:root{color-scheme:light;--ink:#142c39;--muted:#637074;--line:#dbded7;--panel:#fffefa;--page:#f7f5ee;--accent:#204b55;--accent-strong:#123641;--brass:#a1854c;--sea:#e3eeea;--deck:#eeede6;--shadow:0 24px 70px #162c392b;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:22px}body{margin:0;color:var(--ink);background:var(--page)}button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:inherit}button:disabled{cursor:not-allowed;opacity:.45}h1,h2,h3,p{margin:0}button,input,textarea,select{accent-color:var(--accent)}.skip-link{position:absolute;top:-100px;left:16px;z-index:10;padding:12px;background:var(--panel)}.skip-link:focus{top:12px}.site-header{display:flex;align-items:center;justify-content:space-between;gap:18px;margin:0 auto;padding:24px clamp(20px,4vw,64px);border-bottom:1px solid var(--line)}.wordmark{font:29px Georgia,serif;letter-spacing:-1px;text-decoration:none}.wordmark-dot{color:var(--brass)}.header-link{font-size:12px;text-decoration:none;letter-spacing:.03em}.header-link span{padding-left:16px}.product-header-nav{display:flex;align-items:center;gap:clamp(14px,3vw,36px)}.site-header a:focus-visible,.site-footer a:focus-visible{outline:3px solid #b9823d;outline-offset:4px}.intro{max-width:1680px;margin:auto;padding:38px clamp(20px,4vw,64px) 32px;display:flex;align-items:end;justify-content:space-between;gap:30px}.eyebrow{font-size:10px;letter-spacing:.19em;text-transform:uppercase;font-weight:600;color:var(--muted);margin-bottom:10px}.intro .eyebrow{color:#826c3f}.intro h1{font:400 clamp(32px,3.7vw,58px)/1.12 Georgia,"Times New Roman",serif;letter-spacing:-1.8px}.intro>p{font-size:13px;line-height:1.8;color:var(--muted);padding-bottom:3px}.app-shell{max-width:1680px;margin:0 auto 28px;display:grid;grid-template-columns:minmax(0,1fr) 370px;grid-template-areas:"preview config";align-items:start;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.config-panel{grid-area:config;background:var(--panel);border-left:1px solid var(--line);padding:28px}.config-heading h2{font:32px/1.1 Georgia,serif;letter-spacing:-.8px}.config-heading{margin-bottom:23px}.config-tabs{display:grid;grid-template-columns:1fr 1fr;gap:20px;border-bottom:1px solid var(--line)}.config-tabs button{padding:0 0 13px;border:0;border-bottom:2px solid transparent;background:none;text-align:left;color:var(--muted);font-size:11px}.config-tabs span{font-size:13px;padding-left:8px}.config-tabs [aria-selected=true]{border-color:var(--accent);color:var(--accent)}.control-group{padding:21px 0;border-bottom:1px solid var(--line)}.group-heading{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:12px}.group-heading h2{font-size:13px;font-weight:600}.group-heading>span{font-size:11px;color:var(--muted);text-align:right}.settings-note{font-size:12px;color:var(--muted);line-height:1.6;margin-top:18px}#configuration-notice{font-size:12px;line-height:1.6;color:#805724;margin-top:14px}#configuration-notice:empty{display:none}.option-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.paper-options,.binding-options{display:grid;gap:7px}.format-card,.paper-card,.binding-card,.header-chip,.column-chip,.remarks-option,.remarks-height-option{border:1px solid var(--line);background:transparent;border-radius:4px;color:var(--ink);transition:background .15s,border-color .15s}.format-card:hover,.paper-card:hover,.binding-card:hover,.header-chip:hover,.column-chip:not(:disabled):hover{border-color:#7d979b;background:#f1f5f1}.format-card[aria-pressed=true],.paper-card[aria-pressed=true],.binding-card[aria-pressed=true],.header-chip[aria-pressed=true],.column-chip[aria-pressed=true],.remarks-option[aria-pressed=true],.remarks-height-option[aria-pressed=true]{border-color:var(--accent);background:#edf2ee;box-shadow:inset 0 0 0 .5px var(--accent)}.format-card{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:13px;padding:17px 6px;min-height:126px}.format-card strong,.paper-card strong,.binding-card strong{font-size:12px;font-weight:500;display:block}.format-card small,.paper-card small,.binding-card small{display:block;font-size:10px;color:var(--muted);margin-top:4px;line-height:1.4}.mini-page{display:block;width:var(--mini-width);height:var(--mini-height);border:1px solid var(--accent);background:#fffefa}.format-card:has([style*="42px; --mini-height:30px"]){padding-top:23px;padding-bottom:23px}.paper-card,.binding-card{display:grid;grid-template-columns:32px 1fr;gap:12px;text-align:left;align-items:center;padding:10px;min-height:58px}.paper-swatch{width:30px;height:30px;border-radius:50%;border:1px solid #172c391a;box-shadow:inset 0 2px 3px #fff8}.standard .paper-swatch{background:#fff}.moleskine .paper-swatch{background:#ece2cb}.waterproof .paper-swatch{background:linear-gradient(135deg,#fff,#dae8e9)}.binding-swatch{width:27px;height:34px;border-radius:1px 3px 3px 1px;box-shadow:inset 3px 0 3px #0004,1px 2px 3px #0002}.soft .binding-swatch{background:#245669}.hard .binding-swatch{background:#173444}.leather .binding-swatch{background:repeating-linear-gradient(120deg,#fff1 0 1px,transparent 1px 4px),#49382e}.header-options,.column-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px}.header-chip,.column-chip{display:flex;align-items:center;gap:7px;text-align:left;padding:10px 8px;min-height:42px;font-size:11px;overflow-wrap:anywhere}.chip-check{flex:0 0 12px;height:12px;border:1px solid #9aa8a6;border-radius:2px;background:var(--panel)}[aria-pressed=true]>.chip-check{background:var(--accent);border-color:var(--accent);box-shadow:inset 0 0 0 2px #edf2ee}.column-order-panel,.remarks-layout-panel{margin-top:20px}.column-order-heading{margin-bottom:10px}.column-order-heading h3{font-size:11px;font-weight:500;color:var(--muted)}.column-order-list{display:grid;gap:5px}.column-order-item{display:grid;grid-template-columns:10px 16px minmax(0,1fr) auto;gap:7px;align-items:center;min-height:40px;border-bottom:1px solid var(--line);padding:4px 0}.column-order-item strong{font-size:11px;font-weight:400;overflow-wrap:anywhere}.order-number{color:var(--muted);font-size:10px}.drag-handle{height:14px;background:radial-gradient(circle,#9aa8a6 1px,transparent 1.5px) 0 0/4px 4px}.order-actions{display:flex;gap:3px}.order-actions button{font-size:10px;color:var(--accent);border:1px solid var(--line);background:var(--panel);padding:7px 5px;border-radius:3px;min-height:32px}.is-dragging{opacity:.5}.empty-order{font-size:12px;color:var(--muted)}.remarks-options,.remarks-height-options{display:flex;gap:7px}.remarks-option,.remarks-height-option{min-height:38px;flex:1;font-size:11px;padding:6px}.remarks-height-group{margin-top:12px}.remarks-height-group>span{display:block;font-size:11px;color:var(--muted);margin-bottom:7px}.custom-column{margin-top:20px}.custom-column label{display:block;font-size:11px;margin-bottom:8px}.input-row{display:flex;gap:6px}.input-row input{min-width:0;flex:1;padding:10px;font-size:12px;border:1px solid var(--line);border-radius:3px}.input-row button{padding:10px 13px;border:0;border-radius:3px;background:var(--accent);color:#fff;font-size:12px}.preview-panel{grid-area:preview;position:sticky;top:0;min-width:0;padding:26px clamp(20px,3vw,48px) 30px;background:radial-gradient(ellipse at 50% 45%,#fffefa,#eeeee7 85%)}.preview-toolbar{display:flex;justify-content:space-between;gap:20px;align-items:start}.preview-toolbar h2{font:21px Georgia,serif}.preview-meta{max-width:210px;font-size:10px;color:var(--muted);text-align:right;line-height:1.7}.book-tools{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:24px 0 0}.book-view-switch{display:flex;gap:4px;border-bottom:1px solid #d5dbd5}.book-tools button{border:0;background:none;padding:10px 13px;color:var(--muted);font-size:11px;min-height:40px}.book-view-switch button{border-bottom:2px solid transparent}.book-tools button[aria-pressed=true]{color:var(--accent);border-bottom-color:var(--accent)}.book-viewport{height:clamp(320px,48vw,530px);display:flex;align-items:center;justify-content:center;overflow:auto;scrollbar-width:thin}.book-scene{width:100%;display:flex;align-items:center;justify-content:center;filter:drop-shadow(0 24px 20px #20323b2b)}.live-book{--paper:#fffefa;--cover:#173444;position:relative;outline-offset:8px;touch-action:pan-y}.live-book[data-paper=moleskine]{--paper:#f3ead6 }.live-book[data-paper=waterproof]{--paper:#f5faf9 }.live-book[data-binding=soft]{--cover:#245669 }.live-book[data-binding=leather]{--cover:#49382e }.flip-page{background:var(--paper);overflow:hidden;border:1px solid #d0cebf}.flip-page svg{display:block;width:100%;height:100%}.page-left{background-image:linear-gradient(90deg,transparent 85%,#544b3220)}.page-right{background-image:linear-gradient(90deg,#544b3220,transparent 15%)}.book-cover{background:var(--cover);color:#d4c294;border:1px solid #ffffff28;box-shadow:inset 6px 0 8px #0004,inset -2px 0 2px #fff2}.live-book[data-binding=leather] .book-cover{background-image:repeating-linear-gradient(125deg,#ffffff07 0 1px,transparent 1px 4px)}.cover-face{height:100%;margin-left:5%;border-left:3px double #d4c29435;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;padding:10% 8%;gap:18px}.cover-edition{font-size:8px;letter-spacing:.2em}.cover-title{font:clamp(17px,2.8vw,32px)/1.3 Georgia,serif;letter-spacing:.13em}.cover-rule{width:35px;border-top:1px solid #c5ab72}.cover-subtitle{font:italic 13px Georgia,serif}.cover-format{font-size:8px;letter-spacing:.18em;margin-top:12px}.book-navigation{display:flex;justify-content:center;align-items:center;gap:22px;margin-top:12px}.book-navigation button{font-size:11px;color:var(--accent);border:1px solid #ccd4cc;background:#fffefa99;border-radius:4px;min-height:42px;padding:10px 16px}.book-navigation button:last-child{background:var(--accent);color:#fff;border-color:var(--accent)}#book-page-status{font-size:10px;color:var(--muted);min-width:95px;text-align:center}.book-help{font-size:10px;color:var(--muted);text-align:center;margin-top:17px;line-height:1.6}.flat-proof{display:grid;grid-template-columns:1fr 1fr;gap:14px;width:100%;padding:18px 8px}.proof-page{background:var(--paper,#fffefa);box-shadow:0 3px 14px #20323b18}.proof-page svg{width:100%;height:100%;display:block}.book-viewport.is-zoomed{justify-content:flex-start;align-items:flex-start}.book-viewport.is-zoomed .flat-proof{width:150%;min-width:1100px;flex-shrink:0}.book-viewport.is-zoomed .book-scene{min-width:140%;padding:20px}.site-footer{max-width:1680px;margin:auto;padding:0 clamp(20px,4vw,64px) 28px;display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:10px}.site-footer>a{font:italic 16px Georgia,serif;color:var(--ink)}.site-footer>span:first-of-type{font:italic 16px Georgia,serif;color:var(--ink)}.site-footer i{font-style:normal;padding:0 10px}@media(min-width:1400px){.app-shell{grid-template-columns:minmax(0,1fr) 400px}.config-panel{padding:32px}.book-viewport{height:560px}}@media(max-width:1000px){.app-shell{grid-template-columns:minmax(0,1fr) 330px}.config-panel{padding:22px}.intro>p{display:none}.preview-toolbar{display:block}.preview-meta{max-width:none;text-align:left;margin-top:8px}.preview-panel{padding:24px 18px}.book-navigation{gap:8px}}@media(max-width:760px){.app-shell{grid-template-columns:1fr;grid-template-areas:"preview" "config"}.preview-panel{position:relative;padding:22px 18px}.config-panel{border-left:0;border-top:1px solid var(--line);padding:25px}.book-viewport{height:400px}.intro{padding:26px 20px}.intro h1{font-size:36px}.wordmark{font-size:24px}.site-header{padding:20px}.product-header-nav .header-link:first-child{display:none}.preview-toolbar{display:flex}.preview-meta{max-width:150px;text-align:right}.site-footer{flex-direction:column}.paper-options,.binding-options{grid-template-columns:repeat(3,minmax(0,1fr))}.paper-card,.binding-card{display:flex;flex-direction:column;text-align:center;padding:12px 7px}.paper-card small,.binding-card small{font-size:10px}.config-heading h2{font-size:30px}.book-viewport.is-zoomed .book-scene{min-width:180%}.input-row input,.checkout-grid input,.checkout-grid textarea{font-size:16px}.order-actions button{min-height:44px;min-width:44px}}@media(max-width:420px){.preview-toolbar{display:block}.preview-meta{text-align:left;max-width:none}.book-viewport{height:340px}.book-navigation{gap:6px}.book-navigation button{padding:10px}.site-footer>span:last-child{line-height:1.9}.intro h1{font-size:32px;letter-spacing:-1px}.header-link{font-size:10px}.header-link span{padding-left:3px}.config-panel{padding:22px 18px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}[hidden]{display:none!important}.order-entry{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin:18px 0 10px}.order-entry p{color:var(--muted);font-size:.85rem}.primary-button,.secondary-button,.text-button{border:1px solid transparent;border-radius:8px;padding:11px 18px;font-weight:750}.primary-button{background:var(--accent);color:#fff}.primary-button:hover{background:var(--accent-strong)}.secondary-button{background:#fff;border-color:var(--line);color:var(--ink)}.text-button{background:transparent;color:var(--accent-strong);padding:8px}.primary-button:disabled,.secondary-button:disabled,.text-button:disabled{opacity:.5;cursor:not-allowed}button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #b9823d;outline-offset:3px}#order-dialog{width:min(660px,calc(100% - 24px));max-height:calc(100dvh - 32px);padding:28px;border:1px solid var(--line);border-radius:16px;color:var(--ink);box-shadow:var(--shadow);overscroll-behavior:contain}#order-dialog::backdrop{background:#11212b8c;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}body:has(#order-dialog[open]){overflow:hidden}.checkout-header{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}.checkout-header h2{margin-top:7px;font-size:1.6rem}.checkout-progress{margin:18px 0;color:var(--muted);font-size:.84rem}.order-summary{padding:18px;background:#f2f8f8;border:1px solid #d8e7e8;border-radius:10px}.order-summary dl{display:grid;grid-template-columns:125px minmax(0,1fr);gap:10px 16px;margin:0;font-size:.88rem;line-height:1.5}.order-summary dt{color:var(--muted)}.order-summary dd{margin:0;overflow-wrap:anywhere}#customer-fields{margin:24px 0 0;padding:0;border:0}#customer-fields legend{margin-bottom:16px;font-size:1.1rem;font-weight:750}.checkout-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.checkout-grid label{display:grid;gap:7px;font-size:.85rem;font-weight:650}.checkout-grid .full-width{grid-column:1 / -1}.checkout-grid input,.checkout-grid textarea{width:100%;min-width:0;padding:11px;border:1px solid var(--line);border-radius:7px;color:var(--ink);background:#fff;font:inherit;font-weight:400}.checkout-grid textarea{resize:vertical}.checkout-note{margin-top:20px;color:var(--muted);font-size:.86rem;line-height:1.6}.checkout-actions{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:12px;margin-top:24px}.delivery-summary{margin-top:24px}.delivery-summary h3{font-size:1rem;margin:0 0 12px}#delivery-summary{white-space:pre-line;line-height:1.65;overflow-wrap:anywhere}#order-status{margin-top:18px;font-size:.88rem;line-height:1.5}#order-status:empty{display:none}#order-confirmation{text-align:center;line-height:1.65}.order-received-mark{display:grid;place-items:center;width:58px;height:58px;margin:26px auto 12px;background:var(--sea);color:var(--accent-strong);border-radius:50%;font-size:1.8rem}#order-reference{margin:12px 0 22px;padding:14px;background:#f2f8f8;border-radius:8px;font-family:monospace;overflow-wrap:anywhere;-webkit-user-select:all;user-select:all}#order-confirmation .checkout-actions{justify-content:center}@media(max-width:560px){#order-dialog{padding:20px}.checkout-grid{grid-template-columns:1fr}.order-summary dl{grid-template-columns:1fr;gap:3px}.order-summary dd{margin-bottom:9px}.checkout-actions button{flex:1}}.order-entry{display:block;margin:24px 0 0}.order-entry .primary-button{width:100%;display:flex;justify-content:space-between;align-items:center;border-radius:4px;font-size:12px;padding:15px 18px;font-weight:500}.order-entry p{font-size:10px;text-align:center;line-height:1.6;margin-top:10px}.order-summary{background:#f3f3ea;border-color:var(--line)}.live-book{flex-shrink:0;transition:transform .7s ease}.flip-host{height:100%;width:100%}.flat-proof[hidden],.book-scene[hidden]{display:none!important}.book-viewport.is-zoomed .flat-proof{width:150%!important}.flat-proof{flex-shrink:0}.landing{display:grid;grid-template-columns:1fr 1fr;max-width:1680px;margin:auto;min-height:610px}.landing-copy{padding:64px clamp(28px,5vw,80px);align-self:center}.landing-copy .eyebrow{color:#897143;margin-bottom:26px}.landing h1{font:400 clamp(44px,5.6vw,84px)/1.04 Georgia,serif;letter-spacing:-2.8px}.landing h1 em{color:#88703f;font-weight:400}.landing-description{color:var(--muted);font-size:14px;line-height:1.9;max-width:350px;margin-top:28px}.landing-cta{display:inline-flex;align-items:center;justify-content:space-between;gap:55px;background:var(--accent-strong);color:#fffefa;padding:17px 23px;margin-top:30px;font-size:13px;text-decoration:none;border-radius:2px}.landing-cta:hover{background:#275561}.landing-caption{margin-top:18px;color:var(--muted);font-size:10px;max-width:300px;line-height:1.8}.landing-stage{position:relative;overflow:hidden;min-height:600px;background:radial-gradient(ellipse at 45% 45%,#284750,#101f29 80%);perspective:1200px}.landing-stage:before{content:"";position:absolute;width:650px;height:650px;border:1px solid #d4c29415;border-radius:50%;left:25%;top:12%;box-shadow:0 0 0 60px #d4c29406,0 0 0 120px #d4c29404}.stage-label,.stage-footnote{position:absolute;left:36px;right:36px;color:#c5c9bf;font-size:9px;letter-spacing:.2em;text-transform:uppercase;z-index:2}.stage-label{top:32px}.stage-footnote{bottom:28px;text-align:right}.hero-book{position:absolute;color:#dcc99e;background:repeating-linear-gradient(110deg,#ffffff05 0 1px,transparent 1px 3px),#193b4b;border:1px solid #b4bcad40;border-radius:2px 7px 7px 2px;box-shadow:inset 7px 0 10px #0005,inset -2px 0 2px #ffffff25,4px 4px #d4d0c2,7px 7px #17313b,20px 30px 34px #0005}.hero-portrait{width:42%;aspect-ratio:210/297;top:20%;left:12%;transform:rotate(-9deg) rotateY(-12deg);z-index:1}.hero-landscape{width:58%;aspect-ratio:297/210;left:35%;top:46%;transform:rotate(10deg) rotateY(-12deg);background-color:#254a56}.hero-book-face{height:100%;margin-left:5%;border-left:2px double #d8c39232;padding:12% 9%;display:flex;align-items:center;justify-content:center;text-align:center;flex-direction:column;gap:17px}.hero-edition{font-size:clamp(5px,.6vw,9px);letter-spacing:.2em}.hero-cover-title{font:400 clamp(16px,2vw,30px)/1.3 Georgia,serif;letter-spacing:.12em;overflow-wrap:anywhere;max-width:100%}.hero-rule{width:28px;border-top:1px solid #dbc99c}.hero-cover-subtitle{font:italic clamp(9px,1vw,13px)/1.6 Georgia,serif;overflow-wrap:anywhere;max-width:100%}.hero-format{font-size:7px;letter-spacing:.15em;margin-top:8px}.builder-heading{max-width:1680px;padding:46px 4vw 28px;margin:auto;border-top:1px solid var(--line)}.builder-heading h2{font:34px Georgia,serif;letter-spacing:-1px}.builder-heading>p:last-child{margin-top:8px;color:var(--muted);font-size:12px}.paper-included{font-size:11px;color:var(--muted);margin-top:14px}.cover-fields label{display:flex;flex-wrap:wrap;justify-content:space-between;gap:5px;font-size:12px;margin:15px 0 8px}.cover-fields label span{font-size:10px;color:var(--muted)}.cover-fields input,.cover-fields textarea{width:100%;padding:12px;border:1px solid var(--line);background:#fffefa;border-radius:3px;font-size:13px}.cover-fields textarea{resize:vertical;line-height:1.5}.cover-title,.cover-subtitle{max-width:100%;overflow-wrap:anywhere}.long-cover-title .cover-title{font-size:clamp(13px,1.7vw,22px);letter-spacing:.04em}.cover-face{gap:12px}.cover-subtitle{font-size:12px;line-height:1.4}.book-scene{filter:none}.live-book{transform:none;transition:none;user-select:none;-webkit-user-select:none}.flip-page{user-select:none;-webkit-user-select:none}.flip-page svg{pointer-events:none}@media(max-width:1000px){.landing,.landing-stage{min-height:520px}.landing-copy{padding:40px 28px}.landing h1{font-size:58px}.hero-portrait{top:26%}.hero-book-face{gap:12px}}@media(max-width:760px){.landing{grid-template-columns:1fr}.landing-copy{padding:40px 25px}.landing h1{font-size:clamp(46px,10vw,72px)}.landing-description{max-width:440px}.landing-stage{min-height:440px}.hero-portrait{width:32%;left:19%;top:13%;max-width:205px}.hero-landscape{width:47%;max-width:300px;left:43%;top:43%}.hero-cover-title{font-size:20px}.hero-cover-subtitle{font-size:11px}.hero-edition{font-size:7px}.binding-options{grid-template-columns:1fr 1fr}.cover-fields input,.cover-fields textarea{font-size:16px}}@media(max-width:440px){.landing-stage{min-height:350px}.hero-portrait{width:42%;left:9%;top:20%}.hero-landscape{width:54%;left:39%;top:45%}.hero-book-face{gap:9px;padding:12% 6%}.hero-cover-title{font-size:16px}.hero-cover-subtitle{font-size:9px}.hero-format{font-size:6px;margin-top:0}.hero-edition{font-size:6px}}.book-cover,.hero-book{container-type:size}.cover-face{gap:clamp(4px,2cqh,12px);padding:8% 6%}.cover-title{font-size:clamp(14px,8cqw,32px)}.long-cover-title .cover-title{font-size:clamp(11px,5cqw,20px)}.cover-subtitle{font-size:clamp(9px,3.5cqw,12px)}.hero-book-face{gap:clamp(4px,3cqh,17px)}.long-copy .hero-book-face{gap:5px;padding:6% 7%}.long-copy .hero-cover-title{font-size:clamp(10px,5cqw,20px);letter-spacing:.04em}.long-copy .hero-cover-subtitle{font-size:clamp(7px,3cqw,10px);line-height:1.3}.book-viewport{overflow:hidden;scrollbar-width:none}.book-viewport.is-zoomed{overflow:auto;scrollbar-width:thin}