/* roulang page: index */
:root{
  --bg:#070D18;
  --bg-2:#0B1526;
  --bg-3:#101C33;
  --teal:#2BD9C4;
  --teal-dim:rgba(43,217,196,.55);
  --ember:#FF8A4C;
  --text:#E8F0FA;
  --muted:#9FB2C8;
  --dim:#6B7F99;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:rgba(255,255,255,.05);
  --glass-2:rgba(255,255,255,.04);
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --shadow:0 8px 32px -16px rgba(0,0,0,.6);
  --shadow-hover:0 16px 48px -18px rgba(0,0,0,.75);
  --container:1200px;
}

*,*::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:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:14px;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.3;}
h1{font-size:clamp(2rem,4.6vw,3.4rem);line-height:1.15;font-weight:800;}
h2{font-size:clamp(1.5rem,2.6vw,2.25rem);font-weight:700;}
h3{font-size:1.25rem;font-weight:700;}
h4{font-size:1.0625rem;font-weight:600;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(43,217,196,.3);color:#fff;}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:8px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
.section{padding:96px 0;position:relative;}
.section-alt{background:linear-gradient(180deg,rgba(11,21,38,.65),rgba(7,13,24,0));}
.divider-grad{height:1px;background:linear-gradient(90deg,var(--teal),rgba(43,217,196,0));border:0;margin:0;}

/* ---------- 九宫格点阵母题 ---------- */
.grid9{
  display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);
  gap:2px;width:22px;height:22px;flex:none;
}
.grid9 i{display:block;background:var(--teal);border-radius:1.5px;opacity:.85;}
.grid9 i:nth-child(5){background:var(--ember);}
.grid9.sm{width:16px;height:16px;gap:1.5px;}

.dotgrid{
  background-image:radial-gradient(rgba(43,217,196,.5) 1.3px,transparent 1.3px);
  background-size:18px 18px;
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(7,13,24,.7);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{
  background:rgba(7,13,24,.92);
  box-shadow:0 12px 34px -20px rgba(0,0,0,.95);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-text{font-size:17px;font-weight:700;color:var(--text);letter-spacing:-.01em;white-space:nowrap;}
.brand-text em{font-style:normal;color:var(--teal);}

.nav-main{display:flex;align-items:center;gap:28px;}
.nav-main > li{position:relative;}
.nav-link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--muted);
  transition:color .2s ease-out,text-shadow .2s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:linear-gradient(90deg,var(--teal),var(--ember));
  transition:width .22s ease-out;
}
.nav-link:hover,.nav-link.active{color:var(--text);text-shadow:0 0 14px rgba(43,217,196,.45);}
.nav-link:hover::after,.nav-link.active::after{width:100%;}

.nav-right{display:flex;align-items:center;gap:14px;flex:none;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line-strong);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
  transition:transform .2s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- Mega panel ---------- */
.mega{
  position:absolute;top:calc(100% + 16px);left:50%;
  width:860px;max-width:calc(100vw - 40px);
  transform:translateX(-50%) translateY(-6px);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s;
}
.has-mega:hover .mega,.has-mega:focus-within .mega{
  opacity:1;visibility:visible;pointer-events:auto;
  transform:translateX(-50%) translateY(0);
}
.mega-inner{
  display:grid;grid-template-columns:1.05fr 1fr 1fr;gap:22px;
  padding:22px;border-radius:var(--r-panel);
  background:rgba(11,21,38,.94);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-hover);
  backdrop-filter:blur(22px);
  -webkit-backdrop-filter:blur(22px);
}
.mega-title{font-size:13px;color:var(--dim);letter-spacing:.08em;margin-bottom:12px;}
.mega-list li + li{margin-top:10px;}
.mega-list a{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted);transition:color .2s ease;}
.mega-list a:hover{color:var(--teal);}
.mega-index{font-size:12px;color:var(--ember);font-weight:700;min-width:18px;}
.mega-news li + li{margin-top:12px;}
.mega-news a{display:block;font-size:14px;color:var(--muted);line-height:1.6;transition:color .2s ease;}
.mega-news a:hover{color:var(--text);}
.mega-news .mega-date{display:block;font-size:12px;color:var(--dim);margin-top:3px;}
.mega-card{
  border-radius:14px;overflow:hidden;border:1px solid var(--line);
  background:var(--glass-2);display:block;transition:transform .2s ease,border-color .2s ease;
}
.mega-card:hover{transform:translateY(-3px);border-color:var(--teal-dim);}
.mega-card img{width:100%;height:104px;object-fit:cover;border-radius:0;}
.mega-card-body{padding:12px 14px;}
.mega-card-body strong{display:block;font-size:14px;font-weight:600;color:var(--text);}
.mega-card-body span{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--teal);margin-top:6px;}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  display:none;position:fixed;inset:68px 0 0;z-index:88;
  background:rgba(7,13,24,.98);
  padding:24px 20px 40px;
  overflow-y:auto;
}
.mobile-drawer.open{display:block;}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 4px;font-size:16px;color:var(--muted);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.active{color:var(--teal);}
.mobile-drawer .drawer-cta{margin-top:22px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,border-color .2s ease-out,color .2s ease-out,filter .2s ease-out;
}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}
.btn-primary{
  background:linear-gradient(135deg,#48F2DD,#2BD9C4 58%,#1FB39F);
  color:#04231F;
  box-shadow:0 0 24px -4px rgba(43,217,196,.55);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.07);box-shadow:0 0 34px -2px rgba(43,217,196,.75);}
.btn-ghost{
  background:transparent;border-color:var(--line-strong);color:var(--text);
}
.btn-ghost:hover{border-color:var(--teal);color:#fff;transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--teal);
}
.link-arrow svg{transition:transform .2s ease-out;}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(7,13,24,.98) 0%,rgba(7,13,24,.9) 40%,rgba(7,13,24,.5) 100%);
}
.hero-dots{position:absolute;inset:0;opacity:.06;pointer-events:none;}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center;
  padding:92px 20px 96px;min-height:620px;
}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;
  font-size:13px;color:var(--teal);
  background:rgba(43,217,196,.08);
  border:1px solid rgba(43,217,196,.28);
}
.hero-title{margin-top:22px;max-width:16em;}
.hero-title span{
  background:linear-gradient(100deg,#2BD9C4,#8FF0E4 45%,#FF8A4C);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:20px;font-size:17px;color:var(--muted);max-width:32em;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:30px;font-size:13.5px;color:var(--dim);}
.hero-meta li{display:flex;align-items:center;gap:8px;}
.hero-meta li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--teal);opacity:.8;}

.glass-card{
  background:var(--glass);
  border:1px solid var(--line-strong);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
}
.entry-card{padding:26px 24px;border-radius:var(--r-panel);}
.entry-head{
  display:flex;align-items:center;justify-content:space-between;
  font-size:14px;font-weight:600;color:var(--text);
  padding-bottom:16px;border-bottom:1px solid var(--line);
}
.entry-head small{font-size:12px;color:var(--dim);font-weight:400;}
.entry-item{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 0;border-bottom:1px dashed var(--line);
  transition:transform .2s ease-out;
}
.entry-item:last-child{border-bottom:0;padding-bottom:4px;}
.entry-item:hover{transform:translateX(4px);}
.entry-item strong{display:block;font-size:15px;font-weight:600;color:var(--text);}
.entry-item span{display:block;font-size:13px;color:var(--dim);margin-top:3px;}
.entry-item svg{flex:none;color:var(--teal);}

/* ---------- 区块标题 ---------- */
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:28px;
  margin-bottom:44px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--teal);letter-spacing:.06em;margin-bottom:12px;
}
.sec-title{position:relative;padding-left:16px;}
.sec-title::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;
  border-radius:3px;background:linear-gradient(180deg,var(--teal),var(--ember));
}
.section-desc{font-size:15px;color:var(--muted);max-width:46em;line-height:1.8;}

/* ---------- Bento ---------- */
.bento{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:minmax(158px,auto);gap:22px;}
.bento-card{
  position:relative;padding:26px 24px;border-radius:var(--r-card);
  background:var(--glass-2);border:1px solid var(--line);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
  overflow:hidden;
}
.bento-card:hover{transform:translateY(-4px);border-color:var(--teal-dim);box-shadow:var(--shadow-hover);}
.bento-lg{grid-column:span 2;grid-row:span 2;display:flex;flex-direction:column;justify-content:space-between;}
.bento-lg::after{
  content:"";position:absolute;right:-40px;bottom:-40px;width:180px;height:180px;
  background-image:radial-gradient(rgba(43,217,196,.5) 1.2px,transparent 1.2px);
  background-size:16px 16px;opacity:.16;pointer-events:none;
}
.bento-card h3{font-size:17px;margin-bottom:10px;}
.bento-card p{font-size:14.5px;color:var(--muted);line-height:1.8;}
.bento-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.tag{
  display:inline-flex;align-items:center;padding:5px 11px;border-radius:999px;
  font-size:12.5px;color:var(--muted);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
}
.tag-teal{color:var(--teal);border-color:rgba(43,217,196,.3);background:rgba(43,217,196,.07);}
.bento-num{
  font-size:13px;font-weight:700;color:var(--ember);letter-spacing:.1em;margin-bottom:12px;display:block;
}

/* ---------- 数据条 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-radius:var(--r-panel);border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(16,28,51,.75),rgba(11,21,38,.45));
  overflow:hidden;
}
.stat{padding:30px 26px;position:relative;}
.stat + .stat{border-left:1px solid var(--line);}
.stat b{
  display:block;font-size:clamp(2rem,3.2vw,2.75rem);font-weight:800;line-height:1.1;
  background:linear-gradient(100deg,#2BD9C4,#9BF3E6 40%,#FF8A4C);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  font-variant-numeric:tabular-nums;
}
.stat span{display:block;font-size:13px;color:var(--muted);margin-top:8px;}

/* ---------- 场景图文 ---------- */
.scene-row{
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;
  padding:34px 0;
}
.scene-row + .scene-row{border-top:1px solid var(--line);}
.scene-row:nth-child(even) .scene-media{order:2;}
.scene-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;}
.scene-media{overflow:hidden;border-radius:14px;border:1px solid var(--line);}
.scene-media:hover img{transform:scale(1.03);}
.scene-body h3{font-size:1.35rem;margin-bottom:14px;}
.scene-body p{font-size:15px;color:var(--muted);line-height:1.85;}
.scene-points{margin-top:18px;display:grid;gap:9px;}
.scene-points li{display:flex;gap:10px;font-size:14px;color:var(--muted);}
.scene-points li::before{
  content:"";width:6px;height:6px;border-radius:2px;background:var(--teal);
  margin-top:9px;flex:none;
}

/* ---------- 方案长卡 ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.plan-card{
  display:flex;flex-direction:column;
  padding:30px 26px;border-radius:var(--r-card);
  background:var(--glass-2);border:1px solid var(--line);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.plan-card:hover{transform:translateY(-4px);border-color:var(--teal-dim);box-shadow:var(--shadow-hover);}
.plan-num{
  font-size:14px;font-weight:800;letter-spacing:.12em;color:var(--ember);margin-bottom:16px;
}
.plan-card h3{font-size:1.2rem;margin-bottom:12px;}
.plan-card > p{font-size:14.5px;color:var(--muted);line-height:1.8;}
.plan-list{margin:20px 0 24px;display:grid;gap:10px;}
.plan-list li{display:flex;gap:10px;font-size:14px;color:var(--muted);}
.plan-list li::before{
  content:"";width:14px;height:2px;border-radius:2px;background:var(--teal);
  margin-top:12px;flex:none;
}
.plan-card .link-arrow{margin-top:auto;}

/* ---------- 最新动态 ---------- */
.news-grid{display:grid;grid-template-columns:8fr 4fr;gap:24px;align-items:start;}
.news-main{overflow:hidden;display:block;transition:transform .2s ease-out,border-color .2s ease-out;}
.news-main:hover{transform:translateY(-4px);border-color:var(--teal-dim);}
.news-main-media{position:relative;}
.news-main-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.badge{
  position:absolute;left:14px;top:14px;
  padding:5px 12px;border-radius:999px;font-size:12.5px;
  background:rgba(7,13,24,.82);color:var(--teal);
  border:1px solid rgba(43,217,196,.35);backdrop-filter:blur(8px);
}
.news-main-body{padding:24px;}
.news-main-title{font-size:1.2rem;line-height:1.5;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-main-desc{font-size:14.5px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-time{display:inline-block;margin-top:16px;font-size:13px;color:var(--dim);}
.news-list{
  padding:6px 22px;border-radius:var(--r-card);
  background:var(--glass-2);border:1px solid var(--line);
}
.news-item a{
  display:block;padding:18px 0 18px 16px;border-bottom:1px solid var(--line);
  position:relative;transition:transform .2s ease-out;
}
.news-list .news-item:last-child a{border-bottom:0;}
.news-item a::before{
  content:"";position:absolute;left:0;top:25px;bottom:25px;width:2px;
  background:linear-gradient(180deg,var(--teal),rgba(43,217,196,.1));border-radius:2px;
}
.news-item a::after{
  content:"";position:absolute;left:-3px;top:22px;width:8px;height:8px;border-radius:50%;
  background:var(--teal);box-shadow:0 0 10px rgba(43,217,196,.7);
}
.news-item a:hover{transform:translateX(4px);}
.news-item-title{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:14.5px;font-weight:600;color:var(--text);line-height:1.65;
}
.news-item-meta{display:flex;align-items:center;gap:12px;margin-top:8px;font-size:12.5px;color:var(--dim);}
.empty-card{
  padding:44px 28px;text-align:center;border-radius:var(--r-card);
}
.empty-card p{font-size:15px;color:var(--muted);margin-bottom:18px;}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:1fr 320px;gap:28px;align-items:start;}
.faq-list{display:grid;gap:14px;}
.faq-item{
  border-radius:var(--r-card);
  background:var(--glass-2);border:1px solid var(--line);
  transition:border-color .2s ease-out,background .2s ease-out;
}
.faq-item[open]{border-color:var(--teal-dim);background:rgba(43,217,196,.045);}
.faq-item summary{
  display:flex;align-items:center;gap:14px;
  padding:20px 22px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .plus{
  margin-left:auto;flex:none;position:relative;width:16px;height:16px;
}
.faq-item summary .plus::before,.faq-item summary .plus::after{
  content:"";position:absolute;background:var(--teal);border-radius:2px;
  transition:transform .2s ease-out;
}
.faq-item summary .plus::before{left:0;top:7px;width:16px;height:2px;}
.faq-item summary .plus::after{left:7px;top:0;width:2px;height:16px;}
.faq-item[open] summary .plus::after{transform:rotate(90deg);opacity:0;}
.faq-body{padding:0 22px 22px 58px;font-size:15px;color:var(--muted);line-height:1.85;}
.side-card{padding:26px 24px;border-radius:var(--r-panel);}
.side-card h3{font-size:17px;margin-bottom:12px;}
.side-card p{font-size:14.5px;color:var(--muted);line-height:1.8;margin-bottom:18px;}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:40px;align-items:start;}
.contact-item{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);}
.contact-item:last-child{border-bottom:0;}
.contact-icon{
  width:40px;height:40px;flex:none;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(43,217,196,.09);border:1px solid rgba(43,217,196,.25);color:var(--teal);
}
.contact-item strong{display:block;font-size:15px;font-weight:600;}
.contact-item span{display:block;font-size:13.5px;color:var(--dim);margin-top:4px;}
.form-card{padding:30px 28px;border-radius:var(--r-panel);}
.form-row{display:grid;gap:16px;}
.form-row.two{grid-template-columns:1fr 1fr;}
.field label{display:block;font-size:13.5px;color:var(--muted);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;height:48px;padding:0 16px;border-radius:12px;
  background:rgba(255,255,255,.03);border:1px solid var(--line-strong);
  color:var(--text);font-size:15px;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.field textarea{height:130px;padding:14px 16px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--dim);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--teal);
  box-shadow:0 0 0 3px rgba(43,217,196,.18);
}
.form-note{margin-top:16px;font-size:13px;color:var(--dim);}
.form-note.ok{color:var(--teal);}

/* ---------- Footer ---------- */
.site-footer{
  background:#050A12;border-top:1px solid var(--line);
  position:relative;padding:64px 0 28px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,var(--teal),rgba(43,217,196,0));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand span{font-size:16px;font-weight:700;color:var(--text);}
.footer-desc{font-size:14px;color:var(--dim);line-height:1.85;max-width:30em;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:18px;font-weight:600;}
.footer-col li + li{margin-top:11px;}
.footer-col a,.footer-col p{font-size:13.5px;color:var(--dim);line-height:1.7;transition:color .2s ease;}
.footer-col a:hover{color:var(--teal);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;
  font-size:13px;color:var(--dim);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-main{display:none;}
  .nav-toggle{display:flex;}
  .nav-right .btn-primary{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:36px;padding:72px 20px 80px;min-height:auto;}
  .entry-card{order:2;}
  .bento{grid-template-columns:repeat(2,1fr);}
  .bento-lg{grid-column:span 2;grid-row:span 1;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(3){border-left:0;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line);}
  .scene-row{grid-template-columns:1fr;gap:24px;}
  .scene-row:nth-child(even) .scene-media{order:0;}
  .plan-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .faq-layout{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .section{padding:64px 0;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:30px;}
  .bento{grid-template-columns:1fr;}
  .bento-lg{grid-column:span 1;}
  .bento-card{padding:22px 20px;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat{padding:22px 18px;}
  .footer-grid{grid-template-columns:1fr;}
  .form-row.two{grid-template-columns:1fr;}
  .hero-cta .btn{width:100%;}
  .faq-body{padding:0 20px 20px 20px;}
  .news-list{padding:4px 16px;}
  .scene-row{padding:26px 0;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .bento-card:hover,.plan-card:hover,.news-main:hover,.btn:hover{transform:none !important;}
  .scene-media:hover img{transform:none;}
}

/* roulang page: article */
:root{
  --bg:#070D18;
  --panel:#0B1526;
  --panel-2:#101C33;
  --accent:#2BD9C4;
  --accent-soft:rgba(43,217,196,.14);
  --accent-line:rgba(43,217,196,.42);
  --warm:#FF8A4C;
  --text:#E8F0FA;
  --text-2:#9FB2C8;
  --text-3:#6B7F99;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:rgba(255,255,255,.05);
  --glass-2:rgba(255,255,255,.035);
  --radius-card:16px;
  --radius-panel:20px;
  --radius-btn:12px;
  --shadow:0 8px 32px -16px rgba(0,0,0,.6);
  --shadow-hover:0 16px 48px -18px rgba(0,0,0,.75);
  --glow:0 0 24px -4px rgba(43,217,196,.55);
  --container:1240px;
  --font:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::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:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(900px 460px at 12% -6%, rgba(43,217,196,.10), transparent 62%),
    radial-gradient(760px 420px at 92% 4%, rgba(255,138,76,.07), transparent 60%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border-radius:14px;object-fit:cover;}
a{color:inherit;text-decoration:none;transition:color .2s ease-out,border-color .2s ease-out,background-color .2s ease-out;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;font-weight:700;}
p{margin:0;}
button,input,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:8px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
  position:relative;
  z-index:1;
}
.grid9{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:2px;
  width:18px;
  height:18px;
  flex:0 0 18px;
}
.grid9 i{
  display:block;
  border-radius:1.5px;
  background:linear-gradient(135deg,var(--accent),rgba(43,217,196,.32));
}
.grid9 i:nth-child(2),
.grid9 i:nth-child(4),
.grid9 i:nth-child(6),
.grid9 i:nth-child(8){background:rgba(255,255,255,.22);}
.grid9 i:nth-child(5){background:var(--warm);}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  height:68px;
  display:flex;
  align-items:center;
  background:rgba(7,13,24,.72);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease-out,box-shadow .25s ease-out,border-color .25s ease-out;
}
.site-header.is-stuck{
  background:rgba(7,13,24,.86);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-bottom-color:var(--line);
  box-shadow:0 14px 40px -26px rgba(0,0,0,.9);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:26px;
  height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-text{
  font-size:17px;
  font-weight:800;
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand-text em{
  font-style:normal;
  background:linear-gradient(90deg,var(--accent),var(--warm));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.nav-desktop{margin-left:auto;}
.nav-main{
  display:flex;
  align-items:center;
  gap:28px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:68px;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:20px;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--accent);
  box-shadow:0 0 12px rgba(43,217,196,.7);
  transition:width .22s ease-out;
}
.nav-link:hover,.nav-link.active{color:var(--text);}
.nav-link:hover::after,.nav-link.active::after{width:100%;}
.has-mega{position:relative;}
.mega{
  position:absolute;
  top:64px;
  left:-24px;
  width:760px;
  opacity:0;
  visibility:hidden;
  transform:translateY(-6px);
  transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s;
  z-index:90;
}
.has-mega:hover .mega,
.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0);}
.mega-inner{
  display:grid;
  grid-template-columns:1.1fr 1fr .9fr;
  gap:22px;
  padding:22px;
  border-radius:var(--radius-panel);
  background:rgba(11,21,38,.94);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(24px);
  -webkit-backdrop-filter:blur(24px);
  box-shadow:var(--shadow-hover);
}
.mega-title{
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--text-3);
  margin-bottom:12px;
}
.mega-list li + li{margin-top:8px;}
.mega-list a,.mega-news a{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-2);
  padding:6px 8px;
  border-radius:10px;
}
.mega-list a:hover,.mega-news a:hover{color:var(--text);background:var(--accent-soft);}
.mega-index{
  font-family:"Inter",monospace;
  font-variant-numeric:tabular-nums;
  font-size:12px;
  color:var(--warm);
}
.mega-news li + li{margin-top:10px;}
.mega-news a{display:block;line-height:1.5;}
.mega-date{
  display:block;
  font-size:12px;
  color:var(--text-3);
  margin-top:2px;
}
.mega-card{
  display:block;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--glass-2);
}
.mega-card img{width:100%;aspect-ratio:16/9;border-radius:0;transition:transform .4s ease-out;}
.mega-card:hover img{transform:scale(1.03);}
.mega-card-body{padding:12px 14px 14px;}
.mega-card-body strong{display:block;font-size:15px;margin-bottom:4px;}
.mega-card-body span{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:var(--accent);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:8px;
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  background:var(--glass);
  color:var(--text);
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:currentColor;
  border-radius:2px;
  position:relative;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:currentColor;
  border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-drawer{display:none;}
.mobile-drawer ul li a{
  display:block;
  padding:14px 4px;
  font-size:16px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.mobile-drawer ul li a:hover,.mobile-drawer ul li a.active{color:var(--accent);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,color .2s ease-out;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#3FEBD5,#20C3AF);
  color:#04241F;
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 30px -2px rgba(43,217,196,.7);}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}
.arrow-link{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:14px;
  color:var(--accent);
}
.arrow-link svg{transition:transform .2s ease-out;}
.arrow-link:hover svg{transform:translateX(4px);}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;
  padding:40px 0 44px;
  border-bottom:1px solid var(--line);
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.article-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg,rgba(7,13,24,.97) 0%,rgba(7,13,24,.86) 46%,rgba(7,13,24,.62) 100%),
    radial-gradient(circle at 1px 1px, rgba(255,255,255,.06) 1px, transparent 1.6px);
  background-size:auto, 22px 22px;
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:var(--text-3);opacity:.6;}
.breadcrumb .current{
  color:var(--text);
  max-width:340px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--accent);
  background:var(--accent-soft);
  border:1px solid var(--accent-line);
}
.badge-warm{
  color:var(--warm);
  background:rgba(255,138,76,.13);
  border-color:rgba(255,138,76,.4);
}
.article-title{
  font-size:clamp(1.7rem,3.6vw,2.6rem);
  line-height:1.24;
  font-weight:800;
  margin:16px 0 18px;
  max-width:900px;
}
.article-rule{
  height:1px;
  width:100%;
  max-width:280px;
  background:linear-gradient(90deg,var(--accent),rgba(255,138,76,.5),transparent);
  margin-bottom:18px;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  font-size:13px;
  color:var(--text-3);
}
.meta-row span{display:inline-flex;align-items:center;gap:7px;}
.meta-row .dot{
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--accent);
  opacity:.8;
}
.meta-num{font-variant-numeric:tabular-nums;color:var(--text-2);}

/* ---------- section ---------- */
.section{padding:56px 0 72px;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 340px;
  gap:28px;
  align-items:start;
}
.glass{
  background:var(--glass-2);
  border:1px solid var(--line);
  border-radius:var(--radius-panel);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow);
}
.article-main{padding:34px 38px 30px;}
.article-body{
  max-width:760px;
  font-size:16px;
  line-height:1.9;
  color:#C6D5E6;
}
.article-body p{margin:0 0 16px;}
.article-body h2{
  position:relative;
  font-size:1.375rem;
  line-height:1.4;
  color:var(--text);
  margin:38px 0 16px;
  padding-left:14px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.22em;
  bottom:.22em;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--accent),rgba(43,217,196,.28));
}
.article-body h3{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:1.25rem;
  color:var(--text);
  margin:28px 0 12px;
}
.article-body h3::before{
  content:"";
  width:16px;
  height:16px;
  flex:0 0 16px;
  background-image:radial-gradient(circle,var(--accent) 1.5px,transparent 1.7px);
  background-size:5.4px 5.4px;
  opacity:.9;
}
.article-body h4{font-size:1.0625rem;font-weight:600;color:var(--text);margin:22px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:4px;}
.article-body li{position:relative;padding-left:20px;margin-bottom:9px;}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.72em;
  width:6px;
  height:6px;
  border-radius:2px;
  background:var(--accent);
  opacity:.85;
}
.article-body ol{counter-reset:item;}
.article-body ol li{counter-increment:item;}
.article-body ol li::before{
  content:counter(item);
  position:absolute;
  left:0;
  top:.1em;
  font-family:"Inter",monospace;
  font-size:13px;
  font-variant-numeric:tabular-nums;
  color:var(--warm);
  font-weight:600;
}
.article-body blockquote{
  margin:22px 0;
  padding:16px 20px;
  border-left:3px solid var(--accent);
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  background:var(--glass);
  color:var(--text-2);
}
.article-body img{margin:20px 0 8px;width:100%;border-radius:14px;}
.article-body figure{margin:22px 0;}
.article-body figcaption,
.article-body .caption{
  font-size:13px;
  color:var(--text-3);
  text-align:center;
  margin-top:8px;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:22px 0;
  font-size:14.5px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
}
.article-body th,.article-body td{
  padding:11px 14px;
  text-align:left;
  border-bottom:1px solid var(--line);
}
.article-body th{background:rgba(255,255,255,.05);color:var(--text);font-weight:600;}
.article-body tr:last-child td{border-bottom:none;}
.article-body hr{
  border:none;
  height:1px;
  margin:32px 0;
  background:linear-gradient(90deg,var(--accent),rgba(255,255,255,.06));
}
.article-body code{
  padding:2px 6px;
  border-radius:6px;
  font-size:13.5px;
  background:rgba(43,217,196,.12);
  border:1px solid rgba(43,217,196,.22);
  color:#B7F3E9;
  font-family:"Inter",monospace;
}
.article-body a{color:var(--accent);border-bottom:1px solid rgba(43,217,196,.4);}
.article-body a:hover{border-bottom-color:var(--accent);}

/* ---------- article foot ---------- */
.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:34px 0 0;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:5px 13px;
  border-radius:999px;
  font-size:13px;
  color:var(--text-2);
  background:var(--glass);
  border:1px solid var(--line);
}
.tag:hover{color:var(--accent);border-color:var(--accent-line);}
.pager{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
  margin-top:26px;
}
.pager-card{
  display:block;
  padding:18px 20px;
  border-radius:var(--radius-card);
  background:var(--glass-2);
  border:1px solid var(--line);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.pager-card:hover{transform:translateY(-4px);border-color:var(--accent-line);box-shadow:var(--shadow-hover);}
.pager-card small{display:block;font-size:12.5px;color:var(--text-3);margin-bottom:6px;}
.pager-card strong{display:block;font-size:15.5px;color:var(--text);line-height:1.5;}
.pager-foot{display:flex;justify-content:center;margin-top:26px;}
.empty-state{
  max-width:760px;
  padding:40px 28px;
  text-align:center;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--line);
}
.empty-state p{color:var(--text-2);margin-bottom:18px;}

/* ---------- sidebar ---------- */
.article-side{
  position:sticky;
  top:92px;
  display:grid;
  gap:20px;
  max-height:80vh;
  overflow:auto;
  scrollbar-width:thin;
}
.article-side::-webkit-scrollbar{width:6px;}
.article-side::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:99px;}
.side-card{
  padding:22px;
  border-radius:var(--radius-panel);
  background:var(--glass-2);
  border:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.side-title{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:15px;
  font-weight:700;
  color:var(--text);
  margin-bottom:16px;
}
.side-title::before{
  content:"";
  width:3px;
  height:15px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--accent),rgba(43,217,196,.2));
}
.side-list li + li{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);}
.side-link{
  display:flex;
  gap:12px;
  align-items:flex-start;
}
.side-link img{
  width:72px;
  height:50px;
  flex:0 0 72px;
  border-radius:10px;
}
.side-link strong{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--text-2);
  line-height:1.55;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.side-link:hover strong{color:var(--accent);}
.side-link em{
  display:block;
  font-style:normal;
  font-size:12.5px;
  color:var(--text-3);
  margin-top:4px;
  font-variant-numeric:tabular-nums;
}
.entry-list li + li{margin-top:10px;}
.entry-list a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:11px 13px;
  border-radius:12px;
  background:var(--glass);
  border:1px solid var(--line);
  font-size:14px;
  color:var(--text-2);
}
.entry-list a:hover{color:var(--text);border-color:var(--accent-line);background:var(--accent-soft);}
.entry-list span{
  font-family:"Inter",monospace;
  font-size:12px;
  color:var(--warm);
  font-variant-numeric:tabular-nums;
}
.side-note{
  background:linear-gradient(140deg,rgba(43,217,196,.14),rgba(255,138,76,.08));
  border-color:var(--accent-line);
}
.side-note p{font-size:14px;color:var(--text-2);margin-bottom:14px;}

/* ---------- footer ---------- */
.site-footer{
  background:#050A12;
  border-top:1px solid var(--line);
  position:relative;
  padding:56px 0 26px;
  margin-top:20px;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,var(--accent),rgba(43,217,196,.05),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:34px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  font-weight:700;
  margin-bottom:14px;
}
.footer-desc{font-size:13.5px;line-height:1.85;color:var(--text-3);max-width:330px;}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col ul li + li{margin-top:10px;}
.footer-col a,.footer-col p{
  font-size:13.5px;
  color:var(--text-3);
}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  margin-top:38px;
  padding-top:20px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

@media (max-width:1024px){
  .nav-desktop{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions{margin-left:auto;}
  .nav-actions .btn{display:none;}
  body.nav-open .mobile-drawer{
    display:block;
    position:absolute;
    top:68px;
    left:0;
    right:0;
    background:rgba(8,15,28,.98);
    backdrop-filter:blur(22px);
    -webkit-backdrop-filter:blur(22px);
    border-bottom:1px solid var(--line);
    padding:10px 20px 22px;
    box-shadow:var(--shadow-hover);
  }
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{position:static;max-height:none;overflow:visible;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section{padding:48px 0 60px;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .site-header,.nav-wrap{height:60px;}
  body.nav-open .mobile-drawer{top:60px;}
  .brand-text{font-size:15.5px;}
  .article-hero{padding:28px 0 34px;}
  .article-main{padding:24px 20px 22px;}
  .article-title{font-size:1.5rem;}
  .breadcrumb .current{max-width:180px;}
  .pager{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr;}
  .btn{height:46px;padding:0 20px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .pager-card:hover,.mega-card:hover img{transform:none;}
}

/* roulang page: category1 */
:root{
    --bg:#070D18;
    --surface:#0B1526;
    --surface-2:#101C33;
    --accent:#2BD9C4;
    --accent-2:#FF8A4C;
    --text:#E8F0FA;
    --muted:#9FB2C8;
    --dim:#6B7F99;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.14);
    --glass:rgba(255,255,255,.05);
    --radius-card:16px;
    --radius-panel:20px;
    --radius-btn:12px;
    --shadow:0 8px 32px -16px rgba(0,0,0,.6);
    --shadow-hover:0 16px 48px -18px rgba(0,0,0,.75);
    --container:1220px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:Inter,"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    font-variant-numeric:tabular-nums;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  ul{list-style:none;margin:0;padding:0}
  h1,h2,h3,h4,p{margin:0}
  button{font-family:inherit;cursor:pointer}
  :focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}

  /* ---------- Logo 九宫格 ---------- */
  .grid9{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;width:26px;height:26px;flex:0 0 auto}
  .grid9 i{display:block;background:rgba(43,217,196,.85);border-radius:1.5px}
  .grid9 i:nth-child(5){background:var(--accent-2)}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    height:68px;
    display:flex;align-items:center;
    background:rgba(7,13,24,.72);
    border-bottom:1px solid transparent;
    transition:background .25s ease-out,border-color .25s ease-out,box-shadow .25s ease-out;
  }
  .site-header.is-scrolled{
    background:rgba(7,13,24,.88);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-bottom-color:var(--line);
    box-shadow:0 12px 36px -22px rgba(0,0,0,.9);
  }
  .nav-wrap{display:flex;align-items:center;gap:28px;height:100%}
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
  .brand-text em{font-style:normal;color:var(--accent)}

  .nav-main{display:flex;align-items:center;gap:28px;margin-left:8px}
  .nav-main > li{position:relative;display:flex;align-items:center;height:68px}
  .nav-link{
    position:relative;font-size:15px;font-weight:500;color:var(--muted);
    padding:6px 0;transition:color .2s ease-out;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
    background:linear-gradient(90deg,var(--accent),rgba(43,217,196,.2));
    border-radius:2px;transition:width .22s ease-out;
  }
  .nav-link:hover{color:var(--text)}
  .nav-link:hover::after{width:100%}
  .nav-link.active{color:var(--text)}
  .nav-link.active::after{width:100%;box-shadow:0 0 12px -2px rgba(43,217,196,.8)}

  .nav-cta{margin-left:auto}

  .nav-toggle{
    display:none;margin-left:auto;width:44px;height:44px;
    background:var(--glass);border:1px solid var(--line-strong);border-radius:12px;
    flex-direction:column;justify-content:center;align-items:center;gap:5px;
  }
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out}

  /* ---------- Mega 面板 ---------- */
  .mega{
    position:absolute;top:100%;left:50%;transform:translate(-50%,-6px);
    width:760px;max-width:calc(100vw - 40px);
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s;
    z-index:70;
  }
  .has-mega:hover .mega,
  .has-mega:focus-within .mega{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}
  .mega-inner{
    display:grid;grid-template-columns:1fr 1fr 1fr;gap:22px;
    padding:24px;
    background:rgba(11,21,38,.94);
    backdrop-filter:blur(22px);
    -webkit-backdrop-filter:blur(22px);
    border:1px solid var(--line-strong);
    border-radius:var(--radius-panel);
    box-shadow:0 24px 60px -30px rgba(0,0,0,.95);
  }
  .mega-title{font-size:12px;letter-spacing:.12em;color:var(--dim);margin-bottom:12px}
  .mega-list li + li{margin-top:9px}
  .mega-list a{display:flex;gap:10px;font-size:14px;color:var(--muted);transition:color .2s ease-out}
  .mega-list a:hover{color:var(--accent)}
  .mega-index{color:var(--accent-2);font-size:12px;font-weight:700;line-height:1.7}
  .mega-news li + li{margin-top:12px}
  .mega-news a{display:block;font-size:14px;color:var(--muted);transition:color .2s ease-out}
  .mega-news a:hover{color:var(--text)}
  .mega-date{display:block;font-size:12px;color:var(--dim);margin-top:2px}
  .mega-card{
    display:block;border:1px solid var(--line);border-radius:var(--radius-card);
    overflow:hidden;background:var(--glass);transition:transform .25s ease-out,border-color .25s ease-out;
  }
  .mega-card:hover{transform:translateY(-4px);border-color:rgba(43,217,196,.45)}
  .mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
  .mega-card-body{padding:12px 14px}
  .mega-card-body strong{display:block;font-size:14px;font-weight:700}
  .mega-card-body span{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--accent);margin-top:4px}
  .mega-card:hover .mega-card-body svg{transform:translateX(4px)}
  .mega-card-body svg{transition:transform .2s ease-out}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 26px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;letter-spacing:.01em;
    border:1px solid transparent;cursor:pointer;
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out,color .2s ease-out;
  }
  .btn-primary{
    background:linear-gradient(135deg,#3BE7D0,#1FBFAC);
    color:#04201D;
    box-shadow:0 0 24px -4px rgba(43,217,196,.55);
  }
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 32px -2px rgba(43,217,196,.8);border-color:rgba(43,217,196,.9)}
  .btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
  .btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
  .btn-sm{height:42px;padding:0 20px;font-size:14px}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent)}
  .link-arrow svg{transition:transform .2s ease-out}
  .link-arrow:hover svg{transform:translateX(4px)}

  /* ---------- 页头 banner ---------- */
  .page-hero{
    position:relative;overflow:hidden;
    padding:76px 0 68px;
    background-image:linear-gradient(90deg,rgba(7,13,24,.98) 0%,rgba(7,13,24,.82) 48%,rgba(7,13,24,.55) 100%),
      url('/assets/images/backpic/back-2.png');
    background-size:cover;background-position:center;
    border-bottom:1px solid var(--line);
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:radial-gradient(rgba(43,217,196,.5) 1px,transparent 1px);
    background-size:22px 22px;opacity:.06;
  }
  .page-hero .container{position:relative;z-index:1}
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--dim);margin-bottom:16px}
  .breadcrumb a{color:var(--dim);transition:color .2s ease-out}
  .breadcrumb a:hover{color:var(--accent)}
  .breadcrumb .sep{color:rgba(255,255,255,.18)}
  .breadcrumb .current{color:var(--text);max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .page-hero h1{
    font-size:clamp(1.75rem,3.4vw,2.6rem);
    line-height:1.2;font-weight:800;letter-spacing:-.01em;max-width:22ch;
  }
  .page-hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
  .page-hero .lede{margin-top:16px;font-size:16px;color:var(--muted);max-width:62ch;line-height:1.8}
  .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
  .chip{
    display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 14px;
    border-radius:999px;font-size:13px;color:var(--muted);
    background:var(--glass);border:1px solid var(--line);
  }
  .chip i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block}
  .chip.warm i{background:var(--accent-2)}

  /* ---------- 主体布局 ---------- */
  .main-block{padding:72px 0 88px}
  .layout{display:grid;grid-template-columns:252px 1fr;gap:36px;align-items:start}

  .toc{
    position:sticky;top:96px;
    background:rgba(11,21,38,.72);
    border:1px solid var(--line);border-radius:var(--radius-panel);
    padding:22px 20px;
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
  }
  .toc h2{font-size:13px;letter-spacing:.12em;color:var(--dim);font-weight:600;margin-bottom:14px}
  .toc ul li + li{margin-top:4px}
  .toc a{
    display:flex;align-items:center;gap:10px;
    padding:10px 12px;border-radius:10px;
    font-size:14px;color:var(--muted);
    border-left:2px solid transparent;
    transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  }
  .toc a .num{font-size:12px;color:var(--dim);font-weight:700}
  .toc a:hover{background:rgba(255,255,255,.04);color:var(--text)}
  .toc a.is-active{background:rgba(43,217,196,.09);color:var(--text);border-left-color:var(--accent)}
  .toc a.is-active .num{color:var(--accent)}
  .toc-note{
    margin-top:18px;padding-top:18px;border-top:1px solid var(--line);
    font-size:13px;color:var(--dim);line-height:1.7;
  }
  .toc-cta{margin-top:16px;display:block;width:100%}

  /* ---------- 分节 ---------- */
  .section + .section{margin-top:64px}
  .sec-head{margin-bottom:24px}
  .sec-head h2{
    position:relative;padding-left:16px;
    font-size:clamp(1.35rem,2.2vw,1.75rem);font-weight:700;letter-spacing:-.01em;line-height:1.3;
  }
  .sec-head h2::before{
    content:"";position:absolute;left:0;top:.28em;width:4px;height:1.05em;border-radius:2px;
    background:linear-gradient(180deg,var(--accent),rgba(43,217,196,.15));
  }
  .sec-head p{margin-top:10px;font-size:15px;color:var(--muted);max-width:70ch}

  .entry-list{display:grid;gap:16px}
  .entry-card{
    position:relative;display:flex;align-items:flex-start;gap:18px;
    padding:24px 26px;
    background:rgba(255,255,255,.045);
    border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow);
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out,background .2s ease-out;
  }
  .entry-card:hover{
    transform:translateY(-4px);
    border-color:rgba(43,217,196,.42);
    box-shadow:var(--shadow-hover),0 0 0 1px rgba(43,217,196,.22);
    background:rgba(255,255,255,.06);
  }
  .entry-num{
    flex:0 0 auto;min-width:42px;font-size:15px;font-weight:800;
    color:var(--accent-2);letter-spacing:.02em;padding-top:2px;
  }
  .entry-body{flex:1 1 auto;min-width:0}
  .entry-body h3{font-size:17px;font-weight:700;line-height:1.5}
  .entry-body p{margin-top:8px;font-size:15px;color:var(--muted);line-height:1.8}
  .entry-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
  .tag{
    display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;
    font-size:12px;color:var(--muted);background:rgba(255,255,255,.05);border:1px solid var(--line);
  }
  .tag.accent{color:var(--accent);border-color:rgba(43,217,196,.3);background:rgba(43,217,196,.08)}
  .entry-go{
    flex:0 0 auto;align-self:center;width:38px;height:38px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    border:1px solid var(--line-strong);color:var(--muted);
    transition:transform .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  }
  .entry-card:hover .entry-go{color:var(--accent);border-color:rgba(43,217,196,.5);transform:translateX(4px)}

  .figure-block{
    margin-top:22px;border-radius:var(--radius-card);overflow:hidden;
    border:1px solid var(--line);background:var(--surface);
  }
  .figure-block img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease-out}
  .figure-block:hover img{transform:scale(1.03)}
  .figure-block figcaption{padding:12px 16px;font-size:13px;color:var(--dim);border-top:1px solid var(--line)}

  .note-card{
    margin-top:22px;padding:22px 24px;border-radius:var(--radius-card);
    background:linear-gradient(135deg,rgba(43,217,196,.09),rgba(255,138,76,.05));
    border:1px solid rgba(43,217,196,.22);
  }
  .note-card h3{font-size:16px;font-weight:700;display:flex;align-items:center;gap:10px}
  .note-card p{margin-top:10px;font-size:15px;color:var(--muted)}

  /* ---------- 相关分类 ---------- */
  .related{margin-top:72px}
  .related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:22px}
  .rel-card{
    display:flex;gap:18px;padding:20px;border-radius:var(--radius-card);
    background:rgba(255,255,255,.045);border:1px solid var(--line);
    box-shadow:var(--shadow);
    transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
  }
  .rel-card:hover{transform:translateY(-4px);border-color:rgba(43,217,196,.4);box-shadow:var(--shadow-hover)}
  .rel-card img{width:104px;height:72px;object-fit:cover;border-radius:12px;flex:0 0 auto}
  .rel-card h3{font-size:16px;font-weight:700}
  .rel-card p{margin-top:6px;font-size:14px;color:var(--muted);line-height:1.7}
  .rel-card .link-arrow{margin-top:8px;font-size:13px}

  /* ---------- CTA 带 ---------- */
  .cta-band{
    position:relative;overflow:hidden;margin-top:72px;
    border-radius:var(--radius-panel);
    border:1px solid var(--line-strong);
    background:linear-gradient(120deg,rgba(16,28,51,.95),rgba(11,21,38,.95));
    padding:40px 36px;
  }
  .cta-band::after{
    content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
    background:radial-gradient(circle,rgba(43,217,196,.22),transparent 68%);
    pointer-events:none;
  }
  .cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
  .cta-inner h2{font-size:clamp(1.25rem,2vw,1.6rem);font-weight:700;line-height:1.35}
  .cta-inner p{margin-top:8px;font-size:15px;color:var(--muted);max-width:56ch}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap}

  /* ---------- Footer ---------- */
  .site-footer{
    margin-top:96px;background:#050A12;
    border-top:1px solid var(--line);
    position:relative;
  }
  .site-footer::before{
    content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(43,217,196,.75),transparent);
  }
  .footer-grid{
    display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
    padding:56px 0 40px;
  }
  .footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:800}
  .footer-desc{margin-top:16px;font-size:14px;color:var(--dim);line-height:1.85;max-width:42ch}
  .footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--text)}
  .footer-col li + li{margin-top:10px}
  .footer-col a,.footer-col p{font-size:14px;color:var(--dim);transition:color .2s ease-out;line-height:1.7}
  .footer-col a:hover{color:var(--accent)}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    padding:20px 0 28px;border-top:1px solid var(--line);
    font-size:13px;color:var(--dim);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .layout{grid-template-columns:1fr;gap:28px}
    .toc{position:static}
    .toc ul{display:grid;grid-template-columns:repeat(2,1fr);gap:4px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  }
  @media (max-width:900px){
    .nav-toggle{display:flex}
    .nav-main{
      position:fixed;top:68px;left:0;right:0;bottom:0;
      flex-direction:column;align-items:stretch;gap:0;margin:0;
      background:rgba(7,13,24,.98);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
      padding:14px 20px 40px;
      overflow-y:auto;
      display:none;
    }
    .nav-main > li{display:block;height:auto;border-bottom:1px solid var(--line)}
    .nav-main .nav-link{display:block;padding:16px 0;font-size:16px}
    .nav-main .nav-link::after{display:none}
    .nav-main .nav-link.active{color:var(--accent)}
    .mega{position:static;transform:none;width:auto;max-width:none;opacity:1;visibility:visible;pointer-events:auto;padding:0 0 16px}
    .mega-inner{grid-template-columns:1fr;background:transparent;border:0;box-shadow:none;padding:0 0 6px;gap:20px}
    .nav-open .nav-main{display:flex}
    .nav-cta{display:none}
    .nav-open .nav-cta{display:inline-flex;margin:18px 0 0}
    .nav-open .nav-wrap{flex-wrap:wrap}
  }
  @media (max-width:640px){
    .container{padding:0 16px}
    .site-header{height:60px}
    .nav-main{top:60px}
    .brand-text{font-size:15px}
    .page-hero{padding:56px 0 48px}
    .main-block{padding:52px 0 64px}
    .section + .section{margin-top:52px}
    .entry-card{padding:20px 18px;gap:14px;flex-wrap:wrap}
    .entry-go{width:34px;height:34px}
    .related-grid{grid-template-columns:1fr}
    .rel-card img{width:86px;height:62px}
    .toc ul{grid-template-columns:1fr}
    .cta-band{padding:28px 22px}
    .cta-actions{width:100%}
    .cta-actions .btn{flex:1 1 auto}
    .footer-grid{grid-template-columns:1fr;padding:44px 0 30px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important}
    html{scroll-behavior:auto}
    .entry-card:hover,.rel-card:hover,.mega-card:hover,.btn:hover{transform:none}
    .figure-block:hover img{transform:none}
  }

/* roulang page: category2 */
:root{
  --bg:#070D18;
  --bg-2:#0B1526;
  --bg-3:#101C33;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --text:#E8F0FA;
  --text-2:#9FB2C8;
  --text-3:#6B7F99;
  --jade:#2BD9C4;
  --jade-soft:rgba(43,217,196,.14);
  --amber:#FF8A4C;
  --glass:rgba(255,255,255,.05);
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 8px 32px -16px rgba(0,0,0,.6);
  --shadow-hover:0 16px 48px -18px rgba(0,0,0,.75);
  --header-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:none}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--jade);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:1220px;margin:0 auto;padding:0 20px}
.section{padding:96px 0}
.section-sm{padding:64px 0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  height:var(--header-h);
  background:rgba(7,13,24,.72);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transition:background .24s ease-out,box-shadow .24s ease-out;
}
.site-header.is-scrolled{background:rgba(7,13,24,.92);box-shadow:0 12px 40px -22px rgba(0,0,0,.9)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:100%}
.brand{display:inline-flex;align-items:center;gap:11px;font-weight:700;flex-shrink:0}
.brand-text{font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--jade)}
.grid9{display:grid;grid-template-columns:repeat(3,1fr);gap:3px;width:26px;height:26px;flex-shrink:0}
.grid9 i{background:rgba(43,217,196,.55);border-radius:2px;display:block}
.grid9 i:nth-child(5){background:var(--amber)}
.grid9 i:nth-child(2),.grid9 i:nth-child(6){background:rgba(43,217,196,.85)}

.nav-main{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;display:inline-block;padding:22px 0;
  font-size:15px;font-weight:500;color:var(--text-2);
  transition:color .2s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  background:linear-gradient(90deg,var(--jade),rgba(43,217,196,0));
  width:0;transition:width .24s ease-out;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--text)}
.nav-link.active::after{width:100%}

.has-mega{position:relative}
.mega{
  position:absolute;top:100%;left:50%;
  transform:translate(-50%,-6px);
  width:800px;max-width:calc(100vw - 40px);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s;
  z-index:90;
}
.has-mega:hover .mega,.has-mega:focus-within .mega{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}
.mega-inner{
  display:grid;grid-template-columns:1fr 1fr 1.1fr;gap:24px;
  padding:24px;border-radius:var(--radius-lg);
  background:rgba(11,21,38,.94);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(22px);
  -webkit-backdrop-filter:blur(22px);
  box-shadow:0 24px 64px -24px rgba(0,0,0,.85);
}
.mega-title{font-size:12px;letter-spacing:.14em;color:var(--text-3);text-transform:uppercase;margin-bottom:12px}
.mega-list li,.mega-news li{border-bottom:1px solid var(--line)}
.mega-list li:last-child,.mega-news li:last-child{border-bottom:none}
.mega-list a,.mega-news a{display:block;padding:10px 0;font-size:14px;color:var(--text-2);transition:color .2s ease-out,padding-left .2s ease-out}
.mega-list a:hover,.mega-news a:hover{color:var(--jade);padding-left:4px}
.mega-index{display:inline-block;width:26px;color:var(--amber);font-weight:700;font-size:12px}
.mega-date{display:block;font-size:12px;color:var(--text-3);margin-top:2px}
.mega-card{
  display:block;border-radius:var(--radius);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);
  transition:transform .24s ease-out,border-color .24s ease-out;
}
.mega-card:hover{transform:translateY(-4px);border-color:rgba(43,217,196,.45)}
.mega-card img{aspect-ratio:16/9;object-fit:cover;width:100%}
.mega-card-body{padding:14px 16px;display:flex;flex-direction:column;gap:4px}
.mega-card-body strong{font-size:14px}
.mega-card-body span{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--jade)}
.mega-card:hover .mega-card-body span svg{transform:translateX(4px)}
.mega-card-body span svg{transition:transform .2s ease-out}

.nav-cta{height:44px;padding:0 22px;font-size:14px}
.nav-toggle{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:5px;border-radius:var(--radius-sm);border:1px solid var(--line-strong)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out}
.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-open .nav-toggle span:nth-child(2){opacity:0}
.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out,color .2s ease-out,background .2s ease-out;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#2BD9C4,#41E3CE);
  color:#04211E;
  box-shadow:0 0 24px -4px rgba(43,217,196,.55);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 32px -2px rgba(43,217,196,.72)}
.btn-ghost{background:rgba(255,255,255,.03);border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--jade);color:var(--jade);transform:translateY(-2px)}
.btn-sm{height:44px;padding:0 20px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--jade)}
.link-arrow svg{transition:transform .2s ease-out}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- banner ---------- */
.page-banner{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.banner-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.banner-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(7,13,24,.96) 0%,rgba(7,13,24,.86) 45%,rgba(7,13,24,.62) 100%);
}
.banner-dots{
  position:absolute;inset:0;opacity:.06;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:26px 26px;
}
.banner-inner{position:relative;padding:58px 0 62px;min-height:260px;display:flex;flex-direction:column;justify-content:center;gap:16px}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb a{color:var(--text-3);transition:color .2s ease-out}
.breadcrumb a:hover{color:var(--jade)}
.breadcrumb .current{color:var(--text)}
.breadcrumb span.sep{color:rgba(255,255,255,.22)}
.banner-inner h1{font-size:clamp(2rem,4.2vw,3.1rem);line-height:1.18;font-weight:800;max-width:820px}
.banner-sub{font-size:16px;color:var(--text-2);max-width:640px}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:13px;
  background:var(--jade-soft);border:1px solid rgba(43,217,196,.35);color:var(--jade);
}
.tag-amber{background:rgba(255,138,76,.12);border-color:rgba(255,138,76,.35);color:var(--amber)}

/* ---------- tabs ---------- */
.tabs-bar{position:sticky;top:var(--header-h);z-index:40;padding:16px 0;background:rgba(7,13,24,.86);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.tabs{display:flex;gap:10px;flex-wrap:wrap;padding:8px;border-radius:var(--radius);background:var(--glass);border:1px solid var(--line);width:fit-content}
.tab{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:var(--radius-sm);
  font-size:14px;font-weight:500;color:var(--text-2);
  border:1px solid transparent;transition:all .2s ease-out;
}
.tab:hover{color:var(--text);background:rgba(255,255,255,.05)}
.tab.active{background:rgba(43,217,196,.14);border-color:rgba(43,217,196,.4);color:var(--jade);font-weight:600}
.tab .tab-dot{width:6px;height:6px;border-radius:999px;background:currentColor;opacity:.7}

/* ---------- section head ---------- */
.sec-head{max-width:720px;margin-bottom:44px}
.sec-title{position:relative;padding-left:16px;font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:700;line-height:1.3}
.sec-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:linear-gradient(180deg,var(--jade),rgba(43,217,196,.15))}
.sec-desc{margin-top:14px;color:var(--text-2);font-size:15px;padding-left:16px;max-width:640px}

/* ---------- timeline ---------- */
.timeline{position:relative;display:flex;flex-direction:column;gap:26px}
.tl-item{position:relative;display:grid;grid-template-columns:60px 1fr;gap:22px}
.tl-item::before{
  content:"";position:absolute;left:29px;top:66px;bottom:-26px;width:1px;
  background:linear-gradient(180deg,rgba(43,217,196,.5),rgba(43,217,196,0));
}
.tl-item:last-child::before{display:none}
.tl-node{
  width:60px;height:60px;border-radius:999px;
  display:grid;grid-template-columns:repeat(3,1fr);gap:4px;
  align-content:center;justify-items:center;
  padding:14px;
  background:linear-gradient(150deg,rgba(43,217,196,.18),rgba(11,21,38,.9));
  border:1px solid rgba(43,217,196,.35);
  box-shadow:0 0 22px -8px rgba(43,217,196,.6);
}
.tl-node i{width:5px;height:5px;border-radius:999px;background:var(--jade);opacity:.85;display:block}
.tl-node i:nth-child(5){background:var(--amber);opacity:1}
.tl-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;display:grid;grid-template-columns:1fr 250px;gap:26px;align-items:start;
  box-shadow:var(--shadow);
  transition:transform .24s ease-out,box-shadow .24s ease-out,border-color .24s ease-out;
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(43,217,196,.35);box-shadow:var(--shadow-hover)}
.tl-no{font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--amber)}
.tl-card h3{font-size:1.25rem;font-weight:700;margin-top:8px;margin-bottom:12px}
.tl-card p{font-size:15px;line-height:1.85;color:var(--text-2);margin-bottom:12px}
.tl-card p:last-of-type{margin-bottom:0}
.tl-points{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.tl-points li{position:relative;padding-left:18px;font-size:14px;color:var(--text-2)}
.tl-points li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:999px;background:var(--jade);opacity:.8}
.tl-media{border-radius:14px;overflow:hidden;border:1px solid var(--line);background:var(--bg-3)}
.tl-media img{aspect-ratio:16/9;object-fit:cover;width:100%;transition:transform .4s ease-out}
.tl-card:hover .tl-media img{transform:scale(1.03)}
.tl-media figcaption{font-size:12px;color:var(--text-3);padding:10px 12px;border-top:1px solid var(--line)}

/* ---------- hint cards ---------- */
.hint-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.hint-card{
  padding:24px;border-radius:var(--radius);background:var(--bg-2);
  border:1px solid var(--line);box-shadow:var(--shadow);
  transition:transform .24s ease-out,border-color .24s ease-out;
}
.hint-card:hover{transform:translateY(-4px);border-color:rgba(255,138,76,.4)}
.hint-ico{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:rgba(255,138,76,.12);border:1px solid rgba(255,138,76,.3);color:var(--amber);margin-bottom:14px}
.hint-card h3{font-size:16px;font-weight:700;margin-bottom:8px}
.hint-card p{font-size:14px;color:var(--text-2)}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:1fr;gap:14px;max-width:920px}
details.faq{
  border:1px solid var(--line);border-radius:var(--radius);background:var(--glass);
  padding:0 22px;transition:border-color .2s ease-out,background .2s ease-out;
}
details.faq:hover{border-color:rgba(43,217,196,.35)}
details.faq[open]{border-color:rgba(43,217,196,.45);background:rgba(43,217,196,.05)}
details.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  padding:20px 0;font-size:16px;font-weight:600;
}
details.faq summary::-webkit-details-marker{display:none}
.faq-dot9{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;width:16px;height:16px;flex-shrink:0}
.faq-dot9 i{width:4px;height:4px;border-radius:1px;background:var(--jade);opacity:.75;display:block}
.faq-plus{margin-left:auto;color:var(--text-3);transition:transform .2s ease-out,color .2s ease-out;flex-shrink:0}
details.faq[open] .faq-plus{transform:rotate(45deg);color:var(--jade)}
.faq-body{padding:0 0 20px 30px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:38px 40px;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,rgba(43,217,196,.14),rgba(255,138,76,.10));
  border:1px solid var(--line-strong);
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-70px;width:260px;height:260px;border-radius:999px;
  background:radial-gradient(circle,rgba(43,217,196,.22),transparent 68%);
}
.cta-band-text{position:relative}
.cta-band h2{font-size:clamp(1.3rem,2.2vw,1.75rem);font-weight:700;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--text-2);max-width:620px}
.cta-actions{position:relative;display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:#050A12;position:relative;margin-top:20px}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,rgba(43,217,196,.85),rgba(43,217,196,0))}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:68px 0 44px}
.footer-brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:16px;margin-bottom:16px}
.footer-desc{font-size:13px;line-height:1.85;color:var(--text-3);max-width:340px}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:18px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col p{font-size:13px;color:var(--text-3);transition:color .2s ease-out}
.footer-col a:hover{color:var(--jade)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 34px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .mega{width:700px}
  .mega-inner{grid-template-columns:1fr 1fr;gap:20px}
  .mega-inner>div:nth-child(3){display:none}
}
@media (max-width:1024px){
  :root{--header-h:60px}
  .section{padding:64px 0}
  .section-sm{padding:46px 0}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .nav-main{
    position:fixed;left:0;right:0;top:var(--header-h);bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    padding:18px 20px 40px;overflow-y:auto;
    background:rgba(7,13,24,.98);
    backdrop-filter:blur(20px);
    border-top:1px solid var(--line);
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-8px);
    transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s;
  }
  .nav-open .nav-main{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
  .nav-main li{border-bottom:1px solid var(--line)}
  .nav-link{display:block;padding:18px 0;font-size:16px}
  .nav-link::after{bottom:10px}
  .mega{display:none}
  .tl-card{grid-template-columns:1fr}
  .tl-media{order:-1}
  .hint-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 36px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 26px}
  .tabs-bar{top:60px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .banner-inner{padding:44px 0 50px;min-height:240px}
  .timeline{gap:20px}
  .tl-item{grid-template-columns:1fr;gap:14px}
  .tl-item::before{display:none}
  .tl-node{width:48px;height:48px;padding:11px}
  .tl-card{padding:22px;gap:18px}
  .hint-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:6px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .sec-head{margin-bottom:30px}
  .faq-body{padding-left:0}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
}

/* roulang page: category3 */
:root{
  --bg:#070D18;
  --bg-2:#0B1526;
  --bg-3:#101C33;
  --accent:#2BD9C4;
  --accent-2:#3FE3D1;
  --warm:#FF8A4C;
  --text:#E8F0FA;
  --text-2:#9FB2C8;
  --text-3:#6B7F99;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.05);
  --radius-card:16px;
  --radius-panel:20px;
  --radius-btn:12px;
  --shadow:0 8px 32px -16px rgba(0,0,0,.6);
  --shadow-hover:0 16px 48px -18px rgba(0,0,0,.75);
  --glow:0 0 24px -4px rgba(43,217,196,.55);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body.page-body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:Inter,"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body.page-body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(680px 380px at 12% -6%,rgba(43,217,196,.10),transparent 70%),
    radial-gradient(620px 360px at 92% 4%,rgba(255,138,76,.07),transparent 72%);
  z-index:0;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
summary{list-style:none}
summary::-webkit-details-marker{display:none}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
.tnum{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ===== 九宫格点阵母题 ===== */
.grid9{display:grid;grid-template-columns:repeat(3,4px);grid-template-rows:repeat(3,4px);gap:3px;flex:none}
.grid9 i{display:block;width:4px;height:4px;border-radius:50%;background:rgba(43,217,196,.85)}
.grid9 i:nth-child(5){background:var(--warm)}
.grid9-sm{grid-template-columns:repeat(3,3px);grid-template-rows:repeat(3,3px);gap:2px}
.grid9-sm i{width:3px;height:3px}

/* ===== 头部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,13,24,.72);
  border-bottom:1px solid transparent;
  transition:background .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.site-header.is-scrolled{
  background:rgba(7,13,24,.88);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--line);
  box-shadow:0 12px 40px -26px rgba(0,0,0,.95);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--text);white-space:nowrap}
.brand-text em{
  font-style:normal;
  background:linear-gradient(90deg,var(--accent),var(--warm));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.nav-main{display:flex;align-items:center;gap:28px}
.nav-main>li{position:relative}
.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  transition:color .2s ease-out;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;border-radius:2px;
  background:var(--accent);
  box-shadow:0 0 10px rgba(43,217,196,.7);
  transition:width .2s ease-out;
}
.nav-link:hover,.nav-link:focus-visible,.nav-link.active{color:var(--text)}
.nav-link:hover::after,.nav-link:focus-visible::after,.nav-link.active::after{width:100%}
.nav-link:focus-visible{outline:2px solid rgba(43,217,196,.6);outline-offset:6px;border-radius:4px}
.nav-actions{display:flex;align-items:center;gap:14px;flex:none}

/* ===== Mega 面板 ===== */
.mega{
  position:absolute;
  top:calc(100% + 14px);
  left:-70px;
  width:min(820px,calc(100vw - 48px));
  padding:22px;
  border-radius:var(--radius-panel);
  background:rgba(11,21,38,.95);
  border:1px solid var(--line-2);
  backdrop-filter:blur(22px);
  -webkit-backdrop-filter:blur(22px);
  box-shadow:0 26px 64px -34px rgba(0,0,0,.95);
  opacity:0;visibility:hidden;
  transform:translateY(-6px);
  transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s ease-out;
}
.has-mega:hover .mega,
.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0)}
.mega-inner{display:grid;grid-template-columns:1.15fr 1fr .9fr;gap:22px}
.mega-title{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--text-3);margin-bottom:12px}
.mega-list li+li,.mega-news li+li{margin-top:6px}
.mega-list a,.mega-news a{
  display:flex;
  gap:10px;
  align-items:baseline;
  padding:7px 8px;
  border-radius:10px;
  font-size:14px;
  color:var(--text-2);
  transition:background .2s ease-out,color .2s ease-out;
}
.mega-list a:hover,.mega-news a:hover{background:rgba(43,217,196,.08);color:var(--text)}
.mega-index{font-size:12px;color:var(--warm);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.mega-news a{flex-direction:column;gap:2px;align-items:flex-start}
.mega-date{font-size:12px;color:var(--text-3)}
.mega-card{
  display:block;
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--line-2);
  background:var(--glass);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.mega-card:hover{transform:translateY(-4px);border-color:rgba(43,217,196,.4);box-shadow:var(--shadow-hover)}
.mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.mega-card-body{padding:12px 14px 14px}
.mega-card-body strong{display:block;font-size:15px;font-weight:700;margin-bottom:4px}
.mega-card-body span{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--accent);transition:gap .2s ease-out}
.mega-card:hover .mega-card-body span{gap:10px}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out,color .2s ease-out,background .2s ease-out;
}
.btn-primary{
  background:linear-gradient(96deg,var(--accent),var(--accent-2));
  color:#04121A;
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 30px -2px rgba(43,217,196,.75)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);transform:translateY(-2px)}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.btn:focus-visible{outline:2px solid rgba(43,217,196,.7);outline-offset:3px}
.link-cta{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent);transition:gap .2s ease-out}
.link-cta:hover{gap:10px}

/* ===== 汉堡 ===== */
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;flex-direction:column;gap:5px;border-radius:12px;border:1px solid var(--line-2)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .2s ease-out,opacity .2s ease-out}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== 页面横幅 ===== */
.page-banner{
  position:relative;
  display:flex;align-items:center;
  min-height:264px;
  padding:76px 0 64px;
  background:#070D18 url(/assets/images/backpic/back-2.png) center/cover no-repeat;
  overflow:hidden;
}
.page-banner::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,13,24,.97) 0%,rgba(7,13,24,.86) 46%,rgba(7,13,24,.66) 100%);
}
.page-banner::after{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:26px 26px;
  opacity:.05;
}
.page-banner .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.crumb a{transition:color .2s ease-out}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:rgba(255,255,255,.22)}
.crumb em{font-style:normal;color:var(--text);max-width:22ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.page-banner h1{
  margin:16px 0 12px;
  font-size:clamp(1.9rem,4vw,2.9rem);
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.01em;
  max-width:22ch;
}
.banner-sub{max-width:62ch;font-size:15px;color:var(--text-2)}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:30px;padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line-2);
  background:rgba(255,255,255,.04);
  font-size:13px;color:var(--text-2);
}
.tag-hot{border-color:rgba(255,138,76,.4);color:#FFC6A3}

/* ===== 区块基础 ===== */
.section{padding:88px 0}
.section-alt{background:linear-gradient(180deg,transparent,rgba(16,28,51,.55) 30%,transparent)}
.sec-head{margin-bottom:36px}
.sec-title{
  display:flex;align-items:center;gap:12px;
  font-size:clamp(1.42rem,2.4vw,2rem);
  font-weight:700;
  letter-spacing:-.01em;
  line-height:1.3;
}
.sec-title::before{
  content:"";
  width:4px;height:26px;border-radius:4px;
  background:linear-gradient(180deg,var(--accent),var(--warm));
  flex:none;
}
.sec-desc{margin-top:12px;font-size:15px;color:var(--text-2);max-width:64ch}

/* ===== 快速自查卡 ===== */
.check-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.glass-card{
  background:var(--glass);
  border:1px solid var(--line-2);
  border-radius:var(--radius-card);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.check-card{padding:24px 22px;display:flex;flex-direction:column;height:100%}
.check-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(43,217,196,.38)}
.check-num{font-size:13px;letter-spacing:.1em;color:var(--warm);font-variant-numeric:tabular-nums}
.check-card h3{margin:12px 0 8px;font-size:1.0625rem;font-weight:600;line-height:1.5}
.check-card p{font-size:14px;line-height:1.8;color:var(--text-2)}
.check-card .link-cta{margin-top:auto;padding-top:16px}

/* ===== FAQ 主体 ===== */
.faq-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:24px;align-items:start}
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;align-items:start}
.faq{padding:0;overflow:hidden}
.faq:hover{border-color:rgba(43,217,196,.32)}
.faq summary{
  display:flex;align-items:flex-start;gap:12px;
  padding:20px 22px;
  cursor:pointer;
  font-size:15.5px;
  font-weight:600;
  line-height:1.6;
  color:var(--text);
  transition:background .2s ease-out;
}
.faq summary:hover{background:rgba(255,255,255,.03)}
.faq summary:focus-visible{outline:2px solid rgba(43,217,196,.6);outline-offset:-2px}
.faq summary .grid9{margin-top:6px}
.faq-q{flex:1}
.faq-plus{
  flex:none;
  font-size:20px;
  line-height:1;
  color:var(--accent);
  transition:transform .2s ease-out;
}
.faq[open] .faq-plus{transform:rotate(45deg)}
.faq-body{padding:0 22px 20px 22px;font-size:15px;line-height:1.85;color:var(--text-2)}
.faq-body p+p{margin-top:12px}

/* ===== 侧栏联系卡 ===== */
.side-card{
  position:sticky;top:92px;
  padding:26px 24px;
  border-radius:var(--radius-panel);
  border:1px solid rgba(43,217,196,.24);
  background:linear-gradient(180deg,rgba(16,28,51,.92),rgba(11,21,38,.92));
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  box-shadow:var(--shadow);
}
.side-card h3{font-size:1.125rem;font-weight:700;margin-bottom:8px}
.side-card>p{font-size:14px;color:var(--text-2);line-height:1.8}
.info-list{margin:20px 0 22px}
.info-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7}
.info-list li+li{margin-top:12px;padding-top:12px;border-top:1px solid var(--line)}
.info-list strong{display:block;color:var(--text);font-weight:600;font-size:14px;margin-bottom:2px}
.info-list .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px rgba(43,217,196,.8);margin-top:9px;flex:none}
.side-note{font-size:13px;color:var(--text-3);margin-top:14px;line-height:1.7}

/* ===== 反馈准备 ===== */
.prep-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.prep-card{padding:26px 24px;height:100%}
.prep-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(43,217,196,.35)}
.prep-icon{
  width:42px;height:42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(43,217,196,.12);
  border:1px solid rgba(43,217,196,.28);
  color:var(--accent);
}
.prep-card h3{margin:16px 0 8px;font-size:1.0625rem;font-weight:600}
.prep-card p{font-size:14.5px;line-height:1.85;color:var(--text-2)}

/* ===== 底部 CTA 带 ===== */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:36px 40px;
  border-radius:var(--radius-panel);
  border:1px solid rgba(43,217,196,.28);
  background:
    linear-gradient(100deg,rgba(43,217,196,.16),rgba(255,138,76,.12)),
    var(--bg-2);
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.05;
  pointer-events:none;
}
.cta-band>div{position:relative;z-index:1}
.cta-band h2{font-size:clamp(1.25rem,2.2vw,1.6rem);font-weight:700;line-height:1.4;max-width:30ch}
.cta-band p{margin-top:8px;font-size:14.5px;color:var(--text-2);max-width:56ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ===== 页脚 ===== */
.site-footer{
  background:#050A12;
  border-top:1px solid transparent;
  background-image:linear-gradient(#050A12,#050A12),linear-gradient(90deg,var(--accent),rgba(43,217,196,0));
  background-origin:border-box;
  background-clip:padding-box,border-box;
  margin-top:24px;
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700}
.footer-desc{margin-top:14px;font-size:13.5px;line-height:1.85;color:var(--text-3);max-width:36ch}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px}
.footer-col li+li{margin-top:10px}
.footer-col a,.footer-col p{font-size:13.5px;color:var(--text-3);line-height:1.8;transition:color .2s ease-out}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ===== 响应式 ===== */
@media (max-width:1180px){
  .mega{left:-140px}
}
@media (max-width:1023px){
  .nav-wrap{height:60px}
  .nav-toggle{display:flex}
  .nav-main{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    padding:16px 20px 40px;
    background:rgba(7,13,24,.98);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    border-top:1px solid var(--line);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s ease-out;
    overflow-y:auto;
  }
  body.nav-open .nav-main{opacity:1;visibility:visible;transform:none}
  .nav-main>li{width:100%;border-bottom:1px solid var(--line)}
  .nav-link{display:block;padding:16px 2px;font-size:17px}
  .nav-link::after{display:none}
  .mega{display:none}
  .section{padding:64px 0}
  .check-grid{grid-template-columns:repeat(2,1fr)}
  .faq-layout{grid-template-columns:1fr}
  .side-card{position:static}
  .prep-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:768px){
  .faq-grid{grid-template-columns:1fr}
  .page-banner{padding:56px 0 48px;min-height:220px}
  .cta-band{padding:28px 22px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand-text{font-size:15px}
  .btn{padding:0 20px}
  .nav-actions .btn-sm{display:none}
  .section{padding:56px 0}
  .check-grid{grid-template-columns:1fr;gap:14px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}