/* roulang page: index */
:root{
  --ink-900:#0B1512;
  --ink-800:#12241F;
  --brand:#C8FA4B;
  --brand-deep:#A8DC22;
  --accent:#FF6B2C;
  --paper:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E3E6DF;
  --muted:#6B7472;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(11,21,18,.06);
  --shadow-2:0 10px 28px rgba(11,21,18,.10);
  --head-h:104px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
a:hover{text-decoration:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-0.02em;line-height:1.28;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(200,250,75,.75);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}

/* ============ header ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:transparent;
  transition:background .25s ease, box-shadow .25s ease, border-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:var(--ink-900);
  border-bottom:1px solid rgba(227,230,223,.14);
  box-shadow:0 8px 24px rgba(11,21,18,.28);
}
.topbar{border-bottom:1px solid rgba(227,230,223,.12);}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:36px;padding-top:6px;padding-bottom:6px;
  font-size:13px;color:rgba(247,246,242,.78);
}
.topbar-note{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-right{display:flex;align-items:center;gap:14px;flex-wrap:nowrap;}
.status-badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:3px 11px;border-radius:999px;
  background:rgba(200,250,75,.14);
  color:var(--brand);
  font-size:12.5px;line-height:1.6;white-space:nowrap;
}
.status-badge i{width:6px;height:6px;border-radius:999px;background:var(--brand);display:block;}
.status-badge.is-accent{background:rgba(255,107,44,.14);color:#FFB98F;}
.status-badge.is-accent i{background:var(--accent);}
.countdown{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;}
.countdown b{color:var(--brand);font-weight:700;font-size:13.5px;letter-spacing:.02em;}
.navwrap{background:transparent;}
.nav-inner{display:flex;align-items:center;gap:22px;min-height:66px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--brand);color:var(--ink-900);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;letter-spacing:-.04em;
  box-shadow:0 4px 14px rgba(200,250,75,.28);
}
.brand-text{color:#fff;font-weight:800;font-size:17.5px;letter-spacing:-.02em;white-space:nowrap;}
.main-nav{display:none;align-items:center;gap:4px;margin-left:6px;}
.main-nav a{
  padding:9px 13px;border-radius:var(--radius-btn);
  color:rgba(247,246,242,.78);font-size:15px;font-weight:500;
  transition:color .18s ease,background .18s ease;
}
.main-nav a:hover{color:#fff;background:rgba(247,246,242,.08);}
.main-nav a.active{color:var(--brand);background:rgba(200,250,75,.10);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-status{display:none;}
.menu-toggle{
  width:44px;height:44px;border-radius:var(--radius-btn);
  display:flex;align-items:center;justify-content:center;
  color:#fff;background:rgba(247,246,242,.10);
  transition:background .18s ease;
}
.menu-toggle:hover{background:rgba(247,246,242,.18);}
.menu-toggle svg{width:20px;height:20px;}
@media (min-width:1024px){
  .main-nav{display:flex;}
  .menu-toggle{display:none;}
  .nav-status{display:inline-flex;}
}
.drawer{
  position:fixed;inset:0;z-index:70;display:none;
}
.drawer.open{display:block;}
.drawer-mask{position:absolute;inset:0;background:rgba(11,21,18,.62);}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(86vw,340px);
  background:var(--ink-900);border-left:1px solid rgba(227,230,223,.14);
  padding:22px 20px;display:flex;flex-direction:column;gap:18px;
  overflow-y:auto;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:44px;height:44px;border-radius:var(--radius-btn);background:rgba(247,246,242,.10);display:flex;align-items:center;justify-content:center;color:#fff;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  padding:13px 14px;border-radius:var(--radius-btn);color:rgba(247,246,242,.86);
  font-size:16px;min-height:44px;display:flex;align-items:center;
  border:1px solid transparent;
}
.drawer-nav a:hover{background:rgba(247,246,242,.08);}
.drawer-nav a.active{color:var(--brand);background:rgba(200,250,75,.10);border-color:rgba(200,250,75,.28);}
.drawer-meta{display:flex;flex-wrap:wrap;gap:10px;}
.drawer-cta{margin-top:auto;}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;letter-spacing:-.01em;
  border:1px solid transparent;
  transition:transform .18s ease,background .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--brand);color:var(--ink-900);box-shadow:0 6px 18px rgba(200,250,75,.22);}
.btn-primary:hover{background:var(--brand-deep);box-shadow:0 10px 24px rgba(200,250,75,.28);}
.btn-ghost{border-color:rgba(247,246,242,.28);color:#F7F6F2;background:rgba(247,246,242,.04);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(200,250,75,.08);}
.btn-dark{background:var(--ink-900);color:#fff;}
.btn-dark:hover{background:var(--ink-800);}
.btn-outline{border-color:var(--line);color:var(--ink-900);background:var(--surface);}
.btn-outline:hover{border-color:rgba(200,250,75,.6);color:var(--ink-900);}
.btn-sm{min-height:38px;padding:8px 15px;font-size:14px;}

/* ============ hero ============ */
.hero-shell{
  position:relative;background:var(--ink-900);color:#F7F6F2;overflow:hidden;
  padding-top:calc(var(--head-h) + 46px);
  padding-bottom:72px;
}
.hero-shell::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.20;
}
.hero-shell::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(200,250,75,.10) 0 2px,transparent 2px 16px);
  opacity:.55;pointer-events:none;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:38px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  padding:6px 13px;border-radius:999px;
  background:rgba(200,250,75,.12);border:1px solid rgba(200,250,75,.30);
  color:var(--brand);font-size:13px;font-weight:600;
}
.hero-eyebrow i{width:6px;height:6px;border-radius:999px;background:var(--brand);display:block;}
.hero h1{
  font-size:clamp(28px,4vw,44px);
  margin-top:20px;color:#fff;
}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{
  margin-top:16px;font-size:clamp(16px,1.6vw,18px);color:rgba(247,246,242,.80);max-width:560px;
}
.hero-cta{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;}
.hero-tags{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 13px;border-radius:999px;
  background:rgba(247,246,242,.07);border:1px solid rgba(227,230,223,.18);
  font-size:12.8px;color:rgba(247,246,242,.82);
}
.chip b{color:var(--brand);font-weight:700;}
.chip.accent b{color:var(--accent);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-card);
  border:1px solid rgba(227,230,223,.18);
  box-shadow:0 24px 60px rgba(0,0,0,.42);
}
.hero-float{
  position:absolute;left:-8px;bottom:-16px;
  background:rgba(11,21,18,.92);border:1px solid rgba(200,250,75,.35);
  border-radius:var(--radius-card);padding:12px 16px;backdrop-filter:none;
  box-shadow:var(--shadow-2);
}
.hero-float span{display:block;font-size:12.5px;color:rgba(247,246,242,.68);}
.hero-float b{display:block;font-size:20px;color:var(--brand);font-weight:800;}
@media (min-width:1024px){
  .hero-inner{grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;}
  .hero-shell{padding-top:calc(var(--head-h) + 70px);padding-bottom:96px;}
}

/* ============ sections ============ */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:80px 0;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:var(--muted);
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand-deep);}
.sec-title{margin-top:12px;font-size:clamp(24px,3vw,32px);}
.sec-desc{margin-top:12px;color:var(--muted);max-width:660px;font-size:16px;}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;}

/* 痛点 */
.pain-grid{margin-top:36px;display:grid;grid-template-columns:1fr;gap:20px;}
.pain-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.pain-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(200,250,75,.45);}
.pain-icon{
  width:40px;height:40px;border-radius:12px;background:var(--ink-900);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:800;
}
.pain-item h3{margin-top:14px;font-size:18px;}
.pain-item p{margin-top:8px;font-size:14.5px;color:var(--muted);}
.pain-lead{
  background:var(--ink-900);color:#F7F6F2;border:0;
  display:flex;flex-direction:column;justify-content:space-between;
}
.pain-lead h3{color:#fff;font-size:22px;margin-top:0;}
.pain-lead p{color:rgba(247,246,242,.72);}
.pain-lead .pain-tag{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;
  font-size:12.5px;color:var(--brand);font-weight:700;
}
@media (min-width:768px){
  .pain-grid{grid-template-columns:repeat(2,1fr);}
}
@media (min-width:1024px){
  .pain-grid{grid-template-columns:1.15fr .85fr;grid-auto-rows:minmax(0,auto);}
  .pain-grid .pain-lead{grid-row:span 2;}
}

/* 方案交错 */
.solve-block{
  display:grid;grid-template-columns:1fr;gap:28px;align-items:center;
  padding:26px 0;
}
.solve-block + .solve-block{border-top:1px solid var(--line);}
.solve-num{
  font-size:56px;line-height:1;font-weight:800;color:rgba(11,21,18,.10);
  letter-spacing:-.04em;
}
.solve-block h3{font-size:clamp(20px,2.4vw,26px);margin-top:6px;}
.solve-block p{margin-top:12px;color:var(--muted);}
.solve-list{margin-top:18px;display:grid;gap:10px;}
.solve-list li{
  display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-800);
  padding-left:2px;
}
.solve-list li::before{
  content:"";width:16px;height:16px;flex:0 0 16px;margin-top:6px;border-radius:5px;
  background:var(--brand);box-shadow:inset 0 0 0 4px var(--paper);
  border:1px solid var(--brand-deep);
}
.solve-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-card);border:1px solid var(--line);box-shadow:var(--shadow-1);}
@media (min-width:1024px){
  .solve-block{grid-template-columns:1fr 1fr;gap:52px;}
  .solve-block.reverse .solve-media{order:-1;}
}

/* 数据带 */
.stats{
  background:var(--ink-800);color:#F7F6F2;border-radius:18px;padding:38px 24px;
  position:relative;overflow:hidden;
}
.stats::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(200,250,75,.07) 0 2px,transparent 2px 18px);
  pointer-events:none;
}
.stats-grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(2,1fr);gap:26px;}
.stat b{display:block;font-size:clamp(26px,3.4vw,38px);color:var(--brand);font-weight:800;letter-spacing:-.03em;}
.stat span{display:block;margin-top:6px;font-size:13px;color:rgba(247,246,242,.72);}
.stat small{display:block;margin-top:2px;font-size:12.5px;color:rgba(247,246,242,.48);}
@media (min-width:1024px){.stats-grid{grid-template-columns:repeat(4,1fr);}}

/* 证言 */
.voice-wrap{margin-top:36px;display:grid;grid-template-columns:1fr;gap:22px;}
.voice{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.voice:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(200,250,75,.45);}
.voice::before{
  content:"“";position:absolute;top:6px;right:20px;
  font-size:64px;line-height:1;color:rgba(200,250,75,.55);font-family:Georgia,serif;
}
.voice p{font-size:15.5px;color:var(--ink-800);}
.voice-user{margin-top:18px;display:flex;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:16px;}
.voice-user img{width:44px;height:44px;border-radius:999px;object-fit:cover;}
.voice-user strong{display:block;font-size:14.5px;}
.voice-user span{display:block;font-size:12.8px;color:var(--muted);}
@media (min-width:768px){
  .voice-wrap{grid-template-columns:repeat(2,1fr);}
  .voice-wrap .voice:nth-child(2){transform:translateY(26px);}
  .voice-wrap .voice:nth-child(2):hover{transform:translateY(22px);}
}

/* CMS 列表 */
.news-grid{margin-top:34px;display:grid;grid-template-columns:1fr;gap:22px;}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-left:3px solid transparent;
  border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-left-color:var(--brand);border-color:rgba(200,250,75,.4);}
.news-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 11px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(11,21,18,.06);color:var(--ink-800);
}
.badge.solid{background:var(--brand);color:var(--ink-900);}
.news-meta time{font-size:12.8px;color:var(--muted);}
.news-card h3{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card p{font-size:14.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-more{margin-top:auto;font-size:14px;font-weight:700;color:var(--ink-900);display:inline-flex;align-items:center;gap:6px;}
.news-more:hover{color:var(--brand-deep);}
.news-card.feature{grid-column:1/-1;}
@media (min-width:768px){
  .news-grid{grid-template-columns:repeat(2,1fr);}
}
@media (min-width:1024px){
  .news-grid{grid-template-columns:repeat(3,1fr);}
  .news-card.feature{display:grid;grid-template-columns:1.15fr 1fr;border-left-width:3px;}
  .news-card.feature img{height:100%;aspect-ratio:auto;min-height:240px;}
  .news-card.feature .news-body{padding:30px;}
  .news-card.feature h3{font-size:24px;-webkit-line-clamp:2;}
}
.empty-state{
  margin-top:30px;padding:44px 24px;text-align:center;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-card);
}
.empty-state p{color:var(--muted);}

/* FAQ */
.faq-layout{margin-top:34px;display:grid;grid-template-columns:1fr;gap:24px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:12px 2px;text-align:left;font-size:16px;font-weight:700;
  color:var(--ink-900);transition:color .18s ease;
}
.faq-q:hover{color:var(--brand-deep);}
.faq-q i{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;
  background:var(--ink-900);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-style:normal;font-size:16px;font-weight:700;line-height:1;
}
.faq-a{
  display:none;background:rgba(200,250,75,.07);
  border-radius:10px;padding:14px 16px;margin-bottom:14px;
  font-size:14.8px;color:var(--ink-800);
}
.faq-item.open .faq-a{display:block;}
@media (min-width:1024px){.faq-layout{grid-template-columns:.7fr 1.3fr;gap:48px;align-items:start;}}

/* CTA band */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-900);color:#F7F6F2;
  border-radius:20px;padding:38px 26px;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(200,250,75,.08) 0 2px,transparent 2px 18px);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;}
.cta-inner h2{font-size:clamp(22px,2.8vw,30px);color:#fff;}
.cta-inner p{margin-top:8px;color:rgba(247,246,242,.74);font-size:15px;}

/* footer */
.site-footer{background:var(--ink-900);color:rgba(247,246,242,.72);margin-top:60px;padding:52px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px;}
.footer-brand .brand-text{font-size:18px;}
.footer-brand p{margin-top:14px;font-size:14px;color:rgba(247,246,242,.62);max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px;letter-spacing:0;}
.footer-col li + li{margin-top:9px;}
.footer-col a{font-size:14px;color:rgba(247,246,242,.68);transition:color .18s ease;}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(227,230,223,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(247,246,242,.52);
}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;}}

/* roulang page: article */
:root{
  --ink-900:#0B1512;
  --ink-800:#12241F;
  --brand:#C8FA4B;
  --brand-deep:#A8DC22;
  --accent:#FF6B2C;
  --paper:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E3E6DF;
  --muted:#6B7472;
  --r-card:14px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(11,21,18,.06);
  --sh-2:0 10px 28px rgba(11,21,18,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:#1C2824;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;font-weight:700;line-height:1.35;color:var(--ink-900)}
p{margin:0}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
:focus-visible{outline:3px solid rgba(200,250,75,.85);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}

/* ---------- Topbar ---------- */
.topbar{background:var(--ink-800);color:#C9D4CD;font-size:13px}
.topbar-inner{display:flex;align-items:center;gap:16px;min-height:40px;flex-wrap:wrap;padding-top:6px;padding-bottom:6px}
.topbar-note{flex:1 1 260px;color:#9DAAA3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.status-chip{display:inline-flex;align-items:center;gap:7px;padding:3px 11px;border-radius:999px;background:rgba(200,250,75,.14);color:var(--brand);font-size:12.5px;white-space:nowrap}
.status-chip .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block;box-shadow:0 0 0 3px rgba(200,250,75,.18)}
.countdown{display:inline-flex;align-items:center;gap:7px;color:#E6EFE7;font-size:12.5px;white-space:nowrap}
.countdown b{color:var(--accent);font-weight:700;letter-spacing:.02em}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(11,21,18,.94);backdrop-filter:blur(8px);border-bottom:1px solid rgba(255,255,255,.06);transition:background .25s ease,box-shadow .25s ease}
.site-header.is-scrolled{background:var(--ink-900);box-shadow:0 6px 24px rgba(11,21,18,.28)}
.nav-inner{display:flex;align-items:center;gap:24px;min-height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand);color:var(--ink-900);display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:17px;letter-spacing:0}
.brand-text{color:#fff;font-weight:800;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:none;align-items:center;gap:4px;margin-left:8px}
.main-nav a{padding:8px 14px;border-radius:999px;font-size:14.5px;color:#C6D2CB;transition:color .2s ease,background .2s ease}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.07)}
.main-nav a.active{color:var(--ink-900);background:var(--brand);font-weight:600}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-actions .status-chip{display:none}
.nav-toggle{width:44px;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.16);background:transparent;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;background:#E8EFE9;border-radius:2px}
@media(min-width:1024px){
  .main-nav{display:flex}
  .nav-actions .status-chip{display:inline-flex}
  .nav-toggle{display:none}
}
.mobile-drawer{display:none;border-top:1px solid rgba(255,255,255,.08);background:var(--ink-900);padding:16px 0 24px}
.mobile-drawer.open{display:block}
.mobile-drawer .container{display:flex;flex-direction:column;gap:8px}
.mobile-drawer a.drawer-link{padding:12px 14px;border-radius:10px;background:rgba(255,255,255,.04);color:#DCE5DE;font-size:15px}
.mobile-drawer a.drawer-link.active{background:var(--brand);color:var(--ink-900);font-weight:600}
.drawer-foot{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:10px;padding-top:14px;border-top:1px solid rgba(255,255,255,.08)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:var(--r-btn);padding:12px 22px;font-size:15px;font-weight:600;line-height:1;transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease;white-space:nowrap}
.btn-primary{background:var(--brand);color:var(--ink-900);box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 8px 20px rgba(168,220,34,.28)}
.btn-ghost{background:transparent;color:#EDF3EE;border:1px solid rgba(255,255,255,.22)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-outline{background:var(--surface);color:var(--ink-900);border:1px solid var(--line);box-shadow:var(--sh-1)}
.btn-outline:hover{border-color:var(--brand);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn:active{transform:translateY(0)}

/* ---------- Article head ---------- */
.article-head{background:var(--surface);border-bottom:1px solid var(--line)}
.crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13.5px;color:var(--muted);padding:22px 0 0}
.crumbs a{border-bottom:1px solid transparent}
.crumbs a:hover{color:var(--ink-900);border-bottom-color:var(--brand)}
.crumbs .sep{color:#BFC7C0}
.crumbs .now{color:#3B4844;max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head .inner{max-width:860px;padding:18px 0 34px}
.article-title{font-size:clamp(26px,4vw,40px);font-weight:800;line-height:1.28}
.article-meta{display:flex;align-items:center;gap:10px 18px;flex-wrap:wrap;margin-top:18px;font-size:13.5px;color:var(--muted)}
.article-meta .m{display:inline-flex;align-items:center;gap:7px}
.article-meta .m .k{color:#9AA49E}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:600;background:rgba(200,250,75,.35);color:#2C3B14;border:1px solid rgba(168,220,34,.6)}
.badge-dark{background:var(--ink-900);color:var(--brand);border-color:transparent}

/* ---------- Article body ---------- */
.article-wrap{padding:48px 0 64px}
.article-body{max-width:760px;margin:0 auto}
.article-body .lead{font-size:17.5px;color:#33403B}
.prose-custom{font-size:16.5px;line-height:1.85;color:#23302B}
.prose-custom p{margin:0 0 1.2em}
.prose-custom h2{font-size:clamp(22px,2.6vw,27px);margin:40px 0 16px;padding-left:16px;position:relative}
.prose-custom h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:3px;background:var(--brand)}
.prose-custom h3{font-size:19px;margin:30px 0 12px}
.prose-custom ul,.prose-custom ol{margin:0 0 1.2em;padding-left:1.35em}
.prose-custom ul li{list-style:disc;margin:.45em 0}
.prose-custom ol li{list-style:decimal;margin:.45em 0}
.prose-custom blockquote{margin:26px 0;padding:18px 22px;border-left:3px solid var(--brand);background:#F1F5EA;border-radius:0 12px 12px 0;color:#3A4742}
.prose-custom blockquote p:last-child{margin:0}
.prose-custom img{border-radius:var(--r-card);margin:22px 0;object-fit:cover;width:100%}
.prose-custom figure{margin:22px 0}
.prose-custom figcaption{font-size:13.5px;color:var(--muted);margin-top:8px;text-align:center}
.prose-custom table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;background:var(--surface);border-radius:10px;overflow:hidden}
.prose-custom th{background:#F1F5EA;text-align:left;font-weight:600;color:var(--ink-900)}
.prose-custom th,.prose-custom td{border:1px solid var(--line);padding:10px 13px}
.prose-custom code{background:#EFF3E8;padding:2px 6px;border-radius:6px;font-size:.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.prose-custom pre{background:var(--ink-900);color:#DCE7DE;padding:18px;border-radius:12px;overflow-x:auto;font-size:14px;line-height:1.7}
.prose-custom pre code{background:none;padding:0;color:inherit}
.prose-custom a{color:#22684A;border-bottom:1px solid rgba(34,104,74,.35)}
.prose-custom a:hover{color:var(--ink-900);border-bottom-color:var(--brand)}
.prose-custom hr{border:none;border-top:1px solid var(--line);margin:32px 0}

/* ---------- Empty state ---------- */
.empty-state{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:40px 28px;text-align:center;box-shadow:var(--sh-1)}
.empty-state h2{font-size:24px;margin-bottom:12px}
.empty-state p{color:var(--muted);max-width:44ch;margin:0 auto 22px}

/* ---------- Related ---------- */
.related{padding:8px 0 72px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px}
.sec-head h2{font-size:clamp(22px,2.8vw,30px)}
.sec-head .more{font-size:14px;color:#2C6B4E;border-bottom:1px solid transparent}
.sec-head .more:hover{border-bottom-color:var(--brand)}
.card-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media(min-width:700px){.card-grid{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;position:relative}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(200,250,75,.55)}
.card-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:#E9EDE4}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-cover img{transform:scale(1.04)}
.card-cover .tag{position:absolute;left:12px;top:12px;padding:4px 11px;border-radius:999px;background:rgba(11,21,18,.82);color:var(--brand);font-size:12px;font-weight:600}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{color:var(--muted);font-size:14.5px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted)}
.card-foot .go{color:#22684A;font-weight:600}
.card-foot .go:hover{color:var(--ink-900)}

/* ---------- Back link ---------- */
.back-row{display:flex;justify-content:center;padding:0 0 56px}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink-900);position:relative;overflow:hidden;border-radius:var(--r-card)}
.cta-band::after{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(135deg,rgba(200,250,75,.16) 0 1px,transparent 1px 13px);pointer-events:none}
.cta-inner{position:relative;z-index:1;display:flex;flex-direction:column;gap:20px;padding:38px 28px}
.cta-inner h2{color:#fff;font-size:clamp(22px,3vw,30px)}
.cta-inner p{color:#B9C6BE;font-size:15px;margin-top:10px;max-width:52ch}
.cta-btns{display:flex;gap:12px;flex-wrap:wrap}
@media(min-width:900px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between;padding:46px 44px}.cta-btns{flex:0 0 auto}}

/* ---------- FAQ ---------- */
.faq{padding:0 0 72px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;background:transparent;border:none;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 4px;min-height:56px;font-size:16px;font-weight:600;color:var(--ink-900);text-align:left}
.faq-q .ico{flex:0 0 auto;width:24px;height:24px;border-radius:50%;background:rgba(200,250,75,.4);color:#2C3B14;display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:700}
.faq-a{display:none;padding:0 4px 20px;color:#41504A;font-size:15px;background:transparent}
.faq-item.open .faq-a{display:block}
.faq-item.open .faq-q .ico{background:var(--ink-900);color:var(--brand)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-900);color:#B7C3BC;padding:56px 0 26px;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.footer-brand .brand-text{font-size:17px}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:#93A29A;max-width:34ch}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:#B7C3BC;border-bottom:1px solid transparent}
.footer-col a:hover{color:var(--brand);border-bottom-color:var(--brand)}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.09);display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;font-size:13px;color:#8A968F}

/* ---------- Section rhythm ---------- */
.section{padding:72px 0}
@media(max-width:767px){.section{padding:48px 0}.article-wrap{padding:32px 0 48px}}

/* roulang page: category1 */
:root{
  --ink-900:#0B1512;
  --ink-800:#12241F;
  --brand:#C8FA4B;
  --brand-deep:#A8DC22;
  --accent:#FF6B2C;
  --paper:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E3E6DF;
  --muted:#6B7472;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(11,21,18,.06);
  --shadow-2:0 10px 28px rgba(11,21,18,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-900);
  background:var(--paper);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{text-decoration:underline;text-underline-offset:3px}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.28}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--ink-900);border-bottom:1px solid rgba(255,255,255,.08);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:0 10px 28px rgba(11,21,18,.35)}
.topbar{background:rgba(255,255,255,.04);border-bottom:1px solid rgba(255,255,255,.07)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;padding-top:6px;padding-bottom:6px}
.topbar-note{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.pulse{width:6px;height:6px;border-radius:50%;background:var(--brand);flex:none;box-shadow:0 0 0 0 rgba(200,250,75,.6);animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(200,250,75,.55)}70%{box-shadow:0 0 0 8px rgba(200,250,75,0)}100%{box-shadow:0 0 0 0 rgba(200,250,75,0)}}
.topbar-meta{display:flex;align-items:center;gap:12px;flex:none}
.topbar-time{font-size:13px;color:var(--brand);font-weight:700}
.badge{display:inline-flex;align-items:center;gap:8px;padding:4px 12px;border-radius:var(--radius-pill);font-size:13px;line-height:1.6;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.14);color:#fff;white-space:nowrap}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);flex:none}
.badge-accent .dot{background:var(--accent)}
.badge-sm{padding:3px 10px;font-size:12px}

.nav-inner{display:flex;align-items:center;gap:20px;min-height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;flex:none}
.brand:hover{text-decoration:none}
.brand-mark{width:34px;height:34px;border-radius:9px;background:var(--brand);color:var(--ink-900);display:grid;place-items:center;font-size:16px;font-weight:800;letter-spacing:0;flex:none}
.brand-text{font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:none}
@media(min-width:1024px){
  .main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
}
.main-nav a{padding:9px 14px;border-radius:var(--radius-pill);font-size:15px;color:rgba(255,255,255,.76);transition:background .2s ease,color .2s ease}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.09);text-decoration:none}
.main-nav a.active{color:var(--ink-900);background:var(--brand);font-weight:700}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;flex:none}
.nav-status{display:none;align-items:center;gap:7px;font-size:13px;color:rgba(255,255,255,.7)}
.nav-status .dot{width:6px;height:6px;border-radius:50%;background:var(--brand)}
@media(min-width:768px){.nav-status{display:inline-flex}}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 20px;border-radius:var(--radius-btn);font-size:15px;font-weight:700;text-align:center;transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease;border:1px solid transparent}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--brand);color:var(--ink-900)}
.btn-primary:hover{background:var(--brand-deep)}
.btn-ghost{border-color:rgba(255,255,255,.28);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.10);border-color:rgba(200,250,75,.6)}
.btn-dark{background:var(--ink-900);color:#fff}
.btn-dark:hover{background:var(--ink-800)}
.btn-outline{border-color:var(--line);background:var(--surface);color:var(--ink-900)}
.btn-outline:hover{border-color:rgba(200,250,75,.8);box-shadow:var(--shadow-1)}

.nav-toggle{width:44px;height:44px;display:inline-flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;border-radius:var(--radius-btn);border:1px solid rgba(255,255,255,.18)}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px}
@media(min-width:1024px){.nav-toggle{display:none}}

.drawer{display:none;background:var(--ink-900);border-top:1px solid rgba(255,255,255,.08);padding:12px 0 22px}
.drawer.open{display:block}
@media(min-width:1024px){.drawer{display:none !important}}
.drawer nav{display:flex;flex-direction:column}
.drawer nav a{display:flex;align-items:center;min-height:48px;font-size:16px;color:rgba(255,255,255,.82);padding:0 20px}
@media(min-width:768px){.drawer nav a{padding:0 32px}}
.drawer nav a.active{color:var(--brand);font-weight:700;background:rgba(200,250,75,.08)}
.drawer-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:16px;padding:0 20px}
@media(min-width:768px){.drawer-actions{padding:0 32px}}

/* ---------- page head ---------- */
.page-head{position:relative;background:var(--ink-900);color:#fff;overflow:hidden;padding:60px 0 52px}
.page-head-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.26}
.page-head::after{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(115deg,rgba(200,250,75,.10) 0 2px,transparent 2px 13px);pointer-events:none}
.page-head-inner{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:18px}
.crumb a{color:rgba(255,255,255,.75)}
.crumb a:hover{color:var(--brand)}
.page-head h1{font-size:clamp(28px,4vw,44px);max-width:900px}
.page-head .lede{margin-top:16px;font-size:17px;color:rgba(255,255,255,.78);max-width:640px}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}

/* ---------- sections ---------- */
.section{padding:80px 0}
@media(max-width:767px){.section{padding:48px 0}}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;flex-direction:column;gap:12px;margin-bottom:44px}
@media(min-width:1024px){
  .section-head{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:40px}
}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.18em;color:var(--muted)}
.section-head h2{font-size:clamp(24px,3vw,32px);max-width:640px}
.section-head p{color:var(--muted);max-width:460px;font-size:16px}

/* ---------- feature rows ---------- */
.feature{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media(min-width:900px){
  .feature{grid-template-columns:1.05fr .95fr;gap:56px}
  .feature.reverse .feature-media{order:-1}
}
.feature + .feature{margin-top:72px}
@media(max-width:899px){.feature + .feature{margin-top:48px}}
.feature-media{position:relative}
.feature-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-card);border:1px solid var(--line);box-shadow:var(--shadow-1)}
.feature-num{font-size:56px;font-weight:800;line-height:1;color:transparent;-webkit-text-stroke:1.4px rgba(11,21,18,.22);letter-spacing:-.04em;margin-bottom:10px}
.feature h3{font-size:20px;margin-bottom:14px}
.feature p{color:var(--muted);margin-bottom:14px}
.feature-list li{position:relative;padding-left:22px;margin-bottom:10px;color:var(--ink-900);font-size:16px}
.feature-list li::before{content:"";position:absolute;left:0;top:12px;width:10px;height:2px;background:var(--brand-deep)}
.feature-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;border-bottom:2px solid var(--brand);padding-bottom:2px}
.feature-link:hover{text-decoration:none;border-color:var(--brand-deep)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 22px;box-shadow:var(--shadow-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(200,250,75,.65)}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius-btn);background:var(--ink-900);color:var(--brand);font-weight:800;font-size:15px;margin-bottom:18px}
.step h3{font-size:18px;margin-bottom:10px}
.step p{font-size:15px;color:var(--muted)}

/* ---------- tip bar ---------- */
.tipbar{display:flex;gap:16px;align-items:flex-start;background:#FFF5EF;border:1px solid rgba(255,107,44,.28);border-left:4px solid var(--accent);border-radius:var(--radius-card);padding:20px 24px;margin-top:36px}
.tipbar .tip-mark{flex:none;width:26px;height:26px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;font-size:14px;font-weight:800;margin-top:3px}
.tipbar strong{display:block;font-size:16px;margin-bottom:4px}
.tipbar p{font-size:15px;color:#8A4A28}

/* ---------- checklist ---------- */
.checklist{border-top:1px solid var(--line)}
.check-row{display:grid;grid-template-columns:1fr;gap:8px;padding:22px 12px;border-bottom:1px solid var(--line);transition:background .2s ease}
@media(min-width:768px){
  .check-row{grid-template-columns:.9fr 1.5fr;gap:36px;align-items:start}
}
.check-row:hover{background:rgba(200,250,75,.12)}
.check-key{display:flex;align-items:flex-start;gap:10px;font-weight:700;font-size:16px}
.check-key .dotline{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none;margin-top:11px}
.check-val{color:var(--muted);font-size:15.5px}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:56px;padding:16px 4px;font-size:17px;font-weight:700;cursor:pointer;list-style:none;transition:color .2s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--ink-800)}
.faq-icon{position:relative;flex:none;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);background:var(--surface);transition:background .2s ease,border-color .2s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:var(--ink-900);border-radius:2px;transition:opacity .2s ease}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px}
.faq-item[open] .faq-icon{background:var(--brand);border-color:var(--brand)}
.faq-item[open] .faq-icon::after{opacity:0}
.faq-body{background:#FBFBF7;border-radius:var(--radius-btn);padding:16px 20px;margin:0 4px 20px;color:var(--muted);font-size:15.5px}

/* ---------- cta band ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--ink-900);color:#fff;border-radius:var(--radius-card);padding:44px 40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px}
.cta-band::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(115deg,rgba(200,250,75,.12) 0 2px,transparent 2px 14px);pointer-events:none}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);max-width:520px}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.72);max-width:520px;font-size:15.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media(max-width:767px){.cta-band{padding:32px 22px}}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:80px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14.5px;max-width:320px;color:rgba(255,255,255,.66)}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700}
.footer-col li{margin-bottom:10px;font-size:14.5px}
.footer-col a{color:rgba(255,255,255,.7)}
.footer-col a:hover{color:var(--brand);text-decoration:underline}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid rgba(255,255,255,.10);margin-top:44px;padding-top:22px;font-size:13px;color:rgba(255,255,255,.5)}
.footer-bottom .num{color:rgba(255,255,255,.62)}

@media(max-width:520px){
  .brand-text{font-size:15px}
  .nav-inner{gap:12px;min-height:62px}
  .topbar-note{font-size:12px}
}

/* roulang page: category2 */
:root{
    --ink-900:#0B1512;
    --ink-800:#12241F;
    --brand:#C8FA4B;
    --brand-deep:#A8DC22;
    --accent:#FF6B2C;
    --paper:#F7F6F2;
    --surface:#FFFFFF;
    --line:#E3E6DF;
    --muted:#6B7472;
    --r-card:14px;
    --r-btn:10px;
    --r-pill:999px;
    --sh-1:0 1px 2px rgba(11,21,18,.06);
    --sh-2:0 10px 28px rgba(11,21,18,.10);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink-900);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  img{display:block;max-width:100%;height:auto}
  a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
  a:hover{text-decoration:underline;text-underline-offset:3px}
  button{font:inherit;cursor:pointer;border:0;background:none}
  :focus-visible{outline:3px solid rgba(200,250,75,.9);outline-offset:2px;border-radius:6px}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){.container{padding:0 32px}}

  .section{padding:52px 0}
  @media (min-width:768px){.section{padding:80px 0}}
  .section-head{max-width:640px}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
    color:#4B6B1E;background:rgba(200,250,75,.28);
    border-radius:var(--r-pill);padding:4px 12px;margin-bottom:14px;
  }
  .section-title{font-size:clamp(22px,3vw,32px);font-weight:800;letter-spacing:-.02em;line-height:1.3}
  .section-sub{margin-top:12px;color:var(--muted);font-size:16px;max-width:620px}
  .divider{height:1px;background:var(--line);border:0}

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 20px;border-radius:var(--r-btn);
    font-size:15px;font-weight:700;border:1px solid transparent;
    transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
    text-decoration:none !important;white-space:nowrap;
  }
  .btn-primary{background:var(--brand);color:var(--ink-900)}
  .btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh-2)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{background:rgba(255,255,255,.04);color:#fff;border-color:rgba(255,255,255,.26)}
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
  .btn-outline{background:var(--surface);color:var(--ink-900);border-color:var(--line)}
  .btn-outline:hover{border-color:rgba(200,250,75,.75);transform:translateY(-1px);box-shadow:var(--sh-2)}
  .btn-sm{min-height:38px;padding:0 16px;font-size:14px}

  /* 徽章 */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    height:28px;padding:0 12px;border-radius:var(--r-pill);
    background:rgba(11,21,18,.06);color:var(--ink-900);
    font-size:13px;font-weight:600;line-height:1;
  }
  .badge .dot{width:6px;height:6px;border-radius:50%;background:var(--brand-deep);box-shadow:0 0 0 3px rgba(200,250,75,.25)}
  .badge-dark{background:rgba(255,255,255,.09);color:#fff}
  .badge-dark .dot{background:var(--brand)}
  .badge-accent{background:rgba(255,107,44,.14);color:#B8450F}
  .badge-line{background:transparent;border:1px solid var(--line);color:var(--muted)}

  /* 顶栏与导航 */
  .site-header{position:sticky;top:0;z-index:80;background:var(--ink-900);border-bottom:1px solid rgba(255,255,255,.09)}
  .site-header.scrolled{box-shadow:0 8px 26px rgba(11,21,18,.35)}
  .topbar{background:var(--ink-800);border-bottom:1px solid rgba(255,255,255,.06);color:rgba(255,255,255,.72);font-size:13px}
  .topbar-inner{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:space-between;min-height:40px}
  .topbar-note{display:none}
  @media (min-width:900px){.topbar-note{display:inline}}
  .topbar-right{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
  .header-inner{display:flex;align-items:center;gap:20px;min-height:66px;position:relative}

  .brand{display:inline-flex;align-items:center;gap:10px}
  .brand:hover{text-decoration:none}
  .brand-mark{
    width:36px;height:36px;border-radius:11px;background:var(--brand);color:var(--ink-900);
    display:grid;place-items:center;font-weight:800;font-size:17px;letter-spacing:-.02em;
  }
  .brand-text{font-weight:800;font-size:17px;letter-spacing:-.02em;color:#fff}

  .main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
  .main-nav a{
    position:relative;padding:9px 14px;border-radius:8px;
    color:rgba(255,255,255,.78);font-size:15px;font-weight:600;
  }
  .main-nav a:hover{color:#fff;background:rgba(255,255,255,.07);text-decoration:none}
  .main-nav a.active{color:var(--brand)}
  .main-nav a.active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
    background:var(--brand);border-radius:2px;
  }
  .header-actions{display:flex;align-items:center;gap:12px;margin-left:12px}
  .nav-toggle{
    display:none;width:44px;height:44px;border-radius:10px;
    border:1px solid rgba(255,255,255,.24);align-items:center;justify-content:center;
    color:#fff;flex-direction:column;gap:5px;
  }
  .nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .2s ease,opacity .2s ease}
  .site-header.open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .site-header.open .nav-toggle span:nth-child(2){opacity:0}
  .site-header.open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .nav-extra{display:none}

  @media (max-width:900px){
    .nav-toggle{display:inline-flex}
    .header-actions .hide-mobile{display:none}
    .main-nav{
      position:absolute;top:100%;left:0;right:0;
      display:none;flex-direction:column;align-items:stretch;gap:2px;
      margin:0;padding:12px 20px 20px;
      background:var(--ink-900);border-bottom:1px solid rgba(200,250,75,.2);
      box-shadow:0 18px 30px rgba(11,21,18,.4);
    }
    .site-header.open .main-nav{display:flex}
    .main-nav a{padding:13px 8px;font-size:16px}
    .main-nav a.active::after{display:none}
    .nav-extra{
      display:flex;flex-direction:column;gap:12px;
      margin-top:12px;padding-top:16px;border-top:1px solid rgba(255,255,255,.12);
      color:rgba(255,255,255,.72);font-size:13px;
    }
  }

  /* 页头 */
  .page-hero{position:relative;background:var(--ink-900);color:#fff;overflow:hidden;padding:56px 0 52px}
  @media (min-width:768px){.page-hero{padding:76px 0 68px}}
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background-image:url("/assets/images/backpic/back-1.webp");
    background-size:cover;background-position:center;opacity:.22;
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:repeating-linear-gradient(135deg,rgba(200,250,75,.11) 0 2px,transparent 2px 15px);
  }
  .page-hero .container{position:relative;z-index:2}
  .crumb{font-size:13px;color:rgba(255,255,255,.62);margin-bottom:16px}
  .crumb a{color:rgba(255,255,255,.72)}
  .crumb a:hover{color:var(--brand)}
  .page-hero h1{
    font-size:clamp(28px,4vw,44px);font-weight:800;letter-spacing:-.02em;line-height:1.22;
    max-width:820px;
  }
  .page-hero .lede{margin-top:16px;font-size:17px;color:rgba(255,255,255,.82);max-width:660px}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
  .hero-tags .badge{background:rgba(255,255,255,.1);color:#fff}
  .hero-tags .badge .dot{background:var(--brand)}

  /* 通用卡片 */
  .card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--sh-1);padding:24px;
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(200,250,75,.55)}
  .card h3{font-size:19px;font-weight:800;letter-spacing:-.01em}
  .card p{margin-top:10px;color:var(--muted);font-size:15px}
  .card-accent{border-left:3px solid var(--brand)}

  /* 数据小条 */
  .stat-grid{display:grid;gap:16px;grid-template-columns:1fr}
  @media (min-width:640px){.stat-grid{grid-template-columns:repeat(3,1fr)}}
  .stat{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    padding:20px 22px;box-shadow:var(--sh-1);
  }
  .stat .value{font-size:30px;font-weight:800;letter-spacing:-.02em;line-height:1.2}
  .stat .label{margin-top:6px;font-size:14px;color:var(--muted)}

  /* 图文交替 */
  .split{display:grid;gap:32px}
  @media (min-width:1024px){
    .split{grid-template-columns:1fr 1fr;gap:56px;align-items:center}
    .split.reverse .split-media{order:2}
  }
  .media-frame{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1)}
  .media-frame img{width:100%;aspect-ratio:16 / 9;object-fit:cover;border-radius:var(--r-card)}
  .media-frame::after{
    content:"";position:absolute;inset:0;border:1px solid rgba(11,21,18,.08);border-radius:var(--r-card);pointer-events:none;
  }
  .big-index{
    font-size:64px;font-weight:800;line-height:1;letter-spacing:-.04em;
    color:rgba(11,21,18,.1);
  }
  .check-list{margin-top:20px;display:grid;gap:12px}
  .check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:#38423F}
  .check-list .tick{
    flex:0 0 22px;width:22px;height:22px;border-radius:7px;background:rgba(200,250,75,.4);
    display:grid;place-items:center;font-size:13px;font-weight:800;color:#3F5A10;margin-top:3px;
  }
  .check-list strong{font-weight:700;color:var(--ink-900)}

  /* 步骤块 */
  .steps{display:grid;gap:20px;grid-template-columns:1fr;margin-top:40px}
  @media (min-width:640px){.steps{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
  .step{
    position:relative;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--r-card);padding:26px 22px 24px;box-shadow:var(--sh-1);
    transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(200,250,75,.55)}
  .step .no{
    display:inline-grid;place-items:center;width:42px;height:42px;border-radius:12px;
    background:var(--ink-900);color:var(--brand);font-weight:800;font-size:15px;
  }
  .step h3{margin-top:16px;font-size:18px;font-weight:800}
  .step p{margin-top:8px;font-size:14.5px;color:var(--muted)}
  .step::before{
    content:"";position:absolute;left:22px;right:22px;top:0;height:1px;background:transparent;
  }

  /* 提示条 */
  .notice{
    display:flex;gap:16px;align-items:flex-start;
    background:rgba(255,107,44,.08);border:1px solid rgba(255,107,44,.28);
    border-left:4px solid var(--accent);border-radius:var(--r-card);
    padding:20px 22px;margin-top:8px;
  }
  .notice .mark{
    flex:0 0 34px;width:34px;height:34px;border-radius:10px;background:var(--accent);
    color:#fff;display:grid;place-items:center;font-weight:800;font-size:17px;
  }
  .notice h3{font-size:17px;font-weight:800;color:#9A3A0B}
  .notice p{margin-top:6px;font-size:15px;color:#7A4526}

  /* FAQ */
  .faq-layout{display:grid;gap:28px;margin-top:36px}
  @media (min-width:1024px){.faq-layout{grid-template-columns:300px 1fr;gap:56px;align-items:start}}
  .faq-side p{color:var(--muted);font-size:15px;margin-top:12px}
  .faq-item{
    border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);
    margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .faq-item:hover{border-color:rgba(200,250,75,.6)}
  .faq-item[open]{box-shadow:var(--sh-2)}
  .faq-item summary{
    min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:12px 20px;font-size:16px;font-weight:700;cursor:pointer;list-style:none;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:"+";flex:0 0 auto;font-size:20px;font-weight:700;color:var(--brand-deep);line-height:1;
  }
  .faq-item[open] summary::after{content:"−"}
  .faq-body{
    padding:14px 20px 20px;border-top:1px solid var(--line);
    background:rgba(247,246,242,.75);color:var(--muted);font-size:15px;
  }

  /* CTA */
  .cta-band{
    position:relative;overflow:hidden;background:var(--ink-900);color:#fff;
    border-radius:18px;padding:36px 28px;
    display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
  }
  @media (min-width:768px){.cta-band{padding:44px 40px}}
  .cta-band::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:repeating-linear-gradient(135deg,rgba(200,250,75,.12) 0 2px,transparent 2px 16px);
  }
  .cta-band > *{position:relative;z-index:2}
  .cta-band h2{font-size:clamp(20px,2.6vw,28px);font-weight:800;letter-spacing:-.02em}
  .cta-band p{margin-top:8px;color:rgba(255,255,255,.72);font-size:15px;max-width:520px}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap}

  /* 页脚 */
  .site-footer{margin-top:72px;background:var(--ink-900);color:rgba(255,255,255,.72);padding:56px 0 0}
  .footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
  @media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}}
  .footer-brand .brand{margin-bottom:14px}
  .footer-brand p{font-size:14.5px;max-width:340px;color:rgba(255,255,255,.66)}
  .footer-col h4{color:#fff;font-size:15px;font-weight:800;margin-bottom:14px}
  .footer-col li{margin-bottom:10px;font-size:14.5px}
  .footer-col a{color:rgba(255,255,255,.7)}
  .footer-col a:hover{color:var(--brand);text-decoration:none}
  .footer-bottom{
    margin-top:40px;border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    padding:20px 0;font-size:13px;color:rgba(255,255,255,.6);
  }