:root{--green: #168a4a;--green-dark: #0d5f34;--green-soft: #e8f6ee;--ink: #173126;--muted: #64756b;--line: #d7e7de;--surface: #f5fbf7;--white: #ffffff;--danger: #b3261e;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;min-height:100vh;color:var(--ink);background:linear-gradient(180deg,var(--surface),#ffffff)}#root{min-height:100vh}a{color:inherit;text-decoration:none}button,input{font:inherit}button{min-height:44px;border:0;border-radius:8px;padding:0 18px;color:var(--white);background:var(--green);cursor:pointer;font-weight:700}button:hover{background:var(--green-dark)}button:disabled{cursor:not-allowed;opacity:.55}button.secondary{color:var(--green-dark);background:var(--green-soft)}button.danger{background:var(--danger)}.compact-button{min-height:36px;padding:0 12px}input{width:100%;min-height:44px;border:1px solid var(--line);border-radius:8px;padding:0 12px;background:var(--white)}.auth-shell{display:grid;min-height:100vh;place-items:center;padding:24px}.auth-panel{width:min(460px,100%)}.brand{display:flex;align-items:center;gap:16px;margin-bottom:24px}.brand-mark{display:grid;width:56px;height:56px;place-items:center;border-radius:14px;color:var(--white);background:var(--green);font-size:28px;font-weight:900}h1,h2,h3,p{margin-top:0}.brand h1{margin-bottom:6px}.brand p,.muted{color:var(--muted)}.form-card,.panel{border:1px solid var(--line);border-radius:8px;padding:22px;background:#ffffffeb;box-shadow:0 18px 40px #145a3414}.glass-card{border:1px solid rgba(215,231,222,.72);border-radius:8px;padding:16px;background:#ffffff94;box-shadow:0 18px 38px #145a341f;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.form-card{display:grid;gap:16px}.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid var(--line);padding:14px clamp(16px,4vw,40px);background:#fffffff0;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.logo{color:var(--green-dark);font-weight:900}nav{display:flex;gap:8px;flex:1;justify-content:flex-end}nav a{border-radius:8px;padding:8px 12px;color:var(--muted)}nav a.active,nav a:hover{color:var(--green-dark);background:var(--green-soft)}.page-grid{display:grid;grid-template-columns:minmax(260px,360px) minmax(0,1fr);gap:18px;width:min(1180px,100%);margin:0 auto;padding:24px}.page-grid .panel:last-child{grid-column:2}.section-title{display:flex;align-items:center;justify-content:space-between;gap:12px}.upload-box{display:grid;gap:10px;margin:16px 0;color:var(--green-dark);font-weight:700}.upload-records{display:grid;gap:12px;margin-top:16px}.file-button{display:inline-flex;align-items:center;justify-content:center;min-height:36px;border-radius:8px;padding:0 12px;color:var(--white);background:var(--green);cursor:pointer;font-weight:700}.file-button input{display:none}.record-table{display:grid;gap:8px;overflow-x:auto}.record-row{display:grid;grid-template-columns:minmax(120px,1.4fr) minmax(150px,1.1fr) minmax(120px,1fr) minmax(128px,auto);align-items:center;gap:10px;min-width:620px;border:1px solid rgba(215,231,222,.72);border-radius:8px;padding:10px;background:#ffffff85}.record-head{color:var(--green-dark);background:#e8f6eebd;font-weight:800}.record-actions{display:flex;flex-wrap:wrap;gap:8px}.progress-card{display:grid;grid-template-columns:1fr 1fr auto;align-items:center;gap:12px;margin:16px 0}.progress-card div{display:grid;gap:2px}.progress-card strong{color:var(--green-dark);font-size:24px}.progress-card span{color:var(--muted);font-size:13px}.message{min-height:24px;color:var(--muted);white-space:pre-line}.message.error{color:var(--danger)}.message.success{color:var(--green-dark)}.question-panel{min-height:360px}.options{display:grid;gap:12px;margin:22px 0}.option{display:flex;align-items:flex-start;gap:10px;border:1px solid var(--line);border-radius:8px;padding:14px;background:var(--white)}.option input{width:auto;min-height:auto;margin-top:4px}.actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px}.analysis-box{min-height:140px;border:1px dashed var(--line);border-radius:8px;padding:16px;background:#fbfffc;line-height:1.7;white-space:pre-line}.wrong-list{display:grid;gap:10px}.wrong-item{height:auto;min-height:48px;color:var(--ink);background:var(--white);border:1px solid var(--line);text-align:left}.wrong-item:hover{color:var(--green-dark);background:var(--green-soft)}.empty{color:var(--muted);padding:24px;text-align:center}.search{margin-top:12px}.exam-controls{display:grid;grid-template-columns:1fr 1fr;gap:12px}@media (max-width: 780px){.topbar{align-items:flex-start;flex-direction:column}nav{width:100%}nav a{flex:1;text-align:center}.page-grid{grid-template-columns:1fr;padding:16px}.page-grid .panel:last-child{grid-column:auto}.section-title{align-items:flex-start;flex-direction:column}.record-table{overflow-x:visible}.record-row{grid-template-columns:1fr;min-width:0}.progress-card{grid-template-columns:1fr}}