/* =============================================
   海角 TangXin - 主样式文件
   版本: 1.0 | 2026
   原创设计 | 影视传媒+视频社区
   ============================================= */

/* ---------- CSS 变量 ---------- */
:root {
  --primary: #E8305A;
  --primary-light: #FF6B9D;
  --primary-dark: #C0183E;
  --secondary: #0D1B2A;
  --secondary-light: #1A2E45;
  --accent: #FFB347;
  --accent2: #A855F7;
  --bg: #F9F5F7;
  --bg2: #FFF0F5;
  --white: #FFFFFF;
  --text: #1A1A2E;
  --text-muted: #6B7280;
  --border: #F0D6E0;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 20px rgba(232,48,90,0.10);
  --shadow-lg: 0 8px 40px rgba(232,48,90,0.18);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --font: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
}

/* ---------- 重置 ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;font-size:16px;}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased;}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{list-style:none;}
button{cursor:pointer;border:none;background:none;font-family:inherit;}
input,textarea,select{font-family:inherit;}

/* ---------- 通用工具类 ---------- */
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}
.section{padding:72px 0;}
.section-sm{padding:48px 0;}
.text-center{text-align:center;}
.text-white{color:var(--white);}
.flex{display:flex;}
.flex-center{display:flex;align-items:center;justify-content:center;}
.grid{display:grid;}
.hidden{display:none!important;}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:50px;font-size:15px;font-weight:600;transition:var(--transition);white-space:nowrap;}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:var(--white);box-shadow:0 4px 16px rgba(232,48,90,0.35);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(232,48,90,0.45);}
.btn-outline{border:2px solid var(--primary);color:var(--primary);background:transparent;}
.btn-outline:hover{background:var(--primary);color:var(--white);}
.btn-dark{background:var(--secondary);color:var(--white);}
.btn-dark:hover{background:var(--secondary-light);}
.btn-sm{padding:8px 20px;font-size:13px;}
.btn-lg{padding:16px 40px;font-size:17px;}

/* ---------- 标题 ---------- */
.section-title{font-size:clamp(24px,4vw,36px);font-weight:800;color:var(--secondary);line-height:1.3;margin-bottom:12px;}
.section-title span{color:var(--primary);}
.section-subtitle{font-size:16px;color:var(--text-muted);margin-bottom:40px;}
.section-header{margin-bottom:48px;}
.section-header .tag{display:inline-block;background:var(--bg2);color:var(--primary);font-size:13px;font-weight:700;padding:4px 14px;border-radius:50px;border:1px solid var(--border);margin-bottom:12px;letter-spacing:0.5px;}

/* ---------- 顶部公告栏 ---------- */
.top-bar{background:linear-gradient(90deg,var(--secondary),var(--secondary-light));color:rgba(255,255,255,0.85);font-size:13px;padding:8px 0;text-align:center;}
.top-bar a{color:var(--primary-light);font-weight:600;}
.top-bar .marquee-wrap{overflow:hidden;white-space:nowrap;}
.top-bar .marquee-inner{display:inline-block;animation:marquee 28s linear infinite;}
@keyframes marquee{0%{transform:translateX(100vw);}100%{transform:translateX(-100%);}}

/* ---------- 导航 ---------- */
.header{background:var(--white);box-shadow:0 2px 16px rgba(0,0,0,0.07);position:sticky;top:0;z-index:1000;transition:var(--transition);}
.header.scrolled{box-shadow:0 4px 24px rgba(0,0,0,0.12);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.logo-wrap{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.logo-img{width:44px;height:44px;object-fit:contain;border-radius:10px;}
.logo-text{font-size:22px;font-weight:900;background:linear-gradient(135deg,var(--primary),var(--primary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-0.5px;}
.logo-sub{font-size:11px;color:var(--text-muted);display:block;margin-top:-4px;letter-spacing:1px;}
.nav{display:flex;align-items:center;gap:4px;}
.nav a{padding:8px 14px;border-radius:8px;font-size:14px;font-weight:600;color:var(--text);transition:var(--transition);position:relative;}
.nav a:hover,.nav a.active{color:var(--primary);background:var(--bg2);}
.nav a.active::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:20px;height:3px;background:var(--primary);border-radius:2px;}
.header-actions{display:flex;align-items:center;gap:12px;}
.hamburger{display:none;flex-direction:column;gap:5px;padding:8px;cursor:pointer;}
.hamburger span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:var(--transition);}

/* ---------- 搜索栏 ---------- */
.search-bar{background:var(--bg2);border-bottom:1px solid var(--border);padding:12px 0;}
.search-inner{display:flex;align-items:center;gap:12px;max-width:720px;margin:0 auto;padding:0 20px;}
.search-form{flex:1;display:flex;align-items:center;background:var(--white);border:2px solid var(--border);border-radius:50px;overflow:hidden;transition:var(--transition);}
.search-form:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(232,48,90,0.1);}
.search-form input{flex:1;border:none;outline:none;padding:10px 20px;font-size:14px;background:transparent;color:var(--text);}
.search-form button{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:var(--white);padding:10px 24px;font-size:14px;font-weight:600;border-radius:0 50px 50px 0;transition:var(--transition);}
.search-form button:hover{opacity:0.9;}
.search-hot{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-muted);}
.search-hot span{color:var(--text-muted);}
.search-hot a{color:var(--primary);font-weight:600;padding:2px 10px;background:var(--bg2);border-radius:50px;border:1px solid var(--border);transition:var(--transition);}
.search-hot a:hover{background:var(--primary);color:var(--white);border-color:var(--primary);}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:14px 0;font-size:13px;color:var(--text-muted);}
.breadcrumb a{color:var(--text-muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span{margin:0 6px;opacity:0.5;}
.breadcrumb .current{color:var(--primary);font-weight:600;}

/* ---------- Hero Banner ---------- */
.hero{position:relative;overflow:hidden;background:var(--secondary);min-height:580px;display:flex;align-items:center;}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0.35;}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(13,27,42,0.92) 40%,rgba(232,48,90,0.25));}
.hero-content{position:relative;z-index:2;max-width:640px;}
.hero-tag{display:inline-flex;align-items:center;gap:6px;background:rgba(232,48,90,0.2);border:1px solid rgba(232,48,90,0.4);color:var(--primary-light);font-size:13px;font-weight:700;padding:6px 16px;border-radius:50px;margin-bottom:20px;letter-spacing:0.5px;}
.hero h1{font-size:clamp(32px,5vw,56px);font-weight:900;color:var(--white);line-height:1.2;margin-bottom:20px;}
.hero h1 em{font-style:normal;color:var(--primary-light);}
.hero-desc{font-size:17px;color:rgba(255,255,255,0.75);margin-bottom:36px;line-height:1.8;}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;}
.hero-stats{display:flex;gap:32px;margin-top:48px;padding-top:32px;border-top:1px solid rgba(255,255,255,0.1);}
.hero-stat-num{font-size:28px;font-weight:900;color:var(--white);}
.hero-stat-num span{color:var(--primary-light);}
.hero-stat-label{font-size:13px;color:rgba(255,255,255,0.55);margin-top:2px;}

/* ---------- 视频卡片 ---------- */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;}
.video-card{background:var(--white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition);cursor:pointer;}
.video-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);}
.video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#1a1a2e;}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s ease;}
.video-card:hover .video-thumb img{transform:scale(1.06);}
.video-play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0);transition:var(--transition);}
.video-card:hover .video-play-btn{background:rgba(0,0,0,0.45);}
.video-play-icon{width:56px;height:56px;background:rgba(255,255,255,0.95);border-radius:50%;display:flex;align-items:center;justify-content:center;transform:scale(0);transition:var(--transition);box-shadow:0 4px 20px rgba(0,0,0,0.3);}
.video-card:hover .video-play-icon{transform:scale(1);}
.video-play-icon svg{width:22px;height:22px;fill:var(--primary);margin-left:3px;}
.video-duration{position:absolute;bottom:10px;right:10px;background:rgba(0,0,0,0.75);color:var(--white);font-size:12px;font-weight:700;padding:3px 8px;border-radius:6px;}
.video-badge{position:absolute;top:10px;left:10px;background:var(--primary);color:var(--white);font-size:11px;font-weight:700;padding:3px 10px;border-radius:50px;}
.video-info{padding:16px;}
.video-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.video-meta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--text-muted);}
.video-meta-item{display:flex;align-items:center;gap:4px;}
.video-author{display:flex;align-items:center;gap:8px;margin-top:10px;padding-top:10px;border-top:1px solid var(--border);}
.video-author-avatar{width:28px;height:28px;border-radius:50%;object-fit:cover;}
.video-author-name{font-size:12px;font-weight:600;color:var(--text-muted);}

/* ---------- 分类标签 ---------- */
.category-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:32px;}
.category-tab{padding:8px 20px;border-radius:50px;font-size:14px;font-weight:600;border:2px solid var(--border);color:var(--text-muted);background:var(--white);transition:var(--transition);cursor:pointer;}
.category-tab:hover,.category-tab.active{background:var(--primary);color:var(--white);border-color:var(--primary);}

/* ---------- 专家卡片 ---------- */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:28px;}
.expert-card{background:var(--white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition);text-align:center;}
.expert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.expert-avatar{width:100%;aspect-ratio:3/4;object-fit:cover;object-position:top;}
.expert-body{padding:20px;}
.expert-name{font-size:18px;font-weight:800;color:var(--secondary);margin-bottom:4px;}
.expert-role{font-size:13px;color:var(--primary);font-weight:600;margin-bottom:10px;}
.expert-desc{font-size:13px;color:var(--text-muted);line-height:1.6;margin-bottom:14px;}
.expert-tags{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;margin-bottom:14px;}
.expert-tag{font-size:11px;padding:3px 10px;background:var(--bg2);color:var(--primary);border-radius:50px;border:1px solid var(--border);}
.expert-actions{display:flex;gap:8px;justify-content:center;}

/* ---------- 合作品牌 ---------- */
.partner-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:20px;}
.partner-item{background:var(--white);border-radius:var(--radius);padding:20px;display:flex;align-items:center;justify-content:center;border:2px solid var(--border);transition:var(--transition);font-weight:700;font-size:15px;color:var(--text-muted);min-height:80px;}
.partner-item:hover{border-color:var(--primary);color:var(--primary);transform:scale(1.04);}

/* ---------- 评价 ---------- */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px;}
.review-card{background:var(--white);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow);border-left:4px solid var(--primary);}
.review-stars{color:var(--accent);font-size:16px;margin-bottom:12px;letter-spacing:2px;}
.review-text{font-size:14px;color:var(--text);line-height:1.7;margin-bottom:16px;font-style:italic;}
.review-author{display:flex;align-items:center;gap:12px;}
.review-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-light));display:flex;align-items:center;justify-content:center;color:var(--white);font-weight:800;font-size:16px;flex-shrink:0;}
.review-name{font-weight:700;font-size:14px;color:var(--secondary);}
.review-date{font-size:12px;color:var(--text-muted);}

/* ---------- FAQ ---------- */
.faq-list{max-width:800px;margin:0 auto;}
.faq-item{background:var(--white);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow);}
.faq-question{padding:18px 24px;font-size:15px;font-weight:700;color:var(--secondary);cursor:pointer;display:flex;align-items:center;justify-content:space-between;transition:var(--transition);}
.faq-question:hover{color:var(--primary);}
.faq-question .faq-icon{width:24px;height:24px;background:var(--bg2);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:var(--transition);flex-shrink:0;color:var(--primary);font-size:18px;font-weight:300;}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--primary);color:var(--white);}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.4s ease,padding 0.3s ease;}
.faq-item.open .faq-answer{max-height:300px;}
.faq-answer p{padding:0 24px 20px;font-size:14px;color:var(--text-muted);line-height:1.8;}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;}
.contact-info-item{display:flex;align-items:flex-start;gap:16px;margin-bottom:24px;}
.contact-icon{width:48px;height:48px;background:var(--bg2);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0;color:var(--primary);}
.contact-label{font-size:13px;color:var(--text-muted);margin-bottom:4px;}
.contact-value{font-size:15px;font-weight:700;color:var(--secondary);}
.qr-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.qr-item{text-align:center;}
.qr-item img{width:120px;height:120px;object-fit:cover;border-radius:12px;margin:0 auto 8px;border:2px solid var(--border);}
.qr-item p{font-size:12px;color:var(--text-muted);font-weight:600;}

/* ---------- 社区功能 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:24px;}
.feature-card{background:var(--white);border-radius:var(--radius-lg);padding:28px 24px;text-align:center;box-shadow:var(--shadow);transition:var(--transition);}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.feature-icon{width:64px;height:64px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px;margin:0 auto 16px;}
.feature-title{font-size:16px;font-weight:800;color:var(--secondary);margin-bottom:8px;}
.feature-desc{font-size:13px;color:var(--text-muted);line-height:1.6;}

/* ---------- AI赋能区 ---------- */
.ai-section{background:linear-gradient(135deg,var(--secondary) 0%,#1a0a2e 100%);padding:80px 0;position:relative;overflow:hidden;}
.ai-section::before{content:'';position:absolute;top:-50%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(168,85,247,0.15) 0%,transparent 70%);pointer-events:none;}
.ai-section::after{content:'';position:absolute;bottom:-30%;left:-5%;width:400px;height:400px;background:radial-gradient(circle,rgba(232,48,90,0.12) 0%,transparent 70%);pointer-events:none;}
.ai-card{background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.1);border-radius:var(--radius-lg);padding:28px;transition:var(--transition);}
.ai-card:hover{background:rgba(255,255,255,0.1);border-color:rgba(168,85,247,0.4);transform:translateY(-4px);}
.ai-card-icon{font-size:36px;margin-bottom:16px;}
.ai-card-title{font-size:17px;font-weight:800;color:var(--white);margin-bottom:10px;}
.ai-card-desc{font-size:13px;color:rgba(255,255,255,0.6);line-height:1.7;}

/* ---------- 社区弹幕 ---------- */
.danmaku-wrap{background:var(--secondary);border-radius:var(--radius-lg);padding:20px;overflow:hidden;position:relative;height:100px;}
.danmaku-track{position:absolute;white-space:nowrap;animation:danmaku-scroll linear infinite;}
.danmaku-track:nth-child(1){top:12px;animation-duration:18s;}
.danmaku-track:nth-child(2){top:42px;animation-duration:24s;animation-delay:-8s;}
.danmaku-track:nth-child(3){top:72px;animation-duration:20s;animation-delay:-4s;}
@keyframes danmaku-scroll{0%{transform:translateX(100vw);}100%{transform:translateX(-100%);}}
.danmaku-item{display:inline-block;margin-right:40px;font-size:13px;padding:4px 12px;border-radius:50px;border:1px solid;}
.danmaku-item.pink{color:#FF6B9D;border-color:rgba(255,107,157,0.3);background:rgba(255,107,157,0.08);}
.danmaku-item.purple{color:#A855F7;border-color:rgba(168,85,247,0.3);background:rgba(168,85,247,0.08);}
.danmaku-item.gold{color:#FFB347;border-color:rgba(255,179,71,0.3);background:rgba(255,179,71,0.08);}
.danmaku-item.cyan{color:#06B6D4;border-color:rgba(6,182,212,0.3);background:rgba(6,182,212,0.08);}

/* ---------- 分享按钮 ---------- */
.share-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:50px;font-size:13px;font-weight:600;transition:var(--transition);}
.share-wechat{background:#07C160;color:var(--white);}
.share-weibo{background:#E6162D;color:var(--white);}
.share-douyin{background:#000000;color:var(--white);}
.share-bilibili{background:#00A1D6;color:var(--white);}
.share-btn:hover{opacity:0.85;transform:translateY(-2px);}

/* ---------- 页脚 ---------- */
.footer{background:var(--secondary);color:rgba(255,255,255,0.7);padding:60px 0 0;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px;}
.footer-brand .logo-wrap{margin-bottom:16px;}
.footer-brand .logo-text{color:var(--white);-webkit-text-fill-color:var(--white);}
.footer-brand p{font-size:13px;line-height:1.8;color:rgba(255,255,255,0.5);margin-bottom:20px;}
.footer-title{font-size:15px;font-weight:800;color:var(--white);margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,0.1);}
.footer-links{display:flex;flex-direction:column;gap:8px;}
.footer-links a{font-size:13px;color:rgba(255,255,255,0.5);transition:var(--transition);}
.footer-links a:hover{color:var(--primary-light);}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding:20px 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:12px;color:rgba(255,255,255,0.35);}
.footer-bottom a{color:rgba(255,255,255,0.35);}
.footer-bottom a:hover{color:var(--primary-light);}

/* ---------- 移动端导航 ---------- */
.mobile-nav{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.5);z-index:999;backdrop-filter:blur(4px);}
.mobile-nav.open{display:block;}
.mobile-nav-panel{position:absolute;top:0;right:0;width:280px;height:100%;background:var(--white);padding:24px;overflow-y:auto;transform:translateX(100%);transition:transform 0.3s ease;}
.mobile-nav.open .mobile-nav-panel{transform:translateX(0);}
.mobile-nav-close{position:absolute;top:16px;right:16px;font-size:24px;color:var(--text-muted);cursor:pointer;}
.mobile-nav-links{margin-top:48px;display:flex;flex-direction:column;gap:4px;}
.mobile-nav-links a{padding:12px 16px;border-radius:8px;font-size:15px;font-weight:600;color:var(--text);transition:var(--transition);}
.mobile-nav-links a:hover{background:var(--bg2);color:var(--primary);}

/* ---------- 标签云 ---------- */
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag-item{padding:6px 16px;background:var(--white);border:1px solid var(--border);border-radius:50px;font-size:13px;color:var(--text-muted);transition:var(--transition);cursor:pointer;}
.tag-item:hover{background:var(--primary);color:var(--white);border-color:var(--primary);}

/* ---------- 统计数字 ---------- */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-card{background:var(--white);border-radius:var(--radius-lg);padding:28px 20px;text-align:center;box-shadow:var(--shadow);}
.stat-num{font-size:36px;font-weight:900;background:linear-gradient(135deg,var(--primary),var(--primary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:6px;}
.stat-label{font-size:13px;color:var(--text-muted);font-weight:600;}

/* ---------- 图片画廊 ---------- */
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.gallery-item{border-radius:var(--radius);overflow:hidden;aspect-ratio:3/4;position:relative;cursor:pointer;}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s ease;}
.gallery-item:hover img{transform:scale(1.06);}
.gallery-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(13,27,42,0.7),transparent);opacity:0;transition:var(--transition);}
.gallery-item:hover .gallery-overlay{opacity:1;}

/* ---------- How-To 步骤 ---------- */
.steps-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:24px;}
.step-card{text-align:center;padding:24px 16px;}
.step-num{width:52px;height:52px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:900;color:var(--white);margin:0 auto 16px;}
.step-title{font-size:15px;font-weight:800;color:var(--secondary);margin-bottom:8px;}
.step-desc{font-size:13px;color:var(--text-muted);line-height:1.6;}

/* ---------- 内页 Hero ---------- */
.page-hero{background:linear-gradient(135deg,var(--secondary),#1a0a2e);padding:60px 0;text-align:center;position:relative;overflow:hidden;}
.page-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at center,rgba(232,48,90,0.15) 0%,transparent 70%);}
.page-hero h1{font-size:clamp(28px,4vw,44px);font-weight:900;color:var(--white);margin-bottom:12px;position:relative;}
.page-hero p{font-size:16px;color:rgba(255,255,255,0.65);position:relative;}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .contact-grid{grid-template-columns:1fr;}
}
@media(max-width:768px){
  .nav{display:none;}
  .hamburger{display:flex;}
  .header-actions .btn{display:none;}
  .hero{min-height:480px;}
  .hero h1{font-size:28px;}
  .hero-stats{gap:20px;}
  .hero-stat-num{font-size:22px;}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));}
  .expert-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));}
  .gallery-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;text-align:center;}
  .search-hot{display:none;}
  .section{padding:48px 0;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:480px){
  .hero-actions{flex-direction:column;}
  .gallery-grid{grid-template-columns:1fr;}
  .qr-grid{grid-template-columns:1fr 1fr;}
  .steps-grid{grid-template-columns:1fr 1fr;}
}

/* ---------- 动画 ---------- */
@keyframes fadeInUp{from{opacity:0;transform:translateY(24px);}to{opacity:1;transform:translateY(0);}}
@keyframes fadeIn{from{opacity:0;}to{opacity:1;}}
@keyframes pulse{0%,100%{transform:scale(1);}50%{transform:scale(1.05);}}
.animate-fadeInUp{animation:fadeInUp 0.6s ease both;}
.animate-fadeIn{animation:fadeIn 0.5s ease both;}
.delay-1{animation-delay:0.1s;}
.delay-2{animation-delay:0.2s;}
.delay-3{animation-delay:0.3s;}
.delay-4{animation-delay:0.4s;}

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar{width:6px;height:6px;}
::-webkit-scrollbar-track{background:var(--bg);}
::-webkit-scrollbar-thumb{background:var(--primary-light);border-radius:3px;}
::-webkit-scrollbar-thumb:hover{background:var(--primary);}

/* ---------- 选中文字 ---------- */
::selection{background:rgba(232,48,90,0.2);color:var(--primary-dark);}

/* ---------- 加载占位 ---------- */
.skeleton{background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0 50%,#f0f0f0 75%);background-size:200% 100%;animation:skeleton-loading 1.5s infinite;}
@keyframes skeleton-loading{0%{background-position:200% 0;}100%{background-position:-200% 0;}}

/* ---------- 直播标识 ---------- */
.live-badge{display:inline-flex;align-items:center;gap:5px;background:#E6162D;color:var(--white);font-size:11px;font-weight:800;padding:3px 10px;border-radius:50px;letter-spacing:0.5px;}
.live-dot{width:7px;height:7px;background:var(--white);border-radius:50%;animation:pulse 1.2s infinite;}

/* ---------- 弹幕输入 ---------- */
.danmaku-input-wrap{display:flex;gap:10px;margin-top:12px;}
.danmaku-input{flex:1;background:rgba(255,255,255,0.08);border:1px solid rgba(255,255,255,0.15);border-radius:50px;padding:10px 18px;color:var(--white);font-size:13px;outline:none;}
.danmaku-input::placeholder{color:rgba(255,255,255,0.35);}
.danmaku-input:focus{border-color:var(--primary-light);}
.danmaku-send{background:var(--primary);color:var(--white);padding:10px 20px;border-radius:50px;font-size:13px;font-weight:700;transition:var(--transition);}
.danmaku-send:hover{background:var(--primary-dark);}