/* roulang page: index */
:root{
      --blue:#1769e8;--blue-dark:#0d47aa;--sky:#eaf3ff;--cyan:#16b8d4;--ink:#10213d;
      --text:#30415f;--muted:#71809a;--line:#dce6f3;--paper:#fff;--bg:#f6f9fe;
      --success:#08a77a;--warning:#f59c19;--radius:20px;--radius-sm:12px;
      --shadow:0 14px 38px rgba(22,67,137,.10);--shadow-lg:0 24px 60px rgba(19,70,146,.16);
      --container:1180px;
    }
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--text);background:var(--bg);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75;font-size:16px}a{text-decoration:none;color:inherit}img{display:block;max-width:100%}button,input{font:inherit}button{border:0;cursor:pointer}h1,h2,h3,h4,p{margin:0}ul{margin:0;padding:0;list-style:none}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}.section{padding:88px 0;position:relative}.section-soft{background:var(--paper)}.section-head{max-width:760px;margin-bottom:38px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.12em}.eyebrow:before{content:"";width:22px;height:2px;background:var(--cyan)}h2{color:var(--ink);font-size:clamp(28px,3vw,42px);line-height:1.28;letter-spacing:-.04em;margin:12px 0 14px}.section-head p{color:var(--muted);max-width:720px}.btn{display:inline-flex;justify-content:center;align-items:center;gap:9px;padding:13px 21px;border-radius:11px;font-weight:800;transition:.25s ease}.btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 18px rgba(23,105,232,.22)}.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 15px 24px rgba(23,105,232,.28)}.btn-light{background:#fff;color:var(--blue);border:1px solid #d7e5fd}.btn-light:hover{border-color:var(--blue);background:var(--sky)}.btn-dark{background:var(--ink);color:#fff}.btn-dark:hover{background:#1e3c69;transform:translateY(-2px)}.btn:focus,a:focus,button:focus,input:focus{outline:3px solid rgba(22,184,212,.36);outline-offset:3px}.tag{display:inline-flex;padding:5px 10px;border-radius:99px;background:#e9f2ff;color:var(--blue);font-size:12px;font-weight:800}
    header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.93);backdrop-filter:blur(15px);border-bottom:1px solid rgba(220,230,243,.86)}.topbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}.logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:22px;font-weight:900;letter-spacing:-.06em}.logo-mark{width:35px;height:35px;border-radius:11px;color:#fff;display:grid;place-items:center;background:linear-gradient(135deg,var(--blue),var(--cyan));box-shadow:0 7px 16px rgba(23,105,232,.28);font-size:17px}.nav-wrap{display:flex;align-items:center;gap:24px}.nav{display:flex;align-items:center;gap:4px}.nav a{padding:9px 11px;border-radius:8px;color:#52627d;font-size:14px;font-weight:700;white-space:nowrap;transition:.2s}.nav a:hover,.nav a.active{color:var(--blue);background:var(--sky)}.nav-cta{font-size:14px;padding:10px 16px}.mobile-toggle{display:none;background:var(--sky);color:var(--blue);border-radius:9px;width:40px;height:40px;font-size:20px}.crumb{background:#fff;border-bottom:1px solid var(--line)}.crumb .container{min-height:45px;display:flex;align-items:center;gap:9px;color:#77869f;font-size:13px}.crumb b{color:var(--blue)}.crumb span{color:#a2b0c5}
    .hero{min-height:620px;color:#fff;background:linear-gradient(90deg,rgba(8,39,93,.94) 0%,rgba(12,64,145,.78) 48%,rgba(12,100,173,.48) 100%),url('/assets/images/backpic/back-1.webp') center/cover;display:flex;align-items:center;position:relative;overflow:hidden}.hero:after{content:"";position:absolute;width:560px;height:560px;border:1px solid rgba(255,255,255,.17);border-radius:50%;right:-150px;top:-210px;box-shadow:0 0 0 50px rgba(255,255,255,.04),0 0 0 110px rgba(255,255,255,.025)}.hero-inner{position:relative;z-index:1;padding:80px 0;display:grid;grid-template-columns:1.25fr .75fr;gap:55px;align-items:center}.hero .eyebrow{color:#a8dcff}.hero .eyebrow:before{background:#a8dcff}.hero h1{font-size:clamp(37px,5.1vw,68px);line-height:1.12;letter-spacing:-.06em;max-width:770px;margin:14px 0 22px}.hero p{max-width:690px;font-size:17px;color:#dcecff;line-height:1.9}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}.hero .btn-light{background:rgba(255,255,255,.95)}.hero-data{display:flex;gap:26px;margin-top:34px}.hero-data strong{display:block;font-size:24px;line-height:1.15}.hero-data span{font-size:13px;color:#c7e3ff}.live-card{background:rgba(255,255,255,.95);color:var(--ink);padding:22px;border-radius:var(--radius);box-shadow:var(--shadow-lg);position:relative}.live-cover{height:165px;border-radius:13px;overflow:hidden;position:relative;background:url('/assets/images/coverpic/cover-1.webp') center/cover}.live-cover:after{content:"直播预告";position:absolute;left:12px;top:12px;padding:5px 10px;border-radius:99px;background:#e93c4f;color:#fff;font-size:12px;font-weight:800}.live-cover:before{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(7,29,68,.62),transparent 65%)}.live-card h3{font-size:20px;margin:18px 0 4px}.live-card p{font-size:13px;color:var(--muted);line-height:1.6}.countdown{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:17px 0}.countdown div{text-align:center;background:#f0f6ff;border-radius:9px;padding:8px}.countdown strong{display:block;color:var(--blue);font-size:20px;line-height:1.1}.countdown span{font-size:11px;color:#73819a}
    .feature-strip{margin-top:-35px;position:relative;z-index:2}.feature-strip-inner{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.strip-item{padding:23px 25px;border-right:1px solid var(--line)}.strip-item:last-child{border:0}.strip-item strong{display:block;color:var(--ink);font-size:15px;margin-bottom:3px}.strip-item span{font-size:13px;color:var(--muted)}
    .product-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:26px}.main-feature{padding:38px;background:linear-gradient(135deg,#e9f4ff,#fff);border:1px solid #dceafb;border-radius:var(--radius);overflow:hidden;position:relative}.main-feature:after{content:"28";position:absolute;right:20px;bottom:-35px;font-size:175px;line-height:1;font-weight:900;color:rgba(23,105,232,.07)}.main-feature h3{position:relative;color:var(--ink);font-size:28px;line-height:1.35;margin:17px 0 13px}.main-feature p{position:relative;max-width:570px;color:#5d6f8c}.check-list{position:relative;margin-top:24px;display:grid;gap:11px}.check-list li{padding-left:28px;position:relative;font-weight:600;font-size:14px}.check-list li:before{content:"✓";position:absolute;left:0;color:#fff;background:var(--success);width:18px;height:18px;border-radius:50%;line-height:18px;text-align:center;font-size:11px;top:4px}.small-features{display:grid;gap:20px}.feature-card{padding:25px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:.25s;display:flex;gap:18px}.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bfd8fb}.icon{flex:0 0 43px;height:43px;display:grid;place-items:center;border-radius:13px;background:var(--sky);color:var(--blue);font-size:21px}.feature-card h3{color:var(--ink);font-size:17px;margin-bottom:5px}.feature-card p{color:var(--muted);font-size:13px;line-height:1.65}
    .params{background:var(--ink);color:#fff;overflow:hidden}.params:before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-2.webp') center/cover;opacity:.13}.params .container{position:relative}.params h2{color:#fff}.params .section-head p{color:#afc5e7}.param-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:45px;align-items:center}.param-intro p{color:#c8d9f0}.param-intro .btn{margin-top:22px}.param-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.param-item{padding:20px;background:rgba(255,255,255,.08);border:1px solid rgba(196,221,255,.16);border-radius:14px}.param-item span{display:block;color:#9bc5fc;font-size:12px;margin-bottom:5px}.param-item strong{font-size:18px}.param-item p{font-size:12px;color:#b8cae3;margin-top:4px;line-height:1.6}
    .download-stage{display:grid;grid-template-columns:.88fr 1.12fr;gap:50px;align-items:center}.download-visual{position:relative;min-height:390px;padding:32px;background:#dceeff;border-radius:30px;overflow:hidden}.download-visual img{height:325px;width:100%;object-fit:cover;border-radius:17px;box-shadow:0 18px 30px rgba(13,69,145,.22)}.visual-note{position:absolute;right:18px;bottom:17px;background:#fff;padding:13px 17px;border-radius:12px;box-shadow:var(--shadow);font-size:13px;font-weight:800;color:var(--blue)}.download-copy h2{margin-top:0}.download-copy>p{color:var(--muted);margin-bottom:23px}.steps{display:grid;gap:15px}.step{display:flex;gap:15px;padding:14px 0;border-bottom:1px solid var(--line)}.step:last-child{border:0}.step-num{width:30px;height:30px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:13px;font-weight:800;flex:none}.step h3{font-size:16px;color:var(--ink);margin-bottom:3px}.step p{font-size:13px;color:var(--muted);line-height:1.6}
    .topics{background:#eef6ff}.topic-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:30px}.topic-intro{padding:31px;background:var(--blue);border-radius:var(--radius);color:#fff}.topic-intro h2{color:#fff;font-size:31px}.topic-intro p{color:#dbeaff;font-size:14px;margin:15px 0 24px}.topic-list{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.topic{padding:20px;background:#fff;border-radius:14px;border:1px solid #dce9f8;transition:.2s}.topic:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.topic b{display:block;color:var(--ink);font-size:16px;margin:9px 0 5px}.topic p{font-size:13px;color:var(--muted);line-height:1.55}.topic-symbol{font-size:22px;color:var(--cyan)}
    .news-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:28px}.news-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:0 27px}.news-item{display:grid;grid-template-columns:86px 1fr auto;gap:20px;align-items:center;padding:23px 0;border-bottom:1px solid var(--line)}.news-item:last-child{border:0}.news-date{font-size:13px;color:var(--blue);font-weight:800;line-height:1.45}.news-date strong{display:block;font-size:25px}.news-content h3{color:var(--ink);font-size:17px;line-height:1.45;margin-bottom:5px}.news-content p{font-size:13px;color:var(--muted);line-height:1.65}.read{font-size:13px;color:var(--blue);font-weight:800;white-space:nowrap}.read:hover{color:var(--blue-dark);text-decoration:underline}.news-side{border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow)}.news-side img{height:192px;width:100%;object-fit:cover}.news-side-copy{padding:25px}.news-side-copy h3{color:var(--ink);font-size:20px;margin:8px 0}.news-side-copy p{font-size:14px;color:var(--muted);margin-bottom:18px}
    .ranking-wrap{display:grid;grid-template-columns:1fr .92fr;gap:28px}.rank-box,.update-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:29px}.rank-box h3,.update-box h3{font-size:21px;color:var(--ink);margin-bottom:8px}.rank-box>p,.update-box>p{font-size:13px;color:var(--muted);margin-bottom:18px}.rank-row{display:grid;grid-template-columns:34px 1fr auto;align-items:center;gap:12px;padding:13px 0;border-bottom:1px solid #edf1f7}.rank-row:last-child{border:0}.rank-no{font-size:18px;color:#9aaac1;font-weight:900}.rank-row:nth-child(3) .rank-no,.rank-row:nth-child(4) .rank-no{color:var(--warning)}.rank-row b{font-size:14px;color:var(--ink)}.rank-row small{display:block;color:var(--muted);font-size:12px}.trend{font-size:12px;color:var(--success);font-weight:800}.update{padding:15px 0 15px 17px;border-left:2px solid #cfe3ff}.update+.update{margin-top:2px}.update b{color:var(--ink);font-size:14px}.update p{font-size:13px;color:var(--muted);line-height:1.6;margin-top:3px}.update time{font-size:11px;color:var(--blue);font-weight:800}
    .story-layout{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:center}.story-image{position:relative}.story-image img{height:390px;width:100%;object-fit:cover;border-radius:var(--radius)}.story-badge{position:absolute;bottom:-18px;left:26px;padding:18px 23px;border-radius:13px;background:#fff;box-shadow:var(--shadow);color:var(--blue);font-size:13px;font-weight:800}.story-copy p{color:var(--muted);margin:15px 0;font-size:15px}.story-copy p:first-of-type{font-size:17px;color:#475a78}.quote{margin-top:23px;padding:19px 21px;border-left:4px solid var(--cyan);background:#f2f8ff;border-radius:0 12px 12px 0;color:#365172;font-size:14px}
    .trust{padding:44px 0;background:#f0f7ff;border-top:1px solid #dae9fa;border-bottom:1px solid #dae9fa}.trust-grid{display:grid;grid-template-columns:1.1fr repeat(3,1fr);gap:18px;align-items:center}.trust-title h2{font-size:25px;margin:0}.trust-title p{font-size:13px;color:var(--muted);margin-top:5px}.trust-card{padding:15px 17px;border-left:1px solid #cedff3}.trust-card strong{display:block;font-size:23px;color:var(--blue)}.trust-card span{font-size:12px;color:var(--muted)}
    .appointment{background:linear-gradient(135deg,#1769e8,#0b4fb5);color:#fff;overflow:hidden}.appointment:after{content:"亿万28";position:absolute;right:-20px;bottom:-72px;font-size:150px;font-weight:900;opacity:.08;white-space:nowrap}.appointment .container{position:relative;z-index:1}.appointment-grid{display:grid;grid-template-columns:1fr .85fr;gap:60px;align-items:center}.appointment h2{color:#fff;margin-top:0}.appointment p{color:#dbeaff}.appointment-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:25px}.appointment-list li{font-size:13px;color:#eef6ff}.appointment-list li:before{content:"●";color:#6be2ee;margin-right:8px}.form-card{background:#fff;color:var(--text);padding:27px;border-radius:var(--radius);box-shadow:var(--shadow-lg)}.form-card h3{color:var(--ink);font-size:21px;margin-bottom:5px}.form-card p{color:var(--muted);font-size:13px;margin-bottom:17px}.form-row{display:grid;gap:10px}.form-card input{width:100%;padding:12px 13px;border:1px solid var(--line);border-radius:9px;color:var(--ink);background:#fbfdff}.form-card input::placeholder{color:#a3afc1}.form-card .btn{width:100%;margin-top:3px}.form-tip{display:block;margin-top:11px;font-size:11px;color:#8996a9}
    .faq-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:48px}.faq-intro p{color:var(--muted)}.faq-list{display:grid;gap:11px}.faq{border:1px solid var(--line);border-radius:13px;background:#fff;padding:17px 20px}.faq summary{cursor:pointer;color:var(--ink);font-weight:800;list-style:none;position:relative;padding-right:25px}.faq summary:after{content:"+";position:absolute;right:0;color:var(--blue);font-size:22px;top:-5px}.faq[open] summary:after{content:"−"}.faq p{padding-top:11px;color:var(--muted);font-size:14px;line-height:1.8}
    .final-cta{padding:76px 0;background:#fff}.final-box{padding:46px;display:flex;align-items:center;justify-content:space-between;gap:25px;border-radius:24px;background:linear-gradient(110deg,#eaf4ff,#fff 68%);border:1px solid #d7e7fb}.final-box h2{font-size:32px;margin:0 0 8px}.final-box p{color:var(--muted);max-width:650px}.footer{background:#0c1d38;color:#b9c8dd;padding:55px 0 25px}.footer-grid{display:grid;grid-template-columns:1.3fr repeat(2,.7fr);gap:32px;padding-bottom:36px;border-bottom:1px solidrgba(185,200,221,.18)}.footer .logo{color:#fff}.footer-brand p{font-size:13px;line-height:1.8;max-width:360px;margin-top:15px}.footer h4{color:#fff;font-size:15px;margin:5px 0 13px}.footer-links{display:grid;gap:8px}.footer-links a{font-size:13px;transition:.2s}.footer-links a:hover{color:#73b7ff}.footer-bottom{padding-top:20px;display:flex;justify-content:space-between;gap:18px;align-items:center;font-size:12px;flex-wrap:wrap}.footer-bottom a:hover{color:#73b7ff}
    .float-bar{position:fixed;right:22px;bottom:22px;z-index:15;display:flex;gap:8px}.float-bar a{width:46px;height:46px;display:grid;place-items:center;border-radius:50%;background:var(--blue);color:#fff;box-shadow:0 9px 24px rgba(23,105,232,.32);font-weight:900;transition:.2s}.float-bar a:hover{transform:translateY(-3px);background:var(--blue-dark)}
    @media(max-width:1024px){.nav{gap:0}.nav a{padding:8px 7px;font-size:13px}.hero-inner{gap:28px}.topic-layout,.ranking-wrap{gap:20px}.story-layout{gap:30px}}@media(max-width:768px){.container{width:min(100% - 32px,640px)}.section{padding:62px 0}.topbar{height:67px}.mobile-toggle{display:grid;place-items:center}.nav-wrap>.nav,.nav-cta{display:none}.nav-wrap.open .nav{display:flex;position:absolute;left:16px;right:16px;top:62px;background:#fff;box-shadow:var(--shadow);border:1px solid var(--line);padding:12px;flex-direction:column;align-items:stretch;border-radius:14px}.nav-wrap.open .nav a{padding:11px}.hero{min-height:auto}.hero-inner,.product-grid,.param-layout,.download-stage,.topic-layout,.news-layout,.ranking-wrap,.story-layout,.appointment-grid,.faq-grid{grid-template-columns:1fr}.hero-inner{padding:62px 0}.hero h1{font-size:42px}.live-card{max-width:470px}.feature-strip{margin-top:0;background:#fff}.feature-strip-inner{border-radius:0;box-shadow:none;grid-template-columns:repeat(2,1fr)}.strip-item:nth-child(2){border-right:0}.strip-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.param-list{grid-template-columns:repeat(2,1fr)}.download-visual{min-height:300px}.download-visual img{height:270px}.trust-grid{grid-template-columns:repeat(2,1fr)}.trust-title{grid-column:1/-1}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}@media(max-width:520px){body{font-size:15px}.hero h1{font-size:35px}.hero p{font-size:15px}.hero-data{gap:16px}.hero-data strong{font-size:20px}.hero-actions,.final-box{align-items:stretch;flex-direction:column}.hero-actions .btn{width:100%}.feature-strip-inner,.topic-list,.param-list,.appointment-list{grid-template-columns:1fr}.strip-item{border-right:0!important;border-bottom:1px solid var(--line)}.strip-item:last-child{border-bottom:0}.section-head{margin-bottom:26px}.main-feature{padding:27px}.news-list{padding:0 17px}.news-item{grid-template-columns:60px 1fr;gap:12px}.news-item .read{grid-column:2}.news-date strong{font-size:20px}.news-side{display:none}.trust-grid{grid-template-columns:1fr}.trust-card{border-left:0;border-top:1px solid #cedff3}.story-image img{height:280px}.final-box{padding:29px}.final-box h2{font-size:27px}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.footer-bottom{align-items:flex-start;flex-direction:column}.float-bar{right:14px;bottom:14px}.crumb{overflow:auto;white-space:nowrap}}

/* roulang page: category2 */
:root{--blue:#1769e8;--blue-dark:#0d47aa;--sky:#eaf3ff;--cyan:#16b8d4;--ink:#10213d;--text:#30415f;--muted:#71809a;--line:#dce6f3;--paper:#fff;--bg:#f6f9fe;--success:#08a77a;--warning:#f59c19;--radius:20px;--radius-sm:12px;--shadow:0 14px 38px rgba(22,67,137,.10);--shadow-lg:0 24px 60px rgba(19,70,146,.16);--container:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75}a{text-decoration:none;color:inherit}img{display:block;max-width:100%}button,input{font:inherit}button{border:0;cursor:pointer}.container{width:min(var(--container),calc(100% - 48px));margin:auto}.section{padding:82px 0;position:relative}.section-soft{background:var(--paper)}.section-head{max-width:740px;margin-bottom:36px}.section-head h2{margin:12px 0;font-size:clamp(28px,4vw,44px);line-height:1.25;color:var(--ink);letter-spacing:-.04em}.section-head p{color:var(--muted);margin:0}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.12em}.eyebrow:before{content:"";width:22px;height:2px;background:var(--cyan)}.btn{display:inline-flex;justify-content:center;align-items:center;gap:9px;padding:13px 21px;border-radius:11px;font-weight:800;transition:.25s ease}.btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 18px rgba(23,105,232,.22)}.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px)}.btn-light{background:#fff;color:var(--blue);border:1px solid #d7e5fd}.btn-light:hover{border-color:var(--blue);background:var(--sky)}.btn-dark{background:var(--ink);color:#fff}.btn-dark:hover{background:#1e3c69;transform:translateY(-2px)}.btn:focus,a:focus,button:focus,input:focus{outline:3px solid rgba(22,184,212,.36);outline-offset:3px}.tag{display:inline-flex;padding:5px 10px;border-radius:99px;background:#e9f2ff;color:var(--blue);font-size:12px;font-weight:800}
header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(15px);border-bottom:1px solid rgba(220,230,243,.86)}.topbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}.logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:22px;font-weight:900;letter-spacing:-.06em}.logo-mark{width:35px;height:35px;border-radius:11px;color:#fff;display:grid;place-items:center;background:linear-gradient(135deg,var(--blue),var(--cyan));box-shadow:0 7px 16px rgba(23,105,232,.28);font-size:17px}.nav-wrap{display:flex;align-items:center;gap:24px}.nav{display:flex;align-items:center;gap:4px}.nav a{padding:9px 11px;border-radius:8px;color:#52627d;font-size:14px;font-weight:700;white-space:nowrap;transition:.2s}.nav a:hover,.nav a.active{color:var(--blue);background:var(--sky)}.mobile-toggle{display:none;background:var(--sky);color:var(--blue);border-radius:9px;width:40px;height:40px;font-size:20px}.crumb{background:#fff;border-bottom:1px solid var(--line)}.crumb .container{min-height:48px;display:flex;align-items:center;gap:9px;color:#77869f;font-size:13px}.crumb a{color:var(--blue)}.hero{min-height:570px;color:#fff;background:linear-gradient(90deg,rgba(8,39,93,.95),rgba(12,64,145,.78),rgba(12,100,173,.45)),url('/assets/images/backpic/back-2.webp') center/cover;display:flex;align-items:center;position:relative;overflow:hidden}.hero:after{content:"28";position:absolute;right:4%;bottom:-90px;font-size:380px;font-weight:900;line-height:1;color:rgba(255,255,255,.06)}.hero-inner{position:relative;z-index:1;padding:74px 0;display:grid;grid-template-columns:1.1fr .9fr;gap:62px;align-items:center}.hero .eyebrow{color:#a8dcff}.hero .eyebrow:before{background:#a8dcff}.hero h1{font-size:clamp(38px,5vw,65px);line-height:1.12;letter-spacing:-.06em;margin:14px 0 20px;max-width:700px}.hero p{max-width:680px;color:#dcecff;font-size:17px;line-height:1.9}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.hero-data{display:flex;gap:32px;margin-top:30px}.hero-data strong{display:block;font-size:25px;line-height:1.2}.hero-data span{font-size:13px;color:#c7e3ff}.flash-card{background:rgba(255,255,255,.96);color:var(--ink);padding:26px;border-radius:var(--radius);box-shadow:var(--shadow-lg);position:relative}.flash-top{display:flex;justify-content:space-between;align-items:center}.flash-top .tag{background:#fff0d7;color:#c56d00}.flash-card h3{font-size:25px;line-height:1.35;margin:20px 0 8px}.flash-card p{color:var(--muted);font-size:14px;line-height:1.65}.flash-card img{height:142px;width:100%;object-fit:cover;border-radius:14px;margin:18px 0}.countdown{display:flex;gap:8px;margin:17px 0}.time{background:#edf4ff;border-radius:9px;min-width:52px;text-align:center;padding:7px 4px;color:var(--blue);font-weight:900}.time small{display:block;color:var(--muted);font-size:10px;font-weight:600}.trust{margin-top:-32px;position:relative;z-index:2}.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.trust-item{padding:22px 25px;border-right:1px solid var(--line)}.trust-item:last-child{border:0}.trust-item strong{display:block;color:var(--ink);font-size:15px}.trust-item span{font-size:13px;color:var(--muted)}.split{display:grid;grid-template-columns:.82fr 1.18fr;gap:55px;align-items:center}.split img{width:100%;height:360px;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow)}.split h2{color:var(--ink);font-size:clamp(28px,4vw,43px);line-height:1.28;margin:12px 0 17px}.split p{color:var(--muted)}.check-list{list-style:none;padding:0;margin:25px 0;display:grid;gap:13px}.check-list li{padding-left:31px;position:relative;font-weight:600}.check-list li:before{content:"✓";position:absolute;left:0;top:4px;width:19px;height:19px;text-align:center;line-height:19px;color:#fff;background:var(--success);border-radius:50%;font-size:11px}.feature-layout{display:grid;grid-template-columns:1fr 1fr;gap:22px}.feature-card{padding:27px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:.25s}.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bfd8fb}.feature-card .num{color:var(--cyan);font-weight:900;font-size:13px}.feature-card h3{color:var(--ink);font-size:20px;margin:12px 0 7px}.feature-card p{font-size:14px;color:var(--muted);margin:0}.scene-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}.scene-main{min-height:285px;background:linear-gradient(135deg,#0e4ca8,#1769e8);color:#fff;padding:34px;border-radius:var(--radius);position:relative;overflow:hidden}.scene-main:after{content:"";position:absolute;width:260px;height:260px;border:35px solid rgba(255,255,255,.09);border-radius:50%;right:-70px;bottom:-110px}.scene-main h3{font-size:29px;margin:15px 0 10px;position:relative;z-index:1}.scene-main p{max-width:490px;color:#d9eaff;position:relative;z-index:1}.scene-list{display:grid;gap:22px}.scene-item{background:#fff;padding:24px;border:1px solid var(--line);border-radius:var(--radius-sm)}.scene-item h3{color:var(--ink);margin:0 0 5px;font-size:18px}.scene-item p{color:var(--muted);font-size:14px;margin:0}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.step{background:#fff;border:1px solid var(--line);border-radius:16px;padding:23px;position:relative}.step-number{width:35px;height:35px;border-radius:10px;display:grid;place-items:center;color:#fff;background:var(--blue);font-weight:900}.step h3{color:var(--ink);font-size:17px;margin:16px 0 6px}.step p{font-size:13px;color:var(--muted);margin:0}.proof{display:grid;grid-template-columns:.75fr 1.25fr;gap:25px;align-items:stretch}.proof-stat{background:var(--ink);border-radius:var(--radius);padding:35px;color:#fff}.proof-stat strong{font-size:54px;line-height:1;display:block;color:#8edfff;margin:20px 0}.proof-stat p{color:#c3d4eb}.proof-content{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px}.proof-content h3{color:var(--ink);font-size:25px;margin:0 0 12px}.quote{border-left:3px solid var(--cyan);padding-left:18px;color:#526681;margin:22px 0}.faq-grid{display:grid;grid-template-columns:.7fr 1.3fr;gap:45px}.faq-grid h2{color:var(--ink);font-size:36px;line-height:1.3;margin:10px 0}.faq-list{display:grid;gap:12px}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:13px;padding:17px 20px}.faq-list summary{cursor:pointer;color:var(--ink);font-weight:800}.faq-list p{color:var(--muted);font-size:14px;margin:12px 0 0}.cta{background:linear-gradient(110deg,#0d47aa,#1769e8);color:#fff;border-radius:var(--radius);padding:43px 48px;display:flex;justify-content:space-between;align-items:center;gap:30px}.cta h2{font-size:32px;line-height:1.3;margin:0 0 8px}.cta p{margin:0;color:#d9eaff}.footer{background:#0c1d38;color:#c7d5e9;padding:58px 0 22px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:50px}.footer .logo{color:#fff}.footer-brand p{max-width:390px;color:#9fb2ce;font-size:14px}.footer h4{color:#fff;margin:0 0 15px}.footer-links{display:grid;gap:8px;font-size:14px;color:#aabbd1}.footer-links a:hover{color:#73dff2}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.12);margin-top:42px;padding-top:20px;color:#8fa4c0;font-size:12px}.footer-bottom a{color:#b9cee8}.footer-bottom a:hover{color:#fff}
@media(max-width:1024px){.nav{gap:0}.nav a{padding:8px 7px;font-size:13px}.hero-inner{gap:30px}.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.container{width:min(100% - 32px,var(--container))}.topbar{height:68px}.mobile-toggle{display:block}.nav-wrap{position:relative}.nav{display:none;position:absolute;right:0;top:50px;width:235px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav.open{display:flex}.nav a{padding:12px}.hero-inner,.split,.proof,.faq-grid,.scene-grid{grid-template-columns:1fr}.hero{min-height:auto}.hero-inner{padding:65px 0}.hero h1{font-size:43px}.flash-card{max-width:500px}.trust-grid{grid-template-columns:1fr 1fr}.trust-item:nth-child(2){border-right:0}.trust-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.feature-layout{grid-template-columns:1fr}.split img{height:280px}.proof-stat{min-height:240px}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-bottom{flex-direction:column}.cta{align-items:flex-start;flex-direction:column;padding:34px 26px}}
@media(max-width:520px){.section{padding:62px 0}.hero h1{font-size:37px}.hero p{font-size:15px}.hero-data{gap:20px}.hero-data strong{font-size:21px}.trust-grid{grid-template-columns:1fr}.trust-item{border-right:0!important;border-bottom:1px solid var(--line)}.trust-item:last-child{border-bottom:0}.steps{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.cta h2{font-size:27px}.split img{height:230px}}

/* roulang page: category3 */
:root{
      --blue:#1769e8;--blue-dark:#0d47aa;--sky:#eaf3ff;--cyan:#16b8d4;--ink:#10213d;
      --text:#30415f;--muted:#71809a;--line:#dce6f3;--paper:#fff;--bg:#f6f9fe;
      --success:#08a77a;--warning:#f59c19;--danger:#e55c63;--radius:20px;--radius-sm:12px;
      --shadow:0 14px 38px rgba(22,67,137,.10);--shadow-lg:0 24px 60px rgba(19,70,146,.16);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--text);background:var(--bg);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75;font-size:16px}
    a{text-decoration:none;color:inherit}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    h1,h2,h3,h4,p{margin-top:0}
    ul,ol{margin:0;padding:0;list-style:none}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .section{padding:82px 0;position:relative}
    .section-soft{background:var(--paper)}
    .section-tint{background:linear-gradient(180deg,#f8fbff 0%,#edf5ff 100%)}
    .section-head{max-width:760px;margin-bottom:36px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--cyan)}
    .section-head h2{color:var(--ink);font-size:clamp(26px,3.4vw,40px);line-height:1.28;letter-spacing:-.04em;margin:12px 0}
    .section-head p{color:var(--muted);margin-bottom:0}
    .btn{display:inline-flex;justify-content:center;align-items:center;gap:9px;padding:13px 21px;border-radius:11px;font-weight:800;transition:.25s ease}
    .btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 18px rgba(23,105,232,.22)}
    .btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 15px 24px rgba(23,105,232,.28)}
    .btn-light{background:#fff;color:var(--blue);border:1px solid #d7e5fd}
    .btn-light:hover{border-color:var(--blue);background:var(--sky)}
    .btn-dark{background:var(--ink);color:#fff}
    .btn-dark:hover{background:#1e3c69;transform:translateY(-2px)}
    .btn:focus,a:focus,button:focus,input:focus{outline:3px solid rgba(22,184,212,.36);outline-offset:3px}
    .tag{display:inline-flex;padding:5px 10px;border-radius:99px;background:#e9f2ff;color:var(--blue);font-size:12px;font-weight:800}
    header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.93);backdrop-filter:blur(15px);border-bottom:1px solid rgba(220,230,243,.86)}
    .topbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:22px;font-weight:900;letter-spacing:-.06em}
    .logo-mark{width:35px;height:35px;border-radius:11px;color:#fff;display:grid;place-items:center;background:linear-gradient(135deg,var(--blue),var(--cyan));box-shadow:0 7px 16px rgba(23,105,232,.28);font-size:17px}
    .nav-wrap{display:flex;align-items:center;gap:20px}
    .nav{display:flex;align-items:center;gap:4px}
    .nav a{padding:9px 11px;border-radius:8px;color:#52627d;font-size:14px;font-weight:700;white-space:nowrap;transition:.2s}
    .nav a:hover,.nav a.active{color:var(--blue);background:var(--sky)}
    .nav-cta{font-size:14px;padding:10px 16px}
    .mobile-toggle{display:none;background:var(--sky);color:var(--blue);border-radius:9px;width:40px;height:40px;font-size:20px}
    .crumb{background:#fff;border-bottom:1px solid var(--line)}
    .crumb .container{min-height:45px;display:flex;align-items:center;gap:9px;color:#77869f;font-size:13px}
    .crumb a:hover{color:var(--blue)}
    .crumb b{font-weight:500;color:#abb6c7}
    .page-banner{background:linear-gradient(90deg,rgba(10,48,108,.95),rgba(18,104,202,.82)),url('/assets/images/backpic/back-2.webp') center/cover;min-height:310px;color:#fff;display:flex;align-items:center}
    .banner-content{max-width:770px;padding:48px 0}
    .page-banner .eyebrow{color:#aad9ff}
    .page-banner .eyebrow:before{background:#aad9ff}
    .page-banner h1{font-size:clamp(36px,5vw,58px);line-height:1.14;letter-spacing:-.06em;margin:13px 0 17px}
    .page-banner p{max-width:690px;color:#deedff;font-size:17px;margin:0}
    .banner-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:23px}
    .banner-meta span{border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.11);padding:5px 11px;border-radius:99px;font-size:13px}
    .release-overview{display:grid;grid-template-columns:1.08fr .92fr;gap:34px;align-items:stretch}
    .release-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:34px;position:relative;overflow:hidden}
    .release-card:after{content:"28";position:absolute;right:20px;bottom:-54px;font-size:170px;font-weight:900;line-height:1;color:rgba(23,105,232,.06)}
    .release-card>*{position:relative}
    .release-card h2{font-size:30px;line-height:1.35;color:var(--ink);margin:14px 0}
    .release-card p{color:var(--muted)}
    .version-number{display:flex;align-items:end;gap:12px;margin:25px 0 22px}
    .version-number strong{font-size:42px;line-height:1;color:var(--blue);letter-spacing:-.06em}
    .version-number span{font-size:13px;color:var(--muted);padding-bottom:4px}
    .mini-list{display:grid;gap:12px}
    .mini-list li{padding:13px 15px 13px 42px;background:#f7faff;border-radius:10px;position:relative;font-size:14px;font-weight:650;color:#405270}
    .mini-list li:before{content:"✓";position:absolute;left:15px;top:13px;color:#fff;background:var(--success);width:18px;height:18px;border-radius:50%;text-align:center;line-height:18px;font-size:11px}
    .release-image{min-height:100%;border-radius:var(--radius);overflow:hidden;position:relative;background:#123d87}
    .release-image img{width:100%;height:100%;min-height:420px;object-fit:cover;opacity:.9}
    .image-note{position:absolute;right:20px;bottom:20px;left:20px;padding:19px;background:rgba(9,32,76,.81);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.18);border-radius:14px;color:#fff}
    .image-note strong{display:block;font-size:17px;margin-bottom:3px}
    .image-note span{font-size:13px;color:#d7e8ff}
    .update-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .update-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:27px;transition:.25s;min-height:255px}
    .update-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#b9d4fa}
    .icon-box{width:48px;height:48px;display:grid;place-items:center;background:var(--sky);border-radius:14px;color:var(--blue);font-size:23px;font-weight:900;margin-bottom:20px}
    .update-card h3{color:var(--ink);font-size:19px;margin:0 0 9px}
    .update-card p{font-size:14px;color:var(--muted);margin:0}
    .notice-board{display:grid;grid-template-columns:.72fr 1.28fr;gap:0;border:1px solid #c9dff9;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
    .notice-intro{padding:38px;background:var(--blue);color:#fff}
    .notice-intro h2{font-size:29px;line-height:1.35;margin:14px 0}
    .notice-intro p{color:#d8eaff;margin:0}
    .notice-intro .tag{background:rgba(255,255,255,.16);color:#fff}
    .notice-list{background:#fff;padding:17px 29px}
    .notice-item{padding:21px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:106px 1fr;gap:20px}
    .notice-item:last-child{border:0}
    .notice-date{font-size:13px;color:var(--blue);font-weight:850}
    .notice-item h3{color:var(--ink);font-size:16px;margin:0 0 4px}
    .notice-item p{font-size:13px;color:var(--muted);line-height:1.7;margin:0}
    .steps-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:55px;align-items:start}
    .steps-intro{position:sticky;top:105px}
    .steps-intro h2{font-size:36px;color:var(--ink);line-height:1.3;margin:12px 0}
    .steps-intro p{color:var(--muted)}
    .step-list{counter-reset:step;display:grid;gap:16px}
    .step-item{counter-increment:step;display:grid;grid-template-columns:58px 1fr;gap:19px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:16px}
    .step-item:before{content:"0" counter(step);color:var(--blue);font-size:20px;font-weight:900;line-height:1.3}
    .step-item h3{color:var(--ink);font-size:18px;margin:0 0 5px}
    .step-item p{font-size:14px;color:var(--muted);margin:0}
    .compatibility{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .compat-card{border-radius:16px;padding:24px;background:#fff;border:1px solid var(--line)}
    .compat-card strong{display:block;color:var(--ink);font-size:17px;margin:13px 0 4px}
    .compat-card span{display:block;color:var(--muted);font-size:13px;line-height:1.65}
    .compat-symbol{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:#e8f8f3;color:var(--success);font-weight:900}
    .attention-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
    .attention-card{border-radius:var(--radius);padding:32px;border:1px solid var(--line);background:#fff}
    .attention-card.safe{background:linear-gradient(135deg,#f1faff,#fff)}
    .attention-card.warn{background:linear-gradient(135deg,#fff8eb,#fff)}
    .attention-card h3{font-size:22px;color:var(--ink);margin:0 0 14px}
    .attention-card li{position:relative;padding:9px 0 9px 25px;border-bottom:1px dashed #dce6f3;font-size:14px;color:#52627d}
    .attention-card li:last-child{border-bottom:0}
    .attention-card li:before{content:"";position:absolute;left:1px;top:19px;width:8px;height:8px;border-radius:50%;background:var(--cyan)}
    .attention-card.warn li:before{background:var(--warning)}
    .faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:48px;align-items:start}
    .faq-layout h2{font-size:36px;line-height:1.3;color:var(--ink);margin:12px 0}
    .faq-layout p{color:var(--muted)}
    .faq-list{display:grid;gap:12px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:13px;overflow:hidden}
    .faq-item summary{cursor:pointer;list-style:none;padding:20px 50px 20px 21px;color:var(--ink);font-size:16px;font-weight:800;position:relative}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"+";position:absolute;right:20px;top:14px;font-size:26px;color:var(--blue);font-weight:400}
    .faq-item[open] summary{background:#f5f9ff}
    .faq-item[open] summary:after{content:"−"}
    .faq-answer{padding:0 21px 20px;color:var(--muted);font-size:14px;line-height:1.85}
    .service-cta{padding:0 0 88px}
    .cta-box{background:linear-gradient(112deg,#0d4db8,#1769e8 60%,#1494d2);color:#fff;border-radius:var(--radius);padding:48px 55px;position:relative;overflow:hidden;display:flex;justify-content:space-between;align-items:center;gap:30px}
    .cta-box:after{content:"";position:absolute;right:-60px;top:-130px;width:310px;height:310px;border:45px solid rgba(255,255,255,.09);border-radius:50%}
    .cta-box>*{position:relative;z-index:1}
    .cta-box h2{font-size:31px;line-height:1.35;margin:0 0 9px}
    .cta-box p{margin:0;color:#d9edff}
    .cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex-shrink:0}
    .cta-box .btn-light{border-color:#fff}
    .footer{background:#10213d;color:#b7c6dc;padding:67px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.35fr .8fr .8fr;gap:50px;padding-bottom:44px}
    .footer .logo{color:#fff}
    .footer-brand p{max-width:390px;font-size:14px;color:#aabbd3;margin:19px 0 0}
    .footer h4{color:#fff;margin:5px 0 15px;font-size:15px}
    .footer-links{display:grid;gap:9px}
    .footer-links a{font-size:14px;transition:.2s}
    .footer-links a:hover{color:#72c8ff;transform:translateX(3px)}
    .footer-bottom{border-top:1px solid rgba(204,224,255,.15);padding-top:19px;display:flex;justify-content:space-between;gap:18px;align-items:center;font-size:12px;color:#96a9c5}
    .footer-bottom a:hover{color:#fff}
    @media(max-width:1024px){
      .nav-wrap{gap:10px}.nav a{padding:8px 7px;font-size:13px}.nav-cta{display:none}
      .release-overview,.steps-wrap,.faq-layout{gap:30px}
      .compatibility{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .section{padding:62px 0}
      .topbar{height:66px}.mobile-toggle{display:grid;place-items:center}
      .nav-wrap{position:relative}.nav{display:none;position:absolute;right:0;top:49px;width:min(310px,calc(100vw - 32px));padding:11px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav.open{display:flex}.nav a{padding:11px 13px}
      .page-banner{min-height:270px}.page-banner p{font-size:15px}
      .release-overview,.notice-board,.steps-wrap,.faq-layout{grid-template-columns:1fr}
      .release-image{min-height:290px}.release-image img{min-height:290px}
      .steps-intro{position:static}
      .update-grid{grid-template-columns:1fr 1fr}
      .attention-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr;gap:35px}.footer-brand{grid-column:1/-1}
      .cta-box{padding:37px;display:block}.cta-actions{margin-top:24px}
    }
    @media(max-width:520px){
      body{font-size:15px}.section{padding:52px 0}
      .crumb .container{font-size:12px;overflow:hidden;white-space:nowrap}
      .page-banner h1{font-size:35px}.banner-content{padding:38px 0}
      .release-card{padding:25px}.release-card h2{font-size:26px}.version-number strong{font-size:34px}
      .update-grid,.compatibility{grid-template-columns:1fr}
      .notice-intro{padding:27px}.notice-list{padding:10px 20px}.notice-item{grid-template-columns:1fr;gap:4px}
      .step-item{grid-template-columns:45px 1fr;padding:20px 17px}
      .faq-layout h2,.steps-intro h2{font-size:29px}
      .cta-box{padding:30px 24px}.cta-box h2{font-size:26px}
      .footer-grid{grid-template-columns:1fr;gap:27px}.footer-brand{grid-column:auto}
      .footer-bottom{align-items:flex-start;flex-direction:column}
    }

/* roulang page: category1 */
:root{
 --blue:#1769e8;--blue-dark:#0d47aa;--sky:#eaf3ff;--cyan:#16b8d4;--ink:#10213d;
 --text:#30415f;--muted:#71809a;--line:#dce6f3;--paper:#fff;--bg:#f6f9fe;
 --success:#08a77a;--warning:#f59c19;--radius:20px;--radius-sm:12px;
 --shadow:0 14px 38px rgba(22,67,137,.10);--shadow-lg:0 24px 60px rgba(19,70,146,.16);
 --container:1180px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--text);background:var(--bg);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75;font-size:16px}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
button,input{font:inherit}
button{border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin-top:0}
.container{width:min(var(--container),calc(100% - 48px));margin:auto}
.section{padding:86px 0;position:relative}
.section-soft{background:var(--paper)}
.section-tint{background:linear-gradient(180deg,#f4f8ff 0%,#fff 100%)}
.section-head{max-width:760px;margin-bottom:38px}
.section-head h2{margin:10px 0 13px;color:var(--ink);font-size:clamp(27px,3vw,40px);line-height:1.3;letter-spacing:-.04em}
.section-head p{color:var(--muted);margin:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.12em}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--cyan)}
.btn{display:inline-flex;justify-content:center;align-items:center;gap:9px;padding:13px 21px;border-radius:11px;font-weight:800;transition:.25s ease}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 18px rgba(23,105,232,.22)}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 15px 24px rgba(23,105,232,.28)}
.btn-light{background:#fff;color:var(--blue);border:1px solid #d7e5fd}
.btn-light:hover{border-color:var(--blue);background:var(--sky)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#1e3c69;transform:translateY(-2px)}
.btn:focus,a:focus,button:focus,input:focus{outline:3px solid rgba(22,184,212,.36);outline-offset:3px}
.tag{display:inline-flex;padding:5px 10px;border-radius:99px;background:#e9f2ff;color:var(--blue);font-size:12px;font-weight:800}
header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.93);backdrop-filter:blur(15px);border-bottom:1px solid rgba(220,230,243,.86)}
.topbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:22px;font-weight:900;letter-spacing:-.06em}
.logo-mark{width:35px;height:35px;border-radius:11px;color:#fff;display:grid;place-items:center;background:linear-gradient(135deg,var(--blue),var(--cyan));box-shadow:0 7px 16px rgba(23,105,232,.28);font-size:17px}
.nav-wrap{display:flex;align-items:center;gap:24px}
.nav{display:flex;align-items:center;gap:4px}
.nav a{padding:9px 11px;border-radius:8px;color:#52627d;font-size:14px;font-weight:700;white-space:nowrap;transition:.2s}
.nav a:hover,.nav a.active{color:var(--blue);background:var(--sky)}
.nav-cta{font-size:14px;padding:10px 16px}
.mobile-toggle{display:none;background:var(--sky);color:var(--blue);border-radius:9px;width:40px;height:40px;font-size:20px}
.crumb{background:#fff;border-bottom:1px solid var(--line)}
.crumb .container{min-height:45px;display:flex;align-items:center;gap:9px;color:#77869f;font-size:13px}
.crumb a:hover{color:var(--blue)}
.crumb i{font-style:normal;color:#a5b1c3}
.page-hero{position:relative;overflow:hidden;background:linear-gradient(95deg,rgba(8,39,93,.96),rgba(17,93,185,.83)),url('/assets/images/backpic/back-2.webp') center/cover;color:#fff}
.page-hero:after{content:"";position:absolute;width:520px;height:520px;border:1px solid rgba(255,255,255,.16);border-radius:50%;right:-140px;top:-220px;box-shadow:0 0 0 48px rgba(255,255,255,.04),0 0 0 108px rgba(255,255,255,.025)}
.page-hero .container{position:relative;z-index:1;padding:74px 0 68px}
.hero-grid{display:grid;grid-template-columns:1.16fr .84fr;gap:52px;align-items:center}
.page-hero .eyebrow{color:#b9e4ff}
.page-hero .eyebrow:before{background:#b9e4ff}
.page-hero h1{font-size:clamp(37px,5vw,62px);line-height:1.14;letter-spacing:-.06em;margin:14px 0 20px}
.page-hero p{max-width:670px;color:#dcecff;font-size:17px;margin-bottom:0}
.hero-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;margin:26px 0}
.hero-points li{font-size:14px;font-weight:700;color:#eaf5ff}
.hero-points li:before{content:"✓";display:inline-grid;place-items:center;width:18px;height:18px;margin-right:8px;border-radius:50%;background:rgba(114,222,199,.22);color:#9bf0db;font-size:11px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-card{padding:26px;background:rgba(255,255,255,.97);border-radius:var(--radius);color:var(--ink);box-shadow:var(--shadow-lg)}
.hero-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:17px;border-bottom:1px solid var(--line)}
.hero-card-top strong{font-size:19px}
.status{display:inline-flex;align-items:center;gap:7px;color:var(--success);font-size:13px;font-weight:800}
.status:before{content:"";width:8px;height:8px;background:var(--success);border-radius:50%;box-shadow:0 0 0 4px rgba(8,167,122,.12)}
.download-lines{padding:17px 0 3px}
.download-line{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px dashed #dce6f3;font-size:14px}
.download-line span{color:var(--muted)}
.download-line b{color:var(--ink)}
.trust-strip{background:#fff;border-bottom:1px solid var(--line)}
.trust-strip .container{display:grid;grid-template-columns:repeat(4,1fr)}
.trust-item{padding:22px 25px;border-right:1px solid var(--line)}
.trust-item:last-child{border-right:0}
.trust-item strong{display:block;color:var(--ink);font-size:15px}
.trust-item span{color:var(--muted);font-size:13px}
.intro-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:58px;align-items:center}
.image-frame{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg);position:relative}
.image-frame img{width:100%;height:390px;object-fit:cover}
.image-frame:after{content:"亿万28";position:absolute;left:20px;bottom:18px;padding:7px 13px;border-radius:99px;color:#fff;background:rgba(11,43,92,.75);font-size:13px;font-weight:800}
.intro-copy h2{color:var(--ink);font-size:clamp(28px,3.3vw,42px);line-height:1.3;letter-spacing:-.04em;margin:12px 0 17px}
.intro-copy p{color:var(--muted)}
.check-list{display:grid;gap:13px;margin-top:24px}
.check-list li{position:relative;padding-left:29px;font-size:14px;font-weight:700;color:#435574}
.check-list li:before{content:"✓";position:absolute;left:0;top:4px;display:grid;place-items:center;width:19px;height:19px;border-radius:50%;background:var(--success);color:#fff;font-size:11px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step-card{position:relative;padding:29px 24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:.25s}
.step-card:hover{transform:translateY(-5px);border-color:#bcd8ff;box-shadow:var(--shadow)}
.step-no{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--sky);color:var(--blue);font-weight:900;font-size:17px}
.step-card h3{color:var(--ink);font-size:18px;margin:21px 0 8px}
.step-card p{color:var(--muted);font-size:14px;line-height:1.7;margin:0}
.support-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:25px}
.support-panel{border-radius:var(--radius);padding:39px;background:linear-gradient(135deg,#e8f3ff,#fff);border:1px solid #d9e8fb}
.support-panel h2{color:var(--ink);font-size:31px;line-height:1.35;margin:12px 0}
.support-panel p{color:#5d6f8d}
.support-list{display:grid;gap:10px;margin:23px 0 25px}
.support-list li{display:flex;align-items:flex-start;gap:11px;color:#425473;font-size:14px;font-weight:700}
.support-list b{display:grid;place-items:center;flex:0 0 22px;width:22px;height:22px;color:#fff;background:var(--blue);border-radius:7px;font-size:12px}
.notice-card{padding:32px;background:var(--ink);color:#fff;border-radius:var(--radius);box-shadow:var(--shadow)}
.notice-card .tag{background:rgba(145,200,255,.14);color:#bde0ff}
.notice-card h3{font-size:25px;line-height:1.35;margin:17px 0 12px}
.notice-card p{color:#c7d8f0;font-size:14px}
.notice-card a{margin-top:15px}
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.device-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}
.device-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#bfdbff}
.device-card img{width:100%;height:170px;object-fit:cover}
.device-content{padding:23px}
.device-content h3{margin:0 0 7px;color:var(--ink);font-size:19px}
.device-content p{margin:0;color:var(--muted);font-size:14px}
.device-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:17px}
.security-band{background:var(--ink);color:#fff}
.security-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:58px;align-items:center}
.security-copy h2{font-size:clamp(28px,3.3vw,41px);line-height:1.3;margin:12px 0 17px}
.security-copy p{color:#b8cce8}
.security-points{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}
.security-point{padding:20px;border:1px solid rgba(174,208,255,.19);border-radius:15px;background:rgba(255,255,255,.06)}
.security-point strong{display:block;font-size:16px;margin-bottom:5px}
.security-point span{display:block;color:#b7cbe7;font-size:13px;line-height:1.65}
.faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:50px}
.faq-copy h2{color:var(--ink);font-size:35px;line-height:1.3;margin:12px 0}
.faq-copy p{color:var(--muted)}
.faq-list{display:grid;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:19px 21px;background:#fff;color:var(--ink);font-weight:800;text-align:left}
.faq-question span:last-child{color:var(--blue);font-size:21px;transition:.25s}
.faq-answer{display:none;padding:0 21px 19px;color:var(--muted);font-size:14px;line-height:1.8}
.faq-item.open{border-color:#bed8fa;box-shadow:0 9px 24px rgba(22,67,137,.07)}
.faq-item.open .faq-answer{display:block}
.faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
.cta-box{position:relative;overflow:hidden;padding:56px 60px;border-radius:var(--radius);background:linear-gradient(110deg,#1769e8,#1394c7);color:#fff;box-shadow:var(--shadow-lg)}
.cta-box:after{content:"28";position:absolute;right:36px;bottom:-80px;color:rgba(255,255,255,.12);font-size:270px;line-height:1;font-weight:900}
.cta-box>*{position:relative;z-index:1}
.cta-box h2{max-width:670px;font-size:clamp(29px,3.4vw,44px);line-height:1.28;margin:10px 0 15px}
.cta-box p{max-width:660px;color:#dcf2ff}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.footer{padding:62px 0 25px;background:#0b1e3a;color:#b8c8df}
.footer-grid{display:grid;grid-template-columns:1.45fr .7fr .7fr;gap:55px;padding-bottom:45px}
.footer .logo{color:#fff}
.footer-brand p{max-width:380px;color:#a9bdd9;font-size:14px;margin:18px 0 0}
.footer h4{margin:0 0 16px;color:#fff;font-size:15px}
.footer-links{display:grid;gap:9px}
.footer-links a{font-size:14px;transition:.2s}
.footer-links a:hover{color:#8cc8ff;transform:translateX(3px)}
.footer-bottom{padding-top:22px;border-top:1px solid rgba(184,211,245,.16);display:flex;align-items:center;justify-content:space-between;gap:18px;color:#8fa5c4;font-size:12px}
.footer-bottom a:hover{color:#fff}
@media(max-width:1100px){
 .nav-wrap{gap:12px}.nav{gap:0}.nav a{padding:8px 7px;font-size:13px}.steps{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:900px){
 .mobile-toggle{display:grid;place-items:center}.nav-wrap{position:absolute;display:none;top:76px;left:0;right:0;padding:14px 24px 20px;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}.nav-wrap.show{display:block}.nav{display:grid;grid-template-columns:repeat(2,1fr);gap:5px}.nav a{padding:11px}.nav-cta{margin-top:12px;width:100%}
 .hero-grid,.intro-grid,.support-grid,.security-grid,.faq-layout{grid-template-columns:1fr;gap:32px}.hero-card{max-width:560px}.trust-strip .container{grid-template-columns:repeat(2,1fr)}.trust-item:nth-child(2){border-right:0}.trust-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.device-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.2fr 1fr;gap:35px}.footer-brand{grid-column:1/-1}
}
@media(max-width:600px){
 body{font-size:15px}.container{width:min(var(--container),calc(100% - 32px))}.section{padding:62px 0}.topbar{height:68px}.logo{font-size:20px}.nav-wrap{top:68px;padding-left:16px;padding-right:16px}.crumb .container{font-size:12px;overflow:hidden;white-space:nowrap}.page-hero .container{padding:59px 0}.page-hero h1{font-size:38px}.page-hero p{font-size:15px}.hero-points{grid-template-columns:1fr}.hero-card{padding:21px}.trust-strip .container{grid-template-columns:1fr}.trust-item,.trust-item:nth-child(2){border-right:0;border-bottom:1px solid var(--line);padding:17px}.trust-item:last-child{border-bottom:0}.image-frame img{height:270px}.steps,.device-grid,.security-points{grid-template-columns:1fr}.support-panel,.notice-card{padding:27px}.cta-box{padding:37px 27px}.cta-box:after{right:-15px;font-size:190px}.footer{padding-top:48px}.footer-grid{grid-template-columns:1fr;gap:30px}.footer-brand{grid-column:auto}.footer-bottom{align-items:flex-start;flex-direction:column}.section-head{margin-bottom:27px}
}

/* roulang page: category4 */
:root{
 --blue:#1769e8;--blue-dark:#0d47aa;--sky:#eaf3ff;--cyan:#16b8d4;--ink:#10213d;
 --text:#30415f;--muted:#71809a;--line:#dce6f3;--paper:#fff;--bg:#f6f9fe;
 --success:#08a77a;--warning:#f59c19;--radius:20px;--radius-sm:12px;
 --shadow:0 14px 38px rgba(22,67,137,.10);--shadow-lg:0 24px 60px rgba(19,70,146,.16);
 --container:1180px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--text);background:var(--bg);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75;font-size:16px}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
button,input{font:inherit}
button{border:0;cursor:pointer}
.container{width:min(var(--container),calc(100% - 48px));margin:auto}
.section{padding:84px 0;position:relative}
.section-soft{background:var(--paper)}
.section-head{max-width:760px;margin-bottom:38px}
.section-head h2{margin:10px 0 13px;color:var(--ink);font-size:clamp(28px,4vw,43px);line-height:1.25;letter-spacing:-.045em}
.section-head p{margin:0;color:var(--muted);max-width:720px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.12em}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--cyan)}
.btn{display:inline-flex;justify-content:center;align-items:center;gap:9px;padding:13px 21px;border-radius:11px;font-weight:800;transition:.25s ease}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 18px rgba(23,105,232,.22)}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 15px 24px rgba(23,105,232,.28)}
.btn-light{background:#fff;color:var(--blue);border:1px solid #d7e5fd}
.btn-light:hover{border-color:var(--blue);background:var(--sky)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#1e3c69;transform:translateY(-2px)}
.btn:focus,a:focus,button:focus,input:focus{outline:3px solid rgba(22,184,212,.36);outline-offset:3px}
.tag{display:inline-flex;padding:5px 10px;border-radius:99px;background:#e9f2ff;color:var(--blue);font-size:12px;font-weight:800}
header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.93);backdrop-filter:blur(15px);border-bottom:1px solid rgba(220,230,243,.86)}
.topbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:22px;font-weight:900;letter-spacing:-.06em}
.logo-mark{width:35px;height:35px;border-radius:11px;color:#fff;display:grid;place-items:center;background:linear-gradient(135deg,var(--blue),var(--cyan));box-shadow:0 7px 16px rgba(23,105,232,.28);font-size:17px}
.nav-wrap{display:flex;align-items:center;gap:24px}
.nav{display:flex;align-items:center;gap:4px}
.nav a{padding:9px 11px;border-radius:8px;color:#52627d;font-size:14px;font-weight:700;white-space:nowrap;transition:.2s}
.nav a:hover,.nav a.active{color:var(--blue);background:var(--sky)}
.nav-cta{font-size:14px;padding:10px 16px}
.mobile-toggle{display:none;background:var(--sky);color:var(--blue);border-radius:9px;width:40px;height:40px;font-size:20px}
.crumb{background:#fff;border-bottom:1px solid var(--line)}
.crumb .container{min-height:48px;display:flex;align-items:center;gap:9px;color:#77869f;font-size:13px}
.crumb a:hover{color:var(--blue)}
.page-hero{padding:86px 0 92px;color:#fff;background:linear-gradient(90deg,rgba(8,39,93,.94),rgba(12,64,145,.78),rgba(12,100,173,.48)),url('/assets/images/backpic/back-2.webp') center/cover;position:relative;overflow:hidden}
.page-hero:after{content:"28";position:absolute;right:8%;bottom:-62px;font-size:260px;line-height:1;font-weight:900;color:rgba(255,255,255,.08)}
.page-hero .container{position:relative;z-index:1}
.page-hero h1{font-size:clamp(38px,5.5vw,65px);line-height:1.12;letter-spacing:-.06em;max-width:800px;margin:15px 0 19px}
.page-hero p{max-width:720px;color:#dcecff;font-size:17px;line-height:1.9;margin:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:29px}
.hero .btn-light,.page-hero .btn-light{background:rgba(255,255,255,.95)}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:stretch}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}
.panel h3{color:var(--ink);font-size:24px;margin:0 0 12px}
.panel p{color:var(--muted);margin:0}
.update-card{display:flex;gap:20px;align-items:flex-start;background:linear-gradient(135deg,#eff7ff,#fff);border:1px solid #cfe2fb;border-radius:var(--radius);padding:25px}
.version{min-width:74px;height:74px;border-radius:17px;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:14px;font-weight:900;box-shadow:0 10px 20px rgba(23,105,232,.22)}
.update-card h3{margin:0 0 4px;color:var(--ink);font-size:20px}
.update-card p{font-size:14px;color:var(--muted);margin:0}
.update-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature-card{padding:27px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:.25s}
.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#bfd8fb}
.icon{width:43px;height:43px;border-radius:13px;background:var(--sky);color:var(--blue);display:grid;place-items:center;font-weight:900;font-size:19px;margin-bottom:18px}
.feature-card h3{color:var(--ink);font-size:18px;margin:0 0 7px}
.feature-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.7}
.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:55px;align-items:center}
.split img{width:100%;height:350px;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.check-list{padding:0;margin:22px 0 0;list-style:none;display:grid;gap:12px}
.check-list li{padding-left:29px;position:relative;font-weight:600}
.check-list li:before{content:"✓";position:absolute;left:0;top:4px;width:19px;height:19px;line-height:19px;text-align:center;border-radius:50%;background:var(--success);color:#fff;font-size:11px}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.step{position:relative;padding:25px 20px;background:#fff;border:1px solid var(--line);border-radius:16px}
.step:after{content:"→";position:absolute;right:-18px;top:38px;color:var(--cyan);font-size:22px;font-weight:900}
.step:last-child:after{display:none}
.step b{display:block;color:var(--blue);font-size:13px;margin-bottom:13px}
.step h3{font-size:17px;color:var(--ink);margin:0 0 7px}
.step p{font-size:13px;color:var(--muted);margin:0}
.dark-section{background:#102e59;color:#fff}
.dark-section .section-head h2{color:#fff}
.dark-section .section-head p{color:#b7cce8}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.compare article{padding:28px;border-radius:16px;border:1px solid rgba(255,255,255,.15);background:rgba(255,255,255,.07)}
.compare h3{margin:0 0 8px;font-size:19px}
.compare p{color:#c5d7ee;font-size:14px;margin:0}
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;background:#fff;color:var(--ink);padding:19px 22px;font-weight:800}
.faq-question span{color:var(--blue);font-size:22px;transition:.2s}
.faq-answer{display:none;padding:0 22px 19px;color:var(--muted);font-size:14px}
.faq-item.open .faq-answer{display:block}
.faq-item.open .faq-question span{transform:rotate(45deg)}
.cta{background:linear-gradient(115deg,#1769e8,#0d47aa);border-radius:var(--radius);padding:45px 52px;color:#fff;display:flex;justify-content:space-between;align-items:center;gap:25px;box-shadow:var(--shadow-lg)}
.cta h2{font-size:30px;line-height:1.25;margin:0 0 9px}
.cta p{color:#d9e9ff;margin:0;max-width:650px}
.footer{background:#0b1d38;color:#b9cbe3;padding:62px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:60px}
.footer .logo{color:#fff}
.footer-brand p{max-width:360px;color:#8fa7c5;font-size:14px}
.footer h4{color:#fff;margin:5px 0 15px;font-size:15px}
.footer-links{display:grid;gap:9px;font-size:14px}
.footer-links a:hover,.footer-bottom a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.13);margin-top:42px;padding-top:20px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:#8fa7c5}
@media(max-width:1024px){.nav-wrap{gap:8px}.nav a{padding:8px 7px;font-size:13px}.feature-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){
 .container{width:min(var(--container),calc(100% - 34px))}
 .section{padding:64px 0}.topbar{height:68px}.mobile-toggle{display:block}
 .nav-wrap{position:relative}.nav{display:none;position:absolute;right:0;top:52px;width:250px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-lg);flex-direction:column;align-items:stretch}
 .nav.show{display:flex}.nav a{padding:12px 14px}.nav-cta{display:none}
 .page-hero{padding:65px 0 72px}.page-hero h1{font-size:43px}
 .intro-grid,.split,.compare{grid-template-columns:1fr;gap:18px}.feature-grid{grid-template-columns:1fr}
 .timeline{grid-template-columns:1fr 1fr}.step:after{display:none}.cta{padding:32px 25px;display:block}.cta .btn{margin-top:22px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:8px}
}
@media(max-width:520px){
 .hero-actions .btn{width:100%}.page-hero h1{font-size:37px}.page-hero p{font-size:15px}
 .panel{padding:25px}.update-card{display:block}.version{margin-bottom:16px}.timeline{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}
}

/* roulang page: category5 */
:root{
--blue:#1769e8;--blue-dark:#0d47aa;--sky:#eaf3ff;--cyan:#16b8d4;--ink:#10213d;
--text:#30415f;--muted:#71809a;--line:#dce6f3;--paper:#fff;--bg:#f6f9fe;
--success:#08a77a;--warning:#f59c19;--radius:20px;--radius-sm:12px;
--shadow:0 14px 38px rgba(22,67,137,.10);--shadow-lg:0 24px 60px rgba(19,70,146,.16);
--container:1180px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--text);background:var(--bg);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75;font-size:16px}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
button,input{font:inherit}
button{border:0;cursor:pointer}
.container{width:min(var(--container),calc(100% - 48px));margin:auto}
.section{padding:88px 0;position:relative}
.section-soft{background:var(--paper)}
.section-head{max-width:760px;margin-bottom:38px}
.section-head h2{font-size:clamp(27px,3vw,42px);line-height:1.25;letter-spacing:-.045em;color:var(--ink);margin:12px 0 14px}
.section-head p{color:var(--muted);max-width:720px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.12em}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--cyan)}
.btn{display:inline-flex;justify-content:center;align-items:center;gap:9px;padding:13px 21px;border-radius:11px;font-weight:800;transition:.25s ease}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 18px rgba(23,105,232,.22)}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 15px 24px rgba(23,105,232,.28)}
.btn-light{background:#fff;color:var(--blue);border:1px solid #d7e5fd}
.btn-light:hover{border-color:var(--blue);background:var(--sky)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#1e3c69;transform:translateY(-2px)}
.btn:focus,a:focus,button:focus,input:focus{outline:3px solid rgba(22,184,212,.36);outline-offset:3px}
.tag{display:inline-flex;padding:5px 10px;border-radius:99px;background:#e9f2ff;color:var(--blue);font-size:12px;font-weight:800}
header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.93);backdrop-filter:blur(15px);border-bottom:1px solid rgba(220,230,243,.86)}
.topbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:22px;font-weight:900;letter-spacing:-.06em}
.logo-mark{width:35px;height:35px;border-radius:11px;color:#fff;display:grid;place-items:center;background:linear-gradient(135deg,var(--blue),var(--cyan));box-shadow:0 7px 16px rgba(23,105,232,.28);font-size:17px}
.nav-wrap{display:flex;align-items:center;gap:24px}
.nav{display:flex;align-items:center;gap:4px}
.nav a{padding:9px 11px;border-radius:8px;color:#52627d;font-size:14px;font-weight:700;white-space:nowrap;transition:.2s}
.nav a:hover,.nav a.active{color:var(--blue);background:var(--sky)}
.mobile-toggle{display:none;background:var(--sky);color:var(--blue);border-radius:9px;width:40px;height:40px;font-size:20px}
.crumb{background:#fff;border-bottom:1px solid var(--line)}
.crumb .container{min-height:48px;display:flex;align-items:center;gap:9px;color:#77869f;font-size:13px}
.crumb a{color:var(--blue)}
.hero{min-height:560px;color:#fff;background:linear-gradient(90deg,rgba(8,39,93,.95),rgba(12,64,145,.78) 52%,rgba(12,100,173,.46)),url('/assets/images/backpic/back-2.webp') center/cover;display:flex;align-items:center;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;width:560px;height:560px;border:1px solid rgba(255,255,255,.17);border-radius:50%;right:-150px;top:-210px;box-shadow:0 0 0 50px rgba(255,255,255,.04),0 0 0 110px rgba(255,255,255,.025)}
.hero-inner{position:relative;z-index:1;padding:76px 0;display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.hero .eyebrow{color:#a8dcff}.hero .eyebrow:before{background:#a8dcff}
.hero h1{font-size:clamp(38px,5vw,64px);line-height:1.12;letter-spacing:-.06em;max-width:700px;margin:14px 0 20px}
.hero p{max-width:650px;font-size:17px;color:#dcecff;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero .btn-light{background:rgba(255,255,255,.95)}
.notice-panel{background:rgba(255,255,255,.96);color:var(--ink);padding:26px;border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.notice-panel img{height:170px;width:100%;object-fit:cover;border-radius:14px}
.notice-panel h3{font-size:21px;margin:18px 0 7px}
.notice-panel p{font-size:13px;line-height:1.7;color:var(--muted);margin:0}
.notice-line{display:flex;justify-content:space-between;gap:15px;border-top:1px solid var(--line);padding-top:13px;margin-top:18px;font-size:13px}
.notice-line b{color:var(--success)}
.intro-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:58px;align-items:start}
.intro-number{font-size:88px;line-height:1;color:var(--blue);font-weight:900;letter-spacing:-.1em}
.intro-copy{font-size:18px;color:#536782}
.intro-copy p{margin-top:0}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:25px}
.stat{padding:19px;background:#fff;border:1px solid var(--line);border-radius:14px}
.stat strong{display:block;color:var(--ink);font-size:26px;line-height:1.2}.stat span{color:var(--muted);font-size:13px}
.feature-layout{display:grid;grid-template-columns:1fr 1fr;gap:25px;align-items:stretch}
.feature-image{min-height:390px;border-radius:var(--radius);background:url('/assets/images/coverpic/cover-5.webp') center/cover;position:relative;overflow:hidden}
.feature-image:after{content:"活动信息一目了然";position:absolute;left:25px;bottom:22px;color:#fff;font-size:24px;font-weight:900;text-shadow:0 2px 14px #092b63}
.info-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px}
.info-box h3{color:var(--ink);font-size:25px;margin:0 0 15px}.info-box p{color:var(--muted)}
.check-list{list-style:none;padding:0;margin:25px 0 0;display:grid;gap:13px}
.check-list li{padding-left:30px;position:relative;font-weight:600}
.check-list li:before{content:"✓";position:absolute;left:0;top:4px;background:var(--success);color:#fff;width:19px;height:19px;border-radius:50%;line-height:19px;text-align:center;font-size:11px}
.scenario-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.scenario{padding:25px;background:#fff;border:1px solid var(--line);border-radius:16px;transition:.25s}
.scenario:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bfd8fb}
.scenario h3{margin:12px 0 7px;color:var(--ink);font-size:18px}.scenario p{margin:0;color:var(--muted);font-size:14px}
.icon{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:var(--sky);color:var(--blue);font-weight:900;font-size:19px}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.step{padding:28px 24px;border-right:1px solid var(--line);position:relative}.step:last-child{border:0}
.step-no{color:var(--cyan);font-size:13px;font-weight:900;letter-spacing:.1em}.step h3{color:var(--ink);font-size:18px;margin:13px 0 7px}.step p{color:var(--muted);font-size:13px;margin:0}
.dark-section{background:var(--ink);color:#fff}.dark-section .section-head h2{color:#fff}.dark-section .section-head p{color:#b9cce7}
.trust-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:60px;align-items:center}
.quote{font-size:25px;line-height:1.55;color:#eaf3ff;margin:0}
.quote-mark{color:var(--cyan);font-size:55px;line-height:.5}
.trust-list{display:grid;gap:15px}.trust-item{display:flex;gap:15px;align-items:flex-start;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.13)}.trust-item strong{display:block;color:#fff}.trust-item span{font-size:13px;color:#aec3e2}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 23px}.faq-item summary{cursor:pointer;color:var(--ink);font-weight:800}.faq-item p{color:var(--muted);font-size:14px;margin:13px 0 0}
.cta{background:linear-gradient(110deg,#e5f2ff,#fff);border:1px solid #d5e7fc;border-radius:var(--radius);padding:45px;display:flex;align-items:center;justify-content:space-between;gap:25px}.cta h2{color:var(--ink);font-size:30px;margin:0 0 8px}.cta p{color:var(--muted);margin:0}
.footer{background:#0b1c35;color:#a9bdd8;padding:54px 0 20px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:60px}.footer .logo{color:#fff}.footer-brand p{max-width:360px;font-size:13px;line-height:1.8}.footer h4{color:#fff;margin:5px 0 15px}.footer-links{display:grid;gap:9px;font-size:13px}.footer-links a:hover,.footer-bottom a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:42px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;font-size:12px}.footer-bottom a{color:#c7dcf4}
@media(max-width:1024px){.nav-wrap{gap:8px}.nav a{padding:8px 7px;font-size:13px}.hero-inner{gap:30px}.container{width:min(var(--container),calc(100% - 36px))}}
@media(max-width:768px){.topbar{height:68px}.mobile-toggle{display:block}.nav-wrap{position:relative}.nav{display:none;position:absolute;right:0;top:52px;width:235px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav.open{display:flex}.nav a{padding:11px 13px}.hero-inner,.intro-grid,.feature-layout,.trust-grid{grid-template-columns:1fr}.hero{min-height:auto}.hero-inner{padding:70px 0}.notice-panel{max-width:520px}.timeline{grid-template-columns:1fr 1fr}.step:nth-child(2){border-right:0}.step:nth-child(-n+2){border-bottom:1px solid var(--line)}.cta{display:block;padding:32px}.cta .btn{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr;gap:35px}.footer-brand{grid-column:1/-1}}
@media(max-width:520px){.container{width:calc(100% - 30px)}.section{padding:62px 0}.hero h1{font-size:39px}.hero p{font-size:15px}.hero-actions,.hero-actions .btn{width:100%}.stat-row,.scenario-grid,.faq-grid{grid-template-columns:1fr}.intro-number{font-size:70px}.timeline{grid-template-columns:1fr}.step{border-right:0!important;border-bottom:1px solid var(--line)!important}.step:last-child{border-bottom:0!important}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block;line-height:2}.footer-bottom span{display:block;margin-bottom:8px}}

/* roulang page: category6 */
:root{
      --blue:#1769e8;--blue-dark:#0d47aa;--sky:#eaf3ff;--cyan:#16b8d4;--ink:#10213d;
      --text:#30415f;--muted:#71809a;--line:#dce6f3;--paper:#fff;--bg:#f6f9fe;
      --success:#08a77a;--warning:#f59c19;--radius:20px;--radius-sm:12px;
      --shadow:0 14px 38px rgba(22,67,137,.10);--shadow-lg:0 24px 60px rgba(19,70,146,.16);
      --container:1180px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--text);background:var(--bg);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75;font-size:16px}
    a{text-decoration:none;color:inherit}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    h1,h2,h3,h4,p{margin-top:0}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .section{padding:88px 0;position:relative}
    .section-soft{background:var(--paper)}
    .section-head{max-width:760px;margin-bottom:38px}
    .section-head h2{color:var(--ink);font-size:clamp(27px,3vw,42px);line-height:1.25;letter-spacing:-.04em;margin:12px 0 15px}
    .section-head p{color:var(--muted);max-width:720px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--cyan)}
    .btn{display:inline-flex;justify-content:center;align-items:center;gap:9px;padding:13px 21px;border-radius:11px;font-weight:800;transition:.25s ease}
    .btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 18px rgba(23,105,232,.22)}
    .btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 15px 24px rgba(23,105,232,.28)}
    .btn-light{background:#fff;color:var(--blue);border:1px solid #d7e5fd}
    .btn-light:hover{border-color:var(--blue);background:var(--sky)}
    .btn-dark{background:var(--ink);color:#fff}
    .btn-dark:hover{background:#1e3c69;transform:translateY(-2px)}
    .btn:focus,a:focus,button:focus,input:focus{outline:3px solid rgba(22,184,212,.36);outline-offset:3px}
    .tag{display:inline-flex;padding:5px 10px;border-radius:99px;background:#e9f2ff;color:var(--blue);font-size:12px;font-weight:800}
    header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.93);backdrop-filter:blur(15px);border-bottom:1px solid rgba(220,230,243,.86)}
    .topbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:22px;font-weight:900;letter-spacing:-.06em}
    .logo-mark{width:35px;height:35px;border-radius:11px;color:#fff;display:grid;place-items:center;background:linear-gradient(135deg,var(--blue),var(--cyan));box-shadow:0 7px 16px rgba(23,105,232,.28);font-size:17px}
    .nav-wrap{display:flex;align-items:center;gap:24px}
    .nav{display:flex;align-items:center;gap:4px}
    .nav a{padding:9px 11px;border-radius:8px;color:#52627d;font-size:14px;font-weight:700;white-space:nowrap;transition:.2s}
    .nav a:hover,.nav a.active{color:var(--blue);background:var(--sky)}
    .mobile-toggle{display:none;background:var(--sky);color:var(--blue);border-radius:9px;width:40px;height:40px;font-size:20px}
    .crumb{background:#fff;border-bottom:1px solid var(--line)}
    .crumb .container{min-height:48px;display:flex;align-items:center;gap:9px;color:#77869f;font-size:13px}
    .crumb a:hover{color:var(--blue)}
    .hero{min-height:520px;color:#fff;background:linear-gradient(90deg,rgba(8,39,93,.95),rgba(12,64,145,.78),rgba(12,100,173,.48)),url('/assets/images/backpic/back-2.webp') center/cover;display:flex;align-items:center;position:relative;overflow:hidden}
    .hero:after{content:"28";position:absolute;right:5%;bottom:-85px;color:rgba(255,255,255,.09);font-size:300px;font-weight:900;line-height:1}
    .hero-inner{position:relative;z-index:1;padding:72px 0;display:grid;grid-template-columns:1.12fr .88fr;gap:60px;align-items:center}
    .hero .eyebrow{color:#a8dcff}.hero .eyebrow:before{background:#a8dcff}
    .hero h1{font-size:clamp(38px,5vw,64px);line-height:1.14;letter-spacing:-.06em;margin:15px 0 20px}
    .hero p{max-width:670px;color:#dcecff;font-size:17px;line-height:1.9}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
    .hero-panel{background:rgba(255,255,255,.96);color:var(--ink);border-radius:var(--radius);padding:27px;box-shadow:var(--shadow-lg)}
    .hero-panel img{height:155px;width:100%;object-fit:cover;border-radius:14px;margin-bottom:20px}
    .hero-panel h3{font-size:21px;margin:0 0 8px}
    .hero-panel p{font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:18px}
    .panel-line{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:13px;font-size:13px;color:var(--muted)}
    .panel-line b{color:var(--success)}
    .feature-strip{margin-top:-30px;position:relative;z-index:2}
    .feature-strip-inner{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
    .strip-item{padding:22px 24px;border-right:1px solid var(--line)}
    .strip-item:last-child{border:0}.strip-item strong{display:block;color:var(--ink);font-size:15px}.strip-item span{font-size:13px;color:var(--muted)}
    .split{display:grid;grid-template-columns:.9fr 1.1fr;gap:52px;align-items:center}
    .image-frame{padding:12px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow)}
    .image-frame img{width:100%;height:365px;object-fit:cover;border-radius:14px}
    .copy h2{color:var(--ink);font-size:36px;line-height:1.3;letter-spacing:-.04em;margin:12px 0 17px}
    .copy p{color:var(--muted);line-height:1.9}
    .check-list{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:13px}
    .check-list li{padding-left:29px;position:relative;font-weight:600}
    .check-list li:before{content:"✓";position:absolute;left:0;top:4px;width:18px;height:18px;background:var(--success);color:#fff;border-radius:50%;text-align:center;line-height:18px;font-size:11px}
    .scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .scenario-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:27px;transition:.25s}
    .scenario-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#bcd7fb}
    .scenario-card .num{color:var(--cyan);font-weight:900;font-size:30px;line-height:1}
    .scenario-card h3{color:var(--ink);font-size:19px;margin:18px 0 8px}.scenario-card p{font-size:14px;color:var(--muted);line-height:1.75;margin:0}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
    .step{padding:28px 25px;position:relative;border-right:1px solid var(--line)}.step:last-child{border:0}
    .step b{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--blue);color:#fff;margin-bottom:17px}
    .step h3{font-size:17px;color:var(--ink);margin:0 0 8px}.step p{font-size:13px;color:var(--muted);margin:0}
    .dark-section{background:#102d5b;color:#fff}.dark-section .section-head h2{color:#fff}.dark-section .section-head p{color:#b9d0ef}
    .proof-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
    .proof-card{padding:30px;border:1px solid rgba(206,226,255,.18);background:rgba(255,255,255,.07);border-radius:var(--radius)}
    .proof-card h3{font-size:21px;margin:0 0 12px}.proof-card p{color:#c6daf4;line-height:1.85;font-size:14px}
    .metric-row{display:flex;gap:30px;margin-top:24px}.metric strong{display:block;font-size:31px;color:#fff}.metric span{font-size:13px;color:#a9c7eb}
    .faq-list{max-width:900px;display:grid;gap:12px}
    details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 21px;transition:.2s}
    details[open]{box-shadow:var(--shadow);border-color:#bcd7fb}summary{cursor:pointer;list-style:none;padding:20px 28px 20px 0;color:var(--ink);font-weight:800;position:relative}summary::-webkit-details-marker{display:none}summary:after{content:"＋";position:absolute;right:0;color:var(--blue);font-size:22px;top:15px}details[open] summary:after{content:"－"}details p{color:var(--muted);font-size:14px;padding:0 0 18px;margin:0}
    .cta{background:linear-gradient(135deg,#e8f3ff,#fff);border:1px solid #d7e8fc;border-radius:var(--radius);padding:47px 52px;display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta h2{color:var(--ink);font-size:32px;line-height:1.3;margin:0 0 10px}.cta p{color:var(--muted);margin:0;max-width:650px}
    .footer{background:#0d1d38;color:#c3d1e5;padding:62px 0 22px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:60px;padding-bottom:45px}.footer .logo{color:#fff}.footer-brand p{color:#9eafc8;max-width:360px;font-size:14px}.footer h4{color:#fff;font-size:15px;margin:4px 0 15px}.footer-links{display:grid;gap:9px;font-size:14px}.footer-links a:hover,.footer-bottom a:hover{color:#70d9ef}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:#8fa2be}
    @media(max-width:1024px){.nav{gap:0}.nav a{padding:8px 7px;font-size:13px}.hero-inner{gap:30px}.scenario-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.container{width:min(var(--container),calc(100% - 34px))}.topbar{height:68px}.mobile-toggle{display:block}.nav-wrap{position:relative}.nav{display:none;position:absolute;right:0;top:52px;width:270px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-lg);flex-direction:column;align-items:stretch}.nav.open{display:flex}.nav a{padding:11px 13px}.hero-inner,.split,.proof-grid{grid-template-columns:1fr}.hero{min-height:auto}.hero-panel{max-width:520px}.feature-strip-inner{grid-template-columns:repeat(2,1fr)}.strip-item:nth-child(2){border-right:0}.strip-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.timeline{grid-template-columns:repeat(2,1fr)}.step:nth-child(2){border-right:0}.step:nth-child(-n+2){border-bottom:1px solid var(--line)}.cta{display:block;padding:34px 28px}.cta .btn{margin-top:24px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:9px}}
    @media(max-width:520px){.section{padding:62px 0}.hero h1{font-size:39px}.hero p{font-size:15px}.hero-actions .btn{width:100%}.feature-strip{margin-top:0;padding-top:14px}.feature-strip-inner,.scenario-grid,.timeline{grid-template-columns:1fr}.strip-item,.step{border-right:0!important;border-bottom:1px solid var(--line)}.strip-item:last-child,.step:last-child{border-bottom:0}.image-frame img{height:260px}.copy h2,.cta h2{font-size:28px}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}}

/* roulang page: category7 */
:root{
      --blue:#1769e8;--blue-dark:#0d47aa;--sky:#eaf3ff;--cyan:#16b8d4;--ink:#10213d;
      --text:#30415f;--muted:#71809a;--line:#dce6f3;--paper:#fff;--bg:#f6f9fe;
      --success:#08a77a;--warning:#f59c19;--radius:20px;--radius-sm:12px;
      --shadow:0 14px 38px rgba(22,67,137,.10);--shadow-lg:0 24px 60px rgba(19,70,146,.16);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--text);background:var(--bg);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75;font-size:16px}
    a{text-decoration:none;color:inherit}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    h1,h2,h3,h4,p{margin-top:0}
    h2,h3,h4{color:var(--ink);line-height:1.35}
    ul{margin:0;padding:0;list-style:none}
    .container{width:min(var(--container),calc(100% - 48px));margin:auto}
    .section{padding:82px 0;position:relative}
    .section-soft{background:var(--paper)}
    .section-head{max-width:760px;margin-bottom:38px}
    .section-head h2{font-size:clamp(28px,3.3vw,42px);letter-spacing:-.04em;margin:10px 0 12px}
    .section-head p{color:var(--muted);max-width:720px;margin-bottom:0}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--cyan)}
    .btn{display:inline-flex;justify-content:center;align-items:center;gap:9px;padding:13px 21px;border-radius:11px;font-weight:800;transition:.25s ease}
    .btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 18px rgba(23,105,232,.22)}
    .btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 15px 24px rgba(23,105,232,.28)}
    .btn-light{background:#fff;color:var(--blue);border:1px solid #d7e5fd}
    .btn-light:hover{border-color:var(--blue);background:var(--sky)}
    .btn-dark{background:var(--ink);color:#fff}
    .btn-dark:hover{background:#1e3c69;transform:translateY(-2px)}
    .btn:focus,a:focus,button:focus,input:focus{outline:3px solid rgba(22,184,212,.36);outline-offset:3px}
    .tag{display:inline-flex;padding:5px 10px;border-radius:99px;background:#e9f2ff;color:var(--blue);font-size:12px;font-weight:800}
    header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.93);backdrop-filter:blur(15px);border-bottom:1px solid rgba(220,230,243,.86)}
    .topbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:22px;font-weight:900;letter-spacing:-.06em}
    .logo-mark{width:35px;height:35px;border-radius:11px;color:#fff;display:grid;place-items:center;background:linear-gradient(135deg,var(--blue),var(--cyan));box-shadow:0 7px 16px rgba(23,105,232,.28);font-size:17px}
    .nav-wrap{display:flex;align-items:center;gap:20px}
    .nav{display:flex;align-items:center;gap:4px}
    .nav a{padding:9px 11px;border-radius:8px;color:#52627d;font-size:14px;font-weight:700;white-space:nowrap;transition:.2s}
    .nav a:hover,.nav a.active{color:var(--blue);background:var(--sky)}
    .nav-cta{font-size:14px;padding:10px 16px}
    .mobile-toggle{display:none;background:var(--sky);color:var(--blue);border-radius:9px;width:40px;height:40px;font-size:20px}
    .crumb{background:#fff;border-bottom:1px solid var(--line)}
    .crumb .container{min-height:45px;display:flex;align-items:center;gap:9px;color:#77869f;font-size:13px}
    .crumb a:hover{color:var(--blue)}
    .crumb strong{color:var(--blue)}
    .inner-hero{padding:76px 0 70px;background:linear-gradient(100deg,rgba(10,47,109,.94),rgba(23,105,232,.79)),url('/assets/images/backpic/back-2.webp') center/cover;color:#fff;overflow:hidden}
    .inner-hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:46px;align-items:center}
    .inner-hero .eyebrow{color:#a8dcff}.inner-hero .eyebrow:before{background:#a8dcff}
    .inner-hero h1{font-size:clamp(38px,5vw,60px);line-height:1.14;letter-spacing:-.06em;margin:13px 0 20px}
    .inner-hero p{color:#d9ebff;font-size:17px;max-width:690px;margin-bottom:28px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .guide-panel{background:rgba(255,255,255,.96);color:var(--ink);border-radius:var(--radius);padding:25px;box-shadow:var(--shadow-lg)}
    .guide-panel h3{font-size:19px;margin:12px 0 12px}
    .progress-label{display:flex;justify-content:space-between;font-size:13px;font-weight:800;color:var(--muted)}
    .progress{height:10px;border-radius:30px;background:#e8eef8;overflow:hidden;margin:9px 0 17px}
    .progress i{display:block;width:72%;height:100%;background:linear-gradient(90deg,var(--cyan),var(--blue));border-radius:inherit}
    .panel-list{display:grid;gap:9px}
    .panel-list li{padding:10px 0;border-top:1px solid var(--line);font-size:14px;display:flex;justify-content:space-between;gap:10px}
    .panel-list b{color:var(--success)}
    .intro-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:52px;align-items:center}
    .visual-card{position:relative}
    .visual-card img{width:100%;height:405px;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow-lg)}
    .float-note{position:absolute;right:-18px;bottom:28px;width:220px;padding:18px;background:#fff;border-radius:14px;box-shadow:var(--shadow)}
    .float-note strong{display:block;color:var(--blue);font-size:22px}
    .rich-copy p{color:#576985;margin-bottom:18px}
    .check-list{display:grid;gap:12px;margin-top:23px}
    .check-list li{padding-left:29px;position:relative;font-weight:700;font-size:14px;color:#40516d}
    .check-list li:before{content:"✓";position:absolute;left:0;top:4px;width:18px;height:18px;text-align:center;line-height:18px;border-radius:50%;font-size:11px;background:var(--success);color:#fff}
    .steps{display:grid;grid-template-columns:280px 1fr;gap:38px;align-items:start}
    .step-side{padding:28px;background:var(--ink);border-radius:var(--radius);color:#d4e4fa}
    .step-side h3{color:#fff;font-size:25px;margin:12px 0}
    .step-side p{font-size:14px;margin-bottom:0}
    .step-list{display:grid;gap:15px}
    .step-item{display:grid;grid-template-columns:58px 1fr;gap:20px;padding:21px 24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);transition:.25s}
    .step-item:hover{border-color:#b8d5ff;box-shadow:var(--shadow);transform:translateX(4px)}
    .step-num{width:43px;height:43px;border-radius:13px;background:var(--sky);color:var(--blue);display:grid;place-items:center;font-size:17px;font-weight:900}
    .step-item h3{font-size:18px;margin:1px 0 5px}.step-item p{font-size:14px;color:var(--muted);margin-bottom:0}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .service-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px;transition:.25s;min-height:238px}
    .service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#bed8fa}
    .icon{width:45px;height:45px;border-radius:14px;display:grid;place-items:center;background:var(--sky);color:var(--blue);font-size:21px;font-weight:900}
    .service-card h3{font-size:18px;margin:19px 0 8px}.service-card p{font-size:14px;color:var(--muted);margin:0}
    .notice-wrap{display:grid;grid-template-columns:1fr .92fr;gap:25px}
    .notice-main{background:linear-gradient(135deg,#e6f2ff,#fff);border:1px solid #d6e7fb;border-radius:var(--radius);padding:38px}
    .notice-main h2{font-size:30px;margin:12px 0}.notice-main p{color:#5d6f8c}
    .notice-list{display:grid;gap:12px;margin-top:24px}
    .notice-list li{background:rgba(255,255,255,.8);padding:14px 16px;border-radius:11px;font-size:14px;font-weight:700}
    .notice-list span{color:var(--blue);margin-right:8px}
    .image-note{border-radius:var(--radius);overflow:hidden;position:relative;min-height:360px}
    .image-note img{width:100%;height:100%;object-fit:cover}
    .image-note:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(10,35,80,.78),rgba(10,35,80,.05))}
    .image-note div{position:absolute;z-index:1;bottom:26px;left:27px;right:27px;color:#fff}
    .image-note h3{color:#fff;font-size:24px;margin-bottom:8px}.image-note p{font-size:14px;color:#dceaff;margin:0}
    .security-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:30px;align-items:center}
    .security-copy{padding:35px;background:var(--ink);border-radius:var(--radius);color:#cfdef4}
    .security-copy h2{color:#fff;font-size:31px;margin:12px 0}.security-copy p{font-size:14px}
    .safety-points{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}
    .safety-item{padding:21px;border:1px solid var(--line);border-radius:14px;background:#fff}
    .safety-item b{display:block;color:var(--ink);margin-bottom:5px}.safety-item p{font-size:13px;line-height:1.7;color:var(--muted);margin:0}
    .faq-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:50px}
    .faq-lead{padding-top:8px}.faq-lead h2{font-size:34px;margin:11px 0}.faq-lead p{color:var(--muted)}
    .faq-list{display:grid;gap:11px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:13px;overflow:hidden}
    .faq-q{width:100%;background:#fff;padding:18px 20px;color:var(--ink);display:flex;justify-content:space-between;align-items:center;text-align:left;font-weight:800}
    .faq-q span:last-child{color:var(--blue);font-size:21px;transition:.2s}
    .faq-a{display:none;padding:0 20px 18px;color:var(--muted);font-size:14px}
    .faq-item.open .faq-a{display:block}.faq-item.open .faq-q span:last-child{transform:rotate(45deg)}
    .cta{padding:74px 0;background:linear-gradient(115deg,#0c4eb9,#1769e8 55%,#13a8ce);color:#fff;overflow:hidden}
    .cta-box{position:relative;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .cta-box:after{content:"28";position:absolute;right:0;top:-89px;color:rgba(255,255,255,.1);font-size:230px;font-weight:900;line-height:1}
    .cta h2{color:#fff;font-size:clamp(29px,3.5vw,44px);margin:0 0 10px;position:relative;z-index:1}.cta p{color:#dcecff;margin:0;position:relative;z-index:1}
    .cta .btn{position:relative;z-index:1;white-space:nowrap}
    .footer{background:#0d1d37;color:#aebed4;padding:58px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:55px;padding-bottom:42px}
    .footer .logo{color:#fff}.footer-brand p{font-size:14px;max-width:360px;margin:17px 0 0;color:#9caec9}
    .footer h4{color:#fff;font-size:15px;margin:4px 0 17px}
    .footer-links{display:grid;gap:9px}.footer-links a{font-size:14px;transition:.2s}.footer-links a:hover{color:#fff;transform:translateX(3px)}
    .footer-bottom{padding-top:22px;border-top:1px solid rgba(193,215,244,.14);display:flex;justify-content:space-between;gap:18px;align-items:center;font-size:12px;color:#8496b2}
    .footer-bottom a:hover{color:#fff}
    @media(max-width:1024px){
      .nav-wrap{gap:10px}.nav a{padding:8px 7px;font-size:13px}.nav-cta{display:none}
      .service-grid{grid-template-columns:repeat(2,1fr)}.inner-hero-grid{gap:28px}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 32px))}.topbar{height:67px}.mobile-toggle{display:grid;place-items:center}
      .nav-wrap{position:absolute;top:67px;left:0;right:0;display:none;background:#fff;border-bottom:1px solid var(--line);padding:12px 16px}.nav-wrap.show{display:block}
      .nav{display:flex;overflow:auto;padding-bottom:5px}.nav a{font-size:14px}.inner-hero{padding:57px 0}.inner-hero-grid,.intro-grid,.notice-wrap,.security-grid,.faq-grid{grid-template-columns:1fr}
      .guide-panel{max-width:500px}.steps{grid-template-columns:1fr}.step-side{padding:25px}.visual-card img{height:320px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-brand{grid-column:1/-1}
    }
    @media(max-width:520px){
      body{font-size:15px}.section{padding:58px 0}.inner-hero h1{font-size:39px}.inner-hero p{font-size:15px}.hero-actions .btn{width:100%}
      .service-grid,.safety-points{grid-template-columns:1fr}.step-item{grid-template-columns:45px 1fr;padding:18px}.float-note{right:10px;bottom:12px;width:190px}
      .notice-main,.security-copy{padding:26px 22px}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.footer-bottom,.cta-box{align-items:flex-start;flex-direction:column}.cta{padding:56px 0}
    }