:root{--bg:#f4f5f7;--card:#fff;--ink:#1c1e24;--muted:#6b7280;--line:#e3e5ea;--accent:#2457c5;--accent-soft:#e8effc;--ok:#1f8a4c;--ok-soft:#e5f5ec;--bad:#c62828;--bad-soft:#fdeaea;--warn:#b26a00;--warn-soft:#fff4e0;--radius:10px}
*{box-sizing:border-box}
.hidden{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 -apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-wrap:break-word}
button,a.btn{-webkit-tap-highlight-color:transparent;touch-action:manipulation}
button{font:inherit;cursor:pointer}
a{color:var(--accent)}
header.site{background:var(--card);border-bottom:1px solid var(--line);padding:16px 22px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
header.site .hl{flex:1;min-width:200px}
header.site h1{margin:0;font-size:22px}
header.site h1 a{color:inherit;text-decoration:none}
header.site .course{font-size:13px;margin-top:4px;color:var(--muted)}header.site .course a{color:var(--accent);text-decoration:none}header.site .course a:hover{text-decoration:underline}header.site .course b{color:var(--ink)}
header.site .sub{color:var(--muted);font-size:13px;margin-top:3px}
main{max-width:1100px;margin:0 auto;padding:20px 18px 60px}
.btn{font:inherit;border:1px solid var(--line);background:var(--card);color:var(--ink);padding:7px 14px;border-radius:8px;cursor:pointer;text-decoration:none;display:inline-block}
.btn:hover{border-color:#b9bec8}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:#1d49a6}
.btn.small{padding:4px 10px;font-size:13px}
.btn.danger{background:var(--bad);border-color:var(--bad);color:#fff}
.btn:disabled{opacity:.45;cursor:default}
.muted{color:var(--muted)}.small{font-size:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.tag{font-size:12px;padding:2px 8px;border-radius:999px;background:#eef0f4;color:#3b4252;white-space:nowrap}
.tag.ok{background:var(--ok-soft);color:var(--ok)}.tag.bad{background:var(--bad-soft);color:var(--bad)}.tag.warn{background:var(--warn-soft);color:var(--warn)}.tag.acc{background:var(--accent-soft);color:var(--accent)}
.userbar{display:flex;align-items:center;gap:10px;font-size:14px;flex-wrap:wrap}
.userbar .av{width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
/* login */
.card.login{display:block;max-width:720px;margin:30px auto}
.login h1{font-size:22px;margin:0 0 6px}
.login .userlist{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;margin:16px 0}
.userbtn{display:flex;gap:12px;align-items:center;text-align:left;border:1.5px solid var(--line);background:var(--card);border-radius:10px;padding:10px 12px;color:var(--ink);font:inherit;cursor:pointer}
.userbtn:hover{border-color:var(--accent);background:var(--accent-soft)}
.userbtn .av{flex:0 0 38px;height:38px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:17px}
.newuser{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.newuser input{font:inherit;padding:8px 12px;border:1.5px solid var(--line);border-radius:8px;flex:1;min-width:200px}
/* index */
.stats{display:flex;gap:22px;flex-wrap:wrap;margin:0 0 18px;font-size:14px;color:var(--muted)}
.stats b{color:var(--ink);font-size:18px;display:block}
.viewseg{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-bottom:14px;background:var(--card);flex-wrap:wrap}
.viewseg button{border:0;background:transparent;padding:9px 18px;color:var(--muted)}
.viewseg button.on{background:var(--accent);color:#fff}
.tools{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.tools input,.tools select{font:inherit;padding:8px 12px;border:1px solid var(--line);border-radius:8px;background:#fff}
.tools input{min-width:220px}
.famnote{color:var(--muted);font-size:14px;margin:-4px 0 14px}
h2.decade{font-size:17px;margin:24px 0 10px;padding-bottom:6px;border-bottom:1px solid var(--line)}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.ccard{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:13px 15px;display:flex;flex-direction:column;gap:7px;text-decoration:none;color:inherit}
.ccard:hover{border-color:#b9bec8;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.ccard .t{font-weight:600}
.ccard .meta{display:flex;flex-wrap:wrap;gap:6px}
.ccard .res{font-size:13px;color:var(--muted)}
.ccard .res b{color:var(--ok)}
.empty{color:var(--muted);padding:30px;text-align:center}
.mlist{display:grid;gap:8px}
.mrow{display:flex;gap:10px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:8px;padding:10px 14px;text-decoration:none;color:inherit;flex-wrap:wrap}
.mrow:hover{border-color:#b9bec8}
.mrow .t{font-weight:600;flex:1;min-width:160px}
/* test page */
header.top{position:sticky;top:0;z-index:10;background:var(--card);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;padding:9px 18px;flex-wrap:wrap}
header.top .title{font-weight:600;flex:1;min-width:150px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
header.top .title a{color:inherit;text-decoration:none}
.htools{display:flex;align-items:center;gap:8px}
.timer{font-variant-numeric:tabular-nums;font-weight:600;font-size:18px;padding:3px 12px;border-radius:8px;background:var(--accent-soft);color:var(--accent)}
.timer.low{background:var(--bad-soft);color:var(--bad)}
.timer.paused{background:var(--warn-soft);color:var(--warn)}
body.test{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column}
.tmain{max-width:860px;width:100%;flex:1}
/* AP Lit: the passage stays beside its questions on wide screens */
.tmain:has(.split){max-width:1360px}
.split{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:26px;align-items:start}
.split .passage{position:sticky;top:70px;max-height:calc(100vh - 150px);overflow:auto;border:1px solid var(--line);border-radius:10px;background:#fff;padding:10px}
.split .passage img.qimg.shared{margin:0;padding:0;border:0}
@media (max-width:1000px){.split{display:block}.split .passage{position:static;max-height:none;margin-bottom:14px}}
.essay{margin:16px 0}
.essay .ehead{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:6px}
.essay textarea{width:100%;min-height:420px;resize:vertical;font:16px/1.65 Georgia,"Times New Roman",serif;padding:14px 16px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink)}
.essay textarea:focus{outline:2px solid var(--accent-soft);border-color:var(--accent)}
.qhead{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.qnum{background:var(--ink);color:#fff;font-weight:600;padding:3px 10px;border-radius:6px}
.flag{border:1px solid var(--line);background:var(--card);border-radius:6px;padding:4px 10px;font-size:13px}
.flag.on{background:var(--warn-soft);border-color:var(--warn);color:var(--warn)}
.stem{font-size:16.5px;line-height:1.7}
.stem p{margin:0 0 12px}
.stem hr.shared{border:0;border-top:1px dashed var(--line);margin:4px 0 14px}
img.fig{max-width:100%;height:auto;display:block;margin:10px auto;cursor:zoom-in}
img.texfb{vertical-align:middle;max-width:100%}
img.texfb.d{display:block;margin:8px auto}
.katex{font-size:1.08em}
.katex-display{overflow-x:auto;overflow-y:hidden;padding:2px 0}
.choices{display:grid;gap:9px;margin:18px 0 6px}
.ch{display:flex;align-items:stretch;gap:0;border:1.5px solid var(--line);border-radius:9px;background:var(--card);overflow:hidden}
.ch .pick{flex:1;display:flex;align-items:center;gap:12px;text-align:left;border:0;background:transparent;padding:10px 12px;color:var(--ink);min-height:48px}
.ch .let{flex:0 0 30px;height:30px;border-radius:50%;border:1.5px solid #9aa1ad;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px}
.ch .x{border:0;border-left:1px solid var(--line);background:transparent;color:var(--muted);padding:0 14px;font-size:13px}
.ch:hover{border-color:#b9bec8}
.ch.sel{border-color:var(--accent);background:var(--accent-soft)}
.ch.sel .let{background:var(--accent);border-color:var(--accent);color:#fff}
.ch.crossed .pick{opacity:.4;text-decoration:line-through}
.ch.right{border-color:var(--ok);background:var(--ok-soft)}.ch.right .let{background:var(--ok);border-color:var(--ok);color:#fff}
.ch.wrong{border-color:var(--bad);background:var(--bad-soft)}.ch.wrong .let{background:var(--bad);border-color:var(--bad);color:#fff}
.choices.letters{grid-template-columns:repeat(5,1fr)}
.choices.letters .ch .pick{justify-content:center}
.aime{display:flex;gap:10px;align-items:center;margin:18px 0;flex-wrap:wrap}
.aime input{font:600 22px/1 inherit;width:130px;padding:10px 12px;border:1.5px solid var(--line);border-radius:9px;text-align:center;font-variant-numeric:tabular-nums}
.aime input:focus{outline:0;border-color:var(--accent)}
.aime input.right{border-color:var(--ok);background:var(--ok-soft)}.aime input.wrong{border-color:var(--bad);background:var(--bad-soft)}
.qnav{display:flex;justify-content:space-between;gap:10px;margin-top:20px}
.feedback{margin:14px 0;padding:12px 14px;border-radius:9px;font-weight:600}
.feedback.ok{background:var(--ok-soft);color:var(--ok)}.feedback.bad{background:var(--bad-soft);color:var(--bad)}.feedback.info{background:#eef0f4;color:#3b4252;font-weight:400}
.sols{margin-top:18px}
.sol{border:1px solid var(--line);border-radius:9px;margin:10px 0;background:#fcfcfd}
.sol>summary{cursor:pointer;padding:10px 14px;font-weight:600}
.sol .body{padding:0 16px 12px;line-height:1.7}
.sol .body .c{text-align:center}
.sol .body pre{white-space:pre-wrap}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:7px}
.grid button{border:1.5px solid var(--line);background:var(--card);border-radius:7px;padding:8px 0;font-weight:600;position:relative}
.grid button.ans{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}
.grid button.cur{outline:2px solid var(--ink);outline-offset:1px}
.grid button.flg::after{content:"";position:absolute;top:3px;right:3px;width:7px;height:7px;border-radius:50%;background:var(--warn)}
.grid button.ok{background:var(--ok-soft);border-color:var(--ok);color:var(--ok)}
.grid button.bad{background:var(--bad-soft);border-color:var(--bad);color:var(--bad)}
.modal{position:fixed;inset:0;background:rgba(20,22,28,.45);z-index:50;display:flex;align-items:center;justify-content:center;padding:16px}
.modal .card{max-width:560px;width:100%;max-height:85vh;overflow:auto}
.modal.zoom{background:rgba(20,22,28,.85);cursor:zoom-out}
.modal.zoom img{max-width:96vw;max-height:92vh;background:#fff;border-radius:6px;padding:8px}
.bottombar{position:sticky;bottom:0;background:var(--card);border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:10px;padding:9px 18px calc(9px + env(safe-area-inset-bottom))}
.bottombar .pos{color:var(--muted);font-size:14px}
.opts{display:grid;gap:10px;margin:16px 0}
.opt{display:flex;gap:10px;align-items:flex-start;border:1.5px solid var(--line);border-radius:9px;padding:11px 13px;cursor:pointer}
.opt input{margin-top:4px}
.opt.on{border-color:var(--accent);background:var(--accent-soft)}
.scorebox{display:flex;gap:26px;flex-wrap:wrap;margin:10px 0 18px}
.scorebox div{font-size:14px;color:var(--muted)}
.scorebox b{display:block;font-size:26px;color:var(--ink)}
table.rev{width:100%;border-collapse:collapse;font-size:14px}
table.rev th,table.rev td{border-bottom:1px solid var(--line);padding:7px 8px;text-align:left}
table.rev tr.click{cursor:pointer}
table.rev tr.click:hover{background:#f7f8fa}
.ok-t{color:var(--ok);font-weight:600}.bad-t{color:var(--bad);font-weight:600}
/* dashboard */
.dgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:14px;margin:14px 0}
.bar{height:10px;border-radius:5px;background:#eef0f4;overflow:hidden}
.bar>i{display:block;height:100%;background:var(--accent)}
.brow{display:grid;grid-template-columns:110px 1fr 70px;gap:10px;align-items:center;font-size:14px;margin:7px 0}
svg.trend{width:100%;height:auto;display:block}
@media (max-width:640px){
  header.site{padding:12px 16px}
  main{padding:14px 16px 60px}
  header.top{padding:8px 12px;gap:8px}
  header.top .title{flex-basis:100%;order:-1;font-size:14px}
  .stem{font-size:16px}
  .tools input{min-width:0;flex:1}
  .choices.letters{grid-template-columns:repeat(5,1fr);gap:6px}
  .bottombar{padding:8px 12px calc(8px + env(safe-area-inset-bottom))}
  .brow{grid-template-columns:90px 1fr 60px}
  .viewseg button{padding:8px 13px}
}
/* topic notes */
.note{line-height:1.65}
.note .lead{font-size:16px}
.note h3{font-size:15px;margin:16px 0 6px;text-transform:uppercase;letter-spacing:.03em;color:var(--muted)}
.note ul{padding-left:22px;margin:0}
.note li{margin:4px 0}
.note .ex{border-left:3px solid var(--accent);background:#f8faff;padding:6px 14px;border-radius:0 8px 8px 0}
.note .ex summary{cursor:pointer;color:var(--accent)}
.dom{margin:22px 0 8px;font-size:18px}
.tcards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:10px}
.tcard{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:12px 14px;text-decoration:none;color:inherit;display:flex;flex-direction:column;gap:6px}
.tcard:hover{border-color:#b9bec8;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.tcard .nm{font-weight:600}
.tcard .ds{font-size:13px;color:var(--muted)}
.mexam{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0 12px}
.figmiss{display:inline-block;margin:8px 0;padding:6px 12px;border:1px dashed var(--line);border-radius:8px;font-size:13px}

/* physics: questions are images cut from the exam booklets */
.qstem img.qimg{display:block;max-width:100%;height:auto;margin:0 0 10px;background:#fff;border-radius:6px;cursor:zoom-in}
.qstem img.qimg.shared{margin-bottom:14px;padding-bottom:10px;border-bottom:1px dashed var(--line)}
.sg img.qimg{display:block;max-width:100%;height:auto;margin:0 0 12px;background:#fff;border:1px solid var(--line);border-radius:6px;cursor:zoom-in}
.expl .body p{margin:0 0 10px}
/* topic simulations (sims/*.js) */
.sims{margin:18px 0 6px}
.sim{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;margin:0 0 16px}
.sim-h{margin:0 0 8px;font-size:15px}
.sim-cv{width:100%}
.sim-cv canvas{display:block;width:100%;border-radius:6px;border:1px solid var(--line);touch-action:pan-y}
.sim-ctl{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;margin-top:10px}
.sim-sl{display:flex;align-items:center;gap:6px;font-size:13px}
.sim-sl input[type=range]{width:120px}
.sim-sl output{min-width:52px;color:var(--muted);font-variant-numeric:tabular-nums}
.sim-sl select{font:inherit;padding:3px 6px;border:1px solid var(--line);border-radius:6px;background:var(--card)}
.sim-tg{font-size:13px;display:flex;align-items:center;gap:5px}
.sim-cap{margin:10px 0 0;font-size:13px;color:var(--muted)}
@media (pointer:coarse){.sim-sl input[type=range]{width:150px;height:28px}}
/* interactive explainers on skill pages (explore/core.js) */
.xp-body{margin:4px 0 6px}
.xp-cap{color:var(--muted);font-size:13.5px;margin:10px 0 0}
.xp-text{font:16px/1.75 Georgia,"Times New Roman",serif;background:#fffdf7;border:1px solid var(--line);border-radius:8px;padding:12px 16px;margin:8px 0;overflow-x:auto}
.xp-text .ln{display:flex;gap:12px;min-height:1.75em}
.xp-text .ln.gap{min-height:.9em}
.xp-text .num{flex:0 0 22px;text-align:right;color:#a3a8b3;font:12px/2.3 -apple-system,"Segoe UI",Roboto,Arial,sans-serif;user-select:none}
.xp-text.prose .ln{display:block}
.xp-text .w{border-radius:3px;transition:background-color .35s,box-shadow .35s,color .35s;padding:0 1px}
.xp-text .w.h1{background:#ffe98a}.xp-text .w.h2{background:#cfe0ff}.xp-text .w.h3{background:#c9f0d3}
.xp-text .w.h4{background:#ffd0dc}.xp-text .w.h5{background:#e4d6ff}.xp-text .w.h6{background:#ffdcb8}
.xp-ctrl{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:8px 0}
.xp-ctrl .btn.on{border-color:var(--accent);background:var(--accent-soft)}
.xp-step{background:var(--accent-soft);border-radius:8px;padding:10px 14px;margin:6px 0;font-size:15px}
.xp-step.in{animation:xpIn .35s ease}
@keyframes xpIn{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
.xp-note{color:var(--muted);font-size:14px;margin:6px 0}
.xp-quiz{display:grid;gap:6px;margin:8px 0}
.xp-opt{text-align:left;font:inherit;padding:8px 12px;border:1.5px solid var(--line);border-radius:8px;background:var(--card);color:var(--ink);cursor:pointer}
.xp-opt b{margin-right:6px}
.xp-opt.ok{border-color:var(--ok);background:var(--ok-soft)}.xp-opt.bad{border-color:var(--bad);background:var(--bad-soft)}
.xp-fb{font-size:14px;padding:4px 2px}.xp-fb.ok{color:var(--ok)}.xp-fb.bad{color:var(--bad)}
@media (prefers-reduced-motion:reduce){.xp-step.in{animation:none}.xp-text .w{transition:none}}
.xp .sim-h{font-weight:600;font-size:15.5px}
/* passage tools (annot.js): annotation pad, expert layer, tone timeline, character map, sound view */
.ap-bar{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:0 0 8px;position:sticky;top:-10px;background:#fff;z-index:2;padding:4px 0}
.ap-bar .viewseg{margin:0}.ap-bar .viewseg button{padding:5px 12px;font-size:13px}
.ap-bar .btn.on{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}
.ap-tools{border:1px solid var(--line);border-radius:8px;padding:8px;margin:0 0 10px;background:#fcfcfd}
.ap-box{container-type:inline-size}
.ap-legend{display:flex;flex-wrap:wrap;gap:5px;align-items:center;margin:0 0 6px}
.ap-chip{font-size:11.5px;padding:1px 7px;border-radius:999px;color:#1c1e24;white-space:nowrap}
.c-img{--hc:#ffe98a}.c-dic{--hc:#cfe0ff}.c-fig{--hc:#e4d6ff}.c-shf{--hc:#ffcf9e}.c-snd{--hc:#c9f0d3}.c-key{--hc:#ffc9d6}
.x-img{--xc:#d4a800}.x-dic{--xc:#2f6fdc}.x-fig{--xc:#7e57c2}.x-shf{--xc:#e8590c}.x-snd{--xc:#2b9348}.x-key{--xc:#d6336c}
.ap-chip[class*="c-"]{background:var(--hc)}
.ap-intro{font-style:italic;color:var(--muted);font-size:14px;margin:4px 0 8px}
.ap-title{font:600 17px Georgia,"Times New Roman",serif;text-align:center;margin:6px 0}
.ap-text{font:16px/1.75 Georgia,"Times New Roman",serif;color:var(--ink);-webkit-user-select:text;user-select:text}
.ap-ln{display:grid;grid-template-columns:28px minmax(0,1fr) minmax(0,150px);gap:10px;align-items:start;border-radius:4px;transition:background-color .4s}
.ap-ln.gap{min-height:.8em}
.ap-ln.seg{background:#fff1c7;box-shadow:-4px 0 0 #f0b400}
.ap-num{color:#a3a8b3;text-align:right;font:12px/2.3 -apple-system,"Segoe UI",Roboto,Arial,sans-serif;user-select:none;-webkit-user-select:none}
.ap-text.prose .ap-tx{white-space:normal}
.ap-text .w{border-radius:3px;padding:0 1px;transition:background-color .3s,box-shadow .3s;cursor:text}
.ap-text .w.hl{background:var(--hc);cursor:pointer}
.ap-text .w.ex{box-shadow:inset 0 -3px 0 var(--xc)}
.ap-text .w.say{background:#2457c5;color:#fff}
.ap-text .w.rhy{text-decoration:underline 3px;text-underline-offset:4px}
.ap-sup{font:600 10px sans-serif;color:var(--accent);margin-left:1px;user-select:none}
.ap-mg{display:flex;flex-direction:column;gap:3px;padding-top:3px}
.ap-mnote{font:12px/1.35 -apple-system,"Segoe UI",Roboto,Arial,sans-serif;text-align:left;border:0;border-left:3px solid var(--hc);background:#fafafa;padding:2px 6px;border-radius:0 5px 5px 0;color:var(--ink)}
.ap-mnote b{color:var(--accent);margin-right:3px}
.ap-notes{display:none}
@container (max-width:520px){.ap-ln{grid-template-columns:24px minmax(0,1fr) auto}.ap-mg .ap-mnote{display:none}.ap-notes{display:grid;gap:4px;margin-top:10px}}
.ap-fn{font-size:12.5px;color:var(--muted);border-top:1px solid var(--line);margin-top:10px;padding-top:6px}
.ap-pal{position:absolute;z-index:60;background:var(--card);border:1px solid var(--line);border-radius:10px;box-shadow:0 6px 22px rgba(0,0,0,.16);padding:6px;display:flex;gap:5px;align-items:center}
.ap-pal.edit{flex-direction:column;align-items:stretch;width:270px;gap:6px}
.ap-pal textarea{font:inherit;font-size:14px;border:1px solid var(--line);border-radius:6px;padding:6px;resize:vertical;width:100%}
.ap-pal .ap-row{display:flex;gap:6px}
.ap-sw{width:30px;height:30px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px #c9ccd4;background:var(--hc);padding:0;margin:0 2px}
.ap-sw.on{box-shadow:0 0 0 2px var(--ink)}
.ap-x{border:0;background:transparent;color:var(--muted);width:28px;height:28px}
@media (pointer:coarse){.ap-sw{width:36px;height:36px}}
.ap-report:not(:empty){margin-top:12px;border-top:1px solid var(--line);padding-top:10px;font-size:14px}
.ap-rephead{margin-bottom:6px}.ap-cats{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:6px}
.ap-exlist{list-style:none;padding:0;margin:0;display:grid;gap:5px}
.ap-exlist li{padding:5px 8px;border-radius:7px;background:#f7f8fa;cursor:pointer;line-height:1.45}
.ap-exlist li.got{background:var(--ok-soft)}.ap-exlist li:hover{outline:1px solid #c9ccd4}
.ap-st{display:inline-block;width:18px;font-weight:700}.got .ap-st{color:var(--ok)}.miss .ap-st{color:#9aa1ad}
.ap-sndbar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:space-between;background:#f3f6fd;border-radius:8px;padding:5px 8px;margin:0 0 8px}
.ap-rh{display:inline-block;min-width:20px;text-align:center;font:700 12px/20px sans-serif;border-radius:5px;color:#fff;align-self:flex-start}
.ap-rh.solo{color:#9aa1ad;background:none}
.r0{--rc:#2457c5}.r1{--rc:#c2410c}.r2{--rc:#1f8a4c}.r3{--rc:#8e44ad}.r4{--rc:#b8860b}.r5{--rc:#0e7c86}.r6{--rc:#c62828}.r7{--rc:#5b6170}
.ap-rh[class*=" r"]{background:var(--rc)}.ap-text .w.rhy{text-decoration-color:var(--rc)}
.ap-enj{color:#d9480f;font:700 13px sans-serif;margin-left:4px;user-select:none}
.ap-cae{color:#8e44ad;font:700 13px sans-serif;margin:0 2px;user-select:none}
/* tone timeline + character map */
.tl-wrap{overflow-x:auto}
.tl-svg,.cm-svg{display:block;font-family:-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
.tl-ax{font-size:11px;fill:#7b8190}.tl-lb{font-size:11.5px;fill:#1c1e24;font-weight:600;paint-order:stroke;stroke:#fff;stroke-width:3px}
.tl-sh{font-size:11px;fill:#d9480f;font-weight:600}
.tl-band{fill:transparent;cursor:pointer}.tl-band:hover{fill:rgba(36,87,197,.06)}
.tl-pt{cursor:pointer;outline:none}.tl-pt circle{transition:r .2s}.tl-pt:hover circle,.tl-pt:focus circle,.tl-pt.on circle{r:10;stroke:#1c1e24}
.tl-path{stroke-dasharray:2000;stroke-dashoffset:2000;animation:tlDraw 1.4s ease forwards}
@keyframes tlDraw{to{stroke-dashoffset:0}}
@media (prefers-reduced-motion:reduce){.tl-path{animation:none;stroke-dasharray:none;stroke-dashoffset:0}}
.tl-sum{margin:6px 2px;color:#3b4252}.tl-info{margin:2px}
.cm-el{font-size:11px;fill:#5b6170;paint-order:stroke;stroke:#fff;stroke-width:4px}
.cm-ini{font-size:13px;fill:#fff;font-weight:700;pointer-events:none}.cm-nm{font-size:12px;fill:#1c1e24;font-weight:600}
.cm-node{cursor:pointer}.cm-info div{padding:2px 4px;border-radius:5px}.cm-info div.on{background:var(--accent-soft)}
/* topic page passage picker */
.ap-picker{margin:16px 0}.ap-pick{font:inherit;padding:6px 10px;border:1px solid var(--line);border-radius:8px;max-width:100%;background:#fff}
.ap-pview{display:grid;grid-template-columns:minmax(0,1fr);gap:12px;margin-top:10px}
.ap-ptext{max-height:460px;overflow:auto;border:1px solid var(--line);border-radius:8px;padding:8px 10px;background:#fffdf7}
.ap-ptext .ap-ln{grid-template-columns:26px minmax(0,1fr)}.ap-ptext .ap-mg{display:none}
@media (max-width:820px){.ap-pview{grid-template-columns:1fr}}
/* sound & meter explainers (explore/sound.js) */
.xm-box{font:17px/1 Georgia,"Times New Roman",serif;background:#fffdf7;border:1px solid var(--line);border-radius:8px;padding:10px 12px;margin:8px 0;overflow-x:auto}
.xm-line{display:flex;flex-wrap:wrap;align-items:flex-end;gap:2px 0;margin:6px 0 10px}
.xm-word{display:inline-flex;margin-right:.45em}
.xm-syl{display:inline-flex;flex-direction:column;align-items:center;padding:2px 1px;border-radius:5px;transition:transform .15s,background-color .2s;cursor:default;position:relative}
.xm-mark{font:600 13px/16px -apple-system,"Segoe UI",Arial,sans-serif;color:#9aa1ad;height:16px}
.xm-t{line-height:1.5}
.xm-syl.st .xm-t{font-weight:700;color:#1d49a6}.xm-syl.st .xm-mark{color:#d6336c}
.xm-syl.footend{box-shadow:4px 0 0 -2px #c9ccd4}
.xm-syl.beat{background:#ffe98a;transform:translateY(-3px)}
.xm-syl.beat.st{background:#ffb703;transform:translateY(-6px) scale(1.12)}
.xm-syl[tabindex]{cursor:pointer;border:1px dashed #d0d4dc}
.xm-syl.pk{background:#cfe0ff}
.xm-syl.ok{background:var(--ok-soft)}.xm-syl.miss{background:#ffdcb8}.xm-syl.bad{background:var(--bad-soft)}
.xm-scheme{font:700 18px/1.4 ui-monospace,Consolas,monospace;letter-spacing:.12em;margin:6px 0}
.xm-scheme span{display:inline-block;min-width:1.1em;text-align:center;border-radius:4px;color:#9aa1ad}
.xm-scheme span.on{color:#1c1e24}
.xm-scheme .h1{background:#ffe98a}.xm-scheme .h2{background:#cfe0ff}.xm-scheme .h3{background:#c9f0d3}.xm-scheme .h4{background:#ffd0dc}.xm-scheme .h5{background:#e4d6ff}.xm-scheme .h6{background:#ffdcb8}
.xm-enj{color:#d9480f;font:700 14px sans-serif}.xm-cae{color:#8e44ad;font:700 14px sans-serif}
@media (prefers-reduced-motion:reduce){.xm-syl{transition:none}}
.ap-text.poem .ap-tx{padding-left:1.2em;text-indent:-1.2em}
@container (max-width:420px){.ap-text{font-size:15px}.ap-ln{gap:6px}}

dl.terms{margin:6px 0 12px}dl.terms dt{font-weight:600;margin-top:8px}dl.terms dd{margin:2px 0 0 16px;color:var(--muted,#555)}

/* lang explainers c1-c4 (explore/c1.js ... c4.js; classes .lx-*) */
.lx-box{background:#fffdf7;border:1px solid var(--line);border-radius:8px;padding:10px 14px;margin:8px 0;font:15.5px/1.7 Georgia,"Times New Roman",serif;overflow-wrap:anywhere}
.lx-box.plain{background:var(--card)}
.lx-head{font-style:italic;color:var(--muted);font-size:14px;line-height:1.55;margin:4px 0 6px}
.lx-lbl{font:600 11.5px/1.4 -apple-system,"Segoe UI",Roboto,Arial,sans-serif;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin:10px 0 4px}
.lx-s{border-radius:3px;padding:1px 2px;transition:background-color .35s,box-shadow .3s}
.lx-s.pick{cursor:pointer;outline:none}
.lx-s.pick:hover{box-shadow:0 0 0 1px #c9ccd4}.lx-s.pick:focus-visible{box-shadow:0 0 0 2px var(--accent)}
.lx-s.wrong{box-shadow:0 0 0 2px var(--bad)}.lx-s.right{box-shadow:0 0 0 2px var(--ok)}
.lx-s.dim{opacity:.4}
.lx-n{font:600 11px/1 -apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--muted);margin-right:3px}
.lx-k1{background:#ffe98a}.lx-k2{background:#cfe0ff}.lx-k3{background:#c9f0d3}.lx-k4{background:#ffd0dc}.lx-k5{background:#e4d6ff}.lx-k6{background:#ffdcb8}
.lx-new{animation:lxIn .4s ease}
@keyframes lxIn{from{opacity:.35;transform:translateY(3px)}to{opacity:1;transform:none}}
.lx-legend{display:flex;flex-wrap:wrap;gap:6px 12px;font-size:12.5px;color:var(--muted);margin:4px 0}
.lx-legend span{display:inline-flex;align-items:center;gap:4px}.lx-legend i{display:inline-block;width:12px;height:12px;border-radius:3px}
.lx-card{border:1px solid var(--line);border-radius:8px;padding:8px 12px;margin:8px 0;background:var(--card);font-size:14px}
.lx-card .q{font:15px/1.6 Georgia,"Times New Roman",serif;margin-bottom:4px}
.lx-card .xp-ctrl{margin:6px 0 2px;gap:6px}
.lx-row{display:flex;flex-wrap:wrap;gap:2px 10px;padding:5px 0;border-bottom:1px solid var(--line);transition:background-color .4s}
.lx-row:last-child{border-bottom:0}
.lx-row b{flex:0 0 92px;font-size:12.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.03em;padding-top:1px}
.lx-row span{flex:1 1 180px;min-width:0}
.lx-row.flash{background:var(--accent-soft)}
.lx-fb{font-size:14px;margin-top:6px}.lx-fb.ok{color:var(--ok)}.lx-fb.bad{color:var(--bad)}.lx-fb.mid{color:var(--warn)}
.lx-chip{display:inline-block;font:600 12px/1.3 -apple-system,"Segoe UI",Roboto,Arial,sans-serif;padding:3px 8px;border-radius:999px;margin:2px 4px 2px 0;background:var(--line);color:var(--ink)}
.lx-chip.ok{background:var(--ok-soft);color:var(--ok)}.lx-chip.bad{background:var(--bad-soft);color:var(--bad)}.lx-chip.mid{background:var(--warn-soft);color:var(--warn)}
.lx-meter{margin:6px 0;font-size:13px}
.lx-meter .bar{height:12px;border-radius:6px;background:var(--line);overflow:hidden;margin-top:3px}
.lx-meter .bar div{height:100%;width:0;border-radius:6px;transition:width .45s,background-color .45s}
.lx-sel{font:inherit;font-size:14px;max-width:100%;padding:3px 4px;border:1.5px solid var(--accent);border-radius:6px;background:var(--card);color:var(--ink)}
.lx-sel.ok{border-color:var(--ok);background:var(--ok-soft)}.lx-sel.bad{border-color:var(--bad);background:var(--bad-soft)}.lx-sel.mid{border-color:var(--warn);background:var(--warn-soft)}
.lx-range{width:100%;max-width:420px;margin:6px 0}
.lx-out{display:grid;gap:6px;margin:8px 0}
.lx-out>div{border-left:4px solid var(--accent);background:var(--card);border-radius:0 8px 8px 0;padding:6px 10px;font-size:14px;box-shadow:0 0 0 1px var(--line)}
.lx-out>div small{display:block;color:var(--muted);font-size:11.5px;text-transform:uppercase;letter-spacing:.04em}
.xp-ctrl .btn.lx-tog.on{border-color:var(--accent);background:var(--accent-soft)}
@media (max-width:420px){.lx-box{padding:8px 10px;font-size:15px}.lx-row b{flex-basis:100%}}
@media (prefers-reduced-motion:reduce){.lx-new{animation:none}.lx-s,.lx-row,.lx-meter .bar div{transition:none}}
.lx-swap{-webkit-box-decoration-break:clone;box-decoration-break:clone;border-bottom:2px dashed var(--accent);background:var(--accent-soft);border-radius:3px;padding:0 3px;cursor:pointer;transition:background-color .3s}
.lx-swap:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
.lx-swap.ok{border-bottom-color:var(--ok);background:var(--ok-soft)}.lx-swap.mid{border-bottom-color:var(--warn);background:var(--warn-soft)}.lx-swap.bad{border-bottom-color:var(--bad);background:var(--bad-soft)}
/* end lang explainers c1-c4 */
/* lang explainers c5-c8 (explore/c5.js ... c8.js; classes .lz-*) */
.sim .w.h1,.sim :is(.lz-chip,.lz-tap).h1,.lz-rbar i.h1{background:#ffe98a}.sim .w.h2,.sim :is(.lz-chip,.lz-tap).h2,.lz-rbar i.h2{background:#cfe0ff}
.sim .w.h3,.sim :is(.lz-chip,.lz-tap).h3,.lz-rbar i.h3{background:#c9f0d3}.sim .w.h4,.sim :is(.lz-chip,.lz-tap).h4,.lz-rbar i.h4{background:#ffd0dc}
.sim .w.h5,.sim :is(.lz-chip,.lz-tap).h5,.lz-rbar i.h5{background:#e4d6ff}.sim .w.h6,.sim :is(.lz-chip,.lz-tap).h6,.lz-rbar i.h6{background:#ffdcb8}
.sim .w{border-radius:3px;transition:background-color .35s,box-shadow .35s}
.lz-chip{color:#1c1e24;padding:0 5px;border-radius:4px;font-size:.95em;background:#eef0f4}
.lz-ask{margin:14px 0 4px;font-size:14.5px}
.lz-src{font-size:13px;color:var(--muted);margin:4px 0}
.lz-seg .ln+.ln,.lz-gb .ln+.ln{margin-top:.5em}
.lz-big{font-size:17px}
.lz-tap{cursor:pointer;border-radius:4px;transition:background-color .3s,opacity .3s,box-shadow .3s}
.lz-tap:hover{box-shadow:0 0 0 1px #c9ccd4}.lz-tap:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
.lz-tap.ok{background:var(--ok-soft)}.lz-tap.bad{background:var(--bad-soft);box-shadow:0 0 0 2px var(--bad)}
.lz-tap.gone{text-decoration:line-through;opacity:.35}
.lz-n{font:600 10.5px/1 -apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--muted);margin:0 2px 0 1px}
.lz-list{display:grid;grid-template-columns:minmax(0,1fr);gap:6px;margin:8px 0}
.lz-card.col .lz-sel{width:100%}
.lz-card.col>.lz-chip{align-self:flex-start}
.lz-card{display:flex;gap:8px;align-items:center;padding:8px 10px;border:1.5px solid var(--line);border-radius:8px;background:var(--card);font-size:14.5px;line-height:1.5;transition:background-color .3s,border-color .3s}
.lz-card.col{flex-direction:column;align-items:stretch}
.lz-card.ok{border-color:var(--ok);background:var(--ok-soft)}.lz-card.bad{border-color:var(--bad);background:var(--bad-soft)}.lz-card.warn{border-color:#e8a33d;background:#fff7ea}
.lz-card.end{border-style:dashed}
.lz-t{flex:1;min-width:0}
.lz-mv{display:flex;gap:4px;flex:0 0 auto}
.lz-badge{display:inline-block;min-width:22px;height:22px;border-radius:11px;background:#e6e8ee;color:#555;font:600 12px/22px Arial,sans-serif;text-align:center;padding:0 5px;margin-right:4px;vertical-align:1px}
.lz-sel{font:inherit;font-size:14px;padding:4px 6px;border:1.5px solid var(--line);border-radius:6px;background:var(--card);color:var(--ink);max-width:100%;min-width:0}
.lz-sel.ok{border-color:var(--ok);background:var(--ok-soft)}.lz-sel.bad{border-color:var(--bad);background:var(--bad-soft)}
.lz-sel.lz-wide{width:100%}
.lz-two{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,2fr);gap:10px;align-items:start}
@media (min-width:641px){.lz-two .lz-flow{position:sticky;top:8px}}
@media (max-width:640px){.lz-two{grid-template-columns:minmax(0,1fr)}}
.lz-flow{display:grid;gap:6px;margin:8px 0}
.lz-pane{border:1px solid var(--line);border-radius:8px;padding:6px 10px;background:#fafbfc;font-size:13.5px;transition:opacity .35s,background-color .35s,border-color .35s}
.lz-pane h4{margin:0 0 2px;font-size:11.5px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.lz-pane.dim{opacity:.45}.lz-pane.on{border-color:var(--accent);background:var(--accent-soft)}
.lz-outline{display:flex;flex-wrap:wrap;gap:4px;align-items:center;margin:4px 0 8px}
.lz-tag{font-size:12.5px;padding:2px 8px;border-radius:999px;background:var(--ok-soft);color:var(--ok);white-space:nowrap}
.lz-tag.acc{background:var(--accent-soft);color:var(--accent)}.lz-tag.dim{background:#eef0f4;color:#9aa1ad}
.lz-arr{color:#9aa1ad;font-size:12px}
.lz-hide{filter:blur(4px);transition:filter .5s;user-select:none}.lz-hide.show{filter:none;user-select:auto}
.lz-wrap{gap:6px}
.xp-ctrl .btn.lz-ok{border-color:var(--ok);background:var(--ok-soft);color:var(--ok)}.xp-ctrl .btn.lz-bad{border-color:var(--bad);background:var(--bad-soft);color:var(--bad)}
.lz-q{font-size:14.5px;margin:8px 0 0}
.lz-blank{color:#9aa1ad;font:13px -apple-system,"Segoe UI",Roboto,Arial,sans-serif;border-bottom:1.5px dashed #c9ccd4}
.lz-checks{display:flex;flex-wrap:wrap;gap:6px;margin:4px 0 8px}
.lz-check{font-size:12.5px;padding:2px 8px;border-radius:999px;background:#eef0f4;color:#5b6170;transition:background-color .3s}
.lz-check.ok{background:var(--ok-soft);color:var(--ok)}
.lz-layer{margin:10px 0 4px}.lz-lq{font-weight:600;font-size:14px;margin-bottom:4px}
.lz-seg3{display:flex;flex-wrap:wrap;gap:4px}.lz-seg3 .btn.on{border-color:var(--accent);background:var(--accent-soft)}
.lz-ratio{margin:6px 0}
.lz-rbar{display:flex;height:14px;border-radius:7px;overflow:hidden;background:#eceef2;margin:3px 0;flex:1;min-width:80px}
.lz-rbar i{display:block;height:100%;transition:flex-grow .5s}
.lz-rel{display:flex;flex-wrap:wrap;align-items:center;gap:6px 8px;margin:6px 0;font-size:14px}
.lz-box1{display:inline-block;width:26px;height:26px;border-radius:6px;border:1.5px solid var(--line);text-align:center;font:600 13px/23px Arial,sans-serif;background:var(--card)}
.lz-sym{font:700 18px/1 Georgia,serif;min-width:28px;text-align:center;color:var(--accent)}
.lz-form{display:flex;flex-wrap:wrap;gap:8px 16px;margin:8px 0;font-size:14px}.lz-form label{display:flex;gap:6px;align-items:center;flex-wrap:wrap;min-width:0}
.lz-m,.lz-main{text-decoration:underline 2px var(--accent);text-underline-offset:4px}
.lz-s,.lz-sub{color:#6b7280}
.lz-mainkey{text-decoration:underline 2px var(--accent);text-underline-offset:3px}
.lz-tug{display:flex;flex-wrap:wrap;align-items:center;gap:4px 8px;margin:6px 0;color:var(--muted)}.lz-tug .lz-rbar{flex:1 1 120px}
.lz-mark{font-weight:700;padding:0 2px}
.lz-meters{display:grid;gap:4px;margin:6px 0}
.lz-mrow{display:flex;align-items:center;gap:8px;font-size:13px}.lz-mrow span{flex:0 0 58px;color:var(--muted)}
.lz-meter{flex:1;height:10px;border-radius:5px;background:#eceef2;overflow:hidden}
.lz-meter i{display:block;height:100%;background:#e8590c;transition:width .4s}.lz-meter.ok i{background:var(--ok)}
.lz-lab{min-width:52px}
.lz-bars{display:grid;gap:3px;margin:4px 0 8px}
.lz-brow{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted)}.lz-brow span{flex:0 0 14px;text-align:right}
.lz-brow i{display:block;height:12px;border-radius:3px;background:var(--accent);transition:width .45s}.lz-brow b{font-weight:600}
.lz-pair{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0;font-size:14px}.lz-pair .lz-chip{padding:3px 8px}
.lz-range{flex:1;min-width:100px;max-width:320px}
.lz-tblwrap{overflow-x:auto;margin:8px 0}
.lz-tbl{border-collapse:collapse;font-size:12.5px;min-width:100%}
.lz-tbl th,.lz-tbl td{border:1px solid var(--line);padding:3px 4px;text-align:center}
.lz-tbl tbody th{text-align:left;font-weight:600;white-space:nowrap}
.lz-tbl thead th{font-weight:600;color:var(--muted)}
.lz-tbl tr.on{background:var(--accent-soft)}
.lz-tbl .ok{color:var(--ok);font-weight:700}.lz-tbl .bad{color:var(--bad);font-weight:700}
@media (max-width:420px){.lz-card{padding:7px 8px;font-size:14px;gap:6px}.lz-mv{flex-direction:column}.lz-big{font-size:16px}}
@media (prefers-reduced-motion:reduce){.sim .w,.lz-tap,.lz-card,.lz-pane,.lz-rbar i,.lz-meter i,.lz-brow i,.lz-hide{transition:none}}
/* end lang explainers c5-c8 */
/* phone image reader (common.js zoomImage): scanned prompt, source and guideline pages at print size, pan + zoom */
body.zv-on{overflow:hidden}
.zv{position:fixed;inset:0;z-index:60;background:#fff;display:flex;flex-direction:column}
.zv-bar{display:flex;align-items:center;gap:6px;padding:8px 10px calc(8px);border-bottom:1px solid var(--line);background:var(--card);flex-wrap:wrap}
.zv-b{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:8px;min-width:40px;height:38px;padding:0 10px;font:600 15px/36px inherit;text-decoration:none;text-align:center}
.zv-b.zv-x{margin-left:auto;background:var(--ink);color:#fff;border-color:var(--ink)}
.zv-pct{min-width:44px;text-align:center;font-variant-numeric:tabular-nums;color:var(--muted);font-size:14px}
.zv-sc{flex:1;overflow:auto;-webkit-overflow-scrolling:touch;padding:6px;overscroll-behavior:contain}
.zv-sc img{display:block;max-width:none;height:auto;background:#fff}
.zoomhint{display:none}
@media (max-width:700px){.zoomhint{display:block;margin:-2px 0 10px;font-size:13px;color:var(--muted)}}
/* Prep2College scoring notes (build.py notes_html), laid out like a College Board 6-point rubric page */
.sgdoc{background:#fff;border:1px solid var(--line);border-radius:6px;margin:0 0 12px;font-size:14.5px;line-height:1.5;color:#1c1e24;overflow:hidden}
.sgdoc p{margin:4px 0 8px}
.sgdoc ul{margin:4px 0 10px;padding-left:20px}
.sgdoc li{margin:2px 0}
.sgdoc ul.ex li{font-style:italic}
.sgd-top{display:flex;justify-content:space-between;gap:10px;background:#cfe6f7;padding:8px 12px;font-weight:700;font-size:17px}
.sgd-stamp{margin:10px 12px 0;padding:6px 10px;border:2px solid var(--warn);color:var(--warn);background:var(--warn-soft);font-weight:700;border-radius:6px;display:inline-block}
.sgd-ask,.sgd-scale{margin:10px 12px}
.sgd-scale{font-size:13.5px;color:#3b4252;background:#f4f5f7;border-radius:6px;padding:8px 10px}
.sgd-row{display:grid;grid-template-columns:104px minmax(0,1fr);border-top:1px solid #9fb8cc;margin-top:12px}
.sgd-rc{background:#cfe6f7;padding:8px;text-align:center;display:flex;flex-direction:column;gap:2px;font-size:13.5px;border-right:1px solid #9fb8cc}
.sgd-body{min-width:0}
.sgd-h{background:#cfe6f7;text-align:center;font-weight:700;padding:5px 8px;border-bottom:1px solid #9fb8cc}
.sgd-body .sgd-h:not(:first-child){border-top:1px solid #9fb8cc}
.sgd-cols{display:grid}
.sgd-cols.c2{grid-template-columns:repeat(2,minmax(0,1fr))}
.sgd-cols.c5{grid-template-columns:repeat(5,minmax(0,1fr))}
.sgd-cols>div{padding:8px 10px;border-right:1px solid #d5dee6;min-width:0}
.sgd-cols>div:last-child{border-right:0}
.sgd-body .sgd-cols+.sgd-h,.sgd-body .sgd-note{border-top:1px solid #d5dee6}
.sgd-note,.sgd-extra{margin:0;padding:8px 10px;font-size:13.5px;background:#f2f8fc}
.sgd-extra{border-top:1px solid #d5dee6}
.sgd-miss{border-top:1px solid #9fb8cc;margin-top:12px;padding:10px 12px;background:#fbf7ee}
.sgd-miss>b{display:block;margin-bottom:2px}
h3.sgd-after{margin:18px 0 8px;font-size:16px}
@media (max-width:860px){.sgd-cols.c5{grid-template-columns:minmax(0,1fr)}.sgd-cols.c5>div{border-right:0;border-bottom:1px solid #d5dee6}.sgd-cols.c5>div:last-child{border-bottom:0}}
@media (max-width:600px){.sgd-row{grid-template-columns:minmax(0,1fr)}.sgd-rc{flex-direction:row;justify-content:center;gap:6px;border-right:0;border-bottom:1px solid #9fb8cc}
  .sgd-cols.c2{grid-template-columns:minmax(0,1fr)}.sgd-cols.c2>div{border-right:0;border-bottom:1px solid #d5dee6}.sgd-cols.c2>div:last-child{border-bottom:0}.sgdoc{font-size:14px}}