@charset "UTF-8";:root{--violet-50: #f5f1fe;--violet-100: #ede4fb;--violet-200: #ddccf7;--violet-300: #c4a9f0;--violet-400: #a784e8;--violet-500: #8b5cf6;--violet-600: #7c3aed;--violet-700: #6d28d9;--violet-800: #5b21b6;--violet-900: #4c1d95;--neutral-0: #ffffff;--neutral-25: #faf9fd;--neutral-50: #f6f3fb;--neutral-100: #efeaf7;--neutral-150: #e7e0f1;--neutral-200: #ded6ea;--neutral-300: #c8bedd;--neutral-400: #9d93b2;--neutral-500: #7d7391;--neutral-600: #574f68;--neutral-700: #3e3750;--neutral-800: #292236;--neutral-900: #1a1526;--mint-50: #ddf3e9;--mint-500: #22a06b;--mint-600: #1c8c5e;--mint-700: #146848;--cream-50: #fbefc9;--cream-500: #d9930f;--cream-600: #b5760c;--cream-700: #8a5a09;--rose-50: #fce4ea;--rose-500: #e5484d;--rose-600: #cf3a52;--rose-700: #a52c44;--sky-50: #e1ecfb;--sky-500: #4c86e0;--sky-600: #2f6fd0;--sky-700: #245bab;--pink-50: #fbe1ee;--pink-500: #ec6ba6;--pink-600: #d24d8c;--pink-700: #a83b6f;--peach-50: #fce7d2;--peach-500: #f0913e;--peach-600: #d2751f;--peach-700: #a35a17}:root{--color-primary: var(--violet-500);--color-primary-strong: var(--violet-600);--color-primary-light: var(--violet-400);--color-primary-dark: var(--violet-700);--color-primary-hover: var(--violet-600);--color-primary-active: var(--violet-700);--color-on-primary: #ffffff;--color-accent: var(--pink-500);--color-success: var(--mint-600);--color-warning: var(--cream-600);--color-danger: var(--rose-600);--color-info: var(--sky-600);--color-bg: var(--neutral-50);--color-bg-card: var(--neutral-0);--color-bg-soft: #f1ecfa;--color-bg-translucent: rgba(255, 255, 255, .82);--color-border: var(--neutral-200);--color-border-strong: var(--neutral-300);--surface-1: var(--neutral-0);--surface-2: var(--neutral-50);--surface-3: var(--neutral-100);--surface-sunken: var(--neutral-100);--surface-inverse: var(--neutral-900);--color-text-primary: var(--neutral-900);--color-text-secondary: var(--neutral-600);--color-text-muted: var(--neutral-500);--color-text-disabled: var(--neutral-400);--color-text-inverse: var(--neutral-0);--color-link: var(--color-primary-strong);--tint-primary-bg: var(--violet-100);--tint-primary-fg: var(--violet-700);--tint-success-bg: var(--mint-50);--tint-success-fg: var(--mint-700);--tint-warning-bg: var(--cream-50);--tint-warning-fg: var(--cream-700);--tint-danger-bg: var(--rose-50);--tint-danger-fg: var(--rose-700);--tint-info-bg: var(--sky-50);--tint-info-fg: var(--sky-700);--tint-accent-bg: var(--pink-50);--tint-accent-fg: var(--pink-700);--tint-peach-bg: var(--peach-50);--tint-peach-fg: var(--peach-700);--tint-neutral-bg: var(--neutral-100);--tint-neutral-fg: var(--neutral-600);--gradient-brand: linear-gradient(135deg, #a78bfa 0%, #8b5cf6 52%, #7c3aed 100%);--gradient-brand-soft: linear-gradient(135deg, #f5f1fe 0%, #fbe8f3 100%);--gradient-hero: linear-gradient(135deg, #8b5cf6 0%, #a06bf0 45%, #c56fd0 100%);--gradient-sheen: linear-gradient(135deg, rgba(255, 255, 255, .2), rgba(255, 255, 255, 0));--ring-width: 3px;--ring-color: rgba(139, 92, 246, .36);--ring: 0 0 0 var(--ring-width) var(--ring-color);--ring-danger: 0 0 0 var(--ring-width) rgba(207, 58, 82, .3);--selection-bg: rgba(139, 92, 246, .18);--scrollbar-track: #efeaf7;--scrollbar-thumb: #cabfe0;--scrollbar-thumb-hover: #a996cf;--overlay: rgba(38, 24, 60, .42);--font-h1: 22px;--font-h2: 18px;--font-h3: 16px;--font-body: 14px;--font-caption: 12px;--text-2xs: 11px;--text-xs: 12px;--text-sm: 13px;--text-base: 14px;--text-md: 15px;--text-lg: 16px;--text-xl: 18px;--text-2xl: 22px;--text-3xl: 28px;--text-4xl: 34px;--text-5xl: 44px;--fw-regular: 400;--fw-medium: 500;--fw-semibold: 600;--fw-bold: 700;--fw-heavy: 800;--leading-tight: 1.2;--leading-snug: 1.35;--leading-normal: 1.5;--leading-relaxed: 1.7;--font-sans: "Nunito", "Quicksand", "Inter", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-display: var(--font-sans);--font-mono: "JetBrains Mono", "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;--space-0: 0;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--space-7: 40px;--space-8: 48px;--space-9: 64px;--space-10: 80px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--radius-2xl: 28px;--radius-3xl: 36px;--radius-full: 999px;--shadow-xs: 0 1px 2px rgba(80, 40, 140, .05);--shadow-sm: 0 2px 8px rgba(124, 58, 237, .06), 0 1px 2px rgba(80, 40, 140, .04);--shadow-md: 0 10px 24px rgba(124, 58, 237, .1);--shadow-lg: 0 18px 40px rgba(109, 40, 217, .14);--shadow-xl: 0 26px 60px rgba(109, 40, 217, .18);--shadow-inset: inset 0 1px 2px rgba(80, 40, 140, .06);--shadow-primary: 0 12px 26px rgba(139, 92, 246, .34);--z-base: 1;--z-raised: 10;--z-dropdown: 1000;--z-sticky: 180;--z-drawer: 220;--z-overlay: 2000;--z-modal: 2400;--z-popover: 2600;--z-toast: 2800;--z-celebrate: 3000;--z-tour: 3200;--duration-instant: 80ms;--duration-fast: .12s;--duration-base: .18s;--duration-slow: .26s;--duration-slower: .4s;--ease-standard: cubic-bezier(.2, 0, 0, 1);--ease-emphasized: cubic-bezier(.05, .7, .1, 1);--ease-decelerate: cubic-bezier(0, 0, 0, 1);--ease-accelerate: cubic-bezier(.3, 0, 1, 1);--ease-spring: cubic-bezier(.34, 1.4, .5, 1);--transition: all var(--duration-base) var(--ease-standard);--transition-colors: color var(--duration-base) var(--ease-standard), background-color var(--duration-base) var(--ease-standard), border-color var(--duration-base) var(--ease-standard);--transition-transform: transform var(--duration-base) var(--ease-spring);--layout-sidebar-w: 248px;--layout-topbar-h: 64px;--layout-max-w: 1440px;--tap-target: 44px}:root:root{--el-color-primary: var(--violet-600);--el-color-primary-light-3: #9163e8;--el-color-primary-light-5: #b39df0;--el-color-primary-light-7: #d5c8f7;--el-color-primary-light-8: #e6ddfb;--el-color-primary-light-9: var(--violet-50);--el-color-primary-dark-2: var(--violet-800);--el-color-success: var(--color-success);--el-color-warning: var(--color-warning);--el-color-danger: var(--color-danger);--el-color-error: var(--color-danger);--el-color-info: var(--color-info);--el-border-radius-base: var(--radius-md);--el-font-family: var(--font-sans)}:root.dark,:root[data-theme=dark]{--el-color-primary: var(--violet-400);--el-color-primary-light-3: #6d4bb0;--el-color-primary-light-5: #543a86;--el-color-primary-light-7: #3d2c60;--el-color-primary-light-8: #31244e;--el-color-primary-light-9: #261d3d;--el-color-primary-dark-2: var(--violet-300)}html.dark,html[data-theme=dark]{color-scheme:dark;--color-primary: var(--violet-400);--color-primary-strong: var(--violet-400);--color-primary-light: var(--violet-300);--color-primary-dark: var(--violet-500);--color-primary-hover: var(--violet-300);--color-primary-active: var(--violet-500);--color-on-primary: #1c1030;--color-accent: #f286b4;--color-success: #34c491;--color-warning: #e6b25a;--color-danger: #f0787f;--color-info: #74a2ec;--color-bg: #120e1c;--color-bg-card: #1c1730;--color-bg-soft: #241d3a;--color-bg-translucent: rgba(24, 19, 42, .82);--color-border: #322a48;--color-border-strong: #453a60;--surface-1: #1c1730;--surface-2: #241d3a;--surface-3: #2c2446;--surface-sunken: #16111f;--surface-inverse: #ede9f5;--color-text-primary: #ece8f6;--color-text-secondary: #b3aac6;--color-text-muted: #857b9c;--color-text-disabled: #5c5372;--color-text-inverse: #120e1c;--color-link: var(--violet-300);--tint-primary-bg: rgba(139, 92, 246, .2);--tint-primary-fg: #c9b6fb;--tint-success-bg: rgba(52, 196, 145, .16);--tint-success-fg: #5fd3a6;--tint-warning-bg: rgba(230, 178, 90, .16);--tint-warning-fg: #edc079;--tint-danger-bg: rgba(240, 120, 127, .16);--tint-danger-fg: #f4948e;--tint-info-bg: rgba(116, 162, 236, .16);--tint-info-fg: #a3c1f2;--tint-accent-bg: rgba(242, 134, 180, .16);--tint-accent-fg: #f4a6c8;--tint-peach-bg: rgba(240, 145, 62, .16);--tint-peach-fg: #f0b077;--tint-neutral-bg: rgba(157, 147, 178, .14);--tint-neutral-fg: #bcb2cf;--gradient-brand: linear-gradient(135deg, #6d3fc4 0%, #5a2fa8 55%, #47228a 100%);--gradient-brand-soft: linear-gradient(135deg, #221a38 0%, #2c1d3e 100%);--gradient-hero: linear-gradient(135deg, #6d3fc4 0%, #7c46b8 45%, #9a4fae 100%);--gradient-sheen: linear-gradient(135deg, rgba(255, 255, 255, .1), rgba(255, 255, 255, 0));--ring-color: rgba(167, 132, 232, .44);--selection-bg: rgba(139, 92, 246, .3);--scrollbar-track: #1a1430;--scrollbar-thumb: #3d3358;--scrollbar-thumb-hover: #524670;--overlay: rgba(0, 0, 0, .62);--shadow-xs: 0 1px 2px rgba(0, 0, 0, .3);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .38), 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 10px 24px rgba(0, 0, 0, .46);--shadow-lg: 0 18px 42px rgba(0, 0, 0, .54);--shadow-xl: 0 26px 62px rgba(0, 0, 0, .62);--shadow-inset: inset 0 1px 2px rgba(0, 0, 0, .38);--shadow-primary: 0 12px 28px rgba(0, 0, 0, .5);--el-bg-color: var(--color-bg-card);--el-bg-color-page: var(--color-bg);--el-bg-color-overlay: var(--surface-3);--el-text-color-primary: var(--color-text-primary);--el-text-color-regular: var(--color-text-secondary);--el-text-color-secondary: var(--color-text-muted);--el-text-color-placeholder: var(--color-text-disabled);--el-border-color: var(--color-border-strong);--el-border-color-light: var(--color-border);--el-border-color-lighter: var(--color-border);--el-border-color-extra-light: var(--color-border);--el-fill-color: var(--surface-2);--el-fill-color-light: var(--surface-2);--el-fill-color-lighter: var(--surface-1);--el-fill-color-blank: var(--color-bg-card);--el-mask-color: var(--overlay)}:root[data-font-scale=large]{--font-h1: 25px;--font-h2: 21px;--font-h3: 18px;--font-body: 16px;--font-caption: 14px;--text-2xs: 13px;--text-xs: 14px;--text-sm: 15px;--text-base: 16px;--text-md: 17px;--text-lg: 18px;--text-xl: 21px;--text-2xl: 25px;--text-3xl: 32px;--text-4xl: 39px;--text-5xl: 50px}:root[data-font-scale=xlarge]{--font-h1: 30px;--font-h2: 24px;--font-h3: 22px;--font-body: 19px;--font-caption: 16px;--text-2xs: 15px;--text-xs: 16px;--text-sm: 18px;--text-base: 19px;--text-md: 20px;--text-lg: 22px;--text-xl: 24px;--text-2xl: 30px;--text-3xl: 38px;--text-4xl: 46px;--text-5xl: 59px}:root[data-font-scale=large] .question-title,:root[data-font-scale=large] .question-stem,:root[data-font-scale=large] .opt-text,:root[data-font-scale=large] .preview-title,:root[data-font-scale=xlarge] .question-title,:root[data-font-scale=xlarge] .question-stem,:root[data-font-scale=xlarge] .opt-text,:root[data-font-scale=xlarge] .preview-title{line-height:1.8}:root[data-contrast=high]{--color-text-primary: #000000;--color-text-secondary: #1f1f1f;--color-text-muted: #3d3d3d;--color-border: #767676;--color-border-strong: #4a4a4a;--el-text-color-regular: #1f1f1f;--el-text-color-secondary: #3d3d3d;--el-text-color-placeholder: #5c5c5c;--el-border-color: #767676;--el-border-color-light: #8a8a8a}:root[data-contrast=high] *:focus-visible{outline:3px solid var(--color-primary, #6d4aff)!important;outline-offset:2px!important}:root[data-reduce-motion="1"] *,:root[data-reduce-motion="1"] *:before,:root[data-reduce-motion="1"] *:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}@media (prefers-reduced-motion: reduce){:root:not([data-reduce-motion="0"]) *,:root:not([data-reduce-motion="0"]) *:before,:root:not([data-reduce-motion="0"]) *:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}:focus-visible{outline:2px solid var(--color-primary, #6d4aff);outline-offset:2px}.a11y-speak-btn{display:inline-flex;align-items:center;justify-content:center;gap:4px;min-width:28px;height:28px;padding:0 8px;margin-left:6px;border:1px solid var(--color-border);border-radius:999px;background:transparent;color:var(--color-text-secondary);font-size:var(--text-xs);cursor:pointer;vertical-align:middle}.a11y-speak-btn:hover{color:var(--color-primary, #6d4aff);border-color:var(--color-primary, #6d4aff)}.a11y-speak-btn.is-speaking{color:var(--color-primary, #6d4aff);border-color:var(--color-primary, #6d4aff);background:var(--el-color-primary-light-9, #f2eeff)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;font-family:var(--font-sans);font-size:var(--font-body);line-height:var(--leading-normal);color:var(--color-text-primary);background-color:var(--color-bg);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}:root{color-scheme:light}#app{height:100%}::selection{background:var(--selection-bg)}a{color:var(--color-link);text-decoration:none;transition:var(--transition-colors)}a:hover{color:var(--color-primary-hover)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--scrollbar-track)}::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:var(--radius-full);border:2px solid var(--scrollbar-track)}::-webkit-scrollbar-thumb:hover{background:var(--scrollbar-thumb-hover)}.el-button--primary{--el-button-bg-color: var(--color-primary-strong);--el-button-border-color: var(--color-primary-strong);--el-button-hover-bg-color: var(--color-primary);--el-button-hover-border-color: var(--color-primary);--el-button-active-bg-color: var(--color-primary-active);--el-button-active-border-color: var(--color-primary-active);--el-button-text-color: var(--color-on-primary)}.el-button{border-radius:var(--radius-md);font-weight:var(--fw-medium)}.el-input__wrapper,.el-select__wrapper,.el-textarea__inner{border-radius:var(--radius-md)!important;box-shadow:0 0 0 1px var(--color-border) inset!important}.el-input__wrapper:hover,.el-select__wrapper:hover,.el-textarea__inner:hover{box-shadow:0 0 0 1px var(--color-border-strong) inset!important}.el-input__wrapper.is-focus,.el-select__wrapper.is-focused,.el-textarea__inner:focus{box-shadow:0 0 0 2px var(--ring-color),0 0 0 1px var(--color-primary) inset!important}.el-menu{border-right:none!important}.el-card,.page-card{background:var(--color-bg-card);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);border:1px solid var(--color-border);padding:var(--space-5)}.el-card{--el-card-padding: var(--space-5)}.el-dialog{border-radius:var(--radius-2xl);overflow:hidden}.el-dialog__header{padding:20px 24px 12px;border-bottom:1px solid var(--color-border)}.el-dialog__body{padding:20px 24px}.el-table{--el-table-header-bg-color: var(--surface-2);--el-table-header-text-color: var(--color-text-secondary);--el-table-row-hover-bg-color: var(--color-bg-soft);--el-table-bg-color: var(--color-bg-card);--el-table-tr-bg-color: var(--color-bg-card);--el-table-border-color: var(--color-border);color:var(--color-text-primary);font-size:var(--text-sm)}.el-table th.el-table__cell{font-weight:var(--fw-semibold)}.el-tag{border-radius:var(--radius-full);font-weight:var(--fw-semibold)}.el-button--primary{transition:transform var(--duration-fast) var(--ease-spring),background var(--duration-base)}.el-button--primary:hover:not(.is-disabled){transform:translateY(-1px)}.page-title{font-size:var(--text-2xl);font-weight:var(--fw-heavy);color:var(--color-text-primary);letter-spacing:-.01em;margin-bottom:var(--space-6)}.tag-admin{background:var(--tint-accent-bg);color:var(--tint-accent-fg)}.tag-teacher{background:var(--tint-primary-bg);color:var(--tint-primary-fg)}.tag-student{background:var(--tint-success-bg);color:var(--tint-success-fg)}.toolbar,.table-card,.table-container{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm)}.toolbar{padding:var(--space-4) var(--space-5)}.table-card,.table-container{overflow:hidden}.pagination{padding:14px 16px;display:flex;justify-content:flex-end;border-top:1px solid var(--color-border);background:var(--surface-2)}@media (min-width: 981px){.mobile-drawer.el-drawer{display:none!important}}@media (max-width: 768px){.el-dialog{width:94vw!important;max-width:94vw!important;margin:5vh auto!important;display:flex;flex-direction:column;max-height:90vh}.el-dialog__body{overflow-y:auto;-webkit-overflow-scrolling:touch}.el-pagination .el-pagination__sizes,.el-pagination .el-pagination__jump{display:none!important}.el-col-12{max-width:100%!important;flex:0 0 100%!important}.el-button{min-height:40px}.el-button.is-circle{min-height:40px;min-width:40px}}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}}