:root{--green:#214d43;--ink:#21352d;--muted:#66776c;--line:#dbe3d9;--cream:#f6f7f1;--paper:#fff;--rose:#a64c57;--serif:Georgia,'Times New Roman',serif;--sans:Arial,Helvetica,sans-serif}
*{box-sizing:border-box}body{margin:0;color:var(--ink);background:#f7f8f4;font:16px/1.55 var(--sans)}button,textarea,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}a{color:var(--green)}h1,h2,h3,p{margin-top:0}h1,h2{font-family:var(--serif);line-height:1.16;font-weight:500}h1{font-size:clamp(2.4rem,5vw,4.5rem)}h2{font-size:clamp(1.6rem,3vw,2.7rem)}h3{font-size:1.05rem}.topbar{height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(20px,4vw,64px);border-bottom:1px solid var(--line);background:#fff;gap:16px}.brand{text-decoration:none;font-weight:700;letter-spacing:-.03em;font-size:20px}.brand-mark{color:var(--rose);font-size:30px;vertical-align:middle}.topbar nav{display:flex;align-items:center;gap:22px}.topbar nav button{border:0;background:none;color:var(--green)}.topbar nav a{text-decoration:none}.container{max-width:1180px;margin:auto;padding:clamp(24px,4vw,56px)}.eyebrow{text-transform:uppercase;letter-spacing:.13em;color:#738879;font-weight:700;font-size:.72rem}.lead{font-size:1.2rem;max-width:650px;color:#4e6457}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:8px;padding:12px 20px;border:1px solid var(--green);background:var(--green);color:white;font-weight:700;text-decoration:none;min-height:44px}.button.secondary{background:white;color:var(--green)}.button.ghost{border-color:var(--line);background:transparent;color:var(--green)}.button:hover:not(:disabled){filter:brightness(.94)}.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:35px;align-items:center;min-height:430px}.hero-paper{max-width:350px;min-height:420px;padding:35px;box-shadow:14px 18px 0 #e2e9dd,0 10px 35px #233a261b;background:#fff;border:1px solid #e5e5dd;transform:rotate(2deg);margin:auto}.hero-paper h2{margin:55px 0 24px}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:30px 0}.step,.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px}.step small{color:var(--rose);font-weight:700}.step p{color:var(--muted);font-size:.92rem}.assignment-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;margin:25px 0}.case-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:30px}.facts{padding-left:23px}.facts li{margin-bottom:12px}.roles{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}.role-card{border:1px solid var(--line);border-radius:12px;text-align:left;background:#fff;padding:20px;color:var(--ink)}.role-card:hover,.role-card:focus-visible{border-color:var(--green);box-shadow:0 0 0 3px #214d4318}.paper-list{display:grid;gap:12px}.paper-tile{border:1px solid var(--line);border-radius:8px;padding:15px;background:white;text-align:left;color:var(--ink)}.paper-tile:before{content:'▤';display:inline-block;color:var(--green);margin-right:10px}.paper-view{background:#fff;box-shadow:0 12px 32px #1f38251a;width:min(100%,794px);min-height:980px;aspect-ratio:210/297;padding:clamp(26px,6vw,76px);margin:15px auto;border:1px solid #e5e8df;color:#222;font:16px/1.7 var(--serif);white-space:pre-wrap;overflow-wrap:anywhere}.paper-view h2{text-align:center;margin:30px 0;font-size:1.55rem}.paper-view small{display:block;text-align:center;font:12px var(--sans);letter-spacing:.12em;text-transform:uppercase;color:#53655a}.back{display:inline-block;margin-bottom:20px}.workspace{display:grid;grid-template-columns:248px minmax(0,1fr) 320px;min-height:calc(100vh - 72px)}.side{padding:28px 20px;background:#f0f3ed;border-right:1px solid var(--line)}.side h2{font-size:1.5rem}.side nav{display:grid;gap:8px;margin:24px 0}.side nav button{background:none;border:0;border-radius:7px;padding:10px;text-align:left;color:var(--ink)}.side nav button.active{background:#dce9df;color:var(--green);font-weight:700}.phases{padding-left:23px;font-size:.87rem;color:#718274}.phases li{margin:13px 0}.phases li.current{color:var(--green);font-weight:700}.room{display:flex;flex-direction:column;min-width:0;max-height:calc(100vh - 72px)}.room-header{padding:23px 28px;border-bottom:1px solid var(--line);background:#fff}.room-header h1{font-size:2rem;margin:5px 0}.turn{display:inline-block;border-radius:30px;padding:5px 12px;background:#e5eee7;color:var(--green);font-size:.81rem;font-weight:700}.transcript{padding:25px clamp(16px,3vw,45px);overflow:auto;flex:1}.message{display:flex;gap:12px;margin-bottom:22px;max-width:720px}.message.student{margin-left:auto;flex-direction:row-reverse}.avatar{flex:none;width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:#e1e9d8;color:#526a41;font-weight:700}.message.opponent .avatar{background:#f4e7db;color:#9c6544}.message.student .avatar{background:var(--green);color:white}.message main{min-width:0;flex:1}.message header{font-size:.82rem;margin-bottom:5px;color:#52655a}.message time{float:right;color:#84938a;font-size:.72rem}.bubble{padding:16px;border:1px solid #dce5d7;border-left:3px solid #9caf89;border-radius:0 9px 9px 9px;background:#f0f4e9;white-space:pre-wrap;overflow-wrap:anywhere}.message.opponent .bubble{background:white;border-color:#eadfd3;border-left:3px solid #c79269}.message.student .bubble{background:#e4eee7;border-color:#cddfd3;border-left:3px solid var(--green)}.message.system .bubble{background:#f9f9f5;border:1px dashed #dce1d5}.composer{border-top:1px solid var(--line);padding:18px 28px;background:#fff}.composer label{display:block;font-weight:700;font-size:.84rem;margin-bottom:7px}.composer textarea{display:block;width:100%;resize:vertical;min-height:90px;max-height:220px;padding:14px;border:1px solid #9db7a5;border-radius:8px;outline:none}.composer textarea:focus{box-shadow:0 0 0 3px #214d4322;border-color:var(--green)}.composer-bottom{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:10px}.composer-bottom small{color:var(--muted)}.context{border-left:1px solid var(--line);background:#fafbf8;padding:25px 18px;overflow:auto;max-height:calc(100vh - 72px)}.context h2{font-size:1.6rem}.context button{width:100%;margin-bottom:9px}.notice{background:#f6f4e9;border:1px solid #e5ddbb;padding:12px;border-radius:8px;font-size:.9rem}.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#1d3930;color:white;padding:12px 20px;border-radius:8px;box-shadow:0 10px 25px #0002;max-width:90vw;z-index:10}.loading{padding:55px;text-align:center}.modal{position:fixed;inset:0;background:#17291d99;z-index:20;display:flex;align-items:center;justify-content:center;padding:20px}.modal-inner{background:#f6f8f4;max-width:1000px;width:100%;max-height:94vh;overflow:auto;padding:24px;border-radius:12px}.modal-header{display:flex;justify-content:space-between;align-items:center}.modal-header button{border:0;background:transparent;font-size:1.8rem}.doc-fields{display:grid;gap:13px}.doc-fields label{display:grid;gap:6px}.doc-fields input,.doc-fields textarea{border:1px solid #abbcb0;border-radius:6px;padding:10px;background:#fff}.doc-fields textarea{min-height:100px}.doc-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.muted{color:var(--muted)}
[hidden]{display:none!important}
@media(max-width:1050px){.workspace{grid-template-columns:200px minmax(0,1fr)}.context{grid-column:1/-1;max-height:none;border-left:0;border-top:1px solid var(--line)}.room{max-height:75vh}}
@media(max-width:720px){.topbar{padding:0 15px}.brand{font-size:16px}.topbar nav{gap:10px;font-size:.8rem}.hero,.case-layout,.workspace{display:block}.hero-paper{display:none}.steps{grid-template-columns:1fr 1fr}.roles{grid-template-columns:1fr}.side{padding:15px;border-right:0}.side nav{display:flex;flex-wrap:wrap}.phases{display:none}.room{max-height:75vh}.room-header{padding:15px}.room-header h1{font-size:1.5rem}.composer{padding:14px}.paper-view{min-height:0}.context{padding:18px}}
@media print{.topbar,.back,.modal-header,.doc-actions{display:none!important}.paper-view{box-shadow:none;border:0;margin:0;width:210mm;min-height:297mm;padding:22mm}}
dialog[data-document-dialog]{border:1px solid var(--line);border-radius:12px;box-shadow:0 20px 70px #122a1d55;width:min(900px,94vw);max-height:92vh;overflow:auto;padding:25px;color:var(--ink)}dialog[data-document-dialog]::backdrop{background:#17291d99}dialog[data-document-dialog] h1{font-size:2rem}dialog[data-document-dialog] label{display:block;margin-top:12px;font-weight:700}dialog[data-document-dialog] select,dialog[data-document-dialog] input,dialog[data-document-dialog] textarea{max-width:100%;border:1px solid #a9bcac;border-radius:6px;padding:9px;background:white}dialog[data-document-dialog] form{display:grid;gap:10px;margin:15px 0}dialog[data-document-dialog] button{border:1px solid var(--green);border-radius:7px;padding:8px 13px;background:var(--green);color:white;margin:5px 5px 5px 0}dialog[data-document-dialog] section[data-document-preview]{background:white;border:1px solid var(--line);padding:24px;white-space:pre-wrap;max-width:794px;min-height:350px;margin:14px auto}
dialog[data-document-dialog] section[data-document-preview]:empty{display:none}dialog[data-document-dialog] section[data-document-preview]:not(:empty){min-height:950px;aspect-ratio:210/297;padding:clamp(26px,6vw,72px);box-shadow:0 12px 32px #1f38251a}dialog[data-document-dialog] section[data-document-preview] pre{white-space:pre-wrap;overflow-wrap:anywhere;font:16px/1.7 var(--serif)}
.participants{display:flex;flex-wrap:wrap;gap:10px 22px;padding:10px 28px;background:#f9fbf7;border-bottom:1px solid var(--line);font-size:.78rem;color:#52685b}.participants strong{color:var(--green)}.waiting{color:#66806e;background:#eef4ea;border:1px solid var(--line);border-radius:8px;padding:14px 18px;max-width:520px}
.more-materials{border:1px solid var(--line);border-radius:8px;padding:12px;background:white}.more-materials summary{cursor:pointer;color:var(--green);font-weight:700}.more-materials .paper-tile:first-of-type{margin-top:14px}
/* Case card captions and the minimal runtime-v3 bridge (browser test 2026-10-14, F5/F7). */
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin:-4px 0 12px}.tag{display:inline-block;border-radius:30px;padding:3px 11px;font-size:.76rem;font-weight:700;border:1px solid var(--line);background:#f2f5ef;color:var(--muted)}.tag.mark-beta{background:#f6e7e9;border-color:#e3c3c8;color:var(--rose)}.tag.mark-legacy{background:#eef0ea}
.field-error{margin:10px 0 0;font-weight:700;color:var(--rose)}.finished-attempts{display:grid;gap:10px;margin:12px 0}.finished-attempt{justify-content:flex-start;text-align:left;width:100%}
/* The logout page in the look of the workspace (BETA-E2E-25). */
.auth-page{max-width:520px;margin:clamp(24px,8vh,80px) auto;padding:0 16px}.auth-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:clamp(20px,5vw,36px)}.auth-card h1{font-size:2rem}.auth-actions{display:grid;gap:10px;margin-top:20px}
/* The login form in the same look (BETA-E2E-86): one card, fields of the workspace, no second stylesheet. */
.auth-form{display:grid;gap:14px;margin-top:18px}.auth-field{display:grid;gap:6px;font-weight:700}.auth-field input{width:100%;border:1px solid var(--line);border-radius:8px;padding:10px 12px;background:#fff;color:var(--ink);font-weight:400}.auth-field input:focus-visible{outline:2px solid var(--green);outline-offset:1px}.auth-hint{color:var(--muted);margin-bottom:0}
.beta-panel{padding:12px 28px;border-bottom:1px solid var(--line);background:#fffdf7}.beta-panel .eyebrow{margin-bottom:8px}.beta-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.beta-actions .muted{margin:0}.beta-result{margin:8px 0 0;font-size:.9rem;color:var(--green)}.beta-result.rejected{color:var(--rose)}.beta-result:empty{display:none}
.reply-lock{background:#f6f4e9;border:1px solid #e5ddbb;border-radius:8px;padding:9px 12px;font-size:.88rem;margin:0 0 8px}
.beta-expectations ul{padding-left:20px;font-size:.9rem}.beta-expectations li{margin-bottom:8px}.beta-expectations li small{color:var(--muted)}.beta-expectations li.missed small{color:var(--rose)}.beta-expectations li.done{color:var(--muted)}
.docket-entry small{color:var(--muted);font-size:.78rem}.docket-entry strong{font-weight:600}
.document-sheet{font:16px/1.7 var(--serif);color:#222}.document-sheet h2{text-align:center;margin:20px 0 26px;font-size:1.45rem}.document-sheet h3{font:700 .8rem var(--sans);letter-spacing:.06em;text-transform:uppercase;color:#53655a;margin:22px 0 6px}.document-sheet p,.document-sheet-text{white-space:pre-wrap;overflow-wrap:anywhere;margin:0}.document-sheet-caption{font:700 .8rem var(--sans);color:var(--muted);text-transform:uppercase;letter-spacing:.08em}