:root{--color-primary:#c41103;--color-primary-dark:#c41103;--color-primary-light:#fc362d;--color-bg:#fef9f5;--color-accent:#fad603;--color-accent-dark:#dc8f03;--color-link:#06f;--color-border:#ebe0d8;--color-text:#333;--color-text-light:#888;--color-text-muted:#aaa;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--shadow-card:0 2px 12px #0000000f;--shadow-hover:0 8px 30px #ed1f321f;--shadow-nav:0 2px 16px #ed1f3226;--gradient-primary:linear-gradient(135deg, #ed1f32 0%, #c41103 100%);--gradient-hero:linear-gradient(160deg, #ed1f32 0%, #c41103 60%, #a00d02 100%);--transition:all .3s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--color-bg);color:var(--color-text);font-family:Microsoft YaHei,-apple-system,BlinkMacSystemFont,PingFang SC,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}ul,li{list-style:none}img{vertical-align:middle;border:0}.clear{clear:both}.main-nav{background:var(--gradient-primary);box-shadow:var(--shadow-nav);z-index:100;position:sticky;top:0}.nav-inner{justify-content:space-between;align-items:center;max-width:1200px;height:64px;margin:0 auto;padding:0 20px;display:flex}.nav-logo{align-items:center;gap:10px;display:flex}.nav-logo .logo-text{color:#fff;letter-spacing:2px;text-shadow:0 2px 4px #00000026;font-size:22px;font-weight:700}.nav-logo .logo-badge{background:var(--color-accent);color:var(--color-primary-dark);letter-spacing:1px;border-radius:10px;padding:2px 8px;font-size:11px;font-weight:700}.nav-menu{align-items:center;gap:28px;display:contents}.nav-menu a{color:#ffffffe6;transition:var(--transition);font-size:15px;font-weight:500;position:relative}.nav-menu a:hover{color:var(--color-accent)}.nav-menu a:hover:after{content:"";background:var(--color-accent);border-radius:1px;height:2px;position:absolute;bottom:-4px;left:0;right:0}.nav-cta{align-items:center;gap:12px;display:flex}.nav-cta .btn-login{color:#fff;transition:var(--transition);border:1px solid #ffffff80;border-radius:20px;padding:6px 18px;font-size:14px}.nav-cta .btn-login:hover{background:#ffffff26;border-color:#fff}.nav-cta .btn-register{background:var(--color-accent);color:var(--color-primary-dark);transition:var(--transition);border-radius:20px;padding:6px 18px;font-size:14px;font-weight:700}.nav-cta .btn-register:hover{background:#ffe800;transform:scale(1.05)}.nav-cta .btn-service{color:#fff;transition:var(--transition);border:1px solid #ffffff59;border-radius:20px;align-items:center;gap:4px;padding:6px 14px;font-size:13px;text-decoration:none;display:inline-flex}.nav-cta .btn-service:before{content:"💬";font-size:14px}.nav-cta .btn-service:hover{background:#ffffff26;border-color:#fff}.hero-section{background:var(--gradient-hero);padding:36px 0 32px;position:relative;overflow:hidden}.hero-section:before{content:"";pointer-events:none;background:radial-gradient(circle,#fad6031f 0%,#0000 70%);width:400px;height:400px;position:absolute;top:-50%;right:-10%}.hero-inner{z-index:1;max-width:1200px;margin:0 auto;padding:0 20px;position:relative}.hero-title{color:#fff;letter-spacing:3px;text-shadow:0 2px 8px #0003;margin-bottom:8px;font-size:28px;font-weight:700}.hero-subtitle{color:#ffffffd9;letter-spacing:1px;margin-bottom:20px;font-size:14px}.hero-tags{flex-wrap:wrap;gap:12px;display:flex}.hero-tag{color:#fff;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);transition:var(--transition);background:#ffffff1f;border:1px solid #fff3;border-radius:20px;padding:5px 14px;font-size:13px}.hero-tag:hover{background:#fff3;border-color:#fff6}.hero-tag .dot{background:var(--color-accent);vertical-align:middle;border-radius:50%;width:6px;height:6px;margin-right:6px;display:inline-block}.page-body{max-width:1200px;margin:0 auto;padding:0 20px 40px}.breadcrumb{color:var(--color-text-light);padding:20px 0 10px;font-size:13px}.breadcrumb a{color:var(--color-primary);transition:var(--transition)}.breadcrumb a:hover{text-decoration:underline}.breadcrumb .sep{color:var(--color-text-muted);margin:0 6px}.breadcrumb .current{color:var(--color-text);font-weight:600}.service-card{border-radius:var(--radius-lg);background:#fff;margin-bottom:30px;overflow:hidden;box-shadow:0 4px 30px #0000000f}.service-card-header{background:var(--gradient-primary);align-items:center;gap:12px;padding:24px 40px;display:flex}.service-card-header .icon{color:#fff;background:#fff3;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;font-size:20px;display:flex}.service-card-header .title{color:#fff;letter-spacing:1px;font-size:20px;font-weight:700}.service-card-header .subtitle{color:#fffc;margin-top:2px;font-size:13px}.service-card-body{padding:36px 40px}.xieyi-title{text-align:center;color:var(--color-primary);letter-spacing:2px;margin-bottom:8px;font-size:26px;font-weight:700}.xieyi-title:after{content:"";background:var(--gradient-primary);border-radius:2px;width:60px;height:3px;margin:12px auto 0;display:block}.xieyi-update{text-align:center;color:var(--color-text-muted);margin-bottom:30px;font-size:13px}.xieyi-section{margin-bottom:28px}.xieyi-section h3{color:var(--color-primary);border-left:4px solid var(--color-primary);margin-bottom:12px;padding-left:14px;font-size:17px;font-weight:700;line-height:1.5}.xieyi-section .content{color:var(--color-text);padding-left:18px;font-size:14px;line-height:2}.xieyi-section .content p{text-indent:2em;margin-bottom:10px}.xieyi-section .content .highlight{color:var(--color-primary);font-weight:600}.footer{background:var(--gradient-primary);color:#fff;padding:30px 0 24px}.footer-inner{justify-content:space-between;align-items:flex-start;gap:30px;max-width:1200px;margin:0 auto;padding:0 20px;display:flex}.footer-left{flex:1}.footer-logo{margin-bottom:12px}.footer-links-row{margin-bottom:10px;font-size:13px}.footer-links-row .label{color:var(--color-accent);margin-right:8px;font-weight:600}.footer-links-row a{color:#fffc;transition:var(--transition);margin:0 4px}.footer-links-row a:hover{color:var(--color-accent)}.footer-links-row .sep{color:#ffffff4d;margin:0 2px}.footer-meta{color:#fff9;font-size:12px;line-height:2}.footer-right{text-align:center;flex-shrink:0}@media (width<=768px){.nav-menu,.nav-cta .btn-service{display:none}.hero-title{font-size:22px}.service-card-body{padding:24px 20px}.xieyi-title{font-size:22px}.xieyi-section h3{font-size:15px}.footer-inner{flex-direction:column}}