*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'PingFang SC',sans-serif;background:#F1F8E9;color:#1B4332;line-height:1.5;min-height:100vh}
:root{--primary:#43A047;--accent:#FF7043;--danger:#E53935;--card:#fff;--muted:#5F6F65;--border:#C8E6C9;--contact-footer-h:72px;--fab-offset:100px}
.hidden{display:none!important}
.page{padding:12px 16px 88px;max-width:720px;margin:0 auto}
.r150-view{display:none}
.r150-view.active{display:block}
.tab-bar{display:flex;gap:4px;padding:8px 12px;background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:40}
.tab-btn{flex:1;padding:8px 4px;border:none;background:transparent;font-size:13px;color:var(--muted);cursor:pointer;border-radius:8px}
.tab-btn.active{background:var(--primary);color:#fff}
.hero{background:linear-gradient(135deg,#43A047,#2E7D32);color:#fff;padding:20px 16px;margin:-12px -16px 16px;border-radius:0 0 20px 20px}
.hero h1{margin:0 0 4px;font-size:20px}
.hero p{margin:0;font-size:12px;opacity:.92}
.kpi-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px}
.kpi-card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:12px;text-align:center}
.kpi-card strong{display:block;font-size:22px}
.kpi-card.add strong{color:var(--primary)}
.kpi-card.sub strong{color:var(--danger)}
.student-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:12px 0}
.student-cell{border:2px solid var(--border);border-radius:12px;padding:10px 6px;text-align:center;background:#fff;cursor:pointer;font-size:12px}
.student-cell.selected{border-color:var(--primary);background:#E8F5E9}
.student-cell .avatar{font-size:28px;display:block;margin-bottom:4px}
.merit-chips{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}
.merit-chip{padding:8px 10px;border:1px solid var(--border);border-radius:999px;font-size:12px;background:#fff;cursor:pointer}
.merit-chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.merit-chip.sub.active{background:var(--danger);border-color:var(--danger)}
.score-btns{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}
.score-btn{padding:10px 14px;border:1px solid var(--border);border-radius:8px;background:#fff;font-weight:700;cursor:pointer;min-width:48px}
.score-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.mode-toggle{display:flex;gap:8px;margin-bottom:12px}
.mode-toggle button{flex:1;padding:10px;border-radius:8px;border:1px solid var(--border);background:#fff;cursor:pointer;font-weight:600}
.mode-toggle button.active-add{background:var(--primary);color:#fff;border-color:var(--primary)}
.mode-toggle button.active-sub{background:var(--danger);color:#fff;border-color:var(--danger)}
.rank-item{display:flex;align-items:center;gap:10px;padding:12px;background:#fff;border:1px solid var(--border);border-radius:12px;margin-bottom:8px}
.rank-no{font-size:18px;font-weight:700;width:28px;text-align:center}
.rank-item .avatar{font-size:24px}
.rank-item .name{flex:1;font-weight:600}
.rank-score{font-weight:700;color:var(--primary);font-size:16px}
.log-item{padding:10px 12px;background:#fff;border:1px solid var(--border);border-radius:10px;margin-bottom:6px;font-size:13px}
.log-item.add{border-left:3px solid var(--primary)}
.log-item.sub{border-left:3px solid var(--danger)}
.log-meta{font-size:11px;color:var(--muted);margin-top:4px}
.btn{padding:10px 14px;border-radius:8px;border:none;font-weight:600;cursor:pointer;font-size:14px}
.btn-primary{background:var(--primary);color:#fff}
.btn-danger{background:var(--danger);color:#fff}
.btn-secondary{background:#fff;border:1px solid var(--border)}
.btn-block{display:block;width:100%;margin-top:8px}
.chart-canvas{width:100%;height:100px;margin:8px 0;background:#fff;border:1px solid var(--border);border-radius:8px}
.form-input{width:100%;padding:10px;border:1px solid var(--border);border-radius:8px;margin-bottom:8px;font-size:14px}
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:200;display:flex;align-items:flex-end;justify-content:center}
.modal-sheet{background:#fff;width:100%;max-width:720px;border-radius:16px 16px 0 0;padding:20px;max-height:90vh;overflow:auto}
.report-card{background:#F1F8E9;border:1px solid var(--border);border-radius:12px;padding:16px;margin-top:12px}
.empty{padding:24px;text-align:center;color:var(--muted);font-size:13px}
.r150-toast{position:fixed;bottom:calc(var(--contact-footer-h) + 16px);left:50%;transform:translateX(-50%);background:rgba(0,0,0,.85);color:#fff;padding:10px 18px;border-radius:999px;z-index:999;opacity:0;transition:opacity .2s;font-size:14px}
.r150-toast.show{opacity:1}
body.has-contact-footer{padding-bottom:calc(var(--contact-footer-h) + env(safe-area-inset-bottom))}
body.has-contact-footer .zw-root .zw-fab{bottom:calc(var(--contact-footer-h) + 12px + env(safe-area-inset-bottom))}
.contact-footer{position:fixed;left:0;right:0;bottom:0;z-index:110;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:#1a1a1a;color:#fff;text-align:center}
.contact-footer__btns{display:grid;grid-template-columns:repeat(3,minmax(0,88px));gap:8px;max-width:320px;margin:0 auto 6px;justify-content:center}
.contact-footer__cta,.contact-footer__btn{padding:.48rem .2rem;border-radius:999px;font-size:.72rem;text-decoration:none;border:none;cursor:pointer;display:block;text-align:center}
.contact-footer__cta{background:#c41e1e!important;color:#fff!important}
.contact-footer__btn{background:#333;color:#fff}
.contact-footer__brand{font-size:11px;opacity:.7;margin:0}
.share-main{padding:20px 16px;max-width:480px;margin:0 auto}
.share-card{background:#fff;border-radius:12px;padding:24px;text-align:center;border:1px solid var(--border)}
/* 大屏排行 */
body.mode-board{background:#1B4332;color:#fff}
body.mode-board .tab-bar,body.mode-board .contact-footer,body.mode-board #mode-hint{display:none!important}
body.mode-board .page{padding:24px;max-width:960px}
body.mode-board .rank-item{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2);color:#fff}
body.mode-board .rank-score{color:#A5D6A7}