:root{--ink:#18231d;--muted:#66736b;--line:#dce4df;--paper:#fff;--bg:#f4f7f5;--brand:#1f7a4d;--brand-soft:#e9f5ee;--danger:#c62828}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;font-size:16px;line-height:1.6}.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;padding:12px max(18px,calc((100% - 820px)/2));background:rgba(255,255,255,.96);border-bottom:1px solid var(--line)}.topbar strong{display:block;font-size:18px}.topbar small{display:block;color:var(--muted)}.progress-text{font-size:14px;color:var(--muted)}.progress-track{position:sticky;top:72px;z-index:6;height:3px;background:#e5ebe7}.progress-track span{display:block;width:0;height:100%;background:var(--brand);transition:width .2s}.form-shell{width:min(820px,calc(100% - 28px));margin:24px auto 60px}.identity-card,.form-section,.message-card{background:var(--paper);border:1px solid var(--line);border-radius:12px;box-shadow:0 5px 20px rgba(27,54,40,.05)}.identity-card{padding:18px 22px;margin-bottom:16px}.identity-card p{margin:0 0 12px;color:var(--muted)}.identity-card>div{display:flex;gap:40px}.identity-card span{color:var(--muted)}.identity-card strong{display:block;color:var(--ink);font-size:18px}.form-section{padding:24px;margin:16px 0}.form-section h2{display:flex;align-items:center;gap:10px;margin:0 0 20px;font-size:20px}.form-section h2 span{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--brand);color:white;font-size:14px}label{display:block;margin:13px 0 5px;font-weight:600}label b,legend b{color:var(--danger)}input,textarea,select{width:100%;margin-top:7px;padding:11px 12px;border:1px solid #bcc9c1;border-radius:7px;background:white;color:var(--ink);font:inherit;outline:none}input:focus,textarea:focus,select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,122,77,.12)}textarea{resize:vertical}.grid-2,.grid-3{display:grid;gap:14px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}fieldset{margin:16px 0;padding:0;border:0}legend{font-weight:600}.choice,.checkbox-row{display:inline-flex;align-items:center;gap:7px;margin:8px 22px 8px 0;font-weight:400}.choice input,.checkbox-row input{width:auto;margin:0}.checkbox-row{padding:9px 12px;border-radius:7px;background:var(--brand-soft)}.branch-box{margin:14px 0;padding:16px;border-left:3px solid var(--brand);background:#f8fbf9}.field-error{margin:4px 0;color:var(--danger);font-size:14px}.submit-area{text-align:center;padding:16px}.submit-area p{color:var(--muted);font-size:14px}.submit-area button,.button,.login-card button{display:inline-block;min-width:170px;padding:12px 24px;border:0;border-radius:8px;background:var(--brand);color:white;font:inherit;font-weight:700;text-decoration:none;cursor:pointer}.center-page{display:grid;min-height:100vh;place-items:center;padding:20px}.message-card{width:min(480px,100%);padding:36px;text-align:center}.message-card h1{margin:0 0 10px}.message-card p{color:var(--muted)}.success-mark{display:grid;place-items:center;width:58px;height:58px;margin:0 auto 18px;border-radius:50%;background:var(--brand-soft);color:var(--brand);font-size:32px;font-weight:700}[hidden]{display:none!important}.login-card form{text-align:left}.login-card button{display:block;margin:20px auto 0}.admin-header{display:flex;align-items:center;justify-content:space-between;padding:16px max(18px,calc((100% - 1000px)/2));background:white;border-bottom:1px solid var(--line)}.admin-header strong,.admin-header span{display:block}.admin-header span{color:var(--muted);font-size:14px}.admin-header nav{display:flex;gap:18px}.admin-header a{color:var(--brand);text-decoration:none}.admin-shell{width:min(1000px,calc(100% - 28px));margin:24px auto}.notice,.save-notice{padding:16px;margin-bottom:18px;border:1px solid #afd5bd;border-radius:9px;background:var(--brand-soft)}.copy-row{display:flex;gap:8px;margin-top:10px}.copy-row input{margin:0}.copy-row button{border:0;border-radius:7px;padding:0 18px;background:var(--brand);color:white}.student-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.student-card{padding:22px;background:white;border:1px solid var(--line);border-radius:12px}.student-head{display:flex;justify-content:space-between}.student-head h2,.student-head p{margin:0}.student-head p{color:var(--muted)}.status{height:max-content;padding:4px 10px;border-radius:99px;background:#f0f1f0;color:var(--muted);font-size:13px}.status.done{background:var(--brand-soft);color:var(--brand)}dl{margin:18px 0}dl div{display:grid;grid-template-columns:100px 1fr;padding:8px 0;border-bottom:1px solid #eef1ef}dt{color:var(--muted)}dd{margin:0}.highlight{color:var(--danger);font-weight:700}.card-actions{display:flex;gap:10px}.card-actions form{margin:0}.button.small{min-width:0;padding:8px 14px;font-size:14px}.button.secondary{background:#eef2ef;color:var(--ink)}@media(max-width:650px){.grid-2,.grid-3,.student-cards{grid-template-columns:1fr}.form-shell{width:min(100% - 18px,820px);margin-top:12px}.form-section{padding:19px 16px}.identity-card{padding:16px}.identity-card>div{gap:22px}.topbar{padding:10px 12px}.progress-track{top:68px}.choice{margin-right:16px}.admin-header{padding:12px}.admin-header nav{gap:10px}.copy-row{display:block}.copy-row button{width:100%;padding:10px;margin-top:8px}.card-actions{flex-wrap:wrap}}