/*
 * 猎奇 - 国内知名游戏解说公司+视频社区
 * 全站样式文件 style.css v1.0
 * 原创设计 © 2025 猎奇 y38ucb.cn
 * 配色：深宇宙黑 + 糖果紫 + 霓虹青 + 热情粉
 */

/* ===== CSS 变量 ===== */
:root {
  --c-bg:        #08091A;
  --c-bg2:       #0E1028;
  --c-card:      #131530;
  --c-card2:     #1A1D40;
  --c-border:    #252850;
  --c-primary:   #C850F0;
  --c-primary-d: #A030D0;
  --c-accent:    #00E5FF;
  --c-pink:      #FF3D8B;
  --c-gold:      #FFD700;
  --c-text:      #E8EBF8;
  --c-muted:     #7880AA;
  --c-success:   #22D87A;
  --grad-main:   linear-gradient(135deg, #C850F0 0%, #FF3D8B 50%, #00E5FF 100%);
  --grad-card:   linear-gradient(145deg, #1A1D40 0%, #131530 100%);
  --grad-hero:   linear-gradient(180deg, rgba(8,9,26,0) 0%, rgba(8,9,26,0.7) 60%, rgba(8,9,26,1) 100%);
  --shadow-glow: 0 0 30px rgba(200,80,240,0.35);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.5);
  --radius-sm:   8px;
  --radius-md:   14px;
  --radius-lg:   22px;
  --radius-xl:   32px;
  --trans:       0.3s ease;
  --header-h:    72px;
  --font:        'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
}

/* ===== Reset ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font);background:var(--c-bg);color:var(--c-text);line-height:1.75;overflow-x:hidden}
a{color:var(--c-primary);text-decoration:none;transition:color var(--trans)}
a:hover{color:var(--c-accent)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button{cursor:pointer;border:none;outline:none;font-family:var(--font)}
input,textarea,select{font-family:var(--font);outline:none}

/* ===== 干扰标签隐藏 ===== */
.txv-noise{display:none!important}

/* ===== 容器 ===== */
.wrap{max-width:1300px;margin:0 auto;padding:0 24px}
.wrap-sm{max-width:960px;margin:0 auto;padding:0 24px}

/* ===== 滚动条 ===== */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--c-bg2)}
::-webkit-scrollbar-thumb{background:var(--c-primary);border-radius:3px}

/* ===== 顶部导航 ===== */
#site-header{
  position:fixed;top:0;left:0;right:0;
  height:var(--header-h);
  background:rgba(8,9,26,0.92);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--c-border);
  z-index:9999;
  transition:box-shadow var(--trans),background var(--trans);
}
#site-header.scrolled{
  background:rgba(8,9,26,0.98);
  box-shadow:0 2px 24px rgba(200,80,240,0.2);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;height:100%;gap:20px;
}
/* Logo */
.site-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.site-logo img{width:40px;height:40px;border-radius:50%;object-fit:cover}
.logo-name{font-size:1.2rem;font-weight:800;background:var(--grad-main);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:1px}
/* 主导航 */
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{
  padding:6px 14px;border-radius:var(--radius-sm);
  font-size:0.9rem;font-weight:600;color:var(--c-muted);
  transition:all var(--trans);white-space:nowrap;
}
.main-nav a:hover,.main-nav a.active{color:var(--c-text);background:rgba(200,80,240,0.15)}
/* 搜索框 */
.header-search{display:flex;align-items:center;gap:8px;flex:1;max-width:280px}
.header-search input{
  flex:1;background:rgba(255,255,255,0.06);border:1px solid var(--c-border);
  border-radius:24px;padding:8px 16px;color:var(--c-text);font-size:0.85rem;
  transition:border-color var(--trans);
}
.header-search input:focus{border-color:var(--c-primary)}
.header-search input::placeholder{color:var(--c-muted)}
.search-btn{
  background:var(--c-primary);color:#fff;border-radius:24px;
  padding:8px 16px;font-size:0.85rem;font-weight:600;
  transition:background var(--trans);
}
.search-btn:hover{background:var(--c-primary-d)}
/* 汉堡菜单 */
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px}
.hamburger span{display:block;width:24px;height:2px;background:var(--c-text);border-radius:2px;transition:all var(--trans)}
/* 搜索提示 */
.search-hint{
  position:absolute;top:100%;left:50%;transform:translateX(-50%);
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius-sm);padding:8px 20px;font-size:0.82rem;
  color:var(--c-muted);white-space:nowrap;display:none;z-index:100;
}
/* 导航下方搜索栏 */
.nav-search-bar{
  position:fixed;top:var(--header-h);left:0;right:0;
  background:rgba(14,16,40,0.96);border-bottom:1px solid var(--c-border);
  padding:10px 0;z-index:9998;
}
.nav-search-inner{
  display:flex;align-items:center;gap:10px;max-width:600px;margin:0 auto;padding:0 24px;
}
.nav-search-inner input{
  flex:1;background:rgba(255,255,255,0.06);border:1px solid var(--c-border);
  border-radius:24px;padding:9px 20px;color:var(--c-text);font-size:0.9rem;
}
.nav-search-inner input:focus{border-color:var(--c-primary)}
.nav-search-inner .search-btn{padding:9px 22px}

/* ===== Hero 主视觉 ===== */
.hero-section{
  position:relative;min-height:100vh;display:flex;align-items:center;
  padding-top:calc(var(--header-h) + 52px);overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  background-attachment:fixed;
}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,9,26,0.3) 0%,rgba(8,9,26,0.6) 50%,rgba(8,9,26,0.95) 100%);
}
.hero-content{position:relative;z-index:2;max-width:720px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(200,80,240,0.15);border:1px solid rgba(200,80,240,0.4);
  border-radius:24px;padding:6px 18px;font-size:0.82rem;color:var(--c-primary);
  margin-bottom:24px;font-weight:600;letter-spacing:0.5px;
}
.hero-badge::before{content:'';width:8px;height:8px;background:var(--c-primary);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:0.5;transform:scale(1.3)}}
.hero-title{
  font-size:clamp(2.2rem,5vw,4rem);font-weight:900;line-height:1.15;
  margin-bottom:20px;letter-spacing:-0.5px;
}
.hero-title .hl{background:var(--grad-main);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:1.05rem;color:var(--c-muted);margin-bottom:36px;line-height:1.8;max-width:600px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:48px}
.btn-primary{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--grad-main);color:#fff;border-radius:var(--radius-xl);
  padding:13px 30px;font-size:0.95rem;font-weight:700;
  box-shadow:var(--shadow-glow);transition:transform var(--trans),box-shadow var(--trans);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 40px rgba(200,80,240,0.5);color:#fff}
.btn-outline{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;color:var(--c-text);border:1.5px solid var(--c-border);
  border-radius:var(--radius-xl);padding:12px 28px;font-size:0.95rem;font-weight:600;
  transition:all var(--trans);
}
.btn-outline:hover{border-color:var(--c-primary);color:var(--c-primary)}
.hero-stats{
  display:flex;gap:32px;flex-wrap:wrap;
}
.hero-stat .num{font-size:1.8rem;font-weight:900;background:var(--grad-main);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:block}
.hero-stat .lbl{font-size:0.82rem;color:var(--c-muted)}

/* ===== 通用 Section ===== */
.section{padding:80px 0}
.section-alt{background:var(--c-bg2)}
.section-header{text-align:center;margin-bottom:52px}
.section-tag{
  display:inline-block;background:rgba(200,80,240,0.12);
  border:1px solid rgba(200,80,240,0.35);border-radius:20px;
  padding:4px 16px;font-size:0.78rem;color:var(--c-primary);
  font-weight:700;letter-spacing:1px;text-transform:uppercase;margin-bottom:14px;
}
.section-title{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:900;margin-bottom:14px;line-height:1.2}
.section-title span{background:var(--grad-main);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.section-desc{font-size:0.95rem;color:var(--c-muted);max-width:640px;margin:0 auto;line-height:1.8}

/* ===== 数据统计 ===== */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{
  text-align:center;background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius-md);padding:28px 16px;
  transition:transform var(--trans),border-color var(--trans);
}
.stat-item:hover{transform:translateY(-4px);border-color:var(--c-primary)}
.stat-num{
  font-size:2.2rem;font-weight:900;
  background:var(--grad-main);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  display:block;margin-bottom:6px;
}
.stat-label{font-size:0.85rem;color:var(--c-muted)}

/* ===== 标签云 ===== */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.tag{
  background:var(--c-card2);border:1px solid var(--c-border);
  border-radius:20px;padding:6px 16px;font-size:0.82rem;color:var(--c-muted);
  cursor:pointer;transition:all var(--trans);
}
.tag:hover,.tag.active{background:rgba(200,80,240,0.15);border-color:var(--c-primary);color:var(--c-primary)}

/* ===== 视频卡片 ===== */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.video-card{
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius-md);overflow:hidden;
  transition:transform var(--trans),border-color var(--trans),box-shadow var(--trans);
  cursor:pointer;
}
.video-card:hover{transform:translateY(-6px);border-color:var(--c-primary);box-shadow:var(--shadow-glow)}
.video-thumb{position:relative;overflow:hidden;aspect-ratio:16/9}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s 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(8,9,26,0.4);opacity:0;transition:opacity var(--trans);
}
.video-card:hover .video-play-btn{opacity:1}
.play-icon{
  width:52px;height:52px;background:rgba(200,80,240,0.9);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 20px rgba(200,80,240,0.6);
}
.play-icon::after{content:'';border-left:18px solid #fff;border-top:11px solid transparent;border-bottom:11px solid transparent;margin-left:4px}
.video-duration{
  position:absolute;bottom:10px;right:10px;
  background:rgba(0,0,0,0.75);color:#fff;font-size:0.75rem;
  padding:2px 8px;border-radius:4px;font-weight:600;
}
.video-badge{
  position:absolute;top:10px;left:10px;
  background:var(--c-primary);color:#fff;font-size:0.72rem;
  padding:3px 10px;border-radius:4px;font-weight:700;
}
.video-info{padding:16px}
.video-title{font-size:0.92rem;font-weight:700;margin-bottom:10px;line-height:1.5;color:var(--c-text)}
.video-meta{display:flex;gap:14px;font-size:0.78rem;color:var(--c-muted)}
.video-meta span::before{margin-right:4px}
.v-views::before{content:'👁'}
.v-likes::before{content:'❤'}
.v-comments::before{content:'💬'}

/* ===== 功能卡片 ===== */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px}
.feature-card{
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius-md);padding:28px 22px;
  transition:all var(--trans);
}
.feature-card:hover{border-color:var(--c-primary);transform:translateY(-4px);box-shadow:var(--shadow-glow)}
.feature-icon{
  width:52px;height:52px;background:rgba(200,80,240,0.12);
  border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;
  font-size:1.5rem;margin-bottom:16px;
}
.feature-title{font-size:1rem;font-weight:800;margin-bottom:10px;color:var(--c-text)}
.feature-desc{font-size:0.85rem;color:var(--c-muted);line-height:1.7}

/* ===== AI 区块 ===== */
.ai-section{background:linear-gradient(135deg,#0E1028 0%,#1A0D35 50%,#0E1028 100%)}
.ai-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.ai-visual img{border-radius:var(--radius-lg);box-shadow:var(--shadow-glow)}
.ai-feature-item{display:flex;gap:16px;margin-bottom:24px;align-items:flex-start}
.ai-feature-icon{
  width:44px;height:44px;background:rgba(200,80,240,0.15);border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;font-size:1.3rem;flex-shrink:0;
}
.ai-feature-text h4{font-size:0.95rem;font-weight:800;margin-bottom:6px;color:var(--c-text)}
.ai-feature-text p{font-size:0.85rem;color:var(--c-muted);line-height:1.7}

/* ===== 专家卡片 ===== */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.expert-card{
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius-md);overflow:hidden;
  transition:all var(--trans);
}
.expert-card:hover{border-color:var(--c-primary);box-shadow:var(--shadow-glow)}
.expert-photo{position:relative;height:260px;overflow:hidden}
.expert-photo img{width:100%;height:100%;object-fit:cover;object-position:top}
.expert-badge{
  position:absolute;top:14px;right:14px;
  background:var(--grad-main);color:#fff;font-size:0.72rem;
  padding:4px 12px;border-radius:20px;font-weight:700;
}
.expert-info{padding:20px}
.expert-name{font-size:1.1rem;font-weight:900;margin-bottom:4px}
.expert-role{font-size:0.82rem;color:var(--c-primary);margin-bottom:10px;font-weight:600}
.expert-desc{font-size:0.83rem;color:var(--c-muted);line-height:1.7;margin-bottom:14px}
.award-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.award-tag{
  background:rgba(255,215,0,0.1);border:1px solid rgba(255,215,0,0.3);
  color:var(--c-gold);font-size:0.72rem;padding:3px 10px;border-radius:12px;font-weight:600;
}
.expert-btns{display:flex;gap:8px}
.btn-sm{
  flex:1;text-align:center;padding:8px 12px;border-radius:var(--radius-sm);
  font-size:0.8rem;font-weight:700;transition:all var(--trans);
}
.btn-sm-primary{background:rgba(200,80,240,0.15);border:1px solid var(--c-primary);color:var(--c-primary)}
.btn-sm-primary:hover{background:var(--c-primary);color:#fff}
.btn-sm-outline{background:transparent;border:1px solid var(--c-border);color:var(--c-muted)}
.btn-sm-outline:hover{border-color:var(--c-accent);color:var(--c-accent)}

/* ===== 合作品牌 ===== */
.partner-wall{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.partner-item{
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius-sm);padding:12px 24px;font-size:0.9rem;font-weight:700;
  color:var(--c-muted);transition:all var(--trans);
}
.partner-item:hover{border-color:var(--c-primary);color:var(--c-text)}

/* ===== How-To 步骤 ===== */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px}
.step-card{
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius-md);padding:28px 20px;text-align:center;
  transition:all var(--trans);
}
.step-card:hover{border-color:var(--c-accent);transform:translateY(-4px)}
.step-num{
  width:48px;height:48px;background:var(--grad-main);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:1.3rem;font-weight:900;color:#fff;margin:0 auto 16px;
}
.step-title{font-size:0.95rem;font-weight:800;margin-bottom:8px}
.step-desc{font-size:0.83rem;color:var(--c-muted);line-height:1.7}

/* ===== 联系我们 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info h3{font-size:1.1rem;font-weight:800;margin-bottom:20px;color:var(--c-text)}
.contact-item{display:flex;gap:14px;align-items:flex-start;margin-bottom:18px}
.contact-icon{
  width:40px;height:40px;background:rgba(200,80,240,0.12);border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0;
}
.contact-label{font-size:0.78rem;color:var(--c-muted);margin-bottom:2px}
.contact-value{font-size:0.9rem;font-weight:600;color:var(--c-text)}
.qr-row{display:flex;gap:20px;margin-top:20px}
.qr-item{text-align:center}
.qr-item img{width:90px;height:90px;border-radius:var(--radius-sm);border:1px solid var(--c-border)}
.qr-item p{font-size:0.78rem;color:var(--c-muted);margin-top:6px}

/* ===== 评价 ===== */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.review-card{
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius-md);padding:24px;
  transition:all var(--trans);
}
.review-card:hover{border-color:var(--c-primary);box-shadow:var(--shadow-glow)}
.review-stars{color:var(--c-gold);font-size:1rem;margin-bottom:12px;letter-spacing:2px}
.review-text{font-size:0.88rem;color:var(--c-muted);line-height:1.8;margin-bottom:16px}
.review-author{display:flex;align-items:center;gap:12px}
.review-avatar{
  width:40px;height:40px;background:var(--grad-main);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:1rem;font-weight:900;color:#fff;flex-shrink:0;
}
.review-name{font-size:0.9rem;font-weight:700;color:var(--c-text)}
.review-label{font-size:0.78rem;color:var(--c-muted)}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{
  background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius-md);margin-bottom:12px;overflow:hidden;
  transition:border-color var(--trans);
}
.faq-item:hover{border-color:var(--c-primary)}
.faq-question{
  padding:18px 22px;font-size:0.95rem;font-weight:700;cursor:pointer;
  display:flex;justify-content:space-between;align-items:center;
  color:var(--c-text);user-select:none;
}
.faq-icon{
  width:26px;height:26px;background:rgba(200,80,240,0.12);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:1rem;color:var(--c-primary);transition:transform var(--trans);flex-shrink:0;
}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-answer{
  max-height:0;overflow:hidden;transition:max-height 0.4s ease;
}
.faq-item.open .faq-answer{max-height:300px}
.faq-answer p{padding:0 22px 18px;font-size:0.88rem;color:var(--c-muted);line-height:1.8}

/* ===== 社交分享 ===== */
.share-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.share-label{font-size:0.85rem;color:var(--c-muted)}
.share-btn{
  padding:8px 16px;border-radius:20px;font-size:0.82rem;font-weight:700;
  border:1px solid var(--c-border);color:var(--c-muted);
  transition:all var(--trans);
}
.share-btn:hover{border-color:var(--c-primary);color:var(--c-primary)}

/* ===== MCP 智能助手 ===== */
.mcp-header{
  background:linear-gradient(135deg,var(--c-primary),var(--c-pink));
  padding:16px 20px;display:flex;align-items:center;gap:12px;
}
.mcp-avatar{
  width:38px;height:38px;background:rgba(255,255,255,0.2);border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:1.2rem;
}
.mcp-chat{padding:20px;min-height:180px;display:flex;flex-direction:column;gap:12px}
.mcp-bubble{
  display:flex;gap:10px;align-items:flex-start;
}
.mcp-bubble.user{flex-direction:row-reverse}
.mcp-bubble-icon{
  width:32px;height:32px;border-radius:50%;display:flex;align-items:center;
  justify-content:center;font-size:1rem;flex-shrink:0;
}
.mcp-bubble-text{
  border-radius:12px 12px 12px 0;padding:10px 14px;max-width:78%;
  font-size:0.87rem;line-height:1.7;background:var(--c-card2);color:var(--c-text);
}
.mcp-bubble.user .mcp-bubble-text{border-radius:12px 12px 0 12px;background:rgba(200,80,240,0.15)}
.mcp-input-row{padding:14px 18px;border-top:1px solid var(--c-border);display:flex;gap:10px}
.mcp-input-row input{
  flex:1;background:var(--c-bg);border:1px solid var(--c-border);
  border-radius:24px;padding:9px 18px;color:var(--c-text);font-size:0.87rem;
}
.mcp-input-row input:focus{border-color:var(--c-primary)}
.mcp-send{
  background:var(--c-primary);color:#fff;border-radius:24px;
  padding:9px 20px;font-size:0.87rem;font-weight:700;
  transition:background var(--trans);
}
.mcp-send:hover{background:var(--c-primary-d)}
.mcp-quick-row{padding:8px 18px 14px;display:flex;gap:8px;flex-wrap:wrap}
.mcp-quick{
  background:var(--c-card2);border:1px solid var(--c-border);
  color:var(--c-muted);font-size:0.77rem;padding:4px 12px;border-radius:16px;
  cursor:pointer;transition:all var(--trans);
}
.mcp-quick:hover{border-color:var(--c-primary);color:var(--c-primary)}

/* ===== 页脚 ===== */
#site-footer{background:var(--c-bg2);border-top:1px solid var(--c-border);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .site-logo{margin-bottom:16px}
.footer-brand p{font-size:0.85rem;color:var(--c-muted);line-height:1.8;margin-bottom:20px}
.footer-qr{display:flex;gap:16px}
.footer-qr-item{text-align:center}
.footer-qr-item img{width:72px;height:72px;border-radius:var(--radius-sm);border:1px solid var(--c-border)}
.footer-qr-item p{font-size:0.72rem;color:var(--c-muted);margin-top:5px}
.footer-col h4{font-size:0.95rem;font-weight:800;margin-bottom:16px;color:var(--c-text)}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:0.85rem;color:var(--c-muted);transition:color var(--trans)}
.footer-col ul li a:hover{color:var(--c-primary)}
.footer-bottom{
  border-top:1px solid var(--c-border);padding:20px 0;
  text-align:center;font-size:0.8rem;color:var(--c-muted);line-height:1.8;
}
.footer-bottom a{color:var(--c-muted)}
.footer-bottom a:hover{color:var(--c-primary)}

/* ===== 返回顶部 ===== */
#back-top{
  position:fixed;bottom:28px;right:28px;
  width:44px;height:44px;background:var(--grad-main);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:1.1rem;color:#fff;cursor:pointer;
  opacity:0;transform:translateY(20px);transition:all var(--trans);
  z-index:9000;box-shadow:var(--shadow-glow);
}
#back-top.show{opacity:1;transform:translateY(0)}
#back-top:hover{transform:translateY(-4px)}

/* ===== 面包屑 ===== */
.breadcrumb{
  padding:calc(var(--header-h) + 52px + 16px) 0 16px;
  font-size:0.82rem;color:var(--c-muted);
}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb span{color:var(--c-primary)}

/* ===== 内页 Hero ===== */
.inner-hero{
  padding:calc(var(--header-h) + 52px + 40px) 0 60px;
  background:linear-gradient(180deg,var(--c-bg2) 0%,var(--c-bg) 100%);
  border-bottom:1px solid var(--c-border);
}
.inner-hero h1{font-size:clamp(1.8rem,3vw,2.8rem);font-weight:900;margin-bottom:12px}
.inner-hero h1 span{background:var(--grad-main);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.inner-hero p{font-size:0.95rem;color:var(--c-muted);max-width:600px;line-height:1.8}

/* ===== 分页 ===== */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:40px}
.page-btn{
  width:36px;height:36px;background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;
  font-size:0.85rem;color:var(--c-muted);cursor:pointer;transition:all var(--trans);
}
.page-btn:hover,.page-btn.active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .ai-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .stats-row{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  :root{--header-h:60px}
  .main-nav{display:none;position:fixed;top:var(--header-h);left:0;right:0;
    background:rgba(8,9,26,0.98);flex-direction:column;padding:20px;gap:8px;
    border-bottom:1px solid var(--c-border);}
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 16px;border-radius:var(--radius-sm)}
  .hamburger{display:flex}
  .header-search{display:none}
  .hero-section{min-height:auto;padding-bottom:60px}
  .hero-stats{gap:20px}
  .footer-grid{grid-template-columns:1fr}
  .stats-row{grid-template-columns:repeat(2,1fr)}
  .video-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .howto-steps{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){
  .stats-row{grid-template-columns:1fr 1fr}
  .howto-steps{grid-template-columns:1fr}
  .hero-actions{flex-direction:column}
  .btn-primary,.btn-outline{width:100%;justify-content:center}
}