/* ===================================
   17C 品牌官网 - 主样式文件
   现代活力 · 科技未来感 · 沉浸式交互
   =================================== */

/* CSS 变量 */
:root {
  --primary: #0a84ff;
  --primary-dark: #0060df;
  --accent: #00d4ff;
  --accent2: #7c3aed;
  --bg-dark: #050a14;
  --bg-card: #0d1526;
  --bg-card2: #111827;
  --text-primary: #f0f4ff;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: rgba(255,255,255,0.08);
  --glow: 0 0 40px rgba(10,132,255,0.3);
  --glow-accent: 0 0 30px rgba(0,212,255,0.25);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --font: 'PingFang SC','Microsoft YaHei','Helvetica Neue',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-dark);color:var(--text-primary);line-height:1.7;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{cursor:pointer;border:none;outline:none;background:none}

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

/* ===== 顶部导航 ===== */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(5,10,20,0.85);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid var(--border);
  transition:var(--transition);
}
.navbar.scrolled{background:rgba(5,10,20,0.97);box-shadow:0 4px 30px rgba(0,0,0,0.5)}
.nav-inner{
  max-width:1280px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 24px;height:64px;
}
.nav-logo{
  display:flex;align-items:center;gap:10px;
  font-size:1.6rem;font-weight:900;letter-spacing:-1px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.nav-logo span{font-size:0.7rem;font-weight:400;letter-spacing:2px;color:var(--text-secondary);-webkit-text-fill-color:var(--text-secondary)}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{
  padding:8px 14px;border-radius:8px;
  font-size:0.9rem;color:var(--text-secondary);
  transition:var(--transition);white-space:nowrap;
}
.nav-menu a:hover,.nav-menu a.active{color:var(--text-primary);background:rgba(10,132,255,0.12)}
.nav-actions{display:flex;align-items:center;gap:12px}
.btn-nav{
  padding:8px 20px;border-radius:8px;
  background:linear-gradient(135deg,var(--primary),var(--accent2));
  color:#fff;font-size:0.875rem;font-weight:600;
  transition:var(--transition);
}
.btn-nav:hover{transform:translateY(-1px);box-shadow:var(--glow)}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:8px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--text-primary);border-radius:2px;transition:var(--transition)}

/* 搜索框 */
.search-bar-wrap{
  background:rgba(13,21,38,0.9);
  border-bottom:1px solid var(--border);
  padding:10px 24px;
  display:flex;justify-content:center;
}
.search-inner{
  max-width:600px;width:100%;
  display:flex;align-items:center;gap:0;
  background:rgba(255,255,255,0.05);
  border:1px solid var(--border);
  border-radius:24px;overflow:hidden;
  transition:var(--transition);
}
.search-inner:focus-within{border-color:var(--primary);box-shadow:var(--glow)}
.search-inner input{
  flex:1;background:transparent;border:none;outline:none;
  padding:10px 20px;color:var(--text-primary);font-size:0.9rem;font-family:var(--font);
}
.search-inner input::placeholder{color:var(--text-muted)}
.search-inner button{
  padding:10px 20px;background:var(--primary);color:#fff;
  font-size:0.875rem;font-weight:600;transition:var(--transition);
}
.search-inner button:hover{background:var(--primary-dark)}

/* ===== 通用区块 ===== */
.section{padding:90px 24px}
.section-inner{max-width:1280px;margin:0 auto}
.section-header{text-align:center;margin-bottom:60px}
.section-tag{
  display:inline-block;padding:4px 14px;border-radius:20px;
  background:rgba(10,132,255,0.12);border:1px solid rgba(10,132,255,0.3);
  color:var(--accent);font-size:0.8rem;font-weight:600;letter-spacing:1px;
  margin-bottom:16px;text-transform:uppercase;
}
.section-title{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;line-height:1.2;margin-bottom:16px}
.section-title .highlight{
  background:linear-gradient(135deg,var(--primary),var(--accent));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.section-desc{color:var(--text-secondary);font-size:1.05rem;max-width:600px;margin:0 auto}

/* ===== Hero Banner ===== */
.hero{
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;padding-top:120px;
  background:linear-gradient(135deg,#050a14 0%,#0a1628 50%,#050a14 100%);
}
.hero-bg{
  position:absolute;inset:0;
  background:url('../images/hero-banner.jpg') center/cover no-repeat;
  opacity:0.18;
}
.hero-particles{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.hero-particles::before,.hero-particles::after{
  content:'';position:absolute;border-radius:50%;
  animation:float 8s ease-in-out infinite;
}
.hero-particles::before{
  width:600px;height:600px;
  background:radial-gradient(circle,rgba(10,132,255,0.12) 0%,transparent 70%);
  top:-200px;right:-200px;animation-delay:-3s;
}
.hero-particles::after{
  width:400px;height:400px;
  background:radial-gradient(circle,rgba(124,58,237,0.1) 0%,transparent 70%);
  bottom:-100px;left:-100px;
}
@keyframes float{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-30px) scale(1.05)}}
.hero-content{
  position:relative;z-index:1;text-align:center;
  max-width:900px;padding:0 24px;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 18px;border-radius:20px;
  background:rgba(10,132,255,0.1);border:1px solid rgba(10,132,255,0.25);
  color:var(--accent);font-size:0.85rem;margin-bottom:28px;
  animation:fadeInUp 0.6s ease both;
}
.hero-badge::before{content:'▶';font-size:0.7rem}
.hero-title{
  font-size:clamp(2.4rem,7vw,5rem);font-weight:900;line-height:1.1;
  margin-bottom:24px;
  animation:fadeInUp 0.7s ease 0.1s both;
}
.hero-title .brand{
  background:linear-gradient(135deg,var(--primary),var(--accent),var(--accent2));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  display:block;
}
.hero-sub{
  font-size:clamp(1rem,2.5vw,1.25rem);color:var(--text-secondary);
  max-width:600px;margin:0 auto 40px;
  animation:fadeInUp 0.7s ease 0.2s both;
}
.hero-actions{
  display:flex;gap:16px;justify-content:center;flex-wrap:wrap;
  animation:fadeInUp 0.7s ease 0.3s both;
}
.btn-primary{
  padding:14px 36px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--accent2));
  color:#fff;font-size:1rem;font-weight:700;
  transition:var(--transition);box-shadow:0 8px 32px rgba(10,132,255,0.35);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 40px rgba(10,132,255,0.5)}
.btn-outline{
  padding:14px 36px;border-radius:12px;
  border:1.5px solid rgba(255,255,255,0.2);
  color:var(--text-primary);font-size:1rem;font-weight:600;
  transition:var(--transition);
}
.btn-outline:hover{border-color:var(--primary);color:var(--accent);background:rgba(10,132,255,0.08)}
.hero-stats{
  display:flex;gap:48px;justify-content:center;flex-wrap:wrap;
  margin-top:60px;padding-top:40px;
  border-top:1px solid var(--border);
  animation:fadeInUp 0.7s ease 0.4s both;
}
.hero-stat{text-align:center}
.hero-stat .num{font-size:2rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-stat .label{font-size:0.85rem;color:var(--text-muted);margin-top:4px}

@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}

/* ===== 视频卡片 ===== */
.video-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(300px,1fr));
  gap:24px;
}
.video-card{
  border-radius:var(--radius);overflow:hidden;
  background:var(--bg-card);
  border:1px solid var(--border);
  transition:var(--transition);
  cursor:pointer;
}
.video-card:hover{transform:translateY(-6px);box-shadow:0 20px 60px rgba(0,0,0,0.5),var(--glow);border-color:rgba(10,132,255,0.3)}
.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(1.05)}
.video-play-btn{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  background:rgba(0,0,0,0.4);
  opacity:0;transition:var(--transition);
}
.video-card:hover .video-play-btn{opacity:1}
.play-icon{
  width:60px;height:60px;border-radius:50%;
  background:rgba(10,132,255,0.9);
  display:flex;align-items:center;justify-content:center;
  transform:scale(0.8);transition:var(--transition);
  box-shadow:0 0 30px rgba(10,132,255,0.6);
}
.video-card:hover .play-icon{transform:scale(1)}
.play-icon::after{
  content:'';
  border-style:solid;border-color:transparent transparent transparent #fff;
  border-width:10px 0 10px 18px;
  margin-left:4px;
}
.video-duration{
  position:absolute;bottom:10px;right:10px;
  background:rgba(0,0,0,0.75);color:#fff;
  padding:2px 8px;border-radius:4px;font-size:0.75rem;
}
.video-tag{
  position:absolute;top:10px;left:10px;
  background:var(--primary);color:#fff;
  padding:3px 10px;border-radius:4px;font-size:0.72rem;font-weight:600;
}
.video-info{padding:16px}
.video-title{font-size:0.95rem;font-weight:600;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:16px;color:var(--text-muted);font-size:0.8rem}
.video-meta span{display:flex;align-items:center;gap:4px}

/* ===== 品牌故事 ===== */
.story-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center;
}
.story-img{border-radius:var(--radius);overflow:hidden;position:relative}
.story-img img{width:100%;height:420px;object-fit:cover}
.story-img::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(10,132,255,0.15),transparent);
  border-radius:var(--radius);
}
.story-content .section-tag{text-align:left;display:block;width:fit-content}
.story-content h2{font-size:clamp(1.8rem,3.5vw,2.5rem);font-weight:800;margin-bottom:20px;line-height:1.2}
.story-content p{color:var(--text-secondary);margin-bottom:20px;font-size:1rem}
.story-values{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px}
.value-item{
  padding:16px;border-radius:var(--radius-sm);
  background:rgba(10,132,255,0.06);border:1px solid var(--border);
}
.value-item .icon{font-size:1.5rem;margin-bottom:8px}
.value-item h4{font-size:0.9rem;font-weight:700;margin-bottom:4px}
.value-item p{font-size:0.82rem;color:var(--text-muted);margin:0}

/* ===== 品牌探索 ===== */
.explore-section{background:linear-gradient(180deg,var(--bg-dark) 0%,#080f1e 100%)}
.explore-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.explore-card{
  padding:32px;border-radius:var(--radius);
  background:var(--bg-card);border:1px solid var(--border);
  transition:var(--transition);position:relative;overflow:hidden;
}
.explore-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:scaleX(0);transition:var(--transition);transform-origin:left;
}
.explore-card:hover::before{transform:scaleX(1)}
.explore-card:hover{transform:translateY(-4px);box-shadow:0 16px 48px rgba(0,0,0,0.4),var(--glow)}
.explore-icon{
  width:56px;height:56px;border-radius:14px;
  background:linear-gradient(135deg,rgba(10,132,255,0.15),rgba(124,58,237,0.15));
  display:flex;align-items:center;justify-content:center;
  font-size:1.6rem;margin-bottom:20px;
}
.explore-card h3{font-size:1.1rem;font-weight:700;margin-bottom:10px}
.explore-card p{color:var(--text-secondary);font-size:0.9rem;line-height:1.6}
.explore-card .card-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:0.875rem;font-weight:600;margin-top:16px;
  transition:var(--transition);
}
.explore-card .card-link:hover{gap:10px}

/* ===== 品牌创造 ===== */
.create-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.create-card{
  border-radius:var(--radius);overflow:hidden;
  background:var(--bg-card);border:1px solid var(--border);
  transition:var(--transition);
}
.create-card:hover{transform:translateY(-4px);box-shadow:0 20px 60px rgba(0,0,0,0.4)}
.create-card:first-child{grid-column:1/-1}
.create-img{aspect-ratio:16/9;overflow:hidden}
.create-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
.create-card:hover .create-img img{transform:scale(1.03)}
.create-info{padding:24px}
.create-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.tag{
  padding:3px 10px;border-radius:4px;font-size:0.75rem;font-weight:600;
  background:rgba(10,132,255,0.12);color:var(--accent);
  border:1px solid rgba(10,132,255,0.2);
}
.create-info h3{font-size:1.1rem;font-weight:700;margin-bottom:8px}
.create-info p{color:var(--text-secondary);font-size:0.875rem}
.create-meta{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}
.create-meta span{color:var(--text-muted);font-size:0.8rem}

/* ===== 品牌灵感 ===== */
.inspire-section{
  background:url('../images/inspire-bg.jpg') center/cover no-repeat;
  position:relative;
}
.inspire-section::before{
  content:'';position:absolute;inset:0;
  background:rgba(5,10,20,0.88);
}
.inspire-section .section-inner{position:relative;z-index:1}
.inspire-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.inspire-card{
  padding:28px;border-radius:var(--radius);
  background:rgba(13,21,38,0.8);border:1px solid var(--border);
  backdrop-filter:blur(10px);
  transition:var(--transition);
}
.inspire-card:hover{transform:translateY(-4px);border-color:rgba(10,132,255,0.3)}
.inspire-card .date{color:var(--text-muted);font-size:0.78rem;margin-bottom:12px}
.inspire-card h3{font-size:1rem;font-weight:700;margin-bottom:10px;line-height:1.4}
.inspire-card p{color:var(--text-secondary);font-size:0.875rem;line-height:1.6}
.inspire-card .read-more{
  display:inline-flex;align-items:center;gap:4px;
  color:var(--primary);font-size:0.85rem;font-weight:600;margin-top:14px;
  transition:var(--transition);
}
.inspire-card .read-more:hover{gap:8px}

/* ===== 用户评价 ===== */
.reviews-section{background:var(--bg-card2)}
.reviews-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.review-card{
  padding:28px;border-radius:var(--radius);
  background:var(--bg-card);border:1px solid var(--border);
  transition:var(--transition);
}
.review-card:hover{transform:translateY(-3px);box-shadow:0 12px 40px rgba(0,0,0,0.3)}
.review-stars{color:#fbbf24;font-size:1rem;margin-bottom:14px;letter-spacing:2px}
.review-text{color:var(--text-secondary);font-size:0.9rem;line-height:1.7;margin-bottom:20px;font-style:italic}
.review-author{display:flex;align-items:center;gap:12px}
.review-avatar{
  width:42px;height:42px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--accent2));
  display:flex;align-items:center;justify-content:center;
  font-size:1rem;font-weight:700;color:#fff;flex-shrink:0;
}
.review-name{font-weight:700;font-size:0.9rem}
.review-role{color:var(--text-muted);font-size:0.78rem}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{
  border-radius:var(--radius-sm);
  background:var(--bg-card);border:1px solid var(--border);
  margin-bottom:12px;overflow:hidden;
  transition:var(--transition);
}
.faq-item.open{border-color:rgba(10,132,255,0.3)}
.faq-question{
  padding:20px 24px;display:flex;align-items:center;justify-content:space-between;
  cursor:pointer;font-weight:600;font-size:0.95rem;
  transition:var(--transition);
}
.faq-question:hover{color:var(--accent)}
.faq-arrow{
  width:24px;height:24px;border-radius:50%;
  background:rgba(10,132,255,0.1);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;transition:var(--transition);font-size:0.7rem;color:var(--primary);
}
.faq-item.open .faq-arrow{transform:rotate(180deg);background:var(--primary);color:#fff}
.faq-answer{
  max-height:0;overflow:hidden;transition:max-height 0.4s ease,padding 0.3s ease;
  color:var(--text-secondary);font-size:0.9rem;line-height:1.7;
}
.faq-item.open .faq-answer{max-height:300px;padding:0 24px 20px}

/* ===== 品牌连接 ===== */
.connect-section{
  background:url('../images/connect-bg.jpg') center/cover no-repeat;
  position:relative;
}
.connect-section::before{content:'';position:absolute;inset:0;background:rgba(5,10,20,0.85)}
.connect-section .section-inner{position:relative;z-index:1}
.connect-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.connect-card{
  padding:32px;border-radius:var(--radius);
  background:rgba(13,21,38,0.85);border:1px solid var(--border);
  backdrop-filter:blur(12px);text-align:center;
  transition:var(--transition);
}
.connect-card:hover{transform:translateY(-4px);border-color:rgba(10,132,255,0.3)}
.connect-icon{font-size:2.5rem;margin-bottom:16px}
.connect-card h3{font-size:1.1rem;font-weight:700;margin-bottom:10px}
.connect-card p{color:var(--text-secondary);font-size:0.875rem}
.connect-card .btn-connect{
  display:inline-block;margin-top:20px;padding:10px 24px;
  border-radius:8px;background:rgba(10,132,255,0.15);
  border:1px solid rgba(10,132,255,0.3);color:var(--accent);
  font-size:0.875rem;font-weight:600;transition:var(--transition);
}
.connect-card .btn-connect:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ===== 联系模块 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.contact-info h2{font-size:2rem;font-weight:800;margin-bottom:20px}
.contact-info p{color:var(--text-secondary);margin-bottom:32px}
.contact-items{display:flex;flex-direction:column;gap:16px}
.contact-item{
  display:flex;align-items:center;gap:16px;
  padding:16px;border-radius:var(--radius-sm);
  background:var(--bg-card);border:1px solid var(--border);
}
.contact-item .ci-icon{
  width:44px;height:44px;border-radius:10px;
  background:rgba(10,132,255,0.12);
  display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0;
}
.contact-item .ci-text h4{font-size:0.85rem;color:var(--text-muted);margin-bottom:2px}
.contact-item .ci-text p{font-size:0.95rem;font-weight:600}
.map-placeholder{
  border-radius:var(--radius);overflow:hidden;
  background:var(--bg-card);border:1px solid var(--border);
  height:320px;display:flex;align-items:center;justify-content:center;
  position:relative;
}
.map-placeholder::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(10,132,255,0.05),rgba(124,58,237,0.05));
}
.map-inner{text-align:center;position:relative;z-index:1}
.map-inner .map-pin{font-size:3rem;margin-bottom:12px;animation:bounce 2s ease infinite}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.map-inner p{color:var(--text-secondary);font-size:0.9rem}

/* ===== 页脚 ===== */
.footer{
  background:#030710;border-top:1px solid var(--border);
  padding:60px 24px 30px;
}
.footer-inner{max-width:1280px;margin:0 auto}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}
.footer-brand .logo{
  font-size:1.8rem;font-weight:900;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  margin-bottom:14px;
}
.footer-brand p{color:var(--text-muted);font-size:0.875rem;line-height:1.7;margin-bottom:20px}
.social-links{display:flex;gap:10px}
.social-link{
  width:38px;height:38px;border-radius:8px;
  background:rgba(255,255,255,0.05);border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  font-size:0.9rem;transition:var(--transition);
}
.social-link:hover{background:var(--primary);border-color:var(--primary)}
.footer-col h4{font-size:0.9rem;font-weight:700;margin-bottom:16px;color:var(--text-primary)}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{color:var(--text-muted);font-size:0.875rem;transition:var(--transition)}
.footer-col ul li a:hover{color:var(--accent)}
.footer-qr{display:flex;gap:20px;margin-top:16px}
.qr-item{text-align:center}
.qr-box{
  width:80px;height:80px;border-radius:8px;
  background:rgba(255,255,255,0.05);border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  font-size:0.6rem;color:var(--text-muted);margin-bottom:6px;
  position:relative;overflow:hidden;
}
.qr-box::before{
  content:'';position:absolute;inset:4px;
  border:2px solid rgba(10,132,255,0.3);border-radius:4px;
}
.qr-label{font-size:0.72rem;color:var(--text-muted)}
.footer-bottom{
  padding-top:24px;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
}
.footer-bottom p{color:var(--text-muted);font-size:0.8rem}
.footer-links{display:flex;gap:20px}
.footer-links a{color:var(--text-muted);font-size:0.8rem;transition:var(--transition)}
.footer-links a:hover{color:var(--accent)}

/* ===== 信任徽章 ===== */
.trust-section{background:var(--bg-card2);padding:40px 24px}
.trust-inner{max-width:1280px;margin:0 auto;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:40px}
.trust-item{display:flex;align-items:center;gap:10px;color:var(--text-muted);font-size:0.875rem}
.trust-item .ti-icon{font-size:1.4rem;color:var(--primary)}

/* ===== 合作伙伴 ===== */
.partners-row{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:32px;margin-top:40px}
.partner-badge{
  padding:12px 24px;border-radius:8px;
  background:rgba(255,255,255,0.04);border:1px solid var(--border);
  color:var(--text-muted);font-size:0.875rem;font-weight:600;
  transition:var(--transition);
}
.partner-badge:hover{border-color:rgba(10,132,255,0.3);color:var(--text-primary)}

/* ===== 内页通用 ===== */
.page-hero{
  padding:140px 24px 80px;text-align:center;
  background:linear-gradient(180deg,#080f1e 0%,var(--bg-dark) 100%);
  border-bottom:1px solid var(--border);
}
.page-hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:900;margin-bottom:16px}
.page-hero p{color:var(--text-secondary);font-size:1.1rem;max-width:600px;margin:0 auto}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  color:var(--text-muted);font-size:0.85rem;
  justify-content:center;margin-bottom:24px;
}
.breadcrumb a{color:var(--text-muted);transition:var(--transition)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span{color:var(--text-muted)}

/* ===== 动画 ===== */
.fade-in{opacity:0;transform:translateY(20px);transition:opacity 0.6s ease,transform 0.6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}
.slide-in-left{opacity:0;transform:translateX(-30px);transition:opacity 0.6s ease,transform 0.6s ease}
.slide-in-left.visible{opacity:1;transform:translateX(0)}
.slide-in-right{opacity:0;transform:translateX(30px);transition:opacity 0.6s ease,transform 0.6s ease}
.slide-in-right.visible{opacity:1;transform:translateX(0)}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .story-grid,.contact-grid{grid-template-columns:1fr;gap:40px}
  .explore-grid,.inspire-grid,.connect-grid{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:768px){
  .nav-menu{display:none;position:fixed;top:64px;left:0;right:0;bottom:0;
    background:rgba(5,10,20,0.98);flex-direction:column;align-items:center;justify-content:center;
    gap:8px;z-index:999}
  .nav-menu.open{display:flex}
  .nav-menu a{font-size:1.1rem;padding:12px 24px}
  .nav-toggle{display:flex}
  .nav-actions .btn-nav{display:none}
  .section{padding:60px 16px}
  .hero-stats{gap:24px}
  .explore-grid,.inspire-grid,.connect-grid{grid-template-columns:1fr}
  .create-grid{grid-template-columns:1fr}
  .create-card:first-child{grid-column:auto}
  .footer-top{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;text-align:center}
  .video-grid{grid-template-columns:1fr}
  .reviews-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .hero-title{font-size:2rem}
  .hero-actions{flex-direction:column;align-items:center}
  .btn-primary,.btn-outline{width:100%;max-width:280px;text-align:center}
}

/* ===== 加载动画 ===== */
.page-loader{
  position:fixed;inset:0;background:var(--bg-dark);
  display:flex;align-items:center;justify-content:center;
  z-index:9999;transition:opacity 0.5s ease,visibility 0.5s ease;
}
.page-loader.hidden{opacity:0;visibility:hidden}
.loader-logo{
  font-size:3rem;font-weight:900;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  animation:pulse 1.5s ease infinite;
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:0.6;transform:scale(0.95)}}

/* ===== 视频模态框 ===== */
.video-modal{
  position:fixed;inset:0;background:rgba(0,0,0,0.9);
  z-index:2000;display:none;align-items:center;justify-content:center;
  padding:20px;
}
.video-modal.open{display:flex}
.video-modal-inner{
  width:100%;max-width:900px;
  background:var(--bg-card);border-radius:var(--radius);
  overflow:hidden;position:relative;
}
.video-modal-close{
  position:absolute;top:12px;right:12px;z-index:1;
  width:36px;height:36px;border-radius:50%;
  background:rgba(0,0,0,0.6);color:#fff;font-size:1.2rem;
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:var(--transition);
}
.video-modal-close:hover{background:var(--primary)}
.video-placeholder{
  aspect-ratio:16/9;background:#000;
  display:flex;align-items:center;justify-content:center;
  flex-direction:column;gap:16px;
}
.video-placeholder .vp-icon{font-size:4rem;color:var(--primary)}
.video-placeholder p{color:var(--text-secondary);font-size:0.9rem}