/* ============================================
   91 - 影视传媒创作平台 · 传媒社区互动中心
   原创CSS样式 | untgmkt.cn
   ============================================ */

/* === 基础重置与变量 === */
:root {
  --umh-pink: #E8456B;
  --umh-purple: #2D1B4E;
  --umh-gold: #FFB347;
  --umh-bg: #FFF8F5;
  --umh-text: #1A1A2E;
  --umh-gray: #6B7280;
  --umh-light: #F3E8FF;
  --umh-card: #FFFFFF;
  --umh-border: #E5E7EB;
  --umh-shadow: 0 4px 24px rgba(45,27,78,0.08);
  --umh-radius: 12px;
  --umh-transition: all 0.3s ease;
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background-color: var(--umh-bg);
  color: var(--umh-text);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: var(--umh-pink);
  text-decoration: none;
  transition: var(--umh-transition);
}

a:hover {
  color: var(--umh-purple);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* === 顶部导航 === */
.site-header {
  background: linear-gradient(135deg, var(--umh-purple) 0%, #4A2D7A 100%);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(45,27,78,0.15);
}

.jemcb1 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  max-width: 1200px;
  margin: 0 auto;
  height: 68px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-logo img {
  height: 42px;
  width: auto;
}

.site-logo span {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 2px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav a {
  color: rgba(255,255,255,0.85);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--umh-transition);
}

.main-nav a:hover,
.main-nav a.active {
  background: rgba(232,69,107,0.3);
  color: #fff;
}

.kru3r {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

/* === 搜索框 === */
.peoj1 {
  background: linear-gradient(90deg, var(--umh-purple) 0%, #3D2266 100%);
  padding: 12px 0;
}

.search-bar {
  max-width: 640px;
  margin: 0 auto;
  position: relative;
}

.search-bar input {
  width: 100%;
  padding: 12px 50px 12px 20px;
  border: 2px solid rgba(232,69,107,0.4);
  border-radius: 30px;
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-size: 0.95rem;
  outline: none;
  transition: var(--umh-transition);
}

.search-bar input::placeholder {
  color: rgba(255,255,255,0.5);
}

.search-bar input:focus {
  border-color: var(--umh-pink);
  background: rgba(255,255,255,0.15);
}

.search-bar button {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--umh-pink);
  border: none;
  color: #fff;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1rem;
  transition: var(--umh-transition);
}

.search-bar button:hover {
  background: #D63A5C;
}

/* === 英雄区 === */
.nr83nc {
  position: relative;
  background: linear-gradient(135deg, rgba(45,27,78,0.85), rgba(232,69,107,0.7));
  min-height: 480px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.yrz5huv {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  opacity: 0.4;
}

.s6ab0 {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 20px;
  color: #fff;
}

.s6ab0 h1 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.s6ab0 h1 em {
  color: var(--umh-gold);
  font-style: normal;
}

.s6ab0 p {
  font-size: 1.15rem;
  max-width: 600px;
  margin-bottom: 30px;
  opacity: 0.9;
  line-height: 1.8;
}

.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-block;
  background: var(--umh-pink);
  color: #fff;
  padding: 14px 32px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--umh-transition);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: #D63A5C;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(232,69,107,0.4);
  color: #fff;
}

.btn-outline {
  display: inline-block;
  border: 2px solid rgba(255,255,255,0.6);
  color: #fff;
  padding: 12px 30px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--umh-transition);
  background: transparent;
  cursor: pointer;
}

.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
  color: #fff;
}

/* === 面包屑 === */
.breadcrumb {
  padding: 14px 0;
  font-size: 0.85rem;
  color: var(--umh-gray);
}

.breadcrumb a {
  color: var(--umh-gray);
}

.breadcrumb a:hover {
  color: var(--umh-pink);
}

.breadcrumb span {
  margin: 0 6px;
}

/* === 通用板块 === */
.section {
  padding: 60px 0;
}

.zkcnk {
  background: var(--umh-light);
}

.yq9hky {
  background: linear-gradient(135deg, var(--umh-purple), #3D2266);
  color: #fff;
}

.section-title {
  text-align: center;
  margin-bottom: 40px;
}

.section-title h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--umh-purple);
  margin-bottom: 10px;
}

.yq9hky .section-title h2 {
  color: #fff;
}

.section-title p {
  color: var(--umh-gray);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

.yq9hky .section-title p {
  color: rgba(255,255,255,0.7);
}

/* === 视频卡片网格 === */
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.video-card {
  background: var(--umh-card);
  border-radius: var(--umh-radius);
  overflow: hidden;
  box-shadow: var(--umh-shadow);
  transition: var(--umh-transition);
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(45,27,78,0.15);
}

.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.video-card:hover .video-thumb img {
  transform: scale(1.05);
}

.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: 60px;
  height: 60px;
  background: rgba(232,69,107,0.85);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--umh-transition);
}

.play-btn::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}

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

.video-info {
  padding: 16px;
}

.video-info h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--umh-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--umh-gray);
}

.video-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.video-tags {
  display: flex;
  gap: 6px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.video-tags span {
  background: var(--umh-light);
  color: var(--umh-purple);
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
}

/* === 特色功能卡片 === */
.atpez3dg {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.z19rg59 {
  background: var(--umh-card);
  border-radius: var(--umh-radius);
  padding: 30px 24px;
  text-align: center;
  box-shadow: var(--umh-shadow);
  transition: var(--umh-transition);
  border: 1px solid transparent;
}

.z19rg59:hover {
  border-color: var(--umh-pink);
  transform: translateY(-4px);
}

.doznqb {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--umh-pink), var(--umh-purple));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.8rem;
  color: #fff;
}

.z19rg59 h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--umh-purple);
}

.z19rg59 p {
  font-size: 0.9rem;
  color: var(--umh-gray);
  line-height: 1.6;
}

/* === 专家展示 === */
.m0y1kxf {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.omugswf2 {
  background: var(--umh-card);
  border-radius: var(--umh-radius);
  padding: 30px 20px;
  text-align: center;
  box-shadow: var(--umh-shadow);
  transition: var(--umh-transition);
}

.omugswf2:hover {
  transform: translateY(-4px);
}

.hzqv8 {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--umh-pink);
}

.omugswf2 h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--umh-purple);
  margin-bottom: 4px;
}

.omugswf2 .role {
  font-size: 0.85rem;
  color: var(--umh-pink);
  margin-bottom: 10px;
}

.omugswf2 p {
  font-size: 0.85rem;
  color: var(--umh-gray);
  line-height: 1.5;
  margin-bottom: 14px;
}

.v2t4b {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.v2t4b a {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.v2t4b .m334ivs {
  background: var(--umh-pink);
  color: #fff;
}

.v2t4b .thidxnd {
  border: 1px solid var(--umh-pink);
  color: var(--umh-pink);
}

/* === 社区模块 === */
.in7r3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.oe9hkqo {
  border-radius: var(--umh-radius);
  overflow: hidden;
  box-shadow: var(--umh-shadow);
  transition: var(--umh-transition);
}

.oe9hkqo:hover {
  transform: translateY(-4px);
}

.oe9hkqo img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.oe9hkqo .fk5abe2c {
  padding: 20px;
  background: var(--umh-card);
}

.oe9hkqo h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--umh-purple);
}

.oe9hkqo p {
  font-size: 0.9rem;
  color: var(--umh-gray);
  line-height: 1.6;
}

/* === FAQ === */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--umh-card);
  border-radius: var(--umh-radius);
  margin-bottom: 12px;
  box-shadow: var(--umh-shadow);
  overflow: hidden;
}

.faq-question {
  padding: 18px 24px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--umh-transition);
}

.faq-question:hover {
  color: var(--umh-pink);
}

.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--umh-pink);
  transition: var(--umh-transition);
}

.faq-item.active .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  color: var(--umh-gray);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  padding: 0 24px 18px;
  max-height: 300px;
}

/* === 用户评论 === */
.hvft8dox {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.sb6p06y {
  background: var(--umh-card);
  border-radius: var(--umh-radius);
  padding: 24px;
  box-shadow: var(--umh-shadow);
  transition: var(--umh-transition);
}

.sb6p06y:hover {
  transform: translateY(-3px);
}

.jgjrqp {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.j07vh {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--umh-pink), var(--umh-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
}

.ehm30 {
  font-weight: 600;
  color: var(--umh-text);
}

.a2dsl91k {
  color: var(--umh-gold);
  font-size: 0.9rem;
}

.sb6p06y p {
  color: var(--umh-gray);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* === 合作品牌 === */
.hmfkm {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
  padding: 20px 0;
}

.hmfkm .rdwf0vtu {
  width: 140px;
  height: 70px;
  background: var(--umh-card);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--umh-shadow);
  padding: 10px;
  font-weight: 700;
  color: var(--umh-purple);
  font-size: 0.9rem;
}

/* === 联系我们 === */
.tbmln {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.y07r9n1w {
  background: var(--umh-card);
  border-radius: var(--umh-radius);
  padding: 30px;
  box-shadow: var(--umh-shadow);
}

.y07r9n1w h3 {
  font-size: 1.2rem;
  color: var(--umh-purple);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--umh-light);
}

.dzl4x {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 0.95rem;
}

.dzl4x .label {
  font-weight: 600;
  color: var(--umh-text);
  min-width: 80px;
}

.dzl4x .value {
  color: var(--umh-gray);
}

.b2tl6 {
  display: flex;
  gap: 30px;
  justify-content: center;
  margin-top: 20px;
}

.t0lh7i {
  text-align: center;
}

.t0lh7i img {
  width: 140px;
  height: 140px;
  border-radius: 8px;
  margin-bottom: 8px;
}

.t0lh7i span {
  font-size: 0.85rem;
  color: var(--umh-gray);
}

/* === How-To 指南 === */
.wavfsu {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.lai3sgeo {
  background: var(--umh-card);
  border-radius: var(--umh-radius);
  padding: 30px 20px;
  text-align: center;
  box-shadow: var(--umh-shadow);
  position: relative;
}

.lai3sgeo::before {
  counter-increment: step;
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--umh-pink);
  color: #fff;
  border-radius: 50%;
  font-weight: 700;
  margin: 0 auto 14px;
}

.lai3sgeo h4 {
  font-size: 1rem;
  color: var(--umh-purple);
  margin-bottom: 8px;
}

.lai3sgeo p {
  font-size: 0.85rem;
  color: var(--umh-gray);
}

/* === 社交分享 === */
.kftox5mr {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.er5mh {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: 25px;
  font-size: 0.9rem;
  font-weight: 500;
  color: #fff;
  transition: var(--umh-transition);
}

.er5mh:hover {
  transform: translateY(-2px);
  color: #fff;
}

.er5mh.wechat { background: #07C160; }
.er5mh.weibo { background: #E6162D; }
.er5mh.douyin { background: #161823; }
.er5mh.bilibili { background: #00A1D6; }

/* === 页脚 === */
.site-footer {
  background: var(--umh-purple);
  color: rgba(255,255,255,0.7);
  padding: 50px 0 0;
}

.fy4cv {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.ux9yd p {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-top: 12px;
}

.o3ejnk h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 16px;
  font-weight: 600;
}

.o3ejnk a {
  display: block;
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.o3ejnk a:hover {
  color: var(--umh-pink);
}

.akrl75e6 {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 0.85rem;
}

.wchg1kiw {
  display: flex;
  gap: 20px;
  margin-top: 16px;
}

.wchg1kiw img {
  width: 100px;
  height: 100px;
  border-radius: 6px;
}

/* === AI功能展示 === */
.uckwc0nn {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.uckwc0nn img {
  border-radius: var(--umh-radius);
  box-shadow: var(--umh-shadow);
}

.senakt {
  list-style: none;
}

.senakt li {
  padding: 12px 0;
  border-bottom: 1px solid var(--umh-border);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
}

.senakt li::before {
  content: '✦';
  color: var(--umh-pink);
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* === 数据统计 === */
.o7gq9 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.yn7h84fy {
  padding: 20px;
}

.wq0su {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--umh-gold);
  display: block;
}

.o3x37 {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  margin-top: 4px;
}

/* === 懒加载 === */
.lazy {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.lazy.loaded {
  opacity: 1;
}

/* === 响应式 === */
@media (max-width: 1024px) {
  .atpez3dg,
  .m0y1kxf {
    grid-template-columns: repeat(2, 1fr);
  }
  .fy4cv {
    grid-template-columns: repeat(2, 1fr);
  }
  .wavfsu {
    grid-template-columns: repeat(2, 1fr);
  }
  .uckwc0nn {
    grid-template-columns: 1fr;
  }
  .o7gq9 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .jemcb1 {
    height: 56px;
  }
  .main-nav {
    display: none;
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--umh-purple);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  }
  .main-nav.open {
    display: flex;
  }
  .main-nav a {
    padding: 12px 16px;
    width: 100%;
  }
  .kru3r {
    display: block;
  }
  .s6ab0 h1 {
    font-size: 1.8rem;
  }
  .nr83nc {
    min-height: 360px;
  }
  .video-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .atpez3dg,
  .m0y1kxf {
    grid-template-columns: 1fr;
  }
  .in7r3 {
    grid-template-columns: 1fr;
  }
  .hvft8dox {
    grid-template-columns: 1fr;
  }
  .tbmln {
    grid-template-columns: 1fr;
  }
  .fy4cv {
    grid-template-columns: 1fr;
  }
  .section {
    padding: 40px 0;
  }
  .section-title h2 {
    font-size: 1.5rem;
  }
  .wavfsu {
    grid-template-columns: 1fr;
  }
  .o7gq9 {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .video-grid {
    grid-template-columns: 1fr;
  }
  .s6ab0 h1 {
    font-size: 1.5rem;
  }
  .hero-btns {
    flex-direction: column;
  }
  .hero-btns a {
    text-align: center;
  }
}

/* === H5 Video 元素 === */
.video-thumb video {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 3;
}

.video-thumb video.playing {
  display: block;
}

.video-thumb .video-poster {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.play-btn {
  z-index: 2;
  cursor: pointer;
}

.play-btn.visible {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* === 评论日期 === */
.o0kaj {
  display: block;
  margin-top: 10px;
  font-size: 0.8rem;
  color: var(--umh-gray);
}