/* roulang page: index */
:root{
  --primary:#5B2BD9;
  --primary-deep:#4A21B8;
  --mint:#16C79A;
  --orange:#FF6B3D;
  --ink:#14131A;
  --bg:#F7F6F3;
  --card:#FFFFFF;
  --border:#E8E5DF;
  --line:#EDEAE4;
  --t1:#1A1820;
  --t2:#5A5763;
  --t3:#8B8794;
  --on-dark:#F4F2EF;
  --on-dark-2:#A9A5B2;
  --r-xl:28px;
  --r-md:18px;
  --r-sm:14px;
  --r-btn:12px;
  --sh-sm:0 1px 2px rgba(20,19,26,.06);
  --sh-md:0 8px 24px -8px rgba(20,19,26,.12);
  --sh-lg:0 24px 48px -16px rgba(91,43,217,.18);
  --sbw:248px;
  --ease:200ms ease-out;
  --mono:"Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit;color:inherit}
button{background:none;border:0}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}
.sec{padding:80px 0}
.sec-tight{padding:56px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;margin:0;position:relative;padding-left:16px}
.h2::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:3px;background:var(--primary)}
.h3{font-size:19px;font-weight:600;line-height:1.45;margin:0}
.lead{color:var(--t2);font-size:16px;margin:12px 0 0;max-width:720px}
.link-more{color:var(--primary);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:gap var(--ease),color var(--ease)}
.link-more:hover{gap:10px;color:var(--orange)}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* ============ App Shell ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sbw);
  background:var(--ink);color:var(--on-dark);
  display:flex;flex-direction:column;
  padding:24px 16px 20px;z-index:70;
  overflow-y:auto;
}
.sb-logo{display:flex;align-items:center;gap:10px}
.sb-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:linear-gradient(135deg,var(--primary),#8B5CF6);
  color:#fff;font-weight:800;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px -10px rgba(91,43,217,.9);
}
.sb-name{font-size:15px;font-weight:700;letter-spacing:.01em;line-height:1.3;color:#fff}
.sb-note{margin:12px 0 0;font-size:12px;color:var(--on-dark-2);letter-spacing:.02em}
.sb-nav{display:flex;flex-direction:column;gap:6px;margin-top:28px}
.sb-link{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:10px;
  color:var(--on-dark-2);font-size:15px;
  transition:background var(--ease),color var(--ease);
}
.sb-link i{width:18px;font-size:15px;text-align:center;flex:0 0 18px}
.sb-link:hover{background:rgba(255,255,255,.06);color:var(--on-dark)}
.sb-link:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.sb-link.active{background:rgba(91,43,217,.32);color:#fff;font-weight:600}
.sb-link.active::before{
  content:"";position:absolute;left:-1px;top:9px;bottom:9px;width:3px;
  border-radius:2px;background:var(--primary);
}
.sb-foot{margin-top:auto;padding-top:24px}
.sb-download{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:46px;border-radius:12px;background:var(--orange);color:#fff;
  font-size:14px;font-weight:600;
  transition:filter var(--ease),transform var(--ease);
}
.sb-download:hover{filter:brightness(1.08);transform:translateY(-2px)}
.sb-ver{margin-top:12px;font-size:12px;color:var(--on-dark-2);display:flex;align-items:center;gap:8px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--mint);display:inline-block;box-shadow:0 0 0 3px rgba(22,199,154,.18)}

.main{margin-left:var(--sbw);min-height:100vh;display:flex;flex-direction:column}

/* ============ Mobile topbar & drawer ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:80;
  background:#fff;border-bottom:1px solid var(--border);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.tb-logo{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:700;color:var(--t1)}
.tb-logo .sb-mark{width:30px;height:30px;flex:0 0 30px;border-radius:9px;font-size:13px}
.tb-burger{width:44px;height:44px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;border-radius:10px}
.tb-burger span{width:20px;height:2px;border-radius:2px;background:var(--t1);transition:transform var(--ease),opacity var(--ease)}
.tb-burger:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.5);opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:85}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;background:var(--ink);color:var(--on-dark);
  padding:24px 16px 20px;transform:translateX(-100%);transition:transform 260ms ease-out;z-index:90;
  display:flex;flex-direction:column;overflow-y:auto;
}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
.drawer .sb-nav{margin-top:24px}

/* ============ Hero ============ */
.hero{position:relative;border-radius:var(--r-xl);overflow:hidden;background:var(--ink);color:#fff;box-shadow:var(--sh-lg)}
.hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(118deg,rgba(91,43,217,.88) 0%,rgba(58,30,140,.82) 44%,rgba(20,19,26,.84) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:44px 44px;
}
.hero-inner{position:relative;display:grid;grid-template-columns:52fr 48fr;gap:40px;align-items:center;padding:56px 48px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.08em;color:#fff;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);
  padding:6px 14px;border-radius:999px;
}
.hero-title{
  font-size:clamp(30px,4.4vw,48px);font-weight:800;line-height:1.22;
  letter-spacing:-.01em;margin:18px 0 16px;color:#fff;
}
.hero-sub{font-size:16.5px;color:rgba(244,242,239,.86);margin:0 0 28px;max-width:520px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-meta{margin-top:22px;font-family:var(--mono);font-size:12.5px;color:rgba(244,242,239,.72);display:flex;flex-wrap:wrap;gap:8px 18px}
.hero-visual{position:relative}
.device-frame{
  border-radius:var(--r-md);overflow:hidden;background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.2);box-shadow:0 30px 60px -24px rgba(0,0,0,.7);
}
.device-frame img{width:100%;aspect-ratio:16/10;object-fit:cover}
.float-tag{
  position:absolute;right:-10px;bottom:22px;
  background:#fff;color:var(--t1);border-radius:12px;padding:10px 14px;
  box-shadow:var(--sh-md);font-size:12.5px;font-weight:600;display:flex;align-items:center;gap:8px;
}
.float-tag .num{color:var(--primary);font-weight:700}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1.5px solid transparent;
  transition:transform var(--ease),background var(--ease),border-color var(--ease),box-shadow var(--ease),color var(--ease),filter var(--ease);
  min-height:48px;
}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-2px);box-shadow:0 14px 28px -14px rgba(91,43,217,.75)}
.btn-primary:active{transform:translateY(0)}
.btn-download{background:var(--orange);color:#fff}
.btn-download:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 14px 28px -14px rgba(255,107,61,.85)}
.btn-download:active{transform:translateY(0)}
.btn-download .btn-ver{font-family:var(--mono);font-size:11.5px;opacity:.85}
.btn-outline{background:#fff;border-color:#E0DCD4;color:var(--t1)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:rgba(255,255,255,.94);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1.5px}
.btn-ghost:hover{text-decoration-color:var(--mint);color:#fff}
.btn-ghost-dark{background:transparent;color:var(--t1);text-decoration:underline;text-underline-offset:4px}
.btn-ghost-dark:hover{text-decoration-color:var(--primary);color:var(--primary)}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}
.btn-block{width:100%}

/* ============ Stat bar ============ */
.statbar{
  display:grid;grid-template-columns:repeat(5,1fr);
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);
  box-shadow:var(--sh-sm);overflow:hidden;margin-top:-32px;position:relative;z-index:5;
}
.stat{padding:22px 18px;text-align:center;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat-num{font-family:var(--mono);font-size:24px;font-weight:700;color:var(--t1);line-height:1.2}
.stat-num em{font-style:normal;color:var(--mint);font-size:14px;margin-left:2px}
.stat-label{font-size:12.5px;color:var(--t3);margin-top:6px}

/* ============ Bento ============ */
.bento{display:grid;grid-template-columns:1.15fr 1fr 1fr;grid-auto-rows:minmax(150px,auto);gap:22px}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);
  box-shadow:var(--sh-sm);position:relative;overflow:hidden;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:rgba(91,43,217,.3)}
.bento-a{grid-column:1;grid-row:1/span 2;padding:30px 28px;display:flex;flex-direction:column;justify-content:space-between}
.bento-b{grid-column:2;grid-row:1;padding:26px 24px}
.bento-c{grid-column:3;grid-row:1;padding:26px 24px}
.bento-d{grid-column:2/span 2;grid-row:2;padding:24px;display:flex;align-items:center;gap:22px}
.bento-icon{width:46px;height:46px;border-radius:13px;background:rgba(91,43,217,.1);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:19px}
.bento-icon.mint{background:rgba(22,199,154,.12);color:#0E9C79}
.bento-icon.orange{background:rgba(255,107,61,.12);color:#E2512A}
.bento p{color:var(--t2);font-size:14.5px;margin:10px 0 0;line-height:1.75}
.bento-figure{margin-top:22px;border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line)}
.bento-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ============ Rail / carousel ============ */
.rail-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}
.rail-ctrl{display:flex;align-items:center;gap:14px}
.rail-dots{display:flex;gap:7px}
.rail-dot{width:8px;height:8px;border-radius:50%;background:#D8D3CA;cursor:pointer;transition:background var(--ease),transform var(--ease)}
.rail-dot.on{background:var(--mint);transform:scale(1.25)}
.rail-arrow{
  width:40px;height:40px;border-radius:50%;border:1.5px solid #E0DCD4;background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--t2);cursor:pointer;
  transition:border-color var(--ease),color var(--ease),transform var(--ease);
}
.rail-arrow:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 4px 20px;scrollbar-width:thin}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:#DCD8D0;border-radius:999px}
.rail-card{flex:0 0 46%;scroll-snap-align:start;border-radius:var(--r-md);overflow:hidden;background:var(--card);border:1px solid var(--border);box-shadow:var(--sh-sm);transition:transform var(--ease),box-shadow var(--ease)}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md)}
.rail-media{position:relative;overflow:hidden}
.rail-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 400ms ease-out}
.rail-card:hover .rail-media img{transform:scale(1.04)}
.rail-veil{position:absolute;inset:0;background:rgba(20,19,26,.55);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;opacity:0;transition:opacity var(--ease)}
.rail-card:hover .rail-veil{opacity:1}
.rail-body{padding:18px 20px 22px}
.rail-body .h3{font-size:17px}
.rail-body p{color:var(--t2);font-size:14px;margin:8px 0 0}

/* ============ Specs ============ */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.spec-card{padding:28px 26px}
.spec-card h3{font-size:18px;font-weight:700;margin:0 0 8px;padding-left:14px;position:relative}
.spec-card h3::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:4px;border-radius:3px;background:var(--primary)}
.spec-card.mintset h3::before{background:var(--mint)}
.spec-row{display:flex;align-items:baseline;justify-content:space-between;gap:18px;padding:13px 0;border-bottom:1px dashed var(--line)}
.spec-row:last-child{border-bottom:0;padding-bottom:0}
.spec-key{color:var(--t2);font-size:14.5px}
.spec-val{font-family:var(--mono);font-size:13.5px;color:var(--t1);text-align:right}

/* ============ Reviews ============ */
.review-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.review{padding:26px 24px}
.review:nth-child(even){margin-top:38px}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:44px;height:44px;border-radius:50%;overflow:hidden;flex:0 0 44px;border:1px solid var(--line)}
.avatar img{width:100%;height:100%;object-fit:cover}
.review-name{font-size:15px;font-weight:600}
.review-role{font-size:12.5px;color:var(--t3)}
.review p{color:var(--t2);font-size:14.5px;margin:0;line-height:1.8}
.review-foot{margin-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--t3)}
.stars{color:var(--orange);letter-spacing:2px;font-size:12.5px}

/* ============ News / CMS ============ */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:rgba(91,43,217,.1);color:var(--primary);font-size:12px;font-weight:600;letter-spacing:.01em;
}
.news-lead{display:grid;grid-template-columns:44fr 56fr;overflow:hidden;margin-bottom:24px}
.news-lead-media img{width:100%;height:100%;min-height:250px;object-fit:cover}
.news-lead-body{padding:30px 32px;display:flex;flex-direction:column;justify-content:center;gap:12px}
.news-lead-title{font-size:22px;font-weight:700;line-height:1.5;margin:0;transition:color var(--ease)}
.news-lead:hover .news-lead-title{color:var(--primary)}
.news-lead-desc{color:var(--t2);font-size:15px;margin:0;line-height:1.8}
.news-time{font-family:var(--mono);font-size:12.5px;color:var(--t3)}
.news-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.news-card{padding:22px 22px 20px;display:flex;flex-direction:column;gap:10px}
.news-card .h3{font-size:17px;transition:color var(--ease)}
.news-card:hover .h3{color:var(--primary)}
.news-card p{color:var(--t2);font-size:14px;margin:0;line-height:1.75}
.news-card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:4px}
.card-arrow{color:var(--t3);font-size:13px;transition:color var(--ease),transform var(--ease)}
.news-card:hover .card-arrow{color:var(--primary);transform:translate(3px,-3px)}
.news-empty{
  border:1px dashed var(--border);border-radius:var(--r-md);background:rgba(91,43,217,.05);
  padding:56px 24px;text-align:center;color:var(--t2);
}
.news-empty i{font-size:26px;color:var(--primary);opacity:.65}
.news-empty p{margin:14px 0 18px;font-size:14.5px}

/* ============ FAQ ============ */
.faq-list{max-width:840px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);box-shadow:var(--sh-sm);padding:8px 24px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:14px 0;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:600;color:var(--t1);transition:color var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-q:focus-visible{outline:2px solid var(--primary);outline-offset:4px;border-radius:8px}
.faq-icon{color:var(--primary);font-size:15px;transition:transform var(--ease);flex:0 0 auto}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 300ms ease-out}
.faq-a-inner{padding:2px 18px 20px;background:rgba(91,43,217,.04);border-radius:12px;color:var(--t2);font-size:15px;line-height:1.8;margin-bottom:14px}

/* ============ Download CTA ============ */
.cta-band{position:relative;border-radius:var(--r-xl);overflow:hidden;background:var(--ink);color:#fff}
.cta-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(110deg,rgba(20,19,26,.94) 0%,rgba(91,43,217,.78) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;padding:48px}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;margin:0 0 10px;color:#fff}
.cta-inner p{color:rgba(244,242,239,.82);font-size:15px;margin:0;max-width:520px}
.platform-group{display:flex;gap:12px;flex-wrap:wrap}
.plat-btn{
  display:flex;align-items:center;gap:10px;height:56px;padding:0 18px;border-radius:12px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);color:#fff;
  transition:background var(--ease),transform var(--ease),border-color var(--ease);min-width:130px;
}
.plat-btn:hover{background:rgba(255,255,255,.18);transform:translateY(-3px);border-color:rgba(255,255,255,.4)}
.plat-btn i{font-size:18px;opacity:.9}
.plat-name{font-size:14px;font-weight:600;line-height:1.2}
.plat-ver{font-family:var(--mono);font-size:11px;color:rgba(244,242,239,.65);line-height:1.4}
.cta-note{position:relative;padding:0 48px 40px;font-family:var(--mono);font-size:12px;color:rgba(244,242,239,.6)}

/* ============ Category entries ============ */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cat-card{padding:26px 24px;display:flex;flex-direction:column;gap:12px}
.cat-card .bento-icon{margin-bottom:4px}
.cat-card p{color:var(--t2);font-size:14px;margin:0;line-height:1.75}
.cat-list{margin:6px 0 0;padding:0;list-style:none}
.cat-list li{font-size:13.5px;color:var(--t2);padding:4px 0 4px 16px;position:relative}
.cat-list li::before{content:"";position:absolute;left:0;top:13px;width:6px;height:6px;border-radius:50%;background:var(--mint)}

/* ============ Footer ============ */
.footer{background:var(--ink);color:var(--on-dark-2);margin-top:80px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding:64px 0 44px}
.footer h4{font-size:14px;font-weight:600;color:rgba(244,242,239,.6);margin:0 0 16px;letter-spacing:.04em}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand span{color:#fff;font-size:15px;font-weight:700}
.footer p{font-size:13.5px;line-height:1.85;margin:0}
.footer-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--on-dark-2);transition:color var(--ease),padding-left var(--ease)}
.footer-links a:hover{color:#fff;padding-left:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0 32px;display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;font-size:12.5px}
.footer-bottom .num{color:rgba(244,242,239,.55)}
.to-top{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;border-radius:10px;
  border:1px solid rgba(255,255,255,.2);color:var(--on-dark);font-size:13px;
  transition:border-color var(--ease),background var(--ease),transform var(--ease);
}
.to-top:hover{border-color:var(--primary);background:rgba(91,43,217,.25);transform:translateY(-2px)}

/* ============ Responsive ============ */
@media (max-width:1279px){
  :root{--sbw:84px}
  .sb-name,.sb-note,.sb-link span,.sb-download span{display:none}
  .sidebar{padding:20px 14px;align-items:center}
  .sb-logo{justify-content:center}
  .sb-nav{width:100%;align-items:center}
  .sb-link{justify-content:center;width:48px;padding:0}
  .sb-link i{width:auto;font-size:17px}
  .sb-download{width:48px;height:48px;padding:0}
  .sb-ver{justify-content:center;font-size:10px}
  .sb-ver em{display:none}
}
@media (max-width:1023px){
  .sidebar{display:none}
  .topbar{display:flex}
  .main{margin-left:0;padding-top:56px}
  .hero-inner{grid-template-columns:1fr;gap:28px;padding:36px 28px}
  .hero-visual{order:-1}
  .statbar{grid-template-columns:repeat(2,1fr);margin-top:20px}
  .stat{border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
  .stat:nth-child(even){border-right:0}
  .stat:nth-last-child(-n+2){border-bottom:0}
  .bento{grid-template-columns:1fr 1fr}
  .bento-a{grid-column:1/span 2;grid-row:auto}
  .bento-b{grid-column:1;grid-row:auto}
  .bento-c{grid-column:2;grid-row:auto}
  .bento-d{grid-column:1/span 2;grid-row:auto}
  .rail-card{flex:0 0 64%}
  .spec-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .review:nth-child(even){margin-top:0}
  .news-lead{grid-template-columns:1fr}
  .news-lead-media img{min-height:190px;max-height:220px}
  .news-grid{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:1fr 1fr}
  .cta-inner{grid-template-columns:1fr;padding:36px 28px}
  .cta-note{padding:0 28px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;padding:48px 0 32px}
  .rail-arrow{display:none}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .sec{padding:56px 0}
  .sec-tight{padding:40px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:26px}
  .hero-inner{padding:28px 20px 32px;gap:22px}
  .hero-title{font-size:28px}
  .hero-actions .btn{width:100%}
  .float-tag{right:8px;bottom:10px;font-size:11.5px;padding:8px 11px}
  .stat{padding:18px 12px}
  .stat-num{font-size:20px}
  .bento{grid-template-columns:1fr;gap:16px}
  .bento-a,.bento-b,.bento-c,.bento-d{grid-column:1}
  .bento-d{flex-direction:column;align-items:flex-start}
  .rail-card{flex:0 0 88%}
  .cat-grid{grid-template-columns:1fr}
  .faq-list{padding:4px 16px}
  .faq-q{font-size:15.5px}
  .cta-inner{padding:28px 20px}
  .cta-note{padding:0 20px 26px}
  .platform-group{width:100%}
  .plat-btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .news-lead-body{padding:22px 20px}
  .spec-row{flex-direction:column;align-items:flex-start;gap:4px}
  .spec-val{text-align:left}
}

/* roulang page: article */
:root{
  --primary:#5B2BD9;
  --primary-d:#4A21B8;
  --primary-06:rgba(91,43,217,.06);
  --primary-08:rgba(91,43,217,.08);
  --primary-12:rgba(91,43,217,.12);
  --primary-30:rgba(91,43,217,.30);
  --mint:#16C79A;
  --orange:#FF6B3D;
  --orange-d:#F2561F;
  --ink:#14131A;
  --paper:#F7F6F3;
  --card:#FFFFFF;
  --line:#E8E5DF;
  --line-2:#E0DCD4;
  --line-soft:#EDEAE4;
  --t1:#1A1820;
  --t2:#5A5763;
  --t3:#8B8794;
  --on-ink:#F4F2EF;
  --on-ink-2:#A9A5B2;
  --r-lg:28px;
  --r-md:18px;
  --r-sm:14px;
  --r-btn:12px;
  --sh-sm:0 1px 2px rgba(20,19,26,.06);
  --sh-md:0 8px 24px -8px rgba(20,19,26,.12);
  --sh-lg:0 24px 48px -16px rgba(91,43,217,.18);
  --ease:200ms ease-out;
  --mono:"Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  background:var(--paper);
  color:var(--t1);
  font-size:16px;
  line-height:1.8;
  padding-left:248px;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;}
p{margin:0;}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px;}

/* ============ 左侧导航 ============ */
.sb{
  position:fixed;top:0;left:0;width:248px;height:100vh;background:var(--ink);
  display:flex;flex-direction:column;padding:26px 16px 20px;z-index:60;overflow-y:auto;
  scrollbar-width:thin;
}
.sb-top{padding:0 8px 22px;border-bottom:1px solid rgba(255,255,255,.08);}
.sb-logo{display:flex;align-items:center;gap:10px;}
.sb-mark{
  width:38px;height:38px;flex:none;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),#7C4DF0);
  color:#fff;font-weight:800;font-size:17px;display:grid;place-items:center;
  box-shadow:0 8px 18px -6px rgba(91,43,217,.7);
}
.sb-name{color:#fff;font-size:15.5px;font-weight:700;letter-spacing:.01em;line-height:1.35;}
.sb-sub{color:var(--on-ink-2);font-size:12px;margin-top:12px;letter-spacing:.02em;}
.sb-nav{display:flex;flex-direction:column;gap:6px;padding:22px 0;flex:1;}
.sb-link{
  display:flex;align-items:center;gap:12px;height:44px;padding:0 12px;border-radius:10px;
  color:var(--on-ink-2);font-size:15px;position:relative;
  transition:background-color var(--ease),color var(--ease);
}
.sb-link i{width:18px;font-size:16px;text-align:center;}
.sb-link:hover{background:rgba(255,255,255,.06);color:#fff;}
.sb-link.active{background:var(--primary-12);color:#fff;}
.sb-link.active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;background:var(--primary);
}
.sb-link:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.sb-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:16px;display:flex;flex-direction:column;gap:10px;}
.sb-dl{
  display:flex;align-items:center;justify-content:center;gap:8px;height:46px;border-radius:12px;
  background:var(--orange);color:#fff;font-size:15px;font-weight:600;
  transition:background-color var(--ease),transform var(--ease);
}
.sb-dl:hover{background:var(--orange-d);transform:translateY(-2px);}
.sb-status{display:flex;align-items:center;gap:8px;color:var(--on-ink-2);font-size:12px;padding-left:4px;}
.sb-status .dot{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 3px rgba(22,199,154,.18);}

/* ============ 移动端顶栏 / 抽屉 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;background:#fff;
  border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;
  padding:0 14px;z-index:70;
}
.topbar .brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;}
.topbar .sb-mark{width:32px;height:32px;border-radius:10px;font-size:15px;}
.hamb{
  width:44px;height:44px;border:1px solid var(--line-2);border-radius:12px;background:#fff;
  display:grid;place-items:center;color:var(--t1);font-size:16px;
}
.hamb:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:55;}
.mask.show{display:block;}

/* ============ 阅读进度 ============ */
.progress{position:fixed;top:0;left:248px;right:0;height:3px;background:transparent;z-index:65;}
.progress span{display:block;height:100%;width:0;background:var(--primary);transition:width 120ms linear;}

/* ============ 主内容 ============ */
.main{max-width:1280px;margin:0 auto;padding:36px 32px 88px;}

.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--t3);margin-bottom:26px;}
.crumbs a{color:var(--t2);transition:color var(--ease);}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{color:var(--line-2);}
.crumbs .current{color:var(--primary);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

.post-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:44px;align-items:start;}
@media (min-width:1280px){
  .post-layout{grid-template-columns:minmax(0,1fr) 250px;}
  .post-layout.no-toc{grid-template-columns:minmax(0,1fr);}
}

.post-head{margin-bottom:30px;}
.post-kicker{
  display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:999px;
  background:var(--primary-08);color:var(--primary);font-size:13px;font-weight:600;
}
.post-head h1{
  font-size:clamp(26px,3.4vw,42px);font-weight:800;line-height:1.28;letter-spacing:-.01em;
  margin:18px 0 18px;max-width:900px;word-break:break-word;
}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--t3);}
.meta .sep{color:var(--line-2);}
.meta .mono{font-family:var(--mono);letter-spacing:.02em;color:var(--t2);}
.meta .tag-soft{background:var(--primary-06);color:var(--primary);border-radius:999px;padding:3px 12px;font-weight:600;}

.article-shell{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:46px 52px 52px;box-shadow:var(--sh-sm);
}
.article-body{max-width:760px;font-size:17px;line-height:1.85;color:var(--t1);}
.article-body > * + *{margin-top:1.4em;}
.article-body p{margin:0;color:#2A2833;}
.article-body h2{
  font-size:26px;font-weight:700;line-height:1.4;margin:44px 0 16px;padding-left:14px;
  border-left:4px solid var(--primary);color:var(--t1);
}
.article-body h3{font-size:20px;font-weight:600;margin:32px 0 12px;color:var(--t1);}
.article-body strong{color:var(--primary);font-weight:700;}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;transition:color var(--ease);}
.article-body a:hover{color:var(--orange);}
.article-body ul,.article-body ol{margin:18px 0;padding-left:0;}
.article-body ul li,.article-body ol li{position:relative;padding-left:24px;line-height:1.8;margin-bottom:10px;color:#2A2833;}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--primary);transform:rotate(45deg);
}
.article-body ol{counter-reset:item;}
.article-body ol li::before{
  counter-increment:item;content:counter(item);
  position:absolute;left:0;top:.18em;width:18px;height:18px;border-radius:6px;
  background:var(--primary-08);color:var(--primary);font-size:11px;font-weight:700;
  display:grid;place-items:center;font-family:var(--mono);
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--primary-06);
  border-left:3px solid var(--primary);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--t2);font-style:normal;
}
.article-body img{border-radius:var(--r-sm);margin:26px auto;box-shadow:var(--sh-sm);}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--t3);text-align:center;margin-top:10px;}
.article-body code{
  font-family:var(--mono);font-size:14px;background:var(--primary-06);color:var(--primary);
  padding:2px 7px;border-radius:6px;
}
.article-body pre{
  background:var(--ink);color:var(--on-ink);border-radius:var(--r-btn);padding:20px 22px;
  overflow-x:auto;font-family:var(--mono);font-size:14px;line-height:1.7;
}
.article-body pre code{background:transparent;color:inherit;padding:0;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;}
.article-body th{background:var(--primary-06);color:var(--t1);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line-soft);margin:34px 0;}

.empty-state{
  text-align:center;padding:64px 24px;border-radius:var(--r-md);
  background:var(--primary-08);
  background-image:repeating-linear-gradient(135deg,rgba(91,43,217,.06) 0 8px,transparent 8px 16px);
}
.empty-state i{font-size:34px;color:var(--primary);opacity:.7;}
.empty-state p{font-size:17px;font-weight:600;color:var(--t1);margin:16px 0 20px;}

/* 目录 */
.toc{display:none;position:sticky;top:88px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);padding:18px 14px;box-shadow:var(--sh-sm);}
.toc h3{font-size:13px;color:var(--t3);font-weight:600;letter-spacing:.08em;padding:0 10px 10px;}
.toc a{display:block;font-size:13px;color:var(--t2);padding:8px 10px;border-radius:8px;line-height:1.5;transition:background-color var(--ease),color var(--ease);}
.toc a:hover{background:var(--primary-08);color:var(--primary);}

/* 标签 */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line-soft);}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:999px;
  border:1px solid var(--line-2);font-size:14px;color:var(--t2);
  transition:color var(--ease),border-color var(--ease),background-color var(--ease),transform var(--ease);
}
.tag:hover{color:var(--primary);border-color:var(--primary-30);background:var(--primary-06);transform:translateY(-2px);}

/* 上下篇 */
.pager{display:grid;grid-template-columns:1fr;gap:16px;margin-top:28px;}
@media (min-width:768px){.pager{grid-template-columns:1fr 1fr;}}
.pager a{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 22px;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.pager a:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--primary-30);}
.pager .p-label{font-size:12px;color:var(--t3);letter-spacing:.06em;display:flex;align-items:center;gap:6px;}
.pager .p-title{font-size:16px;font-weight:600;color:var(--t1);margin-top:8px;line-height:1.5;}
.pager .p-next{text-align:right;}
.pager .p-next .p-label{justify-content:flex-end;}

/* 相关推荐 */
.rec{margin-top:56px;}
.rec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;}
.rec-head h2{font-size:24px;padding-left:14px;border-left:4px solid var(--primary);}
.rec-head a{font-size:14px;color:var(--primary);display:inline-flex;align-items:center;gap:6px;}
.rec-grid{display:grid;grid-template-columns:1fr;gap:22px;}
@media (min-width:768px){.rec-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1280px){.rec-grid{grid-template-columns:repeat(3,1fr);}}
.card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;position:relative;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--primary-30);}
.card-cover{aspect-ratio:16/9;overflow:hidden;background:var(--primary-08);}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease-out;}
.card:hover .card-cover img{transform:scale(1.04);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-badge{
  align-self:flex-start;font-size:12px;font-weight:600;color:var(--primary);
  background:var(--primary-08);border-radius:999px;padding:3px 11px;
}
.card h3{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card p{
  font-size:14px;color:var(--t2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--t3);padding-top:6px;}
.card .card-foot .num{color:var(--t2);}
.card .card-arrow{color:var(--primary);opacity:0;transform:translateX(-4px);transition:opacity var(--ease),transform var(--ease);}
.card:hover .card-arrow{opacity:1;transform:translateX(0);}

/* 文末返回 */
.back-block{
  margin-top:56px;border-radius:var(--r-lg);padding:40px 44px;color:var(--on-ink);
  background-color:var(--ink);
  background-image:linear-gradient(120deg,rgba(91,43,217,.85),rgba(20,19,26,.92)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
}
.back-block h2{font-size:24px;color:#fff;}
.back-block p{color:var(--on-ink-2);font-size:15px;margin-top:8px;max-width:560px;}
.back-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 22px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),border-color var(--ease),color var(--ease);
}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-md);}
.btn-primary:hover{background:var(--primary-d);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:#fff;color:var(--t1);border-color:var(--line-2);}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn-dl{background:var(--orange);color:#fff;}
.btn-dl:hover{background:var(--orange-d);transform:translateY(-2px);}
.btn-dl .v{font-size:12px;font-family:var(--mono);opacity:.85;letter-spacing:.02em;}

/* ============ 页脚 ============ */
.footer{background:var(--ink);color:var(--on-ink);padding:72px 0 32px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;margin-bottom:16px;}
.footer p{color:var(--on-ink-2);font-size:14px;line-height:1.8;max-width:340px;}
.footer h4{font-size:14px;color:var(--on-ink-2);font-weight:600;margin-bottom:18px;letter-spacing:.04em;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:var(--on-ink);transition:color var(--ease);}
.footer-links a:hover{color:var(--mint);}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;align-items:center;gap:14px 24px;font-size:13px;color:var(--on-ink-2);
}
.footer-bottom .num{color:var(--on-ink-2);}
.to-top{margin-left:auto;color:var(--on-ink);display:inline-flex;align-items:center;gap:6px;transition:color var(--ease);}
.to-top:hover{color:var(--mint);}

/* ============ 响应式 ============ */
@media (min-width:1024px) and (max-width:1279px){
  body{padding-left:84px;}
  .sb{width:84px;padding:22px 12px 18px;align-items:center;}
  .sb-top{padding:0 0 18px;width:100%;text-align:center;}
  .sb-logo{justify-content:center;}
  .sb-name,.sb-sub,.sb-link span,.sb-dl span,.sb-status span{display:none;}
  .sb-nav{width:100%;align-items:center;}
  .sb-link{justify-content:center;padding:0;width:48px;}
  .sb-dl{width:48px;padding:0;}
  .sb-status{justify-content:center;padding-left:0;}
  .progress{left:84px;}
}
@media (max-width:1023px){
  body{padding-left:0;padding-top:56px;}
  .topbar{display:flex;}
  .sb{transform:translateX(-100%);transition:transform 260ms ease;width:280px;z-index:80;}
  .sb.open{transform:translateX(0);box-shadow:0 0 60px rgba(0,0,0,.5);}
  .mask{z-index:75;}
  .progress{left:0;top:56px;}
  .main{padding:24px 20px 64px;}
  .article-shell{padding:28px 22px 32px;border-radius:var(--r-md);}
  .article-body{font-size:16px;}
  .article-body h2{font-size:22px;margin:34px 0 14px;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
  .back-block{padding:30px 24px;border-radius:var(--r-md);}
  .footer{padding:52px 0 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .container{padding:0 20px;}
}
@media (max-width:639px){
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer p{max-width:none;}
  .rec-head{flex-direction:column;align-items:flex-start;}
  .btn{width:100%;}
  .back-actions{width:100%;}
  .to-top{margin-left:0;}
}

/* roulang page: category2 */
:root{
  --brand:#5B2BD9;
  --brand-600:#4A1FB8;
  --brand-soft:rgba(91,43,217,.10);
  --brand-line:rgba(91,43,217,.30);
  --mint:#16C79A;
  --orange:#FF6B3D;
  --night:#14131A;
  --paper:#F7F6F3;
  --card:#FFFFFF;
  --border:#E8E5DF;
  --line:#EDEAE4;
  --text:#1A1820;
  --text-2:#5A5763;
  --text-3:#8B8794;
  --r-xl:28px;
  --r-lg:18px;
  --r-md:14px;
  --r-btn:12px;
  --sh-sm:0 1px 2px rgba(20,19,26,.06);
  --sh-md:0 8px 24px -8px rgba(20,19,26,.12);
  --sh-lg:0 24px 48px -16px rgba(91,43,217,.18);
  --sidebar-w:248px;
  --gap:24px;
  --mono:ui-monospace,SFMono-Regular,"JetBrains Mono",Inter,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;border:0;background:none}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
p{margin:0}
.num{font-family:var(--mono);letter-spacing:.02em}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}

/* ============ 侧栏导航 ============ */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);
  background:var(--night);z-index:60;display:flex;flex-direction:column;
  padding:24px 18px;gap:26px;overflow-y:auto;
  transition:transform .3s ease;
}
.sb-brand{display:flex;align-items:center;gap:10px}
.sb-mark{
  width:36px;height:36px;flex:none;border-radius:11px;
  background:linear-gradient(135deg,var(--brand),#8A62F2);
  display:grid;place-items:center;color:#fff;font-weight:800;font-size:16px;
  box-shadow:0 8px 20px -8px rgba(91,43,217,.9);
}
.sb-brand-text{color:#F4F2EF;font-weight:700;font-size:15px;line-height:1.35}
.sb-brand-sub{display:block;color:#8B8794;font-size:11px;font-weight:400;letter-spacing:.02em;margin-top:2px}
.sb-nav{display:flex;flex-direction:column;gap:6px}
.sb-link{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:10px;
  color:#A9A5B2;font-size:15px;transition:background .2s ease,color .2s ease;
}
.sb-link i{width:18px;text-align:center;font-size:15px}
.sb-link:hover{background:rgba(255,255,255,.06);color:#F4F2EF}
.sb-link.active{background:rgba(91,43,217,.20);color:#FFFFFF;font-weight:600}
.sb-link.active::before{
  content:"";position:absolute;left:-14px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--brand);
}
.sb-link:focus-visible{outline:2px solid var(--mint);outline-offset:2px}
.sb-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}
.sb-download{width:100%;height:48px}
.sb-status{display:flex;align-items:center;gap:8px;color:#8B8794;font-size:12px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 3px rgba(22,199,154,.16)}

/* ============ 顶部栏（移动端） ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  background:#fff;border-bottom:1px solid var(--border);z-index:50;
  align-items:center;justify-content:space-between;padding:0 16px;
}
.topbar .sb-brand-text{color:var(--text);font-size:14px}
.topbar .sb-mark{width:32px;height:32px;border-radius:10px;font-size:14px}
.burger{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  color:var(--text);font-size:18px;transition:background .2s ease;
}
.burger:hover{background:var(--brand-soft)}
.overlay{
  display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:55;
}
.overlay.show{display:block}

/* ============ 主内容 ============ */
.main{margin-left:var(--sidebar-w);min-height:100vh;padding-top:24px;display:flex;flex-direction:column}

/* ============ 面包屑 ============ */
.crumb{display:flex;justify-content:center;gap:8px;font-size:13px;color:#A9A5B2;margin-bottom:18px;flex-wrap:wrap}
.crumb a{color:#CFC9E0;transition:color .2s}
.crumb a:hover{color:#fff}
.crumb .cur{color:#F4F2EF}

/* ============ Hero ============ */
.hero-outer{position:relative;overflow:hidden;background:var(--night)}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.40;
}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(91,43,217,.86) 0%,rgba(20,19,26,.94) 78%);
}
.hero-inner{position:relative;z-index:2;text-align:center;padding:56px 24px 84px}
.hero-tags{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-bottom:18px}
.tag-dark{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:999px;font-size:13px;
  color:#E9E4FF;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.16);
}
.hero-inner h1{
  color:#F4F2EF;font-size:clamp(28px,4vw,50px);font-weight:800;line-height:1.2;
  max-width:880px;margin:0 auto 18px;
}
.hero-lead{color:#C9C4D6;font-size:clamp(15px,1.6vw,17px);max-width:720px;margin:0 auto 28px;line-height:1.9}
.hero-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:24px}
.hero-meta{color:#8B8794;font-size:13px;font-family:var(--mono);letter-spacing:.03em}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  cursor:pointer;transition:transform .2s ease-out,background .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out,color .2s ease-out;
  white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:var(--sh-md)}
.btn-primary:active{transform:translateY(1px)}
.btn-download{background:var(--orange);color:#fff}
.btn-download:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 12px 28px -12px rgba(255,107,61,.8)}
.btn-download:active{transform:translateY(1px)}
.btn-outline-light{background:transparent;color:#F4F2EF;border-color:rgba(255,255,255,.34)}
.btn-outline-light:hover{background:rgba(255,255,255,.10);border-color:#fff;transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--text-2);border-color:#E0DCD4}
.btn-outline:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-sm)}
.btn-ghost{color:var(--brand);height:auto;padding:2px 0;border:0;text-decoration:underline;text-underline-offset:4px;transition:text-decoration-color .2s,color .2s}
.btn-ghost:hover{color:var(--orange);text-decoration-color:var(--orange)}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* ============ 速览数据条 ============ */
.stats-wrap{margin-top:-42px;position:relative;z-index:3}
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh-md);overflow:hidden;
}
.stat{padding:22px 24px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat .stat-num{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--brand);line-height:1.2}
.stat .stat-num em{font-style:normal;font-size:14px;color:var(--text-3);margin-left:4px}
.stat .stat-label{font-size:13px;color:var(--text-3);margin-top:6px}

/* ============ 板块通用 ============ */
.section{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px;flex-wrap:wrap}
.sec-title{
  font-size:clamp(23px,2.4vw,31px);font-weight:700;position:relative;padding-left:16px;line-height:1.35;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:1em;border-radius:2px;background:var(--brand);
}
.sec-desc{color:var(--text-2);font-size:15px;max-width:720px;margin-top:14px}

/* ============ 主体分栏 ============ */
.split{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:32px;align-items:start}
.col-list{display:flex;flex-direction:column;gap:18px}

/* ============ 横向图文行 ============ */
.row-card{
  display:grid;grid-template-columns:200px minmax(0,1fr);gap:22px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:18px;box-shadow:var(--sh-sm);
  transition:transform .2s ease-out,background .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.row-card:hover{transform:translateX(4px);background:rgba(91,43,217,.04);border-color:var(--brand-line);box-shadow:var(--sh-md)}
.row-thumb{border-radius:var(--r-md);overflow:hidden;background:var(--brand-soft);aspect-ratio:16/9;position:relative}
.row-thumb img{width:100%;height:100%;object-fit:cover}
.row-body{display:flex;flex-direction:column;gap:8px;min-width:0}
.row-title{font-size:19px;font-weight:600;line-height:1.5}
.row-title a:hover{color:var(--brand)}
.row-text{color:var(--text-2);font-size:15px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.row-foot{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:auto;font-size:13px;color:var(--text-3)}
.pill{
  display:inline-flex;align-items:center;padding:3px 11px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;
}
.pill-mint{background:rgba(22,199,154,.12);color:#0E9C78}
.pill-line{background:#fff;border:1px solid #E0DCD4;color:var(--text-2);font-weight:500}

/* ============ 侧栏 ============ */
.side{position:sticky;top:24px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);padding:20px;box-shadow:var(--sh-sm)}
.side-title{font-size:15px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-title i{color:var(--brand);font-size:13px}
.side-links{display:flex;flex-direction:column;gap:4px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 12px;border-radius:10px;font-size:14px;color:var(--text-2);
  transition:background .2s ease,color .2s ease;
}
.side-links a:hover{background:var(--brand-soft);color:var(--brand)}
.side-links a.current{background:var(--brand-soft);color:var(--brand);font-weight:600}
.hot-list{display:flex;flex-direction:column;gap:14px}
.hot-item{display:flex;gap:12px;align-items:flex-start}
.hot-index{
  width:24px;height:24px;flex:none;border-radius:8px;background:var(--paper);
  display:grid;place-items:center;font-family:var(--mono);font-size:12px;color:var(--brand);font-weight:700;
}
.hot-item a{font-size:14px;line-height:1.65;color:var(--text-2);transition:color .2s}
.hot-item a:hover{color:var(--brand)}
.side-cta{background:var(--night);border-radius:var(--r-lg);padding:22px;color:#F4F2EF;position:relative;overflow:hidden}
.side-cta::after{
  content:"";position:absolute;right:-40px;top:-40px;width:120px;height:120px;border-radius:50%;
  background:radial-gradient(circle,rgba(91,43,217,.7),transparent 70%);
}
.side-cta h3{font-size:17px;font-weight:700;margin-bottom:8px;position:relative;z-index:1}
.side-cta p{font-size:13px;color:#A9A5B2;margin-bottom:16px;position:relative;z-index:1;line-height:1.7}
.side-cta .btn{width:100%;position:relative;z-index:1}

/* ============ 流程时间线 ============ */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow-step{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:24px 20px;position:relative;transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.flow-step:hover{transform:translateY(-4px);border-color:var(--brand-line);box-shadow:var(--sh-md)}
.flow-step .step-num{
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--brand);
  letter-spacing:.06em;display:block;margin-bottom:12px;
}
.flow-step h3{font-size:17px;font-weight:600;margin-bottom:8px}
.flow-step p{font-size:14px;color:var(--text-2);line-height:1.75}
.flow-line{height:4px;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--mint));margin-bottom:26px;max-width:320px}

/* ============ 提示条 ============ */
.notice{
  display:flex;gap:14px;align-items:flex-start;
  background:rgba(91,43,217,.06);border-left:3px solid var(--brand);
  border-radius:10px;padding:16px 20px;margin-top:18px;
}
.notice i{color:var(--brand);margin-top:4px}
.notice p{font-size:14px;color:var(--text-2);line-height:1.8}

/* ============ FAQ ============ */
.faq-wrap{max-width:840px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item:hover{border-color:var(--brand-line)}
.faq-item.open{border-color:var(--brand-line);box-shadow:var(--sh-sm)}
.faq-q{
  width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--text);cursor:pointer;
}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:-2px}
.faq-q i{color:var(--brand);font-size:15px;transition:transform .2s ease-out;flex:none}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease-out;background:rgba(91,43,217,.04)}
.faq-a p{padding:14px 20px 18px;font-size:15px;color:var(--text-2);line-height:1.85}

/* ============ 收口 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--night);border-radius:var(--r-xl);
  padding:44px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band .cta-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;opacity:.20;
}
.cta-band .cta-veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(91,43,217,.72),rgba(20,19,26,.92))}
.cta-left{position:relative;z-index:2;max-width:560px}
.cta-left h2{color:#F4F2EF;font-size:clamp(22px,2.6vw,30px);font-weight:700;margin-bottom:10px}
.cta-left p{color:#A9A5B2;font-size:15px;line-height:1.8}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap}
.cta-note{position:relative;z-index:2;width:100%;color:#8B8794;font-size:13px;font-family:var(--mono);letter-spacing:.03em}

/* ============ 页脚 ============ */
.footer{background:var(--night);color:#A9A5B2;margin-top:68px;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#F4F2EF;font-weight:700;font-size:17px;margin-bottom:14px}
.footer-brand .sb-mark{width:34px;height:34px;font-size:15px}
.footer p{font-size:14px;line-height:1.85;color:#8B8794}
.footer h4{color:#F4F2EF;font-size:14px;font-weight:600;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:#A9A5B2;transition:color .2s ease}
.footer-links a:hover{color:#fff}
.footer-bottom{
  margin-top:42px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;font-size:13px;color:#8B8794;
}
.to-top{margin-left:auto;display:inline-flex;align-items:center;gap:8px;color:#F4F2EF;font-size:13px;transition:color .2s}
.to-top:hover{color:var(--mint)}

/* ============ 响应式 ============ */
@media (min-width:1024px) and (max-width:1279px){
  :root{--sidebar-w:84px}
  .sidebar{padding:24px 12px;align-items:center}
  .sb-brand-text,.sb-link span,.sb-download span{display:none}
  .sb-link{justify-content:center;padding:0;width:52px}
  .sb-link.active::before{display:none}
  .sb-foot{align-items:center;width:100%}
  .sb-status span:last-child{display:none}
}
@media (max-width:1023px){
  .sidebar{transform:translateX(-100%);box-shadow:none}
  .sidebar.open{transform:translateX(0);box-shadow:0 24px 60px rgba(0,0,0,.35)}
  .topbar{display:flex}
  .main{margin-left:0;padding-top:56px}
  .split{grid-template-columns:1fr}
  .side{position:static}
  .flow{grid-template-columns:repeat(2,1fr)}
  .hero-inner{padding:40px 24px 76px}
  .cta-band{padding:34px 24px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:639px){
  .container{padding:0 16px}
  .stats{grid-template-columns:1fr 1fr}
  .stat{border-bottom:1px solid var(--line)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(3),.stat:nth-child(4){border-bottom:0}
  .stat .stat-num{font-size:22px}
  .row-card{grid-template-columns:1fr;gap:14px;padding:14px}
  .flow{grid-template-columns:1fr}
  .hero-actions .btn,.cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:44px 0}
  .cta-band{padding:28px 20px}
}

/* roulang page: category1 */
:root{
  --primary:#5B2BD9;
  --primary-dark:#4A21B8;
  --mint:#16C79A;
  --accent:#FF6B3D;
  --ink:#14131A;
  --bg:#F7F6F3;
  --card:#FFFFFF;
  --border:#E8E5DF;
  --line:#EDEAE4;
  --t1:#1A1820;
  --t2:#5A5763;
  --t3:#8B8794;
  --dt1:#F4F2EF;
  --dt2:#A9A5B2;
  --r-lg:28px;
  --r-md:18px;
  --r-sm:14px;
  --r-btn:12px;
  --sh-sm:0 1px 2px rgba(20,19,26,.06);
  --sh-md:0 8px 24px -8px rgba(20,19,26,.12);
  --sh-lg:0 24px 48px -16px rgba(91,43,217,.18);
  --mono:ui-monospace,"SFMono-Regular",Inter,Menlo,Consolas,"Courier New",monospace;
  --sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--bg);color:var(--t1);
  font-family:var(--sans);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul{padding:0;list-style:none;}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
::selection{background:rgba(91,43,217,.16);}

/* ============ 侧栏 App Shell ============ */
.sb{
  position:fixed;top:0;left:0;bottom:0;width:248px;
  background:var(--ink);z-index:90;display:flex;flex-direction:column;
  padding:22px 16px;overflow-y:auto;transition:transform .25s ease-out;
}
.sb::-webkit-scrollbar{width:6px;}
.sb::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:3px;}
.sb-head{display:flex;flex-direction:column;gap:10px;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.08);}
.sb-logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:15px;letter-spacing:-.01em;line-height:1.35;}
.sb-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),#7A52E8);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:16px;
  box-shadow:0 6px 16px -6px rgba(91,43,217,.7);
}
.sb-status{display:flex;align-items:center;gap:7px;color:var(--dt2);font-size:12px;}
.sb-status .dot{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(22,199,154,.16);}
.sb-nav{display:flex;flex-direction:column;gap:6px;padding:18px 0;flex:1;}
.sb-link{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;
  padding:0 12px;border-radius:10px;color:var(--dt2);font-size:15px;
  transition:background .2s ease-out,color .2s ease-out;
}
.sb-link i{width:18px;text-align:center;font-size:15px;flex:0 0 18px;}
.sb-link:hover{background:rgba(255,255,255,.06);color:#fff;}
.sb-link:focus-visible{outline:2px solid var(--mint);outline-offset:2px;}
.sb-link.active{background:rgba(91,43,217,.12);color:#fff;font-weight:600;}
.sb-link.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
}
.sb-foot{border-top:1px solid rgba(255,255,255,.08);padding-top:16px;display:flex;flex-direction:column;gap:10px;}
.sb-ver{font-size:12px;color:var(--dt2);line-height:1.65;}

/* ============ 顶栏与抽屉 ============ */
.topbar{
  position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.tb-logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:15px;color:var(--t1);}
.tb-logo .sb-mark{width:28px;height:28px;flex:0 0 28px;font-size:14px;border-radius:8px;}
.hamb{width:44px;height:44px;display:grid;place-items:center;border-radius:10px;font-size:18px;color:var(--t1);transition:background .2s;}
.hamb:hover{background:var(--bg);}
.hamb:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.sb-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s;
}
.sb-mask.open{opacity:1;visibility:visible;}

.layout{min-height:100vh;}
@media(max-width:1023px){
  .layout{padding-top:56px;}
  .sb{width:280px;transform:translateX(-100%);box-shadow:0 0 60px rgba(0,0,0,.45);}
  .sb.open{transform:translateX(0);}
}
@media(min-width:1024px){
  .topbar{display:none;}
  .sb-mask{display:none;}
  .layout{margin-left:84px;}
}
@media(min-width:1280px){
  .layout{margin-left:248px;}
}

/* 中屏图标窄栏 */
@media(min-width:1024px) and (max-width:1279px){
  .sb{width:84px;padding:22px 12px;align-items:center;}
  .sb-logo-text,.sb-status,.sb-link span,.sb-ver,.sb-dl-text{display:none;}
  .sb-head{width:100%;align-items:center;}
  .sb-logo{justify-content:center;}
  .sb-link{justify-content:center;padding:0;width:48px;}
  .sb-link.active::before{left:-12px;}
  .sb-foot{width:100%;align-items:center;}
  .sb .btn-dl{width:48px;padding:0;justify-content:center;}
}

/* ============ 容器与排版 ============ */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px;}
@media(max-width:640px){.container{padding:0 16px;}}
h1{font-size:clamp(30px,4.4vw,52px);font-weight:800;line-height:1.2;letter-spacing:-.01em;}
h2{
  font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;
  letter-spacing:-.01em;position:relative;padding-left:14px;
}
h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;
  border-radius:2px;background:var(--primary);
}
h3{font-size:20px;font-weight:600;line-height:1.4;}
.sec{padding:40px 0;}
@media(min-width:768px){.sec{padding:56px 0;}}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap;}
.sec-sub{color:var(--t2);font-size:15px;margin-top:10px;padding-left:14px;max-width:760px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:7px;height:28px;padding:0 12px;
  border-radius:999px;background:rgba(91,43,217,.1);color:var(--primary);
  font-size:13px;font-weight:600;margin-bottom:14px;
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:16px;flex-wrap:wrap;}
.crumb a{transition:color .2s;}
.crumb a:hover{color:var(--primary);}
.crumb .cur{color:var(--primary);font-weight:600;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .2s ease-out,background .2s,border-color .2s,color .2s,box-shadow .2s;
}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px -12px rgba(91,43,217,.9);}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;border:1.5px solid var(--border);color:var(--t1);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-dl{background:var(--accent);color:#fff;box-shadow:0 10px 22px -12px rgba(255,107,61,.95);}
.btn-dl:hover{filter:brightness(1.08);transform:translateY(-2px);}
.btn-dl:active{transform:translateY(1px);}
.btn-sm{height:42px;font-size:14px;padding:0 16px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;}
.link-arrow{color:var(--primary);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px;transition:gap .2s;}
.link-arrow:hover{gap:10px;}

/* ============ 标题带 ============ */
.page-head{padding:44px 0 28px;}
@media(min-width:1280px){.page-head{padding:56px 0 34px;}}
.ph-inner{display:grid;grid-template-columns:1fr;gap:26px;}
@media(min-width:1024px){.ph-inner{grid-template-columns:minmax(0,1fr) auto;align-items:end;}}
.ph-desc{color:var(--t2);font-size:16px;max-width:720px;margin-top:16px;}
.ph-meta{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:18px;font-size:13px;color:var(--t3);}
.ph-meta b{color:var(--t1);font-weight:600;}
.chips{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  height:40px;padding:0 16px;border-radius:999px;border:1.5px solid var(--border);
  background:#fff;color:var(--t2);font-size:14px;font-weight:600;
  display:inline-flex;align-items:center;gap:6px;transition:all .2s ease-out;
}
.chip:hover{border-color:rgba(91,43,217,.35);color:var(--primary);}
.chip.active{background:var(--primary);border-color:var(--primary);color:#fff;}
.chip:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

/* ============ 安装包卡片网格 ============ */
.pkg-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:640px){.pkg-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1280px){.pkg-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}}
.pkg-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--sh-sm);
  transition:transform .2s ease-out,box-shadow .2s,border-color .2s;
}
.pkg-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:rgba(91,43,217,.3);}
.pkg-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:rgba(91,43,217,.08);}
.pkg-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out;}
.pkg-card:hover .pkg-cover img{transform:scale(1.04);}
.pkg-tag{
  position:absolute;top:12px;left:12px;height:26px;padding:0 11px;border-radius:999px;
  background:rgba(20,19,26,.72);color:var(--dt1);font-size:12px;font-weight:600;
  display:inline-flex;align-items:center;gap:5px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
}
.pkg-badge{
  position:absolute;top:12px;right:12px;height:26px;padding:0 11px;border-radius:999px;
  background:var(--mint);color:#08301f;font-size:12px;font-weight:700;display:inline-flex;align-items:center;
}
.pkg-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1;}
.pkg-body p{color:var(--t2);font-size:14.5px;line-height:1.75;}
.pkg-spec{display:flex;flex-wrap:wrap;gap:8px 16px;font-size:13px;color:var(--t3);}
.pkg-spec li{display:inline-flex;align-items:center;gap:6px;}
.pkg-spec li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--mint);}
.pkg-foot{margin-top:auto;display:flex;align-items:center;gap:12px;padding-top:4px;}
.pkg-foot .btn{flex:1;}
.more-wrap{display:flex;justify-content:center;margin-top:30px;}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:1fr;gap:16px;}
@media(min-width:768px){.steps{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1280px){.steps{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}}
.step{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-sm);
  padding:22px;position:relative;transition:transform .2s,box-shadow .2s,border-color .2s;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:rgba(91,43,217,.3);}
.step-num{
  font-family:var(--mono);font-size:13px;font-weight:700;color:var(--primary);
  letter-spacing:.06em;display:block;margin-bottom:10px;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{color:var(--t2);font-size:14.5px;line-height:1.75;}

/* ============ 规格卡 ============ */
.spec-panel{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  padding:26px;display:grid;grid-template-columns:1fr;gap:14px;
}
@media(min-width:768px){.spec-panel{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 34px;padding:30px 34px;}}
.spec-row{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:12px 0;border-bottom:1px dashed var(--line);
}
.spec-row:last-child{border-bottom:0;}
.spec-k{color:var(--t2);font-size:14.5px;display:inline-flex;align-items:center;gap:8px;}
.spec-k i{color:var(--primary);font-size:13px;width:16px;text-align:center;}
.spec-v{font-family:var(--mono);font-size:13.5px;color:var(--t1);font-weight:600;text-align:right;}

/* ============ 场景图文 ============ */
.scene-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:1024px){.scene-grid{grid-template-columns:1.35fr 1fr;gap:24px;}}
.scene-main{
  position:relative;border-radius:var(--r-md);overflow:hidden;min-height:280px;
  display:flex;flex-direction:column;justify-content:flex-end;padding:28px;
  background:var(--ink);color:var(--dt1);
}
.scene-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5;}
.scene-main::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(150deg,rgba(91,43,217,.62),rgba(20,19,26,.92));
}
.scene-main>*{position:relative;z-index:2;}
.scene-main h3{color:#fff;font-size:22px;margin-bottom:10px;}
.scene-main p{color:rgba(244,242,239,.86);font-size:14.5px;line-height:1.8;max-width:520px;}
.scene-list{display:flex;flex-direction:column;gap:14px;}
.scene-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-sm);
  padding:20px;display:flex;gap:14px;transition:transform .2s,box-shadow .2s,border-color .2s;
}
.scene-item:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:rgba(91,43,217,.3);}
.scene-ico{
  width:42px;height:42px;flex:0 0 42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(91,43,217,.1);color:var(--primary);font-size:17px;
}
.scene-item h3{font-size:17px;margin-bottom:6px;}
.scene-item p{color:var(--t2);font-size:14.5px;line-height:1.72;}

/* ============ FAQ ============ */
.faq{max-width:840px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-sm);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.faq-item:hover{border-color:rgba(91,43,217,.28);}
.faq-item.open{box-shadow:var(--sh-md);border-color:rgba(91,43,217,.28);}
.faq-q{
  width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:14px 20px;font-size:16px;font-weight:600;text-align:left;color:var(--t1);
}
.faq-q:focus-visible{outline:2px solid var(--primary);outline-offset:-2px;}
.faq-q i{color:var(--primary);font-size:15px;transition:transform .22s ease-out;flex:0 0 auto;}
.faq-item.open .faq-q i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease-out;background:rgba(91,43,217,.04);}
.faq-a p{padding:0 20px 18px;color:var(--t2);font-size:15px;line-height:1.8;}
.faq-item.open .faq-a{max-height:400px;}

/* ============ CTA ============ */
.cta-band{
  position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--ink);
  padding:38px 26px;display:grid;gap:28px;
}
@media(min-width:1024px){.cta-band{grid-template-columns:1.05fr 1fr;padding:52px 44px;align-items:center;gap:40px;}}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:.26;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(91,43,217,.6),rgba(20,19,26,.9));
}
.cta-band>*{position:relative;z-index:2;}
.cta-band h2{color:#fff;padding-left:0;font-size:clamp(22px,2.6vw,30px);}
.cta-band h2::before{display:none;}
.cta-band p{color:rgba(244,242,239,.84);font-size:15px;margin-top:12px;max-width:520px;}
.cta-note{font-size:12.5px;color:var(--dt2);margin-top:16px;line-height:1.75;}
.cta-btns{display:grid;grid-template-columns:1fr;gap:12px;}
@media(min-width:520px){.cta-btns{grid-template-columns:repeat(2,minmax(0,1fr));}}
.cta-btn{
  display:flex;align-items:center;gap:12px;min-height:58px;padding:10px 16px;
  border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);color:var(--dt1);text-align:left;
  transition:background .2s,transform .2s,border-color .2s;
}
.cta-btn:hover{background:rgba(255,255,255,.13);border-color:rgba(22,199,154,.55);transform:translateY(-2px);}
.cta-btn:active{transform:translateY(1px);}
.cta-btn:focus-visible{outline:2px solid var(--mint);outline-offset:2px;}
.cta-btn i{font-size:19px;color:var(--mint);flex:0 0 auto;}
.cta-btn b{display:block;font-size:15px;font-weight:600;}
.cta-btn small{display:block;font-family:var(--mono);font-size:11.5px;color:var(--dt2);letter-spacing:.02em;}

/* ============ 页脚 ============ */
.footer{background:var(--ink);color:var(--dt2);margin-top:56px;padding:48px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:16px;margin-bottom:14px;}
.footer p{font-size:14px;line-height:1.8;max-width:320px;}
.footer h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;letter-spacing:.02em;}
.footer-links li{margin-bottom:11px;}
.footer-links a{font-size:14px;color:var(--dt2);transition:color .2s,padding-left .2s;}
.footer-links a:hover{color:var(--mint);padding-left:3px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding-top:20px;
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;font-size:13px;
}
.footer-bottom .num{color:var(--dt2);}
.to-top{
  margin-left:auto;display:inline-flex;align-items:center;gap:7px;
  padding:9px 15px;border-radius:999px;border:1px solid rgba(255,255,255,.16);
  color:var(--dt1);font-size:13px;transition:border-color .2s,color .2s,background .2s;
}
.to-top:hover{border-color:var(--primary);color:#fff;background:rgba(91,43,217,.18);}
.to-top:focus-visible{outline:2px solid var(--mint);outline-offset:2px;}
@media(max-width:640px){
  .footer{padding:38px 0 70px;}
  .to-top{margin-left:0;}
}

/* roulang page: category3 */
:root{
    --brand:#5B2BD9;
    --brand-deep:#4A1FB8;
    --mint:#16C79A;
    --orange:#FF6B3D;
    --ink:#14131A;
    --bg:#F7F6F3;
    --card:#FFFFFF;
    --line:#E8E5DF;
    --line-soft:#EDEAE4;
    --t1:#1A1820;
    --t2:#5A5763;
    --t3:#8B8794;
    --on-dark:#F4F2EF;
    --on-dark-2:#A9A5B2;
    --r-xl:28px;
    --r-md:18px;
    --r-sm:14px;
    --r-btn:12px;
    --sh-sm:0 1px 2px rgba(20,19,26,.06);
    --sh-md:0 8px 24px -8px rgba(20,19,26,.12);
    --sh-lg:0 24px 48px -16px rgba(91,43,217,.18);
    --sp-lg:80px;
    --sp-md:56px;
    --sp-sm:40px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.75;
    background:var(--bg);
    color:var(--t1);
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}
  h1,h2,h3,h4,p,ul,figure{margin:0;}
  ul{padding:0;list-style:none;}
  .num{font-family:Inter,ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;letter-spacing:.02em;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

  /* ============ 布局骨架 ============ */
  .main{margin-left:248px;min-height:100vh;display:flex;flex-direction:column;}
  .content{flex:1;}
  .wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 28px;}
  .container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px;}

  /* ============ 侧边导航 ============ */
  .sb{
    position:fixed;top:0;left:0;bottom:0;width:248px;
    background:var(--ink);color:var(--on-dark);
    display:flex;flex-direction:column;gap:20px;
    padding:22px 16px 20px;z-index:60;
  }
  .sb-top{display:flex;flex-direction:column;gap:10px;}
  .sb-logo{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;line-height:1.35;}
  .sb-mark{
    width:34px;height:34px;flex:0 0 34px;border-radius:10px;
    background:linear-gradient(135deg,var(--brand),#8B5CF6);
    display:grid;place-items:center;color:#fff;font-weight:800;font-size:16px;
  }
  .sb-sub{font-size:12px;color:var(--on-dark-2);padding-left:44px;}
  .sb-nav{display:flex;flex-direction:column;gap:4px;flex:1;overflow-y:auto;}
  .sb-link{
    position:relative;display:flex;align-items:center;gap:12px;
    height:44px;padding:0 12px;border-radius:10px;
    font-size:15px;color:#CFCBD8;
    transition:background .2s ease,color .2s ease;
  }
  .sb-link i{width:18px;font-size:16px;text-align:center;flex:0 0 18px;}
  .sb-link:hover{background:rgba(255,255,255,.06);color:#fff;}
  .sb-link.active{background:rgba(91,43,217,.12);color:#fff;}
  .sb-link.active::before{
    content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
    border-radius:2px;background:var(--brand);
  }
  .sb-bottom{margin-top:auto;display:flex;flex-direction:column;gap:10px;}
  .sb-dl{
    display:flex;align-items:center;justify-content:center;gap:8px;
    height:46px;border-radius:var(--r-btn);background:var(--orange);color:#fff;
    font-weight:600;font-size:15px;
    transition:transform .2s ease,filter .2s ease,box-shadow .2s ease;
  }
  .sb-dl:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 12px 24px -12px rgba(255,107,61,.8);}
  .sb-dl:active{transform:translateY(1px);}
  .sb-status{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--on-dark-2);padding-left:4px;}
  .sb-status .dot{width:8px;height:8px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 3px rgba(22,199,154,.18);flex:0 0 8px;}

  /* ============ 移动端顶部栏 / 遮罩 ============ */
  .mob-bar{
    display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
    align-items:center;justify-content:space-between;padding:0 16px;
    background:rgba(255,255,255,.96);backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .mob-logo{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;}
  .burger{
    width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);
    display:grid;place-items:center;font-size:18px;color:var(--ink);
    transition:background .2s ease,border-color .2s ease;
  }
  .burger:hover{background:var(--bg);border-color:var(--brand);color:var(--brand);}
  .mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:55;}
  .mask.show{display:block;}

  /* ============ 页面标题带 ============ */
  .page-head{
    position:relative;overflow:hidden;background:var(--card);
    border-bottom:1px solid var(--line);padding:44px 0 34px;
  }
  .page-head::after{
    content:"";position:absolute;right:-140px;top:-140px;width:440px;height:440px;border-radius:50%;
    background:radial-gradient(circle,rgba(91,43,217,.10),rgba(91,43,217,0) 68%);
    pointer-events:none;
  }
  .head-inner{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:40px;align-items:center;}
  .crumb{font-size:13px;color:var(--t3);margin-bottom:14px;}
  .crumb a{transition:color .2s ease;}
  .crumb a:hover{color:var(--brand);}
  .crumb .sep{margin:0 6px;color:var(--line);}
  .crumb .cur{color:var(--brand);}
  h1{
    font-size:clamp(28px,3.6vw,42px);font-weight:800;line-height:1.25;letter-spacing:-.01em;
  }
  .lead{margin-top:16px;max-width:620px;font-size:16px;line-height:1.8;color:var(--t2);}
  .head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .head-art img{
    width:100%;height:auto;border-radius:var(--r-md);border:1px solid var(--line);
    box-shadow:var(--sh-md);object-fit:cover;aspect-ratio:16/10;
  }

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:48px;padding:0 22px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;white-space:nowrap;
    transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease,filter .2s ease;
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-md);}
  .btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:var(--sh-lg);}
  .btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-sm);}
  .btn-ghost{background:var(--card);border:1.5px solid #E0DCD4;color:var(--t1);}
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
  .btn-orange{background:var(--orange);color:#fff;}
  .btn-orange:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 14px 28px -14px rgba(255,107,61,.9);}
  .btn-outline-light{background:transparent;border:1.5px solid rgba(255,255,255,.55);color:#fff;}
  .btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:#fff;transform:translateY(-2px);}
  .btn-disabled{opacity:.5;cursor:not-allowed;}

  /* ============ 锚点条 ============ */
  .anchor-bar{
    position:sticky;top:0;z-index:40;
    background:rgba(247,246,243,.93);backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .anchor-inner{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:12px 28px;}
  .anchor-label{font-size:13px;color:var(--t3);margin-right:4px;}
  .chip{
    display:inline-flex;align-items:center;gap:6px;
    padding:8px 16px;border-radius:999px;background:var(--card);
    border:1px solid #E0DCD4;font-size:14px;color:var(--t2);
    transition:transform .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease;
  }
  .chip:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-sm);}
  .chip i{font-size:12px;color:var(--mint);}

  /* ============ 板块与分组 ============ */
  .section{padding:var(--sp-md) 0 0;}
  .group{scroll-margin-top:120px;margin-bottom:var(--sp-sm);}
  .group-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:8px 20px;margin-bottom:20px;}
  .group-head h2{
    position:relative;padding-left:16px;font-size:26px;font-weight:700;line-height:1.35;
  }
  .group-head h2::before{
    content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--brand);
  }
  .group-head p{font-size:14px;color:var(--t2);}
  .group-count{
    margin-left:auto;font-size:12.5px;color:var(--t3);
    padding:4px 12px;border-radius:999px;background:rgba(91,43,217,.07);
  }

  /* ============ 紧凑索引列表 ============ */
  .idx-panel{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
    padding:6px 18px;box-shadow:var(--sh-sm);
  }
  .idx-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 34px;}
  .idx-row{
    display:flex;align-items:flex-start;gap:16px;
    min-height:76px;padding:18px 10px;border-bottom:1px solid var(--line-soft);
    border-radius:var(--r-sm);transition:background .2s ease,padding-left .2s ease;
  }
  .idx-row:hover{background:var(--bg);padding-left:16px;}
  .idx-grid .idx-row:nth-last-child(-n+2){border-bottom:none;}
  .idx-no{
    width:36px;height:36px;flex:0 0 36px;border-radius:10px;
    background:rgba(91,43,217,.08);color:var(--brand);
    display:grid;place-items:center;font-size:13px;font-weight:700;
  }
  .idx-main{flex:1;min-width:0;}
  .idx-title{display:block;font-size:16px;font-weight:600;line-height:1.5;color:var(--t1);}
  .idx-desc{
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
    margin-top:4px;font-size:13.5px;line-height:1.7;color:var(--t2);
  }
  .idx-meta{flex:0 0 auto;padding-top:6px;}
  .idx-time{font-size:12.5px;color:var(--t3);}
  .tag-soft{
    display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;
    font-size:12px;color:var(--brand);background:rgba(91,43,217,.09);
  }
  .tag-mint{color:#0E9B79;background:rgba(22,199,154,.13);}
  .tag-orange{color:#D9502A;background:rgba(255,107,61,.13);}

  /* ============ FAQ ============ */
  .faq-wrap{max-width:840px;}
  .faq-wrap h2{position:relative;padding-left:16px;font-size:26px;font-weight:700;}
  .faq-wrap h2::before{
    content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--brand);
  }
  .faq-wrap .section-sub{margin:10px 0 22px;font-size:14px;color:var(--t2);padding-left:16px;}
  .faq-item{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
    margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
  }
  .faq-item:hover{border-color:rgba(91,43,217,.3);}
  .faq-item.open{box-shadow:var(--sh-md);}
  .faq-q{
    width:100%;min-height:56px;padding:12px 20px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    font-size:16px;font-weight:600;text-align:left;color:var(--t1);
  }
  .faq-q i{color:var(--brand);transition:transform .2s ease;flex:0 0 auto;}
  .faq-item.open .faq-q i{transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;background:rgba(91,43,217,.04);}
  .faq-item.open .faq-a{max-height:360px;}
  .faq-a p{padding:14px 20px 18px;font-size:14.5px;line-height:1.8;color:var(--t2);}

  /* ============ 收口 CTA ============ */
  .cta-band{
    position:relative;overflow:hidden;border-radius:var(--r-xl);
    background:var(--brand);color:#fff;
    padding:40px 42px 30px;
    display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
    box-shadow:var(--sh-lg);
  }
  .cta-band::before{
    content:"";position:absolute;inset:0;
    background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    opacity:.18;
  }
  .cta-band::after{
    content:"";position:absolute;inset:0;
    background:repeating-linear-gradient(135deg,rgba(255,255,255,.07) 0 2px,transparent 2px 12px);
    opacity:.6;pointer-events:none;
  }
  .cta-band > *{position:relative;z-index:1;}
  .cta-text{max-width:520px;}
  .cta-text h2{font-size:24px;font-weight:700;color:#fff;line-height:1.35;}
  .cta-text p{margin-top:10px;font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.85);}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
  .cta-note{
    flex:1 0 100%;font-size:12.5px;color:rgba(255,255,255,.72);
    padding-top:18px;border-top:1px solid rgba(255,255,255,.22);
  }

  /* ============ 页脚 ============ */
  .footer{background:var(--ink);color:var(--on-dark);margin-top:var(--sp-lg);padding:56px 0 22px;}
  .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;}
  .footer-brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;margin-bottom:14px;}
  .footer p{font-size:13.5px;line-height:1.85;color:var(--on-dark-2);max-width:370px;}
  .footer h4{font-size:14px;font-weight:600;color:var(--on-dark-2);margin-bottom:14px;}
  .footer-links{display:flex;flex-direction:column;gap:10px;}
  .footer-links a{font-size:14px;color:#CFCBD8;transition:color .2s ease;}
  .footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
  .footer-bottom{
    margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
    display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;
    font-size:12.5px;color:#8B8794;
  }
  .to-top{
    margin-left:auto;display:inline-flex;align-items:center;gap:6px;
    color:#CFCBD8;font-size:12.5px;transition:color .2s ease,transform .2s ease;
  }
  .to-top:hover{color:#fff;transform:translateY(-2px);}

  /* ============ 响应式 ============ */
  @media (max-width:1279px){
    .sb{width:84px;padding:22px 12px;align-items:center;}
    .sb-name,.sb-sub,.sb-link span,.sb-status span{display:none;}
    .sb-logo{justify-content:center;}
    .sb-link{justify-content:center;padding:0;}
    .sb-link.active::before{left:-8px;}
    .sb-dl{width:56px;padding:0;}
    .sb-dl span{display:none;}
    .sb-status{justify-content:center;padding-left:0;}
    .main{margin-left:84px;}
  }
  @media (max-width:1023px){
    .mob-bar{display:flex;}
    .sb{
      width:280px;padding:22px 16px;align-items:stretch;
      transform:translateX(-100%);transition:transform .26s ease;
      box-shadow:0 24px 48px -16px rgba(20,19,26,.5);
    }
    .sb.open{transform:translateX(0);}
    .sb-name,.sb-sub,.sb-link span,.sb-status span{display:block;}
    .sb-logo{justify-content:flex-start;}
    .sb-link{justify-content:flex-start;padding:0 12px;}
    .sb-link.active::before{left:0;}
    .sb-dl{width:auto;padding:0 18px;}
    .sb-dl span{display:inline;}
    .sb-status{justify-content:flex-start;padding-left:4px;}
    .main{margin-left:0;padding-top:56px;}
    .anchor-bar{top:56px;}
    .head-inner{grid-template-columns:1fr;gap:26px;}
    .head-art{order:-1;}
    .group-head h2,.faq-wrap h2{font-size:22px;}
    .cta-band{padding:32px 24px 24px;}
    .idx-grid{grid-template-columns:1fr;}
    .idx-grid .idx-row:nth-last-child(-n+2){border-bottom:1px solid var(--line-soft);}
    .idx-grid .idx-row:last-child{border-bottom:none;}
  }
  @media (max-width:767px){
    .wrap,.container{padding:0 18px;}
    .anchor-inner{padding:10px 18px;}
    .section{padding:40px 0 0;}
    .page-head{padding:32px 0 26px;}
    h1{font-size:26px;}
    .idx-row{flex-wrap:wrap;gap:12px;min-height:0;padding:16px 8px;}
    .idx-meta{padding-top:0;margin-left:52px;}
    .cta-band{flex-direction:column;align-items:flex-start;}
    .cta-actions{width:100%;flex-direction:column;}
    .cta-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;}
    .to-top{margin-left:0;}
  }
  @media (max-width:519px){
    .head-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;}
  }