/* roulang page: index */
:root{
            --ink:#f4f7fb;
            --muted:#96a5b8;
            --muted-2:#68788d;
            --bg:#070b13;
            --panel:#101722;
            --panel-2:#141e2b;
            --line:rgba(180,205,230,.14);
            --cyan:#66e5e9;
            --violet:#9b8cff;
            --orange:#ffb86b;
            --radius:22px;
            --shadow:0 22px 70px rgba(0,0,0,.3);
        }
        *,*::before,*::after{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;line-height:1.7;overflow-x:hidden}
        a{color:inherit;text-decoration:none;transition:.25s ease}
        img{max-width:100%;display:block}
        button,input{font:inherit}
        .container{max-width:1180px;margin:0 auto;padding:0 24px}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(7,11,19,.82);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
        .navbar{min-height:76px}
        .brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.04em;font-size:20px;white-space:nowrap}
        .brand-mark{width:13px;height:13px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 6px rgba(102,229,233,.1),0 0 24px var(--cyan)}
        .nav-link{color:var(--muted);font-size:14px;padding:9px 15px!important;border-radius:10px}
        .nav-link:hover,.nav-link.active{color:var(--ink);background:rgba(102,229,233,.09)}
        .nav-link.active{box-shadow:inset 0 -2px var(--cyan)}
        .nav-action,.btn-main{display:inline-flex;align-items:center;justify-content:center;border:1px solid rgba(102,229,233,.35);background:var(--cyan);color:#071116;border-radius:12px;padding:11px 18px;font-weight:700;font-size:14px;box-shadow:0 8px 28px rgba(102,229,233,.14)}
        .nav-action:hover,.btn-main:hover{background:#a4f5f5;color:#071116;transform:translateY(-2px)}
        .navbar-toggler{border:1px solid var(--line);padding:8px 10px}
        .navbar-toggler:focus{box-shadow:0 0 0 3px rgba(102,229,233,.2)}
        .hero{position:relative;padding:92px 0 78px;overflow:hidden}
        .hero:before{content:"";position:absolute;width:620px;height:420px;right:-150px;top:-110px;background:radial-gradient(circle,rgba(102,229,233,.16),transparent 68%);pointer-events:none}
        .eyebrow,.section-kicker{color:var(--cyan);font-size:12px;font-weight:800;letter-spacing:.18em;text-transform:uppercase}
        h1{font-size:clamp(42px,6vw,78px);line-height:1.08;letter-spacing:-.075em;margin:18px 0 24px;max-width:720px}
        .hero-copy{font-size:18px;color:#bdc9d7;max-width:650px;margin-bottom:30px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
        .btn-ghost{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:12px;padding:11px 18px;color:var(--ink);font-size:14px}
        .btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(102,229,233,.06)}
        .hero-points{display:flex;gap:26px;flex-wrap:wrap;margin-top:34px;color:var(--muted);font-size:13px}
        .hero-points strong{display:block;color:var(--ink);font-size:20px;line-height:1.2;margin-bottom:3px}
        .stage{margin:58px auto 0;max-width:1030px;border:1px solid var(--line);border-radius:28px;padding:15px;background:linear-gradient(135deg,rgba(155,140,255,.12),rgba(102,229,233,.05));box-shadow:var(--shadow);transform:perspective(1200px) rotateX(2deg)}
        .stage-window{background:#0b111b;border:1px solid rgba(255,255,255,.09);border-radius:19px;overflow:hidden}
        .window-bar{height:48px;padding:0 18px;display:flex;align-items:center;gap:7px;border-bottom:1px solid var(--line)}
        .dot{width:8px;height:8px;border-radius:50%;background:#405065}.dot:first-child{background:#ff8f83}.dot:nth-child(2){background:#ffd27d}.dot:nth-child(3){background:#77e4bc}
        .stage-body{display:grid;grid-template-columns:210px 1fr;min-height:330px}
        .stage-side{padding:24px 18px;border-right:1px solid var(--line)}
        .side-line{height:9px;background:#1c2a3b;border-radius:8px;margin:15px 0;width:80%}
        .side-line.short{width:53%}.side-line.active{background:rgba(102,229,233,.7);width:68%}
        .stage-content{padding:27px}
        .mini-title{font-size:24px;font-weight:800;letter-spacing:-.04em;margin-bottom:8px}
        .mini-text{color:var(--muted);font-size:13px;margin-bottom:22px}
        .stage-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}
        .stage-card{height:118px;border:1px solid var(--line);border-radius:14px;padding:14px;background:linear-gradient(145deg,#172536,#101722)}
        .stage-card b{display:block;font-size:12px;margin-top:35px}.stage-card span{font-size:11px;color:var(--muted)}
        .section{padding:88px 0}
        .section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:30px}
        .section-title{font-size:clamp(28px,4vw,44px);line-height:1.15;letter-spacing:-.055em;margin:9px 0 0}
        .section-desc{max-width:560px;color:var(--muted);margin:0}
        .matrix{display:grid;grid-template-columns:1.15fr .85fr .85fr;grid-template-rows:180px 180px;gap:16px}
        .matrix-card,.content-card,.quote-card,.security-card,.milestone{border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);padding:25px;transition:.28s ease}
        .matrix-card:hover,.content-card:hover,.quote-card:hover,.security-card:hover{transform:translateY(-5px);border-color:rgba(102,229,233,.5);box-shadow:0 16px 35px rgba(0,0,0,.2)}
        .matrix-card.featured{grid-row:span 2;background:linear-gradient(145deg,#17263a,#101722 65%);position:relative;overflow:hidden}
        .matrix-card.featured:after{content:"";position:absolute;width:190px;height:190px;right:-45px;bottom:-70px;border-radius:50%;border:25px solid rgba(102,229,233,.09)}
        .matrix-card h3{font-size:20px;letter-spacing:-.04em;margin:17px 0 8px}.matrix-card p{font-size:13px;color:var(--muted);margin:0}
        .icon{color:var(--cyan);font-size:22px}.tag{display:inline-flex;padding:4px 9px;border:1px solid rgba(102,229,233,.24);border-radius:20px;color:var(--cyan);font-size:11px}
        .dark-strip{background:#0d141e;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
        .milestones{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:20px;overflow:hidden}
        .milestone{border:0;border-radius:0;background:var(--panel);min-height:150px}.milestone strong{display:block;color:var(--cyan);font-size:34px;letter-spacing:-.06em}.milestone span{color:var(--muted);font-size:13px}
        .news-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:18px}
        .news-list{border-top:1px solid var(--line)}
        .news-item{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:21px 4px;border-bottom:1px solid var(--line)}
        .news-item h3{font-size:16px;margin:0 0 4px}.news-item p{font-size:13px;color:var(--muted);margin:0}.news-date{color:var(--muted-2);font-size:12px;white-space:nowrap}
        .quote-card{background:linear-gradient(145deg,#171c34,#111722)}.stars{color:var(--orange);letter-spacing:3px}.quote-card blockquote{font-size:20px;line-height:1.55;margin:20px 0}.quote-card cite{color:var(--muted);font-size:13px;font-style:normal}
        .security-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.security-card{padding:21px}.security-card h3{font-size:16px;margin:12px 0 5px}.security-card p{font-size:12px;color:var(--muted);margin:0}
        .app-panel{display:grid;grid-template-columns:1fr .95fr;gap:35px;align-items:center;background:linear-gradient(120deg,#151e31,#0f1920);border:1px solid var(--line);border-radius:28px;padding:48px}
        .app-panel h2{font-size:clamp(28px,4vw,45px);line-height:1.15;letter-spacing:-.06em;margin:13px 0 17px}.app-panel p{color:var(--muted);max-width:520px}
        .app-visual{min-height:220px;display:flex;align-items:center;justify-content:center;position:relative}.app-orb{width:210px;height:210px;border-radius:50%;border:1px solid rgba(102,229,233,.55);box-shadow:0 0 0 28px rgba(102,229,233,.04),0 0 70px rgba(102,229,233,.22);display:flex;align-items:center;justify-content:center;color:var(--cyan);font-weight:800;text-align:center;padding:30px}
        .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.accordion-item{background:var(--panel);border:1px solid var(--line)!important;border-radius:15px!important;margin-bottom:12px;overflow:hidden}.accordion-button{background:var(--panel);color:var(--ink);font-weight:700;padding:20px}.accordion-button:not(.collapsed){background:#162333;color:var(--cyan);box-shadow:none}.accordion-button:focus{box-shadow:0 0 0 3px rgba(102,229,233,.15)}.accordion-body{background:#121c29;color:var(--muted);font-size:14px;padding:0 20px 20px}
        .cta{padding:76px 0;text-align:center}.cta-box{border:1px solid rgba(102,229,233,.25);border-radius:24px;padding:55px 25px;background:radial-gradient(circle at 50% 0,rgba(102,229,233,.13),transparent 55%),var(--panel)}.cta h2{font-size:clamp(30px,4vw,48px);letter-spacing:-.06em;margin:10px 0 14px}.cta p{color:var(--muted);max-width:620px;margin:0 auto 25px}
        footer{border-top:1px solid var(--line);padding:34px 0;color:var(--muted);font-size:13px}.footer-inner{display:flex;justify-content:space-between;gap:20px;align-items:center}.footer-brand{color:var(--ink);font-weight:700}
        @media(max-width:900px){.matrix{grid-template-columns:1fr 1fr;grid-template-rows:auto}.matrix-card.featured{grid-row:span 2}.news-layout,.app-panel{grid-template-columns:1fr}.security-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:767px){.hero{padding:65px 0 55px}h1{font-size:45px}.stage-body{grid-template-columns:1fr}.stage-side{display:none}.stage-content{padding:18px}.stage-grid{grid-template-columns:1fr 1fr}.section{padding:62px 0}.section-head{display:block}.section-desc{margin-top:15px}.matrix{display:block}.matrix-card{margin-bottom:14px;min-height:150px}.milestones{grid-template-columns:1fr 1fr}.milestone{min-height:125px}.milestone strong{font-size:28px}.faq-grid{display:block}.app-panel{padding:32px 22px}.footer-inner{display:block}.footer-inner>div+div{margin-top:12px}}
        @media(max-width:520px){.container{padding:0 17px}.brand{font-size:16px}.hero-points{gap:15px}.stage-grid{grid-template-columns:1fr}.security-grid{grid-template-columns:1fr}.news-item{align-items:flex-start}.news-date{display:none}.cta-box{padding:42px 18px}}

/* roulang page: category1 */
:root{
 --ink:#f4f7fb;--muted:#96a5b8;--muted-2:#68788d;--bg:#070b13;
 --panel:#101722;--panel-2:#141e2b;--line:rgba(180,205,230,.14);
 --cyan:#66e5e9;--violet:#9b8cff;--orange:#ffb86b;--radius:22px;
 --shadow:0 22px 70px rgba(0,0,0,.3)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:.25s ease}
button,input{font:inherit}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
.site-header{position:sticky;top:0;z-index:20;background:rgba(7,11,19,.84);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.navbar{min-height:76px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.04em;font-size:20px;white-space:nowrap}
.brand-mark{width:13px;height:13px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 6px rgba(102,229,233,.1),0 0 24px var(--cyan)}
.nav-link{color:var(--muted);font-size:14px;padding:9px 15px!important;border-radius:10px}
.nav-link:hover,.nav-link.active{color:var(--ink);background:rgba(102,229,233,.09)}
.nav-link.active{box-shadow:inset 0 -2px var(--cyan)}
.nav-action,.btn-main{display:inline-flex;align-items:center;justify-content:center;border:1px solid rgba(102,229,233,.35);background:var(--cyan);color:#071116;border-radius:12px;padding:11px 18px;font-weight:700;font-size:14px;box-shadow:0 8px 28px rgba(102,229,233,.14)}
.nav-action:hover,.btn-main:hover{background:#a4f5f5;color:#071116;transform:translateY(-2px)}
.navbar-toggler{border:1px solid var(--line);padding:8px 10px}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(102,229,233,.2)}
.hero{position:relative;padding:86px 0 76px;overflow:hidden}
.hero:before{content:"";position:absolute;width:620px;height:450px;right:-160px;top:-130px;background:radial-gradient(circle,rgba(102,229,233,.16),transparent 68%);pointer-events:none}
.hero:after{content:"";position:absolute;width:420px;height:300px;left:-220px;bottom:-160px;background:radial-gradient(circle,rgba(155,140,255,.13),transparent 68%);pointer-events:none}
.eyebrow,.section-kicker{color:var(--cyan);font-size:12px;font-weight:800;letter-spacing:.18em}
.hero h1{font-size:clamp(42px,7vw,78px);line-height:1.08;letter-spacing:-.08em;margin:15px 0 22px;max-width:760px}
.hero-copy{font-size:18px;color:#bdc9d7;max-width:650px;margin-bottom:29px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:12px;padding:11px 18px;color:var(--ink);font-size:14px}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(102,229,233,.06)}
.hero-points{display:flex;gap:28px;flex-wrap:wrap;margin-top:32px;color:var(--muted);font-size:13px}
.hero-points strong{display:block;color:var(--ink);font-size:21px;line-height:1.2;margin-bottom:3px}
.flash-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:13px 17px;border:1px solid rgba(255,184,107,.28);border-radius:14px;background:rgba(255,184,107,.07);color:#ffd19b;font-size:13px;margin-bottom:20px}
.countdown{display:flex;gap:7px;align-items:center;color:var(--orange);font-weight:800;white-space:nowrap}
.time-box{padding:3px 8px;border-radius:7px;background:rgba(255,184,107,.15);min-width:31px;text-align:center}
.promo-card{height:100%;min-height:300px;border:1px solid rgba(102,229,233,.25);border-radius:26px;padding:25px;background:linear-gradient(145deg,#17263a,#101722 70%);box-shadow:var(--shadow);position:relative;overflow:hidden}
.promo-card:after{content:"";position:absolute;width:230px;height:230px;border-radius:50%;right:-80px;bottom:-110px;border:30px solid rgba(102,229,233,.1)}
.promo-top{display:flex;justify-content:space-between;align-items:center}
.promo-icon{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;font-size:25px;background:rgba(102,229,233,.12);border:1px solid rgba(102,229,233,.28)}
.tag{display:inline-flex;padding:4px 9px;border:1px solid rgba(102,229,233,.24);border-radius:20px;color:var(--cyan);font-size:11px}
.promo-card h2{font-size:29px;letter-spacing:-.06em;margin:28px 0 9px}
.promo-card p{color:var(--muted);font-size:14px;max-width:390px}
.promo-list{list-style:none;padding:0;margin:22px 0 25px;display:grid;gap:9px;color:#cbd7e4;font-size:13px}
.promo-list li:before{content:"＋";color:var(--cyan);margin-right:7px;font-weight:700}
.section{padding:88px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:30px}
.section-title{font-size:clamp(29px,4vw,46px);line-height:1.15;letter-spacing:-.06em;margin:9px 0 0}
.section-desc{max-width:560px;color:var(--muted);margin:0}
.topic-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:14px}
.topic-card{min-height:240px;border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);padding:25px;transition:.28s ease;position:relative;overflow:hidden}
.topic-card:hover{transform:translateY(-5px);border-color:rgba(102,229,233,.48);box-shadow:0 16px 35px rgba(0,0,0,.22)}
.topic-card.large{grid-row:span 2;min-height:494px;background:linear-gradient(145deg,#17263a,#101722 66%)}
.topic-card .number{color:var(--muted-2);font-size:12px;letter-spacing:.12em}
.topic-card h3{font-size:23px;letter-spacing:-.05em;margin:34px 0 10px}
.topic-card p{font-size:13px;color:var(--muted);margin:0;max-width:390px}
.topic-card .arrow{position:absolute;right:24px;bottom:22px;color:var(--cyan);font-size:22px}
.topic-card.large h3{font-size:34px;margin-top:180px}
.topic-mark{width:52px;height:4px;background:var(--cyan);border-radius:4px;box-shadow:0 0 16px var(--cyan);margin-top:17px}
.split-panel{display:grid;grid-template-columns:.8fr 1.2fr;gap:18px;align-items:stretch}
.quote-card,.process-card,.info-card{border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);padding:27px}
.quote-card{background:linear-gradient(145deg,#171c34,#111722)}
.quote-card blockquote{font-size:25px;line-height:1.5;letter-spacing:-.04em;margin:20px 0 28px}
.quote-card cite{color:var(--muted);font-size:13px;font-style:normal}
.process-list{display:grid;gap:0}
.process-row{display:grid;grid-template-columns:58px 1fr;gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}
.process-row:last-child{border-bottom:0}
.step-no{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;color:#071116;background:var(--cyan);font-weight:800}
.process-row h3{font-size:17px;margin:0 0 4px}
.process-row p{font-size:13px;color:var(--muted);margin:0}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stat{border-top:2px solid var(--cyan);padding:20px 2px}
.stat strong{display:block;font-size:35px;letter-spacing:-.06em}
.stat span{font-size:13px;color:var(--muted)}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.accordion-item{background:var(--panel);border:1px solid var(--line)!important;border-radius:15px!important;margin-bottom:12px;overflow:hidden}
.accordion-button{background:var(--panel);color:var(--ink);font-weight:700;padding:20px}
.accordion-button:not(.collapsed){background:#162333;color:var(--cyan);box-shadow:none}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(102,229,233,.15)}
.accordion-button:after{filter:invert(1);opacity:.7}
.accordion-body{background:#121c29;color:var(--muted);font-size:14px;padding:0 20px 20px}
.cta{padding:76px 0}
.cta-box{text-align:center;border:1px solid rgba(102,229,233,.25);border-radius:24px;padding:55px 25px;background:radial-gradient(circle at 50% 0,rgba(102,229,233,.13),transparent 55%),var(--panel)}
.cta h2{font-size:clamp(30px,4vw,48px);letter-spacing:-.06em;margin:10px 0 14px}
.cta p{color:var(--muted);max-width:600px;margin:0 auto 25px}
footer{border-top:1px solid var(--line);color:var(--muted);font-size:13px}
.footer-inner{min-height:110px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.footer-brand{color:var(--ink);font-weight:800;font-size:16px}
::selection{background:var(--cyan);color:#071116}
:focus-visible{outline:3px solid rgba(102,229,233,.55);outline-offset:3px}
@media(max-width:991px){
 .topic-grid{grid-template-columns:1fr 1fr}.topic-card.large{grid-row:span 1;min-height:330px}.topic-card.large h3{margin-top:110px}
 .split-panel{grid-template-columns:1fr}.stats{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:767px){
 .container{padding:0 18px}.navbar{min-height:68px}.brand{font-size:17px}.hero{padding:60px 0 50px}
 .hero h1{font-size:clamp(39px,12vw,62px)}.hero-copy{font-size:16px}.flash-bar{align-items:flex-start;flex-direction:column}
 .topic-grid,.faq-grid{grid-template-columns:1fr}.topic-card.large{min-height:300px}.section{padding:65px 0}
 .section-head{display:block}.section-desc{margin-top:14px}.footer-inner{padding-top:25px;padding-bottom:25px;display:block}.footer-inner>div+div{margin-top:10px}
}
@media(max-width:520px){
 .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}.hero-points{gap:18px}.stats{gap:8px}.stat strong{font-size:28px}
 .promo-card{padding:21px}.topic-card{min-height:205px;padding:21px}.topic-card h3{margin-top:25px;font-size:21px}
}