:root{--navy:#102a43;--navy2:#174d70;--blue:#1261a0;--cyan:#2d91b3;--green:#138a72;--orange:#b54708;--red:#b42318;--text:#172033;--muted:#667085;--line:#e4eaf0;--bg:#f4f7fa;--white:#fff;--shadow:0 8px 28px #102a4312}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,"Microsoft YaHei",sans-serif}.topbar{height:68px;padding:0 max(24px,calc((100% - 1480px)/2));background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:28px;position:sticky;top:0;z-index:20}.brand{display:flex;align-items:center;gap:12px;color:var(--navy);text-decoration:none;white-space:nowrap}.brand img{width:130px;height:auto}.brand span{font-size:10px;letter-spacing:1.5px;color:#718096}.main-nav{display:flex;gap:4px;margin-left:auto}.main-nav button{border:0;background:transparent;border-radius:8px;padding:9px 13px;color:#526071;cursor:pointer;font:inherit;font-size:14px}.main-nav button.active{background:#edf4ff;color:var(--blue);font-weight:700}.account-button,.primary,.secondary,.danger{border:0;border-radius:8px;padding:10px 15px;font:inherit;cursor:pointer}.account-button,.primary{background:var(--navy);color:#fff}.secondary{background:#edf4ff;color:var(--blue)}.danger{background:#fff0f0;color:var(--red)}.page{max-width:1480px;margin:0 auto;padding:30px 28px 60px}.hero{padding:32px 36px;border-radius:16px;background:linear-gradient(115deg,#0d2942,#176f9e);color:#fff;position:relative;overflow:hidden}.hero:after{content:"";position:absolute;width:330px;height:330px;border:1px solid #ffffff25;border-radius:50%;right:-65px;top:-195px}.hero .eyebrow{font-size:11px;letter-spacing:2px;color:#a9d7ee;margin:0 0 8px}.hero h1{font-size:29px;line-height:1.35;margin:0 0 8px}.hero p{margin:0;color:#dbeafe}.hero .hero-action{margin-top:20px;background:#fff;color:var(--navy)}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin:20px 0 28px}.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:19px 20px;box-shadow:0 3px 12px #102a4308}.stat small{color:var(--muted)}.stat b{display:block;font-size:28px;color:var(--navy);margin-top:6px}.progress-track{height:7px;background:#e9eef3;border-radius:10px;overflow:hidden;margin-top:12px}.progress-track span{display:block;height:100%;background:linear-gradient(90deg,var(--cyan),var(--green));border-radius:10px}.section{margin-top:28px}.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:18px;margin-bottom:14px}.section-head h2{font-size:21px;margin:0}.section-head p{margin:4px 0 0;color:var(--muted);font-size:13px}.filters{display:flex;gap:9px;flex-wrap:wrap;margin:16px 0}.filters button{border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 14px;color:#526071;cursor:pointer}.filters button.active{background:var(--navy);border-color:var(--navy);color:#fff}.course-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.course-card{background:#fff;border:1px solid var(--line);border-radius:13px;overflow:hidden;box-shadow:0 3px 14px #102a430b;display:flex;flex-direction:column;min-width:0}.course-cover{width:100%;height:auto;display:block;background:#edf1f5}.course-body{padding:16px;display:flex;flex:1;flex-direction:column}.tags{display:flex;gap:7px;align-items:center;flex-wrap:wrap}.tag{display:inline-flex;border-radius:5px;padding:4px 8px;background:#edf4ff;color:var(--blue);font-size:12px}.tag.required{background:#fff0e8;color:var(--orange)}.tag.done{background:#e9f7f2;color:var(--green)}.tag.pending{background:#f1f3f5;color:#667085}.course-card h3{font-size:16px;line-height:1.5;height:4.5em;overflow:hidden;margin:10px 0 7px}.course-description{font-size:13px;line-height:1.55;color:var(--muted);height:3.1em;overflow:hidden;margin:0 0 12px}.course-meta{font-size:13px;color:var(--muted);margin-top:auto;padding-top:2px}.course-card .primary{width:100%;margin-top:14px;background:var(--blue)}.panel{background:#fff;border:1px solid var(--line);border-radius:13px;box-shadow:var(--shadow);padding:20px}.module-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:13px}.module{padding:17px;border:1px solid var(--line);border-radius:11px;background:#fff}.module b{display:block;color:var(--navy);line-height:1.45}.module small{color:var(--muted)}.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:12px}table{border-collapse:collapse;width:100%;min-width:800px}th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);font-size:13px;vertical-align:top}th{color:#526071;background:#f8fafc;font-weight:700;white-space:nowrap}tr:last-child td{border-bottom:0}.status{font-weight:700}.status.done{color:var(--green)}.status.learning{color:var(--blue)}.status.none{color:#98a2b3}.login-shell{min-height:calc(100vh - 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