*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --void:#0b0710;
  --velvet:#160f1c;
  --wine:#2a1524;
  --copper:#c9783a;
  --amber:#e8a948;
  --lilac:#b794f6;
  --rose:#e84393;
  --pearl:#efe4f2;
  --smoke:#9a8aa4;
  --edge:rgba(232,169,72,.16);
  --glow:rgba(232,67,147,.28);
  --nav-h:56px;
  --pin-h:0px;
  --wrap:1060px;
  --r:12px;
}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
  background:var(--void);
  color:var(--pearl);
  line-height:1.82;
  min-height:100vh;
  overflow-x:hidden;
}
a{color:var(--amber);text-decoration:none;transition:color .2s}
a:hover{color:var(--rose)}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 16px}

/* top bar */
.topbar{
  position:sticky;top:0;z-index:900;
  background:rgba(11,7,16,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--edge);
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:var(--nav-h);gap:10px;
}
.logo-link{
  display:flex;align-items:center;gap:9px;
  color:var(--pearl);font-weight:700;font-size:1rem;
}
.logo-link img{width:36px;height:36px;border-radius:9px}
.nav-list{display:flex;gap:4px;list-style:none;flex-wrap:wrap}
.nav-list a{
  display:block;padding:7px 11px;border-radius:20px;
  color:var(--smoke);font-size:.86rem;
}
.nav-list a:hover,.nav-list a.cur{
  color:var(--pearl);background:rgba(201,120,58,.14);
}
.burger{
  display:none;width:40px;height:40px;border:0;background:transparent;cursor:pointer;
}
.burger i{
  display:block;width:20px;height:2px;background:var(--pearl);margin:5px auto;
  transition:transform .25s,opacity .25s;
}
.burger.open i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open i:nth-child(2){opacity:0}
.burger.open i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mob-nav{
  display:none;position:absolute;left:0;right:0;top:var(--nav-h);
  background:var(--velvet);border-bottom:1px solid var(--edge);padding:10px 0;
}
.mob-nav.show{display:block}
.mob-nav ul{list-style:none}
.mob-nav a{display:block;padding:11px 20px;color:var(--smoke);font-size:.94rem}
.mob-nav a:hover,.mob-nav a.cur{color:var(--amber);background:rgba(232,67,147,.07)}

/* ads */
.ad-dock{
  position:fixed;left:0;right:0;top:var(--nav-h);z-index:850;
  background:rgba(22,15,28,.97);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--edge);
  transform:translateY(-110%);opacity:0;pointer-events:none;
  transition:transform .28s,opacity .28s;
}
.ad-dock.on{transform:translateY(0);opacity:1;pointer-events:auto}
body.pinned{--pin-h:86px}
.ad-zone{padding:12px 0}
.ad-grid{
  display:flex;flex-wrap:wrap;justify-content:center;align-items:flex-start;
  gap:8px 4px;
}
.ad-grid>div{
  display:flex;flex-direction:column;align-items:center;
  width:calc(12.5% - 4px);min-width:68px;max-width:78px;
}
.ad-grid img{
  width:56px;height:56px;object-fit:cover;border-radius:15px;
  box-shadow:0 4px 14px var(--glow);
  transition:transform .18s,box-shadow .18s;
}
.ad-grid a{display:inline-block;border-radius:14px}
.ad-grid img:hover{transform:translateY(-3px) scale(1.03);box-shadow:0 8px 20px var(--glow)}
.ad-grid .caption{
  height:15px;margin-top:4px;font-size:11px;color:var(--smoke);
  text-align:center;max-width:76px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* hero */
.banner{
  position:relative;padding:48px 0 40px;overflow:hidden;
  background:linear-gradient(155deg,var(--wine) 0%,var(--void) 55%,#120a18 100%);
}
.banner::before{
  content:"";position:absolute;top:-80px;right:-60px;
  width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(232,67,147,.22),transparent 70%);
  pointer-events:none;
}
.banner::after{
  content:"";position:absolute;bottom:-100px;left:-40px;
  width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,120,58,.18),transparent 70%);
  pointer-events:none;
}
.banner-inner{position:relative;z-index:1}
.ribbon{
  display:inline-block;padding:5px 14px;border-radius:20px;
  background:rgba(183,148,246,.12);border:1px solid rgba(183,148,246,.3);
  color:var(--lilac);font-size:.78rem;letter-spacing:.04em;margin-bottom:14px;
}
.banner h1{
  font-size:clamp(1.55rem,4.8vw,2.15rem);
  font-weight:800;line-height:1.35;margin-bottom:16px;
  background:linear-gradient(92deg,var(--pearl),var(--amber));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.banner-lead{font-size:.98rem;color:var(--smoke);max-width:720px}
.kw-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;list-style:none}
.kw-tags li{
  padding:5px 12px;border-radius:16px;font-size:.76rem;
  background:rgba(201,120,58,.1);color:var(--copper);border:1px solid var(--edge);
}

/* sections */
.block{padding:44px 0}
.block.tint{background:linear-gradient(180deg,rgba(42,21,36,.45),transparent)}
.block-head{margin-bottom:28px}
.block-head h2{
  font-size:clamp(1.25rem,3.5vw,1.65rem);font-weight:700;margin-bottom:8px;
}
.block-head p{color:var(--smoke);font-size:.92rem}
.copy p{margin-bottom:14px;color:rgba(239,228,242,.92);font-size:.95rem}
.copy h3{
  font-size:1.08rem;margin:22px 0 10px;color:var(--amber);
  padding-left:12px;border-left:3px solid var(--rose);
}
.copy ul,.copy ol{margin:10px 0 16px 20px;color:rgba(239,228,242,.88)}
.copy li{margin-bottom:6px}

/* editorial 3:7 layout */
.editorial{display:grid;gap:28px}
.editorial .copy{order:1}
.editorial .fig-side{order:2}
@media(min-width:768px){
  .editorial{
    grid-template-columns:7fr 3fr;align-items:start;
  }
  .editorial.flip .fig-side{order:0}
  .editorial.flip .copy{order:1}
}
.fig-card{
  border-radius:var(--r);overflow:hidden;
  border:1px solid var(--edge);
  background:var(--velvet);
  box-shadow:0 12px 36px rgba(0,0,0,.35);
}
.fig-card img{width:100%;aspect-ratio:9/16;object-fit:cover}
.fig-cap{padding:10px 12px;font-size:.8rem;color:var(--smoke);text-align:center}

/* feature grid */
.feat-grid{
  display:grid;gap:16px;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
}
.feat-item{
  padding:20px;border-radius:var(--r);
  background:linear-gradient(145deg,rgba(42,21,36,.6),rgba(22,15,28,.8));
  border:1px solid var(--edge);
}
.feat-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:50%;
  background:linear-gradient(135deg,var(--copper),var(--rose));
  font-size:.82rem;font-weight:700;margin-bottom:10px;
}
.feat-item h3{font-size:1rem;margin-bottom:8px;color:var(--pearl)}
.feat-item p{font-size:.88rem;color:var(--smoke);line-height:1.7}

/* steps */
.step-row{display:grid;gap:14px}
.step{
  display:flex;gap:14px;padding:16px;border-radius:var(--r);
  background:rgba(22,15,28,.7);border:1px solid var(--edge);
}
.step-mark{
  flex-shrink:0;width:36px;height:36px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(183,148,246,.15);color:var(--lilac);font-weight:700;font-size:.9rem;
}
.step-body h4{font-size:.95rem;margin-bottom:4px}
.step-body p{font-size:.86rem;color:var(--smoke)}

/* cta */
.cta-band{
  margin:36px 0;padding:28px 22px;border-radius:var(--r);
  text-align:center;
  background:linear-gradient(120deg,rgba(201,120,58,.15),rgba(232,67,147,.12));
  border:1px solid var(--edge);
}
.cta-band h3{font-size:1.1rem;margin-bottom:8px}
.cta-band p{font-size:.88rem;color:var(--smoke);margin-bottom:16px}
.btn-glow{
  display:inline-block;padding:11px 28px;border-radius:24px;
  background:linear-gradient(95deg,var(--copper),var(--rose));
  color:#fff;font-weight:600;font-size:.92rem;
  box-shadow:0 6px 22px var(--glow);
  transition:transform .2s,box-shadow .2s;
}
.btn-glow:hover{color:#fff;transform:translateY(-2px);box-shadow:0 10px 28px var(--glow)}

/* faq */
.faq-list{display:grid;gap:12px}
.faq-item{
  padding:16px 18px;border-radius:var(--r);
  background:rgba(22,15,28,.65);border:1px solid var(--edge);
}
.faq-item h4{font-size:.94rem;margin-bottom:6px;color:var(--amber)}
.faq-item p{font-size:.86rem;color:var(--smoke)}

/* sub pages */
.page-hero{padding:32px 0 24px;border-bottom:1px solid var(--edge)}
.page-hero h1{font-size:clamp(1.3rem,4vw,1.75rem);margin-bottom:6px}
.page-hero p{color:var(--smoke);font-size:.9rem}
.crumb{
  display:flex;flex-wrap:wrap;gap:6px;align-items:center;
  font-size:.82rem;color:var(--smoke);margin-bottom:14px;
}
.crumb a{color:var(--smoke)}
.crumb a:hover{color:var(--amber)}
.crumb span{color:var(--smoke)}
.legal{padding:32px 0 48px}
.legal h2{font-size:1.12rem;margin:24px 0 10px;color:var(--amber)}
.legal h3{font-size:1rem;margin:18px 0 8px;color:var(--lilac)}
.legal p,.legal li{font-size:.9rem;color:rgba(239,228,242,.88);margin-bottom:10px}
.legal ul,.legal ol{margin-left:20px}

/* error pages */
.err-page{
  min-height:calc(100vh - var(--nav-h) - 120px);
  display:flex;align-items:center;justify-content:center;
  padding:40px 16px;text-align:center;
}
.err-code{
  font-size:4.5rem;font-weight:800;line-height:1;
  background:linear-gradient(135deg,var(--copper),var(--lilac));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.err-page h1{font-size:1.3rem;margin:12px 0 8px}
.err-page p{color:var(--smoke);font-size:.9rem;margin-bottom:20px}
.err-links{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.err-links a{
  padding:9px 20px;border-radius:20px;font-size:.88rem;
  border:1px solid var(--edge);color:var(--pearl);
}
.err-links a:first-child{background:linear-gradient(95deg,var(--copper),var(--rose));border:0}

/* footer */
.foot{
  margin-top:48px;padding:28px 0 36px;
  border-top:1px solid var(--edge);
  background:rgba(11,7,16,.6);
}
.foot-grid{
  display:grid;gap:20px;
  grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
}
.foot h4{font-size:.88rem;margin-bottom:10px;color:var(--amber)}
.foot ul{list-style:none}
.foot li{margin-bottom:6px}
.foot a{color:var(--smoke);font-size:.84rem}
.foot a:hover{color:var(--amber)}
.foot-copy{
  margin-top:22px;padding-top:16px;border-top:1px solid var(--edge);
  font-size:.78rem;color:var(--smoke);text-align:center;
}

/* prose panels */
.prose-panel{
  padding:24px 22px;border-radius:var(--r);
  background:rgba(22,15,28,.55);border:1px solid var(--edge);
  margin-bottom:18px;
}
.prose-panel h3{font-size:1.02rem;margin-bottom:10px;color:var(--lilac)}
.prose-panel p{font-size:.92rem;color:rgba(239,228,242,.9);margin-bottom:10px}
.prose-panel p:last-child{margin-bottom:0}
.prose-columns{
  display:grid;gap:16px;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
}
.scene-grid{
  display:grid;gap:14px;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
}
.scene-card{
  padding:18px;border-radius:var(--r);
  background:linear-gradient(160deg,rgba(42,21,36,.5),rgba(11,7,16,.8));
  border:1px solid var(--edge);
}
.scene-card h4{font-size:.94rem;margin-bottom:8px;color:var(--amber)}
.scene-card p{font-size:.86rem;color:var(--smoke);line-height:1.72}
.kw-hub{
  display:flex;flex-wrap:wrap;gap:10px;list-style:none;
}
.kw-hub a{
  display:inline-block;padding:7px 14px;border-radius:18px;
  font-size:.82rem;color:var(--smoke);
  background:rgba(201,120,58,.08);border:1px solid var(--edge);
}
.kw-hub a:hover{color:var(--pearl);background:rgba(232,67,147,.12)}
.compare-table{
  width:100%;border-collapse:collapse;font-size:.86rem;margin:16px 0;
}
.compare-table th,.compare-table td{
  padding:10px 12px;border:1px solid var(--edge);text-align:left;
}
.compare-table th{background:rgba(201,120,58,.12);color:var(--amber);font-weight:600}
.compare-table td{color:var(--smoke)}

@media(max-width:767px){
  .nav-list{display:none}
  .burger{display:block}
  .ad-grid>div{width:calc(25% - 4px)}
  .banner{padding:36px 0 30px}
  .block{padding:32px 0}
}