/* Exam player (/exam/). Layout and interactions from docs/DESIGN-SYSTEM.md §9, modelled on the
   Cambridge computer-based exam. Loaded after site.css, whose tokens, buttons and fonts it reuses.
   Plain, high contrast, no decoration. Text size steps 16 / 18 / 20 px scale everything (rem). */

:root{--x-box:var(--field-line,#8a91a8);--x-acc:var(--b2);--x-acc-ink:var(--b2-ink);--x-acc-soft:var(--b2-soft);--x-flag:var(--err-ink,#b8323a);--x-ok:var(--ok-ink,#0b7a4f);--x-err:var(--err-ink,#b8323a);--x-warn-bg:#fff4d6;--x-err-bg:#fdecec;--x-err-ink:#8c1d23}
html[data-size="1"]{font-size:18px}
html[data-size="2"]{font-size:20px}
html{scroll-padding-top:0}
body.x{background:var(--paper);font-size:1rem;line-height:1.6;--x-acc:var(--b2);--x-acc-ink:var(--b2-ink);--x-acc-soft:var(--b2-soft)}
body.x[data-exam="c1"]{--x-acc:var(--c1);--x-acc-ink:var(--c1-ink);--x-acc-soft:var(--c1-soft)}
body.x h1,body.x h2,body.x h3{text-wrap:balance}
.x [hidden]{display:none!important}
.x-sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap}
.x-skip{position:absolute;left:-9999px;top:8px;z-index:999;background:var(--paper);padding:10px 14px;border-radius:10px;border:2px solid var(--ink);font-weight:600}
.x-skip:focus{left:8px}
.x-noscript{max-width:36rem;margin:15vh auto;padding:24px;display:grid;gap:12px}
:where(.x) button{font:inherit;color:inherit}
.x .btn svg{flex:0 0 auto}
.x .btn[disabled],.xbtn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.x .btn:hover{transform:none}

/* ---------- boot / spinner ---------- */
.x-boot{min-height:100vh;min-height:100dvh;display:grid;place-content:center;justify-items:center;gap:12px;color:var(--ink-2)}
.x-spin{width:28px;height:28px;border:3px solid var(--line-2);border-top-color:var(--ink);border-radius:50%;animation:xspin .8s linear infinite}
.x-spin.sm{width:16px;height:16px;border-width:2px;border-color:rgba(255,255,255,.4);border-top-color:currentColor;display:inline-block;vertical-align:-3px;margin-right:8px}
@keyframes xspin{to{transform:rotate(360deg)}}
@keyframes xpulse{50%{opacity:.35}}

/* ---------- top bar ---------- */
.xbar{height:56px;display:flex;align-items:center;gap:12px;padding:0 max(16px,env(safe-area-inset-right)) 0 max(16px,env(safe-area-inset-left));border-bottom:1px solid var(--line-2);background:var(--paper);position:relative;z-index:30}
.xbar-home{display:grid;place-items:center;border-radius:8px;flex:0 0 auto}
.xlogo{display:block}
.xbar-title{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:.92rem;color:var(--ink-2)}
.xbar-title b{color:var(--ink);font-weight:700}
.xbar-r{display:flex;align-items:center;gap:6px;flex:0 0 auto}
.xtime{display:flex;align-items:baseline;gap:8px;padding:5px 12px;border:1px solid var(--line-2);border-radius:8px;font-family:var(--f-mono);white-space:nowrap}
.xtime-l{font-size:.68rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.xtime b{font-weight:600;font-variant-numeric:tabular-nums;min-width:4ch;text-align:right}
.xtime.warn{background:var(--x-warn-bg);border-color:#e9c46a}
.xtime.red{background:var(--x-err);border-color:var(--x-err);color:#fff}
.xtime.red .xtime-l{color:#fff}
body.x-hide-time .xf:not(.is-spk) .xtime{display:none}
.xic{width:40px;height:40px;display:grid;place-items:center;border:1px solid transparent;border-radius:10px;background:none;cursor:pointer;color:var(--ink)}
.xic:hover,.xic[aria-expanded="true"]{background:var(--bg);border-color:var(--line)}

/* ---------- frame ---------- */
.xf{height:100vh;height:100dvh;display:grid;grid-template-rows:auto auto auto minmax(0,1fr) auto;grid-template-columns:minmax(0,1fr);background:var(--paper);overflow:hidden}
.xf>.xbar{grid-row:1}.xf>.xinstr{grid-row:2}.xf>.xlisbar{grid-row:3}.xf>.xwork-wrap{grid-row:4}.xf>.xnav{grid-row:5}
.xinstr{background:var(--bg);border-bottom:1px solid var(--line);padding:10px max(20px,env(safe-area-inset-left));display:grid;gap:2px}
.xinstr-h{font-size:.95rem}
.xinstr-h b{font-weight:700}
.xinstr-r{color:var(--ink-2);font-size:.93rem;max-width:72rem}
.xinstr-more{display:none;min-height:28px;padding:4px 0;border:0;background:none;font-size:.82rem;font-weight:600;text-decoration:underline;cursor:pointer}
.xwork-wrap{position:relative;min-height:0}
.xwork{position:absolute;inset:0;overflow:hidden;outline:none}
.xview{position:absolute;inset:0}
.xview-single{overflow:auto;overscroll-behavior:contain}
.xcol{max-width:50rem;margin:0 auto;padding:28px 24px 120px}
.xview-single[data-type^="lis_"] .xcol{max-width:56rem}
.xview-single[data-type="lis_multiple_matching"] .xcol,.xview-single[data-type="lis_dual_matching"] .xcol{max-width:72rem}

/* prev / next / flag, bottom right above the navigator */
.xact{position:absolute;right:max(16px,env(safe-area-inset-right));bottom:14px;display:flex;gap:8px;z-index:6}
.xbtn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:44px;padding:0 14px;border:1px solid var(--x-box);border-radius:999px;background:var(--paper);font-weight:600;font-size:.88rem;cursor:pointer;box-shadow:var(--shadow)}
.xbtn:hover{border-color:var(--ink)}
.xbtn.xarrow{width:44px;padding:0;background:var(--x-acc-ink);border-color:var(--x-acc-ink);color:#fff}
.xbtn.xarrow:hover{background:var(--ink);border-color:var(--ink)}
.xflag[aria-pressed="true"]{color:var(--x-flag);border-color:var(--x-flag)}
.xflag[aria-pressed="true"] svg path:last-child{fill:currentColor}
.xbtn-sm{height:34px;padding:0 10px;font-size:.82rem;box-shadow:none}

/* ---------- bottom navigator ---------- */
.xnav{display:flex;align-items:stretch;border-top:1px solid var(--line-2);background:var(--paper);min-height:62px;padding-bottom:env(safe-area-inset-bottom);position:relative;z-index:20}
.xnav-wrap{position:relative;flex:1;min-width:0;display:flex}
.xnav-list{flex:1;min-width:0;display:flex;overflow-x:auto;overflow-y:hidden;scrollbar-width:none;margin:0;padding:0;list-style:none;scroll-behavior:smooth}
.xnav-list::-webkit-scrollbar{display:none}
.xnav-more{display:none;position:absolute;top:0;bottom:0;z-index:2;width:36px;border:0;padding:0;place-items:center;cursor:pointer;color:var(--ink)}
.xnav-more.l{left:0;background:linear-gradient(90deg,var(--paper) 55%,rgba(255,255,255,0))}
.xnav-more.r{right:0;background:linear-gradient(270deg,var(--paper) 55%,rgba(255,255,255,0))}
.xnav.can-l .xnav-more.l,.xnav.can-r .xnav-more.r{display:grid}
.xnav-part{display:flex;align-items:stretch;flex:0 0 auto;border-right:1px solid var(--line)}
.xnav-tab{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:0;padding:6px 14px;min-width:84px;border:0;background:none;cursor:pointer;text-align:left;line-height:1.3}
.xnav-tab b{font-size:.9rem;font-weight:700}
.xnav-cnt{font-family:var(--f-mono);font-size:.75rem;color:var(--muted);white-space:nowrap}
.xnav-tab:hover{background:var(--bg)}
.xnav-part.on{background:var(--x-acc-soft)}
.xnav-part.on .xnav-tab{min-width:0;padding-right:8px}
.xnav-part.on .xnav-cnt{display:none}
.xnav-qs{display:none;align-items:center;gap:4px;padding:12px 12px 4px 4px}
.xnav-part.on .xnav-qs{display:flex}
.xq{position:relative;min-width:34px;height:34px;padding:0 4px;border:0;border-top:3px solid #c3c9d6;border-radius:0;background:none;font-family:var(--f-mono);font-size:.84rem;font-weight:600;cursor:pointer}
.xq:hover{background:rgba(255,255,255,.7)}
.xq.ans{border-top-color:var(--ink)}
.xq.cur{background:var(--ink);color:#fff;border-radius:0 0 6px 6px}
.xq.flag::before{content:"";position:absolute;left:50%;top:-14px;width:10px;height:9px;transform:translateX(-35%);background:var(--x-flag);clip-path:polygon(0 0,100% 0,70% 50%,100% 100%,0 100%)}
.xnav-review{flex:0 0 auto;width:64px;border:0;border-left:1px solid var(--line-2);background:var(--ink);color:#fff;display:grid;place-items:center;cursor:pointer}
.xnav-review:hover{background:var(--navy)}
.xnav-review[aria-pressed="true"]{background:var(--x-acc-ink)}
.xnav-steps .xnav-part{align-items:center}
.xnav-steps .xnav-tab{cursor:default}
.xnav-steps .xnav-tab:hover{background:none}
.xnav-steps .xnav-part.on .xnav-cnt,.xnav-steps .xnav-cnt{display:block}
.xnav-steps .xnav-part.done .xnav-tab b::after{content:" ✓";color:var(--x-ok)}

/* ---------- reading text and gaps ---------- */
.xtext{line-height:1.75}
.xtext p{margin:0 0 1em}
.xtitle{font-family:var(--f-body);font-size:1.22rem;font-weight:700;letter-spacing:0;line-height:1.35;margin:0 0 .6em}
.xsubtitle{color:var(--ink-2);font-style:italic;margin:-.2em 0 1.1em}
.xg{display:inline-flex;align-items:center;gap:6px;vertical-align:baseline;min-height:1.9em;margin:1px 2px;padding:0 8px 0 4px;border:1px solid var(--x-box);border-radius:6px;background:var(--paper);line-height:1.4;max-width:100%}
.xg-n{font-family:var(--f-mono);font-size:.76rem;font-weight:600;min-width:1.6em;padding:1px 4px;text-align:center;border-radius:4px;background:var(--bg);color:var(--ink);flex:0 0 auto}
.xg-mc{min-width:9em;cursor:pointer;text-align:left}
.xg-mc .xg-v{flex:1;min-height:1em}
.xg-mc.filled .xg-v,.xg-type input{font-weight:600}
.xg:hover{border-color:var(--ink)}
.xg:focus-within,.xg-mc:focus-visible,.xg-mc[aria-expanded="true"],.xg.is-cur{border-color:var(--x-acc);box-shadow:0 0 0 1px var(--x-acc);outline:none}
.xg-mc:focus-visible{box-shadow:0 0 0 2px var(--x-acc)}
.xg-in{border:0;outline:0;background:transparent;font:inherit;color:var(--ink);padding:2px 0;min-width:6ch;max-width:100%}
.xg-ex{border-style:dashed;background:var(--bg);color:var(--ink-2)}
.xg-ex .xg-n{background:var(--paper)}
.is-flag>.xg-n,.xdrop.is-flag .xg-n{background:var(--x-flag);color:#fff}
.xtext-wf p{padding-right:9.5rem}
.xstem{float:right;clear:right;width:9rem;margin-right:-9.5rem;text-align:right;font-family:var(--f-mono);font-weight:600;font-size:.88rem;letter-spacing:.04em;line-height:inherit}

/* key word transformations */
.xkwt{padding:16px 12px 18px;border-bottom:1px solid var(--line)}
.xkwt p{margin:0 0 .35em}
.xkwt-n{display:flex;align-items:center;justify-content:space-between;gap:10px}
.xkwt.is-ex{color:var(--ink-2)}
.xkwt.is-ex .xkwt-n{font-family:var(--f-mono);font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.xkwt-key{margin:.4em 0 .5em!important}
.xkey{display:inline-block;padding:1px 12px;border:2px solid var(--ink);border-radius:3px;font-family:var(--f-mono);font-weight:600;letter-spacing:.08em}
.xkwt-s2{line-height:2.2}
.xg-kwt{min-width:12em}
.xkwt-meta{font-family:var(--f-mono);font-size:.78rem;color:var(--muted)}
.xwc.over{color:var(--x-err);font-weight:600}

/* numbered question blocks */
.xnum{display:inline-grid;place-items:center;min-width:2em;height:2em;padding:0 4px;border-radius:6px;background:var(--ink);color:#fff;font-family:var(--f-mono);font-size:.8rem;font-weight:600;flex:0 0 auto;line-height:1}
.is-cur .xnum,.is-cur>.xg-n{background:var(--x-acc-ink);color:#fff}
.xmc,.xmatch,.xkwt,.xsc,.xspeaker{transition:box-shadow .15s}
.xmc.is-cur,.xmatch.is-cur,.xkwt.is-cur,.xsc.is-cur,.xspeaker.is-cur{box-shadow:inset 3px 0 0 var(--x-acc)}
.xqflag{width:34px;height:34px;display:grid;place-items:center;flex:0 0 auto;border:1px solid transparent;border-radius:8px;background:none;color:var(--muted);cursor:pointer}
.xqflag:hover{background:var(--bg);color:var(--ink)}
.xqflag[aria-pressed="true"]{color:var(--x-flag)}
.xqflag[aria-pressed="true"] svg path:last-child{fill:currentColor}
.xmc{position:relative;border:0;margin:0;padding:14px 46px 18px 12px;border-bottom:1px solid var(--line);min-width:0}
.xmc>.xqflag{position:absolute;right:4px;top:12px}
.xmc legend{float:left;width:100%;display:flex;gap:12px;align-items:flex-start;padding:0;margin:0 0 10px;font-weight:600;line-height:1.5}
.xmc legend+*{clear:both}
.xmc-stem{display:grid;gap:4px}
.xctx{display:block;color:var(--ink-2);font-weight:400;font-style:italic}
.xopt{display:flex;gap:12px;align-items:flex-start;padding:9px 12px;margin:6px 0 0;border:1px solid var(--x-box);border-radius:10px;cursor:pointer;line-height:1.5;clear:both}
.xopt:hover{border-color:var(--x-box)}
.xopt:has(input:checked){border-color:var(--x-acc-ink);background:var(--x-acc-soft);box-shadow:inset 0 0 0 1px var(--x-acc-ink)}
.xopt input{width:1.1em;height:1.1em;margin:.25em 0 0;flex:0 0 auto;accent-color:var(--x-acc-ink)}
.xqs{display:grid;gap:4px}
.xqhead{font-weight:600;margin:0 0 6px}
.xmatch{display:grid;grid-template-columns:auto minmax(0,1fr) auto auto;gap:12px;align-items:center;padding:10px 4px 10px 12px;border-bottom:1px solid var(--line)}
.xmatch-t{margin:0}
.xsel{font:inherit;font-weight:600;min-width:4.6em;padding:6px 10px;border:1px solid var(--x-box);border-radius:6px;background:var(--paper);color:var(--ink);cursor:pointer}
.xsel:focus{border-color:var(--x-acc);box-shadow:0 0 0 1px var(--x-acc);outline:none}
.xsel:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.xsect{margin:0 0 1.6em}
.xsect-h{display:flex;align-items:center;gap:10px;font-family:var(--f-body);font-size:1.02rem;font-weight:700;letter-spacing:0;line-height:1.35;margin:0 0 .5em}
.xsect-h .xlet{display:inline-grid;place-items:center;width:1.9em;height:1.9em;border:2px solid var(--ink);border-radius:6px;flex:0 0 auto}
.xlet{font-family:var(--f-mono);font-weight:700;font-size:.86rem}

/* ---------- split pane ---------- */
.xsplit{position:absolute;inset:0;display:grid;grid-template-columns:minmax(0,var(--split,50%)) 14px minmax(0,1fr);grid-template-rows:minmax(0,1fr)}
.xtabs{display:none}
.xpane{min-height:0;overflow:auto;overscroll-behavior:contain;padding:24px 28px 120px;outline:none}
.xpane-l{grid-column:1;grid-row:1}
.xdiv{grid-column:2;grid-row:1;position:relative;display:grid;place-items:center;background:var(--bg);border-left:1px solid var(--line);border-right:1px solid var(--line);cursor:col-resize;touch-action:none}
.xdiv::before{content:"";position:absolute;top:0;bottom:0;left:-6px;right:-6px;z-index:1}
.xdiv span{display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--paper);border:1px solid var(--line-2);font-size:.78rem;color:var(--ink-2)}
.xdiv:hover span,.xdiv:focus-visible span{border-color:var(--ink);color:var(--ink)}
.xdiv:focus-visible{outline-offset:-2px}
.xpane-r{grid-column:3;grid-row:1}
body.x-resizing{cursor:col-resize;user-select:none}
.xview-split[data-type^="writing"] .xpane-r{display:flex;flex-direction:column}

/* ---------- drag and drop (gapped text, listening matching) ---------- */
.xdrop{display:inline-flex;align-items:flex-start;gap:8px;min-width:11em;max-width:100%;min-height:2em;margin:2px;padding:3px 10px 3px 4px;vertical-align:middle;border:2px dashed var(--x-box);border-radius:8px;background:var(--paper);cursor:pointer;line-height:1.5;text-align:left}
.xdrop-block{display:flex;width:100%;min-height:4.6em;margin:4px 0 16px}
.xdrop:hover{border-color:var(--ink)}
.xdrop.filled{border-style:solid;border-color:var(--ink);background:var(--x-acc-soft)}
.xdrop.armed:not(.filled){border-color:var(--x-acc-ink);background:var(--x-acc-soft)}
.xdrop.xdrop-over{border-color:var(--x-acc-ink);border-style:solid;box-shadow:0 0 0 3px var(--x-acc-soft)}
.xdrop:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.xdrop.is-cur{border-color:var(--x-acc-ink)}
.xdrop-chip{display:flex;gap:8px;cursor:grab;flex:1;min-width:0;-webkit-user-select:none;user-select:none}
.xdrop-ph{color:var(--x-acc-ink);font-size:.82rem;font-weight:600;align-self:center}
.xopts{display:grid;gap:8px;min-height:3rem;border-radius:10px}
.xopts.empty::after{content:"All options are placed. Drag one back here to remove it.";color:var(--muted);font-size:.86rem;padding:10px;border:1px dashed var(--line-2);border-radius:10px}
.xopts.xdrop-over{box-shadow:0 0 0 3px var(--x-acc-soft);background:var(--bg)}
.xcard{display:flex;gap:10px;width:100%;padding:11px 14px;border:1px solid var(--x-box);border-radius:10px;background:var(--paper);text-align:left;line-height:1.55;cursor:grab}
.xcard:hover{border-color:var(--ink)}
.xcard[aria-pressed="true"]{border-color:var(--x-acc-ink);background:var(--x-acc-soft);box-shadow:inset 0 0 0 2px var(--x-acc-ink)}
.xghost{position:fixed;left:0;top:0;z-index:1000;pointer-events:none;opacity:.95;box-shadow:0 34px 70px -34px rgba(20,24,44,.45);background:var(--paper)}
.x-dragsrc{opacity:.35}
body.x-dragging,body.x-dragging *{cursor:grabbing!important;user-select:none}
.xpick{position:fixed;z-index:150;width:min(30rem,calc(100vw - 16px));max-height:min(60vh,28rem);overflow:auto;padding:8px;background:var(--paper);border:1px solid var(--line-2);border-radius:12px;box-shadow:0 34px 70px -34px rgba(20,24,44,.45)}
.xpick-h{font-weight:700;padding:6px 8px 8px}
.xpick-list{display:grid;gap:2px}
.xpick-o{display:flex;gap:10px;width:100%;padding:10px;border:0;border-radius:8px;background:none;text-align:left;font-size:.92rem;line-height:1.45;cursor:pointer}
.xpick-o b{font-family:var(--f-mono);min-width:1.4em}
.xpick-o:hover,.xpick-o:focus-visible{background:var(--bg)}
.xpick-o[aria-pressed="true"]{background:var(--x-acc-soft);box-shadow:inset 0 0 0 1px var(--x-acc-ink)}
.xpick-clear{margin:6px 0 2px;width:100%;padding:10px;border:1px solid var(--line-2);border-radius:8px;background:var(--paper);font-weight:600;cursor:pointer}
.xpick-empty{padding:10px;color:var(--muted);font-size:.9rem}

/* multiple-choice cloze option strip: dark, ✕ first, words only */
.xstrip{position:fixed;z-index:150;display:flex;flex-wrap:wrap;gap:2px;max-width:calc(100vw - 16px);padding:4px;background:var(--ink);border-radius:10px;box-shadow:0 34px 70px -34px rgba(20,24,44,.45)}
.xstrip::after{content:"";position:absolute;left:var(--ax,50%);bottom:-6px;width:12px;height:12px;background:var(--ink);transform:translateX(-50%) rotate(45deg)}
.xstrip[data-side="below"]::after{top:-6px;bottom:auto}
.xstrip button{min-height:40px;padding:6px 14px;border:0;border-radius:7px;background:transparent;color:#fff;font-weight:600;cursor:pointer;position:relative;z-index:1}
.xstrip button:hover{background:rgba(255,255,255,.16)}
.xstrip button:focus-visible{outline:2px solid #fff;outline-offset:-2px;border-radius:7px}
.xstrip .xstrip-o[aria-pressed="true"]{background:var(--paper);color:var(--ink)}
.xstrip-x{opacity:.85;padding:6px 12px!important}

/* ---------- listening ---------- */
.xlisbar{display:flex;align-items:center;flex-wrap:wrap;gap:8px 16px;padding:8px max(20px,env(safe-area-inset-left));border-bottom:1px solid var(--line);background:var(--paper);font-size:.9rem}
.xlis-status{display:flex;align-items:center;gap:8px;flex:1 1 18rem;min-width:0}
.xlis-status svg{color:var(--x-acc-ink);flex:0 0 auto}
.xlis-prog{flex:1 1 10rem;height:6px;border-radius:999px;background:var(--line);overflow:hidden;min-width:6rem}
.xlis-prog i{display:block;height:100%;width:0;background:var(--x-acc-ink);transition:width .3s linear}
.xlis-ctrls{display:flex;gap:6px}
.xlisbar.dev{background:var(--x-warn-bg)}
.xlisbar.trouble{background:var(--x-err-bg)}
.xvol{display:flex;align-items:center;gap:8px;font-size:.86rem;color:var(--ink-2)}
.xvol input{width:110px;height:28px;margin:0;accent-color:var(--x-acc-ink);cursor:pointer}
.xlis-over{position:absolute;inset:0;z-index:25;display:grid;place-items:center;padding:16px;background:rgba(255,255,255,.88);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}
.xlis-over-c{max-width:31rem;display:grid;gap:12px;padding:28px;background:var(--paper);border:1px solid var(--line-2);border-radius:18px;box-shadow:var(--shadow)}
.xlis-over-c .btn{justify-self:start}
.xextract{margin:0 0 26px}
.xextract-h{font-family:var(--f-body);font-size:1.05rem;font-weight:700;letter-spacing:0;margin:0 0 8px}
.xsc{display:flex;align-items:flex-start;gap:8px;padding:6px 0 6px 12px;line-height:2.1;border-bottom:1px solid var(--line)}
.xsc>p{flex:1;margin:0}
.xboard{margin:0 0 30px}
.xboard-g{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;align-items:start}
.xboard-slots{display:grid;gap:4px}
.xspeaker{display:grid;grid-template-columns:auto 5.4em minmax(0,1fr) auto;gap:10px;align-items:center;padding:6px 4px 6px 12px}
.xspeaker-l{font-weight:600}
.xspeaker .xdrop{display:flex;width:100%;min-height:3.2em;margin:0}
.xboard-opts{position:sticky;top:0}

/* ---------- writing ---------- */
.xtask-lead{margin:0 0 12px;color:var(--ink-2)}
.xtask-box{display:grid;gap:12px;padding:18px 20px;border:2px solid var(--ink);border-radius:4px}
.xtask-box p{margin:0}
.xtask-q{font-weight:700}
.xnotes-h{font-weight:700}
.xnotes ol,.xnotes ul{margin:4px 0 0;padding-left:1.4em;display:grid;gap:2px}
.xquotes li{font-style:italic}
.xedwrap{flex:1;display:flex;flex-direction:column;min-height:0}
.xed{flex:1;display:flex;flex-direction:column;gap:8px;min-height:0}
.xed-label{font-weight:700}
.xed-hint,.xed-note{font-size:.86rem;color:var(--muted);margin:0}
.xta{flex:1;width:100%;min-height:16rem;resize:none;padding:14px;border:1px solid var(--x-box);border-radius:6px;background:var(--paper);color:var(--ink);font:inherit;line-height:1.65}
.xta:focus{border-color:var(--x-acc);box-shadow:0 0 0 1px var(--x-acc);outline:none}
.xwc-line{font-family:var(--f-mono);font-size:.84rem;color:var(--ink-2);margin:0}
.xwc-line.long b{color:var(--x-err)}
.xchoices{border:0;margin:0;padding:0;display:grid;gap:10px}
.xchoice{display:flex;gap:12px;align-items:flex-start;padding:14px;border:1px solid var(--x-box);border-radius:10px;cursor:pointer}
.xchoice:hover{border-color:var(--x-box)}
.xchoice:has(input:checked){border-color:var(--x-acc-ink);background:var(--x-acc-soft);box-shadow:inset 0 0 0 1px var(--x-acc-ink)}
.xchoice input{width:1.1em;height:1.1em;margin:.35em 0 0;accent-color:var(--x-acc-ink);flex:0 0 auto}
.xchoice-b{display:grid;gap:6px;min-width:0}
.xchoice-h{display:flex;align-items:center;gap:10px}
.xchoice-p .xpara{display:block;margin:0 0 .5em}
.xed-empty{flex:1;display:grid;place-content:center;gap:6px;padding:24px;text-align:center;border:2px dashed var(--line-2);border-radius:10px;color:var(--ink-2)}

/* ---------- speaking ---------- */
.xspk{max-width:58rem;margin:0 auto;padding:24px 24px 40px;display:grid;gap:18px;align-content:start}
.xview-single .xspk{padding-bottom:40px}
.xwork>.xspk{position:absolute;inset:0;overflow:auto;max-width:none;padding-left:max(24px,calc((100% - 56rem)/2));padding-right:max(24px,calc((100% - 56rem)/2))}
.xspk-head{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;align-items:baseline}
.xspk-part{font-family:var(--f-mono);font-size:.74rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--x-acc-ink)}
.xspk-step{font-weight:700}
.xexaminer{padding:14px 18px;border-left:4px solid var(--x-acc);border-radius:0 12px 12px 0;background:var(--bg)}
.xexaminer-h{font-family:var(--f-mono);font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.xexaminer-t{font-size:1.15rem;font-weight:600;line-height:1.45}
.xlt{display:grid;gap:12px}
.xlt-q p{font-weight:700;font-size:1.08rem;margin:0}
.xlt-tip{color:var(--ink-2);font-size:.9rem;margin:6px 0 0}
.xphotos{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.xphotos.n3{grid-template-columns:repeat(3,minmax(0,1fr))}
.xphoto{position:relative;margin:0;aspect-ratio:4/3;border-radius:10px;overflow:hidden;background:var(--bg)}
.xphoto img{display:block;width:100%;height:100%;object-fit:cover}
.xphoto-ph{width:100%;height:100%;display:grid;place-items:center;padding:36px 14px 14px;text-align:center;border:2px dashed var(--line-2);border-radius:10px;color:var(--ink-2);font-size:.9rem;line-height:1.4}
.xphoto-l{position:absolute;left:8px;top:8px;padding:1px 8px;border-radius:6px;background:var(--ink);color:#fff;font-family:var(--f-mono);font-size:.78rem;font-weight:700}
.xmind{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-template-areas:"p1 . p2" "p3 c p4" ". p5 .";gap:12px;align-items:center}
.xmind-c{grid-area:c;padding:16px;border:2px solid var(--ink);border-radius:14px;text-align:center;font-weight:700;line-height:1.4}
.xmind-p{display:contents;list-style:none}
.xmind-p li{padding:10px 12px;border:1px solid var(--line-2);border-radius:10px;background:var(--bg);text-align:center;line-height:1.4}
.xmind-p li:nth-child(1){grid-area:p1}.xmind-p li:nth-child(2){grid-area:p2}.xmind-p li:nth-child(3){grid-area:p3}.xmind-p li:nth-child(4){grid-area:p4}.xmind-p li:nth-child(5){grid-area:p5}
.xspk-panel{display:grid;grid-template-columns:auto auto minmax(0,1fr);align-items:center;gap:10px 18px;padding:16px 18px;border:1px solid var(--line-2);border-radius:14px;background:var(--paper)}
.xspk-phase{display:flex;align-items:center;gap:10px;margin:0}
.xspk-phase .dot{width:12px;height:12px;border-radius:50%;background:var(--muted);flex:0 0 auto}
.xspk-panel[data-phase="listen"] .dot{background:var(--x-acc)}
.xspk-panel[data-phase="prep"] .dot{background:#e0a100}
.xspk-panel[data-phase="rec"] .dot{background:var(--x-err);animation:xpulse 1s infinite}
.xspk-panel[data-phase="saved"] .dot{background:var(--x-ok)}
.xspk-clock{font-family:var(--f-mono);font-size:1.4rem;font-weight:600;font-variant-numeric:tabular-nums;margin:0;min-width:3.2em}
.xmeter{display:flex;align-items:center;gap:3px;height:24px}
.xmeter i{width:6px;height:100%;border-radius:2px;background:var(--line-2)}
.xmeter i.on{background:var(--x-ok)}
.xspk-panel:not([data-phase="rec"]) .xmeter{visibility:hidden}
.xspk-warn{grid-column:1/-1;margin:0;padding:8px 12px;border-radius:8px;background:var(--x-err-bg);color:var(--x-err-ink);font-weight:600}
.xspk-acts{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:10px}
.xspk-acts:empty{display:none}
.xspk-note{color:var(--muted);margin:0}
.xclips{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.xclip{font-size:.78rem;padding:4px 10px;border-radius:999px;background:var(--bg);border:1px solid var(--line)}
.xclip em{font-style:normal;margin-left:6px;color:var(--muted)}
.xclip.uploaded em{color:var(--x-ok)}
.xclip.upload_failed em,.xclip.no_response em{color:var(--x-err)}
.xspk-resume{display:grid;gap:14px}

/* ---------- review ---------- */
.xreview .xcol{display:grid;gap:14px;align-content:start}
.xtable-wrap{overflow-x:auto}
.xtable{width:100%;max-width:30rem;border-collapse:collapse;font-size:.94rem}
.xtable th{font-family:var(--f-mono);font-size:.7rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);text-align:left;padding:0 10px 8px;border-bottom:1px solid var(--line-2)}
.xtable td{padding:8px 10px;border-bottom:1px solid var(--line)}
.xtable .n{text-align:right;font-variant-numeric:tabular-nums}
.xjump{display:flex;flex-wrap:wrap;gap:6px}
.xjump-b{min-width:42px;height:38px;padding:0 8px;border:1px solid var(--x-box);border-radius:6px;background:var(--paper);font-family:var(--f-mono);font-weight:600;cursor:pointer}
.xjump-b:hover{border-color:var(--ink)}
.xjump.flagged .xjump-b{border-color:var(--x-flag);color:var(--x-flag)}
.xlink{padding:0;border:0;background:none;font-weight:600;text-decoration:underline;cursor:pointer}
.xnote{padding:10px 12px;border-radius:10px;background:var(--x-warn-bg)}

/* ---------- notes, menu, modal, toasts ---------- */
.xnotes-panel{position:fixed;right:0;top:56px;bottom:62px;z-index:120;width:min(22rem,100vw);display:flex;flex-direction:column;gap:8px;padding:14px;background:var(--paper);border-left:1px solid var(--line-2)}
.xnotes-panel .xta{min-height:0}
.xpanel-h{display:flex;align-items:center;justify-content:space-between}
.xpanel-h h2{font-size:1.1rem}
.xmenu{position:fixed;z-index:160;width:min(19rem,calc(100vw - 16px));display:grid;gap:4px;padding:8px;background:var(--paper);border:1px solid var(--line-2);border-radius:14px;box-shadow:0 34px 70px -34px rgba(20,24,44,.45)}
.xmenu-item{display:flex;align-items:center;gap:10px;width:100%;padding:10px;border:0;border-radius:8px;background:none;text-align:left;cursor:pointer;font-weight:500}
.xmenu-item:hover{background:var(--bg)}
.xmenu-row{padding:6px 10px}
.xmenu-l{font-family:var(--f-mono);font-size:.68rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:0 0 6px}
.xseg{display:flex;gap:3px;padding:3px;border:1px solid var(--line-2);border-radius:10px}
.xseg button{flex:1;padding:6px;border:0;border-radius:7px;background:none;cursor:pointer;font-weight:600}
.xseg button[aria-pressed="true"]{background:var(--ink);color:#fff}
.xa0{font-size:.82rem}.xa1{font-size:1rem}.xa2{font-size:1.2rem}
.xmenu-mode{font-size:.8rem;color:var(--muted);padding:4px 10px;margin:0}
.xmodal-bg{position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:16px;background:rgba(20,24,44,.45)}
.xmodal{width:100%;max-width:32rem;display:grid;gap:12px;padding:24px;background:var(--paper);border-radius:18px;box-shadow:0 34px 70px -34px rgba(20,24,44,.45)}
.xmodal-t{font-size:1.3rem;font-weight:700}
.xmodal-b{display:grid;gap:8px;color:var(--ink-2)}
.xmodal-a{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px;margin-top:6px}
body.x-modal-open{overflow:hidden}
.xtoasts{position:fixed;left:50%;bottom:84px;z-index:210;transform:translateX(-50%);display:grid;gap:8px;justify-items:center;width:min(30rem,calc(100vw - 24px));pointer-events:none}
.xtoast{padding:10px 16px;border-radius:12px;background:var(--ink);color:#fff;font-size:.92rem;box-shadow:var(--shadow);transition:opacity .3s}
.xtoast.warn{background:#5c3b00;color:#fff}
.xtoast.out{opacity:0}

/* ---------- briefing, email and message screens ---------- */
.xscreen{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;background:var(--bg)}
.xscreen-main{flex:1;display:flex;justify-content:center;align-items:flex-start;padding:32px 16px 56px;outline:none}
.xsheet{width:100%;max-width:46rem;display:grid;gap:16px;align-content:start;padding:32px;background:var(--paper);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}
.xh1{font-size:clamp(1.7rem,3.4vw,2.4rem);font-weight:800;letter-spacing:-.035em;line-height:1.1}
.xh2{font-size:1.3rem;font-weight:700;letter-spacing:-.015em;outline:none}
.xh3{font-family:var(--f-body);font-size:1.02rem;font-weight:700;letter-spacing:0;margin-top:6px}
.xlead{color:var(--ink-2);font-size:1.04rem}
.xmuted{color:var(--muted);font-size:.9rem}
.xmuted a{color:var(--ink)}
.xacts{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.xb-eyebrow{font-family:var(--f-mono);font-size:.72rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--x-acc-ink)}
.xb-facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0}
.xb-facts div{padding:12px 14px;background:var(--bg);border:1px solid var(--line);border-radius:14px;min-width:0}
.xb-facts dt{font-family:var(--f-mono);font-size:.68rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.xb-facts dd{margin:0;font-family:var(--f-display);font-size:1.05rem;font-weight:700;line-height:1.3}
.xb-rules{margin:0;padding-left:1.2em;display:grid;gap:6px;color:var(--ink-2)}
.xb-done{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;border-radius:12px;background:var(--x-acc-soft);margin:0}
.xb-done svg{color:var(--x-acc-ink);flex:0 0 auto;margin-top:2px}
.xb-done.warn{background:var(--x-warn-bg)}
.xb-checks{display:grid;gap:12px}
.xb-checks:empty{display:none}
.xcheck{display:grid;gap:10px;padding:16px;border:1px solid var(--line-2);border-radius:14px}
.xcheck h3{display:flex;align-items:center;gap:8px;font-family:var(--f-body);font-size:1rem;letter-spacing:0}
.xcheck p{margin:0;color:var(--ink-2)}
.xcheck-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px}
.xcheck-msg.err{color:var(--x-err);font-weight:600}
.xcheck-msg.ok,.xcheck-ok{color:var(--x-ok);font-weight:600}
.xcheck-over{display:flex;gap:8px;align-items:center;font-size:.92rem}
.xform{display:grid;gap:8px;margin-top:4px}
.xform-l{font-weight:600}
.xform input[type="email"]{width:100%;max-width:30rem;padding:12px 14px;border:1px solid var(--x-box);border-radius:10px;font:inherit;color:var(--ink);background:var(--paper)}
.xform input[type="email"]:focus{border-color:var(--x-acc-ink);box-shadow:0 0 0 1px var(--x-acc-ink);outline:none}
.xform input[aria-invalid="true"]{border-color:var(--x-err);box-shadow:0 0 0 1px var(--x-err)}
.xform-help{font-size:.86rem;color:var(--muted);max-width:36rem;margin:0}
.xform-help a{color:var(--ink)}
.xform-err{color:var(--x-err);font-weight:600;margin:0}
.xform-err:empty{display:none}
.xform-check{display:flex;gap:10px;align-items:flex-start;font-size:.92rem;color:var(--ink-2);margin-top:6px;cursor:pointer}
.xform-check input{width:1.1em;height:1.1em;margin:.25em 0 0;accent-color:var(--x-acc-ink);flex:0 0 auto}

/* ---------- high contrast ---------- */
html[data-contrast="high"] body.x{--ink:#000;--ink-2:#000;--muted:#1d1d1d;--line:#000;--line-2:#000;--x-box:#000;--bg:#fff;--x-acc:#000;--x-acc-ink:#000;--x-acc-soft:#e6e6e6;--x-warn-bg:#fff;--x-err-bg:#fff;--x-err-ink:#000;background:#fff;color:#000}
html[data-contrast="high"] .xg,html[data-contrast="high"] .xdrop,html[data-contrast="high"] .xsel,html[data-contrast="high"] .xta,html[data-contrast="high"] .xopt,html[data-contrast="high"] .xcard,html[data-contrast="high"] .xchoice,html[data-contrast="high"] .xtime,html[data-contrast="high"] .xbtn,html[data-contrast="high"] .xform input,html[data-contrast="high"] .xjump-b{border-width:2px;border-color:#000}
html[data-contrast="high"] .xq{border-top-color:#9a9a9a}
html[data-contrast="high"] .xq.ans{border-top-color:#000}
html[data-contrast="high"] .xnav,html[data-contrast="high"] .xbar,html[data-contrast="high"] .xinstr{border-width:2px;border-color:#000}
html[data-contrast="high"] .xsheet,html[data-contrast="high"] .xmodal,html[data-contrast="high"] .xmenu,html[data-contrast="high"] .xpick{border:2px solid #000;box-shadow:none}
html[data-contrast="high"] .xqflag,html[data-contrast="high"] .xmuted,html[data-contrast="high"] .xnav-cnt{color:#000}
html[data-contrast="high"] .xqflag[aria-pressed="true"],html[data-contrast="high"] .xflag[aria-pressed="true"]{color:#c00}
html[data-contrast="high"] :focus-visible{outline:3px solid #000;outline-offset:2px}

/* ---------- tablets and phones ---------- */
@media (max-width:980px){
  .xpane{padding:20px 20px 110px}
  .xmind{grid-template-columns:repeat(2,minmax(0,1fr));grid-template-areas:"c c" "p1 p2" "p3 p4" "p5 p5"}
}
@media (max-width:760px){
  .xbar{gap:8px;padding:0 max(10px,env(safe-area-inset-right)) 0 max(10px,env(safe-area-inset-left))}
  .xbar-title{font-size:.84rem}
  .xbar-title span{display:none}
  .xtime{padding:4px 8px}
  .xtime-l{display:none}
  .xic{width:38px;height:38px}
  .xinstr{padding:8px 16px}
  .xinstr-h,.xinstr-r{font-size:.86rem}
  .xinstr-r{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  .xinstr.open .xinstr-r{display:block}
  .xinstr-more{display:inline;justify-self:start}
  .xlisbar{padding:6px 16px;font-size:.84rem}
  .xvol input{width:84px}
  .xcol{padding:18px 16px 110px}
  .xsplit{grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(0,1fr)}
  .xtabs{display:flex;gap:4px;padding:6px 16px;border-bottom:1px solid var(--line);background:var(--bg)}
  .xtabs button{flex:1;padding:8px;border:1px solid var(--x-box);border-radius:999px;background:var(--paper);font-weight:600;font-size:.88rem;cursor:pointer}
  .xtabs button[aria-selected="true"]{background:var(--ink);border-color:var(--ink);color:#fff}
  .xdiv{display:none}
  .xpane-l,.xpane-r{grid-column:1;grid-row:2;padding:16px 16px 110px}
  .xsplit[data-show="left"] .xpane-r,.xsplit[data-show="right"] .xpane-l{display:none}
  .xtext-wf p{padding-right:0}
  .xstem{float:none;display:inline;width:auto;margin:0 4px 0 2px;font-size:.78rem}
  .xstem::before{content:"("}.xstem::after{content:")"}
  .xact{right:10px;bottom:10px;gap:6px}
  .xbtn{height:42px;padding:0 12px}
  .xbtn.xarrow{width:42px}
  .xnav{min-height:58px}
  .xnav-tab{min-width:78px;padding:6px 12px}
  .xnav-review{width:56px}
  .xmatch{grid-template-columns:auto minmax(0,1fr) auto;padding-left:8px}
  .xmatch .xsel{grid-column:2;justify-self:start}
  .xmatch .xqflag{grid-column:3;grid-row:1}
  .xboard-g{grid-template-columns:minmax(0,1fr);gap:16px}
  .xboard-opts{position:static}
  .xspeaker{grid-template-columns:auto minmax(0,1fr) auto;padding-left:8px}
  .xspeaker .xdrop{grid-column:1/-1}
  .xspeaker .xqflag{grid-column:3;grid-row:1}
  .xmc{padding:12px 42px 16px 8px}
  .xkwt{padding:14px 8px 16px}
  .xsc{padding-left:8px}
  .xg-mc{min-width:7.5em}
  .xdrop{min-width:8em}
  .xspk,.xwork>.xspk{padding:18px 16px 32px}
  .xphotos.n3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .xspk-panel{grid-template-columns:auto auto;padding:14px}
  .xspk-panel .xmeter{grid-column:1/-1}
  .xmind{grid-template-columns:minmax(0,1fr);grid-template-areas:"c" "p1" "p2" "p3" "p4" "p5"}
  .xsheet{padding:22px 18px;border-radius:16px}
  .xscreen-main{padding:16px 12px 40px}
  .xb-facts{grid-template-columns:minmax(0,1fr)}
  .xb-facts div{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:10px 12px}
  .xmodal-a .btn{flex:1}
  .xnotes-panel{top:56px;bottom:58px}
  .xtoasts{bottom:76px}
}
@media (max-width:420px){
  .xflag span{display:none}
  .xflag{width:42px;padding:0}
  .xlis-prog{flex-basis:100%;order:3}
}
@media (prefers-reduced-motion:reduce){.xlis-prog i{transition:none}}

/* focus: visible everywhere, kept inside clipped containers (navigator, panes) */
.xq:focus-visible,.xnav-tab:focus-visible,.xnav-review:focus-visible,.xtabs button:focus-visible,.xseg button:focus-visible,.xmenu-item:focus-visible,.xpick-o:focus-visible{outline:2px solid var(--ink);outline-offset:-3px;border-radius:6px}
.xnav-review:focus-visible{outline-color:#fff}
.xopt:has(input:focus-visible),.xchoice:has(input:focus-visible){outline:2px solid var(--ink);outline-offset:2px}
.xcard:focus-visible,.xjump-b:focus-visible,.xbtn:focus-visible,.xqflag:focus-visible,.xic:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.xg-in:focus-visible,.xta:focus-visible{outline:none}

/* larger targets on touch screens (QA D20) */
@media (pointer:coarse){
  .xinstr-more{min-height:44px}
  .xvol input{height:44px}
  .xsplit{grid-template-columns:minmax(0,var(--split,50%)) 24px minmax(0,1fr)}
  .xdiv span{width:32px;height:32px}
  .xq{min-width:40px;height:40px}
}
@media (max-width:1280px){
  .xnav-tab{min-width:72px;padding:6px 10px}
  .xnav-qs{gap:2px;padding-right:8px}
}
@media (max-width:1280px) and (pointer:fine){.xq{min-width:31px}}