/* roulang page: index */
:root{
  --primary:#0F5C55;
  --primary-dark:#0A3F3A;
  --primary-deep:#082F2B;
  --primary-light:#E6F1EF;
  --accent:#E1A23C;
  --accent-dark:#C88A26;
  --accent-light:#FBF1DE;
  --danger:#C0452F;
  --bg:#F7F5F0;
  --card:#FFFFFF;
  --text:#23302E;
  --muted:#5C6B68;
  --faint:#8A9694;
  --border:#DFE3E0;
  --shadow-sm:0 1px 2px rgba(15,92,85,.06);
  --shadow-md:0 6px 18px rgba(15,92,85,.08);
  --shadow-lg:0 14px 36px rgba(15,92,85,.10);
  --r-card:14px;
  --r-img:10px;
  --r-btn:10px;
  --r-input:10px;
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--primary-dark)}
a:visited{color:var(--primary)}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input,textarea{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid rgba(15,92,85,.35);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace}

/* ---------- header / nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:64px;
  background:transparent;
  transition:background .25s ease-out,box-shadow .25s ease-out,border-color .25s ease-out;
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-sm);
}
.nav-wrap{display:grid;grid-template-columns:minmax(0,58fr) minmax(0,42fr);align-items:center;height:64px;gap:24px}
.nav-left{display:flex;align-items:center;gap:30px;min-width:0}
.nav-right{display:flex;align-items:center;justify-content:flex-end;gap:14px;min-width:0}
.logo{display:flex;flex-direction:column;line-height:1.15;flex:none}
.logo-main{font-size:17px;font-weight:700;color:var(--primary-dark);letter-spacing:-.01em;white-space:nowrap}
.logo-sub{font-size:10.5px;color:var(--faint);letter-spacing:.06em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:26px;min-width:0}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--text);
  padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease-out;
}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--primary);font-weight:600}
.nav-search{
  display:flex;align-items:center;gap:8px;
  border:1px solid var(--border);background:rgba(255,255,255,.85);
  border-radius:999px;padding:7px 14px;width:170px;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(15,92,85,.12)}
.nav-search svg{flex:none;color:var(--faint)}
.nav-search input{border:0;background:transparent;outline:none;font-size:13.5px;width:100%;color:var(--text)}
.nav-search input::placeholder{color:var(--faint)}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--border);align-items:center;justify-content:center;background:#fff}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--primary-dark);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:17px;height:2px;background:var(--primary-dark);border-radius:2px}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 24px;border-radius:var(--r-btn);
  border:1px solid transparent;cursor:pointer;
  box-shadow:var(--shadow-sm);
  transition:background .2s ease-out,color .2s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .2s ease-out;
}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn:active{transform:translateY(1px);box-shadow:var(--shadow-sm)}
.btn-accent{background:var(--accent);color:#2B1D03}
.btn-accent:hover{background:var(--accent-dark);color:#241703}
.btn-primary{background:var(--primary);color:#F2F6F5}
.btn-primary:hover{background:var(--primary-dark);color:#fff}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary);box-shadow:none}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark)}
.btn-ghost-light{background:transparent;border-color:rgba(242,246,245,.55);color:#F2F6F5;box-shadow:none}
.btn-ghost-light:hover{background:rgba(242,246,245,.12);color:#fff;border-color:#F2F6F5}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:999px}
.btn-lg{padding:16px 30px;font-size:16px}
.btn-block{width:100%}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none}

/* ---------- badges & tags ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:999px;font-size:12.5px;font-weight:600;
  padding:5px 12px;background:var(--primary-light);color:var(--primary-dark);
  white-space:nowrap;
}
.badge-accent{background:var(--accent-light);color:#8A5C10}
.badge-outline{background:transparent;border:1px solid var(--border);color:var(--muted);font-weight:500}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:112px 0 78px;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,58fr) minmax(0,42fr);gap:24px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--primary);background:var(--primary-light);border-radius:999px;padding:6px 14px}
.hero h1{
  font-size:48px;line-height:1.22;font-weight:700;letter-spacing:-.01em;
  margin:20px 0 0;color:var(--primary-dark);
}
.hero h1 em{font-style:normal;color:var(--primary);position:relative}
.hero-sub{font-size:17.5px;line-height:1.7;color:var(--muted);margin-top:18px;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-trust{margin-top:30px;padding-top:20px;border-top:1px solid var(--border);display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.hero-trust .label{font-size:13px;color:var(--faint)}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--shadow-lg);background:linear-gradient(160deg,var(--primary),var(--primary-dark))}
.hero-float{
  position:absolute;right:-10px;bottom:26px;
  background:rgba(255,255,255,.94);
  border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow-md);padding:14px 18px;min-width:168px;
}
.hero-float strong{display:block;font-size:15px;color:var(--primary-dark)}
.hero-float span{display:block;font-size:12.5px;color:var(--faint);margin-top:3px}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section-alt{background:#FFFFFF}
.section-dark{background:linear-gradient(160deg,var(--primary),var(--primary-dark));color:#F2F6F5;position:relative;overflow:hidden}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.sec-head h2{font-size:28px;line-height:1.35;font-weight:700;color:var(--primary-dark);letter-spacing:-.01em}
.sec-head p{font-size:15.5px;color:var(--muted);margin-top:12px;max-width:620px}
.sec-no{display:block;font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.14em;margin-bottom:10px}
.sec-more{font-size:14.5px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.sec-more:hover{gap:10px}

/* ---------- value (asymmetric) ---------- */
.value-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:center}
.value-figure img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--shadow-md)}
.value-list li{padding:22px 0;border-top:1px solid var(--border);display:grid;grid-template-columns:52px 1fr;gap:18px}
.value-list li:last-child{border-bottom:1px solid var(--border)}
.value-list .idx{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.08em;padding-top:5px}
.value-list h3{font-size:18px;font-weight:600;color:var(--primary-dark)}
.value-list p{font-size:15px;line-height:1.8;color:var(--muted);margin-top:8px}

/* ---------- screenshots carousel ---------- */
.shots-wrap{position:relative}
.shots{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 12px;scrollbar-width:none;-ms-overflow-style:none;
}
.shots::-webkit-scrollbar{display:none}
.shot{flex:0 0 46%;scroll-snap-align:start}
.shot img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--shadow-md);background:linear-gradient(160deg,var(--primary),var(--primary-dark))}
.shot figcaption{font-size:14px;color:var(--muted);margin-top:12px}
.shot-nav{display:flex;align-items:center;gap:10px;margin-top:22px}
.shot-btn{
  width:42px;height:42px;border-radius:50%;background:#fff;border:1px solid var(--border);
  display:inline-flex;align-items:center;justify-content:center;color:var(--primary);
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.shot-btn:hover{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:var(--shadow-md)}
.shot-track{flex:1;height:4px;background:#E3E6E3;border-radius:999px;overflow:hidden;margin-left:12px}
.shot-track i{display:block;height:100%;width:28%;background:var(--primary);border-radius:999px;transition:transform .28s ease-out}

/* ---------- spec card ---------- */
.spec{border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;background:#fff;box-shadow:var(--shadow-sm)}
.spec-row{display:grid;grid-template-columns:220px 1fr;border-top:1px solid var(--border)}
.spec-row:first-child{border-top:0}
.spec-row:nth-child(even){background:rgba(15,92,85,.02)}
.spec-row dt{padding:18px 22px;font-size:13.5px;color:var(--muted);font-weight:500}
.spec-row dd{padding:18px 22px;font-size:15px;color:var(--text);margin:0;border-left:1px solid var(--border)}

/* ---------- rank list ---------- */
.rank-list li{
  display:flex;align-items:center;gap:18px;padding:16px 0;border-bottom:1px solid var(--border);
  transition:transform .18s ease-out;
}
.rank-list li:last-child{border-bottom:0}
.rank-list li:hover{transform:translateX(3px)}
.rank-no{
  flex:none;width:30px;height:30px;border-radius:9px;background:var(--primary-light);color:var(--primary-dark);
  font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
}
.rank-list li:nth-child(-n+3) .rank-no{background:var(--accent);color:#2B1D03}
.rank-title{font-size:15.5px;font-weight:600;color:var(--text);flex:1;min-width:0}
.rank-title:hover{color:var(--primary)}
.rank-meta{font-size:13px;color:var(--faint);flex:none}

/* ---------- quotes wall ---------- */
.quotes{columns:3;column-gap:22px}
.quote{
  break-inside:avoid;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:22px;margin-bottom:22px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.quote:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.quote-head{display:flex;align-items:center;gap:12px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:none;background:var(--primary-light);color:var(--primary-dark);
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
}
.quote-name{font-size:15px;font-weight:600}
.stars{color:var(--accent);font-size:12.5px;letter-spacing:2px}
.quote p{font-size:14.5px;line-height:1.8;color:var(--muted);margin-top:14px}

/* ---------- dark download ---------- */
.download-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:center;position:relative;z-index:2}
.dark-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.11;z-index:1;
}
.section-dark h2{font-size:30px;font-weight:700;line-height:1.35;color:#fff}
.section-dark .lead{font-size:16px;color:rgba(242,246,245,.82);margin-top:14px;max-width:520px}
.dl-buttons{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.dl-btn{display:flex;flex-direction:column;align-items:flex-start;gap:3px;text-align:left;padding:13px 22px;border-radius:var(--r-btn)}
.dl-btn b{font-size:15px;font-weight:600}
.dl-btn small{font-size:11.5px;opacity:.72;letter-spacing:.02em}
.qr-card{
  background:#fff;border-radius:var(--r-card);padding:20px;text-align:center;
  box-shadow:var(--shadow-lg);max-width:236px;margin-left:auto;
}
.qr-card svg{width:100%;height:auto;display:block;border-radius:8px}
.qr-card span{display:block;font-size:12px;color:var(--faint);margin-top:12px;line-height:1.6}
.hash-line{
  font-size:12px;color:rgba(242,246,245,.5);margin-top:34px;position:relative;z-index:2;
  word-break:break-all;
}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-sm);color:var(--text);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);color:var(--text)}
.news-cover{position:relative;background:linear-gradient(160deg,var(--primary),var(--primary-dark))}
.news-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease-out}
.news-card:hover .news-cover img{transform:scale(1.03)}
.cover-fallback{display:block;width:100%;aspect-ratio:16/9;background:linear-gradient(160deg,var(--primary),var(--primary-dark))}
.badge-float{
  position:absolute;top:12px;left:12px;background:rgba(255,255,255,.94);color:var(--primary-dark);
  font-size:12px;font-weight:600;border-radius:999px;padding:4px 11px;
}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.news-body h3{font-size:18px;font-weight:600;line-height:1.5;color:var(--primary-dark);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:15px;line-height:1.8;color:var(--muted);margin-top:10px;flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--faint);margin-top:16px;padding-top:14px;border-top:1px solid var(--border)}
.news-meta .arrow{color:var(--primary);font-weight:700;transition:transform .2s ease-out}
.news-card:hover .news-meta .arrow{transform:translateX(4px)}
.empty-state{text-align:center;padding:56px 20px;border:1px dashed var(--border);border-radius:var(--r-card);background:#fff}
.empty-state .ic{width:44px;height:44px;margin:0 auto 14px;border-radius:50%;border:2px solid rgba(15,92,85,.4);display:flex;align-items:center;justify-content:center;color:var(--primary)}
.empty-state b{display:block;font-size:16px;color:var(--primary-dark)}
.empty-state span{display:block;font-size:13px;color:var(--faint);margin-top:6px}
.skeleton{background:#ECEDEA;border-radius:8px;position:relative;overflow:hidden}

/* ---------- faq ---------- */
.faq{max-width:800px;margin:0 auto}
.faq-item{border-top:1px solid var(--border)}
.faq-item:last-child{border-bottom:1px solid var(--border)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 4px;text-align:left;font-size:17px;font-weight:600;color:var(--primary-dark);
  transition:color .2s ease-out;
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--border);
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;color:var(--primary);
  transition:transform .24s ease-out,background .2s ease-out,color .2s ease-out;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff;border-color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a p{font-size:15px;line-height:1.85;color:var(--muted);padding:0 8px 22px}

/* ---------- footer ---------- */
.site-footer{background:var(--primary-deep);color:rgba(242,246,245,.82);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-grid h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-brand .logo-main{color:#fff;font-size:18px}
.footer-brand .logo-sub{color:rgba(242,246,245,.5)}
.footer-brand p{font-size:14px;line-height:1.8;margin-top:14px;max-width:280px}
.footer-links li{margin-bottom:10px}
.footer-links a{
  font-size:14px;color:rgba(242,246,245,.72);position:relative;display:inline-block;
  transition:color .2s ease-out;
}
.footer-links a::after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1px;background:#fff;transform:scaleX(0);transform-origin:left;transition:transform .22s ease-out}
.footer-links a:hover{color:#fff}
.footer-links a:hover::after{transform:scaleX(1)}
.footer-note{font-size:13.5px;line-height:1.8;color:rgba(242,246,245,.62)}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(242,246,245,.14);padding:20px 0;
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(242,246,245,.5);
}
.footer-bottom a{color:rgba(242,246,245,.6)}
.footer-bottom a:hover{color:#fff}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.4);opacity:0;visibility:hidden;transition:opacity .25s ease-out,visibility .25s;z-index:90}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;background:#fff;z-index:100;
  transform:translateX(102%);transition:transform .28s ease-out;padding:20px;overflow-y:auto;
  box-shadow:var(--shadow-lg);
}
.drawer.show{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--border)}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--border);font-size:18px;color:var(--muted);line-height:1}
.drawer-nav{margin-top:12px}
.drawer-nav a{display:block;padding:15px 4px;font-size:15.5px;font-weight:500;color:var(--text);border-bottom:1px solid var(--border);min-height:48px}
.drawer-nav a.active{color:var(--primary);font-weight:600}
.drawer-search{margin-top:20px;display:flex;align-items:center;gap:8px;border:1px solid var(--border);border-radius:var(--r-input);padding:12px 14px}
.drawer-search input{border:0;outline:none;width:100%;font-size:14px}
.drawer-cta{margin-top:22px}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero h1{font-size:42px}
  .value-grid{gap:40px}
  .download-grid{gap:40px}
}
@media (max-width:1023px){
  .nav-search{display:none}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-wrap{grid-template-columns:1fr auto}
  .nav-right{gap:10px}
  .hero{padding:96px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:38px}
  .hero-visual{max-width:520px}
  .value-grid{grid-template-columns:1fr}
  .value-figure img{aspect-ratio:16/10}
  .quotes{columns:2}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .download-grid{grid-template-columns:1fr;gap:34px}
  .qr-card{margin-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:60px 0}
  .hero h1{font-size:29px;line-height:1.32}
  .hero-sub{font-size:16px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .sec-head h2{font-size:23px}
  .shot{flex:0 0 86%}
  .shot-nav .shot-btn{display:none}
  .shot-track{margin-left:0}
  .spec-row{grid-template-columns:1fr}
  .spec-row dt{padding:14px 18px 0}
  .spec-row dd{padding:6px 18px 16px;border-left:0}
  .quotes{columns:1}
  .news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero-float{position:static;margin-top:16px;right:auto;bottom:auto;display:inline-block}
  .section-dark h2{font-size:23px}
  .faq-q{font-size:16px;padding:17px 2px}
  .hero-actions .btn{width:100%}
}
@media (max-width:420px){
  .hero h1{font-size:26px}
  .dl-buttons .btn{width:100%}
  .logo-main{font-size:15.5px}
}

/* roulang page: article */
:root{
  --primary:#0F5C55;--primary-deep:#0A3F3A;--primary-soft:#E6F1EF;
  --accent:#E1A23C;--accent-deep:#C9882A;--accent-soft:#FBF1DE;
  --danger:#C0452F;
  --bg:#F7F5F0;--card:#FFFFFF;--text:#23302E;--muted:#5C6B68;--faint:#8A9694;
  --border:#DFE3E0;--dark-text:#F2F6F5;
  --r-card:14px;--r-img:10px;--r-btn:10px;--r-input:10px;
  --sh-sm:0 1px 2px rgba(15,92,85,.06);
  --sh-md:0 6px 18px rgba(15,92,85,.08);
  --sh-lg:0 14px 36px rgba(15,92,85,.10);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;font-family:var(--font);background:var(--bg);color:var(--text);
  font-size:16px;line-height:1.8;letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:visited{color:var(--primary);}
a:hover{color:var(--accent-deep);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid rgba(15,92,85,.35);outline-offset:2px;border-radius:6px;}
.container{max-width:1180px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-tight{padding:56px 0;}
.section-head{margin-bottom:36px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  color:var(--primary);letter-spacing:.02em;margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:2px;height:14px;background:var(--primary);display:inline-block;}
.section-head h2{font-size:28px;line-height:38px;}
.section-head p{margin-top:10px;color:var(--muted);font-size:15px;max-width:660px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:13px;font-weight:600;background:var(--primary-soft);color:var(--primary);
  white-space:nowrap;
}
.badge-outline{background:transparent;border:1px solid var(--border);color:var(--muted);}
.badge-accent{background:var(--accent-soft);color:#8A5E12;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .2s ease-out;
  text-align:center;line-height:1.2;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:#0C4B45;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-sm);}
.btn-accent{background:var(--accent);color:#3A2A08;box-shadow:var(--sh-sm);}
.btn-accent:hover{background:var(--accent-deep);color:#2E2006;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-accent:active{transform:translateY(1px);box-shadow:var(--sh-sm);}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary);}
.btn-sm{padding:9px 16px;font-size:14px;}

/* header */
.site-header{
  position:sticky;top:0;z-index:70;height:64px;
  background:rgba(247,245,240,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;transition:background .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.site-header.is-stuck{background:rgba(255,255,255,.94);border-bottom-color:var(--border);box-shadow:var(--sh-sm);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:20px;}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0;}
.logo{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:17px;font-weight:700;color:var(--primary);letter-spacing:0;}
.logo-sub{font-size:11px;font-weight:500;color:var(--faint);letter-spacing:.02em;}
.site-footer .logo-main{color:var(--dark-text);}
.site-footer .logo-sub{color:rgba(242,246,245,.6);}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{
  font-size:15px;font-weight:500;color:var(--text);position:relative;padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--primary);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-links a:hover{color:var(--primary);}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);}
.nav-links a.active{color:var(--primary);font-weight:600;}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-search{
  display:flex;align-items:center;gap:8px;padding:7px 12px;border:1px solid var(--border);
  border-radius:var(--r-input);background:#fff;color:var(--faint);transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(15,92,85,.18);}
.nav-search input{
  border:0;outline:0;background:transparent;font-size:14px;width:132px;color:var(--text);font-family:inherit;
}
.nav-search input::placeholder{color:var(--faint);}
.nav-toggle{
  display:none;width:42px;height:38px;border:1px solid var(--border);border-radius:var(--r-btn);
  background:#fff;position:relative;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--primary);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--primary);transition:transform .2s ease;
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

/* breadcrumb + article head */
.crumb{padding:26px 0 0;font-size:13px;color:var(--faint);display:flex;flex-wrap:wrap;align-items:center;gap:6px;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:#C4CCC9;}
.crumb .current{color:var(--faint);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-head{padding:22px 0 30px;border-bottom:1px solid var(--border);}
.article-head h1{font-size:36px;line-height:1.35;margin-top:16px;max-width:900px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:13px;color:var(--muted);}
.article-meta .dot{color:#C4CCC9;}

/* layout */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start;padding:52px 0 8px;}
.article-body{max-width:800px;font-size:17px;line-height:1.9;color:var(--text);}
.article-body p{margin:0 0 1.7em;}
.article-body h2{font-size:24px;font-weight:600;margin:2.2em 0 .9em;padding-left:12px;position:relative;}
.article-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;background:var(--primary);border-radius:2px;}
.article-body h3{font-size:19px;font-weight:600;margin:1.7em 0 .7em;}
.article-body blockquote{
  margin:1.6em 0;padding:18px 20px;border-left:4px solid var(--accent);
  background:rgba(225,162,60,.06);color:#3D4A47;border-radius:0 var(--r-img) var(--r-img) 0;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:24px auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--faint);margin-top:10px;}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--accent-deep);}
.article-body ul,.article-body ol{margin:0 0 1.7em;padding-left:1.25em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:.4em 0;line-height:1.85;}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--border);padding:11px 14px;text-align:left;}
.article-body th{background:var(--primary-soft);color:var(--primary);font-weight:600;}
.article-body tbody tr:nth-child(even){background:rgba(15,92,85,.02);}
.article-body code{font-family:var(--mono);font-size:14px;background:var(--primary-soft);padding:2px 6px;border-radius:6px;color:#0B4A44;}
.article-body hr{border:0;border-top:1px solid var(--border);margin:2.2em 0;}
.notice-block{
  background:rgba(15,92,85,.06);border-left:3px solid var(--primary);border-radius:0 var(--r-img) var(--r-img) 0;
  padding:18px;margin:1.8em 0;font-size:16px;
}
.empty-state{text-align:center;padding:70px 24px;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-sm);}
.empty-state .ico{width:56px;height:56px;margin:0 auto 18px;border-radius:50%;background:var(--primary-soft);display:flex;align-items:center;justify-content:center;color:var(--primary);}
.empty-state h2{font-size:20px;font-weight:600;}
.empty-state p{margin-top:10px;color:var(--muted);font-size:15px;}
.empty-state .btn{margin-top:22px;}

/* sidebar */
.side-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-sm);}
.side-stack{display:flex;flex-direction:column;gap:20px;position:sticky;top:88px;}
.side-card h3{font-size:16px;font-weight:600;}
.side-card .side-desc{font-size:14px;color:var(--muted);margin-top:10px;}
.spec-list{margin-top:16px;border-top:1px solid var(--border);}
.spec-list .row{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--border);font-size:14px;}
.spec-list .row:nth-child(even){background:rgba(15,92,85,.02);}
.spec-list .k{color:var(--faint);}
.spec-list .v{color:var(--text);font-weight:600;font-family:var(--mono);font-size:13px;}
.side-cover{border-radius:var(--r-img);overflow:hidden;aspect-ratio:4/3;background:linear-gradient(160deg,var(--primary),var(--primary-deep));}
.side-cover img{width:100%;height:100%;object-fit:cover;}
.side-card .btn{width:100%;margin-top:16px;}
.side-links{display:flex;flex-direction:column;gap:10px;margin-top:14px;}
.side-links a{font-size:14px;color:var(--muted);display:flex;align-items:center;gap:8px;}
.side-links a:hover{color:var(--primary);}

/* back bar */
.back-bar{
  display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between;
  background:var(--primary-soft);border-radius:var(--r-card);padding:18px 22px;margin:44px 0 0;max-width:800px;
}
.back-bar .links{display:flex;gap:20px;font-size:15px;font-weight:600;}

/* faq */
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item:first-child{border-top:1px solid var(--border);}
.faq-q{
  width:100%;background:transparent;border:0;padding:20px 4px;display:flex;align-items:center;
  justify-content:space-between;gap:16px;cursor:pointer;text-align:left;font-size:17px;font-weight:600;color:var(--text);
}
.faq-q:hover{color:var(--primary);}
.faq-q .sign{font-size:20px;font-weight:400;color:var(--primary);transition:transform .24s ease;line-height:1;}
.faq-item.open .faq-q .sign{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-a p{padding:0 8px 20px;font-size:15px;line-height:1.85;color:var(--muted);}

/* related cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-sm);transition:transform .2s ease-out,box-shadow .2s ease-out;display:flex;flex-direction:column;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);}
.post-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(160deg,var(--primary),var(--primary-deep));}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.post-card:hover .post-cover img{transform:scale(1.03);}
.post-cover .badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);color:var(--primary);}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.post-body h3{font-size:18px;line-height:28px;font-weight:600;}
.post-body p{margin-top:10px;font-size:15px;line-height:1.75;color:var(--muted);}
.post-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--faint);}
.post-foot .arrow{color:var(--primary);transition:transform .2s ease;}
.post-card:hover .post-foot .arrow{transform:translateX(3px);}

/* cta */
.cta-band{
  background:linear-gradient(160deg,var(--primary),var(--primary-deep));position:relative;overflow:hidden;color:var(--dark-text);
}
.cta-band::before{
  content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.1;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center;padding:64px 0;}
.cta-inner h2{font-size:28px;line-height:38px;color:var(--dark-text);}
.cta-inner p{margin-top:14px;font-size:15px;color:rgba(242,246,245,.78);max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.btn-light{background:#fff;color:var(--primary);}
.btn-light:hover{background:#EDF3F1;color:var(--primary);transform:translateY(-1px);}
.btn-outline-light{background:transparent;border-color:rgba(242,246,245,.5);color:var(--dark-text);}
.btn-outline-light:hover{background:rgba(242,246,245,.12);color:#fff;}
.cta-aside{background:rgba(255,255,255,.08);border:1px solid rgba(242,246,245,.18);border-radius:var(--r-card);padding:22px;}
.cta-aside h3{font-size:16px;color:var(--dark-text);}
.cta-aside ul{margin-top:14px;display:flex;flex-direction:column;gap:10px;}
.cta-aside li{font-size:14px;color:rgba(242,246,245,.78);display:flex;gap:10px;align-items:flex-start;}
.cta-aside li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);margin-top:9px;flex:none;}

/* footer */
.site-footer{background:var(--primary-deep);color:var(--dark-text);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:36px;padding-bottom:44px;}
.footer-brand .logo-main{font-size:18px;}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(242,246,245,.72);max-width:320px;}
.site-footer h4{font-size:14px;font-weight:600;color:rgba(242,246,245,.92);margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:rgba(242,246,245,.7);border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease;}
.footer-links a:hover{color:#fff;border-bottom-color:#fff;}
.footer-note{font-size:13px;line-height:1.8;color:rgba(242,246,245,.62);}
.footer-bottom{
  border-top:1px solid rgba(242,246,245,.14);padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:12px 24px;
  font-size:13px;color:rgba(242,246,245,.55);
}

@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:36px;}
  .card-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .article-layout{grid-template-columns:1fr;padding-top:40px;}
  .side-stack{position:static;flex-direction:row;flex-wrap:wrap;gap:20px;}
  .side-stack .side-card{flex:1 1 260px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .cta-inner{grid-template-columns:1fr;padding:56px 0;}
  .article-head h1{font-size:30px;}
}
@media (max-width:900px){
  .nav-search{display:none;}
  .nav-toggle{display:flex;}
  .nav-links{
    position:fixed;top:64px;right:0;width:82%;max-width:340px;height:calc(100vh - 64px);
    background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:18px 22px;
    transform:translateX(105%);transition:transform .28s ease;box-shadow:var(--sh-lg);z-index:66;
    border-left:1px solid var(--border);overflow-y:auto;
  }
  .nav-links a{font-size:16px;padding:15px 0;border-bottom:1px solid var(--border);}
  .nav-links a::after{display:none;}
  body.nav-open .nav-links{transform:translateX(0);}
  body.nav-open::after{content:"";position:fixed;inset:64px 0 0 0;background:rgba(0,0,0,.4);z-index:60;}
  body.nav-open{overflow:hidden;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .container{padding:0 20px;}
  .section{padding:60px 0;}
  .section-head h2{font-size:22px;line-height:32px;}
  .article-head h1{font-size:26px;line-height:1.4;}
  .article-body{font-size:15px;line-height:1.85;}
  .article-body h2{font-size:20px;}
  .article-body h3{font-size:17px;}
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-inner h2{font-size:22px;line-height:32px;}
  .back-bar{flex-direction:column;align-items:flex-start;}
}
@media (max-width:420px){
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .nav-right .btn-sm{padding:8px 12px;font-size:13px;}
}

/* roulang page: category1 */
:root{
  --primary:#0F5C55;
  --primary-dark:#0A3F3A;
  --primary-light:#E6F1EF;
  --accent:#E1A23C;
  --accent-light:#FBF1DE;
  --danger:#C0452F;
  --bg:#F7F5F0;
  --card:#FFFFFF;
  --ink:#23302E;
  --ink-2:#5C6B68;
  --ink-3:#8A9694;
  --line:#DFE3E0;
  --on-dark:#F2F6F5;
  --sh-sm:0 1px 2px rgba(15,92,85,.06);
  --sh-md:0 6px 18px rgba(15,92,85,.08);
  --sh-lg:0 14px 36px rgba(15,92,85,.10);
  --r-card:14px;
  --r-img:10px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --max:1180px;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--primary);text-decoration:none;transition:color .2s ease-out,opacity .2s ease-out;}
a:hover{color:var(--accent);}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid rgba(15,92,85,.35);outline-offset:2px;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;line-height:1.32;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{max-width:var(--max);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{font-size:28px;margin-bottom:14px;}
.section-head p{color:var(--ink-2);font-size:15.5px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--primary);letter-spacing:.02em;margin-bottom:12px;}
.eyebrow::before{content:"";width:2px;height:14px;background:var(--primary);display:inline-block;}
.eyebrow .num{color:var(--accent);}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);font-size:12.5px;font-weight:600;line-height:1.5;}
.badge-outline{border:1px solid var(--line);color:var(--ink-2);background:#fff;}
.badge-accent{background:var(--accent-light);color:#8A5A12;}
.badge-soft{background:var(--primary-light);color:var(--primary);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background .2s ease-out,color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.btn:hover{transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn:active{transform:translateY(1px);box-shadow:var(--sh-sm);}
.btn-accent{background:var(--accent);color:#3A2606;}
.btn-accent:hover{background:#D3932C;color:#3A2606;}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:#0C4C46;color:#fff;}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary);}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary);}
.btn-light-ghost{background:transparent;border-color:rgba(242,246,245,.45);color:var(--on-dark);}
.btn-light-ghost:hover{background:rgba(242,246,245,.12);color:#fff;}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:64px;display:flex;align-items:center;
  background:transparent;
  transition:background .25s ease-out,box-shadow .25s ease-out,border-color .25s ease-out;
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-sm);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0;}
.logo{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:19px;font-weight:700;color:#fff;letter-spacing:-.01em;}
.logo-sub{font-size:10.5px;letter-spacing:.04em;color:rgba(242,246,245,.72);}
.site-header.is-stuck .logo-main{color:var(--primary);}
.site-header.is-stuck .logo-sub{color:var(--ink-3);}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:rgba(242,246,245,.86);padding:4px 0;
}
.nav-links a:hover{color:#fff;}
.nav-links a.active{color:#fff;}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--accent);border-radius:2px;
}
.site-header.is-stuck .nav-links a{color:var(--ink-2);}
.site-header.is-stuck .nav-links a:hover{color:var(--primary);}
.site-header.is-stuck .nav-links a.active{color:var(--primary);}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.14);border:1px solid rgba(242,246,245,.28);
  border-radius:var(--r-input);padding:8px 12px;color:rgba(242,246,245,.85);
}
.nav-search input{
  border:0;background:transparent;outline:none;color:#fff;font-size:14px;width:130px;
}
.nav-search input::placeholder{color:rgba(242,246,245,.62);}
.site-header.is-stuck .nav-search{background:#fff;border-color:var(--line);color:var(--ink-3);}
.site-header.is-stuck .nav-search input{color:var(--ink);}
.site-header.is-stuck .nav-search input::placeholder{color:var(--ink-3);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid rgba(242,246,245,.32);
  background:rgba(255,255,255,.1);position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;background:#fff;border-radius:2px;transform:translateX(-50%);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.site-header.is-stuck .nav-toggle{border-color:var(--line);background:#fff;}
.site-header.is-stuck .nav-toggle span,
.site-header.is-stuck .nav-toggle span::before,
.site-header.is-stuck .nav-toggle span::after{background:var(--primary);}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.4);opacity:0;visibility:hidden;
  transition:opacity .25s ease-out,visibility .25s ease-out;z-index:70;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;background:#fff;z-index:80;
  transform:translateX(100%);transition:transform .28s ease-out;
  padding:24px 22px;display:flex;flex-direction:column;gap:20px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-head .logo-main{color:var(--primary);}
.drawer-head .logo-sub{color:var(--ink-3);}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:18px;
}
.drawer-links{display:flex;flex-direction:column;}
.drawer-links a{
  padding:14px 2px;font-size:16px;font-weight:500;color:var(--ink);border-bottom:1px solid var(--line);min-height:48px;display:flex;align-items:center;
}
.drawer-links a.active{color:var(--primary);font-weight:600;}
.drawer-search{
  display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:var(--r-input);padding:12px 14px;color:var(--ink-3);
}
.drawer-search input{border:0;outline:none;flex:1;font-size:15px;color:var(--ink);background:transparent;}
.drawer-search input::placeholder{color:var(--ink-3);}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  padding:120px 0 72px;
  background-image:linear-gradient(160deg,rgba(10,63,58,.95),rgba(15,92,85,.78)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  color:var(--on-dark);
  overflow:hidden;
}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(242,246,245,.68);margin-bottom:18px;}
.breadcrumb a{color:rgba(242,246,245,.85);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:rgba(242,246,245,.62);}
.page-hero h1{font-size:42px;line-height:1.28;margin:16px 0 18px;color:#fff;}
.hero-lead{font-size:16.5px;line-height:1.9;color:rgba(242,246,245,.86);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-tags{margin-top:26px;display:flex;flex-wrap:wrap;gap:8px;}
.hero-tags .badge{border:1px solid rgba(242,246,245,.28);color:rgba(242,246,245,.78);background:rgba(255,255,255,.06);}
.hero-card{
  background:rgba(255,255,255,.96);border-radius:var(--r-card);box-shadow:var(--sh-lg);
  padding:24px;color:var(--ink);
}
.hero-card h3{font-size:17px;margin-bottom:4px;}
.hero-card .sub{font-size:13px;color:var(--ink-3);margin-bottom:16px;}
.mini-list{display:flex;flex-direction:column;}
.mini-list li{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14.5px;}
.mini-list li:last-child{border-bottom:0;}
.mini-list .k{color:var(--ink-2);}
.mini-list .v{font-weight:600;color:var(--ink);font-family:var(--mono);font-size:13.5px;}
.hero-cover{margin-top:18px;aspect-ratio:16/10;object-fit:cover;width:100%;}

/* ---------- spec ---------- */
.spec-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.spec-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden;}
.spec-card h3{font-size:17px;padding:20px 22px 14px;}
.spec-list{display:flex;flex-direction:column;}
.spec-row{display:grid;grid-template-columns:126px 1fr;gap:16px;padding:13px 22px;border-top:1px solid var(--line);font-size:14.5px;align-items:center;}
.spec-row:nth-child(even){background:rgba(230,241,239,.42);}
.spec-key{color:var(--ink-2);font-size:13.5px;}
.spec-val{font-weight:600;font-family:var(--mono);font-size:13.5px;word-break:break-all;}
.spec-val.plain{font-family:inherit;font-size:14.5px;font-weight:600;}

/* ---------- download block ---------- */
.dl-block{
  position:relative;color:var(--on-dark);border-radius:18px;overflow:hidden;
  background-image:linear-gradient(160deg,rgba(10,63,58,.96),rgba(15,92,85,.9)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  padding:44px;
  display:grid;grid-template-columns:1.35fr .65fr;gap:40px;align-items:center;
}
.dl-block h2{font-size:27px;color:#fff;margin-bottom:12px;}
.dl-block p{color:rgba(242,246,245,.82);font-size:15px;max-width:520px;}
.dl-buttons{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:26px;}
.dl-btn{
  display:flex;flex-direction:column;gap:2px;align-items:flex-start;
  padding:14px 18px;border-radius:var(--r-btn);border:1px solid rgba(242,246,245,.4);
  background:transparent;color:var(--on-dark);font-size:15px;font-weight:600;
  transition:background .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.dl-btn small{font-size:12px;font-weight:400;color:rgba(242,246,245,.66);font-family:var(--mono);}
.dl-btn:hover{background:rgba(255,255,255,.12);transform:translateY(-1px);}
.dl-btn.main{background:var(--accent);border-color:var(--accent);color:#3A2606;}
.dl-btn.main small{color:rgba(58,38,6,.7);}
.dl-btn.main:hover{background:#D3932C;}
.qr-card{background:#fff;border-radius:var(--r-card);padding:18px;text-align:center;box-shadow:var(--sh-md);}
.qr-box{width:132px;height:132px;margin:0 auto 12px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:8px;}
.qr-card p{font-size:12.5px;color:var(--ink-3);line-height:1.6;}
.hash-line{margin-top:26px;font-family:var(--mono);font-size:12px;color:rgba(242,246,245,.55);word-break:break-all;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{position:relative;padding-top:26px;}
.step::before{content:"";position:absolute;top:8px;left:0;right:-24px;height:1px;background:var(--line);}
.step:last-child::before{right:0;}
.step-num{
  position:absolute;top:-6px;left:0;background:var(--bg);padding-right:12px;
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.04em;
}
.step h3{font-size:18px;margin:12px 0 10px;}
.step p{font-size:15px;line-height:1.8;color:var(--ink-2);}

/* ---------- check list ---------- */
.check-panel{
  background:var(--primary-light);border-radius:var(--r-card);padding:32px;border-left:3px solid var(--primary);
}
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:24px;}
.check-item{background:#fff;border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-sm);}
.check-item h3{font-size:16.5px;margin-bottom:8px;}
.check-item p{font-size:14.5px;line-height:1.8;color:var(--ink-2);}
.check-item .tag{display:inline-block;font-family:var(--mono);font-size:12px;color:var(--primary);background:var(--primary-light);border-radius:var(--r-pill);padding:3px 10px;margin-bottom:10px;}

/* ---------- media feature ---------- */
.feature-split{display:grid;grid-template-columns:.92fr 1.08fr;gap:44px;align-items:center;}
.feature-split img{aspect-ratio:4/3;object-fit:cover;width:100%;box-shadow:var(--sh-md);}
.feature-list{display:flex;flex-direction:column;margin-top:8px;}
.feature-list li{padding:18px 0;border-top:1px solid var(--line);}
.feature-list li:last-child{border-bottom:1px solid var(--line);}
.feature-list h3{font-size:18px;margin-bottom:8px;display:flex;align-items:baseline;gap:10px;}
.feature-list h3 .no{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--accent);}
.feature-list p{font-size:15px;color:var(--ink-2);}

/* ---------- faq ---------- */
.faq{max-width:820px;margin:0 auto;}
.faq-item{border-top:1px solid var(--line);}
.faq-item:last-child{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:transparent;border:0;padding:20px 4px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:17px;font-weight:600;color:var(--ink);text-align:left;
}
.faq-q .icon{
  flex:0 0 22px;width:22px;height:22px;position:relative;transition:transform .24s ease-out;
}
.faq-q .icon::before,.faq-q .icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
  left:50%;top:50%;transform:translate(-50%,-50%);
}
.faq-q .icon::before{width:14px;height:2px;}
.faq-q .icon::after{width:2px;height:14px;}
.faq-item.open .faq-q .icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out;}
.faq-a p{padding:0 8px 22px;font-size:15px;line-height:1.85;color:var(--ink-2);}

/* ---------- cta bar ---------- */
.cta-bar{
  background:var(--primary-light);border-radius:var(--r-card);
  padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-bar h2{font-size:23px;margin-bottom:8px;}
.cta-bar p{font-size:15px;color:var(--ink-2);}

/* ---------- footer ---------- */
.site-footer{background:var(--primary-dark);color:var(--on-dark);padding:64px 0 28px;margin-top:88px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .logo-main{font-size:20px;color:#fff;display:block;}
.footer-brand .logo-sub{color:rgba(242,246,245,.62);font-size:10.5px;display:block;margin-top:2px;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(242,246,245,.7);margin-top:14px;}
.site-footer h4{font-size:14px;font-weight:600;color:rgba(242,246,245,.9);margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:rgba(242,246,245,.68);border-bottom:1px solid transparent;padding-bottom:1px;transition:color .2s ease-out,border-color .2s ease-out;}
.footer-links a:hover{color:#fff;border-bottom-color:rgba(255,255,255,.6);}
.footer-note{font-size:13.5px;line-height:1.8;color:rgba(242,246,245,.62);}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(242,246,245,.16);
  display:flex;flex-wrap:wrap;gap:10px 26px;font-size:13px;color:rgba(242,246,245,.55);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .page-hero h1{font-size:38px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:block;}
  .nav-right .btn-sm{display:none;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .page-hero{padding:104px 0 60px;}
  .spec-wrap{grid-template-columns:1fr;}
  .dl-block{grid-template-columns:1fr;padding:34px;}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px;}
  .step::before{right:0;}
  .check-grid{grid-template-columns:1fr 1fr;}
  .feature-split{grid-template-columns:1fr;gap:30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .section{padding:68px 0;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  body{font-size:15px;line-height:1.85;}
  .page-hero h1{font-size:28px;}
  .hero-lead{font-size:15.5px;}
  .section-head h2{font-size:22px;}
  .dl-block h2{font-size:22px;}
  .cta-bar{padding:28px 24px;}
  .cta-bar h2{font-size:20px;}
  .steps{grid-template-columns:1fr;}
  .step::before{display:none;}
  .step{padding-top:0;}
  .step-num{position:static;display:block;padding:0;margin-bottom:6px;}
  .check-grid{grid-template-columns:1fr;}
  .dl-buttons{grid-template-columns:1fr;}
  .spec-row{grid-template-columns:1fr;gap:4px;padding:14px 18px;}
  .check-panel{padding:24px 20px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .nav-right{gap:10px;}
  .logo-main{font-size:17px;}
}

/* roulang page: category2 */
:root{
  --primary:#0F5C55;
  --primary-deep:#0A3F3A;
  --primary-soft:#E6F1EF;
  --primary-soft-2:#F2F8F7;
  --accent:#E1A23C;
  --accent-soft:#FBF1DE;
  --danger:#C0452F;
  --bg:#F7F5F0;
  --card:#FFFFFF;
  --text:#23302E;
  --muted:#5C6B68;
  --faint:#8A9694;
  --border:#DFE3E0;
  --dark-text:#F2F6F5;
  --r-card:14px;
  --r-img:10px;
  --r-btn:10px;
  --r-input:10px;
  --sh-sm:0 1px 2px rgba(15,92,85,.06);
  --sh-md:0 6px 18px rgba(15,92,85,.08);
  --sh-lg:0 14px 36px rgba(15,92,85,.10);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
:focus-visible{outline:2px solid rgba(15,92,85,.38);outline-offset:2px;border-radius:4px;}

/* ---------- 通用容器与排版 ---------- */
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--white{background:#FFFFFF;}
.section--soft{background:var(--primary-soft-2);}
.sec-head{max-width:740px;margin-bottom:44px;}
.sec-eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--primary);margin-bottom:14px;}
.sec-eyebrow::before{content:"";width:2px;height:14px;background:var(--accent);border-radius:2px;}
.sec-title{font-size:28px;line-height:1.4;font-weight:700;letter-spacing:-.01em;}
.sec-desc{margin-top:14px;font-size:15.5px;line-height:1.85;color:var(--muted);}
.center{text-align:center;}
.center .sec-head{margin-left:auto;margin-right:auto;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1.4;
  border-radius:var(--r-btn);padding:12px 22px;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform .18s ease-out,background-color .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn-accent{background:var(--accent);color:#3A2A07;box-shadow:var(--sh-sm);}
.btn-accent:hover{background:#D2901F;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-accent:active{transform:translateY(0);box-shadow:var(--sh-sm);}
.btn-outline{border-color:var(--primary);color:var(--primary);background:transparent;}
.btn-outline:hover{background:var(--primary-soft);transform:translateY(-1px);box-shadow:var(--sh-sm);}
.btn-outline:active{transform:translateY(0);box-shadow:none;}
.btn-light{background:#FFFFFF;color:var(--primary-deep);box-shadow:var(--sh-sm);}
.btn-light:hover{background:#F2F6F5;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-line-light{border-color:rgba(242,246,245,.45);color:var(--dark-text);background:transparent;}
.btn-line-light:hover{background:rgba(242,246,245,.12);transform:translateY(-1px);}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:999px;}
.btn-lg{padding:14px 30px;font-size:16px;}

/* ---------- 徽章与标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:5px 12px;font-size:12.5px;font-weight:500;line-height:1.5;white-space:nowrap;}
.badge-solid{background:var(--primary-soft);color:var(--primary);}
.badge-accent{background:var(--accent-soft);color:#8A5A10;}
.badge-outline{border:1px solid var(--border);color:var(--muted);background:#FFFFFF;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:70;
  background:transparent;border-bottom:1px solid transparent;
  transition:background-color .24s ease-out,box-shadow .24s ease-out,border-color .24s ease-out;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom-color:var(--border);
  box-shadow:var(--sh-sm);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px;}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0;}
.logo{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:19px;font-weight:700;color:var(--primary);letter-spacing:-.01em;white-space:nowrap;}
.logo-sub{font-size:10.5px;color:var(--faint);letter-spacing:.02em;margin-top:2px;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links a{position:relative;font-size:15px;font-weight:500;color:var(--text);padding:4px 0;transition:color .18s ease-out;}
.nav-links a:hover{color:var(--primary);}
.nav-links a.active{color:var(--primary);font-weight:600;}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--primary);border-radius:2px;}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-search{display:flex;align-items:center;gap:8px;height:38px;padding:0 14px;background:#FFFFFF;border:1px solid var(--border);border-radius:999px;color:var(--faint);transition:border-color .18s ease-out,box-shadow .18s ease-out;}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(15,92,85,.16);}
.nav-search input{width:132px;border:0;outline:0;background:transparent;font-size:13.5px;color:var(--text);}
.nav-search input::placeholder{color:var(--faint);}
.nav-toggle{display:none;position:relative;width:40px;height:40px;border:1px solid var(--border);border-radius:10px;background:#FFFFFF;cursor:pointer;padding:0;}
.nav-toggle span{position:absolute;left:12px;right:12px;top:19px;height:2px;background:var(--text);border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;right:0;height:2px;background:var(--text);border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:80;opacity:0;visibility:hidden;transition:opacity .26s ease-out,visibility .26s ease-out;}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:360px;z-index:90;
  background:#FFFFFF;padding:22px;overflow-y:auto;
  display:flex;flex-direction:column;gap:6px;
  transform:translateX(100%);transition:transform .26s ease-out;
  box-shadow:-8px 0 30px rgba(10,63,58,.16);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:18px;border-bottom:1px solid var(--border);}
.drawer-close{width:36px;height:36px;border:1px solid var(--border);border-radius:10px;background:#FFFFFF;color:var(--muted);font-size:20px;line-height:1;cursor:pointer;padding:0;}
.drawer-close:hover{color:var(--primary);border-color:var(--primary);}
.drawer-nav{display:flex;flex-direction:column;margin:6px 0 18px;}
.drawer-nav a{display:flex;align-items:center;min-height:48px;font-size:16px;font-weight:500;color:var(--text);border-bottom:1px solid var(--border);transition:color .18s ease-out;}
.drawer-nav a:hover{color:var(--primary);}
.drawer-nav a.active{color:var(--primary);font-weight:600;}

/* ---------- 首屏 ---------- */
.hero{padding:128px 0 78px;background:linear-gradient(180deg,#F1F7F5 0%,var(--bg) 58%);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--faint);margin-bottom:22px;}
.breadcrumb a{color:var(--muted);transition:color .18s ease-out;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:#C6D1CE;}
.hero-grid{display:grid;grid-template-columns:1.38fr 1fr;gap:52px;align-items:center;}
.hero-title{font-size:42px;line-height:1.26;font-weight:700;letter-spacing:-.015em;}
.hero-title em{font-style:normal;color:var(--primary);}
.hero-sub{margin-top:20px;font-size:16.5px;line-height:1.85;color:var(--muted);max-width:540px;}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-meta{margin-top:26px;display:flex;flex-wrap:wrap;gap:9px;}
.hero-visual{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-lg);aspect-ratio:5/6;background:linear-gradient(160deg,var(--primary),var(--primary-deep));}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;left:18px;right:18px;bottom:18px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:rgba(255,255,255,.94);border-radius:12px;padding:13px 16px;
  box-shadow:var(--sh-md);
}
.hero-float strong{display:block;font-size:14px;font-weight:600;color:var(--primary-deep);}
.hero-float span{display:block;font-size:12px;color:var(--faint);font-family:var(--mono);margin-top:2px;}

/* ---------- 功能交替图文 ---------- */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.feature-row + .feature-row{margin-top:76px;}
.feature-row.is-rev .feature-media{order:2;}
.feature-media{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-md);aspect-ratio:16/11;background:linear-gradient(160deg,var(--primary),var(--primary-deep));}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease-out;}
.feature-media:hover img{transform:scale(1.03);}
.feature-index{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.08em;}
.feature-row h3{margin-top:12px;font-size:20px;line-height:1.5;font-weight:600;}
.feature-row p{margin-top:12px;font-size:15.5px;line-height:1.9;color:var(--muted);}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.check-list li{position:relative;padding-left:24px;font-size:14.5px;line-height:1.8;color:var(--muted);}
.check-list li::before{content:"";position:absolute;left:0;top:10px;width:12px;height:7px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg);border-radius:1px;}

/* ---------- 排行榜 ---------- */
.rank-panel{background:#FFFFFF;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden;}
.rank-item{display:flex;align-items:center;gap:18px;padding:20px 24px;border-bottom:1px solid var(--border);transition:background-color .18s ease-out;}
.rank-item:last-child{border-bottom:0;}
.rank-item:hover{background:var(--primary-soft-2);}
.rank-num{flex:0 0 auto;width:38px;font-family:var(--mono);font-size:17px;font-weight:700;color:var(--primary);}
.rank-body{flex:1 1 auto;min-width:0;}
.rank-body h4{font-size:16.5px;font-weight:600;line-height:1.5;}
.rank-body p{margin-top:5px;font-size:14px;line-height:1.7;color:var(--muted);}
.rank-item .badge{flex:0 0 auto;}

/* ---------- 技巧卡片 ---------- */
.tips-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.tip-card{background:#FFFFFF;border:1px solid var(--border);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-sm);transition:transform .2s ease-out,box-shadow .2s ease-out;}
.tip-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);}
.tip-num{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.08em;}
.tip-card h4{margin-top:10px;font-size:17px;font-weight:600;line-height:1.5;}
.tip-card p{margin-top:10px;font-size:15px;line-height:1.85;color:var(--muted);}

/* ---------- 设备卡片 ---------- */
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.device-card{background:#FFFFFF;border:1px solid var(--border);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-sm);transition:transform .2s ease-out,box-shadow .2s ease-out;}
.device-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);}
.device-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);margin-bottom:20px;}
.device-card h4{font-size:17px;font-weight:600;}
.device-card p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--muted);}
.device-card .tag-row{margin-top:16px;}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;margin:0 auto;border-top:1px solid var(--border);}
.faq-item{border-bottom:1px solid var(--border);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 8px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
  transition:color .18s ease-out;
}
.faq-q:hover{color:var(--primary);}
.faq-icon{position:relative;flex:0 0 auto;width:16px;height:16px;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .24s ease-out,opacity .24s ease-out;}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out;}
.faq-a-inner{padding:0 8px 24px;font-size:15px;line-height:1.9;color:var(--muted);}

/* ---------- 深色 CTA ---------- */
.cta-block{
  position:relative;border-radius:18px;overflow:hidden;
  background:linear-gradient(160deg,var(--primary) 0%,var(--primary-deep) 100%);
  padding:56px 48px;color:var(--dark-text);
}
.cta-block::after{
  content:"";position:absolute;inset:0;
  background:url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
  opacity:.12;
}
.cta-inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:30px;}
.cta-block h2{font-size:26px;line-height:1.45;font-weight:700;color:#fff;}
.cta-block p{margin-top:12px;font-size:15px;line-height:1.85;color:rgba(242,246,245,.78);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--primary-deep);color:var(--dark-text);padding:64px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:40px;}
.footer-brand .logo-main{color:#FFFFFF;font-size:18px;}
.footer-brand .logo-sub{color:rgba(242,246,245,.55);display:block;font-size:10.5px;margin-top:3px;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(242,246,245,.66);max-width:290px;}
.site-footer h4{font-size:14px;font-weight:600;color:#FFFFFF;margin-bottom:16px;letter-spacing:.02em;}
.footer-links li + li{margin-top:10px;}
.footer-links a{font-size:14px;color:rgba(242,246,245,.7);border-bottom:1px solid transparent;padding-bottom:2px;transition:color .18s ease-out,border-color .18s ease-out;}
.footer-links a:hover{color:#FFFFFF;border-bottom-color:rgba(255,255,255,.6);}
.footer-note{font-size:13.5px;line-height:1.85;color:rgba(242,246,245,.6);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(242,246,245,.14);
  display:flex;flex-wrap:wrap;gap:10px 28px;font-size:13px;color:rgba(242,246,245,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-title{font-size:38px;}
  .nav-left{gap:26px;}
  .nav-links{gap:20px;}
  .nav-search input{width:110px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:block;}
  .nav-search{display:none;}
  .nav-right .btn-accent{display:none;}
  .hero{padding:110px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:38px;}
  .hero-visual{aspect-ratio:16/11;max-height:420px;}
  .hero-sub{max-width:none;}
  .feature-row{grid-template-columns:1fr;gap:28px;}
  .feature-row.is-rev .feature-media{order:0;}
  .device-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:34px;}
  .cta-block{padding:44px 32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:60px 0;}
  .section--tight{padding:48px 0;}
  .sec-head{margin-bottom:32px;}
  .sec-title{font-size:22px;}
  .hero{padding:98px 0 52px;}
  .hero-title{font-size:28px;line-height:1.35;}
  .hero-sub{font-size:15.5px;}
  .hero-float{left:14px;right:14px;bottom:14px;padding:11px 14px;}
  .feature-row + .feature-row{margin-top:52px;}
  .feature-row h3{font-size:18px;}
  .tips-grid{grid-template-columns:1fr;}
  .device-grid{grid-template-columns:1fr;}
  .rank-item{flex-wrap:wrap;gap:12px;padding:18px;}
  .rank-num{width:30px;}
  .faq-q{font-size:16px;padding:18px 4px;}
  .faq-a-inner{padding:0 4px 20px;font-size:14.5px;}
  .cta-block{padding:34px 22px;border-radius:14px;}
  .cta-block h2{font-size:21px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:519px){
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .logo-main{font-size:17px;}
}

/* roulang page: category3 */
:root{
  --primary:#0F5C55;
  --primary-dark:#0A3F3A;
  --primary-light:#E6F1EF;
  --accent:#E1A23C;
  --accent-dark:#C88A26;
  --accent-light:#FBF1DE;
  --danger:#C0452F;
  --bg:#F7F5F0;
  --card:#FFFFFF;
  --text:#23302E;
  --text-2:#5C6B68;
  --text-3:#8A9694;
  --border:#DFE3E0;
  --on-dark:#F2F6F5;
  --shadow-sm:0 1px 2px rgba(15,92,85,.06);
  --shadow-md:0 6px 18px rgba(15,92,85,.08);
  --shadow-lg:0 14px 36px rgba(15,92,85,.10);
  --r-card:14px;
  --r-img:10px;
  --r-btn:10px;
  --r-input:10px;
  --container:1180px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--accent)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid rgba(15,92,85,.35);outline-offset:2px;border-radius:6px}
button{font:inherit;color:inherit;cursor:pointer}
input{font:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{list-style:none;padding:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .18s ease;
}
.btn-accent{background:var(--accent);color:#1F2A28;box-shadow:var(--shadow-sm)}
.btn-accent:hover{background:var(--accent-dark);color:#1F2A28;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-accent:active{transform:translateY(1px);box-shadow:var(--shadow-sm)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--shadow-sm)}
.btn-ghost{background:transparent;color:var(--on-dark);border-color:rgba(242,246,245,.42)}
.btn-ghost:hover{background:rgba(242,246,245,.12);color:#fff;border-color:rgba(242,246,245,.7)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-pill{border-radius:999px}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:13px;line-height:1.6;
  background:var(--primary-light);color:var(--primary);font-weight:500;
}
.badge-outline{background:transparent;border:1px solid var(--border);color:var(--text-2)}
.badge-accent{background:var(--accent-light);color:#8A5E12}
.badge-dark{background:rgba(255,255,255,.12);color:rgba(242,246,245,.92);transition:background .2s ease}
.badge-dark:hover{background:rgba(255,255,255,.22);color:#fff}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:64px;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.scrolled{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-sm);
}
.nav-wrap{height:64px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.nav-left{display:flex;align-items:center;gap:36px;min-width:0}
.nav-right{display:flex;align-items:center;gap:16px}
.logo{display:flex;flex-direction:column;line-height:1.15;flex:none}
.logo-main{font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--on-dark);transition:color .24s ease}
.logo-sub{font-size:11px;color:rgba(242,246,245,.62);transition:color .24s ease}
.site-header.scrolled .logo-main{color:var(--primary)}
.site-header.scrolled .logo-sub{color:var(--text-3)}
.logo:hover .logo-main{color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;
  color:rgba(242,246,245,.84);padding:4px 0;transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-links a:hover{color:#fff}
.nav-links a.active{color:#fff}
.nav-links a.active::after{transform:scaleX(1)}
.site-header.scrolled .nav-links a{color:var(--text-2)}
.site-header.scrolled .nav-links a:hover{color:var(--primary)}
.site-header.scrolled .nav-links a.active{color:var(--primary)}
.nav-search{
  display:flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);
  color:rgba(242,246,245,.8);
  transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.nav-search:focus-within{border-color:rgba(225,162,60,.75);box-shadow:0 0 0 3px rgba(225,162,60,.18)}
.nav-search input{
  width:150px;background:transparent;border:none;outline:none;
  font-size:14px;color:#fff;
}
.nav-search input::placeholder{color:rgba(242,246,245,.55)}
.site-header.scrolled .nav-search{background:#fff;border-color:var(--border);color:var(--text-3)}
.site-header.scrolled .nav-search input{color:var(--text)}
.site-header.scrolled .nav-search input::placeholder{color:var(--text-3)}
.nav-toggle{
  display:none;position:relative;width:40px;height:40px;
  border-radius:10px;border:1px solid rgba(255,255,255,.3);
  background:transparent;z-index:70;transition:border-color .2s ease,background .2s ease;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;
  background:var(--on-dark);transform:translateX(-50%);transition:transform .24s ease,background .24s ease,top .24s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";top:-6px}
.nav-toggle span::after{content:"";top:6px}
.site-header.scrolled .nav-toggle{border-color:var(--border)}
.site-header.scrolled .nav-toggle span,
.site-header.scrolled .nav-toggle span::before,
.site-header.scrolled .nav-toggle span::after{background:var(--primary)}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{top:0;transform:translateX(-50%) rotate(45deg);background:var(--text)}
body.nav-open .nav-toggle span::after{top:0;transform:translateX(-50%) rotate(-45deg);background:var(--text)}
.nav-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.4);
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:90;
}
body.nav-open .nav-mask{opacity:1;visibility:visible}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  padding:140px 0 76px;
  color:var(--on-dark);
  background-image:linear-gradient(152deg,rgba(10,63,58,.95) 0%,rgba(15,92,85,.86) 62%,rgba(20,105,96,.8) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(225,162,60,.22),transparent 68%);pointer-events:none;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(242,246,245,.62);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a{color:rgba(242,246,245,.78)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:rgba(242,246,245,.58)}
.hero-title{
  font-size:44px;line-height:1.24;font-weight:700;letter-spacing:-.01em;
  color:#fff;max-width:760px;
}
.hero-lead{
  margin-top:20px;max-width:700px;font-size:16px;line-height:1.9;
  color:rgba(242,246,245,.82);
}
.hero-search{
  margin-top:32px;max-width:640px;
  display:flex;align-items:center;gap:10px;
  padding:8px 8px 8px 18px;border-radius:12px;
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.26);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.hero-search:focus-within{
  border-color:rgba(225,162,60,.8);
  box-shadow:0 0 0 3px rgba(225,162,60,.2);
  background:rgba(255,255,255,.14);
}
.hero-search svg{flex:none;color:rgba(242,246,245,.7)}
.hero-search input{
  flex:1;min-width:0;background:transparent;border:none;outline:none;
  padding:11px 4px;font-size:15px;color:#fff;
}
.hero-search input::placeholder{color:rgba(242,246,245,.55)}
.hero-tags{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-alt{background:#fff}
.section-tight{padding:64px 0}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-num{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.06em;margin-bottom:12px;
}
.sec-num::before{content:"";width:2px;height:14px;background:var(--accent);display:inline-block}
.sec-title{font-size:28px;line-height:1.38;font-weight:700;color:var(--text)}
.sec-desc{margin-top:14px;font-size:15px;line-height:1.9;color:var(--text-2)}

/* ============ 快速判断 ============ */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.quick-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:28px 26px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.quick-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:#CFD9D5}
.quick-num{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.04em}
.quick-card h3{font-size:18px;line-height:1.5;font-weight:600;margin-top:12px}
.quick-card p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ============ FAQ 布局 ============ */
.faq-layout{display:grid;grid-template-columns:236px minmax(0,1fr);gap:48px;align-items:start}
.anchor-nav{
  position:sticky;top:92px;
  border-left:2px solid var(--border);padding-left:18px;
}
.anchor-nav h4{font-size:13px;font-weight:600;color:var(--text-3);letter-spacing:.04em;margin-bottom:14px}
.anchor-nav ul{display:flex;flex-direction:column;gap:2px}
.anchor-nav a{
  display:block;padding:8px 0 8px 12px;margin-left:-20px;
  font-size:14px;color:var(--text-2);border-left:2px solid transparent;
  transition:color .2s ease,border-color .2s ease,padding-left .2s ease;
}
.anchor-nav a:hover{color:var(--primary)}
.anchor-nav a.active{color:var(--primary);font-weight:600;border-left-color:var(--primary)}
.anchor-tip{
  margin-top:24px;padding:16px 18px;border-radius:var(--r-card);
  background:var(--accent-light);border:1px solid rgba(225,162,60,.28);
  font-size:13px;line-height:1.75;color:#7A5411;
}

.faq-section{margin-bottom:52px;scroll-margin-top:96px}
.faq-section:last-child{margin-bottom:0}
.group-title{
  display:flex;align-items:center;gap:12px;
  font-size:20px;font-weight:600;line-height:1.5;color:var(--text);
  padding-bottom:14px;border-bottom:1px solid var(--border);margin-bottom:4px;
}
.group-idx{
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--accent);
  background:var(--accent-light);border-radius:999px;padding:3px 10px;flex:none;
}
.acc-item{border-bottom:1px solid var(--border)}
.acc-head{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:20px 0;background:none;border:none;text-align:left;
  font-size:17px;font-weight:600;line-height:1.6;color:var(--text);
  transition:color .2s ease;
}
.acc-head:hover{color:var(--primary)}
.acc-icon{
  position:relative;flex:none;width:22px;height:22px;margin-top:3px;
  border-radius:50%;border:1px solid var(--border);
  transition:transform .24s ease,background .24s ease,border-color .24s ease;
}
.acc-icon::before,
.acc-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--primary);
  transform:translate(-50%,-50%);transition:background .24s ease;
}
.acc-icon::before{width:10px;height:1.6px}
.acc-icon::after{width:1.6px;height:10px}
.acc-item.open .acc-icon{transform:rotate(45deg);background:var(--primary);border-color:var(--primary)}
.acc-item.open .acc-icon::before,
.acc-item.open .acc-icon::after{background:#fff}
.acc-body{
  max-height:0;overflow:hidden;
  transition:max-height .24s ease;
}
.acc-inner{padding:0 8px 24px}
.acc-inner p{font-size:15px;line-height:1.85;color:var(--text-2)}
.acc-inner p + p{margin-top:12px}
.acc-inner .steps{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.acc-inner .steps li{
  position:relative;padding-left:22px;font-size:15px;line-height:1.8;color:var(--text-2);
}
.acc-inner .steps li::before{
  content:"";position:absolute;left:6px;top:11px;width:6px;height:6px;
  border-radius:50%;background:var(--accent);
}
.acc-inner .note{
  margin-top:16px;padding:14px 16px;border-left:3px solid var(--primary);
  background:var(--primary-light);border-radius:0 var(--r-btn) var(--r-btn) 0;
  font-size:14px;line-height:1.8;color:var(--primary-dark);
}
.search-empty{
  padding:48px 24px;text-align:center;border:1px dashed var(--border);border-radius:var(--r-card);
  background:#fff;
}
.search-empty strong{display:block;font-size:16px;font-weight:600;color:var(--text)}
.search-empty span{display:block;margin-top:8px;font-size:13px;color:var(--text-3)}

/* ============ 对照区块 ============ */
.compare{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:center}
.compare-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-md);
  aspect-ratio:4/5;background:linear-gradient(160deg,var(--primary),var(--primary-dark));
}
.compare-media img{width:100%;height:100%;object-fit:cover}
.compare-media .media-tag{
  position:absolute;left:16px;top:16px;
  background:rgba(255,255,255,.92);color:var(--primary);
  font-size:13px;font-weight:600;padding:5px 14px;border-radius:999px;box-shadow:var(--shadow-sm);
}
.compare-list{display:flex;flex-direction:column}
.compare-item{padding:22px 0;border-bottom:1px solid var(--border)}
.compare-item:first-child{padding-top:0}
.compare-item:last-child{border-bottom:none;padding-bottom:0}
.compare-item h3{font-size:18px;font-weight:600;line-height:1.5;display:flex;align-items:center;gap:10px}
.compare-item h3::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none}
.compare-item p{margin-top:8px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ============ 联系条 ============ */
.contact-bar{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:30px 34px;box-shadow:var(--shadow-sm);
}
.contact-bar h3{font-size:19px;font-weight:600;line-height:1.5}
.contact-bar p{margin-top:8px;font-size:15px;line-height:1.8;color:var(--text-2);max-width:560px}

/* ============ 深色 CTA ============ */
.cta-band{
  position:relative;color:var(--on-dark);
  background-image:linear-gradient(150deg,rgba(10,63,58,.95),rgba(15,92,85,.9)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  padding:76px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-inner h2{font-size:28px;line-height:1.4;font-weight:700;color:#fff;max-width:560px}
.cta-inner p{margin-top:14px;font-size:15px;line-height:1.9;color:rgba(242,246,245,.8);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--primary-dark);color:rgba(242,246,245,.72);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo-main{color:#fff;font-size:18px}
.footer-brand .logo-sub{color:rgba(242,246,245,.55)}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.85;max-width:320px;color:rgba(242,246,245,.66)}
.site-footer h4{font-size:14px;font-weight:600;color:rgba(242,246,245,.92);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  position:relative;font-size:14px;color:rgba(242,246,245,.66);
  transition:color .2s ease;
}
.footer-links a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1px;
  background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.footer-links a:hover{color:#fff}
.footer-links a:hover::after{transform:scaleX(1)}
.footer-note{font-size:14px;line-height:1.85;color:rgba(242,246,245,.66)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(242,246,245,.14);
  display:flex;flex-wrap:wrap;gap:10px 28px;justify-content:space-between;
  font-size:13px;color:rgba(242,246,245,.5);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-title{font-size:40px}
  .faq-layout{grid-template-columns:200px minmax(0,1fr);gap:36px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .quick-grid{grid-template-columns:1fr 1fr}
  .compare{grid-template-columns:1fr;gap:32px}
  .compare-media{aspect-ratio:16/10;max-width:560px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .anchor-nav{position:static;border-left:none;padding-left:0;border-top:1px solid var(--border);padding-top:20px}
  .anchor-nav ul{flex-direction:row;flex-wrap:wrap;gap:8px}
  .anchor-nav a{
    margin-left:0;padding:7px 14px;border-left:none;border:1px solid var(--border);
    border-radius:999px;background:#fff;font-size:13px;
  }
  .anchor-nav a.active{border-color:var(--primary);background:var(--primary-light)}
  .anchor-tip{margin-top:18px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:82%;max-width:340px;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:88px 24px 32px;
    transform:translateX(100%);transition:transform .28s ease;
    box-shadow:var(--shadow-lg);z-index:60;overflow-y:auto;
  }
  body.nav-open .nav-links{transform:translateX(0)}
  .nav-links a{
    display:block;width:100%;padding:15px 0;font-size:16px;color:var(--text);
    border-bottom:1px solid var(--border);
  }
  .nav-links a::after{display:none}
  .nav-links a.active{color:var(--primary);font-weight:600}
  .nav-search{display:none}
  .nav-toggle{display:block}
  .nav-left{gap:0}
  .nav-right{gap:10px}
  .page-hero{padding:118px 0 56px}
  .hero-title{font-size:28px;line-height:1.36}
  .hero-lead{font-size:15px;line-height:1.85}
  .hero-search{flex-wrap:wrap;padding:10px 12px}
  .hero-search input{padding:8px 0;width:100%;order:2}
  .hero-search .btn{width:100%;order:3}
  .hero-search svg{order:1}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .sec-title{font-size:22px;line-height:1.42}
  .sec-head{margin-bottom:32px}
  .quick-grid{grid-template-columns:1fr;gap:16px}
  .quick-card{padding:22px 20px}
  .group-title{font-size:18px}
  .acc-head{font-size:16px;padding:18px 0}
  .compare-media{aspect-ratio:16/11}
  .contact-bar{padding:24px 22px;flex-direction:column;align-items:flex-start}
  .contact-bar .btn{width:100%}
  .cta-band{padding:56px 0}
  .cta-inner h2{font-size:22px;line-height:1.44}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:36px}
}
@media (max-width:519px){
  .hero-title{font-size:25px}
  .hero-tags .badge{font-size:12px;padding:4px 10px}
  .sec-title{font-size:20px}
  .quick-card h3{font-size:16px}
  .acc-head{font-size:15px}
  .acc-inner p,.acc-inner .steps li{font-size:14px}
  .btn{padding:11px 18px;font-size:14px}
  .btn-lg{padding:13px 22px;font-size:15px}
}