/* roulang page: index */
:root{
  --c-primary:#2B1E63;
  --c-primary-dark:#201549;
  --c-primary-light:#4C3AB8;
  --c-accent:#2ED3B7;
  --c-accent-soft:rgba(46,211,183,.12);
  --c-gold:#F5B94A;
  --c-text:#23242E;
  --c-text-2:#5A5E70;
  --c-text-3:#8A8FA3;
  --c-border:#E6E7F0;
  --c-bg-soft:#F4F5FA;
  --c-white:#FFFFFF;
  --r-card:16px;
  --r-block:20px;
  --r-btn:12px;
  --r-btn-lg:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(35,20,80,.06);
  --sh-2:0 12px 28px rgba(35,20,80,.12);
  --ctn:1200px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-primary-light);text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out;}
a:hover{color:var(--c-primary);}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4,h5,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
input,button,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--ctn);margin:0 auto;padding:0 16px;}
@media(min-width:768px){.container{padding:0 24px;}}
@media(min-width:1280px){.container{padding:0 32px;}}
.tnum{font-variant-numeric:tabular-nums;}

/* ---------- 通用标题层级 ---------- */
.h1{font-size:clamp(30px,5vw,52px);line-height:1.15;font-weight:700;letter-spacing:-.01em;}
.h2{font-size:clamp(24px,3.2vw,36px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}
.h3{font-size:20px;line-height:1.4;font-weight:600;}
.h4{font-size:17px;line-height:1.5;font-weight:600;}
.lead{font-size:17px;line-height:1.8;color:var(--c-text-2);}
.muted{color:var(--c-text-3);font-size:13px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-btn-lg);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.btn:active{transform:translateY(0);}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:var(--r-btn);}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 1px 2px rgba(35,20,80,.16);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:rgba(43,30,99,.2);}
.btn-ghost:hover{background:rgba(43,30,99,.06);color:var(--c-primary);}
.btn-accent{background:var(--c-accent);color:#0C2A26;box-shadow:0 6px 18px rgba(46,211,183,.28);}
.btn-accent:hover{background:#28C2A8;color:#0C2A26;transform:translateY(-1px);box-shadow:0 12px 26px rgba(46,211,183,.34);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.4);}
.btn-outline-light:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.7);}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;}

/* ---------- 标签 / 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.02em;font-weight:600;line-height:1;
}
.badge-primary{background:rgba(43,30,99,.08);color:var(--c-primary);}
.badge-accent{background:var(--c-accent-soft);color:#177A68;}
.badge-gold{background:rgba(245,185,74,.18);color:#8A5A00;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#FCFCFE;
  border-bottom:1px solid var(--c-border);box-shadow:0 2px 8px rgba(35,20,80,.04);
}
.header-inner{display:flex;align-items:center;gap:18px;height:56px;}
@media(min-width:1024px){.header-inner{height:64px;gap:26px;}}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--c-text);}
.brand:hover{color:var(--c-primary);}
.brand-mark{
  width:26px;height:26px;border-radius:50%;flex-shrink:0;
  background:radial-gradient(circle at 32% 30%,#6C57E0 0%,#2B1E63 62%,#201549 100%);
  position:relative;box-shadow:0 0 0 1px rgba(43,30,99,.08);
}
.brand-mark::after{
  content:"";position:absolute;inset:0;border-radius:50%;
  background:
    radial-gradient(circle at 70% 26%,var(--c-gold) 0 1.6px,transparent 1.8px),
    radial-gradient(circle at 30% 70%,var(--c-accent) 0 1.4px,transparent 1.6px);
}
.brand-text{font-size:16px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
@media(min-width:1024px){.brand-text{font-size:17px;}}
.main-nav{display:none;align-items:center;gap:4px;margin-left:6px;}
@media(min-width:1024px){.main-nav{display:flex;}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:64px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--c-text-2);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;border-radius:2px;background:var(--c-accent);
}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{
  display:none;align-items:center;gap:8px;height:40px;padding:0 14px;
  border:1px solid var(--c-border);border-radius:var(--r-pill);background:#fff;min-width:250px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
@media(min-width:1180px){.search-box{display:flex;}}
.search-box:focus-within{border-color:var(--c-accent);box-shadow:0 0 0 3px var(--c-accent-soft);}
.search-box svg{flex-shrink:0;color:var(--c-text-3);}
.search-box input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--c-text);}
.search-box input::placeholder{color:var(--c-text-3);}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;
  border:1px solid var(--c-border);border-radius:var(--r-btn);background:#fff;color:var(--c-primary);
}
@media(min-width:1024px){.nav-toggle{display:none;}}
.mobile-drawer{display:none;border-top:1px solid var(--c-border);background:#fff;}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:flex;align-items:center;height:48px;padding:0 4px;font-size:15px;color:var(--c-text-2);
  border-bottom:1px solid var(--c-border);
}
.mobile-drawer a.is-active{color:var(--c-primary);font-weight:600;}
.mobile-drawer .drawer-cta{padding:16px 0 8px;border-bottom:0;}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;margin:14px 0 6px;border:1px solid var(--c-border);border-radius:var(--r-btn);}
.drawer-search input{border:0;outline:0;width:100%;font-size:14px;background:transparent;}

/* ---------- 深空底 ---------- */
.deep{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(135deg,#151032 0%,#241A56 100%);
}
.deep::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.9;
  background-image:
    radial-gradient(circle,rgba(255,255,255,.10) 1px,transparent 1.6px),
    radial-gradient(circle,rgba(46,211,183,.10) 1px,transparent 1.6px);
  background-size:44px 44px,72px 72px;
  background-position:0 0,22px 26px;
}
.deep > *{position:relative;z-index:1;}

/* ---------- Hero ---------- */
.hero{padding:56px 0 64px;}
@media(min-width:1024px){.hero{padding:76px 0 88px;}}
.hero-grid{display:grid;gap:40px;align-items:center;}
@media(min-width:1024px){.hero-grid{grid-template-columns:6fr 6fr;gap:56px;}}
.hero-copy{max-width:600px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  color:#D9D4FF;font-size:13px;font-weight:600;letter-spacing:.02em;
}
.hero h1{color:#fff;margin-top:18px;}
.hero h1 .hl{color:var(--c-accent);}
.hero-sub{margin-top:16px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.76);max-width:540px;}
@media(min-width:768px){.hero-sub{font-size:17px;}}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:14px 28px;margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);}
.hero-meta-item{display:flex;flex-direction:column;gap:2px;}
.hero-meta-item .k{font-size:12px;color:rgba(255,255,255,.55);letter-spacing:.02em;}
.hero-meta-item .v{font-size:15px;font-weight:600;color:#fff;}
.hero-shot{position:relative;}
.hero-shot img{
  width:100%;border-radius:var(--r-block);object-fit:cover;aspect-ratio:16/11;
  border:1px solid rgba(255,255,255,.16);box-shadow:0 24px 60px rgba(8,4,32,.5);
}
.hero-badge{
  position:absolute;right:-6px;bottom:-14px;
  display:flex;align-items:center;gap:8px;padding:10px 16px;border-radius:var(--r-pill);
  background:var(--c-gold);color:#3A2400;font-size:13px;font-weight:700;
  box-shadow:0 12px 26px rgba(0,0,0,.32);
}
@media(max-width:520px){.hero-badge{right:8px;bottom:-12px;padding:8px 14px;font-size:12px;}}

/* ---------- 板块通用 ---------- */
.section{padding:56px 0;}
@media(min-width:768px){.section{padding:72px 0;}}
@media(min-width:1024px){.section{padding:96px 0;}}
.section-soft{background:var(--c-bg-soft);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px;}
.section-head p{max-width:640px;margin-top:10px;color:var(--c-text-2);font-size:15px;}
.section-more{font-size:14px;font-weight:600;color:var(--c-primary-light);display:inline-flex;align-items:center;gap:6px;}
.section-more:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}

/* ---------- 价值点 2×2 错位 ---------- */
.value-grid{display:grid;gap:20px;}
@media(min-width:768px){
  .value-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .value-grid > *:nth-child(even){transform:translateY(24px);}
}
.value-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.value-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(43,30,99,.16);}
.value-num{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;
  background:rgba(43,30,99,.07);color:var(--c-primary);font-size:14px;font-weight:700;letter-spacing:.02em;
}
.value-icon{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;
  background:var(--c-accent-soft);color:#177A68;margin-left:10px;
}
.value-card h3{margin-top:18px;color:var(--c-text);}
.value-card p{margin-top:10px;color:var(--c-text-2);font-size:15px;line-height:1.8;}
.value-row{display:flex;align-items:center;}

/* ---------- 截图轮播 ---------- */
.shots{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 18px;margin:0 -4px;
  scrollbar-width:thin;
}
.shots::-webkit-scrollbar{height:6px;}
.shots::-webkit-scrollbar-thumb{background:rgba(43,30,99,.2);border-radius:999px;}
.shot-card{
  flex:0 0 84%;scroll-snap-align:start;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.shot-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
@media(min-width:640px){.shot-card{flex:0 0 46%;}}
@media(min-width:1024px){.shot-card{flex:0 0 31%;}}
.shot-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.shot-body{padding:18px 20px 20px;}
.shot-body h3{font-size:17px;font-weight:600;}
.shot-body p{margin-top:8px;font-size:14px;color:var(--c-text-2);line-height:1.75;}
.shots-nav{display:flex;align-items:center;gap:12px;margin-top:6px;}
.shots-dots{display:flex;gap:8px;}
.shots-dots span{width:8px;height:8px;border-radius:50%;background:rgba(43,30,99,.18);}
.shots-dots span.on{background:var(--c-primary);width:22px;border-radius:999px;}
.shots-arrows{display:none;gap:10px;margin-left:auto;}
@media(min-width:1024px){.shots-arrows{display:flex;}}
.arrow-btn{
  width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--c-border);background:#fff;
  color:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;
}
.arrow-btn:hover{background:rgba(43,30,99,.06);}

/* ---------- 系统要求 ---------- */
.spec-grid{display:grid;gap:24px;}
@media(min-width:1024px){.spec-grid{grid-template-columns:1fr 1fr;gap:32px;}}
.spec-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);}
.spec-card h3{display:flex;align-items:center;gap:10px;}
.spec-card dl{margin-top:20px;display:grid;gap:12px;}
.spec-card dl > div{
  display:grid;grid-template-columns:104px 1fr;gap:14px;padding-bottom:12px;
  border-bottom:1px dashed var(--c-border);
}
.spec-card dl > div:last-child{border-bottom:0;padding-bottom:0;}
.spec-card dt{font-size:14px;color:var(--c-text-3);}
.spec-card dd{font-size:14px;color:var(--c-text);font-weight:500;}
.platform-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.platform-chip{
  display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--c-bg-soft);border:1px solid var(--c-border);font-size:13px;color:var(--c-text-2);font-weight:500;
}

/* ---------- 评价墙 ---------- */
.quote-grid{display:grid;gap:20px;}
@media(min-width:768px){.quote-grid{grid-template-columns:1fr 1fr;}}
@media(min-width:1024px){
  .quote-grid{grid-template-columns:repeat(3,1fr);gap:24px;}
  .quote-col:nth-child(2){transform:translateY(24px);}
}
.quote-card{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:24px;
  box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:14px;
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.quote-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.quote-top{display:flex;align-items:center;gap:12px;}
.avatar{
  width:44px;height:44px;border-radius:50%;flex-shrink:0;object-fit:cover;
  border:1px solid var(--c-border);
}
.quote-name{font-size:15px;font-weight:600;}
.quote-sub{font-size:12px;color:var(--c-text-3);}
.stars{margin-left:auto;color:var(--c-gold);font-size:13px;letter-spacing:2px;}
.quote-text{font-size:15px;line-height:1.85;color:var(--c-text-2);}
.quote-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;}

/* ---------- 下载区 ---------- */
.download{padding:64px 0;}
@media(min-width:1024px){.download{padding:96px 0;}}
.download-inner{text-align:center;max-width:900px;margin:0 auto;}
.download h2{color:#fff;}
.download p{margin-top:16px;color:rgba(255,255,255,.72);font-size:16px;line-height:1.85;}
.dl-grid{display:grid;gap:14px;margin-top:40px;}
@media(min-width:640px){.dl-grid{grid-template-columns:1fr 1fr;}}
@media(min-width:1024px){.dl-grid{grid-template-columns:repeat(5,1fr);}}
.dl-btn{
  display:flex;flex-direction:column;align-items:flex-start;gap:4px;
  padding:16px 18px;border-radius:var(--r-btn-lg);border:1px solid rgba(255,255,255,.4);
  background:rgba(255,255,255,.04);color:#fff;text-align:left;
  transition:transform .18s ease-out,background-color .18s ease-out,border-color .18s ease-out;
}
.dl-btn:hover{transform:translateY(-2px);background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.72);color:#fff;}
.dl-btn .name{display:flex;align-items:center;gap:8px;font-size:15px;font-weight:600;}
.dl-btn .size{font-size:12px;color:rgba(255,255,255,.62);font-variant-numeric:tabular-nums;}
.dl-btn.is-primary{background:var(--c-accent);border-color:var(--c-accent);color:#0C2A26;box-shadow:0 12px 30px rgba(46,211,183,.28);}
.dl-btn.is-primary:hover{background:#28C2A8;color:#0C2A26;border-color:#28C2A8;}
.dl-btn.is-primary .size{color:rgba(12,42,38,.7);}
.dl-note{margin-top:22px;font-size:13px;color:rgba(255,255,255,.62);}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;gap:24px;}
@media(min-width:768px){.news-grid{grid-template-columns:1fr 1fr;}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);}}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(43,30,99,.16);}
.news-card:hover .news-title{color:var(--c-primary-light);}
.news-thumb{aspect-ratio:16/9;width:100%;object-fit:cover;background:var(--c-bg-soft);}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-title{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--c-text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s ease-out;
}
.news-desc{
  font-size:14px;color:var(--c-text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:12px;border-top:1px solid var(--c-border);font-size:13px;}
.news-meta .cat{color:var(--c-primary-light);font-weight:600;}
.news-meta .time{color:var(--c-text-3);font-variant-numeric:tabular-nums;margin-left:auto;}
.empty-state{
  border:1px dashed var(--c-border);border-radius:var(--r-card);background:#fff;
  padding:48px 24px;text-align:center;
}
.empty-state .dot{
  width:44px;height:44px;margin:0 auto 16px;border-radius:50%;
  background:radial-gradient(circle at 34% 32%,#6C57E0,#2B1E63 68%);
  box-shadow:0 0 0 6px rgba(43,30,99,.06);
}
.empty-state p{color:var(--c-text-2);font-size:15px;}
.empty-state .btns{display:flex;justify-content:center;gap:12px;margin-top:20px;flex-wrap:wrap;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.faq-item summary{
  display:flex;align-items:center;gap:14px;min-height:56px;padding:14px 22px;
  font-size:16px;font-weight:600;color:var(--c-text);cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);}
.faq-sign{
  margin-left:auto;flex-shrink:0;width:22px;height:22px;position:relative;
  transition:transform .2s ease-out;
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
}
.faq-sign::before{left:0;right:0;top:10px;height:2px;}
.faq-sign::after{top:0;bottom:0;left:10px;width:2px;}
.faq-item[open] .faq-sign{transform:rotate(45deg);}
.faq-answer{
  padding:4px 22px 20px;font-size:15px;line-height:1.85;color:var(--c-text-2);
  border-top:1px dashed var(--c-border);margin:0 0 0 0;padding-top:16px;
}

/* ---------- 页脚 ---------- */
.site-footer{color:#fff;padding:64px 0 0;}
.footer-grid{display:grid;gap:32px;padding-bottom:40px;}
@media(min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;}
.footer-text{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);max-width:340px;}
.footer-h{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-list{display:grid;gap:10px;}
.footer-list a{font-size:14px;color:rgba(255,255,255,.7);}
.footer-list a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-platforms{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.footer-platforms span{
  font-size:12px;color:rgba(255,255,255,.7);border:1px solid rgba(255,255,255,.22);
  border-radius:var(--r-pill);padding:4px 10px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px 24px;font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.7);}
.footer-bottom .right{margin-left:auto;}

@media(max-width:520px){
  .hero-btns .btn{width:100%;}
  .dl-btn{align-items:center;}
  .footer-bottom{font-size:12px;}
}

/* roulang page: article */
:root{
  --c-primary:#2B1E63;
  --c-primary-dark:#201549;
  --c-primary-light:#4C3AB8;
  --c-accent:#2ED3B7;
  --c-gold:#F5B94A;
  --c-text:#23242E;
  --c-text-2:#5A5E70;
  --c-text-3:#8A8FA3;
  --c-line:#E6E7F0;
  --c-soft:#F4F5FA;
  --c-white:#FFFFFF;
  --c-danger:#D9534F;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:12px;
  --r-cta:14px;
  --sh-1:0 1px 2px rgba(35,20,80,.06);
  --sh-2:0 12px 28px rgba(35,20,80,.12);
  --sh-3:0 2px 8px rgba(35,20,80,.04);
  --container:1200px;
  --gap-section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary-light);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--c-primary)}
button,input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
table{border-collapse:collapse}
::selection{background:rgba(46,211,183,.28)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:16px;padding-right:16px}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#FCFCFE;
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-3);
}
.header-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-primary);font-weight:700;letter-spacing:-.01em;flex:0 0 auto}
.brand:hover{color:var(--c-primary)}
.brand-mark{
  position:relative;width:26px;height:26px;border-radius:50%;
  background:radial-gradient(circle at 30% 28%,#6C5AE0 0%,var(--c-primary) 58%,var(--c-primary-dark) 100%);
  box-shadow:0 0 0 1px rgba(46,211,183,.45),inset 0 0 6px rgba(46,211,183,.35);
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;right:3px;top:2px;width:6px;height:6px;border-radius:50%;
  background:var(--c-accent);box-shadow:0 0 6px rgba(46,211,183,.9);
}
.brand-text{font-size:17px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;flex:1 1 auto;justify-content:center}
.nav-link{
  display:inline-flex;align-items:center;height:64px;padding:0 14px;
  color:var(--c-text-2);font-size:15px;font-weight:500;position:relative;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;border-radius:2px;
  background:var(--c-accent);transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out;
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.search-box{position:relative;display:flex;align-items:center}
.search-box svg{position:absolute;left:12px;width:16px;height:16px;color:var(--c-text-3);pointer-events:none}
.search-box input{
  width:210px;height:40px;border-radius:999px;border:1px solid var(--c-line);
  background:var(--c-soft);padding:0 16px 0 34px;color:var(--c-text);font-size:14px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,background .18s ease-out;
}
.search-box input::placeholder{color:var(--c-text-3)}
.search-box input:focus{outline:none;background:#fff;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(46,211,183,.18)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--c-line);background:#fff;
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--c-primary);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:16px;height:2px;border-radius:2px;background:var(--c-primary);transition:transform .18s ease-out}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-5px) rotate(-45deg)}
.mobile-drawer{display:none;border-top:1px solid var(--c-line);background:#fff;padding:8px 0 16px}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{
  display:flex;align-items:center;height:48px;padding:0 20px;color:var(--c-text-2);font-size:15px;
  border-bottom:1px solid var(--c-soft);
}
.mobile-drawer a.is-active{color:var(--c-primary);font-weight:600;background:var(--c-soft)}
.mobile-drawer .drawer-cta{margin:14px 20px 0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;
  font-size:15px;font-weight:600;line-height:1;padding:14px 26px;
  transition:background-color .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-lg{padding:16px 32px;font-size:16px;border-radius:var(--r-cta)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:rgba(43,30,99,.2)}
.btn-ghost:hover{background:rgba(43,30,99,.06);color:var(--c-primary)}
.btn-accent{background:var(--c-accent);color:#0E2A26}
.btn-accent:hover{background:#28C2A8;color:#0E2A26;transform:translateY(-1px);box-shadow:0 12px 28px rgba(46,211,183,.28)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.7)}

/* ---------- 深空底 ---------- */
.deep{
  position:relative;color:#fff;
  background:linear-gradient(135deg,#151032 0%,#241A56 100%);
  overflow:hidden;
}
.deep::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.09;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px),radial-gradient(rgba(46,211,183,.9) 1px,transparent 1px);
  background-size:64px 64px,96px 96px;
  background-position:0 0,32px 40px;
}
.deep > *{position:relative;z-index:1}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--c-soft);border-bottom:1px solid var(--c-line)}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:14px 0;font-size:13px;color:var(--c-text-3)}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:#C3C7D6}
.crumb .now{color:var(--c-primary);font-weight:500}

/* ---------- 文章头部 ---------- */
.article-head{padding:44px 0 28px;border-bottom:1px solid var(--c-line)}
.article-head-inner{max-width:820px}
.article-tag-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:4px 10px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;font-weight:500;
  background:rgba(43,30,99,.08);color:var(--c-primary);
}
.tag-accent{background:rgba(46,211,183,.16);color:#157A68}
.tag-gold{background:rgba(245,185,74,.18);color:#8A5D06}
.article-title{
  font-size:clamp(28px,4.4vw,44px);font-weight:700;line-height:1.22;letter-spacing:-.01em;
  color:var(--c-primary-dark);max-width:760px;
}
.article-lead{margin-top:16px;font-size:16px;line-height:1.8;color:var(--c-text-2);max-width:760px}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:14px;margin-top:22px;font-size:13px;color:var(--c-text-3)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C7CBD9}
.article-meta .v{color:var(--c-text-2)}

/* ---------- 正文布局 ---------- */
.article-section{padding:56px 0 72px;background:#fff}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start}
.article-body{
  max-width:780px;font-size:16px;line-height:1.9;color:var(--c-text);
}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;font-size:clamp(21px,2.6vw,28px);font-weight:700;line-height:1.4;
  color:var(--c-primary-dark);margin:2.1em 0 .85em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-accent),var(--c-primary-light));
}
.article-body h3{font-size:19px;font-weight:600;color:var(--c-primary-dark);margin:1.7em 0 .7em;line-height:1.5}
.article-body h4{font-size:17px;font-weight:600;color:var(--c-text);margin:1.4em 0 .6em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.5em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.42em 0}
.article-body li::marker{color:var(--c-primary-light)}
.article-body a{color:var(--c-primary-light);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--c-primary)}
.article-body strong{font-weight:600;color:var(--c-primary-dark)}
.article-body blockquote{
  margin:1.4em 0;padding:16px 22px;background:var(--c-soft);
  border-left:3px solid var(--c-accent);border-radius:0 12px 12px 0;color:var(--c-text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:1.4em 0;width:100%;height:auto}
.article-body figure{margin:1.6em 0}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--c-text-3);text-align:center}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  font-size:.9em;background:var(--c-soft);border:1px solid var(--c-line);
  border-radius:6px;padding:2px 6px;color:var(--c-primary);
}
.article-body pre{
  margin:1.4em 0;padding:18px 20px;background:var(--c-soft);border:1px solid var(--c-line);
  border-radius:12px;overflow-x:auto;line-height:1.7;
}
.article-body pre code{background:none;border:0;padding:0;color:var(--c-text);font-size:14px}
.article-body table{width:100%;margin:1.4em 0;font-size:15px;border:1px solid var(--c-line);border-radius:12px;overflow:hidden}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:11px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--c-soft);font-weight:600;color:var(--c-primary-dark)}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2em 0}
.article-body > *:first-child{margin-top:0}

/* 空态 */
.empty-state{
  border:1px dashed var(--c-line);border-radius:var(--r-lg);background:var(--c-soft);
  padding:48px 28px;text-align:center;
}
.empty-state .mark{
  width:44px;height:44px;margin:0 auto 16px;border-radius:50%;
  background:radial-gradient(circle at 32% 30%,#6C5AE0,var(--c-primary) 65%);
  box-shadow:0 0 0 1px rgba(46,211,183,.4);
}
.empty-state h2{font-size:20px;font-weight:700;color:var(--c-primary-dark);margin-bottom:8px}
.empty-state p{color:var(--c-text-2);font-size:15px;margin-bottom:22px}

/* ---------- 侧栏 ---------- */
.side-card{
  position:sticky;top:88px;border:1px solid var(--c-line);border-radius:var(--r-card);
  background:#fff;box-shadow:var(--sh-1);padding:20px;
}
.side-card + .side-card{margin-top:20px;position:static}
.side-h{font-size:15px;font-weight:600;color:var(--c-primary-dark);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-h::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 6px rgba(46,211,183,.8)}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;padding:7px 10px;border-radius:8px;font-size:14px;color:var(--c-text-2);
  border-left:2px solid transparent;line-height:1.5;
}
.toc-list a:hover{background:var(--c-soft);color:var(--c-primary);border-left-color:var(--c-accent)}
.side-links{display:flex;flex-direction:column;gap:10px}
.side-links a{font-size:14px;color:var(--c-text-2);display:flex;align-items:center;gap:8px}
.side-links a::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--c-primary-light);flex:0 0 auto}
.side-links a:hover{color:var(--c-primary)}

/* ---------- 相关推荐 ---------- */
.related-section{background:var(--c-soft);padding:64px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.sec-title{font-size:clamp(22px,3vw,30px);font-weight:700;color:var(--c-primary-dark);line-height:1.3}
.sec-sub{margin-top:10px;font-size:15px;color:var(--c-text-2);max-width:640px}
.sec-more{font-size:14px;font-weight:600;color:var(--c-primary-light);white-space:nowrap}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(43,30,99,.16);color:inherit}
.card:hover .card-title{color:var(--c-primary-light)}
.card-cover{aspect-ratio:16/9;width:100%;object-fit:cover;background:var(--c-soft)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.card-title{font-size:18px;font-weight:600;line-height:1.5;color:var(--c-primary-dark);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-desc{font-size:14px;color:var(--c-text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-text-3);padding-top:6px}
.card-foot .cat{color:var(--c-primary-light);font-weight:500}

/* ---------- 返回入口 ---------- */
.back-row{
  display:flex;flex-wrap:wrap;align-items:center;align-items:center;gap:14px;
  margin-top:48px;padding-top:32px;border-top:1px solid var(--c-line);
}

/* ---------- CTA ---------- */
.cta-deep{border-radius:var(--r-lg);padding:56px 36px;text-align:center;margin-top:0}
.cta-deep h2{font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.3}
.cta-deep p{margin:14px auto 0;max-width:620px;font-size:15px;color:rgba(255,255,255,.78)}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:28px}
.cta-note{margin-top:20px;font-size:13px;color:rgba(255,255,255,.6)}
.cta-wrap{padding:0 0 72px}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.faq-item{border:1px solid var(--c-line);border-radius:var(--r-card);background:#fff;box-shadow:var(--sh-1);overflow:hidden}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 20px;cursor:pointer;font-size:15px;font-weight:600;color:var(--c-primary-dark);
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(43,30,99,.08);color:var(--c-primary);font-size:16px;font-weight:600;line-height:1;
  transition:transform .18s ease-out;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item[open] summary{border-bottom:1px dashed var(--c-line)}
.faq-body{padding:16px 20px 20px;font-size:14px;line-height:1.85;color:var(--c-text-2)}

/* ---------- 页脚 ---------- */
.site-footer{padding:64px 0 28px;color:rgba(255,255,255,.75);font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;margin-bottom:14px}
.footer-text{line-height:1.8;color:rgba(255,255,255,.7);max-width:360px}
.footer-platforms{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.footer-platforms span{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  border:1px solid rgba(255,255,255,.22);font-size:12px;color:rgba(255,255,255,.75);
}
.footer-h{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-list{display:flex;flex-direction:column;gap:11px}
.footer-list a{color:rgba(255,255,255,.7);font-size:14px}
.footer-list a:hover{color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom .right{color:rgba(255,255,255,.45)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding-left:24px;padding-right:24px}
}
@media (max-width:1023px){
  :root{--gap-section:64px}
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .search-box{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .article-aside{display:none}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px}
  .header-inner{height:56px;gap:12px}
  .brand-text{font-size:15px}
  .article-head{padding:28px 0 22px}
  .article-section{padding:36px 0 52px}
  .article-body{font-size:16px;line-height:1.85}
  .related-section{padding:44px 0}
  .faq-grid{grid-template-columns:minmax(0,1fr)}
  .cta-deep{padding:40px 20px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-text{max-width:none}
  .btn{padding:13px 22px}
}
@media (max-width:520px){
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%}
  .article-title{font-size:26px}
}

/* roulang page: category1 */
:root{
  --c-primary:#2B1E63;
  --c-primary-dark:#201549;
  --c-primary-light:#4C3AB8;
  --c-accent:#2ED3B7;
  --c-gold:#F5B94A;
  --c-text:#23242E;
  --c-text-2:#5A5E70;
  --c-text-3:#8A8FA3;
  --c-line:#E6E7F0;
  --c-bg-soft:#F4F5FA;
  --c-white:#FFFFFF;
  --r-card:16px;
  --r-block:20px;
  --r-btn:12px;
  --r-btn-lg:14px;
  --sh-1:0 1px 2px rgba(35,20,80,.06);
  --sh-2:0 12px 28px rgba(35,20,80,.12);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-white);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,dl,dd,dt,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:var(--c-primary-light);text-decoration:none}
a:hover{text-decoration:underline}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:16px;
  padding-right:16px;
}
@media(min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media(min-width:1280px){.container{padding-left:32px;padding-right:32px}}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#FCFCFE;
  border-bottom:1px solid var(--c-line);
  box-shadow:0 2px 8px rgba(35,20,80,.04);
}
.header-inner{
  display:flex;align-items:center;gap:20px;height:64px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  font-size:16px;font-weight:700;color:var(--c-primary);
  white-space:nowrap;
}
.brand:hover{text-decoration:none;color:var(--c-primary-light)}
.brand-mark{
  width:26px;height:26px;border-radius:50%;flex:none;position:relative;
  background:
    radial-gradient(circle at 30% 28%,#F5B94A 0 3px,transparent 3.4px),
    radial-gradient(circle at 70% 66%,#2ED3B7 0 2.4px,transparent 2.8px),
    radial-gradient(circle at 62% 26%,rgba(255,255,255,.9) 0 1.6px,transparent 2px),
    linear-gradient(135deg,#2B1E63,#4C3AB8);
  box-shadow:0 0 0 1px rgba(43,30,99,.12);
}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 12px;font-size:15px;color:var(--c-text-2);
  border-radius:8px;transition:color .18s ease-out,background-color .18s ease-out;
}
.nav-link:hover{color:var(--c-primary);background:rgba(43,30,99,.05);text-decoration:none}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;
  background:var(--c-accent);border-radius:2px;
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search input{
  width:210px;height:40px;border-radius:999px;
  border:1px solid var(--c-line);background:#fff;
  padding:0 16px 0 38px;font-size:14px;outline:none;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.nav-search input::placeholder{color:var(--c-text-3)}
.nav-search input:focus{border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(46,211,183,.18)}
.nav-search .search-icon{
  position:absolute;left:14px;width:14px;height:14px;
  border:1.6px solid var(--c-text-3);border-radius:50%;
}
.nav-search .search-icon::after{
  content:"";position:absolute;right:-4px;bottom:-3px;width:6px;height:1.6px;
  background:var(--c-text-3);transform:rotate(45deg);border-radius:2px;
}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:4px;
  width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;align-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-primary);border-radius:2px}
.mobile-drawer{display:none;border-top:1px solid var(--c-line);background:#fff;padding:12px 0 20px}
.mobile-drawer.is-open{display:block}
.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 4px;
  font-size:15px;color:var(--c-text-2);border-bottom:1px solid var(--c-line);
}
.drawer-link.is-active{color:var(--c-primary);font-weight:600}
.drawer-link:hover{text-decoration:none;color:var(--c-primary-light)}
.drawer-cta{margin-top:16px;width:100%}
@media(max-width:1023px){
  .main-nav{display:none}
  .nav-search{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .header-actions{margin-left:0}
}
@media(min-width:1024px){
  .nav-toggle{display:none}
  .mobile-drawer{display:none !important}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-btn-lg);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .18s ease-out,color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 2px 10px rgba(43,30,99,.18)}
.btn-primary:hover{background:#372A79;box-shadow:0 10px 22px rgba(43,30,99,.24)}
.btn-secondary{background:#fff;border-color:rgba(43,30,99,.2);color:var(--c-primary)}
.btn-secondary:hover{background:rgba(43,30,99,.06)}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:var(--r-btn)}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
.btn-ghost-light:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.7)}
.btn-accent{background:var(--c-accent);color:#151032;box-shadow:0 6px 18px rgba(46,211,183,.28)}
.btn-accent:hover{background:#27bda4}
.btn[disabled],.btn.is-disabled{opacity:.55;cursor:not-allowed;transform:none}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background-image:linear-gradient(135deg,rgba(21,16,50,.94),rgba(36,26,86,.92)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  padding:52px 0 64px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    radial-gradient(rgba(255,255,255,.20) 1px,transparent 1.4px),
    radial-gradient(rgba(255,255,255,.12) 1px,transparent 1.4px);
  background-size:72px 72px,34px 34px;
  background-position:0 0,18px 24px;
}
.page-hero .container{position:relative;z-index:1}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.7);margin-bottom:20px}
.crumbs a{color:rgba(255,255,255,.7)}
.crumbs a:hover{color:#fff}
.crumbs .sep{opacity:.5}
.crumbs .current{color:#fff}
.hero-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:48px}}
.page-hero h1{
  font-size:clamp(28px,4.6vw,46px);font-weight:700;line-height:1.18;letter-spacing:-.01em;
}
.page-hero .hero-sub{
  margin-top:16px;max-width:640px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.82);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-tag{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;color:#EAF7F4;
  background:rgba(46,211,183,.14);border:1px solid rgba(46,211,183,.35);
}
.hero-figure{position:relative;border-radius:var(--r-block);overflow:hidden;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.04)}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-badge{
  position:absolute;right:14px;bottom:14px;
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;
  background:rgba(21,16,50,.72);border:1px solid rgba(245,185,74,.5);
  color:var(--c-gold);font-size:12px;letter-spacing:.02em;
}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-gold)}

/* ---------- sections ---------- */
section{padding:56px 0}
@media(min-width:1024px){section{padding:88px 0}}
.section-soft{background:var(--c-bg-soft)}
.section-head{max-width:760px;margin-bottom:36px}
.section-eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--c-primary-light);
  background:rgba(76,58,184,.09);border-radius:999px;padding:4px 12px;margin-bottom:14px;
}
h2{font-size:clamp(23px,3.1vw,34px);font-weight:700;line-height:1.28;letter-spacing:-.01em}
.section-head p{margin-top:14px;color:var(--c-text-2);font-size:16px}
h3{font-size:20px;font-weight:600;line-height:1.4}
h4{font-size:17px;font-weight:600;line-height:1.5}
.muted{color:var(--c-text-2)}
.tiny{font-size:13px;color:var(--c-text-3)}

/* ---------- method cards ---------- */
.method-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.method-grid{grid-template-columns:repeat(3,1fr)}}
.method-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.method-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(76,58,184,.28)}
.method-card:hover h3{color:var(--c-primary-light)}
.method-card h3{transition:color .18s ease-out}
.method-icon{
  width:44px;height:44px;border-radius:12px;margin-bottom:18px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(43,30,99,.06);color:var(--c-primary);
}
.method-icon svg{width:22px;height:22px}
.method-card p{margin-top:10px;color:var(--c-text-2);font-size:15px}
.method-note{margin-top:14px;display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.02em;color:var(--c-primary);background:rgba(46,211,183,.14);border-radius:999px;padding:4px 10px}

/* ---------- steps ---------- */
.steps{margin-top:8px}
.step{position:relative;display:grid;grid-template-columns:48px 1fr;gap:16px;padding-bottom:28px}
@media(min-width:768px){.step{grid-template-columns:64px 1fr;gap:24px;padding-bottom:32px}}
.step:last-child{padding-bottom:0}
.step:not(:last-child)::before{
  content:"";position:absolute;left:23px;top:48px;bottom:0;width:2px;
  background:linear-gradient(180deg,rgba(46,211,183,.55),rgba(43,30,99,.14));
}
@media(min-width:768px){.step:not(:last-child)::before{left:31px;top:64px}}
.step-no{
  width:48px;height:48px;border-radius:50%;flex:none;position:relative;z-index:1;
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--c-line);box-shadow:var(--sh-1);
  font-size:15px;font-weight:700;color:var(--c-primary);
}
@media(min-width:768px){.step-no{width:64px;height:64px;font-size:20px}}
.step-body{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:18px 20px;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
@media(min-width:768px){.step-body{padding:22px 24px}}
.step-body:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.step-body h3{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.step-body p{margin-top:10px;color:var(--c-text-2);font-size:15px}
.step-media{margin-top:14px;border-radius:12px;overflow:hidden;border:1px solid var(--c-line)}
.step-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.step-media figcaption{margin:0;padding:8px 12px;font-size:12px;color:var(--c-text-3);background:#FAFAFD}
.pill{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;font-weight:600;
}
.pill-primary{background:rgba(43,30,99,.08);color:var(--c-primary)}
.pill-accent{background:rgba(46,211,183,.16);color:#1F7A6A}
.pill-gold{background:rgba(245,185,74,.18);color:#8A5B0B}
.step-meta{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px}

/* ---------- check cards ---------- */
.check-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:768px){.check-grid{grid-template-columns:repeat(2,1fr)}}
.check-card{
  display:flex;gap:16px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);
  transition:border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.check-card:hover{border-color:rgba(46,211,183,.5);box-shadow:var(--sh-2);transform:translateY(-2px)}
.check-dot{
  width:10px;height:10px;border-radius:50%;flex:none;margin-top:8px;
  background:var(--c-accent);box-shadow:0 0 0 4px rgba(46,211,183,.16);
}
.check-card h4{margin-bottom:6px}
.check-card p{color:var(--c-text-2);font-size:15px}

/* ---------- cta band ---------- */
.cta-band{
  max-width:900px;margin:0 auto;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-block);padding:28px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:20px;
}
@media(min-width:768px){.cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:32px 36px}}
.cta-band h2{font-size:clamp(21px,2.6vw,28px)}
.cta-band p{margin-top:8px;color:var(--c-text-2);font-size:15px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:none}

/* ---------- faq ---------- */
.faq-list{margin-top:8px}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.faq-item:hover{border-color:rgba(76,58,184,.28)}
.faq-item[open]{box-shadow:var(--sh-1);border-color:rgba(76,58,184,.28)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:56px;padding:14px 20px;font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--c-primary-light)}
.faq-icon{
  position:relative;width:18px;height:18px;flex:none;transition:transform .2s ease-out;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-primary-light);border-radius:2px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-answer{
  padding:0 20px 20px;border-top:1px dashed var(--c-line);
  margin:0 20px 0;padding-left:0;padding-right:0;color:var(--c-text-2);font-size:15px;line-height:1.8;
}
.faq-answer p + p{margin-top:10px}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.related-grid{grid-template-columns:repeat(2,1fr)}}
.related-card{
  display:block;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.related-card:hover{text-decoration:none;transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(76,58,184,.28)}
.related-card:hover h3{color:var(--c-primary-light)}
.related-card h3{transition:color .18s ease-out}
.related-card p{margin-top:10px;color:var(--c-text-2);font-size:15px}
.related-more{margin-top:16px;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary-light)}
.related-more::after{content:"→"}

/* ---------- footer ---------- */
.site-footer{
  color:#fff;position:relative;overflow:hidden;
  background-image:linear-gradient(135deg,#151032,#241A56);
  padding:56px 0 28px;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.45;
  background-image:
    radial-gradient(rgba(255,255,255,.16) 1px,transparent 1.4px),
    radial-gradient(rgba(255,255,255,.10) 1px,transparent 1.4px);
  background-size:80px 80px,38px 38px;
  background-position:0 0,20px 26px;
}
.site-footer .container{position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff}
.footer-text{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);max-width:340px}
.footer-platforms{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-platforms span{
  font-size:12px;letter-spacing:.02em;color:rgba(255,255,255,.78);
  border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:3px 10px;
}
.footer-h{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{font-size:14px;color:rgba(255,255,255,.7)}
.footer-list a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom .right{color:rgba(255,255,255,.5)}

/* roulang page: category2 */
:root{
  --c-primary:#2B1E63;
  --c-primary-dark:#201549;
  --c-primary-light:#4C3AB8;
  --c-accent:#2ED3B7;
  --c-gold:#F5B94A;
  --c-text:#23242E;
  --c-text-2:#5A5E70;
  --c-muted:#8A8FA3;
  --c-line:#E6E7F0;
  --c-soft:#F4F5FA;
  --c-white:#FFFFFF;
  --deep:linear-gradient(135deg,#151032 0%,#241A56 100%);
  --r-card:16px;
  --r-block:20px;
  --r-btn:12px;
  --r-cta:14px;
  --sh-1:0 1px 2px rgba(35,20,80,.06);
  --sh-2:0 12px 28px rgba(35,20,80,.12);
  --t:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;color:var(--c-text);background:#fff;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--c-primary-light);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
button,input{font:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-text);letter-spacing:-0.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:8px}
.num{font-variant-numeric:tabular-nums}

header .container,main .container,footer .container{
  width:100%;max-width:1200px;margin:0 auto;
  padding-left:16px;padding-right:16px;
}
@media(min-width:768px){header .container,main .container,footer .container{padding-left:24px;padding-right:24px}}
@media(min-width:1280px){header .container,main .container,footer .container{padding-left:32px;padding-right:32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#FCFCFE;
  border-bottom:1px solid var(--c-line);
  box-shadow:0 2px 8px rgba(35,20,80,.04);
}
.header-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--c-text);white-space:nowrap;letter-spacing:-.01em}
.brand:hover{color:var(--c-primary-light);text-decoration:none}
.brand-mark{
  width:26px;height:26px;border-radius:999px;flex:none;
  background:radial-gradient(circle at 32% 30%,#7C6BE8 0%,#2B1E63 62%,#201549 100%);
  box-shadow:0 0 0 1px rgba(43,30,99,.18),inset 0 0 6px rgba(255,255,255,.45);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;top:6px;right:6px;width:4px;height:4px;border-radius:999px;
  background:var(--c-gold);box-shadow:0 0 6px rgba(245,185,74,.9);
}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-link{
  position:relative;padding:8px 12px;border-radius:10px;font-size:15px;color:var(--c-text-2);
  transition:color var(--t),background var(--t);white-space:nowrap;
}
.nav-link:hover{color:var(--c-primary-light);background:rgba(76,58,184,.06);text-decoration:none}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;
  background:var(--c-accent);border-radius:2px;
}
.header-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  border:1px solid var(--c-line);border-radius:999px;background:#fff;min-width:212px;
  transition:border-color var(--t),box-shadow var(--t);
}
.search-box:focus-within{border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(46,211,183,.18)}
.search-box svg{flex:none;color:var(--c-muted)}
.search-box input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--c-text)}
.search-box input::placeholder{color:var(--c-muted)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:40px;height:40px;
  border:1px solid var(--c-line);border-radius:12px;background:#fff;cursor:pointer;color:var(--c-primary);
}
.mobile-nav{
  display:none;border-top:1px solid var(--c-line);background:#fff;padding:12px 0 20px;
}
.mobile-nav.is-open{display:block}
.mobile-nav a{
  display:flex;align-items:center;height:48px;padding:0 4px;font-size:15px;color:var(--c-text-2);
  border-bottom:1px solid var(--c-line);
}
.mobile-nav a:hover{text-decoration:none;color:var(--c-primary-light)}
.mobile-nav a.is-active{color:var(--c-primary);font-weight:600}
.mobile-nav .mobile-cta{margin-top:16px;border-bottom:0}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;text-decoration:none;
  transition:background var(--t),color var(--t),box-shadow var(--t),transform var(--t),border-color var(--t);
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:#241856;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:#fff;border-color:rgba(43,30,99,.2);color:var(--c-primary)}
.btn-ghost:hover{background:rgba(43,30,99,.06);color:var(--c-primary)}
.btn-accent{background:var(--c-accent);color:#0E2C27;box-shadow:0 6px 18px rgba(46,211,183,.28)}
.btn-accent:hover{background:#25BEA5;color:#09231F;transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.7)}
.btn-lg{padding:14px 26px;border-radius:var(--r-cta);font-size:16px}
.btn-sm{padding:9px 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;transform:none}

/* ---------- tags ---------- */
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;background:rgba(43,30,99,.08);color:var(--c-primary);
}
.tag-accent{background:rgba(46,211,183,.16);color:#14806D}
.tag-gold{background:rgba(245,185,74,.2);color:#8A5B06}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  background:var(--deep);
  border-bottom-left-radius:24px;border-bottom-right-radius:24px;
}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  opacity:.22;
}
.page-hero .hero-dots{
  position:absolute;inset:0;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.35) 1px,transparent 1px),
                   radial-gradient(rgba(255,255,255,.18) 1px,transparent 1px);
  background-size:48px 48px,96px 96px;
  background-position:0 0,24px 24px;
}
.page-hero .hero-inner{position:relative;padding:34px 0 56px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72)}
.crumb a{color:rgba(255,255,255,.72)}
.crumb a:hover{color:#fff}
.crumb .sep{opacity:.5}
.page-hero h1{
  color:#fff;font-size:clamp(28px,4.4vw,46px);line-height:1.18;font-weight:700;
  margin:18px 0 14px;max-width:820px;
}
.page-hero .lead{max-width:680px;font-size:16px;color:rgba(255,255,255,.78);line-height:1.8}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-tags span{
  font-size:12px;padding:5px 12px;border-radius:999px;
  border:1px solid rgba(255,255,255,.24);color:rgba(255,255,255,.85);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-lines{position:absolute;right:24px;bottom:24px;opacity:.35;pointer-events:none;display:none}
@media(min-width:1024px){.hero-lines{display:block}}

/* ---------- sections ---------- */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:72px 0}}
@media(min-width:1024px){.section{padding:96px 0}}
.section-soft{background:var(--c-soft)}
.section-head{margin-bottom:32px;max-width:760px}
.kicker{
  display:inline-block;font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--c-primary-light);font-weight:700;margin-bottom:10px;
}
.section-head h2{font-size:clamp(24px,3.2vw,34px);line-height:1.25;font-weight:700}
.section-head p{margin-top:12px;color:var(--c-text-2);font-size:15.5px}
.section-head .bar{width:48px;height:3px;border-radius:999px;background:var(--c-accent);margin-bottom:16px}

/* ---------- feature rows ---------- */
.feature-stack{display:grid;gap:32px}
@media(min-width:1024px){.feature-stack{gap:56px}}
.feature-row{
  display:grid;gap:20px;padding:20px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-block);box-shadow:var(--sh-1);
  transition:box-shadow var(--t),transform var(--t);
}
.feature-row:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
@media(min-width:768px){.feature-row{padding:24px;gap:28px}}
@media(min-width:1024px){
  .feature-row{grid-template-columns:5fr 7fr;gap:48px;align-items:center;padding:28px}
  .feature-row.is-reverse{grid-template-columns:7fr 5fr}
  .feature-row.is-reverse .feature-media{order:2}
}
.feature-media{border-radius:var(--r-card);overflow:hidden;background:var(--c-soft)}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.feature-body h3{font-size:20px;font-weight:600;margin:12px 0 10px}
.feature-body p{color:var(--c-text-2);font-size:15px;line-height:1.8}
.feature-points{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:8px}
.feature-points li{position:relative;padding-left:20px;font-size:14px;color:var(--c-text-2)}
.feature-points li::before{
  content:"";position:absolute;left:2px;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--c-accent);transform:rotate(45deg);
}

/* ---------- version cards ---------- */
.grid-cards{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:640px){.grid-cards{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.grid-cards{grid-template-columns:repeat(3,1fr)}}
.v-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.v-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(43,30,99,.18)}
.v-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.v-card-head h3{font-size:17px;font-weight:600}
.v-meta{margin:16px 0 0;padding:0;display:grid;gap:10px}
.v-meta div{display:flex;justify-content:space-between;gap:16px;font-size:14px;color:var(--c-text-2);border-bottom:1px dashed var(--c-line);padding-bottom:8px}
.v-meta div:last-child{border-bottom:0;padding-bottom:0}
.v-meta dt{color:var(--c-muted)}
.v-meta dd{margin:0;color:var(--c-text);font-weight:600}
.v-card .v-note{margin-top:14px;font-size:13px;color:var(--c-muted)}

/* ---------- timeline ---------- */
.timeline{position:relative;margin:0;padding:0 0 0 26px;list-style:none;border-left:1px solid var(--c-line)}
.tl-item{position:relative;padding-bottom:30px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-33px;top:7px;width:12px;height:12px;border-radius:999px;
  background:var(--c-accent);box-shadow:0 0 0 4px rgba(46,211,183,.18);
}
.tl-item .tl-time{font-size:13px;color:var(--c-muted)}
.tl-item h3{font-size:17px;font-weight:600;margin:6px 0 6px}
.tl-item p{color:var(--c-text-2);font-size:14.5px}

/* ---------- platform strip ---------- */
.platform-strip{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;justify-content:space-between;
  padding:22px;border:1px solid var(--c-line);border-radius:var(--r-block);background:#fff;box-shadow:var(--sh-1);
}
.platform-list{display:flex;flex-wrap:wrap;gap:10px}
.platform-list span{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--c-text-2);
  padding:8px 14px;border-radius:999px;background:var(--c-soft);border:1px solid var(--c-line);
}
.platform-list i{width:8px;height:8px;border-radius:999px;background:var(--c-accent);display:inline-block}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px}
@media(min-width:1024px){.faq-list{grid-template-columns:1fr 1fr;gap:16px;align-items:start}}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:56px;padding:16px 20px;font-weight:600;font-size:16px;color:var(--c-text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:20px;line-height:1;color:var(--c-primary-light);transition:transform var(--t);flex:none;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item summary:hover{color:var(--c-primary-light)}
.faq-body{padding:0 20px 20px;color:var(--c-text-2);font-size:14.5px;line-height:1.85;border-top:1px dashed var(--c-line);padding-top:14px}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;padding:44px 20px;text-align:center;color:#fff;
  background:var(--deep);
}
@media(min-width:768px){.cta-band{padding:60px 48px}}
.cta-band .cta-dots{
  position:absolute;inset:0;opacity:.45;
  background-image:radial-gradient(rgba(255,255,255,.35) 1px,transparent 1px),
                   radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:44px 44px,88px 88px;background-position:0 0,22px 22px;
}
.cta-band .cta-inner{position:relative;max-width:720px;margin:0 auto}
.cta-band h2{color:#fff;font-size:clamp(24px,3.4vw,34px);line-height:1.25}
.cta-band p{margin-top:14px;color:rgba(255,255,255,.78);font-size:15.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:26px}
.cta-note{margin-top:18px;font-size:13px;color:rgba(255,255,255,.6)}

/* ---------- footer ---------- */
.site-footer{
  margin-top:72px;padding-top:56px;color:rgba(255,255,255,.72);
  background:var(--deep);position:relative;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;opacity:.4;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.28) 1px,transparent 1px);
  background-size:60px 60px;
}
.site-footer .container{position:relative}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px}
.footer-text{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);max-width:340px}
.footer-platforms{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.footer-platforms span{
  font-size:12px;padding:4px 10px;border-radius:999px;
  border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.78);
}
.footer-h{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{color:rgba(255,255,255,.7);font-size:14px}
.footer-list a:hover{color:#fff;text-decoration:none}
.footer-bottom{
  margin-top:40px;padding:20px 0 26px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom .right{color:rgba(255,255,255,.5)}

/* ---------- responsive nav ---------- */
@media(max-width:1023px){
  .main-nav,.search-box{display:none}
  .nav-toggle{display:inline-flex}
}
@media(max-width:520px){
  .header-inner{height:56px;gap:12px}
  .brand span.brand-text{font-size:14.5px}
  .btn{padding:11px 18px;font-size:14.5px}
}

/* roulang page: category3 */
:root{
  --c-primary:#2B1E63;
  --c-primary-dark:#201549;
  --c-primary-light:#4C3AB8;
  --c-accent:#2ED3B7;
  --c-gold:#F5B94A;
  --c-ink:#23242E;
  --c-muted:#5A5E70;
  --c-soft:#8A8FA3;
  --c-line:#E6E7F0;
  --c-mist:#F4F5FA;
  --c-white:#FFFFFF;
  --r-card:16px;
  --r-block:20px;
  --r-btn:12px;
  --shadow-1:0 1px 2px rgba(35,20,80,.06);
  --shadow-2:0 12px 28px rgba(35,20,80,.12);
  --container:1200px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:#FFFFFF;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary-light);text-decoration:none;}
a:hover{text-decoration:underline;text-underline-offset:3px;}
button,input{font-family:inherit;}
h1,h2,h3,h4,p,dl,dd,figure{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:16px;
  padding-right:16px;
}
@media(min-width:768px){.container{padding-left:24px;padding-right:24px;}}
@media(min-width:1280px){.container{padding-left:32px;padding-right:32px;}}

a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--c-accent);
  outline-offset:2px;
  border-radius:6px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#FCFCFE;
  border-bottom:1px solid var(--c-line);
  box-shadow:0 2px 8px rgba(35,20,80,.04);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:64px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:var(--c-primary);
  letter-spacing:-.01em;
  text-decoration:none;
  white-space:nowrap;
}
.brand:hover{text-decoration:none;}
.brand-mark{
  position:relative;
  width:26px;
  height:26px;
  flex:0 0 auto;
  border-radius:50%;
  background:linear-gradient(135deg,#2B1E63 0%,#4C3AB8 100%);
  box-shadow:0 2px 8px rgba(43,30,99,.28), inset 0 0 0 1px rgba(255,255,255,.18);
}
.brand-mark::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--c-gold);
  transform:translate(-50%,-50%);
  box-shadow:
    -7px -6px 0 -1px rgba(46,211,183,.9),
    7px 5px 0 -1px rgba(255,255,255,.85),
    -6px 6px 0 -1.5px rgba(255,255,255,.55),
    7px -6px 0 -1.5px rgba(46,211,183,.65);
}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:64px;
  padding:0 14px;
  font-size:15px;
  color:var(--c-muted);
  text-decoration:none;
  transition:color .18s ease-out;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:12px;
  height:2px;
  border-radius:2px;
  background:transparent;
  transition:background .18s ease-out;
}
.nav-link:hover{color:var(--c-primary);text-decoration:none;}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{background:var(--c-accent);}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.search-box{position:relative;display:flex;align-items:center;}
.search-box svg{
  position:absolute;
  left:13px;
  width:16px;
  height:16px;
  color:var(--c-soft);
  pointer-events:none;
}
.search-box input{
  width:220px;
  height:40px;
  border-radius:999px;
  border:1px solid var(--c-line);
  background:#fff;
  padding:0 16px 0 38px;
  font-size:14px;
  color:var(--c-ink);
  transition:border-color .18s ease-out, box-shadow .18s ease-out;
}
.search-box input::placeholder{color:var(--c-soft);}
.search-box input:focus{
  outline:none;
  border-color:var(--c-accent);
  box-shadow:0 0 0 3px rgba(46,211,183,.22);
}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border-radius:12px;
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-primary);
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  position:relative;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  border-radius:2px;
  background:currentColor;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-drawer{
  display:none;
  max-height:0;
  overflow:hidden;
  transition:max-height .28s ease-out;
  border-bottom:1px solid var(--c-line);
  background:#fff;
}
.mobile-drawer.open{max-height:420px;}
.drawer-inner{padding:8px 16px 20px;}
.drawer-link{
  display:flex;
  align-items:center;
  height:48px;
  font-size:16px;
  color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
  text-decoration:none;
}
.drawer-link.is-active{color:var(--c-primary);font-weight:600;}
.drawer-cta{margin-top:16px;display:flex;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  text-decoration:none;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn:hover{text-decoration:none;}
.btn-primary{
  background:var(--c-primary);
  color:#fff;
  border-radius:14px;
  box-shadow:0 6px 16px rgba(43,30,99,.22);
}
.btn-primary:hover{background:#241857;transform:translateY(-1px);box-shadow:0 12px 26px rgba(43,30,99,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(43,30,99,.2);}
.btn-outline{
  background:#fff;
  border-color:rgba(43,30,99,.22);
  color:var(--c-primary);
}
.btn-outline:hover{background:rgba(43,30,99,.06);transform:translateY(-1px);}
.btn-accent{
  background:var(--c-accent);
  color:#0E2A25;
  border-radius:14px;
  box-shadow:0 8px 20px rgba(46,211,183,.3);
}
.btn-accent:hover{background:#26C1A7;transform:translateY(-1px);}
.btn-ghost-light{
  background:transparent;
  border-color:rgba(255,255,255,.42);
  color:#fff;
}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:12px;}
.btn-block{width:100%;}

/* ============ 徽章 / 标签 ============ */
.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.02em;
  background:rgba(43,30,99,.08);
  color:var(--c-primary);
  white-space:nowrap;
}
.tag-accent{background:rgba(46,211,183,.16);color:#0F6E5E;}
.tag-gold{background:rgba(245,185,74,.2);color:#7A5308;}

/* ============ 深空底 ============ */
.deep{
  position:relative;
  background:linear-gradient(135deg,#151032 0%,#241A56 100%);
  color:#fff;
}
.deep::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1.4px);
  background-size:190px 190px;
  opacity:.55;
  pointer-events:none;
}
.deep > *{position:relative;z-index:2;}

/* ============ 页面标题带 ============ */
.page-banner{
  position:relative;
  overflow:hidden;
  padding:26px 0 58px;
  color:#fff;
  background-image:
    linear-gradient(135deg,rgba(21,16,50,.95),rgba(36,26,86,.86)),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.page-banner::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1.4px);
  background-size:190px 190px;
  opacity:.5;
  pointer-events:none;
}
.page-banner::after{
  content:"";
  position:absolute;
  right:-80px;
  top:-60px;
  width:420px;
  height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(76,58,184,.55),transparent 68%);
  pointer-events:none;
}
.banner-inner{position:relative;z-index:2;max-width:820px;}
.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.72);
  margin-bottom:18px;
}
.crumbs a{color:rgba(255,255,255,.72);}
.crumbs a:hover{color:#fff;}
.crumbs .sep{opacity:.5;}
.crumbs .current{color:#fff;}
.page-banner h1{
  font-size:clamp(28px,4.6vw,46px);
  font-weight:700;
  line-height:1.18;
  letter-spacing:-.01em;
  margin-bottom:16px;
}
.banner-lead{
  font-size:16px;
  line-height:1.85;
  color:rgba(255,255,255,.82);
  max-width:720px;
}
.banner-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
}
.banner-tags span{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  font-size:13px;
  color:#fff;
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.18);
  font-variant-numeric:tabular-nums;
}

/* ============ 通用板块 ============ */
.section{padding:64px 0;}
@media(min-width:768px){.section{padding:80px 0;}}
@media(min-width:1280px){.section{padding:96px 0;}}
.section-mist{background:var(--c-mist);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{
  font-size:clamp(24px,3.2vw,34px);
  font-weight:700;
  line-height:1.24;
  letter-spacing:-.01em;
  color:var(--c-ink);
  margin-bottom:12px;
}
.section-head p{color:var(--c-muted);font-size:15.5px;line-height:1.8;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--c-primary-light);
  font-weight:600;
  margin-bottom:12px;
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--c-accent);
}

/* ============ 下载入口双栏卡 ============ */
.entry-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.entry-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-block);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.entry-media{
  height:172px;
  background:var(--c-mist);
  overflow:hidden;
}
.entry-media img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.entry-body{
  padding:24px;
  display:flex;
  flex-direction:column;
  gap:14px;
  flex:1;
}
.entry-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.entry-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:12px;
  background:rgba(43,30,99,.08);
  color:var(--c-primary);
}
.entry-card h3{
  font-size:20px;
  font-weight:600;
  line-height:1.4;
  color:var(--c-ink);
}
.entry-card p{color:var(--c-muted);font-size:15px;line-height:1.8;}
.entry-list{display:flex;flex-direction:column;gap:10px;}
.entry-list li{
  position:relative;
  padding-left:22px;
  font-size:14.5px;
  color:var(--c-muted);
  line-height:1.7;
}
.entry-list li::before{
  content:"";
  position:absolute;
  left:2px;
  top:9px;
  width:8px;
  height:8px;
  border-radius:50%;
  background:rgba(46,211,183,.35);
  box-shadow:inset 0 0 0 2px var(--c-accent);
}
.entry-meta{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--c-soft);
  font-variant-numeric:tabular-nums;
  padding-top:4px;
  test-decoration:none;
}
.entry-foot{margin-top:auto;padding-top:8px;display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 平台支持条 ============ */
.platform-bar{
  margin-top:28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px 26px;
  padding:18px 24px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
}
.platform-bar .pb-label{
  font-size:13px;
  color:var(--c-soft);
  letter-spacing:.04em;
}
.platform-item{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--c-ink);
  font-variant-numeric:tabular-nums;
}
.platform-item i{
  display:inline-block;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--c-accent);
  box-shadow:0 0 0 3px rgba(46,211,183,.18);
}
.platform-item b{font-weight:600;}

/* ============ 规格对照 ============ */
.spec-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.spec-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-block);
  padding:28px;
  box-shadow:var(--shadow-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.spec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.spec-card.is-recommended{
  border-color:rgba(46,211,183,.55);
  box-shadow:0 12px 30px rgba(46,211,183,.14);
}
.spec-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:8px;
}
.spec-head h3{font-size:20px;font-weight:600;color:var(--c-ink);}
.spec-note{font-size:14px;color:var(--c-muted);line-height:1.75;margin-bottom:18px;}
.spec-dl{
  display:grid;
  grid-template-columns:104px minmax(0,1fr);
  margin:0;
}
.spec-dl dt,
.spec-dl dd{
  padding:14px 0;
  border-top:1px solid var(--c-line);
  font-size:14.5px;
  line-height:1.6;
}
.spec-dl dt{color:var(--c-soft);}
.spec-dl dd{color:var(--c-ink);margin:0;font-variant-numeric:tabular-nums;}
.spec-foot{
  margin-top:20px;
  font-size:13px;
  color:var(--c-soft);
  line-height:1.7;
}

/* ============ FAQ ============ */
.faq-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
  align-items:start;
}
.faq-item{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  transition:box-shadow .18s ease-out,border-color .18s ease-out;
}
.faq-item:hover{box-shadow:var(--shadow-2);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:56px;
  padding:14px 20px;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  line-height:1.55;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-sign{
  position:relative;
  flex:0 0 auto;
  width:22px;
  height:22px;
  border-radius:50%;
  background:rgba(43,30,99,.08);
  transition:transform .2s ease-out,background .2s ease-out;
}
.faq-sign::before,
.faq-sign::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  border-radius:2px;
  background:var(--c-primary);
  transform:translate(-50%,-50%);
}
.faq-sign::before{width:11px;height:2px;}
.faq-sign::after{width:2px;height:11px;}
.faq-item[open] .faq-sign{transform:rotate(45deg);background:rgba(46,211,183,.2);}
.faq-item[open] .faq-sign::before,
.faq-item[open] .faq-sign::after{background:#0F6E5E;}
.faq-body{
  border-top:1px dashed var(--c-line);
  padding:14px 20px 18px;
  font-size:15px;
  line-height:1.8;
  color:var(--c-muted);
}
.faq-item[open]{border-color:rgba(43,30,99,.22);}

/* ============ CTA 区块 ============ */
.cta-block{
  border-radius:24px;
  padding:44px 28px;
  text-align:center;
  overflow:hidden;
}
.cta-block h2{
  font-size:clamp(24px,3.2vw,34px);
  font-weight:700;
  line-height:1.25;
  margin-bottom:14px;
}
.cta-block p{
  color:rgba(255,255,255,.8);
  font-size:15.5px;
  line-height:1.8;
  max-width:640px;
  margin:0 auto 26px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:12px;
}
.cta-fine{
  margin-top:20px;
  font-size:13px;
  color:rgba(255,255,255,.6);
  font-variant-numeric:tabular-nums;
}

/* ============ 反馈入口 ============ */
.feedback{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:28px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-block);
  box-shadow:var(--shadow-1);
}
.feedback h3{font-size:19px;font-weight:600;color:var(--c-ink);margin-bottom:6px;}
.feedback p{font-size:14.5px;color:var(--c-muted);line-height:1.75;}
.feedback .fb-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.mail-link{
  font-family:var(--font-mono);
  font-size:13.5px;
  color:var(--c-primary-light);
  font-variant-numeric:tabular-nums;
}

/* ============ 页脚 ============ */
.site-footer{
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:#fff;
  margin-bottom:14px;
}
.footer-text{
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.7);
  max-width:340px;
}
.footer-platforms{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:18px;
}
.footer-platforms span{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  color:rgba(255,255,255,.85);
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.16);
}
.footer-h{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-list{display:flex;flex-direction:column;gap:12px;}
.footer-list a{
  font-size:14px;
  color:rgba(255,255,255,.7);
  text-decoration:none;
  transition:color .18s ease-out;
}
.footer-list a:hover{color:#fff;text-decoration:none;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:20px 0;
  border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;
  color:rgba(255,255,255,.6);
}
.footer-bottom .right{font-variant-numeric:tabular-nums;}

/* ============ 响应式 ============ */
@media(max-width:1279px){
  .entry-grid{gap:20px;}
}
@media(max-width:1023px){
  .main-nav{display:none;}
  .search-box{display:none;}
  .header-actions .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .mobile-drawer{display:block;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-text{max-width:none;}
}
@media(max-width:767px){
  .entry-grid{grid-template-columns:1fr;}
  .spec-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .banner-lead{font-size:15px;}
  .section-head{margin-bottom:28px;}
  .entry-media{height:150px;}
  .spec-card{padding:22px;}
  .spec-dl{grid-template-columns:88px minmax(0,1fr);}
  .feedback{padding:22px;}
  .feedback .fb-actions{width:100%;}
  .cta-block{padding:36px 20px;}
}
@media(max-width:519px){
  .brand{font-size:15px;}
  .header-inner{min-height:56px;}
  .entry-body{padding:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .spec-dl{grid-template-columns:1fr;gap:0;}
  .spec-dl dt{padding-bottom:2px;border-top:1px solid var(--c-line);}
  .spec-dl dd{padding-top:0;border-top:none;}
  .cta-actions .btn{width:100%;}
  .platform-bar{padding:16px 18px;}
}