:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,sans-serif;color:#20302d;background:#f4f5f1;font-size:15px}*{box-sizing:border-box}body{margin:0}a{color:inherit}button,input{font:inherit}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid #7cc5af;outline-offset:4px}.shell{display:grid;grid-template-columns:245px minmax(0,1fr);min-height:100vh}aside{background:#163d34;color:#e6eee8;padding:34px 25px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column}.brand{text-decoration:none;font-size:25px;font-weight:750;letter-spacing:-1px}.brand small{display:block;margin-top:9px;color:#a9c7b8;font-weight:450;font-size:12px;letter-spacing:0}.version{border:1px solid #507065;padding:5px 8px;font-size:11px;border-radius:5px;margin-left:5px;vertical-align:middle}nav{display:flex;flex-direction:column;gap:7px;margin-top:46px}nav a{text-decoration:none;padding:12px 14px;border-radius:7px;color:#bdd0c4;font-size:14px}nav a:hover,nav a[aria-current=page]{color:#fff;background:#2e5549}nav a span{display:inline-block;width:24px;font-size:11px;opacity:.7}.side-bottom{margin-top:auto;font-size:12px;color:#b1c7bb;line-height:1.7}.side-bottom button{background:none;border:0;color:#fff;padding:0;text-decoration:underline;cursor:pointer;margin-top:12px}main{min-width:0;padding:0 48px 60px}.topbar{display:flex;justify-content:space-between;align-items:center;gap:15px;min-height:80px;border-bottom:1px solid #d9dfd6;font-size:12px;color:#67756c}.status{display:inline-flex;align-items:center;gap:7px;border:1px solid #cbd8ca;background:#edf2e7;color:#4f6549;border-radius:30px;padding:7px 12px;white-space:nowrap}.status:before{content:'';width:6px;height:6px;border-radius:100%;background:#6c8151}.hero{padding:48px 0 35px;max-width:920px}.eyebrow{font-size:11px;letter-spacing:1.8px;color:#597065;font-weight:700}h1{font-size:clamp(30px,3.6vw,48px);line-height:1.12;letter-spacing:-1.8px;margin:18px 0 20px;font-weight:650;max-width:850px}.intro{font-size:17px;line-height:1.7;color:#64716b;max-width:800px}.notice{background:#e9eee5;border-left:3px solid #809578;padding:15px 18px;line-height:1.6;font-size:13px;color:#4c5e50;margin:0 0 24px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:19px}.card{background:#fff;border:1px solid #dce1d8;border-radius:10px;padding:27px;min-width:0}.card-head{display:flex;gap:15px;align-items:baseline;margin-bottom:16px}.number{font-size:11px;font-family:ui-monospace,monospace;color:#8b9b8e}h2{font-size:18px;line-height:1.4;margin:0;font-weight:650;letter-spacing:-.3px}ul{padding:0 0 0 17px;margin:0}li{font-size:14px;line-height:1.75;color:#627069;margin-bottom:13px}li:last-child{margin-bottom:0}.resources{display:flex;flex-wrap:wrap;gap:12px;margin-top:27px}.resources a,.button{display:inline-block;border:1px solid #becdbd;padding:11px 16px;border-radius:6px;text-decoration:none;background:#fff;font-size:13px;color:#28493b}.resources a:hover{background:#e9eee5}footer{margin-top:38px;border-top:1px solid #d9dfd6;padding-top:20px;color:#7b867e;font-size:11px;line-height:1.7}.login-body{min-height:100vh;display:grid;grid-template-columns:1.1fr 1fr;background:#fff}.login-intro{background:#163d34;color:#edf3e9;padding:70px;display:flex;flex-direction:column;justify-content:center}.login-intro h1{max-width:550px;font-size:clamp(36px,4vw,60px)}.login-intro p{color:#bdd0c4;line-height:1.8;max-width:440px}.login-box{padding:40px;display:flex;align-items:center;justify-content:center}.login-box form{width:100%;max-width:350px}.login-box h2{font-size:25px;margin-bottom:10px}.login-box p{color:#6e7a72;line-height:1.7;font-size:14px}label{display:block;font-size:13px;margin-top:30px;margin-bottom:8px}input{width:100%;padding:13px;border:1px solid #bdcabb;border-radius:6px}button.button{width:100%;background:#163d34;color:white;padding:13px;margin-top:18px;cursor:pointer}.error{color:#923a2e!important;background:#fcf0ed;padding:12px;border-radius:5px}.small{font-size:12px!important}@media(min-width:1550px){main{padding-left:72px;padding-right:72px}.grid{max-width:1250px}}@media(max-width:950px){.shell{grid-template-columns:200px minmax(0,1fr)}aside{padding:28px 17px}main{padding:0 24px 40px}.grid{grid-template-columns:1fr}.login-intro{padding:45px}}@media(max-width:650px){.shell{display:block}aside{height:auto;position:static;padding:22px}.brand small{display:inline;margin-left:10px}nav{margin-top:22px;flex-direction:row;flex-wrap:wrap;gap:5px}nav a{padding:9px 10px;font-size:12px}nav a span{display:none}.side-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:15px}.side-bottom p{margin:0}.side-bottom button{margin:0}.topbar{min-height:65px;font-size:11px}.hero{padding:32px 0 22px}h1{letter-spacing:-1px}.intro{font-size:15px}.card{padding:22px}.login-body{display:block}.login-intro{padding:32px}.login-intro h1{font-size:34px}.login-intro p{font-size:14px}.login-box{padding:35px 25px}.status{padding:6px 8px;font-size:10px}main{padding:0 18px 35px}}

/* AMD3 workspace navigation: one compact header shared by lab and guide. */
.shell{display:block}.workspace-header{position:sticky;top:0;z-index:30;height:76px;width:100%;padding:0 36px;display:flex;flex-direction:row;align-items:center;gap:48px;background:#fff;color:#20302d;border-bottom:1px solid #dce3db}.workspace-header .brand{display:flex;align-items:center;gap:10px;font-size:22px;letter-spacing:-.7px;white-space:nowrap}.workspace-header .brand .version{margin:0;padding:4px 7px;border-color:#c7d8c9;color:#315341;letter-spacing:.2px;font-size:10px}.workspace-header .brand small{display:none}.workspace-header nav{display:flex;flex-direction:row;align-items:center;gap:5px;margin:0;height:100%}.workspace-header nav a{display:flex;align-items:center;justify-content:center;height:38px;padding:0 18px;color:#6b786f;border-radius:6px;font-size:14px;font-weight:550;text-decoration:none;white-space:nowrap}.workspace-header nav a:hover{background:#f2f5f0;color:#274a38}.workspace-header nav a[aria-current]{background:#e8efe5;color:#254b36}.workspace-header .side-bottom{margin:0 0 0 auto;display:flex;align-items:center}.workspace-header .side-bottom button{margin:0;color:#65756a;text-decoration:none;font-size:12px;border:1px solid #d7e0d4;padding:8px 12px;border-radius:6px;background:white}.workspace-header .side-bottom button:hover{background:#f3f6ef;color:#254b36}main{max-width:1440px;margin:0 auto;padding:0 36px 48px}.topbar{min-height:58px;border-bottom:0;font-size:11px}.hero{padding:22px 0 28px}.hero h1{font-size:clamp(30px,3.3vw,43px)}.guide-nav{display:flex;flex-direction:row;gap:6px;margin:12px 0 0;overflow-x:auto;white-space:nowrap;padding:0 0 10px}.guide-nav a{padding:8px 12px;text-decoration:none;font-size:12px;color:#6b786f;border:1px solid transparent;border-radius:5px}.guide-nav a:hover{background:#eaf0e6;color:#254b36}.guide-nav a[aria-current=page]{color:#254b36;border-color:#c9d8c6;background:#edf2e8}#references,#history,#review{scroll-margin-top:96px}@media(max-width:750px){.workspace-header{padding:0 20px;gap:22px}.workspace-header nav a{padding:0 13px}main{padding:0 20px 35px}}@media(max-width:540px){.workspace-header{height:auto;min-height:106px;display:grid;grid-template-columns:1fr auto;gap:0 12px;padding:14px 18px 0}.workspace-header .brand{font-size:21px}.workspace-header nav{grid-column:1/-1;grid-row:2;display:grid;grid-template-columns:repeat(5,1fr);gap:4px;padding:10px 0 9px;width:100%}.workspace-header nav a{height:34px;padding:0 10px;font-size:13px}.workspace-header .side-bottom{grid-row:1;grid-column:2;margin:0}.workspace-header .side-bottom button{font-size:11px;padding:6px 10px}.topbar{min-height:52px}.hero{padding-top:15px}.hero h1{font-size:31px}main{padding:0 18px 30px}#references,#history,#review{scroll-margin-top:126px}.guide-nav{gap:2px}.guide-nav a{padding:7px 10px}}

@media(max-width:750px){.workspace-header{gap:16px}.workspace-header nav{gap:2px}.workspace-header nav a{padding:0 11px}}@media(max-width:540px){.workspace-header nav a{font-size:12px;padding:0 5px}}