.lesson-reader{--cream:#faf7ef;--paper:#faf7ef;background:var(--cream);color:#18283d;font-family:'Hiragino Kaku Gothic ProN','Yu Gothic',Meiryo,sans-serif}
.lesson-reader .quest-section{border:0;box-shadow:none;background:transparent;margin-bottom:64px;overflow:visible}
.lesson-reader .section-top{background:transparent;border-bottom:2px solid #18283d;padding:16px 26px 14px;gap:14px}.lesson-reader .section-top>span:nth-child(2){font-size:12px;color:#52716e}.lesson-reader .quest-mark{background:#f5da70;color:#18283d;border:2px solid #18283d;min-width:44px;min-height:36px;display:flex;align-items:center;justify-content:center;border-radius:50%;font-weight:800}.lesson-reader .section-body{padding:32px 26px 36px}.lesson-reader h2{font-size:clamp(26px,2.7vw,37px);line-height:1.5;letter-spacing:-.04em;margin-bottom:28px}.lesson-reader h3{font-size:21px;line-height:1.6}.lesson-reader .p{font-size:16px;line-height:1.95;margin:20px 0}.lesson-reader .note{font-size:12px;line-height:1.85}.lesson-reader .chapter{color:#008b89;font-size:13px}.lesson-reader .next-step{background:transparent;border-top:1px solid #bac1ba;padding:18px 26px}.lesson-reader .page-count{color:#687676}
.lesson-reader .stat-pair{gap:30px;margin:30px 0 18px}.lesson-reader .stat-pair>div{border:0;background:none!important;box-shadow:none;padding:0;border-radius:0}.lesson-reader .stat-pair strong{font-family:inherit;font-size:clamp(44px,6vw,76px);letter-spacing:-.055em;color:#008b89;line-height:1.2}.lesson-reader .stat-pair>div+div strong{color:#18283d}.lesson-reader .stat-pair small{font-size:14px}.lesson-reader .stat-pair strong span{font-size:20px}
.lesson-chart{margin:30px 0 36px;padding:20px 0;border-top:1px solid #b8c3bc;border-bottom:1px solid #b8c3bc}.lesson-chart figcaption,.time-picture figcaption{font-size:13px;color:#52716e;line-height:1.8;margin-bottom:18px}.chart-row{display:grid;grid-template-columns:140px minmax(40px,1fr) 90px;gap:12px;align-items:center;margin:16px 0}.chart-row>span{font-size:14px;line-height:1.6}.chart-row b{font-size:19px;text-align:right;white-space:nowrap}.chart-track{background:#e1e7df;height:22px;overflow:hidden}.chart-track i{display:block;background:#008b89;height:100%}.chart-row:nth-child(even) .chart-track i{background:#99c9c2}
.data-detail{margin:14px 0 24px;border-bottom:1px solid #bcc5bd}.data-detail>summary,.template-original>summary{cursor:pointer;padding:12px 0;font-size:13px;font-weight:700;color:#52716e}.data-detail[open]{padding-bottom:12px}.lesson-reader .table-scroll{margin:14px 0 22px}.lesson-reader th{background:#deede5}.lesson-reader td,.lesson-reader th{padding:13px 16px}.lesson-reader .callout{background:#e0eee6;border:0;border-left:5px solid #008b89;border-radius:0;box-shadow:none}
.time-picture{margin:30px 0;padding:0}.time-strip{display:flex;min-height:102px;border:2px solid #18283d}.time-strip>div{display:flex;flex-direction:column;justify-content:center;align-items:center;background:#18283d;color:#fff;font-size:15px;text-align:center;line-height:1.7;padding:10px 5px;min-width:0}.time-strip strong{font-size:27px}.time-strip>.time-meeting{background:#f5da70;color:#18283d;font-size:12px}.time-meeting strong{font-size:21px}.time-strip>.time-other{background:#a9d0c6;color:#18283d;font-size:13px}.time-total{font-size:16px;text-align:right;margin:8px 0 25px}.time-total b{font-size:26px;color:#008b89}.time-compare{display:grid;grid-template-columns:1fr 28px 1fr;gap:14px;align-items:center}.time-compare>div{padding:16px 0}.time-compare span{display:block;font-size:13px}.time-compare b{display:block;font-size:40px;line-height:1.4;letter-spacing:-.05em}.time-compare>div:last-child b{color:#008b89}.time-compare small{font-size:13px;letter-spacing:0}.time-compare em{font-style:normal;font-size:12px;color:#687676}.time-compare .compare-arrow{font-size:26px}.lesson-reader .time-checklist{border:1px dashed #008b89;background:#e9f1e7}.lesson-reader .calculator{border:2px solid #18283d;background:#fffdf8;box-shadow:none;border-radius:0}.lesson-reader .worksheet textarea{background:#fffefb;border:1px solid #8baba6;border-radius:0;line-height:1.8}.lesson-reader .worksheet label{font-size:16px}
.method-lesson{display:grid;grid-template-columns:48px 1fr;gap:18px;margin:28px 0 38px;padding-top:22px;border-top:1px solid #b8c3bc}.method-number{width:44px;height:44px;background:#f5da70;border:2px solid #18283d;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:800}.method-lesson h3{margin:0 0 14px}.method-lesson .p{font-size:15px}.before-after{display:grid;grid-template-columns:1fr 20px 1fr;align-items:center;gap:12px;margin:25px 0}.before-after small{font-size:12px;color:#52716e}.before-after b{display:block;font-size:34px;line-height:1.5;letter-spacing:-.04em}.before-after b span{font-size:11px;letter-spacing:0;display:block}.before-after>div:last-child b{color:#008b89}.before-after p{font-size:12px;line-height:1.8;margin:10px 0}.standout-stat{display:flex;align-items:center;gap:25px;border-top:1px solid #b8c3bc;padding:30px 0 10px;margin-top:30px}.standout-stat strong{font-size:80px;line-height:1.2;letter-spacing:-.06em;color:#008b89}.standout-stat strong span{font-size:30px}.standout-stat p{font-size:16px;font-weight:700;line-height:1.8}.workload-visual{border-top:2px solid #18283d;border-bottom:2px solid #18283d;padding:28px 0;margin:30px 0}.workload-visual>span{font-size:14px}.workload-visual strong{display:block;font-size:80px;color:#008b89;letter-spacing:-.06em;line-height:1.5}.workload-visual small{font-size:20px;letter-spacing:0}.workload-visual p{font-size:15px;font-weight:700;margin:0}
.mail-example{margin:20px 0 26px;color:#18283d}.mail-scene{font-size:14px;font-weight:700;color:#008b89;margin:0 0 14px}.mail-window{background:#fff;overflow:hidden;border:1.5px solid #87999a;border-radius:9px;box-shadow:none;max-width:100%}.mail-toolbar{display:flex;align-items:center;gap:10px;line-height:1.5;padding:14px 22px;background:#e5eceb;border-bottom:1px solid #cdd6d3;font-size:13px;font-weight:700}.mail-icon{font-size:20px}.mail-example-tag{margin-left:auto;font-weight:400;font-size:11px;color:#52716e}.mail-address,.mail-subject{padding:13px 22px;line-height:1.75;border-bottom:1px solid #e3e7e4;font-size:13px}.mail-address>span,.mail-subject>span{display:inline-block;width:40px;font-size:12px;color:#687676;flex:0 0 40px}.mail-subject{display:flex;gap:4px}.mail-subject strong{font-weight:700}.mail-body{padding:22px 26px;font-size:14px;line-height:1.95;background:white}.mail-body p{margin:0 0 16px}.mail-body p:last-child{margin-bottom:0}.mail-bottom{display:flex;align-items:center;gap:15px;justify-content:space-between;padding:13px 20px;border-top:1px solid #e3e7e4;font-size:10px;color:#687676}.copy-email{border:1px solid #008b89;background:#008b89;color:#fff;border-radius:4px;padding:7px 12px;font-size:12px;white-space:nowrap}.mail-point{display:flex;gap:12px;font-size:13px;line-height:1.8;margin:15px 0}.mail-point b{color:#008b89;white-space:nowrap}.email-tabs{display:flex;gap:0;border-bottom:2px solid #008b89;margin:25px 0 18px}.email-tabs button{flex:1;background:transparent;border:0;padding:13px 7px;font-size:13px;font-weight:700;color:#52716e;line-height:1.5;cursor:pointer}.email-tabs button[aria-selected=true]{color:#fff;background:#008b89}.template-original{margin-top:28px;border-top:1px solid #bcc5bd}.lesson-reader .template{box-shadow:none;border-radius:0;border:0;border-left:4px solid #9bc8bf;background:#edf2e8}.email-panels [hidden]{display:none}.copy-email:focus-visible,.email-tabs button:focus-visible{outline:3px solid #f5da70;outline-offset:3px}
.lesson-reader .cover-map-link{position:absolute;inset:0 0 0 auto;width:43%;height:100%;display:block;overflow:hidden}.lesson-reader .cover-map-link .cover-map{position:absolute;inset:0;width:100%;height:100%;object-position:68% center}.map-entry-label{position:absolute;bottom:20px;left:20px;right:20px;display:flex;align-items:center;justify-content:space-between;background:#fffdf8;color:#18283d;padding:13px 18px;border:2px solid #18283d;font-size:14px;line-height:1.7;font-weight:800;box-shadow:3px 3px 0 #008b89}.cover-map-link:hover .map-entry-label{background:#f5da70}.cover-map-link:focus-visible{outline:4px solid #008b89;outline-offset:-4px}
.chest-navigation .chapter-links{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:13px;margin:28px 0 0}.chapter-link{display:flex;flex-direction:column;align-items:center;text-align:center;text-decoration:none;color:#18283d;background:#fffdf8;border:2px solid #18283d;padding:24px 12px 17px;gap:14px;transition:background .2s,transform .2s}.chapter-link:hover{transform:translateY(-4px);background:#f8e7a5}.chapter-link:focus-visible{outline:4px solid #008b89;outline-offset:4px}.chapter-link b{font-size:17px;line-height:1.6}.chapter-link small{font-size:12px;line-height:1.7;color:#52716e}.chest-link-action{font-size:12px;font-weight:800;color:#008b89;border-bottom:1px solid #008b89;padding-bottom:3px;margin-top:auto}.email-landing figure{margin:0}.email-landing figure img{display:block;width:100%;height:auto;border:0;box-shadow:none}.email-landing figcaption{font-size:11px;line-height:1.8;color:#687676;margin-top:12px}.email-landing .email-landing-point{border-left:4px solid #008b89;padding-left:16px;margin:24px 0;color:#008b89}.email-read-link{display:inline-block;padding:10px 0;border-bottom:2px solid #008b89;font-size:14px;font-weight:700;color:#008b89;text-decoration:none}
@media(max-width:800px){.lesson-reader .section-body{padding:26px 15px 30px}.lesson-reader .section-top{padding:12px 15px}.lesson-reader .quest-section{margin-bottom:36px}.lesson-reader .cover-map-link{position:relative;width:100%;height:310px}.lesson-reader .cover-map-link .cover-map{position:absolute!important;inset:0;width:100%;height:100%}.map-entry-label{left:16px;right:16px;bottom:16px;font-size:13px;padding:10px 12px}.chart-row{grid-template-columns:108px minmax(35px,1fr) 65px;gap:8px}.chart-row>span{font-size:12px}.chart-row b{font-size:15px}.chart-track{height:18px}.method-lesson{grid-template-columns:34px 1fr;gap:12px}.method-number{width:32px;height:32px;font-size:19px}.method-lesson h3{font-size:19px}.lesson-reader .stat-pair{gap:18px}.lesson-reader .stat-pair strong{font-size:45px}.lesson-reader .stat-pair strong span{font-size:14px}.lesson-reader .stat-pair small{font-size:12px}.time-strip{min-height:90px}.time-strip>div{font-size:13px}.time-strip strong{font-size:22px}.time-strip>.time-meeting{font-size:10px}.time-meeting strong{font-size:17px}.time-strip>.time-other{font-size:11px}.time-other strong{font-size:19px}.time-compare{gap:6px;grid-template-columns:1fr 14px 1fr}.time-compare b{font-size:30px}.time-compare span{font-size:11px}.time-compare small{font-size:10px}.time-compare em{font-size:10px}.before-after{gap:7px;grid-template-columns:1fr 12px 1fr}.before-after b{font-size:25px}.before-after p{font-size:11px}.standout-stat{gap:15px}.standout-stat strong{font-size:63px}.standout-stat p{font-size:13px}.workload-visual strong{font-size:63px}.workload-visual small{font-size:15px}.mail-toolbar{padding:11px 14px}.mail-address,.mail-subject{padding:10px 14px;font-size:12px}.mail-body{padding:20px 16px;font-size:13px;line-height:1.95}.mail-bottom{padding:11px 14px;flex-wrap:wrap;font-size:10px}.mail-point{display:block}.mail-point b{display:block;margin-bottom:4px}.email-tabs button{font-size:11px;padding:12px 4px}.chest-navigation .chapter-links{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.chapter-link:last-child{grid-column:1/-1}.chapter-link b{font-size:15px}.email-landing{grid-template-columns:1fr!important;gap:26px!important}.email-landing h3{font-size:27px!important}}
@media print{.lesson-reader .quest-section{border:0;margin:0;break-before:page}.lesson-reader .section-top{padding:0 0 3mm}.lesson-reader .section-body{padding:6mm 0 0}.lesson-reader h2{font-size:20pt;line-height:1.5;margin:0 0 6mm}.lesson-reader h3{font-size:12pt}.lesson-reader .p{font-size:10pt;line-height:1.85;margin:4mm 0}.lesson-reader .note{font-size:8pt}.lesson-reader .stat-pair strong{font-size:39pt}.lesson-reader .stat-pair small{font-size:10pt}.lesson-reader .stat-pair strong span{font-size:11pt}.lesson-chart{break-inside:avoid;margin:5mm 0;padding:3mm 0}.lesson-chart figcaption,.time-picture figcaption{font-size:9pt;margin-bottom:3mm}.chart-row{grid-template-columns:35mm 1fr 22mm;gap:3mm;margin:3mm 0}.chart-row>span{font-size:9pt}.chart-row b{font-size:11pt}.chart-track{height:5mm}.data-detail{display:none}.time-picture{break-inside:avoid;margin:6mm 0}.time-strip{min-height:24mm}.time-strip>div{font-size:10pt}.time-strip strong{font-size:18pt}.time-total{font-size:10pt;margin:2mm 0 4mm}.time-total b{font-size:15pt}.time-compare b{font-size:25pt}.time-compare span,.time-compare em{font-size:9pt}.time-compare small{font-size:9pt}.time-checklist{break-inside:avoid}.method-lesson{grid-template-columns:10mm 1fr;gap:4mm;margin:5mm 0;padding-top:4mm;break-inside:avoid}.method-number{width:8mm;height:8mm;font-size:14pt}.method-lesson h3{font-size:12pt;margin-bottom:3mm}.method-lesson .p{font-size:9pt}.before-after{break-inside:avoid;margin:4mm 0}.before-after b{font-size:20pt}.before-after p{font-size:9pt}.before-after b span{font-size:8pt}.standout-stat{margin:5mm 0;padding:4mm 0 0}.standout-stat strong{font-size:44pt}.standout-stat p{font-size:10pt}.workload-visual{padding:5mm 0;margin:5mm 0;break-inside:avoid}.workload-visual strong{font-size:45pt}.workload-visual>span,.workload-visual p{font-size:10pt}.workload-visual small{font-size:13pt}.mail-example{break-inside:avoid;margin:5mm 0}.mail-window{border:1pt solid #8baba6;border-radius:0}.mail-toolbar{padding:3mm 4mm;font-size:9pt}.mail-example-tag{font-size:8pt}.mail-address,.mail-subject{padding:3mm 4mm;font-size:9pt}.mail-body{padding:4mm 5mm;font-size:9pt;line-height:1.8}.mail-body p{margin:0 0 3mm}.mail-bottom{display:none}.mail-scene{font-size:10pt;margin:0 0 3mm}.mail-point{font-size:9pt;margin:3mm 0}.email-tabs,#email-copy-status{display:none}.email-panels [hidden]{display:block}.template-original{display:none}.lesson-reader .cover-map-link{position:relative;width:100%;height:75mm}.lesson-reader .cover-map-link .cover-map{height:100%;position:absolute}.map-entry-label{display:none}.lesson-reader .worksheet label{font-size:10pt}.lesson-reader .worksheet textarea{font-size:10pt}.lesson-reader .time-checklist{padding:4mm}.lesson-reader .calculator{display:none!important}}
.lesson-reader .callout{color:#18283d}.mail-preview-live{display:none}.mail-window{font-family:'Hiragino Kaku Gothic ProN','Yu Gothic',Meiryo,sans-serif}.mail-preview-live .mail-scene,.mail-preview-live .mail-point{display:none}
@media(max-width:800px){.email-landing figure>img{display:none}.mail-preview-live{display:block}.email-landing .mail-body{font-size:14px}.email-landing .mail-example{margin:0}}
@media print{.template-original{display:block;break-before:page;border:0}.template-original>summary{font-size:12pt;color:#18283d;margin-bottom:5mm}.template-original .template{font-size:10pt;line-height:1.8}.template-original .p{font-size:10pt}}

/* Chapter menu: broad reading rows instead of five narrow columns. */
.chest-navigation{padding:24px 28px 12px}
.chest-navigation .game-instruction{text-align:left;font-family:var(--body);font-size:14px;line-height:1.75}
.chest-navigation .chapter-links{grid-template-columns:minmax(0,1fr);gap:0;margin:16px 0 0}
.chest-navigation .chapter-link{display:grid;grid-template-columns:43px minmax(0,1fr) auto;gap:20px;align-items:center;text-align:left;min-height:90px;padding:17px 0;border:0;border-bottom:1px dashed #a6b9b5;background:transparent;transform:none}
.chest-navigation .chapter-link:last-child{grid-column:auto;border-bottom:0}
.chest-navigation .chapter-link:hover{background:#f8edc6;transform:none}
.chest-navigation .chapter-link-copy{min-width:0}
.chest-navigation .chapter-link b{display:block;font-size:19px;line-height:1.5;letter-spacing:0}
.chest-navigation .chapter-link small{display:block;font-size:13px;line-height:1.7;margin-top:4px}
.chest-navigation .chest-link-action{font-size:12px;line-height:1.6;white-space:nowrap;margin:0;justify-self:end;align-self:center}
@media(max-width:1050px) and (min-width:800px){.contents-grid{grid-template-columns:.75fr 1.25fr;gap:32px}.chest-navigation{padding:22px 22px 10px}.chest-navigation .chapter-link{grid-template-columns:43px minmax(0,1fr);column-gap:18px;row-gap:5px}.chest-navigation .chest-link-action{grid-column:2;justify-self:start}.chest-navigation .chapter-link .pixel-chest{grid-row:1/3}.chest-navigation .chapter-link b{font-size:18px}}
@media(max-width:799px){.chest-navigation{padding:20px 20px 8px}.chest-navigation .game-instruction{font-size:13px}.chest-navigation .chapter-link{grid-template-columns:37px minmax(0,1fr);column-gap:18px;row-gap:6px;padding:18px 0}.chest-navigation .chapter-link .pixel-chest{grid-row:1/3}.chest-navigation .chapter-link b{font-size:18px;line-height:1.5}.chest-navigation .chapter-link small{font-size:13px}.chest-navigation .chest-link-action{grid-column:2;justify-self:start;font-size:12px}}
@media(prefers-reduced-motion:reduce){.chest-navigation .chapter-link{transition:none}}

/* Header brand: reuse the official company wordmark. */
.topbar .brand{display:flex;align-items:center;min-width:0;flex-shrink:1}.topbar .brand-logo{display:block;width:240px;max-width:100%;height:auto}
@media(max-width:799px){.topbar .brand-logo{width:190px}}
@media(max-width:380px){.topbar .brand-logo{width:164px}}

/* Keep the guide separate from the introductory landing page. */
.guide-entry-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center}.guide-entry .section-lead{margin-bottom:0}.guide-entry-links{min-width:0}.guide-entry-links>a{display:flex;align-items:center;justify-content:space-between;gap:18px;text-decoration:none}.guide-entry-primary{border:2px solid var(--navy);background:var(--cream);padding:24px 28px;box-shadow:5px 6px 0 var(--teal)}.guide-entry-primary small{display:block;font-size:13px;color:var(--teal);font-weight:700}.guide-entry-primary b{font-size:25px;line-height:1.6}.guide-entry-primary>span:last-child{font-size:30px;color:var(--teal)}.guide-entry-pdf{margin-top:24px;padding:12px 0;border-bottom:1px solid var(--teal);font-size:15px;font-weight:700;color:var(--teal)}.guide-entry-links>p{font-size:12px;margin:14px 0 0;color:var(--muted)}
@media(max-width:799px){.guide-entry-layout{grid-template-columns:1fr;gap:26px}.guide-entry-primary{padding:20px 22px}.guide-entry-primary b{font-size:23px}}