:root{color-scheme:light;--ion-font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;--font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;--text-2xs: 11px;--text-xs: 12px;--text-sm: 14px;--text-base: 15px;--text-md: 17px;--text-lg: 20px;--text-xl: 26px;--text-2xl: 34px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--ion-color-primary: #285c46;--ion-color-primary-rgb: 40, 92, 70;--ion-color-primary-contrast: #ffffff;--ion-color-primary-contrast-rgb: 255, 255, 255;--ion-color-primary-shade: #234f3d;--ion-color-primary-tint: #3e6c59;--ion-color-secondary: #a4542e;--ion-color-secondary-rgb: 164, 84, 46;--ion-color-secondary-contrast: #ffffff;--ion-color-secondary-contrast-rgb: 255, 255, 255;--ion-color-secondary-shade: #904a28;--ion-color-secondary-tint: #ad6543;--ion-color-tertiary: #6b6650;--ion-color-tertiary-rgb: 107, 102, 80;--ion-color-tertiary-contrast: #ffffff;--ion-color-tertiary-contrast-rgb: 255, 255, 255;--ion-color-tertiary-shade: #5e5a46;--ion-color-tertiary-tint: #7a7562;--ion-color-success: #2b7455;--ion-color-success-rgb: 43, 116, 85;--ion-color-success-contrast: #ffffff;--ion-color-success-contrast-rgb: 255, 255, 255;--ion-color-success-shade: #26664b;--ion-color-success-tint: #408266;--ion-color-warning: #a4542e;--ion-color-warning-rgb: 164, 84, 46;--ion-color-warning-contrast: #ffffff;--ion-color-warning-contrast-rgb: 255, 255, 255;--ion-color-warning-shade: #904a28;--ion-color-warning-tint: #ad6543;--ion-color-danger: #b33e46;--ion-color-danger-rgb: 179, 62, 70;--ion-color-danger-contrast: #ffffff;--ion-color-danger-contrast-rgb: 255, 255, 255;--ion-color-danger-shade: #9e373e;--ion-color-danger-tint: #bb5159;--ion-color-medium: #646e65;--ion-color-medium-rgb: 100, 110, 101;--ion-color-medium-contrast: #ffffff;--ion-color-medium-contrast-rgb: 255, 255, 255;--ion-color-medium-shade: #586159;--ion-color-medium-tint: #747d74;--ion-background-color: #fcfcfa;--ion-background-color-rgb: 252, 252, 250;--ion-text-color: #262e28;--ion-text-color-rgb: 38, 46, 40;--ion-item-background: #ffffff;--surface: #ffffff;--surface-raised: #ffffff;--surface-soft: #f0f3ed;--line: #e6eae3;--text-muted: #646e65;--text-subtle: #697269;--hairline: rgba(38, 46, 40, .08);--hairline-strong: rgba(38, 46, 40, .16);--fill: #f0f3ed;--tint-primary: #edf3e9;--tint-primary-strong: #dfeadb;--tint-warning: #fff2e7;--tint-success: #eaf5ef;--tint-danger: #fdf0f0;--jade-50: #edf3e9;--jade-100: #dce8da;--jade-200: #b8cdb5;--jade-500: #3d7a58;--jade-600: #285c46;--jade-700: #244f3f;--jade-800: #1a3a2e;--subject-chinese: #a4542e;--subject-math: #3a659d;--subject-english: #73618f;--subject-physics: #2e6a7c;--subject-chemistry: #96611e;--subject-biology: #2b7455;--subject-default: #285c46;--radius-xs: 8px;--radius-sm: 12px;--radius-md: 16px;--radius-lg: 20px;--radius-full: 999px;--shadow-sm: 0 1px 2px rgba(38, 46, 40, .035);--shadow-raised: 0 1px 4px rgba(38, 46, 40, .09);--shadow-md: 0 4px 20px rgba(38, 46, 40, .08);--shadow-lg: 0 12px 48px rgba(38, 46, 40, .16);--shadow-primary: none;--ease-out: cubic-bezier(.22, .61, .36, 1);--ease-spring: cubic-bezier(.2, .7, .2, 1);--dur-fast: .13s;--dur: .18s;--dur-slow: .24s;--grid-motif: none;--gradient-banner: #285c46;--gradient-parent-banner: #354e40;--gradient-brand-mark: var(--ion-color-primary)}@media(prefers-color-scheme:dark){:root{color-scheme:dark;--ion-color-primary: #add5b7;--ion-color-primary-rgb: 173, 213, 183;--ion-color-primary-contrast: #1a3020;--ion-color-primary-contrast-rgb: 26, 48, 32;--ion-color-primary-shade: #98bba1;--ion-color-primary-tint: #b5d9be;--ion-color-secondary: #efb38b;--ion-color-secondary-rgb: 239, 179, 139;--ion-color-secondary-contrast: #352318;--ion-color-secondary-contrast-rgb: 53, 35, 24;--ion-color-secondary-shade: #d29e7a;--ion-color-secondary-tint: #f1bb97;--ion-color-tertiary: #d0c9aa;--ion-color-tertiary-rgb: 208, 201, 170;--ion-color-tertiary-contrast: #2d2b20;--ion-color-tertiary-contrast-rgb: 45, 43, 32;--ion-color-tertiary-shade: #b7b196;--ion-color-tertiary-tint: #d5ceb3;--ion-color-success: #9cd7b7;--ion-color-success-rgb: 156, 215, 183;--ion-color-success-contrast: #1d3226;--ion-color-success-contrast-rgb: 29, 50, 38;--ion-color-success-shade: #89bda1;--ion-color-success-tint: #a6dbbe;--ion-color-warning: #efb38b;--ion-color-warning-rgb: 239, 179, 139;--ion-color-warning-contrast: #352318;--ion-color-warning-contrast-rgb: 53, 35, 24;--ion-color-warning-shade: #d29e7a;--ion-color-warning-tint: #f1bb97;--ion-color-danger: #f4a8ae;--ion-color-danger-rgb: 244, 168, 174;--ion-color-danger-contrast: #422b34;--ion-color-danger-contrast-rgb: 66, 43, 52;--ion-color-danger-shade: #d79499;--ion-color-danger-tint: #f5b1b6;--ion-color-medium: #b2bcb2;--ion-color-medium-rgb: 178, 188, 178;--ion-color-medium-contrast: #222823;--ion-color-medium-contrast-rgb: 34, 40, 35;--ion-color-medium-shade: #9da59d;--ion-color-medium-tint: #bac3ba;--ion-background-color: #181c19;--ion-background-color-rgb: 24, 28, 25;--ion-text-color: #eef2ec;--ion-text-color-rgb: 238, 242, 236;--ion-item-background: #222823;--surface: #222823;--surface-raised: #2b352c;--surface-soft: #2b352c;--line: #384239;--text-muted: #b2bcb2;--text-subtle: #a4afa4;--hairline: rgba(238, 242, 236, .1);--hairline-strong: rgba(238, 242, 236, .19);--fill: #2b352c;--tint-primary: #2d3e30;--tint-primary-strong: #3b5140;--tint-warning: #3c2c25;--tint-success: #253b33;--tint-danger: #422b34;--jade-50: #2d3e30;--jade-100: #354939;--jade-200: #58715c;--jade-500: #9ac8a7;--jade-600: #add5b7;--jade-700: #bddfc4;--jade-800: #d7e9d6;--subject-chinese: #efb38b;--subject-math: #a2bfea;--subject-english: #c8b6e2;--subject-physics: #8ec6d4;--subject-chemistry: #e5c080;--subject-biology: #9cd7b7;--subject-default: #add5b7;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .15);--shadow-raised: 0 1px 4px rgba(0, 0, 0, .3);--shadow-md: 0 4px 20px rgba(0, 0, 0, .25);--shadow-lg: 0 12px 48px rgba(0, 0, 0, .4);--gradient-banner: #254332;--gradient-parent-banner: #2b4031}}@media(prefers-contrast:more){:root{--text-muted: #465347;--text-subtle: #465347;--line: #8c998c}}@media(prefers-contrast:more)and (prefers-color-scheme:dark){:root{--text-muted: #d4dfd3;--text-subtle: #d4dfd3;--line: #9cae9c}}*{box-sizing:border-box;letter-spacing:0}body{margin:0;background:var(--ion-background-color);color:var(--ion-text-color);font-size:var(--text-sm);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;text-rendering:optimizeLegibility}button,ion-button,ion-item,ion-segment-button{min-height:44px}.metric strong,.message-summary strong,.result-hero strong,.exam-clock strong,.score-ring strong,.session-summary strong,.timeline-item time,.progress-line strong{font-feature-settings:"tnum" 1,"zero" 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var(--ease-out)}ion-button:active{transform:scale(.97)}ion-button.button-solid:not(.ion-color-secondary):not(.ion-color-tertiary):not(.ion-color-success):not(.ion-color-warning):not(.ion-color-danger):not(.ion-color-medium):not(.ion-color-dark):not(.ion-color-light):hover{filter:brightness(.96)}ion-button[size=large]{min-height:52px;font-size:var(--text-base)}ion-button.button-outline{--border-width: 1.5px}ion-card-title,ion-card-subtitle,ion-label h2,ion-label h3,ion-label p,.page-description,.answer-content,.suggestion-row span,.resource-state span{overflow-wrap:anywhere;white-space:normal}.min-width-zero{min-width:0}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;border:0;clip-path:inset(50%);overflow:hidden;white-space:nowrap}ion-list[inset]{margin:0;border:1px solid var(--hairline);border-radius:var(--radius-md);background:var(--surface);overflow:hidden}ion-header.page-header ion-toolbar{--opacity: 1;--background: color-mix(in srgb, var(--ion-background-color) 82%, transparent);--min-height: 52px;--padding-start: 20px;--padding-end: 12px}ion-header.page-header ion-toolbar:first-of-type{padding-top:calc(var(--ion-safe-area-top, 0px) + 6px);padding-bottom:6px}ion-header:after{display:none}.ios .bottom-navigation,.ios .login-panel,.md .bottom-navigation{backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px)}.md ion-header ion-toolbar{backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px)}.page-heading{min-width:0}.page-title,.page-subtitle{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.page-title{margin:0;color:var(--ion-text-color);font-family:var(--font-display);font-size:var(--text-lg);line-height:26px;font-weight:700;letter-spacing:-.024em}.page-subtitle{margin-top:1px;color:var(--text-muted);font-size:var(--text-2xs);line-height:15px;font-weight:550;letter-spacing:.01em}.page-back,.page-action{display:grid;place-items:center;flex:0 0 auto;height:44px;padding:0;border:0;background:none}.page-back{width:44px;margin:0 4px 0 -10px}.page-actions{display:flex;align-items:center;gap:6px;flex:0 0 auto;margin-left:8px}.page-chip{display:inline-flex;align-items:center;gap:5px;height:34px;padding:0 12px 0 10px;border-radius:var(--radius-sm);color:var(--ion-color-primary);background:var(--tint-primary);font-family:var(--font-display);font-size:var(--text-xs);font-weight:600;letter-spacing:-.006em;white-space:nowrap;transition:background 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var(--ion-background-color)}.content-shell{width:min(100%,1080px);min-height:100%;margin:0 auto;padding:18px max(20px,env(safe-area-inset-right)) calc(104px + env(safe-area-inset-bottom)) max(20px,env(safe-area-inset-left));animation:shell-in var(--dur-slow) var(--ease-out) both}@keyframes shell-in{0%{opacity:0;transform:translateY(6px)}}.route-loading,.resource-state{display:grid;place-items:center;align-content:center;gap:8px;min-height:240px;padding:28px;color:var(--text-muted);text-align:center}.resource-state>strong{color:var(--ion-text-color);font-family:var(--font-display);font-size:var(--text-base);font-weight:650;letter-spacing:-.01em}.resource-state>span{max-width:30ch;font-size:var(--text-xs);line-height:1.6}.resource-state>ion-button{margin-top:6px}.route-loading{position:fixed;top:0;right:0;bottom:0;left:0;z-index:30;display:grid;place-items:center;color:var(--text-muted);font-size:var(--text-sm);background:var(--ion-background-color);background:color-mix(in srgb,var(--ion-background-color) 72%,transparent);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);animation:fade-in .24s ease}@keyframes fade-in{0%{opacity:0}}.resource-state>ion-icon{display:grid;place-items:center;width:56px;height:56px;margin-bottom:4px;border-radius:var(--radius-full);color:var(--ion-color-primary);background:var(--tint-primary);font-size:26px}.resource-error>ion-icon{color:var(--ion-color-danger);background:color-mix(in srgb,var(--ion-color-danger) 11%,transparent)}.resource-error>span,.action-feedback-error{color:var(--ion-color-danger)}.pagination-error{display:flex;align-items:center;justify-content:center;gap:8px;color:var(--ion-color-danger);font-size:var(--text-xs)}.contract-unavailable{min-height:180px;margin-top:16px;border:1px dashed var(--hairline-strong);border-radius:var(--radius-md);background:color-mix(in srgb,var(--surface-soft) 40%,var(--surface))}.inline-empty{min-height:88px;padding:30px 18px;border:1px dashed var(--hairline-strong);border-radius:var(--radius-md);color:var(--text-muted);background:color-mix(in srgb,var(--surface-soft) 32%,var(--surface));font-size:var(--text-xs);text-align:center}.action-feedback{display:flex;align-items:center;gap:10px;min-height:46px;margin:12px 0;padding:11px 15px;border:1px solid color-mix(in srgb,var(--ion-color-success) 26%,transparent);border-radius:var(--radius-sm);color:var(--ion-color-success-shade);background:color-mix(in srgb,var(--ion-color-success) 9%,var(--surface));font-size:var(--text-xs)}.offline-notice{display:flex;align-items:center;gap:10px;min-height:42px;margin:0 0 14px;padding:10px 15px;border:1px solid color-mix(in srgb,var(--ion-color-warning) 30%,transparent);border-radius:var(--radius-sm);color:var(--ion-color-warning);background:color-mix(in srgb,var(--ion-color-warning) 10%,var(--surface));font-size:var(--text-xs)}.offline-notice ion-icon{flex:0 0 auto;font-size:18px}.action-feedback ion-spinner,.action-feedback ion-icon{flex:0 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var(--ion-color-danger)}.metric-label{display:inline-block;max-width:100%;padding:3px 9px;border-radius:var(--radius-full);overflow:hidden;color:color-mix(in srgb,var(--tone) 84%,var(--ion-text-color));background:color-mix(in srgb,var(--tone) 13%,transparent);font-size:var(--text-2xs);font-weight:600;letter-spacing:.02em;text-overflow:ellipsis;white-space:nowrap}.metric small{display:block;overflow:hidden;color:var(--text-muted);font-size:var(--text-2xs);text-overflow:ellipsis;white-space:nowrap}.metric strong{display:block;margin:10px 0 4px;font-family:var(--font-display);font-size:var(--text-xl);line-height:28px;font-weight:700;letter-spacing:-.026em}.metric-warning strong{color:var(--ion-color-warning)}.metric-danger strong{color:var(--ion-color-danger)}.card-list{display:grid;gap:14px;margin-top:14px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;align-items:end}.form-grid>ion-textarea,.form-grid>ion-input[aria-label*=说明]{grid-column:1 / 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var(--hairline);border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow-sm)}.live-whiteboard-toolbar{display:flex;min-height:48px;align-items:center;flex-wrap:wrap;gap:8px;padding:4px 10px;border-bottom:1px solid color-mix(in srgb,var(--line) 85%,transparent);color:var(--text-muted);background:var(--surface)}.live-whiteboard-toolbar label{display:flex;min-width:0;align-items:center;gap:6px;font-size:var(--text-xs)}.live-whiteboard-toolbar .width-control{flex:1 1 120px;min-width:0}.live-whiteboard-toolbar input[type=color]{width:32px;height:32px;padding:2px;border:1px solid color-mix(in srgb,var(--line) 85%,transparent);border-radius:var(--radius-xs);background:#fff}.live-whiteboard-toolbar input[type=range]{width:min(120px,26vw)}.live-whiteboard canvas{display:block;width:100%;aspect-ratio:16 / 9;background:#fff}.live-whiteboard canvas.editable{cursor:crosshair;touch-action:none}.button-row-wrap{flex-wrap:wrap}.primary-actions{margin:16px 0 0}.primary-actions ion-button{flex:1 1 150px}.card-heading-row ion-card-title{min-width:0;font-size:var(--text-md)}.card-action-line{margin-top:12px;color:var(--text-muted);font-size:var(--text-xs)}.button-row{flex-wrap:wrap;justify-content:flex-end;margin-top:12px}.primary-course-card{border-color:color-mix(in srgb,var(--ion-color-primary) 28%,transparent);background:radial-gradient(90% 130% at 4% 0%,color-mix(in srgb,var(--ion-color-primary) 10%,transparent),transparent 60%),var(--surface)}.task-list ion-icon{padding:8px;border-radius:var(--radius-xs);color:var(--ion-color-primary);background:var(--tint-primary)}.alert-band,.suggestion-row{display:flex;align-items:center;gap:13px;min-height:74px;padding:15px 16px;border:1px solid color-mix(in srgb,var(--ion-color-warning) 30%,transparent);border-radius:var(--radius-md);background:color-mix(in srgb,var(--ion-color-warning) 9%,var(--surface))}.suggestion-row{border-color:color-mix(in srgb,var(--ion-color-primary) 26%,transparent);background:color-mix(in srgb,var(--ion-color-primary) 7%,var(--surface))}.suggestion-row>ion-icon{display:grid;place-items:center;flex:0 0 auto;width:40px;height:40px;padding:10px;border-radius:13px;color:var(--ion-color-primary);background:var(--tint-primary-strong)}.suggestion-row span{flex:1;min-width:0;font-size:var(--text-xs);line-height:1.65}.score-change-up{color:var(--ion-color-success);font-weight:600}.score-change-down{color:var(--ion-color-danger);font-weight:600}.alert-band.compact{margin:14px 0}.alert-band>ion-icon{display:grid;place-items:center;flex:0 0 auto;width:40px;height:40px;padding:10px;border-radius:13px;color:var(--ion-color-warning);background:color-mix(in srgb,var(--ion-color-warning) 15%,transparent)}.alert-band>div{flex:1;min-width:0}.alert-band strong,.alert-band span{display:block}.alert-band strong{font-family:var(--font-display);font-size:var(--text-sm);font-weight:650;letter-spacing:-.012em}.alert-band span{margin-top:4px;color:var(--text-muted);font-size:var(--text-xs);line-height:1.55}.date-input,.form-control,.profile-edit-row{margin:14px 0;border:1px solid var(--hairline);border-radius:var(--radius-sm);background:var(--surface)}.date-input,.form-control{--padding-start: 12px;--inner-padding-end: 12px}.profile-edit-row{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:10px;padding:10px 12px}.profile-edit-row ion-input{min-width:0}.profile-edit-row:focus-within{border-color:color-mix(in srgb,var(--ion-color-primary) 45%,transparent)}.date-strip{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:3px;margin:14px 0 20px;padding:3px;border-radius:var(--radius-sm);background:var(--fill)}.date-strip button{min-height:38px;border:0;border-radius:var(--radius-xs);color:var(--text-muted);background:transparent;font-size:var(--text-xs);font-weight:500;transition:background var(--dur) var(--ease-out),color var(--dur) var(--ease-out),box-shadow var(--dur) var(--ease-out),transform var(--dur-fast) var(--ease-spring)}.date-strip button:active{transform:scale(.96)}.date-strip button.selected{color:var(--ion-color-primary);background:var(--surface);box-shadow:var(--shadow-raised),inset 0 0 0 1px color-mix(in srgb,var(--ion-color-primary) 20%,transparent);font-weight:650}.timeline{position:relative;display:grid;gap:12px}.timeline:before{content:"";position:absolute;top:16px;bottom:16px;left:40px;width:1px;background:repeating-linear-gradient(180deg,var(--hairline-strong) 0 4px,transparent 4px 10px);pointer-events:none}.timeline-item{--status: var(--ion-color-primary);position:relative;display:grid;grid-template-columns:56px minmax(0,1fr) auto;align-items:center;gap:12px;min-height:96px;padding:15px 16px 15px 22px;border:1px solid var(--hairline);border-radius:var(--radius-md);background:var(--surface);box-shadow:var(--shadow-sm);cursor:pointer;transition:transform var(--dur) var(--ease-out),box-shadow var(--dur) var(--ease-out)}.timeline-item:before{content:"";position:absolute;top:15px;bottom:15px;left:9px;width:3px;border-radius:var(--radius-full);background:var(--status)}.timeline-item:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.timeline-item.status-offline{--status: var(--ion-color-secondary)}.timeline-item.status-warning{--status: var(--ion-color-warning)}.timeline-item time{align-self:start;font-family:var(--font-display);font-size:var(--text-base);font-weight:700;letter-spacing:-.02em}.timeline-item h3{margin:4px 0 3px;font-family:var(--font-display);font-size:var(--text-base);font-weight:650;letter-spacing:-.012em}.timeline-item p{margin:0;color:var(--text-muted);font-size:var(--text-xs)}.eyebrow{display:inline-block;margin-bottom:7px;padding:3px 9px;border-radius:var(--radius-full);color:var(--ion-color-primary);background:var(--tint-primary-strong);font-size:var(--text-2xs);font-weight:600;letter-spacing:.06em}.welcome-banner .eyebrow{color:#fffffff0;background:#ffffff2e;box-shadow:inset 0 0 0 1px #ffffff38}.session-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;border:1px solid var(--hairline);border-radius:var(--radius-md);background:var(--hairline);box-shadow:var(--shadow-sm);overflow:hidden}.session-summary div{padding:16px 13px;background:var(--surface)}.session-summary span,.session-summary strong{display:block}.session-summary span{color:var(--text-muted);font-size:var(--text-2xs)}.session-summary strong{margin-top:6px;font-family:var(--font-display);font-size:var(--text-base);font-weight:650;letter-spacing:-.014em}.action-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-bottom:20px}.avatar,.profile-avatar{display:grid;place-items:center;flex:0 0 auto;width:38px;height:38px;border-radius:50%;color:#fff;background:var(--gradient-brand-mark);box-shadow:inset 0 1px #ffffff42;font-family:var(--font-display);font-size:var(--text-sm);font-weight:650}.avatar-large{width:48px;height:48px;font-size:var(--text-md)}.live-stage{position:relative;display:grid;min-height:230px;border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-lg);background:radial-gradient(120% 100% at 50% 0%,rgba(120,200,195,.14),transparent 62%),linear-gradient(168deg,#1b242c,#10171d);box-shadow:var(--shadow-md);overflow:hidden}.live-stage:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:var(--grid-motif);opacity:.55;pointer-events:none}.live-stage.is-live{border-color:color-mix(in srgb,var(--ion-color-danger) 50%,transparent)}.live-stage.is-live:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:inherit;box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--ion-color-danger) 42%,transparent);pointer-events:none}@media(prefers-reduced-motion:no-preference){.live-stage.is-live:after{animation:live-pulse 2.6s var(--ease-out) infinite}}@keyframes live-pulse{0%,to{opacity:.3}50%{opacity:1}}.camera-preview{position:relative;display:grid;place-items:center;align-content:center;gap:14px;padding:26px 20px;color:#eaf2f4;font-size:var(--text-sm);text-align:center}.camera-preview ion-icon{width:62px;height:62px;padding:16px;border:1px solid rgba(255,255,255,.16);border-radius:20px;background:#ffffff12}.camera-preview span{max-width:22em;font-weight:600;letter-spacing:-.01em}.live-stage ion-badge.ion-color{position:absolute;top:12px;left:12px;color:#f2f7f8;background:#0a101594;box-shadow:inset 0 0 0 1px #fff3;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.live-stats{margin:14px 0}.live-control-list{margin-top:14px!important}.progress-line{margin:14px 0}.progress-line>div:first-child{display:flex;justify-content:space-between;gap:10px;color:var(--text-muted);font-size:var(--text-xs)}.progress-line>div:first-child strong{color:var(--ion-text-color);font-weight:650}.progress-track{height:7px;margin-top:9px;border-radius:var(--radius-full);background:var(--fill);box-shadow:inset 0 1px 1px #0e20270f;overflow:hidden}.progress-track span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--ion-color-primary-shade),var(--ion-color-primary-tint));transition:width var(--dur-slow) var(--ease-out)}.welcome-banner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:164px;margin-bottom:16px;padding:24px 26px;border-radius:var(--radius-lg);color:#fff;background:var(--gradient-banner);box-shadow:0 16px 36px -14px #04504a99;overflow:hidden}.welcome-banner:before{content:"";position:absolute;top:-1px;right:-1px;bottom:-1px;left:-1px;background:var(--grid-motif);-webkit-mask-image:linear-gradient(202deg,rgba(0,0,0,.95),transparent 70%);mask-image:linear-gradient(202deg,rgba(0,0,0,.95),transparent 70%);pointer-events:none}.welcome-banner>div{position:relative;min-width:0}.welcome-banner h1{margin:8px 0 6px;font-family:var(--font-display);font-size:var(--text-xl);line-height:1.16;font-weight:700;letter-spacing:-.026em;text-wrap:balance}.welcome-banner p{margin:0;color:#ffffffd1;font-size:var(--text-xs)}.welcome-banner>ion-icon{position:relative;display:grid;flex:0 0 auto;place-items:center;width:68px;height:68px;padding:19px;border:1px solid rgba(255,255,255,.26);border-radius:22px;color:#fff;background:#ffffff26;box-shadow:inset 0 1px #ffffff52;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.parent-banner{background:var(--gradient-parent-banner);box-shadow:0 16px 36px -14px #17233c9e}.attachment-form{margin-top:14px}.result-panel{margin-top:16px}.teacher-comment{position:relative;margin-top:14px;padding:14px 16px 14px 18px;border-radius:var(--radius-sm);background:color-mix(in srgb,var(--ion-color-secondary) 8%,var(--surface))}.teacher-comment:before{content:"";position:absolute;top:14px;bottom:14px;left:7px;width:3px;border-radius:var(--radius-full);background:var(--ion-color-secondary)}.teacher-comment p{margin:6px 0 0;color:var(--text-muted);font-size:var(--text-xs);line-height:1.65}.result-hero{position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:138px;margin-bottom:16px;padding:22px 24px;border:1px solid color-mix(in srgb,var(--ion-color-success) 24%,transparent);border-radius:var(--radius-lg);background:radial-gradient(85% 130% at 6% 0%,color-mix(in srgb,var(--ion-color-success) 13%,transparent),transparent 62%),var(--surface);box-shadow:var(--shadow-sm);overflow:hidden}.result-hero>span{color:var(--text-muted);font-size:var(--text-xs)}.result-hero strong{font-family:var(--font-display);font-size:44px;line-height:1;font-weight:700;letter-spacing:-.03em}.question-navigation{display:flex;gap:8px;margin:14px 0;padding-bottom:3px;overflow-x:auto;scrollbar-width:none}.question-navigation::-webkit-scrollbar{display:none}.question-navigation button{flex:0 0 44px;min-height:44px;border:1px solid var(--hairline);border-radius:50%;color:var(--text-muted);background:var(--surface);font-size:var(--text-xs);font-weight:650;font-variant-numeric:tabular-nums;transition:transform var(--dur-fast) var(--ease-spring),background var(--dur) var(--ease-out),color var(--dur) var(--ease-out),box-shadow var(--dur) var(--ease-out)}.question-navigation button:active{transform:scale(.92)}.question-navigation button.answered{border-color:var(--ion-color-primary);color:var(--ion-color-primary)}.question-navigation button.current{border-color:transparent;color:var(--ion-color-primary-contrast);background:var(--ion-color-primary)}.message-summary{display:grid;grid-template-columns:auto auto minmax(0,1fr);align-items:baseline;gap:9px;margin:0 0 14px;padding:17px 19px;border:1px solid var(--hairline);border-radius:var(--radius-md);background:radial-gradient(70% 130% at 4% 0%,var(--tint-primary),transparent 58%),var(--surface);box-shadow:var(--shadow-sm)}.message-summary strong{color:var(--ion-color-primary);font-family:var(--font-display);font-size:28px;font-weight:700;letter-spacing:-.026em}.message-summary span{color:var(--text-muted);font-size:var(--text-xs)}.message-summary span:last-child{text-align:right}.message-safety-label{display:inline-block;margin-right:6px;padding:2px 7px;border-radius:7px;color:var(--ion-color-danger);background:color-mix(in srgb,var(--ion-color-danger) 13%,var(--surface));font-size:var(--text-2xs);font-weight:700}.course-cover{--cover: var(--subject-default);display:grid;place-items:center;width:50px;height:50px;margin-bottom:12px;border-radius:15px;color:var(--cover);background:color-mix(in srgb,var(--cover) 14%,var(--surface));box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--cover) 24%,transparent)}.course-cover.cover-coral,.course-cover.subject-chinese{--cover: var(--subject-chinese)}.course-cover.subject-math{--cover: var(--subject-math)}.course-cover.subject-english{--cover: var(--subject-english)}.course-cover.subject-physics{--cover: var(--subject-physics)}.course-cover.subject-chemistry{--cover: var(--subject-chemistry)}.course-cover.subject-biology{--cover: var(--subject-biology)}.course-cover ion-icon{font-size:24px}.exam-clock,.child-switcher,.report-score{display:flex;align-items:center;gap:15px;min-height:84px;padding:15px 17px;border:1px solid var(--hairline);border-radius:var(--radius-md);background:var(--surface)}.exam-clock{border-color:color-mix(in srgb,var(--ion-color-danger) 24%,transparent);background:color-mix(in srgb,var(--ion-color-danger) 6%,var(--surface))}.exam-clock>ion-icon{display:grid;place-items:center;flex:0 0 auto;width:44px;height:44px;padding:11px;border-radius:14px;color:var(--ion-color-danger);background:color-mix(in srgb,var(--ion-color-danger) 14%,transparent)}.exam-clock div{flex:1;min-width:0}.exam-clock span,.exam-clock strong{display:block}.exam-clock span{color:var(--text-muted);font-size:var(--text-xs)}.exam-clock strong{margin-top:4px;font-family:var(--font-display);font-size:26px;font-weight:700;letter-spacing:-.024em}.question-type{color:var(--ion-color-primary);font-weight:700}.answer-list ion-item{margin:8px 0;border:1px solid var(--hairline);border-radius:var(--radius-sm)}.exam-actions{display:grid;grid-template-columns:1fr 1fr;gap:12px}.question-list,.grading-list{display:grid;gap:14px;margin:16px 0}.question-item,.grading-item{min-width:0;padding:17px 19px;border:1px solid var(--hairline);border-radius:var(--radius-md);background:var(--surface);box-shadow:var(--shadow-sm)}.question-item h2,.grading-item h3{min-width:0;margin:0;overflow-wrap:anywhere;font-family:var(--font-display);font-size:var(--text-md);font-weight:650;line-height:1.55;letter-spacing:-.012em}.answer-options{display:grid;gap:8px;margin-top:14px}.answer-options button,.filter-segment button{min-width:0;min-height:46px;padding:12px 15px;border:1px solid var(--hairline);border-radius:var(--radius-sm);color:var(--ion-text-color);background:var(--surface);font-size:var(--text-sm);overflow-wrap:anywhere;text-align:left;transition:border-color var(--dur) var(--ease-out),background var(--dur) var(--ease-out),color var(--dur) var(--ease-out),box-shadow var(--dur) var(--ease-out),transform var(--dur-fast) var(--ease-spring)}.answer-options button:active,.filter-segment button:active{transform:scale(.98)}.answer-options button.selected,.filter-segment button.selected{border-color:color-mix(in srgb,var(--ion-color-primary) 52%,transparent);color:var(--ion-color-primary);background:var(--tint-primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--ion-color-primary) 12%,transparent);font-weight:650}.grading-fields{display:grid;grid-template-columns:minmax(100px,.3fr) minmax(0,1fr);gap:10px;margin-top:12px}.grading-fields ion-input{min-width:0;border:1px solid var(--hairline);border-radius:var(--radius-sm);--padding-start: 10px;--padding-end: 10px}.child-switcher>div:nth-child(2){flex:1;min-width:0}.child-switcher span,.child-switcher strong{display:block}.child-switcher span{color:var(--text-muted);font-size:var(--text-xs)}.child-switcher .avatar-large{font-size:var(--text-md)}.child-switcher ion-select{flex:0 0 auto;max-width:45%;min-height:36px;padding:0 12px;border:1px solid color-mix(in srgb,var(--ion-color-primary) 30%,transparent);border-radius:var(--radius-full);color:var(--ion-color-primary);font-size:var(--text-xs);font-weight:650;background:var(--tint-primary)}.child-switcher ion-select::part(placeholder),.child-switcher ion-select::part(text){color:var(--ion-color-primary)}.score-ring{--ring-value: 100;position:relative;display:grid;place-items:center;flex:0 0 auto;width:106px;height:106px;border-radius:50%}.score-ring:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:50%;background:conic-gradient(from -90deg,var(--ion-color-success) calc(var(--ring-value) * 1%),var(--fill) 0);-webkit-mask:radial-gradient(farthest-side,transparent calc(50% - 9px),#000 calc(50% - 8.5px));mask:radial-gradient(farthest-side,transparent calc(50% - 9px),#000 calc(50% - 8.5px))}.score-ring strong,.score-ring span{position:relative;display:block;text-align:center}.score-ring strong{font-family:var(--font-display);font-size:28px;font-weight:700;letter-spacing:-.026em}.score-ring span{margin-top:2px;color:var(--text-muted);font-size:var(--text-2xs)}.message-list ion-item{min-height:84px}.message-list ion-label{min-width:0;cursor:pointer}.message-unread::part(native){background:color-mix(in 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4px;overflow:hidden;font-family:var(--font-display);font-size:var(--text-xl);line-height:30px;font-weight:700;letter-spacing:-.026em;text-overflow:ellipsis;white-space:nowrap}.identity-text p{margin:0;color:var(--text-muted);font-size:var(--text-xs)}.profile-avatar{width:56px;height:56px;font-size:var(--text-md)}.group-action{margin-top:12px}.brand-mark{display:grid;place-items:center;flex:0 0 auto;width:44px;height:44px;border-radius:14px;color:#fff;background:var(--gradient-brand-mark);box-shadow:var(--shadow-primary),inset 0 1px #ffffff47;font-family:var(--font-display);font-size:var(--text-md);font-weight:600}.shortcut-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(72px,1fr));padding:6px 2px;border:1px solid var(--hairline);border-radius:var(--radius-md);background:var(--surface)}.shortcut-grid button{display:grid;place-items:center;gap:7px;min-height:78px;padding:12px 4px;border:0;border-radius:var(--radius-sm);color:var(--ion-text-color);background:none;transition:background var(--dur-fast) var(--ease-out)}.shortcut-grid button:active{background:var(--fill)}.shortcut-grid button:focus-visible{outline:2px solid var(--ion-color-primary);outline-offset:-2px}.shortcut-icon{position:relative;display:grid;place-items:center;width:38px;height:38px;border-radius:var(--radius-full);color:var(--ion-color-primary);background:var(--tint-primary);font-size:20px}.shortcut-label{font-size:var(--text-xs);font-weight:550;letter-spacing:-.006em}.shortcut-badge{position:absolute;top:-5px;right:-7px}.bottom-unread-count,.shortcut-badge{display:inline-grid;place-items:center;min-width:19px;height:19px;padding:0 5px;border-radius:var(--radius-full);color:var(--ion-color-danger-contrast);background:var(--ion-color-danger);box-shadow:0 0 0 2px var(--surface);font-size:var(--text-2xs);font-weight:700;font-variant-numeric:tabular-nums}.bottom-unread-count{position:absolute;top:3px;right:calc(50% - 20px)}.app-main{position:relative;width:100%;min-width:0;min-height:100%}.bottom-navigation{position:fixed;z-index:20;right:0;bottom:0;left:0;display:grid;grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);height:calc(62px + env(safe-area-inset-bottom));padding:7px 8px env(safe-area-inset-bottom);border-top:1px solid var(--hairline);background:var(--surface);background:color-mix(in srgb,var(--surface) 84%,transparent);box-shadow:0 -8px 24px -18px #0e202766;backdrop-filter:saturate(180%) blur(18px);-webkit-backdrop-filter:saturate(180%) blur(18px)}.bottom-navigation button{position:relative;display:grid;place-items:center;align-content:center;gap:4px;border:0;border-radius:var(--radius-sm);color:var(--text-muted);background:transparent;transition:color var(--dur) var(--ease-out)}.bottom-navigation button:before{content:"";position:absolute;z-index:-1;top:1px;right:5px;bottom:1px;left:5px;border-radius:var(--radius-sm);background:var(--tint-primary);opacity:0;transform:scale(.9);transition:opacity var(--dur) var(--ease-out),transform var(--dur) var(--ease-spring)}.bottom-navigation button:after{content:"";position:absolute;top:0;width:16px;height:2.5px;border-radius:var(--radius-full);background:var(--ion-color-primary);transform:scaleX(0);transition:transform var(--dur) var(--ease-spring)}.bottom-navigation button.active{color:var(--ion-color-primary)}.bottom-navigation button.active:before{opacity:1;transform:scale(1)}.bottom-navigation button.active:after{transform:scaleX(1)}.bottom-navigation ion-icon{font-size:23px;transition:transform var(--dur) var(--ease-spring)}.bottom-navigation button.active ion-icon{transform:translateY(-1px) scale(1.06)}.bottom-navigation span{font-size:var(--text-2xs);font-weight:500}.bottom-navigation button.active span{font-weight:650}.login-content{--background: radial-gradient(72% 46% at 10% 2%, color-mix(in srgb, var(--ion-color-primary) 17%, transparent), transparent 66%), radial-gradient(60% 42% at 98% 98%, color-mix(in srgb, var(--ion-color-tertiary) 14%, transparent), transparent 62%), linear-gradient(180deg, #f9fbfb 0%, #e9f1ef 100%)}.login-layout{display:grid;align-content:center;gap:30px;width:min(100% - 32px,460px);min-height:100%;margin:auto;padding:calc(30px + env(safe-area-inset-top)) 0 calc(30px + env(safe-area-inset-bottom));animation:rise-in .48s var(--ease-out)}.login-brand{display:flex;align-items:center;gap:16px}.brand-mark-large{width:66px;height:66px;font-size:var(--text-xl);border-radius:20px}.login-brand h1{margin:0;color:var(--ion-text-color);font-family:var(--font-display);font-size:clamp(28px,8vw,34px);font-weight:700;letter-spacing:-.028em}.login-brand p{margin:6px 0 0;color:var(--text-muted);font-size:var(--text-xs)}.login-panel{padding:22px 22px 18px;border:1px 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h2{margin-bottom:12px;font-size:28px}.login-story>p{margin:0;font-size:13px}.login-story-features{display:none}.bottom-navigation{background:var(--surface);backdrop-filter:none;-webkit-backdrop-filter:none;box-shadow:none}}@media(prefers-reduced-motion:reduce){.resource-skeleton span{animation:none}}@media(max-width:767px){.page-content{--background: var(--ion-background-color)}ion-header.page-header ion-toolbar{--background: var(--ion-background-color);--padding-start: max(24px, env(safe-area-inset-left));--padding-end: max(24px, env(safe-area-inset-right));border-bottom:0;-webkit-backdrop-filter:none;backdrop-filter:none}ion-header.page-header ion-toolbar:first-of-type{padding-top:var(--ion-safe-area-top, 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h3{font-size:16px;margin:8px 0 5px}.home-agenda-card ion-button{margin-top:4px}.child-switcher{min-height:56px;padding:0 0 12px;margin-bottom:20px;border:0;border-radius:0;background:transparent}.child-switcher .avatar{width:40px;height:40px;font-size:16px;box-shadow:none}.child-switcher strong{font-size:17px}.child-switcher ion-select{flex:1;max-width:none;min-height:44px;padding:8px 12px;border:0;border-radius:10px;font-size:14px;font-weight:500;background:var(--fill)}ion-card{border:0;border-radius:0;box-shadow:none;background:transparent;transition:none}ion-card[button]:active{transform:none;background:var(--fill)}ion-card-header{padding:14px 0 6px}.app-workspace ion-card-content{padding:2px 0 16px;padding-inline:0;font-size:13px;line-height:1.8}ion-card-title,.card-heading-row ion-card-title{font-size:16px;line-height:1.6;font-weight:600;letter-spacing:0}ion-card-subtitle{order:initial;margin-top:5px;font-size:12px;line-height:1.7;text-transform:none;letter-spacing:0}.card-list{display:block;margin-top:0}.card-list>ion-card{border-bottom:1px solid var(--hairline)}.card-list>ion-card:last-child{border-bottom:0}.card-list>ion-card ion-card-header{padding-top:20px}.card-list .course-cover{position:absolute;top:20px;left:0;display:grid;width:24px;height:26px;margin:0;border-radius:0;background:none;box-shadow:none}.card-list .course-cover ion-icon{font-size:23px}.card-list ion-card-header:has(.course-cover){padding-left:36px}.card-heading-row{align-items:flex-start;gap:10px}.card-heading-row ion-badge{flex:0 0 auto;margin-top:4px}.card-action-line{gap:8px;margin-top:5px;font-size:12px}.row-link{display:inline-flex;align-items:center;gap:4px;flex:0 0 auto;color:var(--ion-color-primary);font-size:12px}.row-link 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var(--shadow-sm);--padding-start: 8px;--padding-end: 8px;min-width:0;min-height:44px;margin:0;font-size:14px;font-weight:500}ion-segment-button::part(indicator){top:0;bottom:0;height:100%;padding:0}ion-segment-button::part(indicator-background){border-radius:9px;box-shadow:var(--shadow-sm)}ion-segment-button:before{border:0}.filter-segment{gap:8px;margin-bottom:12px;padding-bottom:0;border:0}.filter-segment button{position:relative;min-height:44px;padding:0 14px;border:0;border-radius:10px;color:var(--text-muted);background:var(--fill);font-size:13px}.filter-segment button.selected{border:0;background:var(--tint-primary);color:var(--ion-color-primary);box-shadow:inset 0 0 0 1px var(--ion-color-primary)}ion-button,ion-button[size=large]{min-height:44px;--border-radius: 10px;font-size:14px;font-weight:500;transition:none}ion-button:active{transform:none}.button-row{gap:4px 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select.ui-select:not([multiple]):not([size]){display:flex;align-items:center;gap:12px;padding-inline:12px;-webkit-appearance:base-select;-moz-appearance:base-select;appearance:base-select;background-image:none;overflow:hidden}select.ui-select>button.ui-select-value{all:unset;display:block;flex:1;min-width:0}select.ui-select selectedcontent{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}select.ui-select::picker-icon{content:"";flex:0 0 16px;width:16px;height:16px;background:var(--select-arrow) center / 16px no-repeat}select.ui-select:open::picker-icon{transform:rotate(180deg)}select.ui-select::picker(select){-webkit-appearance:base-select;-moz-appearance:base-select;appearance:base-select;inline-size:anchor-size(self-inline);min-inline-size:anchor-size(self-inline);max-inline-size:calc(100vw - 32px);max-block-size:min(320px,50dvh);margin-block:6px;padding:4px;border:1px solid var(--hairline-strong);border-radius:12px;background:var(--surface);color:var(--ion-text-color);box-shadow:var(--shadow-lg);font:inherit;font-size:14px;overflow-y:auto;scrollbar-width:thin;overscroll-behavior:contain;scroll-padding-block:4px}select.ui-select option{display:flex;align-items:center;gap:12px;min-height:36px;padding:8px 10px;border:0;border-radius:7px;background:transparent;color:var(--ion-text-color);font-weight:400;line-height:1.5;white-space:normal;overflow-wrap:anywhere;cursor:pointer}select.ui-select option:not(:disabled):is(:hover,:focus-visible){outline:none;background:var(--fill)}select.ui-select option:checked{background:var(--tint-primary);color:var(--ion-color-primary);font-weight:500}select.ui-select option:disabled{color:var(--text-subtle);cursor:not-allowed}select.ui-select option::checkmark{order:1;margin-inline-start:auto;color:var(--ion-color-primary)}}}@media(max-width:767px),(pointer:coarse){:is(.ui-page,.ui-dialog,.qb-dialog) :is(select.ui-select,button.ui-select-trigger){font-size:16px}}@media(prefers-color-scheme:dark){:is(select.ui-select,button.ui-select-trigger),:is(.ui-page,.ui-dialog,.qb-dialog) :is(select.ui-select,button.ui-select-trigger){--select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath d='m4 6 4 4 4-4' fill='none' stroke='%23a7b4aa' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")}}@media(forced-colors:active){:is(.ui-page,.ui-dialog,.qb-dialog) select.ui-select{-webkit-appearance:auto;-moz-appearance:auto;appearance:auto;background-image:none}}