@font-face{font-family:Book;src:url('book.ttf')}*{box-sizing:border-box} :root{--ink:#3e3229;--muted:#827160;--red:#9f3e30;--paper:#faf4e7;--line:#cdbca3}body{margin:0;color:var(--ink);font-family:Book,'KaiTi',serif;background:#eee4d4}button,textarea{font:inherit}button{cursor:pointer;color:inherit}button:focus-visible,textarea:focus-visible{outline:3px solid #b86044;outline-offset:4px}button:disabled{opacity:.35;cursor:default}button{transition:background .2s,transform .2s}button:hover:not(:disabled){transform:translateY(-2px)}.scene{position:fixed;inset:0;background-size:cover;background-position:center;z-index:-2}.veil{position:fixed;inset:0;background:rgba(249,243,231,.81);z-index:-1}.editor{min-height:100vh;display:flex;flex-direction:column;padding:24px 4.5vw 0}.masthead{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #bbaa9080;padding-bottom:16px;gap:20px}.brand{display:flex;align-items:center;gap:15px}.seal{width:43px;height:48px;background:var(--red);color:#fff5e2;display:grid;place-content:center;font-size:19px;line-height:1.1;border:3px double #f4dcc2;writing-mode:vertical-rl}.brand h1{font-size:25px;margin:0;font-weight:normal;letter-spacing:3px}.eyebrow{font-family:Arial,sans-serif;letter-spacing:3px;font-size:10px;color:var(--muted);margin-top:7px}.save-state{font-size:14px;color:var(--muted)}.steps{display:flex;gap:0;justify-content:center;margin:23px auto;width:min(960px,100%)}.step{border:0;background:none;flex:1;position:relative;font-size:17px;white-space:nowrap;padding:9px 5px;color:var(--muted)}.step:after{content:'';position:absolute;height:1px;background:#cdbca3;right:-10%;width:20%;top:50%}.step:last-child:after{display:none}.step i{font-style:normal;font-family:Georgia,serif;font-size:13px;margin-right:8px;border:1px solid #b7a58c;border-radius:50%;padding:6px}.step.active{color:var(--red)}.step.active i{color:white;background:var(--red);border-color:var(--red)}.step.done i{border-color:var(--red);color:var(--red)}main{flex:1;width:100%;max-width:1500px;margin:0 auto;padding-bottom:24px}.section-head{text-align:center;margin:5px 0 22px}.section-head .chapter{font-size:12px;letter-spacing:4px;color:var(--red)}h2{font-size:34px;letter-spacing:5px;margin:10px 0;font-weight:normal}.section-head p{font-size:17px;color:var(--muted);margin:8px 0}.prompt{padding:15px 22px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fffaf080;text-align:center;font-size:22px;margin:0 0 22px}.prompt strong{color:var(--red);font-weight:normal;border-bottom:1px solid var(--red);padding:0 10px}.covers{display:grid;grid-template-columns:repeat(5,1fr);gap:19px}.cover-card{position:relative;background:#fffaf0c9;padding:13px;border:1px solid #ccbaa0;text-align:left;box-shadow:0 5px 15px #4a30100a}.cover-card.selected,.material.selected{border:2px solid var(--red);box-shadow:0 6px 20px #733b1810}.cover-card img{width:100%;height:clamp(180px,24vh,300px);object-fit:contain;background:#efe7d7}.cover-card .num{color:var(--red);font-family:Georgia,serif;font-size:14px;display:block;margin:16px 0 8px}.cover-card h3{font-size:19px;font-weight:normal;margin:0 0 10px;line-height:1.5}.selection{position:absolute;top:20px;right:18px;background:var(--red);color:#fff7e8;padding:5px 9px;font-size:14px}.cover-card:not(.selected) .selection,.material:not(.selected) .selection{display:none}.helper{text-align:center;color:var(--muted);font-size:14px;margin:20px 0}.footer{position:sticky;bottom:0;display:flex;justify-content:space-between;align-items:center;gap:15px;background:#f5eddeed;border-top:1px solid #cdbc9e;padding:15px 0;z-index:4;backdrop-filter:blur(10px)}.btn{padding:11px 28px;background:transparent;border:1px solid #a9977b;font-size:18px}.btn.primary{background:var(--red);border-color:var(--red);color:#fff9ed}.footer .page-hint{color:var(--muted);font-size:15px}.material-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.material{position:relative;text-align:left;background:#fffaf0d9;border:1px solid var(--line);padding:22px 24px;align-self:stretch}.material .selection{top:12px;right:12px}.material h3{font-size:23px;font-weight:normal;margin:0 0 10px}.material h4{font-size:17px;color:var(--red);font-weight:normal;margin:0 0 14px}.material p{font-size:17px;line-height:1.75;margin:10px 0}.reason{display:block;width:100%;margin-top:12px;background:transparent;border:0;resize:vertical;min-height:64px;line-height:32px;background-image:repeating-linear-gradient(transparent 0,transparent 30px,#bda98b 31px,transparent 32px);color:var(--ink);font-size:20px;padding:0 5px}.prompt.reason-prompt{text-align:left}.style-grid{display:grid;grid-template-columns:1fr 1fr;gap:35px;max-width:1150px;margin:auto}.style-card{background:#fffbf0bd;border:1px solid var(--line);padding:35px 40px;position:relative;overflow:hidden}.style-card .big{font-size:76px;letter-spacing:15px;margin:0 0 16px}.style-card:nth-child(2) .big{color:var(--red)}.style-card .sub{font-size:20px;letter-spacing:3px;border-bottom:1px solid var(--line);padding-bottom:20px}.style-card p{font-size:22px;line-height:1.8}.diagram{display:flex;align-items:center;gap:13px;justify-content:center;margin:32px 0 15px}.diagram span{border:1px solid #bcaa91;padding:13px 15px;background:#faf3e6;font-size:19px}.diagram b{color:var(--red);font-size:25px;font-weight:normal}.style-note{text-align:center;margin-top:26px;color:var(--muted);font-size:20px}.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin:32px auto 35px;max-width:1150px}.event{position:relative;border-top:1px solid #a48c68;padding-top:24px}.event:before{content:'';position:absolute;width:10px;height:10px;top:-6px;left:0;background:var(--red);border-radius:50%;box-shadow:0 0 0 5px #eadcc6}.event .date{font:24px Georgia,serif;color:var(--red)}.event p{font-size:19px;line-height:1.6}.letters{display:grid;grid-template-columns:1fr 60px 1.5fr;align-items:center;gap:20px;max-width:1150px;margin:0 auto 20px}.letter{background:#fff9e9;border:1px solid #c7b391;padding:24px 30px;box-shadow:0 7px 15px #52361312;transform:rotate(-1deg)}.letter.reply{transform:rotate(1deg);margin-top:16px}.letter h3{font-size:20px;color:var(--red);font-weight:normal;margin:0 0 14px}.letter p{font-size:20px;line-height:1.8;margin:0}.mail-arrow{text-align:center;font-size:30px;color:var(--red)}.mail-arrow small{font-size:13px;display:block}.reflection{max-width:900px;margin:auto;padding:70px 65px 85px;background-size:100% 100%;background-color:#f5eddb;box-shadow:0 8px 30px #48301816}.reflection textarea{width:100%;height:260px;border:0;background:repeating-linear-gradient(transparent 0,transparent 38px,#a38c6975 39px,transparent 40px);line-height:40px;font-size:23px;padding:0 8px;resize:vertical;color:var(--ink)}.count{text-align:right;font-size:14px;color:var(--muted);margin-top:8px}.modal-backdrop{position:fixed;inset:0;background:#251b1280;z-index:20;display:grid;place-items:center;padding:25px}.modal{background:#faf3e5;border:1px solid #a78d69;max-width:540px;width:100%;padding:35px;box-shadow:0 20px 70px #0004}.modal h3{font-size:26px;font-weight:normal;margin:0 0 15px}.modal p{font-size:18px;line-height:1.7}.missing{display:block;width:100%;text-align:left;padding:12px;border:0;border-bottom:1px solid var(--line);background:transparent;font-size:18px;color:var(--red)}.modal-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:25px}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:#46392eee;color:#fff7e8;padding:13px 25px;z-index:40;display:none;font-size:18px}.printing{min-height:100vh;display:flex;align-items:center;justify-content:center;flex-direction:column;background:radial-gradient(#fff9ec,#e6d7bf)}.printer{width:180px;height:100px;background:#766958;border-radius:13px;position:relative;margin:80px 0 65px;border:6px solid #594c3d;box-shadow:0 20px 30px #513a1922}.printer:before{content:'';position:absolute;left:18px;right:18px;top:30px;height:13px;background:#29221c;border-radius:5px}.printer:after{content:'';position:absolute;right:12px;top:12px;width:8px;height:8px;border-radius:50%;background:#e5bb6b;animation:blink .6s infinite}.sheet{position:absolute;left:28px;top:40px;width:110px;height:120px;background:repeating-linear-gradient(#fff7e7 0,#fff7e7 17px,#d4c0a1 18px,#fff7e7 19px);border:7px solid #fff7e7;transform-origin:top;animation:print 2.7s ease-in-out forwards}.printing h2{font-size:30px}.printing p{color:var(--muted);font-size:18px}@keyframes print{from{transform:scaleY(0)}to{transform:scaleY(1)}}@keyframes blink{50%{opacity:.3}}.reader{min-height:100vh;background:radial-gradient(ellipse at center,#e4d6be,#b9a68c);padding:20px 30px 24px;display:flex;flex-direction:column;align-items:center}.reader-top{width:100%;display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.reader-title{font-size:20px;letter-spacing:4px}.reader-top button{font-size:15px;border:0;background:none;border-bottom:1px solid #8a765b;padding:6px}.book-wrap{position:relative;filter:drop-shadow(8px 15px 14px #34261450);line-height:0}.book-wrap canvas{display:block;width:auto;max-width:calc(100vw - 70px);height:min(74vh,900px);object-fit:contain}.book-wrap.closed{cursor:pointer;transform:perspective(1600px) rotateY(-5deg);transition:transform .4s}.book-wrap.closed:hover{transform:perspective(1600px) rotateY(0)}.open-label{position:absolute;bottom:11%;left:50%;transform:translateX(-50%);background:#9f3e30;color:#fff4df;line-height:1.4;padding:10px 20px;font-size:16px;white-space:nowrap;box-shadow:0 3px 12px #0002}.reader-nav{display:flex;align-items:center;gap:25px;margin-top:20px;min-height:45px}.reader-nav .btn{font-size:16px;padding:9px 22px}.reader-actions{display:flex;gap:15px;margin-top:14px}.reader-actions .btn{font-size:17px}.reader .helper{margin:12px 0 0}.fade{animation:fade .35s ease}@keyframes fade{from{opacity:.3;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@media(min-height:900px){.section-head{margin:15px 0 30px}.covers{margin-top:35px}.cover-card img{height:30vh}.style-card{padding:50px}.reflection textarea{height:340px}}@media(max-width:900px){.editor{padding:15px 20px 0}.covers{grid-template-columns:repeat(3,1fr)}.material-grid{grid-template-columns:1fr}.style-grid{gap:15px}.style-card{padding:20px}.style-card .big{font-size:50px}.diagram{flex-wrap:wrap}.letters{gap:10px}.step{font-size:14px}.step i{display:none}.step:after{display:none}.save-state{display:none}}@media(max-width:600px){.covers{grid-template-columns:repeat(2,1fr)}.style-grid{grid-template-columns:1fr}.timeline{gap:15px}.event .date{font-size:18px}.event p{font-size:16px}.letters{grid-template-columns:1fr}.mail-arrow{transform:rotate(90deg);margin:8px}.mail-arrow small{display:none}.reflection{padding:55px 25px}.footer .page-hint{display:none}.brand h1{font-size:20px}h2{font-size:28px}.prompt{font-size:18px}.btn{padding:10px 16px}.reader{padding:15px}.reader-title{font-size:16px}.reader-nav{gap:15px}.book-wrap canvas{height:auto;width:calc(100vw - 40px)}.reader-actions{flex-wrap:wrap;justify-content:center}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}
/* Keep navigation outside the scrollable reading area at classroom screen sizes. */
.editor{height:100dvh;min-height:0;overflow:hidden}.masthead,.steps,.footer{flex-shrink:0}.editor main{min-height:0;overflow:auto;padding:0 4px 25px;scrollbar-width:thin;scrollbar-color:#b5a184 transparent}.footer{position:relative;bottom:auto}.material{display:flex;flex-direction:column;justify-content:flex-start}.step.active.done i{color:#fff}.sr-label{display:block;font-size:18px;color:#806b53;margin-bottom:10px}.fade{animation:fade .25s ease}@media(max-height:800px) and (min-width:901px){.editor{padding-top:16px}.masthead{padding-bottom:10px}.steps{margin:13px auto}.section-head{margin:4px 0 18px}h2{font-size:30px}.section-head p{font-size:16px}.timeline{margin:20px auto 22px}.event{padding-top:18px}.event h3{margin:10px 0}.event p{font-size:17px;margin:8px 0}.letter{padding:18px 24px}.letter p{font-size:18px;line-height:1.6}.letters{margin-bottom:10px}.style-card{padding:25px 35px}.style-card .big{font-size:60px}.style-card p{font-size:20px}.diagram{margin:20px 0 10px}.style-note{margin:18px 0}.reflection{padding:60px 65px 65px}.reflection textarea{height:200px}.cover-card img{height:22vh;min-height:140px}.cover-card .num{margin:12px 0 6px}.cover-card h3{font-size:18px}.helper{margin:14px 0}}

/* Prominent dates and event names for classroom projection. */
.event .date{font-size:36px}.event h3{font-size:29px;font-weight:normal;margin:18px 0 12px;line-height:1.4}.timeline{margin-bottom:38px}@media(max-width:900px){.event .date{font-size:27px}.event h3{font-size:25px}}@media(max-width:600px){.event .date{font-size:20px}.event h3{font-size:21px}}
/* Full-height book preview with controls beside the page. */
.reader{height:100dvh;min-height:0;padding:12px 24px;overflow:hidden;position:relative;justify-content:center}
.reader-top{position:absolute;inset:20px 25px auto;width:auto;margin:0;z-index:3;pointer-events:none}
.reader-top>*{pointer-events:auto}
.reader-top #edit-again{background:#e9ddc9d9}
.book-wrap{flex-shrink:0}
.book-wrap canvas{height:calc(100dvh - 24px);width:auto;max-width:calc(100vw - 360px);object-fit:contain}
.reader-nav{position:absolute;inset:0;margin:0;pointer-events:none;display:block}
.reader-nav .btn{position:absolute;top:50%;transform:translateY(-50%);pointer-events:auto;padding:16px 23px;font-size:19px;background:#f7eddbde;box-shadow:0 4px 15px #35231116}
.reader-nav .btn:hover:not(:disabled){transform:translateY(-50%);background:#fff5e4}
.reader-nav .btn.primary{background:var(--red)}
.reader-nav #book-prev{left:max(24px,calc(50% - (100dvh - 24px) * .3535 - 165px))}
.reader-nav #book-next{right:max(24px,calc(50% - (100dvh - 24px) * .3535 - 165px))}
.reader-nav>span{position:absolute;bottom:26px;left:32px;color:#5f4b35;font-size:18px}
.reader>.helper{position:absolute;bottom:24px;right:26px;max-width:150px;text-align:right;line-height:1.7;margin:0}
.reader-actions{position:absolute;right:24px;bottom:24px;display:flex;flex-direction:column;gap:12px;margin:0;max-width:180px}
.reader-actions .btn{padding:12px 16px;font-size:17px;line-height:1.5;background:#f5ead7e8}
.reader-actions .btn.primary{background:var(--red)}
@media(max-width:900px){.reader-top{inset:12px 14px auto}.reader-title{font-size:16px;letter-spacing:1px}.book-wrap canvas{max-width:calc(100vw - 170px)}.reader-nav .btn{padding:12px 9px;font-size:15px}.reader-nav #book-prev{left:8px}.reader-nav #book-next{right:8px}.reader-actions{right:8px;bottom:12px;max-width:140px}.reader-actions .btn{font-size:14px;padding:8px}.reader>.helper{display:none}.reader-nav>span{left:14px;bottom:18px}}
@media(max-width:600px){.reader{padding:50px 0 75px}.book-wrap canvas{height:auto;width:calc(100vw - 110px);max-width:none;max-height:calc(100dvh - 135px)}.reader-nav .btn{font-size:0;padding:12px 8px}.reader-nav #book-prev:after{content:'←';font-size:24px}.reader-nav #book-next:after{content:'→';font-size:24px}.reader-actions{max-width:none;left:65px;right:8px;bottom:12px;flex-direction:row;justify-content:flex-end;gap:8px}.reader-actions .btn{font-size:12px}.reader-title{font-size:14px}.reader-top #edit-again{font-size:13px}}

/* Keep the opening control clear of the cover, with deliberate footer line breaks. */
.reader-nav #book-next{right:auto;left:calc(50% + (100dvh - 24px) * .3535 + 42px);white-space:nowrap}
.reader>.helper{max-width:none;white-space:nowrap}
.reader-actions #export{white-space:nowrap;min-width:170px;line-height:1.6}
@media(max-width:900px){.reader-nav #book-next{left:auto;right:8px}.reader-actions #export{min-width:130px}}
@media(max-width:600px){.reader-actions #export{min-width:105px}}

/* The page slides through a clipped output slot at its full physical size. */
.printing .printer{width:220px;height:118px;margin:65px 0 160px;overflow:visible;isolation:isolate}
.printing .printer:before{left:19px;right:19px;top:43px;height:14px;z-index:3;background:#28211b;box-shadow:inset 0 3px 4px #0009}
.paper-output{position:absolute;left:26px;top:50px;width:156px;height:195px;overflow:hidden;z-index:4;pointer-events:none}
.printing .sheet{position:absolute;left:7px;top:0;width:142px;height:180px;border:0;border-radius:0 0 2px 2px;background:#fff8e9;box-shadow:0 5px 8px #38291330;padding:20px 15px;transform:translateY(-100%);animation:paper-feed 2.7s cubic-bezier(.22,.6,.3,1) forwards;transform-origin:initial}
.sheet-title{display:block;font-size:17px;color:#584330;text-align:center;white-space:nowrap}
.sheet-rule{display:block;height:2px;background:#a6533c;margin:10px 0 13px}
.sheet-copy{display:block;height:85px;background:repeating-linear-gradient(to bottom,#ab9a80 0,#ab9a80 1px,transparent 1px,transparent 13px);opacity:.65}
@keyframes paper-feed{0%,10%{transform:translateY(-100%)}28%{transform:translateY(-78%)}42%{transform:translateY(-64%)}57%{transform:translateY(-46%)}73%{transform:translateY(-30%)}88%,100%{transform:translateY(-5%)}}
@media(prefers-reduced-motion:reduce){.printing .sheet{animation:none!important;transform:translateY(-5%)}}