:root{color-scheme:light;--ocean-bg: #F8FCFF;--ocean-surface: #FFFFFF;--ocean-border: #D7E8F5;--ocean-text: #102A43;--ocean-muted: #52667A;--whale-primary: #5BBCEB;--whale-soft: #AEE7FF;--bubble-active: #DDF5FF;--bubble-inactive: #E2E8F0;--sponge-active: #FFD95A;--sponge-shadow: rgba(249, 185, 62, .28);--sponge-inactive: #A8B7C7;--streak-active: #1F6FD6;--streak-inactive: #64758A;--feedback-correct: #166534;--feedback-mistake: #9A3412;--feedback-warning: #B7791F;--premium-purple: #6D28D9}body{margin:0;background:#f9fafb;color:#1e1b4b;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}#root{min-height:100vh}.app-loading-screen{display:flex;align-items:center;justify-content:center;min-height:100vh;background:#f9fafb;flex-direction:column;gap:16px}.app-loading-spinner{width:48px;height:48px;border:4px solid #e2e8f0;border-top-color:#2563eb;border-radius:50%;animation:sp .8s linear 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768px){.landing-hero{padding-top:6rem}}:root{--penglish-mobile-nav-height: 64px;--penglish-mobile-safe-bottom: calc(var(--penglish-mobile-nav-height) + 32px + env(safe-area-inset-bottom));--p-card-bg: rgba(255, 255, 255, .82);--p-card-bg-mobile: rgba(255, 255, 255, .88);--p-card-border: rgba(120, 190, 230, .35);--p-card-blur: blur(14px);--ocean-bg: #F8FCFF;--ocean-surface: #FFFFFF;--ocean-glass-card-bg: var(--p-card-bg);--ocean-glass-panel-bg: rgba(255, 255, 255, .82);--ocean-glass-soft-bg: rgba(255, 255, 255, .8);--ocean-glass-clear-bg: rgba(255, 255, 255, .78);--ocean-readable-bg: rgba(255, 255, 255, .9);--ocean-glass-border: var(--p-card-border);--ocean-glass-blue-border: rgba(120, 190, 230, .35);--ocean-glass-blur: 14px;--ocean-border: #D7E8F5;--ocean-text: #102A43;--ocean-muted: #52667A;--whale-primary: #5BBCEB;--whale-soft: #AEE7FF;--bubble-active: #DDF5FF;--bubble-inactive: #E2E8F0;--sponge-active: #FFD95A;--sponge-shadow: rgba(249, 185, 62, .28);--sponge-inactive: 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var(--ocean-readable-bg)}.penglish-ocean-page-shell--glass-clear{--ocean-shell-card-bg: var(--ocean-glass-clear-bg);--ocean-shell-panel-bg: rgba(255, 255, 255, .72);--ocean-shell-readable-bg: rgba(255, 255, 255, .84)}.penglish-ocean-page-shell .ocean-glass-card,.penglish-ocean-page-shell .home-dashboard-card,.penglish-ocean-page-shell .shadowing-practice-card,.penglish-ocean-page-shell .shadowing-feedback-panel,.penglish-ocean-page-shell .shadowing-custom-card,.penglish-ocean-page-shell .shadowing-transcript-panel{background:var(--ocean-shell-card-bg)!important;border-color:var(--ocean-glass-blue-border)!important;backdrop-filter:var(--p-card-blur);-webkit-backdrop-filter:var(--p-card-blur)}.penglish-ocean-page-shell .ocean-readable-surface{background:var(--ocean-shell-readable-bg)!important}@media (max-width: 640px){.ocean-glass-card,.ocean-glass-panel,.ocean-glass-soft,.ocean-glass-clear{background:var(--p-card-bg-mobile);backdrop-filter:var(--p-card-blur);-webkit-backdrop-filter:var(--p-card-blur)}.penglish-ocean-page-shell{scroll-padding-bottom:var(--penglish-mobile-safe-bottom);padding-bottom:max(var(--penglish-mobile-safe-bottom),calc(var(--penglish-mobile-nav-height) + 32px + env(safe-area-inset-bottom)))}.penglish-ocean-page-shell .ocean-glass-card,.penglish-ocean-page-shell .home-dashboard-card,.penglish-ocean-page-shell .shadowing-practice-card,.penglish-ocean-page-shell .shadowing-feedback-panel,.penglish-ocean-page-shell .shadowing-custom-card,.penglish-ocean-page-shell .shadowing-transcript-panel{background:var(--p-card-bg-mobile)!important;backdrop-filter:var(--p-card-blur);-webkit-backdrop-filter:var(--p-card-blur)}}@media (prefers-reduced-motion: reduce){.poo-ocean-companion__swimmer,.poo-ocean-companion__swimmer 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