*{margin:0;padding:0;box-sizing:border-box;font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif}
body{background:linear-gradient(135deg,#f0f4ff 0%,#fce4ec 100%);color:#2c3e50;line-height:1.8;font-size:16px;min-height:100vh}
a{color:#e63946;text-decoration:none;transition:color .3s,transform .3s}
a:hover{color:#c1121f;transform:scale(1.02)}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.navbar{position:fixed;top:0;left:0;width:100%;background:rgba(255,255,255,0.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:0 2px 20px rgba(0,0,0,0.08);z-index:1000;transition:all .3s}
.navbar .container{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{font-size:24px;font-weight:bold;color:#e63946;display:flex;align-items:center;gap:8px;transition:transform .3s}
.logo:hover{transform:scale(1.05)}
.logo svg{width:36px;height:36px;border-radius:8px;transition:box-shadow .3s}
.logo:hover svg{box-shadow:0 0 20px rgba(230,57,70,0.4)}
.nav-menu{display:flex;list-style:none;gap:20px;align-items:center}
.nav-menu li a{padding:8px 14px;border-radius:8px;font-size:15px;color:#2c3e50;position:relative;transition:all .3s}
.nav-menu li a::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:2px;background:#e63946;transition:width .3s}
.nav-menu li a:hover::after{width:70%}
.nav-menu li a:hover{background:rgba(230,57,70,0.1);color:#e63946}
.search-box{display:flex;gap:6px}
.search-box input{padding:8px 14px;border:2px solid #ddd;border-radius:8px;font-size:14px;width:180px;outline:none;transition:border-color .3s,box-shadow .3s;background:rgba(255,255,255,0.7);backdrop-filter:blur(5px)}
.search-box input:focus{border-color:#e63946;box-shadow:0 0 12px rgba(230,57,70,0.2)}
.search-box button{background:linear-gradient(135deg,#e63946,#c1121f);color:#fff;border:none;padding:8px 18px;border-radius:8px;cursor:pointer;font-size:14px;transition:transform .3s,box-shadow .3s}
.search-box button:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(230,57,70,0.4)}
.mobile-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;background:none;border:none}
.mobile-toggle span{width:28px;height:3px;background:#2c3e50;border-radius:3px;transition:all .3s}
.breadcrumb{background:transparent;padding:90px 0 10px;font-size:14px;color:#666}
.breadcrumb a{color:#e63946;transition:color .3s}
.breadcrumb a:hover{color:#c1121f}
.banner{position:relative;overflow:hidden;border-radius:20px;margin:10px 0 30px;background:linear-gradient(135deg,#1a1a2e 0%,#16213e 50%,#0f3460 100%);min-height:400px;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 40px rgba(0,0,0,0.2)}
.banner::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 30% 50%,rgba(230,57,70,0.15),transparent 60%);animation:bannerGlow 8s ease-in-out infinite;pointer-events:none}
@keyframes bannerGlow{0%,100%{transform:translate(0,0)}50%{transform:translate(10%,10%)}}
.banner-slide{position:absolute;width:100%;height:100%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .8s,transform .8s;padding:40px;text-align:center;color:#fff;transform:scale(0.95)}
.banner-slide.active{opacity:1;transform:scale(1)}
.banner-slide h2{font-size:40px;margin-bottom:16px;text-shadow:0 2px 8px rgba(0,0,0,0.3);background:linear-gradient(90deg,#fff,#ffd6d6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.banner-slide p{font-size:20px;max-width:700px;margin:0 auto;color:rgba(255,255,255,0.85)}
.banner-dots{position:absolute;bottom:20px;display:flex;gap:10px}
.banner-dots span{width:12px;height:12px;background:rgba(255,255,255,0.5);border-radius:50%;cursor:pointer;transition:all .3s}
.banner-dots span.active{background:#e63946;transform:scale(1.3);box-shadow:0 0 12px rgba(230,57,70,0.6)}
section{padding:50px 0}
.section-title{text-align:center;font-size:32px;margin-bottom:40px;color:#1a1a2e;position:relative}
.section-title:after{content:"";display:block;width:60px;height:4px;background:linear-gradient(90deg,#e63946,#ff6b6b);margin:12px auto 0;border-radius:2px}
h1{font-size:36px;text-align:center;padding:20px 0;color:#1a1a2e;background:linear-gradient(135deg,#1a1a2e,#e63946);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
h2{font-size:28px;margin:30px 0 20px;color:#1a1a2e;border-left:4px solid #e63946;padding-left:16px}
h3{font-size:22px;margin:20px 0 15px;color:#2c3e50}
h4{font-size:18px;margin:15px 0 10px;color:#555}
p{margin-bottom:16px;color:#444}
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.card{background:rgba(255,255,255,0.75);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:16px;padding:24px;box-shadow:0 4px 20px rgba(0,0,0,0.06);transition:transform .3s,box-shadow .3s,background .3s;border:1px solid rgba(255,255,255,0.3)}
.card:hover{transform:translateY(-6px);box-shadow:0 12px 32px rgba(0,0,0,0.12);background:rgba(255,255,255,0.9)}
.card svg{width:48px;height:48px;margin-bottom:12px;transition:transform .3s}
.card:hover svg{transform:rotate(5deg) scale(1.1)}
.card h3{font-size:20px;margin-bottom:10px}
.article-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.article-item{background:rgba(255,255,255,0.7);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-radius:16px;padding:24px;box-shadow:0 4px 20px rgba(0,0,0,0.06);transition:transform .3s,box-shadow .3s;border:1px solid rgba(255,255,255,0.2)}
.article-item:hover{transform:translateY(-4px);box-shadow:0 8px 28px rgba(0,0,0,0.1)}
.article-item .meta{font-size:13px;color:#999;margin-bottom:8px}
.article-item h4{font-size:18px;margin-bottom:8px;color:#1a1a2e}
.article-item p{font-size:14px;color:#666}
.article-item .read-more{display:inline-block;margin-top:10px;color:#e63946;font-weight:bold;transition:gap .3s;display:inline-flex;align-items:center;gap:4px}
.article-item .read-more:hover{gap:8px;color:#c1121f}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid rgba(238,238,238,0.6);border-radius:12px;margin-bottom:12px;overflow:hidden;background:rgba(255,255,255,0.6);backdrop-filter:blur(8px);transition:box-shadow .3s}
.faq-item:hover{box-shadow:0 4px 16px rgba(0,0,0,0.06)}
.faq-question{background:rgba(255,255,255,0.8);padding:16px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:bold;font-size:16px;transition:background .3s}
.faq-question:hover{background:rgba(230,57,70,0.08)}
.faq-question .icon{font-size:20px;transition:transform .3s;color:#e63946}
.faq-answer{padding:0 20px;max-height:0;overflow:hidden;transition:max-height .4s ease,background .3s;background:rgba(254,254,254,0.5)}
.faq-answer p{padding:16px 0;margin:0}
.faq-item.open .faq-answer{max-height:600px}
.faq-item.open .faq-question .icon{transform:rotate(45deg)}
.howto-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;margin:20px 0}
.step{background:rgba(255,255,255,0.7);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-radius:16px;padding:20px;text-align:center;box-shadow:0 4px 20px rgba(0,0,0,0.06);transition:transform .3s,box-shadow .3s;border:1px solid rgba(255,255,255,0.2)}
.step:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,0.1)}
.step .num{width:40px;height:40px;background:linear-gradient(135deg,#e63946,#ff6b6b);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 12px;font-weight:bold;transition:transform .3s}
.step:hover .num{transform:scale(1.15)}
footer{background:linear-gradient(135deg,#1a1a2e,#16213e);color:#ccc;padding:40px 0 20px;margin-top:40px;position:relative}
footer::before{content:'';position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,#e63946,#ff6b6b,#e63946)}
footer .container{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px}
footer h4{color:#fff;margin-bottom:15px;position:relative;display:inline-block}
footer h4::after{content:'';display:block;width:30px;height:2px;background:#e63946;margin-top:4px}
footer ul{list-style:none}
footer ul li{margin-bottom:8px;transition:transform .3s}
footer ul li:hover{transform:translateX(4px)}
footer ul li a{color:#aaa;transition:color .3s}
footer ul li a:hover{color:#e63946}
.copyright{text-align:center;padding-top:20px;border-top:1px solid #333;margin-top:30px;font-size:14px;color:#888}
.back-top{position:fixed;bottom:40px;right:40px;background:linear-gradient(135deg,#e63946,#c1121f);color:#fff;width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;visibility:hidden;transition:all .3s;z-index:999;border:none;font-size:24px;box-shadow:0 4px 16px rgba(230,57,70,0.4)}
.back-top.visible{opacity:1;visibility:visible}
.back-top:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(230,57,70,0.5)}
.dark-mode-toggle{position:fixed;bottom:100px;right:40px;background:rgba(44,62,80,0.85);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);color:#fff;width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:999;border:none;font-size:22px;transition:all .3s;box-shadow:0 4px 16px rgba(0,0,0,0.2)}
.dark-mode-toggle:hover{transform:scale(1.1);background:rgba(44,62,80,0.95)}
body.dark{background:linear-gradient(135deg,#121212,#1a1a2e);color:#e0e0e0}
body.dark .navbar{background:rgba(30,30,30,0.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}
body.dark .card,body.dark .article-item,body.dark .faq-item,body.dark .step{background:rgba(42,42,42,0.75);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-color:rgba(255,255,255,0.05);box-shadow:0 4px 20px rgba(0,0,0,0.3)}
body.dark .faq-question{background:rgba(42,42,42,0.8)}
body.dark .faq-answer{background:rgba(51,51,51,0.5)}
body.dark p,body.dark .section-title,body.dark h2,body.dark h3,body.dark h4{color:#e0e0e0}
body.dark .breadcrumb{color:#aaa}
body.dark .search-box input{background:rgba(51,51,51,0.7);border-color:#555;color:#fff}
body.dark .nav-menu li a{color:#e0e0e0}
body.dark .nav-menu li a:hover{background:rgba(230,57,70,0.2)}
body.dark .section-title{color:#e0e0e0}
body.dark h1{-webkit-text-fill-color:#e0e0e0;background:linear-gradient(135deg,#e0e0e0,#e63946);-webkit-background-clip:text;background-clip:text}
body.dark .banner{background:linear-gradient(135deg,#0a0a1a,#1a1a2e,#16213e)}
@media(max-width:768px){
.nav-menu{display:none;position:absolute;top:70px;left:0;width:100%;background:rgba(255,255,255,0.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);flex-direction:column;padding:20px;box-shadow:0 4px 20px rgba(0,0,0,0.1)}
body.dark .nav-menu{background:rgba(30,30,30,0.95)}
.nav-menu.open{display:flex}
.mobile-toggle{display:flex}
.search-box input{width:120px}
h1{font-size:28px}
.banner-slide h2{font-size:28px}
.banner-slide p{font-size:16px}
.back-top{right:20px;bottom:20px;width:40px;height:40px;font-size:18px}
.dark-mode-toggle{right:20px;bottom:70px;width:40px;height:40px;font-size:18px}
.card-grid{grid-template-columns:1fr}
.article-list{grid-template-columns:1fr}
.howto-steps{grid-template-columns:1fr 1fr}
footer .container{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){
.howto-steps{grid-template-columns:1fr}
footer .container{grid-template-columns:1fr}
.banner{min-height:280px}
.banner-slide h2{font-size:22px}
.banner-slide p{font-size:14px}
}