*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
:root{
  --plum:#7c3aed;--plum-dark:#5b21b6;--plum-soft:#f5f3ff;
  --rose:#db2777;--rose-soft:#fdf2f8;--ink:#4c1d95;
  --text:#1e1b4b;--muted:#6b7280;--line:#ddd6fe;--white:#fff
}
body{font-family:"Noto Sans SC",system-ui,sans-serif;background:#fff;color:var(--text);line-height:1.78;font-size:16px}
a{color:var(--plum);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}

.site-header{background:#fff;border-bottom:2px solid var(--plum);position:sticky;top:0;z-index:360;box-shadow:0 1px 0 var(--line)}
.header-inner{max-width:1140px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;position:relative}
.brand{display:flex;align-items:center;gap:10px;color:#111;font-weight:600;font-size:.93rem}
.brand:hover{text-decoration:none}
.brand img{border-radius:10px;border:2px solid var(--line)}
.brand em{font-style:normal;color:var(--plum-dark);font-weight:700}
.site-nav ul{display:flex;flex-wrap:wrap;gap:6px 18px;list-style:none}
.site-nav a{color:var(--muted);font-size:.9rem;padding:4px 0}
.site-nav a.active,.site-nav a:hover{color:var(--rose);font-weight:600;border-bottom:2px solid var(--plum);text-decoration:none}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:22px;height:2px;background:#333;transition:.2s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.ads-top-bar{background:var(--plum-soft);border-bottom:1px solid var(--line);padding:10px 0}
.applist-title{font-size:.78rem;color:var(--plum-dark);text-align:center;margin-bottom:6px}
#ads{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}

.flow-shell{display:grid;grid-template-columns:minmax(0,1fr) 230px;gap:38px;max-width:1140px;margin:0 auto;padding:28px 20px 44px}
.flow-body{min-width:0}

.flow-intro{
  background:linear-gradient(145deg,var(--plum-dark) 0%,var(--plum) 45%,var(--rose) 100%);
  border-radius:20px 20px 20px 4px;padding:36px 32px 32px;margin-bottom:38px;color:#fff;
  scroll-margin-top:92px;position:relative;overflow:hidden
}
.flow-intro::after{
  content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;
  border-radius:50%;background:rgba(255,255,255,.08);pointer-events:none
}
.flow-intro .flow-badge{
  display:inline-block;font-size:.76rem;font-weight:700;color:var(--plum-dark);
  background:#fff;padding:5px 15px;border-radius:999px;margin-bottom:14px;position:relative;z-index:1
}
.flow-intro h1{
  font-size:clamp(1.32rem,3.5vw,1.82rem);line-height:1.34;margin-bottom:14px;color:#fff;
  position:relative;z-index:1
}
.flow-intro .flow-lede{color:#ede9fe;font-size:1.01rem;margin-bottom:10px;text-align:justify;position:relative;z-index:1}
.flow-intro .flow-lede:last-of-type{margin-bottom:0}
.flow-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;position:relative;z-index:1}
.flow-chips span{
  font-size:.78rem;padding:5px 13px;border-radius:999px;
  background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.32)
}

.flow-track{list-style:none;position:relative;padding:10px 0 14px}
.flow-track::before{
  content:"";position:absolute;left:24px;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--plum),var(--rose) 65%,var(--plum-soft));
  border-radius:3px
}

.flow-node{position:relative;padding:0 0 38px 68px;scroll-margin-top:92px}
.flow-node::before{
  content:attr(data-step);position:absolute;left:0;top:2px;width:48px;height:48px;
  background:var(--plum-dark);color:#fff;border-radius:50%;display:flex;align-items:center;
  justify-content:center;font-size:.8rem;font-weight:700;line-height:48px;text-align:center;
  box-shadow:0 0 0 5px var(--plum-soft),0 4px 14px rgba(91,33,182,.28);z-index:2
}
.flow-node:nth-child(even)::before{background:var(--rose)}
.flow-card{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px 28px;
  box-shadow:0 8px 24px rgba(124,58,237,.06);transition:transform .18s,box-shadow .18s
}
.flow-card:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(124,58,237,.1)}
.flow-card h2{font-size:1.15rem;margin-bottom:12px;color:var(--plum-dark);line-height:1.38}
.flow-card p{margin-bottom:11px;color:#374151;text-align:justify;font-size:.97rem}
.flow-card figure{margin:18px 0 6px;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:var(--plum-soft)}
.flow-card figcaption{font-size:.84rem;color:var(--muted);padding:10px 14px;background:var(--rose-soft)}
.flow-note{
  background:var(--plum-soft);border-left:5px solid var(--rose);padding:14px 18px;
  margin:14px 0;border-radius:0 12px 12px 0;font-size:.93rem;color:#444
}
.flow-checklist{list-style:none;margin:12px 0 4px}
.flow-checklist li{
  position:relative;padding:8px 0 8px 28px;font-size:.95rem;color:#444;
  border-bottom:1px dashed var(--line)
}
.flow-checklist li:last-child{border-bottom:none}
.flow-checklist li::before{
  content:"";position:absolute;left:0;top:14px;width:14px;height:14px;
  border-radius:4px;background:var(--plum-soft);border:2px solid var(--plum)
}

.flow-faq{margin-top:16px;padding-top:30px;border-top:2px solid var(--plum);scroll-margin-top:92px}
.flow-faq>h2{font-size:1.14rem;margin-bottom:18px;color:var(--plum-dark)}
.faq-item{border:1px solid var(--line);margin-bottom:10px;background:#fff;border-radius:12px;overflow:hidden}
.faq-item h3{padding:14px 18px;font-size:.96rem;font-weight:600;color:var(--ink);background:var(--plum-soft);border-bottom:1px solid var(--line)}
.faq-item p{padding:14px 18px;color:#444;font-size:.94rem}

.flow-rail{
  position:sticky;top:92px;align-self:start;
  background:linear-gradient(180deg,var(--plum-soft) 0%,#fff 100%);
  border:2px solid var(--plum);border-radius:16px;padding:22px 18px;
  box-shadow:0 10px 28px rgba(124,58,237,.1)
}
.flow-rail h2{font-size:.84rem;color:var(--plum-dark);margin-bottom:14px;letter-spacing:.02em}
.flow-rail ol{list-style:none;counter-reset:flownav}
.flow-rail li{counter-increment:flownav;margin-bottom:10px}
.flow-rail a{font-size:.84rem;color:var(--plum);display:block;padding:4px 0;line-height:1.38;transition:color .15s}
.flow-rail a::before{
  content:counter(flownav);display:inline-flex;align-items:center;justify-content:center;
  width:20px;height:20px;margin-right:7px;font-size:.7rem;font-weight:700;color:#fff;
  background:var(--plum);border-radius:50%;vertical-align:middle
}
.flow-rail a.is-active{color:var(--rose);font-weight:600;text-decoration:none}
.flow-rail a.is-active::before{background:var(--rose)}

.related-strip{max-width:1140px;margin:0 auto;padding:0 20px 48px}
.related-strip h2{font-size:1.04rem;margin-bottom:12px;color:var(--plum-dark)}
.related-strip ul{list-style:none;display:flex;flex-wrap:wrap;gap:10px 20px}
.related-strip a{font-size:.92rem}

.site-footer{background:var(--plum-soft);border-top:2px solid var(--plum);padding:28px 20px;text-align:center;font-size:.88rem;color:var(--muted)}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 16px;margin-bottom:10px}
.footer-links a{color:#57534e}
.footer-sub{font-size:.82rem;color:var(--plum-dark);margin-top:6px}

.prose-page{max-width:780px;margin:0 auto;padding:32px 20px 48px}
.prose-page h1{font-size:1.4rem;margin-bottom:16px;color:var(--plum-dark)}
.prose-page p{margin-bottom:12px;color:#444}

.error-page{max-width:560px;margin:80px auto;padding:20px;text-align:center}
.error-page h1{font-size:3rem;color:var(--plum-dark);margin-bottom:12px}

@media(max-width:880px){
  .flow-shell{grid-template-columns:1fr}
  .flow-rail{order:-1;position:static;margin-bottom:10px}
  .nav-toggle{display:flex}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
    padding:12px 20px;display:none;box-shadow:0 6px 16px rgba(0,0,0,.06)
  }
  .site-nav.is-open{display:block}
  .site-nav ul{flex-direction:column;gap:10px}
  .flow-node{padding-left:58px}
  .flow-node::before{width:42px;height:42px;line-height:42px;font-size:.74rem}
  .flow-track::before{left:19px}
  .flow-intro h1{font-size:1.28rem}
}