.a1-point-hub{max-width:1440px;margin:auto;padding:24px 28px 60px}.a1-point-hub>header{display:flex;align-items:center;justify-content:space-between;gap:15px}.a1-point-heading{margin:40px 0 28px}.a1-point-heading>p:first-child{font-size:13px;letter-spacing:.16em;color:#246453;margin:0 0 10px}.a1-point-heading h1{font-size:36px;margin:0 0 12px;color:#143e6c}.a1-point-help{color:#727a80;font-size:15px}.a1-point-layout{display:grid;grid-template-columns:258px minmax(0,1fr);gap:32px;align-items:start}.a1-point-nav{position:sticky;top:15px;max-height:calc(100vh - 30px);overflow:auto;padding-right:10px}.a1-point-nav h2{font-size:15px;color:#7c888d;font-weight:500;margin:0 0 12px}.a1-point-nav button{display:flex;align-items:flex-start;text-align:left;gap:11px;width:100%;border:0;background:transparent;border-radius:10px;padding:12px 10px;color:#526575;cursor:pointer}.a1-point-nav button>span{font:13px Georgia,serif;padding-top:3px;color:#8a989f}.a1-point-nav strong{display:block;font-size:14px;font-weight:500;line-height:1.6}.a1-point-nav small{display:block;font-size:11px;line-height:1.8;color:#89959c;margin-top:2px}.a1-point-nav button:hover{background:#f3f7f6}.a1-point-nav button.active{background:#edf4f0;color:#1e5d4c}.a1-point-nav button.active strong{font-weight:700}.a1-point-workspace{min-width:0;background:#fff;border:1px solid #edf0ed;border-radius:16px;overflow:hidden}.a1-current-heading{padding:20px 24px;border-bottom:1px solid #eef1ee;display:flex;align-items:center;gap:16px}.a1-current-heading>span{font:13px Georgia,serif;color:#80968a;white-space:nowrap}.a1-current-heading h2{font-size:19px;margin:0;color:#17493e;line-height:1.5}.a1-point-frame{width:100%;height:1500px;border:0;display:block;background:white}.a1-practice{margin:20px;border-top:1px solid #e8eeea;padding-top:18px}.a1-practice>summary{font-size:14px;color:#60786e;cursor:pointer}.a1-original-exercise .grammar-shell{padding:18px!important;max-width:100%!important;min-height:0!important}.a1-original-exercise .grammar-shell>header,.a1-original-exercise .grammar-heading,.a1-original-exercise .grammar-nav,.a1-original-exercise footer{display:none!important}.a1-original-exercise .grammar-layout{display:block!important}.a1-original-exercise .grammar-workspace{width:100%;min-width:0}.a1-practice .grammar-intro,.a1-practice .nationality-lesson-guide{display:none}.a1-original-exercise .sentence-builder{min-width:0}.a1-lesson-paging{display:flex;justify-content:space-between;padding:22px;border-top:1px solid #edf0ed}.a1-lesson-paging button{border:0;border-radius:8px;background:#eff4f1;color:#305b4d;padding:12px 16px;cursor:pointer}.a1-lesson-paging button:disabled{opacity:.35;cursor:default}.a1-mobile-select{display:none}.a1-point-hub button:focus-visible,.a1-point-hub select:focus-visible,.a1-point-hub summary:focus-visible{outline:3px solid #bf9b56;outline-offset:2px}@media(max-width:800px){.a1-point-hub{padding:18px 12px 35px}.a1-point-heading{margin:28px 4px 20px}.a1-point-heading h1{font-size:28px}.a1-point-help{font-size:12px;line-height:1.8}.a1-point-nav{display:none}.a1-point-layout{display:block}.a1-mobile-select{display:flex;flex-direction:column;gap:8px;font-size:12px;color:#668072;margin:0 0 18px}.a1-mobile-select select{width:100%;padding:13px 10px;background:white;border:1px solid #d8e2db;border-radius:9px;font-size:15px;color:#214d41}.a1-current-heading{padding:14px 12px;gap:10px}.a1-current-heading h2{font-size:16px}.a1-point-workspace{border-radius:10px}.a1-point-hub>header .back-button{font-size:12px;padding:8px}.a1-point-hub>header .brand{font-size:15px}.a1-practice{margin:14px 10px}.a1-original-exercise .grammar-shell{padding:8px!important}.a1-lesson-paging{padding:14px}.a1-lesson-paging button{font-size:13px;padding:10px 12px}}

.a1-reader-tools{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;padding:12px;background:#f5f8f6;border-bottom:1px solid #e4ece7}.a1-reader-tools button{border:1px solid #cadbd1;background:white;border-radius:7px;padding:8px 11px;color:#245c49;cursor:pointer;font-size:13px;min-height:38px}.a1-reader-tools button:disabled{opacity:.4;cursor:default}.a1-reader-tools label{display:flex;align-items:center;gap:8px;font-size:12px;color:#60756a}.a1-reader-tools input{width:110px;accent-color:#36745c}.a1-reader-tools output{font-size:12px;width:35px;font-variant-numeric:tabular-nums;color:#36594a}.a1-figure-scroll{width:100%;overflow-x:auto;padding:16px 0;background:#f7f9f8;-webkit-overflow-scrolling:touch}.a1-figure-scroll .a1-point-frame{margin:0 auto;max-width:none;box-shadow:0 2px 14px #2348320a}.a1-point-hub{max-width:1240px}.a1-point-layout{gap:24px;grid-template-columns:235px minmax(0,1fr)}
@media(max-width:800px){.a1-point-layout{display:block}.a1-reader-tools{gap:6px;padding:10px 6px}.a1-reader-tools button{font-size:12px;padding:6px 8px}.a1-reader-tools label>span{display:none}.a1-reader-tools input{width:75px}.a1-figure-scroll{padding:8px 0}}