/* === 雷电模拟器官网 — 全平台正版下载 === */
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"SF Pro Text","PingFang SC","Microsoft YaHei",sans-serif;color:#1d1d1f;background:#fff;line-height:1.7}
a{color:inherit;text-decoration:none}
.container{max-width:1240px;margin:0 auto;padding:0 24px}

/* Header */
header{padding:16px 0;background:#fff;border-bottom:1px solid #f0f0f0;position:sticky;top:0;z-index:50}
header .container{display:flex;justify-content:space-between;align-items:center}
.brand{display:flex;align-items:center;gap:10px;font-size:21px;font-weight:800;color:#0ea5e9}
.brand img{height:36px}
.menu{display:flex;gap:30px;font-size:14px;color:#444}
.menu a:hover{color:#0ea5e9}
.dl-btn{padding:10px 24px;background:linear-gradient(135deg,#0284c7,#0ea5e9);color:#fff;border-radius:24px;font-weight:700;font-size:14px;transition:.3s}
.dl-btn:hover{transform:translateY(-2px)}

/* Hero */
.hero{padding:80px 0 100px;background:linear-gradient(180deg,#fff 0%,#e0f2fe 100%);position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;width:500px;height:500px;border-radius:50%;background:radial-gradient(circle,rgba(14,165,233,.08),transparent);bottom:-200px;left:-100px}
.hero-wrap{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;position:relative;z-index:2}
.eyebrow{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;background:rgba(14,165,233,.1);color:#0284c7;border-radius:18px;font-size:12px;font-weight:700;margin-bottom:20px}
.hero h1{font-size:52px;font-weight:800;line-height:1.15;color:#1d1d1f;margin-bottom:22px;letter-spacing:-1px}
.hero h1 .blue{color:#0ea5e9}
.hero p{color:#5a5a64;font-size:17px;margin-bottom:32px;max-width:520px;line-height:1.7}
.btn-row{display:flex;gap:14px;margin-bottom:36px;flex-wrap:wrap}
.btn-primary{display:inline-flex;align-items:center;gap:10px;padding:16px 32px;background:linear-gradient(135deg,#0284c7,#0ea5e9);color:#fff;border-radius:26px;font-weight:700;font-size:15px;box-shadow:0 12px 30px rgba(14,165,233,.35);transition:.3s}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(14,165,233,.5)}
.btn-outline{padding:15px 28px;background:#fff;border:2px solid #1d1d1f;color:#1d1d1f;border-radius:26px;font-weight:600;font-size:15px;transition:.3s}
.mock-window{position:relative;height:440px;background:#fff;border-radius:18px;box-shadow:0 30px 60px rgba(0,0,0,.12);padding:16px;border:1px solid #f0f0f0;overflow:hidden}
.mock-top{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;background:#f5f5f7;border-radius:10px;margin-bottom:14px}
.mock-dots{display:flex;gap:5px}
.mock-dots i{width:10px;height:10px;border-radius:50%;background:#ddd;display:block}
.mock-dots i:nth-child(1){background:#ff5f57}
.mock-dots i:nth-child(2){background:#febc2e}
.mock-dots i:nth-child(3){background:#28c840}
.mock-url{flex:1;margin:0 12px;padding:6px 14px;background:#fff;border-radius:14px;font-size:11px;color:#666;display:flex;align-items:center;gap:6px}
.mock-body{height:340px;border-radius:12px;position:relative;overflow:hidden}
.mock-badge{position:absolute;bottom:20px;right:20px;width:130px;height:80px;background:linear-gradient(135deg,#0284c7,#0ea5e9);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:24px;border:3px solid #1d1d1f;box-shadow:0 10px 25px rgba(0,0,0,.4)}

/* Sections */
section{padding:90px 0}
.sec-h{text-align:center;margin-bottom:60px}
.sec-h h2{font-size:40px;font-weight:800;color:#1d1d1f;margin-bottom:14px;letter-spacing:-.5px}
.sec-h h2 .blue{color:#0ea5e9}
.sec-h p{color:#666;font-size:16px;max-width:620px;margin:0 auto}

/* Feature Cards */
.feature-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.f-card{background:#fff;padding:32px 28px;border-radius:18px;transition:.3s;border:1px solid #f0f0f0;position:relative;overflow:hidden}
.f-card:hover{border-color:#0ea5e9;transform:translateY(-6px);box-shadow:0 18px 40px rgba(14,165,233,.12)}
.f-card .ic{width:60px;height:60px;border-radius:14px;background:linear-gradient(135deg,#0284c7,#0ea5e9);color:#fff;display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:18px}
.f-card h3{font-size:18px;margin-bottom:10px;font-weight:700}
.f-card p{color:#666;font-size:14px;line-height:1.7}

/* Dark Section */
.dark-section{background:linear-gradient(135deg,#0c4a6e,#1a1a2e);color:#fff}
.dark-section .sec-h h2{color:#fff}
.dark-section .sec-h p{color:#aaa}
.dark-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.dark-text h3{font-size:32px;color:#fff;margin-bottom:18px;font-weight:800;line-height:1.3}
.dark-text h3 .blue{color:#38bdf8}
.dark-text>p{color:#bbb;font-size:15px;margin-bottom:26px;line-height:1.8}
.dark-features{display:flex;flex-direction:column;gap:14px}
.df{padding:18px 22px;background:rgba(14,165,233,.08);border-radius:14px;border:1px solid rgba(14,165,233,.2);display:flex;gap:16px;align-items:flex-start}
.df .em{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,#0284c7,#0ea5e9);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.df strong{color:#fff;display:block;margin-bottom:4px;font-size:15px}
.df span{color:#bbb;font-size:13px}
.dark-mock{height:420px;background:#0f172a;border-radius:24px;border:1px solid #1e293b;overflow:hidden;position:relative}

/* Multi-instance Section */
.multi-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.multi-text h3{font-size:32px;color:#1d1d1f;margin-bottom:18px;font-weight:800;line-height:1.3}
.multi-text h3 .blue{color:#0ea5e9}
.multi-text>p{color:#666;font-size:15px;margin-bottom:24px;line-height:1.8}
.multi-demo{position:relative;height:380px;background:#f5f5f7;border-radius:18px;border:1px solid #ececec;overflow:hidden}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
.multi-demo .badge{position:absolute;bottom:30px;right:30px;width:130px;height:80px;background:linear-gradient(135deg,#0284c7,#0ea5e9);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:24px;border:3px solid #fff;box-shadow:0 10px 25px rgba(14,165,233,.3);animation:bounce 2s ease-in-out infinite}
.multi-points{display:flex;flex-direction:column;gap:14px;margin-top:24px}
.multi-points li{list-style:none;padding:14px 18px;background:#fff;border-radius:12px;border:1px solid #ececec;display:flex;gap:12px;align-items:center}
.multi-points .em{font-size:22px}
.multi-points strong{font-size:14px;color:#1d1d1f}
.multi-points span{font-size:13px;color:#666}

/* Steps Section */
.steps-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;text-align:center}
.steps-step{padding:30px 18px;background:#fff;border-radius:16px;border:1px solid #f0f0f0;transition:.3s;position:relative}
.steps-step:hover{border-color:#0ea5e9;transform:translateY(-4px)}
.steps-step .num{width:50px;height:50px;border-radius:50%;background:linear-gradient(135deg,#0284c7,#0ea5e9);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:20px}
.steps-step h4{color:#1d1d1f;font-size:15px;margin-bottom:6px;font-weight:700}
.steps-step p{color:#666;font-size:13px}

/* FAQ */
.faq{background:#fafafa}
.faq-list{max-width:840px;margin:0 auto}
.faq-item{margin-bottom:12px;border-radius:14px;overflow:hidden;border:1px solid #ececec;background:#fff;transition:.3s}
.faq-item.open{border-color:#0ea5e9;box-shadow:0 6px 20px rgba(14,165,233,.08)}
.faq-q{padding:20px 26px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:15px;color:#1d1d1f}
.faq-q::after{content:"+";color:#0ea5e9;font-size:22px;transition:.3s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 26px;max-height:0;overflow:hidden;color:#666;font-size:14px;line-height:1.8;transition:.3s}
.faq-item.open .faq-a{padding:0 26px 22px;max-height:300px}

/* CTA */
.cta{background:linear-gradient(135deg,#0284c7,#0ea5e9);color:#fff;text-align:center;padding:80px 30px;border-radius:30px;margin:0 24px}
.cta h2{font-size:36px;font-weight:800;margin-bottom:14px}
.cta p{font-size:16px;margin-bottom:28px;opacity:.95}
.cta .btn-primary{background:#fff;color:#0284c7}

/* Footer */
footer{background:#1d1d1f;color:#aaa;padding:50px 0 24px;margin-top:60px}
.fgrid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:30px}
footer h5{color:#fff;margin-bottom:14px;font-size:14px}
footer ul{list-style:none}
footer ul li{margin-bottom:8px;font-size:13px}
footer ul li a:hover{color:#38bdf8}
.cp{border-top:1px solid #333;padding-top:20px;text-align:center;font-size:12px;color:#777}

/* Platform Tabs */
.platform-tabs{display:flex;justify-content:center;gap:8px;margin-bottom:40px}
.platform-tabs button{padding:12px 24px;background:#f5f5f7;border:2px solid transparent;border-radius:30px;font-size:14px;font-weight:600;color:#5a5a64;cursor:pointer;transition:.3s;display:flex;align-items:center;gap:6px}
.platform-tabs button.active{background:#fff;border-color:#0ea5e9;color:#0ea5e9}
.dl-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:960px;margin:0 auto}
.dl-card{background:#fff;padding:32px;border-radius:18px;border:1px solid #f0f0f0;text-align:center;transition:.3s}
.dl-card:hover{border-color:#0ea5e9;transform:translateY(-4px);box-shadow:0 12px 30px rgba(14,165,233,.1)}
.dl-card.recommended{border-color:#0ea5e9;position:relative}
.dl-card.recommended::before{content:"推荐";position:absolute;top:-12px;right:20px;background:linear-gradient(135deg,#0284c7,#0ea5e9);color:#fff;padding:4px 14px;border-radius:12px;font-size:12px;font-weight:700}
.dl-card .os-icon{font-size:48px;margin-bottom:16px}
.dl-card h3{color:#1d1d1f;font-size:20px;margin-bottom:8px}
.dl-card .ver{color:#999;font-size:13px;margin-bottom:14px}
.dl-card .dl-btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;background:linear-gradient(135deg,#0284c7,#0ea5e9);color:#fff;border-radius:24px;font-weight:700;font-size:14px;transition:.3s;border:none;cursor:pointer}
.dl-card .dl-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(14,165,233,.4)}
.dl-card .dl-features{text-align:left;margin-top:20px;font-size:13px;color:#666;list-style:none}
.dl-card .dl-features li{margin:6px 0;padding-left:16px;position:relative}
.dl-card .dl-features li::before{content:"✓";position:absolute;left:0;color:#28c840;font-weight:700}

/* Breadcrumb */
.breadcrumb{padding:16px 0;color:#999;font-size:13px}
.breadcrumb a{color:#666}
.breadcrumb a:hover{color:#0ea5e9}
.breadcrumb span{color:#0ea5e9}

/* Article */
.article-page{padding:60px 0}
.article-header{text-align:center;margin-bottom:40px}
.article-header .a-meta{color:#999;font-size:14px;margin-bottom:12px}
.article-header h1{font-size:36px;font-weight:800;color:#1d1d1f;margin-bottom:14px;line-height:1.3}
.article-header p{color:#666;font-size:15px;max-width:640px;margin:0 auto}
.article-body{max-width:780px;margin:0 auto;font-size:15px;line-height:2;color:#555}
.article-body h2{font-size:24px;font-weight:700;color:#1d1d1f;margin:36px 0 14px}
.article-body h3{font-size:19px;font-weight:700;color:#1d1d1f;margin:28px 0 10px}
.article-body p{margin-bottom:18px}
.article-body ul,.article-body ol{margin:14px 0 22px 24px}
.article-body li{margin:8px 0}
.article-body strong{color:#0284c7}
.article-body blockquote{padding:18px 24px;background:#f0f9ff;border-left:4px solid #0ea5e9;border-radius:0 10px 10px 0;margin:24px 0;color:#555;border:1px solid #e0f2fe}
.article-footer{margin-top:48px;padding-top:24px;border-top:1px solid #f0f0f0;text-align:center;color:#999;font-size:13px}

/* 404 */
.error-page{text-align:center;padding:120px 20px}
.error-page .err-code{font-size:100px;font-weight:800;background:linear-gradient(135deg,#0284c7,#0ea5e9);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.error-page h2{color:#1d1d1f;font-size:24px;margin:20px 0 12px}
.error-page p{color:#666;margin-bottom:28px}
.error-page .back-btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;background:linear-gradient(135deg,#0284c7,#0ea5e9);color:#fff;border-radius:26px;font-weight:700;transition:.3s}
.error-page .back-btn:hover{transform:translateY(-2px)}

/* Responsive */
@media(max-width:768px){
  .hero-wrap,.dark-grid,.multi-grid,.feature-cards,.fgrid,.steps-flow,.dl-cards{grid-template-columns:1fr}
  .menu{display:none}
  .hero h1{font-size:32px}
  .sec-h h2{font-size:28px}
  .article-header h1{font-size:26px}
  .platform-tabs{flex-wrap:wrap}
  section{padding:60px 0}
  .cta{margin:0 12px;padding:50px 20px}
}
@media(max-width:480px){
  .hero h1{font-size:26px}
  .btn-row{flex-direction:column}
}