/**
 * 蘑菇视频 - 原创样式表
 * 配色：极速粉红 #FF2E93 + 流光绿 #10B981 + 赛道碳黑 #0B0F19
 * ffjjze9.cn
 */

/* ===== CSS变量 ===== */
:root {
  --clr-primary:   #FF2E93;
  --clr-secondary: #10B981;
  --clr-bg:        #0B0F19;
  --clr-bg2:       #111827;
  --clr-bg3:       #1F2937;
  --clr-text:      #F3F4F6;
  --clr-muted:     #9CA3AF;
  --clr-border:    #374151;
  --clr-card:      #161D2F;
  --grad-main:     linear-gradient(135deg, #FF2E93 0%, #10B981 100%);
  --grad-dark:     linear-gradient(180deg, #0B0F19 0%, #111827 100%);
  --shadow-glow:   0 0 20px rgba(255,46,147,0.35);
  --shadow-card:   0 4px 24px rgba(0,0,0,0.5);
  --radius:        12px;
  --radius-sm:     8px;
  --transition:    0.3s ease;
  --font-main:     'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
}

/* ===== 重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-main);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-primary); border-radius: 3px; }

/* ===== 容器 ===== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }

/* ===== 标题 ===== */
.section-head { text-align: center; margin-bottom: 52px; }
.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--clr-text);
  position: relative;
  display: inline-block;
}
.section-head h2 .brand-accent { color: var(--clr-primary); }
.section-head h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--grad-main);
  border-radius: 2px;
  margin: 12px auto 0;
}
.section-head p { color: var(--clr-muted); margin-top: 12px; font-size: 0.95rem; }

/* ===== 顶部公告栏 ===== */
.top-bar {
  background: var(--grad-main);
  padding: 8px 0;
  text-align: center;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.5px;
}
.top-bar a { color: #fff; opacity: 0.9; }
.top-bar a:hover { opacity: 1; text-decoration: underline; }

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 15, 25, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
  transition: background var(--transition);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 16px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-logo img.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
}
.nav-logo img.logo-full {
  height: 36px;
  width: auto;
}
.nav-logo .brand-name {
  font-size: 1.2rem;
  font-weight: 700;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-menu a {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-muted);
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-menu a:hover,
.nav-menu a.active {
  color: var(--clr-primary);
  background: rgba(255,46,147,0.1);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.btn-search-toggle {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--clr-bg3);
  color: var(--clr-muted);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  transition: all var(--transition);
}
.btn-search-toggle:hover { background: var(--clr-primary); color: #fff; }
.btn-join {
  padding: 8px 20px;
  background: var(--grad-main);
  color: #fff;
  border-radius: 20px;
  font-size: 0.88rem;
  font-weight: 600;
  transition: opacity var(--transition);
}
.btn-join:hover { opacity: 0.85; }
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  cursor: pointer;
}
.nav-hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===== 搜索框 ===== */
.search-bar-wrap {
  background: var(--clr-bg2);
  border-bottom: 1px solid var(--clr-border);
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.search-bar-wrap.open { max-height: 80px; padding: 12px 0; }
.search-bar-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 640px;
  margin: 0 auto;
  padding: 0 24px;
}
.search-bar-inner input {
  flex: 1;
  background: var(--clr-bg3);
  border: 1px solid var(--clr-border);
  border-radius: 24px;
  padding: 10px 20px;
  color: var(--clr-text);
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition);
}
.search-bar-inner input:focus { border-color: var(--clr-primary); }
.search-bar-inner input::placeholder { color: var(--clr-muted); }
.btn-search-submit {
  padding: 10px 24px;
  background: var(--grad-main);
  color: #fff;
  border-radius: 24px;
  font-size: 0.88rem;
  font-weight: 600;
  transition: opacity var(--transition);
}
.btn-search-submit:hover { opacity: 0.85; }

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 14px 0;
  border-bottom: 1px solid var(--clr-border);
  background: var(--clr-bg2);
}
.breadcrumb ol {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  font-size: 0.84rem;
  color: var(--clr-muted);
}
.breadcrumb li + li::before { content: '/'; margin-right: 6px; }
.breadcrumb a { color: var(--clr-primary); }
.breadcrumb a:hover { text-decoration: underline; }

/* ===== Hero Banner ===== */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.45);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11,15,25,0.9) 40%, rgba(11,15,25,0.3) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,46,147,0.15);
  border: 1px solid rgba(255,46,147,0.4);
  color: var(--clr-primary);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}
.hero h1 .hl { color: var(--clr-primary); }
.hero p {
  font-size: 1.05rem;
  color: var(--clr-muted);
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  padding: 14px 32px;
  background: var(--grad-main);
  color: #fff;
  border-radius: 28px;
  font-size: 0.95rem;
  font-weight: 700;
  box-shadow: var(--shadow-glow);
  transition: transform var(--transition), opacity var(--transition);
}
.btn-primary:hover { transform: translateY(-2px); opacity: 0.9; }
.btn-outline {
  padding: 13px 28px;
  border: 2px solid var(--clr-primary);
  color: var(--clr-primary);
  border-radius: 28px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition);
}
.btn-outline:hover { background: var(--clr-primary); color: #fff; }
.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.hero-stat { text-align: left; }
.hero-stat .num {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-stat .lbl { font-size: 0.8rem; color: var(--clr-muted); }

/* ===== 视频卡片 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: var(--clr-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}
.video-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(0,0,0,0.6); }
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--clr-bg3);
}
.video-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.08); }
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: opacity var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.video-play-btn .play-circle {
  width: 58px; height: 58px;
  background: var(--clr-primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 24px rgba(255,46,147,0.7);
  transform: scale(0.8);
  transition: transform var(--transition);
}
.video-card:hover .play-circle { transform: scale(1); }
.play-circle svg { width: 22px; height: 22px; fill: #fff; margin-left: 3px; }
.video-duration {
  position: absolute;
  bottom: 8px; right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.78rem;
  font-weight: 600;
}
.video-tag {
  position: absolute;
  top: 10px; left: 10px;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}
.tag-hot { background: var(--clr-primary); color: #fff; }
.tag-new { background: var(--clr-secondary); color: #fff; }
.tag-ai { background: #6366F1; color: #fff; }
.tag-mv { background: #F59E0B; color: #000; }
.video-info { padding: 16px; }
.video-info h3 {
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--clr-muted);
}
.video-author { display: flex; align-items: center; gap: 6px; }
.video-author img {
  width: 22px; height: 22px;
  border-radius: 50%;
  object-fit: cover;
}
.video-stats { display: flex; gap: 12px; }
.video-stats span { display: flex; align-items: center; gap: 4px; }

/* ===== 标签筛选 ===== */
.tag-filter-wrap {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.tag-btn {
  padding: 7px 18px;
  border-radius: 20px;
  border: 1px solid var(--clr-border);
  color: var(--clr-muted);
  font-size: 0.85rem;
  transition: all var(--transition);
  background: var(--clr-card);
}
.tag-btn:hover,
.tag-btn.active {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: rgba(255,46,147,0.1);
}

/* ===== 功能模块卡片 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--grad-main);
  transform: scaleX(0);
  transition: transform var(--transition);
}
.feature-card:hover { border-color: var(--clr-primary); transform: translateY(-4px); }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
}
.fi-pink { background: rgba(255,46,147,0.15); }
.fi-green { background: rgba(16,185,129,0.15); }
.fi-purple { background: rgba(99,102,241,0.15); }
.fi-gold { background: rgba(245,158,11,0.15); }
.fi-blue { background: rgba(59,130,246,0.15); }
.fi-orange { background: rgba(249,115,22,0.15); }
.feature-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 0.85rem; color: var(--clr-muted); line-height: 1.6; }

/* ===== 娱乐专区 ===== */
.entertain-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.entertain-card {
  background: var(--clr-card);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/3;
  cursor: pointer;
}
.entertain-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.entertain-card:hover img { transform: scale(1.06); }
.entertain-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(11,15,25,0.85) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
}
.entertain-overlay h3 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.entertain-overlay p { font-size: 0.8rem; color: var(--clr-muted); }
.entertain-badge {
  position: absolute;
  top: 12px; right: 12px;
  background: var(--clr-primary);
  color: #fff;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 700;
}

/* ===== AI赋能 ===== */
.ai-section { background: var(--clr-bg2); }
.ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.ai-visual {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
}
.ai-visual img { border-radius: var(--radius); }
.ai-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px solid transparent;
  border-radius: var(--radius);
  background: var(--grad-main) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
}
.ai-features { display: flex; flex-direction: column; gap: 20px; }
.ai-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: var(--clr-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border);
  transition: border-color var(--transition);
}
.ai-item:hover { border-color: var(--clr-secondary); }
.ai-item-icon {
  width: 44px; height: 44px;
  background: rgba(16,185,129,0.15);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.ai-item h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 4px; }
.ai-item p { font-size: 0.83rem; color: var(--clr-muted); }

/* ===== 社区功能 ===== */
.community-section { background: var(--clr-bg); }
.community-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.community-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition);
}
.community-card:hover {
  border-color: var(--clr-primary);
  box-shadow: 0 8px 32px rgba(255,46,147,0.2);
  transform: translateY(-4px);
}
.community-card .cc-icon {
  font-size: 2.4rem;
  margin-bottom: 14px;
  display: block;
}
.community-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.community-card p { font-size: 0.83rem; color: var(--clr-muted); line-height: 1.6; }
.community-banner-img {
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 40px;
}
.community-banner-img img { width: 100%; height: 300px; object-fit: cover; }

/* ===== 专家展示 ===== */
.experts-section { background: var(--clr-bg2); }
.experts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: all var(--transition);
}
.expert-card:hover { border-color: var(--clr-primary); transform: translateY(-4px); }
.expert-avatar-wrap {
  width: 88px; height: 88px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--grad-main);
  padding: 3px;
}
.expert-avatar-inner {
  width: 100%; height: 100%;
  border-radius: 50%;
  background: var(--clr-bg3);
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem;
  overflow: hidden;
}
.expert-name { font-size: 1.05rem; font-weight: 700; margin-bottom: 4px; }
.expert-role { font-size: 0.82rem; color: var(--clr-primary); margin-bottom: 10px; }
.expert-bio { font-size: 0.83rem; color: var(--clr-muted); line-height: 1.6; margin-bottom: 14px; }
.expert-awards { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-bottom: 16px; }
.award-tag {
  padding: 3px 10px;
  background: rgba(255,46,147,0.12);
  border: 1px solid rgba(255,46,147,0.3);
  color: var(--clr-primary);
  border-radius: 12px;
  font-size: 0.72rem;
}
.expert-btns { display: flex; gap: 10px; justify-content: center; }
.btn-sm {
  padding: 7px 16px;
  border-radius: 16px;
  font-size: 0.8rem;
  font-weight: 600;
  transition: all var(--transition);
}
.btn-sm-primary { background: var(--clr-primary); color: #fff; }
.btn-sm-primary:hover { opacity: 0.85; }
.btn-sm-outline { border: 1px solid var(--clr-border); color: var(--clr-muted); }
.btn-sm-outline:hover { border-color: var(--clr-primary); color: var(--clr-primary); }

/* ===== 合作品牌 ===== */
.partners-section { background: var(--clr-bg); }
.partner-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}
.partner-item {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 16px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--clr-muted);
  transition: all var(--transition);
}
.partner-item:hover { border-color: var(--clr-primary); color: var(--clr-primary); }

/* ===== How-To 加入 ===== */
.howto-section { background: var(--clr-bg2); }
.howto-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}
.howto-step {
  text-align: center;
  padding: 28px 20px;
  background: var(--clr-card);
  border-radius: var(--radius);
  border: 1px solid var(--clr-border);
  position: relative;
}
.step-num {
  width: 48px; height: 48px;
  background: var(--grad-main);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
  margin: 0 auto 16px;
}
.howto-step h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; }
.howto-step p { font-size: 0.83rem; color: var(--clr-muted); }

/* ===== 联系我们 ===== */
.contact-section { background: var(--clr-bg); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info-block { display: flex; flex-direction: column; gap: 16px; }
.contact-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px;
  background: var(--clr-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border);
}
.contact-item-icon {
  width: 40px; height: 40px;
  background: rgba(255,46,147,0.12);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.contact-item-label { font-size: 0.78rem; color: var(--clr-muted); margin-bottom: 2px; }
.contact-item-value { font-size: 0.9rem; font-weight: 600; }
.qrcode-block { display: flex; gap: 20px; flex-wrap: wrap; }
.qrcode-item { text-align: center; }
.qrcode-item img { width: 120px; height: 120px; border-radius: var(--radius-sm); margin-bottom: 8px; }
.qrcode-label { font-size: 0.8rem; color: var(--clr-muted); }

/* ===== 用户评论 ===== */
.reviews-section { background: var(--clr-bg2); }
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color var(--transition);
}
.review-card:hover { border-color: var(--clr-primary); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.review-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--grad-main);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.review-name { font-size: 0.9rem; font-weight: 700; }
.review-stars { color: #F59E0B; font-size: 0.85rem; }
.review-text { font-size: 0.85rem; color: var(--clr-muted); line-height: 1.7; margin-bottom: 12px; }
.review-author { font-size: 0.78rem; color: var(--clr-primary); }

/* ===== FAQ ===== */
.faq-section { background: var(--clr-bg); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: var(--clr-primary); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  cursor: pointer;
  font-size: 0.92rem;
  font-weight: 600;
  gap: 12px;
}
.faq-q .faq-icon {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: rgba(255,46,147,0.12);
  display: flex; align-items: center; justify-content: center;
  color: var(--clr-primary);
  font-size: 1rem;
  flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  font-size: 0.86rem;
  color: var(--clr-muted);
  line-height: 1.8;
}
.faq-item.open .faq-a { max-height: 300px; padding: 0 20px 18px; }

/* ===== 分享栏 ===== */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 32px;
}
.share-label { font-size: 0.85rem; color: var(--clr-muted); }
.share-btn {
  padding: 7px 18px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  transition: all var(--transition);
  border: 1px solid var(--clr-border);
  color: var(--clr-muted);
}
.share-btn:hover { background: var(--clr-primary); border-color: var(--clr-primary); color: #fff; }
.share-wechat:hover { background: #07C160; border-color: #07C160; }
.share-weibo:hover { background: #E6162D; border-color: #E6162D; }
.share-douyin:hover { background: #000; border-color: #000; }
.share-bilibili:hover { background: #00A1D6; border-color: #00A1D6; }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--clr-bg2);
  border-top: 1px solid var(--clr-border);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand .footer-logo img { height: 36px; width: auto; }
.footer-brand .footer-logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-desc { font-size: 0.85rem; color: var(--clr-muted); line-height: 1.7; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--clr-bg3);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  color: var(--clr-muted);
  transition: all var(--transition);
}
.footer-social a:hover { background: var(--clr-primary); color: #fff; }
.footer-col h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 16px; color: var(--clr-text); }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 0.84rem; color: var(--clr-muted); transition: color var(--transition); }
.footer-links a:hover { color: var(--clr-primary); }
.footer-bottom {
  border-top: 1px solid var(--clr-border);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--clr-muted);
}
.footer-copyright span { color: var(--clr-primary); }
.footer-update { color: var(--clr-secondary); font-size: 0.8rem; }

/* ===== 分页 ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.page-btn {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  color: var(--clr-muted);
  font-size: 0.88rem;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.page-btn:hover,
.page-btn.active { background: var(--clr-primary); border-color: var(--clr-primary); color: #fff; }

/* ===== 页面Hero (内页) ===== */
.page-hero {
  background: var(--clr-bg2);
  padding: 60px 0;
  border-bottom: 1px solid var(--clr-border);
}
.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 12px;
}
.page-hero h1 .brand-accent { color: var(--clr-primary); }
.page-hero p { font-size: 1rem; color: var(--clr-muted); max-width: 600px; }

/* ===== Toast提示 ===== */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--clr-card);
  border: 1px solid var(--clr-primary);
  color: var(--clr-text);
  padding: 12px 28px;
  border-radius: 28px;
  font-size: 0.88rem;
  font-weight: 600;
  z-index: 9999;
  box-shadow: var(--shadow-glow);
  transition: transform 0.4s ease, opacity 0.4s ease;
  opacity: 0;
  pointer-events: none;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ===== 回顶部 ===== */
.back-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px; height: 44px;
  background: var(--grad-main);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 1.1rem;
  box-shadow: var(--shadow-glow);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 999;
  cursor: pointer;
}
.back-top.visible { opacity: 1; pointer-events: auto; }
.back-top:hover { transform: translateY(-3px); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .ai-grid { grid-template-columns: 1fr; }
  .ai-visual { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-menu { display: none; }
  .nav-hamburger { display: flex; }
  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: var(--clr-bg2);
    border-bottom: 1px solid var(--clr-border);
    padding: 16px 24px;
    gap: 4px;
    z-index: 999;
  }
  .hero { min-height: 480px; }
  .hero h1 { font-size: 1.8rem; }
  .hero-stats { gap: 20px; }
  .entertain-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .section { padding: 56px 0; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
}
@media (max-width: 480px) {
  .community-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-outline { text-align: center; }
  .howto-steps { grid-template-columns: 1fr; }
  .experts-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}