/* roulang page: index */
:root{
  --rb-brand:#2563eb;
  --rb-brand-2:#1d4ed8;
  --rb-brand-soft:#eef4ff;
  --rb-ink:#0f172a;
  --rb-ink-2:#334155;
  --rb-muted:#64748b;
  --rb-line:#e4eaf4;
  --rb-bg:#f6f8fc;
  --rb-white:#ffffff;
  --rb-accent:#f43f5e;
  --rb-ok:#0ea56b;
  --rb-warn:#f59e0b;
  --rb-radius-sm:10px;
  --rb-radius:16px;
  --rb-radius-lg:24px;
  --rb-sh-1:0 1px 2px rgba(15,23,42,.05),0 6px 18px rgba(15,23,42,.05);
  --rb-sh-2:0 14px 38px rgba(15,23,42,.10);
  --rb-sh-3:0 26px 60px rgba(15,23,42,.14);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--rb-bg);
  color:var(--rb-ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.35;letter-spacing:-.2px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(37,99,235,.45);outline-offset:2px;border-radius:8px}

.rb-container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ============ HEADER ============ */
.rb-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--rb-line);
}
.rb-brand-row{display:flex;align-items:center;gap:16px;padding:14px 0 8px;flex-wrap:wrap}
.rb-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:.2px;color:var(--rb-ink)}
.rb-brand-mark{
  width:36px;height:36px;border-radius:12px;flex:0 0 auto;
  background:linear-gradient(135deg,#3b82f6,#1d4ed8);
  color:#fff;display:grid;place-items:center;font-size:17px;font-weight:800;
  box-shadow:0 8px 18px rgba(37,99,235,.34);
}
.rb-brand-text{white-space:nowrap}
.rb-head-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.rb-search{
  display:flex;align-items:center;gap:8px;
  background:#f2f6fd;border:1px solid var(--rb-line);
  border-radius:999px;padding:7px 14px;transition:.2s;
}
.rb-search:focus-within{background:#fff;border-color:#bfd3ff;box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.rb-search i{color:var(--rb-muted);font-size:13px}
.rb-search input{border:0;outline:0;background:transparent;width:150px;font-size:14px;color:var(--rb-ink)}
.rb-search input::placeholder{color:#94a3b8}
.rb-nav{display:flex;gap:8px;overflow-x:auto;padding:6px 0 12px;scrollbar-width:none;-ms-overflow-style:none}
.rb-nav::-webkit-scrollbar{display:none}
.rb-chip{
  flex:0 0 auto;padding:7px 17px;border-radius:999px;
  background:#fff;border:1px solid var(--rb-line);color:var(--rb-ink-2);
  font-size:14px;font-weight:600;white-space:nowrap;transition:.22s ease;
}
.rb-chip:hover{border-color:#bfd3ff;color:var(--rb-brand);background:var(--rb-brand-soft);transform:translateY(-1px)}
.rb-chip.is-active{background:var(--rb-brand);border-color:var(--rb-brand);color:#fff;box-shadow:0 8px 18px rgba(37,99,235,.28)}
.rb-chip.is-active:hover{color:#fff}

/* ============ BUTTONS ============ */
.rb-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:999px;cursor:pointer;
  font-weight:700;font-size:15px;padding:12px 26px;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.rb-btn-brand{background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff;box-shadow:0 12px 26px rgba(37,99,235,.30)}
.rb-btn-brand:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(37,99,235,.36);color:#fff}
.rb-btn-brand:active{transform:translateY(0);box-shadow:0 8px 18px rgba(37,99,235,.30)}
.rb-btn-ghost{background:#fff;border-color:var(--rb-line);color:var(--rb-ink-2);box-shadow:var(--rb-sh-1)}
.rb-btn-ghost:hover{border-color:#bfd3ff;color:var(--rb-brand);transform:translateY(-2px);box-shadow:var(--rb-sh-2)}
.rb-btn-white{background:#fff;color:var(--rb-brand);box-shadow:0 12px 26px rgba(15,23,42,.18)}
.rb-btn-white:hover{transform:translateY(-2px);color:var(--rb-brand-2)}
.rb-btn-sm{padding:9px 18px;font-size:14px}
.rb-btn-lg{padding:14px 32px;font-size:16px}
.rb-btn-block{width:100%}

/* ============ HERO ============ */
.rb-hero{
  padding:54px 0 56px;
  background:
    radial-gradient(1100px 460px at 82% -12%,#e2ecff 0%,rgba(246,248,252,0) 62%),
    radial-gradient(760px 380px at 4% 6%,#eaf6f1 0%,rgba(246,248,252,0) 60%),
    var(--rb-bg);
}
.rb-hero-head{max-width:860px;margin-bottom:34px}
.rb-pill{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--rb-line);color:var(--rb-brand);
  font-size:13px;font-weight:700;padding:6px 16px;border-radius:999px;
  box-shadow:var(--rb-sh-1);margin-bottom:18px;
}
.rb-pill .dot{width:7px;height:7px;border-radius:50%;background:var(--rb-ok);box-shadow:0 0 0 4px rgba(14,165,107,.16)}
.rb-hero h1{font-size:clamp(27px,4.2vw,46px);line-height:1.28;margin-bottom:16px}
.rb-hero h1 em{font-style:normal;color:var(--rb-brand);position:relative}
.rb-hero-sub{font-size:16.5px;color:var(--rb-ink-2);max-width:800px}

.rb-compare{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:34px}
.rb-compare-card{
  background:#fff;border-radius:var(--rb-radius-lg);padding:26px 26px 28px;
  border:1px solid var(--rb-line);box-shadow:var(--rb-sh-1);position:relative;transition:.28s ease;
}
.rb-compare-card:hover{transform:translateY(-4px);box-shadow:var(--rb-sh-2)}
.rb-compare-card.is-before{background:#fbfcfe;border-color:#e8edf6}
.rb-compare-card.is-after{border-color:#c9dcff;box-shadow:0 18px 44px rgba(37,99,235,.14)}
.rb-compare-tag{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;font-weight:800;padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.is-before .rb-compare-tag{background:#f1f5fb;color:#64748b}
.is-after .rb-compare-tag{background:var(--rb-brand-soft);color:var(--rb-brand)}
.rb-checklist li{
  display:flex;gap:11px;align-items:flex-start;
  padding:9px 0;font-size:14.8px;color:var(--rb-ink-2);border-bottom:1px dashed #edf1f8;
}
.rb-checklist li:last-child{border-bottom:0;padding-bottom:0}
.rb-checklist i{margin-top:5px;font-size:13px;flex:0 0 auto}
.is-before .rb-checklist i{color:#b6c2d4}
.is-after .rb-checklist i{color:var(--rb-ok)}
.rb-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.rb-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:34px;
}
.rb-stat{
  background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
  padding:18px 20px;box-shadow:var(--rb-sh-1);transition:.25s ease;
}
.rb-stat:hover{transform:translateY(-3px);box-shadow:var(--rb-sh-2);border-color:#d7e3fb}
.rb-stat b{display:block;font-size:24px;line-height:1.2;color:var(--rb-brand);font-weight:800}
.rb-stat span{font-size:13px;color:var(--rb-muted)}

/* ============ SECTION ============ */
.rb-section{padding:60px 0;scroll-margin-top:120px}
.rb-section.rb-alt{background:#fff;border-top:1px solid var(--rb-line);border-bottom:1px solid var(--rb-line)}
.rb-section-head{max-width:780px;margin-bottom:32px}
.rb-section-head.rb-center{margin-left:auto;margin-right:auto;text-align:center}
.rb-eyebrow{
  display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:2.4px;
  color:var(--rb-brand);text-transform:uppercase;margin-bottom:10px;
}
.rb-section-head h2{font-size:clamp(22px,3vw,31px);margin-bottom:12px}
.rb-section-head p{color:var(--rb-muted);font-size:15.5px}

/* ============ GRIDS / TILES ============ */
.rb-grid{display:grid;gap:20px}
.rb-g2{grid-template-columns:repeat(2,1fr)}
.rb-g3{grid-template-columns:repeat(3,1fr)}
.rb-g4{grid-template-columns:repeat(4,1fr)}

.rb-tile{
  background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
  padding:26px;box-shadow:var(--rb-sh-1);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
  height:100%;display:flex;flex-direction:column;
}
.rb-tile:hover{transform:translateY(-5px);box-shadow:var(--rb-sh-2);border-color:#d7e3fb}
.rb-tile-ico{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:var(--rb-brand-soft);color:var(--rb-brand);font-size:18px;margin-bottom:16px;
}
.rb-tile h3{font-size:17.5px;margin-bottom:9px}
.rb-tile p{color:var(--rb-muted);font-size:14.6px;line-height:1.72}
.rb-tile .rb-tile-foot{margin-top:auto;padding-top:14px}

.rb-tile.rb-hot{background:linear-gradient(160deg,#ffffff 0%,#f5f9ff 100%);border-color:#cbddfd}
.rb-tile.rb-hot .rb-tile-ico{background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff;box-shadow:0 10px 22px rgba(37,99,235,.28)}

.rb-badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;padding:4px 11px;border-radius:999px;
  background:var(--rb-brand-soft);color:var(--rb-brand);
}
.rb-badge.rb-badge-ok{background:#e9f8f1;color:var(--rb-ok)}
.rb-badge.rb-badge-warn{background:#fff4e2;color:#b45309}
.rb-badge.rb-badge-mute{background:#f1f5fb;color:#64748b}

/* ============ METRIC BAR ============ */
.rb-metric-band{
  background:linear-gradient(135deg,#1e40af,#2563eb 55%,#3b82f6);
  border-radius:var(--rb-radius-lg);padding:38px 34px;color:#fff;
  box-shadow:var(--rb-sh-3);
}
.rb-metric-band h2{font-size:clamp(20px,2.6vw,26px);margin-bottom:10px}
.rb-metric-band > p{color:rgba(255,255,255,.82);font-size:15px;max-width:760px}
.rb-metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:28px}
.rb-metric{
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  border-radius:var(--rb-radius);padding:18px 20px;transition:.25s ease;
}
.rb-metric:hover{background:rgba(255,255,255,.2);transform:translateY(-3px)}
.rb-metric b{display:block;font-size:25px;font-weight:800;line-height:1.2}
.rb-metric span{font-size:13px;color:rgba(255,255,255,.8)}

/* ============ PROGRESS / ROADMAP ============ */
.rb-progress{height:8px;border-radius:999px;background:#eef2fa;overflow:hidden;margin-top:14px}
.rb-progress > span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#2563eb,#60a5fa);transition:width .6s ease}
.rb-progress.rb-warn > span{background:linear-gradient(90deg,#f59e0b,#fbbf24)}
.rb-progress.rb-ok > span{background:linear-gradient(90deg,#0ea56b,#34d399)}
.rb-progress-row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.rb-progress-row b{font-size:15px;font-weight:700}
.rb-progress-row span{font-size:13px;color:var(--rb-muted);font-weight:700}

/* ============ CHANGELOG ============ */
.rb-log{position:relative;padding-left:30px}
.rb-log::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,#bfd3ff,#e4eaf4)}
.rb-log-item{position:relative;padding:0 0 26px}
.rb-log-item:last-child{padding-bottom:0}
.rb-log-item::before{
  content:"";position:absolute;left:-30px;top:6px;width:18px;height:18px;border-radius:50%;
  background:#fff;border:3px solid var(--rb-brand);box-shadow:0 0 0 5px rgba(37,99,235,.10);
}
.rb-log-item h3{font-size:16px;margin-bottom:6px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.rb-log-item p{color:var(--rb-muted);font-size:14.6px}

/* ============ CHANNEL WALL ============ */
.rb-channel{
  display:block;background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius-lg);
  padding:28px;box-shadow:var(--rb-sh-1);transition:.28s ease;height:100%;
}
.rb-channel:hover{transform:translateY(-5px);box-shadow:var(--rb-sh-2);border-color:#c9dcff}
.rb-channel-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.rb-channel-no{font-size:32px;font-weight:800;color:#e2eaf8;line-height:1}
.rb-channel h3{font-size:18px;margin-bottom:9px;color:var(--rb-ink)}
.rb-channel p{color:var(--rb-muted);font-size:14.6px}
.rb-channel .rb-more{display:inline-flex;align-items:center;gap:7px;margin-top:16px;font-size:14px;font-weight:700;color:var(--rb-brand)}
.rb-channel:hover .rb-more i{transform:translateX(4px)}
.rb-more i{transition:transform .22s ease}

/* ============ SCENE MATRIX ============ */
.rb-scene{
  background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
  padding:22px 22px 24px;box-shadow:var(--rb-sh-1);transition:.25s ease;height:100%;
}
.rb-scene:hover{transform:translateY(-4px);box-shadow:var(--rb-sh-2);border-color:#d7e3fb}
.rb-scene h3{font-size:16px;margin:12px 0 8px}
.rb-scene p{color:var(--rb-muted);font-size:14.4px}

/* ============ RANK ============ */
.rb-rank-list{background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius-lg);padding:10px 26px;box-shadow:var(--rb-sh-1)}
.rb-rank-item{display:flex;align-items:center;gap:18px;padding:18px 0;border-bottom:1px solid #f1f4fa;transition:.22s ease}
.rb-rank-item:last-child{border-bottom:0}
.rb-rank-item:hover{background:#fafcff}
.rb-rank-no{
  width:34px;height:34px;flex:0 0 auto;border-radius:11px;display:grid;place-items:center;
  font-weight:800;font-size:15px;background:#f1f5fb;color:#7c8ba1;
}
.rb-rank-item:nth-child(1) .rb-rank-no{background:linear-gradient(135deg,#f59e0b,#fbbf24);color:#fff}
.rb-rank-item:nth-child(2) .rb-rank-no{background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff}
.rb-rank-item:nth-child(3) .rb-rank-no{background:linear-gradient(135deg,#0ea56b,#34d399);color:#fff}
.rb-rank-main{flex:1 1 auto;min-width:0}
.rb-rank-main h3{font-size:15.6px;margin-bottom:7px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rb-rank-bar{height:6px;border-radius:999px;background:#f1f4fa;overflow:hidden}
.rb-rank-bar > span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#60a5fa,#2563eb)}
.rb-rank-val{flex:0 0 auto;font-size:13.5px;font-weight:700;color:var(--rb-brand)}

/* ============ QUOTES ============ */
.rb-quote{
  background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
  padding:26px;box-shadow:var(--rb-sh-1);height:100%;display:flex;flex-direction:column;transition:.25s ease;
}
.rb-quote:hover{transform:translateY(-4px);box-shadow:var(--rb-sh-2);border-color:#d7e3fb}
.rb-quote .stars{color:#f59e0b;font-size:13px;margin-bottom:12px;letter-spacing:2px}
.rb-quote p{color:var(--rb-ink-2);font-size:14.8px}
.rb-quote-who{display:flex;align-items:center;gap:11px;margin-top:auto;padding-top:18px}
.rb-avatar{
  width:38px;height:38px;border-radius:50%;flex:0 0 auto;display:grid;place-items:center;
  background:var(--rb-brand-soft);color:var(--rb-brand);font-weight:800;font-size:14px;
}
.rb-quote-who b{display:block;font-size:14px}
.rb-quote-who span{font-size:12.5px;color:var(--rb-muted)}

/* ============ GUARANTEE ============ */
.rb-guarantee-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.rb-guarantee{
  display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--rb-line);
  border-radius:var(--rb-radius);padding:20px;box-shadow:var(--rb-sh-1);transition:.25s ease;
}
.rb-guarantee:hover{border-color:#c9dcff;transform:translateY(-3px);box-shadow:var(--rb-sh-2)}
.rb-guarantee i{font-size:18px;color:var(--rb-brand);margin-top:3px}
.rb-guarantee b{display:block;font-size:15px;margin-bottom:5px}
.rb-guarantee span{font-size:13.6px;color:var(--rb-muted);line-height:1.7}

/* ============ NEWS ============ */
.rb-news{display:flex;flex-direction:column;gap:14px}
.rb-news-item{
  display:flex;gap:20px;align-items:center;background:#fff;border:1px solid var(--rb-line);
  border-radius:var(--rb-radius);padding:20px 24px;box-shadow:var(--rb-sh-1);transition:.25s ease;
}
.rb-news-item:hover{transform:translateX(4px);border-color:#c9dcff;box-shadow:var(--rb-sh-2)}
.rb-news-date{
  flex:0 0 auto;width:62px;text-align:center;border-right:1px solid #eef2f9;padding-right:18px;
}
.rb-news-date b{display:block;font-size:19px;color:var(--rb-brand);line-height:1.2}
.rb-news-date span{font-size:12px;color:var(--rb-muted)}
.rb-news-body h3{font-size:16px;margin-bottom:6px}
.rb-news-body p{font-size:14.3px;color:var(--rb-muted)}

/* ============ SUBSCRIBE ============ */
.rb-sub-wrap{
  background:linear-gradient(140deg,#0f2a6b 0%,#1d4ed8 55%,#3b82f6 100%);
  border-radius:var(--rb-radius-lg);padding:52px 44px;color:#fff;
  box-shadow:var(--rb-sh-3);position:relative;overflow:hidden;
}
.rb-sub-wrap::after{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),rgba(255,255,255,0) 70%);
}
.rb-sub-inner{position:relative;z-index:2;max-width:720px}
.rb-sub-wrap h2{font-size:clamp(22px,3vw,32px);margin-bottom:14px}
.rb-sub-wrap p{color:rgba(255,255,255,.86);font-size:15.4px}
.rb-sub-form{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap}
.rb-sub-form input{
  flex:1 1 260px;min-width:0;border:1px solid rgba(255,255,255,.35);
  background:rgba(255,255,255,.14);color:#fff;border-radius:999px;
  padding:13px 22px;font-size:15px;outline:0;transition:.22s ease;
}
.rb-sub-form input::placeholder{color:rgba(255,255,255,.7)}
.rb-sub-form input:focus{background:rgba(255,255,255,.22);border-color:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.16)}
.rb-sub-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.72)}

/* ============ FOOTER ============ */
.rb-footer{background:#0b1729;color:#cbd5e1;padding:56px 0 26px;margin-top:20px}
.rb-footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.rb-footer .rb-brand{color:#fff;margin-bottom:16px}
.rb-footer-about{font-size:14px;color:#94a3b8;line-height:1.8;max-width:330px}
.rb-footer h4{font-size:14.5px;color:#fff;margin-bottom:16px;letter-spacing:.4px}
.rb-footer li{font-size:14px;color:#94a3b8;padding:5px 0}
.rb-footer li a{transition:.2s ease}
.rb-footer li a:hover{color:#fff}
.rb-footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#7b8ca4;
}

/* ============ RESPONSIVE ============ */
@media (max-width:1024px){
  .rb-g4{grid-template-columns:repeat(2,1fr)}
  .rb-metric-grid{grid-template-columns:repeat(2,1fr)}
  .rb-guarantee-grid{grid-template-columns:repeat(2,1fr)}
  .rb-stats{grid-template-columns:repeat(2,1fr)}
  .rb-footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .rb-hero{padding:38px 0 42px}
  .rb-section{padding:46px 0}
  .rb-compare{grid-template-columns:1fr}
  .rb-g3{grid-template-columns:1fr}
  .rb-g2{grid-template-columns:1fr}
  .rb-head-tools{width:100%;margin-left:0}
  .rb-search{flex:1 1 auto}
  .rb-search input{width:100%}
  .rb-metric-band{padding:30px 22px}
  .rb-sub-wrap{padding:38px 24px}
  .rb-rank-list{padding:8px 18px}
  .rb-news-item{flex-direction:column;align-items:flex-start;gap:12px}
  .rb-news-date{width:auto;border-right:0;border-bottom:1px solid #eef2f9;padding:0 0 10px;text-align:left}
}
@media (max-width:520px){
  .rb-container{padding:0 16px}
  .rb-g4{grid-template-columns:1fr}
  .rb-metric-grid{grid-template-columns:1fr}
  .rb-guarantee-grid{grid-template-columns:1fr}
  .rb-stats{grid-template-columns:1fr 1fr;gap:12px}
  .rb-stat{padding:14px 16px}
  .rb-stat b{font-size:20px}
  .rb-btn{padding:11px 20px;font-size:14.5px}
  .rb-hero-actions .rb-btn{flex:1 1 100%}
  .rb-footer-grid{grid-template-columns:1fr}
  .rb-brand-text{font-size:17px}
  .rb-rank-item{gap:12px}
  .rb-rank-val{display:none}
}

/* roulang page: category2 */
:root{
  --rb-brand:#2563eb;
  --rb-brand-2:#1d4ed8;
  --rb-brand-soft:#eef4ff;
  --rb-ink:#0f172a;
  --rb-ink-2:#334155;
  --rb-muted:#64748b;
  --rb-line:#e4eaf4;
  --rb-bg:#f6f8fc;
  --rb-white:#ffffff;
  --rb-accent:#f43f5e;
  --rb-ok:#0ea56b;
  --rb-warn:#f59e0b;
  --rb-radius-sm:10px;
  --rb-radius:16px;
  --rb-radius-lg:24px;
  --rb-sh-1:0 1px 2px rgba(15,23,42,.05),0 6px 18px rgba(15,23,42,.05);
  --rb-sh-2:0 14px 38px rgba(15,23,42,.10);
  --rb-sh-3:0 26px 60px rgba(15,23,42,.14);
}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--rb-bg);
  color:var(--rb-ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
*{box-sizing:border-box}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,.rb-chip:focus-visible{
  outline:3px solid rgba(37,99,235,.35);outline-offset:2px;border-radius:8px;
}
.rb-container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ============ HEADER ============ */
.rb-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--rb-line);
}
.rb-brand-row{display:flex;align-items:center;gap:16px;padding:14px 0 8px;flex-wrap:wrap}
.rb-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:.2px;color:var(--rb-ink)}
.rb-brand-mark{
  width:36px;height:36px;border-radius:12px;flex:0 0 auto;
  background:linear-gradient(135deg,#3b82f6,#1d4ed8);
  color:#fff;display:grid;place-items:center;font-size:17px;font-weight:800;
  box-shadow:0 8px 18px rgba(37,99,235,.34);
}
.rb-brand-text{white-space:nowrap}
.rb-head-tools{display:flex;align-items:center;gap:12px;margin-left:auto;flex-wrap:wrap}
.rb-search{
  display:flex;align-items:center;gap:8px;
  background:#f2f6fd;border:1px solid var(--rb-line);
  border-radius:999px;padding:7px 14px;transition:.2s;
}
.rb-search:focus-within{background:#fff;border-color:#bfd3ff;box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.rb-search i{color:var(--rb-muted);font-size:13px}
.rb-search input{border:0;outline:0;background:transparent;width:150px;font-size:14px;color:var(--rb-ink)}
.rb-search input::placeholder{color:#94a3b8}
.rb-nav{display:flex;gap:8px;overflow-x:auto;padding:6px 0 12px;scrollbar-width:none;-ms-overflow-style:none}
.rb-nav::-webkit-scrollbar{display:none}
.rb-chip{
  flex:0 0 auto;padding:7px 17px;border-radius:999px;
  background:#fff;border:1px solid var(--rb-line);color:var(--rb-ink-2);
  font-size:14px;font-weight:600;white-space:nowrap;transition:.22s ease;
}
.rb-chip:hover{border-color:#bfd3ff;color:var(--rb-brand);background:var(--rb-brand-soft);transform:translateY(-1px)}
.rb-chip.is-active{background:var(--rb-brand);border-color:var(--rb-brand);color:#fff;box-shadow:0 8px 18px rgba(37,99,235,.28)}
.rb-chip.is-active:hover{color:#fff}

/* ============ BUTTONS ============ */
.rb-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:999px;cursor:pointer;
  font-weight:700;font-size:15px;padding:12px 26px;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.rb-btn-brand{background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff;box-shadow:0 12px 26px rgba(37,99,235,.30)}
.rb-btn-brand:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(37,99,235,.36);color:#fff}
.rb-btn-brand:active{transform:translateY(0);box-shadow:0 8px 18px rgba(37,99,235,.30)}
.rb-btn-ghost{background:#fff;border-color:var(--rb-line);color:var(--rb-ink-2);box-shadow:var(--rb-sh-1)}
.rb-btn-ghost:hover{border-color:#bfd3ff;color:var(--rb-brand);transform:translateY(-2px);box-shadow:var(--rb-sh-2)}
.rb-btn-white{background:#fff;color:var(--rb-brand);box-shadow:0 12px 26px rgba(15,23,42,.18)}
.rb-btn-white:hover{transform:translateY(-2px);color:var(--rb-brand-2)}
.rb-btn-sm{padding:9px 18px;font-size:14px}
.rb-btn-lg{padding:14px 32px;font-size:16px}
.rb-btn-block{width:100%}

/* ============ HERO ============ */
.rb-hero{
  padding:50px 0 54px;
  background:
    radial-gradient(1100px 460px at 84% -14%,#e2ecff 0%,rgba(246,248,252,0) 62%),
    radial-gradient(760px 380px at 2% 8%,#eaf6f1 0%,rgba(246,248,252,0) 60%),
    var(--rb-bg);
  border-bottom:1px solid var(--rb-line);
}
.rb-pill{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--rb-line);color:var(--rb-brand);
  font-size:13px;font-weight:700;padding:6px 16px;border-radius:999px;
  box-shadow:var(--rb-sh-1);margin-bottom:18px;
}
.rb-pill .dot{width:7px;height:7px;border-radius:50%;background:var(--rb-ok);box-shadow:0 0 0 4px rgba(14,165,107,.16)}
.rb-hero h1{font-size:clamp(26px,4vw,44px);line-height:1.3;margin:0 0 16px;font-weight:800;letter-spacing:-.3px}
.rb-hero h1 em{font-style:normal;color:var(--rb-brand)}
.rb-hero-sub{font-size:16.5px;color:var(--rb-ink-2);max-width:640px;margin:0}
.rb-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.rb-hero-note{display:flex;gap:18px;flex-wrap:wrap;margin-top:24px;font-size:13.5px;color:var(--rb-muted)}
.rb-hero-note span{display:inline-flex;align-items:center;gap:7px}
.rb-hero-note i{color:var(--rb-brand)}

/* 邀请 / 进度面板 */
.rb-panel{
  background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius-lg);
  padding:24px;box-shadow:var(--rb-sh-2);
}
.rb-panel-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:6px}
.rb-panel-title{font-size:18px;font-weight:800;margin:0}
.rb-badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;
  padding:4px 12px;border-radius:999px;background:var(--rb-brand-soft);color:var(--rb-brand);
}
.rb-badge-ok{background:#e8f7f0;color:var(--rb-ok)}
.rb-badge-warn{background:#fff5e6;color:#b45309}
.rb-panel p{margin:8px 0 0;color:var(--rb-muted);font-size:14px}
.rb-progress-wrap{margin:18px 0 6px}
.rb-progress-top{display:flex;justify-content:space-between;font-size:13.5px;font-weight:700;color:var(--rb-ink-2);margin-bottom:8px}
.rb-progress-top b{color:var(--rb-brand)}
.rb-bar{height:11px;border-radius:999px;background:#e9eff9;overflow:hidden}
.rb-bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#60a5fa,#1d4ed8)}
.rb-reward{list-style:none;margin:18px 0 0;padding:0;border-top:1px dashed #e9eff8;padding-top:14px}
.rb-reward li{display:flex;gap:11px;align-items:flex-start;padding:7px 0;font-size:14.2px;color:var(--rb-ink-2)}
.rb-reward i{
  width:22px;height:22px;border-radius:8px;flex:0 0 auto;margin-top:4px;
  display:grid;place-items:center;font-size:11px;
  background:var(--rb-brand-soft);color:var(--rb-brand);
}
.rb-reward li b{color:var(--rb-ink)}
.rb-panel-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.rb-toast{
  margin-top:12px;font-size:13px;color:var(--rb-ok);display:none;align-items:center;gap:7px;
}
.rb-toast.is-on{display:flex}

/* ============ SECTION ============ */
.rb-section{padding:56px 0;scroll-margin-top:130px}
.rb-section.rb-alt{background:#fff;border-top:1px solid var(--rb-line);border-bottom:1px solid var(--rb-line)}
.rb-section-head{max-width:760px;margin-bottom:30px}
.rb-section-head.rb-center{margin-left:auto;margin-right:auto;text-align:center}
.rb-eyebrow{
  display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:1.4px;
  color:var(--rb-brand);text-transform:uppercase;margin-bottom:10px;
}
.rb-section-head h2{font-size:clamp(21px,2.6vw,30px);font-weight:800;margin:0 0 12px;letter-spacing:-.2px}
.rb-section-head p{margin:0;color:var(--rb-muted);font-size:15.5px}

/* 数据条 */
.rb-stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--rb-line);border:1px solid var(--rb-line);
  border-radius:var(--rb-radius);overflow:hidden;box-shadow:var(--rb-sh-1);
}
.rb-stat{background:#fff;padding:22px 20px;transition:.24s ease}
.rb-stat:hover{background:#f8fbff}
.rb-stat-num{font-size:28px;font-weight:800;color:var(--rb-brand);line-height:1.2;letter-spacing:-.5px}
.rb-stat-num small{font-size:14px;font-weight:700;color:var(--rb-muted);margin-left:4px}
.rb-stat-label{font-size:13.5px;color:var(--rb-muted);margin-top:6px}

/* 频道矩阵 */
.rb-channel{
  display:flex;flex-direction:column;height:100%;
  background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
  padding:22px;box-shadow:var(--rb-sh-1);transition:.26s ease;
}
.rb-channel:hover{transform:translateY(-4px);box-shadow:var(--rb-sh-2);border-color:#c9dcff}
.rb-channel-ico{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:var(--rb-brand-soft);color:var(--rb-brand);font-size:18px;margin-bottom:14px;
}
.rb-channel h3{font-size:17.5px;font-weight:800;margin:0 0 8px}
.rb-channel p{margin:0 0 16px;color:var(--rb-muted);font-size:14.3px;flex:1}
.rb-channel-link{font-size:14px;font-weight:700;color:var(--rb-brand);display:inline-flex;align-items:center;gap:7px}
.rb-channel-link i{font-size:12px;transition:transform .2s ease}
.rb-channel:hover .rb-channel-link i{transform:translateX(4px)}
.rb-channel.is-current{border-color:#c9dcff;background:linear-gradient(180deg,#f7faff,#fff)}

/* 时段表 */
.rb-slot{
  display:grid;grid-template-columns:132px 1fr auto;gap:18px;align-items:center;
  background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
  padding:18px 22px;box-shadow:var(--rb-sh-1);margin-bottom:12px;transition:.24s ease;
}
.rb-slot:hover{border-color:#c9dcff;box-shadow:var(--rb-sh-2);transform:translateX(2px)}
.rb-slot-time{font-weight:800;color:var(--rb-ink);font-size:15.5px;display:flex;align-items:center;gap:9px}
.rb-slot-time i{color:var(--rb-brand);font-size:14px}
.rb-slot-text strong{display:block;font-size:15.5px;margin-bottom:3px}
.rb-slot-text span{font-size:14px;color:var(--rb-muted)}
.rb-slot-count{
  font-size:13.5px;font-weight:800;color:var(--rb-brand);
  background:var(--rb-brand-soft);border-radius:999px;padding:6px 15px;white-space:nowrap;
}

/* 排行 */
.rb-rank{
  background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
  overflow:hidden;box-shadow:var(--rb-sh-1);
}
.rb-rank-head,.rb-rank-row{
  display:grid;grid-template-columns:70px minmax(0,1fr) 110px 118px 96px;
  gap:14px;align-items:center;padding:14px 22px;
}
.rb-rank-head{
  background:#f7faff;border-bottom:1px solid var(--rb-line);
  font-size:12.5px;font-weight:800;letter-spacing:1px;color:var(--rb-muted);text-transform:uppercase;
}
.rb-rank-row{border-bottom:1px solid #f1f5fb;transition:.2s ease}
.rb-rank-row:last-child{border-bottom:0}
.rb-rank-row:hover{background:#f8fbff}
.rb-rank-no{
  font-weight:800;font-size:15px;color:var(--rb-muted);
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9px;background:#f2f6fd;
}
.rb-rank-row.is-top .rb-rank-no{background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff}
.rb-rank-name{font-weight:700;font-size:15.2px;display:flex;align-items:center;gap:9px;min-width:0}
.rb-rank-name span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rb-tag{
  display:inline-flex;align-items:center;font-size:12px;font-weight:700;
  padding:2px 10px;border-radius:999px;background:#f1f5fb;color:var(--rb-muted);white-space:nowrap;
}
.rb-tag-hot{background:#ffeef1;color:#d92d4b}
.rb-tag-new{background:#e8f7f0;color:var(--rb-ok)}
.rb-rank-cell{font-size:14px;color:var(--rb-ink-2);font-variant-numeric:tabular-nums}
.rb-rank-hot{font-weight:800;color:var(--rb-brand);font-variant-numeric:tabular-nums}

/* 标签索引 */
.rb-tagcloud{display:flex;flex-wrap:wrap;gap:10px}
.rb-tagcloud a{
  padding:9px 18px;border-radius:999px;background:#fff;border:1px solid var(--rb-line);
  font-size:14px;font-weight:600;color:var(--rb-ink-2);transition:.22s ease;
}
.rb-tagcloud a:hover{border-color:#bfd3ff;color:var(--rb-brand);background:var(--rb-brand-soft);transform:translateY(-2px)}
.rb-tagcloud a.is-on{background:var(--rb-brand);border-color:var(--rb-brand);color:#fff}

/* 时间线 */
.rb-tl{position:relative;padding-left:30px;margin:0}
.rb-tl::before{content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,#c9dcff,#eef4ff)}
.rb-tl-item{position:relative;padding-bottom:24px}
.rb-tl-item:last-child{padding-bottom:0}
.rb-tl-item::before{
  content:"";position:absolute;left:-29px;top:7px;width:13px;height:13px;border-radius:50%;
  background:#fff;border:3px solid var(--rb-brand);
}
.rb-tl-time{font-size:13px;font-weight:800;color:var(--rb-brand);letter-spacing:.4px}
.rb-tl-item h4{font-size:16px;font-weight:800;margin:4px 0 4px}
.rb-tl-item p{margin:0;font-size:14.3px;color:var(--rb-muted)}

/* 精选合集卡 */
.rb-collection{
  height:100%;background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
  padding:22px;box-shadow:var(--rb-sh-1);transition:.26s ease;display:flex;flex-direction:column;
}
.rb-collection:hover{transform:translateY(-4px);box-shadow:var(--rb-sh-2);border-color:#c9dcff}
.rb-collection-top{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px}
.rb-collection h3{font-size:17px;font-weight:800;margin:0 0 8px}
.rb-collection p{margin:0 0 16px;font-size:14.3px;color:var(--rb-muted);flex:1}
.rb-collection-meta{display:flex;gap:16px;font-size:13px;color:var(--rb-muted);border-top:1px dashed #e9eff8;padding-top:12px}
.rb-collection-meta b{color:var(--rb-ink);font-weight:800}

/* FAQ */
.rb-faq{display:flex;flex-direction:column;gap:12px}
.rb-faq details{
  background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
  padding:18px 22px;box-shadow:var(--rb-sh-1);transition:.24s ease;
}
.rb-faq details[open]{border-color:#c9dcff;box-shadow:var(--rb-sh-2)}
.rb-faq summary{
  list-style:none;cursor:pointer;font-weight:800;font-size:15.6px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.rb-faq summary::-webkit-details-marker{display:none}
.rb-faq summary i{color:var(--rb-brand);font-size:13px;transition:transform .24s ease}
.rb-faq details[open] summary i{transform:rotate(45deg)}
.rb-faq p{margin:12px 0 0;color:var(--rb-muted);font-size:14.5px}

/* CTA */
.rb-cta{
  background:linear-gradient(135deg,#1e3a8a,#2563eb 58%,#3b82f6);
  border-radius:var(--rb-radius-lg);padding:44px 40px;color:#fff;
  box-shadow:var(--rb-sh-3);position:relative;overflow:hidden;
}
.rb-cta::after{
  content:"";position:absolute;right:-70px;top:-70px;width:260px;height:260px;border-radius:50%;
  background:rgba(255,255,255,.10);
}
.rb-cta h2{font-size:clamp(21px,2.6vw,29px);font-weight:800;margin:0 0 12px;position:relative}
.rb-cta p{margin:0 0 24px;color:rgba(255,255,255,.86);font-size:15.5px;max-width:660px;position:relative}
.rb-cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative}
.rb-cta-facts{display:flex;gap:26px;flex-wrap:wrap;margin-top:26px;position:relative}
.rb-cta-facts div{font-size:13.5px;color:rgba(255,255,255,.86)}
.rb-cta-facts b{display:block;font-size:21px;color:#fff;font-weight:800}

/* ============ FOOTER ============ */
.rb-footer{background:#0b1220;color:#c7d2e4;padding:54px 0 24px;margin-top:0}
.rb-footer .rb-brand{color:#fff}
.rb-footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:34px}
.rb-footer-about{margin:14px 0 0;font-size:14px;color:#93a3ba;max-width:360px}
.rb-footer h4{color:#fff;font-size:15px;font-weight:800;margin:0 0 14px}
.rb-footer ul{list-style:none;margin:0;padding:0}
.rb-footer li{font-size:14px;color:#93a3ba;padding:5px 0}
.rb-footer li a{color:#93a3ba;transition:.2s}
.rb-footer li a:hover{color:#fff}
.rb-footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13.5px;color:#7f8fa6;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .rb-stat-strip{grid-template-columns:repeat(2,1fr)}
  .rb-footer-grid{grid-template-columns:1fr 1fr}
  .rb-rank-head,.rb-rank-row{grid-template-columns:58px minmax(0,1fr) 96px 100px 86px;gap:10px;padding:13px 18px}
  .rb-cta{padding:36px 28px}
}
@media (max-width:768px){
  body{font-size:15.5px}
  .rb-brand-row{padding:12px 0 6px}
  .rb-head-tools{width:100%;margin-left:0}
  .rb-search{flex:1}
  .rb-search input{width:100%}
  .rb-hero{padding:36px 0 40px}
  .rb-section{padding:44px 0}
  .rb-slot{grid-template-columns:1fr;gap:10px;align-items:flex-start}
  .rb-slot-count{justify-self:flex-start}
  .rb-rank-head{display:none}
  .rb-rank-row{grid-template-columns:44px minmax(0,1fr) auto;gap:10px;padding:14px 16px}
  .rb-rank-time{display:none}
  .rb-rank-cell.rb-rank-tag{grid-column:2;font-size:12.5px}
  .rb-cta-facts{gap:18px}
}
@media (max-width:520px){
  .rb-container{padding:0 16px}
  .rb-stat-strip{grid-template-columns:1fr}
  .rb-hero h1{font-size:25px}
  .rb-hero-actions .rb-btn{width:100%}
  .rb-panel{padding:20px}
  .rb-panel-actions .rb-btn{width:100%}
  .rb-footer-grid{grid-template-columns:1fr;gap:26px}
  .rb-footer{padding:40px 0 20px}
  .rb-cta{padding:28px 20px;border-radius:var(--rb-radius)}
  .rb-cta-actions .rb-btn{width:100%}
  .rb-tagcloud a{padding:8px 14px;font-size:13.5px}
}

/* roulang page: category1 */
:root{
 --rb-brand:#2563eb;
 --rb-brand-2:#1d4ed8;
 --rb-brand-soft:#eef4ff;
 --rb-ink:#0f172a;
 --rb-ink-2:#334155;
 --rb-muted:#64748b;
 --rb-line:#e4eaf4;
 --rb-bg:#f6f8fc;
 --rb-white:#ffffff;
 --rb-accent:#f43f5e;
 --rb-accent-2:#e11d48;
 --rb-ok:#0ea56b;
 --rb-warn:#f59e0b;
 --rb-radius-sm:10px;
 --rb-radius:16px;
 --rb-radius-lg:24px;
 --rb-sh-1:0 1px 2px rgba(15,23,42,.05),0 6px 18px rgba(15,23,42,.05);
 --rb-sh-2:0 14px 38px rgba(15,23,42,.10);
 --rb-sh-3:0 26px 60px rgba(15,23,42,.14);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
 background:var(--rb-bg);
 color:var(--rb-ink);
 font-size:16px;
 line-height:1.75;
 -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit}
h1,h2,h3,h4{margin:0;line-height:1.35}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(37,99,235,.45);outline-offset:2px;border-radius:6px}
.rb-container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ============ HEADER ============ */
.rb-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.94);
 backdrop-filter:blur(14px);
 -webkit-backdrop-filter:blur(14px);
 border-bottom:1px solid var(--rb-line);
}
.rb-brand-row{display:flex;align-items:center;gap:16px;padding:14px 0 8px;flex-wrap:wrap}
.rb-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:.2px;color:var(--rb-ink)}
.rb-brand-mark{
 width:36px;height:36px;border-radius:12px;flex:0 0 auto;
 background:linear-gradient(135deg,#3b82f6,#1d4ed8);
 color:#fff;display:grid;place-items:center;font-size:17px;font-weight:800;
 box-shadow:0 8px 18px rgba(37,99,235,.34);
}
.rb-brand-text{white-space:nowrap}
.rb-head-tools{display:flex;align-items:center;gap:12px;margin-left:auto;flex-wrap:wrap}
.rb-search{
 display:flex;align-items:center;gap:8px;
 background:#f2f6fd;border:1px solid var(--rb-line);
 border-radius:999px;padding:7px 14px;transition:.2s;
}
.rb-search:focus-within{background:#fff;border-color:#bfd3ff;box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.rb-search i{color:var(--rb-muted);font-size:13px}
.rb-search input{border:0;outline:0;background:transparent;width:150px;font-size:14px;color:var(--rb-ink)}
.rb-search input::placeholder{color:#94a3b8}
.rb-nav{display:flex;gap:8px;overflow-x:auto;padding:6px 0 12px;scrollbar-width:none;-ms-overflow-style:none}
.rb-nav::-webkit-scrollbar{display:none}
.rb-chip{
 flex:0 0 auto;padding:7px 17px;border-radius:999px;
 background:#fff;border:1px solid var(--rb-line);color:var(--rb-ink-2);
 font-size:14px;font-weight:600;white-space:nowrap;transition:.22s ease;
}
.rb-chip:hover{border-color:#bfd3ff;color:var(--rb-brand);background:var(--rb-brand-soft);transform:translateY(-1px)}
.rb-chip.is-active{background:var(--rb-brand);border-color:var(--rb-brand);color:#fff;box-shadow:0 8px 18px rgba(37,99,235,.28)}
.rb-chip.is-active:hover{color:#fff}

/* ============ BUTTONS ============ */
.rb-btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 border:1px solid transparent;border-radius:999px;cursor:pointer;
 font-weight:700;font-size:15px;padding:12px 26px;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.rb-btn-brand{background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff;box-shadow:0 12px 26px rgba(37,99,235,.30)}
.rb-btn-brand:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(37,99,235,.36);color:#fff}
.rb-btn-brand:active{transform:translateY(0);box-shadow:0 8px 18px rgba(37,99,235,.30)}
.rb-btn-ghost{background:#fff;border-color:var(--rb-line);color:var(--rb-ink-2);box-shadow:var(--rb-sh-1)}
.rb-btn-ghost:hover{border-color:#bfd3ff;color:var(--rb-brand);transform:translateY(-2px);box-shadow:var(--rb-sh-2)}
.rb-btn-white{background:#fff;color:var(--rb-brand);box-shadow:0 12px 26px rgba(15,23,42,.18)}
.rb-btn-white:hover{transform:translateY(-2px);color:var(--rb-brand-2)}
.rb-btn-accent{background:linear-gradient(135deg,#fb7185,#e11d48);color:#fff;box-shadow:0 12px 26px rgba(225,29,72,.32)}
.rb-btn-accent:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(225,29,72,.4);color:#fff}
.rb-btn-sm{padding:9px 18px;font-size:14px}
.rb-btn-lg{padding:14px 32px;font-size:16px}
.rb-btn-block{width:100%}

/* ============ BASE PARTS ============ */
.rb-pill{
 display:inline-flex;align-items:center;gap:8px;
 background:#fff;border:1px solid var(--rb-line);color:var(--rb-brand);
 font-size:13px;font-weight:700;padding:6px 16px;border-radius:999px;
 box-shadow:var(--rb-sh-1);
}
.rb-pill .dot{width:7px;height:7px;border-radius:50%;background:var(--rb-ok);box-shadow:0 0 0 4px rgba(14,165,107,.16)}
.rb-eyebrow{
 display:inline-flex;align-items:center;gap:7px;
 font-size:12.5px;font-weight:800;letter-spacing:.6px;
 color:var(--rb-brand);background:var(--rb-brand-soft);
 padding:5px 13px;border-radius:8px;margin-bottom:14px;
}
.rb-section{padding:62px 0;scroll-margin-top:118px}
.rb-section.rb-alt{background:#fff;border-top:1px solid var(--rb-line);border-bottom:1px solid var(--rb-line)}
.rb-section-head{max-width:800px;margin-bottom:34px}
.rb-section-head.rb-center{margin-left:auto;margin-right:auto;text-align:center}
.rb-section-head h2{font-size:clamp(22px,2.8vw,31px);margin-bottom:12px}
.rb-section-head p{color:var(--rb-ink-2);font-size:15.5px}
.rb-section-head h2 em{font-style:normal;color:var(--rb-brand)}

/* ============ HERO ============ */
.rb-hero-cat{
 padding:48px 0 56px;
 background:
 radial-gradient(1000px 420px at 88% -14%,#dfeaff 0%,rgba(246,248,252,0) 62%),
 radial-gradient(700px 340px at 2% 8%,#ffe8ec 0%,rgba(246,248,252,0) 58%),
 var(--rb-bg);
}
.rb-hero-grid{display:grid;grid-template-columns:minmax(0,1.38fr) minmax(0,1fr);gap:38px;align-items:start}
.rb-hero-copy h1{font-size:clamp(27px,4.1vw,45px);line-height:1.28;margin-bottom:16px}
.rb-hero-copy h1 em{font-style:normal;color:var(--rb-brand);position:relative}
.rb-hero-copy h1 em::after{
 content:"";position:absolute;left:0;right:0;bottom:2px;height:10px;
 background:linear-gradient(90deg,rgba(37,99,235,.18),rgba(37,99,235,0));
 border-radius:6px;z-index:-1;
}
.rb-hero-sub{font-size:16.5px;color:var(--rb-ink-2);max-width:640px}
.rb-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.rb-hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.rb-hero-facts span{
 display:inline-flex;align-items:center;gap:7px;
 background:#fff;border:1px solid var(--rb-line);border-radius:999px;
 font-size:13.5px;font-weight:600;color:var(--rb-ink-2);padding:7px 15px;box-shadow:var(--rb-sh-1);
}
.rb-hero-facts i{color:var(--rb-brand);font-size:12px}
.rb-promo-card{
 position:relative;background:#fff;border:1px solid #c9dcff;
 border-radius:var(--rb-radius-lg);padding:30px 26px 26px;
 box-shadow:var(--rb-sh-2);
}
.rb-burst{
 position:absolute;top:-18px;right:-12px;width:92px;height:92px;border-radius:50%;
 background:linear-gradient(135deg,#fb7185,#e11d48);color:#fff;
 display:grid;place-items:center;text-align:center;
 font-size:13px;font-weight:800;line-height:1.25;
 transform:rotate(-12deg);
 box-shadow:0 14px 28px rgba(225,29,72,.36);
 border:3px solid #fff;
}
.rb-burst small{display:block;font-size:11px;font-weight:600;opacity:.9}
.rb-promo-title{font-size:19px;font-weight:800;margin-bottom:8px;padding-right:78px}
.rb-promo-desc{font-size:14.5px;color:var(--rb-muted);margin-bottom:18px}
.rb-countdown{
 display:flex;align-items:center;gap:10px;
 background:#fff5f7;border:1px dashed #fbc7d1;border-radius:var(--rb-radius-sm);
 padding:11px 14px;margin-bottom:18px;
}
.rb-countdown i{color:var(--rb-accent-2)}
.rb-countdown b{color:var(--rb-accent-2);font-size:15.5px;letter-spacing:.4px}
.rb-countdown span{font-size:13px;color:#9f1239}
.rb-promo-list li{
 display:flex;gap:10px;align-items:flex-start;
 font-size:14.4px;color:var(--rb-ink-2);
 padding:8px 0;border-bottom:1px dashed #edf1f8;
}
.rb-promo-list li:last-child{border-bottom:0}
.rb-promo-list i{color:var(--rb-ok);font-size:12px;margin-top:6px;flex:0 0 auto}
.rb-promo-actions{display:flex;flex-direction:column;gap:10px;margin-top:20px}

/* ============ STATUS BAR ============ */
.rb-status{background:#0f172a;padding:18px 0}
.rb-status-inner{
 display:flex;align-items:center;gap:18px;
 overflow-x:auto;scrollbar-width:none;
}
.rb-status-inner::-webkit-scrollbar{display:none}
.rb-status-live{
 flex:0 0 auto;display:inline-flex;align-items:center;gap:9px;
 font-size:13.5px;font-weight:700;color:#93c5fd;
 background:rgba(37,99,235,.16);border:1px solid rgba(147,197,253,.28);
 padding:8px 16px;border-radius:999px;
}
.rb-live-dot{
 width:8px;height:8px;border-radius:50%;background:#34d399;
 box-shadow:0 0 0 0 rgba(52,211,153,.6);
 animation:rbPulse 1.8s infinite;
}
@keyframes rbPulse{
 0%{box-shadow:0 0 0 0 rgba(52,211,153,.6)}
 70%{box-shadow:0 0 0 10px rgba(52,211,153,0)}
 100%{box-shadow:0 0 0 0 rgba(52,211,153,0)}
}
.rb-stat{flex:0 0 auto;display:flex;align-items:baseline;gap:8px;padding-left:18px;border-left:1px solid rgba(255,255,255,.12)}
.rb-stat strong{font-size:20px;font-weight:800;color:#fff;letter-spacing:.3px}
.rb-stat span{font-size:13px;color:#94a3b8;white-space:nowrap}

/* ============ CARDS & GRIDS ============ */
.rb-grid{display:grid;gap:20px}
.rb-grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.rb-grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.rb-grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.rb-card{
 background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
 padding:24px;box-shadow:var(--rb-sh-1);
 transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.rb-card:hover{transform:translateY(-4px);box-shadow:var(--rb-sh-2);border-color:#c9dcff}
.rb-card h3{font-size:17.5px;margin-bottom:10px}
.rb-card p{font-size:14.6px;color:var(--rb-muted)}
.rb-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.rb-card-icon{
 width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
 background:var(--rb-brand-soft);color:var(--rb-brand);font-size:17px;margin-bottom:14px;
}
.rb-card-list li{
 font-size:14.2px;color:var(--rb-ink-2);padding:6px 0 6px 16px;position:relative;
}
.rb-card-list li::before{
 content:"";position:absolute;left:0;top:14px;width:6px;height:6px;border-radius:50%;
 background:var(--rb-brand);opacity:.55;
}
.rb-card-foot{
 display:flex;align-items:center;justify-content:space-between;gap:12px;
 margin-top:16px;padding-top:14px;border-top:1px solid var(--rb-line);
 font-size:13.2px;color:var(--rb-muted);
}
.rb-card.rb-group{border-top:3px solid var(--rb-brand)}
.rb-card.rb-group:nth-child(2){border-top-color:#0ea56b}
.rb-card.rb-group:nth-child(3){border-top-color:#f59e0b}
.rb-card.rb-group:nth-child(4){border-top-color:#e11d48}

/* ============ BADGES / TAGS ============ */
.rb-badge{
 display:inline-flex;align-items:center;gap:6px;
 font-size:12.5px;font-weight:700;padding:4px 12px;border-radius:999px;
 background:var(--rb-brand-soft);color:var(--rb-brand);
}
.rb-badge-hot{background:#ffe4e8;color:#e11d48}
.rb-badge-ok{background:#e6f7f0;color:#0e8f5f}
.rb-badge-warn{background:#fff4e2;color:#b45309}
.rb-badge-line{background:#fff;border:1px solid var(--rb-line);color:var(--rb-ink-2)}
.rb-tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.rb-tag{
 display:inline-flex;align-items:center;gap:7px;
 background:#fff;border:1px solid var(--rb-line);border-radius:999px;
 padding:8px 16px;font-size:14px;font-weight:600;color:var(--rb-ink-2);
 box-shadow:var(--rb-sh-1);transition:.22s ease;
}
.rb-tag:hover{border-color:#bfd3ff;color:var(--rb-brand);background:var(--rb-brand-soft);transform:translateY(-2px)}
.rb-tag b{font-size:12.5px;color:var(--rb-muted);font-weight:700}

/* ============ RANK LIST ============ */
.rb-rank-list{background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius-lg);box-shadow:var(--rb-sh-1);overflow:hidden}
.rb-rank-item{
 display:flex;align-items:center;gap:18px;
 padding:18px 24px;border-bottom:1px solid var(--rb-line);
 transition:background .22s ease;
}
.rb-rank-item:last-child{border-bottom:0}
.rb-rank-item:hover{background:#f8fbff}
.rb-rank-no{
 flex:0 0 auto;width:42px;height:42px;border-radius:13px;
 display:grid;place-items:center;font-weight:800;font-size:16px;
 background:#f1f5fb;color:#8494ab;
}
.rb-rank-item:nth-child(1) .rb-rank-no{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#fff;box-shadow:0 8px 18px rgba(245,158,11,.34)}
.rb-rank-item:nth-child(2) .rb-rank-no{background:linear-gradient(135deg,#94a3b8,#64748b);color:#fff}
.rb-rank-item:nth-child(3) .rb-rank-no{background:linear-gradient(135deg,#d8a47f,#b4764f);color:#fff}
.rb-rank-main{min-width:0;flex:1 1 auto}
.rb-rank-title{font-size:16px;font-weight:700;margin-bottom:6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rb-rank-meta{display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--rb-muted)}
.rb-rank-meta i{color:#aebbd0;margin-right:5px}
.rb-rank-side{flex:0 0 auto;text-align:right;min-width:104px}
.rb-heat{font-size:15px;font-weight:800;color:var(--rb-accent-2)}
.rb-heat span{font-size:12px;color:var(--rb-muted);font-weight:600;margin-left:2px}
.rb-heat-bar{height:6px;border-radius:6px;background:#eef2f9;margin-top:7px;overflow:hidden}
.rb-heat-bar i{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,#fb7185,#e11d48)}

/* ============ SHORT PICKS ============ */
.rb-shot{
 display:flex;flex-direction:column;gap:12px;
 background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
 padding:20px;box-shadow:var(--rb-sh-1);transition:.26s ease;
}
.rb-shot:hover{transform:translateY(-4px);box-shadow:var(--rb-sh-2);border-color:#c9dcff}
.rb-shot-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.rb-shot-dots{display:flex;gap:5px}
.rb-shot-dots i{width:8px;height:8px;border-radius:50%;background:#e2e8f2}
.rb-shot-dots i.on{background:var(--rb-brand)}
.rb-shot h3{font-size:16.5px}
.rb-shot p{font-size:14.2px;color:var(--rb-muted);flex:1 1 auto}

/* ============ TIMELINE ============ */
.rb-timeline{position:relative;padding-left:28px}
.rb-timeline::before{
 content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;
 background:linear-gradient(180deg,#bfd3ff,#e4eaf4);
}
.rb-tl-item{position:relative;padding:0 0 26px 8px}
.rb-tl-item:last-child{padding-bottom:0}
.rb-tl-item::before{
 content:"";position:absolute;left:-28px;top:8px;width:18px;height:18px;border-radius:50%;
 background:#fff;border:4px solid var(--rb-brand);box-shadow:0 0 0 4px rgba(37,99,235,.1);
}
.rb-tl-item:nth-child(2)::before{border-color:#0ea56b;box-shadow:0 0 0 4px rgba(14,165,107,.1)}
.rb-tl-item:nth-child(3)::before{border-color:#f59e0b;box-shadow:0 0 0 4px rgba(245,158,11,.12)}
.rb-tl-item:nth-child(4)::before{border-color:#e11d48;box-shadow:0 0 0 4px rgba(225,29,72,.1)}
.rb-tl-year{font-size:13px;font-weight:800;color:var(--rb-brand);letter-spacing:.6px;margin-bottom:4px}
.rb-tl-item h3{font-size:16.5px;margin-bottom:8px}
.rb-tl-item p{font-size:14.4px;color:var(--rb-muted)}
.rb-tl-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px}

/* ============ SCHEDULE ============ */
.rb-sched{background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius-lg);overflow:hidden;box-shadow:var(--rb-sh-1)}
.rb-sched-row{
 display:grid;grid-template-columns:112px 1fr 132px;
 gap:16px;align-items:center;
 padding:18px 24px;border-bottom:1px solid var(--rb-line);
 transition:background .22s ease;
}
.rb-sched-row:last-child{border-bottom:0}
.rb-sched-row:hover{background:#f8fbff}
.rb-sched-row.is-head{background:#f2f6fd;font-size:13px;font-weight:800;color:var(--rb-muted);letter-spacing:.4px}
.rb-sched-time{font-weight:800;color:var(--rb-brand);font-size:15.5px}
.rb-sched-name{font-size:15.4px;font-weight:700}
.rb-sched-name small{display:block;font-size:13px;color:var(--rb-muted);font-weight:500;margin-top:2px}
.rb-sched-state{text-align:right}

/* ============ QUOTES ============ */
.rb-quote{
 background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
 padding:24px;box-shadow:var(--rb-sh-1);position:relative;transition:.26s ease;
}
.rb-quote:hover{transform:translateY(-4px);box-shadow:var(--rb-sh-2)}
.rb-quote::before{
 content:"\201C";position:absolute;top:6px;right:20px;
 font-size:60px;line-height:1;color:#e6eefc;font-family:Georgia,serif;
}
.rb-quote p{font-size:14.8px;color:var(--rb-ink-2);position:relative;z-index:1}
.rb-quote-who{display:flex;align-items:center;gap:11px;margin-top:18px;padding-top:16px;border-top:1px dashed #edf1f8}
.rb-quote-ava{
 width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
 background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff;font-weight:800;font-size:15px;
}
.rb-quote-who b{display:block;font-size:14.5px}
.rb-quote-who span{font-size:12.6px;color:var(--rb-muted)}

/* ============ FAQ ============ */
.rb-faq{display:grid;gap:12px;max-width:920px;margin:0 auto}
.rb-faq-item{
 background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
 box-shadow:var(--rb-sh-1);overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;
}
.rb-faq-item[open]{border-color:#c9dcff;box-shadow:var(--rb-sh-2)}
.rb-faq-item summary{
 cursor:pointer;list-style:none;padding:19px 24px;
 font-size:16px;font-weight:700;display:flex;align-items:center;gap:12px;
}
.rb-faq-item summary::-webkit-details-marker{display:none}
.rb-faq-item summary::after{
 content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
 margin-left:auto;color:var(--rb-brand);font-size:13px;transition:transform .25s ease;
}
.rb-faq-item[open] summary::after{transform:rotate(45deg)}
.rb-faq-item summary:focus-visible{outline:3px solid rgba(37,99,235,.35);outline-offset:-3px}
.rb-faq-body{padding:0 24px 22px;font-size:14.8px;color:var(--rb-ink-2);border-top:1px dashed #edf1f8;padding-top:16px}

/* ============ CTA BAND ============ */
.rb-cta{
 background:linear-gradient(135deg,#1d4ed8,#2563eb 55%,#3b82f6);
 border-radius:var(--rb-radius-lg);
 padding:44px 40px;
 color:#fff;position:relative;overflow:hidden;
 box-shadow:var(--rb-sh-3);
}
.rb-cta::after{
 content:"";position:absolute;right:-70px;top:-70px;width:270px;height:270px;border-radius:50%;
 background:rgba(255,255,255,.12);
}
.rb-cta::before{
 content:"";position:absolute;right:90px;bottom:-100px;width:200px;height:200px;border-radius:50%;
 background:rgba(255,255,255,.08);
}
.rb-cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.5fr 1fr;gap:30px;align-items:center}
.rb-cta h2{font-size:clamp(22px,2.8vw,30px);margin-bottom:12px;color:#fff}
.rb-cta p{font-size:15.4px;color:rgba(255,255,255,.86);max-width:620px}
.rb-cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}

/* ============ FOOTER ============ */
.rb-footer{background:#0f172a;color:#cbd5e1;padding:56px 0 26px;margin-top:64px}
.rb-footer .rb-brand{color:#fff}
.rb-footer .rb-brand-text{color:#fff}
.rb-footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:34px}
.rb-footer h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:700}
.rb-footer ul li{font-size:14px;color:#94a3b8;padding:5px 0}
.rb-footer ul li a{color:#94a3b8;transition:color .2s ease}
.rb-footer ul li a:hover{color:#fff}
.rb-footer-about{font-size:14px;color:#94a3b8;margin-top:14px;line-height:1.8;max-width:380px}
.rb-footer-bottom{
 margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
 display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
 font-size:13px;color:#7c8aa5;
}

/* ============ RESPONSIVE ============ */
@media (max-width:1024px){
 .rb-hero-grid{grid-template-columns:1fr;gap:30px}
 .rb-grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .rb-grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
 .rb-footer-grid{grid-template-columns:1fr 1fr;gap:28px}
 .rb-cta-inner{grid-template-columns:1fr}
 .rb-cta-actions{justify-content:flex-start}
}
@media (max-width:768px){
 .rb-brand-row{gap:12px}
 .rb-head-tools{width:100%;margin-left:0}
 .rb-search{flex:1 1 auto}
 .rb-search input{width:100%}
 .rb-section{padding:48px 0}
 .rb-hero-cat{padding:36px 0 44px}
 .rb-sched-row{grid-template-columns:88px 1fr;gap:12px;padding:16px 18px}
 .rb-sched-state{grid-column:2;text-align:left}
 .rb-sched-row.is-head{display:none}
 .rb-rank-item{gap:12px;padding:16px 16px;align-items:flex-start;flex-wrap:wrap}
 .rb-rank-side{min-width:0;text-align:left;width:100%;padding-left:54px}
 .rb-cta{padding:34px 24px}
 .rb-burst{width:76px;height:76px;font-size:11.5px;top:-14px;right:-8px}
 .rb-promo-title{padding-right:70px}
}
@media (max-width:520px){
 .rb-grid-2,.rb-grid-3,.rb-grid-4{grid-template-columns:1fr}
 .rb-hero-copy h1{font-size:25px}
 .rb-hero-actions .rb-btn{width:100%}
 .rb-footer-grid{grid-template-columns:1fr}
 .rb-faq-item summary{padding:16px 18px;font-size:15px}
 .rb-faq-body{padding:14px 18px 20px}
 .rb-rank-side{padding-left:0}
 .rb-tag{font-size:13.2px;padding:7px 14px}
}

/* roulang page: category3 */
:root{
 --rb-brand:#2563eb;
 --rb-brand-2:#1d4ed8;
 --rb-brand-soft:#eef4ff;
 --rb-ink:#0f172a;
 --rb-ink-2:#334155;
 --rb-muted:#64748b;
 --rb-line:#e4eaf4;
 --rb-bg:#f6f8fc;
 --rb-white:#ffffff;
 --rb-accent:#f43f5e;
 --rb-ok:#0ea56b;
 --rb-warn:#f59e0b;
 --rb-radius-sm:10px;
 --rb-radius:16px;
 --rb-radius-lg:24px;
 --rb-sh-1:0 1px 2px rgba(15,23,42,.05),0 6px 18px rgba(15,23,42,.05);
 --rb-sh-2:0 14px 38px rgba(15,23,42,.10);
 --rb-sh-3:0 26px 60px rgba(15,23,42,.14);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
 background:var(--rb-bg);
 color:var(--rb-ink);
 font-size:16px;
 line-height:1.75;
 -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(37,99,235,.35);outline-offset:2px}
.rb-container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ============ HEADER ============ */
.rb-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.94);
 backdrop-filter:blur(14px);
 -webkit-backdrop-filter:blur(14px);
 border-bottom:1px solid var(--rb-line);
}
.rb-brand-row{display:flex;align-items:center;gap:16px;padding:14px 0 8px;flex-wrap:wrap}
.rb-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:.2px;color:var(--rb-ink)}
.rb-brand-mark{
 width:36px;height:36px;border-radius:12px;flex:0 0 auto;
 background:linear-gradient(135deg,#3b82f6,#1d4ed8);
 color:#fff;display:grid;place-items:center;font-size:17px;font-weight:800;
 box-shadow:0 8px 18px rgba(37,99,235,.34);
}
.rb-brand-text{white-space:nowrap}
.rb-head-tools{display:flex;align-items:center;gap:12px;margin-left:auto;flex-wrap:wrap}
.rb-search{
 display:flex;align-items:center;gap:8px;
 background:#f2f6fd;border:1px solid var(--rb-line);
 border-radius:999px;padding:7px 14px;transition:.2s;
}
.rb-search:focus-within{background:#fff;border-color:#bfd3ff;box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.rb-search i{color:var(--rb-muted);font-size:13px}
.rb-search input{border:0;outline:0;background:transparent;width:170px;font-size:14px;color:var(--rb-ink)}
.rb-search input::placeholder{color:#94a3b8}
.rb-nav{display:flex;gap:8px;overflow-x:auto;padding:6px 0 12px;scrollbar-width:none;-ms-overflow-style:none}
.rb-nav::-webkit-scrollbar{display:none}
.rb-chip{
 flex:0 0 auto;padding:7px 17px;border-radius:999px;
 background:#fff;border:1px solid var(--rb-line);color:var(--rb-ink-2);
 font-size:14px;font-weight:600;white-space:nowrap;transition:.22s ease;
}
.rb-chip:hover{border-color:#bfd3ff;color:var(--rb-brand);background:var(--rb-brand-soft);transform:translateY(-1px)}
.rb-chip.is-active{background:var(--rb-brand);border-color:var(--rb-brand);color:#fff;box-shadow:0 8px 18px rgba(37,99,235,.28)}
.rb-chip.is-active:hover{color:#fff}

/* ============ BUTTONS ============ */
.rb-btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 border:1px solid transparent;border-radius:999px;cursor:pointer;
 font-weight:700;font-size:15px;padding:12px 26px;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.rb-btn-brand{background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff;box-shadow:0 12px 26px rgba(37,99,235,.30)}
.rb-btn-brand:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(37,99,235,.36);color:#fff}
.rb-btn-brand:active{transform:translateY(0);box-shadow:0 8px 18px rgba(37,99,235,.30)}
.rb-btn-ghost{background:#fff;border-color:var(--rb-line);color:var(--rb-ink-2);box-shadow:var(--rb-sh-1)}
.rb-btn-ghost:hover{border-color:#bfd3ff;color:var(--rb-brand);transform:translateY(-2px);box-shadow:var(--rb-sh-2)}
.rb-btn-sm{padding:9px 18px;font-size:14px}
.rb-btn-lg{padding:14px 32px;font-size:16px}

/* ============ RANK HERO ============ */
.rb-rank-hero{
 padding:34px 0 40px;
 background:
 radial-gradient(1000px 420px at 88% -18%,#e3edff 0%,rgba(246,248,252,0) 62%),
 radial-gradient(700px 340px at 2% 8%,#eaf6f1 0%,rgba(246,248,252,0) 58%),
 var(--rb-bg);
 border-bottom:1px solid var(--rb-line);
}
.rb-crumb{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--rb-muted);padding:16px 0 22px;flex-wrap:wrap}
.rb-crumb a{color:var(--rb-ink-2);font-weight:600;transition:.2s}
.rb-crumb a:hover{color:var(--rb-brand)}
.rb-rank-top{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:34px;align-items:start}
.rb-pill{
 display:inline-flex;align-items:center;gap:8px;
 background:#fff;border:1px solid var(--rb-line);color:var(--rb-brand);
 font-size:13px;font-weight:700;padding:6px 16px;border-radius:999px;
 box-shadow:var(--rb-sh-1);margin-bottom:16px;
}
.rb-pill .dot{width:7px;height:7px;border-radius:50%;background:var(--rb-ok);box-shadow:0 0 0 4px rgba(14,165,107,.16)}
.rb-rank-hero h1{font-size:clamp(26px,3.9vw,42px);line-height:1.3;margin-bottom:14px}
.rb-rank-hero h1 em{font-style:normal;color:var(--rb-brand)}
.rb-rank-lead{font-size:16.5px;color:var(--rb-ink-2);max-width:640px}
.rb-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.rb-icon-matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.rb-icon-cell{
 background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
 padding:16px 14px;text-align:center;box-shadow:var(--rb-sh-1);transition:.26s ease;
}
.rb-icon-cell:hover{transform:translateY(-4px);box-shadow:var(--rb-sh-2);border-color:#cadcff}
.rb-icon-cell i{font-size:19px;color:var(--rb-brand);margin-bottom:8px;display:block}
.rb-icon-cell span{font-size:13.5px;font-weight:700;color:var(--rb-ink-2);display:block;line-height:1.5}
.rb-icon-cell small{display:block;font-size:12.5px;color:var(--rb-muted);margin-top:4px}
.rb-status-strip{
 margin-top:26px;display:flex;flex-wrap:wrap;gap:10px 26px;align-items:center;
 background:#fff;border:1px solid var(--rb-line);border-radius:999px;
 padding:12px 24px;box-shadow:var(--rb-sh-1);font-size:13.8px;color:var(--rb-ink-2);
}
.rb-status-strip b{color:var(--rb-brand);font-weight:800}
.rb-status-strip .sep{width:1px;height:14px;background:var(--rb-line);display:inline-block}

/* ============ SECTION ============ */
.rb-section{padding:58px 0;scroll-margin-top:120px}
.rb-section.rb-alt{background:#fff;border-top:1px solid var(--rb-line);border-bottom:1px solid var(--rb-line)}
.rb-section-head{max-width:800px;margin-bottom:30px}
.rb-section-head.rb-center{margin-left:auto;margin-right:auto;text-align:center}
.rb-eyebrow{
 display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:1.2px;
 color:var(--rb-brand);background:var(--rb-brand-soft);
 padding:5px 14px;border-radius:999px;margin-bottom:13px;text-transform:uppercase;
}
.rb-section h2{font-size:clamp(21px,2.6vw,30px);line-height:1.36;margin-bottom:12px}
.rb-section-sub{color:var(--rb-muted);font-size:15.5px}

/* ============ STATS ============ */
.rb-stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.rb-stat-card{
 background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
 padding:22px 20px;box-shadow:var(--rb-sh-1);transition:.26s ease;
}
.rb-stat-card:hover{transform:translateY(-4px);box-shadow:var(--rb-sh-2)}
.rb-stat-num{font-size:31px;font-weight:800;color:var(--rb-brand);line-height:1.15;letter-spacing:-.5px}
.rb-stat-num span{font-size:15px;color:var(--rb-ink-2);font-weight:700;margin-left:4px}
.rb-stat-label{font-size:14.6px;font-weight:700;margin-top:6px}
.rb-stat-note{font-size:13px;color:var(--rb-muted);margin-top:4px}

/* ============ BOARD / RANK LIST ============ */
.rb-board{
 background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius-lg);
 box-shadow:var(--rb-sh-1);overflow:hidden;
}
.rb-board-head{
 display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
 padding:20px 26px;border-bottom:1px solid var(--rb-line);background:#fbfdff;
}
.rb-board-head h3{font-size:18.5px;font-weight:800}
.rb-board-head p{font-size:13.4px;color:var(--rb-muted);margin-top:3px}
.rb-board-tag{
 display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:700;
 color:var(--rb-brand);background:var(--rb-brand-soft);border-radius:999px;padding:6px 15px;
}
.rb-rank-list{padding:6px 10px 12px}
.rb-rank-row{
 display:grid;grid-template-columns:56px minmax(0,1fr) 190px 96px;
 gap:14px;align-items:center;
 padding:15px 16px;border-radius:var(--rb-radius);transition:.22s ease;
}
.rb-rank-row:hover{background:#f5f9ff;transform:translateX(2px)}
.rb-rank-row + .rb-rank-row{border-top:1px dashed #eef2f9}
.rb-rank-no{
 width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
 font-weight:800;font-size:15.5px;background:#f1f5fc;color:var(--rb-ink-2);
}
.rb-rank-no.is-top1{background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff;box-shadow:0 8px 18px rgba(37,99,235,.32)}
.rb-rank-no.is-top2{background:#e2ecff;color:#1d4ed8}
.rb-rank-no.is-top3{background:#eaf6f1;color:#0e7a51}
.rb-rank-title{font-size:15.8px;font-weight:700;line-height:1.5}
.rb-rank-meta{font-size:13px;color:var(--rb-muted);margin-top:4px;display:flex;flex-wrap:wrap;gap:6px 14px}
.rb-tag{
 display:inline-flex;align-items:center;
 font-size:12.4px;font-weight:600;color:var(--rb-brand-2);
 background:#f1f6ff;border:1px solid #dbe7ff;border-radius:999px;padding:2px 11px;
}
.rb-tag.is-warm{color:#b4384f;background:#fff1f3;border-color:#ffd9e0}
.rb-tag.is-fresh{color:#0e7a51;background:#eefaf4;border-color:#cdeee0}
.rb-meter{height:8px;border-radius:999px;background:#edf1f8;overflow:hidden}
.rb-meter-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#60a5fa,#1d4ed8)}
.rb-meter-label{font-size:12.6px;color:var(--rb-muted);margin-top:7px;display:flex;justify-content:space-between}
.rb-rank-hot{text-align:right}
.rb-rank-hot b{display:block;font-size:19px;font-weight:800;color:var(--rb-brand);line-height:1.2}
.rb-rank-hot span{font-size:12.4px;color:var(--rb-muted)}

/* ============ GROUP CARDS ============ */
.rb-group-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.rb-group-card{
 background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
 padding:24px 22px;box-shadow:var(--rb-sh-1);transition:.26s ease;display:flex;flex-direction:column;gap:10px;
}
.rb-group-card:hover{transform:translateY(-5px);box-shadow:var(--rb-sh-2);border-color:#cadcff}
.rb-group-icon{
 width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
 background:var(--rb-brand-soft);color:var(--rb-brand);font-size:18px;
}
.rb-group-name{font-size:17px;font-weight:800}
.rb-group-desc{font-size:14.4px;color:var(--rb-ink-2)}
.rb-group-foot{
 display:flex;align-items:center;justify-content:space-between;
 border-top:1px dashed #eef2f9;padding-top:12px;margin-top:auto;
 font-size:13.2px;color:var(--rb-muted);
}
.rb-group-foot b{color:var(--rb-brand);font-size:15px}

/* ============ RISE LIST ============ */
.rb-rise-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.rb-rise-item{
 display:flex;align-items:center;gap:16px;
 background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
 padding:16px 20px;box-shadow:var(--rb-sh-1);transition:.24s ease;
}
.rb-rise-item:hover{transform:translateY(-3px);box-shadow:var(--rb-sh-2)}
.rb-rise-rank{
 flex:0 0 auto;width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
 background:#eefaf4;color:#0e7a51;font-weight:800;font-size:14.5px;
}
.rb-rise-body{min-width:0;flex:1}
.rb-rise-body h4{font-size:15.3px;font-weight:700;line-height:1.5}
.rb-rise-body p{font-size:13px;color:var(--rb-muted);margin-top:3px}
.rb-rise-delta{flex:0 0 auto;font-size:14px;font-weight:800;color:var(--rb-accent)}

/* ============ REVIEWS ============ */
.rb-review-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.rb-review-card{
 background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
 padding:24px 22px;box-shadow:var(--rb-sh-1);position:relative;transition:.26s ease;
}
.rb-review-card:hover{transform:translateY(-4px);box-shadow:var(--rb-sh-2)}
.rb-review-card::before{
 content:"\201C";position:absolute;top:6px;right:20px;font-size:52px;line-height:1;
 color:#e3ecfb;font-family:Georgia,serif;
}
.rb-review-text{font-size:14.6px;color:var(--rb-ink-2);position:relative;z-index:1}
.rb-review-user{
 display:flex;align-items:center;gap:10px;margin-top:16px;padding-top:14px;
 border-top:1px dashed #eef2f9;font-size:13.4px;color:var(--rb-muted);
}
.rb-review-avatar{
 width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
 background:var(--rb-brand-soft);color:var(--rb-brand);font-weight:800;font-size:13.5px;
}
.rb-review-stars{margin-left:auto;color:var(--rb-warn);font-size:12px;letter-spacing:1px}

/* ============ METRIC ============ */
.rb-metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.rb-metric-card{
 background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
 padding:22px 20px;box-shadow:var(--rb-sh-1);transition:.26s ease;
}
.rb-metric-card:hover{transform:translateY(-4px);box-shadow:var(--rb-sh-2)}
.rb-metric-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.rb-metric-head i{color:var(--rb-brand);font-size:17px}
.rb-metric-weight{font-size:13px;font-weight:800;color:var(--rb-brand-2);background:var(--rb-brand-soft);border-radius:999px;padding:3px 12px}
.rb-metric-card h4{font-size:16px;font-weight:800;margin-top:12px}
.rb-metric-card p{font-size:13.8px;color:var(--rb-muted);margin-top:6px}

/* ============ TIMELINE ============ */
.rb-timeline{
 display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;
 background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius-lg);
 box-shadow:var(--rb-sh-1);overflow:hidden;
}
.rb-timeline-item{padding:26px 22px;border-right:1px solid var(--rb-line);position:relative}
.rb-timeline-item:last-child{border-right:0}
.rb-timeline-item::before{
 content:"";position:absolute;top:0;left:0;width:100%;height:3px;
 background:linear-gradient(90deg,#60a5fa,#1d4ed8);opacity:0;transition:.26s ease;
}
.rb-timeline-item:hover::before{opacity:1}
.rb-timeline-item:hover{background:#fbfdff}
.rb-timeline-time{font-size:19px;font-weight:800;color:var(--rb-brand);letter-spacing:-.4px}
.rb-timeline-item h4{font-size:15.4px;font-weight:700;margin-top:10px}
.rb-timeline-item p{font-size:13.6px;color:var(--rb-muted);margin-top:6px}

/* ============ FAQ ============ */
.rb-faq{display:grid;gap:14px;max-width:900px}
.rb-faq-item{
 background:#fff;border:1px solid var(--rb-line);border-radius:var(--rb-radius);
 padding:20px 24px;box-shadow:var(--rb-sh-1);transition:.24s ease;
}
.rb-faq-item:hover{border-color:#cadcff;box-shadow:var(--rb-sh-2)}
.rb-faq-q{display:flex;align-items:flex-start;gap:12px;font-size:16px;font-weight:800}
.rb-faq-q i{color:var(--rb-brand);font-size:15px;margin-top:5px}
.rb-faq-a{font-size:14.6px;color:var(--rb-ink-2);margin-top:10px;padding-left:27px}

/* ============ CTA ============ */
.rb-cta{
 background:linear-gradient(135deg,#1d4ed8,#2563eb 48%,#3b82f6);
 border-radius:var(--rb-radius-lg);
 padding:44px 42px;color:#fff;
 box-shadow:0 26px 60px rgba(29,78,216,.30);
 display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:32px;align-items:center;
}
.rb-cta h2{font-size:clamp(21px,2.6vw,29px);line-height:1.36;color:#fff}
.rb-cta p{font-size:15.4px;color:rgba(255,255,255,.86);margin-top:12px}
.rb-cta-form{display:flex;flex-wrap:wrap;gap:12px}
.rb-cta-form input{
 flex:1 1 220px;min-width:0;border:1px solid rgba(255,255,255,.35);
 background:rgba(255,255,255,.14);border-radius:999px;padding:12px 20px;
 color:#fff;outline:0;transition:.22s;
}
.rb-cta-form input::placeholder{color:rgba(255,255,255,.72)}
.rb-cta-form input:focus{background:rgba(255,255,255,.22);border-color:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.18)}
.rb-cta-note{font-size:13px;color:rgba(255,255,255,.78);margin-top:12px}
.rb-cta-ok{display:none;margin-top:12px;font-size:13.6px;font-weight:700;color:#d9ffe9}
.rb-cta-ok.is-show{display:block}

/* ============ FOOTER ============ */
.rb-footer{background:#0f172a;color:#c9d5e8;margin-top:20px}
.rb-footer-grid{
 display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px;
 padding:52px 0 34px;
}
.rb-footer .rb-brand{color:#fff}
.rb-footer .rb-brand-mark{background:linear-gradient(135deg,#3b82f6,#1d4ed8)}
.rb-footer-about{font-size:14px;color:#9fb0c9;margin-top:16px;max-width:360px}
.rb-footer h4{font-size:15px;color:#fff;font-weight:800;margin-bottom:16px}
.rb-footer ul li{font-size:14px;color:#9fb0c9;padding:5px 0}
.rb-footer ul li a{color:#c9d5e8;transition:.2s}
.rb-footer ul li a:hover{color:#7fb0ff}
.rb-footer-bottom{
 display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
 border-top:1px solid rgba(255,255,255,.10);padding:20px 0 28px;
 font-size:13.2px;color:#8296b3;
}

/* ============ RESPONSIVE ============ */
@media (max-width:1024px){
 .rb-rank-top{grid-template-columns:1fr;gap:26px}
 .rb-icon-matrix{grid-template-columns:repeat(3,minmax(0,1fr))}
 .rb-stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .rb-group-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .rb-metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .rb-review-grid{grid-template-columns:1fr 1fr}
 .rb-rise-list{grid-template-columns:1fr}
 .rb-timeline{grid-template-columns:repeat(2,minmax(0,1fr))}
 .rb-timeline-item:nth-child(2){border-right:0}
 .rb-timeline-item:nth-child(1),.rb-timeline-item:nth-child(2){border-bottom:1px solid var(--rb-line)}
 .rb-cta{grid-template-columns:1fr;padding:36px 30px}
 .rb-footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
 .rb-brand-row{gap:12px}
 .rb-head-tools{width:100%;margin-left:0}
 .rb-search{flex:1 1 auto}
 .rb-search input{width:100%}
 .rb-rank-row{grid-template-columns:44px minmax(0,1fr);gap:12px;row-gap:10px}
 .rb-rank-row .rb-rank-metercell{grid-column:2 / -1}
 .rb-rank-hot{grid-column:2;text-align:left;display:flex;align-items:baseline;gap:8px}
 .rb-rank-hot b{font-size:17px}
 .rb-stat-num{font-size:27px}
 .rb-review-grid{grid-template-columns:1fr}
 .rb-section{padding:48px 0}
 .rb-status-strip{border-radius:var(--rb-radius);gap:8px 18px;padding:14px 20px}
 .rb-status-strip .sep{display:none}
}
@media (max-width:520px){
 .rb-container{padding:0 16px}
 .rb-brand-text{font-size:17px}
 .rb-icon-matrix{grid-template-columns:1fr 1fr}
 .rb-stat-grid{grid-template-columns:1fr}
 .rb-group-grid{grid-template-columns:1fr}
 .rb-metric-grid{grid-template-columns:1fr}
 .rb-timeline{grid-template-columns:1fr}
 .rb-timeline-item{border-right:0;border-bottom:1px solid var(--rb-line)}
 .rb-timeline-item:last-child{border-bottom:0}
 .rb-board-head{padding:18px 20px}
 .rb-rank-list{padding:4px 6px 10px}
 .rb-rank-row{padding:14px 12px}
 .rb-hero-actions .rb-btn{width:100%}
 .rb-cta{padding:30px 22px}
 .rb-cta-form input{flex:1 1 100%}
 .rb-footer-grid{grid-template-columns:1fr;gap:24px}
}

/* 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}