/* roulang page: index */
:root{
  --ink-900:#0E1015; --ink-800:#161A23; --ink-700:#1C2130; --ink-600:#262C3A;
  --line:rgba(255,255,255,.08); --line-strong:rgba(255,255,255,.16);
  --primary:#6C4CF1; --primary-deep:#5A3BDD; --accent:#C6F84E; --hot:#FF5F7E;
  --t-1:#F2F4F8; --t-2:#A7AEC0; --t-3:#6E7686;
  --paper:#F6F7FB; --paper-card:#FFFFFF; --paper-t:#14161C; --paper-t2:#5A6070; --paper-line:#E5E7EF;
  --r-card:16px; --r-btn:10px; --r-input:10px; --r-img:12px; --r-pill:999px;
  --sd-card:0 1px 0 rgba(255,255,255,.04) inset, 0 12px 28px rgba(0,0,0,.35);
  --sd-paper:0 6px 18px rgba(20,22,28,.06);
  --side-w:260px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--ink-900);color:var(--t-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.7;overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
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}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:var(--primary);color:#fff}
.num{font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:-.02em}

/* 侧边导航 */
.shell-side{
  position:fixed;top:0;left:0;width:var(--side-w);height:100vh;z-index:1050;
  background:var(--ink-800);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:22px 18px 18px;overflow-y:auto;
}
.shell-side::-webkit-scrollbar{width:6px}
.shell-side::-webkit-scrollbar-thumb{background:var(--ink-600);border-radius:6px}
.brand{display:flex;align-items:center;gap:12px;padding:4px 6px 20px;border-bottom:1px solid var(--line)}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:11px;background:var(--primary);
  display:grid;place-items:center;color:#fff;font-weight:700;font-size:17px;letter-spacing:-.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text .b1{font-size:17px;font-weight:700}
.brand-text .b2{font-size:12px;color:var(--t-3);letter-spacing:.08em}
.side-label{font-size:11px;color:var(--t-3);letter-spacing:.16em;margin:22px 8px 10px;text-transform:uppercase}
.side-nav{display:flex;flex-direction:column;gap:2px}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:10px;color:var(--t-2);font-size:14.5px;font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.side-nav a i{width:20px;text-align:center;font-size:15px;color:var(--t-3);transition:color .2s ease}
.side-nav a:hover{background:var(--ink-700);color:var(--t-1)}
.side-nav a:hover i{color:var(--accent)}
.side-nav a.active{background:var(--ink-700);color:var(--t-1);font-weight:700}
.side-nav a.active i{color:var(--accent)}
.side-nav a.active::before{
  content:"";position:absolute;left:-18px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--accent);
}
.side-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px}
.side-foot .note{font-size:12px;color:var(--t-3);line-height:1.6}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:44px;border-radius:var(--r-btn);background:var(--primary);color:#fff;font-weight:600;font-size:14.5px;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;border:0;
}
.side-cta:hover{transform:translateY(-2px);filter:brightness(1.08);color:#fff}
.side-cta:active{transform:translateY(0)}

.scrim{position:fixed;inset:0;background:rgba(6,7,10,.6);z-index:1040;opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease}
.scrim.on{opacity:1;visibility:visible}

.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:1030;
  background:rgba(14,16,21,.94);border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 14px;
}
.mobile-bar .mb-btn{
  width:44px;height:44px;display:grid;place-items:center;background:transparent;border:0;
  color:var(--t-1);font-size:18px;border-radius:10px;
}
.mobile-bar .mb-btn:hover{background:var(--ink-700)}
.mobile-brand{font-size:15px;font-weight:700}
.mobile-brand span{color:var(--t-3);font-weight:400;font-size:12px;margin-left:6px}

/* 主区 */
.shell-main{margin-left:var(--side-w);min-height:100vh}
.wrap{max-width:1240px;margin:0 auto;padding:0 32px}
.band{padding:96px 0}
.band-paper{background:var(--paper);color:var(--paper-t)}
.band-line{border-top:1px solid var(--line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;
  color:var(--accent);text-transform:uppercase;font-weight:600;margin-bottom:16px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--accent)}
.band-paper .eyebrow{color:#5A3BDD}
.band-paper .eyebrow::before{background:#5A3BDD}
.sec-title{font-size:clamp(26px,2.8vw,36px)}
.sec-sub{margin-top:14px;color:var(--t-2);font-size:15.5px;max-width:620px}
.band-paper .sec-sub{color:var(--paper-t2)}

/* Hero */
.hero{
  display:grid;grid-template-columns:1.02fr .98fr;gap:48px;align-items:center;
  min-height:clamp(560px,72vh,720px);padding:72px 0 64px;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);background:rgba(108,76,241,.12);
  font-size:12.5px;color:var(--t-2);margin-bottom:22px;
}
.hero-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.hero h1{font-size:clamp(34px,4.6vw,56px);letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-sub{margin-top:20px;font-size:17px;color:var(--t-2);max-width:520px}
.hero-actions{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px}
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;height:48px;padding:0 26px;
  border-radius:var(--r-btn);font-weight:600;font-size:15px;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,border-color .2s ease,color .2s ease;
}
.btn-main{background:var(--primary);color:#fff;border:1px solid var(--primary)}
.btn-main:hover{transform:translateY(-2px);filter:brightness(1.08);color:#fff}
.btn-main:active{transform:translateY(0)}
.btn-ghost{background:transparent;border:1px solid var(--line-strong);color:var(--t-1)}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--accent);color:var(--accent)}
.btn-ghost:active{transform:translateY(0)}
.hero-facts{margin-top:42px;display:flex;flex-wrap:wrap;gap:34px}
.fact .fv{font-size:26px;color:var(--t-1)}
.fact .fk{font-size:12.5px;color:var(--t-3);margin-top:2px}
.hero-visual{position:relative}
.hero-visual img{border-radius:var(--r-img);border:1px solid var(--line);width:100%;height:auto;object-fit:cover}
.hero-strip{
  margin-top:14px;display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  border:1px solid var(--line);border-radius:12px;padding:13px 18px;background:var(--ink-800);
}
.hero-strip span{font-size:13px;color:var(--t-2);display:flex;align-items:center;gap:8px}
.hero-strip span b{color:var(--accent);font-weight:700}
.hero-strip .sep{width:1px;height:14px;background:var(--line-strong);padding:0;display:block}

/* 三步 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:56px;border-top:1px dashed var(--line-strong)}
.step{padding:34px 30px 8px;border-right:1px dashed var(--line-strong)}
.step:last-child{border-right:0}
.step:nth-child(2){margin-top:26px}
.step:nth-child(3){margin-top:52px}
.step-num{font-size:40px;color:var(--accent);line-height:1}
.step h3{margin-top:18px;font-size:19px}
.step p{margin-top:10px;color:var(--t-2);font-size:14.5px;max-width:250px}

/* 案例 */
.proof{display:grid;grid-template-columns:2fr 3fr;gap:44px;align-items:start}
.proof-copy p{margin-top:18px;color:var(--t-2);font-size:15px;max-width:330px}
.proof-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.proof-card{
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px;transition:transform .3s ease,border-color .3s ease;
}
.proof-card:hover{transform:translateY(-3px);border-color:rgba(198,248,78,.4)}
.proof-card .pimg{overflow:hidden;border-radius:12px}
.proof-card .pimg img{width:100%;height:150px;object-fit:cover;transition:transform .3s ease}
.proof-card:hover .pimg img{transform:scale(1.03)}
.proof-card h3{margin-top:16px;font-size:16.5px}
.proof-card p{margin-top:8px;font-size:13.5px;color:var(--t-2);line-height:1.65}
.badge-num{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(198,248,78,.12);border:1px solid rgba(198,248,78,.35);color:var(--accent);
  font-size:12px;font-weight:600;
}
.badge-hot{background:rgba(255,95,126,.12);border-color:rgba(255,95,126,.35);color:var(--hot)}

/* 能力列表 */
.ability{display:grid;grid-template-columns:1fr 1.6fr;gap:52px;align-items:start}
.ability-list{border-top:1px solid var(--line)}
.ability-row{
  display:grid;grid-template-columns:44px 1fr auto;align-items:center;gap:20px;
  padding:24px 6px;border-bottom:1px solid var(--line);transition:background .25s ease,padding .25s ease;
}
.ability-row:hover{background:var(--ink-800);padding-left:16px;padding-right:16px}
.ability-row .ai{
  width:44px;height:44px;border-radius:12px;background:var(--ink-700);border:1px solid var(--line);
  display:grid;place-items:center;color:var(--accent);font-size:16px;
}
.ability-row h3{font-size:17px}
.ability-row p{margin-top:6px;font-size:13.5px;color:var(--t-2)}
.ability-row .arrow{color:var(--t-3);font-size:14px;transition:color .25s ease,transform .25s ease}
.ability-row:hover .arrow{color:var(--accent);transform:translateX(4px)}

/* FAQ */
.faq{display:grid;grid-template-columns:280px 1fr;gap:52px;align-items:start}
.faq-index{border-left:2px solid var(--line);padding-left:20px;display:flex;flex-direction:column;gap:16px}
.faq-index a{font-size:14.5px;color:var(--t-2);transition:color .2s ease}
.faq-index a:hover{color:var(--accent)}
.faq-index a.on{color:var(--t-1);font-weight:700}
.accordion-item{background:transparent;border:0}
.accordion-button{
  background:transparent;color:var(--t-1);font-size:16.5px;font-weight:600;
  padding:22px 44px 22px 0;border-radius:0;box-shadow:none;
  border-bottom:1px solid var(--line);position:relative;
}
.accordion-button:not(.collapsed){color:var(--primary);background:transparent;box-shadow:none}
.accordion-button:focus{box-shadow:none;border-color:var(--line)}
.accordion-button::after{display:none}
.faq-sign{position:absolute;right:4px;top:50%;transform:translateY(-50%);font-size:20px;color:var(--t-3);line-height:1}
.accordion-button:not(.collapsed) .faq-sign{color:var(--accent)}
.faq-sign::before{content:"+"}
.accordion-button:not(.collapsed) .faq-sign::before{content:"−"}
.accordion-body{padding:18px 30px 24px 0;color:var(--t-2);font-size:15px;border-bottom:1px solid var(--line)}
.accordion-button:not(.collapsed){padding-left:18px}
.accordion-button:not(.collapsed)::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;background:var(--accent);border-radius:2px}

/* 资讯 */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap}
.more-link{font-size:14px;color:#5A3BDD;font-weight:600;display:inline-flex;align-items:center;gap:7px}
.more-link:hover{text-decoration:underline;text-underline-offset:3px}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px}
.news-card{
  background:var(--paper-card);border:1px solid var(--paper-line);border-radius:var(--r-card);
  padding:16px;display:flex;flex-direction:column;box-shadow:var(--sd-paper);
  transition:transform .3s ease,border-color .3s ease;
}
.news-card:hover{transform:translateY(-3px);border-color:rgba(108,76,241,.4)}
.news-thumb{display:block;overflow:hidden;border-radius:12px;background:var(--paper-line)}
.news-thumb img{width:88px;height:66px;object-fit:cover;transition:transform .3s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{display:flex;flex-direction:column;flex:1;padding-top:16px}
.news-title{font-size:16px;line-height:1.5}
.news-title a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a:hover{color:#5A3BDD}
.news-desc{margin-top:10px;font-size:13px;color:var(--paper-t2);line-height:1.65;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.tag{
  display:inline-flex;align-items:center;padding:3px 11px;border-radius:var(--r-pill);
  border:1px solid rgba(108,76,241,.4);color:#5A3BDD;font-size:12px;font-weight:600;background:transparent;
}
.news-time{font-size:12.5px;color:var(--paper-t2)}
.empty-state{
  grid-column:1/-1;padding:64px 20px;text-align:center;border:1px dashed var(--paper-line);
  border-radius:var(--r-card);color:var(--paper-t2);background:var(--paper-card);
}
.empty-state i{display:block;font-size:26px;margin-bottom:12px;color:#9AA1B4}

/* CTA 表单 */
.cta-band{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cta-copy h2{font-size:clamp(26px,2.8vw,36px)}
.cta-copy p{margin-top:18px;color:var(--t-2);font-size:15.5px;max-width:420px}
.cta-points{margin-top:30px;display:flex;flex-direction:column;gap:14px}
.cta-points li{display:flex;align-items:flex-start;gap:12px;font-size:14.5px;color:var(--t-2)}
.cta-points i{color:var(--accent);margin-top:4px;font-size:13px}
.form-panel{background:var(--ink-900);border:1px solid var(--line);border-radius:var(--r-card);padding:30px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;color:var(--t-2);margin-bottom:8px}
.field label b{color:var(--hot);font-weight:400;margin-left:3px}
.field input,.field select,.field textarea{
  width:100%;background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-input);
  padding:12px 14px;font-size:14.5px;color:var(--t-1);transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:104px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--t-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 2px rgba(108,76,241,.28);
}
.form-tip{font-size:13px;color:var(--t-3);margin-top:14px;line-height:1.6}
.form-msg{font-size:13px;color:var(--accent);margin-top:12px;display:none}
.form-msg.on{display:block}

/* 页脚 */
.site-foot{background:var(--ink-900);border-top:1px solid var(--line);padding:72px 0 28px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:44px}
.foot-brand .fb-name{font-size:17px;font-weight:700;display:flex;align-items:center;gap:10px}
.foot-brand .fb-name .mk{width:32px;height:32px;border-radius:9px;background:var(--primary);display:grid;place-items:center;font-size:14px;color:#fff}
.foot-brand p{margin-top:16px;font-size:13px;color:var(--t-3);line-height:1.75;max-width:330px}
.foot-col h4{font-size:13.5px;color:var(--t-1);margin-bottom:16px}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col a,.foot-col li{font-size:13px;color:var(--t-3)}
.foot-col a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.foot-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--t-3);
}

/* 响应式 */
@media (min-width:1400px){:root{--side-w:260px}}
@media (max-width:1199.98px){
  :root{--side-w:200px}
  .hero{grid-template-columns:1fr;gap:40px;padding-top:48px;min-height:auto}
  .proof{grid-template-columns:1fr;gap:32px}
  .ability{grid-template-columns:1fr;gap:32px}
  .faq{grid-template-columns:1fr;gap:32px}
  .faq-index{flex-direction:row;flex-wrap:wrap;border-left:0;border-top:2px solid var(--line);padding:16px 0 0;gap:20px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .band{padding:72px 0}
}
@media (max-width:991.98px){
  .shell-side{transform:translateX(-100%);transition:transform .28s ease;width:272px;z-index:1060}
  .shell-side.open{transform:none}
  .mobile-bar{display:flex}
  .shell-main{margin-left:0;padding-top:56px}
  .wrap{padding:0 20px}
  .band{padding:56px 0}
  .steps{grid-template-columns:1fr;border-top:0}
  .step{border-right:0;border-top:1px dashed var(--line-strong);padding:28px 0 4px;margin-top:0 !important}
  .proof-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:32px}
}
@media (max-width:576px){
  .hero h1{font-size:32px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
  .news-grid{grid-template-columns:1fr}
  .hero-facts{gap:24px}
  .ability-row{grid-template-columns:40px 1fr;gap:14px}
  .ability-row .arrow{display:none}
  .form-panel{padding:22px}
  .btn-main,.btn-ghost,.side-cta{min-height:48px}
}

/* roulang page: category1 */
:root{
  --ink-900:#0E1015;
  --ink-800:#161A23;
  --ink-700:#1C2130;
  --ink-600:#262C3A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#6C4CF1;
  --primary-d:#5B3CE0;
  --accent:#C6F84E;
  --hot:#FF5F7E;
  --t-1:#F2F4F8;
  --t-2:#A7AEC0;
  --t-3:#6E7686;
  --paper:#F6F7FB;
  --paper-card:#FFFFFF;
  --paper-t:#14161C;
  --paper-line:#E5E7EF;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset, 0 12px 28px rgba(0,0,0,.35);
  --shadow-paper:0 6px 18px rgba(20,22,28,.06);
  --sidebar-w:260px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--t-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.7;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:clamp(30px,3.4vw,44px);line-height:1.24;letter-spacing:-.02em;font-weight:700;}
h2{font-size:clamp(24px,2.4vw,32px);line-height:1.3;letter-spacing:-.02em;font-weight:700;}
h3{font-size:20px;line-height:1.4;font-weight:700;letter-spacing:-.01em;}
h4{font-size:17px;line-height:1.45;font-weight:600;}
::selection{background:var(--accent);color:#101215;}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}

/* ---------- 布局骨架 ---------- */
.app{min-height:100vh;}
.app-main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}

/* ---------- 左侧导航 ---------- */
.sidebar{
  position:fixed;inset:0 auto 0 0;width:var(--sidebar-w);
  background:var(--ink-800);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:24px 18px 20px;
  overflow-y:auto;overscroll-behavior:contain;z-index:1040;
  transition:transform .28s ease;
}
.sidebar::-webkit-scrollbar{width:6px;}
.sidebar::-webkit-scrollbar-thumb{background:var(--ink-600);border-radius:6px;}
.sidebar::-webkit-scrollbar-track{background:transparent;}
.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 20px;border-bottom:1px solid var(--line);}
.brand .bm{width:34px;height:34px;flex:0 0 34px;border-radius:10px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:700;font-size:17px;}
.brand .bt{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.brand .bt strong{font-size:14.5px;font-weight:700;color:var(--t-1);letter-spacing:-.01em;white-space:nowrap;}
.brand .bt em{font-style:normal;font-size:11.5px;color:var(--t-3);letter-spacing:.06em;}
.side-nav{display:flex;flex-direction:column;gap:4px;padding:20px 0;margin:0;}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 14px;border-radius:10px;
  color:var(--t-2);font-size:14.5px;font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.side-nav a i{width:20px;text-align:center;font-size:15px;color:currentColor;opacity:.9;}
.side-nav a:hover{background:var(--ink-700);color:var(--t-1);}
.side-nav a.active{background:var(--ink-700);color:var(--t-1);font-weight:600;}
.side-nav a.active::before{
  content:"";position:absolute;left:-18px;top:50%;transform:translateY(-50%);
  width:3px;height:18px;border-radius:0 3px 3px 0;background:var(--accent);
}
.side-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px;}
.side-note{font-size:12px;color:var(--t-3);line-height:1.6;margin:0;}
.btn-block{width:100%;justify-content:center;}

/* ---------- 移动顶部栏 ---------- */
.mbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:1035;
  background:rgba(14,16,21,.92);
  border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 14px;
}
.mbar .burger{width:44px;height:44px;display:grid;place-items:center;background:transparent;border:0;color:var(--t-1);font-size:17px;border-radius:10px;}
.mbar .burger:hover{background:var(--ink-700);}
.mbar-logo{font-size:13px;font-weight:700;letter-spacing:-.01em;color:var(--t-1);}
.mbar-cta{width:44px;height:44px;display:grid;place-items:center;background:var(--primary);color:#fff;border-radius:10px;font-size:15px;}
.scrim{position:fixed;inset:0;background:rgba(6,7,10,.6);opacity:0;visibility:hidden;transition:.25s ease;z-index:1039;}
.scrim.on{opacity:1;visibility:visible;}

/* ---------- 面包屑 ---------- */
.crumb{padding:28px 0 0;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t-3);}
.crumb a{color:var(--t-3);}
.crumb a:hover{color:var(--accent);}
.crumb li:not(:last-child)::after{content:"/";margin-left:8px;color:var(--ink-600);}
.crumb li[aria-current]{color:var(--t-2);}

/* ---------- Hero ---------- */
.hero{padding:28px 0 0;}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(108,76,241,.14);
  color:var(--accent);font-size:12px;font-weight:600;letter-spacing:.06em;
}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
.hero h1{margin:20px 0 16px;}
.hero .lead{font-size:16.5px;color:var(--t-2);max-width:520px;}
.btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-meta span{
  font-size:12px;color:var(--t-2);padding:5px 12px;border-radius:999px;
  border:1px solid var(--line);background:var(--ink-800);
}
.hero-art{position:relative;}
.hero-art img{width:100%;height:clamp(300px,42vh,400px);object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line);}
.art-bar{
  margin-top:-1px;border:1px solid var(--line);border-top:0;border-radius:0 0 var(--r-img) var(--r-img);
  background:var(--ink-800);
  display:flex;align-items:center;gap:10px;padding:12px 16px;
  font-size:12.5px;color:var(--t-2);flex-wrap:wrap;
}
.art-bar b{color:var(--accent);font-weight:700;}
.art-bar i{font-size:11px;color:var(--t-3);font-style:normal;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;letter-spacing:-.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,filter .22s ease;
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-d);transform:translateY(-2px);color:#fff;}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--t-1);}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;}

/* ---------- 数据条 ---------- */
.strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:64px;background:var(--ink-800);}
.strip-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.st{padding:26px 8px;text-align:center;border-right:1px solid var(--line);}
.st:last-child{border-right:0;}
.st strong{display:block;font-size:32px;font-weight:700;color:var(--accent);letter-spacing:-.02em;line-height:1.1;}
.st span{display:block;margin-top:8px;font-size:13px;color:var(--t-2);}

/* ---------- 通用板块 ---------- */
.sec{padding:96px 0;}
.sec-paper{background:var(--paper);color:var(--paper-t);}
.sec-paper .sec-head h2,.sec-paper h3{color:var(--paper-t);}
.sec-paper .sec-head p{color:#5A6072;}
.sec-head{max-width:720px;margin-bottom:44px;}
.sec-head h2{margin-bottom:14px;}
.sec-head p{color:var(--t-2);font-size:15.5px;}
.sec-line{border-top:1px solid var(--line);}

/* ---------- 双列大卡 ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.bigcard{
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:border-color .3s ease,transform .3s ease;
  display:flex;flex-direction:column;
}
.bigcard:hover{border-color:rgba(198,248,78,.4);transform:translateY(-3px);}
.bigcard .thumb{overflow:hidden;border-bottom:1px solid var(--line);}
.bigcard .thumb img{width:100%;height:216px;object-fit:cover;transition:transform .3s ease;}
.bigcard:hover .thumb img{transform:scale(1.03);}
.bc-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.bc-body p{color:var(--t-2);font-size:14.5px;}
.tag{
  align-self:flex-start;display:inline-block;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;
  border:1px solid var(--line-strong);color:var(--accent);background:rgba(198,248,78,.08);
}
.bc-foot{margin-top:auto;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t-3);}
.bc-foot i{font-size:11px;color:var(--primary);}

/* ---------- 三步流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.stepN{
  position:relative;background:var(--paper-card);border:1px solid var(--paper-line);
  border-radius:var(--r-card);padding:28px 24px;box-shadow:var(--shadow-paper);
  transition:transform .3s ease,border-color .3s ease;
}
.stepN:hover{transform:translateY(-3px);border-color:rgba(108,76,241,.4);}
.stepN .num{
  display:block;font-size:40px;font-weight:700;line-height:1;
  color:var(--primary);letter-spacing:-.03em;margin-bottom:18px;
}
.stepN h3{margin-bottom:10px;}
.stepN p{color:#5A6072;font-size:14.5px;}
.stepN::after{
  content:"";position:absolute;right:-14px;top:44px;width:28px;border-top:1px dashed #CFD3E2;
}
.stepN:last-child::after{display:none;}

/* ---------- 横向行列表 ---------- */
.rowlist{border-top:1px solid var(--line);}
.rowli{
  display:grid;grid-template-columns:48px 1fr 24px;align-items:center;gap:20px;
  padding:22px 8px;border-bottom:1px solid var(--line);
  transition:background .25s ease,padding .25s ease;
}
.rowli:hover{background:var(--ink-800);padding-left:18px;}
.ri{
  width:48px;height:48px;border-radius:12px;display:grid;place-items:center;
  background:var(--ink-700);border:1px solid var(--line);color:var(--accent);font-size:17px;
}
.rt{display:flex;flex-direction:column;gap:4px;min-width:0;}
.rt strong{font-size:16px;font-weight:700;}
.rt em{font-style:normal;font-size:14px;color:var(--t-2);}
.rarrow{color:var(--t-3);font-size:14px;transition:color .25s ease,transform .25s ease;}
.rowli:hover .rarrow{color:var(--accent);transform:translateX(4px);}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:280px 1fr;gap:56px;align-items:start;}
.faq-side h2{margin-bottom:16px;}
.faq-side p{color:var(--t-2);font-size:14.5px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  position:relative;cursor:pointer;list-style:none;
  padding:22px 48px 22px 18px;
  font-size:16px;font-weight:600;color:var(--t-1);
  transition:color .25s ease,padding .25s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:16px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--t-3);transition:color .25s ease;
}
.faq-item[open] summary{color:var(--primary);}
.faq-item[open] summary::after{content:"−";color:var(--accent);}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:22px;background:var(--accent);border-radius:0 3px 3px 0;
  transition:transform .25s ease;
}
.faq-item[open] summary::before{transform:translateY(-50%) scaleY(1);}
.faq-item p{padding:0 48px 22px 18px;color:var(--t-2);font-size:14.5px;max-width:760px;}

/* ---------- CTA ---------- */
.cta-sec{padding:0 0 96px;}
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-card);
  padding:36px 40px;box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
}
.cta-bar::before{
  content:"";position:absolute;right:-60px;top:-60px;width:200px;height:200px;
  background:radial-gradient(circle,rgba(108,76,241,.32),transparent 70%);
}
.cta-bar h2{font-size:clamp(22px,2.2vw,28px);margin-bottom:10px;position:relative;}
.cta-bar p{color:var(--t-2);font-size:14.5px;position:relative;}
.cta-bar .btn{position:relative;}

/* ---------- 页脚 ---------- */
.site-foot{border-top:1px solid var(--line);background:var(--ink-900);padding:56px 0 24px;margin-top:auto;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:36px;}
.fb-name{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px;color:var(--t-1);margin-bottom:14px;}
.mk{width:26px;height:26px;border-radius:8px;background:var(--primary);color:#fff;display:grid;place-items:center;font-size:13px;font-weight:700;}
.foot-brand p{color:var(--t-3);font-size:13px;line-height:1.85;max-width:400px;margin:0;}
.foot-col h4{font-size:13px;color:var(--t-2);margin:0 0 16px;font-weight:600;letter-spacing:.06em;}
.foot-col ul{display:grid;gap:11px;}
.foot-col a,.foot-col li{font-size:13px;color:var(--t-3);}
.foot-col a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.foot-bottom{
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:38px;padding-top:18px;
  font-size:13px;color:var(--t-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1399px){
  :root{--sidebar-w:240px;}
  .wrap{padding:0 32px;}
}
@media (max-width:1199px){
  :root{--sidebar-w:210px;}
  .sidebar{padding:20px 14px 18px;}
  .brand .bt em{display:none;}
  .hero-grid{gap:36px;}
  .faq-grid{grid-template-columns:220px 1fr;gap:36px;}
}
@media (max-width:991px){
  .mbar{display:flex;}
  .sidebar{transform:translateX(-100%);width:270px;box-shadow:0 0 40px rgba(0,0,0,.5);}
  .sidebar.open{transform:translateX(0);}
  .brand .bt em{display:block;}
  .app-main{margin-left:0;padding-top:56px;}
  .wrap{padding:0 22px;}
  .sec{padding:72px 0;}
  .strip{margin-top:48px;}
  .strip-grid{grid-template-columns:repeat(2,1fr);}
  .st:nth-child(2){border-right:0;}
  .st:nth-child(1),.st:nth-child(2){border-bottom:1px solid var(--line);}
  .grid-2{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;gap:16px;}
  .stepN::after{display:none;}
  .faq-grid{grid-template-columns:1fr;gap:28px;}
  .cta-sec{padding:0 0 72px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .foot-brand{grid-column:1 / -1;}
}
@media (max-width:767px){
  .hero{padding-top:20px;}
  .hero-grid{grid-template-columns:1fr;gap:28px;}
  .hero-art img{height:240px;}
  .hero .lead{font-size:15.5px;}
  .rowli{grid-template-columns:42px 1fr 20px;gap:14px;padding:18px 4px;}
  .ri{width:42px;height:42px;font-size:15px;}
  .rt strong{font-size:15px;}
  .rt em{font-size:13.5px;}
  .bigcard .thumb img{height:190px;}
  .cta-bar{padding:28px 24px;}
  .btn{height:48px;}
}
@media (max-width:520px){
  .wrap{padding:0 16px;}
  .sec{padding:56px 0;}
  .strip-grid{grid-template-columns:1fr;}
  .st{border-right:0;border-bottom:1px solid var(--line);}
  .st:last-child{border-bottom:0;}
  .sec-head{margin-bottom:30px;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;gap:6px;}
  .btns .btn{width:100%;}
  .bc-body{padding:20px;}
}

/* roulang page: article */
/* ================= 设计令牌 ================= */
:root{
  --ink-900:#0E1015;
  --ink-800:#161A23;
  --ink-700:#1C2130;
  --ink-600:#262C3A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#6C4CF1;
  --primary-h:#7C5CFF;
  --primary-d:#5A3AE0;
  --accent:#C6F84E;
  --hot:#FF5F7E;
  --t-1:#F2F4F8;
  --t-2:#A7AEC0;
  --t-3:#6E7686;
  --paper:#F6F7FB;
  --paper-card:#FFFFFF;
  --paper-t:#14161C;
  --paper-t2:#5A6070;
  --paper-line:#E5E7EF;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --nav-w:256px;
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.04),0 12px 28px rgba(0,0,0,.35);
  --ease:.25s ease;
}

/* ================= 基础重置 ================= */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--t-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease)}
img{display:block;max-width:100%;height:auto}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
section[id]{scroll-margin-top:84px}
::selection{background:rgba(108,76,241,.42);color:#fff}

/* ================= 通用容器与按钮 ================= */
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 clamp(20px,4vw,48px)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform var(--ease),background-color var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease);
}
.btn i{font-size:13px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-h);transform:translateY(-2px);color:#fff}
.btn-primary:active{background:var(--primary-d);transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--t-1)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-block{width:100%}
.tag-chip{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  border:1px solid rgba(198,248,78,.36);background:rgba(198,248,78,.08);
  color:var(--accent);font-size:12px;font-weight:600;letter-spacing:.04em;white-space:nowrap;
}

/* ================= 左侧 App Shell 导航 ================= */
.side-shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  display:flex;flex-direction:column;
  padding:26px 18px 22px;
  background:var(--ink-800);
  border-right:1px solid var(--line);
  z-index:80;overflow-y:auto;
  scrollbar-width:thin;scrollbar-color:#2C3346 transparent;
}
.side-shell::-webkit-scrollbar{width:6px}
.side-shell::-webkit-scrollbar-thumb{background:#2C3346;border-radius:3px}
.side-shell::-webkit-scrollbar-track{background:transparent}

.brand{display:flex;align-items:center;gap:12px;padding:2px 6px 0}
.brand .mk{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,#7C5CFF,#3C2A93);
  color:#fff;font-size:17px;font-weight:800;letter-spacing:-.02em;
}
.brand-txt{display:flex;flex-direction:column;line-height:1.28;min-width:0}
.brand-txt strong{font-size:15.5px;font-weight:700;letter-spacing:-.01em;color:var(--t-1)}
.brand-txt em{font-style:normal;font-size:12px;color:var(--t-3);letter-spacing:.08em}

.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:26px}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--t-2);
  transition:background-color var(--ease),color var(--ease);
}
.side-nav a i{width:20px;font-size:15px;text-align:center;color:var(--t-3);transition:color var(--ease)}
.side-nav a:hover{background:var(--ink-700);color:var(--t-1)}
.side-nav a:hover i{color:var(--accent)}
.side-nav a.active{background:var(--ink-700);color:var(--t-1);font-weight:600}
.side-nav a.active i{color:var(--accent)}
.side-nav a.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:2px;background:var(--accent);
}

.side-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.side-note{font-size:12px;color:var(--t-3);line-height:1.7;padding-left:2px}
.side-legal{font-size:12px;color:var(--t-3);letter-spacing:.02em}

/* ================= 移动端顶栏与抽屉 ================= */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  align-items:center;gap:12px;padding:0 14px;
  background:rgba(14,16,21,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
  z-index:90;
}
.burger{
  width:40px;height:40px;flex:0 0 40px;display:grid;place-items:center;
  background:transparent;border:1px solid var(--line);border-radius:10px;cursor:pointer;
  transition:border-color var(--ease),background-color var(--ease);
}
.burger span{display:block;width:16px;height:1.7px;background:var(--t-1);border-radius:2px;margin:2.4px 0;transition:transform var(--ease),opacity var(--ease)}
.burger:hover{border-color:var(--line-strong);background:var(--ink-700)}
.burger.is-open span:nth-child(1){transform:translateY(5.4px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-5.4px) rotate(-45deg)}
.mb-logo{
  display:flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:700;letter-spacing:-.01em;
  overflow:hidden;white-space:nowrap;text-overflow:ellipsis;flex:1 1 auto;min-width:0;
}
.mb-logo .mk{
  width:26px;height:26px;flex:0 0 26px;border-radius:8px;display:grid;place-items:center;
  background:linear-gradient(140deg,#7C5CFF,#3C2A93);color:#fff;font-size:13px;font-weight:800;
}
.mb-cta{height:36px;padding:0 14px;font-size:13.5px;flex:0 0 auto}
.nav-scrim{display:none}

/* ================= 主内容区 ================= */
.main{
  margin-left:var(--nav-w);
  min-height:100vh;
  display:flex;flex-direction:column;
  background:var(--ink-900);
}

/* ================= 文章头部 ================= */
.article-hero{
  position:relative;
  padding:60px 0 48px;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(180deg,rgba(14,16,21,.86),rgba(14,16,21,.97)),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 72%);
  mask-image:linear-gradient(180deg,#000,transparent 72%);
}
.article-hero .wrap{position:relative;z-index:1}
.reading{max-width:760px;margin:0 auto}

.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t-3);margin-bottom:22px}
.crumb a{color:var(--t-3)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:#3A4256}
.crumb .cur{color:var(--t-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}

.article-hero h1{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.26;
  font-weight:800;
  letter-spacing:-.02em;
  margin:18px 0 22px;
  color:var(--t-1);
  overflow-wrap:break-word;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--t-3)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--ink-600);flex:0 0 4px}
.meta-row .src{color:var(--t-2)}

/* ================= 正文阅读区 ================= */
.article-wrap{padding:52px 0 0}
.article-body{
  font-size:17.5px;
  line-height:1.85;
  color:#D9DEE9;
  overflow-wrap:break-word;
  word-break:break-word;
}
.article-body p{margin:0 0 1.4em}
.article-body h2{
  position:relative;
  margin:40px 0 18px;
  padding-left:16px;
  font-size:24px;
  line-height:1.42;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--t-1);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;
  border-radius:2px;background:var(--accent);
}
.article-body h3{margin:30px 0 12px;font-size:19px;line-height:1.5;font-weight:700;color:var(--t-1)}
.article-body h4{margin:24px 0 10px;font-size:17px;font-weight:700;color:var(--t-1)}
.article-body ul{margin:0 0 1.4em;padding-left:1.35em}
.article-body ol{margin:0 0 1.4em;padding-left:1.5em}
.article-body ul>li{list-style:disc}
.article-body ol>li{list-style:decimal}
.article-body li{margin:.42em 0}
.article-body li::marker{color:var(--accent)}
.article-body blockquote{
  margin:26px 0;padding:16px 22px;
  border-left:3px solid var(--primary);
  background:var(--ink-800);
  border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--t-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  margin:26px 0;border-radius:var(--r-img);
  border:1px solid var(--line);
}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--t-3);text-align:center;margin-top:10px}
.article-body a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:#DBFF76}
.article-body strong{color:var(--t-1);font-weight:700}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.article-body code{
  background:var(--ink-700);color:var(--accent);
  padding:.15em .45em;border-radius:6px;font-size:.9em;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body pre{
  margin:0 0 1.4em;padding:18px 20px;overflow-x:auto;
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-img);
}
.article-body pre code{background:none;padding:0;color:#D9DEE9;font-size:14.5px;line-height:1.7}
.article-body table{
  width:100%;border-collapse:collapse;margin:0 0 1.5em;
  font-size:15.5px;
}
.article-body th,.article-body td{
  border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top;
}
.article-body th{background:var(--ink-800);color:var(--t-1);font-weight:600}
.article-body td{color:var(--t-2)}

/* ================= 空状态 ================= */
.empty-state{
  max-width:600px;margin:0 auto;text-align:center;
  padding:56px 28px 64px;
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
}
.empty-state .es-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:16px;
  display:grid;place-items:center;
  background:var(--ink-700);border:1px solid var(--line);
  color:var(--t-3);font-size:20px;
}
.empty-state h2{font-size:22px;font-weight:700;margin-bottom:10px}
.empty-state p{font-size:14.5px;color:var(--t-3);line-height:1.8;margin-bottom:24px}

/* ================= 相关阅读（浅色区） ================= */
.related-sec{
  margin-top:64px;
  padding:72px 0 80px;
  background:var(--paper);
  color:var(--paper-t);
}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:30px;flex-wrap:wrap;
}
.sec-head h2{
  font-size:clamp(22px,2.4vw,30px);font-weight:800;letter-spacing:-.02em;
  color:var(--paper-t);
}
.sec-head p{font-size:14px;color:var(--paper-t2);margin-top:8px}
.more-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--primary);
  border-bottom:1px solid transparent;padding-bottom:2px;
  transition:border-color var(--ease),color var(--ease);
}
.more-link:hover{color:var(--primary-d);border-bottom-color:var(--primary-d)}
.more-link i{font-size:12px}

.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.pcard{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--paper-card);
  border:1px solid var(--paper-line);
  border-radius:var(--r-card);
  box-shadow:0 6px 18px rgba(20,22,28,.06);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.pcard:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(20,22,28,.12);border-color:#C7CDE0}
.pcard .thumb{aspect-ratio:16/9;overflow:hidden;background:#E9EBF3}
.pcard .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.pcard:hover .thumb img{transform:scale(1.03)}
.pcard .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.pcard .kicker{font-size:12px;font-weight:600;color:var(--primary);letter-spacing:.05em}
.pcard h3{
  font-size:17px;font-weight:700;line-height:1.45;color:var(--paper-t);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.pcard p{
  font-size:13.5px;line-height:1.75;color:var(--paper-t2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.pcard .pfoot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--paper-line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12.5px;color:var(--paper-t2);
}
.pcard .pfoot .go{color:var(--primary);font-weight:600}
.pcard:hover .pfoot .go{color:var(--primary-d)}

/* ================= 底部转化条 ================= */
.cta-strip{padding:64px 0 72px;background:var(--ink-900)}
.cta-strip-in{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:34px clamp(24px,3vw,40px);
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
}
.cta-strip-in h2{font-size:clamp(20px,2.2vw,26px);font-weight:800;letter-spacing:-.02em}
.cta-strip-in p{font-size:14px;color:var(--t-3);margin-top:8px}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.back-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--t-2);
}
.back-link:hover{color:var(--accent)}
.back-link i{font-size:12px}

/* ================= 页脚 ================= */
.site-foot{
  margin-top:auto;
  background:var(--ink-800);
  border-top:1px solid var(--line);
  padding:56px 0 24px;
}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:40px}
.foot-brand .fb-name{
  display:flex;align-items:center;gap:10px;
  font-size:16px;font-weight:700;letter-spacing:-.01em;margin-bottom:14px;
}
.foot-brand .mk{
  width:30px;height:30px;flex:0 0 30px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(140deg,#7C5CFF,#3C2A93);color:#fff;font-size:14px;font-weight:800;
}
.foot-brand p{font-size:13.5px;line-height:1.85;color:var(--t-3);max-width:430px}
.foot-col h4{font-size:14px;font-weight:700;color:var(--t-1);margin-bottom:16px;letter-spacing:.01em}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col li,.foot-col a{font-size:13.5px;color:var(--t-3)}
.foot-col a:hover{color:var(--primary-h);text-decoration:underline;text-underline-offset:3px}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--t-3);
}

/* ================= 响应式 ================= */
@media (max-width:1199.98px){
  .foot-grid{grid-template-columns:1.5fr 1fr 1fr;gap:32px}
}
@media (max-width:991.98px){
  .side-shell{
    width:272px;
    transform:translateX(-100%);
    transition:transform .28s ease;
    box-shadow:0 0 44px rgba(0,0,0,.55);
    z-index:100;
  }
  .side-shell.open{transform:translateX(0)}
  .nav-scrim{
    display:block;position:fixed;inset:0;z-index:95;
    background:rgba(6,8,12,.62);
    opacity:0;visibility:hidden;
    transition:opacity .28s ease,visibility .28s ease;
  }
  .nav-scrim.show{opacity:1;visibility:visible}
  .mobile-bar{display:flex}
  .main{margin-left:0;padding-top:56px}
  .article-hero{padding:44px 0 38px}
  .article-wrap{padding:40px 0 0}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .related-sec{padding:56px 0 64px;margin-top:52px}
  .cta-strip{padding:52px 0 60px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot-brand{grid-column:1/-1}
}
@media (max-width:767.98px){
  .article-hero h1{margin:14px 0 18px}
  .article-body{font-size:16.5px;line-height:1.82}
  .article-body h2{font-size:21px;margin:34px 0 16px}
  .article-body h3{font-size:18px}
  .cta-strip-in{flex-direction:column;align-items:flex-start;padding:28px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (max-width:575.98px){
  .grid-3{grid-template-columns:1fr}
  .article-hero{padding:36px 0 32px}
  .meta-row{font-size:13px;gap:8px}
  .btn{height:48px;font-size:15px}
  .mb-cta{height:36px;font-size:13px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px}
}

/* roulang page: category2 */
:root{
  --ink-900:#0E1015;
  --ink-800:#161A23;
  --ink-700:#1C2130;
  --ink-600:#262C3A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#6C4CF1;
  --primary-d:#5A3BDE;
  --accent:#C6F84E;
  --hot:#FF5F7E;
  --t-1:#F2F4F8;
  --t-2:#A7AEC0;
  --t-3:#6E7686;
  --paper:#F6F7FB;
  --paper-card:#FFFFFF;
  --paper-t:#14161C;
  --paper-line:#E5E7EF;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:inset 0 1px 0 rgba(255,255,255,.04), 0 12px 28px rgba(0,0,0,.35);
  --sh-paper:0 6px 18px rgba(20,22,28,.06);
  --sidebar-w:256px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--t-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input,select,textarea{font-family:inherit;font-size:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.25}
p{margin:0}
::selection{background:rgba(108,76,241,.4);color:#fff}

/* 滚动条 */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#2C3242;border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:#3A4257}

/* 布局骨架 */
.app{min-height:100vh}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.sec{padding:96px 0;border-top:1px solid var(--line)}
.sec:first-of-type{border-top:0}

/* 侧栏 */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--ink-800);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:26px 18px 20px;
  overflow-y:auto;
  z-index:1050;
}
.sb-brand{display:flex;align-items:center;gap:12px;padding:0 6px 22px;border-bottom:1px solid var(--line);margin-bottom:18px}
.sb-brand .mk{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:700;letter-spacing:-.02em;
}
.lg-txt{display:flex;flex-direction:column;line-height:1.15}
.lg-txt b{font-size:16px;font-weight:700;color:var(--t-1);letter-spacing:-.02em}
.lg-txt i{font-style:normal;font-size:12px;color:var(--t-3);margin-top:4px;letter-spacing:.06em}
.side-nav{display:flex;flex-direction:column;gap:4px;flex:1}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 14px;border-radius:10px;
  font-size:14.5px;color:var(--t-2);
  transition:background .2s ease,color .2s ease;
}
.side-nav a i{width:20px;font-size:15px;text-align:center;color:var(--t-3);transition:color .2s ease}
.side-nav a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:22px;border-radius:2px;background:var(--accent);
  transition:transform .22s ease;
}
.side-nav a:hover{color:var(--t-1);background:rgba(255,255,255,.04)}
.side-nav a:hover i{color:var(--t-2)}
.side-nav a.active{color:var(--t-1);background:rgba(108,76,241,.12)}
.side-nav a.active::before{transform:translateY(-50%) scaleY(1)}
.side-nav a.active i{color:var(--accent)}
.sb-foot{padding-top:18px;border-top:1px solid var(--line);margin-top:18px}
.sb-foot .sb-note{font-size:12px;line-height:1.7;color:var(--t-3);margin-top:12px}

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

/* 顶部移动栏 */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:1040;
  background:rgba(14,16,21,.94);
  border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 14px;
}
.topbar .burger,.topbar .tb-cta{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:var(--ink-800);color:var(--t-1);
  display:flex;align-items:center;justify-content:center;
}
.topbar .tb-logo{font-size:15px;font-weight:700;letter-spacing:-.02em;color:var(--t-1)}
.mask{display:none;position:fixed;inset:0;background:rgba(6,7,10,.6);z-index:1045}
.mask.on{display:block}

/* 按钮 */
.btn-brand,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-brand{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-brand:hover{background:var(--primary-d);border-color:var(--primary-d);transform:translateY(-2px);color:#fff}
.btn-brand:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--t-1);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-brand:focus-visible,.btn-ghost:focus-visible,.side-nav a:focus-visible,.foot-col a:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;
}
.sb-foot .btn-brand{width:100%}

/* 面包屑 */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t-3);margin-bottom:22px;flex-wrap:wrap}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:#3A4257}
.crumb .now{color:var(--t-2)}

/* 分类页头图区 */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:52px 0 60px}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center right;
  opacity:.20;filter:saturate(.9);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,16,21,.96) 0%,rgba(14,16,21,.86) 48%,rgba(14,16,21,.6) 100%);
}
.page-hero .wrap{position:relative;z-index:2}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.08em;color:var(--accent);
  text-transform:none;margin-bottom:16px;
}
.kicker::before{content:"";width:22px;height:1px;background:var(--accent)}
.page-hero h1{font-size:clamp(34px,4.6vw,56px);margin-bottom:16px}
.page-hero .lead{font-size:16px;color:var(--t-2);max-width:640px}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap;margin-top:34px;padding-top:26px;border-top:1px solid var(--line)}
.hero-stats .hs b{display:block;font-size:26px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.02em;color:var(--t-1)}
.hero-stats .hs span{font-size:13px;color:var(--t-3)}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px}

/* 区块标题 */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(26px,2.8vw,36px);margin-bottom:10px}
.sec-head p{font-size:15px;color:var(--t-2);max-width:560px}
.sec-head .link-more{font-size:14px;color:var(--accent);white-space:nowrap}
.sec-head .link-more:hover{text-decoration:underline;text-underline-offset:4px}

/* 标签 */
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;color:var(--t-2);border:1px solid var(--line-strong);background:rgba(255,255,255,.02);
}
.tag.accent{color:var(--accent);border-color:rgba(198,248,78,.32);background:rgba(198,248,78,.08)}
.tag.hot{color:var(--hot);border-color:rgba(255,95,126,.32);background:rgba(255,95,126,.08)}

/* 紧凑卡片（图左） */
.pack-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pack-card{
  display:flex;gap:16px;padding:18px;
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:transform .3s ease,border-color .3s ease;
}
.pack-card:hover{transform:translateY(-3px);border-color:rgba(198,248,78,.4)}
.pack-card .thumb{flex:0 0 104px;width:104px;height:92px;border-radius:var(--r-img);overflow:hidden;background:var(--ink-700)}
.pack-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;opacity:.92}
.pack-card:hover .thumb img{transform:scale(1.03)}
.pack-card .body{min-width:0;display:flex;flex-direction:column;gap:8px}
.pack-card h3{font-size:16.5px;font-weight:700;line-height:1.35}
.pack-card p{font-size:13.5px;color:var(--t-2);line-height:1.65}
.pack-card .meta{margin-top:auto;display:flex;align-items:center;gap:8px}

/* 阶段进度 */
.stage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px dashed rgba(255,255,255,.14);padding-top:0}
.stage{
  position:relative;padding:32px 26px 26px;
  border-right:1px dashed rgba(255,255,255,.12);
}
.stage:last-child{border-right:0}
.stage .num{
  font-size:40px;font-weight:700;line-height:1;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;margin-bottom:14px;
}
.stage h3{font-size:17px;margin-bottom:8px}
.stage p{font-size:13.5px;color:var(--t-2);line-height:1.7}
.stage .dot{
  position:absolute;top:-5px;left:26px;width:9px;height:9px;border-radius:999px;
  background:var(--accent);box-shadow:0 0 0 4px rgba(198,248,78,.12);
}

/* 适用对象列表 */
.fit-list{border-top:1px solid var(--line)}
.fit-row{
  display:flex;align-items:center;gap:20px;
  padding:22px 4px;border-bottom:1px solid var(--line);
  transition:background .2s ease,padding-left .2s ease;
}
.fit-row:hover{background:rgba(255,255,255,.02);padding-left:12px}
.fit-row .ic{
  flex:0 0 40px;width:40px;height:40px;border-radius:10px;
  background:var(--ink-700);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:16px;
}
.fit-row .txt{flex:1;min-width:0}
.fit-row .txt h3{font-size:16.5px;margin-bottom:4px}
.fit-row .txt p{font-size:13.5px;color:var(--t-2)}
.fit-row .arrow{color:var(--t-3);font-size:14px;transition:color .2s ease,transform .2s ease}
.fit-row:hover .arrow{color:var(--accent);transform:translateX(3px)}

/* 浅色区 */
.sec-paper{background:var(--paper);color:var(--paper-t);border-top:0}
.sec-paper .sec-head p{color:#5A6070}
.sec-paper .sec-head h2{color:var(--paper-t)}
.note-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.note-card{
  background:var(--paper-card);border:1px solid var(--paper-line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-paper);
  transition:transform .25s ease,box-shadow .25s ease;
}
.note-card:hover{transform:translateY(-3px);box-shadow:0 12px 26px rgba(20,22,28,.1)}
.note-card .nc-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.note-card h3{font-size:18px;color:var(--paper-t);margin-bottom:12px}
.note-card p{font-size:14px;color:#5A6070;line-height:1.75}
.note-card .tag{color:#4A5060;border-color:#D8DBE6;background:#F1F2F8}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:260px 1fr;gap:48px;align-items:start}
.faq-toc{display:flex;flex-direction:column;gap:4px;border-left:1px solid var(--line)}
.faq-toc a{
  padding:12px 18px;font-size:14.5px;color:var(--t-2);
  border-left:2px solid transparent;margin-left:-1px;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.faq-toc a:hover{color:var(--t-1);background:rgba(255,255,255,.03)}
.faq-toc a.on{color:var(--accent);border-left-color:var(--accent)}
.acc-item{border-bottom:1px solid var(--line)}
.acc-item:first-child{border-top:1px solid var(--line)}
.acc-btn{
  width:100%;background:transparent;border:0;text-align:left;
  padding:22px 4px 22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:16.5px;font-weight:600;color:var(--t-1);position:relative;
  transition:color .2s ease,padding-left .2s ease;
}
.acc-btn::before{
  content:"";position:absolute;left:-1px;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:24px;background:var(--accent);border-radius:2px;
  transition:transform .22s ease;
}
.acc-btn:hover{color:var(--accent)}
.acc-btn[aria-expanded="true"]{color:var(--primary);padding-left:16px}
.acc-btn[aria-expanded="true"]::before{transform:translateY(-50%) scaleY(1)}
.acc-btn .sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  border:1px solid var(--line-strong);color:var(--t-2);
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:600;
}
.acc-btn[aria-expanded="true"] .sign{border-color:rgba(108,76,241,.5);color:var(--primary)}
.acc-btn .sign::before{content:"+"}
.acc-btn[aria-expanded="true"] .sign::before{content:"−"}
.acc-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.acc-body{padding:0 40px 24px 16px;font-size:14.5px;color:var(--t-2);line-height:1.8}

/* CTA 条 */
.cta-band{
  background:var(--ink-800);border:1px solid var(--line);border-radius:20px;
  padding:40px 42px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:var(--sh-card);
}
.cta-band h2{font-size:clamp(22px,2.2vw,28px);margin-bottom:10px}
.cta-band p{font-size:14.5px;color:var(--t-2);max-width:600px}

/* 页脚 */
.site-foot{border-top:1px solid var(--line);background:#0B0D12;padding:56px 0 26px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;padding-bottom:36px;border-bottom:1px solid var(--line)}
.foot-brand .fb-name{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;margin-bottom:14px}
.foot-brand .fb-name .mk{
  width:30px;height:30px;border-radius:9px;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:15px;
}
.foot-brand p{font-size:13px;color:var(--t-3);line-height:1.8;max-width:400px}
.foot-col h4{font-size:14px;margin-bottom:16px;color:var(--t-1)}
.foot-col ul{display:flex;flex-direction:column;gap:10px}
.foot-col li{font-size:13px;color:var(--t-3)}
.foot-col a{font-size:13px;color:var(--t-3)}
.foot-col a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;font-size:13px;color:var(--t-3);
}

/* 响应式 */
@media (max-width:1199.98px){
  .pack-grid{grid-template-columns:repeat(2,1fr)}
  .faq-wrap{grid-template-columns:220px 1fr;gap:32px}
}
@media (max-width:991.98px){
  :root{--sidebar-w:280px}
  .sidebar{transform:translateX(-100%);transition:transform .28s ease;width:var(--sidebar-w)}
  .sidebar.open{transform:translateX(0)}
  .content{margin-left:0;padding-top:56px}
  .topbar{display:flex}
  .sec{padding:72px 0}
  .page-hero{padding:44px 0 48px}
  .stage-grid{grid-template-columns:repeat(2,1fr)}
  .stage:nth-child(2){border-right:0}
  .stage:nth-child(1),.stage:nth-child(2){border-bottom:1px dashed rgba(255,255,255,.12)}
  .note-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .faq-wrap{grid-template-columns:1fr}
  .faq-toc{flex-direction:row;overflow-x:auto;border-left:0;border-bottom:1px solid var(--line);padding-bottom:4px}
  .faq-toc a{white-space:nowrap;border-left:0;border-bottom:2px solid transparent;margin-left:0;padding:10px 12px}
  .faq-toc a.on{border-bottom-color:var(--accent)}
}
@media (max-width:767.98px){
  .wrap{padding:0 18px}
  .sec{padding:56px 0}
  .pack-grid{grid-template-columns:1fr}
  .note-grid{grid-template-columns:1fr}
  .stage-grid{grid-template-columns:1fr}
  .stage{border-right:0;border-bottom:1px dashed rgba(255,255,255,.12);padding:26px 0 22px}
  .stage:last-child{border-bottom:0}
  .stage .dot{left:0}
  .cta-band{padding:28px 22px}
  .btn-brand,.btn-ghost{width:100%;height:48px}
  .hero-cta{flex-direction:column}
  .hero-stats{gap:24px}
  .foot-grid{grid-template-columns:1fr}
  .fit-row{align-items:flex-start;gap:14px}
  .acc-body{padding-right:8px}
}

/* roulang page: category3 */
:root{
  --ink-900:#0E1015;
  --ink-800:#161A23;
  --ink-700:#1C2130;
  --ink-600:#262C3A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#6C4CF1;
  --primary-dark:#5A3ADF;
  --accent:#C6F84E;
  --hot:#FF5F7E;
  --t-1:#F2F4F8;
  --t-2:#A7AEC0;
  --t-3:#6E7686;
  --paper:#F6F7FB;
  --paper-card:#FFFFFF;
  --paper-t:#14161C;
  --paper-t2:#5A6070;
  --paper-line:#E5E7EF;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset,0 12px 28px rgba(0,0,0,.35);
  --shadow-light:0 6px 18px rgba(20,22,28,.06);
  --side-w:260px;
  --pad-y:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--t-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.7;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease}
a:hover{color:var(--accent)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.25}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
::selection{background:var(--primary);color:#fff}

.wrap{max-width:1240px;margin:0 auto;padding:0 32px}

/* ============ 侧栏导航 ============ */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--side-w);
  background:var(--ink-800);
  border-right:1px solid var(--line);
  padding:26px 18px 22px;
  display:flex;
  flex-direction:column;
  overflow-y:auto;
  z-index:1050;
  scrollbar-width:thin;
  scrollbar-color:var(--ink-600) transparent;
}
.side-nav::-webkit-scrollbar{width:6px}
.side-nav::-webkit-scrollbar-thumb{background:var(--ink-600);border-radius:3px}
.side-nav::-webkit-scrollbar-track{background:transparent}

.brand{display:flex;align-items:center;gap:12px;padding:0 8px 22px;border-bottom:1px solid var(--line);margin-bottom:20px}
.brand-mk{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:linear-gradient(150deg,var(--primary),#4B31C4);
  color:#fff;font-weight:700;font-size:19px;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.brand-txt{display:flex;flex-direction:column;line-height:1.3;min-width:0}
.brand-txt strong{font-size:14.5px;font-weight:700;color:var(--t-1);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-txt em{font-style:normal;font-size:12px;color:var(--t-3);letter-spacing:.04em}

.nav-label{font-size:11px;color:var(--t-3);letter-spacing:.14em;padding:0 10px;margin-bottom:10px}
.side-nav a.nav-item{
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;
  border-radius:10px;
  color:var(--t-2);
  font-size:14.5px;
  font-weight:500;
  position:relative;
  margin-bottom:4px;
  border-left:3px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.side-nav a.nav-item i{width:20px;text-align:center;font-size:15px;color:var(--t-3);transition:color .2s ease}
.side-nav a.nav-item:hover{background:var(--ink-700);color:var(--t-1)}
.side-nav a.nav-item:hover i{color:var(--t-2)}
.side-nav a.nav-item.active{
  background:var(--ink-700);
  color:var(--t-1);
  border-left-color:var(--accent);
  font-weight:600;
}
.side-nav a.nav-item.active i{color:var(--accent)}

.side-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--line)}
.btn-side{
  display:flex;align-items:center;justify-content:center;gap:8px;
  width:100%;height:44px;border-radius:var(--r-btn);
  background:var(--primary);color:#fff;font-size:14.5px;font-weight:600;
  border:none;transition:background .2s ease,transform .2s ease;
}
.btn-side:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px)}
.btn-side:active{transform:translateY(0)}
.side-note{margin-top:14px;font-size:11.5px;color:var(--t-3);line-height:1.7}
.side-note span{display:block}

/* ============ 移动端顶栏 ============ */
.mobile-bar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:56px;
  background:rgba(14,16,21,.94);
  border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;
  padding:0 14px;z-index:1060;
}
.mobile-bar .mb-logo{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:700}
.mobile-bar .mb-logo .mk{
  width:28px;height:28px;border-radius:8px;background:var(--primary);
  color:#fff;font-size:14px;display:flex;align-items:center;justify-content:center;
}
.mb-btn{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  background:transparent;border:none;color:var(--t-1);font-size:18px;border-radius:10px;
}
.mb-btn:hover{background:var(--ink-700)}
.nav-overlay{
  display:none;position:fixed;inset:0;background:rgba(6,7,10,.66);z-index:1040;
}
.nav-overlay.show{display:block}

/* ============ 主区 ============ */
.main{margin-left:var(--side-w);min-height:100vh}

.crumb{padding:26px 0 0}
.crumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--t-3);list-style:none;margin:0;padding:0}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li::after{content:"/";color:var(--ink-600)}
.crumb li:last-child::after{content:""}
.crumb a{color:var(--t-3)}
.crumb a:hover{color:var(--accent)}
.crumb .cur{color:var(--t-2)}

/* ============ Hero ============ */
.cat-hero{
  position:relative;
  margin-top:20px;
  border-radius:20px;
  overflow:hidden;
  border:1px solid var(--line);
  background-image:linear-gradient(100deg,rgba(14,16,21,.96) 8%,rgba(14,16,21,.72) 52%,rgba(14,16,21,.42) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  min-height:clamp(340px,44vh,460px);
  display:flex;
  align-items:center;
}
.cat-hero .inner{padding:44px 44px 42px;max-width:760px}
.tag-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 13px;border-radius:999px;
  border:1px solid rgba(198,248,78,.35);
  background:rgba(198,248,78,.09);
  color:var(--accent);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.cat-hero h1{
  font-size:clamp(34px,4.6vw,56px);
  margin:18px 0 14px;
  letter-spacing:-.03em;
}
.cat-hero .lead{font-size:16.5px;color:var(--t-2);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;align-items:center}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:46px;padding:0 26px;border-radius:var(--r-btn);
  background:var(--primary);color:#fff;font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background .2s ease,transform .2s ease;
}
.btn-main:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  background:transparent;color:var(--t-1);font-size:15px;font-weight:600;
  border:1px solid var(--line-strong);
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}

/* ============ 数据条 ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(3,1fr);
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--ink-800);margin-top:24px;overflow:hidden;
}
.stat-strip .st{padding:22px 24px;border-right:1px solid var(--line)}
.stat-strip .st:last-child{border-right:none}
.stat-strip .num{
  font-size:26px;font-weight:700;color:var(--t-1);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.stat-strip .num em{font-style:normal;font-size:14px;color:var(--t-3);font-weight:500;margin-left:5px;letter-spacing:0}
.stat-strip .cap{font-size:13px;color:var(--t-3);margin-top:4px}

/* ============ 区块 ============ */
.section{padding:var(--pad-y) 0 0}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:34px}
.sec-head h2{font-size:clamp(26px,2.8vw,36px)}
.sec-head .sub{font-size:14px;color:var(--t-3);margin-top:10px;max-width:560px}
.sec-head .more{font-size:14px;color:var(--t-2);border-bottom:1px solid var(--line-strong);padding-bottom:3px}
.sec-head .more:hover{color:var(--accent);border-color:var(--accent)}

/* ============ 公告条列 ============ */
.notice-list{border:1px solid var(--line);border-radius:var(--r-card);background:var(--ink-800);overflow:hidden}
.notice-row{
  display:flex;align-items:center;gap:22px;
  padding:22px 26px;
  border-bottom:1px solid var(--line);
  transition:background .22s ease,transform .22s ease;
}
.notice-row:last-child{border-bottom:none}
.notice-row:hover{background:var(--ink-700);transform:translateY(-2px)}
.notice-row .date{
  flex:0 0 96px;font-size:12.5px;color:var(--t-3);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.notice-row .date b{display:block;font-size:15px;color:var(--t-2);font-weight:700}
.notice-row .body{flex:1 1 auto;min-width:0}
.notice-row h3{font-size:16.5px;font-weight:700;color:var(--t-1);display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.notice-row p{font-size:13.5px;color:var(--t-2);margin-top:6px;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.notice-row .tail{flex:0 0 auto;display:flex;align-items:center;gap:14px}
.notice-row .tail i{color:var(--t-3);font-size:13px;transition:transform .22s ease,color .22s ease}
.notice-row:hover .tail i{color:var(--accent);transform:translateX(4px)}

.tag{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
  border:1px solid var(--line-strong);color:var(--t-2);background:rgba(255,255,255,.04);
  white-space:nowrap;
}
.tag.primary{border-color:rgba(108,76,241,.5);background:rgba(108,76,241,.14);color:#B9A8FF}
.tag.accent{border-color:rgba(198,248,78,.4);background:rgba(198,248,78,.1);color:var(--accent)}
.tag.hot{border-color:rgba(255,95,126,.5);background:rgba(255,95,126,.14);color:var(--hot)}

/* ============ 右侧小卡 ============ */
.side-stack{display:flex;flex-direction:column;gap:18px;position:sticky;top:24px}
.mini-card{
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--ink-800);overflow:hidden;
  transition:border-color .25s ease,transform .25s ease;
}
.mini-card:hover{border-color:rgba(198,248,78,.4);transform:translateY(-3px)}
.mini-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--ink-700)}
.mini-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.mini-card:hover .thumb img{transform:scale(1.03)}
.mini-card .mc-body{padding:18px 20px 20px}
.mini-card h4{font-size:16px;font-weight:700;color:var(--t-1)}
.mini-card p{font-size:13px;color:var(--t-2);margin-top:8px;line-height:1.6}
.mini-card .mc-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px}
.mini-card .mc-foot span{font-size:12px;color:var(--t-3)}
.mini-card .mc-foot i{font-size:12px;color:var(--t-3)}
.mini-card:hover .mc-foot i{color:var(--accent)}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--ink-800);padding:28px 26px;position:relative;
}
.step .idx{
  font-size:40px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1;
}
.step h3{font-size:18px;margin:18px 0 10px}
.step p{font-size:14px;color:var(--t-2);line-height:1.7}
.step::after{
  content:"";position:absolute;right:-24px;top:44px;width:24px;
  border-top:1px dashed var(--line-strong);
}
.step:last-child::after{display:none}

/* ============ FAQ ============ */
.faq-wrap{
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--ink-800);padding:10px 30px;
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:none}
.faq-q{
  width:100%;background:transparent;border:none;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0 22px 16px;
  font-size:16px;font-weight:600;color:var(--t-1);cursor:pointer;
  position:relative;transition:color .2s ease;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  background:var(--accent);border-radius:2px;opacity:0;transition:opacity .2s ease;
}
.faq-item.open .faq-q::before{opacity:1}
.faq-item.open .faq-q{color:var(--accent)}
.faq-q .sign{font-size:20px;font-weight:400;color:var(--t-3);flex:0 0 auto;transition:color .2s ease}
.faq-item.open .faq-q .sign{color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{padding:0 0 22px 16px;font-size:14.5px;color:var(--t-2);line-height:1.75;max-width:820px}

/* ============ CTA ============ */
.cta-band{
  margin-top:var(--pad-y);
  border:1px solid var(--line);border-radius:20px;
  background:linear-gradient(96deg,rgba(108,76,241,.2),rgba(14,16,21,.9) 62%),var(--ink-800);
  padding:44px 44px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
}
.cta-band h2{font-size:clamp(22px,2.3vw,30px);max-width:600px}
.cta-band p{font-size:14.5px;color:var(--t-2);margin-top:12px;max-width:560px}

/* ============ 页脚 ============ */
.site-foot{
  margin-top:var(--pad-y);
  border-top:1px solid var(--line);
  background:var(--ink-800);
  padding:56px 0 26px;
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px}
.foot-brand .fb-name{
  display:flex;align-items:center;gap:10px;
  font-size:16px;font-weight:700;color:var(--t-1);
}
.foot-brand .fb-name .mk{
  width:30px;height:30px;border-radius:9px;background:var(--primary);
  color:#fff;font-size:15px;display:flex;align-items:center;justify-content:center;
}
.foot-brand p{margin-top:16px;font-size:13px;color:var(--t-3);line-height:1.8;max-width:400px}
.foot-col h4{font-size:14px;color:var(--t-1);margin-bottom:16px;font-weight:700}
.foot-col ul li{font-size:13px;color:var(--t-3);margin-bottom:10px;line-height:1.6}
.foot-col ul li a{color:var(--t-3)}
.foot-col ul li a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.foot-bottom{
  margin-top:42px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:var(--t-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  :root{--side-w:240px;--pad-y:80px}
  .wrap{padding:0 26px}
  .notice-row .date{flex-basis:84px}
}
@media (max-width:991.98px){
  :root{--pad-y:64px}
  .side-nav{transform:translateX(-100%);transition:transform .3s ease;width:272px;box-shadow:0 0 40px rgba(0,0,0,.6)}
  .side-nav.open{transform:translateX(0)}
  .main{margin-left:0;padding-top:56px}
  .mobile-bar{display:flex}
  .wrap{padding:0 20px}
  .cat-hero .inner{padding:34px 28px 32px}
  .steps{grid-template-columns:1fr}
  .step::after{display:none}
  .side-stack{position:static;flex-direction:row;flex-wrap:wrap}
  .side-stack .mini-card{flex:1 1 240px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .foot-brand{grid-column:1 / -1}
}
@media (max-width:767.98px){
  :root{--pad-y:56px}
  .stat-strip{grid-template-columns:1fr}
  .stat-strip .st{border-right:none;border-bottom:1px solid var(--line)}
  .stat-strip .st:last-child{border-bottom:none}
  .notice-row{flex-wrap:wrap;gap:12px;padding:20px 20px}
  .notice-row .date{flex:0 0 auto}
  .notice-row .date b{display:inline;font-size:12.5px;color:var(--t-3);font-weight:500}
  .notice-row .tail{width:100%;justify-content:space-between}
  .cta-band{padding:32px 24px}
  .faq-wrap{padding:6px 20px}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;gap:8px}
}
@media (max-width:519.98px){
  .wrap{padding:0 16px}
  .cat-hero .inner{padding:28px 20px 28px}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
  .cta-band .btn-main{width:100%}
}