:root{--ink:#17202a;--muted:#718096;--line:#e5e9ef;--paper:#f6f8fb;--blue:#2563eb;--blue2:#dbeafe;--green:#0f9f6e;--orange:#d97706;--purple:#7c3aed;--shadow:0 16px 40px rgba(31,41,55,.08)}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif}.topbar{height:82px;padding:14px max(24px,calc((100vw - 1400px)/2));display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid var(--line)}h1,h2,h3,h4,p{margin-top:0}.topbar h1{font-size:22px;margin:2px 0}.eyebrow{font-size:10px;letter-spacing:.18em;color:var(--blue);font-weight:800}.page{max-width:1400px;margin:auto;padding:30px 24px 60px}.hero{display:flex;justify-content:space-between;align-items:end;margin-bottom:22px}.hero h2{font-size:30px;margin:6px 0 0}.week-nav{display:flex;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}.week-nav a{padding:10px 14px;text-decoration:none;color:var(--ink);border-right:1px solid var(--line);font-size:14px}.week-nav a:last-child{border:0}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}button,.actions button{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:10px;padding:10px 16px;font:inherit;cursor:pointer}.primary{background:var(--blue)!important;color:#fff!important;border-color:var(--blue)!important;font-weight:700}.ghost{background:transparent}.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;margin:0 0 18px;box-shadow:var(--shadow)}.collapsible{display:none}.collapsible.open{display:block}.form-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;align-items:end}.form-grid label{font-size:13px;font-weight:650;color:#475569}.form-grid .span2{grid-column:span 2}input,select,textarea{width:100%;margin-top:7px;padding:11px 12px;border:1px solid #cfd6df;border-radius:9px;background:#fff;color:var(--ink);font:inherit}textarea{resize:vertical}.hint{color:var(--muted);font-size:14px}.feed-row{display:flex;gap:10px;align-items:center;margin-bottom:10px}.feed-row code{flex:1;padding:12px;background:#f1f5f9;border-radius:9px;overflow:auto}.danger-text{color:#b91c1c;background:transparent;border:0;padding-left:0}.week-grid{display:grid;grid-template-columns:repeat(7,minmax(170px,1fr));gap:12px;overflow-x:auto;padding-bottom:12px}.day{background:#fff;border:1px solid var(--line);border-radius:15px;min-height:390px;overflow:hidden}.day>header{display:flex;justify-content:space-between;padding:13px 14px;background:#f8fafc;border-bottom:1px solid var(--line);font-size:13px}.day.today{border:2px solid var(--blue)}.day.today>header{background:var(--blue);color:#fff}.event-list{padding:10px}.event{border-left:4px solid var(--blue);background:#eff6ff;border-radius:8px;padding:10px;margin-bottom:9px}.event.research{border-color:var(--green);background:#ecfdf5}.event.meeting{border-color:var(--orange);background:#fff7ed}.event.personal{border-color:var(--purple);background:#f5f3ff}.event-time{font-size:12px;font-weight:750;color:#475569}.event h4{font-size:14px;margin:5px 0}.event p{font-size:12px;color:#64748b;margin:4px 0}.event-tools{display:flex;gap:5px;margin-top:8px}.event-tools form{display:inline}.event-tools button{font-size:11px;padding:3px 6px;background:transparent;border:0;color:#64748b}.empty{text-align:center;color:#a0aec0;font-size:13px;margin-top:30px}.toast-stack{position:fixed;z-index:5;top:18px;right:18px}.toast{padding:12px 18px;border-radius:10px;background:#17202a;color:#fff;box-shadow:var(--shadow);margin-bottom:8px}.toast.error{background:#b91c1c}.toast.ok{background:#047857}.login-shell{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 20% 20%,#dbeafe,transparent 38%),radial-gradient(circle at 90% 80%,#dcfce7,transparent 32%),#f8fafc}.login-card{width:min(430px,100%);background:#fff;padding:42px;border-radius:24px;box-shadow:0 30px 70px rgba(30,64,175,.14)}.brand-mark{width:54px;height:54px;display:grid;place-items:center;border-radius:15px;background:var(--blue);color:#fff;font-size:25px;font-weight:800}.login-card h1{margin:20px 0 8px}.login-card>p{color:var(--muted);line-height:1.7}.stack{display:grid;gap:18px;margin-top:26px}.stack label{font-size:13px;font-weight:650}@media(max-width:900px){.form-grid{grid-template-columns:1fr 1fr}.week-grid{grid-template-columns:repeat(7,260px)}.hero{align-items:flex-start;gap:20px;flex-direction:column}.topbar{padding:14px 20px}.page{padding:22px 14px}.hero h2{font-size:24px}}@media(max-width:520px){.form-grid{grid-template-columns:1fr}.form-grid .span2{grid-column:auto}.feed-row{align-items:stretch;flex-direction:column}.actions>*{flex:1}.week-nav{width:100%}.week-nav a{flex:1;text-align:center;padding:9px 4px;font-size:13px}.login-card{padding:30px 24px}}