@font-face{font-family:Tibetan;src:url(../assets/fonts/NotoSerifTibetan-TibetanSubset.woff2) format('woff2');font-display:swap;unicode-range:U+0F00-0FFF}
:root{--bg:#f6f3ec;--panel:#fffefa;--ink:#22211f;--muted:#70695f;--line:#ddd5c8;--green:#1f7a6d;--soft:#e5f0eb;--red:#b63932;--orange:#a15f30;--serif:Tibetan,'Noto Serif Tibetan',serif}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,-apple-system,'Segoe UI',sans-serif;font-size:15px;line-height:1.65}button,input,select{font:inherit}button{cursor:pointer}button,a,input,select{touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #80b9a9;outline-offset:3px}button{color:inherit}a{color:var(--green)}h1,h2,h3,h4,p{margin:0}h1{font-size:34px;line-height:1.3;letter-spacing:-1px}h2{font-size:25px;line-height:1.35}h3{font-size:19px}small{font-size:12px;color:var(--muted)}[hidden]{display:none!important}.tib{font-family:var(--serif);line-height:2;font-weight:400;overflow-wrap:anywhere}.muted{color:var(--muted)}.eyebrow{color:var(--orange);font-size:11px;letter-spacing:1.6px;font-weight:750}.label{font-size:12px;color:var(--muted)}.draft-bar{background:#e8e2d7;color:#645a4c;font-size:12px;display:flex;justify-content:center;align-items:center;gap:20px;padding:6px 16px}.draft-bar>span:first-child{font-weight:700}.draft-bar button{border:0;background:none;color:inherit;font-size:12px}.shell{max-width:1120px;margin:auto;padding:0 28px}.header{display:flex;align-items:center;justify-content:space-between;gap:48px;padding:27px 0 20px}.brand{border:0;background:none;text-align:left;padding:0;flex:none}.brand strong{display:block;font-size:35px;line-height:1.25;letter-spacing:-1px}.search-bar{display:flex;gap:10px;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:9px;padding:7px 8px 7px 15px;width:min(490px,100%)}.search-bar>span{font-size:27px;line-height:1;color:var(--muted)}.search-bar input{min-width:0;flex:1;border:0;background:none;outline:0;font-size:13px}.search-bar button{border:0;border-radius:6px;padding:7px 13px;background:var(--green);color:white;font-size:13px;font-weight:650}.nav{display:flex;gap:30px;border-bottom:1px solid var(--line);margin-bottom:30px}.nav button{border:0;border-bottom:3px solid transparent;background:none;padding:10px 2px 12px;color:var(--muted);font-weight:700}.nav button.active{border-color:var(--green);color:var(--green)}main{min-height:560px}.topline{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;margin:0 0 22px}.topline p{margin-top:7px;color:var(--muted)}.btn{border:1px solid var(--line);background:var(--panel);border-radius:7px;padding:9px 14px;display:inline-flex;align-items:center;justify-content:center;gap:6px;text-decoration:none;font-size:13px;font-weight:650;line-height:1.6}.btn.primary{border-color:var(--green);background:var(--green);color:#fff}.btn.soft{background:var(--soft);border-color:#bfd6cd;color:var(--green)}.text-btn{border:0;background:none;color:var(--green);padding:0;text-align:left;font-size:13px}.badge{display:inline-block;padding:2px 7px;border-radius:4px;background:#eee8dd;font-size:11px;color:var(--muted);font-family:system-ui;line-height:1.7;font-weight:500}.badge.green{background:var(--soft);color:var(--green)}.badge.red{background:#f7e4e1;color:var(--red)}.badge.orange{background:#f7ebdb;color:var(--orange)}.tag-row{display:flex;gap:7px;align-items:center;flex-wrap:wrap}.intro{background:#eef2e8;border:1px solid #d5ded0;border-left:4px solid var(--green);border-radius:8px;padding:25px 28px;margin-bottom:28px;display:flex;align-items:center;justify-content:space-between;gap:30px}.intro h2{font-size:25px;margin:5px 0 8px}.intro p{max-width:630px;color:#676f5e;font-size:14px}.intro .btn{flex:none}.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.course-card{background:var(--panel);border:1px solid var(--line);border-radius:9px;overflow:hidden}.course-card .card-head{padding:22px 22px 18px}.course-number{font-family:Georgia,serif;font-size:32px;color:#b3b09e;line-height:1}.course-card h3{font-size:23px;margin:10px 0 7px}.course-card .card-head>p{font-size:13px;color:var(--muted);min-height:43px}.part-link{display:block;width:100%;border:0;border-top:1px solid var(--line);background:none;text-align:left;padding:17px 22px;position:relative}.part-link:hover{background:#f3f6ef}.part-link strong{font-size:14px}.part-link .scene{display:block;color:var(--muted);font-size:12px;margin-top:4px;padding-right:10px}.part-link:after{content:'→';position:absolute;right:20px;top:19px;color:var(--green)}.section-gap{margin-top:32px}.quick-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:13px}.quick-box{border-top:1px solid var(--line);padding:18px 0;display:flex;justify-content:space-between;align-items:flex-start;gap:18px}.quick-box h3{font-size:16px;margin-bottom:7px}.quick-box p{font-size:13px;color:var(--muted)}.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:13px}.chip{border:1px solid var(--line);background:var(--panel);border-radius:20px;padding:5px 12px;font-size:12px;color:var(--muted)}.chip.active{background:var(--soft);border-color:#aacabc;color:var(--green)}.crumb{font-size:12px;color:var(--muted);display:flex;gap:8px;flex-wrap:wrap;margin-bottom:17px}.crumb button{border:0;background:none;padding:0;color:var(--muted);font-size:12px}.lesson-layout{display:grid;grid-template-columns:188px minmax(0,1fr);gap:28px}.lesson-sidebar{border-right:1px solid var(--line);padding-right:18px}.lesson-sidebar .side-group{margin-bottom:21px}.lesson-sidebar h3{font-size:13px;color:var(--muted);padding:0 10px 7px}.side-part{width:100%;border:0;background:none;text-align:left;border-radius:6px;padding:9px 10px;margin:3px 0;font-size:12px;color:var(--muted)}.side-part strong{display:block;font-size:13px;color:var(--ink)}.side-part.active{background:var(--soft);color:var(--green)}.side-part.active strong{color:var(--green)}.lesson-heading{margin-bottom:20px}.lesson-heading h1{font-size:28px;margin:7px 0}.lesson-heading p{font-size:13px;color:var(--muted)}.mobile-part-select{display:none}.steps{display:flex;border-bottom:1px solid var(--line);gap:25px;margin-bottom:18px}.steps button{background:none;border:0;border-bottom:3px solid transparent;padding:10px 0;color:var(--muted);font-size:14px;white-space:nowrap}.steps button.active{color:var(--green);border-color:var(--green);font-weight:750}.steps button small{margin-left:5px}.section-note{font-size:12px;color:var(--muted);margin-bottom:18px;display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.word-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.word-card{text-align:left;border:1px solid var(--line);border-radius:7px;background:var(--panel);padding:13px 15px;min-height:151px}.word-card:hover{border-color:#83b3a3}.word-card .tib{display:block;font-size:25px;margin:0 0 4px}.word-card .meaning{font-size:14px;font-weight:650}.reading{font-size:12px;letter-spacing:.3px;color:var(--muted);margin-top:5px;line-height:1.7}.reading.exception{color:var(--red);font-weight:650}.word-card .badge{margin-top:5px}.bottom-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:25px 0 12px}.dialogue-toolbar{display:flex;gap:8px;justify-content:flex-end;margin-bottom:15px}.dialogue-row{display:flex;gap:14px;margin:0 0 12px;align-items:flex-start}.speaker{border:1px solid var(--line);color:var(--muted);width:32px;height:32px;display:flex;align-items:center;justify-content:center;font-size:12px;border-radius:50%;flex:none;margin-top:7px}.dialogue-bubble{background:var(--panel);border:1px solid var(--line);border-radius:0 9px 9px 9px;padding:15px 20px;flex:1;min-width:0}.dialogue-bubble .tib{font-size:23px}.dialogue-bubble .translation{font-size:13px;color:var(--muted);margin-top:8px}.inline-word{border:0;border-bottom:1px dashed #9dbfb1;background:none;font:inherit;padding:0;color:inherit;display:inline}.inline-word:hover{color:var(--green)}.dialogue-footer{margin:20px 0;padding:18px;background:var(--soft);border-radius:7px;font-size:13px;color:#43695b}.grammar-list{display:flex;flex-direction:column;gap:12px}.grammar-card{width:100%;border:1px solid var(--line);background:var(--panel);border-radius:8px;text-align:left;padding:18px 20px}.grammar-card:hover{border-color:#83b3a3}.grammar-card h3{font-size:17px;margin:8px 0 7px}.grammar-card p{font-size:13px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.grammar-card .preview-example{margin-top:9px;font-size:19px;color:var(--ink)}.grammar-card .preview-foot{margin-top:9px;display:flex;justify-content:space-between;font-size:12px;color:var(--green)}.lookup-header{margin-bottom:22px}.lookup-header h1{font-size:28px}.lookup-header p{font-size:13px;margin:8px 0;color:var(--muted)}.lookup-controls{display:flex;gap:10px;align-items:center;justify-content:space-between;margin:20px 0}.filter-row{display:flex;gap:7px;flex-wrap:wrap}.filter-row button{border:1px solid var(--line);background:none;border-radius:6px;padding:6px 12px;font-size:13px;color:var(--muted)}.filter-row button.active{border-color:var(--green);background:var(--green);color:white}.lookup-controls select{border:1px solid var(--line);border-radius:6px;background:var(--panel);padding:7px 10px;font-size:12px;max-width:160px}.result-section{margin-top:23px}.result-title{display:flex;align-items:center;gap:9px;font-size:15px;margin-bottom:12px}.result-title span{font-size:11px;color:var(--muted);font-weight:400}.result-word{border-bottom:1px solid var(--line);padding:16px 4px;display:flex;align-items:center;gap:18px;width:100%;border-top:0;border-left:0;border-right:0;background:none;text-align:left}.result-word .tib{font-size:24px;min-width:145px}.result-word .word-copy{flex:1}.result-word .meaning{font-weight:650;font-size:14px}.result-word .source{font-size:11px;color:var(--muted);margin-top:3px}.result-word .arrow{color:var(--green)}.result-example{display:block;width:100%;border:1px solid var(--line);border-radius:7px;text-align:left;padding:16px 19px;background:var(--panel);margin-bottom:10px}.result-example .tib{font-size:21px}.result-example p{color:var(--muted);font-size:13px;margin-top:7px}.empty{border:1px dashed var(--line);border-radius:8px;text-align:center;padding:40px 24px;color:var(--muted)}.empty h3{color:var(--ink);margin-bottom:8px}.empty p{font-size:13px}.practice-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:26px}.practice-picker{border-right:1px solid var(--line);padding-right:23px}.practice-option{width:100%;border:1px solid transparent;background:none;text-align:left;border-radius:8px;padding:13px 15px;margin:5px 0;color:var(--muted)}.practice-option strong{display:block;font-size:14px;color:var(--ink)}.practice-option small{display:block;margin-top:4px}.practice-option.active{background:var(--soft);border-color:#bfd6cd}.practice-option.active strong{color:var(--green)}.practice-picker .scope-note{margin:20px 10px;font-size:12px;color:var(--muted)}.exercise{border:1px solid var(--line);background:var(--panel);border-radius:10px;padding:27px 32px}.exercise h2{font-size:22px;margin:15px 0 8px}.exercise .prompt{font-size:14px;color:var(--muted)}.exercise-sentence{font-family:var(--serif);font-size:29px;line-height:2;text-align:center;padding:27px 0 21px;overflow-wrap:anywhere}.exercise-choices{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.choice{border:1px solid var(--line);background:var(--bg);border-radius:7px;padding:12px 8px;font-size:26px;line-height:2}.choice.correct{border-color:var(--green);background:var(--soft);color:var(--green)}.choice.incorrect{border-color:var(--red);background:#f7e4e1;color:var(--red)}.feedback{border-radius:7px;background:var(--soft);color:#325f50;font-size:13px;margin-top:20px;padding:16px}.feedback .tib{display:block;font-size:23px;margin:5px 0}.feedback.wrong{background:#f7e4e1;color:#8f3730}.exercise-source{font-size:11px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;margin-top:24px}.word-flip{text-align:center;min-height:170px;margin-top:22px}.word-flip h3{font-size:29px;margin:35px 0 12px}.word-flip .tib{font-size:33px}.order-pool,.order-answer{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:18px;min-height:62px}.order-answer{border:1px dashed #9cb6a9;border-radius:8px;padding:12px;align-items:center}.order-answer .placeholder{font-size:13px;color:var(--muted)}.order-token{font-family:var(--serif);font-size:23px;border:1px solid var(--line);padding:5px 12px;border-radius:6px;background:var(--bg);line-height:1.9}.order-token:disabled{opacity:.25}.center-actions{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:22px}.foundation-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.foundation-card{padding:23px;border:1px solid var(--line);background:var(--panel);border-radius:8px}.foundation-card h3{margin:9px 0}.foundation-card p{font-size:13px;color:var(--muted)}.foundation-card .btn{margin-top:19px}.design-list{display:grid;gap:18px}.design-item{border:1px solid var(--line);background:var(--panel);border-radius:8px;padding:23px 26px}.design-item h3{margin-bottom:10px}.design-item p{font-size:14px;color:var(--muted);margin:8px 0}.design-item strong{color:var(--ink)}.design-item ol,.design-item ul{padding-left:22px;font-size:14px;color:var(--muted)}.design-item li{margin:7px 0}.design-item table{font-size:12px}.footer{border-top:1px solid var(--line);margin:40px 0 0;padding:18px 0 25px;display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:11px}.footer button{background:none;border:0;color:var(--muted);font-size:11px}dialog{position:fixed;inset:0 0 0 auto;margin:0;width:540px;height:100dvh;max-width:100%;max-height:100dvh;border:0;border-left:1px solid var(--line);background:var(--panel);padding:0;box-shadow:-14px 0 60px #2222;color:var(--ink)}dialog::backdrop{background:#28271f66}.detail-header{position:sticky;top:0;background:var(--panel);border-bottom:1px solid var(--line);padding:17px 25px;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted);z-index:2}.detail-header button{background:none;border:0;font-size:25px;line-height:1;width:30px;height:30px;color:var(--muted)}#detail-body{padding:26px}.detail-title .tib{font-size:41px;line-height:1.9}.detail-title h2{font-size:24px;margin:9px 0}.detail-title .reading{font-size:15px;margin:10px 0 6px}.detail-section{border-top:1px solid var(--line);margin-top:23px;padding-top:21px}.detail-section h3{font-size:15px;margin-bottom:10px}.detail-section p{font-size:13px;color:var(--muted);margin:7px 0}.detail-section .tib{font-size:21px;color:var(--ink)}.components{display:flex;gap:9px;flex-wrap:wrap}.component{background:var(--bg);border:1px solid var(--line);padding:10px 16px;border-radius:6px;flex:1;text-align:center;min-width:115px}.component .tib{font-size:23px}.component small{display:block}.related-link{display:flex;justify-content:space-between;gap:15px;align-items:center;border:0;border-bottom:1px solid var(--line);padding:9px 0;background:none;width:100%;text-align:left;font-size:13px}.related-link .tib{font-size:20px}.detail-actions{display:flex;gap:9px;margin-top:24px;flex-wrap:wrap}.rule-body{font-size:14px;color:var(--muted);line-height:1.85;margin-top:15px}.rule-body p{margin:10px 0}.table-scroll{overflow-x:auto;max-width:100%}table{border-collapse:collapse;width:100%;font-size:13px;margin:12px 0}th,td{border:1px solid var(--line);padding:8px 10px;text-align:left}th{background:var(--bg);font-weight:650;font-size:12px}td.tib{font-size:18px;min-width:80px}.example-box{border-left:3px solid #b2cfc1;padding:10px 15px;background:#f4f7ef;margin-top:12px}.example-box .tib{font-size:21px}.example-box p{font-size:13px;color:var(--muted);margin:5px 0}.info-note{font-size:12px;color:#726449;background:#f4eddf;border-radius:6px;padding:12px 14px;margin-top:15px}.saved-note{font-size:12px;color:var(--muted);margin-top:20px}.browse-limit{font-size:12px;color:var(--muted);padding:18px 0;text-align:center}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:#253e32;color:#fff;border-radius:8px;padding:11px 18px;box-shadow:0 6px 20px #0002;font-size:13px;display:none;z-index:10;max-width:90vw;width:max-content}.split-content{display:grid;grid-template-columns:1fr 1fr;gap:16px}.readonly-ref{font-size:12px;color:var(--muted);margin-bottom:16px}
@media(max-width:900px){.shell{padding:0 22px}.header{gap:25px}.search-bar{max-width:440px}.course-grid{gap:12px}.course-card .card-head,.part-link{padding-left:17px;padding-right:17px}.word-grid{grid-template-columns:repeat(2,1fr)}.lesson-layout{grid-template-columns:160px minmax(0,1fr);gap:20px}.practice-layout{grid-template-columns:210px minmax(0,1fr);gap:20px}.exercise{padding:22px}.foundation-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){body{font-size:14px}.shell{padding:0 18px}.draft-bar{gap:13px;font-size:10px}.draft-bar>span:nth-child(2){display:none}.draft-bar button{font-size:10px}.header{display:block;padding:20px 0 14px}.brand strong{font-size:29px}.eyebrow{font-size:10px}.search-bar{margin-top:16px;max-width:none;width:100%}.search-bar input{font-size:12px}.nav{justify-content:space-between;gap:0;margin-bottom:24px}.nav button{font-size:13px;padding-bottom:11px}.topline{gap:13px}.topline h1{font-size:27px}.topline p{font-size:12px}.topline>.btn{font-size:11px;padding:8px 10px;white-space:nowrap}.intro{padding:18px 19px;display:block;margin-bottom:21px}.intro h2{font-size:21px}.intro p{font-size:13px}.intro .btn{margin-top:17px}.course-grid{grid-template-columns:1fr;gap:16px}.course-card .card-head{padding:18px 20px 14px;position:relative}.course-number{position:absolute;right:20px;top:20px;font-size:32px}.course-card h3{font-size:22px;margin:0 0 6px}.course-card .card-head>p{min-height:0;padding-right:38px;font-size:12px}.part-link{padding:15px 20px}.part-link .scene{font-size:12px}.quick-grid{grid-template-columns:1fr;gap:0}.section-gap{margin-top:27px}.lesson-layout,.practice-layout{display:block}.lesson-sidebar{display:none}.mobile-part-select{display:block;margin:0 0 18px;width:100%;border:1px solid var(--line);border-radius:6px;padding:9px;background:var(--panel);font-size:12px}.lesson-heading h1{font-size:24px}.lesson-heading p{font-size:12px}.steps{gap:22px;margin-bottom:17px}.steps button{font-size:13px}.steps button small{font-size:10px;margin-left:3px}.section-note{display:block;font-size:11px}.section-note .text-btn{display:block;margin-top:8px;font-size:12px}.word-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.word-card{padding:11px 12px;min-height:143px}.word-card .tib{font-size:23px}.word-card .meaning{font-size:13px}.reading{font-size:10px}.badge{font-size:10px}.bottom-actions{margin-top:21px}.bottom-actions .btn{font-size:12px;padding:9px 11px}.dialogue-toolbar .chip{font-size:11px}.dialogue-row{gap:9px}.speaker{width:26px;height:26px;font-size:11px}.dialogue-bubble{padding:12px 14px}.dialogue-bubble .tib{font-size:21px}.dialogue-bubble .translation{font-size:12px}.grammar-card{padding:15px}.grammar-card h3{font-size:16px}.grammar-card p{font-size:12px}.grammar-card .preview-example{font-size:18px}.lookup-controls{gap:10px;align-items:flex-start;flex-direction:column;margin:18px 0}.lookup-controls select{max-width:none;width:100%}.filter-row button{font-size:12px;padding:5px 11px}.result-word{gap:10px;padding:14px 0;align-items:flex-start}.result-word .tib{font-size:22px;min-width:110px;max-width:140px}.result-word .meaning{font-size:13px}.result-word .source{font-size:10px}.result-word .arrow{display:none}.result-example{padding:13px 15px}.result-example .tib{font-size:20px}.result-example p{font-size:12px}.practice-picker{border:0;padding:0;display:flex;gap:7px;flex-wrap:wrap;margin-bottom:20px}.practice-picker>h3,.practice-picker .scope-note{display:none}.practice-option{border:1px solid var(--line);padding:7px 10px;margin:0;flex:1;min-width:140px}.practice-option strong{font-size:12px}.practice-option small{font-size:10px;line-height:1.5}.exercise{padding:20px 17px}.exercise h2{font-size:20px}.exercise .prompt{font-size:13px}.exercise-sentence{font-size:27px;padding:23px 0 20px}.choice{font-size:23px}.exercise-choices{gap:7px}.feedback{font-size:12px;padding:13px}.order-token{font-size:22px;padding:3px 10px}.foundation-grid{grid-template-columns:1fr}.foundation-card{padding:20px}.design-item{padding:19px}.design-item p,.design-item li{font-size:13px}.split-content{grid-template-columns:1fr}.footer{font-size:10px;gap:10px}.footer span{max-width:210px}dialog{width:100%;border:0}.detail-header{padding:15px 20px}#detail-body{padding:22px 20px}.detail-title .tib{font-size:36px}.detail-title h2{font-size:23px}.detail-title .reading{font-size:14px}.detail-section p{font-size:12px}.detail-section .tib{font-size:20px}.component{padding:8px 10px;min-width:110px}.component .tib{font-size:22px}.detail-section h3{font-size:14px}td.tib{font-size:17px;min-width:75px}.table-scroll th,.table-scroll td{padding:7px}.rule-body{font-size:13px}.lookup-header h1{font-size:25px}.intro .tag-row{margin-top:12px}}

body{font-family:Inter,system-ui,-apple-system,"Segoe UI",Tibetan,sans-serif}
.formula{display:flex;flex-wrap:wrap;align-items:center;gap:7px;font-size:12px;padding:12px 13px;background:var(--soft);border-radius:6px;color:#355e50}
.formula .tib{font-size:18px;line-height:1.9}.formula b{font-weight:400;color:#88a699}
.usage-row{display:grid;grid-template-columns:135px minmax(0,1fr);align-items:start;gap:14px;padding:8px 0;border-bottom:1px solid var(--line)}
.usage-row .tib{font-size:20px;line-height:2}.usage-row p{margin:5px 0;font-size:12px}
.detail-section .usage-row:last-of-type{margin-bottom:14px}.rule-disclosure{margin-top:22px;padding:12px 14px;border:1px solid var(--line);border-radius:6px;font-size:12px;color:var(--muted)}
.rule-disclosure summary{cursor:pointer;color:var(--green)}
@media(max-width:620px){.reading{font-size:11px}.usage-row{grid-template-columns:120px minmax(0,1fr);gap:10px}.usage-row .tib{font-size:18px}}