:root{--navy-950:#061a3d;--navy-900:#0a2855;--blue-800:#17457f;--blue-700:#2164af;--blue-600:#277ed0;--cyan-400:#4fc4f4;--violet-500:#7857f4;--ink:#15233b;--muted:#68758b;--line:#dce6f2;--surface:#fff;--surface-soft:#f5f8fc;--danger:#d94b62;--success:#1f9d73;--shadow-lg:0 24px 60px #061a3d40}*{box-sizing:border-box;margin:0;padding:0}html,body{min-height:100%}html{background:var(--navy-950)}body{max-width:100vw;color:var(--ink);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif;overflow-x:hidden}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0}button:disabled{cursor:not-allowed;opacity:.55}a{color:inherit;text-decoration:none}button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline-offset:2px;outline:3px solid #4fc4f48c}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.spin{animation:.85s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.login-page,.app-page{background-color:var(--navy-950);background-image:url(/assets/exam-grid-background.png?v=3);background-position:50%;background-size:cover;min-height:100svh}.login-page{place-items:center;padding:28px;display:grid}.login-card{color:#fff;-webkit-backdrop-filter:blur(13px);backdrop-filter:blur(13px);background:#4d7ebb4f;border:1px solid #acd3ff33;border-radius:13px;width:268px;min-height:412px;padding:38px 22px 34px;box-shadow:0 16px 30px #02123252,inset 0 1px #ffffff0d}.login-heading{text-align:center}.login-trophy{color:#55c6f6;filter:drop-shadow(0 0 8px #55c6f661);width:25px;height:25px}.login-heading h1{letter-spacing:.08em;text-shadow:0 2px 9px #0212326b;margin-top:13px;font-size:23px;font-weight:700;line-height:1.2}.login-heading p{color:#e2efff8f;margin-top:8px;font-size:10px;line-height:1.5}.login-divider{color:#775ef5;justify-content:center;align-items:center;gap:6px;margin:10px auto 21px;display:flex}.login-divider hr{border:0;border-top:1px solid #62c0f275;width:33px}.login-form{flex-direction:column;display:flex}.login-form label{color:#f7fbffeb;margin-bottom:8px;font-size:11px;font-weight:600}.required-mark{color:#ff7188}.login-input-wrap{color:#deedff7a;background:#b9d3f42b;border:1px solid #b5d3f71f;border-radius:7px;align-items:center;gap:6px;height:34px;margin-bottom:18px;padding:0 10px;transition:border-color .16s,background-color .16s;display:flex;box-shadow:inset 0 1px 4px #051e471f}.login-input-wrap:focus-within{background:#b9d3f43b;border-color:#4fc4f494}.login-input-wrap input{color:#fff;background:0 0;border:0;outline:0;width:100%;min-width:0;height:100%;font-size:10px}.login-input-wrap input::placeholder{color:#e0edff6b}.login-error{color:#ffb1bd;min-height:18px;margin-top:-7px;font-size:9px;line-height:1.35}.login-submit,.primary-action{color:#fff;background-color:var(--blue-600);background-image:url(/assets/button-gradient.jpg);background-position:50%;background-size:100% 100%;border-radius:9px;justify-content:center;align-items:center;gap:8px;min-height:42px;padding:0 22px;font-size:14px;font-weight:700;transition:transform .15s,filter .15s;display:inline-flex;box-shadow:0 8px 22px #378bec42}.login-submit{border-radius:7px;width:100%;min-height:34px;margin-top:2px;font-size:12px}.login-submit:hover:not(:disabled),.primary-action:hover:not(:disabled){filter:brightness(1.08);transform:translateY(-1px)}.app-page{min-height:100svh;padding:36px 24px}.app-page-centered{place-items:center;display:grid}.content-card{width:min(100%,760px);box-shadow:var(--shadow-lg);background:#fffffff5;border:1px solid #ffffff8c;border-radius:20px;padding:42px}.card-icon,.dialog-icon,.finished-icon{width:54px;height:54px;color:var(--blue-700);background:#eaf4ff;border-radius:16px;place-items:center;margin-bottom:17px;display:grid}.eyebrow{color:var(--blue-600);letter-spacing:.12em;text-transform:uppercase;font-size:12px;font-weight:700}.content-card h1{margin-top:8px;font-size:clamp(25px,4vw,34px);line-height:1.25}.card-lead{color:var(--muted);margin-top:12px;font-size:14px;line-height:1.75}.rule-grid{grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px;display:grid}.rule-grid article{min-height:130px;color:var(--blue-700);background:var(--surface-soft);border:1px solid var(--line);border-radius:14px;flex-direction:column;align-items:flex-start;gap:7px;padding:18px;display:flex}.rule-grid strong{color:var(--ink);font-size:16px}.rule-grid span{color:var(--muted);font-size:12px;line-height:1.6}.rules-note{color:#3c5f87;border-left:3px solid var(--cyan-400);background:#edf6ff;border-radius:8px;margin:20px 0 8px;padding:14px 16px;font-size:13px;line-height:1.65}.form-error{min-height:20px;color:var(--danger);font-size:12px}.form-error-block{margin-bottom:4px}.form-notice{min-height:20px;color:var(--success);font-size:12px}.rules-card>.primary-action{width:100%}.exam-page{justify-content:center;align-items:flex-start;display:flex}.exam-shell{width:min(100%,1140px)}.exam-header{color:#fff;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#1d4b85b8;border:1px solid #bfdcff33;border-radius:15px;justify-content:space-between;align-items:center;gap:20px;padding:18px 22px;display:flex;box-shadow:0 14px 40px #03153338}.exam-header>div:first-child{flex-wrap:wrap;align-items:baseline;gap:12px;display:flex}.exam-header .eyebrow{color:#75d2f7;width:100%}.exam-header strong{font-size:17px}.exam-header span{color:#ebf4ffb3;font-size:12px}.exam-timer{color:#bfeaff;background:#041b426b;border-radius:10px;grid-template-columns:auto 1fr;align-items:center;column-gap:8px;min-width:176px;padding:10px 14px;display:grid}.exam-timer svg{grid-row:span 2}.exam-timer strong{font-variant-numeric:tabular-nums;letter-spacing:.07em}.exam-timer.urgent{color:#ffbdc8;background:#69162f80}.exam-progress-row{color:#eef6ffc7;grid-template-columns:auto 1fr auto;align-items:center;gap:13px;margin:16px 4px;font-size:12px;display:grid}.progress-track{background:#ffffff29;border-radius:999px;height:6px;overflow:hidden}.progress-track span{background:var(--cyan-400);border-radius:inherit;height:100%;transition:width .22s;display:block}.exam-workspace{grid-template-columns:220px minmax(0,1fr);align-items:start;gap:18px;display:grid}.question-navigator{background:#fffffff7;border:1px solid #fff9;border-radius:16px;padding:18px 16px 16px;position:sticky;top:20px;box-shadow:0 16px 40px #061a3d33}.question-navigator>header{border-bottom:1px solid #e8eef5;justify-content:space-between;align-items:center;gap:12px;padding-bottom:13px;display:flex}.question-navigator>header>div{color:var(--blue-600);align-items:center;gap:7px;display:flex}.question-navigator h2{color:var(--ink);font-size:14px}.question-navigator>header>strong{color:var(--blue-700);font-variant-numeric:tabular-nums;font-size:17px}.question-navigator>header>strong span{color:#8a98aa;font-size:10px;font-weight:500}.question-state-legend{color:#738197;justify-content:space-between;align-items:center;gap:6px;padding:12px 0 11px;font-size:9px;display:flex}.question-state-legend span{white-space:nowrap;align-items:center;gap:3px;display:inline-flex}.question-state-legend span:first-child{color:var(--blue-700)}.question-state-legend span:nth-child(2){color:#187552}.question-state-legend svg{flex:none}.question-number-grid{grid-template-columns:repeat(5,1fr);gap:7px;display:grid}.question-number-grid button{color:#64748a;font-variant-numeric:tabular-nums;background:#f8fafc;border:1px solid #dfe7ef;border-radius:8px;min-width:0;min-height:32px;padding:0;font-size:10px;font-weight:700;transition:color .14s,background-color .14s,border-color .14s,transform .14s,box-shadow .14s}.question-number-grid button:hover:not(:disabled){color:var(--blue-700);background:#edf5fc;border-color:#a9cdea;transform:translateY(-1px)}.question-number-grid button.answered{color:#187552;background:#e7f7f0;border-color:#a8dcc9}.question-number-grid button.current{color:#fff;background:var(--blue-600);border-color:var(--blue-600);box-shadow:0 5px 12px #277ed042}.question-navigator>p{color:#8a97a8;text-align:center;margin-top:12px;font-size:9px}.question-card{min-width:0;min-height:500px;box-shadow:var(--shadow-lg);background:#fffffff7;border-radius:18px;padding:34px 38px 28px}.question-meta{gap:8px;display:flex}.question-meta span{color:var(--blue-700);background:#eaf4ff;border-radius:999px;padding:5px 10px;font-size:11px;font-weight:700}.question-meta span:last-child{color:#6550bd;background:#f1edff}.question-card h1{margin:20px 0 26px;font-size:clamp(20px,3vw,25px);line-height:1.65}.question-card h1>span{color:var(--blue-600)}.option-list{border:0;gap:12px;display:grid}.option-item{border:1px solid var(--line);cursor:pointer;background:#f8fafd;border-radius:12px;grid-template-columns:auto 1fr auto;align-items:center;gap:13px;min-height:58px;padding:12px 16px;font-size:14px;line-height:1.55;transition:border-color .15s,background-color .15s,transform .15s;display:grid}.option-item:hover{border-color:#9dc9ed;transform:translate(2px)}.option-item.selected{border-color:var(--blue-600);background:#eef7ff;box-shadow:0 0 0 2px #277ed014}.option-item input{opacity:0;pointer-events:none;position:absolute}.option-key{width:30px;height:30px;color:var(--blue-700);background:#e7f1fb;border-radius:8px;place-items:center;font-weight:700;display:grid}.option-item.selected .option-key{color:#fff;background:var(--blue-600)}.option-check{color:var(--blue-600)}.save-line{min-height:30px;color:var(--muted);justify-content:flex-end;align-items:center;gap:6px;margin-top:10px;font-size:11px;display:flex}.question-actions{border-top:1px solid #edf1f6;justify-content:space-between;gap:12px;padding-top:12px;display:flex}.secondary-action,.topbar-button,.icon-button,.pagination button{color:#33597f;border:1px solid var(--line);background:#fff;border-radius:9px;justify-content:center;align-items:center;gap:7px;min-height:40px;padding:0 18px;font-size:13px;font-weight:600;display:inline-flex}.primary-action.compact,.secondary-action.compact{min-height:40px;padding:0 18px}.modal-backdrop{z-index:30;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#03122bb8;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.confirm-dialog{width:min(100%,430px);box-shadow:var(--shadow-lg);background:#fff;border-radius:18px;padding:30px}.confirm-dialog h2{font-size:22px}.confirm-dialog p{color:var(--muted);margin:12px 0 24px;font-size:13px;line-height:1.7}.dialog-actions{justify-content:flex-end;gap:10px;display:flex}.loading-card{text-align:center;margin:auto}.loading-card>svg{color:var(--blue-600)}.loading-card h1{margin:14px 0 8px}.loading-card p{color:var(--muted);margin-bottom:20px}.finished-card{text-align:center;max-width:540px}.finished-icon{width:86px;height:86px;color:var(--success);background:#e8f8f2;border-radius:50%;margin:0 auto 20px}.finished-card p:not(.eyebrow){color:var(--muted);margin-top:13px;line-height:1.7}.finished-note{color:#46647f;background:#f2f6fa;border-radius:9px;align-items:center;gap:8px;margin-top:26px;padding:10px 14px;font-size:12px;display:inline-flex}.finished-return-row{justify-content:center;margin-top:18px;display:flex}.finished-return{width:min(100%,220px)}.admin-page{background:#eff4f9;min-height:100svh}.admin-topbar{color:#fff;background:var(--navy-900);justify-content:space-between;align-items:center;height:72px;padding:0 max(24px,50vw - 620px);display:flex;box-shadow:0 5px 22px #09265129}.admin-topbar>div{align-items:center;gap:12px;display:flex}.admin-topbar>div>div{flex-direction:column;gap:2px;display:flex}.admin-topbar strong{font-size:15px}.admin-topbar span{color:#e7f2ff9e;font-size:10px}.admin-brand-icon{background:#ffffff1a;border-radius:10px;place-items:center;width:38px;height:38px;display:grid;color:#6ed1f7!important}.topbar-button{color:#e5f1ff;background:#ffffff14;border-color:#ffffff1f;min-height:36px}.admin-container{width:min(100% - 36px,1240px);margin:0 auto;padding:32px 0 48px}.admin-hero{justify-content:space-between;align-items:center;gap:24px;display:flex}.admin-hero h1{margin:6px 0;font-size:28px}.admin-hero p:last-child{color:var(--muted);font-size:13px}.stats-grid{grid-template-columns:repeat(3,1fr);gap:16px;margin:24px 0 18px;display:grid}.stats-grid article{min-height:92px;color:var(--blue-600);background:#fff;border:1px solid #e4ebf3;border-radius:14px;align-items:center;gap:14px;padding:18px 20px;display:flex;box-shadow:0 8px 22px #1d41690f}.stats-grid article div{flex-direction:column;display:flex}.stats-grid span{color:var(--muted);font-size:11px}.stats-grid strong{color:var(--ink);font-size:26px}.stats-grid .stats-text{margin-top:4px;font-size:17px}.admin-grid{grid-template-columns:320px minmax(0,1fr);align-items:start;gap:18px;display:grid}.admin-panel{background:#fff;border:1px solid #e2eaf2;border-radius:15px;overflow:hidden;box-shadow:0 8px 24px #1d41690d}.config-panel{z-index:2;position:relative;overflow:visible}.config-panel .panel-heading{border-radius:15px 15px 0 0}.panel-heading{border-bottom:1px solid #eaf0f5;justify-content:space-between;align-items:center;min-height:61px;padding:0 20px;display:flex}.panel-heading>div{color:var(--blue-700);align-items:center;gap:9px;display:flex}.panel-heading h2{color:var(--ink);font-size:15px}.icon-button{width:36px;min-height:36px;padding:0}.admin-config-form{flex-direction:column;gap:13px;padding:20px;display:flex}.admin-config-form label,.stack-form label{color:#47576d;flex-direction:column;gap:7px;font-size:11px;font-weight:600;display:flex}.admin-config-form input,.stack-form input,.search-field{width:100%;min-height:40px;color:var(--ink);background:#fbfcfe;border:1px solid #dbe5ef;border-radius:8px;outline:0;padding:0 11px}.admin-config-form input:focus,.stack-form input:focus{border-color:var(--blue-600);box-shadow:0 0 0 3px #277ed01a}.filter-row{z-index:3;border-bottom:1px solid #edf1f5;grid-template-columns:minmax(180px,1fr) 160px auto;gap:9px;padding:14px 18px;display:grid;position:relative}.search-field{align-items:center;gap:7px;display:flex}.search-field svg{color:#8391a4}.search-field input{background:0 0;border:0;outline:0;width:100%;min-width:0}.datetime-field{flex-direction:column;gap:7px;display:flex;position:relative}.field-label{color:#47576d;font-size:11px;font-weight:600}.datetime-trigger,.status-select-trigger{width:100%;min-height:42px;color:var(--ink);text-align:left;background:#fbfcfe;border:1px solid #dbe5ef;border-radius:9px;align-items:center;gap:8px;padding:0 11px;transition:border-color .14s,box-shadow .14s,background-color .14s;display:flex}.datetime-trigger:hover,.status-select-trigger:hover{background:#f6f9fc;border-color:#c4d4e4}.datetime-trigger:focus-visible,.status-select-trigger:focus-visible{border-color:var(--blue-600);outline:0;box-shadow:0 0 0 3px #277ed01a}.datetime-trigger>svg:first-child{color:var(--blue-600);flex:none}.datetime-trigger>span{flex:1;font-size:12px;font-weight:500}.datetime-trigger>strong{color:var(--blue-700);font-variant-numeric:tabular-nums;font-size:12px}.datetime-trigger>svg:last-child,.status-select-trigger>svg:last-child{color:#7e8ca0;flex:none;transition:transform .14s}.datetime-trigger>svg.is-open,.status-select-trigger>svg.is-open{transform:rotate(180deg)}.datetime-popover{z-index:50;width:520px;color:var(--ink);background:#fff;border:1px solid #dce6f0;border-radius:14px;grid-template-columns:minmax(0,1fr) 158px;display:grid;position:absolute;top:calc(100% + 8px);left:0;overflow:hidden;box-shadow:0 18px 50px #122f5233}.calendar-panel{border-right:1px solid #e9eff5;padding:16px 18px 13px}.picker-header{justify-content:space-between;align-items:center;min-height:34px;display:flex}.picker-header>strong{font-size:14px}.picker-header>div{gap:4px;display:flex}.picker-header button{color:#64748a;background:0 0;border:1px solid #0000;border-radius:8px;place-items:center;width:30px;min-height:30px;display:grid}.picker-header button:hover{color:var(--blue-700);background:#eff5fb;border-color:#dce8f3}.calendar-weekdays,.calendar-grid{text-align:center;grid-template-columns:repeat(7,1fr);display:grid}.calendar-weekdays{color:#8490a0;margin-top:8px;font-size:10px;font-weight:600}.calendar-weekdays span{padding:6px 0}.calendar-grid{gap:2px 0}.calendar-grid button{color:#35455c;font-variant-numeric:tabular-nums;background:0 0;border:1px solid #0000;border-radius:9px;justify-self:center;width:32px;min-height:32px;font-size:11px;position:relative}.calendar-grid button:hover{color:var(--blue-700);background:#edf5fd}.calendar-grid button.outside{color:#b6c0cc}.calendar-grid button.today{color:var(--blue-700);border-color:#9bc7ed;font-weight:700}.calendar-grid button.selected{color:#fff;background:var(--blue-600);border-color:var(--blue-600);font-weight:700;box-shadow:0 4px 10px #277ed03d}.time-panel{background:#f8fafc;min-width:0;padding:16px 12px 13px}.time-heading span{align-items:center;gap:6px;display:flex}.time-heading svg{color:var(--blue-600)}.time-heading strong{font-size:12px}.time-heading small{color:#98a3b1;font-size:8px}.time-column-headings{color:#8b97a7;text-align:center;grid-template-columns:repeat(2,1fr);gap:7px;margin:9px 0 5px;font-size:9px;display:grid}.time-columns{grid-template-columns:repeat(2,1fr);gap:7px;height:198px;display:grid}.time-list{scrollbar-width:thin;scrollbar-color:#c7d5e3 transparent;background:#fff;border:1px solid #e5ecf3;border-radius:9px;padding:2px;overflow-y:auto}.time-list button{color:#536174;font-variant-numeric:tabular-nums;background:0 0;border-radius:7px;width:100%;min-height:30px;font-size:10px}.time-list button:hover{color:var(--blue-700);background:#eff6fc}.time-list button.selected{color:#fff;background:var(--blue-600);font-weight:700}.picker-footer{background:#fff;border-top:1px solid #e9eff5;grid-column:1/-1;grid-template-columns:80px 1fr 80px;align-items:center;gap:8px;min-height:53px;padding:9px 13px;display:grid}.picker-footer>span{color:#778599;text-align:center;font-variant-numeric:tabular-nums;font-size:10px}.picker-today,.picker-done{border-radius:8px;min-height:34px;padding:0 12px;font-size:11px;font-weight:600}.picker-today{color:var(--blue-700);background:#eef5fc}.picker-today:hover{background:#e1eef9}.picker-done{color:#fff;background:var(--blue-600)}.picker-done:hover{background:var(--blue-700)}.status-select{min-width:0;position:relative}.status-select-trigger{gap:7px}.status-select-trigger>span:nth-child(2){flex:1;font-size:11px;font-weight:600}.status-option-icon{color:#65768b;background:#edf2f7;border-radius:7px;flex:none;place-items:center;width:26px;height:26px;display:grid}.status-option-icon.progress{color:#a06a08;background:#fff4d5}.status-option-icon.submitted{color:#187552;background:#e5f6ef}.status-option-icon.timeout{color:#a03d52;background:#fde9ee}.status-select-menu{z-index:30;background:#fff;border:1px solid #dce6f0;border-radius:11px;width:100%;min-width:170px;padding:6px;position:absolute;top:calc(100% + 7px);left:0;box-shadow:0 14px 38px #122f522e}.status-select-option{color:#43536a;text-align:left;background:0 0;border-radius:8px;align-items:center;gap:9px;width:100%;min-height:42px;padding:5px 8px;display:flex}.status-select-option:hover{color:var(--blue-700);background:#f1f6fb}.status-select-option.selected{color:var(--blue-700);background:#edf5fc;font-weight:700}.status-select-option>span:nth-child(2){flex:1;font-size:11px}.status-option-check{color:var(--blue-600);flex:none}.table-wrap{width:100%;overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:12px}th{color:#6c7889;text-align:left;white-space:nowrap;letter-spacing:.05em;background:#f7f9fc;padding:11px 13px;font-size:10px;font-weight:700}td{color:#536174;white-space:nowrap;border-top:1px solid #edf1f5;padding:13px}td:first-child{min-width:120px}td:first-child strong,td:first-child span{display:block}td:first-child strong{color:var(--ink);font-size:13px}td:first-child span{color:#8995a5;margin-top:2px;font-size:10px}.score-cell{color:var(--blue-700);font-size:15px;font-weight:700}.status-badge{border-radius:999px;padding:4px 8px;font-size:10px;font-weight:700;display:inline-flex}.status-badge.in_progress{color:#946310;background:#fff6dd}.status-badge.submitted{color:#187552;background:#e7f7f0}.status-badge.timed_out{color:#9e3d50;background:#fdebf0}.empty-cell{text-align:center;color:#8b97a7;height:160px}.pagination{min-height:58px;color:var(--muted);border-top:1px solid #edf1f5;justify-content:space-between;align-items:center;padding:10px 18px;font-size:11px;display:flex}.pagination>div{align-items:center;gap:8px;display:flex}.pagination button{min-height:31px;padding:0 10px;font-size:10px}.admin-login-card{max-width:420px}.stack-form{flex-direction:column;gap:12px;margin-top:26px;display:flex}.field-with-icon{color:#708097;align-items:center;gap:8px;display:flex}.field-with-icon input{flex:1;min-width:0}.stack-form .primary-action{margin-top:4px}.detail-loading{text-align:center;min-height:100svh;color:var(--muted);place-content:center;gap:12px;display:grid}.detail-loading h1{color:var(--ink)}.detail-loading a{color:var(--blue-700)}.detail-container{width:min(100% - 36px,1060px);margin:0 auto;padding:28px 0 50px}.detail-summary{background:#dfe8f1;border:1px solid #dfe8f1;border-radius:14px;grid-template-columns:1fr 1fr 1.35fr 1.35fr 1fr;gap:1px;display:grid;overflow:hidden;box-shadow:0 7px 22px #1c3f640f}.detail-summary>div{background:#fff;flex-direction:column;justify-content:center;gap:7px;min-height:92px;padding:15px;display:flex}.detail-summary span{color:var(--muted);font-size:10px}.detail-summary strong{color:var(--ink);font-size:15px}.detail-summary .small-value{font-size:11px;line-height:1.55}.detail-summary .summary-score{color:#fff;background:var(--blue-700)}.detail-summary .summary-score span{color:#ffffffad}.detail-summary .summary-score strong{color:#fff;font-size:29px}.detail-summary small{opacity:.7;margin-left:3px;font-size:11px;font-weight:400}.detail-score-line{color:#4e6179;background:#e8eef5;border-radius:9px;gap:24px;margin:16px 0 22px;padding:11px 16px;font-size:11px;display:flex}.answer-detail-list{gap:14px;display:grid}.answer-detail-card{background:#fff;border:1px solid #e1e9f1;border-radius:14px;padding:22px;box-shadow:0 6px 18px #1d41690a}.answer-detail-card>header{justify-content:space-between;gap:14px;display:flex}.answer-detail-card>header>div{color:var(--muted);align-items:center;gap:9px;font-size:10px;display:flex}.question-number{color:#fff;background:var(--blue-700);border-radius:8px;place-items:center;width:29px;height:29px;font-size:12px;font-weight:700;display:grid}.result-mark{border-radius:999px;align-items:center;gap:4px;padding:5px 8px;font-size:10px;font-weight:700;display:inline-flex}.result-mark.correct{color:#187552;background:#e7f7f0}.result-mark.wrong{color:#a03d52;background:#fdebf0}.answer-detail-card h2{margin:18px 0;font-size:16px;line-height:1.65}.detail-options{grid-template-columns:repeat(2,1fr);gap:8px;display:grid}.detail-options>div{background:#f7f9fc;border:1px solid #e4ebf2;border-radius:8px;align-items:center;gap:9px;min-height:43px;padding:9px 11px;font-size:11px;display:flex}.detail-options strong{color:#4b6581;background:#e7edf4;border-radius:6px;place-items:center;width:23px;height:23px;display:grid}.detail-options span{flex:1}.detail-options em{color:#728094;font-size:9px;font-style:normal}.detail-options .right-answer{background:#edf9f4;border-color:#94d6bf}.detail-options .right-answer strong{color:#fff;background:var(--success)}.detail-options .student-wrong{background:#fff1f4;border-color:#efb4bf}.detail-options .student-wrong strong{color:#fff;background:var(--danger)}.answer-detail-card>footer{color:#67768a;background:#f4f7fa;border-radius:8px;align-items:flex-start;gap:7px;margin-top:15px;padding:12px;font-size:11px;line-height:1.65;display:flex}.answer-detail-card>footer svg{color:var(--blue-600);flex:none;margin-top:1px}.answer-detail-card>footer strong{color:#41546c;white-space:nowrap}@media (max-width:980px){.exam-workspace{grid-template-columns:1fr}.question-navigator{position:static}.question-number-grid{grid-template-columns:repeat(10,1fr)}}@media (max-width:900px){.admin-grid{grid-template-columns:1fr}.detail-summary{grid-template-columns:repeat(2,1fr)}.detail-summary .summary-score{grid-column:span 2}}@media (max-width:680px){.login-page{padding:18px}.login-card{width:min(100%,340px);min-height:auto;padding:34px 24px 30px}.app-page{padding:18px 13px}.content-card{border-radius:16px;padding:28px 20px}.rule-grid{grid-template-columns:1fr}.rule-grid article{min-height:100px}.exam-header{flex-direction:column;align-items:stretch;padding:16px}.exam-timer{min-width:0}.exam-progress-row{grid-template-columns:1fr auto}.exam-progress-row .progress-track{grid-area:2/span 2}.question-navigator{padding:16px}.question-state-legend{justify-content:flex-start;gap:15px}.question-number-grid{grid-template-columns:repeat(6,1fr)}.question-navigator>p{display:none}.question-card{min-height:0;padding:24px 17px 20px}.question-card h1{margin:16px 0 20px}.option-item{min-height:55px;padding:10px 12px}.question-actions{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#fffffff0;margin:0 -7px -8px;padding:13px 7px 8px;position:sticky;bottom:8px}.question-actions button{flex:1}.admin-topbar{height:64px;padding:0 16px}.admin-topbar>div>div span{display:none}.admin-container{width:min(100% - 24px,1240px);padding-top:22px}.admin-hero{flex-direction:column;align-items:flex-start}.admin-hero .primary-action{width:100%}.stats-grid{grid-template-columns:1fr;gap:9px}.stats-grid article{min-height:72px}.filter-row{grid-template-columns:1fr}.datetime-popover{grid-template-columns:1fr;width:auto;max-height:calc(100svh - 24px);position:fixed;top:50%;left:12px;right:12px;overflow-y:auto;transform:translateY(-50%)}.calendar-panel{border-right:0}.time-panel{border-top:1px solid #e9eff5}.time-heading{min-height:30px}.time-columns{height:150px}.picker-footer{position:sticky;bottom:0}.detail-container{width:min(100% - 24px,1060px)}.detail-summary{grid-template-columns:1fr}.detail-summary .summary-score{grid-column:auto}.detail-score-line{flex-direction:column;gap:5px}.answer-detail-card>header{flex-direction:column}.result-mark{align-self:flex-start}.detail-options{grid-template-columns:1fr}.dialog-actions{flex-direction:column-reverse}.dialog-actions button{width:100%}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}