/* =================================================================
   BBi-0329 甜心影院 · 设计系统 style.css
   视觉概念：甜心星空影院 —— 深紫夜空 + 玫红霓虹光晕 + 玻璃拟态
   ================================================================= */

/* ---------- 设计令牌 Design Tokens ---------- */
:root {
  /* 主色板：深紫夜空底 + 玫红霓虹 */
  --bg-deep:        #160a26;
  --bg-night:       #1d1036;
  --bg-card:        rgba(255, 255, 255, 0.045);
  --bg-card-hover:  rgba(255, 255, 255, 0.075);
  --bg-elevated:    rgba(35, 18, 64, 0.72);

  /* 强调色 */
  --pink-main:      #ff5e8a;
  --pink-soft:      #ff8fb1;
  --pink-glow:      rgba(255, 94, 138, 0.45);
  --purple-main:    #9d6bff;
  --purple-glow:    rgba(157, 107, 255, 0.40);
  --amber:          #ffc857;

  /* 文字 */
  --text-primary:   #f5eefe;
  --text-secondary:  #b8a8d4;
  --text-muted:      #7d6ba0;

  /* 边框 */
  --border-glass:   rgba(255, 255, 255, 0.10);
  --border-strong:  rgba(255, 94, 138, 0.35);

  /* 渐变 */
  --grad-pink:      linear-gradient(135deg, #ff5e8a 0%, #ff8fb1 100%);
  --grad-purple:    linear-gradient(135deg, #9d6bff 0%, #ff5e8a 100%);
  --grad-hero:      linear-gradient(160deg, #ff5e8a 0%, #ff7eb3 40%, #9d6bff 100%);
  --grad-text:      linear-gradient(120deg, #ff8fb1 0%, #ffc857 50%, #ff5e8a 100%);

  /* 字体 */
  --font-display:   'ZCOOL KuaiLe', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body:      'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;

  /* 圆角与阴影 */
  --radius-sm: 10px;
  --radius:    18px;
  --radius-lg: 28px;
  --radius-pill: 999px;
  --shadow-glow:    0 8px 32px rgba(255, 94, 138, 0.25);
  --shadow-card:    0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-float:   0 12px 48px rgba(0, 0, 0, 0.45);

  /* 间距 */
  --space-section: clamp(60px, 8vw, 110px);
  --container-max: 1200px;
}

/* ---------- 重置 Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; }
:focus-visible { outline: 2px solid var(--pink-main); outline-offset: 3px; border-radius: 4px; }

/* ---------- 星空背景 Starfield ---------- */
.starfield {
  position: fixed; inset: 0; z-index: -2; overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(157, 107, 255, 0.18), transparent 60%),
    radial-gradient(ellipse 70% 50% at 85% 15%, rgba(255, 94, 138, 0.16), transparent 55%),
    radial-gradient(ellipse 90% 70% at 50% 100%, rgba(157, 107, 255, 0.10), transparent 65%),
    linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-night) 100%);
}
.starfield::before, .starfield::after {
  content: ''; position: absolute; inset: -50%;
  background-image:
    radial-gradient(1.5px 1.5px at 20% 30%, #fff, transparent),
    radial-gradient(1px 1px at 40% 70%, rgba(255,255,255,0.7), transparent),
    radial-gradient(1.5px 1.5px at 60% 20%, #fff, transparent),
    radial-gradient(1px 1px at 80% 50%, rgba(255,255,255,0.6), transparent),
    radial-gradient(2px 2px at 30% 80%, #fff, transparent),
    radial-gradient(1px 1px at 70% 90%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1.5px 1.5px at 90% 35%, #fff, transparent),
    radial-gradient(1px 1px at 10% 55%, rgba(255,255,255,0.7), transparent);
  background-size: 400px 400px;
  animation: twinkle 8s ease-in-out infinite alternate;
  opacity: 0.6;
}
.starfield::after {
  background-size: 250px 250px;
  animation-delay: -4s;
  opacity: 0.35;
}
@keyframes twinkle {
  0%   { transform: translateY(0); opacity: 0.4; }
  100% { transform: translateY(-30px); opacity: 0.75; }
}

/* 浮动光斑装饰 */
.orb {
  position: fixed; border-radius: 50%; filter: blur(80px); z-index: -1;
  pointer-events: none; opacity: 0.5;
}
.orb-1 { width: 400px; height: 400px; top: -100px; right: -80px;
  background: radial-gradient(circle, var(--pink-glow), transparent 70%);
  animation: float 14s ease-in-out infinite; }
.orb-2 { width: 350px; height: 350px; bottom: -100px; left: -80px;
  background: radial-gradient(circle, var(--purple-glow), transparent 70%);
  animation: float 16s ease-in-out infinite reverse; }
@keyframes float {
  0%,100% { transform: translate(0,0); }
  50%     { transform: translate(40px, 30px); }
}

/* ---------- 容器 ---------- */
.container {
  width: 100%; max-width: var(--container-max);
  margin: 0 auto; padding: 0 24px;
}

/* ---------- 导航 Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 16px 0;
  transition: all 0.35s ease;
  background: linear-gradient(180deg, rgba(22,10,38,0.85), rgba(22,10,38,0.4));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav.scrolled {
  padding: 10px 0;
  background: rgba(22, 10, 38, 0.92);
  border-bottom: 1px solid var(--border-glass);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--container-max); margin: 0 auto; padding: 0 24px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-size: 24px;
  letter-spacing: 0.5px;
}
.brand-logo {
  width: 40px; height: 40px; border-radius: 12px;
  background: var(--grad-hero);
  display: grid; place-items: center;
  font-size: 20px; color: #fff;
  box-shadow: 0 0 20px var(--pink-glow);
}
.brand-name {
  background: var(--grad-text);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-link {
  padding: 8px 16px; border-radius: var(--radius-pill);
  font-size: 15px; color: var(--text-secondary);
  transition: all 0.25s ease; position: relative;
}
.nav-link:hover { color: var(--text-primary); background: var(--bg-card); }
.nav-link.active {
  color: #fff;
  background: linear-gradient(135deg, var(--pink-main), var(--purple-main));
  box-shadow: var(--shadow-glow);
}
.nav-cta {
  padding: 10px 22px; border-radius: var(--radius-pill);
  font-size: 15px; font-weight: 700; color: #fff;
  background: var(--grad-pink);
  box-shadow: 0 4px 16px var(--pink-glow);
  transition: transform 0.25s, box-shadow 0.25s;
  white-space: nowrap;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 28px var(--pink-glow); }

.nav-toggle {
  display: none; width: 44px; height: 44px; border-radius: 12px;
  background: var(--bg-card); border: 1px solid var(--border-glass);
  align-items: center; justify-content: center;
}
.nav-toggle span {
  display: block; width: 20px; height: 2px; background: var(--text-primary);
  border-radius: 2px; position: relative; transition: 0.3s;
}
.nav-toggle span::before, .nav-toggle span::after {
  content: ''; position: absolute; left: 0; width: 20px; height: 2px;
  background: var(--text-primary); border-radius: 2px; transition: 0.3s;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after  { top: 6px; }
.nav-toggle.open span { background: transparent; }
.nav-toggle.open span::before { top: 0; transform: rotate(45deg); }
.nav-toggle.open span::after  { top: 0; transform: rotate(-45deg); }

/* ---------- 按钮 Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 30px; border-radius: var(--radius-pill);
  font-size: 16px; font-weight: 700; cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  white-space: nowrap;
}
.btn-primary {
  color: #fff; background: var(--grad-pink);
  box-shadow: 0 6px 24px var(--pink-glow);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px var(--pink-glow); }
.btn-secondary {
  color: var(--text-primary); background: var(--bg-card);
  border: 1px solid var(--border-glass);
}
.btn-secondary:hover { background: var(--bg-card-hover); border-color: var(--border-strong); transform: translateY(-3px); }
.btn-ghost {
  color: var(--pink-soft); background: transparent;
  border: 1px solid var(--border-strong);
}
.btn-ghost:hover { background: var(--pink-glow); color: #fff; }
.btn-lg { padding: 18px 40px; font-size: 18px; }
.btn-sm { padding: 10px 20px; font-size: 14px; }

/* ---------- 通用排版 ---------- */
.section { padding: var(--space-section) 0; }
.section-head { max-width: 680px; margin-bottom: 50px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-block; padding: 6px 16px; border-radius: var(--radius-pill);
  font-size: 13px; font-weight: 700; letter-spacing: 1px;
  color: var(--pink-soft); background: rgba(255, 94, 138, 0.12);
  border: 1px solid rgba(255, 94, 138, 0.25);
  margin-bottom: 18px;
}
.h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.25; margin-bottom: 16px;
}
.h2 .accent {
  background: var(--grad-text);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.lead { font-size: 17px; color: var(--text-secondary); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  padding: 120px 0 80px;
}
.hero-inner {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 18px; border-radius: var(--radius-pill);
  font-size: 14px; color: var(--text-secondary);
  background: var(--bg-card); border: 1px solid var(--border-glass);
  margin-bottom: 28px;
}
.hero-badge .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--pink-main); box-shadow: 0 0 8px var(--pink-main);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1;} 50%{opacity:0.4;} }

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.1; margin-bottom: 24px;
}
.hero h1 .gradient {
  background: var(--grad-text);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}
.hero-desc {
  font-size: 18px; color: var(--text-secondary);
  max-width: 520px; margin-bottom: 36px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 48px; }
.hero-stats { display: flex; gap: 40px; flex-wrap: wrap; }
.hero-stat .num {
  font-family: var(--font-display); font-size: 34px;
  background: var(--grad-text);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-stat .label { font-size: 14px; color: var(--text-muted); }

/* Hero 视觉卡片 */
.hero-visual { position: relative; height: 480px; }
.hero-card-main {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%,-50%) rotate(-3deg);
  width: 280px; height: 360px; border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(255,94,138,0.25), rgba(157,107,255,0.25));
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-float);
  display: grid; place-items: center;
  overflow: hidden;
}
.hero-card-main::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 30%, rgba(255,255,255,0.15), transparent 60%);
}
.hero-card-main .play-icon {
  width: 72px; height: 72px; border-radius: 50%;
  background: var(--grad-pink); display: grid; place-items: center;
  font-size: 28px; color: #fff;
  box-shadow: 0 0 40px var(--pink-glow);
  animation: pulseScale 2.5s ease-in-out infinite;
}
@keyframes pulseScale { 0%,100%{transform:scale(1);} 50%{transform:scale(1.12);} }
.hero-card-main .card-label {
  position: absolute; bottom: 24px; left: 0; right: 0; text-align: center;
  font-family: var(--font-display); font-size: 20px;
}
.hero-card-float {
  position: absolute; border-radius: var(--radius);
  background: var(--bg-elevated); border: 1px solid var(--border-glass);
  backdrop-filter: blur(16px); box-shadow: var(--shadow-card);
  padding: 14px 18px; display: flex; align-items: center; gap: 12px;
  animation: floatCard 5s ease-in-out infinite;
}
.hero-card-float .icon {
  width: 40px; height: 40px; border-radius: 10px;
  display: grid; place-items: center; font-size: 20px;
  background: var(--grad-purple);
}
.hero-card-float .text strong { display: block; font-size: 14px; }
.hero-card-float .text span { font-size: 12px; color: var(--text-muted); }
.hero-card-float.f1 { top: 20px; left: -30px; animation-delay: 0s; }
.hero-card-float.f2 { bottom: 40px; right: -20px; animation-delay: -2.5s; }
@keyframes floatCard { 0%,100%{transform:translateY(0);} 50%{transform:translateY(-14px);} }

/* ---------- 玻璃卡片 Glass Card ---------- */
.glass {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
}
.glass:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-strong);
  transform: translateY(-6px);
  box-shadow: var(--shadow-float);
}

/* ---------- 特性卡片 Feature ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); gap: 24px; }
.feature {
  padding: 36px 30px; border-radius: var(--radius-lg);
  position: relative; overflow: hidden;
}
.feature::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad-pink); transform: scaleX(0); transform-origin: left;
  transition: transform 0.4s ease;
}
.feature:hover::before { transform: scaleX(1); }
.feature .icon-box {
  width: 60px; height: 60px; border-radius: 16px;
  display: grid; place-items: center; font-size: 28px;
  margin-bottom: 22px;
  background: linear-gradient(135deg, rgba(255,94,138,0.2), rgba(157,107,255,0.2));
  border: 1px solid var(--border-glass);
}
.feature h3 {
  font-family: var(--font-display); font-size: 22px;
  margin-bottom: 12px;
}
.feature p { color: var(--text-secondary); font-size: 15px; }

/* ---------- 视频卡片 Video Card ---------- */
.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px,1fr)); gap: 24px; }
.video-card {
  border-radius: var(--radius-lg); overflow: hidden;
  position: relative; cursor: pointer;
}
.video-thumb {
  position: relative; aspect-ratio: 9/14;
  border-radius: var(--radius-lg); overflow: hidden;
  display: grid; place-items: center;
}
.video-thumb::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(22,10,38,0.85) 100%);
  z-index: 1;
}
.video-thumb .play-btn {
  position: relative; z-index: 2;
  width: 52px; height: 52px; border-radius: 50%;
  background: rgba(255,94,138,0.9); display: grid; place-items: center;
  font-size: 20px; color: #fff;
  backdrop-filter: blur(8px);
  transition: transform 0.3s, opacity 0.3s;
  opacity: 0;
}
.video-card:hover .play-btn { opacity: 1; transform: scale(1.1); }
.video-thumb .duration {
  position: absolute; bottom: 12px; right: 12px; z-index: 2;
  padding: 4px 10px; border-radius: var(--radius-sm);
  font-size: 12px; font-weight: 700; color: #fff;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(4px);
}
.video-thumb .tag {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  padding: 4px 10px; border-radius: var(--radius-pill);
  font-size: 11px; font-weight: 700;
  background: var(--grad-pink); color: #fff;
}
.video-info { padding: 18px 20px; }
.video-info h3 {
  font-size: 16px; font-weight: 700; margin-bottom: 8px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--text-muted); }
.video-meta .avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--grad-purple); display: grid; place-items: center;
  font-size: 12px; font-weight: 700;
}

/* 缩略图渐变背景变体 */
.thumb-g1 { background: linear-gradient(135deg, #ff5e8a, #9d6bff); }
.thumb-g2 { background: linear-gradient(135deg, #9d6bff, #ffc857); }
.thumb-g3 { background: linear-gradient(135deg, #ff8fb1, #ffc857); }
.thumb-g4 { background: linear-gradient(135deg, #ff5e8a, #ffc857); }
.thumb-g5 { background: linear-gradient(135deg, #6b5cff, #ff8fb1); }
.thumb-g6 { background: linear-gradient(135deg, #ff7eb3, #9d6bff); }

/* ---------- 筛选 Chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 40px; }
.chip {
  padding: 10px 22px; border-radius: var(--radius-pill);
  font-size: 14px; font-weight: 600; color: var(--text-secondary);
  background: var(--bg-card); border: 1px solid var(--border-glass);
  transition: all 0.25s ease;
}
.chip:hover { color: var(--text-primary); border-color: var(--border-strong); }
.chip.active {
  color: #fff; background: var(--grad-pink);
  border-color: transparent;
  box-shadow: 0 4px 16px var(--pink-glow);
}

/* ---------- 数据统计 Stats ---------- */
.stats-band {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); gap: 30px;
  padding: 48px 40px; border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(255,94,138,0.10), rgba(157,107,255,0.10));
  border: 1px solid var(--border-glass);
}
.stat-item { text-align: center; }
.stat-item .num {
  font-family: var(--font-display); font-size: 44px;
  background: var(--grad-text);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
}
.stat-item .label { font-size: 15px; color: var(--text-secondary); margin-top: 6px; }

/* ---------- CTA 区块 ---------- */
.cta-band {
  position: relative; overflow: hidden;
  padding: 64px 48px; border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(255,94,138,0.18), rgba(157,107,255,0.18));
  border: 1px solid var(--border-glass);
  text-align: center;
}
.cta-band::before {
  content: ''; position: absolute; top: -50%; left: -10%;
  width: 60%; height: 200%;
  background: radial-gradient(ellipse, var(--pink-glow), transparent 70%);
  filter: blur(40px);
}
.cta-band h2 {
  font-family: var(--font-display); font-size: clamp(26px, 4vw, 40px);
  margin-bottom: 16px; position: relative;
}
.cta-band p { color: var(--text-secondary); margin-bottom: 32px; position: relative; }
.cta-band .btn { position: relative; }

/* ---------- 页面横幅 Page Banner ---------- */
.page-banner {
  padding: 150px 0 60px; text-align: center;
  position: relative;
}
.page-banner h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 56px);
  margin-bottom: 18px;
}
.page-banner h1 .gradient {
  background: var(--grad-text);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.page-banner p { color: var(--text-secondary); font-size: 17px; max-width: 600px; margin: 0 auto; }
.breadcrumb {
  display: flex; justify-content: center; gap: 8px;
  font-size: 14px; color: var(--text-muted); margin-bottom: 24px;
}
.breadcrumb a:hover { color: var(--pink-soft); }

/* ---------- 播放器 Player ---------- */
.player-wrap {
  border-radius: var(--radius-lg); overflow: hidden;
  position: relative; aspect-ratio: 16/9;
  background: linear-gradient(135deg, #2a1652, #1d1036);
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-float);
}
.player-wrap .player-bg {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,94,138,0.2), rgba(157,107,255,0.2));
}
.player-wrap .player-center {
  position: relative; z-index: 2;
  height: 100%; display: grid; place-items: center;
}
.player-wrap .big-play {
  width: 96px; height: 96px; border-radius: 50%;
  background: var(--grad-pink); display: grid; place-items: center;
  font-size: 36px; color: #fff;
  box-shadow: 0 0 60px var(--pink-glow);
  transition: transform 0.3s; cursor: pointer;
}
.player-wrap .big-play:hover { transform: scale(1.1); }
.player-controls {
  position: absolute; bottom: 0; left: 0; right: 0; z-index: 3;
  padding: 16px 20px;
  background: linear-gradient(180deg, transparent, rgba(0,0,0,0.7));
  display: flex; align-items: center; gap: 14px;
}
.player-controls .ctrl-btn {
  width: 40px; height: 40px; border-radius: 50%;
  display: grid; place-items: center; font-size: 16px; color: #fff;
  background: rgba(255,255,255,0.1); transition: background 0.2s;
}
.player-controls .ctrl-btn:hover { background: rgba(255,255,255,0.2); }
.player-progress {
  flex: 1; height: 5px; border-radius: 3px;
  background: rgba(255,255,255,0.2); cursor: pointer; position: relative;
}
.player-progress .filled {
  height: 100%; border-radius: 3px; background: var(--grad-pink);
  width: 35%;
}
.player-progress .knob {
  position: absolute; top: 50%; left: 35%; transform: translate(-50%,-50%);
  width: 14px; height: 14px; border-radius: 50%; background: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.player-time { font-size: 13px; color: rgba(255,255,255,0.8); min-width: 70px; text-align: right; }

/* 播放列表 */
.playlist { display: grid; gap: 12px; }
.playlist-item {
  display: flex; gap: 14px; padding: 12px;
  border-radius: var(--radius); cursor: pointer;
  background: var(--bg-card); border: 1px solid var(--border-glass);
  transition: all 0.25s ease;
}
.playlist-item:hover { background: var(--bg-card-hover); border-color: var(--border-strong); }
.playlist-item.active {
  background: linear-gradient(135deg, rgba(255,94,138,0.15), rgba(157,107,255,0.15));
  border-color: var(--border-strong);
}
.playlist-item .pl-thumb {
  width: 80px; height: 50px; border-radius: 8px; flex-shrink: 0;
  display: grid; place-items: center; font-size: 18px; color: #fff;
}
.playlist-item .pl-info { flex: 1; min-width: 0; }
.playlist-item .pl-info h4 {
  font-size: 14px; font-weight: 700; margin-bottom: 4px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.playlist-item .pl-info span { font-size: 12px; color: var(--text-muted); }

/* ---------- App下载页 ---------- */
.download-hero {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.download-phone {
  width: 280px; height: 560px; margin: 0 auto;
  border-radius: 40px; padding: 14px;
  background: linear-gradient(160deg, rgba(255,94,138,0.15), rgba(157,107,255,0.15));
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-float);
  position: relative;
}
.download-phone::before {
  content: ''; position: absolute; top: 14px; left: 50%; transform: translateX(-50%);
  width: 80px; height: 24px; border-radius: 12px; background: rgba(0,0,0,0.4);
}
.phone-screen {
  width: 100%; height: 100%; border-radius: 28px; overflow: hidden;
  background: linear-gradient(180deg, #1d1036, #2a1652);
  padding: 50px 20px 20px; display: flex; flex-direction: column;
  gap: 14px; align-items: center;
}
.phone-screen .ph-logo {
  width: 64px; height: 64px; border-radius: 16px;
  background: var(--grad-hero); display: grid; place-items: center;
  font-size: 28px; box-shadow: 0 0 24px var(--pink-glow);
}
.phone-screen .ph-title { font-family: var(--font-display); font-size: 22px; }
.phone-screen .ph-sub { font-size: 12px; color: var(--text-muted); }
.phone-screen .ph-btn {
  margin-top: 10px; padding: 12px 28px; border-radius: var(--radius-pill);
  background: var(--grad-pink); color: #fff; font-weight: 700; font-size: 14px;
}
.download-stores { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.store-btn {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 22px; border-radius: var(--radius);
  background: var(--bg-card); border: 1px solid var(--border-glass);
  transition: all 0.25s;
}
.store-btn:hover { background: var(--bg-card-hover); border-color: var(--border-strong); transform: translateY(-2px); }
.store-btn .store-icon { font-size: 26px; }
.store-btn .store-text small { display: block; font-size: 11px; color: var(--text-muted); }
.store-btn .store-text strong { font-size: 16px; }

/* 功能特性列表 */
.feature-list-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px,1fr)); gap: 28px; }
.feature-list-item {
  display: flex; gap: 18px; padding: 28px; border-radius: var(--radius-lg);
}
.feature-list-item .fl-icon {
  width: 52px; height: 52px; border-radius: 14px; flex-shrink: 0;
  display: grid; place-items: center; font-size: 24px;
  background: linear-gradient(135deg, rgba(255,94,138,0.2), rgba(157,107,255,0.2));
  border: 1px solid var(--border-glass);
}
.feature-list-item h3 { font-family: var(--font-display); font-size: 20px; margin-bottom: 8px; }
.feature-list-item p { color: var(--text-secondary); font-size: 14px; }

/* ---------- 主播卡片 Streamer ---------- */
.streamer-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px,1fr)); gap: 24px; }
.streamer-card {
  border-radius: var(--radius-lg); padding: 28px 20px; text-align: center;
  position: relative; overflow: hidden;
}
.streamer-card .streamer-avatar {
  width: 96px; height: 96px; border-radius: 50%; margin: 0 auto 16px;
  display: grid; place-items: center; font-size: 38px;
  border: 3px solid var(--border-glass);
  box-shadow: 0 0 24px var(--pink-glow);
}
.streamer-card h3 { font-family: var(--font-display); font-size: 20px; margin-bottom: 6px; }
.streamer-card .streamer-tag {
  font-size: 12px; color: var(--pink-soft); margin-bottom: 14px;
}
.streamer-card .streamer-stats {
  display: flex; justify-content: center; gap: 20px; margin-bottom: 18px;
}
.streamer-card .streamer-stats span { font-size: 13px; color: var(--text-secondary); }
.streamer-card .streamer-stats strong { color: var(--text-primary); display: block; font-size: 16px; }
.live-dot {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  background: #ff4757; margin-right: 6px; animation: pulse 1.5s infinite;
}

/* ---------- 步骤 Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 24px; }
.step {
  padding: 32px 26px; border-radius: var(--radius-lg); text-align: center;
  position: relative;
}
.step .step-num {
  width: 48px; height: 48px; border-radius: 50%; margin: 0 auto 18px;
  display: grid; place-items: center; font-family: var(--font-display);
  font-size: 22px; color: #fff;
  background: var(--grad-pink); box-shadow: 0 4px 16px var(--pink-glow);
}
.step h3 { font-family: var(--font-display); font-size: 20px; margin-bottom: 10px; }
.step p { color: var(--text-secondary); font-size: 14px; }

/* ---------- FAQ ---------- */
.faq-item {
  padding: 24px 28px; border-radius: var(--radius); margin-bottom: 14px;
  cursor: pointer; transition: all 0.3s;
}
.faq-item:hover { background: var(--bg-card-hover); }
.faq-item.open { border-color: var(--border-strong); }
.faq-q {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 16px; font-weight: 700; gap: 16px;
}
.faq-q .faq-icon {
  width: 28px; height: 28px; border-radius: 50%; flex-shrink: 0;
  display: grid; place-items: center; font-size: 16px;
  background: var(--bg-card); transition: transform 0.3s;
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--pink-glow); }
.faq-a {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease;
  color: var(--text-secondary); font-size: 15px;
}
.faq-item.open .faq-a { max-height: 200px; margin-top: 14px; }

/* ---------- 弹窗 Modal ---------- */
.modal-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(10, 4, 20, 0.8); backdrop-filter: blur(8px);
  display: none; align-items: center; justify-content: center;
  padding: 20px; opacity: 0; transition: opacity 0.3s;
}
.modal-overlay.open { display: flex; opacity: 1; }
.modal {
  background: var(--bg-elevated); border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg); padding: 40px; max-width: 440px; width: 100%;
  text-align: center; position: relative;
  box-shadow: var(--shadow-float);
  animation: modalIn 0.35s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes modalIn { from { transform: scale(0.85); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.modal .modal-close {
  position: absolute; top: 16px; right: 16px;
  width: 36px; height: 36px; border-radius: 50%;
  display: grid; place-items: center; font-size: 18px;
  background: var(--bg-card); color: var(--text-secondary);
}
.modal .modal-close:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.modal .modal-icon {
  width: 72px; height: 72px; border-radius: 20px; margin: 0 auto 20px;
  display: grid; place-items: center; font-size: 32px;
  background: var(--grad-purple); box-shadow: 0 0 32px var(--purple-glow);
}
.modal h3 { font-family: var(--font-display); font-size: 24px; margin-bottom: 12px; }
.modal p { color: var(--text-secondary); margin-bottom: 28px; }

/* ---------- 回到顶部 ---------- */
.back-top {
  position: fixed; bottom: 30px; right: 30px; z-index: 90;
  width: 48px; height: 48px; border-radius: 50%;
  display: grid; place-items: center; font-size: 20px; color: #fff;
  background: var(--grad-pink); box-shadow: var(--shadow-glow);
  opacity: 0; pointer-events: none; transition: all 0.3s;
}
.back-top.show { opacity: 1; pointer-events: auto; }
.back-top:hover { transform: translateY(-4px); }

/* ---------- 滚动显现动画 ---------- */
.reveal { opacity: 0; transform: translateY(40px); transition: all 0.7s cubic-bezier(0.4,0,0.2,1); }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }
.reveal[data-delay="3"] { transition-delay: 0.3s; }
.reveal[data-delay="4"] { transition-delay: 0.4s; }
.reveal[data-delay="5"] { transition-delay: 0.5s; }

/* ---------- 页脚 Footer ---------- */
.footer {
  margin-top: 80px; padding: 60px 0 30px;
  border-top: 1px solid var(--border-glass);
  background: rgba(22,10,38,0.6); backdrop-filter: blur(12px);
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
  margin-bottom: 48px;
}
.footer-brand p { color: var(--text-secondary); font-size: 14px; margin-top: 16px; max-width: 300px; }
.footer-col h4 { font-family: var(--font-display); font-size: 16px; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { font-size: 14px; color: var(--text-secondary); transition: color 0.2s; }
.footer-col ul li a:hover { color: var(--pink-soft); }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
  width: 40px; height: 40px; border-radius: 12px;
  display: grid; place-items: center; font-size: 18px;
  background: var(--bg-card); border: 1px solid var(--border-glass);
  transition: all 0.25s;
}
.footer-social a:hover { background: var(--grad-pink); transform: translateY(-3px); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px; border-top: 1px solid var(--border-glass);
  font-size: 13px; color: var(--text-muted); flex-wrap: wrap; gap: 12px;
}
.footer-bottom a:hover { color: var(--pink-soft); }

/* ---------- 响应式 Responsive ---------- */
@media (max-width: 968px) {
  .hero-inner, .download-hero { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { height: 380px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .watch-layout { grid-template-columns: 1fr !important; }
}
@media (max-width: 768px) {
  .nav-links {
    position: fixed; top: 0; right: -100%;
    width: 280px; height: 100vh; padding: 80px 24px 24px;
    flex-direction: column; align-items: stretch; gap: 8px;
    background: rgba(22,10,38,0.97); backdrop-filter: blur(20px);
    border-left: 1px solid var(--border-glass);
    transition: right 0.35s cubic-bezier(0.4,0,0.2,1);
    z-index: 99;
  }
  .nav-links.open { right: 0; }
  .nav-link { padding: 14px 18px; font-size: 16px; }
  .nav-cta { width: 100%; text-align: center; margin-top: 12px; }
  .nav-toggle { display: flex; }
  .hero { padding: 110px 0 60px; }
  .hero-stats { gap: 24px; }
  .hero-stat .num { font-size: 28px; }
  .section { padding: 60px 0; }
  .cta-band { padding: 40px 24px; }
  .stats-band { padding: 32px 20px; gap: 24px; }
  .download-phone { width: 240px; height: 480px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .back-top { bottom: 20px; right: 20px; }
  .modal { padding: 32px 24px; }
  .feature, .feature-list-item { padding: 24px; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .download-stores { flex-direction: column; }
  .store-btn { width: 100%; justify-content: center; }
  .hero-card-float { display: none; }
}