*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#f0f2f5;--card-bg:rgba(255,255,255,0.85);--text:#1a1a2e;--primary:#6c63ff;--secondary:#ff6584;--accent:#43e97b;--shadow:0 8px 32px rgba(0,0,0,0.12);--radius:20px;--transition:0.4s cubic-bezier(0.25,0.46,0.45,0.94)}
[data-theme=dark]{--bg:#0f0f1a;--card-bg:rgba(30,30,50,0.9);--text:#e0e0f0;--shadow:0 8px 32px rgba(0,0,0,0.6)}
body{font-family:'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--text);line-height:1.7;transition:background var(--transition),color var(--transition)}
a{color:var(--primary);text-decoration:none}
img,svg{max-width:100%;height:auto;display:block}
.container{max-width:1280px;margin:0 auto;padding:0 24px}
.glass{background:var(--card-bg);backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,0.18);border-radius:var(--radius);box-shadow:var(--shadow)}
.btn{display:inline-block;padding:12px 32px;border-radius:50px;font-weight:600;cursor:pointer;transition:all var(--transition);border:none;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;box-shadow:0 4px 15px rgba(108,99,255,0.4)}
.btn:hover{transform:translateY(-3px);box-shadow:0 8px 30px rgba(108,99,255,0.6)}
.section{padding:80px 0}
.section-title{font-size:2.4rem;font-weight:700;margin-bottom:16px;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;text-align:center}
.section-sub{text-align:center;font-size:1.1rem;margin-bottom:48px;opacity:0.8}
.grid{display:grid;gap:32px}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid-4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.card{padding:32px;border-radius:var(--radius);background:var(--card-bg);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,0.1);box-shadow:var(--shadow);transition:all var(--transition)}
.card:hover{transform:translateY(-8px);box-shadow:0 16px 48px rgba(0,0,0,0.15)}
.icon{width:56px;height:56px;margin-bottom:16px;border-radius:16px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary),var(--secondary))}
.icon svg{width:32px;height:32px;fill:#fff}
.text-center{text-align:center}
.mt-16{margin-top:16px}
.mb-16{margin-bottom:16px}
header{position:fixed;top:0;left:0;right:0;z-index:1000;background:var(--card-bg);backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,0.08);padding:0 24px;transition:background var(--transition)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px;max-width:1280px;margin:0 auto}
.logo{font-size:1.6rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.nav{display:flex;gap:24px;align-items:center}
.nav a{font-weight:500;padding:8px 0;position:relative;transition:color var(--transition)}
.nav a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--primary);transition:width var(--transition)}
.nav a:hover::after{width:100%}
.menu-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:8px}
.menu-toggle span{width:28px;height:3px;background:var(--text);border-radius:2px;transition:all var(--transition)}
.dark-toggle{background:none;border:1px solid var(--text);border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.2rem;transition:all var(--transition)}
.dark-toggle:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.banner{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding-top:70px;background:linear-gradient(135deg,#1a1a2e 0%,#16213e 50%,#0f3460 100%);position:relative;overflow:hidden}
.banner::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 30% 50%,rgba(108,99,255,0.15),transparent 60%),radial-gradient(circle at 70% 80%,rgba(255,101,132,0.1),transparent 50%);animation:bgMove 20s ease infinite}
@keyframes bgMove{0%,100%{transform:translate(0,0)}50%{transform:translate(5%,5%)}}
.banner-content{position:relative;z-index:2;max-width:800px;padding:0 24px}
.banner h1{font-size:3.6rem;font-weight:800;color:#fff;margin-bottom:16px;text-shadow:0 4px 30px rgba(0,0,0,0.3)}
.banner p{font-size:1.3rem;color:rgba(255,255,255,0.85);margin-bottom:32px}
.banner .btn{font-size:1.1rem;padding:16px 48px}
.banner-carousel{position:absolute;bottom:40px;left:50%;transform:translateX(-50%);display:flex;gap:12px;z-index:3}
.carousel-dot{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,0.3);cursor:pointer;transition:all var(--transition)}
.carousel-dot.active{background:#fff;transform:scale(1.3)}
.stats{display:flex;justify-content:center;gap:48px;flex-wrap:wrap;padding:40px 0}
.stat-item{text-align:center}
.stat-number{font-size:3rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.stat-label{font-size:1rem;opacity:0.7;margin-top:4px}
.faq-item{border-bottom:1px solid rgba(255,255,255,0.1);padding:16px 0;cursor:pointer}
.faq-question{font-weight:600;font-size:1.1rem;display:flex;justify-content:space-between;align-items:center}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.5s ease, padding 0.3s;padding-top:0}
.faq-item.active .faq-answer{max-height:500px;padding-top:16px}
.faq-question .arrow{transition:transform 0.3s}
.faq-item.active .arrow{transform:rotate(180deg)}
.howto-step{display:flex;gap:16px;margin-bottom:24px;align-items:flex-start}
.howto-step-num{width:40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}
.news-card .date{font-size:0.85rem;opacity:0.6;margin-bottom:8px}
.news-card h3{font-size:1.2rem;margin-bottom:8px}
.news-card p{opacity:0.8;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
footer{background:var(--card-bg);backdrop-filter:blur(16px);border-top:1px solid rgba(255,255,255,0.08);padding:48px 24px 24px;margin-top:80px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:32px;max-width:1280px;margin:0 auto}
.footer-col h4{font-size:1.1rem;margin-bottom:16px;position:relative;padding-bottom:8px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:40px;height:2px;background:var(--primary)}
.footer-col a,.footer-col p{display:block;font-size:0.95rem;opacity:0.8;margin-bottom:8px;transition:opacity var(--transition)}
.footer-col a:hover{opacity:1}
.footer-bottom{text-align:center;padding-top:24px;margin-top:24px;border-top:1px solid rgba(255,255,255,0.08);font-size:0.9rem;opacity:0.7;max-width:1280px;margin-left:auto;margin-right:auto}
.qr-code{width:120px;height:120px;border-radius:12px;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;margin:8px auto;color:#fff;font-size:0.8rem;text-align:center;padding:8px}
.back-to-top{position:fixed;bottom:40px;right:40px;width:48px;height:48px;border-radius:50%;background:var(--primary);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.4rem;box-shadow:0 4px 20px rgba(108,99,255,0.5);opacity:0;transform:translateY(20px);transition:all var(--transition);z-index:999}
.back-to-top.visible{opacity:1;transform:translateY(0)}
.back-to-top:hover{transform:translateY(-4px)}
@media(max-width:768px){.nav{position:fixed;top:70px;left:0;right:0;background:var(--card-bg);backdrop-filter:blur(20px);flex-direction:column;padding:24px;gap:16px;transform:translateY(-120%);transition:transform var(--transition);border-bottom:1px solid rgba(255,255,255,0.08)}.nav.open{transform:translateY(0)}.menu-toggle{display:flex}.banner h1{font-size:2.4rem}.banner p{font-size:1rem}.section-title{font-size:1.8rem}.stats{gap:24px}.stat-number{font-size:2.2rem}}
.search-box{display:flex;gap:8px;margin-top:16px}
.search-box input{flex:1;padding:12px 20px;border-radius:50px;border:1px solid rgba(255,255,255,0.2);background:rgba(255,255,255,0.1);color:#fff;font-size:1rem;outline:none}
.search-box input::placeholder{color:rgba(255,255,255,0.5)}
.search-box button{padding:12px 24px;border-radius:50px;border:none;background:var(--primary);color:#fff;cursor:pointer;font-weight:600}