*,*::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:1.75;font-size:16px}
a{color:#00695c;text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
.container{max-width:1140px;margin:0 auto;padding:0 20px}

.site-header{background:#fff;border-bottom:1px solid #e8e8e8;position:sticky;top:0;z-index:200}
.header-row{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px;font-size:1.05rem;color:#1a1a1a;font-weight:500}
.brand:hover{text-decoration:none}
.brand b{color:#00695c;font-weight:700}
.site-nav ul{display:flex;gap:6px 18px;list-style:none;flex-wrap:wrap}
.site-nav a{color:#444;font-size:.92rem;padding:4px 0}
.site-nav a.active{color:#00695c;font-weight:600;border-bottom:2px solid #00695c}
.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;letter-spacing:.05em}
#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}

.hero-tabs{padding:38px 0 24px;border-bottom:3px solid #00695c}
.hero-tabs .hero-kicker{font-size:.82rem;color:#00695c;font-weight:600;letter-spacing:.12em;text-transform:uppercase;margin-bottom:10px}
.hero-tabs h1{font-size:1.68rem;line-height:1.38;margin-bottom:14px;color:#111;max-width:860px}
.hero-tabs .lead{color:#444;margin-bottom:11px;font-size:1.02rem;max-width:860px}
.hero-tabs .lead:last-of-type{margin-bottom:0}

.tab-strip-wrap{background:#fff;border-bottom:1px solid #d0d0d0;position:sticky;top:61px;z-index:150;box-shadow:0 2px 8px rgba(0,0,0,.04)}
.tab-strip{display:flex;overflow-x:auto;gap:0;scrollbar-width:thin;padding:0}
.tab-strip::-webkit-scrollbar{height:4px}
.tab-strip::-webkit-scrollbar-thumb{background:#b2dfdb;border-radius:2px}
.tab-btn{flex:0 0 auto;padding:14px 20px;border:none;background:transparent;font-family:inherit;font-size:.88rem;color:#555;cursor:pointer;border-bottom:3px solid transparent;white-space:nowrap;transition:.15s}
.tab-btn:hover{color:#00695c;background:#f5faf9}
.tab-btn.is-active{color:#00695c;font-weight:600;border-bottom-color:#00695c;background:#e0f2f1}

.tab-panels{padding:28px 0 16px}
.tab-panel{display:none;animation:fadeIn .25s ease}
.tab-panel.is-active{display:block}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

.magazine{display:grid;grid-template-columns:1fr 300px;gap:32px 28px;align-items:start}
.mag-col-main{min-width:0}
.mag-col-aside{background:#f7fafa;border:1px solid #b2dfdb;border-radius:8px;padding:20px 18px;position:sticky;top:130px}
.mag-col-aside h3{font-size:.92rem;color:#00695c;margin-bottom:10px;font-weight:600}
.mag-col-aside ul{list-style:none;font-size:.88rem;color:#444}
.mag-col-aside li{padding:6px 0;border-bottom:1px dashed #c8e6c9}
.mag-col-aside li:last-child{border-bottom:none}
.mag-col-aside .aside-tip{margin-top:14px;padding:10px 12px;background:#fff;border-left:3px solid #00695c;font-size:.85rem;color:#333}

.panel-head{margin-bottom:18px;padding-bottom:12px;border-bottom:1px solid #eee}
.panel-head .panel-tag{display:inline-block;font-size:.72rem;font-weight:700;color:#fff;background:#00695c;padding:3px 10px;border-radius:3px;margin-bottom:8px;letter-spacing:.06em}
.panel-head h2{font-size:1.22rem;color:#111;line-height:1.4}

.mag-col-main p{margin-bottom:11px;color:#333;font-size:.97rem}
.mag-col-main p:last-child{margin-bottom:0}
.mag-figure{margin:18px 0;border-radius:8px;overflow:hidden;border:1px solid #b2dfdb}
.mag-figure figcaption{font-size:.8rem;color:#666;padding:8px 12px;background:#fafafa}
.callout-box{background:#e0f2f1;border-radius:6px;padding:14px 16px;margin:14px 0;font-size:.92rem;color:#004d40}

.faq-zone{padding:32px 0 48px;border-top:2px solid #00695c;margin-top:12px}
.faq-zone h2{font-size:1.25rem;margin-bottom:18px;color:#111}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.faq-grid details{border:1px solid #e0e0e0;border-radius:6px;background:#fff}
.faq-grid summary{padding:13px 16px;cursor:pointer;font-weight:500;color:#333;list-style:none;font-size:.94rem}
.faq-grid summary::-webkit-details-marker{display:none}
.faq-grid summary::before{content:"▸";display:inline-block;width:18px;color:#00695c}
.faq-grid details[open] summary::before{content:"▾"}
.faq-grid details p{padding:0 16px 13px;color:#444;font-size:.92rem}

.site-footer{background:#fafafa;border-top:1px solid #eee;padding:28px 0;margin-top:20px}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 20px;margin-bottom:10px}
.footer-links a{font-size:.88rem;color:#555}
.site-footer p{font-size:.82rem;color:#888}

.prose-page{padding:36px 0 48px;max-width:760px}
.prose-page h1{font-size:1.5rem;margin-bottom:16px;color:#111}
.prose-page h2{font-size:1.1rem;margin:20px 0 10px;color:#222}
.prose-page p{margin-bottom:12px;color:#333}

.error-page{text-align:center;padding:48px 0 16px}
.error-page h1{font-size:3rem;color:#00695c;line-height:1}

@media(max-width:900px){
  .magazine{grid-template-columns:1fr}
  .mag-col-aside{position:static}
  .faq-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  .nav-toggle{display:flex}
  .site-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid #eee;padding:12px 20px;box-shadow:0 4px 12px rgba(0,0,0,.06)}
  .site-nav.is-open{display:block}
  .site-nav ul{flex-direction:column;gap:10px}
  .header-row{position:relative}
  .tab-strip-wrap{top:57px}
  .hero-tabs h1{font-size:1.36rem}
  .tab-btn{padding:12px 16px;font-size:.84rem}
}