/* roulang page: index */
:root{--ink:#17233c;--muted:#68748b;--brand:#3468f5;--brand2:#6b50e8;--soft:#f4f7fc;--line:#e5eaf3;--white:#fff;--radius:20px;--shadow:0 18px 50px rgba(30,48,91,.11)}
*{box-sizing:border-box;margin:0;padding:0}body{font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.75}a{text-decoration:none;color:inherit}img{max-width:100%;display:block}button{font:inherit;border:0;cursor:pointer}.container{width:min(1160px,92%);margin:auto}
.header{height:76px;display:flex;align-items:center;border-bottom:1px solid rgba(229,234,243,.8);background:#fff}.nav{display:flex;align-items:center;justify-content:space-between}.logo{font-size:20px;font-weight:800;letter-spacing:-.5px}.logo span{color:var(--brand)}.links{display:flex;gap:32px;align-items:center;font-size:15px;color:var(--muted)}.links a{transition:.25s}.links a:hover,.links .active{color:var(--brand);font-weight:700}.nav-btn{padding:10px 20px;border-radius:10px;background:var(--ink);color:#fff}
.hero{min-height:590px;padding:92px 0 82px;background:linear-gradient(90deg,rgba(11,26,62,.91),rgba(20,39,88,.63)),url('/images/sd/backpic/back-1.jpg') center/cover}.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:70px;align-items:center}.eyebrow,.badge{display:inline-block;color:#b9caff;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);padding:5px 13px;border-radius:30px;font-size:13px}.hero h1{color:#fff;font-size:clamp(34px,5vw,62px);line-height:1.2;margin:22px 0 20px;letter-spacing:-2px}.hero p{color:#d7e0f4;font-size:18px;max-width:610px}.actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 24px;border-radius:11px;font-weight:700;transition:.25s}.btn-primary{background:#6e8dff;color:#fff}.btn-primary:hover{background:#8ba4ff;transform:translateY(-2px)}.btn-light{color:#fff;border:1px solid rgba(255,255,255,.32)}.hero-card{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);padding:26px;border-radius:24px;backdrop-filter:blur(8px)}.hero-card img{border-radius:14px;height:260px;width:100%;object-fit:cover}.hero-card strong{display:block;color:#fff;margin-top:18px;font-size:19px}.hero-card small{color:#c8d3ea}
.section{padding:92px 0}.section-head{max-width:680px;margin-bottom:42px}.section-head h2{font-size:34px;line-height:1.3;margin:12px 0}.section-head p{color:var(--muted)}.tag{color:var(--brand);font-weight:800;font-size:13px;letter-spacing:1px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:.3s}.card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}.card img{height:190px;width:100%;object-fit:cover}.card-body{padding:24px}.card h3{font-size:20px;margin-bottom:9px}.card p{color:var(--muted);font-size:15px}.feature{background:var(--soft)}.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}.feature img{border-radius:22px;box-shadow:var(--shadow)}.list{list-style:none;display:grid;gap:18px;margin-top:24px}.list li{display:flex;gap:14px;align-items:flex-start}.tick{width:27px;height:27px;flex:none;border-radius:50%;background:#e6edff;color:var(--brand);text-align:center;font-weight:bold}.list strong{display:block}.list span{color:var(--muted);font-size:14px}.updates{display:grid;gap:12px}.update{display:flex;justify-content:space-between;gap:20px;padding:18px 20px;border-bottom:1px solid var(--line)}.update:hover{background:var(--soft)}.update p{color:var(--muted);font-size:14px}.date{color:#929db0;white-space:nowrap;font-size:13px}.faq{display:grid;grid-template-columns:1fr 1fr;gap:16px}.faq details{border:1px solid var(--line);border-radius:14px;padding:18px 20px}.faq summary{font-weight:700;cursor:pointer}.faq p{color:var(--muted);margin-top:10px;font-size:14px}.cta{padding:66px 0;background:linear-gradient(110deg,#273c91,#536ee8);color:#fff;text-align:center}.cta h2{font-size:35px;margin-bottom:10px}.cta p{color:#dce4ff}.footer{padding:34px 0;background:#121b31;color:#aeb9d0}.footer-inner{display:flex;justify-content:space-between;gap:20px}.footer .logo{color:#fff}.footer a:hover{color:#fff}.copyright{font-size:13px}@media(max-width:800px){.links{gap:13px;font-size:13px}.nav-btn{display:none}.hero-grid,.feature-grid{grid-template-columns:1fr;gap:35px}.hero{padding:65px 0}.grid3{grid-template-columns:1fr 1fr}.faq{grid-template-columns:1fr}}@media(max-width:520px){.header{height:68px}.logo{font-size:16px}.links{gap:9px}.hero h1{font-size:36px;letter-spacing:-1px}.hero p{font-size:16px}.section{padding:62px 0}.grid3{grid-template-columns:1fr}.section-head h2,.cta h2{font-size:28px}.update{display:block}.date{display:block;margin-top:5px}.footer-inner{display:block}.copyright{margin-top:16px}}

/* roulang page: article */
:root{--ink:#17233c;--muted:#68748b;--brand:#3468f5;--brand2:#6b50e8;--soft:#f4f7fc;--line:#e5eaf3;--white:#fff;--radius:20px;--shadow:0 18px 50px rgba(30,48,91,.11)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.75}a{text-decoration:none;color:inherit}img{max-width:100%;display:block}.container{width:min(1160px,92%);margin:auto}
.header{height:76px;display:flex;align-items:center;border-bottom:1px solid var(--line);background:#fff}.nav{display:flex;align-items:center;justify-content:space-between}.logo{font-size:20px;font-weight:800;letter-spacing:-.5px}.logo span{color:var(--brand)}.links{display:flex;align-items:center;gap:30px}.links a{transition:.25s}.links a:hover,.links .active{color:var(--brand);font-weight:700}.nav-btn{padding:10px 20px;border-radius:10px;background:var(--ink);color:#fff!important}
.banner{padding:76px 0 70px;background:linear-gradient(100deg,rgba(17,31,72,.94),rgba(46,68,143,.72)),url('/images/sd/backpic/back-2.webp') center/cover;color:#fff}.crumb{color:#c8d5ff;font-size:14px;margin-bottom:18px}.banner h1{font-size:clamp(32px,5vw,54px);line-height:1.25;letter-spacing:-1px;margin:0 0 18px;max-width:850px}.banner p{color:#d9e1f5;max-width:760px;font-size:17px;margin:0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:44px;padding:72px 0}.article{min-width:0}.article-meta{color:var(--muted);font-size:14px;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:30px}.article-content{font-size:17px;color:#34415a}.article-content h2{font-size:29px;margin:38px 0 15px;color:var(--ink)}.article-content h3{font-size:22px;margin:30px 0 12px;color:var(--ink)}.article-content p{margin:0 0 20px}.article-content img{border-radius:16px;margin:26px 0;box-shadow:var(--shadow)}.article-content blockquote{margin:28px 0;padding:20px 24px;border-left:4px solid var(--brand);background:var(--soft);border-radius:0 12px 12px 0}
.sidebar{background:var(--soft);border-radius:var(--radius);padding:26px;height:max-content;position:sticky;top:25px}.sidebar img{border-radius:14px;height:170px;width:100%;object-fit:cover;margin-bottom:20px}.sidebar h3{font-size:20px;margin:0 0 10px}.sidebar p{font-size:14px;color:var(--muted);margin-bottom:20px}.btn{display:inline-flex;padding:12px 22px;border-radius:11px;font-weight:700;transition:.25s}.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand2);color:#fff;transform:translateY(-2px)}.empty{padding:60px 0;text-align:center}.empty h2{font-size:30px}.empty a{color:var(--brand)}
.cta{padding:60px 0;background:linear-gradient(110deg,#273c91,#536ee8);color:#fff;text-align:center}.cta h2{font-size:34px;margin:0 0 10px}.cta p{color:#dce4ff;margin-bottom:24px}
.footer{padding:34px 0;background:#121b31;color:#aeb9d0}.footer-inner{display:flex;justify-content:space-between;gap:20px;align-items:center}.footer .logo{color:#fff}.footer a:hover{color:#fff}.copyright{font-size:13px}
@media(max-width:800px){.header{height:68px}.links{gap:14px;font-size:13px}.nav-btn{display:none}.article-layout{grid-template-columns:1fr;padding:52px 0}.sidebar{position:static}.banner{padding:58px 0}.banner h1{font-size:37px}}
@media(max-width:520px){.logo{font-size:16px}.links{gap:9px}.banner h1{font-size:32px}.banner p{font-size:15px}.article-content{font-size:16px}.article-content h2{font-size:25px}.footer-inner{display:block}.copyright{margin-top:16px}}

/* roulang page: category1 */
:root{--ink:#17233c;--muted:#68748b;--brand:#3468f5;--brand2:#6b50e8;--soft:#f4f7fc;--line:#e5eaf3;--white:#fff;--radius:20px;--shadow:0 18px 50px rgba(30,48,91,.11)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.75}a{text-decoration:none;color:inherit}img{max-width:100%;display:block}.container{width:min(1160px,92%);margin:auto}.header{height:76px;display:flex;align-items:center;border-bottom:1px solid rgba(229,234,243,.8);background:#fff}.nav{display:flex;align-items:center;justify-content:space-between}.logo{font-size:20px;font-weight:800;letter-spacing:-.5px}.logo span{color:var(--brand)}.links{display:flex;align-items:center;gap:28px}.links a{transition:.25s}.links a:hover,.links .active{color:var(--brand);font-weight:700}.nav-btn{padding:10px 20px;border-radius:10px;background:var(--ink);color:#fff!important}.banner{padding:88px 0 82px;background:linear-gradient(90deg,rgba(11,26,62,.92),rgba(20,39,88,.62)),url('/images/sd/backpic/back-4.webp') center/cover}.eyebrow,.badge{display:inline-block;color:#b9caff;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);padding:5px 13px;border-radius:30px;font-size:13px}.banner h1{color:#fff;font-size:clamp(36px,5vw,60px);line-height:1.2;margin:20px 0 18px;letter-spacing:-2px}.banner p{color:#d7e0f4;font-size:18px;max-width:720px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 24px;border-radius:11px;font-weight:700;transition:.25s}.btn-primary{background:#6e8dff;color:#fff}.btn-primary:hover{background:#8ba4ff;color:#fff;transform:translateY(-2px)}.section{padding:88px 0}.section-head{max-width:700px;margin-bottom:40px}.tag{color:var(--brand);font-weight:800;font-size:13px;letter-spacing:1px}.section-head h2{font-size:35px;line-height:1.3;margin:12px 0}.section-head p,.card p,.feature p,.faq p{color:var(--muted)}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:.3s}.card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}.card img{height:190px;width:100%;object-fit:cover}.card-body{padding:24px}.card h3{font-size:20px;margin:0 0 9px}.feature{background:var(--soft)}.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:55px;align-items:center}.feature img{border-radius:22px;box-shadow:var(--shadow);width:100%;height:350px;object-fit:cover}.list{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:18px}.list li{display:flex;gap:14px;align-items:flex-start}.list li:before{content:"✓";width:27px;height:27px;flex:0 0 27px;border-radius:50%;background:#e8efff;color:var(--brand);text-align:center;font-weight:800}.list strong{display:block}.list span{color:var(--muted);font-size:14px}.process{background:#fff}.process .card{padding:26px}.step{color:var(--brand);font-size:13px;font-weight:800;letter-spacing:1px}.faq{display:grid;grid-template-columns:1fr 1fr;gap:16px}.faq details{border:1px solid var(--line);border-radius:14px;padding:18px 20px;background:#fff}.faq summary{font-weight:700;cursor:pointer}.faq p{margin:10px 0 0;font-size:14px}.cta{padding:66px 0;background:linear-gradient(110deg,#273c91,#536ee8);color:#fff;text-align:center}.cta h2{font-size:35px;margin:0 0 10px}.cta p{color:#dce4ff}.footer{padding:34px 0;background:#121b31;color:#aeb9d0}.footer-inner{display:flex;justify-content:space-between;gap:20px;align-items:center}.footer .logo{color:#fff}.footer a:hover{color:#fff}.copyright{font-size:13px}@media(max-width:800px){.links{gap:13px;font-size:13px}.nav-btn{display:none}.feature-grid{grid-template-columns:1fr}.grid3{grid-template-columns:1fr 1fr}.banner{padding:65px 0}.faq{grid-template-columns:1fr}}@media(max-width:520px){.header{height:68px}.logo{font-size:16px}.links{gap:9px}.banner h1{font-size:36px;letter-spacing:-1px}.banner p{font-size:16px}.section{padding:62px 0}.grid3{grid-template-columns:1fr}.section-head h2,.cta h2{font-size:28px}.footer-inner{display:block}.copyright{margin-top:16px}}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}