/* roulang page: index */
:root{
  --bg:#0A0D14;
  --surface:#0F1520;
  --card:#141C2A;
  --primary:#00E0C6;
  --primary-hover:#33EBD6;
  --primary-active:#00B8A3;
  --accent:#FF7A2F;
  --accent-hover:#FF9552;
  --violet:#6C5CE7;
  --text:#E9EFF7;
  --text-2:#9BA8BE;
  --text-3:#6B7789;
  --ok:#3DD68C;
  --warn:#FFB020;
  --err:#FF5A5F;
  --line:rgba(255,255,255,0.08);
  --line-strong:rgba(255,255,255,0.18);
  --glass:rgba(255,255,255,0.045);
  --r-lg:20px;
  --r-md:16px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow:0 8px 30px rgba(0,0,0,0.45);
  --sidebar-w:248px;
  --gap:24px;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  box-shadow:0 0 0 4px rgba(0,224,198,0.22);
  border-radius:8px;
}
::selection{background:rgba(0,224,198,0.28);color:#fff;}

/* ---------- 侧栏 / 导航 ---------- */
.sidebar{
  position:fixed;left:0;top:0;height:100vh;width:var(--sidebar-w);
  background:var(--surface);
  border-right:1px solid rgba(255,255,255,0.06);
  display:flex;flex-direction:column;
  padding:0 16px 18px;
  z-index:60;
}
.brand{
  height:72px;display:flex;align-items:center;gap:10px;flex:0 0 auto;
}
.brand-mark{
  width:30px;height:30px;flex:0 0 30px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--violet));
  position:relative;
  box-shadow:0 0 18px rgba(0,224,198,0.38);
}
.brand-mark::after{
  content:"";position:absolute;left:50%;top:50%;width:10px;height:10px;
  transform:translate(-50%,-50%) rotate(45deg);
  background:#07110F;border-radius:2px;
}
.brand-text{font-size:16px;font-weight:700;letter-spacing:0;color:var(--text);line-height:1.2;}
.brand-text small{display:block;font-size:11px;font-weight:400;color:var(--text-3);letter-spacing:.02em;}
.nav-group{display:flex;flex-direction:column;gap:4px;margin-top:8px;}
.nav-title{font-size:11px;color:var(--text-3);padding:8px 12px 4px;letter-spacing:.08em;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:44px;padding:0 12px;border-radius:10px;
  color:var(--text-2);font-size:15px;
  transition:background .2s ease-out,color .2s ease-out;
}
.nav-item svg{width:18px;height:18px;flex:0 0 18px;}
.nav-item:hover{background:rgba(255,255,255,0.05);color:var(--text);}
.nav-item.active{background:rgba(0,224,198,0.10);color:var(--primary);}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(0,224,198,0.7);
}
.sidebar-divider{height:1px;background:rgba(255,255,255,0.06);margin:16px 4px;}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;}
.side-foot a{font-size:12px;color:var(--text-3);transition:color .2s ease-out;}
.side-foot a:hover{color:var(--primary);}
.side-foot .copy{font-size:12px;color:#6B7789;line-height:1.7;}

/* ---------- 主区域 ---------- */
.shell{margin-left:var(--sidebar-w);min-height:100vh;}
.main{max-width:1280px;margin:0 auto;padding:0 40px 0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  transition:background .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out,color .2s ease-out;
}
.btn-primary{
  background:linear-gradient(135deg,#00E0C6,#00B8A3);
  color:#05201C;
  box-shadow:0 6px 20px rgba(0,224,198,0.22);
}
.btn-primary:hover{
  background:linear-gradient(135deg,#33EBD6,#00C4AD);
  box-shadow:0 0 22px rgba(0,224,198,0.45);
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:var(--glass);
  border:1px solid var(--line-strong);
  color:var(--text);
  backdrop-filter:blur(14px);
}
.btn-ghost:hover{border-color:rgba(0,224,198,0.55);color:var(--primary-hover);}
.btn-ghost:active{transform:translateY(1px);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);
  font-size:14px;font-weight:600;
}
.btn-link:hover{color:var(--primary-hover);text-decoration:underline;text-underline-offset:4px;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;
  height:23px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;line-height:1;font-weight:600;letter-spacing:.01em;
}
.badge-lava{background:rgba(255,122,47,0.12);color:var(--accent);}
.badge-spark{background:rgba(0,224,198,0.12);color:var(--primary);}
.badge-dim{background:rgba(255,255,255,0.07);color:var(--text-2);}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}

/* ---------- 通用卡片 ---------- */
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  border-radius:var(--r-md);
  box-shadow:var(--shadow);
  transition:border-color .22s ease-out,box-shadow .22s ease-out,transform .22s ease-out;
}
.glass:hover{
  border-color:rgba(0,224,198,0.32);
  box-shadow:0 0 24px rgba(0,224,198,0.18);
  transform:translateY(-2px);
}

/* ---------- Hero ---------- */
.hero{
  position:relative;margin-top:32px;border-radius:var(--r-lg);overflow:hidden;
  padding:76px 56px 68px;
  background-image:linear-gradient(135deg,rgba(10,13,20,0.88),rgba(10,13,20,0.95)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(0,224,198,0.10);border:1px solid rgba(0,224,198,0.28);
  color:var(--primary);font-size:13px;font-weight:600;
}
.hero h1{
  margin-top:22px;max-width:16em;
  font-size:clamp(30px,4.2vw,52px);font-weight:700;line-height:1.28;letter-spacing:0;
}
.hero-sub{
  margin-top:18px;max-width:34em;font-size:17px;color:var(--text-2);line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-bars{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;}
.hero-bars .tag{background:rgba(255,255,255,0.04);}

/* ---------- 指标条 ---------- */
.metrics-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  margin-top:20px;border:1px solid var(--line);border-radius:var(--r-md);
  background:rgba(255,255,255,0.06);overflow:hidden;
}
.metrics-strip .cell{
  background:var(--surface);padding:20px 24px;
}
.metrics-strip .cell b{
  display:block;font-size:15px;font-weight:600;color:var(--text);
}
.metrics-strip .cell span{font-size:13px;color:var(--text-3);line-height:1.6;}

/* ---------- 板块通用 ---------- */
.section{padding-top:88px;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;}
.section-eyebrow{
  font-size:12px;letter-spacing:.14em;color:var(--accent);font-weight:600;
}
.section-head h2{
  margin-top:10px;font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.4;
}
.section-head p{margin-top:10px;max-width:46em;color:var(--text-2);font-size:15px;}

/* ---------- 指标看板 ---------- */
.board{
  display:grid;grid-template-columns:repeat(4,1fr);
  grid-auto-rows:minmax(158px,auto);gap:20px;margin-top:34px;
}
.board-card{
  position:relative;padding:24px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  transition:border-color .22s ease-out,box-shadow .22s ease-out,transform .22s ease-out;
}
.board-card:hover{
  border-color:rgba(0,224,198,0.32);
  box-shadow:0 0 24px rgba(0,224,198,0.18);
  transform:translateY(-2px);
}
.board-card.wide{grid-column:span 2;}
.board-card .mini-badge{
  position:absolute;right:20px;top:20px;
}
.board-num{
  display:flex;align-items:baseline;gap:6px;
  font-size:clamp(32px,3.4vw,44px);font-weight:700;line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
  color:var(--text);
}
.board-num em{font-style:normal;font-size:15px;font-weight:600;color:var(--accent);letter-spacing:0;}
.board-label{margin-top:8px;font-size:14px;color:var(--text-2);}
.board-desc{margin-top:6px;font-size:13px;color:var(--text-3);}
.trendline{margin-top:18px;width:100%;height:56px;}

/* ---------- 服务矩阵 Bento ---------- */
.bento{
  display:grid;grid-template-columns:repeat(6,1fr);gap:20px;margin-top:34px;
}
.bento-card{
  position:relative;padding:26px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);
  box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px;
  transition:border-color .22s ease-out,box-shadow .22s ease-out,transform .22s ease-out;
}
.bento-card:hover{
  border-color:rgba(0,224,198,0.32);
  box-shadow:0 0 24px rgba(0,224,198,0.18);
  transform:translateY(-2px);
}
.bento-main{grid-column:span 4;grid-row:span 2;padding:0;overflow:hidden;}
.bento-main .bento-media{position:relative;aspect-ratio:16/9;overflow:hidden;}
.bento-main .bento-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out;}
.bento-card:hover .bento-media img{transform:scale(1.03);}
.bento-main .bento-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,13,20,0.10),rgba(10,13,20,0.92));
}
.bento-main .bento-body{padding:0 26px 26px;}
.bento-half{grid-column:span 2;}
.bento-row{grid-column:span 6;flex-direction:row;align-items:center;gap:18px;padding:20px 24px;}
.bento-icon{
  width:42px;height:42px;flex:0 0 42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(0,224,198,0.10);border:1px solid rgba(0,224,198,0.22);
  color:var(--primary);
}
.bento-icon.lava{background:rgba(255,122,47,0.12);border-color:rgba(255,122,47,0.26);color:var(--accent);}
.bento-icon.violet{background:rgba(108,92,231,0.14);border-color:rgba(108,92,231,0.30);color:#9C8FFF;}
.bento-icon svg{width:20px;height:20px;}
.bento-card h3{font-size:20px;font-weight:600;line-height:1.5;}
.bento-card .bento-text{font-size:14px;color:var(--text-2);}
.bento-row .bento-row-main{flex:1;min-width:0;}
.bento-row h3{font-size:17px;}
.bento-row .bento-text{font-size:13px;color:var(--text-3);}

/* ---------- 最新信息 ---------- */
.news-wrap{
  display:grid;grid-template-columns:1.35fr 1fr;gap:24px;margin-top:34px;
}
.news-lead{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  transition:border-color .22s ease-out,box-shadow .22s ease-out,transform .22s ease-out;
}
.news-lead:hover{
  border-color:rgba(0,224,198,0.32);
  box-shadow:0 0 24px rgba(0,224,198,0.18);
  transform:translateY(-2px);
}
.news-lead-media{aspect-ratio:16/9;overflow:hidden;}
.news-lead-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out;}
.news-lead:hover .news-lead-media img{transform:scale(1.03);}
.news-lead-body{padding:24px;display:flex;flex-direction:column;gap:12px;}
.news-lead-body h3{
  font-size:19px;font-weight:600;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-lead-body p{
  font-size:14px;color:var(--text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);}
.news-list{display:flex;flex-direction:column;gap:14px;}
.news-item{
  display:flex;gap:14px;align-items:center;padding:14px;
  border-radius:var(--r-md);background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);
  transition:border-color .22s ease-out,box-shadow .22s ease-out,transform .22s ease-out;
}
.news-item:hover{
  border-color:rgba(0,224,198,0.32);
  box-shadow:0 0 24px rgba(0,224,198,0.16);
  transform:translateY(-2px);
}
.news-item-thumb{
  width:112px;flex:0 0 112px;aspect-ratio:16/9;border-radius:12px;overflow:hidden;
}
.news-item-thumb img{width:100%;height:100%;object-fit:cover;}
.news-item-body{flex:1;min-width:0;}
.news-item-body h4{
  font-size:16px;font-weight:600;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-item-body p{
  margin-top:6px;font-size:13px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-item-foot{margin-top:8px;display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3);}
.news-empty{
  margin-top:34px;padding:48px 24px;border-radius:var(--r-md);
  background:var(--glass);border:1px dashed var(--line-strong);
  display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
}
.news-empty svg{width:34px;height:34px;color:var(--text-3);}
.news-empty p{color:var(--text-2);font-size:15px;}

/* ---------- 结果对比 ---------- */
.compare{
  margin-top:34px;display:grid;grid-template-columns:1fr 1px 1fr;gap:0;
  border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);
  background:var(--glass);backdrop-filter:blur(14px);box-shadow:var(--shadow);
}
.compare-col{padding:34px 32px;}
.compare-col h3{font-size:19px;font-weight:600;}
.compare-col .compare-note{margin-top:6px;font-size:13px;color:var(--text-3);}
.compare-divider{background:linear-gradient(180deg,rgba(0,224,198,0.05),rgba(0,224,198,0.6),rgba(0,224,198,0.05));box-shadow:0 0 18px rgba(0,224,198,0.35);}
.compare-list{margin-top:22px;display:flex;flex-direction:column;gap:16px;}
.compare-row{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--text-2);}
.compare-row .mark{
  width:20px;height:20px;flex:0 0 20px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:12px;
}
.mark.ok{background:rgba(0,224,198,0.16);color:var(--primary);}
.mark.no{background:rgba(255,255,255,0.07);color:var(--text-3);}
.compare-bar{
  height:6px;border-radius:99px;background:rgba(255,255,255,0.07);overflow:hidden;margin-top:8px;
}
.compare-bar i{display:block;height:100%;border-radius:99px;}
.bar-ok{background:linear-gradient(90deg,#00E0C6,#00B8A3);box-shadow:0 0 14px rgba(0,224,198,0.5);}
.bar-dim{background:rgba(255,255,255,0.18);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:34px auto 0;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  border-radius:var(--r-md);background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);overflow:hidden;
  transition:border-color .22s ease-out,box-shadow .22s ease-out;
}
.faq-item[open]{border-color:rgba(0,224,198,0.32);box-shadow:0 0 24px rgba(0,224,198,0.14);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:58px;padding:16px 22px;font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .arrow{
  width:22px;height:22px;flex:0 0 22px;color:var(--text-3);
  transition:transform .22s ease-out,color .22s ease-out;
}
.faq-item[open] summary{color:var(--primary);}
.faq-item[open] summary .arrow{transform:rotate(180deg);color:var(--primary);}
.faq-item .faq-answer{
  padding:0 22px 20px 22px;font-size:15px;color:var(--text-2);
  border-left:3px solid transparent;margin-left:0;
}
.faq-item[open] .faq-answer{border-left-color:var(--primary);}

/* ---------- 转化表单 ---------- */
.cta-wrap{
  margin-top:34px;display:grid;grid-template-columns:1.25fr 1fr;gap:24px;
}
.form-card{
  padding:32px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:24px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:span 2;}
.field label{font-size:13px;color:var(--text-2);}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--r-btn);
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.10);
  font-size:15px;color:var(--text);
  transition:border-color .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.field textarea{min-height:118px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:#5C6878;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(0,224,198,0.16);
  background:rgba(255,255,255,0.06);
}
.field .hint{font-size:12px;color:var(--text-3);}
.form-actions{grid-column:span 2;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.trust-panel{
  padding:32px;border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(0,224,198,0.10),rgba(20,28,42,0.75) 55%,rgba(108,92,231,0.14));
  border:1px solid var(--line);display:flex;flex-direction:column;gap:22px;
}
.trust-item{display:flex;flex-direction:column;gap:4px;}
.trust-item b{
  font-size:30px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:.02em;color:var(--text);
}
.trust-item b em{font-style:normal;font-size:14px;color:var(--accent);margin-left:4px;}
.trust-item span{font-size:13px;color:var(--text-2);}

/* ---------- CTA 条 ---------- */
.cta-bar{
  margin-top:88px;padding:44px 40px;border-radius:var(--r-lg);
  background-image:linear-gradient(135deg,rgba(10,13,20,0.90),rgba(10,13,20,0.96)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  border:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-bar h2{font-size:clamp(22px,2.2vw,28px);font-weight:700;}
.cta-bar p{margin-top:8px;color:var(--text-2);font-size:15px;}

/* ---------- 页脚 ---------- */
.footer{
  margin-top:88px;border-top:1px solid rgba(255,255,255,0.06);
  background:var(--surface);
}
.footer-inner{max-width:1280px;margin:0 auto;padding:56px 40px 0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;
}
.footer-brand{display:flex;align-items:center;gap:10px;}
.footer-brand .brand-text{font-size:15px;}
.footer p{font-size:13px;color:var(--text-3);line-height:1.9;}
.footer h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px;}
.footer ul{display:flex;flex-direction:column;gap:10px;}
.footer ul a{font-size:13px;color:var(--text-2);transition:color .2s ease-out;}
.footer ul a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:40px;border-top:1px solid rgba(255,255,255,0.06);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12px;color:#6B7789;
}
.footer-bottom a{color:#6B7789;}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 移动端顶部栏 / 抽屉 ---------- */
.topbar{
  display:none;position:fixed;left:0;right:0;top:0;height:56px;z-index:70;
  background:rgba(15,21,32,0.94);backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,0.06);
  align-items:center;gap:12px;padding:0 14px;
}
.topbar .icon-btn{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border-radius:10px;color:var(--text-2);
}
.topbar .icon-btn:hover{background:rgba(255,255,255,0.05);color:var(--text);}
.topbar .topbar-title{
  flex:1;text-align:center;font-size:14px;font-weight:700;color:var(--text);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.topbar .topbar-cta{
  height:36px;padding:0 14px;border-radius:10px;display:inline-flex;align-items:center;
  background:linear-gradient(135deg,#00E0C6,#00B8A3);color:#05201C;font-size:13px;font-weight:700;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,0.6);opacity:0;pointer-events:none;
  transition:opacity .22s ease-out;z-index:65;
}
.drawer-mask.show{opacity:1;pointer-events:auto;}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .main{padding:0 32px;}
  .footer-inner{padding:52px 32px 0;}
}
@media (max-width:1023px){
  :root{--sidebar-w:72px;}
  .brand-text,.nav-title,.nav-item span,.side-foot .copy,.side-foot .side-links{display:none;}
  .nav-item{justify-content:center;padding:0;}
  .sidebar{padding:0 10px 16px;align-items:center;}
  .brand{justify-content:center;}
  .nav-group{width:100%;align-items:center;}
  .nav-item{width:44px;}
  .bento-main{grid-column:span 6;grid-row:auto;}
  .bento-half{grid-column:span 3;}
  .bento-row{grid-column:span 6;}
  .board{grid-template-columns:repeat(2,1fr);}
  .board-card.wide{grid-column:span 2;}
  .news-wrap{grid-template-columns:1fr;}
  .cta-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .compare{padding:0;}
}
@media (max-width:767px){
  :root{--sidebar-w:0px;}
  .topbar{display:flex;}
  .shell{margin-left:0;padding-top:56px;}
  .sidebar{
    width:78vw;max-width:320px;--sidebar-w:320px;
    transform:translateX(-100%);
    transition:transform .24s ease-out;
    background:rgba(15,21,32,0.97);backdrop-filter:blur(14px);
    padding:0 16px 18px;align-items:stretch;
  }
  .sidebar.open{transform:translateX(0);}
  .brand-text,.nav-title,.nav-item span,.side-foot .copy,.side-foot .side-links{display:block;}
  .nav-item{justify-content:flex-start;padding:0 12px;width:auto;}
  .main{padding:0 20px;}
  .hero{padding:44px 22px 40px;margin-top:20px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .metrics-strip{grid-template-columns:1fr 1fr;}
  .board{grid-template-columns:1fr;gap:16px;}
  .board-card.wide{grid-column:span 1;}
  .bento{grid-template-columns:1fr;gap:16px;}
  .bento-main,.bento-half,.bento-row{grid-column:span 1;}
  .bento-row{flex-direction:column;align-items:flex-start;gap:12px;}
  .section{padding-top:56px;}
  .compare{grid-template-columns:1fr;gap:0;}
  .compare-divider{height:1px;width:100%;background:linear-gradient(90deg,rgba(0,224,198,0.05),rgba(0,224,198,0.6),rgba(0,224,198,0.05));}
  .compare-col{padding:26px 20px;}
  .form-grid{grid-template-columns:1fr;}
  .field.full,.form-actions{grid-column:span 1;}
  .form-actions{flex-direction:column;align-items:stretch;}
  .form-actions .btn{width:100%;}
  .form-card,.trust-panel{padding:24px 20px;}
  .cta-bar{padding:30px 22px;margin-top:56px;flex-direction:column;align-items:flex-start;}
  .footer-inner{padding:44px 20px 0;}
  .footer-grid{grid-template-columns:1fr;}
  .footer{margin-top:56px;}
  .news-item-thumb{width:88px;flex:0 0 88px;}
  .topbar-title{font-size:13px;}
}
@media (max-width:520px){
  .metrics-strip{grid-template-columns:1fr;}
  .news-item{flex-direction:column;align-items:flex-start;}
  .news-item-thumb{width:100%;flex:0 0 auto;}
  .hero h1{font-size:28px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .glass:hover,.board-card:hover,.bento-card:hover,.news-lead:hover,.news-item:hover{transform:none;}
  .bento-card:hover .bento-media img,.news-lead:hover .news-lead-media img{transform:none;}
}

/* roulang page: category1 */
:root{
  --bg:#0A0D14;
  --surface:#0F1520;
  --card:#141C2A;
  --primary:#00E0C6;
  --primary-hover:#33EBD6;
  --primary-active:#00B8A3;
  --accent:#FF7A2F;
  --accent-hover:#FF9552;
  --violet:#6C5CE7;
  --text:#E9EFF7;
  --text-2:#9BA8BE;
  --text-3:#6B7789;
  --ok:#3DD68C;
  --warn:#FFB020;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --glass:rgba(255,255,255,.045);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-btn:11px;
  --shadow:0 8px 30px rgba(0,0,0,.45);
  --sidebar:248px;
  --pad:40px;
  --section-y:96px;
}
@media (min-width:1536px){ :root{ --sidebar:264px; } }

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.drawer-open{overflow:hidden;}
img{max-width:100%;display:block;border-radius:var(--r-sm);}
a{color:inherit;text-decoration:none;transition:color .2s ease-out,border-color .2s ease-out,background-color .2s ease-out;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;line-height:1.3;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(0,224,198,.28);color:#fff;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(0,224,198,.22);border-radius:6px;}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 var(--pad);}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ============ 侧栏 ============ */
.sidebar{
  position:fixed;left:0;top:0;height:100vh;width:var(--sidebar);
  background:var(--surface);
  border-right:1px solid rgba(255,255,255,.06);
  display:flex;flex-direction:column;
  z-index:60;
  padding-bottom:16px;
}
.sidebar::after{
  content:"";position:absolute;top:-80px;left:-60px;width:220px;height:220px;
  background:radial-gradient(circle,rgba(0,224,198,.16),transparent 68%);pointer-events:none;
}
.brand{
  height:72px;display:flex;align-items:center;gap:10px;padding:0 18px;
  border-bottom:1px solid rgba(255,255,255,.06);flex:none;position:relative;z-index:1;
}
.brand-mark{
  width:12px;height:12px;flex:none;border-radius:3px;
  background:linear-gradient(135deg,var(--primary),var(--violet));
  box-shadow:0 0 12px rgba(0,224,198,.7);
  transform:rotate(45deg);
}
.brand-text{font-size:15px;font-weight:700;color:var(--text);letter-spacing:.01em;}
.nav-wrap{flex:1;overflow-y:auto;padding:18px 12px;}
.nav-group{display:flex;flex-direction:column;gap:4px;}
.nav-title{
  font-size:12px;color:var(--text-3);padding:0 10px 10px;letter-spacing:.08em;
}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:10px;
  color:var(--text-2);font-size:14px;font-weight:500;
  transition:background-color .2s ease-out,color .2s ease-out;
}
.nav-item svg{width:18px;height:18px;flex:none;}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text);}
.nav-item.active{background:rgba(0,224,198,.10);color:var(--primary);}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;
  background:var(--primary);box-shadow:0 0 12px rgba(0,224,198,.7);
}
.sidebar-divider{height:1px;background:rgba(255,255,255,.06);margin:14px 18px;}
.sidebar-foot{padding:0 18px;font-size:12px;color:var(--text-3);line-height:2;}
.sidebar-foot a{display:block;color:var(--text-2);font-size:13px;padding:3px 0;}
.sidebar-foot a:hover{color:var(--primary);}

/* ============ 移动顶栏与抽屉 ============ */
.mobile-topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:80;
  background:rgba(15,21,32,.92);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 14px;
}
.hamburger{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  background:transparent;border:none;border-radius:10px;cursor:pointer;color:var(--text);
}
.hamburger:hover{background:rgba(255,255,255,.06);}
.hamburger svg{width:22px;height:22px;}
.topbar-brand{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:700;}
.btn-mini{
  height:34px;padding:0 14px;border-radius:10px;font-size:13px;font-weight:700;
  background:linear-gradient(135deg,var(--primary),var(--primary-active));color:#05201C;
  display:inline-flex;align-items:center;
}
.backdrop{
  position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;visibility:hidden;
  transition:opacity .22s ease-out,visibility .22s ease-out;z-index:90;
}
.backdrop.show{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:78vw;max-width:320px;z-index:100;
  background:rgba(15,21,32,.96);backdrop-filter:blur(14px);
  border-right:1px solid var(--line);
  transform:translateX(-102%);transition:transform .24s ease-out;
  display:flex;flex-direction:column;padding-bottom:18px;overflow-y:auto;
}
.drawer.show{transform:translateX(0);}

/* ============ 内容区 ============ */
.content{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column;}
.main{flex:1;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-active));
  color:#05201C;box-shadow:0 6px 18px rgba(0,224,198,.22);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 22px rgba(0,224,198,.45);}
.btn-primary:active{transform:translateY(1px);}
.btn-glass{
  background:var(--glass);border-color:var(--line-strong);color:var(--text);
  backdrop-filter:blur(14px);
}
.btn-glass:hover{border-color:rgba(0,224,198,.32);color:var(--primary);}
.btn-glass:active{transform:translateY(1px);}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;
}
.badge-accent{background:rgba(255,122,47,.12);color:var(--accent);}
.badge-primary{background:rgba(0,224,198,.12);color:var(--primary);}
.badge-soft{background:rgba(255,255,255,.06);color:var(--text-2);}

/* ============ Hero 窄条 ============ */
.hero{
  position:relative;overflow:hidden;
  min-height:clamp(280px,32vw,320px);
  display:flex;align-items:center;
  background-image:linear-gradient(135deg,rgba(10,13,20,.88),rgba(10,13,20,.95)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;right:-60px;bottom:-120px;width:340px;height:340px;
  background:radial-gradient(circle,rgba(108,92,231,.28),transparent 70%);pointer-events:none;
}
.hero-inner{position:relative;z-index:1;padding-top:48px;padding-bottom:48px;}
.breadcrumb{font-size:13px;color:var(--text-3);margin-bottom:16px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb span{color:var(--text-3);}
.breadcrumb .current{color:var(--text-2);}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--primary);
  letter-spacing:.04em;margin-bottom:14px;
}
.hero-kicker i{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(0,224,198,.8);display:block;}
.hero h1{font-size:clamp(30px,4.2vw,52px);font-weight:700;margin:12px 0 14px;}
.hero-sub{font-size:17px;color:var(--text);font-weight:600;}
.hero-desc{font-size:15px;color:var(--text-2);max-width:720px;margin-top:10px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}

/* ============ 板块 ============ */
.section{padding:var(--section-y) 0;}
.section-alt{background:linear-gradient(180deg,rgba(255,255,255,.016),rgba(255,255,255,0));border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:15px;}
.eyebrow{
  font-size:12px;letter-spacing:.12em;color:var(--accent);font-weight:700;
  display:block;margin-bottom:12px;
}

/* ============ 指标卡 ============ */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.metric-card{
  position:relative;
  background:var(--glass);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow);
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.metric-card:hover{transform:translateY(-2px);border-color:rgba(0,224,198,.32);box-shadow:var(--shadow),0 0 24px rgba(0,224,198,.18);}
.metric-card .m-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;}
.metric-label{font-size:13px;color:var(--text-2);}
.metric-value{font-size:40px;font-weight:700;line-height:1.1;margin:16px 0 6px;color:var(--text);}
.metric-value em{font-size:14px;font-style:normal;color:var(--text-2);margin-left:6px;font-weight:600;}
.metric-note{font-size:13px;color:var(--text-3);}
.mini-chart{margin-top:18px;height:38px;width:100%;display:block;}

/* ============ 能力条 ============ */
.bars{display:grid;gap:20px;}
.bar-row{
  background:var(--glass);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 24px;
  transition:border-color .22s ease-out;
}
.bar-row:hover{border-color:rgba(0,224,198,.32);}
.bar-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:12px;}
.bar-head strong{font-size:16px;font-weight:600;}
.bar-head span{font-size:14px;color:var(--primary);font-weight:700;}
.bar-track{height:8px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden;}
.bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary-active),var(--primary));box-shadow:0 0 14px rgba(0,224,198,.4);}
.bar-fill.accent{background:linear-gradient(90deg,#E4651F,var(--accent));box-shadow:0 0 14px rgba(255,122,47,.35);}
.bar-desc{font-size:13px;color:var(--text-3);margin-top:10px;}

/* ============ 场景图文 ============ */
.scenes{display:grid;gap:32px;}
.scene{
  display:grid;grid-template-columns:1.05fr 1fr;gap:36px;align-items:center;
  background:var(--glass);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.scene:hover{transform:translateY(-2px);border-color:rgba(0,224,198,.32);box-shadow:var(--shadow),0 0 24px rgba(0,224,198,.18);}
.scene.reverse .scene-media{order:2;}
.scene-media{overflow:hidden;border-radius:var(--r-sm);aspect-ratio:16/9;background:var(--card);}
.scene-media img{width:100%;height:100%;object-fit:cover;border-radius:var(--r-sm);transition:transform .24s ease-out;}
.scene:hover .scene-media img{transform:scale(1.03);}
.scene-body h3{font-size:21px;font-weight:600;margin:14px 0 12px;}
.scene-body p{color:var(--text-2);font-size:15px;}
.point-list{margin-top:18px;display:grid;gap:10px;}
.point-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-2);}
.point-list li::before{
  content:"";width:6px;height:6px;margin-top:9px;flex:none;border-radius:2px;
  background:var(--primary);box-shadow:0 0 8px rgba(0,224,198,.7);
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;display:grid;gap:12px;}
.faq-item{
  background:var(--glass);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .22s ease-out;
}
.faq-item:hover{border-color:rgba(0,224,198,.24);}
.faq-item.open{border-color:rgba(0,224,198,.32);}
.faq-q{
  position:relative;width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 20px 16px 24px;background:transparent;border:none;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-q:hover{color:var(--primary);}
.faq-item.open .faq-q::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;
  background:var(--primary);box-shadow:0 0 12px rgba(0,224,198,.7);
}
.faq-arrow{width:18px;height:18px;flex:none;transition:transform .22s ease-out;color:var(--text-3);}
.faq-item.open .faq-arrow{transform:rotate(180deg);color:var(--primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease-out;}
.faq-a-inner{padding:0 24px 20px 24px;color:var(--text-2);font-size:15px;}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--r-lg);
  background-image:linear-gradient(135deg,rgba(10,13,20,.9),rgba(10,13,20,.96)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  padding:48px;
  box-shadow:var(--shadow);
}
.cta-band::after{
  content:"";position:absolute;left:-80px;top:-90px;width:280px;height:280px;
  background:radial-gradient(circle,rgba(0,224,198,.2),transparent 68%);pointer-events:none;
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.25fr 1fr;gap:40px;align-items:center;}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px;}
.cta-inner p{color:var(--text-2);font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px;}
.cta-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.cta-stat{
  background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px;text-align:center;
}
.cta-stat b{display:block;font-size:24px;font-weight:700;color:var(--primary);}
.cta-stat span{font-size:12px;color:var(--text-2);}

/* ============ 页脚 ============ */
.footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.014),rgba(255,255,255,0));
  padding:56px 0 24px;
}
.footer-inner{width:100%;max-width:1280px;margin:0 auto;padding:0 var(--pad);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;}
.footer-brand .brand-mark{width:11px;height:11px;border-radius:3px;background:linear-gradient(135deg,var(--primary),var(--violet));transform:rotate(45deg);box-shadow:0 0 12px rgba(0,224,198,.7);display:block;}
.footer-brand .brand-text{font-size:15px;font-weight:700;}
.footer p{color:var(--text-2);font-size:14px;}
.footer h4{font-size:14px;margin-bottom:16px;color:var(--text);}
.footer ul{display:grid;gap:10px;}
.footer ul a{font-size:14px;color:var(--text-2);}
.footer ul a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12px;color:var(--text-3);
}

/* ============ 平板 72px 图标栏 ============ */
@media (max-width:1023px){
  :root{--sidebar:72px;--pad:28px;--section-y:76px;}
  .brand-text,.nav-title,.nav-item span,.sidebar-foot{display:none;}
  .brand{justify-content:center;padding:0;}
  .nav-wrap{padding:18px 10px;}
  .nav-item{justify-content:center;padding:0;}
  .nav-item span{
    display:block;position:absolute;left:66px;top:50%;transform:translateY(-50%);
    background:#141C2A;border:1px solid var(--line);color:var(--text);
    padding:6px 12px;border-radius:8px;font-size:13px;white-space:nowrap;
    opacity:0;visibility:hidden;transition:opacity .18s ease-out;z-index:70;pointer-events:none;
  }
  .nav-item:hover span,.nav-item:focus-visible span{opacity:1;visibility:visible;}
  .scene{grid-template-columns:1fr;gap:24px;}
  .scene.reverse .scene-media{order:0;}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}

/* ============ 手机 ============ */
@media (max-width:767px){
  :root{--pad:20px;--section-y:56px;}
  .sidebar{display:none;}
  .mobile-topbar{display:flex;}
  .content{margin-left:0;padding-top:56px;}
  .metric-grid{grid-template-columns:1fr;}
  .metric-value{font-size:34px;}
  .hero{min-height:auto;}
  .hero-inner{padding-top:36px;padding-bottom:40px;}
  .scene{padding:20px;}
  .cta-band{padding:28px;}
  .cta-stats{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .btn{width:100%;}
  .hero-actions .btn,.cta-actions .btn{width:100%;}
}
@media (max-width:520px){
  .hero-sub{font-size:15px;}
  .bar-row{padding:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
  .metric-card:hover,.scene:hover{transform:none;}
  .scene:hover .scene-media img{transform:none;}
}

/* roulang page: article */
:root{
  --bg:#0A0D14;
  --surface:#0F1520;
  --card:#141C2A;
  --primary:#00E0C6;
  --primary-hover:#33EBD6;
  --primary-active:#00B8A3;
  --accent:#FF7A2F;
  --accent-hover:#FF9552;
  --violet:#6C5CE7;
  --text:#E9EFF7;
  --text-2:#9BA8BE;
  --text-3:#6B7789;
  --success:#3DD68C;
  --warn:#FFB020;
  --danger:#FF5A5F;
  --border:rgba(255,255,255,.08);
  --border-strong:rgba(255,255,255,.18);
  --glass:rgba(255,255,255,.045);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-xs:10px;
  --r-pill:999px;
  --shadow:0 8px 30px rgba(0,0,0,.45);
  --sidebar-w:248px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::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:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;letter-spacing:0;color:var(--text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(0,224,198,.18);border-radius:8px}
.skip-link{position:absolute;left:-9999px;top:0;padding:10px 16px;background:var(--card);border:1px solid var(--border);border-radius:var(--r-xs);z-index:300}
.skip-link:focus{left:16px;top:16px}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px}

/* ---------- 侧栏 App Shell ---------- */
.app-shell{display:flex;min-height:100vh}
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
  background:var(--surface);border-right:1px solid var(--border);
  display:flex;flex-direction:column;z-index:80;
  transition:transform .24s var(--ease);
}
.brand{
  display:flex;align-items:center;gap:12px;height:72px;padding:0 20px;
  border-bottom:1px solid var(--border);flex:none;
}
.brand-mark{
  position:relative;width:26px;height:26px;flex:none;border-radius:8px;
  background:linear-gradient(135deg,var(--primary),var(--violet));
  box-shadow:0 0 18px rgba(0,224,198,.45);
}
.brand-mark::after{content:"";position:absolute;inset:7px;border-radius:4px;background:rgba(10,13,20,.85)}
.brand-text{font-weight:700;font-size:15.5px;line-height:1.3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sidebar-scroll{flex:1;overflow-y:auto;padding:18px 14px 8px}
.nav-group{display:flex;flex-direction:column;gap:4px}
.nav-title{font-size:12px;letter-spacing:.08em;color:var(--text-3);padding:6px 12px 8px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:44px;padding:10px 12px;border-radius:var(--r-xs);
  color:var(--text-2);font-size:14.5px;line-height:1.4;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-item svg{width:18px;height:18px;flex:none}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text)}
.nav-item.active{background:rgba(0,224,198,.10);color:var(--primary)}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
  box-shadow:0 0 12px rgba(0,224,198,.7);
}
.sidebar-foot{
  flex:none;border-top:1px solid var(--border);padding:14px 18px 18px;
  display:flex;flex-direction:column;gap:6px;font-size:12px;color:var(--text-3);
}
.sidebar-foot a{font-size:12px;color:var(--text-3);transition:color .2s var(--ease)}
.sidebar-foot a:hover{color:var(--primary)}

/* ---------- 主区 ---------- */
.main-area{margin-left:var(--sidebar-w);flex:1;min-width:0;display:flex;flex-direction:column}
.page-main{padding:28px 0 88px}

/* ---------- 移动端顶栏 ---------- */
.mobile-bar{display:none}
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;transition:opacity .22s var(--ease);z-index:70}
.drawer-mask.show{opacity:1}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:14px}
.breadcrumb a{color:var(--text-3);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(255,255,255,.22)}
.crumb-current{color:var(--text-2);max-width:24ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:44px;align-items:start}
.article-main{max-width:780px;width:100%}
.article-head{padding:18px 0 6px;border-bottom:1px solid var(--border)}
.article-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12.5px;line-height:1;white-space:nowrap;
}
.badge-ember{background:rgba(255,122,47,.12);color:var(--accent)}
.badge-brand{background:rgba(0,224,198,.10);color:var(--primary)}
.article-title{
  font-size:clamp(28px,3.6vw,46px);font-weight:700;line-height:1.3;margin:0;
  letter-spacing:0;
}
.article-meta{
  display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;
  margin:20px 0 22px;font-size:13.5px;color:var(--text-3);
}
.meta-item{display:inline-flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums}
.meta-item svg{width:15px;height:15px;opacity:.75}
.article-foot{display:flex;flex-wrap:wrap;gap:14px;margin-top:52px;padding-top:28px;border-top:1px solid var(--border)}

/* ---------- 正文排版 ---------- */
.prose{max-width:760px;font-size:16.5px;line-height:1.9;color:#DCE5F2;padding-top:8px}
.prose p{margin:0 0 1.25em}
.prose h2{
  position:relative;font-size:clamp(22px,2.2vw,28px);font-weight:700;line-height:1.42;
  margin:48px 0 18px;padding-left:14px;color:var(--text);
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:3px;border-radius:3px;
  background:var(--primary);box-shadow:0 0 12px rgba(0,224,198,.6);
}
.prose h3{font-size:20px;font-weight:600;margin:32px 0 14px;color:var(--text)}
.prose h4{font-size:17px;font-weight:600;margin:24px 0 12px;color:var(--text)}
.prose ul,.prose ol{margin:0 0 1.25em;padding-left:1.35em}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin:.5em 0}
.prose li::marker{color:var(--primary)}
.prose blockquote{
  margin:28px 0;padding:18px 22px;border-left:3px solid var(--primary);
  border-radius:0 var(--r-md) var(--r-md) 0;background:var(--glass);
  backdrop-filter:blur(14px);color:var(--text-2);
}
.prose img{border-radius:var(--r-sm);margin:28px auto;transition:transform .24s var(--ease)}
.prose img:hover{transform:scale(1.03)}
.prose figure{margin:28px 0}
.prose figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.prose a{color:var(--primary);border-bottom:1px solid rgba(0,224,198,.4);transition:border-color .2s var(--ease)}
.prose a:hover{border-color:var(--primary)}
.prose strong{color:var(--text)}
.prose hr{border:0;border-top:1px solid var(--border);margin:40px 0}
.prose table{
  width:100%;border-collapse:separate;border-spacing:0;margin:28px 0;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-md);overflow:hidden;font-size:15px;line-height:1.7;
}
.prose th{background:rgba(255,255,255,.04);color:var(--text);text-align:left;font-weight:600}
.prose th,.prose td{padding:14px 18px;border-bottom:1px solid var(--border);vertical-align:top}
.prose tr:last-child td{border-bottom:0}
.prose tbody tr:hover{background:rgba(255,255,255,.025)}
.prose code{background:rgba(255,255,255,.06);padding:2px 6px;border-radius:6px;font-size:.92em}
.prose pre{background:#0B1018;border:1px solid var(--border);border-radius:var(--r-md);padding:18px;overflow:auto;margin:24px 0}
.prose pre code{background:none;padding:0}

/* ---------- 侧栏推荐卡（≥1280） ---------- */
.article-aside{display:none}
.aside-card{
  background:var(--glass);border:1px solid var(--border);border-radius:var(--r-md);
  padding:22px;backdrop-filter:blur(14px);margin-bottom:20px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.aside-card:hover{border-color:rgba(0,224,198,.32);box-shadow:0 0 24px rgba(0,224,198,.18)}
.aside-title{font-size:15px;font-weight:700;margin-bottom:14px}
.aside-list{display:flex;flex-direction:column;gap:12px}
.aside-list li{display:flex;gap:10px;font-size:13.5px;line-height:1.7;color:var(--text-2)}
.dot-brand{width:6px;height:6px;border-radius:50%;background:var(--primary);flex:none;margin-top:9px;box-shadow:0 0 10px rgba(0,224,198,.8)}
.aside-link{
  display:flex;align-items:center;justify-content:space-between;min-height:44px;
  padding:10px 12px;border-radius:var(--r-xs);font-size:14px;color:var(--text-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.aside-link::after{content:"›";color:var(--text-3);font-size:16px}
.aside-link:hover{background:rgba(255,255,255,.05);color:var(--primary)}
.aside-link:hover::after{color:var(--primary)}

/* ---------- 相关推荐 ---------- */
.related{margin-top:72px;padding-top:44px;border-top:1px solid var(--border)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.sec-head h2{font-size:clamp(22px,2.2vw,28px);font-weight:700}
.sec-more{font-size:14px;color:var(--text-2);transition:color .2s var(--ease)}
.sec-more:hover{color:var(--primary)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:rgba(0,224,198,.32);box-shadow:0 0 24px rgba(0,224,198,.18)}
.card-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--surface)}
.card-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .24s var(--ease)}
.card:hover .card-thumb img{transform:scale(1.03)}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:16.5px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-desc{
  font-size:13.5px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{display:flex;align-items:center;gap:8px;margin-top:auto;font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}
.card-meta .dot{color:rgba(255,255,255,.2)}

/* ---------- CTA 条 ---------- */
.cta-band{margin-top:64px}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  padding:32px 34px;border-radius:var(--r-lg);
  background:
    radial-gradient(600px 220px at 88% -10%, rgba(108,92,231,.22), transparent 70%),
    linear-gradient(135deg, rgba(0,224,198,.10), rgba(20,28,42,.9));
  border:1px solid var(--border-strong);
  box-shadow:var(--shadow);
}
.cta-title{font-size:clamp(20px,2vw,26px);font-weight:700;margin-bottom:8px}
.cta-desc{font-size:14px;color:var(--text-2);max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;line-height:1;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .12s var(--ease),filter .2s var(--ease);
}
.btn-primary{background:linear-gradient(135deg,#00E0C6,#00B8A3);color:#05201C;box-shadow:0 6px 20px rgba(0,224,198,.25)}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 22px rgba(0,224,198,.45)}
.btn-primary:active{transform:translateY(1px);background:var(--primary-active)}
.btn-ghost{background:var(--glass);border:1px solid var(--border-strong);color:var(--text);backdrop-filter:blur(14px)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:36px;padding:0 14px;font-size:13.5px;border-radius:var(--r-xs)}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:640px;margin:36px auto 0;padding:48px 32px;text-align:center;
  background:var(--glass);border:1px solid var(--border);border-radius:var(--r-lg);
  backdrop-filter:blur(14px);
}
.empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:var(--r-md);
  display:flex;align-items:center;justify-content:center;
  background:rgba(0,224,198,.10);color:var(--primary);
}
.empty-icon svg{width:26px;height:26px}
.empty-title{font-size:20px;font-weight:700;margin-bottom:10px}
.empty-desc{font-size:14px;color:var(--text-2);margin-bottom:22px}

/* ---------- 页脚 ---------- */
.footer{border-top:1px solid var(--border);background:var(--surface);margin-top:auto}
.footer-inner{max-width:1280px;margin:0 auto;padding:56px 40px 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px}
.footer-brand .brand-mark{width:22px;height:22px;border-radius:7px}
.footer-brand .brand-mark::after{inset:6px}
.footer p{font-size:13.5px;color:var(--text-2);line-height:1.8;max-width:38ch}
.footer h4{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--text)}
.footer ul{display:flex;flex-direction:column;gap:10px}
.footer li a{font-size:13.5px;color:var(--text-2);transition:color .2s var(--ease)}
.footer li a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:44px;padding-top:20px;border-top:1px solid var(--border);
  font-size:12.5px;color:var(--text-3);
}

/* ---------- 平板 768–1023 ---------- */
@media (min-width:768px) and (max-width:1023px){
  :root{--sidebar-w:72px}
  .brand{justify-content:center;padding:0}
  .brand-text{display:none}
  .sidebar-scroll{padding:18px 10px 8px}
  .nav-title{display:none}
  .nav-item{justify-content:center;padding:10px 0}
  .nav-item span{
    position:absolute;left:calc(100% + 10px);top:50%;transform:translateY(-50%) scale(.96);
    background:var(--card);border:1px solid var(--border-strong);color:var(--text);
    padding:6px 10px;border-radius:var(--r-xs);font-size:13px;white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity .18s var(--ease),transform .18s var(--ease);
    box-shadow:var(--shadow);
  }
  .nav-item:hover span,.nav-item:focus-visible span{opacity:1;transform:translateY(-50%) scale(1)}
  .sidebar-foot{display:none}
  .container{padding:0 28px}
  .footer-inner{padding:48px 28px 22px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ---------- 移动端 <768 ---------- */
@media (max-width:767px){
  .mobile-bar{
    position:fixed;top:0;left:0;right:0;height:56px;z-index:90;
    display:flex;align-items:center;gap:10px;padding:0 12px;
    background:rgba(15,21,32,.96);border-bottom:1px solid var(--border);
    backdrop-filter:blur(14px);
  }
  .icon-btn{
    width:44px;height:44px;display:flex;align-items:center;justify-content:center;
    border-radius:var(--r-xs);color:var(--text-2);transition:background .2s var(--ease),color .2s var(--ease);
  }
  .icon-btn:hover{background:rgba(255,255,255,.05);color:var(--text)}
  .icon-btn svg{width:22px;height:22px}
  .mobile-brand{
    display:flex;align-items:center;gap:8px;font-weight:700;font-size:14.5px;
    min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  }
  .mobile-brand .brand-dot{
    width:16px;height:16px;border-radius:5px;flex:none;
    background:linear-gradient(135deg,var(--primary),var(--violet));
    box-shadow:0 0 12px rgba(0,224,198,.5);
  }
  .mobile-bar .btn{margin-left:auto}
  .sidebar{
    width:78vw;max-width:320px;transform:translateX(-102%);
    background:rgba(15,21,32,.98);backdrop-filter:blur(16px);
  }
  .sidebar.open{transform:translateX(0)}
  .main-area{margin-left:0;padding-top:56px}
  .container{padding:0 20px}
  .page-main{padding:18px 0 64px}
  .crumb-current{max-width:14ch}
  .article-meta{gap:8px 14px}
  .related{margin-top:56px;padding-top:36px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .cta-inner{padding:26px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .article-foot .btn{flex:1 1 100%}
  .prose{font-size:16px}
  .prose table{font-size:14px}
  .prose th,.prose td{padding:12px 14px}
  .footer-inner{padding:44px 20px 22px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-bottom{flex-direction:column}
}

@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,780px) 300px;justify-content:center;gap:56px}
  .article-aside{display:block;position:sticky;top:32px;align-self:start}
}
@media (min-width:1536px){
  :root{--sidebar-w:264px}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .card:hover{transform:none}
  .card:hover .card-thumb img{transform:none}
}

/* roulang page: category2 */
:root{
  --bg:#0A0D14;
  --surface:#0F1520;
  --card:#141C2A;
  --primary:#00E0C6;
  --primary-hover:#33EBD6;
  --primary-active:#00B8A3;
  --accent:#FF7A2F;
  --accent-hover:#FF9552;
  --violet:#6C5CE7;
  --text:#E9EFF7;
  --text-2:#9BA8BE;
  --text-3:#6B7789;
  --success:#3DD68C;
  --warn:#FFB020;
  --danger:#FF5A5F;
  --line:rgba(255,255,255,0.08);
  --line-strong:rgba(255,255,255,0.18);
  --glass:rgba(255,255,255,0.045);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:10px;
  --shadow:0 8px 30px rgba(0,0,0,0.45);
  --sidebar-w:248px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body.scroll-lock{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
input,select,textarea{background:transparent;border:0;outline:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;line-height:1.35}
p{margin:0}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:3px;
  box-shadow:0 0 0 4px rgba(0,224,198,0.28);
  border-radius:8px;
}
::selection{background:rgba(0,224,198,0.28);color:#fff}

/* ============ 侧栏导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:var(--surface);
  border-right:1px solid rgba(255,255,255,0.06);
  display:flex;flex-direction:column;
  padding:0 16px 22px;
  overflow-y:auto;overflow-x:hidden;
  z-index:60;
  scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.14) transparent;
}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:99px}
.brand{
  height:72px;display:flex;align-items:center;gap:10px;flex:none;
  padding:0 6px;
}
.brand-mark{
  width:26px;height:26px;flex:none;position:relative;display:inline-block;
  background:linear-gradient(135deg,var(--primary) 0%,var(--violet) 100%);
  border-radius:8px 3px 8px 3px;
  box-shadow:0 0 16px rgba(0,224,198,0.45);
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;background:var(--surface);border-radius:3px;
}
.brand-text{
  font-size:15px;font-weight:700;color:var(--text);letter-spacing:0;white-space:nowrap;
}
.nav-group{display:flex;flex-direction:column;gap:4px;margin-top:8px}
.nav-title{
  font-size:11px;letter-spacing:.14em;color:var(--text-3);
  padding:14px 12px 8px;text-transform:none;
}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:44px;padding:0 12px;border-radius:10px;
  color:var(--text-2);font-size:15px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-item svg{width:18px;height:18px;flex:none}
.nav-item:hover{background:rgba(255,255,255,0.05);color:var(--text)}
.nav-item.active{background:rgba(0,224,198,0.10);color:var(--primary)}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;
  background:var(--primary);box-shadow:0 0 12px rgba(0,224,198,0.7);
}
.sidebar-divider{height:1px;background:rgba(255,255,255,0.06);margin:18px 6px}
.sidebar-aux{margin-top:auto;padding:0 6px;font-size:12px;color:var(--text-3);line-height:1.9}
.sidebar-aux a{display:block;min-height:32px;color:var(--text-3);transition:color .2s var(--ease)}
.sidebar-aux a:hover{color:var(--primary)}
.sidebar-aux .aux-title{color:var(--text-2);font-size:12px;margin-bottom:4px}

/* ============ 移动端顶栏与抽屉 ============ */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:80;
  align-items:center;justify-content:space-between;gap:12px;
  padding:0 16px;
  background:rgba(15,21,32,0.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.mobile-bar .mb-brand{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:700}
.mobile-bar .brand-mark{width:22px;height:22px}
.mobile-bar .brand-mark::after{inset:6px}
.hamburger{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border-radius:10px;background:transparent;border:0;color:var(--text);cursor:pointer;
  transition:background .2s var(--ease);
}
.hamburger:hover{background:rgba(255,255,255,0.06)}
.hamburger svg{width:22px;height:22px}
.mb-cta{
  min-height:36px;padding:0 14px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary-active));
  color:#05201C;font-weight:700;font-size:13px;display:inline-flex;align-items:center;
  border:0;cursor:pointer;
}
.overlay{
  position:fixed;inset:0;background:rgba(0,0,0,0.6);z-index:55;
  opacity:0;pointer-events:none;transition:opacity .22s var(--ease);
}
.overlay.show{opacity:1;pointer-events:auto}

/* ============ 布局容器 ============ */
.main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px}
.section{padding:96px 0}
.section-sm{padding:64px 0}
.section-alt{background:
  radial-gradient(900px 420px at 12% -10%,rgba(108,92,231,0.16),transparent 62%),
  radial-gradient(700px 360px at 92% 8%,rgba(0,224,198,0.10),transparent 60%),
  var(--bg);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--accent);
  background:rgba(255,122,47,0.12);
  border-radius:999px;padding:4px 12px;line-height:1.6;
}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{font-size:clamp(24px,2.6vw,34px)}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15px}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  min-height:340px;
  display:flex;align-items:flex-end;
  padding:56px 0 48px;
  background-image:
    linear-gradient(135deg,rgba(10,13,20,0.88),rgba(10,13,20,0.95)),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(0,224,198,0.20),transparent 68%);
  pointer-events:none;
}
.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);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-3);opacity:.7}
.hero h1{font-size:clamp(30px,4.2vw,52px);max-width:820px}
.hero-sub{
  margin-top:16px;color:var(--text-2);font-size:17px;max-width:640px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:12px;
  font-weight:700;font-size:15px;cursor:pointer;border:1px solid transparent;
  transition:background .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),transform .12s var(--ease),color .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-active) 100%);
  color:#05201C;
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 22px rgba(0,224,198,0.45)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:var(--glass);border-color:var(--line-strong);color:var(--text);
  backdrop-filter:blur(14px);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-text{
  background:transparent;border:0;color:var(--text-2);padding:0 4px;min-height:44px;
}
.btn-text:hover{color:var(--primary);text-decoration:underline;text-underline-offset:6px}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;line-height:1;white-space:nowrap;
}
.badge-accent{background:rgba(255,122,47,0.12);color:var(--accent)}
.badge-primary{background:rgba(0,224,198,0.12);color:var(--primary)}
.badge-muted{background:rgba(255,255,255,0.06);color:var(--text-2)}
.tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  color:var(--text-2);font-size:13px;
}

/* ============ 卡片 ============ */
.card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  backdrop-filter:blur(14px);
  padding:24px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.card:hover{
  border-color:rgba(0,224,198,0.32);
  box-shadow:0 0 24px rgba(0,224,198,0.18);
  transform:translateY(-2px);
}
.card-glass-lg{border-radius:var(--r-lg);box-shadow:var(--shadow)}

/* ============ 指标条 ============ */
.metrics{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;
}
.metric{
  position:relative;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;backdrop-filter:blur(14px);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.metric:hover{border-color:rgba(0,224,198,0.32);box-shadow:0 0 24px rgba(0,224,198,0.16)}
.metric .m-badge{position:absolute;top:18px;right:18px}
.metric .m-num{
  font-size:clamp(32px,3.4vw,44px);font-weight:700;line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;color:var(--text);
}
.metric .m-num em{font-style:normal;font-size:15px;color:var(--accent);margin-left:6px;letter-spacing:.02em}
.metric .m-desc{margin-top:8px;font-size:14px;color:var(--text-2)}

/* ============ Bento 矩阵 ============ */
.bento{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:20px}
.bcard{
  position:relative;display:flex;flex-direction:column;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;backdrop-filter:blur(14px);overflow:hidden;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.bcard:hover{border-color:rgba(0,224,198,0.32);box-shadow:0 0 24px rgba(0,224,198,0.18);transform:translateY(-2px)}
.bcard-lg{grid-column:span 4;grid-row:span 2;padding:0}
.bcard-lg .bcard-media{
  aspect-ratio:16/9;width:100%;overflow:hidden;border-radius:var(--r-lg) var(--r-lg) 0 0;
}
.bcard-lg .bcard-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.bcard-lg:hover .bcard-media img{transform:scale(1.03)}
.bcard-lg .bcard-body{padding:24px}
.bcard-md{grid-column:span 2}
.bcard-row{grid-column:span 2;flex-direction:row;align-items:center;gap:14px;padding:20px}
.bcard-row .bcard-icon{flex:none}
.bcard h3{font-size:19px;font-weight:600}
.bcard p{margin-top:10px;color:var(--text-2);font-size:14px;line-height:1.75}
.bcard-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;gap:8px;color:var(--primary);font-size:14px;font-weight:600}
.bcard-foot svg{width:16px;height:16px;transition:transform .2s var(--ease)}
.bcard:hover .bcard-foot svg{transform:translateX(4px)}
.bcard-icon{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(0,224,198,0.10);color:var(--primary);flex:none;
}
.bcard-icon svg{width:20px;height:20px}

/* ============ 对比区 ============ */
.cmp{
  border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--glass);backdrop-filter:blur(14px);overflow:hidden;
}
.cmp-head,.cmp-row{
  display:grid;grid-template-columns:1.1fr 1fr 1.2fr;gap:0;
}
.cmp-head{
  background:rgba(255,255,255,0.03);
  border-bottom:1px solid var(--line);
  font-size:13px;color:var(--text-3);letter-spacing:.04em;
}
.cmp-head span{padding:16px 22px}
.cmp-row{border-bottom:1px solid var(--line);transition:background .2s var(--ease)}
.cmp-row:last-child{border-bottom:0}
.cmp-row:hover{background:rgba(255,255,255,0.03)}
.cmp-row > span{padding:18px 22px;display:flex;align-items:center;gap:10px;font-size:15px;color:var(--text-2)}
.cmp-label{color:var(--text);font-weight:600}
.cmp-good{color:var(--primary);font-weight:600}
.cmp-good svg{width:18px;height:18px;flex:none}
.cmp-vs{position:relative}
.cmp-head span:last-child,.cmp-row > span:last-child{border-left:1px solid rgba(0,224,198,0.22)}

/* ============ 时间线 ============ */
.timeline{position:relative;max-width:820px;padding-left:36px}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,rgba(0,224,198,0.75),rgba(108,92,231,0.35),rgba(255,255,255,0.06));
}
.tl-item{position:relative;padding:0 0 34px 0}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-35px;top:8px;width:12px;height:12px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 14px rgba(0,224,198,0.8);
}
.tl-item h3{font-size:19px;display:flex;align-items:center;gap:10px}
.tl-item .tl-step{
  font-size:12px;color:var(--accent);background:rgba(255,122,47,0.12);
  border-radius:999px;padding:3px 10px;line-height:1.5;font-weight:600;
}
.tl-item p{margin-top:8px;color:var(--text-2);font-size:15px}

/* ============ FAQ ============ */
.faq{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);
  backdrop-filter:blur(14px);overflow:hidden;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item.open{border-color:rgba(0,224,198,0.32);box-shadow:0 0 24px rgba(0,224,198,0.14)}
.faq-q{
  width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  color:var(--text);font-size:16px;font-weight:600;
}
.faq-q .arrow{flex:none;width:20px;height:20px;color:var(--text-3);transition:transform .22s var(--ease),color .22s var(--ease)}
.faq-item.open .faq-q .arrow{transform:rotate(180deg);color:var(--primary)}
.faq-a{
  display:none;padding:0 22px 20px 22px;color:var(--text-2);font-size:15px;
  border-left:3px solid var(--primary);margin-left:0;
}
.faq-item.open .faq-a{display:block}

/* ============ CTA / 表单 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid rgba(0,224,198,0.20);
  background:
    radial-gradient(600px 300px at 88% 10%,rgba(0,224,198,0.20),transparent 65%),
    radial-gradient(520px 280px at 6% 96%,rgba(108,92,231,0.22),transparent 68%),
    var(--surface);
  padding:44px;
}
.cta-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:center}
.cta-band h2{font-size:clamp(24px,2.6vw,32px)}
.cta-band p{margin-top:14px;color:var(--text-2);font-size:15px}
.cta-form{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.field{
  flex:1 1 220px;min-height:48px;display:flex;align-items:center;
  background:rgba(10,13,20,0.55);border:1px solid rgba(255,255,255,0.10);
  border-radius:12px;padding:0 16px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(0,224,198,0.14)}
.field input{width:100%;font-size:15px;color:var(--text)}
.field input::placeholder{color:var(--text-3)}
.cta-points{display:grid;gap:14px}
.point{
  display:flex;align-items:center;gap:16px;
  background:rgba(255,255,255,0.04);border:1px solid var(--line);
  border-radius:var(--r-md);padding:18px 20px;
}
.point strong{
  font-size:26px;font-variant-numeric:tabular-nums;letter-spacing:.02em;color:var(--primary);
  min-width:78px;
}
.point span{font-size:14px;color:var(--text-2)}

/* ============ 页脚 ============ */
.footer{
  border-top:1px solid rgba(255,255,255,0.06);
  background:var(--surface);
  margin-top:auto;
}
.footer-inner{max-width:1280px;margin:0 auto;padding:56px 40px 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer h4{font-size:14px;color:var(--text);margin-bottom:14px;font-weight:600}
.footer p{color:var(--text-3);font-size:13px;line-height:1.9}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;color:var(--text)}
.footer .brand-mark{width:22px;height:22px}
.footer .brand-mark::after{inset:6px}
.footer ul{display:flex;flex-direction:column;gap:10px}
.footer ul a{color:var(--text-3);font-size:13px;transition:color .2s var(--ease)}
.footer ul a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,0.06);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  color:var(--text-3);font-size:12px;
}

/* ============ 响应式 ============ */
@media (min-width:768px) and (max-width:1023px){
  :root{--sidebar-w:72px}
  .sidebar{padding:0 12px 22px;align-items:center;overflow:visible}
  .brand{justify-content:center;padding:0}
  .brand-text,.nav-title,.sidebar-aux,.sidebar-divider{display:none}
  .nav-group{width:100%;align-items:center}
  .nav-item{width:48px;min-height:44px;justify-content:center;padding:0}
  .nav-item span{
    position:absolute;left:62px;top:50%;transform:translateY(-50%);
    background:var(--card);border:1px solid var(--line);
    padding:6px 12px;border-radius:8px;white-space:nowrap;font-size:13px;color:var(--text);
    opacity:0;pointer-events:none;transition:opacity .18s var(--ease);
    box-shadow:var(--shadow);z-index:70;
  }
  .nav-item:hover span,.nav-item:focus-visible span{opacity:1}
  .container{padding:0 28px}
  .footer-inner{padding:48px 28px 24px}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bento{grid-template-columns:repeat(4,minmax(0,1fr))}
  .bcard-lg{grid-column:span 4;grid-row:auto}
  .bcard-md,.bcard-row{grid-column:span 2}
  .cta-grid{grid-template-columns:1fr}
}

@media (max-width:767px){
  .mobile-bar{display:flex}
  .sidebar{
    width:78vw;max-width:320px;
    transform:translateX(-100%);
    transition:transform .24s var(--ease);
    background:rgba(15,21,32,0.97);
    backdrop-filter:blur(14px);
    padding:0 16px 22px;
  }
  .sidebar.open{transform:translateX(0)}
  .brand-text,.nav-title,.sidebar-aux{display:block}
  .sidebar-aux{display:block}
  .brand{height:64px}
  .main{margin-left:0;padding-top:56px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-sm{padding:44px 0}
  .hero{padding:40px 0 36px;min-height:300px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%}
  .metrics{grid-template-columns:1fr}
  .bento{grid-template-columns:1fr}
  .bcard-lg,.bcard-md,.bcard-row{grid-column:span 1}
  .bcard-row{flex-direction:row}
  .cmp-head{display:none}
  .cmp-row{grid-template-columns:1fr;padding:6px 0}
  .cmp-row > span{padding:8px 18px;border-left:0 !important}
  .cmp-row > span:first-child{padding-top:18px;font-size:13px;color:var(--text-3)}
  .cmp-row > span:last-child{border-left:0 !important;padding-bottom:18px}
  .cmp-row > span:nth-child(2)::before{content:"分散渠道：";color:var(--text-3);font-size:13px}
  .timeline{padding-left:28px}
  .tl-item::before{left:-27px}
  .cta-band{padding:26px 20px}
  .cta-form{flex-direction:column}
  .field{flex:1 1 auto;width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-inner{padding:40px 20px 22px}
  .footer-bottom{flex-direction:column;gap:6px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .card:hover,.bcard:hover,.bcard-lg:hover .bcard-media img{transform:none}
}

/* roulang page: category3 */
:root{
  --bg:#0A0D14;
  --surface:#0F1520;
  --card:#141C2A;
  --primary:#00E0C6;
  --primary-hover:#33EBD6;
  --primary-active:#00B8A3;
  --accent:#FF7A2F;
  --accent-hover:#FF9552;
  --violet:#6C5CE7;
  --text:#E9EFF7;
  --text-2:#9BA8BE;
  --text-3:#6B7789;
  --success:#3DD68C;
  --warn:#FFB020;
  --danger:#FF5A5F;
  --border:rgba(255,255,255,.08);
  --border-strong:rgba(255,255,255,.18);
  --glass:rgba(255,255,255,.045);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-btn:10px;
  --shadow:0 8px 30px rgba(0,0,0,.45);
  --sidebar-w:248px;
  --section-y:96px;
}
*,*::before,*::after{box-sizing:border-box}
body.site-body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{list-style:none;margin:0;padding:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(0,224,198,.22);border-radius:6px}
::selection{background:rgba(0,224,198,.28);color:#E9EFF7}

/* ============ 布局骨架 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--surface);
  border-right:1px solid rgba(255,255,255,.06);
  display:flex;
  flex-direction:column;
  padding:0 14px 18px;
  z-index:60;
  overflow-y:auto;
}
.logo-area{
  height:72px;
  display:flex;
  align-items:center;
  gap:10px;
  padding:0 8px;
  border-bottom:1px solid rgba(255,255,255,.06);
  margin-bottom:16px;
  flex:0 0 auto;
}
.logo-dot{
  width:12px;height:12px;flex:0 0 auto;
  border-radius:3px;
  background:linear-gradient(135deg,#00E0C6,#6C5CE7);
  box-shadow:0 0 14px rgba(0,224,198,.7);
  transform:rotate(45deg);
}
.logo-text{
  font-size:15px;
  font-weight:700;
  letter-spacing:0;
  white-space:nowrap;
  color:var(--text);
}
.nav-group{display:flex;flex-direction:column;gap:6px}
.nav-title{
  font-size:12px;
  color:var(--text-3);
  padding:6px 12px;
  letter-spacing:.08em;
}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  min-height:44px;
  height:44px;
  padding:0 12px;
  border-radius:10px;
  color:var(--text-2);
  font-size:14.5px;
  transition:background-color .2s ease-out,color .2s ease-out;
}
.nav-item svg{width:18px;height:18px;flex:0 0 auto}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text)}
.nav-item.active{background:rgba(0,224,198,.10);color:var(--primary)}
.nav-item.active::before{
  content:'';
  position:absolute;
  left:0;top:10px;bottom:10px;
  width:3px;
  border-radius:3px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(0,224,198,.7);
}
.sidebar-foot{
  margin-top:auto;
  padding:14px 12px 0;
  border-top:1px solid rgba(255,255,255,.06);
  display:flex;
  flex-direction:column;
  gap:8px;
}
.side-link{font-size:13px;color:var(--text-2);transition:color .2s ease-out}
.side-link:hover{color:var(--primary)}
.side-note{font-size:12px;color:var(--text-3);margin:6px 0 0;line-height:1.6}

.main{margin-left:var(--sidebar-w);min-height:100vh}
.site-container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px}

/* ============ 移动端顶栏与抽屉 ============ */
.mobile-bar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:56px;
  align-items:center;
  gap:12px;
  padding:0 14px;
  background:rgba(15,21,32,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  z-index:70;
}
.hamburger{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  background:transparent;
  border:1px solid var(--border);
  border-radius:10px;
  cursor:pointer;
  color:var(--text);
  transition:border-color .2s ease-out,color .2s ease-out;
}
.hamburger:hover{border-color:rgba(0,224,198,.5);color:var(--primary)}
.mobile-brand{
  flex:1;
  font-size:14.5px;
  font-weight:700;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.drawer-mask{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.6);
  z-index:55;
  opacity:0;
  transition:opacity .2s ease-out;
}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:all .2s ease-out;
}
.btn-primary{
  background:linear-gradient(135deg,#00E0C6,#00B8A3);
  color:#05201C;
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 22px rgba(0,224,198,.45)}
.btn-primary:active{transform:translateY(1px)}
.btn-glass{
  background:rgba(255,255,255,.045);
  border-color:var(--border-strong);
  color:var(--text);
}
.btn-glass:hover{border-color:rgba(0,224,198,.6);color:var(--primary)}
.btn-sm{min-height:38px;padding:0 16px;font-size:13.5px;border-radius:9px}
.btn-xs{min-height:34px;padding:0 12px;font-size:13px;border-radius:9px}
.btn-block{width:100%}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:24px;
  padding:0 8px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  line-height:1;
}
.badge-orange{background:rgba(255,122,47,.12);color:var(--accent-hover)}
.badge-teal{background:rgba(0,224,198,.12);color:var(--primary)}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--text-3);transition:color .2s ease-out}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:.7}
.breadcrumb .current{
  color:var(--text-2);
  max-width:24ch;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

.section{padding:var(--section-y) 0}
.section-tight{padding:64px 0}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-title{
  font-size:clamp(24px,2.6vw,34px);
  font-weight:700;
  line-height:1.3;
  letter-spacing:0;
  margin:12px 0 12px;
  color:var(--text);
}
.sec-desc{color:var(--text-2);font-size:15.5px;margin:0;line-height:1.85}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden}
.hero-cat{
  min-height:480px;
  display:flex;
  align-items:center;
  padding:72px 0 88px;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  transform:scale(1.02);
}
.hero-veil{
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,rgba(10,13,20,.88),rgba(10,13,20,.95));
}
.hero-inner{position:relative;z-index:2;max-width:900px}
.hero-title{
  font-size:clamp(30px,4.2vw,52px);
  font-weight:700;
  line-height:1.18;
  letter-spacing:0;
  margin:14px 0 14px;
  color:var(--text);
}
.hero-sub{
  font-size:clamp(16px,1.6vw,19px);
  color:var(--text-2);
  max-width:640px;
  margin:0 0 22px;
  line-height:1.8;
}
.hero-note{
  font-size:14px;
  color:var(--text-3);
  max-width:700px;
  margin:0 0 28px;
  line-height:1.85;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 指标条 ============ */
.stat-band{
  position:relative;
  z-index:5;
  margin-top:-56px;
  padding-bottom:8px;
}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.stat-card{
  background:var(--glass);
  border:1px solid var(--border);
  border-radius:var(--r-md);
  padding:24px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  transition:border-color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out;
}
.stat-card:hover{
  border-color:rgba(0,224,198,.32);
  box-shadow:0 0 24px rgba(0,224,198,.18);
  transform:translateY(-2px);
}
.stat-num{
  font-size:clamp(30px,3.2vw,42px);
  font-weight:700;
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
  color:var(--text);
}
.stat-num .unit{font-size:14px;font-weight:600;color:var(--text-3);margin-left:4px}
.stat-label{font-size:13.5px;color:var(--text-2);margin-top:6px;letter-spacing:0}

/* ============ 图文并置 ============ */
.feature-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  margin-bottom:88px;
}
.feature-row:last-child{margin-bottom:0}
.feature-row.reverse .feature-media{order:2}
.feature-row.reverse .feature-text{order:1}
.feature-media{
  position:relative;
  aspect-ratio:16/9;
  border-radius:var(--r-sm);
  overflow:hidden;
  border:1px solid var(--border);
  background:var(--card);
}
.feature-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .24s ease-out;
}
.feature-media:hover img{transform:scale(1.03)}
.feature-title{
  font-size:21px;
  font-weight:600;
  line-height:1.5;
  margin:14px 0 12px;
  color:var(--text);
}
.feature-text p{margin:0;color:var(--text-2);font-size:15.5px;line-height:1.85}
.perks{display:flex;flex-direction:column;gap:10px;margin-top:18px}
.perks li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.75;
}
.perks .tick{
  flex:0 0 auto;
  width:18px;height:18px;
  margin-top:5px;
  border-radius:999px;
  background:rgba(0,224,198,.14);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:11px;
  font-weight:700;
}

/* ============ 数据条 ============ */
.bar-panel{
  background:var(--glass);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:32px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.bar-item{margin-bottom:22px}
.bar-item:last-child{margin-bottom:0}
.bar-head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  font-size:14px;
  color:var(--text-2);
  margin-bottom:10px;
}
.bar-head b{
  color:var(--text);
  font-size:16px;
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.bar-track{
  height:8px;
  border-radius:999px;
  background:rgba(255,255,255,.07);
  overflow:hidden;
}
.bar-fill{
  height:100%;
  border-radius:999px;
  background:linear-gradient(90deg,#00E0C6,#00B8A3);
}
.bar-fill.alt{background:linear-gradient(90deg,#FF7A2F,#FF9552)}
.bar-fill.vio{background:linear-gradient(90deg,#6C5CE7,#8E7BF5)}
.bar-note{font-size:13px;color:var(--text-3);margin-top:24px;line-height:1.75}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{
  background:var(--glass);
  border:1px solid var(--border);
  border-radius:var(--r-md);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .2s ease-out;
}
.faq-item:last-child{margin-bottom:0}
.faq-item.open{border-color:rgba(0,224,198,.32)}
.faq-q{
  width:100%;
  min-height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:16px 20px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
  transition:color .2s ease-out;
}
.faq-q:hover{color:var(--primary)}
.faq-arrow{
  flex:0 0 auto;
  color:var(--text-3);
  transition:transform .2s ease-out,color .2s ease-out;
}
.faq-item.open .faq-arrow{transform:rotate(180deg);color:var(--primary)}
.faq-a{
  max-height:0;
  overflow:hidden;
  padding:0 20px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.85;
  border-left:3px solid transparent;
  transition:max-height .24s ease-out,padding .24s ease-out,border-color .24s ease-out;
}
.faq-item.open .faq-a{
  max-height:420px;
  padding:0 20px 20px;
  border-left-color:var(--primary);
}

/* ============ 表单 ============ */
.contact-grid{
  display:grid;
  grid-template-columns:1.25fr .9fr;
  gap:28px;
  align-items:start;
}
.form-card,.trust-card{
  background:var(--glass);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:28px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.form-title{font-size:20px;font-weight:700;margin:0 0 6px}
.form-sub{font-size:13.5px;color:var(--text-3);margin:0 0 24px}
.field{margin-bottom:20px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;
  min-height:44px;
  padding:12px 14px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.10);
  border-radius:10px;
  font-size:15px;
  color:var(--text);
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.field textarea{min-height:120px;resize:vertical;line-height:1.75}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(0,224,198,.16);
}
.field select option{background:#141C2A;color:#E9EFF7}
.form-hint{font-size:12.5px;color:var(--text-3);margin-top:12px;line-height:1.7}
.trust-item{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  padding:14px 0;
  border-bottom:1px dashed rgba(255,255,255,.08);
}
.trust-item:last-child{border-bottom:0}
.trust-label{font-size:14px;color:var(--text-2)}
.trust-num{
  font-size:26px;
  font-weight:700;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.trust-num span{font-size:13px;font-weight:600;color:var(--text-3);margin-left:3px}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}
.cta-band::before{
  content:'';
  position:absolute;
  width:340px;height:340px;
  right:-90px;top:-130px;
  background:radial-gradient(circle,rgba(0,224,198,.22),transparent 65%);
  pointer-events:none;
}
.cta-band::after{
  content:'';
  position:absolute;
  width:260px;height:260px;
  left:-100px;bottom:-140px;
  background:radial-gradient(circle,rgba(108,92,231,.20),transparent 68%);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:2;max-width:640px}
.cta-copy h2{
  font-size:clamp(22px,2.3vw,30px);
  font-weight:700;
  line-height:1.35;
  margin:10px 0 10px;
}
.cta-copy p{margin:0;color:var(--text-2);font-size:15px}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.footer{
  border-top:1px solid var(--border);
  background:#0C111A;
  margin-top:88px;
}
.footer-inner{max-width:1280px;margin:0 auto;padding:64px 40px 24px}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1fr;
  gap:32px;
}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px}
.brand-mark{
  display:inline-block;
  width:12px;height:12px;
  border-radius:3px;
  background:linear-gradient(135deg,#00E0C6,#6C5CE7);
  box-shadow:0 0 14px rgba(0,224,198,.7);
  transform:rotate(45deg);
}
.brand-text{font-size:15px;font-weight:700}
.footer p{font-size:14px;color:var(--text-2);max-width:380px;line-height:1.85}
.footer h4{font-size:14px;font-weight:700;margin:0 0 14px;color:var(--text)}
.footer ul{display:flex;flex-direction:column;gap:10px}
.footer ul a{font-size:14px;color:var(--text-2);transition:color .2s ease-out}
.footer ul a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  border-top:1px solid var(--border);
  margin-top:44px;
  padding-top:20px;
  font-size:13px;
  color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .site-container{padding:0 32px}
  .footer-inner{padding:56px 32px 20px}
  .feature-row{gap:40px}
}
@media (max-width:1023px){
  :root{--sidebar-w:72px;--section-y:76px}
  .logo-text,.nav-title,.sidebar-foot .side-link,.sidebar-foot .side-note{display:none}
  .nav-item{justify-content:center;padding:0}
  .nav-item span{
    position:absolute;
    left:66px;top:50%;
    transform:translateY(-50%);
    background:var(--card);
    border:1px solid var(--border);
    border-radius:8px;
    padding:6px 10px;
    font-size:13px;
    white-space:nowrap;
    opacity:0;
    pointer-events:none;
    transition:opacity .18s ease-out;
    z-index:80;
    color:var(--text);
  }
  .nav-item:hover span,.nav-item:focus-visible span{opacity:1}
  .site-container{padding:0 28px}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .feature-row{grid-template-columns:1fr;gap:28px;margin-bottom:56px}
  .feature-row.reverse .feature-media{order:0}
  .feature-row.reverse .feature-text{order:0}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-inner{padding:48px 28px 20px}
  .stat-band{margin-top:-40px}
}
@media (max-width:767px){
  :root{--section-y:56px}
  .mobile-bar{display:flex}
  .sidebar{
    width:78vw;
    max-width:320px;
    transform:translateX(-100%);
    transition:transform .24s ease-out;
    background:rgba(15,21,32,.96);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    padding-top:8px;
  }
  body.drawer-open .sidebar{transform:translateX(0)}
  body.drawer-open{overflow:hidden}
  body.drawer-open .drawer-mask{display:block;opacity:1}
  .logo-text{display:block}
  .nav-title{display:block}
  .nav-item{justify-content:flex-start;padding:0 12px}
  .nav-item span{
    position:static;
    transform:none;
    opacity:1;
    background:transparent;
    border:0;
    padding:0;
    font-size:14.5px;
  }
  .sidebar-foot .side-link,.sidebar-foot .side-note{display:block}
  .main{margin-left:0;padding-top:56px}
  .site-container{padding:0 20px}
  .hero-cat{min-height:auto;padding:56px 0 72px}
  .stat-band{margin-top:-36px}
  .stat-grid{grid-template-columns:1fr}
  .bar-panel,.form-card,.trust-card{padding:22px}
  .cta-band{padding:26px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr}
  .footer-inner{padding:44px 20px 20px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  .stat-card:hover,.feature-media:hover img{transform:none}
}