@font-face{font-family:Inter;src:url('/fonts/InterVariable.woff2') format('woff2');font-weight:100 900;font-display:swap}@font-face{font-family:'Noto Sans Thai';src:url('/fonts/NotoSansThai.ttf') format('truetype');font-weight:100 900;font-display:swap;unicode-range:U+0E00-0E7F}
:root{--ink:#242424;--muted:#7b8079;--paper:#fff;--line:#e4e7e1;--green:#62bf53;--wash:#f4f6f1}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:14px/1.65 Inter,'Noto Sans Thai',sans-serif;font-feature-settings:'cv11'}button,input,select{font:inherit}button,a,input,select{outline-offset:4px}button,a{cursor:pointer}button{border:0;border-radius:8px;padding:12px 18px;background:var(--ink);color:white;font-weight:600;transition:background .15s}button:hover{background:#3b3b3b}button:disabled{opacity:.45;cursor:default}button.secondary{background:white;border:1px solid var(--line);color:var(--ink)}button.secondary:hover{background:var(--wash)}a{color:var(--ink)}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.15}h1{font-size:48px;letter-spacing:-2px;font-weight:800}h2{font-size:30px;letter-spacing:-1px}h3{font-size:19px;letter-spacing:-.4px}small,.muted{color:var(--muted)}.green{color:var(--green)}.eyebrow{font-size:11px;letter-spacing:.7px;text-transform:uppercase;font-weight:700}.brand{font-weight:800;letter-spacing:-.8px;font-size:24px;line-height:1.2;white-space:nowrap}.brand span{display:block;font-size:9px;letter-spacing:.5px;color:var(--muted);font-weight:600;margin-top:7px}.accent-line{width:82px;height:6px;background:var(--green);border-radius:9px;margin:27px 0 32px}.login{min-height:100vh;display:grid;grid-template-columns:1.2fr 1fr}.login-cover{padding:55px 11%;display:flex;flex-direction:column;justify-content:space-between;min-height:730px}.login-statement h1{font-size:clamp(48px,5.5vw,82px);line-height:1.02;margin:22px 0 0;letter-spacing:-3.5px}.login-statement h3{font-size:20px}.login-form{padding:60px 16%;display:flex;justify-content:center;flex-direction:column;background:var(--ink);color:white}.login-form h2{font-size:38px;margin-bottom:14px}.login-form .muted,.login-form .footer{color:#bbbfb8}.login-form input{background:#303030;color:white;border-color:#505050}.login-form button{background:var(--green);color:#162c12}.login-form .error{color:#ffb5a4}.field{display:block;margin-bottom:20px}.field input,.field select,input,select{display:block;width:100%;border:1px solid var(--line);border-radius:6px;background:#fff;padding:11px 12px;color:var(--ink);margin-top:6px}label{font-size:12px;font-weight:550}.full{width:100%}.error{color:#a13627;min-height:24px;font-size:13px}.header{height:90px;border-bottom:1px solid var(--line);padding:0 45px;display:flex;align-items:center;justify-content:space-between}.identity{display:flex;align-items:center;gap:18px}.avatar{width:36px;height:36px;display:grid;place-items:center;background:var(--wash);border:1px solid var(--line);border-radius:50%;font-size:11px}.layout{display:grid;grid-template-columns:268px 1fr;max-width:1700px;margin:auto}.sidebar{padding:32px 22px;border-right:1px solid var(--line)}.sidebar h3{font-size:17px}.sidebar .eyebrow{margin-top:30px}.overview-link{width:100%;text-align:left;font-size:12px}.lesson-button{width:100%;background:none;color:var(--ink);text-align:left;display:flex;align-items:center;gap:12px;padding:12px;border-radius:7px;font-size:12px;margin-bottom:3px;font-weight:500}.lesson-button:hover{background:var(--wash)}.lesson-button.active{background:var(--ink);color:white}.lesson-button .number{color:var(--green);font-size:11px;min-width:21px;font-weight:700}.main{padding:32px 48px 50px;width:100%;min-width:0}.welcome{display:flex;align-items:center;justify-content:space-between;margin-bottom:30px;gap:18px}.welcome p{margin:0}.welcome small{font-size:11px}.overview-layout{display:block;max-width:1700px}.overview-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:55px;align-items:center;padding:26px 0 45px}.course-statement h1{font-size:clamp(38px,5vw,78px);letter-spacing:-3px;line-height:1.01;margin:24px 0 0}.course-statement h3{font-size:21px;line-height:1.2}.course-statement .muted{font-size:17px;line-height:1.5}.module-count{display:inline-flex;gap:10px;background:var(--ink);color:white;border-radius:10px;padding:10px 16px;font-size:11px;margin-top:30px}.module-count b{color:var(--green)}.course-map{position:relative;background:var(--wash);border:1px solid var(--line);border-radius:24px;padding:32px;overflow:hidden}.course-map>h2{font-size:32px;margin:10px 0}.course-map>p{position:relative;z-index:1}.map-number{position:absolute;right:25px;top:-25px;font-size:155px;line-height:1.3;font-weight:800;color:#e7f3df;letter-spacing:-9px;pointer-events:none}.module-grid{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:28px}.module-card{display:flex;align-items:center;gap:10px;background:white;color:var(--ink);border:1px solid var(--line);text-align:left;border-radius:10px;min-height:72px;padding:14px 12px;font-size:11px;line-height:1.3;font-weight:600}.module-card:hover{background:#ecf7e6;border-color:var(--green)}.module-card .number{color:var(--green);font-size:11px;flex-shrink:0}.module-arrow{margin-left:auto;color:var(--muted);opacity:0}.module-card:hover .module-arrow{opacity:1}.pill{padding:6px 10px;border:1px solid var(--line);border-radius:20px;font-size:10px;white-space:nowrap}.lesson-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.lesson-title h1{font-size:43px;margin:8px 0 0}.player{background:var(--ink);aspect-ratio:16/9;position:relative;border-radius:12px;overflow:hidden;color:white;display:flex;align-items:center;justify-content:center;isolation:isolate}.player iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.player-center{text-align:center;position:relative;padding:24px;max-width:90%}.player-center h2{font-size:38px;color:white;margin-bottom:12px}.player-center p:not(.eyebrow){color:#c1c4bd;font-size:13px}.play-button{background:var(--green);color:#122c11;margin:12px}.play-button:hover{background:#77d268}.player .secondary{background:transparent;color:white;border-color:#ffffff50;font-size:11px;display:block;margin:20px auto 0}.player .secondary:hover{background:#ffffff15}.mock-slide h2{font-size:clamp(24px,4vw,55px);font-weight:800;line-height:1.05}.watermark-image{position:absolute;inset:0;width:100%;height:100%;object-fit:fill;z-index:3;pointer-events:none;user-select:none}.player:fullscreen{width:100vw;height:100vh;border-radius:0;aspect-ratio:auto}.player:fullscreen .watermark-image{object-fit:contain}.player-toolbar{display:flex;align-items:center;justify-content:space-between;margin-top:11px;color:var(--muted);font-size:10px;letter-spacing:.5px}.player-toolbar button{font-size:10px;padding:7px 12px}.resources{background:var(--wash);border:1px solid var(--line);border-radius:12px;padding:23px;display:flex;justify-content:space-between;align-items:center;margin-top:24px;gap:20px}.resources .eyebrow{margin-bottom:10px}.resources h3{margin:0}.resources p{margin:5px 0 0;font-size:12px}.resources a{background:white;padding:10px 18px;border:1px solid var(--line);border-radius:7px;text-decoration:none;white-space:nowrap;font-size:12px}.next{margin-top:22px;display:flex;justify-content:space-between;gap:10px}.next button{font-size:12px}.admin{max-width:1120px;margin:auto;padding:40px 30px}.admin h1{font-size:38px}.tabs{display:flex;gap:10px;margin:24px 0}.admin-row{display:grid;grid-template-columns:32px 1fr 1.4fr 85px;gap:12px;align-items:center;margin:12px 0;padding-bottom:12px;border-bottom:1px solid var(--line)}.admin-row label{font-size:10px}.admin-row input{font-size:12px}.mapping{background:var(--wash);border:1px solid var(--line);border-radius:14px;padding:28px}.stats{display:flex;gap:40px;padding:20px 0}.stats strong{display:block;font-size:30px;line-height:1.4}.account{margin-top:40px;border-top:1px solid var(--line);padding-top:22px}.account h3{font-size:16px}.account form{max-width:430px}.account input{font-size:12px}.account button{font-size:12px}.stack{display:grid;gap:15px}.footer{font-size:10px;color:var(--muted);padding-top:28px}.notice{background:#f0f7eb;color:#57784a;padding:10px 14px;border-radius:7px;font-size:10px;margin:14px 0}#toast{position:fixed;right:25px;bottom:25px;background:var(--ink);color:white;padding:12px 20px;border-radius:7px;display:none;z-index:10}
@media(min-width:1600px){.module-card{font-size:13px;min-height:85px}.course-map{padding:38px}.overview-grid{gap:80px}}@media(max-width:1100px){.overview-grid{gap:25px;grid-template-columns:1fr 1.25fr}.main{padding:30px}.course-map{padding:24px}.module-grid{grid-template-columns:repeat(2,1fr)}.course-statement h1{font-size:49px}.header{padding:0 30px}.identity .user-name{display:none}}@media(max-width:750px){.login{grid-template-columns:1fr}.login-cover{min-height:470px;padding:32px}.login-statement h1{font-size:53px;margin-top:20px}.login-form{padding:40px 32px}.header{padding:18px 20px;height:auto;gap:16px}.brand{font-size:19px}.brand span{font-size:7px}.identity{gap:8px}.identity .avatar{display:none}.identity button{font-size:10px;padding:8px 10px}.overview-grid{grid-template-columns:1fr;gap:32px;padding-top:0}.course-statement h1{font-size:52px}.course-statement .module-count{margin-top:12px}.main{padding:24px 20px}.course-map{padding:24px 18px;border-radius:18px}.course-map h2{font-size:28px}.module-grid{grid-template-columns:repeat(2,1fr)}.module-card{min-height:70px}.layout{display:block}.sidebar{padding:18px 20px;border-right:0;border-bottom:1px solid var(--line)}.sidebar .eyebrow,.sidebar h3{display:none}.lesson-list{display:flex;overflow:auto;margin-top:12px;gap:7px}.lesson-button{width:auto;min-width:140px;font-size:10px;padding:10px}.welcome{flex-wrap:wrap;gap:8px}.welcome small{font-size:10px}.lesson-title h1{font-size:30px;letter-spacing:-1px}.lesson-title{gap:12px}.player-center h2{font-size:26px}.player-center p:not(.eyebrow){font-size:10px}.player-center{padding:16px}.player-center .eyebrow{font-size:8px}.player{min-height:225px}.mock-slide h2{font-size:32px}.player-center small{font-size:9px}.resources{flex-wrap:wrap;padding:20px}.resources a{width:100%;text-align:center}.admin{padding:30px 20px}.admin-row{grid-template-columns:24px 1fr}.stats{gap:22px}.stats strong{font-size:24px}.mapping{padding:20px}.course-statement h3{font-size:20px}}
/* Original PNG alpha peaks at 13/255. Display at ~51%, preserving pixels and layout. */
.watermark-image{filter:url('/watermark-filter.svg#visible-watermark')}
.player.expanded{position:fixed;inset:0;width:100vw;height:100dvh;border-radius:0;aspect-ratio:auto;z-index:100;background:#111}.player.expanded .watermark-image{object-fit:contain}.player-close{position:absolute;right:16px;top:16px;background:#242424;border:1px solid #777;z-index:5;padding:8px 13px;font-size:12px}.player-open{overflow:hidden}@media(max-width:750px){.player{min-height:0}.mock-slide p:not(.eyebrow){display:none}.player-center{padding:12px}.mock-slide h2{font-size:28px}.player .secondary{margin-top:10px;padding:7px 10px}.player .eyebrow{margin-bottom:10px}}
.player{container-type:inline-size}@media(max-width:500px){.mock-slide{padding:8px}.mock-slide .eyebrow,.mock-slide small{display:none}.mock-slide h2{font-size:clamp(16px,7cqw,28px);margin:0;line-height:1.05}.mock-slide .secondary{margin-top:8px;padding:5px 9px;font-size:9px}}
.resource-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.resources a.download-pdf{background:var(--ink);color:white;border-color:var(--ink);font-weight:600}.resources a.download-pdf:hover{background:#3b3b3b}@media(max-width:750px){.resource-actions{width:100%}.resource-actions a{flex:1;min-width:140px}}
.student-heading{display:flex;align-items:center;justify-content:space-between;gap:20px}.student-heading p{margin-bottom:12px}.student-row{display:grid;grid-template-columns:55px 1fr 90px 120px;align-items:center;gap:15px;border-bottom:1px solid var(--line);padding:16px 0;font-size:12px}.student-row button{font-size:11px;padding:9px 12px}.student-editor{margin-top:28px;padding:24px;background:white;border:1px solid var(--line);border-radius:12px;max-width:620px}.student-editor .muted{font-size:11px;margin:0}.password-entry{display:flex;gap:8px;align-items:center}.password-entry input{flex:1;min-width:0}.password-entry button{margin-top:6px}@media(max-width:750px){.student-row{grid-template-columns:45px 1fr}.student-heading{flex-wrap:wrap}.tabs{flex-wrap:wrap}.student-editor{padding:18px}}

.content-group{border:1px solid #e3e7e1;border-radius:16px;padding:24px;display:grid;gap:18px;margin:12px 0}.content-group legend{font-weight:700;color:#62bf53}.content-group textarea{width:100%;padding:12px;border:1px solid #dce1d9;border-radius:8px;font:inherit;resize:vertical;margin-top:8px}

.discussion{margin:32px 0;padding:28px;border:1px solid #e3e7e1;border-radius:18px;background:#fff}.discussion textarea{width:100%;padding:14px;font:inherit;border:1px solid #dce1d9;border-radius:10px;resize:vertical}.comment{padding:20px 0;border-bottom:1px solid #e3e7e1}.comment-meta{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.comment-meta small{color:#7b8178}.comment-message{white-space:pre-wrap;overflow-wrap:anywhere}.reply-button{display:block;margin:12px 0}.comments-list{margin-bottom:24px}

.inbox-filters{display:grid;grid-template-columns:1fr 1fr 2fr;gap:16px;margin:24px 0}.inbox-card{border:1px solid #e3e7e1;border-radius:16px;padding:24px;margin:20px 0}.inbox-reply-form textarea{width:100%;padding:12px;font:inherit;border:1px solid #dce1d9;border-radius:8px;resize:vertical}.inbox-replies{margin:20px 0}.inbox-reply{border-left:3px solid #62bf53;padding:12px 18px;background:#f4f7f2;margin:8px 0}.tabs{flex-wrap:wrap}@media(max-width:700px){.inbox-filters{grid-template-columns:1fr}.inbox-card{padding:16px}}

.comment-actions{display:flex;gap:8px;margin:12px 0}.comment-edit-form textarea{width:100%;font:inherit;padding:12px;border:1px solid #dce1d9;border-radius:8px}

.comment-button-row{display:flex;align-items:center;gap:6px;margin:12px 0}.comment-button-row .comment-actions{display:flex;gap:6px;margin:0}.comment-button-row button{padding:7px 12px;font-size:12px;line-height:1.3;min-height:32px;border-radius:7px;width:auto}.comment-button-row .reply-button{display:inline-flex;margin:0}

.attachment-preview{display:block;max-width:560px;margin:14px 0}.attachment-preview img{display:block;max-width:100%;max-height:360px;object-fit:contain;border:1px solid #e3e7e1;border-radius:10px;background:#f4f7f2}.attachment-preview small{display:block;margin:7px 0;color:#7b8178}

.login-password-wrap{position:relative}.login-password-wrap input{padding-right:52px}.login-password-wrap .password-eye{position:absolute;right:7px;top:50%;transform:translateY(-50%);display:flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;background:transparent;border:0;color:#555;border-radius:6px}.password-eye:hover{background:#edf3e9}.password-eye .eye-slash{display:none}.password-eye[aria-pressed="true"] .eye-slash{display:block}

.admin .tabs{display:flex;flex-wrap:nowrap;gap:10px;overflow-x:auto;max-width:100%;padding-bottom:6px}.admin .tabs button{flex:0 0 auto;white-space:nowrap}

.admin .tabs button.active{background:#242424;color:#fff;border-color:#242424}.admin .tabs button:not(.active){background:#fff;color:#242424;border:1px solid #e3e7e1}

#mapping > .resource-actions + p.muted{margin-top:18px}

.table-wrap{overflow:auto;margin:20px 0 28px}.table-wrap table{border-collapse:collapse;width:100%;font-size:13px}.table-wrap td,.table-wrap th{text-align:left;border-bottom:1px solid #e3e7e1;padding:12px;vertical-align:top}.table-wrap th{background:#edf3e9}.table-wrap button{padding:7px 12px;font-size:12px}#comment-badge:not(:empty){display:inline-block;background:#62bf53;color:#162514;border-radius:999px;padding:2px 6px;margin-left:4px;font-size:11px}

.lesson-admin-row{grid-template-columns:26px minmax(140px,2fr) minmax(100px,1fr) minmax(180px,2fr) auto}@media(max-width:800px){.lesson-admin-row{grid-template-columns:1fr}.lesson-admin-row label{min-width:0}}

.admin .tabs{display:flex;flex-wrap:wrap;gap:6px;overflow:visible;padding-bottom:0}.admin .tabs button{padding:9px 11px;font-size:12px;line-height:1.35;border-radius:7px;flex:0 0 auto}

.admin .tabs{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:5px;overflow:visible}.admin .tabs button{min-width:0;padding:8px 3px;font-size:clamp(8px,.82vw,11px);line-height:1.3;white-space:normal;overflow-wrap:normal;border-radius:6px}

#mapping > #create-backup + p.muted{margin-top:18px}#mapping > #session-limit + h3{margin-top:24px}

.session-student-list{overflow-x:auto;margin:18px 0 28px}.session-student-row{display:flex;align-items:center;gap:18px;padding:14px 0;border-bottom:1px solid #e3e7e1;min-width:max-content}.session-student-name{white-space:nowrap;flex:1;min-width:300px}.session-count{white-space:nowrap}.session-student-row button{white-space:nowrap;flex-shrink:0}

.learning-summary{display:flex;align-items:center;justify-content:space-between;gap:24px;background:#f4f6f1;border:1px solid #e3e7e1;border-radius:18px;padding:24px;margin:0 0 30px}.learning-summary h3{margin-bottom:12px}.learning-summary progress{display:block;width:260px;max-width:100%;height:8px;accent-color:#62bf53;margin:12px 0}.learning-summary small{display:block}.completion-panel{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0}.answer-notifications{margin:24px auto;padding:24px;max-width:1100px;background:#f4f6f1;border:1px solid #e3e7e1;border-radius:16px}.answer-link{display:block;width:100%;text-align:left;margin:8px 0}.answer-link small{display:block;color:#7b8079}#reply-badge:not(:empty),.new-answer{background:#62bf53;border-radius:999px;color:#162514;padding:2px 6px;margin-left:5px}@media(max-width:700px){.learning-summary{display:block}.learning-summary>div+div{margin-top:20px}.completion-panel{flex-wrap:wrap}.answer-notifications{margin:16px}}

.lesson-subtopics{margin:4px 0 16px 17px;padding:10px 12px 10px 24px;border-left:2px solid #62bf53;background:#f4f6f1;border-radius:0 8px 8px 0;font-size:11px;line-height:1.5}.lesson-subtopics li{padding:5px 0;color:#596053;overflow-wrap:anywhere}.lesson-subtopics li::marker{color:#62bf53;font-weight:600}@media(max-width:700px){.lesson-list{flex-wrap:wrap}.lesson-subtopics{flex-basis:100%;order:0;margin-left:0}}

.lesson-subtopics .subtopic-heading{list-style:none;font-weight:700;color:#242424;padding-top:12px;margin-left:-18px}

.lesson-subtopics{font-size:12px;line-height:1.55;list-style:disc}

.lesson-subtopics{border-left:0;background:transparent;border-radius:0}

.watermark-image.custom-watermark{filter:none}.custom-watermark-preview{display:block;width:100%;max-width:560px;max-height:315px;object-fit:contain;background:#242424;border-radius:10px}.watermark-editor{margin-top:24px}

.device-card{margin-top:20px;padding:22px;background:#fff;border:1px solid #e1e5dd;border-radius:14px}.device-card h4{margin:0 0 12px}.device-row{display:flex;gap:18px;justify-content:space-between;align-items:center;padding:16px 0;border-top:1px solid #e1e5dd;margin-top:16px}.device-row p{overflow-wrap:anywhere;margin:8px 0}.device-row>div:first-child{min-width:0}.expiry-form{align-items:end;margin:18px 0 8px}.expiry-form label{max-width:300px}.device-card[hidden]{display:none}@media(max-width:640px){.device-row{flex-direction:column;align-items:start}.expiry-form{flex-wrap:wrap}}