*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --ink:#1e1033;--muted:#5b5568;--line:#e8dff5;
  --plum:#7c3aed;--plum-soft:#f5f3ff;--rose:#e11d48;--rose-soft:#fff1f2;
  --gold:#d97706;--header-h:58px;--content:860px;--card-radius:14px;
}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC",system-ui,sans-serif;color:var(--ink);background:#fff;line-height:1.78;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--plum);text-decoration:none}
a:hover{text-decoration:underline}

.site-header{position:sticky;top:0;z-index:300;background:#fff;border-bottom:3px solid var(--plum)}
.header-inner{max-width:980px;margin:0 auto;padding:0 1rem;display:flex;align-items:center;justify-content:space-between;min-height:var(--header-h)}
.brand{display:flex;align-items:center;gap:.65rem;color:var(--ink);font-size:.9rem;text-decoration:none}
.brand:hover{text-decoration:none}
.brand em{font-style:normal;font-weight:700;color:var(--plum)}
.brand span{line-height:1.3;max-width:360px}

.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:.5rem;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);transition:transform .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)}

.site-nav ul{display:flex;gap:1rem;list-style:none}
.site-nav a{color:var(--muted);font-size:.88rem;text-decoration:none}
.site-nav a:hover,.site-nav a.active{color:var(--plum);font-weight:600}

.ads-top-bar{background:var(--plum-soft);border-bottom:1px solid var(--line);padding:.5rem 0}
#applist{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.applist-title{font-size:.78rem;color:var(--muted);white-space:nowrap}
#ads{display:flex;gap:.75rem;flex-wrap:wrap}
.ads-item figure{margin:0;text-align:center}
.ads-item img{border-radius:8px}
.ads-item .caption{font-size:.68rem;color:var(--muted);margin-top:.2rem;max-width:65px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.page-wrap{max-width:var(--content);margin:0 auto;padding:2rem 1.25rem 4rem}

.hero-panel{
  position:relative;overflow:hidden;
  background:radial-gradient(ellipse 80% 60% at 12% 20%,var(--rose-soft),transparent 55%),
             radial-gradient(ellipse 70% 50% at 88% 80%,var(--plum-soft),transparent 50%),#fff;
  border:1px solid var(--line);border-radius:20px;
  padding:2.1rem 1.9rem 1.85rem;margin-bottom:2rem;
}
.hero-panel::after{
  content:"";position:absolute;right:-40px;top:-40px;width:140px;height:140px;
  border-radius:50%;border:3px dashed var(--line);opacity:.55;pointer-events:none;
}
.hero-tag{
  display:inline-block;font-size:.76rem;font-weight:600;color:var(--rose);
  background:#fff;border:1px solid var(--rose);padding:.24rem .8rem;border-radius:999px;margin-bottom:.9rem;
}
.hero-panel h1{font-size:1.62rem;line-height:1.36;font-weight:700;margin-bottom:.85rem;color:var(--ink);max-width:680px;position:relative;z-index:1}
.hero-lead{font-size:1rem;color:var(--muted);margin-bottom:.65rem;text-align:justify;max-width:720px;position:relative;z-index:1}
.hero-chips{display:flex;flex-wrap:wrap;gap:.45rem;margin-top:1.15rem;position:relative;z-index:1}
.hero-chips span{font-size:.76rem;background:#fff;border:1px solid var(--line);color:var(--muted);padding:.24rem .7rem;border-radius:999px}

.section-jump{
  display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.65rem;
  padding:.85rem 1rem;background:var(--plum-soft);border-radius:12px;border:1px solid var(--line);
}
.section-jump a{font-size:.81rem;color:var(--muted);background:#fff;padding:.34rem .78rem;border-radius:999px;border:1px solid var(--line)}
.section-jump a:hover{color:var(--plum);text-decoration:none;border-color:var(--plum)}

.deck-zone{
  position:relative;padding:2rem 0 4rem;perspective:1400px;min-height:420px;
}
.deck-card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-top:4px solid var(--plum);border-radius:var(--card-radius);
  padding:1.6rem 1.7rem 1.5rem;margin-bottom:-2.35rem;
  box-shadow:var(--shadow,0 6px 22px rgba(124,58,237,.07));
  transform:rotate(var(--rot,0deg)) translateY(var(--lift,0)) scale(var(--scale,1));
  transform-origin:center 120%;transition:transform .34s ease,box-shadow .34s ease,border-color .34s;
  z-index:var(--z,1);cursor:pointer;
}
.deck-card:last-child{margin-bottom:0}
.deck-card:nth-child(1){--rot:-2.2deg;--scale:.993}
.deck-card:nth-child(2){--rot:1.8deg;--scale:.986}
.deck-card:nth-child(3){--rot:-1.4deg;--scale:.979}
.deck-card:nth-child(4){--rot:2.6deg;--scale:.972}
.deck-card:nth-child(5){--rot:-0.8deg;--scale:.965}
.deck-card:nth-child(6){--rot:1.2deg;--scale:.958}
.deck-card:nth-child(7){--rot:-2deg;--scale:.951}
.deck-card:nth-child(8){--rot:0.6deg;--scale:.944}
.deck-card:nth-child(9){--rot:-1deg;--scale:.937}
.deck-card:nth-child(10){--rot:1.5deg;--scale:.93}
.deck-card.is-front{
  --rot:0deg;--scale:1;--lift:-12px;
  z-index:90!important;
  --shadow:0 24px 56px rgba(225,29,72,.14);
  border-top-color:var(--rose);border-color:#fecdd3;
}
.deck-card:focus{outline:2px solid var(--plum);outline-offset:3px}
.deck-card:focus:not(:focus-visible){outline:none}

.card-meta{display:flex;align-items:center;gap:.7rem;margin-bottom:.75rem}
.card-step{
  flex-shrink:0;min-width:32px;height:26px;padding:0 .55rem;border-radius:999px;
  background:linear-gradient(135deg,var(--plum),var(--rose));color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:.72rem;font-weight:700;
}
.card-tag{font-size:.71rem;font-weight:600;color:var(--rose);letter-spacing:.04em}
.deck-card h2{font-size:1.08rem;color:var(--ink);margin-bottom:.75rem;font-weight:600;line-height:1.42;padding-bottom:.48rem;border-bottom:2px dotted var(--line)}
.deck-card p{margin-bottom:.92rem;text-align:justify;color:#2d2640}
.deck-card ul{margin:.65rem 0 1rem 1.2rem;color:#2d2640}
.deck-card li{margin-bottom:.4rem}
.deck-card figure{margin:1.15rem 0;border-radius:10px;overflow:hidden;border:1px solid var(--line)}
.deck-card figcaption{font-size:.82rem;color:var(--muted);padding:.55rem .8rem;background:var(--rose-soft);text-align:center}

.note-band{
  background:var(--rose-soft);border-left:4px solid var(--rose);
  padding:.85rem 1.05rem;border-radius:0 8px 8px 0;font-size:.91rem;margin:1rem 0;color:#9f1239;
}

.faq-item{margin-top:1.1rem;padding-top:1rem;border-top:1px dashed var(--line)}
.faq-item h3{font-size:.98rem;color:var(--plum);margin-bottom:.45rem;font-weight:600}
.faq-item p{font-size:.94rem;color:var(--muted)}

.bottom-links{display:flex;flex-wrap:wrap;gap:.65rem;margin-top:2.35rem;padding-top:1.55rem;border-top:1px solid var(--line)}
.bottom-links a{font-size:.86rem;color:var(--muted);background:var(--plum-soft);padding:.38rem .88rem;border-radius:999px;border:1px solid var(--line)}
.bottom-links a:hover{color:var(--plum);text-decoration:none;border-color:var(--plum)}

.prose-page{max-width:var(--content);margin:0 auto;padding:2rem 1.25rem 3rem}
.prose-page h1{font-size:1.48rem;margin-bottom:1rem;color:var(--plum)}
.prose-page p{margin-bottom:.95rem}

.error-page{max-width:var(--content);margin:4rem auto;padding:2rem 1.25rem;text-align:center}
.error-page h1{font-size:3rem;color:var(--plum);margin-bottom:.5rem}

.site-footer{background:var(--plum-soft);border-top:3px solid var(--plum);padding:1.5rem 1rem;text-align:center;font-size:.82rem;color:var(--muted)}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem 1rem;margin-bottom:.65rem}
.footer-links a{color:var(--muted)}
.footer-sub{font-size:.76rem;margin-top:.35rem;color:#888}

@media(max-width:640px){
  .nav-toggle{display:flex}
  .site-nav{position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:.75rem 1rem;display:none;box-shadow:0 4px 14px rgba(0,0,0,.06)}
  .site-nav.is-open{display:block}
  .site-nav ul{flex-direction:column;gap:.5rem}
  .deck-card{margin-bottom:-1.6rem;--rot:0deg!important}
  .deck-card.is-front{--lift:-6px}
  .hero-panel h1{font-size:1.32rem}
}