/* ============================================
   含羞草黄 - 原创样式表
   品牌：含羞草黄 | 域名：whcfei.cn
   ============================================ */

/* CSS Variables */
:root {
  --tiger-red: #E8364F;
  --deep-night: #1A1A2E;
  --vibrant-orange: #FF6B35;
  --dark-bg: #0D0D1A;
  --light-text: #F0F0F5;
  --card-bg: #16162A;
  --card-hover: #1E1E3A;
  --border-subtle: rgba(232, 54, 79, 0.15);
  --gradient-primary: linear-gradient(135deg, #E8364F 0%, #FF6B35 100%);
  --gradient-dark: linear-gradient(180deg, #0D0D1A 0%, #1A1A2E 100%);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 8px 40px rgba(232, 54, 79, 0.2);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 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, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--dark-bg);
  color: var(--light-text);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--tiger-red); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--vibrant-orange); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* Container */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.container-wide { max-width: 1400px; margin: 0 auto; padding: 0 20px; }

/* ============ Header & Navigation ============ */
.site-header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background: rgba(13, 13, 26, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1400px; margin: 0 auto; padding: 0 20px; height: 68px;
}
.site-logo { display: flex; align-items: center; gap: 10px; }
.site-logo img { height: 40px; width: auto; }
.site-logo span { font-size: 1.3rem; font-weight: 700; color: var(--light-text); }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  padding: 8px 16px; border-radius: var(--radius-sm);
  color: var(--light-text); font-size: 0.95rem; font-weight: 500;
  transition: var(--transition);
}
.main-nav a:hover, .main-nav a.active {
  background: var(--tiger-red); color: #fff;
}
.nav-search {
  display: flex; align-items: center; background: var(--card-bg);
  border: 1px solid var(--border-subtle); border-radius: 24px;
  padding: 0 4px 0 14px; height: 36px;
}
.nav-search input {
  background: transparent; border: none; outline: none;
  color: var(--light-text); font-size: 0.85rem; width: 140px;
}
.nav-search input::placeholder { color: rgba(240, 240, 245, 0.4); }
.nav-search button {
  background: var(--gradient-primary); border: none; border-radius: 50%;
  width: 28px; height: 28px; cursor: pointer; display: flex;
  align-items: center; justify-content: center; color: #fff; font-size: 0.8rem;
}
.mobile-toggle { display: none; background: none; border: none; color: var(--light-text); font-size: 1.5rem; cursor: pointer; }

/* ============ Hero Section ============ */
.hero-section {
  margin-top: 68px; position: relative; overflow: hidden;
  height: 520px; display: flex; align-items: center;
}
.hero-bg {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  object-fit: cover; opacity: 0.5;
}
.hero-overlay {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(135deg, rgba(13,13,26,0.85) 0%, rgba(26,26,46,0.6) 50%, rgba(13,13,26,0.85) 100%);
}
.hero-content {
  position: relative; z-index: 2; text-align: center; width: 100%;
  padding: 0 20px;
}
.hero-content h1 {
  font-size: 2.8rem; font-weight: 800; margin-bottom: 16px;
  background: var(--gradient-primary); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-content p { font-size: 1.15rem; color: rgba(240,240,245,0.8); max-width: 680px; margin: 0 auto 28px; }
.hero-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 28px; }
.hero-tags span {
  padding: 5px 14px; background: rgba(232,54,79,0.15);
  border: 1px solid rgba(232,54,79,0.3); border-radius: 20px;
  font-size: 0.85rem; color: var(--tiger-red);
}
.btn-primary {
  display: inline-block; padding: 12px 36px;
  background: var(--gradient-primary); color: #fff;
  border-radius: 30px; font-size: 1rem; font-weight: 600;
  border: none; cursor: pointer; transition: var(--transition);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(232,54,79,0.4); color: #fff; }
.btn-outline {
  display: inline-block; padding: 12px 36px;
  background: transparent; color: var(--tiger-red);
  border: 2px solid var(--tiger-red); border-radius: 30px;
  font-size: 1rem; font-weight: 600; cursor: pointer;
  transition: var(--transition);
}
.btn-outline:hover { background: var(--tiger-red); color: #fff; }
.hero-btns { display: flex; gap: 16px; justify-content: center; }

/* ============ Section Common ============ */
.section { padding: 70px 0; }
.section-dark { background: var(--deep-night); }
.section-title {
  text-align: center; margin-bottom: 48px;
}
.section-title h2 {
  font-size: 2rem; font-weight: 700; margin-bottom: 12px;
  color: var(--light-text);
}
.section-title h2 .highlight { color: var(--tiger-red); }
.section-title p { color: rgba(240,240,245,0.6); font-size: 1rem; max-width: 600px; margin: 0 auto; }
.title-line {
  width: 60px; height: 3px; background: var(--gradient-primary);
  margin: 12px auto 0; border-radius: 2px;
}

/* ============ Video Card ============ */
.video-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.video-card {
  background: var(--card-bg); border-radius: var(--radius-md);
  overflow: hidden; transition: var(--transition);
  border: 1px solid transparent;
}
.video-card:hover {
  transform: translateY(-4px); border-color: var(--tiger-red);
  box-shadow: var(--shadow-hover);
}
.video-thumb {
  position: relative; padding-top: 56.25%; overflow: hidden;
}
.video-thumb img {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  object-fit: cover; transition: var(--transition);
}
.video-card:hover .video-thumb img { transform: scale(1.05); }
.play-btn {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 56px; height: 56px; background: rgba(232,54,79,0.9);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: var(--transition); z-index: 2;
}
.play-btn::after {
  content: ''; width: 0; height: 0;
  border-top: 10px solid transparent; border-bottom: 10px solid transparent;
  border-left: 16px solid #fff; margin-left: 3px;
}
.video-card:hover .play-btn { opacity: 1; }
.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: 0.75rem;
}
.video-info { padding: 14px; }
.video-info h3 { font-size: 0.95rem; font-weight: 600; margin-bottom: 8px; line-height: 1.4; color: var(--light-text); }
.video-meta { display: flex; align-items: center; gap: 12px; font-size: 0.8rem; color: rgba(240,240,245,0.5); }
.video-meta span { display: flex; align-items: center; gap: 4px; }

/* ============ Feature Grid ============ */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: var(--card-bg); border-radius: var(--radius-md);
  padding: 32px 24px; text-align: center; transition: var(--transition);
  border: 1px solid transparent;
}
.feature-card:hover {
  border-color: var(--tiger-red); transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.feature-icon {
  width: 64px; height: 64px; margin: 0 auto 18px;
  background: var(--gradient-primary); border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem;
}
.feature-card h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 10px; }
.feature-card p { font-size: 0.9rem; color: rgba(240,240,245,0.6); line-height: 1.6; }

/* ============ Expert Section ============ */
.gymytn { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.uf1nj6 {
  background: var(--card-bg); border-radius: var(--radius-md);
  padding: 28px 20px; text-align: center; transition: var(--transition);
  border: 1px solid transparent;
}
.uf1nj6:hover { border-color: var(--vibrant-orange); box-shadow: var(--shadow-hover); }
.go8e6 {
  width: 96px; height: 96px; border-radius: 50%; margin: 0 auto 14px;
  object-fit: cover; border: 3px solid var(--tiger-red);
}
.uf1nj6 h4 { font-size: 1.05rem; font-weight: 600; margin-bottom: 4px; }
.uf1nj6 .role { color: var(--tiger-red); font-size: 0.85rem; margin-bottom: 10px; }
.uf1nj6 p { font-size: 0.85rem; color: rgba(240,240,245,0.55); line-height: 1.5; margin-bottom: 14px; }
.d9cesvit { display: flex; gap: 10px; justify-content: center; }
.d9cesvit a {
  padding: 6px 14px; border-radius: 20px; font-size: 0.8rem;
  border: 1px solid var(--tiger-red); color: var(--tiger-red);
}
.d9cesvit a:hover { background: var(--tiger-red); color: #fff; }

/* ============ Community Section ============ */
.y0a8w4h { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.vfda00o {
  background: var(--card-bg); border-radius: var(--radius-md);
  overflow: hidden; display: flex; transition: var(--transition);
  border: 1px solid transparent;
}
.vfda00o:hover { border-color: var(--tiger-red); }
.vfda00o img { width: 200px; min-height: 180px; object-fit: cover; }
.vfda00o .xp7b5jpg { padding: 20px; flex: 1; }
.vfda00o h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 8px; }
.vfda00o p { font-size: 0.88rem; color: rgba(240,240,245,0.6); }

/* ============ FAQ Section ============ */
.27e2x4 { max-width: 800px; margin: 0 auto; }
.rsu3zd {
  background: var(--card-bg); border-radius: var(--radius-md);
  margin-bottom: 12px; overflow: hidden;
  border: 1px solid var(--border-subtle);
}
.y7hqz {
  padding: 18px 24px; cursor: pointer; display: flex;
  justify-content: space-between; align-items: center;
  font-weight: 600; font-size: 0.95rem; transition: var(--transition);
}
.y7hqz:hover { color: var(--tiger-red); }
.y7hqz .arrow { transition: var(--transition); font-size: 0.8rem; }
.rsu3zd.active .y7hqz .arrow { transform: rotate(180deg); }
.m9dx2 {
  max-height: 0; overflow: hidden; transition: max-height 0.3s ease;
}
.zczq9ocx {
  padding: 0 24px 18px; font-size: 0.9rem;
  color: rgba(240,240,245,0.6); line-height: 1.7;
}
.rsu3zd.active .m9dx2 { max-height: 300px; }

/* ============ Reviews Section ============ */
.17m6pv { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.bqu07 {
  background: var(--card-bg); border-radius: var(--radius-md);
  padding: 24px; border: 1px solid var(--border-subtle);
}
.i7y4s55p { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.jmx8e {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--gradient-primary); display: flex;
  align-items: center; justify-content: center;
  font-weight: 700; font-size: 1rem; color: #fff;
}
.yh1p2m { font-weight: 600; font-size: 0.95rem; }
.sll3jw { font-size: 0.8rem; color: rgba(240,240,245,0.4); }
.bm4puq { color: #FFD700; font-size: 0.85rem; margin-bottom: 10px; }
.bqu07 p { font-size: 0.9rem; color: rgba(240,240,245,0.65); line-height: 1.6; }

/* ============ Partners ============ */
.nryl6ot {
  width: 100%; border-radius: var(--radius-md);
  opacity: 0.8; transition: var(--transition);
}
.nryl6ot:hover { opacity: 1; }

/* ============ Contact Section ============ */
.18ryfzg { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.o054q {
  background: var(--card-bg); border-radius: var(--radius-md);
  padding: 28px; text-align: center;
  border: 1px solid var(--border-subtle);
}
.o054q h4 { font-size: 1.05rem; font-weight: 600; margin-bottom: 14px; color: var(--tiger-red); }
.o054q p { font-size: 0.9rem; color: rgba(240,240,245,0.6); line-height: 1.8; }
.o054q img { max-width: 160px; margin: 12px auto 0; border-radius: var(--radius-sm); }

/* ============ How-To Section ============ */
.0c2r2 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.suw32 {
  text-align: center; padding: 24px 16px;
  background: var(--card-bg); border-radius: var(--radius-md);
}
.faqez {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--gradient-primary); display: flex;
  align-items: center; justify-content: center;
  font-size: 1.3rem; font-weight: 800; color: #fff;
  margin: 0 auto 14px;
}
.suw32 h4 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; }
.suw32 p { font-size: 0.85rem; color: rgba(240,240,245,0.55); }

/* ============ Share Buttons ============ */
.wdh18pak { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; padding: 20px 0; }
.n0k6tf0 {
  padding: 8px 20px; border-radius: 20px; font-size: 0.85rem;
  font-weight: 500; border: 1px solid var(--border-subtle);
  background: var(--card-bg); color: var(--light-text);
  cursor: pointer; transition: var(--transition);
}
.n0k6tf0:hover { background: var(--tiger-red); border-color: var(--tiger-red); color: #fff; }

/* ============ Footer ============ */
.site-footer {
  background: var(--deep-night); border-top: 1px solid var(--border-subtle);
  padding: 48px 0 24px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
.footer-brand .site-logo { margin-bottom: 14px; }
.footer-brand p { font-size: 0.88rem; color: rgba(240,240,245,0.5); line-height: 1.6; }
.footer-col h5 { font-size: 1rem; font-weight: 600; margin-bottom: 14px; color: var(--light-text); }
.footer-col a { display: block; padding: 4px 0; font-size: 0.88rem; color: rgba(240,240,245,0.5); }
.footer-col a:hover { color: var(--tiger-red); }
.footer-qr { display: flex; gap: 20px; }
.footer-qr img { width: 110px; border-radius: var(--radius-sm); }
.footer-bottom {
  border-top: 1px solid var(--border-subtle); padding-top: 20px;
  text-align: center; font-size: 0.82rem; color: rgba(240,240,245,0.35);
}
.footer-bottom a { color: rgba(240,240,245,0.5); }

/* ============ Breadcrumb ============ */
.breadcrumb {
  padding: 14px 0; font-size: 0.85rem;
  color: rgba(240,240,245,0.5); margin-top: 68px;
}
.breadcrumb a { color: rgba(240,240,245,0.6); }
.breadcrumb a:hover { color: var(--tiger-red); }
.breadcrumb span { margin: 0 8px; }

/* ============ Inner Page Hero ============ */
.inner-hero {
  margin-top: 68px; padding: 60px 0; text-align: center;
  background: var(--gradient-dark);
  border-bottom: 1px solid var(--border-subtle);
}
.inner-hero h1 { font-size: 2.2rem; font-weight: 700; margin-bottom: 12px; }
.inner-hero p { font-size: 1rem; color: rgba(240,240,245,0.6); max-width: 600px; margin: 0 auto; }

/* ============ Lazy Loading ============ */
img[loading="lazy"] { opacity: 0; transition: opacity 0.4s 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; }

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  .video-grid { grid-template-columns: repeat(3, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .gymytn { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .0c2r2 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .main-nav { display: none; position: fixed; top: 68px; left: 0; width: 100%;
    background: rgba(13,13,26,0.98); flex-direction: column; padding: 20px;
    gap: 4px; border-bottom: 1px solid var(--border-subtle);
  }
  .main-nav.open { display: flex; }
  .mobile-toggle { display: block; }
  .nav-search { display: none; }
  .hero-section { height: 420px; }
  .hero-content h1 { font-size: 1.8rem; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: 1fr; }
  .gymytn { grid-template-columns: 1fr; }
  .y0a8w4h { grid-template-columns: 1fr; }
  .vfda00o { flex-direction: column; }
  .vfda00o img { width: 100%; height: 160px; }
  .18ryfzg { grid-template-columns: 1fr; }
  .17m6pv { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .0c2r2 { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; align-items: center; }
  .section { padding: 48px 0; }
  .section-title h2 { font-size: 1.5rem; }
}
@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .header-inner { padding: 0 12px; }
  .container { padding: 0 12px; }
}

/* ============ Utility ============ */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }
.mt-40 { margin-top: 40px; }
.mb-40 { margin-bottom: 40px; }