.home-mobile-copy,.home-mobile-extras,.search-provider-icon,.search-field-label,.search-submit-arrow,.mobile-player-accuracy{display:none}.mobile-icon-button{cursor:pointer;width:44px;height:44px;color:var(--ink-muted);border-radius:10px;flex:none;justify-content:center;align-items:center;display:inline-flex}.mobile-icon-button:hover{background:var(--surface-2);color:var(--ink)}.mobile-icon-button svg{width:21px;height:21px}.mobile-sheet{width:min(100%,560px);max-width:none;max-height:88dvh;padding:8px 20px calc(24px + env(safe-area-inset-bottom));border:1px solid var(--line);background:var(--surface);color:var(--ink);overscroll-behavior:contain;border-radius:22px 22px 0 0;margin:0 auto;position:fixed;inset:auto 0 0;overflow-y:auto}.mobile-sheet::backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0009}.mobile-navigation-drawer{width:min(340px,88vw);height:100dvh;max-height:100dvh;padding-top:max(20px, env(safe-area-inset-top));border:0;border-right:1px solid var(--line);border-radius:0 20px 20px 0;margin:0;inset:0 auto 0 0}.mobile-navigation-drawer .mobile-sheet-handle{display:none}.mobile-navigation-links [aria-current=page]{color:var(--accent);font-weight:600}.mobile-sheet-handle{background:var(--line-strong);border-radius:6px;width:34px;height:4px;margin:0 auto 12px}.mobile-sheet-heading{justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;display:flex}.mobile-sheet-heading h2{letter-spacing:-.6px;font-size:20px;font-weight:600}.mobile-more-links{flex-direction:column;display:flex}.mobile-more-links>a,.mobile-more-links>button{border-top:1px solid var(--line);text-align:left;cursor:pointer;justify-content:space-between;align-items:center;gap:12px;min-height:52px;padding:10px 0;font-size:13px;display:flex}.mobile-more-links>a:hover,.mobile-more-links>button:hover{color:var(--accent)}.mobile-preferences{grid-template-columns:1fr 1fr;gap:10px;margin-top:14px;display:grid}.mobile-preferences .app-label{display:inline}.mobile-preferences .btn{min-height:48px;font-size:13px}.mobile-sheet .btn,.mobile-sheet select{min-height:44px}.mobile-board-options{border-bottom:1px solid var(--line);padding-block:14px}.mobile-board-options [aria-label=Board\ theme]{background:0 0;border:0;gap:2px;padding:0}.mobile-board-options [aria-label=Board\ theme] button{background-clip:content-box;border-color:#0000;border-radius:8px;width:44px;height:44px;padding:10px}.mobile-coach-side{color:var(--ink-muted);flex-direction:column;gap:7px;padding-block:14px;font-size:12px;display:flex}.mobile-coach-side select{font-size:16px}.mobile-deeper-options{flex-direction:column;gap:10px;margin-block:8px 14px;display:flex}.mobile-deeper-options>.btn{width:100%}.mobile-game-details{flex-direction:column;gap:8px;display:flex}.mobile-game-details .game-context-header{gap:8px;padding:12px;font-size:12px}.mobile-game-details .game-context-header>h1{width:100%}.mobile-game-details .player-strip-details{display:flex}@media (max-width:1023.98px){html{scroll-padding-top:calc(76px + env(safe-area-inset-top));scroll-padding-bottom:calc(12px + env(safe-area-inset-bottom))}.app-body{padding-bottom:env(safe-area-inset-bottom)}.app-topbar{min-height:62px;padding:max(9px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) 9px max(12px, env(safe-area-inset-left));background:var(--bg);-webkit-backdrop-filter:none;backdrop-filter:none;position:sticky;top:0}.app-topbar .btn{min-width:44px;min-height:44px;padding:8px}.mobile-brand{min-height:44px}.mobile-brand img{object-fit:contain;width:154px;height:40px}.mobile-page-title{align-items:center;gap:2px;min-width:0;font-size:16px;font-weight:600;display:flex}.mobile-page-title>a{margin-left:-9px}.app-main{padding:20px}.app-main:has(.home-page){padding:24px 20px 12px}.app-footer-inner{padding:20px}.app-footer-links a{align-items:center;min-height:44px;display:inline-flex}.app-body:has(.review-walkthrough) .app-footer{margin-bottom:0}.home-page{gap:24px;max-width:480px;margin-inline:auto;padding:0}.home-page .home-desktop-copy{display:none}.home-page .home-mobile-copy{display:inline}.home-hero{display:block}.home-hero:before,.home-hero-stage,.home-steps,.home-practice-section{display:none}.home-eyebrow{letter-spacing:.12em;font-size:10px}.home-live-dot{width:5px;height:5px}.home-hero h1{letter-spacing:-1.7px;margin:13px 0 0;font-size:37px;font-weight:600;line-height:1.1}.home-hero h1 .home-headline-accent:after{display:none}.home-hero-description{margin:10px 0 0;font-size:13px;line-height:1.6}.home-search{border:1px solid var(--line);border-radius:17px;margin-top:22px;padding:17px;box-shadow:0 14px 32px #0000000b}.home-search-heading{margin:0 0 14px}.home-search-heading h2{letter-spacing:-.4px;font-size:16px;font-weight:600}.home-search-heading>span{display:none}.home-search-form .search-fields{flex-direction:column;gap:15px;display:flex}.search-providers>button{touch-action:manipulation;min-height:44px}.home-search-form .search-providers{background:var(--bg);border:0;border-radius:10px;gap:4px;width:100%;padding:4px}.home-search-form .search-providers>button{border-radius:7px;flex:1;justify-content:center;align-items:center;gap:7px;padding-inline:8px;font-size:13px;font-weight:500;display:flex}.home-search-form .search-providers>button[aria-pressed=true]{background:var(--surface-3);color:var(--ink);box-shadow:0 1px 5px #0002}.home-search-form .search-provider-icon{flex-shrink:0;width:19px;height:19px;display:inline-flex}.home-search-form .search-provider-icon>span{width:100%;height:100%}.home-search-form .search-entry{flex-direction:column;gap:0}.home-search-form .search-field-label{color:var(--ink-muted);margin-bottom:7px;font-size:11px;display:block}.home-search-form .search-entry input{background:var(--bg);border-radius:10px;flex:none;width:100%;min-height:50px;font-size:16px}.home-search-form .search-submit{border-radius:10px;gap:12px;width:100%;min-height:50px;margin-top:12px;font-size:14px}.home-search-form .search-submit-arrow{width:18px;height:18px;display:block}.home-search-form .search-hint{display:none}.home-search-form .search-hints{margin-top:0}.home-search-form .search-hints>div{margin-top:12px}.home-search-form .search-hints .chip{min-height:44px}.home-search-form .home-search-links{border:0;margin-top:4px;padding-top:0;display:block}.home-search-form .home-search-links>a{display:none}.home-search-form .home-import-toggle{width:100%;min-height:44px;color:var(--ink-muted);background:0 0;border:0;border-radius:8px;justify-content:center;font-size:12px;font-weight:400}.home-promises{justify-content:center;gap:10px;margin-top:12px;font-size:10px}.home-promises b{padding-right:2px}.home-mobile-extras{display:block}.home-mobile-extras>h2{letter-spacing:-.5px;margin-bottom:12px;font-size:17px;font-weight:600}.home-mobile-practice{grid-template-columns:1fr 1fr;gap:10px;display:grid}.home-mobile-practice>a{border:1px solid var(--line);background:var(--surface);border-radius:14px;min-height:111px;padding:13px;position:relative}.home-mobile-practice-icon{background:color-mix(in srgb, var(--success) 12%, var(--surface));width:31px;height:31px;color:var(--success);border-radius:9px;place-items:center;margin-bottom:12px;display:grid}.home-mobile-practice-icon svg{width:18px;height:18px}.home-mobile-practice>a:nth-child(2) .home-mobile-practice-icon{background:var(--accent-soft);color:var(--accent)}.home-mobile-practice-arrow{color:var(--ink-faint);position:absolute;top:17px;right:13px}.home-mobile-practice h3{letter-spacing:-.25px;font-size:14px;font-weight:600}.home-mobile-practice p{color:var(--ink-muted);margin-top:3px;font-size:11px}.home-mobile-classic{border-top:1px solid var(--line);align-items:center;gap:12px;min-height:80px;margin-top:20px;padding:15px 0;display:flex}.home-mobile-classic-art{border:1px solid var(--line);background:var(--surface-2);border-radius:10px;flex:none;place-items:center;width:49px;height:49px;display:grid}.home-mobile-classic small{color:var(--accent);letter-spacing:.11em;text-transform:uppercase;font-size:9px;display:block}.home-mobile-classic strong{margin-top:3px;font-size:12px;font-weight:500;display:block}.home-mobile-classic>span:last-child{color:var(--ink-muted);margin-left:auto;font-size:24px}.mobile-sheet .home-pgn{background:0 0;border:0;margin:0;padding:0;animation:none}.mobile-sheet .home-pgn-head,.mobile-sheet .home-pgn:before{display:none}.mobile-sheet .home-pgn-input{height:180px;margin-top:0;font-size:16px}.mobile-sheet .home-pgn-actions{gap:8px}.mobile-sheet .home-pgn-actions .btn{flex:1;font-size:12px}.mobile-sheet .home-pgn-actions .btn-primary{flex-basis:100%;min-height:50px}.mobile-sheet .home-pgn-hint{margin-top:12px;font-size:11px}.app-main:has(.analysis-shell){padding:0 12px 24px}.analysis-shell{gap:0;max-width:600px;margin-inline:auto}.analysis-shell:before{display:none}.analysis-shell>.game-context-header{background:0 0;border:0;border-radius:0;flex-wrap:nowrap;gap:8px;height:28px;min-height:28px;padding:0}.analysis-shell>.game-context-header>h1{white-space:nowrap;text-overflow:ellipsis;max-width:58%;font-size:10px;font-weight:500;overflow:hidden}.analysis-shell>.game-context-header>.chip,.analysis-shell>.game-context-header>div{display:none}.analysis-shell>.game-context-header>p{text-align:right;font-size:10px}.analysis-workspace-grid,.analysis-board-column{gap:0}.analysis-board-stack{gap:4px}.analysis-board-row{flex-direction:column;gap:3px}.mobile-evaluation{flex:none;align-items:center;gap:10px;width:100%;min-height:18px;display:flex}.mobile-evaluation-track{background:var(--line-strong);border-radius:999px;flex:1;height:6px;display:block;overflow:hidden}.mobile-evaluation-fill{border-radius:inherit;background:var(--accent);height:100%;transition:width .2s;display:block}.mobile-evaluation-score{text-align:right;font-variant-numeric:tabular-nums;min-width:5ch;color:var(--ink);flex:none;font-size:11px;font-weight:600;line-height:18px}.analysis-board-stack .player-strip{height:30px;min-height:30px;box-shadow:none;background:0 0;border:0;border-radius:0;grid-template-columns:25px minmax(0,1fr) auto;gap:6px;padding:0}.analysis-board-stack .player-strip-avatar{border-radius:6px;width:25px;height:25px}.analysis-board-stack .player-strip-avatar .size-8{width:23px;height:23px}.analysis-board-stack .player-strip-identity{flex-wrap:nowrap;gap:5px;font-size:12px;line-height:18px}.analysis-board-stack .player-strip-identity>.truncate{min-width:0}.analysis-board-stack .player-strip-side{font-size:9px}.analysis-board-stack .player-strip-rating{font-size:10px}.analysis-board-stack .player-strip-details,.analysis-board-stack .player-accuracy-dial{display:none}.analysis-board-stack .player-strip-stats{gap:6px}.analysis-board-stack .mobile-player-accuracy{color:var(--success);font-size:11px;font-weight:600;display:inline}.mobile-player-accuracy small{font-size:9px}.analysis-board-stack .player-strip-clock{border-radius:5px;min-width:46px;height:auto;padding:2px 5px;font-size:12px;line-height:20px}.board-position-info{min-height:22px;padding:0}.board-position-info p{font-size:10px}.board-position-info>div{justify-content:space-between;width:100%}.analysis-shell .board-transport{border:0;border-bottom:1px solid var(--line);box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none;background:0 0;border-radius:0;align-items:center;gap:6px;padding:0 0 5px;display:flex;position:static}.analysis-shell .board-transport .grid{flex:1;gap:4px}.analysis-shell .board-transport button{background:0 0;min-height:44px}.analysis-shell .board-transport button:nth-child(3){background:var(--surface-2)}.mobile-position-reading{width:42px;color:var(--ink-muted);font-variant-numeric:tabular-nums;flex-direction:column;flex:none;align-items:center;gap:3px;font-size:9px;display:flex}.mobile-position-reading strong{color:var(--ink);font-size:10px;font-weight:500}.mobile-analysis-panel.analysis-panel{box-shadow:none;background:0 0;border:0;border-radius:0;overflow:visible}.mobile-analysis-panel .review-panel-body{gap:10px;padding:12px 0 0}.mobile-review-navigation{border-bottom:1px solid var(--line);align-items:center;display:flex}.mobile-review-tabs{flex:1;grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.mobile-review-tabs button{min-height:44px;color:var(--ink-muted);cursor:pointer;justify-content:center;align-items:center;gap:6px;font-size:12px;display:flex;position:relative}.mobile-review-tabs button>svg{width:15px;height:15px}.mobile-review-tabs button[aria-selected=true]{color:var(--accent);font-weight:600}.mobile-review-tabs button[aria-selected=true]:after{content:"";background:var(--accent);border-radius:2px;height:2px;position:absolute;inset:auto 12px -1px}.mobile-analysis-panel .review-walkthrough{gap:10px}.mobile-review-coach .review-walkthrough-coach{flex:none;max-height:none;padding:0;overflow:visible}.mobile-review-coach .coach-panel{padding:0}.mobile-review-coach .compact-coach .coach-card{border:1px solid var(--line);background:var(--surface);box-shadow:none;border-radius:13px;padding:12px 12px 12px 68px;position:relative}.mobile-review-coach .compact-coach .coach-card-head{border:0;gap:6px;min-height:20px;margin-bottom:5px;padding:0}.mobile-review-coach .compact-coach .coach-card-avatar{width:46px;height:54px;min-height:44px;box-shadow:none;background:0 0;border:0;position:absolute;top:12px;left:12px}.mobile-review-coach .compact-coach .coach-card-name{color:var(--ink-muted);text-transform:uppercase;letter-spacing:.04em;font-size:10px;font-weight:500}.mobile-review-coach .compact-coach .coach-card-role{font-size:9px}.mobile-review-coach .compact-coach .coach-card-eval{background:0 0;padding:0;font-size:11px}.mobile-review-coach .compact-coach .coach-card-voice{background:0 0;min-width:44px;min-height:44px;margin-top:-8px;margin-bottom:-8px}.mobile-review-coach .compact-coach .coach-card-body{padding:0}.mobile-review-coach .compact-coach .coach-card-verdict{align-items:flex-start;gap:5px;font-size:13px;line-height:1.4}.mobile-review-coach .compact-coach .coach-card-san{font-size:13px}.mobile-review-coach .compact-coach .coach-card-text{font-size:12px;line-height:1.6}.mobile-review-coach .compact-coach .coach-card-opening{font-size:10px}.mobile-review-coach .compact-coach .coach-card-best{font-size:11px}.mobile-review-coach .coach-actions{gap:6px;margin-top:8px;padding:0}.mobile-review-coach .coach-action{min-height:44px;font-size:11px}.mobile-analysis-panel .review-summary-content{overflow:visible}.mobile-analysis-panel .review-summary{height:auto}.mobile-analysis-panel [aria-label="Match breakdown progress"] button,.mobile-analysis-panel .review-moment,.mobile-analysis-panel .grade-tile{min-height:44px}.annotated-mobile-moves{margin:0;padding:0}.annotated-mobile-moves>.scroll-thin{flex:none;min-height:132px;max-height:264px}.mobile-move-columns{color:var(--ink-faint);letter-spacing:.12em;text-transform:uppercase;grid-template-columns:1fr 1fr;padding:0 0 9px 30px;font-size:9px;display:grid}.mobile-move-columns span{padding-left:10px}.annotated-mobile-moves .review-move-row{background:0 0;grid-template-columns:26px repeat(2,minmax(0,1fr));gap:4px;min-height:48px}.annotated-mobile-moves .review-move-number{font-size:11px;font-weight:400}.annotated-mobile-moves .review-move-cell{border-radius:7px;gap:6px;height:44px;padding:0 8px;font-size:13px;font-weight:500}.annotated-mobile-moves .review-move-row:nth-child(odd) .review-move-cell{background:var(--surface)}.annotated-mobile-moves .review-move-cell[aria-current=true]{background:var(--accent-soft);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--accent) 65%,transparent)}.annotated-mobile-moves .review-move-cell[aria-current=true] .move-san{box-shadow:none;background:0 0}.mobile-selected-annotation{border:1px solid var(--line);background:var(--surface);border-radius:9px;align-items:center;gap:8px;min-height:44px;margin-top:8px;padding:8px 10px;font-size:12px;display:flex}.mobile-selected-annotation strong{margin-left:auto;font-size:11px;font-weight:500}.mobile-annotation-guide{margin-top:4px}.mobile-annotation-guide summary{min-height:44px;color:var(--ink-muted);cursor:pointer;justify-content:space-between;align-items:center;font-size:11px;list-style:none;display:flex}.mobile-annotation-guide summary:after{content:"+";font-size:18px}.mobile-annotation-guide[open] summary:after{content:"−"}.mobile-annotation-guide>div{border:1px solid var(--line);background:var(--surface);border-radius:10px;grid-template-columns:1fr 1fr;gap:12px;padding:12px;display:grid}.mobile-annotation-guide>div>span{color:var(--ink-muted);align-items:center;gap:8px;font-size:11px;display:flex}.mobile-annotation-guide p{color:var(--ink-muted);padding:10px 0;font-size:11px;line-height:1.6}.mobile-game-details .player-strip-identity{flex-wrap:wrap}.mobile-game-details .player-strip-details{grid-column:1/-1}.mobile-game-details .mobile-player-accuracy{display:none}.puzzle-actions .btn,.puzzle-settings .btn{min-height:44px}.puzzle-trainer .coach-card-voice{min-width:44px;min-height:44px}.app-main:has(.puzzle-trainer){padding-inline:12px}.puzzle-heading{padding-inline:8px}.puzzle-heading h1{font-size:30px}.puzzle-heading>div>p{font-size:13px}.board-controls>.btn{min-height:44px}.board-controls [aria-label=Board\ theme]{background:0 0;border:0;gap:4px;padding:0}.board-controls [aria-label=Board\ theme]>button{border-radius:8px;width:44px;height:44px;transform:none}.puzzle-board-tools .board-controls{gap:10px}.puzzle-board-tools .board-controls>.btn{border-radius:6px;min-height:28px;padding:3px 8px;font-size:11px}.puzzle-board-tools .board-controls [aria-label=Board\ theme]{gap:8px}.puzzle-board-tools .board-controls [aria-label=Board\ theme]>button{border-radius:5px;width:24px;height:24px}}@media (max-width:359px){.app-main:has(.home-page){padding:16px 16px 12px}.home-hero h1{font-size:33px}.home-search{padding:14px}.home-promises{gap:8px;font-size:9px}.app-topbar{padding-inline:12px}.mobile-brand img{width:144px}.analysis-board-stack .player-strip-side{display:none}.mobile-review-tabs button{gap:4px;font-size:11px}.mobile-review-tabs button svg{width:13px;height:13px}.mobile-selected-annotation{gap:6px;font-size:11px}}@media (max-width:1023.98px) and (orientation:landscape) and (max-height:600px){.analysis-board-row,.analysis-board-stack>.player-strip{width:min(100%,100dvh - 82px);margin-inline:auto}}@media (prefers-reduced-motion:reduce){.mobile-evaluation-fill{transition:none}}