/* roulang page: index */
:root{
            --bg:#071326;--bg2:#0b1d38;--panel:rgba(17,42,73,.72);--panel2:#10294a;
            --line:rgba(167,207,241,.18);--text:#f4f8fc;--muted:#9db2c9;--yellow:#f6c85f;
            --orange:#f28e4b;--cyan:#65d7d2;--purple:#9d9bff;--radius:20px;
            --shadow:0 20px 60px rgba(0,0,0,.28);--glow:0 0 28px rgba(246,200,95,.24)
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;line-height:1.7;overflow-x:hidden}
        body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.22;background-image:linear-gradient(rgba(101,215,210,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(101,215,210,.035) 1px,transparent 1px);background-size:48px 48px;z-index:-2}
        body:after{content:"";position:fixed;width:520px;height:520px;right:-180px;top:90px;background:rgba(40,119,173,.14);filter:blur(90px);border-radius:50%;z-index:-1}
        a{color:inherit;text-decoration:none} img{max-width:100%;display:block} button,input,select,textarea{font:inherit}
        .container{max-width:1240px}
        .site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(7,19,38,.78);border-bottom:1px solid transparent;backdrop-filter:blur(16px);transition:.3s}
        .site-header.scrolled{border-color:var(--line);box-shadow:0 10px 30px rgba(0,0,0,.2)}
        .navbar{min-height:78px}.navbar-brand{display:flex;align-items:center;gap:10px;font-size:1.28rem;font-weight:800;letter-spacing:.02em}
        .brand-mark{width:34px;height:34px;border-radius:11px;background:linear-gradient(145deg,var(--yellow),var(--orange));position:relative;box-shadow:var(--glow)}
        .brand-mark:after{content:"";position:absolute;width:12px;height:12px;border:2px solid #17243a;border-radius:4px;left:11px;top:11px}
        .nav-link{color:#b9c8d8!important;margin:0 6px;padding:10px 12px!important;font-size:.94rem;border-radius:10px;transition:.25s}
        .nav-link:hover,.nav-link.active{color:var(--text)!important;background:rgba(101,215,210,.1)}
        .nav-cta,.btn-primary{background:linear-gradient(110deg,var(--yellow),var(--orange));color:#162238;border:0;font-weight:800;box-shadow:0 8px 24px rgba(242,142,75,.22)}
        .nav-cta{padding:10px 17px;border-radius:11px;font-size:.9rem}.nav-cta:hover,.btn-primary:hover{color:#101b2d;transform:translateY(-2px);filter:brightness(1.08)}
        .navbar-toggler{border:1px solid var(--line);padding:9px 11px}.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(101,215,210,.22)}
        .hero{min-height:680px;padding:150px 0 88px;position:relative;display:flex;align-items:center;background:linear-gradient(90deg,rgba(7,19,38,.96) 17%,rgba(7,19,38,.78) 53%,rgba(7,19,38,.52)),url('/assets/images/faeb331519b1601e.jpg') center/cover}
        .hero:after{content:"";position:absolute;inset:auto 0 0;height:130px;background:linear-gradient(transparent,var(--bg))}
        .eyebrow,.section-kicker{color:var(--yellow);font-size:.78rem;font-weight:800;letter-spacing:.15em;text-transform:uppercase}
        h1,h2,h3{font-weight:800;letter-spacing:-.035em;line-height:1.2;margin:0 0 18px}h1{font-size:clamp(2.5rem,5vw,5rem);max-width:800px}h2{font-size:clamp(1.8rem,3vw,2.8rem)}h3{font-size:1.25rem}
        .hero-copy{max-width:760px;position:relative;z-index:1}.hero-copy p{color:#c7d5e3;font-size:1.08rem;max-width:720px;margin:24px 0 30px}
        .btn{min-height:46px;border-radius:12px;padding:11px 20px;transition:.25s}.btn:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,.accordion-button:focus-visible{outline:3px solid rgba(101,215,210,.6);outline-offset:3px}
        .btn-outline-light{border-color:var(--line);color:var(--text)}.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:var(--cyan);color:var(--text);transform:translateY(-2px)}
        .hero-strip{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.hero-chip{border:1px solid var(--line);background:rgba(10,31,57,.7);padding:9px 14px;border-radius:30px;color:#c6d8e9;font-size:.88rem}
        main section{padding:92px 0;position:relative}.section-head{max-width:730px;margin-bottom:38px}.section-head p{color:var(--muted);margin:0;font-size:1rem}
        .kpi-band{background:#0a1b33;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:30px 0}.kpi-row{display:grid;grid-template-columns:repeat(4,1fr);gap:0}.kpi{padding:10px 28px;border-right:1px solid var(--line)}.kpi:last-child{border:0}.kpi strong{display:block;font-size:2rem;color:var(--yellow);line-height:1.2}.kpi span{color:var(--muted);font-size:.9rem}.status{display:inline-flex;align-items:center;gap:6px;color:var(--cyan);font-size:.76rem}.status:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
        .glass{background:linear-gradient(145deg,rgba(20,52,87,.76),rgba(10,27,51,.65));border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);backdrop-filter:blur(12px)}
        .scene-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:16px}.scene-card{padding:25px;min-height:190px}.scene-card:first-child{background:linear-gradient(145deg,rgba(44,109,129,.45),rgba(12,34,61,.8))}.scene-card p,.feature p,.compare p,.support-item p,.quick p{color:var(--muted);font-size:.92rem;margin:0}.tag{display:inline-block;color:var(--yellow);font-size:.76rem;border:1px solid rgba(246,200,95,.35);padding:4px 9px;border-radius:20px;margin-bottom:18px}
        .matrix{display:grid;grid-template-columns:1.4fr 1fr 1fr;grid-template-rows:auto auto;gap:16px}.feature{padding:27px}.feature.large{grid-row:span 2;background:linear-gradient(145deg,rgba(47,86,137,.82),rgba(12,29,53,.78));min-height:390px}.feature .icon{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:rgba(246,200,95,.14);color:var(--yellow);font-weight:800;margin-bottom:24px}.text-link{display:inline-block;color:var(--cyan);font-size:.88rem;margin-top:18px}.text-link:hover{color:var(--yellow)}
        .depth{display:grid;grid-template-columns:1fr 1.1fr;gap:42px;align-items:center}.app-panel{padding:22px;background:#091a31;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}.panel-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:17px;margin-bottom:18px}.panel-row{display:flex;align-items:center;justify-content:space-between;padding:17px 0;border-bottom:1px solid rgba(167,207,241,.1)}.panel-row:last-child{border:0}.mini-bar{height:7px;width:130px;background:#183453;border-radius:10px;overflow:hidden}.mini-bar i{display:block;width:72%;height:100%;background:var(--cyan);border-radius:inherit}.step-list{display:grid;gap:18px;margin-top:25px}.step{display:flex;gap:15px}.step-no{flex:0 0 31px;height:31px;border-radius:10px;background:rgba(246,200,95,.15);color:var(--yellow);display:grid;place-items:center;font-weight:800}.step b{display:block}.step small{color:var(--muted)}
        .compare-wrap{display:grid;grid-template-columns:1fr 70px 1fr;align-items:stretch;gap:16px}.compare{padding:28px}.compare.before{border-color:rgba(157,155,255,.25)}.compare.after{border-color:rgba(101,215,210,.45)}.compare ul{margin:20px 0 0;padding:0;list-style:none}.compare li{padding:9px 0;border-bottom:1px solid var(--line);color:#c6d5e5}.compare li:before{content:"＋";color:var(--cyan);margin-right:8px}.before li:before{content:"—";color:#9d9bff}.versus{align-self:center;width:56px;height:56px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;color:var(--yellow);font-weight:800}
        .usage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.usage{padding:23px;min-height:180px}.usage strong{display:block;margin:20px 0 8px}.usage small{color:var(--muted)}
        .timeline{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:15px}.timeline:before{content:"";position:absolute;top:21px;left:8%;right:8%;height:1px;background:linear-gradient(90deg,var(--yellow),var(--cyan));opacity:.55}.node{position:relative;padding-top:52px}.node i{position:absolute;top:10px;left:0;width:24px;height:24px;border:6px solid var(--bg);border-radius:50%;background:var(--yellow);box-shadow:0 0 0 1px var(--yellow),0 0 17px rgba(246,200,95,.5)}.node span{color:var(--yellow);font-size:.75rem}.node p{color:var(--muted);font-size:.88rem}
        .news-layout{display:grid;grid-template-columns:1.15fr 1fr;gap:20px}.news-feature{padding:30px;min-height:270px;background:linear-gradient(120deg,rgba(32,77,109,.88),rgba(11,29,54,.85)),url('/assets/images/d8d3aa90b3b2d46a.jpg') center/cover}.news-list{padding:10px 26px}.news-item{display:flex;gap:20px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}.news-item:last-child{border:0}.date{color:var(--yellow);font-size:.78rem;min-width:70px}.news-item p{margin:4px 0 0;color:var(--muted);font-size:.85rem}
        .support-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.support-item{padding:25px}.support-item h3{font-size:1.08rem}.support-icon{color:var(--cyan);font-size:1.6rem;margin-bottom:16px}
        .quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.quick{padding:22px}.quick b{display:block;color:#dce9f5;margin-bottom:8px}
        .accordion-item{background:transparent;border:1px solid var(--line);margin-bottom:12px;border-radius:14px!important;overflow:hidden}.accordion-button{background:rgba(16,41,74,.72);color:var(--text);font-weight:700;padding:20px}.accordion-button:not(.collapsed){background:rgba(39,83,116,.8);color:var(--yellow);box-shadow:none}.accordion-button:after{filter:invert(1) brightness(2)}.accordion-body{background:rgba(8,25,47,.72);color:var(--muted);padding:20px}
        .contact-box{display:grid;grid-template-columns:.9fr 1.1fr;gap:45px;padding:42px;background:linear-gradient(135deg,rgba(28,69,106,.82),rgba(10,27,50,.85));border:1px solid var(--line);border-radius:26px}.contact-info p{color:var(--muted)}.contact-points{display:grid;gap:14px;margin-top:26px}.contact-points div{display:flex;gap:12px;color:#cbd9e7}.contact-points b{color:var(--yellow)}.form-control,.form-select{background:rgba(4,17,33,.72);border:1px solid var(--line);color:var(--text);min-height:48px;border-radius:11px}.form-control::placeholder{color:#71869d}.form-control:focus,.form-select:focus{background:rgba(4,17,33,.9);color:var(--text);border-color:var(--cyan);box-shadow:0 0 0 3px rgba(101,215,210,.1)}.form-select option{background:#0b1d38}.form-label{font-size:.86rem;color:#cbd9e7}.form-status{display:none;padding:11px 14px;border-radius:10px;margin-top:15px;font-size:.88rem}.form-status.error{display:block;background:rgba(225,90,90,.14);color:#ffadad}.form-status.success{display:block;background:rgba(101,215,210,.12);color:var(--cyan)}
        footer{background:#040d1b;border-top:1px solid var(--line);padding:50px 0 24px}.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:30px}.footer-brand p{color:var(--muted);max-width:350px;font-size:.9rem}.footer-title{font-weight:800;margin-bottom:15px}.footer-links{display:grid;gap:9px;color:var(--muted);font-size:.9rem}.footer-links a:hover{color:var(--yellow)}.copyright{margin-top:42px;padding-top:20px;border-top:1px solid var(--line);color:#71869d;font-size:.78rem;display:flex;justify-content:space-between;gap:20px}
        @media(max-width:992px){.navbar-collapse{background:#091a31;padding:16px;border:1px solid var(--line);border-radius:14px;margin-top:10px}.scene-grid,.matrix,.news-layout,.depth,.contact-box{grid-template-columns:1fr 1fr}.feature.large{grid-row:auto}.usage-grid{grid-template-columns:repeat(2,1fr)}.timeline{grid-template-columns:repeat(3,1fr);gap:25px}.timeline:before{display:none}}
        @media(max-width:768px){main section{padding:68px 0}.hero{min-height:650px;padding-top:130px}.kpi-row{grid-template-columns:repeat(2,1fr)}.kpi{border-bottom:1px solid var(--line);padding:16px}.kpi:nth-child(2){border-right:0}.scene-grid,.matrix,.depth,.news-layout,.support-grid,.quick-grid,.contact-box{grid-template-columns:1fr}.compare-wrap{grid-template-columns:1fr;gap:12px}.versus{margin:auto}.timeline{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.copyright{display:block}.copyright span{display:block;margin-top:8px}}
        @media(max-width:520px){h1{font-size:2.45rem}.hero-copy p{font-size:.98rem}.hero .btn{width:100%;margin-bottom:8px}.usage-grid{grid-template-columns:1fr}.timeline{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.kpi strong{font-size:1.65rem}.contact-box{padding:25px 19px}}

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