:root{
  --bg:#f2fbf8;--card:#ffffff;--ink:#0f3d36;--text:#14352f;--muted:#5b7a73;
  --mint:#0d9488;--mint2:#14b8a6;--line:#c7e4dc;--soft:#e7f7f2;--max:880px;
  --font:"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
body{margin:0;font-family:var(--font);background:radial-gradient(1200px 600px at 50% -10%,#d8f5ee 0%,var(--bg) 55%);color:var(--text);line-height:1.8}
a{color:var(--mint);text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.site-header{background:rgba(255,255,255,.88);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}
.wrap{max-width:980px;margin:0 auto;padding:0 1rem}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:58px}
.brand{display:flex;align-items:center;gap:.5rem;color:var(--ink);font-weight:750}
.brand img{border-radius:50%}
.nav-desktop{display:flex;gap:1rem;font-size:.92rem}
.nav-desktop a{color:#2f5d54}
.menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:999px;padding:.35rem .8rem;cursor:pointer;color:var(--ink)}
#mobile-nav{display:none;flex-direction:column;padding:.5rem 1rem 1rem;background:#fff;border-bottom:1px solid var(--line)}
#mobile-nav.open{display:flex}
.stack-hero{text-align:center;padding:2.6rem 1rem 1.6rem;max-width:640px;margin:0 auto}
.stack-hero .hero-logo{margin:0 auto .9rem;border-radius:22px;box-shadow:0 12px 40px rgba(13,148,136,.18)}
.stack-hero h1{margin:0 0 .75rem;font-size:clamp(1.45rem,3.2vw,2.05rem);color:var(--ink);letter-spacing:.01em}
.stack-hero .lead{margin:0 auto;color:var(--muted);font-size:1.05rem;max-width:34rem}
.stack-cta{display:flex;justify-content:center;flex-wrap:wrap;gap:.65rem;margin-top:1.25rem}
.btn{display:inline-block;background:linear-gradient(135deg,var(--mint),var(--mint2));color:#fff;padding:.65rem 1.2rem;border-radius:999px;font-weight:650}
.btn:hover{text-decoration:none;filter:brightness(1.04)}
.btn-quiet{background:#fff;color:var(--mint);border:1px solid var(--line)}
.stack-prose{max-width:var(--max);margin:0 auto;padding:0 1rem 2.8rem}
.stack-prose h2{margin:2rem 0 .7rem;font-size:1.35rem;color:var(--ink);text-align:center}
.stack-prose h3{margin:1.3rem 0 .45rem;font-size:1.08rem;color:#1b4d44}
.stack-prose p{margin:0 0 1rem}
.figure-block{margin:1.2rem auto;max-width:100%}
.figure-block img{border-radius:16px;border:1px solid var(--line);margin:0 auto}
figcaption{text-align:center;font-size:.88rem;color:var(--muted);margin-top:.45rem}
.pill-list{list-style:none;padding:0;margin:1rem 0;display:grid;gap:.55rem}
.pill-list li{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:.75rem 1rem}
.peers{display:flex;justify-content:center;flex-wrap:wrap;gap:.75rem 1.2rem;list-style:none;padding:0;margin:1.2rem 0}
.peers a{font-weight:650}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:.7rem 1rem;margin:.55rem 0}
.faq summary{cursor:pointer;font-weight:650;color:var(--ink)}
.site-footer{background:#0f3d36;color:#b7d4cd;padding:1.5rem 0;font-size:.9rem;text-align:center}
.site-footer a{color:#e7f7f2}.foot-note{opacity:.75}
.page-main{padding:1.5rem 0 2.5rem;max-width:var(--max);margin:0 auto}
.page-hero h1{text-align:center;font-size:1.55rem;color:var(--ink)}
.prose p{margin:0 0 1rem}.err-box{padding:3rem 1rem;text-align:center}
.ads-slot{max-width:980px;margin:0 auto}
@media(max-width:820px){
  .nav-desktop{display:none}.menu-toggle{display:inline-block}
  .stack-hero{padding-top:1.8rem}
}


/* SEO keyword highlight */
strong.kw,.kw{
  color:var(--accent,var(--brand,#e86a2c));
  font-weight:800;
}
mark.kw{
  background:color-mix(in srgb, var(--brand,#e86a2c) 16%, transparent);
  color:inherit;
  padding:0 .12em;
  border-radius:3px;
}
h1 .kw,h2 .kw,h3 .kw{color:var(--brand,#e86a2c)}

/* UNIQUE_HAMBURGER_THEME_START */

/* === unique chrome: hamburger-only + theme === */
:root{--bg:#ecfdf7;--paper:#ffffff;--ink:#064e3b;--muted:#4d7c6f;--line:#b7e4d4;--soft:#f0fdf8;--brand:#10b981;--brand2:#34d399;--accent:#059669;--header-bg:#ffffffcc;--radius:24px;--shadow:0 16px 32px rgba(16,185,129,.1);--font:"Century Gothic","PingFang SC","Microsoft YaHei",sans-serif;}
body{font-family:var(--font)}
.site-header{
  position:sticky;top:0;z-index:50;
  background:var(--header-bg, var(--paper));
  color:var(--ink);
  border-bottom:1px solid var(--line);
}
.site-header .brand{color:var(--ink)}
.site-header .brand span{color:var(--ink)}
.nav-desktop{display:none!important}
.menu-toggle{display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;padding:0;cursor:pointer;
  border:1px solid var(--line);background:transparent;color:inherit;
  border-radius:var(--radius);
}
.menu-toggle .burger{
  width:20px;height:14px;display:flex;flex-direction:column;justify-content:space-between;
}
.menu-toggle .burger i{
  display:block;height:2px;width:100%;background:currentColor;border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.menu-toggle[aria-expanded="true"] .burger i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] .burger i:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] .burger i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
#mobile-nav{
  display:none;flex-direction:column;gap:.25rem;
  padding:.65rem 1rem 1rem;border-top:1px solid var(--line);
  background:var(--paper);color:var(--ink);
}
#mobile-nav.open{display:flex}
#mobile-nav a{
  padding:.7rem .55rem;border-radius:calc(var(--radius) / 2);
  color:var(--ink);font-weight:700;
}
#mobile-nav a:hover{background:color-mix(in srgb, var(--brand) 12%, transparent)}
.theme-mint-center .site-header{/* marker */}

.menu-toggle{border-radius:999px;border-color:var(--brand);color:var(--brand)}
/* UNIQUE_HAMBURGER_THEME_END */

/* DESKTOP_ADAPT_START */


html{ -webkit-text-size-adjust:100%; }
img,video{ max-width:100%; height:auto; }
.header-inner,.wrap,.site-main,.footer-inner,.ads-head{
  width:100%;
  margin-left:auto;margin-right:auto;
  box-sizing:border-box;
}
.header-inner{
  max-width:var(--desk-max, var(--max, 1120px));
  padding:.85rem clamp(1rem, 3vw, 1.75rem);
  min-height:64px;
}
.site-main,.wrap,.footer-inner,.ads-head{
  max-width:var(--desk-max, var(--max, 1120px));
  padding-left:clamp(1rem, 3vw, 1.75rem);
  padding-right:clamp(1rem, 3vw, 1.75rem);
}
@media (min-width:1280px){
  :root{ --desk-max:1240px; }
  body{ font-size:17.5px; }
}
@media (min-width:1440px){
  :root{ --desk-max:1320px; }
}



@media (min-width:901px){
  :root{ --max:900px; --desk-max:1000px; }
  .stack-hero{ text-align:center; padding:2.75rem 1rem 1.75rem; }
  .stack-prose,.stack-hero .lead{ max-width:780px; margin-left:auto; margin-right:auto; }
  .stack-prose .figure-block{ max-width:860px; margin:1.25rem auto; }
  .pill-list{ display:flex; flex-wrap:wrap; justify-content:center; gap:.55rem; }
}

/* DESKTOP_ADAPT_END */

/* DESKTOP_ADAPT_PATCH */
@media (max-width:900px){
  #mobile-nav.open{
    flex-direction:column!important;
    align-items:stretch!important;
    justify-content:flex-start!important;
  }
  .header-inner,.site-main,.wrap,.footer-inner,.ads-head{
    padding-left:1rem;
    padding-right:1rem;
  }
}
@media (min-width:901px){
  .ads-head .ads-wrap{ max-width:100%; }
  #ads{ justify-content:center; gap:16px 20px; }
  /* cinema full-bleed frames stay edge-to-edge */
  body[data-template="cinema"] .cine-frame{
    width:100vw;
    margin-left:calc(50% - 50vw);
    margin-right:calc(50% - 50vw);
  }
  body[data-template="dark-band"] .band-hero,
  body[data-template="dark-band"] .band-dark,
  body[data-template="dark-band"] .band-light{
    width:100%;
  }
}


/* UNIQUE_VISUAL_SKIN_START */
body{
  background:
    radial-gradient(circle at 50% 0%, rgba(16,185,129,.16), transparent 42%),
    #e9fbf4 !important;
}
.stack-hero{
  background:#fff!important;border-radius:32px!important;padding:2.4rem 1.4rem!important;
  box-shadow:0 22px 50px rgba(16,185,129,.12)!important;border:1px solid #b7e4d4!important;
  max-width:820px;margin:1.25rem auto 1rem!important;
}
.hero-logo{border-radius:24px!important;box-shadow:0 10px 24px rgba(16,185,129,.2)!important}
.stack-prose{
  background:rgba(255,255,255,.86)!important;border-radius:28px!important;
  padding:1.5rem!important;border:1px solid #c7ebe0!important;
  max-width:860px;margin:0 auto 1.25rem!important;
}
.pill-list span,.pill-list a{
  background:#10b981!important;color:#fff!important;border-radius:999px!important;padding:.35rem .75rem!important;
}
.site-footer{background:transparent!important;border:0!important;text-align:center!important}
/* UNIQUE_VISUAL_SKIN_END */


/* DESKTOP_NAV_TOP_START */
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  flex-wrap:nowrap;
}
#mobile-nav{
  display:none;
  flex-direction:column;
  gap:.25rem;
  width:100%;
  order:3;
  padding:.55rem 0 .85rem;
  border-top:1px solid var(--line, #e5e5e5);
  background:var(--paper, #fff);
}
#mobile-nav.open{display:flex}
.menu-toggle{display:inline-flex}

@media (min-width:901px){
  .menu-toggle{display:none!important}
  .header-inner{flex-wrap:nowrap;align-items:center}
  #mobile-nav,
  #mobile-nav.open{
    display:flex!important;
    flex-direction:row!important;
    flex-wrap:wrap;
    align-items:center;
    justify-content:flex-end;
    gap:.15rem .75rem;
    width:auto;
    max-width:none;
    order:0;
    margin-left:auto;
    margin-right:0;
    padding:0!important;
    border:0!important;
    background:transparent!important;
    box-shadow:none!important;
  }
  #mobile-nav a{
    padding:.35rem .45rem!important;
    white-space:nowrap;
    border-radius:0!important;
    background:transparent!important;
    color:inherit!important;
    font-weight:700;
  }
  #mobile-nav a:hover{
    color:var(--brand, var(--accent))!important;
    background:transparent!important;
    text-decoration:underline;
  }
}
@media (max-width:900px){
  .header-inner{flex-wrap:wrap}
  .menu-toggle{display:inline-flex!important;margin-left:auto}
  #mobile-nav{
    display:none;
    width:100%;
    order:3;
    flex-direction:column!important;
    align-items:stretch!important;
  }
  #mobile-nav.open{display:flex!important}
}
/* DESKTOP_NAV_TOP_END */