a.bursa-nature-link{color:#143d2c;letter-spacing:.03em;white-space:nowrap;background:#f5f9f4;border:1px solid #cad9cd;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;gap:8px;min-height:44px;padding:6px 10px;font-family:Arial,Helvetica,sans-serif;font-size:13px;font-weight:600;line-height:1.2;text-decoration:none;display:inline-flex}a.bursa-nature-link img{object-fit:contain;flex-shrink:0;width:32px;height:32px}a.bursa-nature-link strong{font-weight:800}a.bursa-nature-link:hover{background:#e8f1e5;text-decoration:none}a.bursa-nature-link:focus-visible{outline-offset:3px;outline:3px solid #39734a}@media (width<=550px){a.bursa-nature-link{gap:6px;padding:6px 8px;font-size:12px}a.bursa-nature-link img{width:28px;height:28px}}.login-page{position:relative}.bursa-nature-login-return{z-index:5;position:absolute;top:18px;right:22px}.login-page .login-side{padding-top:80px}.teacher-actions,.student-header-tools{flex-wrap:wrap}@media (width<=700px){.bursa-nature-login-return{top:14px;right:14px}.login-page .login-copy{padding-top:50px}.login-page .login-side{padding-top:32px}.work>header{flex-wrap:wrap;gap:14px}.student-header-tools,.teacher-actions{gap:10px}}@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial}}}@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.visible{visibility:visible}.absolute{position:absolute}.fixed{position:fixed}.relative{position:relative}.start{inset-inline-start:var(--spacing)}.contents{display:contents}.hidden{display:none}.inline{display:inline}.table{display:table}.rounded{border-radius:.25rem}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.ring{--tw-ring-shadow:var(--tw-ring-inset,) 0 0 0 calc(1px + var(--tw-ring-offset-width)) var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}}@media (width<=700px){.lesson-result{padding:20px}.lesson-result-head{display:block}.lesson-result-head mark{margin-top:10px;display:inline-block}.lesson-result p{font-size:15px;line-height:1.75}.lesson-concepts>div:last-child,.lesson-examples>div:last-child{grid-template-columns:1fr}}@media print{@page{size:A4;margin:14mm}body{background:#fff!important}body *{visibility:hidden}.lesson-result,.lesson-result *{visibility:visible}.lesson-result{width:100%;max-width:none;box-shadow:none;color:#172f29;border:0;padding:0;position:absolute;inset:0}.lesson-actions{display:none!important}.lesson-result section,.concept-figure,.lesson-concepts article,.lesson-examples article{break-inside:avoid}.lesson-result p{font-size:11pt;line-height:1.55;color:#263f39!important}.lesson-result-head{margin-bottom:18px}.lesson-result-head h2{font-size:24pt}.concept-figure{-webkit-print-color-adjust:exact;print-color-adjust:exact;background:#f4faf7!important}.lesson-summary{-webkit-print-color-adjust:exact;print-color-adjust:exact;color:#172f29!important;break-inside:auto!important;page-break-inside:auto!important;background:#f2f8f5!important;border:1px solid #a9c9be!important;display:block!important}.lesson-summary .lesson-section-title,.lesson-summary .lesson-section-title h3,.lesson-summary p{visibility:visible!important;color:#172f29!important;opacity:1!important;display:block!important}.lesson-summary p{white-space:normal!important;overflow:visible!important}}@media (width<=600px){body{-webkit-text-size-adjust:100%;overflow-x:hidden}.login-page{min-height:100svh;display:block!important}.login-brand{align-items:flex-start!important;min-height:auto!important;padding:28px 22px 30px!important}.login-copy{text-align:center;width:100%}.bios-logo{width:112px!important;height:112px!important;margin:0 auto 8px!important}.bios-name{letter-spacing:7px!important;font-size:30px!important;line-height:1!important}.bios-rule{margin:12px auto 17px!important}.login-school-logo{width:72px!important;height:90px!important;margin:13px auto 5px!important}.login-copy h1{margin:12px 0!important;font-size:29px!important;line-height:1.12!important}.login-copy p{max-width:34ch;margin:0 auto!important;font-size:14px!important;line-height:1.55!important}.login-side{padding:16px!important;display:block!important}.login-card{margin:0 auto;border-radius:17px!important;padding:24px 20px!important}.login-card h2{font-size:25px}.login-card input,.login-submit,.role-switch button{min-height:48px;font-size:16px}.shell{min-width:0;display:block!important}.shell>aside{z-index:20;position:sticky;top:0;box-shadow:0 3px 14px #102f2828;padding:10px 12px!important}.brand{margin:0 0 8px!important}.brand b{font-size:17px!important}.brand small{display:none!important}.shell nav{scrollbar-width:none;grid-template-columns:repeat(5,minmax(78px,1fr));gap:5px;padding-bottom:2px;overflow-x:auto;display:grid!important}.shell nav::-webkit-scrollbar{display:none}.shell nav button{line-height:1.2;text-align:center!important;white-space:normal!important;min-height:48px!important;padding:8px 6px!important;font-size:11px!important}.shell nav i{margin-bottom:3px;width:auto!important;display:block!important}.work{min-width:0}.work header{height:68px!important;padding:12px 16px!important}.work header em{letter-spacing:1px!important;font-size:8px!important}.work header h1{margin-top:4px!important;font-size:21px!important}.logout{padding:8px 11px!important}.content{width:100%;min-width:0;padding:20px 14px!important}.intro{align-items:flex-start!important;gap:12px!important;margin-top:4px!important}.intro>span{flex:0 0 45px;width:45px!important;height:45px!important}.intro h2,.title h2{font-size:24px!important}.intro p{font-size:14px!important}.ask textarea{font-size:16px;height:120px!important;padding:17px!important}.ask>div{gap:8px!important}.ask>div small{font-size:10px}.ask button,.primary,.lesson>button{min-height:46px!important}.columns,.sourcecols{display:block!important}.columns>.card,.columns>.lesson,.sourcecols>.card{margin-bottom:14px}.card,.lesson,.score{border-radius:14px!important;padding:20px!important}.topics{display:block!important}.topics button{width:100%;min-height:48px;margin-bottom:8px}.title{display:block!important}.title>button{min-height:44px;margin-top:12px}.student-add{display:block!important}.student-add input{width:100%;min-height:48px}.student-add button{min-height:48px;margin-top:8px!important}.student-list>div{grid-template-columns:36px minmax(0,1fr) auto!important;gap:8px!important}.student-list b{text-overflow:ellipsis;overflow:hidden}.lesson-output{margin-top:14px!important}.lesson-result{border-radius:14px!important;padding:18px 15px!important}.lesson-result-head{margin-bottom:20px!important;padding-bottom:17px!important;display:block!important}.lesson-result-head h2{overflow-wrap:anywhere;font-size:27px!important}.lesson-actions{margin-top:14px;align-items:stretch!important}.lesson-actions mark{text-align:center}.lesson-actions button{width:100%;min-height:48px;font-size:15px}.speech-controls{grid-template-columns:1fr 1fr;display:grid}.lesson-definition{gap:11px!important;padding:15px!important}.lesson-section-title{margin:27px 0 15px!important}.lesson-section-title h3,.lesson-result>section>h3{font-size:20px!important}.lesson-result p{max-width:none!important;font-size:15px!important;line-height:1.72!important}.concept-figure{padding:15px!important}.concept-figure>div{display:grid!important;overflow:visible!important}.concept-figure>div>span{justify-items:center;gap:4px!important;display:grid!important}.concept-figure b{width:100%;max-width:none!important;min-height:48px!important}.concept-figure i{height:24px;line-height:24px;transform:rotate(90deg)}.lesson-images>div{grid-template-columns:1fr}.lesson-images img{height:220px}.lesson-concepts>div:last-child,.lesson-examples>div:last-child{display:block!important}.lesson-concepts article,.lesson-examples article{margin-bottom:9px}.lesson-references>a{align-items:flex-start!important}.lesson-references>a b{overflow-wrap:anywhere}.lesson-references>a small{white-space:nowrap}.lesson-source-downloads a{grid-template-columns:38px minmax(0,1fr);padding:12px}.lesson-source-downloads a>span{grid-row:1/3;width:38px;height:38px}.lesson-source-downloads a small{white-space:normal;grid-column:2}.activity-head{display:block!important}.activity-head h2{font-size:27px!important}.activity-head>a{text-align:center;min-height:46px;margin-top:14px;display:block}.activity-frame{aspect-ratio:4/5;border-radius:12px;min-height:0!important}.activity-note{text-align:left}.activity-levels{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.activity-levels button{text-align:center;padding:12px 8px;display:block}.activity-levels span{margin:0 auto 7px}.activity-levels small{margin-top:4px;display:block}.activity-cards{grid-template-columns:1fr}.activity-cards>button{grid-template-columns:42px 1fr auto;padding:14px}.activity-admin-grid{grid-template-columns:1fr}.activity-admin-form input,.activity-admin-form select,.activity-admin-form textarea{min-height:46px;font-size:16px}}.login-credit{justify-items:center;gap:5px;margin-top:15px;display:grid}.login-credit a{color:#52746b;font-size:12px;text-decoration:none}.login-credit a:hover{text-decoration:underline}.login-credit span{color:#8b9b97;letter-spacing:1px;font-size:11px}.login-credit+.secure{margin-top:12px}.practice-topics{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.practice-topics>button{text-align:left;color:#294c43;cursor:pointer;background:#fff;border:1px solid #dbe6e2;border-radius:16px;grid-template-columns:46px 1fr auto;align-items:center;gap:14px;padding:18px;display:grid}.practice-topics>button:hover{border-color:#78b7a6;box-shadow:0 10px 28px #153c3015}.practice-topics span{color:#177461;background:#e6f5ef;border-radius:50%;place-items:center;width:46px;height:46px;font-weight:700;display:grid}.practice-topics div{gap:4px;display:grid}.practice-topics small{color:#23856e}.practice-topics p{color:#71857f;margin:0}.practice-topics i{font-size:22px;font-style:normal}.practice-frame{aspect-ratio:4/5;min-height:700px}.form-help{color:#71857f;line-height:1.5}.activity-admin-list>div.is-hidden{opacity:.62;background:#f5f5f3}.activity-admin-list>div:has(button+button){grid-template-columns:38px 1fr auto auto}.activity-admin-list>div:has(button+button)>button:first-of-type{color:#17614f;background:#edf5f2}.test-form-sticky{align-self:start;position:sticky;top:20px}.test-list-card{min-width:0}.test-list-heading{justify-content:space-between;align-items:flex-start;gap:14px;display:flex}.test-list-heading h3{margin:0 0 4px}.test-list-heading small{color:#71857f}.test-filters{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.test-filters select{color:#294c43;background:#fff;border:1px solid #d7e2de;border-radius:8px;max-width:170px;padding:9px}.test-scroll-list{scrollbar-color:#aac8be transparent;max-height:650px;padding-right:5px;overflow-y:auto}.test-scroll-list>div>div{min-width:0}.test-scroll-list>div>div>b{-webkit-line-clamp:2;overflow-wrap:anywhere;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.test-scroll-list>div>div>small{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.test-pagination{border-top:1px solid #e0e8e5;justify-content:center;align-items:center;gap:12px;margin-top:14px;padding-top:14px;display:flex}.test-pagination button{color:#17614f;cursor:pointer;background:#f6faf8;border:1px solid #d7e2de;border-radius:8px;padding:8px 11px}.test-pagination button:disabled{opacity:.45;cursor:not-allowed}.test-pagination span{color:#71857f;font-size:12px}.practice-launch{text-align:center;background:#fff;border:1px solid #d6e5df;border-radius:20px;max-width:720px;margin:18px auto;padding:clamp(25px,5vw,50px);box-shadow:0 15px 40px #153c3012}.practice-launch>span{color:#177461;background:#e3f4ed;border-radius:50%;place-items:center;width:62px;height:62px;margin:0 auto 18px;font-size:28px;font-weight:700;display:grid}.practice-launch em{letter-spacing:2px;color:#23856e;font-size:10px;font-style:normal;font-weight:700}.practice-launch h2{margin:10px 0}.practice-launch>p{color:#6e817c;line-height:1.6}.practice-result-note{text-align:left;background:#f1f8f5;border-left:4px solid #23856e;border-radius:10px;gap:6px;margin:24px 0;padding:15px;display:grid}.practice-result-note small{color:#5e756f;line-height:1.55}.practice-launch>a{color:#fff;background:#177461;border-radius:10px;padding:14px 18px;font-weight:700;text-decoration:none;display:block}@media (width<=600px){.practice-topics{grid-template-columns:1fr}.practice-topics>button{grid-template-columns:42px 1fr auto;padding:14px}.practice-frame{min-height:620px!important}.activity-admin-list>div:has(button+button){grid-template-columns:38px 1fr}.activity-admin-list>div:has(button+button)>button{grid-row:2;margin-top:4px}.test-form-sticky{position:static}.test-list-heading{display:block}.test-filters{grid-template-columns:1fr;margin-top:12px;display:grid}.test-filters select{width:100%;max-width:none;min-height:46px;font-size:16px}.test-scroll-list{max-height:560px}.test-pagination{justify-content:space-between}}.answer p{white-space:pre-line}.question-status{color:#17614f;background:#f1f8f5;border:1px solid #cfe3dc;border-radius:12px;margin-top:18px;padding:16px 18px;line-height:1.5}.ask button:disabled{opacity:.6;cursor:not-allowed}.login-side{background:linear-gradient(145deg,#f7faf8 0%,#edf6f2 55%,#eef2f8 100%);position:relative;overflow:hidden}.login-side:before,.login-side:after{content:"";filter:blur(2px);pointer-events:none;border-radius:50%;position:absolute}.login-side:before{background:radial-gradient(circle,#50b99a2b,#0000 68%);width:320px;height:320px;top:-110px;right:-145px}.login-side:after{background:radial-gradient(circle,#455f9b1f,#0000 68%);width:260px;height:260px;bottom:-90px;left:-120px}.login-card{z-index:1;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:linear-gradient(150deg,#fffe,#ffffffd9);border:1px solid #fffc;border-radius:28px;padding:38px;position:relative;box-shadow:0 30px 90px #123d3422,0 0 0 1px #c9ded64d}.login-logo{color:#fff;background:linear-gradient(145deg,#176f5d,#253f79);transform:rotate(-4deg);box-shadow:0 10px 28px #17614f36}.login-eyebrow{color:#27745f;letter-spacing:1.8px;margin-top:20px;font-size:10px;font-weight:800;display:block}.login-card h2{margin:8px 0 6px;font-size:32px}.role-switch{background:#edf4f1;border:1px solid #dce8e3;border-radius:14px;padding:5px}.role-switch button{border-radius:10px;justify-content:center;align-items:center;gap:7px;min-height:43px;font-weight:700;display:flex}.role-switch button span{font-size:12px}.role-switch button.active{color:#17614f;box-shadow:0 7px 20px #163f3417}.login-card input{background:#fbfdfc;border-radius:12px;min-height:49px;font-size:15px}.login-submit{letter-spacing:.2px;background:linear-gradient(100deg,#176f5d,#226e8b);border-radius:12px;min-height:50px;font-weight:800;transition:transform .2s,box-shadow .2s;box-shadow:0 12px 26px #17614f30}.login-submit:hover{transform:translateY(-2px);box-shadow:0 16px 32px #17614f38}.student-brand-mark{flex:none;width:42px;box-shadow:inset 0 0 18px #82dfc51c;color:#bff6e6!important;background:linear-gradient(145deg,#24695a,#173f37)!important;border:1px solid #5f9588!important;border-radius:14px!important;place-items:center!important;height:42px!important;font-size:18px!important;display:grid!important}.shell:not(.teacher)>aside{background:linear-gradient(#123d34 0%,#10352f 60%,#182f45 100%)}.shell:not(.teacher)>aside nav button{transition:transform .18s,background .18s}.shell:not(.teacher)>aside nav button:hover{transform:translate(3px)}.shell:not(.teacher)>aside nav button.active{box-shadow:0 8px 24px #071d1830}.student-header-tools{align-items:center;gap:13px;display:flex}.student-header-tools>span{color:#5a746d;background:#edf7f3;border:1px solid #d5e9e2;border-radius:18px;align-items:center;gap:7px;padding:8px 11px;font-size:11px;display:flex}.student-header-tools i{background:#38ad82;border-radius:50%;width:7px;height:7px;box-shadow:0 0 0 4px #38ad8218}.shell:not(.teacher)>.work{background:radial-gradient(circle at 92% 4%,#b8eadb26,#0000 26%),#f7f5ef}.student-welcome{background:linear-gradient(125deg,#fff 0%,#f0faf6 62%,#edf2fa 100%);border:1px solid #cfe4dc;border-radius:22px;margin-top:0;padding:26px 28px;position:relative;overflow:hidden;box-shadow:0 18px 50px #153c3010}.student-welcome>span{color:#fff;background:linear-gradient(145deg,#1b8068,#36518e);border:0;box-shadow:0 12px 28px #1b725d36}.student-welcome em{letter-spacing:2px;color:#27816a;font-size:9px;font-style:normal;font-weight:800}.student-welcome h2{margin:7px 0 5px}.science-orbit{border:1px solid #66aa972e;border-radius:50%;width:82px;height:82px;animation:5s ease-in-out infinite bioFloat;position:absolute;right:28px}.science-orbit:before,.science-orbit:after{content:"";border:1px solid #3d5f9829;border-radius:50%;position:absolute;inset:14px;transform:rotate(55deg)}.science-orbit:after{transform:rotate(-55deg)}.science-orbit i{background:#278b70;border-radius:50%;width:7px;height:7px;position:absolute}.science-orbit i:first-child{top:36px;left:7px}.science-orbit i:nth-child(2){background:#3f5e9a;top:17px;right:12px}.science-orbit i:nth-child(3){background:#d26760;bottom:9px;right:18px}@keyframes bioFloat{50%{transform:translateY(-5px)rotate(4deg)}}.shell:not(.teacher) .ask{border-color:#d4e5df;box-shadow:0 14px 44px #123d3411}.shell:not(.teacher) .ask button{background:linear-gradient(100deg,#177461,#2c668c);font-weight:700}.shell:not(.teacher) .chips button{transition:transform .16s,border-color .16s}.shell:not(.teacher) .chips button:hover{border-color:#71ad9b;transform:translateY(-2px)}@media (width<=760px){.login-card{border-radius:20px;padding:26px 21px}.login-card h2{font-size:28px}.student-header-tools>span{display:none}.student-welcome{align-items:flex-start;padding:21px 20px}.science-orbit{display:none}.student-welcome h2{font-size:26px}.shell:not(.teacher)>.work header{padding-inline:20px}}@media (prefers-reduced-motion:reduce){.science-orbit{animation:none}.login-submit,.shell:not(.teacher)>aside nav button,.shell:not(.teacher) .chips button{transition:none}}.question-mascot{color:#244b42;background:#fff;border:1px solid #d7e8e2;border-radius:18px 18px 4px;align-items:center;gap:13px;width:max-content;max-width:100%;margin:0 0 12px auto;padding:10px 14px 10px 10px;transition:background .2s,border-color .2s;display:flex;box-shadow:0 9px 26px #163f3410}.question-mascot>span{transform-origin:50%;background:#edf8f4;border-radius:14px;place-items:center;width:43px;height:43px;font-size:25px;display:grid}.question-mascot div{gap:3px;display:grid}.question-mascot b{font-size:12px}.question-mascot small{color:#71857f;font-size:10px}.question-mascot.thinking{background:#fffaf0;border-color:#eadcb8}.question-mascot.thinking>span{background:#fff1c9;animation:1.1s ease-in-out infinite mascotThink}.question-mascot.happy{background:#f1fbf6;border-color:#bfe4d2}.question-mascot.happy>span{background:#dff5e9;animation:.55s ease-out mascotHappy}.question-mascot.prompting>span{animation:1.8s ease-in-out infinite mascotPoint}@keyframes mascotThink{50%{transform:rotate(-8deg)scale(1.06)}}@keyframes mascotHappy{40%{transform:translateY(-5px)scale(1.08)}}@keyframes mascotPoint{50%{transform:translateY(3px)}}@media (width<=600px){.question-mascot{border-radius:16px 16px 16px 4px;margin-left:0}.question-mascot>span{width:40px;height:40px;font-size:23px}}@media (prefers-reduced-motion:reduce){.question-mascot>span{animation:none!important}}.world-view{width:100%}.world-hero{--world-color:#177461;color:#fff;background:linear-gradient(125deg,var(--world-color),#102f34);border-radius:24px;align-items:center;gap:24px;margin-bottom:26px;padding:30px;display:flex;position:relative;overflow:hidden;box-shadow:0 18px 45px #123d3424}.world-hero:after{content:"";border:40px solid #ffffff0c;border-radius:50%;width:210px;height:210px;position:absolute;top:-90px;right:-55px}.world-hero>span{background:#ffffff1c;border-radius:22px;flex:0 0 78px;place-items:center;width:78px;height:78px;font-size:36px;display:grid}.world-hero em{letter-spacing:2.4px;color:#d4eee7;font-size:10px;font-style:normal;font-weight:700}.world-hero h2{margin:7px 0;font-size:38px}.world-hero p{color:#d7e9e5;max-width:690px;margin:0;line-height:1.65}.world-hero.compact{padding:23px}.world-hero.compact h2{font-size:31px}.world-category-grid,.world-resource-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;display:grid}.world-category-card,.world-resource-card{border:1px solid var(--line);text-align:left;cursor:pointer;background:#fff;border-radius:18px;padding:20px;transition:transform .2s,box-shadow .2s;box-shadow:0 8px 25px #143f3310}.world-category-card:hover,.world-resource-card:hover{transform:translateY(-3px);box-shadow:0 15px 35px #143f3320}.world-category-card{border-top:4px solid var(--world-color);grid-template-columns:55px 1fr auto;align-items:center;gap:15px;display:grid}.world-category-card>span{background:var(--world-color);border-radius:16px;width:55px;height:55px}@supports (color:color-mix(in lab, red, red)){.world-category-card>span{background:color-mix(in srgb,var(--world-color) 13%,white)}}.world-category-card>span{place-items:center;font-size:27px;display:grid}.world-category-card h3,.world-category-card p,.world-resource-card h3,.world-resource-card p{margin:0}.world-category-card p{color:var(--muted);margin-top:5px;font-size:12px}.world-category-card i{color:var(--world-color);font-size:22px;font-style:normal}.world-resource-card{gap:16px;min-height:155px;display:flex}.world-resource-card>span,.world-resource-admin>div>span{color:#177461;background:#e9f5f0;border-radius:8px;height:max-content;padding:8px;font-size:9px;font-weight:800}.world-resource-card h3{font:22px Georgia,serif}.world-resource-card p{color:var(--muted);margin:9px 0;line-height:1.5}.world-resource-card small{color:#177461;font-weight:700}.world-empty{text-align:center;color:var(--muted);background:#f5faf8;border:1px dashed #a9c9bf;border-radius:18px;padding:55px 25px}.world-empty>span{font-size:32px}.world-reader-head{justify-content:space-between;align-items:end;gap:20px;margin:20px 0;display:flex}.world-reader-head em{color:#177461;letter-spacing:1.5px;font-size:11px;font-style:normal;font-weight:800}.world-reader-head p{color:var(--muted);margin:0}.world-reader-head>div:last-child{gap:8px;display:flex}.world-reader-head a{color:#fff;white-space:nowrap;background:#177461;border-radius:9px;padding:11px 14px;font-size:12px;text-decoration:none}.world-reader-head a+a{color:#17614f;background:#e7f4ef}.world-reader-frame{aspect-ratio:16/9;background:#26332f;border-radius:18px;width:100%;overflow:hidden;box-shadow:0 18px 45px #102f3428}.world-reader-frame iframe{border:0;width:100%;height:100%}.world-reader-frame.portrait{aspect-ratio:3/4;width:min(100%,720px);margin-inline:auto}.world-reader-frame.landscape{aspect-ratio:16/9}.world-orientation-note{display:none}.world-admin-grid{grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px;display:grid}.world-admin-form h3,.world-resource-admin h3{margin-top:0}.world-category-form{grid-template-columns:58px 1fr 48px auto;gap:8px;display:grid}.world-category-form input,.world-category-editor input,.world-resource-admin input,.world-resource-admin select,.world-admin-form input,.world-admin-form textarea{border:1px solid var(--line);background:#fff;border-radius:9px;width:100%;min-width:0;padding:11px}.world-category-form input[type=color],.world-category-editor input[type=color]{padding:3px}.world-admin-list{gap:9px;margin-top:22px;display:grid}.world-category-editor{border:1px solid var(--line);border-radius:11px;grid-template-columns:52px 1fr 45px auto auto auto;align-items:center;gap:7px;padding:9px;display:grid}.world-category-editor button,.world-resource-admin button{color:#17614f;cursor:pointer;background:#e7f4ef;border:0;border-radius:8px;padding:9px}.world-category-editor .danger,.world-resource-admin .danger{color:#984b40;background:#fff0ed}.world-check{white-space:nowrap;align-items:center;gap:5px!important;margin:0!important;display:flex!important}.world-check input{width:auto!important}.world-file{text-align:center;cursor:pointer;border:1.5px dashed #9fc5b9;border-radius:12px;padding:18px}.world-file input{display:none}.world-file span,.world-file small{display:block}.world-file span{color:#177461;font-weight:800}.world-file small{margin-top:6px}.world-resource-admin{gap:9px;display:grid}.world-resource-admin>div{border:1px solid var(--line);border-radius:11px;grid-template-columns:45px 1.15fr .75fr .65fr 1.35fr auto auto auto;align-items:center;gap:8px;padding:9px;display:grid}.world-resource-admin>h3{margin-bottom:6px}@media (width<=900px){.world-category-grid,.world-resource-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.world-admin-grid{grid-template-columns:1fr}.world-category-editor,.world-resource-admin>div{grid-template-columns:50px 1fr}.world-category-editor>:nth-child(n+3),.world-resource-admin>div>:nth-child(n+3){grid-column:auto}}@media (width<=620px){.world-hero{align-items:flex-start;padding:22px}.world-hero>span{flex-basis:55px;width:55px;height:55px;font-size:25px}.world-hero h2{font-size:28px}.world-hero p{font-size:13px}.world-category-grid,.world-resource-grid{grid-template-columns:1fr}.world-reader-head{flex-direction:column;align-items:flex-start}.world-reader-head>div:last-child{width:100%}.world-reader-head a{text-align:center;flex:1}.world-reader-frame{aspect-ratio:4/3;border-radius:12px}.world-reader-frame.portrait{aspect-ratio:3/4}.world-orientation-note{color:#7a8e88;background:#eef5f2;border-radius:8px;padding:9px;font-size:11px;display:block}.world-category-form{grid-template-columns:50px 1fr 45px}.world-category-form button{grid-column:1/-1}.world-category-editor,.world-resource-admin>div{grid-template-columns:1fr 1fr}.world-category-editor input:nth-child(2),.world-resource-admin>div>input:nth-child(2),.world-resource-admin>div>input:nth-child(4){grid-column:1/-1}}.world-resource-card{color:inherit;text-decoration:none}.login-seo{border-top:1px solid #bee1d73d;max-width:590px;margin-top:28px;padding-top:20px}.login-seo h2{color:#effbf7;margin:0 0 8px;font-size:15px;line-height:1.35}.login-seo p{color:#bed7d1;margin:0;font-size:13px;line-height:1.65}@media (width<=900px){.login-seo{margin-top:18px;padding-top:15px}.login-seo h2{font-size:14px}.login-seo p{font-size:12px}}.bios-logo{object-fit:contain;filter:drop-shadow(0 10px 24px #0000002e);width:152px;height:152px;margin:0 0 12px;display:block}.bios-name{letter-spacing:9px;color:#fff;text-shadow:0 2px 20px #00000059;font:800 clamp(34px,3.6vw,54px)/1 Arial,sans-serif;display:block}.bios-rule{background:#81d5bc;border-radius:3px;width:90px;height:3px;margin:17px 0 25px;display:block}.login-school-logo{object-fit:contain;filter:drop-shadow(0 6px 14px #13372e2e);width:84px;height:105px;margin:16px auto 6px;display:block}:root{--ink:#142a26;--muted:#6e817c;--green:#177461;--mint:#e7f4ef;--line:#dce6e1;--cream:#f7f5ef}*{box-sizing:border-box}body{background:var(--cream);color:var(--ink);margin:0;font-family:Arial,sans-serif}button,textarea,select{font:inherit}.shell{grid-template-columns:265px 1fr;min-height:100vh;display:grid}.shell>aside{color:#fff;background:#123d34;flex-direction:column;padding:28px 21px;display:flex}.brand{align-items:center;gap:12px;margin-bottom:40px;display:flex}.brand>span{color:#b9ddd4;border:1px solid #67998d;border-radius:14px;place-items:center;width:46px;height:46px;font-size:10px;display:grid}.brand b,.brand small{display:block}.brand b{font-size:20px}.brand small{color:#a9c7c0;margin-top:4px;font-size:10px}nav{gap:6px;display:grid}nav button{color:#bcd0cc;text-align:left;cursor:pointer;background:0 0;border:0;border-radius:10px;padding:13px}nav button.active,nav button:hover{color:#123d34;background:#f0f6f3}nav i{width:31px;font-size:18px;font-style:normal;display:inline-block}.priority{background:#1a4a40;border:1px solid #386a5f;border-radius:13px;gap:10px;margin-top:auto;padding:14px;display:flex}.priority>i{background:#6be0b8;border-radius:50%;width:9px;height:9px;box-shadow:0 0 0 4px #2b6658}.priority b,.priority small{font-size:11px;display:block}.priority small{color:#a9cbc3;margin-top:5px;line-height:1.5}.shell footer{color:#75a096;margin-top:18px;font-size:10px;line-height:1.6}.work header{border-bottom:1px solid var(--line);background:#fbfaf6;justify-content:space-between;align-items:center;height:103px;padding:22px 5vw;display:flex}.work em,.content>em{letter-spacing:2px;color:#789089;font-size:10px;font-style:normal;font-weight:700}.work header h1{margin:6px 0;font:25px Georgia,serif}.avatar{color:#17614f;background:#dceee7;border-radius:50%;place-items:center;width:39px;height:39px;font-size:12px;font-weight:700;display:grid}.content{max-width:1230px;margin:auto;padding:45px 5vw}.narrow{max-width:930px}.intro{align-items:center;gap:18px;margin:13px 0 28px;display:flex}.intro>span{background:var(--mint);width:60px;height:60px;color:var(--green);border:1px solid #add0c5;border-radius:50%;place-items:center;font-size:22px;display:grid}h2{margin:0 0 9px;font:30px Georgia,serif}.intro p,.title p{color:var(--muted);margin:0;line-height:1.6}.ask,.card,.lesson,.answer,.score{border:1px solid var(--line);background:#fff;border-radius:17px;box-shadow:0 8px 28px #153c3010}.ask textarea{resize:none;border:0;border-radius:17px 17px 0 0;outline:none;width:100%;height:140px;padding:24px}.ask>div{border-top:1px solid #edf1ef;justify-content:space-between;align-items:center;padding:12px 15px 12px 21px;display:flex}.ask small{color:#82948f}.ask button,.primary,.lesson>button{background:var(--green);color:#fff;cursor:pointer;border:0;border-radius:9px;padding:11px 18px}.chips{flex-wrap:wrap;align-items:center;gap:8px;margin-top:22px;display:flex}.chips small{color:#84948f;margin-right:5px}.chips button,.title>button{border:1px solid var(--line);color:#4f6660;background:#fbfaf7;border-radius:19px;padding:8px 12px}.answer{margin-top:20px;padding:22px}.answer>div{justify-content:space-between;display:flex}.answer mark,.cardhead mark{background:var(--mint);color:var(--green);border-radius:15px;padding:6px 9px;font-size:10px}.answer p{color:#415a54;line-height:1.75}.answer>small{border-top:1px solid var(--line);color:#788a85;padding-top:12px;display:block}.columns,.sourcecols{grid-template-columns:1.6fr .8fr;gap:22px;display:grid}.card,.lesson,.score{padding:29px}.card label{color:var(--muted);gap:8px;margin:25px 0 18px;font-size:12px;display:grid}.card select{border:1px solid var(--line);background:#fff;border-radius:9px;padding:12px}.topics{grid-template-columns:1fr 1fr;gap:9px;display:grid}.topics button{border:1px solid var(--line);text-align:left;color:#48615b;background:#fafbf9;border-radius:9px;justify-content:space-between;padding:14px;display:flex}.topics button.chosen{background:var(--mint);color:#145d4c;border-color:#65ad98}.lesson{color:#fff;background:#173f36}.lesson>small{background:#2e6659;border-radius:12px;padding:7px 9px}.lesson h2{margin-top:26px}.lesson p{color:#bad2cc;line-height:1.6}.steps{gap:8px;margin:22px 0;display:grid}.steps span{background:#205046;border:1px solid #3e7166;border-radius:8px;padding:10px}.lesson>button{color:#174a3e;background:#e7f4ef;width:100%}.meta{color:var(--muted);justify-content:space-between;font-size:12px;display:flex}.bar{background:#e5eeea;border-radius:5px;height:5px;margin:16px 0 28px}.bar i{background:#2b9a79;width:10%;height:100%;display:block}.quiz h2{font-size:24px;line-height:1.4}.quiz>button:not(.primary){border:1px solid var(--line);text-align:left;background:#fbfcfa;border-radius:9px;width:100%;margin:5px 0;padding:12px}.quiz>button.selected{background:var(--mint);border-color:var(--green)}.quiz>button b{background:#edf3f0;border-radius:6px;place-items:center;width:27px;height:27px;margin-right:10px;display:inline-grid}.primary{float:right;margin-top:16px}.score{text-align:center;height:max-content}.score h2{margin:9px}.score>div{border:10px solid #d7eee5;border-top-color:#219374;border-radius:50%;place-items:center;width:100px;height:100px;margin:20px auto;font-weight:700;display:grid}.score p{color:var(--muted);font-size:12px}.title{justify-content:space-between;align-items:end;margin-bottom:26px;display:flex}.resources{gap:11px;display:grid}.resources article,.file{border:1px solid var(--line);background:#fff;border-radius:12px;align-items:center;gap:15px;padding:15px;display:flex}.resources article>span{background:var(--mint);width:43px;height:43px;color:var(--green);border-radius:11px;place-items:center;font:22px Georgia,serif;display:grid}.resources h3,.resources p{margin:0 0 5px}.resources p{color:var(--muted);font-size:13px}.resources small{color:#258e6e}.resources article button,.file button{background:#eef4f1;border:0;border-radius:50%;width:34px;height:34px;margin-left:auto}.sourcecols{grid-template-columns:1fr 1fr}.cardhead{justify-content:space-between;align-items:start;margin-bottom:16px;display:flex}.cardhead h3{margin:0 0 5px}.cardhead small{color:var(--muted)}.file{margin:8px 0;padding:11px}.file>span{background:var(--mint);width:42px;color:var(--green);text-align:center;border-radius:7px;padding:11px 3px;font-size:8px;font-weight:700}.file div{min-width:0}.file b,.file small{white-space:nowrap;text-overflow:ellipsis;font-size:12px;display:block;overflow:hidden}.file small{color:var(--muted);margin-top:4px;font-size:10px}.file i{color:#299472;margin-left:auto}.drop{cursor:pointer;background:#f7fbf9;border-radius:12px;justify-content:center;align-items:center;min-height:155px;border:1.5px dashed #9fc5b9!important;margin:0!important;display:flex!important}.drop input{display:none}.drop b{color:var(--green);font-size:25px}.drop strong{color:#345b51}.drop small{font-size:10px}@media (width<=850px){.shell{grid-template-columns:1fr}.shell>aside{padding:17px}.brand{margin-bottom:13px}nav{display:flex;overflow:auto}nav button{white-space:nowrap}.priority,.shell footer{display:none}.work header{height:82px}.content{padding:28px 19px}.columns,.sourcecols,.topics{grid-template-columns:1fr}}.logout{border:1px solid var(--line);color:#526a64;cursor:pointer;background:#fff;border-radius:9px;padding:9px 15px}.privacy-note{color:#27594d;background:#edf7f3;border:1px solid #cfe6de;border-radius:11px;gap:12px;margin-bottom:18px;padding:14px;display:flex}.privacy-note b,.privacy-note small{display:block}.privacy-note small{color:#68817a;margin-top:4px}.login-page{background:#fbfaf6;grid-template-columns:1.08fr .92fr;min-height:100vh;display:grid}.login-brand{color:#fff;background:linear-gradient(145deg,#0d392f,#17614f);align-items:center;padding:8vw;display:flex;position:relative;overflow:hidden}.login-brand:after{content:"✦";color:#ffffff08;font-size:420px;position:absolute;bottom:-100px;right:-50px}.login-copy{z-index:1;max-width:590px;position:relative}.login-dna{color:#bce1d7;border:1px solid #74a99c;border-radius:18px;place-items:center;width:62px;height:62px;margin-bottom:50px;font-size:11px;display:grid}.login-copy em{letter-spacing:3px;color:#9fc9bf;font-size:11px;font-style:normal}.login-copy h1{margin:17px 0;font:52px/1.08 Georgia,serif}.login-copy p{color:#bed7d1;font-size:17px;line-height:1.7}.login-points{color:#d7ebe6;gap:11px;margin-top:34px;font-size:13px;display:grid}.login-side{place-items:center;padding:35px;display:grid}.login-card{border:1px solid var(--line);background:#fff;border-radius:22px;width:min(410px,100%);padding:36px;box-shadow:0 25px 70px #123d3417}.login-logo{background:var(--mint);width:48px;height:48px;color:var(--green);border-radius:14px;place-items:center;font-size:21px;display:grid}.login-card h2{margin:22px 0 7px}.login-card>p{color:var(--muted);margin-bottom:25px}.role-switch{background:#eef3f1;border-radius:10px;grid-template-columns:1fr 1fr;margin-bottom:22px;padding:4px;display:grid}.role-switch button{color:#667c76;background:0 0;border:0;border-radius:8px;padding:10px}.role-switch button.active{color:var(--green);background:#fff;box-shadow:0 2px 8px #173e3410}.login-card label{color:#536963;gap:8px;margin:14px 0;font-size:12px;display:grid}.login-card input,.student-add input{border:1px solid var(--line);border-radius:9px;outline:none;padding:13px}.login-card input:focus,.student-add input:focus{border-color:#4c9b85}.login-card label small{color:#8b9b97;line-height:1.5}.login-submit,.student-add button{background:var(--green);color:#fff;cursor:pointer;border:0;border-radius:9px;width:100%;margin-top:8px;padding:13px}.secure{text-align:center;color:#8b9b97;margin-top:16px;display:block}.login-error{color:#9b4336;background:#fff0ed;border-radius:8px;padding:10px;font-size:12px}.student-add{grid-template-columns:1fr 180px;gap:10px;margin-bottom:23px;display:grid}.student-add button{margin:0}.student-list{gap:8px;display:grid}.student-list>div{border:1px solid var(--line);border-radius:10px;grid-template-columns:38px 1fr 1fr auto;align-items:center;gap:12px;padding:11px;display:grid}.student-list>div>span{background:var(--mint);width:36px;height:36px;color:var(--green);border-radius:50%;place-items:center;display:grid}.student-list small{color:#79908a}.student-list button{color:#984b40;background:#fff0ed;border:0;border-radius:7px;padding:7px 10px}.teacher .work{background:#f7f5ef}@media (width<=760px){.login-page{grid-template-columns:1fr}.login-brand{padding:40px 25px}.login-dna{margin-bottom:25px}.login-copy h1{font-size:35px}.login-points{display:none}.login-side{padding:22px}.student-add{grid-template-columns:1fr}.student-list>div{grid-template-columns:38px 1fr auto}.student-list small{display:none}}.source-classification{grid-template-columns:1fr 1fr 1.4fr;gap:10px;margin:18px 0;display:grid}.source-classification label{margin:0}.source-classification input,.source-editor-fields input,.source-editor-fields select{border:1px solid var(--line);color:#294c43;background:#fff;border-radius:9px;width:100%;padding:11px}.source-editor{border:1px solid var(--line);background:#fbfcfa;border-radius:13px;margin-top:12px;padding:10px}.source-editor .file{border:0;margin:0;padding:5px}.source-editor-fields{grid-template-columns:1fr 1fr 1.5fr auto;gap:8px;margin-top:8px;display:grid}.source-editor-fields button{background:var(--green);color:#fff;cursor:pointer;border:0;border-radius:8px;padding:9px 13px}@media (width<=700px){.source-classification,.source-editor-fields{grid-template-columns:1fr}.source-classification input,.source-classification select,.source-editor-fields input,.source-editor-fields select,.source-editor-fields button{min-height:46px;font-size:16px}}.science-intro{color:#fff;background:radial-gradient(circle at 28% 46%,#246d5b 0,#123f35 28%,#082a24 68%,#061f1b 100%);grid-template-columns:1fr 1fr;align-items:center;gap:clamp(30px,7vw,110px);min-height:100vh;padding:clamp(32px,7vw,110px);display:grid;position:relative;overflow:hidden}.science-intro:before{content:"";opacity:.08;background-image:radial-gradient(#b7f3d4 1px,#0000 1px);background-size:34px 34px;animation:5s linear infinite scienceDrift;position:absolute;inset:0}.science-intro-field{aspect-ratio:1;place-items:center;width:min(52vw,430px);margin:auto;display:grid;position:relative}.science-core{z-index:2;text-align:center;color:#0d483c;background:radial-gradient(circle at 35% 30%,#ecfff7,#9de5c7 35%,#38a87d 72%,#17705a);border-radius:50%;place-content:center;width:150px;height:150px;animation:1.5s ease-in-out infinite sciencePulse;display:grid;position:relative;box-shadow:0 0 0 13px #d6ffed12,0 0 70px #74e2b45c}.science-core b{letter-spacing:4px;font:800 25px/1 Arial,sans-serif}.science-core small{letter-spacing:3px;margin-top:8px;font-size:8px}.science-orbit{border:1px solid #a1e5c66b;border-radius:50%;animation:3.2s linear infinite scienceSpin;position:absolute}.science-orbit-one{width:78%;height:78%;transform:rotate(-18deg)}.science-orbit-two{width:100%;height:52%;animation-duration:4.4s;animation-direction:reverse}.science-orbit i{background:#c4f5df;border-radius:50%;width:15px;height:15px;position:absolute;box-shadow:0 0 20px #86e9bd}.science-orbit-one i:first-child{top:20%;left:9%}.science-orbit-one i:nth-child(2){background:#ffb277;top:48%;right:2%;box-shadow:0 0 22px #ff986e}.science-orbit-one i:nth-child(3){width:10px;height:10px;bottom:-7px;left:42%}.science-orbit-two i:first-child{top:45%;left:-7px}.science-orbit-two i:nth-child(2){width:9px;height:9px;top:8%;right:10%}.science-intro-copy{z-index:2;max-width:560px;position:relative}.science-intro-copy>span{letter-spacing:4px;color:#8ee0bd;font-size:10px;font-weight:800}.science-intro h1{letter-spacing:-2px;margin:16px 0 18px;font:clamp(40px,5.2vw,72px)/1.04 Georgia,serif}.science-intro-copy p{color:#b9d7ce;font-size:15px}.science-progress{background:#ffffff1c;border-radius:4px;width:min(100%,330px);height:3px;margin-top:32px;overflow:hidden}.science-progress i{background:#83e2b9;height:100%;animation:2.7s ease-out forwards scienceLoad;display:block}.science-intro>button{z-index:3;color:#d9ede7;cursor:pointer;background:#ffffff0c;border:1px solid #ffffff38;border-radius:22px;padding:9px 16px;position:absolute;top:25px;right:28px}.science-intro>button:hover{background:#ffffff1c}@keyframes scienceSpin{to{transform:rotate(342deg)}}@keyframes sciencePulse{50%{transform:scale(1.05);box-shadow:0 0 0 20px #d6ffed0b,0 0 90px #74e2b475}}@keyframes scienceLoad{0%{width:0}to{width:100%}}@keyframes scienceDrift{to{background-position:34px 34px}}@media (width<=720px){.science-intro{text-align:center;grid-template-columns:1fr;align-content:center;gap:15px;padding:65px 24px}.science-intro-field{width:min(82vw,340px)}.science-core{width:125px;height:125px}.science-intro h1{font-size:42px}.science-progress{margin-left:auto;margin-right:auto}}@media (prefers-reduced-motion:reduce){.science-intro:before,.science-core,.science-orbit,.science-progress i{animation-duration:.01ms!important;animation-iteration-count:1!important}}.student-bulk{background:#f7fbf9;border:1px solid #cfe3dc;border-radius:12px;grid-template-columns:minmax(180px,.8fr) minmax(240px,1.3fr) 160px;align-items:center;gap:12px;margin:0 0 22px;padding:16px;display:grid}.student-bulk b,.student-bulk small{display:block}.student-bulk small{color:var(--muted);margin-top:5px;font-size:11px;line-height:1.5}.student-bulk textarea{resize:vertical;border:1px solid var(--line);background:#fff;border-radius:9px;outline:none;min-height:92px;padding:12px}.student-bulk textarea:focus{border-color:#4c9b85}.student-bulk button{background:var(--green);color:#fff;cursor:pointer;border:0;border-radius:9px;padding:13px}.student-bulk button:disabled{opacity:.45;cursor:not-allowed}@media (width<=760px){.student-bulk{grid-template-columns:1fr}.student-bulk button{width:100%}}.drive-hero{color:#fff;background:linear-gradient(135deg,#133f36,#1d745f);border-radius:18px;align-items:center;gap:18px;margin-bottom:22px;padding:26px;display:flex}.drive-hero>span{background:#ffffff18;border-radius:16px;place-items:center;width:58px;height:58px;font-size:24px;display:grid}.drive-hero h2,.drive-hero p{margin:4px 0}.drive-hero p{color:#c4ddd6}.drive-level{max-width:280px;color:var(--muted);gap:7px;margin-bottom:22px;font-size:12px;display:grid}.drive-level select,.drive-admin-form input,.drive-admin-form select,.drive-admin-form textarea{border:1px solid var(--line);background:#fff;border-radius:9px;padding:12px}.drive-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:15px;display:grid}.drive-grid article{border:1px solid var(--line);background:#fff;border-radius:15px;gap:15px;padding:19px;display:flex}.drive-grid article>span{width:45px;height:45px;color:var(--green);background:#e9f4ef;border-radius:12px;flex:none;place-items:center;display:grid}.drive-grid h3{margin:5px 0}.drive-grid p{color:var(--muted);line-height:1.5}.drive-grid article div div{flex-wrap:wrap;gap:8px;display:flex}.drive-grid button,.drive-grid a,.drive-player a{background:var(--green);color:#fff;cursor:pointer;border:0;border-radius:8px;padding:9px 12px;font-size:12px;text-decoration:none}.drive-grid a,.drive-player a{color:#285b4e;background:#eef4f1}.drive-player{border:1px solid var(--line);background:#fff;border-radius:16px;margin-bottom:20px;padding:16px}.drive-player>div{justify-content:space-between;align-items:center;display:flex}.drive-player>div button{background:#eef4f1;border:0;border-radius:8px;padding:8px}.drive-player iframe{aspect-ratio:16/9;background:#122e28;border:0;border-radius:11px;width:100%;margin:10px 0}.drive-admin-grid{grid-template-columns:.85fr 1.15fr;gap:20px;display:grid}.drive-admin-form label{margin:14px 0}.drive-admin-form input,.drive-admin-form select,.drive-admin-form textarea{width:100%}.drive-admin-list>div{border-top:1px solid var(--line);grid-template-columns:38px minmax(0,1fr) auto auto auto;align-items:center;gap:9px;padding:12px 0;display:grid}.drive-admin-list>div>span{background:var(--mint);width:35px;height:35px;color:var(--green);border-radius:9px;place-items:center;display:grid}.drive-admin-list b,.drive-admin-list small{display:block}.drive-admin-list small{color:var(--muted);margin-top:4px}.drive-admin-list a,.drive-admin-list button{color:#285b4e;background:#eef4f1;border:0;border-radius:7px;padding:8px 10px;font-size:12px;text-decoration:none}.drive-admin-list .danger{color:#984b40;background:#fff0ed}@media (width<=800px){.drive-grid,.drive-admin-grid{grid-template-columns:1fr}.drive-admin-list>div{grid-template-columns:38px 1fr auto}.drive-admin-list>div a{display:none}.drive-player iframe{aspect-ratio:16/10}}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}.teacher-actions{align-items:center;gap:10px;display:flex}.teacher-actions>span,.title>mark{background:var(--mint);color:var(--green);border-radius:16px;padding:8px 11px;font-size:10px}.teacher-welcome{color:#fff;background:linear-gradient(120deg,#17473c,#216b59);border-radius:18px;justify-content:space-between;align-items:center;margin-bottom:19px;padding:28px 31px;display:flex}.teacher-welcome h2{margin:6px 0}.teacher-welcome p{color:#bad5ce;margin:0}.teacher-welcome button{color:#175342;background:#e5f4ee;border:0;border-radius:9px;padding:12px 15px}.stat-grid{grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:19px;display:grid}.stat-grid article{border:1px solid var(--line);background:#fff;border-radius:13px;grid-template-columns:38px 1fr;gap:3px 10px;padding:17px;display:grid}.stat-grid article>span{background:var(--mint);width:38px;height:38px;color:var(--green);border-radius:10px;grid-row:1/4;place-items:center;display:grid}.stat-grid small,.stat-grid b,.stat-grid em{display:block}.stat-grid small{color:var(--muted)}.stat-grid b{font:25px Georgia,serif}.stat-grid em{color:#3d8d75;font-size:9px;font-style:normal}.dashboard-grid{grid-template-columns:1.6fr .7fr;gap:17px;display:grid}.activity>div{border-top:1px solid var(--line);grid-template-columns:75px 1fr auto;align-items:center;gap:10px;padding:14px 0;display:grid}.activity p{color:#4d645e;margin:0;font-size:13px}.activity small{color:#899a96}.health{text-align:center}.health>div{border:9px solid #cce9df;border-top-color:var(--green);border-radius:50%;place-items:center;width:98px;height:98px;margin:19px auto;display:grid}.health>div b,.health>div small{grid-area:1/1}.health>div small{color:var(--muted);margin-top:31px}.health p{color:var(--muted);font-size:12px;line-height:1.5}.health button{color:var(--green);background:0 0;border:0}.settings-card{padding:24px}.flow{justify-items:center;display:grid}.flow>div{border:1px solid var(--line);border-radius:10px;align-items:center;gap:13px;width:100%;padding:14px;display:flex}.flow>div:first-child{background:#f1f8f5;border-color:#bdded4}.flow>div>b{color:#4c6e65;background:#e8f1ed;border-radius:8px;place-items:center;width:30px;height:30px;display:grid}.flow span{flex:1}.flow strong,.flow small,.setting b,.setting small{display:block}.flow small,.setting small{color:var(--muted);margin-top:4px}.flow mark{background:var(--mint);color:var(--green);border-radius:12px;padding:6px 8px;font-size:9px}.flow>i{color:#88a19a;padding:5px;font-style:normal}.setting{border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;padding:18px 3px;display:flex}.toggle{background:#ccd7d3;border:0;border-radius:14px;flex:none;width:44px;height:24px;padding:3px}.toggle i{background:#fff;border-radius:50%;width:18px;height:18px;display:block}.toggle.on{background:var(--green)}.toggle.on i{margin-left:20px}@media (width<=1000px){.stat-grid{grid-template-columns:1fr 1fr}.dashboard-grid{grid-template-columns:1fr}}@media (width<=650px){.teacher-welcome{flex-direction:column;align-items:start;gap:18px}.stat-grid{grid-template-columns:1fr}.activity>div{grid-template-columns:70px 1fr}.activity small,.teacher-actions>span{display:none}}.health>div{background:conic-gradient(var(--green) var(--health-progress),#cce9df 0);position:relative;border:0!important}.health>div:before{content:"";background:#fff;border-radius:50%;position:absolute;inset:9px}.health>div b,.health>div small{z-index:1;position:relative}.login-page{grid-template-columns:minmax(540px,1.15fr) minmax(420px,.85fr)}.login-brand{color:#fff;isolation:isolate;background-image:linear-gradient(90deg,#051f1af7 0%,#082f27d6 46%,#08342a40 100%),url(/biology-login-hero.png);background-position:50%;background-size:cover;padding:7vw}.login-brand:after{display:none}.biology-glow{z-index:-1;background:radial-gradient(circle at 78% 48%,#71ffc22b,#0000 28%);position:absolute;inset:0}.login-copy{max-width:650px}.login-dna{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#115142a6;border-color:#9ce0cc75;box-shadow:0 12px 35px #0003}.school-name{letter-spacing:4px;color:#fff;text-shadow:0 2px 20px #0000006b;font:700 clamp(27px,2.7vw,44px)/1.05 Georgia,serif;display:block}.school-rule{background:#81d5bc;border-radius:2px;width:90px;height:3px;margin:18px 0 25px;display:block}.login-copy h1{text-shadow:0 3px 28px #00000061;max-width:650px;font-size:clamp(38px,4vw,62px)}.login-copy p{color:#d4e9e3;max-width:560px}.login-points span{-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#0b3d3285;border:1px solid #9dd9c833;border-radius:18px;width:max-content;padding:9px 13px}.login-side{background:linear-gradient(155deg,#fbfaf6,#eff6f2)}.login-card{border-color:#d5e5df;box-shadow:0 28px 80px #0b352b26}.login-logo{position:relative;overflow:hidden}.login-logo:after{content:"";background:#68ad99;width:26px;height:1px;position:absolute;transform:rotate(55deg)}@media (width<=900px){.login-page{grid-template-columns:1fr}.login-brand{background-position:62%;min-height:48vh;padding:45px 28px}.login-copy{max-width:560px}.login-dna{margin-bottom:24px}.school-name{font-size:28px}.school-rule{margin:13px 0 18px}.login-copy h1{font-size:38px}.login-points{display:none}}.curriculum-empty{text-align:center;padding:60px 30px}.curriculum-empty>span{background:var(--mint);width:62px;height:62px;color:var(--green);border-radius:18px;place-items:center;margin:auto;font-size:25px;display:grid}.curriculum-empty h2{margin-top:20px}.curriculum-empty p{color:var(--muted)}.curriculum-layout{grid-template-columns:.8fr 1.2fr;gap:18px;display:grid}.curriculum-layout h3{margin:0 0 18px}.curriculum-add{grid-template-columns:1fr 135px;gap:8px;margin-bottom:18px;display:grid}.curriculum-add input{border:1px solid var(--line);border-radius:9px;outline:none;padding:12px}.curriculum-add input:focus{border-color:var(--green)}.curriculum-add button{background:var(--green);color:#fff;border:0;border-radius:9px}.level-list,.topic-list{gap:8px;display:grid}.level-list>div,.topic-list>div{border:1px solid var(--line);cursor:pointer;border-radius:9px;grid-template-columns:34px 1fr auto auto;align-items:center;gap:10px;padding:10px;display:grid}.level-list>div.active{background:var(--mint);border-color:#78b7a4}.level-list span,.topic-list span{width:31px;height:31px;color:var(--green);background:#eef4f1;border-radius:7px;place-items:center;display:grid}.level-list small{color:var(--muted)}.level-list button,.topic-list button{color:#984b40;background:#fff0ed;border:0;border-radius:7px;padding:7px 9px}.topic-list>div{grid-template-columns:34px 1fr auto auto}.topic-order{gap:5px;display:flex}.topic-list .topic-order button{width:34px;height:34px;color:var(--green);cursor:pointer;background:#e8f4ef;padding:0;font-size:17px}.topic-list .topic-order button:disabled{opacity:.35;cursor:default}.topic-list .topic-remove{color:#984b40;background:#fff0ed}.mini-empty{color:var(--muted);text-align:center;background:#f8fbfa;border-radius:9px;cursor:default!important;border:1px dashed #b9cec7!important;padding:28px!important;display:block!important}@media (width<=800px){.curriculum-layout,.curriculum-add{grid-template-columns:1fr}.curriculum-add button{padding:11px}.topic-list>div{grid-template-columns:34px minmax(0,1fr) auto}.topic-list .topic-remove{grid-column:2/4}}.operation-status{color:#a23636;background:#fff4f4;border:1px solid #f0c7c7;border-radius:12px;margin:0 0 16px;padding:12px 14px;font-size:14px;font-weight:700}.operation-status.success{color:#147546;background:#eefaf3;border-color:#b9e4cd}.web-search-view{max-width:1060px}.web-search-head{text-align:center;margin:5px auto 27px}.web-search-head h2{margin:8px 0;font-size:34px}.web-search-head p{color:var(--muted)}.web-search-box{border:1px solid var(--line);background:#fff;border-radius:15px;grid-template-columns:42px 1fr auto;align-items:center;padding:8px;display:grid;box-shadow:0 12px 38px #143a3014}.web-search-box>span{color:var(--green);text-align:center;font-size:23px}.web-search-box input{color:var(--ink);border:0;outline:0;padding:13px 6px;font-size:15px}.web-search-box button{background:var(--green);color:#fff;cursor:pointer;border:0;border-radius:10px;padding:13px 18px}.web-empty{text-align:center;color:var(--muted);padding:65px 20px}.web-empty>div:first-child{background:var(--mint);width:60px;height:60px;color:var(--green);border-radius:18px;place-items:center;margin:auto;font-size:26px;display:grid}.web-empty h3{color:var(--ink);margin:18px 0 7px}.web-empty>div:last-child{flex-wrap:wrap;justify-content:center;gap:9px;margin-top:22px;display:flex}.web-empty>div:last-child span{border:1px solid var(--line);background:#fff;border-radius:16px;padding:8px 11px;font-size:11px}.web-results{margin-top:28px}.result-summary{background:#eaf6f1;border:1px solid #cee5dc;border-radius:12px;align-items:center;gap:12px;padding:14px 17px;display:flex}.result-summary>span{color:var(--green);font-size:20px}.result-summary b,.result-summary small{display:block}.result-summary small{color:var(--muted);margin-top:4px}.web-results section{margin-top:25px}.web-results section>h3{align-items:center;gap:9px;font-size:15px;display:flex}.web-results section>h3>span{background:var(--mint);width:30px;height:30px;color:var(--green);border-radius:8px;place-items:center;display:grid}.web-results section>h3 small{color:var(--muted);margin-left:auto;font-weight:400}.web-result-grid{grid-template-columns:1fr 1fr;gap:10px;display:grid}.web-result-grid a{color:var(--ink);border:1px solid var(--line);background:#fff;border-radius:12px;align-items:center;gap:13px;padding:15px;text-decoration:none;transition:all .18s;display:flex}.web-result-grid a:hover{border-color:#79b6a4;transform:translateY(-2px);box-shadow:0 9px 25px #143a3014}.result-logo{background:var(--mint);width:42px;height:42px;color:var(--green);border-radius:11px;flex:none;place-items:center;font:21px Georgia,serif;display:grid}.web-result-grid a>div{min-width:0}.web-result-grid b,.web-result-grid small{display:block}.web-result-grid p{color:var(--muted);margin:5px 0;font-size:12px;line-height:1.4}.web-result-grid small{color:#27886d}.web-result-grid i{color:var(--green);margin-left:auto;font-style:normal}.web-caution{color:#786a3e;background:#fff9e9;border:1px solid #eee0b5;border-radius:10px;margin-top:22px;padding:12px 15px;font-size:11px}@media (width<=720px){.web-search-box{grid-template-columns:35px 1fr}.web-search-box button{grid-column:1/3}.web-result-grid{grid-template-columns:1fr}}.lesson-output{grid-column:1/-1;margin-top:8px}.lesson-loading{color:#177461;background:#fff;border:1px solid #dce6e1;border-radius:14px;padding:22px;font-weight:500}.lesson-result{color:#263f39;background:#fff;border:1px solid #dce6e1;border-radius:20px;max-width:920px;margin:0 auto;padding:clamp(22px,4vw,48px);box-shadow:0 12px 38px #153c3010}.lesson-result-head{border-bottom:1px solid #e4ebe8;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:28px;padding-bottom:24px;display:flex}.lesson-result-head h2{margin:7px 0;font-size:34px}.lesson-result-head mark{color:#177461;white-space:nowrap;background:#e7f4ef;border-radius:20px;padding:8px 12px;font-size:11px}.lesson-actions{flex-direction:column;align-items:flex-end;gap:10px;display:flex}.lesson-actions button{color:#fff;cursor:pointer;background:#177461;border:0;border-radius:9px;padding:10px 14px;font-size:13px;font-weight:600}.lesson-actions button:hover{background:#105c4c}.lesson-actions .speech-button{background:#294f79}.speech-controls{gap:7px;display:flex}.speech-controls button{background:#294f79}.speech-controls .speech-stop{background:#8b4038}.lesson-result>section{margin:30px 0}.lesson-result>section>h3{color:#173f36;margin:0 0 12px;font:600 22px Georgia,serif}.lesson-result p{color:#405a54;white-space:pre-line;max-width:76ch;margin:10px 0;font-size:16px;font-weight:400;line-height:1.85}.lesson-definition{background:#f3f8f5;border-left:4px solid #2a9276;border-radius:10px;gap:16px;padding:20px;display:flex}.lesson-definition>span,.lesson-section-title>span{color:#fff;background:#177461;border-radius:50%;flex:none;place-items:center;width:32px;height:32px;font-weight:600;display:grid}.lesson-definition h3{margin:2px 0 8px;font:600 19px Georgia,serif}.lesson-definition p{margin:0}.lesson-section-title{align-items:center;gap:12px;margin:34px 0 18px;display:flex}.lesson-section-title h3{color:#173f36;margin:0;font:600 22px Georgia,serif}.lesson-figures{gap:16px;margin-bottom:36px;display:grid}.concept-figure{background:linear-gradient(135deg,#f4faf7,#fbfaf6);border:1px solid #cfe2dc;border-radius:15px;margin:0;padding:20px;overflow:hidden}.concept-figure figcaption{color:#174a3e;margin-bottom:16px;font:600 18px Georgia,serif}.concept-figure>div{align-items:stretch;gap:8px;padding:4px 2px 10px;display:flex;overflow-x:auto}.concept-figure>div>span{align-items:center;gap:8px;min-width:max-content;display:flex}.concept-figure b{color:#174a3e;text-align:center;background:#fff;border:1px solid #8fc4b5;border-radius:12px;place-items:center;max-width:150px;min-height:58px;padding:10px 14px;font-size:13px;font-weight:600;display:grid}.concept-figure i{color:#2b9277;font-size:24px;font-style:normal}.concept-figure p{color:#617a74;margin:8px 0 0;font-size:14px;line-height:1.65}.lesson-image-loading{color:#177461;background:#f3f8f5;border-radius:11px;padding:16px;font-size:14px}.lesson-images{margin:10px 0 35px!important}.lesson-images>h3{color:#173f36;font:600 20px Georgia,serif}.lesson-images>div{grid-template-columns:repeat(2,minmax(0,1fr));gap:13px;display:grid}.lesson-images a{color:#294c43;background:#fff;border:1px solid #d7e4df;border-radius:13px;text-decoration:none;display:block;overflow:hidden}.lesson-images img{object-fit:contain;background:#f4f7f5;width:100%;height:210px;display:block}.lesson-images span{gap:5px;padding:12px;display:grid}.lesson-images b{font-size:13px;line-height:1.35}.lesson-images small{color:#71857f;font-size:10px;line-height:1.4}.lesson-images>p{color:#71857f!important;font-size:11px!important;line-height:1.5!important}.lesson-concepts>div:last-child,.lesson-examples>div:last-child{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.lesson-concepts article,.lesson-examples article{background:#fafbf9;border:1px solid #e0e9e5;border-radius:12px;padding:15px}.lesson-concepts article b{color:#17614f;font-weight:600}.lesson-concepts article p,.lesson-examples article p{margin:6px 0 0;font-size:14px;line-height:1.65}.lesson-examples h4{color:#174a3e;margin:0;font-weight:600}.lesson-videos>a,.lesson-references>a{color:#294c43;border:1px solid #dce6e1;border-radius:11px;align-items:center;gap:13px;margin:8px 0;padding:13px;text-decoration:none;display:flex}.lesson-videos>a>span{color:#d95745}.lesson-videos>a div{gap:3px;display:grid}.lesson-videos>a small,.lesson-videos>a em{color:#758b85;font-size:10px}.lesson-videos>a b{font-weight:600}.lesson-videos>a>i{margin-left:auto}.video-api-note{background:#fff8e8;border:1px solid #eedcae;border-radius:10px;padding:13px;max-width:none!important;font-size:14px!important}.lesson-summary{background:#173f36;border-radius:14px;padding:22px}.lesson-summary .lesson-section-title{margin:0 0 10px}.lesson-summary .lesson-section-title h3,.lesson-summary p{color:#eef8f4}.lesson-summary p{max-width:none;margin:0}.lesson-source-downloads{border-top:1px solid #dce6e1;padding-top:6px}.lesson-source-downloads .lesson-section-title{align-items:flex-start}.lesson-source-downloads .lesson-section-title>div{gap:5px;display:grid}.lesson-source-downloads .lesson-section-title p{color:#71857f;margin:0;font-size:13px;line-height:1.5}.lesson-source-downloads>div:last-child{gap:10px;display:grid}.lesson-source-downloads a{color:#294c43;background:#f8fbfa;border:1px solid #d7e4df;border-radius:12px;grid-template-columns:42px minmax(0,1fr) auto;align-items:center;gap:13px;padding:13px 15px;text-decoration:none;display:grid}.lesson-source-downloads a:hover{background:#eff8f4;border-color:#6aaf9d}.lesson-source-downloads a>span{color:#177461;background:#dff1ea;border-radius:10px;place-items:center;width:42px;height:42px;display:grid}.lesson-source-downloads a b{overflow-wrap:anywhere;font-size:14px}.lesson-source-downloads a small{color:#177461;white-space:nowrap;font-weight:600}.lesson-references{border-top:1px solid #dce6e1;margin-top:32px;padding-top:22px}.lesson-references h3{font:600 19px Georgia,serif}.lesson-references>a small{color:#177461;margin-left:auto}.activity-view{max-width:1050px}.activity-head{justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:20px;display:flex}.activity-head h2{margin:7px 0;font-size:34px}.activity-head p{color:#6e817c;margin:0;line-height:1.6}.activity-head>a{color:#fff;background:#177461;border-radius:9px;flex:none;padding:11px 15px;font-size:13px;font-weight:600;text-decoration:none}.activity-frame{aspect-ratio:16/10;background:#fff;border:1px solid #dce6e1;border-radius:17px;width:100%;min-height:430px;position:relative;overflow:hidden;box-shadow:0 12px 34px #153c3014}.activity-frame iframe{border:0;width:100%;height:100%;display:block}.activity-note{color:#6e817c;text-align:center;margin-top:12px;font-size:12px}.activity-levels{grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:13px;margin:24px 0;display:grid}.activity-levels button{text-align:left;color:#294c43;cursor:pointer;background:#fff;border:1px solid #d8e5e0;border-radius:15px;grid-template-columns:42px 1fr;align-items:center;gap:2px 12px;padding:17px;display:grid}.activity-levels button:hover,.activity-levels button.chosen{background:#edf8f4;border-color:#23856e;box-shadow:0 8px 20px #153c3010}.activity-levels span{color:#177461;background:#dff1ea;border-radius:50%;grid-row:1/3;place-items:center;width:42px;height:42px;font-weight:700;display:grid}.activity-levels b{font-size:15px}.activity-levels small{color:#748a84}.activity-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.activity-cards>button{text-align:left;cursor:pointer;color:#294c43;background:#fff;border:1px solid #dbe6e2;border-radius:16px;grid-template-columns:46px 1fr auto;align-items:center;gap:14px;padding:18px;display:grid}.activity-cards>button:hover{border-color:#78b7a6;transform:translateY(-2px);box-shadow:0 10px 28px #153c3015}.activity-cards>button>span{color:#177461;background:#e6f5ef;border-radius:13px;place-items:center;width:46px;height:46px;display:grid}.activity-cards div{gap:5px;display:grid}.activity-cards small{color:#23856e}.activity-cards p{color:#71857f;margin:0;line-height:1.45}.activity-cards i{font-size:22px;font-style:normal}.activity-empty{text-align:center;color:#70857f;background:#f8faf9;border:1px dashed #bdcec8;border-radius:14px;padding:35px}.activity-back{color:#177461;cursor:pointer;background:0 0;border:0;padding:8px 0;font-weight:600}.activity-player-head{margin-top:8px}.activity-admin-grid{grid-template-columns:minmax(300px,.8fr) minmax(360px,1.2fr);gap:18px;display:grid}.activity-admin-form{gap:13px;display:grid}.activity-admin-form label{color:#45635b;gap:6px;font-size:12px;font-weight:600;display:grid}.activity-admin-form input,.activity-admin-form select,.activity-admin-form textarea{color:#294c43;width:100%;font:inherit;background:#fff;border:1px solid #d7e2de;border-radius:9px;padding:11px}.activity-admin-form textarea{resize:vertical;min-height:80px}.activity-admin-form .primary{margin-top:3px}.activity-admin-list{gap:9px;margin-top:14px;display:grid}.activity-admin-list>div{border:1px solid #e0e8e5;border-radius:11px;grid-template-columns:38px 1fr auto;align-items:center;gap:11px;padding:12px;display:grid}.activity-admin-list>div>span{color:#177461;background:#e8f5f0;border-radius:10px;place-items:center;width:38px;height:38px;display:grid}.activity-admin-list>div>div{gap:4px;display:grid}.activity-admin-list small{color:#738781}.activity-admin-list button{color:#a74435;cursor:pointer;background:#fff0ed;border:0;border-radius:8px;padding:8px 10px}.cache-list{gap:9px;display:grid}.cache-list>div{border:1px solid #dde7e3;border-radius:11px;grid-template-columns:40px 1fr auto;align-items:center;gap:12px;padding:13px;display:grid}.cache-list>div>span{color:#177461;background:#e7f4ef;border-radius:10px;place-items:center;width:40px;height:40px;display:grid}.cache-list>div>div{gap:4px;display:grid}.cache-list small{color:#71857f}.cache-list button{color:#855d15;cursor:pointer;background:#fff3dd;border:0;border-radius:8px;padding:9px 11px}.cache-note{color:#71857f;font-size:12px;line-height:1.6}@media (width<=700px){.lesson-result{padding:20px}.lesson-result-head{display:block}.lesson-result-head mark{margin-top:10px;display:inline-block}.lesson-result p{font-size:15px;line-height:1.75}.lesson-concepts>div:last-child,.lesson-examples>div:last-child{grid-template-columns:1fr}}@media print{@page{size:A4;margin:14mm}body{background:#fff!important}body *{visibility:hidden}.lesson-result,.lesson-result *{visibility:visible}.lesson-result{width:100%;max-width:none;box-shadow:none;color:#172f29;border:0;padding:0;position:absolute;inset:0}.lesson-actions{display:none!important}.lesson-result section,.concept-figure,.lesson-concepts article,.lesson-examples article{break-inside:avoid}.lesson-result p{font-size:11pt;line-height:1.55;color:#263f39!important}.lesson-result-head{margin-bottom:18px}.lesson-result-head h2{font-size:24pt}.concept-figure{-webkit-print-color-adjust:exact;print-color-adjust:exact;background:#f4faf7!important}.lesson-summary{-webkit-print-color-adjust:exact;print-color-adjust:exact;color:#172f29!important;break-inside:auto!important;page-break-inside:auto!important;background:#f2f8f5!important;border:1px solid #a9c9be!important;display:block!important}.lesson-summary .lesson-section-title,.lesson-summary .lesson-section-title h3,.lesson-summary p{visibility:visible!important;color:#172f29!important;opacity:1!important;display:block!important}.lesson-summary p{white-space:normal!important;overflow:visible!important}}@media (width<=600px){body{-webkit-text-size-adjust:100%;overflow-x:hidden}.login-page{min-height:100svh;display:block!important}.login-brand{align-items:flex-start!important;min-height:auto!important;padding:28px 22px 30px!important}.login-copy{text-align:center;width:100%}.bios-logo{width:112px!important;height:112px!important;margin:0 auto 8px!important}.bios-name{letter-spacing:7px!important;font-size:30px!important;line-height:1!important}.bios-rule{margin:12px auto 17px!important}.login-school-logo{width:72px!important;height:90px!important;margin:13px auto 5px!important}.login-copy h1{margin:12px 0!important;font-size:29px!important;line-height:1.12!important}.login-copy p{max-width:34ch;margin:0 auto!important;font-size:14px!important;line-height:1.55!important}.login-side{padding:16px!important;display:block!important}.login-card{margin:0 auto;border-radius:17px!important;padding:24px 20px!important}.login-card h2{font-size:25px}.login-card input,.login-submit,.role-switch button{min-height:48px;font-size:16px}.shell{min-width:0;display:block!important}.shell>aside{z-index:20;position:sticky;top:0;box-shadow:0 3px 14px #102f2828;padding:10px 12px!important}.brand{margin:0 0 8px!important}.brand b{font-size:17px!important}.brand small{display:none!important}.shell nav{scrollbar-width:none;grid-template-columns:repeat(5,minmax(78px,1fr));gap:5px;padding-bottom:2px;overflow-x:auto;display:grid!important}.shell nav::-webkit-scrollbar{display:none}.shell nav button{line-height:1.2;text-align:center!important;white-space:normal!important;min-height:48px!important;padding:8px 6px!important;font-size:11px!important}.shell nav i{margin-bottom:3px;width:auto!important;display:block!important}.work{min-width:0}.work header{height:68px!important;padding:12px 16px!important}.work header em{letter-spacing:1px!important;font-size:8px!important}.work header h1{margin-top:4px!important;font-size:21px!important}.logout{padding:8px 11px!important}.content{width:100%;min-width:0;padding:20px 14px!important}.intro{align-items:flex-start!important;gap:12px!important;margin-top:4px!important}.intro>span{flex:0 0 45px;width:45px!important;height:45px!important}.intro h2,.title h2{font-size:24px!important}.intro p{font-size:14px!important}.ask textarea{font-size:16px;height:120px!important;padding:17px!important}.ask>div{gap:8px!important}.ask>div small{font-size:10px}.ask button,.primary,.lesson>button{min-height:46px!important}.columns,.sourcecols{display:block!important}.columns>.card,.columns>.lesson,.sourcecols>.card{margin-bottom:14px}.card,.lesson,.score{border-radius:14px!important;padding:20px!important}.topics{display:block!important}.topics button{width:100%;min-height:48px;margin-bottom:8px}.title{display:block!important}.title>button{min-height:44px;margin-top:12px}.student-add{display:block!important}.student-add input{width:100%;min-height:48px}.student-add button{min-height:48px;margin-top:8px!important}.student-list>div{grid-template-columns:36px minmax(0,1fr) auto!important;gap:8px!important}.student-list b{text-overflow:ellipsis;overflow:hidden}.lesson-output{margin-top:14px!important}.lesson-result{border-radius:14px!important;padding:18px 15px!important}.lesson-result-head{margin-bottom:20px!important;padding-bottom:17px!important;display:block!important}.lesson-result-head h2{overflow-wrap:anywhere;font-size:27px!important}.lesson-actions{margin-top:14px;align-items:stretch!important}.lesson-actions mark{text-align:center}.lesson-actions button{width:100%;min-height:48px;font-size:15px}.speech-controls{grid-template-columns:1fr 1fr;display:grid}.lesson-definition{gap:11px!important;padding:15px!important}.lesson-section-title{margin:27px 0 15px!important}.lesson-section-title h3,.lesson-result>section>h3{font-size:20px!important}.lesson-result p{max-width:none!important;font-size:15px!important;line-height:1.72!important}.concept-figure{padding:15px!important}.concept-figure>div{display:grid!important;overflow:visible!important}.concept-figure>div>span{justify-items:center;gap:4px!important;display:grid!important}.concept-figure b{width:100%;max-width:none!important;min-height:48px!important}.concept-figure i{height:24px;line-height:24px;transform:rotate(90deg)}.lesson-images>div{grid-template-columns:1fr}.lesson-images img{height:220px}.lesson-concepts>div:last-child,.lesson-examples>div:last-child{display:block!important}.lesson-concepts article,.lesson-examples article{margin-bottom:9px}.lesson-references>a{align-items:flex-start!important}.lesson-references>a b{overflow-wrap:anywhere}.lesson-references>a small{white-space:nowrap}.lesson-source-downloads a{grid-template-columns:38px minmax(0,1fr);padding:12px}.lesson-source-downloads a>span{grid-row:1/3;width:38px;height:38px}.lesson-source-downloads a small{white-space:normal;grid-column:2}.activity-head{display:block!important}.activity-head h2{font-size:27px!important}.activity-head>a{text-align:center;min-height:46px;margin-top:14px;display:block}.activity-frame{aspect-ratio:4/5;border-radius:12px;min-height:0!important}.activity-note{text-align:left}.activity-levels{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.activity-levels button{text-align:center;padding:12px 8px;display:block}.activity-levels span{margin:0 auto 7px}.activity-levels small{margin-top:4px;display:block}.activity-cards{grid-template-columns:1fr}.activity-cards>button{grid-template-columns:42px 1fr auto;padding:14px}.activity-admin-grid{grid-template-columns:1fr}.activity-admin-form input,.activity-admin-form select,.activity-admin-form textarea{min-height:46px;font-size:16px}}.poster-view{max-width:1180px;margin:0 auto}.poster-hero{color:#f7fff9;background:linear-gradient(130deg,#143b33,#24745f 60%,#4e9b77);border-radius:26px;align-items:center;gap:22px;padding:28px 30px;display:flex;box-shadow:0 18px 44px #194b3d33}.poster-hero>span{background:#ffffff1f;border:1px solid #ffffff47;border-radius:22px;place-items:center;width:72px;height:72px;font-size:32px;display:grid}.poster-hero em{letter-spacing:.16em;color:#d8f7e8;font-size:11px}.poster-hero h2{margin:5px 0 6px;font-size:30px}.poster-hero p{color:#e6f5ed;max-width:680px;margin:0}.poster-filters{max-width:440px;margin:20px 0;display:flex}.poster-filters label{color:#3a5b51;width:100%;font-size:12px;font-weight:700}.poster-filters select{color:#203b33;background:#fff;border:1px solid #d5e2dc;border-radius:13px;width:100%;margin-top:7px;padding:12px 14px;display:block}.poster-grid{grid-template-columns:repeat(auto-fill,minmax(285px,1fr));gap:18px;display:grid}.poster-card{background:#fff;border:1px solid #d8e5df;border-radius:20px;transition:transform .18s,box-shadow .18s;overflow:hidden;box-shadow:0 10px 28px #1c413612}.poster-card:hover{transform:translateY(-3px);box-shadow:0 16px 34px #1c413621}.poster-cover{color:#fff;background:linear-gradient(135deg,var(--poster-color),#173d35);isolation:isolate;min-height:150px;padding:18px 20px;position:relative}.poster-cover:after{content:"";z-index:-1;border:24px solid #ffffff14;border-radius:50%;width:150px;height:150px;position:absolute;bottom:-48px;right:-34px}.poster-card.landscape .poster-cover{min-height:138px}.poster-cover-top{justify-content:space-between;align-items:center;display:flex}.poster-cover-top span,.poster-cover-top small{letter-spacing:.08em;background:#ffffff24;border-radius:7px;padding:5px 8px;font-size:9px;font-style:normal;font-weight:850}.poster-cover-copy{flex-direction:column;justify-content:flex-end;align-items:flex-start;min-height:88px;display:flex}.poster-cover-copy em{letter-spacing:.12em;text-transform:uppercase;color:#ffffffbd;font-size:10px;font-style:normal}.poster-cover-copy strong{max-width:92%;margin-top:6px;font-size:20px;line-height:1.18}.poster-cover-copy i{background:#fff;border-radius:3px;width:42px;height:3px;margin-top:12px;display:block}.poster-card-body{padding:16px 18px 18px}.poster-card-body>small{color:var(--poster-color);font-size:11px;font-weight:850;display:block}.poster-card-body p{color:#667b74;min-height:40px;margin:7px 0 14px;font-size:13px;line-height:1.5}.poster-card-body div{gap:8px;display:flex}.poster-card-body a{text-align:center;color:#fff;background:var(--poster-color);border-radius:10px;flex:1;justify-content:center;align-items:center;gap:6px;padding:10px 8px;font-size:12px;font-weight:800;text-decoration:none;display:flex}.poster-card-body a b{font-size:14px}.poster-card-body a:last-child{color:#245f50;background:#e9f5ef;flex:0 0 86px}.poster-admin-grid{grid-template-columns:minmax(0,1fr);gap:18px;display:grid}.poster-admin-grid.single{max-width:820px}.poster-upload-form{grid-template-columns:1fr 1fr;gap:14px 16px;display:grid}.poster-upload-form h3,.poster-upload-form .world-file,.poster-upload-form>button{grid-column:1/-1}.poster-upload-form label{margin:0!important}.poster-upload-form textarea{min-height:90px}.poster-resource-admin{margin-top:18px}.poster-resource-admin>div{border-bottom:1px solid #edf2ef;grid-template-columns:46px minmax(180px,1.2fr) minmax(130px,.8fr) 100px auto auto auto;align-items:center;gap:8px;padding:10px 0;display:grid}.poster-resource-admin>div>span{color:#24745f;font-size:11px;font-weight:900}.poster-resource-admin input,.poster-resource-admin select{border:1px solid #d7e2dd;border-radius:9px;min-width:0;padding:9px}.poster-resource-admin button{cursor:pointer;border:0;border-radius:9px;padding:9px 10px}.poster-resource-admin .danger{color:#a33434;background:#fff0f0}@media (width<=900px){.poster-resource-admin>div{grid-template-columns:42px 1fr}.poster-resource-admin>div>*{grid-column:2}.poster-resource-admin>div>span{grid-area:1/1/7}}@media (width<=620px){.poster-hero{align-items:flex-start;padding:22px}.poster-hero>span{border-radius:16px;width:52px;height:52px;font-size:24px}.poster-hero h2{font-size:23px}.poster-grid{grid-template-columns:1fr}.poster-cover{min-height:138px}.poster-card-body p{min-height:0}.poster-upload-form{grid-template-columns:1fr}.poster-upload-form>*{grid-column:1!important}}.install-prompt{z-index:120;left:50%;bottom:max(16px, env(safe-area-inset-bottom));color:#f7fffb;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#0d463df5;border:1px solid #bef2dd52;border-radius:20px;grid-template-columns:52px minmax(0,1fr) auto auto;align-items:center;gap:12px;width:min(92vw,620px);padding:13px 12px 13px 14px;animation:.42s cubic-bezier(.2,.8,.2,1) both install-prompt-in;display:grid;position:fixed;transform:translate(-50%);box-shadow:0 18px 50px #05252052}.install-prompt img{object-fit:contain;background:#ffffff1a;border-radius:14px;width:52px;height:52px}.install-prompt-copy{gap:2px;min-width:0;display:grid}.install-prompt-copy strong{font-size:.98rem;line-height:1.25}.install-prompt-copy span{color:#cce8df;font-size:.82rem;line-height:1.35}.install-prompt-copy small{color:#fff2bd;margin-top:4px;font-size:.78rem;line-height:1.35}.install-primary{color:#124b40;min-height:42px;font:inherit;cursor:pointer;background:#fff7d9;border:0;border-radius:13px;padding:0 16px;font-size:.86rem;font-weight:800}.install-close{color:#d7ede6;cursor:pointer;background:0 0;border:0;border-radius:50%;align-self:start;width:32px;height:32px;font-size:1.5rem;line-height:1}@keyframes install-prompt-in{0%{opacity:0;transform:translate(-50%,22px)}to{opacity:1;transform:translate(-50%)}}@media (width<=560px){.install-prompt{border-radius:18px;grid-template-columns:44px minmax(0,1fr) 32px;gap:10px;padding:11px}.install-prompt img{border-radius:12px;width:44px;height:44px}.install-primary{grid-column:2;justify-self:start;min-height:38px;margin-top:4px}.install-close{grid-area:1/3}}@media (prefers-reduced-motion:reduce){.install-prompt{animation:none}}
