.internal-reader-shell{max-width:1120px}.internal-reader-card{position:relative;overflow:hidden;margin-top:2rem;border:1px solid #ded8ca;border-radius:26px;background:#fff;box-shadow:0 16px 40px rgba(4,17,48,.06)}.internal-reader-header,.internal-reader-footer{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1.25rem 2rem;background:#06112d;color:#fff}.internal-reader-header img{width:58px;height:58px;object-fit:contain}.internal-reader-header div{display:flex;flex:1;flex-direction:column}.internal-reader-header strong{font-size:1.05rem}.internal-reader-header span,.internal-reader-footer{font-size:.82rem;opacity:.88}.internal-reader-body{position:relative;z-index:1;padding:3rem 4rem}.internal-reader-body h1{margin:.4rem 0 2rem}.study-content{font-family:Georgia,'Times New Roman',serif;font-size:1.16rem;line-height:1.9;white-space:normal;color:#172039}.reader-watermark{position:absolute;z-index:0;top:50%;left:50%;width:120%;transform:translate(-50%,-50%) rotate(-28deg);color:rgba(6,17,45,.045);font-size:2rem;font-weight:700;text-align:center;pointer-events:none;user-select:none}.reader-empty-state,.material-credit{margin-top:2rem;padding:1.4rem;border-radius:18px;background:#f7f3e9}.reader-empty-state p,.material-credit p{margin:.45rem 0;color:#657089}.material-credit{border-left:4px solid #b88412}.internal-reader-footer{flex-wrap:wrap}.internal-reader-card{-webkit-user-select:none;user-select:none}@media print{body{display:none!important}}@media(max-width:760px){.internal-reader-body{padding:2rem 1.25rem}.internal-reader-header,.internal-reader-footer{padding:1rem 1.25rem;align-items:flex-start;flex-direction:column}.reader-watermark{font-size:1.15rem}}