:root{
  --bg:#0c1321;
  --card:#121b2d;
  --card-2:#0f1728;
  --text:#e8eefb;
  --muted:#98a2b3;
  --stroke:#2b3a55;

  --brand-1:#6aa7ff;
  --brand-2:#a78bfa;
  --brand-3:#53e0d2;

  --radius:18px;
  --shadow:0 12px 28px rgba(0,0,0,.32), inset 0 1px 0 rgba(255,255,255,.08);

  --page-max:1100px;
  --page-pad:16px;

  --bgmark-center-y:72vh;
  --bgmark-font:10vw;

  --drawer-radius:clamp(12px,2.2vw,18px);
  --drawer-gap:clamp(12px,1.8vw,18px);
  --head-pad-x:clamp(10px,2vw,16px);
  --head-pad-y:clamp(10px,2vw,16px);
  --icon-size:clamp(32px,4vw,42px);
  --chev-size:clamp(22px,3.2vw,28px);
  --title-size:clamp(14px,2.2vw,16px);
  --sub-size:clamp(11px,1.8vw,12px);
  --stage-bottom:clamp(48px,8vw,80px);

  /* ★ 舞台统一“展开大小”（默认兜底），JS 会把它改成“关于我们”的高度 */
  --stage-min-h: clamp(380px, 48vh, 640px);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; color:var(--text);
  background:var(--bg);
  font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  letter-spacing:.2px;
  display:flex; flex-direction:column; min-height:100svh;
}

.page-head{max-width:1100px;margin:42px auto 6px;padding:0 16px}
.page-head h1{margin:0 0 8px;font-size:28px;font-weight:600;letter-spacing:.02em}
.muted{color:var(--muted);font-size:14px}

.brand-bg{position:fixed;inset:0;pointer-events:none;overflow:hidden}
.brand-bg::before,.brand-bg::after{
  content:"xxoo加速器";
  position:absolute;left:50%;top:var(--bgmark-center-y);transform:translate(-50%,-50%);
  font-family:"Noto Serif SC",serif;font-weight:900;font-size:var(--bgmark-font);letter-spacing:.04em;white-space:nowrap;color:#fff;user-select:none
}
.brand-bg::before{
  opacity:.12;text-shadow:0 0 24px rgba(106,167,255,.28),0 0 48px rgba(167,139,250,.22),0 0 80px rgba(83,224,210,.18);
  filter:blur(8px) saturate(115%);animation:glow-breath 6s ease-in-out infinite
}
.brand-bg::after{opacity:.06}
html[data-bgmark="hidden"] .brand-bg::before,html[data-bgmark="hidden"] .brand-bg::after{display:none}
@keyframes glow-breath{0%,100%{opacity:.12;filter:blur(8px) saturate(115%)}50%{opacity:.18;filter:blur(12px) saturate(130%)}}

.grid{max-width:1100px;margin:14px auto 14px;padding:0 16px;display:grid;gap:var(--drawer-gap);grid-template-columns:repeat(4,1fr)}
@media (max-width:1100px){.grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.grid{grid-template-columns:1fr}}

.drawer{
  background:linear-gradient(180deg,var(--card),var(--card-2));
  border:1px solid var(--stroke);
  border-radius:var(--drawer-radius);
  box-shadow:var(--shadow);position:relative;overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease
}
.drawer::before{
  content:"";position:absolute;inset:-1px;border-radius:inherit;pointer-events:none;
  background:linear-gradient(90deg,var(--brand-3),var(--brand-1),var(--brand-2)) border-box;
  -webkit-mask:linear-gradient(#000 0 0) padding-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;border:1px solid transparent;opacity:.28;filter:blur(.2px)
}
.drawer:hover{transform:translateY(-2px)}
.drawer.open{box-shadow:0 20px 46px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.12)}

.head{
  appearance:none;border:0;background:transparent;width:100%;
  padding:var(--head-pad-y) var(--head-pad-x);
  display:flex;align-items:center;gap:12px;cursor:pointer;text-align:left;color:inherit;position:relative;isolation:isolate
}
.icon{
  width:var(--icon-size);height:var(--icon-size);border-radius:50%;flex:0 0 var(--icon-size);
  display:grid;place-items:center;color:#fff;
  background:radial-gradient(120% 120% at 30% 25%,#fff8 0 12%,#0000 42%),conic-gradient(from 210deg at 60% 40%,var(--brand-1),var(--brand-2),var(--brand-1));
  box-shadow:inset 0 1px 0 #ffffff55,0 4px 14px #0006
}
.icon svg{width:calc(var(--icon-size)*.48);height:calc(var(--icon-size)*.48);fill:#fff}
.titles{flex:1 1 auto;min-width:0}
.title{display:block;font-weight:600;font-size:var(--title-size);line-height:1.2}
.sub{display:block;font-size:var(--sub-size);color:var(--muted);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chev{width:var(--chev-size);height:var(--chev-size);border-radius:50%;display:grid;place-items:center;opacity:.65;transition:transform .22s ease,opacity .22s ease,background .22s ease}
.chev svg{width:calc(var(--chev-size)*.5);height:calc(var(--chev-size)*.5);fill:currentColor}
.head:hover .chev{opacity:1;background:#ffffff12}
.drawer.open .chev{transform:rotate(90deg)}
.body{display:none}

/* 舞台：关键最小高度由变量控制（统一 & 动态） */
.stage{max-width:1100px;margin:0 auto var(--stage-bottom);padding:0 16px}
.stage-inner{
  background:linear-gradient(180deg,var(--card),var(--card-2));
  border:1px solid var(--stroke);
  border-radius:calc(var(--drawer-radius) + 2px);
  box-shadow:var(--shadow);
  min-height: var(--stage-min-h, clamp(380px, 48vh, 640px)); /* ★ 替换了旧的 160px */
  padding:20px 22px;
  opacity:0;transform:translateY(8px);
  transition:opacity .28s ease, transform .28s ease, min-height .2s ease
}
.stage.show .stage-inner{opacity:1;transform:translateY(0)}

.stage-head{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.stage-title{font-weight:600;font-size:18px}
.stage-sub{font-size:12px;color:var(--muted)}

/* 舞台正文占满宽度，避免被子样式收窄 */
.stage-content{width:100%}
#stage .stage-inner .panel,
#stage .stage-inner section.panel,
#stage .stage-inner article.panel{
  display:block;width:100%!important;max-width:none!important
}
#stage .stage-inner .panel > *:first-child{margin-top:0}

.bullets{margin:8px 0 0 18px;padding:0}
.bullets li{margin:.2em 0}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:36px;padding:0 14px;border-radius:999px;color:var(--text);text-decoration:none;cursor:pointer;background:linear-gradient(180deg,var(--card-2),var(--card));border:1px solid var(--stroke);box-shadow:var(--shadow);font-weight:700;letter-spacing:.2px}
.btn:hover{filter:brightness(1.05);transform:translateY(-1px);transition:all .18s ease}

.ripple{position:absolute;border-radius:50%;pointer-events:none;aspect-ratio:1;background:radial-gradient(circle,#fff6 0,#fff3 30%,#fff0 60%);transform:scale(0);animation:ripple .6s ease-out forwards;mix-blend-mode:screen}
@keyframes ripple{to{transform:scale(10);opacity:0}}

.plans-grid{grid-auto-rows:1fr;align-items:stretch}
.plans-grid>.plan-card{height:100%;display:flex;flex-direction:column}
.plan-body{display:flex;flex-direction:column;gap:12px;flex:1 1 auto;min-height:0}
.plan-desc{margin-top:2px;text-align:center}
.plan-footer{margin-top:auto;display:flex;flex-direction:column;align-items:center;gap:12px;padding-top:6px}
.price-line{font-size:clamp(16px,2vw,20px);font-weight:700;letter-spacing:.2px;text-align:center;line-height:1.15}
.cta{display:flex;justify-content:center;width:100%;max-width:560px}
.cta .button{height:36px;padding:0 14px}
@supports not (container-type:inline-size){
  @media (max-width:420px){.cta .button{width:100%}}
}

.features{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));align-items:stretch}
.features .feature{position:relative;padding:16px 16px 14px 18px;border:1px solid var(--stroke);border-radius:16px;background:linear-gradient(180deg,var(--card),var(--card-2));box-shadow:0 6px 16px rgba(0,0,0,.18),inset 0 1px 0 rgba(255,255,255,.04);transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}
.features .feature:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.16);box-shadow:0 10px 26px rgba(0,0,0,.26),inset 0 1px 0 rgba(255,255,255,.06)}
.features .feature::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:4px;border-radius:3px;opacity:.95;background:linear-gradient(180deg,var(--brand-1),var(--brand-2))}
.features .feature:nth-child(1)::before{background:linear-gradient(180deg,var(--brand-3),var(--brand-1))}
.features .feature:nth-child(2)::before{background:linear-gradient(180deg,var(--brand-1),var(--brand-2))}
.features .feature:nth-child(3)::before{background:linear-gradient(180deg,var(--brand-2),var(--brand-3))}
.features .feature:nth-child(4)::before{background:linear-gradient(180deg,var(--brand-1),var(--brand-3))}
.features .feature>strong{display:inline-flex;align-items:center;gap:.6em;padding:6px 10px;border:1px solid var(--stroke);border-radius:999px;background:#ffffff0c;font-weight:700;font-size:clamp(15px,1.8vw,17px);letter-spacing:.02em}
.features .feature>p{margin:.65em 0 0;color:var(--muted);font-size:clamp(14px,1.6vw,15px);line-height:1.65;text-indent:0}
@media (max-width:520px){.features .feature{padding:14px 14px 12px 16px}}

#faq.faq .q,#faq.faq .q+p,#faq.faq .q+.dl-nav{margin:0}
#faq.faq .q{position:relative;padding:14px 16px 12px 18px;border:1px solid var(--stroke);border-radius:16px 16px 0 0;background:linear-gradient(180deg,var(--card),var(--card-2));box-shadow:0 6px 16px rgba(0,0,0,.18),inset 0 1px 0 rgba(255,255,255,.04);font-weight:700;font-size:clamp(15px,1.8vw,17px);letter-spacing:.02em;margin-top:16px;transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}
#faq.faq .q::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:4px;border-radius:3px;opacity:.95;background:linear-gradient(180deg,var(--brand-1),var(--brand-2))}
#faq.faq .q:nth-of-type(1)::before{background:linear-gradient(180deg,var(--brand-3),var(--brand-1))}
#faq.faq .q:nth-of-type(2)::before{background:linear-gradient(180deg,var(--brand-1),var(--brand-2))}
#faq.faq .q:nth-of-type(3)::before{background:linear-gradient(180deg,var(--brand-2),var(--brand-3))}
#faq.faq .q:nth-of-type(4)::before{background:linear-gradient(180deg,var(--brand-1),var(--brand-3))}
#faq.faq .q:nth-of-type(5)::before{background:linear-gradient(180deg,var(--brand-2),var(--brand-1))}
#faq.faq .q:hover,#faq.faq .q:hover+p,#faq.faq .q:hover+.dl-nav{border-color:rgba(255,255,255,.16);box-shadow:0 10px 26px rgba(0,0,0,.26),inset 0 1px 0 rgba(255,255,255,.06)}
#faq.faq .q+p,#faq.faq .q+.dl-nav{padding:10px 16px 14px 18px;color:var(--muted);line-height:1.65;border:1px solid var(--stroke);border-top:none;border-radius:0 0 16px 16px;background:linear-gradient(180deg,var(--card),var(--card-2));box-shadow:0 6px 16px rgba(0,0,0,.18),inset 0 1px 0 rgba(255,255,255,.04)}
#faq.faq .q+p.indent{text-indent:0}
#faq.faq .q+.dl-nav{display:flex;flex-wrap:wrap;gap:10px}

.site-footer{width:100%;margin-top:auto}
.site-footer .footer-inner{max-width:1100px;margin:0 auto 28px;padding:12px 16px 0;color:var(--muted);font-size:12px;text-align:center;border-top:1px solid var(--stroke)}

/* === 舞台统一宽度（与“关于我们”一致），高度只随内容 === */
#stage .stage-inner{ min-height:0; }                /* 不强制最小高度 */
#stage .stage-inner .stage-content{ display:block; }/* 保证块级容器 */

/* 舞台里注入的第一层内容块一律铺满容器 */
#stage .stage-inner .stage-content > :where(section,article,div,form){
  display:block !important;
  width:100% !important;
  max-width:none !important;
  box-sizing:border-box;
}

/* 若某些内部块（.panel/.features/.plans-grid/.faq）自带 max-width，统一解除 */
#stage .stage-inner .stage-content :is(.panel,.features,.plans-grid,.faq){
  max-width:none !important;
}

/* === 舞台统一宽度 = 与“关于我们”一致，且只随内容决定高度 === */

/* 舞台外层本就有 max-width:1100px；确保自身也占满 */
.stage{ width:100%; box-sizing:border-box; }

/* 关键：不管谁把它变窄了，这里一律拉满并禁止收窄/浮动/行内块 */
#stage .stage-inner{
  width:100% !important;
  max-width:none !important;
  display:block !important;
  float:none !important;
  clear:both !important;
  box-sizing:border-box;
}

/* 舞台内的第一层内容也统一拉满，避免内部块再把可视宽度收窄 */
#stage .stage-inner .stage-content{
  width:100% !important;
  max-width:none !important;
  display:block !important;
  box-sizing:border-box;
}

/* 如果某些块（.panel / .features / .plans-grid / .faq）自带 max-width，就地解除 */
#stage .stage-inner .stage-content :is(.panel,.features,.plans-grid,.faq){
  max-width:none !important;
  width:100% !important;
  box-sizing:border-box;
}

<!-- ★ 舞台内统一宽度：把任何直接注入的子块拉满（只影响舞台，不影响别处） -->

  /* 舞台壳本身不变，只限定到 stage 内部 */
  #stage .stage-inner .stage-content{ display:block; }
  #stage .stage-inner .stage-content > *{
    box-sizing:border-box;
    width:100% !important;
    max-width:none !important;
    margin-left:0 !important;
    margin-right:0 !important;
  }