:root{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#202b3c;background:#eef3f7;font-size:16px;line-height:1.55;color-scheme:light;--blue:#1451c5;--ink:#202b3c;--muted:#66758c;--line:#d5dfeb}*{box-sizing:border-box}body{margin:0}a{color:var(--blue);text-underline-offset:3px}button,input,select,textarea{font:inherit}button,a,input,select,textarea{outline-offset:3px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #9dbbfa}button{cursor:pointer}.brandbar{background:#104bb7;color:white;min-height:68px;box-shadow:0 2px 5px #12295310}.brand-inner{max-width:1080px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:18px 32px;gap:24px}.brand{display:flex;gap:11px;align-items:center;font-weight:650;font-size:18px;letter-spacing:-.25px}.brand svg{width:26px;height:26px}.brandbar a{color:#fff;font-size:13px;text-decoration:none}.brandbar a:hover{text-decoration:underline}.page-heading,main,body>footer{max-width:980px;margin:auto;padding:0 32px}.page-heading{padding-top:38px;padding-bottom:24px}h1{font-size:32px;letter-spacing:-.9px;line-height:1.2;font-weight:650;margin:8px 0 12px}h2{font-size:25px;letter-spacing:-.6px;line-height:1.3;font-weight:650;margin:8px 0 12px}h3{font-size:17px;line-height:1.4;font-weight:650;margin:0 0 8px}p{margin:0 0 18px;line-height:1.7}.eyebrow{font-size:11px;letter-spacing:1.5px;font-weight:700;color:var(--blue)}#environment{font-size:13px;color:var(--muted);margin:0}.steps{list-style:none;padding:0;display:flex;max-width:600px;margin:28px 0 0;gap:0}.steps li{position:relative;display:flex;align-items:center;gap:8px;flex:1;font-size:12px;color:#78879c;white-space:nowrap}.steps li:after{content:'';height:1px;background:#ccd7e5;flex:1;margin:0 14px}.steps li:last-child{flex:0}.steps li:last-child:after{display:none}.step-number{border:1px solid #c2cfdf;background:#f8fafc;display:grid;place-items:center;width:24px;height:24px;border-radius:50%;font-size:11px}.steps li.current{color:#144fbc;font-weight:650}.current .step-number{background:var(--blue);color:#fff;border-color:var(--blue)}.steps li.done{color:#466d9c}.done .step-number{background:#dfeaff;color:#1451c5;border-color:#c5d8f8}section{background:#fff;border:1px solid var(--line);border-radius:10px;padding:32px 36px;margin-bottom:24px;box-shadow:0 2px 3px #13326003}section>p:first-of-type{color:#56677f}.progress{font-size:11px;text-transform:uppercase;letter-spacing:1.1px;font-weight:700;color:var(--blue);margin-bottom:12px}.lede{max-width:680px;color:#66758c}form{margin-top:26px}label{display:block;font-size:14px;font-weight:550;line-height:1.5;margin:0 0 18px}input,select,textarea{display:block;width:100%;border:1px solid #adbed6;border-radius:5px;margin-top:8px;padding:11px 12px;color:#26374e;background:#fff;font-weight:400;font-size:15px;min-height:46px}select{padding-right:28px}input:hover,select:hover{border-color:#7d99c1}input[type=checkbox],input[type=radio]{display:inline-block;min-height:0;width:17px;height:17px;margin:2px 10px 0 0;vertical-align:top;accent-color:var(--blue);flex-shrink:0}label:has(>input[type=checkbox]){display:flex;align-items:flex-start;font-weight:400;line-height:1.6}.consent{padding:16px 18px;background:#f4f7fc;border:1px solid #dae4f2;border-radius:6px;margin:22px 0}fieldset{border:0;border-top:1px solid #e2e8f0;margin:28px 0;padding:24px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}legend{grid-column:1/-1;float:left;width:100%;font-weight:650;font-size:15px;padding:0;margin-bottom:14px}fieldset label{clear:both;margin:0!important;border:1px solid #d4deec;border-radius:6px;padding:11px 12px}fieldset label:has(input:checked){border-color:#6691de;background:#f0f5ff;color:#184a9b}fieldset legend+label{clear:both}.grid{display:grid;grid-template-columns:1fr 1fr;gap:2px 24px;clear:both}.form-heading{grid-column:1/-1;border-top:1px solid #e2e8f0;padding-top:25px;margin:14px 0 18px;font-size:16px}button,.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;text-decoration:none;background:var(--blue);color:#fff;border:1px solid var(--blue);border-radius:5px;padding:11px 18px;min-height:44px;font-size:14px;font-weight:600;line-height:1.4;margin:4px 8px 4px 0;transition:background .15s,box-shadow .15s}button:hover,.button:hover{background:#0c3e9e}button.secondary,.button.secondary{background:#fff;color:var(--blue);border-color:#a4bce7}button.secondary:hover,.button.secondary:hover{background:#f0f5ff}button:disabled{opacity:.65;cursor:wait}button[aria-busy=true]:after{content:'';width:13px;height:13px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin .8s linear infinite}.error{color:#a52a37;font-size:14px;background:#fff3f3;border-radius:5px;padding:12px 14px;margin:18px 0 0}.error:empty{display:none}.notice{display:flex;gap:10px;background:#f1f6ff;color:#3b5a87;border:1px solid #d6e3f8;padding:13px 16px;border-radius:6px;font-size:13px;line-height:1.6;margin:22px 0}.notice strong{font-weight:650}.facts{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid #d9e3ef;border-radius:7px;margin:24px 0;overflow:hidden}.fact{padding:18px 20px;background:#f8fafe;border-right:1px solid #d9e3ef}.fact:last-child{border:0}.fact strong{display:block;font-size:23px;font-weight:650;letter-spacing:-.6px;color:#244775}.fact span{font-size:12px;color:#6c7e96}.detail-block{padding:22px 0;border-top:1px solid #e2e8f0}.detail-block p:last-child{margin:0}.detail-block p{font-size:14px;color:#56677f}.install-row{display:flex;align-items:center;justify-content:space-between;gap:22px}.install-row p{margin:0;font-size:14px}.install-row .button{white-space:nowrap}.help{font-size:13px;color:#6c7e96;margin:12px 0 0}.checks label{margin:0 0 24px}.checks .question-index{font-size:11px;color:#6d82a0;display:block;font-weight:600;margin-bottom:4px}.shopping-top{display:flex;justify-content:space-between;align-items:center;gap:24px}.status{display:flex;align-items:center;gap:8px;color:#3e665d;font-size:13px;margin:8px 0 0}.status:before{content:'';background:#24836b;width:7px;height:7px;border-radius:50%;flex-shrink:0}.timer{font-size:30px;letter-spacing:-.6px;font-weight:650;color:#254674;font-variant-numeric:tabular-nums;white-space:nowrap}.timer small{display:block;color:#7a8da6;font-size:11px;letter-spacing:0;font-weight:400;text-align:right}.voucher-box{border:1px solid #c8d9f0;background:#f4f8ff;border-radius:8px;margin:26px 0;padding:20px 24px}.voucher-label{font-size:12px;color:#526f9a;margin:0 0 6px}.voucher{font:600 21px/1.5 ui-monospace,SFMono-Regular,monospace;overflow-wrap:anywhere;margin:0;color:#1e4d96}.products{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:22px 0 14px}.product-link{display:flex;justify-content:space-between;align-items:center;border:1px solid #ccd9ec;border-radius:7px;padding:18px;text-decoration:none;font-size:15px;font-weight:600;gap:16px}.product-link:hover{background:#f4f8ff;border-color:#8eaddf}.product-link small{display:block;color:#798ba4;font-size:11px;font-weight:400;margin-top:5px}.actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding-top:24px;margin-top:24px;border-top:1px solid #e2e8f0}.actions .help{margin:0}.end-icon{width:44px;height:44px;display:grid;place-items:center;background:#eaf2ff;color:#1451c5;border-radius:50%;font-size:22px;margin-bottom:18px}.debrief{margin:24px 0;padding:20px;background:#f6f8fc;border-radius:7px}.debrief p{font-size:14px;color:#56677f;margin-bottom:0}body>footer{display:flex;justify-content:space-between;padding-top:6px;padding-bottom:32px;color:#7c8ba0;font-size:12px;gap:20px}body>footer a{text-decoration:none}code{overflow-wrap:anywhere}small{color:#6c7e96}.loading{color:#66758c;padding:32px}.loading:before{content:'';display:inline-block;width:14px;height:14px;border:2px solid #c4d4ec;border-top-color:#1451c5;border-radius:50%;animation:spin .8s linear infinite;vertical-align:middle;margin-right:10px}.legal h2{font-size:19px;margin:28px 0 10px}.legal p{font-size:15px}h2:focus{outline:none}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}@media(max-width:640px){.brand-inner{padding:16px 20px}.brand{font-size:16px}.page-heading,main,body>footer{padding-left:18px;padding-right:18px}.page-heading{padding-top:28px}h1{font-size:28px}h2{font-size:23px}section{padding:24px 20px}.grid{grid-template-columns:1fr}fieldset{grid-template-columns:1fr 1fr}.facts{grid-template-columns:repeat(3,1fr)}.fact{padding:14px 10px}.fact strong{font-size:20px}.fact span{font-size:11px}.steps li{font-size:11px}.steps li:after{margin:0 8px}.install-row{display:block}.install-row .button{margin-top:16px}.products{grid-template-columns:1fr}.shopping-top{align-items:flex-start;gap:12px}.timer{font-size:24px}body>footer{font-size:11px}.brandbar a{font-size:12px}}

body[data-step="2"] .page-heading{padding-top:24px;padding-bottom:20px}body[data-step="2"] .page-heading h1{font-size:26px}body[data-step="2"] .steps{margin-top:18px}

.voucher-row{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.voucher-row .voucher{flex:1;min-width:0;margin:0;overflow-wrap:anywhere;user-select:all}.voucher-row button{flex-shrink:0;margin:0}.voucher-box .copy-status{font-size:13px;color:#245c49;margin:10px 0 0}.copy-status:empty{display:none}.voucher-box .voucher-rule{font-size:13px;color:#42546e;margin:14px 0 0;line-height:1.6}

/* Shared website-to-extension handoffs: identical wording and presentation in both arms. */
.handoff{margin:22px 0;padding:20px 22px;border:1px solid #b9cef0;border-left:4px solid #1451c5;border-radius:10px;background:#f2f6fe;color:#263d60}
.handoff-tag{display:block;color:#1451c5;font-size:11px;font-weight:750;letter-spacing:.08em;margin-bottom:8px}.handoff h3{margin:0 0 8px}.handoff p{margin:0 0 14px}.handoff p:last-child{margin-bottom:0}.handoff-actions{display:grid;gap:10px}.handoff-actions button{text-align:left}.product-link.opened{border-color:#5e8ed8;background:#edf4ff}.product-link.opened:after{content:' · Opened ✓';font-size:12px;white-space:nowrap}
.screen-form .grid,.screen-form fieldset{grid-template-columns:minmax(0,1fr)}
@media(min-width:1050px){body[data-step="1"] main{padding-right:410px}.overlay-step{min-width:300px}}

.reward-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:24px 0}.reward-option{display:flex;gap:12px;padding:22px;border:1px solid #bdcbe0;border-radius:10px;cursor:pointer}.reward-option input{width:auto;align-self:flex-start;margin-top:5px;accent-color:#1451c5}.reward-option span span{display:block;color:#526987;margin-top:8px}.reward-option:has(:checked){border-color:#1451c5;background:#edf3ff}.text-link{border:0;background:none;color:#2455a5;padding:4px 0;text-decoration:underline;font-size:13px}@media(max-width:600px){.reward-options{grid-template-columns:1fr}}
/* Category-choice protocol */
.screen-form{display:grid;gap:18px}.screen-form label{display:grid;gap:7px}.screen-form .check{display:flex;gap:10px;align-items:flex-start}.check input{width:auto;flex-shrink:0;margin-top:4px}.reward-options{display:flex;flex-direction:column}.reward-options .reward-card{display:flex;gap:14px;padding:22px;border:1px solid #cdd8e6;border-radius:12px;align-items:flex-start;cursor:pointer}.reward-card input{width:auto;margin-top:5px}.reward-card:has(:checked){border-color:#1855c8;background:#f3f7ff}.button{display:inline-block;background:#1855c8;color:white!important;border-radius:8px;padding:12px 18px;text-decoration:none;margin:8px 8px 8px 0}.product-buttons{display:flex;flex-wrap:wrap;gap:12px}.notice{border-left:3px solid #997018;padding:12px;background:#fff8e9}dialog{max-width:680px;width:calc(100vw - 40px);max-height:85vh;overflow:auto;border:1px solid #ccd8e7;border-radius:14px;padding:28px;color:#20334e}dialog::backdrop{background:#12213f80}dialog p{font-size:14px;line-height:1.6}details{margin:22px 0}summary{cursor:pointer;font-weight:600}

.reward-card span{font-weight:400}.reward-card strong{font-weight:650}.preview-nav{font:12px/1.6 system-ui;padding:8px 18px;background:#e6edf7}

.comparison-deadline{background:#f2f6ff;border:1px solid #cbdaf6;border-radius:10px;padding:18px 20px;margin:22px 0}.comparison-deadline>div{display:flex;align-items:center;justify-content:space-between;gap:16px}.deadline-label{font-size:14px;font-weight:650;color:#244572}.comparison-deadline #remaining{font-size:30px;line-height:1.2;font-variant-numeric:tabular-nums;color:#1451c5;white-space:nowrap}.comparison-deadline p{font-size:14px;line-height:1.6;margin:12px 0 0;color:#425575}.comparison-task .product-buttons{margin:24px 0 20px}.comparison-task .product-buttons button{flex:1;min-width:180px;margin:0}.comparison-return{margin-bottom:22px}.comparison-footer{border-top:1px solid #e3e9f0;padding-top:14px}.comparison-footer .text-action{display:inline;background:none;border:0;border-radius:0;box-shadow:none;color:#66758c;font-size:13px;font-weight:400;text-decoration:underline;text-underline-offset:3px;padding:6px 0;margin:0;min-height:32px}.comparison-footer .text-action:hover{background:none;color:#202b3c}@media(max-width:480px){.comparison-deadline{padding:16px}.comparison-task .product-buttons button{flex-basis:100%}}

.task-ended h3{margin-top:28px}.task-ended .return-countdown{margin-top:22px}.task-ended>p:last-child{margin-bottom:0}

.screen-form .screen-radio-list{display:flex;flex-direction:column;gap:8px;border:0;padding:0;margin:0;min-width:0}.screen-radio-list legend{padding:0;margin-bottom:12px;font-weight:600}.screen-form .screen-radio-list label{display:flex;align-items:flex-start;gap:10px;padding:10px 12px;margin:0;border:1px solid #d5dfeb;border-radius:7px;cursor:pointer;font-weight:400}.screen-radio-list input[type=radio]{width:18px;height:18px;min-height:0;flex:0 0 18px;margin:3px 0 0;padding:0;accent-color:#1451c5}.screen-radio-list label:has(:checked){background:#f2f6ff;border-color:#1451c5}.screen-radio-list label:hover{border-color:#8eaddf}

#contribution:not([hidden]){margin-top:20px;padding:26px 24px;background:#f5f8ff;border:1px solid #cbdaf0;border-radius:10px}#contribution p strong,#contribution legend{font-weight:700}#contribution .screen-radio-list label{background:#fff}#contribution .screen-radio-list label:has(:checked){background:#eaf1ff}@media(max-width:480px){#contribution:not([hidden]){padding:20px 16px}}

/* Plain survey matrices, following Study 1's question/column-header layout. */
main:has(.post-task-survey){max-width:1180px}
.post-task-survey .screen-form{gap:32px}
.post-task-survey fieldset{min-width:0}
.post-task-survey legend{float:none;font-size:16px;line-height:1.5;font-weight:600;padding:0;margin-bottom:14px;max-width:100%}
.post-task-survey .screen-radio-list{gap:7px}
.survey-matrix-wrap{min-width:0;overflow-x:auto}
.survey-matrix{width:100%;min-width:700px;border-collapse:collapse;table-layout:fixed;font-size:13px;line-height:1.45;color:#344155}
.survey-matrix.scale-9{min-width:940px}.survey-matrix.scale-7{min-width:820px}
.matrix-question-column{width:24%}
.survey-matrix th,.survey-matrix td{padding:12px 6px;text-align:center;vertical-align:middle}
.survey-matrix thead th{font-weight:400;color:#536073;background:#fff;border-bottom:1px solid #bac5d1;vertical-align:top}
.survey-matrix .matrix-question-heading{vertical-align:bottom;text-align:left;color:#687586;font-size:12px}
.matrix-number{display:block;margin-bottom:5px;font-size:13px;color:#344155;font-weight:600}
.survey-matrix tbody th{text-align:left;font-size:15px;font-weight:550;padding:18px 18px 18px 0;background:#f6f7f9}
.survey-matrix tbody td{padding:0;background:#f6f7f9}
.survey-matrix tbody tr{border-bottom:1px solid #dce1e7}
.screen-form .survey-matrix .matrix-option{display:flex;align-items:center;justify-content:center;min-height:66px;margin:0;padding:12px 0;cursor:pointer;border:0;border-radius:0;background:transparent}
.survey-matrix .matrix-option:hover{background:#eaf0f7}
.survey-matrix input[type=radio]{width:18px;height:18px;min-height:0;margin:0;padding:0;accent-color:#1451c5}
@media(max-width:700px){.matrix-question-column{width:200px}.survey-matrix thead th:first-child,.survey-matrix tbody th{position:sticky;left:0;z-index:1}.survey-matrix tbody th{padding-left:10px}.survey-matrix-wrap{padding-bottom:8px}}

.screen-form .test-condition{max-width:300px;font-size:13px;color:#66758c;margin:0}.test-condition select{font-size:14px;margin-top:0}

/* Leave the task instructions readable beside the comparison overlay. */
@media(min-width:900px){body[data-study2-comparison-overlay] .page-heading,body[data-study2-comparison-overlay] main{width:calc(100% - 484px);margin-right:484px;margin-left:auto}}

/* Keep both shopping-task instruction paragraphs in the same text style. */
section.task-instructions > p:first-of-type{color:inherit}

.comparison-products{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:24px 0}
.comparison-product{min-width:0;text-align:center;border:1px solid var(--line);border-radius:8px;padding:18px 12px}
.comparison-product img{display:block;width:100%;height:160px;object-fit:contain;margin:0 auto 16px}
.comparison-product h3{font-size:16px;margin:0;overflow-wrap:anywhere}
.comparison-actions{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 12px}
.comparison-actions button{margin:0}.comparison-actions [hidden]{display:none}
#overlay-status:empty{display:none}

/* Multi-round additions preserve the existing page and assistant layout. */
.round-progress{font-size:.84rem;font-weight:650;color:#36558a;margin-bottom:.65rem}
.screen-radio-list input[type=checkbox]{width:18px;height:18px;accent-color:#2457cc;flex:none}
.screen-radio-list label:has(input:disabled){opacity:.55}

.steps.two-rounds{max-width:760px}.steps.two-rounds .step-number{flex-shrink:0}