/* Practice uses the available screen, with the task and answer as the visual focus. */
html.hskduel-ui .exercise-specials img.special-symbol{width:64px;height:64px;object-fit:contain;flex:none}
html.hskduel-ui #main>.study .syllables{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;width:100%;min-width:0}
html.hskduel-ui #main>.study .syllable{flex:1 1 160px;min-width:0;max-width:300px;overflow:visible}
html.hskduel-ui #main>.study .syllable input{box-sizing:border-box;display:block;min-width:0;width:100%;max-width:100%;padding:10px 8px;line-height:1.5;text-align:center;font-size:24px}
@media(max-width:720px){
 html.hskduel-ui.mobile-playing #main>.study .study-top{display:grid!important;grid-template-columns:minmax(80px,1fr) auto;min-height:44px;flex:none}
 html.hskduel-ui.mobile-playing #main>.study .study-top #end{display:block!important;visibility:visible;font-size:17px!important;width:auto;min-width:80px;min-height:44px;padding:8px;grid-row:1;grid-column:1}
 html.hskduel-ui.mobile-playing #main>.study .study-top #end::before{content:none}
 html.hskduel-ui.mobile-playing #main>.study .study-top>span:nth-child(2){display:none}
 html.hskduel-ui.mobile-playing #main>.study .study-top>span:last-child{grid-row:1;grid-column:2;font-size:14px}
 html.hskduel-ui.mobile-playing #main>.study .syllables{gap:8px;max-height:42dvh;overflow-y:auto;flex:none;padding:4px 0}
 html.hskduel-ui.mobile-playing #main>.study .syllable{flex:1 1 140px;min-width:0}
 html.hskduel-ui.mobile-playing #main>.study .tones{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:3px}
 html.hskduel-ui.mobile-playing #main>.study .tones button{min-width:0;padding:4px 1px}
}
.hskduel-ui .hsk-wizard .wizard-heading h1{font-size:clamp(28px,3.2vw,46px);text-align:center;line-height:1.2;margin:22px 0 8px}
.hskduel-ui .hsk-wizard .wizard-progress{max-width:600px;margin:0 auto}
.hskduel-ui .hsk-wizard .wizard-pools button{display:grid;place-items:center;text-align:center;padding:28px 24px!important}
.hskduel-ui .hsk-wizard .wizard-pools button>span{width:100%;margin:0;text-align:center;line-height:1.25}
.hskduel-ui .hsk-wizard .start-row,.hskduel-ui .hsk-wizard .duel-setup-navigation{background:transparent;gap:24px}
.hskduel-ui .hsk-wizard .start-row #practice-exercises,.hskduel-ui .hsk-wizard #duel-setup-back,.hskduel-ui .hsk-wizard .start-row #start,.hskduel-ui .hsk-wizard .duel-setup-navigation .primary{min-height:66px;font-size:24px;padding:14px 32px;border-radius:18px}
.hskduel-ui .hsk-wizard .practice-options .mode-label{font-size:clamp(18px,2.1vw,27px)!important;line-height:1.25}
.hskduel-ui .hsk-wizard .practice-options button{height:clamp(82px,13dvh,132px)!important}
.hskduel-ui .hsk-wizard .wizard-order-switch{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:12px;width:min(760px,100%);align-self:center;padding:12px;border:1px solid var(--line);border-radius:32px;background:var(--soft);box-shadow:inset 0 2px 10px #0001,0 12px 36px #0001}
.hskduel-ui .hsk-wizard .wizard-order-switch>button[data-word-order]{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;min-width:0;min-height:clamp(200px,33dvh,300px);padding:24px 12px;border:2px solid transparent;border-radius:24px;background:transparent;color:var(--fg);font-size:clamp(24px,3vw,34px);transition:background .2s,box-shadow .2s,border-color .2s}
.hskduel-ui .hsk-wizard .wizard-order-switch>button[data-word-order][aria-pressed=true]{background:var(--bg);border-color:var(--accent,#bc874e);box-shadow:0 6px 24px #0002}
.hskduel-ui .hsk-wizard .wizard-order-switch img{width:clamp(80px,12vw,128px);height:clamp(80px,12vw,128px);object-fit:contain;filter:none}
.hskduel-ui .wizard-starred-list>div{font-size:23px;line-height:1.4;align-items:center}
.hskduel-ui .wizard-starred-list strong{font-size:34px}
.hskduel-ui:has(#main>.study) #app>header{border:0;background:transparent;box-shadow:none;position:relative}
.hskduel-ui:has(#main>.study) #main>.study{width:min(1240px,100%);max-width:none;margin:auto}
.hskduel-ui #main>.study .study-top{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;background:none;border:0;box-shadow:none;font-size:22px;padding:0;gap:16px}
.hskduel-ui #main>.study .study-top>span:last-child{justify-self:end}
.hskduel-ui #main>.study .study-top #end{justify-self:start;font-size:20px}
.hskduel-ui #main>.study .track{height:6px;border-radius:8px;overflow:hidden;margin-top:16px}
.hskduel-ui #main>.study .track>div{transition:width .4s ease}
.hskduel-ui #main>.study .question{height:clamp(220px,33dvh,360px);min-height:180px;padding:24px 60px;gap:20px}
.hskduel-ui #main>.study .hanzi{font-size:clamp(86px,9vw,134px)}
.hskduel-ui #main>.study .hanzi.long{font-size:clamp(42px,6vw,80px)}
.hskduel-ui #main>.study .meaning-prompt,.hskduel-ui #main>.study .pinyin-prompt{font-size:clamp(32px,4vw,58px);line-height:1.35;max-width:1000px}
.hskduel-ui #main>.study .choice{min-height:100px;font-size:clamp(23px,2.5vw,32px)!important;padding:20px 28px!important}
.hskduel-ui #main>.study .choice>span[lang=zh-CN]{font-size:clamp(36px,4vw,52px)}
.hskduel-ui #main>.study .syllable{max-width:280px}
.hskduel-ui #main>.study .syllable input{height:72px;font-size:32px}
.hskduel-ui #main>.study .character-input{min-height:90px;font-size:38px}
.hskduel-ui #main>.study .tones button{min-height:66px;font-size:17px}
.hskduel-ui #main>.study .study-actions button,.hskduel-ui #typing-panel .study-actions button{min-height:64px;font-size:23px;padding:14px 28px;border-radius:18px}
.hskduel-ui #main>.study .keyboard-hint{font-size:15px}
.hskduel-ui #main>.study .feedback{padding:28px 36px;border-radius:26px;font-size:25px;background:var(--soft);border:1px solid var(--line);box-shadow:0 14px 50px #0001}
.hskduel-ui #main>.study .feedback>strong{font-size:32px}
.hskduel-ui #main>.study .feedback .answer,.hskduel-ui #main>.study .feedback .answer-hanzi{font-size:40px;line-height:1.35}
.hskduel-ui #main>.study .feedback .answer-hanzi:empty{display:none}
.hskduel-ui #main>.study .feedback .answer small{font-size:21px;color:var(--fg)}
.hskduel-ui #main>.study .feedback .muted{font-size:27px;line-height:1.45;color:var(--fg)}
.hskduel-ui #main>.study .components{font-size:21px;line-height:1.5}
.hskduel-ui #main>.study .word-example button{min-height:52px;font-size:21px}
.hskduel-ui #main>.study:has(.feedback)>.question,.hskduel-ui #main>.study:has(.feedback)>.choices{display:none!important}
.hskduel-ui #main>.study:has(.feedback)>#feedback{margin-top:28px}
.hskduel-ui .example-dialog{width:min(900px,94vw);max-width:900px;max-height:88dvh;padding:42px!important;font-size:26px;line-height:1.65;box-shadow:0 24px 80px #0005}
.hskduel-ui .example-dialog .example-zh{font-size:clamp(30px,3.7vw,46px);line-height:1.7}
.hskduel-ui .example-dialog .example-pinyin{font-size:clamp(23px,2.6vw,32px);line-height:1.6;color:var(--fg);opacity:1}
.hskduel-ui .example-dialog .example-sentence-audio{width:64px;height:64px;min-height:64px;margin:10px 28px 0 0;padding:16px;border-radius:18px;vertical-align:middle}
.hskduel-ui .example-dialog [data-example-close]{min-height:64px;margin:10px 0 0 24px;padding:14px 30px;font-size:23px;vertical-align:middle}
@media(min-width:901px){
 .hskduel-ui #app>header .exam-date[data-visible=true]{position:absolute;left:50%;transform:translateX(-50%);text-align:center;width:max-content!important;max-width:44%;align-items:center;pointer-events:none}
 .hskduel-ui #app>header .exam-date #countdown{font-size:21px;margin-left:0}
 .hskduel-ui #app>header .exam-date time{font-size:15px}
 .hskduel-ui:has(#main>.study) #app{max-width:1440px}
 .hskduel-ui:has(#main>.study) .header-actions #current-page{display:none}
 .hskduel-ui:has(#main>.study) #menu-toggle{min-width:46px;justify-content:center}
}
@media(max-width:720px){
 .hskduel-ui .hsk-wizard .wizard-heading h1{font-size:clamp(26px,6vw,34px);margin:14px 0 4px}
 .hskduel-ui .hsk-wizard .start-row #practice-exercises,.hskduel-ui .hsk-wizard #duel-setup-back,.hskduel-ui .hsk-wizard .start-row #start,.hskduel-ui .hsk-wizard .duel-setup-navigation .primary{font-size:20px;min-height:58px;padding:12px 22px}
 .hskduel-ui .hsk-wizard .practice-options button{height:clamp(76px,12dvh,106px)!important;padding:10px 6px!important}
 .hskduel-ui .hsk-wizard .practice-options .mode-label{font-size:18px!important}
 .hskduel-ui .hsk-wizard .wizard-pools button{padding:26px 10px!important;min-height:96px!important}
 .hskduel-ui .hsk-wizard .wizard-order-switch{gap:6px;padding:8px;border-radius:26px}
 .hskduel-ui .hsk-wizard .wizard-order-switch>button[data-word-order]{min-height:230px;gap:22px;font-size:25px;padding:20px 8px;border-radius:20px}
 .hskduel-ui .hsk-wizard .wizard-order-switch img{width:100px;height:100px}
 .hskduel-ui .wizard-starred-list>div{grid-template-columns:1fr 1.1fr 1.5fr;gap:10px;font-size:18px}
 .hskduel-ui .wizard-starred-list strong{font-size:28px}
 html.hskduel-ui.mobile-playing #main>.study{gap:12px!important;padding:6px 0!important}
 html.hskduel-ui.mobile-playing #main>.study .study-top{grid-template-columns:1fr auto;gap:6px;font-size:17px;min-height:40px}
 html.hskduel-ui.mobile-playing #main>.study .study-top>span:nth-child(2){grid-column:1;grid-row:1;font-size:17px}
 html.hskduel-ui.mobile-playing #main>.study .study-top>span:last-child{grid-column:2;grid-row:1;font-size:16px}
 html.hskduel-ui.mobile-playing #main>.study .study-top #end{display:none}
 html.hskduel-ui.mobile-playing:has(#main>.study) .brand{visibility:visible;pointer-events:auto}
 html.hskduel-ui.mobile-playing #main>.study>.question{height:auto!important;min-height:120px!important;flex:1 1 0!important;padding:12px 32px!important;gap:16px}
 html.hskduel-ui.mobile-playing #main>.study .hanzi{font-size:clamp(76px,12dvh,116px)!important}
 html.hskduel-ui.mobile-playing #main>.study .hanzi.long{font-size:clamp(36px,6.5dvh,58px)!important}
 html.hskduel-ui.mobile-playing #main>.study .meaning-prompt,html.hskduel-ui.mobile-playing #main>.study .pinyin-prompt{font-size:clamp(28px,4.5dvh,38px)}
 html.hskduel-ui.mobile-playing #main>.study .choices{gap:14px!important;flex:none;padding-bottom:12px}
 html.hskduel-ui.mobile-playing #main>.study .choice{min-height:clamp(82px,13dvh,118px);font-size:23px!important;padding:15px 12px!important}
 html.hskduel-ui.mobile-playing #main>.study .choice>span[lang=zh-CN]{font-size:36px}
 html.hskduel-ui.mobile-playing #main>.study .track{margin:0}
 html.hskduel-ui.mobile-playing #main>.study>#feedback:empty{display:none}
 html.hskduel-ui.mobile-playing #main>.study:has(.feedback)>#feedback{display:flex;align-items:center;margin:0;min-height:0;overflow:auto;flex:1}
 html.hskduel-ui.mobile-playing #main>.study .feedback{width:100%;padding:22px 18px!important;margin:0!important;border-radius:24px;flex:none}
 html.hskduel-ui.mobile-playing #main>.study .feedback>strong{font-size:27px}
 html.hskduel-ui.mobile-playing #main>.study .feedback .answer,html.hskduel-ui.mobile-playing #main>.study .feedback .answer-hanzi{font-size:34px!important}
 html.hskduel-ui.mobile-playing #main>.study .feedback .muted{font-size:24px!important;color:var(--fg)}
 html.hskduel-ui.mobile-playing #main>.study .feedback .answer small{font-size:18px}
 html.hskduel-ui.mobile-playing #main>.study .components{font-size:18px}
 html.hskduel-ui.mobile-playing #main>.study .study-actions button,.hskduel-ui #typing-panel .study-actions button{font-size:21px;min-height:58px;padding:12px 20px}
 html.hskduel-ui.steady-typing #typing-panel{max-height:48%}
 html.hskduel-ui.steady-typing:not(.keyboard-open) #typing-panel .syllables{height:clamp(120px,23dvh,190px)}
 html.hskduel-ui.steady-typing:not(.keyboard-open) #typing-panel .syllable{grid-template-columns:94px 1fr;gap:10px}
 html.hskduel-ui.steady-typing:not(.keyboard-open) #typing-panel input,html.hskduel-ui.steady-typing:not(.keyboard-open) #typing-panel .tones button{height:60px;min-height:60px;font-size:23px}
 .hskduel-ui .example-dialog{padding:24px!important;font-size:22px}
 .hskduel-ui .example-dialog .example-pinyin{font-size:23px}
 .hskduel-ui .example-dialog .example-sentence-audio{margin-right:18px}
 .hskduel-ui .example-dialog [data-example-close]{margin-left:16px;font-size:21px}
}
@media(max-height:660px) and (max-width:720px){
 .hskduel-ui .hsk-wizard .wizard-heading h1{font-size:24px;margin-top:8px}
 .hskduel-ui .hsk-wizard .practice-options button{height:clamp(54px,10dvh,68px)!important;gap:4px!important}
 .hskduel-ui .hsk-wizard .practice-options .mode-label{font-size:16px!important}
 .hskduel-ui .hsk-wizard .practice-options .mode-example{font-size:24px!important;min-height:24px!important}
 .hskduel-ui .hsk-wizard .wizard-order-switch>button[data-word-order]{min-height:170px}
 .hskduel-ui .hsk-wizard .start-row #practice-exercises,.hskduel-ui .hsk-wizard .start-row #start{min-height:52px}
 html.hskduel-ui.mobile-playing #main>.study .choice{min-height:66px;font-size:21px!important}
 html.hskduel-ui.mobile-playing #main>.study>.question{min-height:80px!important}
 html.hskduel-ui.mobile-playing #main>.study .feedback{padding:14px!important}
 html.hskduel-ui.mobile-playing #main>.study .feedback>strong{font-size:23px}
 html.hskduel-ui.mobile-playing #main>.study .feedback .muted{font-size:21px!important}
 html.hskduel-ui.keyboard-open #main>.study .hanzi{font-size:62px!important}
 html.hskduel-ui.keyboard-open #main>.study .study-actions button,.hskduel-ui.keyboard-open #typing-panel .study-actions button{min-height:50px;font-size:19px;padding:10px}
}
@media(prefers-reduced-motion:reduce){.hskduel-ui .wizard-order-switch>button,.hskduel-ui #main>.study .track>div{transition:none}}

/* Feedback stays actionable when the original question is hidden on phones. */
.hskduel-ui .feedback{position:relative}
.hskduel-ui #main>.study .feedback .word-star{position:absolute;inset:12px 12px auto auto;min-width:48px;min-height:48px;font-size:30px;padding:4px;z-index:1}
.hskduel-ui #main>.study .feedback>strong{display:block;padding-right:52px}
.hskduel-ui .wizard-order-switch>button{position:relative}
.hskduel-ui .wizard-order-switch>button kbd{position:absolute;top:12px;right:14px;font-size:18px;color:inherit}
@media(hover:none){.hskduel-ui .wizard-order-switch>button kbd{display:none}}

/* A composable direction selector, followed by standalone exercises. */
.hskduel-ui .practice-options.exercise-builder { display:flex; flex-direction:column; gap:22px; width:min(620px,100%); margin:24px auto; }
.hskduel-ui .exercise-direction { display:grid; grid-template-columns:1fr 28px 1fr; align-items:end; gap:14px; }
.hskduel-ui .exercise-direction label { display:flex; flex-direction:column; gap:10px; font-size:15px; color:var(--muted); text-align:left; }
.hskduel-ui .exercise-direction select { width:100%; min-width:0; min-height:60px; font-size:20px; font-weight:700; color:var(--fg); background:var(--card); border:1px solid var(--line); border-radius:16px; padding:12px; }
.hskduel-ui .exercise-arrow { align-self:center; padding-top:24px; font-size:24px; }
.hskduel-ui .exercise-response { display:flex; gap:10px; margin-top:18px; }
.hskduel-ui .exercise-response button { flex:1; min-height:50px; padding:12px; border-radius:14px; font-size:15px; }
.hskduel-ui .exercise-specials { display:grid; grid-template-columns:repeat(4,1fr); gap:12px; padding-top:24px; border-top:1px solid var(--line); }
.hskduel-ui .exercise-specials button { position:relative; min-width:0; min-height:130px; display:flex; flex-direction:column; justify-content:center; align-items:center; gap:12px; border-radius:20px; padding:16px 8px; font-size:15px; }
.hskduel-ui .exercise-specials .special-symbol { font-size:34px; line-height:1; font-weight:700; }
.hskduel-ui .exercise-specials kbd { position:absolute; top:8px; right:10px; font-size:11px; opacity:.65; }
.hskduel-ui .exercise-builder [aria-pressed=true] { color:var(--bg); background:var(--fg); border-color:var(--fg); }
.hskduel-ui .exercise-builder .inactive select { color:var(--muted); }
.hskduel-ui .exercise-builder button:focus-visible,.hskduel-ui .exercise-builder select:focus-visible { outline:3px solid var(--accent); outline-offset:3px; }
@media(max-width:520px){
 .hskduel-ui .practice-options.exercise-builder { gap:18px; margin:12px auto; }
 .hskduel-ui .exercise-direction { gap:8px; grid-template-columns:1fr 20px 1fr; }
 .hskduel-ui .exercise-direction select { min-height:54px; font-size:17px; padding:10px 6px; }
 .hskduel-ui .exercise-specials { grid-template-columns:repeat(2,1fr); gap:8px; padding-top:18px; }
 .hskduel-ui .exercise-specials button { min-height:105px; font-size:13px; gap:10px; }
 .hskduel-ui .exercise-specials kbd { display:none; }
}
.hskduel-ui .hsk-wizard[data-setup=exercise] .practice-options.exercise-builder { display:flex!important; gap:24px!important; margin:20px auto!important; }
.hskduel-ui .hsk-wizard .exercise-builder .exercise-response button { height:52px!important; min-height:48px!important; padding:10px!important; }
.hskduel-ui .hsk-wizard .exercise-builder .exercise-specials button { height:128px!important; min-height:92px!important; gap:12px!important; }
.hskduel-ui .hsk-wizard .exercise-builder [aria-pressed=true] { color:var(--bg)!important; background:var(--fg)!important; border-color:var(--fg)!important; box-shadow:none!important; }
@media(min-width:900px){.hskduel-ui .hsk-wizard .exercise-builder .exercise-specials kbd{display:block!important}}
@media(max-height:700px){
 .hskduel-ui .hsk-wizard[data-setup=exercise] .practice-options.exercise-builder { gap:16px!important; margin:8px auto!important; }
 .hskduel-ui .hsk-wizard .exercise-builder .exercise-specials button { height:96px!important; }
 .hskduel-ui .exercise-direction select { min-height:50px; }
 .hskduel-ui .exercise-specials { padding-top:16px; }
}
@media(max-height:480px) and (orientation:landscape){
 .hskduel-ui .hsk-wizard[data-setup=exercise] .practice-options.exercise-builder { display:grid!important; grid-template-columns:1fr 1fr!important; width:100%; }
 .hskduel-ui .exercise-specials { border:0; padding-top:0; }
 .hskduel-ui .exercise-response { margin-top:8px; }
}

/* The mobile keyboard re-parents the form outside .study. Size both hosts. */
@media(max-width:720px){
 html.hskduel-ui.mobile-playing #answer-form[data-phase="tones"] .syllables{display:block;max-height:42dvh;overflow:auto}
 html.hskduel-ui.mobile-playing #answer-form[data-phase="tones"] .syllable{display:grid;grid-template-columns:minmax(94px,28%) minmax(0,1fr);gap:8px;max-width:none;margin-bottom:10px}
 html.hskduel-ui.mobile-playing #answer-form[data-phase="tones"] input{height:56px;min-height:56px;font-size:21px;padding:6px;line-height:1.4}
 html.hskduel-ui.mobile-playing #answer-form[data-phase="tones"] .tones button{min-height:56px;font-size:16px}
 html.hskduel-ui.steady-typing #typing-panel{display:flex;flex-direction:column;overflow:hidden}
 html.hskduel-ui.steady-typing #typing-panel form{display:flex;flex-direction:column;min-height:0}
 html.hskduel-ui.steady-typing #typing-panel .syllables{height:auto!important;max-height:34dvh;flex:1 1 auto;min-height:0;padding:2px 0;overflow-y:auto;overflow-x:hidden}
 html.hskduel-ui.steady-typing #typing-panel .syllable{grid-template-columns:minmax(94px,28%) minmax(0,1fr);gap:8px;margin-bottom:8px}
 html.hskduel-ui.steady-typing #typing-panel input{height:56px!important;min-height:56px!important;font-size:21px!important;line-height:1.4;padding:6px;box-sizing:border-box}
 html.hskduel-ui.steady-typing #typing-panel .tones button{height:56px!important;min-height:56px!important;font-size:16px!important}
 html.hskduel-ui.steady-typing #typing-panel .study-actions{flex:none}
}
@media(max-width:720px){html.hskduel-ui.mobile-playing #main:has(>.study){overflow:hidden!important}}

/* Keep typed answers next to their prompt on desktop. */
@media(min-width:721px){
 .hskduel-ui #main>.study:has(.character-input) .question{height:auto;min-height:0;padding:24px 40px 16px;gap:12px}
 .hskduel-ui .duel-page[data-status=racing][data-mode=typing] .question{flex:0 0 auto;min-height:0;padding:16px 0 8px}
 .hskduel-ui .duel-page[data-status=racing][data-mode=typing] .duel-study{justify-content:center}
}
.hskduel-ui #reverse-exercise{display:grid;place-items:center;min-width:52px;min-height:52px;padding:8px;border:1px solid var(--line);border-radius:16px;color:var(--fg);background:var(--soft);cursor:pointer}
.hskduel-ui #reverse-exercise:disabled{opacity:.35;cursor:default}
.exam-exit-actions{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;margin-top:28px}
.exam-exit-actions button{flex:1 1 150px;min-height:52px;padding:14px 22px}
#only-starred-words{margin-top:24px;margin-bottom:16px;min-height:52px}

.hskduel-ui .exercise-direction{grid-template-columns:minmax(0,1fr) 52px minmax(0,1fr);gap:14px;align-items:end}
.hskduel-ui #reverse-exercise{height:60px!important;min-height:52px;align-self:end;opacity:1}

.hskduel-ui #modal:has(.exam-exit-actions)>#close-modal{display:none}