/* Oshurn OS — application-first visual system */
:root{--os-bg:#f5f7fa;--os-surface:#fff;--os-ink:#0b1118;--os-muted:#71808e;--os-line:#dfe5eb;--os-accent:#0879c9;--os-sidebar:232px}*{box-sizing:border-box}.app-shell{background:var(--os-bg);color:var(--os-ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text",Arial,sans-serif}.app-shell .site-header{height:58px;background:rgba(255,255,255,.9);border-bottom:1px solid var(--os-line);box-shadow:0 1px 10px rgba(15,30,45,.04)}.app-shell .nav-wrap{height:58px}.app-shell .brand img{width:112px;height:36px}.app-top-actions{display:flex;align-items:center;gap:12px}.online{font-size:9px;color:#4f6676;letter-spacing:.08em}.app-avatar{display:grid;place-items:center;width:29px;height:29px;border:1px solid var(--os-line);border-radius:9px;background:#fff;font-size:10px;font-weight:700}.workspace-search{width:220px;height:32px;border:1px solid var(--os-line);border-radius:8px;background:#f8fafb;padding:0 12px;font-size:10px;outline:none}.workspace-search:focus{border-color:#a8cde3;background:#fff}.app-page{min-height:calc(100vh - 58px)}.app-layout{width:min(1420px,calc(100% - 32px));display:grid;grid-template-columns:var(--os-sidebar) minmax(0,1fr);gap:0;margin:0 auto}.app-sidebar{position:sticky;top:58px;height:calc(100vh - 58px);padding:25px 14px 20px 0;border-right:1px solid var(--os-line);display:flex;flex-direction:column}.app-sidebar img{width:108px;margin:0 0 28px 12px}.app-sidebar a{height:38px;display:flex;align-items:center;gap:11px;padding:0 12px;margin:2px 8px 2px 0;border-radius:8px;color:#697a87;font-size:10px}.app-sidebar a:hover{background:#fff;color:var(--os-ink)}.app-sidebar a.active{background:#fff;color:var(--os-ink);box-shadow:0 1px 3px rgba(20,40,55,.06);font-weight:700}.app-content{padding:38px 42px 80px;min-width:0}.app-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:28px}.app-heading small,.app-section-head small,.app-panel small,.value-card small,.app-extension small{font-size:8px;letter-spacing:.16em;color:#758795;font-weight:700}.app-heading h1{font-size:32px;letter-spacing:-.04em;margin:7px 0 3px}.app-heading p{font-size:11px;color:var(--os-muted);margin:0}.ghost-btn{border:1px solid var(--os-line);background:#fff;border-radius:8px;padding:10px 14px;font-size:9px}.app-metrics{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--os-line);border-radius:12px;overflow:hidden;box-shadow:0 2px 8px rgba(20,40,55,.035)}.app-metrics article{min-height:132px;padding:22px;border-right:1px solid var(--os-line)}.app-metrics article:last-child{border-right:0}.app-metrics strong{font-size:29px;letter-spacing:-.04em;margin:10px 3px 2px 0}.app-metrics span{font-size:9px;color:#8a98a3}.app-metrics em{display:block;font-size:8px;color:#6f818e;font-style:normal;margin-top:8px}.app-metrics em a{color:var(--os-accent)}.app-section-head{display:flex;justify-content:space-between;align-items:center;margin:38px 0 14px}.app-section-head h2{font-size:15px;letter-spacing:-.02em;margin:0}.app-section-head a,.app-section-head>span{font-size:9px;color:#71818e}.app-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.app-cards>a{background:#fff;border:1px solid var(--os-line);border-radius:10px;padding:20px;min-height:178px;display:flex;flex-direction:column;transition:.16s}.app-cards>a:hover{transform:translateY(-2px);border-color:#bcd4e3;box-shadow:0 8px 24px rgba(20,40,55,.06)}.app-cards b{font-size:13px;color:var(--os-accent);width:30px;height:30px;border:1px solid #d9e7ef;border-radius:8px;display:grid;place-items:center}.app-cards strong{font-size:13px;margin-top:19px}.app-cards small{font-size:9px;line-height:1.6;color:var(--os-muted);margin-top:6px}.app-cards span{font-size:8px;color:var(--os-accent);margin-top:auto}.value-layer{padding-top:5px}.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.value-card{background:#fff;border:1px solid var(--os-line);border-radius:10px;padding:19px;min-height:160px}.value-card strong{display:block;font-size:13px;margin:10px 0 5px}.value-card p{font-size:9px;color:var(--os-muted);line-height:1.65;margin:0}.value-card span{display:block;font-size:8px;color:var(--os-accent);margin-top:12px}.command-panel,.app-panel{background:#fff;border:1px solid var(--os-line);border-radius:12px;box-shadow:0 2px 8px rgba(20,40,55,.03)}.command-panel{margin-top:24px;padding:24px}.panel-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px}.panel-head h2{font-size:17px;margin:5px 0 0;letter-spacing:-.03em}.panel-head>span,.panel-head>a{font-size:8px;color:#778996}.command-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:30px;margin-top:25px}.command-main h3,.readiness h3{font-size:13px;margin:0 0 7px}.command-main p,.readiness p{font-size:9px;color:var(--os-muted);line-height:1.7;max-width:520px}.action-list{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--os-line);margin-top:20px}.action-list a{padding:12px 4px;border-bottom:1px solid var(--os-line);font-size:9px}.action-list span{float:right;color:var(--os-accent)}.readiness{border-left:1px solid var(--os-line);padding-left:28px}.readiness-bar{height:5px;background:#edf1f4;border-radius:10px;margin:22px 0 9px}.readiness-bar i{display:block;width:76%;height:100%;border-radius:10px;background:var(--os-accent)}.app-columns{display:grid;grid-template-columns:1.3fr 1fr;gap:12px;margin-top:24px}.app-panel{padding:24px}.snapshot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:20px}.snapshot-grid>div{padding:16px;border:1px solid var(--os-line);border-radius:8px}.snapshot-grid strong{display:block;font-size:21px;margin-top:8px}.app-panel>p{font-size:9px;color:var(--os-muted);line-height:1.7}.goal{display:flex;gap:12px;margin-top:22px}.goal-icon{width:29px;height:29px;border-radius:8px;border:1px solid var(--os-line);display:grid;place-items:center;color:var(--os-accent);font-size:10px}.goal>div{flex:1}.goal strong{display:block;font-size:10px}.goal small{font-size:8px;color:#80909b}.progress,.lesson-progress{height:4px;background:#edf1f4;border-radius:10px;margin-top:8px;overflow:hidden}.progress i,.lesson-progress i{display:block;height:100%;background:var(--os-accent)}.learning-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.learning-row article{background:#fff;border:1px solid var(--os-line);border-radius:10px;padding:20px;min-height:145px}.learning-row h3{font-size:13px;line-height:1.35;margin:12px 0 25px}.learning-row span{display:block;font-size:8px;color:#7d8d99;margin-top:8px}.app-extension{margin-top:24px;padding:28px;border:1px solid var(--os-line);border-radius:12px;background:#0b1118;color:#fff;display:flex;justify-content:space-between;align-items:center;gap:25px}.app-extension h2{font-size:19px;margin:5px 0}.app-extension p{font-size:9px;color:#aab7c1}.app-extension .btn{background:#fff;color:#0b1118}.app-footer-note{font-size:8px!important;color:#8b99a4!important}.trend-chart{height:120px;border-bottom:1px solid var(--os-line);margin-top:18px}.insight-list{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.insight-list p{margin:0;padding:14px;border:1px solid var(--os-line);border-radius:8px}.workspace-search-wrap{position:relative}.workspace-search-results{position:absolute;right:0;top:39px;width:300px;background:#fff;border:1px solid var(--os-line);border-radius:9px;box-shadow:0 15px 35px rgba(20,40,55,.12);z-index:30}@media(max-width:1050px){.app-cards,.value-grid{grid-template-columns:repeat(2,1fr)}.app-metrics{grid-template-columns:repeat(2,1fr)}.app-metrics article:nth-child(2){border-right:0}.app-metrics article:nth-child(-n+2){border-bottom:1px solid var(--os-line)}.app-columns{grid-template-columns:1fr}}@media(max-width:760px){.app-layout{display:block;width:100%}.app-sidebar{position:sticky;top:58px;z-index:15;height:auto;overflow:auto;flex-direction:row;padding:7px 10px;border-right:0;border-bottom:1px solid var(--os-line);background:rgba(245,247,250,.96)}.app-sidebar img{display:none}.app-sidebar a{flex:0 0 auto;margin:0;height:34px}.app-content{padding:24px 14px 60px}.app-heading{align-items:flex-start;flex-direction:column}.app-top-actions .online{display:none}.workspace-search{width:150px}.app-cards,.value-grid,.learning-row,.insight-list{grid-template-columns:1fr}.command-grid{grid-template-columns:1fr}.readiness{border-left:0;border-top:1px solid var(--os-line);padding:20px 0 0}.snapshot-grid{grid-template-columns:1fr}.app-extension{align-items:flex-start;flex-direction:column}}