/* =============================================
   91 修车改装视频社区 - 全局样式
   asqhva.cn | 原创配色：深黑+赛车红+金属银
   ============================================= */

/* CSS 变量 */
:root {
  --red: #e01020;
  --red-dark: #a00010;
  --red-light: #ff3040;
  --gold: #c8a040;
  --gold-light: #e8c060;
  --dark: #111418;
  --dark2: #181c22;
  --dark3: #242830;
  --dark4: #303540;
  --white: #f0f2f5;
  --gray: #8a9099;
  --gray-light: #b0b8c4;
  --font-main: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  --transition: all 0.22s ease;
  --shadow: 0 4px 20px rgba(0,0,0,0.5);
  --radius: 8px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--dark);
  color: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--red-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--gold-light); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
h1,h2,h3,h4,h5,h6 { line-height: 1.3; font-weight: 700; }
p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

/* 干扰标签隐藏 */
.qn-noise {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  clip: rect(0,0,0,0) !important;
  white-space: nowrap !important;
  border: 0 !important;
  padding: 0 !important;
  margin: -1px !important;
  pointer-events: none !important;
  opacity: 0 !important;
  z-index: -9999 !important;
}

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

/* ===== Top Bar ===== */
.top-bar {
  background: var(--dark2);
  border-bottom: 1px solid var(--dark3);
  padding: 7px 0;
  font-size: .8rem;
  color: var(--gray);
}
.top-bar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.top-bar a { color: var(--gray); }
.top-bar a:hover { color: var(--red-light); }
.top-bar strong { color: var(--red-light); }

/* ===== Header ===== */
.site-header {
  background: var(--dark2);
  border-bottom: 2px solid var(--red);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 16px rgba(224,16,32,0.15);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 12px 0;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--white);
}
.site-logo img { border-radius: 6px; }
.logo-text .brand {
  display: block;
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--red-light);
  letter-spacing: -0.5px;
  line-height: 1.1;
}
.logo-text .tagline {
  display: block;
  font-size: .7rem;
  color: var(--gray);
  letter-spacing: 0.5px;
}
.header-search { flex: 1; max-width: 360px; }
.header-search .search-form { display: flex; }
.header-search input {
  flex: 1;
  background: var(--dark3);
  border: 1px solid var(--dark4);
  border-right: none;
  color: var(--white);
  padding: 8px 14px;
  border-radius: 4px 0 0 4px;
  font-size: .88rem;
  outline: none;
  transition: var(--transition);
}
.header-search input:focus { border-color: var(--red); }
.header-search button {
  background: var(--red);
  border: none;
  color: #fff;
  padding: 8px 14px;
  border-radius: 0 4px 4px 0;
  cursor: pointer;
  font-size: 1rem;
  transition: var(--transition);
}
.header-search button:hover { background: var(--red-dark); }

/* ===== Navigation ===== */
.main-nav { margin-left: auto; }
.nav-list { display: flex; align-items: center; gap: 4px; }
.nav-list > li { position: relative; }
.nav-list > li > a {
  display: block;
  padding: 8px 12px;
  color: var(--gray-light);
  font-size: .88rem;
  font-weight: 500;
  border-radius: 4px;
  transition: var(--transition);
  white-space: nowrap;
}
.nav-list > li > a:hover,
.nav-list > li.active > a { color: var(--red-light); background: rgba(224,16,32,0.08); }
.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--dark2);
  border: 1px solid var(--dark3);
  border-radius: 6px;
  min-width: 160px;
  box-shadow: var(--shadow);
  z-index: 100;
}
.dropdown:hover .dropdown-menu { display: block; }
.dropdown-menu li a {
  display: block;
  padding: 10px 16px;
  color: var(--gray-light);
  font-size: .85rem;
  transition: var(--transition);
}
.dropdown-menu li a:hover { color: var(--red-light); background: rgba(224,16,32,0.08); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Search Bar ===== */
.nav-search-bar {
  background: var(--dark2);
  border-bottom: 1px solid var(--dark3);
  padding: 10px 0;
}
.search-inner { display: flex; }
.search-inner input {
  flex: 1;
  background: var(--dark3);
  border: 1px solid var(--dark4);
  border-right: none;
  color: var(--white);
  padding: 10px 16px;
  border-radius: 4px 0 0 4px;
  font-size: .9rem;
  outline: none;
  transition: var(--transition);
}
.search-inner input:focus { border-color: var(--red); }
.search-btn {
  background: var(--red);
  border: none;
  color: #fff;
  padding: 10px 24px;
  border-radius: 0 4px 4px 0;
  cursor: pointer;
  font-size: .9rem;
  font-weight: 600;
  transition: var(--transition);
}
.search-btn:hover { background: var(--red-dark); }
.search-hot-tags { margin-top: 8px; font-size: .82rem; color: var(--gray); }
.search-hot-tags a { color: var(--gray); margin-right: 10px; }
.search-hot-tags a:hover { color: var(--red-light); }

/* ===== Breadcrumb ===== */
.breadcrumb-nav {
  background: var(--dark2);
  border-bottom: 1px solid var(--dark3);
  padding: 10px 0;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: .82rem;
  color: var(--gray);
}
.breadcrumb li::after { content: ' /'; margin-left: 6px; color: var(--dark4); }
.breadcrumb li:last-child::after { display: none; }
.breadcrumb a { color: var(--gray); }
.breadcrumb a:hover { color: var(--red-light); }

/* ===== Page Header ===== */
.page-header {
  background: linear-gradient(135deg, var(--dark2) 0%, var(--red-dark) 100%);
  padding: 50px 0;
  border-bottom: 2px solid var(--red);
}
.page-header h1 { font-size: 2rem; margin-bottom: 10px; }
.page-header p { color: var(--gray-light); font-size: 1rem; }

/* ===== Hero Banner ===== */
.hero-banner {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url('../images/banner_main.jpg') center/cover no-repeat;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,12,16,0.92) 0%, rgba(160,0,16,0.5) 100%);
  z-index: 1;
}
.hero-banner .container { position: relative; z-index: 2; }
.hero-content { max-width: 680px; padding: 60px 0; }
.eyebrow {
  font-size: .82rem;
  color: var(--red-light);
  letter-spacing: 1px;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.hero-content h1 {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--white);
}
.hero-content h1 .accent { color: var(--red-light); }
.hero-desc { font-size: 1.05rem; color: var(--gray-light); margin-bottom: 28px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-stats { display: flex; gap: 32px; flex-wrap: wrap; }
.hero-stat .num { font-size: 1.8rem; font-weight: 900; color: var(--red-light); }
.hero-stat .label { font-size: .78rem; color: var(--gray); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 11px 22px;
  border-radius: 4px;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--red-dark); color: #fff; }
.btn-outline { background: transparent; color: var(--white); border: 1px solid var(--dark4); }
.btn-outline:hover { border-color: var(--red); color: var(--red-light); }

/* ===== Stats Bar ===== */
.stats-bar {
  background: linear-gradient(90deg, var(--red-dark) 0%, var(--dark2) 100%);
  border-top: 1px solid var(--red);
  border-bottom: 1px solid var(--dark3);
  padding: 20px 0;
}
.stats-grid { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 20px; }
.stat-item { text-align: center; }
.stat-item .num { font-size: 1.6rem; font-weight: 900; color: var(--white); }
.stat-item .label { font-size: .78rem; color: rgba(255,255,255,0.6); }

/* ===== Section ===== */
.section { padding: 70px 0; }
.section-alt { background: var(--dark2); }
.section-title { text-align: center; margin-bottom: 40px; }
.section-title h2 { font-size: 1.8rem; margin-bottom: 10px; }
.section-title p { color: var(--gray); font-size: .95rem; }

/* ===== Feature Grid ===== */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.feature-card {
  background: var(--dark);
  border: 1px solid var(--dark3);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}
.feature-card:hover { border-color: var(--red); transform: translateY(-2px); }
.feature-icon { font-size: 2rem; margin-bottom: 14px; }
.feature-card h3 { font-size: 1rem; margin-bottom: 10px; color: var(--white); }
.feature-card p { font-size: .88rem; color: var(--gray); margin: 0; }

/* ===== Video Grid ===== */
.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.video-card {
  background: var(--dark2);
  border: 1px solid var(--dark3);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}
.video-card:hover { border-color: var(--red); transform: translateY(-3px); box-shadow: 0 8px 30px rgba(224,16,32,0.2); }
.video-thumb { position: relative; aspect-ratio: 16/9; overflow: hidden; background: var(--dark3); }
.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-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .play-overlay { opacity: 1; }
.play-btn-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(224,16,32,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease;
}
.video-card:hover .play-btn-circle { transform: scale(1.1); }
.play-btn-circle svg { width: 22px; height: 22px; fill: #fff; margin-left: 3px; }
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.8);
  color: #fff;
  font-size: .75rem;
  padding: 2px 6px;
  border-radius: 3px;
}
.video-tag { position: absolute; top: 8px; left: 8px; }
.video-info { padding: 14px; }
.video-info h3, .video-info h4 { font-size: .9rem; margin-bottom: 8px; color: var(--white); line-height: 1.4; }
.video-meta { display: flex; gap: 10px; font-size: .78rem; color: var(--gray); flex-wrap: wrap; }
.video-meta .views::before { content: '▶ '; }
.video-meta .likes::before { content: '♥ '; }
.video-meta .comments::before { content: '💬 '; }

/* ===== Badges ===== */
.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 3px;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.badge-red { background: var(--red); color: #fff; }
.badge-gold { background: var(--gold); color: #fff; }
.badge-dark { background: var(--dark4); color: var(--gray-light); }

/* ===== Tags ===== */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  background: var(--dark3);
  border: 1px solid var(--dark4);
  color: var(--gray-light);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: .78rem;
  transition: var(--transition);
}
.tag:hover { border-color: var(--red); color: var(--red-light); }

/* ===== Expert Grid ===== */
.expert-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.expert-card {
  background: var(--dark2);
  border: 1px solid var(--dark3);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.expert-card:hover { border-color: var(--red); }
.expert-photo { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.expert-body { padding: 20px; }
.expert-body h3 { font-size: 1.1rem; margin-bottom: 4px; }
.expert-body .role { font-size: .82rem; color: var(--red-light); margin-bottom: 12px; }
.expert-body p { font-size: .85rem; color: var(--gray); margin-bottom: 12px; }
.expert-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.expert-actions { display: flex; gap: 10px; }

/* ===== Partner Grid ===== */
.partner-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.partner-item {
  background: var(--dark2);
  border: 1px solid var(--dark3);
  border-radius: 6px;
  padding: 16px;
  text-align: center;
  font-size: .88rem;
  font-weight: 600;
  color: var(--gray-light);
  transition: var(--transition);
}
.partner-item:hover { border-color: var(--red); color: var(--red-light); }

/* ===== Join Steps ===== */
.join-steps { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px; }
.join-step {
  background: var(--dark2);
  border: 1px solid var(--dark3);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}
.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  font-size: 1.2rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
}
.join-step h4 { margin-bottom: 8px; font-size: .95rem; }
.join-step p { font-size: .85rem; color: var(--gray); margin: 0; }

/* ===== Contact ===== */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.contact-card {
  background: var(--dark);
  border: 1px solid var(--dark3);
  border-radius: var(--radius);
  padding: 24px;
}
.contact-card h4 { margin-bottom: 16px; font-size: 1rem; color: var(--red-light); }
.contact-item { display: flex; gap: 10px; margin-bottom: 10px; font-size: .88rem; color: var(--gray-light); }
.contact-icon { flex-shrink: 0; }
.qrcode-group { display: flex; gap: 16px; margin-top: 16px; }
.qrcode-item { text-align: center; }
.qrcode-item img { border-radius: 6px; border: 1px solid var(--dark3); }
.qrcode-item span { display: block; font-size: .75rem; color: var(--gray); margin-top: 6px; }

/* ===== Reviews ===== */
.review-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.review-card {
  background: var(--dark2);
  border: 1px solid var(--dark3);
  border-radius: var(--radius);
  padding: 22px;
}
.review-stars { color: var(--gold); font-size: 1rem; margin-bottom: 12px; }
.review-text { font-size: .88rem; color: var(--gray-light); margin-bottom: 16px; line-height: 1.6; }
.reviewer { display: flex; align-items: center; gap: 12px; }
.reviewer-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--red);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}
.reviewer-info .name { font-size: .88rem; font-weight: 600; }
.reviewer-info .date { font-size: .78rem; color: var(--gray); }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--dark3);
  border-radius: var(--radius);
  margin-bottom: 10px;
  overflow: hidden;
}
.faq-question {
  padding: 18px 20px;
  background: var(--dark2);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .95rem;
  font-weight: 600;
  transition: var(--transition);
}
.faq-question:hover { color: var(--red-light); }
.faq-item.open .faq-question { color: var(--red-light); background: rgba(224,16,32,0.08); }
.faq-arrow { font-size: .7rem; transition: transform 0.2s; }
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-answer {
  display: none;
  padding: 16px 20px;
  font-size: .88rem;
  color: var(--gray-light);
  background: var(--dark);
  line-height: 1.7;
}
.faq-item.open .faq-answer { display: block; }

/* ===== Tab ===== */
.tab-wrapper { margin-top: 20px; }
.tab-nav { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 24px; border-bottom: 1px solid var(--dark3); padding-bottom: 12px; }
.tab-btn {
  background: var(--dark2);
  border: 1px solid var(--dark3);
  color: var(--gray-light);
  padding: 8px 16px;
  border-radius: 4px;
  font-size: .85rem;
  cursor: pointer;
  transition: var(--transition);
}
.tab-btn:hover, .tab-btn.active { background: var(--red); border-color: var(--red); color: #fff; }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ===== Filter Bar ===== */
.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 16px; }
.filter-label { font-size: .85rem; color: var(--gray); }
.filter-btn {
  background: var(--dark2);
  border: 1px solid var(--dark3);
  color: var(--gray-light);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: .82rem;
  cursor: pointer;
  transition: var(--transition);
}
.filter-btn:hover, .filter-btn.active { background: var(--red); border-color: var(--red); color: #fff; }

/* ===== Pagination ===== */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; flex-wrap: wrap; }
.page-btn {
  background: var(--dark2);
  border: 1px solid var(--dark3);
  color: var(--gray-light);
  padding: 8px 14px;
  border-radius: 4px;
  font-size: .85rem;
  cursor: pointer;
  transition: var(--transition);
}
.page-btn:hover, .page-btn.active { background: var(--red); border-color: var(--red); color: #fff; }

/* ===== Social Share ===== */
.social-share { display: flex; gap: 10px; flex-wrap: wrap; }
.share-btn {
  padding: 8px 14px;
  border-radius: 4px;
  font-size: .82rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--dark4);
  color: var(--gray-light);
  background: var(--dark2);
}
.share-btn:hover { border-color: var(--red); color: var(--red-light); }

/* ===== Video Modal ===== */
.video-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.video-modal.active { display: flex; }
.modal-inner {
  background: var(--dark2);
  border: 1px solid var(--dark3);
  border-radius: var(--radius);
  max-width: 800px;
  width: 100%;
  position: relative;
  overflow: hidden;
}
.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(0,0,0,0.6);
  border: none;
  color: #fff;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1rem;
  z-index: 10;
  transition: var(--transition);
}
.modal-close:hover { background: var(--red); }
.modal-video-wrap { background: #000; }
.modal-video-wrap video { width: 100%; aspect-ratio: 16/9; display: block; }
.modal-info { padding: 16px 20px; }
.modal-title { font-size: 1rem; margin-bottom: 6px; }
.modal-desc { font-size: .85rem; color: var(--gray); margin: 0; }

/* ===== Footer ===== */
.site-footer { background: var(--dark2); border-top: 2px solid var(--red); padding: 50px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .brand-name { font-size: 1.4rem; font-weight: 900; color: var(--red-light); margin-bottom: 12px; }
.footer-brand p { font-size: .85rem; color: var(--gray); }
.footer-col h5 { font-size: .9rem; color: var(--white); margin-bottom: 14px; padding-bottom: 8px; border-bottom: 1px solid var(--dark3); }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: .85rem; color: var(--gray); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--red-light); }
.footer-bottom {
  background: var(--dark);
  border-top: 1px solid var(--dark3);
  padding: 16px 0;
}
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: .8rem;
  color: var(--gray);
}
.footer-bottom-inner a { color: var(--gray); }
.footer-bottom-inner a:hover { color: var(--red-light); }
.update-time { color: var(--gold); }

/* ===== Scroll Animation ===== */
.anim-fade { opacity: 0; transform: translateY(20px); transition: opacity 0.5s ease, transform 0.5s ease; }
.anim-fade.visible { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-content h1 { font-size: 2.2rem; }
}
@media (max-width: 768px) {
  .header-inner { flex-wrap: wrap; }
  .header-search { order: 3; width: 100%; max-width: 100%; }
  .main-nav {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 280px;
    background: var(--dark2);
    border-left: 1px solid var(--dark3);
    padding: 60px 20px 20px;
    z-index: 2000;
    overflow-y: auto;
  }
  .main-nav.open { display: block; }
  .nav-list { flex-direction: column; gap: 0; }
  .nav-list > li > a { padding: 12px 8px; border-bottom: 1px solid var(--dark3); }
  .nav-toggle { display: flex; }
  .dropdown-menu { position: static; display: none; box-shadow: none; border: none; border-left: 2px solid var(--red); margin-left: 12px; }
  .dropdown.open .dropdown-menu { display: block; }
  .hero-content h1 { font-size: 1.8rem; }
  .hero-banner { min-height: 400px; }
  .hero-stats { gap: 16px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
  .section { padding: 40px 0; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .expert-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .top-bar .container { flex-direction: column; gap: 4px; }
}
@media (max-width: 480px) {
  .hero-content h1 { font-size: 1.5rem; }
  .hero-actions { flex-direction: column; }
  .btn { justify-content: center; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: 1fr; }
  .join-steps { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
}