/* ============================================
   双飞 - 原创样式表
   品牌定位：影视传媒公司 + 视频社区
   配色方案：甜心粉红 + 梦幻紫 + 深夜蓝黑
   ============================================ */

/* CSS Variables */
:root {
  --primary: #E8436F;
  --primary-light: #FF6B9D;
  --accent: #7C3AED;
  --dark-bg: #1A1A2E;
  --dark-bg2: #16213E;
  --card-bg: #0F3460;
  --card-bg-hover: #1a4a7a;
  --text-main: #FFFFFF;
  --text-sub: #B8C5D6;
  --text-muted: #8899AA;
  --gradient: linear-gradient(135deg, #E8436F, #7C3AED);
  --gradient-h: linear-gradient(90deg, #E8436F, #7C3AED);
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-sm: 0 2px 12px rgba(0,0,0,0.2);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
  --max-width: 1280px;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--dark-bg);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* ============ Header / Navigation ============ */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(26, 26, 46, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(232, 67, 111, 0.2);
  transition: var(--transition);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--max-width); margin: 0 auto; padding: 0 20px; height: 68px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo img { height: 42px; width: auto; }
.logo span { font-size: 1.3rem; font-weight: 700; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  padding: 8px 16px; border-radius: var(--radius-sm); font-size: 0.95rem;
  color: var(--text-sub); transition: var(--transition); white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--text-main); background: rgba(232, 67, 111, 0.15);
}
.nav-toggle { display: none; background: none; border: none; color: var(--text-main); font-size: 1.5rem; cursor: pointer; }

/* Search Bar */
.search-bar {
  position: relative; width: 100%; max-width: var(--max-width); margin: 0 auto;
  padding: 12px 20px; background: var(--dark-bg2);
}
.search-bar input {
  width: 100%; padding: 10px 44px 10px 16px; border-radius: 24px;
  border: 1px solid rgba(232, 67, 111, 0.3); background: rgba(15, 52, 96, 0.6);
  color: var(--text-main); font-size: 0.95rem; outline: none; transition: var(--transition);
}
.search-bar input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(232, 67, 111, 0.15); }
.search-bar input::placeholder { color: var(--text-muted); }
.search-bar button {
  position: absolute; right: 28px; top: 50%; transform: translateY(-50%);
  background: var(--gradient); border: none; color: #fff; width: 36px; height: 36px;
  border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
}

/* ============ Hero Banner ============ */
.hero {
  position: relative; margin-top: 68px; height: 520px; overflow: hidden;
  background: var(--dark-bg2);
}
.hero-slide {
  position: absolute; inset: 0; opacity: 0; transition: opacity 1s ease;
}
.hero-slide.active { opacity: 1; }
.hero-slide img { width: 100%; height: 100%; object-fit: cover; }
.keq46na {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(26,26,46,0.3) 0%, rgba(26,26,46,0.85) 100%);
  display: flex; align-items: center; justify-content: center;
}
.j3ml6r { text-align: center; padding: 20px; max-width: 700px; }
.j3ml6r h1 { font-size: 2.6rem; font-weight: 800; margin-bottom: 16px; line-height: 1.3; }
.j3ml6r h1 span { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.j3ml6r p { font-size: 1.1rem; color: var(--text-sub); margin-bottom: 28px; }
.btn-primary {
  display: inline-block; padding: 12px 32px; background: var(--gradient);
  color: #fff; border-radius: 28px; font-size: 1rem; font-weight: 600;
  border: none; cursor: pointer; transition: var(--transition);
  box-shadow: 0 4px 16px rgba(232, 67, 111, 0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(232, 67, 111, 0.5); color: #fff; }
.btn-outline {
  display: inline-block; padding: 10px 28px; border: 2px solid var(--primary);
  color: var(--primary-light); border-radius: 28px; font-size: 0.95rem; font-weight: 600;
  transition: var(--transition); margin-left: 12px;
}
.btn-outline:hover { background: var(--primary); color: #fff; }

/* ============ Section Common ============ */
.section { padding: 72px 0; }
.jduipncm { background: var(--dark-bg); }
.el1w7t9 { background: var(--dark-bg2); }
.section-title {
  text-align: center; margin-bottom: 48px;
}
.section-title h2 {
  font-size: 2rem; font-weight: 700; margin-bottom: 12px;
}
.section-title h2 span { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.section-title p { color: var(--text-sub); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }
.hqe9z {
  width: 60px; height: 3px; background: var(--gradient); margin: 12px auto 0; border-radius: 2px;
}

/* ============ Video Cards ============ */
.fvtzj {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.video-card {
  background: var(--card-bg); border-radius: var(--radius); overflow: hidden;
  transition: var(--transition); cursor: pointer; position: relative;
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); background: var(--card-bg-hover); }
.fsmni {
  position: relative; padding-top: 56.25%; overflow: hidden;
}
.fsmni img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .fsmni img { transform: scale(1.05); }
.play-btn {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 56px; height: 56px; background: rgba(232, 67, 111, 0.85); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: var(--transition);
}
.play-btn::after {
  content: ''; width: 0; height: 0;
  border-left: 18px solid #fff; border-top: 11px solid transparent; border-bottom: 11px solid transparent;
  margin-left: 4px;
}
.video-card:hover .play-btn { opacity: 1; }
.y2g2a51 { padding: 14px 16px; }
.y2g2a51 h3 { font-size: 0.95rem; font-weight: 600; margin-bottom: 8px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.hi5fo1pg { display: flex; align-items: center; gap: 14px; font-size: 0.8rem; color: var(--text-muted); }
.hi5fo1pg span { display: flex; align-items: center; gap: 4px; }
.dtz584p {
  position: absolute; top: 10px; left: 10px; padding: 3px 10px;
  background: var(--gradient); border-radius: 4px; font-size: 0.75rem; font-weight: 600; color: #fff; z-index: 2;
}
.agwo2o {
  position: absolute; bottom: 10px; right: 10px; padding: 2px 8px;
  background: rgba(0,0,0,0.75); border-radius: 4px; font-size: 0.75rem; color: #fff; z-index: 2;
}

/* ============ Service Cards ============ */
.z5uyu {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.service-card {
  background: var(--card-bg); border-radius: var(--radius); padding: 32px 24px;
  text-align: center; transition: var(--transition); border: 1px solid transparent;
}
.service-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow); }
.jqnnv {
  width: 64px; height: 64px; margin: 0 auto 20px;
  background: var(--gradient); border-radius: 16px; display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem;
}
.service-card h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 10px; }
.service-card p { color: var(--text-sub); font-size: 0.9rem; line-height: 1.6; }

/* ============ Expert Cards ============ */
.xg4xor {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px;
}
.expert-card {
  background: var(--card-bg); border-radius: var(--radius); padding: 28px 20px;
  text-align: center; transition: var(--transition);
}
.expert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.mg3px8j {
  width: 100px; height: 100px; border-radius: 50%; margin: 0 auto 16px;
  overflow: hidden; border: 3px solid var(--primary);
}
.mg3px8j img { width: 100%; height: 100%; object-fit: cover; }
.expert-card h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 4px; }
.expert-card .rjkgjrsd { color: var(--primary-light); font-size: 0.85rem; margin-bottom: 10px; }
.expert-card p { color: var(--text-sub); font-size: 0.85rem; line-height: 1.5; margin-bottom: 14px; }
.gzjpj { display: flex; justify-content: center; gap: 10px; }
.gzjpj a {
  padding: 6px 14px; border-radius: 20px; font-size: 0.8rem; font-weight: 500;
  border: 1px solid var(--primary); color: var(--primary-light);
}
.gzjpj a:hover { background: var(--primary); color: #fff; }

/* ============ Community Section ============ */
.gndrdga {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; align-items: center;
}
.m4rufx { border-radius: var(--radius); overflow: hidden; }
.m4rufx img { width: 100%; }
.snjzl { display: flex; flex-direction: column; gap: 18px; }
.h6ug2w {
  display: flex; align-items: flex-start; gap: 14px; padding: 16px;
  background: var(--card-bg); border-radius: var(--radius-sm); transition: var(--transition);
}
.h6ug2w:hover { background: var(--card-bg-hover); }
.h6ug2w .icon {
  width: 44px; height: 44px; min-width: 44px; background: var(--gradient);
  border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 1.2rem;
}
.h6ug2w h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 4px; }
.h6ug2w p { color: var(--text-sub); font-size: 0.85rem; }

/* ============ Partners ============ */
.zznvy {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 28px; align-items: center;
}
.mcnrnbv8 {
  padding: 16px 28px; background: var(--card-bg); border-radius: var(--radius-sm);
  font-size: 1rem; font-weight: 600; color: var(--text-sub); transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.05);
}
.mcnrnbv8:hover { border-color: var(--primary); color: var(--text-main); }

/* ============ Reviews ============ */
.i7x35djm {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.b1by4da {
  background: var(--card-bg); border-radius: var(--radius); padding: 24px;
  transition: var(--transition);
}
.b1by4da:hover { box-shadow: var(--shadow); }
.oe116q6 { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.pzu35 {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--gradient); display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.1rem;
}
.vah77 { font-weight: 600; font-size: 0.95rem; }
.kylfckm { font-size: 0.8rem; color: var(--text-muted); }
.dmk11x { color: #FFD700; margin-bottom: 8px; font-size: 0.9rem; }
.e37zf19 { color: var(--text-sub); font-size: 0.9rem; line-height: 1.6; }

/* ============ FAQ ============ */
.x1wu0zs { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--card-bg); border-radius: var(--radius-sm); overflow: hidden;
  border: 1px solid rgba(255,255,255,0.05);
}
.faq-question {
  padding: 18px 20px; cursor: pointer; display: flex; justify-content: space-between;
  align-items: center; font-weight: 600; font-size: 0.95rem; transition: var(--transition);
}
.faq-question:hover { color: var(--primary-light); }
.faq-question::after { content: '+'; font-size: 1.3rem; color: var(--primary); transition: var(--transition); }
.faq-item.active .faq-question::after { content: '-'; }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.35s ease;
}
.faq-answer-inner { padding: 0 20px 18px; color: var(--text-sub); font-size: 0.9rem; line-height: 1.7; }
.faq-item.active .faq-answer { max-height: 300px; }

/* ============ Contact ============ */
.h3abs {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px;
}
.sc89sde { display: flex; flex-direction: column; gap: 18px; }
.lwfzx {
  display: flex; align-items: flex-start; gap: 14px; padding: 16px;
  background: var(--card-bg); border-radius: var(--radius-sm);
}
.lwfzx .icon {
  width: 40px; height: 40px; min-width: 40px; background: var(--gradient);
  border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 1.1rem;
}
.lwfzx h4 { font-size: 0.9rem; font-weight: 600; margin-bottom: 2px; }
.lwfzx p { color: var(--text-sub); font-size: 0.85rem; }
.f92370y { display: flex; gap: 24px; justify-content: center; align-items: flex-start; }
.zag85deb { text-align: center; }
.zag85deb img { width: 160px; height: 160px; border-radius: var(--radius-sm); margin-bottom: 8px; }
.zag85deb p { font-size: 0.85rem; color: var(--text-sub); }

/* ============ Footer ============ */
.site-footer {
  background: #0d0d1a; padding: 48px 0 0; border-top: 1px solid rgba(232, 67, 111, 0.15);
}
.zw5dl8yg {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 36px;
}
.o3jik .logo { margin-bottom: 12px; }
.o3jik p { color: var(--text-sub); font-size: 0.9rem; line-height: 1.6; }
.oyo2m5me h4 { font-size: 1rem; font-weight: 600; margin-bottom: 14px; color: var(--text-main); }
.oyo2m5me a { display: block; color: var(--text-sub); font-size: 0.9rem; padding: 4px 0; transition: var(--transition); }
.oyo2m5me a:hover { color: var(--primary-light); padding-left: 4px; }
.uv4flbxi {
  border-top: 1px solid rgba(255,255,255,0.05); padding: 20px 0;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.85rem; color: var(--text-muted);
}
.r39pyl { display: flex; gap: 12px; }
.r39pyl a {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--card-bg); display: flex; align-items: center; justify-content: center;
  color: var(--text-sub); font-size: 0.9rem; transition: var(--transition);
}
.r39pyl a:hover { background: var(--gradient); color: #fff; }

/* ============ Breadcrumb ============ */
.tnvrk56 {
  padding: 16px 0; font-size: 0.85rem; color: var(--text-muted);
  margin-top: 68px;
}
.tnvrk56 a { color: var(--text-sub); }
.tnvrk56 a:hover { color: var(--primary-light); }
.tnvrk56 span { margin: 0 8px; }

/* ============ Share Buttons ============ */
.share-bar {
  display: flex; align-items: center; gap: 12px; padding: 16px 0;
}
.share-bar span { font-size: 0.9rem; color: var(--text-sub); }
.share-btn {
  padding: 6px 16px; border-radius: 20px; font-size: 0.8rem;
  background: var(--card-bg); color: var(--text-sub); border: none; cursor: pointer;
  transition: var(--transition);
}
.share-btn:hover { background: var(--primary); color: #fff; }

/* ============ How-To Guide ============ */
.p8j7jg {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.e0dswzyu {
  text-align: center; padding: 24px 16px; background: var(--card-bg);
  border-radius: var(--radius); position: relative;
}
.mryi6 {
  width: 40px; height: 40px; background: var(--gradient); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.1rem; margin: 0 auto 14px;
}
.e0dswzyu h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 8px; }
.e0dswzyu p { color: var(--text-sub); font-size: 0.85rem; }

/* ============ AI Section ============ */
.g5386 {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.ai-card {
  background: var(--card-bg); border-radius: var(--radius); padding: 28px 22px;
  border: 1px solid rgba(124, 58, 237, 0.2); transition: var(--transition);
}
.ai-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: 0 4px 24px rgba(124, 58, 237, 0.2); }
.ai-card .icon { font-size: 2rem; margin-bottom: 14px; }
.ai-card h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 8px; }
.ai-card p { color: var(--text-sub); font-size: 0.88rem; line-height: 1.6; }

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  .fvtzj { grid-template-columns: repeat(3, 1fr); }
  .zw5dl8yg { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .main-nav {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    background: rgba(26, 26, 46, 0.98); flex-direction: column; padding: 16px;
    border-bottom: 1px solid rgba(232, 67, 111, 0.2);
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 16px; width: 100%; }
  .hero { height: 400px; }
  .j3ml6r h1 { font-size: 1.8rem; }
  .fvtzj { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .z5uyu { grid-template-columns: 1fr; }
  .xg4xor { grid-template-columns: repeat(2, 1fr); }
  .gndrdga { grid-template-columns: 1fr; }
  .i7x35djm { grid-template-columns: 1fr; }
  .h3abs { grid-template-columns: 1fr; }
  .p8j7jg { grid-template-columns: repeat(2, 1fr); }
  .g5386 { grid-template-columns: 1fr; }
  .zw5dl8yg { grid-template-columns: 1fr; }
  .uv4flbxi { flex-direction: column; gap: 12px; text-align: center; }
  .section { padding: 48px 0; }
  .section-title h2 { font-size: 1.6rem; }
}
@media (max-width: 480px) {
  .fvtzj { grid-template-columns: 1fr; }
  .xg4xor { grid-template-columns: 1fr; }
  .p8j7jg { grid-template-columns: 1fr; }
  .hero { height: 320px; }
  .j3ml6r h1 { font-size: 1.5rem; }
  .f92370y { flex-direction: column; align-items: center; }
}

/* ============ Lazy Load ============ */
img[loading="lazy"] { opacity: 0; transition: opacity 0.5s ease; }
img[loading="lazy"].loaded, img[loading="lazy"][src] { opacity: 1; }

/* ============ Animations ============ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-in { animation: fadeInUp 0.6s ease forwards; }

/* ============ Tags ============ */
.weyq4wg { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.rl53q {
  padding: 4px 12px; background: rgba(232, 67, 111, 0.15); border-radius: 16px;
  font-size: 0.78rem; color: var(--primary-light);
}

/* ============ Inner Page Hero ============ */
.of16wm {
  margin-top: 68px; padding: 60px 0 40px;
  background: var(--dark-bg2); text-align: center;
}
.of16wm h1 { font-size: 2.2rem; font-weight: 700; margin-bottom: 12px; }
.of16wm h1 span { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.of16wm p { color: var(--text-sub); font-size: 1.05rem; }

/* ============ Update Time ============ */
.axbncyks { font-size: 0.82rem; color: var(--text-muted); }