/* 全局重置与设计系统 */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#f0f4ff;--bg-card:#ffffff;--text:#1a1c2e;--text-secondary:#3d405b;--accent:#1e2b5c;--accent-light:#3b4d8a;--gold:#c9a84c;--gold-light:#f5d97a;--glass:rgba(255,255,255,0.25);--shadow:0 12px 40px rgba(0,0,0,0.05);--radius:24px;--radius-sm:12px;--transition:0.3s cubic-bezier(0.25,0.1,0.25,1);--gradient-hero:linear-gradient(145deg,#0f1a3a,#1f2d5a);--gradient-card:linear-gradient(135deg,#667eea 0%,#764ba2 100%);--gradient-accent:linear-gradient(135deg,#667eea 0%,#764ba2 100%)}
.dark{--bg:#0b0c1a;--bg-card:#14162e;--text:#f0f2fe;--text-secondary:#b0b7d0;--accent:#2c3e7a;--accent-light:#4a62a8;--glass:rgba(10,12,30,0.6);--shadow:0 12px 40px rgba(0,0,0,0.6);--gradient-hero:linear-gradient(145deg,#0a0c1a,#1a1c3a);--gradient-card:linear-gradient(135deg,#4a3f6b 0%,#2a3a5a 100%);--gradient-accent:linear-gradient(135deg,#4a3f6b 0%,#2a3a5a 100%)}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;transition:background 0.3s,color 0.3s;scroll-behavior:smooth;min-height:100vh}
a{color:var(--gold);text-decoration:none;transition:color 0.3s}
a:hover{color:var(--gold-light)}
img,svg{display:block;max-width:100%}
.container{max-width:1280px;margin:0 auto;padding:0 24px}
/* 玻璃效果 */
.glass{background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,0.08);border-radius:var(--radius);box-shadow:var(--shadow)}
/* 全局头部 */
.global-header{position:sticky;top:0;z-index:100;background:var(--bg);border-bottom:1px solid rgba(200,200,230,0.2);transition:background 0.3s,box-shadow 0.3s;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.dark .global-header{background:rgba(11,12,26,0.95)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 0;flex-wrap:wrap}
.logo svg{height:42px;width:auto;transition:transform 0.3s}
.logo:hover svg{transform:scale(1.05)}
.nav{display:flex;gap:8px;flex-wrap:wrap}
.nav a{padding:8px 14px;border-radius:40px;font-weight:500;color:var(--text);transition:var(--transition);font-size:0.9rem;position:relative;background:transparent}
.nav a:hover,.nav a.active{background:var(--accent-light);color:#fff;transform:translateY(-2px);box-shadow:0 4px 12px rgba(59,77,138,0.3)}
.theme-toggle{background:none;border:2px solid var(--accent-light);border-radius:30px;width:44px;height:44px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text);font-size:1.4rem;transition:var(--transition);margin-left:8px}
.theme-toggle:hover{background:var(--accent-light);color:#fff;transform:rotate(15deg)}
.mobile-menu-btn{display:none;background:none;border:none;font-size:2rem;color:var(--text);cursor:pointer;transition:transform 0.3s}
.mobile-menu-btn:hover{transform:scale(1.1)}
@media (max-width:900px){.nav{display:none;width:100%;flex-direction:column;margin-top:12px;gap:4px;background:var(--bg-card);border-radius:var(--radius-sm);padding:8px;box-shadow:var(--shadow)}.nav.open{display:flex}.nav a{padding:12px 16px;border-radius:8px}.mobile-menu-btn{display:block}}
/* 通用卡片 */
.card{background:var(--bg-card);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);transition:transform 0.2s,box-shadow 0.2s;border:1px solid rgba(200,200,230,0.1);position:relative;overflow:hidden}
.card:hover{transform:translateY(-6px);box-shadow:0 20px 40px rgba(0,0,0,0.12);border-color:var(--accent-light)}
.card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:var(--gradient-accent);opacity:0;transition:opacity 0.3s}
.card:hover::before{opacity:1}
/* 渐变Banner */
.hero{position:relative;border-radius:var(--radius);overflow:hidden;margin:28px 0;background:var(--gradient-hero);padding:60px 40px;color:#fff;min-height:380px;display:flex;align-items:center;box-shadow:0 20px 60px rgba(15,26,58,0.3)}
.hero::after{content:'';position:absolute;inset:0;background:radial-gradient(circle at 80% 20%, rgba(201,168,76,0.25), transparent 60%);pointer-events:none;animation:pulseGlow 4s ease-in-out infinite}
@keyframes pulseGlow{0%,100%{opacity:0.6}50%{opacity:1}}
.hero-content{position:relative;z-index:2;max-width:700px}
.hero h1{font-size:3.2rem;font-weight:700;letter-spacing:-0.02em;margin-bottom:16px;line-height:1.2;background:linear-gradient(135deg,#fff 0%,var(--gold-light) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:1.2rem;opacity:0.9;margin-bottom:28px;text-shadow:0 2px 4px rgba(0,0,0,0.2)}
.hero .btn-group{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:60px;font-weight:600;background:var(--gold);color:#0b0c1a;transition:var(--transition);border:none;cursor:pointer;box-shadow:0 4px 15px rgba(201,168,76,0.3);position:relative;overflow:hidden}
.btn::after{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.2),transparent);transition:left 0.5s}
.btn:hover::after{left:100%}
.btn-outline{background:transparent;border:2px solid var(--gold);color:var(--gold);box-shadow:none}
.btn-outline:hover{background:var(--gold);color:#0b0c1a;transform:scale(1.05);box-shadow:0 8px 24px rgba(201,168,76,0.3)}
.btn:hover{transform:scale(1.05);box-shadow:0 8px 24px rgba(201,168,76,0.4)}
/* 滚动动画 */
.fade-up{opacity:0;transform:translateY(30px);transition:opacity 0.6s ease,transform 0.6s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}
/* 网格 */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
@media (max-width:900px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr;gap:20px}}
@media (max-width:600px){.grid-2,.grid-3,.grid-4{gap:16px}}
/* 数字动画 */
.stat-number{font-size:2.8rem;font-weight:700;color:var(--gold);line-height:1.2;transition:color 0.3s}
.card:hover .stat-number{color:var(--gold-light)}
/* FAQ折叠 */
.faq-item{border-bottom:1px solid rgba(0,0,0,0.06);padding:16px 0;transition:background 0.3s}
.dark .faq-item{border-color:rgba(255,255,255,0.06)}
.faq-item:hover{background:rgba(201,168,76,0.05);border-radius:8px;padding-left:8px;padding-right:8px}
.faq-question{font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;padding:8px 0;transition:color 0.3s}
.faq-question:hover{color:var(--gold)}
.faq-question span{transition:transform 0.3s;font-size:0.8rem}
.faq-item.open .faq-question span{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.4s ease,opacity 0.4s;color:var(--text-secondary);opacity:0}
.faq-item.open .faq-answer{max-height:300px;padding-bottom:12px;opacity:1}
/* 页脚 */
.footer{background:var(--accent);color:#d0d6f0;padding:48px 0 24px;margin-top:60px;border-radius:var(--radius) var(--radius) 0 0;position:relative;overflow:hidden}
.footer::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:var(--gradient-accent)}
.footer a{color:#c9b87a;transition:color 0.3s}
.footer a:hover{color:var(--gold-light)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;gap:20px}}
@media (max-width:600px){.footer-grid{grid-template-columns:1fr;gap:16px}}
/* 轮播模拟 (简单) */
.carousel{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:16px 0;scrollbar-width:none;cursor:grab}
.carousel::-webkit-scrollbar{display:none}
.carousel-item{min-width:280px;scroll-snap-align:start;background:var(--bg-card);border-radius:var(--radius-sm);padding:20px;box-shadow:var(--shadow);transition:transform 0.3s,box-shadow 0.3s;border:1px solid rgba(200,200,230,0.1)}
.carousel-item:hover{transform:translateY(-4px) scale(1.02);box-shadow:0 12px 30px rgba(0,0,0,0.1);border-color:var(--gold)}
/* 模拟搜索(模拟框) */
.search-sim{background:var(--bg-card);border-radius:60px;padding:12px 24px;display:flex;align-items:center;gap:12px;border:1px solid var(--accent-light);max-width:400px;transition:border-color 0.3s,box-shadow 0.3s}
.search-sim:focus-within{border-color:var(--gold);box-shadow:0 0 0 3px rgba(201,168,76,0.2)}
.search-sim input{background:transparent;border:none;flex:1;color:var(--text);outline:none;font-size:0.95rem}
.search-sim input::placeholder{color:var(--text-secondary);opacity:0.6}
.search-sim span{font-size:1.2rem;cursor:pointer;transition:transform 0.3s}
.search-sim span:hover{transform:scale(1.1)}
/* 返回顶部 */
#backTop{position:fixed;bottom:30px;right:30px;background:var(--gold);border:none;width:48px;height:48px;border-radius:50%;font-size:1.8rem;cursor:pointer;box-shadow:0 8px 20px rgba(0,0,0,0.2);z-index:99;display:flex;align-items:center;justify-content:center;transition:0.3s;color:#0b0c1a;opacity:0;visibility:hidden;transform:translateY(20px)}
#backTop.show{opacity:1;visibility:visible;transform:translateY(0)}
#backTop:hover{transform:scale(1.15) translateY(-4px);box-shadow:0 12px 28px rgba(201,168,76,0.4)}
/* 文章卡片特殊样式 */
#articleGrid article{transition:transform 0.3s,box-shadow 0.3s}
#articleGrid article:hover{transform:translateY(-6px) scale(1.02);box-shadow:0 16px 40px rgba(0,0,0,0.12)}
#articleGrid article h3{font-size:1.1rem;margin-bottom:8px;transition:color 0.3s}
#articleGrid article:hover h3{color:var(--gold)}
/* 列表样式 */
ul[style*="list-style:none"] li{padding:8px 0;border-bottom:1px solid rgba(200,200,230,0.1);transition:padding-left 0.3s}
ul[style*="list-style:none"] li:hover{padding-left:8px;color:var(--gold)}
/* 联系卡片 */
.card h2{font-size:1.5rem;margin-bottom:12px;background:var(--gradient-accent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.card h3{font-size:1.2rem;margin-bottom:8px;color:var(--text)}
/* 响应式微调 */
@media (max-width:600px){.hero{padding:40px 20px;min-height:280px}.hero h1{font-size:2rem}.hero p{font-size:1rem}.btn{padding:12px 24px;font-size:0.9rem}.card{padding:20px}.stat-number{font-size:2rem}}
/* 暗色模式适配 */
.dark .card{border-color:rgba(255,255,255,0.05)}
.dark .search-sim{border-color:var(--accent-light)}
.dark .carousel-item{border-color:rgba(255,255,255,0.05)}
.dark #articleGrid article{border-color:rgba(255,255,255,0.05)}
/* 额外动画 */
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.hero .btn-group .btn:first-child{animation:float 3s ease-in-out infinite}
/* 页脚友情链接 */
.footer a[href]{display:inline-block;margin:0 4px;padding:2px 6px;border-radius:4px;transition:background 0.3s}
.footer a[href]:hover{background:rgba(255,255,255,0.1)}
/* 安全声明 */
.footer div:last-child span{opacity:0.8;font-size:0.8rem}