/* V8: scoped to the student portal. Premium global branding is not replaced. */
body[data-student-workspace="v8"]{--st-ink:#173d4a;--st-muted:#4c6570;--st-line:#cbdedb;--st-teal:#086c73;--st-mint:#ecf6f0;--st-lilac:#f1eff9;--st-sand:#fcf5e8}
body[data-student-workspace="v8"] #view-simulations,body[data-student-workspace="v8"] #view-account,#rzStudentLegacyLearning[hidden]{display:none!important}
body[data-student-workspace="v8"] #mainNav #rzHiddenLibraryNav{position:static!important;width:auto!important;height:auto!important;clip-path:none!important;pointer-events:auto!important;overflow:visible!important}
.rz-st-icon{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;width:24px;height:24px;color:inherit}.rz-st-icon svg{width:100%;height:100%}
.rz-st-heading{display:flex;align-items:flex-start;gap:16px;margin:4px 0 26px;color:var(--st-ink)}.rz-st-heading>.rz-st-icon{width:46px;height:46px;border:1px solid #c4dcd4;background:var(--st-mint);padding:10px;border-radius:15px}
.rz-st-heading>div{flex:1;min-width:0}.rz-st-heading h1{font-size:clamp(1.65rem,3vw,2.3rem);line-height:1.2;letter-spacing:-.045em;margin:6px 0 10px;font-weight:750;color:var(--st-ink)}.rz-st-heading p{max-width:750px;color:var(--st-muted);font-size:.9rem;line-height:1.65;margin:0}.rz-st-eyebrow{font-size:.64rem;letter-spacing:.14em;font-weight:800;color:#46646d;text-transform:uppercase}
.rz-st-button{min-height:42px;display:inline-flex;gap:9px;align-items:center;justify-content:center;background:var(--st-teal);color:white;border:1px solid var(--st-teal);border-radius:11px;padding:10px 16px;font:inherit;font-size:.8rem;font-weight:720;cursor:pointer;transition:transform .18s ease,background .18s ease,box-shadow .18s ease;text-decoration:none}.rz-st-button .rz-st-icon{width:17px;height:17px}.rz-st-button:hover:not(:disabled){background:#075a60;transform:translateY(-1px);box-shadow:0 6px 18px #164f5520}.rz-st-button.secondary{background:#fff;color:#175563;border-color:#aecdc5}.rz-st-button.secondary:hover{background:#e8f3ed}.rz-st-button.quiet{background:#fff;color:#385763;border-color:#d1dfdf}.rz-st-button:disabled{opacity:.48;cursor:not-allowed;box-shadow:none;transform:none}
.rz-st-button:focus-visible,.rz-st-filter:focus-visible,.rz-st-close:focus-visible,.rz-st-history-tools input:focus-visible,.rz-st-event-detail summary:focus-visible{outline:3px solid #98732c;outline-offset:3px}
.rz-st-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:310px;padding:36px 24px;text-align:center;background:linear-gradient(135deg,#f1f8f3,#f4f1fb);border:1px solid #ccdfd7;border-radius:22px;color:var(--st-ink);box-shadow:0 10px 28px #183f4710}.rz-st-empty>.rz-st-icon{width:76px;height:76px;padding:18px;background:white;border:1px solid #bad9cc;border-radius:24px;margin-bottom:17px;box-shadow:0 8px 20px #164f550d;color:#28775f}.rz-st-empty h2{font-size:1.45rem;line-height:1.25;letter-spacing:-.035em;margin:2px 0 12px}.rz-st-empty p{font-size:.9rem;line-height:1.7;color:var(--st-muted);max-width:570px;margin:0 0 18px}.rz-st-empty.success{background:linear-gradient(135deg,#e9f5ed,#f8f7e9)}.rz-st-empty.warning{background:#fff8ea;border-color:#dbcba6}
.rz-st-badge{display:inline-flex;border:1px solid #c8d4dd;background:#eff3f6;color:#405e70;border-radius:30px;padding:5px 10px;font-size:.67rem;font-weight:750;white-space:nowrap}.rz-st-badge.open{background:#e4f3ea;border-color:#afcfba;color:#225d43}.rz-st-badge.submitted{background:#e7eff8;border-color:#bdd0e4;color:#2b526e}.rz-st-badge.scheduled{background:#fbf0d6;border-color:#dece9b;color:#735a16}.rz-st-badge.closed{background:#f2eded;border-color:#dbc8c8;color:#74504f}
.rz-st-practice-list{display:grid;gap:16px}.rz-st-practice-card{display:grid;grid-template-columns:minmax(0,1fr) 210px auto;align-items:center;gap:28px;border:1px solid #c3dcd0;border-radius:20px;background:#f0f7f2;padding:24px;box-shadow:0 6px 22px #183f4708}.rz-st-practice-card:nth-child(even){background:var(--st-lilac);border-color:#d5cee6}.rz-st-practice-copy h2{margin:12px 0 6px;font-size:1.16rem;line-height:1.35;color:var(--st-ink)}.rz-st-practice-copy p{margin:0 0 8px;color:var(--st-muted);font-size:.85rem}.rz-st-timing{display:flex;flex-direction:column;gap:8px;align-items:flex-start;border-left:1px solid #c5d8d2;padding-left:22px}.rz-st-countdown{font-size:1.14rem;font-variant-numeric:tabular-nums;letter-spacing:.01em;color:#254c55}.rz-st-meta{font-size:.73rem;line-height:1.6;color:#4b6570;display:block;overflow-wrap:anywhere}.rz-st-meter{height:5px;border-radius:8px;background:#d7e3df;overflow:hidden;margin-top:14px;max-width:440px}.rz-st-meter span{display:block;height:100%;background:#2d8075;border-radius:8px}.rz-st-support{font-size:.82rem;line-height:1.7;color:var(--st-muted);margin:22px 0}.rz-st-archive{border:1px solid var(--st-line);border-radius:14px;margin-top:26px;background:#fff;padding:17px 20px}.rz-st-archive>summary,.rz-st-readings>summary{cursor:pointer;color:var(--st-ink);font-weight:730;font-size:.85rem}.rz-st-archive-row{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid #e4eaea;padding:16px 0;font-size:.8rem;color:var(--st-muted)}.rz-st-archive-row:first-of-type{margin-top:14px}
.rz-st-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:0 0 24px}.rz-st-summary>div{border-radius:16px;background:var(--st-mint);border:1px solid #c8ddd1;padding:18px 22px;display:flex;align-items:center;gap:15px}.rz-st-summary>div:nth-child(2){background:var(--st-sand);border-color:#e1d6bb}.rz-st-summary>div:nth-child(3){background:var(--st-lilac);border-color:#d7cfe6}.rz-st-summary strong{font-size:1.8rem;color:var(--st-ink);line-height:1}.rz-st-summary span{font-size:.77rem;color:var(--st-muted)}
.rz-st-history-tools{display:flex;gap:16px;align-items:center;justify-content:space-between;margin-bottom:22px;flex-wrap:wrap}.rz-st-history-tools input{min-height:44px;max-width:440px;width:100%;border:1px solid #bed4d1;background:#fff;border-radius:12px;padding:11px 14px;font:inherit;font-size:.82rem;color:var(--st-ink)}.rz-st-filters{display:flex;gap:6px;flex-wrap:wrap}.rz-st-filter{font:inherit;font-size:.74rem;border:1px solid #c9dad7;border-radius:22px;padding:9px 14px;background:#fff;color:#4c646c;cursor:pointer}.rz-st-filter[aria-pressed=true]{background:#e0efe8;border-color:#92bbaa;color:#174e41;font-weight:750}
.rz-st-timeline{display:grid;gap:14px}.rz-st-history-card{display:flex;align-items:flex-start;gap:17px;padding:22px 24px;border:1px solid #d2dfdc;border-radius:18px;background:#fff;box-shadow:0 5px 18px #173e4c06}.rz-st-history-card>.rz-st-icon{padding:8px;width:40px;height:40px;background:#ebf4ef;border-radius:12px;color:#356d5c}.rz-st-history-main{min-width:0;flex:1}.rz-st-history-top{display:flex;gap:12px;align-items:center;justify-content:space-between}.rz-st-history-top h2{font-size:1.05rem;line-height:1.4;color:var(--st-ink);margin:0}.rz-st-history-main p{font-size:.82rem;color:var(--st-muted);margin:5px 0}.rz-st-history-bottom{margin-top:10px}.rz-st-history-main>.rz-st-button{margin-top:12px}.rz-st-event-detail{margin-top:13px;color:var(--st-muted);font-size:.76rem}.rz-st-event-detail summary{cursor:pointer;max-width:max-content;color:#386371;font-weight:650}.rz-st-event-detail>div{display:flex;align-items:center;gap:18px;padding:8px 0;border-top:1px solid #e8efec;max-width:600px}.rz-st-event-detail>div:first-of-type{margin-top:12px}.rz-st-event-detail strong{min-width:110px}
.rz-st-library-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(290px,100%),1fr));gap:18px}.rz-st-library-card{display:flex;flex-direction:column;align-items:flex-start;padding:24px;border:1px solid #cbded6;border-radius:19px;background:#eff6f1;gap:10px}.rz-st-library-card:nth-child(even){background:var(--st-lilac)}.rz-st-library-card>.rz-st-icon{height:38px;width:38px;padding:8px;border:1px solid #c2d6ca;border-radius:11px;background:#fff;color:#275f56}.rz-st-library-card h2{font-size:1.15rem;color:var(--st-ink);margin:5px 0 0}.rz-st-library-card p{font-size:.83rem;color:var(--st-muted);margin:0}.rz-st-library-card .rz-st-button{margin-top:10px}
.rz-st-materials{margin-top:32px}.rz-st-section-title{display:flex;gap:11px;align-items:center;color:var(--st-ink);margin-bottom:16px}.rz-st-section-title h2{font-size:1.12rem;margin:0}.rz-st-resource-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(310px,100%),1fr));gap:14px}.rz-st-resource-card{display:flex;align-items:flex-start;gap:13px;flex-wrap:wrap;padding:20px;background:#fbf6eb;border:1px solid #ded3b9;border-radius:16px}.rz-st-resource-card>div{flex:1;min-width:150px}.rz-st-resource-card h3{font-size:.97rem;color:var(--st-ink);margin:0 0 6px}.rz-st-resource-card p{font-size:.79rem;color:var(--st-muted);line-height:1.6;margin:0 0 7px}.rz-st-resource-card>.rz-st-icon{color:#876c30}.rz-st-readings{margin-top:28px;border:1px solid #cfdbdc;border-radius:16px;background:#fff;padding:20px}.rz-st-readings[open]>.rz-library-grid{margin-top:24px}
/* Retain event-bound Player DOM, improve its visible presentation only. */
body[data-student-workspace="v8"] #view-player .student-heading{display:block;position:relative;padding-left:65px;margin-bottom:26px}body[data-student-workspace="v8"] #view-player .student-heading>.rz-st-icon{position:absolute;top:4px;left:0}body[data-student-workspace="v8"] #view-player .student-heading h1{font-size:2.05rem;margin:8px 0}body[data-student-workspace="v8"] #view-player .student-heading p{max-width:780px}
body[data-student-workspace="v8"] .player-layout{gap:24px;align-items:start}body[data-student-workspace="v8"] .player-entry{background:#edf6ef;border:1px solid #bdd7c9;border-radius:22px;box-shadow:0 10px 30px #153a4a0b;color:var(--st-ink);padding:28px}body[data-student-workspace="v8"] .player-entry>.rz-st-icon{height:43px;width:43px;padding:9px;border-radius:13px;background:#fff;color:#2e7363;margin-bottom:18px}body[data-student-workspace="v8"] .player-entry h2{color:var(--st-ink);font-size:1.45rem}body[data-student-workspace="v8"] .player-entry p{color:var(--st-muted);font-size:.86rem;line-height:1.7}body[data-student-workspace="v8"] .code-input{background:#fff;border:1px solid #acc6bc;color:#143f4a;border-radius:12px;min-width:0;font-size:1.18rem;letter-spacing:.17em}body[data-student-workspace="v8"] .find-class-button{background:var(--st-teal);color:#fff;border-radius:12px}body[data-student-workspace="v8"] .player-entry-label{color:#406959}.rz-st-player-hint{display:flex;gap:9px;border-top:1px solid #c8dcd2;margin-top:23px;padding-top:15px}.rz-st-player-hint>.rz-st-icon{width:18px;height:18px;color:#5b7c6e}.rz-st-player-hint p{font-size:.73rem!important;margin:0!important}
body[data-student-workspace="v8"] .session-card{border-radius:22px;background:#fff;border:1px solid #cbcfe3;box-shadow:0 10px 30px #153a4a0b;overflow:hidden}body[data-student-workspace="v8"] .session-hero{background:#eeedf8;color:#243d54;padding:25px}body[data-student-workspace="v8"] .session-hero h2{color:#253e55;font-size:1.38rem}body[data-student-workspace="v8"] .session-hero p,body[data-student-workspace="v8"] .session-kicker{color:#586381}body[data-student-workspace="v8"] .session-body{padding:25px}body[data-student-workspace="v8"] .session-window{background:#f5f7fa;border:1px solid #dbe1e8;border-radius:12px;color:#41596c}body[data-student-workspace="v8"] .launch-ready{background:#edf6ef;border:1px solid #bfdcc8;border-radius:14px;color:#285743}body[data-student-workspace="v8"] .launch-ready strong{color:#26513d}body[data-student-workspace="v8"] .session-card .empty-state{padding:50px 24px;background:#f6f4fb}body[data-student-workspace="v8"] .session-card .empty-state-icon{color:#61528a;background:#e8e3f4}
.rz-st-dialog{max-width:min(500px,calc(100vw - 30px));width:100%;border:1px solid #bfd8ce;border-radius:22px;background:#fcfefa;color:var(--st-ink);padding:32px;box-shadow:0 24px 80px #102e4150;box-sizing:border-box}.rz-st-dialog::backdrop{background:#102d4166;backdrop-filter:blur(4px)}.rz-st-dialog>h2{font-size:1.3rem;margin:16px 0 10px;padding-right:30px;color:#173d4a}.rz-st-dialog>p{font-size:.88rem;line-height:1.7;color:#4c6570}.rz-st-dialog>.rz-st-icon{width:44px;height:44px;border-radius:13px;background:#ecf4ef;padding:10px;color:#467260}.rz-st-close{position:absolute;right:15px;top:15px;width:36px;height:36px;border:1px solid #cadbd5;border-radius:50%;background:white;color:#355c67;display:flex;align-items:center;justify-content:center;cursor:pointer}.rz-st-close .rz-st-icon{width:17px;height:17px}.rz-st-account{max-width:min(760px,calc(100vw - 30px));max-height:85dvh;overflow:auto}.rz-st-account>.content-shell{padding:20px 0 0!important;width:auto!important}.rz-st-account .student-heading h1{font-size:1.6rem}.rz-st-history-entry{margin-top:12px}
@media(max-width:850px){.rz-st-practice-card{grid-template-columns:minmax(0,1fr) 185px;gap:18px}.rz-st-practice-card>.rz-st-button{grid-column:1/-1;justify-self:start}.rz-st-summary>div{padding:16px;gap:10px}}
@media(max-width:600px){.rz-st-heading{gap:12px;flex-wrap:wrap}.rz-st-heading>div{flex-basis:calc(100% - 65px)}.rz-st-heading>.rz-st-button{margin-left:58px}.rz-st-summary{gap:8px}.rz-st-summary>div{flex-direction:column;align-items:flex-start;padding:14px 11px}.rz-st-summary strong{font-size:1.5rem}.rz-st-summary span{font-size:.66rem}.rz-st-practice-card{grid-template-columns:1fr;padding:21px}.rz-st-timing{border-left:0;border-top:1px solid #cfdbd4;padding:14px 0 0}.rz-st-practice-card>.rz-st-button{justify-self:stretch}.rz-st-history-card{padding:18px 15px;gap:10px}.rz-st-history-top{align-items:flex-start;flex-direction:column;gap:7px}.rz-st-history-top h2{font-size:1rem}.rz-st-archive-row{align-items:flex-start;flex-direction:column}.rz-st-event-detail>div{flex-direction:column;align-items:flex-start;gap:3px}.rz-st-empty{padding:30px 20px}.rz-st-empty h2{font-size:1.3rem}body[data-student-workspace="v8"] .player-entry,body[data-student-workspace="v8"] .session-body{padding:22px}body[data-student-workspace="v8"] .code-row{flex-wrap:wrap}body[data-student-workspace="v8"] .find-class-button{min-height:44px}body[data-student-workspace="v8"] #view-player .student-heading h1{font-size:1.7rem}}
@media(prefers-reduced-motion:reduce){.rz-st-button{transition:none;transform:none!important}}


/* V9: premium, bounded Practice launch confirmation. Never navigates via Player. */
.rz-st-launch-dialog{max-width:min(610px,calc(100vw - 26px));padding:34px 36px;background:linear-gradient(146deg,#f7fcfa 0%,#fff 62%,#f7f6fc 100%);border-color:#b5d9ce;box-shadow:0 28px 95px #11394555;max-height:calc(100dvh - 34px);overflow:auto}
.rz-st-launch-header{display:flex;gap:16px;align-items:flex-start;margin-right:22px}
.rz-st-launch-mark{display:flex;align-items:center;justify-content:center;width:54px;height:54px;min-width:54px;padding:14px;border-radius:17px;background:#e0f4ee;border:1px solid #b5d9ca;color:#167a72}
.rz-st-launch-mark svg{width:100%;height:100%}
.rz-st-launch-header h2{font-size:clamp(1.24rem,2.6vw,1.55rem);letter-spacing:-.026em;line-height:1.28;margin:12px 0 8px;color:#173b48}
.rz-st-launch-header p{font-size:.85rem;line-height:1.6;color:#506b75;margin:0}
.rz-st-launch-details{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:25px}
.rz-st-launch-details>div{padding:14px 16px;border:1px solid #d1e3dd;border-radius:14px;background:#f0f7f3;min-width:0}
.rz-st-launch-details>div:nth-child(even){background:#f5f2fa;border-color:#e2dbee}
.rz-st-launch-details span{display:block;color:#58727c;font-size:.63rem;letter-spacing:.09em;font-weight:800;margin-bottom:6px}
.rz-st-launch-details strong{font-size:.88rem;line-height:1.45;color:#1f4751;overflow-wrap:anywhere}
.rz-st-launch-countdown{display:flex;gap:8px;align-items:center;background:#e5f3eb;border:1px solid #c2dccb;border-radius:12px;color:#2d6752;padding:12px 15px;margin:17px 0 13px;font-size:.85rem;flex-wrap:wrap}
.rz-st-launch-countdown .rz-st-icon{width:19px;height:19px;flex-shrink:0}
.rz-st-launch-countdown strong{font-variant-numeric:tabular-nums}
.rz-st-launch-note{font-size:.79rem;line-height:1.6;color:#647984;margin:0 0 15px}
.rz-st-launch-feedback{padding:11px 13px;border:1px solid #e8bfb5;border-radius:12px;background:#fff5f2;color:#903c35;line-height:1.55;font-size:.82rem}
.rz-st-launch-feedback[hidden]{display:none}
.rz-st-launch-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:22px;flex-wrap:wrap}
.rz-st-launch-actions .rz-st-button{min-height:45px;justify-content:center}
.rz-st-launch-actions .rz-st-button.quiet{background:#fff;border-color:#bfd1d3;color:#385867}
.rz-st-launch-dialog :is(button,a):focus-visible{outline:3px solid #1c8792;outline-offset:3px}
@media(max-width:600px){.rz-st-launch-dialog{padding:26px 20px}.rz-st-launch-header{gap:11px}.rz-st-launch-mark{width:42px;height:42px;min-width:42px;padding:10px}.rz-st-launch-details{grid-template-columns:1fr;gap:9px}.rz-st-launch-actions{flex-direction:column-reverse}.rz-st-launch-actions .rz-st-button{width:100%}}
@media(prefers-reduced-motion:reduce){.rz-st-launch-dialog *{animation:none!important;transition:none!important}}