:root{--ink:#182c35;--muted:#70818a;--line:#e3e9e8;--green:#087e72;--bg:#fbfcfa}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Arial,'Malgun Gothic',sans-serif;font-size:14px}a{color:inherit;text-decoration:none}button,input{font:inherit}aside{width:264px;position:fixed;inset:0 auto 0 0;background:#f3f6f2;border-right:1px solid var(--line);padding:30px 22px 110px;overflow:auto}.brand{display:flex;gap:12px;align-items:center;font-size:12px;letter-spacing:1px}.brand b{display:block;font-size:23px;letter-spacing:-1px;margin-top:2px}.brand small{display:block;font-size:8px;letter-spacing:2px;margin-top:7px}.logo{width:40px;height:44px;background:var(--green);color:white;display:grid;place-items:center;font-size:26px;border-radius:9px}.version{font-size:11px;color:var(--muted);margin:28px 0 16px}.version span{float:right;border:1px solid #cfd9d2;border-radius:4px;padding:1px 5px}.search{display:flex;align-items:center;border:1px solid #dce3dc;background:white;border-radius:6px;padding:9px;gap:8px}.search input{border:0;outline:0;width:100%;font-size:12px;background:transparent}.search kbd{color:#93a19b}nav h3{font-size:10px;letter-spacing:1.5px;color:#829087;margin:26px 10px 10px}nav a{display:flex;gap:10px;padding:9px 11px;font-size:12px;color:#52646c;border-radius:5px;margin:2px 0}nav a.active{background:#dfece4;color:#086d60;font-weight:bold}nav a:hover{background:#e7ede6}nav a em{font-style:normal;font-size:10px;color:#8e9d96;min-width:18px}.side-bottom{position:fixed;bottom:0;left:0;width:263px;background:#f3f6f2;padding:20px 24px;border-top:1px solid var(--line);font-size:11px;color:#64776b}.side-bottom small{display:block;font-size:9px;margin-top:9px}.dot{display:inline-block;width:6px;height:6px;background:#319b75;border-radius:50%;margin-right:7px}.shell{margin-left:264px}header{height:68px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding:0 42px;background:#fff;font-size:12px;color:#697d83}.slash{margin:0 14px;color:#c0cccb}.header-right{display:flex;gap:18px;align-items:center}.draft{font-size:9px;letter-spacing:1px;background:#f0f4ef;padding:6px 9px;border-radius:4px}.private{font-size:11px}#menu{display:none}main{max-width:1260px;margin:auto;padding:48px 48px 70px}.eyebrow{font-size:10px;letter-spacing:2px;color:var(--green);font-weight:bold;margin-bottom:18px}h1{font-size:42px;line-height:1.2;letter-spacing:-2px;margin:0 0 20px}h1 span{color:var(--green)}.lead{font-size:14px;line-height:1.9;color:#728087;max-width:640px}.hero{padding:10px 0 32px;position:relative}.chips{display:flex;gap:8px;margin-top:24px;flex-wrap:wrap}.chip{border:1px solid #dde5df;background:white;border-radius:5px;font-size:10px;padding:7px 10px;color:#60726c}.notice{display:flex;gap:14px;background:#edf4ed;border:1px solid #d9e7dc;border-radius:7px;padding:17px 20px;line-height:1.7;color:#536d5f;font-size:12px;margin:10px 0 36px}.notice strong{color:#28674e}.section-title{display:flex;align-items:baseline;justify-content:space-between;margin:34px 0 17px}.section-title h2{font-size:18px;letter-spacing:-.5px;margin:0}.section-title small{color:#8a989a;font-size:10px}.journey{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--line);border-radius:8px;background:white;overflow:hidden}.step{padding:22px 18px;border-right:1px solid var(--line);position:relative}.step:last-child{border:0}.step em{font-style:normal;font-family:monospace;font-size:11px;color:#439185}.step h3{font-size:13px;margin:14px 0 9px}.step p{font-size:11px;color:#82918e;line-height:1.7;margin:0}.step .arrow{position:absolute;right:12px;top:23px;color:#a6b7ae}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.card{border:1px solid var(--line);border-radius:8px;background:white;padding:23px;transition:.15s}.card:hover{border-color:#6eac95;transform:translateY(-2px)}.card-top{display:flex;justify-content:space-between;align-items:center}.icon{width:32px;height:32px;border-radius:7px;background:#eef4ef;display:grid;place-items:center;color:#257864;font-family:monospace;font-weight:bold}.tag{font-size:9px;color:#88968e;background:#f4f6f2;border-radius:3px;padding:4px 6px}.card h3{font-size:15px;margin:20px 0 10px}.card p{font-size:12px;color:#82908e;line-height:1.8;min-height:42px}.card-bottom{font-size:10px;color:#458375;border-top:1px solid #eef1ed;padding-top:15px;margin-top:18px;display:flex;justify-content:space-between}.two-col{display:grid;grid-template-columns:1.3fr 1fr;gap:20px}.panel{background:white;border:1px solid var(--line);border-radius:8px;padding:23px}.panel h3{font-size:14px;margin:0 0 18px}.row{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid #edf0ed;font-size:12px}.row:last-child{border:0}.row span:last-child{color:#85948c;font-size:11px}.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:10px;color:#7e8e84;margin-top:18px}.legend b{font-weight:normal;background:#eaf1e8;color:#53774e;padding:4px 7px;border-radius:3px}.legend b:nth-child(2){background:#edf0f8;color:#6c7d9b}.legend b:nth-child(3){background:#fbf1df;color:#a17f43}.page-grid{display:grid;grid-template-columns:minmax(0,1fr) 170px;gap:38px}.toc{border-left:1px solid var(--line);padding-left:20px;font-size:11px;color:#86938c}.toc a{display:block;margin-top:17px}.empty{border:1px dashed #d4dfd6;border-radius:7px;padding:30px 25px;margin-top:18px;background:#f7f9f5}.empty h3{font-size:14px;margin:0 0 10px}.empty p{color:#86938c;font-size:12px;line-height:1.8;margin:0}.scope{line-height:2;color:#7f8e85;font-size:12px}.pager{display:flex;justify-content:space-between;margin-top:35px;gap:20px}.pager a{border:1px solid var(--line);border-radius:6px;padding:15px 20px;background:white;font-size:12px}.diagram{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:25px 0}.diagram a{padding:16px;background:white;border:1px solid #d8e5dc;border-radius:6px;font-size:12px}.diagram i{color:#90aaa0;font-style:normal}footer{border-top:1px solid var(--line);padding:22px 48px;display:flex;justify-content:space-between;color:#94a098;font-size:10px}@media(min-width:1500px){main{padding-top:65px}}@media(max-width:1100px){main{padding:32px}.cards{grid-template-columns:repeat(2,1fr)}.journey{grid-template-columns:repeat(3,1fr)}.step{border-bottom:1px solid var(--line)}.page-grid{grid-template-columns:1fr}.toc{display:none}}@media(max-width:760px){aside{transform:translateX(-100%);z-index:20;transition:.2s}aside.open{transform:translateX(0);box-shadow:10px 0 50px #0002}.shell{margin:0}header{padding:0 20px;gap:15px}#menu{display:block;background:none;border:0;color:var(--green);font-size:20px}.header-right .private{display:none}main{padding:30px 20px}h1{font-size:32px}.cards,.two-col{grid-template-columns:1fr}.journey{grid-template-columns:1fr}.step{padding:17px 20px;border-right:0}.step h3{display:inline-block;margin:0 15px}.step p{margin:8px 0 0 32px}footer{padding:20px;gap:15px}.section-title small{display:none}}

.spec-table{border-collapse:collapse;width:100%;font-size:12px;line-height:1.8}.spec-table th,.spec-table td{text-align:left;padding:13px 14px;border-bottom:1px solid var(--line);vertical-align:top}.spec-table th{width:32%;font-weight:600;color:#426458;background:#f4f7f2}.board-figure{margin:20px 0 28px;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:white}.board-figure img{display:block;width:100%;height:auto}.board-figure figcaption{padding:13px 18px;font-size:11px;color:var(--muted);line-height:1.8}.board-figure a{color:var(--green)}@media(max-width:760px){.spec-table th,.spec-table td{padding:10px 8px}.row{gap:12px;line-height:1.7}.row span:last-child{text-align:right}}

.tech-section{margin-bottom:38px;scroll-margin-top:25px;font-size:13px;line-height:1.95}.tech-section h2{font-size:19px;line-height:1.6;border-bottom:1px solid var(--line);padding-bottom:14px;margin:0 0 20px}.tech-section h2 span{font-family:monospace;font-size:12px;color:#6d9c8b;margin-right:12px}.tech-section p,.tech-section li{color:#536a70}.tech-section a{color:var(--green);text-decoration:underline;text-underline-offset:3px}.tech-section code{font-family:Consolas,monospace;font-size:12px;background:#edf2ed;padding:2px 4px;border-radius:3px;overflow-wrap:anywhere}.command-log{background:#193630;color:#d9efe4;padding:22px;border-radius:8px;overflow:auto;line-height:1.8}.command-log code{background:none;color:inherit;padding:0;white-space:pre}.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:7px;background:white;margin:18px 0}.tech-section .spec-table{min-width:480px}.tech-section .spec-table th{width:auto}.tech-section .spec-table td{min-width:110px;overflow-wrap:anywhere}.source-note{font-size:11px;line-height:1.9;color:var(--muted)}

.response-map{margin:26px 0 30px;border:1px solid #cddfd3;border-radius:12px;overflow:hidden;background:#f5f8f2}.response-map figcaption{padding:24px 25px 18px;display:flex;flex-direction:column;gap:8px}.map-kicker{font-size:9px;letter-spacing:1.8px;color:#35836e;font-weight:bold}.response-map figcaption strong{font-size:19px;color:#244b3e;letter-spacing:-.5px}.response-map figcaption>span:last-child{font-size:12px;color:#71867b}.map-entry{display:flex;align-items:center;justify-content:center;gap:15px;margin:0 24px 18px;padding:12px;background:#e5efe5;border-radius:6px;font-size:12px;color:#426758}.map-entry i{font-style:normal;color:#719581}.map-states{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;padding:0 24px}.map-states>div{background:#fff;border:1px solid #dbe6da;border-radius:7px;padding:15px 12px}.map-states em{font:11px Consolas,monospace;color:#6c9c86;font-style:normal}.response-map h4{margin:8px 0 10px;font-size:12px;color:#254c40;line-height:1.6}.map-states code{font-size:10px;background:#f0f5ee;display:inline-block;color:#327763;padding:3px 5px}.response-map .map-states p{font-size:10px;color:#809085;margin:9px 0 0}.response-map .map-caption{margin:12px 24px 20px;font-size:10px;color:#819186;line-height:1.8}.map-routes{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:0 24px 22px}.map-routes>div{display:flex;gap:12px;padding:15px;border-radius:7px;background:#e6f0ed;border:1px solid #d3e3dc}.map-routes>div.map-recovery{background:#f5f0e4;border-color:#e7dfca}.map-symbol{font-size:25px;line-height:1.4;color:#388372}.map-recovery .map-symbol{color:#a58745}.map-routes h4{margin:0 0 5px}.response-map .map-routes p{margin:0;font-size:11px;color:#708579;line-height:1.8}.map-foot{padding:13px 24px;border-top:1px solid #dce6d8;color:#748878;font-size:10px;background:#edf3e9;line-height:1.9}@media(max-width:1050px){.map-states{grid-template-columns:repeat(2,minmax(0,1fr))}.map-routes{grid-template-columns:1fr}}@media(max-width:450px){.map-states{padding:0 14px;gap:8px}.response-map figcaption{padding:20px 16px}.map-entry{margin-left:14px;margin-right:14px;gap:8px;font-size:10px}.map-routes{margin-left:14px;margin-right:14px}}

.map-entry{flex-wrap:wrap}

.cmux-link{display:flex;align-items:center;gap:16px;margin:0 24px 22px}.cmux-end{padding:16px 18px;border:1px solid #cddfd3;border-radius:7px;background:white;text-align:center;min-width:130px}.cmux-end strong{display:block;color:#285342;font-size:14px}.cmux-end small{display:block;font-size:10px;color:#7a8e80;margin-top:5px}.cmux-wire{flex:1;text-align:center;border-bottom:2px solid #8ab69e;padding:5px 0 10px;color:#437b63;font-size:11px}.cmux-wire small{display:block;font-size:10px;color:#819487;margin-top:5px}.cmux-channels{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0 24px}.cmux-channels>div{background:white;border:1px solid #dbe6da;border-top:3px solid #8fb8a0;border-radius:7px;padding:16px}.cmux-channels em{font:9px Consolas,monospace;letter-spacing:1px;color:#729b83}.response-map .cmux-channels p{font-size:11px;color:#7a8b80;margin:0}.cmux-enable{display:flex;align-items:center;justify-content:center;gap:15px;padding:14px;margin:0 24px 22px;border-radius:6px;background:#e4eee3;font-size:12px;color:#426750}.cmux-enable code{background:white}@media(max-width:600px){.cmux-link{gap:8px;flex-wrap:wrap}.cmux-end{min-width:90px;padding:12px 8px}.cmux-wire{min-width:100px}.cmux-channels{grid-template-columns:1fr}.cmux-enable{flex-wrap:wrap;gap:8px}}

.cmux-example{margin:0 24px 24px}.cmux-example>h4{font-size:14px}.response-map .cmux-example p{font-size:12px;color:#607a6b;line-height:1.9}.cmux-example .table-scroll{background:white}

.sim-lock-emphasis{display:block;margin:16px 0;padding:15px 18px;border-left:4px solid #b77a28;border-radius:0 6px 6px 0;background:#fbf2e3;color:#80551f;line-height:1.95}.sim-lock-emphasis code{background:#f4e5cd;color:#744b19}

.resource-step{padding:14px 16px;border:1px solid #d6e4d9;background:white;border-radius:7px;color:#326a53;font-size:12px}

.search-snippet{display:block;margin-top:6px;font-size:10px;line-height:1.7;color:#75877d;font-weight:normal;overflow-wrap:anywhere}.search-count{font-size:10px;color:#44806a;margin:18px 8px 4px}nav a>span{min-width:0}

.cert-screenshot{max-width:850px}.cert-screenshot img{max-height:600px;object-fit:contain;background:#f4f6f2}

.hex-workbench{margin:24px 0;border:1px solid #cbded3;border-radius:12px;background:#f3f7f1;padding:24px}.hex-workbench-head{display:flex;align-items:center;justify-content:space-between;gap:15px}.hex-workbench-head h4{font-size:19px;color:#265b48;margin:8px 0}.hex-local{font-size:10px;color:#688576;border:1px solid #d2e2d5;border-radius:20px;padding:5px 10px;white-space:nowrap}.tech-section .hex-help{font-size:12px;color:#75877d;margin:8px 0 22px}.hex-columns{display:grid;grid-template-columns:1fr 1fr;gap:18px}.hex-columns label{display:flex;justify-content:space-between;font-size:12px;font-weight:bold;color:#385c4b;margin-bottom:10px;gap:10px}.hex-columns label span{font-size:10px;font-weight:normal;color:#7d9385}.hex-columns textarea{width:100%;height:205px;resize:vertical;min-height:150px;padding:16px;border:1px solid #cddbd0;border-radius:7px;background:white;color:#244a3c;font:12px/1.9 Consolas,monospace;outline:none;box-sizing:border-box}.hex-columns textarea:focus{border-color:#258d73;box-shadow:0 0 0 3px #258d7317}.hex-columns textarea[readonly]{background:#eaf1e7;overflow-wrap:anywhere;word-break:break-all;white-space:pre-wrap}.hex-options{display:flex;flex-wrap:wrap;gap:10px 22px;margin:17px 0;font-size:11px;color:#647d6c}.hex-options label{display:flex;align-items:center;gap:6px;cursor:pointer}.hex-options input{accent-color:#087e72}.hex-actions{display:flex;flex-wrap:wrap;gap:9px}.hex-actions button{padding:10px 15px;border:1px solid #c9dbcf;border-radius:6px;background:white;color:#416b56;font-size:12px;cursor:pointer}.hex-actions #http-to-hex{background:#087e72;border-color:#087e72;color:white;font-weight:bold}.hex-actions #http-to-hex span{margin-left:18px}.hex-actions button:hover{filter:brightness(.96)}.hex-actions button:disabled{opacity:.4;cursor:default}.tech-section .hex-status{font-size:11px;color:#66816d;margin:16px 0 0;line-height:1.8;overflow-wrap:anywhere}@media(max-width:950px){.hex-columns{grid-template-columns:1fr}.hex-workbench{padding:18px}.hex-local{display:none}}

.tech-section .hex-input-note{font-size:11px;color:#708675;line-height:1.9;margin:14px 0 18px}

.tech-section .hex-status{font-size:14px;line-height:1.9}.hex-status strong{font-size:15px}

.sim-product{max-width:620px;margin:20px auto 28px;background:#f7f8f5}.sim-product img{box-sizing:border-box;padding:22px 24px 8px}.sim-product figcaption{text-align:center}@media(max-width:600px){.sim-product img{padding:12px 12px 4px}}

.two-col.sim-feature-columns{grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch}.sim-feature-columns>.panel{min-width:0}@media(max-width:760px){.two-col.sim-feature-columns{grid-template-columns:1fr}}

#nav a.arduino-guide-link{margin:10px 0 18px;padding:13px 12px;border:1px solid #bed2c6;border-radius:8px;background:#edf5ee;color:#245b45;font-weight:700}#nav a.arduino-guide-link em{display:flex;align-items:center;justify-content:center;color:#287b61}#nav a.arduino-guide-link:hover,#nav a.arduino-guide-link.active{background:#dceee1;border-color:#83ad95}

#nav a.arduino-guide-link em{min-width:32px;color:#00878f}#nav a.arduino-guide-link em svg{flex-shrink:0}

.practice-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:24px 0}.practice-summary small,.practice-example-top{font:11px monospace;letter-spacing:.06em;color:var(--green)}.practice-examples{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.practice-example{display:flex;flex-direction:column;text-decoration:none;color:inherit;transition:border-color .15s,transform .15s}.practice-example:hover{border-color:#83ad95;transform:translateY(-2px)}.practice-example-top,.practice-example-bottom{display:flex;justify-content:space-between;gap:10px;align-items:center}.practice-example-top small{font:10px sans-serif;color:var(--muted);background:#eff3ec;padding:4px 7px;border-radius:4px}.practice-example h3{margin:16px 0 8px;overflow-wrap:anywhere}.practice-example-bottom{margin-top:auto;padding-top:18px;font-size:11px;color:var(--muted);flex-wrap:wrap}.practice-placeholder{padding:22px;border:1px dashed #cbd8ce;border-radius:8px;background:#f8faf6;color:var(--muted);font-size:13px;line-height:1.8}.practice-placeholder small{font-size:11px}.practice-back{display:inline-block;margin:0 0 24px;color:var(--green);font-size:13px}#nav a.practice-child{padding-left:16px;font-size:11px}#nav a.practice-child em{font-size:10px}@media(max-width:760px){.practice-summary,.practice-examples{grid-template-columns:1fr}}

#nav .practice-chapter{margin:20px 12px 6px;padding:10px 0 5px;border-top:1px solid var(--line);color:var(--green);font-size:12px;font-weight:700;line-height:1.5}#nav .practice-chapter>span{display:block;font-size:9px;letter-spacing:1px;color:var(--muted);margin-bottom:3px}#nav .practice-chapter>small{display:block;font-size:10px;font-weight:400;color:var(--muted);margin-top:2px}#nav a.practice-child{margin-left:8px}

/* CodeZoo branding keeps the supplied logo aspect ratio. */
.codezoo-sidebar-link{display:flex;align-items:center;justify-content:center;flex:0 0 auto;min-height:28px;padding:0}
.codezoo-sidebar-link img{display:block;width:94px;height:auto}
.brand-title{display:block;min-width:0}
.modem-title-row{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:20px}
.modem-title-row h1{margin-bottom:0}
.codezoo-intro-link{display:block;flex:0 0 auto}
.codezoo-intro-link img{display:block;width:340px;max-width:100%;height:auto}
.codezoo-sidebar-link:focus-visible,.codezoo-intro-link:focus-visible,.brand-title:focus-visible{outline:2px solid var(--green);outline-offset:4px}
@media(max-width:600px){.modem-title-row{gap:16px}.codezoo-intro-link img{width:250px}}

/* Stacked sidebar brand. */
#sidebar .brand{flex-direction:column;align-items:flex-start;gap:8px}
.brand-maker{display:block;font-size:12px;letter-spacing:1px}

/* Circular Gmail mark beside the practice navigation title. */
#nav .gmail-nav-icon{display:inline-block;width:22px;height:22px;margin-left:7px;vertical-align:middle;flex-shrink:0}

#nav .aws-nav-icon{display:inline-block;width:22px;height:22px;margin-left:7px;vertical-align:middle;flex-shrink:0}

/* Align example numbers, labels and service marks on one vertical center. */
#nav a.practice-child{align-items:center}
#nav a.practice-child>em{line-height:22px}
#nav a.practice-child>span{display:flex;align-items:center;flex-wrap:wrap;line-height:22px}
#nav a.practice-child .search-snippet{flex-basis:100%}
#nav .gmail-nav-icon,#nav .aws-nav-icon{display:block;vertical-align:initial}