/* roulang page: index */
:root{
  --bg:#070B14;
  --bg2:#0C1220;
  --panel:#111A2B;
  --main:#23E0C0;
  --main-deep:#12A88F;
  --accent:#FFB25A;
  --text:#EAF0FA;
  --text2:#9AA9C0;
  --text3:#6B7C95;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(35,224,192,.35);
  --r-lg:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh:0 1px 0 rgba(255,255,255,.04) inset, 0 8px 24px rgba(0,0,0,.35);
  --sh-glow:0 0 0 1px rgba(35,224,192,.35), 0 10px 30px rgba(35,224,192,.16);
  --mono:"Space Grotesk",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--bg);
  background-image:radial-gradient(rgba(255,255,255,.045) 1px, transparent 1px);
  background-size:24px 24px;
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em;}
p{margin:0;}
input,select,textarea{font-family:inherit;}
::selection{background:rgba(35,224,192,.28);color:#fff;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
.gutter{margin-left:-12px;margin-right:-12px;}
.gutter > .cell{padding-left:12px;padding-right:12px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(7,11,20,.55);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.78);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.nh-wrap{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  height:68px;
  display:flex;
  align-items:center;
  gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--main),var(--main-deep));
  display:grid;place-items:center;
  box-shadow:0 0 16px rgba(35,224,192,.35);
}
.brand-mark::after{content:"";width:9px;height:9px;border-radius:50%;background:#061019;}
.brand-text{font-size:15px;font-weight:700;color:var(--text);white-space:nowrap;letter-spacing:.01em;}
.brand:hover .brand-text{color:var(--main);}
.main-nav{display:flex;align-items:center;gap:2px;flex:1 1 auto;min-width:0;}
.nav-link{
  position:relative;
  padding:10px 12px;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--text2);
  white-space:nowrap;
  transition:color .18s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;border-radius:2px;
  background:var(--main);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--main);}
.nav-right{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  width:206px;
  padding:7px 12px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.cmd-search i{font-size:12px;color:var(--text3);}
.cmd-search input{
  flex:1;min-width:0;border:0;outline:none;background:none;
  color:var(--text);font-size:13px;
}
.cmd-search input::placeholder{color:var(--text3);}
.cmd-search kbd{
  font-family:var(--mono);font-size:11px;color:var(--text3);
  border:1px solid var(--line);border-radius:6px;
  padding:1px 5px;background:rgba(255,255,255,.03);white-space:nowrap;
}
.cmd-search:focus-within{border-color:var(--main);box-shadow:0 0 0 4px rgba(35,224,192,.12);}
.icon-btn{
  width:36px;height:36px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--text2);border:1px solid var(--line);
  transition:color .18s,border-color .18s,background .18s;
}
.icon-btn:hover{color:var(--main);border-color:var(--line-strong);background:rgba(35,224,192,.06);}
.menu-toggle{
  display:none;
  width:38px;height:38px;border-radius:var(--r-sm);
  align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  color:var(--text);
  cursor:pointer;
}
.menu-toggle:hover{color:var(--main);border-color:var(--line-strong);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);
  padding:12px 24px;
  font-size:14px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{
  background:var(--main);color:#05130F;
  box-shadow:0 0 0 1px rgba(35,224,192,.20),0 8px 22px rgba(35,224,192,.16);
}
.btn-primary:hover{
  background:#3EECCD;color:#05130F;
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(35,224,192,.35),0 12px 30px rgba(35,224,192,.28);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(35,224,192,.25);}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--main);}
.btn-ghost:hover{background:rgba(35,224,192,.08);border-color:var(--main);}
.btn:focus-visible{outline:2px solid var(--main);outline-offset:2px;}
.btn-sm{padding:9px 18px;font-size:13px;}
.btn-block{width:100%;}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;z-index:198;
  background:rgba(4,7,12,.66);
  opacity:0;pointer-events:none;transition:opacity .3s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.mobile-drawer{
  position:fixed;top:0;right:0;z-index:199;
  width:min(330px,86vw);height:100%;
  background:var(--bg2);
  border-left:1px solid var(--line);
  padding:22px;
  overflow-y:auto;
  transform:translateX(100%);
  transition:transform .3s ease;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{
  width:34px;height:34px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--text2);cursor:pointer;
}
.drawer-close:hover{color:var(--main);}
.drawer-search{
  display:flex;align-items:center;gap:8px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  padding:9px 14px;margin-bottom:22px;
}
.drawer-search i{color:var(--text3);font-size:12px;}
.drawer-search input{flex:1;min-width:0;border:0;outline:none;background:none;color:var(--text);font-size:13px;}
.drawer-search input::placeholder{color:var(--text3);}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:24px;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 12px;border-radius:var(--r-sm);
  font-size:14px;color:var(--text2);
  border:1px solid transparent;
}
.drawer-nav a:hover{background:rgba(255,255,255,.04);color:var(--text);}
.drawer-nav a.is-active{color:var(--main);border-color:var(--line-strong);background:rgba(35,224,192,.06);}
.drawer-nav a i{font-size:11px;opacity:.6;}

/* ============ Hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  padding:88px 0 92px;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center center;
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.72) 0%,rgba(7,11,20,.86) 58%,var(--bg) 100%);
}
.hero::after{
  content:"";
  position:absolute;
  right:-180px;bottom:-220px;
  width:560px;height:560px;border-radius:50%;
  border:1px solid rgba(35,224,192,.16);
  box-shadow:0 0 0 60px rgba(35,224,192,.035),0 0 0 132px rgba(35,224,192,.022);
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;
  color:var(--main);
  border:1px solid var(--line-strong);
  border-radius:var(--r-pill);
  padding:6px 14px;
  background:rgba(35,224,192,.06);
}
.badge::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--main);box-shadow:0 0 8px rgba(35,224,192,.9);
}
.hero h1{
  margin:18px 0 0;
  font-size:clamp(32px,4.4vw,52px);
  line-height:1.15;
  letter-spacing:-.01em;
  font-weight:600;
}
.hero-sub{
  margin-top:20px;
  max-width:520px;
  font-size:17px;
  line-height:1.75;
  color:var(--text2);
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.trust-row li{
  font-size:12px;letter-spacing:.08em;
  color:var(--text2);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:6px 14px;
  background:rgba(255,255,255,.02);
}

/* 登录面板示意 */
.panel-wrap{position:relative;padding:6px 0;}
.panel-wrap::before{
  content:"";
  position:absolute;
  inset:22px -16px -16px 22px;
  border-radius:var(--r-lg);
  border:1px solid rgba(255,255,255,.06);
  background:rgba(17,26,43,.28);
}
.login-panel{
  position:relative;
  z-index:1;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:rgba(17,26,43,.55);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:22px;
  box-shadow:0 1px 0 rgba(255,255,255,.06) inset,0 24px 60px rgba(0,0,0,.45);
}
.panel-head{display:flex;align-items:center;gap:7px;margin-bottom:20px;}
.panel-head .dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.16);}
.panel-head .dot:nth-child(1){background:rgba(35,224,192,.7);}
.panel-title{
  margin-left:auto;
  font-size:11px;letter-spacing:.14em;color:var(--text3);
}
.panel-field{
  display:flex;align-items:center;gap:10px;
  padding:13px 14px;
  border-radius:var(--r-sm);
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  color:var(--text3);
  font-size:13px;
  margin-bottom:12px;
}
.panel-field i{font-size:12px;color:var(--main-deep);}
.panel-btn{
  margin-top:18px;
  text-align:center;
  padding:13px;
  border-radius:var(--r-pill);
  background:var(--main);
  color:#05130F;
  font-size:14px;font-weight:600;
  letter-spacing:.04em;
}
.panel-note{
  margin-top:14px;
  font-size:11px;
  line-height:1.7;
  color:var(--text3);
  letter-spacing:.02em;
}

/* ============ 通用板块 ============ */
.section{padding:96px 0;position:relative;}
.section-alt{background:linear-gradient(180deg,rgba(12,18,32,0),rgba(12,18,32,.72),rgba(12,18,32,0));}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;flex-wrap:wrap;margin-bottom:44px;
}
.kicker{
  display:inline-block;
  font-size:12px;letter-spacing:.16em;
  color:var(--main);
  margin-bottom:10px;
  text-transform:uppercase;
}
.sec-head h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.28;
  letter-spacing:-.01em;
}
.sec-note{
  max-width:380px;
  font-size:14px;
  line-height:1.8;
  color:var(--text2);
}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--main);letter-spacing:.04em;
  white-space:nowrap;
}
.text-link i{font-size:11px;transition:transform .2s ease;}
.text-link:hover i{transform:translateX(4px);}
.text-link:hover{color:#3EECCD;}

/* 服务能力 */
.cap-grid{display:flex;flex-wrap:wrap;}
.cap-main{
  height:100%;
  display:flex;flex-direction:column;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:20px;
  box-shadow:var(--sh);
  transition:border-color .18s ease,transform .18s ease;
}
.cap-main:hover{border-color:rgba(35,224,192,.30);transform:translateY(-2px);}
.cap-media{
  border-radius:var(--r-sm);
  overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--line);
  margin-bottom:18px;
}
.cap-media img{width:100%;height:100%;object-fit:cover;}
.cap-main h3{font-size:20px;line-height:1.45;margin-bottom:10px;}
.cap-main p{font-size:14px;line-height:1.8;color:var(--text2);}
.cap-smalls{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
  height:100%;
}
.cap-sm{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:20px;
  box-shadow:var(--sh);
  transition:border-color .18s ease,transform .18s ease;
}
.cap-sm:hover{border-color:rgba(35,224,192,.30);transform:translateY(-2px);}
.cap-sm h4{font-size:18px;line-height:1.5;margin-bottom:8px;font-weight:600;}
.cap-sm p{font-size:13.5px;line-height:1.8;color:var(--text2);}
.cap-ico{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  background:rgba(35,224,192,.08);
  border:1px solid var(--line-strong);
  color:var(--main);
  font-size:13px;
  margin-bottom:14px;
}

/* 数据条 */
.data-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.data-item{padding:34px 24px;border-left:1px solid var(--line);}
.data-item:first-child{border-left:0;}
.data-num{
  font-family:var(--mono);
  font-size:40px;
  line-height:1.1;
  font-weight:600;
  letter-spacing:-.02em;
  color:var(--main);
}
.data-lab{margin-top:8px;font-size:13px;color:var(--text2);letter-spacing:.02em;}

/* 资讯卡片 */
.post-card{
  position:relative;
  display:flex;flex-direction:column;
  height:100%;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:20px;
  box-shadow:var(--sh);
  transition:border-color .18s ease,transform .18s ease;
}
.post-card:hover{border-color:rgba(35,224,192,.30);transform:translateY(-2px);}
.cat-badge{
  position:absolute;top:16px;right:16px;
  font-size:11px;letter-spacing:.06em;
  color:var(--accent);
  border:1px solid rgba(255,178,90,.40);
  background:rgba(255,178,90,.08);
  border-radius:var(--r-pill);
  padding:3px 10px;
  max-width:120px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.post-link{display:block;color:inherit;flex:1;padding-top:28px;}
.post-title{
  font-size:17px;
  line-height:1.55;
  font-weight:600;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  padding-right:0;
}
.post-card:hover .post-title{color:var(--main);}
.post-excerpt{
  margin-top:8px;
  font-size:13.5px;
  line-height:1.8;
  color:var(--text2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-foot{
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid var(--line);
}
.post-time{
  font-family:var(--mono);
  font-size:12px;
  color:var(--text3);
  letter-spacing:.02em;
}
.read-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--main);
}
.read-more i{font-size:10px;transition:transform .2s ease;}
.read-more:hover i{transform:translateX(3px);}
.empty-state{
  border:1px dashed rgba(255,255,255,.16);
  border-radius:var(--r-lg);
  padding:56px 24px;
  text-align:center;
  background:rgba(255,255,255,.015);
}
.empty-state p{font-size:15px;color:var(--text2);margin-bottom:20px;}

/* 案例 */
.case-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:20px;
  grid-auto-rows:minmax(178px,auto);
}
.case-item{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--panel);
  padding:22px;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  min-height:178px;
  transition:border-color .18s ease,transform .18s ease;
}
.case-item:hover{border-color:rgba(35,224,192,.30);transform:translateY(-2px);}
.case-item img{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;opacity:.40;
  transition:opacity .25s ease;
}
.case-item:hover img{opacity:.52;}
.case-item::after{
  content:"";
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(7,11,20,.20) 0%,rgba(7,11,20,.90) 100%);
}
.case-body{position:relative;z-index:2;}
.case-item:nth-child(1){grid-column:span 7;grid-row:span 2;min-height:376px;}
.case-item:nth-child(2){grid-column:span 5;}
.case-item:nth-child(3){grid-column:span 5;}
.case-item:nth-child(4){grid-column:span 6;}
.case-item:nth-child(5){grid-column:span 6;}
.tag{
  display:inline-block;
  font-size:11px;letter-spacing:.1em;
  color:var(--main);
  border:1px solid var(--line-strong);
  border-radius:var(--r-pill);
  padding:3px 10px;
  margin-bottom:10px;
  background:rgba(7,11,20,.45);
}
.case-item h3{font-size:18px;line-height:1.45;margin-bottom:6px;}
.case-item p{font-size:13.5px;line-height:1.75;color:var(--text2);}

/* 方案步骤 */
.steps{max-width:920px;}
.step{
  display:grid;
  grid-template-columns:96px 1fr;
  gap:24px;
  padding:28px 0;
  border-top:1px solid var(--line);
}
.step:last-child{border-bottom:1px solid var(--line);}
.step-num{
  font-family:var(--mono);
  font-size:38px;
  line-height:1;
  font-weight:600;
  color:rgba(35,224,192,.28);
  letter-spacing:-.02em;
}
.step h3{font-size:20px;line-height:1.45;margin-bottom:8px;}
.step p{font-size:14.5px;line-height:1.85;color:var(--text2);}

/* FAQ */
.faq-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0 48px;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;align-items:center;gap:16px;
  min-height:64px;
  padding:14px 0;
  background:none;border:0;
  color:var(--text);
  font-size:18px;
  font-weight:500;
  line-height:1.5;
  text-align:left;
  cursor:pointer;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--main);}
.faq-q:focus-visible{outline:2px solid var(--main);outline-offset:2px;border-radius:6px;}
.faq-q .idx{
  flex:0 0 auto;
  font-family:var(--mono);
  font-size:13px;
  color:var(--text3);
}
.faq-q .plus{
  margin-left:auto;
  flex:0 0 auto;
  color:var(--main);
  font-size:16px;
  transition:transform .24s ease;
}
.faq-item.is-open .plus{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 0 20px 37px;
  font-size:15px;
  line-height:1.85;
  color:var(--text2);
}

/* 联系 */
.contact-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:28px;
  align-items:start;
}
.form-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:32px;
  box-shadow:var(--sh);
}
.form-card h3{font-size:20px;margin-bottom:8px;}
.form-tip{font-size:13px;color:var(--text3);margin-bottom:24px;}
.field{margin-bottom:20px;}
.field label{display:block;font-size:13px;color:var(--text2);margin-bottom:8px;letter-spacing:.02em;}
.field input,.field select,.field textarea{
  width:100%;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:14px;
  color:var(--text);
  font-size:14px;
  line-height:1.6;
  outline:none;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field textarea{min-height:110px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--text3);}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--main);
  box-shadow:0 0 0 4px rgba(35,224,192,.12);
  background:rgba(255,255,255,.06);
}
.field select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text3) 50%),linear-gradient(135deg,var(--text3) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field select option{background:var(--bg2);color:var(--text);}
.info-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:32px;
  box-shadow:var(--sh);
}
.info-card h3{font-size:18px;margin-bottom:18px;}
.info-row{
  display:flex;gap:12px;
  padding:16px 0;
  border-top:1px solid var(--line);
}
.info-row:first-of-type{border-top:0;padding-top:0;}
.info-row i{
  flex:0 0 auto;
  width:32px;height:32px;border-radius:9px;
  display:grid;place-items:center;
  background:rgba(35,224,192,.08);
  border:1px solid var(--line-strong);
  color:var(--main);
  font-size:12px;
}
.info-row b{display:block;font-size:14px;font-weight:600;margin-bottom:2px;}
.info-row span{font-size:13px;line-height:1.75;color:var(--text2);}

/* 页脚 */
.site-footer{
  background:var(--bg2);
  border-top:1px solid var(--line);
  padding:72px 0 0;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.15fr;
  gap:40px;
  padding-bottom:56px;
}
.f-brand .brand{margin-bottom:16px;}
.f-desc{font-size:14px;line-height:1.85;color:var(--text2);max-width:320px;}
.f-title{
  font-size:13px;
  letter-spacing:.12em;
  color:var(--text);
  margin-bottom:18px;
  font-weight:600;
}
.f-list li{margin-bottom:11px;}
.f-list a{font-size:14px;color:var(--text2);}
.f-list a:hover{color:var(--main);}
.f-p{font-size:14px;line-height:1.85;color:var(--text2);margin-bottom:10px;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:24px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.copy{font-size:13px;color:var(--text3);}
.f-key{font-size:13px;color:var(--text3);}
.f-key a{color:var(--text2);}
.f-key a:hover{color:var(--main);}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .main-nav{display:none;}
  .cmd-search{display:none;}
  .nav-right .icon-btn{display:none;}
  .menu-toggle{display:inline-flex;}
  .hero{padding:64px 0 68px;}
  .hero::after{display:none;}
  .section{padding:64px 0;}
  .sec-head{margin-bottom:32px;}
  .cap-grid{display:block;}
  .cap-main{margin-bottom:20px;}
  .cap-smalls{margin-top:0;}
  .data-strip{grid-template-columns:1fr 1fr;}
  .data-item:nth-child(3){border-left:0;border-top:1px solid var(--line);}
  .data-item:nth-child(4){border-top:1px solid var(--line);}
  .case-grid{grid-template-columns:repeat(6,1fr);grid-auto-rows:minmax(170px,auto);}
  .case-item:nth-child(1){grid-column:span 6;grid-row:span 1;min-height:260px;}
  .case-item:nth-child(2),.case-item:nth-child(3){grid-column:span 3;}
  .case-item:nth-child(4),.case-item:nth-child(5){grid-column:span 3;}
  .faq-grid{grid-template-columns:1fr;gap:0;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .f-brand{grid-column:1 / -1;}
}
@media screen and (max-width:767px){
  .container,.nh-wrap{padding-left:20px;padding-right:20px;}
  .brand-text{font-size:13px;}
  .hero{padding:48px 0 52px;}
  .hero-sub{font-size:15.5px;}
  .hero-cta .btn{flex:1 1 100%;}
  .section{padding:44px 0;}
  .sec-head{align-items:flex-start;flex-direction:column;gap:12px;margin-bottom:26px;}
  .sec-note{max-width:100%;}
  .cap-smalls{grid-template-columns:1fr;}
  .data-strip{grid-template-columns:1fr;}
  .data-item{border-left:0;border-top:1px solid var(--line);padding:24px 20px;}
  .data-item:first-child{border-top:0;}
  .data-num{font-size:34px;}
  .case-grid{grid-template-columns:1fr;grid-auto-rows:auto;}
  .case-item:nth-child(n){grid-column:span 1;grid-row:span 1;min-height:200px;}
  .step{grid-template-columns:1fr;gap:8px;padding:22px 0;}
  .step-num{font-size:26px;}
  .faq-q{font-size:16px;min-height:58px;gap:12px;}
  .faq-a p{padding-left:0;}
  .form-card,.info-card{padding:24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .site-footer{padding-top:48px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .post-card{padding:18px;}
  .post-link{padding-top:26px;}
}
@media screen and (max-width:480px){
  body{background-image:none;}
  .btn{width:100%;}
  .hero-cta{flex-direction:column;}
  .trust-row li{font-size:11px;padding:5px 11px;}
  .post-title{font-size:16px;}
}

/* roulang page: article */
:root{
  --bg-1:#070B14;
  --bg-2:#0C1220;
  --panel:#111A2B;
  --panel-2:#0E1626;
  --primary:#23E0C0;
  --primary-dark:#12A88F;
  --accent:#FFB25A;
  --text:#EAF0FA;
  --muted:#9AA9C0;
  --weak:#6B7C95;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(35,224,192,.35);
  --r-lg:16px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset, 0 8px 24px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(35,224,192,.35), 0 10px 30px rgba(35,224,192,.16);
  --container:1200px;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"Space Grotesk",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  min-height:100vh;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background-color:var(--bg-1);
  background-image:
    linear-gradient(rgba(255,255,255,.030) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.030) 1px, transparent 1px),
    radial-gradient(900px 520px at 12% -8%, rgba(35,224,192,.09), transparent 62%),
    radial-gradient(760px 440px at 94% 0%, rgba(255,178,90,.06), transparent 60%);
  background-size:24px 24px, 24px 24px, auto, auto;
  background-repeat:repeat, repeat, no-repeat, no-repeat;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:1.15em;}
::selection{background:rgba(35,224,192,.28);color:#fff;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ===== 顶部命令栏 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(7,11,20,.58);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.78);
  border-bottom-color:var(--line);
  box-shadow:0 10px 28px rgba(0,0,0,.32);
}
.header-inner{display:flex;align-items:center;gap:18px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);flex-shrink:0;}
.brand-mark{
  position:relative;width:22px;height:22px;border-radius:var(--r-sm);
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  box-shadow:0 0 18px rgba(35,224,192,.42);
  flex-shrink:0;
}
.brand-mark::after{content:"";position:absolute;inset:6px;border-radius:50%;border:2px solid rgba(7,11,20,.78);}
.brand-text{font-size:16px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:6px;}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--muted);
  text-decoration:none;
  border-radius:var(--r-pill);
  transition:color .18s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--primary);border-radius:var(--r-pill);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary);}
.header-tools{display:flex;align-items:center;gap:10px;margin-left:auto;}
.command-search{
  display:flex;align-items:center;gap:8px;
  height:36px;padding:0 10px 0 12px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.03);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.command-search:focus-within{
  border-color:var(--line-strong);
  background:rgba(35,224,192,.05);
  box-shadow:0 0 0 3px rgba(35,224,192,.10);
}
.command-search svg{width:14px;height:14px;stroke:var(--weak);fill:none;stroke-width:2;flex-shrink:0;}
.command-search input{
  width:138px;background:none;border:0;outline:none;
  color:var(--text);font-size:13px;font-family:inherit;
}
.command-search input::placeholder{color:var(--weak);}
.command-search .kbd{
  font-family:var(--font-mono);font-size:11px;color:var(--weak);
  border:1px solid var(--line);border-radius:var(--r-pill);padding:0 6px;line-height:16px;
}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--muted);cursor:pointer;
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.icon-btn:hover{color:var(--primary);border-color:var(--line-strong);background:rgba(35,224,192,.07);}
.icon-btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;}
.search-toggle{display:none;}
.nav-toggle{display:none;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;
  border-radius:var(--r-pill);
  font-size:14px;font-weight:600;font-family:inherit;
  text-decoration:none;cursor:pointer;border:1px solid transparent;
  transition:background .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease,color .18s ease;
}
.btn-primary{background:var(--primary);color:#06120F;box-shadow:0 6px 18px rgba(35,224,192,.18);}
.btn-primary:hover{background:#3ceacd;color:#06120F;box-shadow:var(--shadow-glow);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-primary:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--primary);}
.btn-ghost:hover{background:rgba(35,224,192,.08);border-color:var(--primary);}
.btn-sm{height:34px;padding:0 16px;font-size:13px;}

/* ===== 移动抽屉 ===== */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(4,7,12,.66);
  opacity:0;visibility:hidden;transition:opacity .26s ease,visibility .26s ease;z-index:90;
}
.drawer-overlay.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);
  background:var(--bg-2);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .28s ease;
  z-index:95;padding:20px;display:none;flex-direction:column;gap:8px;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:6px;}
.drawer-close{
  width:34px;height:34px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:transparent;color:var(--muted);font-size:18px;line-height:1;cursor:pointer;
}
.drawer-close:hover{color:var(--primary);border-color:var(--line-strong);}
.drawer-nav{display:flex;flex-direction:column;gap:2px;}
.drawer-nav a{
  padding:12px 10px;border-radius:var(--r-sm);
  font-size:15px;color:var(--muted);text-decoration:none;
  transition:background .18s ease,color .18s ease;
}
.drawer-nav a:hover,.drawer-nav a.is-active{background:rgba(35,224,192,.08);color:var(--primary);}
.drawer-note{margin-top:auto;font-size:13px;color:var(--weak);line-height:1.8;padding-top:16px;border-top:1px solid var(--line);}

/* ===== 面包屑 ===== */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--weak);padding:26px 0 0;
}
.breadcrumb a{color:var(--muted);text-decoration:none;transition:color .18s ease;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--weak);opacity:.55;}
.breadcrumb .current{color:var(--text);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ===== 文章标题区 ===== */
.article-hero{padding:26px 0 38px;border-bottom:1px solid var(--line);}
.article-hero-inner{max-width:900px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  background:rgba(35,224,192,.06);
  color:var(--primary);
  font-size:12px;letter-spacing:.08em;
}
.badge-accent{border-color:rgba(255,178,90,.42);background:rgba(255,178,90,.07);color:var(--accent);}
.article-title{
  margin:18px 0 18px;
  font-size:clamp(27px,3.6vw,42px);
  line-height:1.24;
  letter-spacing:-.01em;
  font-weight:700;
  color:#fff;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 22px;font-size:13px;color:var(--weak);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--weak);opacity:.6;}
.article-meta strong{color:var(--muted);font-weight:500;}

/* ===== 正文布局 ===== */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,760px) 280px;
  gap:56px;
  justify-content:start;
  padding:48px 0 64px;
}
.article-layout--empty{grid-template-columns:minmax(0,760px);}

.article-body{font-size:16.5px;line-height:1.9;color:#D8E2F0;min-width:0;}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  position:relative;
  margin:2em 0 .8em;
  padding-left:14px;
  font-size:26px;line-height:1.4;font-weight:600;color:#fff;letter-spacing:-.005em;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;
  background:var(--primary);border-radius:var(--r-pill);
}
.article-body h3{margin:1.6em 0 .6em;font-size:20px;font-weight:600;color:#fff;}
.article-body h4{margin:1.4em 0 .5em;font-size:17px;font-weight:600;color:#fff;}
.article-body p{margin:1.2em 0;}
.article-body a{color:var(--primary);text-decoration:none;border-bottom:1px solid rgba(35,224,192,.3);transition:border-color .18s ease,color .18s ease;}
.article-body a:hover{color:#3ceacd;border-bottom-color:var(--primary);}
.article-body ul,.article-body ol{margin:1.2em 0;line-height:1.8;}
.article-body li{margin:.45em 0;}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;
  background:rgba(35,224,192,.055);
  border-left:3px solid var(--accent);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:#C9D6E8;
}
.article-body blockquote p{margin:.4em 0;}
.article-body img{border-radius:var(--r-sm);margin:1.6em 0 12px;width:100%;border:1px solid var(--line);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--weak);margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:14.5px;}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;}
.article-body th{color:var(--text);font-weight:600;background:rgba(255,255,255,.03);}
.article-body td{color:var(--muted);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0;}
.article-body code{
  font-family:var(--font-mono);font-size:.9em;
  background:rgba(255,255,255,.06);border:1px solid var(--line);
  border-radius:var(--r-pill);padding:1px 7px;color:var(--primary);
}

/* ===== 空态 ===== */
.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--r-lg);
  padding:56px 24px;
  text-align:center;
  background:rgba(255,255,255,.015);
}
.empty-state .empty-title{font-size:20px;font-weight:600;color:#fff;margin:0 0 10px;}
.empty-state .empty-desc{font-size:14px;color:var(--muted);margin:0 0 22px;}

/* ===== 侧栏 ===== */
.article-aside{position:sticky;top:96px;align-self:start;display:flex;flex-direction:column;gap:18px;}
.aside-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:18px;
  box-shadow:var(--shadow-card);
}
.aside-title{
  margin:0 0 12px;font-size:12px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--weak);font-weight:600;
}
.aside-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;}
.aside-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 10px;border-radius:var(--r-sm);
  font-size:14px;color:var(--muted);text-decoration:none;
  transition:background .18s ease,color .18s ease;
}
.aside-list a:hover{background:rgba(35,224,192,.08);color:var(--primary);}
.aside-list .arrow{font-family:var(--font-mono);font-size:12px;opacity:.6;}
.aside-text{font-size:13.5px;line-height:1.8;color:var(--muted);margin:0;}
.aside-card--accent{border-color:rgba(255,178,90,.32);background:rgba(255,178,90,.05);}
.aside-card--accent .aside-title{color:var(--accent);}

/* ===== 相关推荐 ===== */
.related{padding:8px 0 76px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px;flex-wrap:wrap;}
.section-title{margin:0;font-size:26px;font-weight:600;letter-spacing:-.005em;color:#fff;}
.section-sub{margin:6px 0 0;font-size:14px;color:var(--muted);}
.section-more{font-size:13px;color:var(--primary);text-decoration:none;letter-spacing:.04em;transition:opacity .18s ease;}
.section-more:hover{opacity:.8;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  position:relative;display:flex;flex-direction:column;height:100%;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.card:hover{
  transform:translateY(-2px);
  border-color:rgba(35,224,192,.30);
  box-shadow:0 0 0 1px rgba(35,224,192,.16),0 12px 28px rgba(0,0,0,.42);
}
.card-media{aspect-ratio:16/10;overflow:hidden;background:var(--panel-2);border-bottom:1px solid var(--line);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:filter .25s ease;}
.card:hover .card-media img{filter:brightness(1.08);}
.card-tag{
  position:absolute;top:12px;right:12px;z-index:2;
  height:24px;padding:0 10px;display:inline-flex;align-items:center;
  border-radius:var(--r-pill);
  border:1px solid rgba(255,178,90,.45);
  background:rgba(11,17,29,.82);
  color:var(--accent);font-size:11px;letter-spacing:.06em;
}
.card-body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.card-title{margin:0;font-size:17px;line-height:1.5;font-weight:600;color:var(--text);}
.card-title a{color:inherit;text-decoration:none;transition:color .18s ease;}
.card:hover .card-title a{color:var(--primary);}
.card-desc{
  margin:0;font-size:14px;line-height:1.7;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12px;color:var(--weak);font-family:var(--font-mono);letter-spacing:.04em;
}
.card-foot .read{color:var(--primary);text-decoration:none;font-family:var(--font-sans);font-size:13px;}
.card-foot .read:hover{text-decoration:underline;}

/* ===== 返回入口 ===== */
.back-bar{
  border-top:1px solid var(--line);
  padding:28px 0 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-bottom:64px;
}
.back-text{font-size:14px;color:var(--muted);}

/* ===== 页脚 ===== */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-2);
  padding:56px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.25fr;gap:36px;}
.site-footer .brand{margin-bottom:14px;}
.f-desc,.f-p{margin:0 0 10px;font-size:14px;line-height:1.8;color:var(--muted);}
.f-title{margin:0 0 14px;font-size:13px;letter-spacing:.12em;color:var(--weak);font-weight:600;}
.f-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px;}
.f-list a{color:var(--muted);text-decoration:none;font-size:14px;transition:color .18s ease;}
.f-list a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;
  font-size:13px;color:var(--weak);
}
.footer-bottom .copy{margin:0;}
.f-key{margin:0;}
.f-key a{color:var(--weak);text-decoration:none;transition:color .18s ease;}
.f-key a:hover{color:var(--primary);}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .container{padding:0 22px;}
  .main-nav{gap:0;}
  .nav-link{font-size:12.5px;padding:8px 9px;}
  .nav-link::after{left:9px;right:9px;}
  .command-search input{width:88px;}
  .command-search .kbd{display:none;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px;}
  .article-aside{position:static;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .header-inner{height:60px;gap:10px;}
  .main-nav{display:none;}
  .command-search{display:none;}
  .header-tools .btn-sm{display:none;}
  .nav-toggle,.search-toggle{display:inline-flex;}
  .mobile-drawer{display:flex;}
  .site-header.is-search-open .command-search{
    display:flex;position:absolute;left:20px;right:20px;top:calc(100% + 8px);
    height:44px;padding:0 14px;background:var(--bg-2);
    border-color:var(--line-strong);box-shadow:0 12px 28px rgba(0,0,0,.45);
  }
  .site-header.is-search-open .command-search input{width:100%;font-size:14px;}
  .breadcrumb{padding-top:20px;font-size:12.5px;}
  .article-hero{padding:18px 0 28px;}
  .article-title{font-size:25px;margin:14px 0 14px;}
  .article-layout{padding:32px 0 48px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .related{padding-bottom:52px;}
  .back-bar{margin-bottom:44px;}
  .back-bar .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .site-footer{padding:44px 0 22px;}
  .article-aside{gap:14px;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;max-width:150px;overflow:hidden;text-overflow:ellipsis;}
  .article-meta{gap:6px 14px;font-size:12.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .btn{width:100%;}
  .header-tools .icon-btn,.nav-toggle{width:40px;height:40px;}
  body{background-image:none;background-color:var(--bg-1);}
}

/* roulang page: category1 */
:root{
  --bg-1:#070B14;
  --bg-2:#0C1220;
  --panel:#111A2B;
  --panel-2:#0E1726;
  --primary:#23E0C0;
  --primary-deep:#12A88F;
  --accent:#FFB25A;
  --text:#EAF0FA;
  --text-2:#9AA9C0;
  --text-3:#6B7C95;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(35,224,192,.35);
  --r-lg:16px;
  --r-md:12px;
  --r-pill:999px;
  --shadow:0 1px 0 rgba(255,255,255,.04) inset, 0 8px 24px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(35,224,192,.35), 0 10px 30px rgba(35,224,192,.16);
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Space Grotesk","SFMono-Regular",Consolas,monospace;
  --section-y:96px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-1);
  color:var(--text);
  font-family:var(--font-sans);
  font-weight:400;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(circle at 18% 8%, rgba(35,224,192,.10), transparent 42%),
    radial-gradient(circle at 88% 0%, rgba(255,178,90,.07), transparent 38%),
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:auto, auto, 24px 24px, 24px 24px;
  opacity:.55;
}
img{max-width:100%;display:block;border-radius:var(--r-md);}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul{list-style:none;padding:0;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
  position:relative;
  z-index:1;
}
.section{padding:var(--section-y) 0;position:relative;z-index:1;}
.section-alt{background:linear-gradient(180deg, rgba(12,18,32,0) 0%, rgba(12,18,32,.9) 22%, rgba(12,18,32,.9) 78%, rgba(12,18,32,0) 100%);}
.section-head{margin-bottom:40px;max-width:760px;}
.section-eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--primary);font-family:var(--font-num);margin-bottom:12px;
}
h2.section-title{font-size:clamp(26px,2.6vw,34px);font-weight:600;line-height:1.25;letter-spacing:-.01em;}
.section-title .accent{color:var(--primary);}
.section-desc{margin-top:14px;color:var(--text-2);font-size:15.5px;line-height:1.85;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-pill);
  font-size:14px;font-weight:500;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease-out, box-shadow .18s ease-out, background .18s ease-out, color .18s ease-out, border-color .18s ease-out, filter .18s ease-out;
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary);color:#04140F;border-color:var(--primary);
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(35,224,192,.45),0 14px 36px rgba(35,224,192,.24);color:#04140F;}
.btn-primary:active{transform:translateY(0);box-shadow:none;filter:brightness(.98);}
.btn-ghost{
  background:transparent;color:var(--text);border-color:var(--line-strong);
}
.btn-ghost:hover{background:rgba(35,224,192,.08);border-color:var(--primary);color:var(--primary);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);background:rgba(35,224,192,.04);}
.btn-sm{height:38px;padding:0 18px;font-size:13px;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.06em;
  border:1px solid var(--line-strong);color:var(--primary);
  background:transparent;
}
.badge-accent{border-color:rgba(255,178,90,.4);color:var(--accent);}
.badge-solid{background:rgba(35,224,192,.1);}
.badge i{font-size:11px;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,20,.72);
  border-bottom:1px solid transparent;
  transition:background .22s ease, border-color .22s ease, backdrop-filter .22s ease;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.82);
  border-bottom-color:var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.header-inner{
  height:68px;display:flex;align-items:center;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:12px;height:12px;border-radius:3px;background:var(--primary);
  box-shadow:0 0 0 4px rgba(35,224,192,.14),0 0 16px rgba(35,224,192,.6);
  flex-shrink:0;
}
.brand-text{font-size:15px;font-weight:600;letter-spacing:.01em;color:var(--text);white-space:nowrap;}
.brand-text-short{display:none;font-size:15px;font-weight:600;color:var(--text);white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-link{
  position:relative;font-size:13px;letter-spacing:.04em;color:var(--text-2);
  padding:6px 0;transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left center;
  transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary);}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.command-search{
  display:flex;align-items:center;gap:8px;
  height:38px;padding:0 8px 0 14px;min-width:210px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:border-color .18s ease, box-shadow .18s ease;
}
.command-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(35,224,192,.14);}
.command-search i{color:var(--text-3);font-size:12px;}
.command-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;color:var(--text);font-size:13px;height:100%;
}
.command-search input::placeholder{color:var(--text-3);}
.command-search kbd{
  font-family:var(--font-num);font-size:11px;color:var(--text-3);
  border:1px solid var(--line);border-radius:6px;padding:2px 6px;background:rgba(255,255,255,.03);
}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-pill);border:1px solid var(--line);background:transparent;color:var(--text-2);
  cursor:pointer;transition:all .18s ease-out;
}
.icon-btn:hover{color:var(--primary);border-color:var(--line-strong);background:rgba(35,224,192,.06);}
.nav-toggle{
  display:none;width:40px;height:38px;border-radius:10px;border:1px solid var(--line);
  background:transparent;cursor:pointer;padding:0 10px;
  flex-direction:column;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;height:2px;background:var(--text-2);border-radius:2px;transition:background .18s ease;}
.nav-toggle:hover span{background:var(--primary);}

/* 移动端搜索行 */
.mobile-search-row{
  display:none;padding:0 0 14px;
}
.mobile-search-row.is-open{display:block;}
.mobile-search-row .command-search{min-width:0;width:100%;}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:var(--bg-2);border-left:1px solid var(--line);
  z-index:120;transform:translateX(105%);
  transition:transform .28s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-head .drawer-title{font-size:13px;letter-spacing:.12em;color:var(--text-3);text-transform:uppercase;font-family:var(--font-num);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-top:16px;}
.drawer-nav a{
  padding:12px 14px;border-radius:var(--r-md);font-size:14.5px;color:var(--text-2);
  border:1px solid transparent;transition:all .18s ease-out;
}
.drawer-nav a:hover{background:rgba(35,224,192,.07);border-color:var(--line);color:var(--primary);}
.drawer-nav a.is-active{color:var(--primary);border-color:var(--line-strong);background:rgba(35,224,192,.06);}
.drawer .btn{margin-top:18px;width:100%;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,7,13,.7);z-index:110;
  opacity:0;visibility:hidden;transition:opacity .28s ease, visibility .28s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ============ 面包屑 ============ */
.breadcrumb-wrap{padding:22px 0 0;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--text-3);opacity:.6;}
.breadcrumb .current{color:var(--text);}

/* ============ Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  min-height:380px;
  display:flex;align-items:center;
  padding:44px 0 52px;
  border-bottom:1px solid var(--line);
}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.34;filter:saturate(.85);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(105deg, rgba(7,11,20,.94) 0%, rgba(7,11,20,.82) 48%, rgba(7,11,20,.66) 100%),
    repeating-linear-gradient(0deg, rgba(255,255,255,.03) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.03) 0 1px, transparent 1px 24px);
  pointer-events:none;
}
.page-hero::before{
  content:"";position:absolute;right:-120px;bottom:-160px;width:520px;height:520px;border-radius:50%;
  background:
    radial-gradient(circle, transparent 58%, rgba(35,224,192,.16) 59%, transparent 60%),
    radial-gradient(circle, transparent 72%, rgba(35,224,192,.12) 73%, transparent 74%),
    radial-gradient(circle, transparent 86%, rgba(35,224,192,.08) 87%, transparent 88%);
  pointer-events:none;z-index:0;
}
.page-hero .container{position:relative;z-index:2;}
.hero-copy h1{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.18;letter-spacing:-.01em;font-weight:600;
  margin:16px 0 16px;
}
.hero-sub{color:var(--text-2);font-size:16px;line-height:1.8;max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-figure{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);position:relative;
}
.hero-figure img{width:100%;height:240px;object-fit:cover;border-radius:0;}
.hero-figure::after{
  content:"";position:absolute;inset:0;background:linear-gradient(180deg, rgba(7,11,20,0) 42%, rgba(7,11,20,.62) 100%);
  pointer-events:none;
}
.hero-tag{
  position:absolute;left:16px;bottom:16px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;color:var(--text);
  padding:6px 12px;border-radius:var(--r-pill);
  background:rgba(7,11,20,.62);border:1px solid var(--line);
}
.hero-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(35,224,192,.9);}

/* ============ 目录 + 步骤 ============ */
.steps-layout{padding-top:72px;}
.toc{
  position:sticky;top:92px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:20px 18px;
  box-shadow:var(--shadow);
}
.toc-title{
  font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--text-3);font-family:var(--font-num);margin-bottom:14px;
}
.toc ul{display:flex;flex-direction:column;gap:2px;}
.toc-link{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:var(--r-md);
  font-size:13.5px;color:var(--text-2);
  transition:all .18s ease-out;
}
.toc-link .n{font-family:var(--font-num);font-size:11px;color:var(--text-3);letter-spacing:.06em;}
.toc-link:hover{background:rgba(255,255,255,.04);color:var(--text);}
.toc-link.is-active{background:rgba(35,224,192,.08);color:var(--primary);}
.toc-link.is-active .n{color:var(--primary);}
.toc-note{
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--text-3);line-height:1.7;
}

.step-list{display:flex;flex-direction:column;gap:16px;}
.step-card{
  display:flex;gap:22px;align-items:flex-start;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px 26px;
  box-shadow:var(--shadow);
  transition:border-color .18s ease-out, transform .18s ease-out, box-shadow .18s ease-out;
  scroll-margin-top:96px;
}
.step-card:hover{
  border-color:rgba(35,224,192,.30);
  transform:translateY(-2px);
}
.step-num{
  font-family:var(--font-num);font-size:34px;line-height:1;font-weight:600;
  color:rgba(35,224,192,.42);letter-spacing:-.02em;flex-shrink:0;padding-top:4px;
}
.step-body h3{font-size:19px;font-weight:600;margin-bottom:8px;letter-spacing:-.01em;}
.step-body p{color:var(--text-2);font-size:15px;line-height:1.85;}

/* ============ 入口形态卡 ============ */
.entry-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  height:100%;
  box-shadow:var(--shadow);
  transition:border-color .18s ease-out, transform .18s ease-out;
  display:flex;flex-direction:column;
}
.entry-card:hover{border-color:rgba(35,224,192,.30);transform:translateY(-2px);}
.entry-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--panel-2);}
.entry-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:filter .25s ease;}
.entry-card:hover .entry-thumb img{filter:brightness(1.06);}
.entry-thumb .badge{position:absolute;top:12px;right:12px;background:rgba(7,11,20,.72);}
.entry-body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.entry-body h3{font-size:17px;font-weight:600;letter-spacing:-.01em;}
.entry-body p{color:var(--text-2);font-size:14.5px;line-height:1.8;}
.entry-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);font-family:var(--font-num);letter-spacing:.04em;
}
.entry-foot a{color:var(--primary);display:inline-flex;align-items:center;gap:6px;font-family:var(--font-sans);font-size:13px;}
.entry-foot a i{font-size:11px;transition:transform .18s ease;}
.entry-foot a:hover i{transform:translateX(3px);}

/* ============ 异常对照行式卡片 ============ */
.status-list{display:flex;flex-direction:column;gap:12px;}
.status-row{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:18px 22px;
  background:var(--panel-2);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:border-color .18s ease-out, transform .18s ease-out, background .18s ease-out;
}
.status-row:hover{border-color:rgba(35,224,192,.28);background:rgba(17,26,43,.92);transform:translateY(-1px);}
.status-left{display:flex;flex-direction:column;gap:4px;min-width:0;}
.status-label{font-size:15.5px;font-weight:500;color:var(--text);}
.status-note{font-size:13.5px;color:var(--text-3);line-height:1.7;}
.status-state{
  flex-shrink:0;font-size:12px;letter-spacing:.04em;padding:5px 12px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);color:var(--primary);white-space:nowrap;
}
.status-state.warn{border-color:rgba(255,178,90,.42);color:var(--accent);}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  background:transparent;border:0;cursor:pointer;text-align:left;
  padding:22px 4px;color:var(--text);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--primary);}
.faq-idx{font-family:var(--font-num);font-size:13px;color:var(--text-3);letter-spacing:.06em;flex-shrink:0;}
.faq-text{flex:1;font-size:18px;font-weight:500;line-height:1.6;}
.faq-icon{
  position:relative;width:16px;height:16px;flex-shrink:0;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-3);
  transition:transform .24s ease, background .24s ease;
}
.faq-icon::before{width:16px;height:1.5px;transform:translate(-50%,-50%);}
.faq-icon::after{width:1.5px;height:16px;transform:translate(-50%,-50%);}
.faq-item.is-open .faq-icon::before{background:var(--primary);}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-item.is-open .faq-q{color:var(--primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 4px 24px 41px;color:var(--text-2);font-size:15px;line-height:1.85;}

/* ============ CTA 条 ============ */
.cta-band{
  margin:0 0 var(--section-y);
  border:1px solid var(--line-strong);
  border-radius:var(--r-lg);
  background:
    radial-gradient(circle at 88% 12%, rgba(35,224,192,.14), transparent 46%),
    linear-gradient(120deg, #0E1A24 0%, #0B1420 100%);
  padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:clamp(22px,2.2vw,28px);font-weight:600;line-height:1.3;letter-spacing:-.01em;}
.cta-band p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:520px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-2);
  padding:64px 0 28px;
  position:relative;z-index:1;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;
  padding-bottom:40px;
}
.f-brand .brand{margin-bottom:16px;}
.f-desc{color:var(--text-3);font-size:14px;line-height:1.85;max-width:300px;}
.f-title{
  font-size:13px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--text);font-weight:600;margin-bottom:16px;font-family:var(--font-num);
}
.f-list{display:flex;flex-direction:column;gap:10px;}
.f-list a{color:var(--text-2);font-size:14px;}
.f-list a:hover{color:var(--primary);}
.f-p{color:var(--text-3);font-size:14px;line-height:1.85;margin-bottom:10px;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding-top:24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.copy{font-size:13px;color:var(--text-3);}
.f-key{font-size:13px;color:var(--text-3);}
.f-key a{color:var(--text-2);}
.f-key a:hover{color:var(--primary);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .command-search{min-width:170px;}
  .main-nav{gap:20px;}
}
@media (max-width:1023px){
  :root{--section-y:64px;}
  .main-nav{display:none;}
  .command-search{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn-sm{display:none;}
  .brand-text{display:none;}
  .brand-text-short{display:inline;}
  .page-hero{min-height:auto;padding:36px 0 44px;}
  .hero-figure{margin-top:28px;}
  .toc{position:static;margin-bottom:20px;}
  .toc ul{flex-direction:row;flex-wrap:wrap;gap:6px;}
  .toc-link{padding:7px 10px;font-size:13px;}
  .toc-note{display:none;}
  .steps-layout{padding-top:44px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:32px 26px;}
}
@media (max-width:767px){
  :root{--section-y:44px;}
  .container{padding-left:20px;padding-right:20px;}
  .section-head{margin-bottom:28px;}
  .step-card{padding:20px 18px;gap:16px;}
  .step-num{font-size:26px;}
  .step-body h3{font-size:17px;}
  .hero-actions .btn{width:100%;}
  .hero-copy h1{font-size:29px;}
  .hero-figure img{height:190px;}
  .status-row{flex-direction:column;align-items:flex-start;gap:10px;}
  .status-state{align-self:flex-start;}
  .faq-text{font-size:16px;}
  .faq-a-inner{padding-left:0;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:480px){
  body::before{background-image:radial-gradient(circle at 20% 6%, rgba(35,224,192,.10), transparent 46%);background-size:auto;opacity:.6;}
  .page-hero::before{display:none;}
  .badge{font-size:11.5px;}
  .btn{height:44px;font-size:13.5px;}
}

/* roulang page: category2 */
:root{
  --bg:#070B14;
  --bg-2:#0C1220;
  --panel:#111A2B;
  --primary:#23E0C0;
  --primary-deep:#12A88F;
  --accent:#FFB25A;
  --text:#EAF0FA;
  --text-2:#9AA9C0;
  --text-3:#6B7C95;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(35,224,192,.35);
  --r-lg:16px;
  --r-md:12px;
  --r-pill:999px;
  --shadow:0 1px 0 rgba(255,255,255,.04) inset, 0 8px 24px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(35,224,192,.35), 0 10px 30px rgba(35,224,192,.16);
  --container:1200px;
  --ease:180ms ease-out;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  font-weight:400;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:radial-gradient(rgba(35,224,192,.5) 1px, transparent 1px);
  background-size:24px 24px;
  opacity:.04;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border-radius:var(--r-md);}
a{color:var(--primary);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--primary);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,p{margin:0;}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
  position:relative;
  z-index:1;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--r-pill);
  font-size:14px;
  font-weight:500;
  letter-spacing:.02em;
  border:1px solid transparent;
  transition:transform var(--ease), box-shadow var(--ease), background var(--ease), border-color var(--ease), color var(--ease), filter var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--primary);
  color:#04120F;
  box-shadow:0 0 0 1px rgba(35,224,192,.25), 0 8px 20px rgba(35,224,192,.18);
}
.btn-primary:hover{
  filter:brightness(1.06);
  transform:translateY(-1px);
  box-shadow:var(--shadow-glow);
  color:#04120F;
}
.btn-primary:active{
  transform:translateY(0);
  box-shadow:0 0 0 1px rgba(35,224,192,.25);
}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border:1px solid rgba(35,224,192,.45);
}
.btn-ghost:hover{
  background:rgba(35,224,192,.08);
  border-color:var(--primary);
  color:var(--text);
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(0);background:rgba(35,224,192,.06);}
.btn-sm{padding:9px 18px;font-size:13px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background var(--ease), border-color var(--ease), box-shadow var(--ease);
}
.site-header.scrolled{
  background:rgba(7,11,20,.9);
  border-bottom-color:var(--line);
  box-shadow:0 8px 24px rgba(0,0,0,.35);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  flex-shrink:0;
}
.brand:hover{color:var(--text);}
.brand-mark{
  width:12px;
  height:12px;
  border-radius:4px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(35,224,192,.6);
  flex-shrink:0;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:26px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--text-2);
  padding:6px 0;
  transition:color var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:var(--primary);
  border-radius:2px;
  transition:width var(--ease);
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--primary);}
.nav-link.is-active::after{width:100%;}

.header-right{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.command-search{
  display:flex;
  align-items:center;
  gap:8px;
  padding:0 14px;
  height:38px;
  width:236px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  transition:border-color var(--ease), box-shadow var(--ease), background var(--ease);
}
.command-search i{color:var(--text-3);font-size:13px;}
.command-search input{
  flex:1;
  min-width:0;
  background:transparent;
  border:0;
  outline:none;
  color:var(--text);
  font-size:13px;
  padding:0;
  height:100%;
}
.command-search input::placeholder{color:var(--text-3);}
.command-search:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(35,224,192,.12);
  background:rgba(255,255,255,.06);
}
.kbd{
  font-family:"Space Grotesk",monospace;
  font-size:11px;
  color:var(--text-3);
  border:1px solid var(--line);
  border-radius:6px;
  padding:1px 5px;
  line-height:1.4;
  flex-shrink:0;
}
.icon-btn{
  width:38px;
  height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:transparent;
  color:var(--text-2);
  transition:color var(--ease), border-color var(--ease), background var(--ease);
}
.icon-btn:hover{color:var(--primary);border-color:rgba(35,224,192,.45);background:rgba(35,224,192,.06);}
.nav-toggle{
  display:none;
  width:38px;
  height:38px;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:transparent;
  color:var(--text);
  font-size:15px;
}
.nav-toggle:hover{color:var(--primary);border-color:rgba(35,224,192,.45);}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(9,14,24,.98);
  padding:16px 24px 22px;
}
.mobile-drawer.open{display:block;}
.drawer-search{
  display:flex;
  align-items:center;
  gap:8px;
  height:42px;
  padding:0 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  margin-bottom:14px;
}
.drawer-search i{color:var(--text-3);font-size:13px;}
.drawer-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;color:var(--text);font-size:14px;
}
.drawer-search input::placeholder{color:var(--text-3);}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  padding:13px 2px;
  font-size:14px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer-nav a:last-child{border-bottom:0;}
.drawer-nav a.is-active{color:var(--primary);}
.drawer-cta{margin-top:16px;width:100%;}

/* ---------- 面包屑 ---------- */
.crumb-bar{
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(17,26,43,.55),rgba(7,11,20,0));
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:16px 0;
  font-size:13px;
  color:var(--text-3);
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:var(--text-3);opacity:.6;}
.crumb .cur{color:var(--primary);}

/* ---------- 居中 Hero ---------- */
.hero-center{
  position:relative;
  padding:78px 0 68px;
  text-align:center;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-center::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(7,11,20,.72),rgba(7,11,20,.86)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.9;
  z-index:0;
}
.hero-center::after{
  content:"";
  position:absolute;
  right:-120px;
  bottom:-160px;
  width:460px;
  height:460px;
  border-radius:50%;
  border:1px solid rgba(35,224,192,.12);
  box-shadow:0 0 0 60px rgba(35,224,192,.035), 0 0 0 130px rgba(35,224,192,.02);
  pointer-events:none;
  z-index:0;
}
.hero-center .container{max-width:900px;}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 16px;
  border-radius:var(--r-pill);
  border:1px solid rgba(35,224,192,.35);
  color:var(--primary);
  font-size:12px;
  letter-spacing:.12em;
  background:rgba(35,224,192,.06);
  margin-bottom:22px;
}
.hero-center h1{
  font-size:clamp(30px,4.2vw,50px);
  line-height:1.16;
  letter-spacing:-.01em;
  font-weight:600;
  margin-bottom:18px;
}
.hero-center h1 .hl{color:var(--primary);}
.hero-sub{
  font-size:16px;
  color:var(--text-2);
  line-height:1.8;
  max-width:660px;
  margin:0 auto 30px;
}
.hero-actions{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:30px;
}
.hero-badges{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:10px;
}
.pill-badge{
  font-size:12px;
  letter-spacing:.06em;
  color:var(--text-2);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:5px 14px;
  background:rgba(255,255,255,.02);
}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
.section-head{margin-bottom:42px;}
.section-head.center{text-align:center;max-width:720px;margin-left:auto;margin-right:auto;}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--primary);
  margin-bottom:12px;
  font-family:"Space Grotesk",monospace;
}
.section-head h2{
  font-size:clamp(24px,2.6vw,34px);
  font-weight:600;
  line-height:1.3;
  letter-spacing:-.01em;
  margin-bottom:12px;
}
.section-head p{color:var(--text-2);font-size:15px;line-height:1.85;}

/* ---------- 设备矩阵 ---------- */
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x > .cell{padding-left:12px;padding-right:12px;}
.device-cell{margin-bottom:24px;}
.device-card{
  height:100%;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px 24px;
  box-shadow:var(--shadow);
  transition:transform var(--ease), border-color var(--ease), box-shadow var(--ease);
  display:flex;
  flex-direction:column;
  gap:12px;
}
.device-card:hover{
  transform:translateY(-2px);
  border-color:rgba(35,224,192,.30);
  box-shadow:var(--shadow-glow);
}
.device-top{display:flex;align-items:center;gap:12px;}
.device-icon{
  width:42px;height:42px;
  border-radius:var(--r-md);
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(35,224,192,.08);
  border:1px solid rgba(35,224,192,.22);
  color:var(--primary);
  font-size:16px;
  flex-shrink:0;
}
.device-card h3{
  font-size:17px;
  font-weight:600;
  letter-spacing:.01em;
}
.device-card p{
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.8;
}
.device-meta{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-family:"Space Grotesk",monospace;
  font-size:12px;
  letter-spacing:.05em;
  color:var(--text-3);
}
.device-meta span{color:var(--primary);}

/* ---------- 兼容对照 ---------- */
.compat-list{display:flex;flex-direction:column;gap:12px;}
.compat-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:16px 20px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:border-color var(--ease), transform var(--ease), background var(--ease);
}
.compat-row:hover{
  border-color:rgba(35,224,192,.30);
  transform:translateY(-2px);
}
.compat-label{display:flex;flex-direction:column;gap:2px;min-width:0;}
.compat-label .name{font-size:15px;font-weight:500;color:var(--text);}
.compat-label .note{font-size:13px;color:var(--text-3);line-height:1.6;}
.status{
  flex-shrink:0;
  font-size:12px;
  letter-spacing:.05em;
  padding:5px 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  white-space:nowrap;
}
.status.ok{color:var(--primary);border-color:rgba(35,224,192,.4);background:rgba(35,224,192,.07);}
.status.warn{color:var(--accent);border-color:rgba(255,178,90,.4);background:rgba(255,178,90,.07);}
.status.idle{color:var(--text-2);border-color:var(--line);background:rgba(255,255,255,.02);}

/* ---------- 图文板块 ---------- */
.split-visual{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:48px;
  align-items:center;
}
.visual-frame{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  background:var(--bg-2);
}
.visual-frame img{width:100%;height:100%;object-fit:cover;border-radius:0;aspect-ratio:16/10;}
.visual-frame::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.05),rgba(7,11,20,.45));
  pointer-events:none;
}
.visual-tag{
  position:absolute;
  left:16px;bottom:16px;
  z-index:2;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--primary);
  border:1px solid rgba(35,224,192,.4);
  background:rgba(7,11,20,.7);
  border-radius:var(--r-pill);
  padding:5px 13px;
}
.split-copy h2{
  font-size:clamp(23px,2.4vw,31px);
  font-weight:600;
  line-height:1.32;
  margin-bottom:14px;
}
.split-copy > p{color:var(--text-2);font-size:15px;line-height:1.85;margin-bottom:22px;}
.check-list{display:flex;flex-direction:column;gap:14px;}
.check-list li{
  display:flex;
  gap:12px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.75;
}
.check-list li i{
  color:var(--primary);
  font-size:13px;
  margin-top:6px;
  flex-shrink:0;
}
.check-list li strong{color:var(--text);font-weight:500;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;margin:0 auto;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
  padding:22px 0;
  background:transparent;
  border:0;
  text-align:left;
  color:var(--text);
  font-size:18px;
  font-weight:500;
  line-height:1.5;
  transition:color var(--ease);
}
.faq-q:hover{color:var(--primary);}
.faq-q .idx{
  font-family:"Space Grotesk",monospace;
  font-size:13px;
  color:var(--text-3);
  min-width:26px;
}
.faq-q .q-text{flex:1;}
.faq-plus{
  position:relative;
  width:18px;height:18px;
  flex-shrink:0;
  transition:transform 220ms ease-out;
}
.faq-plus::before,.faq-plus::after{
  content:"";
  position:absolute;
  background:var(--primary);
  border-radius:2px;
}
.faq-plus::before{top:8px;left:0;width:18px;height:2px;}
.faq-plus::after{left:8px;top:0;width:2px;height:18px;transition:opacity 220ms ease-out;}
.faq-item.open .faq-plus{transform:rotate(135deg);}
.faq-item.open .faq-q{color:var(--primary);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 260ms ease-out;
}
.faq-a p{
  padding:0 0 22px 42px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}

/* ---------- CTA 条 ---------- */
.cta-band{
  margin:0 0 0;
  border:1px solid rgba(35,224,192,.28);
  border-radius:var(--r-lg);
  background:linear-gradient(135deg,rgba(35,224,192,.09),rgba(17,26,43,.9) 55%);
  padding:42px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  box-shadow:var(--shadow);
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-80px;top:-90px;
  width:280px;height:280px;
  border-radius:50%;
  border:1px solid rgba(35,224,192,.15);
  pointer-events:none;
}
.cta-band h2{
  font-size:clamp(21px,2.2vw,27px);
  font-weight:600;
  line-height:1.35;
  margin-bottom:8px;
}
.cta-band p{font-size:14.5px;color:var(--text-2);line-height:1.8;max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,18,32,.6),rgba(7,11,20,1));
  padding:64px 0 28px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.f-brand .brand{margin-bottom:16px;}
.f-desc{font-size:14px;color:var(--text-2);line-height:1.85;}
.f-title{
  font-size:13px;
  letter-spacing:.12em;
  color:var(--text);
  font-weight:500;
  margin-bottom:16px;
}
.f-list{display:flex;flex-direction:column;gap:10px;}
.f-list a{font-size:14px;color:var(--text-2);}
.f-list a:hover{color:var(--primary);}
.f-p{font-size:14px;color:var(--text-2);line-height:1.85;margin-bottom:10px;}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.copy{font-size:13px;color:var(--text-3);}
.f-key{font-size:13px;color:var(--text-3);}
.f-key a{color:var(--text-2);}
.f-key a:hover{color:var(--primary);}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .main-nav{display:none;}
  .command-search{width:180px;}
  .nav-toggle{display:inline-flex;}
  .section{padding:64px 0;}
  .split-visual{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 28px;}
}
@media (max-width:767px){
  .container{padding-left:20px;padding-right:20px;}
  .header-inner{height:62px;gap:14px;}
  .command-search,.header-right .icon-btn,.header-right .btn-sm{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-center{padding:54px 0 48px;}
  .hero-center h1{font-size:clamp(26px,7vw,32px);}
  .hero-sub{font-size:15px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .section,.section-sm{padding:44px 0;}
  .section-head{margin-bottom:28px;}
  .device-cell{margin-bottom:16px;}
  .compat-row{flex-direction:column;align-items:flex-start;gap:10px;}
  .status{align-self:flex-start;}
  .faq-q{font-size:16px;padding:18px 0;gap:12px;}
  .faq-a p{padding-left:0;font-size:14.5px;}
  .cta-band{padding:28px 22px;border-radius:var(--r-lg);}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{margin-top:56px;padding:44px 0 24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:480px){
  body::before{display:none;}
  .hero-center::after{display:none;}
  .hero-badges{gap:8px;}
  .pill-badge{font-size:11px;}
  .btn{padding:12px 20px;}
  .device-card{padding:22px 18px;}
}

/* roulang page: category3 */
:root{
  --bg-1:#070B14;
  --bg-2:#0C1220;
  --panel:#111A2B;
  --brand:#23E0C0;
  --brand-deep:#12A88F;
  --accent:#FFB25A;
  --text:#EAF0FA;
  --text-2:#9AA9C0;
  --text-3:#6B7C95;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(35,224,192,.35);
  --r-lg:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh:0 1px 0 rgba(255,255,255,.04) inset, 0 8px 24px rgba(0,0,0,.35);
  --sh-glow:0 0 0 1px rgba(35,224,192,.35), 0 10px 30px rgba(35,224,192,.16);
  --mono:'Space Grotesk',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sec-y:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  color:var(--text);
  background:var(--bg-1);
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:24px 24px;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.25;letter-spacing:-.01em}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.site-header,.crumb-bar,.page-main,.site-footer,.notice-wrap{position:relative;z-index:1}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,20,.72);
  border-bottom:1px solid var(--line);
  transition:background .24s ease,box-shadow .24s ease,backdrop-filter .24s ease;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.78);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
}
.nav-inner{display:flex;align-items:center;gap:22px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:22px;height:22px;border-radius:7px;
  background:radial-gradient(circle at 30% 30%,var(--brand),var(--brand-deep));
  box-shadow:0 0 0 1px rgba(35,224,192,.4),0 0 16px rgba(35,224,192,.35);
}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.02em;color:var(--text);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:6px}
.nav-link{
  position:relative;font-size:13px;letter-spacing:.04em;color:var(--text-2);
  padding:8px 0;transition:color .18s ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand)}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.command-search{
  display:flex;align-items:center;gap:8px;
  min-width:196px;padding:8px 14px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.command-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(35,224,192,.14)}
.command-search svg{flex:0 0 auto;color:var(--text-3)}
.command-search input{
  width:100%;border:0;background:transparent;outline:none;
  color:var(--text);font-size:13px;line-height:1.4;
}
.command-search input::placeholder{color:var(--text-3)}
.kbd-hint{
  font-family:var(--mono);font-size:11px;color:var(--text-3);
  border:1px solid var(--line);border-radius:6px;padding:1px 6px;flex:0 0 auto;
}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:var(--r-pill);
  background:transparent;border:1px solid var(--line);color:var(--text-2);
  cursor:pointer;transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.icon-btn:hover{color:var(--brand);border-color:var(--line-strong);background:rgba(35,224,192,.08)}
.search-toggle,.menu-btn{display:none}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-pill);
  font-size:14px;font-weight:500;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,border-color .18s ease-out,filter .18s ease-out;
}
.btn-primary{background:var(--brand);color:#04211C;box-shadow:0 6px 18px rgba(35,224,192,.18)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 10px 28px rgba(35,224,192,.3)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);background:rgba(35,224,192,.08);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:9px 18px;font-size:13px}

/* ---------- mobile nav ---------- */
.nav-mask{
  position:fixed;inset:0;background:rgba(4,7,13,.62);
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:80;
}
.nav-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);
  background:var(--bg-2);border-left:1px solid var(--line);
  padding:24px 22px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(102%);transition:transform .26s ease-out;z-index:90;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-title{font-size:13px;letter-spacing:.12em;color:var(--text-3)}
.drawer-link{
  display:block;padding:13px 4px;font-size:15px;color:var(--text-2);
  border-bottom:1px solid var(--line);transition:color .18s ease;
}
.drawer-link:hover,.drawer-link.is-active{color:var(--brand)}
.mobile-search{
  display:none;padding:0 0 14px;
}
.mobile-search.is-open{display:block}
.mobile-search .command-search{min-width:0;width:100%}

/* ---------- breadcrumb & notice ---------- */
.crumb-bar{padding:20px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb a{color:var(--text-2);transition:color .18s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--text-3)}
.breadcrumb .current{color:var(--text-2)}

.notice-wrap{padding-top:20px}
.notice-bar{
  display:flex;align-items:flex-start;gap:12px;
  padding:14px 18px;border-radius:var(--r-sm);
  border:1px solid rgba(255,178,90,.42);
  background:rgba(255,178,90,.07);
}
.notice-ico{flex:0 0 auto;color:var(--accent);margin-top:3px}
.notice-bar p{font-size:14px;line-height:1.75;color:#F0D6B4}

/* ---------- hero ---------- */
.cat-hero{
  margin-top:24px;
  padding:64px 0 72px;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(90deg,rgba(7,11,20,.94) 0%,rgba(7,11,20,.78) 55%,rgba(7,11,20,.6) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  position:relative;
  overflow:hidden;
}
.cat-hero::after{
  content:"";position:absolute;right:-90px;bottom:-110px;width:420px;height:420px;
  border-radius:50%;border:1px solid rgba(35,224,192,.16);
  box-shadow:0 0 0 60px rgba(35,224,192,.05),0 0 0 120px rgba(35,224,192,.035);
  pointer-events:none;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.1em;color:var(--brand);
  border:1px solid var(--line-strong);border-radius:var(--r-pill);
  padding:5px 14px;background:rgba(35,224,192,.07);
}
.cat-hero h1{
  margin:18px 0 16px;
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.2;
  font-weight:600;
  letter-spacing:-.01em;
}
.hero-sub{font-size:16px;color:var(--text-2);max-width:44ch;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-figure{
  border-radius:var(--r-sm);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh);
  aspect-ratio:16/10;
  background:var(--panel);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}

/* ---------- sections ---------- */
.section{padding:var(--sec-y) 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-tag{font-size:12px;letter-spacing:.14em;color:var(--brand);text-transform:uppercase}
.section-head h2{margin:12px 0 14px;font-size:clamp(24px,2.6vw,34px);font-weight:600}
.section-head p{font-size:15px;color:var(--text-2);line-height:1.8}

/* zigzag */
.zigzag{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:44px 0;border-bottom:1px solid var(--line);
}
.zigzag:first-of-type{padding-top:0}
.zigzag:last-of-type{border-bottom:0;padding-bottom:0}
.zigzag.is-reverse .zz-media{order:2}
.zz-media .img-frame{
  aspect-ratio:16/10;border-radius:var(--r-sm);overflow:hidden;
  border:1px solid var(--line);background:var(--panel);box-shadow:var(--sh);
  transition:border-color .18s ease-out,transform .18s ease-out;
}
.zz-media .img-frame:hover{border-color:rgba(35,224,192,.3);transform:translateY(-2px)}
.zz-media img{width:100%;height:100%;object-fit:cover}
.zz-body .step-no{
  font-family:var(--mono);font-size:13px;letter-spacing:.12em;color:var(--brand-deep);
}
.zz-body h3{margin:10px 0 14px;font-size:22px;font-weight:600}
.zz-body p{font-size:15px;color:var(--text-2);line-height:1.85;margin-bottom:12px}
.zz-list li{
  position:relative;padding-left:20px;font-size:14px;color:var(--text-2);
  line-height:1.85;margin-bottom:6px;
}
.zz-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;
  border-radius:50%;background:var(--brand);opacity:.7;
}

/* timeline */
.timeline{max-width:860px;margin:0 auto}
.tl-item{
  position:relative;display:grid;grid-template-columns:72px 1fr;gap:24px;
  padding-bottom:38px;
}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:35px;top:58px;bottom:0;width:1px;
  background:var(--line);
}
.tl-item:last-child::before{display:none}
.tl-num{
  width:48px;height:48px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:15px;color:var(--brand);
  border:1px solid var(--line-strong);background:rgba(35,224,192,.07);
}
.tl-content h3{font-size:19px;font-weight:600;margin-bottom:8px}
.tl-content p{font-size:15px;color:var(--text-2);line-height:1.85}
.tl-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.chip{
  font-size:12px;letter-spacing:.06em;color:var(--text-2);
  border:1px solid var(--line);border-radius:var(--r-pill);padding:3px 12px;
}
.chip-accent{color:var(--accent);border-color:rgba(255,178,90,.42);background:rgba(255,178,90,.06)}

/* mini cards */
.mini-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mini-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-sm);
  padding:24px 22px;box-shadow:var(--sh);
  transition:border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.mini-card:hover{border-color:rgba(35,224,192,.3);transform:translateY(-2px);box-shadow:var(--sh-glow)}
.mini-ico{
  width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(35,224,192,.08);border:1px solid var(--line-strong);color:var(--brand);margin-bottom:16px;
}
.mini-card h3{font-size:18px;font-weight:600;margin-bottom:10px}
.mini-card p{font-size:14px;color:var(--text-2);line-height:1.8}

/* faq */
.faq-wrap{max-width:940px;margin:0 auto}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  min-height:64px;padding:20px 0;
  background:none;border:0;color:var(--text);text-align:left;
  font-size:18px;font-weight:500;cursor:pointer;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-idx{font-family:var(--mono);font-size:13px;color:var(--text-3);flex:0 0 auto}
.faq-plus{
  margin-left:auto;flex:0 0 auto;width:22px;height:22px;position:relative;
  transition:transform .24s ease;
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-plus::before{width:14px;height:2px}
.faq-plus::after{width:2px;height:14px;transition:opacity .24s ease}
.faq-item.is-open .faq-plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.is-open .faq-a{max-height:360px}
.faq-a p{padding:0 0 22px 44px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* cta band */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:40px;border-radius:var(--r-lg);
  border:1px solid var(--line-strong);
  background:
    linear-gradient(120deg,rgba(35,224,192,.12),rgba(17,26,43,.92) 62%),
    var(--panel);
  box-shadow:var(--sh);
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:600;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--text-2);max-width:52ch}

/* ---------- footer ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-2);
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
.f-title{font-size:13px;letter-spacing:.12em;color:var(--text-2);font-weight:500;margin-bottom:16px}
.f-list li{margin-bottom:10px}
.f-list a{font-size:14px;color:var(--text-2);transition:color .18s ease}
.f-list a:hover{color:var(--brand)}
.f-desc,.f-p{font-size:14px;color:var(--text-3);line-height:1.78}
.f-desc{margin-top:14px;max-width:34ch}
.f-p{margin-bottom:10px}
.footer-bottom{
  border-top:1px solid var(--line);
  margin-top:48px;padding-top:20px;
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
}
.copy,.f-key{font-size:13px;color:var(--text-3)}
.f-key a{color:var(--text-2);transition:color .18s ease}
.f-key a:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  :root{--sec-y:64px}
  .main-nav{display:none}
  .command-search{display:none}
  .search-toggle,.menu-btn{display:inline-flex}
  .zigzag{grid-template-columns:1fr;gap:28px;padding:36px 0}
  .zigzag.is-reverse .zz-media{order:0}
  .mini-cards{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cat-hero{padding:52px 0 56px}
  .cta-band{padding:32px}
}
@media (max-width:767px){
  :root{--sec-y:44px}
  .container{padding:0 20px}
  .nav-inner{height:64px;gap:12px}
  .brand-text{font-size:15px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .mini-cards{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .faq-q{font-size:16px;min-height:58px;padding:16px 0;gap:12px}
  .faq-a p{padding-left:34px;font-size:14px}
  .tl-item{grid-template-columns:56px 1fr;gap:16px;padding-bottom:30px}
  .tl-num{width:40px;height:40px;font-size:14px}
  .tl-item::before{left:27px;top:50px}
  .cta-band{padding:26px 22px;flex-direction:column;align-items:flex-start}
  .cat-hero::after{display:none}
  .section-head{margin-bottom:30px}
  .zz-body h3{font-size:20px}
}
@media (max-width:480px){
  body::before{display:none}
  .brand-text{font-size:14px}
  .badge{font-size:11px;padding:4px 12px}
  .cta-band h2{font-size:21px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}