*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Noto Sans SC",system-ui,sans-serif;background:#fff;color:#1e1b4b;line-height:1.75;font-size:16px}
a{color:#7c3aed;text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.container{max-width:1180px;margin:0 auto;padding:0 20px}

.site-header{background:#fff;border-bottom:2px solid #ddd6fe;position:sticky;top:0;z-index:200}
.header-row{display:flex;align-items:center;justify-content:space-between;padding:12px 0;position:relative}
.brand{display:flex;align-items:center;gap:10px;font-size:1rem;color:#1e1b4b;font-weight:500}
.brand:hover{text-decoration:none}
.brand b{color:#7c3aed;font-weight:700}
.brand img{border-radius:6px}
.site-nav ul{display:flex;gap:6px 16px;list-style:none;flex-wrap:wrap}
.site-nav a{color:#57534e;font-size:.9rem;padding:4px 0}
.site-nav a.active{color:#7c3aed;font-weight:600;border-bottom:2px solid #7c3aed}
.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:#444;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:#faf5ff;border-bottom:1px solid #e9d5ff;padding:10px 0}
.applist-title{font-size:.78rem;color:#6d28d9;text-align:center;margin-bottom:6px}
#ads{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}
#ads .caption{font-size:.7rem;color:#78716c;margin-top:4px;text-align:center;max-width:70px;line-height:1.3}

.hero-full{width:100%;background:linear-gradient(135deg,#ede9fe 0%,#faf5ff 45%,#fff 100%);padding:52px 0 44px;border-bottom:1px solid #ddd6fe}
.hero-full .tag{display:inline-block;font-size:.76rem;font-weight:700;color:#7c3aed;background:#ede9fe;padding:5px 14px;border-radius:20px;margin-bottom:14px;letter-spacing:.03em}
.hero-full h1{font-size:1.82rem;line-height:1.34;color:#1e1b4b;margin-bottom:18px;max-width:820px}
.hero-full .lead{color:#44403c;font-size:1.04rem;max-width:760px;margin-bottom:14px}
.hero-full .lead-note{font-size:.92rem;color:#78716c;max-width:680px}

.section-nav{padding:18px 0;border-bottom:1px solid #e7e5e4;background:#fafaf9}
.section-nav ul{display:flex;flex-wrap:wrap;gap:8px;list-style:none;justify-content:center}
.section-nav a{display:inline-block;padding:7px 14px;border:1px solid #c4b5fd;border-radius:999px;font-size:.84rem;color:#7c3aed;background:#fff;transition:.15s}
.section-nav a:hover{background:#f5f3ff;text-decoration:none}

.grid-section{padding:40px 0 12px}
.grid-section .section-intro{text-align:center;max-width:680px;margin:0 auto 28px;color:#57534e;font-size:.96rem}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:36px}
.feature-card{background:#fff;border:1px solid #e9d5ff;border-radius:14px;padding:22px 20px 24px;box-shadow:0 2px 12px rgba(124,58,237,.05);transition:box-shadow .2s}
.feature-card:hover{box-shadow:0 6px 20px rgba(124,58,237,.1)}
.feature-card h2{font-size:1.06rem;color:#1e1b4b;margin-bottom:10px;padding-bottom:8px;border-bottom:2px solid #ede9fe;line-height:1.4}
.feature-card p{color:#44403c;font-size:.94rem;margin-bottom:10px}
.feature-card p:last-child{margin-bottom:0}
.feature-card figure{margin-top:14px;border-radius:10px;overflow:hidden;border:1px solid #e9d5ff}
.feature-card figcaption{font-size:.8rem;color:#78716c;margin-top:6px;line-height:1.45}
.feature-card.is-accent{background:linear-gradient(180deg,#faf5ff 0%,#fff 100%);border-color:#c4b5fd}

.grid-span-full{grid-column:1/-1;max-width:820px;margin:0 auto;padding:8px 0 20px}
.grid-span-full p{color:#44403c;font-size:.96rem;margin-bottom:10px}

.faq-section{background:#faf5ff;border-top:1px solid #ddd6fe;padding:44px 0 52px}
.faq-section h2{font-size:1.28rem;color:#1e1b4b;margin-bottom:22px;text-align:center}
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;max-width:960px;margin:0 auto}
.faq-item{background:#fff;border:1px solid #e9d5ff;border-radius:10px;padding:18px 22px}
.faq-item h3{font-size:.98rem;color:#7c3aed;margin-bottom:8px;font-weight:600}
.faq-item p{color:#57534e;font-size:.93rem;margin:0}

.footer-note{padding:28px 0;border-top:1px solid #e7e5e4;text-align:center;font-size:.88rem;color:#78716c}
.footer-note p{max-width:640px;margin:0 auto}

.prose-page{padding:36px 0 48px;max-width:720px}
.prose-page h1{font-size:1.5rem;margin-bottom:16px}
.prose-page h2{font-size:1.1rem;margin:20px 0 8px}
.prose-page p{margin-bottom:12px;color:#444}

.site-footer{background:#fafaf9;border-top:1px solid #e7e5e4;padding:26px 0;text-align:center;font-size:.88rem;color:#78716c}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 16px;margin-bottom:10px}
.footer-links a{color:#57534e}

.error-page{text-align:center;padding:80px 20px}
.error-page h1{font-size:3rem;color:#7c3aed;margin-bottom:12px}

@media(max-width:960px){
  .feature-grid{grid-template-columns:1fr 1fr}
  .faq-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  .feature-grid{grid-template-columns:1fr}
  .nav-toggle{display:flex}
  .site-nav{position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid #e7e5e4;padding:12px 20px;display:none}
  .site-nav.is-open{display:block}
  .site-nav ul{flex-direction:column;gap:10px}
  .hero-full h1{font-size:1.42rem}
}