:root{--color-canvas:#f5f7fa;--color-surface:#fff;--color-surface-raised:#fff;--color-surface-subtle:#edf2f6;--color-border-subtle:#dce3ea;--color-border-strong:#b9c4cf;--color-ink:#17212b;--color-muted:#5f6b78;--color-brand:#bb2f32;--color-brand-hover:#8f2024;--color-focus:#14798c;--color-success:#1f8a5b;--color-warning:#a76114;--color-danger:#b42318;--color-info:#1f6fb2;--color-status-neutral:#607080;--radius-sm:6px;--radius-md:8px;--shadow-sm:0 1px 2px #141f2b0f;--shadow-md:0 8px 24px #141f2b14;--space-2:8px;--space-3:12px;--space-4:16px;--space-6:24px;--space-8:32px;--background:var(--color-canvas);--surface:var(--color-surface);--surface-muted:var(--color-surface-subtle);--border:var(--color-border-subtle);--text:var(--color-ink);--muted:var(--color-muted);--accent:var(--color-brand);--accent-dark:var(--color-brand-hover);--focus:var(--color-focus);--success:var(--color-success);--warning:var(--color-warning);--danger:var(--color-danger);--status-neutral:var(--color-status-neutral)}*{box-sizing:border-box}html,body{min-height:100%}body{background:var(--background);color:var(--text);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}:where(a,button,input,select,textarea):focus-visible{outline:3px solid color-mix(in srgb, var(--color-focus) 35%, transparent);outline-offset:2px}.app-shell{grid-template-rows:auto 1fr auto;min-height:100vh;display:grid}.app-shell-topbar{align-items:center;gap:var(--space-6);border-bottom:1px solid var(--color-border-subtle);background:var(--color-surface);grid-template-columns:auto minmax(0,1fr) auto;padding:14px 28px;display:grid}.app-shell:not(.student-app-shell) .app-shell-topbar{background:#fffffff5;box-shadow:0 1px #141f2b08}.app-shell:not(.student-app-shell) .app-shell-nav-link[aria-current=page]{background:color-mix(in srgb, var(--color-focus) 12%, white);color:#0d6678}.app-shell-brand{color:var(--color-ink);align-items:center;gap:10px;font-weight:800;display:flex}.app-shell-brand:hover{color:var(--color-brand-hover)}.app-shell-brand-mark{background:var(--color-brand);color:#fff;border-radius:7px;place-items:center;width:34px;height:34px;font-size:.82rem;font-weight:850;display:grid}.app-shell-nav{justify-content:center;gap:var(--space-2);flex-wrap:wrap;min-width:0;display:flex}.app-shell-nav-link{border-radius:var(--radius-sm);min-height:38px;color:var(--color-muted);white-space:nowrap;align-items:center;padding:7px 10px;font-size:.94rem;font-weight:750;display:inline-flex}.app-shell-nav-link:hover{background:var(--color-surface-subtle);color:var(--color-ink)}.app-shell-nav-link[aria-current=page]{background:color-mix(in srgb, var(--color-focus) 10%, white);color:var(--color-focus);box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--color-focus) 24%, white)}.app-shell-session{justify-content:flex-end;align-items:center;gap:var(--space-3);min-width:0;display:flex}.app-shell-identity{justify-items:end;gap:2px;min-width:0;display:grid}.app-shell-identity-primary,.app-shell-identity-secondary{text-overflow:ellipsis;white-space:nowrap;max-width:180px;overflow:hidden}.app-shell-identity-primary{color:var(--color-ink);font-size:.9rem;font-weight:800}.app-shell-identity-secondary{color:var(--color-muted);font-size:.78rem;font-weight:700}.app-shell-role-label{border:1px solid var(--color-border-subtle);background:var(--color-surface-subtle);min-height:26px;color:var(--color-muted);border-radius:999px;align-items:center;padding:4px 10px;font-size:.78rem;font-weight:800;display:inline-flex}.app-shell-footer{border-top:1px solid var(--color-border-subtle);background:var(--color-surface);color:var(--color-muted);text-align:center;align-self:end;padding:14px 28px;font-size:.82rem;font-weight:750}.topbar{border-bottom:1px solid var(--border);background:var(--surface);justify-content:space-between;align-items:center;gap:24px;padding:14px 28px;display:flex}.brand{align-items:center;gap:10px;font-weight:750;display:flex}.brand-mark{background:var(--accent);color:#fff;border-radius:7px;place-items:center;width:34px;height:34px;font-size:.82rem;display:grid}.nav{color:var(--muted);flex-wrap:wrap;gap:12px;font-size:.94rem;display:flex}.nav a{border-radius:6px;padding:7px 9px}.nav a:hover{background:var(--surface-muted);color:var(--text)}.page{width:min(1180px,100% - 36px);margin:0 auto;padding:32px 0 56px}.page-header{justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:24px;display:flex}.page-header-content{gap:var(--space-2);max-width:760px;display:grid}.page-header-eyebrow{color:var(--color-brand);text-transform:uppercase;margin:0;font-size:.78rem;font-weight:800}.page-header-title{color:var(--color-ink);letter-spacing:0;margin:0;font-size:clamp(2rem,4vw,3.1rem);font-weight:850;line-height:1.05}.page-header-copy{color:var(--color-muted);margin:0;line-height:1.6}.page-header-actions{flex-wrap:wrap;justify-content:flex-end;gap:10px;display:flex}.admin-report-actions{max-width:440px}.admin-export-note{color:var(--color-muted);text-align:right;flex-basis:100%;margin:2px 0 0;font-size:.82rem;line-height:1.45}.eyebrow{color:var(--accent);text-transform:uppercase;margin:0 0 6px;font-size:.78rem;font-weight:750}h1,h2,h3,p{margin-top:0}h1{margin-bottom:8px;font-size:clamp(2rem,5vw,3.8rem);line-height:1.04}h2{font-size:1.25rem}h3{font-size:1rem}.page-title{margin:0 0 var(--space-2);color:var(--color-ink);letter-spacing:0;font-size:2.35rem;font-weight:850;line-height:1.08}.work-title{margin:0 0 var(--space-2);color:var(--color-ink);letter-spacing:0;font-size:1.55rem;font-weight:800;line-height:1.18}.panel-title{color:var(--color-ink);letter-spacing:0;margin:0;font-size:1.05rem;font-weight:800;line-height:1.25}.body-copy{color:var(--color-ink);letter-spacing:0;margin:0;font-size:1rem;line-height:1.6}.muted{color:var(--muted)}.button{border:1px solid var(--border);background:var(--surface);min-height:44px;color:var(--text);border-radius:7px;justify-content:center;align-items:center;gap:8px;padding:8px 13px;font-weight:700;display:inline-flex}.button.primary{border-color:var(--accent);background:var(--accent);color:#fff}.button.primary:hover{background:var(--accent-dark)}.button:disabled{cursor:wait;opacity:.72}.button.danger{border-color:color-mix(in srgb, var(--danger) 45%, var(--border));color:var(--danger)}.ui-button{justify-content:center;align-items:center;gap:var(--space-2);border:1px solid var(--color-border-subtle);border-radius:var(--radius-sm);background:var(--color-surface-raised);min-height:44px;color:var(--color-ink);padding:var(--space-2) 13px;box-shadow:var(--shadow-sm);cursor:pointer;font-weight:750;line-height:1;text-decoration:none;display:inline-flex}.ui-button:hover{text-decoration:none}.ui-button:disabled{cursor:not-allowed;opacity:.64}.ui-button-primary{border-color:var(--color-brand);background:var(--color-brand);color:#fff}.ui-button-primary:hover{border-color:var(--color-brand-hover);background:var(--color-brand-hover)}.ui-button-secondary{border-color:var(--color-border-strong);background:var(--color-surface-raised)}.ui-button-secondary:hover{border-color:var(--color-focus);color:var(--color-focus)}.ui-button-danger{border-color:var(--color-danger);background:var(--color-danger);color:#fff}.ui-button-danger:hover{border-color:color-mix(in srgb, var(--color-danger) 85%, black);background:color-mix(in srgb, var(--color-danger) 85%, black)}.ui-button-ghost{box-shadow:none;color:var(--color-muted);background:0 0;border-color:#0000}.ui-button-ghost:hover{background:var(--color-surface-subtle);color:var(--color-ink)}.ui-panel{gap:var(--space-4);border:1px solid var(--color-border-subtle);border-radius:var(--radius-md);background:var(--color-surface);padding:var(--space-4);box-shadow:var(--shadow-sm);display:grid}.ui-panel-raised{border-color:color-mix(in srgb, var(--color-border-strong) 70%, white);background:var(--color-surface-raised);box-shadow:var(--shadow-md)}.ui-panel-callout{border-color:color-mix(in srgb, var(--color-brand) 28%, var(--color-border-subtle));border-left:4px solid var(--color-brand);background:color-mix(in srgb, var(--color-brand) 6%, white)}.metric-card{border:1px solid var(--color-border-subtle);border-radius:var(--radius-md);background:var(--color-surface);padding:var(--space-4);box-shadow:var(--shadow-sm);gap:6px;display:grid}.metric-card-label{color:var(--color-muted);font-size:.82rem;font-weight:750}.metric-card strong{color:var(--color-ink);font-size:1.7rem;line-height:1.1}.metric-card-detail{color:var(--color-muted);font-size:.9rem}.status-badge{border-radius:999px;align-items:center;width:fit-content;min-height:24px;padding:3px 9px;font-size:.78rem;font-weight:750;line-height:1;display:inline-flex}.status-badge-neutral{background:color-mix(in srgb, var(--color-status-neutral) 12%, white);color:var(--color-status-neutral)}.status-badge-success{background:color-mix(in srgb, var(--color-success) 12%, white);color:var(--color-success)}.status-badge-warning{background:color-mix(in srgb, var(--color-warning) 13%, white);color:var(--color-warning)}.status-badge-danger{background:color-mix(in srgb, var(--color-danger) 10%, white);color:var(--color-danger)}.status-badge-info{background:color-mix(in srgb, var(--color-info) 12%, white);color:var(--color-info)}.data-table-scroll{border-radius:var(--radius-md);width:100%;overflow-x:auto}.data-table-scroll:focus-visible{outline:3px solid color-mix(in srgb, var(--color-focus) 35%, transparent);outline-offset:3px}.data-table{border:1px solid var(--color-border-subtle);border-collapse:collapse;background:var(--color-surface);width:100%}.data-table th,.data-table td{border-bottom:1px solid var(--color-border-subtle);padding:var(--space-3);text-align:left;vertical-align:top}.data-table th{background:var(--color-surface-subtle);color:var(--color-muted);text-transform:uppercase;font-size:.82rem;font-weight:750}.data-table tr:last-child td{border-bottom:0}.action-row{flex-wrap:wrap;gap:10px;display:flex}.batch-actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.account-section{gap:16px;display:grid}.account-section+.account-section{border-top:1px solid var(--border);margin-top:34px;padding-top:26px}.account-section-header{justify-content:space-between;align-items:end;gap:16px;display:flex}.account-section-header h2{color:var(--text);margin:0 0 4px;font-size:1.35rem;line-height:1.2}.account-section-header p{margin:0}.account-table-scroll{margin-top:2px}.accounts-table{min-width:960px}.user-actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.user-inline-form{grid-template-columns:minmax(180px,1fr) auto;align-items:center;gap:8px;display:grid}.user-status-form{gap:6px;display:grid}.user-inline-form input{border:1px solid var(--border);border-radius:7px;min-height:38px;padding:8px 10px}.user-inline-form .form-alert,.user-inline-form .inline-success{grid-column:1/-1;margin:0}.user-status-form .form-alert{max-width:260px;margin:0}.inline-success{border:1px solid color-mix(in srgb, var(--success) 32%, var(--border));background:color-mix(in srgb, var(--success) 8%, white);color:var(--success);border-radius:7px;padding:8px 10px;font-weight:700}.account-action-note{align-items:center;min-height:38px;font-weight:700;display:inline-flex}.batch-inline-form,.hard-delete-form{grid-template-columns:repeat(2,minmax(180px,1fr)) auto;align-items:center;gap:8px;display:grid}.batch-inline-form input,.hard-delete-form input{border:1px solid var(--border);border-radius:7px;min-height:38px;padding:8px 10px}.batch-inline-form .form-alert{grid-column:1/-1;margin:0}.destructive-inline-form{border:1px solid color-mix(in srgb, var(--danger) 25%, var(--border));background:color-mix(in srgb, var(--danger) 5%, white);border-radius:8px;padding:8px}.grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;display:grid}.card{border:1px solid var(--border);background:var(--surface);border-radius:8px;padding:18px}.level-card{min-height:260px}.student-workflow-grid{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:16px;margin-bottom:18px;display:grid}.student-focus-card,.student-results-card{align-content:start;gap:12px;display:grid}.recent-result-list{gap:8px;display:grid}.recent-result-row{border:1px solid var(--border);border-radius:7px;justify-content:space-between;align-items:center;gap:14px;min-height:54px;padding:10px 12px;display:flex}.recent-result-row>span{gap:3px;display:grid}.level-title{justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px;display:flex}.level-badge,.status{background:var(--surface-muted);min-height:24px;color:var(--muted);border-radius:999px;align-items:center;padding:3px 9px;font-size:.78rem;font-weight:750;display:inline-flex}.command-pill{border:1px solid var(--border);background:var(--surface);max-width:100%;min-height:38px;color:var(--muted);white-space:normal;border-radius:7px;align-items:center;padding:8px 11px;font-size:.86rem;display:inline-flex}.paper-list{gap:10px;display:grid}.paper-row{border:1px solid var(--border);border-radius:7px;gap:6px;padding:12px;display:grid}.paper-row:hover{border-color:var(--focus)}.student-app-shell{--student-navy:#061a44;--student-red:#d80b18;--student-red-dark:#ae0913;--student-blue-soft:#eef4ff;--student-line:#dbe4f0;color:var(--student-navy);background:#f7f9fd;grid-template-rows:1fr;grid-template-columns:246px minmax(0,1fr);display:grid}.student-sidebar{border-right:1px solid var(--student-line);background:#fff;grid-template-rows:auto minmax(0,1fr) auto;gap:28px;height:100vh;padding:22px 18px;display:grid;position:sticky;top:0;overflow-y:auto}.student-sidebar-brand{color:var(--student-navy);justify-items:start;gap:6px;display:grid}.student-sidebar-brand-logo{width:132px;height:auto}.student-sidebar-brand-text{font-size:.78rem;font-weight:850}.student-sidebar-brand-mark{color:var(--student-red);letter-spacing:0;font-size:3.7rem;font-weight:950;line-height:.9}.student-sidebar-brand span:last-child{font-size:.78rem;font-weight:850}.student-sidebar-nav{align-content:start;gap:8px;min-width:0;display:grid}.student-sidebar-nav-link{min-height:52px;color:var(--student-navy);border-radius:7px;grid-template-columns:26px minmax(0,1fr);align-items:center;gap:12px;padding:10px 12px;font-weight:850;display:grid}.student-sidebar-nav-link:hover{background:color-mix(in srgb, var(--student-blue-soft) 72%, white)}.student-sidebar-nav-link[aria-current=page]{background:var(--student-red);color:#fff;box-shadow:none}.student-sidebar-nav-icon{color:inherit;display:inline-flex}.student-sidebar-nav-mobile-label{display:none}.student-sidebar-trust{border:1px solid var(--student-line);background:linear-gradient(#fff 0%,#f7faff 100%);border-radius:8px;gap:10px;padding:18px;display:grid}.student-sidebar-trust strong{color:var(--student-navy);font-size:.92rem}.student-sidebar-trust p{color:#314366;margin:0;font-size:.86rem;line-height:1.45}.student-main-shell{grid-template-rows:auto minmax(0,1fr) auto;min-width:0;display:grid}.student-main-shell .app-shell-footer{border-top-color:var(--student-line);color:#53617a;background:#fff;padding:16px 30px}.student-topbar{border-bottom:1px solid var(--student-line);background:#ffffffeb;justify-content:flex-end;align-items:center;gap:22px;min-height:72px;padding:14px 30px;display:flex}.student-help-link{color:var(--student-navy);font-weight:800}.student-topbar-session{justify-content:flex-end;align-items:center;gap:12px;min-width:0;display:flex}.student-session-avatar{background:#fff;border:1px solid #d9e3f0;border-radius:999px;width:44px;height:44px;box-shadow:0 8px 18px #081c4614}.profile-avatar{background:radial-gradient(circle at 32% 25%, #fff3, transparent 34%), var(--profile-avatar-color,var(--student-navy));color:#fff;border-radius:999px;flex:none;place-items:center;display:inline-grid;position:relative;box-shadow:inset 0 0 0 1px #ffffff38}.profile-avatar-sm{width:44px;height:44px}.profile-avatar-md{width:72px;height:72px}.profile-avatar-lg{width:84px;height:84px}.profile-avatar svg{width:52%;height:52%}.profile-avatar-stacked-glyph{place-items:center;width:64%;height:64%;display:inline-grid;position:relative}.profile-avatar-stacked-glyph .profile-avatar-person{width:100%;height:100%}.profile-avatar-stacked-glyph .profile-avatar-glasses{width:70%;height:70%;position:absolute;top:0;left:15%}.profile-avatar-initials{color:#fff;letter-spacing:0;font-weight:950;line-height:1}.profile-avatar-sm .profile-avatar-initials{font-size:.9rem}.profile-avatar-md .profile-avatar-initials{font-size:1.35rem}.profile-avatar-lg .profile-avatar-initials{font-size:1.65rem}.student-app-shell .app-shell-role-label{color:var(--student-navy);background:#eef3fa;border-color:#dce6f2}.past-papers-page,.student-detail-page,.student-info-page,.student-profile-page,.student-progress-page,.student-result-page,.student-attempt-page{width:min(1160px,100% - 48px);padding-top:28px}.past-papers-hero{grid-template-columns:minmax(0,1fr) minmax(260px,380px);align-items:center;gap:30px;margin-bottom:34px;display:grid}.past-papers-hero h1,.paper-overview-hero h1,.student-info-hero h1,.student-profile-hero h1,.student-progress-hero h1,.student-result-hero h1{color:var(--student-navy);font-size:clamp(2.5rem,5vw,3.35rem);font-weight:950;line-height:1.04}.past-papers-hero-copy p,.paper-overview-hero .muted,.student-profile-hero-copy p,.student-progress-hero .muted,.student-result-hero .muted{color:#21345c;max-width:620px;font-size:1.05rem;line-height:1.65}.past-papers-hero-art{min-height:205px;position:relative}.past-papers-hero-art:before{content:"";background:#edf2fb;border-radius:999px;width:148px;height:148px;position:absolute;inset:12px 32px auto auto}.paper-stack{border-radius:9px;width:165px;height:34px;position:absolute;left:52px;box-shadow:0 10px 24px #081c461f}.paper-stack:after{content:"";background:#f7fbff;border-radius:999px;width:70px;height:16px;position:absolute;top:8px;right:12px}.paper-stack-navy{background:var(--student-navy);top:62px}.paper-stack-red{border:6px solid var(--student-red);background:#fff;top:100px}.paper-stack.lower{top:138px}.paper-sheet{border:1px solid var(--student-line);background:#fff;border-radius:8px;align-content:start;gap:10px;width:138px;min-height:166px;padding:18px 20px;display:grid;position:absolute;top:24px;right:38px;box-shadow:0 16px 34px #081c461f}.paper-sheet strong{color:var(--student-red);font-size:1.6rem}.paper-sheet i{background:#e2e8f3;border-radius:999px;height:4px;display:block}.paper-check{background:var(--student-navy);color:#fff;border-radius:999px;place-items:center;width:38px;height:38px;display:grid;position:absolute;bottom:28px;right:34px}.past-papers-level-section,.exam-period-section,.student-support-grid,.student-about-section{gap:16px;margin-bottom:22px;display:grid}.past-papers-level-section h2,.exam-period-section h2{color:var(--student-navy);margin:0;font-size:1.05rem}.level-selector-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;display:grid}.level-selector-card{border:1px solid var(--student-line);min-height:92px;color:var(--student-navy);background:#fff;border-radius:8px;place-items:center;padding:16px;display:grid;position:relative}.level-selector-card strong{font-size:1.45rem}.level-selector-card[aria-current=true]{border-color:var(--student-red);color:var(--student-red);background:linear-gradient(90deg,#fff7f7 0%,#fff 100%)}.level-selector-card svg{position:absolute;top:12px;right:12px}.exam-period-section>div:first-child p{color:#314366;margin:6px 0 0}.exam-period-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;display:grid}.exam-period-column{border:1px solid var(--student-line);background:#fff;border-radius:8px;overflow:hidden}.exam-period-row{border-bottom:1px solid var(--student-line);min-height:56px;color:var(--student-navy);grid-template-columns:34px 42px minmax(0,1fr) auto;align-items:center;gap:12px;padding:10px 18px;display:grid}.exam-period-row:last-child{border-bottom:0}.exam-period-row:hover{background:#f7faff}.exam-period-number{font-weight:900}.exam-period-calendar{width:38px;height:38px;color:var(--student-navy);background:#f0f4fb;border-radius:999px;place-items:center;display:grid}.period-start-button{border:1px solid color-mix(in srgb, var(--student-red) 70%, white);min-width:104px;min-height:34px;color:var(--student-red);border-radius:7px;justify-content:center;align-items:center;gap:8px;font-weight:850;display:inline-flex}.past-papers-info-strip{color:var(--student-navy);background:#edf4ff;border-radius:7px;align-items:center;gap:12px;padding:14px 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