/* 旋风加速器官网 - 主样式表 */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;color:#333;background:#f5f7fa;line-height:1.6}
a{text-decoration:none;color:inherit}
img{max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* 顶部导航 */
.header{background:linear-gradient(135deg,#1a1a2e 0%,#16213e 50%,#0f3460 100%);position:sticky;top:0;z-index:999;box-shadow:0 2px 20px rgba(0,0,0,.3)}
.header .container{display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:70px}
.logo{display:flex;align-items:center;gap:12px}
.logo-icon{width:42px;height:42px;background:linear-gradient(135deg,#00d4ff,#0099ff);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;font-weight:bold}
.logo-text{font-size:22px;font-weight:700;color:#fff;letter-spacing:1px}
.logo-text span{color:#00d4ff}
.nav{display:flex;align-items:center;gap:30px}
.nav a{color:#b0c4de;font-size:15px;font-weight:500;transition:color .3s;position:relative}
.nav a:hover,.nav a.active{color:#00d4ff}
.nav a.active::after{content:'';position:absolute;bottom:-6px;left:0;width:100%;height:2px;background:#00d4ff;border-radius:1px}
.nav .btn-download{background:linear-gradient(135deg,#00d4ff,#0099ff);color:#fff!important;padding:10px 24px;border-radius:25px;font-weight:600;transition:transform .3s,box-shadow .3s}
.nav .btn-download:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,212,255,.4)}

/* Hero区域 */
.hero{background:linear-gradient(135deg,#1a1a2e 0%,#16213e 40%,#0f3460 100%);padding:80px 0 100px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(0,212,255,0.08) 0%,transparent 70%);border-radius:50%}
.hero .container{position:relative;z-index:1}
.hero-content{max-width:650px}
.hero h1{font-size:48px;font-weight:800;color:#fff;line-height:1.2;margin-bottom:20px}
.hero h1 span{color:#00d4ff}
.hero p{font-size:18px;color:#b0c4de;margin-bottom:35px;line-height:1.8}
.hero-buttons{display:flex;gap:18px;flex-wrap:wrap}
.hero-buttons a{display:inline-block;padding:14px 36px;border-radius:30px;font-size:16px;font-weight:600;transition:transform .3s,box-shadow .3s}
.hero-buttons a:hover{transform:translateY(-3px)}
.btn-primary{background:linear-gradient(135deg,#00d4ff,#0099ff);color:#fff;box-shadow:0 4px 20px rgba(0,212,255,.35)}
.btn-secondary{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.25)}
.hero-stats{display:flex;gap:50px;margin-top:50px}
.stat-item{text-align:center}
.stat-num{font-size:36px;font-weight:800;color:#00d4ff;display:block}
.stat-label{font-size:14px;color:#8899aa;margin-top:5px}

/* 通用section */
.section{padding:80px 0}
.section-title{text-align:center;margin-bottom:50px}
.section-title h2{font-size:36px;font-weight:700;color:#1a1a2e;margin-bottom:12px}
.section-title p{font-size:16px;color:#667;max-width:600px;margin:0 auto}

/* 特点卡片 */
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:25px}
.feature-card{background:#fff;border-radius:16px;padding:35px 30px;box-shadow:0 4px 20px rgba(0,0,0,.06);transition:transform .3s,box-shadow .3s}
.feature-card:hover{transform:translateY(-5px);box-shadow:0 10px 35px rgba(0,0,0,.12)}
.feature-icon{width:56px;height:56px;background:linear-gradient(135deg,#e8f4fd,#d0eaff);border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:20px}
.feature-card h3{font-size:20px;color:#1a1a2e;margin-bottom:12px}
.feature-card p{color:#667;font-size:15px;line-height:1.7}

/* 平台支持 */
.platform-section{background:#fff}
.platform-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px;text-align:center}
.platform-item{background:#f8fafc;border-radius:14px;padding:30px 20px;transition:transform .3s}
.platform-item:hover{transform:translateY(-5px)}
.platform-icon{font-size:42px;margin-bottom:12px}
.platform-item h4{font-size:16px;color:#1a1a2e;margin-bottom:8px}
.platform-item a{display:inline-block;background:linear-gradient(135deg,#00d4ff,#0099ff);color:#fff;padding:8px 24px;border-radius:20px;font-size:14px;font-weight:600;margin-top:10px;transition:transform .3s}
.platform-item a:hover{transform:scale(1.05)}

/* 性价比 */
.pricing-section{background:linear-gradient(135deg,#1a1a2e,#0f3460);color:#fff}
.pricing-section .section-title h2{color:#fff}
.pricing-section .section-title p{color:#b0c4de}
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:25px}
.pricing-card{background:rgba(255,255,255,.08);border-radius:16px;padding:35px 25px;text-align:center;border:1px solid rgba(255,255,255,.1);transition:transform .3s}
.pricing-card:hover{transform:translateY(-5px)}
.pricing-card.featured{background:rgba(0,212,255,.15);border-color:rgba(0,212,255,.4)}
.pricing-badge{display:inline-block;background:#00d4ff;color:#1a1a2e;padding:4px 16px;border-radius:12px;font-size:13px;font-weight:700;margin-bottom:15px}
.pricing-card h3{font-size:22px;margin-bottom:15px}
.pricing-price{font-size:42px;font-weight:800;color:#00d4ff;margin-bottom:8px}
.pricing-price span{font-size:16px;color:#b0c4de}
.pricing-features{list-style:none;margin:20px 0;text-align:left;padding:0 10px}
.pricing-features li{padding:8px 0;color:#b0c4de;font-size:14px;border-bottom:1px solid rgba(255,255,255,.06)}
.pricing-features li::before{content:'✓ ';color:#00d4ff;font-weight:bold}
.pricing-card a{display:inline-block;width:100%;background:linear-gradient(135deg,#00d4ff,#0099ff);color:#fff;padding:12px 0;border-radius:25px;font-size:16px;font-weight:600;margin-top:10px;transition:transform .3s}
.pricing-card a:hover{transform:scale(1.03)}

/* CTA */
.cta-section{background:linear-gradient(135deg,#00d4ff,#0099ff);text-align:center;padding:70px 0}
.cta-section h2{font-size:36px;color:#fff;margin-bottom:15px}
.cta-section p{color:rgba(255,255,255,.85);margin-bottom:30px;font-size:17px}
.cta-section a{display:inline-block;background:#fff;color:#0099ff;padding:14px 40px;border-radius:30px;font-size:17px;font-weight:700;transition:transform .3s}
.cta-section a:hover{transform:translateY(-3px)}

/* FAQ */
.faq-section{background:#fff}
.faq-category{margin-bottom:40px}
.faq-category h3{font-size:22px;color:#1a1a2e;margin-bottom:20px;padding-bottom:10px;border-bottom:2px solid #00d4ff;display:inline-block}
.faq-item{background:#f8fafc;border-radius:12px;margin-bottom:15px;overflow:hidden;border:1px solid #e8ecf1}
.faq-q{padding:18px 24px;font-size:16px;font-weight:600;color:#1a1a2e;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.faq-q::after{content:'+';font-size:22px;color:#00d4ff}
.faq-a{padding:0 24px 20px;color:#556;font-size:15px;line-height:1.8}
.faq-a ol,.faq-a ul{margin-left:20px;margin-top:8px}
.faq-a ol li,.faq-a ul li{margin-bottom:8px}

/* 关于页面 */
.about-content{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;margin-top:40px}
.about-text p{margin-bottom:18px;color:#556;font-size:15px;line-height:1.9}
.about-image{background:linear-gradient(135deg,#1a1a2e,#0f3460);border-radius:20px;min-height:350px;display:flex;align-items:center;justify-content:center;font-size:80px}
.values-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;margin-top:30px}
.value-card{text-align:center;padding:30px 20px;background:#f8fafc;border-radius:14px}
.value-icon{font-size:40px;margin-bottom:12px}
.value-card h4{font-size:17px;color:#1a1a2e;margin-bottom:8px}
.value-card p{font-size:14px;color:#667}

/* 联系页面 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info h3{font-size:24px;color:#1a1a2e;margin-bottom:20px}
.contact-item{display:flex;align-items:flex-start;gap:15px;margin-bottom:25px}
.contact-item-icon{width:44px;height:44px;background:linear-gradient(135deg,#e8f4fd,#d0eaff);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.contact-item h4{font-size:16px;color:#1a1a2e;margin-bottom:4px}
.contact-item p{color:#667;font-size:14px}
.contact-form{background:#fff;border-radius:16px;padding:30px;box-shadow:0 4px 20px rgba(0,0,0,.06)}
.contact-form input,.contact-form textarea{width:100%;padding:12px 16px;margin-bottom:16px;border:1px solid #dde;border-radius:8px;font-size:14px;transition:border .3s}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:#00d4ff}
.contact-form textarea{min-height:120px;resize:vertical}

/* 下载页面 */
.download-section{background:#fff}
.download-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:25px}
.download-card{background:#f8fafc;border-radius:16px;padding:35px 25px;text-align:center;border:1px solid #e8ecf1;transition:transform .3s,box-shadow .3s}
.download-card:hover{transform:translateY(-5px);box-shadow:0 10px 35px rgba(0,0,0,.12)}
.download-icon{font-size:48px;margin-bottom:15px}
.download-card h3{font-size:20px;color:#1a1a2e;margin-bottom:8px}
.download-card .version{color:#999;font-size:13px;margin-bottom:12px}
.download-card .size{color:#667;font-size:14px;margin-bottom:18px}
.download-card a{display:inline-block;background:linear-gradient(135deg,#00d4ff,#0099ff);color:#fff;padding:12px 30px;border-radius:25px;font-size:15px;font-weight:600;transition:transform .3s}
.download-card a:hover{transform:scale(1.05)}

/* 使用教程 */
.guide-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:25px}
.guide-step{text-align:center;position:relative}
.guide-step-num{width:50px;height:50px;background:linear-gradient(135deg,#00d4ff,#0099ff);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;margin:0 auto 15px}
.guide-step h4{font-size:17px;color:#1a1a2e;margin-bottom:8px}
.guide-step p{color:#667;font-size:14px}

/* 页脚 */
.footer{background:#1a1a2e;color:#8899aa;padding:50px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-about p{margin-top:12px;font-size:14px;line-height:1.8}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px}
.footer-col a{display:block;color:#8899aa;font-size:14px;margin-bottom:10px;transition:color .3s}
.footer-col a:hover{color:#00d4ff}
.footer-bottom{text-align:center;padding:20px 0;font-size:13px}

/* 面包屑 */
.breadcrumb{background:#f0f3f8;padding:14px 0;font-size:14px;color:#667}
.breadcrumb a{color:#0099ff}
.breadcrumb span{color:#999}

/* 页面标题 */
.page-header{background:linear-gradient(135deg,#1a1a2e,#0f3460);padding:60px 0;text-align:center;color:#fff}
.page-header h1{font-size:38px;font-weight:800;margin-bottom:10px}
.page-header p{color:#b0c4de;font-size:16px}

/* 响应式 */
@media(max-width:768px){
  .nav{gap:15px;flex-wrap:wrap;justify-content:center}
  .nav a{font-size:13px}
  .hero h1{font-size:32px}
  .hero-stats{flex-wrap:wrap;gap:25px}
  .features-grid{grid-template-columns:1fr}
  .about-content{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .pricing-grid{grid-template-columns:1fr}
  .download-grid{grid-template-columns:1fr}
  .section-title h2{font-size:28px}
  .header .container{flex-wrap:wrap;height:auto;padding:10px 20px}
  .header .nav{order:3;width:100%;justify-content:center;padding:8px 0}
}