/* roulang page: index */
:root{
  --ink-900:#14211C;--ink-600:#55635C;--ink-300:#8C9791;
  --green-900:#0E3B32;--green-700:#14513F;--green-400:#2E7C61;
  --brass-500:#C8A45C;--brass-200:#EADFC2;--card-red:#B22B33;
  --bg:#F7F5EF;--bg-alt:#FFFFFF;--line:#E4DFD3;--line-dark:rgba(200,164,92,.32);
  --text-light:#F3F1E9;--text-muted:#C9CFC9;
  --r-card:14px;--r-img:12px;--r-btn:10px;
  --sh-1:0 1px 2px rgba(14,59,50,.06);
  --sh-2:0 14px 34px -14px rgba(14,59,50,.22);
  --ff:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --ff-num:"Inter",ui-monospace,"DIN Alternate","SFMono-Regular",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{margin:0;background:var(--bg);color:var(--ink-900);font-family:var(--ff);font-size:16px;line-height:1.78;letter-spacing:0;text-align:left;}
img{max-width:100%;display:block;height:auto;}
a{color:var(--green-700);text-decoration:none;transition:color .18s ease,border-color .18s ease;}
a:hover{color:var(--green-400);}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;}
h1{font-size:clamp(30px,5vw,46px);line-height:1.22;}
h2{font-size:clamp(24px,3.4vw,34px);line-height:1.3;}
h3{font-size:20px;line-height:1.4;font-weight:700;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.grid-container{max-width:1200px;padding-left:20px;padding-right:20px;}
.num{font-family:var(--ff-num);letter-spacing:.04em;}
.rl-eyebrow{display:inline-block;font-size:13px;letter-spacing:.18em;font-weight:600;color:var(--brass-500);text-transform:uppercase;}
.rl-section{padding:56px 0;}
.rl-section--tight{padding:44px 0;}
.rl-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.rl-head p{color:var(--ink-600);font-size:15px;max-width:640px;margin:12px 0 0;}
.rl-more{font-size:14px;font-weight:600;border-bottom:1px solid var(--brass-500);padding-bottom:2px;color:var(--green-700);}
.rl-more:hover{border-color:var(--green-400);}
/* header */
.rl-header{position:fixed;top:0;left:0;right:0;z-index:60;height:64px;background:rgba(247,245,239,.86);backdrop-filter:saturate(140%) blur(8px);-webkit-backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid transparent;transition:border-color .2s ease,background .2s ease;}
.rl-header.is-scrolled{border-bottom-color:var(--line);background:rgba(247,245,239,.95);}
.rl-header__inner{max-width:1200px;margin:0 auto;height:64px;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.rl-logo{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.02em;color:var(--ink-900);font-size:18px;white-space:nowrap;}
.rl-logo:hover{color:var(--ink-900);}
.rl-logo__mark{width:26px;height:26px;border-radius:8px;background:var(--green-900);color:var(--brass-500);display:flex;align-items:center;justify-content:center;font-size:14px;line-height:1;}
.rl-nav{display:flex;align-items:center;gap:22px;}
.rl-nav__list{display:flex;align-items:center;gap:0;}
.rl-nav__list li{position:relative;padding:0 16px;}
.rl-nav__list li+li::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:1px;height:14px;background:var(--line);}
.rl-nav__list a{display:inline-block;padding:20px 0;font-size:15px;color:var(--ink-600);font-weight:500;position:relative;}
.rl-nav__list a::after{content:"";position:absolute;left:0;bottom:16px;width:0;height:2px;background:var(--brass-500);transition:width .2s ease;}
.rl-nav__list a:hover{color:var(--ink-900);}
.rl-nav__list a:hover::after{width:100%;}
.rl-nav__list a.is-active{color:var(--ink-900);font-weight:700;}
.rl-nav__list a.is-active::after{width:100%;}
.rl-nav__list a.is-active::before{content:"";position:absolute;left:-8px;top:50%;transform:translateY(-50%);width:4px;height:4px;border-radius:50%;background:var(--brass-500);}
.rl-burger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:var(--bg-alt);align-items:center;justify-content:center;flex-direction:column;gap:4px;}
.rl-burger span{display:block;width:16px;height:1.6px;background:var(--ink-900);transition:transform .18s ease,opacity .18s ease;}
.rl-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(5.6px) rotate(45deg);}
.rl-burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.rl-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg);}
/* buttons */
.rl-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1.5px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;}
.rl-btn--primary{background:var(--green-700);color:var(--text-light);}
.rl-btn--primary:hover{background:var(--green-400);color:#fff;transform:translateY(-1px);}
.rl-btn--primary:active{transform:none;}
.rl-btn--ghost{background:transparent;border-color:var(--green-700);color:var(--green-700);}
.rl-btn--ghost:hover{background:var(--brass-200);border-color:var(--brass-500);color:var(--green-700);}
.rl-btn--brass{background:var(--brass-500);color:var(--ink-900);}
.rl-btn--brass:hover{background:#d6b46e;color:var(--ink-900);transform:translateY(-1px);}
.rl-btn--outline-light{background:transparent;border-color:rgba(243,241,233,.5);color:var(--text-light);}
.rl-btn--outline-light:hover{border-color:var(--brass-500);color:var(--brass-500);}
.rl-btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--brass-500);outline-offset:2px;}
/* hero */
.rl-hero{position:relative;margin-top:64px;overflow:hidden;background:var(--green-900);color:var(--text-light);}
.rl-hero__bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.42;}
.rl-hero__mask{position:absolute;inset:0;background:linear-gradient(115deg,rgba(14,59,50,.96) 0%,rgba(14,59,50,.86) 46%,rgba(14,59,50,.55) 100%);}
.rl-hero__inner{position:relative;z-index:2;padding:64px 0 72px;}
.rl-hero h1{color:var(--text-light);max-width:14em;}
.rl-hero__sub{margin-top:18px;font-size:17px;line-height:1.7;color:var(--text-muted);max-width:30em;}
.rl-hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px;}
.rl-hero__meta{display:flex;flex-wrap:wrap;gap:0;margin-top:36px;border-top:1px solid var(--line-dark);padding-top:20px;}
.rl-hero__meta div{padding:0 22px;border-left:1px solid var(--line-dark);}
.rl-hero__meta div:first-child{padding-left:0;border-left:0;}
.rl-hero__meta dt{font-size:12px;letter-spacing:.14em;color:var(--brass-500);font-weight:600;margin-bottom:6px;}
.rl-hero__meta dd{margin:0;font-size:16px;color:var(--text-light);font-family:var(--ff-num);letter-spacing:.04em;}
.rl-hero__shot{border-radius:var(--r-card);border:1px solid var(--line-dark);overflow:hidden;box-shadow:0 30px 60px -30px rgba(0,0,0,.6);}
.rl-hero__shot img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.rl-hero__shot figcaption{font-size:13px;color:var(--text-muted);padding:12px 16px;border-top:1px solid var(--line-dark);background:rgba(14,59,50,.5);}
/* steps */
.rl-step{display:flex;gap:24px;padding:26px 0;border-bottom:1px solid var(--line);align-items:flex-start;}
.rl-step:first-child{border-top:1px solid var(--line);}
.rl-step__num{font-family:var(--ff-num);font-size:40px;line-height:1;font-weight:700;color:var(--brass-500);letter-spacing:.02em;min-width:68px;}
.rl-step h3{margin-bottom:8px;}
.rl-step p{color:var(--ink-600);font-size:15px;margin:0;}
.rl-figure{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--bg-alt);box-shadow:var(--sh-1);}
.rl-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.rl-figure figcaption{font-size:13px;color:var(--ink-300);padding:12px 18px;}
.rl-bullets{margin-top:18px;}
.rl-bullets li{position:relative;padding-left:20px;margin-bottom:10px;color:var(--ink-600);font-size:15px;}
.rl-bullets li::before{content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:50%;background:var(--brass-500);}
/* rail */
.rl-rail{display:flex;gap:20px;overflow-x:auto;padding:4px 4px 20px;scrollbar-width:none;}
.rl-rail::-webkit-scrollbar{display:none;}
.rl-rail__item{flex:0 0 300px;}
.rl-card{position:relative;background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;height:100%;}
.rl-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brass-500);}
.rl-card__corner{position:absolute;top:0;left:0;width:3px;height:38px;background:var(--brass-500);z-index:3;}
.rl-card__media{overflow:hidden;background:var(--green-900);}
.rl-card__media img{width:100%;object-fit:cover;transition:transform .35s ease;}
.rl-card:hover .rl-card__media img{transform:scale(1.03);}
.rl-card__body{padding:20px 22px 22px;}
.rl-card h3{font-size:18px;margin-bottom:8px;}
.rl-card p{font-size:14.5px;line-height:1.7;color:var(--ink-600);}
.rl-badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.4;}
.rl-badge--cat{background:rgba(46,124,97,.12);color:var(--green-700);}
.rl-badge--brass{background:var(--brass-200);color:#6B5424;}
.rl-badge--warn{background:rgba(178,43,51,.1);color:var(--card-red);}
.rl-card__arrow{position:absolute;right:16px;bottom:16px;color:var(--brass-500);font-size:15px;}
/* reward cards */
.rl-reward .rl-card__media img{aspect-ratio:4/3;}
.rl-reward .rl-card__badge{position:absolute;top:14px;right:14px;z-index:3;}
/* progress */
.rl-progress{background:var(--green-900);color:var(--text-light);border-radius:var(--r-card);border:1px solid var(--line-dark);padding:40px 32px 34px;}
.rl-progress h2{color:var(--text-light);}
.rl-progress__track{display:flex;align-items:center;margin:36px 0 12px;}
.rl-progress__dot{width:16px;height:16px;border-radius:50%;flex:0 0 auto;border:2px solid var(--ink-300);background:transparent;}
.rl-progress__dot.is-done{background:var(--green-400);border-color:var(--green-400);}
.rl-progress__dot.is-now{border-color:var(--brass-500);background:var(--brass-500);}
.rl-progress__line{flex:1 1 auto;height:6px;border-radius:999px;background:rgba(243,241,233,.16);overflow:hidden;}
.rl-progress__line i{display:block;height:100%;border-radius:999px;background:var(--green-400);}
.rl-progress__line i.now{background:var(--brass-500);}
.rl-progress__stages{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:26px;}
.rl-progress__stages h3{color:var(--text-light);font-size:17px;margin-bottom:8px;}
.rl-progress__stages p{font-size:13px;color:var(--text-muted);margin-bottom:12px;}
/* proof */
.rl-quote{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;height:100%;box-shadow:var(--sh-1);}
.rl-quote p{font-size:15px;color:var(--ink-600);}
.rl-quote__who{margin-top:16px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-300);}
.rl-quote__who span.dot{width:8px;height:8px;border-radius:50%;background:var(--brass-500);}
.rl-stats{border-top:1px solid var(--line);margin-top:40px;padding-top:28px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:left;}
.rl-stats b{display:block;font-family:var(--ff-num);font-size:30px;font-weight:700;color:var(--green-700);letter-spacing:.04em;}
.rl-stats span{font-size:13px;color:var(--ink-300);}
/* posts */
.rl-posts{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rl-post{display:flex;flex-direction:column;}
.rl-post .rl-card__media img{aspect-ratio:16/9;}
.rl-post__title{font-size:17px;line-height:1.5;font-weight:700;color:var(--ink-900);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rl-post:hover .rl-post__title{color:var(--green-700);}
.rl-post__sum{font-size:14.5px;line-height:1.7;color:var(--ink-600);margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rl-post__meta{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-300);}
.rl-post__meta .num{font-family:var(--ff-num);}
.rl-empty{border:1px dashed var(--line);border-radius:var(--r-card);padding:52px 24px;text-align:center;background:rgba(255,255,255,.6);}
.rl-empty p{font-size:15px;color:var(--ink-600);margin-bottom:18px;}
/* faq */
.rl-faq{border-top:1px solid var(--line);}
.rl-faq__item{border-bottom:1px solid var(--line);}
.rl-faq__q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;background:none;border:0;padding:22px 0;text-align:left;font-size:17px;font-weight:700;color:var(--ink-900);}
.rl-faq__q:hover{color:var(--green-700);}
.rl-faq__icon{position:relative;flex:0 0 auto;width:16px;height:16px;}
.rl-faq__icon::before,.rl-faq__icon::after{content:"";position:absolute;background:var(--green-700);border-radius:2px;transition:transform .18s ease;}
.rl-faq__icon::before{left:0;top:7px;width:16px;height:2px;}
.rl-faq__icon::after{left:7px;top:0;width:2px;height:16px;}
.rl-faq__item.is-open .rl-faq__icon::after{transform:scaleY(0);}
.rl-faq__a{max-height:0;overflow:hidden;transition:max-height .18s ease;}
.rl-faq__a p{font-size:15px;line-height:1.8;color:var(--ink-600);padding:0 40px 22px 0;}
/* cta */
.rl-cta{background:var(--green-900);border:1px solid var(--brass-500);border-radius:var(--r-card);padding:48px 40px;color:var(--text-light);text-align:left;}
.rl-cta h2{color:var(--text-light);max-width:22em;}
.rl-cta p{color:var(--text-muted);margin-top:14px;max-width:34em;font-size:15px;}
.rl-cta__actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px;}
.rl-cta small{display:block;margin-top:20px;color:var(--brass-500);font-size:13px;font-family:var(--ff-num);letter-spacing:.04em;}
/* footer */
.rl-footer{background:var(--green-900);color:var(--text-muted);margin-top:0;padding:60px 0 0;}
.rl-footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
.rl-footer__col{padding-left:32px;border-left:1px solid var(--line-dark);}
.rl-footer__col:first-child{padding-left:0;border-left:0;}
.rl-footer h4{color:var(--text-light);font-size:15px;margin-bottom:16px;font-weight:700;}
.rl-footer__brand{color:var(--text-light);font-size:19px;font-weight:700;margin-bottom:12px;}
.rl-footer p{font-size:14px;line-height:1.7;}
.rl-footer li{margin-bottom:10px;}
.rl-footer a{color:var(--text-muted);font-size:14px;}
.rl-footer a:hover{color:var(--brass-500);}
.rl-footer__spec{font-family:var(--ff-num);font-size:13px;color:var(--brass-500);margin-top:14px;letter-spacing:.04em;}
.rl-footer__bottom{border-top:1px solid var(--line-dark);margin-top:44px;padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--ink-300);}
/* responsive */
@media screen and (min-width:1024px){
  .grid-container{padding-left:32px;padding-right:32px;}
  .rl-section{padding:96px 0;}
  .rl-section--tight{padding:72px 0;}
  .rl-hero__inner{padding:96px 0 104px;}
  .rl-hero__shot img{aspect-ratio:3/2;}
}
@media screen and (max-width:1023px){
  .rl-nav{position:fixed;top:64px;left:0;right:0;background:var(--bg-alt);border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start;gap:0;padding:8px 20px 24px;transform:translateY(-8px);opacity:0;pointer-events:none;transition:opacity .18s ease,transform .18s ease;max-height:calc(100vh - 64px);overflow-y:auto;}
  .rl-nav.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .rl-nav__list{flex-direction:column;align-items:stretch;width:100%;}
  .rl-nav__list li{padding:0;}
  .rl-nav__list li+li::before{display:none;}
  .rl-nav__list a{display:block;padding:14px 0;border-bottom:1px solid var(--line);font-size:16px;}
  .rl-nav__list a::after{display:none;}
  .rl-nav__list a.is-active{color:var(--green-700);}
  .rl-nav__list a.is-active::before{display:none;}
  .rl-nav__cta{margin-top:18px;width:100%;}
  .rl-burger{display:flex;}
  .rl-posts{grid-template-columns:repeat(2,1fr);}
  .rl-stats{grid-template-columns:repeat(2,1fr);}
  .rl-footer__grid{grid-template-columns:1fr 1fr;}
  .rl-footer__col{padding-left:0;border-left:0;border-top:1px solid var(--line-dark);padding-top:24px;}
  .rl-footer__col:first-child{border-top:0;padding-top:0;}
}
@media screen and (max-width:639px){
  .rl-hero__meta div{padding:0 14px;}
  .rl-hero__meta dd{font-size:14px;}
  .rl-progress{padding:28px 20px;}
  .rl-progress__stages{grid-template-columns:1fr;gap:18px;}
  .rl-posts{grid-template-columns:1fr;}
  .rl-stats{grid-template-columns:1fr 1fr;gap:16px;}
  .rl-step{gap:14px;}
  .rl-step__num{font-size:32px;min-width:52px;}
  .rl-rail__item{flex:0 0 82%;}
  .rl-cta{padding:32px 22px;}
  .rl-footer__grid{grid-template-columns:1fr;}
}

/* roulang page: article */
:root{
  --ink-900:#14211C;
  --ink-600:#55635C;
  --ink-300:#8C9791;
  --green-900:#0E3B32;
  --green-700:#14513F;
  --green-400:#2E7C61;
  --brass-500:#C8A45C;
  --brass-200:#EADFC2;
  --card-red:#B22B33;
  --bg:#F7F5EF;
  --bg-alt:#FFFFFF;
  --line:#E4DFD3;
  --line-dark:rgba(200,164,92,.32);
  --light-1:#F3F1E9;
  --light-2:#C9CFC9;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(14,59,50,.06);
  --shadow-2:0 14px 34px -14px rgba(14,59,50,.22);
  --shell:1200px;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-num:"Inter",ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.78;
  color:var(--ink-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--green-700);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
a:hover{color:var(--green-400);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:1.25em;}
:focus-visible{outline:2px solid var(--brass-500);outline-offset:2px;}
.grid-container{max-width:var(--shell);margin:0 auto;padding:0 20px;width:100%;}
@media (min-width:768px){.grid-container{padding:0 24px;}}
@media (min-width:1200px){.grid-container{padding:0 32px;}}

/* ---------- Header ---------- */
.rl-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,239,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.rl-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px -18px rgba(14,59,50,.6);
}
.rl-header__inner{
  max-width:var(--shell);
  margin:0 auto;
  padding:0 20px;
  height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
@media (min-width:768px){.rl-header__inner{padding:0 24px;}}
@media (min-width:1200px){.rl-header__inner{padding:0 32px;}}
.rl-logo{display:inline-flex;align-items:center;gap:9px;color:var(--ink-900);}
.rl-logo__mark{
  width:26px;height:26px;border-radius:8px;
  background:var(--green-900);color:var(--brass-500);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;line-height:1;
}
.rl-logo__text{font-weight:700;font-size:17px;letter-spacing:-.01em;}
.rl-logo:hover .rl-logo__text{color:var(--green-700);}
.rl-nav{display:flex;align-items:center;gap:22px;}
.rl-nav__list{
  list-style:none;margin:0;padding:0;
  display:flex;align-items:center;gap:0;
}
.rl-nav__list li{position:relative;}
.rl-nav__list li + li{border-left:1px solid var(--line);}
.rl-nav__list a{
  display:inline-block;
  padding:8px 14px;
  font-size:15px;
  color:var(--ink-600);
  position:relative;
  line-height:1.4;
}
.rl-nav__list a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;
  height:2px;background:var(--brass-500);
  transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.rl-nav__list a:hover{color:var(--ink-900);}
.rl-nav__list a:hover::after{transform:scaleX(1);}
.rl-nav__list a.is-active{color:var(--ink-900);font-weight:600;}
.rl-nav__list a.is-active::after{transform:scaleX(1);}
.rl-nav__list a.is-active::before{
  content:"";position:absolute;left:50%;top:1px;margin-left:-2px;
  width:4px;height:4px;border-radius:50%;background:var(--brass-500);
}
.rl-btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 20px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.rl-btn--primary{background:var(--green-700);color:var(--light-1);}
.rl-btn--primary:hover{background:var(--green-400);color:#fff;transform:translateY(-1px);}
.rl-btn--primary:active{transform:none;}
.rl-btn--ghost{background:transparent;border-color:var(--green-700);color:var(--green-700);}
.rl-btn--ghost:hover{background:var(--brass-200);border-color:var(--brass-500);color:var(--green-700);}
.rl-btn--dark{background:var(--brass-500);color:var(--ink-900);}
.rl-btn--dark:hover{background:#D8B76E;color:var(--ink-900);transform:translateY(-1px);}
.rl-nav__cta{min-height:40px;padding:0 18px;}
.rl-burger{
  display:none;width:44px;height:44px;
  border:1px solid var(--line);border-radius:10px;
  background:var(--bg-alt);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  cursor:pointer;
}
.rl-burger span{display:block;width:18px;height:2px;background:var(--ink-900);transition:transform .18s ease,opacity .18s ease;}
.rl-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.rl-burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.rl-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
@media (max-width:1023px){
  .rl-burger{display:flex;}
  .rl-nav{
    position:fixed;left:0;right:0;top:64px;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--bg-alt);
    border-bottom:1px solid var(--line);
    padding:8px 20px 22px;
    transform:translateY(-12px);
    opacity:0;visibility:hidden;
    transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
    max-height:calc(100vh - 64px);
    overflow-y:auto;
  }
  .rl-nav.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .rl-nav__list{flex-direction:column;align-items:stretch;}
  .rl-nav__list li + li{border-left:0;border-top:1px solid var(--line);}
  .rl-nav__list a{display:block;padding:14px 4px;font-size:16px;}
  .rl-nav__list a::after{left:4px;right:auto;width:34px;bottom:6px;}
  .rl-nav__list a.is-active::before{left:auto;right:6px;top:50%;margin-top:-2px;}
  .rl-nav__cta{margin-top:16px;width:100%;}
}

/* ---------- Article head ---------- */
.rl-article-head{
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
  padding:28px 0 34px;
}
@media (min-width:1024px){.rl-article-head{padding:36px 0 46px;}}
.rl-crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-300);
  margin-bottom:18px;
}
.rl-crumb a{color:var(--ink-600);border-bottom:1px solid transparent;}
.rl-crumb a:hover{color:var(--green-700);border-bottom-color:var(--brass-500);}
.rl-crumb__sep{color:var(--line);}
.rl-crumb__now{color:var(--ink-600);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.rl-article-head h1{
  font-size:clamp(28px,5vw,46px);
  line-height:1.22;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--ink-900);
  margin:14px 0 0;
  overflow-wrap:break-word;
}
.rl-article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:18px;
  font-size:13px;color:var(--ink-300);
}
.rl-article-meta > span{display:inline-flex;align-items:center;}
.rl-article-meta > span + span{padding-left:14px;border-left:1px solid var(--line);}
.rl-article-meta .rl-num{font-family:var(--font-num);letter-spacing:.04em;}
.rl-badge{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:999px;
  padding:4px 12px;
  font-size:12px;font-weight:600;line-height:1.6;
}
.rl-badge--cat{background:#E7EFEA;color:var(--green-700);}
.rl-badge--brass{background:var(--brass-200);color:#6E5420;}

/* ---------- Article shell ---------- */
.rl-article-wrap{padding:32px 0 64px;}
@media (min-width:1024px){.rl-article-wrap{padding:48px 0 92px;}}
.rl-article-shell{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:40px;
}
@media (min-width:1024px){
  .rl-article-shell{grid-template-columns:minmax(0,820px) 280px;justify-content:center;gap:56px;}
}
.rl-article-main{min-width:0;}
.rl-cover{
  margin:0 0 32px;
  border-radius:var(--radius-img);
  overflow:hidden;
  background:var(--green-900);
  border:1px solid var(--line);
  aspect-ratio:21/9;
  position:relative;
}
.rl-cover img{width:100%;height:100%;object-fit:cover;}
.rl-cover__ph{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:rgba(243,241,233,.16);
  font-size:clamp(48px,10vw,96px);font-weight:800;letter-spacing:.1em;
}

.rl-article-body{
  max-width:820px;
  min-height:320px;
  font-size:16.5px;
  line-height:1.9;
  color:#25302B;
  overflow-wrap:break-word;
  word-break:break-word;
}
.rl-article-body > *:first-child{margin-top:0;}
.rl-article-body p{margin:0 0 1.2em;}
.rl-article-body h2{
  font-size:clamp(20px,2.7vw,26px);
  line-height:1.38;
  font-weight:800;
  color:var(--ink-900);
  margin:48px 0 16px;
  padding-left:14px;
  border-left:3px solid var(--brass-500);
}
.rl-article-body h3{font-size:19px;line-height:1.45;font-weight:700;color:var(--ink-900);margin:32px 0 12px;}
.rl-article-body h4{font-size:17px;font-weight:700;color:var(--ink-900);margin:24px 0 10px;}
.rl-article-body ul,.rl-article-body ol{margin:0 0 1.2em;padding-left:1.35em;}
.rl-article-body li{margin:.4em 0;}
.rl-article-body li::marker{color:var(--green-700);}
.rl-article-body blockquote{
  margin:26px 0;padding:16px 20px;
  background:#EBF1ED;
  border-left:3px solid var(--green-700);
  border-radius:0 10px 10px 0;
  color:var(--ink-600);
  font-size:15.5px;
}
.rl-article-body blockquote p:last-child{margin-bottom:0;}
.rl-article-body table{
  width:100%;max-width:100%;
  border-collapse:collapse;
  margin:26px 0;font-size:15px;
  display:block;overflow-x:auto;
}
.rl-article-body th,.rl-article-body td{border:1px solid var(--line);padding:10px 13px;text-align:left;vertical-align:top;}
.rl-article-body th{background:var(--brass-200);font-weight:700;color:var(--ink-900);}
.rl-article-body img{max-width:100%;height:auto;border-radius:var(--radius-img);margin:26px auto;border:1px solid var(--line);}
.rl-article-body figure{margin:26px 0;}
.rl-article-body figcaption{font-size:14px;color:var(--ink-300);text-align:center;margin-top:10px;}
.rl-article-body a{color:var(--green-700);border-bottom:1px solid rgba(20,81,63,.35);}
.rl-article-body a:hover{color:var(--green-400);border-bottom-color:var(--green-400);}
.rl-article-body code{background:#EDF1EE;border-radius:6px;padding:2px 6px;font-size:.92em;font-family:var(--font-num);}
.rl-article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0;}
.rl-article-empty{
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  padding:56px 24px;
  text-align:center;
  background:var(--bg-alt);
}
.rl-article-empty h2{font-size:20px;font-weight:800;margin-bottom:10px;border:0;padding:0;}
.rl-article-empty p{color:var(--ink-600);font-size:15px;margin-bottom:20px;}

.rl-article-foot{
  margin-top:44px;padding-top:26px;
  border-top:1px solid var(--line);
}
.rl-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.rl-tags .rl-badge{background:var(--bg-alt);border:1px solid var(--line);color:var(--ink-600);font-weight:500;}
.rl-article-foot-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

.rl-side{display:none;}
@media (min-width:1024px){
  .rl-side{display:block;}
  .rl-side__sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
}
.rl-side-card{
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:20px;
  box-shadow:var(--shadow-1);
}
.rl-side-card h3{
  font-size:13px;font-weight:700;letter-spacing:.16em;
  color:var(--ink-300);
  margin-bottom:14px;
}
.rl-toc{list-style:none;margin:0;padding:0;}
.rl-toc li{margin:0;border-top:1px solid var(--line);}
.rl-toc li:first-child{border-top:0;}
.rl-toc a{
  display:block;padding:10px 0;
  font-size:14px;color:var(--ink-600);line-height:1.6;
}
.rl-toc a:hover{color:var(--green-700);}
.rl-side-links{list-style:none;margin:0;padding:0;}
.rl-side-links li{border-top:1px solid var(--line);}
.rl-side-links li:first-child{border-top:0;}
.rl-side-links a{display:block;padding:11px 0;font-size:14px;color:var(--ink-600);}
.rl-side-links a:hover{color:var(--green-700);}
.rl-side-links a::before{content:"→";color:var(--brass-500);margin-right:8px;font-size:13px;}

/* ---------- Related ---------- */
.rl-related{padding:0 0 80px;}
@media (min-width:1024px){.rl-related{padding:0 0 104px;}}
.rl-related__head{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:12px;
  margin-bottom:26px;
}
.rl-related__head h2{font-size:clamp(22px,3.2vw,30px);font-weight:800;line-height:1.3;}
.rl-related__grid{
  display:grid;grid-template-columns:1fr;gap:22px;
}
@media (min-width:640px){.rl-related__grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.rl-related__grid{grid-template-columns:repeat(3,1fr);}}
.rl-card{
  position:relative;
  display:flex;flex-direction:column;
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rl-card::before{
  content:"";position:absolute;top:0;left:0;
  width:3px;height:26px;background:var(--brass-500);
  border-radius:0 0 3px 0;z-index:2;
}
.rl-card:hover{transform:translateY(-2px);border-color:var(--brass-500);box-shadow:var(--shadow-2);}
.rl-card__media{aspect-ratio:16/9;overflow:hidden;background:var(--green-900);}
.rl-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.rl-card:hover .rl-card__media img{transform:scale(1.03);}
.rl-card__body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rl-card__title{
  font-size:16.5px;font-weight:700;line-height:1.5;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rl-card:hover .rl-card__title{color:var(--green-700);}
.rl-card__desc{
  font-size:14.5px;line-height:1.7;color:var(--ink-600);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rl-card__foot{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--ink-300);
}
.rl-card__foot .rl-num{font-family:var(--font-num);letter-spacing:.04em;}
.rl-card__more{font-size:13px;font-weight:600;color:var(--green-700);}
.rl-card__more::after{content:"→";margin-left:5px;color:var(--brass-500);}

/* ---------- CTA ---------- */
.rl-cta{
  background:var(--green-900);
  border-top:1px solid var(--line-dark);
  border-bottom:1px solid var(--line-dark);
  padding:56px 0;
}
@media (min-width:1024px){.rl-cta{padding:88px 0;}}
.rl-cta__box{
  border:1px solid var(--line-dark);
  border-radius:var(--radius-card);
  padding:32px 26px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
@media (min-width:1024px){.rl-cta__box{padding:44px;}}
.rl-cta__box h2{
  font-size:clamp(22px,3.2vw,30px);font-weight:800;line-height:1.32;color:var(--light-1);
  margin-bottom:10px;
}
.rl-cta__box p{color:var(--light-2);font-size:15px;max-width:520px;}
.rl-cta__note{margin-top:12px;font-size:13px;color:rgba(201,207,201,.75);font-family:var(--font-num);letter-spacing:.04em;}

/* ---------- Footer ---------- */
.rl-footer{background:var(--green-900);color:var(--light-2);padding:56px 0 26px;}
@media (min-width:1024px){.rl-footer{padding:72px 0 30px;}}
.rl-footer__grid{
  display:grid;grid-template-columns:1fr;gap:30px;
  padding-bottom:34px;
  border-bottom:1px solid var(--line-dark);
}
@media (min-width:640px){.rl-footer__grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.rl-footer__grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:0;}}
@media (min-width:1024px){
  .rl-footer__col{padding:0 26px;border-left:1px solid var(--line-dark);}
  .rl-footer__col:first-child{padding-left:0;border-left:0;}
}
.rl-footer__brand{color:var(--light-1);font-weight:700;font-size:17px;margin-bottom:10px;}
.rl-footer__col p{font-size:14px;line-height:1.75;color:var(--light-2);}
.rl-footer__spec{margin-top:12px;font-size:12.5px;color:rgba(201,207,201,.72);font-family:var(--font-num);letter-spacing:.04em;}
.rl-footer__col h4{font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--brass-500);margin-bottom:14px;}
.rl-footer__col ul{list-style:none;margin:0;padding:0;}
.rl-footer__col li{margin-bottom:10px;}
.rl-footer__col a{font-size:14.5px;color:var(--light-2);}
.rl-footer__col a:hover{color:var(--brass-500);}
.rl-footer__bottom{
  padding-top:22px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(201,207,201,.75);
}
@media (max-width:520px){
  .rl-nav__list a{font-size:15px;}
  .rl-article-head h1{font-size:26px;}
  .rl-cta__box{padding:26px 20px;}
}

/* roulang page: category1 */
:root{
  --ink-900:#14211C;
  --ink-600:#55635C;
  --ink-300:#8C9791;
  --green-900:#0E3B32;
  --green-700:#14513F;
  --green-400:#2E7C61;
  --brass-500:#C8A45C;
  --brass-200:#EADFC2;
  --card-red:#B22B33;
  --bg:#F7F5EF;
  --bg-alt:#FFFFFF;
  --line:#E4DFD3;
  --line-dark:rgba(200,164,92,.32);
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(14,59,50,.06);
  --shadow-2:0 14px 34px -14px rgba(14,59,50,.22);
  --font-sans:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:"Inter",ui-monospace,"DIN Alternate",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.78;
  color:var(--ink-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:var(--green-700);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.3;letter-spacing:-.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--brass-500);outline-offset:2px}
.rl-container{max-width:1200px;margin:0 auto;padding:0 32px}
.rl-eyebrow{
  font-size:13px;letter-spacing:.18em;font-weight:600;color:var(--green-400);
  text-transform:uppercase;margin-bottom:14px;
}
.rl-num{font-family:var(--font-mono);letter-spacing:.04em}

/* ---------- header ---------- */
.rl-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,239,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .18s ease,background-color .18s ease;
}
.rl-header.is-scrolled{border-bottom-color:var(--line);background:rgba(247,245,239,.95)}
.rl-header__inner{
  max-width:1200px;margin:0 auto;padding:0 32px;
  height:64px;display:flex;align-items:center;gap:24px;
}
.rl-logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900)}
.rl-logo__mark{
  width:30px;height:30px;border-radius:9px;background:var(--green-900);
  color:var(--brass-500);display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;flex:none;
}
.rl-logo__text{font-weight:700;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.rl-nav{display:flex;align-items:center;gap:24px;flex:1;justify-content:flex-end}
.rl-nav__list{display:flex;align-items:center;margin:0}
.rl-nav__list li{padding:0 16px;border-left:1px solid var(--line)}
.rl-nav__list li:first-child{border-left:0;padding-left:0}
.rl-nav__list li:last-child{padding-right:0}
.rl-nav__list a{
  position:relative;display:inline-block;padding:22px 0 20px;
  font-size:15px;color:var(--ink-600);white-space:nowrap;
}
.rl-nav__list a::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  background:var(--brass-500);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.rl-nav__list a:hover{color:var(--green-700)}
.rl-nav__list a:hover::after{transform:scaleX(1)}
.rl-nav__list a.is-active{color:var(--green-700);font-weight:600}
.rl-nav__list a.is-active::after{transform:scaleX(1)}
.rl-nav__list a.is-active::before{
  content:"";position:absolute;left:50%;bottom:8px;width:5px;height:5px;border-radius:50%;
  background:var(--brass-500);transform:translateX(-50%);
}
.rl-burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:var(--bg-alt);flex-direction:column;align-items:center;justify-content:center;gap:5px;
  flex:none;
}
.rl-burger span{display:block;width:18px;height:2px;background:var(--green-700);border-radius:2px;transition:transform .18s ease,opacity .18s ease}
.rl-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.rl-burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.rl-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- buttons ---------- */
.rl-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.rl-btn--primary{background:var(--green-700);color:#F3F1E9}
.rl-btn--primary:hover{background:var(--green-400);color:#F3F1E9;transform:translateY(-1px)}
.rl-btn--primary:active{transform:none}
.rl-btn--ghost{background:transparent;border-color:var(--green-700);color:var(--green-700)}
.rl-btn--ghost:hover{background:var(--brass-200);border-color:var(--brass-500);color:var(--green-900)}
.rl-btn--brass{background:var(--brass-500);color:var(--ink-900)}
.rl-btn--brass:hover{background:#D8B76F;transform:translateY(-1px)}
.rl-btn--onDark{background:transparent;border-color:rgba(243,241,233,.5);color:#F3F1E9}
.rl-btn--onDark:hover{border-color:var(--brass-500);color:var(--brass-500)}
.rl-nav__cta{min-height:38px;padding:0 18px;font-size:14.5px}

/* ---------- page head band ---------- */
.rl-pagehead{
  background:var(--bg-alt);
  border-bottom:1px solid var(--line);
  padding:36px 0 40px;
}
.rl-crumb{font-size:13px;color:var(--ink-300);margin-bottom:20px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.rl-crumb a{color:var(--ink-600)}
.rl-crumb a:hover{color:var(--green-700);text-decoration:underline}
.rl-crumb span.sep{color:var(--line)}
.rl-crumb .current{color:var(--ink-600)}
.rl-pagehead h1{
  font-size:clamp(28px,4vw,42px);line-height:1.24;max-width:900px;
  border-left:3px solid var(--brass-500);padding-left:18px;
}
.rl-pagehead__sub{margin-top:16px;color:var(--ink-600);font-size:15.5px;max-width:760px}
.rl-metarow{
  margin-top:24px;display:flex;flex-wrap:wrap;gap:0;
  border-top:1px solid var(--line);padding-top:18px;
}
.rl-metarow div{
  padding:0 22px;border-left:1px solid var(--line);
  display:flex;flex-direction:column;gap:2px;
}
.rl-metarow div:first-child{border-left:0;padding-left:0}
.rl-metarow dt,.rl-metarow .k{font-size:12px;color:var(--ink-300);letter-spacing:.08em}
.rl-metarow .v{font-family:var(--font-mono);font-size:15px;font-weight:600;color:var(--green-700);letter-spacing:.04em}

/* ---------- sections ---------- */
.rl-section{padding:88px 0}
.rl-section--tight{padding:64px 0}
.rl-section--alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.rl-sechead{margin-bottom:40px;max-width:760px}
.rl-sechead h2{font-size:clamp(24px,3.4vw,32px)}
.rl-sechead p{margin-top:14px;color:var(--ink-600);font-size:15.5px}

/* ---------- doc layout: sticky toc + list ---------- */
.rl-doc{display:grid;grid-template-columns:264px minmax(0,1fr);gap:48px;align-items:start}
.rl-doc__side{position:sticky;top:88px}
.rl-toc{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 22px 24px;box-shadow:var(--shadow-1);
}
.rl-toc h3{font-size:13px;letter-spacing:.16em;color:var(--green-400);font-weight:600;margin-bottom:14px}
.rl-toc ol{counter-reset:toc}
.rl-toc li{border-top:1px solid var(--line)}
.rl-toc li:first-child{border-top:0}
.rl-toc a{
  display:flex;gap:10px;align-items:baseline;padding:11px 0;font-size:14.5px;color:var(--ink-600);
}
.rl-toc a:hover{color:var(--green-700)}
.rl-toc a .idx{font-family:var(--font-mono);font-size:12.5px;color:var(--brass-500);letter-spacing:.04em}
.rl-toc__note{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-300);line-height:1.7;
}
.rl-doc__lead{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 24px;margin-bottom:8px;color:var(--ink-600);font-size:15px;box-shadow:var(--shadow-1);
}
.rl-doc__lead strong{color:var(--ink-900)}

/* ---------- step list ---------- */
.rl-steps{counter-reset:step;margin-top:24px}
.rl-step{
  position:relative;padding:34px 0 34px 74px;border-top:1px solid var(--line);
}
.rl-step:first-child{border-top:0;padding-top:8px}
.rl-step__num{
  position:absolute;left:0;top:34px;
  font-family:var(--font-mono);font-size:38px;font-weight:700;line-height:1;
  color:var(--brass-500);letter-spacing:.02em;
}
.rl-step:first-child .rl-step__num{top:8px}
.rl-step__head{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:12px}
.rl-step__head h3{font-size:20px}
.rl-step__body p{color:var(--ink-600);font-size:15.5px;max-width:760px}
.rl-step__media{margin-top:18px;max-width:560px}
.rl-step__media img{width:100%;aspect-ratio:2/1;object-fit:cover;border:1px solid var(--line)}
.rl-step__media figcaption{margin-top:10px;font-size:13px;color:var(--ink-300)}
.rl-ticks{margin-top:14px;display:grid;gap:8px}
.rl-ticks li{position:relative;padding-left:20px;font-size:14.5px;color:var(--ink-600)}
.rl-ticks li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--green-400);
}

/* ---------- badges ---------- */
.rl-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
}
.rl-badge--green{background:#E3EFE8;color:var(--green-700)}
.rl-badge--brass{background:var(--brass-200);color:#7A5C1E}
.rl-badge--warn{background:#F7E2E3;color:var(--card-red)}

/* ---------- requirement compare ---------- */
.rl-req{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:8px}
.rl-req__card{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;position:relative;
}
.rl-req__card::before{
  content:"";position:absolute;left:0;top:0;width:3px;height:26px;
  background:var(--brass-500);border-radius:0 3px 3px 0;
}
.rl-req__card h3{font-size:18px;margin-bottom:6px;padding-left:14px}
.rl-req__card .cap{font-size:13px;color:var(--ink-300);margin-bottom:16px;padding-left:14px}
.rl-req__rows li{
  display:flex;justify-content:space-between;gap:16px;padding:11px 0;
  border-top:1px solid var(--line);font-size:14.5px;
}
.rl-req__rows li:first-child{border-top:0}
.rl-req__rows .k{color:var(--ink-600)}
.rl-req__rows .v{font-family:var(--font-mono);color:var(--green-700);font-weight:600;letter-spacing:.03em;text-align:right}
.rl-data{
  margin-top:28px;background:var(--green-900);border-radius:var(--radius-card);
  border:1px solid var(--line-dark);padding:26px 28px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.rl-data__item{border-left:1px solid var(--line-dark);padding-left:20px}
.rl-data__item:first-child{border-left:0;padding-left:0}
.rl-data__item .k{font-size:12px;color:#C9CFC9;letter-spacing:.1em;margin-bottom:6px}
.rl-data__item .v{font-family:var(--font-mono);font-size:22px;font-weight:700;color:var(--brass-500);letter-spacing:.04em}

/* ---------- faq ---------- */
.rl-faq{border-top:1px solid var(--line);margin-top:8px}
.rl-faq__item{border-bottom:1px solid var(--line)}
.rl-faq__q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  background:none;border:0;text-align:left;padding:22px 0;
  font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.5;
}
.rl-faq__q:hover{color:var(--green-700)}
.rl-faq__icon{
  position:relative;flex:none;width:14px;height:14px;margin-top:6px;
}
.rl-faq__icon::before,.rl-faq__icon::after{
  content:"";position:absolute;background:var(--green-700);border-radius:2px;transition:transform .18s ease,opacity .18s ease;
}
.rl-faq__icon::before{left:0;top:6px;width:14px;height:2px}
.rl-faq__icon::after{left:6px;top:0;width:2px;height:14px}
.rl-faq__item.is-open .rl-faq__icon::after{transform:scaleY(0);opacity:0}
.rl-faq__a{max-height:0;overflow:hidden;transition:max-height .18s ease}
.rl-faq__a p{padding:0 0 24px;font-size:15px;line-height:1.8;color:var(--ink-600);max-width:820px}
.rl-faq__item.is-open .rl-faq__a{max-height:420px}

/* ---------- cross links ---------- */
.rl-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rl-card{
  display:block;background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);position:relative;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  color:var(--ink-900);
}
.rl-card::before{
  content:"";position:absolute;left:0;top:0;width:3px;height:26px;background:var(--brass-500);z-index:2;
}
.rl-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brass-500)}
.rl-card__media{overflow:hidden}
.rl-card__media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .3s ease}
.rl-card:hover .rl-card__media img{transform:scale(1.03)}
.rl-card__body{padding:20px 22px 22px}
.rl-card__body h3{font-size:17px;margin-bottom:8px}
.rl-card:hover .rl-card__body h3{color:var(--green-700)}
.rl-card__body p{font-size:14.5px;color:var(--ink-600);line-height:1.7}
.rl-card__more{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13px;color:var(--green-700);font-weight:600;
}
.rl-card__more::after{content:"→";font-family:var(--font-mono);transition:transform .18s ease}
.rl-card:hover .rl-card__more::after{transform:translateX(3px)}

/* ---------- CTA ---------- */
.rl-cta{
  background:var(--green-900);border-top:1px solid var(--line-dark);border-bottom:1px solid var(--line-dark);
  padding:72px 0;
}
.rl-cta__box{
  border:1px solid var(--line-dark);border-radius:var(--radius-card);
  padding:44px 40px;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;
}
.rl-cta__box h2{color:#F3F1E9;font-size:clamp(22px,3vw,30px);max-width:640px}
.rl-cta__box p{color:#C9CFC9;margin-top:12px;font-size:15px}
.rl-cta__actions{display:flex;flex-wrap:wrap;gap:14px}
.rl-cta__spec{margin-top:22px;font-size:13px;color:#C9CFC9;letter-spacing:.02em}

/* ---------- footer ---------- */
.rl-footer{background:var(--green-900);color:#C9CFC9;padding:64px 0 26px;font-size:14.5px}
.rl-footer .grid-container{max-width:1200px;padding:0 32px}
.rl-footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:0}
.rl-footer__col{padding:0 26px;border-left:1px solid var(--line-dark)}
.rl-footer__col:first-child{border-left:0;padding-left:0}
.rl-footer__col:last-child{padding-right:0}
.rl-footer__brand{color:#F3F1E9;font-weight:700;font-size:17px;margin-bottom:12px}
.rl-footer__col p{margin:0 0 12px;line-height:1.75;font-size:14px}
.rl-footer__spec{font-family:var(--font-mono);font-size:12.5px;color:var(--brass-500);letter-spacing:.04em}
.rl-footer h4{color:#F3F1E9;font-size:14px;letter-spacing:.06em;margin-bottom:16px;font-weight:700}
.rl-footer__col ul li{margin-bottom:11px}
.rl-footer a{color:#C9CFC9;font-size:14px}
.rl-footer a:hover{color:var(--brass-500);text-decoration:underline}
.rl-footer__bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8FA09A;
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .rl-doc{grid-template-columns:230px minmax(0,1fr);gap:36px}
  .rl-data{grid-template-columns:repeat(2,1fr);gap:24px}
  .rl-data__item:nth-child(3){border-left:0;padding-left:0}
}
@media (max-width:1023px){
  .rl-container{padding:0 24px}
  .rl-header__inner{padding:0 24px;height:56px}
  .rl-burger{display:inline-flex;margin-left:auto}
  .rl-nav{position:absolute;left:0;right:0;top:56px;display:block;background:transparent;pointer-events:none}
  .rl-nav__list{
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:var(--bg-alt);border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-1);pointer-events:auto;
  }
  .rl-nav.is-open .rl-nav__list{display:flex}
  .rl-nav__list li{border-left:0;border-top:1px solid var(--line);padding:0 24px}
  .rl-nav__list li:first-child{border-top:0;padding-left:24px}
  .rl-nav__list li:last-child{padding-right:24px}
  .rl-nav__list a{display:block;padding:15px 0;font-size:15.5px}
  .rl-nav__list a::after{display:none}
  .rl-nav__list a.is-active{color:var(--green-700)}
  .rl-nav__list a.is-active::before{display:none}
  .rl-nav__cta{display:none}
  .rl-section{padding:64px 0}
  .rl-doc{grid-template-columns:minmax(0,1fr);gap:32px}
  .rl-doc__side{position:static}
  .rl-req{grid-template-columns:1fr}
  .rl-cards{grid-template-columns:repeat(2,1fr)}
  .rl-footer .grid-container{padding:0 24px}
  .rl-footer__grid{grid-template-columns:1fr 1fr;gap:32px}
  .rl-footer__col{border-left:0;padding:0}
  .rl-cta__box{padding:32px 26px}
}
@media (max-width:639px){
  .rl-container{padding:0 20px}
  .rl-header__inner{padding:0 20px}
  .rl-logo__text{font-size:16px}
  .rl-pagehead{padding:28px 0 32px}
  .rl-pagehead h1{padding-left:14px;font-size:28px}
  .rl-metarow div{padding:0 14px}
  .rl-metarow .v{font-size:14px}
  .rl-section{padding:56px 0}
  .rl-step{padding:28px 0 28px 0}
  .rl-step__num{position:static;display:block;font-size:30px;margin-bottom:10px}
  .rl-step:first-child .rl-step__num{top:auto}
  .rl-step__head h3{font-size:18px}
  .rl-cards{grid-template-columns:1fr}
  .rl-data{grid-template-columns:1fr;padding:22px}
  .rl-data__item{border-left:0;padding-left:0;border-top:1px solid var(--line-dark);padding-top:14px}
  .rl-data__item:first-child{border-top:0;padding-top:0}
  .rl-footer__grid{grid-template-columns:1fr}
  .rl-footer{padding:48px 0 22px}
  .rl-cta__box{padding:26px 20px}
  .rl-faq__q{font-size:16px;padding:18px 0}
}

/* roulang page: category2 */
:root{
  --ink-900:#14211C;
  --ink-600:#55635C;
  --ink-300:#8C9791;
  --green-900:#0E3B32;
  --green-700:#14513F;
  --green-400:#2E7C61;
  --brass-500:#C8A45C;
  --brass-200:#EADFC2;
  --card-red:#B22B33;
  --bg:#F7F5EF;
  --bg-alt:#FFFFFF;
  --line:#E4DFD3;
  --line-dark:rgba(200,164,92,.32);
  --light-1:#F3F1E9;
  --light-2:#C9CFC9;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(14,59,50,.06);
  --shadow-2:0 14px 34px -14px rgba(14,59,50,.22);
  --font-sans:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Inter",ui-monospace,"DIN Alternate","SFMono-Regular",monospace;
  --w:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.78;
  color:var(--ink-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--green-700);text-decoration:none;transition:color .18s ease,border-color .18s ease;}
a:hover{color:var(--green-400);}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--brass-500);outline-offset:2px;}

.grid-container{max-width:var(--w);padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto;}
@media (min-width:640px){.grid-container{padding-left:24px;padding-right:24px;}}
@media (min-width:1200px){.grid-container{max-width:1240px;padding-left:32px;padding-right:32px;}}

.rl-eyebrow{
  font-size:13px;letter-spacing:.18em;font-weight:600;color:var(--brass-500);
  text-transform:uppercase;margin-bottom:14px;display:block;
}
.rl-num{font-family:var(--font-num);letter-spacing:.04em;}

/* ---------- Header ---------- */
.rl-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,239,.86);
  border-bottom:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.rl-header.is-scrolled{
  background:rgba(247,245,239,.92);
  border-bottom-color:var(--line);
  backdrop-filter:saturate(140%) blur(8px);
  -webkit-backdrop-filter:saturate(140%) blur(8px);
  box-shadow:0 6px 18px -16px rgba(14,59,50,.5);
}
.rl-header__inner{
  max-width:1240px;margin:0 auto;padding:0 20px;height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
@media (min-width:640px){.rl-header__inner{padding:0 24px;}}
@media (min-width:1024px){.rl-header__inner{height:64px;padding:0 32px;}}
.rl-logo{display:flex;align-items:center;gap:9px;color:var(--ink-900);font-weight:700;letter-spacing:-.02em;}
.rl-logo:hover{color:var(--ink-900);}
.rl-logo__mark{
  width:28px;height:28px;border-radius:8px;background:var(--green-900);
  color:var(--brass-500);display:flex;align-items:center;justify-content:center;
  font-size:15px;line-height:1;flex:0 0 auto;
}
.rl-logo__text{font-size:17px;}
.rl-nav{display:flex;align-items:center;gap:28px;}
.rl-nav__list{display:flex;align-items:center;}
.rl-nav__list li{position:relative;}
.rl-nav__list li + li{margin-left:18px;padding-left:18px;border-left:1px solid var(--line);}
.rl-nav__list a{
  position:relative;display:inline-block;padding:6px 0;font-size:15px;color:var(--ink-600);
}
.rl-nav__list a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--brass-500);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.rl-nav__list a:hover{color:var(--ink-900);}
.rl-nav__list a:hover::after{transform:scaleX(1);}
.rl-nav__list a.is-active{color:var(--ink-900);font-weight:700;}
.rl-nav__list a.is-active::after{transform:scaleX(1);}
.rl-nav__cta{white-space:nowrap;}
.rl-burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:var(--bg-alt);padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.rl-burger span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform .18s ease,opacity .18s ease;}
.rl-burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.rl-burger.is-open span:nth-child(2){opacity:0;}
.rl-burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

@media (max-width:1023px){
  .rl-burger{display:flex;}
  .rl-nav{
    position:fixed;left:0;right:0;top:56px;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--bg-alt);
    border-bottom:1px solid var(--line);
    box-shadow:0 20px 40px -24px rgba(14,59,50,.4);
    padding:8px 20px 20px;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
    max-height:calc(100vh - 56px);overflow-y:auto;
  }
  .rl-nav.is-open{opacity:1;visibility:visible;transform:none;}
  .rl-nav__list{flex-direction:column;align-items:stretch;}
  .rl-nav__list li + li{margin-left:0;padding-left:0;border-left:0;border-top:1px solid var(--line);}
  .rl-nav__list a{display:block;padding:14px 0;font-size:16px;}
  .rl-nav__list a::after{display:none;}
  .rl-nav__list a.is-active{color:var(--green-700);}
  .rl-nav__cta{margin-top:16px;width:100%;text-align:center;}
}

/* ---------- Buttons ---------- */
.rl-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1.5px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.rl-btn--primary{background:var(--green-700);color:var(--light-1);}
.rl-btn--primary:hover{background:var(--green-400);color:#fff;transform:translateY(-1px);}
.rl-btn--primary:active{transform:none;}
.rl-btn--ghost{background:transparent;border-color:var(--green-700);color:var(--green-700);}
.rl-btn--ghost:hover{background:var(--brass-200);border-color:var(--brass-500);color:var(--green-900);}
.rl-btn--brass{background:var(--brass-500);color:var(--ink-900);}
.rl-btn--brass:hover{background:#d5b473;color:var(--ink-900);transform:translateY(-1px);}
.rl-btn--outline-light{background:transparent;border-color:var(--line-dark);color:var(--light-1);}
.rl-btn--outline-light:hover{background:rgba(234,223,194,.12);color:#fff;border-color:var(--brass-500);}

/* ---------- Badges ---------- */
.rl-badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  font-size:12px;line-height:1.6;font-weight:600;background:var(--brass-200);color:#6E5620;
}
.rl-badge--cat{background:rgba(46,124,97,.12);color:var(--green-700);}
.rl-badge--warn{background:rgba(178,43,51,.1);color:var(--card-red);}

/* ---------- Page head ---------- */
.rl-pagehead{
  position:relative;background:var(--bg-alt);border-bottom:1px solid var(--line);
  padding:40px 0 36px;overflow:hidden;
}
@media (min-width:1024px){.rl-pagehead{padding:56px 0 48px;}}
.rl-pagehead::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--brass-500),transparent);opacity:.5;
}
.rl-crumb{font-size:13px;color:var(--ink-300);margin-bottom:18px;display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.rl-crumb a{color:var(--ink-600);border-bottom:1px solid transparent;}
.rl-crumb a:hover{color:var(--green-700);border-bottom-color:var(--brass-500);}
.rl-crumb span.sep{color:var(--line);}
.rl-crumb .cur{color:var(--ink-600);}
.rl-pagehead h1{
  font-size:clamp(28px,5vw,44px);line-height:1.22;font-weight:800;max-width:900px;
}
.rl-pagehead__lead{
  margin-top:14px;font-size:16px;color:var(--ink-600);max-width:720px;
}
.rl-meta-strip{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:0 0;align-items:stretch;
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--bg);overflow:hidden;
}
.rl-meta-strip__item{
  flex:1 1 160px;padding:14px 20px;border-right:1px solid var(--line);
}
.rl-meta-strip__item:last-child{border-right:0;}
.rl-meta-strip__k{font-size:12px;letter-spacing:.1em;color:var(--ink-300);display:block;margin-bottom:4px;}
.rl-meta-strip__v{font-family:var(--font-num);font-size:15px;font-weight:600;color:var(--green-900);}
@media (max-width:639px){
  .rl-meta-strip__item{flex:1 1 100%;border-right:0;border-bottom:1px solid var(--line);}
  .rl-meta-strip__item:last-child{border-bottom:0;}
}

/* ---------- Section ---------- */
.rl-section{padding:56px 0;}
@media (min-width:1024px){.rl-section{padding:88px 0;}}
.rl-section--tight{padding-top:44px;}
.rl-section__head{max-width:760px;margin-bottom:32px;}
.rl-section__head h2{font-size:clamp(24px,3.4vw,34px);line-height:1.3;}
.rl-section__head p{margin-top:12px;color:var(--ink-600);font-size:15.5px;}

/* ---------- Step timeline ---------- */
.rl-timeline{max-width:880px;margin:0 auto;position:relative;}
.rl-step{position:relative;padding-left:52px;padding-bottom:40px;}
.rl-step:last-child{padding-bottom:0;}
.rl-step::before{
  content:"";position:absolute;left:15px;top:38px;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--brass-500),var(--line));
}
.rl-step:last-child::before{display:none;}
@media (min-width:768px){
  .rl-step{padding-left:76px;padding-bottom:52px;}
  .rl-step::before{left:23px;}
}
.rl-step__dot{
  position:absolute;left:0;top:0;width:32px;height:32px;border-radius:50%;
  background:var(--bg-alt);border:2px solid var(--brass-500);color:var(--green-900);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:.02em;z-index:2;
}
@media (min-width:768px){.rl-step__dot{width:48px;height:48px;font-size:15px;}}
.rl-step__card{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:20px;transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
@media (min-width:768px){.rl-step__card{padding:24px;}}
.rl-step:hover .rl-step__card{border-color:var(--brass-500);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.rl-step__media{
  width:100%;aspect-ratio:2/1;border-radius:var(--radius-img);overflow:hidden;
  background:var(--green-900);border:1px solid var(--line);margin-bottom:18px;
}
.rl-step__media img{width:100%;height:100%;object-fit:cover;}
.rl-step__tagrow{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px;}
.rl-step__card h3{font-size:20px;line-height:1.4;margin-bottom:10px;}
.rl-step__card p{color:var(--ink-600);font-size:15px;line-height:1.8;}

/* ---------- Check list ---------- */
.rl-checklist{
  border-top:1px solid var(--line);margin-top:8px;
}
.rl-check{
  display:flex;flex-wrap:wrap;gap:8px 20px;align-items:flex-start;
  padding:20px 0;border-bottom:1px solid var(--line);
}
.rl-check__label{
  flex:0 0 190px;font-weight:700;font-size:16px;display:flex;align-items:center;gap:10px;
}
.rl-check__label i{
  width:8px;height:8px;border-radius:50%;background:var(--brass-500);display:inline-block;flex:0 0 auto;
}
.rl-check__body{flex:1 1 320px;color:var(--ink-600);font-size:15px;}
.rl-check__body strong{color:var(--ink-900);font-family:var(--font-num);letter-spacing:.03em;}
@media (max-width:639px){.rl-check__label{flex:1 1 100%;}}

/* ---------- Note block ---------- */
.rl-note{
  margin-top:28px;background:var(--bg-alt);border:1px solid var(--line);border-left:3px solid var(--green-700);
  border-radius:0 var(--radius-card) var(--radius-card) 0;padding:20px 22px;color:var(--ink-600);font-size:15px;
}
.rl-note strong{color:var(--ink-900);}

/* ---------- Deep block ---------- */
.rl-deep{
  background:var(--green-900);color:var(--light-1);border-radius:var(--radius-card);
  border:1px solid var(--line-dark);padding:28px 24px;
}
@media (min-width:768px){.rl-deep{padding:40px 44px;}}
.rl-deep h2{color:var(--light-1);font-size:clamp(22px,3vw,30px);}
.rl-deep p{color:var(--light-2);font-size:15px;margin-top:12px;}
.rl-deep__grid{
  margin-top:28px;display:grid;gap:18px;grid-template-columns:1fr;
}
@media (min-width:640px){.rl-deep__grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.rl-deep__grid{grid-template-columns:repeat(3,1fr);}}
.rl-deep__item{
  border:1px solid var(--line-dark);border-radius:var(--radius-card);padding:18px;
  background:rgba(255,255,255,.03);
}
.rl-deep__item h3{font-size:16px;color:var(--light-1);margin-bottom:8px;}
.rl-deep__item p{font-size:14px;line-height:1.7;color:var(--light-2);margin:0;}

/* ---------- FAQ ---------- */
.rl-faq{max-width:820px;}
.rl-faq__item{border-bottom:1px solid var(--line);}
.rl-faq__item:first-child{border-top:1px solid var(--line);}
.rl-faq__q{
  width:100%;background:none;border:0;padding:20px 44px 20px 0;position:relative;
  text-align:left;font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.6;
}
.rl-faq__q:hover{color:var(--green-700);}
.rl-faq__q::after{
  content:"";position:absolute;right:6px;top:50%;width:14px;height:14px;margin-top:-7px;
  background:
    linear-gradient(var(--green-700),var(--green-700)) center/14px 2px no-repeat,
    linear-gradient(var(--green-700),var(--green-700)) center/2px 14px no-repeat;
  transition:transform .18s ease;
}
.rl-faq__item.is-open .rl-faq__q::after{transform:rotate(90deg);opacity:.6;}
.rl-faq__a{
  max-height:0;overflow:hidden;transition:max-height .18s ease;
}
.rl-faq__a p{font-size:15px;line-height:1.8;color:var(--ink-600);padding:0 44px 20px 0;margin:0;}

/* ---------- CTA ---------- */
.rl-cta{
  background:var(--green-900);border:1px solid var(--line-dark);border-radius:var(--radius-card);
  padding:32px 24px;text-align:center;
}
@media (min-width:768px){.rl-cta{padding:52px 40px;}}
.rl-cta h2{color:var(--light-1);font-size:clamp(22px,3.2vw,32px);}
.rl-cta p{color:var(--light-2);font-size:15px;margin:12px auto 24px;max-width:560px;}
.rl-cta__actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}
.rl-cta__spec{margin-top:20px;font-size:13px;color:var(--light-2);font-family:var(--font-num);letter-spacing:.04em;}

/* ---------- Footer ---------- */
.rl-footer{background:var(--green-900);color:var(--light-2);margin-top:64px;padding:52px 0 0;}
@media (min-width:1024px){.rl-footer{margin-top:96px;padding-top:72px;}}
.rl-footer__grid{
  display:grid;gap:32px;grid-template-columns:1fr;
  padding-bottom:40px;
}
@media (min-width:768px){
  .rl-footer__grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:0;}
  .rl-footer__col{padding:0 24px;border-left:1px solid var(--line-dark);}
  .rl-footer__col:first-child{padding-left:0;border-left:0;}
  .rl-footer__col:last-child{padding-right:0;}
}
@media (min-width:1024px){.rl-footer__col{padding:0 32px;}}
.rl-footer__brand{color:var(--light-1);font-size:20px;font-weight:700;letter-spacing:-.01em;margin-bottom:12px;}
.rl-footer__col p{font-size:14px;line-height:1.7;color:var(--light-2);max-width:280px;}
.rl-footer__spec{margin-top:14px;font-family:var(--font-num);font-size:12.5px;letter-spacing:.03em;color:var(--brass-500);}
.rl-footer__col h4{font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--brass-500);margin-bottom:16px;font-weight:600;}
.rl-footer__col ul li{margin-bottom:10px;}
.rl-footer__col ul a{color:var(--light-2);font-size:14.5px;border-bottom:1px solid transparent;}
.rl-footer__col ul a:hover{color:var(--brass-500);border-bottom-color:var(--brass-500);}
.rl-footer__bottom{
  border-top:1px solid var(--line-dark);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--light-2);
}
.rl-footer__bottom span{font-family:var(--font-num);letter-spacing:.02em;}

/* roulang page: category3 */
:root{
  --ink-900:#14211C;
  --ink-600:#55635C;
  --ink-300:#8C9791;
  --green-900:#0E3B32;
  --green-700:#14513F;
  --green-400:#2E7C61;
  --brass-500:#C8A45C;
  --brass-200:#EADFC2;
  --card-red:#B22B33;
  --bg:#F7F5EF;
  --bg-alt:#FFFFFF;
  --line:#E4DFD3;
  --line-dark:rgba(200,164,92,.32);
  --light-text:#F3F1E9;
  --light-text-2:#C9CFC9;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Inter",ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(14,59,50,.06);
  --shadow-2:0 14px 34px -14px rgba(14,59,50,.22);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.78;
  color:var(--ink-900);
  background:var(--bg);
  padding-top:64px;
  text-align:left;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;border:0}
a{color:var(--green-700);text-decoration:none}
a:hover{color:var(--green-400)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.3;color:var(--ink-900)}
button{font-family:inherit}
.grid-container{max-width:1200px;padding-left:20px;padding-right:20px}
.rl-num,.rl-data{font-family:var(--font-num);letter-spacing:.04em}

/* ============ 导航 ============ */
.rl-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  height:64px;
  background:rgba(247,245,239,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,height .2s ease;
}
.rl-header.is-scrolled{background:rgba(247,245,239,.95);border-bottom-color:var(--line)}
.rl-header__inner{
  max-width:1200px;height:100%;margin:0 auto;padding:0 24px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.rl-logo{display:inline-flex;align-items:center;gap:9px;color:var(--ink-900);text-decoration:none;flex:0 0 auto}
.rl-logo:hover{color:var(--ink-900)}
.rl-logo__mark{
  width:30px;height:30px;border-radius:8px;background:var(--green-900);
  color:var(--brass-500);display:flex;align-items:center;justify-content:center;
  font-size:15px;line-height:1;
}
.rl-logo__text{font-size:17px;font-weight:700;letter-spacing:-.01em}
.rl-nav{display:flex;align-items:center;gap:18px}
.rl-nav__list{display:flex;align-items:center}
.rl-nav__list li{
  display:flex;align-items:center;
  padding:0 17px;border-right:1px solid var(--line);
}
.rl-nav__list li:first-child{padding-left:0}
.rl-nav__list li:last-child{border-right:0;padding-right:0}
.rl-nav__list a{
  position:relative;display:inline-flex;align-items:center;
  font-size:15px;font-weight:500;color:var(--ink-600);
  padding:21px 0;white-space:nowrap;
  transition:color .18s ease;
}
.rl-nav__list a::after{
  content:"";position:absolute;left:0;right:0;bottom:15px;height:2px;
  background:var(--brass-500);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.rl-nav__list a:hover{color:var(--green-700)}
.rl-nav__list a:hover::after{transform:scaleX(1)}
.rl-nav__list a.is-active{color:var(--green-900);font-weight:700}
.rl-nav__list a.is-active::after{transform:scaleX(1)}
.rl-nav__list a.is-active::before{
  content:"";width:5px;height:5px;border-radius:50%;
  background:var(--brass-500);margin-right:7px;
}
.rl-burger{
  display:none;width:44px;height:44px;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;
  background:transparent;border:1px solid var(--line);border-radius:10px;cursor:pointer;
}
.rl-burger span{display:block;width:18px;height:2px;background:var(--green-900);border-radius:2px;transition:.2s}
.rl-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.rl-burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.rl-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 按钮 ============ */
.rl-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;font-family:inherit;line-height:1;
  text-decoration:none;cursor:pointer;border:1.5px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.rl-btn--primary{background:var(--green-700);color:var(--light-text);border-color:var(--green-700)}
.rl-btn--primary:hover{background:var(--green-400);border-color:var(--green-400);color:var(--light-text);transform:translateY(-1px)}
.rl-btn--primary:active{transform:none}
.rl-btn--ghost{background:transparent;color:var(--green-700);border-color:var(--green-700)}
.rl-btn--ghost:hover{background:var(--brass-200);border-color:var(--brass-500);color:var(--green-900)}
.rl-btn--brass{background:var(--brass-500);color:var(--ink-900);border-color:var(--brass-500)}
.rl-btn--brass:hover{background:#D6B672;border-color:#D6B672;color:var(--ink-900);transform:translateY(-1px)}
.rl-btn--ghost-light{background:transparent;color:var(--light-text);border-color:rgba(243,241,233,.5)}
.rl-btn--ghost-light:hover{background:rgba(243,241,233,.1);border-color:var(--brass-500);color:var(--light-text)}
.rl-btn:focus-visible{outline:2px solid var(--brass-500);outline-offset:2px}

/* ============ 通用区块 ============ */
.rl-section{padding:56px 0}
.rl-section--alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.rl-eyebrow{
  font-size:13px;font-weight:600;letter-spacing:.18em;color:var(--green-400);
  margin:0 0 10px;
}
.rl-sechead{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;flex-wrap:wrap;margin-bottom:28px;
}
.rl-sechead h2{font-size:clamp(24px,3.4vw,34px);max-width:640px}
.rl-sechead__note{margin:0;font-size:14.5px;line-height:1.7;color:var(--ink-600);max-width:420px}
.rl-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--brass-200);color:#7A5C1E;white-space:nowrap;
}
.rl-badge--green{background:#E3EFE8;color:var(--green-700)}
.rl-badge--warn{background:#F7E4E5;color:var(--card-red)}

/* ============ 页头带 ============ */
.rl-pagehead{
  padding:44px 0 34px;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.rl-crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-300);margin-bottom:21px;flex-wrap:wrap}
.rl-crumb a{color:var(--ink-600)}
.rl-crumb a:hover{color:var(--green-700);text-decoration:underline}
.rl-crumb span.sep{color:var(--line)}
.rl-crumb .is-current{color:var(--ink-600)}
.rl-pagehead h1{font-size:clamp(30px,5vw,44px);letter-spacing:-.01em;line-height:1.22}
.rl-pagehead__sub{margin:14px 0 0;font-size:15.5px;line-height:1.7;color:var(--ink-600);max-width:660px}
.rl-pagehead__facts{
  display:flex;flex-wrap:wrap;gap:0;margin-top:26px;
  border-top:1px solid var(--line);padding-top:18px;
}
.rl-fact{padding:0 26px;border-left:1px solid var(--line)}
.rl-fact:first-child{padding-left:0;border-left:0}
.rl-fact__k{display:block;font-size:12px;color:var(--ink-300);letter-spacing:.1em;margin-bottom:5px}
.rl-fact__v{font-family:var(--font-num);font-size:17px;font-weight:600;color:var(--green-900);letter-spacing:.04em}

/* ============ 筛选 ============ */
.rl-filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.rl-filter{
  min-height:38px;padding:0 16px;border-radius:999px;cursor:pointer;
  background:var(--bg-alt);border:1px solid var(--line);
  font-size:14px;color:var(--ink-600);
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.rl-filter:hover{border-color:var(--brass-500);color:var(--green-700)}
.rl-filter.is-active{background:var(--green-900);border-color:var(--green-900);color:var(--light-text)}
.rl-filter:focus-visible{outline:2px solid var(--brass-500);outline-offset:2px}

/* ============ 画廊 ============ */
.rl-gallery{margin-top:-10px}
.rl-gallery__cell{padding-top:20px}
.rl-gallery__cell[hidden]{display:none!important}
.rl-shot{
  position:relative;display:flex;flex-direction:column;height:100%;
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rl-shot::before{
  content:"";position:absolute;top:0;left:0;width:34px;height:3px;
  background:var(--brass-500);z-index:3;
}
.rl-shot:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brass-500)}
.rl-shot__media{
  position:relative;width:100%;aspect-ratio:4/3;background:var(--green-900);
  border-bottom:1px solid var(--line);overflow:hidden;
}
.rl-shot__media::before{
  content:"W";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:54px;font-weight:700;letter-spacing:.06em;
  color:rgba(200,164,92,.26);
}
.rl-shot__media img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transition:transform .35s ease;
}
.rl-shot:hover .rl-shot__media img{transform:scale(1.03)}
.rl-shot__tag{
  position:absolute;top:10px;left:10px;z-index:2;
  display:inline-flex;align-items:center;height:22px;padding:0 9px;border-radius:999px;
  font-size:11.5px;font-weight:600;
  background:rgba(234,223,194,.94);color:#7A5C1E;
}
.rl-shot__bar{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:8px 12px;font-size:12.5px;color:var(--light-text);
  background:linear-gradient(180deg,rgba(14,59,50,0) 0%,rgba(14,59,50,.88) 42%);
  transform:translateY(100%);transition:transform .22s ease;
}
.rl-shot:hover .rl-shot__bar{transform:none}
.rl-shot__body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1 1 auto}
.rl-shot__body h3{font-size:16px;font-weight:700;line-height:1.4;margin-bottom:8px}
.rl-shot__body p{font-size:13.5px;line-height:1.65;color:var(--ink-600);margin:0 0 14px}
.rl-shot__meta{
  margin-top:auto;display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:12.5px;color:var(--ink-300);
}
.rl-shot__meta .rl-num{color:var(--ink-600)}
.rl-shot__dot{width:3px;height:3px;border-radius:50%;background:var(--line);display:inline-block}
.rl-gallery__empty{
  margin:24px 0 0;padding:28px 24px;text-align:center;font-size:15px;color:var(--ink-600);
  border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--bg);
}

/* ============ 安装包清单 ============ */
.rl-packs{display:grid;gap:18px;grid-template-columns:repeat(3,1fr)}
.rl-pack{
  display:flex;flex-direction:column;
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rl-pack:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--brass-500)}
.rl-pack__head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.rl-pack__head h3{font-size:19px}
.rl-pack__desc{font-size:14.5px;line-height:1.7;color:var(--ink-600);margin:0 0 18px}
.rl-pack__specs{margin:0 0 20px;border-top:1px solid var(--line)}
.rl-pack__specs > div{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  padding:10px 0;border-bottom:1px solid var(--line);
}
.rl-pack__specs dt{font-size:13px;color:var(--ink-300);font-weight:400}
.rl-pack__specs dd{margin:0;font-size:13.5px;color:var(--ink-900);font-family:var(--font-num);letter-spacing:.03em}
.rl-pack .rl-btn{align-self:flex-start;margin-top:auto}

/* ============ 挑版本建议 ============ */
.rl-picks{border-top:1px solid var(--line)}
.rl-pick{
  display:flex;gap:24px;align-items:flex-start;
  padding:26px 0;border-bottom:1px solid var(--line);
}
.rl-pick__no{
  flex:0 0 auto;font-family:var(--font-num);font-size:40px;font-weight:700;line-height:1;
  color:var(--brass-500);letter-spacing:.04em;
}
.rl-pick__body h3{font-size:19px;margin-bottom:8px}
.rl-pick__body p{margin:0;font-size:14.5px;line-height:1.75;color:var(--ink-600);max-width:780px}
.rl-pick__tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}

/* ============ 深色更新节奏 ============ */
.rl-rhythm{
  background:var(--green-900);color:var(--light-text-2);
  border-top:1px solid var(--line-dark);border-bottom:1px solid var(--line-dark);
  padding:62px 0;
}
.rl-rhythm h2{color:var(--light-text)}
.rl-rhythm .rl-eyebrow{color:var(--brass-500)}
.rl-rhythm__lead{margin:14px 0 0;font-size:15px;line-height:1.8;color:var(--light-text-2);max-width:620px}
.rl-rhythm__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:32px}
.rl-metric{
  border:1px solid var(--line-dark);border-radius:var(--radius-card);
  padding:20px;background:rgba(243,241,233,.03);
}
.rl-metric__k{font-size:12.5px;letter-spacing:.12em;color:var(--brass-500);margin-bottom:10px}
.rl-metric__v{
  font-family:var(--font-num);font-size:26px;font-weight:700;color:var(--light-text);
  letter-spacing:.04em;line-height:1.2;
}
.rl-metric__v small{font-size:13px;font-weight:500;color:var(--light-text-2);margin-left:4px;letter-spacing:0}
.rl-rhythm__note{
  margin:28px 0 0;padding-top:22px;border-top:1px solid var(--line-dark);
  font-size:14px;line-height:1.8;color:var(--light-text-2);
}

/* ============ FAQ ============ */
.rl-faq{border-top:1px solid var(--line);max-width:900px}
.rl-faq__item{border-bottom:1px solid var(--line)}
.rl-faq__q{
  width:100%;min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:700;color:var(--ink-900);
}
.rl-faq__q:hover{color:var(--green-700)}
.rl-faq__q:focus-visible{outline:2px solid var(--brass-500);outline-offset:2px}
.rl-faq__icon{position:relative;width:14px;height:14px;flex:0 0 auto}
.rl-faq__icon::before,.rl-faq__icon::after{content:"";position:absolute;background:var(--green-700);border-radius:2px;transition:transform .18s ease,opacity .18s ease}
.rl-faq__icon::before{left:0;right:0;top:6px;height:2px}
.rl-faq__icon::after{top:0;bottom:0;left:6px;width:2px}
.rl-faq__item.is-open .rl-faq__icon::after{transform:scaleY(0);opacity:0}
.rl-faq__a{max-height:0;overflow:hidden;transition:max-height .18s ease}
.rl-faq__a p{margin:0 0 20px;font-size:15px;line-height:1.8;color:var(--ink-600);max-width:760px}

/* ============ CTA ============ */
.rl-cta{
  background:var(--green-900);border:1px solid var(--line-dark);border-radius:var(--radius-card);
  padding:44px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.rl-cta h2{color:var(--light-text);font-size:clamp(22px,3vw,30px);max-width:560px}
.rl-cta__spec{margin:12px 0 0;font-size:13px;color:var(--light-text-2);font-family:var(--font-num);letter-spacing:.04em}
.rl-cta__actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.rl-footer{background:var(--green-900);color:var(--light-text-2);padding:60px 0 26px}
.rl-footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr}
.rl-footer__col{padding:0 26px;border-left:1px solid var(--line-dark)}
.rl-footer__col:first-child{border-left:0;padding-left:0}
.rl-footer__col:last-child{padding-right:0}
.rl-footer__brand{font-size:18px;font-weight:700;color:var(--light-text);margin-bottom:10px}
.rl-footer__col p{font-size:14px;line-height:1.7;color:var(--light-text-2);max-width:280px;margin:0 0 14px}
.rl-footer__spec{font-size:12.5px;font-family:var(--font-num);letter-spacing:.04em;color:rgba(201,207,201,.78)}
.rl-footer__col h4{font-size:14px;font-weight:700;color:var(--light-text);margin-bottom:14px}
.rl-footer__col ul li{margin-bottom:10px}
.rl-footer__col ul a{font-size:14px;color:var(--light-text-2);transition:color .18s ease}
.rl-footer__col ul a:hover{color:var(--brass-500)}
.rl-footer__bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line-dark);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(201,207,201,.8);
}

/* ============ 响应式 ============ */
@media screen and (min-width:640px){
  .grid-container{padding-left:24px;padding-right:24px}
  .rl-section{padding:72px 0}
}
@media screen and (min-width:1024px){
  .grid-container{max-width:1240px;padding-left:32px;padding-right:32px}
  .rl-section{padding:88px 0}
  .rl-header__inner{padding:0 32px}
}
@media screen and (max-width:1023px){
  body{padding-top:56px}
  .rl-header{height:56px}
  .rl-burger{display:flex}
  .rl-nav{
    position:fixed;top:56px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:14px;
    background:var(--bg);border-bottom:1px solid var(--line);
    padding:10px 24px 26px;max-height:calc(100vh - 56px);overflow-y:auto;
    box-shadow:0 18px 30px -20px rgba(14,59,50,.3);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .18s ease,transform .18s ease,visibility .18s;
  }
  .rl-nav.is-open{opacity:1;visibility:visible;transform:none}
  .rl-nav__list{flex-direction:column;align-items:stretch;width:100%}
  .rl-nav__list li{padding:0;border-right:0;border-bottom:1px solid var(--line)}
  .rl-nav__list li:first-child{padding-left:0}
  .rl-nav__list a{padding:15px 0;width:100%;font-size:16px}
  .rl-nav__list a::after{bottom:8px}
  .rl-nav__cta{width:100%}
  .rl-packs{grid-template-columns:repeat(2,1fr)}
  .rl-rhythm__grid{grid-template-columns:repeat(2,1fr)}
  .rl-footer__grid{grid-template-columns:1fr 1fr;row-gap:34px}
  .rl-footer__col{padding:0 20px}
  .rl-footer__col:nth-child(3){border-left:0;padding-left:0}
  .rl-footer__col:nth-child(2){padding-right:0}
  .rl-cta{padding:34px 26px}
}
@media screen and (max-width:639px){
  .rl-pagehead{padding:32px 0 26px}
  .rl-fact{padding:0 16px}
  .rl-fact__v{font-size:15px}
  .rl-packs{grid-template-columns:1fr}
  .rl-rhythm__grid{grid-template-columns:1fr}
  .rl-pick{gap:16px}
  .rl-pick__no{font-size:30px}
  .rl-shot__body{padding:12px 12px 14px}
  .rl-shot__body h3{font-size:14px;margin-bottom:0}
  .rl-shot__body p{display:none}
  .rl-shot__meta{margin-top:8px;font-size:11.5px}
  .rl-footer__grid{grid-template-columns:1fr;row-gap:30px}
  .rl-footer__col{padding:0;border-left:0}
  .rl-footer__bottom{flex-direction:column;gap:8px}
  .rl-cta__actions{width:100%}
  .rl-cta__actions .rl-btn{width:100%}
}
@media (hover:none){
  .rl-shot__bar{transform:none}
}

/* roulang page: category4 */
:root{
  --ink-900:#14211C;
  --ink-600:#55635C;
  --ink-300:#8C9791;
  --green-900:#0E3B32;
  --green-700:#14513F;
  --green-400:#2E7C61;
  --brass-500:#C8A45C;
  --brass-200:#EADFC2;
  --card-red:#B22B33;
  --bg:#F7F5EF;
  --bg-alt:#FFFFFF;
  --line:#E4DFD3;
  --line-dark:rgba(200,164,92,.32);
  --light-text:#F3F1E9;
  --light-text-2:#C9CFC9;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(14,59,50,.06);
  --shadow-hover:0 14px 34px -14px rgba(14,59,50,.22);
  --font-sans:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Inter",ui-monospace,"DIN Alternate","Menlo",monospace;
  --header-h:64px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:var(--header-h);
  background:var(--bg);
  color:var(--ink-900);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--green-700);text-decoration:none;transition:color .18s ease,border-color .18s ease;}
a:hover{color:var(--green-400);}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure,dl,dd,dt{margin:0;}
ul,ol{padding:0;list-style:none;}
h1{font-size:clamp(30px,5vw,46px);line-height:1.22;font-weight:800;letter-spacing:-.01em;}
h2{font-size:clamp(24px,3.4vw,34px);line-height:1.3;font-weight:800;letter-spacing:-.01em;}
h3{font-size:20px;line-height:1.4;font-weight:700;}
p{font-size:16px;line-height:1.78;color:var(--ink-600);}
:focus-visible{outline:2px solid var(--brass-500);outline-offset:2px;border-radius:4px;}

.grid-container{
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media(min-width:640px){.grid-container{padding-left:24px;padding-right:24px;}}
@media(min-width:1024px){.grid-container{padding-left:32px;padding-right:32px;max-width:1240px;}}

/* ============ 顶部导航 ============ */
.rl-header{
  position:fixed;
  top:0;left:0;right:0;
  height:var(--header-h);
  z-index:900;
  background:rgba(247,245,239,.86);
  backdrop-filter:saturate(160%) blur(10px);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.rl-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px -18px rgba(14,59,50,.5);
}
.rl-header__inner{
  max-width:1240px;
  height:100%;
  margin:0 auto;
  padding:0 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
@media(min-width:640px){.rl-header__inner{padding:0 24px;}}
@media(min-width:1024px){.rl-header__inner{padding:0 32px;}}
.rl-logo{display:inline-flex;align-items:center;gap:9px;color:var(--ink-900);font-weight:700;letter-spacing:-.01em;}
.rl-logo:hover{color:var(--green-700);}
.rl-logo__mark{
  width:26px;height:26px;flex:0 0 26px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:8px;
  background:var(--green-900);
  color:var(--brass-500);
  font-size:14px;line-height:1;
}
.rl-logo__text{font-size:17px;white-space:nowrap;}
.rl-nav{display:flex;align-items:center;gap:26px;}
.rl-nav__list{display:flex;align-items:center;gap:0;margin:0;}
.rl-nav__list li{display:flex;align-items:center;}
.rl-nav__list li+li{border-left:1px solid var(--line);}
.rl-nav__list a{
  position:relative;
  display:inline-block;
  padding:6px 16px;
  font-size:15px;
  color:var(--ink-600);
  white-space:nowrap;
}
.rl-nav__list li:first-child a{padding-left:0;}
.rl-nav__list a::after{
  content:"";
  position:absolute;
  left:16px;right:16px;bottom:0;
  height:2px;
  background:var(--brass-500);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .18s ease;
}
.rl-nav__list li:first-child a::after{left:0;right:0;}
.rl-nav__list a:hover{color:var(--green-700);}
.rl-nav__list a:hover::after{transform:scaleX(1);}
.rl-nav__list a.is-active{color:var(--green-700);font-weight:600;}
.rl-nav__list a.is-active::after{transform:scaleX(1);}
.rl-nav__cta{padding:9px 20px;font-size:14.5px;}
.rl-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:11px 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1.5px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.rl-btn--primary{background:var(--green-700);color:var(--light-text);border-color:var(--green-700);}
.rl-btn--primary:hover{background:var(--green-400);border-color:var(--green-400);color:#fff;transform:translateY(-1px);}
.rl-btn--primary:active{transform:translateY(0);}
.rl-btn--ghost{background:transparent;color:var(--green-700);border-color:var(--green-700);}
.rl-btn--ghost:hover{background:var(--brass-200);border-color:var(--brass-500);color:var(--green-700);}
.rl-btn--brass{background:var(--brass-500);color:var(--ink-900);border-color:var(--brass-500);}
.rl-btn--brass:hover{background:#d8b671;border-color:#d8b671;color:var(--ink-900);transform:translateY(-1px);}
.rl-btn--outline-light{background:transparent;color:var(--light-text);border-color:var(--line-dark);}
.rl-btn--outline-light:hover{background:rgba(200,164,92,.14);color:var(--light-text);border-color:var(--brass-500);}

.rl-burger{
  display:none;
  width:44px;height:44px;
  padding:0;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  position:relative;
}
.rl-burger span{
  position:absolute;left:12px;right:12px;height:1.8px;
  background:var(--ink-900);border-radius:2px;
  transition:transform .18s ease,opacity .18s ease;
}
.rl-burger span:nth-child(1){top:15px;}
.rl-burger span:nth-child(2){top:21px;}
.rl-burger span:nth-child(3){top:27px;}
.rl-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.rl-burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.rl-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

@media(max-width:1023px){
  .rl-burger{display:block;}
  .rl-nav{
    position:fixed;
    top:var(--header-h);left:0;right:0;
    max-height:0;
    overflow:hidden;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:rgba(247,245,239,.98);
    backdrop-filter:blur(10px);
    border-bottom:1px solid transparent;
    transition:max-height .18s ease,border-color .18s ease,padding .18s ease;
  }
  .rl-nav.is-open{
    max-height:70vh;
    overflow-y:auto;
    padding:8px 0 20px;
    border-bottom-color:var(--line);
  }
  .rl-nav__list{flex-direction:column;align-items:stretch;gap:0;}
  .rl-nav__list li+li{border-left:0;border-top:1px solid var(--line);}
  .rl-nav__list a{padding:15px 24px;font-size:16px;color:var(--ink-900);}
  .rl-nav__list li:first-child a{padding-left:24px;}
  .rl-nav__list a::after{left:24px;right:auto;width:22px;}
  .rl-nav__cta{margin:16px 24px 0;}
}
@media(max-width:639px){
  :root{--header-h:56px;}
  .rl-logo__text{font-size:16px;}
}

/* ============ 页头带 ============ */
.rl-pagehead{
  background:linear-gradient(180deg,#FFFFFF 0%,#FBF9F3 100%);
  border-bottom:1px solid var(--line);
  padding:44px 0 40px;
}
@media(min-width:1024px){.rl-pagehead{padding:64px 0 56px;}}
.rl-crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-300);
  margin-bottom:18px;
}
.rl-crumb a{color:var(--ink-300);}
.rl-crumb a:hover{color:var(--green-700);text-decoration:underline;text-underline-offset:3px;}
.rl-crumb__sep{color:var(--line);}
.rl-crumb__now{color:var(--ink-600);}
.rl-pagehead__tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.18em;
  color:var(--green-700);
  margin-bottom:14px;
}
.rl-pagehead__tag::before{content:"";width:22px;height:1px;background:var(--brass-500);}
.rl-pagehead h1{max-width:860px;margin-bottom:16px;}
.rl-pagehead__lead{
  max-width:660px;
  font-size:16.5px;
  line-height:1.75;
  color:var(--ink-600);
}
.rl-pagehead__meta{
  display:flex;flex-wrap:wrap;gap:14px 26px;
  margin-top:26px;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--ink-300);
}
.rl-pagehead__meta b{
  font-family:var(--font-num);
  letter-spacing:.04em;
  color:var(--ink-900);
  font-weight:600;
}

/* ============ 通用板块 ============ */
.rl-section{padding:56px 0;}
@media(min-width:1024px){.rl-section{padding:92px 0;}}
.rl-section--tight{padding-top:0;}
.rl-section--alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.rl-sec-head{margin-bottom:36px;max-width:760px;}
.rl-sec-head__kicker{
  display:block;
  font-size:13px;
  letter-spacing:.18em;
  color:var(--brass-500);
  font-weight:600;
  margin-bottom:12px;
}
.rl-sec-head h2{margin-bottom:14px;}
.rl-sec-head p{font-size:15.5px;color:var(--ink-600);max-width:640px;}

/* ============ 问答对照行 ============ */
.rl-qa{border-top:1px solid var(--line);}
.rl-qa__row{
  display:grid;
  grid-template-columns:320px minmax(0,1fr);
  gap:40px;
  padding:28px 0;
  border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.rl-qa__row:hover{background:rgba(234,223,194,.22);}
.rl-qa__q{display:flex;gap:14px;align-items:flex-start;}
.rl-qa__idx{
  font-family:var(--font-num);
  font-size:13px;
  letter-spacing:.06em;
  color:var(--brass-500);
  line-height:1.9;
  flex:0 0 auto;
}
.rl-qa__q h3{font-size:17.5px;line-height:1.5;color:var(--ink-900);}
.rl-qa__a p{font-size:15px;line-height:1.82;color:var(--ink-600);}
.rl-qa__a p+p{margin-top:10px;}
.rl-qa__a strong{color:var(--ink-900);font-weight:600;}
@media(max-width:1023px){
  .rl-qa__row{grid-template-columns:1fr;gap:14px;padding:0;border-bottom:1px solid var(--line);}
  .rl-qa__q{
    background:#FBF8F0;
    padding:16px 18px;
    border-radius:var(--radius-btn);
    margin:18px 0 0;
  }
  .rl-qa__a{padding:0 2px 22px;}
}

/* ============ 环境对照表 ============ */
.rl-spec{
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.rl-spec__row{
  display:grid;
  grid-template-columns:260px minmax(0,1fr);
  border-bottom:1px solid var(--line);
}
.rl-spec__row:last-child{border-bottom:0;}
.rl-spec__key{
  padding:20px 24px;
  background:#FBF8F0;
  border-right:1px solid var(--line);
  font-size:15px;
  font-weight:600;
  color:var(--ink-900);
  display:flex;
  align-items:center;
}
.rl-spec__val{
  padding:20px 24px;
  font-size:15px;
  color:var(--ink-600);
  display:flex;
  align-items:center;
}
.rl-spec__val .num{font-family:var(--font-num);letter-spacing:.04em;color:var(--ink-900);font-weight:600;margin-right:6px;}
@media(max-width:767px){
  .rl-spec__row{grid-template-columns:1fr;}
  .rl-spec__key{border-right:0;border-bottom:1px solid var(--line);padding:14px 18px;font-size:14.5px;}
  .rl-spec__val{padding:14px 18px;font-size:14.5px;}
}
.rl-figure{margin-top:28px;border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);}
.rl-figure img{width:100%;aspect-ratio:2/1;object-fit:cover;background:var(--green-900);}
.rl-figure figcaption{
  padding:12px 18px;
  font-size:13px;
  color:var(--ink-300);
  background:var(--bg-alt);
  border-top:1px solid var(--line);
}

/* ============ 自检清单 ============ */
.rl-check{display:grid;gap:0;border-top:1px solid var(--line);}
.rl-check__item{
  display:grid;
  grid-template-columns:56px minmax(0,1fr);
  gap:20px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
  align-items:start;
}
.rl-check__no{
  font-family:var(--font-num);
  font-size:26px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--brass-500);
  line-height:1.1;
}
.rl-check__body h3{font-size:17px;margin-bottom:8px;}
.rl-check__body p{font-size:15px;color:var(--ink-600);}
@media(max-width:639px){
  .rl-check__item{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:18px 0;}
  .rl-check__no{font-size:22px;}
}

/* ============ 徽章 ============ */
.rl-badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  line-height:1.6;
  font-weight:600;
  letter-spacing:.02em;
}
.rl-badge--green{background:#E5F0EA;color:var(--green-700);}
.rl-badge--brass{background:var(--brass-200);color:#7A5F22;}
.rl-badge--warn{background:#FBE9EA;color:var(--card-red);}
.rl-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}

/* ============ FAQ 手风琴 ============ */
.rl-faq{border-top:1px solid var(--line);}
.rl-faq__item{border-bottom:1px solid var(--line);}
.rl-faq__q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 0;
  background:none;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:700;
  color:var(--ink-900);
  line-height:1.5;
  min-height:44px;
}
.rl-faq__q:hover{color:var(--green-700);}
.rl-faq__icon{
  position:relative;
  flex:0 0 18px;
  width:18px;height:18px;
  transition:transform .18s ease;
}
.rl-faq__icon::before,
.rl-faq__icon::after{
  content:"";
  position:absolute;
  top:50%;left:50%;
  background:var(--brass-500);
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.rl-faq__icon::before{width:14px;height:2px;}
.rl-faq__icon::after{width:2px;height:14px;transition:opacity .18s ease;}
.rl-faq__item.is-open .rl-faq__icon::after{opacity:0;}
.rl-faq__item.is-open .rl-faq__icon{transform:rotate(180deg);}
.rl-faq__a{
  max-height:0;
  overflow:hidden;
  transition:max-height .18s ease;
}
.rl-faq__a p{
  padding:0 0 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-600);
  max-width:760px;
}

/* ============ CTA 条 ============ */
.rl-cta{
  background:var(--green-900);
  border:1px solid var(--line-dark);
  border-radius:var(--radius-card);
  padding:34px 30px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.rl-cta__text h2{
  color:var(--light-text);
  font-size:clamp(22px,3vw,28px);
  margin-bottom:10px;
}
.rl-cta__text p{color:var(--light-text-2);font-size:14.5px;margin:0;}
.rl-cta__note{
  margin-top:12px;
  font-size:13px;
  color:var(--ink-300);
  font-family:var(--font-num);
  letter-spacing:.04em;
}
.rl-cta__actions{display:flex;flex-wrap:wrap;gap:14px;}
@media(max-width:767px){
  .rl-cta{padding:26px 20px;flex-direction:column;align-items:flex-start;}
  .rl-cta__actions{width:100%;}
  .rl-cta__actions .rl-btn{flex:1 1 auto;}
}

/* ============ 页脚 ============ */
.rl-footer{
  background:var(--green-900);
  color:var(--light-text-2);
  margin-top:56px;
  padding:56px 0 26px;
}
@media(min-width:1024px){.rl-footer{padding:76px 0 28px;margin-top:88px;}}
.rl-footer__grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:0;
}
.rl-footer__col{padding:0 26px;border-left:1px solid var(--line-dark);}
.rl-footer__col:first-child{border-left:0;padding-left:0;}
.rl-footer__col:last-child{padding-right:0;}
.rl-footer__brand{
  color:var(--light-text);
  font-size:18px;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:12px;
}
.rl-footer__col p{color:var(--light-text-2);font-size:14px;line-height:1.7;max-width:250px;}
.rl-footer__spec{
  margin-top:14px;
  font-family:var(--font-num);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--brass-500);
}
.rl-footer__col h4{
  color:var(--light-text);
  font-size:13px;
  letter-spacing:.14em;
  font-weight:600;
  margin-bottom:16px;
}
.rl-footer__col ul{display:grid;gap:10px;}
.rl-footer__col ul a{
  color:var(--light-text-2);
  font-size:14.5px;
}
.rl-footer__col ul a:hover{color:var(--brass-500);}
.rl-footer__bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line-dark);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  color:var(--ink-300);
}
@media(max-width:1023px){
  .rl-footer__grid{grid-template-columns:1fr 1fr;}
  .rl-footer__col{padding:0 0 26px;border-left:0;border-bottom:1px solid var(--line-dark);margin-bottom:26px;}
  .rl-footer__col:nth-child(odd){padding-right:20px;}
  .rl-footer__col:nth-child(even){padding-left:20px;border-left:1px solid var(--line-dark);}
  .rl-footer__col:nth-last-child(-n+2){border-bottom:0;margin-bottom:0;}
}
@media(max-width:639px){
  .rl-footer__grid{grid-template-columns:1fr;}
  .rl-footer__col{padding:0 0 22px !important;border-left:0 !important;border-bottom:1px solid var(--line-dark);margin-bottom:22px;}
  .rl-footer__col:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0 !important;}
  .rl-footer__bottom{flex-direction:column;}
}