:root{--bg:#0a1016;--panel:#111b24;--line:#1e2e3b;--ink:#dce7ee;--dim:#8aa0b0;--amber:#ffb02e;--cyan:#5ad1e6;--blue:#3b82f6;--orange:#f97316;--bad:#64748b;
--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;--sans:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.45 var(--sans);-webkit-text-size-adjust:100%}
body{min-height:100vh;display:flex;flex-direction:column;
 background-image:linear-gradient(rgba(90,209,230,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(90,209,230,.045) 1px,transparent 1px);background-size:32px 32px}
a{color:var(--cyan)}
.app{flex:1;width:100%;max-width:640px;margin:0 auto;padding:12px 12px 4px}
.loading{font-family:var(--mono);color:var(--dim);padding:40px 0;text-align:center}
.hud{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:13px;color:var(--dim);margin-bottom:8px;min-height:30px}
.brand{font-family:var(--mono);font-weight:700;letter-spacing:.14em;color:var(--amber);text-transform:uppercase;font-size:14px}
.brand small{color:var(--dim);font-weight:400;letter-spacing:.06em}
.task{font-size:18px;font-weight:650;margin:2px 0 8px}
.task .lbl{font-family:var(--mono);font-size:11px;color:var(--cyan);letter-spacing:.12em;text-transform:uppercase;display:block;font-weight:500}
.scope{position:relative;width:100%;aspect-ratio:1/1;max-width:70vh;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#05080b;touch-action:none;cursor:crosshair;margin:0 auto;-webkit-user-select:none;user-select:none}
.stage{position:absolute;inset:0;transform-origin:0 0;will-change:transform}
.stage.anim{transition:transform .25s ease}
.scope.zoomed{cursor:grab}
.scope img{position:absolute;inset:0;width:100%;height:100%;object-fit:fill;user-select:none;-webkit-user-drag:none;display:block}
.scope svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible}
.scope.locked{cursor:default}
.scope .corner{position:absolute;width:16px;height:16px;border:2px solid var(--amber);opacity:.7;pointer-events:none}
.c1{top:6px;left:6px;border-right:0!important;border-bottom:0!important}.c2{top:6px;right:6px;border-left:0!important;border-bottom:0!important}
.c3{bottom:6px;left:6px;border-right:0!important;border-top:0!important}.c4{bottom:6px;right:6px;border-left:0!important;border-top:0!important}
.scale{position:absolute;left:10px;bottom:10px;font:10px var(--mono);color:#fff;text-shadow:0 1px 2px #000;pointer-events:none}
.scale i{display:block;height:3px;background:#fff;box-shadow:0 1px 2px #000;margin-bottom:2px}
.timer{height:4px;background:var(--line);border-radius:2px;overflow:hidden;margin:8px 0}
.timer i{display:block;height:100%;background:var(--amber);width:100%;transition:width .1s linear}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.btn{appearance:none;border:1px solid var(--line);background:var(--panel);color:var(--ink);font:600 15px var(--sans);padding:11px 16px;border-radius:8px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:6px;min-height:44px}
.btn:hover{border-color:var(--cyan)}
.btn.primary{background:var(--amber);border-color:var(--amber);color:#1a1205}
.btn.primary:disabled{opacity:.35;cursor:not-allowed}
.btn.ghost{background:transparent}
.btn.x{background:#000;border-color:#333;color:#fff}
.grow{flex:1}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:14px;margin:10px 0}
.big{font:700 40px/1 var(--mono);color:var(--amber)}
.mono{font-family:var(--mono)}
.dim{color:var(--dim)}
.note{font-size:14px;color:var(--ink);border-left:3px solid var(--cyan);padding:2px 0 2px 10px;margin:8px 0}
.breakdown{font:12px var(--mono);color:var(--dim)}
.grid{font-size:26px;letter-spacing:2px;margin:6px 0}
pre.share{white-space:pre-wrap;font:13px var(--mono);background:#071017;border:1px dashed var(--line);border-radius:8px;padding:10px;margin:8px 0;user-select:all}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;text-align:center;margin:8px 0}
.stats b{display:block;font:700 20px var(--mono);color:var(--ink)}
.stats span{font:10px var(--mono);color:var(--dim);text-transform:uppercase;letter-spacing:.06em}
.list{list-style:none;padding:0;margin:6px 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:6px}
.list a{display:block;padding:8px;border:1px solid var(--line);border-radius:6px;text-decoration:none;color:var(--ink);font:12px var(--mono)}
.list a:hover{border-color:var(--amber)}
.tag{display:inline-block;font:10px var(--mono);letter-spacing:.08em;text-transform:uppercase;padding:2px 6px;border-radius:4px;border:1px solid var(--cyan);color:var(--cyan)}
.tag.practice{border-color:var(--orange);color:var(--orange)}
.foot{display:flex;flex-wrap:wrap;gap:4px 14px;justify-content:center;font:11px var(--mono);color:var(--dim);padding:10px 12px 16px}
.foot a{color:var(--dim)}
.howto{margin:8px 0;padding-left:18px;color:var(--dim)}
.howto li{margin:3px 0}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--amber);color:#111;padding:8px 14px;border-radius:8px;font:600 13px var(--sans);z-index:9}
/* ---------- embed: 640x480, key UI inside top ~336px ---------- */
body[data-mode=embed]{background-size:24px 24px}
body[data-mode=embed] .app{max-width:none;padding:8px}
body[data-mode=embed] .foot{padding:4px 8px;font-size:10px}
@media (max-width:559px){
 body[data-mode=embed] .task{font-size:15px}
}
/* ---------- v2: clean UI ---------- */
.hudr{display:flex;align-items:center;gap:10px}
.pts b{color:var(--ink);font:700 15px var(--sans)}
.dots{display:flex;gap:6px}
.dots span{width:10px;height:10px;border-radius:50%;background:var(--line)}
.dots .cur{background:transparent;box-shadow:inset 0 0 0 2px var(--amber)}
.dots .good{background:var(--blue)}.dots .ok{background:var(--orange)}.dots .miss{background:var(--bad)}
.iconbtn{width:28px;height:28px;border-radius:50%;border:1px solid var(--line);background:transparent;color:var(--dim);font:600 14px var(--sans);cursor:pointer;padding:0}
.kicker{font-size:12px;color:var(--dim);margin-bottom:2px}
.small{font-size:12px}
.cover{position:absolute;inset:0;background:rgba(5,8,11,.55);display:grid;place-items:center;z-index:3}
.big-btn{font-size:18px;padding:12px 26px}
.zoom{position:absolute;right:8px;top:8px;display:flex;flex-direction:column;gap:6px;z-index:2}
.zoom button,.info{width:34px;height:34px;border-radius:8px;background:rgba(10,16,22,.72);color:#fff;border:1px solid rgba(255,255,255,.2);font:600 18px/1 var(--sans);cursor:pointer;padding:0;display:grid;place-items:center}
.info{position:absolute;right:8px;bottom:8px;width:26px;height:26px;border-radius:50%;font:italic 600 14px/1 Georgia,serif;z-index:2}
.pop{position:absolute;right:8px;bottom:40px;max-width:78%;background:rgba(10,16,22,.92);border:1px solid var(--line);border-radius:8px;padding:8px 10px;font-size:12px;color:var(--ink);z-index:2}
.scale span{display:block}
.verdict{display:flex;align-items:baseline;gap:10px;margin:2px 0 4px}
.verdict .word{font:700 26px var(--sans)}
.verdict.good .word{color:var(--cyan)}.verdict.ok .word{color:var(--amber)}.verdict.miss .word{color:var(--dim)}
.note{border-left:0;padding:0;font-size:15px;margin:4px 0 8px}
details.more{font-size:12px;color:var(--dim);margin:0 0 8px}
details.more summary{cursor:pointer;width:max-content}
details.more div{margin-top:4px}
.btn small{font-weight:400;opacity:.7}
.rounds{list-style:none;padding:0;margin:8px 0}
.rounds li{margin:4px 0}
.stats{grid-template-columns:repeat(3,1fr)}
.stats b,.stats span{font-family:var(--sans)}
.modal{position:fixed;inset:0;background:rgba(5,8,11,.72);display:grid;place-items:center;z-index:20;padding:12px}
.modal .card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px;max-width:340px;width:100%}
.modal h2{margin:0 0 6px;font-size:18px}
.modal ol{margin:0 0 12px;padding-left:20px}
.modal li{margin:5px 0}
body[data-mode=embed] .modal .card{padding:12px 14px;font-size:14px}
body[data-mode=embed] .verdict .word{font-size:22px}
body[data-mode=embed] .side .note{font-size:13px}
/* ---------- v3: difficulty ---------- */
.tier{display:inline-block;vertical-align:middle;font:600 11px var(--sans);letter-spacing:.04em;padding:2px 8px;border-radius:999px;margin-right:8px;position:relative;top:-2px;border:1px solid}
.t-easy{color:#6ee7b7;border-color:rgba(110,231,183,.45)}.t-medium{color:var(--amber);border-color:rgba(255,176,46,.45)}.t-hard{color:#fb7185;border-color:rgba(251,113,133,.45)}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;margin:6px 0}
.seg a{padding:7px 12px;font:600 13px var(--sans);color:var(--dim);text-decoration:none;border-left:1px solid var(--line)}
.seg a:first-child{border-left:0}
.seg a.on{background:var(--amber);color:#1a1205}
.foot{display:block;text-align:center;font:11px/1.6 var(--sans);padding:10px 12px 14px}
/* ---------- v4: consolidated results ---------- */
.results{max-width:520px;margin:0 auto}
.results.more{margin-top:14px}
.rhead{display:flex;align-items:flex-end;justify-content:space-between;gap:10px;margin:6px 0 10px}
.rhead .kicker{font-size:13px;margin:0 0 6px}
.total b{font:700 42px/1 var(--mono);color:var(--amber)}
.total span{color:var(--dim);font:500 16px var(--mono);margin-left:2px}
.rtable{list-style:none;margin:0 0 12px;padding:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--panel)}
.rrow+.rrow{border-top:1px solid var(--line)}
.rbtn{appearance:none;border:0;background:transparent;color:var(--ink);font:15px var(--sans);display:grid;grid-template-columns:14px minmax(0,1fr) auto 42px 10px;gap:10px;align-items:center;width:100%;padding:11px 14px;cursor:pointer;text-align:left}
.rbtn:hover{background:rgba(255,255,255,.03)}
.rbtn:focus-visible{outline:2px solid var(--cyan);outline-offset:-2px}
.sqr{width:14px;height:14px;border-radius:3px}
.sqr.good{background:var(--blue)}.sqr.ok{background:var(--orange)}.sqr.miss{background:#0b0f14;box-shadow:inset 0 0 0 1.5px #475569}
.rname{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rtier{font-size:11px;letter-spacing:.03em}
.rpts{text-align:right;font:700 15px var(--mono)}
.chev{color:var(--dim);font-size:16px;line-height:1;transition:transform .15s}
.rbtn[aria-expanded=true] .chev{transform:rotate(90deg)}
.rdetail{display:flex;gap:12px;padding:0 14px 12px 38px;align-items:flex-start}
.rdetail[hidden]{display:none}
.rthumb{position:relative;width:150px;flex:none;aspect-ratio:1/1;border-radius:8px;overflow:hidden;border:1px solid var(--line)}
.rthumb img,.rthumb svg{position:absolute;inset:0;width:100%;height:100%}
.rdetail p{margin:0;font-size:13px;color:var(--ink)}
.iconcopy{width:46px;padding:0;justify-content:center;font-size:18px}
.quiet{font-size:12px;color:var(--dim);margin:10px 0 0;text-align:center}
.quiet a{color:var(--dim)}
body[data-mode=embed] .results{max-width:600px}
body[data-mode=embed] .rhead{margin:0 0 6px}
body[data-mode=embed] .total b{font-size:30px}
body[data-mode=embed] .rbtn{padding:6px 12px;font-size:14px}
body[data-mode=embed] .rthumb{width:92px}
body[data-mode=embed] .rdetail{padding:0 12px 8px 36px}
body[data-mode=embed] .quiet{margin-top:6px}
body[data-mode=embed] .results .btn{min-height:38px;padding:8px 12px}
.results .btn.x{justify-content:center}

.foot .foot-line { display: block; }
.foot .foot-line + .foot-line { margin-top: 2px; }
/* ---------- v5: start screen ---------- */
.ititle{margin:0;font:700 22px/1.2 var(--sans);letter-spacing:-.01em;color:var(--ink);text-wrap:balance}
.isub{margin:0;font-size:13px;line-height:1.5;color:var(--dim);text-wrap:balance}
.intro .kicker{font:500 11px var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--cyan);margin:0}
.ihead{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center}
.intro{text-align:center;align-items:center}
.lineup{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:8px;width:100%;max-width:290px}
.lineup li{display:flex;flex-direction:column;align-items:center;gap:6px;font:500 10px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--dim)}
.lineup i{display:block;width:100%;height:4px;border-radius:2px;background:var(--line)}
.lineup .t-easy i{background:#6ee7b7}.lineup .t-medium i{background:var(--amber)}.lineup .t-hard i{background:#fb7185}
.lineup .t-easy,.lineup .t-medium,.lineup .t-hard{border:0}
.istats{display:grid;grid-template-columns:repeat(3,1fr);width:100%;max-width:290px;border:1px solid var(--line);border-radius:12px;background:rgba(17,27,36,.7);padding:10px 0}
.istats div+div{border-left:1px solid var(--line)}
.istats b{display:block;font:700 20px/1.2 var(--mono);color:var(--ink)}
.istats span{font:500 10px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--dim)}
.istart{margin:0;font:500 13px var(--sans);color:var(--amber)}
.inext{margin:0;font:12px var(--mono);color:var(--dim)}
.inext a{color:var(--cyan);text-decoration:none}
.inext span{white-space:nowrap}
.inext a:hover{text-decoration:underline}
body:not(.split) .app.is-intro{display:flex;flex-direction:column}
body:not(.split) .intro-play{flex:1;display:flex;flex-direction:column}
body:not(.split) .intro{flex:1;display:flex;flex-direction:column;justify-content:center;gap:22px;padding:22px 8px 18px}
.imeta{display:flex;flex-direction:column;align-items:center;gap:12px;width:100%}
/* v6: header hugs the photo; stats/countdown balanced in the space below the strip */
body:not(.split) .intro{justify-content:flex-start;gap:20px;padding:18px 8px 12px}
body:not(.split) .intro .imeta{flex:1;justify-content:center;gap:14px;padding:28px 0 16px}

/* decoy rounds */
.caution{margin:-4px 0 8px;font-size:13px;color:#ff8a8a}
body[data-mode=embed] .caution{font-size:12px;margin:2px 0 4px}
.verdict.decoy .word{color:#ff5c5c}
.dkey{display:inline-block;width:14px;height:0;border-top:2px dashed #ff5c5c;vertical-align:middle;margin-right:6px}

/* ---------- v7: split layout (photo left, panel right) ----------
   app.js adds body.split for: the embed in any landscape frame >=560px wide (X player 640x480, desktop 560x420, phone landscape),
   and the full site in short landscape windows (phones turned sideways). --s is the photo's side length. */
body.split{--chrome:62px;--s:min(calc(100vh - var(--chrome)),58vw)}
@supports (height:100dvh){body.split{--s:min(calc(100dvh - var(--chrome)),58vw)}}
body.split .app{max-width:calc(var(--s) + 470px);padding:10px 14px 8px;display:flex;flex-direction:column}
body.split .hud{margin-bottom:6px;min-height:30px}
body.split .app .play{display:grid;grid-template-columns:var(--s) minmax(0,1fr);gap:16px;align-items:start;flex:none}
body.split .scope{width:var(--s);height:var(--s);max-width:none;margin:0}
body.split .side{height:var(--s);overflow:auto;display:flex;flex-direction:column;gap:8px;justify-content:center;min-width:0;width:100%;max-width:420px;justify-self:center}
body.split .side>*{margin-top:0;margin-bottom:0}
body.split .side .row{flex-wrap:nowrap}
body.split .side .task{font-size:17px}
body.split .side.intro{align-items:center;text-align:center;gap:14px;padding:0}
body.split .intro .imeta{gap:10px;padding:4px 0 0}
body.split .ititle{font-size:21px}
body.split .lineup{max-width:270px}
body.split .istats{max-width:270px;padding:8px 0}
body.split .istats b{font-size:18px}
/* embed: the frame is fixed (no scrolling), so the footer's height comes out of the photo's */
body.split[data-mode=embed]{--chrome:96px;height:100vh;height:100dvh;min-height:0;overflow:hidden}
body.split[data-mode=embed] .app{padding:8px 10px 0;max-width:calc(var(--s) + 420px);min-height:0;overflow:auto}
body.split[data-mode=embed] .foot{font:10px/14px var(--sans);padding:6px 8px 8px}
body.split[data-mode=embed] .app .play{gap:12px}
body.split[data-mode=embed] .side{max-width:380px;gap:6px}
body.split[data-mode=embed] .side.intro{gap:12px}
body.split[data-mode=embed] .side .btn{padding:8px 12px;min-height:40px;font-size:14px}
body.split[data-mode=embed] .side .task{font-size:16px}
body.split[data-mode=embed] .side .note{font-size:13px}
body.split[data-mode=embed] .ititle{font-size:19px}
@media (max-height:400px){
 body.split .istats{display:none}
 body.split[data-mode=embed] .ititle{font-size:18px}
}
/* end screen in split mode: keep it a single centered column */
body.split .results{width:100%}
/* embed portrait: the start screen matches the site's */
body[data-mode=embed]:not(.split) .app{max-width:640px;margin:0 auto;padding:12px 12px 4px}
/* ---------- v10: home + play again ---------- */
.hudl{display:flex;align-items:center;gap:6px;min-width:0}
button.brand.home{appearance:none;background:none;border:0;padding:4px 0;margin:0;cursor:pointer;font-family:var(--mono);font-weight:700;letter-spacing:.14em;color:var(--amber);text-transform:uppercase;font-size:14px}
button.brand.home::before{content:"‹ ";color:var(--dim);letter-spacing:0}
button.brand.home:hover,button.brand.home:focus-visible{text-decoration:underline;text-underline-offset:3px}
.cbtns{display:flex;flex-direction:column;align-items:center;gap:10px}
.cdone{font:500 13px var(--sans);color:#fff;text-shadow:0 1px 3px #000}
.cdone b{font-family:var(--mono);color:var(--amber)}
.cghost{background:rgba(10,16,22,.75);border-color:rgba(255,255,255,.28);color:#fff;font-size:14px;min-height:38px;padding:8px 18px}
.cnote{font:11px var(--sans);color:rgba(255,255,255,.75);text-shadow:0 1px 2px #000}
.nav{display:flex;justify-content:center;gap:22px;margin:12px 0 0}
.lnk{appearance:none;background:none;border:0;padding:6px 2px;color:var(--cyan);font:600 14px var(--sans);cursor:pointer}
.lnk small{font-weight:400;color:var(--dim)}
.lnk:hover{text-decoration:underline}
body[data-mode=embed] .nav{margin-top:6px}
body[data-mode=embed] .lnk{padding:3px 2px;font-size:13px}
/* ---------- v11: challenge links ---------- */
.ichal{margin:0;font:500 13px var(--sans);color:var(--amber);text-wrap:balance}
.ichal b{font-family:var(--mono)}
.vs{margin:-4px 0 10px;font-size:14px;color:var(--dim)}
.vs b{color:var(--ink)}.vs.win b{color:var(--cyan)}.vs.lose b{color:var(--amber)}
body[data-mode=embed] .vs{margin:-2px 0 6px;font-size:13px}