*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#7c3aed;
  --primary-dark:#6d28d9;
  --primary-light:#ede9fe;
  --secondary:#f5f3ff;
  --accent:#c4b5fd;
  --text:#1f2937;
  --text-light:#6b7280;
  --text-lighter:#9ca3af;
  --bg:#ffffff;
  --bg-soft:#fafafa;
  --bg-soft-2:#f5f3ff;
  --border:#e5e7eb;
  --border-light:#f3f4f6;
  --success:#10b981;
  --danger:#ef4444;
  --radius:16px;
  --radius-lg:24px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(124,58,237,.05);
  --shadow:0 4px 20px rgba(124,58,237,.08);
  --shadow-lg:0 20px 60px rgba(124,58,237,.15);
}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:'Inter','Noto Sans SC',system-ui,-apple-system,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
  overflow-x:hidden;
}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:all .2s}
button{cursor:pointer;font-family:inherit;border:none;background:none}
ul,ol{list-style:none}

/* 风险提示条 */
.risk-bar{
  background:#fef3c7;
  color:#92400e;
  font-size:.82rem;
  padding:8px 0;
  text-align:center;
}
.risk-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:center;gap:8px}
.risk-dot{width:6px;height:6px;border-radius:50%;background:#f59e0b;flex-shrink:0}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 20px;border-radius:12px;font-weight:500;font-size:.92rem;
  transition:all .2s;white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 8px 20px rgba(124,58,237,.25)}
.btn-secondary{background:var(--primary-light);color:var(--primary)}
.btn-secondary:hover{background:var(--accent)}
.btn-outline{border:1.5px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-ghost{color:var(--text-light)}
.btn-ghost:hover{color:var(--primary);background:var(--primary-light)}
.btn-ghost-sm{padding:6px 14px;border-radius:8px;font-size:.85rem;color:var(--text-light)}
.btn-ghost-sm:hover{color:var(--primary);background:var(--primary-light)}
.btn-primary-sm{padding:6px 14px;border-radius:8px;font-size:.85rem;background:var(--primary);color:#fff}
.btn-primary-sm:hover{background:var(--primary-dark)}
.btn-lg{padding:14px 28px;font-size:1rem;border-radius:14px}
.btn-xl{padding:16px 32px;font-size:1.05rem;border-radius:14px}
.btn-sm{padding:7px 14px;font-size:.85rem;border-radius:8px}
.btn-block{width:100%}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.8);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:all .3s;
}
.site-header.scrolled{
  background:rgba(255,255,255,.95);
  border-bottom-color:var(--border-light);
  box-shadow:var(--shadow-sm);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.25rem}
.logo-mark{
  width:36px;height:36px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.1rem;
}
.main-nav{display:flex;align-items:center;gap:28px}
.main-nav a{font-size:.92rem;color:var(--text-light);font-weight:500}
.main-nav a:hover{color:var(--primary)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-cta-mobile{display:none;flex-direction:column;gap:10px;margin-top:20px;padding-top:20px;border-top:1px solid var(--border-light)}
.menu-toggle{display:none;flex-direction:column;gap:5px;width:40px;height:40px;align-items:center;justify-content:center;border-radius:10px}
.menu-toggle span{width:20px;height:2px;background:var(--text);border-radius:2px;transition:all .3s}
.menu-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.menu-toggle.active span:nth-child(2){opacity:0}
.menu-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* Hero */
.hero{padding:80px 0 100px;position:relative;overflow:hidden}
.hero-bg-glow{
  position:absolute;top:-200px;left:50%;transform:translateX(-50%);
  width:800px;height:800px;
  background:radial-gradient(circle,rgba(124,58,237,.08) 0%,transparent 70%);
  pointer-events:none;
}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center;position:relative}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--primary-light);color:var(--primary);
  padding:8px 16px;border-radius:100px;font-size:.85rem;font-weight:500;
  margin-bottom:24px;
}
.badge-dot{width:6px;height:6px;border-radius:50%;background:var(--primary);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
.hero-title{font-size:clamp(2rem,4vw,3.2rem);font-weight:700;line-height:1.2;margin-bottom:20px}
.gradient-text{background:linear-gradient(135deg,var(--primary),#a855f7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-subtitle{font-size:1.1rem;color:var(--text-light);line-height:1.7;margin-bottom:32px;max-width:520px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:32px}
.hero-contact{display:flex;align-items:center;gap:8px;color:var(--text-light);font-size:.95rem}
.hero-contact svg{color:var(--primary)}
.hero-contact a{color:var(--primary);font-weight:600}
.hero-image-wrap{
  border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-lg);
  border:1px solid var(--border-light);
}
.hero-banner{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-float-card{
  position:absolute;background:#fff;border-radius:16px;
  padding:16px;box-shadow:var(--shadow);
  display:flex;align-items:center;gap:12px;
  border:1px solid var(--border-light);
}
.card-1{bottom:20px;left:-20px;animation:float 4s ease-in-out infinite}
.card-2{top:40px;right:-20px;animation:float 4s ease-in-out infinite 2s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.float-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.2rem}
.float-icon.win{background:#dbeafe;color:#2563eb}
.float-icon.mac{background:#f3f4f6;color:#374151;position:relative}
.float-icon.mac::before{content:"";width:20px;height:24px;background:currentColor;border-radius:6px;mask:radial-gradient(circle 6px at 30% 30%,transparent 99%,currentColor)}
.float-text strong{display:block;font-size:.9rem;margin-bottom:2px}
.float-text span{font-size:.78rem;color:var(--text-lighter)}

/* 区块通用 */
section{padding:80px 0}
.section-header{margin-bottom:48px}
.section-header.center{text-align:center}
.section-tag{
  display:inline-block;background:var(--primary-light);color:var(--primary);
  padding:6px 14px;border-radius:100px;font-size:.82rem;font-weight:500;
  margin-bottom:16px;
}
.section-header h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;margin-bottom:12px}
.section-desc{color:var(--text-light);font-size:1rem;max-width:600px;margin:0 auto}

/* 平台分类 */
.platforms{background:var(--bg-soft)}
.platforms-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.platform-card{
  background:#fff;border-radius:var(--radius);padding:32px;
  border:1px solid var(--border-light);
  transition:all .3s;
}
.platform-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--primary-light)}
.platform-icon{
  width:56px;height:56px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:1.4rem;color:#fff;margin-bottom:20px;
}
.platform-icon.sm{width:44px;height:44px;border-radius:10px;font-size:1rem;margin-bottom:0;flex-shrink:0}
.platform-icon.okx{background:linear-gradient(135deg,#165DFF,#3b82f6)}
.platform-icon.binance{background:linear-gradient(135deg,#f3ba2f,#f59e0b)}
.platform-icon.bitget{background:linear-gradient(135deg,#00d4ff,#0ea5e9)}
.platform-icon.bybit{background:linear-gradient(135deg,#f7a600,#ea580c)}
.platform-icon.kraken{background:linear-gradient(135deg,#5841d8,#7c3aed)}
.platform-icon.more{background:linear-gradient(135deg,#9ca3af,#6b7280)}
.platform-card h3{font-size:1.2rem;font-weight:600;margin-bottom:10px}
.platform-card p{color:var(--text-light);font-size:.92rem;line-height:1.6;margin-bottom:16px}
.platform-devices{display:flex;gap:8px;margin-bottom:20px}
.platform-devices span{
  width:32px;height:32px;border-radius:8px;
  background:var(--bg-soft-2);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:.85rem;
}
.platform-actions{display:flex;gap:10px}
.platform-card-more{background:var(--primary-light);border-color:var(--accent)}

/* 下载中心 */
.device-tabs{display:flex;gap:8px;margin-bottom:40px;justify-content:center;flex-wrap:wrap;padding:8px;background:var(--bg-soft);border-radius:16px;max-width:600px;margin-left:auto;margin-right:auto}
.device-tab{
  display:flex;align-items:center;gap:8px;
  padding:12px 24px;border-radius:10px;
  font-size:.95rem;color:var(--text-light);font-weight:500;
  transition:all .2s;
}
.device-tab:hover{color:var(--primary);background:#fff}
.device-tab.active{background:#fff;color:var(--primary);box-shadow:var(--shadow-sm)}
.tab-icon{font-size:1.2rem}
.device-panel{display:none}
.device-panel.active{display:block;animation:fadeIn .3s}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.download-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.download-card{
  background:#fff;border:1px solid var(--border-light);border-radius:var(--radius);
  padding:24px;transition:all .3s;
}
.download-card:hover{border-color:var(--primary-light);box-shadow:var(--shadow)}
.download-card-head{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.download-card-head h4{font-size:1rem;font-weight:600}
.download-tag{
  display:inline-block;font-size:.72rem;
  background:var(--primary-light);color:var(--primary);
  padding:2px 8px;border-radius:6px;margin-top:4px;
}
.download-info{margin-bottom:20px}
.download-info li{
  padding:8px 0;font-size:.88rem;color:var(--text-light);
  border-bottom:1px dashed var(--border-light);
}
.download-info li:last-child{border-bottom:none}
.download-info li span{color:var(--text);font-weight:500}
.download-actions{display:flex;flex-direction:column;gap:8px}
.download-tip{
  background:var(--bg-soft-2);border-radius:var(--radius);
  padding:24px;display:flex;gap:20px;align-items:flex-start;margin-bottom:24px;
}
.tip-icon{
  width:48px;height:48px;border-radius:12px;
  background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0;
}
.download-tip h4{margin-bottom:8px;font-size:1.1rem}
.download-tip p{color:var(--text-light);font-size:.92rem}
.web-guide{background:#fff;border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:40px}
.web-guide h4{font-size:1.3rem;margin-bottom:12px}
.web-guide > p{color:var(--text-light);margin-bottom:24px}
.web-tips{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.web-tip-item{display:flex;gap:12px;align-items:flex-start}
.check-icon{
  width:28px;height:28px;border-radius:50%;
  background:#dcfce7;color:var(--success);
  display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0;
}
.web-tip-item strong{display:block;margin-bottom:4px}
.web-tip-item p{font-size:.88rem;color:var(--text-light)}

/* 功能介绍 */
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px;margin-bottom:32px}
.feature-card{
  background:#fff;border:1px solid var(--border-light);border-radius:var(--radius);
  padding:32px;transition:all .3s;
}
.feature-card:hover{border-color:var(--primary-light);box-shadow:var(--shadow);transform:translateY(-2px)}
.feature-icon{font-size:2rem;margin-bottom:16px}
.feature-card h3{font-size:1.15rem;font-weight:600;margin-bottom:8px}
.feature-card p{color:var(--text-light);font-size:.92rem;line-height:1.6}
.risk-notice{
  background:#fef3c7;border:1px solid #fde68a;
  border-radius:var(--radius);padding:20px 24px;
}
.risk-notice p{font-size:.9rem;color:#92400e;line-height:1.6}

/* 安装教程 */
.guide{background:var(--bg-soft)}
.guide-steps{
  display:flex;align-items:flex-start;justify-content:space-between;gap:0;
  position:relative;max-width:1000px;margin:0 auto;
}
.guide-step{flex:1;text-align:center;position:relative;z-index:1}
.step-num{
  width:64px;height:64px;border-radius:50%;
  background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:1.5rem;font-weight:700;margin:0 auto 20px;
  box-shadow:0 0 0 8px var(--bg-soft);
}
.step-content h3{font-size:1.1rem;font-weight:600;margin-bottom:8px}
.step-content p{font-size:.9rem;color:var(--text-light);padding:0 10px}
.step-line{
  flex:0 0 60px;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  margin-top:32px;position:relative;z-index:0;
}

/* 安全提示 */
.safety-card{
  background:linear-gradient(135deg,#fef2f2,#fff7ed);
  border:1px solid #fecaca;border-radius:var(--radius-lg);padding:48px;
}
.safety-header{text-align:center;margin-bottom:40px}
.safety-icon{font-size:3rem;display:block;margin-bottom:16px}
.safety-header h2{font-size:1.8rem;margin-bottom:8px}
.safety-header p{color:var(--text-light)}
.safety-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:20px}
.safety-item{display:flex;gap:14px;align-items:flex-start;background:#fff;border-radius:var(--radius);padding:20px}
.safety-check{
  width:32px;height:32px;border-radius:50%;flex-shrink:0;
  background:var(--success);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;
}
.safety-item h4{font-size:1rem;margin-bottom:6px}
.safety-item p{font-size:.88rem;color:var(--text-light);line-height:1.6}

/* 资讯列表 必须遵守的硬性规则 */
ul.article-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
  box-sizing: border-box;
}
ul.article-cards > li.article-card {
  min-width: 0;
  width: auto;
  max-width: none;
  margin: 0;
  float: none;
  box-sizing: border-box;
  background:#fff;border:1px solid var(--border-light);border-radius:var(--radius);
  overflow:hidden;transition:all .3s;
}
ul.article-cards > li.article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--primary-light)}
.article-card .card-thumb {
  width: 100%;
  overflow: hidden;
  aspect-ratio:16/9;
}
.article-card .card-thumb img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: cover;
  transition:transform .3s;
}
.article-card:hover .card-thumb img{transform:scale(1.05)}
.article-card .card-title {
  overflow-wrap: anywhere;
  font-size:1rem;font-weight:600;line-height:1.5;padding:16px 20px 8px;
}
.article-card .card-title a{color:var(--text)}
.article-card .card-title a:hover{color:var(--primary)}
.article-card .card-date {
  display: block;
  font-size:.8rem;color:var(--text-lighter);padding:0 20px 8px;
}
.article-card .card-summary {
  overflow-wrap: anywhere;
  font-size:.85rem;color:var(--text-light);line-height:1.6;padding:0 20px 20px;
}

/* FAQ */
.faq{background:var(--bg-soft)}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{
  background:#fff;border-radius:var(--radius);
  margin-bottom:12px;border:1px solid var(--border-light);overflow:hidden;
  transition:all .2s;
}
.faq-item:hover{border-color:var(--primary-light)}
.faq-item.active{border-color:var(--primary-light);box-shadow:var(--shadow-sm)}
.faq-q{
  width:100%;padding:20px 24px;text-align:left;
  font-size:.98rem;font-weight:500;display:flex;
  align-items:center;justify-content:space-between;gap:16px;
}
.faq-arrow{
  width:28px;height:28px;border-radius:50%;
  background:var(--bg-soft-2);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:.8rem;transition:transform .3s;flex-shrink:0;
}
.faq-item.active .faq-arrow{transform:rotate(180deg);background:var(--primary);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.active .faq-a{max-height:400px}
.faq-a p{padding:0 24px 20px;color:var(--text-light);line-height:1.7;font-size:.92rem}

/* 关于我们 */
.about-inner{display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:center}
.about-content .section-tag{margin-bottom:16px}
.about-content h2{font-size:2rem;margin-bottom:20px}
.about-content > p{color:var(--text-light);line-height:1.7;margin-bottom:16px}
.about-note{background:#fff7ed;border-radius:var(--radius);padding:16px 20px;font-size:.9rem;color:#9a3412;margin:20px 0}
.about-services{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}
.service-item{display:flex;align-items:center;gap:10px;font-size:.92rem}
.dot{width:8px;height:8px;border-radius:50%;background:var(--primary);flex-shrink:0}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.stat-card{
  background:linear-gradient(135deg,var(--primary-light),#fff);
  border:1px solid var(--primary-light);border-radius:var(--radius);
  padding:32px;text-align:center;
}
.stat-card h3{font-size:2.5rem;font-weight:700;color:var(--primary);margin-bottom:8px}
.stat-card p{color:var(--text-light);font-size:.92rem}

/* 联系我们 */
.contact{background:var(--bg-soft)}
.contact-inner{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:flex-start}
.contact-info .section-tag{margin-bottom:16px}
.contact-info h2{font-size:2rem;margin-bottom:16px}
.contact-info > p{color:var(--text-light);line-height:1.7;margin-bottom:32px}
.contact-methods{display:flex;flex-direction:column;gap:20px}
.contact-method{display:flex;gap:16px;align-items:flex-start}
.contact-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;flex-shrink:0}
.contact-icon.purple{background:var(--primary-light)}
.contact-method h4{font-size:1rem;margin-bottom:4px}
.contact-link{color:var(--primary);font-weight:600;font-size:1.1rem}
.contact-method p{color:var(--text-light);font-size:.88rem}
.contact-form{
  background:#fff;border-radius:var(--radius-lg);
  padding:36px;border:1px solid var(--border-light);box-shadow:var(--shadow);
}
.contact-form h3{font-size:1.3rem;margin-bottom:8px}
.form-note{color:var(--text-lighter);font-size:.85rem;margin-bottom:24px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:.88rem;font-weight:500;margin-bottom:6px}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:10px;
  font-family:inherit;font-size:.92rem;transition:all .2s;background:var(--bg-soft);
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{
  outline:none;border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(124,58,237,.1);
}
.form-group textarea{height:100px;resize:vertical}

/* 文章详情 */
.article-page{padding:60px 0 80px}
.article-container{max-width:800px;margin:0 auto}
.breadcrumb{margin-bottom:24px;font-size:.9rem;color:var(--text-lighter)}
.breadcrumb a{color:var(--text-light)}
.breadcrumb a:hover{color:var(--primary)}
.article-title{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700;line-height:1.3;margin-bottom:20px}
.article-meta{display:flex;gap:24px;flex-wrap:wrap;font-size:.88rem;color:var(--text-lighter);margin-bottom:20px;padding-bottom:20px;border-bottom:1px solid var(--border-light)}
.article-meta a{color:var(--primary)}
.article-summary{
  font-size:1.05rem;color:var(--text-light);line-height:1.8;
  padding:20px 24px;background:var(--bg-soft);border-left:4px solid var(--primary);
  border-radius:0 var(--radius) var(--radius) 0;margin-bottom:24px;
}
.article-cover-wrap{border-radius:var(--radius);overflow:hidden;margin-bottom:32px;box-shadow:var(--shadow)}
.article-cover-img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-content{line-height:1.9;font-size:1rem}
.article-content h2{font-size:1.5rem;font-weight:700;margin:40px 0 16px}
.article-content h3{font-size:1.25rem;font-weight:600;margin:32px 0 12px}
.article-content p{margin-bottom:16px;color:var(--text)}
.article-content img{border-radius:var(--radius);margin:20px 0;max-width:100%;height:auto}
.article-content ul,.article-content ol{margin:16px 0;padding-left:24px}
.article-content ul li{list-style:disc;margin-bottom:8px}
.article-content ol li{list-style:decimal;margin-bottom:8px}
.article-content blockquote{
  border-left:4px solid var(--primary);padding:16px 24px;
  background:var(--primary-light);border-radius:0 var(--radius) var(--radius) 0;
  margin:20px 0;color:var(--primary-dark);
}
.article-content a{color:var(--primary);border-bottom:1px solid var(--primary-light)}
.article-actions{display:flex;gap:12px;flex-wrap:wrap;margin:40px 0;padding:32px 0;border-top:1px solid var(--border-light);border-bottom:1px solid var(--border-light)}
.article-relate{margin:40px 0}
.article-relate h3{font-size:1.3rem;margin-bottom:20px}
.relate-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.relate-card{
  background:var(--bg-soft);border-radius:var(--radius);padding:20px;
  border:1px solid var(--border-light);transition:all .2s;
}
.relate-card:hover{border-color:var(--primary-light);background:#fff;box-shadow:var(--shadow-sm)}
.relate-card h4{font-size:1rem;margin-bottom:6px}
.relate-card p{font-size:.85rem;color:var(--text-light)}
.article-cta{
  background:linear-gradient(135deg,var(--primary),#a855f7);
  border-radius:var(--radius-lg);padding:40px;text-align:center;color:#fff;
}
.article-cta h3{font-size:1.5rem;margin-bottom:12px}
.article-cta p{opacity:.9;margin-bottom:24px}
.cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.article-cta .btn-primary{background:#fff;color:var(--primary)}
.article-cta .btn-primary:hover{background:#f5f3ff}
.article-cta .btn-outline{border-color:#fff;color:#fff}
.article-cta .btn-outline:hover{background:#fff;color:var(--primary)}

/* Footer */
.site-footer{background:#1f2937;color:#d1d5db;padding-top:0}
.footer-cta{
  background:linear-gradient(135deg,#312e81,#4c1d95);
  border-radius:var(--radius-lg);padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:30px;
  margin-bottom:60px;flex-wrap:wrap;
  transform:translateY(-40px);box-shadow:var(--shadow-lg);
}
.footer-cta-content h3{font-size:1.5rem;color:#fff;margin-bottom:8px}
.footer-cta-content p{color:#c4b5fd}
.footer-cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.footer-cta .btn-outline{border-color:#c4b5fd;color:#c4b5fd}
.footer-cta .btn-outline:hover{background:#c4b5fd;color:var(--primary-dark)}
.footer-main{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid #374151}
.logo-footer{color:#fff;margin-bottom:16px}
.logo-footer .logo-mark{background:linear-gradient(135deg,var(--primary),#a855f7)}
.footer-desc{color:#9ca3af;line-height:1.7;margin-bottom:20px;font-size:.9rem}
.footer-contact-item{font-size:.9rem;color:#9ca3af}
.footer-contact-item a{color:#c4b5fd}
.footer-col h4{color:#fff;font-size:1rem;margin-bottom:20px;font-weight:600}
.footer-col a{display:block;color:#9ca3af;font-size:.9rem;padding:6px 0;transition:color .2s}
.footer-col a:hover{color:#c4b5fd}
.footer-friend-links{padding:32px 0;border-bottom:1px solid #374151}
.footer-friend-links h4{color:#fff;font-size:1rem;margin-bottom:16px}
.friend-links-list{display:flex;flex-wrap:wrap;gap:16px}
.friend-links-list a{color:#9ca3af;font-size:.88rem;transition:color .2s}
.friend-links-list a:hover{color:#c4b5fd}
.footer-bottom{padding:24px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}
.footer-copy p{font-size:.85rem;color:#6b7280;margin-bottom:4px}
.footer-disclaimer{font-size:.8rem!important;color:#4b5563!important}
.footer-beian{display:flex;gap:20px}
.footer-beian a{font-size:.85rem;color:#9ca3af}
.footer-beian a:hover{color:#c4b5fd}

/* Modal */
.modal-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.5);
  z-index:200;display:none;align-items:center;justify-content:center;
  padding:20px;backdrop-filter:blur(4px);
}
.modal-overlay.active{display:flex;animation:fadeIn .2s}
.modal{
  background:#fff;border-radius:var(--radius-lg);
  padding:40px;max-width:440px;width:100%;position:relative;
  box-shadow:var(--shadow-lg);
}
.modal-close{
  position:absolute;top:16px;right:16px;
  width:32px;height:32px;border-radius:50%;
  background:var(--bg-soft);display:flex;align-items:center;justify-content:center;
  font-size:1.2rem;color:var(--text-light);transition:all .2s;
}
.modal-close:hover{background:var(--border);color:var(--text)}
.modal h3{font-size:1.4rem;margin-bottom:12px}
.modal-desc{color:var(--text-light);margin-bottom:20px;line-height:1.6}
.modal-note{
  background:var(--primary-light);border-radius:var(--radius);
  padding:16px;margin-bottom:24px;
}
.modal-note p{font-size:.88rem;color:var(--primary-dark);line-height:1.6}

/* Toast */
.toast{
  position:fixed;bottom:40px;left:50%;transform:translateX(-50%) translateY(100px);
  background:var(--text);color:#fff;padding:14px 28px;border-radius:12px;
  font-size:.92rem;z-index:300;opacity:0;transition:all .3s;
  box-shadow:0 10px 40px rgba(0,0,0,.2);
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* 响应式 */
@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-visual{max-width:500px;margin:0 auto}
  .card-1{left:0}
  .card-2{right:0}
  .about-inner,.contact-inner{grid-template-columns:1fr;gap:40px}
  .about-stats{grid-template-columns:repeat(4,1fr)}
  .footer-main{grid-template-columns:1fr 1fr;gap:30px}
}
@media(max-width:768px){
  .main-nav{
    position:fixed;top:65px;left:0;right:0;
    background:#fff;padding:20px;flex-direction:column;gap:0;
    box-shadow:var(--shadow);clip-path:inset(0 0 -100% 0);
    transform:translateY(-120%);transition:transform .3s;
    max-height:calc(100vh - 65px);overflow-y:auto;
  }
  .main-nav.active{transform:translateY(0)}
  .main-nav a{padding:14px 0;border-bottom:1px solid var(--border-light);width:100%}
  .header-actions .btn{display:none}
  .menu-toggle{display:flex}
  .nav-cta-mobile{display:flex}
  .hero{padding:50px 0 60px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .hero-float-card{display:none}
  section{padding:50px 0}
  .platforms-grid,.features-grid,.download-grid,.safety-grid{grid-template-columns:1fr}
  .device-tabs{justify-content:flex-start;overflow-x:auto;flex-wrap:nowrap;padding:6px}
  .device-tab{padding:10px 16px;font-size:.88rem;white-space:nowrap}
  .guide-steps{flex-direction:column;align-items:center;gap:0}
  .step-line{width:2px;height:30px;margin:0;flex:none}
  .form-row{grid-template-columns:1fr}
  .about-services{grid-template-columns:1fr}
  .about-stats{grid-template-columns:1fr 1fr}
  .footer-main{grid-template-columns:1fr}
  .footer-cta{flex-direction:column;text-align:center;padding:30px 24px}
  .footer-cta-actions{justify-content:center;width:100%}
  .footer-cta-actions .btn{flex:1}
  .footer-bottom{flex-direction:column;text-align:center}
  .safety-card,.web-guide{padding:24px}
  .contact-form{padding:24px}
  .modal{padding:30px 24px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
}