/* roulang page: index */
:root{
  --bg:#F7F4EE;
  --bg-soft:#EDE9E1;
  --surface:#FFFFFF;
  --text:#17191A;
  --muted:#6A6A64;
  --line:#E4DFD6;
  --line-strong:#CFC6BA;
  --dark:#121414;
  --dark-soft:#1D2020;
  --dark-text:#F7F4EE;
  --green:#CEFF4D;
  --green-hover:#E7FF8A;
  --coral:#FF6B45;
  --radius:6px;
  --radius-sm:2px;
  --shadow:0 12px 30px rgba(0,0,0,.08);
  --font-system:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-system);
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
a:hover{color:#20383A}
img{max-width:100%;height:auto}
ul,ol,li{list-style:none}
.container{max-width:1200px}
::selection{background:var(--green);color:#111}
:focus-visible{outline:3px solid #17191A;outline-offset:2px;border-radius:3px}
section{scroll-margin-top:86px}

/* header */
.site-header{
  position:sticky;
  top:0;
  z-index:2000;
  background:rgba(247,244,238,.92);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.navbar{
  min-height:80px;
  padding:0;
  background:transparent !important;
}
.navbar .container{
  min-height:80px;
  flex-wrap:nowrap;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:.65rem;
  flex-shrink:0;
}
.brand-logo{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;flex-shrink:0}
.brand-text{
  font-size:1.16rem;
  font-weight:900;
  letter-spacing:-0.01em;
  color:var(--text);
  white-space:nowrap;
}
.brand:hover{color:var(--text)}
.navbar-nav{
  gap:.2rem;
  margin-left:auto;
  margin-right:auto;
}
.nav-item{position:relative}
.nav-link{
  color:var(--text) !important;
  font-weight:600;
  font-size:15px;
  padding:.9rem .9rem !important;
  position:relative;
  line-height:1.4;
  transition:color .25s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:6px;
  width:0;
  height:2px;
  background:var(--green);
  transform:translateX(-50%);
  transition:width .28s ease;
}
.nav-link:hover::after,
.nav-link.active::after{
  width:22px;
}
.nav-link.active{color:#0A0E0B !important}
.nav-extra{margin-left:.4rem;flex-shrink:0}
.btn-entry{
  display:inline-flex;
  align-items:center;
  gap:10px;
  height:44px;
  padding:0 22px;
  background:var(--green);
  border:1px solid var(--green);
  color:#101210;
  font-weight:800;
  font-size:14px;
  line-height:1;
  border-radius:6px;
  letter-spacing:.02em;
  transition:background .25s,transform .25s,border-color .25s;
}
.btn-entry:hover{
  background:var(--green-hover);
  border-color:var(--green-hover);
  color:#101210;
  transform:translateY(-2px);
}
.btn-entry svg{transition:transform .25s}
.btn-entry:hover svg{transform:translateX(3px)}
.menu-toggle{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  border:0;
  background:none;
  color:var(--text);
  font-weight:700;
  font-size:14px;
  border:1px solid var(--line);
  border-radius:6px;
  height:42px;
  padding:0 12px;
}
.hamburger{position:relative;width:22px;height:14px;display:inline-block}
.hamburger i{
  position:absolute;
  left:0;
  width:22px;
  height:2px;
  background:currentColor;
  border-radius:1px;
}
.hamburger i:nth-child(1){top:0}
.hamburger i:nth-child(2){top:6px}
.hamburger i:nth-child(3){top:12px}
.navbar-toggler:focus{box-shadow:none}

/* common buttons */
.btn-lg-custom{
  display:inline-flex;
  align-items:center;
  gap:.7rem;
  height:52px;
  padding:0 28px;
  border-radius:6px;
  font-size:16px;
  font-weight:800;
  letter-spacing:.01em;
  transition:background .25s,color .25s,border-color .25s,transform .25s;
}
.btn-primary-custom{
  background:var(--green);
  color:#101210;
  border:1px solid var(--green);
}
.btn-primary-custom:hover{
  background:var(--green-hover);
  border-color:var(--green-hover);
  color:#101210;
  transform:translateY(-2px);
}
.btn-ghost{
  background:transparent;
  color:#111;
  border:1px solid #D0C7BB;
}
.btn-ghost:hover{
  background:#EDE9E1;
  border-color:#17191A;
  color:#17191A;
  transform:translateY(-2px);
}
.btn-light-ghost{
  background:transparent;
  color:var(--dark-text);
  border:1px solid rgba(255,255,255,.38);
}
.btn-light-ghost:hover{
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.9);
  color:var(--dark-text);
}

/* hero */
.hero{
  position:relative;
  min-height:calc(100vh - 80px);
  display:flex;
  align-items:center;
  background:var(--bg) url("/assets/images/backpic/back-1.webp") center 82% / cover no-repeat;
  overflow:hidden;
  padding:4.8rem 0 4.2rem;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(247,244,238,.91);
}
.hero::after{
  content:"";
  position:absolute;
  left:50%;
  top:-16px;
  width:min(96%,1180px);
  height:100%;
  background-image:linear-gradient(rgba(23,25,26,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(23,25,26,.035) 1px,transparent 1px);
  background-size:48px 48px;
  transform:translateX(-50%);
  pointer-events:none;
}
.hero .container{position:relative;z-index:2}
.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:.6rem;
  font-size:13px;
  font-weight:800;
  letter-spacing:.14em;
  color:#59605A;
  text-transform:uppercase;
  margin-bottom:1.1rem;
}
.hero-kicker::before{
  content:"";
  display:inline-block;
  width:34px;
  height:3px;
  background:var(--green);
  border-radius:2px;
}
.hero-title{
  max-width:720px;
  font-size:clamp(2.6rem,6vw,4.6rem);
  font-weight:900;
  line-height:1.1;
  letter-spacing:-.015em;
  margin-bottom:1.4rem;
  color:var(--text);
  animation:riseUp .6s ease .08s both;
}
.hero-lead{
  max-width:690px;
  font-size:clamp(1.02rem,1.6vw,1.2rem);
  line-height:1.95;
  color:#3E433D;
  margin-bottom:2rem;
  animation:riseUp .6s ease .18s both;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:1rem;
  margin-bottom:1.6rem;
  animation:riseUp .6s ease .28s both;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:.9rem 2rem;
  color:var(--muted);
  font-size:13px;
  font-weight:600;
  animation:riseUp .6s ease .36s both;
}
.hero-meta span{display:inline-flex;align-items:center;gap:.45rem}
.hero-meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--coral)}
.hero-media{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:6px;
  padding:10px;
  box-shadow:var(--shadow);
  animation:riseUp .7s ease .22s both;
}
.hero-media img{
  display:block;
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:4px;
  background:var(--bg-soft);
}
.hero-media-info{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:14px 8px 6px;
  font-size:13px;
  color:var(--muted);
  font-weight:600;
}
.hero-media-info .badge-green{
  background:rgba(206,255,77,.2);
  color:#17191A;
  padding:5px 12px;
  border-radius:999px;
  font-weight:800;
}
@keyframes riseUp{
  from{opacity:0;transform:translateY(18px)}
  to{opacity:1;transform:translateY(0)}
}

/* category strip */
.section-catstrip{padding-bottom:clamp(3rem,6vw,5rem)}
.cat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cat-item{
  min-height:150px;
  padding:1.8rem 1.6rem 1.6rem;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  gap:1.3rem;
  border-right:1px solid var(--line);
  transition:background .3s ease,box-shadow .3s ease;
}
.cat-item:last-child{border-right:0}
.cat-item:hover{background:var(--surface);box-shadow:var(--shadow)}
.cat-top{display:flex;align-items:center;gap:.55rem}
.cat-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:32px;
  height:32px;
  border:1px solid var(--line);
  border-radius:6px;
  color:var(--text);
  transition:background .3s,border-color .3s;
}
.cat-item:hover .cat-icon{background:var(--green);border-color:var(--green)}
.cat-tag{
  font-size:11px;
  font-weight:800;
  letter-spacing:.08em;
  color:var(--muted);
}
.cat-item strong{
  font-size:1.2rem;
  font-weight:800;
  line-height:1.4;
  display:block;
  color:var(--text);
}
.cat-item span.desc{
  display:block;
  color:var(--muted);
  font-size:13px;
  line-height:1.7;
}
.cat-go{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:13px;
  font-weight:700;
  color:#333;
  transition:color .2s;
}
.cat-go svg{transition:transform .25s}
.cat-item:hover .cat-go svg{transform:translateX(4px)}

/* section base */
.section{
  padding:clamp(4.8rem,9vw,7.5rem) 0;
}
.section.section-soft{background:var(--bg-soft)}
.section-more{padding:clamp(4rem,8vw,6.5rem) 0}
.section-head{
  margin-bottom:clamp(2.2rem,4vw,3.4rem);
  max-width:780px;
}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-title{
  font-size:clamp(1.8rem,3.2vw,2.6rem);
  font-weight:800;
  line-height:1.25;
  letter-spacing:-.01em;
  margin-bottom:1rem;
  color:var(--text);
}
.section-desc{
  color:var(--muted);
  font-size:16px;
  line-height:1.9;
  max-width:720px;
}
.section-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  font-size:12px;
  font-weight:800;
  letter-spacing:.18em;
  color:#59605A;
  margin-bottom:1rem;
  text-transform:uppercase;
}
.section-eyebrow::before{
  content:"";
  display:inline-block;
  width:26px;
  height:2px;
  background:var(--green);
}

/* feature list */
.feature-list{border-bottom:1px solid var(--line)}
.feature-item{
  display:grid;
  grid-template-columns:110px 1fr 280px;
  gap:2rem;
  align-items:center;
  padding:2.6rem 0;
  border-top:1px solid var(--line);
  transition:background .25s ease;
}
.feature-item:hover{background:rgba(255,255,255,.4)}
.feature-num{
  font-size:clamp(3.6rem,6vw,5.2rem);
  font-weight:900;
  line-height:1;
  letter-spacing:-.02em;
  color:#E2DDD2;
  transition:color .3s;
}
.feature-item:hover .feature-num{color:var(--green)}
.feature-main h3{
  font-size:1.35rem;
  font-weight:800;
  margin-bottom:.7rem;
  color:var(--text);
  line-height:1.5;
}
.feature-main p{
  color:var(--muted);
  line-height:1.95;
  font-size:15px;
  max-width:660px;
}
.feature-tag{
  justify-self:start;
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  padding:8px 16px;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:13px;
  font-weight:700;
  color:#3B423D;
  background:var(--surface);
  white-space:nowrap;
}
.feature-tag svg{color:var(--muted)}

/* dark scenario */
.dark-section{
  background:var(--dark);
  color:var(--dark-text);
  padding:clamp(4.8rem,9vw,7.5rem) 0;
}
.dark-section .section-eyebrow{color:#C4CAC0}
.dark-section .section-eyebrow::before{background:var(--green)}
.dark-section .section-title{color:var(--dark-text)}
.dark-section .section-desc{color:rgba(247,244,238,.65)}
.step-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:2.8rem;
  margin-top:3.4rem;
}
.step-item{
  position:relative;
  padding-right:2rem;
}
.step-item:not(:last-child)::after{
  content:"";
  position:absolute;
  right:-1.4rem;
  top:3.2rem;
  width:2.8rem;
  height:1px;
  background:rgba(247,244,238,.2);
}
.step-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:62px;
  height:62px;
  border:1px solid rgba(247,244,238,.25);
  border-radius:6px;
  background:rgba(255,255,255,.02);
  color:var(--green);
  margin-bottom:1.5rem;
}
.step-order{
  font-size:13px;
  font-weight:800;
  letter-spacing:.12em;
  color:rgba(247,244,238,.5);
  margin-bottom:.8rem;
}
.step-item h3{
  font-size:1.3rem;
  font-weight:800;
  line-height:1.45;
  margin-bottom:.8rem;
  color:var(--dark-text);
}
.step-item p{
  font-size:15px;
  color:rgba(247,244,238,.66);
  line-height:1.9;
  margin-bottom:0;
}

/* info / coverage */
.info-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:2.8rem;
  align-items:center;
}
.info-text h2{
  font-size:clamp(1.8rem,3vw,2.4rem);
  font-weight:800;
  line-height:1.28;
  letter-spacing:-.01em;
  margin-bottom:1.2rem;
}
.info-text > p{
  color:var(--muted);
  line-height:2;
  margin-bottom:1.8rem;
}
.rule-list li{
  padding:1rem 0;
  border-top:1px solid var(--line);
  display:flex;
  align-items:flex-start;
  gap:1rem;
  font-size:15px;
  color:#343B35;
}
.rule-list li:last-child{border-bottom:1px solid var(--line)}
.rule-list svg{
  flex:0 0 auto;
  width:18px;
  height:18px;
  margin-top:.35rem;
  color:#5B6B3E;
}
.rule-list strong{
  font-weight:800;
  color:var(--text);
  margin-right:.25rem;
}
.info-media{
  position:relative;
  background:var(--surface);
  padding:10px;
  border:1px solid var(--line);
  border-radius:6px;
  box-shadow:var(--shadow);
}
.info-media img{
  display:block;
  width:100%;
  aspect-ratio:5/4;
  object-fit:cover;
  border-radius:4px;
  background:var(--bg-soft);
}
.info-media-caption{
  display:flex;
  justify-content:space-between;
  padding:1rem .6rem .3rem;
  font-size:13px;
  color:var(--muted);
}

/* version */
.version-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1.8rem;
  margin-top:3rem;
}
.version-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:6px;
  padding:2.3rem;
  display:flex;
  flex-direction:column;
  min-height:100%;
}
.version-card.dark{
  background:var(--dark);
  color:var(--dark-text);
  border-color:var(--dark);
}
.version-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  margin-bottom:1.5rem;
}
.version-head h3{
  font-size:1.5rem;
  font-weight:800;
  line-height:1.4;
}
.version-badge{
  display:inline-block;
  padding:5px 14px;
  border:1px solid var(--line-strong);
  border-radius:999px;
  font-size:12px;
  font-weight:800;
  letter-spacing:.05em;
  white-space:nowrap;
}
.version-card.dark .version-badge{
  border-color:rgba(255,255,255,.35);
  color:rgba(247,244,238,.85);
}
.version-points{
  display:grid;
  gap:0;
  margin-bottom:1.7rem;
}
.version-points li{
  padding:.82rem 0 .82rem 2rem;
  border-bottom:1px solid var(--line);
  position:relative;
  font-size:15px;
  color:#3B423D;
  line-height:1.75;
}
.version-card.dark .version-points li{
  border-bottom-color:rgba(247,244,238,.1);
  color:rgba(247,244,238,.76);
}
.version-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:1.28rem;
  width:8px;
  height:8px;
  background:var(--green);
  border-radius:2px;
}
.version-note{
  margin-top:auto;
  font-size:13px;
  color:var(--muted);
  line-height:1.8;
}
.version-card.dark .version-note{color:rgba(247,244,238,.48)}

/* cms news */
.cms-news-list{
  max-width:860px;
}
.news-item{
  display:grid;
  grid-template-columns:130px 1fr;
  gap:1.6rem 2.2rem;
  padding:1.9rem 0;
  border-bottom:1px solid var(--line);
  align-items:baseline;
}
.news-item:first-child{border-top:1px solid var(--line)}
.news-date{
  font-size:13px;
  font-weight:700;
  color:var(--muted);
  line-height:1.7;
}
.news-date span{display:block;font-weight:400;color:#9A958B;margin-top:.2rem}
.news-cat{
  display:inline-block;
  font-size:11px;
  font-weight:800;
  letter-spacing:.06em;
  color:#4A5048;
  border:1px solid var(--line-strong);
  border-radius:999px;
  padding:4px 12px;
  margin-bottom:.5rem;
  background:var(--surface);
}
.news-title{
  font-size:1.25rem;
  font-weight:800;
  line-height:1.55;
  margin-bottom:.5rem;
}
.news-title a{
  transition:color .25s, box-shadow .25s;
  background-image:linear-gradient(var(--green),var(--green));
  background-size:0 2px;
  background-position:left bottom;
  background-repeat:no-repeat;
}
.news-title a:hover{
  color:#0F1919;
  background-size:100% 2px;
}
.news-summary{
  color:var(--muted);
  font-size:15px;
  line-height:1.9;
  margin-bottom:.6rem;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-more{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  font-size:13px;
  font-weight:800;
  color:#343A36;
  transition:color .2s;
}
.news-more svg{transition:transform .25s}
.news-more:hover{color:#0F1919}
.news-more:hover svg{transform:translateX(4px)}
.news-empty{
  border:1px dashed var(--line-strong);
  border-radius:10px;
  min-height:190px;
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--muted);
  font-size:15px;
  text-align:center;
  background:rgba(255,255,255,.2);
}

/* faq */
.faq-layout{
  display:grid;
  grid-template-columns:380px 1fr;
  gap:clamp(2.5rem,5vw,5rem);
  align-items:start;
}
.faq-intro .section-desc{margin-top:1rem}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:1.2rem;
  padding:1.35rem .2rem;
  font-size:16px;
  font-weight:700;
  line-height:1.6;
  color:var(--text);
  transition:color .2s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:#2C4528}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:30px;
  height:30px;
  border:1px solid var(--line);
  border-radius:50%;
  transition:transform .3s,background .3s,border-color .3s;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  background:#3C423D;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:12px;height:1.5px}
.faq-icon::after{width:1.5px;height:12px}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--green);border-color:var(--green)}
.faq-item p{
  padding:0 3rem 1.6rem .2rem;
  margin:0;
  color:var(--muted);
  font-size:15px;
  line-height:1.95;
}

/* cta */
.cta-section{
  background:var(--bg-soft);
  padding:clamp(4.5rem,8vw,6.5rem) 0;
}
.cta-box{
  background:var(--dark);
  border-radius:6px;
  padding:clamp(2.5rem,6vw,4.5rem);
  color:var(--dark-text);
  text-align:center;
  position:relative;
  overflow:hidden;
}
.cta-box::before{
  content:"";
  position:absolute;
  top:-30%;
  right:-7%;
  width:260px;
  height:260px;
  background:radial-gradient(circle,rgba(206,255,77,.16) 0,rgba(206,255,77,0) 70%);
  pointer-events:none;
}
.cta-box h2{
  font-size:clamp(1.6rem,3.2vw,2.5rem);
  font-weight:900;
  line-height:1.3;
  color:var(--dark-text);
  margin-bottom:.6rem;
  letter-spacing:-.01em;
}
.cta-box .cta-sub{
  font-size:15px;
  color:rgba(247,244,238,.62);
  margin-bottom:2.2rem;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center}

/* footer */
.site-footer{
  background:#0E1010;
  color:rgba(247,244,238,.72);
  padding:4.8rem 0 0;
  font-size:14px;
}
.site-footer h3{
  color:var(--dark-text);
  font-size:14px;
  font-weight:800;
  letter-spacing:.05em;
  margin-bottom:1.2rem;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:.7rem;
  color:var(--dark-text);
  font-size:1.2rem;
  font-weight:900;
  margin-bottom:1rem;
}
.footer-desc{
  font-size:13px;
  line-height:1.95;
  color:rgba(247,244,238,.56);
  max-width:360px;
  margin-bottom:1.2rem;
}
.footer-links li{
  margin-bottom:.6rem;
}
.footer-links a{
  color:rgba(247,244,238,.62);
  font-size:13px;
  line-height:1.9;
  transition:color .2s,padding-left .2s;
}
.footer-links a:hover{color:var(--green);padding-left:4px}
.footer-note{
  background:rgba(255,255,255,.03);
  padding:1rem 1.2rem;
  border-left:2px solid var(--coral);
  border-radius:2px;
  font-size:12px;
  line-height:1.9;
  color:rgba(247,244,238,.56);
}
.footer-bottom{
  border-top:1px solid rgba(247,244,238,.08);
  margin-top:4rem;
  padding:1.6rem 0;
  font-size:13px;
  color:rgba(247,244,238,.46);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:.8rem;
}
.footer-bottom .site-domain{
  color:rgba(247,244,238,.34);
}
.footer-row{row-gap:2.5rem}

/* reveal */
.reveal{
  opacity:0;
  transform:translateY(22px);
  transition:opacity .65s ease,transform .65s ease;
}
.reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
}

/* responsive */
@media(max-width:1199.98px){
  .container{max-width:960px}
  .nav-link{padding:.9rem .5rem !important}
  .feature-item{grid-template-columns:90px 1fr 1.6fr;gap:1.4rem}
  .feature-tag{display:none}
  .hero-media{display:none}
}
@media(min-width:992px){
  .navbar-collapse{display:flex !important;align-items:center}
  .menu-toggle{display:none}
}
@media(max-width:991.98px){
  .navbar .container{flex-wrap:wrap}
  .nav-extra{order:3;width:100%;padding-top:.8rem}
  .btn-entry{width:100%;justify-content:center}
  .navbar-collapse{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:6px;
    padding:1rem 1.2rem;
    margin-top:.8rem;
    box-shadow:0 18px 40px rgba(0,0,0,.06);
  }
  .navbar-nav{gap:0;width:100%}
  .nav-link{padding:.85rem .25rem !important;border-bottom:1px solid var(--bg-soft);border-radius:0 !important;width:100%}
  .nav-link::after{left:.3rem;transform:none;top:auto;bottom:.9rem}
  .nav-link:hover::after,.nav-link.active::after{width:24px}
  .hero{min-height:auto;padding:5rem 0}
  .cat-grid{grid-template-columns:1fr 1fr}
  .cat-item{border-bottom:1px solid var(--line)}
  .cat-item:nth-child(2n){border-right:0}
  .cat-item:nth-child(3),.cat-item:nth-child(4){border-bottom:0}
  .feature-item{grid-template-columns:76px 1fr;gap:1.2rem}
  .feature-item:hover{background:none}
  .feature-side{display:none}
  .step-grid{grid-template-columns:1fr 1fr;gap:2.2rem}
  .step-item{padding-right:0}
  .step-item:nth-child(3){grid-column:1 / -1}
  .step-item:not(:last-child)::after{display:none}
  .info-grid{grid-template-columns:1fr}
  .faq-layout{grid-template-columns:1fr}
  .version-grid{grid-template-columns:1fr}
  .news-item{grid-template-columns:1fr;gap:.5rem}
  .news-date span{display:inline}
}
@media(max-width:575.98px){
  body{font-size:15px}
  .brand-text{font-size:1rem}
  .brand-logo{width:28px;height:28px}
  .hero{padding:3.8rem 0 3.2rem;background-position:center}
  .hero-actions .btn-lg-custom{width:100%;justify-content:center}
  .cat-grid{grid-template-columns:1fr}
  .cat-item{border-right:0;min-height:130px;padding:1.4rem}
  .cat-item:nth-child(n){border-bottom:1px solid var(--line)}
  .cat-item:last-child{border-bottom:0}
  .feature-item{grid-template-columns:58px 1fr;gap:.8rem;padding:1.8rem 0}
  .feature-num{font-size:3rem}
  .step-grid{grid-template-columns:1fr}
  .step-item:nth-child(3){grid-column:auto}
  .version-card{padding:1.6rem}
  .cta-box{padding:2.2rem 1.4rem}
  .footer-bottom{flex-direction:column}
  .section-title{line-height:1.3}
}

/* roulang page: article */
:root {
            --bg: #F7F4EE;
            --bg-alt: #EDE9E1;
            --surface: #FFFFFF;
            --text: #17191A;
            --text-sub: #6A6A64;
            --border: #E7E2DA;
            --dark: #121414;
            --dark-text: #F7F4EE;
            --accent: #CEFF4D;
            --accent-hover: #E7FF8A;
            --point: #FF6B45;
            --link-hover: #2E4B3B;
            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-pill: 999px;
            --shadow-card: 0 1px 2px rgba(0,0,0,0.03);
            --shadow-hover: 0 12px 30px rgba(0,0,0,0.08);
            --font: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
        }

        a {
            color: var(--text);
            text-decoration: none;
            transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, opacity 0.2s ease;
        }

        a:hover {
            color: var(--link-hover);
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .site-header {
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            position: relative;
            z-index: 1030;
        }

        .site-header .navbar {
            min-height: 80px;
            padding: 0;
            flex-wrap: nowrap;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.15rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--text);
            line-height: 1.2;
            flex-shrink: 0;
        }

        .brand:hover {
            color: var(--text);
        }

        .brand-logo {
            display: inline-flex;
            filter: drop-shadow(0 2px 8px rgba(0,0,0,0.04));
        }

        .brand-logo svg,
        .footer-brand svg {
            display: block;
        }

        .menu-toggle {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: 1px solid var(--border);
            background: var(--surface);
            padding: 8px 14px;
            border-radius: var(--radius-md);
            color: var(--text);
            font-size: 14px;
            font-weight: 600;
            line-height: 1;
            margin-left: auto;
        }

        .menu-toggle:focus {
            box-shadow: 0 0 0 4px rgba(206, 255, 77, 0.5);
            outline: none;
        }

        .hamburger {
            display: inline-flex;
            flex-direction: column;
            gap: 4px;
            width: 16px;
        }

        .hamburger i {
            width: 16px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
        }

        .navbar-nav {
            gap: 6px;
            align-items: center;
            margin-left: auto;
            flex-wrap: wrap;
        }

        .navbar-nav .nav-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            padding: 10px 10px !important;
            position: relative;
            border-bottom: 2px solid transparent;
            display: inline-block;
        }

        .navbar-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 10px;
            right: 10px;
            bottom: -2px;
            height: 2px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.2s ease;
        }

        .navbar-nav .nav-link:hover {
            color: #000;
        }

        .navbar-nav .nav-link:hover::after {
            transform: scaleX(1);
        }

        .navbar-nav .nav-link.active {
            color: var(--text);
        }

        .navbar-nav .nav-link.active::after {
            transform: scaleX(0.5);
        }

        .nav-extra {
            margin-left: 18px;
            flex-shrink: 0;
        }

        .btn-entry {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--accent);
            border: 1px solid transparent;
            color: var(--text);
            font-size: 14px;
            font-weight: 700;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-md);
            text-decoration: none;
            transition: background-color 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
            white-space: nowrap;
        }

        .btn-entry:hover {
            background: var(--accent-hover);
            color: var(--text);
            transform: translateX(4px);
        }

        .btn-entry:focus,
        .btn-outline:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(206, 255, 77, 0.45);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            border: 1px solid var(--text-sub);
            color: var(--text);
            font-size: 14px;
            font-weight: 600;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-md);
            text-decoration: none;
            transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
        }

        .btn-outline:hover {
            border-color: var(--text);
            background: var(--bg-alt);
            color: var(--text);
        }

        .article-page {
            background: var(--bg);
        }

        .article-lead {
            position: relative;
            background-color: var(--bg-alt);
            background-image: linear-gradient(rgba(23, 25, 26, 0.76), rgba(23, 25, 26, 0.82)), url('/assets/images/backpic/back-1.webp');
            background-position: center;
            background-size: cover;
            background-repeat: no-repeat;
            color: var(--dark-text);
            padding: clamp(2.6rem, 6vw, 4.5rem) 0 2.8rem;
        }

        .article-lead a {
            color: rgba(247, 244, 238, 0.82);
        }

        .article-lead a:hover {
            color: var(--accent);
        }

        .article-lead-inner {
            max-width: 880px;
        }

        .article-lead .breadcrumb-nav {
            margin-bottom: 1.5rem;
        }

        .article-lead .breadcrumb {
            margin: 0;
            --bs-breadcrumb-divider: "/";
            display: flex;
            flex-wrap: wrap;
            gap: 4px;
            list-style: none;
            padding: 0;
        }

        .article-lead .breadcrumb-item {
            font-size: 13px;
            font-weight: 500;
            color: rgba(247, 244, 238, 0.65);
        }

        .article-lead .breadcrumb-item + .breadcrumb-item::before {
            content: "/";
            color: rgba(247, 244, 238, 0.35);
            padding: 0 6px;
        }

        .article-lead .breadcrumb-item.active,
        .article-lead .breadcrumb-item.current {
            color: rgba(247, 244, 238, 0.9);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cat-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 1px solid rgba(206, 255, 77, 0.44);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            padding: 3px 14px 3px 12px;
            border-radius: var(--radius-pill);
            margin-bottom: 0.9rem;
            background: rgba(18, 20, 20, 0.18);
            backdrop-filter: blur(4px);
        }

        .article-title {
            font-size: clamp(1.9rem, 4.4vw, 3.2rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin: 0 0 1rem;
            color: #fff;
            word-break: break-word;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 22px;
            align-items: center;
            font-size: 13px;
            color: rgba(247, 244, 238, 0.74);
            margin-top: 0.2rem;
            list-style: none;
            padding: 0;
        }

        .article-meta .meta-divider {
            width: 3px;
            height: 3px;
            background: var(--accent);
            border-radius: 50%;
            opacity: 0.7;
        }

        .article-main-wrap {
            background: var(--bg);
            padding-bottom: 4rem;
        }

        .article-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 10px;
            box-shadow: var(--shadow-card);
            max-width: 880px;
            margin: -16px auto 0;
            position: relative;
            z-index: 2;
            padding: clamp(1.4rem, 4vw, 3.2rem);
        }

        .article-body {
            font-size: 17px;
            line-height: 1.95;
            color: var(--text);
            word-break: break-word;
            overflow-wrap: break-word;
        }

        .article-body h2 {
            font-size: clamp(1.4rem, 2.6vw, 1.85rem);
            font-weight: 800;
            line-height: 1.45;
            margin: 2.6rem 0 1rem;
            padding-top: 0.2rem;
            position: relative;
        }

        .article-body h2::before {
            content: "";
            display: inline-block;
            width: 16px;
            height: 4px;
            background: var(--accent);
            vertical-align: middle;
            margin-right: 10px;
            border-radius: 2px;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            line-height: 1.5;
            margin: 2rem 0 0.7rem;
        }

        .article-body p {
            margin: 0 0 1.1rem;
            color: #2A2B2C;
        }

        .article-body a {
            color: #245A3E;
            text-decoration: underline;
            text-underline-offset: 2px;
            text-decoration-color: rgba(36, 90, 62, 0.35);
        }

        .article-body a:hover {
            color: #111;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 1.4rem;
            padding-left: 1.4rem;
        }

        .article-body li {
            margin-bottom: 0.4rem;
        }

        .article-body blockquote {
            position: relative;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-left: 4px solid var(--accent);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 1.8rem 0;
            padding: 1.1rem 1.4rem;
            color: #3A3B3C;
            font-size: 0.98rem;
        }

        .article-body img {
            border-radius: 8px;
            border: 1px solid var(--border);
            margin: 1.4rem 0;
            width: auto;
            max-width: 100%;
            background: var(--bg-alt);
        }

        .article-body hr {
            margin: 2.4rem 0;
            border: none;
            border-top: 1px solid var(--border);
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6rem 0;
            font-size: 15px;
        }

        .article-body th,
        .article-body td {
            border: 1px solid var(--border);
            padding: 10px 12px;
            text-align: left;
        }

        .article-body th {
            background: var(--bg-alt);
            font-weight: 700;
        }

        .article-bottom {
            border-top: 1px solid var(--border);
            margin-top: 2.8rem;
            padding-top: 1.6rem;
        }

        .post-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
            margin-bottom: 1.2rem;
        }

        .tag-label {
            font-size: 13px;
            color: var(--text-sub);
            margin-right: 2px;
            font-weight: 600;
        }

        .tag-link {
            display: inline-flex;
            align-items: center;
            padding: 4px 13px;
            border: 1px solid var(--border);
            background: var(--bg);
            font-size: 12px;
            color: var(--text-sub);
            border-radius: var(--radius-pill);
            transition: all 0.2s ease;
            text-decoration: none;
        }

        .tag-link:hover {
            border-color: var(--text);
            color: var(--text);
            background: var(--surface);
        }

        .post-back {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 18px;
            justify-content: space-between;
            padding-top: 0.8rem;
        }

        .post-back .back-link {
            font-size: 14px;
            color: var(--text-sub);
            text-decoration: none;
        }

        .post-back .back-link:hover {
            color: var(--text);
        }

        .article-not-found {
            text-align: center;
            padding: 4rem 1.5rem;
            background: var(--surface);
            border: 1px dashed var(--border);
            border-radius: 12px;
            margin: 0 auto;
            max-width: 520px;
            color: var(--text-sub);
        }

        .article-not-found h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.8rem;
        }

        .article-not-found a {
            margin-top: 1.2rem;
        }

        .cms-related-zone {
            background: var(--bg);
            padding: 2rem 0 3rem;
            max-width: 880px;
            margin: 0 auto;
        }

        .related-empty {
            border: 1px dashed var(--border);
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.55);
            padding: 1rem 1.4rem;
            font-size: 13px;
            color: var(--text-sub);
        }

        .related-empty a {
            color: var(--text);
            font-weight: 600;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-cta {
            background-color: var(--dark);
            background-image: linear-gradient(rgba(18, 20, 20, 0.7), rgba(18, 20, 20, 0.72)), url('/assets/images/backpic/back-2.png');
            background-position: center;
            background-size: cover;
            color: var(--dark-text);
            padding: clamp(2.8rem, 6vw, 5rem) 0;
            margin-top: 1rem;
        }

        .article-cta .container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .article-cta h2 {
            font-size: clamp(1.5rem, 2.8vw, 2rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin: 0 0 0.4rem;
        }

        .article-cta p {
            color: rgba(247, 244, 238, 0.72);
            font-size: 15px;
            margin: 0;
            max-width: 600px;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            flex-shrink: 0;
        }

        .btn-dark-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            border: 1px solid rgba(247, 244, 238, 0.5);
            color: var(--dark-text);
            font-size: 14px;
            font-weight: 600;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-md);
            transition: all 0.2s ease;
            text-decoration: none;
        }

        .btn-dark-link:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(206, 255, 77, 0.06);
        }

        .site-footer {
            background: var(--dark);
            color: rgba(247, 244, 238, 0.76);
            padding: clamp(2.8rem, 5vw, 4.4rem) 0 1rem;
            font-size: 13px;
            line-height: 1.9;
        }

        .site-footer a {
            color: rgba(247, 244, 238, 0.7);
            text-decoration: none;
        }

        .site-footer a:hover {
            color: var(--accent);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 17px;
            font-weight: 800;
            margin-bottom: 0.7rem;
        }

        .footer-brand svg {
            flex-shrink: 0;
        }

        .footer-desc {
            color: rgba(247, 244, 238, 0.55);
            margin: 0;
            line-height: 1.9;
            font-size: 13px;
        }

        .site-footer h3 {
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 0.8rem;
            letter-spacing: 0.02em;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 0.3rem;
        }

        .footer-note {
            color: rgba(247, 244, 238, 0.52);
            font-size: 13px;
            line-height: 1.9;
        }

        .footer-bottom {
            border-top: 1px solid rgba(247, 244, 238, 0.12);
            margin-top: 2.4rem;
            padding: 1.1rem 0 0.6rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 6px 18px;
            color: rgba(247, 244, 238, 0.4);
            font-size: 12px;
        }

        .footer-bottom .site-domain {
            letter-spacing: 0.03em;
        }

        .footer-row {
            row-gap: 1.5rem;
        }

        @media (max-width: 991.98px) {
            .site-header .navbar {
                min-height: 72px;
            }

            .navbar-collapse {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg);
                border-bottom: 1px solid var(--border);
                padding: 12px 24px 22px;
                box-shadow: 0 18px 36px rgba(0, 0, 0, 0.08);
                margin: 0 !important;
            }

            .navbar-nav {
                align-items: flex-start;
                gap: 6px;
                margin: 0 0 12px 0;
                flex-direction: column;
                border-top: 1px solid var(--border);
                padding-top: 10px;
            }

            .navbar-nav .nav-link {
                padding: 8px 0 !important;
                font-size: 15px;
                width: 100%;
            }

            .navbar-nav .nav-link::after {
                left: 0;
                right: auto;
                width: 18px;
                transform: scaleX(0);
            }

            .navbar-nav .nav-link.active::after,
            .navbar-nav .nav-link:hover::after {
                transform: scaleX(1);
            }

            .nav-extra {
                margin-left: 0;
                border-top: 1px solid var(--border);
                padding-top: 14px;
            }

            .nav-extra .btn-entry {
                width: 100%;
            }

            .article-card {
                margin-top: -10px;
                padding: 1.5rem;
            }

            .article-body {
                font-size: 16px;
            }

            .article-cta .container {
                align-items: flex-start;
                flex-direction: column;
            }

            .cta-actions {
                width: 100%;
            }

            .cta-actions .btn-entry,
            .cta-actions .btn-dark-link {
                flex: 1;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .brand-text {
                font-size: 1rem;
                line-height: 1.3;
                max-width: 130px;
            }

            .menu-toggle {
                padding: 6px 10px;
                gap: 6px;
            }

            .article-lead {
                padding: 1.8rem 0;
            }

            .article-lead .breadcrumb-item.active {
                max-width: 170px;
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
                display: inline-block;
                vertical-align: middle;
            }

            .article-title {
                font-size: 1.7rem;
            }

            .article-card {
                margin-top: -8px;
                padding: 1.2rem;
                border-radius: 8px;
            }

            .article-body {
                font-size: 15px;
            }

            .post-back {
                justify-content: flex-start;
                flex-direction: column;
                align-items: flex-start;
            }

            .article-meta {
                row-gap: 6px;
            }

            .article-meta .meta-divider {
                display: none;
            }

            .article-meta .meta-item {
                margin-right: 0;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                margin-top: 1.8rem;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category1 */
:root {
            --paper: #F7F4EE;
            --paper-2: #EDE9E1;
            --surface: #FFFFFF;
            --ink: #17191A;
            --grey: #6A6A64;
            --line: #E4DFD6;
            --line-strong: #D3CCBF;
            --deep: #121414;
            --lime: #CEFF4D;
            --lime-hover: #E7FF8A;
            --coral: #FF6B45;
            --radius: 6px;
            --radius-card: 4px;
            --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.08);
            --section-pad: clamp(5rem, 9vw, 8rem);
            --font-main: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.8;
            color: var(--ink);
            background: var(--paper);
            -webkit-font-smoothing: antialiased;
        }

        body.no-scroll {
            overflow: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease, background-color .2s ease, border-color .2s ease;
        }

        a:hover {
            color: var(--ink);
        }

        p {
            margin: 0;
            padding: 0;
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            font-weight: 800;
            line-height: 1.3;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        ::selection {
            background: var(--lime);
            color: var(--ink);
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 767.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ---------- Header / Nav ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1040;
            background: var(--paper);
            border-bottom: 1px solid var(--line);
        }

        .site-header .navbar {
            min-height: 80px;
            padding: 0;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: nowrap;
        }

        .site-header .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .site-header .brand-logo svg {
            display: block;
            width: 34px;
            height: 34px;
        }

        .site-header .brand-text {
            font-size: 19px;
            font-weight: 900;
            letter-spacing: -0.01em;
            color: var(--ink);
            white-space: nowrap;
        }

        .site-header .navbar-collapse {
            flex-grow: 0;
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 16px;
        }

        .site-header .navbar-nav {
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .site-header .nav-link {
            position: relative;
            padding: 12px 14px;
            font-size: 15px;
            font-weight: 600;
            color: #3B3D3C;
            white-space: nowrap;
            transition: color .2s ease;
        }

        .site-header .nav-link:hover {
            color: var(--ink);
        }

        .site-header .nav-link::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 4px;
            width: 22px;
            height: 2px;
            background: var(--lime);
            opacity: 0;
            transform: translateX(-50%) scaleX(.4);
            transition: opacity .2s ease, transform .2s ease;
        }

        .site-header .nav-link:hover::after,
        .site-header .nav-link.active::after {
            opacity: 1;
            transform: translateX(-50%) scaleX(1);
        }

        .site-header .nav-link.active {
            color: var(--ink);
            font-weight: 700;
        }

        .site-header .btn-entry {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 22px;
            background: var(--lime);
            border: 0;
            border-radius: var(--radius);
            color: var(--ink);
            font-size: 15px;
            font-weight: 700;
            white-space: nowrap;
            transition: background-color .2s ease, transform .2s ease, box-shadow .2s ease;
        }

        .site-header .btn-entry:hover {
            background: var(--lime-hover);
            color: var(--ink);
            transform: translateY(-1px);
            box-shadow: 0 8px 18px rgba(18, 20, 20, .07);
        }

        .site-header .btn-entry svg {
            transition: transform .2s ease;
        }

        .site-header .btn-entry:hover svg {
            transform: translateX(4px);
        }

        .navbar-toggler.menu-toggle {
            display: none;
        }

        @media (max-width: 991.98px) {
            .navbar-toggler.menu-toggle {
                display: inline-flex;
                align-items: center;
                gap: 8px;
                border: 0;
                background: transparent;
                color: var(--ink);
                padding: 8px 6px;
            }

            .navbar-toggler.menu-toggle span {
                font-size: 14px;
                font-weight: 700;
                color: var(--ink);
            }

            .navbar-toggler.menu-toggle .hamburger {
                display: inline-flex;
                flex-direction: column;
                justify-content: center;
                gap: 4px;
                width: 22px;
                height: 22px;
            }

            .navbar-toggler.menu-toggle .hamburger i {
                display: block;
                width: 100%;
                height: 2px;
                background: var(--ink);
            }

            .site-header .navbar-collapse {
                display: none;
                position: absolute;
                left: 0;
                right: 0;
                top: 100%;
                background: var(--surface);
                border-bottom: 1px solid var(--line);
                padding: 16px 24px 24px;
                align-items: stretch;
            }

            .site-header .navbar-collapse.show {
                display: flex;
                flex-direction: column;
            }

            .site-header .navbar-nav {
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                gap: 0;
                border-top: 1px solid var(--line);
            }

            .site-header .nav-item {
                border-bottom: 1px solid var(--line);
            }

            .site-header .nav-link {
                display: block;
                padding: 14px 4px;
                font-size: 16px;
            }

            .site-header .nav-link::after {
                display: none;
            }

            .site-header .nav-extra {
                margin-top: 18px;
                display: block;
            }

            .site-header .btn-entry {
                width: 100%;
                height: 48px;
            }
        }

        @media (min-width: 992px) {
            .site-header .navbar-collapse {
                display: flex !important;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.001s !important;
                transition-duration: 0.001s !important;
            }
            html {
                scroll-behavior: auto;
            }
        }

        /* ---------- Hero ---------- */
        .cat-hero {
            position: relative;
            padding: clamp(4.6rem, 8vw, 7rem) 0;
            background-color: #1D1F1C;
            background-image: linear-gradient(90deg, rgba(18, 20, 20, .93) 0%, rgba(18, 20, 20, .78) 60%, rgba(18, 20, 20, .62) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            color: var(--deep);
            overflow: hidden;
        }

        .cat-hero .container {
            position: relative;
        }

        .cat-hero-inner {
            max-width: 900px;
        }

        .cat-hero .hero-tagline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 22px;
            padding: 6px 14px;
            border: 1px solid rgba(206, 255, 77, .4);
            border-radius: 999px;
            color: var(--lime);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .03em;
            background: rgba(206, 255, 77, .08);
        }

        .cat-hero h1 {
            color: #FFFFFF;
            font-size: clamp(2.4rem, 5.5vw, 4.2rem);
            line-height: 1.18;
            letter-spacing: -0.02em;
            max-width: 820px;
            animation: heroRise .6s ease both;
        }

        .cat-hero .hero-lead {
            margin-top: 22px;
            color: rgba(247, 244, 238, .85);
            font-size: 17px;
            line-height: 2;
            max-width: 640px;
            animation: heroRise .6s .1s ease both;
        }

        .cat-hero .hero-cta-row {
            margin-top: 34px;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            animation: heroRise .6s .2s ease both;
        }

        .btn-solid {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--lime);
            color: var(--ink);
            border: 1px solid var(--lime);
            border-radius: var(--radius);
            height: 50px;
            padding: 0 28px;
            font-weight: 800;
            font-size: 16px;
            transition: background-color .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
        }

        .btn-solid:hover {
            background: var(--lime-hover);
            border-color: var(--lime-hover);
            color: var(--ink);
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, .1);
        }

        .btn-solid svg {
            transition: transform .2s ease;
        }

        .btn-solid:hover svg {
            transform: translateX(4px);
        }

        .btn-ghost-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: #FFFFFF;
            border: 1px solid rgba(247, 244, 238, .55);
            border-radius: var(--radius);
            height: 50px;
            padding: 0 26px;
            font-weight: 700;
            font-size: 16px;
            transition: border-color .2s ease, background-color .2s ease;
        }

        .btn-ghost-light:hover {
            border-color: #FFFFFF;
            background: rgba(255, 255, 255, .06);
            color: #FFFFFF;
        }

        .cat-hero .hero-note {
            margin-top: 30px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(247, 244, 238, .55);
            font-size: 13px;
        }

        @keyframes heroRise {
            from {
                opacity: 0;
                transform: translateY(18px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ---------- Section common ---------- */
        .section-pad {
            padding: var(--section-pad) 0;
        }

        .section-head {
            margin-bottom: clamp(3rem, 6vw, 4.5rem);
        }

        .section-head .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--grey);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .08em;
            text-transform: none;
            margin-bottom: 10px;
        }

        .section-head .section-kicker::before {
            content: "";
            display: inline-block;
            width: 26px;
            height: 2px;
            background: var(--lime);
        }

        .section-head h2 {
            font-size: clamp(2rem, 3.6vw, 2.8rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--ink);
        }

        .section-head p {
            margin-top: 16px;
            max-width: 680px;
            color: var(--grey);
            font-size: 16px;
            line-height: 1.9;
        }

        .section-head.head-light h2 {
            color: #FFFFFF;
        }

        .section-head.head-light p {
            color: rgba(247, 244, 238, .7);
        }

        /* ---------- Entry strip ---------- */
        .entry-strip {
            background: var(--paper);
            border-bottom: 1px solid var(--line);
        }

        .entry-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            border: 1px solid var(--line);
            background: var(--surface);
            border-radius: var(--radius);
        }

        .entry-list .entry-item {
            padding: 30px 26px 32px;
            border-right: 1px solid var(--line);
        }

        .entry-list .entry-item:last-child {
            border-right: 0;
        }

        .entry-list .entry-num {
            display: block;
            font-size: 44px;
            font-weight: 900;
            line-height: 1;
            color: rgba(206, 255, 77, 1);
            letter-spacing: -0.02em;
            margin-bottom: 26px;
            font-family: inherit;
        }

        .entry-list .entry-item:nth-child(2) .entry-num {
            color: rgba(18, 20, 20, .08);
            -webkit-text-stroke: 2px rgba(18, 20, 20, .55);
        }

        .entry-list .entry-item:nth-child(3) .entry-num {
            color: var(--lime);
            text-shadow: 0 0 0 transparent;
            color: rgba(206, 255, 77, 1);
        }

        .entry-list .entry-item:nth-child(4) .entry-num {
            color: rgba(255, 107, 69, 1);
        }

        .entry-list h3 {
            font-size: 18px;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: 8px;
        }

        .entry-list p {
            font-size: 14px;
            color: var(--grey);
            line-height: 1.8;
        }

        @media (max-width: 991.98px) {
            .entry-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .entry-list .entry-item {
                border-bottom: 1px solid var(--line);
            }
            .entry-list .entry-item:nth-child(2) {
                border-right: 0;
            }
            .entry-list .entry-item:nth-child(3) {
                border-bottom: 0;
            }
            .entry-list .entry-item:nth-child(4) {
                border-bottom: 0;
            }
        }

        @media (max-width: 575.98px) {
            .entry-list {
                grid-template-columns: 1fr;
            }
            .entry-list .entry-item {
                border-right: 0;
                border-bottom: 1px solid var(--line);
            }
            .entry-list .entry-item:last-child {
                border-bottom: 0;
            }
        }

        /* ---------- hub cards ---------- */
        .hub-section {
            background: var(--paper-2);
        }

        .hub-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .hub-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: box-shadow .25s ease, transform .25s ease;
            position: relative;
        }

        .hub-card::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: 2px;
            background: var(--lime);
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform .3s ease;
            z-index: 1;
        }

        .hub-card:hover {
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }

        .hub-card:hover::before {
            transform: scaleX(1);
        }

        .hub-media {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: var(--surface);
        }

        .hub-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .hub-card:hover .hub-media img {
            transform: scale(1.02);
        }

        .hub-card-body {
            padding: 26px 26px 28px;
        }

        .hub-card-body .hub-tag-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            margin-bottom: 12px;
        }

        .tag-sm {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 4px 10px;
            border: 1px solid var(--line-strong);
            border-radius: 999px;
            font-size: 12px;
            letter-spacing: .03em;
            font-weight: 700;
            color: var(--grey);
            background: var(--surface);
        }

        .tag-hot {
            border-color: rgba(255, 107, 69, .5);
            color: #C84B27;
            background: rgba(255, 107, 69, .05);
        }

        .hub-card-body h3 {
            font-size: 20px;
            font-weight: 800;
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .hub-card-body p {
            font-size: 15px;
            color: var(--grey);
            line-height: 1.9;
        }

        .hub-read {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: 16px;
            font-size: 14px;
            font-weight: 700;
            color: var(--ink);
            transition: gap .2s ease;
        }

        .hub-read:hover {
            gap: 11px;
            color: var(--ink);
        }

        @media (max-width: 767.98px) {
            .hub-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ---------- process ---------- */
        .process-section {
            background: var(--deep);
            color: #FFFFFF;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            counter-reset: process;
        }

        .process-cell {
            position: relative;
            padding: 24px 28px 26px;
            border-right: 1px solid rgba(247, 244, 238, .12);
        }

        .process-cell:last-child {
            border-right: 0;
        }

        .process-cell .step-mark {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--lime);
            color: var(--ink);
            font-size: 17px;
            font-weight: 900;
            margin-bottom: 22px;
        }

        .process-cell h3 {
            font-size: 17px;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 8px;
        }

        .process-cell p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(247, 244, 238, .6);
        }

        @media (max-width: 991.98px) {
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                row-gap: 4px;
            }
            .process-cell:nth-child(2) {
                border-right: 0;
            }
            .process-cell:nth-child(n+3) {
                border-top: 1px solid rgba(247, 244, 238, .1);
            }
        }

        @media (max-width: 575.98px) {
            .process-grid {
                grid-template-columns: 1fr;
            }
            .process-cell {
                border-right: 0;
                border-bottom: 1px solid rgba(247, 244, 238, .12);
            }
            .process-cell:last-child {
                border-bottom: 0;
            }
        }

        /* ---------- check list ---------- */
        .check-section {
            background: var(--paper);
        }

        .check-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: start;
        }

        .check-block {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 34px 32px 30px;
        }

        .check-block .check-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .check-block .check-title .icon-square {
            width: 32px;
            height: 32px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--lime);
            border-radius: 6px;
            flex: 0 0 32px;
        }

        .check-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .check-list li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            color: var(--ink);
            font-size: 15px;
            line-height: 1.8;
        }

        .check-list li .check-icon {
            width: 18px;
            height: 18px;
            flex: 0 0 18px;
            margin-top: 6px;
            color: var(--lime);
            background: var(--ink);
            border-radius: 50%;
        }

        @media (max-width: 991.98px) {
            .check-layout {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ---------- FAQ ---------- */
        .faq-section {
            background: var(--paper);
            border-top: 1px solid var(--line);
        }

        .faq-layout {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 60px;
            align-items: start;
        }

        .faq-heading .faq-index {
            font-size: 44px;
            font-weight: 900;
            line-height: 1;
            -webkit-text-stroke: 2px rgba(18, 20, 20, .55);
            color: transparent;
            display: block;
            margin-bottom: 20px;
        }

        .faq-heading h2 {
            font-size: clamp(1.9rem, 3vw, 2.6rem);
            line-height: 1.3;
            color: var(--ink);
        }

        .faq-heading p {
            margin-top: 16px;
            color: var(--grey);
            line-height: 1.9;
            max-width: 380px;
        }

        .faq-list {
            border-top: 1px solid var(--line);
        }

        .faq-item {
            border-bottom: 1px solid var(--line);
        }

        .faq-item summary {
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 18px;
            padding: 20px 0;
            cursor: pointer;
            font-weight: 700;
            font-size: 16px;
            color: var(--ink);
            transition: color .2s ease;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:hover {
            color: #4E5A36;
        }

        .faq-item summary::after {
            content: "+";
            font-size: 26px;
            font-weight: 300;
            line-height: 1;
            color: var(--grey);
            transition: transform .2s ease, color .2s ease;
            display: block;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
            color: var(--ink);
        }

        .faq-answer {
            padding: 0 0 22px;
            color: var(--grey);
            font-size: 15px;
            line-height: 1.9;
            max-width: 760px;
        }

        @media (max-width: 991.98px) {
            .faq-layout {
                grid-template-columns: 1fr;
                gap: 26px;
            }
        }

        /* ---------- CTA ---------- */
        .cta-band {
            background: var(--deep);
            padding: clamp(5rem, 10vw, 8.2rem) 0;
            text-align: center;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }

        .cta-band .cta-ring {
            position: absolute;
            left: 50%;
            top: 50%;
            width: 560px;
            height: 560px;
            transform: translate(-50%, -50%);
            border: 1px solid rgba(206, 255, 77, .16);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-band .container {
            position: relative;
        }

        .cta-band h2 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.3;
        }

        .cta-band p {
            max-width: 560px;
            margin: 18px auto 0;
            color: rgba(247, 244, 238, .7);
            font-size: 16px;
            line-height: 1.9;
        }

        .cta-btn-row {
            margin-top: 36px;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--deep);
            color: rgba(247, 244, 238, .7);
            padding: 64px 0 0;
            font-size: 13px;
            line-height: 1.9;
        }

        .site-footer a {
            color: rgba(247, 244, 238, .7);
            text-decoration: none;
            transition: color .2s ease, opacity .2s ease;
        }

        .site-footer a:hover {
            color: var(--lime);
        }

        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 900;
            color: #FFFFFF;
            margin-bottom: 14px;
        }

        .site-footer .footer-desc {
            color: rgba(247, 244, 238, .55);
            line-height: 1.9;
            max-width: 340px;
        }

        .site-footer .footer-row {
            padding-bottom: 46px;
            border-bottom: 1px solid rgba(247, 244, 238, .12);
        }

        .site-footer h3 {
            color: #FFFFFF;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: .04em;
            margin: 6px 0 14px;
        }

        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .site-footer .footer-links li {
            margin-bottom: 2px;
        }

        .site-footer .footer-note {
            background: rgba(247, 244, 238, .04);
            border: 1px solid rgba(247, 244, 238, .1);
            border-radius: 6px;
            padding: 14px 14px 16px;
            color: rgba(247, 244, 238, .62);
        }

        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px 24px;
            padding: 24px 0 26px;
            color: rgba(247, 244, 238, .42);
        }

        .site-footer .footer-bottom .site-domain {
            font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
            letter-spacing: .02em;
        }

        @media (max-width: 991.98px) {
            .site-footer .footer-row {
                row-gap: 28px;
            }
        }

        @media (max-width: 575.98px) {
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

        :focus-visible {
            outline: 2px solid var(--ink);
            outline-offset: 3px;
        }

        .btn-solid:focus-visible,
        .btn-ghost-light:focus-visible,
        .site-header .btn-entry:focus-visible {
            outline: 3px solid rgba(206, 255, 77, .75);
            outline-offset: 2px;
        }

/* roulang page: category2 */
:root{
  --page:#F7F4EE;
  --page-2:#EDE9E1;
  --surface:#FFFFFF;
  --ink:#17191A;
  --ink-2:#6A6A64;
  --line:#E4DFD6;
  --line-card:#E7E2DA;
  --dark:#121414;
  --light-text:#F7F4EE;
  --brand:#CEFF4D;
  --brand-hover:#E7FF8A;
  --coral:#FF6B45;
  --radius:6px;
  --radius-sm:4px;
  --shadow-card:0 12px 30px rgba(0,0,0,.06);
  --container-max:1200px;
  --font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-family);
  background:var(--page);
  color:var(--ink);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink);text-decoration:none;}
a:hover{color:#075E53;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;}

.container{max-width:var(--container-max);}

.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(247,244,238,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.site-header .navbar{
  min-height:80px;
  padding:0;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  color:var(--ink);
  text-decoration:none;
  flex-shrink:0;
}
.brand:hover{color:var(--ink);}
.brand-text{
  font-size:1.22rem;
  font-weight:800;
  letter-spacing:-0.01em;
  line-height:1.2;
}
.site-header .navbar-nav{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:clamp(14px,2.2vw,36px);
}
.site-header .nav-link{
  position:relative;
  display:inline-block;
  padding:0 0 8px !important;
  font-size:.9rem;
  font-weight:600;
  color:var(--ink);
  background:transparent;
  text-decoration:none;
  transition:color .25s var(--ease);
}
.site-header .nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-2px;
  width:24px;
  height:2px;
  background:var(--brand);
  opacity:0;
  transform:translateY(4px);
  transition:opacity .25s var(--ease),transform .25s var(--ease);
}
.site-header .nav-link:hover{color:#000;}
.site-header .nav-link.active::after,
.site-header .nav-link:hover::after{
  opacity:1;
  transform:translateY(0);
}
.nav-extra{
  margin-left:18px;
  flex-shrink:0;
}
.btn-entry{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:44px;
  padding:0 18px;
  background:var(--brand);
  color:var(--ink);
  border-radius:var(--radius);
  font-size:.9rem;
  font-weight:700;
  line-height:1;
  border:1px solid transparent;
  transition:background .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-entry svg{
  transition:transform .22s var(--ease);
}
.btn-entry:hover{
  background:var(--brand-hover);
  color:var(--ink);
  box-shadow:0 8px 20px rgba(206,255,77,.24);
}
.btn-entry:hover svg{
  transform:translateX(4px);
}
.menu-toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 0;
  background:transparent;
  border:0;
  font-size:.9rem;
  font-weight:700;
  color:var(--ink);
  box-shadow:none !important;
}
.hamburger{
  display:inline-flex;
  flex-direction:column;
  justify-content:space-between;
  width:22px;
  height:14px;
}
.hamburger i{
  display:block;
  width:100%;
  height:2px;
  background:var(--ink);
}

.btn-primary-page{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:48px;
  padding:0 24px;
  background:var(--brand);
  border-radius:var(--radius);
  color:var(--ink);
  font-weight:800;
  border:1px solid var(--brand);
  transition:background .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.btn-primary-page svg{transition:transform .24s var(--ease);}
.btn-primary-page:hover{
  background:var(--brand-hover);
  color:var(--ink);
  box-shadow:0 12px 26px rgba(206,255,77,.24);
}
.btn-primary-page:hover svg{transform:translateX(5px);}

.btn-secondary-page{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 24px;
  background:transparent;
  border:1px solid rgba(23,25,26,.28);
  border-radius:var(--radius);
  color:var(--ink);
  font-weight:700;
  transition:border-color .2s,background .2s;
}
.btn-secondary-page:hover{
  background:#EDE9E1;
  border-color:var(--ink);
  color:var(--ink);
}

.btn-light-outline{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 24px;
  background:transparent;
  border:1px solid rgba(255,255,255,.6);
  border-radius:var(--radius);
  color:var(--light-text);
  font-weight:700;
  transition:background .22s,border-color .22s;
}
.btn-light-outline:hover{
  background:rgba(255,255,255,.08);
  border-color:#fff;
  color:#fff;
}

.section{
  padding:clamp(4.5rem,9vw,6.5rem) 0;
}
.section-line{
  border-bottom:1px solid var(--line);
}
.section-dark{
  background:var(--dark);
  color:var(--light-text);
}
.section-pale{
  background:var(--page-2);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:.78rem;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--ink-2);
}
.eyebrow::before{
  content:"";
  width:20px;
  height:2px;
  background:var(--coral);
}
.section-dark .eyebrow{color:#B8B5AA;}
.section-title{
  margin-top:.8rem;
  margin-bottom:0;
  font-size:clamp(1.8rem,3.2vw,2.6rem);
  font-weight:800;
  line-height:1.25;
  letter-spacing:-0.01em;
}
.section-dark .section-title{color:var(--light-text);}
.section-sub{
  margin-top:1rem;
  max-width:720px;
  color:var(--ink-2);
  font-size:1rem;
}
.section-dark .section-sub{color:#C8C5BC;}
.lead-muted{color:var(--ink-2);}
.lead-light{color:#C8C5BC;}

/* category hero */
.category-hero{
  position:relative;
  padding:clamp(4.2rem,8vw,6.5rem) 0;
  background-color:#141716;
  background-image:linear-gradient(105deg,rgba(18,20,20,.88) 26%,rgba(18,20,20,.46) 76%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  color:var(--light-text);
  border-bottom:1px solid var(--dark);
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#FFF1E8;
  font-size:.8rem;
  font-weight:700;
  letter-spacing:.12em;
}
.hero-eyebrow .dot{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--coral);
  box-shadow:0 0 0 5px rgba(255,107,69,.16);
}
.category-hero h1{
  margin:1.1rem 0 0;
  font-size:clamp(2.3rem,5vw,4.1rem);
  font-weight:900;
  line-height:1.14;
  letter-spacing:-0.02em;
  color:#fff;
}
.hero-lead{
  margin-top:1.2rem;
  max-width:650px;
  color:#E8E4DC;
  font-size:clamp(1rem,1.6vw,1.15rem);
  line-height:1.9;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:2.2rem;
}
.hero-note{
  margin-top:1.2rem;
  display:flex;
  align-items:center;
  gap:8px;
  color:#BFBCB2;
  font-size:.78rem;
}
.hero-note svg{flex-shrink:0;}

.hero-panel{
  margin-left:auto;
  max-width:420px;
  background:#1A1D1C;
  border:1px solid rgba(255,255,255,.1);
  border-radius:10px;
  padding:1.6rem 1.7rem 1.7rem;
}
.panel-title{
  font-size:1rem;
  font-weight:800;
  color:#fff;
  margin-bottom:1rem;
  display:flex;
  align-items:center;
  gap:8px;
}
.panel-title .tick{
  width:22px;
  height:3px;
  background:var(--brand);
}
.hero-panel-list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:1.2rem;
}
.hero-panel-list li{
  display:flex;
  gap:12px;
  font-size:.9rem;
  line-height:1.7;
  color:#E5E2DB;
}
.step-index{
  width:28px;
  height:28px;
  flex-shrink:0;
  border:1px solid rgba(206,255,77,.38);
  color:var(--brand);
  font-size:.76rem;
  font-weight:800;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  margin-top:1px;
}

/* guide cards */
.guide-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1.3rem;
}
.guide-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line-card);
  border-radius:8px;
  padding:1.5rem 1.5rem 1.3rem;
  height:100%;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),transform .25s var(--ease);
}
.guide-card::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .3s var(--ease);
}
.guide-card:hover{
  border-color:#D8D2C7;
  box-shadow:var(--shadow-card);
  transform:translateY(-2px);
}
.guide-card:hover::before{
  transform:scaleX(1);
}
.guide-icon{
  width:38px;
  height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--page-2);
  border-radius:9px;
  color:var(--ink);
  margin-bottom:1rem;
}
.guide-card h3{
  font-size:1.08rem;
  font-weight:800;
  letter-spacing:-0.01em;
  margin-bottom:.4rem;
}
.guide-card p{
  color:var(--ink-2);
  font-size:.86rem;
  line-height:1.7;
  margin-bottom:1rem;
}
.guide-card .guide-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:.8rem;
  font-weight:800;
  color:var(--ink);
  transition:gap .2s var(--ease);
}
.guide-card .guide-link:hover{color:#075E53;gap:10px;}

/* gift types split */
.gift-split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(2rem,5vw,4.5rem);
  align-items:center;
}
.visual-stack{
  position:relative;
}
.visual-stack .main-image{
  border-radius:12px;
  background:var(--page-2);
  overflow:hidden;
  border:1px solid #DED8CE;
  box-shadow:0 18px 44px rgba(0,0,0,.08);
}
.visual-stack .main-image img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.visual-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:1.2rem;
  padding:.48rem .9rem;
  background:var(--surface);
  border:1px solid var(--line-card);
  border-radius:999px;
  font-size:.8rem;
  font-weight:700;
  box-shadow:0 6px 18px rgba(0,0,0,.04);
}
.visual-badge i{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--coral);
}
.number-list{
  display:flex;
  flex-direction:column;
}
.number-item{
  display:grid;
  grid-template-columns:90px 1fr auto;
  gap:1.2rem;
  align-items:start;
  padding:1.5rem 0;
  border-bottom:1px solid var(--line);
}
.number-item:first-child{padding-top:0;}
.number-item:last-child{border-bottom:0;padding-bottom:0;}
.number-item .num{
  font-size:3rem;
  font-weight:900;
  line-height:1;
  color:rgba(23,25,26,.12);
  letter-spacing:-.04em;
}
.number-item h3{
  margin:.08rem 0 .45rem;
  font-size:1.2rem;
  font-weight:800;
}
.number-item p{
  margin-bottom:0;
  color:var(--ink-2);
  font-size:.9rem;
  line-height:1.75;
}
.tag{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:.15rem .7rem;
  border:1px solid #DCD6CC;
  border-radius:999px;
  font-size:.72rem;
  font-weight:800;
  letter-spacing:.04em;
  color:var(--ink-2);
  white-space:nowrap;
}
.tag-hot{
  border-color:rgba(255,107,69,.32);
  color:#D44B2A;
  background:rgba(255,107,69,.05);
}
.tag-live{
  border-color:rgba(23,25,26,.16);
  color:var(--ink);
}

/* dark steps */
.steps-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:clamp(1rem,3vw,2.2rem);
  margin-top:clamp(2rem,4vw,3.5rem);
  position:relative;
}
.steps-row::before{
  content:"";
  position:absolute;
  top:37px;
  left:6%;
  right:6%;
  height:1px;
  background:rgba(255,255,255,.18);
  pointer-events:none;
}
.step-card{
  position:relative;
  z-index:1;
  padding:0 1.5rem 0 0;
}
.step-icon{
  width:74px;
  height:74px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--dark);
  border:1px solid rgba(255,255,255,.22);
  border-radius:20px;
  color:var(--brand);
  box-shadow:0 0 0 10px #1A1C1B;
  margin-bottom:1.5rem;
}
.step-card h3{
  font-size:1.15rem;
  font-weight:800;
  color:#fff;
  margin:1rem 0 .35rem;
}
.step-card p{
  color:#BDBAB1;
  font-size:.88rem;
  line-height:1.7;
  margin:0;
}
.step-index-text{
  display:block;
  margin-bottom:1.5rem;
  font-size:.75rem;
  font-weight:800;
  letter-spacing:.16em;
  color:#F2F4EE;
}
.step-index-text b{
  color:var(--coral);
  font-weight:900;
}
/* scope area */
.scope-wrap{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(2.2rem,5vw,4rem);
  margin-top:clamp(2rem,4vw,3.5rem);
}
.scope-panel{
  background:var(--surface);
  border:1px solid var(--line-card);
  border-radius:8px;
  padding:1.8rem;
}
.scope-panel h3{
  display:flex;
  align-items:center;
  gap:7px;
  font-size:1.08rem;
  font-weight:800;
  margin-bottom:1rem;
}
.scope-panel h3::before{
  content:"";
  width:16px;
  height:2px;
  background:var(--brand);
}
.scope-panel ul{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:.72rem;
}
.scope-panel li{
  position:relative;
  padding-left:1.4rem;
  color:var(--ink-2);
  font-size:.9rem;
}
.scope-panel li::before{
  content:"";
  position:absolute;
  left:0;
  top:.62rem;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--brand);
}
.scope-panel li strong{
  color:var(--ink);
  font-weight:800;
}
.chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:.8rem;
  margin-top:clamp(2rem,4vw,3rem);
}
.chip-status{
  display:inline-flex;
  align-items:center;
  gap:10px;
  background:var(--surface);
  border:1px solid var(--line-card);
  border-radius:999px;
  padding:.48rem 1rem;
  font-size:.84rem;
  font-weight:700;
}
.chip-status i{
  width:8px;
  height:8px;
  border-radius:50%;
  background:#B9B4A8;
}
.chip-status .st-open{background:var(--brand);}
.chip-status .st-soon{background:#FFD59B;}
.chip-status .st-end{background:#C7C3B8;}
.chip-status .st-limit{background:var(--coral);}

/* security strip */
.security-strip{
  background:#171918;
  border:1px solid #2C302D;
  border-radius:10px;
  padding:clamp(1.4rem,3vw,2.4rem);
  color:#F0EDE6;
}
.security-strip .title{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:800;
  font-size:1.1rem;
  margin-bottom:1rem;
}
.security-strip .title svg{color:var(--coral);}
.security-cols{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1.6rem;
}
.security-cols .row-txt{
  position:relative;
  padding-left:1rem;
  margin-bottom:.65rem;
  color:#CBC9C1;
  font-size:.88rem;
  line-height:1.7;
}
.security-cols .row-txt::before{
  content:"";
  position:absolute;
  left:0;
  top:.58rem;
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--coral);
}

/* FAQ */
.faq-layout{
  display:grid;
  grid-template-columns:minmax(0,.85fr) minmax(0,1.35fr);
  gap:clamp(2rem,5vw,4.5rem);
  align-items:start;
}
.faq-list{
  border-top:1px solid var(--line);
}
.faq-item{
  border-bottom:1px solid var(--line);
  background:transparent;
}
.faq-question{
  display:flex;
  align-items:center;
  justify-content:space-between;
  width:100%;
  padding:1.3rem .2rem;
  background:transparent;
  border:0;
  text-align:left;
  font-size:1.02rem;
  font-weight:800;
  color:var(--ink);
  cursor:pointer;
  transition:color .2s;
}
.faq-question:hover{color:#075E53;}
.faq-question[aria-expanded="true"]{color:#000;}
.faq-icon{
  position:relative;
  width:18px;
  height:18px;
  flex-shrink:0;
  margin-left:16px;
}
.faq-icon i{
  position:absolute;
  left:0;
  top:8px;
  width:18px;
  height:2px;
  background:var(--ink);
}
.faq-icon i:last-child{
  transition:transform .25s;
  background:var(--ink);
}
.faq-question[aria-expanded="true"] .faq-icon i:last-child{
  transform:rotate(90deg);
}
.faq-answer{
  padding:0 .2rem 1.3rem;
  color:var(--ink-2);
  font-size:.92rem;
  line-height:1.85;
  max-width:680px;
}

/* final CTA */
.cta-panel{
  background:var(--dark);
  border-radius:16px;
  padding:clamp(2.8rem,6vw,5.5rem) clamp(1.5rem,5vw,4rem);
  color:var(--light-text);
  text-align:center;
  position:relative;
  overflow:hidden;
}
.cta-panel::before{
  content:"";
  position:absolute;
  width:260px;
  height:260px;
  background:radial-gradient(circle,rgba(206,255,77,.18),transparent 60%);
  top:-120px;
  right:-70px;
  pointer-events:none;
}
.cta-panel h2{
  position:relative;
  font-size:clamp(1.8rem,3.4vw,2.8rem);
  font-weight:900;
  letter-spacing:-.01em;
  margin:0 auto 1rem;
  max-width:700px;
}
.cta-panel p{
  position:relative;
  color:#B9B6AC;
  max-width:600px;
  margin:0 auto 2.2rem;
}
.cta-buttons{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:center;
}
/* footer */
.site-footer{
  background:var(--dark);
  color:#C9C6BE;
  padding:clamp(3rem,6vw,5rem) 0 1.6rem;
}
.footer-row{
  row-gap:2.2rem;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#F7F4EE;
  font-size:1.15rem;
  font-weight:800;
  margin-bottom:.8rem;
}
.footer-desc{
  max-width:360px;
  color:#9D9A93;
  font-size:.82rem;
  line-height:1.85;
  margin-bottom:0;
}
.site-footer h3{
  font-size:.82rem;
  font-weight:800;
  margin-bottom:1rem;
  color:rgba(247,244,238,.45);
  letter-spacing:.1em;
}
.footer-links{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:.35rem;
}
.footer-links a{
  color:#C9C6BE;
  font-size:.8rem;
  line-height:1.9;
  transition:color .2s;
}
.footer-links a:hover{
  color:var(--brand);
}
.footer-note{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:8px;
  padding:1rem 1.1rem;
  color:#9D9A93;
  font-size:.78rem;
  line-height:1.8;
}
.footer-bottom{
  margin-top:3.2rem;
  padding-top:1.2rem;
  border-top:1px solid rgba(255,255,255,.09);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.5rem;
  color:#8A877E;
  font-size:.78rem;
}
.site-domain{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace,serif;
  letter-spacing:.02em;
}

@media (max-width: 991.98px) {
  .site-header .navbar{
    min-height:68px;
  }
  .navbar-collapse{
    background:#fff;
    border:1px solid var(--line);
    border-radius:10px;
    margin-top:12px;
    padding:1rem 1.2rem 1.3rem;
    box-shadow:0 22px 55px rgba(0,0,0,.1);
  }
  .navbar-nav{
    width:100%;
    margin-left:0 !important;
    flex-direction:column;
    gap:4px !important;
  }
  .site-header .nav-link{
    display:block;
    width:100%;
    padding:1rem 0 !important;
    border-bottom:1px solid #F0ECE3;
    font-size:1rem;
  }
  .site-header .nav-link::after{
    display:none;
  }
  .nav-extra{
    width:100%;
    margin:1.1rem 0 0;
  }
  .btn-entry{
    width:100%;
    justify-content:center;
  }
  .category-hero{
    padding:4rem 0;
  }
  .hero-panel{
    margin:2.4rem 0 0;
    max-width:100%;
  }
  .guide-grid{
    grid-template-columns:1fr 1fr;
  }
  .gift-split{
    grid-template-columns:1fr;
  }
  .number-item{
    grid-template-columns:70px 1fr auto;
  }
  .steps-row{
    grid-template-columns:1fr 1fr;
    gap:2.2rem 1.2rem;
  }
  .steps-row::before{
    display:none;
  }
  .step-card{
    padding:0;
  }
  .scope-wrap{
    grid-template-columns:1fr;
  }
  .faq-layout{
    grid-template-columns:1fr;
  }
  .security-cols{
    grid-template-columns:1fr;
    gap:.6rem;
  }
  .footer-bottom{
    flex-direction:column;
    align-items:flex-start;
  }
}
@media (max-width: 575.98px) {
  body{
    font-size:15px;
  }
  .category-hero{
    padding:3rem 0;
  }
  .category-hero h1{
    font-size:2.1rem;
  }
  .guide-grid{
    grid-template-columns:1fr;
  }
  .steps-row{
    grid-template-columns:1fr;
  }
  .gift-split{
    gap:2rem;
  }
  .number-item{
    grid-template-columns:1fr;
    gap:.8rem;
    padding:1.4rem 0;
  }
  .number-item .num{
    font-size:2.1rem;
  }
  .hero-actions,.cta-buttons{
    flex-direction:column;
    align-items:stretch;
  }
  .hero-actions .btn-primary-page,
  .hero-actions .btn-secondary-page,
  .cta-buttons .btn-primary-page,
  .cta-buttons .btn-light-outline{
    width:100%;
  }
  .chip-row{
    gap:.65rem;
  }
  .scope-panel{
    padding:1.4rem 1.1rem;
  }
  .security-strip{
    padding:1.4rem 1.1rem;
  }
  .faq-question{
    padding-left:0;
    padding-right:0;
    font-size:.95rem;
  }
  .footer-bottom{
    align-items:center;
    text-align:center;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after{
    animation-duration:0.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:0.01ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category3 */
:root{
    --paper:#F7F4EE;
    --paper-deep:#EDE9E1;
    --card:#FFFFFF;
    --ink:#17191A;
    --muted:#6A6A64;
    --line:#E4DFD6;
    --dark:#121414;
    --dark-soft:#1C1F1F;
    --green:#CEFF4D;
    --green-hover:#E7FF8A;
    --coral:#FF6B45;
    --radius-card:4px;
    --radius-btn:6px;
    --shadow-card:0 2px 10px rgba(0,0,0,0.04);
    --shadow-hover:0 12px 30px rgba(0,0,0,0.08);
}
html,body{
    box-sizing:border-box;
}
*,*::before,*::after{
    box-sizing:inherit;
}
body{
    margin:0;
    font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    background:var(--paper);
    color:var(--ink);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
}
a{
    color:inherit;
    text-decoration:none;
    transition:color .2s ease;
}
a:hover{
    color:#1F4A3A;
}
img{
    max-width:100%;
    display:block;
}
button,input,textarea{
    font-family:inherit;
}
ul,ol,dl,dd{
    margin:0;
    padding:0;
}
.container, .container-lg, .container-md, .container-sm{
    max-width:1200px;
}
.site-header{
    background:rgba(247,244,238,.92);
    border-bottom:1px solid var(--line);
    position:sticky;
    top:0;
    z-index:1030;
    backdrop-filter:blur(8px);
}
.site-header .navbar{
    min-height:80px;
    padding:0;
}
.brand{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-weight:800;
    font-size:19px;
    color:var(--ink);
    letter-spacing:-.01em;
}
.brand:hover{
    color:var(--ink);
}
.brand-logo{
    width:34px;
    height:34px;
    flex:none;
}
.brand-logo svg{
    display:block;
}
.navbar-nav{
    margin-left:auto;
    align-items:center;
    gap:6px;
}
.nav-link{
    position:relative;
    font-size:15px;
    font-weight:600;
    color:#3B3D3A;
    padding:10px 14px !important;
    line-height:1.4;
}
.nav-link:hover,
.nav-link:focus{
    color:var(--ink);
}
.nav-link::after{
    content:"";
    position:absolute;
    left:14px;
    right:100%;
    bottom:2px;
    height:2px;
    background:var(--green);
    transition:right .25s ease,left .25s ease;
}
.nav-link:hover::after{
    left:14px;
    right:14px;
}
.nav-link.active{
    color:var(--ink);
}
.nav-link.active::after{
    right:14px;
    background:var(--green);
}
.nav-extra{
    margin-left:18px;
    flex:none;
}
.btn-entry{
    display:inline-flex;
    align-items:center;
    gap:8px;
    background:var(--green);
    color:var(--ink);
    border:1px solid transparent;
    font-size:15px;
    font-weight:700;
    line-height:1;
    border-radius:var(--radius-btn);
    padding:12px 20px;
    transition:background .2s ease,color .2s ease,transform .2s ease,border-color .2s ease;
}
.btn-entry:hover{
    background:var(--green-hover);
    color:var(--ink);
    transform:translateX(2px);
}
.btn-entry svg{
    transition:transform .25s ease;
}
.btn-entry:hover svg{
    transform:translateX(3px);
}
.menu-toggle{
    border:1px solid var(--line);
    background:var(--card);
    border-radius:6px;
    display:flex;
    align-items:center;
    gap:8px;
    font-size:14px;
    color:var(--ink);
    padding:8px 12px;
}
.menu-toggle:focus{
    box-shadow:0 0 0 4px rgba(206,255,77,.3);
}
.menu-toggle span:first-child{
    font-weight:600;
}
.hamburger{
    width:18px;
    height:14px;
    position:relative;
    display:inline-block;
}
.hamburger i{
    position:absolute;
    left:0;
    width:18px;
    height:2px;
    background:var(--ink);
    border-radius:2px;
    transition:opacity .2s ease,transform .2s ease;
}
.hamburger i:nth-child(1){
    top:0;
}
.hamburger i:nth-child(2){
    top:6px;
}
.hamburger i:nth-child(3){
    top:12px;
}
.category-hero{
    background:linear-gradient(to bottom,rgba(247,244,238,.97),rgba(237,233,225,.96)),url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
    background-color:#EDE9E1;
    padding:clamp(3.5rem,7vw,6rem) 0 clamp(3rem,6vw,5rem);
    border-bottom:1px solid var(--line);
}
.breadcrumb-path{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    list-style:none;
    gap:6px;
    font-size:13px;
    color:var(--muted);
    margin-bottom:26px;
}
.breadcrumb-path a{
    color:var(--muted);
    transition:color .2s ease;
}
.breadcrumb-path a:hover{
    color:var(--ink);
}
.breadcrumb-path li+li::before{
    content:"/";
    margin-right:6px;
    color:var(--line);
}
.breadcrumb-path li:last-child{
    color:var(--ink);
    font-weight:600;
}
.hero-kicker{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    font-weight:700;
    letter-spacing:.08em;
    color:var(--ink);
    background:var(--green);
    border-radius:999px;
    padding:4px 12px;
    margin-bottom:18px;
}
.hero-kicker::before{
    content:"";
    width:6px;
    height:6px;
    border-radius:50%;
    background:var(--ink);
}
.page-title{
    font-size:clamp(2.2rem,4.6vw,3.6rem);
    font-weight:900;
    letter-spacing:-.015em;
    line-height:1.12;
    margin:0 0 18px;
    max-width:720px;
}
.hero-desc{
    font-size:17px;
    line-height:1.9;
    color:#4D4F49;
    max-width:620px;
    margin-bottom:24px;
}
.hero-meta{
    display:flex;
    flex-wrap:wrap;
    gap:14px 20px;
    align-items:center;
    margin-top:26px;
}
.hero-tag{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:13px;
    font-weight:600;
    color:var(--ink);
    background:rgba(255,255,255,.7);
    border:1px solid var(--line);
    border-radius:999px;
    padding:4px 12px;
}
.hero-visual{
    position:relative;
}
.hero-visual .img-frame{
    position:relative;
    border-radius:8px;
    overflow:hidden;
    background:var(--card);
    border:1px solid var(--line);
    box-shadow:var(--shadow-hover);
}
.hero-visual .img-frame img{
    width:100%;
    height:100%;
    object-fit:cover;
    min-height:280px;
    max-height:360px;
}
.hero-float-note{
    position:absolute;
    right:-10px;
    bottom:22px;
    background:var(--dark);
    color:var(--paper);
    border-radius:8px;
    padding:10px 14px;
    font-size:13px;
    font-weight:600;
    letter-spacing:.02em;
    box-shadow:0 6px 20px rgba(0,0,0,.2);
}
.hero-float-note svg{
    vertical-align:-2px;
    margin-right:6px;
}
.section-block{
    padding-top:clamp(4.5rem,8vw,7rem);
    padding-bottom:clamp(4.5rem,8vw,7rem);
    border-bottom:1px solid var(--line);
}
.section-head{
    display:flex;
    align-items:flex-start;
    margin-bottom:2.8rem;
}
.section-index{
    font-size:56px;
    line-height:1;
    font-weight:900;
    color:rgba(206,255,77,.9);
    letter-spacing:-.04em;
    width:84px;
    flex:none;
    -webkit-text-stroke:1px rgba(255,255,255,.15);
}
@media(min-width:992px){
    .section-index{
        width:120px;
        font-size:80px;
        -webkit-text-stroke:0;
    }
}
.section-title-wrap{
    padding-top:8px;
}
.section-eyebrow{
    font-size:13px;
    font-weight:700;
    letter-spacing:.05em;
    color:#4A4C47;
    text-transform:uppercase;
    display:inline-flex;
    align-items:center;
    gap:10px;
    margin-bottom:6px;
}
.section-eyebrow::before{
    content:"";
    width:30px;
    height:2px;
    background:var(--green);
    display:inline-block;
}
.section-title{
    font-size:clamp(1.7rem,2.6vw,2.2rem);
    font-weight:800;
    line-height:1.3;
    letter-spacing:-.01em;
    margin:0;
}
.section-sub{
    color:var(--muted);
    max-width:680px;
    font-size:15px;
    margin-top:10px;
}
.feature-split{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:36px;
}
.feature-list{
    list-style:none;
    margin-top:24px;
}
.feature-list li{
    display:flex;
    align-items:flex-start;
    gap:14px;
    padding:16px 0;
    border-bottom:1px solid var(--line);
    position:relative;
}
.feature-list li:last-child{
    border-bottom:none;
}
.feature-list .f-dot{
    width:8px;
    height:8px;
    border-radius:50%;
    background:var(--coral);
    flex:none;
    margin-top:14px;
}
.feature-list h3{
    font-size:16px;
    font-weight:800;
    margin:0 0 5px;
}
.feature-list p{
    font-size:15px;
    line-height:1.8;
    color:var(--muted);
    margin:0;
}
.info-photo-box{
    background:var(--dark);
    border-radius:8px;
    overflow:hidden;
    position:relative;
    box-shadow:0 18px 40px rgba(0,0,0,.12);
}
.info-photo-box img{
    width:100%;
    height:100%;
    object-fit:cover;
    min-height:260px;
}
.info-photo-note{
    position:absolute;
    left:14px;
    bottom:14px;
    background:rgba(18,20,20,.78);
    color:#FFFFFF;
    font-size:13px;
    line-height:1.5;
    border-radius:6px;
    padding:8px 12px;
    max-width:80%;
}
.card-group-reset{
    margin:0;
    padding:0;
}
.group-card{
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:24px 20px;
    height:100%;
    transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
    position:relative;
}
.group-card::before{
    content:"";
    position:absolute;
    top:0;
    left:20px;
    right:20px;
    height:2px;
    background:var(--green);
    opacity:0;
    transition:opacity .2s ease;
}
.group-card:hover{
    box-shadow:var(--shadow-hover);
    transform:translateY(-2px);
    border-color:#D8D2C8;
}
.group-card:hover::before{
    opacity:1;
}
.group-card .card-icon{
    width:40px;
    height:40px;
    border-radius:6px;
    display:flex;
    align-items:center;
    justify-content:center;
    background:var(--ink);
    margin-bottom:14px;
}
.group-card .card-icon svg{
    display:block;
}
.group-card h3{
    font-size:18px;
    font-weight:800;
    margin-bottom:8px;
    letter-spacing:-.01em;
}
.group-card p{
    font-size:14px;
    color:var(--muted);
    margin:0;
    line-height:1.75;
}
.group-card .link-more{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:13px;
    font-weight:700;
    margin-top:14px;
    color:#2C5C45;
}
.group-card .link-more svg{
    transition:transform .2s ease;
}
.group-card:hover .link-more svg{
    transform:translateX(3px);
}
.process-band{
    background:var(--dark);
    color:var(--paper);
    padding:clamp(4.5rem,8vw,6.5rem) 0;
    border-bottom:1px solid var(--line);
}
.process-band .section-title,
.process-band .section-sub{
    color:var(--paper);
}
.process-band .section-eyebrow::before{
    background:var(--green);
}
.process-band .section-eyebrow{
    color:#B9BCB7;
}
.process-list{
    display:flex;
    flex-wrap:wrap;
    gap:24px;
    margin-top:36px;
}
.process-item{
    flex:1 1 220px;
    border:1px solid rgba(247,244,238,.16);
    border-radius:8px;
    padding:28px 22px;
    background:rgba(255,255,255,.02);
}
.process-number{
    font-size:26px;
    font-weight:800;
    color:var(--green);
    letter-spacing:-.01em;
    margin-bottom:12px;
    line-height:1;
}
.process-item h3{
    color:#FFFFFF;
    font-size:17px;
    font-weight:700;
    margin-bottom:10px;
}
.process-item p{
    color:#C9CCC8;
    font-size:14px;
    line-height:1.8;
    margin:0;
}
.note-block{
    background:var(--paper-deep);
    border:1px solid var(--line);
    border-radius:8px;
    padding:26px 24px;
    margin-top:20px;
    display:flex;
    gap:18px;
    align-items:flex-start;
}
@media(max-width:575.98px){
    .note-block{
        flex-direction:column;
    }
}
.note-icon{
    width:42px;
    height:42px;
    flex:none;
    display:flex;
    align-items:center;
    justify-content:center;
    background:var(--ink);
    color:var(--green);
    border-radius:8px;
}
.note-icon svg{
    display:block;
}
.note-block h4{
    font-weight:800;
    margin-bottom:4px;
    font-size:17px;
}
.note-block p{
    margin:0;
    font-size:14px;
    color:var(--muted);
}
.compare-wrap{
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    overflow:hidden;
    background:var(--card);
}
.compare-head, .compare-row{
    display:flex;
    flex-wrap:wrap;
}
.compare-head{
    background:var(--ink);
    color:#FFFFFF;
}
.compare-head > div{
    padding:12px 18px;
    font-size:14px;
    font-weight:700;
}
.compare-row > div{
    padding:15px 18px;
    font-size:14px;
    color:var(--muted);
}
.compare-row{
    border-top:1px solid var(--line);
}
.compare-c1{
    flex:0 0 170px;
}
.compare-c2{
    flex:1 1 260px;
}
@media(max-width:767.98px){
    .compare-head, .compare-row{
        flex-direction:column;
    }
    .compare-head > div,.compare-row > div{
        border-bottom:1px solid rgba(255,255,255,.1);
    }
    .compare-row > div{
        border-bottom:1px solid var(--line);
        border-right:none;
    }
}
.compare-c2{
    color:var(--ink);
}
.alert-chip{
    display:inline-block;
    background:rgba(255,107,69,.1);
    color:#B23D21;
    border-radius:999px;
    font-size:12px;
    padding:2px 10px;
    font-weight:700;
    margin-left:6px;
}
.faq-section{
    background:var(--paper);
}
.faq-layout{
    display:flex;
    flex-wrap:wrap;
}
.faq-intro{
    flex:0 0 360px;
    padding-right:50px;
}
.faq-intro .big-quote{
    font-size:17px;
    font-weight:600;
    line-height:1.9;
    margin-top:24px;
    color:#3E403B;
}
.faq-list{
    flex:1 1 600px;
    border-top:1px solid var(--line);
}
.faq-item{
    border-bottom:1px solid var(--line);
    background:transparent;
}
.faq-item summary{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    cursor:pointer;
    list-style:none;
    padding:20px 6px 20px 0;
    color:var(--ink);
    font-size:16px;
    font-weight:700;
    transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{
    display:none;
}
.faq-item summary:hover{
    color:#2C5C45;
}
.faq-icon{
    position:relative;
    width:22px;
    height:22px;
    flex:none;
    border:1px solid var(--line);
    border-radius:50%;
    background:rgba(255,255,255,.8);
}
.faq-icon::before,
.faq-icon::after{
    content:"";
    position:absolute;
    background:var(--muted);
    top:50%;
    left:50%;
    transform:translate(-50%,-50%);
    border-radius:2px;
    transition:background .2s ease;
}
.faq-icon::before{
    width:9px;
    height:1.6px;
}
.faq-icon::after{
    width:1.6px;
    height:9px;
    transition:opacity .2s ease,transform .2s ease;
}
.faq-item[open] .faq-icon::before,
.faq-item[open] .faq-icon::after{
    background:var(--ink);
    transform:translate(-50%,-50%) rotate(45deg);
}
.faq-answer{
    padding:0 26px 20px 0;
    color:var(--muted);
    font-size:14px;
    line-height:1.85;
}
.faq-answer a{
    color:#2C5C45;
    font-weight:600;
}
.cta-band{
    background:var(--dark);
    color:var(--paper);
    padding:clamp(4rem,7vw,6rem) 0;
    border-bottom:1px solid var(--line);
}
.cta-inner{
    text-align:center;
    max-width:680px;
    margin:0 auto;
}
.cta-inner h2{
    font-size:clamp(1.8rem,3vw,2.6rem);
    font-weight:800;
    color:#FFFFFF;
    letter-spacing:-.01em;
    margin-bottom:14px;
}
.cta-inner p{
    color:#C9CCC8;
    font-size:15px;
    line-height:1.8;
    margin-bottom:30px;
}
.cta-inner .btn-entry{
    background:var(--green);
    color:var(--ink);
    font-size:16px;
    padding:14px 28px;
}
.site-footer{
    background:var(--dark);
    color:#C9CCC8;
    font-size:13px;
    padding:64px 0 0;
}
.site-footer .footer-row{
    padding-bottom:34px;
}
.site-footer h3{
    color:#FFFFFF;
    font-size:15px;
    font-weight:700;
    margin-bottom:16px;
}
.footer-brand{
    display:flex;
    align-items:center;
    gap:10px;
    color:#FFFFFF;
    font-size:20px;
    font-weight:800;
    margin-bottom:12px;
}
.footer-brand svg{
    display:block;
}
.footer-desc{
    color:#A2A5A0;
    line-height:1.9;
    margin:0 0 24px;
    max-width:320px;
}
.footer-links{
    list-style:none;
    padding:0;
    margin:0;
}
.footer-links li{
    margin-bottom:8px;
}
.footer-links a{
    color:#C9CCC8;
    font-size:13px;
    transition:color .2s ease,background .2s ease;
    padding:3px 0;
}
.footer-links a:hover{
    color:var(--green);
}
.footer-note{
    border:1px solid rgba(247,244,238,.12);
    border-radius:6px;
    background:rgba(255,255,255,.02);
    padding:14px 16px;
    line-height:1.9;
    color:#B9BCB7;
}
.footer-bottom{
    border-top:1px solid rgba(247,244,238,.15);
    padding:20px 0 22px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:10px;
    flex-wrap:wrap;
    font-size:13px;
    color:#9A9E98;
}
.site-domain{
    letter-spacing:.05em;
}
@media(max-width:991.98px){
    .site-header .navbar-collapse{
        background:var(--card);
        border:1px solid var(--line);
        border-radius:10px;
        box-shadow:var(--shadow-hover);
        margin:12px auto;
        padding:18px 16px;
    }
    .site-header .navbar-nav{
        margin:0;
        gap:0;
        align-items:stretch;
    }
    .site-header .nav-link{
        border-radius:6px;
        margin-bottom:4px;
        border-bottom:1px solid var(--line);
        padding:14px 10px !important;
    }
    .site-header .nav-link:hover,
    .site-header .nav-link.active{
        background:var(--paper-deep);
    }
    .site-header .nav-link::after{
        display:none;
    }
    .nav-extra{
        margin:16px 0 0;
    }
    .nav-extra .btn-entry{
        width:100%;
        justify-content:center;
    }
}
@media(max-width:767.98px){
    .hero-visual{
        margin-top:34px;
    }
    .section-head{
        flex-direction:column;
        gap:10px;
    }
    .section-index{
        font-size:44px;
    }
    .compare-c1{
        background:rgba(23,25,26,.04);
        font-weight:700;
        color:var(--ink);
    }
    .faq-intro{
        flex:1 1 100%;
        padding-right:0;
    }
}
.visually-hidden{
    position:absolute;
    width:1px;
    height:1px;
    margin:-1px;
    padding:0;
    overflow:hidden;
    clip:rect(0 0 0 0);
    border:0;
}
@media(prefers-reduced-motion:reduce){
    *{
        animation-duration:.01ms !important;
        transition-duration:.01ms !important;
        scroll-behavior:auto !important;
    }
}
.link-back-row{
    padding:24px 0 0;
    text-align:center;
    border-bottom:1px solid var(--line);
}
.link-back-row a{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-weight:600;
    font-size:14px;
    padding:12px 0;
    color:#4A4C47;
}
.link-back-row a:hover{
    color:#2C5C45;
}
.link-back-row svg{
    transition:transform .2s ease;
}
.link-back-row a:hover svg{
    transform:translateX(-3px);
}
.module-gap{
    padding:clamp(3.5rem,6vw,5rem) 0;
}

/* roulang page: category4 */
:root{
  --page-bg:#F7F4EE;
  --surface:#FFFFFF;
  --surface-deep:#EDE9E1;
  --ink:#17191A;
  --muted:#6A6A64;
  --muted-2:#98938A;
  --line:#E4DFD6;
  --line-deep:#E7E2DA;
  --dark:#121414;
  --dark-2:#1C1E1F;
  --dark-text:#F7F4EE;
  --accent:#CEFF4D;
  --accent-hover:#E7FF8A;
  --coral:#FF6B45;
  --radius:4px;
  --radius-sm:6px;
  --font-stack:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,
*::before,
*::after{
  box-sizing:border-box;
}
html{
  scroll-behavior:smooth;
}
body{
  margin:0;
  background:var(--page-bg);
  color:var(--ink);
  font-family:var(--font-stack);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
img{
  max-width:100%;
  height:auto;
  display:block;
}
a{
  color:inherit;
  text-decoration:none;
  transition:color .2s ease, background-color .2s ease;
}
a:hover{
  color:inherit;
}
h1,h2,h3,h4,h5,h6{
  margin:0 0 .6em;
  line-height:1.3;
  color:var(--ink);
  font-weight:800;
}
p{
  margin:0 0 1rem;
}
button,input{
  font-family:inherit;
}
.btn-entry:focus-visible,
.btn-line:focus-visible,
.nav-link:focus-visible,
.brand:focus-visible,
a:focus-visible{
  outline:3px solid rgba(206,255,77,.8);
  outline-offset:2px;
  border-radius:4px;
}
.container{
  max-width:1200px;
}

/* header nav */
.site-header{
  background:var(--surface);
  border-bottom:1px solid var(--line);
  position:relative;
  z-index:100;
}
.site-header .navbar{
  padding:0;
}
.site-header .container{
  position:relative;
  min-height:80px;
  display:flex;
  align-items:center;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:.8rem;
  flex-shrink:0;
  color:var(--ink);
}
.brand:hover{
  color:var(--ink);
}
.brand-text{
  font-size:1.2rem;
  font-weight:900;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.menu-toggle{
  display:none;
  align-items:center;
  gap:.5rem;
  padding:.45rem .7rem;
  margin-left:auto;
  background:transparent;
  color:var(--ink);
  font-size:14px;
  font-weight:600;
  border:1px solid var(--line);
  border-radius:6px;
  line-height:1;
}
.hamburger{
  display:flex;
  flex-direction:column;
  gap:4px;
  width:18px;
}
.hamburger i{
  display:block;
  height:2px;
  background:var(--ink);
  border-radius:2px;
}
@media (min-width:992px){
  .site-header .navbar-collapse{
    flex:1;
    justify-content:center;
    align-items:center;
  }
  .navbar-nav{
    display:flex;
    align-items:center;
    margin:0;
    gap:2.1rem;
  }
  .nav-item{
    position:relative;
  }
  .nav-link{
    position:relative;
    display:block;
    padding:28px 2px 22px;
    font-size:15px;
    font-weight:600;
    color:var(--ink);
    line-height:1;
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:50%;
    bottom:18px;
    width:0;
    height:2px;
    border-radius:2px;
    background:var(--accent);
    transform:translateX(-50%);
    transition:width .22s ease;
  }
  .nav-link:hover::after,
  .nav-link.active::after{
    width:24px;
  }
  .nav-extra{
    position:absolute;
    right:0;
    top:50%;
    transform:translateY(-50%);
  }
}
@media (max-width:991.98px){
  .site-header .container{
    min-height:72px;
    flex-wrap:wrap;
  }
  .menu-toggle{
    display:inline-flex;
  }
  .navbar-collapse{
    position:absolute;
    left:12px;
    right:12px;
    top:100%;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:10px;
    padding:1rem 1.1rem 1.2rem;
    box-shadow:0 16px 34px rgba(20,20,18,.1);
  }
  .navbar-nav{
    margin:0;
    padding:0;
  }
  .nav-item{
    border-bottom:1px solid #F1EEE7;
  }
  .nav-item:last-child{
    border-bottom:0;
  }
  .nav-link{
    display:block;
    padding:.9rem .25rem;
    font-weight:600;
    font-size:15px;
  }
  .nav-link::after{
    display:none;
  }
  .nav-extra{
    margin-top:1rem;
    padding-top:1rem;
    border-top:1px solid var(--line);
  }
  .nav-extra .btn-entry{
    width:100%;
  }
}

/* buttons and common */
.btn-entry,
.btn-line{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.65rem;
  height:48px;
  padding:0 24px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:700;
  white-space:nowrap;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease;
}
.btn-entry{
  background:var(--accent);
  color:var(--ink);
  border:1px solid var(--accent);
}
.btn-entry:hover{
  background:var(--accent-hover);
  border-color:var(--accent-hover);
  color:var(--ink);
}
.btn-entry svg{
  transition:transform .22s ease;
}
.btn-entry:hover svg{
  transform:translateX(4px);
}
.btn-line{
  background:transparent;
  color:var(--ink);
  border:1px solid #C9C2B6;
}
.btn-line:hover{
  background:#F0EDE6;
  border-color:var(--ink);
  color:var(--ink);
}
.btn-line-light{
  background:transparent;
  color:#F7F4EE;
  border:1px solid rgba(247,244,238,.62);
}
.btn-line-light:hover{
  background:rgba(247,244,238,.12);
  border-color:#F7F4EE;
  color:#F7F4EE;
}
.section{
  padding:clamp(4rem,8vw,6.2rem) 0;
}
.section-flat{
  padding-top:0;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
  font-size:13px;
  font-weight:800;
  letter-spacing:.1em;
  color:var(--ink);
}
.eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  background:var(--accent);
  border-radius:2px;
}
.section-head{
  max-width:760px;
  margin-bottom:2.4rem;
}
h2.section-title{
  font-size:clamp(1.8rem,3.2vw,2.55rem);
  font-weight:800;
  line-height:1.22;
  letter-spacing:-.01em;
  margin-bottom:.55rem;
}
.section-sub{
  color:var(--muted);
  font-size:1rem;
  line-height:1.85;
}
.fs-note{
  font-size:13px;
  color:var(--muted-2);
}

/* hero category */
.category-hero{
  position:relative;
  background-color:#1d1f1e;
  background-image:linear-gradient(180deg, rgba(18,20,20,.84), rgba(18,20,20,.76)), url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  color:var(--dark-text);
  padding:clamp(3.2rem,7vw,5.2rem) 0;
  overflow:hidden;
}
.category-hero::after{
  content:"";
  position:absolute;
  right:-120px;
  bottom:-160px;
  width:340px;
  height:340px;
  border-radius:50%;
  border:70px solid rgba(206,255,77,.08);
  pointer-events:none;
}
.category-hero .container{
  position:relative;
  z-index:2;
}
.breadcrumb-cat{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.4rem .65rem;
  margin-bottom:1.8rem;
  font-size:13px;
  color:#BAB5AD;
}
.breadcrumb-cat a{
  color:#DCD8CF;
}
.breadcrumb-cat a:hover{
  color:var(--accent);
}
.hero-kicker{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  background:rgba(206,255,77,.16);
  color:var(--accent);
  border:1px solid rgba(206,255,77,.32);
  border-radius:999px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.06em;
  padding:.3rem .75rem;
  margin-bottom:1.1rem;
}
.category-hero h1{
  color:#fff;
  font-size:clamp(2.3rem,5vw,4rem);
  font-weight:900;
  line-height:1.14;
  letter-spacing:-.01em;
  max-width:820px;
  margin-bottom:1rem;
}
.hero-lead{
  font-size:clamp(1rem,1.6vw,1.15rem);
  line-height:1.9;
  color:#D8D4CB;
  max-width:760px;
  margin-bottom:1.6rem;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:.55rem;
  margin-bottom:2rem;
}
.hero-tags span{
  display:inline-flex;
  align-items:center;
  border:1px solid rgba(255,255,255,.22);
  border-radius:999px;
  background:rgba(255,255,255,.07);
  color:#E6E2D9;
  font-size:12.5px;
  padding:.25rem .7rem;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:.8rem;
}
@keyframes heroRise{
  from{opacity:0; transform:translateY(14px);}
  to{opacity:1; transform:translateY(0);}
}
.category-hero .hero-kicker,
.category-hero h1,
.category-hero .hero-lead,
.category-hero .hero-tags,
.category-hero .hero-actions{
  animation:heroRise .5s ease both;
}
.category-hero h1{animation-delay:.04s}
.category-hero .hero-lead{animation-delay:.12s}
.category-hero .hero-tags{animation-delay:.2s}
.category-hero .hero-actions{animation-delay:.28s}

/* portal cards */
.portal-card{
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:6px;
  padding:1.7rem 1.4rem 1.5rem;
  position:relative;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .25s ease,transform .2s ease;
}
.portal-card::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:100%;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s ease;
}
.portal-card:hover{
  border-color:#C3BCAF;
  box-shadow:0 14px 30px rgba(20,20,18,.08);
  transform:translateY(-2px);
}
.portal-card:hover::before{
  transform:scaleX(1);
}
.portal-icon{
  width:48px;
  height:48px;
  border-radius:4px;
  background:#F1EDE4;
  color:var(--ink);
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:1.1rem;
}
.portal-card h3{
  font-size:1.18rem;
  font-weight:800;
  margin-bottom:.4rem;
  letter-spacing:-.01em;
}
.portal-card p{
  color:var(--muted);
  font-size:14px;
  line-height:1.8;
  margin-bottom:1rem;
}
.portal-go{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  color:var(--ink);
  font-size:13.5px;
  font-weight:700;
}
.portal-go svg{
  transition:transform .2s ease;
}
.portal-card:hover .portal-go svg{
  transform:translateX(3px);
}

/* process dark */
.process-zone{
  background:var(--dark);
  color:#D8D4CB;
  padding:clamp(4rem,8vw,6rem) 0;
}
.process-zone .eyebrow{
  color:var(--dark-text);
}
.process-zone .section-title{
  color:var(--dark-text);
}
.process-zone .section-sub{
  color:#A8A49C;
}
.process-zone .row{
  margin-top:1rem;
}
.process-item{
  border-top:1px solid rgba(255,255,255,.14);
  padding:1.8rem .4rem 1.4rem;
  height:100%;
}
.process-number{
  display:block;
  font-size:64px;
  font-weight:900;
  line-height:1;
  color:rgba(206,255,77,.75);
  margin-bottom:1rem;
  letter-spacing:-.03em;
}
.process-zone h3{
  color:#F7F4EE;
  font-size:1.14rem;
  font-weight:800;
  margin-bottom:.5rem;
}
.process-item p{
  color:#A8A49C;
  font-size:14px;
  line-height:1.85;
  margin-bottom:0;
}

/* support media and coverage */
.support-media{
  position:relative;
  background:var(--surface-deep);
  border:1px solid var(--line);
  border-radius:4px;
  padding:8px;
}
.support-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:2px;
}
.support-media-label{
  position:absolute;
  left:18px;
  bottom:18px;
  background:var(--ink);
  color:#fff;
  font-size:12.5px;
  font-weight:600;
  padding:.3rem .7rem;
  border-radius:999px;
}
.coverage-list{
  margin-top:1.1rem;
}
.coverage-item{
  display:grid;
  grid-template-columns:46px 1fr;
  grid-gap:.2rem 1.2rem;
  padding:1rem 0;
  border-bottom:1px solid var(--line);
  align-items:baseline;
}
.coverage-item:first-child{
  border-top:1px solid var(--line);
}
.coverage-no{
  font-size:1.8rem;
  font-weight:900;
  line-height:1;
  color:var(--ink);
}
.coverage-item h3{
  font-size:1.05rem;
  font-weight:800;
  margin:0 0 .25rem;
}
.coverage-item p{
  color:var(--muted);
  font-size:14px;
  line-height:1.75;
  margin:0;
}

/* version & download */
.version-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:6px;
  overflow:hidden;
}
.version-copy{
  padding:clamp(1.6rem,4vw,3rem);
}
.version-copy h2{
  font-size:clamp(1.7rem,3vw,2.5rem);
  font-weight:800;
  line-height:1.25;
  letter-spacing:-.01em;
}
.version-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1rem;
  margin:1.6rem 0 .6rem;
}
.version-grid-item{
  border:1px solid #ECE7DF;
  border-radius:4px;
  padding:1rem 1.1rem;
  background:#FBFAF7;
}
.version-grid-item h4{
  font-size:.86rem;
  margin:0 0 .35rem;
  color:var(--muted);
  font-weight:700;
  letter-spacing:.02em;
}
.version-grid-item span{
  font-size:15px;
  font-weight:700;
  color:var(--ink);
  display:block;
  line-height:1.6;
}
.version-side{
  background:var(--surface-deep);
  padding:clamp(1.4rem,4vw,2.4rem);
  height:100%;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
}
.version-note{
  border-left:3px solid var(--accent);
  background:var(--surface);
  border-radius:0 4px 4px 0;
  padding:1.1rem 1.2rem;
  font-size:14px;
  color:var(--muted);
  line-height:1.8;
}
.version-note strong{
  color:var(--ink);
  display:block;
  margin-bottom:.35rem;
  font-size:15px;
}
@media (max-width:575.98px){
  .version-grid{
    grid-template-columns:1fr;
  }
}

/* faq */
.faq-section .row{
  align-items:flex-start;
}
.faq-left{
  position:sticky;
  top:120px;
}
.faq-list{
  border-top:1px solid var(--line);
}
.faq-item{
  border-bottom:1px solid var(--line);
}
.faq-item summary{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  list-style:none;
  gap:1.2rem;
  padding:1.25rem .1rem;
  cursor:pointer;
  transition:background-color .2s ease;
}
.faq-item summary::-webkit-details-marker{
  display:none;
}
.faq-item summary::marker{
  content:none;
}
.faq-item summary h3{
  font-size:1.08rem;
  line-height:1.6;
  font-weight:700;
  margin:0;
  color:var(--ink);
  transition:color .2s ease;
}
.faq-item summary:hover h3{
  color:#1F4A40;
}
.faq-item summary:focus-visible{
  outline:2px solid var(--ink);
  outline-offset:4px;
}
.faq-mark{
  position:relative;
  width:22px;
  height:22px;
  border-radius:999px;
  background:#F1EEE8;
  border:1px solid var(--line);
  flex-shrink:0;
  margin-top:.2rem;
}
.faq-mark::before{
  content:"";
  position:absolute;
  top:50%;
  left:50%;
  width:9px;
  height:2px;
  background:var(--muted);
  transform:translate(-50%,-50%);
  transition:background .2s ease;
}
.faq-mark::after{
  content:"";
  position:absolute;
  top:50%;
  left:50%;
  width:2px;
  height:9px;
  background:var(--muted);
  transform:translate(-50%,-50%);
  transition:opacity .2s ease;
}
.faq-item details[open] .faq-mark{
  background:var(--accent);
  border-color:var(--accent);
}
.faq-item details[open] .faq-mark::before{
  background:var(--ink);
}
.faq-item details[open] .faq-mark::after{
  opacity:0;
}
.faq-answer{
  padding:0 2rem .8rem 0;
}
.faq-answer p{
  color:var(--muted);
  font-size:15px;
  line-height:1.8;
  margin:0;
  max-width:680px;
}

/* CTA */
.cta-panel{
  position:relative;
  background:var(--dark);
  color:var(--dark-text);
  border-radius:6px;
  padding:clamp(2rem,5vw,3.4rem);
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:1.6rem 2.4rem;
  overflow:hidden;
}
.cta-panel::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:5px;
  background:var(--accent);
}
.cta-panel::after{
  content:"";
  position:absolute;
  right:-90px;
  bottom:-130px;
  width:250px;
  height:250px;
  border-radius:50%;
  border:50px solid rgba(206,255,77,.06);
  pointer-events:none;
}
.cta-copy{
  position:relative;
  z-index:2;
  max-width:620px;
}
.cta-copy h2{
  color:#fff;
  font-size:clamp(1.6rem,3vw,2.3rem);
  margin-bottom:.35rem;
}
.cta-copy p{
  color:#BDB8AF;
  margin:0;
}
.cta-actions{
  position:relative;
  z-index:2;
  display:flex;
  flex-wrap:wrap;
  gap:.8rem;
}

/* footer */
.site-footer{
  background:var(--dark);
  color:#A6A39B;
  padding:clamp(3rem,6vw,4.5rem) 0 0;
  margin-top:clamp(3rem,7vw,5rem);
}
.site-footer .footer-row{
  row-gap:2rem;
}
.site-footer h3{
  font-size:12px;
  height:auto;
  font-weight:700;
  letter-spacing:.12em;
  color:#EDEBE4;
  text-transform:uppercase;
  margin-bottom:1rem;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:.7rem;
  color:#F7F4EE;
  font-size:1.16rem;
  font-weight:900;
  line-height:1.3;
  margin-bottom:1rem;
  letter-spacing:-.01em;
}
.footer-desc{
  max-width:350px;
  font-size:13px;
  line-height:1.9;
  color:#A6A39B;
  margin:0;
}
.footer-links{
  list-style:none;
  padding:0;
  margin:0;
}
.footer-links li+li{
  margin-top:.4rem;
}
.footer-links a{
  color:#C5C1B8;
  font-size:13px;
  line-height:1.9;
  transition:color .2s ease,padding-left .2s ease;
}
.footer-links a:hover{
  color:var(--accent);
  padding-left:4px;
}
.footer-note{
  background:rgba(255,255,255,.05);
  border-left:2px solid var(--coral);
  border-radius:0 4px 4px 0;
  color:#ADAAA1;
  font-size:12.5px;
  line-height:1.85;
  padding:.8rem 1rem;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.5rem 2rem;
  border-top:1px solid rgba(255,255,255,.1);
  margin-top:2.6rem;
  padding:1.1rem 0;
  font-size:12px;
  color:#8B8981;
}
.site-domain{
  color:#6F6D67;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace,serif;
}

@media (max-width:991.98px){
  .faq-left{
    position:static;
  }
}
@media (max-width:767.98px){
  .category-hero{
    padding-top:3rem;
  }
  .hero-actions .btn-entry,
  .hero-actions .btn-line{
    width:100%;
  }
  .cta-panel{
    align-items:flex-start;
  }
  .cta-actions .btn-entry,
  .cta-actions .btn-line{
    width:100%;
  }
}
@media (max-width:520px){
  body{
    font-size:15px;
  }
  .brand-text{
    font-size:1.05rem;
  }
  .container{
    padding-left:15px;
    padding-right:15px;
  }
}