/* ============================================
   溏心 原创样式表
   品牌色系：玫瑰粉 #E8456B + 深靛蓝 #1A1F3D
   辅助色：暖橙 #F5A623 + 浅粉 #FFF0F3
   ============================================ */

/* === Reset & Base === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:#2D2D3A;background:#FAFBFE;line-height:1.7;overflow-x:hidden}
a{color:#E8456B;text-decoration:none;transition:color .25s}
a:hover{color:#C93358}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.35;color:#1A1F3D}

/* === Layout === */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:60px 0}
.section:nth-child(even){background:#FFF}
.section-header{text-align:center;margin-bottom:48px}
.section-title{font-size:1.875rem;margin-bottom:12px;position:relative;display:inline-block}
.section-title::after{content:'';display:block;width:60px;height:3px;background:linear-gradient(90deg,#E8456B,#F5A623);margin:12px auto 0;border-radius:2px}
.section-desc{color:#6B7280;font-size:1rem;max-width:680px;margin:0 auto}

/* === Header === */
.site-header{background:#1A1F3D;position:sticky;top:0;z-index:1000;box-shadow:0 2px 12px rgba(26,31,61,.15)}
.header-inner{display:flex;align-items:center;justify-content:space-between;max-width:1200px;margin:0 auto;padding:0 20px;height:64px}
.logo-link{display:flex;align-items:center;flex-shrink:0}
.logo-img{height:40px;width:auto}
.main-nav .nav-list{display:flex;gap:4px}
.nav-item{display:inline-block;padding:8px 16px;color:#C9CDD8;font-size:.9rem;border-radius:6px;transition:all .25s}
.nav-item:hover,.nav-item.active{color:#FFF;background:rgba(232,69,107,.2)}
.nav-item.active{background:#E8456B;color:#FFF}
.header-search{position:relative}
.search-form{display:flex;align-items:center;background:rgba(255,255,255,.1);border-radius:20px;overflow:hidden}
.search-input{background:transparent;border:none;color:#FFF;padding:6px 14px;font-size:.85rem;width:180px;outline:none}
.search-input::placeholder{color:#8B90A0}
.search-btn{background:none;border:none;color:#C9CDD8;padding:6px 12px;cursor:pointer}
.search-btn:hover{color:#E8456B}
.mobile-menu-btn{display:none;background:none;border:none;cursor:pointer;padding:6px}
.mobile-menu-btn span{display:block;width:22px;height:2px;background:#FFF;margin:5px 0;border-radius:1px;transition:all .3s}

/* === Hero Section === */
.hero-section{position:relative;min-height:520px;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.45)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(26,31,61,.85) 0%,rgba(232,69,107,.4) 100%)}
.hero-content{position:relative;z-index:2;max-width:1200px;margin:0 auto;padding:80px 20px;text-align:center;color:#FFF}
.hero-title{font-size:2.5rem;margin-bottom:16px;text-shadow:0 2px 8px rgba(0,0,0,.3)}
.hero-subtitle{font-size:1.1rem;color:rgba(255,255,255,.85);max-width:720px;margin:0 auto 32px;line-height:1.8}
.hero-actions{display:flex;gap:16px;justify-content:center;margin-bottom:40px}
.hero-stats{display:flex;gap:48px;justify-content:center}
.stat-item{text-align:center}
.stat-num{display:block;font-size:1.75rem;font-weight:800;color:#F5A623}
.stat-label{font-size:.85rem;color:rgba(255,255,255,.7)}

/* === Buttons === */
.btn{display:inline-block;padding:12px 28px;border-radius:8px;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .3s;border:2px solid transparent}
.btn-primary{background:#E8456B;color:#FFF;border-color:#E8456B}
.btn-primary:hover{background:#C93358;border-color:#C93358;color:#FFF;transform:translateY(-2px);box-shadow:0 4px 16px rgba(232,69,107,.35)}
.btn-outline{background:transparent;color:#FFF;border-color:rgba(255,255,255,.5)}
.btn-outline:hover{background:rgba(255,255,255,.15);border-color:#FFF;color:#FFF}
.btn-secondary{background:#1A1F3D;color:#FFF;border-color:#1A1F3D}
.btn-secondary:hover{background:#2A3055;color:#FFF}

/* === Video Cards === */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.video-card{background:#FFF;border-radius:12px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.06);transition:all .35s}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 32px rgba(0,0,0,.12)}
.video-link{display:block;color:inherit}
.video-link:hover{color:inherit}
.video-thumb{position:relative;overflow:hidden;aspect-ratio:16/9;background:#1A1F3D}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .video-thumb img{transform:scale(1.06)}
.video-play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);opacity:0;transition:opacity .35s}
.video-card:hover .video-play-btn{opacity:1}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#FFF;padding:2px 8px;border-radius:4px;font-size:.75rem}
.video-info{padding:14px 16px}
.video-title{font-size:.95rem;font-weight:600;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:12px;font-size:.78rem;color:#9CA3AF;flex-wrap:wrap}
.video-desc{font-size:.82rem;color:#6B7280;margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.section-more{text-align:center;margin-top:36px}

/* === Media Section === */
.media-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.media-card{background:#FFF;border-radius:12px;padding:32px 24px;text-align:center;box-shadow:0 2px 12px rgba(0,0,0,.05);transition:all .3s;border:1px solid #F0F1F5}
.media-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(232,69,107,.1);border-color:#E8456B}
.media-icon{width:72px;height:72px;margin:0 auto 20px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#FFF0F3,#FDE8EC);border-radius:16px;color:#E8456B}
.media-card h3{font-size:1.05rem;margin-bottom:10px}
.media-card p{font-size:.88rem;color:#6B7280;line-height:1.7}

/* === AI Section === */
.ai-section{background:linear-gradient(135deg,#1A1F3D 0%,#2D1B4E 100%);color:#FFF}
.ai-section .section-title{color:#FFF}
.ai-section .section-title::after{background:linear-gradient(90deg,#E8456B,#F5A623)}
.ai-section .section-desc{color:rgba(255,255,255,.7)}
.ai-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.ai-image{border-radius:12px;overflow:hidden;box-shadow:0 8px 32px rgba(0,0,0,.3)}
.ai-image img{width:100%;display:block}
.ai-content .section-title{text-align:left}
.ai-content .section-title::after{margin:12px 0 0}
.ai-content .section-desc{text-align:left;margin:0 0 28px}
.ai-features{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.ai-feature{background:rgba(255,255,255,.08);border-radius:10px;padding:20px;border:1px solid rgba(255,255,255,.1);transition:all .3s}
.ai-feature:hover{background:rgba(232,69,107,.15);border-color:rgba(232,69,107,.3)}
.ai-feature h4{font-size:.95rem;margin-bottom:8px;color:#F5A623}
.ai-feature p{font-size:.82rem;color:rgba(255,255,255,.7);line-height:1.6}

/* === Entertainment Section === */
.ent-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.ent-card{position:relative;border-radius:12px;overflow:hidden;aspect-ratio:16/9}
.ent-card.ent-large{grid-column:1;grid-row:1/3;aspect-ratio:auto}
.ent-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.ent-card:hover img{transform:scale(1.05)}
.ent-overlay{position:absolute;bottom:0;left:0;right:0;padding:20px;background:linear-gradient(transparent,rgba(0,0,0,.8));color:#FFF}
.ent-tag{display:inline-block;background:#E8456B;color:#FFF;padding:3px 10px;border-radius:4px;font-size:.75rem;margin-bottom:8px}
.ent-overlay h3{font-size:1rem;margin-bottom:4px}
.ent-overlay p{font-size:.82rem;color:rgba(255,255,255,.8);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* === Expert Section === */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#FFF;border-radius:12px;padding:32px 20px;text-align:center;box-shadow:0 2px 12px rgba(0,0,0,.05);transition:all .3s}
.expert-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,.1)}
.expert-card img{width:120px;height:120px;border-radius:50%;object-fit:cover;margin:0 auto 16px;border:3px solid #FDE8EC}
.expert-card h3{font-size:1.05rem;margin-bottom:4px}
.expert-role{color:#E8456B;font-size:.85rem;margin-bottom:10px}
.expert-bio{font-size:.82rem;color:#6B7280;line-height:1.6}

/* === Community Section === */
.community-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.comm-card{background:#FFF;border-radius:12px;padding:28px 24px;text-align:center;box-shadow:0 2px 12px rgba(0,0,0,.05);transition:all .3s;border:1px solid #F0F1F5}
.comm-card:hover{border-color:#E8456B;box-shadow:0 8px 24px rgba(232,69,107,.1)}
.comm-icon{width:64px;height:64px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;background:#FFF0F3;border-radius:50%;color:#E8456B}
.comm-card h4{font-size:1rem;margin-bottom:8px}
.comm-card p{font-size:.85rem;color:#6B7280;line-height:1.6}

/* === Review Section === */
.review-section{background:linear-gradient(135deg,#FFF0F3 0%,#FFF8FA 100%)}
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.review-card{background:#FFF;border-radius:12px;padding:28px;box-shadow:0 2px 12px rgba(0,0,0,.05)}
.review-stars{color:#F5A623;font-size:1.2rem;margin-bottom:12px;letter-spacing:2px}
.review-text{font-size:.92rem;color:#4B5563;line-height:1.8;font-style:italic;margin-bottom:12px}
.review-author{font-size:.82rem;color:#9CA3AF}

/* === FAQ Section === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#FFF;border-radius:10px;margin-bottom:12px;box-shadow:0 1px 6px rgba(0,0,0,.04);overflow:hidden}
.faq-question{padding:18px 24px;cursor:pointer;font-weight:600;display:flex;align-items:center;justify-content:space-between}
.faq-question h3{font-size:1rem;margin:0}
.faq-question::after{content:'+';font-size:1.4rem;color:#E8456B;transition:transform .3s}
.faq-item[open] .faq-question::after{content:'-'}
.faq-answer{padding:0 24px 18px;font-size:.9rem;color:#6B7280;line-height:1.8}

/* === CTA Section === */
.cta-section{background:linear-gradient(135deg,#E8456B 0%,#1A1F3D 100%);color:#FFF;text-align:center;padding:72px 0}
.cta-content h2{font-size:2rem;color:#FFF;margin-bottom:16px}
.cta-content p{font-size:1.05rem;color:rgba(255,255,255,.85);max-width:600px;margin:0 auto 32px}
.cta-actions{display:flex;gap:16px;justify-content:center}
.cta-section .btn-primary{background:#FFF;color:#E8456B;border-color:#FFF}
.cta-section .btn-primary:hover{background:rgba(255,255,255,.9);color:#C93358}

/* === Footer === */
.site-footer{background:#1A1F3D;color:#C9CDD8;padding-top:48px}
.footer-inner{max-width:1200px;margin:0 auto;padding:0 20px}
.footer-top{display:grid;grid-template-columns:1.2fr 2fr;gap:48px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{max-width:320px}
.footer-logo{height:36px;width:auto;margin-bottom:12px}
.footer-slogan{font-size:.95rem;color:#F5A623;margin-bottom:10px}
.footer-desc{font-size:.82rem;color:#8B90A0;line-height:1.7}
.footer-links{display:grid;grid-template-columns:1fr 1fr 1fr;gap:32px}
.footer-col h4{color:#FFF;font-size:.95rem;margin-bottom:14px}
.footer-col ul li{margin-bottom:8px}
.footer-col a{color:#8B90A0;font-size:.85rem;transition:color .25s}
.footer-col a:hover{color:#E8456B}
.footer-qrcode{text-align:center}
.footer-qrcode img{width:100px;height:100px;margin:0 auto 8px;border-radius:6px}
.footer-qrcode span{font-size:.78rem;color:#8B90A0}
.footer-bottom{padding:20px 0;text-align:center}
.copyright{font-size:.78rem;color:#6B7280;margin-bottom:6px}
.footer-seo{font-size:.72rem;color:#4B5563}

/* === Page Hero (Inner Pages) === */
.page-hero{background:#1A1F3D;color:#FFF;padding:48px 0;text-align:center}
.page-hero h1{font-size:2rem;color:#FFF;margin-bottom:12px}
.page-hero-desc{color:rgba(255,255,255,.75);font-size:1rem;max-width:680px;margin:0 auto}
.page-hero-videos{background:linear-gradient(135deg,#1A1F3D,#3D1A3D)}
.page-hero-movies{background:linear-gradient(135deg,#1A1F3D,#1A2F4D)}
.page-hero-creative{background:linear-gradient(135deg,#1A1F3D,#2D1B4E)}
.page-hero-community{background:linear-gradient(135deg,#1A1F3D,#4D1A2D)}
.page-hero-about{background:linear-gradient(135deg,#1A1F3D,#1A3D2D)}

/* === Filter Bar === */
.filter-bar{display:flex;align-items:center;gap:10px;margin-bottom:32px;flex-wrap:wrap;padding:16px;background:#FFF;border-radius:10px;box-shadow:0 1px 6px rgba(0,0,0,.04)}
.filter-label{font-size:.9rem;color:#6B7280;font-weight:600}
.filter-btn{background:#F3F4F6;border:none;padding:6px 16px;border-radius:20px;font-size:.85rem;cursor:pointer;transition:all .25s;color:#4B5563}
.filter-btn:hover,.filter-btn.active{background:#E8456B;color:#FFF}

/* === Pagination === */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:36px}
.page-item{display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:36px;padding:0 12px;border-radius:6px;background:#FFF;color:#4B5563;font-size:.88rem;box-shadow:0 1px 4px rgba(0,0,0,.06);transition:all .25s}
.page-item:hover,.page-item.active{background:#E8456B;color:#FFF}

/* === Content Block === */
.content-block{max-width:800px;margin:0 auto;background:#FFF;border-radius:12px;padding:40px;box-shadow:0 2px 12px rgba(0,0,0,.05)}
.content-block h2{font-size:1.5rem;margin-bottom:16px;color:#1A1F3D}
.content-block h3{font-size:1.2rem;margin:24px 0 12px;color:#1A1F3D}
.content-block p{font-size:.92rem;color:#4B5563;line-height:1.8;margin-bottom:14px}
.feature-list{padding-left:20px}
.feature-list li{position:relative;padding-left:20px;margin-bottom:10px;font-size:.9rem;color:#4B5563;line-height:1.7}
.feature-list li::before{content:'';position:absolute;left:0;top:10px;width:8px;height:8px;background:#E8456B;border-radius:50%}

/* === Movie Featured === */
.movie-featured{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;margin-bottom:48px;background:#FFF;border-radius:12px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.08)}
.movie-poster{position:relative;aspect-ratio:16/9}
.movie-poster img{width:100%;height:100%;object-fit:cover}
.movie-poster .video-play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);opacity:.8;transition:opacity .3s}
.movie-poster:hover .video-play-btn{opacity:1}
.movie-detail{padding:28px}
.movie-badge{display:inline-block;background:linear-gradient(90deg,#E8456B,#F5A623);color:#FFF;padding:4px 14px;border-radius:20px;font-size:.78rem;margin-bottom:12px}
.movie-detail h3{font-size:1.3rem;margin-bottom:10px}
.movie-meta{font-size:.82rem;color:#9CA3AF;margin-bottom:12px}
.movie-desc{font-size:.9rem;color:#6B7280;line-height:1.8;margin-bottom:16px}
.movie-tags{display:flex;gap:8px;flex-wrap:wrap}
.movie-tags span{background:#F3F4F6;padding:4px 12px;border-radius:4px;font-size:.78rem;color:#6B7280}

/* === Tool Cards === */
.tool-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.tool-card{background:#FFF;border-radius:12px;padding:32px;box-shadow:0 2px 12px rgba(0,0,0,.05);transition:all .3s;border:1px solid #F0F1F5}
.tool-card:hover{border-color:#E8456B;box-shadow:0 8px 24px rgba(232,69,107,.1)}
.tool-icon{width:64px;height:64px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#FFF0F3,#FDE8EC);border-radius:14px;color:#E8456B;margin-bottom:20px}
.tool-card h3{font-size:1.1rem;margin-bottom:10px}
.tool-card p{font-size:.88rem;color:#6B7280;line-height:1.7;margin-bottom:16px}
.tool-link{display:inline-block;color:#E8456B;font-weight:600;font-size:.88rem}
.tool-link:hover{color:#C93358}

/* === Live Cards === */
.live-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.live-card{background:#FFF;border-radius:12px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.06);transition:all .3s}
.live-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,.12)}
.live-badge{position:absolute;top:12px;left:12px;background:#E8456B;color:#FFF;padding:3px 10px;border-radius:4px;font-size:.75rem;animation:livePulse 2s infinite}
@keyframes livePulse{0%,100%{opacity:1}50%{opacity:.6}}
.live-info{padding:14px 16px}
.live-info h3{font-size:.95rem;margin-bottom:6px}
.live-info p{font-size:.82rem;color:#6B7280;margin-bottom:6px}
.live-viewers{font-size:.78rem;color:#E8456B;font-weight:600}

/* === Topic Cards === */
.topic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.topic-card{background:#FFF;border-radius:12px;padding:24px;box-shadow:0 2px 12px rgba(0,0,0,.05);transition:all .3s;border-left:4px solid #E8456B}
.topic-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.1)}
.topic-tag{display:inline-block;background:#FFF0F3;color:#E8456B;padding:3px 10px;border-radius:4px;font-size:.75rem;margin-bottom:10px}
.topic-card h3{font-size:1rem;margin-bottom:8px}
.topic-card p{font-size:.85rem;color:#6B7280;line-height:1.6;margin-bottom:10px}
.topic-stats{display:flex;gap:16px;font-size:.78rem;color:#9CA3AF}

/* === About Page === */
.about-intro{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.about-text h2{font-size:1.5rem;margin-bottom:16px}
.about-text p{font-size:.92rem;color:#4B5563;line-height:1.8;margin-bottom:14px}
.about-image{border-radius:12px;overflow:hidden;box-shadow:0 8px 32px rgba(0,0,0,.1)}

/* === Timeline === */
.timeline{position:relative;padding-left:40px;max-width:700px;margin:0 auto}
.timeline::before{content:'';position:absolute;left:15px;top:0;bottom:0;width:2px;background:linear-gradient(180deg,#E8456B,#F5A623)}
.timeline-item{position:relative;margin-bottom:32px}
.timeline-item::before{content:'';position:absolute;left:-33px;top:4px;width:14px;height:14px;background:#E8456B;border-radius:50%;border:3px solid #FFF;box-shadow:0 0 0 2px #E8456B}
.timeline-date{font-size:.82rem;color:#E8456B;font-weight:700;margin-bottom:6px}
.timeline-content h3{font-size:1.05rem;margin-bottom:6px}
.timeline-content p{font-size:.88rem;color:#6B7280;line-height:1.7}

/* === Contact === */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.contact-card{background:#FFF;border-radius:12px;padding:28px;box-shadow:0 2px 12px rgba(0,0,0,.05)}
.contact-card h3{font-size:1.05rem;margin-bottom:10px;color:#1A1F3D}
.contact-card p{font-size:.88rem;color:#6B7280;line-height:1.7;margin-bottom:8px}
.contact-info{color:#E8456B;font-weight:600;font-size:.9rem}
.contact-qr{text-align:center}
.contact-qr img{margin:0 auto 8px;border-radius:8px}
.contact-qr p{font-size:.82rem;color:#6B7280}

/* === Responsive === */
@media(max-width:1024px){
  .video-grid{grid-template-columns:repeat(3,1fr)}
  .media-grid{grid-template-columns:repeat(2,1fr)}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .ai-layout{grid-template-columns:1fr}
  .ai-image{order:2}
  .ai-content{order:1}
  .movie-featured{grid-template-columns:1fr}
  .about-intro{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
}
@media(max-width:768px){
  .video-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .media-grid{grid-template-columns:1fr}
  .community-grid{grid-template-columns:1fr}
  .live-grid{grid-template-columns:1fr}
  .tool-grid{grid-template-columns:1fr}
  .topic-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .ent-grid{grid-template-columns:1fr}
  .ent-card.ent-large{grid-row:auto}
  .hero-title{font-size:1.75rem}
  .hero-subtitle{font-size:.95rem}
  .hero-stats{gap:24px}
  .stat-num{font-size:1.3rem}
  .section{padding:40px 0}
  .section-title{font-size:1.5rem}
  .footer-links{grid-template-columns:1fr 1fr}
  .main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#1A1F3D;padding:16px;box-shadow:0 8px 24px rgba(0,0,0,.2)}
  .main-nav.open{display:block}
  .main-nav .nav-list{flex-direction:column;gap:4px}
  .nav-item{display:block;padding:10px 16px}
  .mobile-menu-btn{display:block}
  .header-search{display:none}
  .ai-features{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;align-items:center}
  .hero-stats{flex-direction:column;gap:16px}
  .cta-actions{flex-direction:column;align-items:center}
  .footer-links{grid-template-columns:1fr}
}