/* roulang page: index */
:root{
  --brand:#0E7C6B;
  --brand-hover:#12967F;
  --brand-light:#E6F4F0;
  --brand-dark:#0A5B4F;
  --amber:#E8873A;
  --amber-light:#FDF2E6;
  --ink:#0B1412;
  --ink2:#2A3A37;
  --muted:#6B7C79;
  --line:#E2E8E6;
  --bg:#F6F8F7;
  --surface:#FFFFFF;
  --dark:#0F1E1C;
  --success:#1E9E6A;
  --warn:#D98B1F;
  --danger:#D24B4B;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --shadow:0 1px 2px rgba(11,20,18,.04),0 8px 24px rgba(11,20,18,.06);
  --shadow-hover:0 12px 32px rgba(11,20,18,.10);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --sidebar-w:248px;
}
*,*::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:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;}
a:hover{color:var(--brand-hover);}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:3px solid rgba(18,150,127,.28);
  outline-offset:2px;
  border-radius:8px;
}
::selection{background:var(--brand-light);color:var(--brand-dark);}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#D7E0DE;border-radius:10px;}
::-webkit-scrollbar-thumb{background:var(--brand);border-radius:10px;border:2px solid #D7E0DE;}

/* ---------- 应用外壳 ---------- */
.app{display:flex;min-height:100vh;}
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  flex:0 0 var(--sidebar-w);
  background:var(--dark);
  padding:22px 16px 24px;
  display:flex;
  flex-direction:column;
  z-index:60;
  overflow-y:auto;
}
.app-main{
  margin-left:var(--sidebar-w);
  flex:1 1 auto;
  min-width:0;
  display:flex;
  flex-direction:column;
}

.side-logo{
  display:flex;
  align-items:center;
  gap:10px;
  padding:0 6px 18px;
  border-bottom:1px solid rgba(255,255,255,.09);
  margin-bottom:18px;
}
.logo-mark{
  width:38px;height:38px;flex:0 0 38px;
  border-radius:11px;
  background:linear-gradient(140deg,#12967F,#0A5B4F);
  display:grid;place-items:center;
  color:#fff;font-size:16px;
}
.logo-text{
  font-size:15px;
  font-weight:700;
  color:#fff;
  line-height:1.35;
  letter-spacing:.2px;
}
.logo-text small{
  display:block;
  font-size:11px;
  font-weight:400;
  color:#7FA39C;
  letter-spacing:.5px;
  margin-top:2px;
}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  height:44px;
  padding:0 12px;
  border-radius:var(--r-btn);
  color:#C6D6D2;
  font-size:14.5px;
  font-weight:500;
  transition:background .18s ease,color .18s ease;
}
.nav-item i{width:20px;text-align:center;font-size:15px;opacity:.9;}
.nav-item:hover{background:rgba(230,244,240,.10);color:#fff;}
.nav-item.active{background:var(--brand-light);color:var(--brand-dark);font-weight:700;}
.nav-item.active::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand);
}
.side-cta{margin-top:auto;padding-top:22px;}
.side-cta .btn{width:100%;}
.side-note{
  margin-top:14px;
  font-size:12px;
  line-height:1.7;
  color:#68807B;
  font-family:var(--mono);
}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:50;
  height:60px;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:0 16px;
  background:var(--surface);
  border-bottom:1px solid var(--line);
}
.topbar-brand{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14.5px;
  font-weight:700;
  color:var(--ink);
}
.topbar-brand .logo-mark{width:30px;height:30px;flex:0 0 30px;font-size:13px;border-radius:9px;}
.nav-toggle{
  width:42px;height:42px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--ink2);
  font-size:16px;
  cursor:pointer;
  display:grid;place-items:center;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}
.drawer-mask{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(11,20,18,.5);
  z-index:55;
  opacity:0;
  transition:opacity .25s ease;
}
body.drawer-open .drawer-mask{opacity:1;}

/* ---------- 通用容器与板块 ---------- */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
.section{padding:88px 0;}
.section-tight{padding:0 0 88px;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:28px;
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.2px;
}
.section-head p{
  margin-top:10px;
  font-size:15px;
  color:var(--muted);
  max-width:640px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 14px;
  border-radius:999px;
  background:var(--brand-light);
  color:var(--brand-dark);
  font-size:13px;
  font-weight:600;
  letter-spacing:.2px;
}
.eyebrow.amber{background:var(--amber-light);color:#A85C18;}
.meta-line{
  font-family:var(--mono);
  font-size:13px;
  color:var(--muted);
  letter-spacing:.2px;
}
.rule{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  background:transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(11,20,18,.08);}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:none;background:var(--brand-dark);box-shadow:none;}
.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-outline:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-2px);}
.btn-outline:active{transform:none;}
.btn-amber{background:var(--amber);color:#fff;}
.btn-amber:hover{background:#F09548;color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(232,135,58,.28);}
.btn-amber:active{transform:none;}
.btn-light{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.28);color:#fff;}
.btn-light:hover{background:rgba(255,255,255,.18);color:#fff;transform:translateY(-2px);}
.btn-light:active{transform:none;}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;
  padding:64px 0 80px;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  top:-160px;right:-120px;
  width:540px;height:540px;
  border-radius:50%;
  background:var(--brand-light);
  opacity:.75;
  z-index:0;
}
.hero-inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.hero h1{
  font-size:40px;
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.5px;
  margin:20px 0 0;
}
.hero-sub{
  margin-top:18px;
  font-size:17px;
  color:var(--ink2);
  max-width:600px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.hero-meta{
  margin-top:22px;
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  font-family:var(--mono);
  font-size:13px;
  color:var(--muted);
}
.hero-meta .dot{width:4px;height:4px;border-radius:50%;background:#B9C8C5;}
.hero-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-img);
  box-shadow:var(--shadow);
}

/* ---------- 下载核心区 ---------- */
.download-card{
  max-width:960px;
  margin:0 auto;
  background:var(--brand-light);
  border:1px solid #D3EAE4;
  border-radius:20px;
  padding:36px;
}
.download-head{
  display:flex;
  align-items:center;
  gap:22px;
  flex-wrap:wrap;
}
.app-icon{
  width:96px;height:96px;flex:0 0 96px;
  border-radius:24px;
  background:var(--surface);
  border:1px solid #D3EAE4;
  display:grid;place-items:center;
  font-size:38px;
  color:var(--brand);
  box-shadow:var(--shadow);
}
.download-head h2{
  font-size:24px;
  line-height:1.35;
  font-weight:700;
}
.download-head p{
  margin-top:8px;
  font-size:15px;
  color:var(--ink2);
  max-width:520px;
}
.platform-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:14px;
  margin-top:28px;
}
.platform-btn{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:9px;
  padding:18px 10px;
  border-radius:12px;
  background:var(--surface);
  border:1px solid var(--line);
  color:var(--ink2);
  font-size:14px;
  font-weight:600;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
}
.platform-btn i{font-size:22px;color:var(--brand);}
.platform-btn:hover{
  border-color:var(--brand);
  color:var(--brand-dark);
  transform:translateY(-2px);
  box-shadow:var(--shadow);
}
.platform-btn.primary{
  background:var(--brand);
  border-color:var(--brand);
  color:#fff;
  box-shadow:0 1px 2px rgba(11,20,18,.08);
}
.platform-btn.primary i{color:#fff;}
.platform-btn.primary:hover{background:var(--brand-hover);color:#fff;box-shadow:var(--shadow-hover);}
.platform-btn:active{transform:none;}
.verify-line{
  margin-top:24px;
  padding-top:20px;
  border-top:1px dashed #BFDDD6;
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  font-family:var(--mono);
  font-size:13px;
  color:var(--brand-dark);
}
.verify-line span{display:inline-flex;align-items:center;gap:7px;}
.verify-line i{font-size:12px;color:var(--success);}

/* ---------- 截图轮播 ---------- */
.shot-wrap{position:relative;}
.shot-controls{
  display:flex;
  gap:10px;
  align-items:center;
}
.shot-arrow{
  width:42px;height:42px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--ink2);
  cursor:pointer;
  display:grid;place-items:center;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.shot-arrow:hover{background:var(--brand);border-color:var(--brand);color:#fff;transform:translateY(-2px);}
.shot-arrow:active{transform:none;}
.shot-track{
  display:flex;
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 4px 20px;
  scrollbar-width:thin;
}
.shot-card{
  flex:0 0 320px;
  scroll-snap-align:start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.shot-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(14,124,107,.35);}
.shot-card img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  background:#EEF2F1;
}
.shot-body{padding:18px 20px 22px;}
.shot-body h3{font-size:16px;font-weight:600;line-height:1.45;}
.shot-body p{margin-top:6px;font-size:14px;color:var(--muted);line-height:1.7;}
.shot-dots{
  display:flex;
  justify-content:center;
  gap:8px;
  margin-top:6px;
}
.dot{
  width:8px;height:8px;
  border-radius:50%;
  border:0;
  padding:0;
  background:#CBD8D5;
  cursor:pointer;
  transition:background .2s ease,width .2s ease;
}
.dot.active{background:var(--brand);width:24px;border-radius:999px;}

/* ---------- 功能价值区 ---------- */
.value-grid{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:22px;
}
.value-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
  padding:28px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.value-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(14,124,107,.35);}
.value-card.lg{grid-column:span 3;}
.value-card.sm{grid-column:span 2;padding:24px;}
.value-icon{
  width:46px;height:46px;
  border-radius:13px;
  background:var(--brand-light);
  color:var(--brand-dark);
  display:grid;place-items:center;
  font-size:19px;
  margin-bottom:18px;
}
.value-card.sm .value-icon{
  width:40px;height:40px;font-size:17px;border-radius:11px;
  background:var(--amber-light);color:#A85C18;
  margin-bottom:14px;
}
.value-card h3{font-size:20px;font-weight:600;line-height:1.4;}
.value-card.sm h3{font-size:17px;}
.value-card p{margin-top:10px;font-size:15px;color:var(--ink2);line-height:1.8;}
.value-card.sm p{font-size:14px;color:var(--muted);}
.value-tag{
  display:inline-block;
  margin-top:16px;
  font-family:var(--mono);
  font-size:12.5px;
  color:var(--brand-dark);
  background:var(--brand-light);
  padding:3px 10px;
  border-radius:999px;
}

/* ---------- 系统要求 ---------- */
.req-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.req-block{
  background:var(--surface);
  border:1px solid var(--line);
  border-left:3px solid var(--brand);
  border-radius:12px;
  padding:10px 26px;
  box-shadow:var(--shadow);
}
.req-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:15px 0;
  border-bottom:1px solid var(--line);
}
.req-row:last-child{border-bottom:0;}
.req-key{font-size:14.5px;color:var(--muted);}
.req-val{
  font-family:var(--mono);
  font-size:14px;
  color:var(--ink);
  text-align:right;
  font-weight:600;
}
.req-note{
  margin-top:22px;
  font-size:14px;
  color:var(--muted);
}

/* ---------- 最新信息 ---------- */
.news-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:22px;
}
.news-item{
  display:flex;
  gap:18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:18px;
  box-shadow:var(--shadow);
  color:inherit;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(14,124,107,.35);
  color:inherit;
}
.news-thumb{
  flex:0 0 160px;
  width:160px;
  height:104px;
  border-radius:10px;
  overflow:hidden;
  background:#EEF2F1;
}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-body{min-width:0;flex:1;}
.news-body h3{
  font-size:16.5px;
  font-weight:600;
  line-height:1.5;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.news-body p{
  margin-top:8px;
  font-size:14px;
  color:var(--muted);
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-meta{
  display:flex;
  align-items:center;
  gap:12px;
  margin-top:12px;
  font-size:13px;
  color:var(--muted);
  font-family:var(--mono);
}
.news-meta .badge{
  font-family:var(--font);
  background:var(--brand-light);
  color:var(--brand-dark);
  padding:2px 10px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
}
.news-meta .more{margin-left:auto;color:var(--brand);font-weight:600;font-family:var(--font);}
.empty-state{
  background:var(--surface);
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  padding:56px 24px;
  text-align:center;
  color:var(--muted);
}
.empty-state i{font-size:34px;color:#C3D2CE;}
.empty-state p{margin:14px 0 20px;font-size:15px;}

/* ---------- 评价墙 ---------- */
.review-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:22px;
}
.review-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px 26px;
  box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease;
}
.review-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.review-top{display:flex;align-items:center;gap:12px;}
.avatar{
  width:40px;height:40px;flex:0 0 40px;
  border-radius:999px;
  display:grid;place-items:center;
  font-size:15px;
  font-weight:700;
  color:#fff;
  background:var(--brand);
}
.avatar.b{background:#3E8E7E;}
.avatar.c{background:var(--amber);}
.avatar.d{background:#5C7C76;}
.avatar.e{background:#0A5B4F;}
.avatar.f{background:#C1773A;}
.review-name{font-size:15px;font-weight:600;}
.review-role{font-size:12.5px;color:var(--muted);font-family:var(--mono);}
.stars{margin-left:auto;color:var(--amber);font-size:13px;letter-spacing:1px;}
.review-card blockquote{
  margin-top:16px;
  padding-left:14px;
  border-left:3px solid var(--brand-light);
  font-size:15px;
  color:var(--ink2);
  line-height:1.8;
}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 24px;
  font-size:16px;
  font-weight:600;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary i{color:var(--brand);font-size:14px;transition:transform .25s ease;flex:0 0 auto;}
.faq-item[open]{background:var(--brand-light);border-color:#CDE7E0;}
.faq-item[open] summary i{transform:rotate(180deg);}
.faq-item p{
  padding:0 24px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink2);
}

/* ---------- 底部 CTA ---------- */
.cta-band{
  background:var(--dark);
  border-radius:24px;
  padding:56px 40px;
  text-align:center;
  color:#fff;
}
.cta-band h2{font-size:28px;line-height:1.35;font-weight:700;}
.cta-band p{
  margin:14px auto 0;
  max-width:620px;
  font-size:15.5px;
  color:#A9C0BC;
  line-height:1.85;
}
.cta-actions{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;
  background:#0B1513;
  color:#9FB5B0;
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.footer-brand .logo-mark{width:34px;height:34px;flex:0 0 34px;font-size:14px;border-radius:10px;}
.footer-brand span{color:#fff;font-size:15.5px;font-weight:700;}
.footer-desc{font-size:14px;line-height:1.9;color:#8AA09C;max-width:340px;}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:.3px;
}
.footer-col li{margin-bottom:2px;}
.footer-col a{
  font-size:14px;
  line-height:1.9;
  color:#9FB5B0;
  transition:color .18s ease;
}
.footer-col a:hover{color:var(--brand-hover);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#6E8580;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 24px;}
  .hero h1{font-size:36px;}
}
@media (max-width:991px){
  .sidebar{
    width:280px;
    flex-basis:280px;
    transform:translateX(-100%);
    transition:transform .28s ease;
    box-shadow:0 0 40px rgba(0,0,0,.3);
  }
  body.drawer-open .sidebar{transform:none;}
  .drawer-mask{display:block;}
  .app-main{margin-left:0;}
  .topbar{display:flex;}
  .hero{padding:40px 0 56px;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-media{order:2;}
  .hero-copy{order:1;}
  .hero h1{font-size:32px;}
  .section{padding:64px 0;}
  .section-tight{padding:0 0 64px;}
  .value-grid{grid-template-columns:repeat(2,1fr);}
  .value-card.lg,.value-card.sm{grid-column:span 1;}
  .req-grid,.news-list,.review-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .hero{padding:32px 0 48px;}
  .hero::before{display:none;}
  .hero h1{font-size:28px;line-height:1.35;}
  .hero-sub{font-size:15.5px;}
  .hero-actions .btn{flex:1 1 100%;}
  .section{padding:56px 0;}
  .section-tight{padding:0 0 56px;}
  .section-head h2{font-size:23px;}
  .download-card{padding:24px;}
  .app-icon{width:76px;height:76px;flex:0 0 76px;font-size:30px;border-radius:20px;}
  .download-head h2{font-size:20px;}
  .platform-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
  .shot-card{flex:0 0 260px;}
  .value-grid{grid-template-columns:1fr;gap:16px;}
  .value-card{padding:22px;}
  .req-block{padding:6px 18px;}
  .req-row{flex-direction:column;align-items:flex-start;gap:4px;}
  .req-val{text-align:left;}
  .news-item{flex-direction:column;gap:14px;}
  .news-thumb{width:100%;flex:0 0 auto;height:150px;}
  .cta-band{padding:40px 22px;border-radius:18px;}
  .cta-band h2{font-size:22px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{margin-top:56px;padding-top:48px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important;animation:none !important;}
}

/* roulang page: article */
:root{
  --brand:#0E7C6B;
  --brand-hover:#12967F;
  --brand-light:#E6F4F0;
  --brand-deep:#0A5B4F;
  --amber:#E8873A;
  --amber-light:#FDF2E6;
  --text:#0B1412;
  --text-2:#2A3A37;
  --text-3:#6B7C79;
  --line:#E2E8E6;
  --bg:#F6F8F7;
  --card:#FFFFFF;
  --dark:#0F1E1C;
  --success:#1E9E6A;
  --warn:#D98B1F;
  --danger:#D24B4B;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --shadow:0 1px 2px rgba(11,20,18,.04), 0 8px 24px rgba(11,20,18,.06);
  --shadow-hover:0 12px 32px rgba(11,20,18,.10);
  --sidebar-w:248px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --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:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-hover);}
img{max-width:100%;display:block;border-radius:var(--r-img);}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;}
::selection{background:var(--brand-light);color:var(--brand-deep);}
:focus-visible{outline:3px solid rgba(18,150,127,.45);outline-offset:2px;border-radius:6px;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#D7E0DE;}
::-webkit-scrollbar-thumb{background:var(--brand);border-radius:999px;border:2px solid #D7E0DE;}

.container{max-width:1200px;margin:0 auto;padding:0 32px;}

/* ============ 侧栏 App Shell ============ */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
  background:var(--dark);
  display:flex;flex-direction:column;
  padding:24px 16px 20px;
  z-index:60;
  border-right:1px solid rgba(226,232,230,.08);
}
.brand{
  display:flex;align-items:center;gap:10px;
  padding:6px 8px 22px;
  color:#F3F7F6;
}
.brand:hover{color:#FFFFFF;}
.logo-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--brand-hover));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:16px;
}
.brand-text{font-weight:700;font-size:15px;letter-spacing:.3px;line-height:1.3;}
.side-nav{display:flex;flex-direction:column;gap:6px;flex:1;}
.nav-item{
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:var(--r-btn);
  color:#AFC3BF;font-size:14.5px;font-weight:500;
  border-left:3px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.nav-item i{font-size:16px;width:20px;text-align:center;color:#8AA5A0;}
.nav-item:hover{background:rgba(230,244,240,.08);color:#FFFFFF;}
.nav-item:hover i{color:var(--brand-hover);}
.nav-item.active{
  background:rgba(14,124,107,.22);
  color:#8FE7D4;
  border-left-color:var(--brand);
  font-weight:600;
}
.nav-item.active i{color:#8FE7D4;}
.side-foot{margin-top:18px;padding-top:18px;border-top:1px solid rgba(226,232,230,.10);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn:active{transform:none;filter:brightness(.95);}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(11,20,18,.10);}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-outline{border:1px solid var(--brand);color:var(--brand);background:transparent;}
.btn-outline:hover{background:var(--brand-light);color:var(--brand-deep);transform:translateY(-2px);}
.btn-ghost{background:rgba(230,244,240,.10);color:#DCEBE7;border:1px solid rgba(226,232,230,.18);}
.btn-ghost:hover{background:rgba(230,244,240,.18);color:#fff;transform:translateY(-2px);}
.btn-block{width:100%;}

/* ============ 移动端顶栏 ============ */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;
  padding:0 14px;z-index:70;
}
.mobile-bar .brand{padding:0;color:var(--text);}
.mobile-bar .brand-text{font-size:14.5px;color:var(--text);}
.menu-btn,.icon-btn{
  width:40px;height:40px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  color:var(--text-2);font-size:17px;background:var(--bg);
  border:1px solid var(--line);
}
.menu-btn:hover,.icon-btn:hover{background:var(--brand-light);color:var(--brand-deep);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,20,18,.5);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:55;
}
.drawer-mask.show{opacity:1;visibility:visible;}

/* ============ 主内容 ============ */
.main{margin-left:var(--sidebar-w);min-height:100vh;padding:40px 0 88px;}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13.5px;color:var(--text-3);line-height:1.6;margin-bottom:22px;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#C3CFCC;}
.breadcrumb .current{
  color:var(--text-2);max-width:420px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}

.post-head{border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:32px;}
.cat-badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-light);color:var(--brand-deep);
  font-size:13px;font-weight:600;line-height:1;
}
.post-head h1{
  font-size:34px;line-height:1.35;font-weight:700;color:var(--text);
  margin:16px 0 18px;letter-spacing:-.2px;overflow-wrap:anywhere;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;
  font-size:13px;color:var(--text-3);font-family:var(--mono);
}
.post-meta .m-item{display:inline-flex;align-items:center;gap:6px;}
.post-meta i{color:var(--brand);font-size:13px;}
.post-meta .dot{color:#C3CFCC;}
.post-meta a{font-family:var(--font);}

.reading{max-width:760px;}

/* ============ 正文排版 ============ */
.article-body{font-size:16px;line-height:1.85;color:var(--text-2);}
.article-body>*+*{margin-top:18px;}
.article-body p{margin:0 0 18px;}
.article-body h2{
  position:relative;font-size:28px;line-height:1.3;font-weight:700;color:var(--text);
  padding-left:14px;margin:40px 0 12px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;
  background:var(--brand);border-radius:2px;
}
.article-body h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--text);margin:28px 0 10px;}
.article-body h4{font-size:17px;font-weight:600;color:var(--text);margin:22px 0 8px;}
.article-body strong{color:var(--text);font-weight:600;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:2px;}
.article-body ul li,.article-body ol li{
  position:relative;padding-left:22px;line-height:1.9;margin-bottom:8px;color:var(--text-2);
}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.78em;
  width:7px;height:7px;border-radius:2px;background:var(--brand);
}
.article-body ol{counter-reset:li;}
.article-body ol li{counter-increment:li;}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.35em;
  width:18px;height:18px;border-radius:999px;background:var(--brand-light);
  color:var(--brand-deep);font-size:11px;font-weight:700;font-family:var(--mono);
  display:flex;align-items:center;justify-content:center;line-height:1;
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--bg);
  border-left:3px solid var(--amber);border-radius:0 12px 12px 0;
  color:var(--text-2);font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);box-shadow:var(--shadow);margin:24px auto;}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body a{border-bottom:1px solid rgba(14,124,107,.35);}
.article-body a:hover{border-bottom-color:var(--brand);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}
.article-body code{
  font-family:var(--mono);font-size:13.5px;background:var(--brand-light);
  color:var(--brand-deep);padding:2px 6px;border-radius:6px;
}
.article-body pre{
  background:var(--dark);color:#CFE3DE;padding:18px 20px;border-radius:12px;
  overflow-x:auto;font-family:var(--mono);font-size:13.5px;line-height:1.75;
}
.article-body pre code{background:transparent;color:inherit;padding:0;}
.article-body table{
  width:100%;border-collapse:collapse;font-size:14.5px;margin:24px 0;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-body thead th{
  background:var(--brand-light);color:var(--brand-deep);
  font-size:14px;font-weight:600;text-align:left;padding:12px 14px;white-space:nowrap;
}
.article-body tbody td{padding:12px 14px;border-top:1px solid var(--line);color:var(--text-2);}
.article-body tbody tr:nth-child(even){background:#FAFCFB;}
.article-body .table-scroll{overflow-x:auto;}

/* 空态 */
.empty-state{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow);padding:56px 28px;text-align:center;
}
.empty-state i{font-size:38px;color:#C3CFCC;margin-bottom:16px;display:block;}
.empty-state h3{font-size:20px;font-weight:600;color:var(--text);margin-bottom:8px;}
.empty-state p{font-size:14.5px;color:var(--text-3);margin-bottom:22px;}

/* 标签行 */
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin:36px 0 0;padding-top:22px;border-top:1px solid var(--line);
}
.tag-row .label{font-size:13px;color:var(--text-3);font-family:var(--mono);}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 13px;
  border-radius:999px;background:var(--brand-light);color:var(--brand-deep);
  font-size:13px;font-weight:500;transition:background .2s ease,color .2s ease;
}
.tag:hover{background:var(--brand);color:#fff;}

/* 上下篇 */
.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px;}
.pn-card{
  display:block;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.pn-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(14,124,107,.35);}
.pn-card .pn-k{font-size:12.5px;color:var(--text-3);font-family:var(--mono);letter-spacing:.4px;}
.pn-card .pn-t{font-size:16px;font-weight:600;color:var(--text);margin-top:8px;line-height:1.5;}
.pn-card.right{text-align:right;}

/* 相关推荐 */
.section{margin-top:64px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;}
.section-head h2{font-size:24px;line-height:1.35;font-weight:700;color:var(--text);}
.section-head h2 span{color:var(--brand);}
.section-head .more{font-size:14px;font-weight:600;white-space:nowrap;}

.rec-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.rec-card{
  display:flex;gap:14px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px;box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(14,124,107,.35);}
.rec-thumb{
  width:96px;height:68px;flex:0 0 96px;border-radius:10px;overflow:hidden;
  background:#EEF2F1;
}
.rec-thumb img{width:100%;height:100%;object-fit:cover;border-radius:10px;}
.rec-body h3{
  font-size:15px;font-weight:600;color:var(--text);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rec-body .rec-meta{font-size:12.5px;color:var(--text-3);font-family:var(--mono);margin-top:6px;}

.back-row{margin-top:44px;display:flex;justify-content:center;}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:#9FB4B0;margin-left:var(--sidebar-w);padding:64px 0 0;}
.site-footer .container{max-width:1200px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#F3F7F6;font-weight:700;font-size:16px;margin-bottom:16px;}
.footer-desc{font-size:14px;line-height:1.85;color:#8FA5A1;max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:#E3EDEA;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;line-height:1.9;color:#9FB4B0;}
.footer-col a:hover{color:#5FD9C0;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  border-top:1px solid rgba(226,232,230,.12);padding:22px 0 32px;
  font-size:13px;color:#7B918D;
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 24px;}
  .post-head h1{font-size:30px;}
  .footer-grid{gap:32px;}
}
@media (max-width:991px){
  .mobile-bar{display:flex;}
  .sidebar{
    transform:translateX(-100%);
    transition:transform .28s cubic-bezier(.4,0,.2,1);
    top:0;padding-top:22px;
  }
  .sidebar.open{transform:translateX(0);}
  .main{margin-left:0;padding:84px 0 56px;}
  .site-footer{margin-left:0;}
  .container{padding:0 20px;}
  .rec-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .main{padding-top:76px;}
  .post-head h1{font-size:26px;line-height:1.4;}
  .article-body h2{font-size:22px;margin-top:34px;}
  .article-body h3{font-size:18px;}
  .article-body{font-size:15.5px;}
  .prevnext{grid-template-columns:1fr;}
  .pn-card.right{text-align:left;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .section{margin-top:48px;}
  .breadcrumb .current{max-width:200px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .post-head h1{font-size:22px;}
  .btn{width:100%;}
  .rec-card{flex-direction:column;align-items:flex-start;}
  .rec-thumb{width:100%;height:150px;flex:none;}
  .back-row .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --brand:#0E7C6B;
  --brand-hover:#12967F;
  --brand-light:#E6F4F0;
  --brand-deep:#0A5B4F;
  --accent:#E8873A;
  --accent-light:#FDF2E6;
  --ink:#0B1412;
  --ink-2:#2A3A37;
  --ink-3:#6B7C79;
  --line:#E2E8E6;
  --bg:#F6F8F7;
  --card:#FFFFFF;
  --dark:#0F1E1C;
  --ok:#1E9E6A;
  --warn:#D98B1F;
  --danger:#D24B4B;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow:0 1px 2px rgba(11,20,18,.04), 0 8px 24px rgba(11,20,18,.06);
  --shadow-hover:0 12px 32px rgba(11,20,18,.10);
  --sidebar-w:248px;
  --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","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-hover);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(18,150,127,.35);outline-offset:2px;border-radius:6px;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#D7E0DE;}
::-webkit-scrollbar-thumb{background:var(--brand);border-radius:8px;border:2px solid #D7E0DE;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 侧边导航 ---------- */
.sidebar{
  position:fixed;
  top:0;left:0;
  width:var(--sidebar-w);
  height:100vh;
  background:var(--dark);
  display:flex;
  flex-direction:column;
  padding:22px 16px;
  z-index:60;
  overflow-y:auto;
}
.sidebar .brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-weight:700;
  font-size:15px;
  line-height:1.35;
  padding:4px 8px 20px;
}
.sidebar .brand:hover{color:#fff;}
.logo-mark{
  width:36px;height:36px;flex:0 0 36px;
  border-radius:10px;
  background:var(--brand);
  color:#fff;
  display:grid;place-items:center;
  font-size:16px;
}
.brand-text{letter-spacing:.01em;}
.side-nav{display:flex;flex-direction:column;gap:6px;margin-top:6px;}
.side-nav .nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  height:44px;
  padding:0 12px;
  border-radius:var(--radius-btn);
  color:#C7D3D0;
  font-size:15px;
  font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.side-nav .nav-item i{width:20px;text-align:center;font-size:15px;}
.side-nav .nav-item:hover{background:rgba(255,255,255,.07);color:#fff;}
.side-nav .nav-item.active{background:var(--brand-light);color:var(--brand-deep);font-weight:600;}
.side-nav .nav-item.active::before{
  content:"";
  position:absolute;
  left:-16px;top:8px;bottom:8px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand);
}
.sidebar-foot{margin-top:auto;padding-top:24px;}
.sidebar-note{
  font-size:12.5px;
  line-height:1.7;
  color:#7C8E8A;
  padding:0 8px 14px;
}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:60px;
  background:#fff;
  border-bottom:1px solid var(--line);
  align-items:center;
  gap:12px;
  padding:0 16px;
  z-index:70;
  box-shadow:0 2px 10px rgba(11,20,18,.05);
}
.topbar .brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:15px;}
.drawer-toggle{
  width:40px;height:40px;
  border:1px solid var(--line);
  background:#fff;
  border-radius:var(--radius-btn);
  color:var(--ink-2);
  font-size:16px;
  cursor:pointer;
  display:grid;place-items:center;
  transition:border-color .2s ease,color .2s ease;
}
.drawer-toggle:hover{border-color:var(--brand);color:var(--brand);}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(11,20,18,.5);
  opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
  z-index:55;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 主内容区 ---------- */
.main-area{margin-left:var(--sidebar-w);min-height:100vh;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(0);background:var(--brand-deep);}
.btn-outline{background:transparent;border-color:rgba(14,124,107,.55);color:var(--brand);}
.btn-outline:hover{background:var(--brand-light);color:var(--brand-deep);border-color:var(--brand);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#F0954C;color:#fff;transform:translateY(-2px);box-shadow:0 12px 32px rgba(232,135,58,.30);}
.btn-accent:active{transform:translateY(0);background:#D2772E;}
.btn-lg{height:52px;padding:0 26px;font-size:16px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  line-height:1.6;
}
.badge-brand{background:var(--brand-light);color:var(--brand-deep);}
.badge-accent{background:var(--accent-light);color:#B65F19;}
.badge-solid{background:rgba(255,255,255,.16);color:#fff;}

/* ---------- 分类首屏 ---------- */
.cat-hero{
  position:relative;
  min-height:300px;
  display:flex;
  align-items:center;
  overflow:hidden;
  background:var(--dark);
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-size:cover;
  background-position:center;
  opacity:.6;
}
.cat-hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(15,30,28,.90) 0%,rgba(15,30,28,.70) 52%,rgba(15,30,28,.48) 100%);
}
.cat-hero-inner{
  position:relative;
  z-index:2;
  padding-top:44px;
  padding-bottom:44px;
  color:#fff;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.72);
  margin-bottom:16px;
}
.breadcrumb a{color:rgba(255,255,255,.72);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{opacity:.5;}
.cat-hero h1{
  color:#fff;
  font-size:40px;
  line-height:1.25;
  font-weight:700;
  max-width:820px;
  margin-top:14px;
}
.cat-hero-sub{
  margin-top:16px;
  max-width:720px;
  font-size:16px;
  line-height:1.85;
  color:rgba(255,255,255,.85);
}
.cat-hero-meta{
  margin-top:22px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  font-family:var(--mono);
  font-size:13px;
  color:rgba(255,255,255,.72);
}
.cat-hero-meta span b{color:#fff;font-weight:600;margin-right:6px;}

/* ---------- 板块 ---------- */
.section{padding:88px 0;}
.section-alt{background:#fff;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:28px;}
.section-head p{margin-top:12px;color:var(--ink-3);font-size:16px;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  background:var(--brand-light);
  padding:4px 12px;
  border-radius:999px;
  margin-bottom:14px;
}
.section-head .eyebrow{margin-bottom:12px;}

/* ---------- 左文右图 ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.split h2{font-size:28px;margin-bottom:14px;}
.split p.lead{color:var(--ink-2);font-size:16px;}
.split-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-img);
  box-shadow:var(--shadow);
}
.check-list{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.check-list li{
  display:flex;
  gap:10px;
  font-size:15.5px;
  color:var(--ink-2);
  line-height:1.75;
}
.check-list i{color:var(--brand);margin-top:7px;font-size:13px;}

/* ---------- 时间线 ---------- */
.timeline{max-width:820px;}
.timeline-item{
  position:relative;
  display:grid;
  grid-template-columns:48px 1fr;
  gap:20px;
  padding-bottom:36px;
}
.timeline-item:last-child{padding-bottom:0;}
.timeline-item::before{
  content:"";
  position:absolute;
  left:23px;
  top:52px;
  bottom:0;
  width:1px;
  background:var(--line);
}
.timeline-item:last-child::before{display:none;}
.timeline-dot{
  width:48px;height:48px;
  border-radius:999px;
  background:var(--accent);
  color:#fff;
  display:grid;place-items:center;
  font-family:var(--mono);
  font-size:17px;
  font-weight:700;
  position:relative;
  z-index:1;
  box-shadow:0 6px 16px rgba(232,135,58,.28);
}
.timeline-body h3{font-size:20px;font-weight:600;}
.timeline-body p{margin-top:8px;color:var(--ink-2);font-size:15.5px;line-height:1.85;}
.timeline-body .tip{
  margin-top:14px;
  background:var(--bg);
  border-left:3px solid var(--accent);
  border-radius:0 10px 10px 0;
  padding:12px 16px;
  font-size:14px;
  color:var(--ink-3);
  font-family:var(--mono);
  line-height:1.8;
}
.timeline-figure{margin-top:16px;}
.timeline-figure img{
  width:100%;
  max-width:460px;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--radius-img);
  box-shadow:var(--shadow);
}
.timeline-figure figcaption{font-size:13px;color:var(--ink-3);margin-top:8px;}

/* ---------- 下载面板 ---------- */
.download-panel{
  max-width:960px;
  margin:0 auto;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:var(--shadow);
  padding:32px;
}
.dl-head{display:flex;align-items:center;gap:18px;margin-bottom:26px;}
.app-icon{
  width:72px;height:72px;
  flex:0 0 72px;
  border-radius:18px;
  background:var(--brand-light);
  color:var(--brand);
  display:grid;place-items:center;
  font-size:30px;
  border:1px solid rgba(14,124,107,.18);
}
.dl-head h3{font-size:20px;font-weight:600;}
.dl-head p{margin-top:4px;color:var(--ink-3);font-size:14.5px;}
.dl-buttons{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;}
.dl-btn{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  height:52px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
  font-size:15px;
  font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease,background .2s ease;
}
.dl-btn i{font-size:18px;color:var(--brand);}
.dl-btn:hover{border-color:rgba(14,124,107,.45);color:var(--brand-deep);transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.dl-btn.is-primary{background:var(--brand);border-color:var(--brand);color:#fff;}
.dl-btn.is-primary i{color:#fff;}
.dl-btn.is-primary:hover{background:var(--brand-hover);border-color:var(--brand-hover);color:#fff;}
.dl-meta{
  display:flex;
  flex-wrap:wrap;
  gap:14px 28px;
  margin-top:24px;
  padding-top:20px;
  border-top:1px dashed var(--line);
  font-family:var(--mono);
  font-size:13px;
  color:var(--ink-3);
}
.dl-meta b{color:var(--ink);font-weight:600;margin-right:6px;}
.dl-note{margin-top:14px;font-size:13.5px;color:var(--ink-3);}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  padding:0 22px;
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(14,124,107,.3);}
.faq-item[open]{background:var(--brand-light);border-color:rgba(14,124,107,.28);box-shadow:var(--shadow);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 0;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";
  width:9px;height:9px;
  flex:0 0 9px;
  border-right:2px solid var(--brand);
  border-bottom:2px solid var(--brand);
  transform:rotate(45deg) translateY(-2px);
  transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg) translateY(-2px);}
.faq-answer{padding:0 0 20px;font-size:15px;line-height:1.8;color:var(--ink-2);max-width:700px;}

/* ---------- 返回入口块 ---------- */
.back-home{
  max-width:960px;
  margin:0 auto;
  background:#fff;
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:var(--shadow);
  padding:40px 32px;
  text-align:center;
}
.back-home h2{font-size:24px;}
.back-home p{margin:12px auto 0;max-width:620px;color:var(--ink-3);}
.back-home .btn-row{justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--dark);
  color:#C7D3D0;
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-weight:700;
  font-size:16px;
  margin-bottom:16px;
}
.footer-brand .logo-mark{width:32px;height:32px;flex:0 0 32px;border-radius:9px;font-size:14px;}
.footer-desc{font-size:14px;line-height:1.9;color:#93A5A1;max-width:360px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-col ul li{margin-bottom:8px;}
.footer-col a{color:#93A5A1;font-size:14px;line-height:1.9;}
.footer-col a:hover{color:#4FC6AE;}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;
  justify-content:space-between;
  gap:12px 24px;
  flex-wrap:wrap;
  font-size:13px;
  color:#7C8E8A;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 24px;}
  .split{gap:40px;}
}
@media (max-width:991px){
  .topbar{display:flex;}
  .sidebar{transform:translateX(-100%);transition:transform .28s ease;box-shadow:0 0 40px rgba(0,0,0,.32);}
  .sidebar.is-open{transform:translateX(0);}
  .main-area{margin-left:0;padding-top:60px;}
  .cat-hero h1{font-size:32px;}
  .section{padding:64px 0;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split-media img{aspect-ratio:16/10;}
  .dl-buttons{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .cat-hero{min-height:auto;}
  .cat-hero-inner{padding-top:36px;padding-bottom:36px;}
  .cat-hero h1{font-size:28px;}
  .cat-hero-sub{font-size:15px;}
  .section-head h2,.split h2{font-size:23px;}
  .download-panel{padding:24px 20px;border-radius:16px;}
  .dl-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .dl-buttons{grid-template-columns:1fr;}
  .dl-btn{width:100%;}
  .btn-row .btn{width:100%;}
  .timeline-item{grid-template-columns:40px 1fr;gap:14px;padding-bottom:28px;}
  .timeline-dot{width:40px;height:40px;font-size:15px;}
  .timeline-item::before{left:19px;top:44px;}
  .timeline-body h3{font-size:17.5px;}
  .back-home{padding:30px 20px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category2 */
:root{
  --brand:#0E7C6B;
  --brand-hover:#12967F;
  --brand-soft:#E6F4F0;
  --brand-deep:#0A5B4F;
  --accent:#E8873A;
  --accent-soft:#FDF2E6;
  --ink:#0B1412;
  --ink-2:#2A3A37;
  --ink-3:#6B7C79;
  --line:#E2E8E6;
  --bg:#F6F8F7;
  --surface:#FFFFFF;
  --dark:#0F1E1C;
  --ok:#1E9E6A;
  --warn:#D98B1F;
  --danger:#D24B4B;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --shadow:0 1px 2px rgba(11,20,18,.04),0 8px 24px rgba(11,20,18,.06);
  --shadow-hover:0 12px 32px rgba(11,20,18,.10);
  --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,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(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-hover);}
img{max-width:100%;display:block;border-radius:var(--r-img);object-fit:cover;background:#EEF2F1;}
button{font:inherit;cursor:pointer;}
::selection{background:var(--brand-soft);color:var(--brand-deep);}
*{scrollbar-color:#0E7C6B #D7E0DE;scrollbar-width:thin;}
*::-webkit-scrollbar{width:10px;height:10px;}
*::-webkit-scrollbar-track{background:#D7E0DE;border-radius:999px;}
*::-webkit-scrollbar-thumb{background:#0E7C6B;border-radius:999px;border:2px solid #D7E0DE;}
:focus-visible{outline:3px solid rgba(18,150,127,.45);outline-offset:2px;border-radius:6px;}

/* ---------- 布局骨架 ---------- */
.layout-shell{padding-left:248px;min-height:100vh;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}
.main{padding-bottom:0;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{font-size:28px;line-height:1.3;font-weight:700;}
.section-head p{margin-top:12px;color:var(--ink-3);font-size:15.5px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-deep);
  background:var(--brand-soft);border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.eyebrow i{font-size:12px;}

/* ---------- 侧栏导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:248px;
  background:var(--dark);color:#cfdad8;z-index:60;
  display:flex;flex-direction:column;
  padding:22px 16px 18px;
  overflow-y:auto;
  border-right:1px solid rgba(255,255,255,.06);
}
.brand{display:flex;align-items:center;gap:10px;padding:6px 8px 20px;color:#fff;}
.brand:hover{color:#fff;}
.brand .logo-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 38px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#fff;font-size:16px;
  box-shadow:0 6px 16px rgba(14,124,107,.35);
}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.2px;line-height:1.3;}
.brand-text small{display:block;font-size:11px;font-weight:500;color:#8fa5a1;letter-spacing:.4px;}
.side-nav{display:flex;flex-direction:column;gap:6px;margin-top:8px;position:relative;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:var(--r-btn);
  color:#c3d1ce;font-size:15px;font-weight:500;transition:background .18s ease,color .18s ease;
}
.nav-item i{width:20px;font-size:15px;text-align:center;}
.nav-item:hover{background:rgba(230,244,240,.10);color:#fff;}
.nav-item.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600;}
.nav-item.active::before{
  content:"";position:absolute;left:-16px;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--brand);
}
.sidebar-foot{margin-top:auto;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);}
.sidebar-meta{font-family:var(--mono);font-size:11.5px;color:#7f938f;margin-top:12px;line-height:1.7;letter-spacing:.2px;}

/* ---------- 移动端顶栏与抽屉 ---------- */
.mobile-topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
  background:var(--dark);align-items:center;justify-content:space-between;
  padding:0 16px;border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-topbar .brand{padding:0;}
.mobile-topbar .brand-text{font-size:15px;}
.menu-toggle{
  width:44px;height:44px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.06);color:#fff;font-size:17px;
  display:grid;place-items:center;transition:background .18s ease;
}
.menu-toggle:hover{background:rgba(255,255,255,.14);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,20,18,.5);opacity:0;visibility:hidden;
  transition:opacity .22s ease,visibility .22s ease;z-index:65;
}
.drawer-mask.show{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn i{font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(11,20,18,.06);}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(0);filter:brightness(.95);}
.btn-outline{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-2px);box-shadow:var(--shadow);}
.btn-outline:active{transform:translateY(0);}
.btn-ghost{background:rgba(255,255,255,.08);color:#eef5f3;border-color:rgba(255,255,255,.22);}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;transform:translateY(-2px);box-shadow:0 12px 32px rgba(0,0,0,.35);}
.btn-ghost:active{transform:translateY(0);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#f0954c;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none!important;box-shadow:none;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:999px;padding:5px 12px;font-size:13px;font-weight:600;line-height:1.5;
}
.badge-soft{background:var(--brand-soft);color:var(--brand-deep);}
.badge-platform{background:var(--accent-soft);color:#A75A17;}
.badge-outline{background:#fff;border:1px solid var(--line);color:var(--ink-3);font-weight:500;}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13.5px;color:var(--ink-3);padding:32px 0 0;
}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:#C3CFCC;}

/* ---------- 页面首屏 ---------- */
.page-hero{
  display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
  padding:44px 0 0;
}
.page-hero h1{font-size:38px;line-height:1.28;font-weight:700;letter-spacing:-.3px;}
.page-hero .lede{margin-top:18px;font-size:16.5px;color:var(--ink-2);max-width:560px;}
.meta-line{
  margin-top:20px;font-family:var(--mono);font-size:13px;color:var(--ink-3);
  display:flex;flex-wrap:wrap;gap:8px 14px;
}
.meta-line span{display:inline-flex;align-items:center;gap:8px;}
.meta-line span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand);opacity:.55;}
.meta-line span:first-child::before{display:none;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px;}
.page-hero-media{position:relative;}
.page-hero-media img{
  width:100%;aspect-ratio:4/3;border-radius:var(--r-img);box-shadow:var(--shadow);object-fit:cover;
}
.page-hero-media::after{
  content:"";position:absolute;inset:auto -14px -14px auto;width:96px;height:96px;border-radius:20px;
  background-image:radial-gradient(var(--brand) 1.5px,transparent 1.5px);
  background-size:12px 12px;opacity:.35;z-index:-1;
}

/* ---------- 全宽图文块 ---------- */
.feature-block{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:88px 0;border-top:1px solid var(--line);
}
.feature-block:first-of-type{border-top:none;}
.feature-block.reverse .feature-media{order:2;}
.feature-block.reverse .feature-body{order:1;}
.feature-media img{width:100%;aspect-ratio:16/11;border-radius:var(--r-img);box-shadow:var(--shadow);}
.feature-body h2{font-size:28px;line-height:1.3;font-weight:700;position:relative;padding-left:16px;}
.feature-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--brand);
}
.feature-body p{margin-top:16px;color:var(--ink-2);max-width:640px;}
.point-list{margin-top:22px;display:grid;gap:12px;}
.point-list li{
  display:flex;gap:12px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:14px 18px;font-size:14.5px;color:var(--ink-2);box-shadow:0 1px 2px rgba(11,20,18,.03);
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.point-list li:hover{border-color:rgba(14,124,107,.3);transform:translateY(-2px);box-shadow:var(--shadow);}
.point-list i{color:var(--brand);font-size:14px;margin-top:5px;}
.point-list strong{color:var(--ink);font-weight:600;}

/* ---------- 参数对比网格 ---------- */
.spec-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
}
.spec-card{
  background:var(--surface);border:1px solid var(--line);border-top:3px solid var(--brand);
  border-radius:var(--r-card);padding:24px 26px;box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.spec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(14,124,107,.25);}
.spec-card h3{font-size:16px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:10px;}
.spec-card h3 i{color:var(--brand);font-size:15px;}
.spec-value{
  font-family:var(--mono);font-size:14.5px;color:var(--brand-deep);
  background:var(--brand-soft);border-radius:8px;padding:10px 12px;margin-top:14px;line-height:1.7;
  word-break:break-word;
}
.spec-card p{margin-top:12px;font-size:14px;color:var(--ink-3);line-height:1.75;}

/* ---------- 常见问题速览 ---------- */
.qa-list{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:8px 28px;box-shadow:var(--shadow);
}
.qa-item{
  display:grid;grid-template-columns:44px 1fr;gap:18px;
  padding:24px 0;border-bottom:1px solid var(--line);
}
.qa-item:last-child{border-bottom:none;}
.qa-num{
  width:34px;height:34px;border-radius:999px;display:grid;place-items:center;
  background:var(--accent-soft);color:#A75A17;
  font-family:var(--mono);font-size:14px;font-weight:700;
}
.qa-item h3{font-size:16.5px;font-weight:600;line-height:1.6;}
.qa-item p{margin-top:8px;font-size:15px;color:var(--ink-3);line-height:1.8;}

/* ---------- 通栏 CTA ---------- */
.cta-band{
  background:var(--dark);color:#dfe9e7;border-radius:24px;
  padding:56px 48px;text-align:center;
  box-shadow:0 20px 48px rgba(15,30,28,.24);
}
.cta-band h2{color:#fff;font-size:30px;line-height:1.32;font-weight:700;}
.cta-band p{margin-top:14px;color:#a9bcb8;font-size:15.5px;max-width:640px;margin-left:auto;margin-right:auto;}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:32px;}
.cta-note{
  margin-top:24px;font-family:var(--mono);font-size:12.5px;color:#7f938f;
  display:flex;gap:16px;justify-content:center;flex-wrap:wrap;
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#9fb1ad;padding:64px 0 0;margin-top:88px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;margin-bottom:16px;}
.footer-brand .logo-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-deep) 100%);color:#fff;font-size:14px;
}
.footer-desc{font-size:14px;line-height:1.9;color:#8fa5a1;max-width:340px;}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px;}
.footer-col ul{display:grid;gap:2px;}
.footer-col a{color:#9fb1ad;font-size:14px;line-height:1.9;display:inline-block;padding:2px 0;}
.footer-col a:hover{color:var(--brand-soft);}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 28px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#7f938f;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 24px;}
  .page-hero{gap:36px;}
  .page-hero h1{font-size:34px;}
  .cta-band{padding:48px 36px;}
}
@media (max-width:991px){
  .layout-shell{padding-left:0;padding-top:60px;}
  .mobile-topbar{display:flex;}
  .sidebar{
    transform:translateX(-100%);transition:transform .26s ease;
    width:280px;top:0;padding-top:20px;box-shadow:0 20px 60px rgba(0,0,0,.4);
  }
  .sidebar.open{transform:translateX(0);}
  .sidebar .brand{padding-top:0;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .page-hero{grid-template-columns:1fr;padding-top:28px;}
  .page-hero-media{order:2;}
  .page-hero h1{font-size:28px;}
  .feature-block{grid-template-columns:1fr;gap:28px;padding:56px 0;}
  .feature-block.reverse .feature-media{order:1;}
  .feature-block.reverse .feature-body{order:2;}
  .spec-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:44px 0;}
  .page-hero h1{font-size:26px;}
  .page-hero .lede{font-size:15.5px;}
  .section-head h2,.feature-body h2{font-size:22px;}
  .btn{width:100%;}
  .hero-actions,.cta-actions{flex-direction:column;align-items:stretch;}
  .spec-grid{grid-template-columns:1fr;gap:16px;}
  .qa-list{padding:4px 18px;}
  .qa-item{grid-template-columns:36px 1fr;gap:12px;padding:20px 0;}
  .qa-num{width:28px;height:28px;font-size:13px;}
  .cta-band{padding:36px 22px;border-radius:18px;}
  .cta-band h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .footer-desc{max-width:none;}
  .meta-line{font-size:12px;}
}