/* roulang page: index */
:root{
  --brand-900:#072A22;
  --brand-700:#0E5A46;
  --brand-500:#17916F;
  --brand-050:#EDF6F1;
  --accent:#BEF264;
  --warm:#FF7A45;
  --canvas:#F6F5F0;
  --surface:#FFFFFF;
  --line:#E4E2DA;
  --ink:#10201C;
  --muted:#5B6B66;
  --r-card:18px;
  --r-sm:12px;
  --r-lg:24px;
  --sh:0 1px 2px rgba(7,42,34,.06);
  --sh-h:0 14px 30px -14px rgba(7,42,34,.20);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Inter","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--canvas);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.container{max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:1024px){.container{padding:0 32px;}}

.section{padding:44px 0;}
@media(min-width:768px){.section{padding:64px 0;}}
@media(min-width:1024px){.section{padding:84px 0;}}

.section-head{display:flex;flex-direction:column;gap:12px;margin-bottom:28px;}
@media(min-width:768px){.section-head{flex-direction:row;align-items:flex-end;justify-content:space-between;margin-bottom:36px;}}
.section-kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--brand-500);text-transform:uppercase;}
.section-title{font-size:24px;line-height:1.35;font-weight:700;color:var(--brand-900);letter-spacing:-.01em;}
@media(min-width:768px){.section-title{font-size:28px;}}
.section-desc{font-size:15px;color:var(--muted);max-width:660px;}

/* ---------- navigation ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--canvas);padding:12px 0;}
.nav-shell{
  display:flex;align-items:center;gap:18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh);
  padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(140deg,var(--brand-700),var(--brand-500));
  color:var(--accent);
  display:grid;place-items:center;
  font-weight:800;font-size:14px;letter-spacing:.02em;
}
.brand-text strong{display:block;font-size:15px;font-weight:800;color:var(--brand-900);line-height:1.25;}
.brand-text em{display:block;font-size:11px;color:var(--muted);font-style:normal;line-height:1.4;}
.nav-cards{display:flex;gap:8px;flex:1;justify-content:center;}
.nav-card{
  display:flex;align-items:center;gap:8px;
  padding:8px 12px;min-height:44px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  transition:background-color .18s ease,border-color .18s ease,transform .18s ease;
}
.nav-card i{
  width:26px;height:26px;border-radius:8px;background:var(--brand-050);
  display:grid;place-items:center;font-size:12px;color:var(--brand-700);font-style:normal;
  transition:background-color .18s ease,color .18s ease;
}
.nav-card span{font-size:13px;font-weight:600;color:var(--ink);white-space:nowrap;}
.nav-card:hover{background:var(--brand-050);border-color:var(--line);transform:translateY(-1px);}
.nav-card:hover i{background:var(--accent);color:var(--brand-900);}
.nav-card.is-active{background:var(--brand-050);border-color:var(--brand-500);}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-900);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-900);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-drawer{display:none;flex-direction:column;gap:8px;margin-top:10px;padding:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-h);}
.nav-drawer.is-open{display:flex;}
.drawer-item{display:flex;align-items:center;min-height:46px;padding:0 14px;border-radius:var(--r-sm);font-size:14px;font-weight:600;border:1px solid transparent;background:var(--canvas);}
.drawer-item:hover{background:var(--brand-050);border-color:var(--line);}
.drawer-item.is-active{background:var(--brand-050);border-color:var(--brand-500);color:var(--brand-700);}
@media(max-width:1023px){
  .nav-cards{display:none;}
  .nav-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-shell{justify-content:space-between;}
}
@media(min-width:1024px){
  .nav-drawer{display:none !important;}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:999px;
  border:1px solid transparent;font-weight:600;font-size:15px;
  cursor:pointer;white-space:nowrap;
  transition:transform .16s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{background:var(--accent);color:var(--brand-900);box-shadow:0 8px 18px -10px rgba(7,42,34,.45);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 14px 26px -12px rgba(7,42,34,.5);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px -8px rgba(7,42,34,.5);}
.btn-outline{background:var(--surface);border-color:var(--brand-500);color:var(--brand-700);}
.btn-outline:hover{background:var(--brand-050);border-color:var(--brand-700);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(0);}
.btn-ghost-dark{background:transparent;border-color:rgba(255,255,255,.45);color:#fff;}
.btn-ghost-dark:hover{background:rgba(255,255,255,.10);border-color:#fff;transform:translateY(-1px);}
.btn-lg{min-height:50px;padding:0 26px;font-size:16px;}
.text-link{
  font-size:15px;font-weight:600;color:var(--brand-700);
  text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;
  display:inline-flex;align-items:center;gap:6px;min-height:44px;
  transition:color .18s ease;
}
.text-link:hover{color:var(--brand-500);}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:30px 0 12px;}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(7,42,34,.05) 1px,transparent 1px);
  background-size:16px 16px;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;top:-120px;right:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(190,242,100,.28),rgba(190,242,100,0) 65%);
  pointer-events:none;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:34px;align-items:center;}
@media(min-width:1024px){.hero-grid{grid-template-columns:6fr 6fr;gap:52px;}}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  color:var(--brand-700);background:var(--brand-050);
  border:1px solid var(--line);border-radius:999px;padding:6px 14px;margin-bottom:18px;
}
.hero h1{
  font-size:clamp(28px,4.4vw,42px);
  line-height:1.22;font-weight:800;letter-spacing:-.01em;
  color:var(--brand-900);margin-bottom:16px;
}
.hero-sub{font-size:17px;color:var(--muted);max-width:560px;margin-bottom:20px;}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1.33;font-weight:600;
  padding:6px 12px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);color:var(--brand-700);
}
.badge-warm{background:#FFF3EC;border-color:#FFD9C7;color:#C24A17;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:14px;}
@media(max-width:639px){
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-actions .text-link{justify-content:center;}
}
.hero-note{font-size:13px;color:var(--muted);display:flex;align-items:flex-start;gap:8px;}
.hero-note::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-500);margin-top:9px;flex-shrink:0;}
.device-frame{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:12px;box-shadow:var(--sh);}
.device-frame img{border-radius:14px;width:100%;aspect-ratio:4/3;object-fit:cover;}

/* ---------- trust bar ---------- */
.trust-bar{
  display:grid;grid-template-columns:repeat(2,1fr);
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);
}
.trust-cell{padding:24px 16px;text-align:center;border-right:1px solid var(--line);border-bottom:1px solid var(--line);}
.trust-cell:nth-child(2n){border-right:none;}
.trust-cell:nth-child(n+3){border-bottom:none;}
.trust-num{font-family:"Inter",sans-serif;font-size:30px;font-weight:800;color:var(--brand-700);line-height:1.1;letter-spacing:-.02em;}
.trust-num small{font-size:15px;font-weight:700;margin-left:2px;}
.trust-label{font-size:13px;color:var(--muted);margin-top:6px;}
@media(min-width:768px){
  .trust-bar{grid-template-columns:repeat(4,1fr);}
  .trust-cell{border-bottom:none;border-right:1px solid var(--line);}
  .trust-cell:nth-child(2n){border-right:1px solid var(--line);}
  .trust-cell:nth-child(4n){border-right:none;}
}

/* ---------- value ---------- */
.value-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:900px){.value-grid{grid-template-columns:1fr 1fr;}}
.card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh);
  transition:transform .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-h);}
.value-card{padding:26px;}
.value-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-050);
  display:grid;place-items:center;font-size:18px;color:var(--brand-700);margin-bottom:16px;
}
.value-title{font-size:19px;font-weight:700;color:var(--brand-900);margin-bottom:10px;}
.value-text{font-size:15px;color:var(--muted);}
.value-wide{grid-column:1/-1;padding:26px;}
@media(min-width:900px){
  .value-wide{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center;padding:32px;}
}
.value-wide figure{margin:0;border-radius:16px;overflow:hidden;border:1px solid var(--line);}
.value-wide figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.check-list{margin-top:14px;display:grid;gap:8px;}
.check-list li{position:relative;padding-left:22px;font-size:14px;color:var(--muted);}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 3px var(--brand-050);
}

/* ---------- carousel ---------- */
.carousel-wrap{position:relative;}
.shot-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 20px;scrollbar-width:none;
}
.shot-track::-webkit-scrollbar{display:none;}
.shot-card{
  flex:0 0 292px;scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:14px;box-shadow:var(--sh);
  transition:transform .2s ease,box-shadow .2s ease;
}
@media(min-width:768px){.shot-card{flex:0 0 340px;}}
.shot-card:hover{transform:translateY(-2px);box-shadow:var(--sh-h);}
.shot-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:16px;border:1px solid var(--line);}
.shot-card h3{font-size:16px;font-weight:700;color:var(--brand-900);margin:14px 0 6px;}
.shot-card p{font-size:13.5px;color:var(--muted);}
.carousel-arrows{display:none;}
@media(min-width:1024px){
  .carousel-arrows{display:block;}
  .carousel-arrow{
    position:absolute;top:42%;transform:translateY(-50%);
    width:44px;height:44px;border-radius:50%;
    background:var(--surface);border:1px solid var(--brand-500);color:var(--brand-700);
    display:grid;place-items:center;cursor:pointer;z-index:3;
    transition:background-color .18s ease,border-color .18s ease,color .18s ease;
  }
  .carousel-arrow:hover{background:var(--brand-050);border-color:var(--brand-700);color:var(--brand-900);}
  .carousel-arrow.prev{left:-22px;}
  .carousel-arrow.next{right:-22px;}
}
.carousel-dots{display:flex;justify-content:center;gap:8px;margin-top:4px;}
.carousel-dot{width:8px;height:8px;border-radius:50%;background:var(--line);border:none;padding:0;cursor:pointer;transition:background-color .2s ease,width .2s ease;}
.carousel-dot.is-active{background:var(--brand-700);width:22px;border-radius:999px;}

/* ---------- platform ---------- */
.platform-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:640px){.platform-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.platform-grid{grid-template-columns:repeat(3,1fr);}}
.platform-card{padding:22px;}
.platform-head{display:flex;align-items:center;gap:12px;padding-bottom:16px;margin-bottom:6px;border-bottom:1px solid var(--line);}
.platform-avatar{width:42px;height:42px;border-radius:12px;background:var(--brand-050);color:var(--brand-700);display:grid;place-items:center;font-weight:700;font-size:15px;}
.platform-name{font-size:17px;font-weight:700;color:var(--brand-900);}
.platform-sub{font-size:12px;color:var(--muted);}
.kv-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed var(--line);}
.kv-row:last-child{border-bottom:none;}
.kv-label{font-size:12px;color:var(--muted);letter-spacing:.02em;}
.kv-value{font-size:15px;font-weight:600;color:var(--ink);text-align:right;}

/* ---------- reviews ---------- */
.review-wall{columns:1;column-gap:20px;}
@media(min-width:640px){.review-wall{columns:2;}}
@media(min-width:1024px){.review-wall{columns:3;}}
.review-card{
  break-inside:avoid;margin-bottom:20px;padding:20px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh);
  transition:transform .2s ease,box-shadow .2s ease;
}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--sh-h);}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:14px;color:var(--brand-900);background:var(--brand-050);}
.avatar.a2{background:#E8F1FF;color:#204B7A;}
.avatar.a3{background:#FFF1E6;color:#8A4A18;}
.avatar.a4{background:#EDE9FF;color:#40348A;}
.avatar.a5{background:#E6F7F2;color:#0E5A46;}
.review-name{font-size:14px;font-weight:700;color:var(--brand-900);}
.review-meta{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:8px;margin-top:2px;}
.stars{color:var(--warm);font-size:12px;letter-spacing:1px;}
.review-body{font-size:14.5px;color:var(--muted);}

/* ---------- dark cta ---------- */
.cta-dark{
  background:var(--brand-900);color:#fff;border-radius:var(--r-lg);
  padding:38px 24px;border:1px solid rgba(255,255,255,.08);
  position:relative;overflow:hidden;
}
@media(min-width:768px){.cta-dark{padding:52px 40px;}}
.cta-dark::before{
  content:"";position:absolute;top:-140px;right:-80px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(190,242,100,.20),rgba(190,242,100,0) 65%);
}
.cta-inner{position:relative;z-index:1;display:grid;gap:26px;}
@media(min-width:1024px){.cta-inner{grid-template-columns:1.15fr .85fr;align-items:center;gap:40px;}}
.cta-dark h2{font-size:26px;line-height:1.35;font-weight:800;color:#fff;margin-bottom:12px;letter-spacing:-.01em;}
@media(min-width:768px){.cta-dark h2{font-size:30px;}}
.cta-dark p{font-size:15px;color:rgba(255,255,255,.72);}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
@media(max-width:639px){
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
}
.cta-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.6);display:flex;gap:8px;align-items:flex-start;}
.cta-note::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);margin-top:9px;flex-shrink:0;}

/* ---------- news / cms ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);}}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh);
  transition:transform .2s ease,box-shadow .2s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-h);}
.news-cover{
  display:block;height:150px;
  background:linear-gradient(135deg,var(--brand-050),#DCEBE3 55%,#E9F2ED);
  border-bottom:1px solid var(--line);
}
.news-cover img{width:100%;height:100%;object-fit:cover;}
.news-body{display:flex;flex-direction:column;gap:10px;padding:18px;flex:1;}
.pill{
  align-self:flex-start;font-size:12px;font-weight:700;line-height:1.33;
  padding:4px 10px;border-radius:999px;
  background:var(--brand-050);color:var(--brand-700);
}
.news-title{
  font-size:16.5px;font-weight:700;color:var(--brand-900);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s ease;
}
.news-card:hover .news-title{color:var(--brand-700);}
.news-sum{
  font-size:13.5px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:12px;border-top:1px solid var(--line);}
.news-date{font-size:12px;color:var(--muted);}
.news-more{font-size:13px;font-weight:700;color:var(--brand-700);}
.news-empty{
  grid-column:1/-1;min-height:160px;display:grid;place-items:center;
  border:1px dashed var(--line);border-radius:var(--r-card);
  background:var(--surface);color:var(--muted);font-size:15px;
}

/* ---------- faq ---------- */
.faq-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);position:relative;}
.faq-item:last-child{border-bottom:none;}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--accent);
  opacity:0;transition:opacity .2s ease;
}
.faq-item[open]::before{opacity:1;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 46px 18px 22px;position:relative;
  font-size:16px;font-weight:600;color:var(--brand-900);
  transition:background-color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--brand-050);}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--brand-500);line-height:1;
}
.faq-item[open] summary::after{content:"–";}
.faq-answer{padding:0 46px 20px 22px;font-size:15px;line-height:1.8;color:var(--muted);}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);margin-top:56px;padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px;}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.10);color:var(--accent);border:1px solid rgba(255,255,255,.12);}
.footer-brand strong{font-size:16px;font-weight:800;color:#fff;}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s ease;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--accent);}
.footer-form{display:flex;gap:10px;margin-top:6px;}
.footer-form input{
  flex:1;min-height:46px;padding:0 14px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;
  font-size:14px;
}
.footer-form input::placeholder{color:rgba(255,255,255,.45);}
.footer-form input:focus{outline:2px solid var(--accent);outline-offset:2px;}
.footer-form button{
  min-height:46px;padding:0 18px;border-radius:var(--r-sm);border:none;cursor:pointer;
  background:var(--accent);color:var(--brand-900);font-weight:700;font-size:14px;
  transition:filter .16s ease,transform .16s ease;
}
.footer-form button:hover{filter:brightness(1.06);transform:translateY(-1px);}
.footer-hint{font-size:12px;color:rgba(255,255,255,.45);margin-top:10px;}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* roulang page: article */
:root{
    --brand-900:#072A22;
    --brand-700:#0E5A46;
    --brand-500:#17916F;
    --brand-050:#EDF6F1;
    --accent:#BEF264;
    --warm:#FF7A45;
    --canvas:#F6F5F0;
    --surface:#FFFFFF;
    --line:#E4E2DA;
    --ink:#10201C;
    --muted:#5B6B66;
    --r-card:18px;
    --r-sm:12px;
    --r-pill:999px;
    --r-cta:24px;
    --sh-1:0 1px 2px rgba(7,42,34,.06);
    --sh-2:0 14px 30px -14px rgba(7,42,34,.20);
    --gap-section:44px;
  }
  @media (min-width:768px){ :root{ --gap-section:64px; } }
  @media (min-width:1024px){ :root{ --gap-section:88px; } }

  *,*::before,*::after{box-sizing:border-box}
  html{margin:0;padding:0;scroll-behavior:smooth}
  body{
    margin:0;
    padding:0;
    background:var(--canvas);
    color:var(--ink);
    font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border-radius:var(--r-sm)}
  a{color:var(--brand-700);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
  a:hover{color:var(--brand-900)}
  button,input{font-family:inherit;font-size:inherit}
  button{cursor:pointer;border:none;background:none;color:inherit}
  h1,h2,h3,h4{margin:0;letter-spacing:-0.01em}
  ul,ol{margin:0;padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:1024px){ .container{padding:0 32px} }

  /* ---------- header ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:var(--canvas);
    padding:12px 0;
    border-bottom:1px solid transparent;
  }
  .header-panel{
    display:flex;
    align-items:center;
    gap:16px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-1);
    padding:10px 14px;
  }
  .brand{
    display:flex;
    align-items:center;
    gap:10px;
    color:var(--brand-900);
    flex-shrink:0;
  }
  .brand:hover{color:var(--brand-700)}
  .brand-mark{
    width:36px;height:36px;
    border-radius:11px;
    background:var(--brand-900);
    color:var(--accent);
    display:grid;place-items:center;
    font-size:13px;font-weight:800;letter-spacing:.02em;
    font-family:Inter,system-ui,sans-serif;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15}
  .brand-name{font-size:16px;font-weight:800;color:var(--brand-900)}
  .brand-sub{font-size:11px;color:var(--muted);letter-spacing:.02em}

  .nav-cards{display:flex;align-items:center;gap:6px;margin-left:auto}
  .nav-card{
    display:flex;align-items:center;gap:8px;
    padding:8px 12px;
    min-height:44px;
    border-radius:var(--r-sm);
    font-size:13px;
    color:var(--ink);
    white-space:nowrap;
    transition:background-color .18s ease,color .18s ease,box-shadow .18s ease;
  }
  .nav-card i{
    width:20px;height:20px;border-radius:6px;
    background:var(--brand-050);
    color:var(--brand-700);
    display:grid;place-items:center;
    font-style:normal;font-size:11px;font-weight:700;
    transition:background-color .18s ease,color .18s ease;
  }
  .nav-card:hover{background:var(--brand-050);color:var(--brand-700)}
  .nav-card:hover i{background:var(--brand-700);color:var(--accent)}
  .nav-card.is-active{background:var(--brand-050);color:var(--brand-700);font-weight:600}
  .nav-card.is-active i{background:var(--brand-700);color:var(--accent)}

  .header-actions{display:flex;align-items:center;gap:10px;margin-left:6px}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;
    padding:10px 20px;
    border-radius:var(--r-pill);
    font-size:14px;font-weight:600;
    border:1px solid transparent;
    transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,filter .18s ease;
  }
  .btn-primary{background:var(--accent);color:var(--brand-900);box-shadow:var(--sh-1)}
  .btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--sh-2);color:var(--brand-900)}
  .btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
  .btn-ghost{background:var(--surface);border-color:var(--brand-500);color:var(--brand-700)}
  .btn-ghost:hover{background:var(--brand-050);border-color:var(--brand-700);color:var(--brand-700)}
  .btn-outline-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
  .btn-outline-light:hover{background:rgba(255,255,255,.10);border-color:#fff;color:#fff}

  .nav-toggle{
    display:none;
    width:44px;height:44px;
    border-radius:var(--r-sm);
    border:1px solid var(--line);
    background:var(--surface);
    color:var(--brand-900);
    font-size:13px;font-weight:700;
  }
  .nav-toggle:hover{background:var(--brand-050)}

  .mobile-drawer{display:none}
  .mobile-drawer.is-open{display:block}
  .drawer-inner{
    margin-top:10px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-2);
    padding:12px;
    display:flex;flex-direction:column;gap:8px;
  }
  .drawer-inner .nav-card{width:100%}
  .drawer-inner .btn{width:100%}

  @media (max-width:960px){
    .nav-cards{display:none}
    .header-actions .btn-primary{display:none}
    .nav-toggle{display:inline-flex;align-items:center;justify-content:center;margin-left:auto}
  }
  @media (max-width:520px){
    .brand-sub{display:none}
    .brand-name{font-size:15px}
  }

  /* ---------- breadcrumb ---------- */
  .breadcrumb{
    padding:22px 0 0;
    font-size:13px;
    color:var(--muted);
    display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  }
  .breadcrumb a{color:var(--muted)}
  .breadcrumb a:hover{color:var(--brand-700)}
  .breadcrumb .sep{color:#B9BDB6}
  .breadcrumb .current{color:var(--ink);max-width:70vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

  /* ---------- article head ---------- */
  .article-head{padding:28px 0 22px;border-bottom:1px solid var(--line)}
  .article-title{
    font-size:clamp(26px,4.4vw,40px);
    line-height:1.28;
    font-weight:800;
    color:var(--brand-900);
    letter-spacing:-0.01em;
    max-width:900px;
  }
  .article-meta{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;
    margin-top:18px;
    font-size:13px;
    color:var(--muted);
  }
  .pill{
    display:inline-flex;align-items:center;
    padding:4px 12px;
    border-radius:var(--r-pill);
    background:var(--brand-050);
    color:var(--brand-700);
    font-size:12px;font-weight:600;
  }
  .pill-warm{background:#FFF1EA;color:#C1441A}
  .meta-dot{width:4px;height:4px;border-radius:50%;background:#C9CFC8;display:inline-block}

  /* ---------- layout ---------- */
  .article-layout{
    display:grid;
    grid-template-columns:minmax(0,1fr);
    gap:36px;
    padding:44px 0 var(--gap-section);
  }
  @media (min-width:1024px){
    .article-layout{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:56px}
  }

  /* ---------- article body ---------- */
  .article-body{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-1);
    padding:26px 20px;
    max-width:860px;
    font-size:16px;
    line-height:1.78;
    color:var(--ink);
    word-break:break-word;
  }
  @media (min-width:768px){ .article-body{padding:40px 44px} }

  .article-body p{margin:0 0 1.25em}
  .article-body h2{
    position:relative;
    font-size:23px;
    line-height:1.5;
    font-weight:700;
    color:var(--brand-900);
    margin:2em 0 .8em;
    padding-left:16px;
  }
  .article-body h2::before{
    content:"";
    position:absolute;
    left:0;top:.32em;bottom:.32em;width:4px;
    background:var(--accent);
    border-radius:3px;
  }
  .article-body h3{
    font-size:19px;
    font-weight:600;
    color:var(--brand-700);
    margin:1.7em 0 .6em;
  }
  .article-body h4{font-size:17px;font-weight:600;margin:1.4em 0 .5em}
  .article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.3em}
  .article-body ul{list-style:disc}
  .article-body ol{list-style:decimal}
  .article-body li{margin:.42em 0}
  .article-body ul li::marker{color:var(--brand-500)}
  .article-body ol li::marker{color:var(--brand-500);font-weight:600}
  .article-body blockquote{
    margin:1.6em 0;
    padding:16px 20px;
    border-left:3px solid var(--brand-700);
    background:var(--brand-050);
    border-radius:0 var(--r-sm) var(--r-sm) 0;
    color:#20362F;
  }
  .article-body blockquote p:last-child{margin-bottom:0}
  .article-body img{
    margin:1.6em auto;
    border-radius:12px;
    box-shadow:var(--sh-1);
  }
  .article-body figure{margin:1.6em 0}
  .article-body figcaption{
    text-align:center;
    font-size:13px;
    color:var(--muted);
    margin-top:10px;
  }
  .article-body a{border-bottom:1px solid rgba(14,90,70,.35)}
  .article-body a:hover{color:var(--brand-900);border-bottom-color:var(--brand-900)}
  .article-body strong{font-weight:700;color:var(--brand-900)}
  .article-body code{
    background:var(--brand-050);
    color:var(--brand-700);
    padding:2px 6px;
    border-radius:6px;
    font-size:14px;
  }
  .article-body pre{
    background:var(--brand-900);
    color:#E8F2EC;
    padding:18px 20px;
    border-radius:var(--r-sm);
    overflow-x:auto;
    font-size:14px;
    line-height:1.7;
  }
  .article-body pre code{background:none;color:inherit;padding:0}
  .article-body table{
    display:block;
    width:100%;
    overflow-x:auto;
    border-collapse:collapse;
    margin:1.6em 0;
    font-size:14px;
  }
  .article-body th,.article-body td{
    border:1px solid var(--line);
    padding:10px 14px;
    text-align:left;
    white-space:nowrap;
  }
  .article-body th{background:var(--brand-050);color:var(--brand-700);font-weight:600}
  .article-body hr{border:none;border-top:1px solid var(--line);margin:2em 0}

  .notfound{
    border:1px dashed #C8D3CC;
    border-radius:var(--r-card);
    background:var(--surface);
    padding:48px 24px;
    text-align:center;
    color:var(--muted);
  }
  .notfound strong{display:block;font-size:18px;color:var(--brand-900);margin-bottom:10px}

  /* ---------- sidebar ---------- */
  .sidebar{display:flex;flex-direction:column;gap:20px}
  @media (min-width:1024px){
    .sidebar{position:sticky;top:96px;align-self:start}
  }
  .side-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-1);
    padding:20px;
  }
  .side-title{
    font-size:14px;
    font-weight:700;
    color:var(--brand-900);
    margin-bottom:14px;
    display:flex;align-items:center;gap:8px;
  }
  .side-title::before{
    content:"";
    width:4px;height:14px;border-radius:2px;background:var(--accent);
  }
  .toc-list{display:flex;flex-direction:column;gap:4px}
  .toc-list a{
    display:flex;align-items:center;gap:10px;
    padding:9px 10px;
    min-height:44px;
    border-radius:var(--r-sm);
    font-size:14px;
    color:var(--ink);
  }
  .toc-list a:hover{background:var(--brand-050);color:var(--brand-700)}
  .toc-list a span{color:var(--brand-500);font-size:12px;font-weight:700;font-family:Inter,system-ui,sans-serif}

  .kv-row{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding:10px 0;
    border-bottom:1px dashed var(--line);
    font-size:14px;
  }
  .kv-row:last-child{border-bottom:none;padding-bottom:0}
  .kv-row dt{color:var(--muted);font-size:12px}
  .kv-row dd{margin:0;color:var(--ink);font-weight:600;font-size:15px}
  .kv-list{margin:0}

  .side-download{background:var(--brand-900);border:1px solid rgba(255,255,255,.08)}
  .side-download .side-title{color:#fff}
  .side-download p{color:rgba(255,255,255,.72);font-size:13px;margin:0 0 14px;line-height:1.7}
  .side-download .btn{width:100%;margin-bottom:8px}
  .side-download .btn:last-of-type{margin-bottom:0}

  /* ---------- tags / cta / related ---------- */
  .tag-row{
    display:flex;flex-wrap:wrap;gap:10px;
    padding:8px 0 0;
  }
  .tag{
    display:inline-flex;align-items:center;
    padding:7px 14px;
    border-radius:var(--r-pill);
    border:1px solid var(--line);
    background:var(--surface);
    color:var(--brand-700);
    font-size:13px;
  }
  .tag:hover{background:var(--brand-050);border-color:var(--brand-500);color:var(--brand-700)}

  .cta-panel{
    background:var(--brand-900);
    border-radius:var(--r-cta);
    border:1px solid rgba(255,255,255,.08);
    padding:32px 24px;
    margin-top:36px;
  }
  @media (min-width:768px){ .cta-panel{padding:44px 40px} }
  .cta-panel h2{
    color:#fff;
    font-size:clamp(21px,3vw,28px);
    font-weight:700;
    line-height:1.4;
  }
  .cta-panel p{
    color:rgba(255,255,255,.72);
    font-size:15px;
    margin:12px 0 24px;
    max-width:640px;
    line-height:1.75;
  }
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}
  .cta-hint{
    margin-top:18px;
    font-size:13px;
    color:rgba(255,255,255,.55);
  }
  @media (max-width:520px){
    .cta-actions{flex-direction:column}
    .cta-actions .btn{width:100%}
  }

  .related-wrap{padding:var(--gap-section) 0 0}
  .section-head{
    display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
    margin-bottom:24px;
  }
  .section-head h2{font-size:clamp(20px,2.6vw,26px);font-weight:700;color:var(--brand-900)}
  .section-head .more{font-size:14px;border-bottom:1px solid rgba(14,90,70,.35);padding-bottom:2px}
  .section-head .more:hover{border-bottom-color:var(--brand-900)}

  .related-grid{
    display:grid;
    grid-template-columns:minmax(0,1fr);
    gap:20px;
  }
  @media (min-width:700px){ .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))} }
  @media (min-width:1024px){ .related-grid{grid-template-columns:repeat(3,minmax(0,1fr))} }

  .post-card{
    display:flex;flex-direction:column;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-1);
    overflow:hidden;
    color:var(--ink);
    transition:transform .2s ease,box-shadow .2s ease;
  }
  .post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);color:var(--ink)}
  .post-cover{aspect-ratio:16/9;background:linear-gradient(135deg,#EDF6F1,#DCEDE4);overflow:hidden}
  .post-cover img{width:100%;height:100%;object-fit:cover;border-radius:0}
  .post-body{padding:18px 18px 16px;display:flex;flex-direction:column;gap:10px;flex:1}
  .post-cat{
    align-self:flex-start;
    padding:4px 11px;
    border-radius:var(--r-pill);
    background:var(--brand-050);
    color:var(--brand-700);
    font-size:12px;font-weight:600;
  }
  .post-title{
    font-size:16px;
    font-weight:700;
    line-height:1.55;
    color:var(--brand-900);
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
    transition:color .18s ease;
  }
  .post-card:hover .post-title{color:var(--brand-700)}
  .post-excerpt{
    font-size:14px;
    color:var(--muted);
    line-height:1.7;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
    margin:0;
  }
  .post-foot{
    margin-top:auto;
    padding-top:12px;
    border-top:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;
    font-size:12px;
    color:var(--muted);
  }
  .post-arrow{color:var(--brand-700);font-weight:600}

  .back-link-row{padding:32px 0 0}
  .back-link{
    display:inline-flex;align-items:center;gap:8px;
    font-size:14px;
    color:var(--brand-700);
    border-bottom:1px solid rgba(14,90,70,.35);
    padding-bottom:2px;
  }
  .back-link:hover{border-bottom-color:var(--brand-900);color:var(--brand-900)}

  /* ---------- footer ---------- */
  .site-footer{
    margin-top:var(--gap-section);
    background:var(--brand-900);
    border-top:1px solid rgba(255,255,255,.08);
    padding:52px 0 24px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:minmax(0,1fr);
    gap:32px;
  }
  @media (min-width:760px){ .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px} }

  .footer-col h4{
    font-size:14px;
    font-weight:600;
    color:#FFFFFF;
    margin-bottom:16px;
  }
  .footer-col ul{display:flex;flex-direction:column;gap:10px}
  .footer-col ul a{
    font-size:14px;
    color:rgba(255,255,255,.72);
    border-bottom:1px solid transparent;
  }
  .footer-col ul a:hover{color:#fff;border-bottom-color:var(--accent)}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .footer-brand .brand-mark{background:rgba(255,255,255,.08);color:var(--accent)}
  .footer-brand strong{color:#fff;font-size:16px;font-weight:800}
  .footer-desc{
    font-size:14px;
    line-height:1.8;
    color:rgba(255,255,255,.66);
    margin:0;
    max-width:360px;
  }
  .footer-form{display:flex;gap:8px;flex-wrap:wrap}
  .footer-form input{
    flex:1 1 160px;
    min-width:0;
    height:46px;
    padding:0 14px;
    border-radius:var(--r-sm);
    border:1px solid rgba(255,255,255,.18);
    background:rgba(255,255,255,.06);
    color:#fff;
    font-size:14px;
    outline:none;
  }
  .footer-form input::placeholder{color:rgba(255,255,255,.45)}
  .footer-form input:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(190,242,100,.45)}
  .footer-form button{
    height:46px;
    padding:0 20px;
    border-radius:var(--r-sm);
    background:var(--accent);
    color:var(--brand-900);
    font-size:14px;
    font-weight:700;
    transition:filter .18s ease,transform .18s ease;
  }
  .footer-form button:hover{filter:brightness(1.06);transform:translateY(-1px)}
  .footer-hint{
    margin:10px 0 0;
    font-size:12px;
    color:rgba(255,255,255,.48);
  }
  .footer-bottom{
    margin-top:40px;
    padding-top:20px;
    border-top:1px solid rgba(255,255,255,.10);
    display:flex;
    flex-wrap:wrap;
    gap:10px 24px;
    justify-content:space-between;
    font-size:13px;
    color:rgba(255,255,255,.55);
  }

/* roulang page: category1 */
:root{
  --brand-900:#072A22;
  --brand-700:#0E5A46;
  --brand-500:#17916F;
  --brand-050:#EDF6F1;
  --accent:#BEF264;
  --warm:#FF7A45;
  --canvas:#F6F5F0;
  --surface:#FFFFFF;
  --line:#E4E2DA;
  --ink:#10201C;
  --muted:#5B6B66;
  --radius-card:18px;
  --radius-sm:12px;
  --radius-lg:24px;
  --shadow-1:0 1px 2px rgba(7,42,34,.06);
  --shadow-2:0 14px 30px -14px rgba(7,42,34,.20);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--canvas);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-700);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-500);}
button,input{font:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container{padding:0 32px;}}

/* ===== 顶部导航（卡片化面板） ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  padding:12px 0 8px;
  background:linear-gradient(180deg,var(--canvas) 72%,rgba(246,245,240,.85));
}
.nav-shell{
  display:flex;align-items:center;gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:10px 14px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--brand-900);color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;letter-spacing:.5px;
}
.brand-name{font-size:15px;font-weight:800;color:var(--brand-900);letter-spacing:-.01em;}
.nav-cards{display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:wrap;}
.nav-card{
  display:flex;align-items:center;gap:8px;
  padding:7px 12px;border-radius:var(--radius-sm);
  border:1px solid transparent;
  color:var(--brand-900);font-size:13px;font-weight:600;
  transition:background .18s ease,border-color .18s ease,transform .18s ease;
}
.nav-card i{
  width:24px;height:24px;border-radius:8px;
  background:var(--brand-050);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;
  font-style:normal;font-size:12px;font-weight:700;
  transition:background .18s ease,color .18s ease;
}
.nav-card:hover{background:var(--brand-050);color:var(--brand-700);}
.nav-card:hover i{background:var(--accent);color:var(--brand-900);}
.nav-card.is-active{background:var(--brand-050);border-color:var(--brand-500);color:var(--brand-700);}
.nav-card.is-active i{background:var(--accent);color:var(--brand-900);}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:var(--surface);
  cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-900);border-radius:2px;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{background:var(--accent);color:var(--brand-900);box-shadow:var(--shadow-1);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--shadow-2);color:var(--brand-900);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:var(--surface);border-color:var(--brand-500);color:var(--brand-700);}
.btn-outline:hover{background:var(--brand-050);border-color:var(--brand-700);color:var(--brand-700);}
.btn-ghost{background:transparent;color:var(--brand-700);padding:0 8px;}
.btn-ghost span{border-bottom:1px solid currentColor;padding-bottom:2px;}
.btn-ghost:hover{color:var(--brand-500);}
.btn-light{background:transparent;border-color:rgba(255,255,255,.45);color:#fff;}
.btn-light:hover{background:rgba(255,255,255,.10);border-color:#fff;color:#fff;}

/* ===== 通用板块 ===== */
.section{padding:72px 0;}
.section-tight{padding:44px 0;}
.section-head{max-width:720px;margin-bottom:36px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--brand-700);background:var(--brand-050);
  border-radius:999px;padding:5px 12px;margin-bottom:14px;
}
h1,h2,h3,h4{margin:0;color:var(--brand-900);letter-spacing:-.01em;}
h1{font-size:30px;line-height:1.28;font-weight:800;}
h2{font-size:26px;line-height:1.35;font-weight:700;}
h3{font-size:19px;line-height:1.45;font-weight:600;}
p{margin:0;}
.lead{color:var(--muted);font-size:16px;line-height:1.8;}
.muted{color:var(--muted);font-size:13px;line-height:1.7;}
@media (min-width:768px){
  h1{font-size:36px;}
  h2{font-size:28px;}
  .section{padding:80px 0;}
}
@media (min-width:1200px){
  h1{font-size:40px;line-height:1.2;}
}

/* ===== 页头 ===== */
.page-head{padding:40px 0 0;}
.page-head-grid{display:grid;gap:28px;}
.head-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;
  padding:6px 12px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);color:var(--muted);
}
.pill strong{color:var(--brand-700);font-weight:700;}
.pill.warm{border-color:rgba(255,122,69,.35);color:#B24A1F;background:#FFF4EF;}

/* ===== 视觉带 ===== */
.visual-band{
  margin-top:32px;
  border-radius:var(--radius-lg);
  min-height:220px;
  background-image:linear-gradient(120deg,rgba(7,42,34,.62),rgba(7,42,34,.28)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  border:1px solid var(--line);
  display:flex;align-items:flex-end;
  padding:24px;
  position:relative;overflow:hidden;
}
.visual-band::after{
  content:"";position:absolute;right:-40px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(190,242,100,.32),rgba(190,242,100,0) 68%);
  pointer-events:none;
}
.band-inner{position:relative;z-index:2;max-width:560px;}
.band-inner h3{color:#fff;}
.band-inner p{color:rgba(255,255,255,.82);font-size:14px;margin-top:8px;}

/* ===== 信息条 ===== */
.stat-strip{
  display:grid;grid-template-columns:repeat(2,1fr);
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  overflow:hidden;margin-top:24px;
}
.stat-cell{padding:20px 18px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);}
.stat-cell:nth-child(2n){border-right:none;}
.stat-cell:nth-child(n+3){border-bottom:none;}
.stat-num{font-size:24px;font-weight:800;color:var(--brand-700);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.stat-label{font-size:13px;color:var(--muted);margin-top:2px;}
@media (min-width:900px){
  .stat-strip{grid-template-columns:repeat(4,1fr);}
  .stat-cell{border-bottom:none;}
  .stat-cell:nth-child(2n){border-right:1px solid var(--line);}
  .stat-cell:last-child{border-right:none;}
}

/* ===== 主体：目录 + 图文流 ===== */
.layout-split{display:grid;gap:32px;}
@media (min-width:1024px){
  .layout-split{grid-template-columns:280px 1fr;gap:48px;align-items:start;}
}
.toc-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:20px;
}
.toc-card h4{font-size:14px;font-weight:700;color:var(--brand-900);margin-bottom:12px;}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:flex;align-items:center;gap:10px;
  padding:10px 10px;border-radius:var(--radius-sm);
  font-size:14px;color:var(--ink);font-weight:500;
}
.toc-list a i{font-style:normal;font-size:12px;font-weight:700;color:var(--brand-500);}
.toc-list a:hover{background:var(--brand-050);color:var(--brand-700);}
.toc-help{
  margin-top:16px;padding-top:16px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--muted);line-height:1.7;
}
@media (min-width:1024px){
  .toc-card{position:sticky;top:104px;}
}

.flow{display:flex;flex-direction:column;gap:56px;}
.flow-block{display:grid;gap:24px;align-items:center;scroll-margin-top:110px;}
@media (min-width:768px){
  .flow-block{grid-template-columns:1fr 1fr;gap:36px;}
  .flow-block.is-reverse .flow-media{order:2;}
}
.flow-media{
  border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:var(--brand-050);box-shadow:var(--shadow-1);
}
.flow-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;}
.flow-copy h2{margin-bottom:12px;}
.flow-copy p{color:var(--muted);font-size:15px;line-height:1.85;margin-bottom:14px;}
.check-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.check-list li{display:flex;gap:10px;font-size:14px;color:var(--ink);line-height:1.7;}
.check-list li::before{
  content:"";flex:0 0 8px;width:8px;height:8px;margin-top:9px;border-radius:50%;background:var(--accent);
}

/* ===== 步骤卡 ===== */
.step-row{display:grid;gap:16px;}
@media (min-width:768px){.step-row{grid-template-columns:repeat(3,1fr);}}
.step-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:22px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.step-index{
  width:32px;height:32px;border-radius:10px;background:var(--brand-900);color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;margin-bottom:14px;
}
.step-card h3{margin-bottom:8px;}
.step-card p{color:var(--muted);font-size:14px;line-height:1.8;}

/* ===== FAQ ===== */
.faq-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:8px 24px;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:20px 0 20px 18px;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary h3{font-size:16px;font-weight:600;color:var(--brand-900);}
.faq-item summary::after{
  content:"+";position:absolute;right:0;top:20px;
  font-size:18px;font-weight:600;color:var(--brand-500);line-height:1;
}
.faq-item[open] summary::after{content:"–";}
.faq-item[open] summary::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:4px;border-radius:2px;background:var(--accent);
}
.faq-answer{padding:0 0 20px 18px;font-size:15px;line-height:1.8;color:var(--muted);}

/* ===== 深色下载面板 ===== */
.cta-panel{
  background:var(--brand-900);border-radius:var(--radius-lg);
  padding:36px 26px;border:1px solid rgba(255,255,255,.08);
  display:grid;gap:24px;
}
@media (min-width:1024px){
  .cta-panel{grid-template-columns:1.2fr 1fr;align-items:center;padding:48px 44px;gap:40px;}
}
.cta-panel h2{color:#fff;margin-bottom:12px;}
.cta-panel p{color:rgba(255,255,255,.72);font-size:15px;line-height:1.85;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-actions .btn{flex:1 1 160px;}
.cta-note{
  margin-top:16px;font-size:13px;color:rgba(255,255,255,.6);
  border-top:1px dashed rgba(255,255,255,.18);padding-top:14px;
}

/* ===== 页脚 ===== */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:56px 0 24px;margin-top:24px;}
.footer-grid{display:grid;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.10);color:var(--accent);}
.footer-brand strong{color:#fff;font-size:16px;font-weight:800;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col ul a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:3px;}
.footer-form{display:flex;gap:8px;}
.footer-form input{
  flex:1;height:46px;padding:0 14px;border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);
  color:#fff;font-size:14px;min-width:0;
}
.footer-form input::placeholder{color:rgba(255,255,255,.45);}
.footer-form input:focus{outline:2px solid var(--accent);outline-offset:2px;}
.footer-form button{
  height:46px;padding:0 18px;border-radius:var(--radius-sm);border:none;
  background:var(--accent);color:var(--brand-900);font-size:14px;font-weight:700;cursor:pointer;
  transition:filter .18s ease,transform .18s ease;white-space:nowrap;
}
.footer-form button:hover{filter:brightness(1.06);transform:translateY(-1px);}
.footer-hint{font-size:12px;color:rgba(255,255,255,.5);margin-top:10px;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ===== 移动端导航 ===== */
@media (max-width:900px){
  .nav-toggle{display:flex;}
  .nav-cards{
    display:none;position:absolute;left:0;right:0;top:calc(100% + 8px);
    flex-direction:column;align-items:stretch;gap:6px;
    background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-card);box-shadow:var(--shadow-2);
    padding:12px;margin:0;
  }
  .nav-cards.is-open{display:flex;}
  .nav-card{padding:12px;font-size:14px;}
  .nav-cta{display:none;}
  .nav-shell{position:relative;}
}
@media (max-width:640px){
  .section{padding:44px 0;}
  .cta-actions .btn{flex:1 1 100%;}
  .visual-band{min-height:180px;padding:18px;}
  .faq-wrap{padding:4px 18px;}
}

/* roulang page: category2 */
:root{
    --brand-900:#072A22;
    --brand-700:#0E5A46;
    --brand-500:#17916F;
    --brand-050:#EDF6F1;
    --accent:#BEF264;
    --warm:#FF7A45;
    --canvas:#F6F5F0;
    --surface:#FFFFFF;
    --line:#E4E2DA;
    --ink:#10201C;
    --muted:#5B6B66;
    --r-card:18px;
    --r-sm:12px;
    --r-lg:24px;
    --shadow-sm:0 1px 2px rgba(7,42,34,.06);
    --shadow-md:0 14px 30px -14px rgba(7,42,34,.20);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--canvas);
    color:var(--ink);
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.75;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input{font:inherit;}
  h1,h2,h3,h4{margin:0;letter-spacing:-.01em;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:1024px){.container{padding:0 32px;}}

  /* ---------- header / nav ---------- */
  .site-header{position:sticky;top:0;z-index:60;background:var(--canvas);padding:14px 0 10px;}
  .nav-panel{
    display:flex;flex-wrap:wrap;align-items:center;gap:14px;justify-content:space-between;
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--shadow-sm);padding:10px 14px;
  }
  .brand{display:flex;align-items:center;gap:10px;min-height:44px;}
  .brand-mark{
    width:38px;height:38px;border-radius:12px;background:var(--brand-900);color:var(--accent);
    display:grid;place-items:center;font-weight:800;font-size:14px;letter-spacing:.02em;
    font-family:Inter,"Segoe UI",system-ui,sans-serif;
  }
  .brand-text{display:flex;flex-direction:column;}
  .brand-text strong{font-size:15px;line-height:1.25;font-weight:700;}
  .brand-text span{font-size:12px;color:var(--muted);line-height:1.4;}

  .nav-cards{display:flex;gap:8px;flex:1;justify-content:center;}
  .nav-card{
    display:flex;align-items:center;gap:8px;min-height:44px;padding:8px 12px;border-radius:var(--r-sm);
    border:1px solid transparent;font-size:13px;color:var(--ink);transition:background .18s,color .18s,border-color .18s;
  }
  .nav-card i{
    width:22px;height:22px;border-radius:7px;background:var(--brand-050);color:var(--brand-700);
    display:grid;place-items:center;font-style:normal;font-size:11px;font-weight:700;transition:background .18s,color .18s;
  }
  .nav-card:hover{background:var(--brand-050);border-color:var(--line);}
  .nav-card:hover i{background:var(--accent);color:var(--brand-900);}
  .nav-card.is-active{background:var(--brand-050);border-color:var(--brand-500);color:var(--brand-700);font-weight:600;}

  .nav-actions{display:flex;align-items:center;gap:10px;}
  .nav-toggle{
    display:none;width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--surface);
    cursor:pointer;padding:0;position:relative;
  }
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-900);margin:3px auto;border-radius:2px;}

  @media (max-width:1023px){
    .nav-cards{display:none;width:100%;flex-direction:column;gap:6px;justify-content:flex-start;}
    .nav-cards.is-open{display:flex;}
    .nav-card{width:100%;}
    .nav-toggle{display:block;}
    .nav-cta{display:none;}
  }

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;
    border-radius:999px;border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;
    transition:transform .18s,box-shadow .18s,background .18s,color .18s,border-color .18s;
  }
  .btn-primary{background:var(--accent);color:var(--brand-900);box-shadow:0 8px 20px -10px rgba(7,42,34,.45);}
  .btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 16px 30px -14px rgba(7,42,34,.42);}
  .btn-primary:active{transform:translateY(0);}
  .btn-secondary{background:var(--surface);border-color:var(--brand-500);color:var(--brand-700);}
  .btn-secondary:hover{background:var(--brand-050);border-color:var(--brand-700);}
  .btn-ghost{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
  .btn-ghost:hover{background:rgba(255,255,255,.10);border-color:#fff;}
  .btn-text{
    display:inline-flex;align-items:center;gap:6px;min-height:44px;font-size:15px;font-weight:600;
    color:var(--brand-700);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;
    transition:color .18s;
  }
  .btn-text:hover{color:var(--accent);}
  .btn-sm{min-height:40px;padding:0 16px;font-size:14px;}

  /* ---------- pills / chips ---------- */
  .pill{
    display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:12px;
    background:var(--brand-050);color:var(--brand-700);border:1px solid rgba(23,145,111,.18);white-space:nowrap;
  }
  .pill-warm{background:rgba(255,122,69,.12);color:#C24A1C;border-color:rgba(255,122,69,.28);}
  .pill-dark{background:rgba(255,255,255,.08);color:rgba(255,255,255,.82);border-color:rgba(255,255,255,.16);}

  .chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
  .chip{
    padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:var(--surface);
    font-size:13px;color:var(--muted);transition:background .18s,color .18s,border-color .18s;
  }
  .chip.is-on{background:var(--brand-900);color:#fff;border-color:var(--brand-900);}

  /* ---------- hero ---------- */
  .hero{padding-top:26px;}
  .crumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px;}
  .crumb a{transition:color .18s;}
  .crumb a:hover{color:var(--brand-700);}
  .crumb .sep{color:#C9C6BC;}
  .crumb .now{color:var(--ink);}

  .hero-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center;}
  @media (min-width:1024px){.hero-grid{grid-template-columns:1.04fr .96fr;gap:48px;}}

  .hero h1{font-size:28px;line-height:1.22;font-weight:800;}
  @media (min-width:768px){.hero h1{font-size:40px;line-height:1.2;}}
  .hero h1 em{font-style:normal;color:var(--brand-700);}
  .hero-sub{margin-top:16px;font-size:16px;color:var(--muted);line-height:1.8;max-width:640px;}
  .hero-pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;}
  .hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:26px;}
  .hero-note{margin-top:16px;font-size:13px;color:var(--muted);}
  .hero-note strong{color:var(--brand-700);font-weight:600;}

  .hero-media{
    position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);
    background:var(--surface);box-shadow:var(--shadow-md);
  }
  .hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
  .hero-media::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:radial-gradient(rgba(7,42,34,.10) 1px,transparent 1px);
    background-size:16px 16px;opacity:.5;
  }
  .hero-media-tag{
    position:absolute;left:16px;bottom:16px;z-index:2;background:var(--surface);border:1px solid var(--line);
    border-radius:999px;padding:6px 14px;font-size:12px;color:var(--brand-700);box-shadow:var(--shadow-sm);
  }

  /* ---------- sections ---------- */
  main{padding-bottom:8px;}
  section{margin-top:44px;}
  @media (min-width:768px){section{margin-top:64px;}}
  @media (min-width:1024px){section{margin-top:80px;}}

  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:24px;}
  .section-head h2{font-size:24px;line-height:1.3;font-weight:700;}
  @media (min-width:768px){.section-head h2{font-size:28px;}}
  .section-head p{font-size:14px;color:var(--muted);width:100%;max-width:720px;}

  /* ---------- stat bar ---------- */
  .stat-bar{
    display:grid;grid-template-columns:repeat(2,1fr);background:var(--surface);border:1px solid var(--line);
    border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-sm);
  }
  @media (min-width:768px){.stat-bar{grid-template-columns:repeat(4,1fr);}}
  .stat{padding:20px 18px;border-bottom:1px solid var(--line);border-right:1px solid var(--line);}
  .stat:nth-child(2n){border-right:0;}
  .stat:nth-last-child(-n+2){border-bottom:0;}
  @media (min-width:768px){
    .stat{border-right:1px solid var(--line);border-bottom:0;}
    .stat:nth-child(2n){border-right:1px solid var(--line);}
    .stat:last-child{border-right:0;}
  }
  .stat-value{font-family:Inter,"Segoe UI",system-ui,sans-serif;font-size:26px;font-weight:800;color:var(--brand-700);line-height:1.2;}
  .stat-label{margin-top:6px;font-size:13px;color:var(--muted);}

  /* ---------- card grid ---------- */
  .card-grid{display:grid;grid-template-columns:1fr;gap:24px;}
  @media (min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr);}}

  .card{
    display:flex;flex-direction:column;height:100%;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-sm);
    transition:transform .2s,box-shadow .2s;
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
  .card-cover{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#EDF6F1 0%,#CFE6DC 55%,#BEF264 140%);}
  .card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s;}
  .card:hover .card-cover img{transform:scale(1.03);}
  .card-body{display:flex;flex-direction:column;gap:10px;padding:18px;flex:1;}
  .card-title{
    font-size:17px;line-height:1.5;font-weight:600;transition:color .18s;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card:hover .card-title{color:var(--brand-700);}
  .card-text{
    font-size:14px;line-height:1.7;color:var(--muted);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card-foot{
    margin-top:auto;padding-top:12px;border-top:1px solid var(--line);display:flex;align-items:center;
    justify-content:space-between;gap:10px;font-size:12px;color:var(--muted);
  }
  .card-foot span.arrow{color:var(--brand-700);font-weight:600;}

  /* ---------- split ---------- */
  .split{display:grid;grid-template-columns:1fr;gap:28px;align-items:center;}
  @media (min-width:1024px){.split{grid-template-columns:1fr 1fr;gap:48px;}}
  .split-media{border-radius:20px;overflow:hidden;border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-sm);}
  .split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
  .split h2{font-size:24px;line-height:1.3;font-weight:700;}
  @media (min-width:768px){.split h2{font-size:28px;}}
  .split p.lead{margin-top:14px;font-size:15px;color:var(--muted);}

  .rule-list{display:grid;gap:14px;margin-top:24px;}
  .rule-item{
    display:flex;gap:14px;padding:16px 18px;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--r-sm);box-shadow:var(--shadow-sm);
  }
  .rule-num{
    flex:0 0 28px;width:28px;height:28px;border-radius:9px;background:var(--brand-050);color:var(--brand-700);
    display:grid;place-items:center;font-size:13px;font-weight:700;font-family:Inter,system-ui,sans-serif;
  }
  .rule-item h3{font-size:15px;font-weight:600;margin-bottom:4px;}
  .rule-item p{font-size:14px;color:var(--muted);line-height:1.7;}

  /* ---------- reviews ---------- */
  .review-grid{display:grid;grid-template-columns:1fr;gap:20px;}
  @media (min-width:768px){.review-grid{grid-template-columns:repeat(2,1fr);}}
  .review{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;
    box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column;gap:14px;
  }
  .review:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
  .review-head{display:flex;align-items:center;gap:12px;}
  .avatar{
    width:42px;height:42px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:700;font-size:15px;
    background:linear-gradient(135deg,#0E5A46,#17916F);
  }
  .review-name{font-size:15px;font-weight:600;line-height:1.3;}
  .review-date{font-size:12px;color:var(--muted);}
  .stars{margin-left:auto;color:var(--warm);font-size:13px;letter-spacing:2px;white-space:nowrap;}
  .review p{font-size:15px;color:#22332E;line-height:1.8;}

  /* ---------- CTA panel ---------- */
  .cta-panel{
    background:var(--brand-900);color:#fff;border-radius:var(--r-lg);border:1px solid rgba(255,255,255,.08);
    padding:34px 22px;
  }
  @media (min-width:768px){.cta-panel{padding:48px;}}
  .cta-panel h2{font-size:24px;line-height:1.3;font-weight:700;}
  @media (min-width:768px){.cta-panel h2{font-size:28px;}}
  .cta-panel p{margin-top:14px;font-size:15px;color:rgba(255,255,255,.74);max-width:640px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .cta-note{margin-top:18px;font-size:13px;color:rgba(255,255,255,.6);}
  .cta-note strong{color:var(--accent);font-weight:600;}
  @media (max-width:639px){
    .cta-actions{flex-direction:column;}
    .cta-actions .btn{width:100%;}
  }

  /* ---------- footer ---------- */
  .site-footer{background:var(--brand-900);color:#fff;margin-top:80px;padding:56px 0 24px;}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
  @media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;}}
  .footer-brand{display:flex;align-items:center;gap:10px;}
  .footer-brand .brand-mark{background:rgba(255,255,255,.08);color:var(--accent);border:1px solid rgba(255,255,255,.12);}
  .footer-brand strong{font-size:16px;}
  .footer-desc{font-size:13px;line-height:1.8;color:rgba(255,255,255,.72);margin-top:12px;}
  .footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
  .footer-col ul{display:grid;gap:10px;}
  .footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s;}
  .footer-col a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:3px;}
  .footer-form{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px;}
  .footer-form input{
    flex:1 1 180px;height:46px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.18);
    background:rgba(255,255,255,.06);color:#fff;padding:0 14px;transition:border-color .18s;
  }
  .footer-form input::placeholder{color:rgba(255,255,255,.5);}
  .footer-form input:focus{outline:2px solid var(--accent);outline-offset:2px;border-color:transparent;}
  .footer-form button{
    height:46px;padding:0 18px;border-radius:var(--r-sm);border:0;background:var(--accent);
    color:var(--brand-900);font-weight:600;cursor:pointer;transition:filter .18s,transform .18s;
  }
  .footer-form button:hover{filter:brightness(1.06);transform:translateY(-1px);}
  .footer-hint{margin-top:10px;font-size:12px;color:rgba(255,255,255,.55);}
  .footer-bottom{
    margin-top:36px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55);
  }

/* roulang page: category3 */
:root{
  --brand-900:#072A22;
  --brand-700:#0E5A46;
  --brand-500:#17916F;
  --brand-050:#EDF6F1;
  --accent:#BEF264;
  --warm:#FF7A45;
  --canvas:#F6F5F0;
  --surface:#FFFFFF;
  --line:#E4E2DA;
  --ink:#10201C;
  --muted:#5B6B66;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:18px;
  --r-xl:24px;
  --sh-1:0 1px 2px rgba(7,42,34,.06);
  --sh-2:0 14px 30px -14px rgba(7,42,34,.20);
  --sp-1:8px; --sp-2:12px; --sp-3:16px; --sp-4:24px; --sp-5:32px; --sp-6:48px; --sp-7:64px; --sp-8:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"Noto Sans SC","Inter",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--canvas);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
a:hover{color:var(--brand-900);}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:-0.01em;}
p{margin:0;}
button{font-family:inherit;cursor:pointer;}
input,button{font-size:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  padding:12px 0 0;
  background:linear-gradient(180deg,rgba(246,245,240,.96),rgba(246,245,240,.72) 70%,rgba(246,245,240,0));
}
.nav-shell{
  display:flex;
  align-items:center;
  gap:var(--sp-4);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:10px 14px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink);
}
.brand-mark{
  width:38px;height:38px;
  border-radius:var(--r-sm);
  background:var(--brand-900);
  color:var(--accent);
  display:grid;place-items:center;
  font-family:"Inter",sans-serif;
  font-weight:800;
  font-size:14px;
  letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:16px;font-weight:800;color:var(--brand-900);}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);}

.nav-cards{
  display:flex;
  align-items:center;
  gap:var(--sp-1);
  margin-left:auto;
}
.nav-card{
  display:flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:6px 12px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:13px;
  font-weight:600;
  color:var(--ink);
  white-space:nowrap;
}
.nav-card i{
  width:26px;height:26px;
  border-radius:8px;
  background:var(--brand-050);
  color:var(--brand-700);
  display:grid;place-items:center;
  font-style:normal;
  font-size:12px;
  font-weight:700;
  transition:background-color .2s ease,color .2s ease;
}
.nav-card:hover{background:var(--brand-050);border-color:var(--line);}
.nav-card:hover i{background:var(--accent);color:var(--brand-900);}
.nav-card.is-active{background:var(--brand-050);border-color:rgba(23,145,111,.32);color:var(--brand-700);}
.nav-card.is-active i{background:var(--brand-700);color:#fff;}

.nav-actions{display:flex;align-items:center;gap:10px;margin-left:12px;}
.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  height:44px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--brand-500);
  background:var(--surface);
  color:var(--brand-700);
  font-weight:600;
  font-size:14px;
}
.nav-toggle:hover{background:var(--brand-050);border-color:var(--brand-700);}
.nav-drawer{display:none;}
.nav-drawer.is-open{
  display:flex;
  flex-direction:column;
  gap:6px;
  margin-top:10px;
  padding:12px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
}
.nav-drawer .nav-card{width:100%;justify-content:flex-start;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 22px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{
  background:var(--accent);
  color:var(--brand-900);
  box-shadow:0 6px 16px -10px rgba(7,42,34,.45);
}
.btn-primary:hover{background:#cbf778;transform:translateY(-1px);box-shadow:var(--sh-2);color:var(--brand-900);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:var(--surface);
  border-color:var(--brand-500);
  color:var(--brand-700);
}
.btn-ghost:hover{background:var(--brand-050);border-color:var(--brand-700);color:var(--brand-700);transform:translateY(-1px);}
.btn-outline-light{
  background:transparent;
  border-color:rgba(255,255,255,.42);
  color:#fff;
}
.btn-outline-light:hover{background:rgba(255,255,255,.10);border-color:#fff;color:#fff;transform:translateY(-1px);}
.btn-sm{min-height:44px;padding:0 18px;font-size:14px;}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:700;
  color:var(--brand-700);
  border-bottom:1px solid rgba(14,90,70,.4);
  padding-bottom:2px;
}
.btn-link:hover{color:var(--brand-900);border-color:var(--accent);}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:24px 0 0;
  font-size:13px;
  color:var(--muted);
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand-700);}
.crumb .sep{opacity:.55;}
.crumb .current{color:var(--brand-700);font-weight:600;}

/* ============ 通用板块 ============ */
.section{padding:var(--sp-7) 0 0;}
.section-head{max-width:760px;margin-bottom:var(--sp-5);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--brand-500);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;
  background:var(--accent);
  border-radius:2px;
}
.section-title{font-size:28px;font-weight:700;margin-top:10px;color:var(--brand-900);}
.section-sub{margin-top:12px;color:var(--muted);font-size:15px;}

/* ============ Hero ============ */
.hero{padding:32px 0 0;}
.hero-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:var(--sp-6);
  align-items:center;
}
.hero h1{
  font-size:40px;
  line-height:1.22;
  font-weight:800;
  color:var(--brand-900);
  letter-spacing:-.015em;
}
.hero h1 .hl{
  position:relative;
  white-space:nowrap;
}
.hero h1 .hl::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:4px;
  height:10px;
  background:var(--accent);
  opacity:.5;
  border-radius:4px;
  z-index:-1;
}
.hero-sub{
  margin-top:16px;
  font-size:17px;
  color:var(--muted);
  max-width:560px;
}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--surface);
  font-size:13px;
  color:var(--muted);
  box-shadow:var(--sh-1);
}
.badge strong{color:var(--brand-700);font-weight:700;font-family:"Inter","Noto Sans SC",sans-serif;}
.badge.is-warm{border-color:rgba(255,122,69,.35);color:#b8491f;}
.badge.is-warm strong{color:var(--warm);}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:26px;}
.hero-note{
  margin-top:16px;
  font-size:13px;
  color:var(--muted);
  display:flex;
  align-items:center;
  gap:8px;
}
.hero-note::before{
  content:"";
  width:8px;height:8px;border-radius:50%;
  background:var(--brand-500);
  flex:0 0 auto;
}
.hero-media{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--sh-2);
  padding:14px;
}
.hero-media img{
  width:100%;
  border-radius:var(--r-md);
  aspect-ratio:4/3;
  object-fit:cover;
}
.hero-media-badge{
  position:absolute;
  left:28px;
  bottom:28px;
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 16px;
  border-radius:12px;
  background:var(--brand-900);
  color:#fff;
  font-size:13px;
  font-weight:600;
  border:1px solid rgba(255,255,255,.10);
}
.hero-media-badge span{color:var(--accent);font-family:"Inter",sans-serif;font-weight:700;}

/* 视觉带 */
.visual-band{
  margin-top:var(--sp-7);
  border-radius:var(--r-xl);
  overflow:hidden;
  position:relative;
  min-height:220px;
  display:flex;
  align-items:center;
  background-image:linear-gradient(100deg,rgba(7,42,34,.90),rgba(7,42,34,.55) 55%,rgba(7,42,34,.28)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  border:1px solid rgba(255,255,255,.08);
}
.visual-band-inner{padding:36px 40px;max-width:720px;}
.visual-band h2{color:#fff;font-size:24px;}
.visual-band p{color:rgba(255,255,255,.78);margin-top:10px;font-size:15px;}
.visual-band .band-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.visual-band .band-badge{
  padding:7px 14px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.22);
  color:#fff;
  font-size:13px;
}

/* ============ 平台要求卡 ============ */
.platform-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--sp-4);
}
.platform-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:24px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.platform-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.platform-head{display:flex;align-items:center;gap:12px;margin-bottom:6px;}
.platform-icon{
  width:40px;height:40px;
  border-radius:999px;
  background:var(--brand-050);
  color:var(--brand-700);
  display:grid;place-items:center;
  font-size:14px;
  font-weight:800;
}
.platform-card h3{font-size:18px;}
.kv-list{margin-top:16px;}
.kv-row{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  padding:11px 0;
  border-bottom:1px dashed var(--line);
}
.kv-row:last-child{border-bottom:0;}
.kv-row dt{font-size:12px;color:var(--muted);flex:0 0 auto;}
.kv-row dd{margin:0;font-size:15px;color:var(--ink);font-weight:600;text-align:right;}

/* ============ 时间线 ============ */
.timeline{margin-top:var(--sp-2);}
.tl-item{
  position:relative;
  padding-left:64px;
  padding-bottom:22px;
}
.tl-item::before{
  content:"";
  position:absolute;
  left:19px;
  top:44px;
  bottom:0;
  width:2px;
  background:linear-gradient(180deg,rgba(23,145,111,.55),rgba(23,145,111,.12));
}
.tl-item:last-child{padding-bottom:0;}
.tl-item:last-child::before{display:none;}
.tl-node{
  position:absolute;
  left:0;top:0;
  width:40px;height:40px;
  border-radius:999px;
  background:var(--surface);
  border:2px solid var(--brand-500);
  color:var(--brand-700);
  display:grid;place-items:center;
  font-family:"Inter",sans-serif;
  font-weight:800;
  font-size:15px;
}
.tl-item.is-key .tl-node{background:var(--brand-900);border-color:var(--brand-900);color:var(--accent);}
.tl-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:22px 24px;
  transition:box-shadow .2s ease,transform .2s ease;
}
.tl-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.tl-card h3{font-size:18px;color:var(--brand-900);}
.tl-card p{margin-top:10px;color:var(--muted);font-size:15px;}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:5px 12px;
  border-radius:999px;
  background:var(--brand-050);
  color:var(--brand-700);
  font-size:12px;
  font-weight:600;
}
.tag.is-warm{background:rgba(255,122,69,.12);color:#b8491f;}

/* ============ 对比卡 ============ */
.compare-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--sp-4);
}
.compare-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:26px 24px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.compare-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.compare-card.is-pick{border-color:rgba(23,145,111,.45);}
.compare-card.is-pick::before{
  content:"";
  position:absolute;
  left:24px;right:24px;top:0;
  height:4px;
  border-radius:0 0 4px 4px;
  background:var(--accent);
}
.compare-card h3{font-size:18px;color:var(--brand-900);}
.compare-card .cmp-label{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:700;
  color:var(--brand-500);
  margin-bottom:10px;
}
.compare-card p{margin-top:12px;font-size:14px;color:var(--muted);}
.compare-list{margin-top:16px;}
.compare-list li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  padding-bottom:10px;
}
.compare-list li:last-child{padding-bottom:0;}
.compare-list li::before{
  content:"";
  position:absolute;
  left:0;top:10px;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--accent);
}

/* ============ 报错处置卡 ============ */
.issue-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:var(--sp-4);
}
.issue-card{
  display:flex;
  gap:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:24px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.issue-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.issue-icon{
  flex:0 0 auto;
  width:42px;height:42px;
  border-radius:var(--r-sm);
  background:rgba(255,122,69,.12);
  color:#b8491f;
  display:grid;place-items:center;
  font-size:16px;
  font-weight:800;
}
.issue-card h3{font-size:17px;color:var(--brand-900);}
.issue-card p{margin-top:8px;font-size:14.5px;color:var(--muted);}
.issue-fix{
  margin-top:12px;
  padding-top:12px;
  border-top:1px dashed var(--line);
  font-size:14px;
  color:var(--brand-700);
  font-weight:600;
}

/* ============ 图片图文块 ============ */
.split{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:var(--sp-6);
  align-items:center;
  margin-top:var(--sp-6);
}
.split-media{
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  background:var(--surface);
}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.split-copy h3{font-size:22px;color:var(--brand-900);}
.split-copy p{margin-top:14px;color:var(--muted);font-size:15.5px;}
.check-list{margin-top:18px;}
.check-list li{
  position:relative;
  padding-left:26px;
  padding-bottom:10px;
  font-size:15px;
  color:var(--ink);
}
.check-list li::before{
  content:"✓";
  position:absolute;
  left:0;top:0;
  color:var(--brand-500);
  font-weight:800;
}

/* ============ 深色下载面板 ============ */
.cta-panel{
  margin-top:var(--sp-7);
  background:var(--brand-900);
  border-radius:var(--r-xl);
  padding:48px 44px;
  border:1px solid rgba(255,255,255,.08);
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:var(--sp-6);
  align-items:center;
  position:relative;
  overflow:hidden;
}
.cta-panel::after{
  content:"";
  position:absolute;
  right:-80px;top:-90px;
  width:320px;height:320px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(190,242,100,.20),rgba(190,242,100,0) 68%);
  pointer-events:none;
}
.cta-panel h2{color:#fff;font-size:28px;position:relative;z-index:1;}
.cta-panel p{color:rgba(255,255,255,.74);margin-top:14px;font-size:15.5px;position:relative;z-index:1;}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  position:relative;
  z-index:1;
  justify-content:flex-end;
}
.cta-note{
  grid-column:1/-1;
  margin-top:6px;
  font-size:13px;
  color:rgba(255,255,255,.58);
  position:relative;
  z-index:1;
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:var(--sp-8);
  background:var(--brand-900);
  color:#fff;
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:var(--sp-5);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.10);color:var(--accent);}
.footer-brand strong{font-size:17px;font-weight:800;color:#fff;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:#fff;border-bottom:1px solid var(--accent);}
.footer-desc{font-size:14px;color:rgba(255,255,255,.66);line-height:1.8;}
.footer-form{display:flex;gap:10px;flex-wrap:wrap;}
.footer-form input{
  flex:1 1 160px;
  height:46px;
  padding:0 14px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);
  color:#fff;
  font-size:14px;
}
.footer-form input::placeholder{color:rgba(255,255,255,.45);}
.footer-form input:focus{outline:2px solid var(--accent);outline-offset:2px;border-color:transparent;}
.footer-form button{
  height:46px;
  padding:0 20px;
  border-radius:var(--r-sm);
  border:0;
  background:var(--accent);
  color:var(--brand-900);
  font-weight:700;
  transition:background-color .2s ease,transform .18s ease;
}
.footer-form button:hover{background:#cbf778;transform:translateY(-1px);}
.footer-hint{margin-top:12px;font-size:13px;color:rgba(255,255,255,.5);}
.footer-bottom{
  margin-top:var(--sp-6);
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:var(--sp-5);}
  .hero h1{font-size:34px;}
  .platform-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .compare-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-panel{grid-template-columns:1fr;padding:40px 32px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .split{grid-template-columns:1fr;gap:var(--sp-4);}
}
@media (max-width:860px){
  .nav-cards{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-shell{gap:12px;padding:10px 12px;}
  .nav-actions{margin-left:auto;}
  .nav-cta{display:none;}
}
@media (max-width:640px){
  .section{padding-top:44px;}
  .hero{padding-top:20px;}
  .hero h1{font-size:28px;line-height:1.3;}
  .section-title{font-size:23px;}
  .platform-grid{grid-template-columns:1fr;}
  .compare-grid{grid-template-columns:1fr;}
  .issue-grid{grid-template-columns:1fr;}
  .visual-band-inner{padding:26px 22px;}
  .visual-band h2{font-size:20px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-actions .btn-link{justify-content:center;}
  .cta-panel{padding:32px 22px;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .tl-item{padding-left:52px;}
  .tl-node{width:34px;height:34px;font-size:13px;}
  .tl-item::before{left:16px;}
}