/* roulang page: index */
:root{
  --ink:#1E3D36;
  --ink-deep:#16211F;
  --ink-light:#2C5A4E;
  --jade:#3C8C7E;
  --clay:#C4663C;
  --paper:#F7F3EA;
  --card:#FFFFFF;
  --sand:#F1EADC;
  --dark:#16211F;
  --line:#E2DBCB;
  --text:#1F2A28;
  --muted:#6B7A75;
  --inverse:#F7F3EA;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --sh:0 1px 2px rgba(22,33,31,.06);
  --sh-hover:0 12px 28px rgba(22,33,31,.12);
  --font-head:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-body:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--ink);text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0;list-style:none}
::selection{background:rgba(60,140,126,.24)}
:focus-visible{outline:2px solid var(--clay);outline-offset:2px;border-radius:4px}

.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
.section{padding:88px 0}
.section-paper{background:var(--paper)}
.section-white{background:var(--card)}
.section-sand{background:var(--sand)}
.section-dark{background:var(--dark);color:var(--inverse)}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head-wide{max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.sec-title{
  font-family:var(--font-head);
  font-size:30px;line-height:1.3;font-weight:700;color:var(--ink);
  position:relative;padding-left:16px;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.45em;width:4px;height:18px;
  background:var(--ink);border-radius:2px;
}
.section-dark .sec-title{color:var(--inverse)}
.section-dark .sec-title::before{background:var(--jade)}
.sec-lead{margin-top:14px;font-size:16px;line-height:1.9;color:var(--muted);max-width:720px}
.section-dark .sec-lead{color:rgba(247,243,234,.72)}
.sec-desc{margin-top:12px;font-size:15.5px;line-height:1.9;color:var(--muted);max-width:680px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background .22s ease,color .22s ease,transform .18s ease,box-shadow .22s ease,border-color .22s ease;
}
.btn-primary{background:var(--ink);color:#fff;box-shadow:0 1px 2px rgba(22,33,31,.14)}
.btn-primary:hover{background:var(--ink-light);transform:translateY(-1px);box-shadow:var(--sh-hover)}
.btn-primary:active{transform:translateY(0);box-shadow:0 1px 2px rgba(22,33,31,.14)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:rgba(30,61,54,.08);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-light{background:var(--paper);color:var(--ink)}
.btn-light:hover{background:#fff;transform:translateY(-1px);box-shadow:0 12px 28px rgba(0,0,0,.24)}
.btn-sm{padding:9px 16px;font-size:14px}
.link-line{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--ink);padding-bottom:3px;transition:color .2s,border-color .2s;
}
.link-line:hover{color:var(--clay);border-bottom-color:var(--clay)}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:var(--r-pill);
  font-size:12px;line-height:1.8;background:var(--sand);color:var(--ink);border:1px solid var(--line);
}
.badge-jade{background:rgba(60,140,126,.12);border-color:rgba(60,140,126,.3);color:var(--ink-light)}

/* header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,243,234,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 8px 20px rgba(22,33,31,.07)}
.nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:10px;min-width:0}
.logo-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:10px;background:var(--ink);color:var(--paper);
  display:grid;place-items:center;font-family:var(--font-head);font-size:15px;letter-spacing:.04em;
}
.logo-text strong{display:block;font-family:var(--font-head);font-size:17px;line-height:1.25;color:var(--ink);white-space:nowrap}
.logo-text span{display:block;font-size:11px;letter-spacing:.2em;color:var(--muted);line-height:1.4}
.main-nav{display:flex;align-items:center;gap:22px}
.main-nav a{
  position:relative;font-size:15px;color:var(--text);padding:6px 0;transition:color .2s;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--jade);
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;border-radius:2px;
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after,.main-nav a[aria-current="page"]::after{transform:scaleX(1)}
.main-nav a[aria-current="page"]{color:var(--ink);font-weight:600}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-cta{padding:11px 20px;font-size:14.5px;box-shadow:inset 0 1px 0 rgba(255,255,255,.14),0 1px 2px rgba(22,33,31,.16)}
.burger{
  display:none;width:42px;height:42px;border:1px solid var(--line);background:var(--card);
  border-radius:10px;align-items:center;justify-content:center;cursor:pointer;
}
.burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative;border-radius:2px}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px}
.burger span::before{top:-6px}
.burger span::after{top:6px}

/* drawer */
.drawer{position:fixed;inset:0;z-index:90;visibility:hidden;pointer-events:none}
.drawer.open{visibility:visible;pointer-events:auto}
.drawer-mask{position:absolute;inset:0;background:rgba(22,33,31,.45);opacity:0;transition:opacity .25s}
.drawer.open .drawer-mask{opacity:1}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(340px,86vw);background:var(--paper);
  padding:22px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(100%);transition:transform .3s ease;overflow-y:auto;
}
.drawer.open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--card);font-size:18px;color:var(--ink);cursor:pointer}
.drawer-panel a.d-link{
  display:block;padding:15px 2px;font-size:18px;color:var(--text);border-bottom:1px solid var(--line);
}
.drawer-panel a.d-link:hover{color:var(--ink)}
.drawer-cta{margin-top:auto;padding-top:18px}
.drawer-cta .btn{width:100%}

/* hero */
.hero{position:relative;overflow:hidden;background:var(--paper);padding:64px 0 48px}
.hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/06881e4eea8a5b42.jpg') center/cover no-repeat;
  opacity:.14;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(115deg,rgba(247,243,234,.96) 0%,rgba(247,243,234,.86) 46%,rgba(247,243,234,.72) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.02fr .98fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.16em;
  color:var(--ink-light);background:rgba(60,140,126,.1);border:1px solid rgba(60,140,126,.28);
  padding:5px 12px;border-radius:var(--r-pill);
}
.hero h1{
  font-family:var(--font-head);font-size:clamp(28px,3.2vw,42px);line-height:1.3;color:var(--ink);
  margin:18px 0 14px;font-weight:700;
}
.hero-sub{font-size:17px;line-height:1.8;color:var(--ink-light);font-weight:600;max-width:520px}
.hero-desc{margin-top:14px;font-size:15.5px;line-height:1.9;color:var(--muted);max-width:540px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-note{margin-top:14px;font-size:13px;color:var(--muted);letter-spacing:.02em}
.hero-visual{position:relative}
.hero-photo{
  position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  background:var(--sand);box-shadow:var(--sh);aspect-ratio:4/3;
}
.hero-photo img{width:100%;height:100%;object-fit:cover;border-radius:0}
.seal{
  position:absolute;right:16px;bottom:16px;width:76px;height:76px;border-radius:12px;
  background:rgba(30,61,54,.92);color:var(--paper);display:grid;place-items:center;text-align:center;
  font-family:var(--font-head);font-size:14px;line-height:1.35;letter-spacing:.08em;
  border:1px solid rgba(247,243,234,.28);
}
.hero-panel{
  margin-top:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px 18px;box-shadow:var(--sh);
}
.hero-panel h3{font-size:14px;color:var(--ink);font-weight:700;margin-bottom:10px;font-family:var(--font-body)}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  font-size:12.5px;padding:5px 12px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--paper);color:var(--ink);transition:background .2s,border-color .2s,color .2s;
  cursor:pointer;
}
.chip:hover{background:rgba(60,140,126,.12);border-color:rgba(60,140,126,.4)}
.chip.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.hero-preview{
  margin-top:12px;padding-top:12px;border-top:1px dashed var(--line);
  font-size:13.5px;color:var(--muted);line-height:1.75;
}
.hero-preview strong{color:var(--ink)}
.hero-tags{
  position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;
  padding-top:18px;border-top:1px solid var(--line);
}
.hero-tags span{
  font-size:12.5px;letter-spacing:.1em;color:var(--ink-light);
  border:1px solid var(--line);background:rgba(255,255,255,.6);border-radius:var(--r-pill);
  padding:5px 14px;
}

/* download */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px}
.dl-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh);display:flex;flex-direction:column;gap:10px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.dl-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(60,140,126,.4)}
.dl-icon{
  width:46px;height:46px;border-radius:12px;background:rgba(60,140,126,.12);
  display:grid;place-items:center;color:var(--ink);
}
.dl-icon svg{width:24px;height:24px;fill:currentColor}
.dl-card h3{font-size:17px;color:var(--ink);font-weight:700}
.dl-card p{font-size:14px;color:var(--muted);line-height:1.8;min-height:50px}
.dl-card .btn{width:100%;margin-top:6px}
.dl-note{margin-top:22px;font-size:13.5px;color:var(--muted);line-height:1.8}

/* pain */
.pain-grid{display:grid;grid-template-columns:.85fr 1.4fr;gap:56px;align-items:start}
.pain-item{
  display:flex;align-items:flex-start;gap:18px;padding:20px 0;border-bottom:1px solid var(--line);
  transition:background .2s;
}
.pain-item:first-child{padding-top:0}
.pain-num{font-family:var(--font-head);font-size:19px;color:var(--clay);min-width:34px;line-height:1.5}
.pain-body{flex:1;min-width:0}
.pain-body h3{font-size:16.5px;color:var(--ink);font-weight:700;line-height:1.5}
.pain-body p{font-size:14.5px;color:var(--muted);line-height:1.8;margin-top:4px}
.pain-link{
  font-size:13px;color:var(--ink-light);white-space:nowrap;border-bottom:1px solid rgba(60,140,126,.5);
  padding-bottom:2px;transition:color .2s,border-color .2s;
}
.pain-link:hover{color:var(--clay);border-color:var(--clay)}

/* solution */
.solve-grid{display:grid;grid-template-columns:1fr 1fr 1fr;grid-auto-rows:1fr;gap:24px}
.solve-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh);display:flex;flex-direction:column;gap:10px;
  transition:transform .25s ease,box-shadow .25s ease;
}
.solve-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover)}
.solve-card h3{font-size:17.5px;color:var(--ink);font-weight:700;line-height:1.45}
.solve-card p{font-size:14.5px;color:var(--muted);line-height:1.8}
.solve-card .link-line{margin-top:auto;font-size:13.5px;align-self:flex-start}
.solve-card.big{grid-row:span 2;padding:0;overflow:hidden}
.solve-card.big .big-img{aspect-ratio:16/10;background:var(--sand);overflow:hidden;border-radius:0}
.solve-card.big .big-img img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease}
.solve-card.big:hover .big-img img{transform:scale(1.03)}
.solve-card.big .big-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.mini-list{margin-top:4px;display:flex;flex-direction:column;gap:8px}
.mini-list li{
  position:relative;padding-left:16px;font-size:14px;color:var(--muted);line-height:1.75;
}
.mini-list li::before{
  content:"";position:absolute;left:0;top:.75em;width:6px;height:6px;border-radius:1px;background:var(--jade);
}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.step{position:relative;padding-right:12px}
.step::after{
  content:"";position:absolute;top:22px;right:-16px;width:32px;border-top:1px dashed var(--line);
}
.step:last-child::after{display:none}
.step-num{
  width:44px;height:44px;border-radius:10px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-family:var(--font-head);font-size:18px;margin-bottom:16px;
}
.step h3{font-size:17px;color:var(--ink);font-weight:700;line-height:1.5}
.step p{font-size:14.5px;color:var(--muted);line-height:1.85;margin-top:6px}
.step-foot{margin-top:28px}

/* topic wall */
.topic-wall{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.topic-card{
  position:relative;display:block;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--sh);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.topic-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(60,140,126,.45)}
.topic-card h3{font-size:15.5px;color:var(--ink);font-weight:700;line-height:1.5;padding-right:20px}
.topic-card p{font-size:13px;color:var(--muted);line-height:1.75;margin-top:6px}
.topic-card .arrow{
  position:absolute;right:16px;top:18px;color:var(--jade);font-size:14px;transition:transform .25s;
}
.topic-card:hover .arrow{transform:translate(2px,-2px)}
.topic-card.featured{background:rgba(60,140,126,.08);border-color:rgba(60,140,126,.35)}

/* stats dark band */
.stat-band{border-top:1px solid rgba(247,243,234,.12);border-bottom:1px solid rgba(247,243,234,.12)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-item{padding:8px 28px;border-left:1px solid rgba(247,243,234,.18)}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-num{font-family:var(--font-head);font-size:38px;line-height:1.1;color:#fff}
.stat-num em{font-style:normal;font-size:16px;margin-left:4px;color:var(--jade);font-family:var(--font-body)}
.stat-label{margin-top:8px;font-size:14px;color:rgba(247,243,234,.72);line-height:1.7}

/* scenes */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.scene-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh);position:relative;
  transition:transform .25s ease,box-shadow .25s ease;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover)}
.scene-card:nth-child(2){margin-top:16px}
.scene-avatar{
  width:46px;height:46px;border-radius:50%;background:rgba(60,140,126,.14);
  display:grid;place-items:center;color:var(--ink);font-family:var(--font-head);font-size:16px;
  border:1px solid rgba(60,140,126,.28);
}
.scene-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:14px}
.scene-meta strong{font-size:15px;color:var(--ink)}
.scene-card p{font-size:14.5px;color:var(--muted);line-height:1.85;margin-top:12px}
.scene-quote{
  position:absolute;left:20px;bottom:14px;font-family:var(--font-head);font-size:44px;
  color:rgba(30,61,54,.08);line-height:1;pointer-events:none;
}

/* audience chips */
.audience-wrap{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.audience-chip{
  display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--card);font-size:14.5px;color:var(--ink);
  box-shadow:var(--sh);transition:border-color .2s,transform .2s,background .2s;
}
.audience-chip:hover{border-color:rgba(60,140,126,.5);background:rgba(60,140,126,.07);transform:translateY(-1px)}
.audience-chip i{width:8px;height:8px;border-radius:50%;background:var(--jade);flex:0 0 8px}
.audience-foot{margin-top:24px;font-size:14.5px;color:var(--muted);line-height:1.9;display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* news cms */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--sh);
  transition:transform .25s ease,box-shadow .25s ease;height:100%;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover)}
.news-thumb{aspect-ratio:16/9;background:var(--sand);overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body .badge{align-self:flex-start}
.news-title{
  font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-desc{
  font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:10px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--muted);display:flex;justify-content:space-between;gap:10px;
}
.empty-card{
  grid-column:1 / -1;background:var(--card);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;color:var(--muted);font-size:14.5px;
}
.empty-card .empty-mark{
  width:56px;height:56px;margin:0 auto 14px;border-radius:14px;background:var(--sand);
  display:grid;place-items:center;color:var(--ink-light);font-family:var(--font-head);font-size:20px;
}

/* ranking */
.rank-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:start}
.rank-list{display:flex;flex-direction:column}
.rank-item{
  display:flex;align-items:flex-start;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);
  transition:background .2s;
}
.rank-item:first-child{padding-top:0}
.rank-num{
  font-family:var(--font-head);font-size:22px;color:var(--clay);min-width:38px;line-height:1.4;
}
.rank-body{min-width:0}
.rank-body a{font-size:15.5px;color:var(--ink);font-weight:600;line-height:1.55;transition:color .2s}
.rank-body a:hover{color:var(--ink-light)}
.rank-meta{font-size:12.5px;color:var(--muted);margin-top:4px;display:flex;gap:12px;flex-wrap:wrap}
.rank-empty{font-size:14px;color:var(--muted);padding:12px 0}
.bar-list{display:flex;flex-direction:column;gap:18px;margin-top:6px}
.bar-row .bar-top{display:flex;justify-content:space-between;font-size:14px;color:var(--ink);font-weight:600;margin-bottom:8px}
.bar-row .bar-top span{font-weight:400;font-size:12.5px;color:var(--muted)}
.bar-track{height:8px;border-radius:999px;background:var(--sand);overflow:hidden}
.bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--jade),var(--ink-light))}

/* guide accordion */
.guide-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:48px;align-items:start}
.acc{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.acc details{border-bottom:1px solid var(--line);transition:background .2s}
.acc details[open]{background:rgba(60,140,126,.05)}
.acc summary{
  list-style:none;cursor:pointer;padding:18px 34px 18px 18px;position:relative;
  font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color .2s;
}
.acc summary::-webkit-details-marker{display:none}
.acc summary::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;background:var(--ink);border-radius:2px;transition:height .25s ease;
}
.acc details[open] summary::before{height:22px}
.acc summary::after{
  content:"";position:absolute;right:12px;top:50%;width:8px;height:8px;
  border-right:2px solid var(--ink-light);border-bottom:2px solid var(--ink-light);
  transform:translateY(-70%) rotate(45deg);transition:transform .25s ease;
}
.acc details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.acc summary:hover{color:var(--ink-light)}
.acc .acc-body{padding:0 34px 20px 18px;font-size:14.5px;color:var(--muted);line-height:1.9}
.guide-index{font-size:13px;color:var(--muted);margin-bottom:8px;letter-spacing:.06em}

/* rules */
.rules-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 48px;margin-top:8px}
.rule-item{display:flex;gap:14px;padding:20px 0;border-bottom:1px solid rgba(30,61,54,.14)}
.rule-mark{
  width:12px;height:12px;border-radius:2px;background:var(--ink);margin-top:9px;flex:0 0 12px;
}
.rule-item h3{font-size:15.5px;color:var(--ink);font-weight:700;line-height:1.5}
.rule-item p{font-size:14px;color:var(--muted);line-height:1.8;margin-top:4px}

/* cta */
.cta-band{position:relative;overflow:hidden;background:var(--dark);color:var(--inverse)}
.cta-band .container{position:relative;z-index:2;max-width:760px;text-align:center}
.cta-band h2{font-family:var(--font-head);font-size:clamp(24px,2.8vw,32px);line-height:1.35;color:#fff}
.cta-band p{margin-top:14px;font-size:15.5px;color:rgba(247,243,234,.76);line-height:1.9}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:26px}
.cta-small{margin-top:18px;font-size:12.5px;color:rgba(247,243,234,.55);letter-spacing:.04em}
.cta-link{font-size:14.5px;color:var(--inverse);border-bottom:1px solid rgba(247,243,234,.5);padding-bottom:3px;transition:color .2s,border-color .2s}
.cta-link:hover{color:#fff;border-bottom-color:#fff}

/* footer */
.site-footer{background:var(--ink-deep);color:rgba(247,243,234,.76);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo-mark{background:rgba(247,243,234,.1);color:var(--paper)}
.footer-brand strong{display:block;font-family:var(--font-head);font-size:18px;color:var(--paper);line-height:1.4}
.footer-brand em{display:block;font-style:normal;font-size:11.5px;letter-spacing:.2em;color:rgba(247,243,234,.5);margin-top:4px}
.footer-brand p{font-size:14px;line-height:1.85;margin-top:16px;max-width:320px;color:rgba(247,243,234,.66)}
.footer-col h4{font-size:14px;color:var(--paper);font-weight:700;letter-spacing:.06em;margin-bottom:14px}
.footer-col a{display:block;font-size:14px;color:rgba(247,243,234,.68);padding:5px 0;transition:color .2s}
.footer-col a:hover{color:#fff}
.sub-form{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
.sub-form input{
  flex:1;min-width:150px;padding:11px 14px;border-radius:var(--r-btn);
  border:1px solid rgba(247,243,234,.22);background:rgba(247,243,234,.06);
  color:var(--paper);font-size:14px;font-family:inherit;transition:border-color .2s,background .2s;
}
.sub-form input::placeholder{color:rgba(247,243,234,.4)}
.sub-form input:focus{outline:2px solid var(--clay);outline-offset:2px;border-color:rgba(247,243,234,.4);background:rgba(247,243,234,.1)}
.sub-form input.err{border-color:#D06A50;background:rgba(208,106,80,.12)}
.sub-hint{font-size:12.5px;color:rgba(247,243,234,.45);margin-top:8px;line-height:1.7}
.sub-hint.error{color:#E39C87}
.footer-pattern{
  margin-top:48px;height:1px;
  background:repeating-linear-gradient(90deg,rgba(247,243,234,.16) 0 8px,transparent 8px 16px);
}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 26px;font-size:12.5px;color:rgba(247,243,234,.48);
}
.footer-bottom a{color:rgba(247,243,234,.62)}
.footer-bottom a:hover{color:#fff}

/* mobile bottom cta */
.mobile-cta-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(247,243,234,.97);border-top:1px solid var(--line);
  padding:10px 16px;gap:10px;align-items:center;justify-content:space-between;
  box-shadow:0 -8px 20px rgba(22,33,31,.08);
}
.mobile-cta-bar span{font-size:13px;color:var(--muted)}
.mobile-cta-bar .btn{padding:10px 18px;font-size:14px}

/* responsive */
@media (max-width:1199px){
  .container{padding:0 22px}
  .hero-inner{gap:36px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .main-nav{display:none}
  .burger{display:inline-flex}
  .hero{padding:52px 0 40px}
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .hero-photo{max-width:560px}
  .pain-grid,.guide-grid,.rank-grid{grid-template-columns:1fr;gap:32px}
  .solve-grid{grid-template-columns:1fr 1fr}
  .solve-card.big{grid-row:span 1;grid-column:1 / -1}
  .steps{grid-template-columns:1fr;gap:26px}
  .step::after{display:none}
  .topic-wall{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .dl-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr;gap:18px}
  .scene-card:nth-child(2){margin-top:0}
  .stat-grid{grid-template-columns:1fr 1fr;gap:24px}
  .stat-item{padding:8px 0 8px 20px}
  .stat-item:nth-child(odd){border-left:0;padding-left:0}
  .rules-grid{grid-template-columns:1fr;gap:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .nav-inner{height:60px}
  .nav-cta{display:none}
  .sec-title{font-size:24px}
  .sec-lead,.sec-desc{font-size:15px}
  .hero h1{margin:14px 0 12px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .hero-tags{gap:8px;margin-top:26px}
  .solve-grid{grid-template-columns:1fr}
  .topic-wall,.news-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr;gap:0}
  .stat-item{border-left:0;padding:16px 0;border-top:1px solid rgba(247,243,234,.14)}
  .stat-item:first-child{border-top:0;padding-top:0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .mobile-cta-bar{display:flex}
  body{padding-bottom:64px}
  .seal{width:62px;height:62px;font-size:12.5px}
  .pain-item{flex-wrap:wrap;gap:8px}
  .pain-link{margin-left:52px}
}
@media (max-width:480px){
  body{font-size:15px}
  .hero h1{font-size:26px}
  .sec-title{font-size:22px}
  .stat-num{font-size:30px}
  .dl-card{padding:20px}
  .scene-card,.news-body{padding:18px}
  .audience-chip{font-size:13.5px;padding:9px 16px}
  .cta-actions .btn{width:100%}
}

/* roulang page: article */
:root{
  --ink:#1E3D36;
  --ink-deep:#16211F;
  --ink-light:#2C5A4E;
  --jade:#3C8C7E;
  --clay:#C4663C;
  --paper:#F7F3EA;
  --card:#FFFFFF;
  --sand:#F1EADC;
  --dark:#16211F;
  --line:#E2DBCB;
  --text:#1F2A28;
  --muted:#6B7A75;
  --inverse:#F7F3EA;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --sh:0 1px 2px rgba(22,33,31,.06);
  --sh-hover:0 12px 28px rgba(22,33,31,.12);
  --font-head:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-body:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--ink);text-decoration:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-head);font-weight:700;line-height:1.3;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
svg{display:block}
:focus-visible{outline:2px solid var(--clay);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
.section{padding:88px 0}
.section-paper{background:var(--paper)}
.section-white{background:var(--card)}
.section-sand{background:var(--sand)}
.section-dark{background:var(--dark);color:var(--inverse)}
.sec-title{
  font-family:var(--font-head);
  font-size:30px;line-height:1.3;font-weight:700;color:var(--ink);
  position:relative;padding-left:16px;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.45em;width:4px;height:18px;
  background:var(--ink);border-radius:2px;
}
.section-dark .sec-title{color:var(--inverse)}
.section-dark .sec-title::before{background:var(--jade)}
.sec-lead{margin-top:14px;font-size:16px;line-height:1.9;color:var(--muted);max-width:720px}
.section-dark .sec-lead{color:rgba(247,243,234,.72)}
/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;
  transition:background .22s ease,color .22s ease,transform .18s ease,box-shadow .22s ease,border-color .22s ease;
}
.btn-primary{background:var(--ink);color:#fff;box-shadow:0 1px 2px rgba(22,33,31,.14)}
.btn-primary:hover{background:var(--ink-light);transform:translateY(-1px);box-shadow:var(--sh-hover)}
.btn-primary:active{transform:translateY(0);box-shadow:0 1px 2px rgba(22,33,31,.14)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:rgba(30,61,54,.08);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-light{background:var(--paper);color:var(--ink)}
.btn-light:hover{background:#fff;transform:translateY(-1px);box-shadow:0 12px 28px rgba(0,0,0,.24)}
.btn-sm{padding:9px 16px;font-size:14px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:var(--r-pill);
  font-size:12px;line-height:1.8;background:var(--sand);color:var(--ink);border:1px solid var(--line);
}
.badge-jade{background:rgba(60,140,126,.12);border-color:rgba(60,140,126,.3);color:var(--ink-light)}
.text-link{
  display:inline-block;color:var(--ink);font-weight:600;font-size:14.5px;
  border-bottom:1px solid var(--jade);padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease;
}
.text-link:hover{color:var(--clay);border-color:var(--clay)}
.text-link-light{color:var(--inverse);border-color:rgba(247,243,234,.5)}
.text-link-light:hover{color:#fff;border-color:#fff}
/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,243,234,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 8px 20px rgba(22,33,31,.07)}
.nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:10px;min-width:0}
.logo-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:10px;background:var(--ink);color:var(--paper);
  display:grid;place-items:center;font-family:var(--font-head);font-size:14px;letter-spacing:.04em;
}
.logo strong{display:block;font-family:var(--font-head);font-size:17px;line-height:1.25;color:var(--ink);white-space:nowrap}
.logo em{display:block;font-style:normal;font-size:11px;letter-spacing:.2em;color:var(--muted);line-height:1.4;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:22px}
.main-nav a{position:relative;font-size:15px;color:var(--text);padding:6px 0;transition:color .2s ease}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--jade);
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;border-radius:2px;
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after,.main-nav a[aria-current="page"]::after{transform:scaleX(1)}
.main-nav a[aria-current="page"]{color:var(--ink);font-weight:600}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-cta{padding:11px 20px;font-size:14.5px;box-shadow:inset 0 1px 0 rgba(255,255,255,.14),0 1px 2px rgba(22,33,31,.16)}
.nav-toggle{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--card);border-radius:10px;color:var(--ink);
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle:hover{border-color:var(--ink);background:var(--sand)}
/* 抽屉 */
.drawer{position:fixed;inset:0;z-index:90;visibility:hidden;pointer-events:none}
.drawer.open{visibility:visible;pointer-events:auto}
.drawer-mask{position:absolute;inset:0;background:rgba(22,33,31,.45);opacity:0;transition:opacity .25s ease}
.drawer.open .drawer-mask{opacity:1}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(340px,86vw);background:var(--paper);
  padding:22px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(100%);transition:transform .3s ease;overflow-y:auto;
}
.drawer.open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;gap:12px}
.drawer-close{
  width:40px;height:40px;flex:0 0 40px;border-radius:10px;border:1px solid var(--line);
  background:var(--card);font-size:16px;color:var(--ink);
  transition:border-color .2s ease,background .2s ease;
}
.drawer-close:hover{border-color:var(--ink);background:var(--sand)}
.drawer-panel a.d-link{display:block;padding:15px 2px;font-size:18px;color:var(--text);border-bottom:1px solid var(--line);transition:color .2s ease}
.drawer-panel a.d-link:hover{color:var(--ink)}
.drawer-cta{margin-top:auto;padding-top:18px}
.drawer-cta .btn{width:100%}
/* 面包屑带 */
.crumb-bar{background:var(--sand);padding:18px 0;border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted)}
.breadcrumb a{color:var(--ink-light);border-bottom:1px solid rgba(60,140,126,.45);padding-bottom:1px;transition:color .2s ease,border-color .2s ease}
.breadcrumb a:hover{color:var(--clay);border-color:var(--clay)}
.breadcrumb .sep{color:rgba(107,122,117,.55);font-size:12px}
.breadcrumb .current{color:var(--muted);max-width:52vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* 文章头部 */
.article-head-section{padding:56px 0 44px}
.article-head{max-width:860px;min-width:0}
.head-top{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;flex-wrap:wrap}
.share-group{display:flex;gap:8px;flex:0 0 auto}
.icon-btn{
  width:38px;height:38px;display:grid;place-items:center;border-radius:10px;
  border:1px solid var(--line);background:var(--card);color:var(--ink-light);
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .18s ease,box-shadow .2s ease;
}
.icon-btn:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-1px);box-shadow:var(--sh-hover)}
.icon-btn.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.article-title{font-size:clamp(26px,3vw,40px);margin:16px 0 0;line-height:1.36;overflow-wrap:break-word}
.article-abstract{
  margin-top:20px;padding:16px 20px;background:var(--paper);
  border-left:4px solid var(--jade);border-radius:0 10px 10px 0;
  font-size:15.5px;line-height:1.9;color:var(--ink-light);
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:22px;font-size:13.5px;color:var(--muted)}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#c9c1b0}
/* 阅读区 */
.reading-wrap{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:48px;align-items:start}
.article-body{max-width:760px;min-width:0;font-size:16.5px;line-height:1.9;color:var(--text)}
.article-body h2{font-size:28px;margin:40px 0 16px;position:relative;padding-left:14px;line-height:1.4}
.article-body h2::before{content:"";position:absolute;left:0;top:.38em;width:4px;height:18px;background:var(--ink);border-radius:2px}
.article-body h3{font-size:22px;margin:32px 0 12px;line-height:1.45}
.article-body h4{font-size:18px;margin:24px 0 10px;line-height:1.5}
.article-body p{margin:0 0 1.2em;line-height:1.9}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding:0}
.article-body ul li{position:relative;padding-left:18px;margin:0 0 .55em}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.78em;width:6px;height:6px;background:var(--jade);border-radius:1px}
.article-body ol{counter-reset:li}
.article-body ol li{position:relative;padding-left:28px;margin:0 0 .55em;counter-increment:li}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.18em;width:20px;height:20px;border-radius:50%;
  background:var(--sand);border:1px solid var(--line);color:var(--ink-light);
  font-size:12px;font-weight:600;display:grid;place-items:center;line-height:1;
}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--sand);
  border-left:4px solid var(--ink);border-radius:0 10px 10px 0;color:var(--ink-light);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:20px 0}
.article-body figure{margin:20px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;line-height:1.7}
.article-body th{background:var(--sand);border:1px solid var(--line);padding:10px 12px;text-align:left;font-weight:600;color:var(--ink)}
.article-body td{border:1px solid var(--line);padding:10px 12px}
.article-body tbody tr:nth-child(even) td{background:rgba(241,234,220,.45)}
.article-body a{color:var(--ink-light);border-bottom:1px solid rgba(60,140,126,.5);transition:color .2s ease,border-color .2s ease}
.article-body a:hover{color:var(--clay);border-color:var(--clay)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body code{background:var(--sand);border:1px solid var(--line);border-radius:5px;padding:1px 6px;font-size:14px}
.article-empty{padding:48px 0;text-align:center}
.article-empty h2{font-size:24px;margin:0 0 12px}
.article-empty p{color:var(--muted);margin-bottom:22px}
/* 目录 */
.toc{position:sticky;top:100px;align-self:start;border-left:1px solid var(--line);padding-left:18px;max-height:calc(100vh - 140px);overflow:auto}
.toc h3{font-family:var(--font-body);font-size:12px;font-weight:600;letter-spacing:.18em;color:var(--muted);margin-bottom:12px}
.toc ol{display:flex;flex-direction:column;gap:2px}
.toc a{
  display:block;font-size:14px;line-height:1.6;color:var(--muted);
  padding:6px 0 6px 11px;margin-left:-12px;border-left:2px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.toc a:hover{color:var(--ink)}
.toc a.active{color:var(--ink);font-weight:600;border-left-color:var(--clay)}
/* 标签 */
.tag-block{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.tag-title{font-family:var(--font-body);font-size:15px;font-weight:600;color:var(--muted);letter-spacing:.04em}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  padding:6px 14px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--sand);font-size:13px;color:var(--ink-light);
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.tag:hover{border-color:var(--jade);color:var(--ink);background:#fff}
/* 版块说明卡 */
.author-card{
  display:flex;gap:24px;align-items:flex-start;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);padding:30px;
  box-shadow:var(--sh);transition:box-shadow .22s ease,transform .22s ease;
}
.author-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px)}
.author-avatar{
  width:64px;height:64px;flex:0 0 64px;border-radius:50%;background:var(--ink);color:var(--paper);
  display:grid;place-items:center;font-family:var(--font-head);font-size:16px;letter-spacing:.04em;
}
.author-info{min-width:0}
.author-info h2{font-size:21px;line-height:1.45}
.author-info p{margin-top:12px;font-size:15px;line-height:1.9;color:var(--muted)}
/* 相关推荐 */
.rec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap}
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:32px}
.rec-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rec-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#cfc6b2}
.rec-thumb{aspect-ratio:16/9;background:var(--sand);overflow:hidden}
.rec-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0}
.rec-body{padding:16px 18px 20px}
.rec-card h3{font-size:17px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rec-time{display:block;margin-top:12px;font-size:12.5px;color:var(--muted)}
.rec-empty{
  margin-top:28px;padding:28px;text-align:center;border:1px dashed var(--line);
  border-radius:var(--r-card);background:var(--card);color:var(--muted);font-size:15px;
}
/* 守则清单 */
.guide-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px;margin-top:28px}
.guide-item{display:flex;gap:12px;padding:18px 0;border-top:1px solid var(--line)}
.guide-dot{width:8px;height:8px;flex:0 0 8px;margin-top:.7em;background:var(--jade);border-radius:1px}
.guide-item h3{font-family:var(--font-body);font-size:15.5px;font-weight:600;line-height:1.6}
.guide-item p{margin-top:5px;font-size:14px;line-height:1.8;color:var(--muted)}
/* 结尾转化 */
.cta-band{padding:76px 0}
.cta-inner{max-width:720px;margin:0 auto;text-align:center}
.cta-inner h2{font-size:clamp(24px,2.6vw,32px);color:var(--inverse);line-height:1.4}
.cta-inner p{margin-top:14px;font-size:15.5px;line-height:1.9;color:rgba(247,243,234,.76)}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;align-items:center;margin-top:28px}
/* 页脚 */
.site-footer{background:var(--dark);color:rgba(247,243,234,.78);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo-mark{background:var(--paper);color:var(--ink)}
.footer-brand .logo strong{color:var(--inverse)}
.footer-brand .logo em{color:rgba(247,243,234,.6)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:rgba(247,243,234,.66);max-width:330px}
.footer-col h4{font-family:var(--font-body);font-size:14px;font-weight:600;color:var(--inverse);letter-spacing:.06em;margin-bottom:14px}
.footer-col a{display:block;font-size:14px;color:rgba(247,243,234,.7);padding:5px 0;transition:color .2s ease}
.footer-col a:hover{color:#fff}
.sub-form{display:flex;gap:8px;margin-top:14px}
.sub-form input{
  flex:1;min-width:0;padding:10px 12px;border-radius:var(--r-btn);
  border:1px solid rgba(247,243,234,.22);background:rgba(247,243,234,.08);
  color:var(--inverse);font-size:14px;
  transition:border-color .2s ease,background .2s ease;
}
.sub-form input::placeholder{color:rgba(247,243,234,.5)}
.sub-form input:focus{outline:none;border-color:var(--jade);background:rgba(247,243,234,.14)}
.sub-form.error input{border-color:#D9705B}
.sub-hint{font-size:12px;color:rgba(247,243,234,.55);margin-top:8px}
.sub-hint.error{color:#E8977F}
.footer-pattern{height:1px;margin:48px 0 0;background:repeating-linear-gradient(90deg,rgba(247,243,234,.22) 0 8px,transparent 8px 16px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding:20px 0 28px;font-size:13px;color:rgba(247,243,234,.55);
}
.footer-bottom a{color:rgba(247,243,234,.7);transition:color .2s ease}
.footer-bottom a:hover{color:#fff}
/* 移动端贴底条 */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  align-items:center;justify-content:space-between;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(247,243,234,.97);border-top:1px solid var(--line);
  box-shadow:0 -6px 18px rgba(22,33,31,.08);
}
.sticky-cta span{font-size:13.5px;color:var(--muted);line-height:1.5}
@media (max-width:1199px){
  .reading-wrap{grid-template-columns:minmax(0,1fr);gap:0}
  .toc{display:none}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .section{padding:72px 0}
  .article-head-section{padding:44px 0 34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .rec-grid{grid-template-columns:1fr 1fr}
  .guide-grid{grid-template-columns:1fr;gap:0}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .nav-inner{height:60px}
  .logo-mark{width:36px;height:36px;flex:0 0 36px;font-size:13px}
  .logo strong{font-size:15.5px}
  .logo em{font-size:10px;letter-spacing:.16em}
  .sec-title{font-size:24px}
  .article-title{font-size:25px}
  .article-abstract{padding:14px 16px;font-size:15px}
  .breadcrumb .current{max-width:70vw}
  .rec-grid{grid-template-columns:1fr}
  .author-card{flex-direction:column;padding:22px;gap:16px}
  .author-avatar{width:54px;height:54px;flex:0 0 54px;font-size:14px}
  .cta-band{padding:56px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{justify-content:flex-start}
  .sticky-cta{display:flex}
  body{padding-bottom:66px}
  .article-body{font-size:16px}
  .article-body h2{font-size:23px;margin:32px 0 14px}
  .article-body h3{font-size:19px}
  .article-body table{font-size:14px}
  .head-top{flex-direction:column-reverse;align-items:flex-start}
}
@media (max-width:480px){
  .article-title{font-size:22px}
  .sec-title{font-size:22px}
  .btn{padding:11px 18px;font-size:14.5px}
  .badge{font-size:11.5px}
  .tag{padding:5px 12px;font-size:12.5px}
}

/* roulang page: category1 */
:root{
  --ink:#1E3D36;
  --ink-deep:#16211F;
  --ink-light:#2C5A4E;
  --jade:#3C8C7E;
  --clay:#C4663C;
  --paper:#F7F3EA;
  --card:#FFFFFF;
  --sand:#F1EADC;
  --dark:#16211F;
  --line:#E2DBCB;
  --text:#1F2A28;
  --muted:#6B7A75;
  --inverse:#F7F3EA;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --sh:0 1px 2px rgba(22,33,31,.06);
  --sh-hover:0 12px 28px rgba(22,33,31,.12);
  --font-head:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-body:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--ink);text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-family:var(--font-head);color:var(--ink);line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
.section{padding:88px 0}
.section-paper{background:var(--paper)}
.section-white{background:var(--card)}
.section-sand{background:var(--sand)}
.section-dark{background:var(--dark);color:var(--inverse)}
.sec-title{
  font-family:var(--font-head);
  font-size:30px;line-height:1.3;font-weight:700;color:var(--ink);
  position:relative;padding-left:16px;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.45em;width:4px;height:18px;
  background:var(--ink);border-radius:2px;
}
.section-dark .sec-title{color:var(--inverse)}
.section-dark .sec-title::before{background:var(--jade)}
.sec-lead{margin-top:14px;font-size:16px;line-height:1.9;color:var(--muted);max-width:720px}
.section-dark .sec-lead{color:rgba(247,243,234,.72)}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background .22s ease,color .22s ease,transform .18s ease,box-shadow .22s ease,border-color .22s ease;
}
.btn-primary{background:var(--ink);color:#fff;box-shadow:0 1px 2px rgba(22,33,31,.14)}
.btn-primary:hover{background:var(--ink-light);transform:translateY(-1px);box-shadow:var(--sh-hover)}
.btn-primary:active{transform:translateY(0);box-shadow:0 1px 2px rgba(22,33,31,.14)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:rgba(30,61,54,.08);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-light{background:var(--paper);color:var(--ink)}
.btn-light:hover{background:#fff;transform:translateY(-1px);box-shadow:0 12px 28px rgba(0,0,0,.24)}
.btn-sm{padding:9px 16px;font-size:14px}
a:focus-visible,button:focus-visible,input:focus-visible,.post-card:focus-visible,.entry:focus-visible{
  outline:2px solid var(--clay);outline-offset:2px;border-radius:6px;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:var(--r-pill);
  font-size:12px;line-height:1.8;background:var(--sand);color:var(--ink);border:1px solid var(--line);
}
.badge-jade{background:rgba(60,140,126,.12);border-color:rgba(60,140,126,.3);color:var(--ink-light)}

/* header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,243,234,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 8px 20px rgba(22,33,31,.07)}
.nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:10px;min-width:0}
.logo-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:10px;background:var(--ink);color:var(--paper);
  display:grid;place-items:center;font-family:var(--font-head);font-size:15px;letter-spacing:.04em;
}
.logo-text strong{display:block;font-family:var(--font-head);font-size:17px;line-height:1.25;color:var(--ink);white-space:nowrap}
.logo-text span{display:block;font-size:11px;letter-spacing:.2em;color:var(--muted);line-height:1.4}
.main-nav{display:flex;align-items:center;gap:22px}
.main-nav a{position:relative;font-size:15px;color:var(--text);padding:6px 0;transition:color .2s}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--jade);
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;border-radius:2px;
}
.main-nav a:hover{color:var(--ink)}
.main-nav a:hover::after,.main-nav a[aria-current="page"]::after{transform:scaleX(1)}
.main-nav a[aria-current="page"]{color:var(--ink);font-weight:600}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-cta{padding:11px 20px;font-size:14.5px;box-shadow:inset 0 1px 0 rgba(255,255,255,.14),0 1px 2px rgba(22,33,31,.16)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:var(--card);color:var(--ink);cursor:pointer;place-items:center;
}
.nav-toggle:hover{background:#fff;border-color:var(--ink)}

/* drawer */
.drawer{position:fixed;inset:0;z-index:90;visibility:hidden;pointer-events:none}
.drawer.open{visibility:visible;pointer-events:auto}
.drawer-mask{position:absolute;inset:0;background:rgba(22,33,31,.45);opacity:0;transition:opacity .25s}
.drawer.open .drawer-mask{opacity:1}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(340px,86vw);background:var(--paper);
  padding:22px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(100%);transition:transform .3s ease;overflow-y:auto;
}
.drawer.open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--card);font-size:18px;color:var(--ink);cursor:pointer}
.drawer-panel a.d-link{display:block;padding:15px 2px;font-size:18px;color:var(--text);border-bottom:1px solid var(--line)}
.drawer-panel a.d-link:hover{color:var(--ink)}
.drawer-cta{margin-top:auto;padding-top:18px}
.drawer-cta .btn{width:100%}

/* page head */
.page-head{position:relative;background:var(--card);border-bottom:1px solid var(--line);padding:30px 0 34px;overflow:hidden}
.page-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:url('/assets/images/40217e145d97b225.webp') center/cover no-repeat;opacity:.06;
}
.page-head .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .cur{color:var(--ink)}
.page-head-grid{display:grid;grid-template-columns:1fr 280px;gap:40px;align-items:start}
.page-head h1{font-size:clamp(25px,2.6vw,34px);line-height:1.35;color:var(--ink);font-weight:700}
.page-lead{margin-top:12px;font-size:15.5px;line-height:1.9;color:var(--muted);max-width:680px}
.glance{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);padding:16px 18px;box-shadow:var(--sh)}
.glance h2{font-family:var(--font-body);font-size:13px;font-weight:600;letter-spacing:.1em;color:var(--muted);margin-bottom:10px}
.glance li{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;padding:7px 0;border-bottom:1px dashed var(--line);color:var(--muted)}
.glance li:last-child{border-bottom:none}
.glance b{color:var(--ink);font-weight:600;white-space:nowrap}

/* split */
.split{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center}
.split-figure{margin:0}
.split-figure img{width:100%;aspect-ratio:3/2;object-fit:cover;background:var(--sand);border-radius:var(--r-img)}
.split-figure figcaption{margin-top:10px;font-size:12.5px;color:var(--muted);line-height:1.7}
.point-list{margin-top:22px}
.point-list li{position:relative;padding:14px 0 14px 22px;border-top:1px solid var(--line)}
.point-list li:last-child{border-bottom:1px solid var(--line)}
.point-list li::before{content:"";position:absolute;left:0;top:22px;width:8px;height:8px;border-radius:2px;background:var(--jade)}
.point-list b{display:block;font-size:15.5px;font-weight:600;color:var(--ink)}
.point-list span{display:block;font-size:14px;color:var(--muted);line-height:1.8;margin-top:2px}

/* post list */
.post-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:36px}
.post-card{
  display:grid;grid-template-columns:180px 1fr;gap:18px;padding:16px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#D8CFBA}
.post-thumb{aspect-ratio:4/3;overflow:hidden;border-radius:10px;background:var(--sand)}
.post-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{min-width:0;display:flex;flex-direction:column}
.post-title{
  font-size:17px;line-height:1.5;color:var(--ink);margin:8px 0 6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-excerpt{
  font-size:13.5px;line-height:1.7;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-time{margin-top:auto;padding-top:10px;font-size:12.5px;color:var(--muted)}
.empty-state{
  margin-top:36px;padding:48px 24px;text-align:center;background:var(--card);
  border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-state .empty-mark{
  width:52px;height:52px;margin:0 auto 14px;border-radius:14px;background:var(--sand);
  display:grid;place-items:center;color:var(--ink);font-family:var(--font-head);font-size:18px;
}
.empty-state p{font-size:14px;color:var(--muted)}

/* tags */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;max-width:900px}
.tag{
  padding:8px 16px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--card);font-size:14px;color:var(--text);transition:border-color .2s,color .2s;
}
.tag:hover{border-color:var(--jade);color:var(--ink)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:36px}
.step{position:relative;padding-right:10px}
.step-num{
  width:34px;height:34px;border-radius:50%;background:var(--card);border:1px solid var(--ink);
  color:var(--ink);display:grid;place-items:center;font-family:var(--font-head);font-size:14px;
}
.step h3{font-size:17px;margin:14px 0 8px}
.step p{font-size:14px;line-height:1.8;color:var(--muted)}
.step::after{content:"";position:absolute;top:17px;left:46px;right:0;height:1px;background:var(--line)}
.step:last-child::after{display:none}

/* rules */
.rules-wrap{margin-top:44px;padding-top:8px;border-top:1px solid var(--line)}
.rules-wrap h3{font-size:19px;margin:20px 0 6px}
.rules-wrap .rules-lead{font-size:14px;color:var(--muted);margin-bottom:8px}
.rules{display:grid;grid-template-columns:1fr 1fr;gap:0 40px}
.rule{display:flex;gap:12px;padding:16px 0;border-bottom:1px solid var(--line)}
.rule-mark{width:8px;height:8px;flex:0 0 8px;border-radius:2px;background:var(--clay);margin-top:10px}
.rule b{display:block;font-size:15px;font-weight:600;color:var(--ink)}
.rule p{font-size:13.5px;line-height:1.75;color:var(--muted)}

/* feature */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px}
.feature-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#D8CFBA}
.feature-thumb{aspect-ratio:16/9;background:var(--sand);overflow:hidden}
.feature-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease}
.feature-card:hover .feature-thumb img{transform:scale(1.04)}
.feature-body{padding:18px 20px 20px}
.feature-body h3{
  font-size:16.5px;line-height:1.5;margin:10px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.feature-body .f-time{font-size:12.5px;color:var(--muted)}

/* faq */
.faq-layout{display:grid;grid-template-columns:300px 1fr;gap:56px;align-items:start}
.faq-list{padding-left:16px}
.faq-item{position:relative;border-bottom:1px solid var(--line)}
.faq-item.open::before{content:"";position:absolute;left:-16px;top:16px;bottom:16px;width:3px;border-radius:2px;background:var(--clay)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;background:none;border:0;text-align:left;cursor:pointer;
  font-family:var(--font-body);font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-q:hover{color:var(--ink-light)}
.faq-q .ico{flex:0 0 18px;color:var(--muted);transition:transform .25s ease}
.faq-item.open .ico{transform:rotate(180deg);color:var(--ink)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:420px}
.faq-a p{padding:0 0 18px;font-size:14.5px;line-height:1.85;color:var(--muted);max-width:660px}

/* entry */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:34px}
.entry{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:15px 20px;border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--card);font-size:15px;color:var(--text);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease,color .2s ease;
}
.entry:hover{transform:translateY(-2px);border-color:var(--ink);color:var(--ink);box-shadow:var(--sh-hover)}
.entry .arrow{color:var(--muted);transition:transform .2s ease,color .2s ease}
.entry:hover .arrow{transform:translateX(3px);color:var(--ink)}

/* download strip */
.dl-strip{background:var(--dark);color:var(--inverse);padding:56px 0}
.dl-inner{display:grid;grid-template-columns:1fr 1.25fr;gap:44px;align-items:center}
.dl-inner h2{font-size:26px;color:var(--inverse);position:relative;padding-left:16px}
.dl-inner h2::before{content:"";position:absolute;left:0;top:.45em;width:4px;height:18px;background:var(--jade);border-radius:2px}
.dl-inner p{margin-top:12px;font-size:14.5px;line-height:1.9;color:rgba(247,243,234,.7);max-width:400px}
.dl-btns{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.dl-btn{
  display:flex;flex-direction:column;gap:8px;padding:18px;
  border-radius:var(--r-card);border:1px solid rgba(247,243,234,.22);
  background:rgba(247,243,234,.05);color:var(--inverse);
  transition:background .22s ease,transform .2s ease,border-color .22s ease;
}
.dl-btn:hover{background:rgba(247,243,234,.13);transform:translateY(-2px);border-color:rgba(247,243,234,.5)}
.dl-btn:active{transform:translateY(0)}
.dl-btn .dl-ico{width:26px;height:26px;color:var(--jade)}
.dl-btn strong{font-size:15px;font-weight:600;font-family:var(--font-body)}
.dl-btn span{font-size:12px;color:rgba(247,243,234,.6);line-height:1.6}

/* footer */
.site-footer{background:var(--dark);color:rgba(247,243,234,.78);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand .logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .logo-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:10px;background:rgba(247,243,234,.1);
  color:var(--paper);display:grid;place-items:center;font-family:var(--font-head);font-size:15px;
}
.footer-brand strong{display:block;font-family:var(--font-head);font-size:17px;line-height:1.3;color:var(--inverse)}
.footer-brand em{display:block;font-style:normal;font-size:11px;letter-spacing:.2em;color:rgba(247,243,234,.58);line-height:1.5}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(247,243,234,.66);max-width:330px}
.footer-col h4{font-family:var(--font-head);font-size:15px;color:var(--inverse);margin-bottom:14px}
.footer-col a{display:block;font-size:14px;color:rgba(247,243,234,.72);padding:5px 0;transition:color .2s ease}
.footer-col a:hover{color:#fff}
.sub-form{display:flex;gap:8px;margin-top:12px}
.sub-form input{
  flex:1;min-width:0;padding:10px 12px;border-radius:var(--r-btn);
  border:1px solid rgba(247,243,234,.24);background:rgba(247,243,234,.06);
  color:var(--inverse);font-size:14px;font-family:inherit;transition:border-color .2s,box-shadow .2s;
}
.sub-form input::placeholder{color:rgba(247,243,234,.45)}
.sub-form input:focus{outline:none;border-color:var(--jade);box-shadow:0 0 0 3px rgba(60,140,126,.25)}
.sub-hint{font-size:12px;margin-top:8px;color:rgba(247,243,234,.5);line-height:1.7}
.sub-hint.error{color:#E9A88F}
.footer-pattern{
  height:1px;margin:48px 0 0;
  background:repeating-linear-gradient(90deg,rgba(247,243,234,.18) 0 8px,transparent 8px 16px);
  opacity:.55;
}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding:22px 0 26px;font-size:13px;color:rgba(247,243,234,.55);
}
.footer-bottom a{color:rgba(247,243,234,.72)}
.footer-bottom a:hover{color:#fff}

/* mobile sticky bar */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(247,243,234,.97);border-top:1px solid var(--line);
  padding:10px 16px;gap:12px;align-items:center;justify-content:space-between;
  box-shadow:0 -6px 18px rgba(22,33,31,.08);
}
.mobile-bar .btn{flex:1}
.mobile-bar .bar-link{font-size:13px;color:var(--muted);white-space:nowrap}

/* responsive */
@media (max-width:1199px){
  .split{gap:36px}
  .post-card{grid-template-columns:150px 1fr}
  .faq-layout{grid-template-columns:260px 1fr;gap:40px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .main-nav{display:none}
  .nav-toggle{display:grid}
  .page-head-grid{grid-template-columns:1fr;gap:22px}
  .glance{max-width:420px}
  .split{grid-template-columns:1fr;gap:28px}
  .split-figure img{aspect-ratio:16/9}
  .post-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr;gap:28px 24px}
  .step:nth-child(2)::after{display:none}
  .feature-grid{grid-template-columns:1fr 1fr}
  .faq-layout{grid-template-columns:1fr;gap:22px}
  .entry-grid{grid-template-columns:1fr 1fr}
  .dl-inner{grid-template-columns:1fr;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .container{padding:0 18px}
  .nav-inner{height:60px}
  .logo-mark{width:36px;height:36px;flex-basis:36px;font-size:14px}
  .logo-text strong{font-size:15.5px}
  .logo-text span{font-size:10px;letter-spacing:.16em}
  .nav-cta{display:none}
  .sec-title{font-size:24px}
  .page-head{padding:22px 0 26px}
  .page-head h1{font-size:23px}
  .page-lead{font-size:14.5px}
  .post-card{grid-template-columns:1fr;gap:14px}
  .post-thumb{aspect-ratio:16/9}
  .steps{grid-template-columns:1fr;gap:22px}
  .step{padding-left:0}
  .step::after{display:none}
  .rules{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .entry-grid{grid-template-columns:1fr}
  .dl-btns{grid-template-columns:1fr}
  .dl-inner h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .mobile-bar{display:flex}
  body{padding-bottom:70px}
}
@media (max-width:480px){
  body{font-size:15.5px}
  .sec-title{font-size:22px}
  .page-head h1{font-size:21px}
  .post-title{font-size:16px}
  .faq-q{font-size:15px}
  .footer-bottom{font-size:12px}
}