:root{color-scheme:light;--bg:#f6f7f4;--panel:#ffffff;--ink:#17211b;--muted:#66736b;--line:#d9dfd8;--brand:#1f7a5b;--brand-dark:#155940}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Noto Sans Thai,Leelawadee UI,Tahoma,Segoe UI,sans-serif}.shell{width:min(1280px,calc(100vw - 32px));margin:0 auto;padding:32px 0 48px}.topbar{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}.subtitle{margin:10px 0 0;color:var(--muted)}.detail-actions,.modal-actions,.top-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.eyebrow{margin:0 0 6px;color:var(--brand);font-size:13px;font-weight:800;text-transform:uppercase;letter-spacing:.08em}h1{max-width:760px;margin:0;font-size:clamp(28px,4vw,48px);line-height:1.05}h2{margin:0 0 16px;font-size:18px}.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:12px;gap:12px;margin-bottom:18px}.metric,.panel{border:1px solid var(--line);border-radius:8px;background:var(--panel)}.metric{padding:16px}.metric span{display:block;color:var(--muted);font-size:13px}.metric strong{display:block;margin-top:8px;font-size:28px}.message{padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:#eef7f1;color:var(--brand-dark)}.course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:16px;gap:16px}.course-card,.detail-hero,.entity-card{border:1px solid var(--line);border-radius:8px;background:var(--panel)}.course-card{overflow:hidden;cursor:pointer;transition:transform .16s ease,box-shadow .16s ease}.course-card:hover,.entity-card:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(23,33,27,.08)}.card-art{display:flex;align-items:flex-start;justify-content:space-between;min-height:112px;background:linear-gradient(135deg,#d7eee0,#eaf5ee 55%,#f7ead1);color:var(--brand-dark);font-size:13px;font-weight:800}.card-art,.card-body{padding:16px}.card-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.card-heading h2{margin:0;font-size:20px}.card-body p,.entity-copy p{color:var(--muted);line-height:1.5}.card-meta{display:flex;justify-content:space-between;align-items:center;margin-top:18px;color:var(--muted);font-size:13px}.text-button{border:0;background:transparent;color:var(--brand);cursor:pointer;font:inherit;font-weight:800}.danger{color:#a34242!important}.status{display:inline-flex;white-space:nowrap;border-radius:999px;padding:5px 9px;background:#eef1ef;color:var(--muted);font-size:12px;font-weight:800}.status-published{background:#dcefe2;color:var(--brand-dark)}.status-archived{background:#f5e5e5;color:#8c4141}.close-button,.icon-button{border:1px solid var(--line);border-radius:6px;background:white;color:var(--ink);padding:7px 9px;cursor:pointer;font:inherit;font-size:12px;font-weight:800}.icon-button.danger{border-color:#efd1d1}.back-link{border:0;background:none;padding:0;color:var(--brand);cursor:pointer;font:inherit;font-weight:800;margin-bottom:14px}.detail-hero{display:flex;justify-content:space-between;gap:24px;padding:22px;margin-bottom:24px;background:linear-gradient(120deg,#ffffff,#eef8f1)}.detail-hero h2{margin:0 0 8px;font-size:30px}.detail-hero p{max-width:680px;margin:0;color:var(--muted);line-height:1.6}.detail-hero.compact{margin-bottom:20px}.section-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:20px 0 10px}.section-header h2{margin:0}.section-header h2 span{color:var(--muted);font-size:14px}.entity-list{display:grid;grid-gap:10px;gap:10px}.entity-card{display:flex;align-items:center;gap:12px;padding:13px;cursor:pointer}.entity-icon{display:grid;flex:0 0 42px;place-items:center;width:42px;height:42px;border-radius:12px;background:#e2f0e7;color:var(--brand-dark);font-weight:800}.entity-copy{flex:1 1;min-width:0}.entity-copy h3{margin:0 0 3px;font-size:16px}.entity-copy p{overflow:hidden;margin:0 0 4px;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.entity-copy span{color:var(--muted);font-size:12px}.modal-backdrop{position:fixed;z-index:10;inset:0;display:grid;place-items:center;padding:20px;background:rgba(23,33,27,.38)}.modal{width:min(560px,100%);max-height:calc(100vh - 40px);overflow:auto;padding:22px;border-radius:8px;background:var(--panel);box-shadow:0 22px 60px rgba(23,33,27,.22)}.checkpoint-panel{margin-bottom:22px;padding:18px;border:1px solid var(--line);border-radius:8px;background:#fffdf7}.checkpoint-panel .section-header{margin-top:0}.checkpoint-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:10px;gap:10px}.checkpoint-card{display:flex;justify-content:space-between;gap:12px;padding:13px;border:1px solid #eadfca;border-radius:7px;background:#fff}.checkpoint-card h3{margin:7px 0 4px;font-size:15px}.checkpoint-card p{margin:0;color:var(--muted);font-size:12px}.checkpoint-time{color:#8a651a;font-size:12px;font-weight:800}.card-actions{display:flex;align-items:flex-start;gap:6px}.empty-copy{margin:0;color:var(--muted)}.modal-header{display:flex;justify-content:space-between;gap:18px;margin-bottom:18px}.modal-header h2{margin:0}.close-button{font-size:20px;line-height:1}.danger-button{background:#a34242}.guide{display:grid;grid-gap:14px;gap:14px;margin-bottom:16px;background:#f0f8f3;border-color:#c9e3d3}.guide h2{margin-bottom:0}.guide p{margin:0;color:var(--muted);line-height:1.65}.guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:10px;gap:10px}.guide-item{display:grid;grid-gap:5px;gap:5px;padding:12px;border:1px solid #d5e9dc;border-radius:6px;background:rgba(255,255,255,.72)}.guide-item strong{font-size:14px}.guide-item span{color:var(--muted);font-size:13px;line-height:1.55}.guide-note code{border-radius:4px;background:#dcefe2;padding:2px 5px;color:var(--brand-dark);font-family:Consolas,monospace;font-size:.92em}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:16px;gap:16px}.panel{padding:18px}.panel-description{margin:-8px 0 16px;line-height:1.5}.panel-description,label{color:var(--muted);font-size:13px}label{display:grid;grid-gap:6px;gap:6px;margin-bottom:12px;font-weight:700}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--ink);font:inherit;padding:10px 11px}textarea{min-height:84px;resize:vertical}.button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;border:0;border-radius:6px;background:var(--brand);color:white;padding:0 16px;font-weight:800;text-decoration:none;cursor:pointer}.button:hover{background:var(--brand-dark)}.button.secondary{border:1px solid var(--line);background:white;color:var(--brand-dark)}@media (max-width:820px){.topbar{display:grid}.checkpoint-grid,.course-grid,.grid,.guide-grid,.metrics{grid-template-columns:1fr}.detail-hero,.entity-card{align-items:flex-start;flex-wrap:wrap}.entity-copy{flex-basis:calc(100% - 58px)}}