.stat-row.four{grid-template-columns:repeat(4,1fr)}.bottom-nav a{width:min(16.666%,118px);font-size:11px}.account{display:flex;align-items:center;gap:9px;font-size:13px;font-weight:700}.compact{padding:8px 11px;border-radius:10px}.light{color:#fff!important;border-color:#ffffff55}.auth-shell{display:grid;gap:22px;align-items:center;min-height:65vh}.auth-copy p{color:var(--muted);max-width:520px;line-height:1.6}.auth-card,.admin-form{display:grid;gap:15px}.auth-card label,.admin-form label{display:grid;gap:7px;font-size:13px;font-weight:750}.auth-card input,.admin-form input,.admin-form select{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:12px;background:#fff;font:inherit}.quick-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:24px}.quick{text-decoration:none;color:var(--ink);display:grid;gap:5px}.quick span{color:var(--muted);font-size:14px}.quick.accent{background:#30120f;color:#fff}.quick.accent span{color:#f2c7c1}.filter-row,.mastery{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}.status-chip{padding:10px 13px;border-radius:99px;font-size:13px}.status-chip.known{background:#dcfae6;color:#067647}.status-chip.review{background:#fff0c7;color:#8a4800}.status-chip.unknown{background:#fee4e2;color:#b42318}.status-chip.unanswered{background:#ece8e4;color:#554d47}.answer.picked{border-color:var(--red);background:#fff1f0}.question-state{margin-top:16px;color:var(--muted);font-size:13px}.exam-rule{display:inline-grid;margin-right:28px}.exam-rule strong{font-size:25px}.exam-rule span{color:var(--muted)}.composition{margin-top:12px}.result-card{text-align:center;max-width:620px;margin:30px auto}.stat-line,.history,.user-row{display:grid;grid-template-columns:1fr auto;gap:10px;text-decoration:none;color:var(--ink);margin-bottom:10px}.stat-line .progress{grid-column:1/-1}.history span,.user-row span{color:var(--muted);font-size:14px}.user-row>div{display:grid;gap:4px}.user-list{display:grid;gap:10px}
@media(min-width:760px){.auth-shell{grid-template-columns:1.1fr .9fr}.admin-form{grid-template-columns:repeat(2,1fr)}.admin-form h2,.admin-form button{grid-column:1/-1}}
@media(max-width:560px){.stat-row.four{grid-template-columns:repeat(2,1fr)}.account span{display:none}.bottom-nav a{font-size:9px}.bottom-nav a span{font-size:17px}.quiz-actions{flex-direction:column}.quick-grid{grid-template-columns:1fr}.exam-rule{margin-right:13px}.topbar{padding-right:12px}}
.question-image{display:block;max-width:min(100%,620px);max-height:360px;object-fit:contain;margin:0 auto 22px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px}
.review-report{margin-top:30px}.review-group{margin-top:24px}.review-count{display:grid;place-items:center;min-width:34px;height:34px;padding:0 10px;border-radius:99px;background:#ece8e4;font-weight:800}.review-item{margin-bottom:10px}.review-item summary{display:flex;gap:12px;align-items:flex-start;cursor:pointer;font-weight:750;line-height:1.4;list-style:none}.review-item summary::-webkit-details-marker{display:none}.review-badge{flex:0 0 30px;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;color:#fff}.review-badge.correct{background:var(--green)}.review-badge.wrong{background:var(--red)}.review-badge.blank{background:#776e68}.review-answer{display:grid;gap:4px;margin-top:15px;padding:12px 14px;border-radius:12px;background:#fff1f0}.review-answer span,.review-explanation span{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:800}.review-answer.correct-text{background:#ecfdf3}.review-explanation{margin-top:12px;padding:12px 14px;background:#f2eee9;border-radius:12px}.review-explanation p{margin:6px 0 0}.question-image.mini{max-height:220px;margin-top:16px}.nav-actions{align-items:stretch}
.settings-total{margin-top:8px;padding:14px 16px;border-radius:12px;background:#fff5f2;border:1px solid #efc3bd;font-size:1.05rem}.settings-total strong{color:#b42318;font-size:1.3rem}
.backup-card{margin-top:18px}.backup-file{display:inline-flex;align-items:center;justify-content:center;cursor:pointer}
.brand-logo{display:block;flex:0 0 42px;width:42px;height:42px;overflow:hidden;border-radius:12px;background:#000;border:1px solid var(--line)}.brand-logo img{display:block;width:100%;height:100%;object-fit:contain}
@media(max-width:470px){.brand>span:last-child{font-size:12px;max-width:112px;line-height:1.05}.close-app{font-size:11px;padding:9px}.topbar{gap:5px}}
.trainer-explanation p,.feedback p,.explanation-copy{white-space:pre-line;line-height:1.7;overflow-wrap:anywhere}.trainer-explanation p{margin:10px 0 0}.review-explanation .explanation-copy{margin-top:8px;color:var(--ink)}.result-score-label{margin-top:12px;color:var(--muted);font-size:13px;font-weight:800;text-transform:uppercase;letter-spacing:.09em}.result-score{font-size:clamp(38px,10vw,62px);color:var(--red);margin:4px 0 20px}.score-formula{padding:12px 14px;border-radius:12px;background:#f5f1ec}.review-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;position:sticky;top:76px;z-index:5;background:var(--cream);padding:8px 0}.review-tabs a{text-align:center;text-decoration:none;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:12px;padding:11px 6px;font-weight:800}.review-tabs .wrong{color:var(--red)}.review-tabs .correct{color:var(--green)}.review-item summary small{display:block;color:var(--muted);font-size:11px;margin-bottom:4px}@media(max-width:480px){.review-tabs a{font-size:11px}.result-card .stat-row{grid-template-columns:repeat(3,1fr)}.result-card .stat strong{font-size:22px}}
.rotation-card{margin-bottom:12px;background:linear-gradient(135deg,#fff8e8,#fff);border-color:#f3d28a}.rotation-card h2{margin-top:0}.update-dialog-backdrop{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;padding:20px;background:#17212bcc;backdrop-filter:blur(4px)}.update-dialog{width:min(100%,560px);max-height:calc(100vh - 40px);overflow:auto;margin:0}.update-dialog h2{margin:7px 0 10px}.update-dialog p{line-height:1.55}.update-check-button{white-space:nowrap}@media(max-width:620px){.update-check-button{font-size:0;width:38px;height:38px;padding:0}.update-check-button::after{content:'↻';font-size:22px}.account{gap:5px}}
.update-spinner{width:44px;height:44px;margin:0 auto 18px;border:5px solid #eaded8;border-top-color:var(--red);border-radius:50%;animation:update-spin .8s linear infinite}@keyframes update-spin{to{transform:rotate(360deg)}}.settings-users{margin-top:28px}.user-privacy-note{margin-bottom:12px;background:#eef8f2;border-color:#b8dfc7}.user-privacy-note p{margin-bottom:0}.settings-user-list{margin-top:12px}.settings-user-row{align-items:center}.user-progress-line{margin-top:4px}.user-progress-line strong{color:var(--ink)}.current-user-label{display:inline-block;margin-left:7px;padding:3px 7px;border-radius:99px;background:#e8f5e9;color:#267447;font-size:10px;vertical-align:middle}@media(max-width:560px){.settings-user-row{grid-template-columns:1fr}.settings-user-row button{justify-self:start}}
.exam-timer{--time-percent:100%;position:relative;display:grid;grid-template-columns:1fr auto;align-items:center;gap:2px 18px;width:min(100%,360px);overflow:hidden;margin:0 0 18px auto;padding:14px 18px 18px;border:2px solid #039855;border-radius:16px;background:#ecfdf3;box-shadow:0 8px 24px #027a4824;color:#05603a}.exam-timer::after{content:'';position:absolute;left:0;bottom:0;width:var(--time-percent);height:6px;background:currentColor;transition:width .4s linear,background-color .25s ease}.exam-timer-label{font-size:12px;font-weight:850;text-transform:uppercase;letter-spacing:.09em}.exam-timer strong{grid-row:1/3;grid-column:2;font-variant-numeric:tabular-nums;font-size:clamp(34px,8vw,50px);line-height:1;color:inherit}.exam-timer-note{font-size:12px;color:inherit;opacity:.78}.exam-timer.green{border-color:#039855;background:#ecfdf3;color:#027a48}.exam-timer.yellow{border-color:#eaaa08;background:#fffbdc;color:#946200}.exam-timer.orange{border-color:#f79009;background:#fff4e5;color:#c34b0a}.exam-timer.danger{border-color:#b42318;background:#fee4e2;color:#912018;animation:timer-pulse 1s ease-in-out infinite}.exam-timer.danger strong{color:#912018}@keyframes timer-pulse{50%{box-shadow:0 8px 30px #b4231866;transform:scale(1.015)}}@media(max-width:520px){.exam-timer{width:min(100%,330px);grid-template-columns:1fr auto;padding:11px 13px 15px}.exam-timer strong{font-size:34px}.exam-timer-note{max-width:180px;font-size:10px}}
.question-overview{margin:-4px 0 18px;padding:13px 14px;border:1px solid var(--line);border-radius:16px;background:#fff}.question-overview-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:10px}.question-overview-head span{font-size:12px;color:var(--muted)}.question-dots{display:flex;gap:7px;overflow-x:auto;overscroll-behavior-x:contain;padding:3px 2px 10px;scrollbar-width:thin;scrollbar-color:#c9bdb5 transparent}.question-dot{flex:0 0 32px;width:32px;height:32px;padding:0;border:2px solid #d0c8c2;border-radius:50%;background:#f2eee9;color:#665d57;font-size:11px;font-weight:850;box-shadow:none}.question-dot.answered{border-color:#1570ef;background:#eaf2ff;color:#175cd3}.question-dot.correct{border-color:#039855;background:#ecfdf3;color:#027a48}.question-dot.wrong{border-color:#d92d20;background:#fef3f2;color:#b42318}.question-dot.blank{border-color:#b9a58f;background:#f5f1ec;color:#6f6258}.question-dot.current{outline:3px solid #f5a7a1;outline-offset:2px;border-color:#b42318;transform:scale(1.08)}.question-legend{display:flex;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:11px}.question-legend span{display:inline-flex;align-items:center;gap:5px}.question-legend i{width:10px;height:10px;border:2px solid #d0c8c2;border-radius:50%;background:#f2eee9}.question-legend i.answered{border-color:#1570ef;background:#eaf2ff}.question-legend i.correct{border-color:#039855;background:#ecfdf3}.question-legend i.wrong{border-color:#d92d20;background:#fef3f2}.question-legend i.current{border-color:#b42318;outline:2px solid #f5a7a1}.preset-manager{margin-bottom:12px}.preset-title{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.preset-title h2{margin:4px 0}.preset-active-badge{padding:7px 11px;border-radius:99px;background:#ecfdf3;color:#027a48;font-size:12px;font-weight:850}.personal-preset-form{display:grid;gap:13px;margin-top:16px}.personal-preset-form label{display:grid;gap:6px;font-size:12px;font-weight:800}.personal-preset-form input{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:11px;background:#fff;font:inherit}.preset-name-field{max-width:480px}.preset-fields{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.saved-presets{display:grid;gap:8px;margin-top:22px}.saved-presets h3{margin:0 0 3px}.preset-row{display:grid;grid-template-columns:1fr auto;align-items:center;gap:12px;padding:12px 13px;border:1px solid var(--line);border-radius:13px;background:#fff}.preset-row.active{border-color:#84c69e;background:#f3fbf6}.preset-row>div:first-child{display:grid;gap:4px}.preset-row span{color:var(--muted);font-size:12px}.preset-row-actions{display:flex;gap:6px}.danger-text{color:#b42318!important}@media(max-width:700px){.preset-fields{grid-template-columns:repeat(2,1fr)}}@media(max-width:480px){.question-overview{padding:11px}.question-overview-head{align-items:flex-start}.question-overview-head span{max-width:130px;text-align:right}.question-dot{flex-basis:30px;width:30px;height:30px}.preset-title,.preset-row{grid-template-columns:1fr}.preset-title{display:grid}.preset-active-badge{justify-self:start}.preset-row-actions{justify-content:flex-start;flex-wrap:wrap}}
.delivery-confirm{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;padding:1rem;background:rgba(12,18,28,.68);backdrop-filter:blur(4px)}.delivery-confirm-card{width:min(100%,31rem);padding:1.45rem;border:1px solid rgba(255,255,255,.15);border-radius:22px;background:var(--surface,#fff);box-shadow:0 24px 70px rgba(0,0,0,.3)}.delivery-confirm-card h2{margin:.3rem 0 .7rem;font-size:clamp(1.35rem,5vw,1.8rem)}.delivery-confirm-card p{margin:0;color:var(--muted,#5d6573);line-height:1.55}.delivery-confirm-card .quiz-actions{margin-top:1.25rem}
.mastery-summary{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:28px;margin-bottom:18px;background:linear-gradient(135deg,#fff,#fff8f5)}
.mastery-copy h2{margin:5px 0 8px}.mastery-copy p{color:var(--muted);line-height:1.5}.mastery-legend{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px 16px;margin-top:18px}.mastery-legend span{display:flex;align-items:center;gap:7px;color:var(--muted);font-size:13px}.mastery-legend i{width:12px;height:12px;border-radius:50%}.mastery-legend i.known{background:#039855}.mastery-legend i.review{background:#eaaa08}.mastery-legend i.unknown{background:#d92d20}.mastery-legend i.unanswered{background:#b8aea7}.mastery-legend b{color:var(--ink)}
.mastery-pie{position:relative;display:grid;place-items:center;width:clamp(160px,22vw,220px);aspect-ratio:1;border-radius:50%;background:conic-gradient(#039855 0 var(--pie-known),#eaaa08 var(--pie-known) var(--pie-review),#d92d20 var(--pie-review) var(--pie-unknown),#d7d0ca var(--pie-unknown) 100%);box-shadow:inset 0 0 0 1px #0000000d}.mastery-pie::before{content:'';position:absolute;inset:21%;border-radius:50%;background:#fff;box-shadow:0 3px 14px #3b28201a}.mastery-pie>span{position:relative;z-index:1;display:grid;text-align:center}.mastery-pie b{font-size:clamp(28px,5vw,42px);line-height:1}.mastery-pie small{margin-top:5px;color:var(--muted);font-size:11px}
.targeted-section{margin-top:26px}.targeted-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.targeted-card{display:flex;flex-direction:column;align-items:flex-start;gap:8px}.targeted-card h3{margin:3px 0}.targeted-card p{flex:1;margin:0 0 8px;color:var(--muted);font-size:13px;line-height:1.5}.priority-badge{padding:5px 8px;border-radius:99px;background:#fff0c7;color:#8a4800;font-size:10px;font-weight:850;text-transform:uppercase;letter-spacing:.05em}.targeted-empty{margin-top:22px;background:#fff8e8}
.quiz-result-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.quiz-result-summary .card{display:grid;gap:6px}.quiz-result-summary span{color:var(--muted);font-size:12px;font-weight:800}.quiz-result-summary strong{font-size:32px;color:var(--red)}.quiz-result-summary small{color:var(--muted);line-height:1.4}.subject-stat-list{display:grid;gap:10px}.subject-stat{display:grid;grid-template-columns:minmax(150px,.8fr) 1.5fr;gap:12px;text-decoration:none;color:var(--ink)}.subject-stat>div:first-child{display:grid;gap:4px}.subject-stat>div:first-child span{color:var(--muted);font-size:12px}.subject-stat .progress{grid-column:1/-1}.subject-mini-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}.subject-mini-stats span{padding:7px 6px;border-radius:8px;font-size:10px;font-weight:800;text-align:center}.subject-mini-stats .known{background:#dcfae6;color:#067647}.subject-mini-stats .review{background:#fff0c7;color:#8a4800}.subject-mini-stats .unknown{background:#fee4e2;color:#b42318}.subject-mini-stats .unanswered{background:#ece8e4;color:#554d47}.quiz-history{align-items:center}.quiz-history>div{display:grid;gap:3px}.quiz-history small{color:var(--muted);font-weight:500;line-height:1.35}
.explanation-details{margin-top:14px;border:1px solid #dbcfc8;border-radius:13px;background:#f7f3ef;overflow:hidden}.explanation-details>summary{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;cursor:pointer;color:var(--ink);font-weight:850;list-style:none}.explanation-details>summary::-webkit-details-marker{display:none}.explanation-details[open]>summary{border-bottom:1px solid #dbcfc8;background:#eee7e1}.explanation-chevron{font-size:20px;line-height:1;transition:transform .2s ease}.explanation-details[open] .explanation-chevron{transform:rotate(180deg)}.explanation-details .explanation-copy{padding:14px;color:var(--ink);white-space:pre-line;line-height:1.7;overflow-wrap:anywhere}.review-item>.explanation-details{margin-bottom:2px}
@media(max-width:760px){.targeted-grid,.quiz-result-summary{grid-template-columns:1fr}.mastery-summary{grid-template-columns:1fr}.mastery-pie{grid-row:1;justify-self:center}.subject-stat{grid-template-columns:1fr}.subject-mini-stats{grid-template-columns:repeat(2,1fr)}}
@media(max-width:460px){.mastery-legend{grid-template-columns:1fr}.quiz-history{grid-template-columns:1fr}.quiz-history span{text-align:left}.mastery-pie{width:170px}}