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.55s ease forwards}.welcome-overlay--closing .welcome-card{animation:welcomeCardOut .55s ease forwards}.welcome-fireworks{position:fixed;top:0;right:0;bottom:0;left:0;width:100vw;height:100vh;pointer-events:none;z-index:0}.welcome-card{position:relative;z-index:2;width:min(100%,460px);text-align:center;padding:28px 24px;animation:welcomePop .55s ease;background:#fffffff5;box-shadow:0 24px 80px #0f172a47}.welcome-eyebrow{margin:0 0 10px;color:var(--primary);font-weight:700;text-transform:uppercase;letter-spacing:.08em;font-size:.78rem}.welcome-card h2{margin:0 0 10px;font-size:clamp(1.45rem,5vw,2rem);line-height:1.25;color:#831843}.welcome-title-glow{animation:welcomeGlow 2.4s ease-in-out infinite}.welcome-subtitle{margin:0 0 18px;color:var(--muted)}@keyframes welcomePop{0%{opacity:0;transform:translateY(18px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes welcomeGlow{0%,to{text-shadow:0 0 12px rgba(236,72,153,.35);transform:scale(1)}50%{text-shadow:0 0 22px rgba(236,72,153,.75),0 0 36px rgba(244,114,182,.45);transform:scale(1.02)}}@keyframes welcomeOverlayIn{0%{opacity:0}to{opacity:1}}@keyframes welcomeOverlayOut{to{opacity:0}}@keyframes welcomeCardOut{to{opacity:0;transform:translateY(-12px) scale(.96)}}@media (max-width: 1024px){.landing-grid,.level-list,.grammar-grid,.common-topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width: 640px){.app{padding-top:12px}.auth-page{min-height:calc(100dvh - 56px);align-content:start;padding-top:8px}.auth-card{width:100%}.password-input-wrap input{padding-right:3.75rem;font-size:16px}.password-toggle{font-size:.74rem;padding:4px 6px;min-height:44px}.field input,.field select,.field textarea{font-size:16px}.welcome-card{padding:22px 18px}.landing-auth-actions{flex-direction:column;width:100%}.landing-auth-actions .btn,.landing-auth-actions .landing-welcome-banner,.landing-user-email{width:100%}.google-login-wrap iframe,.google-login-wrap>div{width:100%!important;max-width:100%}.hero,.page-header,.practice-status,.section-header,.topic-detail-header{flex-direction:column;align-items:stretch}.hero-actions,.status-stats{width:100%}.card{padding:16px}.landing-page{padding:32px 16px 48px}.landing-grid{grid-template-columns:1fr;gap:12px}.landing-card{padding:16px}.landing-card-icon{width:48px;height:48px;font-size:1.5rem}.period-grid,.level-list,.level-progress,.choice-grid,.match-grid,.complete-stats,.grammar-grid,.common-topic-grid,.calendar-picker{grid-template-columns:1fr}.level-progress{grid-template-columns:repeat(5,minmax(0,1fr))}.search-bar,.form-grid{grid-template-columns:1fr}.practice-nav-bar{flex-direction:column;position:sticky;bottom:56px}.typing-form{flex-direction:column}.typing-form input,.typing-form textarea,.typing-form button{width:100%}.upload-row{flex-direction:column;align-items:stretch}.upload-row input[type=file]{width:100%}.homework-preview,.homework-saved-video{max-width:100%}.pagination{flex-direction:column;gap:10px}.flashcard-face{min-height:220px;padding:20px}.match-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.btn,.btn.btn-primary,.btn.btn-outline{min-height:44px}.lang-fab-btn{min-height:28px;min-width:32px}}@media (max-width: 380px){.level-progress{grid-template-columns:repeat(3,minmax(0,1fr))}.hero h1,.page-header h1,.landing-header h1{font-size:1.55rem}.welcome-card h2{font-size:1.35rem}.landing-welcome-banner{border-radius:18px;font-size:.98rem}.lang-fab{right:max(8px,env(safe-area-inset-right,8px));bottom:max(8px,env(safe-area-inset-bottom,8px))}}