/* roulang page: index */
:root{
  --brand:#6C4CE0;
  --brand-deep:#5A3FD0;
  --brand-soft:#EFEBFA;
  --brand-lite:#F7F5FB;
  --orange:#FF8A4C;
  --orange-light:#FFB27A;
  --orange-soft:#FFF1E8;
  --teal:#2FAF9B;
  --teal-soft:#E6F6F3;
  --danger:#D64545;
  --danger-soft:#FCEDED;
  --ink:#1C1A2E;
  --sub:#5A5770;
  --muted:#8B87A3;
  --deep:#221E3F;
  --bg:#F7F5FB;
  --card:#FFFFFF;
  --line:#E6E2F2;
  --line-hover:#CFC6F2;
  --grad-brand:linear-gradient(135deg,#6C4CE0 0%,#A07BFF 100%);
  --grad-accent:linear-gradient(135deg,#FF8A4C 0%,#FFB27A 100%);
  --r-btn:14px;
  --r-card:22px;
  --r-shot:28px;
  --sh-sm:0 1px 2px rgba(34,30,63,.06);
  --sh-md:0 8px 24px -8px rgba(34,30,63,.16);
  --sh-lg:0 24px 60px -20px rgba(34,30,63,.28);
  --sh-glow:0 16px 40px -12px rgba(108,76,224,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --side:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-deep);text-decoration:none;transition:color 180ms var(--ease)}
a:hover{color:var(--brand)}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;line-height:1.32;text-wrap:balance}
p{margin:0}
dl,dd,dt{margin:0}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:6px}
::selection{background:rgba(108,76,224,.18)}

/* ---------- 布局骨架 ---------- */
.shell{display:flex;min-height:100vh;align-items:flex-start}
.sidebar{
  position:sticky;top:0;
  flex:0 0 var(--side);width:var(--side);height:100vh;
  overflow-y:auto;overflow-x:hidden;
  background:var(--deep);
  background-image:
    radial-gradient(1px 1px at 18% 12%,rgba(255,255,255,.32) 50%,transparent 51%),
    radial-gradient(1px 1px at 74% 26%,rgba(255,255,255,.26) 50%,transparent 51%),
    radial-gradient(1px 1px at 38% 58%,rgba(255,255,255,.22) 50%,transparent 51%),
    radial-gradient(1px 1px at 86% 76%,rgba(255,255,255,.28) 50%,transparent 51%),
    radial-gradient(1px 1px at 12% 88%,rgba(255,255,255,.2) 50%,transparent 51%);
  display:flex;flex-direction:column;
  z-index:40;
}
.side-brand{height:88px;display:flex;align-items:center;padding:0 20px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand{display:flex;align-items:center;gap:10px;color:#fff}
.brand:hover{color:#fff}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:11px;
  background:var(--grad-brand);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px -8px rgba(160,123,255,.9);
}
.brand-mark svg{width:18px;height:18px;fill:#fff}
.brand-text{font-size:14.5px;font-weight:700;line-height:1.3;letter-spacing:.2px}
.side-nav{padding:18px 14px;display:flex;flex-direction:column;gap:4px}
.side-nav .nav-label{
  font-size:11.5px;color:rgba(255,255,255,.42);letter-spacing:1.2px;
  padding:8px 12px 6px;text-transform:uppercase;
}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:12px;
  font-size:14px;color:rgba(255,255,255,.74);
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.nav-item svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.6;flex:0 0 16px;opacity:.8}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:rgba(255,255,255,.08);color:#fff;font-weight:600}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:999px;background:var(--orange);
}
.side-foot{margin-top:auto;padding:18px 16px 22px;border-top:1px solid rgba(255,255,255,.08)}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:46px;border-radius:13px;background:var(--grad-brand);
  color:#fff;font-size:14px;font-weight:600;
  box-shadow:0 14px 30px -14px rgba(108,76,224,.95);
  transition:transform 180ms var(--ease),filter 180ms var(--ease);
}
.side-cta:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.04)}
.side-help{font-size:12px;color:rgba(255,255,255,.5);margin-top:14px;line-height:1.7}
.side-ver{font-size:12px;color:rgba(255,255,255,.34);margin-top:6px;font-variant-numeric:tabular-nums}

.content{flex:1 1 auto;min-width:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:92px 0}
.section.tight{padding:64px 0}
.section.soft{background:var(--brand-soft)}

/* ---------- 移动端导航 ---------- */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:50;
  height:58px;align-items:center;justify-content:space-between;
  padding:0 18px;background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
  box-shadow:var(--sh-sm);
}
.mobile-bar .brand{color:var(--ink);gap:8px}
.mobile-bar .brand-mark{width:30px;height:30px;flex:0 0 30px;border-radius:9px}
.mobile-bar .brand-mark svg{width:16px;height:16px}
.mobile-bar .brand-text{font-size:14px}
.burger{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:#fff;transition:border-color 180ms var(--ease);
}
.burger:hover{border-color:var(--line-hover)}
.burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.backdrop{
  position:fixed;inset:0;background:rgba(34,30,63,.5);z-index:55;
  opacity:0;pointer-events:none;transition:opacity 220ms var(--ease);
}
.backdrop.show{opacity:1;pointer-events:auto}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(168deg,#F2EEFC 0%,#F7F5FB 58%,#FFF6F0 100%);
  padding:92px 0 84px;
}
.hero::before{
  content:"";position:absolute;width:640px;height:640px;left:-180px;top:-240px;
  background:radial-gradient(circle,rgba(108,76,224,.30) 0%,rgba(108,76,224,0) 68%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;width:520px;height:520px;right:-160px;bottom:-220px;
  background:radial-gradient(circle,rgba(255,138,76,.28) 0%,rgba(255,138,76,0) 70%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:12.5px;color:var(--brand-deep);font-weight:600;
  box-shadow:var(--sh-sm);
}
.eyebrow svg{width:13px;height:13px;fill:var(--orange)}
.hero h1{
  font-size:clamp(34px,4vw,52px);line-height:1.2;margin-top:22px;
  letter-spacing:-.5px;
}
.hero h1 em{font-style:normal;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{margin-top:20px;font-size:17px;line-height:1.85;color:var(--sub);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease);
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-glow)}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.04);color:#fff}
.btn-ghost{background:#fff;color:var(--brand-deep);border-color:var(--line);box-shadow:var(--sh-sm)}
.btn-ghost:hover{border-color:var(--line-hover);transform:translateY(-1px);color:var(--brand-deep)}
.btn-sm{height:40px;padding:0 16px;font-size:13.5px;border-radius:11px}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-deep);height:auto;padding:0}
.btn-text svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.8;transition:transform 180ms var(--ease)}
.btn-text:hover svg{transform:translateX(3px)}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}

.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.metric{
  display:flex;align-items:baseline;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:9px 18px;box-shadow:var(--sh-sm);
}
.metric b{
  font-size:22px;font-weight:700;font-variant-numeric:tabular-nums;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
  line-height:1;
}
.metric span{font-size:12px;color:var(--sub)}

.hero-visual{position:relative;display:flex;justify-content:center}
.device-shell{
  position:relative;width:100%;max-width:470px;
  border-radius:var(--r-shot);padding:16px;
  background-image:linear-gradient(rgba(34,30,63,.78),rgba(34,30,63,.6)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  box-shadow:var(--sh-lg),0 0 0 1px rgba(255,255,255,.14) inset;
  transform:rotate(-3deg);
  transition:transform 320ms var(--ease);
}
.device-shell:hover{transform:rotate(-1.2deg) translateY(-3px)}
.device-shell img{
  width:100%;border-radius:20px;
  box-shadow:0 20px 50px -18px rgba(0,0,0,.55);
}
.device-tag{
  position:absolute;left:-14px;bottom:26px;
  display:flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:8px 15px;font-size:12.5px;color:var(--ink);font-weight:600;
  box-shadow:var(--sh-md);
}
.dot-live{width:7px;height:7px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 4px rgba(47,175,155,.16)}

/* ---------- 信任条 ---------- */
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.trust-item{padding:30px 26px;border-left:1px solid var(--line)}
.trust-item:first-child{border-left:0;padding-left:0}
.trust-item b{
  display:block;font-size:28px;font-weight:700;line-height:1.2;
  font-variant-numeric:tabular-nums;color:var(--brand-deep);
}
.trust-item span{display:block;margin-top:6px;font-size:13px;color:var(--sub)}

/* ---------- 通用板块头 ---------- */
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{font-size:clamp(26px,2.6vw,32px);line-height:1.3}
.section-head p{margin-top:14px;color:var(--sub);font-size:15.5px;line-height:1.85}
.section-head.row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.kicker{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;font-weight:700;color:var(--brand);letter-spacing:.6px;margin-bottom:12px;
}
.kicker::before{content:"";width:16px;height:2px;border-radius:2px;background:var(--orange)}

/* ---------- Bento ---------- */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-md);padding:26px;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:var(--line-hover)}
.bento .big{grid-column:span 2;grid-row:span 2;padding:0;overflow:hidden;display:flex;flex-direction:column}
.bento .mid{grid-column:span 1}
.bento .wide{grid-column:span 2}
.bento .big figure{margin:0;position:relative;overflow:hidden;flex:0 0 auto}
.bento .big figure img{width:100%;height:238px;object-fit:cover;transition:transform 420ms var(--ease)}
.bento .big:hover figure img{transform:scale(1.03)}
.bento .big .big-body{padding:26px 28px 28px}
.icon-box{
  width:40px;height:40px;border-radius:12px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.icon-box svg{width:20px;height:20px;stroke:var(--brand);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:20px;line-height:1.35}
.card p{margin-top:10px;font-size:14.5px;color:var(--sub);line-height:1.8}
.card .mini-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:12px;font-weight:600;
}
.tag.orange{background:var(--orange-soft);color:#C25E22}
.tag.teal{background:var(--teal-soft);color:#1E8574}

/* ---------- 截图轮播 ---------- */
.rail-wrap{position:relative}
.rail{
  display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 26px;scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none}
.shot{
  flex:0 0 380px;scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-md);overflow:hidden;
}
.shot-bar{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 16px;
  background:#FBFAFE;border-bottom:1px solid var(--line);
}
.shot-bar i{width:8px;height:8px;border-radius:50%;background:var(--line-hover);display:block}
.shot-bar i:first-child{background:#FFB7A0}
.shot-bar span{margin-left:6px;font-size:12px;color:var(--muted)}
.shot img{width:100%;height:210px;object-fit:cover}
.shot figcaption{padding:16px 18px 20px;font-size:13.5px;color:var(--sub);line-height:1.7}
.rail-ctrl{display:flex;align-items:center;gap:12px;margin-top:8px}
.arrow{
  width:40px;height:40px;border-radius:50%;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-sm);transition:border-color 180ms var(--ease),transform 180ms var(--ease);
}
.arrow:hover{border-color:var(--line-hover);transform:translateY(-1px)}
.arrow svg{width:16px;height:16px;stroke:var(--brand-deep);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.dots{display:flex;gap:7px;margin-left:6px}
.dots i{width:7px;height:7px;border-radius:50%;background:var(--line-hover);transition:width 180ms var(--ease),background 180ms var(--ease)}
.dots i.on{width:20px;border-radius:999px;background:var(--brand)}

/* ---------- 系统要求 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.spec-card{display:flex;flex-direction:column}
.spec-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.spec-head h3{font-size:18px}
.spec-card dl{margin-top:6px}
.spec-row{display:grid;grid-template-columns:88px 1fr;gap:12px;padding:12px 0;border-top:1px solid var(--line);font-size:13.5px}
.spec-row:first-of-type{border-top:0}
.spec-row dt{color:var(--muted)}
.spec-row dd{color:var(--ink)}
.spec-card .btn{margin-top:20px;align-self:flex-start}

/* ---------- 评价墙 ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review{position:relative;display:flex;flex-direction:column}
.review::before{
  content:"“";position:absolute;top:6px;right:20px;
  font-size:56px;line-height:1;color:var(--brand-soft);font-family:Georgia,serif;
}
.review.feature{border:1px solid transparent;background:
  linear-gradient(#fff,#fff) padding-box,
  var(--grad-accent) border-box;}
.stars{display:flex;gap:3px;margin-bottom:14px}
.stars svg{width:14px;height:14px;fill:var(--orange)}
.review p{font-size:14.5px;color:var(--sub);line-height:1.82;position:relative;z-index:1}
.review-user{display:flex;align-items:center;gap:10px;margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}
.avatar{
  width:34px;height:34px;border-radius:50%;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;color:var(--brand-deep);
}
.review-user b{display:block;font-size:13.5px;font-weight:600}
.review-user small{display:block;font-size:12px;color:var(--muted)}

/* ---------- 下载 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:28px;
  background:linear-gradient(135deg,#2A2450 0%,#4A34A8 52%,#6C4CE0 100%);
  color:#fff;padding:52px 48px;
  display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:center;
  box-shadow:var(--sh-lg);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(1px 1px at 12% 22%,rgba(255,255,255,.35) 50%,transparent 51%),
    radial-gradient(1px 1px at 68% 18%,rgba(255,255,255,.28) 50%,transparent 51%),
    radial-gradient(1px 1px at 82% 72%,rgba(255,255,255,.3) 50%,transparent 51%),
    radial-gradient(1px 1px at 34% 84%,rgba(255,255,255,.22) 50%,transparent 51%);
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{font-size:clamp(24px,2.4vw,30px);color:#fff}
.cta-band p{margin-top:14px;color:rgba(255,255,255,.76);font-size:15px;max-width:520px;line-height:1.85}
.cta-right{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.qr{
  width:104px;height:104px;border-radius:16px;background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.24);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:11.5px;color:rgba(255,255,255,.72);line-height:1.5;padding:8px;
}
.cta-note{margin-top:18px;font-size:12px;color:rgba(255,255,255,.5);grid-column:1/-1}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-md);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:var(--line-hover)}
.news-thumb{overflow:hidden;background:var(--brand-soft)}
.news-thumb img{width:100%;height:172px;object-fit:cover;transition:transform 420ms var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-body h3{
  font-size:17px;line-height:1.5;margin-top:12px;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  margin-top:10px;font-size:13.5px;color:var(--sub);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{margin-top:16px;font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.empty-state{
  border:1px dashed var(--line-hover);border-radius:var(--r-card);background:#fff;
  padding:52px 24px;text-align:center;color:var(--sub);font-size:14.5px;
}
.empty-state svg{width:40px;height:40px;stroke:var(--brand);fill:none;stroke-width:1.3;margin:0 auto 14px}

/* ---------- FAQ ---------- */
.faq{display:grid;grid-template-columns:.85fr 1.15fr;gap:52px;align-items:start}
.faq-list{display:flex;flex-direction:column;gap:12px}
details.qa{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--sh-sm);overflow:hidden;transition:border-color 180ms var(--ease);
}
details.qa[open]{border-color:var(--line-hover);box-shadow:var(--sh-md)}
details.qa summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:14px 20px;font-size:16px;font-weight:600;
}
details.qa summary::-webkit-details-marker{display:none}
.plus{position:relative;width:20px;height:20px;flex:0 0 20px;transition:transform 200ms var(--ease)}
.plus::before,.plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);
  border-radius:2px;transform:translate(-50%,-50%);
}
.plus::before{width:12px;height:2px}
.plus::after{width:2px;height:12px}
details.qa[open] .plus{transform:rotate(45deg)}
.qa-body{padding:0 20px 20px;font-size:15px;color:var(--sub);line-height:1.9}
.qa-body p + p{margin-top:10px}

/* ---------- 页脚 ---------- */
.footer{
  position:relative;overflow:hidden;
  background:var(--deep);color:rgba(255,255,255,.72);
  background-image:
    radial-gradient(1px 1px at 10% 18%,rgba(255,255,255,.26) 50%,transparent 51%),
    radial-gradient(1px 1px at 62% 12%,rgba(255,255,255,.2) 50%,transparent 51%),
    radial-gradient(1px 1px at 84% 62%,rgba(255,255,255,.24) 50%,transparent 51%),
    radial-gradient(1px 1px at 28% 78%,rgba(255,255,255,.18) 50%,transparent 51%);
  padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px}
.footer h4{font-size:14px;color:#fff;margin-bottom:18px;font-weight:600}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.56);margin-top:16px;max-width:320px}
.footer .brand{margin-bottom:4px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:13.5px;color:rgba(255,255,255,.68)}
.footer-links a:hover{color:#fff}
.footer-contact{font-size:13.5px;line-height:2;color:rgba(255,255,255,.6)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.42);
}
.footer-bottom a{color:rgba(255,255,255,.52)}
.footer-bottom a:hover{color:#fff}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-md);
  display:flex;align-items:center;justify-content:center;z-index:45;
  opacity:0;pointer-events:none;transition:opacity 200ms var(--ease),transform 200ms var(--ease),border-color 180ms var(--ease);
}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-2px);border-color:var(--line-hover)}
.to-top svg{width:16px;height:16px;stroke:var(--brand-deep);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 断点 ---------- */
@media (min-width:1440px){
  .container{max-width:1240px}
}
@media (max-width:1199px){
  :root{--side:208px}
  .hero-grid{gap:40px}
  .shot{flex:0 0 340px}
  .cta-band{padding:44px 36px}
}
@media (max-width:1023px){
  .sidebar{
    position:fixed;top:0;right:0;left:auto;height:100vh;width:280px;flex:none;
    transform:translateX(100%);transition:transform 260ms var(--ease);
  }
  .sidebar.open{transform:translateX(0)}
  .mobile-bar{display:flex}
  .hero{padding:56px 0 60px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .device-shell{transform:none;max-width:520px}
  .device-shell:hover{transform:translateY(-3px)}
  .section{padding:72px 0}
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento .big{grid-column:span 2;grid-row:auto}
  .bento .wide{grid-column:span 2}
  .spec-grid{grid-template-columns:1fr;gap:18px}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .faq{grid-template-columns:1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;padding:40px 30px}
  .cta-right{flex-direction:row;align-items:center;flex-wrap:wrap}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .trust-item{padding:24px 20px;border-left:0;border-top:1px solid var(--line)}
  .trust-item:first-child,.trust-item:nth-child(2){border-top:0}
  .trust-item:nth-child(odd){padding-left:0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .hero h1{font-size:30px;line-height:1.28}
  .hero-lead{font-size:15.5px}
  .btn{height:48px;padding:0 20px;font-size:14.5px}
  .bento{grid-template-columns:1fr}
  .bento .big,.bento .wide,.bento .mid{grid-column:span 1}
  .bento .big figure img{height:200px}
  .review-grid,.news-grid{grid-template-columns:1fr}
  .shot{flex:0 0 86vw}
  .section-head.row{flex-direction:column;align-items:flex-start;gap:14px}
  .cta-band{padding:32px 22px;border-radius:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .trust-item b{font-size:24px}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:520px){
  .hero-badges{gap:8px}
  .metric{padding:8px 14px}
  .metric b{font-size:19px}
  .hero-actions .btn{width:100%}
  .device-tag{left:8px;bottom:14px;font-size:11.5px;padding:7px 12px}
  .qa-body,details.qa summary{font-size:14.5px}
  details.qa summary{min-height:56px;padding:12px 16px}
  .card{padding:22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-property:opacity,color,background-color,border-color !important}
  .card:hover,.news-card:hover,.btn:hover,.device-shell:hover{transform:none}
}

/* roulang page: article */
:root{
  --violet:#6C4CE0;
  --violet-deep:#5A3FD0;
  --violet-soft:#A07BFF;
  --orange:#FF8A4C;
  --orange-light:#FFB27A;
  --teal:#2FAF9B;
  --danger:#D64545;
  --ink:#221E3F;
  --bg:#F7F5FB;
  --card:#FFFFFF;
  --lav:#EFEBFA;
  --lav-deep:#E4DDFA;
  --line:#E6E2F2;
  --line-strong:#CFC6F2;
  --text:#1C1A2E;
  --text-2:#5A5770;
  --text-3:#8B87A3;
  --grad:linear-gradient(135deg,#6C4CE0,#A07BFF);
  --grad-o:linear-gradient(135deg,#FF8A4C,#FFB27A);
  --r-btn:14px;
  --r-card:22px;
  --r-lg:28px;
  --shadow-sm:0 1px 2px rgba(34,30,63,.06);
  --shadow-md:0 8px 24px -8px rgba(34,30,63,.16);
  --shadow-lg:0 24px 60px -20px rgba(34,30,63,.28);
  --shadow-btn:0 16px 40px -12px rgba(108,76,224,.45);
  --ease:180ms cubic-bezier(.2,.7,.3,1);
  --side-w:240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--violet-deep);text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:6px}
::selection{background:rgba(108,76,224,.18)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 骨架 ============ */
.shell{display:grid;grid-template-columns:var(--side-w) minmax(0,1fr);min-height:100vh}
.main-col{min-width:0;display:flex;flex-direction:column}

/* ============ 左侧竖栏 ============ */
.sidebar{
  position:sticky;top:0;align-self:start;height:100vh;
  display:flex;flex-direction:column;
  background:var(--ink);
  padding:0 16px 20px;
  overflow-y:auto;
  z-index:50;
  background-image:radial-gradient(rgba(255,255,255,.30) 1px, transparent 1px);
  background-size:24px 24px;
  background-position:0 0;
}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:6px}
.brand{display:flex;align-items:center;gap:10px;height:88px;flex:0 0 auto;color:#fff}
.brand-mark{
  width:36px;height:36px;flex:0 0 auto;border-radius:12px;
  background:var(--grad);display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 22px -10px rgba(160,123,255,.9);
}
.brand-mark svg{width:20px;height:20px;fill:#fff}
.brand-text{font-size:15px;font-weight:700;letter-spacing:.2px;line-height:1.3}
.nav{display:flex;flex-direction:column;gap:4px;margin-top:8px}
.nav-label{font-size:11px;letter-spacing:1.6px;color:rgba(255,255,255,.38);padding:8px 12px 6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:12px;
  font-size:14px;color:rgba(255,255,255,.74);
  transition:background var(--ease),color var(--ease);
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:rgba(255,255,255,.08);color:#fff;font-weight:600}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--orange);
}
.nav-item .dot{width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.35);flex:0 0 auto}
.nav-item.active .dot{background:var(--orange);box-shadow:0 0 0 3px rgba(255,138,76,.2)}
.side-bottom{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px}
.side-cta{width:100%;justify-content:center}
.side-link{font-size:13px;color:rgba(255,255,255,.6);padding:2px 4px;transition:color var(--ease)}
.side-link:hover{color:#fff}
.side-ver{font-size:12px;line-height:1.6;color:rgba(255,255,255,.34);padding:0 4px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease),filter var(--ease);
}
.btn-grad{background:var(--grad);color:#fff;box-shadow:var(--shadow-btn)}
.btn-grad:hover{transform:translateY(-1px);filter:brightness(1.04);color:#fff}
.btn-ghost{background:#fff;color:var(--violet-deep);border:1px solid var(--line)}
.btn-ghost:hover{transform:translateY(-1px);border-color:var(--line-strong);box-shadow:var(--shadow-md);color:var(--violet-deep)}
.btn-sm{height:42px;padding:0 18px;font-size:14px;border-radius:12px}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--violet-deep);font-size:14px;font-weight:600}
.btn-text span.arrow{transition:transform var(--ease)}
.btn-text:hover span.arrow{transform:translateX(3px)}

/* ============ 徽章 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;padding:7px 12px;border-radius:999px;font-weight:600}
.badge-cat{background:var(--lav);color:var(--violet-deep)}
.badge-ver{background:#FFF1E8;color:#D96A28}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--text-2);font-weight:500}

/* ============ 移动端顶栏 ============ */
.mobile-bar{
  display:none;align-items:center;justify-content:space-between;gap:12px;
  height:60px;padding:0 20px;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  position:sticky;top:0;z-index:60;
  backdrop-filter:saturate(1.4) blur(8px);
}
.mobile-bar .brand{height:auto;color:var(--text)}
.mobile-bar .brand-text{font-size:14px}
.burger{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;background:#fff;
  transition:border-color var(--ease),background var(--ease);
}
.burger:hover{border-color:var(--line-strong)}
.burger span,.burger span::before,.burger span::after{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform var(--ease),opacity var(--ease);
}
.burger span{position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.burger[aria-expanded="true"] span{background:transparent}
.burger[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}
.overlay{
  position:fixed;inset:0;background:rgba(34,30,63,.5);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:70;
}
.overlay.show{opacity:1;visibility:visible}

/* ============ 面包屑 ============ */
.crumbs{padding:28px 0 0;font-size:13px;color:var(--text-3)}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;padding:0}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li:not(:last-child)::after{content:"/";color:#C9C3DE}
.crumbs a{color:var(--text-2);transition:color var(--ease)}
.crumbs a:hover{color:var(--violet-deep)}
.crumbs .current{color:var(--text);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章布局 ============ */
.article-wrap{padding:20px 0 96px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:48px;align-items:start}
.article-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-md);padding:40px 44px 44px;
}
.article-head{max-width:760px}
.article-head .badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.article-head h1{
  font-size:clamp(28px,3vw,40px);line-height:1.35;font-weight:700;
  letter-spacing:0;text-wrap:balance;
}
.meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:18px;font-size:13px;color:var(--text-2);
}
.meta .sep{width:4px;height:4px;border-radius:50%;background:#C9C3DE}
.cover{margin:28px 0 0;border-radius:20px;overflow:hidden;border:1px solid var(--line);background:var(--lav)}
.cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.cover figcaption{font-size:13px;color:var(--text-3);padding:10px 14px;background:#fff;border-top:1px solid var(--line)}

/* ============ 目录（移动折叠） ============ */
.toc-mobile{display:none;margin:24px 0 0;border:1px solid var(--line);border-radius:16px;background:#fff;overflow:hidden}
.toc-mobile summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;
  padding:14px 18px;font-size:14px;font-weight:600;color:var(--text);cursor:pointer;
}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary::after{content:"+";font-size:18px;color:var(--violet);transition:transform var(--ease)}
.toc-mobile[open] summary::after{transform:rotate(45deg)}
.toc-mobile-body{padding:4px 12px 16px;display:flex;flex-direction:column;gap:2px;border-top:1px solid var(--line)}

/* ============ 正文 ============ */
.prose{max-width:760px;margin-top:32px;font-size:16.5px;line-height:1.95;color:var(--text)}
.prose>*:first-child{margin-top:0}
.prose p{margin:0 0 1.35em}
.prose h2{
  position:relative;font-size:24px;line-height:1.5;font-weight:700;
  margin:2.2em 0 .85em;padding-left:14px;scroll-margin-top:96px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:4px;border-radius:2px;
  background:var(--grad-o);
}
.prose h3{font-size:19px;font-weight:600;margin:1.8em 0 .6em;scroll-margin-top:96px}
.prose h4{font-size:16.5px;font-weight:600;margin:1.6em 0 .5em}
.prose ul,.prose ol{padding-left:1.4em;margin:0 0 1.35em}
.prose li{margin:.35em 0}
.prose li::marker{color:var(--violet-soft)}
.prose strong{font-weight:600}
.prose blockquote{
  margin:1.7em 0;padding:16px 22px;border-radius:0 12px 12px 0;
  background:var(--lav);border-left:3px solid var(--violet);
  color:var(--text-2);font-size:16px;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose table{width:100%;border-collapse:collapse;margin:1.7em 0;font-size:15px;line-height:1.7}
.prose th{background:var(--lav);text-align:left;font-weight:600;padding:12px 14px;border:1px solid var(--line)}
.prose td{padding:12px 14px;border:1px solid var(--line);color:var(--text-2)}
.prose pre{
  background:var(--ink);color:#EDEBFA;padding:18px 20px;border-radius:12px;
  overflow-x:auto;font-size:14px;line-height:1.7;margin:1.7em 0;
}
.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}
.prose :not(pre)>code{background:var(--lav);color:var(--violet-deep);padding:2px 6px;border-radius:6px}
.prose img{border-radius:12px;margin:1.7em auto}
.prose figure{margin:1.7em 0}
.prose figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.prose a{color:var(--violet-deep);border-bottom:1px solid rgba(90,63,208,.32)}
.prose a:hover{border-bottom-color:var(--violet-deep)}
.prose hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

/* ============ 右侧目录 ============ */
.article-aside{position:sticky;top:32px;display:flex;flex-direction:column;gap:16px}
.toc-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--shadow-sm);padding:22px 18px;
}
.toc-card h3{font-size:14px;font-weight:700;letter-spacing:.4px;color:var(--text);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.toc-card h3::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange)}
#tocList{display:flex;flex-direction:column;gap:2px;max-height:52vh;overflow-y:auto}
#tocList::-webkit-scrollbar{width:5px}
#tocList::-webkit-scrollbar-thumb{background:var(--lav-deep);border-radius:5px}
.toc-link{
  display:block;font-size:13px;line-height:1.55;color:var(--text-2);
  padding:7px 10px;border-radius:9px;border-left:2px solid transparent;
  transition:color var(--ease),background var(--ease),border-color var(--ease);
}
.toc-link:hover{color:var(--violet-deep);background:var(--lav)}
.toc-link.toc-l3{padding-left:22px;font-size:12.5px;color:var(--text-3)}
.toc-link.active{color:var(--violet-deep);background:var(--lav);border-left-color:var(--orange);font-weight:600}
.toc-aside-card{
  background:var(--ink);border-radius:20px;padding:22px 18px;color:#fff;
  background-image:radial-gradient(rgba(255,255,255,.28) 1px, transparent 1px);
  background-size:20px 20px;
}
.toc-aside-card p{font-size:13px;line-height:1.7;color:rgba(255,255,255,.72);margin-bottom:14px}
.toc-aside-card .btn{width:100%;height:44px;font-size:14px}

/* ============ 标签 / 分享 ============ */
.article-foot{max-width:760px;margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
.tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  font-size:13px;padding:8px 14px;border-radius:999px;
  background:var(--lav);color:var(--violet-deep);font-weight:500;
  transition:background var(--ease),color var(--ease),transform var(--ease);
}
.tag:hover{background:var(--violet);color:#fff;transform:translateY(-1px)}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:22px}
.share-note{font-size:13px;color:var(--text-3)}

/* ============ 上下篇 ============ */
.pn-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;max-width:760px;margin-top:34px}
.pn-card{
  display:flex;flex-direction:column;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:18px 20px;box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.pn-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.pn-card .pn-dir{font-size:12px;color:var(--text-3);font-weight:600;letter-spacing:.4px}
.pn-card strong{font-size:15px;line-height:1.55;color:var(--text);font-weight:600}
.pn-card.pn-next{text-align:right;align-items:flex-end}

/* ============ 相关推荐 ============ */
.related{margin-top:52px}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px}
.related-head h2{font-size:22px;font-weight:700}
.related-head .btn-text{font-size:13px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.rel-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px}
.rel-body h3{font-size:15.5px;line-height:1.55;font-weight:600;color:var(--text)}
.rel-body p{font-size:13px;line-height:1.7;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-more{font-size:13px;font-weight:600;color:var(--violet-deep);display:inline-flex;align-items:center;gap:6px}
.rel-more .arrow{transition:transform var(--ease)}
.rel-card:hover .rel-more .arrow{transform:translateX(3px)}

/* ============ 空态 ============ */
.empty-card{
  border:1px dashed var(--line-strong);border-radius:var(--r-lg);
  background:#fff;padding:56px 32px;text-align:center;
}
.empty-icon{
  width:64px;height:64px;margin:0 auto 20px;border-radius:20px;
  background:var(--lav);display:flex;align-items:center;justify-content:center;
}
.empty-icon svg{width:30px;height:30px;fill:none;stroke:var(--violet);stroke-width:1.5}
.empty-card h1{font-size:22px;font-weight:700;margin-bottom:12px}
.empty-card p{font-size:14px;color:var(--text-2);max-width:420px;margin:0 auto 24px;line-height:1.8}

/* ============ 页脚 ============ */
.footer{
  margin-top:auto;background:var(--ink);color:rgba(255,255,255,.72);
  padding:64px 0 28px;position:relative;overflow:hidden;
}
.footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.26) 1px, transparent 1px);
  background-size:26px 26px;opacity:.6;
}
.footer .container{position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer .brand{height:auto;color:#fff;margin-bottom:16px}
.footer .brand-text{font-size:15px}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px}
.footer h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px;letter-spacing:.3px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13.5px;color:rgba(255,255,255,.66);transition:color var(--ease),transform var(--ease)}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-contact{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.6)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  font-size:12px;color:rgba(255,255,255,.45);
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:14px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-md);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(8px);z-index:65;
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease),border-color var(--ease);
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--line-strong)}
.to-top svg{width:18px;height:18px;stroke:var(--violet-deep);stroke-width:2;fill:none}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--side-w:208px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .article-aside{display:none}
  .toc-mobile{display:block}
  .article-card{padding:34px 32px 38px}
}
@media (max-width:1023px){
  .shell{grid-template-columns:minmax(0,1fr)}
  .mobile-bar{display:flex}
  .sidebar{
    position:fixed;top:0;right:0;left:auto;
    width:280px;height:100vh;
    transform:translateX(101%);
    transition:transform 260ms cubic-bezier(.2,.7,.3,1);
    padding-top:8px;
  }
  .sidebar.open{transform:translateX(0);box-shadow:var(--shadow-lg)}
  .article-wrap{padding:12px 0 76px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .crumbs{padding:20px 0 0}
  .crumbs .current{max-width:200px}
  .article-card{padding:24px 20px 28px;border-radius:20px}
  .article-head h1{font-size:30px;line-height:1.4}
  .prose{font-size:16px;line-height:1.9;margin-top:24px}
  .prose h2{font-size:21px;margin:1.9em 0 .7em}
  .prose h3{font-size:18px}
  .pn-grid{grid-template-columns:1fr}
  .pn-card.pn-next{text-align:left;align-items:flex-start}
  .related-grid{grid-template-columns:1fr}
  .related-head{flex-direction:column;align-items:flex-start;gap:8px}
  .footer{padding:48px 0 24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:480px){
  .article-card{padding:20px 16px 24px}
  .article-head h1{font-size:26px}
  .btn{height:48px;padding:0 18px;font-size:14px}
  .meta{font-size:12.5px;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .rel-card:hover,.pn-card:hover,.tag:hover,.btn:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --purple:#6C4CE0;
  --purple-deep:#5A3FD0;
  --purple-soft:#A07BFF;
  --orange:#FF8A4C;
  --orange-light:#FFB27A;
  --teal:#2FAF9B;
  --red:#D64545;
  --ink:#221E3F;
  --bg:#F7F5FB;
  --card:#FFFFFF;
  --soft:#EFEBFA;
  --line:#E6E2F2;
  --line-hover:#CFC6F2;
  --text:#1C1A2E;
  --text-2:#5A5770;
  --text-3:#8B87A3;
  --grad:linear-gradient(135deg,#6C4CE0,#A07BFF);
  --grad-warm:linear-gradient(135deg,#FF8A4C,#FFB27A);
  --r-btn:14px;
  --r-card:20px;
  --r-lg:28px;
  --sh-sm:0 1px 2px rgba(34,30,63,.06);
  --sh-md:0 8px 24px -8px rgba(34,30,63,.16);
  --sh-lg:0 24px 60px -20px rgba(34,30,63,.28);
  --sh-glow:0 16px 40px -12px rgba(108,76,224,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sidebar-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0;line-height:1.3}
p{margin:0;text-align:left}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--purple-deep);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--purple)}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
svg{display:block}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  display:flex;
  flex-direction:column;
  padding:0 16px 22px;
  overflow-y:auto;
  z-index:60;
  color:#fff;
  background-color:var(--ink);
  background-image:radial-gradient(rgba(255,255,255,.4) 1px,transparent 1.6px);
  background-size:28px 28px;
}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:6px}
.sidebar-brand{height:88px;display:flex;align-items:center}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  width:34px;height:34px;flex:none;border-radius:11px;
  background:var(--grad);
  display:grid;place-items:center;
  box-shadow:0 8px 18px -8px rgba(108,76,224,.8);
}
.brand-mark svg{width:19px;height:19px;fill:#fff}
.brand-text{font-size:15px;font-weight:600;line-height:1.2;color:#fff}
.side-label{
  font-size:12px;color:rgba(255,255,255,.4);
  padding:14px 12px 8px;letter-spacing:.04em;
}
.nav{display:flex;flex-direction:column;gap:4px}
.nav-link{
  position:relative;
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;
  border-radius:12px;
  font-size:14px;color:rgba(255,255,255,.74);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-link svg{width:16px;height:16px;flex:none;stroke:currentColor;stroke-width:1.6;fill:none;opacity:.85}
.nav-link:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-link.active{background:rgba(255,255,255,.08);color:#fff;font-weight:600}
.nav-link.active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:3px;background:var(--orange);
}
.sidebar-foot{margin-top:auto;padding-top:24px}
.side-download{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:46px;border-radius:var(--r-btn);
  background:var(--grad);color:#fff;font-size:14px;font-weight:600;
  box-shadow:var(--sh-glow);
  transition:transform .18s var(--ease),filter .18s var(--ease);
}
.side-download:hover{transform:translateY(-1px);filter:brightness(1.05);color:#fff}
.side-help{
  display:block;margin-top:14px;text-align:center;
  font-size:13px;color:rgba(255,255,255,.58);
}
.side-help:hover{color:#fff}
.side-version{margin-top:8px;text-align:center;font-size:12px;color:rgba(255,255,255,.34)}

/* ============ 移动端顶栏 ============ */
.mobile-bar{display:none}
.burger{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.burger:hover{border-color:var(--line-hover);box-shadow:var(--sh-sm)}
.burger span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:background .18s var(--ease)}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .22s var(--ease);
}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.burger[aria-expanded="true"] span{background:transparent}
.burger[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}
.mask{
  position:fixed;inset:0;z-index:80;
  background:rgba(34,30,63,.5);
  opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.mask.show{opacity:1;visibility:visible}

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

/* ============ 按钮 / 标签 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:52px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),filter .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--sh-glow)}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.05);color:#fff;box-shadow:0 20px 44px -14px rgba(108,76,224,.55)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{background:#fff;border:1px solid var(--line);color:var(--purple-deep);box-shadow:var(--sh-sm)}
.btn-ghost:hover{border-color:var(--line-hover);transform:translateY(-1px);color:var(--purple-deep);box-shadow:var(--sh-md)}
.btn-light{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.32);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.2);color:#fff;transform:translateY(-1px)}
.btn-sm{height:42px;padding:0 18px;font-size:14px;border-radius:12px}
.btn svg{width:16px;height:16px;stroke:currentColor;stroke-width:1.8;fill:none;transition:transform .18s var(--ease)}
.btn:hover svg.arrow{transform:translateX(3px)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 10px;border-radius:999px;
  background:var(--soft);color:var(--purple-deep);
  font-size:12px;font-weight:600;letter-spacing:.01em;
}
.tag-warm{background:#FFF1E8;color:#C25E23}
.tag-mint{background:#E6F7F3;color:#1E8875}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;
  background:#fff;border:1px solid #DDD5F5;
  font-size:13px;font-weight:600;color:var(--purple-deep);
  box-shadow:var(--sh-sm);
}
.eyebrow svg{width:15px;height:15px;fill:url(#starGrad)}

/* ============ 首屏 ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:60px 0 72px;
  border-bottom:1px solid var(--line);
  background-color:#F1EDFB;
  background-image:
    radial-gradient(circle at 84% 6%,rgba(160,123,255,.42),transparent 52%),
    radial-gradient(circle at 4% 94%,rgba(255,138,76,.22),transparent 48%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(108,76,224,.55) 1px,transparent 1.6px);
  background-size:34px 34px;opacity:.16;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;
}
.hero-title{
  margin:20px 0 0;
  font-size:clamp(30px,3.6vw,44px);
  font-weight:700;line-height:1.25;
  text-wrap:balance;
}
.hero-sub{
  margin-top:16px;max-width:520px;
  font-size:17px;line-height:1.8;color:var(--text-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-pills{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.pill{
  display:inline-flex;align-items:baseline;gap:8px;
  padding:8px 16px;border-radius:999px;
  background:#fff;border:1px solid #DDD5F5;box-shadow:var(--sh-sm);
}
.pill strong{
  font-size:22px;font-weight:700;line-height:1;
  font-variant-numeric:tabular-nums;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
}
.pill span{font-size:12px;color:var(--text-2)}
.hero-media{position:relative}
.hero-media img{
  width:100%;border-radius:var(--r-lg);
  border:1px solid rgba(255,255,255,.7);
  box-shadow:var(--sh-lg);
}
.hero-media::before{
  content:"";position:absolute;inset:-14px -14px auto auto;
  width:120px;height:120px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,138,76,.4),transparent 70%);
  filter:blur(6px);pointer-events:none;
}

/* ============ 信任数据条 ============ */
.trust{padding:36px 0 8px}
.trust-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);padding:24px 0;
}
.trust-item{padding:0 24px}
.trust-item + .trust-item{border-left:1px solid var(--line)}
.trust-item strong{
  display:block;font-size:26px;font-weight:700;line-height:1.2;
  font-variant-numeric:tabular-nums;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
}
.trust-item span{display:block;margin-top:4px;font-size:13px;color:var(--text-3)}

/* ============ 板块通用 ============ */
.section{padding:76px 0}
.section-alt{background:var(--soft)}
.section-head{max-width:720px}
.section-head h2{
  font-size:clamp(24px,2.4vw,31px);
  line-height:1.35;text-wrap:balance;
}
.section-head p{margin-top:12px;font-size:15px;line-height:1.9;color:var(--text-2)}

/* ============ 四步步骤条 ============ */
.steps{
  margin-top:40px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.steps li{position:relative;padding-right:16px}
.steps li:not(:last-child)::after{
  content:"";position:absolute;left:58px;right:8px;top:23px;height:1px;
  background:linear-gradient(90deg,#D9D2F2,var(--line));
}
.step-num{
  position:relative;z-index:1;
  width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--grad);color:#fff;
  font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:var(--sh-glow);
}
.step-body{margin-top:16px}
.step-body h3{font-size:17px;font-weight:600}
.step-body p{margin-top:6px;font-size:14px;line-height:1.8;color:var(--text-2)}

/* ============ 步骤详解 ============ */
.detail-grid{
  margin-top:40px;
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:start;
}
.step-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-md);
  padding:24px;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:var(--line-hover)}
.step-card-num{
  display:inline-grid;place-items:center;
  width:38px;height:38px;border-radius:12px;
  background:var(--soft);color:var(--purple-deep);
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
}
.step-card h3{margin-top:16px;font-size:19px}
.step-card p{margin-top:8px;font-size:14.5px;line-height:1.85;color:var(--text-2)}
.step-card .tag{margin-top:16px}

.side-col{display:flex;flex-direction:column;gap:20px;position:sticky;top:24px}
.callout{
  background:#F5F2FD;
  border-left:3px solid var(--purple);
  border-radius:16px;
  padding:22px;
}
.callout.warm{background:#FFF6EF;border-left-color:var(--orange)}
.callout-head{display:flex;align-items:center;gap:10px}
.callout-head svg{width:20px;height:20px;stroke:var(--purple-deep);stroke-width:1.7;fill:none;flex:none}
.callout.warm .callout-head svg{stroke:#C25E23}
.callout h3{font-size:16px;font-weight:600}
.callout p{margin-top:12px;font-size:14px;line-height:1.9;color:var(--text-2)}
.mini-list{margin-top:14px;display:flex;flex-direction:column;gap:9px}
.mini-list li{
  position:relative;padding-left:16px;
  font-size:13.5px;line-height:1.75;color:var(--text-2);
}
.mini-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:6px;height:6px;border-radius:50%;
  background:var(--orange);
}
.callout:not(.warm) .mini-list li::before{background:var(--purple)}

/* ============ 检查清单 + 配图 ============ */
.check-wrap{
  display:grid;grid-template-columns:.95fr 1.05fr;gap:40px;align-items:center;
  margin-top:40px;
}
.check-figure{position:relative}
.check-figure img{
  width:100%;border-radius:var(--r-lg);
  border:1px solid var(--line);box-shadow:var(--sh-lg);
}
.check-figure figcaption{
  margin-top:12px;font-size:13px;color:var(--text-3);text-align:center;
}
.check-list{display:flex;flex-direction:column;gap:16px}
.check-item{
  display:flex;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:18px 20px;box-shadow:var(--sh-sm);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease);
}
.check-item:hover{border-color:var(--line-hover);box-shadow:var(--sh-md);transform:translateY(-2px)}
.check-ico{
  width:36px;height:36px;flex:none;border-radius:11px;
  background:var(--soft);display:grid;place-items:center;
}
.check-ico svg{width:18px;height:18px;stroke:var(--purple-deep);stroke-width:1.8;fill:none}
.check-item h3{font-size:16px;font-weight:600}
.check-item p{margin-top:4px;font-size:14px;line-height:1.8;color:var(--text-2)}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;margin-top:8px;align-items:start}
.faq-intro h2{font-size:clamp(24px,2.4vw,31px);line-height:1.35}
.faq-intro p{margin-top:14px;font-size:15px;line-height:1.9;color:var(--text-2)}
.faq-intro .btn{margin-top:24px}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  overflow:hidden;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.faq:hover{border-color:var(--line-hover);box-shadow:var(--sh-sm)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:12px 22px;
  font-size:16px;font-weight:600;line-height:1.6;
  cursor:pointer;list-style:none;
}
.faq summary::-webkit-details-marker{display:none}
.faq .plus{
  width:20px;height:20px;flex:none;
  stroke:var(--purple-deep);stroke-width:2;fill:none;
  transition:transform .2s var(--ease);
}
.faq[open]{border-color:var(--line-hover);box-shadow:var(--sh-md)}
.faq[open] summary{color:var(--purple-deep)}
.faq[open] .plus{transform:rotate(45deg)}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--text-2)}

/* ============ CTA ============ */
.cta-section{padding:0 0 84px}
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  padding:44px;
  border-radius:24px;
  color:#fff;
  background-color:var(--ink);
  background-image:
    radial-gradient(circle at 92% 2%,rgba(160,123,255,.5),transparent 55%),
    radial-gradient(circle at 0% 100%,rgba(255,138,76,.32),transparent 52%);
  box-shadow:var(--sh-lg);
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1.6px);
  background-size:26px 26px;opacity:.14;
}
.cta-text{position:relative;max-width:560px}
.cta-text h2{font-size:clamp(22px,2.3vw,29px);line-height:1.35;color:#fff}
.cta-text p{margin-top:12px;font-size:15px;line-height:1.9;color:rgba(255,255,255,.72)}
.cta-note{margin-top:16px;font-size:12px;color:rgba(255,255,255,.45)}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:14px}

/* ============ 页脚 ============ */
.footer{
  position:relative;overflow:hidden;
  padding-top:64px;
  color:rgba(255,255,255,.72);
  background-color:var(--ink);
  background-image:radial-gradient(rgba(255,255,255,.4) 1px,transparent 1.6px);
  background-size:32px 32px;
}
.footer .container{position:relative;z-index:1}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;
}
.footer .brand-text{color:#fff}
.footer-desc{
  margin-top:16px;max-width:330px;
  font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);
}
.footer h4{margin:0 0 16px;font-size:14px;font-weight:600;color:#fff}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66);transition:color .18s var(--ease)}
.footer-links a:hover{color:#fff}
.footer-contact{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:48px;padding:20px 0 26px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:12px;color:rgba(255,255,255,.45);
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  background:#fff;border:1px solid var(--line);
  box-shadow:var(--sh-md);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s var(--ease),visibility .2s var(--ease),transform .2s var(--ease),border-color .18s var(--ease);
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--line-hover);box-shadow:var(--sh-lg)}
.to-top svg{width:18px;height:18px;stroke:var(--purple-deep);stroke-width:2;fill:none}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--sidebar-w:208px}
  .container{padding:0 28px}
  .hero-grid{gap:36px}
}
@media (max-width:1023px){
  :root{--sidebar-w:280px}
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;
    height:58px;padding:0 20px;
    position:sticky;top:0;z-index:70;
    background:rgba(255,255,255,.94);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
    box-shadow:var(--sh-sm);
  }
  .mobile-bar .brand-text{color:var(--text)}
  .sidebar{
    top:0;transform:translateX(-100%);
    transition:transform .28s var(--ease);
    z-index:90;
  }
  .sidebar.open{transform:none}
  .content{margin-left:0}
  .page-hero{padding:44px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{transform:none;order:2}
  .hero-sub{max-width:none}
  .trust-grid{grid-template-columns:repeat(2,1fr);padding:0}
  .trust-item{padding:20px 24px}
  .trust-item + .trust-item{border-left:0}
  .trust-item:nth-child(even){border-left:1px solid var(--line)}
  .trust-item:nth-child(n+3){border-top:1px solid var(--line)}
  .detail-grid{grid-template-columns:1fr}
  .side-col{position:static}
  .check-wrap{grid-template-columns:1fr;gap:28px}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .page-hero{padding:36px 0 48px}
  .hero-title{font-size:30px}
  .hero-sub{font-size:16px}
  .steps{grid-template-columns:repeat(2,1fr);gap:24px 18px}
  .steps li{padding-right:0}
  .steps li::after{display:none}
  .step-cards{grid-template-columns:1fr}
  .btn{height:48px;padding:0 20px;font-size:14.5px}
  .btn-sm{height:40px}
  .hero-actions .btn{flex:1 1 180px}
  .cta-band{padding:28px 22px;border-radius:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer{padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:32px}
  .faq summary{font-size:15px;padding:12px 18px}
  .faq-body{padding:0 18px 18px}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:480px){
  .hero-pills{gap:8px}
  .pill{padding:7px 13px}
  .pill strong{font-size:19px}
  .trust-item{padding:16px 18px}
  .trust-item strong{font-size:22px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .card:hover,.check-item:hover,.btn:hover,.btn-primary:hover,.btn-ghost:hover{transform:none}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --purple:#6C4CE0;
  --purple-deep:#5A3FD0;
  --purple-soft:#A07BFF;
  --orange:#FF8A4C;
  --orange-light:#FFB27A;
  --teal:#2FAF9B;
  --danger:#D64545;
  --ink:#221E3F;
  --ink-2:#3A2E6E;
  --bg:#F7F5FB;
  --soft:#EFEBFA;
  --card:#FFFFFF;
  --line:#E6E2F2;
  --line-hover:#CFC6F2;
  --text:#1C1A2E;
  --muted:#5A5770;
  --weak:#8B87A3;
  --grad-brand:linear-gradient(135deg,#6C4CE0 0%,#A07BFF 100%);
  --grad-accent:linear-gradient(135deg,#FF8A4C 0%,#FFB27A 100%);
  --r-btn:14px;
  --r-card:22px;
  --r-lg:28px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(34,30,63,.06);
  --sh-md:0 8px 24px -8px rgba(34,30,63,.16);
  --sh-lg:0 24px 60px -20px rgba(34,30,63,.28);
  --sh-btn:0 16px 40px -12px rgba(108,76,224,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sidebar-w:240px;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:0;text-wrap:balance}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:var(--purple-deep);text-decoration:none;transition:color 180ms var(--ease)}
a:hover{color:var(--purple)}
button{font:inherit;color:inherit}
svg{display:block}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
::selection{background:rgba(108,76,224,.18);color:var(--ink)}

/* ============ 布局骨架 ============ */
.main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
.container{width:100%;max-width:1140px;margin:0 auto;padding:0 32px}
section[id]{scroll-margin-top:80px}

/* ============ 左侧导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--ink);
  padding:0 14px 20px;
  overflow-y:auto;
  z-index:60;
  display:flex;flex-direction:column;
}
.sidebar::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.45) 1px,transparent 1px);
  background-size:28px 28px;
  opacity:.22;pointer-events:none;
}
.side-brand{
  position:relative;z-index:1;
  height:88px;display:flex;align-items:center;gap:10px;
  color:#fff;padding-left:6px;flex:0 0 auto;
}
.side-brand:hover{color:#fff}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
  width:34px;height:34px;flex:0 0 auto;border-radius:11px;
  background:var(--grad-brand);
  display:grid;place-items:center;
  box-shadow:0 8px 20px -10px rgba(108,76,224,.9);
}
.brand-mark svg{width:20px;height:20px;fill:#fff}
.brand-text{font-size:15px;font-weight:700;line-height:1.3;letter-spacing:0}
.side-nav{position:relative;z-index:1;display:grid;gap:4px;margin-top:6px}
.nav-link{
  position:relative;display:flex;align-items:center;
  height:44px;padding:0 14px;border-radius:12px;
  color:#C9C4E2;font-size:14px;font-weight:500;
  transition:background-color 180ms var(--ease),color 180ms var(--ease);
}
.nav-link:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-link.active{background:rgba(255,255,255,.08);color:#fff}
.nav-link.active::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  border-radius:2px;background:var(--orange);
}
.side-foot{position:relative;z-index:1;margin-top:auto;padding-top:24px;display:grid;gap:12px}
.side-cta{width:100%;height:46px;font-size:14px;padding:0 16px}
.side-help{font-size:13px;color:#A9A3C6;text-align:center}
.side-help:hover{color:#fff}
.side-ver{font-size:12px;color:#7E78A0;text-align:center;letter-spacing:.02em;font-variant-numeric:tabular-nums}

/* ============ 移动端顶部栏 ============ */
.mobile-bar{display:none}
.backdrop{display:none;position:fixed;inset:0;background:rgba(34,30,63,.5);z-index:55}
.backdrop.show{display:block}
.burger{
  width:44px;height:44px;border:0;background:transparent;
  border-radius:12px;cursor:pointer;display:grid;place-items:center;
}
.burger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;border-radius:2px;background:var(--ink);
}
.burger span::before{top:-6px}
.burger span::after{top:6px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),
             background-color 180ms var(--ease),border-color 180ms var(--ease),filter 180ms var(--ease);
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-btn)}
.btn-primary:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.04)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{background:#fff;color:var(--purple-deep);border-color:var(--line);box-shadow:var(--sh-sm)}
.btn-ghost:hover{border-color:var(--line-hover);color:var(--purple-deep);transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-sm{height:44px;padding:0 18px;font-size:14px;border-radius:12px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  background:none;border:0;padding:0;cursor:pointer;
  color:var(--purple-deep);font-size:14px;font-weight:600;
}
.btn-text:hover{color:var(--purple)}
.btn-text .arw{transition:transform 180ms var(--ease)}
.btn-text:hover .arw{transform:translateX(3px)}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;background:var(--soft);color:var(--purple-deep);
  white-space:nowrap;
}
.badge-ver{background:#FFF1E8;color:#C25A1E}
.badge-ok{background:rgba(47,175,155,.13);color:#1F8B7B}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--muted);font-weight:500}

/* ============ 首屏 ============ */
.hero{
  position:relative;overflow:hidden;
  padding:64px 0 72px;
  background:linear-gradient(160deg,#EFEBFA 0%,#F7F5FB 58%,#FFF3EA 100%);
  border-bottom:1px solid var(--line);
}
.hero-media{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.17;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-180px;top:-200px;width:560px;height:560px;
  background:radial-gradient(circle,rgba(255,138,76,.34),transparent 66%);
  pointer-events:none;
}
.hero::before{
  content:"";position:absolute;left:-140px;bottom:-220px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(108,76,224,.28),transparent 68%);
  pointer-events:none;
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);
  font-size:12.5px;font-weight:600;color:var(--purple-deep);
  box-shadow:var(--sh-sm);
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--teal);display:block;box-shadow:0 0 0 3px rgba(47,175,155,.16)}
.hero h1{
  margin-top:20px;
  font-size:clamp(32px,3.6vw,46px);
  line-height:1.24;
  letter-spacing:-.4px;
}
.hero-sub{margin-top:16px;font-size:17px;line-height:1.8;color:var(--muted);max-width:520px}
.hero-tags{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px}
.hero-panel{
  position:relative;
  background:#fff;border:1px solid var(--line);border-radius:24px;
  box-shadow:var(--sh-lg);
  padding:18px;
}
.hero-panel .preview{
  border-radius:16px;overflow:hidden;aspect-ratio:16/10;
  background:var(--soft);
}
.hero-panel .preview img{width:100%;height:100%;object-fit:cover}
.panel-dl{margin-top:16px;display:grid;gap:10px}
.panel-dl .btn{width:100%}
.panel-note{
  margin-top:12px;font-size:12.5px;color:var(--weak);
  text-align:center;line-height:1.7;
}

/* ============ 通用板块 ============ */
.sec{padding:72px 0}
.sec-soft{background:linear-gradient(180deg,#F2EEFB 0%,#F7F5FB 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:680px;margin-bottom:36px}
.sec-head h2{font-size:clamp(24px,2.6vw,32px);letter-spacing:-.3px}
.sec-head p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--muted)}
.sec-head .kicker{
  display:inline-block;margin-bottom:14px;
  font-size:12.5px;font-weight:700;letter-spacing:.08em;
  color:var(--orange);text-transform:uppercase;
}

/* ============ 平台下载卡 ============ */
.platform-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.p-card{
  display:flex;flex-direction:column;gap:14px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-sm);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.p-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:var(--line-hover)}
.p-ico{
  width:44px;height:44px;border-radius:12px;background:var(--soft);
  display:grid;place-items:center;color:var(--purple);
}
.p-ico svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.p-card h3{font-size:19px}
.p-meta{display:flex;flex-wrap:wrap;gap:8px}
.p-card p{font-size:14px;line-height:1.8;color:var(--muted);flex:1 1 auto}
.p-card .btn-text{margin-top:2px}

/* ============ 提示条 ============ */
.callout{
  display:flex;gap:12px;align-items:flex-start;
  margin-top:26px;padding:18px 22px;border-radius:16px;
  background:#FFF6F0;border:1px solid #FFDCC6;
  font-size:14px;line-height:1.85;color:#8A4A20;
}
.callout svg{flex:0 0 auto;width:20px;height:20px;margin-top:3px;stroke:#E0703A;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.callout strong{color:#6E3814}

/* ============ 系统要求 ============ */
.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.spec-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-sm);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.spec-card:hover{border-color:var(--line-hover);box-shadow:var(--sh-md)}
.spec-card h3{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:18px;margin-bottom:6px}
.spec-card h3 .badge{font-size:11px;height:24px}
.spec-list{margin:0}
.spec-row{
  display:grid;grid-template-columns:88px 1fr;gap:12px;
  padding:11px 0;border-top:1px solid var(--line);
  font-size:13.5px;line-height:1.7;
}
.spec-row:first-child{border-top:0}
.spec-row dt{color:var(--weak);font-weight:500}
.spec-row dd{margin:0;color:var(--text)}
.spec-foot{margin-top:18px;display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* ============ 安装时间线 ============ */
.timeline{position:relative;margin-top:8px}
.tl-item{position:relative;padding-left:62px;padding-bottom:30px}
.tl-item::before{
  content:"";position:absolute;left:20px;top:42px;bottom:0;width:1px;background:var(--line);
}
.tl-item:last-child{padding-bottom:0}
.tl-item:last-child::before{display:none}
.tl-num{
  position:absolute;left:0;top:0;width:41px;height:41px;border-radius:50%;
  background:var(--grad-brand);color:#fff;
  display:grid;place-items:center;
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:0 10px 24px -12px rgba(108,76,224,.95);
}
.tl-body h3{font-size:18px;margin-bottom:6px}
.tl-body p{font-size:14.5px;line-height:1.85;color:var(--muted)}
.tl-body .badge{margin-top:10px}

/* ============ FAQ 手风琴 ============ */
.faq-list{display:grid;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  overflow:hidden;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.faq-item:hover{border-color:var(--line-hover)}
.faq-item[open]{border-color:var(--line-hover);box-shadow:var(--sh-md)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:12px 24px;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--purple-deep)}
.faq-plus{position:relative;width:20px;height:20px;flex:0 0 auto;transition:transform 200ms var(--ease)}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--purple);border-radius:2px}
.faq-plus::before{left:9px;top:2px;width:2px;height:16px}
.faq-plus::after{left:2px;top:9px;width:16px;height:2px}
.faq-item[open] .faq-plus{transform:rotate(45deg)}
.faq-body{padding:0 24px 20px;font-size:15px;line-height:1.9;color:var(--muted)}
.faq-body p+p{margin-top:10px}

/* ============ CTA ============ */
.cta-wrap{padding:0 0 84px}
.cta{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  background:linear-gradient(135deg,#221E3F 0%,#3A2E6E 52%,#6C4CE0 100%);
  color:#fff;padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:var(--sh-lg);
}
.cta::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.4) 1px,transparent 1px);
  background-size:26px 26px;opacity:.16;pointer-events:none;
}
.cta-copy{position:relative;z-index:1;max-width:600px}
.cta h2{font-size:clamp(22px,2.4vw,28px);color:#fff}
.cta p{margin-top:12px;font-size:14.5px;line-height:1.85;color:#CFC9E8}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}
.cta .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.32)}
.cta .btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.6);color:#fff}

/* ============ 页脚 ============ */
.footer{
  position:relative;overflow:hidden;
  background:var(--ink);color:#CFC9E8;
  padding:64px 0 0;margin-top:auto;
}
.footer::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.45) 1px,transparent 1px);
  background-size:30px 30px;opacity:.2;pointer-events:none;
}
.footer .container{position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px;padding-bottom:48px}
.footer .brand{color:#fff}
.footer .brand:hover{color:#fff}
.footer-desc{margin-top:16px;font-size:13.5px;line-height:1.9;color:#A9A3C6;max-width:330px}
.footer h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:13.5px;color:#B7B1D2}
.footer-links a:hover{color:#fff}
.footer-contact{font-size:13.5px;line-height:1.9;color:#A9A3C6}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;font-size:12px;color:#8B85A8;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--sidebar-w:208px}
  .container{padding:0 26px}
  .hero-inner{gap:36px}
}
@media (max-width:1023px){
  :root{--sidebar-w:280px}
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:60px;padding:0 16px;
    background:rgba(255,255,255,.94);
    backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);box-shadow:var(--sh-sm);
    z-index:50;
  }
  .main{margin-left:0;padding-top:60px}
  .sidebar{transform:translateX(-100%);transition:transform 260ms var(--ease);z-index:60}
  .sidebar.open{transform:translateX(0)}
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .hero-panel{max-width:520px}
  .platform-grid,.spec-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cta{flex-direction:column;align-items:flex-start;padding:36px 32px}
  .sec{padding:60px 0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .hero{padding:44px 0 52px}
  .hero h1{font-size:clamp(26px,6.6vw,32px)}
  .hero-sub{font-size:15.5px}
  .platform-grid,.spec-grid{grid-template-columns:1fr}
  .sec{padding:52px 0}
  .sec-head{margin-bottom:26px}
  .cta{padding:30px 22px;border-radius:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .cta-wrap{padding-bottom:64px}
  .faq-item summary{font-size:15px;padding:12px 18px;min-height:60px}
  .faq-body{padding:0 18px 18px;font-size:14.5px}
  .footer{padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .tl-item{padding-left:54px}
  .tl-num{width:36px;height:36px;font-size:13px}
  .tl-item::before{left:17px;top:38px}
}
@media (max-width:480px){
  .brand-text{font-size:14px}
  .hero-tags{gap:8px}
  .badge{font-size:11px;padding:0 10px}
  .callout{padding:16px 18px;font-size:13.5px}
}

/* ============ 动效降级 ============ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    transition-duration:.01ms !important;
    animation-duration:.01ms !important;
  }
  .p-card:hover,.btn:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --purple:#6C4CE0;
  --purple-deep:#5A3FD0;
  --purple-soft:#A07BFF;
  --orange:#FF8A4C;
  --orange-light:#FFB27A;
  --orange-soft:#FFF1E8;
  --teal:#2FAF9B;
  --teal-soft:#E8F7F4;
  --red:#D64545;
  --red-soft:#FDEDED;
  --ink:#221E3F;
  --bg:#F7F5FB;
  --card:#FFFFFF;
  --lav:#EFEBFA;
  --line:#E6E2F2;
  --line-hover:#CFC6F2;
  --text:#1C1A2E;
  --text-2:#5A5770;
  --text-3:#8B87A3;
  --r-btn:14px;
  --r-card:22px;
  --r-lg:28px;
  --sh-sm:0 1px 2px rgba(34,30,63,.06);
  --sh-md:0 8px 24px -8px rgba(34,30,63,.16);
  --sh-lg:0 24px 60px -20px rgba(34,30,63,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--purple-deep);text-decoration:none;transition:color 180ms var(--ease);}
a:hover{color:var(--purple);}
h1,h2,h3,h4,p,dl,dd,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 侧边栏 ---------- */
.sidebar{
  position:fixed;inset:0 auto 0 0;width:240px;
  background:var(--ink);
  color:#fff;
  padding:0 16px 22px;
  display:flex;flex-direction:column;
  overflow-y:auto;
  z-index:70;
  transition:transform 240ms var(--ease);
}
.sidebar::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(1px 1px at 30px 60px,rgba(255,255,255,.35),transparent),
    radial-gradient(1px 1px at 180px 120px,rgba(255,255,255,.28),transparent),
    radial-gradient(1px 1px at 90px 260px,rgba(255,255,255,.3),transparent),
    radial-gradient(1px 1px at 200px 380px,rgba(255,255,255,.25),transparent),
    radial-gradient(1px 1px at 60px 520px,rgba(255,255,255,.3),transparent),
    radial-gradient(1px 1px at 150px 660px,rgba(255,255,255,.22),transparent),
    radial-gradient(1px 1px at 40px 780px,rgba(255,255,255,.28),transparent);
  background-repeat:no-repeat;
  opacity:.9;
}
.sidebar > *{position:relative;z-index:1;}
.brand{display:flex;align-items:center;gap:10px;color:#fff;}
.sidebar .brand{height:88px;flex:none;}
.brand-mark{
  width:34px;height:34px;flex:none;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--purple),var(--purple-soft));
  box-shadow:0 8px 20px -8px rgba(108,76,224,.8);
}
.brand-mark svg{width:19px;height:19px;fill:#fff;}
.brand-text{font-size:15px;font-weight:700;letter-spacing:0;line-height:1.3;}
.sidebar .brand-text{color:#fff;}
.nav{display:flex;flex-direction:column;gap:4px;margin-top:8px;}
.nav-label{font-size:12px;color:rgba(255,255,255,.42);padding:16px 14px 8px;letter-spacing:.5px;}
.nav-link{
  position:relative;display:flex;align-items:center;height:44px;
  padding:0 14px;border-radius:12px;font-size:14px;
  color:rgba(255,255,255,.72);
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.nav-link::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:3px;background:transparent;transition:background 180ms var(--ease);
}
.nav-link:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-link.active{background:rgba(255,255,255,.08);color:#fff;font-weight:600;}
.nav-link.active::before{background:var(--orange);}
.sidebar-foot{margin-top:auto;padding-top:22px;}
.side-down{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:46px;border-radius:14px;color:#fff;font-size:14px;font-weight:600;
  background:linear-gradient(135deg,var(--purple),var(--purple-soft));
  box-shadow:0 16px 40px -18px rgba(108,76,224,.9);
  transition:transform 180ms var(--ease),filter 180ms var(--ease);
}
.side-down:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.04);}
.side-down svg{width:15px;height:15px;fill:#fff;}
.side-links{margin-top:14px;display:flex;flex-direction:column;gap:6px;}
.side-links a{font-size:13px;color:rgba(255,255,255,.6);}
.side-links a:hover{color:#fff;}
.side-ver{margin-top:16px;font-size:12px;color:rgba(255,255,255,.38);font-variant-numeric:tabular-nums;}

/* ---------- 移动顶栏 ---------- */
.mobile-bar{
  display:none;align-items:center;justify-content:space-between;
  height:58px;padding:0 18px;
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-sm);
}
.mobile-bar .brand-text{color:var(--text);font-size:14px;}
.burger{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);background:#fff;
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);position:relative;}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);
}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(34,30,63,.5);
  opacity:0;pointer-events:none;transition:opacity 200ms var(--ease);z-index:65;
}
.drawer-mask.show{opacity:1;pointer-events:auto;}

/* ---------- 主区域 ---------- */
.main{margin-left:240px;min-height:100vh;display:flex;flex-direction:column;}
.page{flex:1;padding-bottom:80px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform 180ms var(--ease),filter 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease);
}
.btn-primary{
  color:#fff;background:linear-gradient(135deg,var(--purple),var(--purple-soft));
  box-shadow:0 16px 40px -12px rgba(108,76,224,.45);
}
.btn-primary:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.04);}
.btn-ghost{
  background:#fff;border:1px solid var(--line);color:var(--purple-deep);
  box-shadow:var(--sh-sm);
}
.btn-ghost:hover{border-color:var(--line-hover);color:var(--purple);transform:translateY(-1px);}
.btn-sm{height:44px;padding:0 18px;font-size:14px;border-radius:12px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--purple-deep);
}
.btn-text .arrow{transition:transform 180ms var(--ease);}
.btn-text:hover .arrow{transform:translateX(3px);}

/* ---------- 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.5;
}
.tag-purple{background:var(--lav);color:var(--purple-deep);}
.tag-orange{background:var(--orange-soft);color:#C2601F;}
.tag-teal{background:var(--teal-soft);color:#1F7F70;}
.tag svg{width:12px;height:12px;fill:currentColor;}

/* ---------- Hero ---------- */
.hero{position:relative;padding:32px 0 0;}
.hero-card{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  background:
    radial-gradient(760px 340px at 6% -10%,rgba(108,76,224,.22),transparent 62%),
    radial-gradient(560px 300px at 96% 112%,rgba(255,138,76,.2),transparent 60%),
    var(--lav);
  border:1px solid #E2DBF7;
  padding:52px 48px;
}
.hero-card::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(1px 1px at 12% 22%,rgba(108,76,224,.35),transparent),
    radial-gradient(1px 1px at 78% 12%,rgba(255,138,76,.35),transparent),
    radial-gradient(1px 1px at 88% 68%,rgba(108,76,224,.3),transparent),
    radial-gradient(1px 1px at 34% 86%,rgba(255,138,76,.28),transparent),
    radial-gradient(1px 1px at 62% 46%,rgba(108,76,224,.24),transparent);
  background-repeat:no-repeat;
}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--purple-deep);background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px;box-shadow:var(--sh-sm);}
.hero-eyebrow svg{width:14px;height:14px;fill:var(--orange);}
.hero h1{
  margin-top:18px;
  font-size:clamp(34px,4vw,52px);
  line-height:1.18;font-weight:700;letter-spacing:0;
  text-wrap:balance;
}
.hero h1 em{font-style:normal;color:var(--purple-deep);}
.hero-sub{margin-top:16px;font-size:18px;color:var(--text-2);font-weight:500;}
.hero-lead{margin-top:14px;font-size:15px;color:var(--text-2);line-height:1.9;max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.stat-badge{
  display:inline-flex;align-items:baseline;gap:8px;
  background:#fff;border:1px solid #DED6F5;border-radius:999px;
  padding:8px 16px;box-shadow:var(--sh-sm);
}
.stat-badge b{
  font-size:20px;font-weight:700;font-variant-numeric:tabular-nums;
  background:linear-gradient(135deg,var(--purple),var(--orange));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-badge span{font-size:12px;color:var(--text-2);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;height:100%;object-fit:cover;border-radius:var(--r-lg);
  box-shadow:var(--sh-lg);
  border:1px solid rgba(255,255,255,.6);
  transform:rotate(-2deg);
  transition:transform 320ms var(--ease);
}
.hero-visual:hover img{transform:rotate(0deg);}
.hero-visual .visual-caption{
  margin-top:14px;font-size:13px;color:var(--text-3);text-align:right;
}

/* ---------- 板块通用 ---------- */
.section{padding-top:72px;}
.section-head{max-width:720px;}
.section-head h2{font-size:clamp(24px,2.4vw,30px);line-height:1.3;font-weight:700;text-wrap:balance;}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15px;}

/* ---------- 入口卡 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:32px;}
.entry-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-md);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:var(--line-hover);}
.icon-box{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:var(--lav);
}
.icon-box svg{width:20px;height:20px;stroke:var(--purple);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.entry-card h3{margin-top:18px;font-size:21px;font-weight:600;}
.entry-card p{margin-top:10px;font-size:15px;color:var(--text-2);}
.entry-list{margin-top:16px;display:flex;flex-direction:column;gap:8px;}
.entry-list li{position:relative;padding-left:18px;font-size:14px;color:var(--text-2);}
.entry-list li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;
  background:linear-gradient(135deg,var(--purple),var(--orange));
}
.entry-card .btn-text{margin-top:20px;}

/* ---------- 双栏安全问答 ---------- */
.secure-grid{display:grid;grid-template-columns:280px minmax(0,1fr);gap:32px;margin-top:34px;align-items:start;}
.index-card{
  position:sticky;top:24px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 18px;box-shadow:var(--sh-sm);
}
.index-title{font-size:13px;font-weight:600;color:var(--text-3);letter-spacing:.6px;padding:0 8px 12px;}
.index-link{
  display:flex;gap:10px;align-items:flex-start;
  padding:9px 10px;border-radius:10px;font-size:13.5px;color:var(--text-2);line-height:1.6;
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.index-link .idx{
  flex:none;font-size:12px;font-weight:700;color:var(--text-3);
  font-variant-numeric:tabular-nums;padding-top:2px;
}
.index-link:hover{background:var(--lav);color:var(--purple-deep);}
.index-link.active{background:var(--lav);color:var(--purple-deep);font-weight:600;}
.index-link.active .idx{color:var(--purple);}

.faq-wrap{min-width:0;}
.callout{
  display:flex;gap:14px;
  background:var(--orange-soft);
  border:1px solid #FFDCC4;
  border-radius:18px;
  padding:18px 20px;
  margin:20px 0;
}
.callout .c-icon{
  flex:none;width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:#fff;box-shadow:var(--sh-sm);
}
.callout .c-icon svg{width:17px;height:17px;stroke:var(--orange);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.callout strong{display:block;font-size:15px;font-weight:600;color:#8A4A18;}
.callout p{margin-top:4px;font-size:14px;color:#9A6134;line-height:1.8;}

.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:16px;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-sm);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.faq-item:hover{border-color:var(--line-hover);box-shadow:var(--sh-md);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:14px 22px;
  font-size:16px;font-weight:600;color:var(--text);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:none;font-size:22px;font-weight:400;color:var(--purple);
  transition:transform 180ms var(--ease);line-height:1;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--text-2);line-height:1.9;}
.faq-body p + p{margin-top:10px;}
.faq-body strong{color:var(--text);font-weight:600;}

/* ---------- 自查清单 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:32px;}
.check-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-sm);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.check-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:var(--line-hover);}
.check-card .num{
  display:inline-block;font-size:12px;font-weight:700;color:var(--purple-deep);
  background:var(--lav);border-radius:999px;padding:3px 10px;font-variant-numeric:tabular-nums;
}
.check-card h3{margin-top:14px;font-size:19px;font-weight:600;}
.check-card p{margin-top:8px;font-size:14.5px;color:var(--text-2);}

/* ---------- CTA ---------- */
.cta{margin-top:80px;}
.cta-card{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  padding:44px 48px;
  background:
    radial-gradient(600px 260px at 88% 0%,rgba(255,138,76,.4),transparent 60%),
    linear-gradient(135deg,#3B2E7A 0%,var(--ink) 60%);
  color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-card::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(1px 1px at 14% 30%,rgba(255,255,255,.35),transparent),
    radial-gradient(1px 1px at 46% 72%,rgba(255,255,255,.28),transparent),
    radial-gradient(1px 1px at 72% 24%,rgba(255,255,255,.3),transparent),
    radial-gradient(1px 1px at 90% 62%,rgba(255,255,255,.25),transparent);
  background-repeat:no-repeat;
}
.cta-card > *{position:relative;z-index:1;}
.cta-card h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;}
.cta-card p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.78);max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.cta .btn-ghost{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.28);color:#fff;}
.cta .btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.45);}

/* ---------- 页脚 ---------- */
.footer{
  position:relative;overflow:hidden;
  background:var(--ink);color:rgba(255,255,255,.72);
  padding:56px 0 0;margin-top:0;
}
.footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(1px 1px at 8% 24%,rgba(255,255,255,.3),transparent),
    radial-gradient(1px 1px at 32% 68%,rgba(255,255,255,.24),transparent),
    radial-gradient(1px 1px at 58% 18%,rgba(255,255,255,.3),transparent),
    radial-gradient(1px 1px at 76% 74%,rgba(255,255,255,.22),transparent),
    radial-gradient(1px 1px at 92% 38%,rgba(255,255,255,.26),transparent);
  background-repeat:no-repeat;
}
.footer .container{position:relative;z-index:1;}
.footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:40px;}
.footer h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer-desc{margin-top:16px;font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.6);max-width:320px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-links a:hover{color:#fff;}
.footer-contact{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.62);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.45);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .sidebar{width:208px;padding:0 14px 20px;}
  .main{margin-left:208px;}
  .container{padding:0 26px;}
}
@media (max-width:1023px){
  .mobile-bar{display:flex;}
  .sidebar{width:280px;transform:translateX(-100%);box-shadow:var(--sh-lg);}
  .sidebar.open{transform:translateX(0);}
  .main{margin-left:0;}
  .hero-card{padding:40px 32px;}
  .hero-inner{grid-template-columns:1fr;gap:32px;}
  .hero-visual img{transform:rotate(0deg);}
  .hero-visual .visual-caption{text-align:left;}
  .secure-grid{grid-template-columns:1fr;gap:22px;}
  .index-card{position:static;}
  .check-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .hero{padding-top:20px;}
  .hero-card{padding:30px 22px;border-radius:22px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .section{padding-top:52px;}
  .entry-grid{grid-template-columns:1fr;}
  .check-grid{grid-template-columns:1fr;}
  .cta{margin-top:56px;}
  .cta-card{padding:30px 22px;border-radius:22px;}
  .cta-actions .btn{width:100%;}
  .faq-item summary{font-size:15px;padding:14px 18px;min-height:56px;}
  .faq-body{padding:0 18px 18px;font-size:14.5px;}
  .footer{padding-top:44px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .page{padding-bottom:56px;}
}
@media (max-width:480px){
  .brand-text{font-size:13px;}
  .hero-stats{gap:8px;}
  .stat-badge{padding:7px 12px;}
  .stat-badge b{font-size:17px;}
  .entry-card,.check-card{padding:22px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  .hero-visual img,.entry-card:hover,.check-card:hover,.btn:hover{transform:none !important;}
}

/* roulang page: category4 */
:root{
  --purple:#6C4CE0;
  --purple-deep:#5A3FD0;
  --purple-soft:#A07BFF;
  --orange:#FF8A4C;
  --orange-soft:#FFB27A;
  --orange-bg:#FFF1E8;
  --teal:#2FAF9B;
  --teal-bg:#E9F7F4;
  --red:#D64545;
  --deep:#221E3F;
  --bg:#F7F5FB;
  --card:#FFFFFF;
  --lav:#EFEBFA;
  --line:#E6E2F2;
  --line-hover:#CFC6F2;
  --ink:#1C1A2E;
  --ink-2:#5A5770;
  --ink-3:#8B87A3;
  --grad-brand:linear-gradient(135deg,#6C4CE0 0%,#A07BFF 100%);
  --grad-warm:linear-gradient(135deg,#FF8A4C 0%,#FFB27A 100%);
  --r-sm:12px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:24px;
  --r-2xl:28px;
  --sh-sm:0 1px 2px rgba(34,30,63,.06);
  --sh-md:0 8px 24px -8px rgba(34,30,63,.16);
  --sh-lg:0 24px 60px -20px rgba(34,30,63,.28);
  --sh-glow:0 16px 40px -12px rgba(108,76,224,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sidebar-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:var(--purple-deep);text-decoration:none;transition:color 180ms var(--ease)}
a:hover{color:var(--purple)}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:0;color:var(--ink);text-wrap:balance}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ===== 布局骨架 ===== */
.main-wrap{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
.scrim{display:none}

/* ===== 品牌 ===== */
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  width:32px;height:32px;flex:0 0 auto;border-radius:10px;
  background:var(--grad-brand);display:grid;place-items:center;
  box-shadow:0 6px 16px -6px rgba(108,76,224,.8);
}
.brand-mark svg{width:18px;height:18px;fill:#fff}
.brand-text{font-size:15px;font-weight:600;line-height:1.25;letter-spacing:.2px}

/* ===== 左侧竖向导航 ===== */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);height:100vh;
  overflow-y:auto;z-index:60;display:flex;flex-direction:column;
  padding:0 16px 20px;
  background-color:var(--deep);
  background-image:radial-gradient(circle,rgba(255,255,255,.22) 1px,transparent 1px);
  background-size:26px 26px;
}
.sidebar .brand{height:88px;color:#fff;width:100%}
.sidebar .brand-text{color:#fff;font-size:14.5px}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-top:6px}
.nav-item{
  position:relative;display:flex;align-items:center;height:44px;padding:0 14px;
  border-radius:12px;font-size:14px;color:rgba(255,255,255,.72);
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:rgba(255,255,255,.08);color:#fff;font-weight:600}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;
  border-radius:3px;background:var(--orange);
}
.sidebar-foot{margin-top:auto;padding-top:24px}
.sidebar-note{font-size:12px;line-height:1.8;color:rgba(255,255,255,.48);margin-top:12px}
.version-tag{display:inline-block;margin-top:10px;font-size:12px;color:rgba(255,255,255,.4);font-variant-numeric:tabular-nums}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 24px;border-radius:14px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),filter 180ms var(--ease);
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-glow)}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.04);color:#fff}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--purple-deep);box-shadow:var(--sh-sm)}
.btn-ghost:hover{border-color:var(--line-hover);transform:translateY(-1px);box-shadow:var(--sh-md);color:var(--purple-deep)}
.btn-block{width:100%}
.btn-sm{height:42px;padding:0 18px;font-size:14px;border-radius:12px}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--purple-deep)}
.link-arrow::after{content:"→";transition:transform 180ms var(--ease)}
.link-arrow:hover::after{transform:translateX(3px)}

/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;letter-spacing:.2px;
}
.badge-version{background:var(--orange-bg);color:#D9642A}
.badge-type{background:var(--lav);color:var(--purple-deep)}
.badge-safe{background:var(--teal-bg);color:#1F8B7B}

/* ===== 顶部移动导航 ===== */
.mobile-bar{display:none}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;background:var(--lav);border-bottom:1px solid var(--line)}
.hero-bg{
  position:absolute;inset:0;opacity:.14;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;width:560px;height:560px;right:-180px;top:-240px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,224,.36),rgba(108,76,224,0) 65%);
}
.hero::after{
  content:"";position:absolute;width:420px;height:420px;left:-160px;bottom:-240px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,138,76,.26),rgba(255,138,76,0) 66%);
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center;
  padding-top:36px;padding-bottom:64px;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);padding-top:24px}
.crumbs a{color:var(--ink-2)}
.crumbs a:hover{color:var(--purple-deep)}
.crumbs span.sep{color:var(--ink-3)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;margin-top:22px;
  border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:12.5px;font-weight:600;color:var(--purple-deep);box-shadow:var(--sh-sm);
}
.eyebrow svg{width:13px;height:13px;fill:var(--orange)}
.hero h1{font-size:clamp(30px,3.6vw,46px);line-height:1.22;margin-top:18px}
.lede{margin-top:16px;font-size:16.5px;line-height:1.85;color:var(--ink-2);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;font-size:13px;color:var(--ink-3)}
.hero-meta i{font-style:normal;color:var(--ink-2);font-weight:600;font-variant-numeric:tabular-nums}

.hero-visual{position:relative}
.visual-frame{
  border-radius:var(--r-2xl);padding:14px;box-shadow:var(--sh-lg);
  background-image:linear-gradient(rgba(34,30,63,.22),rgba(34,30,63,.22)),url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  transform:rotate(-2deg);
}
.visual-frame img{width:100%;height:auto;border-radius:18px;object-fit:cover;box-shadow:0 18px 40px -18px rgba(34,30,63,.6)}
.visual-chip{
  position:absolute;left:16px;bottom:-16px;
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;
  border-radius:999px;background:#fff;border:1px solid var(--line);box-shadow:var(--sh-md);
  font-size:13px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;
}
.visual-chip::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 3px rgba(47,175,155,.18)}

/* ===== 筛选胶囊 ===== */
.pill-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.pill{
  height:38px;padding:0 18px;border-radius:999px;background:#fff;border:1px solid var(--line);
  color:var(--ink-2);font-size:13.5px;font-weight:600;cursor:pointer;
  transition:background 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.pill:hover{border-color:var(--line-hover);color:var(--purple-deep);box-shadow:var(--sh-sm)}
.pill.is-active{background:var(--deep);border-color:var(--deep);color:#fff;box-shadow:var(--sh-md)}

/* ===== 通用板块 ===== */
.section{padding:72px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:34px}
.section-head h2{font-size:clamp(24px,2.4vw,31px)}
.section-head p{margin-top:12px;color:var(--ink-2);font-size:15.5px}

/* ===== 版本时间线 ===== */
.timeline{position:relative}
.tl-item{
  position:relative;display:grid;grid-template-columns:140px 28px minmax(0,1fr);
  column-gap:20px;padding-bottom:28px;
}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:174px;top:16px;bottom:-6px;width:1px;background:var(--line);
}
.tl-item:last-child::before{display:none}
.tl-when{display:flex;flex-direction:column;gap:6px;padding-top:14px;text-align:right}
.tl-date{font-size:14px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:.2px}
.tl-kind{font-size:12px;color:var(--ink-3)}
.tl-dot{
  grid-column:2;justify-self:center;width:14px;height:14px;margin-top:20px;border-radius:50%;
  background:#fff;border:3px solid var(--purple);box-shadow:0 0 0 4px var(--bg);z-index:1;
}
.tl-item[data-type="web"] .tl-dot{border-color:var(--orange)}
.tl-item[data-type="security"] .tl-dot{border-color:var(--teal)}
.tl-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:24px;box-shadow:var(--sh-sm);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:var(--line-hover)}
.tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tl-head h3{font-size:20px}
.tl-sub{margin-top:8px;font-size:14.5px;color:var(--ink-2)}
.tl-list{margin-top:16px;display:grid;gap:6px}
.tl-list li{position:relative;padding-left:20px;font-size:15px;line-height:1.9;color:var(--ink-2)}
.tl-list li::before{
  content:"";position:absolute;left:4px;top:.86em;width:6px;height:6px;border-radius:50%;
  background:var(--purple-soft);
}
.tl-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.tl-foot .meta{font-size:12.5px;color:var(--ink-3);font-variant-numeric:tabular-nums}

/* ===== 更新策略图文 ===== */
.policy{display:grid;grid-template-columns:.92fr 1.08fr;gap:44px;align-items:center}
.policy-media{border-radius:var(--r-2xl);overflow:hidden;box-shadow:var(--sh-lg);border:1px solid var(--line)}
.policy-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.policy-list{display:grid;gap:16px;margin-top:24px}
.policy-item{display:grid;grid-template-columns:40px 1fr;gap:14px;align-items:start}
.policy-num{
  width:40px;height:40px;border-radius:12px;background:var(--lav);display:grid;place-items:center;
  color:var(--purple-deep);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
}
.policy-item h3{font-size:17px}
.policy-item p{font-size:14.5px;color:var(--ink-2);margin-top:4px}

/* ===== 提示条 ===== */
.callout{
  display:grid;grid-template-columns:36px 1fr;gap:14px;align-items:start;
  padding:20px 22px;border-radius:var(--r-lg);background:var(--orange-bg);
  border:1px solid #FFDFC8;
}
.callout .ico{
  width:36px;height:36px;border-radius:12px;background:#fff;display:grid;place-items:center;
  color:#D9642A;font-weight:700;
}
.callout h4{font-size:15px;color:#B85218}
.callout p{font-size:14px;line-height:1.85;color:#8A4A20;margin-top:2px}

/* ===== CTA ===== */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-2xl);padding:44px;
  background-color:var(--deep);
  background-image:
    radial-gradient(circle,rgba(255,255,255,.16) 1px,transparent 1px),
    linear-gradient(135deg,#4B33C4 0%,#6C4CE0 52%,#A07BFF 100%);
  background-size:26px 26px,cover;
  box-shadow:var(--sh-lg);
  display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.3vw,30px)}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;margin-top:12px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.cta-actions .btn-ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.32);color:#fff;box-shadow:none}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff;border-color:rgba(255,255,255,.5)}
.cta-note{grid-column:1/-1;font-size:12px;color:rgba(255,255,255,.55);margin-top:4px}

/* ===== FAQ ===== */
.faq-wrap{display:grid;grid-template-columns:340px 1fr;gap:48px;align-items:start}
.faq-side h2{font-size:clamp(24px,2.4vw,31px)}
.faq-side p{margin-top:12px;color:var(--ink-2);font-size:15px}
.faq-list{display:grid;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-sm);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.faq-item:hover{border-color:var(--line-hover);box-shadow:var(--sh-md)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:16px 22px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:22px;text-align:center;font-size:20px;font-weight:400;
  color:var(--purple);transition:transform 180ms var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item[open]{border-color:var(--line-hover)}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--ink-2)}

/* ===== 分页视觉位 ===== */
.pager{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:36px}
.pager-btn,.pager-num{
  display:inline-flex;align-items:center;justify-content:center;height:40px;min-width:40px;padding:0 14px;
  border-radius:12px;background:#fff;border:1px solid var(--line);font-size:14px;color:var(--ink-2);
  font-variant-numeric:tabular-nums;transition:border-color 180ms var(--ease),color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.pager-btn:hover,.pager-num:hover{border-color:var(--line-hover);color:var(--purple-deep);box-shadow:var(--sh-sm)}
.pager-num.is-active{background:var(--deep);border-color:var(--deep);color:#fff}
.pager-btn.is-disabled{opacity:.42;pointer-events:none}

/* ===== 页脚 ===== */
.footer{
  margin-top:72px;padding:64px 0 28px;color:rgba(255,255,255,.72);
  background-color:var(--deep);
  background-image:radial-gradient(circle,rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:28px 28px;
}
.footer .brand-text{color:#fff}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.footer h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);margin-top:16px;max-width:340px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.7)}
.footer-links a:hover{color:#fff}
.footer-contact{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ===== 返回顶部 ===== */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:14px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-md);color:var(--purple-deep);
  display:grid;place-items:center;cursor:pointer;opacity:0;visibility:hidden;z-index:70;
  transition:opacity 200ms var(--ease),transform 200ms var(--ease),visibility 200ms var(--ease);
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-2px);border-color:var(--line-hover)}

/* ===== 断点：1024-1199 ===== */
@media (min-width:1024px) and (max-width:1199px){
  :root{--sidebar-w:208px}
  .hero-inner{gap:36px}
  .container{padding:0 28px}
}

/* ===== 断点：≤1023 顶部导航 + 抽屉 ===== */
@media (max-width:1023px){
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:58px;padding:0 16px;z-index:80;
    background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);box-shadow:var(--sh-sm);
  }
  .mobile-bar .brand{color:var(--ink)}
  .mobile-bar .brand-mark{width:28px;height:28px;border-radius:9px}
  .mobile-bar .brand-mark svg{width:16px;height:16px}
  .mobile-bar .brand-text{font-size:14px;max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .burger{
    width:44px;height:44px;border-radius:12px;background:#fff;border:1px solid var(--line);
    display:grid;place-items:center;cursor:pointer;
  }
  .burger span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
  .burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink)}
  .burger span::before{top:-6px}
  .burger span::after{top:6px}

  .sidebar{
    width:280px;padding:0 16px 24px;
    transform:translateX(106%);transition:transform 280ms var(--ease);
  }
  .sidebar.open{transform:translateX(0);box-shadow:-24px 0 60px -20px rgba(34,30,63,.55)}
  .sidebar .brand{height:76px}
  .side-nav .nav-item{height:52px;font-size:16px}
  .scrim{
    display:block;position:fixed;inset:0;z-index:55;
    background:rgba(34,30,63,.5);opacity:0;visibility:hidden;
    transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
  }
  .scrim.show{opacity:1;visibility:visible}

  .main-wrap{margin-left:0;padding-top:58px}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding-bottom:52px}
  .hero-visual{max-width:520px}
  .visual-frame{transform:none}
  .visual-chip{bottom:-14px}
  .policy{grid-template-columns:1fr;gap:28px}
  .policy-media img{aspect-ratio:16/9}
  .cta-band{grid-template-columns:1fr;padding:34px}
  .cta-actions{justify-content:flex-start}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .tl-item{grid-template-columns:112px 24px minmax(0,1fr);column-gap:16px}
  .tl-item::before{left:135px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}

/* ===== 断点：≤767 ===== */
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:52px 0}
  .hero-inner{padding-top:20px;padding-bottom:44px}
  .hero h1{font-size:clamp(28px,7vw,34px)}
  .lede{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .hero-meta{font-size:12.5px}
  .tl-item{display:block;padding-left:26px;padding-bottom:22px}
  .tl-item::before{left:6px;top:18px;bottom:-4px}
  .tl-dot{position:absolute;left:0;top:6px;margin:0;box-shadow:0 0 0 3px var(--bg)}
  .tl-when{flex-direction:row;align-items:center;gap:10px;text-align:left;padding-top:0;margin-bottom:10px}
  .tl-card{padding:20px}
  .tl-head h3{font-size:18px}
  .tl-foot{gap:12px}
  .cta-band{padding:26px;border-radius:var(--r-xl)}
  .cta-band h2{font-size:22px}
  .footer{padding:52px 0 24px;margin-top:52px}
  .footer-bottom{flex-direction:column;gap:8px}
  .to-top{right:16px;bottom:16px}
  .faq-item summary{font-size:15px;padding:14px 18px}
  .faq-body{padding:0 18px 18px;font-size:14.5px}
}

/* ===== 断点：≤520 ===== */
@media (max-width:520px){
  .mobile-bar .brand-text{max-width:150px}
  .hero{padding-bottom:0}
  .eyebrow{font-size:12px}
  .pill-bar{gap:8px}
  .pill{height:36px;padding:0 14px;font-size:13px}
  .btn{height:48px;padding:0 18px;font-size:14.5px}
  .tl-list li{font-size:14.5px}
  .footer-grid{grid-template-columns:1fr}
  .footer-desc{max-width:none}
  .pager{gap:6px}
  .pager-btn,.pager-num{height:38px;padding:0 12px;font-size:13px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:1ms !important;animation-duration:1ms !important}
  .tl-card:hover,.btn:hover,.to-top:hover,.visual-frame{transform:none !important}
}