*,*::before,*::after{box-sizing:border-box}
html{font-size:100%;-webkit-text-size-adjust:100%;height:100%}
.obe-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.obe-skip{position:absolute;left:-999px;top:0;background:#1c2a22;color:#fff;padding:8px 16px;z-index:10}
.obe-skip:focus{left:8px;top:8px}
.obe-body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:#f3f6f2;color:#1c2a22;font-family:ui-sans-serif,system-ui,"Segoe UI",Helvetica,Arial,sans-serif;line-height:1.5;font-size:16px;font-weight:400}
.obe-body a{color:#2f5d45}
.obe-body a:hover{color:#1c2a22}
.obe-body a:focus-visible,.obe-body :focus-visible{outline:3px solid #2f5d45;outline-offset:2px}
.obe-head{background:#fff;border-bottom:1px solid #d7e2d8}
.obe-wrap{width:100%;max-width:1080px;margin:0 auto;padding:0 16px}
.obe-mast{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;min-height:56px;padding-top:8px;padding-bottom:8px}
.obe-mark{font-size:22px;line-height:1.15;text-decoration:none;color:#1c2a22;font-weight:700;letter-spacing:-.02em}
.obe-mark:hover,.obe-mark:focus-visible{color:#2f5d45}
.obe-nav{margin-left:auto}
.obe-nav ul{display:flex;flex-wrap:wrap;gap:4px 16px;list-style:none;margin:0;padding:0}
.obe-nav a{display:inline-flex;align-items:center;min-height:44px;text-decoration:none;color:#1c2a22;font-weight:600}
.obe-nav a:hover{color:#2f5d45;text-decoration:underline}
.obe-sok{display:flex;gap:8px;margin:0;min-width:0}
.obe-sok input{flex:1;min-width:0;padding:0 14px;border:1px solid #c3d2c6;border-radius:8px;background:#fff;color:#1c2a22;font:inherit}
.obe-sok button{flex:0 0 auto;padding:0 16px;border:0;border-radius:8px;background:#2f5d45;color:#fff;font:inherit;font-weight:700;cursor:pointer}
.obe-sok button:hover,.obe-sok button:focus-visible{background:#244a37}
.obe-sok-mast{flex:1 1 100%;width:100%}
.obe-sok-mast input,.obe-sok-mast button{height:44px;min-height:44px}
.obe-sok-hero{width:100%;max-width:640px;margin:14px 0 0}
.obe-sok-hero input,.obe-sok-hero button{height:52px;min-height:52px}
.obe-page{flex:1 0 auto;width:100%;padding:16px 0 32px}
.obe-sheet{min-width:0}
.obe-hero{background:#fff;border:1px solid #d7e2d8;border-radius:12px;padding:16px;margin:0 0 20px}
.obe-h1,.obe-hero .obe-h1,.obe-sheet>h1.obe-h1{font-size:1.75rem;line-height:1.15;margin:0 0 8px;font-weight:800;letter-spacing:-.03em;overflow-wrap:break-word}
.obe-lede{margin:0;max-width:60ch;color:#4a5c50;font-size:16px;line-height:1.5;overflow-wrap:break-word}
.obe-hero .obe-lede{margin:0}
.obe-sheet>.obe-lede{margin:0 0 16px}
.obe-h2{font-size:1.375rem;line-height:1.25;margin:0 0 10px;font-weight:700;color:#1c2a22;letter-spacing:-.02em}
.obe-h3{font-size:1.05rem;margin:12px 0 6px;font-weight:700}
.obe-work{display:flex;flex-direction:column;gap:20px}
.obe-examples{min-width:0}
.obe-side{min-width:0;background:#fff;border:1px solid #d7e2d8;border-radius:12px;padding:14px}
.obe-lex{margin:0;padding:0;display:grid;gap:10px}
.obe-unit{margin:0;padding:12px 14px;background:#fff;border:1px solid #d7e2d8;border-left:4px solid #2f5d45;border-radius:8px}
.obe-unit dt{margin:0 0 4px;font-size:1.02rem;font-weight:700}
.obe-unit dt a{text-decoration:none;color:#1c2a22}
.obe-unit dt a:hover,.obe-unit dt a:focus-visible{color:#2f5d45;text-decoration:underline}
.obe-unit dd{margin:0;color:#3d4d42;overflow-wrap:break-word}
.obe-sense{margin:0 0 16px;padding:16px;background:#fff;border:1px solid #d7e2d8;border-radius:10px}
.obe-defs{margin:0;padding:0 0 0 1.25rem;max-width:65ch}
.obe-defs li{margin:0 0 12px}
.obe-defs li:last-child{margin-bottom:0}
.obe-defs p{margin:0;font-size:16px;font-weight:400;line-height:1.55}
.obe-ex{font-style:italic;color:#4a5c50;margin:6px 0 0;font-weight:400}
.obe-pos{margin:8px 0 0;font-size:.88rem;color:#4a5c50}
.obe-ety{margin:16px 0;padding:12px 14px;background:#eef3ee;border-left:3px solid #2f5d45}
.obe-chips{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}
.obe-chips li{background:#eef3ee;padding:10px 12px;border:1px solid #d7e2d8;min-height:44px;border-radius:8px}
.obe-list{margin:8px 0 0 20px;max-width:65ch}
.obe-browse{margin:0}
.obe-alpha{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:6px;list-style:none;margin:0;padding:0}
.obe-alpha a{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:0;text-decoration:none;color:#1c2a22;background:#eef3ee;border:1px solid #d7e2d8;border-radius:6px;font-weight:700}
.obe-alpha a:hover,.obe-alpha a:focus-visible{background:#2f5d45;color:#fff;border-color:#2f5d45}
.obe-cards,.obe-related{display:grid;grid-template-columns:1fr;list-style:none;margin:0 0 12px;padding:0;background:#fff;border:1px solid #d7e2d8;border-radius:10px;overflow:hidden}
.obe-cards li,.obe-related li{margin:0;border-bottom:1px solid #e7eee8}
.obe-cards li:last-child,.obe-related li:last-child{border-bottom:0}
.obe-cards a,.obe-related a{display:block;padding:10px 14px;min-height:56px;text-decoration:none;color:#1c2a22}
.obe-cards a:hover,.obe-related a:hover{background:#f7faf6}
.obe-card-hw{font-weight:700}
.obe-card-meta{display:block;font-size:.88rem;color:#4a5c50;margin-top:2px;overflow-wrap:break-word}
.obe-bc{margin:0 0 12px}
.obe-bc ol{list-style:none;display:flex;flex-wrap:wrap;gap:4px 12px;margin:0;padding:0;font-size:.82rem}
.obe-bc a{color:#4a5c50;text-decoration:none}
.obe-bc a:hover{color:#2f5d45;text-decoration:underline}
.obe-bc li+li::before{content:"/";margin-right:8px;color:#8a968c}
.obe-pager{margin:20px 0 0;display:flex;gap:16px;flex-wrap:wrap}
.obe-pager a,.obe-pager span{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px}
.obe-foot{flex-shrink:0;background:#eef3ee;border-top:1px solid #d7e2d8;padding:20px 0 28px;font-size:.875rem;color:#4a5c50}
.obe-foot p{margin:0 0 8px;max-width:70ch}
.obe-src{opacity:.92}
.obe-legal ul{display:flex;flex-wrap:wrap;gap:8px 16px;list-style:none;margin:12px 0 8px;padding:0}
.obe-legal a{display:inline-flex;align-items:center;min-height:44px;color:#2f5d45}
.obe-scroll{overflow-x:auto;margin:0 0 12px}
.obe-table{width:100%;border-collapse:collapse}
.obe-table caption{text-align:left;font-weight:700;margin-bottom:6px}
.obe-table th,.obe-table td{border-bottom:1px solid #d7e2d8;padding:8px;text-align:left}
.obe-ok{color:#2f5d45;font-weight:700}
.obe-no{color:#5c5c5c;text-decoration:line-through}
.obe-cols{columns:2;gap:20px;list-style:none;margin:0;padding:0}
.obe-cols li{break-inside:avoid;line-height:1.4;padding:6px 0}
.obe-tiles{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}
.obe-tiles li{font-family:ui-monospace,Menlo,Consolas,monospace;text-transform:uppercase;letter-spacing:.04em;background:#eef3ee;padding:8px 12px;min-height:44px}
@media (min-width:720px){
  .obe-wrap{padding:0 24px}
  .obe-mast{min-height:64px;flex-wrap:nowrap;padding-top:0;padding-bottom:0}
  .obe-sok-mast{flex:0 1 22rem;width:auto;max-width:22rem}
  .obe-hero{padding:24px 28px 28px;margin:0 0 24px}
  .obe-hero .obe-h1{font-size:2.375rem}
  .obe-sheet>h1.obe-h1{font-size:2rem}
  .obe-work{flex-direction:row;align-items:flex-start;gap:24px}
  .obe-examples{flex:1;min-width:0}
  .obe-side{width:240px;flex-shrink:0;position:sticky;top:12px}
  .obe-page{padding:20px 0 40px}
  .obe-cols{columns:3}
}
@media (max-width:480px){
  .obe-cols{columns:1}
}
@media (prefers-reduced-motion:reduce){
  .obe-sok button,.obe-alpha a,.obe-cards a,.obe-related a{transition:none}
}