/* roulang page: index */
:root{
  --brand:#6C4CF1;
  --brand-hover:#5B3BE0;
  --brand-soft:#F3EEFB;
  --brand-line:rgba(108,76,241,.16);
  --accent:#FF7A45;
  --accent-hover:#F2682F;
  --accent-soft:#FFF1E8;
  --green:#12B886;
  --bg:#FBF8F4;
  --bg-alt:#F3EEFB;
  --ink:#170F2E;
  --text:#171226;
  --text-2:#5B5470;
  --text-3:#8B84A3;
  --line:#E9E2F7;
  --grad:linear-gradient(135deg,#6C4CF1 0%,#A855F7 48%,#FF7A45 100%);
  --r-lg:26px;
  --r-md:20px;
  --r-sm:14px;
  --shadow-1:0 10px 28px rgba(23,18,38,.07);
  --shadow-2:0 20px 44px rgba(23,18,38,.13);
  --container:1200px;
  --font:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC',system-ui,-apple-system,'Segoe UI',sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  padding-bottom:calc(60px + env(safe-area-inset-bottom));
}
@media (min-width:1024px){body{padding-bottom:0}}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}

/* 通用文本 */
.clamp-1{display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sec-title{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;color:var(--text)}
.sec-desc{font-size:16px;line-height:1.85;color:var(--text-2);max-width:780px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:34px}
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.bg-alt{background:var(--bg-alt)}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,248,244,.88);
  border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.94);
  box-shadow:0 6px 20px rgba(23,18,38,.07);
  border-bottom-color:var(--line);
  backdrop-filter:blur(10px);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:56px}
@media (min-width:1024px){.nav-wrap{height:68px}}
.logo-link{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:12px;background:var(--grad);
  color:#fff;font-size:17px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 18px rgba(108,76,241,.32);
  flex-shrink:0;
}
.logo-text{font-size:17px;font-weight:700;color:var(--text);white-space:nowrap}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:9px 13px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text-2);
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:'';position:absolute;left:12px;right:12px;bottom:0;height:3px;
  border-radius:999px;background:var(--grad);
}
.icon-btn{
  width:44px;height:44px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--text-2);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand-line);background:var(--brand-soft)}
.icon-btn svg{width:20px;height:20px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 26px;border-radius:999px;
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform .22s ease-out,box-shadow .22s ease-out,background-color .22s ease,color .22s ease,filter .22s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 26px rgba(108,76,241,.28)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 18px 34px rgba(108,76,241,.34);color:#fff}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{background:transparent;border-color:var(--brand-line);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand)}
.btn-ghost:active{transform:translateY(1px)}
.btn-light{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.34);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.2);color:#fff}
.btn:focus-visible,.nav-link:focus-visible,a:focus-visible,button:focus-visible,.tab-item:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;border-radius:12px;
}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--brand);
}
.text-link svg{width:16px;height:16px;transition:transform .22s ease-out}
.text-link:hover{text-decoration:underline}
.text-link:hover svg{transform:translateX(3px)}

/* 标签与徽章 */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;
}
.chip-accent{background:var(--accent-soft);color:#C2410C}
.badge-data{
  display:inline-flex;align-items:baseline;gap:6px;
  padding:7px 14px;border-radius:999px;
  background:#FFF0E8;color:#C2410C;
  font-size:13px;font-weight:600;font-variant-numeric:tabular-nums;
}
.badge-data b{font-size:15px;font-weight:700}
.badge-soft{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:999px;
  background:rgba(18,184,134,.12);color:#0B8F68;
  font-size:12px;font-weight:600;font-variant-numeric:tabular-nums;
}

/* 卡片 */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);
  transition:transform .22s ease-out,box-shadow .22s ease-out;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.card-cover{overflow:hidden;border-radius:16px;background:var(--brand-soft)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
.card:hover .card-cover img{transform:scale(1.03)}
.card-title{font-size:19px;line-height:1.45;font-weight:600;color:var(--text)}
.card-card:hover .card-title{color:var(--brand)}
.card-meta{font-size:13.5px;color:var(--text-3);font-variant-numeric:tabular-nums}

/* Hero */
.hero{position:relative;overflow:hidden;background:var(--bg);padding:40px 0 52px}
@media (min-width:1024px){.hero{padding:72px 0 92px}}
.hero-glow{
  position:absolute;width:640px;height:640px;top:-240px;right:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.22) 0%,rgba(108,76,241,0) 68%);
  pointer-events:none;
}
.hero-dots{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(23,18,38,.12) 1px,transparent 1px);
  background-size:26px 26px;
}
.hero-inner{position:relative;display:grid;gap:40px;align-items:center}
@media (min-width:1024px){.hero-inner{grid-template-columns:1.05fr .95fr;gap:48px}}
.hero-title{
  font-size:clamp(30px,4.4vw,50px);line-height:1.22;font-weight:700;color:var(--text);
  margin:18px 0 18px;
}
.hero-sub{font-size:17px;line-height:1.8;color:var(--text-2);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 26px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.hero-visual{
  position:relative;border-radius:26px;overflow:hidden;aspect-ratio:16/10;
  box-shadow:var(--shadow-2);border:1px solid var(--line);background:var(--brand-soft);
}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual-glow{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at 80% 16%,rgba(255,122,69,.34) 0%,rgba(255,122,69,0) 58%),
    radial-gradient(circle at 10% 88%,rgba(108,76,241,.34) 0%,rgba(108,76,241,0) 62%);
}

/* 三步上手 */
.steps{display:grid;gap:22px}
@media (min-width:1024px){.steps{grid-template-columns:repeat(3,1fr);gap:28px}}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px 24px;box-shadow:var(--shadow-1);
  transition:transform .22s ease-out,box-shadow .22s ease-out;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:13px;
  background:var(--brand-soft);color:var(--brand);
  font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;
  margin-bottom:18px;
}
.step h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--text);margin-bottom:10px}
.step p{font-size:15.5px;line-height:1.8;color:var(--text-2);margin-bottom:16px}
@media (min-width:1024px){
  .step:not(:last-child)::after{
    content:'';position:absolute;top:46px;right:-24px;width:18px;height:2px;
    border-radius:2px;background:linear-gradient(90deg,rgba(108,76,241,.5),rgba(255,122,69,.5));
  }
}

/* 频道横滚 */
.channel-scroll{
  display:flex;gap:20px;overflow-x:auto;padding:4px 4px 20px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.channel-scroll::-webkit-scrollbar{height:6px}
.channel-scroll::-webkit-scrollbar-track{background:rgba(108,76,241,.08);border-radius:999px}
.channel-scroll::-webkit-scrollbar-thumb{background:rgba(108,76,241,.3);border-radius:999px}
.channel-card{
  flex:0 0 80%;max-width:320px;scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s ease-out,box-shadow .22s ease-out;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.channel-card .card-cover{border-radius:0;aspect-ratio:16/9}
.channel-body{padding:18px 20px 22px}
.channel-card h3{font-size:17px;font-weight:600;color:var(--text);margin:12px 0 8px}
.channel-card p{font-size:14px;line-height:1.7;color:var(--text-2)}
@media (min-width:768px){.channel-card{flex:0 0 45%}}
@media (min-width:1024px){.channel-card{flex:0 0 31.4%}}

/* 案例证明布局 */
.case-grid{display:grid;gap:22px}
@media (min-width:1024px){.case-grid{grid-template-columns:1.35fr 1fr}}
.case-main{padding:22px;display:flex;flex-direction:column}
.case-main .card-cover{aspect-ratio:16/9;margin-bottom:20px}
.case-main h3{font-size:22px;line-height:1.45;font-weight:600;margin-bottom:12px}
.case-main p{font-size:15.5px;line-height:1.85;color:var(--text-2);margin-bottom:18px}
.case-side{display:grid;gap:22px;align-content:start}
.case-mini{display:flex;gap:16px;padding:16px;align-items:center}
.case-mini .card-cover{flex:0 0 118px;aspect-ratio:4/3;border-radius:14px}
.case-mini h3{font-size:16.5px;line-height:1.45;font-weight:600;margin:8px 0 6px}

/* 内容列表 */
.list-grid{display:grid;gap:22px}
@media (min-width:1024px){.list-grid.cols-2{grid-template-columns:1.15fr .85fr}}
.list-lead{padding:22px}
.list-lead .card-cover{aspect-ratio:16/9;margin-bottom:20px}
.list-lead h3{font-size:21px;line-height:1.45;font-weight:600;margin:12px 0 10px}
.list-lead p{font-size:15.5px;line-height:1.85;color:var(--text-2);margin-bottom:18px}
.list-stack{display:grid;gap:16px;align-content:start}
.list-item{display:flex;gap:14px;padding:14px;align-items:center}
.list-item .card-cover{flex:0 0 104px;aspect-ratio:16/11;border-radius:12px}
.list-item h3{font-size:16px;line-height:1.45;font-weight:600;margin:8px 0 4px}
.list-item .card-meta{margin-top:4px}
.list-item p{font-size:13.5px;line-height:1.7;color:var(--text-2)}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;background:#fff;border:1px dashed var(--brand-line);border-radius:var(--r-md);
  text-align:center;padding:32px 20px;
}
.empty-state svg{width:40px;height:40px;color:var(--brand)}
.empty-state p{font-size:15.5px;color:var(--text-2)}
.empty-links{display:flex;gap:18px;flex-wrap:wrap;justify-content:center}

/* FAQ */
.faq-list{display:grid;gap:14px;max-width:920px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  overflow:hidden;transition:box-shadow .22s ease-out;
}
.faq-item:hover{box-shadow:var(--shadow-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16.5px;font-weight:600;line-height:1.6;color:var(--text);
  transition:background-color .22s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;line-height:1;
  transition:transform .24s ease,background-color .24s ease,color .24s ease;
}
.faq-item.is-open .faq-q{background:var(--brand-soft);border-left:3px solid var(--brand)}
.faq-item.is-open .faq-icon{background:var(--brand);color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a-inner{padding:6px 22px 22px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* CTA 大卡 */
.cta-block{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#241747 0%,#170F2E 56%,#2C1B58 100%);
  border-radius:var(--r-lg);padding:40px 26px;color:#fff;
  display:grid;gap:22px;
  box-shadow:0 24px 54px rgba(23,15,46,.32);
}
@media (min-width:1024px){
  .cta-block{padding:56px 52px;grid-template-columns:1.4fr 1fr;align-items:center;gap:32px}
}
.cta-block::after{
  content:'';position:absolute;width:420px;height:420px;right:-120px;top:-160px;border-radius:50%;
  background:radial-gradient(circle,rgba(168,85,247,.45) 0%,rgba(168,85,247,0) 68%);
  pointer-events:none;
}
.cta-block h2{font-size:clamp(23px,2.7vw,32px);line-height:1.32;font-weight:700;margin-bottom:12px}
.cta-block p{font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.76)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1}
.cta-note{font-size:14px;color:rgba(255,255,255,.62);grid-column:1/-1;position:relative;z-index:1}

/* 页脚 */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{font-size:17px;font-weight:700;color:#fff}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin-top:16px;max-width:340px}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-list{display:grid;gap:11px}
.footer-list a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-list a:hover{color:#fff}
.footer-list li{font-size:14px;color:rgba(255,255,255,.68)}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:10px 24px;
  align-items:center;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55);
}

/* 移动端底部 Tab */
.tab-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px rgba(23,18,38,.07);
}
.tab-item{
  position:relative;flex:1;height:60px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:12px;color:var(--text-3);transition:color .2s ease;
}
.tab-item svg{width:22px;height:22px}
.tab-item:hover{color:var(--brand)}
.tab-item.is-active{color:var(--brand);font-weight:600}
.tab-item.is-active::before{
  content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:34px;height:3px;border-radius:999px;background:var(--grad);
}
@media (min-width:1024px){.tab-bar{display:none}}

/* roulang page: article */
:root{
    --brand:#6C4CF1;
    --brand-hover:#5B3BE0;
    --brand-soft:#F3EEFB;
    --brand-line:rgba(108,76,241,.16);
    --accent:#FF7A45;
    --accent-hover:#F2682F;
    --accent-soft:#FFF1E8;
    --accent-text:#C2410C;
    --ok:#12B886;
    --bg:#FBF8F4;
    --bg-alt:#F3EEFB;
    --ink:#171226;
    --ink-2:#5B5470;
    --ink-3:#8B84A3;
    --line:#E9E2F7;
    --dark:#170F2E;
    --grad:linear-gradient(135deg,#6C4CF1 0%,#A855F7 48%,#FF7A45 100%);
    --r-lg:26px;
    --r-md:20px;
    --r-sm:14px;
    --shadow-1:0 10px 28px rgba(23,18,38,.07);
    --shadow-2:0 20px 44px rgba(23,18,38,.13);
    --container:1200px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC',system-ui,-apple-system,'Segoe UI',sans-serif;
    font-size:16px;
    line-height:1.85;
  }
  img{max-width:100%;display:block}
  a{color:var(--brand);text-decoration:none;transition:color .2s ease}
  a:hover{color:var(--brand-hover)}
  button{font-family:inherit}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
  @media (min-width:1024px){ .container{padding:0 32px} }

  /* header */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(251,248,244,.92);
    border-bottom:1px solid transparent;
    transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
  }
  .site-header.is-scrolled{
    background:rgba(255,255,255,.86);
    backdrop-filter:blur(10px);
    border-bottom-color:var(--line);
    box-shadow:0 8px 24px rgba(23,18,38,.06);
  }
  .nav-wrap{height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}
  @media (max-width:1023px){ .nav-wrap{height:56px} }
  .logo-link{display:flex;align-items:center;gap:10px;color:var(--ink)}
  .logo-link:hover{color:var(--ink)}
  .logo-mark{
    width:36px;height:36px;flex:0 0 36px;border-radius:12px;
    background:var(--grad);color:#fff;font-weight:700;font-size:18px;
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 8px 18px rgba(108,76,241,.32);
  }
  .logo-text{font-size:17px;font-weight:700;white-space:nowrap}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
    font-size:15px;font-weight:500;color:var(--ink-2);border-radius:999px;
    transition:color .2s ease,background .2s ease;
  }
  .nav-link:hover{color:var(--brand);background:var(--brand-soft)}
  .nav-link.active{color:var(--brand);font-weight:600}
  .nav-link.active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;border-radius:999px;background:var(--grad);
  }
  .icon-btn{
    width:40px;height:40px;border-radius:999px;border:1px solid var(--line);
    background:#fff;color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;
    transition:color .2s ease,border-color .2s ease,transform .2s ease;
  }
  .icon-btn svg{width:20px;height:20px}
  .icon-btn:hover{color:var(--brand);border-color:var(--brand-line);transform:translateY(-1px)}

  /* buttons */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;
    border:1px solid transparent;cursor:pointer;transition:all .22s ease;white-space:nowrap;
  }
  .btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 26px rgba(108,76,241,.28)}
  .btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:0 18px 36px rgba(108,76,241,.34);filter:brightness(1.05)}
  .btn-primary:active{transform:translateY(0);filter:brightness(.94)}
  .btn-ghost{background:transparent;border-color:var(--brand-line);color:var(--brand)}
  .btn-ghost:hover{background:var(--brand-soft);color:var(--brand-hover)}
  .btn-ghost:active{filter:brightness(.96)}
  .btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed}
  .text-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand)}
  .text-link::after{content:"→";transition:transform .2s ease}
  .text-link:hover::after{transform:translateX(3px)}
  .text-link:hover{text-decoration:underline}

  /* chips & badges */
  .chip{
    display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
    font-size:13px;font-weight:600;background:var(--brand-soft);color:var(--brand);border:1px solid var(--brand-line);
  }
  .chip-accent{background:var(--accent-soft);color:var(--accent-text);border-color:rgba(255,122,69,.22)}
  .badge-data{
    display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
    background:var(--accent-soft);color:var(--accent-text);font-size:12.5px;font-weight:600;
    font-variant-numeric:tabular-nums;
  }
  .badge-ok{background:rgba(18,184,134,.12);color:#0B7A5A}

  /* cards */
  .card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
    box-shadow:var(--shadow-1);overflow:hidden;transition:transform .22s ease-out,box-shadow .22s ease-out;
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
  .card-img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .22s ease-out}
  .card:hover .card-img{transform:scale(1.03)}

  /* article layout */
  .page-shell{padding:36px 0 0}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-3)}
  .breadcrumb a{color:var(--ink-2)}
  .breadcrumb a:hover{color:var(--brand)}
  .breadcrumb .sep{color:var(--ink-3)}
  .breadcrumb .current{color:var(--ink-3);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

  .article-head{margin-top:22px}
  .article-h1{
    font-size:clamp(24px,3.4vw,38px);line-height:1.3;font-weight:700;margin:14px 0 0;
    letter-spacing:0;max-width:900px;
  }
  .article-meta{margin-top:16px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--ink-2)}
  .article-meta .dot{color:var(--ink-3)}

  .article-wrap{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;margin-top:26px}
  @media (min-width:1024px){
    .article-wrap{grid-template-columns:minmax(0,1fr) 300px;gap:44px;align-items:start}
  }
  .article-body{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
    box-shadow:var(--shadow-1);padding:26px 22px 32px;
  }
  @media (min-width:768px){ .article-body{padding:38px 42px 44px} }
  .article-inner{max-width:800px;margin:0 auto}
  .prose-cn{font-size:16.5px;line-height:1.9;color:#241C3D}
  .prose-cn > * + *{margin-top:20px}
  .prose-cn h2{
    position:relative;font-size:clamp(20px,2.2vw,25px);line-height:1.4;font-weight:700;
    margin:40px 0 0;padding-left:14px;color:var(--ink);
  }
  .prose-cn h2::before{
    content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--grad);
  }
  .prose-cn h3{font-size:18.5px;font-weight:600;margin:30px 0 0;color:var(--ink)}
  .prose-cn p{margin:0}
  .prose-cn ul,.prose-cn ol{margin:0;padding-left:22px}
  .prose-cn li + li{margin-top:8px}
  .prose-cn blockquote{
    margin:24px 0;padding:16px 20px;background:var(--brand-soft);
    border-left:4px solid var(--brand);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink-2);
  }
  .prose-cn img{border-radius:16px;margin:24px auto 0;box-shadow:var(--shadow-1)}
  .prose-cn figcaption,.prose-cn .img-cap{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}
  .prose-cn code{
    background:#F4F1FA;border:1px solid var(--line);border-radius:8px;
    padding:2px 7px;font-size:14px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  }
  .prose-cn pre{
    background:#F7F5FB;border:1px solid var(--line);border-radius:var(--r-sm);
    padding:16px 18px;overflow-x:auto;font-size:14px;
  }
  .prose-cn pre code{background:none;border:0;padding:0}
  .prose-cn table{width:100%;border-collapse:separate;border-spacing:0;border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;font-size:15px}
  .prose-cn thead th{background:var(--brand-soft);color:var(--ink);font-weight:600;text-align:left;padding:12px 14px}
  .prose-cn tbody td{padding:12px 14px;border-top:1px solid var(--line);color:var(--ink-2)}
  .prose-cn a{border-bottom:1px solid var(--brand-line)}

  .empty-box{
    min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
    text-align:center;color:var(--ink-2);
  }
  .empty-box svg{width:40px;height:40px;color:var(--ink-3)}
  .empty-actions{display:flex;flex-wrap:wrap;gap:18px;justify-content:center;margin-top:4px}

  .article-foot{margin-top:34px;padding-top:24px;border-top:1px solid var(--line)}
  .tag-row{display:flex;flex-wrap:wrap;gap:10px}
  .icon-row{display:flex;gap:10px;margin-top:18px}
  .nav-prev-next{
    margin-top:26px;display:grid;gap:12px;grid-template-columns:1fr;
  }
  @media (min-width:768px){ .nav-prev-next{grid-template-columns:1fr 1fr} }
  .pn-card{
    border:1px solid var(--line);border-radius:var(--r-sm);padding:14px 16px;background:var(--bg);
    font-size:14.5px;color:var(--ink-2);display:block;
  }
  .pn-card strong{display:block;font-size:13px;color:var(--ink-3);font-weight:600;margin-bottom:4px}

  /* sidebar */
  .side-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
    box-shadow:var(--shadow-1);padding:20px;
  }
  .side-card + .side-card{margin-top:20px}
  .side-title{font-size:16px;font-weight:700;margin:0 0 12px}
  .side-list{list-style:none;margin:0;padding:0}
  .side-list li + li{margin-top:10px}
  .side-link{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink-2);line-height:1.6}
  .side-link:hover{color:var(--brand)}
  .side-link .idx{
    flex:0 0 22px;height:22px;border-radius:8px;background:var(--brand-soft);color:var(--brand);
    font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:2px;
  }

  .rel-card{
    display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-sm);padding:12px;transition:transform .22s ease-out,box-shadow .22s ease-out;
  }
  .rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
  .rel-card img{width:96px;height:68px;object-fit:cover;border-radius:10px;flex:0 0 96px}

  .cta-strip{
    margin-top:40px;border:1px solid var(--brand-line);border-radius:var(--r-md);background:#fff;
    box-shadow:var(--shadow-1);padding:22px 24px;display:flex;flex-wrap:wrap;gap:18px;
    align-items:center;justify-content:space-between;
  }
  .cta-strip p{margin:4px 0 0;font-size:14.5px;color:var(--ink-2);max-width:620px}

  .progress-bar{position:fixed;top:0;left:0;height:3px;width:0;background:var(--grad);z-index:80}

  /* footer */
  .site-footer{margin-top:88px;background:var(--dark);color:rgba(255,255,255,.72);padding:56px 0 22px}
  .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:1.4fr 1fr 1fr 1.1fr} }
  .footer-brand{color:#fff;font-size:17px;font-weight:700}
  .footer-desc{font-size:14px;line-height:1.8;margin:14px 0 0;max-width:340px;color:rgba(255,255,255,.66)}
  .footer-title{color:#fff;font-size:15px;font-weight:600;margin:0 0 14px}
  .footer-list{list-style:none;margin:0;padding:0;font-size:14px}
  .footer-list li + li{margin-top:10px}
  .footer-list a{color:rgba(255,255,255,.72)}
  .footer-list a:hover{color:#fff}
  .footer-bottom{
    margin-top:36px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6);
  }

  /* mobile tab bar */
  .tabbar{
    position:fixed;left:0;right:0;bottom:0;z-index:70;background:rgba(255,255,255,.97);
    border-top:1px solid var(--line);box-shadow:0 -8px 24px rgba(23,18,38,.07);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .tabbar-inner{display:grid;grid-template-columns:repeat(5,1fr)}
  .tab-item{
    position:relative;height:60px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    font-size:12px;color:var(--ink-3);min-width:44px;
  }
  .tab-item svg{width:22px;height:22px}
  .tab-item.active{color:var(--brand);font-weight:600}
  .tab-item.active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:26px;height:3px;border-radius:999px;background:var(--grad);
  }
  @media (min-width:1024px){ .tabbar{display:none} }
  @media (max-width:1023px){ body{padding-bottom:76px} }

/* roulang page: category1 */
:root{
  --brand:#6C4CF1;
  --brand-hover:#5B3BE0;
  --brand-soft:#F3EEFB;
  --brand-line:rgba(108,76,241,.16);
  --accent:#FF7A45;
  --accent-hover:#F2682F;
  --accent-soft:#FFF1E8;
  --accent-text:#C2410C;
  --grad:linear-gradient(135deg,#6C4CF1 0%,#A855F7 48%,#FF7A45 100%);
  --green:#12B886;
  --bg:#FBF8F4;
  --bg-alt:#F3EEFB;
  --dark:#170F2E;
  --text:#171226;
  --text-2:#5B5470;
  --text-3:#8B84A3;
  --line:#E9E2F7;
  --r-lg:26px;
  --r-md:20px;
  --r-sm:14px;
  --sh:0 10px 28px rgba(23,18,38,.07);
  --sh-hover:0 20px 44px rgba(23,18,38,.13);
  --maxw:1200px;
}
*,*::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,-apple-system,'Segoe UI',sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--bg);
  border-bottom:1px solid transparent;
  transition:background 240ms ease,box-shadow 240ms ease,border-color 240ms ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
  box-shadow:0 6px 24px rgba(23,18,38,.07);
}
.nav-wrap{height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px}
@media (max-width:1023px){.nav-wrap{height:56px}}
.logo-link{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:12px;
  background:var(--grad);color:#fff;
  display:grid;place-items:center;
  font-weight:700;font-size:17px;line-height:1;
  box-shadow:0 6px 16px rgba(108,76,241,.28);
}
.logo-text{font-weight:700;font-size:17px;color:var(--text);white-space:nowrap}
@media (max-width:420px){.logo-text{font-size:15px}}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:9px 15px;border-radius:999px;
  font-size:15px;color:var(--text-2);
  transition:color 200ms ease,background 200ms ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand);font-weight:600;background:var(--brand-soft)}
.nav-link.is-active::after{
  content:'';position:absolute;left:50%;bottom:-2px;transform:translateX(-50%);
  width:26px;height:3px;border-radius:999px;background:var(--grad);
}
.icon-btn{
  width:42px;height:42px;border-radius:999px;
  display:inline-grid;place-items:center;
  border:1px solid var(--line);background:#fff;color:var(--text-2);
  transition:color 200ms ease,border-color 200ms ease,box-shadow 200ms ease,transform 200ms ease;
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand-line);box-shadow:var(--sh);transform:translateY(-1px)}
.icon-btn svg{width:20px;height:20px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;
  transition:transform 200ms ease,box-shadow 200ms ease,background 200ms ease,color 200ms ease,border-color 200ms ease,filter 200ms ease;
}
.btn-primary{
  background:var(--grad);color:#fff;
  box-shadow:0 12px 26px rgba(108,76,241,.28);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 18px 36px rgba(108,76,241,.34)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{
  background:transparent;color:var(--brand);border-color:var(--brand-line);
}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-light{
  background:#fff;color:var(--dark);border-color:transparent;
}
.btn-light:hover{transform:translateY(-1px);box-shadow:0 16px 32px rgba(0,0,0,.22)}
.btn-outline-light{
  background:transparent;color:#fff;border-color:rgba(255,255,255,.42);
}
.btn-outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-sm{padding:10px 20px;font-size:14px}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--brand);font-size:15px;font-weight:600;
}
.text-link svg{width:16px;height:16px;transition:transform 200ms ease}
.text-link:hover{text-decoration:underline}
.text-link:hover svg{transform:translateX(3px)}

/* ---------- 通用区块 ---------- */
.section{padding:64px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.section-tight{padding:52px 0}
@media (min-width:1024px){.section-tight{padding:76px 0}}
.bg-alt{background:var(--bg-alt)}
.sec-head{max-width:780px;margin-bottom:40px}
.sec-title{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;margin:0 0 14px;color:var(--text)}
.sec-desc{font-size:16px;line-height:1.85;color:var(--text-2);margin:0}
.body-text{font-size:16px;line-height:1.85;color:var(--text-2);margin:0 0 18px}
.body-text:last-child{margin-bottom:0}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;
  font-size:12.5px;font-weight:600;
  background:var(--brand-soft);color:var(--brand);
}
.badge-data{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 13px;border-radius:999px;
  font-size:12.5px;font-weight:600;
  background:var(--accent-soft);color:var(--accent-text);
  font-variant-numeric:tabular-nums;
  white-space:nowrap;
}
.badge-green{background:rgba(18,184,134,.12);color:#0B7A5A}
.badge-invert{background:rgba(255,255,255,.12);color:#FFD9C2}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13.5px;color:var(--text-3);
  padding:22px 0 0;
}
.breadcrumb a{color:var(--text-2);transition:color 200ms ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .cur{color:var(--text-3)}
.breadcrumb .sep{color:#C7BFDE}

/* ---------- 分类 Hero（窄版） ---------- */
.cat-hero{position:relative;overflow:hidden;padding:0 0 56px}
@media (min-width:1024px){.cat-hero{padding:0 0 76px}}
.cat-hero::before{
  content:'';position:absolute;top:-180px;right:-120px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.20) 0%,rgba(255,122,69,.10) 42%,rgba(251,248,244,0) 70%);
  pointer-events:none;
}
.cat-hero::after{
  content:'';position:absolute;inset:0;
  background-image:radial-gradient(rgba(108,76,241,.10) 1px,transparent 1px);
  background-size:26px 26px;
  opacity:.10;pointer-events:none;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,0));
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,0));
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1fr;gap:32px;
  align-items:center;padding-top:26px;
}
@media (min-width:900px){
  .hero-grid{grid-template-columns:1.05fr .95fr;gap:44px;padding-top:36px}
}
.hero-title{
  font-size:clamp(30px,4.4vw,46px);line-height:1.22;font-weight:700;
  margin:16px 0 16px;color:var(--text);
}
.hero-sub{font-size:16.5px;line-height:1.8;color:var(--text-2);margin:0 0 28px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.hero-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:16/10;box-shadow:var(--sh);
  border:1px solid var(--line);background:var(--bg-alt);
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(150deg,rgba(108,76,241,.22) 0%,rgba(255,122,69,.12) 55%,rgba(23,15,46,.16) 100%);
  pointer-events:none;
}

/* ---------- 分栏导语 ---------- */
.split-grid{display:grid;grid-template-columns:1fr;gap:34px;align-items:center}
@media (min-width:900px){.split-grid{grid-template-columns:1fr 1fr;gap:48px}}
.split-media{
  border-radius:var(--r-lg);overflow:hidden;aspect-ratio:4/3;
  border:1px solid var(--line);box-shadow:var(--sh);background:#fff;
}
.split-media img{width:100%;height:100%;object-fit:cover}
.check-list{list-style:none;margin:22px 0 0;padding:0}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px dashed var(--line);
}
.check-list li:last-child{border-bottom:0}
.check-mark{
  flex:0 0 26px;width:26px;height:26px;border-radius:9px;
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;margin-top:4px;
}
.check-mark svg{width:14px;height:14px}
.check-title{font-size:16px;font-weight:600;color:var(--text);margin:0 0 4px}
.check-desc{font-size:14.5px;line-height:1.75;color:var(--text-2);margin:0}

/* ---------- 时间轴 ---------- */
.timeline{margin-top:8px}
.tl-item{
  position:relative;
  display:grid;grid-template-columns:46px 1fr;gap:18px;
  padding-bottom:24px;
}
.tl-item:not(:last-child)::before{
  content:'';position:absolute;left:22px;top:48px;bottom:0;width:2px;
  background:linear-gradient(180deg,rgba(108,76,241,.45),rgba(255,122,69,.30));
  border-radius:2px;
}
.tl-num{
  width:46px;height:46px;border-radius:16px;
  display:grid;place-items:center;
  font-weight:700;font-size:15px;
  background:#fff;color:var(--brand);
  border:1px solid var(--brand-line);
  box-shadow:var(--sh);
  font-variant-numeric:tabular-nums;
  position:relative;z-index:2;
}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 24px;box-shadow:var(--sh);
  transition:transform 220ms ease-out,box-shadow 220ms ease-out;
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.tl-title{font-size:18px;font-weight:600;color:var(--text);margin:0 0 8px}
.tl-text{font-size:15px;line-height:1.8;color:var(--text-2);margin:0 0 10px}
.tl-meta{font-size:13.5px;color:var(--text-3);margin:0}

/* ---------- 卡片网格 ---------- */
.grid-2{display:grid;grid-template-columns:1fr;gap:22px}
@media (min-width:768px){.grid-2{grid-template-columns:repeat(2,1fr)}}
.card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh);overflow:hidden;
  transition:transform 220ms ease-out,box-shadow 220ms ease-out;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.card-cover{aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform 220ms ease-out}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:18px;font-weight:600;line-height:1.45;color:var(--text);margin:0}
.card-text{
  font-size:14.5px;line-height:1.8;color:var(--text-2);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:10px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13.5px;color:var(--text-3);
}

/* ---------- 场景 ---------- */
.scene-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:768px){.scene-grid{grid-template-columns:repeat(2,1fr)}}
.scene-item{
  display:flex;gap:16px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 24px;box-shadow:var(--sh);
  transition:transform 220ms ease-out,box-shadow 220ms ease-out,border-color 220ms ease-out;
}
.scene-item:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--brand-line)}
.scene-icon{
  flex:0 0 44px;width:44px;height:44px;border-radius:14px;
  display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);
}
.scene-icon svg{width:22px;height:22px}
.scene-title{font-size:16.5px;font-weight:600;color:var(--text);margin:0 0 6px}
.scene-text{font-size:14.5px;line-height:1.78;color:var(--text-2);margin:0}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-md);
  background:#fff;margin-bottom:14px;overflow:hidden;
  transition:border-color 220ms ease,background 220ms ease,box-shadow 220ms ease;
}
.faq-item:hover{border-color:var(--brand-line);box-shadow:var(--sh)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:999px;
  display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);
  transition:transform 240ms ease,background 240ms ease,color 240ms ease;
}
.faq-icon svg{width:14px;height:14px}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms ease}
.faq-a-inner{padding:0 24px 22px 24px;font-size:15px;line-height:1.85;color:var(--text-2)}
.faq-item.is-open{
  border-color:rgba(108,76,241,.32);
  background:linear-gradient(90deg,var(--brand-soft) 0%,#fff 58%);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff}

/* ---------- CTA ---------- */
.cta-card{
  position:relative;overflow:hidden;
  background:var(--dark);border-radius:var(--r-lg);
  padding:40px 28px;
  display:flex;flex-direction:column;gap:28px;
  box-shadow:0 26px 60px rgba(23,15,46,.28);
}
@media (min-width:900px){
  .cta-card{padding:56px 60px;flex-direction:row;align-items:center;justify-content:space-between}
}
.cta-card::before{
  content:'';position:absolute;top:-140px;right:-80px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.55) 0%,rgba(255,122,69,.28) 45%,rgba(23,15,46,0) 72%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;max-width:640px}
.cta-title{font-size:clamp(22px,2.8vw,32px);line-height:1.35;font-weight:700;color:#fff;margin:0 0 12px}
.cta-text{font-size:15px;line-height:1.85;color:rgba(255,255,255,.72);margin:0 0 12px}
.cta-note{font-size:14px;color:rgba(255,255,255,.55);margin:0}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{color:#fff;font-weight:700;font-size:17px}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin:16px 0 0;max-width:330px}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin:0 0 16px}
.footer-list{list-style:none;margin:0;padding:0}
.footer-list li{margin-bottom:11px;font-size:14.5px;color:rgba(255,255,255,.72)}
.footer-list a{color:rgba(255,255,255,.72);transition:color 200ms ease}
.footer-list a:hover{color:#FFD9C2}
.footer-bottom{
  margin-top:48px;padding:20px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tab{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.97);
  border-top:1px solid var(--line);
  box-shadow:0 -8px 26px rgba(23,18,38,.08);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab a{
  position:relative;
  height:60px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:12px;color:var(--text-3);
  transition:color 200ms ease;
}
.mobile-tab a svg{width:22px;height:22px}
.mobile-tab a.is-active{color:var(--brand);font-weight:600}
.mobile-tab a.is-active::before{
  content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:3px;border-radius:999px;background:var(--grad);
}
@media (max-width:1023px){
  .mobile-tab{display:grid;grid-template-columns:repeat(5,1fr)}
  body{padding-bottom:76px}
}

/* ---------- 搜索条 ---------- */
.search-bar{
  display:none;
  padding:12px 0 16px;
  border-top:1px solid var(--line);
}
.search-bar.is-open{display:block}
.search-bar input{
  width:100%;padding:12px 16px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:#fff;color:var(--text);
  transition:border-color 200ms ease,box-shadow 200ms ease;
}
.search-bar input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.14)}

/* roulang page: category2 */
:root{
  --brand:#6C4CF1;
  --brand-hover:#5B3BE0;
  --brand-soft:#F3EEFB;
  --brand-line:rgba(108,76,241,.16);
  --orange:#FF7A45;
  --orange-hover:#F2682F;
  --orange-soft:#FFF1E8;
  --grad:linear-gradient(135deg,#6C4CF1 0%,#A855F7 48%,#FF7A45 100%);
  --green:#12B886;
  --bg:#FBF8F4;
  --bg-alt:#F3EEFB;
  --dark:#170F2E;
  --text:#171226;
  --text-2:#5B5470;
  --text-3:#8B84A3;
  --line:#E9E2F7;
  --badge-bg:#FFF0E8;
  --badge-fg:#C2410C;
  --r-lg:26px;
  --r-md:20px;
  --r-sm:14px;
  --sh:0 10px 28px rgba(23,18,38,.07);
  --sh-hover:0 20px 44px rgba(23,18,38,.13);
  --container:1200px;
}
*,*::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,'Segoe UI',sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-hover)}
img{max-width:100%;display:block;height:auto}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
ul{list-style:none;margin:0;padding:0}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(251,248,244,.88);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 6px 24px rgba(23,18,38,.07);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:56px}
@media (min-width:1024px){.nav-wrap{height:68px}}
.logo-link{display:flex;align-items:center;gap:10px;color:var(--text)}
.logo-link:hover{color:var(--text)}
.logo-mark{
  width:34px;height:34px;border-radius:11px;background:var(--grad);
  color:#fff;display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;font-size:16px;line-height:1;flex:0 0 auto;
  box-shadow:0 6px 16px rgba(108,76,241,.28);
}
.logo-text{font-weight:700;font-size:16px;white-space:nowrap}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 12px;border-radius:999px;
  color:var(--text-2);font-size:15px;font-weight:500;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);
  width:22px;height:3px;border-radius:3px;background:var(--grad);
}
.icon-btn{
  width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:#fff;color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:color .2s,border-color .2s,background .2s,box-shadow .2s;
}
.icon-btn svg{width:20px;height:20px}
.icon-btn:hover{color:var(--brand);border-color:var(--brand-line);background:var(--brand-soft)}
.search-pop{
  position:absolute;right:20px;top:62px;width:min(360px,calc(100vw - 40px));
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-hover);padding:16px;display:none;
}
@media (min-width:1024px){.search-pop{top:74px;right:32px}}
.search-pop.is-open{display:block}
.search-pop label{display:block;font-size:13.5px;color:var(--text-3);margin-bottom:8px}
.search-pop input{
  width:100%;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:12px 16px;font-size:15px;outline:none;color:var(--text);
  transition:border-color .2s,box-shadow .2s;
}
.search-pop input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.14)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1px solid transparent;cursor:pointer;
  font-weight:600;font-size:15.5px;padding:13px 26px;min-height:44px;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,filter .2s ease;
}
.btn-primary{background-image:var(--grad);color:#fff;box-shadow:0 12px 26px rgba(108,76,241,.28)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 18px 34px rgba(108,76,241,.34);color:#fff}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{background:transparent;border-color:rgba(108,76,241,.34);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-hover)}
.btn-light{background:#fff;color:#3A2170}
.btn-light:hover{background:#F6F1FD;color:#2A1659;transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff}
.btn:focus-visible,.icon-btn:focus-visible,.nav-link:focus-visible,.chip-btn:focus-visible,.faq-q:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;
}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:14.5px}
.link-arrow svg{width:15px;height:15px;transition:transform .2s ease}
.link-arrow:hover svg{transform:translateX(3px)}
.link-arrow:hover{text-decoration:underline}

/* ============ Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:40px 0 52px;
  background:linear-gradient(180deg,#F6F1FD 0%,var(--bg) 82%);
}
.page-hero::before{
  content:"";position:absolute;right:-160px;top:-200px;
  width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.20),rgba(108,76,241,0) 68%);
}
.page-hero::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:180px;
  background-image:radial-gradient(rgba(108,76,241,.10) 1px,transparent 1px);
  background-size:22px 22px;opacity:.9;pointer-events:none;
}
@media (min-width:1024px){.page-hero{padding:56px 0 72px}}
.hero-grid{position:relative;z-index:1;display:grid;gap:30px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.04fr .96fr;gap:48px}}
.crumb{font-size:13.5px;color:var(--text-3);display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C6BEDD}
.hero-title{
  font-size:clamp(28px,4vw,44px);line-height:1.24;font-weight:700;
  margin:12px 0 14px;
}
.hero-lead{font-size:16.5px;color:var(--text-2);max-width:640px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh);aspect-ratio:16/10;
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(140deg,rgba(108,76,241,.24),rgba(255,122,69,.14) 72%);
}
.badge-data{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--badge-bg);color:var(--badge-fg);
  border-radius:999px;padding:5px 12px;
  font-size:12.5px;font-weight:600;font-variant-numeric:tabular-nums;white-space:nowrap;
}

/* ============ 板块 ============ */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:92px 0}}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:780px;margin-bottom:28px}
.section-head--row{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;
}
@media (min-width:1024px){.section-head{margin-bottom:36px}}
.section-title{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;margin-bottom:10px}
.section-sub{color:var(--text-2);font-size:15.5px}

/* 筛选条 */
.filter-bar{
  display:flex;gap:10px;overflow-x:auto;padding:4px 0 16px;
  scrollbar-width:thin;-webkit-overflow-scrolling:touch;
}
.filter-bar::-webkit-scrollbar{height:6px}
.filter-bar::-webkit-scrollbar-thumb{background:#DDD3F3;border-radius:999px}
.chip-btn{
  flex:0 0 auto;white-space:nowrap;cursor:pointer;
  background:#fff;border:1px solid var(--line);color:var(--text-2);
  border-radius:999px;padding:10px 18px;font-size:14.5px;font-weight:500;min-height:44px;
  transition:background .2s,color .2s,border-color .2s,box-shadow .2s;
}
.chip-btn:hover{color:var(--brand);border-color:var(--brand-line);background:var(--brand-soft)}
.chip-btn.is-active{
  background-image:var(--grad);color:#fff;border-color:transparent;
  box-shadow:0 10px 22px rgba(108,76,241,.24);
}

/* 信息卡 */
.info-card{
  display:flex;gap:16px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px;box-shadow:var(--sh);
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--brand-line)}
.info-icon{
  flex:0 0 auto;width:48px;height:48px;border-radius:var(--r-sm);
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
}
.info-icon svg{width:22px;height:22px}
.info-body{flex:1;min-width:0}
.info-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.info-title{font-size:17.5px;font-weight:600;line-height:1.45;margin-bottom:6px}
.info-text{
  color:var(--text-2);font-size:14.5px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}

/* 对照卡 */
.compare-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh);
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease;
}
.compare-item:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--brand-line)}
.compare-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}
.compare-title{font-size:18px;font-weight:600}
.compare-note{color:var(--text-3);font-size:13.5px;margin-bottom:14px}
.kv-row{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px;
}
.kv-row:last-child{border-bottom:0;padding-bottom:0}
.kv-key{color:var(--text-3);flex:0 0 auto}
.kv-val{color:var(--text);font-weight:600;text-align:right}

/* 场景区 */
.scene-grid{display:grid;gap:28px;align-items:center}
@media (min-width:1024px){.scene-grid{grid-template-columns:.92fr 1.08fr;gap:48px}}
.scene-media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh);aspect-ratio:4/3;position:relative;
}
.scene-media img{width:100%;height:100%;object-fit:cover}
.scene-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(108,76,241,.16),rgba(255,122,69,.10) 70%);
}
.scene-list{display:grid;gap:14px}
.scene-item{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-sm);padding:16px 20px 16px 22px;box-shadow:var(--sh);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.scene-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  border-radius:3px;background:var(--grad);
}
.scene-item:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.scene-item h3{font-size:16.5px;font-weight:600;margin-bottom:4px}
.scene-item p{font-size:14.5px;color:var(--text-2);line-height:1.7}

/* 步骤 */
.steps{display:grid;gap:18px}
@media (min-width:768px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
.step-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh);position:relative;
  transition:transform .22s ease-out,box-shadow .22s ease-out;
}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.step-num{
  width:36px;height:36px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  font-weight:700;font-size:15px;display:flex;align-items:center;justify-content:center;
  margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.step-item h3{font-size:17px;font-weight:600;margin-bottom:8px}
.step-item p{font-size:14.5px;color:var(--text-2);line-height:1.75}

/* FAQ */
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:14px;overflow:hidden;transition:border-color .24s,box-shadow .24s,background .24s;
}
.faq-item.is-open{
  border-color:var(--brand-line);
  background:linear-gradient(180deg,#F8F4FF,#fff);
  box-shadow:var(--sh);
}
.faq-q{
  position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;
  gap:16px;text-align:left;background:none;border:0;cursor:pointer;
  padding:20px 22px;font-size:16.5px;font-weight:600;color:var(--text);line-height:1.55;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  border-radius:3px;background:transparent;transition:background .24s;
}
.faq-item.is-open .faq-q::before{background:var(--grad)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:9px;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  transition:transform .24s ease;
}
.faq-icon svg{width:14px;height:14px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a-inner{padding:0 22px 20px;color:var(--text-2);font-size:15px;line-height:1.85}

/* CTA */
.cta-block{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#170F2E 0%,#3A2170 52%,#6C4CF1 100%);
  border-radius:var(--r-lg);padding:38px 26px;color:#fff;
  display:grid;gap:26px;box-shadow:0 24px 60px rgba(23,15,46,.32);
}
@media (min-width:1024px){.cta-block{grid-template-columns:1.3fr .7fr;align-items:center;padding:56px}}
.cta-block::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,69,.30),rgba(255,122,69,0) 70%);
}
.cta-block h2{font-size:clamp(22px,2.6vw,30px);line-height:1.32;font-weight:700;margin-bottom:10px;position:relative;z-index:1}
.cta-block p{color:rgba(255,255,255,.78);font-size:15px;position:relative;z-index:1}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}
.cta-note{margin-top:14px;font-size:14px;color:rgba(255,255,255,.62);position:relative;z-index:1}
.cta-block .badge-data{background:rgba(255,255,255,.12);color:#FFD9C2}

/* 页脚 */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:56px 0 0}
.footer-grid{display:grid;gap:30px;padding-bottom:36px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{color:#fff;font-weight:700;font-size:17px}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);margin-top:14px;max-width:340px}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.footer-list{display:grid;gap:10px;font-size:14px}
.footer-list a{color:rgba(255,255,255,.72)}
.footer-list a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0 24px;display:flex;flex-wrap:wrap;gap:10px;
  justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6);
}

/* 移动端底部 Tab */
.mobile-tabs{
  position:fixed;left:0;right:0;bottom:0;z-index:60;
  display:flex;background:#fff;border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px rgba(23,18,38,.06);
}
.mobile-tabs a{
  position:relative;flex:1;height:60px;min-width:44px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:12px;color:var(--text-3);line-height:1;
}
.mobile-tabs a svg{width:22px;height:22px}
.mobile-tabs a.is-active{color:var(--brand);font-weight:600}
.mobile-tabs a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:3px;border-radius:0 0 3px 3px;background:var(--grad);
}
@media (min-width:1024px){.mobile-tabs{display:none}}
@media (max-width:1023px){.site-footer{padding-bottom:80px}}

/* roulang page: category3 */
:root{
  --brand:#6C4CF1;
  --brand-hover:#5B3BE0;
  --brand-soft:#F3EEFB;
  --accent:#FF7A45;
  --accent-hover:#F2682F;
  --accent-soft:#FFF1E8;
  --green:#12B886;
  --bg:#FBF8F4;
  --ink:#171226;
  --ink-2:#5B5470;
  --ink-3:#8B84A3;
  --line:#E9E2F7;
  --dark:#170F2E;
  --grad:linear-gradient(135deg,#6C4CF1 0%,#A855F7 48%,#FF7A45 100%);
  --radius-lg:26px;
  --radius-md:20px;
  --radius-sm:14px;
  --shadow-1:0 10px 28px rgba(23,18,38,.07);
  --shadow-2:0 20px 44px rgba(23,18,38,.13);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC',system-ui,-apple-system,'Segoe UI',sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  padding-bottom:calc(68px + env(safe-area-inset-bottom));
}
@media (min-width:1024px){ body{padding-bottom:0} }
img{display:block;max-width:100%}
a{color:var(--brand);text-decoration:none}
button{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{list-style:none;padding:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.skip-link{position:absolute;left:-9999px;top:0;z-index:200}
.skip-link:focus{left:16px;top:12px;background:#fff;padding:10px 18px;border-radius:999px;box-shadow:var(--shadow-2);color:var(--brand);font-weight:600}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:1024px){ .container{padding:0 32px} }

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(251,248,244,.94);
  border-bottom:1px solid transparent;
  transition:background .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px rgba(23,18,38,.06);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;height:56px}
@media (min-width:1024px){ .nav-wrap{height:68px} }
.logo-link{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:36px;height:36px;flex:none;
  display:grid;place-items:center;
  border-radius:12px;background:var(--grad);
  color:#fff;font-size:17px;font-weight:700;line-height:1;
  box-shadow:0 6px 16px rgba(108,76,241,.28);
}
@media (min-width:1024px){ .logo-mark{width:40px;height:40px;font-size:18px} }
.logo-text{font-size:16px;font-weight:700;color:var(--ink)}
@media (min-width:1024px){ .logo-text{font-size:18px} }
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--ink-2);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:22px;height:3px;border-radius:999px;background:var(--grad);
}
.icon-btn{
  width:44px;height:44px;display:grid;place-items:center;
  border-radius:999px;border:1px solid var(--line);background:#fff;
  color:var(--ink-2);cursor:pointer;
  transition:color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.icon-btn:hover{color:var(--brand);border-color:rgba(108,76,241,.35);box-shadow:var(--shadow-1)}
.icon-btn svg{width:20px;height:20px}
.search-pop{
  position:fixed;top:72px;left:50%;transform:translateX(-50%);
  width:min(560px,calc(100% - 32px));z-index:90;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:var(--shadow-2);padding:16px;
}
@media (min-width:1024px){ .search-pop{top:84px} }
.search-box{display:flex;gap:10px;flex-wrap:wrap}
.search-box input{
  flex:1 1 200px;min-height:46px;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:12px 16px;font-size:15px;color:var(--ink);background:#fff;
}
.search-box input::placeholder{color:var(--ink-3)}
.search-box input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,76,241,.14)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 26px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;text-align:center;
  transition:transform .22s ease-out,box-shadow .22s ease-out,background .22s ease,color .22s ease,filter .22s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(108,76,241,.28)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 16px 32px rgba(108,76,241,.34)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{background:transparent;border-color:rgba(108,76,241,.35);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft)}
.btn-light{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.42);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.18)}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed}
.textlink{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand);
}
.textlink svg{width:16px;height:16px;transition:transform .22s ease-out}
.textlink:hover svg{transform:translateX(3px)}
.textlink:hover{text-decoration:underline}

/* ---------- 通用标签 / 徽章 ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;line-height:1.7;
}
.chip-accent{background:var(--accent-soft);color:#C2410C}
.badge-data{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:999px;
  background:#FFF0E8;color:#C2410C;
  font-size:12.5px;font-weight:600;line-height:1.7;
  font-variant-numeric:tabular-nums;
}
.badge-dark{background:rgba(255,255,255,.12);color:#FFD9C2}

/* ---------- 板块容器 ---------- */
.section{padding:56px 0}
@media (min-width:1024px){ .section{padding:92px 0} }
.section-alt{background:var(--brand-soft)}
.sec-head{max-width:780px;margin-bottom:34px}
.sec-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;color:var(--ink);margin:14px 0 12px}
.sec-head p{font-size:16px;color:var(--ink-2)}
[id]{scroll-margin-top:96px}

/* ---------- Hero ---------- */
.cat-hero{position:relative;overflow:hidden;padding:38px 0 48px;background:linear-gradient(180deg,#F6F1FD 0%,var(--bg) 100%)}
@media (min-width:1024px){ .cat-hero{padding:56px 0 72px} }
.cat-hero::before{
  content:"";position:absolute;top:-170px;right:-130px;width:520px;height:520px;
  background:radial-gradient(circle at center,rgba(108,76,241,.20) 0%,rgba(108,76,241,0) 68%);
  pointer-events:none;
}
.cat-hero::after{
  content:"";position:absolute;bottom:-120px;left:-90px;width:380px;height:380px;
  background:radial-gradient(circle at center,rgba(255,122,69,.16) 0%,rgba(255,122,69,0) 70%);
  pointer-events:none;
}
.cat-hero-grid{position:relative;z-index:1;display:grid;gap:28px;align-items:center}
@media (min-width:1024px){ .cat-hero-grid{grid-template-columns:1.05fr .95fr;gap:40px} }
.cat-h1{font-size:clamp(30px,4.4vw,46px);line-height:1.22;font-weight:700;color:var(--ink);margin:14px 0 16px}
.hero-lead{font-size:16px;line-height:1.8;color:var(--ink-2);max-width:560px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.cat-hero-media{
  border-radius:var(--radius-lg);overflow:hidden;
  aspect-ratio:16/10;background:var(--brand-soft);box-shadow:var(--shadow-2);
}
.cat-hero-media img{width:100%;height:100%;object-fit:cover}

/* ---------- 分栏 + 锚点 ---------- */
.layout-split{display:flex;flex-direction:column;gap:26px}
@media (min-width:1024px){
  .layout-split{display:grid;grid-template-columns:minmax(0,1fr) 248px;gap:44px;align-items:start}
}
.anchor-aside{order:-1}
@media (min-width:1024px){ .anchor-aside{order:2;position:sticky;top:96px} }
.anchor-nav{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none}
.anchor-nav::-webkit-scrollbar{display:none}
@media (min-width:1024px){
  .anchor-nav{
    display:block;overflow:visible;padding:18px;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
    box-shadow:var(--shadow-1);
  }
}
.anchor-title{display:none}
@media (min-width:1024px){
  .anchor-title{display:block;font-size:13px;font-weight:600;color:var(--ink-3);margin:0 0 10px;padding-left:12px}
}
.anchor-link{
  display:block;white-space:nowrap;
  padding:8px 14px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
  font-size:14px;font-weight:500;color:var(--ink-2);
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
@media (min-width:1024px){
  .anchor-link{border:none;background:transparent;border-radius:10px;padding:9px 12px;margin-bottom:4px}
}
.anchor-link:hover{color:var(--brand);background:var(--brand-soft);border-color:rgba(108,76,241,.3)}
.anchor-link.active{color:var(--brand);background:var(--brand-soft);border-color:rgba(108,76,241,.3);font-weight:600}

/* ---------- Z 字图文 ---------- */
.zrow{display:grid;gap:22px;align-items:center;margin-bottom:54px}
.zrow:last-child{margin-bottom:0}
@media (min-width:768px){
  .zrow{grid-template-columns:1fr 1fr;gap:40px;margin-bottom:72px}
  .zrow.rev .zmedia{order:2}
}
.zmedia{border-radius:24px;overflow:hidden;background:var(--brand-soft);box-shadow:var(--shadow-1)}
.zmedia img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s ease-out}
.zrow:hover .zmedia img{transform:scale(1.03)}
.zbody h2{font-size:clamp(20px,2.4vw,26px);line-height:1.4;font-weight:700;color:var(--ink);margin:14px 0 12px}
.zbody p{font-size:16px;color:var(--ink-2);margin-bottom:16px}
.point-list li{position:relative;padding-left:22px;margin-bottom:9px;font-size:15px;line-height:1.8;color:var(--ink-2)}
.point-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;background:var(--grad);
}

/* ---------- 卡片 ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);
  transition:transform .22s ease-out,box-shadow .22s ease-out;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.mini-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:640px){ .mini-grid{grid-template-columns:repeat(2,1fr)} }
@media (min-width:1024px){ .mini-grid{grid-template-columns:repeat(4,1fr)} }
.mini-card{padding:24px 22px}
.mini-icon{
  width:44px;height:44px;border-radius:var(--radius-sm);
  display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);
  margin-bottom:16px;
}
.mini-icon svg{width:22px;height:22px}
.mini-card h3{font-size:17px;font-weight:600;color:var(--ink);margin-bottom:8px}
.mini-card p{font-size:14.5px;line-height:1.8;color:var(--ink-2)}

/* ---------- 元素对照 ---------- */
.def-grid{display:grid;gap:14px;grid-template-columns:1fr}
@media (min-width:768px){ .def-grid{grid-template-columns:repeat(2,1fr)} }
.def-item{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  transition:border-color .2s ease,box-shadow .2s ease,transform .22s ease-out;
}
.def-item:hover{border-color:rgba(108,76,241,.4);box-shadow:var(--shadow-1);transform:translateY(-2px)}
.def-key{font-size:15px;font-weight:600;color:var(--ink)}
.def-val{font-size:13.5px;color:var(--ink-2);text-align:right;line-height:1.7}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-1);
  transition:background .24s ease,border-color .24s ease;
}
.faq-item[open]{background:var(--brand-soft);border-color:rgba(108,76,241,.22)}
.faq-q{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600;line-height:1.6;color:var(--ink);
}
.faq-q::-webkit-details-marker{display:none}
.faq-icon{width:20px;height:20px;flex:none;margin-top:3px;color:var(--brand);transition:transform .24s ease}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-a{padding:0 24px 22px;border-left:3px solid var(--brand);margin-left:24px;padding-left:18px}
.faq-a p{font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ---------- CTA ---------- */
.cta-wrap{padding:56px 0 72px}
@media (min-width:1024px){ .cta-wrap{padding:88px 0 104px} }
.cta-card{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  background:linear-gradient(135deg,#170F2E 0%,#2B1B57 52%,#5B3BE0 100%);
  padding:36px 26px;color:#fff;
  display:grid;gap:26px;
}
@media (min-width:768px){
  .cta-card{grid-template-columns:1.5fr 1fr;align-items:center;padding:56px 48px;gap:32px}
}
.cta-card::after{
  content:"";position:absolute;right:-110px;bottom:-150px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,69,.34) 0%,rgba(255,122,69,0) 70%);
  pointer-events:none;
}
.cta-card h2{font-size:clamp(22px,2.8vw,32px);line-height:1.32;font-weight:700;color:#fff;margin-bottom:12px}
.cta-card p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.78)}
.cta-note{font-size:14px;color:rgba(255,255,255,.6);margin-top:12px}
.cta-actions{position:relative;z-index:1;display:flex;flex-direction:column;gap:12px;max-width:300px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding-top:64px}
.footer-grid{display:grid;gap:36px;grid-template-columns:1fr}
@media (min-width:640px){ .footer-grid{grid-template-columns:1fr 1fr} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px} }
.footer-brand{color:#fff;font-weight:700;font-size:18px}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin-top:16px;max-width:340px}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.footer-list{font-size:14px}
.footer-list li{margin-bottom:10px}
.footer-list a{color:rgba(255,255,255,.72);transition:color .2s ease}
.footer-list a:hover{color:#fff}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:8px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 移动端底部 Tab ---------- */
.tab-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;
  background:rgba(251,248,244,.97);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
@media (min-width:1024px){ .tab-bar{display:none} }
.tab-item{
  position:relative;flex:1;height:60px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:12px;line-height:1.2;color:var(--ink-3);
  transition:color .2s ease;
}
.tab-item svg{width:22px;height:22px}
.tab-item:hover{color:var(--brand)}
.tab-item.active{color:var(--brand);font-weight:600}
.tab-item.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:3px;border-radius:0 0 999px 999px;background:var(--grad);
}

/* roulang page: category4 */
:root{
  --brand:#6C4CF1;
  --brand-hover:#5B3BE0;
  --brand-soft:#F3EEFB;
  --accent:#FF7A45;
  --accent-hover:#F2682F;
  --accent-soft:#FFF1E8;
  --green:#12B886;
  --bg:#FBF8F4;
  --bg-alt:#F3EEFB;
  --ink:#171226;
  --ink-2:#5B5470;
  --ink-3:#8B84A3;
  --line:#E9E2F7;
  --dark:#170F2E;
  --grad:linear-gradient(135deg,#6C4CF1 0%,#A855F7 48%,#FF7A45 100%);
  --r-lg:26px;
  --r-md:20px;
  --r-sm:14px;
  --sh-1:0 10px 28px rgba(23,18,38,.07);
  --sh-2:0 20px 44px rgba(23,18,38,.13);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC',system-ui,-apple-system,'Segoe UI',sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--brand-hover)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,248,244,.92);
  border-bottom:1px solid transparent;
  transition:background .25s ease-out,box-shadow .25s ease-out,border-color .25s ease-out;
}
.site-header.scrolled{
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  box-shadow:0 8px 24px rgba(23,18,38,.06);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:56px}
@media (min-width:1024px){.nav-wrap{height:68px}}
.logo-link{display:flex;align-items:center;gap:10px;color:var(--ink)}
.logo-link:hover{color:var(--ink)}
.logo-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:12px;
  background:var(--grad);color:#fff;font-weight:700;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(108,76,241,.28)
}
.logo-text{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:999px;font-size:15px;font-weight:500;
  color:var(--ink-2);transition:color .2s ease-out,background .2s ease-out
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:22px;height:3px;border-radius:999px;background:var(--grad)
}
.icon-btn{
  width:44px;height:44px;border-radius:14px;border:1px solid var(--line);
  background:#fff;color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out
}
.icon-btn svg{width:20px;height:20px}
.icon-btn:hover{color:var(--brand);border-color:rgba(108,76,241,.4);box-shadow:var(--sh-1)}
.icon-btn:active{transform:translateY(1px)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,color .2s ease-out,filter .2s ease-out
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 26px rgba(108,76,241,.28)}
.btn-primary:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{background:transparent;color:var(--brand);border-color:rgba(108,76,241,.4)}
.btn-ghost:hover{color:var(--brand-hover);background:var(--brand-soft);border-color:var(--brand)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:11px 22px;font-size:14px}
.btn-block{width:100%}

/* ============ 通用组件 ============ */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.section-alt{background:var(--bg-alt)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border:1px solid rgba(108,76,241,.16);
  padding:6px 14px;border-radius:999px
}
.h1{font-size:clamp(30px,4.4vw,46px);line-height:1.22;font-weight:700}
.h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700}
.h3{font-size:20px;line-height:1.4;font-weight:600}
.lead{font-size:17px;line-height:1.85;color:var(--ink-2)}
.muted{color:var(--ink-3)}
.text-block{max-width:780px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out
}
.card-hover:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(108,76,241,.28)}
.card-md{border-radius:var(--r-md)}
.card-sm{border-radius:var(--r-sm)}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 13px;border-radius:999px;font-size:13px;font-weight:600;
  background:var(--brand-soft);color:var(--brand);border:1px solid rgba(108,76,241,.16);
  transition:background .2s ease-out,color .2s ease-out,transform .2s ease-out
}
.chip:hover{background:#E8DFFB;color:var(--brand-hover)}
.chip.is-active{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 8px 18px rgba(108,76,241,.24)}
.badge-data{
  display:inline-flex;align-items:center;gap:5px;
  padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:var(--accent-soft);color:#C2410C;font-variant-numeric:tabular-nums;
  white-space:nowrap
}
.badge-data.green{background:rgba(18,184,134,.12);color:#0B7A5B}
.badge-ghost{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;background:var(--brand-soft);color:var(--brand)
}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)
}
.text-link svg{width:16px;height:16px;transition:transform .2s ease-out}
.text-link:hover svg{transform:translateX(3px)}
.text-link:hover{text-decoration:underline}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ============ Hero（窄版） ============ */
.hero-narrow{
  position:relative;overflow:hidden;
  padding:40px 0 48px;
  background:
    radial-gradient(760px 340px at 88% -10%,rgba(108,76,241,.16),transparent 70%),
    radial-gradient(520px 260px at 4% 110%,rgba(255,122,69,.14),transparent 70%),
    var(--bg);
}
@media (min-width:1024px){.hero-narrow{padding:56px 0 72px}}
.hero-narrow::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(23,18,38,.10) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.hero-grid{position:relative;z-index:1;display:grid;gap:32px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:48px}}
.hero-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:16/10;border:1px solid var(--line);box-shadow:var(--sh-2);background:#EFE9FB
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::before{
  content:"";position:absolute;inset:auto -20% -40% auto;width:70%;height:80%;
  background:var(--grad);filter:blur(60px);opacity:.32;z-index:1
}
.hero-media-cap{
  position:absolute;left:18px;bottom:18px;z-index:2;
  background:rgba(23,15,46,.72);color:#fff;border-radius:var(--r-sm);
  padding:12px 16px;font-size:13.5px;line-height:1.6;
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

/* ============ 排行列表 ============ */
.rank-list{display:grid;gap:12px}
.rank-row{
  display:grid;grid-template-columns:44px 1fr auto;gap:14px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 18px;box-shadow:var(--sh-1);
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out
}
.rank-row:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(108,76,241,.28)}
.rank-no{
  width:36px;height:36px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
  background:var(--brand-soft);color:var(--brand)
}
.rank-no.top{background:var(--grad);color:#fff;box-shadow:0 8px 18px rgba(108,76,241,.26)}
.rank-main{min-width:0}
.rank-title{font-size:16px;font-weight:600;color:var(--ink);display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank-sub{font-size:13.5px;color:var(--ink-3);margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bar{height:8px;border-radius:999px;background:rgba(108,76,241,.12);overflow:hidden;margin-top:10px}
.bar i{display:block;height:100%;border-radius:999px;background:var(--grad)}
.rank-side{display:flex;flex-direction:column;align-items:flex-end;gap:8px}
@media (max-width:640px){
  .rank-row{grid-template-columns:36px 1fr;gap:12px}
  .rank-side{grid-column:1 / -1;flex-direction:row;align-items:center;justify-content:space-between;width:100%}
}

/* ============ 说明卡组 ============ */
.kv-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:22px 24px;box-shadow:var(--sh-1)}
.kv-row{display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;padding:12px 0;border-bottom:1px dashed var(--line);font-size:15px}
.kv-row:last-child{border-bottom:0;padding-bottom:0}
.kv-row span:first-child{color:var(--ink-3);font-size:14px}
.kv-row span:last-child{font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums}

/* ============ 时间线 ============ */
.timeline{position:relative;padding-left:26px}
.timeline::before{
  content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(108,76,241,.55),rgba(255,122,69,.35),transparent)
}
.tl-item{position:relative;padding:0 0 26px 8px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-26px;top:8px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);box-shadow:0 0 0 4px rgba(108,76,241,.12)
}
.tl-date{font-size:13px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums}
.tl-card{
  margin-top:10px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 18px;box-shadow:var(--sh-1);
  transition:transform .22s ease-out,box-shadow .22s ease-out
}
.tl-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.tl-title{font-size:16px;font-weight:600}
.tl-desc{font-size:14px;color:var(--ink-2);margin-top:4px}

/* ============ 精选卡 ============ */
.pick-grid{display:grid;gap:20px}
@media (min-width:1024px){.pick-grid{grid-template-columns:1.25fr .9fr}}
.pick-media{border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/9;background:#EFE9FB}
.pick-media img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
.card-hover:hover .pick-media img{transform:scale(1.03)}
.mini-card{
  display:flex;gap:16px;align-items:stretch;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);padding:14px;box-shadow:var(--sh-1);
  transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out
}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(108,76,241,.28)}
.mini-thumb{width:118px;flex:0 0 118px;border-radius:var(--r-sm);overflow:hidden;aspect-ratio:4/3;background:#EFE9FB}
.mini-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
.mini-card:hover .mini-thumb img{transform:scale(1.03)}
.mini-title{font-size:15.5px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.mini-sum{font-size:13.5px;color:var(--ink-2);margin-top:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-top:10px}
@media (max-width:520px){
  .mini-card{flex-direction:column}
  .mini-thumb{width:100%;flex:0 0 auto;aspect-ratio:16/9}
}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;position:relative;
  transition:border-color .22s ease-out,box-shadow .22s ease-out
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad);
  opacity:0;transition:opacity .22s ease-out
}
.faq-item.open{border-color:rgba(108,76,241,.3);background:#FCFAFE}
.faq-item.open::before{opacity:1}
.faq-head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--ink)
}
.faq-head:hover{color:var(--brand)}
.faq-ico{
  width:26px;height:26px;flex:0 0 26px;border-radius:50%;background:var(--brand-soft);
  color:var(--brand);display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;transition:transform .24s ease-out,background .24s ease-out,color .24s ease-out
}
.faq-item.open .faq-ico{transform:rotate(45deg);background:var(--grad);color:#fff}
.faq-body{max-height:0;overflow:hidden;transition:max-height .24s ease-out}
.faq-body p{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ============ CTA ============ */
.cta-wrap{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(135deg,#170F2E 0%,#3A1E6E 52%,#6C4CF1 100%);
  color:#fff;padding:38px 26px;box-shadow:var(--sh-2)
}
@media (min-width:1024px){.cta-wrap{padding:56px 60px}}
.cta-wrap::after{
  content:"";position:absolute;right:-12%;bottom:-40%;width:44%;height:120%;
  background:radial-gradient(closest-side,rgba(255,122,69,.5),transparent);
  filter:blur(30px);pointer-events:none
}
.cta-inner{position:relative;z-index:1;display:grid;gap:26px;align-items:center}
@media (min-width:1024px){.cta-inner{grid-template-columns:1.4fr 1fr;gap:44px}}
.cta-title{font-size:clamp(23px,2.8vw,32px);font-weight:700;line-height:1.3}
.cta-desc{margin-top:12px;font-size:15.5px;color:rgba(255,255,255,.78);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-wrap .btn-ghost{color:#fff;border-color:rgba(255,255,255,.42)}
.cta-wrap .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}
.cta-note{margin-top:16px;font-size:14px;color:rgba(255,255,255,.66)}
.badge-dark{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;background:rgba(255,255,255,.12);color:#FFD9C2
}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:56px 0 28px;margin-top:0}
.footer-grid{display:grid;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}}
.footer-brand{font-size:17px;font-weight:700;color:#fff}
.footer-desc{font-size:14px;line-height:1.8;margin-top:14px;max-width:320px;color:rgba(255,255,255,.68)}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.footer-list{display:grid;gap:10px;font-size:14px}
.footer-list a{color:rgba(255,255,255,.72)}
.footer-list a:hover{color:#fff}
.footer-list li{line-height:1.7}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6)
}
.site-footer .logo-mark{box-shadow:none}

/* ============ 移动端底部 Tab ============ */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.97);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px rgba(23,18,38,.06)
}
.tabbar-inner{display:grid;grid-template-columns:repeat(5,1fr)}
.tab-item{
  position:relative;height:60px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;font-size:12px;color:var(--ink-3);font-weight:500
}
.tab-item svg{width:22px;height:22px}
.tab-item:hover{color:var(--brand)}
.tab-item.active{color:var(--brand);font-weight:600}
.tab-item.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:34px;height:3px;border-radius:0 0 999px 999px;background:var(--grad)
}
@media (max-width:1023px){body{padding-bottom:76px}}
@media (min-width:1024px){.tabbar{display:none}}

/* roulang page: category5 */
:root{
  --brand:#6C4CF1;
  --brand-hover:#5B3BE0;
  --brand-soft:#F3EEFB;
  --brand-line:rgba(108,76,241,.16);
  --accent:#FF7A45;
  --accent-hover:#F2682F;
  --accent-soft:#FFF1E8;
  --accent-deep:#C2410C;
  --green:#12B886;
  --bg:#FBF8F4;
  --bg-alt:#F3EEFB;
  --dark:#170F2E;
  --text:#171226;
  --text-2:#5B5470;
  --text-3:#8B84A3;
  --border:#E9E2F7;
  --r-lg:26px;
  --r-md:20px;
  --r-sm:14px;
  --sh:0 10px 28px rgba(23,18,38,.07);
  --sh-h:0 20px 44px rgba(23,18,38,.13);
  --grad:linear-gradient(135deg,#6C4CF1 0%,#A855F7 48%,#FF7A45 100%);
  --container:1200px;
}
*,*::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,-apple-system,'Segoe UI',sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-hover)}
img{max-width:100%;display:block}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(251,248,244,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:background .25s ease-out,box-shadow .25s ease-out,border-color .25s ease-out;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{background:rgba(255,255,255,.94);box-shadow:0 6px 20px rgba(23,18,38,.07);border-bottom-color:var(--border)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:68px}
@media(max-width:1023px){.nav-wrap{height:56px}}
.logo-link{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex:none}
.logo-link:hover{color:var(--text)}
.logo-mark{
  width:34px;height:34px;border-radius:11px;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;
  box-shadow:0 6px 16px rgba(108,76,241,.28);flex:none;
}
.logo-text{font-weight:700;font-size:17px;white-space:nowrap}
@media(max-width:400px){.logo-text{font-size:15px}.logo-mark{width:30px;height:30px;font-size:14px}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;
  padding:0 13px;font-size:15px;color:var(--text-2);border-radius:10px;
  transition:color .2s ease-out,background .2s ease-out;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:3px;border-radius:3px;background:var(--grad);
}
.icon-btn{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--border);background:#fff;
  color:var(--text-2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:color .2s ease-out,border-color .2s ease-out,background .2s ease-out;
}
.icon-btn svg{width:20px;height:20px}
.icon-btn:hover{color:var(--brand);border-color:var(--brand-line);background:var(--brand-soft)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;padding:13px 26px;border-radius:999px;
  border:1px solid transparent;cursor:pointer;min-height:44px;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,color .2s ease-out,filter .2s ease-out;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 26px rgba(108,76,241,.28)}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:0 18px 34px rgba(108,76,241,.34);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{background:transparent;border-color:rgba(108,76,241,.35);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-hover)}
.btn-light{background:#fff;color:var(--brand);box-shadow:0 12px 26px rgba(0,0,0,.16)}
.btn-light:hover{color:var(--brand-hover);transform:translateY(-1px);box-shadow:0 18px 34px rgba(0,0,0,.22)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.13);color:#fff;transform:translateY(-1px)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand)}
.link-arrow svg{width:15px;height:15px;transition:transform .2s ease-out}
.link-arrow:hover svg{transform:translateX(3px)}
.link-arrow:hover{text-decoration:underline}

/* ---------- atoms ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;background:var(--brand-soft);color:var(--brand);
  border:1px solid var(--brand-line);font-size:12.5px;font-weight:600;padding:5px 12px;border-radius:999px;
}
.badge-data{
  display:inline-flex;align-items:center;gap:6px;background:var(--accent-soft);color:var(--accent-deep);
  font-size:12.5px;font-weight:600;padding:6px 12px;border-radius:999px;font-variant-numeric:tabular-nums;
  white-space:nowrap;
}
.badge-soft{background:var(--brand-soft);color:var(--brand)}
.badge-green{background:rgba(18,184,134,.12);color:#0E8F6A}
.card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--sh);
  overflow:hidden;transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.card-img{overflow:hidden;background:var(--bg-alt)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
.card:hover .card-img img{transform:scale(1.03)}

/* ---------- hero ---------- */
.cat-hero{position:relative;overflow:hidden;padding:44px 0 48px;background:var(--bg)}
@media(min-width:1024px){.cat-hero{padding:56px 0 56px}}
.cat-hero::before{
  content:"";position:absolute;width:560px;height:560px;right:-160px;top:-240px;
  background:radial-gradient(circle at center,rgba(108,76,241,.22),transparent 68%);
  pointer-events:none;
}
.cat-hero::after{
  content:"";position:absolute;left:-120px;bottom:-220px;width:420px;height:420px;
  background:radial-gradient(circle at center,rgba(255,122,69,.18),transparent 70%);
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:1}
.cat-hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.22;font-weight:700;margin:14px 0 16px}
.hero-lead{font-size:16px;line-height:1.85;color:var(--text-2);max-width:620px}
.hero-visual{
  position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--border);
  box-shadow:var(--sh);aspect-ratio:16/10;background:var(--bg-alt);
}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(210deg,rgba(108,76,241,.20),rgba(255,122,69,.10) 55%,transparent 80%);
  pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3)}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .current{color:var(--text-3)}

/* ---------- layout blocks ---------- */
.section{padding:52px 0}
@media(min-width:1024px){.section{padding:88px 0}}
.section-alt{background:var(--bg-alt)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-title{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700}
.section-sub{margin-top:10px;font-size:15px;line-height:1.8;color:var(--text-2);max-width:720px}

/* ---------- help two-column ---------- */
.help-layout{display:grid;gap:28px}
@media(min-width:1024px){.help-layout{grid-template-columns:264px minmax(0,1fr);gap:40px;align-items:start}}
.side-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  box-shadow:var(--sh);padding:18px;
}
@media(min-width:1024px){.side-card{position:sticky;top:92px}}
.side-title{font-size:14px;font-weight:700;color:var(--text);padding:0 12px 10px;display:flex;align-items:center;justify-content:space-between}
.side-toggle{
  display:inline-flex;align-items:center;gap:6px;background:var(--brand-soft);color:var(--brand);
  border:0;border-radius:999px;padding:6px 12px;font-size:12.5px;font-weight:600;cursor:pointer;
}
.side-toggle svg{width:14px;height:14px;transition:transform .22s ease-out}
.side-toggle.open svg{transform:rotate(180deg)}
@media(min-width:1024px){.side-toggle{display:none}}
.side-nav{display:none;margin-top:6px}
.side-nav.show{display:block}
@media(min-width:1024px){.side-nav{display:block !important}}
.side-link{
  display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:12px;
  font-size:14.5px;color:var(--text-2);transition:background .2s ease-out,color .2s ease-out,box-shadow .2s ease-out;
}
.side-link:hover{background:var(--brand-soft);color:var(--brand)}
.side-link.active{background:var(--brand-soft);color:var(--brand);font-weight:600;box-shadow:inset 3px 0 0 var(--brand)}
.side-link .dot{width:6px;height:6px;border-radius:50%;background:var(--text-3);flex:none;transition:background .2s ease-out}
.side-link.active .dot,.side-link:hover .dot{background:var(--brand)}
.side-note{margin-top:16px;padding:14px;border-radius:var(--r-sm);background:var(--accent-soft);font-size:13px;line-height:1.75;color:var(--accent-deep)}

/* ---------- search ---------- */
.search-box{
  display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-sm);padding:8px 10px 8px 16px;box-shadow:var(--sh);
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.search-box:focus-within{border-color:rgba(108,76,241,.5);box-shadow:0 0 0 3px rgba(108,76,241,.12)}
.search-box svg{width:19px;height:19px;color:var(--text-3);flex:none}
.search-box input{
  flex:1;min-width:0;border:0;outline:none;background:transparent;
  font-size:15px;color:var(--text);padding:10px 0;font-family:inherit;
}
.search-box input::placeholder{color:var(--text-3)}
.search-btn{
  border:0;border-radius:999px;padding:11px 20px;font-size:14.5px;font-weight:600;color:#fff;
  background:var(--grad);cursor:pointer;min-height:42px;transition:filter .2s ease-out,transform .2s ease-out;
}
.search-btn:hover{filter:brightness(1.05);transform:translateY(-1px)}
.search-empty{
  display:none;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  min-height:200px;border:1px dashed var(--border);border-radius:var(--r-md);background:#fff;
  color:var(--text-2);font-size:14.5px;text-align:center;padding:24px;
}
.search-empty svg{width:38px;height:38px;color:var(--text-3)}

/* ---------- faq ---------- */
.faq-item{
  background:#fff;border:1px solid var(--border);border-left:3px solid transparent;border-radius:var(--r-md);
  margin-bottom:14px;overflow:hidden;
  transition:box-shadow .22s ease-out,border-color .22s ease-out,background .22s ease-out;
}
.faq-item.is-open{
  border-left-color:var(--brand);background:linear-gradient(180deg,#FBF9FF,#FFFFFF);
  box-shadow:var(--sh);
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:600;line-height:1.55;color:var(--text);
  transition:color .2s ease-out;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex:none;width:27px;height:27px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;transition:transform .24s ease-out,background .24s ease-out,color .24s ease-out;
}
.faq-icon svg{width:15px;height:15px}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ---------- contact card ---------- */
.contact-card{
  margin-top:24px;border-radius:var(--r-md);border:1px solid var(--brand-line);
  background:linear-gradient(140deg,#F6F1FF,#FFF6F0);padding:24px;
  display:grid;gap:16px;
}
@media(min-width:768px){.contact-card{grid-template-columns:1.4fr 1fr;align-items:center;padding:26px 28px}}
.contact-card h3{font-size:19px;font-weight:700;margin-bottom:8px}
.contact-card p{font-size:14.5px;line-height:1.8;color:var(--text-2)}
.contact-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- steps ---------- */
.steps{position:relative}
.step{position:relative;padding:0 0 26px 58px}
.step:last-child{padding-bottom:0}
.step::before{content:"";position:absolute;left:19px;top:44px;bottom:6px;width:2px;background:var(--border)}
.step:last-child::before{display:none}
.step-num{
  position:absolute;left:0;top:0;width:38px;height:38px;border-radius:50%;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
  box-shadow:0 8px 18px rgba(108,76,241,.25);
}
.step-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-md);padding:18px 20px;box-shadow:var(--sh)}
.step-card h3{font-size:18px;font-weight:600;margin-bottom:8px}
.step-card p{font-size:14.5px;line-height:1.8;color:var(--text-2)}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}

/* ---------- topic tags ---------- */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-pill{
  display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--border);
  border-radius:999px;padding:9px 16px;font-size:14px;color:var(--text-2);min-height:40px;
  transition:transform .2s ease-out,border-color .2s ease-out,color .2s ease-out,box-shadow .2s ease-out;
}
.tag-pill:hover{transform:translateY(-2px);border-color:var(--brand-line);color:var(--brand);box-shadow:var(--sh)}
.tag-pill .num{font-size:12.5px;font-weight:600;color:var(--accent-deep);background:var(--accent-soft);border-radius:999px;padding:2px 8px;font-variant-numeric:tabular-nums}

/* ---------- channel cards ---------- */
.chan-card{display:flex;gap:16px;align-items:flex-start;padding:20px;background:#fff;border:1px solid var(--border);border-radius:var(--r-md);box-shadow:var(--sh);transition:transform .22s ease-out,box-shadow .22s ease-out}
.chan-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.chan-icon{
  flex:none;width:46px;height:46px;border-radius:14px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
}
.chan-icon svg{width:22px;height:22px}
.chan-card h3{font-size:17px;font-weight:600;margin-bottom:6px}
.chan-card p{font-size:14px;line-height:1.78;color:var(--text-2)}

/* ---------- cta ---------- */
.cta-block{
  position:relative;overflow:hidden;border-radius:var(--r-lg);color:#fff;
  background:linear-gradient(135deg,#231653 0%,#3B1F72 46%,#6C4CF1 100%);
  padding:40px 26px;
}
@media(min-width:768px){.cta-block{padding:56px 56px}}
.cta-block::after{
  content:"";position:absolute;width:440px;height:440px;right:-140px;bottom:-240px;
  background:radial-gradient(circle at center,rgba(255,122,69,.42),transparent 68%);pointer-events:none;
}
.cta-inner{position:relative;z-index:1;display:grid;gap:26px}
@media(min-width:1024px){.cta-inner{grid-template-columns:1.5fr 1fr;align-items:center}}
.cta-block h2{font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:700;margin-bottom:12px}
.cta-block p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.8);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-note{margin-top:14px;font-size:13.5px;color:rgba(255,255,255,.6)}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:56px 0 24px;margin-top:0}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media(min-width:768px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{color:#fff;font-weight:700;font-size:17px}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:350px}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin:0 0 14px}
.footer-list{display:grid;gap:10px;font-size:14px}
.footer-list a{color:rgba(255,255,255,.72)}
.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,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- mobile tabbar ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:60;display:grid;grid-template-columns:repeat(5,1fr);
  background:rgba(255,255,255,.98);border-top:1px solid var(--border);
  box-shadow:0 -8px 24px rgba(23,18,38,.08);
  padding-bottom:env(safe-area-inset-bottom);
}
@media(min-width:1024px){.mobile-tabbar{display:none}}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:60px;font-size:12px;color:var(--text-3);transition:color .2s ease-out;
}
.tab-item svg{width:22px;height:22px}
.tab-item:hover{color:var(--brand)}
.tab-item.active{color:var(--brand);font-weight:600}
.tab-item.active::before{
  content:"";position:absolute;top:0;left:24%;right:24%;height:3px;border-radius:0 0 3px 3px;background:var(--grad);
}
@media(max-width:1023px){body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}}