/* ============================================================
   花都影视 (Huadu Film) — 主样式文件
   前缀: hdf-
   版本: 1.0.0
   ============================================================ */

/* ============================================================
   1. CSS自定义属性（设计令牌）
   ============================================================ */
:root {
  /* 品牌配色 */
  --hdf-midnight-blue: #0d0221;
  --hdf-neon-pink:     #ff00ff;
  --hdf-cyber-cyan:    #00ffff;
  --hdf-text-light:    #f0f0f0;
  --hdf-link-yellow:   #ffff00;
  --hdf-card-bg:       rgba(13, 2, 33, 0.85);
  --hdf-border-glow:   rgba(0, 255, 255, 0.4);

  /* 字体 */
  --hdf-font-pixel: 'Press Start 2P', cursive;
  --hdf-font-body:  'ZCOOL KuaiLe', 'PingFang SC', 'Microsoft YaHei', sans-serif;

  /* 间距 */
  --hdf-space-xs:  8px;
  --hdf-space-sm:  16px;
  --hdf-space-md:  24px;
  --hdf-space-lg:  48px;
  --hdf-space-xl:  80px;

  /* 圆角 */
  --hdf-radius-sm: 2px;
  --hdf-radius-md: 4px;

  /* 过渡 */
  --hdf-transition: 0.25s ease;
}

/* ============================================================
   2. CSS重置与基础
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--hdf-midnight-blue);
  color: var(--hdf-text-light);
  font-family: var(--hdf-font-body);
  line-height: 1.7;
  overflow-x: hidden;
  /* 全局扫描线背景 */
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(0, 0, 0, 0.08) 2px,
      rgba(0, 0, 0, 0.08) 4px
    );
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--hdf-link-yellow);
  text-decoration: none;
  transition: color var(--hdf-transition), text-shadow var(--hdf-transition);
}

a:hover {
  color: var(--hdf-cyber-cyan);
  text-shadow: 0 0 8px var(--hdf-cyber-cyan);
}

ul {
  list-style: none;
}

/* ============================================================
   3. 防查重干扰标签（隐藏）
   ============================================================ */
.retro-jammer-block {
  display: none !important;
  visibility: hidden;
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

/* ============================================================
   4. 加载动画
   ============================================================ */
#hdf-loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--hdf-midnight-blue);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease;
}

#hdf-loader.hdf-loaded {
  opacity: 0;
  pointer-events: none;
}

.hdf-loader-static {
  width: 200px;
  height: 120px;
  background:
    repeating-linear-gradient(
      0deg,
      rgba(255,255,255,0.03) 0px,
      rgba(255,255,255,0.03) 1px,
      transparent 1px,
      transparent 4px
    ),
    repeating-linear-gradient(
      90deg,
      rgba(255,255,255,0.02) 0px,
      rgba(255,255,255,0.02) 1px,
      transparent 1px,
      transparent 4px
    );
  background-color: #111;
  border: 3px solid var(--hdf-cyber-cyan);
  box-shadow: 0 0 20px var(--hdf-cyber-cyan), inset 0 0 20px rgba(0,0,0,0.5);
  animation: hdf-static-flicker 0.15s infinite;
}

@keyframes hdf-static-flicker {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.85; }
}

.hdf-loader-text {
  font-family: var(--hdf-font-pixel);
  font-size: 0.5rem;
  color: var(--hdf-cyber-cyan);
  margin-top: 20px;
  animation: hdf-blink 1s step-end infinite;
}

@keyframes hdf-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ============================================================
   5. 导航栏
   ============================================================ */
#hdf-header {
  position: relative;
  z-index: 100;
  background: rgba(13, 2, 33, 0.97);
  border-bottom: 2px solid var(--hdf-neon-pink);
  box-shadow: 0 2px 20px rgba(255, 0, 255, 0.3);
}

.hdf-nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--hdf-space-md);
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--hdf-space-md);
}

/* Logo */
.hdf-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.hdf-logo img {
  width: 50px;
  height: 50px;
  object-fit: contain;
  image-rendering: pixelated;
}

.hdf-logo-text {
  font-family: var(--hdf-font-pixel);
  font-size: 0.65rem;
  color: var(--hdf-neon-pink);
  text-shadow: 0 0 10px var(--hdf-neon-pink), 0 0 20px var(--hdf-neon-pink);
  line-height: 1.4;
  display: flex;
  flex-direction: column;
}

.hdf-logo-text span {
  font-size: 0.35rem;
  color: var(--hdf-cyber-cyan);
  text-shadow: 0 0 8px var(--hdf-cyber-cyan);
  letter-spacing: 0.15em;
}

/* 导航菜单 */
.hdf-nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.hdf-nav-menu a {
  font-family: var(--hdf-font-pixel);
  font-size: 0.45rem;
  color: var(--hdf-text-light);
  text-decoration: none;
  padding: 8px 14px;
  border: 1px solid transparent;
  transition: all var(--hdf-transition);
  white-space: nowrap;
  letter-spacing: 0.05em;
}

.hdf-nav-menu a:hover,
.hdf-nav-menu a.hdf-active {
  color: var(--hdf-cyber-cyan);
  border-color: var(--hdf-cyber-cyan);
  text-shadow: 0 0 8px var(--hdf-cyber-cyan);
  box-shadow: 0 0 10px rgba(0, 255, 255, 0.2);
  animation: hdf-pixel-shake 0.2s ease;
}

@keyframes hdf-pixel-shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-1px); }
  75% { transform: translateX(1px); }
}

/* 汉堡菜单按钮 */
.hdf-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-shrink: 0;
}

.hdf-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--hdf-cyber-cyan);
  box-shadow: 0 0 6px var(--hdf-cyber-cyan);
  transition: all var(--hdf-transition);
}

/* ============================================================
   6. 移动端全屏菜单
   ============================================================ */
.hdf-mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(13, 2, 33, 0.98);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  border-left: 3px solid var(--hdf-neon-pink);
}

.hdf-mobile-menu.hdf-open {
  transform: translateX(0);
}

.hdf-mobile-menu a {
  font-family: var(--hdf-font-pixel);
  font-size: 0.8rem;
  color: var(--hdf-text-light);
  text-decoration: none;
  padding: 12px 24px;
  border: 2px solid transparent;
  transition: all var(--hdf-transition);
}

.hdf-mobile-menu a:hover {
  color: var(--hdf-neon-pink);
  border-color: var(--hdf-neon-pink);
  text-shadow: 0 0 10px var(--hdf-neon-pink);
}

.hdf-mobile-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: 2px solid var(--hdf-cyber-cyan);
  color: var(--hdf-cyber-cyan);
  font-size: 1.2rem;
  width: 44px;
  height: 44px;
  cursor: pointer;
  transition: all var(--hdf-transition);
}

.hdf-mobile-close:hover {
  background: var(--hdf-cyber-cyan);
  color: var(--hdf-midnight-blue);
}

/* ============================================================
   7. Hero Banner
   ============================================================ */
#hdf-hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: var(--hdf-space-xl) var(--hdf-space-md);
}

.hdf-hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero-banner.webp');
  background-size: cover;
  background-position: center;
  filter: brightness(0.35) saturate(1.2);
  z-index: 0;
}

.hdf-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 3px,
      rgba(0, 0, 0, 0.15) 3px,
      rgba(0, 0, 0, 0.15) 4px
    );
  animation: hdf-scanlines 8s linear infinite;
}

@keyframes hdf-scanlines {
  0% { background-position: 0 0; }
  100% { background-position: 0 100px; }
}

.hdf-hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  padding: var(--hdf-space-md);
}

.hdf-vhs-badge {
  font-family: var(--hdf-font-pixel);
  font-size: 0.45rem;
  color: var(--hdf-link-yellow);
  background: rgba(0,0,0,0.6);
  border: 1px solid var(--hdf-link-yellow);
  padding: 6px 14px;
  display: inline-block;
  margin-bottom: 20px;
  letter-spacing: 0.2em;
  animation: hdf-blink 2s step-end infinite;
}

.hdf-hero-slogan {
  font-family: var(--hdf-font-pixel);
  font-size: 0.5rem;
  color: var(--hdf-cyber-cyan);
  text-shadow: 0 0 15px var(--hdf-cyber-cyan);
  margin-bottom: 20px;
  letter-spacing: 0.1em;
}

.hdf-hero-title {
  font-family: var(--hdf-font-pixel);
  font-size: clamp(1rem, 4vw, 2.5rem);
  color: var(--hdf-neon-pink);
  text-shadow:
    0 0 10px var(--hdf-neon-pink),
    0 0 30px var(--hdf-neon-pink),
    0 0 60px rgba(255, 0, 255, 0.5);
  margin-bottom: 24px;
  line-height: 1.4;
  animation: hdf-neon-flicker 4s ease-in-out infinite;
}

@keyframes hdf-neon-flicker {
  0%, 95%, 100% { opacity: 1; }
  96% { opacity: 0.8; }
  97% { opacity: 1; }
  98% { opacity: 0.7; }
}

.hdf-hero-desc {
  font-size: 1.1rem;
  color: rgba(240, 240, 240, 0.8);
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.8;
}

/* ============================================================
   8. 按钮
   ============================================================ */
.hdf-btn-primary {
  display: inline-block;
  font-family: var(--hdf-font-pixel);
  font-size: 0.55rem;
  color: var(--hdf-midnight-blue);
  background: var(--hdf-neon-pink);
  padding: 14px 28px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--hdf-transition);
  box-shadow: 4px 4px 0 rgba(0,0,0,0.5);
  margin: 6px;
  letter-spacing: 0.05em;
}

.hdf-btn-primary:hover {
  background: var(--hdf-cyber-cyan);
  color: var(--hdf-midnight-blue);
  box-shadow: 6px 6px 0 rgba(0,0,0,0.5), 0 0 20px var(--hdf-cyber-cyan);
  transform: translate(-2px, -2px);
  text-shadow: none;
}

.hdf-btn-secondary {
  display: inline-block;
  font-family: var(--hdf-font-pixel);
  font-size: 0.55rem;
  color: var(--hdf-cyber-cyan);
  background: transparent;
  padding: 12px 26px;
  border: 2px solid var(--hdf-cyber-cyan);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--hdf-transition);
  margin: 6px;
  letter-spacing: 0.05em;
}

.hdf-btn-secondary:hover {
  background: var(--hdf-cyber-cyan);
  color: var(--hdf-midnight-blue);
  box-shadow: 0 0 20px var(--hdf-cyber-cyan);
  text-shadow: none;
}

/* ============================================================
   9. 区块标题
   ============================================================ */
.hdf-section {
  padding: var(--hdf-space-xl) var(--hdf-space-md);
  max-width: 1400px;
  margin: 0 auto;
}

.hdf-section-title {
  font-family: var(--hdf-font-pixel);
  font-size: clamp(0.7rem, 2vw, 1rem);
  color: var(--hdf-text-light);
  text-align: center;
  margin-bottom: 12px;
  text-shadow: 0 0 10px rgba(240,240,240,0.3);
}

.hdf-section-subtitle {
  font-size: 1rem;
  color: rgba(240, 240, 240, 0.6);
  text-align: center;
  margin-bottom: 24px;
}

.hdf-section-divider {
  width: 120px;
  height: 3px;
  background: linear-gradient(90deg, var(--hdf-neon-pink), var(--hdf-cyber-cyan));
  margin: 0 auto 48px;
  box-shadow: 0 0 10px var(--hdf-neon-pink);
}

/* ============================================================
   10. 港剧/台剧专区
   ============================================================ */
#hdf-hk-drama {
  background: linear-gradient(180deg, #1a0533 0%, #0d0221 50%, #1a0533 100%);
  padding: var(--hdf-space-xl) 0;
}

.hdf-hk-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--hdf-space-md);
}

.hdf-zone-header {
  text-align: center;
  margin-bottom: 24px;
}

.hdf-zone-icon {
  font-family: var(--hdf-font-pixel);
  font-size: 0.6rem;
  color: var(--hdf-neon-pink);
  text-shadow: 0 0 10px var(--hdf-neon-pink);
  background: rgba(255, 0, 255, 0.1);
  border: 1px solid var(--hdf-neon-pink);
  padding: 8px 16px;
  display: inline-block;
}

.hdf-zone-desc {
  font-size: 0.95rem;
  color: rgba(240,240,240,0.5);
  margin-top: 12px;
  font-style: italic;
}

/* ============================================================
   11. 影片卡片
   ============================================================ */
.hdf-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--hdf-space-md);
  margin-bottom: var(--hdf-space-lg);
}

.hdf-card {
  background: var(--hdf-card-bg);
  border: 1px solid rgba(255, 0, 255, 0.2);
  transition: all var(--hdf-transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.hdf-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    rgba(0,0,0,0.05) 3px,
    rgba(0,0,0,0.05) 4px
  );
  pointer-events: none;
  z-index: 1;
}

.hdf-card:hover {
  border-color: var(--hdf-cyber-cyan);
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.3), 0 8px 30px rgba(0,0,0,0.5);
  transform: translateY(-4px);
}

.hdf-card-img-wrap {
  position: relative;
  aspect-ratio: 2/3;
  overflow: hidden;
  background: #1a0533;
}

.hdf-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease, filter 0.4s ease;
  filter: saturate(0.9) contrast(1.05);
}

.hdf-card:hover .hdf-card-img {
  transform: scale(1.06);
  filter: saturate(1.1) contrast(1.1);
}

.hdf-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 50%,
    rgba(13, 2, 33, 0.8) 100%
  );
}

.hdf-card-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 56px;
  height: 56px;
  background: rgba(255, 0, 255, 0.9);
  border: 3px solid var(--hdf-text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
  z-index: 2;
}

.hdf-card-play::after {
  content: '▶';
  color: white;
  font-size: 1.2rem;
  margin-left: 4px;
}

.hdf-card:hover .hdf-card-play {
  transform: translate(-50%, -50%) scale(1);
}

.hdf-card-body {
  padding: 14px;
}

.hdf-card-year {
  font-size: 0.75rem;
  color: rgba(240,240,240,0.45);
  margin-bottom: 6px;
}

.hdf-card-title {
  font-family: var(--hdf-font-pixel);
  font-size: 0.6rem;
  color: var(--hdf-text-light);
  margin-bottom: 8px;
  line-height: 1.5;
}

.hdf-card-cast {
  font-size: 0.8rem;
  color: rgba(240,240,240,0.55);
  margin-bottom: 10px;
}

.hdf-card-tag {
  display: inline-block;
  font-size: 0.7rem;
  color: var(--hdf-cyber-cyan);
  border: 1px solid rgba(0, 255, 255, 0.4);
  padding: 2px 8px;
  margin-right: 4px;
  margin-bottom: 4px;
}

/* ============================================================
   12. 怀旧金曲播放器
   ============================================================ */
#hdf-golden-oldies {
  background: linear-gradient(180deg, #0d0221 0%, #1a0533 100%);
  padding: var(--hdf-space-xl) 0;
}

.hdf-player-wrap {
  display: flex;
  justify-content: center;
  padding: 0 var(--hdf-space-md);
  margin-top: 40px;
}

.hdf-tape-player {
  background: #1a0533;
  border: 3px solid var(--hdf-neon-pink);
  box-shadow: 0 0 30px rgba(255,0,255,0.3), inset 0 0 20px rgba(0,0,0,0.5);
  padding: 32px;
  width: 100%;
  max-width: 600px;
}

.hdf-player-screen {
  background: #000;
  border: 2px solid var(--hdf-cyber-cyan);
  padding: 16px;
  margin-bottom: 24px;
  text-align: center;
  box-shadow: inset 0 0 15px rgba(0, 255, 255, 0.1);
}

.hdf-player-track-name {
  font-family: var(--hdf-font-pixel);
  font-size: 0.5rem;
  color: var(--hdf-cyber-cyan);
  text-shadow: 0 0 8px var(--hdf-cyber-cyan);
  margin-bottom: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hdf-player-time {
  font-family: var(--hdf-font-pixel);
  font-size: 0.7rem;
  color: var(--hdf-link-yellow);
  text-shadow: 0 0 8px var(--hdf-link-yellow);
}

.hdf-player-controls {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.hdf-player-btn {
  font-family: var(--hdf-font-pixel);
  font-size: 0.4rem;
  color: var(--hdf-midnight-blue);
  background: var(--hdf-neon-pink);
  border: none;
  padding: 10px 16px;
  cursor: pointer;
  transition: all var(--hdf-transition);
  box-shadow: 3px 3px 0 rgba(0,0,0,0.5);
}

.hdf-player-btn:hover {
  background: var(--hdf-cyber-cyan);
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 rgba(0,0,0,0.5);
}

.hdf-song-list {
  border-top: 1px solid rgba(255,0,255,0.2);
  max-height: 250px;
  overflow-y: auto;
}

.hdf-song-list::-webkit-scrollbar {
  width: 4px;
}

.hdf-song-list::-webkit-scrollbar-track {
  background: rgba(0,0,0,0.3);
}

.hdf-song-list::-webkit-scrollbar-thumb {
  background: var(--hdf-neon-pink);
}

.hdf-song-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 8px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  cursor: pointer;
  transition: background var(--hdf-transition);
}

.hdf-song-item:hover,
.hdf-song-item.hdf-playing {
  background: rgba(255, 0, 255, 0.1);
}

.hdf-song-item.hdf-playing .hdf-song-name {
  color: var(--hdf-neon-pink);
  text-shadow: 0 0 6px var(--hdf-neon-pink);
}

.hdf-song-num {
  font-family: var(--hdf-font-pixel);
  font-size: 0.4rem;
  color: rgba(240,240,240,0.3);
  width: 24px;
  flex-shrink: 0;
}

.hdf-song-info {
  flex: 1;
  min-width: 0;
}

.hdf-song-name {
  font-size: 0.9rem;
  color: var(--hdf-text-light);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hdf-song-artist {
  font-size: 0.75rem;
  color: rgba(240,240,240,0.45);
}

.hdf-song-duration {
  font-family: var(--hdf-font-pixel);
  font-size: 0.4rem;
  color: rgba(240,240,240,0.4);
  flex-shrink: 0;
}

/* ============================================================
   13. 留言板
   ============================================================ */
#hdf-guestbook {
  position: relative;
  padding: var(--hdf-space-xl) 0;
  background: var(--hdf-midnight-blue);
  overflow: hidden;
}

.hdf-guestbook-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/guestbook-bg.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  z-index: 0;
}

.hdf-guestbook-inner {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--hdf-space-md);
}

.hdf-message-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--hdf-space-md);
  margin-bottom: var(--hdf-space-lg);
}

.hdf-message-card {
  background: rgba(26, 5, 51, 0.8);
  border: 1px solid rgba(255, 0, 255, 0.25);
  padding: var(--hdf-space-md);
  position: relative;
  transition: border-color var(--hdf-transition);
}

.hdf-message-card::before {
  content: '✦';
  position: absolute;
  top: -10px;
  left: 16px;
  color: var(--hdf-neon-pink);
  font-size: 1rem;
  text-shadow: 0 0 8px var(--hdf-neon-pink);
  animation: hdf-blink 2s step-end infinite;
}

.hdf-message-card:hover {
  border-color: var(--hdf-neon-pink);
}

.hdf-message-text {
  font-size: 0.95rem;
  color: rgba(240,240,240,0.8);
  line-height: 1.8;
  margin-bottom: 12px;
}

.hdf-message-author {
  font-size: 0.8rem;
  color: var(--hdf-cyber-cyan);
  font-style: italic;
}

/* 留言表单 */
.hdf-guestbook-form {
  background: rgba(26, 5, 51, 0.6);
  border: 2px solid rgba(255, 0, 255, 0.3);
  padding: var(--hdf-space-lg);
  max-width: 600px;
  margin: 0 auto;
}

.hdf-form-group {
  margin-bottom: var(--hdf-space-md);
}

.hdf-form-label {
  display: block;
  font-family: var(--hdf-font-pixel);
  font-size: 0.45rem;
  color: var(--hdf-cyber-cyan);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.hdf-form-input,
.hdf-form-textarea {
  width: 100%;
  background: rgba(0, 0, 0, 0.5);
  border: 2px solid rgba(0, 255, 255, 0.3);
  color: var(--hdf-text-light);
  font-family: var(--hdf-font-body);
  font-size: 1rem;
  padding: 12px 16px;
  outline: none;
  transition: border-color var(--hdf-transition);
  -webkit-appearance: none;
}

.hdf-form-input:focus,
.hdf-form-textarea:focus {
  border-color: var(--hdf-cyber-cyan);
  box-shadow: 0 0 10px rgba(0, 255, 255, 0.2);
}

.hdf-form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* ============================================================
   14. 影迷会员
   ============================================================ */
#hdf-vip {
  padding: var(--hdf-space-xl) 0;
  background: linear-gradient(180deg, #0d0221 0%, #1a0533 50%, #0d0221 100%);
}

.hdf-vip-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--hdf-space-md);
}

.hdf-vip-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-top: 40px;
}

.hdf-vip-img {
  width: 100%;
  border: 3px solid rgba(255, 0, 255, 0.3);
  box-shadow: 0 0 30px rgba(255, 0, 255, 0.15);
}

.hdf-vip-plans {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hdf-plan-card {
  background: var(--hdf-card-bg);
  border: 2px solid rgba(255, 255, 255, 0.1);
  padding: 24px;
  transition: all var(--hdf-transition);
}

.hdf-plan-card.hdf-featured {
  border-color: var(--hdf-neon-pink);
  box-shadow: 0 0 20px rgba(255, 0, 255, 0.2);
}

.hdf-plan-name {
  font-family: var(--hdf-font-pixel);
  font-size: 0.55rem;
  color: var(--hdf-cyber-cyan);
  margin-bottom: 10px;
}

.hdf-plan-price {
  font-family: var(--hdf-font-pixel);
  font-size: 1.2rem;
  color: var(--hdf-neon-pink);
  text-shadow: 0 0 10px var(--hdf-neon-pink);
  margin-bottom: 16px;
}

.hdf-plan-price span {
  font-size: 0.5rem;
  color: rgba(240,240,240,0.5);
}

.hdf-plan-features {
  list-style: none;
}

.hdf-plan-features li {
  font-size: 0.9rem;
  color: rgba(240,240,240,0.75);
  padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  padding-left: 20px;
  position: relative;
}

.hdf-plan-features li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--hdf-cyber-cyan);
}

/* ============================================================
   15. 影片征集
   ============================================================ */
#hdf-film-submission {
  padding: var(--hdf-space-xl) 0;
  background: var(--hdf-midnight-blue);
}

.hdf-submission-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--hdf-space-md);
}

.hdf-submission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  margin-top: 40px;
}

.hdf-wanted-img {
  width: 100%;
  border: 3px solid var(--hdf-link-yellow);
  box-shadow: 0 0 20px rgba(255, 255, 0, 0.2);
  filter: sepia(0.3) contrast(1.1);
}

.hdf-submission-form {
  background: rgba(26, 5, 51, 0.6);
  border: 2px solid rgba(255, 255, 0, 0.2);
  padding: 32px;
}

/* ============================================================
   16. APP下载
   ============================================================ */
#hdf-app-download {
  padding: var(--hdf-space-xl) 0;
  background: linear-gradient(180deg, #1a0533 0%, #0d0221 100%);
}

.hdf-app-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--hdf-space-md);
  text-align: center;
}

.hdf-app-img {
  width: 300px;
  height: 300px;
  object-fit: contain;
  margin: 0 auto 32px;
  image-rendering: pixelated;
  filter: drop-shadow(0 0 20px var(--hdf-neon-pink));
}

.hdf-app-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.hdf-app-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(26, 5, 51, 0.8);
  border: 2px solid var(--hdf-cyber-cyan);
  padding: 14px 24px;
  color: var(--hdf-text-light);
  text-decoration: none;
  transition: all var(--hdf-transition);
  min-width: 180px;
}

.hdf-app-btn:hover {
  background: var(--hdf-cyber-cyan);
  color: var(--hdf-midnight-blue);
  box-shadow: 0 0 20px var(--hdf-cyber-cyan);
  text-shadow: none;
}

.hdf-app-btn-icon {
  font-size: 1.5rem;
}

.hdf-app-btn-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.hdf-app-btn-label {
  font-size: 0.75rem;
  opacity: 0.7;
}

.hdf-app-btn-store {
  font-family: var(--hdf-font-pixel);
  font-size: 0.5rem;
}

/* ============================================================
   17. 关于影院
   ============================================================ */
#hdf-about {
  padding: var(--hdf-space-xl) 0;
  background: var(--hdf-midnight-blue);
}

.hdf-about-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--hdf-space-md);
}

.hdf-about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-top: 40px;
}

.hdf-about-img {
  width: 100%;
  border: 3px solid rgba(0, 255, 255, 0.3);
  box-shadow: 0 0 30px rgba(0, 255, 255, 0.1);
  filter: sepia(0.2) contrast(1.05);
}

.hdf-about-text h3 {
  font-family: var(--hdf-font-pixel);
  font-size: 0.7rem;
  color: var(--hdf-cyber-cyan);
  margin-bottom: 20px;
}

.hdf-about-text p {
  font-size: 1rem;
  color: rgba(240,240,240,0.8);
  line-height: 1.9;
  margin-bottom: 16px;
}

/* ============================================================
   18. 页脚
   ============================================================ */
#hdf-footer {
  background: rgba(0, 0, 0, 0.8);
  border-top: 2px solid var(--hdf-neon-pink);
  padding: var(--hdf-space-lg) 0 var(--hdf-space-md);
}

.hdf-footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--hdf-space-md);
}

.hdf-footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--hdf-space-lg);
  margin-bottom: var(--hdf-space-lg);
}

.hdf-footer-col h4 {
  font-family: var(--hdf-font-pixel);
  font-size: 0.45rem;
  color: var(--hdf-neon-pink);
  text-shadow: 0 0 8px var(--hdf-neon-pink);
  margin-bottom: 16px;
  letter-spacing: 0.1em;
}

.hdf-footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.hdf-footer-col a {
  font-size: 0.9rem;
  color: rgba(240,240,240,0.55);
  transition: color var(--hdf-transition);
}

.hdf-footer-col a:hover {
  color: var(--hdf-cyber-cyan);
  text-shadow: 0 0 6px var(--hdf-cyber-cyan);
}

.hdf-footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--hdf-space-md);
  text-align: center;
}

.hdf-footer-license {
  font-family: var(--hdf-font-pixel);
  font-size: 0.35rem;
  color: rgba(240,240,240,0.4);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

.hdf-footer-age {
  display: inline-block;
  font-family: var(--hdf-font-pixel);
  font-size: 0.6rem;
  color: var(--hdf-midnight-blue);
  background: var(--hdf-neon-pink);
  padding: 4px 10px;
  margin-bottom: 12px;
  box-shadow: 0 0 10px var(--hdf-neon-pink);
}

.hdf-footer-copyright {
  font-size: 0.8rem;
  color: rgba(240,240,240,0.35);
}

.hdf-footer-copyright a {
  color: rgba(240,240,240,0.4);
}

.hdf-footer-copyright a:hover {
  color: var(--hdf-cyber-cyan);
}

/* ============================================================
   19. 内页通用样式
   ============================================================ */
.hdf-page-hero {
  background: linear-gradient(135deg, #1a0533 0%, #0d0221 100%);
  border-bottom: 2px solid var(--hdf-neon-pink);
  padding: 60px var(--hdf-space-md) 48px;
  text-align: center;
}

.hdf-breadcrumb {
  font-size: 0.85rem;
  color: rgba(240,240,240,0.45);
  margin-bottom: 16px;
}

.hdf-breadcrumb a {
  color: var(--hdf-cyber-cyan);
}

.hdf-page-hero h1 {
  font-family: var(--hdf-font-pixel);
  font-size: clamp(0.7rem, 2.5vw, 1.2rem);
  color: var(--hdf-neon-pink);
  text-shadow: 0 0 15px var(--hdf-neon-pink);
  margin-bottom: 12px;
}

.hdf-page-hero p {
  font-size: 1rem;
  color: rgba(240,240,240,0.6);
}

/* 文章正文 */
.hdf-article-body {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--hdf-space-xl) var(--hdf-space-md);
}

.hdf-article-body h2 {
  font-family: var(--hdf-font-pixel);
  font-size: 0.65rem;
  color: var(--hdf-cyber-cyan);
  margin-bottom: 16px;
  margin-top: 40px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(0,255,255,0.2);
}

.hdf-article-body h2:first-child {
  margin-top: 0;
}

.hdf-article-body p {
  font-size: 1rem;
  color: rgba(240,240,240,0.8);
  line-height: 1.9;
  margin-bottom: 16px;
}

.hdf-article-body blockquote {
  border-left: 3px solid var(--hdf-neon-pink);
  padding: 16px 24px;
  margin: 24px 0;
  background: rgba(255,0,255,0.05);
  font-style: italic;
  color: rgba(240,240,240,0.7);
}

.hdf-article-body a {
  color: var(--hdf-link-yellow);
  text-decoration: underline;
}

/* 通用工具类 */
.hdf-text-center { text-align: center; }
.hdf-mt-20 { margin-top: 20px; }

/* ============================================================
   20. 响应式断点
   ============================================================ */

/* ---- 360px (超小屏手机) ---- */
@media (max-width: 360px) {
  .hdf-nav-menu { display: none; }
  .hdf-hamburger { display: flex; }
  .hdf-logo-text { display: none; }

  .hdf-hero-title { font-size: 0.7rem; }
  .hdf-hero-slogan { font-size: 0.35rem; }

  .hdf-card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .hdf-vip-grid,
  .hdf-submission-grid,
  .hdf-about-grid { grid-template-columns: 1fr; gap: 24px; }

  .hdf-footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .hdf-app-buttons { flex-direction: column; align-items: center; }
}

/* ---- 768px (平板) ---- */
@media (max-width: 768px) {
  .hdf-nav-menu { display: none; }
  .hdf-hamburger { display: flex; }

  .hdf-hero-title { font-size: clamp(0.8rem, 3vw, 1.5rem); }

  .hdf-card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .hdf-vip-grid,
  .hdf-submission-grid,
  .hdf-about-grid { grid-template-columns: 1fr; gap: 32px; }

  .hdf-footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }

  .hdf-guestbook-form { padding: var(--hdf-space-md); }

  .hdf-section { padding: 60px var(--hdf-space-sm); }
  #hdf-hero { min-height: 70vh; }
}

/* ---- 1024px (小型桌面) ---- */
@media (max-width: 1024px) {
  .hdf-nav-menu a { font-size: 0.38rem; padding: 8px 10px; }

  .hdf-card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .hdf-vip-grid,
  .hdf-submission-grid,
  .hdf-about-grid { gap: 32px; }
}

/* ---- 1440px (大屏) ---- */
@media (min-width: 1440px) {
  .hdf-card-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* ============================================================
   21. 无障碍与打印
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

:focus-visible {
  outline: 2px solid var(--hdf-cyber-cyan);
  outline-offset: 2px;
}

@media print {
  #hdf-loader,
  #hdf-mobile-menu,
  .hdf-hamburger,
  .retro-jammer-block { display: none !important; }

  body { background: white; color: black; }
}