@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Noto+Sans+Thai:wght@400;500;600;700&display=swap');
:root{--ink:#18344f;--muted:#62768a;--green:#087d75;--bg:#f3f7fc;--line:#dce6ef}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:'DM Sans','Noto Sans Thai',sans-serif;font-size:14px}button,input,select,textarea{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer;border:0}a{color:inherit}button:focus-visible,a:focus-visible{outline:3px solid #81b790;outline-offset:3px}.shell{display:grid;grid-template-columns:238px 1fr;min-height:100vh}.sidebar{background:#fff;border-right:1px solid var(--line);padding:36px 22px;display:flex;flex-direction:column;position:fixed;inset:0 auto 0 0;width:238px}.logo{font-weight:700;letter-spacing:4px;font-size:27px}.logo i{font-style:normal;color:#6b9e4d}.tagline{color:var(--muted);font-size:10px;letter-spacing:2px;margin:6px 0 48px}.nav{display:grid;gap:9px}.nav button{background:none;text-align:left;padding:14px 18px;border-radius:10px;color:#7b8981}.nav button.active{background:#eaf2e8;color:var(--green);font-weight:600}.nav span{display:inline-block;width:30px;font-size:18px}.side-bottom{margin-top:auto}.support{background:#f4f7ef;padding:18px;border-radius:14px;line-height:1.8;font-size:12px}.support b{display:block;font-size:14px}.support button{background:white;border:1px solid var(--line);padding:8px 12px;margin-top:10px;border-radius:6px}.account{display:flex;align-items:center;gap:10px;margin-top:26px}.avatar{background:#e8eddf;border-radius:50%;width:38px;height:38px;display:grid;place-items:center;font-weight:600}.account small{display:block;color:var(--muted)}main{grid-column:2;min-width:0;padding:0 44px 36px;max-width:1600px;width:100%;margin:auto}header{height:95px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);gap:12px}.breadcrumb{color:var(--muted);font-size:12px}.tools{display:flex;gap:12px;align-items:center}.pill{font-size:11px;background:#edf4e9;padding:8px 12px;border-radius:20px;color:#577449}.lang{background:white;border:1px solid var(--line);padding:8px 11px;border-radius:7px}.heading{display:flex;justify-content:space-between;align-items:center;padding:29px 0 22px}.eyebrow{font-size:10px;letter-spacing:2px;color:#7d947c;font-weight:700}h1{font-size:29px;font-weight:600;margin:8px 0}h2{font-size:20px;margin:0 0 16px}p{line-height:1.8;color:var(--muted);margin:4px 0}.hero{display:grid;grid-template-columns:1.4fr 1fr;background:#e7eee0;border:1px solid #dce7d4;border-radius:18px;overflow:hidden;min-height:220px}.hero-copy{padding:30px 34px}.hero h2{font-size:26px;line-height:1.4;max-width:430px;margin:11px 0}.hero p{color:#6c7f67;font-size:12px}.btn{padding:12px 18px;background:var(--green);color:white;border-radius:8px;font-weight:500;display:inline-flex;gap:12px;align-items:center}.btn.secondary{background:white;color:var(--green);border:1px solid var(--line)}.hero .btn{margin-top:19px}.hero-art{position:relative;overflow:hidden;display:grid;place-items:center;background:radial-gradient(circle at center,#f1f4e7 0,transparent 70%)}.orb{width:180px;height:180px;border-radius:50%;border:1px solid #bdccb2;position:relative;transform:rotate(-12deg);display:grid;place-items:center}.orb:before,.orb:after{content:'';position:absolute;border:1px solid #bdccb2;border-radius:50%;inset:20px -30px;transform:rotate(55deg)}.orb:after{inset:-25px 30px;transform:rotate(45deg)}.art-book{width:90px;height:108px;background:#73946a;border-radius:7px 16px 16px 7px;box-shadow:8px 8px 0 #b7c5a6;display:grid;place-items:center;color:#f4f7ef;font-size:38px;z-index:1}.float-label{position:absolute;bottom:29px;right:30px;background:#fffffff0;padding:11px 15px;border-radius:10px;box-shadow:0 4px 20px #53644512;font-size:11px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:22px 0 31px}.stat{background:white;border:1px solid var(--line);border-radius:12px;padding:18px 22px;display:flex;align-items:center;gap:15px}.stat-icon{width:43px;height:43px;border-radius:10px;background:#f1f5ed;display:grid;place-items:center;font-size:22px;color:#739266}.stat strong{font-size:24px;display:block}.stat small{font-size:11px;color:var(--muted)}.section-head{display:flex;justify-content:space-between;gap:14px;align-items:center;margin-bottom:20px}.section-head h2{margin:0}.search{border:1px solid var(--line);background:#fff;border-radius:8px;padding:10px 13px;width:210px;outline-color:#87a77e}.filters{display:flex;gap:9px;margin-bottom:20px}.filters button{background:transparent;padding:8px 16px;color:var(--muted);border-radius:7px}.filters button.active{background:var(--ink);color:white}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.card{background:#fff;border:1px solid var(--line);border-radius:13px;overflow:hidden;transition:transform 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div{height:100%;background:#7c9d69}.progress-label{display:flex;justify-content:space-between;font-size:10px;margin:10px 0;color:var(--muted)}.card-action{width:100%;padding:10px;background:#edf4e8;color:var(--green);border-radius:7px;margin-top:15px}.card-action.locked{background:#f5f6f3;color:#8f998e}.footer{display:flex;justify-content:space-between;border-top:1px solid var(--line);margin-top:36px;padding-top:20px;color:#97a193;font-size:10px}.panel{background:white;padding:25px;border:1px solid var(--line);border-radius:14px;margin-bottom:20px}.form{display:grid;grid-template-columns:1fr 1fr;gap:15px}.field{display:grid;gap:6px}.field input,.field select,.field textarea{border:1px solid var(--line);padding:11px;border-radius:8px;background:#fafbf8;width:100%}.form .wide{grid-column:1/-1}.notice{border-radius:9px;background:#f4efdf;padding:13px 16px;color:#85774c;font-size:12px;margin:16px 0}.lesson-layout{display:grid;grid-template-columns:1fr 280px;gap:20px}.player{background:#182c24;border-radius:13px;padding:16px;color:white;overflow:hidden}.player video{width:100%;aspect-ratio:16/9;max-height:500px;background:#12231c;border-radius:7px}.lesson-list{background:white;border:1px solid var(--line);border-radius:13px;padding:15px}.lesson-list button{width:100%;text-align:left;background:none;padding:16px 12px;border-bottom:1px solid var(--line);font-size:12px}.lesson-list button.active{background:#edf4e8;border-radius:8px;color:var(--green)}.back{background:none;color:var(--muted);padding:0;margin:20px 0}.empty{text-align:center;padding:48px;background:white;border:1px dashed #ccd9c5;border-radius:12px;color:var(--muted);grid-column:1/-1}.login{max-width:430px;margin:90px auto;background:white;border:1px solid var(--line);padding:36px;border-radius:20px}.login h1{font-size:25px}.login .btn{width:100%;justify-content:center;margin-top:20px}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:#213a32;color:white;padding:13px 22px;border-radius:10px;box-shadow:0 5px 25px #0002;display:none;z-index:100;max-width:90vw}table{width:100%;border-collapse:collapse;font-size:12px}td,th{text-align:left;padding:13px;border-bottom:1px solid var(--line)}.link-output{word-break:break-all;padding:15px;background:#edf4e8;border-radius:9px;margin-top:15px}.mobile-brand{display:none}@media(min-width:1450px){main{padding:0 65px 40px}.cover{height:190px}}@media(max-width:1050px){main{padding:0 25px 30px}.grid{grid-template-columns:repeat(2,1fr)}.hero h2{font-size:23px}.hero-copy{padding:25px}.sidebar{width:200px}.shell{grid-template-columns:200px 1fr}.lesson-layout{grid-template-columns:1fr}.stat{padding:14px}.stat-icon{display:none}}@media(max-width:680px){.shell{display:block}.sidebar{position:fixed;inset:auto 0 0;width:100%;height:68px;padding:6px;background:#fff;z-index:20;border-top:1px solid var(--line)}.sidebar>.logo,.tagline,.side-bottom{display:none}.nav{display:flex;justify-content:space-around;gap:0}.nav button{padding:7px 12px;font-size:10px;text-align:center}.nav span{display:block;width:auto;font-size:19px}.mobile-brand{display:block;font-size:20px;font-weight:700;letter-spacing:3px}.breadcrumb{display:none}main{padding:0 18px 90px}header{height:69px}.pill{font-size:9px;padding:6px 9px}.heading{padding:25px 0 18px}h1{font-size:25px}.hero{grid-template-columns:1fr;min-height:0}.hero-art{display:none}.hero-copy{padding:23px}.hero h2{font-size:23px}.stats{gap:9px;margin:16px 0 28px}.stat{padding:12px}.stat strong{font-size:22px}.stat small{font-size:9px}.grid{grid-template-columns:1fr}.cover{height:180px}.cover-title{font-size:30px}.section-head{flex-wrap:wrap}.search{width:100%}.form{grid-template-columns:1fr}.form .wide{grid-column:auto}.footer{gap:12px}.tools{gap:7px}.panel{padding:18px}.table-wrap{overflow:auto}}

/* IRISE ocean palette and mobile learning accessibility */
body{background:linear-gradient(135deg,#edf7fa,#f5f7fd 60%,#fff9ee);min-height:100vh}.sidebar{background:linear-gradient(165deg,#153553,#11273e);color:#fff}.tagline,.account small{color:#b5cadb}.logo i{color:#f5c361}.nav button{color:#c3d5e5}.nav button.active{background:#0d847e;color:#fff;box-shadow:0 4px 16px #061d3233}.support{background:#ffffff0d;color:#d4e2ee}.support button{color:#18344f}.avatar{background:#f4c771;color:#18344f}.account button{color:inherit}.hero{background:linear-gradient(120deg,#164565,#087d75);border-color:#1d6c80;color:white;box-shadow:0 12px 32px #123b5514}.hero p,.hero .eyebrow{color:#d0ebed}.hero .btn{background:#f4c66b;color:#18344f;font-weight:700}.hero-art{background:radial-gradient(circle,#50cbb744,transparent 70%)}.orb,.orb:before,.orb:after{border-color:#9ad9cc66}.art-book{background:#f4c66b;box-shadow:8px 8px 0 #d39837;color:#173951}.float-label{color:#18344f}.eyebrow{color:#087d75}.btn{min-height:44px;transition:filter .2s}.btn:hover{filter:brightness(.94)}.btn:disabled{opacity:.55;cursor:default}.pill{background:#e0f3ee;color:#146a59}.stat,.panel,.card,.login{box-shadow:0 6px 24px #15355308}.stat-icon{background:#ddf4ef;color:#087d75}.cover{background:linear-gradient(135deg,#075d63,#18a89b);color:white}.cover.content{background:linear-gradient(135deg,#f4c56a,#ffdf99);color:#543717}.cover.ai{background:linear-gradient(135deg,#42579f,#8576d4);color:white}.cover .category{opacity:1}.cover-symbol,.cover.ai .cover-symbol{color:#fff}.badge{background:#fffffff2;color:#18344f}.progress div{background:linear-gradient(90deg,#0d847e,#36bda3)}.card-action{background:#dff3ee;color:#08685f;min-height:44px;font-weight:600}.card-action.locked{background:#fff1d6;color:#77510f}.field input,.field select,.field textarea{background:#f8fbfe;font-size:16px}.field textarea{min-height:100px}.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid #168b83;outline-offset:1px}.notice{background:#fff2d8;color:#735115}.player{background:#10253e}.player video{background:#071522}.lesson-list button{min-height:48px;overflow-wrap:anywhere}.lesson-list button.active,.link-output{background:#e1f4ef;color:#08685f}.login{border-top:5px solid #0d847e}.login-help{font-size:13px;margin-top:18px}.chapter-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}.chapter-row span{overflow-wrap:anywhere}#toast{background:#18344f}.panel,.card-body{overflow-wrap:anywhere}button:focus-visible,a:focus-visible{outline-color:#e8b44a}
@media(max-width:680px){.sidebar{background:#fff;height:74px}.nav{overflow-x:auto;justify-content:flex-start;gap:5px;scrollbar-width:thin}.nav button{flex:0 0 auto;color:#496075;min-height:48px;min-width:76px}.nav button.active{background:#0d847e;color:white}.login{margin:32px 16px;padding:25px}.heading{gap:12px;flex-wrap:wrap}.chapter-row{flex-wrap:wrap}#toast{bottom:90px}.filters{overflow-x:auto}.filters button{white-space:nowrap;min-height:44px}.player{padding:10px}.lesson-layout{gap:16px}.cover-title{max-width:75%;overflow-wrap:anywhere}.badge{max-width:40%}}