/* roulang page: index */
:root{
  --brand-900:#1B1550;
  --brand-700:#3A2C9E;
  --brand-500:#5B4BE0;
  --brand-100:#ECE9FB;
  --accent-500:#F2A63B;
  --accent-600:#D98916;
  --rose-500:#E85C8A;
  --bg:#F6F5FB;
  --surface:#FFFFFF;
  --surface-2:#FBFAFF;
  --ink:#191533;
  --ink-2:#4E4A63;
  --ink-3:#8A86A0;
  --line:#E7E4F3;
  --line-strong:#D6D2E8;
  --success:#1F9D6B;
  --warn:#D98916;
  --danger:#D3495C;
  --grad:linear-gradient(135deg,#3A2C9E 0%,#5B4BE0 55%,#8B6BE8 100%);
  --shadow-1:0 4px 16px rgba(27,21,80,.06);
  --shadow-2:0 14px 38px rgba(27,21,80,.10);
  --r-lg:24px;
  --r-md:20px;
  --r-sm:14px;
  --sidebar-w:232px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter",system-ui,-apple-system,sans-serif;
}
*,*::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:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand-500);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
button{font-family:inherit;font-size:inherit;color:inherit;border:0;background:none;cursor:pointer;}
:focus-visible{outline:3px solid rgba(91,75,224,.4);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(91,75,224,.18);}

/* ---------- 布局骨架 ---------- */
.shell{display:flex;min-height:100vh;}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--surface);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:24px 16px 20px;
  z-index:60;
  transition:width .2s ease;
}
.main{
  margin-left:var(--sidebar-w);
  flex:1;min-width:0;
  display:flex;flex-direction:column;
}
.container{
  width:100%;max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}

/* ---------- 侧栏品牌 ---------- */
.brand{display:flex;align-items:center;gap:10px;padding:6px 8px 22px;border-bottom:1px solid var(--line);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(91,75,224,.28);
}
.brand-mark svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:1.6;}
.brand-text{min-width:0;}
.brand-name{font-size:16px;font-weight:800;letter-spacing:-.01em;line-height:1.25;color:var(--ink);}
.brand-badge{
  display:inline-block;margin-top:4px;
  font-size:11px;line-height:1;font-weight:700;
  color:var(--brand-700);
  background:var(--brand-100);
  border-radius:999px;padding:4px 8px;
  white-space:nowrap;
}
.side-nav{margin-top:20px;display:flex;flex-direction:column;gap:6px;flex:1;}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:12px;
  color:var(--ink-2);font-size:14.5px;font-weight:600;
  transition:background .18s ease,color .18s ease;
  white-space:nowrap;overflow:hidden;
}
.nav-item:hover{background:var(--surface-2);color:var(--brand-700);text-decoration:none;}
.nav-item.is-active{background:var(--brand-100);color:var(--brand-700);}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--accent-500);
}
.nav-item svg{width:18px;height:18px;flex:0 0 18px;stroke:currentColor;fill:none;stroke-width:1.6;}
.side-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);}
.side-foot .btn{width:100%;justify-content:center;padding:0 12px;font-size:14px;}
.side-note{margin-top:10px;font-size:12px;line-height:1.6;color:var(--ink-3);text-align:center;}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;
  position:sticky;top:0;z-index:70;
  height:64px;background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;
  padding:0 16px;
}
.topbar .brand{padding:0;border:0;}
.hamburger{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  background:var(--surface);
}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}
.drawer{
  position:fixed;inset:0;z-index:80;
  background:rgba(27,21,80,.32);
  opacity:0;pointer-events:none;transition:opacity .2s ease;
}
.drawer.is-open{opacity:1;pointer-events:auto;}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:rgba(255,255,255,.98);
  border-left:1px solid var(--line);
  padding:24px 20px;
  display:flex;flex-direction:column;gap:8px;
  transform:translateX(100%);transition:transform .24s ease;
}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);font-size:18px;color:var(--ink-2);}
.drawer .nav-item{height:48px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;
  border-radius:999px;
  font-size:15px;font-weight:700;
  border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  cursor:pointer;
}
.btn-primary{
  background:var(--brand-500);color:#fff;
  box-shadow:0 8px 20px rgba(91,75,224,.28);
}
.btn-primary:hover{background:var(--brand-700);color:#fff;text-decoration:none;box-shadow:0 10px 26px rgba(91,75,224,.34);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:var(--surface);color:var(--brand-700);
  border-color:var(--line-strong);
}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-700);text-decoration:none;}
.btn-ghost:active{transform:translateY(1px);}
.btn-accent{
  background:var(--accent-500);color:#2A1E05;
  box-shadow:0 8px 20px rgba(217,137,22,.24);
}
.btn-accent:hover{background:var(--accent-600);color:#2A1E05;text-decoration:none;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:700;color:var(--brand-700);
  border-bottom:1px solid transparent;padding:4px 0;
}
.btn-text:hover{color:var(--brand-900);border-bottom-color:var(--brand-500);text-decoration:none;}
.btn-sm{min-height:40px;padding:0 16px;font-size:13.5px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(246,245,251,.97) 0%,rgba(246,245,251,.86) 44%,rgba(27,21,80,.22) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(91,75,224,.10) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.9;
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:48px;align-items:center;
  padding:84px 0 88px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.86);
  border:1px solid rgba(242,166,59,.5);
  border-radius:999px;
  padding:6px 14px;
  font-size:12.5px;font-weight:700;color:var(--brand-700);
  margin-bottom:20px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent-500);display:block;}
h1{
  font-size:46px;line-height:1.2;font-weight:800;letter-spacing:-.02em;
  color:var(--brand-900);max-width:14em;
}
.hero-sub{
  margin-top:18px;
  font-size:17px;line-height:1.8;color:var(--ink-2);
  max-width:32em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;align-items:center;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;
}
.stat{
  background:rgba(255,255,255,.94);
  border:1px solid rgba(242,166,59,.42);
  border-radius:999px;
  padding:9px 16px;display:flex;align-items:baseline;gap:8px;
  box-shadow:var(--shadow-1);
}
.stat span{font-size:12px;color:var(--ink-3);}
.stat strong{font-family:var(--font-num);font-size:14px;font-weight:700;color:var(--ink);}
.hero-visual{position:relative;}
.hero-visual .device{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.7);
  box-shadow:var(--shadow-2);
  background:var(--surface);
}
.hero-visual .device img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.hero-visual .float-card{
  position:absolute;left:-14px;bottom:-18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:16px;
  padding:12px 16px;
  box-shadow:var(--shadow-2);
  display:flex;align-items:center;gap:10px;
}
.float-card .dot{width:8px;height:8px;border-radius:50%;background:var(--success);}
.float-card p{font-size:12.5px;color:var(--ink-2);line-height:1.5;}
.float-card strong{display:block;font-size:13.5px;color:var(--ink);}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section.alt{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-head h2{
  font-size:32px;line-height:1.25;font-weight:800;letter-spacing:-.015em;color:var(--brand-900);
}
.section-head p{margin-top:10px;font-size:15px;color:var(--ink-2);max-width:44em;}
.section-link{font-size:14px;font-weight:700;color:var(--brand-700);white-space:nowrap;}
.section-link:hover{color:var(--brand-900);}

/* ---------- Bento 价值区 ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.bento-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  position:relative;overflow:hidden;
}
.bento-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.bento-card.big{grid-column:span 7;display:flex;flex-direction:column;justify-content:space-between;min-height:300px;}
.bento-col{grid-column:span 5;display:flex;flex-direction:column;gap:24px;}
.bento-card.mid{flex:1;min-height:0;}
.icon-box{
  width:44px;height:44px;border-radius:14px;
  background:var(--brand-100);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:16px;
}
.icon-box svg{width:22px;height:22px;stroke:var(--brand-700);fill:none;stroke-width:1.6;}
.bento-card h3{font-size:19px;font-weight:700;color:var(--ink);margin-bottom:10px;}
.bento-card p{font-size:14.5px;line-height:1.8;color:var(--ink-2);}
.bento-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px;}
.tag{
  display:inline-block;font-size:12px;font-weight:700;
  color:var(--brand-700);background:var(--brand-100);
  border-radius:8px;padding:5px 10px;
}
.tag.gold{background:rgba(242,166,59,.16);color:var(--accent-600);}
.tag.rose{background:rgba(232,92,138,.12);color:#B93A63;}

/* ---------- 轮播 ---------- */
.carousel-wrap{position:relative;}
.carousel-track{
  display:flex;gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;
  padding-bottom:6px;
}
.carousel-track::-webkit-scrollbar{display:none;}
.slide{
  flex:0 0 calc(50% - 10px);
  scroll-snap-align:start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease;
}
.slide:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.slide img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.slide-cap{padding:14px 18px;font-size:12.5px;color:var(--ink-3);border-top:1px solid var(--line);}
.carousel-nav{display:flex;gap:10px;}
.circle-btn{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line-strong);background:var(--surface);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand-700);transition:all .18s ease;
}
.circle-btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;}
.circle-btn:hover{background:var(--brand-500);border-color:var(--brand-500);color:#fff;}
.dots{display:none;justify-content:center;gap:8px;margin-top:18px;}
.dots i{width:8px;height:8px;border-radius:50%;background:var(--line-strong);display:block;transition:all .18s ease;}
.dots i.on{background:var(--brand-500);width:20px;border-radius:999px;}

/* ---------- 系统要求 ---------- */
.sys-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.sys-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:24px;
  box-shadow:var(--shadow-1);
}
.sys-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line);}
.sys-head h3{font-size:17px;font-weight:800;color:var(--ink);}
.sys-head .tag{font-size:11px;}
.sys-list{margin-top:4px;}
.sys-list dt{
  font-size:12.5px;font-weight:700;color:var(--ink-3);
  letter-spacing:.02em;margin-top:16px;
}
.sys-list dd{
  font-size:14px;color:var(--ink-2);line-height:1.75;
  margin-top:4px;padding-bottom:14px;border-bottom:1px solid var(--line);
}
.sys-list dd:last-child{border-bottom:0;padding-bottom:0;}

/* ---------- 下载按钮组 ---------- */
.download-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:32px;
  box-shadow:var(--shadow-1);
}
.download-main{display:flex;flex-wrap:wrap;align-items:center;gap:16px;justify-content:space-between;}
.download-main .btn-primary{min-height:56px;padding:0 28px;flex-direction:column;align-items:flex-start;gap:0;border-radius:16px;}
.download-main .btn-primary small{font-size:11.5px;font-weight:600;opacity:.82;line-height:1.2;}
.download-main .btn-primary strong{font-size:15.5px;line-height:1.3;}
.download-sub{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px;padding-top:20px;border-top:1px solid var(--line);}
.download-links{display:flex;flex-wrap:wrap;gap:20px;margin-top:18px;}
.download-links a{font-size:13px;color:var(--ink-3);}
.download-links a:hover{color:var(--brand-700);}

/* ---------- 评价墙 ---------- */
.review-wall{columns:2;column-gap:24px;}
.review{
  break-inside:avoid;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px;
  margin-bottom:24px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.review:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.stars{color:var(--accent-500);font-size:14px;letter-spacing:2px;line-height:1;}
.review p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--ink-2);}
.review-user{display:flex;align-items:center;gap:10px;margin-top:16px;}
.avatar{
  width:36px;height:36px;border-radius:50%;
  background:var(--brand-100);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;flex:0 0 36px;
}
.review-user .meta{font-size:12.5px;color:var(--ink-3);line-height:1.5;}
.review-user .meta strong{display:block;font-size:13.5px;color:var(--ink);font-weight:700;}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease;
  color:inherit;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);text-decoration:none;color:inherit;}
.news-thumb{aspect-ratio:16/9;background:var(--grad);position:relative;overflow:hidden;}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{
  font-size:16.5px;font-weight:700;line-height:1.55;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:13.5px;line-height:1.75;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:14px;border-top:1px solid var(--line);}
.news-foot time{font-size:12px;color:var(--ink-3);font-family:var(--font-num);}
.news-foot .arrow{color:var(--brand-500);font-size:14px;font-weight:700;}
.empty-state{
  grid-column:1/-1;
  background:var(--surface-2);
  border:1px dashed var(--line-strong);
  border-radius:var(--r-md);
  padding:52px 24px;
  display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
}
.empty-state svg{width:38px;height:38px;stroke:var(--brand-500);fill:none;stroke-width:1.5;}
.empty-state p{font-size:14.5px;color:var(--ink-2);}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;text-align:left;
  font-size:16px;font-weight:700;color:var(--ink);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand-700);}
.faq-ico{
  width:28px;height:28px;flex:0 0 28px;border-radius:50%;
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;color:var(--brand-700);
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .2s ease;
}
.faq-item.open .faq-ico{background:var(--brand-500);border-color:var(--brand-500);color:#fff;transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
.faq-a p{padding:0 0 22px;max-width:720px;font-size:15px;line-height:1.8;color:var(--ink-2);}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--grad);
  border-radius:var(--r-lg);
  padding:48px;
  color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:20px 20px;
}
.cta-band h2{position:relative;z-index:2;font-size:28px;line-height:1.35;font-weight:800;letter-spacing:-.01em;max-width:22em;}
.cta-band .cta-note{position:relative;z-index:2;margin-top:10px;font-size:13px;color:rgba(255,255,255,.82);}
.cta-band .btn{position:relative;z-index:2;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#16122B;
  border-top:2px solid var(--accent-500);
  margin-top:auto;
  color:#B8B4CC;
}
.footer-inner{padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{box-shadow:none;width:34px;height:34px;flex:0 0 34px;border-radius:10px;}
.footer-brand .brand-mark svg{width:18px;height:18px;}
.footer-brand strong{color:#fff;font-size:15.5px;font-weight:800;}
.footer-desc{font-size:13px;line-height:1.85;color:#B8B4CC;max-width:26em;}
.footer-col h4{font-size:13px;font-weight:700;color:var(--accent-500);margin-bottom:14px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:13px;color:#B8B4CC;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  margin-top:48px;padding:20px 0;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:#8A86A0;
}
.footer-bottom a{color:#8A86A0;}
.footer-bottom a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .container{padding:0 32px;}
}
@media (max-width:1199px){
  :root{--sidebar-w:76px;}
  .sidebar{padding:20px 10px;align-items:center;}
  .brand{justify-content:center;padding:6px 0 18px;width:100%;}
  .brand-text,.side-note{display:none;}
  .nav-item{justify-content:center;padding:0;height:46px;}
  .nav-item .nav-txt{display:none;}
  .side-foot .btn{padding:0;min-width:46px;width:46px;font-size:0;}
  .side-foot .btn::after{content:"↓";font-size:17px;}
  .hero-inner{gap:32px;}
  h1{font-size:38px;}
}
@media (max-width:991px){
  .sidebar{display:none;}
  .topbar{display:flex;}
  .main{margin-left:0;}
  .container{padding:0 24px;}
  .hero-inner{grid-template-columns:1fr;padding:56px 0 64px;gap:36px;}
  h1{font-size:34px;max-width:none;}
  .hero-visual .float-card{left:12px;bottom:-14px;}
  .section{padding:64px 0;}
  .bento-card.big{grid-column:span 12;min-height:0;}
  .bento-col{grid-column:span 12;}
  .sys-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .review-wall{columns:1;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:36px;}
  .cta-band h2{font-size:24px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .section{padding:52px 0;}
  h1{font-size:29px;line-height:1.25;}
  .hero-sub{font-size:15.5px;}
  .section-head h2{font-size:24px;}
  .section-head{margin-bottom:26px;}
  .slide{flex:0 0 100%;}
  .carousel-nav{display:none;}
  .dots{display:flex;}
  .news-grid{grid-template-columns:1fr;}
  .download-main .btn-primary{width:100%;}
  .download-sub .btn{flex:1 1 46%;}
  .bento-card{padding:22px;}
  .cta-band{padding:28px;flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-inner{padding:44px 0 0;}
  .btn{min-height:48px;}
  .faq-q{font-size:15px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .hero-stats{gap:8px;}
  .stat{padding:8px 12px;}
  .download-panel{padding:22px;}
  .hero-visual .float-card{display:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --brand-900:#1B1550;
  --brand-700:#3A2C9E;
  --brand-500:#5B4BE0;
  --brand-100:#ECE9FB;
  --accent-500:#F2A63B;
  --accent-600:#D98916;
  --rose-500:#E85C8A;
  --bg:#F6F5FB;
  --surface:#FFFFFF;
  --surface-2:#FBFAFF;
  --ink:#191533;
  --ink-2:#4E4A63;
  --ink-3:#8A86A0;
  --line:#E7E4F3;
  --line-strong:#D6D2E8;
  --success:#1F9D6B;
  --warn:#D98916;
  --danger:#D3495C;
  --grad:linear-gradient(135deg,#3A2C9E 0%,#5B4BE0 55%,#8B6BE8 100%);
  --shadow-1:0 4px 16px rgba(27,21,80,.06);
  --shadow-2:0 14px 38px rgba(27,21,80,.10);
  --r-lg:24px;
  --r-md:20px;
  --r-sm:14px;
  --side:232px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-500);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.02em;color:var(--ink);}
p{margin:0;}
:focus-visible{outline:3px solid rgba(91,75,224,.4);outline-offset:2px;border-radius:6px;}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--side);
  background:var(--surface);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  padding:24px 16px 20px;
  z-index:60;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:6px 8px 20px;
  text-decoration:none;
}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:38px;height:38px;
  flex:0 0 38px;
  border-radius:12px;
  background:var(--grad);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 8px 18px rgba(91,75,224,.28);
}
.brand-mark svg{width:21px;height:21px;fill:#fff;stroke:none;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:.01em;}
.brand-text em{
  font-style:normal;
  font-size:11px;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--accent-600);
  margin-top:3px;
}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:4px;}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:11px;
  height:44px;
  padding:0 12px;
  border-radius:12px;
  color:var(--ink-2);
  font-size:14.5px;
  font-weight:600;
  text-decoration:none;
  transition:background .18s ease,color .18s ease;
}
.nav-item svg{
  width:19px;height:19px;
  flex:0 0 19px;
  fill:none;
  stroke:currentColor;
  stroke-width:1.6;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.nav-item:hover{background:var(--brand-100);color:var(--brand-700);text-decoration:none;}
.nav-item.is-active{background:var(--brand-100);color:var(--brand-700);font-weight:700;}
.nav-item.is-active::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  border-radius:3px;
  background:var(--accent-500);
}
.sidebar-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);}
.sidebar-note{
  font-size:12px;
  color:var(--ink-3);
  line-height:1.6;
  margin-top:10px;
  text-align:center;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  text-decoration:none;
  border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn-primary{
  background:var(--brand-500);
  color:#fff;
  box-shadow:0 8px 20px rgba(91,75,224,.28);
}
.btn-primary:hover{background:linear-gradient(135deg,#4536B4 0%,#6B5AE8 60%,#9878F0 100%);color:#fff;box-shadow:0 12px 26px rgba(91,75,224,.34);}
.btn-primary:active{transform:translateY(1px);}
.btn-secondary{
  background:var(--surface);
  color:var(--brand-700);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-1);
}
.btn-secondary:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-700);}
.btn-secondary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--ink-2);border-color:var(--line);}
.btn-ghost:hover{background:var(--surface-2);color:var(--brand-700);border-color:var(--brand-500);}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;border-radius:12px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;}

/* ============ 顶部移动导航 ============ */
.topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:70;
  height:64px;
  padding:0 16px;
  align-items:center;
  justify-content:space-between;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.brand-sm{padding:0;}
.brand-sm .brand-mark{width:32px;height:32px;flex:0 0 32px;border-radius:10px;}
.brand-sm .brand-mark svg{width:18px;height:18px;}
.brand-sm .brand-text strong{font-size:15px;}
.menu-btn{
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--surface);
}
.menu-btn svg{width:20px;height:20px;stroke:var(--ink);stroke-width:1.8;fill:none;stroke-linecap:round;}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(27,21,80,.36);
  opacity:0;
  pointer-events:none;
  transition:opacity .22s ease;
  z-index:65;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}

/* ============ 主体布局 ============ */
.main{
  margin-left:var(--side);
  min-height:100vh;
  padding:40px 40px 0;
}
.container{max-width:1200px;margin:0 auto;padding:0;}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-3);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--ink-3);text-decoration:none;}
.breadcrumb a:hover{color:var(--brand-500);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:var(--line-strong);}
.breadcrumb .cur{color:var(--ink-2);max-width:60%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 阅读区布局 ============ */
.reading-wrap{
  display:grid;
  grid-template-columns:minmax(0,760px) 300px;
  gap:48px;
  align-items:start;
  justify-content:center;
}
.article-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:40px 44px 44px;
  box-shadow:var(--shadow-1);
}
.article-title{
  font-size:36px;
  font-weight:800;
  line-height:1.28;
  letter-spacing:-.02em;
  color:var(--ink);
  margin-bottom:18px;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--ink-3);
  padding-bottom:26px;
  border-bottom:1px solid var(--line);
  margin-bottom:8px;
}
.meta-badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:8px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:12px;
  font-weight:700;
  text-decoration:none;
}
.meta-dot{color:var(--line-strong);}

/* ============ 正文排版 ============ */
.article-body{
  font-size:17px;
  line-height:1.9;
  color:var(--ink-2);
  margin-top:26px;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:18px 0;}
.article-body h2{
  position:relative;
  font-size:24px;
  font-weight:800;
  color:var(--ink);
  margin:40px 0 16px;
  padding-left:16px;
  letter-spacing:-.01em;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:4px;
  border-radius:4px;
  background:var(--accent-500);
}
.article-body h3{
  font-size:20px;
  font-weight:800;
  color:var(--ink);
  margin:30px 0 12px;
}
.article-body h4{
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  margin:24px 0 10px;
}
.article-body a{color:var(--brand-500);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-700);}
.article-body strong{color:var(--ink);font-weight:700;}
.article-body ul,.article-body ol{margin:18px 0;padding-left:22px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:9px 0;padding-left:2px;}
.article-body li::marker{color:var(--brand-500);}
.article-body blockquote{
  margin:26px 0;
  padding:18px 22px;
  border-left:3px solid var(--brand-500);
  background:var(--surface-2);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--ink-2);
  font-size:16px;
}
.article-body blockquote p{margin:8px 0;}
.article-body img{border-radius:16px;margin:24px auto;max-width:100%;height:auto;box-shadow:var(--shadow-1);}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px;line-height:1.6;}
.article-body pre{
  background:#F3F1FA;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:18px;
  overflow-x:auto;
  font-size:13.5px;
  line-height:1.7;
  margin:22px 0;
}
.article-body code{
  background:#F3F1FA;
  border-radius:6px;
  padding:2px 6px;
  font-size:.92em;
  color:var(--brand-700);
}
.article-body pre code{background:none;padding:0;color:var(--ink-2);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0;}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 10px;text-align:left;}
.article-body th{color:var(--ink);font-weight:700;background:var(--surface-2);}

/* 文内 CTA 条 */
.inline-cta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin:32px 0;
  padding:22px 24px;
  border-radius:var(--r-md);
  background:linear-gradient(135deg,rgba(236,233,251,.9) 0%,rgba(251,250,255,.9) 100%);
  border:1px solid var(--line);
}
.inline-cta h4{font-size:16px;font-weight:800;margin-bottom:4px;}
.inline-cta p{font-size:13.5px;color:var(--ink-3);line-height:1.7;}

/* ============ 空态 ============ */
.empty-state{
  margin:28px 0 8px;
  padding:48px 24px;
  text-align:center;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--r-md);
}
.empty-state svg{width:44px;height:44px;stroke:var(--ink-3);fill:none;stroke-width:1.6;margin:0 auto 16px;display:block;stroke-linecap:round;stroke-linejoin:round;}
.empty-state p{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:18px;}

/* ============ 右侧粘性卡 ============ */
.article-aside{position:sticky;top:32px;display:flex;flex-direction:column;gap:20px;}
.aside-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:22px;
  box-shadow:var(--shadow-1);
}
.aside-card h3{font-size:15px;font-weight:800;margin-bottom:6px;}
.aside-card .aside-sub{font-size:12.5px;color:var(--ink-3);line-height:1.7;margin-bottom:16px;}
.aside-list{display:flex;flex-direction:column;gap:2px;margin-top:14px;}
.aside-list a{
  display:flex;
  align-items:center;
  gap:9px;
  padding:9px 10px;
  border-radius:10px;
  font-size:13.5px;
  color:var(--ink-2);
  font-weight:600;
  text-decoration:none;
  transition:background .18s ease,color .18s ease;
}
.aside-list a::before{
  content:"";
  width:5px;height:5px;
  border-radius:50%;
  background:var(--accent-500);
  flex:0 0 5px;
}
.aside-list a:hover{background:var(--brand-100);color:var(--brand-700);text-decoration:none;}
.aside-meta{display:flex;justify-content:space-between;font-size:12.5px;color:var(--ink-3);padding:8px 0;border-bottom:1px dashed var(--line);}
.aside-meta:last-of-type{border-bottom:0;}
.aside-meta b{color:var(--ink);font-weight:700;}

/* ============ 上一页/下一页 ============ */
.page-nav{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  margin-top:28px;
}
.page-nav a{
  display:block;
  padding:18px 20px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  text-decoration:none;
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.page-nav a:hover{border-color:var(--brand-500);box-shadow:var(--shadow-1);transform:translateY(-2px);text-decoration:none;}
.page-nav .pn-label{display:block;font-size:12px;color:var(--ink-3);margin-bottom:6px;letter-spacing:.04em;}
.page-nav .pn-title{display:block;font-size:14.5px;font-weight:700;color:var(--ink);line-height:1.5;}

/* ============ 相关推荐 ============ */
.related{margin-top:64px;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:26px;
  flex-wrap:wrap;
}
.section-head h2{font-size:26px;font-weight:800;}
.section-head .head-link{font-size:14px;font-weight:700;color:var(--brand-500);text-decoration:none;}
.section-head .head-link:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:4px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  text-decoration:none;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong);text-decoration:none;}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--grad);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.tag{
  display:inline-flex;
  align-items:center;
  align-self:flex-start;
  height:24px;
  padding:0 10px;
  border-radius:8px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:12px;
  font-weight:700;
}
.rel-title{
  font-size:15.5px;
  font-weight:700;
  color:var(--ink);
  line-height:1.55;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-desc{
  font-size:13px;
  color:var(--ink-3);
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-foot{
  margin-top:auto;
  padding-top:12px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:12px;
  color:var(--ink-3);
}
.rel-foot .arrow{color:var(--brand-500);font-weight:700;}

/* ============ 底部转化条 ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  margin:72px 0 0;
  border-radius:var(--r-lg);
  background:var(--grad);
  color:#fff;
  padding:52px 48px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    radial-gradient(circle at 12% 22%, rgba(255,255,255,.55) 1px, transparent 1.6px),
    radial-gradient(circle at 68% 14%, rgba(255,255,255,.4) 1px, transparent 1.6px),
    radial-gradient(circle at 84% 72%, rgba(255,255,255,.45) 1px, transparent 1.6px),
    radial-gradient(circle at 34% 84%, rgba(255,255,255,.3) 1px, transparent 1.6px);
  opacity:.5;
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{font-size:28px;font-weight:800;color:#fff;margin-bottom:10px;letter-spacing:-.01em;}
.cta-band p{font-size:14px;color:rgba(255,255,255,.82);line-height:1.8;max-width:560px;}
.cta-band .btn-light{
  background:#fff;
  color:var(--brand-700);
  box-shadow:0 10px 26px rgba(0,0,0,.18);
}
.cta-band .btn-light:hover{background:#F4F2FF;color:var(--brand-900);}
.cta-band .cta-note{
  display:block;
  margin-top:12px;
  font-size:12.5px;
  color:rgba(255,255,255,.7);
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:72px;
  background:#16122B;
  border-top:2px solid var(--accent-500);
  color:#B8B4CC;
  margin-left:calc(-1 * var(--side) - 80px);
  padding-left:calc(var(--side) + 80px);
}
.footer-inner{padding:56px 0 0;}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;background:var(--grad);}
.footer-brand strong{color:#fff;font-size:15.5px;font-weight:800;letter-spacing:.01em;}
.footer-desc{font-size:13px;line-height:1.85;color:#B8B4CC;max-width:320px;}
.footer-col h4{font-size:13px;color:var(--accent-500);font-weight:700;letter-spacing:.08em;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:13px;color:#B8B4CC;text-decoration:none;transition:color .18s ease;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 28px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-size:12px;
  color:#8B86A8;
}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .reading-wrap{grid-template-columns:minmax(0,1fr) 290px;gap:36px;}
  .article-card{padding:36px 36px 40px;}
}
@media (max-width:1199px){
  .article-aside{display:none;}
  .reading-wrap{grid-template-columns:minmax(0,800px);justify-content:start;}
  .main{padding:36px 32px 0;}
}
@media (max-width:991px){
  .sidebar{
    transform:translateX(-100%);
    transition:transform .26s ease;
    width:264px;
    box-shadow:var(--shadow-2);
    padding-top:20px;
  }
  .sidebar.is-open{transform:translateX(0);}
  .topbar{display:flex;}
  .main{margin-left:0;padding:26px 24px 0;}
  .site-footer{margin-left:-24px;padding-left:24px;}
  .article-title{font-size:30px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:40px 32px;}
  .cta-band h2{font-size:24px;}
}
@media (max-width:767px){
  .main{padding:20px 16px 0;}
  .site-footer{margin-left:-16px;padding-left:16px;}
  .article-card{padding:24px 20px 28px;border-radius:var(--r-md);}
  .article-title{font-size:26px;line-height:1.32;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:21px;margin-top:32px;}
  .article-body h3{font-size:18px;}
  .page-nav{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px 24px;border-radius:var(--r-md);}
  .cta-band h2{font-size:22px;}
  .cta-band .btn-light{width:100%;}
  .section-head h2{font-size:22px;}
  .inline-cta{padding:18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (max-width:480px){
  .main{padding:16px 14px 0;}
  .site-footer{margin-left:-14px;padding-left:14px;}
  .article-card{padding:20px 16px 24px;}
  .article-title{font-size:23px;}
  .breadcrumb{font-size:12px;}
  .breadcrumb .cur{max-width:50%;}
}

/* roulang page: category1 */
:root{
  --brand-900:#1B1550;
  --brand-700:#3A2C9E;
  --brand-500:#5B4BE0;
  --brand-100:#ECE9FB;
  --accent-500:#F2A63B;
  --accent-600:#D98916;
  --rose-500:#E85C8A;
  --bg:#F6F5FB;
  --surface:#FFFFFF;
  --surface-2:#FBFAFF;
  --ink:#191533;
  --ink-2:#4E4A63;
  --ink-3:#8A86A0;
  --line:#E7E4F3;
  --line-strong:#D6D2E8;
  --success:#1F9D6B;
  --warn:#D98916;
  --danger:#D3495C;
  --grad:linear-gradient(135deg,#3A2C9E 0%,#5B4BE0 55%,#8B6BE8 100%);
  --r-lg:24px;
  --r-md:20px;
  --r-sm:14px;
  --shadow-1:0 4px 16px rgba(27,21,80,.06);
  --shadow-2:0 14px 38px rgba(27,21,80,.10);
  --sidebar:232px;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-500);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{list-style:none;}
:focus-visible{outline:3px solid rgba(91,75,224,.40);outline-offset:2px;}
::selection{background:rgba(91,75,224,.18);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ============ 布局 ============ */
.layout{min-height:100vh;}
.site-main{margin-left:var(--sidebar);}
.site-footer{margin-left:var(--sidebar);}

/* ============ 侧栏 ============ */
.sidebar{
  position:fixed;top:0;left:0;
  width:var(--sidebar);
  height:100vh;
  background:var(--surface);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:24px 16px;
  z-index:60;
}
.brand{
  display:flex;align-items:center;gap:10px;
  padding:6px 8px 20px;
  color:var(--ink);
}
.brand:hover{text-decoration:none;color:var(--ink);}
.brand-mark{
  width:36px;height:36px;flex:none;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--brand-100);
  color:var(--brand-500);
}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linejoin:round;stroke-linecap:round;}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:15px;font-weight:800;letter-spacing:.02em;}
.brand-text em{
  font-style:normal;
  font-size:11px;
  font-weight:600;
  color:var(--brand-500);
  background:var(--brand-100);
  border-radius:6px;
  padding:1px 6px;
  margin-top:4px;
  align-self:flex-start;
  letter-spacing:.04em;
}

.side-nav{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:10px;
  height:44px;
  padding:0 12px;
  border-radius:12px;
  color:var(--ink-2);
  font-size:14px;
  font-weight:600;
  transition:background .18s ease,color .18s ease;
}
.nav-item svg{width:19px;height:19px;flex:none;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.nav-item:hover{background:var(--surface-2);color:var(--brand-700);text-decoration:none;}
.nav-item.is-active{background:var(--brand-100);color:var(--brand-700);}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:3px;background:var(--accent-500);
}
.nav-txt{white-space:nowrap;}

.sidebar-foot{margin-top:auto;padding-top:20px;}
.sidebar-note{font-size:12px;color:var(--ink-3);line-height:1.6;margin-top:10px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;
  padding:0 24px;
  border-radius:999px;
  font-size:15px;font-weight:700;
  border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand-500);color:#fff;box-shadow:0 8px 20px rgba(91,75,224,.28);}
.btn-primary:hover{background:var(--brand-700);color:#fff;box-shadow:0 10px 26px rgba(91,75,224,.34);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--line-strong);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);border-color:var(--brand-500);}
.btn-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.42);}
.btn-light:hover{background:#fff;color:var(--brand-700);border-color:#fff;}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 移动顶栏与抽屉 ============ */
.mobile-top{
  display:none;
  position:fixed;top:0;left:0;right:0;height:64px;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;
  padding:0 20px;z-index:80;
}
.mobile-brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:15px;color:var(--ink);}
.mobile-brand:hover{text-decoration:none;color:var(--ink);}
.mobile-brand .brand-mark{width:30px;height:30px;border-radius:10px;}
.hamburger{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-2);transition:transform .2s ease,opacity .2s ease;}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:rgba(255,255,255,.98);
  border-left:1px solid var(--line);
  box-shadow:var(--shadow-2);
  z-index:90;
  padding:88px 20px 28px;
  display:flex;flex-direction:column;gap:6px;
  transform:translateX(102%);
  transition:transform .26s ease;
}
.drawer.is-open{transform:translateX(0);}
.drawer .nav-item{height:48px;font-size:15px;}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);}
.backdrop{
  position:fixed;inset:0;background:rgba(27,21,80,.34);
  opacity:0;pointer-events:none;transition:opacity .26s ease;z-index:85;
}
.backdrop.is-open{opacity:1;pointer-events:auto;}

/* ============ Hero ============ */
.cat-hero{
  position:relative;
  overflow:hidden;
  display:flex;align-items:center;
  min-height:280px;
  padding:56px 0;
  color:#fff;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(27,21,80,.95) 0%,rgba(27,21,80,.88) 46%,rgba(58,44,158,.62) 100%);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(circle at 18% 26%,rgba(255,255,255,.55) 0 1px,transparent 1.5px),
    radial-gradient(circle at 62% 68%,rgba(242,166,59,.55) 0 1px,transparent 1.5px),
    radial-gradient(circle at 84% 22%,rgba(255,255,255,.42) 0 1px,transparent 1.5px),
    radial-gradient(circle at 38% 84%,rgba(255,255,255,.36) 0 1px,transparent 1.5px);
  opacity:.7;
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.72);
  margin-bottom:18px;
}
.breadcrumb a{color:rgba(255,255,255,.86);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:rgba(255,255,255,.45);}
.cat-hero h1{
  font-size:46px;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.2;
  max-width:820px;
  color:#fff;
}
.cat-hero .hero-lead{
  margin-top:16px;
  max-width:760px;
  font-size:16px;
  line-height:1.9;
  color:rgba(255,255,255,.86);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}

/* ============ 板块 ============ */
.section{padding:88px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:40px;flex-wrap:wrap;
}
.eyebrow{
  font-size:12px;font-weight:800;letter-spacing:.14em;
  color:var(--brand-500);text-transform:uppercase;
}
.section-title{
  font-size:32px;font-weight:800;line-height:1.3;letter-spacing:-.01em;
  margin-top:10px;color:var(--ink);
}
.section-sub{margin-top:12px;font-size:15px;color:var(--ink-2);max-width:680px;}
.text-link{font-size:14px;font-weight:700;color:var(--brand-500);white-space:nowrap;}
.text-link:hover{color:var(--brand-700);}

/* ============ 卡片网格 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.card-media{aspect-ratio:16/9;background:var(--grad);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.tag{
  align-self:flex-start;
  font-size:12px;font-weight:700;
  color:var(--brand-700);
  background:var(--brand-100);
  border-radius:8px;
  padding:3px 10px;
  letter-spacing:.02em;
}
.card-title{font-size:19px;font-weight:800;line-height:1.45;color:var(--ink);}
.card-text{font-size:14px;color:var(--ink-2);line-height:1.8;}
.card-more{
  margin-top:auto;
  padding-top:8px;
  font-size:14px;font-weight:700;color:var(--brand-500);
  display:flex;align-items:center;justify-content:space-between;
}
.card-more .arrow{transition:transform .18s ease;}
.card:hover .card-more .arrow{transform:translateX(4px);}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.step{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px 24px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:38px;height:38px;padding:0 10px;
  border-radius:12px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:14px;font-weight:800;letter-spacing:.04em;
  margin-bottom:16px;
}
.step h3{font-size:17px;font-weight:800;line-height:1.5;margin-bottom:8px;}
.step p{font-size:14px;color:var(--ink-2);line-height:1.8;}

/* ============ 排查区 ============ */
.split{display:grid;grid-template-columns:minmax(0,1fr) 356px;gap:32px;align-items:start;}
.trouble-list{display:flex;flex-direction:column;}
.trouble-item{
  display:grid;grid-template-columns:44px minmax(0,1fr);gap:16px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
}
.trouble-item:first-child{padding-top:0;}
.trouble-item:last-child{border-bottom:0;padding-bottom:0;}
.trouble-idx{
  width:36px;height:36px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:var(--surface);
  border:1px solid var(--line-strong);
  color:var(--brand-700);
  font-size:13px;font-weight:800;
}
.trouble-item h3{font-size:16px;font-weight:800;margin-bottom:6px;}
.trouble-item p{font-size:14px;color:var(--ink-2);line-height:1.8;}

.aside-card{
  position:relative;overflow:hidden;
  background:var(--grad);
  color:#fff;
  border-radius:var(--r-lg);
  padding:28px 26px;
  box-shadow:var(--shadow-2);
}
.aside-card::after{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(circle at 22% 18%,rgba(255,255,255,.5) 0 1px,transparent 1.5px),
    radial-gradient(circle at 74% 62%,rgba(242,166,59,.6) 0 1px,transparent 1.5px),
    radial-gradient(circle at 46% 88%,rgba(255,255,255,.4) 0 1px,transparent 1.5px);
  pointer-events:none;
}
.aside-card > *{position:relative;z-index:1;}
.aside-card h3{font-size:19px;font-weight:800;margin-bottom:6px;}
.aside-card .aside-sub{font-size:13px;color:rgba(255,255,255,.78);margin-bottom:20px;}
.aside-list{display:flex;flex-direction:column;gap:14px;}
.aside-list li{
  display:grid;grid-template-columns:20px minmax(0,1fr);gap:10px;
  font-size:14px;line-height:1.75;color:rgba(255,255,255,.92);
}
.aside-list svg{width:20px;height:20px;fill:none;stroke:var(--accent-500);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;margin-top:3px;}
.aside-card .btn{margin-top:22px;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;
  font-size:16px;font-weight:700;
  text-align:left;color:var(--ink);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand-700);}
.faq-icon{
  position:relative;flex:none;
  width:28px;height:28px;border-radius:50%;
  border:1px solid var(--line-strong);
  transition:border-color .18s ease,background .18s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;
  background:var(--brand-700);border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{width:11px;height:1.6px;}
.faq-icon::after{width:1.6px;height:11px;}
.faq-item.is-open .faq-icon{border-color:var(--brand-500);background:var(--brand-100);}
.faq-item.is-open .faq-icon::after{opacity:0;transform:translate(-50%,-50%) rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a-inner{
  padding:0 48px 22px 0;
  max-width:720px;
  font-size:15px;line-height:1.85;color:var(--ink-2);
}

/* ============ 分页 ============ */
.pager{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;
  gap:8px;margin-top:52px;
}
.pager a,.pager span{
  min-width:44px;height:44px;padding:0 16px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);
  border-radius:12px;
  background:var(--surface);
  color:var(--ink-2);
  font-size:14px;font-weight:600;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.pager a:hover{border-color:var(--brand-500);color:var(--brand-700);text-decoration:none;}
.pager .is-current{
  background:var(--brand-500);border-color:var(--brand-500);
  color:#fff;font-weight:800;
}
.pager .is-disabled{opacity:.45;pointer-events:none;}

/* ============ CTA ============ */
.cta-band{position:relative;overflow:hidden;background:var(--grad);color:#fff;padding:76px 0;}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(circle at 14% 30%,rgba(255,255,255,.5) 0 1px,transparent 1.5px),
    radial-gradient(circle at 52% 14%,rgba(242,166,59,.6) 0 1px,transparent 1.5px),
    radial-gradient(circle at 78% 74%,rgba(255,255,255,.42) 0 1px,transparent 1.5px),
    radial-gradient(circle at 34% 88%,rgba(255,255,255,.32) 0 1px,transparent 1.5px);
  pointer-events:none;
}
.cta-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{font-size:30px;font-weight:800;line-height:1.35;letter-spacing:-.01em;}
.cta-inner p{margin-top:12px;font-size:14px;color:rgba(255,255,255,.82);max-width:620px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;align-items:flex-start;}
.cta-note{font-size:12px;color:rgba(255,255,255,.7);}

/* ============ 页脚 ============ */
.site-footer{
  background:#16122B;
  border-top:2px solid var(--accent-500);
  color:#B8B4CC;
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:800;}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);color:var(--accent-500);}
.footer-desc{margin-top:16px;font-size:13px;line-height:1.85;color:#B8B4CC;max-width:320px;}
.footer-col h4{font-size:13px;font-weight:800;color:var(--accent-500);letter-spacing:.06em;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:13px;color:#B8B4CC;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:#8C87A8;
}

/* ============ 断点 ============ */
@media (max-width:1439px){
  .container{max-width:1200px;}
}
@media (max-width:1199px){
  .cat-hero h1{font-size:40px;}
  .split{grid-template-columns:minmax(0,1fr) 320px;}
}
@media (max-width:1199px) and (min-width:992px){
  :root{--sidebar:76px;}
  .sidebar{padding:22px 12px;}
  .brand{justify-content:center;padding:4px 0 18px;}
  .brand-text{display:none;}
  .nav-item{justify-content:center;padding:0;}
  .nav-item.is-active::before{top:9px;bottom:9px;}
  .nav-txt{
    position:absolute;left:64px;top:50%;transform:translateY(-50%);
    background:var(--brand-900);color:#fff;
    font-size:13px;padding:6px 12px;border-radius:8px;
    opacity:0;pointer-events:none;transition:opacity .18s ease;white-space:nowrap;
    z-index:10;
  }
  .nav-item:hover .nav-txt{opacity:1;}
  .sidebar-foot .btn{width:44px;min-height:44px;padding:0;font-size:0;gap:0;}
  .sidebar-foot .btn::after{content:"↓";font-size:16px;}
  .sidebar-note{display:none;}
}
@media (max-width:991px){
  :root{--sidebar:0px;}
  .sidebar{display:none;}
  .mobile-top{display:flex;}
  .site-main{padding-top:64px;}
  .site-footer{margin-left:0;}
  .section{padding:64px 0;}
  .cat-hero{min-height:240px;padding:44px 0;}
  .cat-hero h1{font-size:34px;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .split{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:52px 0;}
  .section-title{font-size:24px;}
  .cat-hero h1{font-size:28px;}
  .cat-hero .hero-lead{font-size:15px;}
  .grid-3{grid-template-columns:minmax(0,1fr);}
  .steps{grid-template-columns:minmax(0,1fr);}
  .btn{min-height:48px;}
  .hero-actions .btn{width:100%;}
  .cta-inner h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-a-inner{padding-right:0;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{justify-content:flex-start;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .cat-hero h1{font-size:25px;}
  .card-body{padding:18px 18px 20px;}
  .pager a,.pager span{min-width:40px;height:40px;padding:0 12px;font-size:13px;}
}

/* roulang page: category2 */
:root{
  --brand-900:#1B1550;
  --brand-700:#3A2C9E;
  --brand-500:#5B4BE0;
  --brand-100:#ECE9FB;
  --accent-500:#F2A63B;
  --accent-600:#D98916;
  --rose-500:#E85C8A;
  --bg:#F6F5FB;
  --surface:#FFFFFF;
  --surface-2:#FBFAFF;
  --ink:#191533;
  --ink-2:#4E4A63;
  --ink-3:#8A86A0;
  --line:#E7E4F3;
  --line-strong:#D6D2E8;
  --success:#1F9D6B;
  --warn:#D98916;
  --danger:#D3495C;
  --grad:linear-gradient(135deg,#3A2C9E 0%,#5B4BE0 55%,#8B6BE8 100%);
  --shadow-1:0 4px 16px rgba(27,21,80,.06);
  --shadow-2:0 14px 38px rgba(27,21,80,.10);
  --r-lg:24px;
  --r-md:20px;
  --r-sm:14px;
  --r-xs:12px;
  --rail-w:232px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--brand-500);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit;}
:focus-visible{outline:3px solid rgba(91,75,224,.4);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}

/* ---------- 左侧导航 ---------- */
.side-rail{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  width:var(--rail-w);
  background:var(--surface);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  padding:24px 16px 20px;
  z-index:60;
}
.rail-brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:6px 8px 20px;
  color:var(--ink);
  text-decoration:none;
  border-bottom:1px solid var(--line);
  margin-bottom:18px;
}
.rail-brand:hover{text-decoration:none;color:var(--ink);}
.brand-mark{
  width:38px;
  height:38px;
  flex:none;
  border-radius:12px;
  background:var(--grad);
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 6px 16px rgba(91,75,224,.28);
}
.brand-mark svg{width:20px;height:20px;fill:var(--accent-500);stroke:none;}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:15px;font-weight:800;letter-spacing:.01em;}
.brand-text em{
  font-style:normal;
  font-size:11px;
  font-weight:700;
  color:var(--brand-700);
  background:var(--brand-100);
  border-radius:6px;
  padding:1px 6px;
  margin-top:4px;
  align-self:flex-start;
  letter-spacing:.06em;
}
.side-nav{display:flex;flex-direction:column;gap:4px;flex:1;}
.nav-item{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  height:44px;
  padding:0 12px;
  border-radius:12px;
  color:var(--ink-2);
  font-size:14px;
  font-weight:600;
  transition:background .18s ease,color .18s ease;
}
.nav-item svg{
  width:18px;
  height:18px;
  flex:none;
  fill:none;
  stroke:currentColor;
  stroke-width:1.6;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.nav-item:hover{background:var(--surface-2);color:var(--brand-700);text-decoration:none;}
.nav-item.is-active{background:var(--brand-100);color:var(--brand-700);}
.nav-item.is-active::before{
  content:"";
  position:absolute;
  left:0;
  top:10px;
  bottom:10px;
  width:3px;
  border-radius:3px;
  background:var(--accent-500);
}
.rail-foot{border-top:1px solid var(--line);padding-top:16px;margin-top:12px;}
.rail-note{
  font-size:12px;
  color:var(--ink-3);
  line-height:1.6;
  margin-top:10px;
  text-align:center;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  line-height:1;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  border:1px solid transparent;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn:active{transform:translateY(1px);}
.btn-primary{
  background:var(--brand-500);
  color:#fff;
  box-shadow:0 8px 20px rgba(91,75,224,.28);
}
.btn-primary:hover{background:var(--brand-700);color:#fff;box-shadow:0 10px 26px rgba(91,75,224,.34);}
.btn-ghost{
  background:var(--surface);
  color:var(--ink);
  border-color:var(--line-strong);
}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand-500);color:var(--brand-700);}
.btn-block{width:100%;padding:0 16px;font-size:14px;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

/* ---------- 移动顶部栏 ---------- */
.topbar{
  display:none;
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:64px;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  align-items:center;
  justify-content:space-between;
  padding:0 18px;
  z-index:80;
}
.topbar-brand{display:flex;align-items:center;gap:9px;color:var(--ink);text-decoration:none;}
.topbar-brand:hover{text-decoration:none;color:var(--ink);}
.topbar-brand .brand-mark{width:32px;height:32px;border-radius:10px;}
.topbar-brand .brand-mark svg{width:17px;height:17px;}
.topbar-brand strong{font-size:14px;font-weight:800;}
.hamburger{
  width:44px;height:44px;
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  gap:5px;border-radius:12px;
  border:1px solid var(--line);
  background:var(--surface);
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease;}
.hamburger:hover{background:var(--surface-2);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(25,21,51,.4);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;
  background:rgba(255,255,255,.97);
  backdrop-filter:blur(8px);
  z-index:95;
  transform:translateX(100%);
  transition:transform .26s ease;
  padding:22px 18px;
  display:flex;flex-direction:column;gap:6px;
  box-shadow:-14px 0 40px rgba(27,21,80,.16);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-title{font-size:14px;font-weight:800;color:var(--ink);}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--ink-2);
}
.drawer .nav-item{height:48px;font-size:15px;}
.drawer .btn{margin-top:18px;}

/* ---------- 主体外壳 ---------- */
.shell{
  margin-left:var(--rail-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
main{flex:1;}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;
  overflow:hidden;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  padding:36px 0 44px;
}
.page-head::before{
  content:"";
  position:absolute;
  inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.13;
  pointer-events:none;
}
.page-head::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 12% 28%,rgba(91,75,224,.10) 0 1.5px,transparent 2px),
    radial-gradient(circle at 68% 18%,rgba(242,166,59,.16) 0 1.5px,transparent 2px),
    radial-gradient(circle at 86% 62%,rgba(91,75,224,.10) 0 1.5px,transparent 2px),
    radial-gradient(circle at 34% 78%,rgba(91,75,224,.08) 0 1.5px,transparent 2px);
  pointer-events:none;
}
.page-head .container{position:relative;z-index:2;}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-3);
  margin-bottom:22px;
}
.crumb a{color:var(--ink-3);}
.crumb a:hover{color:var(--brand-700);}
.crumb .sep{color:var(--line-strong);}
.crumb .current{color:var(--ink-2);font-weight:600;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:8px;
  background:var(--brand-100);
  color:var(--brand-700);
  font-size:12px;
  font-weight:700;
  letter-spacing:.02em;
}
.tag-sm{padding:4px 10px;font-size:12px;}
.tag-gold{background:rgba(242,166,59,.14);color:var(--accent-600);}
.page-head h1{
  font-size:42px;
  line-height:1.22;
  font-weight:800;
  letter-spacing:-.02em;
  margin:16px 0 0;
  max-width:20ch;
}
.lead{
  margin-top:16px;
  max-width:760px;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
}
.stat-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.stat{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  background:var(--surface);
  border:1px solid rgba(242,166,59,.5);
  border-radius:999px;
  padding:8px 16px;
  box-shadow:var(--shadow-1);
}
.stat em{font-style:normal;font-size:12px;color:var(--ink-3);}
.stat strong{font-size:14px;font-weight:700;color:var(--ink);font-family:"Inter",system-ui,sans-serif;}

/* ---------- 目录 + 条目 ---------- */
.listing{padding:64px 0 24px;}
.listing-grid{
  display:grid;
  grid-template-columns:236px minmax(0,1fr);
  gap:52px;
  align-items:start;
}
.toc{
  position:sticky;
  top:32px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:20px 16px;
  box-shadow:var(--shadow-1);
}
.toc-title{
  font-size:13px;
  font-weight:800;
  letter-spacing:.1em;
  color:var(--ink-3);
  text-transform:uppercase;
  padding:0 10px 12px;
  border-bottom:1px solid var(--line);
  margin-bottom:10px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-link{
  position:relative;
  display:block;
  padding:10px 12px;
  border-radius:10px;
  font-size:14px;
  font-weight:600;
  color:var(--ink-2);
  line-height:1.5;
  transition:background .18s ease,color .18s ease;
}
.toc-link:hover{background:var(--surface-2);color:var(--brand-700);text-decoration:none;}
.toc-link.is-current{background:var(--brand-100);color:var(--brand-700);}
.toc-link.is-current::before{
  content:"";
  position:absolute;
  left:0;top:8px;bottom:8px;width:3px;
  border-radius:3px;
  background:var(--accent-500);
}
.toc-tip{
  margin-top:16px;
  padding:12px;
  border-radius:var(--r-xs);
  background:var(--surface-2);
  font-size:12px;
  line-height:1.7;
  color:var(--ink-3);
  border:1px dashed var(--line-strong);
}

.entries{display:flex;flex-direction:column;}
.entry{
  display:grid;
  grid-template-columns:280px minmax(0,1fr);
  gap:30px;
  padding:34px 0;
  border-bottom:1px solid var(--line);
}
.entry:first-child{padding-top:0;}
.entry:last-child{border-bottom:0;}
.entry-media{
  border-radius:var(--r-sm);
  overflow:hidden;
  background:var(--grad);
  box-shadow:var(--shadow-1);
  aspect-ratio:4/3;
}
.entry-media img{
  width:100%;height:100%;
  object-fit:cover;
  object-position:center;
  transition:transform .4s ease;
}
.entry:hover .entry-media img{transform:scale(1.04);}
.entry-body{display:flex;flex-direction:column;gap:12px;}
.entry-body h2{
  font-size:22px;
  font-weight:800;
  line-height:1.35;
  letter-spacing:-.01em;
}
.entry-body p{
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
}
.spec-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:2px;}
.spec{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--surface-2);
  font-size:12px;
  color:var(--ink-3);
}
.spec strong{font-size:12.5px;font-weight:700;color:var(--ink);font-family:"Inter",system-ui,sans-serif;}
.entry-link{
  align-self:flex-start;
  margin-top:4px;
  font-size:14px;
  font-weight:700;
  color:var(--brand-500);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.entry-link::after{content:"→";transition:transform .18s ease;display:inline-block;}
.entry-link:hover::after{transform:translateX(4px);}

/* ---------- 核对清单 ---------- */
.checklist{padding:56px 0 24px;}
.checklist-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
  margin-top:26px;
}
.check-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:24px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.check-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.check-num{
  font-family:"Inter",system-ui,sans-serif;
  font-size:13px;
  font-weight:800;
  color:var(--accent-600);
  letter-spacing:.08em;
}
.check-card h3{font-size:16px;font-weight:800;margin:8px 0 8px;}
.check-card p{font-size:14px;line-height:1.8;color:var(--ink-2);}

/* ---------- 板块标题 ---------- */
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:30px;
  font-weight:800;
  letter-spacing:-.015em;
  line-height:1.3;
}
.section-head p{font-size:15px;color:var(--ink-2);margin-top:8px;max-width:60ch;}
.section-link{font-size:14px;font-weight:700;white-space:nowrap;}

/* ---------- FAQ ---------- */
.faq-section{padding:64px 0 24px;}
.faq-list{margin-top:22px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 0;
  text-align:left;
  font-size:16px;
  font-weight:700;
  color:var(--ink);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand-700);}
.faq-icon{
  flex:none;
  width:28px;height:28px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  position:relative;
  transition:background .18s ease,border-color .18s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink-2);
  border-radius:2px;
  transition:transform .2s ease,background .2s ease;
}
.faq-icon::before{width:11px;height:1.6px;}
.faq-icon::after{width:1.6px;height:11px;}
.faq-item.is-open .faq-icon{background:var(--brand-500);border-color:var(--brand-500);}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:#fff;}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .22s ease;
}
.faq-a-inner{
  padding:0 0 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
  max-width:720px;
}

/* ---------- CTA ---------- */
.cta-band{
  margin:72px 0 0;
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  background:var(--grad);
  padding:52px 48px;
  color:#fff;
  box-shadow:0 20px 46px rgba(58,44,158,.28);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 18% 30%,rgba(255,255,255,.5) 0 1.2px,transparent 2px),
    radial-gradient(circle at 62% 22%,rgba(255,255,255,.42) 0 1.2px,transparent 2px),
    radial-gradient(circle at 84% 68%,rgba(255,255,255,.38) 0 1.2px,transparent 2px),
    radial-gradient(circle at 36% 82%,rgba(255,255,255,.32) 0 1.2px,transparent 2px);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-band h2{font-size:28px;font-weight:800;line-height:1.35;letter-spacing:-.01em;}
.cta-band p{margin-top:10px;font-size:14px;color:rgba(255,255,255,.82);max-width:60ch;line-height:1.8;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.btn-accent{
  background:var(--accent-500);
  color:var(--brand-900);
  box-shadow:0 10px 24px rgba(0,0,0,.18);
}
.btn-accent:hover{background:#fff;color:var(--brand-700);}
.btn-onbrand{
  background:rgba(255,255,255,.14);
  color:#fff;
  border-color:rgba(255,255,255,.4);
}
.btn-onbrand:hover{background:rgba(255,255,255,.24);color:#fff;border-color:rgba(255,255,255,.7);}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:80px;
  background:#16122B;
  color:#B8B4CC;
  border-top:2px solid var(--accent-500);
  font-size:13px;
}
.footer-inner{padding:56px 0 0;}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;box-shadow:none;}
.footer-brand .brand-mark svg{width:18px;height:18px;}
.footer-brand strong{color:#fff;font-size:15px;font-weight:800;}
.footer-desc{font-size:13px;line-height:1.85;color:#B8B4CC;max-width:34ch;}
.footer-col h4{
  font-size:13px;
  font-weight:700;
  color:var(--accent-500);
  margin-bottom:14px;
  letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:#B8B4CC;font-size:13px;}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:18px 0 22px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:12px;
  color:#8F8AA8;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px) and (min-width:992px){
  .side-rail{width:76px;padding:20px 10px;align-items:center;}
  .rail-brand{padding:4px 0 16px;justify-content:center;width:100%;}
  .rail-brand .brand-text{display:none;}
  .nav-item{justify-content:center;padding:0;width:52px;height:46px;}
  .nav-item .nav-txt{display:none;}
  .rail-foot .btn{padding:0;width:52px;font-size:0;}
  .rail-foot .btn::after{content:"↓";font-size:18px;}
  .rail-note{display:none;}
  .shell{margin-left:76px;}
}

@media (max-width:991px){
  .side-rail{display:none;}
  .topbar{display:flex;}
  .shell{margin-left:0;padding-top:64px;}
  .container{padding:0 28px;}
  .page-head{padding:30px 0 36px;}
  .page-head h1{font-size:32px;max-width:none;}
  .listing{padding:44px 0 18px;}
  .listing-grid{grid-template-columns:1fr;gap:28px;}
  .toc{position:static;}
  .toc-list{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .toc-link{padding:8px 12px;font-size:13px;border:1px solid var(--line);border-radius:999px;}
  .toc-link.is-current::before{display:none;}
  .toc-tip{display:none;}
  .entry{grid-template-columns:220px minmax(0,1fr);gap:22px;padding:26px 0;}
  .checklist-grid{grid-template-columns:1fr;}
  .cta-band{padding:38px 28px;border-radius:var(--r-md);}
  .cta-band h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .faq-a-inner{max-width:none;}
}

@media (max-width:767px){
  .container{padding:0 20px;}
  .page-head h1{font-size:27px;line-height:1.3;}
  .lead{font-size:15px;}
  .stat{padding:6px 12px;}
  .entry{grid-template-columns:1fr;gap:16px;}
  .entry-media{aspect-ratio:16/9;}
  .entry-body h2{font-size:19px;}
  .section-head h2{font-size:23px;}
  .btn{min-height:48px;width:100%;}
  .cta-actions{width:100%;}
  .faq-q{font-size:15px;gap:14px;}
  .cta-band{margin-top:52px;padding:30px 20px;}
  .site-footer{margin-top:56px;}
  .footer-inner{padding-top:40px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

@media (max-width:480px){
  .container{padding:0 16px;}
  .page-head h1{font-size:24px;}
  .stat-row{gap:8px;}
  .stat strong{font-size:13px;}
  .check-card{padding:20px;}
}

/* roulang page: category3 */
:root{
  --brand-900:#1B1550;
  --brand-700:#3A2C9E;
  --brand-500:#5B4BE0;
  --brand-100:#ECE9FB;
  --accent-500:#F2A63B;
  --accent-600:#D98916;
  --rose-500:#E85C8A;
  --bg:#F6F5FB;
  --surface:#FFFFFF;
  --surface-2:#FBFAFF;
  --ink:#191533;
  --ink-2:#4E4A63;
  --ink-3:#8A86A0;
  --line:#E7E4F3;
  --line-strong:#D6D2E8;
  --success:#1F9D6B;
  --warn:#D98916;
  --danger:#D3495C;
  --grad:linear-gradient(135deg,#3A2C9E 0%,#5B4BE0 55%,#8B6BE8 100%);
  --r-xl:24px;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --shadow-1:0 4px 16px rgba(27,21,80,.06);
  --shadow-2:0 14px 38px rgba(27,21,80,.10);
  --side-w:232px;
  --ease:180ms ease;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-700);text-decoration:none;transition:color var(--ease),text-decoration-color var(--ease);}
a:hover{color:var(--brand-500);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
svg{display:block;}
:focus-visible{outline:3px solid rgba(91,75,224,.4);outline-offset:2px;border-radius:8px;}

/* ---------- 布局骨架 ---------- */
.site-side{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:var(--surface);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:24px 16px 20px;
  z-index:60;
}
.brand{
  display:flex;align-items:center;gap:12px;
  padding:6px 8px 22px;
  border-bottom:1px solid var(--line);
}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:14px;
  background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px rgba(91,75,224,.28);
}
.brand-mark svg{width:22px;height:22px;fill:none;stroke:#FFD79A;stroke-width:1.6;stroke-linejoin:round;stroke-linecap:round;}
.brand-text strong{display:block;font-size:15px;font-weight:800;letter-spacing:-.01em;line-height:1.3;}
.brand-text span{
  display:inline-block;margin-top:4px;
  font-size:11px;line-height:1.6;letter-spacing:.04em;
  color:var(--brand-700);background:var(--brand-100);
  border-radius:6px;padding:0 6px;
}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:20px;}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:12px;
  color:var(--ink-2);font-size:14px;font-weight:600;
  transition:background var(--ease),color var(--ease);
}
.nav-item svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex:0 0 19px;}
.nav-item:hover{background:var(--surface-2);color:var(--brand-700);text-decoration:none;}
.nav-item.is-active{background:var(--brand-100);color:var(--brand-700);}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--accent-500);
}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;padding-top:18px;}
.side-note{font-size:12px;color:var(--ink-3);line-height:1.6;}

.page-main{margin-left:var(--side-w);min-height:100vh;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:70;
  height:64px;background:var(--surface);
  border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;
  padding:0 16px;
}
.topbar .brand{padding:0;border:0;}
.topbar .brand-mark{width:34px;height:34px;flex-basis:34px;border-radius:12px;}
.topbar .brand-text strong{font-size:14px;}
.burger{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);display:flex;align-items:center;justify-content:center;gap:4px;flex-direction:column;
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);}
.drawer{
  position:fixed;inset:0;z-index:90;
  background:rgba(22,18,43,.36);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:rgba(255,255,255,.98);
  border-left:1px solid var(--line);
  padding:20px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(100%);transition:transform 220ms ease;
}
.drawer.is-open{opacity:1;visibility:visible;}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:10px;}
.drawer-head strong{font-size:15px;font-weight:800;}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--ink-2);font-size:18px;line-height:1;}
.drawer .nav-item{height:48px;}
.drawer-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);}

/* ---------- 按钮与徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease),filter var(--ease);
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:0 8px 20px rgba(91,75,224,.28);}
.btn-primary:hover{background:var(--brand-500);color:#fff;text-decoration:none;filter:brightness(1.04);box-shadow:0 12px 26px rgba(91,75,224,.32);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:var(--surface);color:var(--brand-700);border-color:var(--line-strong);}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-500);text-decoration:none;background:var(--surface-2);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:13px;border-radius:12px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.45;cursor:not-allowed;box-shadow:none;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1.6;font-weight:700;
  padding:3px 10px;border-radius:8px;
  background:var(--brand-100);color:var(--brand-700);
}
.badge-gold{background:rgba(242,166,59,.14);color:var(--accent-600);border:1px solid rgba(242,166,59,.5);}
.badge-rose{background:rgba(232,92,138,.12);color:#C2416C;}
.badge-line{background:var(--surface);color:var(--ink-2);border:1px solid var(--line-strong);}

/* ---------- 页面头部 ---------- */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-3);padding:28px 0 0;
}
.crumb a{color:var(--ink-3);}
.crumb a:hover{color:var(--brand-700);}
.crumb .sep{color:var(--line-strong);}
.crumb .now{color:var(--ink-2);}

.cat-hero{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);
  margin-top:22px;
  padding:52px 48px 46px;
  background-image:linear-gradient(115deg,rgba(27,21,80,.94) 0%,rgba(58,44,158,.86) 52%,rgba(91,75,224,.68) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  color:#fff;
  box-shadow:var(--shadow-2);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:26px 26px;opacity:.08;
}
.cat-hero-inner{position:relative;z-index:1;max-width:760px;}
.cat-hero h1{
  font-size:42px;line-height:1.22;font-weight:800;letter-spacing:-.02em;
  margin:16px 0 0;
}
.cat-hero p{color:rgba(255,255,255,.86);font-size:15.5px;line-height:1.9;margin-top:16px;max-width:680px;}
.cat-hero .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.cat-hero .badge{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.28);}

/* ---------- 筛选 chips ---------- */
.chips{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:26px;
}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  min-height:38px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line-strong);background:var(--surface);
  color:var(--ink-2);font-size:13.5px;font-weight:600;
  transition:all var(--ease);
}
.chip:hover{border-color:var(--brand-500);color:var(--brand-700);}
.chip.is-on{background:var(--brand-700);border-color:var(--brand-700);color:#fff;box-shadow:0 8px 18px rgba(91,75,224,.22);}
.chip.is-on:hover{color:#fff;}

/* ---------- 板块 ---------- */
.section{padding:64px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:26px;}
.section-head h2{font-size:30px;font-weight:800;letter-spacing:-.02em;line-height:1.3;}
.section-head .sub{color:var(--ink-3);font-size:14px;margin-top:8px;max-width:640px;}
.section-head .head-link{font-size:14px;font-weight:700;white-space:nowrap;}

/* ---------- 数据条 ---------- */
.stat-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:26px;
}
.stat{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 20px;box-shadow:var(--shadow-1);
}
.stat .k{font-size:12px;color:var(--ink-3);letter-spacing:.02em;}
.stat .v{font-size:24px;font-weight:800;letter-spacing:-.01em;margin-top:6px;}
.stat .v small{font-size:13px;font-weight:600;color:var(--ink-3);margin-left:4px;}

/* ---------- Bento ---------- */
.bento{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.bento-card{
  position:relative;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:32px;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.bento-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.bento-card.is-wide{grid-column:span 2;display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center;padding:36px;}
.bento-card .num{
  font-size:58px;line-height:1;font-weight:800;letter-spacing:-.04em;
  color:var(--brand-100);
  font-family:"Inter",var(--font);
}
.bento-card h3{font-size:21px;font-weight:800;letter-spacing:-.01em;margin-top:10px;line-height:1.4;}
.bento-card p{color:var(--ink-2);font-size:14.5px;line-height:1.85;margin-top:10px;}
.bento-list{margin-top:16px;display:grid;gap:10px;}
.bento-list li{position:relative;padding-left:22px;font-size:14px;color:var(--ink-2);line-height:1.8;}
.bento-list li::before{
  content:"";position:absolute;left:2px;top:9px;width:7px;height:7px;border-radius:50%;
  background:var(--accent-500);
}
.bento-figure{
  border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:4/3;background:var(--brand-100);
  border:1px solid var(--line);
}
.bento-figure img{width:100%;height:100%;object-fit:cover;}
.bento-card .foot-note{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;
  font-size:13px;font-weight:700;color:var(--brand-700);
}
.bento-card .foot-note svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.bento-card.is-wide .num{font-size:68px;}

/* ---------- 步骤流程 ---------- */
.flow{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.flow-step{padding:28px 24px;border-right:1px solid var(--line);}
.flow-step:last-child{border-right:0;}
.flow-step .idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:10px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:13px;font-weight:800;font-family:"Inter",var(--font);
}
.flow-step h3{font-size:16px;font-weight:800;margin-top:14px;}
.flow-step p{font-size:13.5px;color:var(--ink-2);line-height:1.8;margin-top:8px;}

/* ---------- 风险对照 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-box{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;
}
.compare-box.danger{border-top:3px solid var(--rose-500);}
.compare-box.safe{border-top:3px solid var(--success);}
.compare-box h3{font-size:18px;font-weight:800;display:flex;align-items:center;gap:10px;}
.compare-box h3 .dot{width:9px;height:9px;border-radius:50%;}
.compare-box.danger h3 .dot{background:var(--rose-500);}
.compare-box.safe h3 .dot{background:var(--success);}
.compare-box ul{margin-top:16px;display:grid;gap:12px;}
.compare-box li{
  display:flex;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.8;
  padding-bottom:12px;border-bottom:1px dashed var(--line);
}
.compare-box li:last-child{border-bottom:0;padding-bottom:0;}
.compare-box li svg{width:17px;height:17px;flex:0 0 17px;margin-top:4px;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.compare-box.danger li svg{stroke:var(--danger);}
.compare-box.safe li svg{stroke:var(--success);}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--surface-2);border:1px solid var(--line);
  border-left:4px solid var(--accent-500);
  border-radius:var(--r-md);padding:18px 20px;margin-top:24px;
}
.notice svg{width:20px;height:20px;flex:0 0 20px;margin-top:3px;fill:none;stroke:var(--accent-600);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.notice p{font-size:14px;color:var(--ink-2);line-height:1.85;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:transparent;border:0;padding:20px 0;text-align:left;
  font-size:16px;font-weight:700;color:var(--ink);line-height:1.6;
  transition:color var(--ease);
}
.faq-q:hover{color:var(--brand-700);}
.faq-sign{
  position:relative;flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--line-strong);background:var(--surface);
  transition:border-color var(--ease),background var(--ease);
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-700);border-radius:2px;
  transform:translate(-50%,-50%);transition:opacity var(--ease),transform var(--ease);
}
.faq-sign::before{width:12px;height:1.8px;}
.faq-sign::after{width:1.8px;height:12px;}
.faq-item.is-open .faq-sign{border-color:var(--brand-500);background:var(--brand-100);}
.faq-item.is-open .faq-sign::after{opacity:0;transform:translate(-50%,-50%) rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 200ms ease;}
.faq-a-inner{padding:0 0 22px;max-width:720px;font-size:15px;color:var(--ink-2);line-height:1.85;}
.faq-a-inner ol{padding-left:20px;list-style:decimal;margin-top:10px;display:grid;gap:6px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  margin-top:72px;border-radius:var(--r-xl);
  background:var(--grad);color:#fff;
  padding:52px 48px;
  box-shadow:var(--shadow-2);
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:24px 24px;opacity:.09;pointer-events:none;
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:30px;font-weight:800;letter-spacing:-.02em;line-height:1.35;max-width:640px;}
.cta-inner p{font-size:14px;color:rgba(255,255,255,.82);margin-top:12px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-actions .btn-primary{background:#fff;color:var(--brand-900);box-shadow:0 10px 24px rgba(15,10,45,.24);}
.cta-actions .btn-primary:hover{background:#F4F1FF;color:var(--brand-900);}
.cta-actions .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.7);}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;background:#16122B;color:#B8B4CC;
  border-top:2px solid var(--accent-500);
  padding:56px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;}
.footer-brand .brand-mark{width:36px;height:36px;flex-basis:36px;border-radius:12px;box-shadow:none;}
.footer-brand strong{color:#fff;font-size:15px;font-weight:800;}
.footer-desc{font-size:13px;line-height:1.9;color:#B8B4CC;margin-top:14px;max-width:320px;}
.footer-col h4{font-size:13px;color:var(--accent-500);letter-spacing:.06em;font-weight:700;margin-bottom:16px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:13px;color:#B8B4CC;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:#8C88A6;
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .container{padding:0 32px;}
  .cat-hero{padding:44px 36px 40px;}
  .cat-hero h1{font-size:38px;}
  .bento-card.is-wide{grid-template-columns:1fr;gap:24px;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .flow-step:nth-child(2){border-right:0;}
  .flow-step:nth-child(1),.flow-step:nth-child(2){border-bottom:1px solid var(--line);}
}
@media (max-width:991px){
  .site-side{display:none;}
  .topbar{display:flex;}
  .page-main{margin-left:0;}
  .container{padding:0 24px;}
  .section{padding:52px 0 0;}
  .section-head h2{font-size:26px;}
  .stat-row{grid-template-columns:repeat(2,1fr);}
  .cat-hero h1{font-size:34px;}
  .cta-band{padding:40px 32px;}
  .cta-inner h2{font-size:25px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .bento{grid-template-columns:1fr;}
  .bento-card.is-wide{grid-column:span 1;}
  .compare{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .flow-step{border-right:0;border-bottom:1px solid var(--line);}
  .flow-step:last-child{border-bottom:0;}
  .cat-hero{padding:34px 22px 30px;border-radius:var(--r-lg);}
  .cat-hero h1{font-size:28px;}
  .cat-hero p{font-size:14.5px;}
  .bento-card{padding:24px;border-radius:var(--r-lg);}
  .bento-card.is-wide{padding:26px;}
  .bento-card .num{font-size:46px;}
  .bento-card.is-wide .num{font-size:52px;}
  .bento-card h3{font-size:19px;}
  .section-head{align-items:flex-start;}
  .section-head h2{font-size:23px;}
  .faq-q{font-size:15px;padding:18px 0;}
  .cta-band{padding:32px 22px;border-radius:var(--r-lg);}
  .cta-inner h2{font-size:22px;}
  .btn{min-height:48px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .cat-hero h1{font-size:25px;}
  .stat-row{grid-template-columns:1fr;}
  .chips{gap:8px;}
  .chip{padding:0 13px;font-size:13px;}
  .crumb{font-size:12px;padding-top:20px;}
}