:root{--blue:#175bff;--ink:#152b52;--muted:#697b97;--line:#e2e9f4;--bg:#f7f9fd;--green:#087e58}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--bg);font:16px/1.65 'Nirmala UI','Latha',system-ui,sans-serif}button,input{font:inherit}button{cursor:pointer;border:0}button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #ffb653;outline-offset:3px}button:disabled{cursor:default}header{background:white;border-bottom:1px solid var(--line)}.bar{max-width:1140px;margin:auto;display:flex;justify-content:space-between;align-items:center;padding:20px 24px}.brand{display:flex;gap:12px;align-items:center;background:none;color:var(--ink);text-align:left}.logo{width:44px;height:44px;background:#eaf0ff;color:var(--blue);display:grid;place-items:center;border-radius:12px;font-size:28px;font-weight:800}.brand b{display:block;font-size:21px;line-height:1.3}.brand small{font-size:12px;color:var(--muted)}.tag{border-radius:20px;background:#eef3ff;color:#2158c4;padding:5px 12px;font-size:12px}main{max-width:1140px;margin:32px auto;padding:0 24px 100px}h1{font-size:clamp(25px,4vw,34px);margin:0 0 8px;line-height:1.5}h2{font-size:21px;margin:0 0 18px}.muted{color:var(--muted)}.intro{margin-bottom:30px}.intro p{margin:0}.layout{display:grid;grid-template-columns:215px 1fr;gap:30px}.panel{background:white;border:1px solid var(--line);border-radius:18px;padding:22px}.classes{display:grid;gap:10px}.class{background:#f8faff;border:1px solid var(--line);border-radius:12px;padding:12px;color:var(--ink);text-align:left}.class.active{background:var(--blue);color:white;border-color:var(--blue)}.class:disabled{color:#7c8aa1;background:#f5f6fa}.classes small{display:block;font-size:10px}.subjects{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.subject{padding:25px 20px;background:white;border:1px solid var(--line);border-radius:16px;display:flex;align-items:center;gap:17px;color:var(--ink);text-align:left}.subject strong{font-size:21px}.subject.active{border:2px solid var(--blue);background:#f0f5ff}.subject:disabled{opacity:.65}.icon{width:54px;height:54px;border-radius:16px;display:grid;place-items:center;font-size:26px;background:#eef3ff}.pink{background:#fff0f3}.mint{background:#eafaef}.gold{background:#fff5dc}.topics{margin-top:28px}.search{width:100%;border:1px solid var(--line);background:white;border-radius:12px;padding:13px 16px;color:var(--ink);margin:0 0 14px}.row{display:flex;align-items:center;justify-content:space-between;gap:15px;background:white;border:1px solid var(--line);border-radius:13px;padding:15px 18px;margin:10px 0}.row b{display:block}.row small{color:var(--muted)}.primary{background:var(--blue);color:white;border-radius:11px;padding:12px 20px;font-weight:600}.secondary{background:white;color:var(--ink);border:1px solid var(--line);border-radius:11px;padding:11px 18px}.primary:disabled{background:#ccd5e6;color:#5e6e86}.resume{background:#eaf0ff;border:1px solid #d5e2ff;border-radius:15px;padding:16px;margin-top:20px;display:flex;align-items:center;justify-content:space-between;gap:15px}.note{font-size:13px;color:var(--muted);margin-top:20px}.bottom{position:fixed;bottom:0;left:0;right:0;background:#fffffff5;border-top:1px solid var(--line);display:flex;justify-content:center;gap:60px;padding:10px 16px;z-index:10;backdrop-filter:blur(8px)}.nav{background:none;color:var(--muted);font-size:13px;min-width:65px}.nav span{display:block;font-size:22px;line-height:1.25}.nav.active{color:var(--blue)}.quiz{max-width:740px;margin:auto}.quizhead{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:22px}.back{background:white;border:1px solid var(--line);border-radius:10px;padding:8px 15px;color:var(--ink)}.progress{height:7px;background:#e2e9f4;border-radius:10px;overflow:hidden;margin:12px 0 25px}.progress>div{height:100%;background:var(--blue);transition:width .2s}details{background:#f0f5ff;border:1px solid #dce7ff;border-radius:13px;margin-bottom:20px}summary{padding:14px 17px;cursor:pointer;color:#285185;font-size:14px}details img{display:block;max-width:100%;max-height:360px;object-fit:contain;margin:0 auto;padding:10px}.question{font-size:23px;line-height:1.7;margin:0 0 22px}.options{display:grid;gap:12px}.option{border:1px solid #dce4f1;border-radius:13px;background:white;text-align:left;padding:16px;display:flex;gap:14px;align-items:center;color:var(--ink)}.letter{border:1px solid #d5dff0;border-radius:50%;min-width:32px;height:32px;display:grid;place-items:center;font-size:13px}.option.correct{border:2px solid #14906a;background:#eaf8f0}.option.wrong{border:2px solid #c74954;background:#fff0f0}.feedback{padding:20px;border:1px solid #b7dfce;border-radius:14px;margin-top:22px;background:#eafaef;color:#086244}.feedback.error{background:#fff6ec;border-color:#efd5b4;color:#845227}.feedback p{margin:8px 0 0}.foot{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:22px}.result{text-align:center;padding:30px}.score{font-size:56px;color:var(--blue);font-weight:800;line-height:1.4}.reviewcard{background:white;border:1px solid var(--line);border-radius:14px;padding:20px;margin-top:16px}.reviewcard p{margin:8px 0}.right{color:var(--green)}.wrongtext{color:#b83845}.hidden{display:none!important}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:22px 0}.stat{background:#f0f5ff;border-radius:12px;padding:20px 8px}.stat b{display:block;font-size:27px;color:var(--blue)}@media(max-width:650px){.bar{padding:16px}.brand b{font-size:18px}.logo{width:37px;height:37px}main{margin:24px auto;padding:0 16px 100px}.layout{display:block}.sidebar{padding:0;border:0;background:none;margin-bottom:24px}.classes{grid-template-columns:repeat(4,1fr);gap:9px}.class{text-align:center;padding:12px 5px}.class .classword{display:none}.classes small{font-size:9px}.subject{padding:18px 12px;gap:10px;min-height:98px}.subject strong{font-size:16px}.icon{width:39px;height:39px;border-radius:12px;font-size:22px;flex-shrink:0}.subjects{gap:12px}.intro{margin-bottom:23px}.row{padding:14px 12px}.row b{font-size:15px}.primary{padding:11px 15px}.bottom{gap:30px}.panel{padding:18px}.question{font-size:21px}.quizhead .muted{font-size:13px}.result{padding:20px 12px}.resume{font-size:14px}.foot{position:sticky;bottom:69px;background:#fffffff5;padding:12px 0;backdrop-filter:blur(8px)}.tag{font-size:10px;padding:4px 9px}}

.study-image{display:block;max-width:100%;height:auto;margin:20px auto;background:white;border-radius:8px}.study-label{display:inline-block;background:#eef3ff;border-radius:20px;color:#2859be;padding:5px 12px;font-size:13px}.study-call{background:#eef3ff;border:1px solid #dce7ff;border-radius:14px;padding:20px;text-align:center;margin-top:20px}.study-call p{margin:0 0 14px;font-weight:600}.study-call button{white-space:normal;line-height:1.6}.study-hint{font-size:13px;color:var(--muted);margin:10px 0 0}.question-body h1{scroll-margin-top:25px}

.notice{padding:16px;background:#fff2cf;border:1px solid #ead28d;border-radius:12px;margin-bottom:18px}#tme-box-app{min-height:100vh}.tme-box-page{margin:0}.subjects small{font-size:12px}.subject strong{font-size:19px}@media(max-width:650px){.subjects .subject{align-items:center}.subjects .subject strong{font-size:15px}.subjects .subject small{font-size:11px}.stats{grid-template-columns:repeat(3,1fr)}.stat{font-size:12px}}

.box-login{max-width:520px;margin:40px auto;text-align:center}.box-login h1{font-size:28px;margin:20px 0}.tme-box-google{display:flex;align-items:center;justify-content:center;gap:14px;min-height:56px;width:100%;padding:15px;border:1px solid #b7c9e7;border-radius:12px;background:white;color:#24436e;font-weight:700;box-shadow:0 4px 18px #175bff12}.google-g{font:700 25px Arial;color:#4285f4}.box-login details{text-align:left;margin-top:24px}.box-login form:not(.tme-box-google){padding:12px}.box-login input[type=text],.box-login input[type=password]{display:block;max-width:100%;width:100%;padding:12px;border:1px solid #c5d2e7;border-radius:9px}.box-login input[type=submit]{background:#175bff;color:white;padding:12px;border:0;border-radius:10px}.box-login a{color:#175bff}

.progress-summary{margin:0 0 26px}.progress-summary .stat{text-align:center;padding:16px 10px;border:1px solid #dce7ff}.stat small{display:block;color:var(--muted);font-size:11px;margin-top:5px}.practice-label{display:block;color:#2858ad;font-size:12px;margin-top:7px}.mini-progress{display:block;height:5px;background:#e2e9f4;border-radius:8px;overflow:hidden;margin-top:8px}.mini-progress>span{display:block;height:100%;background:var(--blue)}.subject>span:last-child{flex:1;min-width:0}.result-percent{display:inline-block;background:#eaf8f0;color:#087e58;border-radius:20px;padding:7px 18px;font-weight:700;margin:10px 0}.result-counts{color:var(--muted)}.session-progress .progress{margin-bottom:8px}.session-progress p{margin:8px 0 16px}.progress-heading{margin-top:30px}.bank-progress-list{display:grid;gap:12px}.bank-progress>div:first-child{display:flex;justify-content:space-between;gap:16px}.bank-progress strong{color:var(--blue);white-space:nowrap}.bank-progress p{margin:8px 0;font-size:13px}@media(max-width:650px){.progress-summary{gap:7px}.progress-summary .stat{font-size:11px;padding:14px 5px}.progress-summary .stat b{font-size:23px}.subject strong{overflow-wrap:anywhere}.practice-label{font-size:10px}.bank-progress>div:first-child{font-size:14px}.bank-progress{padding:16px}}

.access-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;background:#fff7e8;border:1px solid #ecd4a6;border-radius:15px;padding:17px 20px;margin:18px 0}.access-banner small{display:block;color:#786039;font-size:12px;margin-top:5px}.buy-pro{display:inline-block;background:#087f46;color:white;text-decoration:none;border-radius:11px;padding:12px 16px;font-weight:700;font-size:14px;text-align:center}.access-banner.pro{background:#eafaef;border-color:#bee3cc;color:#087f46}.access-banner.pro small{color:#38664d}.brand{text-decoration:none}@media(max-width:650px){.access-banner{align-items:stretch;flex-direction:column;padding:15px}.buy-pro{width:100%;font-size:14px}.access-banner b{font-size:15px}}

.quick-tools{display:flex;gap:8px;justify-content:flex-end;flex-wrap:wrap;margin:0 0 20px}.quick-tools button{font-size:13px;padding:9px 12px}.question-tools{display:flex;gap:8px;justify-content:flex-end;margin:16px 0}.saved-item{margin:14px 0}.saved-item h2{font-size:18px;line-height:1.7}.saved-item small{color:var(--muted)}.topics .row>span{flex:1}.topics .row .secondary{padding:10px;font-size:12px}.quiz label{display:block;margin:18px 0 8px}.quiz select,.quiz textarea{display:block;width:100%;padding:12px;border:1px solid #dce3ed;border-radius:10px;font:inherit;margin-bottom:18px}.quiz textarea{min-height:120px}@media(max-width:650px){.quick-tools{justify-content:stretch;gap:6px}.quick-tools button{flex:1;padding:10px 7px;font-size:11px}.topics .row{display:flex;flex-wrap:wrap;gap:10px}.topics .row>span{flex-basis:100%}.topics .row>button{flex:1}.question-tools button{font-size:12px}.saved-item h2{font-size:16px}}

.bottom{gap:0}.bottom .nav{flex:1;max-width:130px;min-width:0;padding:8px 4px}.bottom .nav[data-act="install"]{color:#087e58;font-weight:700}@media(max-width:650px){.bottom{gap:0}.bottom .nav{font-size:11px}}

.login-box-sample{display:block;width:100%;max-width:320px;height:auto;max-height:180px;object-fit:contain;margin:18px auto;border-radius:12px;box-shadow:0 4px 16px #14253e12}.box-login h1{margin:10px 0;font-size:26px;line-height:1.5}.box-login h2{font-size:22px;line-height:1.5;margin:14px 0 10px}.tme-box-google{position:relative;overflow:hidden;border:2px solid transparent;background:linear-gradient(white,white) padding-box,linear-gradient(110deg,#4285f4,#34a853,#fbbc05,#ea4335,#4285f4) border-box;color:#24436e;box-shadow:0 4px 18px #4285f428;transition:box-shadow .2s,transform .2s}.tme-box-google:hover{box-shadow:0 7px 23px #4285f442;transform:translateY(-1px)}.tme-box-google:focus-visible{outline:3px solid #4285f4;outline-offset:4px}.tme-box-google:after{content:"";position:absolute;top:-30%;bottom:-30%;width:26%;left:-45%;background:linear-gradient(90deg,transparent,#4285f41a,transparent);transform:skewX(-20deg);animation:box-google-shine 5s ease-in-out infinite;pointer-events:none}@keyframes box-google-shine{0%,60%{left:-45%}90%,100%{left:125%}}@media(prefers-reduced-motion:reduce){.tme-box-google:after{animation:none}.tme-box-google{transition:none}}@media(max-width:650px){.box-login{margin:16px auto}.box-login h1{font-size:23px}.box-login h2{font-size:20px}.login-box-sample{max-height:155px;margin:14px auto}.box-login>.muted{font-size:14px}.box-login .note{font-size:12px}.tme-box-google{min-height:54px}}

.subject-hint{color:var(--muted);font-size:14px;padding:12px 0}.topics-screen>h1{font-size:28px;line-height:1.5;margin:8px 0}.topic-breadcrumb{font-size:14px;color:#175bff;margin:20px 0 6px}.topic-help{color:var(--muted);font-size:14px}.topics-screen .topics{margin-top:20px}@media(max-width:650px){.topics-screen>h1{font-size:23px}.topics-screen>.back{padding:10px 0}.topic-breadcrumb{font-size:13px}}

.box-pro-overlay{position:fixed;inset:0;z-index:10000;background:#102343b3;display:flex;align-items:center;justify-content:center;padding:18px;backdrop-filter:blur(4px);overflow:auto;overscroll-behavior:contain}.box-pro-dialog{position:relative;width:100%;max-width:460px;max-height:calc(100dvh - 36px);overflow:auto;border-radius:24px;background:white;padding:30px;color:#14253e;box-shadow:0 24px 80px #0004;outline:none}.box-pro-close{position:absolute;top:10px;right:12px;border:0;background:#eff3f9;color:#38516c;border-radius:50%;width:36px;height:36px;font-size:26px;line-height:1;cursor:pointer}.box-pro-badge{display:inline-block;background:#eaf7ee;color:#087f46;font-weight:800;font-size:12px;letter-spacing:1px;padding:6px 12px;border-radius:20px}.box-pro-dialog h2{font-size:23px;line-height:1.5;margin:16px 0 10px}.box-pro-dialog p{font-size:14px;line-height:1.8;color:#526681;margin:0 0 16px}.box-pro-price{font-size:38px;font-weight:800;color:#087f46}.box-pro-price span{font-size:16px;font-weight:500;color:#526681}.box-pro-dialog ul{padding-left:20px;font-size:13px;line-height:1.9;margin:12px 0 20px}.box-pro-buy{display:block;width:100%;padding:15px 10px;font-size:16px;box-shadow:0 5px 14px #087f4633}.box-pro-later{display:block;background:transparent;border:0;color:#526681;font:inherit;font-size:13px;width:100%;padding:15px 0;cursor:pointer}.box-pro-dialog>small{display:block;color:#64758e;font-size:11px;line-height:1.7;text-align:center}.box-pro-dialog :focus-visible{outline:3px solid #1958ff;outline-offset:3px}@media(max-width:480px){.box-pro-dialog{padding:25px 20px;border-radius:20px}.box-pro-dialog h2{font-size:20px}.box-pro-dialog p{font-size:13px}.box-pro-price{font-size:34px}}

/* A moving gold highlight stays outside the source content. */
.source-shine{display:block;width:fit-content;max-width:100%;margin:20px auto;padding:3px;border-radius:12px;background:#d7a536;background:linear-gradient(115deg,#b88020 0%,#efd27a 20%,#fff7c7 28%,#d9a634 36%,#c68e26 60%,#ffefac 76%,#b88020 100%);background-size:300% 300%;animation:box-source-shine 7s linear infinite;box-shadow:0 0 12px #e7b74340;isolation:isolate}.source-shine>img,.source-shine>.study-image,.source-shine>.login-box-sample{display:block;max-width:100%;height:auto;margin:0;padding:0;border-radius:9px;background:white;box-shadow:none}.source-shine.login-source-shine{max-width:326px}.source-shine>.login-box-sample{width:306px;max-height:none}.source-shine>img{object-fit:contain}details .source-shine{max-width:calc(100% - 24px);margin:6px auto 16px}details .source-shine>img{max-height:360px}@keyframes box-source-shine{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}@media(prefers-reduced-motion:reduce){.source-shine{animation:none;background-position:50% 50%}}@media(max-width:650px){.source-shine{padding:3px;box-shadow:0 0 9px #e7b74335}.source-shine.login-source-shine{max-width:min(100%,312px)}}

.source-shine{cursor:zoom-in}.source-shine:focus-visible{outline:3px solid #1958ff;outline-offset:4px}.source-shine:after{content:"⤢ தொட்டு பெரிதாக்குங்கள்";display:block;font-size:11px;line-height:1.6;text-align:center;color:#526681;background:#fffdf5;padding:4px 8px;border-radius:0 0 8px 8px}.box-image-viewer[open]{display:flex;flex-direction:column;position:fixed;inset:0;width:100vw;height:100dvh;max-width:none;max-height:none;margin:0;padding:0;border:0;border-radius:0;background:#101a2a;color:white;overflow:hidden;z-index:10001}.box-image-viewer::backdrop{background:#101a2a}.image-viewer-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-shrink:0;padding:12px 16px;padding-top:max(12px,env(safe-area-inset-top));background:#18263c;border-bottom:1px solid #ffffff25}.image-viewer-toolbar>div{display:flex;gap:8px;align-items:center}.image-viewer-toolbar button{font:inherit;background:#fff;color:#14253e;border-radius:8px;padding:8px 13px;min-width:44px;min-height:44px;font-weight:700}.image-viewer-toolbar button:disabled{opacity:.5}.image-viewer-toolbar [data-close]{background:#e2eaff}.image-viewer-hint{margin:0;padding:8px 16px;font-size:12px;color:#c7d5e9;text-align:center;flex-shrink:0}.image-viewer-stage{flex:1;min-height:0;overflow:auto;overscroll-behavior:contain;padding:16px;touch-action:pan-x pan-y pinch-zoom}.image-viewer-canvas{display:flex;width:max-content;min-width:100%;min-height:100%;align-items:center;justify-content:center}.image-viewer-canvas img{display:block;max-width:none;max-height:none;height:auto;flex-shrink:0;background:white;user-select:none}.box-image-viewer button:focus-visible{outline:3px solid #ffcf70;outline-offset:3px}@media(max-width:480px){.image-viewer-toolbar{gap:6px;padding:10px 8px;padding-top:max(10px,env(safe-area-inset-top))}.image-viewer-toolbar>b{font-size:13px}.image-viewer-toolbar>div{gap:5px}.image-viewer-toolbar button{padding:8px 10px;font-size:14px}.image-viewer-hint{font-size:11px;padding:8px}}