/* roulang page: index */
:root{
--ink:#0a0c0f;
--ink2:#0e1217;
--panel:#141a21;
--paper:#f3f1ec;
--gold:#d9a95c;
--gold2:#a97c33;
--mute:#959da7;
--line:rgba(255,255,255,.09);
--r:16px;
--sh:0 22px 46px -28px rgba(0,0,0,.95);
--gap:clamp(16px,3.2vw,32px);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--ink);color:var(--paper);font:16px/1.72 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;letter-spacing:.01em}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.24;letter-spacing:-.012em}
p{margin:0}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:6px}
.rgfx-wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}

/* 顶栏 */
.rgfx-header{position:sticky;top:0;z-index:60;background:rgba(9,11,14,.88);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.rgfx-nav{display:flex;align-items:center;gap:16px;height:68px;overflow:hidden}
.rgfx-logo{display:flex;align-items:center;gap:10px;flex:none}
.rgfx-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(145deg,var(--gold),var(--gold2));color:#191005;display:grid;place-items:center;font-size:17px;font-weight:800;letter-spacing:0}
.rgfx-logo b{font-size:16.5px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.rgfx-menu{display:flex;gap:4px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.rgfx-menu::-webkit-scrollbar{display:none}
.rgfx-menu a{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:999px;font-size:14.8px;color:var(--mute);white-space:nowrap;transition:color .22s,background .22s}
.rgfx-menu a:hover,.rgfx-menu a:focus-visible{color:var(--paper);background:rgba(255,255,255,.06)}

/* 首屏 */
.rgfx-hero{position:relative;overflow:hidden;padding:clamp(34px,5vw,66px) 0 clamp(42px,6vw,78px);background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat}
.rgfx-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(102deg,rgba(10,12,15,.97),rgba(10,12,15,.9) 52%,rgba(10,12,15,.64));pointer-events:none}
.rgfx-hero .rgfx-wrap{position:relative;z-index:1}
.rgfx-hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(24px,4vw,54px);align-items:center}
.rgfx-eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12.5px;letter-spacing:.2em;color:var(--gold);margin-bottom:16px}
.rgfx-eyebrow::before{content:"";width:26px;height:1px;background:var(--gold)}
.rgfx-hero h1{font-size:clamp(29px,4.5vw,54px);line-height:1.12;letter-spacing:-.03em}
.rgfx-hero h1 em{font-style:normal;color:var(--gold)}
.rgfx-lead{margin-top:20px;max-width:560px;color:#c4cad2;font-size:15.4px;line-height:1.85}
.rgfx-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.rgfx-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;transition:transform .26s,box-shadow .26s,background .26s,border-color .26s,color .26s}
.rgfx-btn-a{background:linear-gradient(135deg,var(--gold),var(--gold2));color:#181006;box-shadow:0 16px 32px -18px rgba(217,169,92,.9)}
.rgfx-btn-a:hover{transform:translateY(-2px)}
.rgfx-btn-b{border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--paper)}
.rgfx-btn-b:hover{border-color:var(--gold);color:var(--gold);transform:translateY(-2px)}
.rgfx-chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:28px}
.rgfx-chips li{font-size:12.8px;color:var(--mute);border:1px solid var(--line);border-radius:999px;padding:6px 14px}
.rgfx-stack{display:grid;grid-template-columns:1fr 1fr;gap:14px;padding-bottom:16px}
.rgfx-stack-main{grid-column:1/-1;position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh)}
.rgfx-stack-main img{width:100%;height:clamp(180px,23vw,258px);object-fit:cover}
.rgfx-stack-main figcaption{position:absolute;left:0;right:0;bottom:0;padding:40px 20px 16px;background:linear-gradient(transparent,rgba(8,10,13,.94))}
.rgfx-stack-main b{display:block;font-size:18px;letter-spacing:.01em}
.rgfx-stack-main small{display:block;margin-top:4px;font-size:12.6px;color:var(--gold)}
.rgfx-mini{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:var(--panel);transition:border-color .3s,transform .3s}
.rgfx-mini:hover{border-color:rgba(217,169,92,.5);transform:translateY(-3px)}
.rgfx-mini img{width:100%;height:118px;object-fit:cover}
.rgfx-mini span{display:block;padding:9px 12px;font-size:13px;color:#d3d9e0}
.rgfx-mini.up{transform:translateY(16px)}
.rgfx-mini.up:hover{transform:translateY(13px)}

/* 区块骨架 */
.rgfx-sec{padding:clamp(42px,5.2vw,70px) 0;border-top:1px solid var(--line)}
.rgfx-sec.alt{background:var(--ink2)}
.rgfx-head{margin-bottom:clamp(20px,3vw,32px)}
.rgfx-h2{font-size:clamp(21px,2.6vw,30px)}
.rgfx-h2 span{color:var(--gold)}
.rgfx-desc{margin-top:10px;max-width:680px;color:var(--mute);font-size:14.4px;line-height:1.8}

.rgfx-figs{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.rgfx-fig{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:22px 20px;transition:border-color .3s,transform .3s}
.rgfx-fig:hover{border-color:rgba(217,169,92,.42);transform:translateY(-3px)}
.rgfx-fig h3{font-size:15.6px;margin-bottom:9px}
.rgfx-fig h3::before{content:"";display:block;width:22px;height:2px;background:var(--gold);margin-bottom:12px}
.rgfx-fig p{font-size:13.5px;color:var(--mute);line-height:1.72}

.rgfx-vs{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap)}
.rgfx-vs-col{border:1px solid var(--line);border-radius:var(--r);padding:22px 24px;background:var(--panel)}
.rgfx-vs-col.yes{border-color:rgba(217,169,92,.42)}
.rgfx-vs-col h3{font-size:14.5px;letter-spacing:.06em;color:var(--gold);margin-bottom:14px}
.rgfx-vs-col.no h3{color:var(--mute)}
.rgfx-vs-col li{position:relative;padding-left:20px;margin-bottom:10px;font-size:14px;color:#c2c9d1;line-height:1.68}
.rgfx-vs-col li:last-child{margin-bottom:0}
.rgfx-vs-col li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--gold);opacity:.85}
.rgfx-vs-col.no li::before{background:var(--mute);border-radius:50%;opacity:.6}

.rgfx-trio{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.rgfx-trio article{background:linear-gradient(160deg,#151b22,#101519);border:1px solid var(--line);border-radius:var(--r);padding:24px 22px;transition:border-color .3s,transform .3s}
.rgfx-trio article:hover{border-color:rgba(217,169,92,.4);transform:translateY(-3px)}
.rgfx-trio h3{font-size:16px;margin-bottom:10px}
.rgfx-trio p{font-size:13.6px;color:var(--mute);line-height:1.75}
.rgfx-trio i{display:block;font-style:normal;margin-top:12px;font-size:12.6px;color:var(--gold)}

.rgfx-cats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.rgfx-cats li{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.rgfx-cats b{display:block;font-size:14.6px;font-weight:600;color:var(--gold);margin-bottom:6px}
.rgfx-cats span{display:block;font-size:13.2px;color:var(--mute);line-height:1.68}

.rgfx-entries{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.rgfx-entry{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:74px;padding:0 22px;border-radius:var(--r);border:1px solid var(--line);background:var(--panel);font-size:15px;font-weight:600;transition:border-color .3s,transform .3s,color .3s}
.rgfx-entry i{font-style:normal;color:var(--gold);font-size:16px}
.rgfx-entry:hover{border-color:var(--gold);transform:translateY(-3px)}

.rgfx-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.rgfx-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:transform .3s,border-color .3s,box-shadow .3s}
.rgfx-card:hover{transform:translateY(-4px);border-color:rgba(217,169,92,.45);box-shadow:var(--sh)}
.rgfx-thumb{position:relative;overflow:hidden;background:#191f26;aspect-ratio:2/3}
.rgfx-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .55s ease}
.rgfx-card:hover .rgfx-thumb img,.rgfx-big:hover .rgfx-thumb img,.rgfx-duo article:hover .rgfx-thumb img{transform:scale(1.06)}
.rgfx-badge{position:absolute;top:10px;left:10px;font-size:11.4px;padding:3px 9px;border-radius:6px;background:rgba(10,12,15,.84);color:var(--gold);border:1px solid rgba(217,169,92,.36)}
.rgfx-rate{position:absolute;right:10px;bottom:10px;font-size:12.6px;font-weight:700;color:var(--gold);background:rgba(10,12,15,.82);padding:2px 8px;border-radius:6px}
.rgfx-card h3{padding:13px 14px 0;font-size:15.2px}
.rgfx-card p{padding:6px 14px 16px;font-size:12.9px;color:var(--mute);line-height:1.62}

.rgfx-feature{display:grid;grid-template-columns:1.32fr 1fr;gap:var(--gap)}
.rgfx-big{border-radius:var(--r);overflow:hidden;border:1px solid var(--line);background:var(--panel);display:flex;flex-direction:column;transition:border-color .3s,box-shadow .3s}
.rgfx-big:hover{border-color:rgba(217,169,92,.45);box-shadow:var(--sh)}
.rgfx-big .rgfx-thumb{aspect-ratio:16/9}
.rgfx-big h3{padding:16px 18px 0;font-size:19px}
.rgfx-big p{padding:8px 18px 20px;font-size:13.4px;color:var(--mute);line-height:1.7}
.rgfx-feature-side{display:grid;gap:var(--gap);grid-template-rows:1fr 1fr}
.rgfx-line{display:flex;gap:0;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:border-color .3s,transform .3s}
.rgfx-line:hover{border-color:rgba(217,169,92,.45);transform:translateY(-2px)}
.rgfx-line img{width:116px;min-height:112px;height:100%;object-fit:cover;flex:none}
.rgfx-line div{padding:14px 16px;display:flex;flex-direction:column;justify-content:center;gap:6px}
.rgfx-line strong{font-size:15px;font-weight:600}
.rgfx-line small{font-size:12.6px;color:var(--gold)}
.rgfx-line p{font-size:12.8px;color:var(--mute);line-height:1.6}

.rgfx-duo{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap)}
.rgfx-duo article{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:border-color .3s,transform .3s}
.rgfx-duo article:hover{border-color:rgba(217,169,92,.45);transform:translateY(-3px)}
.rgfx-duo .rgfx-thumb{aspect-ratio:16/9}
.rgfx-duo h3{padding:15px 18px 0;font-size:17px}
.rgfx-duo p{padding:7px 18px 18px;font-size:13.3px;color:var(--mute);line-height:1.7}

.rgfx-top{display:grid;grid-template-columns:1fr 1fr;gap:0 36px}
.rgfx-top li{display:flex;align-items:center;gap:14px;padding:13px 0;border-bottom:1px dashed var(--line)}
.rgfx-top em{font-style:normal;flex:none;width:26px;font-size:14.6px;font-weight:800;color:var(--gold)}
.rgfx-top strong{font-size:14.8px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rgfx-top s{text-decoration:none;flex:none;margin-left:auto;font-size:12.6px;color:var(--paper);opacity:.85}
.rgfx-top i{font-style:normal;flex:none;font-size:12.2px;color:var(--mute);border:1px solid var(--line);border-radius:999px;padding:2px 9px}

.rgfx-news li{display:flex;gap:16px;align-items:flex-start;padding:15px 0;border-bottom:1px solid var(--line)}
.rgfx-news li:last-child{border-bottom:0}
.rgfx-news time{flex:none;font-size:12.4px;color:var(--gold);letter-spacing:.06em;padding-top:3px}
.rgfx-news h3{font-size:14.8px;font-weight:600}
.rgfx-news p{margin-top:5px;font-size:13px;color:var(--mute);line-height:1.68}

.rgfx-faq{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap)}
.rgfx-faq article{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:20px 22px}
.rgfx-faq h3{font-size:14.8px;margin-bottom:9px}
.rgfx-faq h3::before{content:"Q";margin-right:9px;color:var(--gold);font-weight:800}
.rgfx-faq p{font-size:13.4px;color:var(--mute);line-height:1.78}

.rgfx-safe{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.rgfx-safe article{border:1px solid var(--line);border-radius:var(--r);padding:20px;background:var(--panel)}
.rgfx-safe h3{font-size:14.6px;margin-bottom:8px;color:var(--gold)}
.rgfx-safe p{font-size:13.2px;color:var(--mute);line-height:1.7}

.rgfx-close{position:relative;overflow:hidden;padding:clamp(46px,7vw,82px) 0;background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;text-align:center;border-top:1px solid var(--line)}
.rgfx-close::after{content:"";position:absolute;inset:0;background:rgba(10,12,15,.87)}
.rgfx-close .rgfx-wrap{position:relative;z-index:1}
.rgfx-close h2{font-size:clamp(22px,3.1vw,34px)}
.rgfx-close p{margin:14px auto 0;max-width:600px;font-size:14.4px;color:#c2c9d1;line-height:1.8}
.rgfx-close .rgfx-btns{justify-content:center;margin-top:26px}

.rgfx-footer{background:#080a0d;border-top:1px solid var(--line);padding:clamp(36px,5vw,56px) 0 0}
.rgfx-fgrid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:var(--gap)}
.rgfx-fgrid h4{font-size:13.6px;margin-bottom:14px;letter-spacing:.06em}
.rgfx-fgrid p,.rgfx-fgrid li{font-size:13.2px;color:var(--mute);line-height:1.9}
.rgfx-fgrid a:hover{color:var(--gold)}
.rgfx-fbrand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.rgfx-copy{margin-top:36px;border-top:1px solid var(--line);padding:18px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12.4px;color:#6e767e}

@media(max-width:1024px){
.rgfx-hero-grid{grid-template-columns:1fr;gap:34px}
.rgfx-cards{grid-template-columns:repeat(2,1fr)}
.rgfx-figs,.rgfx-safe{grid-template-columns:repeat(2,1fr)}
.rgfx-cats,.rgfx-trio,.rgfx-entries{grid-template-columns:repeat(2,1fr)}
.rgfx-feature{grid-template-columns:1fr}
.rgfx-feature-side{grid-template-rows:auto;grid-template-columns:1fr 1fr}
.rgfx-fgrid{grid-template-columns:1fr 1fr}
.rgfx-menu a{padding:0 11px;font-size:14px}
}
@media(max-width:768px){
.rgfx-top,.rgfx-duo,.rgfx-vs,.rgfx-trio,.rgfx-faq,.rgfx-feature-side,.rgfx-entries{grid-template-columns:1fr}
.rgfx-h2{font-size:21px}
.rgfx-stack-main b{font-size:16px}
.rgfx-lead{font-size:14.8px}
}
@media(max-width:520px){
.rgfx-wrap{padding:0 16px}
body{font-size:15px}
.rgfx-logo b{font-size:14.4px}
.rgfx-menu a{padding:0 9px;font-size:13.4px}
.rgfx-cards,.rgfx-figs,.rgfx-safe,.rgfx-cats,.rgfx-fgrid{grid-template-columns:1fr}
.rgfx-cards{gap:12px}
.rgfx-card p{font-size:12.6px}
.rgfx-line img{width:94px;min-height:96px}
.rgfx-btns .rgfx-btn{flex:1 1 auto;padding:0 18px}
.rgfx-chips li{font-size:12.2px}
}