/* roulang page: index */
:root{--primary:#1a56db;--primary-rgb:26,86,219;--primary-dark:#1e40af;--accent:#0ea5a4;--accent-rgb:14,165,164;--dark-bg:#0b1224;--bg:#f4f6fb;--surface:#fff;--text:#132032;--text-muted:#5b6b7f;--border:#e1e6ef;--radius-sm:8px;--radius:14px;--radius-lg:20px;--shadow-sm:0 2px 9px rgba(15,28,46,.07);--shadow:0 8px 30px rgba(15,28,46,.09);--shadow-lg:0 18px 48px rgba(15,28,46,.14);--transition:all .3s ease;--font-main:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif}
*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-main);background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}img{max-width:100%;display:block}a{text-decoration:none;color:inherit;transition:var(--transition)}ul{list-style:none}button,input,select,textarea{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.site-header{position:fixed;top:16px;left:0;right:0;z-index:1000;padding:0 24px}
.dock-nav{max-width:1080px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.88);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.6);border-radius:999px;padding:10px 18px 10px 24px;box-shadow:0 8px 32px rgba(15,28,46,.12)}
.brand{font-size:22px;font-weight:800;letter-spacing:-.5px;color:var(--primary);display:inline-flex;align-items:center;gap:8px}.brand::before{content:'';width:10px;height:10px;border-radius:3px;background:linear-gradient(135deg,var(--primary),var(--accent))}
.nav-links{display:flex;align-items:center;gap:4px}.nav-links a{padding:8px 16px;border-radius:999px;font-size:15px;font-weight:500;color:var(--text-muted)}.nav-links a:hover{color:var(--primary);background:rgba(26,86,219,.08)}.nav-links a.active{color:var(--primary);background:rgba(26,86,219,.1)}
.header-cta{display:inline-flex;align-items:center;gap:6px}.menu-toggle{display:none;background:none;border:1px solid var(--border);border-radius:50%;width:38px;height:38px;font-size:16px;align-items:center;justify-content:center;color:var(--text);cursor:pointer}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:999px;font-size:15px;font-weight:600;border:none;cursor:pointer;transition:var(--transition);line-height:1.4}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(var(--primary-rgb),.3)}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 10px 28px rgba(var(--primary-rgb),.4)}.btn-outline{background:transparent;color:var(--text);border:1.5px solid var(--border)}.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:rgba(26,86,219,.04)}.btn-light{background:#fff;color:var(--primary)}.btn-light:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(255,255,255,.3)}
.hero{position:relative;padding:180px 0 140px;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff;overflow:hidden}.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,14,30,.88) 20%,rgba(8,14,30,.45) 70%,rgba(8,14,30,.2))}.hero-content{position:relative;z-index:2;max-width:700px}.hero-tag{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.24);padding:6px 16px;border-radius:999px;font-size:13px;font-weight:500;letter-spacing:.5px;margin-bottom:22px}.hero h1{font-size:52px;font-weight:800;line-height:1.2;margin-bottom:20px;letter-spacing:-1px}.hero h1 span{background:linear-gradient(120deg,#7dd3fc,#a5f3fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-desc{font-size:18px;color:rgba(255,255,255,.85);max-width:600px;margin-bottom:32px;line-height:1.8}.hero-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.hero-note{margin-top:26px;display:flex;align-items:center;gap:20px;flex-wrap:wrap;color:rgba(255,255,255,.65);font-size:13px}.hero-note i{color:#7dd3fc;margin-right:4px}
.section{padding:96px 0}.section-label{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:var(--primary);background:rgba(26,86,219,.08);padding:6px 14px;border-radius:999px;margin-bottom:16px}.section-title{font-size:38px;font-weight:800;line-height:1.25;margin-bottom:14px;letter-spacing:-.5px}.section-sub{color:var(--text-muted);font-size:16px;max-width:640px;line-height:1.8}.section-head{margin-bottom:48px}.section-head.center{text-align:center}.section-head.center .section-sub{margin:0 auto}
.metrics{background:transparent;padding:0;margin-top:-60px;position:relative;z-index:5}.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;background:#fff;border-radius:var(--radius-lg);padding:36px;box-shadow:var(--shadow-lg)}.metric-item{text-align:center;padding:16px 8px;border-right:1px solid var(--border)}.metric-item:last-child{border-right:none}.metric-num{font-size:38px;font-weight:800;color:var(--primary);line-height:1.2;margin-bottom:6px}.metric-label{color:var(--text-muted);font-size:14px}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.feature-card{background:#fff;border-radius:var(--radius-lg);padding:36px 28px;border:1px solid var(--border);transition:var(--transition);position:relative;overflow:hidden}.feature-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:var(--transition)}.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}.feature-card:hover::before{opacity:1}.feature-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,rgba(26,86,219,.1),rgba(14,165,164,.1));display:flex;align-items:center;justify-content:center;font-size:22px;color:var(--primary);margin-bottom:22px}.feature-card h3{font-size:19px;font-weight:700;margin-bottom:10px}.feature-card p{color:var(--text-muted);font-size:15px;line-height:1.7}
.more-cap{margin-top:36px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.more-cap .cap-item{display:flex;align-items:center;gap:12px;padding:16px 20px;background:#fff;border-radius:var(--radius);border:1px solid var(--border);font-size:15px;font-weight:500;color:var(--text)}.more-cap .cap-item i{color:var(--accent);font-size:14px}
.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.category-card{background:#fff;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);transition:var(--transition);display:block}.category-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}.category-card .cover{position:relative;height:170px;overflow:hidden}.category-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}.category-card:hover .cover img{transform:scale(1.05)}.category-card .cover::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(15,28,46,.35),transparent)}.category-card .body{padding:24px 24px 28px}.category-card .badge{display:inline-block;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;background:rgba(26,86,219,.08);color:var(--primary);margin-bottom:12px}.category-card h3{font-size:20px;font-weight:700;margin-bottom:8px}.category-card p{color:var(--text-muted);font-size:14px;line-height:1.7;margin-bottom:16px}.link-more{color:var(--primary);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:4px}.link-more i{transition:var(--transition);font-size:13px}.link-more:hover i{transform:translateX(4px)}
.steps{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}.step-item{position:relative;padding:32px 24px;text-align:center;background:var(--bg);border-radius:var(--radius-lg);border:1px solid var(--border)}.step-num{display:inline-flex;width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;font-weight:700;font-size:17px;align-items:center;justify-content:center;margin-bottom:16px;box-shadow:0 6px 16px rgba(var(--primary-rgb),.3)}.step-item h3{font-size:17px;margin-bottom:8px}.step-item p{color:var(--text-muted);font-size:14px}
.news-section{background:var(--bg)}.news-layout{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:start}.news-list{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--border);overflow:hidden}.news-item{display:flex;align-items:flex-start;gap:24px;padding:28px 32px;border-bottom:1px solid var(--border);transition:var(--transition)}.news-item:last-child{border-bottom:none}.news-item:hover{background:rgba(26,86,219,.02)}.news-info{flex:1;min-width:0}.news-meta{display:flex;align-items:center;gap:14px;margin-bottom:8px}.news-cat{font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;background:rgba(14,165,164,.1);color:var(--accent)}.news-time{font-size:13px;color:var(--text-muted)}.news-item h3{font-size:17px;font-weight:650;margin-bottom:6px;transition:color .3s;line-height:1.5}.news-item h3:hover{color:var(--primary)}.news-item p{color:var(--text-muted);font-size:14px;line-height:1.7;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.news-side{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--border);padding:32px}.news-side h4{font-size:18px;font-weight:700;margin-bottom:20px;display:flex;align-items:center;gap:8px}.side-list li{padding:14px 0;border-bottom:1px dashed var(--border);font-size:14px;color:var(--text);display:flex;gap:10px;align-items:baseline}.side-list li:last-child{border-bottom:none}.side-list i{color:var(--accent);font-size:8px;transform:translateY(-3px)}.side-list a:hover{color:var(--primary)}
.faq-wrap{max-width:820px;margin:0 auto}.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;overflow:hidden;transition:var(--transition)}.faq-item:hover{box-shadow:var(--shadow-sm);border-color:#d3dae7}.faq-question{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 28px;font-size:16px;font-weight:600;cursor:pointer;background:none;border:none;width:100%;text-align:left;color:var(--text);transition:var(--transition)}.faq-question:hover{color:var(--primary)}.faq-question i{color:var(--primary);font-size:14px;transition:transform .3s}.faq-item.active .faq-question i{transform:rotate(45deg)}.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 28px;color:var(--text-muted);font-size:15px;line-height:1.8}.faq-item.active .faq-answer{max-height:500px;padding:0 28px 24px}
.cta-section{position:relative;padding:100px 0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;color:#fff;text-align:center}.cta-section::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(11,18,36,.92),rgba(26,86,219,.7))}.cta-content{position:relative;z-index:2;max-width:720px;margin:0 auto}.cta-content h2{font-size:36px;font-weight:800;margin-bottom:16px}.cta-content p{color:rgba(255,255,255,.8);font-size:16px;margin-bottom:32px;line-height:1.8}.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.site-footer{background:var(--dark-bg);color:rgba(255,255,255,.75);padding:76px 0 32px}.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:60px;margin-bottom:48px}.footer-brand .brand{color:#fff;margin-bottom:12px}.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:320px}.footer-col h5{color:#fff;font-size:15px;font-weight:600;margin-bottom:20px}.footer-col ul li{margin-bottom:12px}.footer-col ul a{font-size:14px;color:rgba(255,255,255,.6)}.footer-col ul a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:28px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:rgba(255,255,255,.45)}.footer-bottom .domain{color:rgba(255,255,255,.3)}
.empty-tip{text-align:center;padding:40px;color:var(--text-muted);font-size:15px}
@media(max-width:1024px){.hero h1{font-size:42px}.metrics-grid{grid-template-columns:repeat(2,1fr)}.metric-item:nth-child(2){border-right:none}.metric-item:nth-child(3),.metric-item:nth-child(4){border-top:1px solid var(--border)}.feature-grid{grid-template-columns:repeat(2,1fr)}.category-grid{grid-template-columns:repeat(2,1fr)}.steps-grid{grid-template-columns:repeat(2,1fr)}.news-layout{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:36px}}@media(max-width:768px){.menu-toggle{display:inline-flex}.nav-links{display:none;position:absolute;top:calc(100% + 10px);left:16px;right:16px;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:12px;flex-direction:column;align-items:stretch;border:1px solid var(--border)}.nav-links.open{display:flex}.nav-links a{padding:14px 20px}.header-cta .btn{padding:10px 20px;font-size:14px}.hero{padding:140px 0 120px}.hero h1{font-size:34px}.section{padding:68px 0}.section-title{font-size:30px}.metric-item{border-right:none;border-bottom:1px solid var(--border)}.metric-item:last-child{border-bottom:none}.more-cap{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:30px}}@media(max-width:520px){.container{padding:0 18px}.hero h1{font-size:28px}.hero-desc{font-size:16px}.hero-actions .btn{width:100%}.feature-grid{grid-template-columns:1fr}.category-grid{grid-template-columns:1fr}.steps-grid{grid-template-columns:1fr}.metrics-grid{grid-template-columns:1fr}.metric-item{border-bottom:1px solid var(--border)}.news-item{flex-direction:column;gap:12px;padding:22px}.cta-content h2{font-size:28px}}

:root{--primary:#1a56db;--primary-rgb:26,86,219;--primary-dark:#1e40af;--accent:#0ea5a4;--dark-bg:#0b1224;--bg:#f4f6fb;--surface:#fff;--text:#132032;--text-muted:#5b6b7f;--border:#e1e6ef;--radius:14px;--radius-lg:20px;--shadow-sm:0 2px 9px rgba(15,28,46,.07);--shadow:0 8px 30px rgba(15,28,46,.09);--shadow-lg:0 18px 48px rgba(15,28,46,.14);--transition:all .3s ease;--font-main:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif}
*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}img{max-width:100%;display:block}a{text-decoration:none;color:inherit;transition:var(--transition)}ul{list-style:none}button,input{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.site-header{position:fixed;top:16px;left:0;right:0;z-index:1000;padding:0 24px}.dock-nav{max-width:1080px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.88);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.6);border-radius:999px;padding:10px 18px 10px 24px;box-shadow:0 8px 32px rgba(15,28,46,.12)}.brand{font-size:22px;font-weight:800;color:var(--primary);display:inline-flex;align-items:center;gap:8px}.brand::before{content:'';width:10px;height:10px;border-radius:3px;background:linear-gradient(135deg,var(--primary),var(--accent))}.nav-links{display:flex;align-items:center;gap:4px}.nav-links a{padding:8px 16px;border-radius:999px;font-size:15px;font-weight:500;color:var(--text-muted)}.nav-links a:hover{color:var(--primary);background:rgba(26,86,219,.08)}.nav-links a.active{color:var(--primary);background:rgba(26,86,219,.1)}.header-cta{display:inline-flex;align-items:center;gap:6px}.menu-toggle{display:none;background:none;border:1px solid var(--border);border-radius:50%;width:38px;height:38px;font-size:16px;align-items:center;justify-content:center;color:var(--text);cursor:pointer}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:999px;font-size:15px;font-weight:600;border:none;cursor:pointer;transition:var(--transition)}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(var(--primary-rgb),.3)}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px)}.btn-outline{background:transparent;color:var(--text);border:1.5px solid var(--border)}.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.page-hero{position:relative;padding:160px 0 60px;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;color:#fff}.page-hero::before{content:'';position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,14,30,.88),rgba(8,14,30,.4))}.page-hero .container{position:relative;z-index:2}.breadcrumb{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.7);margin-bottom:16px}.breadcrumb a:hover{color:#fff}.breadcrumb i{font-size:11px}
.article-layout{display:grid;grid-template-columns:1.6fr 1fr;gap:40px;padding:48px 0 80px;align-items:start}.article-main{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--border);padding:44px;box-shadow:var(--shadow-sm)}.article-header{margin-bottom:28px;padding-bottom:24px;border-bottom:1px solid var(--border)}.article-header h1{font-size:32px;font-weight:800;line-height:1.35;margin-bottom:16px}.article-meta{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:14px;color:var(--text-muted)}.article-meta .cat{background:rgba(14,165,164,.1);color:var(--accent);padding:4px 12px;border-radius:999px;font-weight:600;font-size:12px}.article-content{font-size:16px;line-height:2;color:#334155}.article-content h2{font-size:24px;font-weight:700;color:var(--text);margin:36px 0 14px}.article-content h3{font-size:19px;font-weight:700;color:var(--text);margin:28px 0 12px}.article-content p{margin-bottom:18px}.article-content img{border-radius:var(--radius);margin:24px 0}.article-content ul,.article-content ol{margin:0 0 18px 0;padding-left:22px}.article-content li{margin-bottom:8px}.article-tags{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:38px;padding-top:22px;border-top:1px solid var(--border)}.tag{background:rgba(26,86,219,.07);color:var(--primary);padding:6px 16px;border-radius:999px;font-size:13px;font-weight:600}
.article-side{position:sticky;top:100px;display:flex;flex-direction:column;gap:24px}.side-card{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--border);padding:28px}.side-card h4{font-size:17px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:8px}.side-card ul li{padding:12px 0;border-bottom:1px dashed var(--border);font-size:14px}.side-card ul li:last-child{border-bottom:none}.side-card ul a:hover{color:var(--primary)}.side-card.warn{background:linear-gradient(135deg,rgba(255,153,0,.05),rgba(255,77,79,.05));border-color:#ffd9a8}
.not-found{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--border);padding:80px 40px;text-align:center}.not-found h2{font-size:30px;font-weight:800;margin-bottom:12px}.not-found p{color:var(--text-muted);margin-bottom:24px}
.site-footer{background:var(--dark-bg);color:rgba(255,255,255,.75);padding:76px 0 32px;margin-top:40px}.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:60px;margin-bottom:48px}.footer-brand .brand{color:#fff}.footer-brand p{font-size:14px;color:rgba(255,255,255,.6);max-width:320px;line-height:1.8}.footer-col h5{color:#fff;font-size:15px;margin-bottom:20px}.footer-col ul li{margin-bottom:12px}.footer-col ul a{font-size:14px;color:rgba(255,255,255,.6)}.footer-col ul a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:28px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:rgba(255,255,255,.45)}
@media(max-width:1024px){.article-layout{grid-template-columns:1fr}.article-side{position:static}}@media(max-width:768px){.menu-toggle{display:inline-flex}.nav-links{display:none;position:absolute;top:calc(100% + 10px);left:16px;right:16px;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:12px;flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:14px 20px}.page-hero{padding:130px 0 40px}.article-main{padding:28px 22px}.article-header h1{font-size:24px}.footer-grid{grid-template-columns:1fr;gap:30px}}

:root{--primary:#1a56db;--primary-rgb:26,86,219;--primary-dark:#1e40af;--accent:#0ea5a4;--dark-bg:#0b1224;--bg:#f4f6fb;--surface:#fff;--text:#132032;--text-muted:#5b6b7f;--border:#e1e6ef;--radius:14px;--radius-lg:20px;--shadow-sm:0 2px 9px rgba(15,28,46,.07);--shadow:0 8px 30px rgba(15,28,46,.09);--shadow-lg:0 18px 48px rgba(15,28,46,.14);--transition:all .3s ease;--font-main:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif}
*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}img{max-width:100%;display:block}a{text-decoration:none;color:inherit;transition:var(--transition)}ul{list-style:none}button,input{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.site-header{position:fixed;top:16px;left:0;right:0;z-index:1000;padding:0 24px}.dock-nav{max-width:1080px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.88);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.6);border-radius:999px;padding:10px 18px 10px 24px;box-shadow:0 8px 32px rgba(15,28,46,.12)}.brand{font-size:22px;font-weight:800;color:var(--primary);display:inline-flex;align-items:center;gap:8px}.brand::before{content:'';width:10px;height:10px;border-radius:3px;background:linear-gradient(135deg,var(--primary),var(--accent))}.nav-links{display:flex;align-items:center;gap:4px}.nav-links a{padding:8px 16px;border-radius:999px;font-size:15px;font-weight:500;color:var(--text-muted)}.nav-links a:hover{color:var(--primary);background:rgba(26,86,219,.08)}.nav-links a.active{color:var(--primary);background:rgba(26,86,219,.1)}.header-cta{display:inline-flex;align-items:center;gap:6px}.menu-toggle{display:none;background:none;border:1px solid var(--border);border-radius:50%;width:38px;height:38px;font-size:16px;align-items:center;justify-content:center;color:var(--text);cursor:pointer}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:999px;font-size:15px;font-weight:600;border:none;cursor:pointer;transition:var(--transition)}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(var(--primary-rgb),.3)}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px)}.btn-outline{background:transparent;color:var(--text);border:1.5px solid var(--border)}.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.page-hero{position:relative;padding:170px 0 80px;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;color:#fff}.page-hero::before{content:'';position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,14,30,.88),rgba(8,14,30,.45))}.page-hero .container{position:relative;z-index:2}.page-hero h1{font-size:42px;font-weight:800;margin-bottom:14px}.page-hero p{font-size:17px;color:rgba(255,255,255,.8);max-width:640px;line-height:1.8}.breadcrumb{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.65);margin-top:20px}
.section{padding:88px 0}.section-head{margin-bottom:44px}.section-label{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:var(--primary);background:rgba(26,86,219,.08);padding:6px 14px;border-radius:999px;margin-bottom:14px}.section-title{font-size:34px;font-weight:800;line-height:1.25;margin-bottom:12px}.section-sub{color:var(--text-muted);font-size:16px;max-width:640px;line-height:1.8}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.step-item{background:#fff;border-radius:var(--radius-lg);padding:32px 24px;text-align:center;border:1px solid var(--border);transition:var(--transition)}.step-item:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.step-num{display:inline-flex;width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;font-weight:700;font-size:17px;align-items:center;justify-content:center;margin-bottom:16px;box-shadow:0 6px 16px rgba(var(--primary-rgb),.3)}.step-item h3{font-size:17px;margin-bottom:8px}.step-item p{color:var(--text-muted);font-size:14px}
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.guide-card{background:#fff;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);transition:var(--transition)}.guide-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}.guide-card img{width:100%;height:180px;object-fit:cover}.guide-card .body{padding:24px}.guide-card .badge{display:inline-block;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;background:rgba(26,86,219,.08);color:var(--primary);margin-bottom:10px}.guide-card h3{font-size:19px;font-weight:700;margin-bottom:8px}.guide-card p{color:var(--text-muted);font-size:14px;line-height:1.7;margin-bottom:14px}.link-more{color:var(--primary);font-size:14px;font-weight:600}
.faq-wrap{max-width:800px;margin:0 auto}.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;overflow:hidden}.faq-question{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 26px;font-size:16px;font-weight:600;cursor:pointer;background:none;border:none;width:100%;text-align:left;color:var(--text)}.faq-question i{color:var(--primary);font-size:14px;transition:transform .3s}.faq-item.active .faq-question i{transform:rotate(45deg)}.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 26px;color:var(--text-muted);font-size:15px;line-height:1.8}.faq-item.active .faq-answer{max-height:500px;padding:0 26px 22px}
.cta-section{position:relative;padding:90px 0;background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;color:#fff;text-align:center}.cta-section::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(11,18,36,.92),rgba(26,86,219,.7))}.cta-content{position:relative;z-index:2;max-width:680px;margin:0 auto}.cta-content h2{font-size:34px;font-weight:800;margin-bottom:14px}.cta-content p{color:rgba(255,255,255,.8);margin-bottom:30px}.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.site-footer{background:var(--dark-bg);color:rgba(255,255,255,.75);padding:76px 0 32px}.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:60px;margin-bottom:48px}.footer-brand .brand{color:#fff}.footer-brand p{font-size:14px;color:rgba(255,255,255,.6);max-width:320px;line-height:1.8}.footer-col h5{color:#fff;font-size:15px;margin-bottom:20px}.footer-col ul li{margin-bottom:12px}.footer-col ul a{font-size:14px;color:rgba(255,255,255,.6)}.footer-col ul a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:28px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:rgba(255,255,255,.45)}
@media(max-width:1024px){.steps-grid{grid-template-columns:repeat(2,1fr)}.guide-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:768px){.menu-toggle{display:inline-flex}.nav-links{display:none;position:absolute;top:calc(100% + 10px);left:16px;right:16px;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:12px;flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:14px 20px}.page-hero{padding:130px 0 50px}.page-hero h1{font-size:30px}.section{padding:60px 0}.section-title{font-size:28px}.footer-grid{grid-template-columns:1fr;gap:30px}}@media(max-width:520px){.steps-grid{grid-template-columns:1fr}.guide-grid{grid-template-columns:1fr}.cta-content h2{font-size:26px}.container{padding:0 18px}}

:root{--primary:#1a56db;--primary-rgb:26,86,219;--primary-dark:#1e40af;--accent:#0ea5a4;--dark-bg:#0b1224;--bg:#f4f6fb;--surface:#fff;--text:#132032;--text-muted:#5b6b7f;--border:#e1e6ef;--radius:14px;--radius-lg:20px;--shadow-sm:0 2px 9px rgba(15,28,46,.07);--shadow:0 8px 30px rgba(15,28,46,.09);--shadow-lg:0 18px 48px rgba(15,28,46,.14);--transition:all .3s ease;--font-main:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif}
*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}img{max-width:100%;display:block}a{text-decoration:none;color:inherit;transition:var(--transition)}ul{list-style:none}button,input{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.site-header{position:fixed;top:16px;left:0;right:0;z-index:1000;padding:0 24px}.dock-nav{max-width:1080px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.88);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.6);border-radius:999px;padding:10px 18px 10px 24px;box-shadow:0 8px 32px rgba(15,28,46,.12)}.brand{font-size:22px;font-weight:800;color:var(--primary);display:inline-flex;align-items:center;gap:8px}.brand::before{content:'';width:10px;height:10px;border-radius:3px;background:linear-gradient(135deg,var(--primary),var(--accent))}.nav-links{display:flex;align-items:center;gap:4px}.nav-links a{padding:8px 16px;border-radius:999px;font-size:15px;font-weight:500;color:var(--text-muted)}.nav-links a:hover{color:var(--primary);background:rgba(26,86,219,.08)}.nav-links a.active{color:var(--primary);background:rgba(26,86,219,.1)}.header-cta{display:inline-flex;align-items:center;gap:6px}.menu-toggle{display:none;background:none;border:1px solid var(--border);border-radius:50%;width:38px;height:38px;font-size:16px;align-items:center;justify-content:center;color:var(--text);cursor:pointer}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:999px;font-size:15px;font-weight:600;border:none;cursor:pointer;transition:var(--transition)}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(var(--primary-rgb),.3)}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px)}.btn-outline{background:transparent;color:var(--text);border:1.5px solid var(--border)}.btn-outline:hover{border-color:var(--primary);color:var(--primary)}.btn-light{background:#fff;color:var(--primary)}.btn-light:hover{transform:translateY(-2px)}
.page-hero{position:relative;padding:170px 0 80px;background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;color:#fff}.page-hero::before{content:'';position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,14,30,.88),rgba(8,14,30,.45))}.page-hero .container{position:relative;z-index:2}.page-hero h1{font-size:42px;font-weight:800;margin-bottom:14px}.page-hero p{font-size:17px;color:rgba(255,255,255,.8);max-width:640px;line-height:1.8}.breadcrumb{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.65);margin-top:20px}
.section{padding:88px 0}.section-head{margin-bottom:44px}.section-label{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:var(--primary);background:rgba(26,86,219,.08);padding:6px 14px;border-radius:999px;margin-bottom:14px}.section-title{font-size:34px;font-weight:800;line-height:1.25;margin-bottom:12px}.section-sub{color:var(--text-muted);font-size:16px;max-width:640px;line-height:1.8}
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.feature-card{background:#fff;border-radius:var(--radius-lg);padding:32px 24px;border:1px solid var(--border);transition:var(--transition);text-align:center}.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:transparent}.feature-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,rgba(26,86,219,.1),rgba(14,165,164,.1));display:flex;align-items:center;justify-content:center;font-size:22px;color:var(--primary);margin:0 auto 18px}.feature-card h3{font-size:17px;font-weight:700;margin-bottom:8px}.feature-card p{color:var(--text-muted);font-size:14px;line-height:1.7}
.verify-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.verify-card{background:#fff;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);transition:var(--transition)}.verify-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}.verify-card img{width:100%;height:170px;object-fit:cover}.verify-card .body{padding:26px}.verify-card .badge{display:inline-block;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;background:rgba(14,165,164,.1);color:var(--accent);margin-bottom:10px}.verify-card h3{font-size:19px;font-weight:700;margin-bottom:8px}.verify-card p{color:var(--text-muted);font-size:14px;line-height:1.7}
.metrics{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:20px 0}.metric-item{text-align:center;padding:16px 8px;border-right:1px solid var(--border)}.metric-item:last-child{border-right:none}.metric-num{font-size:38px;font-weight:800;color:var(--primary);line-height:1.2;margin-bottom:6px}.metric-label{color:var(--text-muted);font-size:14px}
.tips-list{max-width:820px;margin:0 auto}.tip-item{display:flex;align-items:flex-start;gap:18px;background:#fff;border-radius:var(--radius);border:1px solid var(--border);padding:22px 26px;margin-bottom:14px}.tip-icon{width:38px;height:38px;border-radius:50%;background:rgba(26,86,219,.08);color:var(--primary);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:16px}.tip-item h4{font-size:16px;font-weight:700;margin-bottom:4px}.tip-item p{color:var(--text-muted);font-size:14px;line-height:1.7}
.cta-section{position:relative;padding:90px 0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff;text-align:center}.cta-section::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(11,18,36,.92),rgba(14,165,164,.6))}.cta-content{position:relative;z-index:2;max-width:680px;margin:0 auto}.cta-content h2{font-size:34px;font-weight:800;margin-bottom:14px}.cta-content p{color:rgba(255,255,255,.8);margin-bottom:30px}.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.site-footer{background:var(--dark-bg);color:rgba(255,255,255,.75);padding:76px 0 32px}.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:60px;margin-bottom:48px}.footer-brand .brand{color:#fff}.footer-brand p{font-size:14px;color:rgba(255,255,255,.6);max-width:320px;line-height:1.8}.footer-col h5{color:#fff;font-size:15px;margin-bottom:20px}.footer-col ul li{margin-bottom:12px}.footer-col ul a{font-size:14px;color:rgba(255,255,255,.6)}.footer-col ul a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:28px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:rgba(255,255,255,.45)}
@media(max-width:1024px){.feature-grid{grid-template-columns:repeat(2,1fr)}.metrics-grid{grid-template-columns:repeat(2,1fr)}.verify-grid{grid-template-columns:repeat(2,1fr)}.metric-item:nth-child(2){border-right:none}.metric-item:nth-child(3),.metric-item:nth-child(4){border-top:1px solid var(--border)}}@media(max-width:768px){.menu-toggle{display:inline-flex}.nav-links{display:none;position:absolute;top:calc(100% + 10px);left:16px;right:16px;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:12px;flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:14px 20px}.page-hero{padding:130px 0 50px}.page-hero h1{font-size:30px}.section{padding:60px 0}.section-title{font-size:28px}.footer-grid{grid-template-columns:1fr;gap:30px}.metric-item{border-right:none;border-bottom:1px solid var(--border)}.metric-item:last-child{border-bottom:none}}@media(max-width:520px){.feature-grid{grid-template-columns:1fr}.verify-grid{grid-template-columns:1fr}.metrics-grid{grid-template-columns:1fr}.cta-content h2{font-size:26px}.container{padding:0 18px}}

:root{--primary:#1a56db;--primary-rgb:26,86,219;--primary-dark:#1e40af;--accent:#0ea5a4;--dark-bg:#0b1224;--bg:#f4f6fb;--surface:#fff;--text:#132032;--text-muted:#5b6b7f;--border:#e1e6ef;--radius:14px;--radius-lg:20px;--shadow-sm:0 2px 9px rgba(15,28,46,.07);--shadow:0 8px 30px rgba(15,28,46,.09);--shadow-lg:0 18px 48px rgba(15,28,46,.14);--transition:all .3s ease;--font-main:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif}
*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}img{max-width:100%;display:block}a{text-decoration:none;color:inherit;transition:var(--transition)}ul{list-style:none}button,input{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.site-header{position:fixed;top:16px;left:0;right:0;z-index:1000;padding:0 24px}.dock-nav{max-width:1080px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.88);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.6);border-radius:999px;padding:10px 18px 10px 24px;box-shadow:0 8px 32px rgba(15,28,46,.12)}.brand{font-size:22px;font-weight:800;color:var(--primary);display:inline-flex;align-items:center;gap:8px}.brand::before{content:'';width:10px;height:10px;border-radius:3px;background:linear-gradient(135deg,var(--primary),var(--accent))}.nav-links{display:flex;align-items:center;gap:4px}.nav-links a{padding:8px 16px;border-radius:999px;font-size:15px;font-weight:500;color:var(--text-muted)}.nav-links a:hover{color:var(--primary);background:rgba(26,86,219,.08)}.nav-links a.active{color:var(--primary);background:rgba(26,86,219,.1)}.header-cta{display:inline-flex;align-items:center;gap:6px}.menu-toggle{display:none;background:none;border:1px solid var(--border);border-radius:50%;width:38px;height:38px;font-size:16px;align-items:center;justify-content:center;color:var(--text);cursor:pointer}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:999px;font-size:15px;font-weight:600;border:none;cursor:pointer;transition:var(--transition)}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(var(--primary-rgb),.3)}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px)}.btn-outline{background:transparent;color:var(--text);border:1.5px solid var(--border)}.btn-outline:hover{border-color:var(--primary);color:var(--primary)}.btn-light{background:#fff;color:var(--primary)}.btn-light:hover{transform:translateY(-2px)}
.page-hero{position:relative;padding:170px 0 80px;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff}.page-hero::before{content:'';position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,14,30,.88),rgba(8,14,30,.45))}.page-hero .container{position:relative;z-index:2}.page-hero h1{font-size:42px;font-weight:800;margin-bottom:14px}.page-hero p{font-size:17px;color:rgba(255,255,255,.8);max-width:640px;line-height:1.8}.breadcrumb{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.65);margin-top:20px}
.section{padding:88px 0}.section-head{margin-bottom:44px}.section-label{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:var(--primary);background:rgba(26,86,219,.08);padding:6px 14px;border-radius:999px;margin-bottom:14px}.section-title{font-size:34px;font-weight:800;line-height:1.25;margin-bottom:12px}.section-sub{color:var(--text-muted);font-size:16px;max-width:640px;line-height:1.8}
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.cat-item{background:#fff;border-radius:var(--radius-lg);padding:30px 24px;text-align:center;border:1px solid var(--border);transition:var(--transition)}.cat-item:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.cat-icon{width:50px;height:50px;border-radius:14px;background:linear-gradient(135deg,rgba(26,86,219,.1),rgba(14,165,164,.1));display:flex;align-items:center;justify-content:center;margin:0 auto 14px;font-size:20px;color:var(--primary)}.cat-item h3{font-size:16px;font-weight:700;margin-bottom:4px}.cat-item span{color:var(--text-muted);font-size:13px}
.faq-wrap{max-width:840px;margin:0 auto}.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;overflow:hidden;transition:var(--transition)}.faq-item:hover{box-shadow:var(--shadow-sm)}.faq-question{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 28px;font-size:16px;font-weight:600;cursor:pointer;background:none;border:none;width:100%;text-align:left;color:var(--text)}.faq-question i{color:var(--primary);font-size:14px;transition:transform .3s}.faq-item.active .faq-question i{transform:rotate(45deg)}.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 28px;color:var(--text-muted);font-size:15px;line-height:1.8}.faq-item.active .faq-answer{max-height:600px;padding:0 28px 24px}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.contact-card{background:#fff;border-radius:var(--radius-lg);padding:36px 28px;text-align:center;border:1px solid var(--border);transition:var(--transition)}.contact-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.contact-card i{font-size:30px;color:var(--primary);margin-bottom:14px}.contact-card h3{font-size:18px;font-weight:700;margin-bottom:6px}.contact-card p{color:var(--text-muted);font-size:14px;margin-bottom:14px}
.cta-section{position:relative;padding:90px 0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;color:#fff;text-align:center}.cta-section::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(11,18,36,.92),rgba(26,86,219,.7))}.cta-content{position:relative;z-index:2;max-width:680px;margin:0 auto}.cta-content h2{font-size:34px;font-weight:800;margin-bottom:14px}.cta-content p{color:rgba(255,255,255,.8);margin-bottom:30px}.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.site-footer{background:var(--dark-bg);color:rgba(255,255,255,.75);padding:76px 0 32px}.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:60px;margin-bottom:48px}.footer-brand .brand{color:#fff}.footer-brand p{font-size:14px;color:rgba(255,255,255,.6);max-width:320px;line-height:1.8}.footer-col h5{color:#fff;font-size:15px;margin-bottom:20px}.footer-col ul li{margin-bottom:12px}.footer-col ul a{font-size:14px;color:rgba(255,255,255,.6)}.footer-col ul a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:28px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:rgba(255,255,255,.45)}
@media(max-width:1024px){.cat-grid{grid-template-columns:repeat(2,1fr)}.contact-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:768px){.menu-toggle{display:inline-flex}.nav-links{display:none;position:absolute;top:calc(100% + 10px);left:16px;right:16px;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:12px;flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:14px 20px}.page-hero{padding:130px 0 50px}.page-hero h1{font-size:30px}.section{padding:60px 0}.section-title{font-size:28px}.contact-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:30px}}@media(max-width:520px){.cat-grid{grid-template-columns:1fr}.cta-content h2{font-size:26px}.container{padding:0 18px}}

/* roulang page: category1 */
/* ========== 设计变量 ========== */
  :root {
    --primary: #1a6cf5;
    --primary-dark: #0d4fa8;
    --primary-light: #e8f1fe;
    --accent: #00b386;
    --accent-light: #e6f7f1;
    --dark-bg: #0b1f3a;
    --dark-bg-2: #122a4d;
    --body-bg: #f6f8fb;
    --white: #ffffff;
    --text: #1e2a3b;
    --text-light: #5a6b80;
    --text-muted: #8a9bad;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 999px;
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 40px;
    --space-xl: 64px;
    --space-2xl: 96px;
    --transition: 0.25s ease;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  }

  /* ========== 基础 Reset ========== */
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

  html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

  body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--body-bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  img { max-width: 100%; height: auto; display: block; border: 0; }
  a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
  a:hover { color: var(--primary-dark); }
  a:focus-visible { outline: 3px solid rgba(26, 108, 245, 0.4); outline-offset: 2px; border-radius: 4px; }
  button { cursor: pointer; font-family: inherit; }
  ul, ol { list-style: none; }

  /* ========== 容器 ========== */
  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
  }

  /* ========== 顶部 Dock 导航 ========== */
  .site-header {
    position: sticky;
    top: 16px;
    z-index: 1000;
    padding: 0 20px;
    pointer-events: none;
  }

  .dock-nav {
    max-width: 1140px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px 10px 24px;
    pointer-events: auto;
    transition: box-shadow var(--transition);
  }
  .dock-nav:hover { box-shadow: var(--shadow-lg); }

  .brand {
    font-size: 22px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.01em;
    line-height: 1.2;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .brand .brand-dot {
    width: 8px; height: 8px;
    background: var(--primary);
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 0 3px rgba(26,108,245,0.2);
  }

  .main-nav ul {
    display: flex;
    align-items: center;
    gap: 4px;
    margin: 0;
  }
  .main-nav ul li { margin: 0; }
  .main-nav ul li a {
    display: inline-block;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: 15px;
    font-weight: 500;
    color: var(--text-light);
    transition: all var(--transition);
    position: relative;
  }
  .main-nav ul li a:hover { color: var(--primary); background: var(--primary-light); }
  .main-nav ul li a.active { color: var(--primary); background: rgba(26,108,245,0.12); font-weight: 600; }
  .main-nav ul li a.active::after {
    content: '';
    display: block;
    width: 16px; height: 3px;
    background: var(--primary);
    border-radius: var(--radius-full);
    margin: 4px auto 0;
  }

  .nav-actions { display: flex; align-items: center; gap: 12px; }

  .btn-login-nav {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: var(--white) !important;
    padding: 9px 20px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    border: none;
    transition: all var(--transition);
    box-shadow: 0 4px 12px rgba(26,108,245,0.28);
  }
  .btn-login-nav:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(26,108,245,0.32); }
  .btn-login-nav i { font-size: 13px; }

  .menu-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    font-size: 18px;
    color: var(--text);
  }

  /* ========== 面包屑 ========== */
  .breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    color: rgba(255,255,255,0.75);
    margin-bottom: 18px;
  }
  .breadcrumb a { color: rgba(255,255,255,0.75); transition: color var(--transition); }
  .breadcrumb a:hover { color: #ffffff; }
  .breadcrumb i { font-size: 11px; color: rgba(255,255,255,0.45); }
  .breadcrumb .current { color: #ffffff; font-weight: 600; }

  /* ========== 页面 Hero / Banner ========== */
  .page-hero {
    position: relative;
    padding: 96px 0 72px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--white);
    overflow: hidden;
  }
  .page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(11,31,58,0.88) 0%, rgba(13,53,104,0.74) 50%, rgba(11,31,58,0.65) 100%);
  }
  .page-hero .container { position: relative; z-index: 2; }

  .page-hero h1 {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 16px;
    color: var(--white);
    letter-spacing: -0.02em;
  }
  .page-hero h1 .highlight {
    background: linear-gradient(90deg, #60a5fa, #34d399);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }
  .page-hero .hero-desc {
    font-size: 17px;
    line-height: 1.8;
    color: rgba(255,255,255,0.82);
    max-width: 640px;
    margin-bottom: 28px;
  }

  .hero-tags { display: flex; flex-wrap: wrap; gap: 10px; }
  .hero-tags span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,0.14);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-full);
    padding: 6px 14px;
    font-size: 13px;
    color: rgba(255,255,255,0.9);
    backdrop-filter: blur(4px);
  }
  .hero-tags i { font-size: 12px; color: #60a5fa; }

  /* ========== 板块通用 ========== */
  .section { padding: var(--space-2xl) 0; }
  .section-alt { background: var(--white); }
  .section-gray { background: var(--body-bg); }
  .section-dark { background: var(--dark-bg); color: var(--white); }

  .section-head { text-align: center; max-width: 720px; margin: 0 auto var(--space-xl); }
  .section-head .eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-light);
    padding: 5px 16px;
    border-radius: var(--radius-full);
    letter-spacing: 0.02em;
    margin-bottom: 14px;
    text-transform: uppercase;
  }
  .section-head h2 { font-size: 34px; font-weight: 800; color: var(--text); line-height: 1.3; margin-bottom: 12px; letter-spacing: -0.01em; }
  .section-head p { font-size: 16px; color: var(--text-light); line-height: 1.75; }

  .section-dark .section-head h2 { color: var(--white); }
  .section-dark .section-head p { color: rgba(255,255,255,0.7); }
  .section-dark .section-head .eyebrow { background: rgba(255,255,255,0.12); color: #93c5fd; }

  /* ========== 登录方式卡片 ========== */
  .method-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    height: 100%;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
  }
  .method-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity var(--transition);
  }
  .method-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: rgba(26,108,245,0.3); }
  .method-card:hover::before { opacity: 1; }

  .method-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 18px;
  }
  .method-card:nth-child(2) .method-icon { background: var(--accent-light); color: var(--accent); }
  .method-card:nth-child(3) .method-icon { background: #fef3c7; color: #d97706; }
  .method-card:nth-child(4) .method-icon { background: #ede9fe; color: #7c3aed; }

  .method-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
  .method-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }
  .method-card .method-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    background: var(--primary-light);
    color: var(--primary);
    margin-top: 12px;
  }

  /* ========== 登录流程 Steps ========== */
  .steps-wrap { position: relative; }
  .steps-wrap::before {
    content: '';
    position: absolute;
    top: 44px;
    left: 12%;
    right: 12%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary), var(--primary-light));
    z-index: 0;
  }
  .step-item { position: relative; z-index: 1; text-align: center; padding: 0 10px; }
  .step-num {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: var(--white);
    border: 2px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 800;
    color: var(--primary);
    box-shadow: 0 4px 16px rgba(26,108,245,0.2);
    transition: all var(--transition);
  }
  .step-item:hover .step-num { background: var(--primary); color: var(--white); }
  .step-item h4 { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
  .step-item p { font-size: 14px; color: var(--text-light); line-height: 1.65; }

  /* ========== 内容场景卡片 ========== */
  .scene-card {
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    overflow: hidden;
    height: 100%;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
  }
  .scene-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }

  .scene-img { position: relative; aspect-ratio: 16 / 10; overflow: hidden; }
  .scene-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
  .scene-card:hover .scene-img img { transform: scale(1.04); }
  .scene-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(11,31,58,0.35));
  }
  .scene-img .scene-label {
    position: absolute;
    bottom: 14px;
    left: 14px;
    z-index: 2;
    background: rgba(255,255,255,0.92);
    color: var(--text);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: var(--radius-full);
  }
  .scene-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
  .scene-body h3 { font-size: 17px; font-weight: 700; color: var(--text); margin-bottom: 10px; }
  .scene-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; flex: 1; }
  .scene-body .scene-link {
    margin-top: 16px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
  }
  .scene-body .scene-link i { font-size: 12px; transition: transform var(--transition); }
  .scene-body .scene-link:hover i { transform: translateX(4px); }

  /* ========== 安全提示 ========== */
  .tip-item {
    display: flex;
    gap: 16px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
    padding: 24px;
    height: 100%;
    transition: all var(--transition);
  }
  .tip-item:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.2); transform: translateY(-2px); }
  .tip-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(96,165,250,0.2);
    color: #93c5fd;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
  }
  .tip-item h4 { color: var(--white); font-size: 15px; font-weight: 700; margin-bottom: 6px; }
  .tip-item p { color: rgba(255,255,255,0.7); font-size: 13.5px; line-height: 1.65; }

  /* ========== 数据统计 ========== */
  .stat-item { text-align: center; padding: 20px; }
  .stat-num {
    font-size: 42px;
    font-weight: 800;
    color: var(--white);
    line-height: 1.2;
    letter-spacing: -0.02em;
  }
  .stat-num span { color: #60a5fa; }
  .stat-label { font-size: 14px; color: rgba(255,255,255,0.6); margin-top: 6px; }

  /* ========== FAQ 手风琴 ========== */
  .faq-wrap { max-width: 860px; margin: 0 auto; }

  .accordion {
    background: transparent;
    margin: 0;
  }
  .accordion-item {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    transition: all var(--transition);
  }
  .accordion-item.is-active { border-color: rgba(26,108,245,0.35); box-shadow: var(--shadow-sm); }
  .accordion-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    background: var(--white);
    line-height: 1.5;
  }
  .accordion-title::after {
    content: "\f078";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 13px;
    color: var(--text-muted);
    transition: transform var(--transition);
    flex-shrink: 0;
  }
  .accordion-item.is-active .accordion-title::after { transform: rotate(180deg); color: var(--primary); }
  .accordion-title:hover { background: #fafbfc; }
  .accordion-content { padding: 0 24px 24px; border-top: 1px solid var(--border); color: var(--text-light); font-size: 14.5px; line-height: 1.8; }
  .accordion-content p { padding: 16px 0 0; }

  /* ========== CTA 区块 ========== */
  .cta-section {
    position: relative;
    padding: 80px 0;
    background-size: cover;
    background-position: center;
  }
  .cta-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(13,64,128,0.92), rgba(26,108,245,0.85));
    z-index: 1;
  }
  .cta-inner { position: relative; z-index: 2; text-align: center; max-width: 640px; margin: 0 auto; }
  .cta-inner h2 { font-size: 34px; font-weight: 800; color: var(--white); margin-bottom: 16px; }
  .cta-inner p { font-size: 16px; color: rgba(255,255,255,0.8); margin-bottom: 32px; line-height: 1.7; }
  .cta-btns { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--white);
    color: var(--primary) !important;
    padding: 14px 30px;
    border-radius: var(--radius-full);
    font-size: 15px;
    font-weight: 700;
    transition: all var(--transition);
    box-shadow: 0 8px 24px rgba(0,0,0,0.18);
  }
  .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0,0,0,0.24); }

  .btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.12);
    color: var(--white) !important;
    padding: 14px 30px;
    border-radius: var(--radius-full);
    font-size: 15px;
    font-weight: 600;
    border: 1px solid rgba(255,255,255,0.4);
    transition: all var(--transition);
    backdrop-filter: blur(6px);
  }
  .btn-ghost:hover { background: rgba(255,255,255,0.2); transform: translateY(-2px); }

  /* ========== 页脚 ========== */
  .site-footer {
    background: var(--dark-bg);
    color: rgba(255,255,255,0.7);
    padding: 64px 0 0;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  .footer-brand .brand { color: var(--white); font-size: 24px; margin-bottom: 12px; }
  .footer-brand p { font-size: 14px; line-height: 1.75; max-width: 340px; }
  .footer-col h5 {
    color: var(--white);
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 16px;
    position: relative;
    padding-bottom: 10px;
  }
  .footer-col h5::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 3px;
    background: var(--primary);
    border-radius: var(--radius-full);
  }
  .footer-col ul { display: flex; flex-direction: column; gap: 8px; }
  .footer-col ul li a {
    color: rgba(255,255,255,0.6);
    font-size: 14px;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
  .footer-col ul li a:hover { color: var(--white); padding-left: 4px; }
  .footer-bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 24px 0;
  }
  .footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.5); }
  .footer-bottom .domain { color: rgba(255,255,255,0.3); }

  /* ========== 移动端适配 ========== */
  @media screen and (max-width: 1024px) {
    .container { padding: 0 20px; }
    .page-hero { padding: 80px 0 56px; }
    .page-hero h1 { font-size: 36px; }
    .section-head h2 { font-size: 30px; }
    .steps-wrap::before { left: 8%; right: 8%; }
    .footer-grid { gap: 32px; }
  }

  @media screen and (max-width: 768px) {
    .site-header { top: 10px; }
    .dock-nav { flex-wrap: wrap; border-radius: 20px; padding: 12px 16px; }
    .main-nav {
      display: none;
      width: 100%;
      margin-top: 12px;
      padding-top: 12px;
      border-top: 1px solid var(--border);
    }
    .main-nav.open { display: block; }
    .main-nav ul { flex-direction: column; align-items: stretch; gap: 2px; }
    .main-nav ul li a { display: block; padding: 12px 16px; border-radius: 10px; }
    .main-nav ul li a.active::after { margin: 4px 0 0; }
    .menu-toggle { display: block; }
    .nav-actions .btn-login-nav { display: none; }

    .page-hero { padding: 72px 0 48px; }
    .page-hero h1 { font-size: 30px; }
    .hero-tags { flex-wrap: wrap; }
    .section { padding: 56px 0; }
    .section-head { margin-bottom: 40px; }
    .section-head h2 { font-size: 26px; }
    .steps-wrap::before { display: none; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .cta-inner h2 { font-size: 28px; }
  }

  @media screen and (max-width: 520px) {
    .container { padding: 0 16px; }
    .page-hero { padding: 60px 0 40px; }
    .page-hero h1 { font-size: 26px; }
    .section { padding: 48px 0; }
    .section-head h2 { font-size: 24px; }
    .method-card { padding: 24px 18px; }
    .tip-item { flex-direction: column; gap: 12px; }
    .btn-primary, .btn-ghost { width: 100%; justify-content: center; }
  }

  /* 滚动至页面顶部按钮（移动端助手） */
  .back-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition);
    z-index: 999;
  }
  .back-top:hover { background: var(--primary-dark); transform: translateY(-3px); }

  /* 清空 Foundation 默认对按钮圆角的影响 */
  .button, .accordion-title { font-family: inherit; }

/* roulang page: article */
:root {
      --primary: #1648d8;
      --primary-dark: #0e3aae;
      --primary-light: #e8edfd;
      --accent: #f5a524;
      --accent-dark: #d98d12;
      --navy: #0a1836;
      --navy-light: #132552;
      --bg: #f4f7fc;
      --surface: #ffffff;
      --text: #101c36;
      --text-weak: #5d6b85;
      --border: #e6eaf2;
      --radius: 14px;
      --radius-sm: 10px;
      --radius-lg: 22px;
      --shadow-sm: 0 2px 10px rgba(16, 28, 54, 0.06);
      --shadow-md: 0 12px 32px rgba(16, 28, 54, 0.10);
      --shadow-lg: 0 24px 60px rgba(16, 28, 54, 0.16);
      --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; }
    img { max-width: 100%; display: block; }
    a { text-decoration: none; color: inherit; }
    ul, ol { list-style: none; }
    button, input, select, textarea { font-family: inherit; }
    .progress-bar { position: fixed; top: 0; left: 0; height: 3px; width: 0; background: linear-gradient(90deg, var(--primary), var(--accent)); z-index: 999; border-radius: 0 4px 4px 0; transition: width 0.12s linear; }
    .container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
    .section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
    .section-head h2 { font-size: 34px; font-weight: 800; letter-spacing: -0.02em; line-height: 1.3; }
    .section-head p { color: var(--text-weak); font-size: 15.5px; margin-top: 10px; }
    .section-head.light { color: #fff; }
    .section-head.light p { color: rgba(255,255,255,0.7); }

    .site-header {
      position: sticky; top: 0; z-index: 300; padding: 16px 20px 0;
      pointer-events: none;
    }
    .dock-nav {
      pointer-events: auto;
      max-width: 1120px; margin: 0 auto;
      display: flex; align-items: center; justify-content: space-between;
      background: rgba(255,255,255,0.86);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border: 1px solid rgba(255,255,255,0.65);
      border-radius: 60px;
      padding: 9px 12px 9px 24px;
      box-shadow: 0 8px 32px rgba(10, 24, 54, 0.10);
      transition: box-shadow 0.3s ease;
    }
    .dock-nav:hover { box-shadow: 0 12px 40px rgba(10, 24, 54, 0.14); }
    .brand-logo { font-size: 23px; font-weight: 800; letter-spacing: -0.03em; color: var(--text); display: inline-flex; align-items: center; gap: 2px; }
    .brand-logo span { color: var(--primary); }
    .nav-menu { display: flex; align-items: center; gap: 2px; }
    .nav-menu a {
      display: inline-block; padding: 8px 18px; border-radius: 40px;
      font-size: 14.5px; font-weight: 600; color: var(--text-weak);
      transition: all 0.25s ease;
    }
    .nav-menu a:hover { background: var(--primary-light); color: var(--primary); transform: translateY(-1px); }
    .nav-menu a.active { background: var(--primary); color: #fff; box-shadow: 0 6px 18px rgba(22, 72, 216, 0.28); }
    .nav-cta-wrap { display: flex; align-items: center; gap: 10px; }
    .nav-cta {
      display: inline-flex; align-items: center; gap: 8px;
      background: var(--navy); color: #fff; border-radius: 40px;
      padding: 9px 20px; font-size: 14px; font-weight: 700;
      transition: all 0.25s ease;
    }
    .nav-cta:hover { background: var(--primary); transform: translateY(-2px); box-shadow: 0 8px 22px rgba(22, 72, 216, 0.35); }
    .nav-cta i { font-size: 13px; }
    .menu-toggle { display: none; background: none; border: 0; font-size: 21px; color: var(--text); cursor: pointer; padding: 6px 10px; border-radius: 10px; transition: background 0.2s; }
    .menu-toggle:hover { background: var(--primary-light); }

    .article-hero {
      position: relative;
      margin-top: -76px;
      padding: 150px 0 96px;
      background:
        linear-gradient(135deg, rgba(10, 24, 54, 0.95) 0%, rgba(16, 42, 110, 0.92) 50%, rgba(22, 72, 216, 0.84) 100%),
        url('/assets/images/backpic/back-1.png') center / cover no-repeat;
      color: #fff;
      border-radius: 0 0 32px 32px;
    }
    .breadcrumb { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 13.5px; color: rgba(255,255,255,0.72); }
    .breadcrumb a { color: rgba(255,255,255,0.72); transition: color 0.2s; }
    .breadcrumb a:hover { color: #fff; }
    .breadcrumb i { font-size: 11px; opacity: 0.55; }
    .breadcrumb span:last-child { color: var(--accent); font-weight: 600; }
    .article-title { font-size: 40px; line-height: 1.28; font-weight: 800; max-width: 900px; margin-top: 20px; letter-spacing: -0.02em; text-shadow: 0 2px 20px rgba(0,0,0,0.12); }
    .article-meta { display: flex; flex-wrap: wrap; gap: 12px 24px; margin-top: 26px; font-size: 14px; color: rgba(255,255,255,0.82); }
    .meta-item { display: inline-flex; align-items: center; gap: 7px; }
    .meta-item i { color: var(--accent); font-size: 13px; }
    .meta-badge { display: inline-flex; align-items: center; gap: 6px; background: rgba(255,255,255,0.14); border: 1px solid rgba(255,255,255,0.2); padding: 4px 12px; border-radius: 40px; font-size: 12.5px; color: #fff; }

    .article-wrap { padding: 56px 0 40px; }
    .article-grid { align-items: flex-start; }
    .article-card {
      background: var(--surface); border-radius: var(--radius-lg);
      border: 1px solid var(--border); box-shadow: var(--shadow-sm);
      padding: 44px 46px; margin-bottom: 30px;
      transition: box-shadow 0.3s ease;
    }
    .article-card:hover { box-shadow: var(--shadow-md); }
    .article-cover { border-radius: var(--radius); overflow: hidden; margin-bottom: 34px; }
    .article-cover img { width: 100%; height: auto; aspect-ratio: 16 / 7; object-fit: cover; transition: transform 0.6s ease; }
    .article-card:hover .article-cover img { transform: scale(1.02); }
    .article-content { font-size: 16.5px; line-height: 1.95; color: #25314d; }
    .article-content p { margin-bottom: 22px; }
    .article-content h2 { font-size: 24px; font-weight: 800; margin: 38px 0 16px; color: var(--text); line-height: 1.4; }
    .article-content h3 { font-size: 19px; font-weight: 700; margin: 30px 0 12px; color: var(--text); }
    .article-content h4 { font-size: 16.5px; font-weight: 700; margin: 24px 0 10px; color: var(--text); }
    .article-content ul, .article-content ol { margin: 14px 0 24px; padding-left: 26px; }
    .article-content ul li { list-style: disc; margin-bottom: 8px; }
    .article-content ol li { list-style: decimal; margin-bottom: 8px; }
    .article-content li::marker { color: var(--primary); }
    .article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; transition: opacity 0.2s; }
    .article-content a:hover { opacity: 0.75; }
    .article-content blockquote {
      border-left: 4px solid var(--primary); background: var(--primary-light);
      padding: 18px 24px; border-radius: 0 var(--radius) var(--radius) 0;
      margin: 26px 0; font-size: 15.5px; color: #1d2b4d;
    }
    .article-content img { border-radius: var(--radius); margin: 26px auto; }
    .article-content figure { margin: 26px 0; text-align: center; }
    .article-content figcaption { font-size: 13px; color: var(--text-weak); margin-top: 10px; }
    .article-content table { width: 100%; border-collapse: collapse; margin: 26px 0; font-size: 14.5px; }
    .article-content th { background: var(--navy); color: #fff; font-weight: 700; text-align: left; }
    .article-content th, .article-content td { border: 1px solid var(--border); padding: 11px 16px; }
    .article-content tr:nth-child(even) { background: #f8fafe; }
    .article-content code { background: #eef1f7; padding: 2px 8px; border-radius: 6px; font-size: 14px; }
    .article-content hr { border: 0; border-top: 1px solid var(--border); margin: 36px 0; }
    .article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; padding-top: 26px; border-top: 1px solid var(--border); }
    .tag-item { background: var(--bg); border: 1px solid var(--border); border-radius: 40px; padding: 5px 16px; font-size: 13px; color: var(--text-weak); transition: all 0.2s; }
    .tag-item:hover { background: var(--primary-light); border-color: var(--primary); color: var(--primary); }
    .article-share { display: flex; align-items: center; gap: 10px; margin-top: 26px; padding-top: 24px; border-top: 1px solid var(--border); }
    .article-share > span { font-size: 14px; color: var(--text-weak); font-weight: 600; }
    .article-share a {
      width: 38px; height: 38px; border-radius: 50%;
      background: var(--bg); border: 1px solid var(--border);
      display: inline-flex; align-items: center; justify-content: center;
      color: var(--text-weak); font-size: 15px; transition: all 0.25s;
    }
    .article-share a:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-3px); box-shadow: 0 6px 16px rgba(22, 72, 216, 0.3); }
    .author-card {
      display: flex; gap: 18px; align-items: flex-start;
      background: linear-gradient(135deg, var(--bg), #fff);
      border: 1px solid var(--border); border-radius: var(--radius);
      padding: 24px 28px; margin-top: 34px;
    }
    .author-avatar {
      width: 54px; height: 54px; border-radius: 50%; flex-shrink: 0;
      background: linear-gradient(135deg, var(--primary), #7a9aff);
      display: flex; align-items: center; justify-content: center;
      color: #fff; font-size: 22px; box-shadow: 0 8px 20px rgba(22, 72, 216, 0.3);
    }
    .author-name { font-weight: 800; font-size: 16px; color: var(--text); }
    .author-desc { font-size: 14px; color: var(--text-weak); margin-top: 6px; line-height: 1.65; }

    .not-found-box { text-align: center; padding: 70px 20px; }
    .not-found-box i { font-size: 56px; color: var(--border); display: block; margin-bottom: 20px; }
    .not-found-box h2 { font-size: 28px; font-weight: 800; margin-bottom: 12px; }
    .not-found-box p { color: var(--text-weak); margin-bottom: 26px; font-size: 15px; }
    .btn-main {
      display: inline-flex; align-items: center; gap: 10px;
      background: var(--primary); color: #fff; border-radius: 40px;
      padding: 13px 30px; font-weight: 700; font-size: 15px;
      border: 0; cursor: pointer; transition: all 0.25s;
      box-shadow: 0 10px 28px rgba(22, 72, 216, 0.3);
    }
    .btn-main:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 16px 36px rgba(22, 72, 216, 0.4); }
    .btn-main:focus-visible, .nav-cta:focus-visible, .nav-menu a:focus-visible, .article-share a:focus-visible { outline: 3px solid rgba(245, 165, 36, 0.55); outline-offset: 2px; }

    .article-sidebar { position: sticky; top: 110px; }
    .side-card {
      background: var(--surface); border: 1px solid var(--border);
      border-radius: var(--radius); padding: 26px; margin-bottom: 24px;
      box-shadow: var(--shadow-sm); transition: box-shadow 0.3s;
    }
    .side-card:hover { box-shadow: var(--shadow-md); }
    .side-card h4 { font-size: 17px; font-weight: 800; margin-bottom: 17px; color: var(--text); position: relative; padding-bottom: 13px; }
    .side-card h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 40px; height: 3px; background: var(--accent); border-radius: 4px; }
    .side-cat-list li { margin-bottom: 10px; }
    .side-cat-list a {
      display: flex; align-items: center; gap: 12px;
      background: var(--bg); border: 1px solid var(--border);
      border-radius: var(--radius-sm); padding: 13px 16px;
      transition: all 0.25s;
    }
    .side-cat-list a:hover { background: var(--primary-light); border-color: var(--primary); transform: translateX(4px); }
    .side-cat-list i { color: var(--primary); font-size: 15px; width: 20px; text-align: center; }
    .side-cat-list span { flex: 1; font-size: 14.5px; font-weight: 600; color: var(--text); }
    .side-cat-list a > i:last-child { color: var(--text-weak); font-size: 12px; transition: transform 0.2s; }
    .side-cat-list a:hover > i:last-child { transform: translateX(3px); color: var(--primary); }
    .side-tip { background: linear-gradient(135deg, var(--navy), var(--navy-light)); border-color: transparent; color: #dce5ff; }
    .side-tip h4 { color: #fff; }
    .side-tip h4::after { background: var(--accent); }
    .tip-content p { font-size: 14px; color: rgba(255,255,255,0.72); line-height: 1.7; }
    .tip-content strong { color: #fff; font-size: 15px; }
    .domain-text { color: var(--accent); font-weight: 700; letter-spacing: 0.3px; }
    .tip-badge {
      display: inline-flex; align-items: center; gap: 8px;
      background: rgba(16, 185, 129, 0.18); border: 1px solid rgba(16, 185, 129, 0.4);
      color: #4ade80; border-radius: 40px; padding: 5px 14px;
      font-size: 12.5px; font-weight: 700; margin-top: 14px;
    }
    .side-feature-list li {
      display: flex; align-items: center; gap: 12px;
      padding: 10px 0; font-size: 14.5px; color: var(--text);
      border-bottom: 1px dashed var(--border);
    }
    .side-feature-list li:last-child { border-bottom: 0; }
    .side-feature-list i { color: var(--primary); width: 20px; text-align: center; font-size: 15px; }

    .related-section { padding: 70px 0 70px; }
    .related-card {
      display: block; background: var(--surface); border: 1px solid var(--border);
      border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 26px;
      box-shadow: var(--shadow-sm); transition: all 0.3s ease;
      height: 100%;
    }
    .related-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
    .related-card img { width: 100%; height: 190px; object-fit: cover; transition: transform 0.5s ease; }
    .related-card:hover img { transform: scale(1.06); }
    .related-body { padding: 24px; overflow: hidden; }
    .card-label {
      display: inline-block; background: var(--primary-light); color: var(--primary);
      font-size: 12px; font-weight: 700; border-radius: 40px; padding: 3px 12px; margin-bottom: 12px;
    }
    .related-body h3 { font-size: 19px; font-weight: 800; margin-bottom: 8px; color: var(--text); }
    .related-body p { font-size: 14px; color: var(--text-weak); line-height: 1.65; margin-bottom: 0; }

    .faq-section { background: var(--navy); padding: 80px 0; position: relative; overflow: hidden; }
    .faq-section::before {
      content: ""; position: absolute; top: -180px; right: -140px; width: 380px; height: 380px;
      border-radius: 50%; background: radial-gradient(circle, rgba(22,72,216,0.28), transparent 70%);
    }
    .faq-wrap { max-width: 860px; margin: 0 auto; position: relative; }
    .faq-item {
      background: rgba(255,255,255,0.055); border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius); padding: 24px 28px; margin-bottom: 14px;
      transition: all 0.3s ease;
    }
    .faq-item:hover { background: rgba(255,255,255,0.09); border-color: rgba(255,255,255,0.2); transform: translateX(4px); }
    .faq-item h4 { color: #fff; font-size: 17px; font-weight: 700; display: flex; align-items: center; gap: 12px; }
    .faq-item h4 i { color: var(--accent); font-size: 15px; }
    .faq-item p { color: rgba(255,255,255,0.7); font-size: 14.5px; line-height: 1.8; margin-top: 12px; padding-left: 27px; }

    .cta-section { background: linear-gradient(135deg, var(--primary) 0%, #3370ff 55%, #5b8bff 100%); padding: 78px 0; position: relative; overflow: hidden; }
    .cta-section::before {
      content: ""; position: absolute; width: 460px; height: 460px; border-radius: 50%;
      background: rgba(255,255,255,0.08); top: -220px; left: -120px;
    }
    .cta-section::after {
      content: ""; position: absolute; width: 300px; height: 300px; border-radius: 50%;
      background: rgba(255,255,255,0.07); bottom: -150px; right: -80px;
    }
    .cta-inner { text-align: center; color: #fff; position: relative; z-index: 2; }
    .cta-inner h2 { font-size: 34px; font-weight: 800; letter-spacing: -0.02em; }
    .cta-inner p { font-size: 16px; color: rgba(255,255,255,0.85); margin-top: 12px; max-width: 560px; margin-left: auto; margin-right: auto; }
    .cta-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 16px; margin-top: 32px; }
    .btn-white {
      display: inline-flex; align-items: center; gap: 10px;
      background: #fff; color: var(--primary); border-radius: 40px;
      padding: 14px 34px; font-weight: 800; font-size: 15px;
      transition: all 0.25s ease; box-shadow: 0 10px 30px rgba(0,0,0,0.18);
    }
    .btn-white:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(0,0,0,0.24); }
    .btn-outline-white {
      display: inline-flex; align-items: center; gap: 10px;
      border: 2px solid rgba(255,255,255,0.7); color: #fff; border-radius: 40px;
      padding: 12px 32px; font-weight: 700; font-size: 15px;
      transition: all 0.25s ease;
    }
    .btn-outline-white:hover { background: rgba(255,255,255,0.16); transform: translateY(-3px); border-color: #fff; }

    .site-footer { background: #08111f; color: #b9c4d8; padding: 70px 0 0; }
    .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; padding-bottom: 44px; }
    .footer-brand .brand { font-size: 26px; font-weight: 800; color: #fff; letter-spacing: -0.02em; }
    .footer-brand p { font-size: 14.5px; line-height: 1.75; color: #8b98ac; margin-top: 16px; max-width: 340px; }
    .footer-col h5 { color: #fff; font-size: 15.5px; font-weight: 700; margin-bottom: 18px; }
    .footer-col ul li { margin-bottom: 10px; }
    .footer-col a {
      color: #8b98ac; font-size: 14px; transition: all 0.2s;
      position: relative; padding-left: 0;
    }
    .footer-col a:hover { color: var(--accent); padding-left: 6px; }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.08);
      padding: 24px 0 28px; display: flex; flex-wrap: wrap;
      justify-content: space-between; gap: 10px;
      font-size: 13px; color: #64748b;
    }
    .footer-bottom .domain { color: var(--accent); font-weight: 700; font-size: 13px; }

    @media (max-width: 1024px) {
      .article-title { font-size: 34px; }
      .article-card { padding: 34px 34px; }
      .article-sidebar { position: static; margin-top: 24px; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .site-header { padding: 10px 12px 0; }
      .dock-nav { border-radius: 18px; padding: 8px 8px 8px 18px; flex-wrap: wrap; }
      .brand-logo { font-size: 20px; }
      .nav-menu {
        display: none; width: 100%; flex-direction: column; gap: 4px;
        padding: 14px 4px 6px; margin-top: 8px; border-top: 1px solid var(--border);
        background: rgba(255,255,255,0.95); border-radius: 16px;
      }
      .nav-menu.open { display: flex; }
      .nav-menu a { width: 100%; text-align: center; padding: 11px 14px; border-radius: 12px; }
      .nav-menu a:hover { padding-left: 14px; transform: none; }
      .nav-cta span { display: none; }
      .nav-cta { padding: 9px 14px; }
      .nav-cta i { font-size: 14px; }
      .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
      .article-hero { margin-top: -62px; padding: 120px 0 68px; border-radius: 0 0 22px 22px; }
      .article-title { font-size: 28px; }
      .article-meta { gap: 10px 16px; font-size: 13px; }
      .article-card { padding: 24px 18px; border-radius: 16px; }
      .article-content { font-size: 15.5px; }
      .related-section { padding: 46px 0; }
      .faq-section { padding: 54px 0; }
      .cta-section { padding: 54px 0; }
      .cta-inner h2 { font-size: 27px; }
      .footer-grid { grid-template-columns: 1fr; gap: 30px; }
      .footer-bottom { flex-direction: column; text-align: center; justify-content: center; }
      .author-card { flex-direction: column; }
    }
    @media (max-width: 520px) {
      .container { padding: 0 16px; }
      .article-hero { padding-top: 108px; }
      .article-title { font-size: 24px; }
      .article-meta { font-size: 12.5px; gap: 8px 12px; }
      .section-head h2 { font-size: 25px; }
      .related-card img { height: 170px; }
      .cta-actions { flex-direction: column; align-items: center; }
      .btn-white, .btn-outline-white { width: 100%; justify-content: center; }
    }

/* roulang page: category2 */
:root {
    --primary: #1a4f8b;
    --primary-light: #2d6dc4;
    --primary-soft: #eaf1fb;
    --accent: #12b8a6;
    --accent-light: #e2f8f5;
    --ink: #1e2a38;
    --ink-weak: #5b6b7d;
    --bg: #f6f9fc;
    --card-bg: #ffffff;
    --border: #e3eaf2;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 8px;
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 30px rgba(0,0,0,0.07);
    --shadow-lg: 0 24px 60px rgba(0,0,0,0.1);
    --space-section: 88px;
    --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: var(--font-main);
    background: var(--bg);
    color: var(--ink);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }
  img { max-width: 100%; display: block; }
  a { text-decoration: none; color: inherit; }
  ul { list-style: none; }
  button { background: none; border: none; cursor: pointer; }

  .container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
  .text-center { text-align: center; }

  /* ===== Floating Dock Nav ===== */
  .site-header {
    position: sticky;
    top: 18px;
    z-index: 999;
    padding: 0 24px;
  }
  .dock-nav {
    max-width: 1080px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255,255,255,0.65);
    border-radius: 60px;
    padding: 10px 12px 10px 26px;
    box-shadow: 0 12px 40px rgba(26,79,139,0.12);
    transition: box-shadow .3s ease;
  }
  .dock-nav:hover { box-shadow: 0 16px 48px rgba(26,79,139,0.16); }
  .brand-logo {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--ink);
    white-space: nowrap;
  }
  .brand-logo .logo-mark {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    box-shadow: 0 4px 14px rgba(26,79,139,0.3);
  }
  .nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    margin: 0;
  }
  .nav-links a {
    padding: 8px 18px;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 500;
    color: var(--ink-weak);
    transition: all .25s ease;
  }
  .nav-links a:hover {
    color: var(--primary);
    background: var(--primary-soft);
  }
  .nav-links a.active {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    box-shadow: 0 4px 14px rgba(26,79,139,0.25);
  }
  .dock-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--accent), #0da391);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    padding: 10px 22px;
    border-radius: 40px;
    box-shadow: 0 4px 16px rgba(18,184,166,0.3);
    transition: transform .25s ease, box-shadow .25s ease;
    white-space: nowrap;
  }
  .dock-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(18,184,166,0.4); }

  /* ===== Breadcrumb ===== */
  .breadcrumb {
    max-width: 1200px;
    margin: 28px auto 0;
    padding: 0 32px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--ink-weak);
  }
  .breadcrumb a { color: var(--primary); font-weight: 500; }
  .breadcrumb a:hover { text-decoration: underline; }
  .breadcrumb .sep { font-size: 12px; color: #a8b6c4; }

  /* ===== Page Hero ===== */
  .page-hero {
    position: relative;
    padding: 64px 0 72px;
    background: linear-gradient(180deg, #eff6ff 0%, var(--bg) 100%);
  }
  .page-hero .hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    opacity: 0.12;
    pointer-events: none;
  }
  .page-hero .container { position: relative; z-index: 2; }
  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-light);
    color: #0d8b7d;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 30px;
    margin-bottom: 18px;
  }
  .page-hero h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--ink);
  }
  .page-hero h1 .highlight {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
  .page-hero .lead {
    font-size: 18px;
    color: var(--ink-weak);
    max-width: 640px;
    margin-bottom: 28px;
  }
  .hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
  }
  .hero-meta .tag-chip {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 30px;
    padding: 7px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--ink-weak);
    display: inline-flex;
    align-items: center;
    gap: 7px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
  }
  .hero-meta .tag-chip i { color: var(--primary); }

  /* ===== Section Base ===== */
  .section-block { padding: var(--space-section) 0; }
  .section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 52px;
  }
  .section-head .subtitle {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 10px;
  }
  .section-head h2 {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 12px;
    color: var(--ink);
    letter-spacing: -0.5px;
  }
  .section-head p {
    color: var(--ink-weak);
    font-size: 16px;
  }

  /* ===== Feature Cards ===== */
  .verify-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }
  .verify-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 36px 30px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: transform .3s ease, box-shadow .3s ease;
    position: relative;
    overflow: hidden;
  }
  .verify-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity .3s ease;
  }
  .verify-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); }
  .verify-card:hover::before { opacity: 1; }
  .card-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 20px;
  }
  .icon-blue { background: var(--primary-soft); color: var(--primary); }
  .icon-teal { background: var(--accent-light); color: var(--accent); }
  .icon-amber { background: #fff4e0; color: #e29a2d; }
  .verify-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
  }
  .verify-card p {
    color: var(--ink-weak);
    font-size: 14.5px;
    line-height: 1.7;
  }
  .card-tag {
    display: inline-block;
    margin-top: 16px;
    background: var(--bg);
    border-radius: 20px;
    padding: 4px 14px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
  }

  /* ===== Process Steps ===== */
  .process-section {
    background: #1a2a3d;
    background-image: radial-gradient(circle at 10% 20%, rgba(18,184,166,0.12) 0%, transparent 40%), radial-gradient(circle at 90% 80%, rgba(45,109,196,0.18) 0%, transparent 45%);
    color: #fff;
  }
  .step-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
  .step-card {
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    padding: 30px 24px;
    position: relative;
    backdrop-filter: blur(6px);
    transition: background .3s ease, transform .3s ease;
  }
  .step-card:hover { background: rgba(255,255,255,0.11); transform: translateY(-4px); }
  .step-num {
    font-size: 40px;
    font-weight: 800;
    line-height: 1;
    background: linear-gradient(135deg, #12b8a6, #4ec9e8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    display: block;
  }
  .step-card h4 { font-size: 18px; margin-bottom: 8px; }
  .step-card p { font-size: 14px; color: #b7c3d2; line-height: 1.7; }

  /* ===== Image Feature ===== */
  .feature-split {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
    align-items: center;
  }
  .split-img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    position: relative;
    height: 380px;
  }
  .split-img img { width: 100%; height: 100%; object-fit: cover; }
  .split-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(26,79,139,0.25) 100%);
  }
  .split-badge {
    position: absolute;
    bottom: 20px;
    left: 20px;
    z-index: 2;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(8px);
    border-radius: 14px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    box-shadow: 0 6px 20px rgba(0,0,0,0.12);
  }
  .split-list { margin-top: 24px; display: flex; flex-direction: column; gap: 16px; }
  .split-list li {
    display: flex;
    gap: 12px;
    font-size: 15px;
    color: var(--ink-weak);
  }
  .split-list li i {
    color: var(--accent);
    margin-top: 4px;
    font-size: 15px;
  }
  .split-list li strong { color: var(--ink); font-weight: 600; }

  /* ===== Stats Bar ===== */
  .stats-bar {
    background: var(--primary);
    border-radius: var(--radius-lg);
    padding: 40px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
    color: #fff;
    box-shadow: 0 16px 40px rgba(26,79,139,0.28);
    margin-top: 80px;
  }
  .stats-bar .stat-num {
    font-size: 38px;
    font-weight: 800;
    line-height: 1.2;
  }
  .stats-bar .stat-label {
    font-size: 14px;
    opacity: 0.8;
    margin-top: 4px;
  }
  .stat-item + .stat-item { border-left: 1px solid rgba(255,255,255,0.18); }

  /* ===== Article Cards ===== */
  .article-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }
  .article-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: transform .3s ease, box-shadow .3s ease;
    display: flex;
    flex-direction: column;
  }
  .article-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
  .article-cover {
    height: 180px;
    overflow: hidden;
    position: relative;
  }
  .article-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
  }
  .article-card:hover .article-cover img { transform: scale(1.04); }
  .article-body { padding: 24px 26px 26px; flex: 1; display: flex; flex-direction: column; }
  .article-meta {
    display: flex;
    gap: 14px;
    font-size: 12px;
    color: #97a5b4;
    margin-bottom: 8px;
  }
  .article-meta span { display: flex; align-items: center; gap: 5px; }
  .article-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
  .article-body h3 a:hover { color: var(--primary); }
  .article-body p { font-size: 14.5px; color: var(--ink-weak); line-height: 1.7; flex: 1; }
  .article-link {
    margin-top: 16px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap .2s ease;
  }
  .article-link:hover { gap: 10px; }

  /* ===== FAQ ===== */
  .faq-list {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
  }
  .faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: box-shadow .25s ease;
  }
  .faq-item:hover { box-shadow: var(--shadow-sm); }
  .faq-q {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    cursor: pointer;
    gap: 16px;
  }
  .faq-q i { color: var(--primary); transition: transform .3s ease; font-size: 14px; }
  .faq-item.open .faq-q i { transform: rotate(180deg); }
  .faq-a {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease, padding .35s ease;
    font-size: 14.5px;
    color: var(--ink-weak);
    line-height: 1.75;
  }
  .faq-item.open .faq-a {
    padding: 0 24px 20px;
    max-height: 400px;
  }

  /* ===== CTA ===== */
  .cta-section {
    background: linear-gradient(135deg, #eff6ff 0%, #e2f8f5 100%);
    border-radius: var(--radius-lg);
    padding: 64px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
  }
  .cta-section::before {
    content: '';
    position: absolute;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: rgba(26,79,139,0.08);
    top: -90px;
    right: -70px;
  }
  .cta-section h2 { font-size: 32px; font-weight: 800; margin-bottom: 12px; }
  .cta-section p { color: var(--ink-weak); max-width: 560px; margin: 0 auto 30px; }
  .cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

  /* ===== Buttons ===== */
  .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 30px;
    border-radius: 40px;
    font-size: 15px;
    font-weight: 600;
    transition: all .25s ease;
    border: none;
    cursor: pointer;
  }
  .btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    box-shadow: 0 4px 18px rgba(26,79,139,0.28);
  }
  .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(26,79,139,0.35); }
  .btn-primary:focus-visible { outline: 3px solid rgba(26,79,139,0.5); outline-offset: 3px; }
  .btn-outline {
    background: #fff;
    color: var(--primary);
    border: 2px solid var(--primary);
  }
  .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
  .btn-white {
    background: #fff;
    color: var(--primary);
    box-shadow: 0 4px 18px rgba(0,0,0,0.15);
  }
  .btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,0,0,0.2); }

  /* ===== Footer ===== */
  .site-footer {
    background: #131c29;
    color: #9fb0c0;
    padding: 68px 0 0;
    margin-top: 60px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
  }
  .footer-brand .brand {
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
  }
  .footer-brand .brand .logo-mark {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
  }
  .footer-brand p { font-size: 14px; line-height: 1.8; max-width: 320px; }
  .footer-col h5 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 18px;
  }
  .footer-col ul { display: flex; flex-direction: column; gap: 10px; }
  .footer-col a { font-size: 14px; color: #9fb0c0; transition: color .2s ease; }
  .footer-col a:hover { color: var(--accent); }
  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 22px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
  }
  .footer-bottom .domain { color: var(--accent); }
  .footer-bottom p { margin: 0; }

  /* ===== Responsive ===== */
  @media (max-width: 1024px) {
    :root { --space-section: 72px; }
    .verify-grid { grid-template-columns: repeat(2, 1fr); }
    .step-grid { grid-template-columns: repeat(2, 1fr); }
    .feature-split { grid-template-columns: 1fr; gap: 32px; }
    .stats-bar { grid-template-columns: repeat(2, 1fr); }
    .stat-item:nth-child(3) { border-left: none; }
    .page-hero h1 { font-size: 40px; }
  }

  @media (max-width: 768px) {
    .site-header { top: 10px; padding: 0 12px; }
    .dock-nav { flex-wrap: wrap; padding: 10px 14px; border-radius: 24px; gap: 8px; }
    .brand-logo { font-size: 19px; }
    .nav-links { order: 3; width: 100%; justify-content: center; overflow-x: auto; padding-bottom: 4px; }
    .nav-links a { padding: 6px 14px; font-size: 14px; white-space: nowrap; }
    .dock-cta { font-size: 13px; padding: 9px 16px; }
    .container { padding: 0 20px; }
    .page-hero { padding: 44px 0 52px; }
    .page-hero h1 { font-size: 34px; }
    .page-hero .lead { font-size: 16px; }
    .hero-meta { gap: 8px; }
    .section-head h2 { font-size: 28px; }
    .verify-grid { grid-template-columns: 1fr; }
    .article-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .cta-section { padding: 40px 24px; }
    .cta-section h2 { font-size: 26px; }
    .breadcrumb { padding: 0 20px; margin-top: 20px; }
  }

  @media (max-width: 520px) {
    :root { --space-section: 56px; }
    .dock-nav { padding: 8px 12px; }
    .brand-logo .logo-mark { width: 34px; height: 34px; font-size: 15px; }
    .brand-logo { font-size: 17px; }
    .nav-links a { padding: 5px 10px; font-size: 13px; }
    .dock-cta { padding: 8px 14px; font-size: 12px; }
    .page-hero h1 { font-size: 28px; }
    .page-hero .lead { font-size: 14.5px; }
    .step-grid { grid-template-columns: 1fr; }
    .stats-bar { grid-template-columns: 1fr; padding: 24px; }
    .stat-item { border-left: none !important; }
    .section-head h2 { font-size: 24px; }
    .verify-card { padding: 26px 22px; }
    .split-img { height: 260px; }
    .article-body { padding: 20px; }
    .faq-q { font-size: 14.5px; padding: 15px 18px; }
    .faq-a { font-size: 13.5px; }
  }

/* roulang page: category3 */
:root {
      --primary: #2563eb;
      --primary-dark: #1d4ed8;
      --primary-light: #eff6ff;
      --accent: #0ea5e9;
      --accent-soft: #f0f9ff;
      --bg-body: #f8fafc;
      --bg-white: #ffffff;
      --bg-deep: #0f172a;
      --text-main: #0f172a;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 24px;
      --shadow-sm: 0 2px 10px rgba(15,23,42,.05);
      --shadow-md: 0 8px 30px rgba(15,23,42,.07);
      --shadow-lg: 0 24px 60px rgba(15,23,42,.10);
      --space-section: 88px;
      --font-sans: "PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
    }

    *, *::before, *::after {
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-sans);
      background: var(--bg-body);
      color: var(--text-main);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      margin: 0;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      color: var(--primary);
      text-decoration: none;
      transition: color .2s ease;
    }
    a:hover {
      color: var(--primary-dark);
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 按钮 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      font-size: 15px;
      line-height: 1;
      padding: 13px 28px;
      border-radius: 999px;
      border: 0;
      cursor: pointer;
      transition: all .25s ease;
      text-align: center;
    }
    .btn:focus-visible {
      outline: 3px solid rgba(37,99,235,.35);
      outline-offset: 2px;
    }
    .btn-sm {
      padding: 9px 20px;
      font-size: 14px;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 4px 14px rgba(37,99,235,.3);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(37,99,235,.35);
    }
    .btn-primary:active {
      transform: translateY(0);
      box-shadow: 0 2px 8px rgba(37,99,235,.3);
    }
    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 1.5px solid var(--primary);
    }
    .btn-outline:hover {
      background: var(--primary-light);
      color: var(--primary-dark);
      transform: translateY(-2px);
    }
    .btn-ghost {
      background: rgba(255,255,255,.15);
      color: #fff;
      border: 1.5px solid rgba(255,255,255,.4);
    }
    .btn-ghost:hover {
      background: rgba(255,255,255,.25);
      color: #fff;
      border-color: rgba(255,255,255,.7);
    }

    /* 导航 */
    .site-header {
      position: fixed;
      top: 18px;
      left: 0;
      right: 0;
      z-index: 100;
      pointer-events: none;
    }
    .dock-wrap {
      pointer-events: auto;
      max-width: 1120px;
      margin: 0 auto;
      padding: 0 20px;
    }
    .dock-nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: rgba(255,255,255,.85);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-radius: 60px;
      border: 1px solid rgba(255,255,255,.65);
      box-shadow: 0 8px 40px rgba(15,23,42,.08);
      padding: 10px 14px 10px 24px;
      transition: box-shadow .3s ease;
    }
    .dock-nav:hover {
      box-shadow: 0 12px 50px rgba(15,23,42,.12);
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -.5px;
      white-space: nowrap;
    }
    .brand:hover {
      color: var(--primary);
    }
    .brand-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 15px;
      box-shadow: 0 4px 12px rgba(37,99,235,.25);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .nav-link {
      padding: 9px 18px;
      border-radius: 999px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      transition: all .22s ease;
    }
    .nav-link:hover {
      background: var(--primary-light);
      color: var(--primary);
    }
    .nav-link.active {
      background: var(--primary);
      color: #fff;
      font-weight: 600;
      box-shadow: 0 4px 14px rgba(37,99,235,.28);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .nav-toggle {
      display: none;
      background: var(--primary-light);
      border: 0;
      border-radius: 50%;
      width: 40px;
      height: 40px;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 16px;
      cursor: pointer;
      transition: background .2s;
    }
    .nav-toggle:hover {
      background: #dbeafe;
    }

    /* Hero / 页面横幅 */
    .faq-hero {
      position: relative;
      padding: 160px 0 90px;
      background: linear-gradient(rgba(15,23,42,.72), rgba(15,23,42,.55)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
      color: #fff;
      text-align: center;
      overflow: hidden;
    }
    .faq-hero::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 120px;
      background: linear-gradient(180deg, transparent, var(--bg-body));
    }
    .faq-hero .hero-inner {
      position: relative;
      z-index: 2;
      max-width: 820px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255,255,255,.15);
      border: 1px solid rgba(255,255,255,.25);
      backdrop-filter: blur(8px);
      padding: 7px 18px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 500;
      letter-spacing: .3px;
      margin-bottom: 24px;
    }
    .faq-hero h1 {
      font-size: 44px;
      line-height: 1.25;
      font-weight: 800;
      margin: 0 0 16px;
      letter-spacing: -1px;
    }
    .faq-hero h1 span {
      background: linear-gradient(90deg, #60a5fa, #38bdf8);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .faq-hero p {
      font-size: 17px;
      color: rgba(255,255,255,.85);
      max-width: 640px;
      margin: 0 auto 30px;
    }
    .hero-search {
      max-width: 560px;
      margin: 0 auto;
      position: relative;
    }
    .hero-search input {
      width: 100%;
      padding: 16px 50px 16px 22px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,.3);
      background: rgba(255,255,255,.95);
      font-size: 15px;
      color: var(--text-main);
      box-shadow: 0 8px 30px rgba(0,0,0,.2);
      transition: all .3s ease;
    }
    .hero-search input:focus {
      outline: none;
      border-color: var(--accent);
      box-shadow: 0 0 0 4px rgba(56,189,248,.25), 0 8px 30px rgba(0,0,0,.2);
    }
    .hero-search input::placeholder {
      color: #94a3b8;
    }
    .hero-search .search-btn {
      position: absolute;
      right: 6px;
      top: 6px;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary);
      border: 0;
      color: #fff;
      font-size: 15px;
      cursor: pointer;
      transition: all .25s;
    }
    .hero-search .search-btn:hover {
      background: var(--primary-dark);
    }
    .hero-stats {
      display: flex;
      justify-content: center;
      gap: 40px;
      margin-top: 44px;
      flex-wrap: wrap;
    }
    .hero-stat {
      text-align: center;
    }
    .hero-stat .num {
      display: block;
      font-size: 30px;
      font-weight: 800;
      color: #fff;
      line-height: 1.2;
    }
    .hero-stat .label {
      font-size: 13px;
      color: rgba(255,255,255,.7);
    }

    /* 板块通用 */
    .section {
      padding: var(--space-section) 0;
    }
    .section-alt {
      background: var(--bg-white);
    }
    .section-head {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 52px;
    }
    .section-eyebrow {
      display: inline-block;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 13px;
      font-weight: 700;
      padding: 6px 18px;
      border-radius: 999px;
      margin-bottom: 14px;
      letter-spacing: .5px;
    }
    .section-head h2 {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.3;
      margin: 0 0 14px;
      letter-spacing: -.5px;
    }
    .section-head p {
      color: var(--text-muted);
      font-size: 16px;
      margin: 0;
    }

    /* 分类卡片 */
    .cat-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .cat-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all .3s ease;
      display: block;
      color: var(--text-main);
    }
    .cat-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: rgba(37,99,235,.25);
      color: var(--text-main);
    }
    .cat-card .card-img {
      height: 140px;
      background-size: cover;
      background-position: center;
      position: relative;
    }
    .cat-card .card-img::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 20%, rgba(15,23,42,.55));
    }
    .cat-card .card-icon {
      position: absolute;
      bottom: 12px;
      left: 18px;
      z-index: 2;
      width: 42px;
      height: 42px;
      background: #fff;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 17px;
      box-shadow: 0 4px 14px rgba(0,0,0,.15);
    }
    .cat-card .card-body {
      padding: 18px 20px 22px;
    }
    .cat-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin: 0 0 6px;
    }
    .cat-card p {
      font-size: 14px;
      color: var(--text-muted);
      margin: 0;
      line-height: 1.6;
    }
    .cat-card .card-link {
      margin-top: 14px;
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 热门问题 */
    .hot-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .hot-side {
      position: relative;
    }
    .hot-side img {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-lg);
      width: 100%;
      height: 400px;
      object-fit: cover;
    }
    .hot-side .badge-float {
      position: absolute;
      top: 20px;
      left: 20px;
      background: rgba(255,255,255,.92);
      backdrop-filter: blur(8px);
      border-radius: 999px;
      padding: 8px 18px;
      font-size: 13px;
      font-weight: 700;
      color: var(--primary);
      box-shadow: var(--shadow-md);
    }
    .hot-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .hot-item {
      display: flex;
      align-items: center;
      gap: 18px;
      padding: 20px 0;
      border-bottom: 1px solid var(--border-color);
      transition: all .25s ease;
    }
    .hot-item:last-child {
      border-bottom: 0;
    }
    .hot-item:hover {
      padding-left: 8px;
    }
    .hot-num {
      width: 38px;
      height: 38px;
      border-radius: 12px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 16px;
      flex-shrink: 0;
    }
    .hot-item:nth-child(1) .hot-num {
      background: var(--primary);
      color: #fff;
    }
    .hot-item:nth-child(2) .hot-num {
      background: var(--accent);
      color: #fff;
    }
    .hot-item:nth-child(3) .hot-num {
      background: #f59e0b;
      color: #fff;
    }
    .hot-item .hot-info {
      flex: 1;
    }
    .hot-item .hot-info h4 {
      font-size: 16px;
      font-weight: 600;
      margin: 0 0 4px;
      color: var(--text-main);
    }
    .hot-item .hot-info p {
      font-size: 13px;
      color: var(--text-muted);
      margin: 0;
    }
    .hot-item .hot-tag {
      font-size: 12px;
      background: var(--accent-soft);
      color: var(--accent);
      padding: 4px 12px;
      border-radius: 999px;
      white-space: nowrap;
      font-weight: 500;
    }

    /* FAQ 手风琴 */
    .faq-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }
    .faq-col {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }
    .faq-col-title {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 20px;
    }
    .faq-col-title .col-icon {
      width: 42px;
      height: 42px;
      background: var(--primary-light);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 17px;
    }
    .faq-col-title h3 {
      font-size: 20px;
      font-weight: 700;
      margin: 0;
    }
    .accordion {
      margin: 0;
    }
    .accordion-item {
      border: 0;
      border-bottom: 1px solid var(--border-color);
      background: transparent;
    }
    .accordion-item:last-child {
      border-bottom: 0;
    }
    .accordion-title {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      padding: 16px 0;
      border: 0;
      background: transparent;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      transition: color .2s;
    }
    .accordion-title:hover,
    .accordion-title:focus {
      background: transparent;
      color: var(--primary);
    }
    .accordion-title::after {
      font-family: 'Font Awesome 6 Free';
      font-weight: 900;
      content: '\f078';
      color: var(--text-muted);
      font-size: 13px;
      transition: transform .3s;
    }
    .accordion-item.is-active .accordion-title::after {
      transform: rotate(180deg);
      color: var(--primary);
    }
    .accordion-content {
      padding: 0 0 18px;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.75;
    }
    .accordion-content p {
      margin: 0;
    }

    /* 流程步骤 */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 26px;
      counter-reset: step;
    }
    .step-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 34px 26px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
      transition: all .3s ease;
    }
    .step-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }
    .step-num {
      width: 48px;
      height: 48px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: 800;
      margin: 0 auto 18px;
      box-shadow: 0 6px 16px rgba(37,99,235,.3);
    }
    .step-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin: 0 0 8px;
    }
    .step-card p {
      font-size: 14px;
      color: var(--text-muted);
      margin: 0;
    }

    /* CTA 区 */
    .cta-section {
      position: relative;
      padding: 80px 0;
      background: linear-gradient(rgba(15,23,42,.8), rgba(15,23,42,.7)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
      text-align: center;
      color: #fff;
    }
    .cta-section .container {
      position: relative;
      z-index: 2;
    }
    .cta-section h2 {
      font-size: 34px;
      font-weight: 800;
      margin: 0 0 14px;
    }
    .cta-section p {
      font-size: 16px;
      color: rgba(255,255,255,.85);
      max-width: 520px;
      margin: 0 auto 30px;
    }
    .cta-btns {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .cta-note {
      margin-top: 20px;
      font-size: 13px;
      color: rgba(255,255,255,.6);
    }

    /* 页脚 */
    .site-footer {
      background: var(--bg-deep);
      color: #94a3b8;
      padding: 70px 0 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      padding-bottom: 50px;
    }
    .footer-brand .brand {
      color: #fff;
      margin-bottom: 14px;
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.7;
      max-width: 340px;
      margin: 0;
    }
    .footer-col h5 {
      color: #fff;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-col ul {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-col ul li {
      margin-bottom: 10px;
    }
    .footer-col ul a {
      color: #94a3b8;
      font-size: 14px;
      transition: color .2s;
    }
    .footer-col ul a:hover {
      color: #fff;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,.08);
      padding: 24px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
      font-size: 13px;
    }
    .footer-bottom .domain {
      color: #64748b;
    }

    /* 响应式 */
    @media (max-width: 1024px) {
      .cat-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hot-wrap {
        grid-template-columns: 1fr;
        gap: 30px;
      }
      .hot-side img {
        height: 300px;
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .faq-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      :root {
        --space-section: 60px;
      }
      .dock-wrap {
        padding: 0 12px;
      }
      .dock-nav {
        padding: 8px 10px 8px 18px;
      }
      .brand {
        font-size: 17px;
      }
      .brand-icon {
        width: 32px;
        height: 32px;
        font-size: 13px;
      }
      .main-nav {
        position: absolute;
        top: calc(100% + 10px);
        left: 12px;
        right: 12px;
        background: rgba(255,255,255,.98);
        backdrop-filter: blur(18px);
        border-radius: 24px;
        border: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        padding: 14px;
        flex-direction: column;
        align-items: stretch;
        display: none;
      }
      .main-nav.open {
        display: flex;
      }
      .nav-link {
        padding: 14px 18px;
        text-align: center;
        font-size: 16px;
      }
      .nav-toggle {
        display: inline-flex;
      }
      .nav-actions .btn {
        display: none;
      }
      .faq-hero {
        padding: 130px 0 70px;
      }
      .faq-hero h1 {
        font-size: 32px;
      }
      .faq-hero p {
        font-size: 15px;
      }
      .hero-stats {
        gap: 24px;
      }
      .hero-stat .num {
        font-size: 24px;
      }
      .section-head h2 {
        font-size: 28px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }
    }

    @media (max-width: 520px) {
      .cat-grid {
        grid-template-columns: 1fr;
      }
      .steps-grid {
        grid-template-columns: 1fr;
      }
      .faq-hero h1 {
        font-size: 26px;
      }
      .hero-search input {
        padding: 14px 46px 14px 18px;
      }
      .cta-section h2 {
        font-size: 26px;
      }
      .cta-btns .btn {
        width: 100%;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
      .faq-col {
        padding: 22px;
      }
    }