*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Noto Sans SC",system-ui,sans-serif;background:#fff;color:#1a1a1a;line-height:1.78;font-size:16px}
a{color:#0d9488;text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}

.site-header{background:#fff;border-bottom:1px solid #e5e7eb;position:sticky;top:0;z-index:200}
.header-inner{max-width:1140px;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:.98rem}
.brand:hover{text-decoration:none}
.brand img{border-radius:8px}
.brand em{font-style:normal;color:#0d9488;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:#0d9488;font-weight:600;border-bottom:2px solid #0d9488}
.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:#f9fafb;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}
#ads .caption{font-size:.7rem;color:#666;margin-top:4px;text-align:center;max-width:70px;line-height:1.3}

.page-shell{max-width:1140px;margin:0 auto;padding:0 20px}

.hero-band{background:linear-gradient(160deg,#ecfdf5 0%,#fff 55%);border-bottom:1px solid #d1fae5;padding:36px 0 32px}
.hero-band .tag{display:inline-block;background:#0d9488;color:#fff;font-size:.78rem;font-weight:600;padding:5px 14px;border-radius:999px;margin-bottom:14px;letter-spacing:.04em}
.hero-band h1{font-size:1.82rem;line-height:1.32;color:#111;margin-bottom:14px;max-width:820px}
.hero-band .lede{color:#374151;font-size:1.02rem;margin-bottom:10px;max-width:820px}

.hex-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;padding:28px 0 32px}
.hex-cell{background:#fff;border:1px solid #e5e7eb;border-radius:14px;padding:18px 16px;text-align:center;position:relative;transition:box-shadow .2s,border-color .2s}
.hex-cell:hover{border-color:#99f6e4;box-shadow:0 4px 18px rgba(13,148,136,.08)}
.hex-cell .hex-num{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;background:#ecfdf5;color:#0d9488;font-weight:700;font-size:.9rem;border-radius:50%;margin-bottom:10px}
.hex-cell h3{font-size:.92rem;color:#111;margin-bottom:6px}
.hex-cell p{font-size:.82rem;color:#6b7280;line-height:1.55}

.content-frame{display:grid;grid-template-columns:1fr 52px;gap:24px;align-items:start;padding-bottom:48px}
.spine-nav{position:sticky;top:96px;display:flex;flex-direction:column;align-items:center;gap:0;padding-top:8px}
.spine-nav::before{content:"";position:absolute;top:12px;bottom:12px;width:2px;background:#e5e7eb;left:50%;transform:translateX(-50%);z-index:0}
.spine-nav a{position:relative;z-index:1;display:flex;align-items:center;justify-content:center;width:14px;height:14px;border-radius:50%;background:#fff;border:2px solid #d1d5db;margin:18px 0;transition:.2s}
.spine-nav a.is-active{border-color:#0d9488;background:#0d9488;box-shadow:0 0 0 4px rgba(13,148,136,.15)}
.spine-nav a:hover{border-color:#0d9488}
.spine-nav a span{position:absolute;right:24px;white-space:nowrap;font-size:.75rem;color:#9ca3af;opacity:0;pointer-events:none;transition:opacity .2s}
.spine-nav a.is-active span,.spine-nav a:hover span{opacity:1;color:#0d9488}

.bands{min-width:0}
.band-section{padding:32px 28px;margin-bottom:4px;border-radius:0}
.band-section:nth-child(odd){background:#fff}
.band-section:nth-child(even){background:#f0fdfa;border-top:1px solid #ccfbf1;border-bottom:1px solid #ccfbf1}
.band-section h2{font-size:1.24rem;color:#111;margin-bottom:14px;padding-left:14px;border-left:4px solid #0d9488}
.band-section p{margin-bottom:11px;color:#374151}
.band-section figure{margin:20px 0;border-radius:10px;overflow:hidden;border:1px solid #e5e7eb;max-width:640px}
.band-section figcaption{font-size:.84rem;color:#6b7280;padding:8px 12px;background:#f9fafb}

.hint-strip{background:#ecfdf5;border-left:4px solid #0d9488;padding:14px 18px;margin:16px 0;border-radius:0 8px 8px 0;font-size:.94rem;color:#374151}

.gallery-duo{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:20px 0}
.gallery-duo figure{border-radius:10px;overflow:hidden;border:1px solid #e5e7eb}
.gallery-duo figcaption{font-size:.8rem;color:#6b7280;padding:8px 10px;background:#f9fafb}

.faq-dl{margin-top:20px}
.faq-dl dt{font-weight:700;color:#111;margin:18px 0 6px;font-size:.98rem}
.faq-dl dt:first-child{margin-top:0}
.faq-dl dd{color:#374151;margin:0 0 8px 0;padding-left:16px;border-left:2px solid #99f6e4}

.closing-band{background:linear-gradient(135deg,#ecfdf5,#fff);border:1px solid #a7f3d0;border-radius:14px;padding:26px 28px;margin-top:8px}
.closing-band h2{font-size:1.12rem;margin-bottom:10px;color:#111;border:none;padding:0}
.closing-band p{font-size:.95rem;color:#374151}

.read-more{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.read-more a{display:inline-block;padding:8px 14px;background:#f9fafb;border:1px solid #e5e7eb;border-radius:999px;font-size:.88rem;color:#555}
.read-more a:hover{background:#ecfdf5;border-color:#99f6e4;color:#0d9488;text-decoration:none}

.site-footer{background:#f9fafb;border-top:1px solid #e5e7eb;padding:28px 20px;text-align:center;font-size:.88rem;color:#6b7280}
.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:#374151}
.error-page{text-align:center;padding:60px 20px}
.error-page h1{font-size:3rem;color:#0d9488}

@media(max-width:900px){
  .hex-grid{grid-template-columns:repeat(2,1fr)}
  .content-frame{grid-template-columns:1fr}
  .spine-nav{display:none}
  .gallery-duo{grid-template-columns:1fr}
}
@media(max-width:640px){
  .hex-grid{grid-template-columns:1fr}
  .hero-band h1{font-size:1.42rem}
  .band-section{padding:24px 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;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 #f3f4f6}
  .site-nav a{display:block;padding:12px 0}
  .header-inner{position:relative;flex-wrap:wrap}
}