:root{--bg:#f4f1e8;--surface:#fffdf8;--surface2:#eee9db;--ink:#172019;--muted:#67736b;--line:#ddd6c5;--green:#1f513d;--green2:#14382b;--soft:#e5f0e8;--gold:#a56a1b;--danger:#a32f3e;--danger-soft:#f9e6e9;--warn:#8a5e0b;--warn-soft:#fff0c9;--info:#2e637e;--info-soft:#e4f1f7;--shadow:0 18px 50px rgba(28,45,36,.08);--display:Georgia,"Times New Roman",serif;--sans:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 var(--sans)}a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{opacity:.55;cursor:not-allowed}h1,h2,h3,h4{font-family:var(--display);letter-spacing:-.03em;line-height:1.08;margin:0}.wrap{width:min(1180px,calc(100% - 2rem));margin:0 auto}.top{position:sticky;top:0;z-index:60;background:rgba(255,253,248,.9);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.topbar{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:1rem}.brand{display:flex;align-items:center;gap:.65rem;font:700 1.12rem var(--display)}.mark{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:var(--green);color:#fff;font:900 .76rem var(--sans)}.public-nav{display:flex;align-items:center;gap:.25rem}.public-nav>a{padding:.6rem .7rem;border-radius:10px;color:#526057}.public-nav>a:hover{background:var(--surface2);color:var(--ink)}.nav-cta{background:var(--green)!important;color:#fff!important}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;min-height:42px;padding:.7rem 1rem;border:1px solid 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1rem}.placeholder-cover{display:grid;place-items:center;background:linear-gradient(135deg,#d8e5de,#d4d0bf);color:var(--green);font-weight:800}.lead{font-size:1.05rem;line-height:1.75;color:#4b5850}.muted{color:var(--muted)}.subtitle{max-width:800px;color:var(--muted);margin:.5rem 0 0}.page-header{display:flex;justify-content:space-between;align-items:flex-end;gap:1rem;margin-bottom:1.45rem}.actions{display:flex;align-items:center;gap:.55rem;flex-wrap:wrap}.text-link{color:var(--green);font-weight:850}.back{display:inline-block;margin-bottom:1rem;color:var(--muted)}.clamp{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.chips{display:flex;gap:.45rem;flex-wrap:wrap}.badge{display:inline-flex;align-items:center;min-height:25px;padding:.18rem .55rem;border-radius:999px;background:var(--surface2);border:1px solid 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var(--line);border-radius:12px;margin:.7rem 0}.alert.danger{background:var(--danger-soft);border-color:#efbac2;color:#8b2634}.alert.success{background:#e7f4eb;border-color:#c6dec9;color:#275e3c}.security-list{display:grid;gap:.6rem}.security-list span{padding:.65rem .75rem;border-radius:11px;background:var(--surface2)}.contact{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}.contact>div{display:grid;gap:.25rem}.footer{min-height:75px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:.85rem}.app-shell{min-height:100vh;display:grid;grid-template-columns:275px 1fr}.sidebar{position:sticky;top:0;height:100vh;overflow:auto;background:#14271f;color:#dce8e0;padding:1rem;display:flex;flex-direction:column;gap:.7rem;z-index:80}.sidebar .brand{color:#fff;font-size:1rem}.sidebar-brand{padding:.4rem .25rem 1rem;border-bottom:1px solid 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1.1rem;display:flex;align-items:center;gap:.8rem}.top-inner small{display:block;color:var(--muted)}.top-inner strong{display:block}.top-user{margin-left:auto;color:var(--muted);font-size:.84rem}.content-wrap{padding:1.4rem;max-width:1450px}.quick-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.6rem}.quick{padding:.8rem;border:1px solid var(--line);background:var(--surface2);border-radius:13px;font-weight:800}.quick small{display:block;color:var(--muted);font-weight:500}.list-row{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:.8rem 0;border-top:1px solid var(--line)}.list-row:first-child{border-top:0}.list-row small{display:block;color:var(--muted)}.inset{padding:.8rem;background:var(--surface2);border-radius:13px;display:flex;gap:.7rem;flex-wrap:wrap;align-items:center;margin:.9rem 0}.detail-grid-small{display:grid;grid-template-columns:1fr 1fr;gap:.55rem 1rem}.detail-grid-small span{font-size:.78rem;color:var(--muted)}.detail-grid-small strong{font-size:.92rem}.table-wrap{overflow:auto}.table-wrap table{width:100%;border-collapse:collapse;min-width:700px}.table-wrap th,.table-wrap td{padding:.75rem;border-top:1px solid var(--line);vertical-align:top;text-align:left}.table-wrap th{font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.empty{padding:2rem;text-align:center;color:var(--muted)}.loading{min-height:160px;display:grid;place-items:center;color:var(--muted)}.spinner{width:20px;height:20px;border-radius:50%;border:2px solid #c8d1ca;border-top-color:var(--green);animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.video-placeholder{min-height:350px;border-radius:16px;background:linear-gradient(135deg,#122d23,#2a5c46);color:white;display:grid;place-items:center;align-content:center;gap:.45rem;text-align:center;padding:2rem}.video-placeholder small{max-width:420px;color:#cbdcd3}.player{width:100%;max-height:70vh;border-radius:15px;background:#0b100d}.question-image{display:block;max-width:100%;max-height:360px;object-fit:contain;border-radius:12px;border:1px solid var(--line);background:#fff}.exam-page{max-width:1350px;margin:0 auto}.exam-head{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:1rem}.timer{display:grid;gap:.15rem;padding:.65rem .8rem;border-radius:14px;background:#edf5ef;border:1px solid #c8dacd;font:800 1.65rem var(--display);color:var(--green)}.timer small{font:600 .7rem var(--sans);color:var(--muted)}.exam-grid{display:grid;grid-template-columns:minmax(0,1fr) 315px;gap:1rem}.question-text{font-size:1.2rem;line-height:1.75;margin:1rem 0}.options{display:grid;gap:.7rem}.option{display:grid;grid-template-columns:42px 1fr;gap:.8rem;align-items:start;text-align:left;padding:.9rem;border:1px solid var(--line);border-radius:14px;background:#fbf9f1}.option:hover,.option.selected{background:var(--soft);border-color:#89aa99}.option>span{display:grid;place-items:center;width:31px;height:31px;border-radius:9px;background:#fff;border:1px solid var(--line);font-weight:900}.option.selected>span{background:var(--green);color:#fff;border-color:var(--green)}.paper-actions{display:flex;align-items:center;gap:.55rem;flex-wrap:wrap;padding-top:1rem;margin-top:1rem;border-top:1px solid var(--line)}.palette{display:grid;grid-template-columns:repeat(5,1fr);gap:.45rem}.palette-btn{aspect-ratio:1;border:1px solid var(--line);background:#faf8f2;border-radius:9px;font-weight:850}.palette-btn.current{outline:3px solid #b9ccbf}.palette-btn.answered{background:#e5f2e9;border-color:#bedec6}.palette-btn.marked{box-shadow:inset 0 -5px 0 var(--gold)}.legend{display:grid;gap:.35rem;color:var(--muted);font-size:.72rem;margin:.8rem 0}.wide-cell{min-width:300px}.code{white-space:pre-wrap;word-break:break-word;max-height:520px;overflow:auto;background:#17241e;color:#dce7e0;border-radius:14px;padding:1rem;font:12px/1.6 ui-monospace,SFMono-Regular,Menlo,monospace}.pick{display:grid;grid-template-columns:22px 1fr;gap:.55rem;padding:.65rem;border:1px solid var(--line);background:#fbf8ef;border-radius:11px}.pick input{width:auto;margin-top:.25rem}.scroll-list{max-height:620px;overflow:auto;display:grid;gap:.45rem}.switch{min-width:58px;padding:.42rem .7rem;border:1px solid rgba(255,255,255,.12);border-radius:999px;background:#273e33;color:#c1d0c6;font-weight:900}.switch.on{background:#2d7655;color:white}.modal-backdrop{position:fixed;inset:0;background:rgba(10,19,14,.45);z-index:200;display:flex;justify-content:flex-end}.modal{width:min(620px,96vw);height:100%;background:var(--surface);padding:1rem;overflow:auto;box-shadow:-20px 0 70px rgba(0,0,0,.18)}.modal-head{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1rem}.modal-actions{display:flex;gap:.55rem;justify-content:flex-end;margin-top:.5rem}.boot{min-height:100vh;display:grid;place-items:center;align-content:center;gap:.6rem;background:var(--bg)}
@media(max-width:1000px){.hero-grid,.grid.two,.exam-grid{grid-template-columns:1fr}.grid.three{grid-template-columns:repeat(2,1fr)}.stats{grid-template-columns:repeat(2,1fr)}.app-shell{grid-template-columns:230px 1fr}.contact{grid-template-columns:1fr}}
/* Tablets use a single-column CBT workspace to keep the question readable. */
@media(max-width:980px){.exam-grid{grid-template-columns:minmax(0,1fr)}.exam-side-panel{position:static}.exam-palette-scroll{max-height:260px}.exam-status-summary{grid-template-columns:repeat(3,minmax(0,1fr))}.exam-stat{align-items:center;flex-direction:column}.exam-stat span{font-size:.64rem;line-height:1.25;text-align:center}}
@media(max-width:760px){.public-nav{display:none}.mobile-menu,.app-menu{display:inline-flex}.topbar{min-height:66px}.hero-grid{padding:3rem 0}.grid.three,.form-grid.two{grid-template-columns:1fr}.app-shell{display:block}.sidebar{position:fixed;left:0;top:0;bottom:0;width:min(310px,88vw);height:auto;transform:translateX(-105%);transition:transform .18s ease;box-shadow:25px 0 60px rgba(0,0,0,.2)}.sidebar.open{transform:translateX(0)}.content-wrap{padding:1rem}.top-user{display:none}.page-header{align-items:flex-start;flex-direction:column}.stats{grid-template-columns:1fr 1fr}.exam-head{align-items:stretch;flex-direction:column}.timer{width:max-content}.footer{padding:1rem 0;align-items:flex-start;flex-direction:column}}
@media(max-width:460px){.stats{grid-template-columns:1fr}.palette{grid-template-columns:repeat(4,1fr)}.hero h1{font-size:2.8rem}}
.course-cover img{width:100%;height:100%;object-fit:cover;border-radius:14px;display:block}.small{font-size:.78rem}.narrow{max-width:900px}.row{display:flex;justify-content:space-between;align-items:center;gap:1rem}.stack{display:grid;gap:.8rem}.stack-lg{display:grid;gap:1.2rem}.spacer{flex:1}.full{width:100%}.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.7rem;margin-top:1rem}.metric-grid span{display:grid;gap:.1rem;padding:.8rem;border-radius:12px;background:rgba(255,255,255,.55)}.metric-grid strong{font:800 1.45rem var(--display);color:var(--green)}.metric-grid small{color:var(--muted)}.feature-icon{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--soft);color:var(--green);font-weight:900;margin-bottom:.7rem}.video-box{display:grid;gap:.8rem}.upload-label{position:relative;overflow:hidden}.upload-label input{position:absolute;inset:0;opacity:0;cursor:pointer}.toast{position:fixed;right:1rem;bottom:1rem;z-index:500;max-width:min(420px,calc(100vw - 2rem));padding:.85rem 1rem;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow)}
@media(max-width:760px){.row{align-items:stretch;flex-direction:column}.metric-grid{grid-template-columns:1fr}}

/* Structured bilingual educational content (Question Bank / CBT) */
.question-text{line-height:1.8;overflow-wrap:anywhere}
.question-rich{line-height:1.8;overflow-wrap:anywhere}
.question-rich p{margin:.25rem 0 .75rem}
.question-rich h3{font-size:1.08rem;margin:.7rem 0 .45rem}
.question-rich ul,.question-rich ol{padding-left:1.4rem;margin:.35rem 0 .75rem}
.question-rich li{margin:.2rem 0}
.content-language{display:block;min-width:0}
.content-language+.content-language{border-top:1px dashed var(--line);margin-top:.45rem;padding-top:.45rem}
.language-caption{display:block;margin-bottom:.2rem;color:var(--muted);font:800 .68rem/1.3 var(--sans);letter-spacing:.045em}
.option-copy{display:grid;gap:.35rem;min-width:0;text-align:left;line-height:1.55}
.option-copy .content-language+.content-language{margin-top:.2rem;padding-top:.2rem}
.rich-code,.rich-code-block{border-radius:8px;background:var(--surface2);padding:.5rem .65rem;white-space:pre-wrap;overflow-wrap:anywhere}
.rich-code-block{overflow:auto;margin:.5rem 0}
.math-inline{font-family:Georgia,serif;font-style:italic;overflow-wrap:anywhere}
.math-block{margin:.75rem 0;padding:.8rem;overflow:auto;text-align:center;background:var(--surface2);border-radius:10px;font-family:Georgia,serif;white-space:pre-wrap}
.rich-table-wrap{overflow:auto;max-width:100%;margin:.5rem 0}
.rich-table-wrap table{border-collapse:collapse;min-width:260px;width:100%}
.rich-table-wrap th,.rich-table-wrap td{border:1px solid var(--line);padding:.45rem .6rem;text-align:left}
.rich-table-wrap th{background:var(--surface2)}
@media(max-width:760px){.question-text{font-size:1rem}.option-copy{font-size:.93rem}.rich-table-wrap table{min-width:220px}}

/* Exam content: keep formulas legible and translations visually distinct without duplicating missing text. */
.exam-main .question-text{font-size:1.05rem;font-weight:600;line-height:1.85}
.exam-main .option{min-width:0}
.exam-main .option-copy{overflow-wrap:anywhere;word-break:normal}
.exam-main .option-copy .question-rich{min-width:0}
.exam-main .language-caption{letter-spacing:.025em}
.exam-main .math-inline,.exam-main .math-block{font-variant-numeric:lining-nums tabular-nums}
.exam-main .option:focus-visible,.exam-side .palette-btn:focus-visible{outline:3px solid #8ab7a1;outline-offset:2px}

/* Professional CBT question-palette status counts */
.exam-status-summary{display:grid;grid-template-columns:1fr;gap:.5rem;margin:.9rem 0;padding:.8rem;border:1px solid var(--line);border-radius:14px;background:var(--surface2)}
.exam-stat{display:flex;align-items:center;justify-content:space-between;gap:.8rem;padding:.48rem .6rem;border-radius:10px;background:var(--surface)}
.exam-stat span{font-size:.78rem;font-weight:750;color:var(--muted)}
.exam-stat strong{display:grid;place-items:center;min-width:30px;min-height:28px;padding:0 .5rem;border-radius:9px;font-size:.84rem;font-weight:900;font-variant-numeric:tabular-nums}
.exam-stat.answered strong{background:#e5f2e9;color:#245d3e}
.exam-stat.review strong{background:#fff0c5;color:#7c5600}
.exam-stat.unanswered strong{background:#f0eee7;color:#52574f}
.legend{gap:.5rem}
.legend>span{display:flex;align-items:center;gap:.45rem}
.legend-swatch{display:inline-block;width:11px;height:11px;border:1px solid var(--line);border-radius:4px;background:#faf8f2;flex:0 0 auto}
.legend-swatch.answered{background:#e5f2e9;border-color:#bedec6}
.legend-swatch.marked{background:#fff0c5;border-color:#e8cf85}
.legend-swatch.unanswered{background:#faf8f2}
.palette-btn.marked{background:#fff0c5;border-color:#e8cf85;box-shadow:inset 0 -3px 0 #d4a62b}
.palette-btn.answered.marked{background:linear-gradient(135deg,#e5f2e9 0 50%,#fff0c5 50% 100%);border-color:#c5c79b}
.btn.review-action{background:#fff0c5;border-color:#e8cf85;color:#715000;font-weight:850}
.btn.review-action:hover{background:#fbe7a5}
@media(min-width:900px){.exam-status-summary{gap:.35rem;padding:.65rem}}
@media(max-width:760px){.exam-grid{grid-template-columns:minmax(0,1fr)}.exam-side{order:-1}.exam-side .palette{grid-template-columns:repeat(8,minmax(0,1fr))}.exam-status-summary{grid-template-columns:repeat(3,minmax(0,1fr));gap:.35rem}.exam-stat{align-items:flex-start;flex-direction:column;gap:.35rem;padding:.45rem}.exam-stat span{font-size:.65rem;line-height:1.25}.exam-stat strong{min-width:25px;min-height:25px}.paper-actions .btn{flex:1;min-width:125px}}
@media(max-width:420px){.exam-side .palette{grid-template-columns:repeat(5,minmax(0,1fr))}.exam-status-summary{grid-template-columns:1fr}.exam-stat{align-items:center;flex-direction:row}}


/* ================================================================
   Science Point Assam — premium design system (release r3)
   Shared public/student/admin UI + focused government-exam CBT shell.
   ================================================================ */
:root{
  color-scheme:light;
  --bg:#f3f6fb;--surface:#ffffff;--surface2:#f4f7fb;--ink:#17263d;--muted:#607087;
  --line:#dbe3ee;--green:#08745f;--green2:#074d43;--soft:#e8f6f1;--gold:#9a650e;
  --danger:#b42332;--danger-soft:#fff0f0;--warn:#8f5a00;--warn-soft:#fff6df;--info:#175cd3;--info-soft:#eef4ff;
  --shadow:0 8px 26px rgba(20,42,75,.065);--display:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --sans:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --radius-lg:18px;--radius-md:12px;--focus:#84adff;
}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{background:var(--bg);color:var(--ink);font-size:14.5px;line-height:1.55;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
button,input,select,textarea{font:inherit}
button,a,input,select,textarea,summary{transition:background-color .16s ease,border-color .16s ease,box-shadow .16s ease,color .16s ease,transform .16s ease}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
::selection{background:#cdebe3;color:#073d35}
h1,h2,h3,h4{font-family:var(--sans);letter-spacing:-.035em;font-weight:780}
h1{font-size:clamp(1.8rem,3vw,2.35rem);line-height:1.12}
h2{font-size:1.35rem;line-height:1.2}
h3{font-size:1.04rem;line-height:1.3;letter-spacing:-.02em}
p{line-height:1.65}
.wrap{width:min(1240px,calc(100% - 2.5rem))}
.top{background:rgba(255,255,255,.94);border-bottom-color:#dce5ee;box-shadow:0 2px 10px rgba(15,35,65,.025)}
.topbar{min-height:72px}
.brand{font:780 1.02rem/1.15 var(--sans);letter-spacing:-.025em}
.mark{width:38px;height:38px;border-radius:12px;background:linear-gradient(145deg,#0b8068,#064d48);box-shadow:0 4px 10px rgba(8,116,95,.2);font-size:.72rem}
.public-nav>a{font-size:.88rem;font-weight:650;color:#4e6179;border-radius:9px}
.public-nav>a:hover{background:#eef5fa;color:#132c4a}
.nav-cta{background:#08745f!important;box-shadow:0 5px 12px rgba(8,116,95,.16)}
.btn{min-height:42px;padding:.68rem 1rem;border-radius:10px;background:#08745f;box-shadow:0 2px 3px rgba(8,36,64,.06);font-size:.88rem;font-weight:750;letter-spacing:-.006em}
.btn:hover{filter:none;background:#075f50;transform:translateY(-1px);box-shadow:0 5px 12px rgba(8,36,64,.10)}
.btn.line{background:#fff;border-color:#cbd6e3;color:#253953;box-shadow:none}
.btn.line:hover{background:#f5f8fc;border-color:#95a7bd;color:#102b46}
.btn.danger{background:#b42332;color:#fff}.btn.danger:hover{background:#971b27}
.btn.warn{background:#b7790d}.btn:disabled,.btn[aria-disabled="true"]{transform:none;box-shadow:none;opacity:.42;cursor:not-allowed}
.hero{background:radial-gradient(circle at 80% 12%,rgba(54,177,157,.22),transparent 34%),linear-gradient(132deg,#082f3c,#075a50 58%,#0d7964);overflow:hidden}
.hero-grid{padding:clamp(3.2rem,7vw,5.5rem) 0;gap:clamp(1.5rem,4vw,3.3rem)}
.hero h1{font-size:clamp(2.45rem,5.3vw,4.3rem);max-width:13ch;line-height:1.04;letter-spacing:-.055em}
.hero-lede{max-width:42rem;font-size:1.06rem;line-height:1.75;color:#dcebe9}
.hero-panel .card{border-color:rgba(255,255,255,.55);box-shadow:0 16px 45px rgba(1,30,36,.15)}
.section{padding:clamp(2.1rem,4.3vw,3.7rem) 0}
.page-header{gap:1rem;margin-bottom:1.2rem;align-items:end}
.page-header .eyebrow,.eyebrow{font-family:var(--sans);font-size:.68rem;letter-spacing:.105em;font-weight:850;color:#08745f}
.page-header .subtitle{max-width:70ch;color:#667991;font-size:.94rem}
.card{background:#fff;border:1px solid #dce5ef;border-radius:16px;padding:1.15rem;box-shadow:var(--shadow)}
.grid>.card,.grid .card{min-width:0}
.card:hover{border-color:#cad8e7}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:.75rem;margin-bottom:.9rem}
.card-head h3{margin:0}
.stats{gap:.85rem}
.stat{display:grid;gap:.35rem;align-content:start;min-height:118px}
.stat>span{color:#5f728a;font-size:.82rem;font-weight:680}
.stat>strong{font-size:clamp(1.35rem,2vw,1.9rem);line-height:1.15;letter-spacing:-.04em;font-variant-numeric:tabular-nums;color:#12304e}
.stat>small,.muted,.small{color:#64758b}
.feature-icon{background:#e8f5f2;color:#08745f;border-radius:11px}
.badge{border-radius:7px;padding:.22rem .52rem;font-size:.7rem;line-height:1.3;font-weight:750;border:1px solid transparent}
.badge.success{background:#eaf8f0;color:#176b42;border-color:#c5ead4}.badge.warn{background:#fff5df;color:#835500;border-color:#f3dfa6}.badge.danger{background:#fff0f0;color:#a32131;border-color:#f2c9cf}.badge.info{background:#edf4ff;color:#1a4ea3;border-color:#d4e3ff}.badge.neutral{background:#f0f3f7;color:#5a6c80;border-color:#e0e6ee}
input,select,textarea{border-color:#cbd6e3;border-radius:10px;background:#fff;color:#182a43}
input,select{min-height:43px;padding:.62rem .75rem}textarea{padding:.75rem;line-height:1.6;min-height:110px}
input::placeholder,textarea::placeholder{color:#8997a9}
.field{gap:.45rem}.field>span,.check span{font-size:.85rem;font-weight:700;color:#344861}
.field small{font-size:.76rem}
.form-grid{gap:1rem}
.alert{border-radius:11px;padding:.78rem .9rem;font-size:.88rem}.alert.success{background:#eaf8f0;border-color:#bce5cc;color:#176b42}.alert.danger{background:#fff0f0;border-color:#f0c5cd;color:#982333}
.table-wrap{border:1px solid #dce5ef;border-radius:12px;background:#fff;box-shadow:0 2px 8px rgba(20,42,75,.025)}
table{border-collapse:separate;border-spacing:0;width:100%;font-size:.87rem}
th{background:#f3f6fa;color:#4d6078;text-transform:uppercase;font-size:.68rem;letter-spacing:.055em;font-weight:820}
th,td{padding:.8rem .85rem;border-bottom:1px solid #e7edf4;text-align:left;vertical-align:middle}
tbody tr:hover td{background:#f8fbfe}tbody tr:last-child td{border-bottom:0}
.empty{border:1px dashed #cbd8e6;border-radius:14px;background:#fbfdff;padding:2rem 1.25rem;text-align:center;color:#5e7188}
.empty strong{display:block;color:#243b58;font-size:1rem}.empty p{margin:.45rem auto 0;max-width:52ch}
.loading{color:#536a83;min-height:180px;display:flex;align-items:center;justify-content:center;gap:.75rem}
.spinner{border-color:#d7e4ef;border-top-color:#08745f;width:25px;height:25px}
.app-shell{background:#f3f6fb;grid-template-columns:258px minmax(0,1fr)}
.sidebar{background:linear-gradient(180deg,#0a2e3e 0%,#092d38 64%,#08262e 100%);border-right:1px solid rgba(255,255,255,.08);box-shadow:5px 0 24px rgba(8,35,53,.06);padding:1rem .8rem}
.sidebar-brand{padding:.25rem .4rem 1.15rem;border-bottom-color:rgba(255,255,255,.12)}
.sidebar .brand{color:#fff;font-size:.93rem}.sidebar .mark{background:linear-gradient(140deg,#19a58a,#08745f);color:#fff;box-shadow:none}
.side-nav{padding:.85rem 0;gap:.9rem}.side-group{margin:.8rem .65rem .4rem;color:#91b6bf;font-size:.64rem;letter-spacing:.12em;text-transform:uppercase;font-weight:850}
.side-nav a{margin:.12rem .2rem;padding:.64rem .7rem;border:1px solid transparent;border-radius:9px;color:#c8dce0;font-size:.83rem;font-weight:600}
.side-nav a:hover{background:rgba(255,255,255,.075);color:#fff}.side-nav a.active{background:linear-gradient(90deg,rgba(23,165,135,.28),rgba(23,165,135,.1));border-color:rgba(79,205,174,.18);color:#fff;box-shadow:inset 3px 0 #35c7a3}
.side-note{font-size:.73rem;color:#a6c2c8;line-height:1.55;padding:.7rem}
.sidebar-bottom{border-top-color:rgba(255,255,255,.14);color:#b9d0d6}.sidebar-bottom a{color:#b9d0d6}
.sidebar-exit{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.15);box-shadow:none;color:#fff}
.main{min-width:0}.app-top{background:rgba(255,255,255,.92);border-bottom-color:#dce5ef;backdrop-filter:blur(12px)}.top-inner{min-height:69px;padding-inline:1.5rem}.top-inner small{font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:#657c93}.top-inner strong{font-weight:780;color:#152e49}.top-user{color:#405670;font-size:.86rem;font-weight:680}
.content-wrap{padding:clamp(1rem,2.3vw,1.75rem);max-width:1680px}
.modal-backdrop{background:rgba(8,26,45,.54);backdrop-filter:blur(3px)}.modal{border-left:1px solid #dce5ef;box-shadow:-20px 0 60px rgba(7,27,48,.22)}
.toast{border-radius:12px;box-shadow:0 12px 36px rgba(10,30,54,.16)}
.scroll-list{scrollbar-width:thin;scrollbar-color:#b6c7d9 transparent}
.course-cover img{border-radius:11px}.video-box{min-width:0}
/* CBT is intentionally separated from the normal student sidebar, as in a formal computer-based examination. */
.cbt-app{min-height:100vh;min-height:100dvh;background:#eef2f7;color:#172b45;display:flex;flex-direction:column}
.cbt-topbar{position:sticky;top:0;z-index:100;display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:76px;padding:.75rem clamp(1rem,2.2vw,2rem);background:#102d4a;color:#fff;border-bottom:1px solid #284663;box-shadow:0 5px 18px rgba(9,31,54,.14)}
.cbt-brand{display:flex;align-items:center;gap:.75rem;min-width:0}.cbt-brand .mark{width:42px;height:42px;background:linear-gradient(145deg,#0fa888,#08745f);border:1px solid rgba(255,255,255,.14)}
.cbt-brand-copy{display:grid;gap:.12rem;min-width:0}.cbt-brand-copy strong{font-size:.98rem;font-weight:820;letter-spacing:-.025em;white-space:nowrap}.cbt-brand-copy small{font-size:.72rem;color:#bdd0e2;letter-spacing:.04em}
.cbt-session{display:flex;align-items:center;gap:1.25rem}.cbt-session-label{display:inline-flex;align-items:center;gap:.45rem;padding:.45rem .7rem;border:1px solid rgba(255,255,255,.2);border-radius:8px;color:#d5e5f3;font-size:.75rem;font-weight:700;white-space:nowrap}.cbt-session-label i{width:7px;height:7px;background:#52d5a6;border-radius:50%;box-shadow:0 0 0 3px rgba(82,213,166,.14)}
.cbt-candidate{display:flex;align-items:center;gap:.6rem;padding-left:1rem;border-left:1px solid rgba(255,255,255,.2);min-width:0}.cbt-avatar{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#dce9f6;color:#123755;font-size:.75rem;font-weight:850;flex:0 0 auto}.cbt-candidate>span:last-child{display:grid;gap:.08rem;min-width:0}.cbt-candidate small{font-size:.65rem;color:#b6c9dc}.cbt-candidate strong{font-size:.8rem;color:#fff;max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cbt-stage{width:100%;max-width:1640px;padding:clamp(.8rem,1.6vw,1.5rem);margin:0 auto;flex:1;min-width:0}.cbt-safe-footer{display:flex;justify-content:space-between;gap:1rem;padding:.55rem clamp(1rem,2vw,2rem);font-size:.69rem;color:#6a7b91;background:#e7edf4;border-top:1px solid #d7e0eb}
.exam-page{max-width:none;margin:0 auto}.exam-head{display:flex;align-items:center;justify-content:space-between;gap:1.2rem;margin:0 0 1rem;padding:1.05rem 1.2rem;background:#fff;border:1px solid #d5dfeb;border-radius:14px;box-shadow:0 4px 15px rgba(19,45,75,.035)}
.exam-title-block{min-width:0}.exam-overline{margin:0 0 .28rem;color:#1a6c91;font-size:.64rem;letter-spacing:.11em;text-transform:uppercase;font-weight:850}.exam-title-block h1{font-size:clamp(1.12rem,2.2vw,1.45rem);color:#122d4b;letter-spacing:-.035em}.exam-head-meta{display:flex;align-items:center;flex-wrap:wrap;gap:.45rem;margin-top:.6rem}.exam-meta-chip{display:inline-flex;align-items:center;gap:.25rem;background:#f1f5fa;border:1px solid #dce5ef;color:#5a6e85;padding:.25rem .5rem;border-radius:6px;font-size:.7rem;font-weight:650}.exam-meta-chip strong{color:#153b64;font-variant-numeric:tabular-nums}
.exam-head-tools{display:flex;align-items:center;gap:.9rem;flex:0 0 auto}.timer{display:grid;gap:.15rem;min-width:118px;padding:.55rem .8rem;border-radius:10px;background:#eff6ff;border:1px solid #cbdfff;font:800 1.55rem/1.05 var(--sans);letter-spacing:.02em;color:#164fa2;font-variant-numeric:tabular-nums;text-align:center;box-shadow:none}.timer small{font:750 .62rem var(--sans);letter-spacing:.08em;text-transform:uppercase;color:#54739e}.exam-autosave{display:flex;align-items:center;gap:.42rem;color:#61758b;font-size:.72rem;font-weight:700;white-space:nowrap}.exam-save-dot{width:7px;height:7px;background:#16a36d;border-radius:50%;box-shadow:0 0 0 3px #e0f6ec}
.exam-grid{grid-template-columns:minmax(0,1fr) minmax(285px,335px);gap:1rem;align-items:start}.exam-main{min-width:0}.exam-question-card{padding:0;overflow:hidden;border-radius:14px;box-shadow:0 5px 20px rgba(20,47,80,.055)}.question-card-head{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 1.25rem;border-bottom:1px solid #e2e9f2;background:#fbfcfe}.question-number-block{display:grid;gap:.12rem;flex:0 0 auto}.question-number-block>span{font-size:.61rem;letter-spacing:.1em;color:#6b7d93;font-weight:850}.question-number-block>strong{font-size:1.12rem;color:#12375b;line-height:1.1;font-weight:820;font-variant-numeric:tabular-nums}.question-number-block small{font-size:.78rem;color:#8a9aae;font-weight:650}.question-rule-chips{display:flex;align-items:center;justify-content:flex-end;gap:.35rem;flex-wrap:wrap}.question-rule-chips .badge{font-size:.65rem}
.exam-question-text{font-size:1.12rem;font-weight:630;line-height:1.75;margin:0;padding:1.4rem 1.35rem .8rem;color:#182c45}.exam-question-text .content-language+.content-language{border-top:1px solid #e2e9f2;margin-top:.8rem;padding-top:.75rem}.exam-main .language-caption{margin-bottom:.28rem;color:#536a85;font-size:.67rem;letter-spacing:.05em}.exam-main .question-rich p{margin:.15rem 0 .65rem}.exam-main .question-rich p:last-child{margin-bottom:0}.exam-main .question-image{max-height:330px;margin:.7rem 1.35rem 1rem;max-width:calc(100% - 2.7rem)}
.selection-hint{display:flex;justify-content:space-between;gap:.8rem;flex-wrap:wrap;margin:0 1.35rem .65rem;color:#586c83;font-size:.74rem;font-weight:700}.selection-hint-keyboard{font-weight:550;color:#8a98a9}.options{display:grid;gap:.55rem;padding:0 1.35rem 1.25rem}.option{display:grid;grid-template-columns:36px minmax(0,1fr);align-items:center;gap:.75rem;text-align:left;padding:.68rem .8rem;border:1px solid #d7e1ed;border-radius:10px;background:#fff;color:#182d46;min-height:54px;box-shadow:0 1px 2px rgba(18,45,75,.02)}.option:hover{background:#f8fbff;border-color:#8ab6eb;transform:none;box-shadow:0 3px 10px rgba(37,99,165,.07)}.option.selected{background:#eff6ff;border:1.5px solid #286bd6;box-shadow:inset 0 0 0 1px rgba(40,107,214,.06)}.option .option-letter{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:#f1f5fa;border:1px solid #dbe4ee;color:#314b69;font-weight:800;font-size:.82rem}.option.selected .option-letter{background:#1c64d1;border-color:#1c64d1;color:#fff}.option-copy{gap:.22rem;color:#152a45;font-size:.94rem;font-weight:600}.exam-subjective-field{margin:0 1.35rem 1.25rem}.exam-subjective-field textarea{min-height:160px}
.paper-actions{position:sticky;bottom:0;z-index:8;display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;margin:0;padding:.85rem 1rem;border-top:1px solid #dbe4ef;background:rgba(255,255,255,.97);backdrop-filter:blur(12px)}.paper-actions .btn{min-height:42px;font-size:.78rem;padding:.65rem .8rem}.paper-actions .exam-nav-btn{white-space:nowrap}.paper-actions .exam-save-next{background:#145fc4}.paper-actions .exam-save-next:hover{background:#104fa5}.paper-actions .review-action{background:#fff5d9;border-color:#eacb79;color:#855700}.paper-actions .review-action:hover{background:#ffedb9}.paper-actions-spacer{flex:1;min-width:0}
.exam-side{min-width:0}.exam-side-panel{position:sticky;top:92px;background:#fff;border:1px solid #d5dfeb;border-radius:14px;padding:1rem;box-shadow:0 5px 20px rgba(20,47,80,.045)}.exam-panel-head{display:flex;align-items:center;justify-content:space-between;gap:.65rem;padding-bottom:.7rem;border-bottom:1px solid #e5ebf3}.exam-panel-head .exam-overline{margin:0 0 .15rem}.exam-panel-head h2{font-size:1rem;letter-spacing:-.025em;color:#17314f}.exam-total-pill{white-space:nowrap;background:#edf4fb;border:1px solid #dae7f5;border-radius:7px;padding:.3rem .45rem;color:#435d7a;font-size:.68rem;font-weight:750}
.exam-status-summary{grid-template-columns:1fr;gap:.4rem;margin:.75rem 0;padding:0;border:0;background:transparent}.exam-stat{display:flex;align-items:center;justify-content:space-between;gap:.7rem;padding:.35rem .45rem;background:#f6f8fb;border:1px solid #e5ebf3;border-radius:8px}.exam-stat span{color:#5c6f85;font-size:.72rem;font-weight:700}.exam-stat strong{min-width:29px;min-height:26px;padding:0 .45rem;border-radius:6px;font-size:.78rem}.exam-stat.answered strong{background:#dcf7e7;color:#14633d}.exam-stat.review strong{background:#fff1c2;color:#815400}.exam-stat.unanswered strong{background:#e9eef5;color:#4b5c71}
.exam-palette-scroll{max-height:min(38vh,340px);min-height:95px;overflow:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#b6c8da transparent;border:1px solid #e1e8f1;border-radius:9px;padding:.55rem;background:#f9fbfd}.palette{grid-template-columns:repeat(6,minmax(0,1fr));gap:.35rem}.palette-btn{position:relative;display:flex;align-items:center;justify-content:center;min-width:0;width:100%;height:34px;aspect-ratio:auto;border:1px solid #d9e2ec;border-radius:7px;background:#fff;color:#394e67;font-size:.74rem;font-weight:780;font-variant-numeric:tabular-nums;box-shadow:none}.palette-btn::before{content:"";position:absolute;top:4px;right:4px;width:5px;height:5px;border-radius:50%;background:#abb6c4}.palette-btn:hover{border-color:#7ca9df;background:#f0f6ff;transform:none}.palette-btn.current{outline:2px solid #2367d1;outline-offset:0;border-color:#2367d1;background:#eaf2ff;color:#174f9f;box-shadow:inset 0 0 0 1px #2367d1;z-index:1}.palette-btn.answered{background:#e6f7ed;border-color:#b7e4c9;color:#145e39}.palette-btn.answered::before{background:#15965b}.palette-btn.marked{background:#fff3cd;border-color:#edcf7a;color:#765000;box-shadow:none}.palette-btn.marked::before{background:#d99807}.palette-btn.answered.marked{background:linear-gradient(135deg,#e6f7ed 0 50%,#fff3cd 50% 100%);border-color:#d4c789;color:#344a39}.palette-btn.answered.marked::before{background:#8d7b30}.palette-btn.not-answered{background:#fff1f0;border-color:#f2c5c2;color:#992d2b}.palette-btn.not-answered::before{background:#d9433b}.palette-btn.not-visited{background:#fff;border-color:#dbe3ed;color:#52647a}.palette-btn.not-visited::before{background:#aab6c4}
.exam-legend{display:grid;grid-template-columns:1fr 1fr;gap:.45rem .6rem;margin:.8rem 0 .95rem}.exam-legend>div{display:flex;align-items:center;gap:.4rem;min-width:0;color:#61748a;font-size:.66rem;font-weight:640}.legend-swatch{width:10px;height:10px;flex:0 0 auto;border-radius:3px}.legend-swatch.answered{background:#20a667;border-color:#20a667}.legend-swatch.not-answered{background:#d9433b;border-color:#d9433b}.legend-swatch.marked{background:#f4b322;border-color:#f4b322}.legend-swatch.answered-marked{background:linear-gradient(135deg,#20a667 0 50%,#f4b322 50% 100%);border-color:#c3b56f}.legend-swatch.not-visited{background:#aab6c4;border-color:#aab6c4}
.exam-submit-area{padding-top:.85rem;border-top:1px solid #e5ebf3}.exam-submit-area .btn{min-height:45px;border-radius:9px;font-weight:800}.exam-submit-area small{display:block;text-align:center;color:#75869a;font-size:.66rem;line-height:1.45;margin-top:.5rem}
.exam-load-error{max-width:850px;margin:1.5rem auto;padding:1rem}.exam-autosave [id="autosave-status"]{font-variant-numeric:tabular-nums}
.exam-page .question-rich{overflow-wrap:anywhere}.exam-page .math-block{background:#f3f7fc;border:1px solid #e1e9f4;color:#1d3553}.exam-page .rich-table-wrap table{min-width:280px}.exam-page .rich-table-wrap th{background:#edf3f9}
@media(min-width:1250px){.exam-palette-scroll{max-height:min(44vh,420px)}.exam-status-summary{grid-template-columns:1fr 1fr 1fr}.exam-stat{align-items:center;flex-direction:column;gap:.25rem}.exam-stat span{text-align:center;font-size:.64rem;line-height:1.25}.exam-stat strong{font-size:.86rem}}
@media(max-width:1000px){.app-shell{grid-template-columns:238px minmax(0,1fr)}.exam-grid{grid-template-columns:minmax(0,1fr) 285px}.exam-palette-scroll{max-height:280px}.exam-status-summary{grid-template-columns:1fr}.exam-stat{align-items:center;flex-direction:row}.exam-stat span{text-align:left;font-size:.72rem}.exam-stat strong{font-size:.78rem}}
@media(max-width:760px){.wrap{width:calc(100% - 1.25rem)}.hero-grid{padding:3rem 0}.app-shell{display:block}.content-wrap{padding:.9rem}.app-top .top-inner{padding-inline:.9rem}.card{padding:1rem;border-radius:14px}.stats{gap:.55rem}.stat{min-height:100px}.cbt-topbar{min-height:64px;padding:.65rem .8rem;align-items:center}.cbt-brand .mark{width:36px;height:36px}.cbt-brand-copy strong{font-size:.83rem}.cbt-brand-copy small{font-size:.62rem}.cbt-session{gap:.6rem}.cbt-session-label{display:none}.cbt-candidate{padding-left:.6rem}.cbt-candidate strong{max-width:108px;font-size:.7rem}.cbt-avatar{width:30px;height:30px}.cbt-stage{padding:.65rem}.cbt-safe-footer{flex-direction:column;gap:.2rem;padding:.55rem .8rem}.exam-head{align-items:flex-start;padding:.85rem;gap:.7rem}.exam-title-block h1{font-size:1.08rem}.exam-head-tools{gap:.55rem;flex-direction:column;align-items:flex-end}.timer{min-width:104px;font-size:1.27rem;padding:.5rem}.exam-autosave{font-size:.65rem}.exam-grid{grid-template-columns:minmax(0,1fr);gap:.75rem}.exam-main{order:0}.exam-side{order:1}.exam-side-panel{position:static;padding:.75rem}.exam-palette-scroll{max-height:225px;min-height:100px}.palette{grid-template-columns:repeat(8,minmax(0,1fr));gap:.28rem}.palette-btn{height:31px;font-size:.69rem;border-radius:6px}.palette-btn::before{top:3px;right:3px;width:4px;height:4px}.exam-status-summary{grid-template-columns:repeat(3,minmax(0,1fr));gap:.3rem}.exam-stat{align-items:center;flex-direction:column;gap:.25rem;padding:.4rem}.exam-stat span{font-size:.59rem;line-height:1.2;text-align:center}.exam-stat strong{min-width:25px;min-height:23px;font-size:.72rem}.exam-legend{grid-template-columns:repeat(2,minmax(0,1fr))}.question-card-head{padding:.8rem}.question-rule-chips{max-width:70%;gap:.25rem}.question-rule-chips .badge{font-size:.6rem;padding:.19rem .35rem}.exam-question-text{font-size:1rem;padding:1rem .85rem .7rem;line-height:1.75}.selection-hint{margin:0 .85rem .55rem;font-size:.69rem}.selection-hint-keyboard{display:none}.options{padding:0 .85rem 1rem;gap:.45rem}.option{grid-template-columns:32px minmax(0,1fr);gap:.6rem;padding:.6rem;min-height:48px}.option .option-letter{width:29px;height:29px}.option-copy{font-size:.9rem}.exam-question-card .question-image{max-width:calc(100% - 1.7rem);margin:.5rem .85rem .8rem}.exam-subjective-field{margin:0 .85rem 1rem}.paper-actions{position:sticky;bottom:0;gap:.4rem;padding:.65rem .55rem}.paper-actions .btn{min-height:41px;font-size:.69rem;padding:.55rem .6rem;flex:1 1 calc(50% - .4rem);min-width:0}.paper-actions .exam-nav-btn{white-space:normal;line-height:1.2}.paper-actions .paper-actions-spacer{display:none}.paper-actions .exam-clear-btn{order:2}.paper-actions [data-action="exam-prev"]{order:1}.paper-actions [data-action="exam-mark"]{order:3}.paper-actions [data-action="exam-next"]{order:4}.exam-side-panel .exam-overline{font-size:.59rem}.exam-panel-head h2{font-size:.93rem}}
@media(max-width:420px){.cbt-brand-copy strong{max-width:168px;overflow:hidden;text-overflow:ellipsis}.cbt-candidate small{display:none}.cbt-candidate strong{max-width:84px}.exam-head{flex-direction:row}.exam-head-tools{flex:0 0 auto}.exam-title-block{flex:1}.exam-meta-chip{font-size:.62rem}.exam-autosave{max-width:112px;white-space:normal;justify-content:flex-end;text-align:right}.exam-status-summary{grid-template-columns:repeat(3,minmax(0,1fr))}.exam-stat{align-items:center;flex-direction:column}.exam-stat span{font-size:.56rem}.palette{grid-template-columns:repeat(6,minmax(0,1fr))}.exam-legend{grid-template-columns:1fr 1fr}.question-card-head{align-items:flex-start}.question-number-block>strong{font-size:1rem}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}


/* Professional release checkpoint: content states, public landing hierarchy and admin workflows. */
.hero-trust-row{display:flex;gap:.65rem 1rem;flex-wrap:wrap;margin-top:1.5rem;color:#d6e6de;font-size:.78rem;font-weight:750}.hero-trust-row span{display:inline-flex;align-items:center;gap:.4rem}.status-dot{width:7px;height:7px;border-radius:50%;background:#83dfb1;box-shadow:0 0 0 4px rgba(131,223,177,.13)}.hero-panel-foot{display:flex;justify-content:space-between;gap:.7rem;margin-top:1rem;padding-top:.75rem;border-top:1px solid var(--line);font-size:.72rem;color:var(--muted)}.public-section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:1rem;margin-bottom:1.25rem}.public-section-heading h2{font-size:clamp(1.8rem,3vw,2.5rem);max-width:20ch}.public-feature-section{padding-top:1rem;padding-bottom:4rem}.inline-state{padding:1rem;border-radius:14px;border:1px solid var(--line);background:var(--surface)}.table-secondary{display:block;margin-top:.3rem;font-size:.72rem;color:var(--muted);max-width:240px;overflow-wrap:anywhere}.import-format-strip{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;padding:.95rem;margin-bottom:1rem;border:1px solid var(--line);border-radius:14px;background:linear-gradient(135deg,var(--surface2),var(--surface))}.import-format-strip strong{margin-right:.2rem}.import-format-strip>span{display:inline-flex;align-items:center;padding:.3rem .55rem;border:1px solid var(--line);border-radius:999px;background:var(--surface);font-size:.7rem;font-weight:850}.import-format-strip p{flex-basis:100%;margin:.1rem 0 0;font-size:.8rem}.import-form{align-items:start}.import-preview-modal{justify-content:center;align-items:center;padding:1rem}.import-preview-sheet{width:min(1000px,96vw);height:min(92vh,1000px);border:1px solid var(--line);border-radius:22px}.import-preview-summary{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:.55rem;margin:.4rem 0 1rem}.import-preview-summary>span{display:grid;gap:.2rem;padding:.7rem;border:1px solid var(--line);border-radius:12px;background:var(--surface2);font-size:.7rem;color:var(--muted)}.import-preview-summary strong{font-size:1.25rem;color:var(--ink)}.import-preview-rows{display:grid;gap:.8rem;max-height:calc(92vh - 260px);overflow:auto;padding-right:.25rem}.preview-question{padding:1rem;border:1px solid var(--line);border-radius:15px;background:var(--surface)}.preview-question h3{font:750 1rem/1.6 var(--sans);letter-spacing:0;margin:.55rem 0}.preview-assamese{padding:.7rem .8rem;margin:.4rem 0;border-left:3px solid var(--green);border-radius:0 10px 10px 0;background:var(--soft);font-size:1rem;line-height:1.7}.preview-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.45rem}.preview-options>div{display:grid;grid-template-columns:26px minmax(0,1fr);gap:.4rem;align-items:start;padding:.6rem;border:1px solid var(--line);border-radius:10px;background:var(--surface)}.preview-options b{display:grid;place-items:center;width:24px;height:24px;border-radius:7px;background:var(--surface2)}.preview-options span,.preview-options small{overflow-wrap:anywhere}.preview-options small{grid-column:2;color:var(--muted);font-size:.85rem;line-height:1.5}.preview-errors{margin:.7rem 0 0;padding:.7rem .7rem .7rem 2rem;border:1px solid #edbdc3;border-radius:10px;background:var(--danger-soft);color:#8b2634}.workflow-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.6rem;margin:-.45rem 0 1rem}.workflow-steps span{display:flex;gap:.55rem;align-items:center;padding:.7rem;border:1px solid var(--line);border-radius:12px;background:var(--surface);font-size:.78rem;font-weight:800}.workflow-steps b{display:grid;place-items:center;flex:0 0 27px;height:27px;border-radius:9px;background:var(--soft);color:var(--green)}.announcement-actions{display:flex;gap:.4rem;flex-wrap:wrap}
@media(max-width:760px){.hero-trust-row{gap:.5rem .7rem}.public-section-heading{align-items:flex-start;flex-direction:column}.import-preview-modal{padding:.35rem}.import-preview-sheet{height:96vh;width:100%;padding:.8rem;border-radius:16px}.import-preview-summary{grid-template-columns:repeat(3,minmax(0,1fr))}.import-preview-rows{max-height:calc(96vh - 280px)}.preview-options{grid-template-columns:1fr}.workflow-steps{grid-template-columns:repeat(2,minmax(0,1fr))}.workflow-steps span{font-size:.72rem;padding:.55rem}.import-form.form-grid.two{grid-template-columns:1fr}.import-form .span-2{grid-column:auto}}
@media(max-width:430px){.hero-trust-row span{font-size:.68rem}.hero-panel-foot{flex-direction:column}.import-preview-summary{grid-template-columns:repeat(2,minmax(0,1fr))}.workflow-steps{grid-template-columns:1fr 1fr}.preview-question{padding:.75rem}}
.alert.warning{background:var(--warn-soft);border-color:#ebd08a;color:#7c5600}

/* Nested course taxonomy: structured, scan-friendly hierarchy for admins. */
.taxonomy-node{border:1px solid var(--line);border-radius:14px;padding:14px;background:var(--surface,#fff);margin-top:10px}
.taxonomy-node-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.taxonomy-node-head>div{display:grid;gap:4px;min-width:0}
.taxonomy-node-head small{color:var(--muted);font-size:.78rem}
.taxonomy-child{margin:12px 0 0 14px;border-left:2px solid var(--line);padding:10px 0 0 14px}
.taxonomy-topics{display:grid;gap:7px;margin-top:10px}
.taxonomy-topic{display:flex;align-items:center;justify-content:space-between;gap:10px;border:1px solid var(--line);border-radius:9px;padding:8px 10px;font-size:.88rem;background:var(--surface-muted,#f8fafc)}
@media(max-width:640px){.taxonomy-node{padding:11px}.taxonomy-child{margin-left:5px;padding-left:10px}.taxonomy-node-head{gap:8px}}


/* Science Point Assam R6 — cohesive, premium EdTech visual system. */
:root{
  --bg:#f4f7fb;
  --surface:#ffffff;
  --surface2:#edf3f7;
  --ink:#132d40;
  --muted:#617487;
  --line:#d9e4ed;
  --green:#08785c;
  --green2:#073a35;
  --soft:#e2f5ed;
  --gold:#e7ad43;
  --danger:#b42338;
  --danger-soft:#fff0f1;
  --warn:#8a5a00;
  --warn-soft:#fff6dd;
  --info:#205a83;
  --info-soft:#e8f3fb;
  --shadow:0 18px 55px rgba(18,45,64,.09);
  --display:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --sans:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{background:linear-gradient(180deg,#f8fafc 0%,var(--bg) 72%);color:var(--ink);letter-spacing:-.005em}
h1,h2,h3,h4{font-family:var(--display);font-weight:780;letter-spacing:-.045em}
h1{line-height:1.04}
h2{line-height:1.12}
.wrap{width:min(1240px,calc(100% - 2.5rem))}
.top{background:rgba(255,255,255,.9);border-bottom-color:rgba(207,220,231,.88);box-shadow:0 3px 18px rgba(18,45,64,.035)}
.topbar{min-height:76px}
.brand{font-family:var(--sans);font-weight:850;letter-spacing:-.035em}
.mark{border-radius:13px;background:linear-gradient(145deg,#0d8a68,#07523f);box-shadow:0 6px 15px rgba(8,120,92,.22)}
.public-nav>a{font-weight:680;color:#526b7e}
.public-nav>a:hover{background:#edf6f2;color:var(--green)}
.btn{min-height:44px;padding:.72rem 1.08rem;border-radius:12px;background:linear-gradient(135deg,#0b8061,#076448);box-shadow:0 4px 10px rgba(8,120,92,.12);font-weight:760;transition:transform .16s ease,box-shadow .16s ease,background .16s ease}
.btn:hover{filter:none;transform:translateY(-2px);box-shadow:0 9px 22px rgba(8,120,92,.19)}
.btn.line{background:#fff;border-color:#cfdee7;color:#25475a;box-shadow:none}
.btn.line:hover{background:#f5faf8;border-color:#9ecbbb;color:#075f49}
.btn.light-btn{color:#075b44;box-shadow:0 8px 22px rgba(0,0,0,.08)}
.btn.ghost-btn{box-shadow:none;border-color:rgba(255,255,255,.32);background:rgba(255,255,255,.055)}
.hero{position:relative;isolation:isolate;overflow:hidden;background:radial-gradient(ellipse at 84% 5%,rgba(43,188,143,.3),transparent 33%),radial-gradient(ellipse at 5% 90%,rgba(57,124,199,.16),transparent 38%),linear-gradient(120deg,#062c2d 0%,#07473d 54%,#0a6550 100%)}
.hero:before{content:"";position:absolute;z-index:-1;right:-10rem;top:-14rem;width:40rem;height:40rem;border:1px solid rgba(255,255,255,.1);border-radius:50%;box-shadow:0 0 0 38px rgba(255,255,255,.025),0 0 0 82px rgba(255,255,255,.02),0 0 0 132px rgba(255,255,255,.014);pointer-events:none}
.hero:after{content:"";position:absolute;z-index:-1;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent)}
.hero-grid{position:relative;grid-template-columns:minmax(0,1.12fr) minmax(340px,.88fr);gap:clamp(2rem,5vw,5rem);padding:clamp(4rem,7vw,6.2rem) 0;min-height:495px}
.hero h1{font-size:clamp(2.65rem,5.2vw,4.65rem);max-width:13ch;letter-spacing:-.065em;font-weight:850;text-wrap:balance}
.hero-lede{max-width:43rem;font-size:clamp(1rem,1.4vw,1.13rem);line-height:1.8;color:#d3e9e1;margin:1.35rem 0 1.65rem}
.eyebrow{font-family:var(--sans);font-size:.69rem;letter-spacing:.16em;font-weight:850}
.eyebrow.light{color:#a9f0d3}
.hero-panel .card{border:1px solid rgba(255,255,255,.72);background:rgba(255,255,255,.97);border-radius:26px;padding:clamp(1.35rem,2vw,2rem);box-shadow:0 30px 80px rgba(0,0,0,.2)}
.hero-panel .card h2{font-size:clamp(1.65rem,2.6vw,2.35rem);letter-spacing:-.055em}
.hero-panel .card>p.muted{font-size:.95rem;line-height:1.75}
.metric-grid{gap:.65rem;margin-top:1.5rem}
.metric-grid>span{padding:.9rem .65rem;border:1px solid #e0e9ef;border-radius:14px;background:linear-gradient(180deg,#fbfdff,#f4f8fb)}
.metric-grid strong{font:850 1.45rem/1 var(--sans);letter-spacing:-.05em;color:#08785c}
.metric-grid small{font-size:.7rem;text-transform:uppercase;letter-spacing:.07em;color:#607789;font-weight:750}
.hero-panel-foot{font-weight:680;color:#617487;border-top-color:#e1eaf0}
.hero-trust-row{color:#d7eee5;font-weight:680;gap:.7rem 1.1rem}
.section{padding:clamp(2.7rem,5vw,4.25rem) 0}
.public-section-heading{margin-bottom:1.55rem}
.public-section-heading h2{font-size:clamp(1.75rem,3.1vw,2.65rem);font-weight:830;letter-spacing:-.055em}
.subtitle{line-height:1.75;max-width:55rem}
.grid{gap:1.15rem}
.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{background:var(--surface);border:1px solid #dfe8ef;border-radius:20px;padding:1.35rem;box-shadow:0 4px 16px rgba(16,47,65,.035);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.card h2{font-size:1.45rem;letter-spacing:-.045em}
.card h3{font-family:var(--sans);font-size:1.08rem;line-height:1.35;letter-spacing:-.025em;font-weight:780}
.course-cover{height:180px;border-radius:16px;background:linear-gradient(135deg,#e6f5ef,#e6eff8);overflow:hidden;margin:0 0 1.15rem}
.course-cover img{width:100%;height:100%;display:block;object-fit:cover;transition:transform .35s ease}
.placeholder-cover{position:relative;isolation:isolate;background:radial-gradient(circle at 85% 15%,rgba(12,147,107,.19),transparent 34%),linear-gradient(135deg,#e2f5ee,#e8f0f8);font-weight:820;letter-spacing:-.03em}
.placeholder-cover:after{content:"SP";position:absolute;z-index:-1;right:12px;bottom:-40px;font-size:8rem;line-height:1;font-weight:900;color:rgba(8,120,92,.08);letter-spacing:-.1em}
.grid.three>.card:hover,.grid.three>article:hover{transform:translateY(-4px);border-color:#bddbcf;box-shadow:0 16px 36px rgba(16,47,65,.09)}
.grid.three>.card:hover .course-cover img{transform:scale(1.035)}
.lead{color:#435d6e;line-height:1.8}
.text-link{color:#08785c;font-weight:800}
.text-link:hover{text-decoration:underline;text-underline-offset:3px}
.badge{border-color:#dce6ed;background:#f2f6f9;color:#496275;font-weight:780}
.badge.success{background:#e6f7ef;border-color:#b9e6d1;color:#08724f}
.badge.info{background:#eaf4fb;border-color:#c6deef;color:#245d83}
.stat{padding:1.15rem 1.25rem;border:1px solid #dce6ee;border-radius:18px;background:#fff;box-shadow:0 4px 16px rgba(16,47,65,.03)}
.stat span{letter-spacing:.1em;color:#6a8191}
.stat strong{font-family:var(--sans);font-size:2rem;letter-spacing:-.06em;font-weight:850;color:#173f50}
.auth{padding:clamp(2rem,4vw,4rem) 1rem;background:radial-gradient(ellipse at 50% 0,rgba(8,120,92,.07),transparent 45%)}
.auth-card{border:1px solid #dce6ee;border-radius:24px;box-shadow:0 20px 65px rgba(19,45,64,.1);padding:clamp(1.25rem,3vw,2rem)}
.auth-card h1{font-size:clamp(1.8rem,4vw,2.5rem)}
.field>span{color:#405c6f;font-size:.79rem}
.field input,.field select,.field textarea,.search,.toolbar-input{background:#fff;border-color:#d4e0e8;border-radius:12px;min-height:44px;transition:border-color .15s ease,box-shadow .15s ease}
.field textarea{min-height:125px}
.field input:focus,.field select:focus,.field textarea:focus,.search:focus{border-color:#69b89b;box-shadow:0 0 0 4px rgba(8,120,92,.1)}
.alert{border-radius:14px;padding:.85rem 1rem;line-height:1.6}
.footer{border-top-color:#dce6ee;background:rgba(255,255,255,.5);padding-inline:max(1.25rem,calc((100vw - 1240px)/2));gap:1rem}
.app-shell{grid-template-columns:264px minmax(0,1fr);background:#f4f7fb}
.sidebar{background:linear-gradient(180deg,#102f36 0%,#0d282e 100%);border-right:1px solid rgba(255,255,255,.06);padding:1.15rem .95rem;gap:.75rem}
.sidebar-brand{padding:.45rem .25rem 1.05rem;border-bottom-color:rgba(219,245,235,.12)}
.sidebar .mark{background:linear-gradient(145deg,#14a477,#087052);box-shadow:none}
.side-group{color:#83a99d;letter-spacing:.14em;font-size:.63rem;margin-top:1rem}
.side-nav>a,.side-nav>div>a{padding:.65rem .78rem;border-radius:11px;color:#c2d8d5;font-weight:620;transition:background .14s ease,color .14s ease}
.side-nav>a:hover,.side-nav>a.active,.side-nav>div>a:hover,.side-nav>div>a.active{background:linear-gradient(90deg,rgba(39,176,132,.22),rgba(39,176,132,.07));color:#fff;box-shadow:inset 3px 0 #35c89a}
.side-note{color:#a7c0bc;line-height:1.65}
.sidebar-exit{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.16)}
.app-top{background:rgba(255,255,255,.94);border-bottom-color:#dce6ee;box-shadow:0 4px 18px rgba(19,45,64,.025)}
.top-inner{min-height:70px;padding-inline:clamp(.9rem,2vw,1.6rem)}
.top-inner strong{letter-spacing:-.025em}
.content-wrap{padding:clamp(1rem,2.4vw,1.9rem);max-width:1540px}
.page-header{margin-bottom:1.5rem;align-items:flex-end}
.page-header h1{font-size:clamp(1.8rem,3vw,2.55rem);letter-spacing:-.06em}
.page-header .subtitle{max-width:60rem}
.quick{background:linear-gradient(135deg,#fff,#f3f8fb);border-color:#dce6ee;border-radius:15px;transition:transform .16s ease,border-color .16s ease}
.quick:hover{transform:translateY(-2px);border-color:#a6d1bf}
.inset{background:#f0f6f8;border:1px solid #e0e9ee;border-radius:15px}
.table-wrap{border:1px solid #dce6ee;border-radius:16px;background:#fff;box-shadow:0 4px 16px rgba(16,47,65,.025)}
.table-wrap table{border-collapse:separate;border-spacing:0;min-width:680px}
.table-wrap th{background:#f3f7fa;letter-spacing:.09em;color:#597182;padding:.9rem .85rem;border-top:0}
.table-wrap th:first-child{border-top-left-radius:15px}
.table-wrap th:last-child{border-top-right-radius:15px}
.table-wrap td{padding:.85rem;border-top:1px solid #e8eef3;line-height:1.55}
.table-wrap tbody tr:hover td{background:#f8fbfd}
.list-row{border-color:#e6edf2;padding:.9rem 0}
.empty{border:1px dashed #c9d8e2;border-radius:16px;background:#fbfdff;padding:2.3rem 1rem}
.loading{color:#60798a}
.video-placeholder{background:radial-gradient(circle at 82% 10%,rgba(47,202,149,.25),transparent 36%),linear-gradient(135deg,#092f31,#0c6b50);border-radius:20px}
.focus-ring:focus-visible,button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(23,156,116,.45);outline-offset:3px}
button,a,input,select,textarea{touch-action:manipulation}
img,video,canvas,svg{max-width:100%}
.hero .btn:focus-visible{outline-color:#fff}
@media(min-width:761px){.app-shell .main{background:#f5f8fb}.app-shell .content-wrap>.card,.app-shell .content-wrap>.grid>.card{box-shadow:0 4px 18px rgba(18,45,64,.035)}}
@media(max-width:1000px){.hero-grid{grid-template-columns:minmax(0,1fr) minmax(300px,.85fr);gap:1.6rem}.app-shell{grid-template-columns:232px minmax(0,1fr)}.grid.three{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.wrap{width:calc(100% - 1.25rem)}.topbar{min-height:66px}.hero-grid{grid-template-columns:minmax(0,1fr);padding:3.4rem 0;min-height:0;gap:2rem}.hero h1{font-size:clamp(2.45rem,10vw,3.65rem);max-width:12ch}.hero-panel .card{border-radius:20px}.section{padding:2.7rem 0}.grid.three{grid-template-columns:minmax(0,1fr)}.public-section-heading{gap:.9rem}.app-shell{display:block}.sidebar{width:min(320px,88vw);padding:1rem}.content-wrap{padding:.95rem}.app-top .top-inner{padding-inline:.85rem}.card{padding:1rem;border-radius:16px}.stats{gap:.6rem}.stat{min-height:98px}.page-header h1{font-size:1.9rem}.table-wrap{border-radius:13px}.footer{padding:1.1rem 1rem}}
@media(max-width:460px){.hero h1{font-size:2.45rem}.hero-lede{font-size:.98rem}.hero-trust-row{gap:.55rem .75rem}.hero-trust-row span{font-size:.67rem}.metric-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.metric-grid>span{padding:.75rem .45rem}.metric-grid strong{font-size:1.2rem}.metric-grid small{font-size:.61rem}.stats{grid-template-columns:repeat(2,minmax(0,1fr))}.stat strong{font-size:1.65rem}.quick-grid{grid-template-columns:minmax(0,1fr)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}

/* R9 admin reporting polish */
.analytics-metrics{grid-template-columns:repeat(4,minmax(0,1fr));gap:.85rem}
.analytics-value{display:block;color:#12304e;font-size:clamp(1.5rem,2.5vw,2.2rem);line-height:1.2;letter-spacing:-.045em;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.analytics-detail{max-height:320px;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere;font-size:.78rem}
.analytics-raw summary,details.card summary{cursor:pointer;font-weight:750;color:#334c66}
.analytics-raw[open] summary,details.card[open] summary{margin-bottom:.8rem}
@media(max-width:1050px){.analytics-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:520px){.analytics-metrics{grid-template-columns:1fr}.analytics-metrics .card{min-height:auto}}