:root{--blue:#1428a0;--accent:#1428a0;--bg:#f1f3f7;--surface:#fafbfd;--ink:#202737;--muted:#535f73;--border:#d4dbe8;--tint:#e7ecfa;--ok:#17623e;--okbg:#eaf3ed;--bad:#953e32;--badbg:#fff0ec;--base:17px;color-scheme:light}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:var(--base)/1.85 Tahoma,'Noto Sans Thai',sans-serif}html[data-size=large]{--base:20px}html[data-theme=dark]{--bg:#151922;--surface:#202632;--ink:#e4e8f1;--muted:#b2bdd0;--border:#465267;--accent:#a6b8ff;--tint:#2b3551;--ok:#a3dfbc;--okbg:#193d30;--bad:#ffb6aa;--badbg:#442c2b;color-scheme:dark}a{color:var(--accent);text-underline-offset:4px}button,input,select{font:inherit}button,a,summary{touch-action:manipulation}button,summary{cursor:pointer}button{color:inherit}button:disabled{cursor:default;opacity:.5}a,button,input,select,summary{outline-offset:4px}:focus-visible{outline:3px solid #db9f35}header{display:flex;align-items:center;flex-wrap:wrap;gap:20px;padding:18px max(24px,calc((100% - 1120px)/2));background:var(--surface);border-bottom:1px solid var(--border)}.brand{font-size:25px;font-weight:bold;text-decoration:none;display:flex;align-items:center;gap:10px;color:var(--ink)}.mark{background:var(--blue);color:#fff;border-radius:12px;padding:0 12px;font-size:28px}.display-tools{display:flex;gap:8px;margin-left:auto;order:3}.display-tools button{background:var(--tint);border:1px solid var(--border);border-radius:50px;padding:6px 13px;min-height:44px;min-width:44px}nav{display:flex;gap:24px;font-size:15px;margin-left:auto}nav a{text-decoration:none;white-space:nowrap;color:var(--muted);padding:8px 0}nav a:hover{color:var(--accent)}main{max-width:1120px;padding:34px 24px 70px;margin:auto;min-height:70vh}h1{font-size:clamp(32px,4vw,48px);line-height:1.4;margin:14px 0 18px;letter-spacing:-1px}h1 em{font-style:normal;color:var(--accent)}h2{font-size:1.35em;line-height:1.65;margin:0 0 12px}h3{font-size:1.05em;margin:10px 0}p{margin:12px 0}.muted,.hint{color:var(--muted)}.eyebrow{font-size:13px;letter-spacing:1px;color:var(--accent);font-weight:bold}.welcome{margin:10px 0 28px}.welcome h1 br{display:none}.welcome h1 em{margin-left:12px}.card{background:var(--surface);border:1px solid var(--border);border-radius:22px;padding:28px}.setup{max-width:100%}.form-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px;margin-top:22px}label{display:block;font-size:15px;font-weight:bold}select,input{display:block;width:100%;max-width:100%;border:1px solid var(--border);border-radius:12px;padding:13px 12px;margin-top:8px;background:var(--surface);color:var(--ink);font-size:16px;min-height:50px}.btn{display:inline-block;min-height:48px;padding:11px 23px;background:var(--blue);color:#fff;border:1px solid var(--blue);border-radius:30px;font-weight:bold;text-decoration:none;text-align:center}.btn:hover{filter:brightness(1.13)}.btn.secondary{background:var(--surface);border-color:var(--border);color:var(--accent)}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}details{margin-top:20px;border-top:1px solid var(--border);padding-top:14px}summary{min-height:44px;line-height:1.6;padding:8px 0;font-weight:bold;font-size:.93em}details p{font-size:.94em}details[open]>summary{margin-bottom:10px}.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:24px}.quick{text-decoration:none;color:var(--ink)}.quick>span{color:var(--accent);font-size:22px}.quick p{font-size:14px;color:var(--muted)}.badge{display:inline-block;background:var(--tint);color:var(--accent);border-radius:20px;font-size:13px;line-height:1.6;padding:7px 12px}.notice{padding:18px 22px;background:var(--tint);border-radius:15px;margin-bottom:20px}.resume{font-size:15px}.exam-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.exam-head h2{margin:4px 0}.timer{font-variant-numeric:tabular-nums;font-size:18px;border-radius:30px;background:var(--surface);border:1px solid var(--border);padding:8px 18px}.progress{height:5px;background:var(--border);border-radius:10px;margin:10px 0 24px}.progress i{display:block;height:100%;background:var(--accent);border-radius:10px}.exam-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:22px}.question{min-width:0}.question-meta{display:flex;align-items:center;justify-content:space-between;gap:12px}.flag-btn{background:none;border:none;font-size:14px;min-height:44px;white-space:nowrap;color:var(--muted)}.question h2{font-size:1.18em;font-weight:600;line-height:1.85;margin:22px 0}.option{display:flex;align-items:flex-start;text-align:left;gap:13px;width:100%;padding:16px;border:1px solid var(--border);border-radius:15px;background:var(--surface);color:var(--ink);margin:12px 0;font-size:1em;line-height:1.8}.letter{flex:0 0 30px;border:1px solid var(--border);border-radius:8px;text-align:center;line-height:30px}.option.selected{border-color:var(--accent);background:var(--tint)}.option:disabled{opacity:1}.option.correct{border-color:var(--ok);background:var(--okbg)}.option.wrong{border-color:var(--bad);background:var(--badbg)}.option strong{display:block;font-size:14px;color:var(--ok)}.explain{background:var(--tint);padding:20px;border-radius:16px;margin-top:22px;font-size:.95em}.explain h3{margin-top:0}.explain p{margin:16px 0}.explain a{overflow-wrap:anywhere}mark{background:#f6dca4;color:#35260a;border-radius:4px;padding:0 3px}.question-foot{display:flex;justify-content:space-between;gap:12px;margin-top:22px}.hint{font-size:14px}.inline-glossary{font-size:.94em}.map{margin:0;padding:18px}.qmap{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:15px}.qmap button{background:var(--surface);border:1px solid var(--border);border-radius:8px;min-height:44px}.qmap button.done{background:var(--tint)}.qmap button.current{outline:2px solid var(--accent)}.qmap button.flag{box-shadow:inset 0 -4px #b78a30}.map p{font-size:13px}.submit{width:100%;margin-top:16px;font-size:14px;padding:12px}.result{max-width:780px;margin:auto}.result-hero{background:var(--blue);border-radius:24px;padding:32px;color:#fff;text-align:center;margin-bottom:20px}.result-hero strong{display:block;font-size:64px;line-height:1.5}.result-hero h2{font-size:22px}.score-row{display:flex;justify-content:space-between;gap:20px;padding:18px 0;border-bottom:1px solid var(--border)}.score-row small{display:block;color:var(--muted)}.score-row strong{white-space:nowrap}.search-label{max-width:520px;margin:24px 0}.term{margin:12px 0;padding:12px 22px}.term-tip{background:var(--tint);padding:14px;border-radius:12px}.video-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.video h2{font-size:22px;margin-top:16px}.video-meta{font-size:14px;color:var(--muted);margin-bottom:22px}.section-head{display:flex;align-items:center;justify-content:space-between;gap:15px}.history-item{display:flex;justify-content:space-between;gap:20px;padding:22px 0;border-bottom:1px solid var(--border)}.history-item p{font-size:14px}.empty{text-align:center;padding:30px}footer{text-align:center;color:var(--muted);font-size:13px;border-top:1px solid var(--border);padding:25px}.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:var(--surface);padding:10px;z-index:5}small{font-size:.82em}html[data-size=large] .question h2{font-size:1.18em}@media(max-width:1000px){nav{order:4;width:100%;margin:0;justify-content:space-between}.form-grid{grid-template-columns:1fr}.display-tools{margin-left:auto}.exam-layout{grid-template-columns:1fr}.quick-grid{gap:12px}.qmap{grid-template-columns:repeat(10,minmax(0,1fr))}}@media(max-width:600px){header{padding:14px 18px;gap:10px}nav{gap:18px;overflow-x:auto;justify-content:flex-start;font-size:14px}.brand{font-size:22px}main{padding:22px 16px 45px}.welcome h1{font-size:34px}.welcome h1 br{display:block}.welcome h1 em{margin-left:0}.welcome p{font-size:16px}.card{padding:20px;border-radius:19px}.setup h2{font-size:22px}.quick-grid,.video-grid{grid-template-columns:1fr}.quick{padding:18px 20px}.quick p{margin:4px 0}.quick h3{margin:3px 0}.quick>span{float:right}.question{padding:18px 15px}.question h2{font-size:1.06em;line-height:1.85;margin:18px 0}.option{padding:13px 11px;gap:10px}.letter{flex-basis:27px;line-height:27px}.question-meta{align-items:flex-start}.badge{font-size:12px}.flag-btn{font-size:13px}.explain{padding:16px}.question-foot .btn{padding:11px 17px;font-size:15px}.timer{padding:7px 12px;font-size:15px}.exam-head h2{font-size:22px}.qmap{grid-template-columns:repeat(5,minmax(0,1fr))}.term{padding:10px 18px}.video h2{font-size:20px}.history-item{font-size:15px}.result-hero{padding:25px}.score-row{font-size:15px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* Typography and layout: a calm, editorial learning space. */
@font-face{font-family:Plex Thai;src:url('fonts/IBMPlexSansThai-Regular.ttf') format('truetype');font-weight:400;font-display:swap}
@font-face{font-family:Plex Thai;src:url('fonts/IBMPlexSansThai-Medium.ttf') format('truetype');font-weight:500 800;font-display:swap}
@font-face{font-family:Kanit;src:url('fonts/Kanit-SemiBold.ttf') format('truetype');font-weight:600 900;font-display:swap}
:root{--bg:#f5f5f2;--surface:#fff;--ink:#202330;--muted:#646777;--border:#dedfE4;--tint:#eceefa;--base:17px}
body{font-family:'Plex Thai',sans-serif;line-height:1.8;-webkit-font-smoothing:antialiased}
h1,h2,h3,.brand{font-family:Kanit,'Plex Thai',sans-serif;font-weight:600;letter-spacing:0}
button,input,select{font-family:inherit}
header{max-width:1320px;margin:auto;padding:24px 48px;background:transparent;border:0;gap:32px}
.brand{font-size:26px;gap:12px}.mark{border-radius:50%;width:40px;height:40px;padding:0;text-align:center;line-height:40px;font-size:25px}
nav{gap:28px;font-size:15px}nav a{position:relative}nav a[aria-current=page]{color:var(--accent);font-weight:500}nav a[aria-current=page]:after{content:'';position:absolute;width:5px;height:5px;border-radius:50%;background:var(--accent);bottom:0;left:calc(50% - 2px)}
.display-tools{margin-left:10px;gap:4px}.display-tools button{border:0;background:transparent;padding:6px 9px}
main{max-width:1224px;padding:52px 48px 88px;min-height:73vh}
h1{font-size:clamp(38px,4.4vw,60px);line-height:1.45;margin:10px 0 24px}h2{font-size:25px;line-height:1.6}h3{font-size:21px}
.home-grid{display:grid;grid-template-columns:1.1fr 1fr;align-items:center;gap:80px;min-height:440px}
.welcome{margin:0}.eyebrow{font:500 12px/1.8 'Plex Thai',sans-serif;letter-spacing:1.8px;color:var(--muted)}
.welcome h1{font-size:clamp(42px,5.1vw,68px);line-height:1.38;margin:24px 0}.welcome h1 br{display:block}.welcome h1 em{margin:0}
.intro{font-size:19px;line-height:1.85;color:var(--muted)}.hero-note{display:flex;align-items:center;gap:14px;font-size:13px;margin-top:36px;color:var(--muted)}.note-line{width:34px;height:1px;background:var(--accent)}
.card{border:1px solid var(--border);border-radius:24px;padding:32px;box-shadow:none}
.setup{padding:34px;background:var(--surface);box-shadow:0 20px 60px #1b235508}.setup-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.step-label{font-size:13px;color:var(--muted)}.badge{font-size:12px;padding:5px 11px}.setup h2{font-size:27px;margin:0 0 20px}.mode-label{font-size:13px;color:var(--muted);font-weight:400}select,input{border-radius:10px;font-size:16px;min-height:52px;padding:12px 14px;background:var(--surface)}
#modeHelp{font-size:14px;min-height:26px;margin:12px 0 4px}.form-grid{grid-template-columns:1fr;gap:16px;margin:8px 0 16px}.form-grid label{font-size:13px}.customize{margin:12px 0 22px;padding-top:5px;border-bottom:1px solid var(--border)}.customize summary{font-size:14px;font-weight:400;padding:12px 0}.customize[open]{padding-bottom:8px}
.btn{font-weight:500;border-radius:12px;padding:13px 24px;transition:background .18s,transform .18s}.btn:hover{transform:translateY(-1px)}.start-btn{width:100%;display:flex;align-items:center;justify-content:space-between;text-align:left;font-size:18px;padding:16px 22px}.start-btn span{font-size:24px;line-height:1}.quiet-link{display:block;text-align:center;font-size:12px;color:var(--muted);text-decoration:none;margin-top:15px}.quiet-link:hover{text-decoration:underline}
.study-section{margin-top:64px;border-top:1px solid var(--border);padding-top:30px}.study-section .section-head h2{font-size:22px;margin:0}.study-section .section-head>span{font-size:13px}.quick-grid{grid-template-columns:1fr 1fr;gap:40px;margin-top:22px}.quick{display:flex;align-items:center;gap:20px;padding:16px 0;border-bottom:1px solid var(--border);border-radius:0;background:transparent}.quick h3{font-size:20px;margin:0}.quick p{font-size:14px;margin:3px 0}.quick .quick-icon{display:flex;align-items:center;justify-content:center;width:54px;height:54px;flex-shrink:0;border-radius:16px;background:var(--tint);font-family:Kanit;font-size:26px}.quick .quick-arrow{margin-left:auto;font-size:25px;transition:transform .18s}.quick:hover .quick-arrow{transform:translate(3px,-3px)}
html[data-page=exam] main{max-width:840px;padding-top:24px}html[data-page=exam] nav,html[data-page=exam] footer{display:none}html[data-page=exam] header{max-width:840px;padding-bottom:12px}html[data-page=exam] .display-tools{margin-left:auto}
.exam-head h2{font-family:'Plex Thai';font-size:22px}.exam-head .eyebrow{letter-spacing:.3px}.timer{font-size:16px;background:transparent;border:0;padding:0}.progress{height:3px;margin:16px 0 28px}.exam-layout{display:block}.question{padding:32px 38px}.question h2{font-family:'Plex Thai';font-size:1.35em;font-weight:500;line-height:1.75;margin:25px 0}.question-meta .badge{background:transparent;padding-left:0;color:var(--muted)}.option{border-radius:12px;padding:17px 18px;gap:16px;margin:10px 0;transition:border-color .18s,background .18s}.option:not(:disabled):hover{border-color:var(--accent);background:var(--tint)}.letter{border-radius:50%;font-size:14px;flex-basis:29px;line-height:27px;color:var(--muted)}.option.selected .letter{background:var(--accent);border-color:var(--accent);color:var(--bg)}.option.correct .letter{background:var(--ok);border-color:var(--ok);color:var(--surface)}.option.wrong .letter{background:var(--bad);border-color:var(--bad);color:var(--surface)}.hint{font-size:12px}.inline-glossary{margin-top:22px}.inline-glossary summary{font-size:14px;font-weight:400;color:var(--muted)}.question-foot{margin-top:26px}.explain{padding:24px;background:var(--tint);border-radius:14px;scroll-margin:20px}.explain h3{font-size:23px}.explain details summary{font-weight:400;font-size:14px}.exam-layout aside{display:flex;align-items:flex-start;gap:20px;margin-top:20px}.map{flex:1;border:0;background:transparent;padding:0}.map summary{font-size:13px;font-weight:400;color:var(--muted)}.submit{width:auto;flex-shrink:0;margin:0;border:0!important;background:transparent!important;font-size:13px;padding:8px 0}.qmap{grid-template-columns:repeat(10,minmax(0,1fr))}
html[data-page=glossary] main,html[data-page=sources] main,html[data-page=history] main{max-width:900px}.search-label{max-width:100%;font-size:13px}.term{border:0;border-bottom:1px solid var(--border);border-radius:0;background:transparent;padding:14px 0;margin:0}.term summary{font-family:Kanit;font-size:22px;font-weight:600}.term[open]{padding-bottom:24px}.term p{max-width:650px}.term-tip{padding:18px}.video-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.video{padding:26px;display:flex;flex-direction:column}.video h2{font-size:22px}.video>p{font-size:14px}.video .btn{margin-top:auto}.video details{font-size:14px}.video .badge{align-self:flex-start}.video-meta{font-size:12px}.notice{font-size:14px}.result-hero{padding:40px;border-radius:24px}.result-hero strong{font-family:Kanit;font-size:80px}.result-hero h2{font-size:24px}.score-row{font-size:16px}footer{max-width:1128px;margin:auto;display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;text-align:left;padding:25px 0 32px;font-size:14px}footer>a{font-size:13px;text-decoration:none;color:var(--muted)}footer small{width:100%;font-size:11px}.footer-dot{padding:0 12px;color:var(--border)}
html[data-theme=dark]{--bg:#171a22;--surface:#20242f;--ink:#eaebf2;--muted:#adb2c5;--border:#363d50;--tint:#28314d;--accent:#a8b8ff}html[data-theme=dark] .setup{box-shadow:none}
@media(min-width:1600px){main{padding-top:80px}.home-grid{min-height:500px}}
@media(max-width:1000px){header{padding:20px 28px;gap:18px}nav{order:0;width:auto;margin-left:auto;gap:20px}.display-tools{order:3;margin:0}main{padding:38px 28px 64px}.home-grid{gap:35px;grid-template-columns:1fr 1fr}.welcome h1{font-size:48px}.setup{padding:26px}.setup h2{font-size:23px}.video-grid{grid-template-columns:1fr 1fr}footer{margin:0 28px}.quick-grid{gap:28px}}
@media(max-width:700px){header{padding:17px 22px 0;gap:16px}.brand{font-size:24px}.mark{width:34px;height:34px;line-height:34px;font-size:23px}.display-tools{margin-left:auto;order:0}nav{order:4;width:100%;justify-content:space-between;gap:10px;border-bottom:1px solid var(--border);font-size:13px;padding:1px 0 10px}nav a{padding:8px 0}.home-grid{display:block;min-height:0}.welcome{padding:10px 2px 26px}.welcome .eyebrow{font-size:10px;letter-spacing:1.4px}.welcome h1{font-size:clamp(38px,10vw,52px);margin:16px 0 12px;line-height:1.35}.intro{font-size:16px;line-height:1.7;margin-bottom:0}.intro br{display:none}.hero-note{display:none}main{padding:24px 22px 48px}.setup{padding:24px;border-radius:20px}.setup-heading{margin-bottom:13px}.setup h2{font-size:24px;margin-bottom:16px}.study-section{margin-top:36px;padding-top:24px}.study-section .section-head>span{display:none}.quick-grid{grid-template-columns:1fr;gap:4px;margin-top:10px}.quick{gap:16px;padding:19px 0}.quick h3{font-size:20px}.quick p{font-size:13px}.quick .quick-icon{width:46px;height:46px;border-radius:13px}.quick>span{float:none}.section-head h1,h1{font-size:36px}.video-grid{grid-template-columns:1fr}.video{padding:24px}.video h2{font-size:23px}.video .btn{align-self:flex-start}.card{border-radius:20px}.question{padding:22px 18px}.question h2{font-size:1.22em;line-height:1.8;margin:20px 0}.option{font-size:1em;padding:14px 12px;gap:12px}.letter{flex-basis:26px;line-height:24px}.exam-head h2{font-size:20px}.exam-head .eyebrow{font-size:11px}.question-meta{align-items:center}.flag-btn{padding-right:0}.question-foot .btn{font-size:15px;padding:12px 18px}.exam-layout aside{display:block}.submit{display:block;margin:15px auto 0}.qmap{grid-template-columns:repeat(6,minmax(0,1fr))}.explain{padding:20px 16px}.explain h3{font-size:21px}html[data-page=exam] header{padding:16px 22px}html[data-page=exam] main{padding-top:10px}.term{padding:12px 0;border-radius:0}.term summary{font-size:21px}.result-hero strong{font-size:72px}footer{margin:0 22px;padding:22px 0;font-size:13px}footer small{font-size:11px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}.btn:hover{transform:none}}

/* A restrained blue / warm coral / leafy green triad. */
:root{--peach:#f9eee7;--peach-ink:#8e4b35;--mint:#eaf3e9;--mint-ink:#3f6946;--base:18px}
html[data-theme=dark]{--peach:#382b29;--peach-ink:#efbca8;--mint:#23362e;--mint-ink:#b5dcb7}
.illustration{display:inline-block;object-fit:contain;flex-shrink:0;vertical-align:middle;width:56px;height:56px}
.home-grid{gap:58px}.welcome h1{font-size:clamp(38px,4.2vw,57px);line-height:1.45}.care-art{display:flex;gap:15px;align-items:center;flex-wrap:wrap;margin-top:30px}.care-art .illustration{width:46px;height:46px;padding:8px;border-radius:50%;background:var(--tint)}.care-art .illustration:nth-child(2){background:var(--peach)}.care-art .illustration:nth-child(3){background:var(--mint)}.care-art>span{display:block;width:100%;font-size:12px;color:var(--muted)}.required-note{float:right;color:var(--peach-ink);font-size:11px}.setup .mode-label{margin-top:15px}.setup #selectionHelp{font-size:12px;min-height:22px;margin:7px 0 18px}.setup:has(#start:disabled) #start{opacity:1;background:var(--border);border-color:var(--border);color:var(--muted);transform:none}.quick .illustration{width:48px;height:48px;padding:9px;border-radius:15px;background:var(--mint)}.quick:nth-child(2) .illustration{background:var(--peach)}
.micro-label{display:block;font-size:12px;font-weight:500;letter-spacing:.3px;color:var(--muted);margin-bottom:9px}.question h2{font-size:1.3em;line-height:1.85;font-weight:500}.option{line-height:1.85;padding:18px}.question .option strong{font-size:12px}.calm-explain{background:var(--surface);border-top:1px solid var(--border);border-radius:0;padding:30px 0 0;margin-top:30px}.feedback-heading{display:flex;align-items:flex-start;gap:14px;margin-bottom:22px}.feedback-heading h3{margin:0;font-size:24px}.feedback-heading .hint{margin:6px 0;line-height:1.7}.feedback-symbol{display:grid;place-items:center;background:var(--mint);color:var(--mint-ink);width:42px;height:42px;border-radius:50%;flex-shrink:0;font-size:23px}.reason-block,.answer-block,.takeaway{padding:22px 24px;border-radius:16px;margin:14px 0}.reason-block{background:var(--peach);border-left:3px solid #ca8f75}.answer-block{background:var(--tint);border-left:3px solid var(--accent)}.takeaway{background:var(--mint);border-left:3px solid #7d9f78}.calm-explain p{font-size:1em;line-height:1.9;margin:0}.calm-explain .micro-label{font-size:12px}.answer-block p{font-weight:500}.calm-explain details{margin-top:22px}.alternative{padding:18px 0;border-bottom:1px solid var(--border)}.alternative strong{font-size:.95em;font-weight:500}.alternative p{color:var(--muted);font-size:.94em;margin-top:8px}.finish-prompt{padding:25px;border:1px solid var(--border);background:var(--surface)}.finish-prompt h3{margin-top:0}.finish-prompt .actions{margin-top:12px}
.section-head>.illustration{width:80px;height:80px}.flash-filters{display:grid;grid-template-columns:1.5fr 1fr;gap:20px;max-width:800px;margin:32px auto}.flash-filters label{font-size:13px;font-weight:400}.flash-stage{max-width:720px;margin:36px auto 45px}.flash-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:13px;margin:15px 4px}.flash-card{width:100%;min-height:350px;padding:36px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;border:1px solid var(--border);border-radius:28px;background:var(--surface);box-shadow:0 14px 40px #20284e06;gap:16px;color:var(--ink);position:relative;overflow:hidden;transition:background .22s,box-shadow .22s}.flash-card:before{content:'';position:absolute;top:-55px;right:-55px;width:155px;height:155px;background:var(--tint);border-radius:50%;pointer-events:none}.flash-card>.illustration{width:62px;height:62px;margin-bottom:4px}.flash-card .micro-label{margin:0}.flash-card strong{font:600 clamp(26px,3.3vw,38px)/1.6 Kanit,'Plex Thai',sans-serif}.flash-card .definition{max-width:550px;font-size:20px;line-height:1.85}.flash-card .memory-tip{font-size:15px;line-height:1.8;background:var(--mint);padding:12px 18px;border-radius:12px;max-width:550px;color:var(--mint-ink)}.flip-hint{font-size:13px;color:var(--accent);margin-top:16px}.flash-card.flipped{animation:card-reveal .22s ease-out}.flash-controls{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:20px}.flash-controls .btn{font-size:14px;padding:12px 17px}.flash-count{text-align:center}.game-invite{display:flex;align-items:center;gap:24px;background:var(--peach);padding:26px 30px;border-radius:20px;text-decoration:none;color:var(--ink);max-width:800px;margin:20px auto}.game-invite h3{margin:0;font-size:23px}.game-invite p{font-size:14px;color:var(--muted);margin:4px 0}.game-invite>span{margin-left:auto;font-size:27px;color:var(--accent)}
html[data-page=game] main{max-width:950px}.game-intro{max-width:720px;margin:20px auto;text-align:center;padding:45px}.game-intro>.illustration{width:90px;height:90px;display:block;margin:0 auto 24px}.game-intro h1{font-size:43px}.game-intro .actions{justify-content:center;margin:28px 0}.game-intro>a{font-size:14px}.game-rules{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-top:25px}.game-rules span{padding:5px 12px;background:var(--tint);border-radius:25px}.game-question{text-align:center;padding:24px 30px 36px}.game-question>.illustration{width:70px;height:70px;margin-bottom:20px}.game-question h2{font-family:'Plex Thai';font-size:26px;font-weight:500;line-height:1.8;max-width:700px;margin:10px auto}.game-answers{display:grid;grid-template-columns:1fr 1fr;gap:15px}.game-option{display:flex;align-items:center;gap:16px;border:1px solid var(--border);border-radius:17px;min-height:95px;text-align:left;font-size:19px;font-weight:500;padding:22px;color:var(--ink);background:var(--surface);transition:transform .16s,border-color .16s}.game-option>span{font-size:21px;width:35px;flex-shrink:0;text-align:center;color:var(--accent)}.game-option.tone-0{background:var(--tint)}.game-option.tone-1{background:var(--peach)}.game-option.tone-2{background:var(--mint)}.game-option.tone-3{background:var(--surface)}.game-option.tone-1>span{color:var(--peach-ink)}.game-option.tone-2>span{color:var(--mint-ink)}.game-option:hover:not(:disabled){border-color:var(--accent);transform:translateY(-2px)}.game-option:disabled{opacity:.6}.game-option.is-correct{opacity:1;border:2px solid var(--ok);background:var(--okbg)}.game-option.is-wrong{opacity:1;border:2px solid var(--bad);background:var(--badbg)}.game-feedback{margin-top:25px;border-radius:18px;background:var(--surface);padding:25px;animation:feedback-in .2s ease-out}.game-feedback h3{margin-top:0}.game-feedback .btn{margin-top:10px}.game-wrap>.hint{text-align:center}
.quiet-back{display:inline-block;font-size:14px;margin-bottom:22px;text-decoration:none}.result-hero{background:var(--tint);color:var(--ink);padding:36px}.result-hero>.illustration{display:block;margin:0 auto 16px;width:70px;height:70px}.result-hero>span{color:var(--muted);font-size:14px}.result-hero>strong{color:var(--accent)}.result-hero .score-total{font:400 23px 'Plex Thai'}.result-hero p{font-size:12px;color:var(--muted)}.result-hero h2{font-size:24px;max-width:560px;margin:0 auto}.metric-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:20px 0}.metric-strip>div{background:var(--surface);padding:18px 12px;border-radius:16px;text-align:center;border:1px solid var(--border)}.metric-strip strong{display:block;font:600 30px Kanit;color:var(--accent)}.metric-strip span{font-size:13px;color:var(--muted)}.metric-strip>div:nth-child(2){background:var(--peach)}.mastery-list{margin-top:22px}.mastery-row{margin:20px 0}.mastery-row>div:first-child{display:flex;justify-content:space-between;gap:15px;font-size:15px}.mastery-row strong{font-weight:500}.mastery-row span{color:var(--accent);white-space:nowrap}.mastery-track{height:7px;background:var(--border);border-radius:20px;margin:10px 0 5px;overflow:hidden}.mastery-track i{display:block;height:100%;background:var(--accent);border-radius:20px}.mastery-row:nth-child(2n) .mastery-track i{background:#749569}.mastery-row small{font-size:12px;color:var(--muted)}.coach-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:24px 0 12px}.coach-panel{padding:26px;border-radius:20px}.coach-panel.mint{background:var(--mint)}.coach-panel.peach{background:var(--peach)}.coach-panel h3{font-size:22px;margin:8px 0 17px}.coach-panel p{font-size:15px;line-height:1.85;margin:16px 0}.coach-panel strong{font-weight:500}.coach-panel small{display:block;font-size:12px;color:var(--muted)}.coach-panel a{font-size:13px}.result>.hint{margin-bottom:32px}.compact-label{font-size:12px;font-weight:400;min-width:150px}.compact-label select{font-size:14px;padding:9px 12px;min-height:42px;margin-top:5px}.review-list{margin-top:36px}.review-list .section-head h2{font-size:24px;margin:0}.review-question{border-bottom:1px solid var(--border);border-top:0;padding:16px 0;margin:0}.review-question summary{display:flex;align-items:flex-start;gap:14px;font-weight:400;font-size:16px;line-height:1.8;list-style:none}.review-question summary::-webkit-details-marker{display:none}.review-question summary:after{content:'+';margin-left:auto;color:var(--accent);flex-shrink:0}.review-question[open] summary:after{content:'−'}.review-status{color:var(--accent);width:24px;flex-shrink:0;font-weight:500}.chosen-answer{font-size:15px;padding:16px;border-radius:12px;background:var(--surface)}.review-question .calm-explain{padding:20px;border-radius:18px;border:1px solid var(--border);margin-bottom:12px}.mode-tabs{display:flex;flex-wrap:wrap;gap:8px;margin:28px 0 22px}.mode-tabs button{font-size:14px;border-radius:30px;border:1px solid var(--border);background:var(--surface);padding:11px 16px;min-height:46px;color:var(--muted)}.mode-tabs button[aria-pressed=true]{background:var(--blue);border-color:var(--blue);color:#fff}.mode-tabs span{display:inline-block;margin-left:8px;font-size:11px;opacity:.8}.scope-label{max-width:350px;margin-bottom:22px}.progress-card{margin-bottom:24px}.trend{display:flex;gap:12px;align-items:flex-end;overflow-x:auto;margin-top:30px;padding:8px 0}.trend-point{display:flex;flex:1;min-width:46px;max-width:100px;flex-direction:column;text-align:center;text-decoration:none}.trend-point>span{font-size:14px;color:var(--accent);margin-bottom:8px}.trend-point>div{height:110px;background:var(--bg);border-radius:8px;display:flex;align-items:flex-end;overflow:hidden}.trend-point i{display:block;width:100%;background:var(--accent);border-radius:8px;opacity:.7}.trend-point:last-child i{opacity:1}.trend-point small{font-size:10px;color:var(--muted);margin-top:9px}.history-records{margin-top:32px}.history-records h2{font-size:24px}.history-item{text-decoration:none;color:var(--ink);align-items:center;padding:23px 0}.history-item strong{font-weight:500}.history-item p{font-size:12px;margin:5px 0}.history-item>div:last-child{text-align:right;white-space:nowrap}.history-item>div:last-child>span{display:block;font-size:12px;color:var(--accent)}.manage-history summary{font-size:13px;color:var(--muted);font-weight:400}.empty>.illustration{width:65px;height:65px;margin-bottom:15px}.video-grid{margin-top:28px}.video-cover{display:flex;align-items:center;justify-content:space-between;padding:24px;background:var(--tint);border-radius:15px;margin-bottom:22px}.video:nth-child(2) .video-cover{background:var(--mint)}.video:nth-child(3) .video-cover{background:var(--peach)}.video-cover>span{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:var(--surface);color:var(--accent)}.video-fit{font-size:14px;color:var(--muted)}.video-fit strong{font-weight:400;color:var(--ink)}.video .badge{border-radius:8px;font-size:11px}.video h2{font-size:21px}.video .btn{margin-top:18px}.hint{line-height:1.8}
@keyframes card-reveal{from{transform:rotateY(-7deg);opacity:.75}to{transform:rotateY(0);opacity:1}}@keyframes feedback-in{from{transform:translateY(5px);opacity:.5}to{transform:translateY(0);opacity:1}}
@media(max-width:700px){:root{--base:18px}.home-grid{gap:0}.welcome h1{font-size:36px}.welcome .intro{font-size:16px}.care-art{margin-top:20px;gap:10px}.care-art .illustration{width:38px;height:38px;padding:7px}.care-art>span{display:none}.setup h2{font-size:23px}.question h2{font-size:1.15em;line-height:1.8}.option{padding:15px 12px;line-height:1.85}.calm-explain{padding-top:24px}.feedback-heading h3{font-size:21px}.feedback-heading .hint{font-size:12px}.feedback-symbol{width:34px;height:34px}.reason-block,.answer-block,.takeaway{padding:18px 17px;margin:13px 0}.calm-explain p{font-size:18px;line-height:1.85}.section-head{align-items:flex-start;flex-wrap:wrap}.section-head h1{font-size:31px}.section-head>.illustration{display:none}.section-head>.btn{font-size:13px;padding:10px 15px}.flash-filters{grid-template-columns:1fr;gap:14px;margin:24px 0}.flash-stage{margin:24px 0}.flash-card{min-height:340px;padding:28px 20px;border-radius:23px;gap:12px}.flash-card strong{font-size:29px}.flash-card .definition{font-size:19px;line-height:1.85}.flash-card .memory-tip{font-size:14px}.flash-controls{flex-wrap:wrap;gap:8px}.flash-controls .btn{font-size:12px;padding:11px 12px;flex:1;white-space:nowrap}.game-invite{padding:22px 18px;gap:14px}.game-invite h3{font-size:20px}.game-invite p{font-size:12px}.game-invite .illustration{width:40px;height:40px}.game-invite>span{display:none}.game-intro{padding:30px 20px}.game-intro h1{font-size:32px}.game-intro .actions{flex-direction:column}.game-intro p{font-size:16px}.game-question{padding:20px 0 26px}.game-question h2{font-size:22px}.game-question>.illustration{width:55px;height:55px}.game-answers{grid-template-columns:1fr;gap:12px}.game-option{min-height:75px;padding:16px 18px;font-size:18px}.game-feedback{padding:22px 18px}.game-wrap .exam-head{gap:8px;flex-wrap:wrap}.game-wrap .timer{font-size:13px}.result-hero{padding:28px 20px}.result-hero h2{font-size:21px}.result-hero strong{font-size:66px}.result .card{padding:24px 20px}.metric-strip{gap:7px}.metric-strip span{font-size:11px}.metric-strip strong{font-size:26px}.coach-grid{grid-template-columns:1fr;gap:14px}.coach-panel{padding:23px}.review-list .section-head{gap:12px}.review-list .section-head h2{font-size:22px}.compact-label{width:100%}.review-question summary{font-size:17px;gap:9px}.review-question .calm-explain{padding:16px 12px}.review-question .calm-explain p{font-size:17px}.mode-tabs{gap:8px}.mode-tabs button{font-size:12px;padding:11px 13px}.history-item{gap:12px}.history-item strong{font-size:15px}.history-item p{font-size:11px}.video h2{font-size:23px}.video-cover{padding:20px}.video-grid{gap:20px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}


html[data-size=large] .flash-card .definition{font-size:23px}html[data-size=large] .flash-card .memory-tip{font-size:18px}html[data-size=large] .calm-explain p{font-size:20px}html[data-size=large] .game-option{font-size:22px}html[data-size=large] .game-question h2{font-size:27px}


.game-option:disabled{opacity:1}.game-option:disabled:not(.is-correct):not(.is-wrong){color:var(--muted)}