/* ========== 盈立证券 - 科技蓝亮色主题 ========== */
:root {
    --primary: #1a56db;
    --primary-dark: #1340a8;
    --primary-light: #3b82f6;
    --accent: #3b82f6;
    --accent-light: #60a5fa;
    --bg-deep: #f3f6fc;
    --bg-dark: #f7f9fd;
    --bg-card: #ffffff;
    --bg-card-hover: #ffffff;
    --border: #dce3f2;
    --text-primary: #1a2840;
    --text-secondary: #5c6d84;
    --text-muted: #8d9cb3;
    --gradient-hero: linear-gradient(135deg, #edf1fb 0%, #f5f8fe 50%, #f0f4fc 100%);
    --gradient-card: linear-gradient(180deg, #ffffff 0%, #f8fafd 100%);
    --gradient-accent: linear-gradient(135deg, #1a56db 0%, #3b82f6 50%, #60a5fa 100%);
    --gradient-btn: linear-gradient(135deg, #1a56db 0%, #3b82f6 100%);
    --shadow-card: 0 4px 24px rgba(26,86,219,.06);
    --radius-sm: 8px;--radius-md: 12px;--radius-lg: 20px;--radius-xl: 28px;
    --font-sans: 'PingFang SC','Microsoft YaHei','Helvetica Neue',sans-serif;
    --font-mono: 'SF Mono','Consolas',monospace;
    --transition: all .3s cubic-bezier(.4,0,.2,1);
}
*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}
body{font-family:var(--font-sans);background:var(--bg-deep);color:var(--text-primary);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased}
.data-stream{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0;overflow:hidden}
.data-line{position:absolute;width:1px;background:linear-gradient(180deg,transparent,rgba(26,86,219,.06),transparent);animation:dataFlow linear infinite}
@keyframes dataFlow{0%{transform:translateY(-100%);opacity:0}10%{opacity:1}90%{opacity:1}100%{transform:translateY(100vh);opacity:0}}
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;padding:0 40px;height:70px;display:flex;align-items:center;justify-content:space-between;transition:var(--transition);background:rgba(255,255,255,.88)}
.nav.scrolled{background:rgba(255,255,255,.95);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);box-shadow:0 4px 30px rgba(0,0,0,.05)}
.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.nav-logo-icon{width:38px;height:38px;background:var(--gradient-accent);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:900;color:#fff}
.nav-logo-text{font-size:18px;font-weight:700;color:var(--text-primary);letter-spacing:1px}
.nav-logo-text span{color:var(--accent)}
.nav-cta{padding:10px 24px;background:var(--gradient-btn);border:none;border-radius:50px;color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:var(--transition);letter-spacing:.5px}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(26,86,219,.35)}
.hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:120px 40px 80px;overflow:hidden}
.hero::before{content:'';position:absolute;top:50%;left:50%;width:800px;height:800px;background:radial-gradient(circle,rgba(26,86,219,.03) 0%,transparent 70%);transform:translate(-50%,-50%)}
.hero-content{position:relative;z-index:1;max-width:800px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 18px;background:rgba(26,86,219,.08);border:1px solid rgba(26,86,219,.15);border-radius:50px;font-size:13px;color:var(--primary-light);margin-bottom:28px;letter-spacing:2px}
.hero-badge::before{content:'';width:8px;height:8px;background:var(--accent);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(26,86,219,.3)}50%{box-shadow:0 0 0 12px rgba(26,86,219,0)}}
.hero h1{font-size:clamp(36px,5vw,52px);font-weight:800;line-height:1.25;margin-bottom:20px;letter-spacing:1px}
.hero h1 .highlight{background:var(--gradient-accent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:17px;color:var(--text-secondary);margin-bottom:40px;line-height:1.8}
.hero-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-primary{padding:14px 40px;background:var(--gradient-btn);border:none;border-radius:50px;color:#fff;font-size:16px;font-weight:600;cursor:pointer;transition:var(--transition);text-decoration:none;display:inline-flex;align-items:center;gap:8px;letter-spacing:.5px}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 35px rgba(26,86,219,.35)}
.btn-outline{padding:14px 40px;background:transparent;border:1.5px solid var(--border);border-radius:50px;color:var(--text-primary);font-size:16px;font-weight:600;cursor:pointer;transition:var(--transition);text-decoration:none}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);background:rgba(26,86,219,.04)}
.hero-stats{display:flex;gap:48px;justify-content:center;margin-top:56px;flex-wrap:wrap}
.hero-stat{text-align:center}.hero-stat-num{font-size:36px;font-weight:800;color:var(--accent);font-family:var(--font-mono)}.hero-stat-label{font-size:13px;color:var(--text-muted);margin-top:4px}
.section{padding:100px 40px;position:relative;z-index:1}.section-header{text-align:center;margin-bottom:60px}.section-label{font-size:13px;color:var(--accent);letter-spacing:3px;text-transform:uppercase;margin-bottom:12px}.section-title{font-size:36px;font-weight:700;margin-bottom:14px}.section-sub{font-size:16px;color:var(--text-secondary);max-width:600px;margin:0 auto}.container{max-width:1200px;margin:0 auto}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--gradient-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 28px;transition:var(--transition);position:relative;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.02)}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient-accent);transform:scaleX(0);transition:transform .4s ease}
.feature-card:hover::before{transform:scaleX(1)}
.feature-card:hover{border-color:rgba(26,86,219,.2);transform:translateY(-4px);box-shadow:0 8px 36px rgba(26,86,219,.06)}
.feature-icon{width:52px;height:52px;background:rgba(26,86,219,.06);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:20px}
.feature-card h3{font-size:18px;font-weight:600;margin-bottom:10px}.feature-card p{font-size:14px;color:var(--text-secondary);line-height:1.7}
.download-section{background:var(--bg-dark)}
.download-card{background:var(--gradient-card);border:1px solid var(--border);border-radius:var(--radius-xl);padding:48px;display:flex;align-items:center;gap:48px;position:relative;overflow:hidden;box-shadow:0 2px 16px rgba(0,0,0,.02)}
.download-card::after{content:'';position:absolute;top:-50%;right:-10%;width:400px;height:400px;background:radial-gradient(circle,rgba(26,86,219,.03) 0%,transparent 70%)}
.download-info{flex:1;position:relative;z-index:1}.download-info h3{font-size:28px;margin-bottom:12px}.download-info p{color:var(--text-secondary);margin-bottom:24px}
.download-meta{display:flex;gap:24px;margin-bottom:28px;flex-wrap:wrap}.download-meta-item{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted)}.download-meta-item span{color:var(--text-secondary);font-weight:600}
.download-qrcode{width:160px;height:160px;background:#fff;border-radius:var(--radius-lg);padding:8px;border:1px solid var(--border);position:relative;z-index:1;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.download-qrcode canvas{width:100%;height:100%}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--gradient-card);border:1px solid var(--border);border-radius:var(--radius-md);margin-bottom:12px;overflow:hidden;transition:var(--transition)}
.faq-item.active{border-color:rgba(26,86,219,.25)}
.faq-question{padding:20px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:15px;user-select:none}
.faq-arrow{transition:transform .3s ease;color:var(--text-muted);font-size:18px}.faq-item.active .faq-arrow{transform:rotate(180deg);color:var(--accent)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s ease;padding:0 24px;color:var(--text-secondary);font-size:14px;line-height:1.8}
.faq-item.active .faq-answer{max-height:300px;padding:0 24px 20px}
.footer{background:#fff;border-top:1px solid var(--border);padding:40px;text-align:center;position:relative;z-index:1}
.footer p{font-size:13px;color:var(--text-muted)}.footer a{color:var(--text-secondary);text-decoration:none}.footer a:hover{color:var(--accent)}
.notfound{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:40px;background:#fff}
.notfound-code{font-size:140px;font-weight:900;background:var(--gradient-accent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1;margin-bottom:12px}
.notfound h2{font-size:24px;margin-bottom:12px}.notfound p{color:var(--text-secondary);margin-bottom:32px}.notfound .btn-primary{display:inline-flex;text-decoration:none}
@media(max-width:1024px){.features-grid{grid-template-columns:repeat(2,1fr)}.download-card{flex-direction:column;text-align:center}}
@media(max-width:768px){.hero h1{font-size:32px}.hero-stats{gap:24px}.section{padding:60px 20px}.features-grid{grid-template-columns:1fr}.section-title{font-size:26px}.download-card{padding:28px}.nav{padding:0 20px}}