/* Paper pages. Self-contained (no app tokens): the same rules are embedded when exporting PDF. */
.paper-typo { font-family: var(--pf, serif); font-size: var(--pfs, 12pt); line-height: var(--plh, 1.5); color: #000; }
.paper-measure { position: absolute; left: -99999px; top: 0; visibility: hidden; pointer-events: none; }
.paper-page { position: relative; box-sizing: border-box; background: #fff; color: #000; overflow: hidden; }
.pp-content { position: absolute; overflow: hidden; z-index: 1; }
.pp-header, .pp-footer { position: absolute; z-index: 2; font-size: 9pt; color: #333; display: flex; justify-content: space-between; gap: 8px; }
.pp-header { top: 5mm; } .pp-footer { bottom: 5mm; }
.pp-pn { margin-left: auto; } .pp-pn.al-left { margin-right: auto; margin-left: 0; } .pp-pn.al-center { margin: 0 auto; }
.pp-footer-text { }
.pp-wm { position: absolute; inset: 0; z-index: 0; display: flex; overflow: hidden; pointer-events: none; }
.wm-mark { white-space: nowrap; font-weight: 700; color: #000; display: block; }
.wm-grid { display: grid; margin: auto; align-content: center; justify-content: center; place-items: center; flex: none; }
.pp-wm img.wm-mark { height: auto; }

.pb { box-sizing: border-box; padding-bottom: var(--pps, 6px); overflow-wrap: anywhere; }
.pb p, .pb div, .pb ul, .pb ol { margin: 0; } .pb ul, .pb ol { padding-left: 1.4em; }
.pb img { max-width: 100%; height: auto; vertical-align: middle; }
.pb table { border-collapse: collapse; } .pb td, .pb th { border: 1px solid #000; padding: 2px 6px; }
.pb-p, .pb-custom, .pb-instruction { min-height: 1em; }
.pb-custom { border: 1px solid #000; padding: 4px 8px; margin-bottom: var(--pps, 6px); padding-bottom: 4px; }
.pb-instruction { font-style: italic; }
.pb-h { font-weight: 700; } .pb-h1 { font-size: 1.5em; } .pb-h2 { font-size: 1.25em; } .pb-h3 { font-size: 1.1em; }
.al-left { text-align: left; } .al-center { text-align: center; } .al-right { text-align: right; }
.pb-img.al-center { text-align: center; } .pb-img.al-right { text-align: right; } .pb-img.al-left { text-align: left; }
.pb-img { margin: 0; } .pb-img figcaption { font-size: 0.85em; margin-top: 2px; }
.img-missing-box { border: 1px dashed #888; padding: 12px; text-align: center; color: #666; font-size: 0.85em; }
.pb-hr { border: 0; border-top: 1px solid #000; margin: 4px 0; } .pb-hr.dashed { border-top-style: dashed; } .pb-hr.double { border-top: 3px double #000; }
.pb-section-row { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; border-bottom: 1px solid #000; padding-bottom: 2px; font-weight: 700; }
.pb-section-marks { font-weight: 400; white-space: nowrap; font-size: 0.9em; }
.pb-section-desc { font-size: 0.95em; margin-top: 2px; }
.pb-q { display: grid; grid-template-columns: max-content 1fr; column-gap: 0.5em; }
.pb-label { min-width: 1.6em; text-align: left; font-weight: 600; }
.pb-qbody { min-width: 0; }
.pb-marks { float: right; margin-left: 12px; white-space: nowrap; font-weight: 600; }
.pb-subs { margin-top: 2px; }
.pb-sub { display: grid; grid-template-columns: max-content 1fr; column-gap: 0.5em; padding-bottom: 2px; }
.pb-sub-label { min-width: 1.4em; }
.pb-opts { display: grid; gap: 1px 12px; margin-top: 2px; } .pb-opts.cols-1 { grid-template-columns: 1fr; } .pb-opts.cols-2 { grid-template-columns: 1fr 1fr; } .pb-opts.cols-3 { grid-template-columns: repeat(3, 1fr); } .pb-opts.cols-4 { grid-template-columns: repeat(4, 1fr); }
.pb-opt { display: grid; grid-template-columns: max-content 1fr; column-gap: 0.4em; }
.pb-opt.correct { font-weight: 700; text-decoration: underline; }
.pb-match { margin-top: 4px; width: 100%; } .pb-match td { border: 0; padding: 1px 6px; }
.pb-answer { margin-top: 2px; padding-left: 8px; border-left: 3px solid #555; font-size: 0.92em; }
.pb-tablewrap table { width: 100%; } .pb-table th { background: #eee; }
.pb-eq { font-size: 1.1em; padding-top: 2px; }
.pb-masthead { text-align: center; }
.mh-top { display: flex; align-items: center; justify-content: center; gap: 12px; }
.mh-logo { height: 18mm; width: auto; max-width: 30mm; object-fit: contain; }
.mh-inst { font-size: 1.4em; font-weight: 700; line-height: 1.2; } .mh-exam { font-weight: 700; margin-top: 2px; } .mh-small { font-size: 0.85em; }
.mh-meta { display: flex; justify-content: space-between; gap: 12px; margin-top: 6px; font-weight: 600; font-size: 0.95em; text-align: left; }
.mh-teacher { margin-top: 2px; text-align: left; }
.mh-rule { border: 0; border-top: 2px solid #000; margin: 6px 0 0; }
.pb-eq .frac { display: inline-flex; flex-direction: column; vertical-align: middle; text-align: center; margin: 0 2px; font-size: 0.95em; }
.pb-eq .num { border-bottom: 1px solid currentColor; padding: 0 3px; } .pb-eq .den { padding: 0 3px; }
.pb-eq .sqrt { display: inline-flex; align-items: flex-start; } .pb-eq .rad-body { border-top: 1px solid currentColor; padding: 0 2px; } .pb-eq .root-idx { font-size: 0.6em; align-self: flex-start; }
.pb-eq .txt { font-style: normal; } .pb-eq .op { font-style: normal; } .pb-eq sup, .pb-eq sub { font-size: 0.7em; }