/* Study Text + Practice Kit */
.pk-panel{margin-top:18px}.pk-builder{margin-top:18px}.pk-field>label,.pk-grid>label{font-weight:700}.pk-unit-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px;margin-top:9px}.pk-unit{display:flex;gap:10px;align-items:flex-start;padding:13px;border:1px solid var(--border,#dfe7e2);border-radius:12px;background:#fff;cursor:pointer}.pk-unit span{display:flex;flex-direction:column;gap:3px}.pk-unit b{font-weight:600}.pk-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:18px}.pk-grid label{display:flex;flex-direction:column;gap:7px}.pk-grid small{font-weight:400;color:var(--muted,#68756d)}.pk-grid input,.pk-grid select,.pk-question textarea{width:100%;box-sizing:border-box}.pk-written span{display:flex;align-items:center;gap:7px}.pk-written span input{width:auto}.pk-actions{margin-top:18px}.pk-modal{position:fixed;inset:0;z-index:10000;background:rgba(13,29,21,.62);overflow:auto;padding:28px}.pk-dialog{max-width:860px;margin:auto;background:#fff;border-radius:18px;padding:24px}.pk-dialog-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;position:sticky;top:-28px;background:#fff;padding:8px 0 14px;z-index:2;border-bottom:1px solid #e4ebe7}.pk-dialog-head h2{margin:4px 0}.pk-question{padding:24px 0;border-bottom:1px solid #e4ebe7}.pk-question>span{font-size:12px;font-weight:700;color:#18734a;text-transform:uppercase}.pk-question h3{font-size:17px;line-height:1.5;margin:7px 0 14px}.pk-options{display:grid;gap:9px}.pk-options label{display:block;padding:11px 12px;border:1px solid #dfe7e2;border-radius:10px;cursor:pointer}.pk-submit{padding-top:20px;text-align:right}@media(max-width:760px){.pk-grid{grid-template-columns:1fr}.pk-modal{padding:0}.pk-dialog{min-height:100vh;border-radius:0;padding:18px}.pk-dialog-head{top:-18px}}
/* Native Study Material reader */
.study-panel{margin-top:18px}.study-unit-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px;margin-top:18px}.study-unit-card{border:1px solid #dfe7e2;border-radius:14px;padding:17px;background:#f8faf9;display:flex;align-items:center;justify-content:space-between;gap:16px}.study-unit-card.has-content{background:#fff}.study-unit-card h3{margin:4px 0 5px;font-size:17px}.study-unit-card p{margin:0;color:#68756d;font-size:13px}.study-reader{position:fixed;inset:0;z-index:10020;background:rgba(13,29,21,.68);overflow:auto;padding:24px}.study-reader-dialog{max-width:920px;margin:auto;background:#fff;border-radius:18px;overflow:hidden;box-shadow:0 22px 60px rgba(0,0,0,.22)}.study-reader-head{position:sticky;top:0;z-index:3;background:#fff;border-bottom:1px solid #e2e9e5;padding:18px 26px;display:flex;justify-content:space-between;gap:20px;align-items:center}.study-reader-head h2{margin:4px 0 0}.study-reader-body{font-family:"Times New Roman",Times,serif;padding:34px 48px 42px;font-size:18px;line-height:1.68;color:#18241e}.study-reader-body h1{font-family:inherit;font-size:29px;line-height:1.2;color:#125f3d;text-align:center;margin:0 0 32px;padding-bottom:18px;border-bottom:2px solid #dce9e2}.study-reader-body h2{font-family:inherit;font-size:22px;line-height:1.3;color:#173c2d;margin:30px 0 12px}.study-reader-body p{margin:0 0 14px}.study-reader-body ul{margin:8px 0 20px;padding-left:28px}.study-reader-body li{margin:5px 0}.study-callout{margin:18px 0;padding:15px 18px;border-left:4px solid #18734a;background:#f1f7f4;font-size:18px}.study-flow{text-align:center;font-weight:700;padding:18px;margin:18px 0;background:#f4f8f6;border:1px solid #dbe8e1;border-radius:12px}.study-table-wrap{overflow-x:auto;margin:18px 0 26px}.study-table{width:100%;border-collapse:collapse;font-family:"Times New Roman",Times,serif;font-size:16px}.study-table th,.study-table td{border:1px solid #cfd9d3;padding:10px 12px;vertical-align:top;text-align:left}.study-table th{background:#eaf3ee;color:#143c2c;font-weight:700}.study-table tr:nth-child(even) td{background:#fafcfb}.study-process{display:grid;justify-items:center;gap:7px;margin:20px auto;max-width:600px}.study-process div{width:100%;box-sizing:border-box;text-align:center;padding:12px 16px;border:1px solid #cfe0d7;border-radius:10px;background:#f5f9f7;font-weight:600}.study-process span{color:#18734a;font-weight:700}.study-reader-foot{position:sticky;bottom:0;background:#f8faf9;border-top:1px solid #e2e9e5;padding:14px 26px;display:flex;justify-content:space-between;align-items:center;gap:18px}.study-reader-foot span{font-size:12px;color:#68756d}
@media(max-width:760px){.study-reader{padding:0}.study-reader-dialog{min-height:100vh;border-radius:0}.study-reader-head{padding:14px 16px}.study-reader-body{padding:24px 18px 34px;font-size:17px}.study-reader-body h1{font-size:24px}.study-reader-body h2{font-size:20px}.study-reader-foot{padding:12px 16px;align-items:stretch;flex-direction:column}.study-unit-card{align-items:stretch;flex-direction:column}}

/* Personalized anti-piracy watermark for protected Study Text */
.protected-study{position:relative;isolation:isolate;overflow:hidden}.study-content-layer{position:relative;z-index:2}.study-watermark{position:absolute;z-index:1;inset:-140px -180px;display:grid;grid-template-columns:repeat(4,minmax(260px,1fr));grid-auto-rows:170px;gap:34px 58px;transform:rotate(-24deg);transform-origin:center;pointer-events:none;user-select:none;overflow:hidden}.study-watermark-item{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:rgba(20,105,69,.115);font-family:Arial,sans-serif;font-size:13px;line-height:1.35;white-space:nowrap}.study-watermark-item b{font-size:15px}.study-watermark-item span{display:block}.study-content-layer .study-callout,.study-content-layer .study-flow,.study-content-layer .study-process div,.study-content-layer .study-table th,.study-content-layer .study-table td{background-color:rgba(255,255,255,.82)}
@media(max-width:760px){.study-watermark{grid-template-columns:repeat(3,minmax(220px,1fr));grid-auto-rows:150px;gap:25px 38px}.study-watermark-item{font-size:11px}.study-watermark-item b{font-size:13px}}
@media print{.study-watermark{position:fixed;inset:-100px}.study-reader-head,.study-reader-foot{display:none!important}}