/* roulang page: index */
:root{
  --blue:#1168d8;--blue-dark:#0b397c;--cyan:#1aa9c8;--ink:#14243a;--graphite:#102238;
  --warm:#fcfdfd;--pale:#f2f7fc;--line:#dce7f2;--muted:#607086;--lime:#a4d83e;
  --white:#fff;--radius:18px;--radius-sm:11px;--shadow:0 14px 34px rgba(21,56,96,.09);
  --shadow-hover:0 20px 42px rgba(17,104,216,.16);--container:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;padding-bottom:78px;background:var(--warm);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
a{text-decoration:none;color:inherit} img{max-width:100%;display:block} button,input,select,textarea{font:inherit}
:focus-visible{outline:3px solid rgba(26,169,200,.38);outline-offset:3px}
.container{max-width:var(--container)}
.topbar{background:var(--graphite);color:#d8e5f2;font-size:13px}
.topbar-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar strong{font-weight:600;color:#fff}.topbar a{color:#d9f2ff}.topbar a:hover{color:var(--lime)}
.site-header{background:rgba(255,255,255,.97);border-bottom:1px solid rgba(220,231,242,.9);position:sticky;top:0;z-index:1040;box-shadow:0 3px 12px rgba(15,45,75,.035)}
.navbar{min-height:76px;padding:10px 0}.navbar-brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;letter-spacing:-.5px;color:var(--ink)}
.logo-mark{width:35px;height:35px;border-radius:11px;background:var(--blue);display:grid;place-items:center;color:#fff;font-size:17px;box-shadow:0 7px 15px rgba(17,104,216,.23)}
.navbar-nav{gap:2px}.nav-link{font-size:14px;color:#44556b!important;padding:10px 11px!important;border-radius:8px;font-weight:600}.nav-link:hover,.nav-link.active{background:#edf5ff;color:var(--blue)!important}
.btn{border-radius:11px;border:1px solid transparent;padding:11px 18px;font-size:14px;font-weight:700;transition:.22s ease}
.btn:hover{transform:translateY(-2px)}.btn-primary{background:var(--blue);border-color:var(--blue)}.btn-primary:hover{background:#0958be;border-color:#0958be}.btn-outline-primary{color:var(--blue);border-color:#a9cbed;background:#fff}.btn-outline-primary:hover{background:#eef6ff;color:var(--blue);border-color:var(--blue)}
.nav-cta{white-space:nowrap;padding:10px 15px}.navbar-toggler{border:1px solid var(--line);padding:8px 10px;border-radius:10px}.navbar-toggler:focus{box-shadow:none}
.offcanvas{background:var(--warm);width:min(330px,88vw)}.offcanvas-header{border-bottom:1px solid var(--line)}.offcanvas .nav-link{font-size:16px;padding:13px 12px!important}
.section{padding:100px 0;position:relative}.section-soft{background:var(--pale)}.section-title{max-width:760px;margin-bottom:40px}.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.7px;margin-bottom:10px}.eyebrow i{color:var(--lime)}
h1,h2,h3,p{margin-top:0}h1{font-size:clamp(38px,4vw,56px);line-height:1.18;letter-spacing:-1.8px;font-weight:800}h2{font-size:clamp(28px,3vw,38px);line-height:1.3;letter-spacing:-1px;font-weight:800}h3{font-size:20px;line-height:1.4;font-weight:800}p{color:var(--muted)}.section-title p{margin-bottom:0;max-width:700px}
.hero{min-height:650px;background:#eaf4fb;position:relative;overflow:hidden}.hero .carousel,.hero .carousel-inner,.hero .carousel-item{height:650px}.hero-slide{height:100%;position:relative;background-size:cover;background-position:center}.hero-slide:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(245,251,255,.98) 0%,rgba(245,251,255,.86) 37%,rgba(245,251,255,.30) 68%,rgba(245,251,255,.12) 100%)}
.hero-content{position:relative;z-index:2;height:100%;display:flex;align-items:center}.hero-copy{max-width:690px;padding:42px 0}.hero-copy h1{max-width:670px;margin:9px 0 18px}.hero-copy p{max-width:635px;font-size:16px;line-height:1.9;color:#41546b;margin-bottom:24px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px}.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:28px}.hero-tags span{border:1px solid #cfe0ef;background:rgba(255,255,255,.78);border-radius:50px;padding:6px 11px;font-size:13px;color:#496077;font-weight:600}.hero-tags i{color:var(--lime);margin-right:4px}.play-round{display:inline-grid;place-items:center;width:46px;height:46px;border-radius:50%;background:var(--lime);color:var(--graphite);font-size:18px;margin-right:9px}.carousel-control-prev,.carousel-control-next{width:7%;opacity:1}.carousel-control-prev-icon,.carousel-control-next-icon{background-color:rgba(16,34,56,.62);background-size:48%;width:42px;height:42px;border-radius:50%}.carousel-indicators [data-bs-target]{width:28px;height:4px;border:0;border-radius:4px;background-color:var(--blue)}
.people-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px}.person-card,.notfit-card{border-radius:var(--radius);padding:30px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}.person-card{display:grid;grid-template-columns:68px 1fr;gap:18px}.person-icon{width:62px;height:62px;background:#e8f4ff;color:var(--blue);border-radius:17px;display:grid;place-items:center;font-size:26px}.person-card p,.notfit-card p{font-size:14px;margin-bottom:0}.notfit-card{background:#f8fbfd;box-shadow:none}.notfit-card ul{padding:0;margin:16px 0 0;list-style:none}.notfit-card li{border-top:1px solid var(--line);padding:11px 0;font-size:14px;color:#53657a}.notfit-card i{color:var(--cyan);margin-right:7px}
.service-layout{display:grid;grid-template-columns:1fr 1.05fr;gap:70px;align-items:center}.service-image{height:440px;border-radius:24px;overflow:hidden;position:relative;box-shadow:var(--shadow)}.service-image img{width:100%;height:100%;object-fit:cover}.service-image:after{content:"HD 1080P · 25/50fps";position:absolute;bottom:17px;left:17px;background:rgba(16,34,56,.86);color:#fff;border-radius:9px;padding:7px 11px;font-size:12px;font-weight:700}.mini-specs{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0}.mini-specs span{background:#edf6ff;border:1px solid #d5e8f8;padding:7px 10px;border-radius:8px;font-size:13px;color:#31516e;font-weight:600}.check-list{padding:0;list-style:none;margin:20px 0}.check-list li{padding:7px 0;color:#4b5f75;font-size:15px}.check-list i{color:#4a9b48;margin-right:9px}
.triple-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.triple-item{display:grid;grid-template-columns:72px 1fr;gap:18px;padding:29px 23px;border-right:1px solid var(--line);height:100%}.triple-item:last-child{border-right:0}.serial{font-size:34px;font-weight:800;line-height:1;color:#b6cde6}.triple-item p{font-size:14px;margin:5px 0 0}.triple-item i{font-size:22px;color:var(--cyan);float:right}
.mosaic{display:grid;grid-template-columns:1.4fr 1fr 1fr;grid-template-rows:210px 210px;gap:17px}.scene-card{min-height:0;border-radius:17px;overflow:hidden;position:relative;color:#fff;background:#183955;box-shadow:var(--shadow)}.scene-card:first-child{grid-row:span 2}.scene-card img{width:100%;height:100%;object-fit:cover;transition:.35s ease}.scene-card:hover img{transform:scale(1.04)}.scene-card:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 34%,rgba(8,24,43,.82))}.scene-info{position:absolute;z-index:1;left:17px;right:17px;bottom:14px}.scene-info h3{font-size:18px;margin:0 0 3px}.scene-info span{font-size:12px;background:rgba(255,255,255,.18);padding:4px 8px;border-radius:20px}.progress-line{height:3px;background:rgba(255,255,255,.3);border-radius:5px;margin-top:9px}.progress-line b{display:block;width:55%;height:100%;background:var(--lime);border-radius:5px}
.trust-wrap{padding:34px;border:1px solid #dbe9f5;background:#fff;border-radius:var(--radius)}.trust-label{text-align:center;color:var(--muted);font-size:14px;margin-bottom:22px}.trust-list{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.trust-item{border:1px dashed #cbddeb;border-radius:10px;padding:14px;text-align:center;font-size:14px;color:#486078;font-weight:700;background:#fbfdff}.trust-item i{display:block;color:var(--blue);font-size:20px;margin-bottom:4px}
.compare-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}.compare-row{display:grid;grid-template-columns:1.15fr 1fr 1fr;border-bottom:1px solid var(--line)}.compare-row:last-child{border-bottom:0}.compare-row>div{padding:15px 20px;font-size:14px}.compare-row>div:nth-child(2){background:#f0f7ff;border-left:1px solid #d5e7f7;border-right:1px solid #d5e7f7;color:#174e95;font-weight:700}.compare-head{font-weight:800;background:#f8fafc}.compare-head>div:nth-child(2){background:#dff0ff}.good{color:#3f913f}.tag-hot{font-size:11px;background:var(--lime);color:#173015;border-radius:20px;padding:3px 7px;margin-left:6px}
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.adv-card{height:205px;border:1px solid var(--line);border-radius:16px;background:#fff;padding:23px;box-shadow:0 7px 20px rgba(20,52,82,.06);position:relative;overflow:hidden;transition:.25s}.adv-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#a8d1f5}.adv-card i{color:var(--blue);font-size:25px}.adv-card h3{margin:15px 0 7px;font-size:18px}.adv-card p{font-size:13px;line-height:1.65;margin:0}.adv-card:after{content:"";position:absolute;width:70px;height:4px;bottom:0;left:23px;background:var(--lime);border-radius:5px}
.media-card{border:1px solid var(--line);border-radius:17px;overflow:hidden;background:#fff;box-shadow:var(--shadow);transition:.25s}.media-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}.media-cover{height:218px;position:relative;overflow:hidden}.media-cover img{height:100%;width:100%;object-fit:cover}.media-cover:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(8,24,43,.55),transparent 50%)}.play-icon{position:absolute;z-index:1;bottom:15px;left:15px;width:38px;height:38px;border-radius:50%;background:#fff;color:var(--blue);display:grid;place-items:center}.media-body{padding:19px}.media-meta{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:10px}.media-meta span{font-size:12px;color:#526b84}.media-meta span:first-child{color:#1667bd;font-weight:700}.media-body h3{font-size:18px}.media-body p{font-size:14px;margin:0}
.case-dark{background:var(--graphite);color:#fff;overflow:hidden}.case-dark p{color:#bed0df}.case-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:72px;align-items:center}.video-sim{height:500px;max-width:360px;margin:auto;border:9px solid #29435b;border-radius:29px;background:#071421;overflow:hidden;position:relative;box-shadow:20px 22px 0 rgba(164,216,62,.12)}.video-sim img{width:100%;height:100%;object-fit:cover;opacity:.78}.video-overlay{position:absolute;inset:0;background:linear-gradient(0deg,rgba(3,11,20,.9),transparent 58%)}.shot-time{position:absolute;top:16px;left:16px;background:var(--lime);color:#183019;border-radius:6px;padding:4px 8px;font-size:11px;font-weight:800}.shot-data{position:absolute;bottom:22px;left:20px;right:20px}.shot-data strong{font-size:22px;display:block}.timeline{display:flex;gap:4px;margin-top:12px}.timeline i{height:4px;flex:1;border-radius:4px;background:#6a8296}.timeline i.active{background:var(--lime);flex:2}.case-points{padding:0;margin:23px 0;list-style:none}.case-points li{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.14);font-size:14px}.case-points i{color:var(--lime);margin-right:9px}
.story-track{display:grid;grid-template-columns:1fr 1fr;gap:20px}.story-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:25px;position:relative}.story-card:before{content:"";position:absolute;top:31px;left:0;width:4px;height:44px;background:var(--blue);border-radius:0 4px 4px 0}.story-user{display:flex;align-items:center;gap:12px;margin-bottom:18px}.avatar{width:42px;height:42px;background:#dcefff;color:var(--blue);border-radius:50%;display:grid;place-items:center;font-size:18px}.story-user b{display:block}.story-user span{font-size:12px;color:var(--muted)}.story-card p{font-size:14px;margin-bottom:15px}.steps{display:flex;gap:8px;flex-wrap:wrap}.steps span{font-size:12px;background:#f1f7fb;padding:5px 8px;border-radius:6px;color:#53708a}
.stats{background:var(--blue);color:#fff}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}.stat{padding:14px 30px;border-right:1px solid rgba(255,255,255,.25)}.stat:last-child{border:0}.stat strong{display:block;font-size:39px;line-height:1.15;font-weight:800}.stat span{font-size:13px;color:#d9ebff}.stat i{color:var(--lime);margin-right:5px}
.review-main{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:18px;padding:31px;height:100%}.quote{font-size:35px;color:var(--cyan);line-height:1}.review-main p{font-size:16px;margin:14px 0}.rating{color:#efb72e;font-size:14px}.review-small{background:#eff7ff;border-radius:16px;padding:22px;margin-bottom:17px}.review-small:last-child{margin-bottom:0}.review-small p{font-size:14px;margin:8px 0}.review-person{font-size:13px;color:#38566e;font-weight:700}
.news-layout{display:grid;grid-template-columns:1fr 1.25fr;gap:28px}.featured-news{border-radius:18px;overflow:hidden;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}.featured-news img{height:235px;width:100%;object-fit:cover}.featured-news div{padding:21px}.featured-news p{font-size:14px;margin-bottom:0}.news-list{background:#fff;border:1px solid var(--line);border-radius:18px;padding:5px 22px}.news-item{display:grid;grid-template-columns:94px 1fr auto;gap:15px;align-items:center;padding:17px 0;border-bottom:1px solid var(--line)}.news-item:last-child{border:0}.news-date{font-size:12px;color:var(--blue);font-weight:800}.news-item h3{font-size:16px;margin:0}.news-item p{font-size:13px;margin:3px 0 0}.news-arrow{color:var(--blue);font-size:19px}
.category-wall{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.category-link{background:#fff;border:1px solid var(--line);border-radius:13px;padding:16px 12px;text-align:center;font-size:14px;font-weight:700;color:#35536e;transition:.2s}.category-link i{display:block;color:var(--blue);font-size:22px;margin-bottom:7px}.category-link:hover{border-color:#96c7f5;color:var(--blue);transform:translateY(-3px)}
.accordion{--bs-accordion-border-color:var(--line);--bs-accordion-btn-focus-box-shadow:none;--bs-accordion-active-bg:#eff7ff;--bs-accordion-active-color:var(--blue)}.accordion-item{border:1px solid var(--line)!important;border-radius:11px!important;overflow:hidden;margin-bottom:10px}.accordion-button{font-weight:700;color:var(--ink);padding:18px 20px}.accordion-button:not(.collapsed){box-shadow:none}.accordion-body{color:var(--muted);font-size:14px;line-height:1.8;padding:0 20px 18px}
.guarantee{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff}.guarantee-item{padding:22px;display:flex;gap:13px;border-right:1px solid var(--line)}.guarantee-item:last-child{border:0}.guarantee-item i{color:var(--blue);font-size:25px}.guarantee-item b{font-size:15px;display:block}.guarantee-item span{font-size:12px;color:var(--muted);display:block;margin-top:3px}
.cta-box{background:#dff1ff;border-radius:24px;padding:54px;position:relative;overflow:hidden}.cta-box:after{content:"";width:300px;height:300px;border:32px solid rgba(17,104,216,.10);border-radius:50%;position:absolute;right:-95px;bottom:-185px}.cta-box>*{position:relative;z-index:1}.cta-box p{max-width:620px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}.form-grid textarea{grid-column:span 2}.form-control,.form-select{border:1px solid #bfd6e9;border-radius:9px;padding:11px 12px;background:#fff;font-size:14px}.form-control:focus,.form-select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(17,104,216,.12)}.form-status{font-size:13px;color:#3b7f3b;display:none;margin:12px 0 0}
.footer{background:var(--graphite);color:#d6e3ef;padding:67px 0 22px}.footer-brand{font-size:21px;font-weight:800;color:#fff;display:flex;align-items:center;gap:9px;margin-bottom:14px}.footer p{color:#a9bfd1;font-size:14px}.footer h3{font-size:15px;color:#fff;margin-bottom:17px}.footer-links{padding:0;list-style:none;margin:0}.footer-links li{margin:8px 0}.footer-links a{font-size:14px;color:#afc2d1}.footer-links a:hover{color:var(--lime)}.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:38px;padding-top:18px;font-size:12px;color:#8ea7ba}
.fixed-bar{position:fixed;z-index:1030;bottom:0;left:0;right:0;background:rgba(16,34,56,.98);color:#fff;border-top:1px solid rgba(255,255,255,.12)}.fixed-inner{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}.fixed-inner span{font-size:14px;color:#d3e2ee}.fixed-phone{font-weight:800;color:#fff}.fixed-phone i{color:var(--lime);margin-right:6px}.fixed-bar .btn{padding:8px 16px;background:var(--lime);border-color:var(--lime);color:#183019}
@media(max-width:1199px){.navbar-nav{gap:0}.nav-link{padding:9px 7px!important;font-size:13px}.service-layout,.case-layout{gap:42px}.section{padding:84px 0}}
@media(max-width:991px){.navbar-collapse{display:none!important}.hero,.hero .carousel,.hero .carousel-inner,.hero .carousel-item{height:590px}.people-grid,.service-layout,.case-layout,.news-layout{grid-template-columns:1fr}.service-image{order:-1;height:350px}.adv-grid{grid-template-columns:repeat(2,1fr)}.mosaic{grid-template-columns:1.25fr 1fr;grid-template-rows:190px 190px}.mosaic .scene-card:last-child{display:none}.category-wall{grid-template-columns:repeat(3,1fr)}.case-layout{gap:35px}.video-sim{height:430px}.trust-list{grid-template-columns:repeat(2,1fr)}}
@media(max-width:767px){body{padding-bottom:64px}.topbar-inner{justify-content:center;min-height:33px}.topbar-inner .top-left{display:none}.topbar-inner .top-right span{display:none}.navbar{min-height:65px}.hero,.hero .carousel,.hero .carousel-inner,.hero .carousel-item{height:570px}.hero-slide:after{background:linear-gradient(90deg,rgba(247,252,255,.97),rgba(247,252,255,.78),rgba(247,252,255,.42))}.hero-copy{padding:26px 0}.hero-copy p{font-size:15px}.carousel-control-prev,.carousel-control-next{display:none}.section{padding:66px 0}.section-title{margin-bottom:28px}.people-grid,.story-track{grid-template-columns:1fr}.triple-band{border-bottom:0}.triple-item{border-right:0;border-bottom:1px solid var(--line);padding:23px 8px}.mosaic{grid-template-columns:1fr 1fr;grid-template-rows:180px 180px}.mosaic .scene-card:first-child{grid-row:span 2}.compare-box{overflow-x:auto}.compare-row{min-width:620px}.adv-grid{grid-template-columns:1fr 1fr;gap:12px}.adv-card{height:220px;padding:18px}.media-cover{height:190px}.stats-grid{grid-template-columns:1fr 1fr}.stat{padding:20px;border-bottom:1px solid rgba(255,255,255,.25)}.stat:nth-child(2){border-right:0}.stat:nth-child(3),.stat:nth-child(4){border-bottom:0}.stat strong{font-size:31px}.guarantee{grid-template-columns:1fr 1fr}.guarantee-item:nth-child(2){border-right:0}.guarantee-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.cta-box{padding:34px 23px}.form-grid{grid-template-columns:1fr}.form-grid textarea{grid-column:auto}.footer{padding-top:52px}.footer .col-md-6{margin-bottom:24px}.fixed-inner{min-height:60px}.fixed-inner>span{display:none}.fixed-phone{font-size:14px}.fixed-bar .btn{padding:8px 13px}}
@media(max-width:575px){h1{font-size:34px}h2{font-size:27px}.hero,.hero .carousel,.hero .carousel-inner,.hero .carousel-item{height:610px}.hero-actions .btn{width:100%;text-align:center}.hero-tags span{font-size:12px}.person-card{padding:21px;grid-template-columns:54px 1fr}.person-icon{width:50px;height:50px;font-size:21px}.service-image{height:275px}.mosaic{display:grid;grid-template-columns:1fr;grid-template-rows:190px 150px 150px}.mosaic .scene-card:first-child{grid-row:auto}.mosaic .scene-card:last-child{display:block}.trust-wrap{padding:21px}.trust-list{grid-template-columns:1fr 1fr;gap:8px}.trust-item{font-size:12px;padding:11px 6px}.adv-grid{grid-template-columns:1fr}.adv-card{height:auto;min-height:178px}.category-wall{grid-template-columns:1fr 1fr}.news-item{grid-template-columns:65px 1fr}.news-arrow{display:none}.news-item p{display:none}.review-main{padding:23px}.video-sim{height:400px;width:290px}.guarantee{grid-template-columns:1fr}.guarantee-item,.guarantee-item:nth-child(2){border-right:0;border-bottom:1px solid var(--line)}.guarantee-item:last-child{border-bottom:0}.fixed-inner{gap:8px}.fixed-phone{font-size:12px}.fixed-phone i{display:none}}
@media(max-width:375px){.container{padding-left:16px;padding-right:16px}.navbar-brand{font-size:18px}.hero-copy h1{font-size:31px}.stats-grid{grid-template-columns:1fr}.stat,.stat:nth-child(2),.stat:nth-child(3){border-right:0;border-bottom:1px solid rgba(255,255,255,.25)}.stat:last-child{border-bottom:0}.category-wall{grid-template-columns:1fr}.fixed-phone{max-width:118px;overflow:hidden;white-space:nowrap}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* roulang page: category1 */
:root{
 --blue:#1168d8;--blue-dark:#0b397c;--cyan:#1aa9c8;--ink:#14243a;--graphite:#102238;
 --warm:#fcfdfd;--pale:#f2f7fc;--line:#dce7f2;--muted:#607086;--lime:#a4d83e;
 --white:#fff;--radius:18px;--radius-sm:11px;--shadow:0 14px 34px rgba(21,56,96,.09);
 --shadow-hover:0 20px 42px rgba(17,104,216,.16);--container:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;padding-bottom:78px;background:var(--warm);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(26,169,200,.35);outline-offset:3px}
.container{max-width:var(--container)}
.topbar{background:var(--graphite);color:#d8e5f2;font-size:13px}
.topbar-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar strong{font-weight:600;color:#fff}
.topbar a{color:#d9f2ff}.topbar a:hover{color:var(--lime)}
.site-header{background:rgba(255,255,255,.97);border-bottom:1px solid rgba(220,231,242,.9);position:sticky;top:0;z-index:1040;box-shadow:0 3px 12px rgba(15,45,75,.035)}
.navbar{min-height:76px;padding:10px 0}
.navbar-brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;letter-spacing:-.5px;color:var(--ink)}
.logo-mark{width:35px;height:35px;border-radius:11px;background:var(--blue);display:grid;place-items:center;color:#fff;font-size:17px;box-shadow:0 7px 15px rgba(17,104,216,.23)}
.navbar-nav{gap:2px}
.nav-link{font-size:14px;color:#44556b!important;padding:10px 11px!important;border-radius:8px;font-weight:600}
.nav-link:hover,.nav-link.active{background:#edf5ff;color:var(--blue)!important}
.btn{border-radius:11px;border:1px solid transparent;padding:11px 18px;font-size:14px;font-weight:700;transition:.22s ease;line-height:1.5}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--blue);border-color:var(--blue);color:#fff}
.btn-primary:hover{background:#0958be;border-color:#0958be;color:#fff}
.btn-outline-primary{color:var(--blue);border-color:#a9cbed;background:#fff}
.btn-outline-primary:hover{background:#eef6ff;color:var(--blue);border-color:var(--blue)}
.nav-cta{white-space:nowrap;padding:10px 15px}
.navbar-toggler{border:1px solid var(--line);padding:8px 10px;border-radius:10px}
.navbar-toggler:focus{box-shadow:none}
.offcanvas{background:var(--warm);width:min(330px,88vw)}
.offcanvas-header{border-bottom:1px solid var(--line)}
.offcanvas .nav-link{font-size:16px;padding:13px 12px!important}
.section{padding:96px 0;position:relative}
.section-soft{background:var(--pale)}
.section-title{max-width:770px;margin-bottom:38px}
.section-title h2{font-size:32px;line-height:1.35;letter-spacing:-.8px;margin:0 0 12px;font-weight:800}
.section-title p{margin:0;color:var(--muted);font-size:15px}
.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.7px;margin-bottom:10px}
.eyebrow i{color:var(--lime)}
.page-intro{background:linear-gradient(110deg,#eef7ff 0%,#f9fcff 58%,#edf6f9 100%);border-bottom:1px solid var(--line);padding:48px 0 52px;position:relative;overflow:hidden}
.page-intro:after{content:"";width:330px;height:330px;border:54px solid rgba(26,169,200,.08);border-radius:50%;position:absolute;right:-100px;top:-160px}
.breadcrumb{margin:0 0 15px;position:relative;z-index:1}
.breadcrumb-item,.breadcrumb-item a{color:#607086;font-size:14px}
.breadcrumb-item.active{color:var(--blue)}
.page-intro h1{font-size:43px;line-height:1.28;letter-spacing:-1.2px;margin:0 0 13px;font-weight:800;position:relative;z-index:1}
.page-intro p{max-width:760px;margin:0;color:#4f6277;position:relative;z-index:1}
.count-chip{display:inline-flex;align-items:center;gap:7px;margin-top:18px;padding:7px 12px;border-radius:30px;background:#fff;border:1px solid #d4e7f5;color:#37617f;font-size:13px;font-weight:700;position:relative;z-index:1}
.count-chip i{color:var(--lime)}
.filter-wrap{padding:25px 0;border-bottom:1px solid var(--line);background:#fff}
.filter-inner{display:flex;align-items:center;gap:15px}
.filter-label{white-space:nowrap;font-size:14px;font-weight:800;color:var(--ink)}
.filter-list{display:flex;gap:9px;overflow-x:auto;padding:2px 1px;scrollbar-width:none}
.filter-list::-webkit-scrollbar{display:none}
.filter-pill{white-space:nowrap;padding:8px 13px;border:1px solid var(--line);border-radius:30px;background:#fff;color:#5d6e82;font-size:13px;font-weight:700;transition:.2s}
.filter-pill:hover,.filter-pill.active{border-color:#9bc8ee;background:#edf7ff;color:var(--blue)}
.content-layout{display:grid;grid-template-columns:1.08fr .92fr;gap:26px}
.featured-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);height:100%;transition:.25s}
.featured-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#a8d1f5}
.featured-media{height:310px;position:relative;overflow:hidden;background:var(--graphite)}
.featured-media img{width:100%;height:100%;object-fit:cover;transition:.35s}
.featured-card:hover .featured-media img{transform:scale(1.04)}
.media-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 38%,rgba(10,29,51,.8) 100%)}
.play-round{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.93);color:var(--blue);font-size:20px;position:absolute;left:24px;bottom:23px;box-shadow:0 8px 18px rgba(0,0,0,.16)}
.time-badge{position:absolute;right:17px;bottom:17px;background:rgba(15,34,56,.84);color:#fff;padding:4px 9px;border-radius:7px;font-size:12px;font-weight:700}
.featured-body{padding:25px}
.meta-row{display:flex;align-items:center;flex-wrap:wrap;gap:9px;margin-bottom:11px}
.content-tag{display:inline-flex;align-items:center;gap:5px;background:#eaf5ff;color:var(--blue);padding:4px 9px;border-radius:20px;font-size:12px;font-weight:800}
.content-tag.green{background:#f0f8dc;color:#547b12}
.meta-text{font-size:12px;color:var(--muted)}
.featured-card h2{font-size:24px;line-height:1.45;margin:0 0 10px;font-weight:800}
.featured-card p{font-size:14px;color:var(--muted);margin:0 0 16px}
.clip-list{display:flex;flex-direction:column;gap:13px}
.clip-item{display:grid;grid-template-columns:145px 1fr;gap:15px;padding:11px;border:1px solid var(--line);background:#fff;border-radius:14px;transition:.22s}
.clip-item:hover{border-color:#a8d1f5;box-shadow:0 9px 22px rgba(21,56,96,.07);transform:translateX(3px)}
.clip-thumb{height:100px;border-radius:10px;overflow:hidden;position:relative;background:#1c3a58}
.clip-thumb img{width:100%;height:100%;object-fit:cover}
.clip-thumb .mini-play{position:absolute;left:9px;bottom:8px;width:27px;height:27px;border-radius:50%;background:rgba(255,255,255,.9);display:grid;place-items:center;color:var(--blue);font-size:11px}
.clip-copy{min-width:0}
.clip-copy h3{font-size:16px;line-height:1.45;margin:4px 0;color:var(--ink);font-weight:800}
.clip-copy p{margin:0;color:var(--muted);font-size:12px;line-height:1.6}
.more-link{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-size:14px;font-weight:800;margin-top:17px}
.more-link:hover{color:#0958be;gap:10px}
.dimension-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.dimension{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;min-height:130px;transition:.22s}
.dimension:hover{transform:translateY(-4px);border-color:#afd2ef;box-shadow:var(--shadow)}
.dimension i{font-size:23px;color:var(--cyan);display:block;margin-bottom:10px}
.dimension h3{font-size:15px;margin:0 0 4px;font-weight:800}
.dimension p{font-size:13px;color:var(--muted);margin:0;line-height:1.55}
.scene-stack{display:flex;flex-direction:column;gap:60px}
.scene-row{display:grid;grid-template-columns:.95fr 1.05fr;align-items:center;gap:58px}
.scene-row.reverse{grid-template-columns:1.05fr .95fr}
.scene-row.reverse .scene-image{order:2}
.scene-image{height:300px;border-radius:var(--radius);overflow:hidden;position:relative;box-shadow:var(--shadow)}
.scene-image img{width:100%;height:100%;object-fit:cover}
.scene-image:after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(17,104,216,.08),transparent 55%)}
.scene-copy h3{font-size:24px;line-height:1.4;margin:0 0 12px;font-weight:800}
.scene-copy p{color:var(--muted);margin:0 0 16px;font-size:15px}
.scene-points{margin:0;padding:0;list-style:none;display:grid;gap:8px}
.scene-points li{font-size:14px;color:#4a6076}
.scene-points i{color:#58a14b;margin-right:8px}
.creation-list{border-top:1px solid var(--line)}
.creation-item{display:grid;grid-template-columns:72px 1fr auto;align-items:center;gap:22px;padding:23px 4px;border-bottom:1px solid var(--line)}
.step-no{font-size:34px;font-weight:800;line-height:1;color:#c4dced;letter-spacing:-1px}
.creation-item h3{font-size:18px;margin:0 0 3px;font-weight:800}
.creation-item p{font-size:14px;color:var(--muted);margin:0}
.creation-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:11px;background:#edf7ff;color:var(--blue);font-size:19px}
.article-list{border-top:1px solid var(--line)}
.article-row{display:grid;grid-template-columns:175px 1fr auto;gap:22px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}
.article-row img{width:175px;height:104px;object-fit:cover;border-radius:11px}
.article-row h3{font-size:17px;line-height:1.45;margin:0 0 5px;font-weight:800}
.article-row p{font-size:13px;color:var(--muted);margin:0}
.article-arrow{width:38px;height:38px;display:grid;place-items:center;border-radius:50%;border:1px solid var(--line);color:var(--blue);transition:.2s}
.article-row:hover .article-arrow{background:var(--blue);color:#fff;border-color:var(--blue)}
.faq-side{background:var(--graphite);border-radius:var(--radius);padding:30px;color:#fff;height:100%;position:relative;overflow:hidden}
.faq-side:before{content:"";position:absolute;width:200px;height:200px;border:35px solid rgba(164,216,62,.13);border-radius:50%;right:-85px;top:-75px}
.faq-side>*{position:relative;z-index:1}
.faq-side h2{font-size:27px;line-height:1.4;margin:0 0 12px;font-weight:800}
.faq-side p{color:#c6d5e2;font-size:14px;margin-bottom:22px}
.faq-side .btn{background:#fff;color:var(--blue);border-color:#fff}
.faq-side .btn:hover{background:#eaf5ff}
.accordion{--bs-accordion-border-color:var(--line);--bs-accordion-btn-focus-box-shadow:none}
.accordion-item{border:1px solid var(--line)!important;border-radius:12px!important;overflow:hidden;margin-bottom:10px;background:#fff}
.accordion-button{padding:16px 18px;font-size:15px;font-weight:800;color:var(--ink);background:#fff;box-shadow:none!important}
.accordion-button:not(.collapsed){background:#edf7ff;color:var(--blue)}
.accordion-button::after{background-size:15px;transition:.22s}
.accordion-body{padding:0 18px 17px;background:#edf7ff;color:#53677d;font-size:14px}
.footer{background:var(--graphite);color:#c9d6e3;padding:66px 0 24px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:20px;margin-bottom:14px}
.footer p{font-size:14px;line-height:1.8;max-width:390px;color:#b4c6d6}
.footer h3{color:#fff;font-size:15px;font-weight:800;margin:5px 0 14px}
.footer-links{margin:0;padding:0;list-style:none}
.footer-links li{font-size:13px;line-height:1.8;margin-bottom:7px;color:#b8c7d5}
.footer-links a{transition:.2s}.footer-links a:hover{color:var(--lime)}
.footer-bottom{border-top:1px solid rgba(214,230,244,.16);margin-top:38px;padding-top:20px;color:#92a9bd;font-size:12px}
.fixed-bar{position:fixed;z-index:1030;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--line);box-shadow:0 -8px 26px rgba(20,48,78,.09)}
.fixed-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.fixed-note{font-size:14px;font-weight:800;color:var(--ink)}
.fixed-note span{font-size:12px;font-weight:500;color:var(--muted);margin-left:8px}
.fixed-contact{font-size:14px;color:#456078}.fixed-contact i{color:var(--blue);margin-right:5px}
@media(max-width:1199px){
 .navbar-nav .nav-link{padding:9px 7px!important;font-size:13px}.nav-cta{padding:9px 12px}
 .content-layout{grid-template-columns:1fr}.clip-list{display:grid;grid-template-columns:1fr 1fr}.dimension-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:991px){
 .navbar-collapse{display:none!important}.navbar{min-height:68px}.section{padding:74px 0}
 .page-intro{padding:38px 0 42px}.page-intro h1{font-size:36px}
 .scene-row,.scene-row.reverse{grid-template-columns:1fr;gap:28px}.scene-row.reverse .scene-image{order:0}
 .scene-stack{gap:44px}.faq-side{margin-bottom:22px}
}
@media(min-width:992px){.navbar-toggler{display:none}}
@media(max-width:767px){
 body{padding-bottom:67px;font-size:15px}.topbar-inner{min-height:34px}.topbar-inner .top-left{display:none}
 .navbar-brand{font-size:18px}.section{padding:62px 0}.section-title{margin-bottom:29px}.section-title h2{font-size:27px}
 .page-intro h1{font-size:31px}.page-intro p{font-size:14px}
 .filter-inner{align-items:flex-start;flex-direction:column;gap:8px}.filter-list{width:100%}
 .featured-media{height:245px}.featured-card h2{font-size:21px}.clip-list{grid-template-columns:1fr}
 .dimension-grid{grid-template-columns:1fr 1fr}.scene-image{height:235px}
 .creation-item{grid-template-columns:50px 1fr;gap:14px}.creation-icon{display:none}.step-no{font-size:27px}
 .article-row{grid-template-columns:105px 1fr;gap:14px}.article-row img{width:105px;height:78px}.article-arrow{display:none}
 .fixed-note span,.fixed-contact{display:none}.fixed-inner{min-height:61px}.fixed-inner .btn{padding:9px 16px;font-size:13px}
 .footer{padding-top:52px}.footer-bottom{line-height:1.8}
}
@media(max-width:520px){
 .container{padding-left:18px;padding-right:18px}.logo-mark{width:33px;height:33px}
 .page-intro{padding:31px 0 35px}.page-intro h1{font-size:29px;letter-spacing:-.8px}
 .featured-body{padding:19px}.featured-media{height:215px}.clip-item{grid-template-columns:110px 1fr;gap:11px}.clip-thumb{height:82px}
 .clip-copy h3{font-size:14px}.clip-copy p{font-size:11px}.dimension{padding:15px;min-height:122px}
 .dimension p{font-size:12px}.scene-copy h3{font-size:21px}.creation-item h3{font-size:16px}
 .faq-side{padding:25px}.faq-side h2{font-size:23px}.accordion-button{font-size:14px;padding:14px}
 .fixed-note{font-size:13px}
}
@media(max-width:375px){
 .navbar-brand{font-size:16px}.page-intro h1{font-size:27px}.dimension-grid{grid-template-columns:1fr}
 .clip-item{grid-template-columns:96px 1fr}.clip-thumb{height:76px}.fixed-inner{gap:9px}.fixed-inner .btn{padding:8px 12px}
}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* roulang page: category2 */
:root{
 --blue:#1168d8;--blue-dark:#0b397c;--cyan:#1aa9c8;--ink:#14243a;--graphite:#102238;
 --warm:#fcfdfd;--pale:#f2f7fc;--line:#dce7f2;--muted:#607086;--lime:#a4d83e;
 --white:#fff;--radius:18px;--radius-sm:11px;--shadow:0 14px 34px rgba(21,56,96,.09);
 --shadow-hover:0 20px 42px rgba(17,104,216,.16);--container:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;padding-bottom:78px;background:var(--warm);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(26,169,200,.35);outline-offset:3px}
.container{max-width:var(--container)}
.topbar{background:var(--graphite);color:#d8e5f2;font-size:13px}
.topbar-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar strong{font-weight:600;color:#fff}
.topbar a{color:#d9f2ff}.topbar a:hover{color:var(--lime)}
.site-header{background:rgba(255,255,255,.98);border-bottom:1px solid rgba(220,231,242,.9);position:sticky;top:0;z-index:1040;box-shadow:0 3px 12px rgba(15,45,75,.035)}
.navbar{min-height:76px;padding:10px 0;display:flex;gap:22px;align-items:center}
.navbar-brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;letter-spacing:-.5px;color:var(--ink);white-space:nowrap}
.logo-mark{width:35px;height:35px;border-radius:11px;background:var(--blue);display:grid;place-items:center;color:#fff;font-size:17px;box-shadow:0 7px 15px rgba(17,104,216,.23)}
.nav{display:flex;flex-direction:row!important;align-items:center;gap:2px;margin-left:auto}
.nav-link{font-size:14px;color:#44556b!important;padding:10px 11px!important;border-radius:8px;font-weight:600;white-space:nowrap}
.nav-link:hover,.nav-link.active{background:#edf5ff;color:var(--blue)!important}
.btn{border-radius:11px;border:1px solid transparent;padding:11px 18px;font-size:14px;font-weight:700;transition:transform .22s ease,background .22s ease,border-color .22s ease,box-shadow .22s ease}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--blue);border-color:var(--blue);color:#fff}
.btn-primary:hover{background:#0958be;border-color:#0958be;color:#fff;box-shadow:0 9px 18px rgba(17,104,216,.19)}
.btn-outline-primary{color:var(--blue);border-color:#a9cbed;background:#fff}
.btn-outline-primary:hover{background:#eef6ff;color:var(--blue);border-color:var(--blue)}
.nav-cta{white-space:nowrap;padding:10px 15px}
.navbar-toggler{display:none;border:1px solid var(--line);background:#fff;color:var(--ink);padding:8px 10px;border-radius:10px;font-size:20px;line-height:1}
.page-head{padding:55px 0 50px;background:linear-gradient(115deg,#eef7ff 0%,#f9fcff 58%,#edf8f7 100%);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.page-head:after{content:"";width:260px;height:260px;border:35px solid rgba(26,169,200,.08);border-radius:50%;position:absolute;right:7%;top:-150px}
.breadcrumb{margin:0 0 16px;font-size:14px;position:relative;z-index:1}
.breadcrumb-item,.breadcrumb-item a{color:#667a90}.breadcrumb-item.active{color:var(--blue)}
.page-head h1{font-size:43px;line-height:1.25;letter-spacing:-1.2px;margin:0 0 13px;font-weight:800;position:relative;z-index:1}
.page-head p{max-width:780px;margin:0;color:#50647a;font-size:16px;position:relative;z-index:1}
.result-note{display:inline-flex;align-items:center;gap:8px;margin-top:20px;background:#fff;border:1px solid #d6e7f6;border-radius:50px;padding:7px 13px;color:#38617e;font-size:13px;font-weight:700;position:relative;z-index:1}
.result-note i{color:#66a334}
.section{padding:88px 0;position:relative}
.section-soft{background:var(--pale)}
.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.7px;margin-bottom:8px}
.eyebrow i{color:var(--lime)}
.section-title{max-width:770px;margin-bottom:34px}
.section-title h2{font-size:31px;line-height:1.35;letter-spacing:-.6px;margin:0 0 10px;font-weight:800}
.section-title p{color:var(--muted);margin:0}
.filter-bar{border:1px solid var(--line);background:#fff;padding:17px 20px;border-radius:var(--radius);box-shadow:0 8px 22px rgba(20,52,82,.045);display:flex;align-items:center;gap:15px;flex-wrap:wrap}
.filter-label{font-size:14px;font-weight:800;color:var(--ink);margin-right:3px}
.filter-label i{color:var(--blue);margin-right:6px}
.filter-chips{display:flex;gap:9px;flex-wrap:wrap}
.filter-chip{border:1px solid #d8e5ef;background:#fff;color:#587087;border-radius:30px;padding:7px 13px;font-size:13px;font-weight:700;transition:.2s}
.filter-chip:hover,.filter-chip.active{border-color:#b8d9f7;background:#eef7ff;color:var(--blue)}
.filter-select{margin-left:auto;border:1px solid var(--line);border-radius:9px;color:#50677d;background:#fbfdff;padding:8px 29px 8px 12px;font-size:13px;min-width:145px}
.training-feature{height:100%;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.feature-image{height:300px;position:relative;overflow:hidden}
.feature-image img{height:100%;width:100%;object-fit:cover;transition:.35s}
.training-feature:hover .feature-image img{transform:scale(1.035)}
.video-badge{position:absolute;left:18px;bottom:16px;border-radius:50px;background:rgba(16,34,56,.9);color:#fff;padding:7px 12px;font-size:13px;font-weight:700}
.video-badge i{color:var(--lime);margin-right:5px}
.feature-body{padding:25px}
.content-label{display:inline-block;font-size:12px;font-weight:800;color:var(--blue);background:#edf6ff;padding:4px 9px;border-radius:20px;margin-bottom:10px}
.feature-body h3{font-size:23px;line-height:1.45;font-weight:800;margin:0 0 10px}
.feature-body p{color:var(--muted);font-size:14px;margin:0 0 17px}
.meta-row{display:flex;gap:13px;flex-wrap:wrap;color:#60758a;font-size:13px;border-top:1px solid var(--line);padding-top:15px}
.meta-row i{color:var(--cyan);margin-right:4px}
.content-list{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;height:100%}
.content-item{display:grid;grid-template-columns:126px 1fr auto;gap:15px;padding:14px;border-bottom:1px solid var(--line);align-items:center;transition:.2s}
.content-item:last-child{border-bottom:0}
.content-item:hover{background:#f8fbfe}
.content-thumb{width:126px;height:82px;border-radius:10px;overflow:hidden;position:relative}
.content-thumb img{width:100%;height:100%;object-fit:cover}
.content-thumb:after{content:"\F4F4";font-family:"bootstrap-icons";position:absolute;inset:0;display:grid;place-items:center;color:#fff;background:rgba(12,38,64,.28);font-size:22px}
.content-copy h3{font-size:15px;line-height:1.5;margin:0 0 4px;font-weight:800}
.content-copy p{font-size:12px;color:var(--muted);margin:0}
.mini-meta{color:#718399;font-size:12px;white-space:nowrap}
.more-link{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-size:14px;font-weight:800;margin:18px 0 0 14px;padding-bottom:18px}
.more-link:hover{color:var(--blue-dark)}.more-link i{transition:.2s}.more-link:hover i{transform:translateX(4px)}
.dimension-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.dimension-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:21px 18px;min-height:142px;transition:.22s}
.dimension-card:hover{border-color:#a8d1f5;transform:translateY(-4px);box-shadow:var(--shadow)}
.dimension-card i{font-size:23px;color:var(--blue);display:block;margin-bottom:9px}
.dimension-card strong{display:block;font-size:15px;margin-bottom:5px}.dimension-card span{font-size:13px;color:var(--muted);line-height:1.6}
.scene-row{display:grid;grid-template-columns:.94fr 1.06fr;gap:42px;align-items:center;margin-bottom:72px}
.scene-row:nth-child(even){grid-template-columns:1.06fr .94fr}.scene-row:nth-child(even) .scene-photo{order:2}
.scene-photo{height:290px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);position:relative}
.scene-photo img{height:100%;width:100%;object-fit:cover}
.scene-photo:after{content:"";position:absolute;inset:auto 0 0;height:42%;background:linear-gradient(transparent,rgba(10,33,57,.45))}
.scene-index{color:var(--cyan);font-size:13px;font-weight:800;letter-spacing:.8px;margin-bottom:9px}
.scene-copy h3{font-size:24px;font-weight:800;line-height:1.4;margin:0 0 12px}
.scene-copy p{color:var(--muted);margin:0 0 15px}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px}.scene-tags span{font-size:12px;background:#edf6ff;color:#37678f;border-radius:20px;padding:5px 10px;font-weight:700}
.point-list{max-width:990px;margin:0 auto;position:relative}
.point-list:before{content:"";position:absolute;left:29px;top:28px;bottom:28px;width:1px;background:#cce1ef}
.point-item{display:grid;grid-template-columns:60px 1fr;gap:20px;position:relative;padding:0 0 27px}
.point-item:last-child{padding-bottom:0}
.point-num{width:59px;height:59px;border-radius:17px;background:#eaf5ff;color:var(--blue);font-size:18px;font-weight:800;display:grid;place-items:center;z-index:1;border:1px solid #cce2f4}
.point-detail{padding:13px 0}.point-detail h3{font-size:18px;margin:0 0 5px;font-weight:800}.point-detail p{font-size:14px;color:var(--muted);margin:0}
.recommend-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 8px 25px rgba(20,52,82,.045)}
.recommend-item{display:grid;grid-template-columns:92px 1fr auto;gap:17px;align-items:center;padding:15px 20px;border-bottom:1px solid var(--line);transition:.2s}
.recommend-item:last-child{border-bottom:0}.recommend-item:hover{background:#f6faff}
.recommend-thumb{height:62px;border-radius:9px;overflow:hidden}.recommend-thumb img{height:100%;width:100%;object-fit:cover}
.recommend-copy h3{font-size:16px;font-weight:800;line-height:1.5;margin:0 0 3px}.recommend-copy p{font-size:13px;color:var(--muted);margin:0}
.read-arrow{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:#edf6ff;color:var(--blue);transition:.2s}.recommend-item:hover .read-arrow{background:var(--blue);color:#fff}
.faq-card{height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:27px;box-shadow:var(--shadow)}
.faq-card h2{font-size:24px;font-weight:800;line-height:1.4;margin:0 0 13px}.faq-card>p{font-size:14px;color:var(--muted);margin-bottom:20px}
.accordion-item{border:1px solid var(--line)!important;border-radius:10px!important;overflow:hidden;margin-bottom:10px}
.accordion-button{font-size:14px;font-weight:800;color:var(--ink);padding:14px 16px;box-shadow:none!important}
.accordion-button:not(.collapsed){background:#eff7ff;color:var(--blue)}
.accordion-button:after{background-size:14px}
.accordion-body{font-size:13px;color:var(--muted);padding:0 16px 15px;background:#eff7ff}
.contact-panel{height:100%;border-radius:var(--radius);padding:30px;background:var(--graphite);color:#fff;position:relative;overflow:hidden}
.contact-panel:after{content:"";position:absolute;width:180px;height:180px;border:25px solid rgba(164,216,62,.12);border-radius:50%;right:-80px;bottom:-90px}
.contact-panel>*{position:relative;z-index:1}.contact-panel .eyebrow{color:#a9ddff}.contact-panel h2{font-size:25px;line-height:1.4;font-weight:800;margin:0 0 12px}.contact-panel p{font-size:14px;color:#c5d4e2;margin-bottom:22px}
.contact-line{display:flex;gap:10px;align-items:center;font-size:14px;margin-bottom:10px;color:#ecf4fb}.contact-line i{color:var(--lime)}
.mini-form{margin-top:21px}.mini-form .form-control,.mini-form .form-select{background:rgba(255,255,255,.98);border:0;border-radius:9px;font-size:13px;padding:10px 12px}.mini-form .form-control:focus,.mini-form .form-select:focus{box-shadow:0 0 0 3px rgba(164,216,62,.23)}
.footer{background:var(--graphite);color:#b9c9d8;padding:68px 0 24px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:#fff;margin-bottom:14px}.footer p{font-size:14px;max-width:420px;margin:0;color:#b9c9d8}
.footer h3{font-size:15px;color:#fff;margin:5px 0 13px;font-weight:800}.footer-links{list-style:none;margin:0;padding:0}.footer-links li{font-size:13px;margin:8px 0;color:#b9c9d8}.footer-links a:hover{color:var(--lime)}
.footer-bottom{border-top:1px solid rgba(201,221,237,.16);padding-top:20px;margin-top:42px;font-size:12px;color:#90a6b9}
.fixed-bar{position:fixed;z-index:1030;bottom:0;left:0;right:0;background:rgba(16,34,56,.98);color:#fff;border-top:1px solid rgba(190,218,239,.16);box-shadow:0 -6px 24px rgba(12,31,52,.13)}
.fixed-inner{min-height:66px;display:flex;align-items:center;justify-content:space-between;gap:20px}.fixed-info{font-size:14px;color:#d6e4ef}.fixed-info strong{color:#fff;margin-right:9px}.fixed-info i{color:var(--lime);margin-right:5px}.fixed-actions{display:flex;align-items:center;gap:17px;font-size:14px;font-weight:700}.fixed-actions a:not(.btn){color:#dceafa}.fixed-actions a:not(.btn):hover{color:var(--lime)}
.mobile-menu-close{display:none}
@media(max-width:1199px){.nav-link{padding:9px 7px!important;font-size:13px}.navbar{gap:12px}.nav-cta{padding:9px 11px}.page-head h1{font-size:40px}}
@media(max-width:991px){
 .navbar-toggler{display:inline-grid;place-items:center;margin-left:auto}
 .nav{display:flex!important;position:fixed;top:0;right:0;bottom:0;width:min(335px,88vw);padding:82px 22px 24px!important;background:var(--warm);box-shadow:-18px 0 50px rgba(11,40,72,.17);flex-direction:column!important;align-items:stretch;gap:5px;transform:translateX(105%);transition:transform .3s ease;z-index:1060;margin:0}
 .nav.open{transform:translateX(0)}.nav-link{font-size:16px;padding:13px 12px!important}.nav-cta{display:none}.mobile-menu-close{display:grid;place-items:center;position:absolute;right:20px;top:18px;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);font-size:21px}
 .nav.open .mobile-menu-close{display:grid}.page-head{padding:45px 0}.dimension-grid{grid-template-columns:repeat(2,1fr)}.content-item{grid-template-columns:106px 1fr}.content-thumb{width:106px}.mini-meta{display:none}
}
@media(min-width:992px){.mobile-menu-close{display:none}}
@media(max-width:767px){
 body{padding-bottom:65px;font-size:15px}.topbar-inner{justify-content:center;min-height:34px}.topbar-inner span:first-child{display:none}.topbar a{font-size:12px}.navbar{min-height:67px}.navbar-brand{font-size:18px}.logo-mark{width:33px;height:33px}
 .page-head{padding:36px 0 39px}.page-head h1{font-size:32px;letter-spacing:-.7px}.page-head p{font-size:14px}.section{padding:62px 0}.section-title{margin-bottom:25px}.section-title h2{font-size:26px}
 .filter-bar{padding:14px;align-items:flex-start}.filter-chips{flex-wrap:nowrap;overflow-x:auto;width:100%;padding-bottom:3px}.filter-chip{white-space:nowrap}.filter-select{margin-left:0;width:100%}
 .training-feature{margin-bottom:18px}.feature-image{height:245px}.content-item{grid-template-columns:96px 1fr;padding:12px}.content-thumb{width:96px;height:72px}.content-copy h3{font-size:14px}
 .scene-row,.scene-row:nth-child(even){grid-template-columns:1fr;gap:22px;margin-bottom:48px}.scene-row:nth-child(even) .scene-photo{order:0}.scene-photo{height:230px}.scene-copy h3{font-size:21px}
 .dimension-card{min-height:126px;padding:17px}.recommend-item{grid-template-columns:74px 1fr auto;padding:13px}.recommend-thumb{height:56px}.recommend-copy h3{font-size:14px}.recommend-copy p{display:none}
 .faq-card,.contact-panel{padding:23px;margin-bottom:16px}.fixed-inner{min-height:57px}.fixed-info{display:none}.fixed-actions{justify-content:space-around;width:100%;gap:0}.fixed-actions .btn{padding:8px 17px}.footer{padding-top:52px}.footer-bottom{margin-top:28px;line-height:1.8}
}
@media(max-width:520px){.dimension-grid{grid-template-columns:1fr}.page-head h1{font-size:30px}.result-note{font-size:12px}.feature-body{padding:21px}.feature-body h3{font-size:20px}.content-list{border-radius:14px}.content-item{grid-template-columns:86px 1fr;gap:11px}.content-thumb{width:86px;height:67px}.content-copy p{display:none}.meta-row{gap:9px}.point-list:before{left:24px}.point-item{grid-template-columns:50px 1fr;gap:16px}.point-num{width:49px;height:49px;border-radius:14px;font-size:15px}.point-detail{padding:6px 0}.point-detail h3{font-size:16px}.read-arrow{display:none}.footer .col-6{margin-top:10px}}
@media(max-width:375px){.navbar-brand{font-size:16px}.navbar{gap:7px}.page-head h1{font-size:28px}.section-title h2{font-size:24px}.fixed-actions a:not(.btn){font-size:13px}.fixed-actions .btn{padding:8px 12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}

/* roulang page: category3 */
:root{
 --blue:#1168d8;--blue-dark:#0b397c;--cyan:#1aa9c8;--ink:#14243a;--graphite:#102238;
 --warm:#fcfdfd;--pale:#f2f7fc;--line:#dce7f2;--muted:#607086;--lime:#a4d83e;
 --white:#fff;--radius:18px;--radius-sm:11px;--shadow:0 14px 34px rgba(21,56,96,.09);
 --shadow-hover:0 20px 42px rgba(17,104,216,.16);--container:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;padding-bottom:78px;background:var(--warm);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(26,169,200,.35);outline-offset:3px}
.container{max-width:var(--container)}
.topbar{background:var(--graphite);color:#d8e5f2;font-size:13px}
.topbar-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar strong{font-weight:600;color:#fff}.topbar a{color:#d9f2ff}.topbar a:hover{color:var(--lime)}
.site-header{background:rgba(255,255,255,.97);border-bottom:1px solid rgba(220,231,242,.9);position:sticky;top:0;z-index:1040;box-shadow:0 3px 12px rgba(15,45,75,.035)}
.navbar{min-height:76px;padding:10px 0}.navbar-brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;letter-spacing:-.5px;color:var(--ink)}
.logo-mark{width:35px;height:35px;border-radius:11px;background:var(--blue);display:grid;place-items:center;color:#fff;font-size:17px;box-shadow:0 7px 15px rgba(17,104,216,.23)}
.navbar-nav{gap:2px}.nav-link{font-size:14px;color:#44556b!important;padding:10px 11px!important;border-radius:8px;font-weight:600}
.nav-link:hover,.nav-link.active{background:#edf5ff;color:var(--blue)!important}
.btn{border-radius:11px;border:1px solid transparent;padding:11px 18px;font-size:14px;font-weight:700;transition:.22s ease}
.btn:hover{transform:translateY(-2px)}.btn-primary{background:var(--blue);border-color:var(--blue)}.btn-primary:hover{background:#0958be;border-color:#0958be}
.btn-outline-primary{color:var(--blue);border-color:#a9cbed;background:#fff}.btn-outline-primary:hover{background:#eef6ff;color:var(--blue);border-color:var(--blue)}
.nav-cta{white-space:nowrap;padding:10px 15px}.navbar-toggler{border:1px solid var(--line);padding:8px 10px;border-radius:10px}.navbar-toggler:focus{box-shadow:none}
.offcanvas{background:var(--warm);width:min(330px,88vw)}.offcanvas-header{border-bottom:1px solid var(--line)}.offcanvas .nav-link{font-size:16px;padding:13px 12px!important}
.section{padding:92px 0;position:relative}.section-soft{background:var(--pale)}
.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.7px;margin-bottom:10px}.eyebrow i{color:var(--lime)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:34px}.section-head h2{font-size:32px;letter-spacing:-1px;margin:0 0 8px;font-weight:800}.section-head p{max-width:670px;color:var(--muted);margin:0}
.page-banner{background:linear-gradient(105deg,#f3f8fc 0%,#e7f2fc 54%,#f9fcfe 100%);border-bottom:1px solid var(--line);padding:48px 0 44px;overflow:hidden;position:relative}
.page-banner:after{content:"";width:390px;height:390px;border:48px solid rgba(26,169,200,.08);border-radius:50%;position:absolute;right:-100px;top:-185px}
.breadcrumb{margin:0 0 13px;position:relative;z-index:1}.breadcrumb-item,.breadcrumb-item a{font-size:13px;color:#617287}.breadcrumb-item+.breadcrumb-item:before{color:#8ea3b7}
.page-banner h1{font-size:42px;font-weight:850;letter-spacing:-1.4px;margin:0 0 12px;position:relative;z-index:1}.page-banner p{max-width:760px;margin:0;color:#52677e;position:relative;z-index:1}.content-count{display:inline-flex;gap:8px;align-items:center;margin-top:18px;color:#2860a2;font-size:13px;font-weight:700;position:relative;z-index:1}.content-count i{color:var(--lime)}
.filter-wrap{padding:27px 0;border-bottom:1px solid var(--line);background:#fff}.filter-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.filter-label{font-size:14px;font-weight:800;white-space:nowrap}.filter-pills{display:flex;gap:9px;flex-wrap:wrap}.filter-pill{border:1px solid var(--line);background:#fff;color:#52677e;border-radius:99px;padding:7px 13px;font-size:13px;font-weight:700;transition:.2s}.filter-pill:hover,.filter-pill.active{background:#edf5ff;border-color:#b9d8f4;color:var(--blue)}
.featured-card{height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.25s}.featured-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#acd2f4}
.media-cover{position:relative;overflow:hidden;background:#dae6ef}.media-cover img{width:100%;height:100%;object-fit:cover;transition:.4s}.featured-card:hover img,.content-item:hover img{transform:scale(1.035)}
.featured-card .media-cover{height:310px}.play{position:absolute;left:20px;bottom:18px;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.94);color:var(--blue);box-shadow:0 6px 18px rgba(8,44,85,.18)}
.duration{position:absolute;right:15px;bottom:16px;background:rgba(15,34,56,.84);border-radius:7px;color:#fff;padding:3px 8px;font-size:12px;font-weight:700}.content-body{padding:24px}.badge-blue{display:inline-flex;background:#edf5ff;color:var(--blue);font-size:12px;font-weight:800;padding:4px 9px;border-radius:30px}.content-body h2{font-size:23px;font-weight:800;line-height:1.45;margin:11px 0 8px}.content-body p{font-size:14px;color:var(--muted);margin:0}.meta-line{display:flex;flex-wrap:wrap;gap:13px;margin-top:17px;color:#66798d;font-size:12px}.meta-line i{color:var(--cyan);margin-right:4px}
.content-list{display:flex;flex-direction:column;gap:13px}.content-item{display:grid;grid-template-columns:150px 1fr;gap:17px;padding:13px;background:#fff;border:1px solid var(--line);border-radius:14px;transition:.22s}.content-item:hover{box-shadow:0 10px 24px rgba(20,52,82,.08);border-color:#afd1ef;transform:translateX(4px)}.content-item .media-cover{height:105px;border-radius:10px}.content-item .play{left:10px;bottom:9px;width:33px;height:33px;font-size:13px}.content-item .duration{right:8px;bottom:8px;font-size:11px;padding:2px 6px}.content-item h3{font-size:16px;line-height:1.5;font-weight:800;margin:3px 0 5px}.content-item p{font-size:13px;line-height:1.65;color:var(--muted);margin:0}
.more-link{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:14px;font-weight:800;margin-top:20px}.more-link:hover{color:var(--blue-dark);gap:11px}
.dimension-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:0 8px 24px rgba(20,52,82,.05)}.dimension{padding:23px 20px;border-right:1px solid var(--line)}.dimension:last-child{border-right:0}.dimension i{color:var(--blue);font-size:23px}.dimension strong{display:block;font-size:15px;margin:10px 0 4px}.dimension span{font-size:13px;color:var(--muted)}
.scene-row{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:62px;margin-bottom:76px}.scene-row:last-child{margin-bottom:0}.scene-row.reverse{grid-template-columns:.95fr 1.05fr}.scene-row.reverse .scene-image{order:2}.scene-image{border-radius:var(--radius);overflow:hidden;position:relative;box-shadow:var(--shadow)}.scene-image img{width:100%;height:340px;object-fit:cover}.scene-image:after{content:"";position:absolute;left:0;right:0;bottom:0;height:40%;background:linear-gradient(transparent,rgba(13,34,57,.45))}.scene-copy h2{font-size:28px;font-weight:800;line-height:1.42;margin:7px 0 13px}.scene-copy p{color:var(--muted);margin-bottom:18px}.scene-tags{display:flex;gap:8px;flex-wrap:wrap}.scene-tags span{border-radius:30px;background:#edf5ff;color:#356293;padding:5px 10px;font-size:12px;font-weight:700}
.tips-panel{background:var(--graphite);border-radius:var(--radius);padding:42px;color:#fff;overflow:hidden;position:relative}.tips-panel:before{content:"";position:absolute;width:300px;height:300px;border:1px solid rgba(164,216,62,.28);border-radius:50%;right:-110px;bottom:-175px}.tips-panel h2{font-size:30px;font-weight:800;margin:0 0 10px;position:relative}.tips-panel>p{color:#b8c9dc;max-width:640px;position:relative}.tip-list{margin-top:30px;position:relative}.tip-item{display:grid;grid-template-columns:62px 1fr;gap:18px;padding:19px 0;border-top:1px solid rgba(209,229,247,.16)}.tip-no{font-size:24px;font-weight:850;color:var(--lime);line-height:1.25}.tip-item h3{font-size:17px;margin:0 0 3px;font-weight:800}.tip-item p{font-size:14px;color:#c3d1e0;margin:0}
.related-list{border-top:1px solid var(--line)}.related-item{display:grid;grid-template-columns:86px 1fr auto;align-items:center;gap:18px;padding:15px 0;border-bottom:1px solid var(--line);transition:.2s}.related-item:hover{padding-left:8px}.related-thumb{width:86px;height:58px;border-radius:9px;overflow:hidden}.related-thumb img{width:100%;height:100%;object-fit:cover}.related-item h3{font-size:16px;margin:0 0 2px;font-weight:800}.related-item p{font-size:13px;color:var(--muted);margin:0}.related-item i{color:var(--blue);font-size:20px}
.faq-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:8px 24px;box-shadow:var(--shadow)}.accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent}.accordion-item:last-child{border-bottom:0}.accordion-button{padding:19px 0;background:transparent!important;box-shadow:none!important;color:var(--ink);font-size:16px;font-weight:800}.accordion-button:not(.collapsed){color:var(--blue)}.accordion-button:after{background-size:15px;transition:.25s}.accordion-body{padding:0 0 18px;color:var(--muted);font-size:14px}
.inquiry-card{height:100%;background:#eaf5ff;border:1px solid #cfe3f5;border-radius:var(--radius);padding:32px}.inquiry-card h2{font-size:25px;font-weight:800;line-height:1.45}.inquiry-card p{font-size:14px;color:#5a6e82}.form-control,.form-select{border:1px solid #cbddec;border-radius:10px;padding:11px 12px;color:var(--ink);background:#fff}.form-control:focus,.form-select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(17,104,216,.12)}
.footer{background:var(--graphite);color:#b9c9d9;padding:65px 0 24px}.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:20px;font-weight:800;margin-bottom:13px}.footer p{font-size:14px;max-width:420px;margin:0}.footer h3{font-size:15px;color:#fff;font-weight:800;margin:5px 0 15px}.footer-links{padding:0;margin:0;list-style:none}.footer-links li{font-size:13px;margin:8px 0}.footer-links a:hover{color:var(--lime)}.footer-bottom{border-top:1px solid rgba(208,225,241,.15);margin-top:40px;padding-top:19px;font-size:12px;color:#879ab0}
.fixed-bar{position:fixed;z-index:1030;left:0;right:0;bottom:0;background:rgba(16,34,56,.98);color:#fff;border-top:1px solid rgba(213,232,248,.18)}.fixed-inner{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:22px}.fixed-inner p{margin:0;font-size:14px;color:#d6e4f1}.fixed-inner p i{color:var(--lime);margin-right:7px}.fixed-actions{display:flex;align-items:center;gap:17px}.fixed-phone{font-weight:800;font-size:15px;color:#fff}.fixed-bar .btn{padding:9px 16px}
@media(max-width:1199px){.navbar-nav .nav-link{padding:9px 7px!important;font-size:13px}.scene-row{gap:42px}}
@media(max-width:991px){.section{padding:72px 0}.page-banner h1{font-size:36px}.section-head h2{font-size:29px}.featured-card .media-cover{height:260px}.content-list{margin-top:22px}.dimension-grid{grid-template-columns:repeat(2,1fr)}.dimension:nth-child(2){border-right:0}.dimension:nth-child(-n+2){border-bottom:1px solid var(--line)}.scene-row,.scene-row.reverse{grid-template-columns:1fr;gap:28px;margin-bottom:55px}.scene-row.reverse .scene-image{order:0}.scene-image img{height:300px}.navbar{min-height:68px}.offcanvas .btn{width:100%}}
@media(max-width:767px){body{padding-bottom:64px}.topbar-inner{justify-content:center;min-height:34px}.topbar-inner span:first-child{display:none}.topbar-inner a{font-size:12px}.page-banner{padding:34px 0}.page-banner h1{font-size:31px;line-height:1.35}.page-banner p{font-size:14px}.filter-wrap{padding:18px 0}.filter-row{align-items:flex-start;flex-direction:column;gap:8px}.filter-pills{flex-wrap:nowrap;overflow-x:auto;width:100%;padding-bottom:3px}.filter-pill{white-space:nowrap}.section-head{display:block;margin-bottom:27px}.section-head h2{font-size:26px}.section-head p{font-size:14px}.content-item{grid-template-columns:112px 1fr;gap:12px}.content-item .media-cover{height:92px}.content-item h3{font-size:15px}.content-item p{display:none}.dimension{padding:18px 15px}.tips-panel{padding:28px 23px}.tips-panel h2{font-size:25px}.tip-item{grid-template-columns:45px 1fr;gap:12px}.related-item{grid-template-columns:74px 1fr auto;gap:12px}.related-thumb{width:74px;height:54px}.related-item h3{font-size:14px}.related-item p{font-size:12px}.faq-card{padding:5px 18px}.inquiry-card{padding:27px 22px}.footer{padding-top:48px}.fixed-inner{min-height:58px}.fixed-inner p{display:none}.fixed-inner{justify-content:center}.fixed-phone{font-size:13px}.fixed-actions{width:100%;justify-content:center;gap:10px}.fixed-bar .btn{padding:8px 14px;font-size:13px}}
@media(max-width:575px){.navbar-brand{font-size:18px}.logo-mark{width:33px;height:33px}.featured-card .media-cover{height:225px}.content-body{padding:20px}.content-body h2{font-size:20px}.dimension-grid{grid-template-columns:1fr}.dimension,.dimension:nth-child(2){border-right:0;border-bottom:1px solid var(--line)}.dimension:last-child{border-bottom:0}.scene-image img{height:245px}.scene-copy h2{font-size:24px}.related-item{grid-template-columns:64px 1fr auto}.related-thumb{width:64px;height:49px}.related-item p{display:none}.footer-bottom{line-height:1.85}.fixed-phone{display:none}.fixed-actions .btn{width:calc(50vw - 22px);text-align:center}.fixed-actions{gap:8px}}
@media(max-width:375px){.page-banner h1{font-size:28px}.content-item{grid-template-columns:98px 1fr}.content-item .media-cover{height:82px}.section{padding:58px 0}.section-head h2{font-size:23px}.featured-card .media-cover{height:205px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* roulang page: category4 */
:root{
 --blue:#1168d8;--blue-dark:#0b397c;--cyan:#1aa9c8;--ink:#14243a;--graphite:#102238;
 --warm:#fcfdfd;--pale:#f2f7fc;--line:#dce7f2;--muted:#607086;--lime:#a4d83e;
 --white:#fff;--radius:18px;--radius-sm:11px;--shadow:0 14px 34px rgba(21,56,96,.09);
 --shadow-hover:0 20px 42px rgba(17,104,216,.16);--container:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;padding-bottom:78px;background:var(--warm);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(26,169,200,.35);outline-offset:3px}
.container{max-width:var(--container)}
.topbar{background:var(--graphite);color:#d8e5f2;font-size:13px}
.topbar-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar strong{font-weight:600;color:#fff}.topbar a{color:#d9f2ff}.topbar a:hover{color:var(--lime)}
.site-header{background:rgba(255,255,255,.97);border-bottom:1px solid rgba(220,231,242,.9);position:sticky;top:0;z-index:1040;box-shadow:0 3px 12px rgba(15,45,75,.035)}
.navbar{min-height:76px;padding:10px 0}.navbar-brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;letter-spacing:-.5px;color:var(--ink)}
.logo-mark{width:35px;height:35px;border-radius:11px;background:var(--blue);display:grid;place-items:center;color:#fff;font-size:17px;box-shadow:0 7px 15px rgba(17,104,216,.23)}
.navbar-nav{gap:2px}.nav-link{font-size:14px;color:#44556b!important;padding:10px 11px!important;border-radius:8px;font-weight:600}
.nav-link:hover,.nav-link.active{background:#edf5ff;color:var(--blue)!important}
.btn{border-radius:11px;border:1px solid transparent;padding:11px 18px;font-size:14px;font-weight:700;transition:transform .22s ease,background .22s ease,border-color .22s ease,box-shadow .22s ease}
.btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(0)}
.btn-primary{background:var(--blue);border-color:var(--blue)}.btn-primary:hover{background:#0958be;border-color:#0958be;box-shadow:0 9px 18px rgba(17,104,216,.2)}
.btn-outline-primary{color:var(--blue);border-color:#a9cbed;background:#fff}.btn-outline-primary:hover{background:#eef6ff;color:var(--blue);border-color:var(--blue)}
.nav-cta{white-space:nowrap;padding:10px 15px}.navbar-toggler{border:1px solid var(--line);padding:8px 10px;border-radius:10px}.navbar-toggler:focus{box-shadow:none}
.offcanvas{background:var(--warm);width:min(330px,88vw)}.offcanvas-header{border-bottom:1px solid var(--line)}.offcanvas .nav-link{font-size:16px;padding:13px 12px!important}
.section{padding:92px 0;position:relative}.section-soft{background:var(--pale)}
.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.7px;margin-bottom:9px}.eyebrow i{color:var(--lime)}
.section-heading{max-width:760px;margin-bottom:36px}.section-heading h2{font-size:33px;line-height:1.3;letter-spacing:-.8px;margin:0 0 12px;font-weight:800}.section-heading p{color:var(--muted);margin:0}
.page-head{background:linear-gradient(135deg,#f3f8fd 0%,#eef7fb 58%,#fdfefe 100%);border-bottom:1px solid var(--line);padding:58px 0 54px;overflow:hidden;position:relative}
.page-head:after{content:"";position:absolute;width:330px;height:330px;border:48px solid rgba(26,169,200,.08);border-radius:50%;right:6%;top:-170px}
.breadcrumb{position:relative;z-index:1;margin:0 0 16px;font-size:14px}.breadcrumb-item a{color:var(--muted)}.breadcrumb-item.active{color:var(--blue)}.breadcrumb-item+.breadcrumb-item:before{color:#90a1b3}
.page-head h1{position:relative;z-index:1;font-size:43px;line-height:1.25;letter-spacing:-1.2px;font-weight:850;margin:0 0 14px}.page-head p{position:relative;z-index:1;max-width:760px;color:#50657c;margin:0;font-size:16px}.content-count{position:relative;z-index:1;display:inline-flex;margin-top:19px;background:#fff;border:1px solid #d6e5f2;color:#416078;border-radius:99px;padding:7px 13px;font-size:13px;font-weight:700}.content-count i{color:var(--lime);margin-right:7px}
.filter-bar{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:17px 20px;display:flex;align-items:center;gap:16px;justify-content:space-between}.filter-label{font-size:14px;font-weight:800;white-space:nowrap;color:#35506d}.filter-list{display:flex;align-items:center;gap:9px;overflow-x:auto;padding-bottom:2px;scrollbar-width:none}.filter-list::-webkit-scrollbar{display:none}.filter-chip{white-space:nowrap;border:1px solid #d5e3ef;padding:7px 12px;border-radius:30px;background:#fff;color:#53677d;font-size:13px;font-weight:700;transition:.2s}.filter-chip:hover,.filter-chip.active{background:#eaf4ff;color:var(--blue);border-color:#afd1f2}
.feature-story{height:100%;border:1px solid var(--line);border-radius:20px;overflow:hidden;background:#fff;box-shadow:var(--shadow);transition:.25s}.feature-story:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#a8d1f5}.feature-image{height:310px;position:relative;overflow:hidden}.feature-image img{width:100%;height:100%;object-fit:cover;transition:.35s}.feature-story:hover .feature-image img{transform:scale(1.04)}.media-play{position:absolute;left:20px;bottom:18px;width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.94);color:var(--blue);display:grid;place-items:center;box-shadow:0 8px 18px rgba(12,36,60,.22)}.feature-body{padding:23px}.content-tag{display:inline-flex;background:#eaf6f8;color:#15738a;border-radius:30px;padding:4px 9px;font-size:12px;font-weight:800;margin-bottom:11px}.feature-body h3{font-size:22px;line-height:1.45;font-weight:800;margin:0 0 9px}.feature-body p{font-size:14px;color:var(--muted);margin:0 0 14px}.content-meta{display:flex;flex-wrap:wrap;gap:12px;color:#718196;font-size:13px}.content-meta i{color:var(--cyan);margin-right:4px}
.video-list{background:#fff;border:1px solid var(--line);border-radius:20px;padding:4px 22px;box-shadow:var(--shadow)}.video-row{display:grid;grid-template-columns:130px 1fr auto;gap:16px;align-items:center;padding:17px 0;border-bottom:1px solid var(--line)}.video-row:last-child{border-bottom:0}.thumb{height:79px;border-radius:10px;overflow:hidden;position:relative;background:#d8e6f1}.thumb img{width:100%;height:100%;object-fit:cover}.thumb:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(11,32,52,.25))}.video-row h3{font-size:16px;line-height:1.45;margin:0 0 5px;font-weight:800}.video-row p{font-size:13px;color:var(--muted);margin:0}.row-duration{font-size:12px;color:#587088;background:#f2f7fb;border-radius:20px;padding:5px 9px;white-space:nowrap}
.more-link{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:800;font-size:14px;margin-top:22px}.more-link i{transition:.2s}.more-link:hover i{transform:translateX(4px)}
.dimension-panel{border-radius:20px;background:var(--graphite);color:#fff;padding:34px;position:relative;overflow:hidden}.dimension-panel:after{content:"";position:absolute;width:280px;height:280px;border:1px solid rgba(255,255,255,.13);border-radius:50%;right:-90px;bottom:-120px}.dimension-panel h2{position:relative;z-index:1;font-size:27px;font-weight:800;margin-bottom:10px}.dimension-panel p{position:relative;z-index:1;color:#bfd0de;font-size:14px;max-width:620px}.dimension-tags{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:25px}.dimension-tag{border:1px solid rgba(206,228,244,.21);background:rgba(255,255,255,.05);border-radius:12px;padding:14px 12px}.dimension-tag i{font-size:19px;color:var(--lime);display:block;margin-bottom:7px}.dimension-tag strong{font-size:14px;display:block}.dimension-tag span{font-size:12px;color:#aec2d2}
.story-block{display:grid;grid-template-columns:.92fr 1.08fr;align-items:center;gap:54px;margin-bottom:70px}.story-block:last-child{margin-bottom:0}.story-block.reverse{grid-template-columns:1.08fr .92fr}.story-block.reverse .story-photo{order:2}.story-photo{border-radius:18px;overflow:hidden;box-shadow:var(--shadow);height:330px}.story-photo img{height:100%;width:100%;object-fit:cover}.story-copy h3{font-size:25px;line-height:1.4;font-weight:800;margin:0 0 13px}.story-copy p{color:var(--muted);margin-bottom:16px}.mini-points{padding:0;margin:0;list-style:none}.mini-points li{padding:7px 0;color:#455a72;font-size:14px;border-bottom:1px dashed #d9e5ee}.mini-points li:last-child{border-bottom:0}.mini-points i{color:var(--blue);margin-right:8px}
.creation-list{border-left:2px solid #c8e0f4;margin-left:12px;padding-left:36px}.creation-step{position:relative;padding:0 0 29px}.creation-step:last-child{padding-bottom:0}.step-no{position:absolute;left:-51px;top:0;width:28px;height:28px;background:var(--blue);color:#fff;border-radius:50%;font-size:12px;display:grid;place-items:center;font-weight:800;box-shadow:0 0 0 6px var(--pale)}.creation-step h3{font-size:18px;font-weight:800;margin:0 0 5px}.creation-step p{font-size:14px;color:var(--muted);margin:0;max-width:700px}.note-card{height:100%;border-radius:18px;background:#fff;border:1px solid var(--line);padding:26px;box-shadow:var(--shadow)}.note-card i{font-size:27px;color:var(--cyan)}.note-card h3{font-size:19px;font-weight:800;margin:14px 0 8px}.note-card p{font-size:14px;color:var(--muted);margin:0}.note-card .badge{margin-top:16px;background:#edf7df;color:#55761b;font-size:12px;padding:6px 10px;border-radius:20px}
.related-list{border-top:1px solid var(--line)}.related-item{display:grid;grid-template-columns:88px 1fr auto;gap:17px;align-items:center;padding:17px 0;border-bottom:1px solid var(--line);transition:.2s}.related-item:hover{padding-left:8px;background:#f8fbfe}.related-image{height:62px;border-radius:10px;overflow:hidden}.related-image img{width:100%;height:100%;object-fit:cover}.related-item h3{font-size:16px;font-weight:800;margin:0 0 3px}.related-item p{font-size:13px;color:var(--muted);margin:0}.related-item i{color:var(--blue)}
.faq-box{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}.accordion-item{border:0;border-bottom:1px solid var(--line)}.accordion-item:last-child{border-bottom:0}.accordion-button{font-weight:800;color:var(--ink);padding:18px 21px;background:#fff;box-shadow:none!important}.accordion-button:not(.collapsed){background:#eef7ff;color:var(--blue)}.accordion-button:after{background-size:15px;transition:transform .25s}.accordion-body{padding:0 21px 19px;background:#eef7ff;color:#53677c;font-size:14px}
.consult-card{height:100%;background:#eaf5ff;border:1px solid #cfe5f6;border-radius:18px;padding:31px}.consult-card h2{font-size:25px;font-weight:850;line-height:1.4;margin:0 0 10px}.consult-card p{color:#587088;font-size:14px;margin-bottom:21px}.consult-card .form-control,.consult-card .form-select{border:1px solid #cbddea;border-radius:10px;padding:11px 12px;background:#fff}.consult-card .form-control:focus,.consult-card .form-select:focus{border-color:var(--blue);box-shadow:0 0 0 .2rem rgba(17,104,216,.12)}.form-label{font-size:13px;font-weight:800;color:#3e5870;margin-bottom:5px}
.footer{background:var(--graphite);color:#c4d2de;padding:69px 0 24px}.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:21px;font-weight:850;margin-bottom:14px}.footer p{font-size:14px;max-width:420px;color:#afc0ce}.footer h3{font-size:14px;color:#fff;margin:5px 0 15px;font-weight:800}.footer-links{list-style:none;padding:0;margin:0}.footer-links li{font-size:13px;margin:8px 0;color:#b8c8d6}.footer-links a:hover{color:var(--lime)}.footer-bottom{border-top:1px solid rgba(206,227,242,.15);margin-top:42px;padding-top:19px;font-size:12px;color:#8da4b7}
.fixed-convert{position:fixed;z-index:1030;bottom:0;left:0;right:0;background:rgba(16,34,56,.98);border-top:1px solid rgba(255,255,255,.12);color:#d7e5ef}.convert-inner{min-height:66px;display:flex;align-items:center;justify-content:space-between;gap:20px}.convert-inner p{font-size:14px;margin:0}.convert-inner p strong{color:#fff}.convert-actions{display:flex;align-items:center;gap:18px}.convert-phone{font-weight:800;color:#fff;font-size:15px}.convert-phone i{color:var(--lime);margin-right:6px}.fixed-convert .btn{padding:9px 17px}
@media(max-width:1199px){.navbar-nav .nav-link{padding-left:8px!important;padding-right:8px!important;font-size:13px}.story-block,.story-block.reverse{gap:34px}.dimension-tags{grid-template-columns:repeat(2,1fr)}}
@media(max-width:991px){.navbar-collapse{display:none!important}.page-head h1{font-size:38px}.section{padding:72px 0}.story-block,.story-block.reverse{grid-template-columns:1fr;gap:28px;margin-bottom:50px}.story-block.reverse .story-photo{order:0}.story-photo{height:300px}.video-list{margin-top:22px}.filter-bar{align-items:flex-start;flex-direction:column;gap:8px}.filter-list{width:100%}.footer{padding-top:55px}}
@media(max-width:767px){body{padding-bottom:65px}.topbar-inner{min-height:34px}.topbar-inner span:first-child{display:none}.navbar{min-height:67px}.page-head{padding:42px 0}.page-head h1{font-size:32px}.page-head p{font-size:15px}.section-heading h2{font-size:27px}.feature-image{height:250px}.video-row{grid-template-columns:96px 1fr;gap:12px}.thumb{height:65px}.row-duration{display:none}.video-list{padding:3px 15px}.dimension-panel{padding:26px 21px}.dimension-tags{grid-template-columns:repeat(2,1fr);gap:9px}.dimension-tag{padding:11px}.related-item{grid-template-columns:72px 1fr auto;gap:12px}.related-image{height:56px}.convert-inner{min-height:60px}.convert-inner p{display:none}.convert-actions{width:100%;justify-content:space-between;gap:10px}.fixed-convert .btn{padding:8px 14px}.footer-bottom{line-height:1.8}}
@media(max-width:575px){.container{padding-left:18px;padding-right:18px}.topbar .topbar-inner{justify-content:center}.topbar-inner span:last-child{font-size:12px}.navbar-brand{font-size:18px}.logo-mark{width:33px;height:33px}.page-head h1{font-size:29px}.section{padding:58px 0}.section-heading{margin-bottom:27px}.section-heading h2{font-size:25px}.feature-body{padding:19px}.feature-body h3{font-size:19px}.video-row h3{font-size:14px}.video-row p{font-size:12px}.dimension-panel h2{font-size:23px}.story-photo{height:238px}.story-copy h3{font-size:22px}.creation-list{padding-left:29px}.step-no{left:-44px}.consult-card{padding:23px 19px}.footer{padding-top:48px}.footer-bottom{margin-top:28px}.btn{min-height:44px}.offcanvas .btn{width:100%}}
@media(max-width:375px){.page-head h1{font-size:27px}.dimension-tags{grid-template-columns:1fr 1fr}.dimension-tag strong{font-size:13px}.related-item{grid-template-columns:60px 1fr}.related-image{height:50px}.related-item>i{display:none}.convert-phone{font-size:13px}.fixed-convert .btn{padding:8px 11px;font-size:13px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* roulang page: category5 */
:root{
 --blue:#1168d8;--blue-dark:#0b397c;--cyan:#1aa9c8;--ink:#14243a;--graphite:#102238;
 --warm:#fcfdfd;--pale:#f2f7fc;--line:#dce7f2;--muted:#607086;--lime:#a4d83e;
 --white:#fff;--radius:18px;--radius-sm:11px;--shadow:0 14px 34px rgba(21,56,96,.09);
 --shadow-hover:0 20px 42px rgba(17,104,216,.16);--container:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;padding-bottom:78px;background:var(--warm);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.75}
a{text-decoration:none;color:inherit;transition:.22s ease}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(26,169,200,.32);outline-offset:3px}
.container{max-width:var(--container)}
.topbar{background:var(--graphite);color:#d8e5f2;font-size:13px}
.topbar-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar strong{font-weight:600;color:#fff}
.topbar a{color:#d9f2ff}
.topbar a:hover{color:var(--lime)}
.site-header{background:rgba(255,255,255,.97);border-bottom:1px solid rgba(220,231,242,.9);position:sticky;top:0;z-index:1040;box-shadow:0 3px 12px rgba(15,45,75,.035)}
.navbar{min-height:76px;padding:10px 0}
.navbar-brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;letter-spacing:-.5px;color:var(--ink)}
.logo-mark{width:35px;height:35px;border-radius:11px;background:var(--blue);display:grid;place-items:center;color:#fff;font-size:17px;box-shadow:0 7px 15px rgba(17,104,216,.23)}
.navbar-nav{gap:2px}
.nav-link{font-size:14px;color:#44556b!important;padding:10px 11px!important;border-radius:8px;font-weight:600}
.nav-link:hover,.nav-link.active{background:#edf5ff;color:var(--blue)!important}
.btn{border-radius:11px;border:1px solid transparent;padding:11px 18px;font-size:14px;font-weight:700;transition:.22s ease}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--blue);border-color:var(--blue)}
.btn-primary:hover,.btn-primary:active{background:#0958be!important;border-color:#0958be!important}
.btn-outline-primary{color:var(--blue);border-color:#a9cbed;background:#fff}
.btn-outline-primary:hover{background:#eef6ff;color:var(--blue);border-color:var(--blue)}
.nav-cta{white-space:nowrap;padding:10px 15px}
.navbar-toggler{border:1px solid var(--line);padding:8px 10px;border-radius:10px}
.navbar-toggler:focus{box-shadow:none}
.offcanvas{background:var(--warm);width:min(330px,88vw)}
.offcanvas-header{border-bottom:1px solid var(--line)}
.offcanvas .nav-link{font-size:16px;padding:13px 12px!important}
.section{padding:94px 0;position:relative}
.section-soft{background:var(--pale)}
.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.7px;margin-bottom:10px}
.eyebrow i{color:var(--lime)}
.section-title{max-width:760px;margin-bottom:38px}
.section-title h2{font-size:33px;letter-spacing:-1px;line-height:1.32;margin:0 0 12px;font-weight:800}
.section-title p{margin:0;color:var(--muted);font-size:15px}
.page-head{background:linear-gradient(105deg,#f1f7fc 0%,#f8fcff 58%,#e6f2fa 100%);border-bottom:1px solid var(--line);padding:58px 0 62px;position:relative;overflow:hidden}
.page-head:after{content:"";width:310px;height:310px;border:42px solid rgba(17,104,216,.07);border-radius:50%;position:absolute;right:6%;top:-150px}
.breadcrumb{margin:0 0 18px;position:relative;z-index:1}
.breadcrumb-item,.breadcrumb-item a{font-size:13px;color:#698096}
.breadcrumb-item.active{color:var(--blue)}
.page-head h1{position:relative;z-index:1;font-size:45px;letter-spacing:-1.5px;line-height:1.25;font-weight:800;margin:0 0 13px}
.page-head p{position:relative;z-index:1;color:#536a80;max-width:760px;margin:0;font-size:16px}
.page-meta{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.meta-pill{border:1px solid #cfe0ef;background:#fff;border-radius:50px;padding:5px 11px;font-size:13px;color:#4d6479;font-weight:600}
.meta-pill i{color:var(--cyan);margin-right:5px}
.filter-wrap{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:20px 22px;box-shadow:0 8px 22px rgba(21,56,96,.045)}
.filter-label{font-size:13px;font-weight:800;color:var(--muted);margin:0 0 10px}
.filter-row{display:flex;gap:9px;flex-wrap:wrap}
.filter-chip{display:inline-flex;min-height:36px;align-items:center;border:1px solid var(--line);background:#fff;color:#587087;border-radius:50px;padding:6px 13px;font-size:13px;font-weight:700;cursor:pointer}
.filter-chip:hover,.filter-chip.active{border-color:#b4d5f4;background:#edf6ff;color:var(--blue)}
.content-feature{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow);height:100%;transition:.25s}
.content-feature:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#aed1ee}
.feature-image{height:278px;position:relative;overflow:hidden}
.feature-image img{width:100%;height:100%;object-fit:cover;transition:.35s}
.content-feature:hover .feature-image img{transform:scale(1.04)}
.play-round{position:absolute;left:20px;bottom:18px;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(17,104,216,.32)}
.feature-body{padding:24px}
.content-type{display:inline-flex;align-items:center;gap:5px;border-radius:50px;background:#eaf5ff;color:var(--blue);font-size:12px;font-weight:800;padding:4px 9px;margin-bottom:10px}
.feature-body h2{font-size:22px;line-height:1.45;font-weight:800;margin:0 0 9px}
.feature-body p{font-size:14px;color:var(--muted);margin:0 0 17px}
.media-data{display:flex;gap:13px;flex-wrap:wrap;font-size:13px;color:#637a90}
.media-data i{color:var(--cyan);margin-right:4px}
.content-list{border-top:1px solid var(--line)}
.content-item{display:grid;grid-template-columns:116px 1fr auto;gap:17px;padding:17px 0;border-bottom:1px solid var(--line);align-items:center}
.content-thumb{width:116px;height:82px;border-radius:12px;overflow:hidden;background:#dae8f3}
.content-thumb img{width:100%;height:100%;object-fit:cover}
.content-copy h3{font-size:17px;line-height:1.45;font-weight:800;margin:0 0 4px}
.content-copy p{font-size:13px;color:var(--muted);margin:0}
.list-play{width:36px;height:36px;border:1px solid #cbe0ef;border-radius:50%;display:grid;place-items:center;color:var(--blue);background:#f7fbff}
.list-play:hover{background:var(--blue);border-color:var(--blue);color:#fff}
.more-link{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:14px;font-weight:800;margin-top:22px}
.more-link:hover{color:var(--blue-dark);gap:12px}
.dimension-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.dimension-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:19px 17px;min-height:142px}
.dimension-card i{color:var(--blue);font-size:22px}
.dimension-card h3{font-size:15px;font-weight:800;margin:10px 0 5px}
.dimension-card p{font-size:13px;line-height:1.65;color:var(--muted);margin:0}
.scene-line{display:grid;grid-template-columns:minmax(250px,.82fr) 1.18fr;gap:54px;align-items:center;margin-bottom:62px}
.scene-line.reverse{grid-template-columns:1.18fr minmax(250px,.82fr)}
.scene-line.reverse .scene-pic{order:2}
.scene-pic{height:275px;border-radius:19px;overflow:hidden;box-shadow:var(--shadow);position:relative}
.scene-pic img{width:100%;height:100%;object-fit:cover}
.scene-pic:after{content:"";position:absolute;inset:auto 0 0;height:38%;background:linear-gradient(transparent,rgba(10,31,53,.46))}
.scene-badge{position:absolute;z-index:2;bottom:15px;left:15px;background:#fff;color:var(--blue);font-size:12px;font-weight:800;border-radius:50px;padding:5px 10px}
.scene-copy h3{font-size:24px;font-weight:800;line-height:1.35;margin:0 0 12px}
.scene-copy p{color:var(--muted);margin:0 0 14px;font-size:15px}
.scene-copy ul{margin:0;padding:0;list-style:none}
.scene-copy li{font-size:14px;color:#4e657b;padding:5px 0}
.scene-copy li i{color:#4a9b48;margin-right:8px}
.note-panel{background:var(--graphite);border-radius:20px;padding:33px;color:#fff;height:100%}
.note-panel .eyebrow{color:#8fc9ff}
.note-panel h2{font-size:28px;line-height:1.38;font-weight:800;margin:0 0 16px}
.note-panel p{color:#c4d3e1;font-size:14px;margin-bottom:23px}
.timeline{margin:0;padding:0;list-style:none}
.timeline li{position:relative;padding:0 0 20px 28px;color:#e3edf6;font-size:14px}
.timeline li:last-child{padding-bottom:0}
.timeline li:before{content:"";position:absolute;left:0;top:6px;width:11px;height:11px;border-radius:50%;background:var(--lime);border:3px solid #25435d}
.timeline li:not(:last-child):after{content:"";position:absolute;left:5px;top:17px;width:1px;height:calc(100% - 5px);background:#49637b}
.timeline strong{display:block;color:#fff;font-size:15px;margin-bottom:2px}
.point-list{padding:8px 0 0;margin:0;list-style:none;counter-reset:point}
.point-list li{counter-increment:point;position:relative;padding:20px 0 20px 66px;border-bottom:1px solid var(--line);min-height:88px}
.point-list li:last-child{border-bottom:0}
.point-list li:before{content:"0" counter(point);position:absolute;left:0;top:17px;color:var(--blue);font-weight:800;font-size:22px;letter-spacing:-1px}
.point-list strong{display:block;font-size:16px;margin-bottom:2px}
.point-list span{display:block;font-size:14px;color:var(--muted)}
.recommend-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 8px 22px rgba(21,56,96,.045)}
.recommend-item{display:grid;grid-template-columns:86px 1fr auto;gap:15px;align-items:center;padding:16px 18px;border-bottom:1px solid var(--line)}
.recommend-item:last-child{border-bottom:0}
.recommend-thumb{width:86px;height:60px;border-radius:9px;overflow:hidden}
.recommend-thumb img{width:100%;height:100%;object-fit:cover}
.recommend-item h3{font-size:15px;line-height:1.45;font-weight:800;margin:0 0 3px}
.recommend-item p{font-size:12px;color:var(--muted);margin:0}
.recommend-item i{color:var(--blue)}
.faq-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:7px 22px;box-shadow:var(--shadow)}
.accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent}
.accordion-item:last-child{border-bottom:0}
.accordion-button{font-size:15px;font-weight:800;color:var(--ink);background:transparent;padding:19px 0;box-shadow:none!important}
.accordion-button:not(.collapsed){color:var(--blue);background:#f2f8ff}
.accordion-button:after{background-size:15px;transition:.22s}
.accordion-body{padding:0 18px 18px 0;color:var(--muted);font-size:14px;line-height:1.8}
.consult-box{height:100%;border-radius:20px;padding:30px;background:#eaf5fc;border:1px solid #d0e5f3;position:relative;overflow:hidden}
.consult-box:after{content:"";position:absolute;width:170px;height:170px;border:25px solid rgba(17,104,216,.08);border-radius:50%;right:-74px;top:-68px}
.consult-box>*{position:relative;z-index:1}
.consult-box h2{font-size:26px;font-weight:800;line-height:1.4;margin:0 0 10px}
.consult-box p{font-size:14px;color:#526a80;margin-bottom:18px}
.form-control,.form-select{border:1px solid #cbddeb;border-radius:10px;padding:11px 12px;color:var(--ink);background:#fff;font-size:14px}
.form-control:focus,.form-select:focus{border-color:var(--blue);box-shadow:0 0 0 .2rem rgba(17,104,216,.11)}
.form-label{font-size:13px;font-weight:800;margin-bottom:5px}
.form-label em{color:#d9485f;font-style:normal}
.form-note{font-size:12px;color:var(--muted);margin:12px 0 0}
.footer{background:var(--graphite);color:#bdd0e1;padding:68px 0 25px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:21px;font-weight:800;margin-bottom:14px}
.footer p{font-size:14px;line-height:1.8;max-width:390px;margin:0}
.footer h3{color:#fff;font-size:15px;font-weight:800;margin:4px 0 14px}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{font-size:13px;margin:0 0 9px;color:#b7c9d9}
.footer-links a:hover{color:var(--lime)}
.footer-bottom{border-top:1px solid rgba(206,224,240,.15);margin-top:42px;padding-top:20px;font-size:12px;color:#8fa6b9}
.fixed-bar{position:fixed;z-index:1030;bottom:0;left:0;right:0;background:rgba(16,34,56,.98);color:#fff;border-top:1px solid rgba(255,255,255,.12)}
.fixed-inner{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.fixed-copy{font-size:14px}
.fixed-copy strong{display:block;font-size:15px}
.fixed-copy span{color:#b8cce0;font-size:12px}
.fixed-contact{font-size:14px;color:#dcecff}
.fixed-contact i{color:var(--lime);margin-right:6px}
.fixed-bar .btn{padding:9px 16px}
@media(max-width:1199.98px){
 .navbar-nav .nav-link{padding:9px 7px!important;font-size:13px}
 .page-head h1{font-size:41px}
 .section{padding:82px 0}
}
@media(max-width:991.98px){
 .navbar-collapse{display:none!important}
 .page-head{padding:48px 0 52px}
 .page-head h1{font-size:38px}
 .dimension-grid{grid-template-columns:repeat(2,1fr)}
 .scene-line,.scene-line.reverse{grid-template-columns:1fr;gap:26px}
 .scene-line.reverse .scene-pic{order:0}
 .scene-pic{height:300px}
 .note-panel{margin-bottom:22px}
}
@media(max-width:767.98px){
 body{padding-bottom:66px;font-size:15px}
 .topbar-inner{min-height:34px}
 .topbar-inner>span{display:none}
 .topbar-inner{justify-content:center}
 .navbar{min-height:67px}
 .navbar-brand{font-size:18px}
 .section{padding:62px 0}
 .section-title{margin-bottom:28px}
 .section-title h2{font-size:27px}
 .page-head{padding:38px 0 42px}
 .page-head h1{font-size:32px}
 .page-head p{font-size:14px}
 .filter-wrap{padding:16px}
 .filter-row{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px}
 .filter-chip{white-space:nowrap}
 .content-item{grid-template-columns:94px 1fr;gap:12px}
 .content-thumb{width:94px;height:70px}
 .content-copy h3{font-size:15px}
 .content-copy p{line-height:1.55}
 .list-play{display:none}
 .dimension-grid{gap:10px}
 .dimension-card{padding:15px;min-height:130px}
 .scene-pic{height:245px}
 .scene-line{margin-bottom:42px}
 .recommend-item{grid-template-columns:72px 1fr}
 .recommend-thumb{width:72px;height:55px}
 .recommend-item>i{display:none}
 .faq-card{padding:6px 16px}
 .fixed-inner{min-height:58px}
 .fixed-copy{display:none}
 .fixed-contact{font-size:13px}
 .fixed-bar .btn{min-height:40px;padding:8px 13px}
 .footer{padding:52px 0 22px}
 .footer-bottom{margin-top:30px}
}
@media(max-width:575.98px){
 .container{padding-left:18px;padding-right:18px}
 .page-head h1{font-size:29px}
 .page-meta{gap:7px}
 .meta-pill{font-size:12px}
 .feature-image{height:225px}
 .feature-body{padding:20px}
 .feature-body h2{font-size:20px}
 .dimension-grid{grid-template-columns:1fr 1fr}
 .dimension-card h3{font-size:14px}
 .dimension-card p{font-size:12px}
 .scene-copy h3{font-size:21px}
 .consult-box{padding:24px 20px}
 .fixed-contact{display:none}
 .fixed-inner{justify-content:center}
 .fixed-inner .btn{width:calc(50% - 5px);text-align:center}
}
@media(max-width:375px){
 .navbar-brand{font-size:16px;gap:7px}
 .logo-mark{width:32px;height:32px}
 .page-head h1{font-size:27px}
 .dimension-grid{grid-template-columns:1fr}
 .fixed-inner .btn{font-size:13px;padding:8px}
}
@media(prefers-reduced-motion:reduce){
 *,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}

/* 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}