*{box-sizing:border-box}
body{margin:0;background:#fff;color:#111;
 font:15px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
.wrap{max-width:880px;margin:0 auto;padding:22px 20px 110px}
h1{font-size:1.5rem;margin:0 0 6px;font-weight:700}
h2{font-size:1.15rem;margin:26px 0 8px;font-weight:700}
h3{font-size:1rem;margin:20px 0 6px;font-weight:700}
.sub{color:#666;font-size:.93rem;margin:0 0 6px}
hr{border:0;border-top:1px solid #ccc;margin:18px 0}
.hz,.zh{font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Heiti SC",sans-serif}
a{color:#111}
/* ---------- thanh điều hướng ---------- */
.nav{position:sticky;top:0;z-index:30;background:#fff;border-bottom:1px solid #ccc;
 padding:8px 0 7px;margin-bottom:14px;display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.nav button{font:inherit;font-size:.85rem;padding:5px 11px;border-radius:5px;cursor:pointer;
 border:1px solid #ccc;background:#fff;color:#444}
.nav button.on{border-color:#111;background:#111;color:#fff}
.nav .sp{flex:1}
button{font:inherit}
.btn{font-size:.85rem;padding:6px 13px;border-radius:5px;cursor:pointer;border:1px solid #111;background:#111;color:#fff}
.btn.ghost{background:#fff;color:#111}
.btn:disabled{opacity:.4;cursor:default}
.hzact{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}
.hzact .btn{flex:1 1 165px;padding:9px 12px;font-size:.9rem;text-align:center}
.mini{font-size:.78rem;padding:3px 9px;border-radius:5px;cursor:pointer;border:1px solid #bbb;background:#fff;color:#333}
.mini:hover{background:#f5f5f5}
.sec{display:none}
.sec.on{display:block}
/* ---------- hộp, bảng, ghi chú ---------- */
.box{border:1px solid #ccc;border-radius:8px;padding:14px 16px;margin:12px 0}
.box.dark{border-color:#111}
.note{background:#f7f7f7;border-left:3px solid #999;padding:9px 13px;margin:10px 0;font-size:.92rem}
.warn{background:#fdecea;border-left:3px solid #721f24;padding:9px 13px;margin:10px 0;font-size:.92rem}
.good{background:#e6f4ea;border-left:3px solid #1a7f37;padding:9px 13px;margin:10px 0;font-size:.92rem}
table{border-collapse:collapse;margin:10px 0;font-size:.9rem;width:100%}
th,td{border:1px solid #ccc;padding:5px 10px;text-align:left;vertical-align:top}
th{font-weight:700;background:#f7f7f7}
.tag{font-size:.7rem;color:#777;text-transform:uppercase;letter-spacing:.06em}
ul,ol{padding-left:22px;margin:8px 0}
li{margin:3px 0}
/* ---------- công cụ ---------- */
.tools{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:10px 0 4px;
 padding:9px 0;border-top:1px solid #eee;border-bottom:1px solid #eee}
.tools input[type=text]{font:inherit;font-size:.88rem;padding:6px 10px;border:1.5px solid #bbb;border-radius:6px;min-width:150px;flex:1}
.tools input[type=text]:focus{outline:2px solid #8aa4bd;border-color:#8aa4bd}
.tools select{font:inherit;font-size:.85rem;padding:6px 8px;border:1.5px solid #bbb;border-radius:6px;background:#fff}
.cnt{font-variant-numeric:tabular-nums;font-size:.84rem;color:#555;white-space:nowrap}
.pwr{-webkit-appearance:none;appearance:none;width:118px;height:18px;background:transparent;cursor:pointer;vertical-align:middle;margin:0 2px}
.pwr:focus{outline:none}
.pwr::-webkit-slider-runnable-track{height:4px;border-radius:3px;background:#ddd}
.pwr::-moz-range-track{height:4px;border-radius:3px;background:#ddd}
.pwr::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:16px;height:16px;margin-top:-6px;border-radius:50%;background:#111;border:2px solid #fff;box-shadow:0 1px 3px rgba(0,0,0,.35)}
.pwr::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:#111;border:2px solid #fff;box-shadow:0 1px 3px rgba(0,0,0,.35)}
.pwdot{display:inline-block;width:9px;height:9px;border-radius:50%;background:#111;vertical-align:middle;transition:width .08s,height .08s}
.pwv{display:inline-block;min-width:40px}
/* ---------- từ vựng ---------- */
.gh{font-size:.74rem;color:#777;text-transform:uppercase;letter-spacing:.07em;
 margin:20px 0 4px;padding-bottom:4px;border-bottom:1px solid #ccc}
.vw{display:grid;grid-template-columns:36px minmax(86px,auto) 116px 44px 1fr;gap:10px;align-items:baseline;
 padding:7px 8px;border-radius:6px;cursor:pointer;border-bottom:1px solid #f0f0f0}
.vw .no{color:#999;font-size:.78rem;font-variant-numeric:tabular-nums;text-align:right}
.vw:hover{background:#f5f5f5}
.vw .vt{font-size:1.32rem;font-weight:500;letter-spacing:.04em}
.vw .vt b{border-bottom:1px dotted #999}
.vw .py{color:#555;font-size:.88rem}
.vw .pos{color:#888;font-size:.72rem;text-transform:uppercase;letter-spacing:.04em}
.vw .mn{font-size:.93rem}
.vw.star{background:#fffbe6}
.vd{display:none;padding:6px 8px 14px 54px;border-bottom:1px solid #f0f0f0;font-size:.92rem}
.vd.on{display:block}
.vd .ex{margin:2px 0 8px}
.vd .ex .zh{font-size:1.06rem}
.vd .ex .vi{color:#555;font-size:.9rem}
.hidemean .mn,.hidemean .vi{visibility:hidden}
.hidepy .py{visibility:hidden}
@media(max-width:620px){
 .vw{grid-template-columns:30px minmax(76px,auto) 1fr;gap:4px 8px}
 .vw .pos{display:none}
 .vw .mn{grid-column:2/4}
}
/* ---------- ngữ pháp ---------- */
.gp{border-bottom:1px solid #eee;padding:14px 0}
.gp .gt{font-weight:700;font-size:1rem}
.gp .gs{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92rem;
 background:#f7f7f7;border:1px solid #e2e2e2;border-radius:6px;padding:7px 11px;margin:7px 0}
.gp .gd{font-size:.93rem;margin:6px 0}
.eg{margin:4px 0 4px 2px}
.eg .zh{font-size:1.06rem}
.eg .vi{color:#555;font-size:.89rem}
.eg .pyl{color:#666;font-size:.86rem;letter-spacing:.01em;margin:1px 0 0}
body.nopy .pyl{display:none}
.mini.pytg{white-space:nowrap}
/* ---------- phân biệt ---------- */
.cmp{display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:0;
 border:1px solid #ccc;border-radius:8px;overflow:hidden;margin:12px 0}
.cmp .cc{padding:12px 14px;border-right:1px solid #eee}
.cmp .cc:last-child{border-right:0}
.cmp .cx{font-size:2.3rem;line-height:1.1;cursor:pointer;border-bottom:1px dotted #aaa;display:inline-block}
.cmp .cp{color:#555;font-size:.86rem;margin:3px 0 2px}
.cmp .cv{font-size:.92rem}
.cmp .cw{font-size:.88rem;color:#444;margin-top:5px}
.cmp .cw .zh{font-size:1rem}
.tip{font-size:.88rem;background:#f7f7f7;border-top:1px solid #eee;padding:8px 14px;grid-column:1/-1}
.tip b{color:#111}
/* ---------- bài tập ---------- */
.q{margin:0 0 22px;padding-top:4px}
.qh{display:flex;gap:8px;align-items:baseline}
.qn{font-weight:700;white-space:nowrap}
.qt{flex:1}
.qt .zh{font-size:1.08rem}
.opts{margin:8px 0 0 26px}
label.opt{display:flex;gap:10px;align-items:flex-start;padding:6px 10px;border-radius:6px;
 cursor:pointer;border:1px solid transparent}
label.opt:hover{background:#f5f5f5}
label.opt .L{display:inline-flex;align-items:center;justify-content:center;flex:none;
 width:22px;height:22px;border:1.5px solid #999;border-radius:50%;font-size:.78rem;font-weight:700;color:#555}
label.opt .tx .zh{font-size:1.05rem}
label.opt.sel{background:#f0f4f8;border-color:#8aa4bd}
label.opt.sel .L{background:#111;border-color:#111;color:#fff}
label.opt.right{background:#e6f4ea;border-color:#9ccbab}
label.opt.right .L{background:#1a7f37;border-color:#1a7f37;color:#fff}
label.opt.wrong{background:#fdecea;border-color:#e6b0aa}
label.opt.wrong .L{background:#721f24;border-color:#721f24;color:#fff}
.txin{margin:8px 0 0 26px}
.txin input{font:inherit;width:260px;max-width:100%;padding:7px 10px;border:1.5px solid #999;border-radius:6px}
.txin input.right{border-color:#1a7f37;background:#e6f4ea}
.txin input.wrong{border-color:#721f24;background:#fdecea}
.mark{margin:7px 0 0 26px;font-size:.9rem;font-weight:600;display:none}
.mark.ok{color:#1a7f37}.mark.no{color:#721f24}
.exp{margin:5px 0 0 26px;font-size:.9rem;color:#444;display:none}
.exp.on{display:block}
.qbar{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin:6px 0 4px;
 padding:11px 0;border-top:1px solid #ccc}
.pass{margin:12px 0;padding:13px 15px;border:1px solid #ccc;border-radius:8px}
.pass .zh{font-size:1.1rem;line-height:1.95}
.pass .vi{display:none;color:#555;font-size:.9rem;margin-top:9px;border-top:1px dashed #ccc;padding-top:8px}
.tx-h{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin-bottom:6px}
.tx-h .n{font-size:.78rem;color:#999;font-variant-numeric:tabular-nums}
.tx-h .zh{font-size:1.2rem;font-weight:700}
.tx-h .vi2{color:#666;font-size:.9rem}
.tx-h .len{font-size:.74rem;color:#999;margin-left:auto}
.tx-body{font-size:1.12rem;line-height:2.1;text-align:justify}
.tx-k{font-size:.9rem;margin-top:10px;border-top:1px solid #eee;padding-top:8px}
.tx-k b{font-weight:700}
.tx-k span.w{display:inline-block;margin:2px 14px 2px 0}
.pass .vi.on{display:block}
.bank{display:flex;gap:7px;flex-wrap:wrap;margin:10px 0;padding:10px 12px;border:1px solid #ccc;border-radius:8px}
.bank span{font-size:1.02rem;padding:3px 9px;border:1px solid #ddd;border-radius:5px;background:#f7f7f7}
.res{display:none;border:1px solid #111;border-radius:8px;padding:14px 16px;margin:12px 0}
.res .sc{font-size:1.7rem;font-weight:700;margin:2px 0}
/* ---------- nghe & nói ---------- */
.au{margin:7px 0 0 26px;display:flex;gap:7px;flex-wrap:wrap;align-items:center}
.scr{display:none;margin:8px 0 0 26px;font-size:.93rem;padding:9px 12px;background:#f7f7f7;border-radius:6px}
.scr.on{display:block}
.voicebar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-size:.85rem;color:#555;
 padding:9px 0;border-top:1px solid #eee;border-bottom:1px solid #eee;margin:10px 0}
.ahelp{display:none;background:#f7f7f7;border-left:3px solid #999;padding:10px 13px;margin:8px 0;font-size:.9rem;line-height:1.6}
.sp-item{border-bottom:1px solid #eee;padding:13px 0}
.sp-item .pr{font-size:.95rem;margin-bottom:5px}
.sp-item .zh{font-size:1.12rem}
.sp-item .mo{display:none;margin-top:8px;padding:10px 12px;background:#f7f7f7;border-radius:6px;font-size:.93rem}
.sp-item .mo.on{display:block}
/* ---------- bảng viết chữ ---------- */
.ov{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:60;display:none;
 align-items:flex-start;justify-content:center;padding:24px 14px;overflow:auto}
.ov.on{display:flex}
.md{background:#fff;border:1px solid #111;border-radius:10px;max-width:660px;width:100%;padding:18px 20px 22px}
.md .mh{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:4px}
.md .mt{font-size:1.6rem;letter-spacing:.05em}
.md .mp{color:#555;font-size:.9rem}
.md .mv{font-size:.95rem;margin:2px 0 10px}
.chars{display:flex;gap:14px;flex-wrap:wrap;margin:8px 0}
.ch{border:1px solid #ddd;border-radius:8px;padding:8px}
.ch .cnv{width:132px;height:132px;background:
 linear-gradient(#eee,#eee) center/100% 1px no-repeat,
 linear-gradient(#eee,#eee) center/1px 100% no-repeat}
.ch .cb{display:flex;gap:5px;margin-top:7px;justify-content:center;flex-wrap:wrap}
.ch .ci{text-align:center;font-size:.78rem;color:#666;margin-top:4px}
.fail{font-size:.88rem;color:#721f24;margin:8px 0}
/* ---------- thẻ ghi nhớ ---------- */
.fc{text-align:center;padding:10px 0 4px}
.fc .fh{font-size:4rem;line-height:1.15;margin:14px 0 6px}
.fc .fp{color:#555;font-size:1rem;visibility:hidden}
.fc .fm{font-size:1.05rem;margin-top:6px;visibility:hidden}
.fc.show .fp,.fc.show .fm{visibility:visible}
.fc .fe{font-size:.95rem;color:#444;margin-top:10px;visibility:hidden}
.fc.show .fe{visibility:visible}
/* ---------- đề thi thử ---------- */
.exbar{display:flex;gap:9px;align-items:center;flex-wrap:wrap;padding:11px 13px;margin:12px 0;
 border:1px solid #111;border-radius:8px;background:#fafafa}
.exbar .sp{flex:1}
.exbar .clock{font-variant-numeric:tabular-nums;font-size:1.25rem;font-weight:700;letter-spacing:.02em}
/* ---------- luyện viết (lớp phủ) ---------- */
#wov{z-index:80;padding:0;background:#fff;align-items:stretch;justify-content:flex-start}
.wmd{background:#fff;border:0;border-radius:0;width:100%;max-width:none;min-height:100vh;padding:0 14px 30px}
.wgrid{display:flex;gap:16px;align-items:flex-start;flex-wrap:wrap}
.wgrid #wpstage{flex:1;min-width:300px;margin:0}
.wgrid .wp-ref{width:238px;flex:none;margin:0}
.wgrid.nosd .wp-ref{display:none}
.wmd{scrollbar-gutter:stable}
@media(max-width:860px){.wgrid .wp-ref{width:100%}}
.wmd .wh{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;
 position:sticky;top:0;z-index:6;background:#fff;padding:10px 0 8px;margin-bottom:8px;border-bottom:1px solid #eee}
.wmd .wh .wt{font-size:1.5rem;letter-spacing:.05em}
.wmd .wh .wp2{color:#555;font-size:.9rem}
.wmd .wh .wv{font-size:.92rem;color:#333}
.wmd .wh .sp{flex:1}
#wpstage{border:1px solid #ccc;border-radius:10px;padding:10px;margin:10px 0;background:#fff}
#wpstage:fullscreen{padding:14px 16px;overflow:auto;background:#fff}
#wpcv{border-radius:4px;cursor:crosshair;display:block;touch-action:none;margin:0 auto}
#wpcv.er{cursor:cell}
.wp-top{display:flex;gap:6px;flex-wrap:wrap;align-items:center;margin:0 0 10px}
.wp-top .sp{flex:1}
.wp-top #wpbig{font-size:1.5rem}
#wpstage>.wp-top:last-child{margin:10px 0 0}
.wp-ref{display:flex;gap:18px;flex-wrap:wrap;align-items:flex-start;border:1px solid #ccc;border-radius:10px;padding:12px;margin:12px 0}
.wp-ref>div:last-child{flex:1;min-width:230px}
.mini.on{background:#111;color:#fff;border-color:#111}
#wpchars span{user-select:none}
/* ---------- thẻ đề thi thử ---------- */
.excards{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:12px;margin:14px 0}
.excard{border:1px solid #ccc;border-radius:10px;padding:14px 15px;display:flex;flex-direction:column;gap:5px}
.excard .exn{font-size:.72rem;color:#777;text-transform:uppercase;letter-spacing:.08em}
.excard .ext{font-weight:700;font-size:1.05rem}
.excard .exf{font-size:.88rem;color:#444;flex:1}
.excard .exm{font-size:.8rem;color:#777}
.excard button{margin-top:8px;align-self:flex-start}
.exbar{position:sticky;top:44px;z-index:15;background:#fff;border-bottom:1px solid #ccc;
 display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:9px 0;margin-bottom:8px}
.exbar .sp{flex:1}
.exbar #extime{font-size:1.05rem;font-weight:700;font-variant-numeric:tabular-nums}
.prow{display:grid;gap:0;margin:0 0 -1px 0}
.pcell{border:1px solid #999;aspect-ratio:1;display:flex;align-items:center;justify-content:center;
 margin:0 -1px -1px 0;background:
 linear-gradient(#eaeaea,#eaeaea) center/100% 1px no-repeat,
 linear-gradient(#eaeaea,#eaeaea) center/1px 100% no-repeat}
.pcell .zh{font-size:2rem;line-height:1}
#wpprintarea .ph{font-size:1.05rem;font-weight:700;margin:14px 0 8px}
#wpprintarea .ph2{font-size:.85rem;color:#666;margin-top:14px}
@media print{
 .nav,.tools,.qbar,.voicebar,button{display:none}
 .sec{display:block!important}
 body.pmode .wrap{display:none!important}
 body.pmode #wov{position:static;display:block!important;background:#fff;padding:0;overflow:visible}
 body.pmode .wmd{border:0;padding:0;max-width:none}
 body.pmode .wmd>*{display:none!important}
 body.pmode #wpsheetwrap{display:block!important}
 body.pmode #wpsheetwrap>*{display:none!important}
 body.pmode #wpsheet{display:block!important}
 body.pmode .pcell{border-color:#666}
}
/* ---------- giao diện editorial nâu & trắng ---------- */
:root{
 --paper:#faf7f1;--surface:#fffdf9;--canvas:#ddd4c8;--ink:#211915;--ink-soft:#5f534c;--muted:#7a6e65;
 --espresso:#251711;--brown:#684433;--bronze:#9c7659;--cream:#eee7de;
 --line:rgba(58,37,27,.20);--line-strong:rgba(58,37,27,.38);--nav-ink:#e4dad1;
 --sage:#e3e9df;--sage-ink:#3e5842;--rose:#f0e0dc;--rose-ink:#7c3931;
 --font-ui:Aptos,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
 --font-display:Baskerville,"Baskerville Old Face","Palatino Linotype","Book Antiqua",Georgia,"Times New Roman",serif;
 --font-level:"Times New Roman","Liberation Serif",serif;
 --font-han:"Songti SC",STSong,"Noto Serif CJK SC","Source Han Serif SC",SimSun,"Microsoft YaHei",serif;
}
html{background:var(--canvas);scroll-behavior:smooth;color-scheme:light}
body{background:var(--canvas);color:var(--ink);font-family:var(--font-ui);font-kerning:normal;text-rendering:optimizeLegibility}
body::before{content:"";position:fixed;inset:0 0 auto;height:5px;background:var(--espresso);z-index:100;pointer-events:none}
::selection{background:#d9c6b5;color:var(--espresso)}
.wrap{max-width:1120px;min-height:100vh;margin:0 auto;padding:0 54px 120px;background:var(--paper);border-inline:1px solid rgba(63,40,29,.12);box-shadow:0 22px 70px rgba(41,27,20,.12)}
.masthead{padding:46px 0 32px}
.eyebrow{display:flex;justify-content:space-between;gap:18px;margin-bottom:22px;color:var(--brown);font-family:var(--font-display);font-size:.73rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase}
h1,h2,h3{font-family:var(--font-display);color:var(--espresso);font-variant-numeric:lining-nums proportional-nums}
h1{font-size:clamp(3.25rem,7vw,5.25rem);line-height:.92;margin:0 0 20px;font-weight:400;letter-spacing:-.04em}
h2{display:flex;align-items:center;gap:18px;font-size:clamp(1.65rem,3vw,2.2rem);line-height:1.2;margin:34px 0 11px;font-weight:400;letter-spacing:-.018em}
h2::after{content:"";height:1px;flex:1;background:var(--line)}
h3{font-size:1.12rem;line-height:1.35;margin:24px 0 8px;font-weight:700;letter-spacing:.003em}
.exam-level{font-family:var(--font-level);font-variant-numeric:lining-nums proportional-nums;font-feature-settings:"lnum" 1,"kern" 1;white-space:nowrap}
.masthead>.sub{max-width:820px;color:var(--muted);font-size:.98rem;line-height:1.75;margin:0}
.sub{color:var(--muted);font-size:.92rem;line-height:1.68}
a{color:var(--brown);text-underline-offset:3px}
hr{border-color:var(--line);margin:24px 0}
.hz,.zh{font-family:var(--font-han)}
.nav{position:sticky;top:0;z-index:30;margin:0 -54px 30px;padding:0 42px;display:flex;gap:2px;flex-wrap:nowrap;align-items:stretch;overflow-x:auto;background:var(--espresso);border:0;box-shadow:0 7px 20px rgba(43,27,20,.13);scrollbar-width:none}
.nav::-webkit-scrollbar{display:none}
.nav button{flex:0 0 auto;padding:15px 11px 13px;border:0;border-bottom:2px solid transparent;border-radius:0;background:transparent;color:var(--nav-ink);font-size:.76rem;font-weight:650;letter-spacing:.035em;white-space:nowrap}
.nav button:hover{background:rgba(255,255,255,.055);color:var(--surface)}
.nav button.on{border-color:#c7a88e;background:rgba(255,255,255,.08);color:var(--surface)}
button{transition:background-color .16s ease,border-color .16s ease,color .16s ease,transform .16s ease}
button:active:not(:disabled){transform:translateY(1px)}
button:focus-visible,input:focus-visible,select:focus-visible,label.opt:focus-within{outline:2px solid var(--bronze);outline-offset:2px}
.btn{padding:8px 15px;border:1px solid var(--espresso);border-radius:3px;background:var(--espresso);color:var(--surface);font-size:.78rem;font-weight:700;letter-spacing:.055em}
.btn:hover{background:#432b20;border-color:#432b20}
.btn.ghost{background:transparent;color:var(--espresso)}
.btn.ghost:hover{background:var(--cream)}
.mini{padding:5px 9px;border:1px solid var(--line-strong);border-radius:3px;background:var(--surface);color:#4d382e;font-size:.76rem}
.mini:hover{background:var(--cream);border-color:var(--brown)}
.mini.on{background:var(--espresso);border-color:var(--espresso);color:var(--surface)}
.mini:disabled{opacity:.34;cursor:not-allowed;transform:none}
.icon-btn,.mini.icon-btn{display:inline-grid;place-items:center;width:34px;min-width:34px;height:34px;padding:0;border-radius:50%;font-size:1rem;line-height:1}
.tool-cluster{display:inline-flex;align-items:center;gap:6px;padding-right:10px;border-right:1px solid var(--line)}
.tool-cluster:last-child,.tool-cluster.tool-actions{padding-right:0;border-right:0}
.wtools{padding:10px 12px;border:1px solid var(--line-strong);border-radius:4px;background:rgba(238,231,222,.78);box-shadow:0 8px 22px rgba(37,23,17,.06)}
.wp-settings{padding:9px 10px;border-bottom:1px solid var(--line);background:#f8f3ec}
.color-dot{width:30px;min-width:30px;padding:0;font-size:1rem}.color-dot[data-pc="#1a56a8"]{color:#1a56a8}.color-dot[data-pc="#721f24"]{color:#a7463b}
.color-dot.on{box-shadow:inset 0 0 0 2px var(--surface),0 0 0 1px var(--espresso)}
#wtop{position:sticky;top:0;z-index:8;padding:8px 0 10px;background:rgba(250,247,241,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.wmd .wh{position:static;padding:3px 0 9px;margin:0;border:0;background:transparent}
#wpstage{overflow:hidden;padding:0 0 12px}.wp-settings+#wpcv{margin-top:12px}
@media(max-width:760px){.tool-cluster{padding-right:0;border-right:0}.wtools{align-items:flex-start}.pen-control{flex:1 1 100%}.ink-control{order:3}.tool-actions{margin-left:auto}.wp-settings .tool-cluster{flex-wrap:wrap}}
.box,.pass,.cmp,.bank,.res,.excard,#wpstage,.wp-ref{border-color:var(--line-strong);border-radius:4px;background:rgba(255,253,249,.74)}
.box{padding:17px 19px;margin:15px 0}
.box.dark{border-color:var(--espresso);box-shadow:inset 3px 0 0 var(--brown)}
.note,.warn,.good,.ahelp{border-left-width:2px;padding:11px 14px;margin:12px 0;background:var(--cream);color:#49382f}
.note,.ahelp{border-color:var(--bronze)}
.warn{background:var(--rose);border-color:#a05b50;color:var(--rose-ink)}
.good{background:var(--sage);border-color:#6c866d;color:var(--sage-ink)}
.tag,.gh,.excard .exn{color:var(--brown);font-weight:700;letter-spacing:.12em}
.gh{margin:28px 0 6px;padding-bottom:7px;border-color:var(--line-strong)}
table{border-top:1px solid var(--espresso);border-bottom:1px solid var(--espresso);font-size:.89rem}
th,td{border:0;border-bottom:1px solid var(--line);padding:9px 11px}
th{background:var(--cream);color:var(--espresso);font-family:var(--font-display)}
.tools{gap:7px;margin:13px 0 8px;padding:11px 12px;border:1px solid var(--line);background:rgba(242,236,227,.7)}
.tools input[type=text],.tools select,.txin input,.voicebar select{min-height:34px;border:1px solid var(--line-strong);border-radius:3px;background:var(--surface);color:var(--ink)}
.tools input[type=text]:focus{outline:2px solid var(--bronze);border-color:var(--brown)}
.cnt{color:var(--muted)}
.pwr::-webkit-slider-runnable-track{background:#cdbfb2}
.pwr::-moz-range-track{background:#cdbfb2}
.pwr::-webkit-slider-thumb,.pwr::-moz-range-thumb{background:var(--espresso)}
.pwdot{background:var(--espresso)}
.vw{padding:9px 10px;border-radius:2px;border-color:rgba(63,40,29,.10)}
.vw:hover{background:var(--cream)}
.vw .no{color:#a39488}
.vw .vt{color:var(--espresso);font-family:var(--font-han);font-size:1.38rem}
.vw .vt b{border-color:var(--bronze)}
.vw .py{color:var(--brown)}
.vw .pos{color:#9a887c}
.vw.star{background:#efe3d0;box-shadow:inset 3px 0 0 #b48b60}
.vd{padding-top:10px;background:rgba(242,236,227,.45);border-color:var(--line)}
.gp{border-color:var(--line);padding:17px 0}
.gp .gt{color:var(--espresso);font-family:var(--font-display);font-size:1.04rem}
.gp .gs{border-color:var(--line);border-radius:3px;background:var(--cream);color:#4a3025}
.eg .vi,.gp .gd{color:#5f544d}
.cmp{overflow:hidden}
.cmp .cc{border-color:var(--line);padding:17px}
.cmp .cx{color:var(--espresso);font-family:var(--font-han)}
.cmp .cp{color:var(--brown)}
.tip{background:var(--cream);border-color:var(--line);padding:10px 15px}
.q{margin-bottom:27px}
.qn{color:var(--brown);font-family:var(--font-display)}
label.opt{padding:8px 11px;border-radius:3px}
label.opt:hover{background:var(--cream)}
label.opt .L{border-color:#927a6a;color:var(--brown);font-family:var(--font-level);font-variant-numeric:lining-nums}
label.opt.sel{background:#eee4d9;border-color:#b59b87}
label.opt.sel .L{background:var(--espresso);border-color:var(--espresso)}
label.opt.right{background:var(--sage);border-color:#96aa94}
label.opt.right .L{background:#4f6a50;border-color:#4f6a50}
label.opt.wrong{background:var(--rose);border-color:#c99890}
label.opt.wrong .L{background:#8e4339;border-color:#8e4339}
.txin input.right{border-color:#6c866d;background:var(--sage)}
.txin input.wrong{border-color:#a05b50;background:var(--rose)}
.mark.ok{color:#446146}.mark.no{color:#873c33}
.exp{color:#5b4b42}
.qbar,.voicebar{border-color:var(--line-strong)}
.pass{padding:17px 18px}
.pass .vi{color:var(--muted);border-color:var(--line)}
.tx-h .zh{color:var(--espresso);font-family:var(--font-han)}
.tx-h .n,.tx-h .len{color:#9a887c}
.tx-body{color:#2b211c}
.tx-k{border-color:var(--line)}
.bank{padding:11px 13px}
.bank span{border-color:var(--line);border-radius:2px;background:var(--cream)}
.res{border-color:var(--espresso);box-shadow:inset 4px 0 0 var(--brown)}
.res .sc{color:var(--espresso);font-family:var(--font-level);font-variant-numeric:lining-nums;font-weight:400}
.scr,.sp-item .mo{border-radius:3px;background:var(--cream)}
.voicebar{padding:11px 0;color:var(--muted)}
.sp-item{border-color:var(--line);padding:17px 0}
.ov{background:rgba(27,17,12,.72);backdrop-filter:blur(4px)}
.md{border-color:var(--espresso);border-radius:5px;background:var(--paper);box-shadow:0 28px 70px rgba(20,12,8,.28)}
.md .mt,.fc .fh{color:var(--espresso);font-family:var(--font-han)}
.ch{border-color:var(--line);border-radius:3px;background:#fffdf9}
.ch .cnv{background:linear-gradient(#e2d8ce,#e2d8ce) center/100% 1px no-repeat,linear-gradient(#e2d8ce,#e2d8ce) center/1px 100% no-repeat}
.fc .fp,.md .mp{color:var(--brown)}
.exbar{border-color:var(--espresso);border-radius:3px;background:var(--cream)}
.exbar .clock,.exbar #extime{color:var(--espresso);font-family:var(--font-level);font-variant-numeric:lining-nums tabular-nums}
#wov,.wmd{background:var(--paper)}
#wtop,.wmd .wh{background:var(--paper);border-color:var(--line)}
.wmd .wh .wt,.wp-top #wpbig{color:var(--espresso);font-family:var(--font-han)}
.excards{gap:14px}
.excard{padding:18px}
.excard .ext{color:var(--espresso);font-family:var(--font-display);font-size:1.1rem}
.excard .exf{color:#5b4b42}
.text-muted{color:var(--muted)!important}.text-soft{color:var(--ink-soft)!important}
.text-positive{color:var(--sage-ink)!important}.text-negative,.vwarn{color:var(--rose-ink)!important}
.hz-link{cursor:pointer;border-bottom:1px dotted var(--bronze)}.hz-xl{font-size:1.5rem}
.qbar-end{border-top-color:var(--line)!important}.write-info{font-size:.85rem;color:var(--muted);margin-top:6px}
.print-fade{color:#c8bbb0}.print-hidden{color:transparent}.wp-char{cursor:pointer;font-size:1.35rem;padding:5px 13px}
[style*="color:#666"],[style*="color:#777"]{color:var(--muted)!important}
[style*="color:#555"],[style*="color:#444"],[style*="color:#333"]{color:var(--ink-soft)!important}
[style*="color:#1a7f37"]{color:var(--sage-ink)!important}
[style*="color:#721f24"]{color:var(--rose-ink)!important}
[style*="border-bottom:1px dotted #aaa"]{border-bottom-color:var(--bronze)!important}
[style*="border-top:1px solid #eee"]{border-top-color:var(--line)!important}
.voicebar select{padding:6px 8px}
.guide-list{list-style:none;padding:0;margin:15px 0 22px;border-top:1px solid var(--line-strong)}
.guide-list li{position:relative;margin:0;padding:11px 8px 11px 20px;border-bottom:1px solid var(--line);line-height:1.65}
.guide-list li::before{content:"";position:absolute;left:3px;top:1.15rem;width:5px;height:5px;background:var(--bronze);transform:rotate(45deg)}
#s-ov>table{margin:14px 0 16px}#s-ov>p.sub{max-width:860px}
input::placeholder{color:#9a8d83;opacity:1}
.masthead{position:relative;margin:0 -54px;padding:0;overflow:hidden;background:var(--espresso)}
.masthead>.eyebrow{position:absolute;z-index:3;top:32px;left:54px;right:54px;margin:0;color:#eadbce;text-shadow:0 1px 12px rgba(20,11,7,.55)}
.masthead-grid{position:relative;display:flex;align-items:flex-end;min-height:clamp(520px,57vw,650px);overflow:hidden}
.masthead-copy{position:relative;z-index:2;width:min(790px,78%);min-width:0;padding:96px 54px 54px;color:#f8f1e8}
.masthead-copy h1{color:#fffaf3;text-shadow:0 3px 28px rgba(16,8,5,.44)}
.masthead-copy .sub{max-width:720px;margin:0;color:#eee2d7;font-size:1rem;line-height:1.75;text-shadow:0 1px 15px rgba(16,8,5,.72)}
.hero-art{position:absolute;inset:0;margin:0;overflow:hidden;border:0;background:var(--espresso);box-shadow:none}
.hero-art img{display:block;width:100%;height:100%;object-fit:cover;object-position:center;filter:saturate(.86) contrast(1.02)}
.hero-art::before{content:"";position:absolute;z-index:1;inset:0;background:linear-gradient(90deg,rgba(28,16,11,.94) 0%,rgba(35,20,14,.78) 38%,rgba(35,20,14,.22) 70%,rgba(35,20,14,.08) 100%),linear-gradient(0deg,rgba(22,12,8,.72) 0%,transparent 58%);pointer-events:none}
.hero-art::after{content:"";position:absolute;z-index:2;inset:15px;border:1px solid rgba(250,247,241,.38);pointer-events:none}
.doc-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:21px}
.doc-action{display:inline-flex;align-items:center;justify-content:center;min-height:36px;padding:7px 12px;border:1px solid var(--line-strong);border-radius:3px;background:transparent;color:var(--espresso);font:650 .76rem/1 var(--font-ui);letter-spacing:.035em;text-decoration:none;cursor:pointer}
.doc-action:hover{background:var(--cream);border-color:var(--brown)}.doc-action.primary{background:#f7efe5;border-color:#f7efe5;color:var(--espresso);box-shadow:0 8px 24px rgba(17,9,5,.18)}
.guide-layer{position:fixed;inset:0;z-index:200}.guide-scrim{position:fixed;inset:0;z-index:200;background:transparent;cursor:pointer}.guide-scrim.full{background:rgba(27,17,12,.68);backdrop-filter:blur(1.5px)}
.guide-spot{position:fixed;z-index:201;border:2px solid #d9b894;background:rgba(255,253,249,.04);box-shadow:0 0 0 5000px rgba(27,17,12,.68),0 0 0 5px rgba(217,184,148,.16),0 12px 32px rgba(0,0,0,.22);pointer-events:none;transition:top .34s cubic-bezier(.22,.8,.24,1),left .34s cubic-bezier(.22,.8,.24,1),width .34s cubic-bezier(.22,.8,.24,1),height .34s cubic-bezier(.22,.8,.24,1)}
.guide-card{position:fixed;z-index:202;width:350px;max-width:calc(100vw - 24px);padding:17px 18px 15px;border:1px solid var(--line-strong);border-radius:5px;background:var(--paper);box-shadow:0 30px 80px rgba(20,12,8,.34)}
.guide-card.guide-pop{animation:guideCardIn .36s cubic-bezier(.2,.85,.24,1)}.guide-spot.guide-pulse{animation:guidePulse .72s ease-out}
@keyframes guideCardIn{from{opacity:0;transform:translateY(12px) scale(.985)}to{opacity:1;transform:translateY(0) scale(1)}}
@keyframes guidePulse{0%{outline:0 solid rgba(217,184,148,.48)}100%{outline:18px solid rgba(217,184,148,0)}}
.guide-card.center{top:50%;left:50%;transform:translate(-50%,-50%)}.guide-close{position:absolute;top:9px;right:9px;width:27px;height:27px;border:1px solid var(--line);border-radius:50%;background:var(--surface);color:var(--brown);cursor:pointer}
.guide-k{margin-bottom:6px;color:var(--brown);font-size:.68rem;font-weight:800;letter-spacing:.13em;text-transform:uppercase}.guide-title{display:block;padding-right:26px;color:var(--espresso);font:700 1.18rem/1.3 var(--font-display)}
.guide-body{margin:8px 0 9px;color:var(--ink-soft);font-size:.86rem;line-height:1.65}.guide-hint{margin:0 0 15px;color:var(--muted);font-size:.7rem;font-style:italic}.guide-foot{display:flex;align-items:center;justify-content:space-between;gap:12px}.guide-dots{width:96px;height:3px;overflow:hidden;background:#d5c9bf}.guide-dots i{display:block;height:100%;background:var(--brown);transition:width .2s ease}
.guide-buttons{display:flex;gap:6px}.guide-buttons button{min-height:32px;padding:6px 10px;border:1px solid var(--line-strong);border-radius:3px;background:var(--surface);color:var(--espresso);font:650 .74rem var(--font-ui);cursor:pointer}.guide-buttons button.next{background:var(--espresso);border-color:var(--espresso);color:var(--surface)}
.cmp .cw,.exp,.fc .fe,.excard .exf,.wmd .wh .wv{color:var(--ink-soft)}
.eg .pyl,.ch .ci,.excard .exm,#wpprintarea .ph2{color:var(--muted)}
.fail{color:var(--rose-ink)}.tip b{color:var(--espresso)}
#wpstage:fullscreen{background:var(--paper)}
.pcell{border-color:#a99789;background:linear-gradient(#e4dad0,#e4dad0) center/100% 1px no-repeat,linear-gradient(#e4dad0,#e4dad0) center/1px 100% no-repeat}
@media(max-width:720px){
 body{background:var(--paper)}
 body::before{height:4px}
 .wrap{padding:0 18px 84px;border:0;box-shadow:none}
 .masthead{margin:0 -18px;padding:0}
 .masthead>.eyebrow{top:24px;left:18px;right:18px;font-size:.61rem;letter-spacing:.1em}
 .masthead-grid{min-height:560px}.masthead-copy{width:100%;padding:90px 18px 34px}
 .hero-art{aspect-ratio:auto}.hero-art::before{background:linear-gradient(0deg,rgba(25,14,9,.96) 0%,rgba(30,17,11,.72) 58%,rgba(30,17,11,.2) 100%)}.hero-art::after{inset:9px}
 .eyebrow{margin-bottom:16px;font-size:.65rem;letter-spacing:.12em}
 h1{font-size:3.7rem;margin-bottom:17px}
 h2{font-size:1.62rem;margin-top:28px;gap:12px}
 .masthead>.sub{font-size:.91rem;line-height:1.65}
 .nav{margin:0 -18px 24px;padding:0 8px}
 .nav button{padding:13px 10px 11px;font-size:.73rem}
 .box,.pass{padding:14px}
 .opts,.txin,.au,.scr{margin-left:0}
 .tools{padding:10px}
 .tools input[type=text]{flex:1 1 100%;width:100%}
 .voicebar select{max-width:100%}
 table{display:block;max-width:100%;overflow-x:auto;font-size:.82rem;-webkit-overflow-scrolling:touch}
 th,td{padding:8px;min-width:74px}
 .cmp .cc{padding:14px}
}
@media(max-width:460px){
 .eyebrow span:last-child{display:none}
 h1{font-size:3.15rem}
 .vw{grid-template-columns:28px minmax(72px,auto) 1fr}
 .vw .mn{grid-column:2/4}
 .mini{padding:6px 8px}
 .guide-card{width:calc(100vw - 20px)}.guide-dots{display:none}
}

/* ---------- tinh chỉnh nhịp hàng, màu trạng thái và tương tác ---------- */
.masthead-copy .sub,.sub,.note,.warn,.good,.ahelp,.gp .gd,.eg .vi,.tip,.excard .exf,.pass .vi,.sp-item .pr{text-align:justify;text-justify:inter-word}
.nav{overscroll-behavior-inline:contain;-webkit-overflow-scrolling:touch;scroll-snap-type:x proximity;touch-action:pan-x;cursor:grab}
.nav:active{cursor:grabbing}.nav button{scroll-snap-align:start}
button[data-say]{border-color:#b99a82;background:#f7efe5;color:var(--espresso)}
button[data-say]:hover{border-color:var(--brown);background:#eadfd3}
.audio-icon{display:inline-grid!important;place-items:center;width:29px!important;min-width:29px!important;height:29px!important;padding:0!important;border-radius:50%!important;font:700 .82rem/1 var(--font-display)!important}
.vw .vt{display:flex;align-items:center;gap:7px;min-width:0}.vw .vocab-audio{flex:none}
.note,.warn,.good,.ahelp{border:1px solid var(--line-strong);border-left-width:4px;border-radius:3px;box-shadow:0 7px 18px rgba(37,23,17,.055)}
.note,.ahelp{border-left-color:var(--bronze);background:#eee4d8;color:#49382f}
.warn{border-color:#765243;border-left-color:#c6a17f;background:#342019;color:#fff9f1}
.warn b,.warn .zh{color:#fffdf8}.warn::selection{background:#d3b496;color:#251711}
.good{border-color:#8f8979;border-left-color:#6b7864;background:#ece8df;color:#354033}
label.opt.right{border-color:#7b8873;background:#ecefe8;box-shadow:inset 3px 0 0 #66735f}
label.opt.wrong{border-color:#a27870;background:#f0e7e2;box-shadow:inset 3px 0 0 #8a554c}
.txin input.right{border-color:#71806a;background:#edf0e9}.txin input.wrong{border-color:#986b63;background:#f1e8e4}
.cmp{position:relative;align-items:stretch;padding-top:39px}
.cmp-no{position:absolute;top:10px;left:13px;display:inline-grid;place-items:center;min-width:32px;height:22px;padding:0 7px;border:1px solid #9f7c63;border-radius:999px;background:var(--espresso);color:#fffaf3;font:750 .65rem/1 var(--font-level);letter-spacing:.08em}
.cmp .cc{display:flex;min-height:176px;flex-direction:column;align-items:flex-start}.cmp .cw{margin-top:auto;padding-top:9px}
.wtools,.wp-settings{align-items:center;row-gap:8px}.wtools .mini,.wp-settings .mini{min-height:34px}
#wpstage{overflow:auto}.wgrid #wpstage{min-width:0}
#wov:fullscreen,#wov.writer-focus{display:block!important;overflow:auto;background:var(--paper)}
#wov:fullscreen .wmd,#wov.writer-focus .wmd{min-height:100%;padding-inline:18px}
#wov:fullscreen .wgrid,#wov.writer-focus .wgrid{display:block}
#wov:fullscreen .wp-ref,#wov.writer-focus .wp-ref{width:100%;margin-top:18px}
#wov.writer-focus{z-index:300}
@media(max-width:720px){
 .nav{padding-bottom:3px;scrollbar-width:thin;scrollbar-color:#b79275 transparent}
 .nav::-webkit-scrollbar{display:block;height:3px}.nav::-webkit-scrollbar-thumb{background:#b79275;border-radius:99px}
 .cmp{padding-top:38px}.cmp .cc{min-height:158px}
}

/* ---------- nhãn phiên bản, loại từ đầy đủ và thanh mục tinh gọn ---------- */
.exam-badge{display:inline-flex;align-items:center;gap:5px;margin:0 0 13px;padding:3px 6px;border:1px solid rgba(255,248,238,.36);background:rgba(255,255,255,.045);color:#fff8ee;font-size:.55rem;line-height:1.2;letter-spacing:.035em}
.exam-badge span{padding:2px 4px;background:#c5a17f;color:#2d1b15;font-size:.54rem;font-weight:850;text-transform:uppercase;letter-spacing:.07em}.exam-badge b{font-weight:650}
.vw{grid-template-columns:36px minmax(86px,auto) 116px minmax(92px,118px) minmax(190px,1fr);align-items:center}
.vw .pos{text-transform:none;letter-spacing:.01em;line-height:1.35}
.vw .mn{display:flex;align-items:center;justify-content:space-between;gap:10px;min-width:0;text-align:justify;text-justify:inter-word}
.vw .mn .meaning-text{min-width:0}.vw .mn .vocab-audio{flex:none}
.hidemean .mn{visibility:visible}.hidemean .mn .meaning-text{visibility:hidden}
.nav{padding-bottom:4px;scrollbar-width:thin;scrollbar-color:#a98266 transparent}
.nav::-webkit-scrollbar{display:block!important;height:2px}.nav::-webkit-scrollbar-track{background:transparent}.nav::-webkit-scrollbar-thumb{border-radius:99px;background:#a98266}
.nav button{position:relative;border-bottom:0!important}.nav button.on{border-color:transparent!important}
.nav button::after{content:"";position:absolute;left:50%;bottom:5px;width:0;height:1px;transform:translateX(-50%);background:#d7b799;transition:width .18s ease}
.nav button:hover::after{width:16px}.nav button.on::after{width:28px;height:2px}
@media(max-width:620px){.vw{grid-template-columns:30px minmax(82px,auto) 1fr}.vw .mn{grid-column:2/4}.exam-badge{flex-wrap:wrap}}


/* Khối luyện nét đồng bộ nâu thẫm, không tràn nút ở mọi kích thước. */
.note,.tip{background:var(--espresso)!important;color:#fffaf3!important;border-color:var(--bronze)!important;border-left:4px solid var(--bronze)!important;text-align:justify;text-justify:inter-word}
.note b,.tip b{color:#f1d4a8!important}
.wgrid .wp-ref{width:300px;display:grid;grid-template-columns:minmax(0,1fr);gap:12px;background:var(--espresso);color:#fffaf3;border-color:#8e6b57}
.wgrid .wp-ref .cnv{margin:auto}.wp-ref>div:last-child{min-width:0!important;width:100%}.wp-ref #wpinfo,.wp-ref .sub{color:#f4e9df!important}.wp-ref .wp-top{display:grid!important;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px!important;width:100%}.wp-ref .wp-top .mini{width:100%;min-width:0;white-space:nowrap;padding-inline:6px}
@media(max-width:860px){.wgrid .wp-ref{width:100%;grid-template-columns:190px minmax(0,1fr)}.wp-ref .wp-top{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:620px){.wgrid .wp-ref{grid-template-columns:1fr}.wp-ref .wp-top{grid-template-columns:repeat(2,minmax(0,1fr))}}


/* Khối luyện nét đồng bộ nâu thẫm, không tràn nút ở mọi kích thước. */
.note,.tip{background:var(--espresso)!important;color:#fffaf3!important;border-color:var(--bronze)!important;border-left:4px solid var(--bronze)!important;text-align:justify;text-justify:inter-word}
.note b,.tip b{color:#f1d4a8!important}
.wgrid .wp-ref{width:300px;display:grid;grid-template-columns:minmax(0,1fr);gap:12px;background:var(--espresso);color:#fffaf3;border-color:#8e6b57}
.wgrid .wp-ref .cnv{margin:auto}.wp-ref>div:last-child{min-width:0!important;width:100%}.wp-ref #wpinfo,.wp-ref .sub{color:#f4e9df!important}.wp-ref .wp-top{display:grid!important;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px!important;width:100%}.wp-ref .wp-top .mini{width:100%;min-width:0;white-space:nowrap;padding-inline:6px}
@media(max-width:860px){.wgrid .wp-ref{width:100%;grid-template-columns:190px minmax(0,1fr)}.wp-ref .wp-top{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:620px){.wgrid .wp-ref{grid-template-columns:1fr}.wp-ref .wp-top{grid-template-columns:repeat(2,minmax(0,1fr))}}
.portal-tools{position:fixed;top:14px;right:14px;z-index:500;display:flex;align-items:center;gap:7px;padding:6px;border:1px solid rgba(255,250,243,.38);background:rgba(37,23,17,.88);box-shadow:0 8px 24px rgba(25,14,10,.18);backdrop-filter:blur(12px)}.portal-tools a{display:grid;place-items:center;width:34px;height:34px;border:1px solid rgba(255,255,255,.28);color:#fffaf3;text-decoration:none}.portal-tools label{display:flex;align-items:center;gap:6px;color:#fffaf3;font-size:.72rem}.portal-tools select{border:0;background:transparent;color:#fffaf3;outline:0}.portal-tools option{background:#fffdf9;color:#251711}@media(max-width:620px){.portal-tools{top:9px;right:9px}}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}button{transition:none}.guide-card,.guide-spot{animation:none!important;transition:none!important}}
@media print{
 body,.wrap{background:#fff;box-shadow:none;border:0}
 body::before,.masthead,.nav{display:none!important}
}
















/* ZHONGWEN_FULL_BLEED_PATCH */
/* Trang phủ kín cửa sổ; nội dung dài vẫn giữ độ rộng đọc thoải mái. */
html,body{width:100%;min-height:100%;background:var(--paper)}
.wrap{width:100%!important;max-width:none!important;margin:0!important;border:0!important;box-shadow:none!important}
.sec{width:min(1180px,100%);margin-inline:auto}

/* Một hệ font duy nhất cho cả sáu cấp, có fallback đủ dấu Việt, chữ Hán và Devanagari. */
:root{
  --font-ui:"Aptos","Segoe UI Variable","Segoe UI","Noto Sans","Noto Sans Devanagari","Nirmala UI",Roboto,Arial,sans-serif;
  --font-display:"Palatino Linotype",Palatino,"Noto Serif","Noto Serif Devanagari","Nirmala UI",Georgia,"Times New Roman",serif;
  --font-level:"Times New Roman","Liberation Serif","Noto Serif",serif;
  --font-han:"Songti SC",STSong,"Noto Serif SC","Noto Serif CJK SC","Source Han Serif SC",SimSun,"Microsoft YaHei",serif
}
html{font-synthesis:none;text-rendering:optimizeLegibility}
body,button,input,select,textarea{font-family:var(--font-ui);font-synthesis:none}
h1,h2,h3,h4,.gp .gt,.excard .ext{font-family:var(--font-display)}
.hz,.zh,.cw,.ct,.vt,.tx-body,.wmd .wh .wt,.wp-top #wpbig{font-family:var(--font-han)!important}
.exam-level,.cmp-no,.qn,.res .sc,.exbar .clock,.exbar #extime{font-family:var(--font-level)}
html[lang="hi"] body,html[lang="hi"] button,html[lang="hi"] input,html[lang="hi"] select,html[lang="hi"] textarea{font-family:"Noto Sans Devanagari","Nirmala UI",var(--font-ui)}
html[lang="hi"] h1,html[lang="hi"] h2,html[lang="hi"] h3,html[lang="hi"] h4{font-family:"Noto Serif Devanagari","Nirmala UI",var(--font-display)}

/* Scrollbar của thanh mục mảnh và cùng màu với nét gạch chân đang chọn. */
.nav{padding-bottom:3px;scrollbar-width:thin!important;scrollbar-color:#d7b799 transparent!important}
.nav::-webkit-scrollbar{display:block!important;width:1px!important;height:1px!important}
.nav::-webkit-scrollbar-track{background:transparent!important}
.nav::-webkit-scrollbar-thumb{border:0!important;border-radius:0!important;background:#d7b799!important}

/* Chỉ mục A–B–C trong Phân biệt: nhanh, gọn và không biến thành một dãy thẻ generic. */
.cf-index{position:sticky;top:46px;z-index:26;display:flex;margin:16px 0 30px;overflow-x:auto;border-block:1px solid var(--line-strong);background:rgba(250,247,241,.97);backdrop-filter:blur(12px);scrollbar-width:none}
.cf-index::-webkit-scrollbar{display:none}
.cf-index button{position:relative;display:grid;grid-template-columns:34px minmax(0,1fr);align-items:center;gap:9px;flex:1 0 0;min-width:0;min-height:52px;padding:8px 14px;border:0;border-right:1px solid var(--line);border-radius:0;background:transparent;color:var(--espresso);text-align:left;cursor:pointer}
.cf-index button:last-child{border-right:0}.cf-index button:hover{background:var(--cream)}
.cf-index button::after{content:"";position:absolute;right:14px;bottom:-1px;left:14px;height:2px;transform:scaleX(0);transform-origin:left;background:var(--brown);transition:transform .2s ease}
.cf-index button.on{background:#f2e9df}.cf-index button.on::after{transform:scaleX(1)}
.cf-index b{font:400 1.35rem/1 var(--font-level);font-variant-numeric:lining-nums;color:var(--brown)}
.cf-index span{font-size:.72rem;font-weight:750;line-height:1.25;letter-spacing:.035em}
.cf-anchor{scroll-margin-top:112px}.cf-subhead{margin-top:22px;padding-top:4px;color:var(--brown);font-size:.92rem;letter-spacing:.03em}

/* Nút về Thư phòng và bộ chọn ngôn ngữ luôn nằm trên ảnh, tách hai phía để không che nhau. */
.portal-tools{top:max(14px,env(safe-area-inset-top))!important;right:14px!important;left:14px!important;z-index:900!important;justify-content:space-between!important;padding:0!important;border:0!important;background:transparent!important;box-shadow:none!important;backdrop-filter:none!important;pointer-events:none;transition:opacity .18s ease,visibility .18s ease}
.portal-tools>a,.portal-tools>label{pointer-events:auto;background:rgba(37,23,17,.94)!important;border:1px solid rgba(255,250,243,.48)!important;box-shadow:0 8px 24px rgba(25,14,10,.24);backdrop-filter:blur(12px)}
.portal-tools>a{width:40px!important;height:40px!important;font-size:1.1rem}.portal-tools>label{min-height:40px;padding:0 10px}
#hzclose,#wpclose{position:relative;z-index:4;flex:none;background:var(--surface)!important;color:var(--espresso)!important;border-color:var(--line-strong)!important;box-shadow:0 5px 14px rgba(37,23,17,.12)}
body:has(#ov.on) .portal-tools,body:has(#wov.on) .portal-tools,body:has(.guide-layer) .portal-tools{opacity:0!important;visibility:hidden!important;pointer-events:none!important}

/* Ô chạy nét lớn, sáng như giấy tuyên và tách rõ khỏi bảng luyện viết. */
.wgrid .wp-ref{width:380px!important;padding:16px!important;gap:15px!important;background:#f3eadf!important;color:var(--espresso)!important;border:1px solid #b79479!important;box-shadow:0 14px 34px rgba(48,28,19,.10)}
.wgrid .wp-ref .cnv{width:260px!important;height:260px!important}
.wp-ref #wpinfo{color:var(--espresso)!important;font-size:.9rem!important}.wp-ref .sub{color:#5f5148!important}
.wp-ref .wp-top .mini{background:#fffaf3!important;color:var(--espresso)!important;border-color:#b89a83!important}.wp-ref .wp-top .mini:hover{background:#eadfd3!important}
.md{max-width:760px}.ch .cnv{width:168px!important;height:168px!important}.ch{background:#fffaf3}

/* Tour nằm trên toàn bộ giao diện và chuyển điểm sáng dịu, không để timer cũ nhảy sai vị trí. */
.guide-layer{z-index:1200!important}.guide-scrim{z-index:1200!important}.guide-spot{z-index:1201!important;background:transparent!important;transition:top .28s cubic-bezier(.22,.8,.24,1),left .28s cubic-bezier(.22,.8,.24,1),width .28s cubic-bezier(.22,.8,.24,1),height .28s cubic-bezier(.22,.8,.24,1),opacity .15s ease!important}.guide-card{z-index:1202!important;transition:top .28s cubic-bezier(.22,.8,.24,1),left .28s cubic-bezier(.22,.8,.24,1),opacity .15s ease}.guide-layer.is-moving .guide-spot{opacity:0}.guide-demo-click{animation:guideDemoClick .58s ease!important}
@keyframes guideDemoClick{0%,100%{box-shadow:0 0 0 0 rgba(156,118,89,0)}45%{box-shadow:0 0 0 8px rgba(156,118,89,.30);transform:translateY(1px)}}

/* Ô chạy nét: nền giấy sáng và nét mực đậm để không bị chìm trên nền nâu. */
.wgrid .wp-ref .cnv{
  overflow:hidden;
  background:
    linear-gradient(rgba(104,68,51,.18),rgba(104,68,51,.18)) center/100% 1px no-repeat,
    linear-gradient(90deg,rgba(104,68,51,.18),rgba(104,68,51,.18)) center/1px 100% no-repeat,
    #fffaf2!important;
  border:1px solid #c8b19d;
  border-radius:3px;
  box-shadow:inset 0 0 0 5px rgba(255,255,255,.5),0 8px 18px rgba(17,9,5,.18)
}
.wgrid .wp-ref .cnv svg{display:block;width:100%;height:100%;filter:contrast(1.18)}
.wp-ref #wpinfo{font-weight:750;letter-spacing:.015em}
/* Ở màn hình hẹp, ô nét và cụm nút xếp dọc, không để chữ hoặc canvas đẩy tràn khung. */
@media(max-width:860px){
  .wgrid .wp-ref{width:100%!important;max-width:100%!important;min-width:0!important;grid-template-columns:1fr!important;box-sizing:border-box;overflow:hidden}
  .wgrid .wp-ref>div{min-width:0!important;max-width:100%}
  .wgrid .wp-ref .cnv{width:min(280px,100%)!important;height:auto!important;aspect-ratio:1;margin-inline:auto!important}
  .wgrid .wp-ref .cnv svg,.wgrid .wp-ref .cnv canvas{display:block;max-width:100%!important;max-height:100%!important}
  .wp-ref .wp-top{grid-template-columns:repeat(2,minmax(0,1fr))!important}
  .wp-ref .wp-top .mini{min-height:42px;white-space:normal!important;overflow-wrap:anywhere;line-height:1.15!important}
  .wp-ref #wpinfo,.wp-ref .sub{max-width:100%;overflow-wrap:anywhere}
}
@media(max-width:720px){
  .sec{width:100%}
  .nav::-webkit-scrollbar{height:2px!important}
  .cf-index{top:43px;margin-inline:-18px;padding-inline:8px}
  .cf-index button{flex:0 0 148px;padding-inline:10px}
  .portal-tools{top:max(9px,env(safe-area-inset-top))!important;right:9px!important;left:9px!important}
  .wgrid .wp-ref{width:100%!important;grid-template-columns:1fr!important;align-items:start}
}
@media(max-width:620px){
  .wgrid .wp-ref{grid-template-columns:1fr!important;padding:13px!important}
  .wgrid .wp-ref .cnv{width:min(260px,100%)!important;height:auto!important;aspect-ratio:1}
  .ch .cnv{width:156px!important;height:156px!important}
}
/* END_ZHONGWEN_FULL_BLEED_PATCH */



#wtop,.wtools,.wp-settings,.wp-ref,.wp-ref>div{min-width:0;max-width:100%}.writer-status{display:block;min-height:1.2em;margin:4px 0;overflow-wrap:anywhere}.writer-status.error{color:#8b3b2d}#wpcv{display:block;max-width:100%;box-sizing:border-box}.wp-ref .wp-top{display:flex;flex-wrap:wrap;gap:6px}.wp-ref .sub,#wpinfo{overflow-wrap:anywhere}.wtools .tool-cluster{min-width:0}.wtools button,.wp-settings button,.wp-ref button{max-width:100%}
@media(max-width:560px){#wmd{width:100%;max-width:100%;padding-inline:10px;overflow-x:hidden}.wh,.wtools,.wp-settings{gap:6px}.wtools .tool-actions{margin-left:0}.wtools .sp{display:none}.wp-ref{grid-template-columns:1fr!important}.wp-ref .cnv{margin-inline:auto;max-width:min(260px,100%)}#wpcv{width:100%!important;height:auto!important}.wp-ref .wp-top button{flex:1 1 auto}.wp-ref .sub{font-size:.84rem!important}}


/* Keep the full-bleed navigation attached to both viewport edges. */
.nav{width:auto!important;max-width:none!important;box-sizing:border-box}
/* Long pinyin and multilingual glosses wrap inside their own columns. */
.vw .py{min-width:0;line-height:1.45;overflow-wrap:anywhere}
.vw .mn,.vw .meaning-text{min-width:0;overflow-wrap:anywhere}


.jueyin-language{display:inline-flex;align-items:center;gap:.45rem;min-height:40px;padding:.35rem .55rem;border:1px solid rgba(215,194,168,.75);background:rgba(37,23,17,.88);color:#fffdfa;font:600 12px/1.2 Aptos,"Segoe UI",Arial,sans-serif;backdrop-filter:blur(8px)}
.jueyin-language select{max-width:9rem;border:0;outline:0;background:transparent;color:inherit;font:inherit;cursor:pointer}.jueyin-language option{background:#fffdfa;color:#251711}
.jueyin-language.floating{position:fixed;z-index:10020;top:18px;right:18px;box-shadow:0 8px 28px rgba(37,23,17,.18)}
@media(max-width:560px){.jueyin-language.floating{top:10px;right:10px}.jueyin-language select{max-width:7.2rem}}


html:lang(hi) body,html:lang(hi) button,html:lang(hi) input,html:lang(hi) select,html:lang(hi) textarea{font-family:"Nirmala UI","Noto Sans Devanagari","Segoe UI",Arial,sans-serif}
html:lang(hi) h1,html:lang(hi) h2,html:lang(hi) h3,html:lang(hi) .guide-title{font-family:"Nirmala UI","Noto Serif Devanagari","Segoe UI",serif;line-height:1.35;letter-spacing:normal}
html:lang(hi) button,html:lang(hi) .btn,html:lang(hi) label{line-height:1.5}
.guide-title,.guide-body,.status,.notice{overflow-wrap:anywhere}
@media(max-width:520px){html:not([lang="vi"]) .bar,html:not([lang="vi"]) .toptools{flex-wrap:wrap}html:not([lang="vi"]) .bar h1{white-space:normal;min-width:0}html:not([lang="vi"]) .bar .spacer{display:none}html:not([lang="vi"]) .bar .lang{margin-left:auto}}


.person>div{min-width:0}.person strong,.person small,#sideName,#sideEmail{overflow-wrap:anywhere}
.guide-card{max-height:calc(100vh - 24px);max-height:calc(100dvh - 24px);overflow:auto}
.wtools .tool-cluster,.wp-settings .tool-cluster{max-width:100%;flex-wrap:wrap}
@media(max-width:520px){.bar{flex-wrap:wrap}.bar h1{white-space:normal;min-width:0;flex:1 1 140px}.bar .spacer{display:none}.bar .lang{margin-left:auto}.wtools .pen-control{min-width:0}.wtools input[type=range]{min-width:0;max-width:100%}}

/* All existing UI is styled exclusively by the unmodified HSK 1 2.0 stylesheet. */
/* Only crop the supplied portrait; do not change the header geometry or treatment. */
.hero-art img{object-position:68% 50%}
.h30-source{margin-top:24px}.h30-source summary{cursor:pointer}.h30-source a{color:var(--brown)}
.h30-character-panel{scroll-margin-top:90px;margin-top:24px}
.h30-character-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(78px,1fr));gap:8px}
.h30-char{position:relative;min-height:90px;padding:22px 10px 10px!important}
.h30-char small{position:absolute;top:5px;left:7px;font-size:.62rem;color:var(--muted)}
.h30-char .zh{font-size:2rem;line-height:1.35}
.h30-character-grid>.sub{grid-column:1/-1}
@media(max-width:620px){.h30-character-grid{grid-template-columns:repeat(auto-fill,minmax(64px,1fr))}}

.sec,.pass,.sp-item,.q,.vw,.vd{min-width:0}.sec p,.sec .sub,.sec td,.sec th{overflow-wrap:break-word}
 .nav{scrollbar-width:thin;scrollbar-color:#765849 transparent}.nav::-webkit-scrollbar{height:2px}.nav::-webkit-scrollbar-thumb{background:#765849}
 .h30-compose [hidden]{display:none!important}.h30-compose .note{overflow-wrap:anywhere}
 @media(max-width:620px){#s-ov table{width:100%;table-layout:fixed}#s-ov th,#s-ov td{padding:9px 6px;font-size:.79rem}#s-ov th:last-child{width:40%}.wp-ref{min-width:0;max-width:100%}.wp-ref .tools{flex-wrap:wrap}.cf-index{max-width:100%;overflow-x:auto}}
 @media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}
/* Only the flashcard dialog changes. Other character dialogs retain their layout. */
#md:has(#fcbox){width:min(680px,calc(100vw - 24px));height:min(640px,calc(100dvh - 24px));max-height:calc(100dvh - 24px);display:flex;flex-direction:column;overflow:hidden;box-sizing:border-box}
#md:has(#fcbox)>.mh,#md:has(#fcbox)>.qbar,#md:has(#fcbox)>.sub{flex:none}
#md:has(#fcbox)>.mh{min-height:40px}
#md:has(#fcbox)>.qbar{min-height:76px;align-content:center;gap:7px;margin:6px 0}
#fcbox{flex:1;min-height:0;display:grid;grid-template-rows:132px 54px minmax(72px,1fr) minmax(76px,1fr);padding:0;overflow:hidden}
#fcbox .fh{font-size:clamp(3rem,8vw,5.25rem);margin:0;display:flex;align-items:center;justify-content:center;overflow:auto;overflow-wrap:anywhere;min-width:0;line-height:1.08}
#fcbox .fp,#fcbox .fm,#fcbox .fe{margin:0;padding:8px 12px;min-height:0;overflow:auto;overflow-wrap:anywhere;scrollbar-gutter:stable;scrollbar-width:thin}
#fcbox .fp{font-size:clamp(1.08rem,2.4vw,1.35rem);font-weight:650;line-height:1.4}#fcbox .fm{font-size:clamp(1.08rem,2.35vw,1.3rem);line-height:1.55}#fcbox .fe{font-size:clamp(1rem,2.1vw,1.18rem);line-height:1.55}
@media(max-width:620px){#fcbox{grid-template-rows:112px 48px minmax(58px,1fr) minmax(62px,1fr)}#fcbox .fh{font-size:clamp(2.7rem,14vw,4.5rem)}#md:has(#fcbox)>.qbar{min-height:84px}#md:has(#fcbox){padding:14px}}
@media(max-height:520px){#md:has(#fcbox){overflow-y:auto}#fcbox{flex:none;min-height:230px;grid-template-rows:68px 42px auto auto;overflow:visible}#fcbox .fh{font-size:2.5rem}#fcbox .fp,#fcbox .fm,#fcbox .fe{overflow:visible}#md:has(#fcbox)>.qbar{min-height:40px;position:sticky;bottom:0;background:var(--paper,#fffaf3);padding-block:8px}#md:has(#fcbox)>.sub{display:none}}

.extra-compose{border-top:1px solid var(--line,#d4c5b7);margin-top:32px;padding-top:24px;min-width:0;max-width:100%}
.extra-compose .tools{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:12px 0;min-width:0;max-width:100%}
.extra-compose select{flex:1 1 220px;min-width:0;max-width:100%;padding:9px;border:1px solid var(--line,#d4c5b7);border-radius:3px;background:var(--paper,#fffaf3);color:var(--espresso,#35251d);font:inherit}
.extra-compose textarea{display:block;width:100%;max-width:100%;box-sizing:border-box;min-height:380px;resize:vertical;padding:20px;font-family:var(--font-han,serif);font-size:1.2rem;line-height:1.9;border:1px solid var(--line,#d4c5b7);border-radius:3px;background:var(--paper,#fffaf3);color:var(--ink,#35251d);overflow-wrap:anywhere}
.extra-compose .note p{overflow-wrap:anywhere}.extra-compose fieldset{border:1px solid var(--line,#d4c5b7);padding:14px;min-width:0}.extra-compose fieldset label{display:block;margin:7px 0;overflow-wrap:anywhere}.extra-compose input[type=checkbox]{margin-right:9px;accent-color:var(--espresso,#35251d)}
.extra-compose .target-pending{color:#8b3b2d}.extra-compose .target-met{color:#315d44}.extra-compose .sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.extra-compose:fullscreen,.extra-compose.extra-full{background:var(--paper,#fffaf3);padding:24px;box-sizing:border-box;overflow:auto;width:100%;max-width:none;height:100dvh}
.extra-compose.extra-full{position:fixed;inset:0;z-index:11000;margin:0}.extra-compose:fullscreen textarea,.extra-compose.extra-full textarea{min-height:45dvh}
@media(max-width:520px){.extra-compose select{flex-basis:100%}.extra-compose textarea{padding:12px;min-height:320px;font-size:1.05rem}.extra-compose:fullscreen,.extra-compose.extra-full{padding:14px}.extra-compose .extra-writing-status .sp{display:none}.extra-compose .extra-writing-status{align-items:flex-start}.extra-compose #extra-download{width:100%}}

.vw:focus-visible{outline:2px solid var(--red,#721f24);outline-offset:-2px}.advanced-compose textarea{width:100%;box-sizing:border-box;min-height:180px;font:1.1rem/1.8 var(--cn,serif);padding:16px;border:1px solid var(--line);background:var(--paper,#fffaf3);color:var(--ink,#251711)}.advanced-compose select{max-width:100%}.advanced-compose label{line-height:1.8}

/* v31: existing vocabulary paging controls, mirrored above and below the list. */
.vocab-pagination[hidden]{display:none!important}
.vocab-pagination{gap:10px;align-items:center;scroll-margin-top:80px}
.vocab-page-jump{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-left:auto;font-size:.85rem;max-width:100%}
.vocab-page-jump label{font-weight:650}
.vocab-page-jump input[type=text]{flex:0 0 68px;min-width:0;width:68px;text-align:center;padding:6px 8px}
.vocab-page-jump input[aria-invalid=true]{border-color:var(--rose-ink)}
.vocab-page-error:empty{display:none}.vocab-page-error{flex-basis:100%;color:var(--rose-ink);font-size:.8125rem}
#s-vo{scroll-margin-top:85px}
@media(max-width:620px){.vocab-page-jump{margin-left:0;flex:1 1 100%}.vocab-pagination .mini{min-height:38px}}