*,*::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:1px solid #f0e0e8;position:sticky;top:0;z-index:400}
.header-inner{max-width:1120px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:#111;font-weight:600;font-size:.95rem}
.brand:hover{text-decoration:none}
.brand img{border-radius:8px}
.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{color:#ad1457;font-weight:600;border-bottom:2px solid #ad1457}
.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:#fdf8fa;border-bottom:1px solid #f0e0e8;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}
#ads .caption{font-size:.7rem;color:#666;margin-top:4px;text-align:center;max-width:70px;line-height:1.3}

.wave-shell{max-width:1120px;margin:0 auto;padding:0 20px 56px}

.wave-hero{position:relative;margin:0 -20px 36px;padding:36px 20px 52px;background:linear-gradient(160deg,#fce4ec 0%,#fff 55%);overflow:hidden}
.wave-hero::after{content:"";position:absolute;bottom:0;left:0;right:0;height:28px;background:#fff;clip-path:ellipse(55% 100% at 50% 100%)}
.wave-hero-inner{max-width:1080px;margin:0 auto;position:relative;z-index:1}
.wave-hero .tag{display:inline-block;background:#ad1457;color:#fff;font-size:.78rem;font-weight:600;padding:5px 14px;border-radius:999px;margin-bottom:14px;letter-spacing:.04em}
.wave-hero h1{font-size:1.75rem;line-height:1.35;margin-bottom:14px;color:#111;max-width:720px}
.wave-hero .lede{color:#444;font-size:1.02rem;margin-bottom:10px;max-width:680px}

.arc-nav-wrap{position:sticky;top:58px;z-index:300;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid #f0e0e8;padding:12px 0;margin-bottom:32px}
.arc-nav{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;list-style:none}
.arc-nav a{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border:1px solid #ecd0dc;border-radius:999px;font-size:.82rem;color:#666;text-decoration:none;transition:.2s;background:#fff}
.arc-nav a:hover,.arc-nav a.is-active{border-color:#ad1457;color:#ad1457;background:#fdf2f6;text-decoration:none}
.arc-nav a .idx{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;background:#f8bbd0;color:#880e4f;font-size:.68rem;font-weight:700;border-radius:50%}

.panel-stack{display:flex;flex-direction:column;gap:28px}
.offset-panel{position:relative;padding:26px 28px 28px;background:#fff;border:1px solid #eee;border-radius:16px;box-shadow:0 3px 16px rgba(173,20,87,.06)}
.offset-panel::before{content:"";position:absolute;top:0;left:0;right:0;height:5px;border-radius:16px 16px 0 0;background:linear-gradient(90deg,#ad1457,#f48fb1)}
.offset-panel:nth-child(1){margin-right:64px}
.offset-panel:nth-child(2){margin-left:48px;margin-right:24px}
.offset-panel:nth-child(3){margin-left:72px;margin-right:0}
.offset-panel:nth-child(4){margin-right:56px;margin-left:16px}
.offset-panel:nth-child(5){margin-left:40px;margin-right:32px}
.offset-panel:nth-child(6){margin-right:0;margin-left:56px}
.panel-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.panel-head .badge{display:inline-flex;align-items:center;justify-content:center;min-width:32px;height:32px;background:#fce4ec;color:#ad1457;font-size:.82rem;font-weight:700;border-radius:8px}
.panel-head h2{font-size:1.18rem;color:#222;line-height:1.35}
.offset-panel p{margin-bottom:11px;color:#333}
.offset-panel figure{margin:18px 0;border-radius:12px;overflow:hidden;border:1px solid #eee}
.offset-panel figcaption{font-size:.84rem;color:#777;padding:8px 12px;background:#fafafa}
.note-chip{display:inline-block;background:#fdf2f6;border:1px solid #f8bbd0;color:#880e4f;font-size:.88rem;padding:12px 16px;border-radius:10px;margin:14px 0;line-height:1.65}

.twin-callout{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:36px 0 32px}
.twin-callout .box{padding:20px 22px;border-radius:14px;border:1px solid #eee;background:#fafafa}
.twin-callout .box h3{font-size:1rem;margin-bottom:8px;color:#ad1457}
.twin-callout .box p{font-size:.92rem;color:#444;margin:0}

.faq-zone{margin-top:8px;padding:24px 26px;background:#fdf8fa;border:1px solid #f0e0e8;border-radius:16px}
.faq-zone h2{font-size:1.12rem;margin-bottom:16px;color:#222}
.faq-zone details{border-bottom:1px solid #ecd0dc;padding:12px 0}
.faq-zone details:last-child{border-bottom:none}
.faq-zone summary{cursor:pointer;font-weight:600;color:#333;list-style:none}
.faq-zone summary::-webkit-details-marker{display:none}
.faq-zone details p{margin-top:10px;color:#555;font-size:.94rem}

.site-footer{background:#fdf8fa;border-top:1px solid #f0e0e8;padding:28px 20px;text-align:center;font-size:.88rem;color:#666}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 16px;margin-bottom:10px}
.footer-links a{color:#555}

.prose-page{max-width:780px;margin:0 auto;padding:32px 20px 48px}
.prose-page h1{font-size:1.5rem;margin-bottom:16px}
.prose-page h2{font-size:1.12rem;margin:22px 0 10px}
.prose-page p{margin-bottom:12px;color:#333}
.error-page{text-align:center;padding:60px 20px}
.error-page h1{font-size:3rem;color:#ad1457}

@media(max-width:860px){
  .offset-panel,.offset-panel:nth-child(n){margin-left:0!important;margin-right:0!important}
  .twin-callout{grid-template-columns:1fr}
  .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;box-shadow:0 4px 12px rgba(0,0,0,.06)}
  .site-nav.is-open{display:block}
  .site-nav ul{flex-direction:column;gap:0}
  .site-nav li{border-bottom:1px solid #f0f0f0}
  .site-nav a{display:block;padding:12px 0}
  .header-inner{position:relative;flex-wrap:wrap}
  .wave-hero h1{font-size:1.38rem}
  .arc-nav-wrap{top:52px}
}