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(width<=980px){.timer-layout{grid-template-columns:minmax(0,1fr)}.timer-card{min-height:380px}.timer-side{grid-template-columns:1fr;display:grid}.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=820px){.desktop-nav{display:none}.app-header-inner{gap:12px;padding:8px 16px}.app-main{padding:20px 16px 100px}.mobile-nav{z-index:30;background:var(--surface);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);grid-template-columns:repeat(5,minmax(0,1fr));display:grid;position:fixed;bottom:0;left:0;right:0}.mobile-nav-link{min-height:60px;color:var(--muted);flex-direction:column;justify-content:center;align-items:center;gap:2px;font-size:.66rem;font-weight:600;text-decoration:none;display:flex}.mobile-nav-link.is-active{color:var(--accent-strong)}.mobile-nav-link.is-active:before{content:"";background:var(--accent);border-radius:0 0 3px 3px;width:28px;height:3px;position:absolute;top:0}.mobile-nav-link{position:relative}.header-logout-text{display:none}.header-logout{width:44px;padding:0}.user-chip-name{display:none}.user-chip{padding:4px}.profile-action{margin-left:0}.user-grid{grid-template-columns:minmax(0,1fr)}}@media (width<=600px){.app-header-inner{min-height:58px}.brand-mark{width:32px;height:32px}.brand-name{font-size:1.04rem}.page{gap:16px}h1{font-size:1.6rem}.timer-card{gap:14px;min-height:0;padding:20px}.timer-display{margin-top:4px;font-size:clamp(2.9rem,16vw,4rem)}.timer-actions{flex-direction:column}.timer-actions .btn{width:100%}.timer-card .btn{min-height:50px}.quick-stat-grid dd{font-size:1.08rem}.stat-grid{gap:10px}.stat-card{min-height:100px;padding:13px 14px}.stat-value{font-size:1.32rem}.chart-card,.calendar-card,.card{padding:16px}.chart-plot{height:210px}.timeline-head{align-items:flex-start}.timeline-date-controls{width:100%}.timeline-date-input{flex:auto}.timeline-date-input input{width:100%}.timeline-summary{gap:10px 16px;padding:10px 12px}.timeline-summary-item{min-width:92px}.timeline-summary-latest{margin-left:0}.timeline-chart{min-width:620px}.timeline-session-item{padding:10px 12px}.calendar-grid,.calendar-weekdays{gap:4px}.calendar-cell{border-radius:5px;padding:3px 4px;font-size:.62rem}.session-card,.public-session-card{grid-template-columns:60px minmax(0,1fr);gap:12px;padding:14px}.session-date-day{font-size:.9rem}.session-actions{border-top:1px solid var(--line);grid-column:1/-1;justify-content:flex-end;padding-top:8px}.session-actions .btn{min-height:44px}.leaderboard-row{grid-template-columns:38px 32px minmax(0,1fr) auto;gap:9px;padding:10px 12px}.leaderboard-rank{width:32px;height:32px;font-size:.82rem}.leaderboard-stats strong{font-size:.9rem}.segmented{width:100%}.segment{text-align:center;flex:1 1 0;padding:6px 8px}.custom-range{flex-direction:column;align-items:stretch}.custom-range .btn{width:100%}.auth-main{justify-content:flex-start;padding:8px 16px 40px}.auth-card{border-radius:var(--radius-lg);padding:22px 18px}.auth-topbar{padding:14px 16px}.dialog-backdrop{align-items:flex-end;padding:0}.dialog-panel{border-radius:var(--radius-xl) var(--radius-xl) 0 0;max-width:none;max-height:92vh;animation-name:dialog-up}.dialog-footer .btn{flex:1 1 0}.state-panel{padding:14px}.error-panel>.btn,.empty-action{width:100%;margin-left:0}.error-panel>.btn,.empty-action .btn{width:100%}.profile-header{gap:12px}.avatar-large{width:56px;height:56px;font-size:1.1rem}.page-header{align-items:flex-start}}@keyframes dialog-up{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}