*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC",system-ui,sans-serif;background:#fff;color:#1a1a1a;line-height:1.78;font-size:16px}
a{color:#ad1457;text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.site-header{background:#fff;border-bottom:2px solid #f8bbd0;position:sticky;top:0;z-index:200}
.header-inner{max-width:940px;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:.95rem}
.brand em{font-style:normal;color:#ad1457;font-weight:700}
.site-nav ul{display:flex;flex-wrap:wrap;gap:6px 18px;list-style:none}
.site-nav a{color:#555;font-size:.9rem;padding:4px 0}
.site-nav a.active,.site-nav a:hover{color:#ad1457;font-weight:600;border-bottom:2px solid #ad1457;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:#fafafa;border-bottom:1px solid #eee;padding:10px 0}
.applist-title{font-size:.78rem;color:#888;text-align:center;margin-bottom:6px}
#ads{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}
.hero-arc{max-width:940px;margin:0 auto;padding:40px 20px 36px;text-align:center;position:relative}
.hero-arc::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse 80% 60% at 50% 0%,#fce4ec 0%,transparent 70%);pointer-events:none;z-index:0}
.hero-arc>*{position:relative;z-index:1}
.hero-arc .tag{display:inline-block;font-size:.76rem;color:#ad1457;border:1px solid #f48fb1;padding:4px 14px;border-radius:999px;margin-bottom:14px}
.hero-arc h1{font-size:1.75rem;line-height:1.35;margin-bottom:16px;color:#111;max-width:800px;margin-left:auto;margin-right:auto}
.hero-arc .lead{color:#333;margin-bottom:12px;font-size:1.02rem;text-align:justify;max-width:800px;margin-left:auto;margin-right:auto}
.arc-body{max-width:940px;margin:0 auto;padding:0 20px 48px}
.arc-section{margin-bottom:36px;padding:28px 32px;background:#fff;border:1px solid #f8bbd0;border-radius:24px 24px 24px 4px;position:relative;scroll-margin-top:80px}
.arc-section:nth-child(even){border-radius:24px 24px 4px 24px;margin-left:24px}
.arc-section:nth-child(odd){margin-right:24px}
.arc-section h2{font-size:1.12rem;margin-bottom:14px;color:#880e4f;padding-left:12px;border-left:4px solid #ad1457}
.arc-section p{margin-bottom:12px;color:#333;text-align:justify;font-size:.96rem}
.arc-section figure{margin:16px 0;border:1px solid #fce4ec;border-radius:12px;overflow:hidden}
.arc-section figcaption{font-size:.8rem;color:#666;padding:8px 12px;background:#fce4ec}
.dorm-box{margin:14px 0;padding:14px 18px;background:#fce4ec;border-radius:12px;font-size:.93rem;color:#880e4f}
.arc-closer{max-width:940px;margin:0 auto;padding:0 20px 40px}
.arc-closer-inner{padding:28px;background:linear-gradient(135deg,#fce4ec,#fff);border:1px solid #f8bbd0;border-radius:20px}
.arc-closer h2{font-size:1.1rem;margin-bottom:12px;text-align:center;color:#111}
.arc-closer p{margin-bottom:10px;font-size:.95rem;color:#333;text-align:justify}
.site-footer{background:#fafafa;border-top:1px solid #eee;padding:28px 20px;text-align:center;font-size:.88rem;color:#666}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-bottom:10px}
.footer-sub{font-size:.8rem;color:#999;margin-top:4px}
.prose-page{max-width:760px;margin:0 auto;padding:32px 20px 48px}
.prose-page h1{font-size:1.5rem;margin-bottom:16px}
.prose-page p{margin-bottom:12px;color:#333}
@media(max-width:720px){
  .arc-section:nth-child(even),.arc-section:nth-child(odd){margin-left:0;margin-right:0;border-radius:16px}
  .nav-toggle{display:flex}
  .site-nav{position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid #eee;padding:12px 20px;display:none}
  .site-nav.is-open{display:block}
  .site-nav ul{flex-direction:column;gap:10px}
}