*{box-sizing:border-box}body,html{margin:0;padding:0;font-size:16px;line-height:1.8;color:#222;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}html{background-color:#f3f4f6}body,html{width:100%}body{max-width:960px;margin:0 auto;padding:2rem 1rem}header{width:100%;background-color:#ecfdf5;padding:.75rem 1.5rem;display:flex;justify-content:space-between;flex-wrap:wrap}header,header .navbar-brand{align-items:center;gap:.75rem}header .navbar-brand{display:inline-flex;font-size:1.3rem;font-weight:600;color:#022c22!important}header #HeaderIcon{height:2.5rem}header .navbar-nav{display:flex;align-items:center;gap:1.5rem}header .nav-link{position:relative;padding:.75rem 0;font-weight:500;color:#166534!important;text-decoration:none;transition:color .15s ease}header .nav-link:after{content:"";position:absolute;left:0;bottom:.3rem;width:0;height:2px;background-color:var(--accent);transition:width .18s ease}header .nav-link:hover{color:#14532d!important}header .nav-link:hover:after{width:100%}header .nav-link.active{color:#022c22!important}header .nav-link.active:after{width:100%}main{padding:2rem 2rem 3rem}#layout_wrapper{background-color:#fff;border-radius:16px;box-shadow:0 18px 45px rgba(15,23,42,.08);overflow:hidden}main>article{max-width:720px;margin:0 auto}footer{margin-top:24px;text-align:center;padding:20px 0;font-size:10px}footer p{margin:0}:root{--accent:#22c55e;--accent-dark:#15803d;--accent-soft:rgba(34,197,94,.16);--border-soft:rgba(15,23,42,.08)}a{color:var(--accent);text-decoration:none;transition:color .15s ease,opacity .15s ease}a:hover,a:visited{color:var(--accent-dark)}h1{font-size:2.15rem;font-weight:700;margin:0 0 2rem;padding:.25rem 0 .8rem .85rem;border-left:4px solid var(--accent);border-bottom:1px solid var(--border-soft);background:linear-gradient(90deg,var(--accent-soft),transparent)}h2{font-size:1.35rem;font-weight:600;margin:2rem 0 1rem;padding-left:.75rem;border-left:3px solid var(--accent-soft);border-bottom:none}p{margin:0 0 1rem}main img{max-width:100%;height:auto}.social-links{display:flex;flex-wrap:wrap;gap:.75rem;margin:1.25rem 0 2rem}.social-links a{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:9999px;background-color:#f3f4f6;transition:transform .12s ease,box-shadow .12s ease,background-color .12s ease}.social-links a img{width:22px;height:22px}.social-links a:hover{background-color:#dcfce7;transform:translateY(-1px);box-shadow:0 4px 12px rgba(15,23,42,.12)}.atcoder-badge{margin:.25rem 0 2rem}.atcoder-badge a{display:inline-block;transition:transform .12s ease,box-shadow .12s ease}.atcoder-badge a img{display:block}.atcoder-badge a:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(15,23,42,.12)}table.md-table{border-collapse:collapse}table.md-table td,table.md-table th{padding:.2rem 1rem}table.md-table tbody tr:not(:last-child),table.md-table thead tr{border-bottom:1px solid rgba(50,50,50,.3)}table.md-table tbody tr:nth-child(odd){background-color:hsla(0,0%,78%,.2)}