/* ============================================================
   ConceptX SSC — Design System
   Clean, professional exam-prep UI (light theme)
   ============================================================ */
:root{
  --bg:#f4f7fb; --surface:#ffffff; --surface2:#eef3fa;
  --ink:#0f1f38; --ink-2:#3c4a63; --muted:#64748b; --line:#e3eaf4; --line2:#d3deec;
  --brand:#3f63f6; --brand-2:#1f4ed8; --brand-soft:#eef2ff; --brand-line:#d9e0ff;
  --cyan:#0891b2; --cyan-soft:#e0f6fb;
  --ok:#12a166; --ok-soft:#e5f7ef; --bad:#d64550; --bad-soft:#fdeaec;
  --warn:#c27803; --warn-soft:#fdf3e0; --review:#7c5cd6; --review-soft:#f1edfd;
  --radius:14px; --radius-lg:20px;
  --shadow-sm:0 1px 2px rgba(15,31,56,.05);
  --shadow:0 6px 24px -8px rgba(15,31,56,.12);
  --shadow-lg:0 16px 44px -14px rgba(15,31,56,.18);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;line-height:1.55;overflow-x:hidden}
img,svg{max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
::selection{background:var(--brand);color:#fff}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- Header ---------- */
.site-head{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:66px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.4px}
.logo .mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--cyan));color:#fff;display:grid;place-items:center;font-size:15px;font-weight:900}
.logo b{font-weight:800}
.logo b i{font-style:normal;color:var(--brand)}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{padding:9px 14px;border-radius:10px;font-size:14px;font-weight:600;color:var(--ink-2)}
.main-nav a:hover{background:var(--surface2);color:var(--ink)}
.main-nav a.active{color:var(--brand);background:var(--brand-soft)}
.head-cta{display:flex;align-items:center;gap:10px}
.hamburger{display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:11px;cursor:pointer;padding:0}
.hamburger svg{display:block;margin:auto}

/* mobile drawer */
.mobile-nav{display:none;border-top:1px solid var(--line);background:#fff}
.mobile-nav.open{display:block}
.mobile-nav .wrap{display:flex;flex-direction:column;padding-top:8px;padding-bottom:14px}
.mobile-nav a{padding:12px 6px;border-bottom:1px solid var(--line);font-weight:600;font-size:15px}
.mobile-nav a.active{color:var(--brand)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 18px;border-radius:11px;border:1px solid transparent;background:var(--brand);color:#fff;font-weight:700;font-size:14px;cursor:pointer;transition:background .15s,box-shadow .15s,transform .15s;text-align:center}
.btn:hover{background:var(--brand-2)}
.btn:active{transform:translateY(1px)}
.btn.primary{box-shadow:0 6px 16px -4px rgba(63,99,246,.45)}
.btn.ghost{background:#fff;color:var(--ink);border-color:var(--line2)}
.btn.ghost:hover{background:var(--surface2);color:var(--ink)}
.btn.soft{background:var(--brand-soft);color:var(--brand-2)}
.btn.soft:hover{background:var(--brand-line)}
.btn.danger{background:var(--bad)}
.btn.danger:hover{background:#b93641}
.btn.sm{padding:8px 13px;font-size:13px;border-radius:9px}
.btn.lg{padding:14px 26px;font-size:15px;border-radius:13px}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn.block{width:100%}

/* ---------- Layout helpers ---------- */
.page{padding:30px 0 56px}
.section{padding:40px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:20px;flex-wrap:wrap}
.section-head h2{margin:0;font-size:24px;letter-spacing:-.5px}
.section-head p{margin:4px 0 0;color:var(--muted);font-size:14px}
.eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:11.5px;font-weight:800;letter-spacing:.9px;color:var(--brand-2);background:var(--brand-soft);border:1px solid var(--brand-line);padding:6px 11px;border-radius:99px}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g5{grid-template-columns:repeat(5,1fr)}

/* ---------- Cards ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}
.card.pad{padding:22px}
.card.hoverable{transition:transform .18s,box-shadow .18s,border-color .18s}
.card.hoverable:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--line2)}

/* ---------- Hero ---------- */
.hero{padding:44px 0 8px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:stretch}
.hero h1{font-size:42px;line-height:1.08;letter-spacing:-1.5px;margin:14px 0 12px}
.hero h1 .accent{color:var(--brand)}
.hero p.lead{font-size:16.5px;color:var(--ink-2);max-width:560px;margin:0 0 22px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-visual{position:relative}
.hero-visual .card{height:100%;padding:20px}

/* progress */
.progressbar{height:9px;background:var(--surface2);border:1px solid var(--line);border-radius:99px;overflow:hidden}
.progressbar>i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--brand),var(--cyan));border-radius:99px;transition:width .5s ease}
.statgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}
.stat{background:var(--surface2);border:1px solid var(--line);border-radius:12px;padding:12px}
.stat strong{display:block;font-size:20px;letter-spacing:-.4px}
.stat small{color:var(--muted);font-size:12px}

/* chips / badges */
.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:99px;font-size:12px;font-weight:700;background:var(--surface2);color:var(--ink-2);border:1px solid var(--line)}
.chip.brand{background:var(--brand-soft);color:var(--brand-2);border-color:var(--brand-line)}
.chip.ok{background:var(--ok-soft);color:var(--ok)}
.chip.bad{background:var(--bad-soft);color:var(--bad)}
.chip.warn{background:var(--warn-soft);color:var(--warn)}
.chip.review{background:var(--review-soft);color:var(--review)}
.chip.cyan{background:var(--cyan-soft);color:var(--cyan)}
.live-dot{width:7px;height:7px;border-radius:99px;background:var(--ok);display:inline-block;animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}

/* ---------- Exam cards ---------- */
.exam-card{position:relative;padding:20px;border-radius:var(--radius-lg);border:1px solid var(--line);background:var(--surface);transition:transform .18s,box-shadow .18s,border-color .18s;display:block}
.exam-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--brand-line)}
.exam-card .icon{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;background:var(--brand-soft);font-size:22px}
.exam-card h3{margin:14px 0 4px;font-size:17px}
.exam-card p{margin:0;color:var(--muted);font-size:13px}
.exam-card .go{margin-top:14px;color:var(--brand);font-weight:700;font-size:13px;display:inline-flex;align-items:center;gap:6px}
.exam-card.selected{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft),var(--shadow)}
.exam-card .badge-top{position:absolute;top:14px;right:14px}

/* ---------- Quick access cards ---------- */
.quick-card{display:flex;flex-direction:column;gap:10px;padding:20px;border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--line);transition:transform .18s,box-shadow .18s,border-color .18s}
.quick-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--brand-line)}
.quick-card .icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:20px}
.quick-card h3{margin:2px 0 0;font-size:15.5px}
.quick-card p{margin:0;color:var(--muted);font-size:12.5px;flex:1}
.quick-card .link{color:var(--brand);font-weight:700;font-size:13px}
.ic-brand{background:var(--brand-soft)}
.ic-cyan{background:var(--cyan-soft)}
.ic-ok{background:var(--ok-soft)}
.ic-warn{background:var(--warn-soft)}

/* ---------- Test cards ---------- */
.test-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:18px;display:flex;flex-direction:column;gap:12px;transition:transform .18s,box-shadow .18s,border-color .18s}
.test-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--brand-line)}
.test-card .t-head{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}
.test-card h4{margin:0;font-size:15.5px;letter-spacing:-.2px}
.test-card .meta{display:flex;flex-wrap:wrap;gap:7px}
.test-card .foot{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);flex-wrap:wrap}
.diff{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:700;color:var(--warn)}
.diff::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--warn)}
.diff.easy{color:var(--ok)} .diff.easy::before{background:var(--ok)}
.diff.medium{color:var(--warn)} .diff.medium::before{background:var(--warn)}
.diff.hard{color:var(--bad)} .diff.hard::before{background:var(--bad)}
.test-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.test-tab{padding:9px 16px;border-radius:99px;border:1px solid var(--line2);background:#fff;font-weight:600;font-size:13.5px;color:var(--ink-2);cursor:pointer;transition:all .15s}
.test-tab:hover{border-color:var(--brand);color:var(--brand)}
.test-tab.active{background:var(--brand);border-color:var(--brand);color:#fff}

/* ---------- Performance ---------- */
.perf-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:16px}
.score-ring{display:flex;align-items:center;gap:18px}
.ring{width:96px;height:96px;border-radius:50%;display:grid;place-items:center;position:relative;background:conic-gradient(var(--brand) var(--p,0%),var(--surface2) 0);flex-shrink:0}
.ring::before{content:"";position:absolute;inset:9px;border-radius:50%;background:#fff}
.ring span{position:relative;font-size:20px;font-weight:800}
.bars{display:flex;flex-direction:column;gap:12px}
.bar-row{display:grid;grid-template-columns:130px 1fr 52px;gap:10px;align-items:center;font-size:13px}
.bar-row .name{color:var(--ink-2);font-weight:600}
.bar-row .val{color:var(--muted);text-align:right;font-variant-numeric:tabular-nums}
.bar-track{height:10px;background:var(--surface2);border:1px solid var(--line);border-radius:99px;overflow:hidden}
.bar-track>i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--cyan));border-radius:99px}
.strength-list{display:flex;flex-direction:column;gap:10px}
.strength-item{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 12px;background:var(--surface2);border:1px solid var(--line);border-radius:11px;font-size:13.5px}
.strength-item b{font-weight:700}

/* ---------- Tables ---------- */
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table.simple{width:100%;border-collapse:collapse;font-size:13.5px}
table.simple th{text-align:left;font-size:11.5px;letter-spacing:.6px;text-transform:uppercase;color:var(--muted);padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
table.simple td{padding:12px;border-bottom:1px solid var(--line);vertical-align:middle;white-space:nowrap}
table.simple tr:last-child td{border-bottom:0}
table.simple td.nowrap{white-space:nowrap}

/* ---------- Footer ---------- */
.site-foot{border-top:1px solid var(--line);background:#fff;margin-top:40px}
.site-foot .wrap{padding-top:30px;padding-bottom:30px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:24px}
.foot-grid h4{margin:0 0 12px;font-size:13px;text-transform:uppercase;letter-spacing:.7px;color:var(--muted)}
.foot-grid a{display:block;padding:5px 0;color:var(--ink-2);font-size:14px}
.foot-grid a:hover{color:var(--brand)}
.foot-bottom{border-top:1px solid var(--line);margin-top:24px;padding-top:18px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:13px}

/* ---------- Exam interface ---------- */
.exam-shell{min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}
.exam-topbar{position:sticky;top:0;z-index:40;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm)}
.exam-topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:60px;padding-top:8px;padding-bottom:8px;flex-wrap:wrap}
.exam-id{display:flex;align-items:center;gap:12px;min-width:0}
.exam-id .mark{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--cyan));color:#fff;display:grid;place-items:center;font-weight:900;font-size:13px;flex-shrink:0}
.exam-id b{font-size:15px;display:block;line-height:1.25}
.exam-id small{color:var(--muted);font-size:12px;display:block}
.timerbox{display:flex;align-items:center;gap:10px;background:var(--brand-soft);border:1px solid var(--brand-line);padding:9px 14px;border-radius:12px;flex-shrink:0}
.timerbox.warn{background:var(--warn-soft);border-color:#f2ddb0}
.timerbox.crit{background:var(--bad-soft);border-color:#f5c2c7;animation:pulse 1.2s infinite}
.timerbox b{font-size:19px;font-variant-numeric:tabular-nums;letter-spacing:.5px}
.timerbox small{display:block;font-size:10px;letter-spacing:.8px;color:var(--muted);text-transform:uppercase;font-weight:700}
.lang-sel{border:1px solid var(--line2);background:#fff;border-radius:10px;padding:9px 12px;font-weight:600;font-size:13.5px;color:var(--ink);cursor:pointer}

.exam-main{flex:1;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px;align-items:start;padding:20px 0 28px}
.qcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow-sm)}
.qhead{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px;flex-wrap:wrap}
.qnum-tag{font-weight:800;color:var(--brand-2);font-size:13px;letter-spacing:.4px}
.qmarks{font-size:12px;color:var(--muted);font-weight:600}
.qtext{font-size:17.5px;line-height:1.6;margin:8px 0 22px}
.opts{display:grid;gap:11px}
.opt{display:flex;align-items:center;gap:13px;width:100%;text-align:left;background:#fff;border:1.5px solid var(--line2);border-radius:13px;padding:14px 16px;font-size:15.5px;cursor:pointer;transition:border-color .15s,background .15s;color:var(--ink)}
.opt:hover{border-color:var(--brand);background:var(--brand-soft)}
.opt .key{width:30px;height:30px;border-radius:9px;border:1px solid var(--line2);display:grid;place-items:center;font-weight:800;font-size:13px;color:var(--ink-2);flex-shrink:0;background:var(--surface2)}
.opt.selected{border-color:var(--brand);background:var(--brand-soft)}
.opt.selected .key{background:var(--brand);border-color:var(--brand);color:#fff}
.opt:disabled{cursor:default;opacity:.92}
.exam-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px;padding-top:20px;border-top:1px solid var(--line)}
.exam-actions .spacer{flex:1}

.side-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:18px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:14px}
.candidate-line{display:flex;justify-content:space-between;font-size:12.5px;color:var(--muted);padding-bottom:12px;border-bottom:1px solid var(--line)}
.legend{display:grid;grid-template-columns:repeat(2,1fr);gap:7px;font-size:12px;color:var(--ink-2)}
.legend .dot{width:12px;height:12px;border-radius:4px;display:inline-block;vertical-align:-1px;margin-right:7px}
.dot-ans{background:var(--ok)}
.dot-not{background:#fff;border:1.5px solid var(--line2)}
.dot-mark{background:var(--review)}
.dot-ansmark{background:linear-gradient(135deg,var(--review) 50%,var(--ok) 50%)}
.sect-chips{display:flex;flex-direction:column;gap:8px}
.sect-chip{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:10px 12px;border:1.5px solid var(--line);border-radius:11px;background:#fff;cursor:pointer;font-size:13px;font-weight:600;color:var(--ink-2);transition:all .15s;text-align:left}
.sect-chip:hover{border-color:var(--brand-line);background:var(--brand-soft)}
.sect-chip.active{border-color:var(--brand);color:var(--brand-2);background:var(--brand-soft)}
.sect-chip.locked{opacity:.6;cursor:default}
.sect-chip .prog{font-size:11px;color:var(--muted);font-weight:600}
.palette{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}
.pnum{height:38px;border-radius:9px;border:1.5px solid var(--line2);background:#fff;font-weight:700;font-size:13px;color:var(--ink-2);cursor:pointer;display:grid;place-items:center;transition:transform .1s}
.pnum:hover{transform:scale(1.06)}
.pnum.answered{background:var(--ok);border-color:var(--ok);color:#fff}
.pnum.marked{background:var(--review);border-color:var(--review);color:#fff}
.pnum.ansmark{background:linear-gradient(135deg,var(--review) 50%,var(--ok) 50%);border-color:var(--review);color:#fff}
.pnum.current{outline:3px solid var(--brand);outline-offset:1.5px;border-color:var(--brand)}
.palette-foot{display:grid;gap:9px}

/* mobile exam bar */
.mobile-exam-bar{display:none;position:sticky;bottom:0;z-index:40;background:#fff;border-top:1px solid var(--line);padding:10px 16px;box-shadow:0 -4px 16px rgba(15,31,56,.07)}
.mobile-exam-bar .row{display:flex;gap:9px}
.mobile-exam-bar .btn{flex:1}

/* ---------- Result page ---------- */
.score-hero{background:linear-gradient(135deg,#12224a 0%,#1e3a8a 55%,#155e8f 100%);border-radius:var(--radius-lg);color:#fff;padding:30px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center}
.score-hero h2{margin:0 0 4px;font-size:20px;opacity:.9}
.score-big{font-size:46px;font-weight:900;letter-spacing:-1.5px;line-height:1}
.score-big small{font-size:19px;font-weight:700;opacity:.75}
.score-hero .ring{background:conic-gradient(#38e5b0 var(--p,0%),rgba(255,255,255,.16) 0)}
.score-hero .ring::before{background:#12224a}
.score-hero .ring span{color:#38e5b0}
.res-cards{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-top:16px}
.res-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.res-card b{display:block;font-size:22px;letter-spacing:-.4px}
.res-card.ok b{color:var(--ok)}
.res-card.bad b{color:var(--bad)}
.res-card small{color:var(--muted);font-size:12px;font-weight:600}
.res-card.warn b{color:var(--warn)}
.res-card.brand b{color:var(--brand)}
.section-score-row{display:grid;grid-template-columns:150px 1fr 130px;gap:12px;align-items:center;padding:13px 0;border-bottom:1px solid var(--line);font-size:13.5px}
.section-score-row:last-child{border-bottom:0}
.section-score-row .name{font-weight:700}
.section-score-row .score{font-variant-numeric:tabular-nums;color:var(--ink-2);text-align:right}
.filter-pills{display:flex;gap:8px;flex-wrap:wrap}
.filter-pill{padding:9px 15px;border-radius:99px;border:1px solid var(--line2);background:#fff;font-size:13px;font-weight:600;color:var(--ink-2);cursor:pointer;transition:all .15s}
.filter-pill:hover{border-color:var(--brand);color:var(--brand)}
.filter-pill.active{background:var(--ink);border-color:var(--ink);color:#fff}
.review-item{border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin-bottom:12px;background:#fff}
.review-item .r-head{display:flex;justify-content:space-between;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:8px}
.review-item .r-q{font-size:15px;font-weight:600;margin:6px 0 12px;line-height:1.55}
.review-item .opts-review{display:grid;gap:8px}
.rev-opt{display:flex;gap:10px;align-items:center;padding:10px 13px;border:1px solid var(--line);border-radius:10px;font-size:14px}
.rev-opt .key{width:26px;height:26px;border-radius:7px;border:1px solid var(--line);display:grid;place-items:center;font-size:12px;font-weight:800;color:var(--muted);flex-shrink:0;background:var(--surface2)}
.rev-opt.correct{border-color:#9adbbf;background:var(--ok-soft)}
.rev-opt.correct .key{background:var(--ok);border-color:var(--ok);color:#fff}
.rev-opt.wrong{border-color:#f0b5ba;background:var(--bad-soft)}
.rev-opt.wrong .key{background:var(--bad);border-color:var(--bad);color:#fff}
.solution-box{margin-top:12px;padding:13px 15px;border-radius:11px;background:var(--brand-soft);border:1px solid var(--brand-line);font-size:13.5px;color:#243b66}
.solution-box b{display:block;margin-bottom:4px;color:var(--brand-2)}
.filterbar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}

/* ---------- Forms / misc ---------- */
.field{display:grid;gap:6px}
.field label{font-size:13px;font-weight:700;color:var(--ink-2)}
.field input,.field select,.field textarea{padding:11px 13px;border:1px solid var(--line2);border-radius:11px;font:inherit;font-size:14.5px;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--brand-soft);border-color:var(--brand)}
.notice{padding:13px 16px;border-radius:12px;border:1px solid var(--brand-line);background:var(--brand-soft);color:#243b66;font-size:13.5px}
.notice.ok{border-color:#bfe8d4;background:var(--ok-soft);color:#0d6b44}
.notice.warn{border-color:#f2ddb0;background:var(--warn-soft);color:#8a5b06}
.divider{height:1px;background:var(--line);margin:20px 0}
.hint{font-size:12.5px;color:var(--muted)}
.page-404{min-height:70vh;display:grid;place-items:center;text-align:center;padding:40px 0}

/* ---------- Responsive ---------- */
@media(max-width:1100px){
  .g5{grid-template-columns:repeat(3,1fr)}
  .res-cards{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:1024px){
  .hero-grid{grid-template-columns:1fr}
  .perf-grid{grid-template-columns:1fr}
  .exam-main{grid-template-columns:minmax(0,1fr) 270px;gap:14px}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:860px){
  .main-nav{display:none}
  .hamburger{display:block}
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .exam-main{grid-template-columns:1fr}
  .side-panel{order:2}
  .qcard{order:1}
  .mobile-exam-bar{display:block}
  .desktop-actions{display:none}
  .palette{grid-template-columns:repeat(8,1fr)}
  .score-hero{grid-template-columns:1fr;text-align:center}
  .score-hero .ring{margin:0 auto}
  .section-score-row{grid-template-columns:110px 1fr 90px}
}
@media(max-width:560px){
  .wrap{padding:0 16px}
  .hero{padding-top:26px}
  .hero h1{font-size:30px;letter-spacing:-.8px}
  .hero p.lead{font-size:15px}
  .section{padding:28px 0}
  .section-head h2{font-size:20px}
  .g2,.g3,.g4,.g5{grid-template-columns:1fr}
  .g5{grid-template-columns:1fr 1fr}
  .statgrid{grid-template-columns:repeat(3,1fr);gap:8px}
  .stat strong{font-size:17px}
  .res-cards{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr}
  .qcard{padding:18px 14px}
  .qtext{font-size:16px}
  .opt{padding:12px 13px;font-size:14.5px}
  .palette{grid-template-columns:repeat(5,1fr);gap:7px}
  .pnum{height:36px}
  .bar-row{grid-template-columns:96px 1fr 46px}
  .exam-topbar .wrap{gap:8px}
  .exam-id small{display:none}
  .timerbox{padding:7px 11px}
  .timerbox b{font-size:16px}
  .section-score-row{grid-template-columns:96px 1fr;position:relative}
  .section-score-row .score{grid-column:1/-1;text-align:left;padding-left:2px}
  .test-card .foot{flex-direction:column;align-items:stretch}
  .test-card .foot .btn{width:100%}
}
@media(max-width:380px){
  .logo{font-size:17px}
  .g5{grid-template-columns:1fr}
  .res-cards{grid-template-columns:1fr 1fr}
  .hero h1{font-size:27px}
}