*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--app-viewport-width: 100vw;--app-viewport-height: 100vh;--app-viewport-stable-height: 100vh;--app-safe-top: env(safe-area-inset-top, 0px);--app-safe-right: env(safe-area-inset-right, 0px);--app-safe-bottom: env(safe-area-inset-bottom, 0px);--app-safe-left: env(safe-area-inset-left, 0px);--app-content-max-width: 720px;--app-page-max-width: var(--app-content-max-width);--app-page-gutter: 16px;--app-section-gap: 20px;--app-card-gap: 12px;--app-card-radius: 16px;--app-inline-cluster-gap: 8px;--app-action-row-gap: 10px;--app-list-item-padding-x: 14px;--app-list-item-padding-y: 12px;--app-course-card-image-height: 140px;--app-course-card-hero-font-size: 40px;--app-course-header-image-height: 160px;--app-hero-cover-shell-size: 188px;--app-hero-cover-size: 160px;--app-hero-placeholder-size: 56px;--app-hero-title-size: 24px;--app-hero-description-size: 14px;--app-meeting-card-header-min-height: 80px;--app-page-padding-top: 16px;--app-page-padding-bottom: calc(32px + var(--app-safe-bottom));--app-bottom-nav-height: calc(49px + var(--app-safe-bottom));--app-page-tabbed-padding-bottom: calc(var(--app-bottom-nav-height) + 16px);--app-overlay-padding-top: var(--app-safe-top);--app-overlay-padding-bottom: calc(16px + var(--app-safe-bottom));--app-sheet-padding-bottom: max(16px, var(--app-safe-bottom));--app-sticky-bottom-offset: calc(var(--app-bottom-nav-height) + 8px);--app-media-max-height: min(calc(var(--app-viewport-stable-height) * .6), 560px);--app-skeleton-surface: var(--tg-theme-secondary-bg-color, #f3f4f6);--app-skeleton-border: rgba(127, 127, 127, .08);--app-skeleton-highlight: rgba(255, 255, 255, .18);--app-avatar-fallback-bg: var(--tg-theme-secondary-bg-color, #f3f4f6);--app-avatar-fallback-text: var(--tg-theme-hint-color, #6b7280)}@media(max-width:389px){:root{--app-content-max-width: 100%;--app-page-gutter: 12px;--app-section-gap: 16px;--app-card-gap: 10px;--app-card-radius: 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180px;--app-hero-placeholder-size: 64px;--app-hero-title-size: 28px;--app-hero-description-size: 15px;--app-meeting-card-header-min-height: 92px;--app-media-max-height: min(calc(var(--app-viewport-stable-height) * .62), 640px)}}@media(prefers-color-scheme:dark){:root{--app-skeleton-border: rgba(255, 255, 255, .06);--app-skeleton-highlight: rgba(255, 255, 255, .12);--app-avatar-fallback-text: rgba(255, 255, 255, .64)}}html,body,#root{min-height:var(--app-viewport-stable-height)}body{font-family:-apple-system,system-ui,Segoe UI,sans-serif;background:var(--tg-theme-bg-color, #ffffff);color:var(--tg-theme-text-color, #111111);font-size:15px;line-height:1.5;min-height:var(--app-viewport-height);-webkit-font-smoothing:antialiased;padding-top:var(--app-safe-top);padding-left:var(--app-safe-left);padding-right:var(--app-safe-right)}a{color:var(--tg-theme-link-color, 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#fff)}.btn-going{background:#16a34a26;color:#16a34a}.toast{position:fixed;bottom:var(--app-sticky-bottom-offset);left:50%;width:min(calc(100% - (var(--app-page-gutter) * 2)),520px);transform:translate(-50%) translateY(0);background:#1e1e1eeb;color:#fff;padding:10px 20px;border-radius:20px;font-size:14px;font-weight:500;line-height:1.45;white-space:nowrap;pointer-events:none;z-index:9999;opacity:1;transition:opacity .3s,transform .3s;text-align:center}.toast--multiline{white-space:normal}.toast.hidden{opacity:0;transform:translate(-50%) translateY(12px)}.bottom-sheet-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;z-index:1000;display:flex;align-items:flex-end;justify-content:center;padding:0 var(--app-page-gutter)}.bottom-sheet{width:100%;max-width:560px;background:var(--tg-theme-bg-color, #fff);border-radius:20px 20px 0 0;padding:12px 16px var(--app-sheet-padding-bottom);display:flex;flex-direction:column;gap:10px}.bottom-sheet-handle{width:40px;height:4px;border-radius:2px;background:#00000026;margin:0 auto 8px}.bottom-sheet-title{font-size:16px;font-weight:600;text-align:center;margin-bottom:4px}.bottom-sheet-btn{display:flex;align-items:center;gap:14px;width:100%;padding:14px 16px;background:var(--tg-theme-secondary-bg-color, #f5f5f5);border:none;border-radius:12px;font-size:15px;font-weight:500;cursor:pointer;-webkit-tap-highlight-color:transparent;text-align:left;color:var(--tg-theme-text-color, #1f2937)}.bottom-sheet-btn:disabled{opacity:.5}.bs-icon{display:flex;align-items:center;flex-shrink:0;color:var(--tg-theme-hint-color, #6b7280)}.bs-toast{padding:10px 14px;background:var(--tg-theme-bg-color, #fff);border:1px solid var(--tg-theme-hint-color, #e5e7eb);border-radius:10px;font-size:13px;color:var(--tg-theme-hint-color, 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