:root{--ink:#14233a;--paper:#fffdf8;--ground:#efe8dc;--accent:#c95032;--line:#cfc4b5;--soft:#e4dacb;--ok:#216b57;--serif:Georgia,'Times New Roman',serif;--sans:Arial,sans-serif}
*{box-sizing:border-box}
body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--sans);line-height:1.5}
.topbar{min-height:66px;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1180px)/2))}
.brand{font-weight:800;letter-spacing:.08em}
.brand span{display:inline-grid;place-items:center;width:34px;height:34px;background:var(--accent);color:#fff;margin-right:9px}
.brand small{font-weight:400;letter-spacing:.03em;opacity:.65;margin-left:8px}
.topbar nav{display:flex;gap:20px;align-items:center}
.topbar a,.text-button{color:#fff;text-decoration:none;background:none;border:0;font:inherit;cursor:pointer}
.page{max-width:1180px;margin:auto;padding:48px 24px 90px}
.intro{max-width:770px;margin-bottom:34px}
.kicker,.section-number{color:var(--accent);font-size:12px;font-weight:800;letter-spacing:.15em;text-transform:uppercase}
.intro h1,.result-head h2,.lesson-test h2{font:700 clamp(34px,5vw,62px)/1.02 var(--serif);margin:10px 0 14px}
.intro p{font-size:18px}
.workspace-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(280px,1fr);gap:22px;align-items:start}
.paper{background:var(--paper);border:1px solid var(--line);box-shadow:7px 7px 0 rgba(20,35,58,.12);padding:32px}
.side-paper{position:sticky;top:20px}
.side-paper h2{font:700 30px var(--serif)}
.side-paper li{margin:12px 0}
.muted{color:#6d6a65}
.status{border-left:4px solid var(--ok);padding:12px 14px;background:#edf4f0;margin-top:28px}
.status.error{border-color:var(--accent);background:#f8ebe7}
.status.development-progress{border:1px solid var(--soft);border-left:4px solid var(--accent);padding:16px;background:#fff8ef}
.status.development-progress.complete{border-left-color:var(--ok);background:#edf4f0}
.development-progress .progress-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.development-progress .progress-head span{font-size:12px;color:#6d6a65}
.development-progress .progress-track{height:7px;background:var(--soft);overflow:hidden;margin:13px 0}
.development-progress .progress-track span{display:block;width:38%;height:100%;background:var(--accent);animation:progress-move 1.35s ease-in-out infinite}
.development-progress.complete .progress-track span{width:100%;background:var(--ok);animation:none}
.development-progress.error .progress-track span{width:100%;animation:none}
.development-progress .progress-steps{margin:0;padding-left:22px;font-size:13px;color:#807b74}
.development-progress .progress-steps li{margin:7px 0}
.development-progress .progress-steps li.done{color:var(--ok)}
.development-progress .progress-steps li.active{color:var(--ink);font-weight:700}
.development-progress .progress-steps li.done::marker{content:'✓  '}
.development-progress .progress-note{font-size:12px;line-height:1.45;margin:13px 0 5px;color:#595f68}
.development-progress .progress-checked{display:block;color:#8a857e;font-size:11px}
.field-grid{display:grid;gap:16px}
.field-grid.two{grid-template-columns:1fr 1fr}
label{display:block;font-weight:700;margin:20px 0 0}
input,textarea,select{width:100%;margin-top:7px;border:1px solid #a99e90;border-radius:0;background:#fff;padding:13px 14px;font:16px/1.4 var(--sans);color:var(--ink)}
textarea{min-height:88px;resize:vertical}
input:focus,textarea:focus,select:focus{outline:3px solid rgba(201,80,50,.16);border-color:var(--accent)}
details{border-top:1px solid var(--soft);margin-top:26px;padding-top:20px}
summary{font-weight:800;cursor:pointer}
summary span{float:right;color:#777;font-weight:400}
.actions{display:flex;justify-content:flex-end;gap:12px;margin-top:28px;flex-wrap:wrap}
button{border:1px solid var(--ink);border-radius:0;background:var(--ink);color:#fff;padding:13px 18px;font-weight:800;cursor:pointer}
button:hover{transform:translate(-1px,-1px);box-shadow:3px 3px 0 rgba(20,35,58,.22)}
button:disabled{opacity:.55;cursor:wait}
.secondary{background:transparent;color:var(--ink)}
.result-section{margin-top:70px}
.result-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:20px}
.result-head h2{font-size:44px}
.outline-paper{padding:36px}
.outline-paper>label:first-child input{font:700 30px/1.2 var(--serif)}
.module{border-top:3px solid var(--ink);margin-top:34px;padding-top:18px}
.module-title{font:700 25px var(--serif);margin:0 0 16px}
.lesson{display:grid;grid-template-columns:42px 1fr;gap:12px;padding:18px 0;border-top:1px solid var(--soft)}
.lesson-index{color:var(--accent);font-weight:800}
.lesson input{font-weight:800;margin-top:0;white-space:normal;overflow:visible;text-overflow:clip}
.lesson textarea{min-height:64px}
.lesson-meta{font-size:13px;color:#6d6a65;margin-top:7px}
.revise-paper,.lesson-test{margin-top:22px}
.lesson-test h2{font-size:36px;max-width:720px}
.lesson-output{border-top:3px solid var(--accent);margin-top:28px;padding-top:24px;white-space:pre-wrap;font-family:var(--serif);font-size:18px}
.hidden{display:none!important}
dialog{width:min(920px,calc(100vw - 30px));max-height:88vh;border:1px solid var(--ink);border-radius:0;padding:26px;background:var(--paper);color:var(--ink)}
dialog::backdrop{background:rgba(20,35,58,.72)}
.dialog-head{display:flex;justify-content:space-between;align-items:center}
.dialog-head button{padding:4px 12px;font-size:24px}
pre{white-space:pre-wrap;background:#eee7db;border-left:4px solid var(--accent);padding:18px;max-height:300px;overflow:auto}
.project-row{border-top:1px solid var(--soft);padding:16px 0;display:flex;justify-content:space-between;gap:15px;align-items:center}
.project-row b{overflow-wrap:anywhere}
.project-row button{padding:8px 12px}
.login-shell{min-height:100vh;display:grid;place-items:center;padding:24px}
.login-panel{width:min(580px,100%);background:var(--paper);border:1px solid var(--ink);box-shadow:10px 10px 0 var(--ink);padding:44px}
.login-panel h1{font:700 48px/1.05 var(--serif)}
.login-form button{width:100%;margin-top:20px}
.notice,.error{padding:15px;border-left:4px solid var(--accent);background:#f8ebe7}
.error{color:#9d2f20}
.progress-panel{margin-top:14px;border:1px solid var(--soft);padding:16px;background:#fff}
.progress-head{display:flex;align-items:center;justify-content:space-between;gap:16px}
.progress-head span{font-variant-numeric:tabular-nums;color:#6d6a65}
.progress-track{height:7px;background:var(--soft);overflow:hidden;margin:12px 0 14px}
.progress-track span{display:block;width:38%;height:100%;background:var(--accent);animation:progress-move 1.35s ease-in-out infinite}
.progress-panel.complete .progress-track span{width:100%;background:var(--ok);animation:none}
.progress-panel.failed .progress-track span{width:100%;background:var(--accent);animation:none}
.progress-steps{margin:0;padding-left:22px;font-size:14px;color:#777}
.progress-steps li{margin:6px 0}
.progress-steps li.done{color:var(--ok)}
.progress-steps li.active{color:var(--ink);font-weight:700}
.progress-steps li.done::marker{content:'✓  '}
.progress-steps li.active::marker{color:var(--accent)}
@keyframes progress-move{0%{transform:translateX(-105%)}50%{transform:translateX(82%)}100%{transform:translateX(265%)}}
.lesson-points{margin:10px 0 0;padding-left:20px;color:#474f5d}
.lesson-points li{margin:5px 0}
.lesson-footer{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-top:12px;padding-top:10px;border-top:1px dashed var(--soft);font-size:14px}
.lesson-practice{margin:0;color:#474f5d}
.lesson-pages{white-space:nowrap;color:#6d6a65;background:#eee7db;padding:3px 8px}
.lesson-meta{display:none}
.model-document{max-width:980px;margin:0 auto;padding:52px 62px;font-size:18px;line-height:1.7;color:var(--ink)}
.model-document h2{font:700 40px/1.12 var(--serif);margin:0 0 24px}
.model-document h3{font:700 29px/1.2 var(--serif);margin:38px 0 14px;padding-top:20px;border-top:2px solid var(--ink)}
.model-document h4{font:700 22px/1.3 var(--serif);margin:28px 0 10px}
.model-document p{margin:0 0 16px}
.model-document ul,.model-document ol{margin:8px 0 22px;padding-left:28px}
.model-document li{margin:8px 0;padding-left:4px}
.model-document strong{color:#101b30}
@media(max-width:800px){.workspace-grid{grid-template-columns:1fr}
.side-paper{position:static}
.field-grid.two{grid-template-columns:1fr}
.page{padding:30px 16px}
.paper{padding:22px;box-shadow:4px 4px 0 rgba(20,35,58,.12)}
.topbar{padding:0 16px}
.brand small{display:none}
.intro h1{font-size:42px}
.result-head{align-items:start;gap:16px}
.lesson{grid-template-columns:30px 1fr}
.model-document{padding:28px 22px;font-size:17px}
.model-document h2{font-size:32px}
.model-document h3{font-size:25px}
}

.chat-paper{min-height:590px;display:flex;flex-direction:column}
.messages{flex:1;max-height:560px;overflow:auto;margin:20px 0;padding-right:8px}
.message{max-width:88%;margin:14px 0;padding:14px 16px;border:1px solid var(--soft);background:#fff}
.message.user{margin-left:auto;background:#eee7db}
.message.assistant{border-left:4px solid var(--accent)}
.message-role{display:block;color:var(--accent);font-size:11px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
.message p{margin:6px 0 0;white-space:pre-wrap}
.chat-form{border-top:1px solid var(--soft);padding-top:18px}
.chat-form.locked{display:none}
.chat-form textarea{min-height:110px}
.confirmation-panel{margin-top:18px;padding:18px;border:2px solid var(--ok);background:#edf4f0;display:flex;align-items:center;justify-content:space-between;gap:18px;box-shadow:4px 4px 0 rgba(33,107,87,.18)}
.confirmation-panel b{font-size:18px}.confirmation-panel p{margin:4px 0 0;color:#42574f}
.primary-cta{background:var(--accent);border:2px solid var(--ink);box-shadow:4px 4px 0 var(--ink);font-size:15px;padding:13px 24px}
.primary-cta:hover{box-shadow:6px 6px 0 var(--ink)}
.mobile-develop{display:none;width:100%;margin-top:22px}
.readiness-summary{display:flex;align-items:baseline;gap:10px;margin:22px 0 12px;color:#6d6a65}
.readiness-value{font:700 42px/1 var(--serif);color:var(--ink)}
.readiness-track{height:10px;background:var(--soft);overflow:hidden;margin-bottom:18px}
.readiness-track span{display:block;height:100%;background:var(--ok);transition:width .35s ease}
.readiness-list{list-style:none;margin:0;padding:0}
.lesson-selects{display:grid;gap:12px;margin:0 0 20px}.lesson-selects label{display:grid;gap:5px;font-size:13px;font-weight:700}.lesson-selects select{width:100%;padding:9px;border:1px solid #c9c3b6;background:#fffdf8;color:#14213d;font:inherit}.lesson-frame{width:100%;height:900px;border:0;background:#f5f6fa}
.readiness-list li{display:grid;grid-template-columns:24px 1fr auto;align-items:center;gap:8px;padding:10px 0;border-top:1px solid var(--soft)}
.readiness-list small{color:#777;font-size:12px}
.readiness-list .ready .readiness-icon,.readiness-list .ready small{color:var(--ok)}
.readiness-list .pending{color:#777}.readiness-icon{font-weight:800;text-align:center}
.brief-row{padding:11px 0;border-bottom:1px solid var(--soft)}
.brief-row b{font-size:13px;color:var(--accent)}
.brief-row p{margin:3px 0 0}
.brief-list{margin:7px 0 0;padding-left:20px}.brief-list li{margin:5px 0}
.assumptions{margin-top:18px;padding:14px;background:#fff5df;border-left:4px solid #c89127}
.assumptions ul{margin:8px 0 0;padding-left:20px}
.wide{width:100%;margin-top:20px}
.button-row{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}
.blueprint-document{padding:42px}
.blueprint-overview{margin:26px 0;padding:22px;border-left:4px solid var(--accent);background:#f6f1e8}
.blueprint-overview p{margin:5px 0 18px}.blueprint-overview p:last-child{margin-bottom:0}
.module-number{margin:0 0 5px;color:var(--accent);font-size:12px;font-weight:800;letter-spacing:.12em}
.module-purpose{color:#59616d}.structure-lessons{padding-left:24px}.structure-lessons li{padding:10px 0 10px 6px;border-top:1px solid var(--soft)}.structure-lessons p{margin:4px 0 0;color:#59616d}
.blueprint-field{font-size:13px;color:#6d6a65}
.blueprint-field input,.blueprint-field textarea{color:var(--ink);font-weight:400}
.blueprint-document>.blueprint-field:first-child input{font:700 31px/1.2 var(--serif)}
.blueprint-list{margin:18px 0;padding:15px;background:#f6f1e8}
.blueprint-list .blueprint-field{margin-top:8px}
.module{position:relative;background:#fff}
.module>.blueprint-field:first-of-type input{font:700 25px/1.2 var(--serif)}
.lesson{display:block;margin:18px 0;padding:20px;border:1px solid var(--soft);background:#fffdf8}
.lesson .blueprint-field:first-of-type input{font-weight:800}
.entity-id{display:inline-block;background:var(--ink);color:#fff;padding:3px 8px;font:12px monospace;margin-bottom:6px}
.demo-grid{display:grid;gap:26px}
.model-document .lead{font:20px/1.6 var(--serif)}
.model-document a{color:#9d2f20;overflow-wrap:anywhere}
.jobs-panel{margin-top:34px}
.job-row{display:flex;justify-content:space-between;gap:18px;border-top:1px solid var(--soft);padding:15px 0}
.job-row>div{display:grid;gap:4px}
.job-status{display:inline-block;margin-left:10px;color:#6d6a65;font:12px monospace}
.job-status.completed{color:var(--ok)}
.job-status.failed,.job-status.incomplete,.job-status.submission_unknown{color:var(--accent)}
.job-row small{color:#6d6a65}
.small-button{padding:7px 10px;align-self:start}
.error-text{margin:4px 0;color:#9d2f20}
.project-row small{display:block;color:#6d6a65;margin-top:4px}
.empty{color:#6d6a65;text-align:center;margin:80px 20px}
@media(max-width:800px){.result-head{display:block}.button-row{justify-content:flex-start;margin-top:14px}.blueprint-document{padding:22px}.message{max-width:96%}.confirmation-panel{align-items:stretch;flex-direction:column}.confirmation-panel button{width:100%}.mobile-develop{display:block}}
.new-concept-lesson{max-width:920px}.lesson-toc{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 24px}.lesson-toc a{font-size:13px;color:#26384e;text-decoration:none;border-bottom:1px solid #9aa7b5}.lesson-section{scroll-margin-top:24px;margin:28px 0}.lesson-section h3{margin-bottom:12px}.lesson-section h4{margin:18px 0 6px}.lesson-section details{padding:10px 0;border-top:1px solid #d7dde4}.lesson-section summary{cursor:pointer;font-weight:600}