@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Thai:wght@400;500;600;700&family=Noto+Serif+SC:wght@500;600;700&display=swap');
:root{font-family:Inter,"Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;color:#242b2a;background:#f8f6f1;font-synthesis:none}
*{box-sizing:border-box}body{margin:0;min-width:320px}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}a{color:inherit;text-decoration:none}svg{display:block}h1,h2,h3,p{margin-top:0}h1{font-size:30px;line-height:1.25;letter-spacing:-.04em}h2{font-size:21px;letter-spacing:-.025em}h3{font-size:17px}.thai{font-family:"Noto Sans Thai",Tahoma,sans-serif;line-height:1.65}.serif{font-family:"Noto Serif SC",serif}.muted{color:#78807d}.small{font-size:13px}.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#ad7a46;font-weight:700}.loading{min-height:100vh;display:grid;place-items:center;color:#78807d}
.shell{display:flex;min-height:100vh}.sidebar{width:244px;flex:none;border-right:1px solid #e8e6df;background:#fffefa;padding:29px 16px 24px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{display:flex;align-items:center;gap:11px;padding:0 10px 34px}.brand-mark{width:36px;height:36px;border-radius:12px;background:#146a69;color:#fff;display:grid;place-items:center;font-weight:800;font-size:19px}.brand-name{font-family:Georgia,serif;font-weight:700;font-size:21px;letter-spacing:-.04em}.brand-sub{font-size:11px;color:#a6a7a0;margin-top:1px}.nav{display:grid;gap:5px}.nav-link{display:flex;align-items:center;gap:13px;min-height:44px;padding:0 13px;border-radius:11px;color:#68716e;font-size:14px;transition:background .15s,color .15s}.nav-link:hover{background:#f5f4ef;color:#223c3b}.nav-link.active{background:#e9f2ef;color:#126764;font-weight:700}.nav-link svg{width:19px;height:19px;stroke-width:1.9}.side-note{margin-top:auto;padding:17px;border-radius:16px;background:#f5f3eb;color:#6c7772;font-size:12px;line-height:1.65}.side-note strong{display:block;color:#315b55;font-size:13px;margin-bottom:4px}.main{flex:1;min-width:0;padding:42px clamp(22px,4vw,66px) 70px}.content{max-width:1260px;margin:0 auto}.mobile-head,.mobile-nav{display:none}
.page-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:25px}.page-head p{margin:8px 0 0;color:#76817d;font-size:14px;line-height:1.6}.page-head .head-actions{display:flex;gap:10px;align-items:center}.count-pill{background:#edf2ee;border-radius:999px;padding:8px 13px;color:#276c64;font-size:13px;white-space:nowrap}.progress-track{height:8px;background:#dee9e4;border-radius:20px;overflow:hidden;flex:1}.progress-fill{height:100%;background:#1b7771;border-radius:20px;transition:width .25s}.progress-line{display:flex;gap:15px;align-items:center;min-width:min(330px,100%);font-size:13px;color:#68746f}.banner{background:#edf3ee;border:1px solid #dce9e3;border-radius:15px;padding:14px 18px;color:#496a60;font-size:13px;line-height:1.6;margin-bottom:24px;display:flex;justify-content:space-between;align-items:center;gap:16px}
.card{border:1px solid #e7e7e0;background:#fffefa;border-radius:20px;box-shadow:0 4px 16px rgba(34,47,40,.025)}.btn{border:1px solid transparent;border-radius:11px;padding:10px 16px;min-height:42px;display:inline-flex;align-items:center;justify-content:center;gap:8px;background:#146a69;color:#fff;font-weight:650;font-size:14px;transition:transform .15s,background .15s,border .15s}.btn:hover:not(:disabled){background:#0e5655;transform:translateY(-1px)}.btn.secondary{background:#fffefa;color:#2a4440;border-color:#dfe4dd}.btn.secondary:hover:not(:disabled){background:#f0f5f0}.btn.ghost{background:transparent;color:#5b6d67}.btn.ghost:hover:not(:disabled){background:#f0f3ef}.btn.danger{background:#fffefa;color:#ae5650;border-color:#ebccc6}.btn.success{background:#2f8267}.btn.large{min-height:51px;font-size:15px;padding:12px 22px}.btn.wide{width:100%}.btn.icon{width:42px;padding:0}.btn svg{width:18px;height:18px;stroke-width:2}.chip{background:#fffefa;border:1px solid #e0e5de;color:#67716c;border-radius:999px;padding:9px 14px;min-height:38px;font-size:13px;white-space:nowrap}.chip:hover,.chip.active{background:#e5f1ed;border-color:#b8d4ca;color:#17685e}.chips{display:flex;flex-wrap:wrap;gap:8px}.field{display:flex;flex-direction:column;gap:7px;font-size:13px;color:#62706b;font-weight:650}.input,.select{border:1px solid #dce2db;background:#fffefa;border-radius:10px;height:43px;padding:0 13px;color:#2c3834;outline:none;min-width:0}.input:focus,.select:focus{border-color:#4b9a87;box-shadow:0 0 0 3px #d9eee6}.input.search{width:min(340px,100%)}.filter-row{display:flex;align-items:end;gap:12px;flex-wrap:wrap;margin-bottom:18px}.filter-row .field{min-width:160px}.subtle{border:0;background:transparent;color:#26726d;font-weight:650;padding:6px}
.practice-grid{display:grid;grid-template-columns:minmax(250px,.82fr) minmax(450px,1.55fr);gap:22px;min-height:610px}.prompt{padding:34px;display:flex;flex-direction:column;justify-content:center;min-width:0}.prompt .eyebrow{margin-bottom:18px}.prompt h2{font-size:clamp(38px,4.1vw,57px);line-height:1.3;margin-bottom:14px;overflow-wrap:anywhere}.prompt .hint{color:#77827e;font-size:14px;margin-bottom:24px}.answer-box{padding:19px 21px;background:#eaf4ef;border:1px solid #cee5da;border-radius:14px;margin-bottom:15px;min-height:112px}.answer-box .word{font-size:35px;color:#145c54;line-height:1.45}.answer-box .example{font-size:16px;border-top:1px solid #d4e4db;padding-top:10px;margin-top:10px}.answer-box p{margin:2px 0}.grade-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}.canvas-card{overflow:hidden;display:flex;flex-direction:column;min-height:610px}.canvas-top{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid #eeeee8;gap:8px}.canvas-top strong{font-size:13px;color:#697871}.canvas-tools{display:flex;align-items:center;gap:4px}.canvas-tools .btn{min-height:34px;padding:6px 9px;font-size:12px}.canvas-wrap{flex:1;min-height:410px;position:relative;background:#fffefa;background-image:linear-gradient(to bottom,transparent 49.9%,#e6e6df 50%,transparent 50.1%),linear-gradient(to right,transparent 49.9%,#f0efea 50%,transparent 50.1%);background-size:100% 110px,100% 100%;overflow:hidden}.canvas-wrap:after{content:"在这里手写泰文";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);color:#ced3cc;font-size:20px;pointer-events:none;opacity:var(--placeholder-opacity,1)}canvas.ink{width:100%;height:100%;touch-action:none;display:block;position:absolute;inset:0;cursor:crosshair}.canvas-foot{border-top:1px solid #eeeee8;padding:11px 17px;display:flex;justify-content:space-between;align-items:center;color:#8b9690;font-size:12px;gap:10px}.switch-line{display:inline-flex;align-items:center;gap:7px;cursor:pointer}.switch-line input{accent-color:#146a69}
.empty{padding:60px 28px;text-align:center;color:#77847c}.empty .thai{font-size:44px;color:#267b72;margin-bottom:4px}.empty h2{color:#2f3b36}.section{margin-top:32px}.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.section-title h2{margin:0}.list{display:grid;gap:10px}.list-row{display:flex;align-items:center;gap:13px;padding:14px 17px}.list-row .main-text{flex:1;min-width:0}.list-row .thai{font-size:22px;color:#1c605b}.list-row .zh{font-size:14px;color:#65716b}.list-row .meta{font-size:12px;color:#9a9e98}.list-row .buttons{display:flex;gap:5px}.list-row .buttons .btn{border-radius:9px}.list-row .buttons svg{width:16px;height:16px}.score{font-size:13px;color:#327665}
.setup-card{padding:28px;margin-bottom:24px}.setup-card h2{margin-bottom:5px}.setup-card p{color:#78847e;font-size:14px;line-height:1.6}.setup-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px;margin:22px 0}.practice-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px;color:#74817a;font-size:13px}.pick-words{max-height:220px;overflow:auto;border:1px solid #e0e4dc;border-radius:12px;padding:8px}.pick-words label{display:flex;gap:9px;align-items:center;padding:8px 9px;border-radius:8px;font-size:13px}.pick-words label:hover{background:#f2f6f1}.pick-words input{accent-color:#146a69}.pick-words .thai{margin-left:auto;color:#4f7c72}
.dictation-panel{display:grid;grid-template-columns:minmax(290px,.78fr) minmax(400px,1.3fr);gap:20px}.dictation-side{padding:27px;display:flex;flex-direction:column}.dictation-side h2{font-size:21px}.audio-circle{width:78px;height:78px;border-radius:25px;background:#e6f2ec;color:#146a69;border:0;display:grid;place-items:center;margin:22px 0 17px}.audio-circle:hover{background:#d8eae1}.audio-circle svg{width:32px;height:32px}.text-reveal{min-height:145px;background:#f5f8f3;border-radius:14px;padding:19px;margin:18px 0}.text-reveal .thai{font-size:25px;color:#24665e}.text-reveal p{margin-bottom:7px}.passage-text{font-size:21px;line-height:2.1;color:#31574f;background:#f6f8f3;padding:20px;border-radius:13px;margin:15px 0}.passage-text.hidden{filter:blur(9px);user-select:none}.passage-selector{display:flex;gap:8px;flex-wrap:wrap}.passage-selector .chip.active{font-weight:700}
.library-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.word-card{padding:17px;min-width:0}.word-card .top{display:flex;justify-content:space-between;align-items:start;gap:8px}.word-card .thai{font-size:25px;color:#176860;overflow-wrap:anywhere}.word-card .zh{font-size:14px;margin-top:3px}.word-card .meta{font-size:12px;color:#9b9e98;margin-top:12px}.word-card .actions{display:flex;gap:4px}.word-card .actions .btn{width:32px;min-height:32px;padding:0}.pager{display:flex;justify-content:center;gap:14px;align-items:center;margin-top:23px;color:#68766d;font-size:13px}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:13px}.stat-card{padding:22px}.stat-card .num{font-size:34px;font-weight:750;letter-spacing:-.05em;color:#1f6960}.stat-card .label{font-size:13px;color:#7d8881;margin-top:5px}.chart-card{padding:26px;margin-top:20px}.bars{height:205px;display:flex;gap:12px;align-items:end;border-bottom:1px solid #e2e8e0;margin:28px 0 0}.bar-col{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:end;height:100%;gap:7px}.bar{width:min(46px,65%);min-height:3px;background:#8bc0a9;border-radius:8px 8px 0 0}.bar-col span{font-size:11px;color:#89948c;position:relative;top:24px}.stat-bottom{margin-top:46px;display:grid;grid-template-columns:1fr 1fr;gap:15px}.info-card{padding:24px}.info-card p{color:#748078;font-size:14px;line-height:1.7;margin:0}
.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}.settings-card{padding:24px}.settings-card h2{margin-bottom:17px}.settings-card p{font-size:13px;color:#7a847d;line-height:1.65}.settings-card .field{margin:13px 0}.settings-card .input{width:100%}.settings-card .select{width:100%}.setting-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:16px}.notice{border-radius:12px;padding:13px 15px;background:#f3f5eb;color:#657456;font-size:13px;line-height:1.6}.toast{position:fixed;bottom:26px;right:28px;background:#254f48;color:#fff;padding:12px 17px;border-radius:11px;box-shadow:0 10px 30px #23493833;z-index:20;font-size:13px;max-width:calc(100vw - 40px)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media(max-width:1100px){.sidebar{width:212px}.main{padding:32px 25px 60px}.practice-grid{grid-template-columns:minmax(230px,.8fr) minmax(380px,1.4fr)}.prompt{padding:25px}.library-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:800px){.sidebar{display:none}.shell{display:block}.mobile-head{display:flex;align-items:center;justify-content:space-between;background:#fffefa;border-bottom:1px solid #e7e9e2;padding:11px 18px}.mobile-head .brand{padding:0}.mobile-nav{display:flex;position:fixed;bottom:0;left:0;right:0;background:#fffefa;border-top:1px solid #e4e8e1;z-index:15;justify-content:space-around;padding:7px 4px calc(7px + env(safe-area-inset-bottom))}.mobile-nav .nav-link{display:grid;justify-items:center;gap:2px;padding:5px 2px;min-width:57px;min-height:45px;font-size:10px}.mobile-nav .nav-link svg{width:20px;height:20px}.main{padding:25px 18px calc(95px + env(safe-area-inset-bottom))}.practice-grid,.dictation-panel{grid-template-columns:1fr}.practice-grid{min-height:auto}.prompt{min-height:350px}.canvas-card{min-height:470px}.canvas-wrap{min-height:370px}.page-head{flex-wrap:wrap}.page-head .progress-line{width:100%}.settings-grid{grid-template-columns:1fr}}
@media(max-width:580px){h1{font-size:25px}.page-head{margin-bottom:18px}.banner{align-items:start;flex-direction:column}.prompt{padding:23px;min-height:315px}.prompt h2{font-size:40px}.canvas-card{min-height:410px}.canvas-wrap{min-height:310px}.setup-grid{grid-template-columns:1fr}.library-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.stat-bottom{grid-template-columns:1fr}.filter-row .field{min-width:calc(50% - 7px);flex:1}.filter-row .field .select{width:100%}.mobile-nav{justify-content:flex-start;overflow-x:auto;scrollbar-width:none}.mobile-nav::-webkit-scrollbar{display:none}.mobile-nav .nav-link{min-width:60px;flex:0 0 60px}.mobile-nav .nav-link span{max-width:56px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}
@media(max-width:580px){.canvas-top{flex-direction:column;align-items:flex-start}.canvas-tools{width:100%;justify-content:flex-end}.canvas-tools .btn{white-space:nowrap}}