:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#172235;background:#f2f5f9;--blue:#123c70;--line:#e3e9f1}*{box-sizing:border-box}body{margin:0}.top{background:var(--blue);color:white;padding:14px max(16px,calc((100vw - 760px)/2));display:flex;align-items:center;justify-content:space-between;gap:12px}.brand{display:flex;align-items:center;gap:12px}.logo{width:48px;height:48px;object-fit:contain;background:#fff;border-radius:10px;padding:2px;display:block}.brand strong{display:block;font-size:18px}.brand small{display:block;font-size:12px;opacity:.85}.install,.refresh{border:0;border-radius:10px;padding:10px 13px;font-weight:700;cursor:pointer}.install{background:#fff;color:var(--blue);white-space:nowrap;font-size:13px}.install:disabled{opacity:.8}.hidden{display:none!important}main{max-width:760px;margin:auto;padding:18px 14px 30px}.intro h1{font-size:25px;margin:8px 0 3px}.intro p{margin:0;color:#657187;font-size:14px}.controls{margin:18px 0;display:flex;align-items:center;gap:10px;flex-wrap:wrap}.controls label{font-weight:700}.controls select{flex:1;min-width:130px;padding:11px;border:1px solid #ccd6e3;border-radius:10px;background:white;font:inherit}.refresh{background:var(--blue);color:white}.status{padding:14px;background:white;border:1px solid var(--line);border-radius:12px;color:#5b6678}.day-title{font-size:18px;margin:22px 0 10px}.card{background:white;border:1px solid var(--line);border-radius:13px;margin:10px 0;overflow:hidden}.card-head{padding:12px 14px;background:#eaf1fa;color:var(--blue);font-weight:800}.entry{padding:12px 14px;border-top:1px solid var(--line);display:grid;grid-template-columns:46px 1fr;gap:10px}.lesson{font-weight:900;color:var(--blue);background:#edf3fa;border-radius:9px;display:grid;place-items:center;min-height:38px}.entry p{margin:0 0 4px;font-weight:650}.entry small{display:block;color:#647187;line-height:1.4}.tag{display:inline-block;background:#fff3d6;color:#805600;border-radius:6px;padding:2px 7px;font-size:12px;margin-top:5px}.source{margin:24px 0;text-align:center;font-size:14px}.source a{color:var(--blue)}footer{text-align:center;padding:18px;color:#788397;font-size:12px}@media(min-width:600px){main{padding-top:28px}.intro h1{font-size:30px}}
.change-class{border:1px solid #ccd6e3;border-radius:10px;padding:10px 13px;background:#fff;color:var(--blue);font-weight:700;cursor:pointer}
.class-dialog{position:fixed;inset:0;z-index:1000;margin:auto;border:0;padding:18px;background:transparent;width:min(100%,456px);max-width:calc(100% - 24px);overflow:visible}.class-dialog::backdrop{background:rgba(8,20,38,.68)}
.modal-panel{width:100%;background:white;border-radius:18px;padding:22px;box-shadow:0 18px 60px rgba(0,0,0,.25)}
.modal-panel h2{margin:0 0 8px;color:var(--blue);font-size:23px}
.modal-panel p{margin:0 0 18px;color:#5e6b7d;line-height:1.5}
.modal-panel label{display:block;font-weight:700;margin-bottom:7px}
.modal-panel select{width:100%;padding:12px;border:1px solid #ccd6e3;border-radius:10px;background:white;font:inherit;margin-bottom:14px}
.modal-panel button{width:100%}

.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom));transform:translateX(-50%);z-index:1100;width:max-content;max-width:calc(100% - 32px);padding:13px 18px;background:#173f70;color:#fff;border-radius:12px;box-shadow:0 8px 28px rgba(0,0,0,.22);font-weight:700;text-align:center}

.app-version{display:inline-block;margin-top:5px;font-size:12px;opacity:.72;letter-spacing:.02em}

.update-notice{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;padding:10px 14px;background:#fff3cd;color:#664d03;border-bottom:1px solid #ffecb5;font-size:14px}
.update-notice button{border:0;border-radius:8px;background:#123c70;color:#fff;padding:8px 14px;font-weight:600}