:root{font-family:system-ui,-apple-system,"Microsoft YaHei",sans-serif;color:#183c30;background:#f3f5ef;font-synthesis:none;line-height:1.55}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button{cursor:pointer;touch-action:manipulation}button:disabled{opacity:.45;cursor:wait}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #c2a15c;outline-offset:3px}main{max-width:760px;margin:auto;padding:28px 18px calc(32px + env(safe-area-inset-bottom))}.masthead{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 2px 24px}.eyebrow{margin:0 0 9px;letter-spacing:.12em;font-size:12px;font-weight:700}h1{font-size:clamp(23px,5.8vw,34px);letter-spacing:-.04em;line-height:1.25;margin:0}h2{font-size:18px;margin:0}p{margin:10px 0}.brand-mark{width:48px;height:48px;flex:none;border-radius:50%;display:grid;place-items:center;font-size:30px;color:#f5ead0;background:#183c30}.panel{padding:22px;background:#fff;border:1px solid #dfe6dc;border-radius:18px;margin-bottom:16px}#pair-form{display:grid;gap:16px;margin:24px 0 18px}label{display:grid;gap:7px;font-size:13px;font-weight:600}input,select{min-height:46px;border:1px solid #cdd8cf;border-radius:10px;padding:10px 12px;background:#fff;color:#183c30;width:100%;min-width:0;font-size:16px}small,.muted{font-size:12px;color:#65796e}small{display:block;line-height:1.7}.primary,.secondary{min-height:46px;border-radius:10px;border:1px solid #183c30;padding:10px 14px;font-weight:650}.primary{color:#fff;background:#183c30}.secondary{color:#183c30;background:#f2f6f0}.text-button{border:0;background:transparent;color:#355f4b;min-height:44px;padding:7px;font-size:12px;font-weight:650}.connection{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;font-weight:650}.connection>div{display:flex}.connection.online>span:before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:#4d8d61;margin-right:7px}#snapshot-time{margin:0 0 18px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.class-label{flex:1;max-width:300px}.count{font-size:13px;color:#65796e}.selection-bar{display:flex;align-items:center;justify-content:space-between;gap:6px;font-size:12px;margin:8px 0}.students{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;max-height:55vh;overflow:auto;padding:4px}.student{min-height:90px;text-align:left;background:#fafbf8;border:1px solid #e1e7de;border-radius:12px;padding:13px;color:#183c30;display:grid;gap:5px}.student[aria-pressed=true]{background:#e9f2e5;border:2px solid #315e45;padding:12px}.student strong{font-size:17px;overflow-wrap:anywhere}.student .group{font-size:11px;color:#65796e}.student .balance{font-size:12px}.rules{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:16px}.rule{border:1px solid #dfe6dc;background:#fafbf8;color:#355f4b;border-radius:8px;min-height:40px;padding:7px 11px;font-size:12px}.rule[aria-pressed=true]{background:#e9f2e5;border-color:#315e45}.fields{display:grid;grid-template-columns:90px 1fr;gap:12px}.action-buttons{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;margin:16px 0 12px}.history{display:grid;gap:0}.history-item{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px 12px;padding:13px 0;border-top:1px solid #eef1eb;font-size:13px}.history-item:first-child{border-top:0}.history-item .detail{grid-column:1/-1;color:#65796e;font-size:12px;overflow-wrap:anywhere}.badge{font-size:11px;align-self:start;border-radius:6px;padding:3px 7px;background:#f5f0df;color:#735c2d}.badge.applied{background:#e9f2e5;color:#315e45}.badge.rejected{background:#faece6;color:#8b4936}.empty{padding:20px 0;color:#65796e;font-size:13px}#notice{border-radius:10px;color:#735c2d;background:#f5f0df;padding:12px;font-size:13px;white-space:pre-wrap;overflow-wrap:anywhere}#notice:empty{display:none}.outbox{padding:14px;background:#f5f0df;border-radius:12px;margin-top:18px;font-size:13px}.outbox .primary{margin:8px 0}.outbox small{margin-top:7px}footer{text-align:center;font-size:12px;color:#65796e;padding:12px 8px}[hidden]{display:none!important}@media(min-width:600px){main{padding-top:40px}.panel{padding:26px}.students{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:360px){main{padding:20px 10px}.panel{padding:16px}.action-buttons{gap:5px}.primary,.secondary{padding:10px 7px}.selection-bar{flex-wrap:wrap}}