/* Useful interior pages within the existing paper, ink and blue composition. */
#sample-tools{padding:clamp(80px,9vw,150px) var(--gutter);background:var(--paper);position:relative;isolation:isolate;scroll-margin-top:110px}
#sample-tools::before{content:"";position:absolute;inset:0 0 auto 48%;height:350px;z-index:-1;pointer-events:none;background:radial-gradient(#294dff25 1.5px,transparent 2px);background-size:25px 25px;mask-image:linear-gradient(110deg,transparent,#000 60%,transparent);-webkit-mask-image:linear-gradient(110deg,transparent,#000 60%,transparent)}
.tool-section-intro{display:grid;grid-template-columns:1fr 2fr;column-gap:6vw;align-items:start;margin-bottom:80px}
.tool-section-intro>.micro{color:#656a71;padding-top:12px;max-width:190px}
.tool-section-intro h2{font-size:clamp(42px,5.2vw,84px);line-height:1.02;letter-spacing:-.055em}
.tool-section-intro h2 em{color:var(--blue)}
.tool-section-intro>p:last-child{grid-column:2;font-size:17px;line-height:1.65;max-width:570px;color:#62676d;margin-top:28px}
.tool-demo{display:grid;grid-template-columns:minmax(235px,.85fr) minmax(0,2fr);gap:clamp(24px,4vw,72px);align-items:start;border-top:1px solid var(--line);padding-top:48px;margin-top:64px}
.tool-demo-number{font-size:11px;letter-spacing:.1em;color:var(--blue)}
.tool-demo-copy h3{font-size:clamp(36px,3.5vw,55px);line-height:1.03;letter-spacing:-.055em;margin:25px 0 22px}
.tool-demo-copy h3 em{color:var(--blue)}
.tool-demo-format{font-size:14px;line-height:1.5;max-width:240px}
.tool-demo-copy dl{margin:30px 0}
.tool-demo-copy dl>div{border-top:1px solid var(--line);padding-top:17px;margin-top:17px}
.tool-demo-copy dt{font-size:10px;letter-spacing:.09em;text-transform:uppercase;color:#636973;margin-bottom:8px}
.tool-demo-copy dd{margin:0;font-size:14px;line-height:1.65;color:#5f656d;max-width:310px}
.tool-demo-copy .pill{font-size:13px;gap:16px;min-height:50px;padding:14px 19px;max-width:100%}
.tool-review-note{font-size:11px;line-height:1.65;color:#666d77;max-width:315px;margin-top:19px}
.tool-spread{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;padding:22px;background:#e3e6ed;border:1px solid #d9dce5;box-shadow:0 24px 44px -35px #243a704a;position:relative}
.tool-spread::after{content:"";position:absolute;pointer-events:none;inset:22px auto 22px 50%;width:13px;background:linear-gradient(90deg,#20346b15,transparent)}
.tool-paper{min-width:0;display:flex;flex-direction:column;background:#fbfcff;padding:24px 21px;box-shadow:0 2px 0 #b8bdc9;min-height:590px}
.tool-paper:first-child{background:linear-gradient(90deg,#fbfcff 95%,#f0f2f7)}
.tool-page-running{font-size:8px;line-height:1.45;letter-spacing:.07em;display:flex;gap:10px;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid #cdd2dd;color:#596578}
.tool-page-running span:last-child{color:var(--blue)}
.tool-paper h4{font-size:clamp(24px,2.5vw,37px);letter-spacing:-.04em;line-height:1.04;margin:25px 0 17px}
.tool-paper h4 em{color:var(--blue)}
.tool-paper>p{font-size:11px;line-height:1.6;color:#5a6573}
.tool-small-steps{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:18px}
.tool-small-steps li{display:flex;gap:12px}
.tool-small-steps li>span{font-size:9px;color:var(--blue);padding-top:2px}
.tool-small-steps b{font-size:12px;font-weight:500}
.tool-small-steps p{font-size:11px;line-height:1.6;color:#667180;margin-top:6px}
.tool-paper-prompt{margin-top:24px}
.tool-paper-prompt>b{font-size:11px;font-weight:500;line-height:1.5;display:block}
.tool-writing-lines{display:grid;gap:23px;padding-top:24px}
.tool-writing-lines>span{display:block;height:1px;background:#d8dde7}
.tool-log-table{border-collapse:collapse;width:100%;table-layout:fixed;margin-top:24px}
.tool-log-table th{font-size:8px;font-weight:500;text-align:left;color:#294b9f;border-block:1px solid #a9b6d4;padding:10px 2px;background:#294dff07}
.tool-log-table td{border-bottom:1px solid #d8dde7;height:34px}
.tool-log-table th:first-child{width:28%}.tool-log-table th:nth-child(2),.tool-log-table th:nth-child(3){width:12%}
.tool-paper .tool-table-note{font-size:9px;line-height:1.55;margin-top:12px}
.tool-page-colophon{margin-top:auto;padding-top:28px;display:flex;justify-content:space-between;gap:10px;align-items:center;color:#727f91;font-size:7px;letter-spacing:.05em}
.tool-page-colophon b{font-size:24px;letter-spacing:-.08em;color:#192c58}
.tool-spread-learning{background:#e0e4ef}
.tool-fraction-examples{margin-top:24px;display:grid;gap:13px}
.tool-fraction-examples>div{display:grid;grid-template-columns:minmax(0,1fr) 30px;align-items:center;gap:10px}
.tool-fraction-examples b{font-size:11px;font-weight:400;color:#294dff}
.tool-fraction-bar,.sample-fraction-bar{display:grid;grid-template-columns:repeat(var(--parts),1fr);height:23px;border:1px solid #879de2;background:#f0f3ff;gap:1px}
.tool-fraction-bar>span,.sample-fraction-bar>span{border-right:1px solid #879de2}.tool-fraction-bar>span:last-child,.sample-fraction-bar>span:last-child{border-right:0}
.tool-fraction-bar .filled,.sample-fraction-bar .filled{background:#294dff}
.tool-example-answer{margin-top:24px}
.tool-example-answer>span,.tool-worksheet-step>span{display:block;font-size:8px;letter-spacing:.06em;color:var(--blue);margin-bottom:9px}
.tool-example-answer p{font-size:11px;line-height:1.6;color:#5a6573}
.tool-worksheet-step{margin-top:25px}.tool-worksheet-step>b{font-size:11px;font-weight:400;line-height:1.5;display:block}
.tool-worksheet-step .tool-writing-lines{gap:20px;padding-top:20px}
.tool-section-note{border-top:1px solid var(--line);margin-top:60px;padding-top:24px;font-size:12px;color:#626a76;line-height:1.65;max-width:860px}

/* Full-size practical sample pages inside the existing product reader. */
.sample-practical{background:#fbfcff;color:#172231}
.sample-practical .sample-running,.sample-practical .sample-footer{border-color:#c6cedd;color:#566479}
.sample-practical h3{font-family:var(--sans);font-size:clamp(32px,3.4vw,53px);line-height:1.03}
.sample-practical .sample-deck,.sample-practical .sample-plan p,.sample-practical .sample-prompts p,.sample-practical .sample-row p{color:#526075}
.sample-practical .sample-small{color:#526075;line-height:1.6}
.sample-practical .sample-box,.sample-practical .sample-note{background:#eaf0ff}
.sample-practical .sample-note p{font-size:21px}
.sample-practical .sample-prompts i{border-color:#c6cedd}
.sample-fields{margin-top:30px}.sample-fields>div{margin-top:23px}.sample-fields b{font-size:14px;font-weight:500}.sample-fields p{font-size:12px;color:#637087;line-height:1.6;margin-top:7px}.sample-fields>div>span{display:block;height:1px;background:#c6cedd;margin-top:30px}
.sample-fields.is-compact{margin-top:18px}
.sample-session{margin-top:30px}.sample-session table{width:100%;table-layout:fixed;border-collapse:collapse}.sample-session th{font-size:10px;color:#294b9f;text-align:left;font-weight:500;background:#eaf0ff;padding:11px 5px;border-block:1px solid #c0cbea}.sample-session td{height:48px;border-bottom:1px solid #c6cedd}.sample-session th:first-child{width:30%}.sample-session th:nth-child(2),.sample-session th:nth-child(3){width:12%}.sample-session>p{font-size:11px;color:#60708b;line-height:1.6;margin-top:14px}
.sample-fractions{margin:30px 0 0}.sample-fractions figcaption{font-size:17px;font-weight:600;margin-bottom:16px}.sample-fraction{display:grid;grid-template-columns:1fr 130px;gap:15px;align-items:center;margin-top:12px}.sample-fraction>span{font-size:11px;color:#54688d}
@media(min-width:1650px){.tool-paper{padding:32px;min-height:670px}.tool-paper>p,.tool-small-steps p,.tool-example-answer p,.tool-worksheet-step>b,.tool-paper-prompt>b{font-size:13px}.tool-small-steps b{font-size:14px}.tool-log-table th{font-size:10px}.tool-log-table td{height:43px}}
@media(max-width:1100px){.tool-demo{grid-template-columns:1fr;gap:35px}.tool-demo-copy{display:grid;grid-template-columns:1fr 1fr;column-gap:35px}.tool-demo-number{grid-column:1/-1}.tool-demo-copy h3{grid-column:1;grid-row:2;font-size:44px}.tool-demo-format{grid-column:1;grid-row:3}.tool-demo-copy dl{grid-column:2;grid-row:2/5;margin:7px 0 0}.tool-demo-copy .pill{grid-column:1;justify-self:start;margin-top:24px}.tool-review-note{grid-column:1/-1;max-width:680px;margin-top:24px}.tool-spread{max-width:920px}.tool-paper{padding:32px;min-height:620px}.tool-paper h4{font-size:34px}.tool-paper>p,.tool-small-steps p,.tool-example-answer p,.tool-worksheet-step>b,.tool-paper-prompt>b{font-size:13px}.tool-small-steps b{font-size:14px}.tool-page-running{font-size:10px}.tool-log-table th{font-size:10px}.tool-page-colophon{font-size:9px}.tool-small-steps{gap:22px}}
@media(max-width:600px){#sample-tools{padding:78px 22px}.tool-section-intro{display:block;margin-bottom:42px}.tool-section-intro>.micro{max-width:none;font-size:10px;padding:0;margin-bottom:24px}.tool-section-intro h2{font-size:43px}.tool-section-intro>p:last-child{font-size:15px;margin-top:24px}.tool-demo{padding-top:30px;margin-top:42px;gap:28px}.tool-demo-copy{display:block}.tool-demo-copy h3{font-size:42px;margin:22px 0}.tool-demo-format{font-size:14px;max-width:none}.tool-demo-copy dl{margin:25px 0}.tool-demo-copy dd{max-width:none;font-size:14px}.tool-demo-copy .pill{margin-top:0}.tool-review-note{font-size:12px;margin-top:20px}.tool-spread{display:flex;flex-direction:column;padding:12px;gap:14px}.tool-spread::after{display:none}.tool-paper,.tool-paper:first-child{padding:24px 20px;min-height:0;background:#fbfcff}.tool-paper h4{font-size:33px}.tool-paper>p,.tool-small-steps p,.tool-example-answer p,.tool-worksheet-step>b,.tool-paper-prompt>b{font-size:13px}.tool-page-running{font-size:9px}.tool-page-colophon{margin-top:28px;padding-top:18px;border-top:1px solid #d8dde7}.tool-log-table th{font-size:9px}.tool-log-table td{height:38px}.tool-paper .tool-table-note{font-size:11px}.tool-page-colophon{font-size:8px}.tool-section-note{font-size:12px;margin-top:38px}.sample-fraction{grid-template-columns:1fr 112px;gap:12px}.sample-session th{font-size:9px;padding-inline:3px}.sample-practical h3{font-size:35px}}
@media(max-width:360px){#sample-tools{padding-inline:16px}.tool-spread{padding:9px}.tool-paper{padding:22px 16px}.tool-paper h4{font-size:29px}.tool-section-intro h2{font-size:37px}.tool-demo-copy h3{font-size:38px}.tool-log-table th{font-size:8px}}