@charset "UTF-8";
:root{color-scheme:light;--bg:#f5f6fa;--text:#202532;--muted:#747e90;--card:rgba(255,255,255,.8);--glass:rgba(255,255,255,.64);--line:rgba(85,103,137,.12);--highlight:rgba(255,255,255,.95);--accent:#376fe8;--accent-light:#e9efff;--green:#187d69;--green-bg:#e6f6ef;--red:#c04458;--red-bg:#ffedf0;--shadow:0 14px 45px rgba(44,62,98,.055);--aura1:#dce7ff;--aura2:#e8e0f6;--aura3:#dcefe9;--font:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","Noto Sans Thai","Thonburi",sans-serif}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]){color-scheme:dark;--bg:#101217;--text:#eef1fa;--muted:#99a3b7;--card:rgba(31,35,45,.82);--glass:rgba(39,43,55,.66);--line:rgba(194,207,241,.12);--highlight:rgba(255,255,255,.14);--accent:#8bb1ff;--accent-light:#26354f;--green:#7bd6b6;--green-bg:#1c3b32;--red:#ff9bac;--red-bg:#432b34;--shadow:0 14px 45px rgba(0,0,0,.13);--aura1:#17294a;--aura2:#28213c;--aura3:#16352e}}
:root[data-theme="dark"]{color-scheme:dark;--bg:#101217;--text:#eef1fa;--muted:#99a3b7;--card:rgba(31,35,45,.82);--glass:rgba(39,43,55,.66);--line:rgba(194,207,241,.12);--highlight:rgba(255,255,255,.14);--accent:#8bb1ff;--accent-light:#26354f;--green:#7bd6b6;--green-bg:#1c3b32;--red:#ff9bac;--red-bg:#432b34;--shadow:0 14px 45px rgba(0,0,0,.13);--aura1:#17294a;--aura2:#28213c;--aura3:#16352e}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:15px;-webkit-font-smoothing:antialiased;line-height:1.65;transition:background .3s,color .3s}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}button:disabled{cursor:default}a{color:var(--accent);text-decoration:none}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--accent);outline-offset:4px}button{touch-action:manipulation}button:active:not(:disabled){transform:scale(.97)}[hidden]{display:none!important}svg{width:22px;height:22px;flex-shrink:0;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}h1,h2,h3,p{margin:0}h1{font-size:38px;letter-spacing:-1.8px;font-weight:720;line-height:1.25}h2{font-size:21px;letter-spacing:-.5px;font-weight:650}h3{font-size:17px;font-weight:620}small,.caption{font-size:12px;color:var(--muted)}.muted{color:var(--muted)}.thai{font-family:"Thonburi","Noto Sans Thai",var(--font);line-height:1.5}.ambient{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}.ambient i{position:absolute;filter:blur(70px);border-radius:50%;opacity:.75}.ambient i:nth-child(1){background:var(--aura1);width:670px;height:590px;right:-130px;top:-130px}.ambient i:nth-child(2){background:var(--aura2);width:500px;height:450px;left:-200px;top:250px}.ambient i:nth-child(3){background:var(--aura3);width:600px;height:460px;right:20%;bottom:-320px}.glass{background:var(--glass);backdrop-filter:blur(28px) saturate(160%);-webkit-backdrop-filter:blur(28px) saturate(160%);border:1px solid var(--highlight);box-shadow:0 6px 24px rgba(35,49,80,.05),inset 0 0 0 1px var(--line)}.topbar{position:relative;z-index:20;max-width:1120px;min-height:70px;margin:22px auto 0;padding:12px 20px;border-radius:25px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:12px;color:var(--text);font-weight:650;font-size:16px;letter-spacing:-.4px}.brand-icon{width:41px;height:41px;display:grid;place-content:center;background:linear-gradient(145deg,#a9cbff,#6a8fea);border-radius:13px;color:#fff;font-size:32px;line-height:1}.brand-dot{margin:0 7px;color:var(--muted)}.top-actions{display:flex;align-items:center;gap:18px}.local-label{font-size:12px;color:var(--muted)}.icon-button{border:0;background:var(--card);border-radius:50%;width:42px;height:42px;display:grid;place-items:center;transition:transform .2s}.appearance-menu{position:absolute;right:10px;top:78px;padding:8px;border-radius:20px;min-width:180px}.appearance-menu button{display:flex;align-items:center;gap:12px;border:0;background:transparent;border-radius:13px;padding:11px 13px;width:100%;text-align:left;font-size:14px}.appearance-menu button.selected{background:var(--accent-light);color:var(--accent)}main{max-width:1020px;margin:0 auto;padding:46px 28px 140px;min-height:calc(100svh - 95px)}.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:30px}.eyebrow{font-size:11px;font-weight:650;letter-spacing:2.8px;color:var(--accent);margin-bottom:12px}.subtitle{color:var(--muted);margin-top:12px;font-size:14px}.date-pill{border:1px solid var(--line);border-radius:30px;padding:7px 13px;font-size:12px;color:var(--muted);white-space:nowrap}.card{background:var(--card);border:1px solid var(--highlight);border-radius:28px;box-shadow:var(--shadow);padding:27px}.hero{display:grid;grid-template-columns:1.2fr 1fr;align-items:center;min-height:255px;overflow:hidden;position:relative;padding:32px}.hero h2{font-size:28px;line-height:1.45;letter-spacing:-1px}.hero p{font-size:14px;color:var(--muted);margin:12px 0 22px}.hero-art{display:flex;align-items:center;justify-content:center;position:relative;height:210px}.orbit{position:absolute;width:240px;height:190px;border:1px solid var(--line);border-radius:50%;transform:rotate(-22deg)}.orbit.two{width:190px;height:240px;transform:rotate(35deg)}.glyph-tile{position:absolute;display:grid;place-content:center;width:102px;height:112px;font-size:72px;border-radius:27px;color:var(--accent);background:var(--glass);border:1px solid var(--highlight);backdrop-filter:blur(14px);box-shadow:0 15px 40px rgba(65,92,164,.1);transform:rotate(-10deg) translate(-63px,0)}.glyph-tile.second{color:var(--green);transform:rotate(13deg) translate(50px,10px);width:90px;height:100px;font-size:62px}.art-dot{position:absolute;width:9px;height:9px;background:#c2a4df;border-radius:50%;top:17px;right:29%}.art-dot.other{top:auto;bottom:12px;right:auto;left:22%;width:6px;height:6px;background:#8bbaef}.primary,.secondary,.text-button{border:0;border-radius:16px;padding:13px 20px;display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;font-size:14px;font-weight:600;transition:transform .15s,background .15s}.primary{background:#4279ee;color:#fff;box-shadow:0 6px 15px #4279ee25}.secondary{background:var(--accent-light);color:var(--accent)}.text-button{background:transparent;color:var(--accent);padding:8px 0}.primary svg,.secondary svg{width:18px;height:18px}.section-head{display:flex;align-items:center;justify-content:space-between;margin:30px 2px 15px;gap:12px}.section-head small{font-size:12px}.two-cols{display:grid;grid-template-columns:1fr 1fr;gap:18px}.test-card{padding:25px;position:relative;overflow:hidden}.test-card .test-icon{width:47px;height:47px;border-radius:15px;display:grid;place-content:center;background:var(--accent-light);color:var(--accent);margin-bottom:20px}.test-card:nth-child(2) .test-icon{background:var(--green-bg);color:var(--green)}.test-number{font-size:11px;letter-spacing:1.5px;color:var(--muted);font-weight:600}.test-card h3{font-size:21px;margin:4px 0 8px}.test-card p{color:var(--muted);font-size:13px;max-width:295px}.card-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:25px}.tag{display:inline-flex;align-items:center;gap:5px;border-radius:7px;font-size:11px;padding:3px 8px;background:var(--accent-light);color:var(--accent)}.tag.high{background:var(--green-bg);color:var(--green)}.tag.low{background:color-mix(in srgb,#b394d4 16%,transparent);color:color-mix(in srgb,#a477cd 88%,var(--text))}.round-arrow{display:grid;place-items:center;width:37px;height:37px;border:1px solid var(--line);border-radius:50%;background:transparent}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}.stat{padding:19px 23px;border:1px solid var(--line);border-radius:20px;background:var(--glass)}.stat strong{display:block;font-size:27px;line-height:1.3;font-weight:650;letter-spacing:-1px}.stat span{font-size:11px;color:var(--muted)}.soft-note{font-size:12px;color:var(--muted);margin-top:17px;display:flex;gap:7px;align-items:center}.soft-note svg{width:15px;height:15px}.bottom-nav{position:fixed;bottom:max(22px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);z-index:30;display:flex;padding:7px;border-radius:29px;gap:5px;width:min(420px,calc(100% - 38px))}.nav-item{display:flex;flex:1;align-items:center;justify-content:center;flex-direction:column;gap:3px;font-size:10px;color:var(--muted);border-radius:22px;min-height:57px;transition:background .2s,color .2s}.nav-item.active{background:var(--card);color:var(--accent);box-shadow:inset 0 1px 2px var(--highlight),0 2px 8px rgba(35,50,80,.05)}.nav-item svg{width:22px;height:22px}.setup{max-width:700px;margin:auto}.setup-card{margin:24px 0}.field-label{font-size:13px;font-weight:600;margin:24px 0 10px;display:block}.field-label:first-child{margin-top:0}.segmented{display:flex;background:var(--bg);border:1px solid var(--line);padding:4px;border-radius:14px;gap:4px;flex-wrap:wrap}.segmented button{flex:1;border:0;border-radius:10px;background:transparent;color:var(--muted);padding:10px 12px;min-height:43px;font-size:13px;white-space:nowrap}.segmented button.selected{background:var(--card);color:var(--text);box-shadow:0 2px 6px rgba(30,40,60,.07)}.toggle-row{display:flex;justify-content:space-between;align-items:center;font-size:13px;padding:15px 0;gap:15px}.toggle-row input{width:38px;height:22px;accent-color:var(--accent)}.wide{width:100%}.back{display:inline-flex;align-items:center;gap:5px;background:transparent;border:0;padding:0;color:var(--muted);font-size:13px;margin-bottom:22px;min-height:36px}.back svg{width:17px;height:17px}.quiz{max-width:700px;margin:auto}.quiz-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;font-size:12px;color:var(--muted)}.progress-track{height:5px;background:var(--line);border-radius:8px;overflow:hidden;margin-bottom:24px}.progress-track div{height:100%;background:var(--accent);border-radius:8px;transition:width .3s}.question-card{text-align:center;padding:27px 28px 30px;position:relative}.question-label{font-size:13px;color:var(--muted)}.quiz-glyph{font-size:112px;font-weight:400;line-height:1.8;margin:8px 0 0;min-height:180px;display:flex;align-items:center;justify-content:center;letter-spacing:0}.quiz-glyph.word{font-size:85px}.sound-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line);border-radius:30px;background:var(--glass);padding:9px 17px;color:var(--accent);font-size:13px;min-height:43px}.sound-button svg{width:18px;height:18px}.sound-button.playing{background:var(--accent-light)}.sound-button.slow{padding:9px 12px;color:var(--muted)}.audio-actions{display:flex;justify-content:center;gap:9px;margin:5px 0 14px}.hint-button{display:block;margin:12px auto 0;color:var(--muted);background:transparent;border:0;font-size:12px;padding:8px}.hint{font-size:12px;margin-top:14px;color:var(--muted);line-height:2.1}.answer-options{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:20px}.answer-options.tones{grid-template-columns:repeat(5,1fr)}.answer{min-height:80px;border:1px solid var(--line);border-radius:19px;background:var(--card);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:16px;transition:border .15s,background .15s}.answer .option-index{font-size:10px;color:var(--muted)}.answer svg{width:42px;height:24px;stroke-width:2.5;color:var(--muted)}.answer:not(:disabled):hover{border-color:var(--accent);background:var(--accent-light)}.answer.correct{border-color:var(--green);background:var(--green-bg);color:var(--green)}.answer.wrong{border-color:var(--red);background:var(--red-bg);color:var(--red)}.explanation{margin-top:18px;padding:22px;border-radius:22px;background:var(--card);border:1px solid var(--line)}.result-label{display:flex;align-items:center;gap:8px;color:var(--green);font-size:16px;font-weight:600}.result-label.error{color:var(--red)}.explanation p{font-size:13px;color:var(--muted);margin:10px 0}.reason-steps{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:12px;margin-top:14px}.reason-steps span{background:var(--bg);padding:6px 9px;border-radius:9px}.reason-steps b{color:var(--accent);padding:6px}.quiz-footer{margin-top:20px;display:flex;align-items:center;gap:14px;justify-content:space-between}.quiz-footer .caption{font-size:11px}.star-button{position:absolute;right:18px;top:17px;background:transparent;border:0;color:var(--muted);padding:8px;min-width:40px;min-height:40px}.star-button.saved{color:#bf8c25}.star-button.saved svg{fill:#dbb24e33}.result-card{text-align:center;padding:36px}.result-ring{width:130px;height:130px;border:7px solid var(--accent-light);border-top-color:var(--accent);border-right-color:var(--accent);border-radius:50%;margin:10px auto 22px;display:grid;place-content:center;font-size:34px;font-weight:650}.result-card h2{font-size:27px}.result-card>p{font-size:14px;color:var(--muted);margin:10px 0 25px}.result-list{margin:23px 0;text-align:left}.result-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:13px 0;border-bottom:1px solid var(--line);font-size:12px}.result-row .thai{font-size:25px;min-width:70px}.toolbar{display:flex;gap:10px;margin-bottom:18px;align-items:center;flex-wrap:wrap}.search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:15px;background:var(--glass);padding:10px 13px;flex:1;min-width:180px}.search svg{width:18px;height:18px;color:var(--muted)}.search input{background:transparent;border:0;color:var(--text);outline:0!important;width:100%;font-size:14px;min-height:26px}.filter-tabs{margin-bottom:20px}.letters-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:12px}.letter-tile{background:var(--card);border:1px solid var(--highlight);box-shadow:var(--shadow);border-radius:21px;padding:12px 6px 14px;text-align:center;position:relative}.letter-tile .thai{font-size:42px;line-height:1.5;display:block}.letter-tile small{display:block;font-size:10px;margin-bottom:5px}.letter-tile .mini-dot{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--accent);position:absolute;right:12px;top:13px}.library-tabs{max-width:400px;margin-bottom:25px}.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:15px 0}table{border-collapse:collapse;width:100%;font-size:12px;white-space:nowrap;text-align:left}th,td{padding:12px 10px;border-bottom:1px solid var(--line)}th{font-weight:600;background:var(--accent-light);color:var(--accent)}.quick-rules{padding:25px}.quick-rules p{font-size:13px;color:var(--muted);margin-top:12px}.rule-accordion{background:var(--card);border-radius:20px;margin-bottom:10px;border:1px solid var(--line);overflow:hidden}.rule-accordion summary{cursor:pointer;padding:18px 21px;font-size:14px;font-weight:600;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:12px}.rule-accordion summary::after{content:'＋';font-size:19px;color:var(--muted)}.rule-accordion[open] summary::after{content:'−'}.rule-content{padding:0 22px 22px;font-size:13px;line-height:1.9}.rule-content h2{display:none}.rule-content h3{font-size:16px;margin:20px 0 8px}.rule-content h4{font-size:14px;margin:16px 0 8px}.rule-content p{margin:10px 0;color:var(--muted)}.rule-content li{margin:7px 0;color:var(--muted)}.rule-content strong{color:var(--text);font-weight:600}.rule-content td{white-space:normal;min-width:90px}.rule-content td:first-child{min-width:45px}.reference-note{font-size:12px;color:var(--muted);margin:18px 2px}.empty{text-align:center;padding:50px 25px}.empty svg{width:35px;height:35px;color:var(--muted);margin-bottom:15px}.empty h3{font-size:18px}.empty p{font-size:13px;color:var(--muted);margin:9px 0 20px}.notebook-list{display:grid;gap:12px;margin-top:20px}.notebook-item{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 22px}.notebook-item .thai{font-size:34px;min-width:70px}.notebook-item .meta{flex:1}.notebook-item h3{font-size:14px}.notebook-item p{font-size:12px;color:var(--muted);margin-top:4px}.inline-actions{display:flex;align-items:center;gap:8px}.inline-actions .icon-button{background:var(--bg);width:38px;height:38px}.inline-actions svg{width:17px;height:17px}.settings-box{margin-top:25px}.settings-box p{font-size:12px;color:var(--muted);margin:9px 0}.backup-actions{display:flex;gap:10px;flex-wrap:wrap}.backup-actions button,.backup-actions label{font-size:12px;min-height:42px;cursor:pointer}.notes-area{width:100%;background:var(--bg);border:1px solid var(--line);border-radius:14px;color:var(--text);padding:12px;margin-top:12px;font:inherit;font-size:13px;resize:vertical;min-height:95px}.saved-note{font-size:11px;color:var(--green);min-height:20px}dialog{max-width:440px;width:calc(100% - 36px);background:var(--card);backdrop-filter:blur(35px);-webkit-backdrop-filter:blur(35px);border:1px solid var(--highlight);border-radius:32px;color:var(--text);padding:28px;box-shadow:0 30px 100px rgba(0,0,0,.2)}dialog::backdrop{background:rgba(15,24,43,.25);backdrop-filter:blur(6px)}.dialog-top{display:flex;justify-content:space-between;align-items:center}.dialog-glyph{font-size:115px;text-align:center;line-height:1.6}.dialog-title{text-align:center;font-size:20px}.dialog-meta{text-align:center;color:var(--muted);font-size:13px;margin:6px 0 20px}.detail-grid{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:17px;overflow:hidden;margin-bottom:20px}.detail-grid>div{padding:15px;text-align:center}.detail-grid>div+div{border-left:1px solid var(--line)}.detail-grid strong{display:block;font-size:16px;font-weight:500}.detail-grid small{font-size:11px}#toast{position:fixed;left:50%;transform:translate(-50%,20px);bottom:110px;z-index:100;background:var(--text);color:var(--bg);font-size:13px;max-width:calc(100% - 32px);padding:12px 20px;border-radius:17px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;text-align:center}#toast.visible{opacity:1;transform:translate(-50%,0)}.keyboard-hint{font-size:11px;color:var(--muted);margin-top:17px;text-align:center}.flow-curve{width:65px;height:34px;color:var(--accent)}.page-enter{animation:appear .35s ease both}@keyframes appear{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@media(min-width:1100px){.bottom-nav{bottom:24px}.home-top{display:grid;grid-template-columns:1fr 250px;gap:18px}.home-top .stats{grid-template-columns:1fr;margin-top:0;gap:10px}.home-top .stat{display:flex;align-items:center;gap:16px}.home-top .stat strong{font-size:28px;min-width:70px}.home-top .stat span{font-size:12px}.hero{min-height:280px}.hero-art{height:170px}.orbit{width:190px;height:160px}.orbit.two{width:140px;height:200px}.glyph-tile{width:86px;height:94px;font-size:62px;transform:rotate(-10deg) translate(-43px,0)}.glyph-tile.second{width:76px;height:86px;font-size:57px;transform:rotate(13deg) translate(35px,10px)}}
@media(max-width:750px){.topbar{margin:12px 18px 0;padding:10px 12px;min-height:62px;border-radius:22px}.brand{font-size:14px;gap:9px}.brand-icon{width:35px;height:35px;border-radius:11px;font-size:28px}.brand-dot{margin:0 5px}.local-label{display:none}main{padding:34px 20px 125px}.page-head{margin-bottom:24px}h1{font-size:31px;letter-spacing:-1px}.subtitle{font-size:13px;margin-top:9px}.date-pill{font-size:10px;padding:5px 10px}.hero{padding:26px;grid-template-columns:1.4fr 1fr;min-height:235px}.hero h2{font-size:25px}.hero p{font-size:12px;max-width:220px}.hero-art{height:160px;transform:scale(.8);transform-origin:center}.orbit{width:180px;height:180px}.orbit.two{width:150px;height:210px}.glyph-tile{transform:rotate(-10deg) translate(-35px,0);width:88px;height:96px;font-size:66px}.glyph-tile.second{transform:rotate(13deg) translate(44px,7px);width:78px;height:88px;font-size:56px}.card{border-radius:25px}.test-card{padding:21px}.test-card h3{font-size:19px}.test-card p{font-size:12px}.card-bottom{margin-top:20px}.stat{padding:17px}.stat strong{font-size:24px}.letters-grid{grid-template-columns:repeat(6,1fr);gap:9px}.letter-tile{border-radius:17px}.letter-tile .thai{font-size:38px}.question-card{padding:24px 20px}.answer-options.tones{gap:7px}.answer{font-size:14px;border-radius:16px}.answer svg{width:34px}.quick-rules{padding:20px}.quiz-glyph.word{font-size:78px}.notebook-item{padding:16px}.notebook-item .thai{min-width:55px;font-size:30px}}
@media(max-width:440px){main{padding-left:18px;padding-right:18px}.page-head .date-pill{display:none}.hero{grid-template-columns:1.55fr 1fr;padding:23px;min-height:224px}.hero h2{font-size:24px}.hero-art{transform:scale(.72)}.hero .primary{font-size:12px;min-height:43px;padding:10px 14px}.hero p{font-size:12px;line-height:1.8;margin:10px 0 17px}.two-cols{gap:12px}.test-card{padding:20px 17px}.test-card h3{font-size:18px}.test-card .test-icon{width:42px;height:42px;margin-bottom:17px}.test-card p{font-size:11px;line-height:1.85}.card-bottom .tag{font-size:10px;padding:2px 5px}.round-arrow{width:31px;height:31px}.round-arrow svg{width:17px}.stats{gap:8px}.stat{padding:16px 14px}.stat strong{font-size:24px}.stat span{font-size:10px}.section-head h2{font-size:19px}.section-head small{font-size:10px}.letters-grid{grid-template-columns:repeat(4,1fr)}.letter-tile .thai{font-size:42px}.question-card{padding:24px 14px}.answer-options.tones{grid-template-columns:repeat(3,1fr)}.answer-options.tones .answer{min-height:75px}.answer-options.tones .answer:nth-child(4){grid-column:1/2}.quiz-glyph{font-size:108px;min-height:168px}.quiz-glyph.word{font-size:76px}.quiz-footer .caption{max-width:170px}.segmented button{padding:9px;font-size:12px}.setup-card{padding:22px}.notebook-item{gap:10px}.inline-actions{gap:4px}.rule-content{padding:0 16px 18px}.bottom-nav{bottom:max(16px,env(safe-area-inset-bottom));width:calc(100% - 36px)}}
.round-arrow{position:relative}.round-arrow::after{content:"";position:absolute;inset:-7px}
.rank-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px}.rank-option{display:flex;flex-direction:column;align-items:flex-start;gap:9px;min-height:115px;padding:14px 12px;border-radius:19px;border:1px solid var(--line);background:var(--glass);text-align:left;transition:background .2s,border-color .2s}.rank-option.selected{background:var(--accent-light);border-color:var(--accent);color:var(--accent)}.rank-option:disabled{opacity:.5}.rank-top{display:flex;align-items:center;justify-content:space-between;width:100%;font-size:11px;gap:5px}.rank-top svg{width:14px;height:14px}.rank-option strong{font-size:21px;letter-spacing:-.5px;font-weight:650;white-space:nowrap}.rank-option small{font-size:10px}.quiz-level{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:-5px 2px 18px;font-size:12px;color:var(--muted)}.question-timer{display:flex;align-items:center;gap:10px;color:var(--accent);min-width:150px}.question-timer>span{font-size:17px;font-weight:650;font-variant-numeric:tabular-nums;min-width:58px;text-align:right}.time-track{height:5px;width:80px;border-radius:6px;overflow:hidden;background:var(--line)}.time-track>div{height:100%;width:100%;background:currentColor;transition:width .1s linear}.question-timer.urgent{color:var(--red)}.challenge-result{display:flex;align-items:center;justify-content:center;gap:10px;background:var(--bg);border-radius:16px;padding:15px;font-size:13px;margin:18px 0;color:var(--muted)}.challenge-result.passed{background:var(--green-bg);color:var(--green)}.challenge-result svg{width:18px;height:18px}.next-rank{margin-bottom:12px}.result-card>.wide{margin-top:2px}.test-number{letter-spacing:.7px}
@media(max-width:440px){.rank-grid{gap:7px}.rank-option{padding:11px 9px;min-height:104px;border-radius:15px}.rank-option strong{font-size:18px}.rank-option small{font-size:9px}.rank-top{font-size:10px}.rank-top svg{width:12px;height:12px}.question-timer{min-width:133px}.time-track{width:65px}.test-number{font-size:10px;letter-spacing:.2px}}
/* Each route occupies one viewport; long collections use explicit pages. */
html,body{height:100%;overflow:hidden;overscroll-behavior:none}body{height:100dvh;display:flex;flex-direction:column}.topbar{width:calc(100% - 44px);flex:none}main{width:100%;height:0;min-height:0;flex:1;padding:24px 28px 112px;overflow:hidden}.screen{height:100%;min-height:0;display:flex;flex-direction:column;gap:0}.screen>.page-head{flex:none}.page-head{margin-bottom:18px}h1{font-size:31px}.eyebrow{margin-bottom:7px}.subtitle{margin-top:7px;font-size:13px}.setup,.quiz{width:100%;height:100%;min-height:0;display:flex;flex-direction:column;max-width:700px;margin:0 auto}.back{flex:none;margin-bottom:8px;min-height:26px;line-height:1.4}.setup .page-head{margin-bottom:14px}.setup .page-head h1{font-size:28px}.setup .subtitle{font-size:12px}.setup-card{margin:0;padding:20px 22px;min-height:0}.field-label{margin:15px 0 8px;font-size:12px}.count-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:15px;margin-bottom:8px}.count-heading .field-label{margin:0}.count-heading small{font-size:10px}.rank-option{min-height:95px;gap:7px}.rank-grid+.reference-note{font-size:10px;line-height:1.6;margin:10px 0}.segmented button{padding:7px 10px;min-height:36px;font-size:12px}.segmented button:disabled{opacity:.42}.segmented button.selected:disabled{opacity:1}.toggle-row{padding:11px 0;font-size:12px}.primary,.secondary{min-height:43px;padding:11px 17px}.range-options button{padding-left:7px;padding-right:7px}.quiz-top{flex:none;margin:0 2px 8px}.progress-track{flex:none;margin-bottom:14px}.quiz-level{flex:none;margin:0 2px 12px}.question-card{min-height:0;flex:1;display:flex;flex-direction:column;justify-content:center;padding:15px 20px}.quiz-glyph{flex:1;min-height:0;font-size:clamp(65px,11vh,112px);line-height:1.45;margin:3px 0}.quiz-glyph.word{font-size:clamp(53px,9vh,88px)}.question-label{font-size:12px}.audio-actions{flex:none;margin:5px 0 8px}.question-card .caption{font-size:11px}.hint-button{margin:0 auto;font-size:11px;padding:4px}.hint{margin-top:5px;font-size:11px}.answer-options{flex:none;margin-top:14px;gap:9px}.answer-options.tones{grid-template-columns:repeat(5,minmax(0,1fr));gap:7px}.answer-options.tones .answer:nth-child(4){grid-column:auto}.answer{min-height:72px;font-size:14px;padding:5px}.answer .option-index{font-size:9px}.answer svg{height:22px;width:34px}.keyboard-hint{flex:none;margin-top:10px;font-size:10px}.has-answer .question-card{flex:0 0 auto;min-height:92px;padding:10px 15px;display:grid;grid-template-columns:1fr 1.1fr;align-items:center}.has-answer .question-label,.has-answer .question-card>.caption,.has-answer .hint-button,.has-answer .hint{display:none}.has-answer .quiz-glyph{font-size:47px!important;min-height:65px;margin:0;grid-column:1;grid-row:1}.has-answer .audio-actions{flex-wrap:wrap;grid-column:2;grid-row:1;margin:0;gap:5px}.has-answer .sound-button{padding:7px 10px;font-size:11px;min-height:34px}.has-answer .star-button{top:4px;right:5px;width:30px;min-width:30px;min-height:30px;padding:4px}.has-answer .star-button svg{width:17px;height:17px}.explanation{flex:1;min-height:0;padding:16px 18px;margin-top:12px;animation:feedback-in .32s ease both;display:flex;flex-direction:column;justify-content:center}.result-label{font-size:14px}.explanation p{font-size:12px;line-height:1.75;margin:7px 0}.reason-steps{font-size:11px;gap:5px;margin-top:9px}.reason-steps span,.reason-steps b{padding:4px 7px}.quiz-footer{flex:none;margin-top:12px}.quiz-footer .caption{font-size:10px}.quiz-footer .primary{min-height:42px}.screen-quiz .quiz:has(.result-card){max-width:700px}.result-card{padding:22px;min-height:0;height:100%;display:flex;flex-direction:column;align-items:stretch}.result-ring{flex:none;width:88px;height:88px;border-width:5px;margin:5px auto 10px;font-size:26px}.result-card h2{font-size:23px}.result-card>p{font-size:12px;line-height:1.7;margin:8px 0 12px}.result-card>.eyebrow{font-size:10px;margin:0}.result-list{margin:8px 0 0;flex:1;min-height:0}.result-row{padding:8px 0;min-height:45px}.result-row .thai{font-size:23px}.result-row .icon-button{width:32px;height:32px}.challenge-result{margin:4px 0 11px;font-size:12px;padding:10px}.next-rank{margin-bottom:8px}.result-card .text-button{min-height:30px;padding:5px 0;font-size:12px}.result-card .pager{padding:4px 0}.pager{display:flex;align-items:center;justify-content:center;gap:15px;flex:none;padding:13px 0 0;font-size:11px;color:var(--muted)}.pager .icon-button{width:34px;height:34px}.pager .icon-button:disabled{opacity:.28}.screen-learn .library-tabs,.screen-notebook .library-tabs{flex:none;margin-bottom:16px}.toolbar{flex:none;margin-bottom:12px}.filter-tabs{flex:none;margin-bottom:13px}.letters-grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:10px}.letter-tile{padding:7px 5px 10px;border-radius:17px}.letter-tile .thai{font-size:39px}.letter-tile small{font-size:9px;margin-bottom:3px}.letter-tile .tag{font-size:10px}.chapter-picker{display:flex;gap:12px;align-items:center;font-size:12px;color:var(--muted);margin:0 0 15px}.chapter-picker select{color:var(--text);background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px;width:0;flex:1;font-size:12px}.rule-reader{flex:1;min-height:0;padding:20px;display:flex;flex-direction:column;justify-content:center}.rule-reader .rule-content{padding:0;line-height:1.9;font-size:14px;min-height:0}.rule-reader .rule-content h3{margin-top:0}.rule-reader .rule-content p{font-size:13px;margin:8px 0}.rule-reader .rule-content .table-scroll{margin:10px 0}.rule-reader table{font-size:12px}.rule-reader td,.rule-reader th{padding:9px}.download-rules{margin-top:9px;text-align:center;font-size:10px}.notebook-list{min-height:0;flex:1;display:flex;flex-direction:column;justify-content:flex-start;margin-top:14px;gap:10px}.notebook-item{padding:14px 18px;flex:none;min-height:73px}.review-all{align-self:flex-start;font-size:12px}.notes-panel{flex:1;min-height:0;padding:22px;display:flex;flex-direction:column}.notes-panel .notes-area{flex:1;min-height:75px;margin-bottom:0;resize:none}.notes-panel .reference-note{font-size:11px;margin-bottom:0}.empty{padding:30px 20px}.compact-hero{min-height:0;height:150px;flex:none;padding:22px 27px;grid-template-columns:1.6fr 1fr}.compact-hero h2{font-size:24px}.compact-hero p{font-size:12px;margin:9px 0 0}.compact-hero .hero-art{height:110px;transform:scale(.7)}.compact-hero .eyebrow{font-size:10px;margin-bottom:7px}.screen-home .stats{display:grid;grid-template-columns:repeat(3,1fr);margin-top:12px;gap:10px}.screen-home .stat{padding:12px 18px;display:flex;align-items:center;gap:12px}.screen-home .stat strong{font-size:24px;min-width:35px}.screen-home .stat span{font-size:11px}.section-head{flex:none;margin:20px 2px 12px}.screen-home .two-cols,.screen-practice .two-cols{flex:1;min-height:0}.test-card{display:flex;flex-direction:column;min-height:0;padding:22px}.test-card .test-icon{margin-bottom:12px;flex:none}.test-card h3{margin-bottom:7px}.test-card .card-bottom{margin-top:auto;padding-top:12px}.screen-home .soft-note{flex:none;margin-top:12px;font-size:11px}.screen-practice .settings-box{margin-top:16px;padding:18px}.screen-practice .two-cols{max-height:300px}.test-card p{font-size:12px}.page-enter{animation:screen-in .34s cubic-bezier(.2,.8,.2,1) both}.screen-quiz .question-card{animation:question-in .3s cubic-bezier(.2,.8,.2,1) both}.answer{transition:background .22s,border-color .22s,transform .18s}.answer.correct{animation:answer-pop .3s ease both}.nav-item{transition:background .25s,color .25s,box-shadow .25s}.rank-option{transition:background .25s,border-color .25s,transform .18s}
@keyframes screen-in{from{opacity:0;transform:translateX(10px)}to{opacity:1;transform:translateX(0)}}@keyframes question-in{from{opacity:.4;transform:scale(.985)}to{opacity:1;transform:scale(1)}}@keyframes feedback-in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes answer-pop{50%{transform:scale(1.025)}to{transform:scale(1)}}
.audio-locked{display:flex;justify-content:center;align-items:center;gap:6px;margin:6px 0}.audio-locked svg{width:13px;height:13px}.has-answer .audio-locked{display:none}.comparison{display:flex;align-items:center;justify-content:center;gap:7px;font-size:12px;color:var(--accent);margin:1px 0 10px;flex:none}.comparison svg{width:17px;height:17px}.history-card{flex:1;min-height:0;padding:27px;display:flex;flex-direction:column;max-width:850px;width:100%;margin:0 auto}.chart-heading{display:flex;justify-content:space-between;align-items:center;flex:none}.chart-heading strong{display:block;font-size:37px;letter-spacing:-1.4px;font-variant-numeric:tabular-nums;font-weight:650;line-height:1.4}.chart-heading strong small{font-size:14px;font-weight:400;letter-spacing:0}.chart-wrap{flex:1;min-height:100px;display:flex;align-items:center}.history-chart{width:100%;height:100%;max-height:300px;stroke-width:1;overflow:visible}.chart-grid{stroke:var(--line);stroke-dasharray:4 5}.chart-grid text,.chart-axis{fill:var(--muted);stroke:none;font-size:11px;font-family:var(--font)}.chart-line{stroke:var(--accent);stroke-width:2.5;fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:2000;animation:draw-line 1.1s ease both}.chart-area{fill:var(--accent-light);stroke:none;opacity:.6}.chart-point{fill:var(--bg);stroke:var(--accent);stroke-width:2}.chart-point.selected{fill:var(--accent);stroke:var(--card);stroke-width:3}.history-picker{display:flex;align-items:center;gap:12px;flex:none;font-size:12px;color:var(--muted);margin-top:10px}.history-picker select{flex:1;width:0;background:var(--bg);color:var(--text);border:1px solid var(--line);border-radius:12px;padding:10px;font:inherit}.history-detail{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:11px;color:var(--muted);margin-top:14px}.chart-note{text-align:center;font-size:11px;margin:12px 0 0}.history-empty{margin:auto 0}.history-empty p{font-size:12px}.chart-heading .tag{font-size:10px}.result-card .comparison{font-size:11px}.quiz .result-card .eyebrow{letter-spacing:1.2px}@keyframes draw-line{from{stroke-dashoffset:2000}to{stroke-dashoffset:0}}
.rule-reader .rule-content ul{margin:7px 0;padding-left:18px}.rule-reader .rule-content li{margin:5px 0;line-height:1.8}.rule-reader .rule-content h3{line-height:1.5}
.toggle-row input{appearance:none;-webkit-appearance:none;position:relative;display:block;flex:none;width:36px;height:22px;border:1px solid var(--line);border-radius:22px;background:var(--line);transition:background .2s;cursor:pointer}.toggle-row input::before{content:"";position:absolute;left:2px;top:2px;width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:0 1px 4px #0002;transition:transform .22s cubic-bezier(.2,.8,.2,1)}.toggle-row input:checked{background:#4279ee;border-color:#4279ee}.toggle-row input:checked::before{transform:translateX(14px)}.rank-option.selected{box-shadow:inset 0 1px 1px var(--highlight),0 0 0 3px color-mix(in srgb,var(--accent) 7%,transparent)}.rank-option:not(:disabled):hover{border-color:var(--accent)}.chart-area{fill:url(#history-wash);opacity:1}.chart-heading strong{color:var(--text)}.history-card{box-shadow:var(--shadow),inset 0 1px 0 var(--highlight)}.time-track{box-shadow:inset 0 1px 2px #00000008}.question-timer.urgent #time-left{animation:timer-alert 1s ease-in-out infinite}.comparison{font-variant-numeric:tabular-nums}.screen .empty>svg{padding:10px;border-radius:17px;box-sizing:content-box;background:var(--accent-light);color:var(--accent)}.card{box-shadow:var(--shadow),inset 0 1px 0 var(--highlight)}.rank-option:active:not(:disabled){transform:scale(.965)}.chapter-picker select,.history-picker select{transition:border-color .2s,box-shadow .2s}.chapter-picker select:focus,.history-picker select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}@keyframes timer-alert{50%{opacity:.55}}
.chart-grid text,.chart-axis{font-size:17px}.chart-line{stroke-width:3}.chart-grid text{font-variant-numeric:tabular-nums}
.test-card p{line-height:1.8}.test-card h3{line-height:1.5}.compact-hero h2{line-height:1.5}.compact-hero p{line-height:1.7}
.compact-hero .hero-art{height:80px}
/* The brand bar is replaced on every route by one floating appearance control. */
.appearance-dock{position:fixed;top:max(14px,env(safe-area-inset-top));right:max(18px,env(safe-area-inset-right));z-index:50}.appearance-dock>#appearance-button{width:40px;height:40px;background:var(--glass);border:1px solid var(--highlight);box-shadow:0 5px 20px #00000008,inset 0 1px 0 var(--highlight)}.appearance-dock .appearance-menu{top:49px;right:0;min-width:180px}.appearance-dock svg{width:19px;height:19px}main{padding-top:max(24px,env(safe-area-inset-top))}.page-head{padding-right:43px}.screen-quiz .back{align-self:flex-start;padding-right:42px;min-height:30px}.quiz-top{padding-right:3px}.quiz-level{align-items:flex-start}.quiz-level>span{max-width:60%;line-height:1.7}.question-timer{padding-top:1px}.stage-heading{display:flex;align-items:center;justify-content:space-between;gap:9px;margin:15px 0 8px;font-size:11px;font-weight:550}.stage-heading small{font-size:10px;font-weight:400;white-space:nowrap}.stage-path{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px}.stage-chip{border:1px solid var(--line);border-radius:13px;padding:6px 2px;min-height:45px;background:var(--bg);display:flex;flex-direction:column;justify-content:center;align-items:center;gap:3px;color:var(--muted);transition:background .2s,border-color .2s,transform .2s}.stage-chip>span{font-size:9px;line-height:12px;height:12px;display:flex;align-items:center;justify-content:center}.stage-chip svg{width:12px;height:12px}.stage-chip b{font-weight:500;font-size:10px;line-height:1.3}.stage-chip.selected{background:var(--accent-light);border-color:var(--accent);color:var(--accent)}.stage-chip.passed:not(.selected){color:var(--green)}.stage-chip:disabled{opacity:.4}.stage-chip:not(:disabled):hover{border-color:var(--accent)}.stage-chip:active:not(:disabled){transform:scale(.96)}.challenge-result span{line-height:1.65}.next-rank{line-height:1.55}.history-detail>span{min-width:0}.history-detail time{white-space:nowrap}.question-card .practice-label{font-size:10px;color:var(--muted)}
@media(max-height:760px){main{padding-top:max(18px,env(safe-area-inset-top))}.appearance-dock{top:max(12px,env(safe-area-inset-top))}.appearance-dock>#appearance-button{width:36px;height:36px}.stage-heading{font-size:10px;margin-top:10px;margin-bottom:6px}.stage-heading small{font-size:9px}.stage-chip{min-height:39px;padding:5px 2px;border-radius:11px}.stage-chip b{font-size:9px}.stage-chip span{font-size:8px}.page-head{padding-right:39px}.quiz-level>span{font-size:10px}.rank-grid+.reference-note{line-height:1.6}}
.stage-tools{display:flex;align-items:center;gap:5px;flex:none}.stage-help{display:grid;place-items:center;background:transparent;border:0;padding:2px;color:var(--muted);position:relative}.stage-help::after{content:"";position:absolute;inset:-7px}.stage-help svg{width:16px;height:16px}.practice-label{display:block;font-size:10px;font-weight:400;margin-top:3px;color:var(--muted)}.stage-help-title{font-size:23px;margin:20px 0 12px}.stage-help-content{font-size:13px;line-height:1.9;color:var(--muted)}.stage-help-content ul,.stage-help-content ol{padding-left:19px;margin:12px 0 0}.stage-help-content li{margin:10px 0}.stage-help-content p+p{margin-top:12px}
@media(max-width:750px){main{padding-left:max(18px,env(safe-area-inset-left));padding-right:max(18px,env(safe-area-inset-right));padding-bottom:calc(88px + max(16px,env(safe-area-inset-bottom)))}}
@media(max-height:760px){main{padding-bottom:calc(80px + max(16px,env(safe-area-inset-bottom)))}}
@media(max-height:760px){.result-row{padding:3px 0;min-height:34px}.result-list{margin-top:5px}.has-answer .question-card .audio-actions{gap:4px}}
@media(max-width:750px){.history-card{padding:20px}.chart-heading strong{font-size:32px}.history-picker{font-size:10px;gap:9px}.history-picker select{font-size:10px;padding:9px}.history-detail{font-size:10px;gap:8px}.chart-note{font-size:10px}.result-card .comparison{font-size:10px;margin-bottom:7px}.bottom-nav{gap:2px}.nav-item{font-size:10px}.history-chart{max-height:280px}}
@media(max-height:760px){.result-card .comparison{font-size:9px;margin:1px 0 5px}.comparison svg{width:13px;height:13px}.history-card{padding:17px}.chart-heading strong{font-size:28px}.history-detail{margin-top:10px}.chart-note{margin-top:9px;font-size:9px}.result-ring{width:52px;height:52px;font-size:18px}.result-card>.reference-note{font-size:10px;margin:5px 0}.result-card>.challenge-result{margin-bottom:7px}}
@media(max-width:750px){.topbar{width:calc(100% - 36px);margin:12px 18px 0;padding:9px 12px;min-height:59px}main{padding:20px 18px 103px}.page-head{margin-bottom:16px}h1{font-size:28px}.eyebrow{font-size:9px;margin-bottom:6px}.subtitle{font-size:12px}.setup-card{padding:17px 18px}.setup .page-head h1{font-size:26px}.setup .page-head{margin-bottom:12px}.setup .back{font-size:11px}.compact-hero{height:137px;padding:18px 21px;grid-template-columns:1.8fr 1fr}.compact-hero h2{font-size:20px}.compact-hero p{font-size:11px}.compact-hero .hero-art{transform:scale(.57)}.screen-home .stat{padding:11px 12px;display:block}.screen-home .stat strong{font-size:23px}.screen-home .stat span{font-size:10px}.test-card{padding:19px 16px}.test-card h3{font-size:18px}.test-card p{font-size:11px}.test-card .test-icon{width:37px;height:37px;border-radius:12px;margin-bottom:10px}.test-card .card-bottom{gap:6px}.test-card .tag{font-size:9px}.letters-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.letter-tile .thai{font-size:34px}.letter-tile{padding:5px 4px 8px;border-radius:15px}.letter-tile small{font-size:9px}.library-tabs{max-width:100%}.rule-reader{padding:17px}.rule-reader .rule-content{font-size:12px}.rule-reader .rule-content p{font-size:12px;line-height:1.85}.rule-reader td{font-size:11px}.has-answer .answer-options .answer{min-height:63px}.answer-options.tones .answer{font-size:12px;min-height:69px}.has-answer .quiz-top{font-size:11px}.screen-home .section-head{margin-top:17px}.screen-home .section-head h2{font-size:18px}.notebook-item{padding:12px 15px}.notebook-item .meta h3{font-size:12px}.notebook-item .meta p{font-size:10px}.notes-panel{padding:19px}.result-card{padding:18px}.result-ring{width:78px;height:78px;font-size:24px}.result-card h2{font-size:21px}.challenge-result{font-size:11px;padding:9px}.result-card .primary,.result-card .secondary{min-height:40px;font-size:12px}.quiz-footer .caption{max-width:165px}.explanation p{font-size:11px}.reason-steps{font-size:10px}}
@media(max-height:760px){main{padding-top:13px;padding-bottom:96px}.topbar{margin-top:9px;min-height:55px}.brand-icon{width:31px;height:31px;font-size:25px}.topbar .icon-button{width:35px;height:35px}.page-head{margin-bottom:12px}h1{font-size:25px}.eyebrow{font-size:8px;margin-bottom:4px}.subtitle{font-size:11px;margin-top:5px}.compact-hero{display:none}.screen-home .stats{margin-top:0}.test-card .test-icon{margin-bottom:9px}.screen-home .section-head{margin-top:16px}.setup .page-head h1{font-size:23px}.setup .page-head{margin-bottom:9px}.setup .subtitle{font-size:10px}.setup .back{margin-bottom:4px;min-height:22px}.setup-card{padding:13px 16px}.rank-option{min-height:75px;padding:8px;gap:4px;border-radius:13px}.rank-option strong{font-size:16px}.rank-option small{font-size:8px}.rank-top{font-size:9px}.rank-grid+.reference-note{margin:7px 0;font-size:9px}.field-label,.count-heading{margin-top:10px;margin-bottom:6px}.count-heading .field-label{margin:0}.segmented button{min-height:31px;padding:5px 8px;font-size:11px}.toggle-row{padding:8px 0;font-size:11px}.setup-card .primary{min-height:37px;font-size:12px}.rank-top svg{width:11px;height:11px}.quiz-top{font-size:10px;margin-bottom:6px}.progress-track{margin-bottom:10px}.quiz-level{margin-bottom:8px;font-size:10px}.question-timer>span{font-size:14px}.answer-options{margin-top:10px;gap:6px}.answer-options.tones .answer,.answer{min-height:59px}.answer-options.tones .answer{font-size:11px}.answer .option-index{font-size:8px}.answer svg{height:18px}.has-answer .question-card{min-height:75px;padding:5px 12px}.has-answer .quiz-glyph{font-size:37px!important;min-height:52px}.has-answer .sound-button{font-size:10px;min-height:29px;padding:5px 8px}.has-answer .sound-button svg{width:14px;height:14px}.explanation{padding:10px 13px;margin-top:9px}.result-label{font-size:12px}.result-label svg{width:17px;height:17px}.explanation p{font-size:10px;line-height:1.6;margin:5px 0}.reason-steps{font-size:9px;margin-top:6px;gap:4px}.reason-steps span,.reason-steps b{padding:3px 5px}.quiz-footer{margin-top:8px}.quiz-footer .primary{min-height:35px;font-size:11px;padding:8px 13px}.quiz-footer .caption{font-size:9px}.keyboard-hint{font-size:9px;margin-top:7px}.question-card .audio-actions{margin:4px 0}.sound-button{min-height:36px;padding:7px 12px;font-size:11px}.question-label{font-size:11px}.library-tabs{margin-bottom:10px!important}.toolbar{margin-bottom:9px}.filter-tabs{margin-bottom:10px}.search{padding:7px 11px}.letter-tile .thai{font-size:32px}.letter-tile small{font-size:8px}.letter-tile .tag{font-size:9px}.pager{padding-top:9px}.pager .icon-button{width:30px;height:30px}.chapter-picker{margin-bottom:10px}.rule-reader .rule-content p{font-size:11px}.rule-reader .rule-content h3{font-size:14px}.rule-reader td,.rule-reader th{padding:7px;font-size:10px}.rule-reader{padding:14px}.notes-panel .reference-note{font-size:10px}.result-card{padding:14px}.result-ring{width:60px;height:60px;font-size:20px;margin:4px auto 7px}.result-card h2{font-size:18px}.result-card>p{font-size:10px;margin:5px 0 8px}.result-card>.eyebrow{font-size:8px}.result-row{padding:5px 0;min-height:36px;font-size:10px}.result-row .thai{font-size:20px}.result-row .icon-button{width:28px;height:28px}.challenge-result{padding:7px;margin-bottom:8px;font-size:10px}.result-card .primary,.result-card .secondary{min-height:33px;padding:7px 12px;font-size:11px}.result-card .text-button{font-size:10px;min-height:24px}.notebook-item{min-height:65px}.notebook-list{margin-top:10px;gap:8px}.screen-practice .settings-box{padding:14px;margin-top:12px}.screen-practice .settings-box h3{font-size:14px}.screen-practice .settings-box p{font-size:11px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}@media(prefers-reduced-transparency:reduce){.glass,.card,dialog{backdrop-filter:none;-webkit-backdrop-filter:none;background:var(--bg);border-color:var(--line)}}
/* Shared selection surfaces are spring-driven, rather than recreated fills. */
main{position:relative;z-index:3}.motion-panel{display:flex;flex-direction:column;flex:1;min-height:0}.motion-selection{position:relative;isolation:isolate}.motion-selection>button,.motion-selection>a{position:relative;z-index:2}.selection-slider{position:absolute;left:0;top:0;z-index:1;pointer-events:none;border-radius:12px;background:var(--card);border:1px solid var(--highlight);box-shadow:inset 0 1px 1px var(--highlight),0 2px 8px #00000008;will-change:transform,width,height;transition:background-color .25s ease,border-color .25s ease}.selection-well{position:absolute;z-index:0;pointer-events:none;background:var(--glass)}.bottom-nav>.selection-slider{border-radius:22px}.bottom-nav.motion-selection>.nav-item.active{background:transparent;box-shadow:none}.segmented.motion-selection>button.selected{background:transparent;box-shadow:none}.appearance-menu>.selection-slider{background:var(--accent-light);border-color:transparent;border-radius:13px;box-shadow:none}.appearance-menu.motion-selection>button.selected{background:transparent}.rank-grid>.selection-slider{border-radius:19px;background:var(--accent-light);border-color:var(--accent);box-shadow:inset 0 1px 1px var(--highlight),0 0 0 3px color-mix(in srgb,var(--accent) 7%,transparent)}.rank-grid.motion-selection>.rank-option{background:transparent;box-shadow:none}.rank-grid.motion-selection>.rank-option.selected{background:transparent;border-color:transparent;box-shadow:none}.stage-path>.selection-slider{border-radius:13px;background:var(--accent-light);border-color:var(--accent);box-shadow:inset 0 1px 0 var(--highlight)}.stage-path.motion-selection>.stage-chip{background:transparent}.stage-path.motion-selection>.stage-chip.selected{background:transparent;border-color:transparent}.screen,.screen-quiz .question-card,.explanation{animation:none}.screen .history-chart .chart-line{animation-duration:.65s}[data-motion-ghost]{pointer-events:none!important;overflow:hidden;contain:paint}[data-motion-ghost] *{pointer-events:none!important;animation:none!important}.selection-slider,.selection-well{box-sizing:border-box}.motion-panel>.toolbar,.motion-panel>.filter-tabs,.motion-panel>.chapter-picker{flex:none}.motion-panel .pager{flex:none}.motion-panel .notes-panel{min-height:0}.rank-grid.motion-selection>.rank-option:active,.stage-path.motion-selection>.stage-chip:active,.segmented.motion-selection>button:active{transform:scale(.985)}
@media(max-width:750px){.rank-grid>.selection-slider{border-radius:15px}}
@media(max-height:760px){.rank-grid>.selection-slider{border-radius:13px}.stage-path>.selection-slider{border-radius:11px}}
@media(prefers-reduced-motion:reduce){.selection-slider{will-change:auto}}
.bottom-nav.motion-selection{position:fixed}.appearance-menu.motion-selection{position:absolute}
.motion-selection>button,.motion-selection>a{transition:color .22s ease,border-color .22s ease,transform .16s cubic-bezier(.2,.8,.2,1)}