@font-face{font-family:"BIZ UDPGothic";src:url("fonts/BIZUDPGothic-Regular.ttf") format("truetype");font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:"BIZ UDPGothic";src:url("fonts/BIZUDPGothic-Bold.ttf") format("truetype");font-weight:700;font-style:normal;font-display:swap}
:root{--ink:#14283f;--blue:#2257c7;--muted:#617084;--line:#dce3eb;--paper:#fff;--bg:#f2f5f9;--green:#176749;--red:#a83430;font-family:"BIZ UDPGothic","BIZ UDPゴシック",sans-serif;color:var(--ink);background:var(--bg);font-size:16px}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.42}a{color:var(--blue);text-underline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #e49b24;outline-offset:3px}[hidden]{display:none!important}.topbar{height:88px;background:var(--ink);color:#fff;padding:0 4%;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:15px;color:white;text-decoration:none;font-size:1.35rem;font-weight:700;letter-spacing:.05em}.brandmark{border:1px solid #7890ad;width:48px;height:48px;display:grid;place-items:center;font-family:inherit;font-size:1.5rem;letter-spacing:0}.brand small{display:block;font-size:.75rem;font-weight:400;color:#c5d3e4;margin-top:3px;letter-spacing:.06em}.edition{font-size:.9rem;display:flex;align-items:center;gap:18px}.pill{font-size:.75rem;border:1px solid #6c819b;padding:4px 10px;border-radius:3px}.shell{display:grid;grid-template-columns:245px minmax(0,1fr);max-width:1600px;margin:auto;min-height:calc(100vh - 88px)}.sidebar{padding:38px 24px;border-right:1px solid var(--line);background:#fff}.eyebrow{font-size:.75rem;font-weight:700;letter-spacing:.12em;color:var(--muted);margin:0 0 9px}.sidebar h1{font-size:1.35rem;margin:0 0 30px;font-weight:650}#mode-nav{display:grid;gap:8px}#mode-nav button{background:none;border:1px solid transparent;text-align:left;padding:16px;border-radius:6px;color:var(--ink)}#mode-nav button span{font-weight:700;font-size:1.05rem}#mode-nav button small{display:block;color:var(--muted);font-size:.8rem;margin-top:5px}#mode-nav button[aria-current=page]{background:#eaf0fc;border-color:#baccf0;box-shadow:inset 3px 0 var(--blue);color:var(--blue)}.side-info{border-top:1px solid var(--line);margin-top:36px;padding-top:18px;font-size:.75rem;line-height:1.8;color:var(--muted)}.side-info a{font-size:.8rem}main{min-width:0;padding:36px 42px}.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;gap:20px}.section-heading h2{font-family:inherit;font-weight:700;font-size:2rem;margin:0}.section-heading>p{font-size:.875rem;color:var(--muted)}.progress-line{display:flex;justify-content:space-between;gap:12px;font-size:.8rem;margin-bottom:8px;color:var(--muted)}#progress-text{font-weight:600;color:var(--ink)}progress{width:100%;height:5px;display:block;border:0;border-radius:0;margin-bottom:26px;background:#dce3ee}progress::-webkit-progress-bar{background:#dce3ee}progress::-webkit-progress-value{background:var(--blue)}progress::-moz-progress-bar{background:var(--blue)}.am-layout{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:24px;align-items:start}.paper-card{background:var(--paper);border:1px solid var(--line);border-radius:8px;overflow:hidden;box-shadow:0 3px 12px #18304c04}.paper-heading{padding:22px 26px 12px;display:flex;align-items:center;justify-content:space-between;gap:12px}.paper-heading h3{margin:0;font-size:1.2rem}.paper-heading a{font-size:.8rem;white-space:nowrap}.source{color:var(--muted);font-size:.75rem;line-height:1.7;margin:0 26px 18px}.question-image{display:block;width:calc(100% - 32px);height:auto;margin:0 16px 14px}.answer-area{padding:22px 26px;background:#fbfcfe;border-top:1px solid #e8edf3}.answer-label{font-size:.875rem;font-weight:600;margin:0 0 12px}.choices{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.choices button{background:#fff;border:1px solid #cbd5e2;padding:13px;border-radius:5px;font-weight:600;color:var(--ink)}.choices button[aria-pressed=true]{border-color:var(--blue);background:#eaf0fc;color:var(--blue);box-shadow:inset 0 0 0 1px var(--blue)}.choices button:hover{border-color:var(--blue)}.answer-actions{display:flex;align-items:center;gap:20px;margin-top:20px}.primary{background:var(--blue);color:white;border:1px solid var(--blue);border-radius:5px;padding:12px 20px;font-size:.875rem;font-weight:600}.primary:hover{background:#1746ad}.text-button{background:none;border:0;color:var(--muted);font-size:.8rem;padding:10px 0}.feedback{margin-top:18px;padding:16px 18px;border-left:3px solid var(--green);background:#eef7f2;color:var(--green);font-size:.9rem;line-height:1.8}.feedback.wrong{background:#fff2f1;border-color:var(--red);color:var(--red)}.feedback small{display:block;color:var(--muted);font-size:.75rem}.question-pager{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding:15px 22px;gap:8px}.question-pager button,.document-pager button{background:#fff;border:1px solid var(--line);border-radius:4px;padding:9px 12px;font-size:.8rem;color:var(--ink)}.question-pager span{font-size:.75rem;color:var(--muted);white-space:nowrap}.question-index{padding:8px 0}.question-index h3{font-size:.9rem;margin:0 0 16px}.question-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}.question-grid button{position:relative;background:white;color:var(--ink);border:1px solid #d4dde9;border-radius:4px;aspect-ratio:1;font-size:.8rem;padding:0 0 5px}.question-grid button[aria-current=true]{outline:2px solid var(--blue);outline-offset:1px}.question-grid .correct{background:#eaf5ee;color:var(--green);border-color:#9ccbb2}.question-grid .incorrect{background:#fff0ef;color:var(--red);border-color:#e5b9b6}.question-grid .answered{background:#eaf0fc;color:var(--blue)}.question-grid .mark{display:block;height:8px;font-size:.625rem;line-height:8px}.legend{font-size:.75rem;color:var(--muted);line-height:1.8;margin:16px 0 22px}.secondary{background:white;border:1px solid #bbc9dc;border-radius:5px;padding:12px 9px;color:var(--ink);font-size:.8rem;font-weight:600}.wide{width:100%}.download-link{font-size:.75rem;display:inline-block;margin-top:20px}.summary{background:#e8eef8;padding:16px;margin-top:15px;border-radius:5px;font-size:.85rem;line-height:1.8}.summary strong{display:block;font-size:1.8rem}.pm-top{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:22px}.pm-top label{display:grid;gap:9px;font-size:.8rem;font-weight:700}.pm-top p{font-size:.8rem;color:var(--muted)}select{padding:9px 34px 9px 12px;background:white;border:1px solid #bbc9dc;border-radius:4px;color:var(--ink);max-width:100%;font-size:.875rem}.pm-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:22px;align-items:start}.document-tabs{display:flex;border-bottom:1px solid var(--line);margin:0 22px}.document-tabs button{border:0;border-bottom:3px solid transparent;background:none;padding:14px 16px;color:var(--muted);font-size:.875rem}.document-tabs button[aria-pressed=true]{color:var(--blue);border-bottom-color:var(--blue);font-weight:700}.document-pager{display:flex;justify-content:center;gap:18px;align-items:center;padding:18px 16px}.document-pager label{font-size:.8rem;display:flex;align-items:center;gap:10px}.document-image{display:block;width:100%;height:auto}.image-hint{font-size:.75rem;color:var(--muted);text-align:center;margin:0 12px 20px}.pm-answer{position:sticky;top:20px}.answer-card{padding:23px}.answer-card h3{margin:0 0 12px;font-size:1rem}.muted{font-size:.75rem;line-height:1.8;color:var(--muted)}.writing-field{display:block;font-size:.875rem;font-weight:600;margin:20px 0}.writing-field textarea{display:block;width:100%;resize:vertical;min-height:120px;max-height:500px;margin-top:9px;border:1px solid #bccbdf;border-radius:4px;padding:12px;font-size:.875rem;line-height:1.7;color:var(--ink);font-weight:400}.self-score{border-top:1px solid var(--line);margin-top:25px;padding-top:22px}.self-score>label{font-size:.875rem;font-weight:600}.self-score label span{font-size:.75rem;font-weight:400;color:var(--muted)}.score-input{display:flex;align-items:center;gap:10px;margin-top:12px}.score-input input{width:95px;padding:10px;border:1px solid #bccbdf;border-radius:4px}.self-score #self-status{font-size:.8rem;color:var(--green)}.resources{margin-top:40px;border-top:1px solid var(--line);padding-top:24px}.resources h3{font-size:1rem;margin:0 0 10px}.resources>p{font-size:.8rem;color:var(--muted);line-height:1.7}.resource-row{display:flex;align-items:center;flex-wrap:wrap;gap:14px 22px;margin:14px 0;font-size:.8rem}.resource-row strong{min-width:52px}.resource-row a{white-space:nowrap}footer{font-size:.75rem;color:var(--muted);line-height:1.9;border-top:1px solid var(--line);margin-top:28px;padding-top:20px}footer p{margin:0 0 8px}@media(min-width:1400px){main{padding:40px 48px}.am-layout{grid-template-columns:minmax(0,1fr) 238px}}@media(max-width:1100px){.shell{grid-template-columns:205px minmax(0,1fr)}.sidebar{padding:30px 16px}main{padding:30px 25px}.am-layout{grid-template-columns:minmax(0,1fr)}.question-index{padding:20px;background:#fff;border:1px solid var(--line);border-radius:8px}.question-grid{grid-template-columns:repeat(13,1fr)}.question-grid button{min-height:34px}.question-index .wide{width:auto;padding:12px 20px}.pm-layout{grid-template-columns:minmax(0,1fr)}.pm-answer{position:static}.writing-field textarea{min-height:100px}.pm-top{display:block}.pm-top select{width:100%}.summary{max-width:380px}}@media(max-width:700px){.topbar{height:76px;padding:0 18px}.brand{font-size:1.1rem;gap:10px}.brandmark{width:38px;height:38px;font-size:1.25rem}.brand small{font-size:.625rem}.edition{font-size:.75rem;gap:7px}.edition .pill{display:none}.shell{display:block}.sidebar{padding:20px 18px 0;background:white;border:0;border-bottom:1px solid var(--line)}.sidebar h1{font-size:1rem;margin:0 0 14px}.sidebar .eyebrow,.side-info{display:none}#mode-nav{grid-template-columns:repeat(3,1fr);gap:6px}#mode-nav button{padding:12px 8px;text-align:center;border-radius:5px 5px 0 0}#mode-nav button small{font-size:.625rem}#mode-nav button[aria-current=page]{box-shadow:inset 0 -3px var(--blue)}main{padding:24px 14px}.section-heading{margin-bottom:20px}.section-heading h2{font-size:1.65rem}.section-heading>p{font-size:.75rem}.section-heading .eyebrow{font-size:.625rem}.progress-line{font-size:.75rem}#score-text{display:none}.paper-heading{padding:18px 18px 10px}.source{margin:0 18px 14px;font-size:.625rem}.question-image{width:calc(100% - 12px);margin:0 6px 12px}.answer-area{padding:18px}.choices{gap:9px}.question-pager{padding:14px 12px}.question-grid{grid-template-columns:repeat(8,1fr)}.answer-actions{gap:15px}.document-tabs{margin:0 12px}.document-tabs button{padding:13px}.resources{margin-top:30px}.pm-top select{font-size:.8rem}.question-pager button{padding:9px;font-size:.75rem}}@media(prefers-reduced-motion:no-preference){button{transition:background .14s,border-color .14s}}

/* Blank-by-blank afternoon practice */
.section-picker{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:.875rem;font-weight:600;margin:18px 0}
.grading-actions .primary{width:100%}.pm-grade-summary{padding:13px;background:#edf2fb;border-radius:5px;margin:16px 0;font-size:.8rem;line-height:1.7}.pm-grade-summary p{margin:5px 0}.pm-grade-summary small{color:var(--muted);font-size:.75rem}
.grading-note{font-size:.75rem;line-height:1.8;margin:15px 0;color:var(--muted)}summary{cursor:pointer}.grading-note summary{font-weight:600;color:var(--ink)}
.answer-group{padding:0;border:0;border-top:1px solid var(--line);margin:22px 0}.answer-group legend{font-size:.85rem;font-weight:700;padding-right:12px}
.blank-row{padding:16px 0;border-bottom:1px solid #edf0f5;display:grid;grid-template-columns:1fr auto;gap:9px}.blank-label{grid-column:1/-1;font-weight:700;font-size:.95rem}
.blank-row>input,.blank-row>textarea{width:100%;min-width:0;font-size:1rem;padding:10px;border:1px solid #bdcadd;border-radius:4px;line-height:1.6;resize:vertical;color:var(--ink)}
.field-check{align-self:start;padding:12px 10px;font-size:.75rem}.field-feedback{grid-column:1/-1;font-size:.8rem;line-height:1.8;overflow-wrap:anywhere}.field-feedback:empty{display:none}.field-feedback>strong,.field-feedback>small{display:block}.field-feedback>small{font-size:.75rem;color:var(--muted)}.field-feedback.correct>strong{color:var(--green)}.field-feedback.incorrect>strong{color:var(--red)}.field-feedback.review>strong{color:#825c09}.field-feedback details{margin-top:7px;background:#f3f6fa;padding:10px}.field-feedback details p{white-space:pre-wrap;margin:8px 0}.field-feedback select{display:block;margin-top:8px;font-size:.8rem}
.pm-layout{grid-template-columns:minmax(0,1.2fr) minmax(330px,1fr)}.pm-answer{position:static}.pm-paper{position:sticky;top:12px;max-height:calc(100vh - 24px);overflow-y:auto}.answer-card{padding:20px}
@media(max-width:1100px){.pm-layout{grid-template-columns:minmax(0,1fr)}.pm-paper{position:static;max-height:65vh}.pm-answer{position:static}}

.account-bar{display:flex;align-items:center;flex-wrap:wrap;justify-content:space-between;gap:12px;background:#fff;border:1px solid var(--line);border-radius:6px;padding:16px 20px;margin-bottom:28px;font-size:.875rem}.account-bar p{font-size:.75rem;color:var(--muted);margin:6px 0 0;line-height:1.7}.account-bar #account-controls{display:flex;gap:15px;align-items:center}.account-bar #choose-progress{flex-basis:100%;border-top:1px solid var(--line);padding-top:12px}.account-bar #choose-progress button{margin:10px 8px 0 0}dialog{border:1px solid var(--line);border-radius:10px;padding:28px;max-width:460px;width:calc(100% - 30px);color:var(--ink)}dialog::backdrop{background:#14283f99}.auth-heading{display:flex;justify-content:space-between;align-items:center}.auth-heading h2{font-size:1.35rem}#auth-form label{display:block;font-weight:600;font-size:.875rem;margin:20px 0 8px}#auth-form input{display:block;width:100%;margin-top:8px;border:1px solid #bdcadd;border-radius:4px;padding:12px;font-size:1rem}#auth-form small{font-size:.75rem;line-height:1.8;color:var(--muted);display:block}.auth-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}#auth-error{color:var(--red);font-size:.875rem;line-height:1.7}

.year-picker{display:block;font-size:13px;font-weight:700;margin:16px 0}.year-picker select{display:block;width:100%;margin-top:6px;padding:10px;border:1px solid #c8d2dd;border-radius:8px;background:white;color:#14283f}.affiliate-section{margin-top:40px;padding:24px;border:1px solid #d5dde4;border-radius:12px;background:#f5f7fa}.ad-label{font-size:12px;font-weight:700;color:#516171;letter-spacing:.05em}.book-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:20px 0}.book-grid article{padding:18px;background:white;border:1px solid #dde4ea;border-radius:10px}.book-grid h4{line-height:1.6;margin:10px 0}.book-grid p{font-size:13px}.book-edition{font-size:12px;color:#516171}.pdf-loading{min-height:100px;opacity:.4}.pdf-error{color:#9c2525;font-size:14px}.field-feedback a{display:block;font-size:12px;margin:8px 0}@media(max-width:760px){.book-grid{grid-template-columns:1fr}.affiliate-section{padding:18px}}

/* Keep supplied Rakuten markup and tracking URLs; adapt only its surrounding layout. */
.rakuten-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,514px),1fr));gap:16px;margin:20px 0}.rakuten-embed{min-width:0;max-width:100%;container-type:inline-size}.rakuten-embed>table{max-width:100%}.rakuten-embed>table>tbody>tr>td>div{max-width:100%}.rakuten-embed img{max-width:100%;height:auto}@container(max-width:510px){.rakuten-embed>table,.rakuten-embed>table>tbody,.rakuten-embed>table>tbody>tr,.rakuten-embed>table>tbody>tr>td{display:block;width:100%}.rakuten-embed>table>tbody>tr>td>div{width:100%!important}.rakuten-embed table table{width:100%;table-layout:fixed}.rakuten-embed table table>tbody>tr>td{display:block!important;width:100%!important}.rakuten-embed table table>tbody>tr>td:last-child{padding-top:10px;padding-bottom:12px}.rakuten-embed table table>tbody>tr>td:last-child>div{display:flow-root}}

.top-link{color:white;white-space:nowrap;font-size:.85rem}.brand{font-size:1.1rem;letter-spacing:0}.brand small{font-size:.8rem}#account-controls{display:flex;align-items:center;flex-wrap:wrap;gap:12px}#account-history{text-decoration:none;display:inline-block}.history-main{max-width:1200px;margin:auto}.history-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}.history-heading h1{font-size:1.7rem}.history-heading p{font-size:.85rem;color:var(--muted)}.history-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:24px 0}.history-stats>div{padding:22px;background:white;border:1px solid var(--line);border-radius:10px}.history-stats span,.history-stats small{display:block;font-size:.8rem;color:var(--muted)}.history-stats strong{display:block;font-size:1.6rem;margin:12px 0}.history-filter{display:flex;align-items:center;gap:8px;font-size:.85rem;margin-bottom:20px}.history-year{border:1px solid var(--line);background:white;border-radius:10px;margin-bottom:14px;overflow:hidden}.history-year>summary{padding:20px;display:flex;align-items:center;flex-wrap:wrap;gap:12px 24px;list-style:none}.history-year>summary:before{content:'＋';font-weight:bold}.history-year[open]>summary:before{content:'−'}.history-year>summary>span{font-size:.85rem;color:var(--muted)}.history-body{border-top:1px solid var(--line);padding:24px}.history-body h2{font-size:1.1rem;margin:24px 0 12px}.history-body p{font-size:.85rem;line-height:1.7}.history-question-grid{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:8px}.history-question{padding:10px 4px;text-align:center;background:#f5f7fa;border-radius:6px;display:grid;gap:8px;font-size:.8rem}.history-question small{font-size:.65rem}.history-question.correct{background:#eaf5ee;color:var(--green)}.history-question.incorrect{background:#fff0ef;color:var(--red)}.history-question.pending{background:#eaf0fc;color:var(--blue)}.history-pm-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px}.history-pm{border:1px solid var(--line);border-radius:8px;padding:16px}.history-pm h3{font-size:.95rem}.history-pm strong{font-size:.85rem}.history-error{color:var(--red)!important}.history-empty{padding:28px;background:white;line-height:1.8}#history-login{padding:24px;background:white;border-radius:10px}#history-login a{display:inline-block;text-decoration:none}@media(max-width:700px){.brand{font-size:.85rem;gap:8px}.brand small{font-size:.7rem}.brandmark{display:none}.topbar{gap:12px}.edition{font-size:.65rem}.history-stats{grid-template-columns:1fr;gap:10px}.history-stats>div{padding:16px}.history-stats strong{margin:8px 0;font-size:1.4rem}.history-heading h1{font-size:1.3rem}.history-year>summary{padding:16px;gap:10px}.history-year>summary>span{width:100%}.history-body{padding:16px}.history-question-grid{grid-template-columns:repeat(5,minmax(0,1fr))}.history-pm-grid{grid-template-columns:1fr}}