:root{--navy:#071a37;--blue:#0868e9;--cyan:#22d3ee;--ink:#15243d;--muted:#65728a;--line:#dce3ec;--bg:#f3f6fa;--green:#18b67b;--terminal:#071426;--white:#fff}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px}.topbar{height:72px;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1440px)/2));box-shadow:0 2px 12px #04112633}.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:linear-gradient(145deg,#14b8ff,#0a58dc);font-weight:900;font-size:26px;font-style:italic}.brand strong{display:block;font-size:18px;line-height:1.05}.brand small{display:block;color:#93a9c6;font-size:12px;letter-spacing:.12em;text-transform:uppercase;margin-top:4px}.top-actions{display:flex;align-items:center;gap:13px}.session{font-size:14px;color:#c3d1e3}.session i,.connected i,.status-pill i{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--green);margin-right:6px;box-shadow:0 0 0 3px #18b67b20}.icon-button{width:38px;height:38px;background:#102b50;color:#dce9f9;border:1px solid #284464;border-radius:9px;font-size:21px;cursor:pointer}.avatar{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:#eef5ff;color:#0c3d78;font-weight:800;font-size:13px}main{max-width:1440px;margin:auto;padding:28px 24px 48px}.lab-heading{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:22px}.crumb{font-size:12px;font-weight:800;color:var(--blue);letter-spacing:.1em}.crumb span{color:#a7b1c0;margin:0 7px}.lab-heading h1{font-size:clamp(25px,2.3vw,34px);margin:7px 0 5px;letter-spacing:-.035em}.lab-heading p{margin:0;color:var(--muted)}.progress-wrap{width:275px;margin-bottom:4px}.progress-label{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin-bottom:8px}.progress-label strong{color:var(--blue)}.progress{height:7px;border-radius:20px;background:#dbe4f0;overflow:hidden}.progress span{display:block;width:0;height:100%;background:linear-gradient(90deg,#0a69e8,#21bad8);transition:width .35s ease}.workspace{display:grid;grid-template-columns:minmax(0,1.75fr) minmax(310px,.75fr);gap:20px}.left-column,.side-column{display:flex;flex-direction:column;gap:20px}.card,.terminal-card{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 5px 24px #223d6410;overflow:hidden}.card-title,.terminal-head{height:57px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--line)}.card-title>div,.terminal-head>div{display:flex;align-items:center;gap:10px}.step{width:25px;height:25px;border-radius:7px;display:grid;place-items:center;background:#e8f1ff;color:var(--blue);font-size:13px;font-weight:800}.step.dark{background:#19314e;color:#79c7ff}.status-pill,.points{font-size:12px;font-weight:700;background:#effaf6;color:#12815b;padding:6px 9px;border-radius:20px}.topology{min-height:184px;display:flex;align-items:center;justify-content:center;padding:24px 6%;}.node{display:flex;flex-direction:column;align-items:center;min-width:100px}.node strong{margin-top:9px}.node small{font-size:12px;color:var(--muted);margin-top:2px}.screen{width:53px;height:40px;border:3px solid #8da0b6;border-radius:5px;display:grid;place-items:center;color:#596c83;font-weight:800;background:#eff3f7;box-shadow:0 5px 0 -2px #8da0b6}.switch-icon{width:62px;height:45px;border-radius:8px;background:linear-gradient(150deg,#1478f4,#064da8);display:flex;gap:5px;align-items:center;justify-content:center;box-shadow:0 8px 20px #075fc63d}.switch-icon b{width:7px;height:7px;background:#8fe9ff;border-radius:2px}.node.active{position:relative}.node.active:before{content:"";position:absolute;top:-5px;right:15px;width:10px;height:10px;background:#20cb8d;border:3px solid #fff;border-radius:50%}.link{height:45px;flex:1;max-width:210px;min-width:70px;position:relative;margin:0 -3px}.link i{position:absolute;left:0;right:0;top:28px;height:3px;background:#78a6d8}.link i:after,.link i:before{content:"";position:absolute;top:-3px;width:9px;height:9px;border-radius:50%;background:var(--green)}.link i:before{left:0}.link i:after{right:0}.link span{position:absolute;top:2px;width:100%;text-align:center;font-size:12px;color:var(--muted);font-weight:700}.terminal-card{border-color:#14263e;background:var(--terminal)}.terminal-head{color:#edf5ff;background:#0b1d33;border-color:#233852}.terminal-head strong{font-size:15px}.connected{font-size:12px;color:#85a0bd;margin-left:7px}.terminal-head button{border:0;background:transparent;color:#8ea7c2;cursor:pointer;font-size:13px}.terminal{height:360px;overflow-y:auto;padding:18px 19px;color:#cce2f6;font:15px/1.6 "SFMono-Regular",Consolas,"Liberation Mono",monospace;cursor:text}.output{white-space:pre-wrap}.cyan{color:var(--cyan)}.input-row{display:flex}.input-row span{white-space:pre}.input-row input{flex:1;min-width:0;background:transparent;border:0;outline:0;color:#fff;font:inherit;padding:0 0 0 5px;caret-color:var(--cyan)}.terminal-tip{min-height:46px;background:#0b1d33;border-top:1px solid #213751;color:#8fa7c2;display:flex;align-items:center;gap:10px;padding:9px 18px;font-size:12px}.terminal-tip>span:first-child{color:#33caec;font-size:20px}.terminal-tip code{color:#9be6f6}.mission-copy{padding:17px 18px 8px;margin:0;color:#536178;font-size:14px;line-height:1.5}.objectives{padding:4px 18px 12px}.objective{display:grid;grid-template-columns:24px 1fr;gap:10px;padding:11px 0;border-bottom:1px solid #edf0f4}.objective:last-child{border:0}.check{width:21px;height:21px;border:2px solid #c9d3df;border-radius:50%;display:grid;place-items:center;color:white;font-size:12px;margin-top:1px}.objective.done .check{background:var(--green);border-color:var(--green)}.objective strong{display:block;font-size:13px}.objective small{display:block;font-size:12px;color:#78869b;margin-top:3px}.validate,.reset{width:calc(100% - 36px);height:45px;margin:4px 18px;border-radius:9px;font-weight:800;font-size:14px;cursor:pointer}.validate{border:0;background:var(--blue);color:#fff;box-shadow:0 7px 15px #0868e92b}.validate:hover{background:#075dcf}.reset{border:1px solid #d5dde8;background:#fff;color:#536178;margin-top:7px;margin-bottom:16px}.result{display:none;margin:0 18px 17px;padding:10px;border-radius:8px;font-size:13px}.result.error{display:block;background:#fff2f0;color:#a84235}.result.success{display:block;background:#effaf6;color:#157351}.commands-card{padding-bottom:14px}.bulb{color:#0e76ed;font-size:20px}.command-chip{width:calc(100% - 36px);margin:10px 18px 0;padding:10px 12px;border:1px solid #dce4ee;border-radius:8px;background:#f7f9fc;text-align:left;display:flex;justify-content:space-between;cursor:pointer}.command-chip code{color:#143964}.command-chip span{font-size:11px;color:#748197}.commands-card p{font-size:12px;line-height:1.5;color:#748197;margin:13px 18px 2px}.commands-card p code{color:#31557d}dialog{border:0;border-radius:18px;padding:32px;max-width:390px;text-align:center;color:var(--ink);box-shadow:0 24px 70px #061a3b55}dialog::backdrop{background:#04142aa8;backdrop-filter:blur(3px)}.success-icon{width:58px;height:58px;margin:auto;border-radius:50%;display:grid;place-items:center;background:#e7fbf3;color:var(--green);font-size:30px;font-weight:900}.score{margin:18px auto;display:flex;justify-content:center;align-items:baseline;gap:5px}.score strong{font-size:34px;color:var(--blue)}.score span{color:var(--muted)}dialog h2{margin:15px 0 8px}dialog p{color:var(--muted);line-height:1.5}dialog button{border:0;border-radius:8px;background:var(--blue);color:#fff;padding:12px 20px;font-weight:800;cursor:pointer}@media(max-width:900px){.workspace{grid-template-columns:1fr}.side-column{display:grid;grid-template-columns:1fr 1fr}.terminal{height:330px}}@media(max-width:640px){.topbar{height:64px;padding:0 15px}.brand strong{font-size:16px}.brand small,.session{display:none}.avatar,.icon-button{width:35px;height:35px}main{padding:20px 12px 36px}.lab-heading{display:block}.lab-heading h1{font-size:25px}.lab-heading p{font-size:14px}.progress-wrap{width:100%;margin-top:17px}.workspace{gap:13px}.left-column,.side-column{gap:13px}.side-column{display:flex}.topology{min-height:160px;padding:22px 7px}.node{min-width:72px}.node strong{font-size:13px}.node small{font-size:10px}.screen{width:46px;height:35px}.switch-icon{width:53px;height:40px}.link{min-width:35px}.terminal{height:365px;padding:15px 12px;font-size:13px}.terminal-head{padding:0 12px}.connected{display:none}.terminal-tip{font-size:11px;padding:9px 12px}.card-title{padding:0 14px}.mission-copy,.objectives{padding-left:14px;padding-right:14px}.validate,.reset,.command-chip{width:calc(100% - 28px);margin-left:14px;margin-right:14px}}
/* Perfil y experiencia del estudiante */
.profile-pill{border:1px solid #284464;background:#102b50;color:#fff;border-radius:11px;padding:4px 5px 4px 12px;display:flex;align-items:center;gap:10px;cursor:pointer;text-align:right}.profile-pill:hover{background:#16365e}.profile-copy small{display:block;color:#a9bdd5;font-size:11px;max-width:130px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.profile-copy strong{display:block;color:#7ed8ff;font-size:13px;margin-top:1px}.xp-breakdown{margin:18px 0 8px;padding:12px 14px;background:#f5f8fc;border-radius:10px;text-align:left}.xp-row{display:flex;justify-content:space-between;gap:18px;padding:5px 0;color:#536178;font-size:13px}.xp-row strong{color:#137a59}.total-xp{margin:3px 0 20px!important;font-size:13px}.total-xp strong{color:var(--ink)}
.xp-rules{margin:0 18px 5px;padding:8px 10px;border-radius:8px;background:#f2f7ff;color:#46617f;font-size:11px;line-height:1.45}
.badge-list{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:12px}.badge{display:flex;align-items:center;gap:8px;padding:9px;border:1px solid #e1e7ef;border-radius:9px;background:#f7f9fc;color:#8b96a7}.badge.unlocked{background:#fff8e8;border-color:#f0d58f;color:#6f5312}.badge-icon{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#e6ebf1;filter:grayscale(1);font-size:15px}.badge.unlocked .badge-icon{background:#ffe7a7;filter:none}.badge strong{display:block;font-size:11px}.badge small{display:block;font-size:9px;line-height:1.2;margin-top:2px}.new-badges{display:none;margin:4px 0 10px;padding:9px;border-radius:9px;background:#fff8e5;color:#765711;font-size:12px;font-weight:700}.new-badges.visible{display:block}
.demo-pill{font-size:10px;font-weight:800;color:#536d8d;background:#edf3fa;border-radius:20px;padding:5px 8px}.leaderboard{padding:8px 12px 3px}.rank-row{display:grid;grid-template-columns:28px 30px 1fr auto;gap:8px;align-items:center;padding:8px;border-radius:9px}.rank-row+.rank-row{border-top:1px solid #eef1f5}.rank-row.me{background:#eaf3ff;border:1px solid #bcd7fa}.rank-position{font-size:12px;font-weight:900;color:#6b7890;text-align:center}.rank-position.top{font-size:17px}.rank-avatar{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:#e8eef6;color:#34516f;font-size:10px;font-weight:900}.rank-row.me .rank-avatar{background:#176fe1;color:#fff}.rank-name{font-size:12px;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.rank-name small{display:block;color:#75849a;font-size:9px;margin-top:1px}.rank-xp{font-size:12px;font-weight:900;color:#0a65da}.ranking-note{margin:5px 18px 13px;color:#718096;font-size:11px;line-height:1.4}
.auth-button{height:38px;border:1px solid #3b5878;border-radius:9px;background:#17375d;color:#fff;padding:0 12px;font-weight:800;cursor:pointer}.auth-dialog{width:min(430px,calc(100% - 24px));padding:28px;text-align:left}.auth-dialog::backdrop{background:#04142ad9}.auth-brand{display:flex;align-items:center;gap:10px;margin-bottom:22px}.auth-brand div strong,.auth-brand div small{display:block}.auth-brand div small{font-size:10px;color:#7a8799;letter-spacing:.12em;text-transform:uppercase}.dialog-close{position:absolute;right:15px;top:13px!important;background:transparent!important;color:#718096!important;font-size:25px!important;padding:4px 8px!important}.auth-form h2{font-size:22px;margin:5px 0 6px}.auth-form>p{font-size:13px;margin:0 0 17px}.auth-form label{display:block;font-size:12px;font-weight:800;color:#40516a;margin:12px 0}.auth-form input{display:block;width:100%;height:43px;margin-top:6px;border:1px solid #ccd7e4;border-radius:8px;padding:0 11px;font:inherit;font-size:14px;outline:none}.auth-form input:focus{border-color:#1672e8;box-shadow:0 0 0 3px #1672e818}.auth-form button[type=submit]{width:100%;margin-top:7px}.auth-help{margin:16px 0 0;font-size:12px;line-height:1.6;color:#64748b;text-align:center}.auth-help a:not([hidden]){display:block;margin-top:6px;color:#176bce;font-weight:800;text-decoration:none}.auth-message{display:none;margin-top:12px;padding:10px;border-radius:8px;font-size:12px;line-height:1.4}.auth-message.visible{display:block;background:#eef6ff;color:#285d96}.auth-message.error{display:block;background:#fff0ee;color:#a23d33}
.guide-actions{display:flex;gap:9px;margin-top:15px}.guide-button{height:38px;border:1px solid #0b6ce5;border-radius:9px;background:#eaf3ff;color:#075fcf;padding:0 14px;font-weight:800;cursor:pointer}.guide-button.secondary{border-color:#d2dce9;background:#fff;color:#40516a}.guide-button span{display:inline-grid;place-items:center;width:20px;height:20px;margin-right:5px;border-radius:6px;background:#0b6ce5;color:#fff;font-size:12px}.guide-button.secondary span{background:#e7edf5;color:#315373}.guide-dialog{width:min(570px,calc(100% - 24px));max-width:570px;padding:30px;text-align:left}.guide-dialog::backdrop{background:#04142aa8;backdrop-filter:blur(3px)}.guide-dialog h2{margin:6px 0 7px;text-align:center}.guide-dialog>p{text-align:center;margin:0 0 20px}.guide-dialog-icon{width:55px;height:55px;margin:0 auto 9px;border-radius:16px;display:grid;place-items:center;background:#eaf3ff;color:#0768df;font-size:30px;font-weight:900}.book-icon{background:linear-gradient(145deg,#eaf3ff,#d9e9ff)}.guide-kicker{font-size:11px!important;font-weight:900;letter-spacing:.12em;color:#0b6ce5!important;margin-bottom:0!important}.instruction-box{padding:15px 17px;border:1px solid #d9e4f2;border-radius:11px;background:#f7faff}.instruction-box strong{font-size:13px;color:#0a59bd}.instruction-box p{margin:6px 0 0;color:#34455e;line-height:1.5}.instruction-goals{margin:14px 0}.instruction-goal{display:flex;gap:10px;align-items:flex-start;padding:8px 2px;color:#40516a;font-size:13px}.instruction-goal span{flex:0 0 22px;height:22px;border-radius:50%;display:grid;place-items:center;background:#eaf3ff;color:#0768df;font-weight:900}.instruction-goal strong{display:block;color:#253650}.instruction-goal small{display:block;color:#748197;margin-top:2px}.guide-primary{display:block;width:100%;height:46px;margin-top:12px;border:0!important;border-radius:9px!important;background:#0868e9!important;color:#fff!important;font-weight:800!important}.how-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:20px 0}.how-grid div{position:relative;min-height:112px;padding:15px 13px 13px 48px;border:1px solid #dbe5f1;border-radius:11px;background:#fbfdff}.how-grid div>span{position:absolute;left:13px;top:14px;width:27px;height:27px;border-radius:50%;display:grid;place-items:center;background:#0868e9;color:#fff;font-weight:900;font-size:13px}.how-grid strong,.how-grid small{display:block}.how-grid strong{font-size:13px;color:#223550}.how-grid small{font-size:12px;color:#708096;line-height:1.4;margin-top:5px}.guide-footnote{font-size:11px!important;color:#7b8798!important;margin:11px auto 0!important;max-width:390px}.guide-close{top:10px!important}
@media(max-width:640px){.guide-actions{display:grid;grid-template-columns:1fr 1fr}.guide-button{padding:0 8px;font-size:12px}.guide-dialog{padding:25px 17px}.how-grid{grid-template-columns:1fr}.how-grid div{min-height:90px}}
.profile-dialog{width:min(430px,calc(100% - 24px))}.profile-dialog-avatar{width:44px;height:44px;font-size:14px}.profile-pill{cursor:pointer}.profile-pill:hover{border-color:#55779e;background:#1d416d}.profile-pill:focus-visible{outline:3px solid #67b3ff;outline-offset:2px}
.units-home{max-width:1280px;padding-top:54px}.units-hero{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:28px}.units-eyebrow{font-size:12px;font-weight:900;letter-spacing:.13em;color:var(--blue)}.units-hero h1{font-size:42px;letter-spacing:-.04em;margin:8px 0}.units-hero p{margin:0;color:var(--muted)}.units-summary{padding:16px 20px;border:1px solid var(--line);border-radius:14px;background:#fff;text-align:right}.units-summary strong,.units-summary span{display:block}.units-summary strong{font-size:22px;color:var(--blue)}.units-summary span{font-size:12px;color:var(--muted);margin-top:3px}.continue-card{display:flex;align-items:center;justify-content:space-between;gap:25px;padding:27px 30px;border-radius:18px;background:linear-gradient(120deg,#075fcf,#123a82);color:#fff;box-shadow:0 16px 34px #0b4fae2b;margin-bottom:25px}.continue-card span{font-size:11px;font-weight:900;letter-spacing:.12em;color:#a9d6ff}.continue-card h2{font-size:25px;margin:7px 0}.continue-card p{margin:0;color:#d5e8ff}.continue-card button,.unit-select-card button{border:0;border-radius:10px;background:#fff;color:#075fcf;height:45px;padding:0 19px;font-weight:900;cursor:pointer;white-space:nowrap}.unit-catalog{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.unit-select-card{background:#fff;border:1px solid var(--line);border-radius:17px;padding:24px;box-shadow:0 8px 26px #18355e0d}.unit-select-card.featured{border-color:#8fbfff;box-shadow:0 10px 28px #0868e918}.unit-card-top{display:flex;align-items:center;justify-content:space-between}.unit-number{width:42px;height:42px;border-radius:12px;background:#eaf3ff;color:#0768df;display:grid;place-items:center;font-weight:900}.unit-state{border-radius:20px;padding:6px 10px;font-size:11px;font-weight:900}.unit-state.available{background:#eef8f4;color:#14805c}.unit-state.new{background:#eaf3ff;color:#075fcf}.unit-select-card h2{font-size:22px;margin:17px 0 8px}.unit-select-card>p{color:var(--muted);line-height:1.55;min-height:74px}.unit-progress-line{display:flex;justify-content:space-between;color:#65728a;font-size:12px;margin-top:20px}.unit-progress-line strong{color:var(--blue)}.unit-progress-bar{height:7px;border-radius:20px;background:#e2e9f2;overflow:hidden;margin:8px 0 18px}.unit-progress-bar span{display:block;height:100%;width:0;background:linear-gradient(90deg,#0870ee,#21bad8);transition:width .3s}.unit-select-card button{background:#0868e9;color:#fff;width:100%}.back-units{border:0;background:transparent;color:#0b66d4;font-weight:800;cursor:pointer;margin:0 0 17px;padding:4px 0}.u2-topology{padding-left:2%;padding-right:2%;overflow-x:auto;justify-content:flex-start}.u2-topology .node{min-width:82px}.u2-topology .link{min-width:55px}.u2-topology .trunk-link{min-width:105px}.u2-topology .trunk-link i{height:5px;background:linear-gradient(90deg,#0868e9,#22c4dd)}.coming-lab{display:grid;grid-template-columns:28px 1fr;gap:8px;align-items:center;padding:9px;color:#8995a7;opacity:.78}.coming-lab b{width:24px;height:24px;border-radius:50%;border:1px solid #d3dce7;display:grid;place-items:center;font-size:11px}.coming-lab span{font-size:12px;font-weight:700}.coming-lab small{display:block;font-size:10px;margin-top:2px}.u2-tabs button,.u3-tabs button{padding-left:7px!important;padding-right:7px!important}
.u3-topology{min-height:215px;display:grid;grid-template-columns:100px minmax(75px,1fr) 110px minmax(105px,1fr) 110px;grid-template-rows:130px 74px;align-items:center;padding:14px 6%;overflow-x:auto}.u3-pc1{grid-column:1;grid-row:1}.u3-link-pc1{grid-column:2;grid-row:1}.u3-switch{grid-column:3;grid-row:1}.u3-trunk{grid-column:4;grid-row:1}.u3-router{grid-column:5;grid-row:1}.u3-pc2{grid-column:3;grid-row:2}.u3-link{height:45px;position:relative}.u3-link i{position:absolute;left:0;right:0;top:28px;height:3px;background:#78a6d8}.u3-link i:after,.u3-link i:before{content:"";position:absolute;top:-3px;width:9px;height:9px;border-radius:50%;background:var(--green)}.u3-link i:before{left:0}.u3-link i:after{right:0}.u3-link span,.u3-branch span{position:absolute;width:100%;text-align:center;font-size:12px;color:var(--muted);font-weight:700}.u3-trunk i{height:5px;background:linear-gradient(90deg,#0868e9,#22c4dd)}.u3-branch{grid-column:3;grid-row:1/3;align-self:end;justify-self:center;width:85px;height:82px;position:relative;pointer-events:none}.u3-branch i{position:absolute;left:41px;top:14px;width:3px;height:43px;background:#78a6d8}.u3-branch i:before,.u3-branch i:after{content:"";position:absolute;left:-3px;width:9px;height:9px;border-radius:50%;background:var(--green)}.u3-branch i:before{top:0}.u3-branch i:after{bottom:0}.u3-branch span{top:23px;left:48px;text-align:left}.router-icon{width:62px;height:45px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(145deg,#12a4cc,#0868e9);box-shadow:0 8px 20px #075fc63d}.router-icon b{color:#fff;font-size:24px;line-height:1}
@media(max-width:1050px){.unit-catalog{grid-template-columns:1fr 1fr}.unit-select-card>p{min-height:50px}}@media(max-width:900px){.unit-catalog{grid-template-columns:1fr}.units-home{padding-top:32px}.u2-topology{min-width:700px}.u3-topology{min-width:680px}.topology-card{overflow-x:auto}}
@media(max-width:640px){.units-hero{display:block}.units-summary{margin-top:20px;text-align:left}.units-hero h1{font-size:34px}.continue-card{display:block;padding:23px}.continue-card button{width:100%;margin-top:20px}.unit-select-card{padding:20px}.u2-tabs,.u3-tabs{display:grid!important;grid-template-columns:1fr 1fr}.u2-topology{min-width:650px}.u3-topology{min-width:640px}}
.secondary-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:20px;align-items:start}.secondary-grid .card{height:100%}.secondary-grid .commands-card{padding-bottom:14px}.secondary-grid .leaderboard{max-height:260px;overflow:auto}
.help-tag{font-size:10px;font-weight:800;color:#1769c9;background:#edf5ff;border-radius:20px;padding:5px 8px}.help-explainer{margin:12px 18px 4px!important;padding:9px 10px;border-left:3px solid #2d7fe8;background:#f3f7fd;border-radius:0 7px 7px 0;color:#50637d!important;font-size:11px!important;line-height:1.45!important}
.validate:disabled{background:#dbe3ed;color:#728198;box-shadow:none;cursor:not-allowed}.validate.ready{background:#087a5b;box-shadow:0 7px 18px #087a5b35;animation:readyPulse .8s ease-out 1}.validate.ready:hover{background:#07694f}.lab-ready-line{color:#69e7c0;font-weight:700}@keyframes readyPulse{0%{transform:scale(1)}45%{transform:scale(1.025);box-shadow:0 0 0 8px #18b67b24}100%{transform:scale(1)}}
.save-status{font-size:10px;color:#8fa7c2;border-left:1px solid #31445c;padding-left:9px}.save-status.saving{color:#ffd477}.save-status.saved{color:#69e7c0}.save-status.error{color:#ff9c92}
@media(max-width:900px){.secondary-grid{grid-template-columns:1fr 1fr}.secondary-grid .leaderboard-card{grid-column:1/-1}}
@media(max-width:640px){.secondary-grid{grid-template-columns:1fr;gap:13px;margin-top:13px}.secondary-grid .leaderboard-card{grid-column:auto}}
@media(max-width:640px){.profile-copy small{display:none}.profile-pill{padding:3px 4px 3px 8px;gap:6px}.profile-copy strong{font-size:12px}}
.units-hero{gap:24px}.units-summary-grid{display:grid;grid-template-columns:repeat(3,minmax(145px,1fr));gap:10px}.units-summary-grid .units-summary{padding:14px 17px;text-align:left}.units-summary-grid .units-summary strong{font-size:20px}.home-progress-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;margin-top:24px}.home-progress-grid .card{height:100%}.home-card-copy{margin:14px 18px 4px!important;color:#66758b!important;font-size:13px!important}.home-progress-grid .leaderboard{max-height:320px;overflow:auto}.unit-badge-list{grid-template-columns:1fr}.unit-badge{min-height:74px}.unit-badge em{display:block;margin-top:5px;font-size:10px;font-style:normal;font-weight:800;color:#16805d}.unit-badge.locked{filter:none;opacity:.58;background:#f5f7fa;border-color:#d9e0e9}.unit-badge.locked em{color:#7a8799}.secondary-grid.commands-only{grid-template-columns:minmax(0,1fr)}
.course-modules{display:grid;gap:26px}.course-module h2{font-size:19px;margin:0 0 5px}.course-module>p{font-size:13px;color:var(--muted);margin:0 0 15px}.course-module .unit-catalog{margin:0}
.course-picker:not([hidden]){display:flex;flex-wrap:wrap;gap:10px;margin:0 0 20px}.course-picker button{border:1px solid var(--line);background:#fff;color:#344866;border-radius:10px;padding:11px 15px;font:inherit;font-weight:800;cursor:pointer}.course-picker button[aria-current="true"]{border-color:#0868e9;background:#eaf3ff;color:#075fcf}
.route-stage{border:1px solid var(--line);border-radius:18px;background:#fff;padding:24px;box-shadow:0 8px 26px #18355e0d}.route-stage.current{border-color:#8fbfff;box-shadow:0 10px 28px #0868e918}.route-stage+.route-stage{margin-top:18px}.route-stage-heading{display:flex;justify-content:space-between;gap:24px}.route-stage-heading>div>span{font-size:11px;font-weight:900;letter-spacing:.1em;color:#0768df}.route-stage-heading h2{font-size:24px;margin:7px 0}.route-stage-heading p{margin:0;color:var(--muted);line-height:1.5}.route-stage-progress{min-width:175px;text-align:right}.route-stage-progress strong,.route-stage-progress span,.route-stage-progress small{display:block}.route-stage-progress strong{font-size:23px;color:#0868e9}.route-stage-progress span{font-size:11px;font-weight:800;color:#536178}.route-stage-progress small{margin-top:5px;font-size:10px;color:#7c8aa0}.route-stage-bar{margin:19px 0}.route-lab-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.route-lab-card{border:1px solid #d9e4f0;border-radius:13px;padding:17px;background:#fbfdff}.route-lab-top{display:flex;justify-content:space-between;align-items:center}.route-lab-top span{font-size:11px;font-weight:900;letter-spacing:.08em;color:#075fcf}.route-lab-top em{font-size:10px;font-style:normal;font-weight:800;color:#16805d;background:#eef8f4;border-radius:20px;padding:5px 7px}.route-lab-card h3{font-size:16px;margin:13px 0 6px}.route-lab-card p{margin:0;color:#68778c;font-size:12px;line-height:1.45;min-height:54px}.route-practice-progress{display:flex;justify-content:space-between;margin-top:16px;font-size:11px;color:#65728a}.route-practice-progress strong{color:#0868e9}.route-lab-card .unit-progress-bar{margin:7px 0 14px}.route-lab-card button{width:100%;height:40px;border:0;border-radius:9px;background:#0868e9;color:#fff;font-weight:900;cursor:pointer}.route-upcoming{border:1px dashed #cbd8e6;border-radius:13px;padding:17px;background:#f8fafc;color:#68778c}.route-upcoming span,.route-upcoming strong{display:block}.route-upcoming span{font-size:10px;font-weight:900;letter-spacing:.09em;color:#75849a;text-transform:uppercase}.route-upcoming strong{margin:7px 0;font-size:14px;color:#40516a}.route-upcoming p{margin:0;font-size:12px;line-height:1.5}
@media(max-width:900px){.units-hero{align-items:flex-start;flex-direction:column}.units-summary-grid{width:100%}.home-progress-grid{grid-template-columns:1fr}}
@media(max-width:900px){.route-lab-grid{grid-template-columns:1fr 1fr}}@media(max-width:640px){.units-summary-grid{grid-template-columns:1fr}.units-summary-grid .units-summary{margin-top:0}.home-progress-grid{gap:13px;margin-top:16px}.route-stage{padding:18px}.route-stage-heading{display:block}.route-stage-progress{text-align:left;margin-top:15px}.route-lab-grid{grid-template-columns:1fr}}
.lab-item:disabled{cursor:not-allowed;opacity:.52;filter:grayscale(.25)}.lab-item:disabled:hover{background:transparent}