@font-face{font-family:Classroom Display;src:url('assets/display-title.ttf') format('truetype');font-weight:900;font-display:swap}
:root{--paper:#fff;--white:#fff;--ink:#11131a;--muted:#7b8192;--line:#e6e8f0;--green:#4355fa;--sage:#f2f3ff;--orange:#ff792f;--peach:#fff3eb;--serif:var(--sans);--sans:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;--blue:#4355fa;--soft-blue:#f5f6ff}
body{background:#fff;color:var(--ink);font-size:16px}h1,h2,h3{font-family:var(--sans);letter-spacing:-.025em}h1{font-weight:800}h2{font-weight:750}h3{font-weight:650}button,a{ -webkit-tap-highlight-color:transparent}.topbar{height:84px;padding:0 40px;max-width:1600px;margin:auto;background:#fff;border:0;backdrop-filter:none;display:grid;grid-template-columns:320px 1fr 145px;gap:20px}.brand{gap:17px;font-size:23px;letter-spacing:-.025em;font-weight:750;white-space:nowrap}.brand-mark{width:49px;height:49px;border-radius:0;object-fit:contain;background:none}.top-actions{justify-content:flex-end}#teacher-toggle{font-size:14px;color:#151720;border:1px solid #151720;border-radius:14px;padding:12px 21px;min-width:112px;background:#fff;box-shadow:none;font-weight:650}#teacher-toggle:hover{background:#f5f5ff}#teacher-toggle[aria-pressed=true]{background:#11131a;color:#fff}#main-nav{display:flex;flex-direction:row;align-items:center;gap:39px;justify-content:flex-start;height:84px}.nav-link{padding:16px 0;display:block;line-height:1.5;font-size:16px;border:0;border-radius:0;background:transparent;position:relative;font-weight:500;color:#4a4d59;white-space:nowrap}.nav-link:hover{background:transparent;color:var(--blue)}.nav-link[aria-current=page]{background:transparent;color:var(--blue);border:0;font-weight:750}.nav-link[aria-current=page]:after{content:'';position:absolute;bottom:3px;left:0;right:0;height:3px;background:var(--blue);border-radius:2px}.nav-more{position:relative;z-index:35}.nav-more summary{list-style:none;display:flex;align-items:center;gap:6px;color:#656979;font-size:14px;padding:16px 0;cursor:pointer;white-space:nowrap}.nav-more summary::-webkit-details-marker{display:none}.nav-more summary .ui-icon{width:12px;height:12px;opacity:.6}.nav-more summary.more-active{color:var(--blue);font-weight:650}.nav-more-menu{position:absolute;top:57px;right:-20px;min-width:178px;padding:8px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 30px #3a40a714;border-radius:12px}.nav-more-menu a{display:block;padding:11px 13px;text-decoration:none;font-size:13px;border-radius:7px;white-space:nowrap}.nav-more-menu a:hover,.nav-more-menu a:focus-visible{background:var(--soft-blue);color:var(--blue)}.shell{display:block;max-width:1488px;margin:0 auto}.rail{display:none}.progress-accessory{display:none}#main{max-width:1260px;margin:0 auto;padding:40px 40px 70px}body[data-view=overview] #main{max-width:1488px;padding:0 40px 42px}.ui-icon{display:inline-block;width:20px;height:20px;object-fit:contain;flex-shrink:0;vertical-align:middle}.button{border-radius:10px;border-color:#e2e4ef;padding:11px 18px;background:#fff;font-weight:600;gap:10px;min-height:43px}.button:hover{background:#f3f4ff;border-color:#a4acf8;transform:translateY(-1px)}.button.primary{background:#11131a;color:#fff;border-color:#11131a}.button.primary:hover{background:#2c2e3c}.button.primary>.ui-icon{filter:brightness(0) invert(1)}.button.ghost{background:#fff}.button[aria-pressed=true]{background:var(--blue);border-color:var(--blue);color:#fff}.button.orange{background:var(--orange);border-color:var(--orange)}.button.compact{min-height:34px;padding:8px 12px}.orange-icon{filter:invert(53%) sepia(96%) saturate(2150%) hue-rotate(340deg) brightness(108%) contrast(102%)!important}.hero{display:grid;grid-template-columns:47.5% 52.5%;gap:0;min-height:600px;align-items:center;padding:0;border:0;position:relative}.hero-copy{padding-top:17px;z-index:1}.hero-eyebrow{display:flex;align-items:center;gap:15px;margin-bottom:24px;white-space:nowrap}.hero-eyebrow>span{display:inline-flex;background:var(--blue);color:#fff;padding:4px 15px;border-radius:11px;font-size:16px;font-weight:650;line-height:1.6}.hero .hero-eyebrow p{margin:0;font-size:17px;line-height:1.6;color:#7d8293;max-width:none}.hero .hero-title{font-family:Classroom Display,var(--sans);font-size:clamp(48px,5.4vw,80px);font-weight:900;line-height:1.42;letter-spacing:-.045em;margin:0;color:#050609;max-width:none;white-space:nowrap}.hero-title>span{display:block}.ai-word{position:relative;display:inline-block}.ai-word>img{position:absolute;width:112%;height:22px;object-fit:contain;left:-1%;bottom:-3px;pointer-events:none}.hero p.hero-description{color:#7d8293;font-size:18px;line-height:1.85;max-width:650px;margin:20px 0 0;letter-spacing:.01em}.hero-actions{display:flex;align-items:center;gap:30px;margin-top:34px}.hero-actions>.button{font-size:22px;font-weight:750;min-height:69px;padding:17px 27px;gap:27px;border-radius:13px}.hero-actions>.button .ui-icon{width:31px;height:31px}.hero-link{display:flex;align-items:center;gap:15px;font-size:20px;font-weight:650;text-decoration:none;padding:15px 0;white-space:nowrap}.hero-link span{border-bottom:2px solid #4355fa;padding-bottom:5px}.hero-link .ui-icon{width:19px;height:19px}.hero-link:hover{color:var(--blue)}.hero-illustration{align-self:center;margin-left:0;margin-right:-20px;pointer-events:none}.hero-illustration>img{width:100%;height:auto;object-fit:contain}.journey{background:#f8f8ff;border-radius:20px;padding:30px 36px 25px;margin:0 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time{color:var(--orange);font-size:14px}.journey-bottom{display:flex;align-items:flex-end;justify-content:space-between;margin-top:17px;gap:20px}.journey-current{display:flex;gap:13px;align-items:center;text-align:left;border:0;border-radius:14px;background:#fff0e7;padding:12px 17px;max-width:430px;color:var(--ink)}.journey-current:hover{background:#ffe5d6}.current-icon{display:grid;place-items:center;width:39px;height:39px;min-width:39px;border-radius:50%;background:#ff792f}.current-icon>.ui-icon{width:25px;height:25px;filter:invert(1)}.journey-current small{color:var(--orange);display:block;font-size:12px;line-height:1.6}.journey-current strong{display:block;font-size:12px;font-weight:500;line-height:1.65}.local-label{font-size:11px;color:#8b8f9d}.overview-details{display:grid;grid-template-columns:1fr 1fr;gap:65px;margin:42px auto 0;max-width:1120px}.overview-details h3{margin-top:13px;font-size:23px}.overview-details .plain-block{border-color:var(--line);padding-top:25px}.overview-details .button{margin-top:20px}.overview-details li{margin:8px 0}.overview-details p,.overview-details ol{font-size:14px;line-height:1.9;color:var(--muted)}.overview-details+.callout{max-width:1120px;margin:25px auto}.tag{background:#eeefff;border:0;border-radius:7px;color:var(--blue);font-size:11px;padding:5px 10px}.tag.orange{background:#fff0e5;color:#e87031}.eyebrow{color:var(--blue);font-size:11px;letter-spacing:.12em}.page-head h1{font-size:42px;font-weight:800;line-height:1.35}.page-head>p{font-size:15px;line-height:1.85;color:var(--muted)}.phase-strip{border:0;border-radius:13px;background:#f7f8fd;padding:15px 21px;margin-bottom:27px;gap:18px}.phase-strip .phase-num{font-family:var(--sans);font-weight:700;font-size:21px;color:var(--blue)}.phase-strip b{font-weight:650}.teacher-note{background:#fff5ed;border:1px dashed #ffbb91;border-radius:12px;color:#8c6147;padding:16px 22px}.teacher-note b{color:#df6e31}.teacher-pill{color:var(--orange)}.map-board{border:1px solid #e7e9f4;border-radius:20px;background:#fcfcff;padding:32px}.map-root{background:var(--blue);border-radius:15px;font-family:var(--sans);font-weight:650;font-size:22px;padding:19px 39px}.map-node{border:1px solid #e0e4fa;border-radius:12px;background:#fff;padding:18px 15px}.map-node[aria-pressed=true]{background:#eef0ff;color:var(--blue);border-color:#808bfa;box-shadow:0 3px 15px #4355fa0a}.map-node:hover{border-color:#6674ff}.map-node:before{border-left-color:#b9c0fe}.map-branches:before,.map-root:after{background-color:#c7cefb;border-color:#c7cefb}.map-node strong{font-size:17px}.map-node .node-index{color:var(--blue);opacity:.8}.map-node .node-verb{font-size:11px}.map-node ul{font-size:12px;color:#81889c}.node-detail{padding-top:27px;border-bottom:0}.detail-label{color:var(--blue)}.node-quote{font-family:var(--sans);font-size:18px;border-color:var(--blue);line-height:1.9}.detail-two{gap:45px}.callout{background:#f7f7fd;color:#767b8d;border-left:3px solid #7a88f7;border-radius:0 9px 9px 0;padding:18px 21px}.case-list{gap:7px}.case-tab{padding:15px 14px;border-radius:10px}.case-tab[aria-selected=true]{background:#f0f2ff;border-color:#e1e5ff;color:var(--blue)}.case-tab:hover{background:#f5f6ff}.case-tab strong{font-weight:550}.case-tab[aria-selected=true] strong{color:var(--blue);font-weight:700}.case-tab small{font-size:11px}.case-panel h2{font-family:var(--sans);font-weight:750;font-size:29px}.case-panel .lead{line-height:1.8}.user-quote{background:#fff5ee;border-left:3px solid var(--orange);border-radius:0 12px 12px 0;font-family:var(--sans);font-size:18px;line-height:1.9}.user-quote small{color:#e57536}.mini-heading{color:var(--blue)}.answer-box{background:#f3f4ff;border-radius:12px;color:#626a87;padding:20px}.step-log li:before{background:#eeefff;border-color:#d8ddff;color:var(--blue)}.step-log li{border-left-color:#e3e6ff}.step-log p{font-size:14px;line-height:1.85}.case-shot{background:#f5f6fb;border:0;border-radius:15px;padding:14px}.case-shot img{border-radius:8px}.case-shot figcaption{line-height:1.85}.disclosure{padding:20px 0;border-color:#e9eaf1}.disclosure summary{font-size:15px;line-height:1.7}.disclosure summary:after{color:var(--blue)}.prompt-box{border-radius:12px;background:#f7f8fd;border-color:#edf0f8;line-height:2}.tech-rail{color:#6e7487;line-height:1.9}.tech-rail b{color:var(--blue);font-size:11px}.acceptance{font-size:13px;line-height:1.9}.acceptance li:before{color:var(--blue)}.experiment-card{border-radius:16px;border-color:#e4e7f7;padding:25px}.experiment-card p{line-height:1.9}.radio-list{gap:9px}.radio-list label{background:#f7f8fd;border-radius:10px;padding:14px;align-items:center}.radio-list label:has(input:checked){border-color:#8c96fa;background:#f0f2ff}.feedback{border-left:3px solid var(--orange);background:#fff3eb;border-radius:0 9px 9px 0}.feedback.success{border-color:var(--blue);background:#f1f2ff}.preview-panel{background:#f4f5fc;border:0;border-radius:20px;padding:25px}.sim-label{color:#9297ab}.phone{border-color:#20232b;box-shadow:0 12px 28px #35375a10}.phone h4{font-family:var(--sans)}.width-meter{color:var(--blue)}.code{background:#24283f;color:#e7eafe;border-radius:11px;font-size:12px;line-height:1.9}.paste-zone{border-color:#9da6f1;border-radius:12px;line-height:1.9}.form-grid{gap:21px}.field{font-size:14px;font-weight:650;line-height:1.7}.field small{font-size:12px;margin-bottom:9px;color:#9096a8}.field input,.field textarea{border-color:#e4e7f2;border-radius:10px;padding:13px 16px;font-size:14px;background:#fdfdff;line-height:1.85}.field textarea:focus{background:white;border-color:#8b95fc;outline-color:#a5afff}.field textarea::placeholder{color:#a8adbc}.worksheet-title{margin-top:34px;gap:15px}.worksheet-title>span{font-family:var(--sans);font-size:22px;font-weight:650;color:var(--blue)}.worksheet-title h2,.form-section h2{font-weight:750;font-size:24px}.note-paper{border:1px solid #e6e9f6;border-radius:17px;padding:29px}.check-item{border-color:#e5e8f5;border-radius:10px;line-height:1.9;background:#f9faff}.check-item:has(input:checked){background:#f0f2ff;border-color:#a4adff}input[type=radio],input[type=checkbox]{accent-color:var(--blue)}.glossary-item{border-top-color:#d7ddff}.glossary-item h3{font-family:var(--sans);font-weight:750}.glossary-item .example{border-left-color:#ffa46c}.stack-diagram div{border:1px solid #e3e6fb;background:#f6f7ff;border-radius:12px;font-weight:600}.badge-demo{border-radius:12px}.choice-circle{background:#f9dfcd}.class-clock{background:#151722;border-color:#30334c;border-radius:12px;box-shadow:0 8px 25px #22253c1a}.class-clock button{border-color:#555971}.class-clock small{color:#c7c9de}#toast{background:#242944;border-color:#4d5778;border-radius:12px;font-size:13px}.lesson-footer{font-size:11px;color:#9b9fac;border-color:#eef0f6;line-height:1.8;margin-top:36px;gap:20px}.overview-details~.lesson-footer{max-width:1120px;margin-left:auto;margin-right:auto}dialog{border-color:#e5e8f4;border-radius:17px;padding:25px}dialog::backdrop{background:#252c4c9e;backdrop-filter:blur(5px)}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #8b98ff;outline-offset:4px}
@media(min-width:1600px){.hero .hero-title{font-size:80px}.hero{min-height:625px}}
@media(max-width:1280px){.topbar{grid-template-columns:290px 1fr 130px;padding:0 30px;gap:15px}.brand{font-size:21px}.brand-mark{height:43px;width:43px}#main-nav{gap:29px}.hero .hero-title{font-size:clamp(49px,5.4vw,70px)}.hero{min-height:535px}.hero-eyebrow{gap:12px;margin-bottom:20px}.hero .hero-eyebrow p{font-size:14px}.hero-eyebrow>span{font-size:14px}.hero p.hero-description{font-size:16px;line-height:1.8}.hero-actions{margin-top:26px;gap:24px}.hero-actions>.button{font-size:19px;padding:15px 23px;gap:20px;min-height:61px}.hero-link{font-size:17px;gap:11px}.journey{padding:29px}.journey-heading h2{font-size:27px}.journey-stages{gap:16px}.journey-step-copy p{font-size:11px}.journey-step-copy h3{font-size:17px}.journey-step.is-current .journey-step-copy{margin-left:56px}.journey-step.is-current .journey-number{width:46px;height:46px}.journey-number{width:37px;height:37px;font-size:17px}.journey-step-copy time{font-size:12px}.journey-heading>p{font-size:14px;margin-right:9px}.hero-illustration{margin-right:-10px}}
@media(max-width:1050px){.topbar{grid-template-columns:235px 1fr 115px;padding:0 24px;gap:12px;height:77px}.brand{font-size:18px;gap:10px}.brand-mark{height:38px;width:38px}#main-nav{height:77px;gap:25px}.nav-link{font-size:14px}.nav-more summary{font-size:12px}.nav-more summary .ui-icon{width:10px;height:10px}#teacher-toggle{font-size:12px;min-width:94px;padding:10px 14px;border-radius:12px}body[data-view=overview] #main{padding:0 25px 40px}.hero{min-height:480px;grid-template-columns:49% 51%;gap:0}.hero .hero-title{font-size:5.3vw}.hero .hero-eyebrow p{font-size:12px}.hero-eyebrow{gap:9px}.hero-eyebrow>span{font-size:12px;padding:4px 10px}.hero p.hero-description{font-size:14px;line-height:1.9}.wide-break{display:none}.hero-actions{gap:17px;margin-top:25px}.hero-actions>.button{font-size:16px;gap:12px;padding:15px 18px;min-height:54px}.hero-actions>.button .ui-icon{width:25px;height:25px}.hero-link{font-size:15px;gap:10px}.hero-illustration{margin-right:-5px}.journey{margin:0 -10px;padding:27px 25px}.journey-heading h2{font-size:24px}.journey-heading>p{font-size:12px}.journey-stages{grid-template-columns:repeat(7,minmax(0,1fr));gap:11px;margin-top:30px}.journey-step{padding-left:0}.journey-step.is-current .journey-step-copy{margin-left:0;margin-top:0}.journey-step.is-current .journey-number{width:37px;height:37px}.journey-step-copy time{font-size:11px}.journey-step.is-current time{font-size:11px}.journey-step-copy h3{font-size:15px}.journey-number{margin-bottom:13px;font-size:16px}.journey-step-copy p{font-size:10px;line-height:1.8}.journey-heading{gap:15px}.journey-eyebrow{font-size:10px;letter-spacing:.3em}.journey-current{padding:10px 13px;max-width:375px}.journey-current small,.journey-current strong{font-size:11px}.current-icon{width:32px;height:32px;min-width:32px}.current-icon>.ui-icon{width:21px;height:21px}#main{padding:33px 28px 55px}.overview-details{gap:35px;margin-top:28px}.overview-details h3{font-size:20px}.page-head h1{font-size:34px}.map-node strong{font-size:15px}.map-node ul{font-size:11px}.map-board{padding:27px 20px}.detail-two{gap:30px}.topbar:has(.nav-more[open]){z-index:50}}
@media(max-width:800px){.topbar{height:auto;min-height:112px;grid-template-columns:1fr auto;grid-template-rows:64px 43px;gap:0;padding:0 23px;position:sticky}.brand{font-size:19px}.brand-mark{height:36px;width:36px}#main-nav{grid-row:2;grid-column:1/-1;height:43px;gap:32px;justify-content:flex-start;overflow:visible}.nav-link{font-size:14px;padding:8px 0 12px}.nav-link[aria-current=page]:after{bottom:1px;height:2px}.nav-more summary{font-size:12px;padding:10px 0}.nav-more-menu{top:39px;right:-52px}.top-actions{grid-column:2;grid-row:1}#teacher-toggle{padding:8px 13px;min-width:88px;border-radius:11px}.hero{min-height:auto;grid-template-columns:1fr;padding:35px 0 0;gap:18px}.hero-copy{padding-top:0}.hero .hero-title{font-size:clamp(39px,7.6vw,62px);line-height:1.45;letter-spacing:-.04em}.hero p.hero-description{font-size:16px;max-width:640px;line-height:1.85;margin-top:19px}.hero .hero-eyebrow p{font-size:14px}.hero-eyebrow>span{font-size:14px}.hero-actions{margin-top:24px;gap:25px}.hero-actions>.button{font-size:19px;padding:16px 24px;gap:19px;min-height:61px}.hero-link{font-size:18px}.hero-illustration{max-width:625px;width:100%;margin:0 auto}.hero-illustration>img{max-height:490px;object-fit:contain}.journey{margin:10px -10px 0;padding:25px}.journey-heading>p{display:none}.journey-heading h2{font-size:25px}.journey-stages{grid-template-columns:repeat(4,1fr);gap:28px 18px;margin-top:28px}.journey-line{display:none}.journey-step-copy h3{font-size:17px}.journey-step-copy p{font-size:11px;max-width:140px}.journey-step-copy time,.journey-step.is-current time{font-size:12px}.journey-number{width:38px;height:38px;font-size:17px;margin-bottom:12px}.journey-step.is-current .journey-number{width:38px;height:38px}.journey-current{max-width:420px}.journey-bottom{margin-top:25px}.journey-current strong,.journey-current small{font-size:12px}.local-label{display:inline}.overview-details{grid-template-columns:1fr;gap:0;max-width:600px}.overview-details .plain-block{padding:27px 0 10px}.overview-details p,.overview-details ol{font-size:14px}.page-head h1{font-size:32px}.page-head>p{font-size:14px}.phase-strip{padding:15px 18px}.case-layout{grid-template-columns:1fr}.case-list{flex-direction:row;overflow-x:auto}.case-tab{min-width:180px}.map-branches{grid-template-columns:1fr 1fr;gap:12px}.map-root{font-size:20px}.map-node ul{font-size:12px}.lab-layout,.detail-two,.two-col{grid-template-columns:1fr}.preview-panel{order:-1}.note-paper{padding:24px}.field input,.field textarea{font-size:14px}.glossary-grid{grid-template-columns:1fr 1fr}.button-row{align-items:center}.case-panel h2{font-size:27px}}
@media(max-width:480px){.topbar{min-height:107px;padding:0 19px;grid-template-rows:62px 43px}.brand{font-size:17px;gap:10px}.brand-mark{height:34px;width:34px}#main-nav{gap:27px;height:43px}.nav-link{font-size:13px}.nav-more summary{font-size:11px;gap:4px}#teacher-toggle{font-size:11px;min-width:80px;padding:8px 10px;border-radius:10px}.nav-more-menu{right:-6px;min-width:166px}.shell{width:100%}#main{padding:28px 20px 45px}body[data-view=overview] #main{padding:0 20px 32px}.hero{padding-top:27px;gap:12px}.hero-eyebrow{gap:10px;margin-bottom:22px}.hero-eyebrow>span{font-size:12px;padding:4px 10px;border-radius:8px}.hero .hero-eyebrow p{font-size:11px;white-space:normal;line-height:1.6;letter-spacing:0}.hero .hero-title{font-size:8.8vw;line-height:1.48;letter-spacing:-.045em}.ai-word>img{height:11px;bottom:-2px}.hero p.hero-description{font-size:13px;line-height:1.9;max-width:none;margin-top:17px}.hero-actions{gap:21px;margin-top:23px}.hero-actions>.button{font-size:15px;padding:13px 17px;gap:14px;min-height:51px;border-radius:10px}.hero-actions>.button .ui-icon{width:23px;height:23px}.hero-link{font-size:13px;gap:8px;padding:10px 0}.hero-link .ui-icon{height:15px;width:15px}.hero-link span{padding-bottom:4px}.hero-illustration{margin-top:0}.hero-illustration>img{max-height:350px}.journey{margin:8px -7px 0;padding:23px 19px;border-radius:17px}.journey-heading h2{font-size:21px;line-height:1.6;max-width:290px;letter-spacing:-.025em}.journey-eyebrow{font-size:9px;letter-spacing:.29em;margin-bottom:8px}.journey-stages{grid-template-columns:1fr 1fr;gap:28px 21px;margin-top:25px}.journey-step{display:grid;grid-template-columns:37px 1fr;gap:11px;align-items:start;padding:0}.journey-number,.journey-step.is-current .journey-number{width:34px;height:34px;font-size:15px;margin:0}.journey-step-copy time,.journey-step.is-current time{font-size:10px}.journey-step-copy h3{font-size:15px;margin:2px 0 6px;line-height:1.5}.journey-step-copy p{font-size:10px;line-height:1.85;max-width:none}.journey-step.is-current .journey-step-copy{margin:0}.journey-bottom{display:block;margin-top:25px}.journey-current{padding:10px 11px;border-radius:11px;max-width:100%;width:100%;gap:10px}.journey-current strong,.journey-current small{font-size:10px;line-height:1.8}.current-icon{width:30px;height:30px;min-width:30px}.journey-bottom .local-label{display:block;text-align:right;margin-top:15px;font-size:9px}.overview-details{margin-top:26px}.overview-details h3{font-size:20px}.overview-details p,.overview-details ol{font-size:13px}.overview-details .button{font-size:12px;margin-top:15px}.page-head h1{font-size:29px;line-height:1.45;letter-spacing:-.03em}.page-head>p{font-size:13px}.eyebrow{font-size:10px;letter-spacing:.06em;margin-bottom:12px}.phase-strip{gap:13px;padding:13px 14px;border-radius:11px;align-items:center}.phase-strip .phase-num{font-size:17px;white-space:nowrap}.phase-strip b{font-size:12px}.phase-strip small{font-size:10px}.phase-strip .button{font-size:10px;padding:8px;min-height:33px;max-width:84px}.teacher-note{padding:13px 15px;font-size:12px}.map-board{padding:21px 15px;border-radius:15px}.map-root{font-size:17px;padding:15px;border-radius:10px}.map-root small{font-size:10px!important}.map-node{padding:15px 11px;border-radius:10px}.map-node .node-index{font-size:10px}.map-node strong{font-size:15px}.map-node .node-verb{font-size:10px}.map-node ul{font-size:10px}.node-detail{padding-top:24px}.detail-two{gap:17px;margin-top:18px}.detail-two h3{font-size:18px}.detail-two p{font-size:13px;line-height:1.9}.node-quote{font-size:16px}.callout{font-size:12px;padding:15px}.case-tab{min-width:166px;padding:13px}.case-tab strong{font-size:12px}.case-panel h2{font-size:25px;line-height:1.4}.case-panel .lead{font-size:13px}.user-quote{padding:16px;font-size:16px;line-height:1.9}.case-shot{padding:10px;border-radius:12px}.case-shot figcaption{font-size:10px}.disclosure summary{font-size:13px}.prompt-box{padding:15px;font-size:12px}.experiment-card{padding:20px}.experiment-card h3{font-size:18px}.experiment-card p{font-size:13px}.radio-list label{font-size:12px}.preview-panel{padding:20px 15px;border-radius:16px}.paste-zone{font-size:13px}.note-paper{padding:20px 17px;border-radius:13px}.section-line h2{font-size:21px}.section-line{gap:10px}.draft-saved{font-size:10px}.worksheet-title{gap:10px}.worksheet-title>span{font-size:20px}.worksheet-title h2{font-size:20px}.field{font-size:13px}.field small{font-size:11px;line-height:1.8}.field input,.field textarea{font-size:13px;padding:12px;min-height:90px}.check-grid{grid-template-columns:1fr}.check-item{font-size:12px}.glossary-grid{grid-template-columns:1fr}.stack-diagram div{padding:18px;font-size:14px}.button-row{gap:9px}.button{font-size:12px;padding:11px 14px;min-height:40px}.button .ui-icon{width:16px;height:16px}.class-clock{right:12px;bottom:12px;max-width:calc(100% - 24px);gap:12px}.class-clock strong{font-size:21px}.class-clock small{font-size:9px}.class-clock button{font-size:10px}.lesson-footer{font-size:10px;display:block;margin-top:30px}.lesson-footer>span{display:block;margin-top:7px}.ui-icon{width:18px;height:18px}}
@media print{.topbar,.progress-accessory{display:none!important}.shell{display:block}#main,body[data-view=overview] #main{max-width:none;padding:0}.hero{display:block;min-height:0;padding:0}.hero .hero-title{font-size:30pt}.hero .hero-description{font-size:11pt}.hero-illustration{display:none}.journey{margin:20px 0;background:white;padding:0}.journey-line{display:none}.journey-stages{grid-template-columns:repeat(4,1fr)}.journey-step-copy p{font-size:9pt}.journey-step.is-current .journey-step-copy{margin:0}.journey-bottom{display:none}.note-paper{padding:0;border:0}.hero-eyebrow{margin-bottom:10px}.nav-more{display:none}.field input,.field textarea{display:none}.print-value{white-space:pre-wrap}.teacher-note{break-inside:avoid}.journey-number{border:1px solid #ccc;background:white!important;color:black!important}.page-head h1{font-size:23pt}}

/* Fidelity pass 2: match the selected mock's composition. */
@media(min-width:1281px){
 .hero{height:600px;min-height:600px}
 .hero-copy{padding-top:9px}
 .hero .hero-title{font-size:84px;line-height:1.30;letter-spacing:-.015em}
 .hero p.hero-description{margin-top:38px}
 .hero-actions>.button{min-width:260px;font-size:24px;padding:15px 27px;gap:26px}
 .hero-link{font-size:22px;line-height:1.5}
 .hero-illustration{height:600px;overflow:hidden;position:relative}
 .hero-illustration>img{position:absolute;left:-5%;top:-21px;width:110%;max-width:none;height:auto;object-fit:contain}
 .journey-stages{grid-template-columns:var(--journey-tracks,1.6fr repeat(6,1fr));gap:21px}
 .journey-step{align-self:start}
}
:root{--blue:#3c55ff;--green:#3c55ff}

@media(min-width:1281px){
 .hero-illustration>img{top:-40px}
 .journey[data-current-stage="0"]{padding-bottom:40px}
 .journey[data-current-stage="0"] .journey-bottom{margin-top:-20px;position:relative;z-index:2}
 .journey[data-current-stage="0"] .journey-current{width:280px;max-width:280px}
 .journey[data-current-stage="0"] .journey-bottom .local-label{transform:translateY(20px)}
}

/* Keep action labels intact at narrow widths. */
@media(max-width:480px){.hero-actions{flex-wrap:wrap;column-gap:20px;row-gap:8px}.hero-actions>.button,.hero-link{white-space:nowrap;flex:0 0 auto}}