*{box-sizing:border-box} :root{--ink:#182b3a;--muted:#607281;--green:#126d5b;--line:#dce5e7;--bg:#f4f7f8;--nav:248px}body{margin:0;font:16px/1.6 system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--bg)}a{color:var(--green);text-decoration:none}a:hover{text-decoration:underline}button,input,select,textarea{font:inherit}button,.button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:10px 18px;border:1px solid transparent;border-radius:9px;background:var(--green);color:white;font-weight:650;cursor:pointer;gap:8px;text-decoration:none}button:hover,.button:hover{filter:brightness(.95);text-decoration:none}.secondary{background:white;border-color:var(--line);color:var(--ink)}.danger{background:#a32932;color:white}.link-button{background:none;color:var(--green);padding:4px 8px}.muted,small{color:var(--muted)}h1,h2,h3{line-height:1.25;letter-spacing:-.025em}h1{font-size:clamp(1.8rem,3vw,2.5rem)}h2{font-size:1.3rem}h3{font-size:1.08rem}.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.75rem;font-weight:750;color:var(--green)}.container{max-width:1180px;margin:auto;padding:28px}.public-header{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;padding:18px 5%;background:white;border-bottom:1px solid var(--line)}.brand{font-size:1.15rem;font-weight:800;color:var(--ink)}.brand b{display:inline-grid;place-items:center;background:var(--green);color:white;width:40px;height:40px;border-radius:12px;margin-right:10px}.public-header nav,.actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.hero{padding:64px 0;max-width:800px}.hero h1{font-size:clamp(2.3rem,6vw,4rem)}.card{background:white;border:1px solid var(--line);border-radius:15px;padding:24px;box-shadow:0 4px 16px #102d3b04;margin-bottom:22px;min-width:0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,245px),1fr));gap:20px}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin:24px 0}.stat{margin:0}.stat strong{display:block;font-size:1.8rem;margin-top:10px;overflow-wrap:anywhere}.badge{display:inline-block;padding:4px 10px;background:#e8f4ef;color:#13624f;border-radius:20px;font-size:.78rem;font-weight:650}.badge.neutral{background:#eef2f6;color:#526474}.alert{padding:14px 18px;border-radius:10px;background:#e8f4ef;margin:16px 0}.alert.error{background:#fff0ef;color:#942d2d}.empty{text-align:center;padding:35px 20px;border:1px dashed var(--line);border-radius:12px;color:var(--muted)}label{display:block;font-size:.9rem;font-weight:650;margin:16px 0 6px}input:not([type=checkbox]),select,textarea{width:100%;max-width:100%;padding:12px;border:1px solid #bcccd0;border-radius:8px;background:white;color:var(--ink);min-height:46px}input:focus,textarea:focus,select:focus,button:focus-visible,a:focus-visible{outline:3px solid #84cabb;outline-offset:2px}textarea{min-height:110px;resize:vertical}input[readonly]{background:var(--bg)}.check{display:flex;gap:8px;align-items:center;font-weight:400}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}.table-wrap{position:relative;overflow-x:auto;max-width:100%}table{border-collapse:collapse;width:100%;text-align:left;font-size:.9rem}th,td{padding:14px 12px;border-bottom:1px solid var(--line);vertical-align:top}th{font-size:.75rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}.pagination{display:flex;gap:12px;margin:20px 0}.page-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:22px}.page-heading h1{margin:6px 0}.footer{padding:30px;text-align:center;font-size:.85rem;color:var(--muted)}.stack>*+*{margin-top:12px}.password-wrap{display:flex;gap:8px}.password-wrap input{min-width:0}.password-wrap button{padding:8px 10px}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;white-space:nowrap;overflow:hidden;clip:rect(0,0,0,0)}[hidden]{display:none!important}.course-icon{width:52px;height:52px;border-radius:12px;background:#e8f4ef;display:grid;place-items:center;font-size:1.4rem;font-weight:800}.course-card{display:flex;flex-direction:column;gap:12px}.course-card .actions{margin-top:auto}.split{display:grid;grid-template-columns:1.5fr 1fr;gap:22px}.break{overflow-wrap:anywhere}.chat-list{height:380px;overflow-y:auto;padding:12px;background:var(--bg);border-radius:10px}.message{padding:12px;background:white;margin:10px 0;border:1px solid var(--line);border-radius:10px;overflow-wrap:anywhere;white-space:pre-wrap}.message small{display:block}.chat-compose{display:flex;gap:8px;margin-top:12px;align-items:end}.chat-compose label{flex:1}.chat-compose textarea{min-height:75px}.status-dot{display:inline-block;width:8px;height:8px;background:#1d9675;border-radius:50%;margin-right:6px}@media(max-width:800px){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}.split{grid-template-columns:1fr}.container{padding:20px}}@media(max-width:480px){.form-grid{grid-template-columns:1fr}.card{padding:18px}.stats{gap:10px}.stat strong{font-size:1.4rem}.public-header{padding:14px 18px}.hero{padding:28px 0}.chat-compose{flex-wrap:wrap}.chat-compose label{flex-basis:100%}}

/* Original IOTech wordmark; preserve aspect ratio and keep blue legible on dark headers. */
.brand-logo{display:block;width:150px;height:auto;max-width:100%;object-fit:contain;background:#fff;border-radius:4px}
.auth-story .brand-logo{width:220px}
.topbar .brand-logo{width:125px;max-height:58px;object-fit:contain}
@media(max-width:900px){.topbar .brand-logo{width:105px;max-height:48px}}
@media(max-width:800px){.auth-story .brand-logo{width:160px}}
.course-thumbnail{display:block;width:100%;max-width:520px;max-height:260px;object-fit:cover;border-radius:12px;margin-bottom:16px}.profile-photo{width:100px;height:100px;border-radius:50%;object-fit:cover}fieldset{border:1px solid var(--line);border-radius:10px;margin:18px 0;padding:18px}legend{font-weight:650;padding:0 8px}summary{cursor:pointer;font-weight:650;padding:8px;min-height:44px}.certificate{border:2px solid #a8caba;text-align:center;padding:40px}.sidebar details{border-bottom:1px solid var(--line)}.sidebar summary{font-size:.75rem;color:var(--muted);letter-spacing:.08em}.filter-form{display:flex;gap:14px;flex-wrap:wrap;align-items:end}.filter-form>div{flex:1;min-width:180px}

.section-space{padding:36px 0}.public-menu-toggle{display:none}@media(max-width:700px){.public-menu-toggle{display:inline-flex}.public-header nav{display:none;flex-basis:100%;align-items:stretch;flex-direction:column}.public-menu-open nav{display:flex}.public-header nav>a{padding:10px}.public-header .brand-logo{width:140px}}