/* ===== im冷钱包 网站A — 深空蓝极光紫科技风格 ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg-deep:#0a0e1a;--bg-card:rgba(15,20,40,0.65);
  --blue:#3b82f6;--purple:#8b5cf6;--cyan:#06b6d4;--green:#10b981;--red:#ef4444;
  --text:#e2e8f0;--text-dim:#94a3b8;--border:rgba(99,102,241,0.25);
  --grad:linear-gradient(135deg,#3b82f6,#8b5cf6);
}
html{scroll-behavior:smooth}
body{font-family:'PingFang SC','Helvetica Neue',Arial,sans-serif;background:var(--bg-deep);color:var(--text);line-height:1.7;overflow-x:hidden}

/* 粒子网格背景 */
body::before{content:'';position:fixed;inset:0;background:
  linear-gradient(rgba(59,130,246,.04) 1px,transparent 1px),
  linear-gradient(90deg,rgba(59,130,246,.04) 1px,transparent 1px);
  background-size:60px 60px;z-index:0;pointer-events:none;animation:gridMove 20s linear infinite}
@keyframes gridMove{to{background-position:60px 60px}}

/* 浮动粒子 */
body::after{content:'';position:fixed;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(139,92,246,.12),transparent 70%);
  top:20%;left:60%;z-index:0;animation:floatOrb 15s ease-in-out infinite;pointer-events:none}
@keyframes floatOrb{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(-80px,60px) scale(1.3)}}

.container{max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(10,14,26,.88);backdrop-filter:blur(18px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text)}
.logo-icon{width:36px;height:36px;border-radius:10px;background:var(--grad);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;color:#fff}
.logo-text{font-size:18px;font-weight:700}
.main-nav{display:flex;gap:6px}
.main-nav a{color:var(--text-dim);text-decoration:none;padding:8px 14px;border-radius:8px;font-size:14px;transition:.25s}
.main-nav a:hover,.main-nav a.active{color:#fff;background:rgba(99,102,241,.15)}
.nav-toggle{display:none;background:none;border:none;color:var(--text);font-size:24px;cursor:pointer}

/* 搜索栏 */
.search-bar{background:rgba(15,20,40,.5);padding:12px 0;border-bottom:1px solid var(--border)}
.search-wrapper{display:flex;gap:8px;max-width:560px}
.search-wrapper input{flex:1;background:rgba(30,40,70,.6);border:1px solid var(--border);border-radius:8px;padding:10px 16px;color:var(--text);font-size:14px;outline:none}
.search-wrapper input:focus{border-color:var(--blue)}
.search-wrapper button{background:var(--grad);color:#fff;border:none;padding:10px 22px;border-radius:8px;cursor:pointer;font-size:14px;font-weight:600}
.search-status{margin-top:6px;font-size:13px;color:var(--cyan);display:none}
.search-status.active{display:block}

/* 面包屑 */
.breadcrumb{padding:14px 0;font-size:13px;color:var(--text-dim)}
.breadcrumb a{color:var(--blue);text-decoration:none}
.breadcrumb span{margin:0 6px}

/* Hero */
.hero{padding:70px 0 50px;text-align:center;position:relative}
.hero h1{font-size:clamp(28px,5vw,48px);font-weight:800;margin-bottom:16px;background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero .subtitle{font-size:clamp(15px,2.5vw,19px);color:var(--text-dim);max-width:720px;margin:0 auto 28px}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-primary{background:var(--grad);color:#fff;padding:13px 32px;border-radius:10px;text-decoration:none;font-weight:700;font-size:15px;transition:.3s;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(99,102,241,.35)}
.btn-secondary{background:transparent;color:var(--blue);padding:13px 32px;border-radius:10px;text-decoration:none;font-weight:700;font-size:15px;border:1.5px solid var(--blue);transition:.3s}
.btn-secondary:hover{background:rgba(59,130,246,.1)}

/* 磨砂玻璃卡片 */
.glass-card{background:var(--bg-card);backdrop-filter:blur(12px);border:1px solid var(--border);border-radius:16px;padding:28px;transition:.3s}
.glass-card:hover{border-color:rgba(139,92,246,.4);transform:translateY(-3px)}

/* 仪表盘 */
.dashboard{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px;margin:30px 0}
.stat-card{text-align:center;padding:24px 16px}
.stat-value{font-size:28px;font-weight:800;background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.75}}
.stat-label{font-size:13px;color:var(--text-dim);margin-top:6px}
.stat-change{font-size:12px;margin-top:4px}
.stat-change.up{color:var(--green)}
.stat-change.down{color:var(--red)}

/* 区块标题 */
.section-title{text-align:center;margin-bottom:36px}
.section-title h2{font-size:clamp(22px,3.5vw,32px);font-weight:800;margin-bottom:8px}
.section-title h5{color:var(--text-dim);font-weight:400;font-size:15px}

section{padding:50px 0}

/* 卡片网格 */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px}
.card-grid .glass-card h4{font-size:17px;margin-bottom:10px;color:#fff}
.card-grid .glass-card p{font-size:14px;color:var(--text-dim);line-height:1.7}

/* 视频卡片 */
.video-card{position:relative;overflow:hidden;border-radius:16px;cursor:pointer}
.video-card img{width:100%;display:block;border-radius:16px}
.video-play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.45);opacity:0;transition:.35s}
.video-card:hover .video-play{opacity:1}
.play-btn{width:60px;height:60px;border-radius:50%;background:var(--grad);display:flex;align-items:center;justify-content:center}
.play-btn::after{content:'';border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:4px}

/* 页面内容 */
.page-content h2{font-size:clamp(22px,3.5vw,30px);font-weight:800;margin-bottom:20px}
.page-content h4{font-size:18px;font-weight:700;margin:28px 0 12px;color:var(--cyan)}
.page-content h5{font-size:16px;font-weight:600;margin:20px 0 8px;color:var(--blue)}
.page-content p{margin-bottom:16px;color:var(--text-dim);line-height:1.8;font-size:15px}
.page-content img{width:100%;max-width:680px;border-radius:12px;margin:20px auto;display:block}

/* SVG图表 */
.encryption-diagram{margin:30px 0;padding:20px;background:rgba(15,20,40,.5);border-radius:16px;border:1px solid var(--border)}
.encryption-diagram svg{width:100%;max-width:700px;margin:0 auto;display:block}
.flow-line{stroke-dasharray:8 4;animation:flowDash 1.5s linear infinite}
@keyframes flowDash{to{stroke-dashoffset:-24}}

/* 交互步骤条 */
.step-bar{display:flex;gap:4px;margin:30px 0 20px;overflow-x:auto;padding-bottom:8px}
.step-item{padding:12px 20px;background:var(--bg-card);border:1px solid var(--border);border-radius:10px;cursor:pointer;white-space:nowrap;font-size:14px;font-weight:600;color:var(--text-dim);transition:.3s;flex-shrink:0}
.step-item.active,.step-item:hover{background:var(--grad);color:#fff;border-color:transparent}
.step-content{display:none}
.step-content.active{display:block;animation:fadeUp .4s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

/* 专家与用户口碑 */
.expert-grid,.review-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;margin:20px 0}
.expert-card,.review-card{padding:22px}
.expert-card .name{font-weight:700;font-size:15px;color:#fff}
.expert-card .title{font-size:13px;color:var(--purple);margin:4px 0 10px}
.review-card .stars{color:#f59e0b;margin-bottom:8px;font-size:16px}
.review-card .user{font-size:13px;color:var(--text-dim);margin-top:10px}

/* 分享按钮 */
.share-row{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}
.share-btn{padding:8px 18px;border-radius:8px;font-size:13px;font-weight:600;border:none;cursor:pointer;color:#fff;transition:.3s}
.share-btn.wechat{background:#07c160}.share-btn.weibo{background:#e6162d}
.share-btn.douyin{background:#111;border:1px solid #444}.share-btn.bilibili{background:#fb7299}

/* Footer */
.site-footer{background:rgba(5,8,18,.9);border-top:1px solid var(--border);padding:50px 0 24px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.footer-brand p{color:var(--text-dim);font-size:13px;margin-top:12px;line-height:1.7}
.footer-col h6{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--blue)}
.footer-col a{display:block;color:var(--text-dim);text-decoration:none;font-size:13px;margin-bottom:8px;transition:.2s}
.footer-col a:hover{color:var(--text)}
.footer-bottom{border-top:1px solid var(--border);padding-top:18px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12px;color:var(--text-dim)}

/* 响应式 */
@media(max-width:768px){
  .main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:rgba(10,14,26,.96);flex-direction:column;padding:16px;border-bottom:1px solid var(--border)}
  .main-nav.open{display:flex}
  .nav-toggle{display:block}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero{padding:50px 0 30px}
  .dashboard{grid-template-columns:1fr 1fr}
  .card-grid{grid-template-columns:1fr}
  .step-bar{flex-wrap:nowrap}
}
@media(max-width:480px){
  .footer-grid{grid-template-columns:1fr}
  .dashboard{grid-template-columns:1fr}
  .hero-btns{flex-direction:column;align-items:center}
}