/* roulang page: index */
:root{
  --bg:#060B16;
  --bg-alt:#0A1120;
  --panel:#0F1830;
  --primary:#16C2CE;
  --primary-dark:#0FA3AF;
  --primary-mist:rgba(22,194,206,.14);
  --amber:#FFB65C;
  --glass:rgba(255,255,255,.055);
  --glass-border:rgba(255,255,255,.10);
  --glass-top:rgba(255,255,255,.16);
  --text:#E8EEF7;
  --text-2:#A9B6CC;
  --text-3:#6E7C96;
  --white:#F7FAFF;
  --success:#38D39F;
  --warn:#FFB65C;
  --error:#FF6B6B;
  --radius:20px;
  --radius-sm:14px;
  --radius-xs:12px;
  --shadow:0 8px 30px rgba(0,0,0,.35);
  --shadow-lg:0 16px 48px rgba(0,0,0,.45);
  --glow:0 8px 24px rgba(22,194,206,.35);
  --ease:cubic-bezier(.4,0,.2,1);
  --t:180ms cubic-bezier(.4,0,.2,1);
  --sidebar-w:248px;
  --mono:ui-monospace,"SF Mono","JetBrains Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{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;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color var(--t),background var(--t),border-color var(--t),transform var(--t),box-shadow var(--t),opacity var(--t)}
a:hover{text-decoration:underline;text-underline-offset:4px}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
img{max-width:100%;display:block}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.nav-item:hover,.btn:hover,.news-card:hover,.brand:hover,.to-top:hover,.burger:hover{text-decoration:none}

/* ---------- 布局骨架 ---------- */
.page{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
.container{width:100%;max-width:1320px;margin:0 auto;padding:0 48px}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt);border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05)}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);color:var(--white)}
.sec-head p{margin-top:10px;color:var(--text-2);font-size:14px;line-height:1.7}

/* ---------- 左侧竖向导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:#080E1B;
  border-right:1px solid rgba(255,255,255,.08);
  display:flex;flex-direction:column;gap:24px;
  padding:24px 16px;z-index:80;overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:12px;padding:6px 8px;border-radius:var(--radius-xs)}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  background:linear-gradient(140deg,var(--primary),#0B8F99);
  position:relative;
  box-shadow:0 0 0 1px rgba(22,194,206,.45),0 6px 18px rgba(22,194,206,.28);
}
.brand-mark::before{
  content:"";position:absolute;inset:9px;border:2px solid rgba(6,11,22,.75);border-radius:5px;
}
.brand-text{font-size:17px;font-weight:700;color:var(--white);letter-spacing:.02em;white-space:nowrap}
.side-menu{display:flex;flex-direction:column;gap:4px;flex:1 1 auto}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:46px;padding:0 16px;border-radius:var(--radius-xs);
  color:var(--text-2);font-size:15px;
}
.nav-item .ico{width:20px;height:20px;flex:0 0 20px}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--white)}
.nav-item.is-active{background:var(--primary-mist);color:var(--primary)}
.nav-item.is-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(22,194,206,.85);
}
.side-foot{
  margin-top:auto;display:flex;flex-direction:column;gap:12px;
  padding-top:18px;border-top:1px solid rgba(255,255,255,.08);
}
.side-note{font-size:12.5px;color:var(--text-3);line-height:1.7}
.side-copy{font-size:12.5px;color:var(--text-3)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-xs);
  font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;
  transition:background var(--t),border-color var(--t),color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-primary{
  background:var(--primary);color:#04222A;
  box-shadow:var(--glow),inset 0 1px 0 rgba(255,255,255,.22);
}
.btn-primary:hover{background:#1AD3E0;transform:translateY(-1px);box-shadow:0 10px 30px rgba(22,194,206,.48),inset 0 1px 0 rgba(255,255,255,.25)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.16);color:var(--text);
}
.btn-ghost:hover{border-color:rgba(22,194,206,.45);color:var(--white);background:rgba(255,255,255,.08)}
.btn-block{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  background:var(--glass);border:1px solid var(--glass-border);
  font-size:12.5px;color:var(--text-2);line-height:1;
}
.badge-primary{color:var(--primary);border-color:rgba(22,194,206,.35);background:rgba(22,194,206,.10)}
.badge-amber{color:var(--amber);border-color:rgba(255,182,92,.32);background:rgba(255,182,92,.10)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;display:flex;align-items:center;min-height:78vh;padding:96px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.36;
}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,22,.72),rgba(6,11,22,.94))}
.hero-glow{position:absolute;inset:0;pointer-events:none;background:radial-gradient(480px 480px at 10% 6%,rgba(22,194,206,.18),transparent 70%)}
.hero-grid-lines{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:40px 40px;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center;width:100%}
.hero-copy{grid-column:span 6}
.hero-visual{grid-column:span 6}
.hero h1{
  margin-top:20px;font-size:clamp(30px,4vw,48px);line-height:1.25;color:var(--white);
}
.hero-sub{margin-top:16px;font-size:16px;color:var(--text-2);max-width:520px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}

.status-panel{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-top-color:var(--glass-top);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-lg);
}
.panel-head{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-2);padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.08)}
.panel-head .dot{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 10px rgba(56,211,159,.8)}
.panel-time{margin-left:auto;font-size:12.5px;color:var(--text-3);font-family:var(--mono)}
.status-list{display:flex;flex-direction:column;gap:14px;padding:20px 0}
.status-list li{display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:14px;color:var(--text-2)}
.status-list strong{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:16px;color:var(--amber);font-weight:600}
.panel-foot{font-size:12.5px;color:var(--text-3);padding-top:16px;border-top:1px solid rgba(255,255,255,.08)}

/* ---------- 指标看板 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
  background:linear-gradient(180deg,var(--panel),#0B1327);
  border:1px solid var(--glass-border);border-radius:var(--radius);
  padding:28px 24px;box-shadow:var(--shadow);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.stat-card:hover{transform:translateY(-2px);border-color:rgba(22,194,206,.4);box-shadow:var(--shadow-lg)}
.stat-ico{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;background:var(--glass);border:1px solid var(--glass-border);color:var(--primary)}
.stat-ico svg{width:18px;height:18px}
.stat-num{margin-top:18px;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:clamp(30px,3vw,42px);font-weight:700;line-height:1.05;color:var(--amber)}
.stat-num sup{font-size:14px;color:var(--text-2);margin-left:4px;font-weight:500}
.stat-label{margin-top:8px;font-size:13px;color:var(--text-3);line-height:1.6}

/* ---------- 服务矩阵 ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px}
.svc-card{
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  border:1px solid var(--glass-border);border-top-color:var(--glass-top);
  border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);
  display:flex;flex-direction:column;gap:12px;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.svc-card:hover{transform:translateY(-2px);border-color:rgba(22,194,206,.45);box-shadow:var(--shadow-lg)}
.svc-card h3{font-size:18px;color:var(--white)}
.svc-card p{font-size:14px;color:var(--text-2);line-height:1.7}
.svc-ico{width:40px;height:40px;border-radius:var(--radius-xs);display:grid;place-items:center;background:rgba(22,194,206,.10);border:1px solid rgba(22,194,206,.28);color:var(--primary)}
.svc-ico svg{width:20px;height:20px}
.svc-lg{grid-column:span 3;grid-row:span 2;position:relative;overflow:hidden;padding:28px;justify-content:flex-end;min-height:420px;gap:0}
.svc-lg .svc-bg{position:absolute;inset:0;background-image:url('/assets/images/coverpic/cover-1.png');background-size:cover;background-position:center;opacity:.6;transition:transform 320ms var(--ease)}
.svc-lg:hover .svc-bg{transform:scale(1.03)}
.svc-lg .svc-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,22,.35),rgba(6,11,22,.93))}
.svc-lg .svc-body{position:relative;z-index:2}
.svc-lg h3{margin-top:14px;font-size:22px}
.svc-lg p{margin-top:10px;max-width:420px}
.svc-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14px;font-weight:600;color:var(--primary)}
.svc-link:hover{text-decoration:none;color:#3AD9E4}
.svc-md{grid-column:span 3}
.svc-sm{grid-column:span 2;padding:22px}
.svc-sm h3{font-size:16px}
.svc-sm p{font-size:13.5px}

/* ---------- 结果对比 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-col{
  background:var(--glass);border:1px solid var(--glass-border);
  border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);
}
.compare-col.is-after{border-color:rgba(22,194,206,.35);background:rgba(22,194,206,.06);box-shadow:var(--shadow-lg)}
.compare-col h3{font-size:17px;color:var(--white)}
.compare-col .col-note{margin-top:6px;font-size:13px;color:var(--text-3);padding-bottom:20px;border-bottom:1px solid rgba(255,255,255,.08)}
.bar-row{margin-top:18px}
.bar-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-size:14px;color:var(--text-2)}
.bar-head .pct{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:14px;color:var(--text-3)}
.is-after .bar-head{color:var(--text)}
.is-after .bar-head .pct{color:var(--amber)}
.bar-track{margin-top:8px;height:8px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}
.bar-fill{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#54617A,#7A8AA6)}
.is-after .bar-fill{background:linear-gradient(90deg,var(--primary),#7DF0F7);box-shadow:0 0 14px rgba(22,194,206,.5)}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:rgba(255,255,255,.045);
  border:1px solid var(--glass-border);border-top-color:var(--glass-top);
  border-radius:var(--radius);box-shadow:var(--shadow);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.news-card:hover{transform:translateY(-2px);border-color:rgba(22,194,206,.45);box-shadow:var(--shadow-lg)}
.news-cover{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,#12203A,#0F1830);overflow:hidden}
.news-cover img{width:100%;height:100%;object-fit:cover;opacity:.85}
.news-tag{
  position:absolute;left:14px;bottom:14px;height:26px;padding:0 12px;border-radius:999px;
  display:inline-flex;align-items:center;
  background:rgba(6,11,22,.72);border:1px solid rgba(22,194,206,.35);
  backdrop-filter:blur(8px);font-size:12.5px;color:var(--primary);
}
.news-body{padding:20px 22px 18px;display:flex;flex-direction:column;flex:1 1 auto}
.news-title{
  font-size:17px;line-height:1.5;color:var(--white);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color var(--t);
}
.news-card:hover .news-title{color:var(--primary)}
.news-desc{
  margin-top:10px;font-size:14px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:16px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:13px;color:var(--text-3);
}
.news-meta .arrow{font-family:inherit;transition:transform var(--t),color var(--t)}
.news-card:hover .news-meta .arrow{transform:translateX(4px);color:var(--primary)}
.empty-state{
  grid-column:1 / -1;min-height:220px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  background:var(--glass);border:1px dashed rgba(255,255,255,.16);
  border-radius:var(--radius);color:var(--text-2);font-size:14px;text-align:center;padding:24px;
}
.empty-state svg{width:28px;height:28px;color:var(--text-3)}

/* ---------- 保障与记录 ---------- */
.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.proof-item{
  background:var(--glass);border:1px solid var(--glass-border);
  border-radius:var(--radius-sm);padding:24px;box-shadow:var(--shadow);
  transition:transform var(--t),border-color var(--t);
}
.proof-item:hover{transform:translateY(-2px);border-color:rgba(22,194,206,.4)}
.proof-item h3{font-size:16px;color:var(--white);margin-top:12px}
.proof-item p{margin-top:8px;font-size:13.5px;color:var(--text-2);line-height:1.7}
.proof-ico{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:rgba(255,182,92,.10);border:1px solid rgba(255,182,92,.28);color:var(--amber)}
.proof-ico svg{width:18px;height:18px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-top:1px solid rgba(255,255,255,.10)}
.faq-item:last-child{border-bottom:1px solid rgba(255,255,255,.10)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:16px;font-weight:600;color:var(--text);
  cursor:pointer;list-style:none;transition:color var(--t);
}
.faq-q::-webkit-details-marker{display:none}
.faq-q:hover{color:var(--primary)}
.faq-q::after{content:"+";font-size:20px;font-weight:400;color:var(--text-3);transition:transform 220ms var(--ease),color 220ms var(--ease)}
details[open] .faq-q::after{content:"−";color:var(--primary);transform:rotate(180deg)}
.faq-a{padding:0 0 20px;font-size:14px;line-height:1.8;color:var(--text-2);max-width:720px}

/* ---------- 转化表单 ---------- */
.cta-grid{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start}
.form-card{
  background:var(--glass);border:1px solid var(--glass-border);border-top-color:var(--glass-top);
  backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);
  border-radius:var(--radius);padding:32px;box-shadow:var(--shadow-lg);
}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.input{
  width:100%;height:48px;padding:0 14px;border-radius:var(--radius-xs);
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);
  color:var(--text);font-size:15px;
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
textarea.input{height:120px;padding:14px;resize:vertical;line-height:1.7}
.input::placeholder{color:var(--text-3)}
.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,194,206,.18);background:rgba(255,255,255,.06)}
.field.has-error .input{border-color:var(--error)}
.err{display:none;margin-top:6px;font-size:12px;color:var(--error)}
.field.has-error .err{display:block}
.form-ok{
  display:none;padding:16px;border-radius:var(--radius-xs);
  background:rgba(56,211,159,.12);border:1px solid rgba(56,211,159,.35);
  color:var(--success);font-size:14px;line-height:1.7;
}
.contact-list{display:flex;flex-direction:column;gap:18px;margin-top:8px}
.contact-list li{display:flex;gap:14px;align-items:flex-start}
.contact-ico{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--glass-border);color:var(--primary);
}
.contact-ico svg{width:18px;height:18px}
.contact-list strong{display:block;font-size:14px;color:var(--white);font-weight:600}
.contact-list span{display:block;font-size:13.5px;color:var(--text-2);line-height:1.7}
.side-panel-title{font-size:18px;color:var(--white)}
.side-panel-note{margin-top:10px;font-size:14px;color:var(--text-2)}

/* ---------- 页脚 ---------- */
.footer{background:#05090F;border-top:1px solid rgba(255,255,255,.08);margin-top:auto}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding:64px 0 40px}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.foot-col h4{font-size:14px;color:var(--white);margin-bottom:16px;font-weight:600}
.foot-col p,.foot-col a{display:block;font-size:13.5px;color:var(--text-2);line-height:1.9}
.foot-col a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px;transform:translateX(2px)}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:var(--text-3);
}
.to-top{
  width:44px;height:44px;flex:0 0 44px;border-radius:50%;display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--glass-border);color:var(--text-2);
}
.to-top:hover{border-color:var(--primary);color:var(--primary);text-decoration:none}
.to-top svg{width:18px;height:18px}

/* ---------- 移动端导航 ---------- */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:70;height:64px;
  align-items:center;justify-content:space-between;gap:16px;padding:0 20px;
  background:rgba(8,14,27,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.brand-sm{padding:0}
.brand-sm .brand-mark{width:32px;height:32px;flex:0 0 32px}
.brand-sm .brand-text{font-size:16px}
.burger{
  width:44px;height:44px;display:grid;place-items:center;border-radius:var(--radius-xs);
  background:var(--glass);border:1px solid rgba(255,255,255,.12);
}
.burger span{display:block;width:18px;height:2px;margin:2px 0;border-radius:2px;background:var(--text);transition:transform var(--t),opacity var(--t)}
.drawer-mask{
  position:fixed;inset:0;z-index:85;background:rgba(4,8,16,.72);
  backdrop-filter:blur(4px);opacity:0;pointer-events:none;transition:opacity 260ms var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;
  width:84vw;max-width:340px;padding:24px 16px;
  background:#080E1B;border-left:1px solid rgba(255,255,255,.08);
  display:flex;flex-direction:column;gap:20px;overflow-y:auto;
  transform:translateX(100%);transition:transform 260ms var(--ease);
}
.drawer.is-open{transform:none}
.drawer .nav-item{height:52px}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:18px;border-top:1px solid rgba(255,255,255,.08)}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 40px}
}
@media (max-width:1024px){
  .side-nav{display:none}
  .mobile-bar{display:flex}
  .page{margin-left:0}
  .container{padding:0 32px}
  .section{padding:72px 0}
  .hero{padding:72px 0;min-height:auto}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-copy,.hero-visual{grid-column:span 1}
  .stats{grid-template-columns:repeat(2,1fr)}
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .svc-lg{grid-column:span 2;grid-row:auto;min-height:340px}
  .svc-md{grid-column:span 1}
  .svc-sm{grid-column:span 1}
  .compare{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .proof-grid{grid-template-columns:repeat(2,1fr)}
  .cta-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:repeat(2,1fr);padding:48px 0 32px}
  .hero-grid-lines,.hero-glow{display:none}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:48px 0}
  .sec-head{margin-bottom:32px}
  body{font-size:15px}
  .stats{grid-template-columns:1fr}
  .svc-grid{grid-template-columns:1fr}
  .svc-lg{grid-column:span 1}
  .news-grid{grid-template-columns:1fr}
  .proof-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .faq-a{padding-bottom:16px}
  .form-card{padding:24px}
}
@media (max-width:520px){
  .hero h1{font-size:30px}
  .hero-cta .btn{width:100%}
  .form-card .btn{width:100%}
  .stat-num{font-size:32px}
  .compare-col{padding:22px}
}

/* roulang page: article */
:root{
  --bg:#060B16;
  --bg-alt:#0A1120;
  --panel:#0F1830;
  --primary:#16C2CE;
  --primary-deep:#0FA3AF;
  --primary-mist:rgba(22,194,206,.14);
  --amber:#FFB65C;
  --glass-bg:rgba(255,255,255,.055);
  --glass-bd:rgba(255,255,255,.10);
  --glass-top:rgba(255,255,255,.16);
  --text:#E8EEF7;
  --text-2:#A9B6CC;
  --text-3:#6E7C96;
  --text-inv:#F7FAFF;
  --ok:#38D39F;
  --warn:#FFB65C;
  --err:#FF6B6B;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-card:0 8px 30px rgba(0,0,0,.35);
  --sh-pop:0 16px 48px rgba(0,0,0,.45);
  --sh-glow:0 8px 24px rgba(22,194,206,.35), inset 0 1px 0 rgba(255,255,255,.22);
  --ease:180ms cubic-bezier(.4,0,.2,1);
  --sidebar:248px;
  --mono:ui-monospace,"SF Mono","JetBrains Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease)}
a:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
::selection{background:rgba(22,194,206,.3);color:var(--text-inv)}
.container{width:100%;max-width:1320px;margin:0 auto;padding:0 48px}
.layout{display:flex;min-height:100vh}

/* ---------- sidebar ---------- */
.sidebar{
  position:fixed;top:0;left:0;z-index:60;
  width:var(--sidebar);height:100vh;
  display:flex;flex-direction:column;
  padding:24px 16px 20px;
  background:#080E1B;
  border-right:1px solid rgba(255,255,255,.08);
  overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:12px;padding:6px 12px 22px;min-height:60px}
.brand:hover{text-decoration:none}
.brand-mark{
  position:relative;flex:0 0 36px;width:36px;height:36px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary) 0%,#0C7F8B 100%);
  box-shadow:0 6px 18px rgba(22,194,206,.35);
}
.brand-mark::after{content:"";position:absolute;inset:9px;border:2px solid rgba(6,11,22,.78);border-radius:6px}
.brand-text{font-size:17px;font-weight:700;color:var(--text-inv);white-space:nowrap}
.side-menu{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  min-height:46px;padding:0 16px;border-radius:var(--r-sm);
  font-size:15px;color:var(--text-2);
  transition:background var(--ease),color var(--ease);
}
.nav-item .ico{flex:0 0 20px;width:20px;height:20px}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text);text-decoration:none}
.nav-item.is-active{background:var(--primary-mist);color:var(--primary)}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
  box-shadow:0 0 12px rgba(22,194,206,.7);
}
.side-foot{margin-top:auto;display:grid;gap:12px;padding-top:20px}
.side-note{font-size:13px;line-height:1.6;color:var(--text-3)}
.side-note strong{color:var(--text-2);font-weight:600}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  border:1px solid transparent;font-size:15px;font-weight:600;
  cursor:pointer;white-space:nowrap;
  transition:background var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease),transform var(--ease),opacity var(--ease);
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--primary);color:#04131A;box-shadow:var(--sh-glow)}
.btn-primary:hover{background:#22CFDB;transform:translateY(-1px);box-shadow:0 10px 30px rgba(22,194,206,.45),inset 0 1px 0 rgba(255,255,255,.25)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:var(--glass-bg);border-color:var(--glass-bd);color:var(--text);backdrop-filter:blur(16px) saturate(140%)}
.btn-ghost:hover{border-color:rgba(22,194,206,.45);color:var(--text-inv);transform:translateY(-1px)}
.btn-block{width:100%}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.btn[disabled]{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}

/* ---------- main ---------- */
.main-wrap{flex:1;min-width:0;margin-left:var(--sidebar);display:flex;flex-direction:column}
.main-body{flex:1}

/* ---------- mobile bar ---------- */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:70;
  align-items:center;justify-content:space-between;
  height:64px;padding:0 20px;
  background:rgba(8,14,27,.9);
  backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-bar .brand{padding:0}
.hamburger{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-sm);
  background:var(--glass-bg);border:1px solid var(--glass-bd);cursor:pointer;
  transition:border-color var(--ease),background var(--ease);
}
.hamburger:hover{border-color:rgba(22,194,206,.45)}
.hamburger svg{width:22px;height:22px}
.drawer-mask{
  position:fixed;inset:0;z-index:80;background:rgba(4,8,16,.72);
  backdrop-filter:blur(4px);opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;z-index:90;
  width:84vw;max-width:340px;height:100vh;
  display:flex;flex-direction:column;gap:6px;
  padding:20px 16px;background:#080E1B;
  border-left:1px solid rgba(255,255,255,.08);
  transform:translateX(102%);
  transition:transform 220ms cubic-bezier(.4,0,.2,1);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer .brand{padding:4px 8px 18px}
.drawer .nav-item{min-height:52px}
.drawer .drawer-foot{margin-top:auto;display:grid;gap:10px;padding-top:20px}

/* ---------- breadcrumb ---------- */
.breadcrumb-wrap{padding:26px 0 0}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);
  white-space:nowrap;overflow:hidden;min-width:0;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(110,124,150,.7)}
.breadcrumb .current{overflow:hidden;text-overflow:ellipsis;color:var(--text-2);max-width:46ch}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;
  margin-top:18px;
  padding:52px 0 46px;
  border-bottom:1px solid rgba(255,255,255,.08);
  background-image:linear-gradient(180deg,rgba(6,11,22,.86) 0%,rgba(6,11,22,.96) 100%),url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center;
}
.article-hero::after{
  content:"";position:absolute;left:0;top:0;width:420px;height:100%;
  background:radial-gradient(closest-side,rgba(22,194,206,.16),transparent);
  pointer-events:none;
}
.article-head{position:relative;z-index:1;max-width:900px;margin:0 auto}
.article-head h1{
  font-size:clamp(30px,4vw,48px);line-height:1.25;font-weight:700;
  color:var(--text-inv);margin:18px 0 0;
}
.article-meta{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  margin-top:22px;font-size:13px;color:var(--text-3);
  padding-top:18px;border-top:1px solid rgba(255,255,255,.08);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta .meta-item svg{width:15px;height:15px}
.article-meta .num{font-family:var(--mono);font-variant-numeric:tabular-nums}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--glass-bg);
  border:1px solid var(--glass-bd);color:var(--primary);
  font-size:12.5px;line-height:1;letter-spacing:.02em;
}
.badge-amber{color:var(--amber);border-color:rgba(255,182,92,.28)}

/* ---------- article body ---------- */
.article-section{padding:64px 0 8px}
.article-body{
  max-width:760px;margin:0 auto;
  font-size:16px;line-height:1.9;color:var(--text);
}
.article-body>*+*{margin-top:1.1em}
.article-body p{margin:0 0 1.1em;color:var(--text-2)}
.article-body h2{
  margin:2em 0 .7em;font-size:clamp(22px,2.2vw,28px);line-height:1.35;
  color:var(--text-inv);letter-spacing:.01em;
}
.article-body h2::after{
  content:"";display:block;width:44px;height:3px;margin-top:12px;
  border-radius:var(--r-pill);background:var(--primary);
  box-shadow:0 0 14px rgba(22,194,206,.5);
}
.article-body h3{margin:1.7em 0 .6em;font-size:20px;font-weight:600;color:var(--text-inv)}
.article-body h4{margin:1.5em 0 .5em;font-size:17px;font-weight:600;color:var(--text)}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:0}
.article-body li{
  position:relative;padding-left:20px;margin:.5em 0;color:var(--text-2);
}
.article-body li::before{
  content:"";position:absolute;left:2px;top:.75em;
  width:6px;height:6px;border-radius:50%;background:var(--primary);
  box-shadow:0 0 8px rgba(22,194,206,.6);
}
.article-body ol{counter-reset:olc}
.article-body ol li{counter-increment:olc;padding-left:30px}
.article-body ol li::before{
  content:counter(olc);top:.35em;left:0;width:auto;height:auto;
  background:none;box-shadow:none;color:var(--primary);
  font-family:var(--mono);font-size:14px;
}
.article-body strong{color:var(--text-inv);font-weight:600}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.article-body a:hover{color:#22CFDB}
.article-body img{
  width:100%;height:auto;border-radius:var(--r-lg);
  border:1px solid var(--glass-bd);box-shadow:var(--sh-card);margin:1.6em 0;
}
.article-body figure{margin:1.8em 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body blockquote{
  margin:1.8em 0;padding:20px 24px;
  background:var(--glass-bg);border:1px solid var(--glass-bd);
  border-left:3px solid var(--primary);border-radius:var(--r-md);
  color:var(--text-2);font-size:15px;line-height:1.85;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body hr{border:0;border-top:1px solid rgba(255,255,255,.10);margin:2.4em 0}
.article-body code{
  font-family:var(--mono);font-size:14px;padding:2px 7px;border-radius:6px;
  background:rgba(255,255,255,.06);border:1px solid var(--glass-bd);color:var(--amber);
}
.article-body pre{
  overflow-x:auto;padding:18px 20px;border-radius:var(--r-md);
  background:#05090F;border:1px solid var(--glass-bd);
}
.article-body pre code{background:none;border:0;padding:0;color:var(--text-2)}
.article-body table{width:100%;border-collapse:collapse;font-size:14px;margin:1.6em 0}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid rgba(255,255,255,.08);text-align:left}
.article-body th{color:var(--text-inv);background:rgba(255,255,255,.03);font-weight:600}
.article-body td{color:var(--text-2)}

/* ---------- empty state ---------- */
.empty-card{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:220px;padding:32px;text-align:center;
  background:var(--glass-bg);border:1px solid var(--glass-bd);
  border-radius:var(--r-lg);backdrop-filter:blur(16px) saturate(140%);
}
.empty-card .empty-ico{
  display:inline-flex;align-items:center;justify-content:center;
  width:52px;height:52px;border-radius:var(--r-md);
  background:var(--primary-mist);border:1px solid rgba(22,194,206,.3);color:var(--primary);
}
.empty-card .empty-ico svg{width:24px;height:24px}
.empty-card h3{font-size:18px;color:var(--text-inv)}
.empty-card p{font-size:14px;color:var(--text-2);max-width:520px}

/* ---------- back link ---------- */
.back-row{display:flex;gap:12px;flex-wrap:wrap;margin:40px 0 0}

/* ---------- section head ---------- */
.section{padding:72px 0}
.section-head{margin-bottom:32px;max-width:760px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;color:var(--text-inv)}
.section-head .sub{margin-top:10px;font-size:14px;color:var(--text-2)}
.divider{height:1px;background:rgba(255,255,255,.08);border:0;margin:0}

/* ---------- recommend cards ---------- */
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rec-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--glass-bg);border:1px solid var(--glass-bd);
  border-radius:var(--r-lg);box-shadow:var(--sh-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.rec-card:hover{transform:translateY(-2px);border-color:rgba(22,194,206,.45);box-shadow:var(--sh-pop);text-decoration:none}
.rec-thumb{position:relative;aspect-ratio:16/9;background:var(--panel);overflow:hidden}
.rec-thumb img{width:100%;height:100%;object-fit:cover}
.rec-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,22,.12),rgba(6,11,22,.55))}
.rec-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rec-body h3{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--text-inv);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rec-card:hover h3{color:var(--primary)}
.rec-body p{
  font-size:14px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rec-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.rec-foot .num{font-family:var(--mono);font-variant-numeric:tabular-nums}
.rec-foot .go{display:inline-flex;align-items:center;gap:6px;color:var(--primary);transition:transform var(--ease)}
.rec-foot .go svg{width:16px;height:16px}
.rec-card:hover .go{transform:translateX(4px)}

/* ---------- cta band ---------- */
.cta-band{
  display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;
  padding:34px 36px;border-radius:var(--r-lg);
  background:linear-gradient(135deg,rgba(22,194,206,.14) 0%,rgba(255,255,255,.04) 60%);
  border:1px solid var(--glass-bd);box-shadow:var(--sh-card);
}
.cta-band h2{font-size:clamp(20px,2vw,26px);color:var(--text-inv)}
.cta-band p{margin-top:10px;font-size:14px;color:var(--text-2);max-width:640px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.footer{margin-top:96px;background:#05090F;border-top:1px solid rgba(255,255,255,.08)}
.foot-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;
  padding:64px 0 40px;
}
.foot-col{display:flex;flex-direction:column;gap:6px;min-width:0}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.foot-brand .brand-mark{flex:0 0 32px;width:32px;height:32px;border-radius:10px}
.foot-brand .brand-text{font-size:16px}
.foot-col h4{
  font-size:14px;font-weight:600;color:var(--text-inv);
  margin-bottom:10px;letter-spacing:.02em;
}
.foot-col p{font-size:14px;line-height:1.9;color:var(--text-3)}
.foot-col a{font-size:14px;color:var(--text-2);line-height:1.9;display:inline-block;transition:color var(--ease),transform var(--ease)}
.foot-col a:hover{color:var(--primary);transform:translateX(2px)}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:var(--text-3);flex-wrap:wrap;
}
.to-top{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-sm);
  background:var(--glass-bg);border:1px solid var(--glass-bd);color:var(--text-2);
  transition:border-color var(--ease),color var(--ease),transform var(--ease);
}
.to-top svg{width:20px;height:20px}
.to-top:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);text-decoration:none}

/* ---------- responsive ---------- */
@media (max-width:1280px) and (min-width:1025px){
  :root{--sidebar:72px}
  .sidebar{padding:20px 10px}
  .brand{justify-content:center;padding:6px 0 20px}
  .brand-text{display:none}
  .nav-item{justify-content:center;padding:0}
  .nav-item .nav-label{display:none}
  .side-foot{display:none}
}
@media (max-width:1024px){
  .sidebar{display:none}
  .main-wrap{margin-left:0}
  .mobile-bar{display:flex}
  .container{padding:0 32px}
  .section{padding:56px 0}
  .article-section{padding:48px 0 8px}
  .article-hero{padding:40px 0 34px}
  .rec-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 32px}
  .footer{margin-top:72px}
}
@media (max-width:768px){
  body{font-size:15px;line-height:1.85}
  .container{padding:0 20px}
  .section{padding:48px 0}
  .breadcrumb-wrap{padding:18px 0 0}
  .breadcrumb .current{max-width:24ch}
  .article-hero{margin-top:14px;padding:32px 0 28px}
  .article-body{font-size:15.5px}
  .rec-grid{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:26px 22px}
  .cta-actions .btn{width:100%}
  .foot-grid{grid-template-columns:1fr;padding:40px 0 28px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .article-head h1{font-size:28px}
  .cta-band{padding:22px 18px}
  .btn{width:100%}
  .back-row .btn{width:100%}
  .rec-body{padding:16px 18px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --bg-0:#060B16;
  --bg-1:#0A1120;
  --bg-2:#0F1830;
  --primary:#16C2CE;
  --primary-dark:#0FA3AF;
  --primary-mist:rgba(22,194,206,.14);
  --accent:#FFB65C;
  --glass-bg:rgba(255,255,255,.055);
  --glass-border:rgba(255,255,255,.10);
  --glass-top:rgba(255,255,255,.16);
  --text-1:#E8EEF7;
  --text-2:#A9B6CC;
  --text-3:#6E7C96;
  --text-inv:#F7FAFF;
  --ok:#38D39F;
  --warn:#FFB65C;
  --err:#FF6B6B;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-card:0 8px 30px rgba(0,0,0,.35);
  --sh-float:0 16px 48px rgba(0,0,0,.45);
  --sh-glow:0 8px 24px rgba(22,194,206,.35), inset 0 1px 0 rgba(255,255,255,.22);
  --t:180ms cubic-bezier(.4,0,.2,1);
  --maxw:1320px;
  --side-w:248px;
  --font-cn:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,"SF Mono","JetBrains Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--text-1);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em}
h1{font-size:clamp(30px,4vw,48px);line-height:1.25}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3}
h3{font-size:20px;line-height:1.45;font-weight:600}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t),opacity var(--t)}
a:hover{text-decoration:underline;text-underline-offset:4px}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- 布局骨架 ---------- */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--side-w);
  background:#080E1B;
  border-right:1px solid rgba(255,255,255,.08);
  display:flex;
  flex-direction:column;
  padding:22px 16px 20px;
  z-index:60;
  transition:transform var(--t),width var(--t);
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:6px 8px 20px;
  border-bottom:1px solid rgba(255,255,255,.07);
  margin-bottom:16px;
}
.brand-mark{
  position:relative;
  width:36px;height:36px;
  flex:0 0 36px;
  border-radius:11px;
  background:linear-gradient(140deg,var(--primary),#0B8B96);
  box-shadow:0 6px 18px rgba(22,194,206,.35);
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:8px;
  border-radius:50%;
  border:2px solid rgba(6,11,22,.72);
  border-top-color:rgba(255,255,255,.85);
}
.brand-text{
  font-size:17px;
  font-weight:700;
  line-height:1.2;
  color:var(--text-inv);
  letter-spacing:.02em;
}
.side-menu{display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto;padding-right:2px}
.nav-item{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:46px;
  padding:0 14px 0 16px;
  border-radius:12px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.35;
  position:relative;
  text-decoration:none;
}
.nav-item:hover{
  background:rgba(255,255,255,.05);
  color:var(--text-inv);
  text-decoration:none;
}
.nav-item .ico{width:20px;height:20px;flex:0 0 20px;color:currentColor}
.nav-item.is-active{
  background:var(--primary-mist);
  color:var(--primary);
  font-weight:600;
}
.nav-item.is-active::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  border-radius:3px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(22,194,206,.8);
}
.nav-item.is-active .ico{filter:drop-shadow(0 0 6px rgba(22,194,206,.6))}
.side-foot{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid rgba(255,255,255,.07);
  display:flex;
  flex-direction:column;
  gap:10px;
}
.side-foot .side-note{font-size:13px;color:var(--text-3);line-height:1.6}
.side-foot .side-note strong{color:var(--text-2);font-weight:600}
.side-cta{width:100%;justify-content:center}

/* ---------- 按钮 / 徽章 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  text-decoration:none;
  transition:background var(--t),border-color var(--t),color var(--t),box-shadow var(--t),transform var(--t);
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{
  background:var(--primary);
  color:#04181B;
  box-shadow:var(--sh-glow);
}
.btn-primary:hover{background:#25D2DE;box-shadow:0 12px 30px rgba(22,194,206,.45),inset 0 1px 0 rgba(255,255,255,.24)}
.btn-ghost{
  background:var(--glass-bg);
  border-color:var(--glass-border);
  color:var(--text-1);
  backdrop-filter:blur(12px);
}
.btn-ghost:hover{border-color:rgba(22,194,206,.55);color:var(--text-inv);background:rgba(22,194,206,.10)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  font-size:12.5px;
  line-height:1;
  color:var(--primary);
  white-space:nowrap;
}
.badge-accent{color:var(--accent)}

/* ---------- 通用容器与板块 ---------- */
.page{margin-left:var(--side-w);min-width:0}
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 48px;
}
.section{padding:96px 0}
.section-alt{background:var(--bg-1)}
.section-head{max-width:760px;margin-bottom:48px}
.section-head .kicker{
  display:inline-block;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--primary);
  margin-bottom:12px;
  font-family:var(--font-mono);
  text-transform:uppercase;
}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:15px;margin:0}
.glass{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  border-top-color:var(--glass-top);
  backdrop-filter:blur(16px) saturate(140%);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-card);
}

/* ---------- 顶栏与抽屉（移动端） ---------- */
.topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:70;
  height:64px;
  align-items:center;
  justify-content:space-between;
  padding:0 20px;
  background:rgba(8,14,27,.88);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.topbar .brand{padding:0;border:0;margin:0}
.burger{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  cursor:pointer;
}
.burger svg{width:22px;height:22px}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(4,8,16,.72);
  backdrop-filter:blur(4px);
  opacity:0;pointer-events:none;
  transition:opacity var(--t);
  z-index:80;
}
.drawer-mask.is-show{opacity:1;pointer-events:auto}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  min-height:60vh;
  display:flex;
  align-items:center;
  border-bottom:1px solid rgba(255,255,255,.06);
  background:var(--bg-0);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  opacity:.42;
}
.hero-bg::after{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(480px 480px at 12% 8%, rgba(22,194,206,.18), transparent 70%),
    linear-gradient(90deg, rgba(6,11,22,.94) 0%, rgba(6,11,22,.72) 46%, rgba(6,11,22,.9) 100%);
}
.hero-grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:40px 40px;
  mask-image:linear-gradient(180deg, rgba(0,0,0,.8), transparent 85%);
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
  align-items:center;
  padding-top:96px;
  padding-bottom:96px;
}
.hero-copy{grid-column:span 6}
.hero-copy h1{margin:18px 0 16px}
.hero-sub{
  font-size:17px;
  color:var(--text-2);
  margin:0 0 28px;
  max-width:30em;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px}
.hero-badges li{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;
  border-radius:var(--r-pill);
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  font-size:13px;
  color:var(--text-2);
}
.hero-badges li::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 8px rgba(22,194,206,.9);
}
.hero-visual{
  grid-column:span 6;
  position:relative;
}
.hero-visual img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--r-lg);
  border:1px solid var(--glass-border);
  box-shadow:var(--sh-float);
  background:linear-gradient(140deg, rgba(22,194,206,.18), rgba(255,182,92,.12));
}
.hero-float{
  position:absolute;
  right:-10px;
  bottom:-26px;
  width:min(280px,80%);
  padding:16px 18px;
  border-radius:var(--r-md);
  background:rgba(10,17,32,.86);
  border:1px solid var(--glass-border);
  border-top-color:var(--glass-top);
  backdrop-filter:blur(16px);
  box-shadow:var(--sh-float);
}
.hero-float .label{font-size:13px;color:var(--text-3);margin-bottom:6px}
.hero-float .value{font-family:var(--font-mono);font-size:26px;color:var(--accent);line-height:1.1}
.hero-float .sub{font-size:13px;color:var(--text-2);margin-top:6px}

/* ---------- 时间轴 ---------- */
.timeline-wrap{
  max-width:900px;
}
.timeline{
  position:relative;
  padding-left:44px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:5px;top:10px;bottom:10px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg, rgba(22,194,206,.85), rgba(22,194,206,.18));
}
.tl-item{position:relative;margin-bottom:40px}
.tl-item:last-child{margin-bottom:0}
.tl-item::before{
  content:"";
  position:absolute;
  left:-44px;
  top:8px;
  width:12px;height:12px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 0 4px rgba(22,194,206,.16), 0 0 18px rgba(22,194,206,.65);
}
.tl-time{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--accent);
  letter-spacing:.04em;
  margin-bottom:6px;
}
.tl-item h3{margin-bottom:8px}
.tl-item p{color:var(--text-2);font-size:15px;margin:0;max-width:52em}
.tl-tag{
  display:inline-block;
  margin-top:12px;
  font-size:12.5px;
  color:var(--primary);
  border:1px solid rgba(22,194,206,.32);
  background:var(--primary-mist);
  border-radius:var(--r-pill);
  padding:3px 12px;
}

/* ---------- 指标卡 ---------- */
.metrics{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.metric{
  padding:28px 24px;
  position:relative;
}
.metric + .metric::before{
  content:"";
  position:absolute;
  left:-10px;top:26px;bottom:26px;
  width:1px;
  background:rgba(255,255,255,.08);
}
.metric .m-ico{
  width:32px;height:32px;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  color:var(--primary);
  margin-bottom:18px;
}
.metric .m-ico svg{width:18px;height:18px}
.metric .m-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(28px,3vw,38px);
  line-height:1.1;
  color:var(--accent);
  letter-spacing:.01em;
}
.metric .m-num small{font-size:14px;margin-left:4px;color:var(--text-3)}
.metric .m-label{font-size:13px;color:var(--text-3);margin-top:10px;line-height:1.7}

/* ---------- 内容卡片网格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  padding:28px 26px;
  border-radius:var(--r-lg);
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  border-top-color:var(--glass-top);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--sh-card);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-float);border-color:rgba(22,194,206,.45)}
.card h3{margin-bottom:10px}
.card p{color:var(--text-2);font-size:14.5px;margin:0}
.card .c-ico{
  width:38px;height:38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-mist);
  border:1px solid rgba(22,194,206,.3);
  color:var(--primary);
  margin-bottom:16px;
}
.card .c-ico svg{width:20px;height:20px}

/* ---------- 对照行 ---------- */
.rows{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--glass-border);
  background:rgba(255,255,255,.02);
}
.row{
  display:grid;
  grid-template-columns:240px 1fr;
  gap:24px;
  align-items:center;
  min-height:56px;
  padding:16px 24px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.row:last-child{border-bottom:0}
.row:nth-child(odd){background:rgba(255,255,255,.02)}
.row .k{font-size:15px;color:var(--text-1);font-weight:600}
.row .v{font-size:14.5px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto}
.faq-item{border-top:1px solid rgba(255,255,255,.1);padding:0}
.faq-item:last-child{border-bottom:1px solid rgba(255,255,255,.1)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 4px;
  font-size:16px;
  font-weight:600;
  color:var(--text-1);
  transition:color var(--t);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-item[open] summary{color:var(--primary)}
.faq-mark{
  position:relative;
  width:20px;height:20px;flex:0 0 20px;
  transition:transform 220ms cubic-bezier(.4,0,.2,1);
}
.faq-mark::before,.faq-mark::after{
  content:"";
  position:absolute;
  background:currentColor;
  border-radius:2px;
}
.faq-mark::before{left:2px;right:2px;top:9px;height:2px}
.faq-mark::after{top:2px;bottom:2px;left:9px;width:2px}
.faq-item[open] .faq-mark::after{transform:scaleY(0)}
.faq-body{padding:0 4px 18px;font-size:14px;line-height:1.8;color:var(--text-2)}

/* ---------- 表单 ---------- */
.form-wrap{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:24px;
  align-items:start;
}
.form-card{padding:32px 30px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;
  min-height:48px;
  padding:12px 14px;
  border-radius:var(--r-sm);
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.12);
  color:var(--text-1);
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.field textarea{min-height:112px;resize:vertical;line-height:1.7}
.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 3px rgba(22,194,206,.18);
  background:rgba(255,255,255,.06);
}
.field.has-error input,.field.has-error textarea,.field.has-error select{border-color:var(--err)}
.field .err-msg{display:none;font-size:12px;color:var(--err);margin-top:6px}
.field.has-error .err-msg{display:block}
.form-note{font-size:12.5px;color:var(--text-3);margin:14px 0 0}
.form-ok{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:18px 20px;
  border-radius:var(--r-md);
  background:rgba(56,211,159,.12);
  border:1px solid rgba(56,211,159,.42);
  color:#C8F5E4;
  font-size:14.5px;
}
.form-ok svg{width:20px;height:20px;flex:0 0 20px;color:var(--ok);margin-top:3px}
.contact-list{display:flex;flex-direction:column;gap:18px;margin-top:24px}
.contact-list li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--text-2)}
.contact-list .ci{
  width:34px;height:34px;flex:0 0 34px;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  color:var(--primary);
}
.contact-list .ci svg{width:17px;height:17px}
.contact-list strong{display:block;color:var(--text-1);font-weight:600;font-size:14.5px;margin-bottom:2px}

/* ---------- CTA 条 ---------- */
.cta-band{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:40px 44px;
  border-radius:var(--r-lg);
  background:linear-gradient(120deg, rgba(22,194,206,.16), rgba(15,24,48,.9) 55%);
  border:1px solid rgba(22,194,206,.28);
  box-shadow:var(--sh-card);
}
.cta-band h2{font-size:clamp(22px,2.2vw,28px);margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:14.5px;margin:0}
.cta-band .cta-actions{display:flex;gap:14px;flex-shrink:0}

/* ---------- 页脚 ---------- */
.footer{
  background:#05090F;
  border-top:1px solid rgba(255,255,255,.08);
  padding:64px 0 0;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:48px;
}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.foot-brand .brand-mark{width:32px;height:32px;flex:0 0 32px;border-radius:10px}
.foot-brand .brand-text{font-size:16px}
.foot-col p{font-size:13.5px;color:var(--text-3);line-height:1.9;margin:0 0 6px}
.foot-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;font-weight:600}
.foot-col a{
  display:block;
  font-size:13.5px;
  color:var(--text-2);
  line-height:1.9;
  margin-bottom:8px;
  transition:color var(--t),transform var(--t);
}
.foot-col a:hover{color:var(--primary);text-decoration:none;transform:translateX(2px)}
.foot-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 0 28px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;
  color:var(--text-3);
}
.to-top{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  color:var(--text-2);
}
.to-top svg{width:18px;height:18px}
.to-top:hover{border-color:rgba(22,194,206,.55);color:var(--primary);text-decoration:none}

/* ---------- 响应式 ---------- */
@media (max-width:1440px){
  .container{padding:0 40px}
}
@media (max-width:1279px){
  .sidebar{width:72px;padding:22px 12px 20px}
  .brand{justify-content:center;padding:6px 0 20px}
  .brand-text{display:none}
  .nav-item{justify-content:center;padding:0;font-size:0;gap:0}
  .nav-item.is-active::before{top:8px;bottom:8px}
  .side-foot .side-note,.side-foot .side-cta .btn-text{display:none}
  .side-cta{padding:0;min-height:44px}
  .page{margin-left:72px}
}
@media (max-width:1024px){
  .topbar{display:flex}
  .sidebar{
    width:84vw;
    max-width:340px;
    transform:translateX(-102%);
    padding:22px 16px 20px;
    box-shadow:var(--sh-float);
  }
  .sidebar.is-open{transform:translateX(0)}
  .brand{justify-content:flex-start;padding:6px 8px 20px}
  .brand-text{display:block}
  .nav-item{justify-content:flex-start;padding:0 14px 0 16px;font-size:15px;gap:10px;min-height:52px}
  .side-foot .side-note,.side-foot .side-cta .btn-text{display:block}
  .side-cta{padding:0 26px;min-height:48px}
  .page{margin-left:0}
  .container{padding:0 32px}
  .section{padding:72px 0}
  .hero-inner{grid-template-columns:1fr;padding-top:64px;padding-bottom:72px}
  .hero-copy,.hero-visual{grid-column:span 12}
  .hero-visual{margin-top:16px}
  .hero-float{position:static;width:100%;margin-top:16px;right:auto;bottom:auto}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metric + .metric::before{display:none}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .form-wrap{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
  .cta-band .cta-actions{width:100%}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:48px 0}
  .hero-bg::after{background:linear-gradient(180deg, rgba(6,11,22,.86) 0%, rgba(6,11,22,.94) 100%)}
  .hero-grid{display:none}
  h1{font-size:clamp(26px,7vw,34px)}
  h2{font-size:clamp(21px,5.4vw,27px)}
  .hero-sub{font-size:15.5px}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr}
  .timeline{padding-left:32px}
  .timeline::before{left:3px}
  .tl-item::before{left:-32px;top:7px}
  .tl-item{margin-bottom:32px}
  .row{grid-template-columns:1fr;gap:6px;padding:14px 18px}
  .form-card{padding:24px 20px}
  .foot-grid{grid-template-columns:1fr;gap:24px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:14px}
}
@media (max-width:480px){
  .container{padding:0 16px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .btn{width:100%}
  .cta-band .cta-actions{flex-direction:column}
  .faq-item summary{padding:16px 2px}
  .faq-body{padding:0 2px 16px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --bg:#060B16;
  --bg-alt:#0A1120;
  --panel:#0F1830;
  --primary:#16C2CE;
  --primary-dark:#0FA3AF;
  --primary-mist:rgba(22,194,206,.14);
  --accent:#FFB65C;
  --glass:rgba(255,255,255,.055);
  --glass-border:rgba(255,255,255,.10);
  --glass-top:rgba(255,255,255,.16);
  --text:#E8EEF7;
  --text-2:#A9B6CC;
  --text-3:#6E7C96;
  --white:#F7FAFF;
  --ok:#38D39F;
  --warn:#FFB65C;
  --err:#FF6B6B;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --shadow-card:0 8px 30px rgba(0,0,0,.35);
  --shadow-float:0 16px 48px rgba(0,0,0,.45);
  --shadow-glow:0 8px 24px rgba(22,194,206,.35), inset 0 1px 0 rgba(255,255,255,.22);
  --ease:cubic-bezier(.4,0,.2,1);
  --sidebar:248px;
  --font-cn:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,"SF Mono","JetBrains Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease)}
a:hover{text-decoration:underline;text-underline-offset:4px}
a.btn:hover,a.nav-item:hover,a.card-link:hover,a.bigcard:hover,a.to-top:hover{text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1320px;margin:0 auto;padding:0 48px}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:12px}
.sec-head p{color:var(--text-2);font-size:15px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--primary);letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary);opacity:.7}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;background:var(--glass);border:1px solid var(--glass-border);
  font-size:12.5px;color:var(--primary);white-space:nowrap;
}
.badge.amber{color:var(--accent)}
.badge.solid{background:var(--primary-mist);border-color:rgba(22,194,206,.35)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease),transform 180ms var(--ease),color 180ms var(--ease);
}
.btn-primary{background:var(--primary);color:#04141a;box-shadow:var(--shadow-glow)}
.btn-primary:hover{background:#1fd2de;box-shadow:0 10px 30px rgba(22,194,206,.48),inset 0 1px 0 rgba(255,255,255,.25)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:var(--glass);border-color:var(--glass-border);color:var(--text);backdrop-filter:blur(6px)}
.btn-ghost:hover{border-color:rgba(22,194,206,.55);color:var(--white)}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none}

/* ---------- 侧栏 ---------- */
.sidebar{
  position:fixed;top:0;bottom:0;left:0;width:var(--sidebar);
  background:#080E1B;border-right:1px solid rgba(255,255,255,.08);
  display:flex;flex-direction:column;padding:24px 16px 20px;z-index:70;
}
.brand{display:flex;align-items:center;gap:12px;padding:4px 8px 22px;border-bottom:1px solid rgba(255,255,255,.06);margin-bottom:18px}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;position:relative;
  background:linear-gradient(135deg,var(--primary),#0a7b85);
  clip-path:polygon(0 9px,9px 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%);
  box-shadow:0 6px 18px rgba(22,194,206,.35);
}
.brand-mark::after{
  content:"";position:absolute;inset:10px;border:2px solid rgba(6,11,22,.55);border-radius:50%;
}
.brand-text{font-size:17px;font-weight:700;color:var(--white);letter-spacing:.02em}
.side-menu{display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto;padding-right:2px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:46px;padding:0 12px 0 16px;border-radius:10px;
  color:var(--text-2);font-size:15px;min-height:44px;
}
.nav-item .ico{width:20px;height:20px;flex:0 0 20px}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text)}
.nav-item.is-active{background:var(--primary-mist);color:var(--primary)}
.nav-item.is-active .ico{filter:drop-shadow(0 0 6px rgba(22,194,206,.75))}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:999px;
  background:var(--primary);box-shadow:0 0 12px rgba(22,194,206,.85);
}
.side-foot{border-top:1px solid rgba(255,255,255,.08);padding-top:16px;margin-top:16px}
.side-foot .btn{height:46px;font-size:14.5px;padding:0 16px}
.side-note{font-size:12.5px;color:var(--text-3);margin-top:12px;line-height:1.7}
.side-note.dim{color:#4d5a72}

/* ---------- 移动顶栏与抽屉 ---------- */
.topbar{display:none}
.drawer,.drawer-mask{display:none}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;border-bottom:1px solid rgba(255,255,255,.07);
  padding:88px 0 72px;background:var(--bg);
}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.42;
}
.hero-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,22,.72),rgba(6,11,22,.94))}
.hero-glow{
  position:absolute;top:-120px;left:-80px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(22,194,206,.20),transparent 68%);pointer-events:none;
}
.hero-grid-lines{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:40px 40px;
}
.page-hero .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px}
.crumb a:hover{color:var(--primary)}
.crumb .sep{opacity:.5}
.page-hero h1{font-size:clamp(30px,4vw,48px);line-height:1.25;max-width:920px;margin-bottom:18px}
.page-hero .hero-sub{font-size:16px;color:var(--text-2);max-width:720px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-figure{
  position:relative;margin-top:44px;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--glass-border);box-shadow:var(--shadow-card);aspect-ratio:16/6;
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure .fig-veil{position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,11,22,.82),rgba(6,11,22,.18))}

/* ---------- 两列大图卡 ---------- */
.bigcards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.bigcard{
  position:relative;display:block;height:320px;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--glass-border);box-shadow:var(--shadow-card);
  transition:border-color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.bigcard img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.bigcard .card-veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,22,.22) 0%,rgba(6,11,22,.52) 52%,rgba(6,11,22,.88) 100%);
  transition:background 220ms var(--ease);
}
.bigcard-body{position:absolute;left:26px;right:26px;bottom:24px;z-index:2;transition:transform 220ms var(--ease)}
.bigcard-body h3{font-size:20px;margin-bottom:8px;color:var(--white)}
.bigcard-body p{font-size:14px;color:var(--text-2);max-width:520px}
.bigcard-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.bigcard-meta span{font-family:var(--font-mono);font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}
.bigcard:hover{border-color:rgba(22,194,206,.45);transform:translateY(-2px);box-shadow:var(--shadow-float)}
.bigcard:hover img{transform:scale(1.035)}
.bigcard:hover .card-veil{background:linear-gradient(180deg,rgba(6,11,22,.10) 0%,rgba(6,11,22,.42) 52%,rgba(6,11,22,.86) 100%)}
.bigcard:hover .bigcard-body{transform:translateY(-4px)}
.bigcard-onbody{position:absolute;top:22px;left:26px;z-index:2}

/* ---------- 指标卡 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric{
  padding:28px 24px;border-radius:var(--r-lg);background:var(--glass);
  border:1px solid var(--glass-border);backdrop-filter:blur(16px) saturate(140%);
  position:relative;box-shadow:var(--shadow-card);
}
.metric::before{
  content:"";position:absolute;top:0;left:24px;right:24px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}
.metric-ico{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
  background:rgba(255,255,255,.06);border:1px solid var(--glass-border);color:var(--primary);margin-bottom:18px;
}
.metric-ico svg{width:18px;height:18px}
.metric-val{display:flex;align-items:baseline;gap:4px}
.metric-num{
  font-family:var(--font-mono);font-size:clamp(32px,3.4vw,44px);font-weight:600;line-height:1;
  color:var(--accent);font-variant-numeric:tabular-nums;
}
.metric-unit{font-size:13px;color:var(--accent);opacity:.85}
.metric-note{font-size:13px;color:var(--text-3);margin-top:12px;line-height:1.7}

/* ---------- 准备清单 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.check-item{
  display:flex;gap:14px;padding:22px;border-radius:var(--r-md);
  background:rgba(255,255,255,.03);border:1px solid var(--glass-border);
  transition:border-color 180ms var(--ease),background 180ms var(--ease);
}
.check-item:hover{border-color:rgba(22,194,206,.45);background:rgba(255,255,255,.05)}
.check-ico{
  width:26px;height:26px;flex:0 0 26px;border-radius:8px;display:grid;place-items:center;
  background:var(--primary-mist);color:var(--primary);margin-top:2px;
}
.check-ico svg{width:16px;height:16px}
.check-item h3{font-size:15.5px;margin-bottom:6px}
.check-item p{font-size:14px;color:var(--text-2)}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  position:relative;padding:26px 22px;border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  border:1px solid var(--glass-border);
}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;height:26px;padding:0 12px;
  border-radius:999px;background:var(--primary-mist);color:var(--primary);
  font-family:var(--font-mono);font-size:13px;margin-bottom:16px;
}
.step h3{font-size:16.5px;margin-bottom:10px}
.step p{font-size:14px;color:var(--text-2)}
.step:not(:last-child)::after{
  content:"";position:absolute;top:39px;right:-12px;width:24px;height:1px;background:rgba(22,194,206,.35);
}

/* ---------- 参数对照 ---------- */
.spec{
  border:1px solid var(--glass-border);border-radius:var(--r-lg);overflow:hidden;
  background:var(--glass);backdrop-filter:blur(16px) saturate(140%);
}
.spec-row{display:grid;grid-template-columns:240px 1fr;align-items:center;gap:24px;padding:22px 26px;min-height:56px}
.spec-row + .spec-row{border-top:1px solid rgba(255,255,255,.07)}
.spec-row:nth-child(odd){background:rgba(255,255,255,.02)}
.spec-key{font-size:14px;color:var(--text-3)}
.spec-val{font-size:14.5px;color:var(--text);font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.spec-val.text{font-family:var(--font-cn)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq{border-top:1px solid rgba(255,255,255,.09)}
.faq details{border-bottom:1px solid rgba(255,255,255,.09)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 0;font-size:16px;font-weight:600;color:var(--text);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--primary)}
.faq summary::after{
  content:"+";font-size:20px;line-height:1;color:var(--text-3);
  transition:transform 220ms var(--ease),color 220ms var(--ease);
}
.faq details[open] summary::after{transform:rotate(45deg);color:var(--primary)}
.faq-a{padding:0 0 18px;font-size:14px;line-height:1.8;color:var(--text-2);max-width:720px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;
  border:1px solid rgba(22,194,206,.28);
  background:linear-gradient(120deg,rgba(22,194,206,.16),rgba(15,24,48,.9) 58%);
  padding:48px;
  display:grid;grid-template-columns:1.4fr .8fr;gap:32px;align-items:center;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:12px}
.cta-band p{color:var(--text-2);font-size:15px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-lines{display:flex;flex-direction:column;gap:12px;margin-top:18px}
.cta-line{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-2)}
.cta-line svg{width:18px;height:18px;color:var(--primary);flex:0 0 18px}

/* ---------- 图片降级 ---------- */
.img-error{background:linear-gradient(135deg,rgba(22,194,206,.22),rgba(255,182,92,.16))}

/* ---------- 页脚 ---------- */
.footer{background:#05090F;border-top:1px solid rgba(255,255,255,.08);padding:64px 0 28px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.foot-brand .brand-text{font-size:16px}
.foot-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.foot-col p{font-size:14px;color:var(--text-2);line-height:1.9}
.foot-col a{display:block;font-size:14px;color:var(--text-2);line-height:1.9;transition:color 180ms var(--ease),transform 180ms var(--ease)}
.foot-col a:hover{color:var(--primary);transform:translateX(2px);text-decoration:underline;text-underline-offset:4px}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:var(--text-3);
}
.to-top{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;flex:0 0 44px;
  background:var(--glass);border:1px solid var(--glass-border);color:var(--text-2);
}
.to-top svg{width:18px;height:18px}
.to-top:hover{border-color:var(--primary);color:var(--primary)}

/* ---------- 响应式 ---------- */
@media (min-width:1025px){
  body{padding-left:var(--sidebar)}
}
@media (max-width:1280px){
  .container{padding:0 32px}
}
@media (max-width:1024px){
  .sidebar{display:none}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    position:sticky;top:0;z-index:60;height:64px;padding:0 20px;
    background:rgba(8,14,27,.9);backdrop-filter:blur(16px) saturate(140%);
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .topbar .brand{padding:0;border:0;margin:0}
  .menu-btn{
    width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
    background:var(--glass);border:1px solid var(--glass-border);color:var(--text);
  }
  .menu-btn svg{width:20px;height:20px}
  .drawer-mask{
    display:block;position:fixed;inset:0;z-index:80;background:rgba(4,8,16,.72);
    backdrop-filter:blur(4px);opacity:0;visibility:hidden;transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
  }
  .drawer{
    display:flex;flex-direction:column;position:fixed;top:0;right:0;bottom:0;z-index:90;
    width:84vw;max-width:340px;padding:20px 16px 24px;background:#080E1B;
    border-left:1px solid rgba(255,255,255,.08);transform:translateX(100%);
    transition:transform 260ms var(--ease);overflow-y:auto;
  }
  body.drawer-open .drawer{transform:translateX(0)}
  body.drawer-open .drawer-mask{opacity:1;visibility:visible}
  .drawer .nav-item{height:52px}
  .drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid rgba(255,255,255,.08)}
  .section{padding:72px 0}
  .page-hero{padding:64px 0 56px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step:not(:last-child)::after{display:none}
  .cta-band{grid-template-columns:1fr;padding:36px}
  .cta-actions{justify-content:flex-start}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:48px 0}
  .sec-head{margin-bottom:32px}
  .bigcards{grid-template-columns:1fr}
  .bigcard{height:280px}
  .check-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .spec-row{grid-template-columns:1fr;gap:6px;align-items:start;padding:18px 20px}
  .hero-figure{aspect-ratio:16/9}
  .page-hero h1{font-size:clamp(26px,6vw,34px)}
  .foot-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  body{font-size:15px}
  .metrics{grid-template-columns:1fr}
  .hero-actions .btn,.cta-actions .btn{width:100%}
  .cta-band{padding:26px 20px}
  .page-hero{padding:48px 0 40px}
  .bigcard-body{left:18px;right:18px;bottom:18px}
  .faq summary{font-size:15px;padding:16px 0}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:14px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --bg:#060B16;
  --bg-alt:#0A1120;
  --panel:#0F1830;
  --primary:#16C2CE;
  --primary-dark:#0FA3AF;
  --primary-mist:rgba(22,194,206,.14);
  --amber:#FFB65C;
  --glass:rgba(255,255,255,.055);
  --glass-border:rgba(255,255,255,.10);
  --glass-top:rgba(255,255,255,.16);
  --text:#E8EEF7;
  --text-2:#A9B6CC;
  --text-3:#6E7C96;
  --white:#F7FAFF;
  --ok:#38D39F;
  --err:#FF6B6B;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-card:0 8px 30px rgba(0,0,0,.35);
  --sh-float:0 16px 48px rgba(0,0,0,.45);
  --sh-glow:0 8px 24px rgba(22,194,206,.35), inset 0 1px 0 rgba(255,255,255,.22);
  --t:180ms cubic-bezier(.4,0,.2,1);
  --sidebar:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{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;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
a:hover{text-decoration:underline;text-underline-offset:4px;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;}
h1{font-size:clamp(30px,4vw,48px);line-height:1.25;}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;}
h3{font-size:20px;line-height:1.45;font-weight:600;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
::selection{background:rgba(22,194,206,.35);color:var(--white);}
.num-font{font-family:ui-monospace,"SF Mono","JetBrains Mono",monospace;font-variant-numeric:tabular-nums;}

/* ============ 布局骨架 ============ */
.layout-body{min-height:100vh;}

/* ============ 左侧导航 ============ */
.sidebar{
  position:fixed;
  left:0;top:0;
  width:var(--sidebar);
  height:100vh;
  background:#080E1B;
  border-right:1px solid rgba(255,255,255,.08);
  display:flex;
  flex-direction:column;
  padding:24px 16px 18px;
  z-index:60;
}
.sidebar::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:120px;
  background:linear-gradient(180deg,rgba(8,14,27,0) 0%,rgba(8,14,27,.95) 70%);
  pointer-events:none;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:6px 8px 22px;
}
.brand-mark{
  position:relative;
  width:36px;height:36px;flex:0 0 36px;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  clip-path:polygon(24% 0,100% 0,100% 76%,76% 100%,0 100%,0 24%);
  box-shadow:0 6px 18px rgba(22,194,206,.35);
}
.brand-mark::after{
  content:"";
  position:absolute;inset:10px;
  border:2px solid rgba(6,11,22,.85);
  border-radius:50%;
}
.brand-text{
  font-size:17px;
  font-weight:700;
  color:var(--white);
  letter-spacing:.02em;
}
.side-menu{display:flex;flex-direction:column;gap:4px;position:relative;z-index:2;}
.nav-item{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:46px;
  padding:0 16px;
  border-radius:var(--r-sm);
  color:var(--text-2);
  font-size:15px;
  line-height:1.4;
  position:relative;
  transition:background var(--t),color var(--t);
}
.nav-item .ico{width:20px;height:20px;flex:0 0 20px;}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--white);text-decoration:none;}
.nav-item.is-active{
  background:rgba(22,194,206,.12);
  color:var(--primary);
  font-weight:600;
}
.nav-item.is-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(22,194,206,.6);
}
.nav-item.is-active .ico{filter:drop-shadow(0 0 6px rgba(22,194,206,.55));}
.side-foot{
  margin-top:auto;
  position:relative;
  z-index:2;
  padding-top:18px;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.side-note{
  font-size:13px;
  color:var(--text-3);
  line-height:1.6;
  padding:0 4px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  transition:background var(--t),border-color var(--t),color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-primary{
  background:var(--primary);
  color:#04222A;
  box-shadow:var(--sh-glow);
}
.btn-primary:hover{background:#22D2DE;box-shadow:0 10px 30px rgba(22,194,206,.45),inset 0 1px 0 rgba(255,255,255,.3);text-decoration:none;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:var(--glass);
  border:1px solid var(--glass-border);
  color:var(--text);
}
.btn-ghost:hover{border-color:rgba(22,194,206,.45);color:var(--white);text-decoration:none;transform:translateY(-1px);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;}

/* ============ 移动端顶栏与抽屉 ============ */
.mobile-bar{
  display:none;
  position:sticky;top:0;z-index:70;
  height:64px;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  background:rgba(8,14,27,.92);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-bar .brand{padding:0;gap:10px;}
.mobile-bar .brand-mark{width:32px;height:32px;flex:0 0 32px;}
.drawer-toggle{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-sm);
  border:1px solid var(--glass-border);
  background:var(--glass);
  color:var(--text);
}
.drawer-toggle svg{width:22px;height:22px;}
.drawer-mask{
  display:none;
  position:fixed;inset:0;
  background:rgba(4,8,16,.72);
  backdrop-filter:blur(4px);
  z-index:80;
}
.drawer-mask.is-open{display:block;}
.drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:84vw;max-width:340px;
  background:#080E1B;
  border-left:1px solid rgba(255,255,255,.08);
  z-index:90;
  transform:translateX(104%);
  transition:transform 220ms cubic-bezier(.4,0,.2,1);
  display:flex;
  flex-direction:column;
  padding:18px 16px 24px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 4px 18px;}
.drawer-close{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-sm);
  border:1px solid var(--glass-border);
  background:var(--glass);
}
.drawer-close svg{width:20px;height:20px;}
.drawer .nav-item{min-height:52px;font-size:16px;}
.drawer-foot{margin-top:auto;padding-top:20px;display:flex;flex-direction:column;gap:12px;}

/* ============ 内容区 ============ */
.site-main{margin-left:var(--sidebar);}
.container{
  width:100%;
  max-width:1320px;
  margin:0 auto;
  padding:0 48px;
}

/* ============ Hero ============ */
.hero{
  position:relative;
  min-height:76vh;
  display:flex;
  align-items:center;
  padding:88px 0 72px;
  overflow:hidden;
  background:#050A14;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.55;
}
.hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,20,.86) 0%,rgba(6,11,22,.94) 100%);
}
.hero-glow{
  position:absolute;
  top:-140px;left:-120px;
  width:480px;height:480px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(22,194,206,.18) 0%,rgba(22,194,206,0) 68%);
  pointer-events:none;
}
.hero-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:40px 40px;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
  align-items:center;
  width:100%;
}
.hero-copy{grid-column:span 6;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:28px;
  padding:0 14px;
  margin-bottom:20px;
  border-radius:var(--r-pill);
  background:var(--glass);
  border:1px solid var(--glass-border);
  font-size:13px;
  color:var(--primary);
  letter-spacing:.04em;
}
.hero h1{color:var(--white);margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--primary);}
.lede{
  font-size:17px;
  color:var(--text-2);
  max-width:520px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;}
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--glass);
  border:1px solid var(--glass-border);
  font-size:13px;
  color:var(--text-2);
  white-space:nowrap;
}
.hero-panel{grid-column:span 6;}
.panel{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-top-color:var(--glass-top);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-float);
  backdrop-filter:blur(16px) saturate(140%);
  padding:26px;
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;}
.panel-title{font-size:15px;font-weight:600;color:var(--white);}
.pill{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  border:1px solid rgba(56,211,159,.4);
  background:rgba(56,211,159,.12);
  color:var(--ok);
}
.panel-list{display:flex;flex-direction:column;}
.panel-list li{
  display:flex;align-items:center;gap:10px;
  padding:13px 0;
  border-bottom:1px solid rgba(255,255,255,.07);
  font-size:14px;
  color:var(--text-2);
}
.panel-list li:last-child{border-bottom:0;}
.dot{
  width:8px;height:8px;flex:0 0 8px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(22,194,206,.7);
}
.panel-val{margin-left:auto;color:var(--text);font-size:13px;}
.panel-foot{
  margin-top:16px;
  font-size:13px;
  color:var(--text-3);
  line-height:1.7;
}

/* ============ 通用板块 ============ */
.section{padding:96px 0;position:relative;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .tag{
  display:inline-block;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--primary);
  margin-bottom:12px;
}
.section-sub{
  margin-top:12px;
  font-size:15px;
  color:var(--text-2);
  max-width:600px;
}

/* ============ 编号清单 ============ */
.numlist{
  max-width:960px;
  border-top:1px solid rgba(255,255,255,.08);
}
.num-item{
  display:grid;
  grid-template-columns:48px 1fr 28px;
  gap:20px;
  align-items:start;
  padding:24px 8px;
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background var(--t),border-color var(--t);
}
.num-item:hover{background:rgba(255,255,255,.025);border-bottom-color:rgba(22,194,206,.35);text-decoration:none;}
.num{
  font-family:ui-monospace,"SF Mono","JetBrains Mono",monospace;
  font-size:24px;
  font-weight:700;
  line-height:1.2;
  color:var(--primary);
  opacity:.6;
  font-variant-numeric:tabular-nums;
}
.num-item:hover .num{opacity:1;}
.num-body h3{color:var(--white);margin-bottom:6px;}
.num-body p{font-size:14px;color:var(--text-2);line-height:1.75;max-width:760px;}
.num-arrow{
  width:22px;height:22px;
  color:var(--text-3);
  margin-top:4px;
  transition:transform var(--t),color var(--t);
}
.num-item:hover .num-arrow{transform:translateX(4px);color:var(--primary);}

/* ============ 卡片网格 ============ */
.mode-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.card{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-top-color:var(--glass-top);
  border-radius:var(--r-lg);
  padding:28px 24px;
  box-shadow:var(--sh-card);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.card:hover{transform:translateY(-2px);border-color:rgba(22,194,206,.45);box-shadow:var(--sh-float);}
.card-icon{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--r-md);
  background:var(--primary-mist);
  border:1px solid rgba(22,194,206,.28);
  color:var(--primary);
  margin-bottom:18px;
}
.card-icon svg{width:22px;height:22px;}
.card h3{color:var(--white);margin-bottom:10px;}
.card p{font-size:14px;color:var(--text-2);line-height:1.8;}

/* ============ 图文分栏 ============ */
.split{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
  align-items:center;
}
.split-media{
  grid-column:span 6;
  margin:0;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--glass-border);
  box-shadow:var(--sh-card);
  aspect-ratio:16/9;
  background:linear-gradient(135deg,rgba(22,194,206,.18),rgba(255,182,92,.14));
}
.split-media img{width:100%;height:100%;object-fit:cover;}
.split-copy{grid-column:span 6;}
.split-copy h2{margin-bottom:14px;}
.split-copy p{font-size:15px;color:var(--text-2);}
.step-mini{display:flex;flex-direction:column;gap:14px;margin-top:22px;}
.step-mini li{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--text-2);}
.step-index{
  flex:0 0 26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  border-radius:8px;
  background:var(--primary-mist);
  color:var(--primary);
  font-size:12px;
  font-family:ui-monospace,"SF Mono","JetBrains Mono",monospace;
}

/* ============ 数据指标 ============ */
.metrics{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.metric{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-top-color:var(--glass-top);
  border-radius:var(--r-lg);
  padding:28px 24px;
  box-shadow:var(--sh-card);
  position:relative;
}
.metric-icon{
  width:32px;height:32px;
  display:flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--glass-border);
  color:var(--primary);
  margin-bottom:18px;
}
.metric-icon svg{width:18px;height:18px;}
.metric-num{
  font-family:ui-monospace,"SF Mono","JetBrains Mono",monospace;
  font-size:clamp(28px,3vw,40px);
  font-weight:700;
  color:var(--amber);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.metric-num sup{font-size:13px;color:var(--text-2);margin-left:4px;top:-1.1em;}
.metric-label{margin-top:10px;font-size:13px;color:var(--text-3);line-height:1.6;}

/* ============ FAQ ============ */
.faq{max-width:820px;margin:0 auto;}
.faq-item{border-top:1px solid rgba(255,255,255,.1);}
.faq-item:last-child{border-bottom:1px solid rgba(255,255,255,.1);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 4px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--white);
  transition:color var(--t);
}
.faq-q:hover{color:var(--primary);}
.faq-icon{
  width:20px;height:20px;
  flex:0 0 20px;
  color:var(--text-2);
  transition:transform 220ms cubic-bezier(.4,0,.2,1),color var(--t);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);color:var(--primary);}
.faq-item.is-open .faq-q{color:var(--primary);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 220ms cubic-bezier(.4,0,.2,1);
}
.faq-a p{
  padding:0 4px 18px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.85;
  max-width:700px;
}

/* ============ 转化表单 ============ */
.cta-band{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
  align-items:start;
}
.form-card{
  grid-column:span 7;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-top-color:var(--glass-top);
  border-radius:var(--r-lg);
  padding:32px;
  box-shadow:var(--sh-card);
  backdrop-filter:blur(16px) saturate(140%);
}
.info-col{grid-column:span 5;display:flex;flex-direction:column;gap:16px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.input{
  width:100%;
  height:48px;
  padding:0 14px;
  border-radius:var(--r-sm);
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.12);
  color:var(--text);
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
textarea.input{height:auto;min-height:118px;padding:12px 14px;resize:vertical;line-height:1.7;}
select.input{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.input:focus{
  outline:none;
  border-color:var(--primary);
  background:rgba(22,194,206,.05);
  box-shadow:0 0 0 3px rgba(22,194,206,.18);
}
.input::placeholder{color:var(--text-3);}
.form-hint{font-size:12px;color:var(--text-3);margin-top:10px;}
.form-msg{display:none;margin-top:16px;padding:14px 16px;border-radius:var(--r-sm);font-size:14px;}
.form-msg.is-ok{display:block;background:rgba(56,211,159,.12);border:1px solid rgba(56,211,159,.4);color:var(--ok);}
.form-msg.is-err{display:block;background:rgba(255,107,107,.1);border:1px solid rgba(255,107,107,.4);color:var(--err);}
.info-card{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-top-color:var(--glass-top);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--sh-card);
}
.info-card h3{font-size:16px;color:var(--white);margin-bottom:14px;}
.info-row{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--text-2);padding:9px 0;}
.info-row svg{width:18px;height:18px;flex:0 0 18px;color:var(--primary);margin-top:4px;}
.link-inline{color:var(--primary);}

/* ============ 页脚 ============ */
.footer{
  margin-left:var(--sidebar);
  background:#05090F;
  border-top:1px solid rgba(255,255,255,.08);
  padding:64px 0 24px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:32px;
}
.foot-col h4{font-size:15px;color:var(--white);margin-bottom:16px;}
.foot-col a{
  display:block;
  font-size:14px;
  color:var(--text-2);
  line-height:1.9;
  transition:color var(--t),transform var(--t);
}
.foot-col a:hover{color:var(--primary);transform:translateX(2px);text-decoration:underline;}
.foot-col p{font-size:14px;color:var(--text-2);line-height:1.9;}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.foot-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;}
.foot-brand .brand-text{font-size:16px;color:var(--white);font-weight:700;}
.foot-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:var(--text-3);
}
.to-top{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--glass);
  border:1px solid var(--glass-border);
  color:var(--text-2);
  transition:border-color var(--t),color var(--t),transform var(--t);
}
.to-top:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);text-decoration:none;}
.to-top svg{width:18px;height:18px;}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .container{padding:0 32px;}
  .mode-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:1024px){
  :root{--sidebar:0px;}
  .sidebar{display:none;}
  .mobile-bar{display:flex;}
  .site-main{margin-left:0;}
  .footer{margin-left:0;}
  .container{padding:0 32px;}
  .section{padding:72px 0;}
  .hero{min-height:auto;padding:64px 0 56px;}
  .hero-glow,.hero-grid{display:none;}
  .hero-inner{grid-template-columns:1fr;gap:32px;}
  .hero-copy,.hero-panel{grid-column:auto;}
  .mode-grid{grid-template-columns:repeat(2,1fr);}
  .split-media,.split-copy{grid-column:auto;}
  .split{grid-template-columns:1fr;gap:32px;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1fr 1fr;}
  .form-card,.info-col{grid-column:auto;}
  .cta-band{grid-template-columns:1fr;}
}
@media (max-width:768px){
  body{font-size:15px;}
  .container{padding:0 20px;}
  .section{padding:48px 0;}
  .hero{padding:52px 0 44px;}
  .hero h1{font-size:30px;}
  .lede{font-size:15px;}
  .num-item{grid-template-columns:36px 1fr 22px;gap:14px;padding:20px 4px;}
  .num{font-size:20px;}
  .num-body h3{font-size:17px;}
  .mode-grid{grid-template-columns:1fr;}
  .metrics{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:480px){
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .panel{padding:20px;}
  .form-card{padding:22px;}
  .faq-q{font-size:15px;}
}

/* roulang page: category4 */
:root{
  --bg:#060B16;
  --bg-alt:#0A1120;
  --panel:#0F1830;
  --primary:#16C2CE;
  --primary-dark:#0FA3AF;
  --primary-mist:rgba(22,194,206,.14);
  --amber:#FFB65C;
  --glass:rgba(255,255,255,.055);
  --glass-bd:rgba(255,255,255,.10);
  --glass-top:rgba(255,255,255,.16);
  --text:#E8EEF7;
  --text-2:#A9B6CC;
  --text-3:#6E7C96;
  --text-inv:#F7FAFF;
  --ok:#38D39F;
  --warn:#FFB65C;
  --err:#FF6B6B;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --sh-card:0 8px 30px rgba(0,0,0,.35);
  --sh-pop:0 16px 48px rgba(0,0,0,.45);
  --glow:0 8px 24px rgba(22,194,206,.35);
  --ease:cubic-bezier(.4,0,.2,1);
  --font-cn:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,"SF Mono","JetBrains Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease)}
a:hover{text-decoration:underline;text-underline-offset:4px}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.01em}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
::selection{background:rgba(22,194,206,.35);color:var(--text-inv)}

/* ---------- 骨架 ---------- */
.shell{display:flex;min-height:100vh}
.page{flex:1;min-width:0;margin-left:248px;display:flex;flex-direction:column}
.container{width:100%;max-width:1320px;margin:0 auto;padding:0 48px}

/* ---------- 左侧导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;width:248px;height:100vh;z-index:60;
  display:flex;flex-direction:column;
  background:#080E1B;
  border-right:1px solid rgba(255,255,255,.08);
  padding:22px 16px 20px;
  overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:12px;padding:6px 8px 18px;border-bottom:1px solid rgba(255,255,255,.07)}
.brand:hover{text-decoration:none}
.brand-mark{
  width:36px;height:36px;flex:none;border-radius:11px;position:relative;
  background:linear-gradient(135deg,var(--primary),#0B7F8A);
  box-shadow:0 6px 18px rgba(22,194,206,.35),inset 0 1px 0 rgba(255,255,255,.25);
}
.brand-mark::after{content:"";position:absolute;inset:9px;border:2px solid rgba(247,250,255,.88);border-radius:6px}
.brand-text{font-size:17px;font-weight:700;color:var(--text-inv);letter-spacing:.02em}
.side-menu{display:flex;flex-direction:column;gap:4px;margin-top:20px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:46px;padding:0 14px;border-radius:12px;
  font-size:14.5px;color:var(--text-2);
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.nav-item .ico{width:20px;height:20px;flex:none}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text);text-decoration:none}
.nav-item.is-active{background:var(--primary-mist);color:var(--primary)}
.nav-item.is-active::before{
  content:"";position:absolute;left:-16px;top:50%;transform:translateY(-50%);
  width:3px;height:24px;border-radius:0 3px 3px 0;background:var(--primary);
  box-shadow:0 0 12px var(--primary);
}
.nav-item.is-active .ico{filter:drop-shadow(0 0 6px rgba(22,194,206,.6))}
.side-foot{margin-top:auto;padding-top:24px;border-top:1px solid rgba(255,255,255,.07)}
.side-contact{font-size:13px;color:var(--text-3);margin:14px 0 0}
.side-legal{font-size:12px;color:var(--text-3);margin:6px 0 0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease),box-shadow 180ms var(--ease),transform 180ms var(--ease);
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{
  background:var(--primary);color:#04191C;
  box-shadow:var(--glow),inset 0 1px 0 rgba(255,255,255,.22);
}
.btn-primary:hover{background:#25D2DE;box-shadow:0 10px 28px rgba(22,194,206,.45),inset 0 1px 0 rgba(255,255,255,.28)}
.btn-ghost{
  background:var(--glass);color:var(--text);border-color:var(--glass-bd);
  backdrop-filter:blur(16px) saturate(140%);
}
.btn-ghost:hover{border-color:rgba(22,194,206,.45);color:var(--primary)}
.btn-block{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:12.5px;line-height:1;color:var(--primary);
  background:var(--glass);border:1px solid var(--glass-bd);
  backdrop-filter:blur(10px);
}
.badge.is-amber{color:var(--amber)}
.badge-row{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- 顶部移动栏 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:70;height:64px;
  align-items:center;justify-content:space-between;padding:0 18px;
  background:rgba(8,14,27,.9);backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.hamburger{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--glass-bd);border-radius:var(--r-sm);cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}
.drawer{
  position:fixed;top:0;right:0;height:100vh;width:84vw;max-width:340px;z-index:90;
  background:#080E1B;border-left:1px solid rgba(255,255,255,.08);
  padding:22px 16px;display:flex;flex-direction:column;gap:6px;overflow-y:auto;
  transform:translateX(102%);transition:transform 220ms var(--ease);
}
.drawer.open{transform:translateX(0)}
.drawer .drawer-cta{margin-top:auto;padding-top:20px;border-top:1px solid rgba(255,255,255,.07)}
.drawer .nav-item{height:52px}
.drawer .nav-item.is-active::before{left:-16px}
.scrim{
  position:fixed;inset:0;z-index:80;background:rgba(4,8,16,.72);
  backdrop-filter:blur(4px);opacity:0;visibility:hidden;
  transition:opacity 220ms var(--ease),visibility 220ms var(--ease);
}
.scrim.open{opacity:1;visibility:visible}

/* ---------- 页头 ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid rgba(255,255,255,.07)}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.5;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(480px 480px at 12% 8%,rgba(22,194,206,.18),transparent 70%),
    linear-gradient(180deg,rgba(6,11,22,.72),rgba(6,11,22,.92));
}
.hero-grid-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:40px 40px;
  pointer-events:none;
}
.hero-inner{position:relative;padding:64px 48px 84px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:26px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary)}
.crumb .cur{color:var(--primary)}
.hero-cols{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
h1.hero-title{font-size:clamp(30px,4vw,44px);line-height:1.25;color:var(--text-inv);margin:18px 0 16px}
.hero-lead{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px}
.hero-media{
  margin:0;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--glass-bd);box-shadow:var(--sh-pop);
  background:linear-gradient(135deg,rgba(22,194,206,.18),rgba(255,182,92,.12));
}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section.alt{background:var(--bg-alt);border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06)}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head h2{font-size:clamp(24px,2.6vw,32px);color:var(--text-inv);margin-bottom:10px}
.sec-head p{color:var(--text-2);font-size:15px;margin:0}
.eyebrow{
  display:inline-block;font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--primary);font-family:var(--font-mono);margin-bottom:12px;
}

/* ---------- 对照表 ---------- */
.compare{
  border:1px solid var(--glass-bd);border-radius:var(--r-lg);
  background:var(--glass);backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--sh-card);overflow:hidden;
}
.compare-head{
  display:grid;grid-template-columns:minmax(180px,280px) 1fr;gap:0;
  background:rgba(22,194,206,.10);
  border-bottom:1px solid rgba(22,194,206,.28);
  font-size:13px;letter-spacing:.08em;color:var(--primary);
}
.compare-head span{padding:16px 24px}
.compare-row{
  display:grid;grid-template-columns:minmax(180px,280px) 1fr;
  min-height:56px;border-bottom:1px solid rgba(255,255,255,.06);
  transition:background 180ms var(--ease);
}
.compare-row:last-child{border-bottom:0}
.compare-row:nth-child(even){background:rgba(255,255,255,.02)}
.compare-row:hover{background:rgba(22,194,206,.07)}
.c-key{
  padding:16px 24px;display:flex;align-items:center;gap:10px;
  font-size:15px;font-weight:600;color:var(--text-inv);
  border-right:1px solid rgba(255,255,255,.06);
}
.c-key .dot{width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary);flex:none}
.c-val{padding:16px 24px;font-size:14.5px;color:var(--text-2);display:flex;align-items:center}
.c-val strong{color:var(--amber);font-family:var(--font-mono);font-weight:600;margin:0 4px}

/* ---------- 验证方式卡 ---------- */
.verify-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.vcard{
  grid-column:span 1;
  border:1px solid var(--glass-bd);border-radius:var(--r-lg);
  background:var(--glass);backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--sh-card);padding:28px 24px;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.vcard:hover{transform:translateY(-2px);border-color:rgba(22,194,206,.45);box-shadow:var(--sh-pop)}
.vcard.wide{grid-column:span 2}
.vcard .vico{
  width:32px;height:32px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.07);border:1px solid var(--glass-bd);color:var(--primary);margin-bottom:18px;
}
.vcard .vico svg{width:18px;height:18px}
.vcard h3{font-size:18px;margin-bottom:8px;color:var(--text-inv)}
.vcard p{font-size:14px;color:var(--text-2);margin:0}
.vnum{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:30px;color:var(--amber);line-height:1.2;margin-bottom:6px;
}
.vnum small{font-size:12px;color:var(--text-3);margin-left:6px;font-family:var(--font-cn)}

/* ---------- 异常信号列表 ---------- */
.signal-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.signal{
  display:flex;gap:14px;padding:22px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--glass-bd);
  transition:border-color 180ms var(--ease),background 180ms var(--ease);
}
.signal:hover{border-color:rgba(22,194,206,.45);background:rgba(22,194,206,.06)}
.signal .sico{
  width:26px;height:26px;flex:none;border-radius:8px;color:var(--amber);
  display:flex;align-items:center;justify-content:center;background:rgba(255,182,92,.14);
}
.signal .sico svg{width:16px;height:16px}
.signal h3{font-size:16px;margin-bottom:6px;color:var(--text-inv)}
.signal p{font-size:14px;color:var(--text-2);margin:0}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto}
.faq-item{border-top:1px solid rgba(255,255,255,.10)}
.faq-item:last-child{border-bottom:1px solid rgba(255,255,255,.10)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-inv);
  transition:color 180ms var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-q .faq-ico{
  width:20px;height:20px;flex:none;color:var(--text-3);
  transition:transform 220ms var(--ease),color 220ms var(--ease);
}
.faq-item.open .faq-q{color:var(--primary)}
.faq-item.open .faq-q .faq-ico{transform:rotate(180deg);color:var(--primary)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 220ms var(--ease);
}
.faq-a p{font-size:14px;color:var(--text-2);padding:0 0 18px;margin:0;max-width:720px}

/* ---------- CTA / 表单 ---------- */
.cta-panel{
  display:grid;grid-template-columns:7fr 5fr;gap:32px;
  border:1px solid var(--glass-bd);border-radius:var(--r-lg);
  background:linear-gradient(140deg,rgba(22,194,206,.10),rgba(255,255,255,.03));
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--sh-pop);padding:40px;
}
.form-row{margin-bottom:18px}
.form-row label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.form-row input,.form-row textarea,.form-row select{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);
  color:var(--text);font-size:15px;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease);
}
.form-row textarea{height:118px;padding:12px 14px;resize:vertical;line-height:1.7}
.form-row input:focus,.form-row textarea:focus,.form-row select:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,194,206,.18);
}
.form-row input::placeholder,.form-row textarea::placeholder{color:var(--text-3)}
.form-error{display:none;font-size:12px;color:var(--err);margin-top:6px}
.form-row.has-error input,.form-row.has-error textarea{border-color:var(--err)}
.form-row.has-error .form-error{display:block}
.form-ok{
  display:none;padding:14px 18px;border-radius:var(--r-sm);margin-bottom:18px;
  background:rgba(56,211,159,.14);border:1px solid rgba(56,211,159,.42);
  color:var(--ok);font-size:14px;
}
.form-ok.show{display:block}
.contact-list li{display:flex;gap:12px;align-items:flex-start;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.07)}
.contact-list li:last-child{border-bottom:0}
.contact-list .cico{width:20px;height:20px;color:var(--primary);flex:none;margin-top:4px}
.contact-list strong{display:block;font-size:14px;color:var(--text-inv);font-weight:600}
.contact-list span{font-size:13.5px;color:var(--text-2)}

/* ---------- 页脚 ---------- */
.footer{background:#05090F;border-top:1px solid rgba(255,255,255,.08);padding-top:64px;margin-top:auto}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.foot-brand .brand-mark{width:32px;height:32px;border-radius:10px}
.foot-brand .brand-mark::after{inset:8px;border-radius:5px}
.foot-brand .brand-text{font-size:16px;font-weight:700;color:var(--text-inv)}
.foot-col h4{font-size:15px;color:var(--text-inv);margin-bottom:14px}
.foot-col p{font-size:13.5px;color:var(--text-2);line-height:1.9;margin:0 0 6px}
.foot-col a{display:block;font-size:13.5px;color:var(--text-2);line-height:1.9;transition:color 180ms var(--ease),transform 180ms var(--ease)}
.foot-col a:hover{color:var(--primary);transform:translateX(2px);text-decoration:underline}
.foot-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:var(--text-3);
}
.to-top{
  width:44px;height:44px;flex:none;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--glass-bd);color:var(--text-2);
}
.to-top svg{width:20px;height:20px}
.to-top:hover{border-color:rgba(22,194,206,.45);color:var(--primary);text-decoration:none}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .verify-grid{grid-template-columns:repeat(2,1fr)}
  .vcard.wide{grid-column:span 2}
}
@media (max-width:1024px){
  .sidebar{display:none}
  .topbar{display:flex}
  .page{margin-left:0}
  .container{padding:0 32px}
  .hero-inner{padding:40px 0 64px}
  .hero-cols{grid-template-columns:1fr;gap:32px}
  .section{padding:72px 0}
  .signal-list{grid-template-columns:1fr}
  .cta-panel{grid-template-columns:1fr;padding:32px}
  .hero-grid-lines{display:none}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:48px 0}
  .hero-inner{padding:32px 0 48px}
  .compare-head{display:none}
  .compare-row{grid-template-columns:1fr}
  .c-key{border-right:0;border-bottom:1px solid rgba(255,255,255,.06);padding:14px 18px 10px}
  .c-val{padding:10px 18px 18px}
  .verify-grid{grid-template-columns:1fr}
  .vcard.wide{grid-column:span 1}
  .sec-head{margin-bottom:32px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  h1.hero-title{font-size:30px}
  .hero-actions .btn{width:100%}
  .badge{font-size:12px}
  .cta-panel{padding:24px}
  .foot-grid{grid-template-columns:1fr}
  .vnum{font-size:26px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category5 */
:root{
  --bg:#060B16;
  --bg-alt:#0A1120;
  --panel:#0F1830;
  --primary:#16C2CE;
  --primary-dark:#0FA3AF;
  --primary-mist:rgba(22,194,206,.14);
  --accent:#FFB65C;
  --glass:rgba(255,255,255,.055);
  --glass-border:rgba(255,255,255,.10);
  --glass-top:rgba(255,255,255,.16);
  --text:#E8EEF7;
  --text-2:#A9B6CC;
  --text-3:#6E7C96;
  --white:#F7FAFF;
  --success:#38D39F;
  --warn:#FFB65C;
  --error:#FF6B6B;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --shadow-card:0 8px 30px rgba(0,0,0,.35);
  --shadow-float:0 16px 48px rgba(0,0,0,.45);
  --glow:0 8px 24px rgba(22,194,206,.35);
  --ease:cubic-bezier(.4,0,.2,1);
  --font:"system-ui","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,"SF Mono","JetBrains Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease)}
a:hover{text-decoration:underline;text-underline-offset:4px}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
ul{margin:0;padding:0;list-style:none}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3}
h1{font-size:clamp(30px,4vw,48px);line-height:1.25}
h2{font-size:clamp(24px,2.6vw,34px)}
h3{font-size:20px;line-height:1.45;font-weight:600}
h4{font-size:16px;font-weight:600}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(22,194,206,.35);color:#fff}

/* ============ 布局骨架 ============ */
.shell{margin-left:248px;display:flex;flex-direction:column;min-height:100vh}
.container{width:100%;max-width:1320px;margin:0 auto;padding:0 48px}
section[id]{scroll-margin-top:32px}

/* ============ 左侧导航 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:248px;
  background:#080E1B;
  border-right:1px solid rgba(255,255,255,.08);
  padding:22px 16px 24px;
  display:flex;
  flex-direction:column;
  gap:8px;
  overflow-y:auto;
  z-index:60;
}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.1);border-radius:99px}
.brand{display:flex;align-items:center;gap:12px;padding:2px 8px 18px;border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:14px}
.brand-mark{
  width:36px;height:36px;flex:none;border-radius:11px;
  background:linear-gradient(140deg,#25DAE6,#0B7A85);
  box-shadow:0 6px 18px rgba(22,194,206,.35);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:9px;border:2px solid rgba(6,11,22,.78);border-radius:5px;
}
.brand-text{font-size:17px;font-weight:700;color:var(--white);letter-spacing:.02em}
.side-menu{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:10px;
  height:46px;padding:0 16px;
  border-radius:var(--r-sm);
  color:var(--text-2);
  font-size:15px;
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text);text-decoration:none}
.nav-item .ico{width:20px;height:20px;flex:none;opacity:.9}
.nav-item.is-active{background:var(--primary-mist);color:var(--primary)}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:999px;background:var(--primary);
  box-shadow:0 0 12px rgba(22,194,206,.65);
}
.nav-item.is-active .ico{filter:drop-shadow(0 0 6px rgba(22,194,206,.6))}
.side-foot{margin-top:auto;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-direction:column;gap:10px}
.side-foot .hint{font-size:13px;color:var(--text-3);line-height:1.7}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:var(--r-sm);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:background 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease),transform 180ms var(--ease),opacity 180ms var(--ease);
  text-decoration:none;
}
.btn:hover{text-decoration:none}
.btn-primary{
  background:var(--primary);color:#04131A;
  box-shadow:var(--glow),inset 0 1px 0 rgba(255,255,255,.22);
}
.btn-primary:hover{background:#23D3DF;box-shadow:0 10px 30px rgba(22,194,206,.5),inset 0 1px 0 rgba(255,255,255,.28);transform:translateY(-1px)}
.btn-ghost{
  background:var(--glass);color:var(--text);
  border-color:var(--glass-border);
  backdrop-filter:blur(12px);
}
.btn-ghost:hover{border-color:rgba(22,194,206,.55);color:var(--primary);background:rgba(22,194,206,.08)}
.btn-block{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  font-size:12.5px;
  color:var(--primary);
  white-space:nowrap;
}
.badge-amber{color:var(--accent)}
.badge-row{display:flex;flex-wrap:wrap;gap:10px}

/* ============ 顶部移动栏 ============ */
.mobile-bar{display:none}
.drawer,.drawer-mask{display:none}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;border-bottom:1px solid rgba(255,255,255,.08)}
.hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.55;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,22,.68) 0%,rgba(6,11,22,.9) 60%,rgba(6,11,22,.97) 100%);
  z-index:1;
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(480px 480px at 12% 8%,rgba(22,194,206,.18),transparent 70%),
    repeating-linear-gradient(0deg,rgba(255,255,255,.035) 0 1px,transparent 1px 40px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.035) 0 1px,transparent 1px 40px);
}
.hero-inner{position:relative;z-index:2;padding:72px 0 72px;display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center}
.hero-copy{grid-column:span 6}
.hero-aside{grid-column:span 5;grid-column-start:8}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary)}
.crumb span.sep{opacity:.5}
.hero h1{margin-bottom:18px;color:var(--white)}
.hero .sub{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:22px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:22px}

.glass-panel{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-top-color:var(--glass-top);
  border-radius:var(--r-lg);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow-card);
  padding:26px;
}
.panel-title{font-size:13px;color:var(--text-3);letter-spacing:.06em;margin-bottom:16px}
.panel-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.1)}
.panel-row:last-child{border-bottom:0;padding-bottom:0}
.panel-row .k{font-size:14px;color:var(--text-2)}
.panel-row .v{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:15px;color:var(--accent)}

/* ============ 板块 ============ */
.section{padding:96px 0}
.section-alt{background:var(--bg-alt);border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head .lead{font-size:15px;color:var(--text-2);margin-top:12px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12.5px;letter-spacing:.14em;
  color:var(--primary);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary);opacity:.7}

/* ============ 服务错落网格 ============ */
.grid-6{display:grid;grid-template-columns:repeat(6,1fr);gap:20px}
.card{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-top-color:var(--glass-top);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  padding:26px;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
  display:flex;flex-direction:column;gap:12px;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-float);border-color:rgba(22,194,206,.45)}
.card .ico-box{
  width:32px;height:32px;border-radius:10px;
  display:grid;place-items:center;
  background:var(--primary-mist);
  border:1px solid rgba(22,194,206,.28);
  color:var(--primary);
}
.card .ico-box svg{width:18px;height:18px}
.card h3{font-size:18px}
.card p{font-size:14px;color:var(--text-2);line-height:1.75}
.span-3{grid-column:span 3}
.span-2{grid-column:span 2}
.card-media{
  border-radius:var(--r-md);
  overflow:hidden;
  position:relative;
  aspect-ratio:16/9;
  background:linear-gradient(140deg,rgba(22,194,206,.18),rgba(255,182,92,.12));
}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-media::after{content:"";position:absolute;inset:0;background:rgba(6,11,22,.25)}

/* ============ 流程 / 目录 ============ */
.steps-layout{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:start}
.toc{grid-column:span 4;position:sticky;top:36px}
.toc-inner{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--r-lg);
  padding:20px;
  backdrop-filter:blur(16px) saturate(140%);
}
.toc-title{font-size:13px;color:var(--text-3);letter-spacing:.06em;margin-bottom:12px}
.toc-link{
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:var(--r-sm);
  color:var(--text-2);font-size:14.5px;
  position:relative;
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.toc-link:hover{background:rgba(255,255,255,.05);color:var(--text);text-decoration:none}
.toc-link .num{font-family:var(--mono);font-size:12.5px;color:var(--text-3);min-width:22px}
.toc-link.is-current{background:var(--primary-mist);color:var(--primary)}
.toc-link.is-current .num{color:var(--primary)}
.toc-link.is-current::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:99px;
  background:var(--primary);box-shadow:0 0 10px rgba(22,194,206,.6);
}
.steps{grid-column:span 8;display:flex;flex-direction:column;gap:24px}
.step{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-top-color:var(--glass-top);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--shadow-card);
  transition:border-color 180ms var(--ease),transform 180ms var(--ease);
}
.step:hover{border-color:rgba(22,194,206,.4);transform:translateY(-2px)}
.step-top{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.step-no{
  width:40px;height:40px;flex:none;border-radius:var(--r-sm);
  display:grid;place-items:center;
  font-family:var(--mono);font-size:15px;font-weight:600;
  color:var(--primary);
  background:var(--primary-mist);
  border:1px solid rgba(22,194,206,.32);
}
.step h3{font-size:19px}
.step p{font-size:14px;color:var(--text-2);line-height:1.85}

/* ============ 指标 ============ */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:56px}
.metric{
  position:relative;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-top-color:var(--glass-top);
  border-radius:var(--r-lg);
  padding:28px 24px;
  box-shadow:var(--shadow-card);
}
.metric .ico-box{
  width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
  background:rgba(255,255,255,.06);border:1px solid var(--glass-border);color:var(--primary);
  margin-bottom:16px;
}
.metric .ico-box svg{width:18px;height:18px}
.metric .val{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:38px;line-height:1.1;font-weight:700;color:var(--accent);
}
.metric .val .unit{font-size:15px;margin-left:4px;vertical-align:super;color:var(--text-2);font-weight:400}
.metric .cap{font-size:13px;color:var(--text-3);margin-top:10px}

.bars{display:flex;flex-direction:column;gap:18px;max-width:860px}
.bar-row{display:grid;grid-template-columns:150px 1fr 62px;align-items:center;gap:16px}
.bar-label{font-size:14px;color:var(--text-2)}
.bar-track{height:8px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}
.bar-fill{
  display:block;height:100%;border-radius:999px;
  background:linear-gradient(90deg,var(--primary-dark),var(--primary));
  box-shadow:0 0 14px rgba(22,194,206,.45);
}
.bar-val{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:14px;color:var(--accent);text-align:right}

/* ============ FAQ ============ */
.faq{max-width:820px;margin:0 auto}
.faq-item{border-top:1px solid rgba(255,255,255,.1)}
.faq-item:last-child{border-bottom:1px solid rgba(255,255,255,.1)}
.faq-q{
  width:100%;background:none;border:0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 0;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
  transition:color 180ms var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-q .mark{
  width:20px;height:20px;flex:none;position:relative;
  transition:transform 220ms var(--ease);
}
.faq-q .mark::before,.faq-q .mark::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
  left:50%;top:50%;transform:translate(-50%,-50%);
}
.faq-q .mark::before{width:14px;height:2px}
.faq-q .mark::after{width:2px;height:14px;transition:opacity 220ms var(--ease)}
.faq-item.is-open .faq-q{color:var(--primary)}
.faq-item.is-open .faq-q .mark{transform:rotate(180deg);color:var(--primary)}
.faq-item.is-open .faq-q .mark::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms var(--ease)}
.faq-a p{font-size:14px;color:var(--text-2);line-height:1.8;padding:0 0 18px}

/* ============ CTA 表单 ============ */
.cta-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:start}
.form-card{grid-column:span 7}
.info-card{grid-column:span 5}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field textarea,.field select{
  width:100%;height:48px;padding:0 14px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-sm);
  color:var(--text);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease);
}
.field textarea{height:120px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(22,194,206,.18);
  background:rgba(255,255,255,.06);
}
.field.has-error input,.field.has-error textarea{border-color:var(--error)}
.field .err{display:none;font-size:12px;color:var(--error);margin-top:6px}
.field.has-error .err{display:block}
.form-tip{font-size:13px;color:var(--text-3);margin-top:14px}
.form-success{
  display:none;
  background:rgba(56,211,159,.12);
  border:1px solid rgba(56,211,159,.4);
  border-radius:var(--r-md);
  padding:18px;
  color:var(--success);
  font-size:15px;
}
.form-success.is-visible{display:block}
.info-row{display:flex;gap:12px;align-items:flex-start;padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.1)}
.info-row:last-child{border-bottom:0}
.info-row .ico-box{
  width:32px;height:32px;flex:none;border-radius:10px;display:grid;place-items:center;
  background:var(--primary-mist);border:1px solid rgba(22,194,206,.26);color:var(--primary);
}
.info-row .ico-box svg{width:17px;height:17px}
.info-row .k{font-size:14px;color:var(--text)}
.info-row .v{font-size:13px;color:var(--text-3)}

/* ============ 页脚 ============ */
.footer{background:#05090F;border-top:1px solid rgba(255,255,255,.08);padding:64px 0 24px;margin-top:auto}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.foot-brand .brand-text{font-size:16px}
.foot-col h4{font-size:14px;color:var(--white);margin-bottom:14px;letter-spacing:.02em}
.foot-col p{font-size:13.5px;color:var(--text-3);line-height:1.9}
.foot-col a{display:block;font-size:13.5px;color:var(--text-2);line-height:1.9;transition:color 180ms var(--ease),transform 180ms var(--ease)}
.foot-col a:hover{color:var(--primary);transform:translateX(2px);text-decoration:underline;text-underline-offset:4px}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:var(--text-3);
}
.to-top{
  width:44px;height:44px;flex:none;border-radius:50%;
  display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--glass-border);
  color:var(--text-2);
  transition:border-color 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease);
}
.to-top:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);text-decoration:none}
.to-top svg{width:18px;height:18px}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .container{padding:0 32px}
  .grid-6{grid-template-columns:repeat(4,1fr)}
  .span-3{grid-column:span 2}
  .span-2{grid-column:span 2}
  .metrics{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1024px){
  .sidebar{display:none}
  .shell{margin-left:0}
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;
    position:sticky;top:0;z-index:70;
    height:64px;padding:0 20px;
    background:rgba(8,14,27,.9);
    backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .mobile-bar .brand{padding:0;border:0;margin:0}
  .mobile-bar .brand-mark{width:32px;height:32px;border-radius:10px}
  .mobile-bar .brand-mark::after{inset:8px}
  .hamburger{
    width:44px;height:44px;border-radius:var(--r-sm);
    background:var(--glass);border:1px solid var(--glass-border);
    display:grid;place-items:center;color:var(--text);
  }
  .hamburger svg{width:20px;height:20px}
  .drawer-mask{
    display:block;position:fixed;inset:0;z-index:80;
    background:rgba(4,8,16,.72);backdrop-filter:blur(4px);
    opacity:0;visibility:hidden;
    transition:opacity 220ms var(--ease),visibility 220ms var(--ease);
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .drawer{
    display:flex;flex-direction:column;gap:6px;
    position:fixed;top:0;right:0;height:100%;width:84vw;max-width:340px;
    background:#080E1B;border-left:1px solid rgba(255,255,255,.08);
    padding:20px 16px;z-index:90;overflow-y:auto;
    transform:translateX(102%);
    transition:transform 240ms var(--ease);
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer .nav-item{height:52px}
  .drawer-close{
    align-self:flex-end;width:44px;height:44px;border-radius:var(--r-sm);
    background:var(--glass);border:1px solid var(--glass-border);
    display:grid;place-items:center;color:var(--text);margin-bottom:10px;
  }
  .drawer-close svg{width:18px;height:18px}
  .drawer .side-foot{margin-top:auto}
  .hero-inner{grid-template-columns:1fr;padding:56px 0}
  .hero-copy,.hero-aside{grid-column:span 1;grid-column-start:auto}
  .hero-aside{margin-top:12px}
  .section{padding:72px 0}
  .steps-layout{grid-template-columns:1fr}
  .toc{grid-column:span 1;position:static}
  .steps{grid-column:span 1}
  .toc-inner{padding:14px;border-radius:var(--r-md)}
  .toc-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin}
  .toc-link{flex:none;background:rgba(255,255,255,.04);border:1px solid var(--glass-border);padding:8px 14px;white-space:nowrap}
  .toc-link.is-current::before{display:none}
  .cta-grid{grid-template-columns:1fr}
  .form-card,.info-card{grid-column:span 1}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  body{font-size:15.5px}
  .grid-6{grid-template-columns:1fr}
  .span-3,.span-2{grid-column:span 1}
  .metrics{grid-template-columns:1fr;gap:16px}
  .section{padding:48px 0}
  .section-head{margin-bottom:32px}
  .metric .val{font-size:32px}
  .bar-row{grid-template-columns:1fr 58px;grid-template-areas:"label label" "track val";row-gap:8px}
  .bar-label{grid-area:label}
  .bar-track{grid-area:track}
  .bar-val{grid-area:val}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:14px}
  .hero::after{background:radial-gradient(420px 420px at 12% 8%,rgba(22,194,206,.16),transparent 70%)}
}
@media (max-width:480px){
  h1{font-size:30px}
  .hero-actions .btn,.form-card .btn{width:100%}
  .card,.step,.glass-panel,.metric{padding:20px}
  .faq-q{padding:16px 0;font-size:15.5px}
  .badge-row{gap:8px}
  .badge{font-size:12px;padding:0 10px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}