:root{color-scheme:light;--ink:#172c23;--green:#21593e;--paper:#fff;--muted:#4e6558;--line:#dbe7db;--bg:#f4f7f2}
*{box-sizing:border-box}[hidden]{display:none!important}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 "DM Sans",Inter,system-ui,sans-serif}
h1,h2,h3,p{margin:0;overflow-wrap:anywhere}h1{font-size:clamp(33px,8vw,54px);letter-spacing:-.06em;line-height:1.06;margin:5px 0 8px}h2{font-size:22px;letter-spacing:-.035em;margin-bottom:8px}h3{font-size:16px}.wrap{width:min(750px,100% - 32px);margin-inline:auto}
.mast{background:#142923;color:#f4faf0;padding:13px 0}.brand{display:flex;align-items:center;gap:10px}.brand img{border-radius:10px}.brand strong,.brand span{display:block}.brand span,.kicker{font-size:10px;font-weight:750;letter-spacing:.14em}.brand span{color:#a9c4b0}
main{padding-top:20px;padding-bottom:max(30px,env(safe-area-inset-bottom));display:grid;gap:14px}.hero{background:radial-gradient(ellipse at 95% 10%,#dcecc4,transparent 72%),#eaf3e7;border:1px solid #dce8d8;border-radius:19px;padding:23px}.hero p,.muted{color:var(--muted)}.kicker{color:#436650}.badge{display:inline-block;padding:4px 8px;margin-top:9px;border-radius:8px;background:#d7e8d4;color:#285641;font-size:12px;font-weight:700}
.card{background:var(--paper);border:1px solid var(--line);border-radius:15px;padding:16px;min-width:0}.card p+p{margin-top:7px}.description{white-space:pre-wrap}.tabs{display:flex;gap:5px;overflow:auto}.tabs button{flex:1;white-space:nowrap;background:transparent;color:var(--muted);border-color:transparent;border-radius:0;border-bottom:2px solid transparent}.tabs button.active{color:var(--green);border-bottom-color:var(--green)}
button,input,select,textarea{font:inherit}button{cursor:pointer;border:1px solid #1d4a35;border-radius:9px;min-height:44px;padding:8px 12px;background:#1d4a35;color:#fff;font-weight:650}button:disabled{opacity:.6;cursor:wait}.quiet{margin-left:auto;font-size:13px;background:#254135;border-color:#597466}.secondary{background:#edf5eb;color:#245239;border-color:#d7e6d6}button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid #438360;outline-offset:2px}
form,.stack{display:grid;gap:12px}.stack{margin-top:10px}.field{display:grid;gap:4px;min-width:0;font-weight:680;font-size:14px}.field input,.field textarea,.field select{width:100%;border-radius:8px;border:1px solid #b8cbbe;padding:8px 9px;background:white;color:var(--ink);min-height:43px;font-size:16px}.field textarea{resize:vertical}.grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.wide{grid-column:1/-1}
details{border:1px solid var(--line);border-radius:10px;background:#f9fbf8;padding:10px;min-width:0}details+details{margin-top:8px}summary{cursor:pointer;font-weight:720}summary+*{margin-top:8px}.exercise{padding:9px 0;border-top:1px solid var(--line)}.exercise p,.small{font-size:14px;color:var(--muted);white-space:pre-wrap}.exercise strong{display:block}.error{color:#a0302b}.success{color:#21593e;background:#e8f4e6;border-radius:8px;padding:8px}.entry{margin-top:4px}.entry[open]{background:#f7faf6}.detail-line{margin-top:6px}
@media(max-width:410px){.wrap{width:calc(100% - 22px)}.hero,.card{padding:13px}.tabs button{font-size:13px;padding-inline:6px}.grid.three{grid-template-columns:repeat(2,minmax(0,1fr))}}