.mr6-phy{--ink:#183c64;--muted:#586c82;max-width:1060px;margin:0 auto;color:var(--ink);font-family:Arial,sans-serif;font-size:18px;line-height:1.65;padding:24px;box-sizing:border-box}.mr6-phy *{box-sizing:border-box}.mr6-phy h1,.mr6-phy h2,.mr6-phy h3{color:var(--ink)!important;line-height:1.25}.mr6-phy h1{font-size:clamp(28px,4vw,44px);margin:14px 0}.mr6-phy h2{font-size:28px}.mr6-phy h3{font-size:23px}.mr6-phy p{margin:14px 0}.phy-hero{padding:36px;border:1px solid #d5e0ea;border-radius:24px;background:linear-gradient(110deg,#f5f8fa,#fffaed)}.phy-kicker{color:#94600c;font-size:13px;letter-spacing:.14em;font-weight:700;text-transform:uppercase}.mr6-phy section{margin:32px 0}.mr6-phy a{color:var(--ink);font-weight:700}.phy-back{display:inline-block;margin-bottom:20px}.phy-index,.phy-activity,.phy-check{padding:22px;border:1px solid #d9e2eb;border-radius:16px;background:#faf9f5}.mr6-phy summary{cursor:pointer;font-weight:700;padding:12px 0}.mr6-phy summary:focus-visible,.mr6-phy button:focus-visible,.mr6-phy a:focus-visible{outline:3px solid #ad720f;outline-offset:4px}.phy-table-wrap{overflow-x:auto;max-width:100%}.mr6-phy table{border-collapse:collapse;width:100%;font-size:16px;background:white}.mr6-phy th,.mr6-phy td{text-align:left;vertical-align:top;padding:14px;border:1px solid #dce3e9}.mr6-phy th{background:#f4f3ee}.phy-question{padding:22px;margin:20px 0;border:1px solid #d9e2eb;border-radius:16px;background:#fff}.mr6-phy .mr6-worked-answer{font-family:PhysicsHand,'Comic Sans MS',cursive;font-size:27px;line-height:1.5;color:#193b62;background:#fffdf6;border-left:3px solid #d6ad55;padding:16px 20px;margin-top:10px}.mr6-phy .mr6-worked-answer p{margin:12px 0}.phy-step{display:grid;grid-template-columns:26px minmax(0,1fr);gap:10px;margin:14px 0}.phy-step-label{font-family:Arial,sans-serif;font-size:14px;color:#6b6f77;padding-top:9px}.phy-options{display:grid;gap:10px;margin:16px 0}.phy-options button{display:flex;gap:12px;text-align:left;width:100%;padding:14px;border:1px solid #c9d7e4;border-radius:10px;background:#fff;color:#183c64;font:inherit;cursor:pointer}.phy-options button:hover{background:#faf8f1}.phy-options button.correct{background:#eaf7ee;border:2px solid #23834b;color:#155d31}.phy-options button.incorrect{background:#fff0f0;border:2px solid #be3842;color:#8a1b28}.phy-feedback{margin-top:14px}.phy-feedback strong{display:block}.phy-feedback.bad strong{color:#a32934}.phy-feedback.good strong{color:#18713c}.phy-options .status-icon{margin-left:auto;font-weight:bold}.phy-diagram{margin:28px 0;background:white;border:1px solid #dce3e9;border-radius:16px;padding:18px;overflow-x:auto}.phy-diagram svg{display:block;width:100%;height:auto;min-width:540px}.phy-diagram text{fill:#183c64;stroke:none;font:19px Arial,sans-serif}.phy-diagram figcaption,.phy-source{font-size:14px;color:#566576;margin-top:12px}.phy-question img{max-width:100%;height:auto;display:block;margin:20px auto}.phy-fraction{display:inline-flex;flex-direction:column;vertical-align:middle;text-align:center;line-height:1.2;padding:0 5px;margin:4px}.phy-fraction span:first-child{border-bottom:1.5px solid currentColor;padding:0 5px 3px}.phy-fraction span:last-child{padding:3px 5px 0}.phy-part{display:grid;grid-template-columns:36px minmax(0,1fr);gap:8px}.phy-part.roman{margin-left:42px}.phy-part .part-label{font-weight:600}.phy-home-topic{margin:16px 0;border:1px solid #dce3e9;border-radius:16px;padding:14px 22px}.phy-home-topic ol{padding-left:24px}.phy-home-topic li{margin:12px 0}.phy-score{padding:16px;background:#f8f5eb;border-radius:12px}.phy-assess-actions{display:flex;flex-wrap:wrap;gap:12px}.phy-reset{background:white;border:1px solid #b6c4d0;padding:12px 18px;border-radius:10px;color:#183c64;font:inherit;cursor:pointer}.mr6-phy ul,.mr6-phy ol{padding-left:25px}.mr6-phy [hidden]{display:none!important}
@media(max-width:767px){.mr6-phy{padding:16px;font-size:17px}.phy-hero{padding:24px}.mr6-phy h2{font-size:25px}.mr6-phy h3{font-size:21px}.phy-question,.phy-activity,.phy-index,.phy-check{padding:16px}.mr6-phy .mr6-worked-answer{font-size:25px;padding:14px}.phy-table-wrap table{min-width:550px}.phy-part.roman{margin-left:24px}.phy-part{grid-template-columns:32px minmax(0,1fr)}.phy-diagram{padding:10px}.phy-home-topic{padding:12px 16px}}
.mr6-phy-classroom .mr6-modern-footer{display:none!important}
.mr6-phy-classroom .tutor-course-details-content:has(.mr6-phy)>h2{display:none!important}
.mr6-phy-classroom .phy-course-overview{padding:0;max-width:none}
.mr6-phy-classroom .tutor-course-content-title{color:#183c64!important}
.mr6-phy-classroom .tutor-course-content-list-item-title a{color:inherit;text-decoration:none}
.mr6-phy-classroom .tutor-course-content-list-item-title a:focus-visible{outline:3px solid #ad720f;outline-offset:4px}
.mr6-phy .mr6-worked-answer{font-family:"Comic Sans MS","Segoe Print","Bradley Hand",cursive}

.phy-lesson-nav{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;padding:24px 0;border-top:1px solid #dce3e9;margin-top:32px}.phy-lesson-nav a{display:block;padding:12px 18px;border:1px solid #dce3e9;border-radius:12px;background:#faf8f1}.mr6-phy{overflow-wrap:anywhere}.phy-step>div{min-width:0}





.phy-formulas{padding:20px;border:1px solid #d9e2eb;border-radius:16px;background:#fffdf6}.phy-formulas p{font-family:"Comic Sans MS","Segoe Print","Bradley Hand",cursive;font-size:24px}.phy-diagram text{font-size:17px}.phy-diagram svg{min-width:620px}.phy-options button>span:not(.status-icon){min-width:0}.phy-lesson-nav a{min-height:44px}



/* Form 1 audit presentation */
@font-face{font-family:MR6Form1Hand;src:url('assets/ComicNeue-Regular.ttf') format('truetype');font-display:swap;font-weight:400;font-style:normal}
.mr6-phy{--mr6-answer-hand:MR6Form1Hand,'Comic Sans MS','Segoe Print',Arial,sans-serif}
.mr6-phy .mr6-worked-answer,.mr6-phy .phy-formulas p,.mr6-phy .english-model p{font-family:var(--mr6-answer-hand);font-size:clamp(20px,2.1vw,25px);line-height:1.65}
.mr6-phy .phy-step>div{min-width:0}.mr6-phy .phy-part.roman{margin-left:42px}
.mr6-phy .f1-nuclide{display:inline-grid;grid-template-columns:auto auto;grid-template-rows:auto auto;column-gap:.12em;vertical-align:middle;line-height:1.05;text-align:right;margin:0 .12em}
.mr6-phy .f1-nuclide .mass-number{grid-column:1;grid-row:1;font-size:.7em}.mr6-phy .f1-nuclide .atomic-number{grid-column:1;grid-row:2;font-size:.7em}.mr6-phy .f1-nuclide .element{grid-column:2;grid-row:1/3;align-self:center}
.mr6-phy .phy-fraction{max-width:100%;white-space:normal;overflow-wrap:anywhere}.mr6-phy .phy-fraction>span{max-width:100%;white-space:normal}.mr6-phy .phy-table-wrap{overscroll-behavior-x:contain}
@media(max-width:480px){.mr6-phy .mr6-worked-answer{padding:12px 13px}.mr6-phy .phy-part.roman{margin-left:30px}.mr6-phy .phy-part{grid-template-columns:30px minmax(0,1fr);gap:6px}}
/* End Form 1 audit presentation */