:root{--ink:#153254;--muted:#647f9e;--line:#dce7f4;--blue:#1974dc;--light:#eaf3ff;--shadow:0 10px 30px #1b539115;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink)}
*{box-sizing:border-box}body{margin:0;background:linear-gradient(160deg,#eaf2fc,#f6faff 55%,#edf5ff)}button,input,select{font:inherit}button{cursor:pointer}.hidden{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.btn{padding:11px 16px;border-radius:12px;border:1px solid #c0d8f2;background:white;color:#1360b7;font-weight:750;display:inline-flex;align-items:center;justify-content:center;gap:10px;text-decoration:none}
.btn-main{background:linear-gradient(105deg,#258afa,#166dce);color:white;border:0;box-shadow:0 8px 20px #1e7dd82a}
.btn-main:disabled{background:#a8bfd7;box-shadow:none;cursor:not-allowed}
.btn-outline{background:#f8fbff;border-color:#bbd7f8}.btn-text{border:0;background:transparent;color:#0a61bd;box-shadow:none}
input,select{width:100%;min-height:48px;border:1px solid #bbd1e9;border-radius:11px;padding:11px 14px;color:#173354;background:#fff;outline:0}
input:focus,select:focus{border-color:#318bef;box-shadow:0 0 0 3px #318bef20}
label{display:block;font-size:14px;font-weight:730;line-height:1.4}
label input,label select{margin-top:8px;font-weight:400;font-size:15px}
label small{display:block;color:#7b92ab;font-weight:400;margin-top:6px}
.entry{min-height:100vh;padding:30px;display:grid;place-items:center}
.entry-frame{max-width:1010px;width:100%;display:grid;grid-template-columns:1fr 1fr;overflow:hidden;border:1px solid #dbe7f4;border-radius:28px;background:white;box-shadow:0 15px 55px #0d4d9620}
.entry-brand{background:linear-gradient(150deg,#207de5,#084792);color:white;padding:42px 38px;min-height:500px;position:relative;overflow:hidden}
.entry-symbol{width:77px;height:77px;border-radius:22px;background:#ffffff26;font-size:45px;display:grid;place-items:center}
.entry-brand h1{font-size:54px;letter-spacing:-2px;margin:22px 0 8px;line-height:1.1}
.entry-brand p{font-size:20px;line-height:1.48;color:#edf5ff;max-width:400px}
.entry-highlights{margin-top:35px;display:grid;gap:13px;font-size:16px;font-weight:650}
.brand-watermark{font-size:95px;position:absolute;bottom:-30px;right:15px;color:#ffffff15;font-weight:900;white-space:nowrap}
.entry-auth{padding:45px 38px;display:flex;flex-direction:column;justify-content:center}
.tiny-caption{font-size:13px;letter-spacing:1.1px;font-weight:850;color:#2375ca}
.entry-auth h2{font-size:34px;margin:9px 0}
.entry-auth p{color:var(--muted);line-height:1.5}
.form-stack{display:grid;gap:16px}.form-stack .btn-main{font-size:17px;padding:15px}
.message{padding:13px;border-radius:12px;margin:15px 0;background:#eff7ff;border:1px solid #d3e7fa;font-size:14px}
.message.error{background:#fff0ef;border-color:#f0cac6;color:#9b3026}
.auth-footer{margin-top:22px;border-top:1px solid var(--line);padding-top:17px;color:#778ba3;font-size:12px;line-height:1.4}
#guestBox p{background:#eff7ff;border-radius:12px;padding:13px;color:#31597f}#guestBox .btn{width:100%}
.topline{background:white;border-bottom:1px solid #e1eaf5}.container{max-width:1330px;margin:0 auto;padding:0 20px}
.top-inner{height:65px;display:flex;align-items:center;justify-content:space-between}.top-product{font-size:20px;font-weight:900;color:#0c50a3}.top-product span{color:#64a3e7}.top-user{display:flex;align-items:center;gap:13px;font-weight:650;font-size:14px}
.hero{margin:22px 0 17px;padding:24px 28px;border:1px solid #dceaf8;border-radius:22px;background:linear-gradient(110deg,#fff,#e8f3ff);display:flex;align-items:center;gap:21px;box-shadow:var(--shadow)}
.hero-icon{width:82px;height:82px;border-radius:19px;background:linear-gradient(150deg,#4c9aff,#166bc9);display:grid;place-items:center;color:white;font-size:46px;box-shadow:0 10px 20px #2377d52c}
.hero h1{font-size:42px;color:#0d519f;line-height:1.1;margin:0}.hero p{font-size:16px;margin:10px 0 0;color:#536f8e}
.hero-right{margin-left:auto;display:flex;align-items:center;gap:13px;color:#1c6cce}.hero-right span{background:white;padding:20px;border-radius:15px;box-shadow:var(--shadow);font-size:29px;font-weight:950}.hero-right span:nth-of-type(2){color:#159568}.hero-right b{background:#2586e8;color:white;padding:14px 10px;border-radius:12px}
.notice{display:flex;gap:12px;align-items:center;background:#fff7e8;color:#91580a;border:1px solid #f6e1ba;border-radius:13px;padding:13px 16px;margin-bottom:17px;font-size:14px}
.notice>span{font-weight:900;font-size:22px}.columns{display:grid;grid-template-columns:minmax(0,1.9fr) minmax(300px,1fr);gap:17px;align-items:start}
.paper{background:white;border:1px solid #e4ebf4;border-radius:20px;box-shadow:var(--shadow)}.main-paper{padding:24px 25px}
.section-title{display:flex;align-items:flex-start;gap:14px}.number{display:grid;place-items:center;background:#2988ee;color:white;font-size:25px;font-weight:850;border-radius:50%;width:42px;height:42px;flex:none}
.section-title h2{font-size:23px;margin:0}.section-title p{font-size:14px;color:var(--muted);margin:3px 0 15px}
.upload-area{display:flex;align-items:center;gap:16px;border:2px dashed #bfd9fa;background:#f8fbff;border-radius:16px;padding:17px;min-height:94px}
.upload-file-icon{width:55px;height:58px;flex:none;background:#e5f0ff;color:#2679dc;border-radius:11px;display:grid;place-items:center;font-size:30px;font-weight:900}
.upload-info{min-width:0;flex:1;display:grid;gap:4px}.upload-info strong{font-size:17px;overflow-wrap:anywhere}.upload-info small{color:var(--muted)}.choose-file{white-space:nowrap}
.line{height:1px;background:#e4ecf5;margin:22px 0}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px 18px}.mix-btn{width:100%;display:flex;justify-content:space-between;font-size:19px;margin-top:24px;padding:17px}
.status{display:flex;gap:13px;align-items:center;border-radius:14px;padding:16px;margin-top:15px;background:#e9f5ff;border:1px solid #d5e8fb}
.status>span{width:41px;height:41px;flex:none;border-radius:50%;background:#318cec;display:grid;place-items:center;color:white;font-weight:900;font-size:22px}.status strong{color:#164f88}
.status p{margin:4px 0 0;white-space:pre-wrap;font-size:14px;color:#436781}
.status.success{background:#e7f7ee;border-color:#c7e8d4}.status.success>span{background:#21a061}.status.success strong{color:#197446}
.status.error{background:#fff1ef;border-color:#f2c9c5}.status.error>span{background:#c74434}.status.error strong{color:#a42e22}
.sidebar{display:grid;gap:16px}.sidebar-card{overflow:hidden}.side-header{margin:0;padding:15px 18px;font-size:18px}.side-header.blue{background:#eaf4ff;color:#0c5eb5}.side-header.amber{background:#fff8e7;color:#9b5a08}.side-header.green{background:#eaf8f0;color:#176f43}
.steps{padding:10px 20px 18px;display:grid;gap:12px}.steps>div{display:grid;grid-template-columns:40px 1fr;gap:4px 12px;align-items:center}.steps i{grid-row:span 2;width:36px;height:36px;border-radius:50%;background:#e5f2ff;color:#227cd7;display:grid;place-items:center;font-style:normal;font-weight:900}.steps strong{font-size:15px}.steps span{font-size:13px;color:#7087a2}
.sidebar ul{padding:4px 22px 14px 39px;color:#4b6886;line-height:1.6;font-size:14px}.sidebar li{margin:8px 0}
.summary-row{display:flex;justify-content:space-between;padding:14px 17px;border-bottom:1px solid #e7eef5;font-size:14px;gap:10px}.summary-row:last-child{border:0}.summary-row span{color:#64809c}.summary-row strong{text-align:right}.result-pill{border-radius:999px;background:#e4f3ff;color:#195fae;padding:5px 10px}
footer{font-size:12px;color:#7990a7;text-align:center;padding:24px}
@media(max-width:1050px){.columns{grid-template-columns:1fr}.hero-right{display:none}}
@media(max-width:720px){.entry{padding:12px}.entry-frame{grid-template-columns:1fr}.entry-brand{min-height:auto;padding:26px}.entry-brand h1{font-size:38px}.entry-brand p{font-size:15px}.entry-highlights{gap:7px;margin-top:14px;font-size:14px}.entry-auth{padding:25px}.container{padding:0 12px}.hero{padding:16px}.hero h1{font-size:30px}.hero-icon{width:58px;height:58px;font-size:29px}.main-paper{padding:17px}.form-grid{grid-template-columns:1fr}.upload-area{flex-wrap:wrap}.choose-file{width:100%}.top-product{font-size:16px}.top-user{font-size:12px}.topbar{display:none}.top-inner{height:65px}}


/* 2026 DTMIX responsive exam editor and structured review */
:root{--ink:#183654;--muted:#68829c}
.hero{padding:17px 23px;margin:17px 0 14px}
.hero-icon{width:58px;height:58px;font-size:30px}
.hero h1{font-size:28px;letter-spacing:-.02em}
.hero p{font-size:14px;margin-top:5px}
.hero-right span{font-size:22px;padding:12px}
.hero-right b{font-size:12px;padding:10px}
.section-title h2{font-size:19px}
.section-title p{font-size:13px}
.main-paper{padding:20px}
.number{width:38px;height:38px;font-size:20px}
.form-grid{gap:15px 17px}
input,select{min-height:43px;padding:9px 12px;font-size:14px}
label{font-size:13px}
label small{font-size:12px}
.top-product{font-size:18px}
.top-user{gap:8px}
.top-user .btn{padding:8px 11px;font-size:12px}
.code-settings{border:1px solid #d5e5f8;border-radius:14px;padding:11px;background:#f8fbff}
.label-title{font-size:13px;font-weight:750;margin-bottom:8px}
.mode-tabs{display:flex;background:#ebf4ff;border-radius:10px;padding:3px;gap:4px;margin-bottom:9px}
.mode-tab{border:0;flex:1;padding:8px 10px;font-size:13px;font-weight:750;color:#1d65b5;background:transparent;border-radius:8px;cursor:pointer}
.mode-tab.active{background:#1c76dd;color:#fff;box-shadow:0 3px 7px #0b60b82a}
.code-inputs{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.code-preview{margin-top:8px;background:#eff7ff;border:1px dashed #aed5fa;border-radius:8px;padding:8px 10px}
.code-preview small{font-size:11px;color:#6382a1}
.code-preview div{margin-top:4px;font-size:12px;font-weight:700;line-height:1.45;color:#1763b1;overflow-wrap:anywhere}
.action-bar{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:19px}
.action-bar .btn{min-height:53px}
.action-bar .mix-btn{margin:0;padding:13px 12px;font-size:15px;gap:6px}
.action-bar .analyze-btn{background:#f0f7ff;font-size:14px;border:1px solid #8fbbec}
.action-bar .mix-btn strong{font-weight:800}
.preview-panel{border-top:1px solid #dce9f8;margin-top:24px;padding-top:20px}
.preview-heading{display:flex;align-items:start;justify-content:space-between;gap:12px;margin-bottom:14px}
.preview-heading h2{margin:0;font-size:20px;color:#1559ad}
.preview-heading p{margin:6px 0 0;font-size:13px;color:var(--muted);line-height:1.5}
.preview-count{display:inline-block;background:#e5f2ff;color:#1465b9;font-weight:800;border-radius:20px;padding:7px 13px;font-size:12px;white-space:nowrap}
.preview-tools{display:grid;grid-template-columns:1fr 1fr;gap:10px;background:#f7faff;border:1px solid #e1edfa;border-radius:13px;padding:11px}
.preview-tools label{font-size:12px}
.preview-tools select,.preview-tools input{margin-top:5px}
.preview-legend{display:flex;flex-wrap:wrap;gap:8px 17px;margin:13px 0 15px;color:#657e96;font-size:12px}
.preview-questions{display:grid;gap:12px}
.preview-q{border:1px solid #dbe8f5;border-radius:13px;padding:13px 15px;background:#fff}
.preview-q-header{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:8px}
.preview-q-header strong{font-size:14px;color:#115ab1}
.preview-tag{font-size:11px;border-radius:50px;padding:4px 8px;background:#eaf4ff;color:#2368ae}
.preview-q-stem{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.6;font-size:14px;color:#213c59}
.preview-cluster{border-left:3px solid #3a97e7;padding:8px 10px;margin-bottom:9px;background:#f0f7ff;white-space:pre-wrap;font-size:13px}
.preview-option{display:flex;gap:9px;padding:9px 10px;border:1px solid #ebf0f5;border-radius:8px;margin-top:7px;font-size:13px}
.preview-option .opt-label{width:21px;flex:none;font-weight:850}
.preview-option .opt-text{white-space:pre-wrap;overflow-wrap:anywhere}
.preview-option.correct{background:#e7f7ed;border-color:#b3dfc5;color:#13683d}
.preview-option.false-known{background:#f9fbfd}
.answer-summary{font-size:12px;margin-top:9px;padding:8px 10px;background:#f7fbff;border-radius:8px;color:#346184}
.answer-summary.missing{background:#fff5e6;color:#925e1d}
.preview-alerts{border:1px solid #f0d4a6;background:#fff9eb;color:#8e5d1b;padding:10px 12px;border-radius:10px;font-size:12px;line-height:1.6;margin-bottom:12px}
.preview-pagination{display:flex;align-items:center;justify-content:space-between;margin-top:12px;gap:10px;color:#637f99;font-size:12px}
.preview-pagination>div{display:flex;gap:7px}
.preview-pagination .btn{padding:7px 10px;font-size:12px}
.help-panel{padding:14px 18px;margin-bottom:14px;font-size:13px;line-height:1.6}
.help-panel h3{margin:0 0 7px}
.admin-panel{padding:20px;margin-top:16px}
.admin-table{width:100%;border-collapse:collapse;font-size:13px}
.admin-table th,.admin-table td{text-align:left;border-bottom:1px solid #e5ecf4;padding:9px;overflow-wrap:anywhere}
.admin-table th{background:#f3f8ff}
.admin-table button{font-size:12px;padding:6px 9px}
.admin-table select{min-height:36px;max-width:150px}
.admin-scroll{overflow-x:auto}
.admin-setup{background:#fff9e8;border:1px solid #efdfb5;border-radius:10px;padding:13px;font-size:13px}
.admin-setup button{margin-top:9px}
@media(max-width:900px){.action-bar{grid-template-columns:1fr}}
@media(max-width:720px){.hero{padding:13px}.hero h1{font-size:24px}.hero-icon{width:48px;height:48px;font-size:26px}.topline{display:block}.top-inner{height:auto;min-height:60px;gap:7px;flex-wrap:wrap;padding-block:8px}.top-user{flex-wrap:wrap}.top-user .btn{font-size:11px}.preview-tools{grid-template-columns:1fr}.preview-heading{flex-wrap:wrap}.preview-pagination{flex-wrap:wrap}}

/* Compact workspace after removing the oversized heading and advisory banner. */
#workspace > main.container{padding-top:18px}

/* Answer audit in the recognized exam review */
.audit-panel{margin:17px 0;padding:14px 15px;border:1px solid #d7e6f6;border-radius:13px;background:#f9fcff}
.audit-top{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.audit-top h3{margin:0;font-size:16px;color:#1c527f}
.audit-top>span{color:#527393;font-size:12px;font-weight:650;line-height:1.5}
.audit-parts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.audit-card{background:#fff;border:1px solid #d9e8f4;border-radius:11px;padding:11px 12px}
.audit-card.incomplete{border-color:#edcda0;background:#fffaf2}
.audit-title{display:flex;align-items:center;justify-content:space-between;gap:7px;margin-bottom:9px}
.audit-title>strong{color:#1b609f;font-size:14px}
.audit-badge{border-radius:999px;background:#e6f6ea;color:#1b7445;font-weight:750;font-size:10px;padding:4px 7px}
.audit-badge.attention{background:#fff0d8;color:#a46518}
.audit-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}
.audit-stat{display:grid;gap:3px;min-width:0}
.audit-stat>span{font-size:11px;color:#6b85a0}
.audit-stat>strong{font-size:18px;color:#143c65}
.audit-stat:nth-child(2)>strong{color:#147749}
.audit-stat:nth-child(3)>strong{color:#b2711b}
@media(max-width:760px){.audit-parts{grid-template-columns:1fr}.audit-top>span{font-size:11px}}