:root{--ink:#102d67;--text:#273b5d;--muted:#74839c;--line:#dfe7f2;--blue:#3979ee}*{box-sizing:border-box}body{min-height:100vh;margin:0;color:var(--text);font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;background:#f5f7fb}a{color:inherit;text-decoration:none}button,input{font:inherit}.library-header{display:grid;position:sticky;z-index:20;top:0;grid-template-columns:1fr auto 1fr;min-height:68px;align-items:center;padding:0 max(24px,5vw);border-bottom:1px solid var(--line);background:rgba(255,255,255,.94);backdrop-filter:blur(15px)}.library-header>a{color:#53647d}.library-header h1{margin:0;color:var(--ink);font-size:18px}.library-header button{justify-self:end;min-height:42px;padding:0 18px;border:0;border-radius:10px;color:#fff;background:var(--ink);font-weight:700}.library-header button.danger{color:#bc4146;background:#fff0f1}.library-main{width:min(1100px,calc(100% - 32px));margin:28px auto 70px}.library-tabs{display:flex;gap:8px;margin-bottom:14px}.library-tabs a{padding:10px 16px;border-radius:10px;background:#fff}.library-tabs a.active{color:#fff;background:var(--ink)}.library-summary{margin-bottom:16px;color:var(--muted);font-size:13px}.question-area{display:grid;gap:16px}.review-options{display:grid;gap:7px}.review-options p{margin:0;padding:9px 12px;border-radius:9px;background:#f7f9fc}.review-options b{display:inline-grid;width:28px;height:28px;margin-right:9px;place-items:center;border:1px solid var(--line);border-radius:50%}.review-options p.correct{color:#14734a;background:#eaf8f1}.collection-star{width:40px;height:40px;border:1px solid var(--line);border-radius:10px;color:#9aa7bb;background:#fff;font-size:20px}.collection-star.active{color:#d89113;background:#fff9ea}.record-list{display:grid;gap:10px}.record-row{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:13px;padding:16px;border:1px solid var(--line);border-radius:14px;background:#fff}.record-row>input{width:18px;height:18px}.record-row>a{display:flex;align-items:center;justify-content:space-between;gap:20px}.record-row strong,.record-row small{display:block}.record-row strong{color:var(--ink)}.record-row small{margin-top:5px;color:var(--muted);font-size:12px}.record-score{text-align:right}.record-score b{color:#23744f}.empty-records{padding:60px;border-radius:14px;background:#fff;color:var(--muted);text-align:center}.toast{position:fixed;z-index:100;right:22px;bottom:22px;padding:12px 18px;border-radius:10px;color:#fff;background:#172d53;opacity:0;transform:translateY(10px);transition:.2s}.toast.show{opacity:1;transform:none}input:focus,input:focus-visible,select:focus,select:focus-visible,textarea:focus,textarea:focus-visible{outline:none;-webkit-tap-highlight-color:transparent}@media(max-width:600px){.library-header{grid-template-columns:auto 1fr auto;padding:0 12px}.library-header h1{font-size:15px;text-align:center}.library-header>a{font-size:0}.library-header>a:first-letter{font-size:22px}.library-main{margin-top:18px}.record-row>a{align-items:flex-start;flex-direction:column}.record-score{text-align:left}}