*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;color:#222;background:#fdf8f0;line-height:1.7}
a{color:#0f766e}
h1,h2,h3{font-family:Georgia,serif;color:#123f3a;line-height:1.3}
/* Header */
.site-header{background:linear-gradient(135deg,#0f3d3a,#14665e);color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 2px 12px rgba(0,0,0,.18)}
.header-inner{max-width:1150px;margin:0 auto;padding:14px 20px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none}
.logo-mark{display:inline-flex;width:44px;height:44px;border-radius:50%;background:#e8930c;color:#fff;font-weight:800;font-size:18px;align-items:center;justify-content:center;flex-shrink:0}
.logo-text{font-family:Georgia,serif;font-size:24px;font-weight:bold;line-height:1.1}
.tagline{display:block;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;font-size:12px;font-weight:normal;color:#cde8e2;letter-spacing:.2px}
.main-nav{display:flex;flex-wrap:wrap;gap:6px}
.main-nav a{color:#e6f2ef;text-decoration:none;padding:7px 12px;border-radius:20px;font-size:15px}
.main-nav a:hover{background:rgba(255,255,255,.18);color:#fff}
/* Layout + sidebar */
.page-layout{max-width:1150px;margin:0 auto;padding:24px 20px;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;align-items:start}
.home-main{min-width:0}
.article{background:#fff;border:1px solid #e5ddd0;border-radius:12px;padding:30px;min-width:0;box-shadow:0 2px 10px rgba(0,0,0,.04)}
.article h2{margin-top:32px;padding-bottom:6px;border-bottom:2px solid #f0e6d0}
.sidebar{position:sticky;top:86px;display:flex;flex-direction:column;gap:18px}
.side-box{background:#fff;border:1px solid #e5ddd0;border-radius:12px;padding:18px;box-shadow:0 2px 8px rgba(0,0,0,.04)}
.side-box h3{margin:0 0 12px;font-size:18px}
.side-box ul,.side-box ol{margin:0;padding-left:20px}
.side-box li{margin-bottom:8px}
.side-box a{text-decoration:none}
.side-box a:hover{text-decoration:underline}
.side-about{background:#fff8e6;border-color:#f0d9a0}
.side-start{background:#eef7f5;border-color:#bcded6}
/* Homepage */
.hero{background:linear-gradient(135deg,#fff3d6,#ffe3a3);border-left:6px solid #e8930c;padding:26px;border-radius:12px;box-shadow:0 2px 10px rgba(0,0,0,.05)}
.hero h1{font-size:34px;margin:0 0 8px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px;margin:16px 0 32px}
.card{background:#fff;border:1px solid #e5ddd0;border-top:5px solid #0f766e;border-radius:10px;padding:18px;transition:transform .15s ease,box-shadow .15s ease}
.card:nth-child(3n+2){border-top-color:#e8930c}
.card:nth-child(3n){border-top-color:#7c5cbf}
.card:hover{transform:translateY(-4px);box-shadow:0 10px 22px rgba(0,0,0,.10)}
.card h3{margin-top:0}
.card a{text-decoration:none;color:#123f3a}
.note{background:#fff;border:1px solid #e5ddd0;border-radius:12px;padding:20px}
/* Footer */
.site-footer{background:#123f3a;color:#d7f0ec;margin-top:40px}
.footer-inner{max-width:1150px;margin:0 auto;padding:32px 20px 20px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:24px}
.foot-col h4{color:#fff;margin:0 0 12px;font-size:17px}
.foot-col p{color:#cde8e2;font-size:14px}
.foot-col nav{display:flex;flex-direction:column;gap:8px}
.foot-col nav a{color:#d7f0ec;text-decoration:none;font-size:15px}
.foot-col nav a:hover{color:#fff;text-decoration:underline}
.footer-bottom{border-top:1px solid rgba(255,255,255,.18);padding:14px 20px;text-align:center;font-size:13px;color:#bcded6}
.footer-bottom p{margin:0}
@media(max-width:900px){
  .site-header{position:static}
  .page-layout{grid-template-columns:1fr}
  .sidebar{position:static}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media(max-width:700px){
  .header-inner{flex-direction:column;align-items:flex-start}
  .logo-text{font-size:21px}
  .article{padding:18px}
  .hero h1{font-size:28px}
  .footer-inner{grid-template-columns:1fr}
}

.hero-img{margin:8px 0 20px}
.hero-img img{width:100%;height:auto;display:block;border-radius:12px;border:1px solid #e5ddd0;background:#fff}