*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;color:#1f2937;background:#f4f7f6;line-height:1.7}
a{color:inherit}
img{max-width:100%;height:auto}
.topbar{background:#fff;border-bottom:1px solid #e5e7eb;position:sticky;top:0;z-index:20}
.topbar-inner{max-width:1180px;margin:auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{font-size:23px;font-weight:800;text-decoration:none;color:#166534}
.home-link{font-size:14px;font-weight:700;text-decoration:none;color:#374151}
.home-link:hover{color:#15803d}
.breadcrumb-wrap{background:#fff;border-bottom:1px solid #e5e7eb}
.breadcrumb{max-width:1180px;margin:auto;padding:11px 20px;font-size:14px;color:#6b7280}
.breadcrumb a{text-decoration:none;color:#166534}
.breadcrumb span{margin:0 7px}
.hero{background:radial-gradient(circle at top left,rgba(255,255,255,.18),transparent 32%),linear-gradient(135deg,#166534,#15803d);color:#fff;padding:60px 20px 68px}
.hero-inner{max-width:920px;margin:auto;text-align:center}
.hero-badge{display:inline-block;margin-bottom:17px;padding:7px 15px;border:1px solid rgba(255,255,255,.45);background:rgba(255,255,255,.12);border-radius:999px;font-size:14px;font-weight:700}
.hero h1{margin:0 0 18px;font-size:clamp(32px,6vw,52px);line-height:1.15}
.hero p{max-width:790px;margin:0 auto;font-size:18px;color:rgba(255,255,255,.94)}
.main{max-width:1180px;margin:auto;padding:46px 20px 72px}
.intro{max-width:850px;margin:0 auto 38px;text-align:center}
.intro h2{margin:0 0 12px;font-size:30px;color:#111827}
.intro p{margin:0;color:#4b5563;font-size:17px}
.group-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.group-card{display:flex;flex-direction:column;background:#fff;border:1px solid #e5e7eb;border-radius:18px;padding:26px;box-shadow:0 8px 25px rgba(15,23,42,.06);transition:.2s}
.group-card:hover{transform:translateY(-4px);box-shadow:0 15px 35px rgba(15,23,42,.11)}
.group-heading{display:flex;align-items:flex-start;gap:15px;margin-bottom:14px}
.group-icon{width:54px;height:54px;flex:0 0 54px;display:flex;align-items:center;justify-content:center;background:#dcfce7;border-radius:15px;font-size:28px}
.group-heading h2{margin:0;color:#111827;font-size:23px;line-height:1.25}
.group-label{display:inline-block;margin-top:5px;font-size:13px;color:#15803d;font-weight:700}
.group-description{margin:0 0 17px;color:#4b5563}
.group-card h3{margin:0 0 9px;font-size:16px}
.clean-list{margin:0 0 24px;padding:0;list-style:none}
.clean-list li{position:relative;padding-left:26px;margin-bottom:8px;color:#374151}
.clean-list li:before{content:"✓";position:absolute;left:0;color:#16a34a;font-weight:800}
.button{display:block;margin-top:auto;padding:14px 18px;border-radius:11px;background:#16a34a;color:#fff;text-align:center;text-decoration:none;font-weight:800;transition:.2s}
.button:hover{background:#15803d;transform:translateY(-1px)}
.button.secondary{background:#0f766e}
.button.secondary:hover{background:#115e59}
.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:30px;align-items:start}
.content-card,.side-card,.faq-item{background:#fff;border:1px solid #e5e7eb;border-radius:16px;box-shadow:0 8px 25px rgba(15,23,42,.05)}
.content-card{padding:30px;margin-bottom:24px}
.content-card h2{margin:0 0 14px;color:#111827;font-size:28px}
.content-card h3{margin:26px 0 10px;color:#111827;font-size:21px}
.content-card p{margin:0 0 15px;color:#4b5563}
.side-card{padding:24px;position:sticky;top:85px}
.side-card h2{margin:0 0 12px;font-size:21px}
.side-card p{color:#4b5563}
.side-card .button{margin-top:18px}
.notice{padding:16px 18px;border-left:4px solid #16a34a;background:#f0fdf4;border-radius:8px;color:#374151}
.related{margin-top:28px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.related-card{background:#fff;border:1px solid #e5e7eb;border-radius:14px;padding:20px;text-decoration:none}
.related-card:hover{border-color:#86efac}
.related-card strong{display:block;margin-bottom:6px;color:#166534}
.faq{margin-top:40px}
.faq h2{text-align:center;font-size:30px}
.faq-item{margin-bottom:13px;overflow:hidden}
.faq-item summary{padding:18px 20px;cursor:pointer;font-weight:800;color:#111827}
.faq-answer{padding:0 20px 18px;color:#4b5563}
.footer{padding:30px 20px;background:#111827;color:#d1d5db;text-align:center}
.footer p{margin:4px 0}
.footer a{color:#86efac;text-decoration:none}
@media(max-width:900px){
  .content-grid{grid-template-columns:1fr}
  .side-card{position:static}
  .related-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:800px){
  .hero{padding-top:48px;padding-bottom:54px}
  .hero p{font-size:16px}
  .main{padding-top:36px}
  .group-grid{grid-template-columns:1fr}
  .group-card{padding:22px}
}
@media(max-width:560px){
  .brand{font-size:20px}
  .home-link{font-size:13px}
  .hero h1{font-size:34px}
  .intro h2,.faq h2{font-size:25px}
  .related-grid{grid-template-columns:1fr}
  .content-card{padding:22px}
}