
  }

  .ph-card-link:hover {
    transform: translateY(-8px) scale(1.03);
  }

  .ph-upgrade-inner {
    flex-wrap: nowrap;
  }

  .ph-upgrade-content {
    flex: 1 1 55%;
  }

  .ph-upgrade-visual {
    flex: 0 0 35%;
  }

  .ph-quicknav-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .ph-exhibit-card {
    min-height: 160px;
  }

  .ph-trust-inner {
    flex-wrap: nowrap;
  }
}

/* 超大屏（≥ 1600px）– 留白增强 */
@media (min-width: 1600px) {
  .ph-hero-inner {
    max-width: 1400px;
    padding: var(--space-xl, 8rem) 0;
  }

  .ph-hero-title {
    font-size: 7rem;
  }

  .ph-upgrade-inner,
  .ph-quicknav-inner,
  .ph-trust-inner {
    max-width: 1400px;
  }
}

/* ---------- 全局工具复用 ---------- */
.page-home .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.7em 1.8em;
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: clamp(0.85rem, 1.1vw, 0.95rem);
  font-weight: 600;
  background: var(--ph-grad-gold);
  color: #1a0a2e;
  border: none;
  border-radius: var(--ph-card-radius);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--ph-transition), box-shadow var(--ph-transition);
  will-change: transform;
}

.page-home .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(57, 255, 20, 0.25);
}

/* 所有图片响应式兜底 */
.page-home img {
  max-width: 100%;
  height: auto;
  display: block;
}